1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2013 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. */
23 #include "gdb_string.h"
29 #include "exceptions.h"
31 /*#include "terminal.h" */
34 #include "gdb-stabs.h"
35 #include "gdbthread.h"
37 #include "remote-notif.h"
40 #include "gdb_assert.h"
43 #include "cli/cli-decode.h"
44 #include "cli/cli-setshow.h"
45 #include "target-descriptions.h"
47 #include "filestuff.h"
52 #include "event-loop.h"
53 #include "event-top.h"
59 #include "gdbcore.h" /* for exec_bfd */
61 #include "remote-fileio.h"
62 #include "gdb/fileio.h"
64 #include "xml-support.h"
66 #include "memory-map.h"
68 #include "tracepoint.h"
74 /* Temp hacks for tracepoint encoding migration. */
75 static char *target_buf
;
76 static long target_buf_size
;
78 /* The size to align memory write packets, when practical. The protocol
79 does not guarantee any alignment, and gdb will generate short
80 writes and unaligned writes, but even as a best-effort attempt this
81 can improve bulk transfers. For instance, if a write is misaligned
82 relative to the target's data bus, the stub may need to make an extra
83 round trip fetching data from the target. This doesn't make a
84 huge difference, but it's easy to do, so we try to be helpful.
86 The alignment chosen is arbitrary; usually data bus width is
87 important here, not the possibly larger cache line size. */
88 enum { REMOTE_ALIGN_WRITES
= 16 };
90 /* Prototypes for local functions. */
91 static void async_cleanup_sigint_signal_handler (void *dummy
);
92 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
93 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
94 int forever
, int *is_notif
);
96 static void async_handle_remote_sigint (int);
97 static void async_handle_remote_sigint_twice (int);
99 static void remote_files_info (struct target_ops
*ignore
);
101 static void remote_prepare_to_store (struct regcache
*regcache
);
103 static void remote_open (char *name
, int from_tty
);
105 static void extended_remote_open (char *name
, int from_tty
);
107 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
);
109 static void remote_close (void);
111 static void remote_mourn (struct target_ops
*ops
);
113 static void extended_remote_restart (void);
115 static void extended_remote_mourn (struct target_ops
*);
117 static void remote_mourn_1 (struct target_ops
*);
119 static void remote_send (char **buf
, long *sizeof_buf_p
);
121 static int readchar (int timeout
);
123 static void remote_serial_write (const char *str
, int len
);
125 static void remote_kill (struct target_ops
*ops
);
127 static int tohex (int nib
);
129 static int remote_can_async_p (void);
131 static int remote_is_async_p (void);
133 static void remote_async (void (*callback
) (enum inferior_event_type event_type
,
134 void *context
), void *context
);
136 static void remote_detach (struct target_ops
*ops
, char *args
, int from_tty
);
138 static void sync_remote_interrupt_twice (int signo
);
140 static void interrupt_query (void);
142 static void set_general_thread (struct ptid ptid
);
143 static void set_continue_thread (struct ptid ptid
);
145 static void get_offsets (void);
147 static void skip_frame (void);
149 static long read_frame (char **buf_p
, long *sizeof_buf
);
151 static int hexnumlen (ULONGEST num
);
153 static void init_remote_ops (void);
155 static void init_extended_remote_ops (void);
157 static void remote_stop (ptid_t
);
159 static int ishex (int ch
, int *val
);
161 static int stubhex (int ch
);
163 static int hexnumstr (char *, ULONGEST
);
165 static int hexnumnstr (char *, ULONGEST
, int);
167 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
169 static void print_packet (char *);
171 static void compare_sections_command (char *, int);
173 static void packet_command (char *, int);
175 static int stub_unpack_int (char *buff
, int fieldlength
);
177 static ptid_t
remote_current_thread (ptid_t oldptid
);
179 static void remote_find_new_threads (void);
181 static int fromhex (int a
);
183 static int putpkt_binary (char *buf
, int cnt
);
185 static void check_binary_download (CORE_ADDR addr
);
187 struct packet_config
;
189 static void show_packet_config_cmd (struct packet_config
*config
);
191 static void update_packet_config (struct packet_config
*config
);
193 static void set_remote_protocol_packet_cmd (char *args
, int from_tty
,
194 struct cmd_list_element
*c
);
196 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
198 struct cmd_list_element
*c
,
201 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
202 static ptid_t
read_ptid (char *buf
, char **obuf
);
204 static void remote_set_permissions (void);
207 static int remote_get_trace_status (struct trace_status
*ts
);
209 static int remote_upload_tracepoints (struct uploaded_tp
**utpp
);
211 static int remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
);
213 static void remote_query_supported (void);
215 static void remote_check_symbols (void);
217 void _initialize_remote (void);
220 static void stop_reply_xfree (struct stop_reply
*);
221 static void remote_parse_stop_reply (char *, struct stop_reply
*);
222 static void push_stop_reply (struct stop_reply
*);
223 static void discard_pending_stop_replies (struct inferior
*);
224 static int peek_stop_reply (ptid_t ptid
);
226 static void remote_async_inferior_event_handler (gdb_client_data
);
228 static void remote_terminal_ours (void);
230 static int remote_read_description_p (struct target_ops
*target
);
232 static void remote_console_output (char *msg
);
234 static int remote_supports_cond_breakpoints (void);
236 static int remote_can_run_breakpoint_commands (void);
240 static struct cmd_list_element
*remote_cmdlist
;
242 /* For "set remote" and "show remote". */
244 static struct cmd_list_element
*remote_set_cmdlist
;
245 static struct cmd_list_element
*remote_show_cmdlist
;
247 /* Stub vCont actions support.
249 Each field is a boolean flag indicating whether the stub reports
250 support for the corresponding action. */
252 struct vCont_action_support
261 /* Controls whether GDB is willing to use range stepping. */
263 static int use_range_stepping
= 1;
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 the stub reported support for multi-process
309 int multi_process_aware
;
311 /* True if we resumed the target and we're waiting for the target to
312 stop. In the mean time, we can't start another command/query.
313 The remote server wouldn't be ready to process it, so we'd
314 timeout waiting for a reply that would never come and eventually
315 we'd close the connection. This can happen in asynchronous mode
316 because we allow GDB commands while the target is running. */
317 int waiting_for_stop_reply
;
319 /* True if the stub reports support for non-stop mode. */
322 /* The status of the stub support for the various vCont actions. */
323 struct vCont_action_support supports_vCont
;
325 /* True if the stub reports support for conditional tracepoints. */
326 int cond_tracepoints
;
328 /* True if the stub reports support for target-side breakpoint
330 int cond_breakpoints
;
332 /* True if the stub reports support for target-side breakpoint
334 int breakpoint_commands
;
336 /* True if the stub reports support for fast tracepoints. */
337 int fast_tracepoints
;
339 /* True if the stub reports support for static tracepoints. */
340 int static_tracepoints
;
342 /* True if the stub reports support for installing tracepoint while
344 int install_in_trace
;
346 /* True if the stub can continue running a trace while GDB is
348 int disconnected_tracing
;
350 /* True if the stub reports support for enabling and disabling
351 tracepoints while a trace experiment is running. */
352 int enable_disable_tracepoints
;
354 /* True if the stub can collect strings using tracenz bytecode. */
357 /* True if the stub supports qXfer:libraries-svr4:read with a
359 int augmented_libraries_svr4_read
;
361 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
362 responded to that. */
365 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
366 remote_open knows that we don't have a file open when the program
368 struct serial
*remote_desc
;
370 /* These are the threads which we last sent to the remote system. The
371 TID member will be -1 for all or -2 for not sent yet. */
372 ptid_t general_thread
;
373 ptid_t continue_thread
;
375 /* This is the traceframe which we last selected on the remote system.
376 It will be -1 if no traceframe is selected. */
377 int remote_traceframe_number
;
379 char *last_pass_packet
;
381 /* The last QProgramSignals packet sent to the target. We bypass
382 sending a new program signals list down to the target if the new
383 packet is exactly the same as the last we sent. IOW, we only let
384 the target know about program signals list changes. */
385 char *last_program_signals_packet
;
387 enum gdb_signal last_sent_signal
;
391 char *finished_object
;
392 char *finished_annex
;
393 ULONGEST finished_offset
;
395 /* Should we try the 'ThreadInfo' query packet?
397 This variable (NOT available to the user: auto-detect only!)
398 determines whether GDB will use the new, simpler "ThreadInfo"
399 query or the older, more complex syntax for thread queries.
400 This is an auto-detect variable (set to true at each connect,
401 and set to false when the target fails to recognize it). */
402 int use_threadinfo_query
;
403 int use_threadextra_query
;
406 /* Private data that we'll store in (struct thread_info)->private. */
407 struct private_thread_info
414 free_private_thread_info (struct private_thread_info
*info
)
420 /* Returns true if the multi-process extensions are in effect. */
422 remote_multi_process_p (struct remote_state
*rs
)
424 return rs
->multi_process_aware
;
427 /* This data could be associated with a target, but we do not always
428 have access to the current target when we need it, so for now it is
429 static. This will be fine for as long as only one target is in use
431 static struct remote_state
*remote_state
;
433 static struct remote_state
*
434 get_remote_state_raw (void)
439 /* Allocate a new struct remote_state with xmalloc, initialize it, and
442 static struct remote_state
*
443 new_remote_state (void)
445 struct remote_state
*result
= XCNEW (struct remote_state
);
447 /* The default buffer size is unimportant; it will be expanded
448 whenever a larger buffer is needed. */
449 result
->buf_size
= 400;
450 result
->buf
= xmalloc (result
->buf_size
);
451 result
->remote_traceframe_number
= -1;
452 result
->last_sent_signal
= GDB_SIGNAL_0
;
457 /* Description of the remote protocol for a given architecture. */
461 long offset
; /* Offset into G packet. */
462 long regnum
; /* GDB's internal register number. */
463 LONGEST pnum
; /* Remote protocol register number. */
464 int in_g_packet
; /* Always part of G packet. */
465 /* long size in bytes; == register_size (target_gdbarch (), regnum);
467 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
471 struct remote_arch_state
473 /* Description of the remote protocol registers. */
474 long sizeof_g_packet
;
476 /* Description of the remote protocol registers indexed by REGNUM
477 (making an array gdbarch_num_regs in size). */
478 struct packet_reg
*regs
;
480 /* This is the size (in chars) of the first response to the ``g''
481 packet. It is used as a heuristic when determining the maximum
482 size of memory-read and memory-write packets. A target will
483 typically only reserve a buffer large enough to hold the ``g''
484 packet. The size does not include packet overhead (headers and
486 long actual_register_packet_size
;
488 /* This is the maximum size (in chars) of a non read/write packet.
489 It is also used as a cap on the size of read/write packets. */
490 long remote_packet_size
;
493 /* Utility: generate error from an incoming stub packet. */
495 trace_error (char *buf
)
498 return; /* not an error msg */
501 case '1': /* malformed packet error */
502 if (*++buf
== '0') /* general case: */
503 error (_("remote.c: error in outgoing packet."));
505 error (_("remote.c: error in outgoing packet at field #%ld."),
506 strtol (buf
, NULL
, 16));
508 error (_("Target returns error code '%s'."), buf
);
512 /* Utility: wait for reply from stub, while accepting "O" packets. */
514 remote_get_noisy_reply (char **buf_p
,
517 do /* Loop on reply from remote stub. */
521 QUIT
; /* Allow user to bail out with ^C. */
522 getpkt (buf_p
, sizeof_buf
, 0);
526 else if (strncmp (buf
, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
529 CORE_ADDR from
, to
, org_to
;
531 int adjusted_size
= 0;
532 volatile struct gdb_exception ex
;
534 p
= buf
+ strlen ("qRelocInsn:");
535 pp
= unpack_varlen_hex (p
, &ul
);
537 error (_("invalid qRelocInsn packet: %s"), buf
);
541 unpack_varlen_hex (p
, &ul
);
546 TRY_CATCH (ex
, RETURN_MASK_ALL
)
548 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
552 adjusted_size
= to
- org_to
;
554 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
557 else if (ex
.reason
< 0 && ex
.error
== MEMORY_ERROR
)
559 /* Propagate memory errors silently back to the target.
560 The stub may have limited the range of addresses we
561 can write to, for example. */
566 /* Something unexpectedly bad happened. Be verbose so
567 we can tell what, and propagate the error back to the
568 stub, so it doesn't get stuck waiting for a
570 exception_fprintf (gdb_stderr
, ex
,
571 _("warning: relocating instruction: "));
575 else if (buf
[0] == 'O' && buf
[1] != 'K')
576 remote_console_output (buf
+ 1); /* 'O' message from stub */
578 return buf
; /* Here's the actual reply. */
583 /* Handle for retreving the remote protocol data from gdbarch. */
584 static struct gdbarch_data
*remote_gdbarch_data_handle
;
586 static struct remote_arch_state
*
587 get_remote_arch_state (void)
589 return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
);
592 /* Fetch the global remote target state. */
594 static struct remote_state
*
595 get_remote_state (void)
597 /* Make sure that the remote architecture state has been
598 initialized, because doing so might reallocate rs->buf. Any
599 function which calls getpkt also needs to be mindful of changes
600 to rs->buf, but this call limits the number of places which run
602 get_remote_arch_state ();
604 return get_remote_state_raw ();
608 compare_pnums (const void *lhs_
, const void *rhs_
)
610 const struct packet_reg
* const *lhs
= lhs_
;
611 const struct packet_reg
* const *rhs
= rhs_
;
613 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
615 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
622 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
624 int regnum
, num_remote_regs
, offset
;
625 struct packet_reg
**remote_regs
;
627 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
629 struct packet_reg
*r
= ®s
[regnum
];
631 if (register_size (gdbarch
, regnum
) == 0)
632 /* Do not try to fetch zero-sized (placeholder) registers. */
635 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
640 /* Define the g/G packet format as the contents of each register
641 with a remote protocol number, in order of ascending protocol
644 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
645 * sizeof (struct packet_reg
*));
646 for (num_remote_regs
= 0, regnum
= 0;
647 regnum
< gdbarch_num_regs (gdbarch
);
649 if (regs
[regnum
].pnum
!= -1)
650 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
652 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
655 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
657 remote_regs
[regnum
]->in_g_packet
= 1;
658 remote_regs
[regnum
]->offset
= offset
;
659 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
665 /* Given the architecture described by GDBARCH, return the remote
666 protocol register's number and the register's offset in the g/G
667 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
668 If the target does not have a mapping for REGNUM, return false,
669 otherwise, return true. */
672 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
673 int *pnum
, int *poffset
)
676 struct packet_reg
*regs
;
677 struct cleanup
*old_chain
;
679 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
681 regs
= xcalloc (gdbarch_num_regs (gdbarch
), sizeof (struct packet_reg
));
682 old_chain
= make_cleanup (xfree
, regs
);
684 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
686 *pnum
= regs
[regnum
].pnum
;
687 *poffset
= regs
[regnum
].offset
;
689 do_cleanups (old_chain
);
695 init_remote_state (struct gdbarch
*gdbarch
)
697 struct remote_state
*rs
= get_remote_state_raw ();
698 struct remote_arch_state
*rsa
;
700 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
702 /* Use the architecture to build a regnum<->pnum table, which will be
703 1:1 unless a feature set specifies otherwise. */
704 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
705 gdbarch_num_regs (gdbarch
),
708 /* Record the maximum possible size of the g packet - it may turn out
710 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
712 /* Default maximum number of characters in a packet body. Many
713 remote stubs have a hardwired buffer size of 400 bytes
714 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
715 as the maximum packet-size to ensure that the packet and an extra
716 NUL character can always fit in the buffer. This stops GDB
717 trashing stubs that try to squeeze an extra NUL into what is
718 already a full buffer (As of 1999-12-04 that was most stubs). */
719 rsa
->remote_packet_size
= 400 - 1;
721 /* This one is filled in when a ``g'' packet is received. */
722 rsa
->actual_register_packet_size
= 0;
724 /* Should rsa->sizeof_g_packet needs more space than the
725 default, adjust the size accordingly. Remember that each byte is
726 encoded as two characters. 32 is the overhead for the packet
727 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
728 (``$NN:G...#NN'') is a better guess, the below has been padded a
730 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
731 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
733 /* Make sure that the packet buffer is plenty big enough for
734 this architecture. */
735 if (rs
->buf_size
< rsa
->remote_packet_size
)
737 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
738 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
744 /* Return the current allowed size of a remote packet. This is
745 inferred from the current architecture, and should be used to
746 limit the length of outgoing packets. */
748 get_remote_packet_size (void)
750 struct remote_state
*rs
= get_remote_state ();
751 struct remote_arch_state
*rsa
= get_remote_arch_state ();
753 if (rs
->explicit_packet_size
)
754 return rs
->explicit_packet_size
;
756 return rsa
->remote_packet_size
;
759 static struct packet_reg
*
760 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
762 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
766 struct packet_reg
*r
= &rsa
->regs
[regnum
];
768 gdb_assert (r
->regnum
== regnum
);
773 static struct packet_reg
*
774 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
778 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
780 struct packet_reg
*r
= &rsa
->regs
[i
];
788 /* FIXME: graces/2002-08-08: These variables should eventually be
789 bound to an instance of the target object (as in gdbarch-tdep()),
790 when such a thing exists. */
792 /* This is set to the data address of the access causing the target
793 to stop for a watchpoint. */
794 static CORE_ADDR remote_watch_data_address
;
796 /* This is non-zero if target stopped for a watchpoint. */
797 static int remote_stopped_by_watchpoint_p
;
799 static struct target_ops remote_ops
;
801 static struct target_ops extended_remote_ops
;
803 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
804 ``forever'' still use the normal timeout mechanism. This is
805 currently used by the ASYNC code to guarentee that target reads
806 during the initial connect always time-out. Once getpkt has been
807 modified to return a timeout indication and, in turn
808 remote_wait()/wait_for_inferior() have gained a timeout parameter
810 static int wait_forever_enabled_p
= 1;
812 /* Allow the user to specify what sequence to send to the remote
813 when he requests a program interruption: Although ^C is usually
814 what remote systems expect (this is the default, here), it is
815 sometimes preferable to send a break. On other systems such
816 as the Linux kernel, a break followed by g, which is Magic SysRq g
817 is required in order to interrupt the execution. */
818 const char interrupt_sequence_control_c
[] = "Ctrl-C";
819 const char interrupt_sequence_break
[] = "BREAK";
820 const char interrupt_sequence_break_g
[] = "BREAK-g";
821 static const char *const interrupt_sequence_modes
[] =
823 interrupt_sequence_control_c
,
824 interrupt_sequence_break
,
825 interrupt_sequence_break_g
,
828 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
831 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
832 struct cmd_list_element
*c
,
835 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
836 fprintf_filtered (file
,
837 _("Send the ASCII ETX character (Ctrl-c) "
838 "to the remote target to interrupt the "
839 "execution of the program.\n"));
840 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
841 fprintf_filtered (file
,
842 _("send a break signal to the remote target "
843 "to interrupt the execution of the program.\n"));
844 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
845 fprintf_filtered (file
,
846 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
847 "the remote target to interrupt the execution "
848 "of Linux kernel.\n"));
850 internal_error (__FILE__
, __LINE__
,
851 _("Invalid value for interrupt_sequence_mode: %s."),
852 interrupt_sequence_mode
);
855 /* This boolean variable specifies whether interrupt_sequence is sent
856 to the remote target when gdb connects to it.
857 This is mostly needed when you debug the Linux kernel: The Linux kernel
858 expects BREAK g which is Magic SysRq g for connecting gdb. */
859 static int interrupt_on_connect
= 0;
861 /* This variable is used to implement the "set/show remotebreak" commands.
862 Since these commands are now deprecated in favor of "set/show remote
863 interrupt-sequence", it no longer has any effect on the code. */
864 static int remote_break
;
867 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
870 interrupt_sequence_mode
= interrupt_sequence_break
;
872 interrupt_sequence_mode
= interrupt_sequence_control_c
;
876 show_remotebreak (struct ui_file
*file
, int from_tty
,
877 struct cmd_list_element
*c
,
882 /* This variable sets the number of bits in an address that are to be
883 sent in a memory ("M" or "m") packet. Normally, after stripping
884 leading zeros, the entire address would be sent. This variable
885 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
886 initial implementation of remote.c restricted the address sent in
887 memory packets to ``host::sizeof long'' bytes - (typically 32
888 bits). Consequently, for 64 bit targets, the upper 32 bits of an
889 address was never sent. Since fixing this bug may cause a break in
890 some remote targets this variable is principly provided to
891 facilitate backward compatibility. */
893 static unsigned int remote_address_size
;
895 /* Temporary to track who currently owns the terminal. See
896 remote_terminal_* for more details. */
898 static int remote_async_terminal_ours_p
;
900 /* The executable file to use for "run" on the remote side. */
902 static char *remote_exec_file
= "";
905 /* User configurable variables for the number of characters in a
906 memory read/write packet. MIN (rsa->remote_packet_size,
907 rsa->sizeof_g_packet) is the default. Some targets need smaller
908 values (fifo overruns, et.al.) and some users need larger values
909 (speed up transfers). The variables ``preferred_*'' (the user
910 request), ``current_*'' (what was actually set) and ``forced_*''
911 (Positive - a soft limit, negative - a hard limit). */
913 struct memory_packet_config
920 /* Compute the current size of a read/write packet. Since this makes
921 use of ``actual_register_packet_size'' the computation is dynamic. */
924 get_memory_packet_size (struct memory_packet_config
*config
)
926 struct remote_state
*rs
= get_remote_state ();
927 struct remote_arch_state
*rsa
= get_remote_arch_state ();
929 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
930 law?) that some hosts don't cope very well with large alloca()
931 calls. Eventually the alloca() code will be replaced by calls to
932 xmalloc() and make_cleanups() allowing this restriction to either
933 be lifted or removed. */
934 #ifndef MAX_REMOTE_PACKET_SIZE
935 #define MAX_REMOTE_PACKET_SIZE 16384
937 /* NOTE: 20 ensures we can write at least one byte. */
938 #ifndef MIN_REMOTE_PACKET_SIZE
939 #define MIN_REMOTE_PACKET_SIZE 20
944 if (config
->size
<= 0)
945 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
947 what_they_get
= config
->size
;
951 what_they_get
= get_remote_packet_size ();
952 /* Limit the packet to the size specified by the user. */
954 && what_they_get
> config
->size
)
955 what_they_get
= config
->size
;
957 /* Limit it to the size of the targets ``g'' response unless we have
958 permission from the stub to use a larger packet size. */
959 if (rs
->explicit_packet_size
== 0
960 && rsa
->actual_register_packet_size
> 0
961 && what_they_get
> rsa
->actual_register_packet_size
)
962 what_they_get
= rsa
->actual_register_packet_size
;
964 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
965 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
966 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
967 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
969 /* Make sure there is room in the global buffer for this packet
970 (including its trailing NUL byte). */
971 if (rs
->buf_size
< what_they_get
+ 1)
973 rs
->buf_size
= 2 * what_they_get
;
974 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
977 return what_they_get
;
980 /* Update the size of a read/write packet. If they user wants
981 something really big then do a sanity check. */
984 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
986 int fixed_p
= config
->fixed_p
;
987 long size
= config
->size
;
990 error (_("Argument required (integer, `fixed' or `limited')."));
991 else if (strcmp (args
, "hard") == 0
992 || strcmp (args
, "fixed") == 0)
994 else if (strcmp (args
, "soft") == 0
995 || strcmp (args
, "limit") == 0)
1001 size
= strtoul (args
, &end
, 0);
1003 error (_("Invalid %s (bad syntax)."), config
->name
);
1005 /* Instead of explicitly capping the size of a packet to
1006 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
1007 instead allowed to set the size to something arbitrarily
1009 if (size
> MAX_REMOTE_PACKET_SIZE
)
1010 error (_("Invalid %s (too large)."), config
->name
);
1014 if (fixed_p
&& !config
->fixed_p
)
1016 if (! query (_("The target may not be able to correctly handle a %s\n"
1017 "of %ld bytes. Change the packet size? "),
1018 config
->name
, size
))
1019 error (_("Packet size not changed."));
1021 /* Update the config. */
1022 config
->fixed_p
= fixed_p
;
1023 config
->size
= size
;
1027 show_memory_packet_size (struct memory_packet_config
*config
)
1029 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
1030 if (config
->fixed_p
)
1031 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
1032 get_memory_packet_size (config
));
1034 printf_filtered (_("Packets are limited to %ld bytes.\n"),
1035 get_memory_packet_size (config
));
1038 static struct memory_packet_config memory_write_packet_config
=
1040 "memory-write-packet-size",
1044 set_memory_write_packet_size (char *args
, int from_tty
)
1046 set_memory_packet_size (args
, &memory_write_packet_config
);
1050 show_memory_write_packet_size (char *args
, int from_tty
)
1052 show_memory_packet_size (&memory_write_packet_config
);
1056 get_memory_write_packet_size (void)
1058 return get_memory_packet_size (&memory_write_packet_config
);
1061 static struct memory_packet_config memory_read_packet_config
=
1063 "memory-read-packet-size",
1067 set_memory_read_packet_size (char *args
, int from_tty
)
1069 set_memory_packet_size (args
, &memory_read_packet_config
);
1073 show_memory_read_packet_size (char *args
, int from_tty
)
1075 show_memory_packet_size (&memory_read_packet_config
);
1079 get_memory_read_packet_size (void)
1081 long size
= get_memory_packet_size (&memory_read_packet_config
);
1083 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1084 extra buffer size argument before the memory read size can be
1085 increased beyond this. */
1086 if (size
> get_remote_packet_size ())
1087 size
= get_remote_packet_size ();
1092 /* Generic configuration support for packets the stub optionally
1093 supports. Allows the user to specify the use of the packet as well
1094 as allowing GDB to auto-detect support in the remote stub. */
1098 PACKET_SUPPORT_UNKNOWN
= 0,
1103 struct packet_config
1107 enum auto_boolean detect
;
1108 enum packet_support support
;
1111 /* Analyze a packet's return value and update the packet config
1122 update_packet_config (struct packet_config
*config
)
1124 switch (config
->detect
)
1126 case AUTO_BOOLEAN_TRUE
:
1127 config
->support
= PACKET_ENABLE
;
1129 case AUTO_BOOLEAN_FALSE
:
1130 config
->support
= PACKET_DISABLE
;
1132 case AUTO_BOOLEAN_AUTO
:
1133 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1139 show_packet_config_cmd (struct packet_config
*config
)
1141 char *support
= "internal-error";
1143 switch (config
->support
)
1146 support
= "enabled";
1148 case PACKET_DISABLE
:
1149 support
= "disabled";
1151 case PACKET_SUPPORT_UNKNOWN
:
1152 support
= "unknown";
1155 switch (config
->detect
)
1157 case AUTO_BOOLEAN_AUTO
:
1158 printf_filtered (_("Support for the `%s' packet "
1159 "is auto-detected, currently %s.\n"),
1160 config
->name
, support
);
1162 case AUTO_BOOLEAN_TRUE
:
1163 case AUTO_BOOLEAN_FALSE
:
1164 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1165 config
->name
, support
);
1171 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1172 const char *title
, int legacy
)
1178 config
->name
= name
;
1179 config
->title
= title
;
1180 config
->detect
= AUTO_BOOLEAN_AUTO
;
1181 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1182 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1184 show_doc
= xstrprintf ("Show current use of remote "
1185 "protocol `%s' (%s) packet",
1187 /* set/show TITLE-packet {auto,on,off} */
1188 cmd_name
= xstrprintf ("%s-packet", title
);
1189 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1190 &config
->detect
, set_doc
,
1191 show_doc
, NULL
, /* help_doc */
1192 set_remote_protocol_packet_cmd
,
1193 show_remote_protocol_packet_cmd
,
1194 &remote_set_cmdlist
, &remote_show_cmdlist
);
1195 /* The command code copies the documentation strings. */
1198 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1203 legacy_name
= xstrprintf ("%s-packet", name
);
1204 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1205 &remote_set_cmdlist
);
1206 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1207 &remote_show_cmdlist
);
1211 static enum packet_result
1212 packet_check_result (const char *buf
)
1216 /* The stub recognized the packet request. Check that the
1217 operation succeeded. */
1219 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1221 /* "Enn" - definitly an error. */
1222 return PACKET_ERROR
;
1224 /* Always treat "E." as an error. This will be used for
1225 more verbose error messages, such as E.memtypes. */
1226 if (buf
[0] == 'E' && buf
[1] == '.')
1227 return PACKET_ERROR
;
1229 /* The packet may or may not be OK. Just assume it is. */
1233 /* The stub does not support the packet. */
1234 return PACKET_UNKNOWN
;
1237 static enum packet_result
1238 packet_ok (const char *buf
, struct packet_config
*config
)
1240 enum packet_result result
;
1242 result
= packet_check_result (buf
);
1247 /* The stub recognized the packet request. */
1248 switch (config
->support
)
1250 case PACKET_SUPPORT_UNKNOWN
:
1252 fprintf_unfiltered (gdb_stdlog
,
1253 "Packet %s (%s) is supported\n",
1254 config
->name
, config
->title
);
1255 config
->support
= PACKET_ENABLE
;
1257 case PACKET_DISABLE
:
1258 internal_error (__FILE__
, __LINE__
,
1259 _("packet_ok: attempt to use a disabled packet"));
1265 case PACKET_UNKNOWN
:
1266 /* The stub does not support the packet. */
1267 switch (config
->support
)
1270 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1271 /* If the stub previously indicated that the packet was
1272 supported then there is a protocol error.. */
1273 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1274 config
->name
, config
->title
);
1276 /* The user set it wrong. */
1277 error (_("Enabled packet %s (%s) not recognized by stub"),
1278 config
->name
, config
->title
);
1280 case PACKET_SUPPORT_UNKNOWN
:
1282 fprintf_unfiltered (gdb_stdlog
,
1283 "Packet %s (%s) is NOT supported\n",
1284 config
->name
, config
->title
);
1285 config
->support
= PACKET_DISABLE
;
1287 case PACKET_DISABLE
:
1309 PACKET_vFile_pwrite
,
1311 PACKET_vFile_unlink
,
1312 PACKET_vFile_readlink
,
1314 PACKET_qXfer_features
,
1315 PACKET_qXfer_libraries
,
1316 PACKET_qXfer_libraries_svr4
,
1317 PACKET_qXfer_memory_map
,
1318 PACKET_qXfer_spu_read
,
1319 PACKET_qXfer_spu_write
,
1320 PACKET_qXfer_osdata
,
1321 PACKET_qXfer_threads
,
1322 PACKET_qXfer_statictrace_read
,
1323 PACKET_qXfer_traceframe_info
,
1329 PACKET_QPassSignals
,
1330 PACKET_QProgramSignals
,
1331 PACKET_qSearch_memory
,
1334 PACKET_QStartNoAckMode
,
1336 PACKET_qXfer_siginfo_read
,
1337 PACKET_qXfer_siginfo_write
,
1339 PACKET_ConditionalTracepoints
,
1340 PACKET_ConditionalBreakpoints
,
1341 PACKET_BreakpointCommands
,
1342 PACKET_FastTracepoints
,
1343 PACKET_StaticTracepoints
,
1344 PACKET_InstallInTrace
,
1347 PACKET_TracepointSource
,
1350 PACKET_QDisableRandomization
,
1352 PACKET_QTBuffer_size
,
1355 PACKET_qXfer_btrace
,
1359 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1362 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1363 struct cmd_list_element
*c
)
1365 struct packet_config
*packet
;
1367 for (packet
= remote_protocol_packets
;
1368 packet
< &remote_protocol_packets
[PACKET_MAX
];
1371 if (&packet
->detect
== c
->var
)
1373 update_packet_config (packet
);
1377 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1382 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1383 struct cmd_list_element
*c
,
1386 struct packet_config
*packet
;
1388 for (packet
= remote_protocol_packets
;
1389 packet
< &remote_protocol_packets
[PACKET_MAX
];
1392 if (&packet
->detect
== c
->var
)
1394 show_packet_config_cmd (packet
);
1398 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1402 /* Should we try one of the 'Z' requests? */
1406 Z_PACKET_SOFTWARE_BP
,
1407 Z_PACKET_HARDWARE_BP
,
1414 /* For compatibility with older distributions. Provide a ``set remote
1415 Z-packet ...'' command that updates all the Z packet types. */
1417 static enum auto_boolean remote_Z_packet_detect
;
1420 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1421 struct cmd_list_element
*c
)
1425 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1427 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1428 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1433 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1434 struct cmd_list_element
*c
,
1439 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1441 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1445 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1446 static struct async_signal_handler
*async_sigint_remote_twice_token
;
1447 static struct async_signal_handler
*async_sigint_remote_token
;
1450 /* Asynchronous signal handle registered as event loop source for
1451 when we have pending events ready to be passed to the core. */
1453 static struct async_event_handler
*remote_async_inferior_event_token
;
1457 static ptid_t magic_null_ptid
;
1458 static ptid_t not_sent_ptid
;
1459 static ptid_t any_thread_ptid
;
1461 /* Find out if the stub attached to PID (and hence GDB should offer to
1462 detach instead of killing it when bailing out). */
1465 remote_query_attached (int pid
)
1467 struct remote_state
*rs
= get_remote_state ();
1468 size_t size
= get_remote_packet_size ();
1470 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1473 if (remote_multi_process_p (rs
))
1474 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1476 xsnprintf (rs
->buf
, size
, "qAttached");
1479 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1481 switch (packet_ok (rs
->buf
,
1482 &remote_protocol_packets
[PACKET_qAttached
]))
1485 if (strcmp (rs
->buf
, "1") == 0)
1489 warning (_("Remote failure reply: %s"), rs
->buf
);
1491 case PACKET_UNKNOWN
:
1498 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1499 has been invented by GDB, instead of reported by the target. Since
1500 we can be connected to a remote system before before knowing about
1501 any inferior, mark the target with execution when we find the first
1502 inferior. If ATTACHED is 1, then we had just attached to this
1503 inferior. If it is 0, then we just created this inferior. If it
1504 is -1, then try querying the remote stub to find out if it had
1505 attached to the inferior or not. */
1507 static struct inferior
*
1508 remote_add_inferior (int fake_pid_p
, int pid
, int attached
)
1510 struct inferior
*inf
;
1512 /* Check whether this process we're learning about is to be
1513 considered attached, or if is to be considered to have been
1514 spawned by the stub. */
1516 attached
= remote_query_attached (pid
);
1518 if (gdbarch_has_global_solist (target_gdbarch ()))
1520 /* If the target shares code across all inferiors, then every
1521 attach adds a new inferior. */
1522 inf
= add_inferior (pid
);
1524 /* ... and every inferior is bound to the same program space.
1525 However, each inferior may still have its own address
1527 inf
->aspace
= maybe_new_address_space ();
1528 inf
->pspace
= current_program_space
;
1532 /* In the traditional debugging scenario, there's a 1-1 match
1533 between program/address spaces. We simply bind the inferior
1534 to the program space's address space. */
1535 inf
= current_inferior ();
1536 inferior_appeared (inf
, pid
);
1539 inf
->attach_flag
= attached
;
1540 inf
->fake_pid_p
= fake_pid_p
;
1545 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1546 according to RUNNING. */
1549 remote_add_thread (ptid_t ptid
, int running
)
1553 set_executing (ptid
, running
);
1554 set_running (ptid
, running
);
1557 /* Come here when we learn about a thread id from the remote target.
1558 It may be the first time we hear about such thread, so take the
1559 opportunity to add it to GDB's thread list. In case this is the
1560 first time we're noticing its corresponding inferior, add it to
1561 GDB's inferior list as well. */
1564 remote_notice_new_inferior (ptid_t currthread
, int running
)
1566 /* If this is a new thread, add it to GDB's thread list.
1567 If we leave it up to WFI to do this, bad things will happen. */
1569 if (in_thread_list (currthread
) && is_exited (currthread
))
1571 /* We're seeing an event on a thread id we knew had exited.
1572 This has to be a new thread reusing the old id. Add it. */
1573 remote_add_thread (currthread
, running
);
1577 if (!in_thread_list (currthread
))
1579 struct inferior
*inf
= NULL
;
1580 int pid
= ptid_get_pid (currthread
);
1582 if (ptid_is_pid (inferior_ptid
)
1583 && pid
== ptid_get_pid (inferior_ptid
))
1585 /* inferior_ptid has no thread member yet. This can happen
1586 with the vAttach -> remote_wait,"TAAthread:" path if the
1587 stub doesn't support qC. This is the first stop reported
1588 after an attach, so this is the main thread. Update the
1589 ptid in the thread list. */
1590 if (in_thread_list (pid_to_ptid (pid
)))
1591 thread_change_ptid (inferior_ptid
, currthread
);
1594 remote_add_thread (currthread
, running
);
1595 inferior_ptid
= currthread
;
1600 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1602 /* inferior_ptid is not set yet. This can happen with the
1603 vRun -> remote_wait,"TAAthread:" path if the stub
1604 doesn't support qC. This is the first stop reported
1605 after an attach, so this is the main thread. Update the
1606 ptid in the thread list. */
1607 thread_change_ptid (inferior_ptid
, currthread
);
1611 /* When connecting to a target remote, or to a target
1612 extended-remote which already was debugging an inferior, we
1613 may not know about it yet. Add it before adding its child
1614 thread, so notifications are emitted in a sensible order. */
1615 if (!in_inferior_list (ptid_get_pid (currthread
)))
1617 struct remote_state
*rs
= get_remote_state ();
1618 int fake_pid_p
= !remote_multi_process_p (rs
);
1620 inf
= remote_add_inferior (fake_pid_p
,
1621 ptid_get_pid (currthread
), -1);
1624 /* This is really a new thread. Add it. */
1625 remote_add_thread (currthread
, running
);
1627 /* If we found a new inferior, let the common code do whatever
1628 it needs to with it (e.g., read shared libraries, insert
1631 notice_new_inferior (currthread
, running
, 0);
1635 /* Return the private thread data, creating it if necessary. */
1637 static struct private_thread_info
*
1638 demand_private_info (ptid_t ptid
)
1640 struct thread_info
*info
= find_thread_ptid (ptid
);
1646 info
->private = xmalloc (sizeof (*(info
->private)));
1647 info
->private_dtor
= free_private_thread_info
;
1648 info
->private->core
= -1;
1649 info
->private->extra
= 0;
1652 return info
->private;
1655 /* Call this function as a result of
1656 1) A halt indication (T packet) containing a thread id
1657 2) A direct query of currthread
1658 3) Successful execution of set thread */
1661 record_currthread (struct remote_state
*rs
, ptid_t currthread
)
1663 rs
->general_thread
= currthread
;
1666 /* If 'QPassSignals' is supported, tell the remote stub what signals
1667 it can simply pass through to the inferior without reporting. */
1670 remote_pass_signals (int numsigs
, unsigned char *pass_signals
)
1672 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1674 char *pass_packet
, *p
;
1676 struct remote_state
*rs
= get_remote_state ();
1678 gdb_assert (numsigs
< 256);
1679 for (i
= 0; i
< numsigs
; i
++)
1681 if (pass_signals
[i
])
1684 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1685 strcpy (pass_packet
, "QPassSignals:");
1686 p
= pass_packet
+ strlen (pass_packet
);
1687 for (i
= 0; i
< numsigs
; i
++)
1689 if (pass_signals
[i
])
1692 *p
++ = tohex (i
>> 4);
1693 *p
++ = tohex (i
& 15);
1702 if (!rs
->last_pass_packet
|| strcmp (rs
->last_pass_packet
, pass_packet
))
1704 char *buf
= rs
->buf
;
1706 putpkt (pass_packet
);
1707 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1708 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1709 if (rs
->last_pass_packet
)
1710 xfree (rs
->last_pass_packet
);
1711 rs
->last_pass_packet
= pass_packet
;
1714 xfree (pass_packet
);
1718 /* If 'QProgramSignals' is supported, tell the remote stub what
1719 signals it should pass through to the inferior when detaching. */
1722 remote_program_signals (int numsigs
, unsigned char *signals
)
1724 if (remote_protocol_packets
[PACKET_QProgramSignals
].support
!= PACKET_DISABLE
)
1728 struct remote_state
*rs
= get_remote_state ();
1730 gdb_assert (numsigs
< 256);
1731 for (i
= 0; i
< numsigs
; i
++)
1736 packet
= xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
1737 strcpy (packet
, "QProgramSignals:");
1738 p
= packet
+ strlen (packet
);
1739 for (i
= 0; i
< numsigs
; i
++)
1741 if (signal_pass_state (i
))
1744 *p
++ = tohex (i
>> 4);
1745 *p
++ = tohex (i
& 15);
1754 if (!rs
->last_program_signals_packet
1755 || strcmp (rs
->last_program_signals_packet
, packet
) != 0)
1757 char *buf
= rs
->buf
;
1760 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1761 packet_ok (buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
1762 xfree (rs
->last_program_signals_packet
);
1763 rs
->last_program_signals_packet
= packet
;
1770 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1771 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1772 thread. If GEN is set, set the general thread, if not, then set
1773 the step/continue thread. */
1775 set_thread (struct ptid ptid
, int gen
)
1777 struct remote_state
*rs
= get_remote_state ();
1778 ptid_t state
= gen
? rs
->general_thread
: rs
->continue_thread
;
1779 char *buf
= rs
->buf
;
1780 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1782 if (ptid_equal (state
, ptid
))
1786 *buf
++ = gen
? 'g' : 'c';
1787 if (ptid_equal (ptid
, magic_null_ptid
))
1788 xsnprintf (buf
, endbuf
- buf
, "0");
1789 else if (ptid_equal (ptid
, any_thread_ptid
))
1790 xsnprintf (buf
, endbuf
- buf
, "0");
1791 else if (ptid_equal (ptid
, minus_one_ptid
))
1792 xsnprintf (buf
, endbuf
- buf
, "-1");
1794 write_ptid (buf
, endbuf
, ptid
);
1796 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1798 rs
->general_thread
= ptid
;
1800 rs
->continue_thread
= ptid
;
1804 set_general_thread (struct ptid ptid
)
1806 set_thread (ptid
, 1);
1810 set_continue_thread (struct ptid ptid
)
1812 set_thread (ptid
, 0);
1815 /* Change the remote current process. Which thread within the process
1816 ends up selected isn't important, as long as it is the same process
1817 as what INFERIOR_PTID points to.
1819 This comes from that fact that there is no explicit notion of
1820 "selected process" in the protocol. The selected process for
1821 general operations is the process the selected general thread
1825 set_general_process (void)
1827 struct remote_state
*rs
= get_remote_state ();
1829 /* If the remote can't handle multiple processes, don't bother. */
1830 if (!rs
->extended
|| !remote_multi_process_p (rs
))
1833 /* We only need to change the remote current thread if it's pointing
1834 at some other process. */
1835 if (ptid_get_pid (rs
->general_thread
) != ptid_get_pid (inferior_ptid
))
1836 set_general_thread (inferior_ptid
);
1840 /* Return nonzero if the thread PTID is still alive on the remote
1844 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1846 struct remote_state
*rs
= get_remote_state ();
1849 if (ptid_equal (ptid
, magic_null_ptid
))
1850 /* The main thread is always alive. */
1853 if (ptid_get_pid (ptid
) != 0 && ptid_get_tid (ptid
) == 0)
1854 /* The main thread is always alive. This can happen after a
1855 vAttach, if the remote side doesn't support
1860 endp
= rs
->buf
+ get_remote_packet_size ();
1863 write_ptid (p
, endp
, ptid
);
1866 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1867 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1870 /* About these extended threadlist and threadinfo packets. They are
1871 variable length packets but, the fields within them are often fixed
1872 length. They are redundent enough to send over UDP as is the
1873 remote protocol in general. There is a matching unit test module
1876 #define OPAQUETHREADBYTES 8
1878 /* a 64 bit opaque identifier */
1879 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1881 /* WARNING: This threadref data structure comes from the remote O.S.,
1882 libstub protocol encoding, and remote.c. It is not particularly
1885 /* Right now, the internal structure is int. We want it to be bigger.
1886 Plan to fix this. */
1888 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1890 /* gdb_ext_thread_info is an internal GDB data structure which is
1891 equivalent to the reply of the remote threadinfo packet. */
1893 struct gdb_ext_thread_info
1895 threadref threadid
; /* External form of thread reference. */
1896 int active
; /* Has state interesting to GDB?
1898 char display
[256]; /* Brief state display, name,
1899 blocked/suspended. */
1900 char shortname
[32]; /* To be used to name threads. */
1901 char more_display
[256]; /* Long info, statistics, queue depth,
1905 /* The volume of remote transfers can be limited by submitting
1906 a mask containing bits specifying the desired information.
1907 Use a union of these values as the 'selection' parameter to
1908 get_thread_info. FIXME: Make these TAG names more thread specific. */
1910 #define TAG_THREADID 1
1911 #define TAG_EXISTS 2
1912 #define TAG_DISPLAY 4
1913 #define TAG_THREADNAME 8
1914 #define TAG_MOREDISPLAY 16
1916 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1918 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1920 static char *unpack_nibble (char *buf
, int *val
);
1922 static char *pack_nibble (char *buf
, int nibble
);
1924 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1926 static char *unpack_byte (char *buf
, int *value
);
1928 static char *pack_int (char *buf
, int value
);
1930 static char *unpack_int (char *buf
, int *value
);
1932 static char *unpack_string (char *src
, char *dest
, int length
);
1934 static char *pack_threadid (char *pkt
, threadref
*id
);
1936 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1938 void int_to_threadref (threadref
*id
, int value
);
1940 static int threadref_to_int (threadref
*ref
);
1942 static void copy_threadref (threadref
*dest
, threadref
*src
);
1944 static int threadmatch (threadref
*dest
, threadref
*src
);
1946 static char *pack_threadinfo_request (char *pkt
, int mode
,
1949 static int remote_unpack_thread_info_response (char *pkt
,
1950 threadref
*expectedref
,
1951 struct gdb_ext_thread_info
1955 static int remote_get_threadinfo (threadref
*threadid
,
1956 int fieldset
, /*TAG mask */
1957 struct gdb_ext_thread_info
*info
);
1959 static char *pack_threadlist_request (char *pkt
, int startflag
,
1961 threadref
*nextthread
);
1963 static int parse_threadlist_response (char *pkt
,
1965 threadref
*original_echo
,
1966 threadref
*resultlist
,
1969 static int remote_get_threadlist (int startflag
,
1970 threadref
*nextthread
,
1974 threadref
*threadlist
);
1976 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1978 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1979 void *context
, int looplimit
);
1981 static int remote_newthread_step (threadref
*ref
, void *context
);
1984 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1985 buffer we're allowed to write to. Returns
1986 BUF+CHARACTERS_WRITTEN. */
1989 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1992 struct remote_state
*rs
= get_remote_state ();
1994 if (remote_multi_process_p (rs
))
1996 pid
= ptid_get_pid (ptid
);
1998 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
2000 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
2002 tid
= ptid_get_tid (ptid
);
2004 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
2006 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
2011 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
2012 passed the last parsed char. Returns null_ptid on error. */
2015 read_ptid (char *buf
, char **obuf
)
2019 ULONGEST pid
= 0, tid
= 0;
2023 /* Multi-process ptid. */
2024 pp
= unpack_varlen_hex (p
+ 1, &pid
);
2026 error (_("invalid remote ptid: %s"), p
);
2029 pp
= unpack_varlen_hex (p
+ 1, &tid
);
2032 return ptid_build (pid
, 0, tid
);
2035 /* No multi-process. Just a tid. */
2036 pp
= unpack_varlen_hex (p
, &tid
);
2038 /* Since the stub is not sending a process id, then default to
2039 what's in inferior_ptid, unless it's null at this point. If so,
2040 then since there's no way to know the pid of the reported
2041 threads, use the magic number. */
2042 if (ptid_equal (inferior_ptid
, null_ptid
))
2043 pid
= ptid_get_pid (magic_null_ptid
);
2045 pid
= ptid_get_pid (inferior_ptid
);
2049 return ptid_build (pid
, 0, tid
);
2052 /* Encode 64 bits in 16 chars of hex. */
2054 static const char hexchars
[] = "0123456789abcdef";
2057 ishex (int ch
, int *val
)
2059 if ((ch
>= 'a') && (ch
<= 'f'))
2061 *val
= ch
- 'a' + 10;
2064 if ((ch
>= 'A') && (ch
<= 'F'))
2066 *val
= ch
- 'A' + 10;
2069 if ((ch
>= '0') && (ch
<= '9'))
2080 if (ch
>= 'a' && ch
<= 'f')
2081 return ch
- 'a' + 10;
2082 if (ch
>= '0' && ch
<= '9')
2084 if (ch
>= 'A' && ch
<= 'F')
2085 return ch
- 'A' + 10;
2090 stub_unpack_int (char *buff
, int fieldlength
)
2097 nibble
= stubhex (*buff
++);
2101 retval
= retval
<< 4;
2107 unpack_varlen_hex (char *buff
, /* packet to parse */
2111 ULONGEST retval
= 0;
2113 while (ishex (*buff
, &nibble
))
2116 retval
= retval
<< 4;
2117 retval
|= nibble
& 0x0f;
2124 unpack_nibble (char *buf
, int *val
)
2126 *val
= fromhex (*buf
++);
2131 pack_nibble (char *buf
, int nibble
)
2133 *buf
++ = hexchars
[(nibble
& 0x0f)];
2138 pack_hex_byte (char *pkt
, int byte
)
2140 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
2141 *pkt
++ = hexchars
[(byte
& 0xf)];
2146 unpack_byte (char *buf
, int *value
)
2148 *value
= stub_unpack_int (buf
, 2);
2153 pack_int (char *buf
, int value
)
2155 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2156 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2157 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2158 buf
= pack_hex_byte (buf
, (value
& 0xff));
2163 unpack_int (char *buf
, int *value
)
2165 *value
= stub_unpack_int (buf
, 8);
2169 #if 0 /* Currently unused, uncomment when needed. */
2170 static char *pack_string (char *pkt
, char *string
);
2173 pack_string (char *pkt
, char *string
)
2178 len
= strlen (string
);
2180 len
= 200; /* Bigger than most GDB packets, junk??? */
2181 pkt
= pack_hex_byte (pkt
, len
);
2185 if ((ch
== '\0') || (ch
== '#'))
2186 ch
= '*'; /* Protect encapsulation. */
2191 #endif /* 0 (unused) */
2194 unpack_string (char *src
, char *dest
, int length
)
2203 pack_threadid (char *pkt
, threadref
*id
)
2206 unsigned char *altid
;
2208 altid
= (unsigned char *) id
;
2209 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2211 pkt
= pack_hex_byte (pkt
, *altid
++);
2217 unpack_threadid (char *inbuf
, threadref
*id
)
2220 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2223 altref
= (char *) id
;
2225 while (inbuf
< limit
)
2227 x
= stubhex (*inbuf
++);
2228 y
= stubhex (*inbuf
++);
2229 *altref
++ = (x
<< 4) | y
;
2234 /* Externally, threadrefs are 64 bits but internally, they are still
2235 ints. This is due to a mismatch of specifications. We would like
2236 to use 64bit thread references internally. This is an adapter
2240 int_to_threadref (threadref
*id
, int value
)
2242 unsigned char *scan
;
2244 scan
= (unsigned char *) id
;
2250 *scan
++ = (value
>> 24) & 0xff;
2251 *scan
++ = (value
>> 16) & 0xff;
2252 *scan
++ = (value
>> 8) & 0xff;
2253 *scan
++ = (value
& 0xff);
2257 threadref_to_int (threadref
*ref
)
2260 unsigned char *scan
;
2266 value
= (value
<< 8) | ((*scan
++) & 0xff);
2271 copy_threadref (threadref
*dest
, threadref
*src
)
2274 unsigned char *csrc
, *cdest
;
2276 csrc
= (unsigned char *) src
;
2277 cdest
= (unsigned char *) dest
;
2284 threadmatch (threadref
*dest
, threadref
*src
)
2286 /* Things are broken right now, so just assume we got a match. */
2288 unsigned char *srcp
, *destp
;
2290 srcp
= (char *) src
;
2291 destp
= (char *) dest
;
2295 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2302 threadid:1, # always request threadid
2309 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2312 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2314 *pkt
++ = 'q'; /* Info Query */
2315 *pkt
++ = 'P'; /* process or thread info */
2316 pkt
= pack_int (pkt
, mode
); /* mode */
2317 pkt
= pack_threadid (pkt
, id
); /* threadid */
2318 *pkt
= '\0'; /* terminate */
2322 /* These values tag the fields in a thread info response packet. */
2323 /* Tagging the fields allows us to request specific fields and to
2324 add more fields as time goes by. */
2326 #define TAG_THREADID 1 /* Echo the thread identifier. */
2327 #define TAG_EXISTS 2 /* Is this process defined enough to
2328 fetch registers and its stack? */
2329 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2330 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2331 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2335 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2336 struct gdb_ext_thread_info
*info
)
2338 struct remote_state
*rs
= get_remote_state ();
2342 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2345 /* info->threadid = 0; FIXME: implement zero_threadref. */
2347 info
->display
[0] = '\0';
2348 info
->shortname
[0] = '\0';
2349 info
->more_display
[0] = '\0';
2351 /* Assume the characters indicating the packet type have been
2353 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2354 pkt
= unpack_threadid (pkt
, &ref
);
2357 warning (_("Incomplete response to threadinfo request."));
2358 if (!threadmatch (&ref
, expectedref
))
2359 { /* This is an answer to a different request. */
2360 warning (_("ERROR RMT Thread info mismatch."));
2363 copy_threadref (&info
->threadid
, &ref
);
2365 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2367 /* Packets are terminated with nulls. */
2368 while ((pkt
< limit
) && mask
&& *pkt
)
2370 pkt
= unpack_int (pkt
, &tag
); /* tag */
2371 pkt
= unpack_byte (pkt
, &length
); /* length */
2372 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2374 warning (_("ERROR RMT: threadinfo tag mismatch."));
2378 if (tag
== TAG_THREADID
)
2382 warning (_("ERROR RMT: length of threadid is not 16."));
2386 pkt
= unpack_threadid (pkt
, &ref
);
2387 mask
= mask
& ~TAG_THREADID
;
2390 if (tag
== TAG_EXISTS
)
2392 info
->active
= stub_unpack_int (pkt
, length
);
2394 mask
= mask
& ~(TAG_EXISTS
);
2397 warning (_("ERROR RMT: 'exists' length too long."));
2403 if (tag
== TAG_THREADNAME
)
2405 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2406 mask
= mask
& ~TAG_THREADNAME
;
2409 if (tag
== TAG_DISPLAY
)
2411 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2412 mask
= mask
& ~TAG_DISPLAY
;
2415 if (tag
== TAG_MOREDISPLAY
)
2417 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2418 mask
= mask
& ~TAG_MOREDISPLAY
;
2421 warning (_("ERROR RMT: unknown thread info tag."));
2422 break; /* Not a tag we know about. */
2428 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2429 struct gdb_ext_thread_info
*info
)
2431 struct remote_state
*rs
= get_remote_state ();
2434 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2436 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2438 if (rs
->buf
[0] == '\0')
2441 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2446 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2449 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2450 threadref
*nextthread
)
2452 *pkt
++ = 'q'; /* info query packet */
2453 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2454 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2455 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2456 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2461 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2464 parse_threadlist_response (char *pkt
, int result_limit
,
2465 threadref
*original_echo
, threadref
*resultlist
,
2468 struct remote_state
*rs
= get_remote_state ();
2470 int count
, resultcount
, done
;
2473 /* Assume the 'q' and 'M chars have been stripped. */
2474 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2475 /* done parse past here */
2476 pkt
= unpack_byte (pkt
, &count
); /* count field */
2477 pkt
= unpack_nibble (pkt
, &done
);
2478 /* The first threadid is the argument threadid. */
2479 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2480 while ((count
-- > 0) && (pkt
< limit
))
2482 pkt
= unpack_threadid (pkt
, resultlist
++);
2483 if (resultcount
++ >= result_limit
)
2492 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2493 int *done
, int *result_count
, threadref
*threadlist
)
2495 struct remote_state
*rs
= get_remote_state ();
2496 static threadref echo_nextthread
;
2499 /* Trancate result limit to be smaller than the packet size. */
2500 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2501 >= get_remote_packet_size ())
2502 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2504 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2506 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2508 if (*rs
->buf
== '\0')
2512 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
2515 if (!threadmatch (&echo_nextthread
, nextthread
))
2517 /* FIXME: This is a good reason to drop the packet. */
2518 /* Possably, there is a duplicate response. */
2520 retransmit immediatly - race conditions
2521 retransmit after timeout - yes
2523 wait for packet, then exit
2525 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2526 return 0; /* I choose simply exiting. */
2528 if (*result_count
<= 0)
2532 warning (_("RMT ERROR : failed to get remote thread list."));
2535 return result
; /* break; */
2537 if (*result_count
> result_limit
)
2540 warning (_("RMT ERROR: threadlist response longer than requested."));
2546 /* This is the interface between remote and threads, remotes upper
2549 /* remote_find_new_threads retrieves the thread list and for each
2550 thread in the list, looks up the thread in GDB's internal list,
2551 adding the thread if it does not already exist. This involves
2552 getting partial thread lists from the remote target so, polling the
2553 quit_flag is required. */
2556 /* About this many threadisds fit in a packet. */
2558 #define MAXTHREADLISTRESULTS 32
2561 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2564 int done
, i
, result_count
;
2568 static threadref nextthread
;
2569 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
2574 if (loopcount
++ > looplimit
)
2577 warning (_("Remote fetch threadlist -infinite loop-."));
2580 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
2581 &done
, &result_count
, resultthreadlist
))
2586 /* Clear for later iterations. */
2588 /* Setup to resume next batch of thread references, set nextthread. */
2589 if (result_count
>= 1)
2590 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
2592 while (result_count
--)
2593 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
2600 remote_newthread_step (threadref
*ref
, void *context
)
2602 int pid
= ptid_get_pid (inferior_ptid
);
2603 ptid_t ptid
= ptid_build (pid
, 0, threadref_to_int (ref
));
2605 if (!in_thread_list (ptid
))
2607 return 1; /* continue iterator */
2610 #define CRAZY_MAX_THREADS 1000
2613 remote_current_thread (ptid_t oldpid
)
2615 struct remote_state
*rs
= get_remote_state ();
2618 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2619 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2620 return read_ptid (&rs
->buf
[2], NULL
);
2625 /* Find new threads for info threads command.
2626 * Original version, using John Metzler's thread protocol.
2630 remote_find_new_threads (void)
2632 remote_threadlist_iterator (remote_newthread_step
, 0,
2636 #if defined(HAVE_LIBEXPAT)
2638 typedef struct thread_item
2644 DEF_VEC_O(thread_item_t
);
2646 struct threads_parsing_context
2648 VEC (thread_item_t
) *items
;
2652 start_thread (struct gdb_xml_parser
*parser
,
2653 const struct gdb_xml_element
*element
,
2654 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2656 struct threads_parsing_context
*data
= user_data
;
2658 struct thread_item item
;
2660 struct gdb_xml_value
*attr
;
2662 id
= xml_find_attribute (attributes
, "id")->value
;
2663 item
.ptid
= read_ptid (id
, NULL
);
2665 attr
= xml_find_attribute (attributes
, "core");
2667 item
.core
= *(ULONGEST
*) attr
->value
;
2673 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2677 end_thread (struct gdb_xml_parser
*parser
,
2678 const struct gdb_xml_element
*element
,
2679 void *user_data
, const char *body_text
)
2681 struct threads_parsing_context
*data
= user_data
;
2683 if (body_text
&& *body_text
)
2684 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2687 const struct gdb_xml_attribute thread_attributes
[] = {
2688 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2689 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2690 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2693 const struct gdb_xml_element thread_children
[] = {
2694 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2697 const struct gdb_xml_element threads_children
[] = {
2698 { "thread", thread_attributes
, thread_children
,
2699 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2700 start_thread
, end_thread
},
2701 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2704 const struct gdb_xml_element threads_elements
[] = {
2705 { "threads", NULL
, threads_children
,
2706 GDB_XML_EF_NONE
, NULL
, NULL
},
2707 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2710 /* Discard the contents of the constructed thread info context. */
2713 clear_threads_parsing_context (void *p
)
2715 struct threads_parsing_context
*context
= p
;
2717 struct thread_item
*item
;
2719 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2720 xfree (item
->extra
);
2722 VEC_free (thread_item_t
, context
->items
);
2728 * Find all threads for info threads command.
2729 * Uses new thread protocol contributed by Cisco.
2730 * Falls back and attempts to use the older method (above)
2731 * if the target doesn't respond to the new method.
2735 remote_threads_info (struct target_ops
*ops
)
2737 struct remote_state
*rs
= get_remote_state ();
2741 if (rs
->remote_desc
== 0) /* paranoia */
2742 error (_("Command can only be used when connected to the remote target."));
2744 #if defined(HAVE_LIBEXPAT)
2745 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2747 char *xml
= target_read_stralloc (¤t_target
,
2748 TARGET_OBJECT_THREADS
, NULL
);
2750 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2754 struct threads_parsing_context context
;
2756 context
.items
= NULL
;
2757 make_cleanup (clear_threads_parsing_context
, &context
);
2759 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2760 threads_elements
, xml
, &context
) == 0)
2763 struct thread_item
*item
;
2766 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2769 if (!ptid_equal (item
->ptid
, null_ptid
))
2771 struct private_thread_info
*info
;
2772 /* In non-stop mode, we assume new found threads
2773 are running until proven otherwise with a
2774 stop reply. In all-stop, we can only get
2775 here if all threads are stopped. */
2776 int running
= non_stop
? 1 : 0;
2778 remote_notice_new_inferior (item
->ptid
, running
);
2780 info
= demand_private_info (item
->ptid
);
2781 info
->core
= item
->core
;
2782 info
->extra
= item
->extra
;
2789 do_cleanups (back_to
);
2794 if (rs
->use_threadinfo_query
)
2796 putpkt ("qfThreadInfo");
2797 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2799 if (bufp
[0] != '\0') /* q packet recognized */
2801 struct cleanup
*old_chain
;
2804 /* remote_notice_new_inferior (in the loop below) may make
2805 new RSP calls, which clobber rs->buf. Work with a
2807 bufp
= saved_reply
= xstrdup (rs
->buf
);
2808 old_chain
= make_cleanup (free_current_contents
, &saved_reply
);
2810 while (*bufp
++ == 'm') /* reply contains one or more TID */
2814 new_thread
= read_ptid (bufp
, &bufp
);
2815 if (!ptid_equal (new_thread
, null_ptid
))
2817 /* In non-stop mode, we assume new found threads
2818 are running until proven otherwise with a
2819 stop reply. In all-stop, we can only get
2820 here if all threads are stopped. */
2821 int running
= non_stop
? 1 : 0;
2823 remote_notice_new_inferior (new_thread
, running
);
2826 while (*bufp
++ == ','); /* comma-separated list */
2827 free_current_contents (&saved_reply
);
2828 putpkt ("qsThreadInfo");
2829 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2830 bufp
= saved_reply
= xstrdup (rs
->buf
);
2832 do_cleanups (old_chain
);
2837 /* Only qfThreadInfo is supported in non-stop mode. */
2841 /* Else fall back to old method based on jmetzler protocol. */
2842 rs
->use_threadinfo_query
= 0;
2843 remote_find_new_threads ();
2848 * Collect a descriptive string about the given thread.
2849 * The target may say anything it wants to about the thread
2850 * (typically info about its blocked / runnable state, name, etc.).
2851 * This string will appear in the info threads display.
2853 * Optional: targets are not required to implement this function.
2857 remote_threads_extra_info (struct thread_info
*tp
)
2859 struct remote_state
*rs
= get_remote_state ();
2863 struct gdb_ext_thread_info threadinfo
;
2864 static char display_buf
[100]; /* arbitrary... */
2865 int n
= 0; /* position in display_buf */
2867 if (rs
->remote_desc
== 0) /* paranoia */
2868 internal_error (__FILE__
, __LINE__
,
2869 _("remote_threads_extra_info"));
2871 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2872 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2873 /* This is the main thread which was added by GDB. The remote
2874 server doesn't know about it. */
2877 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2879 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2881 if (info
&& info
->private)
2882 return info
->private->extra
;
2887 if (rs
->use_threadextra_query
)
2890 char *endb
= rs
->buf
+ get_remote_packet_size ();
2892 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2894 write_ptid (b
, endb
, tp
->ptid
);
2897 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2898 if (rs
->buf
[0] != 0)
2900 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2901 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2902 display_buf
[result
] = '\0';
2907 /* If the above query fails, fall back to the old method. */
2908 rs
->use_threadextra_query
= 0;
2909 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2910 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2911 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2912 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2913 if (threadinfo
.active
)
2915 if (*threadinfo
.shortname
)
2916 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2917 " Name: %s,", threadinfo
.shortname
);
2918 if (*threadinfo
.display
)
2919 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2920 " State: %s,", threadinfo
.display
);
2921 if (*threadinfo
.more_display
)
2922 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2923 " Priority: %s", threadinfo
.more_display
);
2927 /* For purely cosmetic reasons, clear up trailing commas. */
2928 if (',' == display_buf
[n
-1])
2929 display_buf
[n
-1] = ' ';
2938 remote_static_tracepoint_marker_at (CORE_ADDR addr
,
2939 struct static_tracepoint_marker
*marker
)
2941 struct remote_state
*rs
= get_remote_state ();
2944 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
2946 p
+= hexnumstr (p
, addr
);
2948 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2952 error (_("Remote failure reply: %s"), p
);
2956 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2963 static VEC(static_tracepoint_marker_p
) *
2964 remote_static_tracepoint_markers_by_strid (const char *strid
)
2966 struct remote_state
*rs
= get_remote_state ();
2967 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2968 struct static_tracepoint_marker
*marker
= NULL
;
2969 struct cleanup
*old_chain
;
2972 /* Ask for a first packet of static tracepoint marker
2975 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2978 error (_("Remote failure reply: %s"), p
);
2980 old_chain
= make_cleanup (free_current_marker
, &marker
);
2985 marker
= XCNEW (struct static_tracepoint_marker
);
2989 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2991 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2993 VEC_safe_push (static_tracepoint_marker_p
,
2999 release_static_tracepoint_marker (marker
);
3000 memset (marker
, 0, sizeof (*marker
));
3003 while (*p
++ == ','); /* comma-separated list */
3004 /* Ask for another packet of static tracepoint definition. */
3006 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3010 do_cleanups (old_chain
);
3015 /* Implement the to_get_ada_task_ptid function for the remote targets. */
3018 remote_get_ada_task_ptid (long lwp
, long thread
)
3020 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
3024 /* Restart the remote side; this is an extended protocol operation. */
3027 extended_remote_restart (void)
3029 struct remote_state
*rs
= get_remote_state ();
3031 /* Send the restart command; for reasons I don't understand the
3032 remote side really expects a number after the "R". */
3033 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
3036 remote_fileio_reset ();
3039 /* Clean up connection to a remote debugger. */
3044 struct remote_state
*rs
= get_remote_state ();
3046 if (rs
->remote_desc
== NULL
)
3047 return; /* already closed */
3049 /* Make sure we leave stdin registered in the event loop, and we
3050 don't leave the async SIGINT signal handler installed. */
3051 remote_terminal_ours ();
3053 serial_close (rs
->remote_desc
);
3054 rs
->remote_desc
= NULL
;
3056 /* We don't have a connection to the remote stub anymore. Get rid
3057 of all the inferiors and their threads we were controlling.
3058 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3059 will be unable to find the thread corresponding to (pid, 0, 0). */
3060 inferior_ptid
= null_ptid
;
3061 discard_all_inferiors ();
3063 /* Stop replies may from inferiors which are still unknown to GDB.
3064 We are closing the remote target, so we should discard
3065 everything, including the stop replies from GDB-unknown
3067 discard_pending_stop_replies (NULL
);
3069 if (remote_async_inferior_event_token
)
3070 delete_async_event_handler (&remote_async_inferior_event_token
);
3072 remote_notif_unregister_async_event_handler ();
3074 trace_reset_local_state ();
3077 /* Query the remote side for the text, data and bss offsets. */
3082 struct remote_state
*rs
= get_remote_state ();
3085 int lose
, num_segments
= 0, do_sections
, do_segments
;
3086 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3087 struct section_offsets
*offs
;
3088 struct symfile_segment_data
*data
;
3090 if (symfile_objfile
== NULL
)
3093 putpkt ("qOffsets");
3094 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3097 if (buf
[0] == '\000')
3098 return; /* Return silently. Stub doesn't support
3102 warning (_("Remote failure reply: %s"), buf
);
3106 /* Pick up each field in turn. This used to be done with scanf, but
3107 scanf will make trouble if CORE_ADDR size doesn't match
3108 conversion directives correctly. The following code will work
3109 with any size of CORE_ADDR. */
3110 text_addr
= data_addr
= bss_addr
= 0;
3114 if (strncmp (ptr
, "Text=", 5) == 0)
3117 /* Don't use strtol, could lose on big values. */
3118 while (*ptr
&& *ptr
!= ';')
3119 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3121 if (strncmp (ptr
, ";Data=", 6) == 0)
3124 while (*ptr
&& *ptr
!= ';')
3125 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3130 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3133 while (*ptr
&& *ptr
!= ';')
3134 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3136 if (bss_addr
!= data_addr
)
3137 warning (_("Target reported unsupported offsets: %s"), buf
);
3142 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3145 /* Don't use strtol, could lose on big values. */
3146 while (*ptr
&& *ptr
!= ';')
3147 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3150 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3153 while (*ptr
&& *ptr
!= ';')
3154 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3162 error (_("Malformed response to offset query, %s"), buf
);
3163 else if (*ptr
!= '\0')
3164 warning (_("Target reported unsupported offsets: %s"), buf
);
3166 offs
= ((struct section_offsets
*)
3167 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3168 memcpy (offs
, symfile_objfile
->section_offsets
,
3169 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3171 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3172 do_segments
= (data
!= NULL
);
3173 do_sections
= num_segments
== 0;
3175 if (num_segments
> 0)
3177 segments
[0] = text_addr
;
3178 segments
[1] = data_addr
;
3180 /* If we have two segments, we can still try to relocate everything
3181 by assuming that the .text and .data offsets apply to the whole
3182 text and data segments. Convert the offsets given in the packet
3183 to base addresses for symfile_map_offsets_to_segments. */
3184 else if (data
&& data
->num_segments
== 2)
3186 segments
[0] = data
->segment_bases
[0] + text_addr
;
3187 segments
[1] = data
->segment_bases
[1] + data_addr
;
3190 /* If the object file has only one segment, assume that it is text
3191 rather than data; main programs with no writable data are rare,
3192 but programs with no code are useless. Of course the code might
3193 have ended up in the data segment... to detect that we would need
3194 the permissions here. */
3195 else if (data
&& data
->num_segments
== 1)
3197 segments
[0] = data
->segment_bases
[0] + text_addr
;
3200 /* There's no way to relocate by segment. */
3206 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3207 offs
, num_segments
, segments
);
3209 if (ret
== 0 && !do_sections
)
3210 error (_("Can not handle qOffsets TextSeg "
3211 "response with this symbol file"));
3218 free_symfile_segment_data (data
);
3222 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3224 /* This is a temporary kludge to force data and bss to use the
3225 same offsets because that's what nlmconv does now. The real
3226 solution requires changes to the stub and remote.c that I
3227 don't have time to do right now. */
3229 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3230 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3233 objfile_relocate (symfile_objfile
, offs
);
3236 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3237 threads we know are stopped already. This is used during the
3238 initial remote connection in non-stop mode --- threads that are
3239 reported as already being stopped are left stopped. */
3242 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3244 /* If we have a stop reply for this thread, it must be stopped. */
3245 if (peek_stop_reply (thread
->ptid
))
3246 set_stop_requested (thread
->ptid
, 1);
3251 /* Send interrupt_sequence to remote target. */
3253 send_interrupt_sequence (void)
3255 struct remote_state
*rs
= get_remote_state ();
3257 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3258 remote_serial_write ("\x03", 1);
3259 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3260 serial_send_break (rs
->remote_desc
);
3261 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3263 serial_send_break (rs
->remote_desc
);
3264 remote_serial_write ("g", 1);
3267 internal_error (__FILE__
, __LINE__
,
3268 _("Invalid value for interrupt_sequence_mode: %s."),
3269 interrupt_sequence_mode
);
3273 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3274 and extract the PTID. Returns NULL_PTID if not found. */
3277 stop_reply_extract_thread (char *stop_reply
)
3279 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3283 /* Txx r:val ; r:val (...) */
3286 /* Look for "register" named "thread". */
3291 p1
= strchr (p
, ':');
3295 if (strncmp (p
, "thread", p1
- p
) == 0)
3296 return read_ptid (++p1
, &p
);
3298 p1
= strchr (p
, ';');
3310 /* Query the remote target for which is the current thread/process,
3311 add it to our tables, and update INFERIOR_PTID. The caller is
3312 responsible for setting the state such that the remote end is ready
3313 to return the current thread.
3315 This function is called after handling the '?' or 'vRun' packets,
3316 whose response is a stop reply from which we can also try
3317 extracting the thread. If the target doesn't support the explicit
3318 qC query, we infer the current thread from that stop reply, passed
3319 in in WAIT_STATUS, which may be NULL. */
3322 add_current_inferior_and_thread (char *wait_status
)
3324 struct remote_state
*rs
= get_remote_state ();
3326 ptid_t ptid
= null_ptid
;
3328 inferior_ptid
= null_ptid
;
3330 /* Now, if we have thread information, update inferior_ptid. First
3331 if we have a stop reply handy, maybe it's a T stop reply with a
3332 "thread" register we can extract the current thread from. If
3333 not, ask the remote which is the current thread, with qC. The
3334 former method avoids a roundtrip. Note we don't use
3335 remote_parse_stop_reply as that makes use of the target
3336 architecture, which we haven't yet fully determined at this
3338 if (wait_status
!= NULL
)
3339 ptid
= stop_reply_extract_thread (wait_status
);
3340 if (ptid_equal (ptid
, null_ptid
))
3341 ptid
= remote_current_thread (inferior_ptid
);
3343 if (!ptid_equal (ptid
, null_ptid
))
3345 if (!remote_multi_process_p (rs
))
3348 inferior_ptid
= ptid
;
3352 /* Without this, some commands which require an active target
3353 (such as kill) won't work. This variable serves (at least)
3354 double duty as both the pid of the target process (if it has
3355 such), and as a flag indicating that a target is active. */
3356 inferior_ptid
= magic_null_ptid
;
3360 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3362 /* Add the main thread. */
3363 add_thread_silent (inferior_ptid
);
3367 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3369 struct remote_state
*rs
= get_remote_state ();
3370 struct packet_config
*noack_config
;
3371 char *wait_status
= NULL
;
3373 immediate_quit
++; /* Allow user to interrupt it. */
3376 if (interrupt_on_connect
)
3377 send_interrupt_sequence ();
3379 /* Ack any packet which the remote side has already sent. */
3380 serial_write (rs
->remote_desc
, "+", 1);
3382 /* Signal other parts that we're going through the initial setup,
3383 and so things may not be stable yet. */
3384 rs
->starting_up
= 1;
3386 /* The first packet we send to the target is the optional "supported
3387 packets" request. If the target can answer this, it will tell us
3388 which later probes to skip. */
3389 remote_query_supported ();
3391 /* If the stub wants to get a QAllow, compose one and send it. */
3392 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3393 remote_set_permissions ();
3395 /* Next, we possibly activate noack mode.
3397 If the QStartNoAckMode packet configuration is set to AUTO,
3398 enable noack mode if the stub reported a wish for it with
3401 If set to TRUE, then enable noack mode even if the stub didn't
3402 report it in qSupported. If the stub doesn't reply OK, the
3403 session ends with an error.
3405 If FALSE, then don't activate noack mode, regardless of what the
3406 stub claimed should be the default with qSupported. */
3408 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3410 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3411 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3412 && noack_config
->support
== PACKET_ENABLE
))
3414 putpkt ("QStartNoAckMode");
3415 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3416 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3422 /* Tell the remote that we are using the extended protocol. */
3424 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3427 /* Let the target know which signals it is allowed to pass down to
3429 update_signals_program_target ();
3431 /* Next, if the target can specify a description, read it. We do
3432 this before anything involving memory or registers. */
3433 target_find_description ();
3435 /* Next, now that we know something about the target, update the
3436 address spaces in the program spaces. */
3437 update_address_spaces ();
3439 /* On OSs where the list of libraries is global to all
3440 processes, we fetch them early. */
3441 if (gdbarch_has_global_solist (target_gdbarch ()))
3442 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3446 if (!rs
->non_stop_aware
)
3447 error (_("Non-stop mode requested, but remote "
3448 "does not support non-stop"));
3450 putpkt ("QNonStop:1");
3451 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3453 if (strcmp (rs
->buf
, "OK") != 0)
3454 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3456 /* Find about threads and processes the stub is already
3457 controlling. We default to adding them in the running state.
3458 The '?' query below will then tell us about which threads are
3460 remote_threads_info (target
);
3462 else if (rs
->non_stop_aware
)
3464 /* Don't assume that the stub can operate in all-stop mode.
3465 Request it explicitly. */
3466 putpkt ("QNonStop:0");
3467 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3469 if (strcmp (rs
->buf
, "OK") != 0)
3470 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3473 /* Upload TSVs regardless of whether the target is running or not. The
3474 remote stub, such as GDBserver, may have some predefined or builtin
3475 TSVs, even if the target is not running. */
3476 if (remote_get_trace_status (current_trace_status ()) != -1)
3478 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3480 remote_upload_trace_state_variables (&uploaded_tsvs
);
3481 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3484 /* Check whether the target is running now. */
3486 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3492 struct inferior
*inf
;
3494 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3497 error (_("The target is not running (try extended-remote?)"));
3499 /* We're connected, but not running. Drop out before we
3500 call start_remote. */
3501 rs
->starting_up
= 0;
3506 /* Save the reply for later. */
3507 wait_status
= alloca (strlen (rs
->buf
) + 1);
3508 strcpy (wait_status
, rs
->buf
);
3511 /* Let the stub know that we want it to return the thread. */
3512 set_continue_thread (minus_one_ptid
);
3514 add_current_inferior_and_thread (wait_status
);
3516 /* init_wait_for_inferior should be called before get_offsets in order
3517 to manage `inserted' flag in bp loc in a correct state.
3518 breakpoint_init_inferior, called from init_wait_for_inferior, set
3519 `inserted' flag to 0, while before breakpoint_re_set, called from
3520 start_remote, set `inserted' flag to 1. In the initialization of
3521 inferior, breakpoint_init_inferior should be called first, and then
3522 breakpoint_re_set can be called. If this order is broken, state of
3523 `inserted' flag is wrong, and cause some problems on breakpoint
3525 init_wait_for_inferior ();
3527 get_offsets (); /* Get text, data & bss offsets. */
3529 /* If we could not find a description using qXfer, and we know
3530 how to do it some other way, try again. This is not
3531 supported for non-stop; it could be, but it is tricky if
3532 there are no stopped threads when we connect. */
3533 if (remote_read_description_p (target
)
3534 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
3536 target_clear_description ();
3537 target_find_description ();
3540 /* Use the previously fetched status. */
3541 gdb_assert (wait_status
!= NULL
);
3542 strcpy (rs
->buf
, wait_status
);
3543 rs
->cached_wait_status
= 1;
3546 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3550 /* Clear WFI global state. Do this before finding about new
3551 threads and inferiors, and setting the current inferior.
3552 Otherwise we would clear the proceed status of the current
3553 inferior when we want its stop_soon state to be preserved
3554 (see notice_new_inferior). */
3555 init_wait_for_inferior ();
3557 /* In non-stop, we will either get an "OK", meaning that there
3558 are no stopped threads at this time; or, a regular stop
3559 reply. In the latter case, there may be more than one thread
3560 stopped --- we pull them all out using the vStopped
3562 if (strcmp (rs
->buf
, "OK") != 0)
3564 struct notif_client
*notif
= ¬if_client_stop
;
3566 /* remote_notif_get_pending_replies acks this one, and gets
3568 notif_client_stop
.pending_event
3569 = remote_notif_parse (notif
, rs
->buf
);
3570 remote_notif_get_pending_events (notif
);
3572 /* Make sure that threads that were stopped remain
3574 iterate_over_threads (set_stop_requested_callback
, NULL
);
3577 if (target_can_async_p ())
3578 target_async (inferior_event_handler
, 0);
3580 if (thread_count () == 0)
3583 error (_("The target is not running (try extended-remote?)"));
3585 /* We're connected, but not running. Drop out before we
3586 call start_remote. */
3587 rs
->starting_up
= 0;
3591 /* Let the stub know that we want it to return the thread. */
3593 /* Force the stub to choose a thread. */
3594 set_general_thread (null_ptid
);
3597 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3598 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3599 error (_("remote didn't report the current thread in non-stop mode"));
3601 get_offsets (); /* Get text, data & bss offsets. */
3603 /* In non-stop mode, any cached wait status will be stored in
3604 the stop reply queue. */
3605 gdb_assert (wait_status
== NULL
);
3607 /* Report all signals during attach/startup. */
3608 remote_pass_signals (0, NULL
);
3611 /* If we connected to a live target, do some additional setup. */
3612 if (target_has_execution
)
3614 if (exec_bfd
) /* No use without an exec file. */
3615 remote_check_symbols ();
3618 /* Possibly the target has been engaged in a trace run started
3619 previously; find out where things are at. */
3620 if (remote_get_trace_status (current_trace_status ()) != -1)
3622 struct uploaded_tp
*uploaded_tps
= NULL
;
3624 if (current_trace_status ()->running
)
3625 printf_filtered (_("Trace is already running on the target.\n"));
3627 remote_upload_tracepoints (&uploaded_tps
);
3629 merge_uploaded_tracepoints (&uploaded_tps
);
3632 /* The thread and inferior lists are now synchronized with the
3633 target, our symbols have been relocated, and we're merged the
3634 target's tracepoints with ours. We're done with basic start
3636 rs
->starting_up
= 0;
3638 /* If breakpoints are global, insert them now. */
3639 if (gdbarch_has_global_breakpoints (target_gdbarch ())
3640 && breakpoints_always_inserted_mode ())
3641 insert_breakpoints ();
3644 /* Open a connection to a remote debugger.
3645 NAME is the filename used for communication. */
3648 remote_open (char *name
, int from_tty
)
3650 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3653 /* Open a connection to a remote debugger using the extended
3654 remote gdb protocol. NAME is the filename used for communication. */
3657 extended_remote_open (char *name
, int from_tty
)
3659 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3662 /* Generic code for opening a connection to a remote target. */
3665 init_all_packet_configs (void)
3669 for (i
= 0; i
< PACKET_MAX
; i
++)
3670 update_packet_config (&remote_protocol_packets
[i
]);
3673 /* Symbol look-up. */
3676 remote_check_symbols (void)
3678 struct remote_state
*rs
= get_remote_state ();
3679 char *msg
, *reply
, *tmp
;
3680 struct minimal_symbol
*sym
;
3683 /* The remote side has no concept of inferiors that aren't running
3684 yet, it only knows about running processes. If we're connected
3685 but our current inferior is not running, we should not invite the
3686 remote target to request symbol lookups related to its
3687 (unrelated) current process. */
3688 if (!target_has_execution
)
3691 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3694 /* Make sure the remote is pointing at the right process. Note
3695 there's no way to select "no process". */
3696 set_general_process ();
3698 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3699 because we need both at the same time. */
3700 msg
= alloca (get_remote_packet_size ());
3702 /* Invite target to request symbol lookups. */
3704 putpkt ("qSymbol::");
3705 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3706 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3709 while (strncmp (reply
, "qSymbol:", 8) == 0)
3712 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3714 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3716 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3719 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
3720 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3722 /* If this is a function address, return the start of code
3723 instead of any data function descriptor. */
3724 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3728 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3729 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3733 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3738 static struct serial
*
3739 remote_serial_open (char *name
)
3741 static int udp_warning
= 0;
3743 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3744 of in ser-tcp.c, because it is the remote protocol assuming that the
3745 serial connection is reliable and not the serial connection promising
3747 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3749 warning (_("The remote protocol may be unreliable over UDP.\n"
3750 "Some events may be lost, rendering further debugging "
3755 return serial_open (name
);
3758 /* Inform the target of our permission settings. The permission flags
3759 work without this, but if the target knows the settings, it can do
3760 a couple things. First, it can add its own check, to catch cases
3761 that somehow manage to get by the permissions checks in target
3762 methods. Second, if the target is wired to disallow particular
3763 settings (for instance, a system in the field that is not set up to
3764 be able to stop at a breakpoint), it can object to any unavailable
3768 remote_set_permissions (void)
3770 struct remote_state
*rs
= get_remote_state ();
3772 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3773 "WriteReg:%x;WriteMem:%x;"
3774 "InsertBreak:%x;InsertTrace:%x;"
3775 "InsertFastTrace:%x;Stop:%x",
3776 may_write_registers
, may_write_memory
,
3777 may_insert_breakpoints
, may_insert_tracepoints
,
3778 may_insert_fast_tracepoints
, may_stop
);
3780 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3782 /* If the target didn't like the packet, warn the user. Do not try
3783 to undo the user's settings, that would just be maddening. */
3784 if (strcmp (rs
->buf
, "OK") != 0)
3785 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3788 /* This type describes each known response to the qSupported
3790 struct protocol_feature
3792 /* The name of this protocol feature. */
3795 /* The default for this protocol feature. */
3796 enum packet_support default_support
;
3798 /* The function to call when this feature is reported, or after
3799 qSupported processing if the feature is not supported.
3800 The first argument points to this structure. The second
3801 argument indicates whether the packet requested support be
3802 enabled, disabled, or probed (or the default, if this function
3803 is being called at the end of processing and this feature was
3804 not reported). The third argument may be NULL; if not NULL, it
3805 is a NUL-terminated string taken from the packet following
3806 this feature's name and an equals sign. */
3807 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3810 /* The corresponding packet for this feature. Only used if
3811 FUNC is remote_supported_packet. */
3816 remote_supported_packet (const struct protocol_feature
*feature
,
3817 enum packet_support support
,
3818 const char *argument
)
3822 warning (_("Remote qSupported response supplied an unexpected value for"
3823 " \"%s\"."), feature
->name
);
3827 if (remote_protocol_packets
[feature
->packet
].support
3828 == PACKET_SUPPORT_UNKNOWN
)
3829 remote_protocol_packets
[feature
->packet
].support
= support
;
3833 remote_packet_size (const struct protocol_feature
*feature
,
3834 enum packet_support support
, const char *value
)
3836 struct remote_state
*rs
= get_remote_state ();
3841 if (support
!= PACKET_ENABLE
)
3844 if (value
== NULL
|| *value
== '\0')
3846 warning (_("Remote target reported \"%s\" without a size."),
3852 packet_size
= strtol (value
, &value_end
, 16);
3853 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3855 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3856 feature
->name
, value
);
3860 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3862 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3863 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3864 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3867 /* Record the new maximum packet size. */
3868 rs
->explicit_packet_size
= packet_size
;
3872 remote_multi_process_feature (const struct protocol_feature
*feature
,
3873 enum packet_support support
, const char *value
)
3875 struct remote_state
*rs
= get_remote_state ();
3877 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3881 remote_non_stop_feature (const struct protocol_feature
*feature
,
3882 enum packet_support support
, const char *value
)
3884 struct remote_state
*rs
= get_remote_state ();
3886 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3890 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3891 enum packet_support support
,
3894 struct remote_state
*rs
= get_remote_state ();
3896 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3900 remote_cond_breakpoint_feature (const struct protocol_feature
*feature
,
3901 enum packet_support support
,
3904 struct remote_state
*rs
= get_remote_state ();
3906 rs
->cond_breakpoints
= (support
== PACKET_ENABLE
);
3910 remote_breakpoint_commands_feature (const struct protocol_feature
*feature
,
3911 enum packet_support support
,
3914 struct remote_state
*rs
= get_remote_state ();
3916 rs
->breakpoint_commands
= (support
== PACKET_ENABLE
);
3920 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3921 enum packet_support support
,
3924 struct remote_state
*rs
= get_remote_state ();
3926 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3930 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3931 enum packet_support support
,
3934 struct remote_state
*rs
= get_remote_state ();
3936 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3940 remote_install_in_trace_feature (const struct protocol_feature
*feature
,
3941 enum packet_support support
,
3944 struct remote_state
*rs
= get_remote_state ();
3946 rs
->install_in_trace
= (support
== PACKET_ENABLE
);
3950 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3951 enum packet_support support
,
3954 struct remote_state
*rs
= get_remote_state ();
3956 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3960 remote_enable_disable_tracepoint_feature (const struct protocol_feature
*feature
,
3961 enum packet_support support
,
3964 struct remote_state
*rs
= get_remote_state ();
3966 rs
->enable_disable_tracepoints
= (support
== PACKET_ENABLE
);
3970 remote_string_tracing_feature (const struct protocol_feature
*feature
,
3971 enum packet_support support
,
3974 struct remote_state
*rs
= get_remote_state ();
3976 rs
->string_tracing
= (support
== PACKET_ENABLE
);
3980 remote_augmented_libraries_svr4_read_feature
3981 (const struct protocol_feature
*feature
,
3982 enum packet_support support
, const char *value
)
3984 struct remote_state
*rs
= get_remote_state ();
3986 rs
->augmented_libraries_svr4_read
= (support
== PACKET_ENABLE
);
3989 static const struct protocol_feature remote_protocol_features
[] = {
3990 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3991 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3992 PACKET_qXfer_auxv
},
3993 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3994 PACKET_qXfer_features
},
3995 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3996 PACKET_qXfer_libraries
},
3997 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3998 PACKET_qXfer_libraries_svr4
},
3999 { "augmented-libraries-svr4-read", PACKET_DISABLE
,
4000 remote_augmented_libraries_svr4_read_feature
, -1 },
4001 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
4002 PACKET_qXfer_memory_map
},
4003 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
4004 PACKET_qXfer_spu_read
},
4005 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
4006 PACKET_qXfer_spu_write
},
4007 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
4008 PACKET_qXfer_osdata
},
4009 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
4010 PACKET_qXfer_threads
},
4011 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
4012 PACKET_qXfer_traceframe_info
},
4013 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
4014 PACKET_QPassSignals
},
4015 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
4016 PACKET_QProgramSignals
},
4017 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
4018 PACKET_QStartNoAckMode
},
4019 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
4020 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
4021 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
4022 PACKET_qXfer_siginfo_read
},
4023 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
4024 PACKET_qXfer_siginfo_write
},
4025 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
4026 PACKET_ConditionalTracepoints
},
4027 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_cond_breakpoint_feature
,
4028 PACKET_ConditionalBreakpoints
},
4029 { "BreakpointCommands", PACKET_DISABLE
, remote_breakpoint_commands_feature
,
4030 PACKET_BreakpointCommands
},
4031 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
4032 PACKET_FastTracepoints
},
4033 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
4034 PACKET_StaticTracepoints
},
4035 {"InstallInTrace", PACKET_DISABLE
, remote_install_in_trace_feature
,
4036 PACKET_InstallInTrace
},
4037 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
4039 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
4041 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
4043 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
4044 PACKET_TracepointSource
},
4045 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
4047 { "EnableDisableTracepoints", PACKET_DISABLE
,
4048 remote_enable_disable_tracepoint_feature
, -1 },
4049 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
4050 PACKET_qXfer_fdpic
},
4051 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
4053 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
4054 PACKET_QDisableRandomization
},
4055 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
4056 { "QTBuffer:size", PACKET_DISABLE
,
4057 remote_supported_packet
, PACKET_QTBuffer_size
},
4058 { "tracenz", PACKET_DISABLE
,
4059 remote_string_tracing_feature
, -1 },
4060 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
4061 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
4062 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
4063 PACKET_qXfer_btrace
}
4066 static char *remote_support_xml
;
4068 /* Register string appended to "xmlRegisters=" in qSupported query. */
4071 register_remote_support_xml (const char *xml
)
4073 #if defined(HAVE_LIBEXPAT)
4074 if (remote_support_xml
== NULL
)
4075 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
4078 char *copy
= xstrdup (remote_support_xml
+ 13);
4079 char *p
= strtok (copy
, ",");
4083 if (strcmp (p
, xml
) == 0)
4090 while ((p
= strtok (NULL
, ",")) != NULL
);
4093 remote_support_xml
= reconcat (remote_support_xml
,
4094 remote_support_xml
, ",", xml
,
4101 remote_query_supported_append (char *msg
, const char *append
)
4104 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
4106 return xstrdup (append
);
4110 remote_query_supported (void)
4112 struct remote_state
*rs
= get_remote_state ();
4115 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4117 /* The packet support flags are handled differently for this packet
4118 than for most others. We treat an error, a disabled packet, and
4119 an empty response identically: any features which must be reported
4120 to be used will be automatically disabled. An empty buffer
4121 accomplishes this, since that is also the representation for a list
4122 containing no features. */
4125 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
4128 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4130 q
= remote_query_supported_append (q
, "multiprocess+");
4132 if (remote_support_xml
)
4133 q
= remote_query_supported_append (q
, remote_support_xml
);
4135 q
= remote_query_supported_append (q
, "qRelocInsn+");
4137 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4140 do_cleanups (old_chain
);
4142 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4144 /* If an error occured, warn, but do not return - just reset the
4145 buffer to empty and go on to disable features. */
4146 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4149 warning (_("Remote failure reply: %s"), rs
->buf
);
4154 memset (seen
, 0, sizeof (seen
));
4159 enum packet_support is_supported
;
4160 char *p
, *end
, *name_end
, *value
;
4162 /* First separate out this item from the rest of the packet. If
4163 there's another item after this, we overwrite the separator
4164 (terminated strings are much easier to work with). */
4166 end
= strchr (p
, ';');
4169 end
= p
+ strlen (p
);
4179 warning (_("empty item in \"qSupported\" response"));
4184 name_end
= strchr (p
, '=');
4187 /* This is a name=value entry. */
4188 is_supported
= PACKET_ENABLE
;
4189 value
= name_end
+ 1;
4198 is_supported
= PACKET_ENABLE
;
4202 is_supported
= PACKET_DISABLE
;
4206 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4210 warning (_("unrecognized item \"%s\" "
4211 "in \"qSupported\" response"), p
);
4217 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4218 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4220 const struct protocol_feature
*feature
;
4223 feature
= &remote_protocol_features
[i
];
4224 feature
->func (feature
, is_supported
, value
);
4229 /* If we increased the packet size, make sure to increase the global
4230 buffer size also. We delay this until after parsing the entire
4231 qSupported packet, because this is the same buffer we were
4233 if (rs
->buf_size
< rs
->explicit_packet_size
)
4235 rs
->buf_size
= rs
->explicit_packet_size
;
4236 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4239 /* Handle the defaults for unmentioned features. */
4240 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4243 const struct protocol_feature
*feature
;
4245 feature
= &remote_protocol_features
[i
];
4246 feature
->func (feature
, feature
->default_support
, NULL
);
4250 /* Remove any of the remote.c targets from target stack. Upper targets depend
4251 on it so remove them first. */
4254 remote_unpush_target (void)
4256 pop_all_targets_above (process_stratum
- 1);
4260 remote_open_1 (char *name
, int from_tty
,
4261 struct target_ops
*target
, int extended_p
)
4263 struct remote_state
*rs
= get_remote_state ();
4266 error (_("To open a remote debug connection, you need to specify what\n"
4267 "serial device is attached to the remote system\n"
4268 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4270 /* See FIXME above. */
4271 if (!target_async_permitted
)
4272 wait_forever_enabled_p
= 1;
4274 /* If we're connected to a running target, target_preopen will kill it.
4275 Ask this question first, before target_preopen has a chance to kill
4277 if (rs
->remote_desc
!= NULL
&& !have_inferiors ())
4280 && !query (_("Already connected to a remote target. Disconnect? ")))
4281 error (_("Still connected."));
4284 /* Here the possibly existing remote target gets unpushed. */
4285 target_preopen (from_tty
);
4287 /* Make sure we send the passed signals list the next time we resume. */
4288 xfree (rs
->last_pass_packet
);
4289 rs
->last_pass_packet
= NULL
;
4291 /* Make sure we send the program signals list the next time we
4293 xfree (rs
->last_program_signals_packet
);
4294 rs
->last_program_signals_packet
= NULL
;
4296 remote_fileio_reset ();
4297 reopen_exec_file ();
4300 rs
->remote_desc
= remote_serial_open (name
);
4301 if (!rs
->remote_desc
)
4302 perror_with_name (name
);
4304 if (baud_rate
!= -1)
4306 if (serial_setbaudrate (rs
->remote_desc
, baud_rate
))
4308 /* The requested speed could not be set. Error out to
4309 top level after closing remote_desc. Take care to
4310 set remote_desc to NULL to avoid closing remote_desc
4312 serial_close (rs
->remote_desc
);
4313 rs
->remote_desc
= NULL
;
4314 perror_with_name (name
);
4318 serial_raw (rs
->remote_desc
);
4320 /* If there is something sitting in the buffer we might take it as a
4321 response to a command, which would be bad. */
4322 serial_flush_input (rs
->remote_desc
);
4326 puts_filtered ("Remote debugging using ");
4327 puts_filtered (name
);
4328 puts_filtered ("\n");
4330 push_target (target
); /* Switch to using remote target now. */
4332 /* Register extra event sources in the event loop. */
4333 remote_async_inferior_event_token
4334 = create_async_event_handler (remote_async_inferior_event_handler
,
4336 remote_notif_register_async_event_handler ();
4338 /* Reset the target state; these things will be queried either by
4339 remote_query_supported or as they are needed. */
4340 init_all_packet_configs ();
4341 rs
->cached_wait_status
= 0;
4342 rs
->explicit_packet_size
= 0;
4344 rs
->multi_process_aware
= 0;
4345 rs
->extended
= extended_p
;
4346 rs
->non_stop_aware
= 0;
4347 rs
->waiting_for_stop_reply
= 0;
4348 rs
->ctrlc_pending_p
= 0;
4350 rs
->general_thread
= not_sent_ptid
;
4351 rs
->continue_thread
= not_sent_ptid
;
4352 rs
->remote_traceframe_number
= -1;
4354 /* Probe for ability to use "ThreadInfo" query, as required. */
4355 rs
->use_threadinfo_query
= 1;
4356 rs
->use_threadextra_query
= 1;
4358 if (target_async_permitted
)
4360 /* With this target we start out by owning the terminal. */
4361 remote_async_terminal_ours_p
= 1;
4363 /* FIXME: cagney/1999-09-23: During the initial connection it is
4364 assumed that the target is already ready and able to respond to
4365 requests. Unfortunately remote_start_remote() eventually calls
4366 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4367 around this. Eventually a mechanism that allows
4368 wait_for_inferior() to expect/get timeouts will be
4370 wait_forever_enabled_p
= 0;
4373 /* First delete any symbols previously loaded from shared libraries. */
4374 no_shared_libraries (NULL
, 0);
4377 init_thread_list ();
4379 /* Start the remote connection. If error() or QUIT, discard this
4380 target (we'd otherwise be in an inconsistent state) and then
4381 propogate the error on up the exception chain. This ensures that
4382 the caller doesn't stumble along blindly assuming that the
4383 function succeeded. The CLI doesn't have this problem but other
4384 UI's, such as MI do.
4386 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4387 this function should return an error indication letting the
4388 caller restore the previous state. Unfortunately the command
4389 ``target remote'' is directly wired to this function making that
4390 impossible. On a positive note, the CLI side of this problem has
4391 been fixed - the function set_cmd_context() makes it possible for
4392 all the ``target ....'' commands to share a common callback
4393 function. See cli-dump.c. */
4395 volatile struct gdb_exception ex
;
4397 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4399 remote_start_remote (from_tty
, target
, extended_p
);
4403 /* Pop the partially set up target - unless something else did
4404 already before throwing the exception. */
4405 if (rs
->remote_desc
!= NULL
)
4406 remote_unpush_target ();
4407 if (target_async_permitted
)
4408 wait_forever_enabled_p
= 1;
4409 throw_exception (ex
);
4413 if (target_async_permitted
)
4414 wait_forever_enabled_p
= 1;
4417 /* This takes a program previously attached to and detaches it. After
4418 this is done, GDB can be used to debug some other program. We
4419 better not have left any breakpoints in the target program or it'll
4420 die when it hits one. */
4423 remote_detach_1 (char *args
, int from_tty
, int extended
)
4425 int pid
= ptid_get_pid (inferior_ptid
);
4426 struct remote_state
*rs
= get_remote_state ();
4429 error (_("Argument given to \"detach\" when remotely debugging."));
4431 if (!target_has_execution
)
4432 error (_("No process to detach from."));
4436 char *exec_file
= get_exec_file (0);
4437 if (exec_file
== NULL
)
4439 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4440 target_pid_to_str (pid_to_ptid (pid
)));
4441 gdb_flush (gdb_stdout
);
4444 /* Tell the remote target to detach. */
4445 if (remote_multi_process_p (rs
))
4446 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4448 strcpy (rs
->buf
, "D");
4451 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4453 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4455 else if (rs
->buf
[0] == '\0')
4456 error (_("Remote doesn't know how to detach"));
4458 error (_("Can't detach process."));
4460 if (from_tty
&& !extended
)
4461 puts_filtered (_("Ending remote debugging.\n"));
4463 target_mourn_inferior ();
4467 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4469 remote_detach_1 (args
, from_tty
, 0);
4473 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4475 remote_detach_1 (args
, from_tty
, 1);
4478 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4481 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4484 error (_("Argument given to \"disconnect\" when remotely debugging."));
4486 /* Make sure we unpush even the extended remote targets; mourn
4487 won't do it. So call remote_mourn_1 directly instead of
4488 target_mourn_inferior. */
4489 remote_mourn_1 (target
);
4492 puts_filtered ("Ending remote debugging.\n");
4495 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4496 be chatty about it. */
4499 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4501 struct remote_state
*rs
= get_remote_state ();
4503 char *wait_status
= NULL
;
4505 pid
= parse_pid_to_attach (args
);
4507 /* Remote PID can be freely equal to getpid, do not check it here the same
4508 way as in other targets. */
4510 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4511 error (_("This target does not support attaching to a process"));
4515 char *exec_file
= get_exec_file (0);
4518 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4519 target_pid_to_str (pid_to_ptid (pid
)));
4521 printf_unfiltered (_("Attaching to %s\n"),
4522 target_pid_to_str (pid_to_ptid (pid
)));
4524 gdb_flush (gdb_stdout
);
4527 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4529 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4531 if (packet_ok (rs
->buf
,
4532 &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
4536 /* Save the reply for later. */
4537 wait_status
= alloca (strlen (rs
->buf
) + 1);
4538 strcpy (wait_status
, rs
->buf
);
4540 else if (strcmp (rs
->buf
, "OK") != 0)
4541 error (_("Attaching to %s failed with: %s"),
4542 target_pid_to_str (pid_to_ptid (pid
)),
4545 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4546 error (_("This target does not support attaching to a process"));
4548 error (_("Attaching to %s failed"),
4549 target_pid_to_str (pid_to_ptid (pid
)));
4551 set_current_inferior (remote_add_inferior (0, pid
, 1));
4553 inferior_ptid
= pid_to_ptid (pid
);
4557 struct thread_info
*thread
;
4559 /* Get list of threads. */
4560 remote_threads_info (target
);
4562 thread
= first_thread_of_process (pid
);
4564 inferior_ptid
= thread
->ptid
;
4566 inferior_ptid
= pid_to_ptid (pid
);
4568 /* Invalidate our notion of the remote current thread. */
4569 record_currthread (rs
, minus_one_ptid
);
4573 /* Now, if we have thread information, update inferior_ptid. */
4574 inferior_ptid
= remote_current_thread (inferior_ptid
);
4576 /* Add the main thread to the thread list. */
4577 add_thread_silent (inferior_ptid
);
4580 /* Next, if the target can specify a description, read it. We do
4581 this before anything involving memory or registers. */
4582 target_find_description ();
4586 /* Use the previously fetched status. */
4587 gdb_assert (wait_status
!= NULL
);
4589 if (target_can_async_p ())
4591 struct notif_event
*reply
4592 = remote_notif_parse (¬if_client_stop
, wait_status
);
4594 push_stop_reply ((struct stop_reply
*) reply
);
4596 target_async (inferior_event_handler
, 0);
4600 gdb_assert (wait_status
!= NULL
);
4601 strcpy (rs
->buf
, wait_status
);
4602 rs
->cached_wait_status
= 1;
4606 gdb_assert (wait_status
== NULL
);
4610 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4612 extended_remote_attach_1 (ops
, args
, from_tty
);
4615 /* Convert hex digit A to a number. */
4620 if (a
>= '0' && a
<= '9')
4622 else if (a
>= 'a' && a
<= 'f')
4623 return a
- 'a' + 10;
4624 else if (a
>= 'A' && a
<= 'F')
4625 return a
- 'A' + 10;
4627 error (_("Reply contains invalid hex digit %d"), a
);
4631 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
4635 for (i
= 0; i
< count
; i
++)
4637 if (hex
[0] == 0 || hex
[1] == 0)
4639 /* Hex string is short, or of uneven length.
4640 Return the count that has been converted so far. */
4643 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
4649 /* Convert number NIB to a hex digit. */
4657 return 'a' + nib
- 10;
4661 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4665 /* May use a length, or a nul-terminated string as input. */
4667 count
= strlen ((char *) bin
);
4669 for (i
= 0; i
< count
; i
++)
4671 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4672 *hex
++ = tohex (*bin
++ & 0xf);
4678 /* Check for the availability of vCont. This function should also check
4682 remote_vcont_probe (struct remote_state
*rs
)
4686 strcpy (rs
->buf
, "vCont?");
4688 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4691 /* Make sure that the features we assume are supported. */
4692 if (strncmp (buf
, "vCont", 5) == 0)
4695 int support_s
, support_S
, support_c
, support_C
;
4701 rs
->supports_vCont
.t
= 0;
4702 rs
->supports_vCont
.r
= 0;
4703 while (p
&& *p
== ';')
4706 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4708 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4710 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4712 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4714 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4715 rs
->supports_vCont
.t
= 1;
4716 else if (*p
== 'r' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4717 rs
->supports_vCont
.r
= 1;
4719 p
= strchr (p
, ';');
4722 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4723 BUF will make packet_ok disable the packet. */
4724 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4728 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4731 /* Helper function for building "vCont" resumptions. Write a
4732 resumption to P. ENDP points to one-passed-the-end of the buffer
4733 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4734 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4735 resumed thread should be single-stepped and/or signalled. If PTID
4736 equals minus_one_ptid, then all threads are resumed; if PTID
4737 represents a process, then all threads of the process are resumed;
4738 the thread to be stepped and/or signalled is given in the global
4742 append_resumption (char *p
, char *endp
,
4743 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4745 struct remote_state
*rs
= get_remote_state ();
4747 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4748 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4750 /* GDB is willing to range step. */
4751 && use_range_stepping
4752 /* Target supports range stepping. */
4753 && rs
->supports_vCont
.r
4754 /* We don't currently support range stepping multiple
4755 threads with a wildcard (though the protocol allows it,
4756 so stubs shouldn't make an active effort to forbid
4758 && !(remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4760 struct thread_info
*tp
;
4762 if (ptid_equal (ptid
, minus_one_ptid
))
4764 /* If we don't know about the target thread's tid, then
4765 we're resuming magic_null_ptid (see caller). */
4766 tp
= find_thread_ptid (magic_null_ptid
);
4769 tp
= find_thread_ptid (ptid
);
4770 gdb_assert (tp
!= NULL
);
4772 if (tp
->control
.may_range_step
)
4774 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
4776 p
+= xsnprintf (p
, endp
- p
, ";r%s,%s",
4777 phex_nz (tp
->control
.step_range_start
,
4779 phex_nz (tp
->control
.step_range_end
,
4783 p
+= xsnprintf (p
, endp
- p
, ";s");
4786 p
+= xsnprintf (p
, endp
- p
, ";s");
4787 else if (siggnal
!= GDB_SIGNAL_0
)
4788 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4790 p
+= xsnprintf (p
, endp
- p
, ";c");
4792 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4796 /* All (-1) threads of process. */
4797 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4799 p
+= xsnprintf (p
, endp
- p
, ":");
4800 p
= write_ptid (p
, endp
, nptid
);
4802 else if (!ptid_equal (ptid
, minus_one_ptid
))
4804 p
+= xsnprintf (p
, endp
- p
, ":");
4805 p
= write_ptid (p
, endp
, ptid
);
4811 /* Append a vCont continue-with-signal action for threads that have a
4812 non-zero stop signal. */
4815 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4817 struct thread_info
*thread
;
4819 ALL_THREADS (thread
)
4820 if (ptid_match (thread
->ptid
, ptid
)
4821 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4822 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
4823 && signal_pass_state (thread
->suspend
.stop_signal
))
4825 p
= append_resumption (p
, endp
, thread
->ptid
,
4826 0, thread
->suspend
.stop_signal
);
4827 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4833 /* Resume the remote inferior by using a "vCont" packet. The thread
4834 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4835 resumed thread should be single-stepped and/or signalled. If PTID
4836 equals minus_one_ptid, then all threads are resumed; the thread to
4837 be stepped and/or signalled is given in the global INFERIOR_PTID.
4838 This function returns non-zero iff it resumes the inferior.
4840 This function issues a strict subset of all possible vCont commands at the
4844 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4846 struct remote_state
*rs
= get_remote_state ();
4850 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4851 remote_vcont_probe (rs
);
4853 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4857 endp
= rs
->buf
+ get_remote_packet_size ();
4859 /* If we could generate a wider range of packets, we'd have to worry
4860 about overflowing BUF. Should there be a generic
4861 "multi-part-packet" packet? */
4863 p
+= xsnprintf (p
, endp
- p
, "vCont");
4865 if (ptid_equal (ptid
, magic_null_ptid
))
4867 /* MAGIC_NULL_PTID means that we don't have any active threads,
4868 so we don't have any TID numbers the inferior will
4869 understand. Make sure to only send forms that do not specify
4871 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4873 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4875 /* Resume all threads (of all processes, or of a single
4876 process), with preference for INFERIOR_PTID. This assumes
4877 inferior_ptid belongs to the set of all threads we are about
4879 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4881 /* Step inferior_ptid, with or without signal. */
4882 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4885 /* Also pass down any pending signaled resumption for other
4886 threads not the current. */
4887 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4889 /* And continue others without a signal. */
4890 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4894 /* Scheduler locking; resume only PTID. */
4895 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4898 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4903 /* In non-stop, the stub replies to vCont with "OK". The stop
4904 reply will be reported asynchronously by means of a `%Stop'
4906 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4907 if (strcmp (rs
->buf
, "OK") != 0)
4908 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4914 /* Tell the remote machine to resume. */
4917 remote_resume (struct target_ops
*ops
,
4918 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4920 struct remote_state
*rs
= get_remote_state ();
4923 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
4924 (explained in remote-notif.c:handle_notification) so
4925 remote_notif_process is not called. We need find a place where
4926 it is safe to start a 'vNotif' sequence. It is good to do it
4927 before resuming inferior, because inferior was stopped and no RSP
4928 traffic at that moment. */
4930 remote_notif_process (¬if_client_stop
);
4932 rs
->last_sent_signal
= siggnal
;
4933 rs
->last_sent_step
= step
;
4935 /* The vCont packet doesn't need to specify threads via Hc. */
4936 /* No reverse support (yet) for vCont. */
4937 if (execution_direction
!= EXEC_REVERSE
)
4938 if (remote_vcont_resume (ptid
, step
, siggnal
))
4941 /* All other supported resume packets do use Hc, so set the continue
4943 if (ptid_equal (ptid
, minus_one_ptid
))
4944 set_continue_thread (any_thread_ptid
);
4946 set_continue_thread (ptid
);
4949 if (execution_direction
== EXEC_REVERSE
)
4951 /* We don't pass signals to the target in reverse exec mode. */
4952 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4953 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4957 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4958 error (_("Remote reverse-step not supported."));
4960 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4961 error (_("Remote reverse-continue not supported."));
4963 strcpy (buf
, step
? "bs" : "bc");
4965 else if (siggnal
!= GDB_SIGNAL_0
)
4967 buf
[0] = step
? 'S' : 'C';
4968 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4969 buf
[2] = tohex (((int) siggnal
) & 0xf);
4973 strcpy (buf
, step
? "s" : "c");
4978 /* We are about to start executing the inferior, let's register it
4979 with the event loop. NOTE: this is the one place where all the
4980 execution commands end up. We could alternatively do this in each
4981 of the execution commands in infcmd.c. */
4982 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4983 into infcmd.c in order to allow inferior function calls to work
4984 NOT asynchronously. */
4985 if (target_can_async_p ())
4986 target_async (inferior_event_handler
, 0);
4988 /* We've just told the target to resume. The remote server will
4989 wait for the inferior to stop, and then send a stop reply. In
4990 the mean time, we can't start another command/query ourselves
4991 because the stub wouldn't be ready to process it. This applies
4992 only to the base all-stop protocol, however. In non-stop (which
4993 only supports vCont), the stub replies with an "OK", and is
4994 immediate able to process further serial input. */
4996 rs
->waiting_for_stop_reply
= 1;
5000 /* Set up the signal handler for SIGINT, while the target is
5001 executing, ovewriting the 'regular' SIGINT signal handler. */
5003 async_initialize_sigint_signal_handler (void)
5005 signal (SIGINT
, async_handle_remote_sigint
);
5008 /* Signal handler for SIGINT, while the target is executing. */
5010 async_handle_remote_sigint (int sig
)
5012 signal (sig
, async_handle_remote_sigint_twice
);
5013 mark_async_signal_handler (async_sigint_remote_token
);
5016 /* Signal handler for SIGINT, installed after SIGINT has already been
5017 sent once. It will take effect the second time that the user sends
5020 async_handle_remote_sigint_twice (int sig
)
5022 signal (sig
, async_handle_remote_sigint
);
5023 mark_async_signal_handler (async_sigint_remote_twice_token
);
5026 /* Perform the real interruption of the target execution, in response
5029 async_remote_interrupt (gdb_client_data arg
)
5032 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
5034 target_stop (inferior_ptid
);
5037 /* Perform interrupt, if the first attempt did not succeed. Just give
5038 up on the target alltogether. */
5040 async_remote_interrupt_twice (gdb_client_data arg
)
5043 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
5048 /* Reinstall the usual SIGINT handlers, after the target has
5051 async_cleanup_sigint_signal_handler (void *dummy
)
5053 signal (SIGINT
, handle_sigint
);
5056 /* Send ^C to target to halt it. Target will respond, and send us a
5058 static void (*ofunc
) (int);
5060 /* The command line interface's stop routine. This function is installed
5061 as a signal handler for SIGINT. The first time a user requests a
5062 stop, we call remote_stop to send a break or ^C. If there is no
5063 response from the target (it didn't stop when the user requested it),
5064 we ask the user if he'd like to detach from the target. */
5066 sync_remote_interrupt (int signo
)
5068 /* If this doesn't work, try more severe steps. */
5069 signal (signo
, sync_remote_interrupt_twice
);
5071 gdb_call_async_signal_handler (async_sigint_remote_token
, 1);
5074 /* The user typed ^C twice. */
5077 sync_remote_interrupt_twice (int signo
)
5079 signal (signo
, ofunc
);
5080 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 1);
5081 signal (signo
, sync_remote_interrupt
);
5084 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
5085 thread, all threads of a remote process, or all threads of all
5089 remote_stop_ns (ptid_t ptid
)
5091 struct remote_state
*rs
= get_remote_state ();
5093 char *endp
= rs
->buf
+ get_remote_packet_size ();
5095 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
5096 remote_vcont_probe (rs
);
5098 if (!rs
->supports_vCont
.t
)
5099 error (_("Remote server does not support stopping threads"));
5101 if (ptid_equal (ptid
, minus_one_ptid
)
5102 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5103 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
5108 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
5110 if (ptid_is_pid (ptid
))
5111 /* All (-1) threads of process. */
5112 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
5115 /* Small optimization: if we already have a stop reply for
5116 this thread, no use in telling the stub we want this
5118 if (peek_stop_reply (ptid
))
5124 write_ptid (p
, endp
, nptid
);
5127 /* In non-stop, we get an immediate OK reply. The stop reply will
5128 come in asynchronously by notification. */
5130 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5131 if (strcmp (rs
->buf
, "OK") != 0)
5132 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
5135 /* All-stop version of target_stop. Sends a break or a ^C to stop the
5136 remote target. It is undefined which thread of which process
5137 reports the stop. */
5140 remote_stop_as (ptid_t ptid
)
5142 struct remote_state
*rs
= get_remote_state ();
5144 rs
->ctrlc_pending_p
= 1;
5146 /* If the inferior is stopped already, but the core didn't know
5147 about it yet, just ignore the request. The cached wait status
5148 will be collected in remote_wait. */
5149 if (rs
->cached_wait_status
)
5152 /* Send interrupt_sequence to remote target. */
5153 send_interrupt_sequence ();
5156 /* This is the generic stop called via the target vector. When a target
5157 interrupt is requested, either by the command line or the GUI, we
5158 will eventually end up here. */
5161 remote_stop (ptid_t ptid
)
5164 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5167 remote_stop_ns (ptid
);
5169 remote_stop_as (ptid
);
5172 /* Ask the user what to do when an interrupt is received. */
5175 interrupt_query (void)
5177 target_terminal_ours ();
5179 if (target_can_async_p ())
5181 signal (SIGINT
, handle_sigint
);
5186 if (query (_("Interrupted while waiting for the program.\n\
5187 Give up (and stop debugging it)? ")))
5189 remote_unpush_target ();
5194 target_terminal_inferior ();
5197 /* Enable/disable target terminal ownership. Most targets can use
5198 terminal groups to control terminal ownership. Remote targets are
5199 different in that explicit transfer of ownership to/from GDB/target
5203 remote_terminal_inferior (void)
5205 if (!target_async_permitted
)
5206 /* Nothing to do. */
5209 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5210 idempotent. The event-loop GDB talking to an asynchronous target
5211 with a synchronous command calls this function from both
5212 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5213 transfer the terminal to the target when it shouldn't this guard
5215 if (!remote_async_terminal_ours_p
)
5217 delete_file_handler (input_fd
);
5218 remote_async_terminal_ours_p
= 0;
5219 async_initialize_sigint_signal_handler ();
5220 /* NOTE: At this point we could also register our selves as the
5221 recipient of all input. Any characters typed could then be
5222 passed on down to the target. */
5226 remote_terminal_ours (void)
5228 if (!target_async_permitted
)
5229 /* Nothing to do. */
5232 /* See FIXME in remote_terminal_inferior. */
5233 if (remote_async_terminal_ours_p
)
5235 async_cleanup_sigint_signal_handler (NULL
);
5236 add_file_handler (input_fd
, stdin_event_handler
, 0);
5237 remote_async_terminal_ours_p
= 1;
5241 remote_console_output (char *msg
)
5245 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5248 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5252 fputs_unfiltered (tb
, gdb_stdtarg
);
5254 gdb_flush (gdb_stdtarg
);
5257 typedef struct cached_reg
5260 gdb_byte data
[MAX_REGISTER_SIZE
];
5263 DEF_VEC_O(cached_reg_t
);
5265 typedef struct stop_reply
5267 struct notif_event base
;
5269 /* The identifier of the thread about this event */
5272 struct target_waitstatus ws
;
5274 /* Expedited registers. This makes remote debugging a bit more
5275 efficient for those targets that provide critical registers as
5276 part of their normal status mechanism (as another roundtrip to
5277 fetch them is avoided). */
5278 VEC(cached_reg_t
) *regcache
;
5280 int stopped_by_watchpoint_p
;
5281 CORE_ADDR watch_data_address
;
5289 DECLARE_QUEUE_P (stop_reply_p
);
5290 DEFINE_QUEUE_P (stop_reply_p
);
5291 /* The list of already fetched and acknowledged stop events. This
5292 queue is used for notification Stop, and other notifications
5293 don't need queue for their events, because the notification events
5294 of Stop can't be consumed immediately, so that events should be
5295 queued first, and be consumed by remote_wait_{ns,as} one per
5296 time. Other notifications can consume their events immediately,
5297 so queue is not needed for them. */
5298 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5301 stop_reply_xfree (struct stop_reply
*r
)
5305 VEC_free (cached_reg_t
, r
->regcache
);
5311 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
5312 struct notif_event
*event
)
5314 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
5318 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
5319 struct notif_event
*event
)
5321 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
5324 putpkt ((char *) self
->ack_command
);
5326 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
5327 /* We got an unknown stop reply. */
5328 error (_("Unknown stop reply"));
5330 push_stop_reply (stop_reply
);
5334 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
5336 /* We can't get pending events in remote_notif_process for
5337 notification stop, and we have to do this in remote_wait_ns
5338 instead. If we fetch all queued events from stub, remote stub
5339 may exit and we have no chance to process them back in
5341 mark_async_event_handler (remote_async_inferior_event_token
);
5346 stop_reply_dtr (struct notif_event
*event
)
5348 struct stop_reply
*r
= (struct stop_reply
*) event
;
5350 VEC_free (cached_reg_t
, r
->regcache
);
5353 static struct notif_event
*
5354 remote_notif_stop_alloc_reply (void)
5356 struct notif_event
*r
5357 = (struct notif_event
*) XMALLOC (struct stop_reply
);
5359 r
->dtr
= stop_reply_dtr
;
5364 /* A client of notification Stop. */
5366 struct notif_client notif_client_stop
=
5370 remote_notif_stop_parse
,
5371 remote_notif_stop_ack
,
5372 remote_notif_stop_can_get_pending_events
,
5373 remote_notif_stop_alloc_reply
,
5377 /* A parameter to pass data in and out. */
5379 struct queue_iter_param
5382 struct stop_reply
*output
;
5385 /* Remove all queue elements meet the condition it checks. */
5388 remote_notif_remove_all (QUEUE (stop_reply_p
) *q
,
5389 QUEUE_ITER (stop_reply_p
) *iter
,
5393 struct queue_iter_param
*param
= data
;
5394 struct inferior
*inf
= param
->input
;
5396 if (inf
== NULL
|| ptid_get_pid (event
->ptid
) == inf
->pid
)
5398 stop_reply_xfree (event
);
5399 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5405 /* Discard all pending stop replies of inferior INF. If INF is NULL,
5406 discard everything. */
5409 discard_pending_stop_replies (struct inferior
*inf
)
5412 struct queue_iter_param param
;
5413 struct stop_reply
*reply
5414 = (struct stop_reply
*) notif_client_stop
.pending_event
;
5416 /* Discard the in-flight notification. */
5419 || ptid_get_pid (reply
->ptid
) == inf
->pid
))
5421 stop_reply_xfree (reply
);
5422 notif_client_stop
.pending_event
= NULL
;
5426 param
.output
= NULL
;
5427 /* Discard the stop replies we have already pulled with
5429 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5430 remote_notif_remove_all
, ¶m
);
5433 /* A parameter to pass data in and out. */
5436 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
5437 QUEUE_ITER (stop_reply_p
) *iter
,
5441 struct queue_iter_param
*param
= data
;
5442 ptid_t
*ptid
= param
->input
;
5444 if (ptid_match (event
->ptid
, *ptid
))
5446 param
->output
= event
;
5447 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5454 /* Remove the first reply in 'stop_reply_queue' which matches
5457 static struct stop_reply
*
5458 remote_notif_remove_queued_reply (ptid_t ptid
)
5460 struct queue_iter_param param
;
5462 param
.input
= &ptid
;
5463 param
.output
= NULL
;
5465 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5466 remote_notif_remove_once_on_match
, ¶m
);
5468 fprintf_unfiltered (gdb_stdlog
,
5469 "notif: discard queued event: 'Stop' in %s\n",
5470 target_pid_to_str (ptid
));
5472 return param
.output
;
5475 /* Look for a queued stop reply belonging to PTID. If one is found,
5476 remove it from the queue, and return it. Returns NULL if none is
5477 found. If there are still queued events left to process, tell the
5478 event loop to get back to target_wait soon. */
5480 static struct stop_reply
*
5481 queued_stop_reply (ptid_t ptid
)
5483 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
5485 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5486 /* There's still at least an event left. */
5487 mark_async_event_handler (remote_async_inferior_event_token
);
5492 /* Push a fully parsed stop reply in the stop reply queue. Since we
5493 know that we now have at least one queued event left to pass to the
5494 core side, tell the event loop to get back to target_wait soon. */
5497 push_stop_reply (struct stop_reply
*new_event
)
5499 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
5502 fprintf_unfiltered (gdb_stdlog
,
5503 "notif: push 'Stop' %s to queue %d\n",
5504 target_pid_to_str (new_event
->ptid
),
5505 QUEUE_length (stop_reply_p
,
5508 mark_async_event_handler (remote_async_inferior_event_token
);
5512 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
5513 QUEUE_ITER (stop_reply_p
) *iter
,
5514 struct stop_reply
*event
,
5517 ptid_t
*ptid
= data
;
5519 return !(ptid_equal (*ptid
, event
->ptid
)
5520 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
5523 /* Returns true if we have a stop reply for PTID. */
5526 peek_stop_reply (ptid_t ptid
)
5528 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5529 stop_reply_match_ptid_and_ws
, &ptid
);
5532 /* Parse the stop reply in BUF. Either the function succeeds, and the
5533 result is stored in EVENT, or throws an error. */
5536 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5538 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5542 event
->ptid
= null_ptid
;
5543 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5544 event
->ws
.value
.integer
= 0;
5545 event
->solibs_changed
= 0;
5546 event
->replay_event
= 0;
5547 event
->stopped_by_watchpoint_p
= 0;
5548 event
->regcache
= NULL
;
5553 case 'T': /* Status with PC, SP, FP, ... */
5554 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5555 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5557 n... = register number
5558 r... = register contents
5561 p
= &buf
[3]; /* after Txx */
5569 /* If the packet contains a register number, save it in
5570 pnum and set p1 to point to the character following it.
5571 Otherwise p1 points to p. */
5573 /* If this packet is an awatch packet, don't parse the 'a'
5574 as a register number. */
5576 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5577 && strncmp (p
, "core", strlen ("core") != 0))
5579 /* Read the ``P'' register number. */
5580 pnum
= strtol (p
, &p_temp
, 16);
5586 if (p1
== p
) /* No register number present here. */
5588 p1
= strchr (p
, ':');
5590 error (_("Malformed packet(a) (missing colon): %s\n\
5593 if (strncmp (p
, "thread", p1
- p
) == 0)
5594 event
->ptid
= read_ptid (++p1
, &p
);
5595 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5596 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5597 || (strncmp (p
, "awatch", p1
- p
) == 0))
5599 event
->stopped_by_watchpoint_p
= 1;
5600 p
= unpack_varlen_hex (++p1
, &addr
);
5601 event
->watch_data_address
= (CORE_ADDR
) addr
;
5603 else if (strncmp (p
, "library", p1
- p
) == 0)
5607 while (*p_temp
&& *p_temp
!= ';')
5610 event
->solibs_changed
= 1;
5613 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5615 /* NO_HISTORY event.
5616 p1 will indicate "begin" or "end", but
5617 it makes no difference for now, so ignore it. */
5618 event
->replay_event
= 1;
5619 p_temp
= strchr (p1
+ 1, ';');
5623 else if (strncmp (p
, "core", p1
- p
) == 0)
5627 p
= unpack_varlen_hex (++p1
, &c
);
5632 /* Silently skip unknown optional info. */
5633 p_temp
= strchr (p1
+ 1, ';');
5640 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5641 cached_reg_t cached_reg
;
5646 error (_("Malformed packet(b) (missing colon): %s\n\
5652 error (_("Remote sent bad register number %s: %s\n\
5654 hex_string (pnum
), p
, buf
);
5656 cached_reg
.num
= reg
->regnum
;
5658 fieldsize
= hex2bin (p
, cached_reg
.data
,
5659 register_size (target_gdbarch (),
5662 if (fieldsize
< register_size (target_gdbarch (),
5664 warning (_("Remote reply is too short: %s"), buf
);
5666 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5670 error (_("Remote register badly formatted: %s\nhere: %s"),
5675 case 'S': /* Old style status, just signal only. */
5676 if (event
->solibs_changed
)
5677 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5678 else if (event
->replay_event
)
5679 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5682 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5683 event
->ws
.value
.sig
= (enum gdb_signal
)
5684 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
5687 case 'W': /* Target exited. */
5694 /* GDB used to accept only 2 hex chars here. Stubs should
5695 only send more if they detect GDB supports multi-process
5697 p
= unpack_varlen_hex (&buf
[1], &value
);
5701 /* The remote process exited. */
5702 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5703 event
->ws
.value
.integer
= value
;
5707 /* The remote process exited with a signal. */
5708 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5709 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5712 /* If no process is specified, assume inferior_ptid. */
5713 pid
= ptid_get_pid (inferior_ptid
);
5722 else if (strncmp (p
,
5723 "process:", sizeof ("process:") - 1) == 0)
5727 p
+= sizeof ("process:") - 1;
5728 unpack_varlen_hex (p
, &upid
);
5732 error (_("unknown stop reply packet: %s"), buf
);
5735 error (_("unknown stop reply packet: %s"), buf
);
5736 event
->ptid
= pid_to_ptid (pid
);
5741 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5742 error (_("No process or thread specified in stop reply: %s"), buf
);
5745 /* When the stub wants to tell GDB about a new notification reply, it
5746 sends a notification (%Stop, for example). Those can come it at
5747 any time, hence, we have to make sure that any pending
5748 putpkt/getpkt sequence we're making is finished, before querying
5749 the stub for more events with the corresponding ack command
5750 (vStopped, for example). E.g., if we started a vStopped sequence
5751 immediately upon receiving the notification, something like this
5759 1.6) <-- (registers reply to step #1.3)
5761 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5764 To solve this, whenever we parse a %Stop notification successfully,
5765 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5766 doing whatever we were doing:
5772 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5773 2.5) <-- (registers reply to step #2.3)
5775 Eventualy after step #2.5, we return to the event loop, which
5776 notices there's an event on the
5777 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5778 associated callback --- the function below. At this point, we're
5779 always safe to start a vStopped sequence. :
5782 2.7) <-- T05 thread:2
5788 remote_notif_get_pending_events (struct notif_client
*nc
)
5790 struct remote_state
*rs
= get_remote_state ();
5792 if (nc
->pending_event
)
5795 fprintf_unfiltered (gdb_stdlog
,
5796 "notif: process: '%s' ack pending event\n",
5800 nc
->ack (nc
, rs
->buf
, nc
->pending_event
);
5801 nc
->pending_event
= NULL
;
5805 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5806 if (strcmp (rs
->buf
, "OK") == 0)
5809 remote_notif_ack (nc
, rs
->buf
);
5815 fprintf_unfiltered (gdb_stdlog
,
5816 "notif: process: '%s' no pending reply\n",
5821 /* Called when it is decided that STOP_REPLY holds the info of the
5822 event that is to be returned to the core. This function always
5823 destroys STOP_REPLY. */
5826 process_stop_reply (struct stop_reply
*stop_reply
,
5827 struct target_waitstatus
*status
)
5831 *status
= stop_reply
->ws
;
5832 ptid
= stop_reply
->ptid
;
5834 /* If no thread/process was reported by the stub, assume the current
5836 if (ptid_equal (ptid
, null_ptid
))
5837 ptid
= inferior_ptid
;
5839 if (status
->kind
!= TARGET_WAITKIND_EXITED
5840 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5842 /* Expedited registers. */
5843 if (stop_reply
->regcache
)
5845 struct regcache
*regcache
5846 = get_thread_arch_regcache (ptid
, target_gdbarch ());
5851 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5853 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5854 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5857 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5858 remote_watch_data_address
= stop_reply
->watch_data_address
;
5860 remote_notice_new_inferior (ptid
, 0);
5861 demand_private_info (ptid
)->core
= stop_reply
->core
;
5864 stop_reply_xfree (stop_reply
);
5868 /* The non-stop mode version of target_wait. */
5871 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5873 struct remote_state
*rs
= get_remote_state ();
5874 struct stop_reply
*stop_reply
;
5878 /* If in non-stop mode, get out of getpkt even if a
5879 notification is received. */
5881 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5882 0 /* forever */, &is_notif
);
5885 if (ret
!= -1 && !is_notif
)
5888 case 'E': /* Error of some sort. */
5889 /* We're out of sync with the target now. Did it continue
5890 or not? We can't tell which thread it was in non-stop,
5891 so just ignore this. */
5892 warning (_("Remote failure reply: %s"), rs
->buf
);
5894 case 'O': /* Console output. */
5895 remote_console_output (rs
->buf
+ 1);
5898 warning (_("Invalid remote reply: %s"), rs
->buf
);
5902 /* Acknowledge a pending stop reply that may have arrived in the
5904 if (notif_client_stop
.pending_event
!= NULL
)
5905 remote_notif_get_pending_events (¬if_client_stop
);
5907 /* If indeed we noticed a stop reply, we're done. */
5908 stop_reply
= queued_stop_reply (ptid
);
5909 if (stop_reply
!= NULL
)
5910 return process_stop_reply (stop_reply
, status
);
5912 /* Still no event. If we're just polling for an event, then
5913 return to the event loop. */
5914 if (options
& TARGET_WNOHANG
)
5916 status
->kind
= TARGET_WAITKIND_IGNORE
;
5917 return minus_one_ptid
;
5920 /* Otherwise do a blocking wait. */
5921 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5922 1 /* forever */, &is_notif
);
5926 /* Wait until the remote machine stops, then return, storing status in
5927 STATUS just as `wait' would. */
5930 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5932 struct remote_state
*rs
= get_remote_state ();
5933 ptid_t event_ptid
= null_ptid
;
5935 struct stop_reply
*stop_reply
;
5939 status
->kind
= TARGET_WAITKIND_IGNORE
;
5940 status
->value
.integer
= 0;
5942 stop_reply
= queued_stop_reply (ptid
);
5943 if (stop_reply
!= NULL
)
5944 return process_stop_reply (stop_reply
, status
);
5946 if (rs
->cached_wait_status
)
5947 /* Use the cached wait status, but only once. */
5948 rs
->cached_wait_status
= 0;
5954 if (!target_is_async_p ())
5956 ofunc
= signal (SIGINT
, sync_remote_interrupt
);
5957 /* If the user hit C-c before this packet, or between packets,
5958 pretend that it was hit right here. */
5959 if (check_quit_flag ())
5962 sync_remote_interrupt (SIGINT
);
5966 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5967 _never_ wait for ever -> test on target_is_async_p().
5968 However, before we do that we need to ensure that the caller
5969 knows how to take the target into/out of async mode. */
5970 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5971 wait_forever_enabled_p
, &is_notif
);
5973 if (!target_is_async_p ())
5974 signal (SIGINT
, ofunc
);
5976 /* GDB gets a notification. Return to core as this event is
5978 if (ret
!= -1 && is_notif
)
5979 return minus_one_ptid
;
5984 remote_stopped_by_watchpoint_p
= 0;
5986 /* We got something. */
5987 rs
->waiting_for_stop_reply
= 0;
5989 /* Assume that the target has acknowledged Ctrl-C unless we receive
5990 an 'F' or 'O' packet. */
5991 if (buf
[0] != 'F' && buf
[0] != 'O')
5992 rs
->ctrlc_pending_p
= 0;
5996 case 'E': /* Error of some sort. */
5997 /* We're out of sync with the target now. Did it continue or
5998 not? Not is more likely, so report a stop. */
5999 warning (_("Remote failure reply: %s"), buf
);
6000 status
->kind
= TARGET_WAITKIND_STOPPED
;
6001 status
->value
.sig
= GDB_SIGNAL_0
;
6003 case 'F': /* File-I/O request. */
6004 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
6005 rs
->ctrlc_pending_p
= 0;
6007 case 'T': case 'S': case 'X': case 'W':
6009 struct stop_reply
*stop_reply
6010 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
6013 event_ptid
= process_stop_reply (stop_reply
, status
);
6016 case 'O': /* Console output. */
6017 remote_console_output (buf
+ 1);
6019 /* The target didn't really stop; keep waiting. */
6020 rs
->waiting_for_stop_reply
= 1;
6024 if (rs
->last_sent_signal
!= GDB_SIGNAL_0
)
6026 /* Zero length reply means that we tried 'S' or 'C' and the
6027 remote system doesn't support it. */
6028 target_terminal_ours_for_output ();
6030 ("Can't send signals to this remote system. %s not sent.\n",
6031 gdb_signal_to_name (rs
->last_sent_signal
));
6032 rs
->last_sent_signal
= GDB_SIGNAL_0
;
6033 target_terminal_inferior ();
6035 strcpy ((char *) buf
, rs
->last_sent_step
? "s" : "c");
6036 putpkt ((char *) buf
);
6038 /* We just told the target to resume, so a stop reply is in
6040 rs
->waiting_for_stop_reply
= 1;
6043 /* else fallthrough */
6045 warning (_("Invalid remote reply: %s"), buf
);
6047 rs
->waiting_for_stop_reply
= 1;
6051 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
6053 /* Nothing interesting happened. If we're doing a non-blocking
6054 poll, we're done. Otherwise, go back to waiting. */
6055 if (options
& TARGET_WNOHANG
)
6056 return minus_one_ptid
;
6060 else if (status
->kind
!= TARGET_WAITKIND_EXITED
6061 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
6063 if (!ptid_equal (event_ptid
, null_ptid
))
6064 record_currthread (rs
, event_ptid
);
6066 event_ptid
= inferior_ptid
;
6069 /* A process exit. Invalidate our notion of current thread. */
6070 record_currthread (rs
, minus_one_ptid
);
6075 /* Wait until the remote machine stops, then return, storing status in
6076 STATUS just as `wait' would. */
6079 remote_wait (struct target_ops
*ops
,
6080 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6085 event_ptid
= remote_wait_ns (ptid
, status
, options
);
6087 event_ptid
= remote_wait_as (ptid
, status
, options
);
6089 if (target_can_async_p ())
6091 /* If there are are events left in the queue tell the event loop
6093 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
6094 mark_async_event_handler (remote_async_inferior_event_token
);
6100 /* Fetch a single register using a 'p' packet. */
6103 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
6105 struct remote_state
*rs
= get_remote_state ();
6107 char regp
[MAX_REGISTER_SIZE
];
6110 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
6113 if (reg
->pnum
== -1)
6118 p
+= hexnumstr (p
, reg
->pnum
);
6121 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6125 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
6129 case PACKET_UNKNOWN
:
6132 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
6133 gdbarch_register_name (get_regcache_arch (regcache
),
6138 /* If this register is unfetchable, tell the regcache. */
6141 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6145 /* Otherwise, parse and supply the value. */
6151 error (_("fetch_register_using_p: early buf termination"));
6153 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6156 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
6160 /* Fetch the registers included in the target's 'g' packet. */
6163 send_g_packet (void)
6165 struct remote_state
*rs
= get_remote_state ();
6168 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
6169 remote_send (&rs
->buf
, &rs
->buf_size
);
6171 /* We can get out of synch in various cases. If the first character
6172 in the buffer is not a hex character, assume that has happened
6173 and try to fetch another packet to read. */
6174 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
6175 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
6176 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
6177 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
6180 fprintf_unfiltered (gdb_stdlog
,
6181 "Bad register packet; fetching a new packet\n");
6182 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6185 buf_len
= strlen (rs
->buf
);
6187 /* Sanity check the received packet. */
6188 if (buf_len
% 2 != 0)
6189 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
6195 process_g_packet (struct regcache
*regcache
)
6197 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6198 struct remote_state
*rs
= get_remote_state ();
6199 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6204 buf_len
= strlen (rs
->buf
);
6206 /* Further sanity checks, with knowledge of the architecture. */
6207 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
6208 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
6210 /* Save the size of the packet sent to us by the target. It is used
6211 as a heuristic when determining the max size of packets that the
6212 target can safely receive. */
6213 if (rsa
->actual_register_packet_size
== 0)
6214 rsa
->actual_register_packet_size
= buf_len
;
6216 /* If this is smaller than we guessed the 'g' packet would be,
6217 update our records. A 'g' reply that doesn't include a register's
6218 value implies either that the register is not available, or that
6219 the 'p' packet must be used. */
6220 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
6222 rsa
->sizeof_g_packet
= buf_len
/ 2;
6224 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6226 if (rsa
->regs
[i
].pnum
== -1)
6229 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
6230 rsa
->regs
[i
].in_g_packet
= 0;
6232 rsa
->regs
[i
].in_g_packet
= 1;
6236 regs
= alloca (rsa
->sizeof_g_packet
);
6238 /* Unimplemented registers read as all bits zero. */
6239 memset (regs
, 0, rsa
->sizeof_g_packet
);
6241 /* Reply describes registers byte by byte, each byte encoded as two
6242 hex characters. Suck them all up, then supply them to the
6243 register cacheing/storage mechanism. */
6246 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6248 if (p
[0] == 0 || p
[1] == 0)
6249 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6250 internal_error (__FILE__
, __LINE__
,
6251 _("unexpected end of 'g' packet reply"));
6253 if (p
[0] == 'x' && p
[1] == 'x')
6254 regs
[i
] = 0; /* 'x' */
6256 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6260 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6262 struct packet_reg
*r
= &rsa
->regs
[i
];
6266 if (r
->offset
* 2 >= strlen (rs
->buf
))
6267 /* This shouldn't happen - we adjusted in_g_packet above. */
6268 internal_error (__FILE__
, __LINE__
,
6269 _("unexpected end of 'g' packet reply"));
6270 else if (rs
->buf
[r
->offset
* 2] == 'x')
6272 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6273 /* The register isn't available, mark it as such (at
6274 the same time setting the value to zero). */
6275 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6278 regcache_raw_supply (regcache
, r
->regnum
,
6285 fetch_registers_using_g (struct regcache
*regcache
)
6288 process_g_packet (regcache
);
6291 /* Make the remote selected traceframe match GDB's selected
6295 set_remote_traceframe (void)
6298 struct remote_state
*rs
= get_remote_state ();
6300 if (rs
->remote_traceframe_number
== get_traceframe_number ())
6303 /* Avoid recursion, remote_trace_find calls us again. */
6304 rs
->remote_traceframe_number
= get_traceframe_number ();
6306 newnum
= target_trace_find (tfind_number
,
6307 get_traceframe_number (), 0, 0, NULL
);
6309 /* Should not happen. If it does, all bets are off. */
6310 if (newnum
!= get_traceframe_number ())
6311 warning (_("could not set remote traceframe"));
6315 remote_fetch_registers (struct target_ops
*ops
,
6316 struct regcache
*regcache
, int regnum
)
6318 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6321 set_remote_traceframe ();
6322 set_general_thread (inferior_ptid
);
6326 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6328 gdb_assert (reg
!= NULL
);
6330 /* If this register might be in the 'g' packet, try that first -
6331 we are likely to read more than one register. If this is the
6332 first 'g' packet, we might be overly optimistic about its
6333 contents, so fall back to 'p'. */
6334 if (reg
->in_g_packet
)
6336 fetch_registers_using_g (regcache
);
6337 if (reg
->in_g_packet
)
6341 if (fetch_register_using_p (regcache
, reg
))
6344 /* This register is not available. */
6345 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6350 fetch_registers_using_g (regcache
);
6352 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6353 if (!rsa
->regs
[i
].in_g_packet
)
6354 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6356 /* This register is not available. */
6357 regcache_raw_supply (regcache
, i
, NULL
);
6361 /* Prepare to store registers. Since we may send them all (using a
6362 'G' request), we have to read out the ones we don't want to change
6366 remote_prepare_to_store (struct regcache
*regcache
)
6368 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6370 gdb_byte buf
[MAX_REGISTER_SIZE
];
6372 /* Make sure the entire registers array is valid. */
6373 switch (remote_protocol_packets
[PACKET_P
].support
)
6375 case PACKET_DISABLE
:
6376 case PACKET_SUPPORT_UNKNOWN
:
6377 /* Make sure all the necessary registers are cached. */
6378 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6379 if (rsa
->regs
[i
].in_g_packet
)
6380 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6387 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6388 packet was not recognized. */
6391 store_register_using_P (const struct regcache
*regcache
,
6392 struct packet_reg
*reg
)
6394 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6395 struct remote_state
*rs
= get_remote_state ();
6396 /* Try storing a single register. */
6397 char *buf
= rs
->buf
;
6398 gdb_byte regp
[MAX_REGISTER_SIZE
];
6401 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
6404 if (reg
->pnum
== -1)
6407 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6408 p
= buf
+ strlen (buf
);
6409 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6410 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6412 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6414 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6419 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6420 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6421 case PACKET_UNKNOWN
:
6424 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6428 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6429 contents of the register cache buffer. FIXME: ignores errors. */
6432 store_registers_using_G (const struct regcache
*regcache
)
6434 struct remote_state
*rs
= get_remote_state ();
6435 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6439 /* Extract all the registers in the regcache copying them into a
6444 regs
= alloca (rsa
->sizeof_g_packet
);
6445 memset (regs
, 0, rsa
->sizeof_g_packet
);
6446 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6448 struct packet_reg
*r
= &rsa
->regs
[i
];
6451 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6455 /* Command describes registers byte by byte,
6456 each byte encoded as two hex characters. */
6459 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6461 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6463 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6464 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6465 error (_("Could not write registers; remote failure reply '%s'"),
6469 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6470 of the register cache buffer. FIXME: ignores errors. */
6473 remote_store_registers (struct target_ops
*ops
,
6474 struct regcache
*regcache
, int regnum
)
6476 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6479 set_remote_traceframe ();
6480 set_general_thread (inferior_ptid
);
6484 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6486 gdb_assert (reg
!= NULL
);
6488 /* Always prefer to store registers using the 'P' packet if
6489 possible; we often change only a small number of registers.
6490 Sometimes we change a larger number; we'd need help from a
6491 higher layer to know to use 'G'. */
6492 if (store_register_using_P (regcache
, reg
))
6495 /* For now, don't complain if we have no way to write the
6496 register. GDB loses track of unavailable registers too
6497 easily. Some day, this may be an error. We don't have
6498 any way to read the register, either... */
6499 if (!reg
->in_g_packet
)
6502 store_registers_using_G (regcache
);
6506 store_registers_using_G (regcache
);
6508 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6509 if (!rsa
->regs
[i
].in_g_packet
)
6510 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6511 /* See above for why we do not issue an error here. */
6516 /* Return the number of hex digits in num. */
6519 hexnumlen (ULONGEST num
)
6523 for (i
= 0; num
!= 0; i
++)
6529 /* Set BUF to the minimum number of hex digits representing NUM. */
6532 hexnumstr (char *buf
, ULONGEST num
)
6534 int len
= hexnumlen (num
);
6536 return hexnumnstr (buf
, num
, len
);
6540 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6543 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6549 for (i
= width
- 1; i
>= 0; i
--)
6551 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6558 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6561 remote_address_masked (CORE_ADDR addr
)
6563 unsigned int address_size
= remote_address_size
;
6565 /* If "remoteaddresssize" was not set, default to target address size. */
6567 address_size
= gdbarch_addr_bit (target_gdbarch ());
6569 if (address_size
> 0
6570 && address_size
< (sizeof (ULONGEST
) * 8))
6572 /* Only create a mask when that mask can safely be constructed
6573 in a ULONGEST variable. */
6576 mask
= (mask
<< address_size
) - 1;
6582 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
6583 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
6584 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
6585 (which may be more than *OUT_LEN due to escape characters). The
6586 total number of bytes in the output buffer will be at most
6590 remote_escape_output (const gdb_byte
*buffer
, int len
,
6591 gdb_byte
*out_buf
, int *out_len
,
6594 int input_index
, output_index
;
6597 for (input_index
= 0; input_index
< len
; input_index
++)
6599 gdb_byte b
= buffer
[input_index
];
6601 if (b
== '$' || b
== '#' || b
== '}')
6603 /* These must be escaped. */
6604 if (output_index
+ 2 > out_maxlen
)
6606 out_buf
[output_index
++] = '}';
6607 out_buf
[output_index
++] = b
^ 0x20;
6611 if (output_index
+ 1 > out_maxlen
)
6613 out_buf
[output_index
++] = b
;
6617 *out_len
= input_index
;
6618 return output_index
;
6621 /* Convert BUFFER, escaped data LEN bytes long, into binary data
6622 in OUT_BUF. Return the number of bytes written to OUT_BUF.
6623 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
6625 This function reverses remote_escape_output. It allows more
6626 escaped characters than that function does, in particular because
6627 '*' must be escaped to avoid the run-length encoding processing
6628 in reading packets. */
6631 remote_unescape_input (const gdb_byte
*buffer
, int len
,
6632 gdb_byte
*out_buf
, int out_maxlen
)
6634 int input_index
, output_index
;
6639 for (input_index
= 0; input_index
< len
; input_index
++)
6641 gdb_byte b
= buffer
[input_index
];
6643 if (output_index
+ 1 > out_maxlen
)
6645 warning (_("Received too much data from remote target;"
6646 " ignoring overflow."));
6647 return output_index
;
6652 out_buf
[output_index
++] = b
^ 0x20;
6658 out_buf
[output_index
++] = b
;
6662 error (_("Unmatched escape character in target response."));
6664 return output_index
;
6667 /* Determine whether the remote target supports binary downloading.
6668 This is accomplished by sending a no-op memory write of zero length
6669 to the target at the specified address. It does not suffice to send
6670 the whole packet, since many stubs strip the eighth bit and
6671 subsequently compute a wrong checksum, which causes real havoc with
6674 NOTE: This can still lose if the serial line is not eight-bit
6675 clean. In cases like this, the user should clear "remote
6679 check_binary_download (CORE_ADDR addr
)
6681 struct remote_state
*rs
= get_remote_state ();
6683 switch (remote_protocol_packets
[PACKET_X
].support
)
6685 case PACKET_DISABLE
:
6689 case PACKET_SUPPORT_UNKNOWN
:
6695 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6697 p
+= hexnumstr (p
, (ULONGEST
) 0);
6701 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6702 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6704 if (rs
->buf
[0] == '\0')
6707 fprintf_unfiltered (gdb_stdlog
,
6708 "binary downloading NOT "
6709 "supported by target\n");
6710 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6715 fprintf_unfiltered (gdb_stdlog
,
6716 "binary downloading supported by target\n");
6717 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6724 /* Write memory data directly to the remote machine.
6725 This does not inform the data cache; the data cache uses this.
6726 HEADER is the starting part of the packet.
6727 MEMADDR is the address in the remote memory space.
6728 MYADDR is the address of the buffer in our space.
6729 LEN is the number of bytes.
6730 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6731 should send data as binary ('X'), or hex-encoded ('M').
6733 The function creates packet of the form
6734 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6736 where encoding of <DATA> is termined by PACKET_FORMAT.
6738 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6741 Returns the number of bytes transferred, or 0 (setting errno) for
6742 error. Only transfer a single packet. */
6745 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6746 const gdb_byte
*myaddr
, ssize_t len
,
6747 char packet_format
, int use_length
)
6749 struct remote_state
*rs
= get_remote_state ();
6759 if (packet_format
!= 'X' && packet_format
!= 'M')
6760 internal_error (__FILE__
, __LINE__
,
6761 _("remote_write_bytes_aux: bad packet format"));
6766 payload_size
= get_memory_write_packet_size ();
6768 /* The packet buffer will be large enough for the payload;
6769 get_memory_packet_size ensures this. */
6772 /* Compute the size of the actual payload by subtracting out the
6773 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6775 payload_size
-= strlen ("$,:#NN");
6777 /* The comma won't be used. */
6779 header_length
= strlen (header
);
6780 payload_size
-= header_length
;
6781 payload_size
-= hexnumlen (memaddr
);
6783 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6785 strcat (rs
->buf
, header
);
6786 p
= rs
->buf
+ strlen (header
);
6788 /* Compute a best guess of the number of bytes actually transfered. */
6789 if (packet_format
== 'X')
6791 /* Best guess at number of bytes that will fit. */
6792 todo
= min (len
, payload_size
);
6794 payload_size
-= hexnumlen (todo
);
6795 todo
= min (todo
, payload_size
);
6799 /* Num bytes that will fit. */
6800 todo
= min (len
, payload_size
/ 2);
6802 payload_size
-= hexnumlen (todo
);
6803 todo
= min (todo
, payload_size
/ 2);
6807 internal_error (__FILE__
, __LINE__
,
6808 _("minimum packet size too small to write data"));
6810 /* If we already need another packet, then try to align the end
6811 of this packet to a useful boundary. */
6812 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6813 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6815 /* Append "<memaddr>". */
6816 memaddr
= remote_address_masked (memaddr
);
6817 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6824 /* Append <len>. Retain the location/size of <len>. It may need to
6825 be adjusted once the packet body has been created. */
6827 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6835 /* Append the packet body. */
6836 if (packet_format
== 'X')
6838 /* Binary mode. Send target system values byte by byte, in
6839 increasing byte addresses. Only escape certain critical
6841 payload_length
= remote_escape_output (myaddr
, todo
, (gdb_byte
*) p
,
6842 &nr_bytes
, payload_size
);
6844 /* If not all TODO bytes fit, then we'll need another packet. Make
6845 a second try to keep the end of the packet aligned. Don't do
6846 this if the packet is tiny. */
6847 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6851 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6853 if (new_nr_bytes
!= nr_bytes
)
6854 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6855 (gdb_byte
*) p
, &nr_bytes
,
6859 p
+= payload_length
;
6860 if (use_length
&& nr_bytes
< todo
)
6862 /* Escape chars have filled up the buffer prematurely,
6863 and we have actually sent fewer bytes than planned.
6864 Fix-up the length field of the packet. Use the same
6865 number of characters as before. */
6866 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6867 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6872 /* Normal mode: Send target system values byte by byte, in
6873 increasing byte addresses. Each byte is encoded as a two hex
6875 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6879 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6880 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6882 if (rs
->buf
[0] == 'E')
6884 /* There is no correspondance between what the remote protocol
6885 uses for errors and errno codes. We would like a cleaner way
6886 of representing errors (big enough to include errno codes,
6887 bfd_error codes, and others). But for now just return EIO. */
6892 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6893 fewer bytes than we'd planned. */
6897 /* Write memory data directly to the remote machine.
6898 This does not inform the data cache; the data cache uses this.
6899 MEMADDR is the address in the remote memory space.
6900 MYADDR is the address of the buffer in our space.
6901 LEN is the number of bytes.
6903 Returns number of bytes transferred, or 0 (setting errno) for
6904 error. Only transfer a single packet. */
6907 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
6909 char *packet_format
= 0;
6911 /* Check whether the target supports binary download. */
6912 check_binary_download (memaddr
);
6914 switch (remote_protocol_packets
[PACKET_X
].support
)
6917 packet_format
= "X";
6919 case PACKET_DISABLE
:
6920 packet_format
= "M";
6922 case PACKET_SUPPORT_UNKNOWN
:
6923 internal_error (__FILE__
, __LINE__
,
6924 _("remote_write_bytes: bad internal state"));
6926 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6929 return remote_write_bytes_aux (packet_format
,
6930 memaddr
, myaddr
, len
, packet_format
[0], 1);
6933 /* Read memory data directly from the remote machine.
6934 This does not use the data cache; the data cache uses this.
6935 MEMADDR is the address in the remote memory space.
6936 MYADDR is the address of the buffer in our space.
6937 LEN is the number of bytes.
6939 Returns number of bytes transferred, or 0 for error. */
6942 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6944 struct remote_state
*rs
= get_remote_state ();
6945 int max_buf_size
; /* Max size of packet output buffer. */
6953 max_buf_size
= get_memory_read_packet_size ();
6954 /* The packet buffer will be large enough for the payload;
6955 get_memory_packet_size ensures this. */
6957 /* Number if bytes that will fit. */
6958 todo
= min (len
, max_buf_size
/ 2);
6960 /* Construct "m"<memaddr>","<len>". */
6961 memaddr
= remote_address_masked (memaddr
);
6964 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6966 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6969 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6970 if (rs
->buf
[0] == 'E'
6971 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6972 && rs
->buf
[3] == '\0')
6974 /* There is no correspondance between what the remote protocol
6975 uses for errors and errno codes. We would like a cleaner way
6976 of representing errors (big enough to include errno codes,
6977 bfd_error codes, and others). But for now just return
6982 /* Reply describes memory byte by byte, each byte encoded as two hex
6985 i
= hex2bin (p
, myaddr
, todo
);
6986 /* Return what we have. Let higher layers handle partial reads. */
6991 /* Read or write LEN bytes from inferior memory at MEMADDR,
6992 transferring to or from debugger address BUFFER. Write to inferior
6993 if SHOULD_WRITE is nonzero. Returns length of data written or
6994 read; 0 for error. TARGET is unused. */
6997 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6998 int should_write
, struct mem_attrib
*attrib
,
6999 struct target_ops
*target
)
7003 set_remote_traceframe ();
7004 set_general_thread (inferior_ptid
);
7007 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
7009 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
7014 /* Sends a packet with content determined by the printf format string
7015 FORMAT and the remaining arguments, then gets the reply. Returns
7016 whether the packet was a success, a failure, or unknown. */
7018 static enum packet_result
7019 remote_send_printf (const char *format
, ...)
7021 struct remote_state
*rs
= get_remote_state ();
7022 int max_size
= get_remote_packet_size ();
7025 va_start (ap
, format
);
7028 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
7029 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
7031 if (putpkt (rs
->buf
) < 0)
7032 error (_("Communication problem with target."));
7035 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7037 return packet_check_result (rs
->buf
);
7041 restore_remote_timeout (void *p
)
7043 int value
= *(int *)p
;
7045 remote_timeout
= value
;
7048 /* Flash writing can take quite some time. We'll set
7049 effectively infinite timeout for flash operations.
7050 In future, we'll need to decide on a better approach. */
7051 static const int remote_flash_timeout
= 1000;
7054 remote_flash_erase (struct target_ops
*ops
,
7055 ULONGEST address
, LONGEST length
)
7057 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
7058 int saved_remote_timeout
= remote_timeout
;
7059 enum packet_result ret
;
7060 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7061 &saved_remote_timeout
);
7063 remote_timeout
= remote_flash_timeout
;
7065 ret
= remote_send_printf ("vFlashErase:%s,%s",
7066 phex (address
, addr_size
),
7070 case PACKET_UNKNOWN
:
7071 error (_("Remote target does not support flash erase"));
7073 error (_("Error erasing flash with vFlashErase packet"));
7078 do_cleanups (back_to
);
7082 remote_flash_write (struct target_ops
*ops
,
7083 ULONGEST address
, LONGEST length
,
7084 const gdb_byte
*data
)
7086 int saved_remote_timeout
= remote_timeout
;
7088 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7089 &saved_remote_timeout
);
7091 remote_timeout
= remote_flash_timeout
;
7092 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
7093 do_cleanups (back_to
);
7099 remote_flash_done (struct target_ops
*ops
)
7101 int saved_remote_timeout
= remote_timeout
;
7103 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7104 &saved_remote_timeout
);
7106 remote_timeout
= remote_flash_timeout
;
7107 ret
= remote_send_printf ("vFlashDone");
7108 do_cleanups (back_to
);
7112 case PACKET_UNKNOWN
:
7113 error (_("Remote target does not support vFlashDone"));
7115 error (_("Error finishing flash operation"));
7122 remote_files_info (struct target_ops
*ignore
)
7124 puts_filtered ("Debugging a target over a serial line.\n");
7127 /* Stuff for dealing with the packets which are part of this protocol.
7128 See comment at top of file for details. */
7130 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
7131 error to higher layers. Called when a serial error is detected.
7132 The exception message is STRING, followed by a colon and a blank,
7133 the system error message for errno at function entry and final dot
7134 for output compatibility with throw_perror_with_name. */
7137 unpush_and_perror (const char *string
)
7139 int saved_errno
= errno
;
7141 remote_unpush_target ();
7142 throw_error (TARGET_CLOSE_ERROR
, "%s: %s.", string
,
7143 safe_strerror (saved_errno
));
7146 /* Read a single character from the remote end. */
7149 readchar (int timeout
)
7152 struct remote_state
*rs
= get_remote_state ();
7154 ch
= serial_readchar (rs
->remote_desc
, timeout
);
7159 switch ((enum serial_rc
) ch
)
7162 remote_unpush_target ();
7163 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
7166 unpush_and_perror (_("Remote communication error. "
7167 "Target disconnected."));
7169 case SERIAL_TIMEOUT
:
7175 /* Wrapper for serial_write that closes the target and throws if
7179 remote_serial_write (const char *str
, int len
)
7181 struct remote_state
*rs
= get_remote_state ();
7183 if (serial_write (rs
->remote_desc
, str
, len
))
7185 unpush_and_perror (_("Remote communication error. "
7186 "Target disconnected."));
7190 /* Send the command in *BUF to the remote machine, and read the reply
7191 into *BUF. Report an error if we get an error reply. Resize
7192 *BUF using xrealloc if necessary to hold the result, and update
7196 remote_send (char **buf
,
7200 getpkt (buf
, sizeof_buf
, 0);
7202 if ((*buf
)[0] == 'E')
7203 error (_("Remote failure reply: %s"), *buf
);
7206 /* Return a pointer to an xmalloc'ed string representing an escaped
7207 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
7208 etc. The caller is responsible for releasing the returned
7212 escape_buffer (const char *buf
, int n
)
7214 struct cleanup
*old_chain
;
7215 struct ui_file
*stb
;
7218 stb
= mem_fileopen ();
7219 old_chain
= make_cleanup_ui_file_delete (stb
);
7221 fputstrn_unfiltered (buf
, n
, 0, stb
);
7222 str
= ui_file_xstrdup (stb
, NULL
);
7223 do_cleanups (old_chain
);
7227 /* Display a null-terminated packet on stdout, for debugging, using C
7231 print_packet (char *buf
)
7233 puts_filtered ("\"");
7234 fputstr_filtered (buf
, '"', gdb_stdout
);
7235 puts_filtered ("\"");
7241 return putpkt_binary (buf
, strlen (buf
));
7244 /* Send a packet to the remote machine, with error checking. The data
7245 of the packet is in BUF. The string in BUF can be at most
7246 get_remote_packet_size () - 5 to account for the $, # and checksum,
7247 and for a possible /0 if we are debugging (remote_debug) and want
7248 to print the sent packet as a string. */
7251 putpkt_binary (char *buf
, int cnt
)
7253 struct remote_state
*rs
= get_remote_state ();
7255 unsigned char csum
= 0;
7256 char *buf2
= alloca (cnt
+ 6);
7263 /* Catch cases like trying to read memory or listing threads while
7264 we're waiting for a stop reply. The remote server wouldn't be
7265 ready to handle this request, so we'd hang and timeout. We don't
7266 have to worry about this in synchronous mode, because in that
7267 case it's not possible to issue a command while the target is
7268 running. This is not a problem in non-stop mode, because in that
7269 case, the stub is always ready to process serial input. */
7270 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
7271 error (_("Cannot execute this command while the target is running."));
7273 /* We're sending out a new packet. Make sure we don't look at a
7274 stale cached response. */
7275 rs
->cached_wait_status
= 0;
7277 /* Copy the packet into buffer BUF2, encapsulating it
7278 and giving it a checksum. */
7283 for (i
= 0; i
< cnt
; i
++)
7289 *p
++ = tohex ((csum
>> 4) & 0xf);
7290 *p
++ = tohex (csum
& 0xf);
7292 /* Send it over and over until we get a positive ack. */
7296 int started_error_output
= 0;
7300 struct cleanup
*old_chain
;
7304 str
= escape_buffer (buf2
, p
- buf2
);
7305 old_chain
= make_cleanup (xfree
, str
);
7306 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7307 gdb_flush (gdb_stdlog
);
7308 do_cleanups (old_chain
);
7310 remote_serial_write (buf2
, p
- buf2
);
7312 /* If this is a no acks version of the remote protocol, send the
7313 packet and move on. */
7317 /* Read until either a timeout occurs (-2) or '+' is read.
7318 Handle any notification that arrives in the mean time. */
7321 ch
= readchar (remote_timeout
);
7329 case SERIAL_TIMEOUT
:
7332 if (started_error_output
)
7334 putchar_unfiltered ('\n');
7335 started_error_output
= 0;
7344 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7348 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7350 case SERIAL_TIMEOUT
:
7354 break; /* Retransmit buffer. */
7358 fprintf_unfiltered (gdb_stdlog
,
7359 "Packet instead of Ack, ignoring it\n");
7360 /* It's probably an old response sent because an ACK
7361 was lost. Gobble up the packet and ack it so it
7362 doesn't get retransmitted when we resend this
7365 remote_serial_write ("+", 1);
7366 continue; /* Now, go look for +. */
7373 /* If we got a notification, handle it, and go back to looking
7375 /* We've found the start of a notification. Now
7376 collect the data. */
7377 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7382 struct cleanup
*old_chain
;
7385 str
= escape_buffer (rs
->buf
, val
);
7386 old_chain
= make_cleanup (xfree
, str
);
7387 fprintf_unfiltered (gdb_stdlog
,
7388 " Notification received: %s\n",
7390 do_cleanups (old_chain
);
7392 handle_notification (rs
->buf
);
7393 /* We're in sync now, rewait for the ack. */
7400 if (!started_error_output
)
7402 started_error_output
= 1;
7403 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7405 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7406 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7415 if (!started_error_output
)
7417 started_error_output
= 1;
7418 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7420 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7424 break; /* Here to retransmit. */
7428 /* This is wrong. If doing a long backtrace, the user should be
7429 able to get out next time we call QUIT, without anything as
7430 violent as interrupt_query. If we want to provide a way out of
7431 here without getting to the next QUIT, it should be based on
7432 hitting ^C twice as in remote_wait. */
7443 /* Come here after finding the start of a frame when we expected an
7444 ack. Do our best to discard the rest of this packet. */
7453 c
= readchar (remote_timeout
);
7456 case SERIAL_TIMEOUT
:
7457 /* Nothing we can do. */
7460 /* Discard the two bytes of checksum and stop. */
7461 c
= readchar (remote_timeout
);
7463 c
= readchar (remote_timeout
);
7466 case '*': /* Run length encoding. */
7467 /* Discard the repeat count. */
7468 c
= readchar (remote_timeout
);
7473 /* A regular character. */
7479 /* Come here after finding the start of the frame. Collect the rest
7480 into *BUF, verifying the checksum, length, and handling run-length
7481 compression. NUL terminate the buffer. If there is not enough room,
7482 expand *BUF using xrealloc.
7484 Returns -1 on error, number of characters in buffer (ignoring the
7485 trailing NULL) on success. (could be extended to return one of the
7486 SERIAL status indications). */
7489 read_frame (char **buf_p
,
7496 struct remote_state
*rs
= get_remote_state ();
7503 c
= readchar (remote_timeout
);
7506 case SERIAL_TIMEOUT
:
7508 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7512 fputs_filtered ("Saw new packet start in middle of old one\n",
7514 return -1; /* Start a new packet, count retries. */
7517 unsigned char pktcsum
;
7523 check_0
= readchar (remote_timeout
);
7525 check_1
= readchar (remote_timeout
);
7527 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7530 fputs_filtered ("Timeout in checksum, retrying\n",
7534 else if (check_0
< 0 || check_1
< 0)
7537 fputs_filtered ("Communication error in checksum\n",
7542 /* Don't recompute the checksum; with no ack packets we
7543 don't have any way to indicate a packet retransmission
7548 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7549 if (csum
== pktcsum
)
7554 struct cleanup
*old_chain
;
7557 str
= escape_buffer (buf
, bc
);
7558 old_chain
= make_cleanup (xfree
, str
);
7559 fprintf_unfiltered (gdb_stdlog
,
7560 "Bad checksum, sentsum=0x%x, "
7561 "csum=0x%x, buf=%s\n",
7562 pktcsum
, csum
, str
);
7563 do_cleanups (old_chain
);
7565 /* Number of characters in buffer ignoring trailing
7569 case '*': /* Run length encoding. */
7574 c
= readchar (remote_timeout
);
7576 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7578 /* The character before ``*'' is repeated. */
7580 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7582 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7584 /* Make some more room in the buffer. */
7585 *sizeof_buf
+= repeat
;
7586 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7590 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7596 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7600 if (bc
>= *sizeof_buf
- 1)
7602 /* Make some more room in the buffer. */
7604 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7615 /* Read a packet from the remote machine, with error checking, and
7616 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7617 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7618 rather than timing out; this is used (in synchronous mode) to wait
7619 for a target that is is executing user code to stop. */
7620 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7621 don't have to change all the calls to getpkt to deal with the
7622 return value, because at the moment I don't know what the right
7623 thing to do it for those. */
7631 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7635 /* Read a packet from the remote machine, with error checking, and
7636 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7637 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7638 rather than timing out; this is used (in synchronous mode) to wait
7639 for a target that is is executing user code to stop. If FOREVER ==
7640 0, this function is allowed to time out gracefully and return an
7641 indication of this to the caller. Otherwise return the number of
7642 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7643 enough reason to return to the caller. *IS_NOTIF is an output
7644 boolean that indicates whether *BUF holds a notification or not
7645 (a regular packet). */
7648 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7649 int expecting_notif
, int *is_notif
)
7651 struct remote_state
*rs
= get_remote_state ();
7657 /* We're reading a new response. Make sure we don't look at a
7658 previously cached response. */
7659 rs
->cached_wait_status
= 0;
7661 strcpy (*buf
, "timeout");
7664 timeout
= watchdog
> 0 ? watchdog
: -1;
7665 else if (expecting_notif
)
7666 timeout
= 0; /* There should already be a char in the buffer. If
7669 timeout
= remote_timeout
;
7673 /* Process any number of notifications, and then return when
7677 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
7679 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7681 /* This can loop forever if the remote side sends us
7682 characters continuously, but if it pauses, we'll get
7683 SERIAL_TIMEOUT from readchar because of timeout. Then
7684 we'll count that as a retry.
7686 Note that even when forever is set, we will only wait
7687 forever prior to the start of a packet. After that, we
7688 expect characters to arrive at a brisk pace. They should
7689 show up within remote_timeout intervals. */
7691 c
= readchar (timeout
);
7692 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7694 if (c
== SERIAL_TIMEOUT
)
7696 if (expecting_notif
)
7697 return -1; /* Don't complain, it's normal to not get
7698 anything in this case. */
7700 if (forever
) /* Watchdog went off? Kill the target. */
7703 remote_unpush_target ();
7704 throw_error (TARGET_CLOSE_ERROR
,
7705 _("Watchdog timeout has expired. "
7706 "Target detached."));
7709 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7713 /* We've found the start of a packet or notification.
7714 Now collect the data. */
7715 val
= read_frame (buf
, sizeof_buf
);
7720 remote_serial_write ("-", 1);
7723 if (tries
> MAX_TRIES
)
7725 /* We have tried hard enough, and just can't receive the
7726 packet/notification. Give up. */
7727 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7729 /* Skip the ack char if we're in no-ack mode. */
7730 if (!rs
->noack_mode
)
7731 remote_serial_write ("+", 1);
7735 /* If we got an ordinary packet, return that to our caller. */
7740 struct cleanup
*old_chain
;
7743 str
= escape_buffer (*buf
, val
);
7744 old_chain
= make_cleanup (xfree
, str
);
7745 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7746 do_cleanups (old_chain
);
7749 /* Skip the ack char if we're in no-ack mode. */
7750 if (!rs
->noack_mode
)
7751 remote_serial_write ("+", 1);
7752 if (is_notif
!= NULL
)
7757 /* If we got a notification, handle it, and go back to looking
7761 gdb_assert (c
== '%');
7765 struct cleanup
*old_chain
;
7768 str
= escape_buffer (*buf
, val
);
7769 old_chain
= make_cleanup (xfree
, str
);
7770 fprintf_unfiltered (gdb_stdlog
,
7771 " Notification received: %s\n",
7773 do_cleanups (old_chain
);
7775 if (is_notif
!= NULL
)
7778 handle_notification (*buf
);
7780 /* Notifications require no acknowledgement. */
7782 if (expecting_notif
)
7789 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7791 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
7795 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
7798 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
7803 /* A helper function that just calls putpkt; for type correctness. */
7806 putpkt_for_catch_errors (void *arg
)
7808 return putpkt (arg
);
7812 remote_kill (struct target_ops
*ops
)
7814 /* Use catch_errors so the user can quit from gdb even when we
7815 aren't on speaking terms with the remote system. */
7816 catch_errors (putpkt_for_catch_errors
, "k", "", RETURN_MASK_ERROR
);
7818 /* Don't wait for it to die. I'm not really sure it matters whether
7819 we do or not. For the existing stubs, kill is a noop. */
7820 target_mourn_inferior ();
7824 remote_vkill (int pid
, struct remote_state
*rs
)
7826 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7829 /* Tell the remote target to detach. */
7830 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7832 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7834 if (packet_ok (rs
->buf
,
7835 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7837 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7844 extended_remote_kill (struct target_ops
*ops
)
7847 int pid
= ptid_get_pid (inferior_ptid
);
7848 struct remote_state
*rs
= get_remote_state ();
7850 res
= remote_vkill (pid
, rs
);
7851 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7853 /* Don't try 'k' on a multi-process aware stub -- it has no way
7854 to specify the pid. */
7858 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7859 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7862 /* Don't wait for it to die. I'm not really sure it matters whether
7863 we do or not. For the existing stubs, kill is a noop. */
7869 error (_("Can't kill process"));
7871 target_mourn_inferior ();
7875 remote_mourn (struct target_ops
*ops
)
7877 remote_mourn_1 (ops
);
7880 /* Worker function for remote_mourn. */
7882 remote_mourn_1 (struct target_ops
*target
)
7884 unpush_target (target
);
7886 /* remote_close takes care of doing most of the clean up. */
7887 generic_mourn_inferior ();
7891 extended_remote_mourn_1 (struct target_ops
*target
)
7893 struct remote_state
*rs
= get_remote_state ();
7895 /* In case we got here due to an error, but we're going to stay
7897 rs
->waiting_for_stop_reply
= 0;
7899 /* If the current general thread belonged to the process we just
7900 detached from or has exited, the remote side current general
7901 thread becomes undefined. Considering a case like this:
7903 - We just got here due to a detach.
7904 - The process that we're detaching from happens to immediately
7905 report a global breakpoint being hit in non-stop mode, in the
7906 same thread we had selected before.
7907 - GDB attaches to this process again.
7908 - This event happens to be the next event we handle.
7910 GDB would consider that the current general thread didn't need to
7911 be set on the stub side (with Hg), since for all it knew,
7912 GENERAL_THREAD hadn't changed.
7914 Notice that although in all-stop mode, the remote server always
7915 sets the current thread to the thread reporting the stop event,
7916 that doesn't happen in non-stop mode; in non-stop, the stub *must
7917 not* change the current thread when reporting a breakpoint hit,
7918 due to the decoupling of event reporting and event handling.
7920 To keep things simple, we always invalidate our notion of the
7922 record_currthread (rs
, minus_one_ptid
);
7924 /* Unlike "target remote", we do not want to unpush the target; then
7925 the next time the user says "run", we won't be connected. */
7927 /* Call common code to mark the inferior as not running. */
7928 generic_mourn_inferior ();
7930 if (!have_inferiors ())
7932 if (!remote_multi_process_p (rs
))
7934 /* Check whether the target is running now - some remote stubs
7935 automatically restart after kill. */
7937 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7939 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7941 /* Assume that the target has been restarted. Set
7942 inferior_ptid so that bits of core GDB realizes
7943 there's something here, e.g., so that the user can
7944 say "kill" again. */
7945 inferior_ptid
= magic_null_ptid
;
7952 extended_remote_mourn (struct target_ops
*ops
)
7954 extended_remote_mourn_1 (ops
);
7958 extended_remote_supports_disable_randomization (void)
7960 return (remote_protocol_packets
[PACKET_QDisableRandomization
].support
7965 extended_remote_disable_randomization (int val
)
7967 struct remote_state
*rs
= get_remote_state ();
7970 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
7973 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7975 error (_("Target does not support QDisableRandomization."));
7976 if (strcmp (reply
, "OK") != 0)
7977 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7981 extended_remote_run (char *args
)
7983 struct remote_state
*rs
= get_remote_state ();
7986 /* If the user has disabled vRun support, or we have detected that
7987 support is not available, do not try it. */
7988 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7991 strcpy (rs
->buf
, "vRun;");
7992 len
= strlen (rs
->buf
);
7994 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7995 error (_("Remote file name too long for run packet"));
7996 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7998 gdb_assert (args
!= NULL
);
8001 struct cleanup
*back_to
;
8005 argv
= gdb_buildargv (args
);
8006 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
8007 for (i
= 0; argv
[i
] != NULL
; i
++)
8009 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
8010 error (_("Argument list too long for run packet"));
8011 rs
->buf
[len
++] = ';';
8012 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
8014 do_cleanups (back_to
);
8017 rs
->buf
[len
++] = '\0';
8020 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8022 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
8024 /* We have a wait response. All is well. */
8027 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
8028 /* It wasn't disabled before, but it is now. */
8032 if (remote_exec_file
[0] == '\0')
8033 error (_("Running the default executable on the remote target failed; "
8034 "try \"set remote exec-file\"?"));
8036 error (_("Running \"%s\" on the remote target failed"),
8041 /* In the extended protocol we want to be able to do things like
8042 "run" and have them basically work as expected. So we need
8043 a special create_inferior function. We support changing the
8044 executable file and the command line arguments, but not the
8048 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
8049 char **env
, int from_tty
)
8053 struct remote_state
*rs
= get_remote_state ();
8055 /* If running asynchronously, register the target file descriptor
8056 with the event loop. */
8057 if (target_can_async_p ())
8058 target_async (inferior_event_handler
, 0);
8060 /* Disable address space randomization if requested (and supported). */
8061 if (extended_remote_supports_disable_randomization ())
8062 extended_remote_disable_randomization (disable_randomization
);
8064 /* Now restart the remote server. */
8065 run_worked
= extended_remote_run (args
) != -1;
8068 /* vRun was not supported. Fail if we need it to do what the
8070 if (remote_exec_file
[0])
8071 error (_("Remote target does not support \"set remote exec-file\""));
8073 error (_("Remote target does not support \"set args\" or run <ARGS>"));
8075 /* Fall back to "R". */
8076 extended_remote_restart ();
8079 if (!have_inferiors ())
8081 /* Clean up from the last time we ran, before we mark the target
8082 running again. This will mark breakpoints uninserted, and
8083 get_offsets may insert breakpoints. */
8084 init_thread_list ();
8085 init_wait_for_inferior ();
8088 /* vRun's success return is a stop reply. */
8089 stop_reply
= run_worked
? rs
->buf
: NULL
;
8090 add_current_inferior_and_thread (stop_reply
);
8092 /* Get updated offsets, if the stub uses qOffsets. */
8097 extended_remote_create_inferior (struct target_ops
*ops
,
8098 char *exec_file
, char *args
,
8099 char **env
, int from_tty
)
8101 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
8105 /* Given a location's target info BP_TGT and the packet buffer BUF, output
8106 the list of conditions (in agent expression bytecode format), if any, the
8107 target needs to evaluate. The output is placed into the packet buffer
8108 started from BUF and ended at BUF_END. */
8111 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
8112 struct bp_target_info
*bp_tgt
, char *buf
,
8115 struct agent_expr
*aexpr
= NULL
;
8118 char *buf_start
= buf
;
8120 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
8123 buf
+= strlen (buf
);
8124 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
8127 /* Send conditions to the target and free the vector. */
8129 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
8132 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
8133 buf
+= strlen (buf
);
8134 for (i
= 0; i
< aexpr
->len
; ++i
)
8135 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8139 VEC_free (agent_expr_p
, bp_tgt
->conditions
);
8144 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
8145 struct bp_target_info
*bp_tgt
, char *buf
)
8147 struct agent_expr
*aexpr
= NULL
;
8150 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8153 buf
+= strlen (buf
);
8155 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
8156 buf
+= strlen (buf
);
8158 /* Concatenate all the agent expressions that are commands into the
8161 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
8164 sprintf (buf
, "X%x,", aexpr
->len
);
8165 buf
+= strlen (buf
);
8166 for (i
= 0; i
< aexpr
->len
; ++i
)
8167 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8171 VEC_free (agent_expr_p
, bp_tgt
->tcommands
);
8174 /* Insert a breakpoint. On targets that have software breakpoint
8175 support, we ask the remote target to do the work; on targets
8176 which don't, we insert a traditional memory breakpoint. */
8179 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
8180 struct bp_target_info
*bp_tgt
)
8182 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
8183 If it succeeds, then set the support to PACKET_ENABLE. If it
8184 fails, and the user has explicitly requested the Z support then
8185 report an error, otherwise, mark it disabled and go on. */
8187 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8189 CORE_ADDR addr
= bp_tgt
->placed_address
;
8190 struct remote_state
*rs
;
8193 struct condition_list
*cond
= NULL
;
8195 /* Make sure the remote is pointing at the right process, if
8197 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8198 set_general_process ();
8200 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
8202 rs
= get_remote_state ();
8204 endbuf
= rs
->buf
+ get_remote_packet_size ();
8209 addr
= (ULONGEST
) remote_address_masked (addr
);
8210 p
+= hexnumstr (p
, addr
);
8211 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
8213 if (remote_supports_cond_breakpoints ())
8214 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8216 if (remote_can_run_breakpoint_commands ())
8217 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8220 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8222 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
8227 bp_tgt
->placed_address
= addr
;
8228 bp_tgt
->placed_size
= bpsize
;
8230 case PACKET_UNKNOWN
:
8235 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
8239 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
8240 struct bp_target_info
*bp_tgt
)
8242 CORE_ADDR addr
= bp_tgt
->placed_address
;
8243 struct remote_state
*rs
= get_remote_state ();
8245 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8248 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8250 /* Make sure the remote is pointing at the right process, if
8252 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8253 set_general_process ();
8259 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8260 p
+= hexnumstr (p
, addr
);
8261 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8264 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8266 return (rs
->buf
[0] == 'E');
8269 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
8273 watchpoint_to_Z_packet (int type
)
8278 return Z_PACKET_WRITE_WP
;
8281 return Z_PACKET_READ_WP
;
8284 return Z_PACKET_ACCESS_WP
;
8287 internal_error (__FILE__
, __LINE__
,
8288 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8293 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
8294 struct expression
*cond
)
8296 struct remote_state
*rs
= get_remote_state ();
8297 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8299 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8301 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8304 /* Make sure the remote is pointing at the right process, if
8306 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8307 set_general_process ();
8309 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8310 p
= strchr (rs
->buf
, '\0');
8311 addr
= remote_address_masked (addr
);
8312 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8313 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8316 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8318 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8322 case PACKET_UNKNOWN
:
8327 internal_error (__FILE__
, __LINE__
,
8328 _("remote_insert_watchpoint: reached end of function"));
8332 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8333 CORE_ADDR start
, int length
)
8335 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8337 return diff
< length
;
8342 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
8343 struct expression
*cond
)
8345 struct remote_state
*rs
= get_remote_state ();
8346 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8348 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8350 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8353 /* Make sure the remote is pointing at the right process, if
8355 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8356 set_general_process ();
8358 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8359 p
= strchr (rs
->buf
, '\0');
8360 addr
= remote_address_masked (addr
);
8361 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8362 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8364 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8366 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8369 case PACKET_UNKNOWN
:
8374 internal_error (__FILE__
, __LINE__
,
8375 _("remote_remove_watchpoint: reached end of function"));
8379 int remote_hw_watchpoint_limit
= -1;
8380 int remote_hw_watchpoint_length_limit
= -1;
8381 int remote_hw_breakpoint_limit
= -1;
8384 remote_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
8386 if (remote_hw_watchpoint_length_limit
== 0)
8388 else if (remote_hw_watchpoint_length_limit
< 0)
8390 else if (len
<= remote_hw_watchpoint_length_limit
)
8397 remote_check_watch_resources (int type
, int cnt
, int ot
)
8399 if (type
== bp_hardware_breakpoint
)
8401 if (remote_hw_breakpoint_limit
== 0)
8403 else if (remote_hw_breakpoint_limit
< 0)
8405 else if (cnt
<= remote_hw_breakpoint_limit
)
8410 if (remote_hw_watchpoint_limit
== 0)
8412 else if (remote_hw_watchpoint_limit
< 0)
8416 else if (cnt
<= remote_hw_watchpoint_limit
)
8423 remote_stopped_by_watchpoint (void)
8425 return remote_stopped_by_watchpoint_p
;
8429 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8433 if (remote_stopped_by_watchpoint ())
8435 *addr_p
= remote_watch_data_address
;
8444 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
8445 struct bp_target_info
*bp_tgt
)
8448 struct remote_state
*rs
;
8452 /* The length field should be set to the size of a breakpoint
8453 instruction, even though we aren't inserting one ourselves. */
8455 gdbarch_remote_breakpoint_from_pc
8456 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
8458 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8461 /* Make sure the remote is pointing at the right process, if
8463 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8464 set_general_process ();
8466 rs
= get_remote_state ();
8468 endbuf
= rs
->buf
+ get_remote_packet_size ();
8474 addr
= remote_address_masked (bp_tgt
->placed_address
);
8475 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8476 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8478 if (remote_supports_cond_breakpoints ())
8479 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8481 if (remote_can_run_breakpoint_commands ())
8482 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8485 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8487 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8490 if (rs
->buf
[1] == '.')
8492 message
= strchr (rs
->buf
+ 2, '.');
8494 error (_("Remote failure reply: %s"), message
+ 1);
8497 case PACKET_UNKNOWN
:
8502 internal_error (__FILE__
, __LINE__
,
8503 _("remote_insert_hw_breakpoint: reached end of function"));
8508 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
8509 struct bp_target_info
*bp_tgt
)
8512 struct remote_state
*rs
= get_remote_state ();
8514 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8516 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8519 /* Make sure the remote is pointing at the right process, if
8521 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8522 set_general_process ();
8528 addr
= remote_address_masked (bp_tgt
->placed_address
);
8529 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8530 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8533 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8535 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8538 case PACKET_UNKNOWN
:
8543 internal_error (__FILE__
, __LINE__
,
8544 _("remote_remove_hw_breakpoint: reached end of function"));
8547 /* Verify memory using the "qCRC:" request. */
8550 remote_verify_memory (struct target_ops
*ops
,
8551 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8553 struct remote_state
*rs
= get_remote_state ();
8554 unsigned long host_crc
, target_crc
;
8557 /* Make sure the remote is pointing at the right process. */
8558 set_general_process ();
8560 /* FIXME: assumes lma can fit into long. */
8561 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8562 (long) lma
, (long) size
);
8565 /* Be clever; compute the host_crc before waiting for target
8567 host_crc
= xcrc32 (data
, size
, 0xffffffff);
8569 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8570 if (rs
->buf
[0] == 'E')
8573 if (rs
->buf
[0] != 'C')
8574 error (_("remote target does not support this operation"));
8576 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8577 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8579 return (host_crc
== target_crc
);
8582 /* compare-sections command
8584 With no arguments, compares each loadable section in the exec bfd
8585 with the same memory range on the target, and reports mismatches.
8586 Useful for verifying the image on the target against the exec file. */
8589 compare_sections_command (char *args
, int from_tty
)
8592 struct cleanup
*old_chain
;
8594 const char *sectname
;
8602 error (_("command cannot be used without an exec file"));
8604 /* Make sure the remote is pointing at the right process. */
8605 set_general_process ();
8607 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8609 if (!(s
->flags
& SEC_LOAD
))
8610 continue; /* Skip non-loadable section. */
8612 size
= bfd_get_section_size (s
);
8614 continue; /* Skip zero-length section. */
8616 sectname
= bfd_get_section_name (exec_bfd
, s
);
8617 if (args
&& strcmp (args
, sectname
) != 0)
8618 continue; /* Not the section selected by user. */
8620 matched
= 1; /* Do this section. */
8623 sectdata
= xmalloc (size
);
8624 old_chain
= make_cleanup (xfree
, sectdata
);
8625 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8627 res
= target_verify_memory (sectdata
, lma
, size
);
8630 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8631 paddress (target_gdbarch (), lma
),
8632 paddress (target_gdbarch (), lma
+ size
));
8634 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8635 paddress (target_gdbarch (), lma
),
8636 paddress (target_gdbarch (), lma
+ size
));
8638 printf_filtered ("matched.\n");
8641 printf_filtered ("MIS-MATCHED!\n");
8645 do_cleanups (old_chain
);
8648 warning (_("One or more sections of the remote executable does not match\n\
8649 the loaded file\n"));
8650 if (args
&& !matched
)
8651 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8654 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8655 into remote target. The number of bytes written to the remote
8656 target is returned, or -1 for error. */
8659 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8660 const char *annex
, const gdb_byte
*writebuf
,
8661 ULONGEST offset
, LONGEST len
,
8662 struct packet_config
*packet
)
8666 struct remote_state
*rs
= get_remote_state ();
8667 int max_size
= get_memory_write_packet_size ();
8669 if (packet
->support
== PACKET_DISABLE
)
8672 /* Insert header. */
8673 i
= snprintf (rs
->buf
, max_size
,
8674 "qXfer:%s:write:%s:%s:",
8675 object_name
, annex
? annex
: "",
8676 phex_nz (offset
, sizeof offset
));
8677 max_size
-= (i
+ 1);
8679 /* Escape as much data as fits into rs->buf. */
8680 buf_len
= remote_escape_output
8681 (writebuf
, len
, (gdb_byte
*) rs
->buf
+ i
, &max_size
, max_size
);
8683 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8684 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8685 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8688 unpack_varlen_hex (rs
->buf
, &n
);
8692 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8693 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8694 number of bytes read is returned, or 0 for EOF, or -1 for error.
8695 The number of bytes read may be less than LEN without indicating an
8696 EOF. PACKET is checked and updated to indicate whether the remote
8697 target supports this object. */
8700 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8702 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8703 struct packet_config
*packet
)
8705 struct remote_state
*rs
= get_remote_state ();
8706 LONGEST i
, n
, packet_len
;
8708 if (packet
->support
== PACKET_DISABLE
)
8711 /* Check whether we've cached an end-of-object packet that matches
8713 if (rs
->finished_object
)
8715 if (strcmp (object_name
, rs
->finished_object
) == 0
8716 && strcmp (annex
? annex
: "", rs
->finished_annex
) == 0
8717 && offset
== rs
->finished_offset
)
8720 /* Otherwise, we're now reading something different. Discard
8722 xfree (rs
->finished_object
);
8723 xfree (rs
->finished_annex
);
8724 rs
->finished_object
= NULL
;
8725 rs
->finished_annex
= NULL
;
8728 /* Request only enough to fit in a single packet. The actual data
8729 may not, since we don't know how much of it will need to be escaped;
8730 the target is free to respond with slightly less data. We subtract
8731 five to account for the response type and the protocol frame. */
8732 n
= min (get_remote_packet_size () - 5, len
);
8733 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8734 object_name
, annex
? annex
: "",
8735 phex_nz (offset
, sizeof offset
),
8736 phex_nz (n
, sizeof n
));
8737 i
= putpkt (rs
->buf
);
8742 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8743 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8746 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8747 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8749 /* 'm' means there is (or at least might be) more data after this
8750 batch. That does not make sense unless there's at least one byte
8751 of data in this reply. */
8752 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8753 error (_("Remote qXfer reply contained no data."));
8755 /* Got some data. */
8756 i
= remote_unescape_input ((gdb_byte
*) rs
->buf
+ 1,
8757 packet_len
- 1, readbuf
, n
);
8759 /* 'l' is an EOF marker, possibly including a final block of data,
8760 or possibly empty. If we have the final block of a non-empty
8761 object, record this fact to bypass a subsequent partial read. */
8762 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8764 rs
->finished_object
= xstrdup (object_name
);
8765 rs
->finished_annex
= xstrdup (annex
? annex
: "");
8766 rs
->finished_offset
= offset
+ i
;
8773 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8774 const char *annex
, gdb_byte
*readbuf
,
8775 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
8777 struct remote_state
*rs
;
8782 set_remote_traceframe ();
8783 set_general_thread (inferior_ptid
);
8785 rs
= get_remote_state ();
8787 /* Handle memory using the standard memory routines. */
8788 if (object
== TARGET_OBJECT_MEMORY
)
8794 /* If the remote target is connected but not running, we should
8795 pass this request down to a lower stratum (e.g. the executable
8797 if (!target_has_execution
)
8800 if (writebuf
!= NULL
)
8801 xfered
= remote_write_bytes (offset
, writebuf
, len
);
8803 xfered
= remote_read_bytes (offset
, readbuf
, len
);
8807 else if (xfered
== 0 && errno
== 0)
8813 /* Handle SPU memory using qxfer packets. */
8814 if (object
== TARGET_OBJECT_SPU
)
8817 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8818 &remote_protocol_packets
8819 [PACKET_qXfer_spu_read
]);
8821 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8822 &remote_protocol_packets
8823 [PACKET_qXfer_spu_write
]);
8826 /* Handle extra signal info using qxfer packets. */
8827 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8830 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8831 &remote_protocol_packets
8832 [PACKET_qXfer_siginfo_read
]);
8834 return remote_write_qxfer (ops
, "siginfo", annex
,
8835 writebuf
, offset
, len
,
8836 &remote_protocol_packets
8837 [PACKET_qXfer_siginfo_write
]);
8840 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8843 return remote_read_qxfer (ops
, "statictrace", annex
,
8844 readbuf
, offset
, len
,
8845 &remote_protocol_packets
8846 [PACKET_qXfer_statictrace_read
]);
8851 /* Only handle flash writes. */
8852 if (writebuf
!= NULL
)
8858 case TARGET_OBJECT_FLASH
:
8859 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
8863 else if (xfered
== 0 && errno
== 0)
8873 /* Map pre-existing objects onto letters. DO NOT do this for new
8874 objects!!! Instead specify new query packets. */
8877 case TARGET_OBJECT_AVR
:
8881 case TARGET_OBJECT_AUXV
:
8882 gdb_assert (annex
== NULL
);
8883 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8884 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8886 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8887 return remote_read_qxfer
8888 (ops
, "features", annex
, readbuf
, offset
, len
,
8889 &remote_protocol_packets
[PACKET_qXfer_features
]);
8891 case TARGET_OBJECT_LIBRARIES
:
8892 return remote_read_qxfer
8893 (ops
, "libraries", annex
, readbuf
, offset
, len
,
8894 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8896 case TARGET_OBJECT_LIBRARIES_SVR4
:
8897 return remote_read_qxfer
8898 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
,
8899 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8901 case TARGET_OBJECT_MEMORY_MAP
:
8902 gdb_assert (annex
== NULL
);
8903 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8904 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8906 case TARGET_OBJECT_OSDATA
:
8907 /* Should only get here if we're connected. */
8908 gdb_assert (rs
->remote_desc
);
8909 return remote_read_qxfer
8910 (ops
, "osdata", annex
, readbuf
, offset
, len
,
8911 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8913 case TARGET_OBJECT_THREADS
:
8914 gdb_assert (annex
== NULL
);
8915 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8916 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8918 case TARGET_OBJECT_TRACEFRAME_INFO
:
8919 gdb_assert (annex
== NULL
);
8920 return remote_read_qxfer
8921 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
,
8922 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8924 case TARGET_OBJECT_FDPIC
:
8925 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8926 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8928 case TARGET_OBJECT_OPENVMS_UIB
:
8929 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
8930 &remote_protocol_packets
[PACKET_qXfer_uib
]);
8932 case TARGET_OBJECT_BTRACE
:
8933 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
8934 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
8940 /* Note: a zero OFFSET and LEN can be used to query the minimum
8942 if (offset
== 0 && len
== 0)
8943 return (get_remote_packet_size ());
8944 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8945 large enough let the caller deal with it. */
8946 if (len
< get_remote_packet_size ())
8948 len
= get_remote_packet_size ();
8950 /* Except for querying the minimum buffer size, target must be open. */
8951 if (!rs
->remote_desc
)
8952 error (_("remote query is only available after target open"));
8954 gdb_assert (annex
!= NULL
);
8955 gdb_assert (readbuf
!= NULL
);
8961 /* We used one buffer char for the remote protocol q command and
8962 another for the query type. As the remote protocol encapsulation
8963 uses 4 chars plus one extra in case we are debugging
8964 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8967 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8969 /* Bad caller may have sent forbidden characters. */
8970 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8975 gdb_assert (annex
[i
] == '\0');
8977 i
= putpkt (rs
->buf
);
8981 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8982 strcpy ((char *) readbuf
, rs
->buf
);
8984 return strlen ((char *) readbuf
);
8988 remote_search_memory (struct target_ops
* ops
,
8989 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8990 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8991 CORE_ADDR
*found_addrp
)
8993 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
8994 struct remote_state
*rs
= get_remote_state ();
8995 int max_size
= get_memory_write_packet_size ();
8996 struct packet_config
*packet
=
8997 &remote_protocol_packets
[PACKET_qSearch_memory
];
8998 /* Number of packet bytes used to encode the pattern;
8999 this could be more than PATTERN_LEN due to escape characters. */
9000 int escaped_pattern_len
;
9001 /* Amount of pattern that was encodable in the packet. */
9002 int used_pattern_len
;
9005 ULONGEST found_addr
;
9007 /* Don't go to the target if we don't have to.
9008 This is done before checking packet->support to avoid the possibility that
9009 a success for this edge case means the facility works in general. */
9010 if (pattern_len
> search_space_len
)
9012 if (pattern_len
== 0)
9014 *found_addrp
= start_addr
;
9018 /* If we already know the packet isn't supported, fall back to the simple
9019 way of searching memory. */
9021 if (packet
->support
== PACKET_DISABLE
)
9023 /* Target doesn't provided special support, fall back and use the
9024 standard support (copy memory and do the search here). */
9025 return simple_search_memory (ops
, start_addr
, search_space_len
,
9026 pattern
, pattern_len
, found_addrp
);
9029 /* Make sure the remote is pointing at the right process. */
9030 set_general_process ();
9032 /* Insert header. */
9033 i
= snprintf (rs
->buf
, max_size
,
9034 "qSearch:memory:%s;%s;",
9035 phex_nz (start_addr
, addr_size
),
9036 phex_nz (search_space_len
, sizeof (search_space_len
)));
9037 max_size
-= (i
+ 1);
9039 /* Escape as much data as fits into rs->buf. */
9040 escaped_pattern_len
=
9041 remote_escape_output (pattern
, pattern_len
, (gdb_byte
*) rs
->buf
+ i
,
9042 &used_pattern_len
, max_size
);
9044 /* Bail if the pattern is too large. */
9045 if (used_pattern_len
!= pattern_len
)
9046 error (_("Pattern is too large to transmit to remote target."));
9048 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
9049 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
9050 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9052 /* The request may not have worked because the command is not
9053 supported. If so, fall back to the simple way. */
9054 if (packet
->support
== PACKET_DISABLE
)
9056 return simple_search_memory (ops
, start_addr
, search_space_len
,
9057 pattern
, pattern_len
, found_addrp
);
9062 if (rs
->buf
[0] == '0')
9064 else if (rs
->buf
[0] == '1')
9067 if (rs
->buf
[1] != ',')
9068 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
9069 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
9070 *found_addrp
= found_addr
;
9073 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
9079 remote_rcmd (char *command
,
9080 struct ui_file
*outbuf
)
9082 struct remote_state
*rs
= get_remote_state ();
9085 if (!rs
->remote_desc
)
9086 error (_("remote rcmd is only available after target open"));
9088 /* Send a NULL command across as an empty command. */
9089 if (command
== NULL
)
9092 /* The query prefix. */
9093 strcpy (rs
->buf
, "qRcmd,");
9094 p
= strchr (rs
->buf
, '\0');
9096 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
9097 > get_remote_packet_size ())
9098 error (_("\"monitor\" command ``%s'' is too long."), command
);
9100 /* Encode the actual command. */
9101 bin2hex ((gdb_byte
*) command
, p
, 0);
9103 if (putpkt (rs
->buf
) < 0)
9104 error (_("Communication problem with target."));
9106 /* get/display the response */
9111 /* XXX - see also remote_get_noisy_reply(). */
9112 QUIT
; /* Allow user to bail out with ^C. */
9114 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
9116 /* Timeout. Continue to (try to) read responses.
9117 This is better than stopping with an error, assuming the stub
9118 is still executing the (long) monitor command.
9119 If needed, the user can interrupt gdb using C-c, obtaining
9120 an effect similar to stop on timeout. */
9125 error (_("Target does not support this command."));
9126 if (buf
[0] == 'O' && buf
[1] != 'K')
9128 remote_console_output (buf
+ 1); /* 'O' message from stub. */
9131 if (strcmp (buf
, "OK") == 0)
9133 if (strlen (buf
) == 3 && buf
[0] == 'E'
9134 && isdigit (buf
[1]) && isdigit (buf
[2]))
9136 error (_("Protocol error with Rcmd"));
9138 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
9140 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
9142 fputc_unfiltered (c
, outbuf
);
9148 static VEC(mem_region_s
) *
9149 remote_memory_map (struct target_ops
*ops
)
9151 VEC(mem_region_s
) *result
= NULL
;
9152 char *text
= target_read_stralloc (¤t_target
,
9153 TARGET_OBJECT_MEMORY_MAP
, NULL
);
9157 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
9159 result
= parse_memory_map (text
);
9160 do_cleanups (back_to
);
9167 packet_command (char *args
, int from_tty
)
9169 struct remote_state
*rs
= get_remote_state ();
9171 if (!rs
->remote_desc
)
9172 error (_("command can only be used with remote target"));
9175 error (_("remote-packet command requires packet text as argument"));
9177 puts_filtered ("sending: ");
9178 print_packet (args
);
9179 puts_filtered ("\n");
9182 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9183 puts_filtered ("received: ");
9184 print_packet (rs
->buf
);
9185 puts_filtered ("\n");
9189 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
9191 static void display_thread_info (struct gdb_ext_thread_info
*info
);
9193 static void threadset_test_cmd (char *cmd
, int tty
);
9195 static void threadalive_test (char *cmd
, int tty
);
9197 static void threadlist_test_cmd (char *cmd
, int tty
);
9199 int get_and_display_threadinfo (threadref
*ref
);
9201 static void threadinfo_test_cmd (char *cmd
, int tty
);
9203 static int thread_display_step (threadref
*ref
, void *context
);
9205 static void threadlist_update_test_cmd (char *cmd
, int tty
);
9207 static void init_remote_threadtests (void);
9209 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
9212 threadset_test_cmd (char *cmd
, int tty
)
9214 int sample_thread
= SAMPLE_THREAD
;
9216 printf_filtered (_("Remote threadset test\n"));
9217 set_general_thread (sample_thread
);
9222 threadalive_test (char *cmd
, int tty
)
9224 int sample_thread
= SAMPLE_THREAD
;
9225 int pid
= ptid_get_pid (inferior_ptid
);
9226 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
9228 if (remote_thread_alive (ptid
))
9229 printf_filtered ("PASS: Thread alive test\n");
9231 printf_filtered ("FAIL: Thread alive test\n");
9234 void output_threadid (char *title
, threadref
*ref
);
9237 output_threadid (char *title
, threadref
*ref
)
9241 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
9243 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
9247 threadlist_test_cmd (char *cmd
, int tty
)
9250 threadref nextthread
;
9251 int done
, result_count
;
9252 threadref threadlist
[3];
9254 printf_filtered ("Remote Threadlist test\n");
9255 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
9256 &result_count
, &threadlist
[0]))
9257 printf_filtered ("FAIL: threadlist test\n");
9260 threadref
*scan
= threadlist
;
9261 threadref
*limit
= scan
+ result_count
;
9263 while (scan
< limit
)
9264 output_threadid (" thread ", scan
++);
9269 display_thread_info (struct gdb_ext_thread_info
*info
)
9271 output_threadid ("Threadid: ", &info
->threadid
);
9272 printf_filtered ("Name: %s\n ", info
->shortname
);
9273 printf_filtered ("State: %s\n", info
->display
);
9274 printf_filtered ("other: %s\n\n", info
->more_display
);
9278 get_and_display_threadinfo (threadref
*ref
)
9282 struct gdb_ext_thread_info threadinfo
;
9284 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9285 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9286 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9287 display_thread_info (&threadinfo
);
9292 threadinfo_test_cmd (char *cmd
, int tty
)
9294 int athread
= SAMPLE_THREAD
;
9298 int_to_threadref (&thread
, athread
);
9299 printf_filtered ("Remote Threadinfo test\n");
9300 if (!get_and_display_threadinfo (&thread
))
9301 printf_filtered ("FAIL cannot get thread info\n");
9305 thread_display_step (threadref
*ref
, void *context
)
9307 /* output_threadid(" threadstep ",ref); *//* simple test */
9308 return get_and_display_threadinfo (ref
);
9312 threadlist_update_test_cmd (char *cmd
, int tty
)
9314 printf_filtered ("Remote Threadlist update test\n");
9315 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9319 init_remote_threadtests (void)
9321 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9322 _("Fetch and print the remote list of "
9323 "thread identifiers, one pkt only"));
9324 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9325 _("Fetch and display info about one thread"));
9326 add_com ("tset", class_obscure
, threadset_test_cmd
,
9327 _("Test setting to a different thread"));
9328 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9329 _("Iterate through updating all remote thread info"));
9330 add_com ("talive", class_obscure
, threadalive_test
,
9331 _(" Remote thread alive test "));
9336 /* Convert a thread ID to a string. Returns the string in a static
9340 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9342 static char buf
[64];
9343 struct remote_state
*rs
= get_remote_state ();
9345 if (ptid_equal (ptid
, null_ptid
))
9346 return normal_pid_to_str (ptid
);
9347 else if (ptid_is_pid (ptid
))
9349 /* Printing an inferior target id. */
9351 /* When multi-process extensions are off, there's no way in the
9352 remote protocol to know the remote process id, if there's any
9353 at all. There's one exception --- when we're connected with
9354 target extended-remote, and we manually attached to a process
9355 with "attach PID". We don't record anywhere a flag that
9356 allows us to distinguish that case from the case of
9357 connecting with extended-remote and the stub already being
9358 attached to a process, and reporting yes to qAttached, hence
9359 no smart special casing here. */
9360 if (!remote_multi_process_p (rs
))
9362 xsnprintf (buf
, sizeof buf
, "Remote target");
9366 return normal_pid_to_str (ptid
);
9370 if (ptid_equal (magic_null_ptid
, ptid
))
9371 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9372 else if (rs
->extended
&& remote_multi_process_p (rs
))
9373 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9374 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
9376 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9377 ptid_get_tid (ptid
));
9382 /* Get the address of the thread local variable in OBJFILE which is
9383 stored at OFFSET within the thread local storage for thread PTID. */
9386 remote_get_thread_local_address (struct target_ops
*ops
,
9387 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9389 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
9391 struct remote_state
*rs
= get_remote_state ();
9393 char *endp
= rs
->buf
+ get_remote_packet_size ();
9394 enum packet_result result
;
9396 strcpy (p
, "qGetTLSAddr:");
9398 p
= write_ptid (p
, endp
, ptid
);
9400 p
+= hexnumstr (p
, offset
);
9402 p
+= hexnumstr (p
, lm
);
9406 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9407 result
= packet_ok (rs
->buf
,
9408 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9409 if (result
== PACKET_OK
)
9413 unpack_varlen_hex (rs
->buf
, &result
);
9416 else if (result
== PACKET_UNKNOWN
)
9417 throw_error (TLS_GENERIC_ERROR
,
9418 _("Remote target doesn't support qGetTLSAddr packet"));
9420 throw_error (TLS_GENERIC_ERROR
,
9421 _("Remote target failed to process qGetTLSAddr request"));
9424 throw_error (TLS_GENERIC_ERROR
,
9425 _("TLS not supported or disabled on this target"));
9430 /* Provide thread local base, i.e. Thread Information Block address.
9431 Returns 1 if ptid is found and thread_local_base is non zero. */
9434 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
9436 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
9438 struct remote_state
*rs
= get_remote_state ();
9440 char *endp
= rs
->buf
+ get_remote_packet_size ();
9441 enum packet_result result
;
9443 strcpy (p
, "qGetTIBAddr:");
9445 p
= write_ptid (p
, endp
, ptid
);
9449 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9450 result
= packet_ok (rs
->buf
,
9451 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9452 if (result
== PACKET_OK
)
9456 unpack_varlen_hex (rs
->buf
, &result
);
9458 *addr
= (CORE_ADDR
) result
;
9461 else if (result
== PACKET_UNKNOWN
)
9462 error (_("Remote target doesn't support qGetTIBAddr packet"));
9464 error (_("Remote target failed to process qGetTIBAddr request"));
9467 error (_("qGetTIBAddr not supported or disabled on this target"));
9472 /* Support for inferring a target description based on the current
9473 architecture and the size of a 'g' packet. While the 'g' packet
9474 can have any size (since optional registers can be left off the
9475 end), some sizes are easily recognizable given knowledge of the
9476 approximate architecture. */
9478 struct remote_g_packet_guess
9481 const struct target_desc
*tdesc
;
9483 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9484 DEF_VEC_O(remote_g_packet_guess_s
);
9486 struct remote_g_packet_data
9488 VEC(remote_g_packet_guess_s
) *guesses
;
9491 static struct gdbarch_data
*remote_g_packet_data_handle
;
9494 remote_g_packet_data_init (struct obstack
*obstack
)
9496 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9500 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9501 const struct target_desc
*tdesc
)
9503 struct remote_g_packet_data
*data
9504 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9505 struct remote_g_packet_guess new_guess
, *guess
;
9508 gdb_assert (tdesc
!= NULL
);
9511 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9513 if (guess
->bytes
== bytes
)
9514 internal_error (__FILE__
, __LINE__
,
9515 _("Duplicate g packet description added for size %d"),
9518 new_guess
.bytes
= bytes
;
9519 new_guess
.tdesc
= tdesc
;
9520 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9523 /* Return 1 if remote_read_description would do anything on this target
9524 and architecture, 0 otherwise. */
9527 remote_read_description_p (struct target_ops
*target
)
9529 struct remote_g_packet_data
*data
9530 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9532 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9538 static const struct target_desc
*
9539 remote_read_description (struct target_ops
*target
)
9541 struct remote_g_packet_data
*data
9542 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9544 /* Do not try this during initial connection, when we do not know
9545 whether there is a running but stopped thread. */
9546 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9549 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9551 struct remote_g_packet_guess
*guess
;
9553 int bytes
= send_g_packet ();
9556 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9558 if (guess
->bytes
== bytes
)
9559 return guess
->tdesc
;
9561 /* We discard the g packet. A minor optimization would be to
9562 hold on to it, and fill the register cache once we have selected
9563 an architecture, but it's too tricky to do safely. */
9569 /* Remote file transfer support. This is host-initiated I/O, not
9570 target-initiated; for target-initiated, see remote-fileio.c. */
9572 /* If *LEFT is at least the length of STRING, copy STRING to
9573 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9574 decrease *LEFT. Otherwise raise an error. */
9577 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9579 int len
= strlen (string
);
9582 error (_("Packet too long for target."));
9584 memcpy (*buffer
, string
, len
);
9588 /* NUL-terminate the buffer as a convenience, if there is
9594 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9595 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9596 decrease *LEFT. Otherwise raise an error. */
9599 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9602 if (2 * len
> *left
)
9603 error (_("Packet too long for target."));
9605 bin2hex (bytes
, *buffer
, len
);
9609 /* NUL-terminate the buffer as a convenience, if there is
9615 /* If *LEFT is large enough, convert VALUE to hex and add it to
9616 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9617 decrease *LEFT. Otherwise raise an error. */
9620 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9622 int len
= hexnumlen (value
);
9625 error (_("Packet too long for target."));
9627 hexnumstr (*buffer
, value
);
9631 /* NUL-terminate the buffer as a convenience, if there is
9637 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9638 value, *REMOTE_ERRNO to the remote error number or zero if none
9639 was included, and *ATTACHMENT to point to the start of the annex
9640 if any. The length of the packet isn't needed here; there may
9641 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9643 Return 0 if the packet could be parsed, -1 if it could not. If
9644 -1 is returned, the other variables may not be initialized. */
9647 remote_hostio_parse_result (char *buffer
, int *retcode
,
9648 int *remote_errno
, char **attachment
)
9655 if (buffer
[0] != 'F')
9659 *retcode
= strtol (&buffer
[1], &p
, 16);
9660 if (errno
!= 0 || p
== &buffer
[1])
9663 /* Check for ",errno". */
9667 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9668 if (errno
!= 0 || p
+ 1 == p2
)
9673 /* Check for ";attachment". If there is no attachment, the
9674 packet should end here. */
9677 *attachment
= p
+ 1;
9680 else if (*p
== '\0')
9686 /* Send a prepared I/O packet to the target and read its response.
9687 The prepared packet is in the global RS->BUF before this function
9688 is called, and the answer is there when we return.
9690 COMMAND_BYTES is the length of the request to send, which may include
9691 binary data. WHICH_PACKET is the packet configuration to check
9692 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9693 is set to the error number and -1 is returned. Otherwise the value
9694 returned by the function is returned.
9696 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9697 attachment is expected; an error will be reported if there's a
9698 mismatch. If one is found, *ATTACHMENT will be set to point into
9699 the packet buffer and *ATTACHMENT_LEN will be set to the
9700 attachment's length. */
9703 remote_hostio_send_command (int command_bytes
, int which_packet
,
9704 int *remote_errno
, char **attachment
,
9705 int *attachment_len
)
9707 struct remote_state
*rs
= get_remote_state ();
9708 int ret
, bytes_read
;
9709 char *attachment_tmp
;
9711 if (!rs
->remote_desc
9712 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
9714 *remote_errno
= FILEIO_ENOSYS
;
9718 putpkt_binary (rs
->buf
, command_bytes
);
9719 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9721 /* If it timed out, something is wrong. Don't try to parse the
9725 *remote_errno
= FILEIO_EINVAL
;
9729 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9732 *remote_errno
= FILEIO_EINVAL
;
9734 case PACKET_UNKNOWN
:
9735 *remote_errno
= FILEIO_ENOSYS
;
9741 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9744 *remote_errno
= FILEIO_EINVAL
;
9748 /* Make sure we saw an attachment if and only if we expected one. */
9749 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9750 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9752 *remote_errno
= FILEIO_EINVAL
;
9756 /* If an attachment was found, it must point into the packet buffer;
9757 work out how many bytes there were. */
9758 if (attachment_tmp
!= NULL
)
9760 *attachment
= attachment_tmp
;
9761 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9767 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9768 remote file descriptor, or -1 if an error occurs (and set
9772 remote_hostio_open (const char *filename
, int flags
, int mode
,
9775 struct remote_state
*rs
= get_remote_state ();
9777 int left
= get_remote_packet_size () - 1;
9779 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9781 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9783 remote_buffer_add_string (&p
, &left
, ",");
9785 remote_buffer_add_int (&p
, &left
, flags
);
9786 remote_buffer_add_string (&p
, &left
, ",");
9788 remote_buffer_add_int (&p
, &left
, mode
);
9790 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9791 remote_errno
, NULL
, NULL
);
9794 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9795 Return the number of bytes written, or -1 if an error occurs (and
9796 set *REMOTE_ERRNO). */
9799 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
9800 ULONGEST offset
, int *remote_errno
)
9802 struct remote_state
*rs
= get_remote_state ();
9804 int left
= get_remote_packet_size ();
9807 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9809 remote_buffer_add_int (&p
, &left
, fd
);
9810 remote_buffer_add_string (&p
, &left
, ",");
9812 remote_buffer_add_int (&p
, &left
, offset
);
9813 remote_buffer_add_string (&p
, &left
, ",");
9815 p
+= remote_escape_output (write_buf
, len
, (gdb_byte
*) p
, &out_len
,
9816 get_remote_packet_size () - (p
- rs
->buf
));
9818 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9819 remote_errno
, NULL
, NULL
);
9822 /* Read up to LEN bytes FD on the remote target into READ_BUF
9823 Return the number of bytes read, or -1 if an error occurs (and
9824 set *REMOTE_ERRNO). */
9827 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
9828 ULONGEST offset
, int *remote_errno
)
9830 struct remote_state
*rs
= get_remote_state ();
9833 int left
= get_remote_packet_size ();
9834 int ret
, attachment_len
;
9837 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9839 remote_buffer_add_int (&p
, &left
, fd
);
9840 remote_buffer_add_string (&p
, &left
, ",");
9842 remote_buffer_add_int (&p
, &left
, len
);
9843 remote_buffer_add_string (&p
, &left
, ",");
9845 remote_buffer_add_int (&p
, &left
, offset
);
9847 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9848 remote_errno
, &attachment
,
9854 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9856 if (read_len
!= ret
)
9857 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9862 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9863 (and set *REMOTE_ERRNO). */
9866 remote_hostio_close (int fd
, int *remote_errno
)
9868 struct remote_state
*rs
= get_remote_state ();
9870 int left
= get_remote_packet_size () - 1;
9872 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9874 remote_buffer_add_int (&p
, &left
, fd
);
9876 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9877 remote_errno
, NULL
, NULL
);
9880 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9881 occurs (and set *REMOTE_ERRNO). */
9884 remote_hostio_unlink (const char *filename
, int *remote_errno
)
9886 struct remote_state
*rs
= get_remote_state ();
9888 int left
= get_remote_packet_size () - 1;
9890 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9892 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9895 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9896 remote_errno
, NULL
, NULL
);
9899 /* Read value of symbolic link FILENAME on the remote target. Return
9900 a null-terminated string allocated via xmalloc, or NULL if an error
9901 occurs (and set *REMOTE_ERRNO). */
9904 remote_hostio_readlink (const char *filename
, int *remote_errno
)
9906 struct remote_state
*rs
= get_remote_state ();
9909 int left
= get_remote_packet_size ();
9910 int len
, attachment_len
;
9914 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9916 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9919 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9920 remote_errno
, &attachment
,
9926 ret
= xmalloc (len
+ 1);
9928 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9929 (gdb_byte
*) ret
, len
);
9930 if (read_len
!= len
)
9931 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9938 remote_fileio_errno_to_host (int errnum
)
9962 case FILEIO_ENOTDIR
:
9982 case FILEIO_ENAMETOOLONG
:
9983 return ENAMETOOLONG
;
9989 remote_hostio_error (int errnum
)
9991 int host_error
= remote_fileio_errno_to_host (errnum
);
9993 if (host_error
== -1)
9994 error (_("Unknown remote I/O error %d"), errnum
);
9996 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
10000 remote_hostio_close_cleanup (void *opaque
)
10002 int fd
= *(int *) opaque
;
10005 remote_hostio_close (fd
, &remote_errno
);
10010 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
10012 const char *filename
= bfd_get_filename (abfd
);
10013 int fd
, remote_errno
;
10016 gdb_assert (remote_filename_p (filename
));
10018 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
10021 errno
= remote_fileio_errno_to_host (remote_errno
);
10022 bfd_set_error (bfd_error_system_call
);
10026 stream
= xmalloc (sizeof (int));
10032 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
10034 int fd
= *(int *)stream
;
10039 /* Ignore errors on close; these may happen if the remote
10040 connection was already torn down. */
10041 remote_hostio_close (fd
, &remote_errno
);
10043 /* Zero means success. */
10048 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
10049 file_ptr nbytes
, file_ptr offset
)
10051 int fd
= *(int *)stream
;
10053 file_ptr pos
, bytes
;
10056 while (nbytes
> pos
)
10058 bytes
= remote_hostio_pread (fd
, (gdb_byte
*) buf
+ pos
, nbytes
- pos
,
10059 offset
+ pos
, &remote_errno
);
10061 /* Success, but no bytes, means end-of-file. */
10065 errno
= remote_fileio_errno_to_host (remote_errno
);
10066 bfd_set_error (bfd_error_system_call
);
10077 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
10079 /* FIXME: We should probably implement remote_hostio_stat. */
10080 sb
->st_size
= INT_MAX
;
10085 remote_filename_p (const char *filename
)
10087 return strncmp (filename
, "remote:", 7) == 0;
10091 remote_bfd_open (const char *remote_file
, const char *target
)
10093 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
10094 remote_bfd_iovec_open
, NULL
,
10095 remote_bfd_iovec_pread
,
10096 remote_bfd_iovec_close
,
10097 remote_bfd_iovec_stat
);
10103 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
10105 struct cleanup
*back_to
, *close_cleanup
;
10106 int retcode
, fd
, remote_errno
, bytes
, io_size
;
10109 int bytes_in_buffer
;
10112 struct remote_state
*rs
= get_remote_state ();
10114 if (!rs
->remote_desc
)
10115 error (_("command can only be used with remote target"));
10117 file
= gdb_fopen_cloexec (local_file
, "rb");
10119 perror_with_name (local_file
);
10120 back_to
= make_cleanup_fclose (file
);
10122 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
10124 0700, &remote_errno
);
10126 remote_hostio_error (remote_errno
);
10128 /* Send up to this many bytes at once. They won't all fit in the
10129 remote packet limit, so we'll transfer slightly fewer. */
10130 io_size
= get_remote_packet_size ();
10131 buffer
= xmalloc (io_size
);
10132 make_cleanup (xfree
, buffer
);
10134 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10136 bytes_in_buffer
= 0;
10139 while (bytes_in_buffer
|| !saw_eof
)
10143 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
10144 io_size
- bytes_in_buffer
,
10149 error (_("Error reading %s."), local_file
);
10152 /* EOF. Unless there is something still in the
10153 buffer from the last iteration, we are done. */
10155 if (bytes_in_buffer
== 0)
10163 bytes
+= bytes_in_buffer
;
10164 bytes_in_buffer
= 0;
10166 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
,
10167 offset
, &remote_errno
);
10170 remote_hostio_error (remote_errno
);
10171 else if (retcode
== 0)
10172 error (_("Remote write of %d bytes returned 0!"), bytes
);
10173 else if (retcode
< bytes
)
10175 /* Short write. Save the rest of the read data for the next
10177 bytes_in_buffer
= bytes
- retcode
;
10178 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
10184 discard_cleanups (close_cleanup
);
10185 if (remote_hostio_close (fd
, &remote_errno
))
10186 remote_hostio_error (remote_errno
);
10189 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
10190 do_cleanups (back_to
);
10194 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
10196 struct cleanup
*back_to
, *close_cleanup
;
10197 int fd
, remote_errno
, bytes
, io_size
;
10201 struct remote_state
*rs
= get_remote_state ();
10203 if (!rs
->remote_desc
)
10204 error (_("command can only be used with remote target"));
10206 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
10208 remote_hostio_error (remote_errno
);
10210 file
= gdb_fopen_cloexec (local_file
, "wb");
10212 perror_with_name (local_file
);
10213 back_to
= make_cleanup_fclose (file
);
10215 /* Send up to this many bytes at once. They won't all fit in the
10216 remote packet limit, so we'll transfer slightly fewer. */
10217 io_size
= get_remote_packet_size ();
10218 buffer
= xmalloc (io_size
);
10219 make_cleanup (xfree
, buffer
);
10221 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10226 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
10228 /* Success, but no bytes, means end-of-file. */
10231 remote_hostio_error (remote_errno
);
10235 bytes
= fwrite (buffer
, 1, bytes
, file
);
10237 perror_with_name (local_file
);
10240 discard_cleanups (close_cleanup
);
10241 if (remote_hostio_close (fd
, &remote_errno
))
10242 remote_hostio_error (remote_errno
);
10245 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
10246 do_cleanups (back_to
);
10250 remote_file_delete (const char *remote_file
, int from_tty
)
10252 int retcode
, remote_errno
;
10253 struct remote_state
*rs
= get_remote_state ();
10255 if (!rs
->remote_desc
)
10256 error (_("command can only be used with remote target"));
10258 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
10260 remote_hostio_error (remote_errno
);
10263 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
10267 remote_put_command (char *args
, int from_tty
)
10269 struct cleanup
*back_to
;
10273 error_no_arg (_("file to put"));
10275 argv
= gdb_buildargv (args
);
10276 back_to
= make_cleanup_freeargv (argv
);
10277 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10278 error (_("Invalid parameters to remote put"));
10280 remote_file_put (argv
[0], argv
[1], from_tty
);
10282 do_cleanups (back_to
);
10286 remote_get_command (char *args
, int from_tty
)
10288 struct cleanup
*back_to
;
10292 error_no_arg (_("file to get"));
10294 argv
= gdb_buildargv (args
);
10295 back_to
= make_cleanup_freeargv (argv
);
10296 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10297 error (_("Invalid parameters to remote get"));
10299 remote_file_get (argv
[0], argv
[1], from_tty
);
10301 do_cleanups (back_to
);
10305 remote_delete_command (char *args
, int from_tty
)
10307 struct cleanup
*back_to
;
10311 error_no_arg (_("file to delete"));
10313 argv
= gdb_buildargv (args
);
10314 back_to
= make_cleanup_freeargv (argv
);
10315 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10316 error (_("Invalid parameters to remote delete"));
10318 remote_file_delete (argv
[0], from_tty
);
10320 do_cleanups (back_to
);
10324 remote_command (char *args
, int from_tty
)
10326 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
10330 remote_can_execute_reverse (void)
10332 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
10333 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
10340 remote_supports_non_stop (void)
10346 remote_supports_disable_randomization (void)
10348 /* Only supported in extended mode. */
10353 remote_supports_multi_process (void)
10355 struct remote_state
*rs
= get_remote_state ();
10357 /* Only extended-remote handles being attached to multiple
10358 processes, even though plain remote can use the multi-process
10359 thread id extensions, so that GDB knows the target process's
10361 return rs
->extended
&& remote_multi_process_p (rs
);
10365 remote_supports_cond_tracepoints (void)
10367 struct remote_state
*rs
= get_remote_state ();
10369 return rs
->cond_tracepoints
;
10373 remote_supports_cond_breakpoints (void)
10375 struct remote_state
*rs
= get_remote_state ();
10377 return rs
->cond_breakpoints
;
10381 remote_supports_fast_tracepoints (void)
10383 struct remote_state
*rs
= get_remote_state ();
10385 return rs
->fast_tracepoints
;
10389 remote_supports_static_tracepoints (void)
10391 struct remote_state
*rs
= get_remote_state ();
10393 return rs
->static_tracepoints
;
10397 remote_supports_install_in_trace (void)
10399 struct remote_state
*rs
= get_remote_state ();
10401 return rs
->install_in_trace
;
10405 remote_supports_enable_disable_tracepoint (void)
10407 struct remote_state
*rs
= get_remote_state ();
10409 return rs
->enable_disable_tracepoints
;
10413 remote_supports_string_tracing (void)
10415 struct remote_state
*rs
= get_remote_state ();
10417 return rs
->string_tracing
;
10421 remote_can_run_breakpoint_commands (void)
10423 struct remote_state
*rs
= get_remote_state ();
10425 return rs
->breakpoint_commands
;
10429 remote_trace_init (void)
10432 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10433 if (strcmp (target_buf
, "OK") != 0)
10434 error (_("Target does not support this command."));
10437 static void free_actions_list (char **actions_list
);
10438 static void free_actions_list_cleanup_wrapper (void *);
10440 free_actions_list_cleanup_wrapper (void *al
)
10442 free_actions_list (al
);
10446 free_actions_list (char **actions_list
)
10450 if (actions_list
== 0)
10453 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10454 xfree (actions_list
[ndx
]);
10456 xfree (actions_list
);
10459 /* Recursive routine to walk through command list including loops, and
10460 download packets for each command. */
10463 remote_download_command_source (int num
, ULONGEST addr
,
10464 struct command_line
*cmds
)
10466 struct remote_state
*rs
= get_remote_state ();
10467 struct command_line
*cmd
;
10469 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10471 QUIT
; /* Allow user to bail out with ^C. */
10472 strcpy (rs
->buf
, "QTDPsrc:");
10473 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10474 rs
->buf
+ strlen (rs
->buf
),
10475 rs
->buf_size
- strlen (rs
->buf
));
10477 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10478 if (strcmp (target_buf
, "OK"))
10479 warning (_("Target does not support source download."));
10481 if (cmd
->control_type
== while_control
10482 || cmd
->control_type
== while_stepping_control
)
10484 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10486 QUIT
; /* Allow user to bail out with ^C. */
10487 strcpy (rs
->buf
, "QTDPsrc:");
10488 encode_source_string (num
, addr
, "cmd", "end",
10489 rs
->buf
+ strlen (rs
->buf
),
10490 rs
->buf_size
- strlen (rs
->buf
));
10492 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10493 if (strcmp (target_buf
, "OK"))
10494 warning (_("Target does not support source download."));
10500 remote_download_tracepoint (struct bp_location
*loc
)
10502 #define BUF_SIZE 2048
10506 char buf
[BUF_SIZE
];
10507 char **tdp_actions
;
10508 char **stepping_actions
;
10510 struct cleanup
*old_chain
= NULL
;
10511 struct agent_expr
*aexpr
;
10512 struct cleanup
*aexpr_chain
= NULL
;
10514 struct breakpoint
*b
= loc
->owner
;
10515 struct tracepoint
*t
= (struct tracepoint
*) b
;
10517 encode_actions_rsp (loc
, &tdp_actions
, &stepping_actions
);
10518 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10520 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10523 tpaddr
= loc
->address
;
10524 sprintf_vma (addrbuf
, tpaddr
);
10525 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10526 addrbuf
, /* address */
10527 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10528 t
->step_count
, t
->pass_count
);
10529 /* Fast tracepoints are mostly handled by the target, but we can
10530 tell the target how big of an instruction block should be moved
10532 if (b
->type
== bp_fast_tracepoint
)
10534 /* Only test for support at download time; we may not know
10535 target capabilities at definition time. */
10536 if (remote_supports_fast_tracepoints ())
10540 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10541 tpaddr
, &isize
, NULL
))
10542 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10545 /* If it passed validation at definition but fails now,
10546 something is very wrong. */
10547 internal_error (__FILE__
, __LINE__
,
10548 _("Fast tracepoint not "
10549 "valid during download"));
10552 /* Fast tracepoints are functionally identical to regular
10553 tracepoints, so don't take lack of support as a reason to
10554 give up on the trace run. */
10555 warning (_("Target does not support fast tracepoints, "
10556 "downloading %d as regular tracepoint"), b
->number
);
10558 else if (b
->type
== bp_static_tracepoint
)
10560 /* Only test for support at download time; we may not know
10561 target capabilities at definition time. */
10562 if (remote_supports_static_tracepoints ())
10564 struct static_tracepoint_marker marker
;
10566 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10567 strcat (buf
, ":S");
10569 error (_("Static tracepoint not valid during download"));
10572 /* Fast tracepoints are functionally identical to regular
10573 tracepoints, so don't take lack of support as a reason
10574 to give up on the trace run. */
10575 error (_("Target does not support static tracepoints"));
10577 /* If the tracepoint has a conditional, make it into an agent
10578 expression and append to the definition. */
10581 /* Only test support at download time, we may not know target
10582 capabilities at definition time. */
10583 if (remote_supports_cond_tracepoints ())
10585 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10586 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10587 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10589 pkt
= buf
+ strlen (buf
);
10590 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10591 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10593 do_cleanups (aexpr_chain
);
10596 warning (_("Target does not support conditional tracepoints, "
10597 "ignoring tp %d cond"), b
->number
);
10600 if (b
->commands
|| *default_collect
)
10603 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10604 if (strcmp (target_buf
, "OK"))
10605 error (_("Target does not support tracepoints."));
10607 /* do_single_steps (t); */
10610 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10612 QUIT
; /* Allow user to bail out with ^C. */
10613 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10614 b
->number
, addrbuf
, /* address */
10616 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10619 remote_get_noisy_reply (&target_buf
,
10621 if (strcmp (target_buf
, "OK"))
10622 error (_("Error on target while setting tracepoints."));
10625 if (stepping_actions
)
10627 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10629 QUIT
; /* Allow user to bail out with ^C. */
10630 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10631 b
->number
, addrbuf
, /* address */
10632 ((ndx
== 0) ? "S" : ""),
10633 stepping_actions
[ndx
],
10634 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10636 remote_get_noisy_reply (&target_buf
,
10638 if (strcmp (target_buf
, "OK"))
10639 error (_("Error on target while setting tracepoints."));
10643 if (remote_protocol_packets
[PACKET_TracepointSource
].support
10646 if (b
->addr_string
)
10648 strcpy (buf
, "QTDPsrc:");
10649 encode_source_string (b
->number
, loc
->address
,
10650 "at", b
->addr_string
, buf
+ strlen (buf
),
10651 2048 - strlen (buf
));
10654 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10655 if (strcmp (target_buf
, "OK"))
10656 warning (_("Target does not support source download."));
10658 if (b
->cond_string
)
10660 strcpy (buf
, "QTDPsrc:");
10661 encode_source_string (b
->number
, loc
->address
,
10662 "cond", b
->cond_string
, buf
+ strlen (buf
),
10663 2048 - strlen (buf
));
10665 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10666 if (strcmp (target_buf
, "OK"))
10667 warning (_("Target does not support source download."));
10669 remote_download_command_source (b
->number
, loc
->address
,
10670 breakpoint_commands (b
));
10673 do_cleanups (old_chain
);
10677 remote_can_download_tracepoint (void)
10679 struct remote_state
*rs
= get_remote_state ();
10680 struct trace_status
*ts
;
10683 /* Don't try to install tracepoints until we've relocated our
10684 symbols, and fetched and merged the target's tracepoint list with
10686 if (rs
->starting_up
)
10689 ts
= current_trace_status ();
10690 status
= remote_get_trace_status (ts
);
10692 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10695 /* If we are in a tracing experiment, but remote stub doesn't support
10696 installing tracepoint in trace, we have to return. */
10697 if (!remote_supports_install_in_trace ())
10705 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
10707 struct remote_state
*rs
= get_remote_state ();
10710 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10711 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10713 p
= rs
->buf
+ strlen (rs
->buf
);
10714 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10715 error (_("Trace state variable name too long for tsv definition packet"));
10716 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
10719 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10720 if (*target_buf
== '\0')
10721 error (_("Target does not support this command."));
10722 if (strcmp (target_buf
, "OK") != 0)
10723 error (_("Error on target while downloading trace state variable."));
10727 remote_enable_tracepoint (struct bp_location
*location
)
10729 struct remote_state
*rs
= get_remote_state ();
10732 sprintf_vma (addr_buf
, location
->address
);
10733 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10734 location
->owner
->number
, addr_buf
);
10736 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10737 if (*rs
->buf
== '\0')
10738 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10739 if (strcmp (rs
->buf
, "OK") != 0)
10740 error (_("Error on target while enabling tracepoint."));
10744 remote_disable_tracepoint (struct bp_location
*location
)
10746 struct remote_state
*rs
= get_remote_state ();
10749 sprintf_vma (addr_buf
, location
->address
);
10750 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10751 location
->owner
->number
, addr_buf
);
10753 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10754 if (*rs
->buf
== '\0')
10755 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10756 if (strcmp (rs
->buf
, "OK") != 0)
10757 error (_("Error on target while disabling tracepoint."));
10761 remote_trace_set_readonly_regions (void)
10765 bfd_size_type size
;
10771 return; /* No information to give. */
10773 strcpy (target_buf
, "QTro");
10774 offset
= strlen (target_buf
);
10775 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10777 char tmp1
[40], tmp2
[40];
10780 if ((s
->flags
& SEC_LOAD
) == 0 ||
10781 /* (s->flags & SEC_CODE) == 0 || */
10782 (s
->flags
& SEC_READONLY
) == 0)
10786 vma
= bfd_get_section_vma (abfd
, s
);
10787 size
= bfd_get_section_size (s
);
10788 sprintf_vma (tmp1
, vma
);
10789 sprintf_vma (tmp2
, vma
+ size
);
10790 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10791 if (offset
+ sec_length
+ 1 > target_buf_size
)
10793 if (remote_protocol_packets
[PACKET_qXfer_traceframe_info
].support
10796 Too many sections for read-only sections definition packet."));
10799 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10801 offset
+= sec_length
;
10805 putpkt (target_buf
);
10806 getpkt (&target_buf
, &target_buf_size
, 0);
10811 remote_trace_start (void)
10813 putpkt ("QTStart");
10814 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10815 if (*target_buf
== '\0')
10816 error (_("Target does not support this command."));
10817 if (strcmp (target_buf
, "OK") != 0)
10818 error (_("Bogus reply from target: %s"), target_buf
);
10822 remote_get_trace_status (struct trace_status
*ts
)
10824 /* Initialize it just to avoid a GCC false warning. */
10826 /* FIXME we need to get register block size some other way. */
10827 extern int trace_regblock_size
;
10828 volatile struct gdb_exception ex
;
10829 enum packet_result result
;
10831 if (remote_protocol_packets
[PACKET_qTStatus
].support
== PACKET_DISABLE
)
10834 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10836 putpkt ("qTStatus");
10838 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10840 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10844 if (ex
.error
!= TARGET_CLOSE_ERROR
)
10846 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10849 throw_exception (ex
);
10852 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
10854 /* If the remote target doesn't do tracing, flag it. */
10855 if (result
== PACKET_UNKNOWN
)
10858 /* We're working with a live target. */
10859 ts
->filename
= NULL
;
10862 error (_("Bogus trace status reply from target: %s"), target_buf
);
10864 /* Function 'parse_trace_status' sets default value of each field of
10865 'ts' at first, so we don't have to do it here. */
10866 parse_trace_status (p
, ts
);
10868 return ts
->running
;
10872 remote_get_tracepoint_status (struct breakpoint
*bp
,
10873 struct uploaded_tp
*utp
)
10875 struct remote_state
*rs
= get_remote_state ();
10877 struct bp_location
*loc
;
10878 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10879 size_t size
= get_remote_packet_size ();
10883 tp
->base
.hit_count
= 0;
10884 tp
->traceframe_usage
= 0;
10885 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10887 /* If the tracepoint was never downloaded, don't go asking for
10889 if (tp
->number_on_target
== 0)
10891 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
10892 phex_nz (loc
->address
, 0));
10894 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10895 if (reply
&& *reply
)
10898 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10904 utp
->hit_count
= 0;
10905 utp
->traceframe_usage
= 0;
10906 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
10907 phex_nz (utp
->addr
, 0));
10909 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10910 if (reply
&& *reply
)
10913 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10919 remote_trace_stop (void)
10922 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10923 if (*target_buf
== '\0')
10924 error (_("Target does not support this command."));
10925 if (strcmp (target_buf
, "OK") != 0)
10926 error (_("Bogus reply from target: %s"), target_buf
);
10930 remote_trace_find (enum trace_find_type type
, int num
,
10931 CORE_ADDR addr1
, CORE_ADDR addr2
,
10934 struct remote_state
*rs
= get_remote_state ();
10935 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10937 int target_frameno
= -1, target_tracept
= -1;
10939 /* Lookups other than by absolute frame number depend on the current
10940 trace selected, so make sure it is correct on the remote end
10942 if (type
!= tfind_number
)
10943 set_remote_traceframe ();
10946 strcpy (p
, "QTFrame:");
10947 p
= strchr (p
, '\0');
10951 xsnprintf (p
, endbuf
- p
, "%x", num
);
10954 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
10957 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
10960 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
10961 phex_nz (addr2
, 0));
10963 case tfind_outside
:
10964 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
10965 phex_nz (addr2
, 0));
10968 error (_("Unknown trace find type %d"), type
);
10972 reply
= remote_get_noisy_reply (&(rs
->buf
), &rs
->buf_size
);
10973 if (*reply
== '\0')
10974 error (_("Target does not support this command."));
10976 while (reply
&& *reply
)
10981 target_frameno
= (int) strtol (p
, &reply
, 16);
10983 error (_("Unable to parse trace frame number"));
10984 /* Don't update our remote traceframe number cache on failure
10985 to select a remote traceframe. */
10986 if (target_frameno
== -1)
10991 target_tracept
= (int) strtol (p
, &reply
, 16);
10993 error (_("Unable to parse tracepoint number"));
10995 case 'O': /* "OK"? */
10996 if (reply
[1] == 'K' && reply
[2] == '\0')
10999 error (_("Bogus reply from target: %s"), reply
);
11002 error (_("Bogus reply from target: %s"), reply
);
11005 *tpp
= target_tracept
;
11007 rs
->remote_traceframe_number
= target_frameno
;
11008 return target_frameno
;
11012 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
11014 struct remote_state
*rs
= get_remote_state ();
11018 set_remote_traceframe ();
11020 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
11022 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11023 if (reply
&& *reply
)
11027 unpack_varlen_hex (reply
+ 1, &uval
);
11028 *val
= (LONGEST
) uval
;
11036 remote_save_trace_data (const char *filename
)
11038 struct remote_state
*rs
= get_remote_state ();
11042 strcpy (p
, "QTSave:");
11044 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
11045 error (_("Remote file name too long for trace save packet"));
11046 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
11049 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11050 if (*reply
== '\0')
11051 error (_("Target does not support this command."));
11052 if (strcmp (reply
, "OK") != 0)
11053 error (_("Bogus reply from target: %s"), reply
);
11057 /* This is basically a memory transfer, but needs to be its own packet
11058 because we don't know how the target actually organizes its trace
11059 memory, plus we want to be able to ask for as much as possible, but
11060 not be unhappy if we don't get as much as we ask for. */
11063 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
11065 struct remote_state
*rs
= get_remote_state ();
11071 strcpy (p
, "qTBuffer:");
11073 p
+= hexnumstr (p
, offset
);
11075 p
+= hexnumstr (p
, len
);
11079 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11080 if (reply
&& *reply
)
11082 /* 'l' by itself means we're at the end of the buffer and
11083 there is nothing more to get. */
11087 /* Convert the reply into binary. Limit the number of bytes to
11088 convert according to our passed-in buffer size, rather than
11089 what was returned in the packet; if the target is
11090 unexpectedly generous and gives us a bigger reply than we
11091 asked for, we don't want to crash. */
11092 rslt
= hex2bin (target_buf
, buf
, len
);
11096 /* Something went wrong, flag as an error. */
11101 remote_set_disconnected_tracing (int val
)
11103 struct remote_state
*rs
= get_remote_state ();
11105 if (rs
->disconnected_tracing
)
11109 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
11111 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11112 if (*reply
== '\0')
11113 error (_("Target does not support this command."));
11114 if (strcmp (reply
, "OK") != 0)
11115 error (_("Bogus reply from target: %s"), reply
);
11118 warning (_("Target does not support disconnected tracing."));
11122 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
11124 struct thread_info
*info
= find_thread_ptid (ptid
);
11126 if (info
&& info
->private)
11127 return info
->private->core
;
11132 remote_set_circular_trace_buffer (int val
)
11134 struct remote_state
*rs
= get_remote_state ();
11137 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
11139 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11140 if (*reply
== '\0')
11141 error (_("Target does not support this command."));
11142 if (strcmp (reply
, "OK") != 0)
11143 error (_("Bogus reply from target: %s"), reply
);
11146 static struct traceframe_info
*
11147 remote_traceframe_info (void)
11151 text
= target_read_stralloc (¤t_target
,
11152 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
11155 struct traceframe_info
*info
;
11156 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
11158 info
= parse_traceframe_info (text
);
11159 do_cleanups (back_to
);
11166 /* Handle the qTMinFTPILen packet. Returns the minimum length of
11167 instruction on which a fast tracepoint may be placed. Returns -1
11168 if the packet is not supported, and 0 if the minimum instruction
11169 length is unknown. */
11172 remote_get_min_fast_tracepoint_insn_len (void)
11174 struct remote_state
*rs
= get_remote_state ();
11177 /* If we're not debugging a process yet, the IPA can't be
11179 if (!target_has_execution
)
11182 /* Make sure the remote is pointing at the right process. */
11183 set_general_process ();
11185 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
11187 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11188 if (*reply
== '\0')
11192 ULONGEST min_insn_len
;
11194 unpack_varlen_hex (reply
, &min_insn_len
);
11196 return (int) min_insn_len
;
11201 remote_set_trace_buffer_size (LONGEST val
)
11203 if (remote_protocol_packets
[PACKET_QTBuffer_size
].support
11206 struct remote_state
*rs
= get_remote_state ();
11207 char *buf
= rs
->buf
;
11208 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11209 enum packet_result result
;
11211 gdb_assert (val
>= 0 || val
== -1);
11212 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
11213 /* Send -1 as literal "-1" to avoid host size dependency. */
11217 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
11220 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
11223 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
11224 result
= packet_ok (rs
->buf
,
11225 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
11227 if (result
!= PACKET_OK
)
11228 warning (_("Bogus reply from target: %s"), rs
->buf
);
11233 remote_set_trace_notes (const char *user
, const char *notes
,
11234 const char *stop_notes
)
11236 struct remote_state
*rs
= get_remote_state ();
11238 char *buf
= rs
->buf
;
11239 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11242 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
11245 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
11246 nbytes
= bin2hex ((gdb_byte
*) user
, buf
, 0);
11252 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
11253 nbytes
= bin2hex ((gdb_byte
*) notes
, buf
, 0);
11259 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
11260 nbytes
= bin2hex ((gdb_byte
*) stop_notes
, buf
, 0);
11264 /* Ensure the buffer is terminated. */
11268 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11269 if (*reply
== '\0')
11272 if (strcmp (reply
, "OK") != 0)
11273 error (_("Bogus reply from target: %s"), reply
);
11279 remote_use_agent (int use
)
11281 if (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
)
11283 struct remote_state
*rs
= get_remote_state ();
11285 /* If the stub supports QAgent. */
11286 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
11288 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11290 if (strcmp (rs
->buf
, "OK") == 0)
11301 remote_can_use_agent (void)
11303 return (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
);
11306 struct btrace_target_info
11308 /* The ptid of the traced thread. */
11312 /* Check whether the target supports branch tracing. */
11315 remote_supports_btrace (void)
11317 if (remote_protocol_packets
[PACKET_Qbtrace_off
].support
!= PACKET_ENABLE
)
11319 if (remote_protocol_packets
[PACKET_Qbtrace_bts
].support
!= PACKET_ENABLE
)
11321 if (remote_protocol_packets
[PACKET_qXfer_btrace
].support
!= PACKET_ENABLE
)
11327 /* Enable branch tracing. */
11329 static struct btrace_target_info
*
11330 remote_enable_btrace (ptid_t ptid
)
11332 struct btrace_target_info
*tinfo
= NULL
;
11333 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
11334 struct remote_state
*rs
= get_remote_state ();
11335 char *buf
= rs
->buf
;
11336 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11338 if (packet
->support
!= PACKET_ENABLE
)
11339 error (_("Target does not support branch tracing."));
11341 set_general_thread (ptid
);
11343 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11345 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11347 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11349 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11350 error (_("Could not enable branch tracing for %s: %s"),
11351 target_pid_to_str (ptid
), rs
->buf
+ 2);
11353 error (_("Could not enable branch tracing for %s."),
11354 target_pid_to_str (ptid
));
11357 tinfo
= xzalloc (sizeof (*tinfo
));
11358 tinfo
->ptid
= ptid
;
11363 /* Disable branch tracing. */
11366 remote_disable_btrace (struct btrace_target_info
*tinfo
)
11368 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
11369 struct remote_state
*rs
= get_remote_state ();
11370 char *buf
= rs
->buf
;
11371 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11373 if (packet
->support
!= PACKET_ENABLE
)
11374 error (_("Target does not support branch tracing."));
11376 set_general_thread (tinfo
->ptid
);
11378 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11380 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11382 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11384 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11385 error (_("Could not disable branch tracing for %s: %s"),
11386 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
11388 error (_("Could not disable branch tracing for %s."),
11389 target_pid_to_str (tinfo
->ptid
));
11395 /* Teardown branch tracing. */
11398 remote_teardown_btrace (struct btrace_target_info
*tinfo
)
11400 /* We must not talk to the target during teardown. */
11404 /* Read the branch trace. */
11406 static VEC (btrace_block_s
) *
11407 remote_read_btrace (struct btrace_target_info
*tinfo
,
11408 enum btrace_read_type type
)
11410 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
11411 struct remote_state
*rs
= get_remote_state ();
11412 VEC (btrace_block_s
) *btrace
= NULL
;
11416 if (packet
->support
!= PACKET_ENABLE
)
11417 error (_("Target does not support branch tracing."));
11419 #if !defined(HAVE_LIBEXPAT)
11420 error (_("Cannot process branch tracing result. XML parsing not supported."));
11425 case btrace_read_all
:
11428 case btrace_read_new
:
11432 internal_error (__FILE__
, __LINE__
,
11433 _("Bad branch tracing read type: %u."),
11434 (unsigned int) type
);
11437 xml
= target_read_stralloc (¤t_target
,
11438 TARGET_OBJECT_BTRACE
, annex
);
11441 struct cleanup
*cleanup
= make_cleanup (xfree
, xml
);
11443 btrace
= parse_xml_btrace (xml
);
11444 do_cleanups (cleanup
);
11451 remote_augmented_libraries_svr4_read (void)
11453 struct remote_state
*rs
= get_remote_state ();
11455 return rs
->augmented_libraries_svr4_read
;
11459 init_remote_ops (void)
11461 remote_ops
.to_shortname
= "remote";
11462 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11463 remote_ops
.to_doc
=
11464 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11465 Specify the serial device it is connected to\n\
11466 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11467 remote_ops
.to_open
= remote_open
;
11468 remote_ops
.to_close
= remote_close
;
11469 remote_ops
.to_detach
= remote_detach
;
11470 remote_ops
.to_disconnect
= remote_disconnect
;
11471 remote_ops
.to_resume
= remote_resume
;
11472 remote_ops
.to_wait
= remote_wait
;
11473 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11474 remote_ops
.to_store_registers
= remote_store_registers
;
11475 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11476 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
11477 remote_ops
.to_files_info
= remote_files_info
;
11478 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11479 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11480 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11481 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11482 remote_ops
.to_watchpoint_addr_within_range
=
11483 remote_watchpoint_addr_within_range
;
11484 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11485 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11486 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11487 remote_ops
.to_region_ok_for_hw_watchpoint
11488 = remote_region_ok_for_hw_watchpoint
;
11489 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11490 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11491 remote_ops
.to_kill
= remote_kill
;
11492 remote_ops
.to_load
= generic_load
;
11493 remote_ops
.to_mourn_inferior
= remote_mourn
;
11494 remote_ops
.to_pass_signals
= remote_pass_signals
;
11495 remote_ops
.to_program_signals
= remote_program_signals
;
11496 remote_ops
.to_thread_alive
= remote_thread_alive
;
11497 remote_ops
.to_find_new_threads
= remote_threads_info
;
11498 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11499 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11500 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11501 remote_ops
.to_stop
= remote_stop
;
11502 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11503 remote_ops
.to_rcmd
= remote_rcmd
;
11504 remote_ops
.to_log_command
= serial_log_command
;
11505 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11506 remote_ops
.to_stratum
= process_stratum
;
11507 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11508 remote_ops
.to_has_memory
= default_child_has_memory
;
11509 remote_ops
.to_has_stack
= default_child_has_stack
;
11510 remote_ops
.to_has_registers
= default_child_has_registers
;
11511 remote_ops
.to_has_execution
= default_child_has_execution
;
11512 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11513 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11514 remote_ops
.to_magic
= OPS_MAGIC
;
11515 remote_ops
.to_memory_map
= remote_memory_map
;
11516 remote_ops
.to_flash_erase
= remote_flash_erase
;
11517 remote_ops
.to_flash_done
= remote_flash_done
;
11518 remote_ops
.to_read_description
= remote_read_description
;
11519 remote_ops
.to_search_memory
= remote_search_memory
;
11520 remote_ops
.to_can_async_p
= remote_can_async_p
;
11521 remote_ops
.to_is_async_p
= remote_is_async_p
;
11522 remote_ops
.to_async
= remote_async
;
11523 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11524 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11525 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11526 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11527 remote_ops
.to_supports_disable_randomization
11528 = remote_supports_disable_randomization
;
11529 remote_ops
.to_fileio_open
= remote_hostio_open
;
11530 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11531 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11532 remote_ops
.to_fileio_close
= remote_hostio_close
;
11533 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11534 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11535 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11536 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11537 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11538 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11539 remote_ops
.to_trace_init
= remote_trace_init
;
11540 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11541 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11542 remote_ops
.to_download_trace_state_variable
11543 = remote_download_trace_state_variable
;
11544 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11545 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11546 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11547 remote_ops
.to_trace_start
= remote_trace_start
;
11548 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11549 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11550 remote_ops
.to_trace_stop
= remote_trace_stop
;
11551 remote_ops
.to_trace_find
= remote_trace_find
;
11552 remote_ops
.to_get_trace_state_variable_value
11553 = remote_get_trace_state_variable_value
;
11554 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11555 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11556 remote_ops
.to_upload_trace_state_variables
11557 = remote_upload_trace_state_variables
;
11558 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11559 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11560 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11561 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11562 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
11563 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11564 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11565 remote_ops
.to_verify_memory
= remote_verify_memory
;
11566 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11567 remote_ops
.to_set_permissions
= remote_set_permissions
;
11568 remote_ops
.to_static_tracepoint_marker_at
11569 = remote_static_tracepoint_marker_at
;
11570 remote_ops
.to_static_tracepoint_markers_by_strid
11571 = remote_static_tracepoint_markers_by_strid
;
11572 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11573 remote_ops
.to_use_agent
= remote_use_agent
;
11574 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11575 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
11576 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
11577 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
11578 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
11579 remote_ops
.to_read_btrace
= remote_read_btrace
;
11580 remote_ops
.to_augmented_libraries_svr4_read
=
11581 remote_augmented_libraries_svr4_read
;
11584 /* Set up the extended remote vector by making a copy of the standard
11585 remote vector and adding to it. */
11588 init_extended_remote_ops (void)
11590 extended_remote_ops
= remote_ops
;
11592 extended_remote_ops
.to_shortname
= "extended-remote";
11593 extended_remote_ops
.to_longname
=
11594 "Extended remote serial target in gdb-specific protocol";
11595 extended_remote_ops
.to_doc
=
11596 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11597 Specify the serial device it is connected to (e.g. /dev/ttya).";
11598 extended_remote_ops
.to_open
= extended_remote_open
;
11599 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11600 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11601 extended_remote_ops
.to_detach
= extended_remote_detach
;
11602 extended_remote_ops
.to_attach
= extended_remote_attach
;
11603 extended_remote_ops
.to_kill
= extended_remote_kill
;
11604 extended_remote_ops
.to_supports_disable_randomization
11605 = extended_remote_supports_disable_randomization
;
11609 remote_can_async_p (void)
11611 struct remote_state
*rs
= get_remote_state ();
11613 if (!target_async_permitted
)
11614 /* We only enable async when the user specifically asks for it. */
11617 /* We're async whenever the serial device is. */
11618 return serial_can_async_p (rs
->remote_desc
);
11622 remote_is_async_p (void)
11624 struct remote_state
*rs
= get_remote_state ();
11626 if (!target_async_permitted
)
11627 /* We only enable async when the user specifically asks for it. */
11630 /* We're async whenever the serial device is. */
11631 return serial_is_async_p (rs
->remote_desc
);
11634 /* Pass the SERIAL event on and up to the client. One day this code
11635 will be able to delay notifying the client of an event until the
11636 point where an entire packet has been received. */
11638 static void (*async_client_callback
) (enum inferior_event_type event_type
,
11640 static void *async_client_context
;
11641 static serial_event_ftype remote_async_serial_handler
;
11644 remote_async_serial_handler (struct serial
*scb
, void *context
)
11646 /* Don't propogate error information up to the client. Instead let
11647 the client find out about the error by querying the target. */
11648 async_client_callback (INF_REG_EVENT
, async_client_context
);
11652 remote_async_inferior_event_handler (gdb_client_data data
)
11654 inferior_event_handler (INF_REG_EVENT
, NULL
);
11658 remote_async (void (*callback
) (enum inferior_event_type event_type
,
11659 void *context
), void *context
)
11661 struct remote_state
*rs
= get_remote_state ();
11663 if (callback
!= NULL
)
11665 serial_async (rs
->remote_desc
, remote_async_serial_handler
, NULL
);
11666 async_client_callback
= callback
;
11667 async_client_context
= context
;
11670 serial_async (rs
->remote_desc
, NULL
, NULL
);
11674 set_remote_cmd (char *args
, int from_tty
)
11676 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
11680 show_remote_cmd (char *args
, int from_tty
)
11682 /* We can't just use cmd_show_list here, because we want to skip
11683 the redundant "show remote Z-packet" and the legacy aliases. */
11684 struct cleanup
*showlist_chain
;
11685 struct cmd_list_element
*list
= remote_show_cmdlist
;
11686 struct ui_out
*uiout
= current_uiout
;
11688 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
11689 for (; list
!= NULL
; list
= list
->next
)
11690 if (strcmp (list
->name
, "Z-packet") == 0)
11692 else if (list
->type
== not_set_cmd
)
11693 /* Alias commands are exactly like the original, except they
11694 don't have the normal type. */
11698 struct cleanup
*option_chain
11699 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
11701 ui_out_field_string (uiout
, "name", list
->name
);
11702 ui_out_text (uiout
, ": ");
11703 if (list
->type
== show_cmd
)
11704 do_show_command ((char *) NULL
, from_tty
, list
);
11706 cmd_func (list
, NULL
, from_tty
);
11707 /* Close the tuple. */
11708 do_cleanups (option_chain
);
11711 /* Close the tuple. */
11712 do_cleanups (showlist_chain
);
11716 /* Function to be called whenever a new objfile (shlib) is detected. */
11718 remote_new_objfile (struct objfile
*objfile
)
11720 struct remote_state
*rs
= get_remote_state ();
11722 if (rs
->remote_desc
!= 0) /* Have a remote connection. */
11723 remote_check_symbols ();
11726 /* Pull all the tracepoints defined on the target and create local
11727 data structures representing them. We don't want to create real
11728 tracepoints yet, we don't want to mess up the user's existing
11732 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
11734 struct remote_state
*rs
= get_remote_state ();
11737 /* Ask for a first packet of tracepoint definition. */
11739 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11741 while (*p
&& *p
!= 'l')
11743 parse_tracepoint_definition (p
, utpp
);
11744 /* Ask for another packet of tracepoint definition. */
11746 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11753 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
11755 struct remote_state
*rs
= get_remote_state ();
11758 /* Ask for a first packet of variable definition. */
11760 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11762 while (*p
&& *p
!= 'l')
11764 parse_tsv_definition (p
, utsvp
);
11765 /* Ask for another packet of variable definition. */
11767 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11773 /* The "set/show range-stepping" show hook. */
11776 show_range_stepping (struct ui_file
*file
, int from_tty
,
11777 struct cmd_list_element
*c
,
11780 fprintf_filtered (file
,
11781 _("Debugger's willingness to use range stepping "
11782 "is %s.\n"), value
);
11785 /* The "set/show range-stepping" set hook. */
11788 set_range_stepping (char *ignore_args
, int from_tty
,
11789 struct cmd_list_element
*c
)
11791 struct remote_state
*rs
= get_remote_state ();
11793 /* Whene enabling, check whether range stepping is actually
11794 supported by the target, and warn if not. */
11795 if (use_range_stepping
)
11797 if (rs
->remote_desc
!= NULL
)
11799 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
11800 remote_vcont_probe (rs
);
11802 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_ENABLE
11803 && rs
->supports_vCont
.r
)
11807 warning (_("Range stepping is not supported by the current target"));
11812 _initialize_remote (void)
11814 struct remote_state
*rs
;
11815 struct cmd_list_element
*cmd
;
11816 const char *cmd_name
;
11818 /* architecture specific data */
11819 remote_gdbarch_data_handle
=
11820 gdbarch_data_register_post_init (init_remote_state
);
11821 remote_g_packet_data_handle
=
11822 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
11824 /* Initialize the per-target state. At the moment there is only one
11825 of these, not one per target. Only one target is active at a
11827 remote_state
= new_remote_state ();
11829 init_remote_ops ();
11830 add_target (&remote_ops
);
11832 init_extended_remote_ops ();
11833 add_target (&extended_remote_ops
);
11835 /* Hook into new objfile notification. */
11836 observer_attach_new_objfile (remote_new_objfile
);
11837 /* We're no longer interested in notification events of an inferior
11839 observer_attach_inferior_exit (discard_pending_stop_replies
);
11841 /* Set up signal handlers. */
11842 async_sigint_remote_token
=
11843 create_async_signal_handler (async_remote_interrupt
, NULL
);
11844 async_sigint_remote_twice_token
=
11845 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11848 init_remote_threadtests ();
11851 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
11852 /* set/show remote ... */
11854 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11855 Remote protocol specific variables\n\
11856 Configure various remote-protocol specific variables such as\n\
11857 the packets being used"),
11858 &remote_set_cmdlist
, "set remote ",
11859 0 /* allow-unknown */, &setlist
);
11860 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11861 Remote protocol specific variables\n\
11862 Configure various remote-protocol specific variables such as\n\
11863 the packets being used"),
11864 &remote_show_cmdlist
, "show remote ",
11865 0 /* allow-unknown */, &showlist
);
11867 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11868 Compare section data on target to the exec file.\n\
11869 Argument is a single section name (default: all loaded sections)."),
11872 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11873 Send an arbitrary packet to a remote target.\n\
11874 maintenance packet TEXT\n\
11875 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11876 this command sends the string TEXT to the inferior, and displays the\n\
11877 response packet. GDB supplies the initial `$' character, and the\n\
11878 terminating `#' character and checksum."),
11881 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11882 Set whether to send break if interrupted."), _("\
11883 Show whether to send break if interrupted."), _("\
11884 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11885 set_remotebreak
, show_remotebreak
,
11886 &setlist
, &showlist
);
11887 cmd_name
= "remotebreak";
11888 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11889 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11890 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11891 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11892 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11894 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11895 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11897 Set interrupt sequence to remote target."), _("\
11898 Show interrupt sequence to remote target."), _("\
11899 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11900 NULL
, show_interrupt_sequence
,
11901 &remote_set_cmdlist
,
11902 &remote_show_cmdlist
);
11904 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11905 &interrupt_on_connect
, _("\
11906 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11907 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11908 If set, interrupt sequence is sent to remote target."),
11910 &remote_set_cmdlist
, &remote_show_cmdlist
);
11912 /* Install commands for configuring memory read/write packets. */
11914 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11915 Set the maximum number of bytes per memory write packet (deprecated)."),
11917 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11918 Show the maximum number of bytes per memory write packet (deprecated)."),
11920 add_cmd ("memory-write-packet-size", no_class
,
11921 set_memory_write_packet_size
, _("\
11922 Set the maximum number of bytes per memory-write packet.\n\
11923 Specify the number of bytes in a packet or 0 (zero) for the\n\
11924 default packet size. The actual limit is further reduced\n\
11925 dependent on the target. Specify ``fixed'' to disable the\n\
11926 further restriction and ``limit'' to enable that restriction."),
11927 &remote_set_cmdlist
);
11928 add_cmd ("memory-read-packet-size", no_class
,
11929 set_memory_read_packet_size
, _("\
11930 Set the maximum number of bytes per memory-read packet.\n\
11931 Specify the number of bytes in a packet or 0 (zero) for the\n\
11932 default packet size. The actual limit is further reduced\n\
11933 dependent on the target. Specify ``fixed'' to disable the\n\
11934 further restriction and ``limit'' to enable that restriction."),
11935 &remote_set_cmdlist
);
11936 add_cmd ("memory-write-packet-size", no_class
,
11937 show_memory_write_packet_size
,
11938 _("Show the maximum number of bytes per memory-write packet."),
11939 &remote_show_cmdlist
);
11940 add_cmd ("memory-read-packet-size", no_class
,
11941 show_memory_read_packet_size
,
11942 _("Show the maximum number of bytes per memory-read packet."),
11943 &remote_show_cmdlist
);
11945 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11946 &remote_hw_watchpoint_limit
, _("\
11947 Set the maximum number of target hardware watchpoints."), _("\
11948 Show the maximum number of target hardware watchpoints."), _("\
11949 Specify a negative limit for unlimited."),
11950 NULL
, NULL
, /* FIXME: i18n: The maximum
11951 number of target hardware
11952 watchpoints is %s. */
11953 &remote_set_cmdlist
, &remote_show_cmdlist
);
11954 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
11955 &remote_hw_watchpoint_length_limit
, _("\
11956 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11957 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11958 Specify a negative limit for unlimited."),
11959 NULL
, NULL
, /* FIXME: i18n: The maximum
11960 length (in bytes) of a target
11961 hardware watchpoint is %s. */
11962 &remote_set_cmdlist
, &remote_show_cmdlist
);
11963 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
11964 &remote_hw_breakpoint_limit
, _("\
11965 Set the maximum number of target hardware breakpoints."), _("\
11966 Show the maximum number of target hardware breakpoints."), _("\
11967 Specify a negative limit for unlimited."),
11968 NULL
, NULL
, /* FIXME: i18n: The maximum
11969 number of target hardware
11970 breakpoints is %s. */
11971 &remote_set_cmdlist
, &remote_show_cmdlist
);
11973 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
11974 &remote_address_size
, _("\
11975 Set the maximum size of the address (in bits) in a memory packet."), _("\
11976 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
11978 NULL
, /* FIXME: i18n: */
11979 &setlist
, &showlist
);
11981 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
11982 "X", "binary-download", 1);
11984 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
11985 "vCont", "verbose-resume", 0);
11987 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
11988 "QPassSignals", "pass-signals", 0);
11990 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
11991 "QProgramSignals", "program-signals", 0);
11993 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
11994 "qSymbol", "symbol-lookup", 0);
11996 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
11997 "P", "set-register", 1);
11999 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
12000 "p", "fetch-register", 1);
12002 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
12003 "Z0", "software-breakpoint", 0);
12005 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
12006 "Z1", "hardware-breakpoint", 0);
12008 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
12009 "Z2", "write-watchpoint", 0);
12011 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
12012 "Z3", "read-watchpoint", 0);
12014 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
12015 "Z4", "access-watchpoint", 0);
12017 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
12018 "qXfer:auxv:read", "read-aux-vector", 0);
12020 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
12021 "qXfer:features:read", "target-features", 0);
12023 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
12024 "qXfer:libraries:read", "library-info", 0);
12026 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
12027 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
12029 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
12030 "qXfer:memory-map:read", "memory-map", 0);
12032 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
12033 "qXfer:spu:read", "read-spu-object", 0);
12035 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
12036 "qXfer:spu:write", "write-spu-object", 0);
12038 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
12039 "qXfer:osdata:read", "osdata", 0);
12041 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
12042 "qXfer:threads:read", "threads", 0);
12044 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
12045 "qXfer:siginfo:read", "read-siginfo-object", 0);
12047 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
12048 "qXfer:siginfo:write", "write-siginfo-object", 0);
12050 add_packet_config_cmd
12051 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
12052 "qXfer:traceframe-info:read", "traceframe-info", 0);
12054 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
12055 "qXfer:uib:read", "unwind-info-block", 0);
12057 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
12058 "qGetTLSAddr", "get-thread-local-storage-address",
12061 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
12062 "qGetTIBAddr", "get-thread-information-block-address",
12065 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
12066 "bc", "reverse-continue", 0);
12068 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
12069 "bs", "reverse-step", 0);
12071 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
12072 "qSupported", "supported-packets", 0);
12074 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
12075 "qSearch:memory", "search-memory", 0);
12077 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
12078 "qTStatus", "trace-status", 0);
12080 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
12081 "vFile:open", "hostio-open", 0);
12083 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
12084 "vFile:pread", "hostio-pread", 0);
12086 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
12087 "vFile:pwrite", "hostio-pwrite", 0);
12089 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
12090 "vFile:close", "hostio-close", 0);
12092 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
12093 "vFile:unlink", "hostio-unlink", 0);
12095 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
12096 "vFile:readlink", "hostio-readlink", 0);
12098 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
12099 "vAttach", "attach", 0);
12101 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
12104 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
12105 "QStartNoAckMode", "noack", 0);
12107 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
12108 "vKill", "kill", 0);
12110 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
12111 "qAttached", "query-attached", 0);
12113 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
12114 "ConditionalTracepoints",
12115 "conditional-tracepoints", 0);
12117 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
12118 "ConditionalBreakpoints",
12119 "conditional-breakpoints", 0);
12121 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
12122 "BreakpointCommands",
12123 "breakpoint-commands", 0);
12125 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
12126 "FastTracepoints", "fast-tracepoints", 0);
12128 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
12129 "TracepointSource", "TracepointSource", 0);
12131 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
12132 "QAllow", "allow", 0);
12134 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
12135 "StaticTracepoints", "static-tracepoints", 0);
12137 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
12138 "InstallInTrace", "install-in-trace", 0);
12140 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
12141 "qXfer:statictrace:read", "read-sdata-object", 0);
12143 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
12144 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
12146 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
12147 "QDisableRandomization", "disable-randomization", 0);
12149 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
12150 "QAgent", "agent", 0);
12152 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
12153 "QTBuffer:size", "trace-buffer-size", 0);
12155 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
12156 "Qbtrace:off", "disable-btrace", 0);
12158 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
12159 "Qbtrace:bts", "enable-btrace", 0);
12161 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
12162 "qXfer:btrace", "read-btrace", 0);
12164 /* Keep the old ``set remote Z-packet ...'' working. Each individual
12165 Z sub-packet has its own set and show commands, but users may
12166 have sets to this variable in their .gdbinit files (or in their
12168 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
12169 &remote_Z_packet_detect
, _("\
12170 Set use of remote protocol `Z' packets"), _("\
12171 Show use of remote protocol `Z' packets "), _("\
12172 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
12174 set_remote_protocol_Z_packet_cmd
,
12175 show_remote_protocol_Z_packet_cmd
,
12176 /* FIXME: i18n: Use of remote protocol
12177 `Z' packets is %s. */
12178 &remote_set_cmdlist
, &remote_show_cmdlist
);
12180 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
12181 Manipulate files on the remote system\n\
12182 Transfer files to and from the remote target system."),
12183 &remote_cmdlist
, "remote ",
12184 0 /* allow-unknown */, &cmdlist
);
12186 add_cmd ("put", class_files
, remote_put_command
,
12187 _("Copy a local file to the remote system."),
12190 add_cmd ("get", class_files
, remote_get_command
,
12191 _("Copy a remote file to the local system."),
12194 add_cmd ("delete", class_files
, remote_delete_command
,
12195 _("Delete a remote file."),
12198 remote_exec_file
= xstrdup ("");
12199 add_setshow_string_noescape_cmd ("exec-file", class_files
,
12200 &remote_exec_file
, _("\
12201 Set the remote pathname for \"run\""), _("\
12202 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
12203 &remote_set_cmdlist
, &remote_show_cmdlist
);
12205 add_setshow_boolean_cmd ("range-stepping", class_run
,
12206 &use_range_stepping
, _("\
12207 Enable or disable range stepping."), _("\
12208 Show whether target-assisted range stepping is enabled."), _("\
12209 If on, and the target supports it, when stepping a source line, GDB\n\
12210 tells the target to step the corresponding range of addresses itself instead\n\
12211 of issuing multiple single-steps. This speeds up source level\n\
12212 stepping. If off, GDB always issues single-steps, even if range\n\
12213 stepping is supported by the target. The default is on."),
12214 set_range_stepping
,
12215 show_range_stepping
,
12219 /* Eventually initialize fileio. See fileio.c */
12220 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
12222 /* Take advantage of the fact that the LWP field is not used, to tag
12223 special ptids with it set to != 0. */
12224 magic_null_ptid
= ptid_build (42000, 1, -1);
12225 not_sent_ptid
= ptid_build (42000, 1, -2);
12226 any_thread_ptid
= ptid_build (42000, 1, 0);
12228 target_buf_size
= 2048;
12229 target_buf
= xmalloc (target_buf_size
);