1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2014 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* See the GDB User Guide for details of the GDB remote protocol. */
30 #include "exceptions.h"
32 /*#include "terminal.h" */
35 #include "gdb-stabs.h"
36 #include "gdbthread.h"
38 #include "remote-notif.h"
41 #include "gdb_assert.h"
44 #include "cli/cli-decode.h"
45 #include "cli/cli-setshow.h"
46 #include "target-descriptions.h"
48 #include "filestuff.h"
53 #include "event-loop.h"
54 #include "event-top.h"
60 #include "gdbcore.h" /* for exec_bfd */
62 #include "remote-fileio.h"
63 #include "gdb/fileio.h"
65 #include "xml-support.h"
67 #include "memory-map.h"
69 #include "tracepoint.h"
75 /* Temp hacks for tracepoint encoding migration. */
76 static char *target_buf
;
77 static long target_buf_size
;
79 /* The size to align memory write packets, when practical. The protocol
80 does not guarantee any alignment, and gdb will generate short
81 writes and unaligned writes, but even as a best-effort attempt this
82 can improve bulk transfers. For instance, if a write is misaligned
83 relative to the target's data bus, the stub may need to make an extra
84 round trip fetching data from the target. This doesn't make a
85 huge difference, but it's easy to do, so we try to be helpful.
87 The alignment chosen is arbitrary; usually data bus width is
88 important here, not the possibly larger cache line size. */
89 enum { REMOTE_ALIGN_WRITES
= 16 };
91 /* Prototypes for local functions. */
92 static void async_cleanup_sigint_signal_handler (void *dummy
);
93 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
94 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
95 int forever
, int *is_notif
);
97 static void async_handle_remote_sigint (int);
98 static void async_handle_remote_sigint_twice (int);
100 static void remote_files_info (struct target_ops
*ignore
);
102 static void remote_prepare_to_store (struct target_ops
*self
,
103 struct regcache
*regcache
);
105 static void remote_open_1 (const char *, int, struct target_ops
*,
108 static void remote_close (struct target_ops
*self
);
110 static void remote_mourn (struct target_ops
*ops
);
112 static void extended_remote_restart (void);
114 static void extended_remote_mourn (struct target_ops
*);
116 static void remote_mourn_1 (struct target_ops
*);
118 static void remote_send (char **buf
, long *sizeof_buf_p
);
120 static int readchar (int timeout
);
122 static void remote_serial_write (const char *str
, int len
);
124 static void remote_kill (struct target_ops
*ops
);
126 static int remote_can_async_p (struct target_ops
*);
128 static int remote_is_async_p (struct target_ops
*);
130 static void remote_async (struct target_ops
*ops
,
131 void (*callback
) (enum inferior_event_type event_type
,
135 static void sync_remote_interrupt_twice (int signo
);
137 static void interrupt_query (void);
139 static void set_general_thread (struct ptid ptid
);
140 static void set_continue_thread (struct ptid ptid
);
142 static void get_offsets (void);
144 static void skip_frame (void);
146 static long read_frame (char **buf_p
, long *sizeof_buf
);
148 static int hexnumlen (ULONGEST num
);
150 static void init_remote_ops (void);
152 static void init_extended_remote_ops (void);
154 static void remote_stop (struct target_ops
*self
, ptid_t
);
156 static int stubhex (int ch
);
158 static int hexnumstr (char *, ULONGEST
);
160 static int hexnumnstr (char *, ULONGEST
, int);
162 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
164 static void print_packet (const char *);
166 static void compare_sections_command (char *, int);
168 static void packet_command (char *, int);
170 static int stub_unpack_int (char *buff
, int fieldlength
);
172 static ptid_t
remote_current_thread (ptid_t oldptid
);
174 static void remote_find_new_threads (void);
176 static int putpkt_binary (const char *buf
, int cnt
);
178 static void check_binary_download (CORE_ADDR addr
);
180 struct packet_config
;
182 static void show_packet_config_cmd (struct packet_config
*config
);
184 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
186 struct cmd_list_element
*c
,
189 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
190 static ptid_t
read_ptid (char *buf
, char **obuf
);
192 static void remote_set_permissions (struct target_ops
*self
);
195 static int remote_get_trace_status (struct target_ops
*self
,
196 struct trace_status
*ts
);
198 static int remote_upload_tracepoints (struct target_ops
*self
,
199 struct uploaded_tp
**utpp
);
201 static int remote_upload_trace_state_variables (struct target_ops
*self
,
202 struct uploaded_tsv
**utsvp
);
204 static void remote_query_supported (void);
206 static void remote_check_symbols (void);
208 void _initialize_remote (void);
211 static void stop_reply_xfree (struct stop_reply
*);
212 static void remote_parse_stop_reply (char *, struct stop_reply
*);
213 static void push_stop_reply (struct stop_reply
*);
214 static void discard_pending_stop_replies_in_queue (struct remote_state
*);
215 static int peek_stop_reply (ptid_t ptid
);
217 static void remote_async_inferior_event_handler (gdb_client_data
);
219 static void remote_terminal_ours (struct target_ops
*self
);
221 static int remote_read_description_p (struct target_ops
*target
);
223 static void remote_console_output (char *msg
);
225 static int remote_supports_cond_breakpoints (struct target_ops
*self
);
227 static int remote_can_run_breakpoint_commands (struct target_ops
*self
);
231 static struct cmd_list_element
*remote_cmdlist
;
233 /* For "set remote" and "show remote". */
235 static struct cmd_list_element
*remote_set_cmdlist
;
236 static struct cmd_list_element
*remote_show_cmdlist
;
238 /* Stub vCont actions support.
240 Each field is a boolean flag indicating whether the stub reports
241 support for the corresponding action. */
243 struct vCont_action_support
252 /* Controls whether GDB is willing to use range stepping. */
254 static int use_range_stepping
= 1;
256 #define OPAQUETHREADBYTES 8
258 /* a 64 bit opaque identifier */
259 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
261 /* About this many threadisds fit in a packet. */
263 #define MAXTHREADLISTRESULTS 32
265 /* Description of the remote protocol state for the currently
266 connected target. This is per-target state, and independent of the
267 selected architecture. */
271 /* A buffer to use for incoming packets, and its current size. The
272 buffer is grown dynamically for larger incoming packets.
273 Outgoing packets may also be constructed in this buffer.
274 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
275 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
280 /* True if we're going through initial connection setup (finding out
281 about the remote side's threads, relocating symbols, etc.). */
284 /* If we negotiated packet size explicitly (and thus can bypass
285 heuristics for the largest packet size that will not overflow
286 a buffer in the stub), this will be set to that packet size.
287 Otherwise zero, meaning to use the guessed size. */
288 long explicit_packet_size
;
290 /* remote_wait is normally called when the target is running and
291 waits for a stop reply packet. But sometimes we need to call it
292 when the target is already stopped. We can send a "?" packet
293 and have remote_wait read the response. Or, if we already have
294 the response, we can stash it in BUF and tell remote_wait to
295 skip calling getpkt. This flag is set when BUF contains a
296 stop reply packet and the target is not waiting. */
297 int cached_wait_status
;
299 /* True, if in no ack mode. That is, neither GDB nor the stub will
300 expect acks from each other. The connection is assumed to be
304 /* True if we're connected in extended remote mode. */
307 /* True if we resumed the target and we're waiting for the target to
308 stop. In the mean time, we can't start another command/query.
309 The remote server wouldn't be ready to process it, so we'd
310 timeout waiting for a reply that would never come and eventually
311 we'd close the connection. This can happen in asynchronous mode
312 because we allow GDB commands while the target is running. */
313 int waiting_for_stop_reply
;
315 /* The status of the stub support for the various vCont actions. */
316 struct vCont_action_support supports_vCont
;
318 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
319 responded to that. */
322 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
323 remote_open knows that we don't have a file open when the program
325 struct serial
*remote_desc
;
327 /* These are the threads which we last sent to the remote system. The
328 TID member will be -1 for all or -2 for not sent yet. */
329 ptid_t general_thread
;
330 ptid_t continue_thread
;
332 /* This is the traceframe which we last selected on the remote system.
333 It will be -1 if no traceframe is selected. */
334 int remote_traceframe_number
;
336 char *last_pass_packet
;
338 /* The last QProgramSignals packet sent to the target. We bypass
339 sending a new program signals list down to the target if the new
340 packet is exactly the same as the last we sent. IOW, we only let
341 the target know about program signals list changes. */
342 char *last_program_signals_packet
;
344 enum gdb_signal last_sent_signal
;
348 char *finished_object
;
349 char *finished_annex
;
350 ULONGEST finished_offset
;
352 /* Should we try the 'ThreadInfo' query packet?
354 This variable (NOT available to the user: auto-detect only!)
355 determines whether GDB will use the new, simpler "ThreadInfo"
356 query or the older, more complex syntax for thread queries.
357 This is an auto-detect variable (set to true at each connect,
358 and set to false when the target fails to recognize it). */
359 int use_threadinfo_query
;
360 int use_threadextra_query
;
362 void (*async_client_callback
) (enum inferior_event_type event_type
,
364 void *async_client_context
;
366 /* This is set to the data address of the access causing the target
367 to stop for a watchpoint. */
368 CORE_ADDR remote_watch_data_address
;
370 /* This is non-zero if target stopped for a watchpoint. */
371 int remote_stopped_by_watchpoint_p
;
373 threadref echo_nextthread
;
374 threadref nextthread
;
375 threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
377 /* The state of remote notification. */
378 struct remote_notif_state
*notif_state
;
381 /* Private data that we'll store in (struct thread_info)->private. */
382 struct private_thread_info
389 free_private_thread_info (struct private_thread_info
*info
)
395 /* This data could be associated with a target, but we do not always
396 have access to the current target when we need it, so for now it is
397 static. This will be fine for as long as only one target is in use
399 static struct remote_state
*remote_state
;
401 static struct remote_state
*
402 get_remote_state_raw (void)
407 /* Allocate a new struct remote_state with xmalloc, initialize it, and
410 static struct remote_state
*
411 new_remote_state (void)
413 struct remote_state
*result
= XCNEW (struct remote_state
);
415 /* The default buffer size is unimportant; it will be expanded
416 whenever a larger buffer is needed. */
417 result
->buf_size
= 400;
418 result
->buf
= xmalloc (result
->buf_size
);
419 result
->remote_traceframe_number
= -1;
420 result
->last_sent_signal
= GDB_SIGNAL_0
;
425 /* Description of the remote protocol for a given architecture. */
429 long offset
; /* Offset into G packet. */
430 long regnum
; /* GDB's internal register number. */
431 LONGEST pnum
; /* Remote protocol register number. */
432 int in_g_packet
; /* Always part of G packet. */
433 /* long size in bytes; == register_size (target_gdbarch (), regnum);
435 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
439 struct remote_arch_state
441 /* Description of the remote protocol registers. */
442 long sizeof_g_packet
;
444 /* Description of the remote protocol registers indexed by REGNUM
445 (making an array gdbarch_num_regs in size). */
446 struct packet_reg
*regs
;
448 /* This is the size (in chars) of the first response to the ``g''
449 packet. It is used as a heuristic when determining the maximum
450 size of memory-read and memory-write packets. A target will
451 typically only reserve a buffer large enough to hold the ``g''
452 packet. The size does not include packet overhead (headers and
454 long actual_register_packet_size
;
456 /* This is the maximum size (in chars) of a non read/write packet.
457 It is also used as a cap on the size of read/write packets. */
458 long remote_packet_size
;
461 /* Utility: generate error from an incoming stub packet. */
463 trace_error (char *buf
)
466 return; /* not an error msg */
469 case '1': /* malformed packet error */
470 if (*++buf
== '0') /* general case: */
471 error (_("remote.c: error in outgoing packet."));
473 error (_("remote.c: error in outgoing packet at field #%ld."),
474 strtol (buf
, NULL
, 16));
476 error (_("Target returns error code '%s'."), buf
);
480 /* Utility: wait for reply from stub, while accepting "O" packets. */
482 remote_get_noisy_reply (char **buf_p
,
485 do /* Loop on reply from remote stub. */
489 QUIT
; /* Allow user to bail out with ^C. */
490 getpkt (buf_p
, sizeof_buf
, 0);
494 else if (strncmp (buf
, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
497 CORE_ADDR from
, to
, org_to
;
499 int adjusted_size
= 0;
500 volatile struct gdb_exception ex
;
502 p
= buf
+ strlen ("qRelocInsn:");
503 pp
= unpack_varlen_hex (p
, &ul
);
505 error (_("invalid qRelocInsn packet: %s"), buf
);
509 unpack_varlen_hex (p
, &ul
);
514 TRY_CATCH (ex
, RETURN_MASK_ALL
)
516 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
520 adjusted_size
= to
- org_to
;
522 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
525 else if (ex
.reason
< 0 && ex
.error
== MEMORY_ERROR
)
527 /* Propagate memory errors silently back to the target.
528 The stub may have limited the range of addresses we
529 can write to, for example. */
534 /* Something unexpectedly bad happened. Be verbose so
535 we can tell what, and propagate the error back to the
536 stub, so it doesn't get stuck waiting for a
538 exception_fprintf (gdb_stderr
, ex
,
539 _("warning: relocating instruction: "));
543 else if (buf
[0] == 'O' && buf
[1] != 'K')
544 remote_console_output (buf
+ 1); /* 'O' message from stub */
546 return buf
; /* Here's the actual reply. */
551 /* Handle for retreving the remote protocol data from gdbarch. */
552 static struct gdbarch_data
*remote_gdbarch_data_handle
;
554 static struct remote_arch_state
*
555 get_remote_arch_state (void)
557 return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
);
560 /* Fetch the global remote target state. */
562 static struct remote_state
*
563 get_remote_state (void)
565 /* Make sure that the remote architecture state has been
566 initialized, because doing so might reallocate rs->buf. Any
567 function which calls getpkt also needs to be mindful of changes
568 to rs->buf, but this call limits the number of places which run
570 get_remote_arch_state ();
572 return get_remote_state_raw ();
576 compare_pnums (const void *lhs_
, const void *rhs_
)
578 const struct packet_reg
* const *lhs
= lhs_
;
579 const struct packet_reg
* const *rhs
= rhs_
;
581 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
583 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
590 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
592 int regnum
, num_remote_regs
, offset
;
593 struct packet_reg
**remote_regs
;
595 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
597 struct packet_reg
*r
= ®s
[regnum
];
599 if (register_size (gdbarch
, regnum
) == 0)
600 /* Do not try to fetch zero-sized (placeholder) registers. */
603 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
608 /* Define the g/G packet format as the contents of each register
609 with a remote protocol number, in order of ascending protocol
612 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
613 * sizeof (struct packet_reg
*));
614 for (num_remote_regs
= 0, regnum
= 0;
615 regnum
< gdbarch_num_regs (gdbarch
);
617 if (regs
[regnum
].pnum
!= -1)
618 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
620 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
623 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
625 remote_regs
[regnum
]->in_g_packet
= 1;
626 remote_regs
[regnum
]->offset
= offset
;
627 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
633 /* Given the architecture described by GDBARCH, return the remote
634 protocol register's number and the register's offset in the g/G
635 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
636 If the target does not have a mapping for REGNUM, return false,
637 otherwise, return true. */
640 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
641 int *pnum
, int *poffset
)
644 struct packet_reg
*regs
;
645 struct cleanup
*old_chain
;
647 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
649 regs
= xcalloc (gdbarch_num_regs (gdbarch
), sizeof (struct packet_reg
));
650 old_chain
= make_cleanup (xfree
, regs
);
652 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
654 *pnum
= regs
[regnum
].pnum
;
655 *poffset
= regs
[regnum
].offset
;
657 do_cleanups (old_chain
);
663 init_remote_state (struct gdbarch
*gdbarch
)
665 struct remote_state
*rs
= get_remote_state_raw ();
666 struct remote_arch_state
*rsa
;
668 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
670 /* Use the architecture to build a regnum<->pnum table, which will be
671 1:1 unless a feature set specifies otherwise. */
672 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
673 gdbarch_num_regs (gdbarch
),
676 /* Record the maximum possible size of the g packet - it may turn out
678 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
680 /* Default maximum number of characters in a packet body. Many
681 remote stubs have a hardwired buffer size of 400 bytes
682 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
683 as the maximum packet-size to ensure that the packet and an extra
684 NUL character can always fit in the buffer. This stops GDB
685 trashing stubs that try to squeeze an extra NUL into what is
686 already a full buffer (As of 1999-12-04 that was most stubs). */
687 rsa
->remote_packet_size
= 400 - 1;
689 /* This one is filled in when a ``g'' packet is received. */
690 rsa
->actual_register_packet_size
= 0;
692 /* Should rsa->sizeof_g_packet needs more space than the
693 default, adjust the size accordingly. Remember that each byte is
694 encoded as two characters. 32 is the overhead for the packet
695 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
696 (``$NN:G...#NN'') is a better guess, the below has been padded a
698 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
699 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
701 /* Make sure that the packet buffer is plenty big enough for
702 this architecture. */
703 if (rs
->buf_size
< rsa
->remote_packet_size
)
705 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
706 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
712 /* Return the current allowed size of a remote packet. This is
713 inferred from the current architecture, and should be used to
714 limit the length of outgoing packets. */
716 get_remote_packet_size (void)
718 struct remote_state
*rs
= get_remote_state ();
719 struct remote_arch_state
*rsa
= get_remote_arch_state ();
721 if (rs
->explicit_packet_size
)
722 return rs
->explicit_packet_size
;
724 return rsa
->remote_packet_size
;
727 static struct packet_reg
*
728 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
730 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
734 struct packet_reg
*r
= &rsa
->regs
[regnum
];
736 gdb_assert (r
->regnum
== regnum
);
741 static struct packet_reg
*
742 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
746 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
748 struct packet_reg
*r
= &rsa
->regs
[i
];
756 static struct target_ops remote_ops
;
758 static struct target_ops extended_remote_ops
;
760 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
761 ``forever'' still use the normal timeout mechanism. This is
762 currently used by the ASYNC code to guarentee that target reads
763 during the initial connect always time-out. Once getpkt has been
764 modified to return a timeout indication and, in turn
765 remote_wait()/wait_for_inferior() have gained a timeout parameter
767 static int wait_forever_enabled_p
= 1;
769 /* Allow the user to specify what sequence to send to the remote
770 when he requests a program interruption: Although ^C is usually
771 what remote systems expect (this is the default, here), it is
772 sometimes preferable to send a break. On other systems such
773 as the Linux kernel, a break followed by g, which is Magic SysRq g
774 is required in order to interrupt the execution. */
775 const char interrupt_sequence_control_c
[] = "Ctrl-C";
776 const char interrupt_sequence_break
[] = "BREAK";
777 const char interrupt_sequence_break_g
[] = "BREAK-g";
778 static const char *const interrupt_sequence_modes
[] =
780 interrupt_sequence_control_c
,
781 interrupt_sequence_break
,
782 interrupt_sequence_break_g
,
785 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
788 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
789 struct cmd_list_element
*c
,
792 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
793 fprintf_filtered (file
,
794 _("Send the ASCII ETX character (Ctrl-c) "
795 "to the remote target to interrupt the "
796 "execution of the program.\n"));
797 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
798 fprintf_filtered (file
,
799 _("send a break signal to the remote target "
800 "to interrupt the execution of the program.\n"));
801 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
802 fprintf_filtered (file
,
803 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
804 "the remote target to interrupt the execution "
805 "of Linux kernel.\n"));
807 internal_error (__FILE__
, __LINE__
,
808 _("Invalid value for interrupt_sequence_mode: %s."),
809 interrupt_sequence_mode
);
812 /* This boolean variable specifies whether interrupt_sequence is sent
813 to the remote target when gdb connects to it.
814 This is mostly needed when you debug the Linux kernel: The Linux kernel
815 expects BREAK g which is Magic SysRq g for connecting gdb. */
816 static int interrupt_on_connect
= 0;
818 /* This variable is used to implement the "set/show remotebreak" commands.
819 Since these commands are now deprecated in favor of "set/show remote
820 interrupt-sequence", it no longer has any effect on the code. */
821 static int remote_break
;
824 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
827 interrupt_sequence_mode
= interrupt_sequence_break
;
829 interrupt_sequence_mode
= interrupt_sequence_control_c
;
833 show_remotebreak (struct ui_file
*file
, int from_tty
,
834 struct cmd_list_element
*c
,
839 /* This variable sets the number of bits in an address that are to be
840 sent in a memory ("M" or "m") packet. Normally, after stripping
841 leading zeros, the entire address would be sent. This variable
842 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
843 initial implementation of remote.c restricted the address sent in
844 memory packets to ``host::sizeof long'' bytes - (typically 32
845 bits). Consequently, for 64 bit targets, the upper 32 bits of an
846 address was never sent. Since fixing this bug may cause a break in
847 some remote targets this variable is principly provided to
848 facilitate backward compatibility. */
850 static unsigned int remote_address_size
;
852 /* Temporary to track who currently owns the terminal. See
853 remote_terminal_* for more details. */
855 static int remote_async_terminal_ours_p
;
857 /* The executable file to use for "run" on the remote side. */
859 static char *remote_exec_file
= "";
862 /* User configurable variables for the number of characters in a
863 memory read/write packet. MIN (rsa->remote_packet_size,
864 rsa->sizeof_g_packet) is the default. Some targets need smaller
865 values (fifo overruns, et.al.) and some users need larger values
866 (speed up transfers). The variables ``preferred_*'' (the user
867 request), ``current_*'' (what was actually set) and ``forced_*''
868 (Positive - a soft limit, negative - a hard limit). */
870 struct memory_packet_config
877 /* Compute the current size of a read/write packet. Since this makes
878 use of ``actual_register_packet_size'' the computation is dynamic. */
881 get_memory_packet_size (struct memory_packet_config
*config
)
883 struct remote_state
*rs
= get_remote_state ();
884 struct remote_arch_state
*rsa
= get_remote_arch_state ();
886 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
887 law?) that some hosts don't cope very well with large alloca()
888 calls. Eventually the alloca() code will be replaced by calls to
889 xmalloc() and make_cleanups() allowing this restriction to either
890 be lifted or removed. */
891 #ifndef MAX_REMOTE_PACKET_SIZE
892 #define MAX_REMOTE_PACKET_SIZE 16384
894 /* NOTE: 20 ensures we can write at least one byte. */
895 #ifndef MIN_REMOTE_PACKET_SIZE
896 #define MIN_REMOTE_PACKET_SIZE 20
901 if (config
->size
<= 0)
902 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
904 what_they_get
= config
->size
;
908 what_they_get
= get_remote_packet_size ();
909 /* Limit the packet to the size specified by the user. */
911 && what_they_get
> config
->size
)
912 what_they_get
= config
->size
;
914 /* Limit it to the size of the targets ``g'' response unless we have
915 permission from the stub to use a larger packet size. */
916 if (rs
->explicit_packet_size
== 0
917 && rsa
->actual_register_packet_size
> 0
918 && what_they_get
> rsa
->actual_register_packet_size
)
919 what_they_get
= rsa
->actual_register_packet_size
;
921 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
922 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
923 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
924 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
926 /* Make sure there is room in the global buffer for this packet
927 (including its trailing NUL byte). */
928 if (rs
->buf_size
< what_they_get
+ 1)
930 rs
->buf_size
= 2 * what_they_get
;
931 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
934 return what_they_get
;
937 /* Update the size of a read/write packet. If they user wants
938 something really big then do a sanity check. */
941 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
943 int fixed_p
= config
->fixed_p
;
944 long size
= config
->size
;
947 error (_("Argument required (integer, `fixed' or `limited')."));
948 else if (strcmp (args
, "hard") == 0
949 || strcmp (args
, "fixed") == 0)
951 else if (strcmp (args
, "soft") == 0
952 || strcmp (args
, "limit") == 0)
958 size
= strtoul (args
, &end
, 0);
960 error (_("Invalid %s (bad syntax)."), config
->name
);
962 /* Instead of explicitly capping the size of a packet to
963 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
964 instead allowed to set the size to something arbitrarily
966 if (size
> MAX_REMOTE_PACKET_SIZE
)
967 error (_("Invalid %s (too large)."), config
->name
);
971 if (fixed_p
&& !config
->fixed_p
)
973 if (! query (_("The target may not be able to correctly handle a %s\n"
974 "of %ld bytes. Change the packet size? "),
976 error (_("Packet size not changed."));
978 /* Update the config. */
979 config
->fixed_p
= fixed_p
;
984 show_memory_packet_size (struct memory_packet_config
*config
)
986 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
988 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
989 get_memory_packet_size (config
));
991 printf_filtered (_("Packets are limited to %ld bytes.\n"),
992 get_memory_packet_size (config
));
995 static struct memory_packet_config memory_write_packet_config
=
997 "memory-write-packet-size",
1001 set_memory_write_packet_size (char *args
, int from_tty
)
1003 set_memory_packet_size (args
, &memory_write_packet_config
);
1007 show_memory_write_packet_size (char *args
, int from_tty
)
1009 show_memory_packet_size (&memory_write_packet_config
);
1013 get_memory_write_packet_size (void)
1015 return get_memory_packet_size (&memory_write_packet_config
);
1018 static struct memory_packet_config memory_read_packet_config
=
1020 "memory-read-packet-size",
1024 set_memory_read_packet_size (char *args
, int from_tty
)
1026 set_memory_packet_size (args
, &memory_read_packet_config
);
1030 show_memory_read_packet_size (char *args
, int from_tty
)
1032 show_memory_packet_size (&memory_read_packet_config
);
1036 get_memory_read_packet_size (void)
1038 long size
= get_memory_packet_size (&memory_read_packet_config
);
1040 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1041 extra buffer size argument before the memory read size can be
1042 increased beyond this. */
1043 if (size
> get_remote_packet_size ())
1044 size
= get_remote_packet_size ();
1049 /* Generic configuration support for packets the stub optionally
1050 supports. Allows the user to specify the use of the packet as well
1051 as allowing GDB to auto-detect support in the remote stub. */
1055 PACKET_SUPPORT_UNKNOWN
= 0,
1060 struct packet_config
1065 /* If auto, GDB auto-detects support for this packet or feature,
1066 either through qSupported, or by trying the packet and looking
1067 at the response. If true, GDB assumes the target supports this
1068 packet. If false, the packet is disabled. Configs that don't
1069 have an associated command always have this set to auto. */
1070 enum auto_boolean detect
;
1072 /* Does the target support this packet? */
1073 enum packet_support support
;
1076 /* Analyze a packet's return value and update the packet config
1086 static enum packet_support
packet_config_support (struct packet_config
*config
);
1087 static enum packet_support
packet_support (int packet
);
1090 show_packet_config_cmd (struct packet_config
*config
)
1092 char *support
= "internal-error";
1094 switch (packet_config_support (config
))
1097 support
= "enabled";
1099 case PACKET_DISABLE
:
1100 support
= "disabled";
1102 case PACKET_SUPPORT_UNKNOWN
:
1103 support
= "unknown";
1106 switch (config
->detect
)
1108 case AUTO_BOOLEAN_AUTO
:
1109 printf_filtered (_("Support for the `%s' packet "
1110 "is auto-detected, currently %s.\n"),
1111 config
->name
, support
);
1113 case AUTO_BOOLEAN_TRUE
:
1114 case AUTO_BOOLEAN_FALSE
:
1115 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1116 config
->name
, support
);
1122 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1123 const char *title
, int legacy
)
1129 config
->name
= name
;
1130 config
->title
= title
;
1131 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1133 show_doc
= xstrprintf ("Show current use of remote "
1134 "protocol `%s' (%s) packet",
1136 /* set/show TITLE-packet {auto,on,off} */
1137 cmd_name
= xstrprintf ("%s-packet", title
);
1138 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1139 &config
->detect
, set_doc
,
1140 show_doc
, NULL
, /* help_doc */
1142 show_remote_protocol_packet_cmd
,
1143 &remote_set_cmdlist
, &remote_show_cmdlist
);
1144 /* The command code copies the documentation strings. */
1147 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1152 legacy_name
= xstrprintf ("%s-packet", name
);
1153 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1154 &remote_set_cmdlist
);
1155 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1156 &remote_show_cmdlist
);
1160 static enum packet_result
1161 packet_check_result (const char *buf
)
1165 /* The stub recognized the packet request. Check that the
1166 operation succeeded. */
1168 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1170 /* "Enn" - definitly an error. */
1171 return PACKET_ERROR
;
1173 /* Always treat "E." as an error. This will be used for
1174 more verbose error messages, such as E.memtypes. */
1175 if (buf
[0] == 'E' && buf
[1] == '.')
1176 return PACKET_ERROR
;
1178 /* The packet may or may not be OK. Just assume it is. */
1182 /* The stub does not support the packet. */
1183 return PACKET_UNKNOWN
;
1186 static enum packet_result
1187 packet_ok (const char *buf
, struct packet_config
*config
)
1189 enum packet_result result
;
1191 if (config
->detect
!= AUTO_BOOLEAN_TRUE
1192 && config
->support
== PACKET_DISABLE
)
1193 internal_error (__FILE__
, __LINE__
,
1194 _("packet_ok: attempt to use a disabled packet"));
1196 result
= packet_check_result (buf
);
1201 /* The stub recognized the packet request. */
1202 if (config
->support
== PACKET_SUPPORT_UNKNOWN
)
1205 fprintf_unfiltered (gdb_stdlog
,
1206 "Packet %s (%s) is supported\n",
1207 config
->name
, config
->title
);
1208 config
->support
= PACKET_ENABLE
;
1211 case PACKET_UNKNOWN
:
1212 /* The stub does not support the packet. */
1213 if (config
->detect
== AUTO_BOOLEAN_AUTO
1214 && config
->support
== PACKET_ENABLE
)
1216 /* If the stub previously indicated that the packet was
1217 supported then there is a protocol error. */
1218 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1219 config
->name
, config
->title
);
1221 else if (config
->detect
== AUTO_BOOLEAN_TRUE
)
1223 /* The user set it wrong. */
1224 error (_("Enabled packet %s (%s) not recognized by stub"),
1225 config
->name
, config
->title
);
1229 fprintf_unfiltered (gdb_stdlog
,
1230 "Packet %s (%s) is NOT supported\n",
1231 config
->name
, config
->title
);
1232 config
->support
= PACKET_DISABLE
;
1252 PACKET_vFile_pwrite
,
1254 PACKET_vFile_unlink
,
1255 PACKET_vFile_readlink
,
1257 PACKET_qXfer_features
,
1258 PACKET_qXfer_libraries
,
1259 PACKET_qXfer_libraries_svr4
,
1260 PACKET_qXfer_memory_map
,
1261 PACKET_qXfer_spu_read
,
1262 PACKET_qXfer_spu_write
,
1263 PACKET_qXfer_osdata
,
1264 PACKET_qXfer_threads
,
1265 PACKET_qXfer_statictrace_read
,
1266 PACKET_qXfer_traceframe_info
,
1272 PACKET_QPassSignals
,
1273 PACKET_QProgramSignals
,
1275 PACKET_qSearch_memory
,
1278 PACKET_QStartNoAckMode
,
1280 PACKET_qXfer_siginfo_read
,
1281 PACKET_qXfer_siginfo_write
,
1284 /* Support for conditional tracepoints. */
1285 PACKET_ConditionalTracepoints
,
1287 /* Support for target-side breakpoint conditions. */
1288 PACKET_ConditionalBreakpoints
,
1290 /* Support for target-side breakpoint commands. */
1291 PACKET_BreakpointCommands
,
1293 /* Support for fast tracepoints. */
1294 PACKET_FastTracepoints
,
1296 /* Support for static tracepoints. */
1297 PACKET_StaticTracepoints
,
1299 /* Support for installing tracepoints while a trace experiment is
1301 PACKET_InstallInTrace
,
1305 PACKET_TracepointSource
,
1308 PACKET_QDisableRandomization
,
1310 PACKET_QTBuffer_size
,
1313 PACKET_qXfer_btrace
,
1315 /* Support for the QNonStop packet. */
1318 /* Support for multi-process extensions. */
1319 PACKET_multiprocess_feature
,
1321 /* Support for enabling and disabling tracepoints while a trace
1322 experiment is running. */
1323 PACKET_EnableDisableTracepoints_feature
,
1325 /* Support for collecting strings using the tracenz bytecode. */
1326 PACKET_tracenz_feature
,
1328 /* Support for continuing to run a trace experiment while GDB is
1330 PACKET_DisconnectedTracing_feature
,
1332 /* Support for qXfer:libraries-svr4:read with a non-empty annex. */
1333 PACKET_augmented_libraries_svr4_read_feature
,
1338 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1340 /* Returns whether a given packet or feature is supported. This takes
1341 into account the state of the corresponding "set remote foo-packet"
1342 command, which may be used to bypass auto-detection. */
1344 static enum packet_support
1345 packet_config_support (struct packet_config
*config
)
1347 switch (config
->detect
)
1349 case AUTO_BOOLEAN_TRUE
:
1350 return PACKET_ENABLE
;
1351 case AUTO_BOOLEAN_FALSE
:
1352 return PACKET_DISABLE
;
1353 case AUTO_BOOLEAN_AUTO
:
1354 return config
->support
;
1356 gdb_assert_not_reached (_("bad switch"));
1360 /* Same as packet_config_support, but takes the packet's enum value as
1363 static enum packet_support
1364 packet_support (int packet
)
1366 struct packet_config
*config
= &remote_protocol_packets
[packet
];
1368 return packet_config_support (config
);
1372 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1373 struct cmd_list_element
*c
,
1376 struct packet_config
*packet
;
1378 for (packet
= remote_protocol_packets
;
1379 packet
< &remote_protocol_packets
[PACKET_MAX
];
1382 if (&packet
->detect
== c
->var
)
1384 show_packet_config_cmd (packet
);
1388 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1392 /* Should we try one of the 'Z' requests? */
1396 Z_PACKET_SOFTWARE_BP
,
1397 Z_PACKET_HARDWARE_BP
,
1404 /* For compatibility with older distributions. Provide a ``set remote
1405 Z-packet ...'' command that updates all the Z packet types. */
1407 static enum auto_boolean remote_Z_packet_detect
;
1410 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1411 struct cmd_list_element
*c
)
1415 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1416 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1420 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1421 struct cmd_list_element
*c
,
1426 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1428 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1432 /* Returns true if the multi-process extensions are in effect. */
1435 remote_multi_process_p (struct remote_state
*rs
)
1437 return packet_support (PACKET_multiprocess_feature
) == PACKET_ENABLE
;
1440 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1441 static struct async_signal_handler
*async_sigint_remote_twice_token
;
1442 static struct async_signal_handler
*async_sigint_remote_token
;
1445 /* Asynchronous signal handle registered as event loop source for
1446 when we have pending events ready to be passed to the core. */
1448 static struct async_event_handler
*remote_async_inferior_event_token
;
1452 static ptid_t magic_null_ptid
;
1453 static ptid_t not_sent_ptid
;
1454 static ptid_t any_thread_ptid
;
1456 /* Find out if the stub attached to PID (and hence GDB should offer to
1457 detach instead of killing it when bailing out). */
1460 remote_query_attached (int pid
)
1462 struct remote_state
*rs
= get_remote_state ();
1463 size_t size
= get_remote_packet_size ();
1465 if (packet_support (PACKET_qAttached
) == PACKET_DISABLE
)
1468 if (remote_multi_process_p (rs
))
1469 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1471 xsnprintf (rs
->buf
, size
, "qAttached");
1474 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1476 switch (packet_ok (rs
->buf
,
1477 &remote_protocol_packets
[PACKET_qAttached
]))
1480 if (strcmp (rs
->buf
, "1") == 0)
1484 warning (_("Remote failure reply: %s"), rs
->buf
);
1486 case PACKET_UNKNOWN
:
1493 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1494 has been invented by GDB, instead of reported by the target. Since
1495 we can be connected to a remote system before before knowing about
1496 any inferior, mark the target with execution when we find the first
1497 inferior. If ATTACHED is 1, then we had just attached to this
1498 inferior. If it is 0, then we just created this inferior. If it
1499 is -1, then try querying the remote stub to find out if it had
1500 attached to the inferior or not. */
1502 static struct inferior
*
1503 remote_add_inferior (int fake_pid_p
, int pid
, int attached
)
1505 struct inferior
*inf
;
1507 /* Check whether this process we're learning about is to be
1508 considered attached, or if is to be considered to have been
1509 spawned by the stub. */
1511 attached
= remote_query_attached (pid
);
1513 if (gdbarch_has_global_solist (target_gdbarch ()))
1515 /* If the target shares code across all inferiors, then every
1516 attach adds a new inferior. */
1517 inf
= add_inferior (pid
);
1519 /* ... and every inferior is bound to the same program space.
1520 However, each inferior may still have its own address
1522 inf
->aspace
= maybe_new_address_space ();
1523 inf
->pspace
= current_program_space
;
1527 /* In the traditional debugging scenario, there's a 1-1 match
1528 between program/address spaces. We simply bind the inferior
1529 to the program space's address space. */
1530 inf
= current_inferior ();
1531 inferior_appeared (inf
, pid
);
1534 inf
->attach_flag
= attached
;
1535 inf
->fake_pid_p
= fake_pid_p
;
1540 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1541 according to RUNNING. */
1544 remote_add_thread (ptid_t ptid
, int running
)
1546 struct remote_state
*rs
= get_remote_state ();
1548 /* GDB historically didn't pull threads in the initial connection
1549 setup. If the remote target doesn't even have a concept of
1550 threads (e.g., a bare-metal target), even if internally we
1551 consider that a single-threaded target, mentioning a new thread
1552 might be confusing to the user. Be silent then, preserving the
1553 age old behavior. */
1554 if (rs
->starting_up
)
1555 add_thread_silent (ptid
);
1559 set_executing (ptid
, running
);
1560 set_running (ptid
, running
);
1563 /* Come here when we learn about a thread id from the remote target.
1564 It may be the first time we hear about such thread, so take the
1565 opportunity to add it to GDB's thread list. In case this is the
1566 first time we're noticing its corresponding inferior, add it to
1567 GDB's inferior list as well. */
1570 remote_notice_new_inferior (ptid_t currthread
, int running
)
1572 /* If this is a new thread, add it to GDB's thread list.
1573 If we leave it up to WFI to do this, bad things will happen. */
1575 if (in_thread_list (currthread
) && is_exited (currthread
))
1577 /* We're seeing an event on a thread id we knew had exited.
1578 This has to be a new thread reusing the old id. Add it. */
1579 remote_add_thread (currthread
, running
);
1583 if (!in_thread_list (currthread
))
1585 struct inferior
*inf
= NULL
;
1586 int pid
= ptid_get_pid (currthread
);
1588 if (ptid_is_pid (inferior_ptid
)
1589 && pid
== ptid_get_pid (inferior_ptid
))
1591 /* inferior_ptid has no thread member yet. This can happen
1592 with the vAttach -> remote_wait,"TAAthread:" path if the
1593 stub doesn't support qC. This is the first stop reported
1594 after an attach, so this is the main thread. Update the
1595 ptid in the thread list. */
1596 if (in_thread_list (pid_to_ptid (pid
)))
1597 thread_change_ptid (inferior_ptid
, currthread
);
1600 remote_add_thread (currthread
, running
);
1601 inferior_ptid
= currthread
;
1606 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1608 /* inferior_ptid is not set yet. This can happen with the
1609 vRun -> remote_wait,"TAAthread:" path if the stub
1610 doesn't support qC. This is the first stop reported
1611 after an attach, so this is the main thread. Update the
1612 ptid in the thread list. */
1613 thread_change_ptid (inferior_ptid
, currthread
);
1617 /* When connecting to a target remote, or to a target
1618 extended-remote which already was debugging an inferior, we
1619 may not know about it yet. Add it before adding its child
1620 thread, so notifications are emitted in a sensible order. */
1621 if (!in_inferior_list (ptid_get_pid (currthread
)))
1623 struct remote_state
*rs
= get_remote_state ();
1624 int fake_pid_p
= !remote_multi_process_p (rs
);
1626 inf
= remote_add_inferior (fake_pid_p
,
1627 ptid_get_pid (currthread
), -1);
1630 /* This is really a new thread. Add it. */
1631 remote_add_thread (currthread
, running
);
1633 /* If we found a new inferior, let the common code do whatever
1634 it needs to with it (e.g., read shared libraries, insert
1635 breakpoints), unless we're just setting up an all-stop
1639 struct remote_state
*rs
= get_remote_state ();
1641 if (non_stop
|| !rs
->starting_up
)
1642 notice_new_inferior (currthread
, running
, 0);
1647 /* Return the private thread data, creating it if necessary. */
1649 static struct private_thread_info
*
1650 demand_private_info (ptid_t ptid
)
1652 struct thread_info
*info
= find_thread_ptid (ptid
);
1658 info
->private = xmalloc (sizeof (*(info
->private)));
1659 info
->private_dtor
= free_private_thread_info
;
1660 info
->private->core
= -1;
1661 info
->private->extra
= 0;
1664 return info
->private;
1667 /* Call this function as a result of
1668 1) A halt indication (T packet) containing a thread id
1669 2) A direct query of currthread
1670 3) Successful execution of set thread */
1673 record_currthread (struct remote_state
*rs
, ptid_t currthread
)
1675 rs
->general_thread
= currthread
;
1678 /* If 'QPassSignals' is supported, tell the remote stub what signals
1679 it can simply pass through to the inferior without reporting. */
1682 remote_pass_signals (struct target_ops
*self
,
1683 int numsigs
, unsigned char *pass_signals
)
1685 if (packet_support (PACKET_QPassSignals
) != PACKET_DISABLE
)
1687 char *pass_packet
, *p
;
1689 struct remote_state
*rs
= get_remote_state ();
1691 gdb_assert (numsigs
< 256);
1692 for (i
= 0; i
< numsigs
; i
++)
1694 if (pass_signals
[i
])
1697 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1698 strcpy (pass_packet
, "QPassSignals:");
1699 p
= pass_packet
+ strlen (pass_packet
);
1700 for (i
= 0; i
< numsigs
; i
++)
1702 if (pass_signals
[i
])
1705 *p
++ = tohex (i
>> 4);
1706 *p
++ = tohex (i
& 15);
1715 if (!rs
->last_pass_packet
|| strcmp (rs
->last_pass_packet
, pass_packet
))
1717 putpkt (pass_packet
);
1718 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1719 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1720 if (rs
->last_pass_packet
)
1721 xfree (rs
->last_pass_packet
);
1722 rs
->last_pass_packet
= pass_packet
;
1725 xfree (pass_packet
);
1729 /* If 'QProgramSignals' is supported, tell the remote stub what
1730 signals it should pass through to the inferior when detaching. */
1733 remote_program_signals (struct target_ops
*self
,
1734 int numsigs
, unsigned char *signals
)
1736 if (packet_support (PACKET_QProgramSignals
) != PACKET_DISABLE
)
1740 struct remote_state
*rs
= get_remote_state ();
1742 gdb_assert (numsigs
< 256);
1743 for (i
= 0; i
< numsigs
; i
++)
1748 packet
= xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
1749 strcpy (packet
, "QProgramSignals:");
1750 p
= packet
+ strlen (packet
);
1751 for (i
= 0; i
< numsigs
; i
++)
1753 if (signal_pass_state (i
))
1756 *p
++ = tohex (i
>> 4);
1757 *p
++ = tohex (i
& 15);
1766 if (!rs
->last_program_signals_packet
1767 || strcmp (rs
->last_program_signals_packet
, packet
) != 0)
1770 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1771 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
1772 xfree (rs
->last_program_signals_packet
);
1773 rs
->last_program_signals_packet
= packet
;
1780 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1781 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1782 thread. If GEN is set, set the general thread, if not, then set
1783 the step/continue thread. */
1785 set_thread (struct ptid ptid
, int gen
)
1787 struct remote_state
*rs
= get_remote_state ();
1788 ptid_t state
= gen
? rs
->general_thread
: rs
->continue_thread
;
1789 char *buf
= rs
->buf
;
1790 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1792 if (ptid_equal (state
, ptid
))
1796 *buf
++ = gen
? 'g' : 'c';
1797 if (ptid_equal (ptid
, magic_null_ptid
))
1798 xsnprintf (buf
, endbuf
- buf
, "0");
1799 else if (ptid_equal (ptid
, any_thread_ptid
))
1800 xsnprintf (buf
, endbuf
- buf
, "0");
1801 else if (ptid_equal (ptid
, minus_one_ptid
))
1802 xsnprintf (buf
, endbuf
- buf
, "-1");
1804 write_ptid (buf
, endbuf
, ptid
);
1806 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1808 rs
->general_thread
= ptid
;
1810 rs
->continue_thread
= ptid
;
1814 set_general_thread (struct ptid ptid
)
1816 set_thread (ptid
, 1);
1820 set_continue_thread (struct ptid ptid
)
1822 set_thread (ptid
, 0);
1825 /* Change the remote current process. Which thread within the process
1826 ends up selected isn't important, as long as it is the same process
1827 as what INFERIOR_PTID points to.
1829 This comes from that fact that there is no explicit notion of
1830 "selected process" in the protocol. The selected process for
1831 general operations is the process the selected general thread
1835 set_general_process (void)
1837 struct remote_state
*rs
= get_remote_state ();
1839 /* If the remote can't handle multiple processes, don't bother. */
1840 if (!rs
->extended
|| !remote_multi_process_p (rs
))
1843 /* We only need to change the remote current thread if it's pointing
1844 at some other process. */
1845 if (ptid_get_pid (rs
->general_thread
) != ptid_get_pid (inferior_ptid
))
1846 set_general_thread (inferior_ptid
);
1850 /* Return nonzero if the thread PTID is still alive on the remote
1854 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1856 struct remote_state
*rs
= get_remote_state ();
1859 if (ptid_equal (ptid
, magic_null_ptid
))
1860 /* The main thread is always alive. */
1863 if (ptid_get_pid (ptid
) != 0 && ptid_get_lwp (ptid
) == 0)
1864 /* The main thread is always alive. This can happen after a
1865 vAttach, if the remote side doesn't support
1870 endp
= rs
->buf
+ get_remote_packet_size ();
1873 write_ptid (p
, endp
, ptid
);
1876 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1877 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1880 /* About these extended threadlist and threadinfo packets. They are
1881 variable length packets but, the fields within them are often fixed
1882 length. They are redundent enough to send over UDP as is the
1883 remote protocol in general. There is a matching unit test module
1886 /* WARNING: This threadref data structure comes from the remote O.S.,
1887 libstub protocol encoding, and remote.c. It is not particularly
1890 /* Right now, the internal structure is int. We want it to be bigger.
1891 Plan to fix this. */
1893 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1895 /* gdb_ext_thread_info is an internal GDB data structure which is
1896 equivalent to the reply of the remote threadinfo packet. */
1898 struct gdb_ext_thread_info
1900 threadref threadid
; /* External form of thread reference. */
1901 int active
; /* Has state interesting to GDB?
1903 char display
[256]; /* Brief state display, name,
1904 blocked/suspended. */
1905 char shortname
[32]; /* To be used to name threads. */
1906 char more_display
[256]; /* Long info, statistics, queue depth,
1910 /* The volume of remote transfers can be limited by submitting
1911 a mask containing bits specifying the desired information.
1912 Use a union of these values as the 'selection' parameter to
1913 get_thread_info. FIXME: Make these TAG names more thread specific. */
1915 #define TAG_THREADID 1
1916 #define TAG_EXISTS 2
1917 #define TAG_DISPLAY 4
1918 #define TAG_THREADNAME 8
1919 #define TAG_MOREDISPLAY 16
1921 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1923 static char *unpack_nibble (char *buf
, int *val
);
1925 static char *unpack_byte (char *buf
, int *value
);
1927 static char *pack_int (char *buf
, int value
);
1929 static char *unpack_int (char *buf
, int *value
);
1931 static char *unpack_string (char *src
, char *dest
, int length
);
1933 static char *pack_threadid (char *pkt
, threadref
*id
);
1935 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1937 void int_to_threadref (threadref
*id
, int value
);
1939 static int threadref_to_int (threadref
*ref
);
1941 static void copy_threadref (threadref
*dest
, threadref
*src
);
1943 static int threadmatch (threadref
*dest
, threadref
*src
);
1945 static char *pack_threadinfo_request (char *pkt
, int mode
,
1948 static int remote_unpack_thread_info_response (char *pkt
,
1949 threadref
*expectedref
,
1950 struct gdb_ext_thread_info
1954 static int remote_get_threadinfo (threadref
*threadid
,
1955 int fieldset
, /*TAG mask */
1956 struct gdb_ext_thread_info
*info
);
1958 static char *pack_threadlist_request (char *pkt
, int startflag
,
1960 threadref
*nextthread
);
1962 static int parse_threadlist_response (char *pkt
,
1964 threadref
*original_echo
,
1965 threadref
*resultlist
,
1968 static int remote_get_threadlist (int startflag
,
1969 threadref
*nextthread
,
1973 threadref
*threadlist
);
1975 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1977 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1978 void *context
, int looplimit
);
1980 static int remote_newthread_step (threadref
*ref
, void *context
);
1983 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1984 buffer we're allowed to write to. Returns
1985 BUF+CHARACTERS_WRITTEN. */
1988 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1991 struct remote_state
*rs
= get_remote_state ();
1993 if (remote_multi_process_p (rs
))
1995 pid
= ptid_get_pid (ptid
);
1997 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
1999 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
2001 tid
= ptid_get_lwp (ptid
);
2003 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
2005 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
2010 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
2011 passed the last parsed char. Returns null_ptid on error. */
2014 read_ptid (char *buf
, char **obuf
)
2018 ULONGEST pid
= 0, tid
= 0;
2022 /* Multi-process ptid. */
2023 pp
= unpack_varlen_hex (p
+ 1, &pid
);
2025 error (_("invalid remote ptid: %s"), p
);
2028 pp
= unpack_varlen_hex (p
+ 1, &tid
);
2031 return ptid_build (pid
, tid
, 0);
2034 /* No multi-process. Just a tid. */
2035 pp
= unpack_varlen_hex (p
, &tid
);
2037 /* Since the stub is not sending a process id, then default to
2038 what's in inferior_ptid, unless it's null at this point. If so,
2039 then since there's no way to know the pid of the reported
2040 threads, use the magic number. */
2041 if (ptid_equal (inferior_ptid
, null_ptid
))
2042 pid
= ptid_get_pid (magic_null_ptid
);
2044 pid
= ptid_get_pid (inferior_ptid
);
2048 return ptid_build (pid
, tid
, 0);
2054 if (ch
>= 'a' && ch
<= 'f')
2055 return ch
- 'a' + 10;
2056 if (ch
>= '0' && ch
<= '9')
2058 if (ch
>= 'A' && ch
<= 'F')
2059 return ch
- 'A' + 10;
2064 stub_unpack_int (char *buff
, int fieldlength
)
2071 nibble
= stubhex (*buff
++);
2075 retval
= retval
<< 4;
2081 unpack_nibble (char *buf
, int *val
)
2083 *val
= fromhex (*buf
++);
2088 unpack_byte (char *buf
, int *value
)
2090 *value
= stub_unpack_int (buf
, 2);
2095 pack_int (char *buf
, int value
)
2097 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2098 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2099 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2100 buf
= pack_hex_byte (buf
, (value
& 0xff));
2105 unpack_int (char *buf
, int *value
)
2107 *value
= stub_unpack_int (buf
, 8);
2111 #if 0 /* Currently unused, uncomment when needed. */
2112 static char *pack_string (char *pkt
, char *string
);
2115 pack_string (char *pkt
, char *string
)
2120 len
= strlen (string
);
2122 len
= 200; /* Bigger than most GDB packets, junk??? */
2123 pkt
= pack_hex_byte (pkt
, len
);
2127 if ((ch
== '\0') || (ch
== '#'))
2128 ch
= '*'; /* Protect encapsulation. */
2133 #endif /* 0 (unused) */
2136 unpack_string (char *src
, char *dest
, int length
)
2145 pack_threadid (char *pkt
, threadref
*id
)
2148 unsigned char *altid
;
2150 altid
= (unsigned char *) id
;
2151 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2153 pkt
= pack_hex_byte (pkt
, *altid
++);
2159 unpack_threadid (char *inbuf
, threadref
*id
)
2162 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2165 altref
= (char *) id
;
2167 while (inbuf
< limit
)
2169 x
= stubhex (*inbuf
++);
2170 y
= stubhex (*inbuf
++);
2171 *altref
++ = (x
<< 4) | y
;
2176 /* Externally, threadrefs are 64 bits but internally, they are still
2177 ints. This is due to a mismatch of specifications. We would like
2178 to use 64bit thread references internally. This is an adapter
2182 int_to_threadref (threadref
*id
, int value
)
2184 unsigned char *scan
;
2186 scan
= (unsigned char *) id
;
2192 *scan
++ = (value
>> 24) & 0xff;
2193 *scan
++ = (value
>> 16) & 0xff;
2194 *scan
++ = (value
>> 8) & 0xff;
2195 *scan
++ = (value
& 0xff);
2199 threadref_to_int (threadref
*ref
)
2202 unsigned char *scan
;
2208 value
= (value
<< 8) | ((*scan
++) & 0xff);
2213 copy_threadref (threadref
*dest
, threadref
*src
)
2216 unsigned char *csrc
, *cdest
;
2218 csrc
= (unsigned char *) src
;
2219 cdest
= (unsigned char *) dest
;
2226 threadmatch (threadref
*dest
, threadref
*src
)
2228 /* Things are broken right now, so just assume we got a match. */
2230 unsigned char *srcp
, *destp
;
2232 srcp
= (char *) src
;
2233 destp
= (char *) dest
;
2237 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2244 threadid:1, # always request threadid
2251 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2254 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2256 *pkt
++ = 'q'; /* Info Query */
2257 *pkt
++ = 'P'; /* process or thread info */
2258 pkt
= pack_int (pkt
, mode
); /* mode */
2259 pkt
= pack_threadid (pkt
, id
); /* threadid */
2260 *pkt
= '\0'; /* terminate */
2264 /* These values tag the fields in a thread info response packet. */
2265 /* Tagging the fields allows us to request specific fields and to
2266 add more fields as time goes by. */
2268 #define TAG_THREADID 1 /* Echo the thread identifier. */
2269 #define TAG_EXISTS 2 /* Is this process defined enough to
2270 fetch registers and its stack? */
2271 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2272 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2273 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2277 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2278 struct gdb_ext_thread_info
*info
)
2280 struct remote_state
*rs
= get_remote_state ();
2284 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2287 /* info->threadid = 0; FIXME: implement zero_threadref. */
2289 info
->display
[0] = '\0';
2290 info
->shortname
[0] = '\0';
2291 info
->more_display
[0] = '\0';
2293 /* Assume the characters indicating the packet type have been
2295 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2296 pkt
= unpack_threadid (pkt
, &ref
);
2299 warning (_("Incomplete response to threadinfo request."));
2300 if (!threadmatch (&ref
, expectedref
))
2301 { /* This is an answer to a different request. */
2302 warning (_("ERROR RMT Thread info mismatch."));
2305 copy_threadref (&info
->threadid
, &ref
);
2307 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2309 /* Packets are terminated with nulls. */
2310 while ((pkt
< limit
) && mask
&& *pkt
)
2312 pkt
= unpack_int (pkt
, &tag
); /* tag */
2313 pkt
= unpack_byte (pkt
, &length
); /* length */
2314 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2316 warning (_("ERROR RMT: threadinfo tag mismatch."));
2320 if (tag
== TAG_THREADID
)
2324 warning (_("ERROR RMT: length of threadid is not 16."));
2328 pkt
= unpack_threadid (pkt
, &ref
);
2329 mask
= mask
& ~TAG_THREADID
;
2332 if (tag
== TAG_EXISTS
)
2334 info
->active
= stub_unpack_int (pkt
, length
);
2336 mask
= mask
& ~(TAG_EXISTS
);
2339 warning (_("ERROR RMT: 'exists' length too long."));
2345 if (tag
== TAG_THREADNAME
)
2347 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2348 mask
= mask
& ~TAG_THREADNAME
;
2351 if (tag
== TAG_DISPLAY
)
2353 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2354 mask
= mask
& ~TAG_DISPLAY
;
2357 if (tag
== TAG_MOREDISPLAY
)
2359 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2360 mask
= mask
& ~TAG_MOREDISPLAY
;
2363 warning (_("ERROR RMT: unknown thread info tag."));
2364 break; /* Not a tag we know about. */
2370 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2371 struct gdb_ext_thread_info
*info
)
2373 struct remote_state
*rs
= get_remote_state ();
2376 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2378 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2380 if (rs
->buf
[0] == '\0')
2383 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2388 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2391 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2392 threadref
*nextthread
)
2394 *pkt
++ = 'q'; /* info query packet */
2395 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2396 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2397 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2398 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2403 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2406 parse_threadlist_response (char *pkt
, int result_limit
,
2407 threadref
*original_echo
, threadref
*resultlist
,
2410 struct remote_state
*rs
= get_remote_state ();
2412 int count
, resultcount
, done
;
2415 /* Assume the 'q' and 'M chars have been stripped. */
2416 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2417 /* done parse past here */
2418 pkt
= unpack_byte (pkt
, &count
); /* count field */
2419 pkt
= unpack_nibble (pkt
, &done
);
2420 /* The first threadid is the argument threadid. */
2421 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2422 while ((count
-- > 0) && (pkt
< limit
))
2424 pkt
= unpack_threadid (pkt
, resultlist
++);
2425 if (resultcount
++ >= result_limit
)
2434 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2435 int *done
, int *result_count
, threadref
*threadlist
)
2437 struct remote_state
*rs
= get_remote_state ();
2440 /* Trancate result limit to be smaller than the packet size. */
2441 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2442 >= get_remote_packet_size ())
2443 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2445 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2447 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2449 if (*rs
->buf
== '\0')
2453 parse_threadlist_response (rs
->buf
+ 2, result_limit
,
2454 &rs
->echo_nextthread
, threadlist
, done
);
2456 if (!threadmatch (&rs
->echo_nextthread
, nextthread
))
2458 /* FIXME: This is a good reason to drop the packet. */
2459 /* Possably, there is a duplicate response. */
2461 retransmit immediatly - race conditions
2462 retransmit after timeout - yes
2464 wait for packet, then exit
2466 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2467 return 0; /* I choose simply exiting. */
2469 if (*result_count
<= 0)
2473 warning (_("RMT ERROR : failed to get remote thread list."));
2476 return result
; /* break; */
2478 if (*result_count
> result_limit
)
2481 warning (_("RMT ERROR: threadlist response longer than requested."));
2487 /* This is the interface between remote and threads, remotes upper
2490 /* remote_find_new_threads retrieves the thread list and for each
2491 thread in the list, looks up the thread in GDB's internal list,
2492 adding the thread if it does not already exist. This involves
2493 getting partial thread lists from the remote target so, polling the
2494 quit_flag is required. */
2498 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2501 struct remote_state
*rs
= get_remote_state ();
2502 int done
, i
, result_count
;
2510 if (loopcount
++ > looplimit
)
2513 warning (_("Remote fetch threadlist -infinite loop-."));
2516 if (!remote_get_threadlist (startflag
, &rs
->nextthread
,
2517 MAXTHREADLISTRESULTS
,
2518 &done
, &result_count
, rs
->resultthreadlist
))
2523 /* Clear for later iterations. */
2525 /* Setup to resume next batch of thread references, set nextthread. */
2526 if (result_count
>= 1)
2527 copy_threadref (&rs
->nextthread
,
2528 &rs
->resultthreadlist
[result_count
- 1]);
2530 while (result_count
--)
2531 if (!(result
= (*stepfunction
) (&rs
->resultthreadlist
[i
++], context
)))
2538 remote_newthread_step (threadref
*ref
, void *context
)
2540 int pid
= ptid_get_pid (inferior_ptid
);
2541 ptid_t ptid
= ptid_build (pid
, threadref_to_int (ref
), 0);
2543 if (!in_thread_list (ptid
))
2545 return 1; /* continue iterator */
2548 #define CRAZY_MAX_THREADS 1000
2551 remote_current_thread (ptid_t oldpid
)
2553 struct remote_state
*rs
= get_remote_state ();
2556 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2557 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2558 return read_ptid (&rs
->buf
[2], NULL
);
2563 /* Find new threads for info threads command.
2564 * Original version, using John Metzler's thread protocol.
2568 remote_find_new_threads (void)
2570 remote_threadlist_iterator (remote_newthread_step
, 0,
2574 #if defined(HAVE_LIBEXPAT)
2576 typedef struct thread_item
2582 DEF_VEC_O(thread_item_t
);
2584 struct threads_parsing_context
2586 VEC (thread_item_t
) *items
;
2590 start_thread (struct gdb_xml_parser
*parser
,
2591 const struct gdb_xml_element
*element
,
2592 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2594 struct threads_parsing_context
*data
= user_data
;
2596 struct thread_item item
;
2598 struct gdb_xml_value
*attr
;
2600 id
= xml_find_attribute (attributes
, "id")->value
;
2601 item
.ptid
= read_ptid (id
, NULL
);
2603 attr
= xml_find_attribute (attributes
, "core");
2605 item
.core
= *(ULONGEST
*) attr
->value
;
2611 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2615 end_thread (struct gdb_xml_parser
*parser
,
2616 const struct gdb_xml_element
*element
,
2617 void *user_data
, const char *body_text
)
2619 struct threads_parsing_context
*data
= user_data
;
2621 if (body_text
&& *body_text
)
2622 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2625 const struct gdb_xml_attribute thread_attributes
[] = {
2626 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2627 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2628 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2631 const struct gdb_xml_element thread_children
[] = {
2632 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2635 const struct gdb_xml_element threads_children
[] = {
2636 { "thread", thread_attributes
, thread_children
,
2637 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2638 start_thread
, end_thread
},
2639 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2642 const struct gdb_xml_element threads_elements
[] = {
2643 { "threads", NULL
, threads_children
,
2644 GDB_XML_EF_NONE
, NULL
, NULL
},
2645 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2648 /* Discard the contents of the constructed thread info context. */
2651 clear_threads_parsing_context (void *p
)
2653 struct threads_parsing_context
*context
= p
;
2655 struct thread_item
*item
;
2657 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2658 xfree (item
->extra
);
2660 VEC_free (thread_item_t
, context
->items
);
2666 * Find all threads for info threads command.
2667 * Uses new thread protocol contributed by Cisco.
2668 * Falls back and attempts to use the older method (above)
2669 * if the target doesn't respond to the new method.
2673 remote_threads_info (struct target_ops
*ops
)
2675 struct remote_state
*rs
= get_remote_state ();
2679 if (rs
->remote_desc
== 0) /* paranoia */
2680 error (_("Command can only be used when connected to the remote target."));
2682 #if defined(HAVE_LIBEXPAT)
2683 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
2685 char *xml
= target_read_stralloc (¤t_target
,
2686 TARGET_OBJECT_THREADS
, NULL
);
2688 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2692 struct threads_parsing_context context
;
2694 context
.items
= NULL
;
2695 make_cleanup (clear_threads_parsing_context
, &context
);
2697 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2698 threads_elements
, xml
, &context
) == 0)
2701 struct thread_item
*item
;
2704 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2707 if (!ptid_equal (item
->ptid
, null_ptid
))
2709 struct private_thread_info
*info
;
2710 /* In non-stop mode, we assume new found threads
2711 are running until proven otherwise with a
2712 stop reply. In all-stop, we can only get
2713 here if all threads are stopped. */
2714 int running
= non_stop
? 1 : 0;
2716 remote_notice_new_inferior (item
->ptid
, running
);
2718 info
= demand_private_info (item
->ptid
);
2719 info
->core
= item
->core
;
2720 info
->extra
= item
->extra
;
2727 do_cleanups (back_to
);
2732 if (rs
->use_threadinfo_query
)
2734 putpkt ("qfThreadInfo");
2735 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2737 if (bufp
[0] != '\0') /* q packet recognized */
2739 struct cleanup
*old_chain
;
2742 /* remote_notice_new_inferior (in the loop below) may make
2743 new RSP calls, which clobber rs->buf. Work with a
2745 bufp
= saved_reply
= xstrdup (rs
->buf
);
2746 old_chain
= make_cleanup (free_current_contents
, &saved_reply
);
2748 while (*bufp
++ == 'm') /* reply contains one or more TID */
2752 new_thread
= read_ptid (bufp
, &bufp
);
2753 if (!ptid_equal (new_thread
, null_ptid
))
2755 /* In non-stop mode, we assume new found threads
2756 are running until proven otherwise with a
2757 stop reply. In all-stop, we can only get
2758 here if all threads are stopped. */
2759 int running
= non_stop
? 1 : 0;
2761 remote_notice_new_inferior (new_thread
, running
);
2764 while (*bufp
++ == ','); /* comma-separated list */
2765 free_current_contents (&saved_reply
);
2766 putpkt ("qsThreadInfo");
2767 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2768 bufp
= saved_reply
= xstrdup (rs
->buf
);
2770 do_cleanups (old_chain
);
2775 /* Only qfThreadInfo is supported in non-stop mode. */
2779 /* Else fall back to old method based on jmetzler protocol. */
2780 rs
->use_threadinfo_query
= 0;
2781 remote_find_new_threads ();
2786 * Collect a descriptive string about the given thread.
2787 * The target may say anything it wants to about the thread
2788 * (typically info about its blocked / runnable state, name, etc.).
2789 * This string will appear in the info threads display.
2791 * Optional: targets are not required to implement this function.
2795 remote_threads_extra_info (struct target_ops
*self
, struct thread_info
*tp
)
2797 struct remote_state
*rs
= get_remote_state ();
2801 struct gdb_ext_thread_info threadinfo
;
2802 static char display_buf
[100]; /* arbitrary... */
2803 int n
= 0; /* position in display_buf */
2805 if (rs
->remote_desc
== 0) /* paranoia */
2806 internal_error (__FILE__
, __LINE__
,
2807 _("remote_threads_extra_info"));
2809 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2810 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_lwp (tp
->ptid
) == 0))
2811 /* This is the main thread which was added by GDB. The remote
2812 server doesn't know about it. */
2815 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
2817 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2819 if (info
&& info
->private)
2820 return info
->private->extra
;
2825 if (rs
->use_threadextra_query
)
2828 char *endb
= rs
->buf
+ get_remote_packet_size ();
2830 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2832 write_ptid (b
, endb
, tp
->ptid
);
2835 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2836 if (rs
->buf
[0] != 0)
2838 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2839 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2840 display_buf
[result
] = '\0';
2845 /* If the above query fails, fall back to the old method. */
2846 rs
->use_threadextra_query
= 0;
2847 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2848 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2849 int_to_threadref (&id
, ptid_get_lwp (tp
->ptid
));
2850 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2851 if (threadinfo
.active
)
2853 if (*threadinfo
.shortname
)
2854 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2855 " Name: %s,", threadinfo
.shortname
);
2856 if (*threadinfo
.display
)
2857 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2858 " State: %s,", threadinfo
.display
);
2859 if (*threadinfo
.more_display
)
2860 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2861 " Priority: %s", threadinfo
.more_display
);
2865 /* For purely cosmetic reasons, clear up trailing commas. */
2866 if (',' == display_buf
[n
-1])
2867 display_buf
[n
-1] = ' ';
2876 remote_static_tracepoint_marker_at (struct target_ops
*self
, CORE_ADDR addr
,
2877 struct static_tracepoint_marker
*marker
)
2879 struct remote_state
*rs
= get_remote_state ();
2882 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
2884 p
+= hexnumstr (p
, addr
);
2886 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2890 error (_("Remote failure reply: %s"), p
);
2894 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2901 static VEC(static_tracepoint_marker_p
) *
2902 remote_static_tracepoint_markers_by_strid (struct target_ops
*self
,
2905 struct remote_state
*rs
= get_remote_state ();
2906 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2907 struct static_tracepoint_marker
*marker
= NULL
;
2908 struct cleanup
*old_chain
;
2911 /* Ask for a first packet of static tracepoint marker
2914 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2917 error (_("Remote failure reply: %s"), p
);
2919 old_chain
= make_cleanup (free_current_marker
, &marker
);
2924 marker
= XCNEW (struct static_tracepoint_marker
);
2928 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2930 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2932 VEC_safe_push (static_tracepoint_marker_p
,
2938 release_static_tracepoint_marker (marker
);
2939 memset (marker
, 0, sizeof (*marker
));
2942 while (*p
++ == ','); /* comma-separated list */
2943 /* Ask for another packet of static tracepoint definition. */
2945 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2949 do_cleanups (old_chain
);
2954 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2957 remote_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long thread
)
2959 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, 0);
2963 /* Restart the remote side; this is an extended protocol operation. */
2966 extended_remote_restart (void)
2968 struct remote_state
*rs
= get_remote_state ();
2970 /* Send the restart command; for reasons I don't understand the
2971 remote side really expects a number after the "R". */
2972 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2975 remote_fileio_reset ();
2978 /* Clean up connection to a remote debugger. */
2981 remote_close (struct target_ops
*self
)
2983 struct remote_state
*rs
= get_remote_state ();
2985 if (rs
->remote_desc
== NULL
)
2986 return; /* already closed */
2988 /* Make sure we leave stdin registered in the event loop, and we
2989 don't leave the async SIGINT signal handler installed. */
2990 remote_terminal_ours (self
);
2992 serial_close (rs
->remote_desc
);
2993 rs
->remote_desc
= NULL
;
2995 /* We don't have a connection to the remote stub anymore. Get rid
2996 of all the inferiors and their threads we were controlling.
2997 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
2998 will be unable to find the thread corresponding to (pid, 0, 0). */
2999 inferior_ptid
= null_ptid
;
3000 discard_all_inferiors ();
3002 /* We are closing the remote target, so we should discard
3003 everything of this target. */
3004 discard_pending_stop_replies_in_queue (rs
);
3006 if (remote_async_inferior_event_token
)
3007 delete_async_event_handler (&remote_async_inferior_event_token
);
3009 remote_notif_state_xfree (rs
->notif_state
);
3011 trace_reset_local_state ();
3014 /* Query the remote side for the text, data and bss offsets. */
3019 struct remote_state
*rs
= get_remote_state ();
3022 int lose
, num_segments
= 0, do_sections
, do_segments
;
3023 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3024 struct section_offsets
*offs
;
3025 struct symfile_segment_data
*data
;
3027 if (symfile_objfile
== NULL
)
3030 putpkt ("qOffsets");
3031 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3034 if (buf
[0] == '\000')
3035 return; /* Return silently. Stub doesn't support
3039 warning (_("Remote failure reply: %s"), buf
);
3043 /* Pick up each field in turn. This used to be done with scanf, but
3044 scanf will make trouble if CORE_ADDR size doesn't match
3045 conversion directives correctly. The following code will work
3046 with any size of CORE_ADDR. */
3047 text_addr
= data_addr
= bss_addr
= 0;
3051 if (strncmp (ptr
, "Text=", 5) == 0)
3054 /* Don't use strtol, could lose on big values. */
3055 while (*ptr
&& *ptr
!= ';')
3056 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3058 if (strncmp (ptr
, ";Data=", 6) == 0)
3061 while (*ptr
&& *ptr
!= ';')
3062 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3067 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3070 while (*ptr
&& *ptr
!= ';')
3071 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3073 if (bss_addr
!= data_addr
)
3074 warning (_("Target reported unsupported offsets: %s"), buf
);
3079 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3082 /* Don't use strtol, could lose on big values. */
3083 while (*ptr
&& *ptr
!= ';')
3084 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3087 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3090 while (*ptr
&& *ptr
!= ';')
3091 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3099 error (_("Malformed response to offset query, %s"), buf
);
3100 else if (*ptr
!= '\0')
3101 warning (_("Target reported unsupported offsets: %s"), buf
);
3103 offs
= ((struct section_offsets
*)
3104 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3105 memcpy (offs
, symfile_objfile
->section_offsets
,
3106 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3108 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3109 do_segments
= (data
!= NULL
);
3110 do_sections
= num_segments
== 0;
3112 if (num_segments
> 0)
3114 segments
[0] = text_addr
;
3115 segments
[1] = data_addr
;
3117 /* If we have two segments, we can still try to relocate everything
3118 by assuming that the .text and .data offsets apply to the whole
3119 text and data segments. Convert the offsets given in the packet
3120 to base addresses for symfile_map_offsets_to_segments. */
3121 else if (data
&& data
->num_segments
== 2)
3123 segments
[0] = data
->segment_bases
[0] + text_addr
;
3124 segments
[1] = data
->segment_bases
[1] + data_addr
;
3127 /* If the object file has only one segment, assume that it is text
3128 rather than data; main programs with no writable data are rare,
3129 but programs with no code are useless. Of course the code might
3130 have ended up in the data segment... to detect that we would need
3131 the permissions here. */
3132 else if (data
&& data
->num_segments
== 1)
3134 segments
[0] = data
->segment_bases
[0] + text_addr
;
3137 /* There's no way to relocate by segment. */
3143 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3144 offs
, num_segments
, segments
);
3146 if (ret
== 0 && !do_sections
)
3147 error (_("Can not handle qOffsets TextSeg "
3148 "response with this symbol file"));
3155 free_symfile_segment_data (data
);
3159 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3161 /* This is a temporary kludge to force data and bss to use the
3162 same offsets because that's what nlmconv does now. The real
3163 solution requires changes to the stub and remote.c that I
3164 don't have time to do right now. */
3166 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3167 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3170 objfile_relocate (symfile_objfile
, offs
);
3173 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3174 threads we know are stopped already. This is used during the
3175 initial remote connection in non-stop mode --- threads that are
3176 reported as already being stopped are left stopped. */
3179 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3181 /* If we have a stop reply for this thread, it must be stopped. */
3182 if (peek_stop_reply (thread
->ptid
))
3183 set_stop_requested (thread
->ptid
, 1);
3188 /* Send interrupt_sequence to remote target. */
3190 send_interrupt_sequence (void)
3192 struct remote_state
*rs
= get_remote_state ();
3194 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3195 remote_serial_write ("\x03", 1);
3196 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3197 serial_send_break (rs
->remote_desc
);
3198 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3200 serial_send_break (rs
->remote_desc
);
3201 remote_serial_write ("g", 1);
3204 internal_error (__FILE__
, __LINE__
,
3205 _("Invalid value for interrupt_sequence_mode: %s."),
3206 interrupt_sequence_mode
);
3210 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3211 and extract the PTID. Returns NULL_PTID if not found. */
3214 stop_reply_extract_thread (char *stop_reply
)
3216 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3220 /* Txx r:val ; r:val (...) */
3223 /* Look for "register" named "thread". */
3228 p1
= strchr (p
, ':');
3232 if (strncmp (p
, "thread", p1
- p
) == 0)
3233 return read_ptid (++p1
, &p
);
3235 p1
= strchr (p
, ';');
3247 /* Determine the remote side's current thread. If we have a stop
3248 reply handy (in WAIT_STATUS), maybe it's a T stop reply with a
3249 "thread" register we can extract the current thread from. If not,
3250 ask the remote which is the current thread with qC. The former
3251 method avoids a roundtrip. */
3254 get_current_thread (char *wait_status
)
3258 /* Note we don't use remote_parse_stop_reply as that makes use of
3259 the target architecture, which we haven't yet fully determined at
3261 if (wait_status
!= NULL
)
3262 ptid
= stop_reply_extract_thread (wait_status
);
3263 if (ptid_equal (ptid
, null_ptid
))
3264 ptid
= remote_current_thread (inferior_ptid
);
3269 /* Query the remote target for which is the current thread/process,
3270 add it to our tables, and update INFERIOR_PTID. The caller is
3271 responsible for setting the state such that the remote end is ready
3272 to return the current thread.
3274 This function is called after handling the '?' or 'vRun' packets,
3275 whose response is a stop reply from which we can also try
3276 extracting the thread. If the target doesn't support the explicit
3277 qC query, we infer the current thread from that stop reply, passed
3278 in in WAIT_STATUS, which may be NULL. */
3281 add_current_inferior_and_thread (char *wait_status
)
3283 struct remote_state
*rs
= get_remote_state ();
3285 ptid_t ptid
= null_ptid
;
3287 inferior_ptid
= null_ptid
;
3289 /* Now, if we have thread information, update inferior_ptid. */
3290 ptid
= get_current_thread (wait_status
);
3292 if (!ptid_equal (ptid
, null_ptid
))
3294 if (!remote_multi_process_p (rs
))
3297 inferior_ptid
= ptid
;
3301 /* Without this, some commands which require an active target
3302 (such as kill) won't work. This variable serves (at least)
3303 double duty as both the pid of the target process (if it has
3304 such), and as a flag indicating that a target is active. */
3305 inferior_ptid
= magic_null_ptid
;
3309 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3311 /* Add the main thread. */
3312 add_thread_silent (inferior_ptid
);
3316 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3318 struct remote_state
*rs
= get_remote_state ();
3319 struct packet_config
*noack_config
;
3320 char *wait_status
= NULL
;
3322 immediate_quit
++; /* Allow user to interrupt it. */
3325 if (interrupt_on_connect
)
3326 send_interrupt_sequence ();
3328 /* Ack any packet which the remote side has already sent. */
3329 serial_write (rs
->remote_desc
, "+", 1);
3331 /* Signal other parts that we're going through the initial setup,
3332 and so things may not be stable yet. */
3333 rs
->starting_up
= 1;
3335 /* The first packet we send to the target is the optional "supported
3336 packets" request. If the target can answer this, it will tell us
3337 which later probes to skip. */
3338 remote_query_supported ();
3340 /* If the stub wants to get a QAllow, compose one and send it. */
3341 if (packet_support (PACKET_QAllow
) != PACKET_DISABLE
)
3342 remote_set_permissions (target
);
3344 /* Next, we possibly activate noack mode.
3346 If the QStartNoAckMode packet configuration is set to AUTO,
3347 enable noack mode if the stub reported a wish for it with
3350 If set to TRUE, then enable noack mode even if the stub didn't
3351 report it in qSupported. If the stub doesn't reply OK, the
3352 session ends with an error.
3354 If FALSE, then don't activate noack mode, regardless of what the
3355 stub claimed should be the default with qSupported. */
3357 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3358 if (packet_config_support (noack_config
) != PACKET_DISABLE
)
3360 putpkt ("QStartNoAckMode");
3361 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3362 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3368 /* Tell the remote that we are using the extended protocol. */
3370 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3373 /* Let the target know which signals it is allowed to pass down to
3375 update_signals_program_target ();
3377 /* Next, if the target can specify a description, read it. We do
3378 this before anything involving memory or registers. */
3379 target_find_description ();
3381 /* Next, now that we know something about the target, update the
3382 address spaces in the program spaces. */
3383 update_address_spaces ();
3385 /* On OSs where the list of libraries is global to all
3386 processes, we fetch them early. */
3387 if (gdbarch_has_global_solist (target_gdbarch ()))
3388 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3392 if (packet_support (PACKET_QNonStop
) != PACKET_ENABLE
)
3393 error (_("Non-stop mode requested, but remote "
3394 "does not support non-stop"));
3396 putpkt ("QNonStop:1");
3397 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3399 if (strcmp (rs
->buf
, "OK") != 0)
3400 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3402 /* Find about threads and processes the stub is already
3403 controlling. We default to adding them in the running state.
3404 The '?' query below will then tell us about which threads are
3406 remote_threads_info (target
);
3408 else if (packet_support (PACKET_QNonStop
) == PACKET_ENABLE
)
3410 /* Don't assume that the stub can operate in all-stop mode.
3411 Request it explicitly. */
3412 putpkt ("QNonStop:0");
3413 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3415 if (strcmp (rs
->buf
, "OK") != 0)
3416 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3419 /* Upload TSVs regardless of whether the target is running or not. The
3420 remote stub, such as GDBserver, may have some predefined or builtin
3421 TSVs, even if the target is not running. */
3422 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
3424 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3426 remote_upload_trace_state_variables (target
, &uploaded_tsvs
);
3427 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3430 /* Check whether the target is running now. */
3432 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3438 struct inferior
*inf
;
3440 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3443 error (_("The target is not running (try extended-remote?)"));
3445 /* We're connected, but not running. Drop out before we
3446 call start_remote. */
3447 rs
->starting_up
= 0;
3452 /* Save the reply for later. */
3453 wait_status
= alloca (strlen (rs
->buf
) + 1);
3454 strcpy (wait_status
, rs
->buf
);
3457 /* Fetch thread list. */
3458 target_find_new_threads ();
3460 /* Let the stub know that we want it to return the thread. */
3461 set_continue_thread (minus_one_ptid
);
3463 if (thread_count () == 0)
3465 /* Target has no concept of threads at all. GDB treats
3466 non-threaded target as single-threaded; add a main
3468 add_current_inferior_and_thread (wait_status
);
3472 /* We have thread information; select the thread the target
3473 says should be current. If we're reconnecting to a
3474 multi-threaded program, this will ideally be the thread
3475 that last reported an event before GDB disconnected. */
3476 inferior_ptid
= get_current_thread (wait_status
);
3477 if (ptid_equal (inferior_ptid
, null_ptid
))
3479 /* Odd... The target was able to list threads, but not
3480 tell us which thread was current (no "thread"
3481 register in T stop reply?). Just pick the first
3482 thread in the thread list then. */
3483 inferior_ptid
= thread_list
->ptid
;
3487 /* init_wait_for_inferior should be called before get_offsets in order
3488 to manage `inserted' flag in bp loc in a correct state.
3489 breakpoint_init_inferior, called from init_wait_for_inferior, set
3490 `inserted' flag to 0, while before breakpoint_re_set, called from
3491 start_remote, set `inserted' flag to 1. In the initialization of
3492 inferior, breakpoint_init_inferior should be called first, and then
3493 breakpoint_re_set can be called. If this order is broken, state of
3494 `inserted' flag is wrong, and cause some problems on breakpoint
3496 init_wait_for_inferior ();
3498 get_offsets (); /* Get text, data & bss offsets. */
3500 /* If we could not find a description using qXfer, and we know
3501 how to do it some other way, try again. This is not
3502 supported for non-stop; it could be, but it is tricky if
3503 there are no stopped threads when we connect. */
3504 if (remote_read_description_p (target
)
3505 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
3507 target_clear_description ();
3508 target_find_description ();
3511 /* Use the previously fetched status. */
3512 gdb_assert (wait_status
!= NULL
);
3513 strcpy (rs
->buf
, wait_status
);
3514 rs
->cached_wait_status
= 1;
3517 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3521 /* Clear WFI global state. Do this before finding about new
3522 threads and inferiors, and setting the current inferior.
3523 Otherwise we would clear the proceed status of the current
3524 inferior when we want its stop_soon state to be preserved
3525 (see notice_new_inferior). */
3526 init_wait_for_inferior ();
3528 /* In non-stop, we will either get an "OK", meaning that there
3529 are no stopped threads at this time; or, a regular stop
3530 reply. In the latter case, there may be more than one thread
3531 stopped --- we pull them all out using the vStopped
3533 if (strcmp (rs
->buf
, "OK") != 0)
3535 struct notif_client
*notif
= ¬if_client_stop
;
3537 /* remote_notif_get_pending_replies acks this one, and gets
3539 rs
->notif_state
->pending_event
[notif_client_stop
.id
]
3540 = remote_notif_parse (notif
, rs
->buf
);
3541 remote_notif_get_pending_events (notif
);
3543 /* Make sure that threads that were stopped remain
3545 iterate_over_threads (set_stop_requested_callback
, NULL
);
3548 if (target_can_async_p ())
3549 target_async (inferior_event_handler
, 0);
3551 if (thread_count () == 0)
3554 error (_("The target is not running (try extended-remote?)"));
3556 /* We're connected, but not running. Drop out before we
3557 call start_remote. */
3558 rs
->starting_up
= 0;
3562 /* Let the stub know that we want it to return the thread. */
3564 /* Force the stub to choose a thread. */
3565 set_general_thread (null_ptid
);
3568 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3569 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3570 error (_("remote didn't report the current thread in non-stop mode"));
3572 get_offsets (); /* Get text, data & bss offsets. */
3574 /* In non-stop mode, any cached wait status will be stored in
3575 the stop reply queue. */
3576 gdb_assert (wait_status
== NULL
);
3578 /* Report all signals during attach/startup. */
3579 remote_pass_signals (target
, 0, NULL
);
3582 /* If we connected to a live target, do some additional setup. */
3583 if (target_has_execution
)
3585 if (symfile_objfile
) /* No use without a symbol-file. */
3586 remote_check_symbols ();
3589 /* Possibly the target has been engaged in a trace run started
3590 previously; find out where things are at. */
3591 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
3593 struct uploaded_tp
*uploaded_tps
= NULL
;
3595 if (current_trace_status ()->running
)
3596 printf_filtered (_("Trace is already running on the target.\n"));
3598 remote_upload_tracepoints (target
, &uploaded_tps
);
3600 merge_uploaded_tracepoints (&uploaded_tps
);
3603 /* The thread and inferior lists are now synchronized with the
3604 target, our symbols have been relocated, and we're merged the
3605 target's tracepoints with ours. We're done with basic start
3607 rs
->starting_up
= 0;
3609 /* If breakpoints are global, insert them now. */
3610 if (gdbarch_has_global_breakpoints (target_gdbarch ())
3611 && breakpoints_always_inserted_mode ())
3612 insert_breakpoints ();
3615 /* Open a connection to a remote debugger.
3616 NAME is the filename used for communication. */
3619 remote_open (const char *name
, int from_tty
)
3621 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3624 /* Open a connection to a remote debugger using the extended
3625 remote gdb protocol. NAME is the filename used for communication. */
3628 extended_remote_open (const char *name
, int from_tty
)
3630 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3633 /* Reset all packets back to "unknown support". Called when opening a
3634 new connection to a remote target. */
3637 reset_all_packet_configs_support (void)
3641 for (i
= 0; i
< PACKET_MAX
; i
++)
3642 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
3645 /* Initialize all packet configs. */
3648 init_all_packet_configs (void)
3652 for (i
= 0; i
< PACKET_MAX
; i
++)
3654 remote_protocol_packets
[i
].detect
= AUTO_BOOLEAN_AUTO
;
3655 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
3659 /* Symbol look-up. */
3662 remote_check_symbols (void)
3664 struct remote_state
*rs
= get_remote_state ();
3665 char *msg
, *reply
, *tmp
;
3666 struct bound_minimal_symbol sym
;
3669 /* The remote side has no concept of inferiors that aren't running
3670 yet, it only knows about running processes. If we're connected
3671 but our current inferior is not running, we should not invite the
3672 remote target to request symbol lookups related to its
3673 (unrelated) current process. */
3674 if (!target_has_execution
)
3677 if (packet_support (PACKET_qSymbol
) == PACKET_DISABLE
)
3680 /* Make sure the remote is pointing at the right process. Note
3681 there's no way to select "no process". */
3682 set_general_process ();
3684 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3685 because we need both at the same time. */
3686 msg
= alloca (get_remote_packet_size ());
3688 /* Invite target to request symbol lookups. */
3690 putpkt ("qSymbol::");
3691 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3692 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3695 while (strncmp (reply
, "qSymbol:", 8) == 0)
3697 struct bound_minimal_symbol sym
;
3700 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3702 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3703 if (sym
.minsym
== NULL
)
3704 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3707 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
3708 CORE_ADDR sym_addr
= BMSYMBOL_VALUE_ADDRESS (sym
);
3710 /* If this is a function address, return the start of code
3711 instead of any data function descriptor. */
3712 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3716 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3717 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3721 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3726 static struct serial
*
3727 remote_serial_open (const char *name
)
3729 static int udp_warning
= 0;
3731 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3732 of in ser-tcp.c, because it is the remote protocol assuming that the
3733 serial connection is reliable and not the serial connection promising
3735 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3737 warning (_("The remote protocol may be unreliable over UDP.\n"
3738 "Some events may be lost, rendering further debugging "
3743 return serial_open (name
);
3746 /* Inform the target of our permission settings. The permission flags
3747 work without this, but if the target knows the settings, it can do
3748 a couple things. First, it can add its own check, to catch cases
3749 that somehow manage to get by the permissions checks in target
3750 methods. Second, if the target is wired to disallow particular
3751 settings (for instance, a system in the field that is not set up to
3752 be able to stop at a breakpoint), it can object to any unavailable
3756 remote_set_permissions (struct target_ops
*self
)
3758 struct remote_state
*rs
= get_remote_state ();
3760 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3761 "WriteReg:%x;WriteMem:%x;"
3762 "InsertBreak:%x;InsertTrace:%x;"
3763 "InsertFastTrace:%x;Stop:%x",
3764 may_write_registers
, may_write_memory
,
3765 may_insert_breakpoints
, may_insert_tracepoints
,
3766 may_insert_fast_tracepoints
, may_stop
);
3768 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3770 /* If the target didn't like the packet, warn the user. Do not try
3771 to undo the user's settings, that would just be maddening. */
3772 if (strcmp (rs
->buf
, "OK") != 0)
3773 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3776 /* This type describes each known response to the qSupported
3778 struct protocol_feature
3780 /* The name of this protocol feature. */
3783 /* The default for this protocol feature. */
3784 enum packet_support default_support
;
3786 /* The function to call when this feature is reported, or after
3787 qSupported processing if the feature is not supported.
3788 The first argument points to this structure. The second
3789 argument indicates whether the packet requested support be
3790 enabled, disabled, or probed (or the default, if this function
3791 is being called at the end of processing and this feature was
3792 not reported). The third argument may be NULL; if not NULL, it
3793 is a NUL-terminated string taken from the packet following
3794 this feature's name and an equals sign. */
3795 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3798 /* The corresponding packet for this feature. Only used if
3799 FUNC is remote_supported_packet. */
3804 remote_supported_packet (const struct protocol_feature
*feature
,
3805 enum packet_support support
,
3806 const char *argument
)
3810 warning (_("Remote qSupported response supplied an unexpected value for"
3811 " \"%s\"."), feature
->name
);
3815 remote_protocol_packets
[feature
->packet
].support
= support
;
3819 remote_packet_size (const struct protocol_feature
*feature
,
3820 enum packet_support support
, const char *value
)
3822 struct remote_state
*rs
= get_remote_state ();
3827 if (support
!= PACKET_ENABLE
)
3830 if (value
== NULL
|| *value
== '\0')
3832 warning (_("Remote target reported \"%s\" without a size."),
3838 packet_size
= strtol (value
, &value_end
, 16);
3839 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3841 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3842 feature
->name
, value
);
3846 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3848 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3849 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3850 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3853 /* Record the new maximum packet size. */
3854 rs
->explicit_packet_size
= packet_size
;
3857 static const struct protocol_feature remote_protocol_features
[] = {
3858 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3859 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3860 PACKET_qXfer_auxv
},
3861 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3862 PACKET_qXfer_features
},
3863 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3864 PACKET_qXfer_libraries
},
3865 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3866 PACKET_qXfer_libraries_svr4
},
3867 { "augmented-libraries-svr4-read", PACKET_DISABLE
,
3868 remote_supported_packet
, PACKET_augmented_libraries_svr4_read_feature
},
3869 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3870 PACKET_qXfer_memory_map
},
3871 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3872 PACKET_qXfer_spu_read
},
3873 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3874 PACKET_qXfer_spu_write
},
3875 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3876 PACKET_qXfer_osdata
},
3877 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3878 PACKET_qXfer_threads
},
3879 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
3880 PACKET_qXfer_traceframe_info
},
3881 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3882 PACKET_QPassSignals
},
3883 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
3884 PACKET_QProgramSignals
},
3885 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3886 PACKET_QStartNoAckMode
},
3887 { "multiprocess", PACKET_DISABLE
, remote_supported_packet
,
3888 PACKET_multiprocess_feature
},
3889 { "QNonStop", PACKET_DISABLE
, remote_supported_packet
, PACKET_QNonStop
},
3890 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
3891 PACKET_qXfer_siginfo_read
},
3892 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
3893 PACKET_qXfer_siginfo_write
},
3894 { "ConditionalTracepoints", PACKET_DISABLE
, remote_supported_packet
,
3895 PACKET_ConditionalTracepoints
},
3896 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_supported_packet
,
3897 PACKET_ConditionalBreakpoints
},
3898 { "BreakpointCommands", PACKET_DISABLE
, remote_supported_packet
,
3899 PACKET_BreakpointCommands
},
3900 { "FastTracepoints", PACKET_DISABLE
, remote_supported_packet
,
3901 PACKET_FastTracepoints
},
3902 { "StaticTracepoints", PACKET_DISABLE
, remote_supported_packet
,
3903 PACKET_StaticTracepoints
},
3904 {"InstallInTrace", PACKET_DISABLE
, remote_supported_packet
,
3905 PACKET_InstallInTrace
},
3906 { "DisconnectedTracing", PACKET_DISABLE
, remote_supported_packet
,
3907 PACKET_DisconnectedTracing_feature
},
3908 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
3910 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
3912 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
3913 PACKET_TracepointSource
},
3914 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
3916 { "EnableDisableTracepoints", PACKET_DISABLE
, remote_supported_packet
,
3917 PACKET_EnableDisableTracepoints_feature
},
3918 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
3919 PACKET_qXfer_fdpic
},
3920 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
3922 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
3923 PACKET_QDisableRandomization
},
3924 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
3925 { "QTBuffer:size", PACKET_DISABLE
,
3926 remote_supported_packet
, PACKET_QTBuffer_size
},
3927 { "tracenz", PACKET_DISABLE
, remote_supported_packet
, PACKET_tracenz_feature
},
3928 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
3929 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
3930 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
3931 PACKET_qXfer_btrace
}
3934 static char *remote_support_xml
;
3936 /* Register string appended to "xmlRegisters=" in qSupported query. */
3939 register_remote_support_xml (const char *xml
)
3941 #if defined(HAVE_LIBEXPAT)
3942 if (remote_support_xml
== NULL
)
3943 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
3946 char *copy
= xstrdup (remote_support_xml
+ 13);
3947 char *p
= strtok (copy
, ",");
3951 if (strcmp (p
, xml
) == 0)
3958 while ((p
= strtok (NULL
, ",")) != NULL
);
3961 remote_support_xml
= reconcat (remote_support_xml
,
3962 remote_support_xml
, ",", xml
,
3969 remote_query_supported_append (char *msg
, const char *append
)
3972 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
3974 return xstrdup (append
);
3978 remote_query_supported (void)
3980 struct remote_state
*rs
= get_remote_state ();
3983 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
3985 /* The packet support flags are handled differently for this packet
3986 than for most others. We treat an error, a disabled packet, and
3987 an empty response identically: any features which must be reported
3988 to be used will be automatically disabled. An empty buffer
3989 accomplishes this, since that is also the representation for a list
3990 containing no features. */
3993 if (packet_support (PACKET_qSupported
) != PACKET_DISABLE
)
3996 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
3998 q
= remote_query_supported_append (q
, "multiprocess+");
4000 if (remote_support_xml
)
4001 q
= remote_query_supported_append (q
, remote_support_xml
);
4003 q
= remote_query_supported_append (q
, "qRelocInsn+");
4005 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4008 do_cleanups (old_chain
);
4010 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4012 /* If an error occured, warn, but do not return - just reset the
4013 buffer to empty and go on to disable features. */
4014 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4017 warning (_("Remote failure reply: %s"), rs
->buf
);
4022 memset (seen
, 0, sizeof (seen
));
4027 enum packet_support is_supported
;
4028 char *p
, *end
, *name_end
, *value
;
4030 /* First separate out this item from the rest of the packet. If
4031 there's another item after this, we overwrite the separator
4032 (terminated strings are much easier to work with). */
4034 end
= strchr (p
, ';');
4037 end
= p
+ strlen (p
);
4047 warning (_("empty item in \"qSupported\" response"));
4052 name_end
= strchr (p
, '=');
4055 /* This is a name=value entry. */
4056 is_supported
= PACKET_ENABLE
;
4057 value
= name_end
+ 1;
4066 is_supported
= PACKET_ENABLE
;
4070 is_supported
= PACKET_DISABLE
;
4074 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4078 warning (_("unrecognized item \"%s\" "
4079 "in \"qSupported\" response"), p
);
4085 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4086 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4088 const struct protocol_feature
*feature
;
4091 feature
= &remote_protocol_features
[i
];
4092 feature
->func (feature
, is_supported
, value
);
4097 /* If we increased the packet size, make sure to increase the global
4098 buffer size also. We delay this until after parsing the entire
4099 qSupported packet, because this is the same buffer we were
4101 if (rs
->buf_size
< rs
->explicit_packet_size
)
4103 rs
->buf_size
= rs
->explicit_packet_size
;
4104 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4107 /* Handle the defaults for unmentioned features. */
4108 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4111 const struct protocol_feature
*feature
;
4113 feature
= &remote_protocol_features
[i
];
4114 feature
->func (feature
, feature
->default_support
, NULL
);
4118 /* Remove any of the remote.c targets from target stack. Upper targets depend
4119 on it so remove them first. */
4122 remote_unpush_target (void)
4124 pop_all_targets_above (process_stratum
- 1);
4128 remote_open_1 (const char *name
, int from_tty
,
4129 struct target_ops
*target
, int extended_p
)
4131 struct remote_state
*rs
= get_remote_state ();
4134 error (_("To open a remote debug connection, you need to specify what\n"
4135 "serial device is attached to the remote system\n"
4136 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4138 /* See FIXME above. */
4139 if (!target_async_permitted
)
4140 wait_forever_enabled_p
= 1;
4142 /* If we're connected to a running target, target_preopen will kill it.
4143 Ask this question first, before target_preopen has a chance to kill
4145 if (rs
->remote_desc
!= NULL
&& !have_inferiors ())
4148 && !query (_("Already connected to a remote target. Disconnect? ")))
4149 error (_("Still connected."));
4152 /* Here the possibly existing remote target gets unpushed. */
4153 target_preopen (from_tty
);
4155 /* Make sure we send the passed signals list the next time we resume. */
4156 xfree (rs
->last_pass_packet
);
4157 rs
->last_pass_packet
= NULL
;
4159 /* Make sure we send the program signals list the next time we
4161 xfree (rs
->last_program_signals_packet
);
4162 rs
->last_program_signals_packet
= NULL
;
4164 remote_fileio_reset ();
4165 reopen_exec_file ();
4168 rs
->remote_desc
= remote_serial_open (name
);
4169 if (!rs
->remote_desc
)
4170 perror_with_name (name
);
4172 if (baud_rate
!= -1)
4174 if (serial_setbaudrate (rs
->remote_desc
, baud_rate
))
4176 /* The requested speed could not be set. Error out to
4177 top level after closing remote_desc. Take care to
4178 set remote_desc to NULL to avoid closing remote_desc
4180 serial_close (rs
->remote_desc
);
4181 rs
->remote_desc
= NULL
;
4182 perror_with_name (name
);
4186 serial_raw (rs
->remote_desc
);
4188 /* If there is something sitting in the buffer we might take it as a
4189 response to a command, which would be bad. */
4190 serial_flush_input (rs
->remote_desc
);
4194 puts_filtered ("Remote debugging using ");
4195 puts_filtered (name
);
4196 puts_filtered ("\n");
4198 push_target (target
); /* Switch to using remote target now. */
4200 /* Register extra event sources in the event loop. */
4201 remote_async_inferior_event_token
4202 = create_async_event_handler (remote_async_inferior_event_handler
,
4204 rs
->notif_state
= remote_notif_state_allocate ();
4206 /* Reset the target state; these things will be queried either by
4207 remote_query_supported or as they are needed. */
4208 reset_all_packet_configs_support ();
4209 rs
->cached_wait_status
= 0;
4210 rs
->explicit_packet_size
= 0;
4212 rs
->extended
= extended_p
;
4213 rs
->waiting_for_stop_reply
= 0;
4214 rs
->ctrlc_pending_p
= 0;
4216 rs
->general_thread
= not_sent_ptid
;
4217 rs
->continue_thread
= not_sent_ptid
;
4218 rs
->remote_traceframe_number
= -1;
4220 /* Probe for ability to use "ThreadInfo" query, as required. */
4221 rs
->use_threadinfo_query
= 1;
4222 rs
->use_threadextra_query
= 1;
4224 if (target_async_permitted
)
4226 /* With this target we start out by owning the terminal. */
4227 remote_async_terminal_ours_p
= 1;
4229 /* FIXME: cagney/1999-09-23: During the initial connection it is
4230 assumed that the target is already ready and able to respond to
4231 requests. Unfortunately remote_start_remote() eventually calls
4232 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4233 around this. Eventually a mechanism that allows
4234 wait_for_inferior() to expect/get timeouts will be
4236 wait_forever_enabled_p
= 0;
4239 /* First delete any symbols previously loaded from shared libraries. */
4240 no_shared_libraries (NULL
, 0);
4243 init_thread_list ();
4245 /* Start the remote connection. If error() or QUIT, discard this
4246 target (we'd otherwise be in an inconsistent state) and then
4247 propogate the error on up the exception chain. This ensures that
4248 the caller doesn't stumble along blindly assuming that the
4249 function succeeded. The CLI doesn't have this problem but other
4250 UI's, such as MI do.
4252 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4253 this function should return an error indication letting the
4254 caller restore the previous state. Unfortunately the command
4255 ``target remote'' is directly wired to this function making that
4256 impossible. On a positive note, the CLI side of this problem has
4257 been fixed - the function set_cmd_context() makes it possible for
4258 all the ``target ....'' commands to share a common callback
4259 function. See cli-dump.c. */
4261 volatile struct gdb_exception ex
;
4263 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4265 remote_start_remote (from_tty
, target
, extended_p
);
4269 /* Pop the partially set up target - unless something else did
4270 already before throwing the exception. */
4271 if (rs
->remote_desc
!= NULL
)
4272 remote_unpush_target ();
4273 if (target_async_permitted
)
4274 wait_forever_enabled_p
= 1;
4275 throw_exception (ex
);
4279 if (target_async_permitted
)
4280 wait_forever_enabled_p
= 1;
4283 /* This takes a program previously attached to and detaches it. After
4284 this is done, GDB can be used to debug some other program. We
4285 better not have left any breakpoints in the target program or it'll
4286 die when it hits one. */
4289 remote_detach_1 (const char *args
, int from_tty
, int extended
)
4291 int pid
= ptid_get_pid (inferior_ptid
);
4292 struct remote_state
*rs
= get_remote_state ();
4295 error (_("Argument given to \"detach\" when remotely debugging."));
4297 if (!target_has_execution
)
4298 error (_("No process to detach from."));
4302 char *exec_file
= get_exec_file (0);
4303 if (exec_file
== NULL
)
4305 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4306 target_pid_to_str (pid_to_ptid (pid
)));
4307 gdb_flush (gdb_stdout
);
4310 /* Tell the remote target to detach. */
4311 if (remote_multi_process_p (rs
))
4312 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4314 strcpy (rs
->buf
, "D");
4317 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4319 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4321 else if (rs
->buf
[0] == '\0')
4322 error (_("Remote doesn't know how to detach"));
4324 error (_("Can't detach process."));
4326 if (from_tty
&& !extended
)
4327 puts_filtered (_("Ending remote debugging.\n"));
4329 target_mourn_inferior ();
4333 remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
4335 remote_detach_1 (args
, from_tty
, 0);
4339 extended_remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
4341 remote_detach_1 (args
, from_tty
, 1);
4344 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4347 remote_disconnect (struct target_ops
*target
, const char *args
, int from_tty
)
4350 error (_("Argument given to \"disconnect\" when remotely debugging."));
4352 /* Make sure we unpush even the extended remote targets; mourn
4353 won't do it. So call remote_mourn_1 directly instead of
4354 target_mourn_inferior. */
4355 remote_mourn_1 (target
);
4358 puts_filtered ("Ending remote debugging.\n");
4361 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4362 be chatty about it. */
4365 extended_remote_attach_1 (struct target_ops
*target
, const char *args
,
4368 struct remote_state
*rs
= get_remote_state ();
4370 char *wait_status
= NULL
;
4372 pid
= parse_pid_to_attach (args
);
4374 /* Remote PID can be freely equal to getpid, do not check it here the same
4375 way as in other targets. */
4377 if (packet_support (PACKET_vAttach
) == PACKET_DISABLE
)
4378 error (_("This target does not support attaching to a process"));
4382 char *exec_file
= get_exec_file (0);
4385 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4386 target_pid_to_str (pid_to_ptid (pid
)));
4388 printf_unfiltered (_("Attaching to %s\n"),
4389 target_pid_to_str (pid_to_ptid (pid
)));
4391 gdb_flush (gdb_stdout
);
4394 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4396 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4398 switch (packet_ok (rs
->buf
,
4399 &remote_protocol_packets
[PACKET_vAttach
]))
4404 /* Save the reply for later. */
4405 wait_status
= alloca (strlen (rs
->buf
) + 1);
4406 strcpy (wait_status
, rs
->buf
);
4408 else if (strcmp (rs
->buf
, "OK") != 0)
4409 error (_("Attaching to %s failed with: %s"),
4410 target_pid_to_str (pid_to_ptid (pid
)),
4413 case PACKET_UNKNOWN
:
4414 error (_("This target does not support attaching to a process"));
4416 error (_("Attaching to %s failed"),
4417 target_pid_to_str (pid_to_ptid (pid
)));
4420 set_current_inferior (remote_add_inferior (0, pid
, 1));
4422 inferior_ptid
= pid_to_ptid (pid
);
4426 struct thread_info
*thread
;
4428 /* Get list of threads. */
4429 remote_threads_info (target
);
4431 thread
= first_thread_of_process (pid
);
4433 inferior_ptid
= thread
->ptid
;
4435 inferior_ptid
= pid_to_ptid (pid
);
4437 /* Invalidate our notion of the remote current thread. */
4438 record_currthread (rs
, minus_one_ptid
);
4442 /* Now, if we have thread information, update inferior_ptid. */
4443 inferior_ptid
= remote_current_thread (inferior_ptid
);
4445 /* Add the main thread to the thread list. */
4446 add_thread_silent (inferior_ptid
);
4449 /* Next, if the target can specify a description, read it. We do
4450 this before anything involving memory or registers. */
4451 target_find_description ();
4455 /* Use the previously fetched status. */
4456 gdb_assert (wait_status
!= NULL
);
4458 if (target_can_async_p ())
4460 struct notif_event
*reply
4461 = remote_notif_parse (¬if_client_stop
, wait_status
);
4463 push_stop_reply ((struct stop_reply
*) reply
);
4465 target_async (inferior_event_handler
, 0);
4469 gdb_assert (wait_status
!= NULL
);
4470 strcpy (rs
->buf
, wait_status
);
4471 rs
->cached_wait_status
= 1;
4475 gdb_assert (wait_status
== NULL
);
4479 extended_remote_attach (struct target_ops
*ops
, const char *args
, int from_tty
)
4481 extended_remote_attach_1 (ops
, args
, from_tty
);
4484 /* Implementation of the to_post_attach method. */
4487 extended_remote_post_attach (struct target_ops
*ops
, int pid
)
4489 /* In certain cases GDB might not have had the chance to start
4490 symbol lookup up until now. This could happen if the debugged
4491 binary is not using shared libraries, the vsyscall page is not
4492 present (on Linux) and the binary itself hadn't changed since the
4493 debugging process was started. */
4494 if (symfile_objfile
!= NULL
)
4495 remote_check_symbols();
4499 /* Check for the availability of vCont. This function should also check
4503 remote_vcont_probe (struct remote_state
*rs
)
4507 strcpy (rs
->buf
, "vCont?");
4509 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4512 /* Make sure that the features we assume are supported. */
4513 if (strncmp (buf
, "vCont", 5) == 0)
4516 int support_s
, support_S
, support_c
, support_C
;
4522 rs
->supports_vCont
.t
= 0;
4523 rs
->supports_vCont
.r
= 0;
4524 while (p
&& *p
== ';')
4527 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4529 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4531 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4533 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4535 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4536 rs
->supports_vCont
.t
= 1;
4537 else if (*p
== 'r' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4538 rs
->supports_vCont
.r
= 1;
4540 p
= strchr (p
, ';');
4543 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4544 BUF will make packet_ok disable the packet. */
4545 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4549 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4552 /* Helper function for building "vCont" resumptions. Write a
4553 resumption to P. ENDP points to one-passed-the-end of the buffer
4554 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4555 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4556 resumed thread should be single-stepped and/or signalled. If PTID
4557 equals minus_one_ptid, then all threads are resumed; if PTID
4558 represents a process, then all threads of the process are resumed;
4559 the thread to be stepped and/or signalled is given in the global
4563 append_resumption (char *p
, char *endp
,
4564 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4566 struct remote_state
*rs
= get_remote_state ();
4568 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4569 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4571 /* GDB is willing to range step. */
4572 && use_range_stepping
4573 /* Target supports range stepping. */
4574 && rs
->supports_vCont
.r
4575 /* We don't currently support range stepping multiple
4576 threads with a wildcard (though the protocol allows it,
4577 so stubs shouldn't make an active effort to forbid
4579 && !(remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4581 struct thread_info
*tp
;
4583 if (ptid_equal (ptid
, minus_one_ptid
))
4585 /* If we don't know about the target thread's tid, then
4586 we're resuming magic_null_ptid (see caller). */
4587 tp
= find_thread_ptid (magic_null_ptid
);
4590 tp
= find_thread_ptid (ptid
);
4591 gdb_assert (tp
!= NULL
);
4593 if (tp
->control
.may_range_step
)
4595 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
4597 p
+= xsnprintf (p
, endp
- p
, ";r%s,%s",
4598 phex_nz (tp
->control
.step_range_start
,
4600 phex_nz (tp
->control
.step_range_end
,
4604 p
+= xsnprintf (p
, endp
- p
, ";s");
4607 p
+= xsnprintf (p
, endp
- p
, ";s");
4608 else if (siggnal
!= GDB_SIGNAL_0
)
4609 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4611 p
+= xsnprintf (p
, endp
- p
, ";c");
4613 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4617 /* All (-1) threads of process. */
4618 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
4620 p
+= xsnprintf (p
, endp
- p
, ":");
4621 p
= write_ptid (p
, endp
, nptid
);
4623 else if (!ptid_equal (ptid
, minus_one_ptid
))
4625 p
+= xsnprintf (p
, endp
- p
, ":");
4626 p
= write_ptid (p
, endp
, ptid
);
4632 /* Append a vCont continue-with-signal action for threads that have a
4633 non-zero stop signal. */
4636 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4638 struct thread_info
*thread
;
4640 ALL_NON_EXITED_THREADS (thread
)
4641 if (ptid_match (thread
->ptid
, ptid
)
4642 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4643 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
4645 p
= append_resumption (p
, endp
, thread
->ptid
,
4646 0, thread
->suspend
.stop_signal
);
4647 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4653 /* Resume the remote inferior by using a "vCont" packet. The thread
4654 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4655 resumed thread should be single-stepped and/or signalled. If PTID
4656 equals minus_one_ptid, then all threads are resumed; the thread to
4657 be stepped and/or signalled is given in the global INFERIOR_PTID.
4658 This function returns non-zero iff it resumes the inferior.
4660 This function issues a strict subset of all possible vCont commands at the
4664 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4666 struct remote_state
*rs
= get_remote_state ();
4670 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
4671 remote_vcont_probe (rs
);
4673 if (packet_support (PACKET_vCont
) == PACKET_DISABLE
)
4677 endp
= rs
->buf
+ get_remote_packet_size ();
4679 /* If we could generate a wider range of packets, we'd have to worry
4680 about overflowing BUF. Should there be a generic
4681 "multi-part-packet" packet? */
4683 p
+= xsnprintf (p
, endp
- p
, "vCont");
4685 if (ptid_equal (ptid
, magic_null_ptid
))
4687 /* MAGIC_NULL_PTID means that we don't have any active threads,
4688 so we don't have any TID numbers the inferior will
4689 understand. Make sure to only send forms that do not specify
4691 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4693 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4695 /* Resume all threads (of all processes, or of a single
4696 process), with preference for INFERIOR_PTID. This assumes
4697 inferior_ptid belongs to the set of all threads we are about
4699 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4701 /* Step inferior_ptid, with or without signal. */
4702 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4705 /* Also pass down any pending signaled resumption for other
4706 threads not the current. */
4707 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4709 /* And continue others without a signal. */
4710 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4714 /* Scheduler locking; resume only PTID. */
4715 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4718 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4723 /* In non-stop, the stub replies to vCont with "OK". The stop
4724 reply will be reported asynchronously by means of a `%Stop'
4726 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4727 if (strcmp (rs
->buf
, "OK") != 0)
4728 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4734 /* Tell the remote machine to resume. */
4737 remote_resume (struct target_ops
*ops
,
4738 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4740 struct remote_state
*rs
= get_remote_state ();
4743 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
4744 (explained in remote-notif.c:handle_notification) so
4745 remote_notif_process is not called. We need find a place where
4746 it is safe to start a 'vNotif' sequence. It is good to do it
4747 before resuming inferior, because inferior was stopped and no RSP
4748 traffic at that moment. */
4750 remote_notif_process (rs
->notif_state
, ¬if_client_stop
);
4752 rs
->last_sent_signal
= siggnal
;
4753 rs
->last_sent_step
= step
;
4755 /* The vCont packet doesn't need to specify threads via Hc. */
4756 /* No reverse support (yet) for vCont. */
4757 if (execution_direction
!= EXEC_REVERSE
)
4758 if (remote_vcont_resume (ptid
, step
, siggnal
))
4761 /* All other supported resume packets do use Hc, so set the continue
4763 if (ptid_equal (ptid
, minus_one_ptid
))
4764 set_continue_thread (any_thread_ptid
);
4766 set_continue_thread (ptid
);
4769 if (execution_direction
== EXEC_REVERSE
)
4771 /* We don't pass signals to the target in reverse exec mode. */
4772 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4773 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4776 if (step
&& packet_support (PACKET_bs
) == PACKET_DISABLE
)
4777 error (_("Remote reverse-step not supported."));
4778 if (!step
&& packet_support (PACKET_bc
) == PACKET_DISABLE
)
4779 error (_("Remote reverse-continue not supported."));
4781 strcpy (buf
, step
? "bs" : "bc");
4783 else if (siggnal
!= GDB_SIGNAL_0
)
4785 buf
[0] = step
? 'S' : 'C';
4786 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4787 buf
[2] = tohex (((int) siggnal
) & 0xf);
4791 strcpy (buf
, step
? "s" : "c");
4796 /* We are about to start executing the inferior, let's register it
4797 with the event loop. NOTE: this is the one place where all the
4798 execution commands end up. We could alternatively do this in each
4799 of the execution commands in infcmd.c. */
4800 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4801 into infcmd.c in order to allow inferior function calls to work
4802 NOT asynchronously. */
4803 if (target_can_async_p ())
4804 target_async (inferior_event_handler
, 0);
4806 /* We've just told the target to resume. The remote server will
4807 wait for the inferior to stop, and then send a stop reply. In
4808 the mean time, we can't start another command/query ourselves
4809 because the stub wouldn't be ready to process it. This applies
4810 only to the base all-stop protocol, however. In non-stop (which
4811 only supports vCont), the stub replies with an "OK", and is
4812 immediate able to process further serial input. */
4814 rs
->waiting_for_stop_reply
= 1;
4818 /* Set up the signal handler for SIGINT, while the target is
4819 executing, ovewriting the 'regular' SIGINT signal handler. */
4821 async_initialize_sigint_signal_handler (void)
4823 signal (SIGINT
, async_handle_remote_sigint
);
4826 /* Signal handler for SIGINT, while the target is executing. */
4828 async_handle_remote_sigint (int sig
)
4830 signal (sig
, async_handle_remote_sigint_twice
);
4831 /* Note we need to go through gdb_call_async_signal_handler in order
4832 to wake up the event loop on Windows. */
4833 gdb_call_async_signal_handler (async_sigint_remote_token
, 0);
4836 /* Signal handler for SIGINT, installed after SIGINT has already been
4837 sent once. It will take effect the second time that the user sends
4840 async_handle_remote_sigint_twice (int sig
)
4842 signal (sig
, async_handle_remote_sigint
);
4843 /* See note in async_handle_remote_sigint. */
4844 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 0);
4847 /* Perform the real interruption of the target execution, in response
4850 async_remote_interrupt (gdb_client_data arg
)
4853 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
4855 target_stop (inferior_ptid
);
4858 /* Perform interrupt, if the first attempt did not succeed. Just give
4859 up on the target alltogether. */
4861 async_remote_interrupt_twice (gdb_client_data arg
)
4864 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
4869 /* Reinstall the usual SIGINT handlers, after the target has
4872 async_cleanup_sigint_signal_handler (void *dummy
)
4874 signal (SIGINT
, handle_sigint
);
4877 /* Send ^C to target to halt it. Target will respond, and send us a
4879 static void (*ofunc
) (int);
4881 /* The command line interface's stop routine. This function is installed
4882 as a signal handler for SIGINT. The first time a user requests a
4883 stop, we call remote_stop to send a break or ^C. If there is no
4884 response from the target (it didn't stop when the user requested it),
4885 we ask the user if he'd like to detach from the target. */
4887 sync_remote_interrupt (int signo
)
4889 /* If this doesn't work, try more severe steps. */
4890 signal (signo
, sync_remote_interrupt_twice
);
4892 gdb_call_async_signal_handler (async_sigint_remote_token
, 1);
4895 /* The user typed ^C twice. */
4898 sync_remote_interrupt_twice (int signo
)
4900 signal (signo
, ofunc
);
4901 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 1);
4902 signal (signo
, sync_remote_interrupt
);
4905 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4906 thread, all threads of a remote process, or all threads of all
4910 remote_stop_ns (ptid_t ptid
)
4912 struct remote_state
*rs
= get_remote_state ();
4914 char *endp
= rs
->buf
+ get_remote_packet_size ();
4916 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
4917 remote_vcont_probe (rs
);
4919 if (!rs
->supports_vCont
.t
)
4920 error (_("Remote server does not support stopping threads"));
4922 if (ptid_equal (ptid
, minus_one_ptid
)
4923 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4924 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
4929 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
4931 if (ptid_is_pid (ptid
))
4932 /* All (-1) threads of process. */
4933 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
4936 /* Small optimization: if we already have a stop reply for
4937 this thread, no use in telling the stub we want this
4939 if (peek_stop_reply (ptid
))
4945 write_ptid (p
, endp
, nptid
);
4948 /* In non-stop, we get an immediate OK reply. The stop reply will
4949 come in asynchronously by notification. */
4951 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4952 if (strcmp (rs
->buf
, "OK") != 0)
4953 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
4956 /* All-stop version of target_stop. Sends a break or a ^C to stop the
4957 remote target. It is undefined which thread of which process
4958 reports the stop. */
4961 remote_stop_as (ptid_t ptid
)
4963 struct remote_state
*rs
= get_remote_state ();
4965 rs
->ctrlc_pending_p
= 1;
4967 /* If the inferior is stopped already, but the core didn't know
4968 about it yet, just ignore the request. The cached wait status
4969 will be collected in remote_wait. */
4970 if (rs
->cached_wait_status
)
4973 /* Send interrupt_sequence to remote target. */
4974 send_interrupt_sequence ();
4977 /* This is the generic stop called via the target vector. When a target
4978 interrupt is requested, either by the command line or the GUI, we
4979 will eventually end up here. */
4982 remote_stop (struct target_ops
*self
, ptid_t ptid
)
4985 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
4988 remote_stop_ns (ptid
);
4990 remote_stop_as (ptid
);
4993 /* Ask the user what to do when an interrupt is received. */
4996 interrupt_query (void)
4998 target_terminal_ours ();
5000 if (target_can_async_p ())
5002 signal (SIGINT
, handle_sigint
);
5007 if (query (_("Interrupted while waiting for the program.\n\
5008 Give up (and stop debugging it)? ")))
5010 remote_unpush_target ();
5015 target_terminal_inferior ();
5018 /* Enable/disable target terminal ownership. Most targets can use
5019 terminal groups to control terminal ownership. Remote targets are
5020 different in that explicit transfer of ownership to/from GDB/target
5024 remote_terminal_inferior (struct target_ops
*self
)
5026 if (!target_async_permitted
)
5027 /* Nothing to do. */
5030 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5031 idempotent. The event-loop GDB talking to an asynchronous target
5032 with a synchronous command calls this function from both
5033 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5034 transfer the terminal to the target when it shouldn't this guard
5036 if (!remote_async_terminal_ours_p
)
5038 delete_file_handler (input_fd
);
5039 remote_async_terminal_ours_p
= 0;
5040 async_initialize_sigint_signal_handler ();
5041 /* NOTE: At this point we could also register our selves as the
5042 recipient of all input. Any characters typed could then be
5043 passed on down to the target. */
5047 remote_terminal_ours (struct target_ops
*self
)
5049 if (!target_async_permitted
)
5050 /* Nothing to do. */
5053 /* See FIXME in remote_terminal_inferior. */
5054 if (remote_async_terminal_ours_p
)
5056 async_cleanup_sigint_signal_handler (NULL
);
5057 add_file_handler (input_fd
, stdin_event_handler
, 0);
5058 remote_async_terminal_ours_p
= 1;
5062 remote_console_output (char *msg
)
5066 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5069 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5073 fputs_unfiltered (tb
, gdb_stdtarg
);
5075 gdb_flush (gdb_stdtarg
);
5078 typedef struct cached_reg
5081 gdb_byte data
[MAX_REGISTER_SIZE
];
5084 DEF_VEC_O(cached_reg_t
);
5086 typedef struct stop_reply
5088 struct notif_event base
;
5090 /* The identifier of the thread about this event */
5093 /* The remote state this event is associated with. When the remote
5094 connection, represented by a remote_state object, is closed,
5095 all the associated stop_reply events should be released. */
5096 struct remote_state
*rs
;
5098 struct target_waitstatus ws
;
5100 /* Expedited registers. This makes remote debugging a bit more
5101 efficient for those targets that provide critical registers as
5102 part of their normal status mechanism (as another roundtrip to
5103 fetch them is avoided). */
5104 VEC(cached_reg_t
) *regcache
;
5106 int stopped_by_watchpoint_p
;
5107 CORE_ADDR watch_data_address
;
5112 DECLARE_QUEUE_P (stop_reply_p
);
5113 DEFINE_QUEUE_P (stop_reply_p
);
5114 /* The list of already fetched and acknowledged stop events. This
5115 queue is used for notification Stop, and other notifications
5116 don't need queue for their events, because the notification events
5117 of Stop can't be consumed immediately, so that events should be
5118 queued first, and be consumed by remote_wait_{ns,as} one per
5119 time. Other notifications can consume their events immediately,
5120 so queue is not needed for them. */
5121 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5124 stop_reply_xfree (struct stop_reply
*r
)
5126 notif_event_xfree ((struct notif_event
*) r
);
5130 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
5131 struct notif_event
*event
)
5133 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
5137 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
5138 struct notif_event
*event
)
5140 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
5143 putpkt ((char *) self
->ack_command
);
5145 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
5146 /* We got an unknown stop reply. */
5147 error (_("Unknown stop reply"));
5149 push_stop_reply (stop_reply
);
5153 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
5155 /* We can't get pending events in remote_notif_process for
5156 notification stop, and we have to do this in remote_wait_ns
5157 instead. If we fetch all queued events from stub, remote stub
5158 may exit and we have no chance to process them back in
5160 mark_async_event_handler (remote_async_inferior_event_token
);
5165 stop_reply_dtr (struct notif_event
*event
)
5167 struct stop_reply
*r
= (struct stop_reply
*) event
;
5169 VEC_free (cached_reg_t
, r
->regcache
);
5172 static struct notif_event
*
5173 remote_notif_stop_alloc_reply (void)
5175 struct notif_event
*r
5176 = (struct notif_event
*) XNEW (struct stop_reply
);
5178 r
->dtr
= stop_reply_dtr
;
5183 /* A client of notification Stop. */
5185 struct notif_client notif_client_stop
=
5189 remote_notif_stop_parse
,
5190 remote_notif_stop_ack
,
5191 remote_notif_stop_can_get_pending_events
,
5192 remote_notif_stop_alloc_reply
,
5196 /* A parameter to pass data in and out. */
5198 struct queue_iter_param
5201 struct stop_reply
*output
;
5204 /* Remove stop replies in the queue if its pid is equal to the given
5208 remove_stop_reply_for_inferior (QUEUE (stop_reply_p
) *q
,
5209 QUEUE_ITER (stop_reply_p
) *iter
,
5213 struct queue_iter_param
*param
= data
;
5214 struct inferior
*inf
= param
->input
;
5216 if (ptid_get_pid (event
->ptid
) == inf
->pid
)
5218 stop_reply_xfree (event
);
5219 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5225 /* Discard all pending stop replies of inferior INF. */
5228 discard_pending_stop_replies (struct inferior
*inf
)
5231 struct queue_iter_param param
;
5232 struct stop_reply
*reply
;
5233 struct remote_state
*rs
= get_remote_state ();
5234 struct remote_notif_state
*rns
= rs
->notif_state
;
5236 /* This function can be notified when an inferior exists. When the
5237 target is not remote, the notification state is NULL. */
5238 if (rs
->remote_desc
== NULL
)
5241 reply
= (struct stop_reply
*) rns
->pending_event
[notif_client_stop
.id
];
5243 /* Discard the in-flight notification. */
5244 if (reply
!= NULL
&& ptid_get_pid (reply
->ptid
) == inf
->pid
)
5246 stop_reply_xfree (reply
);
5247 rns
->pending_event
[notif_client_stop
.id
] = NULL
;
5251 param
.output
= NULL
;
5252 /* Discard the stop replies we have already pulled with
5254 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5255 remove_stop_reply_for_inferior
, ¶m
);
5258 /* If its remote state is equal to the given remote state,
5259 remove EVENT from the stop reply queue. */
5262 remove_stop_reply_of_remote_state (QUEUE (stop_reply_p
) *q
,
5263 QUEUE_ITER (stop_reply_p
) *iter
,
5267 struct queue_iter_param
*param
= data
;
5268 struct remote_state
*rs
= param
->input
;
5270 if (event
->rs
== rs
)
5272 stop_reply_xfree (event
);
5273 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5279 /* Discard the stop replies for RS in stop_reply_queue. */
5282 discard_pending_stop_replies_in_queue (struct remote_state
*rs
)
5284 struct queue_iter_param param
;
5287 param
.output
= NULL
;
5288 /* Discard the stop replies we have already pulled with
5290 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5291 remove_stop_reply_of_remote_state
, ¶m
);
5294 /* A parameter to pass data in and out. */
5297 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
5298 QUEUE_ITER (stop_reply_p
) *iter
,
5302 struct queue_iter_param
*param
= data
;
5303 ptid_t
*ptid
= param
->input
;
5305 if (ptid_match (event
->ptid
, *ptid
))
5307 param
->output
= event
;
5308 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5315 /* Remove the first reply in 'stop_reply_queue' which matches
5318 static struct stop_reply
*
5319 remote_notif_remove_queued_reply (ptid_t ptid
)
5321 struct queue_iter_param param
;
5323 param
.input
= &ptid
;
5324 param
.output
= NULL
;
5326 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5327 remote_notif_remove_once_on_match
, ¶m
);
5329 fprintf_unfiltered (gdb_stdlog
,
5330 "notif: discard queued event: 'Stop' in %s\n",
5331 target_pid_to_str (ptid
));
5333 return param
.output
;
5336 /* Look for a queued stop reply belonging to PTID. If one is found,
5337 remove it from the queue, and return it. Returns NULL if none is
5338 found. If there are still queued events left to process, tell the
5339 event loop to get back to target_wait soon. */
5341 static struct stop_reply
*
5342 queued_stop_reply (ptid_t ptid
)
5344 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
5346 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5347 /* There's still at least an event left. */
5348 mark_async_event_handler (remote_async_inferior_event_token
);
5353 /* Push a fully parsed stop reply in the stop reply queue. Since we
5354 know that we now have at least one queued event left to pass to the
5355 core side, tell the event loop to get back to target_wait soon. */
5358 push_stop_reply (struct stop_reply
*new_event
)
5360 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
5363 fprintf_unfiltered (gdb_stdlog
,
5364 "notif: push 'Stop' %s to queue %d\n",
5365 target_pid_to_str (new_event
->ptid
),
5366 QUEUE_length (stop_reply_p
,
5369 mark_async_event_handler (remote_async_inferior_event_token
);
5373 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
5374 QUEUE_ITER (stop_reply_p
) *iter
,
5375 struct stop_reply
*event
,
5378 ptid_t
*ptid
= data
;
5380 return !(ptid_equal (*ptid
, event
->ptid
)
5381 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
5384 /* Returns true if we have a stop reply for PTID. */
5387 peek_stop_reply (ptid_t ptid
)
5389 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5390 stop_reply_match_ptid_and_ws
, &ptid
);
5393 /* Parse the stop reply in BUF. Either the function succeeds, and the
5394 result is stored in EVENT, or throws an error. */
5397 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5399 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5403 event
->ptid
= null_ptid
;
5404 event
->rs
= get_remote_state ();
5405 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5406 event
->ws
.value
.integer
= 0;
5407 event
->stopped_by_watchpoint_p
= 0;
5408 event
->regcache
= NULL
;
5413 case 'T': /* Status with PC, SP, FP, ... */
5414 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5415 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5417 n... = register number
5418 r... = register contents
5421 p
= &buf
[3]; /* after Txx */
5429 /* If the packet contains a register number, save it in
5430 pnum and set p1 to point to the character following it.
5431 Otherwise p1 points to p. */
5433 /* If this packet is an awatch packet, don't parse the 'a'
5434 as a register number. */
5436 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5437 && strncmp (p
, "core", strlen ("core") != 0))
5439 /* Read the ``P'' register number. */
5440 pnum
= strtol (p
, &p_temp
, 16);
5446 if (p1
== p
) /* No register number present here. */
5448 p1
= strchr (p
, ':');
5450 error (_("Malformed packet(a) (missing colon): %s\n\
5453 if (strncmp (p
, "thread", p1
- p
) == 0)
5454 event
->ptid
= read_ptid (++p1
, &p
);
5455 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5456 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5457 || (strncmp (p
, "awatch", p1
- p
) == 0))
5459 event
->stopped_by_watchpoint_p
= 1;
5460 p
= unpack_varlen_hex (++p1
, &addr
);
5461 event
->watch_data_address
= (CORE_ADDR
) addr
;
5463 else if (strncmp (p
, "library", p1
- p
) == 0)
5467 while (*p_temp
&& *p_temp
!= ';')
5470 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5473 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5475 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5476 /* p1 will indicate "begin" or "end", but it makes
5477 no difference for now, so ignore it. */
5478 p_temp
= strchr (p1
+ 1, ';');
5482 else if (strncmp (p
, "core", p1
- p
) == 0)
5486 p
= unpack_varlen_hex (++p1
, &c
);
5491 /* Silently skip unknown optional info. */
5492 p_temp
= strchr (p1
+ 1, ';');
5499 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5500 cached_reg_t cached_reg
;
5505 error (_("Malformed packet(b) (missing colon): %s\n\
5511 error (_("Remote sent bad register number %s: %s\n\
5513 hex_string (pnum
), p
, buf
);
5515 cached_reg
.num
= reg
->regnum
;
5517 fieldsize
= hex2bin (p
, cached_reg
.data
,
5518 register_size (target_gdbarch (),
5521 if (fieldsize
< register_size (target_gdbarch (),
5523 warning (_("Remote reply is too short: %s"), buf
);
5525 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5529 error (_("Remote register badly formatted: %s\nhere: %s"),
5534 if (event
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
5538 case 'S': /* Old style status, just signal only. */
5542 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5543 sig
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
5544 if (GDB_SIGNAL_FIRST
<= sig
&& sig
< GDB_SIGNAL_LAST
)
5545 event
->ws
.value
.sig
= (enum gdb_signal
) sig
;
5547 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
5550 case 'W': /* Target exited. */
5557 /* GDB used to accept only 2 hex chars here. Stubs should
5558 only send more if they detect GDB supports multi-process
5560 p
= unpack_varlen_hex (&buf
[1], &value
);
5564 /* The remote process exited. */
5565 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5566 event
->ws
.value
.integer
= value
;
5570 /* The remote process exited with a signal. */
5571 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5572 if (GDB_SIGNAL_FIRST
<= value
&& value
< GDB_SIGNAL_LAST
)
5573 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5575 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
5578 /* If no process is specified, assume inferior_ptid. */
5579 pid
= ptid_get_pid (inferior_ptid
);
5588 else if (strncmp (p
,
5589 "process:", sizeof ("process:") - 1) == 0)
5593 p
+= sizeof ("process:") - 1;
5594 unpack_varlen_hex (p
, &upid
);
5598 error (_("unknown stop reply packet: %s"), buf
);
5601 error (_("unknown stop reply packet: %s"), buf
);
5602 event
->ptid
= pid_to_ptid (pid
);
5607 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5608 error (_("No process or thread specified in stop reply: %s"), buf
);
5611 /* When the stub wants to tell GDB about a new notification reply, it
5612 sends a notification (%Stop, for example). Those can come it at
5613 any time, hence, we have to make sure that any pending
5614 putpkt/getpkt sequence we're making is finished, before querying
5615 the stub for more events with the corresponding ack command
5616 (vStopped, for example). E.g., if we started a vStopped sequence
5617 immediately upon receiving the notification, something like this
5625 1.6) <-- (registers reply to step #1.3)
5627 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5630 To solve this, whenever we parse a %Stop notification successfully,
5631 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5632 doing whatever we were doing:
5638 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5639 2.5) <-- (registers reply to step #2.3)
5641 Eventualy after step #2.5, we return to the event loop, which
5642 notices there's an event on the
5643 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5644 associated callback --- the function below. At this point, we're
5645 always safe to start a vStopped sequence. :
5648 2.7) <-- T05 thread:2
5654 remote_notif_get_pending_events (struct notif_client
*nc
)
5656 struct remote_state
*rs
= get_remote_state ();
5658 if (rs
->notif_state
->pending_event
[nc
->id
] != NULL
)
5661 fprintf_unfiltered (gdb_stdlog
,
5662 "notif: process: '%s' ack pending event\n",
5666 nc
->ack (nc
, rs
->buf
, rs
->notif_state
->pending_event
[nc
->id
]);
5667 rs
->notif_state
->pending_event
[nc
->id
] = NULL
;
5671 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5672 if (strcmp (rs
->buf
, "OK") == 0)
5675 remote_notif_ack (nc
, rs
->buf
);
5681 fprintf_unfiltered (gdb_stdlog
,
5682 "notif: process: '%s' no pending reply\n",
5687 /* Called when it is decided that STOP_REPLY holds the info of the
5688 event that is to be returned to the core. This function always
5689 destroys STOP_REPLY. */
5692 process_stop_reply (struct stop_reply
*stop_reply
,
5693 struct target_waitstatus
*status
)
5697 *status
= stop_reply
->ws
;
5698 ptid
= stop_reply
->ptid
;
5700 /* If no thread/process was reported by the stub, assume the current
5702 if (ptid_equal (ptid
, null_ptid
))
5703 ptid
= inferior_ptid
;
5705 if (status
->kind
!= TARGET_WAITKIND_EXITED
5706 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5708 struct remote_state
*rs
= get_remote_state ();
5710 /* Expedited registers. */
5711 if (stop_reply
->regcache
)
5713 struct regcache
*regcache
5714 = get_thread_arch_regcache (ptid
, target_gdbarch ());
5719 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5721 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5722 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5725 rs
->remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5726 rs
->remote_watch_data_address
= stop_reply
->watch_data_address
;
5728 remote_notice_new_inferior (ptid
, 0);
5729 demand_private_info (ptid
)->core
= stop_reply
->core
;
5732 stop_reply_xfree (stop_reply
);
5736 /* The non-stop mode version of target_wait. */
5739 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5741 struct remote_state
*rs
= get_remote_state ();
5742 struct stop_reply
*stop_reply
;
5746 /* If in non-stop mode, get out of getpkt even if a
5747 notification is received. */
5749 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5750 0 /* forever */, &is_notif
);
5753 if (ret
!= -1 && !is_notif
)
5756 case 'E': /* Error of some sort. */
5757 /* We're out of sync with the target now. Did it continue
5758 or not? We can't tell which thread it was in non-stop,
5759 so just ignore this. */
5760 warning (_("Remote failure reply: %s"), rs
->buf
);
5762 case 'O': /* Console output. */
5763 remote_console_output (rs
->buf
+ 1);
5766 warning (_("Invalid remote reply: %s"), rs
->buf
);
5770 /* Acknowledge a pending stop reply that may have arrived in the
5772 if (rs
->notif_state
->pending_event
[notif_client_stop
.id
] != NULL
)
5773 remote_notif_get_pending_events (¬if_client_stop
);
5775 /* If indeed we noticed a stop reply, we're done. */
5776 stop_reply
= queued_stop_reply (ptid
);
5777 if (stop_reply
!= NULL
)
5778 return process_stop_reply (stop_reply
, status
);
5780 /* Still no event. If we're just polling for an event, then
5781 return to the event loop. */
5782 if (options
& TARGET_WNOHANG
)
5784 status
->kind
= TARGET_WAITKIND_IGNORE
;
5785 return minus_one_ptid
;
5788 /* Otherwise do a blocking wait. */
5789 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5790 1 /* forever */, &is_notif
);
5794 /* Wait until the remote machine stops, then return, storing status in
5795 STATUS just as `wait' would. */
5798 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5800 struct remote_state
*rs
= get_remote_state ();
5801 ptid_t event_ptid
= null_ptid
;
5803 struct stop_reply
*stop_reply
;
5807 status
->kind
= TARGET_WAITKIND_IGNORE
;
5808 status
->value
.integer
= 0;
5810 stop_reply
= queued_stop_reply (ptid
);
5811 if (stop_reply
!= NULL
)
5812 return process_stop_reply (stop_reply
, status
);
5814 if (rs
->cached_wait_status
)
5815 /* Use the cached wait status, but only once. */
5816 rs
->cached_wait_status
= 0;
5822 if (!target_is_async_p ())
5824 ofunc
= signal (SIGINT
, sync_remote_interrupt
);
5825 /* If the user hit C-c before this packet, or between packets,
5826 pretend that it was hit right here. */
5827 if (check_quit_flag ())
5830 sync_remote_interrupt (SIGINT
);
5834 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5835 _never_ wait for ever -> test on target_is_async_p().
5836 However, before we do that we need to ensure that the caller
5837 knows how to take the target into/out of async mode. */
5838 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5839 wait_forever_enabled_p
, &is_notif
);
5841 if (!target_is_async_p ())
5842 signal (SIGINT
, ofunc
);
5844 /* GDB gets a notification. Return to core as this event is
5846 if (ret
!= -1 && is_notif
)
5847 return minus_one_ptid
;
5852 rs
->remote_stopped_by_watchpoint_p
= 0;
5854 /* We got something. */
5855 rs
->waiting_for_stop_reply
= 0;
5857 /* Assume that the target has acknowledged Ctrl-C unless we receive
5858 an 'F' or 'O' packet. */
5859 if (buf
[0] != 'F' && buf
[0] != 'O')
5860 rs
->ctrlc_pending_p
= 0;
5864 case 'E': /* Error of some sort. */
5865 /* We're out of sync with the target now. Did it continue or
5866 not? Not is more likely, so report a stop. */
5867 warning (_("Remote failure reply: %s"), buf
);
5868 status
->kind
= TARGET_WAITKIND_STOPPED
;
5869 status
->value
.sig
= GDB_SIGNAL_0
;
5871 case 'F': /* File-I/O request. */
5872 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5873 rs
->ctrlc_pending_p
= 0;
5875 case 'T': case 'S': case 'X': case 'W':
5877 struct stop_reply
*stop_reply
5878 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
5881 event_ptid
= process_stop_reply (stop_reply
, status
);
5884 case 'O': /* Console output. */
5885 remote_console_output (buf
+ 1);
5887 /* The target didn't really stop; keep waiting. */
5888 rs
->waiting_for_stop_reply
= 1;
5892 if (rs
->last_sent_signal
!= GDB_SIGNAL_0
)
5894 /* Zero length reply means that we tried 'S' or 'C' and the
5895 remote system doesn't support it. */
5896 target_terminal_ours_for_output ();
5898 ("Can't send signals to this remote system. %s not sent.\n",
5899 gdb_signal_to_name (rs
->last_sent_signal
));
5900 rs
->last_sent_signal
= GDB_SIGNAL_0
;
5901 target_terminal_inferior ();
5903 strcpy ((char *) buf
, rs
->last_sent_step
? "s" : "c");
5904 putpkt ((char *) buf
);
5906 /* We just told the target to resume, so a stop reply is in
5908 rs
->waiting_for_stop_reply
= 1;
5911 /* else fallthrough */
5913 warning (_("Invalid remote reply: %s"), buf
);
5915 rs
->waiting_for_stop_reply
= 1;
5919 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
5921 /* Nothing interesting happened. If we're doing a non-blocking
5922 poll, we're done. Otherwise, go back to waiting. */
5923 if (options
& TARGET_WNOHANG
)
5924 return minus_one_ptid
;
5928 else if (status
->kind
!= TARGET_WAITKIND_EXITED
5929 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5931 if (!ptid_equal (event_ptid
, null_ptid
))
5932 record_currthread (rs
, event_ptid
);
5934 event_ptid
= inferior_ptid
;
5937 /* A process exit. Invalidate our notion of current thread. */
5938 record_currthread (rs
, minus_one_ptid
);
5943 /* Wait until the remote machine stops, then return, storing status in
5944 STATUS just as `wait' would. */
5947 remote_wait (struct target_ops
*ops
,
5948 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5953 event_ptid
= remote_wait_ns (ptid
, status
, options
);
5955 event_ptid
= remote_wait_as (ptid
, status
, options
);
5957 if (target_can_async_p ())
5959 /* If there are are events left in the queue tell the event loop
5961 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5962 mark_async_event_handler (remote_async_inferior_event_token
);
5968 /* Fetch a single register using a 'p' packet. */
5971 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
5973 struct remote_state
*rs
= get_remote_state ();
5975 char regp
[MAX_REGISTER_SIZE
];
5978 if (packet_support (PACKET_p
) == PACKET_DISABLE
)
5981 if (reg
->pnum
== -1)
5986 p
+= hexnumstr (p
, reg
->pnum
);
5989 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5993 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
5997 case PACKET_UNKNOWN
:
6000 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
6001 gdbarch_register_name (get_regcache_arch (regcache
),
6006 /* If this register is unfetchable, tell the regcache. */
6009 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6013 /* Otherwise, parse and supply the value. */
6019 error (_("fetch_register_using_p: early buf termination"));
6021 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6024 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
6028 /* Fetch the registers included in the target's 'g' packet. */
6031 send_g_packet (void)
6033 struct remote_state
*rs
= get_remote_state ();
6036 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
6037 remote_send (&rs
->buf
, &rs
->buf_size
);
6039 /* We can get out of synch in various cases. If the first character
6040 in the buffer is not a hex character, assume that has happened
6041 and try to fetch another packet to read. */
6042 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
6043 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
6044 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
6045 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
6048 fprintf_unfiltered (gdb_stdlog
,
6049 "Bad register packet; fetching a new packet\n");
6050 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6053 buf_len
= strlen (rs
->buf
);
6055 /* Sanity check the received packet. */
6056 if (buf_len
% 2 != 0)
6057 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
6063 process_g_packet (struct regcache
*regcache
)
6065 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6066 struct remote_state
*rs
= get_remote_state ();
6067 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6072 buf_len
= strlen (rs
->buf
);
6074 /* Further sanity checks, with knowledge of the architecture. */
6075 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
6076 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
6078 /* Save the size of the packet sent to us by the target. It is used
6079 as a heuristic when determining the max size of packets that the
6080 target can safely receive. */
6081 if (rsa
->actual_register_packet_size
== 0)
6082 rsa
->actual_register_packet_size
= buf_len
;
6084 /* If this is smaller than we guessed the 'g' packet would be,
6085 update our records. A 'g' reply that doesn't include a register's
6086 value implies either that the register is not available, or that
6087 the 'p' packet must be used. */
6088 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
6090 rsa
->sizeof_g_packet
= buf_len
/ 2;
6092 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6094 if (rsa
->regs
[i
].pnum
== -1)
6097 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
6098 rsa
->regs
[i
].in_g_packet
= 0;
6100 rsa
->regs
[i
].in_g_packet
= 1;
6104 regs
= alloca (rsa
->sizeof_g_packet
);
6106 /* Unimplemented registers read as all bits zero. */
6107 memset (regs
, 0, rsa
->sizeof_g_packet
);
6109 /* Reply describes registers byte by byte, each byte encoded as two
6110 hex characters. Suck them all up, then supply them to the
6111 register cacheing/storage mechanism. */
6114 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6116 if (p
[0] == 0 || p
[1] == 0)
6117 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6118 internal_error (__FILE__
, __LINE__
,
6119 _("unexpected end of 'g' packet reply"));
6121 if (p
[0] == 'x' && p
[1] == 'x')
6122 regs
[i
] = 0; /* 'x' */
6124 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6128 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6130 struct packet_reg
*r
= &rsa
->regs
[i
];
6134 if (r
->offset
* 2 >= strlen (rs
->buf
))
6135 /* This shouldn't happen - we adjusted in_g_packet above. */
6136 internal_error (__FILE__
, __LINE__
,
6137 _("unexpected end of 'g' packet reply"));
6138 else if (rs
->buf
[r
->offset
* 2] == 'x')
6140 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6141 /* The register isn't available, mark it as such (at
6142 the same time setting the value to zero). */
6143 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6146 regcache_raw_supply (regcache
, r
->regnum
,
6153 fetch_registers_using_g (struct regcache
*regcache
)
6156 process_g_packet (regcache
);
6159 /* Make the remote selected traceframe match GDB's selected
6163 set_remote_traceframe (void)
6166 struct remote_state
*rs
= get_remote_state ();
6168 if (rs
->remote_traceframe_number
== get_traceframe_number ())
6171 /* Avoid recursion, remote_trace_find calls us again. */
6172 rs
->remote_traceframe_number
= get_traceframe_number ();
6174 newnum
= target_trace_find (tfind_number
,
6175 get_traceframe_number (), 0, 0, NULL
);
6177 /* Should not happen. If it does, all bets are off. */
6178 if (newnum
!= get_traceframe_number ())
6179 warning (_("could not set remote traceframe"));
6183 remote_fetch_registers (struct target_ops
*ops
,
6184 struct regcache
*regcache
, int regnum
)
6186 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6189 set_remote_traceframe ();
6190 set_general_thread (inferior_ptid
);
6194 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6196 gdb_assert (reg
!= NULL
);
6198 /* If this register might be in the 'g' packet, try that first -
6199 we are likely to read more than one register. If this is the
6200 first 'g' packet, we might be overly optimistic about its
6201 contents, so fall back to 'p'. */
6202 if (reg
->in_g_packet
)
6204 fetch_registers_using_g (regcache
);
6205 if (reg
->in_g_packet
)
6209 if (fetch_register_using_p (regcache
, reg
))
6212 /* This register is not available. */
6213 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6218 fetch_registers_using_g (regcache
);
6220 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6221 if (!rsa
->regs
[i
].in_g_packet
)
6222 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6224 /* This register is not available. */
6225 regcache_raw_supply (regcache
, i
, NULL
);
6229 /* Prepare to store registers. Since we may send them all (using a
6230 'G' request), we have to read out the ones we don't want to change
6234 remote_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
6236 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6238 gdb_byte buf
[MAX_REGISTER_SIZE
];
6240 /* Make sure the entire registers array is valid. */
6241 switch (packet_support (PACKET_P
))
6243 case PACKET_DISABLE
:
6244 case PACKET_SUPPORT_UNKNOWN
:
6245 /* Make sure all the necessary registers are cached. */
6246 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6247 if (rsa
->regs
[i
].in_g_packet
)
6248 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6255 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6256 packet was not recognized. */
6259 store_register_using_P (const struct regcache
*regcache
,
6260 struct packet_reg
*reg
)
6262 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6263 struct remote_state
*rs
= get_remote_state ();
6264 /* Try storing a single register. */
6265 char *buf
= rs
->buf
;
6266 gdb_byte regp
[MAX_REGISTER_SIZE
];
6269 if (packet_support (PACKET_P
) == PACKET_DISABLE
)
6272 if (reg
->pnum
== -1)
6275 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6276 p
= buf
+ strlen (buf
);
6277 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6278 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6280 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6282 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6287 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6288 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6289 case PACKET_UNKNOWN
:
6292 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6296 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6297 contents of the register cache buffer. FIXME: ignores errors. */
6300 store_registers_using_G (const struct regcache
*regcache
)
6302 struct remote_state
*rs
= get_remote_state ();
6303 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6307 /* Extract all the registers in the regcache copying them into a
6312 regs
= alloca (rsa
->sizeof_g_packet
);
6313 memset (regs
, 0, rsa
->sizeof_g_packet
);
6314 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6316 struct packet_reg
*r
= &rsa
->regs
[i
];
6319 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6323 /* Command describes registers byte by byte,
6324 each byte encoded as two hex characters. */
6327 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6329 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6331 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6332 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6333 error (_("Could not write registers; remote failure reply '%s'"),
6337 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6338 of the register cache buffer. FIXME: ignores errors. */
6341 remote_store_registers (struct target_ops
*ops
,
6342 struct regcache
*regcache
, int regnum
)
6344 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6347 set_remote_traceframe ();
6348 set_general_thread (inferior_ptid
);
6352 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6354 gdb_assert (reg
!= NULL
);
6356 /* Always prefer to store registers using the 'P' packet if
6357 possible; we often change only a small number of registers.
6358 Sometimes we change a larger number; we'd need help from a
6359 higher layer to know to use 'G'. */
6360 if (store_register_using_P (regcache
, reg
))
6363 /* For now, don't complain if we have no way to write the
6364 register. GDB loses track of unavailable registers too
6365 easily. Some day, this may be an error. We don't have
6366 any way to read the register, either... */
6367 if (!reg
->in_g_packet
)
6370 store_registers_using_G (regcache
);
6374 store_registers_using_G (regcache
);
6376 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6377 if (!rsa
->regs
[i
].in_g_packet
)
6378 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6379 /* See above for why we do not issue an error here. */
6384 /* Return the number of hex digits in num. */
6387 hexnumlen (ULONGEST num
)
6391 for (i
= 0; num
!= 0; i
++)
6397 /* Set BUF to the minimum number of hex digits representing NUM. */
6400 hexnumstr (char *buf
, ULONGEST num
)
6402 int len
= hexnumlen (num
);
6404 return hexnumnstr (buf
, num
, len
);
6408 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6411 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6417 for (i
= width
- 1; i
>= 0; i
--)
6419 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6426 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6429 remote_address_masked (CORE_ADDR addr
)
6431 unsigned int address_size
= remote_address_size
;
6433 /* If "remoteaddresssize" was not set, default to target address size. */
6435 address_size
= gdbarch_addr_bit (target_gdbarch ());
6437 if (address_size
> 0
6438 && address_size
< (sizeof (ULONGEST
) * 8))
6440 /* Only create a mask when that mask can safely be constructed
6441 in a ULONGEST variable. */
6444 mask
= (mask
<< address_size
) - 1;
6450 /* Determine whether the remote target supports binary downloading.
6451 This is accomplished by sending a no-op memory write of zero length
6452 to the target at the specified address. It does not suffice to send
6453 the whole packet, since many stubs strip the eighth bit and
6454 subsequently compute a wrong checksum, which causes real havoc with
6457 NOTE: This can still lose if the serial line is not eight-bit
6458 clean. In cases like this, the user should clear "remote
6462 check_binary_download (CORE_ADDR addr
)
6464 struct remote_state
*rs
= get_remote_state ();
6466 switch (packet_support (PACKET_X
))
6468 case PACKET_DISABLE
:
6472 case PACKET_SUPPORT_UNKNOWN
:
6478 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6480 p
+= hexnumstr (p
, (ULONGEST
) 0);
6484 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6485 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6487 if (rs
->buf
[0] == '\0')
6490 fprintf_unfiltered (gdb_stdlog
,
6491 "binary downloading NOT "
6492 "supported by target\n");
6493 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6498 fprintf_unfiltered (gdb_stdlog
,
6499 "binary downloading supported by target\n");
6500 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6507 /* Write memory data directly to the remote machine.
6508 This does not inform the data cache; the data cache uses this.
6509 HEADER is the starting part of the packet.
6510 MEMADDR is the address in the remote memory space.
6511 MYADDR is the address of the buffer in our space.
6512 LEN is the number of bytes.
6513 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6514 should send data as binary ('X'), or hex-encoded ('M').
6516 The function creates packet of the form
6517 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6519 where encoding of <DATA> is termined by PACKET_FORMAT.
6521 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6524 Return the transferred status, error or OK (an
6525 'enum target_xfer_status' value). Save the number of bytes
6526 transferred in *XFERED_LEN. Only transfer a single packet. */
6528 static enum target_xfer_status
6529 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6530 const gdb_byte
*myaddr
, ULONGEST len
,
6531 ULONGEST
*xfered_len
, char packet_format
,
6534 struct remote_state
*rs
= get_remote_state ();
6544 if (packet_format
!= 'X' && packet_format
!= 'M')
6545 internal_error (__FILE__
, __LINE__
,
6546 _("remote_write_bytes_aux: bad packet format"));
6549 return TARGET_XFER_EOF
;
6551 payload_size
= get_memory_write_packet_size ();
6553 /* The packet buffer will be large enough for the payload;
6554 get_memory_packet_size ensures this. */
6557 /* Compute the size of the actual payload by subtracting out the
6558 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6560 payload_size
-= strlen ("$,:#NN");
6562 /* The comma won't be used. */
6564 header_length
= strlen (header
);
6565 payload_size
-= header_length
;
6566 payload_size
-= hexnumlen (memaddr
);
6568 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6570 strcat (rs
->buf
, header
);
6571 p
= rs
->buf
+ strlen (header
);
6573 /* Compute a best guess of the number of bytes actually transfered. */
6574 if (packet_format
== 'X')
6576 /* Best guess at number of bytes that will fit. */
6577 todo
= min (len
, payload_size
);
6579 payload_size
-= hexnumlen (todo
);
6580 todo
= min (todo
, payload_size
);
6584 /* Num bytes that will fit. */
6585 todo
= min (len
, payload_size
/ 2);
6587 payload_size
-= hexnumlen (todo
);
6588 todo
= min (todo
, payload_size
/ 2);
6592 internal_error (__FILE__
, __LINE__
,
6593 _("minimum packet size too small to write data"));
6595 /* If we already need another packet, then try to align the end
6596 of this packet to a useful boundary. */
6597 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6598 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6600 /* Append "<memaddr>". */
6601 memaddr
= remote_address_masked (memaddr
);
6602 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6609 /* Append <len>. Retain the location/size of <len>. It may need to
6610 be adjusted once the packet body has been created. */
6612 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6620 /* Append the packet body. */
6621 if (packet_format
== 'X')
6623 /* Binary mode. Send target system values byte by byte, in
6624 increasing byte addresses. Only escape certain critical
6626 payload_length
= remote_escape_output (myaddr
, todo
, (gdb_byte
*) p
,
6627 &nr_bytes
, payload_size
);
6629 /* If not all TODO bytes fit, then we'll need another packet. Make
6630 a second try to keep the end of the packet aligned. Don't do
6631 this if the packet is tiny. */
6632 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6636 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6638 if (new_nr_bytes
!= nr_bytes
)
6639 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6640 (gdb_byte
*) p
, &nr_bytes
,
6644 p
+= payload_length
;
6645 if (use_length
&& nr_bytes
< todo
)
6647 /* Escape chars have filled up the buffer prematurely,
6648 and we have actually sent fewer bytes than planned.
6649 Fix-up the length field of the packet. Use the same
6650 number of characters as before. */
6651 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6652 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6657 /* Normal mode: Send target system values byte by byte, in
6658 increasing byte addresses. Each byte is encoded as a two hex
6660 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6664 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6665 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6667 if (rs
->buf
[0] == 'E')
6668 return TARGET_XFER_E_IO
;
6670 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6671 fewer bytes than we'd planned. */
6672 *xfered_len
= (ULONGEST
) nr_bytes
;
6673 return TARGET_XFER_OK
;
6676 /* Write memory data directly to the remote machine.
6677 This does not inform the data cache; the data cache uses this.
6678 MEMADDR is the address in the remote memory space.
6679 MYADDR is the address of the buffer in our space.
6680 LEN is the number of bytes.
6682 Return the transferred status, error or OK (an
6683 'enum target_xfer_status' value). Save the number of bytes
6684 transferred in *XFERED_LEN. Only transfer a single packet. */
6686 static enum target_xfer_status
6687 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ULONGEST len
,
6688 ULONGEST
*xfered_len
)
6690 char *packet_format
= 0;
6692 /* Check whether the target supports binary download. */
6693 check_binary_download (memaddr
);
6695 switch (packet_support (PACKET_X
))
6698 packet_format
= "X";
6700 case PACKET_DISABLE
:
6701 packet_format
= "M";
6703 case PACKET_SUPPORT_UNKNOWN
:
6704 internal_error (__FILE__
, __LINE__
,
6705 _("remote_write_bytes: bad internal state"));
6707 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6710 return remote_write_bytes_aux (packet_format
,
6711 memaddr
, myaddr
, len
, xfered_len
,
6712 packet_format
[0], 1);
6715 /* Read memory data directly from the remote machine.
6716 This does not use the data cache; the data cache uses this.
6717 MEMADDR is the address in the remote memory space.
6718 MYADDR is the address of the buffer in our space.
6719 LEN is the number of bytes.
6721 Return the transferred status, error or OK (an
6722 'enum target_xfer_status' value). Save the number of bytes
6723 transferred in *XFERED_LEN. */
6725 static enum target_xfer_status
6726 remote_read_bytes_1 (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
6727 ULONGEST
*xfered_len
)
6729 struct remote_state
*rs
= get_remote_state ();
6730 int max_buf_size
; /* Max size of packet output buffer. */
6735 max_buf_size
= get_memory_read_packet_size ();
6736 /* The packet buffer will be large enough for the payload;
6737 get_memory_packet_size ensures this. */
6739 /* Number if bytes that will fit. */
6740 todo
= min (len
, max_buf_size
/ 2);
6742 /* Construct "m"<memaddr>","<len>". */
6743 memaddr
= remote_address_masked (memaddr
);
6746 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6748 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6751 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6752 if (rs
->buf
[0] == 'E'
6753 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6754 && rs
->buf
[3] == '\0')
6755 return TARGET_XFER_E_IO
;
6756 /* Reply describes memory byte by byte, each byte encoded as two hex
6759 i
= hex2bin (p
, myaddr
, todo
);
6760 /* Return what we have. Let higher layers handle partial reads. */
6761 *xfered_len
= (ULONGEST
) i
;
6762 return TARGET_XFER_OK
;
6765 /* Using the set of read-only target sections of remote, read live
6768 For interface/parameters/return description see target.h,
6771 static enum target_xfer_status
6772 remote_xfer_live_readonly_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
6773 ULONGEST memaddr
, ULONGEST len
,
6774 ULONGEST
*xfered_len
)
6776 struct target_section
*secp
;
6777 struct target_section_table
*table
;
6779 secp
= target_section_by_addr (ops
, memaddr
);
6781 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
6782 secp
->the_bfd_section
)
6785 struct target_section
*p
;
6786 ULONGEST memend
= memaddr
+ len
;
6788 table
= target_get_section_table (ops
);
6790 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
6792 if (memaddr
>= p
->addr
)
6794 if (memend
<= p
->endaddr
)
6796 /* Entire transfer is within this section. */
6797 return remote_read_bytes_1 (memaddr
, readbuf
, len
,
6800 else if (memaddr
>= p
->endaddr
)
6802 /* This section ends before the transfer starts. */
6807 /* This section overlaps the transfer. Just do half. */
6808 len
= p
->endaddr
- memaddr
;
6809 return remote_read_bytes_1 (memaddr
, readbuf
, len
,
6816 return TARGET_XFER_EOF
;
6819 /* Similar to remote_read_bytes_1, but it reads from the remote stub
6820 first if the requested memory is unavailable in traceframe.
6821 Otherwise, fall back to remote_read_bytes_1. */
6823 static enum target_xfer_status
6824 remote_read_bytes (struct target_ops
*ops
, CORE_ADDR memaddr
,
6825 gdb_byte
*myaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
6830 if (get_traceframe_number () != -1)
6832 VEC(mem_range_s
) *available
;
6834 /* If we fail to get the set of available memory, then the
6835 target does not support querying traceframe info, and so we
6836 attempt reading from the traceframe anyway (assuming the
6837 target implements the old QTro packet then). */
6838 if (traceframe_available_memory (&available
, memaddr
, len
))
6840 struct cleanup
*old_chain
;
6842 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
6844 if (VEC_empty (mem_range_s
, available
)
6845 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
6847 enum target_xfer_status res
;
6849 /* Don't read into the traceframe's available
6851 if (!VEC_empty (mem_range_s
, available
))
6853 LONGEST oldlen
= len
;
6855 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
6856 gdb_assert (len
<= oldlen
);
6859 do_cleanups (old_chain
);
6861 /* This goes through the topmost target again. */
6862 res
= remote_xfer_live_readonly_partial (ops
, myaddr
, memaddr
,
6864 if (res
== TARGET_XFER_OK
)
6865 return TARGET_XFER_OK
;
6868 /* No use trying further, we know some memory starting
6869 at MEMADDR isn't available. */
6871 return TARGET_XFER_UNAVAILABLE
;
6875 /* Don't try to read more than how much is available, in
6876 case the target implements the deprecated QTro packet to
6877 cater for older GDBs (the target's knowledge of read-only
6878 sections may be outdated by now). */
6879 len
= VEC_index (mem_range_s
, available
, 0)->length
;
6881 do_cleanups (old_chain
);
6885 return remote_read_bytes_1 (memaddr
, myaddr
, len
, xfered_len
);
6890 /* Sends a packet with content determined by the printf format string
6891 FORMAT and the remaining arguments, then gets the reply. Returns
6892 whether the packet was a success, a failure, or unknown. */
6894 static enum packet_result
6895 remote_send_printf (const char *format
, ...)
6897 struct remote_state
*rs
= get_remote_state ();
6898 int max_size
= get_remote_packet_size ();
6901 va_start (ap
, format
);
6904 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6905 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
6907 if (putpkt (rs
->buf
) < 0)
6908 error (_("Communication problem with target."));
6911 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6913 return packet_check_result (rs
->buf
);
6917 restore_remote_timeout (void *p
)
6919 int value
= *(int *)p
;
6921 remote_timeout
= value
;
6924 /* Flash writing can take quite some time. We'll set
6925 effectively infinite timeout for flash operations.
6926 In future, we'll need to decide on a better approach. */
6927 static const int remote_flash_timeout
= 1000;
6930 remote_flash_erase (struct target_ops
*ops
,
6931 ULONGEST address
, LONGEST length
)
6933 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
6934 int saved_remote_timeout
= remote_timeout
;
6935 enum packet_result ret
;
6936 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6937 &saved_remote_timeout
);
6939 remote_timeout
= remote_flash_timeout
;
6941 ret
= remote_send_printf ("vFlashErase:%s,%s",
6942 phex (address
, addr_size
),
6946 case PACKET_UNKNOWN
:
6947 error (_("Remote target does not support flash erase"));
6949 error (_("Error erasing flash with vFlashErase packet"));
6954 do_cleanups (back_to
);
6957 static enum target_xfer_status
6958 remote_flash_write (struct target_ops
*ops
, ULONGEST address
,
6959 ULONGEST length
, ULONGEST
*xfered_len
,
6960 const gdb_byte
*data
)
6962 int saved_remote_timeout
= remote_timeout
;
6963 enum target_xfer_status ret
;
6964 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6965 &saved_remote_timeout
);
6967 remote_timeout
= remote_flash_timeout
;
6968 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
,
6970 do_cleanups (back_to
);
6976 remote_flash_done (struct target_ops
*ops
)
6978 int saved_remote_timeout
= remote_timeout
;
6980 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6981 &saved_remote_timeout
);
6983 remote_timeout
= remote_flash_timeout
;
6984 ret
= remote_send_printf ("vFlashDone");
6985 do_cleanups (back_to
);
6989 case PACKET_UNKNOWN
:
6990 error (_("Remote target does not support vFlashDone"));
6992 error (_("Error finishing flash operation"));
6999 remote_files_info (struct target_ops
*ignore
)
7001 puts_filtered ("Debugging a target over a serial line.\n");
7004 /* Stuff for dealing with the packets which are part of this protocol.
7005 See comment at top of file for details. */
7007 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
7008 error to higher layers. Called when a serial error is detected.
7009 The exception message is STRING, followed by a colon and a blank,
7010 the system error message for errno at function entry and final dot
7011 for output compatibility with throw_perror_with_name. */
7014 unpush_and_perror (const char *string
)
7016 int saved_errno
= errno
;
7018 remote_unpush_target ();
7019 throw_error (TARGET_CLOSE_ERROR
, "%s: %s.", string
,
7020 safe_strerror (saved_errno
));
7023 /* Read a single character from the remote end. */
7026 readchar (int timeout
)
7029 struct remote_state
*rs
= get_remote_state ();
7031 ch
= serial_readchar (rs
->remote_desc
, timeout
);
7036 switch ((enum serial_rc
) ch
)
7039 remote_unpush_target ();
7040 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
7043 unpush_and_perror (_("Remote communication error. "
7044 "Target disconnected."));
7046 case SERIAL_TIMEOUT
:
7052 /* Wrapper for serial_write that closes the target and throws if
7056 remote_serial_write (const char *str
, int len
)
7058 struct remote_state
*rs
= get_remote_state ();
7060 if (serial_write (rs
->remote_desc
, str
, len
))
7062 unpush_and_perror (_("Remote communication error. "
7063 "Target disconnected."));
7067 /* Send the command in *BUF to the remote machine, and read the reply
7068 into *BUF. Report an error if we get an error reply. Resize
7069 *BUF using xrealloc if necessary to hold the result, and update
7073 remote_send (char **buf
,
7077 getpkt (buf
, sizeof_buf
, 0);
7079 if ((*buf
)[0] == 'E')
7080 error (_("Remote failure reply: %s"), *buf
);
7083 /* Return a pointer to an xmalloc'ed string representing an escaped
7084 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
7085 etc. The caller is responsible for releasing the returned
7089 escape_buffer (const char *buf
, int n
)
7091 struct cleanup
*old_chain
;
7092 struct ui_file
*stb
;
7095 stb
= mem_fileopen ();
7096 old_chain
= make_cleanup_ui_file_delete (stb
);
7098 fputstrn_unfiltered (buf
, n
, '\\', stb
);
7099 str
= ui_file_xstrdup (stb
, NULL
);
7100 do_cleanups (old_chain
);
7104 /* Display a null-terminated packet on stdout, for debugging, using C
7108 print_packet (const char *buf
)
7110 puts_filtered ("\"");
7111 fputstr_filtered (buf
, '"', gdb_stdout
);
7112 puts_filtered ("\"");
7116 putpkt (const char *buf
)
7118 return putpkt_binary (buf
, strlen (buf
));
7121 /* Send a packet to the remote machine, with error checking. The data
7122 of the packet is in BUF. The string in BUF can be at most
7123 get_remote_packet_size () - 5 to account for the $, # and checksum,
7124 and for a possible /0 if we are debugging (remote_debug) and want
7125 to print the sent packet as a string. */
7128 putpkt_binary (const char *buf
, int cnt
)
7130 struct remote_state
*rs
= get_remote_state ();
7132 unsigned char csum
= 0;
7133 char *buf2
= alloca (cnt
+ 6);
7140 /* Catch cases like trying to read memory or listing threads while
7141 we're waiting for a stop reply. The remote server wouldn't be
7142 ready to handle this request, so we'd hang and timeout. We don't
7143 have to worry about this in synchronous mode, because in that
7144 case it's not possible to issue a command while the target is
7145 running. This is not a problem in non-stop mode, because in that
7146 case, the stub is always ready to process serial input. */
7147 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
7149 error (_("Cannot execute this command while the target is running.\n"
7150 "Use the \"interrupt\" command to stop the target\n"
7151 "and then try again."));
7154 /* We're sending out a new packet. Make sure we don't look at a
7155 stale cached response. */
7156 rs
->cached_wait_status
= 0;
7158 /* Copy the packet into buffer BUF2, encapsulating it
7159 and giving it a checksum. */
7164 for (i
= 0; i
< cnt
; i
++)
7170 *p
++ = tohex ((csum
>> 4) & 0xf);
7171 *p
++ = tohex (csum
& 0xf);
7173 /* Send it over and over until we get a positive ack. */
7177 int started_error_output
= 0;
7181 struct cleanup
*old_chain
;
7185 str
= escape_buffer (buf2
, p
- buf2
);
7186 old_chain
= make_cleanup (xfree
, str
);
7187 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7188 gdb_flush (gdb_stdlog
);
7189 do_cleanups (old_chain
);
7191 remote_serial_write (buf2
, p
- buf2
);
7193 /* If this is a no acks version of the remote protocol, send the
7194 packet and move on. */
7198 /* Read until either a timeout occurs (-2) or '+' is read.
7199 Handle any notification that arrives in the mean time. */
7202 ch
= readchar (remote_timeout
);
7210 case SERIAL_TIMEOUT
:
7213 if (started_error_output
)
7215 putchar_unfiltered ('\n');
7216 started_error_output
= 0;
7225 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7229 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7231 case SERIAL_TIMEOUT
:
7235 break; /* Retransmit buffer. */
7239 fprintf_unfiltered (gdb_stdlog
,
7240 "Packet instead of Ack, ignoring it\n");
7241 /* It's probably an old response sent because an ACK
7242 was lost. Gobble up the packet and ack it so it
7243 doesn't get retransmitted when we resend this
7246 remote_serial_write ("+", 1);
7247 continue; /* Now, go look for +. */
7254 /* If we got a notification, handle it, and go back to looking
7256 /* We've found the start of a notification. Now
7257 collect the data. */
7258 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7263 struct cleanup
*old_chain
;
7266 str
= escape_buffer (rs
->buf
, val
);
7267 old_chain
= make_cleanup (xfree
, str
);
7268 fprintf_unfiltered (gdb_stdlog
,
7269 " Notification received: %s\n",
7271 do_cleanups (old_chain
);
7273 handle_notification (rs
->notif_state
, rs
->buf
);
7274 /* We're in sync now, rewait for the ack. */
7281 if (!started_error_output
)
7283 started_error_output
= 1;
7284 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7286 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7287 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7296 if (!started_error_output
)
7298 started_error_output
= 1;
7299 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7301 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7305 break; /* Here to retransmit. */
7309 /* This is wrong. If doing a long backtrace, the user should be
7310 able to get out next time we call QUIT, without anything as
7311 violent as interrupt_query. If we want to provide a way out of
7312 here without getting to the next QUIT, it should be based on
7313 hitting ^C twice as in remote_wait. */
7324 /* Come here after finding the start of a frame when we expected an
7325 ack. Do our best to discard the rest of this packet. */
7334 c
= readchar (remote_timeout
);
7337 case SERIAL_TIMEOUT
:
7338 /* Nothing we can do. */
7341 /* Discard the two bytes of checksum and stop. */
7342 c
= readchar (remote_timeout
);
7344 c
= readchar (remote_timeout
);
7347 case '*': /* Run length encoding. */
7348 /* Discard the repeat count. */
7349 c
= readchar (remote_timeout
);
7354 /* A regular character. */
7360 /* Come here after finding the start of the frame. Collect the rest
7361 into *BUF, verifying the checksum, length, and handling run-length
7362 compression. NUL terminate the buffer. If there is not enough room,
7363 expand *BUF using xrealloc.
7365 Returns -1 on error, number of characters in buffer (ignoring the
7366 trailing NULL) on success. (could be extended to return one of the
7367 SERIAL status indications). */
7370 read_frame (char **buf_p
,
7377 struct remote_state
*rs
= get_remote_state ();
7384 c
= readchar (remote_timeout
);
7387 case SERIAL_TIMEOUT
:
7389 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7393 fputs_filtered ("Saw new packet start in middle of old one\n",
7395 return -1; /* Start a new packet, count retries. */
7398 unsigned char pktcsum
;
7404 check_0
= readchar (remote_timeout
);
7406 check_1
= readchar (remote_timeout
);
7408 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7411 fputs_filtered ("Timeout in checksum, retrying\n",
7415 else if (check_0
< 0 || check_1
< 0)
7418 fputs_filtered ("Communication error in checksum\n",
7423 /* Don't recompute the checksum; with no ack packets we
7424 don't have any way to indicate a packet retransmission
7429 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7430 if (csum
== pktcsum
)
7435 struct cleanup
*old_chain
;
7438 str
= escape_buffer (buf
, bc
);
7439 old_chain
= make_cleanup (xfree
, str
);
7440 fprintf_unfiltered (gdb_stdlog
,
7441 "Bad checksum, sentsum=0x%x, "
7442 "csum=0x%x, buf=%s\n",
7443 pktcsum
, csum
, str
);
7444 do_cleanups (old_chain
);
7446 /* Number of characters in buffer ignoring trailing
7450 case '*': /* Run length encoding. */
7455 c
= readchar (remote_timeout
);
7457 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7459 /* The character before ``*'' is repeated. */
7461 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7463 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7465 /* Make some more room in the buffer. */
7466 *sizeof_buf
+= repeat
;
7467 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7471 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7477 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7481 if (bc
>= *sizeof_buf
- 1)
7483 /* Make some more room in the buffer. */
7485 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7496 /* Read a packet from the remote machine, with error checking, and
7497 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7498 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7499 rather than timing out; this is used (in synchronous mode) to wait
7500 for a target that is is executing user code to stop. */
7501 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7502 don't have to change all the calls to getpkt to deal with the
7503 return value, because at the moment I don't know what the right
7504 thing to do it for those. */
7512 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7516 /* Read a packet from the remote machine, with error checking, and
7517 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7518 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7519 rather than timing out; this is used (in synchronous mode) to wait
7520 for a target that is is executing user code to stop. If FOREVER ==
7521 0, this function is allowed to time out gracefully and return an
7522 indication of this to the caller. Otherwise return the number of
7523 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7524 enough reason to return to the caller. *IS_NOTIF is an output
7525 boolean that indicates whether *BUF holds a notification or not
7526 (a regular packet). */
7529 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7530 int expecting_notif
, int *is_notif
)
7532 struct remote_state
*rs
= get_remote_state ();
7538 /* We're reading a new response. Make sure we don't look at a
7539 previously cached response. */
7540 rs
->cached_wait_status
= 0;
7542 strcpy (*buf
, "timeout");
7545 timeout
= watchdog
> 0 ? watchdog
: -1;
7546 else if (expecting_notif
)
7547 timeout
= 0; /* There should already be a char in the buffer. If
7550 timeout
= remote_timeout
;
7554 /* Process any number of notifications, and then return when
7558 /* If we get a timeout or bad checksum, retry up to MAX_TRIES
7560 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7562 /* This can loop forever if the remote side sends us
7563 characters continuously, but if it pauses, we'll get
7564 SERIAL_TIMEOUT from readchar because of timeout. Then
7565 we'll count that as a retry.
7567 Note that even when forever is set, we will only wait
7568 forever prior to the start of a packet. After that, we
7569 expect characters to arrive at a brisk pace. They should
7570 show up within remote_timeout intervals. */
7572 c
= readchar (timeout
);
7573 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7575 if (c
== SERIAL_TIMEOUT
)
7577 if (expecting_notif
)
7578 return -1; /* Don't complain, it's normal to not get
7579 anything in this case. */
7581 if (forever
) /* Watchdog went off? Kill the target. */
7584 remote_unpush_target ();
7585 throw_error (TARGET_CLOSE_ERROR
,
7586 _("Watchdog timeout has expired. "
7587 "Target detached."));
7590 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7594 /* We've found the start of a packet or notification.
7595 Now collect the data. */
7596 val
= read_frame (buf
, sizeof_buf
);
7601 remote_serial_write ("-", 1);
7604 if (tries
> MAX_TRIES
)
7606 /* We have tried hard enough, and just can't receive the
7607 packet/notification. Give up. */
7608 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7610 /* Skip the ack char if we're in no-ack mode. */
7611 if (!rs
->noack_mode
)
7612 remote_serial_write ("+", 1);
7616 /* If we got an ordinary packet, return that to our caller. */
7621 struct cleanup
*old_chain
;
7624 str
= escape_buffer (*buf
, val
);
7625 old_chain
= make_cleanup (xfree
, str
);
7626 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7627 do_cleanups (old_chain
);
7630 /* Skip the ack char if we're in no-ack mode. */
7631 if (!rs
->noack_mode
)
7632 remote_serial_write ("+", 1);
7633 if (is_notif
!= NULL
)
7638 /* If we got a notification, handle it, and go back to looking
7642 gdb_assert (c
== '%');
7646 struct cleanup
*old_chain
;
7649 str
= escape_buffer (*buf
, val
);
7650 old_chain
= make_cleanup (xfree
, str
);
7651 fprintf_unfiltered (gdb_stdlog
,
7652 " Notification received: %s\n",
7654 do_cleanups (old_chain
);
7656 if (is_notif
!= NULL
)
7659 handle_notification (rs
->notif_state
, *buf
);
7661 /* Notifications require no acknowledgement. */
7663 if (expecting_notif
)
7670 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7672 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
7676 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
7679 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
7685 remote_kill (struct target_ops
*ops
)
7687 volatile struct gdb_exception ex
;
7689 /* Catch errors so the user can quit from gdb even when we
7690 aren't on speaking terms with the remote system. */
7691 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
7697 if (ex
.error
== TARGET_CLOSE_ERROR
)
7699 /* If we got an (EOF) error that caused the target
7700 to go away, then we're done, that's what we wanted.
7701 "k" is susceptible to cause a premature EOF, given
7702 that the remote server isn't actually required to
7703 reply to "k", and it can happen that it doesn't
7704 even get to reply ACK to the "k". */
7708 /* Otherwise, something went wrong. We didn't actually kill
7709 the target. Just propagate the exception, and let the
7710 user or higher layers decide what to do. */
7711 throw_exception (ex
);
7714 /* We've killed the remote end, we get to mourn it. Since this is
7715 target remote, single-process, mourning the inferior also
7716 unpushes remote_ops. */
7717 target_mourn_inferior ();
7721 remote_vkill (int pid
, struct remote_state
*rs
)
7723 if (packet_support (PACKET_vKill
) == PACKET_DISABLE
)
7726 /* Tell the remote target to detach. */
7727 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7729 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7731 switch (packet_ok (rs
->buf
,
7732 &remote_protocol_packets
[PACKET_vKill
]))
7738 case PACKET_UNKNOWN
:
7741 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
7746 extended_remote_kill (struct target_ops
*ops
)
7749 int pid
= ptid_get_pid (inferior_ptid
);
7750 struct remote_state
*rs
= get_remote_state ();
7752 res
= remote_vkill (pid
, rs
);
7753 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7755 /* Don't try 'k' on a multi-process aware stub -- it has no way
7756 to specify the pid. */
7760 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7761 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7764 /* Don't wait for it to die. I'm not really sure it matters whether
7765 we do or not. For the existing stubs, kill is a noop. */
7771 error (_("Can't kill process"));
7773 target_mourn_inferior ();
7777 remote_mourn (struct target_ops
*ops
)
7779 remote_mourn_1 (ops
);
7782 /* Worker function for remote_mourn. */
7784 remote_mourn_1 (struct target_ops
*target
)
7786 unpush_target (target
);
7788 /* remote_close takes care of doing most of the clean up. */
7789 generic_mourn_inferior ();
7793 extended_remote_mourn_1 (struct target_ops
*target
)
7795 struct remote_state
*rs
= get_remote_state ();
7797 /* In case we got here due to an error, but we're going to stay
7799 rs
->waiting_for_stop_reply
= 0;
7801 /* If the current general thread belonged to the process we just
7802 detached from or has exited, the remote side current general
7803 thread becomes undefined. Considering a case like this:
7805 - We just got here due to a detach.
7806 - The process that we're detaching from happens to immediately
7807 report a global breakpoint being hit in non-stop mode, in the
7808 same thread we had selected before.
7809 - GDB attaches to this process again.
7810 - This event happens to be the next event we handle.
7812 GDB would consider that the current general thread didn't need to
7813 be set on the stub side (with Hg), since for all it knew,
7814 GENERAL_THREAD hadn't changed.
7816 Notice that although in all-stop mode, the remote server always
7817 sets the current thread to the thread reporting the stop event,
7818 that doesn't happen in non-stop mode; in non-stop, the stub *must
7819 not* change the current thread when reporting a breakpoint hit,
7820 due to the decoupling of event reporting and event handling.
7822 To keep things simple, we always invalidate our notion of the
7824 record_currthread (rs
, minus_one_ptid
);
7826 /* Unlike "target remote", we do not want to unpush the target; then
7827 the next time the user says "run", we won't be connected. */
7829 /* Call common code to mark the inferior as not running. */
7830 generic_mourn_inferior ();
7832 if (!have_inferiors ())
7834 if (!remote_multi_process_p (rs
))
7836 /* Check whether the target is running now - some remote stubs
7837 automatically restart after kill. */
7839 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7841 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7843 /* Assume that the target has been restarted. Set
7844 inferior_ptid so that bits of core GDB realizes
7845 there's something here, e.g., so that the user can
7846 say "kill" again. */
7847 inferior_ptid
= magic_null_ptid
;
7854 extended_remote_mourn (struct target_ops
*ops
)
7856 extended_remote_mourn_1 (ops
);
7860 extended_remote_supports_disable_randomization (struct target_ops
*self
)
7862 return packet_support (PACKET_QDisableRandomization
) == PACKET_ENABLE
;
7866 extended_remote_disable_randomization (int val
)
7868 struct remote_state
*rs
= get_remote_state ();
7871 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
7874 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7876 error (_("Target does not support QDisableRandomization."));
7877 if (strcmp (reply
, "OK") != 0)
7878 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7882 extended_remote_run (char *args
)
7884 struct remote_state
*rs
= get_remote_state ();
7887 /* If the user has disabled vRun support, or we have detected that
7888 support is not available, do not try it. */
7889 if (packet_support (PACKET_vRun
) == PACKET_DISABLE
)
7892 strcpy (rs
->buf
, "vRun;");
7893 len
= strlen (rs
->buf
);
7895 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7896 error (_("Remote file name too long for run packet"));
7897 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
,
7898 strlen (remote_exec_file
));
7900 gdb_assert (args
!= NULL
);
7903 struct cleanup
*back_to
;
7907 argv
= gdb_buildargv (args
);
7908 back_to
= make_cleanup_freeargv (argv
);
7909 for (i
= 0; argv
[i
] != NULL
; i
++)
7911 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7912 error (_("Argument list too long for run packet"));
7913 rs
->buf
[len
++] = ';';
7914 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
,
7917 do_cleanups (back_to
);
7920 rs
->buf
[len
++] = '\0';
7923 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7925 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]))
7928 /* We have a wait response. All is well. */
7930 case PACKET_UNKNOWN
:
7933 if (remote_exec_file
[0] == '\0')
7934 error (_("Running the default executable on the remote target failed; "
7935 "try \"set remote exec-file\"?"));
7937 error (_("Running \"%s\" on the remote target failed"),
7940 gdb_assert_not_reached (_("bad switch"));
7944 /* In the extended protocol we want to be able to do things like
7945 "run" and have them basically work as expected. So we need
7946 a special create_inferior function. We support changing the
7947 executable file and the command line arguments, but not the
7951 extended_remote_create_inferior (struct target_ops
*ops
,
7952 char *exec_file
, char *args
,
7953 char **env
, int from_tty
)
7957 struct remote_state
*rs
= get_remote_state ();
7959 /* If running asynchronously, register the target file descriptor
7960 with the event loop. */
7961 if (target_can_async_p ())
7962 target_async (inferior_event_handler
, 0);
7964 /* Disable address space randomization if requested (and supported). */
7965 if (extended_remote_supports_disable_randomization (ops
))
7966 extended_remote_disable_randomization (disable_randomization
);
7968 /* Now restart the remote server. */
7969 run_worked
= extended_remote_run (args
) != -1;
7972 /* vRun was not supported. Fail if we need it to do what the
7974 if (remote_exec_file
[0])
7975 error (_("Remote target does not support \"set remote exec-file\""));
7977 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7979 /* Fall back to "R". */
7980 extended_remote_restart ();
7983 if (!have_inferiors ())
7985 /* Clean up from the last time we ran, before we mark the target
7986 running again. This will mark breakpoints uninserted, and
7987 get_offsets may insert breakpoints. */
7988 init_thread_list ();
7989 init_wait_for_inferior ();
7992 /* vRun's success return is a stop reply. */
7993 stop_reply
= run_worked
? rs
->buf
: NULL
;
7994 add_current_inferior_and_thread (stop_reply
);
7996 /* Get updated offsets, if the stub uses qOffsets. */
8001 /* Given a location's target info BP_TGT and the packet buffer BUF, output
8002 the list of conditions (in agent expression bytecode format), if any, the
8003 target needs to evaluate. The output is placed into the packet buffer
8004 started from BUF and ended at BUF_END. */
8007 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
8008 struct bp_target_info
*bp_tgt
, char *buf
,
8011 struct agent_expr
*aexpr
= NULL
;
8014 char *buf_start
= buf
;
8016 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
8019 buf
+= strlen (buf
);
8020 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
8023 /* Send conditions to the target and free the vector. */
8025 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
8028 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
8029 buf
+= strlen (buf
);
8030 for (i
= 0; i
< aexpr
->len
; ++i
)
8031 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8038 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
8039 struct bp_target_info
*bp_tgt
, char *buf
)
8041 struct agent_expr
*aexpr
= NULL
;
8044 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8047 buf
+= strlen (buf
);
8049 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
8050 buf
+= strlen (buf
);
8052 /* Concatenate all the agent expressions that are commands into the
8055 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
8058 sprintf (buf
, "X%x,", aexpr
->len
);
8059 buf
+= strlen (buf
);
8060 for (i
= 0; i
< aexpr
->len
; ++i
)
8061 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8066 /* Insert a breakpoint. On targets that have software breakpoint
8067 support, we ask the remote target to do the work; on targets
8068 which don't, we insert a traditional memory breakpoint. */
8071 remote_insert_breakpoint (struct target_ops
*ops
,
8072 struct gdbarch
*gdbarch
,
8073 struct bp_target_info
*bp_tgt
)
8075 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
8076 If it succeeds, then set the support to PACKET_ENABLE. If it
8077 fails, and the user has explicitly requested the Z support then
8078 report an error, otherwise, mark it disabled and go on. */
8080 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
8082 CORE_ADDR addr
= bp_tgt
->placed_address
;
8083 struct remote_state
*rs
;
8086 struct condition_list
*cond
= NULL
;
8088 /* Make sure the remote is pointing at the right process, if
8090 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8091 set_general_process ();
8093 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
8095 rs
= get_remote_state ();
8097 endbuf
= rs
->buf
+ get_remote_packet_size ();
8102 addr
= (ULONGEST
) remote_address_masked (addr
);
8103 p
+= hexnumstr (p
, addr
);
8104 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
8106 if (remote_supports_cond_breakpoints (ops
))
8107 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8109 if (remote_can_run_breakpoint_commands (ops
))
8110 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8113 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8115 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
8120 bp_tgt
->placed_address
= addr
;
8121 bp_tgt
->placed_size
= bpsize
;
8123 case PACKET_UNKNOWN
:
8128 /* If this breakpoint has target-side commands but this stub doesn't
8129 support Z0 packets, throw error. */
8130 if (!VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8131 throw_error (NOT_SUPPORTED_ERROR
, _("\
8132 Target doesn't support breakpoints that have target side commands."));
8134 return memory_insert_breakpoint (ops
, gdbarch
, bp_tgt
);
8138 remote_remove_breakpoint (struct target_ops
*ops
,
8139 struct gdbarch
*gdbarch
,
8140 struct bp_target_info
*bp_tgt
)
8142 CORE_ADDR addr
= bp_tgt
->placed_address
;
8143 struct remote_state
*rs
= get_remote_state ();
8145 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
8148 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8150 /* Make sure the remote is pointing at the right process, if
8152 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8153 set_general_process ();
8159 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8160 p
+= hexnumstr (p
, addr
);
8161 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8164 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8166 return (rs
->buf
[0] == 'E');
8169 return memory_remove_breakpoint (ops
, gdbarch
, bp_tgt
);
8173 watchpoint_to_Z_packet (int type
)
8178 return Z_PACKET_WRITE_WP
;
8181 return Z_PACKET_READ_WP
;
8184 return Z_PACKET_ACCESS_WP
;
8187 internal_error (__FILE__
, __LINE__
,
8188 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8193 remote_insert_watchpoint (struct target_ops
*self
,
8194 CORE_ADDR addr
, int len
, int type
,
8195 struct expression
*cond
)
8197 struct remote_state
*rs
= get_remote_state ();
8198 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8200 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8202 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
8205 /* Make sure the remote is pointing at the right process, if
8207 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8208 set_general_process ();
8210 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8211 p
= strchr (rs
->buf
, '\0');
8212 addr
= remote_address_masked (addr
);
8213 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8214 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8217 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8219 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8223 case PACKET_UNKNOWN
:
8228 internal_error (__FILE__
, __LINE__
,
8229 _("remote_insert_watchpoint: reached end of function"));
8233 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8234 CORE_ADDR start
, int length
)
8236 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8238 return diff
< length
;
8243 remote_remove_watchpoint (struct target_ops
*self
,
8244 CORE_ADDR addr
, int len
, int type
,
8245 struct expression
*cond
)
8247 struct remote_state
*rs
= get_remote_state ();
8248 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8250 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8252 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
8255 /* Make sure the remote is pointing at the right process, if
8257 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8258 set_general_process ();
8260 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8261 p
= strchr (rs
->buf
, '\0');
8262 addr
= remote_address_masked (addr
);
8263 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8264 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8266 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8268 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8271 case PACKET_UNKNOWN
:
8276 internal_error (__FILE__
, __LINE__
,
8277 _("remote_remove_watchpoint: reached end of function"));
8281 int remote_hw_watchpoint_limit
= -1;
8282 int remote_hw_watchpoint_length_limit
= -1;
8283 int remote_hw_breakpoint_limit
= -1;
8286 remote_region_ok_for_hw_watchpoint (struct target_ops
*self
,
8287 CORE_ADDR addr
, int len
)
8289 if (remote_hw_watchpoint_length_limit
== 0)
8291 else if (remote_hw_watchpoint_length_limit
< 0)
8293 else if (len
<= remote_hw_watchpoint_length_limit
)
8300 remote_check_watch_resources (struct target_ops
*self
,
8301 int type
, int cnt
, int ot
)
8303 if (type
== bp_hardware_breakpoint
)
8305 if (remote_hw_breakpoint_limit
== 0)
8307 else if (remote_hw_breakpoint_limit
< 0)
8309 else if (cnt
<= remote_hw_breakpoint_limit
)
8314 if (remote_hw_watchpoint_limit
== 0)
8316 else if (remote_hw_watchpoint_limit
< 0)
8320 else if (cnt
<= remote_hw_watchpoint_limit
)
8327 remote_stopped_by_watchpoint (struct target_ops
*ops
)
8329 struct remote_state
*rs
= get_remote_state ();
8331 return rs
->remote_stopped_by_watchpoint_p
;
8335 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8337 struct remote_state
*rs
= get_remote_state ();
8340 if (remote_stopped_by_watchpoint (target
))
8342 *addr_p
= rs
->remote_watch_data_address
;
8351 remote_insert_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
8352 struct bp_target_info
*bp_tgt
)
8355 struct remote_state
*rs
;
8359 /* The length field should be set to the size of a breakpoint
8360 instruction, even though we aren't inserting one ourselves. */
8362 gdbarch_remote_breakpoint_from_pc
8363 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
8365 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
8368 /* Make sure the remote is pointing at the right process, if
8370 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8371 set_general_process ();
8373 rs
= get_remote_state ();
8375 endbuf
= rs
->buf
+ get_remote_packet_size ();
8381 addr
= remote_address_masked (bp_tgt
->placed_address
);
8382 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8383 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8385 if (remote_supports_cond_breakpoints (self
))
8386 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8388 if (remote_can_run_breakpoint_commands (self
))
8389 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8392 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8394 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8397 if (rs
->buf
[1] == '.')
8399 message
= strchr (rs
->buf
+ 2, '.');
8401 error (_("Remote failure reply: %s"), message
+ 1);
8404 case PACKET_UNKNOWN
:
8409 internal_error (__FILE__
, __LINE__
,
8410 _("remote_insert_hw_breakpoint: reached end of function"));
8415 remote_remove_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
8416 struct bp_target_info
*bp_tgt
)
8419 struct remote_state
*rs
= get_remote_state ();
8421 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8423 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
8426 /* Make sure the remote is pointing at the right process, if
8428 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8429 set_general_process ();
8435 addr
= remote_address_masked (bp_tgt
->placed_address
);
8436 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8437 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8440 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8442 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8445 case PACKET_UNKNOWN
:
8450 internal_error (__FILE__
, __LINE__
,
8451 _("remote_remove_hw_breakpoint: reached end of function"));
8454 /* Verify memory using the "qCRC:" request. */
8457 remote_verify_memory (struct target_ops
*ops
,
8458 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8460 struct remote_state
*rs
= get_remote_state ();
8461 unsigned long host_crc
, target_crc
;
8464 /* It doesn't make sense to use qCRC if the remote target is
8465 connected but not running. */
8466 if (target_has_execution
&& packet_support (PACKET_qCRC
) != PACKET_DISABLE
)
8468 enum packet_result result
;
8470 /* Make sure the remote is pointing at the right process. */
8471 set_general_process ();
8473 /* FIXME: assumes lma can fit into long. */
8474 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8475 (long) lma
, (long) size
);
8478 /* Be clever; compute the host_crc before waiting for target
8480 host_crc
= xcrc32 (data
, size
, 0xffffffff);
8482 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8484 result
= packet_ok (rs
->buf
,
8485 &remote_protocol_packets
[PACKET_qCRC
]);
8486 if (result
== PACKET_ERROR
)
8488 else if (result
== PACKET_OK
)
8490 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8491 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8493 return (host_crc
== target_crc
);
8497 return simple_verify_memory (ops
, data
, lma
, size
);
8500 /* compare-sections command
8502 With no arguments, compares each loadable section in the exec bfd
8503 with the same memory range on the target, and reports mismatches.
8504 Useful for verifying the image on the target against the exec file. */
8507 compare_sections_command (char *args
, int from_tty
)
8510 struct cleanup
*old_chain
;
8512 const char *sectname
;
8521 error (_("command cannot be used without an exec file"));
8523 /* Make sure the remote is pointing at the right process. */
8524 set_general_process ();
8526 if (args
!= NULL
&& strcmp (args
, "-r") == 0)
8532 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8534 if (!(s
->flags
& SEC_LOAD
))
8535 continue; /* Skip non-loadable section. */
8537 if (read_only
&& (s
->flags
& SEC_READONLY
) == 0)
8538 continue; /* Skip writeable sections */
8540 size
= bfd_get_section_size (s
);
8542 continue; /* Skip zero-length section. */
8544 sectname
= bfd_get_section_name (exec_bfd
, s
);
8545 if (args
&& strcmp (args
, sectname
) != 0)
8546 continue; /* Not the section selected by user. */
8548 matched
= 1; /* Do this section. */
8551 sectdata
= xmalloc (size
);
8552 old_chain
= make_cleanup (xfree
, sectdata
);
8553 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8555 res
= target_verify_memory (sectdata
, lma
, size
);
8558 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8559 paddress (target_gdbarch (), lma
),
8560 paddress (target_gdbarch (), lma
+ size
));
8562 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8563 paddress (target_gdbarch (), lma
),
8564 paddress (target_gdbarch (), lma
+ size
));
8566 printf_filtered ("matched.\n");
8569 printf_filtered ("MIS-MATCHED!\n");
8573 do_cleanups (old_chain
);
8576 warning (_("One or more sections of the target image does not match\n\
8577 the loaded file\n"));
8578 if (args
&& !matched
)
8579 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8582 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8583 into remote target. The number of bytes written to the remote
8584 target is returned, or -1 for error. */
8586 static enum target_xfer_status
8587 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8588 const char *annex
, const gdb_byte
*writebuf
,
8589 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
,
8590 struct packet_config
*packet
)
8594 struct remote_state
*rs
= get_remote_state ();
8595 int max_size
= get_memory_write_packet_size ();
8597 if (packet
->support
== PACKET_DISABLE
)
8598 return TARGET_XFER_E_IO
;
8600 /* Insert header. */
8601 i
= snprintf (rs
->buf
, max_size
,
8602 "qXfer:%s:write:%s:%s:",
8603 object_name
, annex
? annex
: "",
8604 phex_nz (offset
, sizeof offset
));
8605 max_size
-= (i
+ 1);
8607 /* Escape as much data as fits into rs->buf. */
8608 buf_len
= remote_escape_output
8609 (writebuf
, len
, (gdb_byte
*) rs
->buf
+ i
, &max_size
, max_size
);
8611 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8612 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8613 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8614 return TARGET_XFER_E_IO
;
8616 unpack_varlen_hex (rs
->buf
, &n
);
8619 return TARGET_XFER_OK
;
8622 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8623 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8624 number of bytes read is returned, or 0 for EOF, or -1 for error.
8625 The number of bytes read may be less than LEN without indicating an
8626 EOF. PACKET is checked and updated to indicate whether the remote
8627 target supports this object. */
8629 static enum target_xfer_status
8630 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8632 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8633 ULONGEST
*xfered_len
,
8634 struct packet_config
*packet
)
8636 struct remote_state
*rs
= get_remote_state ();
8637 LONGEST i
, n
, packet_len
;
8639 if (packet
->support
== PACKET_DISABLE
)
8640 return TARGET_XFER_E_IO
;
8642 /* Check whether we've cached an end-of-object packet that matches
8644 if (rs
->finished_object
)
8646 if (strcmp (object_name
, rs
->finished_object
) == 0
8647 && strcmp (annex
? annex
: "", rs
->finished_annex
) == 0
8648 && offset
== rs
->finished_offset
)
8649 return TARGET_XFER_EOF
;
8652 /* Otherwise, we're now reading something different. Discard
8654 xfree (rs
->finished_object
);
8655 xfree (rs
->finished_annex
);
8656 rs
->finished_object
= NULL
;
8657 rs
->finished_annex
= NULL
;
8660 /* Request only enough to fit in a single packet. The actual data
8661 may not, since we don't know how much of it will need to be escaped;
8662 the target is free to respond with slightly less data. We subtract
8663 five to account for the response type and the protocol frame. */
8664 n
= min (get_remote_packet_size () - 5, len
);
8665 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8666 object_name
, annex
? annex
: "",
8667 phex_nz (offset
, sizeof offset
),
8668 phex_nz (n
, sizeof n
));
8669 i
= putpkt (rs
->buf
);
8671 return TARGET_XFER_E_IO
;
8674 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8675 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8676 return TARGET_XFER_E_IO
;
8678 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8679 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8681 /* 'm' means there is (or at least might be) more data after this
8682 batch. That does not make sense unless there's at least one byte
8683 of data in this reply. */
8684 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8685 error (_("Remote qXfer reply contained no data."));
8687 /* Got some data. */
8688 i
= remote_unescape_input ((gdb_byte
*) rs
->buf
+ 1,
8689 packet_len
- 1, readbuf
, n
);
8691 /* 'l' is an EOF marker, possibly including a final block of data,
8692 or possibly empty. If we have the final block of a non-empty
8693 object, record this fact to bypass a subsequent partial read. */
8694 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8696 rs
->finished_object
= xstrdup (object_name
);
8697 rs
->finished_annex
= xstrdup (annex
? annex
: "");
8698 rs
->finished_offset
= offset
+ i
;
8702 return TARGET_XFER_EOF
;
8706 return TARGET_XFER_OK
;
8710 static enum target_xfer_status
8711 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8712 const char *annex
, gdb_byte
*readbuf
,
8713 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
8714 ULONGEST
*xfered_len
)
8716 struct remote_state
*rs
;
8721 set_remote_traceframe ();
8722 set_general_thread (inferior_ptid
);
8724 rs
= get_remote_state ();
8726 /* Handle memory using the standard memory routines. */
8727 if (object
== TARGET_OBJECT_MEMORY
)
8729 /* If the remote target is connected but not running, we should
8730 pass this request down to a lower stratum (e.g. the executable
8732 if (!target_has_execution
)
8733 return TARGET_XFER_EOF
;
8735 if (writebuf
!= NULL
)
8736 return remote_write_bytes (offset
, writebuf
, len
, xfered_len
);
8738 return remote_read_bytes (ops
, offset
, readbuf
, len
, xfered_len
);
8741 /* Handle SPU memory using qxfer packets. */
8742 if (object
== TARGET_OBJECT_SPU
)
8745 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8746 xfered_len
, &remote_protocol_packets
8747 [PACKET_qXfer_spu_read
]);
8749 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8750 xfered_len
, &remote_protocol_packets
8751 [PACKET_qXfer_spu_write
]);
8754 /* Handle extra signal info using qxfer packets. */
8755 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8758 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8759 xfered_len
, &remote_protocol_packets
8760 [PACKET_qXfer_siginfo_read
]);
8762 return remote_write_qxfer (ops
, "siginfo", annex
,
8763 writebuf
, offset
, len
, xfered_len
,
8764 &remote_protocol_packets
8765 [PACKET_qXfer_siginfo_write
]);
8768 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8771 return remote_read_qxfer (ops
, "statictrace", annex
,
8772 readbuf
, offset
, len
, xfered_len
,
8773 &remote_protocol_packets
8774 [PACKET_qXfer_statictrace_read
]);
8776 return TARGET_XFER_E_IO
;
8779 /* Only handle flash writes. */
8780 if (writebuf
!= NULL
)
8786 case TARGET_OBJECT_FLASH
:
8787 return remote_flash_write (ops
, offset
, len
, xfered_len
,
8791 return TARGET_XFER_E_IO
;
8795 /* Map pre-existing objects onto letters. DO NOT do this for new
8796 objects!!! Instead specify new query packets. */
8799 case TARGET_OBJECT_AVR
:
8803 case TARGET_OBJECT_AUXV
:
8804 gdb_assert (annex
== NULL
);
8805 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8807 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8809 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8810 return remote_read_qxfer
8811 (ops
, "features", annex
, readbuf
, offset
, len
, xfered_len
,
8812 &remote_protocol_packets
[PACKET_qXfer_features
]);
8814 case TARGET_OBJECT_LIBRARIES
:
8815 return remote_read_qxfer
8816 (ops
, "libraries", annex
, readbuf
, offset
, len
, xfered_len
,
8817 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8819 case TARGET_OBJECT_LIBRARIES_SVR4
:
8820 return remote_read_qxfer
8821 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
, xfered_len
,
8822 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8824 case TARGET_OBJECT_MEMORY_MAP
:
8825 gdb_assert (annex
== NULL
);
8826 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8828 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8830 case TARGET_OBJECT_OSDATA
:
8831 /* Should only get here if we're connected. */
8832 gdb_assert (rs
->remote_desc
);
8833 return remote_read_qxfer
8834 (ops
, "osdata", annex
, readbuf
, offset
, len
, xfered_len
,
8835 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8837 case TARGET_OBJECT_THREADS
:
8838 gdb_assert (annex
== NULL
);
8839 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8841 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8843 case TARGET_OBJECT_TRACEFRAME_INFO
:
8844 gdb_assert (annex
== NULL
);
8845 return remote_read_qxfer
8846 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
, xfered_len
,
8847 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8849 case TARGET_OBJECT_FDPIC
:
8850 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8852 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8854 case TARGET_OBJECT_OPENVMS_UIB
:
8855 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
8857 &remote_protocol_packets
[PACKET_qXfer_uib
]);
8859 case TARGET_OBJECT_BTRACE
:
8860 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
8862 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
8865 return TARGET_XFER_E_IO
;
8868 /* Note: a zero OFFSET and LEN can be used to query the minimum
8870 if (offset
== 0 && len
== 0)
8871 return (get_remote_packet_size ());
8872 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8873 large enough let the caller deal with it. */
8874 if (len
< get_remote_packet_size ())
8875 return TARGET_XFER_E_IO
;
8876 len
= get_remote_packet_size ();
8878 /* Except for querying the minimum buffer size, target must be open. */
8879 if (!rs
->remote_desc
)
8880 error (_("remote query is only available after target open"));
8882 gdb_assert (annex
!= NULL
);
8883 gdb_assert (readbuf
!= NULL
);
8889 /* We used one buffer char for the remote protocol q command and
8890 another for the query type. As the remote protocol encapsulation
8891 uses 4 chars plus one extra in case we are debugging
8892 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8895 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8897 /* Bad caller may have sent forbidden characters. */
8898 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8903 gdb_assert (annex
[i
] == '\0');
8905 i
= putpkt (rs
->buf
);
8907 return TARGET_XFER_E_IO
;
8909 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8910 strcpy ((char *) readbuf
, rs
->buf
);
8912 *xfered_len
= strlen ((char *) readbuf
);
8913 return TARGET_XFER_OK
;
8917 remote_search_memory (struct target_ops
* ops
,
8918 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8919 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8920 CORE_ADDR
*found_addrp
)
8922 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
8923 struct remote_state
*rs
= get_remote_state ();
8924 int max_size
= get_memory_write_packet_size ();
8925 struct packet_config
*packet
=
8926 &remote_protocol_packets
[PACKET_qSearch_memory
];
8927 /* Number of packet bytes used to encode the pattern;
8928 this could be more than PATTERN_LEN due to escape characters. */
8929 int escaped_pattern_len
;
8930 /* Amount of pattern that was encodable in the packet. */
8931 int used_pattern_len
;
8934 ULONGEST found_addr
;
8936 /* Don't go to the target if we don't have to.
8937 This is done before checking packet->support to avoid the possibility that
8938 a success for this edge case means the facility works in general. */
8939 if (pattern_len
> search_space_len
)
8941 if (pattern_len
== 0)
8943 *found_addrp
= start_addr
;
8947 /* If we already know the packet isn't supported, fall back to the simple
8948 way of searching memory. */
8950 if (packet_config_support (packet
) == PACKET_DISABLE
)
8952 /* Target doesn't provided special support, fall back and use the
8953 standard support (copy memory and do the search here). */
8954 return simple_search_memory (ops
, start_addr
, search_space_len
,
8955 pattern
, pattern_len
, found_addrp
);
8958 /* Make sure the remote is pointing at the right process. */
8959 set_general_process ();
8961 /* Insert header. */
8962 i
= snprintf (rs
->buf
, max_size
,
8963 "qSearch:memory:%s;%s;",
8964 phex_nz (start_addr
, addr_size
),
8965 phex_nz (search_space_len
, sizeof (search_space_len
)));
8966 max_size
-= (i
+ 1);
8968 /* Escape as much data as fits into rs->buf. */
8969 escaped_pattern_len
=
8970 remote_escape_output (pattern
, pattern_len
, (gdb_byte
*) rs
->buf
+ i
,
8971 &used_pattern_len
, max_size
);
8973 /* Bail if the pattern is too large. */
8974 if (used_pattern_len
!= pattern_len
)
8975 error (_("Pattern is too large to transmit to remote target."));
8977 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8978 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8979 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8981 /* The request may not have worked because the command is not
8982 supported. If so, fall back to the simple way. */
8983 if (packet
->support
== PACKET_DISABLE
)
8985 return simple_search_memory (ops
, start_addr
, search_space_len
,
8986 pattern
, pattern_len
, found_addrp
);
8991 if (rs
->buf
[0] == '0')
8993 else if (rs
->buf
[0] == '1')
8996 if (rs
->buf
[1] != ',')
8997 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8998 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8999 *found_addrp
= found_addr
;
9002 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
9008 remote_rcmd (struct target_ops
*self
, const char *command
,
9009 struct ui_file
*outbuf
)
9011 struct remote_state
*rs
= get_remote_state ();
9014 if (!rs
->remote_desc
)
9015 error (_("remote rcmd is only available after target open"));
9017 /* Send a NULL command across as an empty command. */
9018 if (command
== NULL
)
9021 /* The query prefix. */
9022 strcpy (rs
->buf
, "qRcmd,");
9023 p
= strchr (rs
->buf
, '\0');
9025 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
9026 > get_remote_packet_size ())
9027 error (_("\"monitor\" command ``%s'' is too long."), command
);
9029 /* Encode the actual command. */
9030 bin2hex ((const gdb_byte
*) command
, p
, strlen (command
));
9032 if (putpkt (rs
->buf
) < 0)
9033 error (_("Communication problem with target."));
9035 /* get/display the response */
9040 /* XXX - see also remote_get_noisy_reply(). */
9041 QUIT
; /* Allow user to bail out with ^C. */
9043 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
9045 /* Timeout. Continue to (try to) read responses.
9046 This is better than stopping with an error, assuming the stub
9047 is still executing the (long) monitor command.
9048 If needed, the user can interrupt gdb using C-c, obtaining
9049 an effect similar to stop on timeout. */
9054 error (_("Target does not support this command."));
9055 if (buf
[0] == 'O' && buf
[1] != 'K')
9057 remote_console_output (buf
+ 1); /* 'O' message from stub. */
9060 if (strcmp (buf
, "OK") == 0)
9062 if (strlen (buf
) == 3 && buf
[0] == 'E'
9063 && isdigit (buf
[1]) && isdigit (buf
[2]))
9065 error (_("Protocol error with Rcmd"));
9067 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
9069 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
9071 fputc_unfiltered (c
, outbuf
);
9077 static VEC(mem_region_s
) *
9078 remote_memory_map (struct target_ops
*ops
)
9080 VEC(mem_region_s
) *result
= NULL
;
9081 char *text
= target_read_stralloc (¤t_target
,
9082 TARGET_OBJECT_MEMORY_MAP
, NULL
);
9086 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
9088 result
= parse_memory_map (text
);
9089 do_cleanups (back_to
);
9096 packet_command (char *args
, int from_tty
)
9098 struct remote_state
*rs
= get_remote_state ();
9100 if (!rs
->remote_desc
)
9101 error (_("command can only be used with remote target"));
9104 error (_("remote-packet command requires packet text as argument"));
9106 puts_filtered ("sending: ");
9107 print_packet (args
);
9108 puts_filtered ("\n");
9111 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9112 puts_filtered ("received: ");
9113 print_packet (rs
->buf
);
9114 puts_filtered ("\n");
9118 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
9120 static void display_thread_info (struct gdb_ext_thread_info
*info
);
9122 static void threadset_test_cmd (char *cmd
, int tty
);
9124 static void threadalive_test (char *cmd
, int tty
);
9126 static void threadlist_test_cmd (char *cmd
, int tty
);
9128 int get_and_display_threadinfo (threadref
*ref
);
9130 static void threadinfo_test_cmd (char *cmd
, int tty
);
9132 static int thread_display_step (threadref
*ref
, void *context
);
9134 static void threadlist_update_test_cmd (char *cmd
, int tty
);
9136 static void init_remote_threadtests (void);
9138 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
9141 threadset_test_cmd (char *cmd
, int tty
)
9143 int sample_thread
= SAMPLE_THREAD
;
9145 printf_filtered (_("Remote threadset test\n"));
9146 set_general_thread (sample_thread
);
9151 threadalive_test (char *cmd
, int tty
)
9153 int sample_thread
= SAMPLE_THREAD
;
9154 int pid
= ptid_get_pid (inferior_ptid
);
9155 ptid_t ptid
= ptid_build (pid
, sample_thread
, 0);
9157 if (remote_thread_alive (ptid
))
9158 printf_filtered ("PASS: Thread alive test\n");
9160 printf_filtered ("FAIL: Thread alive test\n");
9163 void output_threadid (char *title
, threadref
*ref
);
9166 output_threadid (char *title
, threadref
*ref
)
9170 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
9172 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
9176 threadlist_test_cmd (char *cmd
, int tty
)
9179 threadref nextthread
;
9180 int done
, result_count
;
9181 threadref threadlist
[3];
9183 printf_filtered ("Remote Threadlist test\n");
9184 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
9185 &result_count
, &threadlist
[0]))
9186 printf_filtered ("FAIL: threadlist test\n");
9189 threadref
*scan
= threadlist
;
9190 threadref
*limit
= scan
+ result_count
;
9192 while (scan
< limit
)
9193 output_threadid (" thread ", scan
++);
9198 display_thread_info (struct gdb_ext_thread_info
*info
)
9200 output_threadid ("Threadid: ", &info
->threadid
);
9201 printf_filtered ("Name: %s\n ", info
->shortname
);
9202 printf_filtered ("State: %s\n", info
->display
);
9203 printf_filtered ("other: %s\n\n", info
->more_display
);
9207 get_and_display_threadinfo (threadref
*ref
)
9211 struct gdb_ext_thread_info threadinfo
;
9213 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9214 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9215 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9216 display_thread_info (&threadinfo
);
9221 threadinfo_test_cmd (char *cmd
, int tty
)
9223 int athread
= SAMPLE_THREAD
;
9227 int_to_threadref (&thread
, athread
);
9228 printf_filtered ("Remote Threadinfo test\n");
9229 if (!get_and_display_threadinfo (&thread
))
9230 printf_filtered ("FAIL cannot get thread info\n");
9234 thread_display_step (threadref
*ref
, void *context
)
9236 /* output_threadid(" threadstep ",ref); *//* simple test */
9237 return get_and_display_threadinfo (ref
);
9241 threadlist_update_test_cmd (char *cmd
, int tty
)
9243 printf_filtered ("Remote Threadlist update test\n");
9244 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9248 init_remote_threadtests (void)
9250 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9251 _("Fetch and print the remote list of "
9252 "thread identifiers, one pkt only"));
9253 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9254 _("Fetch and display info about one thread"));
9255 add_com ("tset", class_obscure
, threadset_test_cmd
,
9256 _("Test setting to a different thread"));
9257 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9258 _("Iterate through updating all remote thread info"));
9259 add_com ("talive", class_obscure
, threadalive_test
,
9260 _(" Remote thread alive test "));
9265 /* Convert a thread ID to a string. Returns the string in a static
9269 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9271 static char buf
[64];
9272 struct remote_state
*rs
= get_remote_state ();
9274 if (ptid_equal (ptid
, null_ptid
))
9275 return normal_pid_to_str (ptid
);
9276 else if (ptid_is_pid (ptid
))
9278 /* Printing an inferior target id. */
9280 /* When multi-process extensions are off, there's no way in the
9281 remote protocol to know the remote process id, if there's any
9282 at all. There's one exception --- when we're connected with
9283 target extended-remote, and we manually attached to a process
9284 with "attach PID". We don't record anywhere a flag that
9285 allows us to distinguish that case from the case of
9286 connecting with extended-remote and the stub already being
9287 attached to a process, and reporting yes to qAttached, hence
9288 no smart special casing here. */
9289 if (!remote_multi_process_p (rs
))
9291 xsnprintf (buf
, sizeof buf
, "Remote target");
9295 return normal_pid_to_str (ptid
);
9299 if (ptid_equal (magic_null_ptid
, ptid
))
9300 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9301 else if (rs
->extended
&& remote_multi_process_p (rs
))
9302 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9303 ptid_get_pid (ptid
), ptid_get_lwp (ptid
));
9305 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9306 ptid_get_lwp (ptid
));
9311 /* Get the address of the thread local variable in OBJFILE which is
9312 stored at OFFSET within the thread local storage for thread PTID. */
9315 remote_get_thread_local_address (struct target_ops
*ops
,
9316 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9318 if (packet_support (PACKET_qGetTLSAddr
) != PACKET_DISABLE
)
9320 struct remote_state
*rs
= get_remote_state ();
9322 char *endp
= rs
->buf
+ get_remote_packet_size ();
9323 enum packet_result result
;
9325 strcpy (p
, "qGetTLSAddr:");
9327 p
= write_ptid (p
, endp
, ptid
);
9329 p
+= hexnumstr (p
, offset
);
9331 p
+= hexnumstr (p
, lm
);
9335 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9336 result
= packet_ok (rs
->buf
,
9337 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9338 if (result
== PACKET_OK
)
9342 unpack_varlen_hex (rs
->buf
, &result
);
9345 else if (result
== PACKET_UNKNOWN
)
9346 throw_error (TLS_GENERIC_ERROR
,
9347 _("Remote target doesn't support qGetTLSAddr packet"));
9349 throw_error (TLS_GENERIC_ERROR
,
9350 _("Remote target failed to process qGetTLSAddr request"));
9353 throw_error (TLS_GENERIC_ERROR
,
9354 _("TLS not supported or disabled on this target"));
9359 /* Provide thread local base, i.e. Thread Information Block address.
9360 Returns 1 if ptid is found and thread_local_base is non zero. */
9363 remote_get_tib_address (struct target_ops
*self
, ptid_t ptid
, CORE_ADDR
*addr
)
9365 if (packet_support (PACKET_qGetTIBAddr
) != PACKET_DISABLE
)
9367 struct remote_state
*rs
= get_remote_state ();
9369 char *endp
= rs
->buf
+ get_remote_packet_size ();
9370 enum packet_result result
;
9372 strcpy (p
, "qGetTIBAddr:");
9374 p
= write_ptid (p
, endp
, ptid
);
9378 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9379 result
= packet_ok (rs
->buf
,
9380 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9381 if (result
== PACKET_OK
)
9385 unpack_varlen_hex (rs
->buf
, &result
);
9387 *addr
= (CORE_ADDR
) result
;
9390 else if (result
== PACKET_UNKNOWN
)
9391 error (_("Remote target doesn't support qGetTIBAddr packet"));
9393 error (_("Remote target failed to process qGetTIBAddr request"));
9396 error (_("qGetTIBAddr not supported or disabled on this target"));
9401 /* Support for inferring a target description based on the current
9402 architecture and the size of a 'g' packet. While the 'g' packet
9403 can have any size (since optional registers can be left off the
9404 end), some sizes are easily recognizable given knowledge of the
9405 approximate architecture. */
9407 struct remote_g_packet_guess
9410 const struct target_desc
*tdesc
;
9412 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9413 DEF_VEC_O(remote_g_packet_guess_s
);
9415 struct remote_g_packet_data
9417 VEC(remote_g_packet_guess_s
) *guesses
;
9420 static struct gdbarch_data
*remote_g_packet_data_handle
;
9423 remote_g_packet_data_init (struct obstack
*obstack
)
9425 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9429 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9430 const struct target_desc
*tdesc
)
9432 struct remote_g_packet_data
*data
9433 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9434 struct remote_g_packet_guess new_guess
, *guess
;
9437 gdb_assert (tdesc
!= NULL
);
9440 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9442 if (guess
->bytes
== bytes
)
9443 internal_error (__FILE__
, __LINE__
,
9444 _("Duplicate g packet description added for size %d"),
9447 new_guess
.bytes
= bytes
;
9448 new_guess
.tdesc
= tdesc
;
9449 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9452 /* Return 1 if remote_read_description would do anything on this target
9453 and architecture, 0 otherwise. */
9456 remote_read_description_p (struct target_ops
*target
)
9458 struct remote_g_packet_data
*data
9459 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9461 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9467 static const struct target_desc
*
9468 remote_read_description (struct target_ops
*target
)
9470 struct remote_g_packet_data
*data
9471 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9473 /* Do not try this during initial connection, when we do not know
9474 whether there is a running but stopped thread. */
9475 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9476 return target
->beneath
->to_read_description (target
->beneath
);
9478 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9480 struct remote_g_packet_guess
*guess
;
9482 int bytes
= send_g_packet ();
9485 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9487 if (guess
->bytes
== bytes
)
9488 return guess
->tdesc
;
9490 /* We discard the g packet. A minor optimization would be to
9491 hold on to it, and fill the register cache once we have selected
9492 an architecture, but it's too tricky to do safely. */
9495 return target
->beneath
->to_read_description (target
->beneath
);
9498 /* Remote file transfer support. This is host-initiated I/O, not
9499 target-initiated; for target-initiated, see remote-fileio.c. */
9501 /* If *LEFT is at least the length of STRING, copy STRING to
9502 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9503 decrease *LEFT. Otherwise raise an error. */
9506 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9508 int len
= strlen (string
);
9511 error (_("Packet too long for target."));
9513 memcpy (*buffer
, string
, len
);
9517 /* NUL-terminate the buffer as a convenience, if there is
9523 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9524 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9525 decrease *LEFT. Otherwise raise an error. */
9528 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9531 if (2 * len
> *left
)
9532 error (_("Packet too long for target."));
9534 bin2hex (bytes
, *buffer
, len
);
9538 /* NUL-terminate the buffer as a convenience, if there is
9544 /* If *LEFT is large enough, convert VALUE to hex and add it to
9545 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9546 decrease *LEFT. Otherwise raise an error. */
9549 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9551 int len
= hexnumlen (value
);
9554 error (_("Packet too long for target."));
9556 hexnumstr (*buffer
, value
);
9560 /* NUL-terminate the buffer as a convenience, if there is
9566 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9567 value, *REMOTE_ERRNO to the remote error number or zero if none
9568 was included, and *ATTACHMENT to point to the start of the annex
9569 if any. The length of the packet isn't needed here; there may
9570 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9572 Return 0 if the packet could be parsed, -1 if it could not. If
9573 -1 is returned, the other variables may not be initialized. */
9576 remote_hostio_parse_result (char *buffer
, int *retcode
,
9577 int *remote_errno
, char **attachment
)
9584 if (buffer
[0] != 'F')
9588 *retcode
= strtol (&buffer
[1], &p
, 16);
9589 if (errno
!= 0 || p
== &buffer
[1])
9592 /* Check for ",errno". */
9596 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9597 if (errno
!= 0 || p
+ 1 == p2
)
9602 /* Check for ";attachment". If there is no attachment, the
9603 packet should end here. */
9606 *attachment
= p
+ 1;
9609 else if (*p
== '\0')
9615 /* Send a prepared I/O packet to the target and read its response.
9616 The prepared packet is in the global RS->BUF before this function
9617 is called, and the answer is there when we return.
9619 COMMAND_BYTES is the length of the request to send, which may include
9620 binary data. WHICH_PACKET is the packet configuration to check
9621 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9622 is set to the error number and -1 is returned. Otherwise the value
9623 returned by the function is returned.
9625 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9626 attachment is expected; an error will be reported if there's a
9627 mismatch. If one is found, *ATTACHMENT will be set to point into
9628 the packet buffer and *ATTACHMENT_LEN will be set to the
9629 attachment's length. */
9632 remote_hostio_send_command (int command_bytes
, int which_packet
,
9633 int *remote_errno
, char **attachment
,
9634 int *attachment_len
)
9636 struct remote_state
*rs
= get_remote_state ();
9637 int ret
, bytes_read
;
9638 char *attachment_tmp
;
9640 if (!rs
->remote_desc
9641 || packet_support (which_packet
) == PACKET_DISABLE
)
9643 *remote_errno
= FILEIO_ENOSYS
;
9647 putpkt_binary (rs
->buf
, command_bytes
);
9648 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9650 /* If it timed out, something is wrong. Don't try to parse the
9654 *remote_errno
= FILEIO_EINVAL
;
9658 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9661 *remote_errno
= FILEIO_EINVAL
;
9663 case PACKET_UNKNOWN
:
9664 *remote_errno
= FILEIO_ENOSYS
;
9670 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9673 *remote_errno
= FILEIO_EINVAL
;
9677 /* Make sure we saw an attachment if and only if we expected one. */
9678 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9679 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9681 *remote_errno
= FILEIO_EINVAL
;
9685 /* If an attachment was found, it must point into the packet buffer;
9686 work out how many bytes there were. */
9687 if (attachment_tmp
!= NULL
)
9689 *attachment
= attachment_tmp
;
9690 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9696 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9697 remote file descriptor, or -1 if an error occurs (and set
9701 remote_hostio_open (struct target_ops
*self
,
9702 const char *filename
, int flags
, int mode
,
9705 struct remote_state
*rs
= get_remote_state ();
9707 int left
= get_remote_packet_size () - 1;
9709 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9711 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9713 remote_buffer_add_string (&p
, &left
, ",");
9715 remote_buffer_add_int (&p
, &left
, flags
);
9716 remote_buffer_add_string (&p
, &left
, ",");
9718 remote_buffer_add_int (&p
, &left
, mode
);
9720 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9721 remote_errno
, NULL
, NULL
);
9724 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9725 Return the number of bytes written, or -1 if an error occurs (and
9726 set *REMOTE_ERRNO). */
9729 remote_hostio_pwrite (struct target_ops
*self
,
9730 int fd
, const gdb_byte
*write_buf
, int len
,
9731 ULONGEST offset
, int *remote_errno
)
9733 struct remote_state
*rs
= get_remote_state ();
9735 int left
= get_remote_packet_size ();
9738 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9740 remote_buffer_add_int (&p
, &left
, fd
);
9741 remote_buffer_add_string (&p
, &left
, ",");
9743 remote_buffer_add_int (&p
, &left
, offset
);
9744 remote_buffer_add_string (&p
, &left
, ",");
9746 p
+= remote_escape_output (write_buf
, len
, (gdb_byte
*) p
, &out_len
,
9747 get_remote_packet_size () - (p
- rs
->buf
));
9749 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9750 remote_errno
, NULL
, NULL
);
9753 /* Read up to LEN bytes FD on the remote target into READ_BUF
9754 Return the number of bytes read, or -1 if an error occurs (and
9755 set *REMOTE_ERRNO). */
9758 remote_hostio_pread (struct target_ops
*self
,
9759 int fd
, gdb_byte
*read_buf
, int len
,
9760 ULONGEST offset
, int *remote_errno
)
9762 struct remote_state
*rs
= get_remote_state ();
9765 int left
= get_remote_packet_size ();
9766 int ret
, attachment_len
;
9769 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9771 remote_buffer_add_int (&p
, &left
, fd
);
9772 remote_buffer_add_string (&p
, &left
, ",");
9774 remote_buffer_add_int (&p
, &left
, len
);
9775 remote_buffer_add_string (&p
, &left
, ",");
9777 remote_buffer_add_int (&p
, &left
, offset
);
9779 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9780 remote_errno
, &attachment
,
9786 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9788 if (read_len
!= ret
)
9789 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9794 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9795 (and set *REMOTE_ERRNO). */
9798 remote_hostio_close (struct target_ops
*self
, int fd
, int *remote_errno
)
9800 struct remote_state
*rs
= get_remote_state ();
9802 int left
= get_remote_packet_size () - 1;
9804 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9806 remote_buffer_add_int (&p
, &left
, fd
);
9808 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9809 remote_errno
, NULL
, NULL
);
9812 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9813 occurs (and set *REMOTE_ERRNO). */
9816 remote_hostio_unlink (struct target_ops
*self
,
9817 const char *filename
, int *remote_errno
)
9819 struct remote_state
*rs
= get_remote_state ();
9821 int left
= get_remote_packet_size () - 1;
9823 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9825 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9828 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9829 remote_errno
, NULL
, NULL
);
9832 /* Read value of symbolic link FILENAME on the remote target. Return
9833 a null-terminated string allocated via xmalloc, or NULL if an error
9834 occurs (and set *REMOTE_ERRNO). */
9837 remote_hostio_readlink (struct target_ops
*self
,
9838 const char *filename
, int *remote_errno
)
9840 struct remote_state
*rs
= get_remote_state ();
9843 int left
= get_remote_packet_size ();
9844 int len
, attachment_len
;
9848 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9850 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9853 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9854 remote_errno
, &attachment
,
9860 ret
= xmalloc (len
+ 1);
9862 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9863 (gdb_byte
*) ret
, len
);
9864 if (read_len
!= len
)
9865 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9872 remote_fileio_errno_to_host (int errnum
)
9896 case FILEIO_ENOTDIR
:
9916 case FILEIO_ENAMETOOLONG
:
9917 return ENAMETOOLONG
;
9923 remote_hostio_error (int errnum
)
9925 int host_error
= remote_fileio_errno_to_host (errnum
);
9927 if (host_error
== -1)
9928 error (_("Unknown remote I/O error %d"), errnum
);
9930 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
9934 remote_hostio_close_cleanup (void *opaque
)
9936 int fd
= *(int *) opaque
;
9939 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
9944 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
9946 const char *filename
= bfd_get_filename (abfd
);
9947 int fd
, remote_errno
;
9950 gdb_assert (remote_filename_p (filename
));
9952 fd
= remote_hostio_open (find_target_at (process_stratum
),
9953 filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
9956 errno
= remote_fileio_errno_to_host (remote_errno
);
9957 bfd_set_error (bfd_error_system_call
);
9961 stream
= xmalloc (sizeof (int));
9967 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
9969 int fd
= *(int *)stream
;
9974 /* Ignore errors on close; these may happen if the remote
9975 connection was already torn down. */
9976 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
9978 /* Zero means success. */
9983 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
9984 file_ptr nbytes
, file_ptr offset
)
9986 int fd
= *(int *)stream
;
9988 file_ptr pos
, bytes
;
9991 while (nbytes
> pos
)
9993 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
9994 fd
, (gdb_byte
*) buf
+ pos
, nbytes
- pos
,
9995 offset
+ pos
, &remote_errno
);
9997 /* Success, but no bytes, means end-of-file. */
10001 errno
= remote_fileio_errno_to_host (remote_errno
);
10002 bfd_set_error (bfd_error_system_call
);
10013 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
10015 /* FIXME: We should probably implement remote_hostio_stat. */
10016 sb
->st_size
= INT_MAX
;
10021 remote_filename_p (const char *filename
)
10023 return strncmp (filename
,
10024 REMOTE_SYSROOT_PREFIX
,
10025 sizeof (REMOTE_SYSROOT_PREFIX
) - 1) == 0;
10029 remote_bfd_open (const char *remote_file
, const char *target
)
10031 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
10032 remote_bfd_iovec_open
, NULL
,
10033 remote_bfd_iovec_pread
,
10034 remote_bfd_iovec_close
,
10035 remote_bfd_iovec_stat
);
10041 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
10043 struct cleanup
*back_to
, *close_cleanup
;
10044 int retcode
, fd
, remote_errno
, bytes
, io_size
;
10047 int bytes_in_buffer
;
10050 struct remote_state
*rs
= get_remote_state ();
10052 if (!rs
->remote_desc
)
10053 error (_("command can only be used with remote target"));
10055 file
= gdb_fopen_cloexec (local_file
, "rb");
10057 perror_with_name (local_file
);
10058 back_to
= make_cleanup_fclose (file
);
10060 fd
= remote_hostio_open (find_target_at (process_stratum
),
10061 remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
10063 0700, &remote_errno
);
10065 remote_hostio_error (remote_errno
);
10067 /* Send up to this many bytes at once. They won't all fit in the
10068 remote packet limit, so we'll transfer slightly fewer. */
10069 io_size
= get_remote_packet_size ();
10070 buffer
= xmalloc (io_size
);
10071 make_cleanup (xfree
, buffer
);
10073 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10075 bytes_in_buffer
= 0;
10078 while (bytes_in_buffer
|| !saw_eof
)
10082 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
10083 io_size
- bytes_in_buffer
,
10088 error (_("Error reading %s."), local_file
);
10091 /* EOF. Unless there is something still in the
10092 buffer from the last iteration, we are done. */
10094 if (bytes_in_buffer
== 0)
10102 bytes
+= bytes_in_buffer
;
10103 bytes_in_buffer
= 0;
10105 retcode
= remote_hostio_pwrite (find_target_at (process_stratum
),
10107 offset
, &remote_errno
);
10110 remote_hostio_error (remote_errno
);
10111 else if (retcode
== 0)
10112 error (_("Remote write of %d bytes returned 0!"), bytes
);
10113 else if (retcode
< bytes
)
10115 /* Short write. Save the rest of the read data for the next
10117 bytes_in_buffer
= bytes
- retcode
;
10118 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
10124 discard_cleanups (close_cleanup
);
10125 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
10126 remote_hostio_error (remote_errno
);
10129 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
10130 do_cleanups (back_to
);
10134 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
10136 struct cleanup
*back_to
, *close_cleanup
;
10137 int fd
, remote_errno
, bytes
, io_size
;
10141 struct remote_state
*rs
= get_remote_state ();
10143 if (!rs
->remote_desc
)
10144 error (_("command can only be used with remote target"));
10146 fd
= remote_hostio_open (find_target_at (process_stratum
),
10147 remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
10149 remote_hostio_error (remote_errno
);
10151 file
= gdb_fopen_cloexec (local_file
, "wb");
10153 perror_with_name (local_file
);
10154 back_to
= make_cleanup_fclose (file
);
10156 /* Send up to this many bytes at once. They won't all fit in the
10157 remote packet limit, so we'll transfer slightly fewer. */
10158 io_size
= get_remote_packet_size ();
10159 buffer
= xmalloc (io_size
);
10160 make_cleanup (xfree
, buffer
);
10162 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10167 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
10168 fd
, buffer
, io_size
, offset
, &remote_errno
);
10170 /* Success, but no bytes, means end-of-file. */
10173 remote_hostio_error (remote_errno
);
10177 bytes
= fwrite (buffer
, 1, bytes
, file
);
10179 perror_with_name (local_file
);
10182 discard_cleanups (close_cleanup
);
10183 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
10184 remote_hostio_error (remote_errno
);
10187 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
10188 do_cleanups (back_to
);
10192 remote_file_delete (const char *remote_file
, int from_tty
)
10194 int retcode
, remote_errno
;
10195 struct remote_state
*rs
= get_remote_state ();
10197 if (!rs
->remote_desc
)
10198 error (_("command can only be used with remote target"));
10200 retcode
= remote_hostio_unlink (find_target_at (process_stratum
),
10201 remote_file
, &remote_errno
);
10203 remote_hostio_error (remote_errno
);
10206 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
10210 remote_put_command (char *args
, int from_tty
)
10212 struct cleanup
*back_to
;
10216 error_no_arg (_("file to put"));
10218 argv
= gdb_buildargv (args
);
10219 back_to
= make_cleanup_freeargv (argv
);
10220 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10221 error (_("Invalid parameters to remote put"));
10223 remote_file_put (argv
[0], argv
[1], from_tty
);
10225 do_cleanups (back_to
);
10229 remote_get_command (char *args
, int from_tty
)
10231 struct cleanup
*back_to
;
10235 error_no_arg (_("file to get"));
10237 argv
= gdb_buildargv (args
);
10238 back_to
= make_cleanup_freeargv (argv
);
10239 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10240 error (_("Invalid parameters to remote get"));
10242 remote_file_get (argv
[0], argv
[1], from_tty
);
10244 do_cleanups (back_to
);
10248 remote_delete_command (char *args
, int from_tty
)
10250 struct cleanup
*back_to
;
10254 error_no_arg (_("file to delete"));
10256 argv
= gdb_buildargv (args
);
10257 back_to
= make_cleanup_freeargv (argv
);
10258 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10259 error (_("Invalid parameters to remote delete"));
10261 remote_file_delete (argv
[0], from_tty
);
10263 do_cleanups (back_to
);
10267 remote_command (char *args
, int from_tty
)
10269 help_list (remote_cmdlist
, "remote ", all_commands
, gdb_stdout
);
10273 remote_can_execute_reverse (struct target_ops
*self
)
10275 if (packet_support (PACKET_bs
) == PACKET_ENABLE
10276 || packet_support (PACKET_bc
) == PACKET_ENABLE
)
10283 remote_supports_non_stop (struct target_ops
*self
)
10289 remote_supports_disable_randomization (struct target_ops
*self
)
10291 /* Only supported in extended mode. */
10296 remote_supports_multi_process (struct target_ops
*self
)
10298 struct remote_state
*rs
= get_remote_state ();
10300 /* Only extended-remote handles being attached to multiple
10301 processes, even though plain remote can use the multi-process
10302 thread id extensions, so that GDB knows the target process's
10304 return rs
->extended
&& remote_multi_process_p (rs
);
10308 remote_supports_cond_tracepoints (void)
10310 return packet_support (PACKET_ConditionalTracepoints
) == PACKET_ENABLE
;
10314 remote_supports_cond_breakpoints (struct target_ops
*self
)
10316 return packet_support (PACKET_ConditionalBreakpoints
) == PACKET_ENABLE
;
10320 remote_supports_fast_tracepoints (void)
10322 return packet_support (PACKET_FastTracepoints
) == PACKET_ENABLE
;
10326 remote_supports_static_tracepoints (void)
10328 return packet_support (PACKET_StaticTracepoints
) == PACKET_ENABLE
;
10332 remote_supports_install_in_trace (void)
10334 return packet_support (PACKET_InstallInTrace
) == PACKET_ENABLE
;
10338 remote_supports_enable_disable_tracepoint (struct target_ops
*self
)
10340 return (packet_support (PACKET_EnableDisableTracepoints_feature
)
10345 remote_supports_string_tracing (struct target_ops
*self
)
10347 return packet_support (PACKET_tracenz_feature
) == PACKET_ENABLE
;
10351 remote_can_run_breakpoint_commands (struct target_ops
*self
)
10353 return packet_support (PACKET_BreakpointCommands
) == PACKET_ENABLE
;
10357 remote_trace_init (struct target_ops
*self
)
10360 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10361 if (strcmp (target_buf
, "OK") != 0)
10362 error (_("Target does not support this command."));
10365 static void free_actions_list (char **actions_list
);
10366 static void free_actions_list_cleanup_wrapper (void *);
10368 free_actions_list_cleanup_wrapper (void *al
)
10370 free_actions_list (al
);
10374 free_actions_list (char **actions_list
)
10378 if (actions_list
== 0)
10381 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10382 xfree (actions_list
[ndx
]);
10384 xfree (actions_list
);
10387 /* Recursive routine to walk through command list including loops, and
10388 download packets for each command. */
10391 remote_download_command_source (int num
, ULONGEST addr
,
10392 struct command_line
*cmds
)
10394 struct remote_state
*rs
= get_remote_state ();
10395 struct command_line
*cmd
;
10397 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10399 QUIT
; /* Allow user to bail out with ^C. */
10400 strcpy (rs
->buf
, "QTDPsrc:");
10401 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10402 rs
->buf
+ strlen (rs
->buf
),
10403 rs
->buf_size
- strlen (rs
->buf
));
10405 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10406 if (strcmp (target_buf
, "OK"))
10407 warning (_("Target does not support source download."));
10409 if (cmd
->control_type
== while_control
10410 || cmd
->control_type
== while_stepping_control
)
10412 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10414 QUIT
; /* Allow user to bail out with ^C. */
10415 strcpy (rs
->buf
, "QTDPsrc:");
10416 encode_source_string (num
, addr
, "cmd", "end",
10417 rs
->buf
+ strlen (rs
->buf
),
10418 rs
->buf_size
- strlen (rs
->buf
));
10420 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10421 if (strcmp (target_buf
, "OK"))
10422 warning (_("Target does not support source download."));
10428 remote_download_tracepoint (struct target_ops
*self
, struct bp_location
*loc
)
10430 #define BUF_SIZE 2048
10434 char buf
[BUF_SIZE
];
10435 char **tdp_actions
;
10436 char **stepping_actions
;
10438 struct cleanup
*old_chain
= NULL
;
10439 struct agent_expr
*aexpr
;
10440 struct cleanup
*aexpr_chain
= NULL
;
10442 struct breakpoint
*b
= loc
->owner
;
10443 struct tracepoint
*t
= (struct tracepoint
*) b
;
10445 encode_actions_rsp (loc
, &tdp_actions
, &stepping_actions
);
10446 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10448 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10451 tpaddr
= loc
->address
;
10452 sprintf_vma (addrbuf
, tpaddr
);
10453 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10454 addrbuf
, /* address */
10455 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10456 t
->step_count
, t
->pass_count
);
10457 /* Fast tracepoints are mostly handled by the target, but we can
10458 tell the target how big of an instruction block should be moved
10460 if (b
->type
== bp_fast_tracepoint
)
10462 /* Only test for support at download time; we may not know
10463 target capabilities at definition time. */
10464 if (remote_supports_fast_tracepoints ())
10468 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10469 tpaddr
, &isize
, NULL
))
10470 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10473 /* If it passed validation at definition but fails now,
10474 something is very wrong. */
10475 internal_error (__FILE__
, __LINE__
,
10476 _("Fast tracepoint not "
10477 "valid during download"));
10480 /* Fast tracepoints are functionally identical to regular
10481 tracepoints, so don't take lack of support as a reason to
10482 give up on the trace run. */
10483 warning (_("Target does not support fast tracepoints, "
10484 "downloading %d as regular tracepoint"), b
->number
);
10486 else if (b
->type
== bp_static_tracepoint
)
10488 /* Only test for support at download time; we may not know
10489 target capabilities at definition time. */
10490 if (remote_supports_static_tracepoints ())
10492 struct static_tracepoint_marker marker
;
10494 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10495 strcat (buf
, ":S");
10497 error (_("Static tracepoint not valid during download"));
10500 /* Fast tracepoints are functionally identical to regular
10501 tracepoints, so don't take lack of support as a reason
10502 to give up on the trace run. */
10503 error (_("Target does not support static tracepoints"));
10505 /* If the tracepoint has a conditional, make it into an agent
10506 expression and append to the definition. */
10509 /* Only test support at download time, we may not know target
10510 capabilities at definition time. */
10511 if (remote_supports_cond_tracepoints ())
10513 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10514 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10515 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10517 pkt
= buf
+ strlen (buf
);
10518 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10519 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10521 do_cleanups (aexpr_chain
);
10524 warning (_("Target does not support conditional tracepoints, "
10525 "ignoring tp %d cond"), b
->number
);
10528 if (b
->commands
|| *default_collect
)
10531 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10532 if (strcmp (target_buf
, "OK"))
10533 error (_("Target does not support tracepoints."));
10535 /* do_single_steps (t); */
10538 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10540 QUIT
; /* Allow user to bail out with ^C. */
10541 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10542 b
->number
, addrbuf
, /* address */
10544 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10547 remote_get_noisy_reply (&target_buf
,
10549 if (strcmp (target_buf
, "OK"))
10550 error (_("Error on target while setting tracepoints."));
10553 if (stepping_actions
)
10555 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10557 QUIT
; /* Allow user to bail out with ^C. */
10558 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10559 b
->number
, addrbuf
, /* address */
10560 ((ndx
== 0) ? "S" : ""),
10561 stepping_actions
[ndx
],
10562 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10564 remote_get_noisy_reply (&target_buf
,
10566 if (strcmp (target_buf
, "OK"))
10567 error (_("Error on target while setting tracepoints."));
10571 if (packet_support (PACKET_TracepointSource
) == PACKET_ENABLE
)
10573 if (b
->addr_string
)
10575 strcpy (buf
, "QTDPsrc:");
10576 encode_source_string (b
->number
, loc
->address
,
10577 "at", b
->addr_string
, buf
+ strlen (buf
),
10578 2048 - strlen (buf
));
10581 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10582 if (strcmp (target_buf
, "OK"))
10583 warning (_("Target does not support source download."));
10585 if (b
->cond_string
)
10587 strcpy (buf
, "QTDPsrc:");
10588 encode_source_string (b
->number
, loc
->address
,
10589 "cond", b
->cond_string
, buf
+ strlen (buf
),
10590 2048 - strlen (buf
));
10592 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10593 if (strcmp (target_buf
, "OK"))
10594 warning (_("Target does not support source download."));
10596 remote_download_command_source (b
->number
, loc
->address
,
10597 breakpoint_commands (b
));
10600 do_cleanups (old_chain
);
10604 remote_can_download_tracepoint (struct target_ops
*self
)
10606 struct remote_state
*rs
= get_remote_state ();
10607 struct trace_status
*ts
;
10610 /* Don't try to install tracepoints until we've relocated our
10611 symbols, and fetched and merged the target's tracepoint list with
10613 if (rs
->starting_up
)
10616 ts
= current_trace_status ();
10617 status
= remote_get_trace_status (self
, ts
);
10619 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10622 /* If we are in a tracing experiment, but remote stub doesn't support
10623 installing tracepoint in trace, we have to return. */
10624 if (!remote_supports_install_in_trace ())
10632 remote_download_trace_state_variable (struct target_ops
*self
,
10633 struct trace_state_variable
*tsv
)
10635 struct remote_state
*rs
= get_remote_state ();
10638 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10639 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10641 p
= rs
->buf
+ strlen (rs
->buf
);
10642 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10643 error (_("Trace state variable name too long for tsv definition packet"));
10644 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, strlen (tsv
->name
));
10647 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10648 if (*target_buf
== '\0')
10649 error (_("Target does not support this command."));
10650 if (strcmp (target_buf
, "OK") != 0)
10651 error (_("Error on target while downloading trace state variable."));
10655 remote_enable_tracepoint (struct target_ops
*self
,
10656 struct bp_location
*location
)
10658 struct remote_state
*rs
= get_remote_state ();
10661 sprintf_vma (addr_buf
, location
->address
);
10662 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10663 location
->owner
->number
, addr_buf
);
10665 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10666 if (*rs
->buf
== '\0')
10667 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10668 if (strcmp (rs
->buf
, "OK") != 0)
10669 error (_("Error on target while enabling tracepoint."));
10673 remote_disable_tracepoint (struct target_ops
*self
,
10674 struct bp_location
*location
)
10676 struct remote_state
*rs
= get_remote_state ();
10679 sprintf_vma (addr_buf
, location
->address
);
10680 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10681 location
->owner
->number
, addr_buf
);
10683 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10684 if (*rs
->buf
== '\0')
10685 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10686 if (strcmp (rs
->buf
, "OK") != 0)
10687 error (_("Error on target while disabling tracepoint."));
10691 remote_trace_set_readonly_regions (struct target_ops
*self
)
10695 bfd_size_type size
;
10701 return; /* No information to give. */
10703 strcpy (target_buf
, "QTro");
10704 offset
= strlen (target_buf
);
10705 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10707 char tmp1
[40], tmp2
[40];
10710 if ((s
->flags
& SEC_LOAD
) == 0 ||
10711 /* (s->flags & SEC_CODE) == 0 || */
10712 (s
->flags
& SEC_READONLY
) == 0)
10716 vma
= bfd_get_section_vma (abfd
, s
);
10717 size
= bfd_get_section_size (s
);
10718 sprintf_vma (tmp1
, vma
);
10719 sprintf_vma (tmp2
, vma
+ size
);
10720 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10721 if (offset
+ sec_length
+ 1 > target_buf_size
)
10723 if (packet_support (PACKET_qXfer_traceframe_info
) != PACKET_ENABLE
)
10725 Too many sections for read-only sections definition packet."));
10728 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10730 offset
+= sec_length
;
10734 putpkt (target_buf
);
10735 getpkt (&target_buf
, &target_buf_size
, 0);
10740 remote_trace_start (struct target_ops
*self
)
10742 putpkt ("QTStart");
10743 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10744 if (*target_buf
== '\0')
10745 error (_("Target does not support this command."));
10746 if (strcmp (target_buf
, "OK") != 0)
10747 error (_("Bogus reply from target: %s"), target_buf
);
10751 remote_get_trace_status (struct target_ops
*self
, struct trace_status
*ts
)
10753 /* Initialize it just to avoid a GCC false warning. */
10755 /* FIXME we need to get register block size some other way. */
10756 extern int trace_regblock_size
;
10757 volatile struct gdb_exception ex
;
10758 enum packet_result result
;
10760 if (packet_support (PACKET_qTStatus
) == PACKET_DISABLE
)
10763 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10765 putpkt ("qTStatus");
10767 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10769 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10773 if (ex
.error
!= TARGET_CLOSE_ERROR
)
10775 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10778 throw_exception (ex
);
10781 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
10783 /* If the remote target doesn't do tracing, flag it. */
10784 if (result
== PACKET_UNKNOWN
)
10787 /* We're working with a live target. */
10788 ts
->filename
= NULL
;
10791 error (_("Bogus trace status reply from target: %s"), target_buf
);
10793 /* Function 'parse_trace_status' sets default value of each field of
10794 'ts' at first, so we don't have to do it here. */
10795 parse_trace_status (p
, ts
);
10797 return ts
->running
;
10801 remote_get_tracepoint_status (struct target_ops
*self
, struct breakpoint
*bp
,
10802 struct uploaded_tp
*utp
)
10804 struct remote_state
*rs
= get_remote_state ();
10806 struct bp_location
*loc
;
10807 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10808 size_t size
= get_remote_packet_size ();
10812 tp
->base
.hit_count
= 0;
10813 tp
->traceframe_usage
= 0;
10814 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10816 /* If the tracepoint was never downloaded, don't go asking for
10818 if (tp
->number_on_target
== 0)
10820 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
10821 phex_nz (loc
->address
, 0));
10823 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10824 if (reply
&& *reply
)
10827 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10833 utp
->hit_count
= 0;
10834 utp
->traceframe_usage
= 0;
10835 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
10836 phex_nz (utp
->addr
, 0));
10838 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10839 if (reply
&& *reply
)
10842 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10848 remote_trace_stop (struct target_ops
*self
)
10851 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10852 if (*target_buf
== '\0')
10853 error (_("Target does not support this command."));
10854 if (strcmp (target_buf
, "OK") != 0)
10855 error (_("Bogus reply from target: %s"), target_buf
);
10859 remote_trace_find (struct target_ops
*self
,
10860 enum trace_find_type type
, int num
,
10861 CORE_ADDR addr1
, CORE_ADDR addr2
,
10864 struct remote_state
*rs
= get_remote_state ();
10865 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10867 int target_frameno
= -1, target_tracept
= -1;
10869 /* Lookups other than by absolute frame number depend on the current
10870 trace selected, so make sure it is correct on the remote end
10872 if (type
!= tfind_number
)
10873 set_remote_traceframe ();
10876 strcpy (p
, "QTFrame:");
10877 p
= strchr (p
, '\0');
10881 xsnprintf (p
, endbuf
- p
, "%x", num
);
10884 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
10887 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
10890 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
10891 phex_nz (addr2
, 0));
10893 case tfind_outside
:
10894 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
10895 phex_nz (addr2
, 0));
10898 error (_("Unknown trace find type %d"), type
);
10902 reply
= remote_get_noisy_reply (&(rs
->buf
), &rs
->buf_size
);
10903 if (*reply
== '\0')
10904 error (_("Target does not support this command."));
10906 while (reply
&& *reply
)
10911 target_frameno
= (int) strtol (p
, &reply
, 16);
10913 error (_("Unable to parse trace frame number"));
10914 /* Don't update our remote traceframe number cache on failure
10915 to select a remote traceframe. */
10916 if (target_frameno
== -1)
10921 target_tracept
= (int) strtol (p
, &reply
, 16);
10923 error (_("Unable to parse tracepoint number"));
10925 case 'O': /* "OK"? */
10926 if (reply
[1] == 'K' && reply
[2] == '\0')
10929 error (_("Bogus reply from target: %s"), reply
);
10932 error (_("Bogus reply from target: %s"), reply
);
10935 *tpp
= target_tracept
;
10937 rs
->remote_traceframe_number
= target_frameno
;
10938 return target_frameno
;
10942 remote_get_trace_state_variable_value (struct target_ops
*self
,
10943 int tsvnum
, LONGEST
*val
)
10945 struct remote_state
*rs
= get_remote_state ();
10949 set_remote_traceframe ();
10951 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
10953 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10954 if (reply
&& *reply
)
10958 unpack_varlen_hex (reply
+ 1, &uval
);
10959 *val
= (LONGEST
) uval
;
10967 remote_save_trace_data (struct target_ops
*self
, const char *filename
)
10969 struct remote_state
*rs
= get_remote_state ();
10973 strcpy (p
, "QTSave:");
10975 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
10976 error (_("Remote file name too long for trace save packet"));
10977 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, strlen (filename
));
10980 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10981 if (*reply
== '\0')
10982 error (_("Target does not support this command."));
10983 if (strcmp (reply
, "OK") != 0)
10984 error (_("Bogus reply from target: %s"), reply
);
10988 /* This is basically a memory transfer, but needs to be its own packet
10989 because we don't know how the target actually organizes its trace
10990 memory, plus we want to be able to ask for as much as possible, but
10991 not be unhappy if we don't get as much as we ask for. */
10994 remote_get_raw_trace_data (struct target_ops
*self
,
10995 gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
10997 struct remote_state
*rs
= get_remote_state ();
11003 strcpy (p
, "qTBuffer:");
11005 p
+= hexnumstr (p
, offset
);
11007 p
+= hexnumstr (p
, len
);
11011 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11012 if (reply
&& *reply
)
11014 /* 'l' by itself means we're at the end of the buffer and
11015 there is nothing more to get. */
11019 /* Convert the reply into binary. Limit the number of bytes to
11020 convert according to our passed-in buffer size, rather than
11021 what was returned in the packet; if the target is
11022 unexpectedly generous and gives us a bigger reply than we
11023 asked for, we don't want to crash. */
11024 rslt
= hex2bin (target_buf
, buf
, len
);
11028 /* Something went wrong, flag as an error. */
11033 remote_set_disconnected_tracing (struct target_ops
*self
, int val
)
11035 struct remote_state
*rs
= get_remote_state ();
11037 if (packet_support (PACKET_DisconnectedTracing_feature
) == PACKET_ENABLE
)
11041 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
11043 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11044 if (*reply
== '\0')
11045 error (_("Target does not support this command."));
11046 if (strcmp (reply
, "OK") != 0)
11047 error (_("Bogus reply from target: %s"), reply
);
11050 warning (_("Target does not support disconnected tracing."));
11054 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
11056 struct thread_info
*info
= find_thread_ptid (ptid
);
11058 if (info
&& info
->private)
11059 return info
->private->core
;
11064 remote_set_circular_trace_buffer (struct target_ops
*self
, int val
)
11066 struct remote_state
*rs
= get_remote_state ();
11069 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
11071 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11072 if (*reply
== '\0')
11073 error (_("Target does not support this command."));
11074 if (strcmp (reply
, "OK") != 0)
11075 error (_("Bogus reply from target: %s"), reply
);
11078 static struct traceframe_info
*
11079 remote_traceframe_info (struct target_ops
*self
)
11083 text
= target_read_stralloc (¤t_target
,
11084 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
11087 struct traceframe_info
*info
;
11088 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
11090 info
= parse_traceframe_info (text
);
11091 do_cleanups (back_to
);
11098 /* Handle the qTMinFTPILen packet. Returns the minimum length of
11099 instruction on which a fast tracepoint may be placed. Returns -1
11100 if the packet is not supported, and 0 if the minimum instruction
11101 length is unknown. */
11104 remote_get_min_fast_tracepoint_insn_len (struct target_ops
*self
)
11106 struct remote_state
*rs
= get_remote_state ();
11109 /* If we're not debugging a process yet, the IPA can't be
11111 if (!target_has_execution
)
11114 /* Make sure the remote is pointing at the right process. */
11115 set_general_process ();
11117 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
11119 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11120 if (*reply
== '\0')
11124 ULONGEST min_insn_len
;
11126 unpack_varlen_hex (reply
, &min_insn_len
);
11128 return (int) min_insn_len
;
11133 remote_set_trace_buffer_size (struct target_ops
*self
, LONGEST val
)
11135 if (packet_support (PACKET_QTBuffer_size
) != PACKET_DISABLE
)
11137 struct remote_state
*rs
= get_remote_state ();
11138 char *buf
= rs
->buf
;
11139 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11140 enum packet_result result
;
11142 gdb_assert (val
>= 0 || val
== -1);
11143 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
11144 /* Send -1 as literal "-1" to avoid host size dependency. */
11148 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
11151 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
11154 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
11155 result
= packet_ok (rs
->buf
,
11156 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
11158 if (result
!= PACKET_OK
)
11159 warning (_("Bogus reply from target: %s"), rs
->buf
);
11164 remote_set_trace_notes (struct target_ops
*self
,
11165 const char *user
, const char *notes
,
11166 const char *stop_notes
)
11168 struct remote_state
*rs
= get_remote_state ();
11170 char *buf
= rs
->buf
;
11171 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11174 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
11177 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
11178 nbytes
= bin2hex ((gdb_byte
*) user
, buf
, strlen (user
));
11184 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
11185 nbytes
= bin2hex ((gdb_byte
*) notes
, buf
, strlen (notes
));
11191 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
11192 nbytes
= bin2hex ((gdb_byte
*) stop_notes
, buf
, strlen (stop_notes
));
11196 /* Ensure the buffer is terminated. */
11200 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11201 if (*reply
== '\0')
11204 if (strcmp (reply
, "OK") != 0)
11205 error (_("Bogus reply from target: %s"), reply
);
11211 remote_use_agent (struct target_ops
*self
, int use
)
11213 if (packet_support (PACKET_QAgent
) != PACKET_DISABLE
)
11215 struct remote_state
*rs
= get_remote_state ();
11217 /* If the stub supports QAgent. */
11218 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
11220 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11222 if (strcmp (rs
->buf
, "OK") == 0)
11233 remote_can_use_agent (struct target_ops
*self
)
11235 return (packet_support (PACKET_QAgent
) != PACKET_DISABLE
);
11238 struct btrace_target_info
11240 /* The ptid of the traced thread. */
11244 /* Check whether the target supports branch tracing. */
11247 remote_supports_btrace (struct target_ops
*self
)
11249 if (packet_support (PACKET_Qbtrace_off
) != PACKET_ENABLE
)
11251 if (packet_support (PACKET_Qbtrace_bts
) != PACKET_ENABLE
)
11253 if (packet_support (PACKET_qXfer_btrace
) != PACKET_ENABLE
)
11259 /* Enable branch tracing. */
11261 static struct btrace_target_info
*
11262 remote_enable_btrace (struct target_ops
*self
, ptid_t ptid
)
11264 struct btrace_target_info
*tinfo
= NULL
;
11265 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
11266 struct remote_state
*rs
= get_remote_state ();
11267 char *buf
= rs
->buf
;
11268 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11270 if (packet_config_support (packet
) != PACKET_ENABLE
)
11271 error (_("Target does not support branch tracing."));
11273 set_general_thread (ptid
);
11275 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11277 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11279 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11281 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11282 error (_("Could not enable branch tracing for %s: %s"),
11283 target_pid_to_str (ptid
), rs
->buf
+ 2);
11285 error (_("Could not enable branch tracing for %s."),
11286 target_pid_to_str (ptid
));
11289 tinfo
= xzalloc (sizeof (*tinfo
));
11290 tinfo
->ptid
= ptid
;
11295 /* Disable branch tracing. */
11298 remote_disable_btrace (struct target_ops
*self
,
11299 struct btrace_target_info
*tinfo
)
11301 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
11302 struct remote_state
*rs
= get_remote_state ();
11303 char *buf
= rs
->buf
;
11304 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11306 if (packet_config_support (packet
) != PACKET_ENABLE
)
11307 error (_("Target does not support branch tracing."));
11309 set_general_thread (tinfo
->ptid
);
11311 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11313 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11315 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11317 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11318 error (_("Could not disable branch tracing for %s: %s"),
11319 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
11321 error (_("Could not disable branch tracing for %s."),
11322 target_pid_to_str (tinfo
->ptid
));
11328 /* Teardown branch tracing. */
11331 remote_teardown_btrace (struct target_ops
*self
,
11332 struct btrace_target_info
*tinfo
)
11334 /* We must not talk to the target during teardown. */
11338 /* Read the branch trace. */
11340 static enum btrace_error
11341 remote_read_btrace (struct target_ops
*self
,
11342 VEC (btrace_block_s
) **btrace
,
11343 struct btrace_target_info
*tinfo
,
11344 enum btrace_read_type type
)
11346 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
11347 struct remote_state
*rs
= get_remote_state ();
11348 struct cleanup
*cleanup
;
11352 if (packet_config_support (packet
) != PACKET_ENABLE
)
11353 error (_("Target does not support branch tracing."));
11355 #if !defined(HAVE_LIBEXPAT)
11356 error (_("Cannot process branch tracing result. XML parsing not supported."));
11361 case BTRACE_READ_ALL
:
11364 case BTRACE_READ_NEW
:
11367 case BTRACE_READ_DELTA
:
11371 internal_error (__FILE__
, __LINE__
,
11372 _("Bad branch tracing read type: %u."),
11373 (unsigned int) type
);
11376 xml
= target_read_stralloc (¤t_target
,
11377 TARGET_OBJECT_BTRACE
, annex
);
11379 return BTRACE_ERR_UNKNOWN
;
11381 cleanup
= make_cleanup (xfree
, xml
);
11382 *btrace
= parse_xml_btrace (xml
);
11383 do_cleanups (cleanup
);
11385 return BTRACE_ERR_NONE
;
11389 remote_augmented_libraries_svr4_read (struct target_ops
*self
)
11391 return (packet_support (PACKET_augmented_libraries_svr4_read_feature
)
11395 /* Implementation of to_load. */
11398 remote_load (struct target_ops
*self
, const char *name
, int from_tty
)
11400 generic_load (name
, from_tty
);
11404 init_remote_ops (void)
11406 remote_ops
.to_shortname
= "remote";
11407 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11408 remote_ops
.to_doc
=
11409 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11410 Specify the serial device it is connected to\n\
11411 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11412 remote_ops
.to_open
= remote_open
;
11413 remote_ops
.to_close
= remote_close
;
11414 remote_ops
.to_detach
= remote_detach
;
11415 remote_ops
.to_disconnect
= remote_disconnect
;
11416 remote_ops
.to_resume
= remote_resume
;
11417 remote_ops
.to_wait
= remote_wait
;
11418 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11419 remote_ops
.to_store_registers
= remote_store_registers
;
11420 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11421 remote_ops
.to_files_info
= remote_files_info
;
11422 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11423 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11424 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11425 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11426 remote_ops
.to_watchpoint_addr_within_range
=
11427 remote_watchpoint_addr_within_range
;
11428 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11429 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11430 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11431 remote_ops
.to_region_ok_for_hw_watchpoint
11432 = remote_region_ok_for_hw_watchpoint
;
11433 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11434 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11435 remote_ops
.to_kill
= remote_kill
;
11436 remote_ops
.to_load
= remote_load
;
11437 remote_ops
.to_mourn_inferior
= remote_mourn
;
11438 remote_ops
.to_pass_signals
= remote_pass_signals
;
11439 remote_ops
.to_program_signals
= remote_program_signals
;
11440 remote_ops
.to_thread_alive
= remote_thread_alive
;
11441 remote_ops
.to_find_new_threads
= remote_threads_info
;
11442 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11443 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11444 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11445 remote_ops
.to_stop
= remote_stop
;
11446 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11447 remote_ops
.to_rcmd
= remote_rcmd
;
11448 remote_ops
.to_log_command
= serial_log_command
;
11449 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11450 remote_ops
.to_stratum
= process_stratum
;
11451 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11452 remote_ops
.to_has_memory
= default_child_has_memory
;
11453 remote_ops
.to_has_stack
= default_child_has_stack
;
11454 remote_ops
.to_has_registers
= default_child_has_registers
;
11455 remote_ops
.to_has_execution
= default_child_has_execution
;
11456 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11457 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11458 remote_ops
.to_magic
= OPS_MAGIC
;
11459 remote_ops
.to_memory_map
= remote_memory_map
;
11460 remote_ops
.to_flash_erase
= remote_flash_erase
;
11461 remote_ops
.to_flash_done
= remote_flash_done
;
11462 remote_ops
.to_read_description
= remote_read_description
;
11463 remote_ops
.to_search_memory
= remote_search_memory
;
11464 remote_ops
.to_can_async_p
= remote_can_async_p
;
11465 remote_ops
.to_is_async_p
= remote_is_async_p
;
11466 remote_ops
.to_async
= remote_async
;
11467 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11468 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11469 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11470 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11471 remote_ops
.to_supports_disable_randomization
11472 = remote_supports_disable_randomization
;
11473 remote_ops
.to_fileio_open
= remote_hostio_open
;
11474 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11475 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11476 remote_ops
.to_fileio_close
= remote_hostio_close
;
11477 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11478 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11479 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11480 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11481 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11482 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11483 remote_ops
.to_trace_init
= remote_trace_init
;
11484 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11485 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11486 remote_ops
.to_download_trace_state_variable
11487 = remote_download_trace_state_variable
;
11488 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11489 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11490 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11491 remote_ops
.to_trace_start
= remote_trace_start
;
11492 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11493 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11494 remote_ops
.to_trace_stop
= remote_trace_stop
;
11495 remote_ops
.to_trace_find
= remote_trace_find
;
11496 remote_ops
.to_get_trace_state_variable_value
11497 = remote_get_trace_state_variable_value
;
11498 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11499 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11500 remote_ops
.to_upload_trace_state_variables
11501 = remote_upload_trace_state_variables
;
11502 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11503 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11504 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11505 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11506 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
11507 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11508 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11509 remote_ops
.to_verify_memory
= remote_verify_memory
;
11510 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11511 remote_ops
.to_set_permissions
= remote_set_permissions
;
11512 remote_ops
.to_static_tracepoint_marker_at
11513 = remote_static_tracepoint_marker_at
;
11514 remote_ops
.to_static_tracepoint_markers_by_strid
11515 = remote_static_tracepoint_markers_by_strid
;
11516 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11517 remote_ops
.to_use_agent
= remote_use_agent
;
11518 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11519 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
11520 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
11521 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
11522 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
11523 remote_ops
.to_read_btrace
= remote_read_btrace
;
11524 remote_ops
.to_augmented_libraries_svr4_read
=
11525 remote_augmented_libraries_svr4_read
;
11528 /* Set up the extended remote vector by making a copy of the standard
11529 remote vector and adding to it. */
11532 init_extended_remote_ops (void)
11534 extended_remote_ops
= remote_ops
;
11536 extended_remote_ops
.to_shortname
= "extended-remote";
11537 extended_remote_ops
.to_longname
=
11538 "Extended remote serial target in gdb-specific protocol";
11539 extended_remote_ops
.to_doc
=
11540 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11541 Specify the serial device it is connected to (e.g. /dev/ttya).";
11542 extended_remote_ops
.to_open
= extended_remote_open
;
11543 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11544 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11545 extended_remote_ops
.to_detach
= extended_remote_detach
;
11546 extended_remote_ops
.to_attach
= extended_remote_attach
;
11547 extended_remote_ops
.to_post_attach
= extended_remote_post_attach
;
11548 extended_remote_ops
.to_kill
= extended_remote_kill
;
11549 extended_remote_ops
.to_supports_disable_randomization
11550 = extended_remote_supports_disable_randomization
;
11554 remote_can_async_p (struct target_ops
*ops
)
11556 struct remote_state
*rs
= get_remote_state ();
11558 if (!target_async_permitted
)
11559 /* We only enable async when the user specifically asks for it. */
11562 /* We're async whenever the serial device is. */
11563 return serial_can_async_p (rs
->remote_desc
);
11567 remote_is_async_p (struct target_ops
*ops
)
11569 struct remote_state
*rs
= get_remote_state ();
11571 if (!target_async_permitted
)
11572 /* We only enable async when the user specifically asks for it. */
11575 /* We're async whenever the serial device is. */
11576 return serial_is_async_p (rs
->remote_desc
);
11579 /* Pass the SERIAL event on and up to the client. One day this code
11580 will be able to delay notifying the client of an event until the
11581 point where an entire packet has been received. */
11583 static serial_event_ftype remote_async_serial_handler
;
11586 remote_async_serial_handler (struct serial
*scb
, void *context
)
11588 struct remote_state
*rs
= context
;
11590 /* Don't propogate error information up to the client. Instead let
11591 the client find out about the error by querying the target. */
11592 rs
->async_client_callback (INF_REG_EVENT
, rs
->async_client_context
);
11596 remote_async_inferior_event_handler (gdb_client_data data
)
11598 inferior_event_handler (INF_REG_EVENT
, NULL
);
11602 remote_async (struct target_ops
*ops
,
11603 void (*callback
) (enum inferior_event_type event_type
,
11607 struct remote_state
*rs
= get_remote_state ();
11609 if (callback
!= NULL
)
11611 serial_async (rs
->remote_desc
, remote_async_serial_handler
, rs
);
11612 rs
->async_client_callback
= callback
;
11613 rs
->async_client_context
= context
;
11616 serial_async (rs
->remote_desc
, NULL
, NULL
);
11620 set_remote_cmd (char *args
, int from_tty
)
11622 help_list (remote_set_cmdlist
, "set remote ", all_commands
, gdb_stdout
);
11626 show_remote_cmd (char *args
, int from_tty
)
11628 /* We can't just use cmd_show_list here, because we want to skip
11629 the redundant "show remote Z-packet" and the legacy aliases. */
11630 struct cleanup
*showlist_chain
;
11631 struct cmd_list_element
*list
= remote_show_cmdlist
;
11632 struct ui_out
*uiout
= current_uiout
;
11634 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
11635 for (; list
!= NULL
; list
= list
->next
)
11636 if (strcmp (list
->name
, "Z-packet") == 0)
11638 else if (list
->type
== not_set_cmd
)
11639 /* Alias commands are exactly like the original, except they
11640 don't have the normal type. */
11644 struct cleanup
*option_chain
11645 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
11647 ui_out_field_string (uiout
, "name", list
->name
);
11648 ui_out_text (uiout
, ": ");
11649 if (list
->type
== show_cmd
)
11650 do_show_command ((char *) NULL
, from_tty
, list
);
11652 cmd_func (list
, NULL
, from_tty
);
11653 /* Close the tuple. */
11654 do_cleanups (option_chain
);
11657 /* Close the tuple. */
11658 do_cleanups (showlist_chain
);
11662 /* Function to be called whenever a new objfile (shlib) is detected. */
11664 remote_new_objfile (struct objfile
*objfile
)
11666 struct remote_state
*rs
= get_remote_state ();
11668 if (rs
->remote_desc
!= 0) /* Have a remote connection. */
11669 remote_check_symbols ();
11672 /* Pull all the tracepoints defined on the target and create local
11673 data structures representing them. We don't want to create real
11674 tracepoints yet, we don't want to mess up the user's existing
11678 remote_upload_tracepoints (struct target_ops
*self
, struct uploaded_tp
**utpp
)
11680 struct remote_state
*rs
= get_remote_state ();
11683 /* Ask for a first packet of tracepoint definition. */
11685 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11687 while (*p
&& *p
!= 'l')
11689 parse_tracepoint_definition (p
, utpp
);
11690 /* Ask for another packet of tracepoint definition. */
11692 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11699 remote_upload_trace_state_variables (struct target_ops
*self
,
11700 struct uploaded_tsv
**utsvp
)
11702 struct remote_state
*rs
= get_remote_state ();
11705 /* Ask for a first packet of variable definition. */
11707 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11709 while (*p
&& *p
!= 'l')
11711 parse_tsv_definition (p
, utsvp
);
11712 /* Ask for another packet of variable definition. */
11714 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11720 /* The "set/show range-stepping" show hook. */
11723 show_range_stepping (struct ui_file
*file
, int from_tty
,
11724 struct cmd_list_element
*c
,
11727 fprintf_filtered (file
,
11728 _("Debugger's willingness to use range stepping "
11729 "is %s.\n"), value
);
11732 /* The "set/show range-stepping" set hook. */
11735 set_range_stepping (char *ignore_args
, int from_tty
,
11736 struct cmd_list_element
*c
)
11738 struct remote_state
*rs
= get_remote_state ();
11740 /* Whene enabling, check whether range stepping is actually
11741 supported by the target, and warn if not. */
11742 if (use_range_stepping
)
11744 if (rs
->remote_desc
!= NULL
)
11746 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
11747 remote_vcont_probe (rs
);
11749 if (packet_support (PACKET_vCont
) == PACKET_ENABLE
11750 && rs
->supports_vCont
.r
)
11754 warning (_("Range stepping is not supported by the current target"));
11759 _initialize_remote (void)
11761 struct remote_state
*rs
;
11762 struct cmd_list_element
*cmd
;
11763 const char *cmd_name
;
11765 /* architecture specific data */
11766 remote_gdbarch_data_handle
=
11767 gdbarch_data_register_post_init (init_remote_state
);
11768 remote_g_packet_data_handle
=
11769 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
11771 /* Initialize the per-target state. At the moment there is only one
11772 of these, not one per target. Only one target is active at a
11774 remote_state
= new_remote_state ();
11776 init_remote_ops ();
11777 add_target (&remote_ops
);
11779 init_extended_remote_ops ();
11780 add_target (&extended_remote_ops
);
11782 /* Hook into new objfile notification. */
11783 observer_attach_new_objfile (remote_new_objfile
);
11784 /* We're no longer interested in notification events of an inferior
11786 observer_attach_inferior_exit (discard_pending_stop_replies
);
11788 /* Set up signal handlers. */
11789 async_sigint_remote_token
=
11790 create_async_signal_handler (async_remote_interrupt
, NULL
);
11791 async_sigint_remote_twice_token
=
11792 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11795 init_remote_threadtests ();
11798 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
11799 /* set/show remote ... */
11801 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11802 Remote protocol specific variables\n\
11803 Configure various remote-protocol specific variables such as\n\
11804 the packets being used"),
11805 &remote_set_cmdlist
, "set remote ",
11806 0 /* allow-unknown */, &setlist
);
11807 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11808 Remote protocol specific variables\n\
11809 Configure various remote-protocol specific variables such as\n\
11810 the packets being used"),
11811 &remote_show_cmdlist
, "show remote ",
11812 0 /* allow-unknown */, &showlist
);
11814 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11815 Compare section data on target to the exec file.\n\
11816 Argument is a single section name (default: all loaded sections).\n\
11817 To compare only read-only loaded sections, specify the -r option."),
11820 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11821 Send an arbitrary packet to a remote target.\n\
11822 maintenance packet TEXT\n\
11823 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11824 this command sends the string TEXT to the inferior, and displays the\n\
11825 response packet. GDB supplies the initial `$' character, and the\n\
11826 terminating `#' character and checksum."),
11829 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11830 Set whether to send break if interrupted."), _("\
11831 Show whether to send break if interrupted."), _("\
11832 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11833 set_remotebreak
, show_remotebreak
,
11834 &setlist
, &showlist
);
11835 cmd_name
= "remotebreak";
11836 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11837 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11838 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11839 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11840 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11842 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11843 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11845 Set interrupt sequence to remote target."), _("\
11846 Show interrupt sequence to remote target."), _("\
11847 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11848 NULL
, show_interrupt_sequence
,
11849 &remote_set_cmdlist
,
11850 &remote_show_cmdlist
);
11852 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11853 &interrupt_on_connect
, _("\
11854 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11855 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11856 If set, interrupt sequence is sent to remote target."),
11858 &remote_set_cmdlist
, &remote_show_cmdlist
);
11860 /* Install commands for configuring memory read/write packets. */
11862 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11863 Set the maximum number of bytes per memory write packet (deprecated)."),
11865 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11866 Show the maximum number of bytes per memory write packet (deprecated)."),
11868 add_cmd ("memory-write-packet-size", no_class
,
11869 set_memory_write_packet_size
, _("\
11870 Set the maximum number of bytes per memory-write packet.\n\
11871 Specify the number of bytes in a packet or 0 (zero) for the\n\
11872 default packet size. The actual limit is further reduced\n\
11873 dependent on the target. Specify ``fixed'' to disable the\n\
11874 further restriction and ``limit'' to enable that restriction."),
11875 &remote_set_cmdlist
);
11876 add_cmd ("memory-read-packet-size", no_class
,
11877 set_memory_read_packet_size
, _("\
11878 Set the maximum number of bytes per memory-read packet.\n\
11879 Specify the number of bytes in a packet or 0 (zero) for the\n\
11880 default packet size. The actual limit is further reduced\n\
11881 dependent on the target. Specify ``fixed'' to disable the\n\
11882 further restriction and ``limit'' to enable that restriction."),
11883 &remote_set_cmdlist
);
11884 add_cmd ("memory-write-packet-size", no_class
,
11885 show_memory_write_packet_size
,
11886 _("Show the maximum number of bytes per memory-write packet."),
11887 &remote_show_cmdlist
);
11888 add_cmd ("memory-read-packet-size", no_class
,
11889 show_memory_read_packet_size
,
11890 _("Show the maximum number of bytes per memory-read packet."),
11891 &remote_show_cmdlist
);
11893 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11894 &remote_hw_watchpoint_limit
, _("\
11895 Set the maximum number of target hardware watchpoints."), _("\
11896 Show the maximum number of target hardware watchpoints."), _("\
11897 Specify a negative limit for unlimited."),
11898 NULL
, NULL
, /* FIXME: i18n: The maximum
11899 number of target hardware
11900 watchpoints is %s. */
11901 &remote_set_cmdlist
, &remote_show_cmdlist
);
11902 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
11903 &remote_hw_watchpoint_length_limit
, _("\
11904 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11905 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11906 Specify a negative limit for unlimited."),
11907 NULL
, NULL
, /* FIXME: i18n: The maximum
11908 length (in bytes) of a target
11909 hardware watchpoint is %s. */
11910 &remote_set_cmdlist
, &remote_show_cmdlist
);
11911 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
11912 &remote_hw_breakpoint_limit
, _("\
11913 Set the maximum number of target hardware breakpoints."), _("\
11914 Show the maximum number of target hardware breakpoints."), _("\
11915 Specify a negative limit for unlimited."),
11916 NULL
, NULL
, /* FIXME: i18n: The maximum
11917 number of target hardware
11918 breakpoints is %s. */
11919 &remote_set_cmdlist
, &remote_show_cmdlist
);
11921 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
11922 &remote_address_size
, _("\
11923 Set the maximum size of the address (in bits) in a memory packet."), _("\
11924 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
11926 NULL
, /* FIXME: i18n: */
11927 &setlist
, &showlist
);
11929 init_all_packet_configs ();
11931 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
11932 "X", "binary-download", 1);
11934 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
11935 "vCont", "verbose-resume", 0);
11937 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
11938 "QPassSignals", "pass-signals", 0);
11940 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
11941 "QProgramSignals", "program-signals", 0);
11943 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
11944 "qSymbol", "symbol-lookup", 0);
11946 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
11947 "P", "set-register", 1);
11949 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
11950 "p", "fetch-register", 1);
11952 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
11953 "Z0", "software-breakpoint", 0);
11955 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
11956 "Z1", "hardware-breakpoint", 0);
11958 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
11959 "Z2", "write-watchpoint", 0);
11961 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
11962 "Z3", "read-watchpoint", 0);
11964 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
11965 "Z4", "access-watchpoint", 0);
11967 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
11968 "qXfer:auxv:read", "read-aux-vector", 0);
11970 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
11971 "qXfer:features:read", "target-features", 0);
11973 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
11974 "qXfer:libraries:read", "library-info", 0);
11976 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
11977 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
11979 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
11980 "qXfer:memory-map:read", "memory-map", 0);
11982 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
11983 "qXfer:spu:read", "read-spu-object", 0);
11985 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
11986 "qXfer:spu:write", "write-spu-object", 0);
11988 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
11989 "qXfer:osdata:read", "osdata", 0);
11991 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
11992 "qXfer:threads:read", "threads", 0);
11994 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
11995 "qXfer:siginfo:read", "read-siginfo-object", 0);
11997 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
11998 "qXfer:siginfo:write", "write-siginfo-object", 0);
12000 add_packet_config_cmd
12001 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
12002 "qXfer:traceframe-info:read", "traceframe-info", 0);
12004 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
12005 "qXfer:uib:read", "unwind-info-block", 0);
12007 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
12008 "qGetTLSAddr", "get-thread-local-storage-address",
12011 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
12012 "qGetTIBAddr", "get-thread-information-block-address",
12015 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
12016 "bc", "reverse-continue", 0);
12018 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
12019 "bs", "reverse-step", 0);
12021 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
12022 "qSupported", "supported-packets", 0);
12024 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
12025 "qSearch:memory", "search-memory", 0);
12027 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
12028 "qTStatus", "trace-status", 0);
12030 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
12031 "vFile:open", "hostio-open", 0);
12033 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
12034 "vFile:pread", "hostio-pread", 0);
12036 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
12037 "vFile:pwrite", "hostio-pwrite", 0);
12039 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
12040 "vFile:close", "hostio-close", 0);
12042 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
12043 "vFile:unlink", "hostio-unlink", 0);
12045 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
12046 "vFile:readlink", "hostio-readlink", 0);
12048 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
12049 "vAttach", "attach", 0);
12051 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
12054 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
12055 "QStartNoAckMode", "noack", 0);
12057 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
12058 "vKill", "kill", 0);
12060 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
12061 "qAttached", "query-attached", 0);
12063 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
12064 "ConditionalTracepoints",
12065 "conditional-tracepoints", 0);
12067 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
12068 "ConditionalBreakpoints",
12069 "conditional-breakpoints", 0);
12071 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
12072 "BreakpointCommands",
12073 "breakpoint-commands", 0);
12075 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
12076 "FastTracepoints", "fast-tracepoints", 0);
12078 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
12079 "TracepointSource", "TracepointSource", 0);
12081 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
12082 "QAllow", "allow", 0);
12084 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
12085 "StaticTracepoints", "static-tracepoints", 0);
12087 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
12088 "InstallInTrace", "install-in-trace", 0);
12090 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
12091 "qXfer:statictrace:read", "read-sdata-object", 0);
12093 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
12094 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
12096 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
12097 "QDisableRandomization", "disable-randomization", 0);
12099 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
12100 "QAgent", "agent", 0);
12102 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
12103 "QTBuffer:size", "trace-buffer-size", 0);
12105 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
12106 "Qbtrace:off", "disable-btrace", 0);
12108 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
12109 "Qbtrace:bts", "enable-btrace", 0);
12111 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
12112 "qXfer:btrace", "read-btrace", 0);
12114 /* Assert that we've registered commands for all packet configs. */
12118 for (i
= 0; i
< PACKET_MAX
; i
++)
12120 /* Ideally all configs would have a command associated. Some
12121 still don't though. */
12126 case PACKET_QNonStop
:
12127 case PACKET_multiprocess_feature
:
12128 case PACKET_EnableDisableTracepoints_feature
:
12129 case PACKET_tracenz_feature
:
12130 case PACKET_DisconnectedTracing_feature
:
12131 case PACKET_augmented_libraries_svr4_read_feature
:
12133 /* Additions to this list need to be well justified:
12134 pre-existing packets are OK; new packets are not. */
12142 /* This catches both forgetting to add a config command, and
12143 forgetting to remove a packet from the exception list. */
12144 gdb_assert (excepted
== (remote_protocol_packets
[i
].name
== NULL
));
12148 /* Keep the old ``set remote Z-packet ...'' working. Each individual
12149 Z sub-packet has its own set and show commands, but users may
12150 have sets to this variable in their .gdbinit files (or in their
12152 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
12153 &remote_Z_packet_detect
, _("\
12154 Set use of remote protocol `Z' packets"), _("\
12155 Show use of remote protocol `Z' packets "), _("\
12156 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
12158 set_remote_protocol_Z_packet_cmd
,
12159 show_remote_protocol_Z_packet_cmd
,
12160 /* FIXME: i18n: Use of remote protocol
12161 `Z' packets is %s. */
12162 &remote_set_cmdlist
, &remote_show_cmdlist
);
12164 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
12165 Manipulate files on the remote system\n\
12166 Transfer files to and from the remote target system."),
12167 &remote_cmdlist
, "remote ",
12168 0 /* allow-unknown */, &cmdlist
);
12170 add_cmd ("put", class_files
, remote_put_command
,
12171 _("Copy a local file to the remote system."),
12174 add_cmd ("get", class_files
, remote_get_command
,
12175 _("Copy a remote file to the local system."),
12178 add_cmd ("delete", class_files
, remote_delete_command
,
12179 _("Delete a remote file."),
12182 remote_exec_file
= xstrdup ("");
12183 add_setshow_string_noescape_cmd ("exec-file", class_files
,
12184 &remote_exec_file
, _("\
12185 Set the remote pathname for \"run\""), _("\
12186 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
12187 &remote_set_cmdlist
, &remote_show_cmdlist
);
12189 add_setshow_boolean_cmd ("range-stepping", class_run
,
12190 &use_range_stepping
, _("\
12191 Enable or disable range stepping."), _("\
12192 Show whether target-assisted range stepping is enabled."), _("\
12193 If on, and the target supports it, when stepping a source line, GDB\n\
12194 tells the target to step the corresponding range of addresses itself instead\n\
12195 of issuing multiple single-steps. This speeds up source level\n\
12196 stepping. If off, GDB always issues single-steps, even if range\n\
12197 stepping is supported by the target. The default is on."),
12198 set_range_stepping
,
12199 show_range_stepping
,
12203 /* Eventually initialize fileio. See fileio.c */
12204 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
12206 /* Take advantage of the fact that the TID field is not used, to tag
12207 special ptids with it set to != 0. */
12208 magic_null_ptid
= ptid_build (42000, -1, 1);
12209 not_sent_ptid
= ptid_build (42000, -2, 1);
12210 any_thread_ptid
= ptid_build (42000, 0, 1);
12212 target_buf_size
= 2048;
12213 target_buf
= xmalloc (target_buf_size
);