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
;
405 void (*async_client_callback
) (enum inferior_event_type event_type
,
407 void *async_client_context
;
410 /* Private data that we'll store in (struct thread_info)->private. */
411 struct private_thread_info
418 free_private_thread_info (struct private_thread_info
*info
)
424 /* Returns true if the multi-process extensions are in effect. */
426 remote_multi_process_p (struct remote_state
*rs
)
428 return rs
->multi_process_aware
;
431 /* This data could be associated with a target, but we do not always
432 have access to the current target when we need it, so for now it is
433 static. This will be fine for as long as only one target is in use
435 static struct remote_state
*remote_state
;
437 static struct remote_state
*
438 get_remote_state_raw (void)
443 /* Allocate a new struct remote_state with xmalloc, initialize it, and
446 static struct remote_state
*
447 new_remote_state (void)
449 struct remote_state
*result
= XCNEW (struct remote_state
);
451 /* The default buffer size is unimportant; it will be expanded
452 whenever a larger buffer is needed. */
453 result
->buf_size
= 400;
454 result
->buf
= xmalloc (result
->buf_size
);
455 result
->remote_traceframe_number
= -1;
456 result
->last_sent_signal
= GDB_SIGNAL_0
;
461 /* Description of the remote protocol for a given architecture. */
465 long offset
; /* Offset into G packet. */
466 long regnum
; /* GDB's internal register number. */
467 LONGEST pnum
; /* Remote protocol register number. */
468 int in_g_packet
; /* Always part of G packet. */
469 /* long size in bytes; == register_size (target_gdbarch (), regnum);
471 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
475 struct remote_arch_state
477 /* Description of the remote protocol registers. */
478 long sizeof_g_packet
;
480 /* Description of the remote protocol registers indexed by REGNUM
481 (making an array gdbarch_num_regs in size). */
482 struct packet_reg
*regs
;
484 /* This is the size (in chars) of the first response to the ``g''
485 packet. It is used as a heuristic when determining the maximum
486 size of memory-read and memory-write packets. A target will
487 typically only reserve a buffer large enough to hold the ``g''
488 packet. The size does not include packet overhead (headers and
490 long actual_register_packet_size
;
492 /* This is the maximum size (in chars) of a non read/write packet.
493 It is also used as a cap on the size of read/write packets. */
494 long remote_packet_size
;
497 /* Utility: generate error from an incoming stub packet. */
499 trace_error (char *buf
)
502 return; /* not an error msg */
505 case '1': /* malformed packet error */
506 if (*++buf
== '0') /* general case: */
507 error (_("remote.c: error in outgoing packet."));
509 error (_("remote.c: error in outgoing packet at field #%ld."),
510 strtol (buf
, NULL
, 16));
512 error (_("Target returns error code '%s'."), buf
);
516 /* Utility: wait for reply from stub, while accepting "O" packets. */
518 remote_get_noisy_reply (char **buf_p
,
521 do /* Loop on reply from remote stub. */
525 QUIT
; /* Allow user to bail out with ^C. */
526 getpkt (buf_p
, sizeof_buf
, 0);
530 else if (strncmp (buf
, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
533 CORE_ADDR from
, to
, org_to
;
535 int adjusted_size
= 0;
536 volatile struct gdb_exception ex
;
538 p
= buf
+ strlen ("qRelocInsn:");
539 pp
= unpack_varlen_hex (p
, &ul
);
541 error (_("invalid qRelocInsn packet: %s"), buf
);
545 unpack_varlen_hex (p
, &ul
);
550 TRY_CATCH (ex
, RETURN_MASK_ALL
)
552 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
556 adjusted_size
= to
- org_to
;
558 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
561 else if (ex
.reason
< 0 && ex
.error
== MEMORY_ERROR
)
563 /* Propagate memory errors silently back to the target.
564 The stub may have limited the range of addresses we
565 can write to, for example. */
570 /* Something unexpectedly bad happened. Be verbose so
571 we can tell what, and propagate the error back to the
572 stub, so it doesn't get stuck waiting for a
574 exception_fprintf (gdb_stderr
, ex
,
575 _("warning: relocating instruction: "));
579 else if (buf
[0] == 'O' && buf
[1] != 'K')
580 remote_console_output (buf
+ 1); /* 'O' message from stub */
582 return buf
; /* Here's the actual reply. */
587 /* Handle for retreving the remote protocol data from gdbarch. */
588 static struct gdbarch_data
*remote_gdbarch_data_handle
;
590 static struct remote_arch_state
*
591 get_remote_arch_state (void)
593 return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
);
596 /* Fetch the global remote target state. */
598 static struct remote_state
*
599 get_remote_state (void)
601 /* Make sure that the remote architecture state has been
602 initialized, because doing so might reallocate rs->buf. Any
603 function which calls getpkt also needs to be mindful of changes
604 to rs->buf, but this call limits the number of places which run
606 get_remote_arch_state ();
608 return get_remote_state_raw ();
612 compare_pnums (const void *lhs_
, const void *rhs_
)
614 const struct packet_reg
* const *lhs
= lhs_
;
615 const struct packet_reg
* const *rhs
= rhs_
;
617 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
619 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
626 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
628 int regnum
, num_remote_regs
, offset
;
629 struct packet_reg
**remote_regs
;
631 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
633 struct packet_reg
*r
= ®s
[regnum
];
635 if (register_size (gdbarch
, regnum
) == 0)
636 /* Do not try to fetch zero-sized (placeholder) registers. */
639 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
644 /* Define the g/G packet format as the contents of each register
645 with a remote protocol number, in order of ascending protocol
648 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
649 * sizeof (struct packet_reg
*));
650 for (num_remote_regs
= 0, regnum
= 0;
651 regnum
< gdbarch_num_regs (gdbarch
);
653 if (regs
[regnum
].pnum
!= -1)
654 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
656 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
659 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
661 remote_regs
[regnum
]->in_g_packet
= 1;
662 remote_regs
[regnum
]->offset
= offset
;
663 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
669 /* Given the architecture described by GDBARCH, return the remote
670 protocol register's number and the register's offset in the g/G
671 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
672 If the target does not have a mapping for REGNUM, return false,
673 otherwise, return true. */
676 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
677 int *pnum
, int *poffset
)
680 struct packet_reg
*regs
;
681 struct cleanup
*old_chain
;
683 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
685 regs
= xcalloc (gdbarch_num_regs (gdbarch
), sizeof (struct packet_reg
));
686 old_chain
= make_cleanup (xfree
, regs
);
688 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
690 *pnum
= regs
[regnum
].pnum
;
691 *poffset
= regs
[regnum
].offset
;
693 do_cleanups (old_chain
);
699 init_remote_state (struct gdbarch
*gdbarch
)
701 struct remote_state
*rs
= get_remote_state_raw ();
702 struct remote_arch_state
*rsa
;
704 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
706 /* Use the architecture to build a regnum<->pnum table, which will be
707 1:1 unless a feature set specifies otherwise. */
708 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
709 gdbarch_num_regs (gdbarch
),
712 /* Record the maximum possible size of the g packet - it may turn out
714 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
716 /* Default maximum number of characters in a packet body. Many
717 remote stubs have a hardwired buffer size of 400 bytes
718 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
719 as the maximum packet-size to ensure that the packet and an extra
720 NUL character can always fit in the buffer. This stops GDB
721 trashing stubs that try to squeeze an extra NUL into what is
722 already a full buffer (As of 1999-12-04 that was most stubs). */
723 rsa
->remote_packet_size
= 400 - 1;
725 /* This one is filled in when a ``g'' packet is received. */
726 rsa
->actual_register_packet_size
= 0;
728 /* Should rsa->sizeof_g_packet needs more space than the
729 default, adjust the size accordingly. Remember that each byte is
730 encoded as two characters. 32 is the overhead for the packet
731 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
732 (``$NN:G...#NN'') is a better guess, the below has been padded a
734 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
735 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
737 /* Make sure that the packet buffer is plenty big enough for
738 this architecture. */
739 if (rs
->buf_size
< rsa
->remote_packet_size
)
741 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
742 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
748 /* Return the current allowed size of a remote packet. This is
749 inferred from the current architecture, and should be used to
750 limit the length of outgoing packets. */
752 get_remote_packet_size (void)
754 struct remote_state
*rs
= get_remote_state ();
755 struct remote_arch_state
*rsa
= get_remote_arch_state ();
757 if (rs
->explicit_packet_size
)
758 return rs
->explicit_packet_size
;
760 return rsa
->remote_packet_size
;
763 static struct packet_reg
*
764 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
766 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
770 struct packet_reg
*r
= &rsa
->regs
[regnum
];
772 gdb_assert (r
->regnum
== regnum
);
777 static struct packet_reg
*
778 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
782 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
784 struct packet_reg
*r
= &rsa
->regs
[i
];
792 /* FIXME: graces/2002-08-08: These variables should eventually be
793 bound to an instance of the target object (as in gdbarch-tdep()),
794 when such a thing exists. */
796 /* This is set to the data address of the access causing the target
797 to stop for a watchpoint. */
798 static CORE_ADDR remote_watch_data_address
;
800 /* This is non-zero if target stopped for a watchpoint. */
801 static int remote_stopped_by_watchpoint_p
;
803 static struct target_ops remote_ops
;
805 static struct target_ops extended_remote_ops
;
807 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
808 ``forever'' still use the normal timeout mechanism. This is
809 currently used by the ASYNC code to guarentee that target reads
810 during the initial connect always time-out. Once getpkt has been
811 modified to return a timeout indication and, in turn
812 remote_wait()/wait_for_inferior() have gained a timeout parameter
814 static int wait_forever_enabled_p
= 1;
816 /* Allow the user to specify what sequence to send to the remote
817 when he requests a program interruption: Although ^C is usually
818 what remote systems expect (this is the default, here), it is
819 sometimes preferable to send a break. On other systems such
820 as the Linux kernel, a break followed by g, which is Magic SysRq g
821 is required in order to interrupt the execution. */
822 const char interrupt_sequence_control_c
[] = "Ctrl-C";
823 const char interrupt_sequence_break
[] = "BREAK";
824 const char interrupt_sequence_break_g
[] = "BREAK-g";
825 static const char *const interrupt_sequence_modes
[] =
827 interrupt_sequence_control_c
,
828 interrupt_sequence_break
,
829 interrupt_sequence_break_g
,
832 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
835 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
836 struct cmd_list_element
*c
,
839 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
840 fprintf_filtered (file
,
841 _("Send the ASCII ETX character (Ctrl-c) "
842 "to the remote target to interrupt the "
843 "execution of the program.\n"));
844 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
845 fprintf_filtered (file
,
846 _("send a break signal to the remote target "
847 "to interrupt the execution of the program.\n"));
848 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
849 fprintf_filtered (file
,
850 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
851 "the remote target to interrupt the execution "
852 "of Linux kernel.\n"));
854 internal_error (__FILE__
, __LINE__
,
855 _("Invalid value for interrupt_sequence_mode: %s."),
856 interrupt_sequence_mode
);
859 /* This boolean variable specifies whether interrupt_sequence is sent
860 to the remote target when gdb connects to it.
861 This is mostly needed when you debug the Linux kernel: The Linux kernel
862 expects BREAK g which is Magic SysRq g for connecting gdb. */
863 static int interrupt_on_connect
= 0;
865 /* This variable is used to implement the "set/show remotebreak" commands.
866 Since these commands are now deprecated in favor of "set/show remote
867 interrupt-sequence", it no longer has any effect on the code. */
868 static int remote_break
;
871 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
874 interrupt_sequence_mode
= interrupt_sequence_break
;
876 interrupt_sequence_mode
= interrupt_sequence_control_c
;
880 show_remotebreak (struct ui_file
*file
, int from_tty
,
881 struct cmd_list_element
*c
,
886 /* This variable sets the number of bits in an address that are to be
887 sent in a memory ("M" or "m") packet. Normally, after stripping
888 leading zeros, the entire address would be sent. This variable
889 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
890 initial implementation of remote.c restricted the address sent in
891 memory packets to ``host::sizeof long'' bytes - (typically 32
892 bits). Consequently, for 64 bit targets, the upper 32 bits of an
893 address was never sent. Since fixing this bug may cause a break in
894 some remote targets this variable is principly provided to
895 facilitate backward compatibility. */
897 static unsigned int remote_address_size
;
899 /* Temporary to track who currently owns the terminal. See
900 remote_terminal_* for more details. */
902 static int remote_async_terminal_ours_p
;
904 /* The executable file to use for "run" on the remote side. */
906 static char *remote_exec_file
= "";
909 /* User configurable variables for the number of characters in a
910 memory read/write packet. MIN (rsa->remote_packet_size,
911 rsa->sizeof_g_packet) is the default. Some targets need smaller
912 values (fifo overruns, et.al.) and some users need larger values
913 (speed up transfers). The variables ``preferred_*'' (the user
914 request), ``current_*'' (what was actually set) and ``forced_*''
915 (Positive - a soft limit, negative - a hard limit). */
917 struct memory_packet_config
924 /* Compute the current size of a read/write packet. Since this makes
925 use of ``actual_register_packet_size'' the computation is dynamic. */
928 get_memory_packet_size (struct memory_packet_config
*config
)
930 struct remote_state
*rs
= get_remote_state ();
931 struct remote_arch_state
*rsa
= get_remote_arch_state ();
933 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
934 law?) that some hosts don't cope very well with large alloca()
935 calls. Eventually the alloca() code will be replaced by calls to
936 xmalloc() and make_cleanups() allowing this restriction to either
937 be lifted or removed. */
938 #ifndef MAX_REMOTE_PACKET_SIZE
939 #define MAX_REMOTE_PACKET_SIZE 16384
941 /* NOTE: 20 ensures we can write at least one byte. */
942 #ifndef MIN_REMOTE_PACKET_SIZE
943 #define MIN_REMOTE_PACKET_SIZE 20
948 if (config
->size
<= 0)
949 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
951 what_they_get
= config
->size
;
955 what_they_get
= get_remote_packet_size ();
956 /* Limit the packet to the size specified by the user. */
958 && what_they_get
> config
->size
)
959 what_they_get
= config
->size
;
961 /* Limit it to the size of the targets ``g'' response unless we have
962 permission from the stub to use a larger packet size. */
963 if (rs
->explicit_packet_size
== 0
964 && rsa
->actual_register_packet_size
> 0
965 && what_they_get
> rsa
->actual_register_packet_size
)
966 what_they_get
= rsa
->actual_register_packet_size
;
968 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
969 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
970 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
971 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
973 /* Make sure there is room in the global buffer for this packet
974 (including its trailing NUL byte). */
975 if (rs
->buf_size
< what_they_get
+ 1)
977 rs
->buf_size
= 2 * what_they_get
;
978 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
981 return what_they_get
;
984 /* Update the size of a read/write packet. If they user wants
985 something really big then do a sanity check. */
988 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
990 int fixed_p
= config
->fixed_p
;
991 long size
= config
->size
;
994 error (_("Argument required (integer, `fixed' or `limited')."));
995 else if (strcmp (args
, "hard") == 0
996 || strcmp (args
, "fixed") == 0)
998 else if (strcmp (args
, "soft") == 0
999 || strcmp (args
, "limit") == 0)
1005 size
= strtoul (args
, &end
, 0);
1007 error (_("Invalid %s (bad syntax)."), config
->name
);
1009 /* Instead of explicitly capping the size of a packet to
1010 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
1011 instead allowed to set the size to something arbitrarily
1013 if (size
> MAX_REMOTE_PACKET_SIZE
)
1014 error (_("Invalid %s (too large)."), config
->name
);
1018 if (fixed_p
&& !config
->fixed_p
)
1020 if (! query (_("The target may not be able to correctly handle a %s\n"
1021 "of %ld bytes. Change the packet size? "),
1022 config
->name
, size
))
1023 error (_("Packet size not changed."));
1025 /* Update the config. */
1026 config
->fixed_p
= fixed_p
;
1027 config
->size
= size
;
1031 show_memory_packet_size (struct memory_packet_config
*config
)
1033 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
1034 if (config
->fixed_p
)
1035 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
1036 get_memory_packet_size (config
));
1038 printf_filtered (_("Packets are limited to %ld bytes.\n"),
1039 get_memory_packet_size (config
));
1042 static struct memory_packet_config memory_write_packet_config
=
1044 "memory-write-packet-size",
1048 set_memory_write_packet_size (char *args
, int from_tty
)
1050 set_memory_packet_size (args
, &memory_write_packet_config
);
1054 show_memory_write_packet_size (char *args
, int from_tty
)
1056 show_memory_packet_size (&memory_write_packet_config
);
1060 get_memory_write_packet_size (void)
1062 return get_memory_packet_size (&memory_write_packet_config
);
1065 static struct memory_packet_config memory_read_packet_config
=
1067 "memory-read-packet-size",
1071 set_memory_read_packet_size (char *args
, int from_tty
)
1073 set_memory_packet_size (args
, &memory_read_packet_config
);
1077 show_memory_read_packet_size (char *args
, int from_tty
)
1079 show_memory_packet_size (&memory_read_packet_config
);
1083 get_memory_read_packet_size (void)
1085 long size
= get_memory_packet_size (&memory_read_packet_config
);
1087 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1088 extra buffer size argument before the memory read size can be
1089 increased beyond this. */
1090 if (size
> get_remote_packet_size ())
1091 size
= get_remote_packet_size ();
1096 /* Generic configuration support for packets the stub optionally
1097 supports. Allows the user to specify the use of the packet as well
1098 as allowing GDB to auto-detect support in the remote stub. */
1102 PACKET_SUPPORT_UNKNOWN
= 0,
1107 struct packet_config
1111 enum auto_boolean detect
;
1112 enum packet_support support
;
1115 /* Analyze a packet's return value and update the packet config
1126 update_packet_config (struct packet_config
*config
)
1128 switch (config
->detect
)
1130 case AUTO_BOOLEAN_TRUE
:
1131 config
->support
= PACKET_ENABLE
;
1133 case AUTO_BOOLEAN_FALSE
:
1134 config
->support
= PACKET_DISABLE
;
1136 case AUTO_BOOLEAN_AUTO
:
1137 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1143 show_packet_config_cmd (struct packet_config
*config
)
1145 char *support
= "internal-error";
1147 switch (config
->support
)
1150 support
= "enabled";
1152 case PACKET_DISABLE
:
1153 support
= "disabled";
1155 case PACKET_SUPPORT_UNKNOWN
:
1156 support
= "unknown";
1159 switch (config
->detect
)
1161 case AUTO_BOOLEAN_AUTO
:
1162 printf_filtered (_("Support for the `%s' packet "
1163 "is auto-detected, currently %s.\n"),
1164 config
->name
, support
);
1166 case AUTO_BOOLEAN_TRUE
:
1167 case AUTO_BOOLEAN_FALSE
:
1168 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1169 config
->name
, support
);
1175 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1176 const char *title
, int legacy
)
1182 config
->name
= name
;
1183 config
->title
= title
;
1184 config
->detect
= AUTO_BOOLEAN_AUTO
;
1185 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1186 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1188 show_doc
= xstrprintf ("Show current use of remote "
1189 "protocol `%s' (%s) packet",
1191 /* set/show TITLE-packet {auto,on,off} */
1192 cmd_name
= xstrprintf ("%s-packet", title
);
1193 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1194 &config
->detect
, set_doc
,
1195 show_doc
, NULL
, /* help_doc */
1196 set_remote_protocol_packet_cmd
,
1197 show_remote_protocol_packet_cmd
,
1198 &remote_set_cmdlist
, &remote_show_cmdlist
);
1199 /* The command code copies the documentation strings. */
1202 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1207 legacy_name
= xstrprintf ("%s-packet", name
);
1208 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1209 &remote_set_cmdlist
);
1210 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1211 &remote_show_cmdlist
);
1215 static enum packet_result
1216 packet_check_result (const char *buf
)
1220 /* The stub recognized the packet request. Check that the
1221 operation succeeded. */
1223 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1225 /* "Enn" - definitly an error. */
1226 return PACKET_ERROR
;
1228 /* Always treat "E." as an error. This will be used for
1229 more verbose error messages, such as E.memtypes. */
1230 if (buf
[0] == 'E' && buf
[1] == '.')
1231 return PACKET_ERROR
;
1233 /* The packet may or may not be OK. Just assume it is. */
1237 /* The stub does not support the packet. */
1238 return PACKET_UNKNOWN
;
1241 static enum packet_result
1242 packet_ok (const char *buf
, struct packet_config
*config
)
1244 enum packet_result result
;
1246 result
= packet_check_result (buf
);
1251 /* The stub recognized the packet request. */
1252 switch (config
->support
)
1254 case PACKET_SUPPORT_UNKNOWN
:
1256 fprintf_unfiltered (gdb_stdlog
,
1257 "Packet %s (%s) is supported\n",
1258 config
->name
, config
->title
);
1259 config
->support
= PACKET_ENABLE
;
1261 case PACKET_DISABLE
:
1262 internal_error (__FILE__
, __LINE__
,
1263 _("packet_ok: attempt to use a disabled packet"));
1269 case PACKET_UNKNOWN
:
1270 /* The stub does not support the packet. */
1271 switch (config
->support
)
1274 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1275 /* If the stub previously indicated that the packet was
1276 supported then there is a protocol error.. */
1277 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1278 config
->name
, config
->title
);
1280 /* The user set it wrong. */
1281 error (_("Enabled packet %s (%s) not recognized by stub"),
1282 config
->name
, config
->title
);
1284 case PACKET_SUPPORT_UNKNOWN
:
1286 fprintf_unfiltered (gdb_stdlog
,
1287 "Packet %s (%s) is NOT supported\n",
1288 config
->name
, config
->title
);
1289 config
->support
= PACKET_DISABLE
;
1291 case PACKET_DISABLE
:
1313 PACKET_vFile_pwrite
,
1315 PACKET_vFile_unlink
,
1316 PACKET_vFile_readlink
,
1318 PACKET_qXfer_features
,
1319 PACKET_qXfer_libraries
,
1320 PACKET_qXfer_libraries_svr4
,
1321 PACKET_qXfer_memory_map
,
1322 PACKET_qXfer_spu_read
,
1323 PACKET_qXfer_spu_write
,
1324 PACKET_qXfer_osdata
,
1325 PACKET_qXfer_threads
,
1326 PACKET_qXfer_statictrace_read
,
1327 PACKET_qXfer_traceframe_info
,
1333 PACKET_QPassSignals
,
1334 PACKET_QProgramSignals
,
1335 PACKET_qSearch_memory
,
1338 PACKET_QStartNoAckMode
,
1340 PACKET_qXfer_siginfo_read
,
1341 PACKET_qXfer_siginfo_write
,
1343 PACKET_ConditionalTracepoints
,
1344 PACKET_ConditionalBreakpoints
,
1345 PACKET_BreakpointCommands
,
1346 PACKET_FastTracepoints
,
1347 PACKET_StaticTracepoints
,
1348 PACKET_InstallInTrace
,
1351 PACKET_TracepointSource
,
1354 PACKET_QDisableRandomization
,
1356 PACKET_QTBuffer_size
,
1359 PACKET_qXfer_btrace
,
1363 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1366 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1367 struct cmd_list_element
*c
)
1369 struct packet_config
*packet
;
1371 for (packet
= remote_protocol_packets
;
1372 packet
< &remote_protocol_packets
[PACKET_MAX
];
1375 if (&packet
->detect
== c
->var
)
1377 update_packet_config (packet
);
1381 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1386 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1387 struct cmd_list_element
*c
,
1390 struct packet_config
*packet
;
1392 for (packet
= remote_protocol_packets
;
1393 packet
< &remote_protocol_packets
[PACKET_MAX
];
1396 if (&packet
->detect
== c
->var
)
1398 show_packet_config_cmd (packet
);
1402 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1406 /* Should we try one of the 'Z' requests? */
1410 Z_PACKET_SOFTWARE_BP
,
1411 Z_PACKET_HARDWARE_BP
,
1418 /* For compatibility with older distributions. Provide a ``set remote
1419 Z-packet ...'' command that updates all the Z packet types. */
1421 static enum auto_boolean remote_Z_packet_detect
;
1424 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1425 struct cmd_list_element
*c
)
1429 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1431 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1432 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1437 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1438 struct cmd_list_element
*c
,
1443 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1445 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1449 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1450 static struct async_signal_handler
*async_sigint_remote_twice_token
;
1451 static struct async_signal_handler
*async_sigint_remote_token
;
1454 /* Asynchronous signal handle registered as event loop source for
1455 when we have pending events ready to be passed to the core. */
1457 static struct async_event_handler
*remote_async_inferior_event_token
;
1461 static ptid_t magic_null_ptid
;
1462 static ptid_t not_sent_ptid
;
1463 static ptid_t any_thread_ptid
;
1465 /* Find out if the stub attached to PID (and hence GDB should offer to
1466 detach instead of killing it when bailing out). */
1469 remote_query_attached (int pid
)
1471 struct remote_state
*rs
= get_remote_state ();
1472 size_t size
= get_remote_packet_size ();
1474 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1477 if (remote_multi_process_p (rs
))
1478 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1480 xsnprintf (rs
->buf
, size
, "qAttached");
1483 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1485 switch (packet_ok (rs
->buf
,
1486 &remote_protocol_packets
[PACKET_qAttached
]))
1489 if (strcmp (rs
->buf
, "1") == 0)
1493 warning (_("Remote failure reply: %s"), rs
->buf
);
1495 case PACKET_UNKNOWN
:
1502 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1503 has been invented by GDB, instead of reported by the target. Since
1504 we can be connected to a remote system before before knowing about
1505 any inferior, mark the target with execution when we find the first
1506 inferior. If ATTACHED is 1, then we had just attached to this
1507 inferior. If it is 0, then we just created this inferior. If it
1508 is -1, then try querying the remote stub to find out if it had
1509 attached to the inferior or not. */
1511 static struct inferior
*
1512 remote_add_inferior (int fake_pid_p
, int pid
, int attached
)
1514 struct inferior
*inf
;
1516 /* Check whether this process we're learning about is to be
1517 considered attached, or if is to be considered to have been
1518 spawned by the stub. */
1520 attached
= remote_query_attached (pid
);
1522 if (gdbarch_has_global_solist (target_gdbarch ()))
1524 /* If the target shares code across all inferiors, then every
1525 attach adds a new inferior. */
1526 inf
= add_inferior (pid
);
1528 /* ... and every inferior is bound to the same program space.
1529 However, each inferior may still have its own address
1531 inf
->aspace
= maybe_new_address_space ();
1532 inf
->pspace
= current_program_space
;
1536 /* In the traditional debugging scenario, there's a 1-1 match
1537 between program/address spaces. We simply bind the inferior
1538 to the program space's address space. */
1539 inf
= current_inferior ();
1540 inferior_appeared (inf
, pid
);
1543 inf
->attach_flag
= attached
;
1544 inf
->fake_pid_p
= fake_pid_p
;
1549 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1550 according to RUNNING. */
1553 remote_add_thread (ptid_t ptid
, int running
)
1557 set_executing (ptid
, running
);
1558 set_running (ptid
, running
);
1561 /* Come here when we learn about a thread id from the remote target.
1562 It may be the first time we hear about such thread, so take the
1563 opportunity to add it to GDB's thread list. In case this is the
1564 first time we're noticing its corresponding inferior, add it to
1565 GDB's inferior list as well. */
1568 remote_notice_new_inferior (ptid_t currthread
, int running
)
1570 /* If this is a new thread, add it to GDB's thread list.
1571 If we leave it up to WFI to do this, bad things will happen. */
1573 if (in_thread_list (currthread
) && is_exited (currthread
))
1575 /* We're seeing an event on a thread id we knew had exited.
1576 This has to be a new thread reusing the old id. Add it. */
1577 remote_add_thread (currthread
, running
);
1581 if (!in_thread_list (currthread
))
1583 struct inferior
*inf
= NULL
;
1584 int pid
= ptid_get_pid (currthread
);
1586 if (ptid_is_pid (inferior_ptid
)
1587 && pid
== ptid_get_pid (inferior_ptid
))
1589 /* inferior_ptid has no thread member yet. This can happen
1590 with the vAttach -> remote_wait,"TAAthread:" path if the
1591 stub doesn't support qC. This is the first stop reported
1592 after an attach, so this is the main thread. Update the
1593 ptid in the thread list. */
1594 if (in_thread_list (pid_to_ptid (pid
)))
1595 thread_change_ptid (inferior_ptid
, currthread
);
1598 remote_add_thread (currthread
, running
);
1599 inferior_ptid
= currthread
;
1604 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1606 /* inferior_ptid is not set yet. This can happen with the
1607 vRun -> remote_wait,"TAAthread:" path if the stub
1608 doesn't support qC. This is the first stop reported
1609 after an attach, so this is the main thread. Update the
1610 ptid in the thread list. */
1611 thread_change_ptid (inferior_ptid
, currthread
);
1615 /* When connecting to a target remote, or to a target
1616 extended-remote which already was debugging an inferior, we
1617 may not know about it yet. Add it before adding its child
1618 thread, so notifications are emitted in a sensible order. */
1619 if (!in_inferior_list (ptid_get_pid (currthread
)))
1621 struct remote_state
*rs
= get_remote_state ();
1622 int fake_pid_p
= !remote_multi_process_p (rs
);
1624 inf
= remote_add_inferior (fake_pid_p
,
1625 ptid_get_pid (currthread
), -1);
1628 /* This is really a new thread. Add it. */
1629 remote_add_thread (currthread
, running
);
1631 /* If we found a new inferior, let the common code do whatever
1632 it needs to with it (e.g., read shared libraries, insert
1635 notice_new_inferior (currthread
, running
, 0);
1639 /* Return the private thread data, creating it if necessary. */
1641 static struct private_thread_info
*
1642 demand_private_info (ptid_t ptid
)
1644 struct thread_info
*info
= find_thread_ptid (ptid
);
1650 info
->private = xmalloc (sizeof (*(info
->private)));
1651 info
->private_dtor
= free_private_thread_info
;
1652 info
->private->core
= -1;
1653 info
->private->extra
= 0;
1656 return info
->private;
1659 /* Call this function as a result of
1660 1) A halt indication (T packet) containing a thread id
1661 2) A direct query of currthread
1662 3) Successful execution of set thread */
1665 record_currthread (struct remote_state
*rs
, ptid_t currthread
)
1667 rs
->general_thread
= currthread
;
1670 /* If 'QPassSignals' is supported, tell the remote stub what signals
1671 it can simply pass through to the inferior without reporting. */
1674 remote_pass_signals (int numsigs
, unsigned char *pass_signals
)
1676 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1678 char *pass_packet
, *p
;
1680 struct remote_state
*rs
= get_remote_state ();
1682 gdb_assert (numsigs
< 256);
1683 for (i
= 0; i
< numsigs
; i
++)
1685 if (pass_signals
[i
])
1688 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1689 strcpy (pass_packet
, "QPassSignals:");
1690 p
= pass_packet
+ strlen (pass_packet
);
1691 for (i
= 0; i
< numsigs
; i
++)
1693 if (pass_signals
[i
])
1696 *p
++ = tohex (i
>> 4);
1697 *p
++ = tohex (i
& 15);
1706 if (!rs
->last_pass_packet
|| strcmp (rs
->last_pass_packet
, pass_packet
))
1708 char *buf
= rs
->buf
;
1710 putpkt (pass_packet
);
1711 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1712 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1713 if (rs
->last_pass_packet
)
1714 xfree (rs
->last_pass_packet
);
1715 rs
->last_pass_packet
= pass_packet
;
1718 xfree (pass_packet
);
1722 /* If 'QProgramSignals' is supported, tell the remote stub what
1723 signals it should pass through to the inferior when detaching. */
1726 remote_program_signals (int numsigs
, unsigned char *signals
)
1728 if (remote_protocol_packets
[PACKET_QProgramSignals
].support
!= PACKET_DISABLE
)
1732 struct remote_state
*rs
= get_remote_state ();
1734 gdb_assert (numsigs
< 256);
1735 for (i
= 0; i
< numsigs
; i
++)
1740 packet
= xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
1741 strcpy (packet
, "QProgramSignals:");
1742 p
= packet
+ strlen (packet
);
1743 for (i
= 0; i
< numsigs
; i
++)
1745 if (signal_pass_state (i
))
1748 *p
++ = tohex (i
>> 4);
1749 *p
++ = tohex (i
& 15);
1758 if (!rs
->last_program_signals_packet
1759 || strcmp (rs
->last_program_signals_packet
, packet
) != 0)
1761 char *buf
= rs
->buf
;
1764 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1765 packet_ok (buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
1766 xfree (rs
->last_program_signals_packet
);
1767 rs
->last_program_signals_packet
= packet
;
1774 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1775 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1776 thread. If GEN is set, set the general thread, if not, then set
1777 the step/continue thread. */
1779 set_thread (struct ptid ptid
, int gen
)
1781 struct remote_state
*rs
= get_remote_state ();
1782 ptid_t state
= gen
? rs
->general_thread
: rs
->continue_thread
;
1783 char *buf
= rs
->buf
;
1784 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1786 if (ptid_equal (state
, ptid
))
1790 *buf
++ = gen
? 'g' : 'c';
1791 if (ptid_equal (ptid
, magic_null_ptid
))
1792 xsnprintf (buf
, endbuf
- buf
, "0");
1793 else if (ptid_equal (ptid
, any_thread_ptid
))
1794 xsnprintf (buf
, endbuf
- buf
, "0");
1795 else if (ptid_equal (ptid
, minus_one_ptid
))
1796 xsnprintf (buf
, endbuf
- buf
, "-1");
1798 write_ptid (buf
, endbuf
, ptid
);
1800 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1802 rs
->general_thread
= ptid
;
1804 rs
->continue_thread
= ptid
;
1808 set_general_thread (struct ptid ptid
)
1810 set_thread (ptid
, 1);
1814 set_continue_thread (struct ptid ptid
)
1816 set_thread (ptid
, 0);
1819 /* Change the remote current process. Which thread within the process
1820 ends up selected isn't important, as long as it is the same process
1821 as what INFERIOR_PTID points to.
1823 This comes from that fact that there is no explicit notion of
1824 "selected process" in the protocol. The selected process for
1825 general operations is the process the selected general thread
1829 set_general_process (void)
1831 struct remote_state
*rs
= get_remote_state ();
1833 /* If the remote can't handle multiple processes, don't bother. */
1834 if (!rs
->extended
|| !remote_multi_process_p (rs
))
1837 /* We only need to change the remote current thread if it's pointing
1838 at some other process. */
1839 if (ptid_get_pid (rs
->general_thread
) != ptid_get_pid (inferior_ptid
))
1840 set_general_thread (inferior_ptid
);
1844 /* Return nonzero if the thread PTID is still alive on the remote
1848 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1850 struct remote_state
*rs
= get_remote_state ();
1853 if (ptid_equal (ptid
, magic_null_ptid
))
1854 /* The main thread is always alive. */
1857 if (ptid_get_pid (ptid
) != 0 && ptid_get_tid (ptid
) == 0)
1858 /* The main thread is always alive. This can happen after a
1859 vAttach, if the remote side doesn't support
1864 endp
= rs
->buf
+ get_remote_packet_size ();
1867 write_ptid (p
, endp
, ptid
);
1870 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1871 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1874 /* About these extended threadlist and threadinfo packets. They are
1875 variable length packets but, the fields within them are often fixed
1876 length. They are redundent enough to send over UDP as is the
1877 remote protocol in general. There is a matching unit test module
1880 #define OPAQUETHREADBYTES 8
1882 /* a 64 bit opaque identifier */
1883 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1885 /* WARNING: This threadref data structure comes from the remote O.S.,
1886 libstub protocol encoding, and remote.c. It is not particularly
1889 /* Right now, the internal structure is int. We want it to be bigger.
1890 Plan to fix this. */
1892 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1894 /* gdb_ext_thread_info is an internal GDB data structure which is
1895 equivalent to the reply of the remote threadinfo packet. */
1897 struct gdb_ext_thread_info
1899 threadref threadid
; /* External form of thread reference. */
1900 int active
; /* Has state interesting to GDB?
1902 char display
[256]; /* Brief state display, name,
1903 blocked/suspended. */
1904 char shortname
[32]; /* To be used to name threads. */
1905 char more_display
[256]; /* Long info, statistics, queue depth,
1909 /* The volume of remote transfers can be limited by submitting
1910 a mask containing bits specifying the desired information.
1911 Use a union of these values as the 'selection' parameter to
1912 get_thread_info. FIXME: Make these TAG names more thread specific. */
1914 #define TAG_THREADID 1
1915 #define TAG_EXISTS 2
1916 #define TAG_DISPLAY 4
1917 #define TAG_THREADNAME 8
1918 #define TAG_MOREDISPLAY 16
1920 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1922 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1924 static char *unpack_nibble (char *buf
, int *val
);
1926 static char *pack_nibble (char *buf
, int nibble
);
1928 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1930 static char *unpack_byte (char *buf
, int *value
);
1932 static char *pack_int (char *buf
, int value
);
1934 static char *unpack_int (char *buf
, int *value
);
1936 static char *unpack_string (char *src
, char *dest
, int length
);
1938 static char *pack_threadid (char *pkt
, threadref
*id
);
1940 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1942 void int_to_threadref (threadref
*id
, int value
);
1944 static int threadref_to_int (threadref
*ref
);
1946 static void copy_threadref (threadref
*dest
, threadref
*src
);
1948 static int threadmatch (threadref
*dest
, threadref
*src
);
1950 static char *pack_threadinfo_request (char *pkt
, int mode
,
1953 static int remote_unpack_thread_info_response (char *pkt
,
1954 threadref
*expectedref
,
1955 struct gdb_ext_thread_info
1959 static int remote_get_threadinfo (threadref
*threadid
,
1960 int fieldset
, /*TAG mask */
1961 struct gdb_ext_thread_info
*info
);
1963 static char *pack_threadlist_request (char *pkt
, int startflag
,
1965 threadref
*nextthread
);
1967 static int parse_threadlist_response (char *pkt
,
1969 threadref
*original_echo
,
1970 threadref
*resultlist
,
1973 static int remote_get_threadlist (int startflag
,
1974 threadref
*nextthread
,
1978 threadref
*threadlist
);
1980 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1982 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1983 void *context
, int looplimit
);
1985 static int remote_newthread_step (threadref
*ref
, void *context
);
1988 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1989 buffer we're allowed to write to. Returns
1990 BUF+CHARACTERS_WRITTEN. */
1993 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1996 struct remote_state
*rs
= get_remote_state ();
1998 if (remote_multi_process_p (rs
))
2000 pid
= ptid_get_pid (ptid
);
2002 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
2004 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
2006 tid
= ptid_get_tid (ptid
);
2008 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
2010 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
2015 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
2016 passed the last parsed char. Returns null_ptid on error. */
2019 read_ptid (char *buf
, char **obuf
)
2023 ULONGEST pid
= 0, tid
= 0;
2027 /* Multi-process ptid. */
2028 pp
= unpack_varlen_hex (p
+ 1, &pid
);
2030 error (_("invalid remote ptid: %s"), p
);
2033 pp
= unpack_varlen_hex (p
+ 1, &tid
);
2036 return ptid_build (pid
, 0, tid
);
2039 /* No multi-process. Just a tid. */
2040 pp
= unpack_varlen_hex (p
, &tid
);
2042 /* Since the stub is not sending a process id, then default to
2043 what's in inferior_ptid, unless it's null at this point. If so,
2044 then since there's no way to know the pid of the reported
2045 threads, use the magic number. */
2046 if (ptid_equal (inferior_ptid
, null_ptid
))
2047 pid
= ptid_get_pid (magic_null_ptid
);
2049 pid
= ptid_get_pid (inferior_ptid
);
2053 return ptid_build (pid
, 0, tid
);
2056 /* Encode 64 bits in 16 chars of hex. */
2058 static const char hexchars
[] = "0123456789abcdef";
2061 ishex (int ch
, int *val
)
2063 if ((ch
>= 'a') && (ch
<= 'f'))
2065 *val
= ch
- 'a' + 10;
2068 if ((ch
>= 'A') && (ch
<= 'F'))
2070 *val
= ch
- 'A' + 10;
2073 if ((ch
>= '0') && (ch
<= '9'))
2084 if (ch
>= 'a' && ch
<= 'f')
2085 return ch
- 'a' + 10;
2086 if (ch
>= '0' && ch
<= '9')
2088 if (ch
>= 'A' && ch
<= 'F')
2089 return ch
- 'A' + 10;
2094 stub_unpack_int (char *buff
, int fieldlength
)
2101 nibble
= stubhex (*buff
++);
2105 retval
= retval
<< 4;
2111 unpack_varlen_hex (char *buff
, /* packet to parse */
2115 ULONGEST retval
= 0;
2117 while (ishex (*buff
, &nibble
))
2120 retval
= retval
<< 4;
2121 retval
|= nibble
& 0x0f;
2128 unpack_nibble (char *buf
, int *val
)
2130 *val
= fromhex (*buf
++);
2135 pack_nibble (char *buf
, int nibble
)
2137 *buf
++ = hexchars
[(nibble
& 0x0f)];
2142 pack_hex_byte (char *pkt
, int byte
)
2144 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
2145 *pkt
++ = hexchars
[(byte
& 0xf)];
2150 unpack_byte (char *buf
, int *value
)
2152 *value
= stub_unpack_int (buf
, 2);
2157 pack_int (char *buf
, int value
)
2159 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2160 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2161 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2162 buf
= pack_hex_byte (buf
, (value
& 0xff));
2167 unpack_int (char *buf
, int *value
)
2169 *value
= stub_unpack_int (buf
, 8);
2173 #if 0 /* Currently unused, uncomment when needed. */
2174 static char *pack_string (char *pkt
, char *string
);
2177 pack_string (char *pkt
, char *string
)
2182 len
= strlen (string
);
2184 len
= 200; /* Bigger than most GDB packets, junk??? */
2185 pkt
= pack_hex_byte (pkt
, len
);
2189 if ((ch
== '\0') || (ch
== '#'))
2190 ch
= '*'; /* Protect encapsulation. */
2195 #endif /* 0 (unused) */
2198 unpack_string (char *src
, char *dest
, int length
)
2207 pack_threadid (char *pkt
, threadref
*id
)
2210 unsigned char *altid
;
2212 altid
= (unsigned char *) id
;
2213 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2215 pkt
= pack_hex_byte (pkt
, *altid
++);
2221 unpack_threadid (char *inbuf
, threadref
*id
)
2224 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2227 altref
= (char *) id
;
2229 while (inbuf
< limit
)
2231 x
= stubhex (*inbuf
++);
2232 y
= stubhex (*inbuf
++);
2233 *altref
++ = (x
<< 4) | y
;
2238 /* Externally, threadrefs are 64 bits but internally, they are still
2239 ints. This is due to a mismatch of specifications. We would like
2240 to use 64bit thread references internally. This is an adapter
2244 int_to_threadref (threadref
*id
, int value
)
2246 unsigned char *scan
;
2248 scan
= (unsigned char *) id
;
2254 *scan
++ = (value
>> 24) & 0xff;
2255 *scan
++ = (value
>> 16) & 0xff;
2256 *scan
++ = (value
>> 8) & 0xff;
2257 *scan
++ = (value
& 0xff);
2261 threadref_to_int (threadref
*ref
)
2264 unsigned char *scan
;
2270 value
= (value
<< 8) | ((*scan
++) & 0xff);
2275 copy_threadref (threadref
*dest
, threadref
*src
)
2278 unsigned char *csrc
, *cdest
;
2280 csrc
= (unsigned char *) src
;
2281 cdest
= (unsigned char *) dest
;
2288 threadmatch (threadref
*dest
, threadref
*src
)
2290 /* Things are broken right now, so just assume we got a match. */
2292 unsigned char *srcp
, *destp
;
2294 srcp
= (char *) src
;
2295 destp
= (char *) dest
;
2299 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2306 threadid:1, # always request threadid
2313 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2316 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2318 *pkt
++ = 'q'; /* Info Query */
2319 *pkt
++ = 'P'; /* process or thread info */
2320 pkt
= pack_int (pkt
, mode
); /* mode */
2321 pkt
= pack_threadid (pkt
, id
); /* threadid */
2322 *pkt
= '\0'; /* terminate */
2326 /* These values tag the fields in a thread info response packet. */
2327 /* Tagging the fields allows us to request specific fields and to
2328 add more fields as time goes by. */
2330 #define TAG_THREADID 1 /* Echo the thread identifier. */
2331 #define TAG_EXISTS 2 /* Is this process defined enough to
2332 fetch registers and its stack? */
2333 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2334 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2335 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2339 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2340 struct gdb_ext_thread_info
*info
)
2342 struct remote_state
*rs
= get_remote_state ();
2346 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2349 /* info->threadid = 0; FIXME: implement zero_threadref. */
2351 info
->display
[0] = '\0';
2352 info
->shortname
[0] = '\0';
2353 info
->more_display
[0] = '\0';
2355 /* Assume the characters indicating the packet type have been
2357 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2358 pkt
= unpack_threadid (pkt
, &ref
);
2361 warning (_("Incomplete response to threadinfo request."));
2362 if (!threadmatch (&ref
, expectedref
))
2363 { /* This is an answer to a different request. */
2364 warning (_("ERROR RMT Thread info mismatch."));
2367 copy_threadref (&info
->threadid
, &ref
);
2369 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2371 /* Packets are terminated with nulls. */
2372 while ((pkt
< limit
) && mask
&& *pkt
)
2374 pkt
= unpack_int (pkt
, &tag
); /* tag */
2375 pkt
= unpack_byte (pkt
, &length
); /* length */
2376 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2378 warning (_("ERROR RMT: threadinfo tag mismatch."));
2382 if (tag
== TAG_THREADID
)
2386 warning (_("ERROR RMT: length of threadid is not 16."));
2390 pkt
= unpack_threadid (pkt
, &ref
);
2391 mask
= mask
& ~TAG_THREADID
;
2394 if (tag
== TAG_EXISTS
)
2396 info
->active
= stub_unpack_int (pkt
, length
);
2398 mask
= mask
& ~(TAG_EXISTS
);
2401 warning (_("ERROR RMT: 'exists' length too long."));
2407 if (tag
== TAG_THREADNAME
)
2409 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2410 mask
= mask
& ~TAG_THREADNAME
;
2413 if (tag
== TAG_DISPLAY
)
2415 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2416 mask
= mask
& ~TAG_DISPLAY
;
2419 if (tag
== TAG_MOREDISPLAY
)
2421 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2422 mask
= mask
& ~TAG_MOREDISPLAY
;
2425 warning (_("ERROR RMT: unknown thread info tag."));
2426 break; /* Not a tag we know about. */
2432 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2433 struct gdb_ext_thread_info
*info
)
2435 struct remote_state
*rs
= get_remote_state ();
2438 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2440 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2442 if (rs
->buf
[0] == '\0')
2445 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2450 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2453 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2454 threadref
*nextthread
)
2456 *pkt
++ = 'q'; /* info query packet */
2457 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2458 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2459 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2460 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2465 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2468 parse_threadlist_response (char *pkt
, int result_limit
,
2469 threadref
*original_echo
, threadref
*resultlist
,
2472 struct remote_state
*rs
= get_remote_state ();
2474 int count
, resultcount
, done
;
2477 /* Assume the 'q' and 'M chars have been stripped. */
2478 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2479 /* done parse past here */
2480 pkt
= unpack_byte (pkt
, &count
); /* count field */
2481 pkt
= unpack_nibble (pkt
, &done
);
2482 /* The first threadid is the argument threadid. */
2483 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2484 while ((count
-- > 0) && (pkt
< limit
))
2486 pkt
= unpack_threadid (pkt
, resultlist
++);
2487 if (resultcount
++ >= result_limit
)
2496 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2497 int *done
, int *result_count
, threadref
*threadlist
)
2499 struct remote_state
*rs
= get_remote_state ();
2500 static threadref echo_nextthread
;
2503 /* Trancate result limit to be smaller than the packet size. */
2504 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2505 >= get_remote_packet_size ())
2506 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2508 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2510 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2512 if (*rs
->buf
== '\0')
2516 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
2519 if (!threadmatch (&echo_nextthread
, nextthread
))
2521 /* FIXME: This is a good reason to drop the packet. */
2522 /* Possably, there is a duplicate response. */
2524 retransmit immediatly - race conditions
2525 retransmit after timeout - yes
2527 wait for packet, then exit
2529 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2530 return 0; /* I choose simply exiting. */
2532 if (*result_count
<= 0)
2536 warning (_("RMT ERROR : failed to get remote thread list."));
2539 return result
; /* break; */
2541 if (*result_count
> result_limit
)
2544 warning (_("RMT ERROR: threadlist response longer than requested."));
2550 /* This is the interface between remote and threads, remotes upper
2553 /* remote_find_new_threads retrieves the thread list and for each
2554 thread in the list, looks up the thread in GDB's internal list,
2555 adding the thread if it does not already exist. This involves
2556 getting partial thread lists from the remote target so, polling the
2557 quit_flag is required. */
2560 /* About this many threadisds fit in a packet. */
2562 #define MAXTHREADLISTRESULTS 32
2565 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2568 int done
, i
, result_count
;
2572 static threadref nextthread
;
2573 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
2578 if (loopcount
++ > looplimit
)
2581 warning (_("Remote fetch threadlist -infinite loop-."));
2584 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
2585 &done
, &result_count
, resultthreadlist
))
2590 /* Clear for later iterations. */
2592 /* Setup to resume next batch of thread references, set nextthread. */
2593 if (result_count
>= 1)
2594 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
2596 while (result_count
--)
2597 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
2604 remote_newthread_step (threadref
*ref
, void *context
)
2606 int pid
= ptid_get_pid (inferior_ptid
);
2607 ptid_t ptid
= ptid_build (pid
, 0, threadref_to_int (ref
));
2609 if (!in_thread_list (ptid
))
2611 return 1; /* continue iterator */
2614 #define CRAZY_MAX_THREADS 1000
2617 remote_current_thread (ptid_t oldpid
)
2619 struct remote_state
*rs
= get_remote_state ();
2622 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2623 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2624 return read_ptid (&rs
->buf
[2], NULL
);
2629 /* Find new threads for info threads command.
2630 * Original version, using John Metzler's thread protocol.
2634 remote_find_new_threads (void)
2636 remote_threadlist_iterator (remote_newthread_step
, 0,
2640 #if defined(HAVE_LIBEXPAT)
2642 typedef struct thread_item
2648 DEF_VEC_O(thread_item_t
);
2650 struct threads_parsing_context
2652 VEC (thread_item_t
) *items
;
2656 start_thread (struct gdb_xml_parser
*parser
,
2657 const struct gdb_xml_element
*element
,
2658 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2660 struct threads_parsing_context
*data
= user_data
;
2662 struct thread_item item
;
2664 struct gdb_xml_value
*attr
;
2666 id
= xml_find_attribute (attributes
, "id")->value
;
2667 item
.ptid
= read_ptid (id
, NULL
);
2669 attr
= xml_find_attribute (attributes
, "core");
2671 item
.core
= *(ULONGEST
*) attr
->value
;
2677 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2681 end_thread (struct gdb_xml_parser
*parser
,
2682 const struct gdb_xml_element
*element
,
2683 void *user_data
, const char *body_text
)
2685 struct threads_parsing_context
*data
= user_data
;
2687 if (body_text
&& *body_text
)
2688 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2691 const struct gdb_xml_attribute thread_attributes
[] = {
2692 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2693 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2694 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2697 const struct gdb_xml_element thread_children
[] = {
2698 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2701 const struct gdb_xml_element threads_children
[] = {
2702 { "thread", thread_attributes
, thread_children
,
2703 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2704 start_thread
, end_thread
},
2705 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2708 const struct gdb_xml_element threads_elements
[] = {
2709 { "threads", NULL
, threads_children
,
2710 GDB_XML_EF_NONE
, NULL
, NULL
},
2711 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2714 /* Discard the contents of the constructed thread info context. */
2717 clear_threads_parsing_context (void *p
)
2719 struct threads_parsing_context
*context
= p
;
2721 struct thread_item
*item
;
2723 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2724 xfree (item
->extra
);
2726 VEC_free (thread_item_t
, context
->items
);
2732 * Find all threads for info threads command.
2733 * Uses new thread protocol contributed by Cisco.
2734 * Falls back and attempts to use the older method (above)
2735 * if the target doesn't respond to the new method.
2739 remote_threads_info (struct target_ops
*ops
)
2741 struct remote_state
*rs
= get_remote_state ();
2745 if (rs
->remote_desc
== 0) /* paranoia */
2746 error (_("Command can only be used when connected to the remote target."));
2748 #if defined(HAVE_LIBEXPAT)
2749 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2751 char *xml
= target_read_stralloc (¤t_target
,
2752 TARGET_OBJECT_THREADS
, NULL
);
2754 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2758 struct threads_parsing_context context
;
2760 context
.items
= NULL
;
2761 make_cleanup (clear_threads_parsing_context
, &context
);
2763 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2764 threads_elements
, xml
, &context
) == 0)
2767 struct thread_item
*item
;
2770 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2773 if (!ptid_equal (item
->ptid
, null_ptid
))
2775 struct private_thread_info
*info
;
2776 /* In non-stop mode, we assume new found threads
2777 are running until proven otherwise with a
2778 stop reply. In all-stop, we can only get
2779 here if all threads are stopped. */
2780 int running
= non_stop
? 1 : 0;
2782 remote_notice_new_inferior (item
->ptid
, running
);
2784 info
= demand_private_info (item
->ptid
);
2785 info
->core
= item
->core
;
2786 info
->extra
= item
->extra
;
2793 do_cleanups (back_to
);
2798 if (rs
->use_threadinfo_query
)
2800 putpkt ("qfThreadInfo");
2801 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2803 if (bufp
[0] != '\0') /* q packet recognized */
2805 struct cleanup
*old_chain
;
2808 /* remote_notice_new_inferior (in the loop below) may make
2809 new RSP calls, which clobber rs->buf. Work with a
2811 bufp
= saved_reply
= xstrdup (rs
->buf
);
2812 old_chain
= make_cleanup (free_current_contents
, &saved_reply
);
2814 while (*bufp
++ == 'm') /* reply contains one or more TID */
2818 new_thread
= read_ptid (bufp
, &bufp
);
2819 if (!ptid_equal (new_thread
, null_ptid
))
2821 /* In non-stop mode, we assume new found threads
2822 are running until proven otherwise with a
2823 stop reply. In all-stop, we can only get
2824 here if all threads are stopped. */
2825 int running
= non_stop
? 1 : 0;
2827 remote_notice_new_inferior (new_thread
, running
);
2830 while (*bufp
++ == ','); /* comma-separated list */
2831 free_current_contents (&saved_reply
);
2832 putpkt ("qsThreadInfo");
2833 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2834 bufp
= saved_reply
= xstrdup (rs
->buf
);
2836 do_cleanups (old_chain
);
2841 /* Only qfThreadInfo is supported in non-stop mode. */
2845 /* Else fall back to old method based on jmetzler protocol. */
2846 rs
->use_threadinfo_query
= 0;
2847 remote_find_new_threads ();
2852 * Collect a descriptive string about the given thread.
2853 * The target may say anything it wants to about the thread
2854 * (typically info about its blocked / runnable state, name, etc.).
2855 * This string will appear in the info threads display.
2857 * Optional: targets are not required to implement this function.
2861 remote_threads_extra_info (struct thread_info
*tp
)
2863 struct remote_state
*rs
= get_remote_state ();
2867 struct gdb_ext_thread_info threadinfo
;
2868 static char display_buf
[100]; /* arbitrary... */
2869 int n
= 0; /* position in display_buf */
2871 if (rs
->remote_desc
== 0) /* paranoia */
2872 internal_error (__FILE__
, __LINE__
,
2873 _("remote_threads_extra_info"));
2875 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2876 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2877 /* This is the main thread which was added by GDB. The remote
2878 server doesn't know about it. */
2881 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2883 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2885 if (info
&& info
->private)
2886 return info
->private->extra
;
2891 if (rs
->use_threadextra_query
)
2894 char *endb
= rs
->buf
+ get_remote_packet_size ();
2896 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2898 write_ptid (b
, endb
, tp
->ptid
);
2901 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2902 if (rs
->buf
[0] != 0)
2904 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2905 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2906 display_buf
[result
] = '\0';
2911 /* If the above query fails, fall back to the old method. */
2912 rs
->use_threadextra_query
= 0;
2913 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2914 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2915 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2916 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2917 if (threadinfo
.active
)
2919 if (*threadinfo
.shortname
)
2920 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2921 " Name: %s,", threadinfo
.shortname
);
2922 if (*threadinfo
.display
)
2923 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2924 " State: %s,", threadinfo
.display
);
2925 if (*threadinfo
.more_display
)
2926 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2927 " Priority: %s", threadinfo
.more_display
);
2931 /* For purely cosmetic reasons, clear up trailing commas. */
2932 if (',' == display_buf
[n
-1])
2933 display_buf
[n
-1] = ' ';
2942 remote_static_tracepoint_marker_at (CORE_ADDR addr
,
2943 struct static_tracepoint_marker
*marker
)
2945 struct remote_state
*rs
= get_remote_state ();
2948 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
2950 p
+= hexnumstr (p
, addr
);
2952 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2956 error (_("Remote failure reply: %s"), p
);
2960 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2967 static VEC(static_tracepoint_marker_p
) *
2968 remote_static_tracepoint_markers_by_strid (const char *strid
)
2970 struct remote_state
*rs
= get_remote_state ();
2971 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2972 struct static_tracepoint_marker
*marker
= NULL
;
2973 struct cleanup
*old_chain
;
2976 /* Ask for a first packet of static tracepoint marker
2979 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2982 error (_("Remote failure reply: %s"), p
);
2984 old_chain
= make_cleanup (free_current_marker
, &marker
);
2989 marker
= XCNEW (struct static_tracepoint_marker
);
2993 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2995 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2997 VEC_safe_push (static_tracepoint_marker_p
,
3003 release_static_tracepoint_marker (marker
);
3004 memset (marker
, 0, sizeof (*marker
));
3007 while (*p
++ == ','); /* comma-separated list */
3008 /* Ask for another packet of static tracepoint definition. */
3010 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3014 do_cleanups (old_chain
);
3019 /* Implement the to_get_ada_task_ptid function for the remote targets. */
3022 remote_get_ada_task_ptid (long lwp
, long thread
)
3024 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
3028 /* Restart the remote side; this is an extended protocol operation. */
3031 extended_remote_restart (void)
3033 struct remote_state
*rs
= get_remote_state ();
3035 /* Send the restart command; for reasons I don't understand the
3036 remote side really expects a number after the "R". */
3037 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
3040 remote_fileio_reset ();
3043 /* Clean up connection to a remote debugger. */
3048 struct remote_state
*rs
= get_remote_state ();
3050 if (rs
->remote_desc
== NULL
)
3051 return; /* already closed */
3053 /* Make sure we leave stdin registered in the event loop, and we
3054 don't leave the async SIGINT signal handler installed. */
3055 remote_terminal_ours ();
3057 serial_close (rs
->remote_desc
);
3058 rs
->remote_desc
= NULL
;
3060 /* We don't have a connection to the remote stub anymore. Get rid
3061 of all the inferiors and their threads we were controlling.
3062 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3063 will be unable to find the thread corresponding to (pid, 0, 0). */
3064 inferior_ptid
= null_ptid
;
3065 discard_all_inferiors ();
3067 /* Stop replies may from inferiors which are still unknown to GDB.
3068 We are closing the remote target, so we should discard
3069 everything, including the stop replies from GDB-unknown
3071 discard_pending_stop_replies (NULL
);
3073 if (remote_async_inferior_event_token
)
3074 delete_async_event_handler (&remote_async_inferior_event_token
);
3076 remote_notif_unregister_async_event_handler ();
3078 trace_reset_local_state ();
3081 /* Query the remote side for the text, data and bss offsets. */
3086 struct remote_state
*rs
= get_remote_state ();
3089 int lose
, num_segments
= 0, do_sections
, do_segments
;
3090 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3091 struct section_offsets
*offs
;
3092 struct symfile_segment_data
*data
;
3094 if (symfile_objfile
== NULL
)
3097 putpkt ("qOffsets");
3098 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3101 if (buf
[0] == '\000')
3102 return; /* Return silently. Stub doesn't support
3106 warning (_("Remote failure reply: %s"), buf
);
3110 /* Pick up each field in turn. This used to be done with scanf, but
3111 scanf will make trouble if CORE_ADDR size doesn't match
3112 conversion directives correctly. The following code will work
3113 with any size of CORE_ADDR. */
3114 text_addr
= data_addr
= bss_addr
= 0;
3118 if (strncmp (ptr
, "Text=", 5) == 0)
3121 /* Don't use strtol, could lose on big values. */
3122 while (*ptr
&& *ptr
!= ';')
3123 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3125 if (strncmp (ptr
, ";Data=", 6) == 0)
3128 while (*ptr
&& *ptr
!= ';')
3129 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3134 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3137 while (*ptr
&& *ptr
!= ';')
3138 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3140 if (bss_addr
!= data_addr
)
3141 warning (_("Target reported unsupported offsets: %s"), buf
);
3146 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3149 /* Don't use strtol, could lose on big values. */
3150 while (*ptr
&& *ptr
!= ';')
3151 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3154 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3157 while (*ptr
&& *ptr
!= ';')
3158 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3166 error (_("Malformed response to offset query, %s"), buf
);
3167 else if (*ptr
!= '\0')
3168 warning (_("Target reported unsupported offsets: %s"), buf
);
3170 offs
= ((struct section_offsets
*)
3171 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3172 memcpy (offs
, symfile_objfile
->section_offsets
,
3173 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3175 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3176 do_segments
= (data
!= NULL
);
3177 do_sections
= num_segments
== 0;
3179 if (num_segments
> 0)
3181 segments
[0] = text_addr
;
3182 segments
[1] = data_addr
;
3184 /* If we have two segments, we can still try to relocate everything
3185 by assuming that the .text and .data offsets apply to the whole
3186 text and data segments. Convert the offsets given in the packet
3187 to base addresses for symfile_map_offsets_to_segments. */
3188 else if (data
&& data
->num_segments
== 2)
3190 segments
[0] = data
->segment_bases
[0] + text_addr
;
3191 segments
[1] = data
->segment_bases
[1] + data_addr
;
3194 /* If the object file has only one segment, assume that it is text
3195 rather than data; main programs with no writable data are rare,
3196 but programs with no code are useless. Of course the code might
3197 have ended up in the data segment... to detect that we would need
3198 the permissions here. */
3199 else if (data
&& data
->num_segments
== 1)
3201 segments
[0] = data
->segment_bases
[0] + text_addr
;
3204 /* There's no way to relocate by segment. */
3210 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3211 offs
, num_segments
, segments
);
3213 if (ret
== 0 && !do_sections
)
3214 error (_("Can not handle qOffsets TextSeg "
3215 "response with this symbol file"));
3222 free_symfile_segment_data (data
);
3226 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3228 /* This is a temporary kludge to force data and bss to use the
3229 same offsets because that's what nlmconv does now. The real
3230 solution requires changes to the stub and remote.c that I
3231 don't have time to do right now. */
3233 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3234 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3237 objfile_relocate (symfile_objfile
, offs
);
3240 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3241 threads we know are stopped already. This is used during the
3242 initial remote connection in non-stop mode --- threads that are
3243 reported as already being stopped are left stopped. */
3246 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3248 /* If we have a stop reply for this thread, it must be stopped. */
3249 if (peek_stop_reply (thread
->ptid
))
3250 set_stop_requested (thread
->ptid
, 1);
3255 /* Send interrupt_sequence to remote target. */
3257 send_interrupt_sequence (void)
3259 struct remote_state
*rs
= get_remote_state ();
3261 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3262 remote_serial_write ("\x03", 1);
3263 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3264 serial_send_break (rs
->remote_desc
);
3265 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3267 serial_send_break (rs
->remote_desc
);
3268 remote_serial_write ("g", 1);
3271 internal_error (__FILE__
, __LINE__
,
3272 _("Invalid value for interrupt_sequence_mode: %s."),
3273 interrupt_sequence_mode
);
3277 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3278 and extract the PTID. Returns NULL_PTID if not found. */
3281 stop_reply_extract_thread (char *stop_reply
)
3283 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3287 /* Txx r:val ; r:val (...) */
3290 /* Look for "register" named "thread". */
3295 p1
= strchr (p
, ':');
3299 if (strncmp (p
, "thread", p1
- p
) == 0)
3300 return read_ptid (++p1
, &p
);
3302 p1
= strchr (p
, ';');
3314 /* Query the remote target for which is the current thread/process,
3315 add it to our tables, and update INFERIOR_PTID. The caller is
3316 responsible for setting the state such that the remote end is ready
3317 to return the current thread.
3319 This function is called after handling the '?' or 'vRun' packets,
3320 whose response is a stop reply from which we can also try
3321 extracting the thread. If the target doesn't support the explicit
3322 qC query, we infer the current thread from that stop reply, passed
3323 in in WAIT_STATUS, which may be NULL. */
3326 add_current_inferior_and_thread (char *wait_status
)
3328 struct remote_state
*rs
= get_remote_state ();
3330 ptid_t ptid
= null_ptid
;
3332 inferior_ptid
= null_ptid
;
3334 /* Now, if we have thread information, update inferior_ptid. First
3335 if we have a stop reply handy, maybe it's a T stop reply with a
3336 "thread" register we can extract the current thread from. If
3337 not, ask the remote which is the current thread, with qC. The
3338 former method avoids a roundtrip. Note we don't use
3339 remote_parse_stop_reply as that makes use of the target
3340 architecture, which we haven't yet fully determined at this
3342 if (wait_status
!= NULL
)
3343 ptid
= stop_reply_extract_thread (wait_status
);
3344 if (ptid_equal (ptid
, null_ptid
))
3345 ptid
= remote_current_thread (inferior_ptid
);
3347 if (!ptid_equal (ptid
, null_ptid
))
3349 if (!remote_multi_process_p (rs
))
3352 inferior_ptid
= ptid
;
3356 /* Without this, some commands which require an active target
3357 (such as kill) won't work. This variable serves (at least)
3358 double duty as both the pid of the target process (if it has
3359 such), and as a flag indicating that a target is active. */
3360 inferior_ptid
= magic_null_ptid
;
3364 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3366 /* Add the main thread. */
3367 add_thread_silent (inferior_ptid
);
3371 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3373 struct remote_state
*rs
= get_remote_state ();
3374 struct packet_config
*noack_config
;
3375 char *wait_status
= NULL
;
3377 immediate_quit
++; /* Allow user to interrupt it. */
3380 if (interrupt_on_connect
)
3381 send_interrupt_sequence ();
3383 /* Ack any packet which the remote side has already sent. */
3384 serial_write (rs
->remote_desc
, "+", 1);
3386 /* Signal other parts that we're going through the initial setup,
3387 and so things may not be stable yet. */
3388 rs
->starting_up
= 1;
3390 /* The first packet we send to the target is the optional "supported
3391 packets" request. If the target can answer this, it will tell us
3392 which later probes to skip. */
3393 remote_query_supported ();
3395 /* If the stub wants to get a QAllow, compose one and send it. */
3396 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3397 remote_set_permissions ();
3399 /* Next, we possibly activate noack mode.
3401 If the QStartNoAckMode packet configuration is set to AUTO,
3402 enable noack mode if the stub reported a wish for it with
3405 If set to TRUE, then enable noack mode even if the stub didn't
3406 report it in qSupported. If the stub doesn't reply OK, the
3407 session ends with an error.
3409 If FALSE, then don't activate noack mode, regardless of what the
3410 stub claimed should be the default with qSupported. */
3412 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3414 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3415 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3416 && noack_config
->support
== PACKET_ENABLE
))
3418 putpkt ("QStartNoAckMode");
3419 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3420 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3426 /* Tell the remote that we are using the extended protocol. */
3428 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3431 /* Let the target know which signals it is allowed to pass down to
3433 update_signals_program_target ();
3435 /* Next, if the target can specify a description, read it. We do
3436 this before anything involving memory or registers. */
3437 target_find_description ();
3439 /* Next, now that we know something about the target, update the
3440 address spaces in the program spaces. */
3441 update_address_spaces ();
3443 /* On OSs where the list of libraries is global to all
3444 processes, we fetch them early. */
3445 if (gdbarch_has_global_solist (target_gdbarch ()))
3446 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3450 if (!rs
->non_stop_aware
)
3451 error (_("Non-stop mode requested, but remote "
3452 "does not support non-stop"));
3454 putpkt ("QNonStop:1");
3455 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3457 if (strcmp (rs
->buf
, "OK") != 0)
3458 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3460 /* Find about threads and processes the stub is already
3461 controlling. We default to adding them in the running state.
3462 The '?' query below will then tell us about which threads are
3464 remote_threads_info (target
);
3466 else if (rs
->non_stop_aware
)
3468 /* Don't assume that the stub can operate in all-stop mode.
3469 Request it explicitly. */
3470 putpkt ("QNonStop:0");
3471 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3473 if (strcmp (rs
->buf
, "OK") != 0)
3474 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3477 /* Upload TSVs regardless of whether the target is running or not. The
3478 remote stub, such as GDBserver, may have some predefined or builtin
3479 TSVs, even if the target is not running. */
3480 if (remote_get_trace_status (current_trace_status ()) != -1)
3482 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3484 remote_upload_trace_state_variables (&uploaded_tsvs
);
3485 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3488 /* Check whether the target is running now. */
3490 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3496 struct inferior
*inf
;
3498 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3501 error (_("The target is not running (try extended-remote?)"));
3503 /* We're connected, but not running. Drop out before we
3504 call start_remote. */
3505 rs
->starting_up
= 0;
3510 /* Save the reply for later. */
3511 wait_status
= alloca (strlen (rs
->buf
) + 1);
3512 strcpy (wait_status
, rs
->buf
);
3515 /* Let the stub know that we want it to return the thread. */
3516 set_continue_thread (minus_one_ptid
);
3518 add_current_inferior_and_thread (wait_status
);
3520 /* init_wait_for_inferior should be called before get_offsets in order
3521 to manage `inserted' flag in bp loc in a correct state.
3522 breakpoint_init_inferior, called from init_wait_for_inferior, set
3523 `inserted' flag to 0, while before breakpoint_re_set, called from
3524 start_remote, set `inserted' flag to 1. In the initialization of
3525 inferior, breakpoint_init_inferior should be called first, and then
3526 breakpoint_re_set can be called. If this order is broken, state of
3527 `inserted' flag is wrong, and cause some problems on breakpoint
3529 init_wait_for_inferior ();
3531 get_offsets (); /* Get text, data & bss offsets. */
3533 /* If we could not find a description using qXfer, and we know
3534 how to do it some other way, try again. This is not
3535 supported for non-stop; it could be, but it is tricky if
3536 there are no stopped threads when we connect. */
3537 if (remote_read_description_p (target
)
3538 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
3540 target_clear_description ();
3541 target_find_description ();
3544 /* Use the previously fetched status. */
3545 gdb_assert (wait_status
!= NULL
);
3546 strcpy (rs
->buf
, wait_status
);
3547 rs
->cached_wait_status
= 1;
3550 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3554 /* Clear WFI global state. Do this before finding about new
3555 threads and inferiors, and setting the current inferior.
3556 Otherwise we would clear the proceed status of the current
3557 inferior when we want its stop_soon state to be preserved
3558 (see notice_new_inferior). */
3559 init_wait_for_inferior ();
3561 /* In non-stop, we will either get an "OK", meaning that there
3562 are no stopped threads at this time; or, a regular stop
3563 reply. In the latter case, there may be more than one thread
3564 stopped --- we pull them all out using the vStopped
3566 if (strcmp (rs
->buf
, "OK") != 0)
3568 struct notif_client
*notif
= ¬if_client_stop
;
3570 /* remote_notif_get_pending_replies acks this one, and gets
3572 notif_client_stop
.pending_event
3573 = remote_notif_parse (notif
, rs
->buf
);
3574 remote_notif_get_pending_events (notif
);
3576 /* Make sure that threads that were stopped remain
3578 iterate_over_threads (set_stop_requested_callback
, NULL
);
3581 if (target_can_async_p ())
3582 target_async (inferior_event_handler
, 0);
3584 if (thread_count () == 0)
3587 error (_("The target is not running (try extended-remote?)"));
3589 /* We're connected, but not running. Drop out before we
3590 call start_remote. */
3591 rs
->starting_up
= 0;
3595 /* Let the stub know that we want it to return the thread. */
3597 /* Force the stub to choose a thread. */
3598 set_general_thread (null_ptid
);
3601 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3602 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3603 error (_("remote didn't report the current thread in non-stop mode"));
3605 get_offsets (); /* Get text, data & bss offsets. */
3607 /* In non-stop mode, any cached wait status will be stored in
3608 the stop reply queue. */
3609 gdb_assert (wait_status
== NULL
);
3611 /* Report all signals during attach/startup. */
3612 remote_pass_signals (0, NULL
);
3615 /* If we connected to a live target, do some additional setup. */
3616 if (target_has_execution
)
3618 if (exec_bfd
) /* No use without an exec file. */
3619 remote_check_symbols ();
3622 /* Possibly the target has been engaged in a trace run started
3623 previously; find out where things are at. */
3624 if (remote_get_trace_status (current_trace_status ()) != -1)
3626 struct uploaded_tp
*uploaded_tps
= NULL
;
3628 if (current_trace_status ()->running
)
3629 printf_filtered (_("Trace is already running on the target.\n"));
3631 remote_upload_tracepoints (&uploaded_tps
);
3633 merge_uploaded_tracepoints (&uploaded_tps
);
3636 /* The thread and inferior lists are now synchronized with the
3637 target, our symbols have been relocated, and we're merged the
3638 target's tracepoints with ours. We're done with basic start
3640 rs
->starting_up
= 0;
3642 /* If breakpoints are global, insert them now. */
3643 if (gdbarch_has_global_breakpoints (target_gdbarch ())
3644 && breakpoints_always_inserted_mode ())
3645 insert_breakpoints ();
3648 /* Open a connection to a remote debugger.
3649 NAME is the filename used for communication. */
3652 remote_open (char *name
, int from_tty
)
3654 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3657 /* Open a connection to a remote debugger using the extended
3658 remote gdb protocol. NAME is the filename used for communication. */
3661 extended_remote_open (char *name
, int from_tty
)
3663 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3666 /* Generic code for opening a connection to a remote target. */
3669 init_all_packet_configs (void)
3673 for (i
= 0; i
< PACKET_MAX
; i
++)
3674 update_packet_config (&remote_protocol_packets
[i
]);
3677 /* Symbol look-up. */
3680 remote_check_symbols (void)
3682 struct remote_state
*rs
= get_remote_state ();
3683 char *msg
, *reply
, *tmp
;
3684 struct minimal_symbol
*sym
;
3687 /* The remote side has no concept of inferiors that aren't running
3688 yet, it only knows about running processes. If we're connected
3689 but our current inferior is not running, we should not invite the
3690 remote target to request symbol lookups related to its
3691 (unrelated) current process. */
3692 if (!target_has_execution
)
3695 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3698 /* Make sure the remote is pointing at the right process. Note
3699 there's no way to select "no process". */
3700 set_general_process ();
3702 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3703 because we need both at the same time. */
3704 msg
= alloca (get_remote_packet_size ());
3706 /* Invite target to request symbol lookups. */
3708 putpkt ("qSymbol::");
3709 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3710 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3713 while (strncmp (reply
, "qSymbol:", 8) == 0)
3716 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3718 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3720 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3723 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
3724 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3726 /* If this is a function address, return the start of code
3727 instead of any data function descriptor. */
3728 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3732 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3733 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3737 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3742 static struct serial
*
3743 remote_serial_open (char *name
)
3745 static int udp_warning
= 0;
3747 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3748 of in ser-tcp.c, because it is the remote protocol assuming that the
3749 serial connection is reliable and not the serial connection promising
3751 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3753 warning (_("The remote protocol may be unreliable over UDP.\n"
3754 "Some events may be lost, rendering further debugging "
3759 return serial_open (name
);
3762 /* Inform the target of our permission settings. The permission flags
3763 work without this, but if the target knows the settings, it can do
3764 a couple things. First, it can add its own check, to catch cases
3765 that somehow manage to get by the permissions checks in target
3766 methods. Second, if the target is wired to disallow particular
3767 settings (for instance, a system in the field that is not set up to
3768 be able to stop at a breakpoint), it can object to any unavailable
3772 remote_set_permissions (void)
3774 struct remote_state
*rs
= get_remote_state ();
3776 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3777 "WriteReg:%x;WriteMem:%x;"
3778 "InsertBreak:%x;InsertTrace:%x;"
3779 "InsertFastTrace:%x;Stop:%x",
3780 may_write_registers
, may_write_memory
,
3781 may_insert_breakpoints
, may_insert_tracepoints
,
3782 may_insert_fast_tracepoints
, may_stop
);
3784 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3786 /* If the target didn't like the packet, warn the user. Do not try
3787 to undo the user's settings, that would just be maddening. */
3788 if (strcmp (rs
->buf
, "OK") != 0)
3789 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3792 /* This type describes each known response to the qSupported
3794 struct protocol_feature
3796 /* The name of this protocol feature. */
3799 /* The default for this protocol feature. */
3800 enum packet_support default_support
;
3802 /* The function to call when this feature is reported, or after
3803 qSupported processing if the feature is not supported.
3804 The first argument points to this structure. The second
3805 argument indicates whether the packet requested support be
3806 enabled, disabled, or probed (or the default, if this function
3807 is being called at the end of processing and this feature was
3808 not reported). The third argument may be NULL; if not NULL, it
3809 is a NUL-terminated string taken from the packet following
3810 this feature's name and an equals sign. */
3811 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3814 /* The corresponding packet for this feature. Only used if
3815 FUNC is remote_supported_packet. */
3820 remote_supported_packet (const struct protocol_feature
*feature
,
3821 enum packet_support support
,
3822 const char *argument
)
3826 warning (_("Remote qSupported response supplied an unexpected value for"
3827 " \"%s\"."), feature
->name
);
3831 if (remote_protocol_packets
[feature
->packet
].support
3832 == PACKET_SUPPORT_UNKNOWN
)
3833 remote_protocol_packets
[feature
->packet
].support
= support
;
3837 remote_packet_size (const struct protocol_feature
*feature
,
3838 enum packet_support support
, const char *value
)
3840 struct remote_state
*rs
= get_remote_state ();
3845 if (support
!= PACKET_ENABLE
)
3848 if (value
== NULL
|| *value
== '\0')
3850 warning (_("Remote target reported \"%s\" without a size."),
3856 packet_size
= strtol (value
, &value_end
, 16);
3857 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3859 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3860 feature
->name
, value
);
3864 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3866 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3867 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3868 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3871 /* Record the new maximum packet size. */
3872 rs
->explicit_packet_size
= packet_size
;
3876 remote_multi_process_feature (const struct protocol_feature
*feature
,
3877 enum packet_support support
, const char *value
)
3879 struct remote_state
*rs
= get_remote_state ();
3881 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3885 remote_non_stop_feature (const struct protocol_feature
*feature
,
3886 enum packet_support support
, const char *value
)
3888 struct remote_state
*rs
= get_remote_state ();
3890 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3894 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3895 enum packet_support support
,
3898 struct remote_state
*rs
= get_remote_state ();
3900 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3904 remote_cond_breakpoint_feature (const struct protocol_feature
*feature
,
3905 enum packet_support support
,
3908 struct remote_state
*rs
= get_remote_state ();
3910 rs
->cond_breakpoints
= (support
== PACKET_ENABLE
);
3914 remote_breakpoint_commands_feature (const struct protocol_feature
*feature
,
3915 enum packet_support support
,
3918 struct remote_state
*rs
= get_remote_state ();
3920 rs
->breakpoint_commands
= (support
== PACKET_ENABLE
);
3924 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3925 enum packet_support support
,
3928 struct remote_state
*rs
= get_remote_state ();
3930 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3934 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3935 enum packet_support support
,
3938 struct remote_state
*rs
= get_remote_state ();
3940 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3944 remote_install_in_trace_feature (const struct protocol_feature
*feature
,
3945 enum packet_support support
,
3948 struct remote_state
*rs
= get_remote_state ();
3950 rs
->install_in_trace
= (support
== PACKET_ENABLE
);
3954 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3955 enum packet_support support
,
3958 struct remote_state
*rs
= get_remote_state ();
3960 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3964 remote_enable_disable_tracepoint_feature (const struct protocol_feature
*feature
,
3965 enum packet_support support
,
3968 struct remote_state
*rs
= get_remote_state ();
3970 rs
->enable_disable_tracepoints
= (support
== PACKET_ENABLE
);
3974 remote_string_tracing_feature (const struct protocol_feature
*feature
,
3975 enum packet_support support
,
3978 struct remote_state
*rs
= get_remote_state ();
3980 rs
->string_tracing
= (support
== PACKET_ENABLE
);
3984 remote_augmented_libraries_svr4_read_feature
3985 (const struct protocol_feature
*feature
,
3986 enum packet_support support
, const char *value
)
3988 struct remote_state
*rs
= get_remote_state ();
3990 rs
->augmented_libraries_svr4_read
= (support
== PACKET_ENABLE
);
3993 static const struct protocol_feature remote_protocol_features
[] = {
3994 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3995 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3996 PACKET_qXfer_auxv
},
3997 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3998 PACKET_qXfer_features
},
3999 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
4000 PACKET_qXfer_libraries
},
4001 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
4002 PACKET_qXfer_libraries_svr4
},
4003 { "augmented-libraries-svr4-read", PACKET_DISABLE
,
4004 remote_augmented_libraries_svr4_read_feature
, -1 },
4005 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
4006 PACKET_qXfer_memory_map
},
4007 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
4008 PACKET_qXfer_spu_read
},
4009 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
4010 PACKET_qXfer_spu_write
},
4011 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
4012 PACKET_qXfer_osdata
},
4013 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
4014 PACKET_qXfer_threads
},
4015 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
4016 PACKET_qXfer_traceframe_info
},
4017 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
4018 PACKET_QPassSignals
},
4019 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
4020 PACKET_QProgramSignals
},
4021 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
4022 PACKET_QStartNoAckMode
},
4023 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
4024 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
4025 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
4026 PACKET_qXfer_siginfo_read
},
4027 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
4028 PACKET_qXfer_siginfo_write
},
4029 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
4030 PACKET_ConditionalTracepoints
},
4031 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_cond_breakpoint_feature
,
4032 PACKET_ConditionalBreakpoints
},
4033 { "BreakpointCommands", PACKET_DISABLE
, remote_breakpoint_commands_feature
,
4034 PACKET_BreakpointCommands
},
4035 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
4036 PACKET_FastTracepoints
},
4037 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
4038 PACKET_StaticTracepoints
},
4039 {"InstallInTrace", PACKET_DISABLE
, remote_install_in_trace_feature
,
4040 PACKET_InstallInTrace
},
4041 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
4043 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
4045 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
4047 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
4048 PACKET_TracepointSource
},
4049 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
4051 { "EnableDisableTracepoints", PACKET_DISABLE
,
4052 remote_enable_disable_tracepoint_feature
, -1 },
4053 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
4054 PACKET_qXfer_fdpic
},
4055 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
4057 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
4058 PACKET_QDisableRandomization
},
4059 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
4060 { "QTBuffer:size", PACKET_DISABLE
,
4061 remote_supported_packet
, PACKET_QTBuffer_size
},
4062 { "tracenz", PACKET_DISABLE
,
4063 remote_string_tracing_feature
, -1 },
4064 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
4065 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
4066 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
4067 PACKET_qXfer_btrace
}
4070 static char *remote_support_xml
;
4072 /* Register string appended to "xmlRegisters=" in qSupported query. */
4075 register_remote_support_xml (const char *xml
)
4077 #if defined(HAVE_LIBEXPAT)
4078 if (remote_support_xml
== NULL
)
4079 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
4082 char *copy
= xstrdup (remote_support_xml
+ 13);
4083 char *p
= strtok (copy
, ",");
4087 if (strcmp (p
, xml
) == 0)
4094 while ((p
= strtok (NULL
, ",")) != NULL
);
4097 remote_support_xml
= reconcat (remote_support_xml
,
4098 remote_support_xml
, ",", xml
,
4105 remote_query_supported_append (char *msg
, const char *append
)
4108 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
4110 return xstrdup (append
);
4114 remote_query_supported (void)
4116 struct remote_state
*rs
= get_remote_state ();
4119 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4121 /* The packet support flags are handled differently for this packet
4122 than for most others. We treat an error, a disabled packet, and
4123 an empty response identically: any features which must be reported
4124 to be used will be automatically disabled. An empty buffer
4125 accomplishes this, since that is also the representation for a list
4126 containing no features. */
4129 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
4132 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4134 q
= remote_query_supported_append (q
, "multiprocess+");
4136 if (remote_support_xml
)
4137 q
= remote_query_supported_append (q
, remote_support_xml
);
4139 q
= remote_query_supported_append (q
, "qRelocInsn+");
4141 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4144 do_cleanups (old_chain
);
4146 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4148 /* If an error occured, warn, but do not return - just reset the
4149 buffer to empty and go on to disable features. */
4150 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4153 warning (_("Remote failure reply: %s"), rs
->buf
);
4158 memset (seen
, 0, sizeof (seen
));
4163 enum packet_support is_supported
;
4164 char *p
, *end
, *name_end
, *value
;
4166 /* First separate out this item from the rest of the packet. If
4167 there's another item after this, we overwrite the separator
4168 (terminated strings are much easier to work with). */
4170 end
= strchr (p
, ';');
4173 end
= p
+ strlen (p
);
4183 warning (_("empty item in \"qSupported\" response"));
4188 name_end
= strchr (p
, '=');
4191 /* This is a name=value entry. */
4192 is_supported
= PACKET_ENABLE
;
4193 value
= name_end
+ 1;
4202 is_supported
= PACKET_ENABLE
;
4206 is_supported
= PACKET_DISABLE
;
4210 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4214 warning (_("unrecognized item \"%s\" "
4215 "in \"qSupported\" response"), p
);
4221 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4222 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4224 const struct protocol_feature
*feature
;
4227 feature
= &remote_protocol_features
[i
];
4228 feature
->func (feature
, is_supported
, value
);
4233 /* If we increased the packet size, make sure to increase the global
4234 buffer size also. We delay this until after parsing the entire
4235 qSupported packet, because this is the same buffer we were
4237 if (rs
->buf_size
< rs
->explicit_packet_size
)
4239 rs
->buf_size
= rs
->explicit_packet_size
;
4240 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4243 /* Handle the defaults for unmentioned features. */
4244 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4247 const struct protocol_feature
*feature
;
4249 feature
= &remote_protocol_features
[i
];
4250 feature
->func (feature
, feature
->default_support
, NULL
);
4254 /* Remove any of the remote.c targets from target stack. Upper targets depend
4255 on it so remove them first. */
4258 remote_unpush_target (void)
4260 pop_all_targets_above (process_stratum
- 1);
4264 remote_open_1 (char *name
, int from_tty
,
4265 struct target_ops
*target
, int extended_p
)
4267 struct remote_state
*rs
= get_remote_state ();
4270 error (_("To open a remote debug connection, you need to specify what\n"
4271 "serial device is attached to the remote system\n"
4272 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4274 /* See FIXME above. */
4275 if (!target_async_permitted
)
4276 wait_forever_enabled_p
= 1;
4278 /* If we're connected to a running target, target_preopen will kill it.
4279 Ask this question first, before target_preopen has a chance to kill
4281 if (rs
->remote_desc
!= NULL
&& !have_inferiors ())
4284 && !query (_("Already connected to a remote target. Disconnect? ")))
4285 error (_("Still connected."));
4288 /* Here the possibly existing remote target gets unpushed. */
4289 target_preopen (from_tty
);
4291 /* Make sure we send the passed signals list the next time we resume. */
4292 xfree (rs
->last_pass_packet
);
4293 rs
->last_pass_packet
= NULL
;
4295 /* Make sure we send the program signals list the next time we
4297 xfree (rs
->last_program_signals_packet
);
4298 rs
->last_program_signals_packet
= NULL
;
4300 remote_fileio_reset ();
4301 reopen_exec_file ();
4304 rs
->remote_desc
= remote_serial_open (name
);
4305 if (!rs
->remote_desc
)
4306 perror_with_name (name
);
4308 if (baud_rate
!= -1)
4310 if (serial_setbaudrate (rs
->remote_desc
, baud_rate
))
4312 /* The requested speed could not be set. Error out to
4313 top level after closing remote_desc. Take care to
4314 set remote_desc to NULL to avoid closing remote_desc
4316 serial_close (rs
->remote_desc
);
4317 rs
->remote_desc
= NULL
;
4318 perror_with_name (name
);
4322 serial_raw (rs
->remote_desc
);
4324 /* If there is something sitting in the buffer we might take it as a
4325 response to a command, which would be bad. */
4326 serial_flush_input (rs
->remote_desc
);
4330 puts_filtered ("Remote debugging using ");
4331 puts_filtered (name
);
4332 puts_filtered ("\n");
4334 push_target (target
); /* Switch to using remote target now. */
4336 /* Register extra event sources in the event loop. */
4337 remote_async_inferior_event_token
4338 = create_async_event_handler (remote_async_inferior_event_handler
,
4340 remote_notif_register_async_event_handler ();
4342 /* Reset the target state; these things will be queried either by
4343 remote_query_supported or as they are needed. */
4344 init_all_packet_configs ();
4345 rs
->cached_wait_status
= 0;
4346 rs
->explicit_packet_size
= 0;
4348 rs
->multi_process_aware
= 0;
4349 rs
->extended
= extended_p
;
4350 rs
->non_stop_aware
= 0;
4351 rs
->waiting_for_stop_reply
= 0;
4352 rs
->ctrlc_pending_p
= 0;
4354 rs
->general_thread
= not_sent_ptid
;
4355 rs
->continue_thread
= not_sent_ptid
;
4356 rs
->remote_traceframe_number
= -1;
4358 /* Probe for ability to use "ThreadInfo" query, as required. */
4359 rs
->use_threadinfo_query
= 1;
4360 rs
->use_threadextra_query
= 1;
4362 if (target_async_permitted
)
4364 /* With this target we start out by owning the terminal. */
4365 remote_async_terminal_ours_p
= 1;
4367 /* FIXME: cagney/1999-09-23: During the initial connection it is
4368 assumed that the target is already ready and able to respond to
4369 requests. Unfortunately remote_start_remote() eventually calls
4370 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4371 around this. Eventually a mechanism that allows
4372 wait_for_inferior() to expect/get timeouts will be
4374 wait_forever_enabled_p
= 0;
4377 /* First delete any symbols previously loaded from shared libraries. */
4378 no_shared_libraries (NULL
, 0);
4381 init_thread_list ();
4383 /* Start the remote connection. If error() or QUIT, discard this
4384 target (we'd otherwise be in an inconsistent state) and then
4385 propogate the error on up the exception chain. This ensures that
4386 the caller doesn't stumble along blindly assuming that the
4387 function succeeded. The CLI doesn't have this problem but other
4388 UI's, such as MI do.
4390 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4391 this function should return an error indication letting the
4392 caller restore the previous state. Unfortunately the command
4393 ``target remote'' is directly wired to this function making that
4394 impossible. On a positive note, the CLI side of this problem has
4395 been fixed - the function set_cmd_context() makes it possible for
4396 all the ``target ....'' commands to share a common callback
4397 function. See cli-dump.c. */
4399 volatile struct gdb_exception ex
;
4401 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4403 remote_start_remote (from_tty
, target
, extended_p
);
4407 /* Pop the partially set up target - unless something else did
4408 already before throwing the exception. */
4409 if (rs
->remote_desc
!= NULL
)
4410 remote_unpush_target ();
4411 if (target_async_permitted
)
4412 wait_forever_enabled_p
= 1;
4413 throw_exception (ex
);
4417 if (target_async_permitted
)
4418 wait_forever_enabled_p
= 1;
4421 /* This takes a program previously attached to and detaches it. After
4422 this is done, GDB can be used to debug some other program. We
4423 better not have left any breakpoints in the target program or it'll
4424 die when it hits one. */
4427 remote_detach_1 (char *args
, int from_tty
, int extended
)
4429 int pid
= ptid_get_pid (inferior_ptid
);
4430 struct remote_state
*rs
= get_remote_state ();
4433 error (_("Argument given to \"detach\" when remotely debugging."));
4435 if (!target_has_execution
)
4436 error (_("No process to detach from."));
4440 char *exec_file
= get_exec_file (0);
4441 if (exec_file
== NULL
)
4443 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4444 target_pid_to_str (pid_to_ptid (pid
)));
4445 gdb_flush (gdb_stdout
);
4448 /* Tell the remote target to detach. */
4449 if (remote_multi_process_p (rs
))
4450 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4452 strcpy (rs
->buf
, "D");
4455 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4457 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4459 else if (rs
->buf
[0] == '\0')
4460 error (_("Remote doesn't know how to detach"));
4462 error (_("Can't detach process."));
4464 if (from_tty
&& !extended
)
4465 puts_filtered (_("Ending remote debugging.\n"));
4467 target_mourn_inferior ();
4471 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4473 remote_detach_1 (args
, from_tty
, 0);
4477 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4479 remote_detach_1 (args
, from_tty
, 1);
4482 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4485 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4488 error (_("Argument given to \"disconnect\" when remotely debugging."));
4490 /* Make sure we unpush even the extended remote targets; mourn
4491 won't do it. So call remote_mourn_1 directly instead of
4492 target_mourn_inferior. */
4493 remote_mourn_1 (target
);
4496 puts_filtered ("Ending remote debugging.\n");
4499 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4500 be chatty about it. */
4503 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4505 struct remote_state
*rs
= get_remote_state ();
4507 char *wait_status
= NULL
;
4509 pid
= parse_pid_to_attach (args
);
4511 /* Remote PID can be freely equal to getpid, do not check it here the same
4512 way as in other targets. */
4514 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4515 error (_("This target does not support attaching to a process"));
4519 char *exec_file
= get_exec_file (0);
4522 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4523 target_pid_to_str (pid_to_ptid (pid
)));
4525 printf_unfiltered (_("Attaching to %s\n"),
4526 target_pid_to_str (pid_to_ptid (pid
)));
4528 gdb_flush (gdb_stdout
);
4531 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4533 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4535 if (packet_ok (rs
->buf
,
4536 &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
4540 /* Save the reply for later. */
4541 wait_status
= alloca (strlen (rs
->buf
) + 1);
4542 strcpy (wait_status
, rs
->buf
);
4544 else if (strcmp (rs
->buf
, "OK") != 0)
4545 error (_("Attaching to %s failed with: %s"),
4546 target_pid_to_str (pid_to_ptid (pid
)),
4549 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4550 error (_("This target does not support attaching to a process"));
4552 error (_("Attaching to %s failed"),
4553 target_pid_to_str (pid_to_ptid (pid
)));
4555 set_current_inferior (remote_add_inferior (0, pid
, 1));
4557 inferior_ptid
= pid_to_ptid (pid
);
4561 struct thread_info
*thread
;
4563 /* Get list of threads. */
4564 remote_threads_info (target
);
4566 thread
= first_thread_of_process (pid
);
4568 inferior_ptid
= thread
->ptid
;
4570 inferior_ptid
= pid_to_ptid (pid
);
4572 /* Invalidate our notion of the remote current thread. */
4573 record_currthread (rs
, minus_one_ptid
);
4577 /* Now, if we have thread information, update inferior_ptid. */
4578 inferior_ptid
= remote_current_thread (inferior_ptid
);
4580 /* Add the main thread to the thread list. */
4581 add_thread_silent (inferior_ptid
);
4584 /* Next, if the target can specify a description, read it. We do
4585 this before anything involving memory or registers. */
4586 target_find_description ();
4590 /* Use the previously fetched status. */
4591 gdb_assert (wait_status
!= NULL
);
4593 if (target_can_async_p ())
4595 struct notif_event
*reply
4596 = remote_notif_parse (¬if_client_stop
, wait_status
);
4598 push_stop_reply ((struct stop_reply
*) reply
);
4600 target_async (inferior_event_handler
, 0);
4604 gdb_assert (wait_status
!= NULL
);
4605 strcpy (rs
->buf
, wait_status
);
4606 rs
->cached_wait_status
= 1;
4610 gdb_assert (wait_status
== NULL
);
4614 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4616 extended_remote_attach_1 (ops
, args
, from_tty
);
4619 /* Convert hex digit A to a number. */
4624 if (a
>= '0' && a
<= '9')
4626 else if (a
>= 'a' && a
<= 'f')
4627 return a
- 'a' + 10;
4628 else if (a
>= 'A' && a
<= 'F')
4629 return a
- 'A' + 10;
4631 error (_("Reply contains invalid hex digit %d"), a
);
4635 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
4639 for (i
= 0; i
< count
; i
++)
4641 if (hex
[0] == 0 || hex
[1] == 0)
4643 /* Hex string is short, or of uneven length.
4644 Return the count that has been converted so far. */
4647 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
4653 /* Convert number NIB to a hex digit. */
4661 return 'a' + nib
- 10;
4665 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4669 /* May use a length, or a nul-terminated string as input. */
4671 count
= strlen ((char *) bin
);
4673 for (i
= 0; i
< count
; i
++)
4675 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4676 *hex
++ = tohex (*bin
++ & 0xf);
4682 /* Check for the availability of vCont. This function should also check
4686 remote_vcont_probe (struct remote_state
*rs
)
4690 strcpy (rs
->buf
, "vCont?");
4692 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4695 /* Make sure that the features we assume are supported. */
4696 if (strncmp (buf
, "vCont", 5) == 0)
4699 int support_s
, support_S
, support_c
, support_C
;
4705 rs
->supports_vCont
.t
= 0;
4706 rs
->supports_vCont
.r
= 0;
4707 while (p
&& *p
== ';')
4710 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4712 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4714 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4716 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4718 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4719 rs
->supports_vCont
.t
= 1;
4720 else if (*p
== 'r' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4721 rs
->supports_vCont
.r
= 1;
4723 p
= strchr (p
, ';');
4726 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4727 BUF will make packet_ok disable the packet. */
4728 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4732 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4735 /* Helper function for building "vCont" resumptions. Write a
4736 resumption to P. ENDP points to one-passed-the-end of the buffer
4737 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4738 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4739 resumed thread should be single-stepped and/or signalled. If PTID
4740 equals minus_one_ptid, then all threads are resumed; if PTID
4741 represents a process, then all threads of the process are resumed;
4742 the thread to be stepped and/or signalled is given in the global
4746 append_resumption (char *p
, char *endp
,
4747 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4749 struct remote_state
*rs
= get_remote_state ();
4751 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4752 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4754 /* GDB is willing to range step. */
4755 && use_range_stepping
4756 /* Target supports range stepping. */
4757 && rs
->supports_vCont
.r
4758 /* We don't currently support range stepping multiple
4759 threads with a wildcard (though the protocol allows it,
4760 so stubs shouldn't make an active effort to forbid
4762 && !(remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4764 struct thread_info
*tp
;
4766 if (ptid_equal (ptid
, minus_one_ptid
))
4768 /* If we don't know about the target thread's tid, then
4769 we're resuming magic_null_ptid (see caller). */
4770 tp
= find_thread_ptid (magic_null_ptid
);
4773 tp
= find_thread_ptid (ptid
);
4774 gdb_assert (tp
!= NULL
);
4776 if (tp
->control
.may_range_step
)
4778 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
4780 p
+= xsnprintf (p
, endp
- p
, ";r%s,%s",
4781 phex_nz (tp
->control
.step_range_start
,
4783 phex_nz (tp
->control
.step_range_end
,
4787 p
+= xsnprintf (p
, endp
- p
, ";s");
4790 p
+= xsnprintf (p
, endp
- p
, ";s");
4791 else if (siggnal
!= GDB_SIGNAL_0
)
4792 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4794 p
+= xsnprintf (p
, endp
- p
, ";c");
4796 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4800 /* All (-1) threads of process. */
4801 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4803 p
+= xsnprintf (p
, endp
- p
, ":");
4804 p
= write_ptid (p
, endp
, nptid
);
4806 else if (!ptid_equal (ptid
, minus_one_ptid
))
4808 p
+= xsnprintf (p
, endp
- p
, ":");
4809 p
= write_ptid (p
, endp
, ptid
);
4815 /* Append a vCont continue-with-signal action for threads that have a
4816 non-zero stop signal. */
4819 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4821 struct thread_info
*thread
;
4823 ALL_THREADS (thread
)
4824 if (ptid_match (thread
->ptid
, ptid
)
4825 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4826 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
4827 && signal_pass_state (thread
->suspend
.stop_signal
))
4829 p
= append_resumption (p
, endp
, thread
->ptid
,
4830 0, thread
->suspend
.stop_signal
);
4831 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4837 /* Resume the remote inferior by using a "vCont" packet. The thread
4838 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4839 resumed thread should be single-stepped and/or signalled. If PTID
4840 equals minus_one_ptid, then all threads are resumed; the thread to
4841 be stepped and/or signalled is given in the global INFERIOR_PTID.
4842 This function returns non-zero iff it resumes the inferior.
4844 This function issues a strict subset of all possible vCont commands at the
4848 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4850 struct remote_state
*rs
= get_remote_state ();
4854 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4855 remote_vcont_probe (rs
);
4857 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4861 endp
= rs
->buf
+ get_remote_packet_size ();
4863 /* If we could generate a wider range of packets, we'd have to worry
4864 about overflowing BUF. Should there be a generic
4865 "multi-part-packet" packet? */
4867 p
+= xsnprintf (p
, endp
- p
, "vCont");
4869 if (ptid_equal (ptid
, magic_null_ptid
))
4871 /* MAGIC_NULL_PTID means that we don't have any active threads,
4872 so we don't have any TID numbers the inferior will
4873 understand. Make sure to only send forms that do not specify
4875 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4877 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4879 /* Resume all threads (of all processes, or of a single
4880 process), with preference for INFERIOR_PTID. This assumes
4881 inferior_ptid belongs to the set of all threads we are about
4883 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4885 /* Step inferior_ptid, with or without signal. */
4886 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4889 /* Also pass down any pending signaled resumption for other
4890 threads not the current. */
4891 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4893 /* And continue others without a signal. */
4894 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4898 /* Scheduler locking; resume only PTID. */
4899 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4902 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4907 /* In non-stop, the stub replies to vCont with "OK". The stop
4908 reply will be reported asynchronously by means of a `%Stop'
4910 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4911 if (strcmp (rs
->buf
, "OK") != 0)
4912 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4918 /* Tell the remote machine to resume. */
4921 remote_resume (struct target_ops
*ops
,
4922 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4924 struct remote_state
*rs
= get_remote_state ();
4927 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
4928 (explained in remote-notif.c:handle_notification) so
4929 remote_notif_process is not called. We need find a place where
4930 it is safe to start a 'vNotif' sequence. It is good to do it
4931 before resuming inferior, because inferior was stopped and no RSP
4932 traffic at that moment. */
4934 remote_notif_process (¬if_client_stop
);
4936 rs
->last_sent_signal
= siggnal
;
4937 rs
->last_sent_step
= step
;
4939 /* The vCont packet doesn't need to specify threads via Hc. */
4940 /* No reverse support (yet) for vCont. */
4941 if (execution_direction
!= EXEC_REVERSE
)
4942 if (remote_vcont_resume (ptid
, step
, siggnal
))
4945 /* All other supported resume packets do use Hc, so set the continue
4947 if (ptid_equal (ptid
, minus_one_ptid
))
4948 set_continue_thread (any_thread_ptid
);
4950 set_continue_thread (ptid
);
4953 if (execution_direction
== EXEC_REVERSE
)
4955 /* We don't pass signals to the target in reverse exec mode. */
4956 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4957 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4961 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4962 error (_("Remote reverse-step not supported."));
4964 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4965 error (_("Remote reverse-continue not supported."));
4967 strcpy (buf
, step
? "bs" : "bc");
4969 else if (siggnal
!= GDB_SIGNAL_0
)
4971 buf
[0] = step
? 'S' : 'C';
4972 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4973 buf
[2] = tohex (((int) siggnal
) & 0xf);
4977 strcpy (buf
, step
? "s" : "c");
4982 /* We are about to start executing the inferior, let's register it
4983 with the event loop. NOTE: this is the one place where all the
4984 execution commands end up. We could alternatively do this in each
4985 of the execution commands in infcmd.c. */
4986 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4987 into infcmd.c in order to allow inferior function calls to work
4988 NOT asynchronously. */
4989 if (target_can_async_p ())
4990 target_async (inferior_event_handler
, 0);
4992 /* We've just told the target to resume. The remote server will
4993 wait for the inferior to stop, and then send a stop reply. In
4994 the mean time, we can't start another command/query ourselves
4995 because the stub wouldn't be ready to process it. This applies
4996 only to the base all-stop protocol, however. In non-stop (which
4997 only supports vCont), the stub replies with an "OK", and is
4998 immediate able to process further serial input. */
5000 rs
->waiting_for_stop_reply
= 1;
5004 /* Set up the signal handler for SIGINT, while the target is
5005 executing, ovewriting the 'regular' SIGINT signal handler. */
5007 async_initialize_sigint_signal_handler (void)
5009 signal (SIGINT
, async_handle_remote_sigint
);
5012 /* Signal handler for SIGINT, while the target is executing. */
5014 async_handle_remote_sigint (int sig
)
5016 signal (sig
, async_handle_remote_sigint_twice
);
5017 mark_async_signal_handler (async_sigint_remote_token
);
5020 /* Signal handler for SIGINT, installed after SIGINT has already been
5021 sent once. It will take effect the second time that the user sends
5024 async_handle_remote_sigint_twice (int sig
)
5026 signal (sig
, async_handle_remote_sigint
);
5027 mark_async_signal_handler (async_sigint_remote_twice_token
);
5030 /* Perform the real interruption of the target execution, in response
5033 async_remote_interrupt (gdb_client_data arg
)
5036 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
5038 target_stop (inferior_ptid
);
5041 /* Perform interrupt, if the first attempt did not succeed. Just give
5042 up on the target alltogether. */
5044 async_remote_interrupt_twice (gdb_client_data arg
)
5047 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
5052 /* Reinstall the usual SIGINT handlers, after the target has
5055 async_cleanup_sigint_signal_handler (void *dummy
)
5057 signal (SIGINT
, handle_sigint
);
5060 /* Send ^C to target to halt it. Target will respond, and send us a
5062 static void (*ofunc
) (int);
5064 /* The command line interface's stop routine. This function is installed
5065 as a signal handler for SIGINT. The first time a user requests a
5066 stop, we call remote_stop to send a break or ^C. If there is no
5067 response from the target (it didn't stop when the user requested it),
5068 we ask the user if he'd like to detach from the target. */
5070 sync_remote_interrupt (int signo
)
5072 /* If this doesn't work, try more severe steps. */
5073 signal (signo
, sync_remote_interrupt_twice
);
5075 gdb_call_async_signal_handler (async_sigint_remote_token
, 1);
5078 /* The user typed ^C twice. */
5081 sync_remote_interrupt_twice (int signo
)
5083 signal (signo
, ofunc
);
5084 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 1);
5085 signal (signo
, sync_remote_interrupt
);
5088 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
5089 thread, all threads of a remote process, or all threads of all
5093 remote_stop_ns (ptid_t ptid
)
5095 struct remote_state
*rs
= get_remote_state ();
5097 char *endp
= rs
->buf
+ get_remote_packet_size ();
5099 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
5100 remote_vcont_probe (rs
);
5102 if (!rs
->supports_vCont
.t
)
5103 error (_("Remote server does not support stopping threads"));
5105 if (ptid_equal (ptid
, minus_one_ptid
)
5106 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5107 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
5112 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
5114 if (ptid_is_pid (ptid
))
5115 /* All (-1) threads of process. */
5116 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
5119 /* Small optimization: if we already have a stop reply for
5120 this thread, no use in telling the stub we want this
5122 if (peek_stop_reply (ptid
))
5128 write_ptid (p
, endp
, nptid
);
5131 /* In non-stop, we get an immediate OK reply. The stop reply will
5132 come in asynchronously by notification. */
5134 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5135 if (strcmp (rs
->buf
, "OK") != 0)
5136 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
5139 /* All-stop version of target_stop. Sends a break or a ^C to stop the
5140 remote target. It is undefined which thread of which process
5141 reports the stop. */
5144 remote_stop_as (ptid_t ptid
)
5146 struct remote_state
*rs
= get_remote_state ();
5148 rs
->ctrlc_pending_p
= 1;
5150 /* If the inferior is stopped already, but the core didn't know
5151 about it yet, just ignore the request. The cached wait status
5152 will be collected in remote_wait. */
5153 if (rs
->cached_wait_status
)
5156 /* Send interrupt_sequence to remote target. */
5157 send_interrupt_sequence ();
5160 /* This is the generic stop called via the target vector. When a target
5161 interrupt is requested, either by the command line or the GUI, we
5162 will eventually end up here. */
5165 remote_stop (ptid_t ptid
)
5168 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5171 remote_stop_ns (ptid
);
5173 remote_stop_as (ptid
);
5176 /* Ask the user what to do when an interrupt is received. */
5179 interrupt_query (void)
5181 target_terminal_ours ();
5183 if (target_can_async_p ())
5185 signal (SIGINT
, handle_sigint
);
5190 if (query (_("Interrupted while waiting for the program.\n\
5191 Give up (and stop debugging it)? ")))
5193 remote_unpush_target ();
5198 target_terminal_inferior ();
5201 /* Enable/disable target terminal ownership. Most targets can use
5202 terminal groups to control terminal ownership. Remote targets are
5203 different in that explicit transfer of ownership to/from GDB/target
5207 remote_terminal_inferior (void)
5209 if (!target_async_permitted
)
5210 /* Nothing to do. */
5213 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5214 idempotent. The event-loop GDB talking to an asynchronous target
5215 with a synchronous command calls this function from both
5216 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5217 transfer the terminal to the target when it shouldn't this guard
5219 if (!remote_async_terminal_ours_p
)
5221 delete_file_handler (input_fd
);
5222 remote_async_terminal_ours_p
= 0;
5223 async_initialize_sigint_signal_handler ();
5224 /* NOTE: At this point we could also register our selves as the
5225 recipient of all input. Any characters typed could then be
5226 passed on down to the target. */
5230 remote_terminal_ours (void)
5232 if (!target_async_permitted
)
5233 /* Nothing to do. */
5236 /* See FIXME in remote_terminal_inferior. */
5237 if (remote_async_terminal_ours_p
)
5239 async_cleanup_sigint_signal_handler (NULL
);
5240 add_file_handler (input_fd
, stdin_event_handler
, 0);
5241 remote_async_terminal_ours_p
= 1;
5245 remote_console_output (char *msg
)
5249 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5252 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5256 fputs_unfiltered (tb
, gdb_stdtarg
);
5258 gdb_flush (gdb_stdtarg
);
5261 typedef struct cached_reg
5264 gdb_byte data
[MAX_REGISTER_SIZE
];
5267 DEF_VEC_O(cached_reg_t
);
5269 typedef struct stop_reply
5271 struct notif_event base
;
5273 /* The identifier of the thread about this event */
5276 struct target_waitstatus ws
;
5278 /* Expedited registers. This makes remote debugging a bit more
5279 efficient for those targets that provide critical registers as
5280 part of their normal status mechanism (as another roundtrip to
5281 fetch them is avoided). */
5282 VEC(cached_reg_t
) *regcache
;
5284 int stopped_by_watchpoint_p
;
5285 CORE_ADDR watch_data_address
;
5293 DECLARE_QUEUE_P (stop_reply_p
);
5294 DEFINE_QUEUE_P (stop_reply_p
);
5295 /* The list of already fetched and acknowledged stop events. This
5296 queue is used for notification Stop, and other notifications
5297 don't need queue for their events, because the notification events
5298 of Stop can't be consumed immediately, so that events should be
5299 queued first, and be consumed by remote_wait_{ns,as} one per
5300 time. Other notifications can consume their events immediately,
5301 so queue is not needed for them. */
5302 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5305 stop_reply_xfree (struct stop_reply
*r
)
5309 VEC_free (cached_reg_t
, r
->regcache
);
5315 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
5316 struct notif_event
*event
)
5318 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
5322 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
5323 struct notif_event
*event
)
5325 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
5328 putpkt ((char *) self
->ack_command
);
5330 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
5331 /* We got an unknown stop reply. */
5332 error (_("Unknown stop reply"));
5334 push_stop_reply (stop_reply
);
5338 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
5340 /* We can't get pending events in remote_notif_process for
5341 notification stop, and we have to do this in remote_wait_ns
5342 instead. If we fetch all queued events from stub, remote stub
5343 may exit and we have no chance to process them back in
5345 mark_async_event_handler (remote_async_inferior_event_token
);
5350 stop_reply_dtr (struct notif_event
*event
)
5352 struct stop_reply
*r
= (struct stop_reply
*) event
;
5354 VEC_free (cached_reg_t
, r
->regcache
);
5357 static struct notif_event
*
5358 remote_notif_stop_alloc_reply (void)
5360 struct notif_event
*r
5361 = (struct notif_event
*) XMALLOC (struct stop_reply
);
5363 r
->dtr
= stop_reply_dtr
;
5368 /* A client of notification Stop. */
5370 struct notif_client notif_client_stop
=
5374 remote_notif_stop_parse
,
5375 remote_notif_stop_ack
,
5376 remote_notif_stop_can_get_pending_events
,
5377 remote_notif_stop_alloc_reply
,
5381 /* A parameter to pass data in and out. */
5383 struct queue_iter_param
5386 struct stop_reply
*output
;
5389 /* Remove all queue elements meet the condition it checks. */
5392 remote_notif_remove_all (QUEUE (stop_reply_p
) *q
,
5393 QUEUE_ITER (stop_reply_p
) *iter
,
5397 struct queue_iter_param
*param
= data
;
5398 struct inferior
*inf
= param
->input
;
5400 if (inf
== NULL
|| ptid_get_pid (event
->ptid
) == inf
->pid
)
5402 stop_reply_xfree (event
);
5403 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5409 /* Discard all pending stop replies of inferior INF. If INF is NULL,
5410 discard everything. */
5413 discard_pending_stop_replies (struct inferior
*inf
)
5416 struct queue_iter_param param
;
5417 struct stop_reply
*reply
5418 = (struct stop_reply
*) notif_client_stop
.pending_event
;
5420 /* Discard the in-flight notification. */
5423 || ptid_get_pid (reply
->ptid
) == inf
->pid
))
5425 stop_reply_xfree (reply
);
5426 notif_client_stop
.pending_event
= NULL
;
5430 param
.output
= NULL
;
5431 /* Discard the stop replies we have already pulled with
5433 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5434 remote_notif_remove_all
, ¶m
);
5437 /* A parameter to pass data in and out. */
5440 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
5441 QUEUE_ITER (stop_reply_p
) *iter
,
5445 struct queue_iter_param
*param
= data
;
5446 ptid_t
*ptid
= param
->input
;
5448 if (ptid_match (event
->ptid
, *ptid
))
5450 param
->output
= event
;
5451 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5458 /* Remove the first reply in 'stop_reply_queue' which matches
5461 static struct stop_reply
*
5462 remote_notif_remove_queued_reply (ptid_t ptid
)
5464 struct queue_iter_param param
;
5466 param
.input
= &ptid
;
5467 param
.output
= NULL
;
5469 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5470 remote_notif_remove_once_on_match
, ¶m
);
5472 fprintf_unfiltered (gdb_stdlog
,
5473 "notif: discard queued event: 'Stop' in %s\n",
5474 target_pid_to_str (ptid
));
5476 return param
.output
;
5479 /* Look for a queued stop reply belonging to PTID. If one is found,
5480 remove it from the queue, and return it. Returns NULL if none is
5481 found. If there are still queued events left to process, tell the
5482 event loop to get back to target_wait soon. */
5484 static struct stop_reply
*
5485 queued_stop_reply (ptid_t ptid
)
5487 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
5489 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5490 /* There's still at least an event left. */
5491 mark_async_event_handler (remote_async_inferior_event_token
);
5496 /* Push a fully parsed stop reply in the stop reply queue. Since we
5497 know that we now have at least one queued event left to pass to the
5498 core side, tell the event loop to get back to target_wait soon. */
5501 push_stop_reply (struct stop_reply
*new_event
)
5503 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
5506 fprintf_unfiltered (gdb_stdlog
,
5507 "notif: push 'Stop' %s to queue %d\n",
5508 target_pid_to_str (new_event
->ptid
),
5509 QUEUE_length (stop_reply_p
,
5512 mark_async_event_handler (remote_async_inferior_event_token
);
5516 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
5517 QUEUE_ITER (stop_reply_p
) *iter
,
5518 struct stop_reply
*event
,
5521 ptid_t
*ptid
= data
;
5523 return !(ptid_equal (*ptid
, event
->ptid
)
5524 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
5527 /* Returns true if we have a stop reply for PTID. */
5530 peek_stop_reply (ptid_t ptid
)
5532 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5533 stop_reply_match_ptid_and_ws
, &ptid
);
5536 /* Parse the stop reply in BUF. Either the function succeeds, and the
5537 result is stored in EVENT, or throws an error. */
5540 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5542 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5546 event
->ptid
= null_ptid
;
5547 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5548 event
->ws
.value
.integer
= 0;
5549 event
->solibs_changed
= 0;
5550 event
->replay_event
= 0;
5551 event
->stopped_by_watchpoint_p
= 0;
5552 event
->regcache
= NULL
;
5557 case 'T': /* Status with PC, SP, FP, ... */
5558 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5559 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5561 n... = register number
5562 r... = register contents
5565 p
= &buf
[3]; /* after Txx */
5573 /* If the packet contains a register number, save it in
5574 pnum and set p1 to point to the character following it.
5575 Otherwise p1 points to p. */
5577 /* If this packet is an awatch packet, don't parse the 'a'
5578 as a register number. */
5580 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5581 && strncmp (p
, "core", strlen ("core") != 0))
5583 /* Read the ``P'' register number. */
5584 pnum
= strtol (p
, &p_temp
, 16);
5590 if (p1
== p
) /* No register number present here. */
5592 p1
= strchr (p
, ':');
5594 error (_("Malformed packet(a) (missing colon): %s\n\
5597 if (strncmp (p
, "thread", p1
- p
) == 0)
5598 event
->ptid
= read_ptid (++p1
, &p
);
5599 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5600 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5601 || (strncmp (p
, "awatch", p1
- p
) == 0))
5603 event
->stopped_by_watchpoint_p
= 1;
5604 p
= unpack_varlen_hex (++p1
, &addr
);
5605 event
->watch_data_address
= (CORE_ADDR
) addr
;
5607 else if (strncmp (p
, "library", p1
- p
) == 0)
5611 while (*p_temp
&& *p_temp
!= ';')
5614 event
->solibs_changed
= 1;
5617 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5619 /* NO_HISTORY event.
5620 p1 will indicate "begin" or "end", but
5621 it makes no difference for now, so ignore it. */
5622 event
->replay_event
= 1;
5623 p_temp
= strchr (p1
+ 1, ';');
5627 else if (strncmp (p
, "core", p1
- p
) == 0)
5631 p
= unpack_varlen_hex (++p1
, &c
);
5636 /* Silently skip unknown optional info. */
5637 p_temp
= strchr (p1
+ 1, ';');
5644 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5645 cached_reg_t cached_reg
;
5650 error (_("Malformed packet(b) (missing colon): %s\n\
5656 error (_("Remote sent bad register number %s: %s\n\
5658 hex_string (pnum
), p
, buf
);
5660 cached_reg
.num
= reg
->regnum
;
5662 fieldsize
= hex2bin (p
, cached_reg
.data
,
5663 register_size (target_gdbarch (),
5666 if (fieldsize
< register_size (target_gdbarch (),
5668 warning (_("Remote reply is too short: %s"), buf
);
5670 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5674 error (_("Remote register badly formatted: %s\nhere: %s"),
5679 case 'S': /* Old style status, just signal only. */
5680 if (event
->solibs_changed
)
5681 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5682 else if (event
->replay_event
)
5683 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5686 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5687 event
->ws
.value
.sig
= (enum gdb_signal
)
5688 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
5691 case 'W': /* Target exited. */
5698 /* GDB used to accept only 2 hex chars here. Stubs should
5699 only send more if they detect GDB supports multi-process
5701 p
= unpack_varlen_hex (&buf
[1], &value
);
5705 /* The remote process exited. */
5706 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5707 event
->ws
.value
.integer
= value
;
5711 /* The remote process exited with a signal. */
5712 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5713 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5716 /* If no process is specified, assume inferior_ptid. */
5717 pid
= ptid_get_pid (inferior_ptid
);
5726 else if (strncmp (p
,
5727 "process:", sizeof ("process:") - 1) == 0)
5731 p
+= sizeof ("process:") - 1;
5732 unpack_varlen_hex (p
, &upid
);
5736 error (_("unknown stop reply packet: %s"), buf
);
5739 error (_("unknown stop reply packet: %s"), buf
);
5740 event
->ptid
= pid_to_ptid (pid
);
5745 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5746 error (_("No process or thread specified in stop reply: %s"), buf
);
5749 /* When the stub wants to tell GDB about a new notification reply, it
5750 sends a notification (%Stop, for example). Those can come it at
5751 any time, hence, we have to make sure that any pending
5752 putpkt/getpkt sequence we're making is finished, before querying
5753 the stub for more events with the corresponding ack command
5754 (vStopped, for example). E.g., if we started a vStopped sequence
5755 immediately upon receiving the notification, something like this
5763 1.6) <-- (registers reply to step #1.3)
5765 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5768 To solve this, whenever we parse a %Stop notification successfully,
5769 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5770 doing whatever we were doing:
5776 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5777 2.5) <-- (registers reply to step #2.3)
5779 Eventualy after step #2.5, we return to the event loop, which
5780 notices there's an event on the
5781 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5782 associated callback --- the function below. At this point, we're
5783 always safe to start a vStopped sequence. :
5786 2.7) <-- T05 thread:2
5792 remote_notif_get_pending_events (struct notif_client
*nc
)
5794 struct remote_state
*rs
= get_remote_state ();
5796 if (nc
->pending_event
)
5799 fprintf_unfiltered (gdb_stdlog
,
5800 "notif: process: '%s' ack pending event\n",
5804 nc
->ack (nc
, rs
->buf
, nc
->pending_event
);
5805 nc
->pending_event
= NULL
;
5809 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5810 if (strcmp (rs
->buf
, "OK") == 0)
5813 remote_notif_ack (nc
, rs
->buf
);
5819 fprintf_unfiltered (gdb_stdlog
,
5820 "notif: process: '%s' no pending reply\n",
5825 /* Called when it is decided that STOP_REPLY holds the info of the
5826 event that is to be returned to the core. This function always
5827 destroys STOP_REPLY. */
5830 process_stop_reply (struct stop_reply
*stop_reply
,
5831 struct target_waitstatus
*status
)
5835 *status
= stop_reply
->ws
;
5836 ptid
= stop_reply
->ptid
;
5838 /* If no thread/process was reported by the stub, assume the current
5840 if (ptid_equal (ptid
, null_ptid
))
5841 ptid
= inferior_ptid
;
5843 if (status
->kind
!= TARGET_WAITKIND_EXITED
5844 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5846 /* Expedited registers. */
5847 if (stop_reply
->regcache
)
5849 struct regcache
*regcache
5850 = get_thread_arch_regcache (ptid
, target_gdbarch ());
5855 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5857 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5858 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5861 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5862 remote_watch_data_address
= stop_reply
->watch_data_address
;
5864 remote_notice_new_inferior (ptid
, 0);
5865 demand_private_info (ptid
)->core
= stop_reply
->core
;
5868 stop_reply_xfree (stop_reply
);
5872 /* The non-stop mode version of target_wait. */
5875 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5877 struct remote_state
*rs
= get_remote_state ();
5878 struct stop_reply
*stop_reply
;
5882 /* If in non-stop mode, get out of getpkt even if a
5883 notification is received. */
5885 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5886 0 /* forever */, &is_notif
);
5889 if (ret
!= -1 && !is_notif
)
5892 case 'E': /* Error of some sort. */
5893 /* We're out of sync with the target now. Did it continue
5894 or not? We can't tell which thread it was in non-stop,
5895 so just ignore this. */
5896 warning (_("Remote failure reply: %s"), rs
->buf
);
5898 case 'O': /* Console output. */
5899 remote_console_output (rs
->buf
+ 1);
5902 warning (_("Invalid remote reply: %s"), rs
->buf
);
5906 /* Acknowledge a pending stop reply that may have arrived in the
5908 if (notif_client_stop
.pending_event
!= NULL
)
5909 remote_notif_get_pending_events (¬if_client_stop
);
5911 /* If indeed we noticed a stop reply, we're done. */
5912 stop_reply
= queued_stop_reply (ptid
);
5913 if (stop_reply
!= NULL
)
5914 return process_stop_reply (stop_reply
, status
);
5916 /* Still no event. If we're just polling for an event, then
5917 return to the event loop. */
5918 if (options
& TARGET_WNOHANG
)
5920 status
->kind
= TARGET_WAITKIND_IGNORE
;
5921 return minus_one_ptid
;
5924 /* Otherwise do a blocking wait. */
5925 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5926 1 /* forever */, &is_notif
);
5930 /* Wait until the remote machine stops, then return, storing status in
5931 STATUS just as `wait' would. */
5934 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5936 struct remote_state
*rs
= get_remote_state ();
5937 ptid_t event_ptid
= null_ptid
;
5939 struct stop_reply
*stop_reply
;
5943 status
->kind
= TARGET_WAITKIND_IGNORE
;
5944 status
->value
.integer
= 0;
5946 stop_reply
= queued_stop_reply (ptid
);
5947 if (stop_reply
!= NULL
)
5948 return process_stop_reply (stop_reply
, status
);
5950 if (rs
->cached_wait_status
)
5951 /* Use the cached wait status, but only once. */
5952 rs
->cached_wait_status
= 0;
5958 if (!target_is_async_p ())
5960 ofunc
= signal (SIGINT
, sync_remote_interrupt
);
5961 /* If the user hit C-c before this packet, or between packets,
5962 pretend that it was hit right here. */
5963 if (check_quit_flag ())
5966 sync_remote_interrupt (SIGINT
);
5970 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5971 _never_ wait for ever -> test on target_is_async_p().
5972 However, before we do that we need to ensure that the caller
5973 knows how to take the target into/out of async mode. */
5974 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5975 wait_forever_enabled_p
, &is_notif
);
5977 if (!target_is_async_p ())
5978 signal (SIGINT
, ofunc
);
5980 /* GDB gets a notification. Return to core as this event is
5982 if (ret
!= -1 && is_notif
)
5983 return minus_one_ptid
;
5988 remote_stopped_by_watchpoint_p
= 0;
5990 /* We got something. */
5991 rs
->waiting_for_stop_reply
= 0;
5993 /* Assume that the target has acknowledged Ctrl-C unless we receive
5994 an 'F' or 'O' packet. */
5995 if (buf
[0] != 'F' && buf
[0] != 'O')
5996 rs
->ctrlc_pending_p
= 0;
6000 case 'E': /* Error of some sort. */
6001 /* We're out of sync with the target now. Did it continue or
6002 not? Not is more likely, so report a stop. */
6003 warning (_("Remote failure reply: %s"), buf
);
6004 status
->kind
= TARGET_WAITKIND_STOPPED
;
6005 status
->value
.sig
= GDB_SIGNAL_0
;
6007 case 'F': /* File-I/O request. */
6008 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
6009 rs
->ctrlc_pending_p
= 0;
6011 case 'T': case 'S': case 'X': case 'W':
6013 struct stop_reply
*stop_reply
6014 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
6017 event_ptid
= process_stop_reply (stop_reply
, status
);
6020 case 'O': /* Console output. */
6021 remote_console_output (buf
+ 1);
6023 /* The target didn't really stop; keep waiting. */
6024 rs
->waiting_for_stop_reply
= 1;
6028 if (rs
->last_sent_signal
!= GDB_SIGNAL_0
)
6030 /* Zero length reply means that we tried 'S' or 'C' and the
6031 remote system doesn't support it. */
6032 target_terminal_ours_for_output ();
6034 ("Can't send signals to this remote system. %s not sent.\n",
6035 gdb_signal_to_name (rs
->last_sent_signal
));
6036 rs
->last_sent_signal
= GDB_SIGNAL_0
;
6037 target_terminal_inferior ();
6039 strcpy ((char *) buf
, rs
->last_sent_step
? "s" : "c");
6040 putpkt ((char *) buf
);
6042 /* We just told the target to resume, so a stop reply is in
6044 rs
->waiting_for_stop_reply
= 1;
6047 /* else fallthrough */
6049 warning (_("Invalid remote reply: %s"), buf
);
6051 rs
->waiting_for_stop_reply
= 1;
6055 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
6057 /* Nothing interesting happened. If we're doing a non-blocking
6058 poll, we're done. Otherwise, go back to waiting. */
6059 if (options
& TARGET_WNOHANG
)
6060 return minus_one_ptid
;
6064 else if (status
->kind
!= TARGET_WAITKIND_EXITED
6065 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
6067 if (!ptid_equal (event_ptid
, null_ptid
))
6068 record_currthread (rs
, event_ptid
);
6070 event_ptid
= inferior_ptid
;
6073 /* A process exit. Invalidate our notion of current thread. */
6074 record_currthread (rs
, minus_one_ptid
);
6079 /* Wait until the remote machine stops, then return, storing status in
6080 STATUS just as `wait' would. */
6083 remote_wait (struct target_ops
*ops
,
6084 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6089 event_ptid
= remote_wait_ns (ptid
, status
, options
);
6091 event_ptid
= remote_wait_as (ptid
, status
, options
);
6093 if (target_can_async_p ())
6095 /* If there are are events left in the queue tell the event loop
6097 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
6098 mark_async_event_handler (remote_async_inferior_event_token
);
6104 /* Fetch a single register using a 'p' packet. */
6107 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
6109 struct remote_state
*rs
= get_remote_state ();
6111 char regp
[MAX_REGISTER_SIZE
];
6114 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
6117 if (reg
->pnum
== -1)
6122 p
+= hexnumstr (p
, reg
->pnum
);
6125 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6129 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
6133 case PACKET_UNKNOWN
:
6136 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
6137 gdbarch_register_name (get_regcache_arch (regcache
),
6142 /* If this register is unfetchable, tell the regcache. */
6145 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6149 /* Otherwise, parse and supply the value. */
6155 error (_("fetch_register_using_p: early buf termination"));
6157 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6160 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
6164 /* Fetch the registers included in the target's 'g' packet. */
6167 send_g_packet (void)
6169 struct remote_state
*rs
= get_remote_state ();
6172 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
6173 remote_send (&rs
->buf
, &rs
->buf_size
);
6175 /* We can get out of synch in various cases. If the first character
6176 in the buffer is not a hex character, assume that has happened
6177 and try to fetch another packet to read. */
6178 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
6179 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
6180 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
6181 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
6184 fprintf_unfiltered (gdb_stdlog
,
6185 "Bad register packet; fetching a new packet\n");
6186 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6189 buf_len
= strlen (rs
->buf
);
6191 /* Sanity check the received packet. */
6192 if (buf_len
% 2 != 0)
6193 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
6199 process_g_packet (struct regcache
*regcache
)
6201 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6202 struct remote_state
*rs
= get_remote_state ();
6203 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6208 buf_len
= strlen (rs
->buf
);
6210 /* Further sanity checks, with knowledge of the architecture. */
6211 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
6212 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
6214 /* Save the size of the packet sent to us by the target. It is used
6215 as a heuristic when determining the max size of packets that the
6216 target can safely receive. */
6217 if (rsa
->actual_register_packet_size
== 0)
6218 rsa
->actual_register_packet_size
= buf_len
;
6220 /* If this is smaller than we guessed the 'g' packet would be,
6221 update our records. A 'g' reply that doesn't include a register's
6222 value implies either that the register is not available, or that
6223 the 'p' packet must be used. */
6224 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
6226 rsa
->sizeof_g_packet
= buf_len
/ 2;
6228 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6230 if (rsa
->regs
[i
].pnum
== -1)
6233 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
6234 rsa
->regs
[i
].in_g_packet
= 0;
6236 rsa
->regs
[i
].in_g_packet
= 1;
6240 regs
= alloca (rsa
->sizeof_g_packet
);
6242 /* Unimplemented registers read as all bits zero. */
6243 memset (regs
, 0, rsa
->sizeof_g_packet
);
6245 /* Reply describes registers byte by byte, each byte encoded as two
6246 hex characters. Suck them all up, then supply them to the
6247 register cacheing/storage mechanism. */
6250 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6252 if (p
[0] == 0 || p
[1] == 0)
6253 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6254 internal_error (__FILE__
, __LINE__
,
6255 _("unexpected end of 'g' packet reply"));
6257 if (p
[0] == 'x' && p
[1] == 'x')
6258 regs
[i
] = 0; /* 'x' */
6260 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6264 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6266 struct packet_reg
*r
= &rsa
->regs
[i
];
6270 if (r
->offset
* 2 >= strlen (rs
->buf
))
6271 /* This shouldn't happen - we adjusted in_g_packet above. */
6272 internal_error (__FILE__
, __LINE__
,
6273 _("unexpected end of 'g' packet reply"));
6274 else if (rs
->buf
[r
->offset
* 2] == 'x')
6276 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6277 /* The register isn't available, mark it as such (at
6278 the same time setting the value to zero). */
6279 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6282 regcache_raw_supply (regcache
, r
->regnum
,
6289 fetch_registers_using_g (struct regcache
*regcache
)
6292 process_g_packet (regcache
);
6295 /* Make the remote selected traceframe match GDB's selected
6299 set_remote_traceframe (void)
6302 struct remote_state
*rs
= get_remote_state ();
6304 if (rs
->remote_traceframe_number
== get_traceframe_number ())
6307 /* Avoid recursion, remote_trace_find calls us again. */
6308 rs
->remote_traceframe_number
= get_traceframe_number ();
6310 newnum
= target_trace_find (tfind_number
,
6311 get_traceframe_number (), 0, 0, NULL
);
6313 /* Should not happen. If it does, all bets are off. */
6314 if (newnum
!= get_traceframe_number ())
6315 warning (_("could not set remote traceframe"));
6319 remote_fetch_registers (struct target_ops
*ops
,
6320 struct regcache
*regcache
, int regnum
)
6322 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6325 set_remote_traceframe ();
6326 set_general_thread (inferior_ptid
);
6330 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6332 gdb_assert (reg
!= NULL
);
6334 /* If this register might be in the 'g' packet, try that first -
6335 we are likely to read more than one register. If this is the
6336 first 'g' packet, we might be overly optimistic about its
6337 contents, so fall back to 'p'. */
6338 if (reg
->in_g_packet
)
6340 fetch_registers_using_g (regcache
);
6341 if (reg
->in_g_packet
)
6345 if (fetch_register_using_p (regcache
, reg
))
6348 /* This register is not available. */
6349 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6354 fetch_registers_using_g (regcache
);
6356 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6357 if (!rsa
->regs
[i
].in_g_packet
)
6358 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6360 /* This register is not available. */
6361 regcache_raw_supply (regcache
, i
, NULL
);
6365 /* Prepare to store registers. Since we may send them all (using a
6366 'G' request), we have to read out the ones we don't want to change
6370 remote_prepare_to_store (struct regcache
*regcache
)
6372 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6374 gdb_byte buf
[MAX_REGISTER_SIZE
];
6376 /* Make sure the entire registers array is valid. */
6377 switch (remote_protocol_packets
[PACKET_P
].support
)
6379 case PACKET_DISABLE
:
6380 case PACKET_SUPPORT_UNKNOWN
:
6381 /* Make sure all the necessary registers are cached. */
6382 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6383 if (rsa
->regs
[i
].in_g_packet
)
6384 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6391 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6392 packet was not recognized. */
6395 store_register_using_P (const struct regcache
*regcache
,
6396 struct packet_reg
*reg
)
6398 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6399 struct remote_state
*rs
= get_remote_state ();
6400 /* Try storing a single register. */
6401 char *buf
= rs
->buf
;
6402 gdb_byte regp
[MAX_REGISTER_SIZE
];
6405 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
6408 if (reg
->pnum
== -1)
6411 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6412 p
= buf
+ strlen (buf
);
6413 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6414 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6416 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6418 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6423 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6424 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6425 case PACKET_UNKNOWN
:
6428 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6432 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6433 contents of the register cache buffer. FIXME: ignores errors. */
6436 store_registers_using_G (const struct regcache
*regcache
)
6438 struct remote_state
*rs
= get_remote_state ();
6439 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6443 /* Extract all the registers in the regcache copying them into a
6448 regs
= alloca (rsa
->sizeof_g_packet
);
6449 memset (regs
, 0, rsa
->sizeof_g_packet
);
6450 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6452 struct packet_reg
*r
= &rsa
->regs
[i
];
6455 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6459 /* Command describes registers byte by byte,
6460 each byte encoded as two hex characters. */
6463 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6465 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6467 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6468 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6469 error (_("Could not write registers; remote failure reply '%s'"),
6473 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6474 of the register cache buffer. FIXME: ignores errors. */
6477 remote_store_registers (struct target_ops
*ops
,
6478 struct regcache
*regcache
, int regnum
)
6480 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6483 set_remote_traceframe ();
6484 set_general_thread (inferior_ptid
);
6488 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6490 gdb_assert (reg
!= NULL
);
6492 /* Always prefer to store registers using the 'P' packet if
6493 possible; we often change only a small number of registers.
6494 Sometimes we change a larger number; we'd need help from a
6495 higher layer to know to use 'G'. */
6496 if (store_register_using_P (regcache
, reg
))
6499 /* For now, don't complain if we have no way to write the
6500 register. GDB loses track of unavailable registers too
6501 easily. Some day, this may be an error. We don't have
6502 any way to read the register, either... */
6503 if (!reg
->in_g_packet
)
6506 store_registers_using_G (regcache
);
6510 store_registers_using_G (regcache
);
6512 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6513 if (!rsa
->regs
[i
].in_g_packet
)
6514 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6515 /* See above for why we do not issue an error here. */
6520 /* Return the number of hex digits in num. */
6523 hexnumlen (ULONGEST num
)
6527 for (i
= 0; num
!= 0; i
++)
6533 /* Set BUF to the minimum number of hex digits representing NUM. */
6536 hexnumstr (char *buf
, ULONGEST num
)
6538 int len
= hexnumlen (num
);
6540 return hexnumnstr (buf
, num
, len
);
6544 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6547 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6553 for (i
= width
- 1; i
>= 0; i
--)
6555 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6562 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6565 remote_address_masked (CORE_ADDR addr
)
6567 unsigned int address_size
= remote_address_size
;
6569 /* If "remoteaddresssize" was not set, default to target address size. */
6571 address_size
= gdbarch_addr_bit (target_gdbarch ());
6573 if (address_size
> 0
6574 && address_size
< (sizeof (ULONGEST
) * 8))
6576 /* Only create a mask when that mask can safely be constructed
6577 in a ULONGEST variable. */
6580 mask
= (mask
<< address_size
) - 1;
6586 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
6587 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
6588 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
6589 (which may be more than *OUT_LEN due to escape characters). The
6590 total number of bytes in the output buffer will be at most
6594 remote_escape_output (const gdb_byte
*buffer
, int len
,
6595 gdb_byte
*out_buf
, int *out_len
,
6598 int input_index
, output_index
;
6601 for (input_index
= 0; input_index
< len
; input_index
++)
6603 gdb_byte b
= buffer
[input_index
];
6605 if (b
== '$' || b
== '#' || b
== '}')
6607 /* These must be escaped. */
6608 if (output_index
+ 2 > out_maxlen
)
6610 out_buf
[output_index
++] = '}';
6611 out_buf
[output_index
++] = b
^ 0x20;
6615 if (output_index
+ 1 > out_maxlen
)
6617 out_buf
[output_index
++] = b
;
6621 *out_len
= input_index
;
6622 return output_index
;
6625 /* Convert BUFFER, escaped data LEN bytes long, into binary data
6626 in OUT_BUF. Return the number of bytes written to OUT_BUF.
6627 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
6629 This function reverses remote_escape_output. It allows more
6630 escaped characters than that function does, in particular because
6631 '*' must be escaped to avoid the run-length encoding processing
6632 in reading packets. */
6635 remote_unescape_input (const gdb_byte
*buffer
, int len
,
6636 gdb_byte
*out_buf
, int out_maxlen
)
6638 int input_index
, output_index
;
6643 for (input_index
= 0; input_index
< len
; input_index
++)
6645 gdb_byte b
= buffer
[input_index
];
6647 if (output_index
+ 1 > out_maxlen
)
6649 warning (_("Received too much data from remote target;"
6650 " ignoring overflow."));
6651 return output_index
;
6656 out_buf
[output_index
++] = b
^ 0x20;
6662 out_buf
[output_index
++] = b
;
6666 error (_("Unmatched escape character in target response."));
6668 return output_index
;
6671 /* Determine whether the remote target supports binary downloading.
6672 This is accomplished by sending a no-op memory write of zero length
6673 to the target at the specified address. It does not suffice to send
6674 the whole packet, since many stubs strip the eighth bit and
6675 subsequently compute a wrong checksum, which causes real havoc with
6678 NOTE: This can still lose if the serial line is not eight-bit
6679 clean. In cases like this, the user should clear "remote
6683 check_binary_download (CORE_ADDR addr
)
6685 struct remote_state
*rs
= get_remote_state ();
6687 switch (remote_protocol_packets
[PACKET_X
].support
)
6689 case PACKET_DISABLE
:
6693 case PACKET_SUPPORT_UNKNOWN
:
6699 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6701 p
+= hexnumstr (p
, (ULONGEST
) 0);
6705 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6706 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6708 if (rs
->buf
[0] == '\0')
6711 fprintf_unfiltered (gdb_stdlog
,
6712 "binary downloading NOT "
6713 "supported by target\n");
6714 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6719 fprintf_unfiltered (gdb_stdlog
,
6720 "binary downloading supported by target\n");
6721 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6728 /* Write memory data directly to the remote machine.
6729 This does not inform the data cache; the data cache uses this.
6730 HEADER is the starting part of the packet.
6731 MEMADDR is the address in the remote memory space.
6732 MYADDR is the address of the buffer in our space.
6733 LEN is the number of bytes.
6734 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6735 should send data as binary ('X'), or hex-encoded ('M').
6737 The function creates packet of the form
6738 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6740 where encoding of <DATA> is termined by PACKET_FORMAT.
6742 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6745 Returns the number of bytes transferred, or 0 (setting errno) for
6746 error. Only transfer a single packet. */
6749 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6750 const gdb_byte
*myaddr
, ssize_t len
,
6751 char packet_format
, int use_length
)
6753 struct remote_state
*rs
= get_remote_state ();
6763 if (packet_format
!= 'X' && packet_format
!= 'M')
6764 internal_error (__FILE__
, __LINE__
,
6765 _("remote_write_bytes_aux: bad packet format"));
6770 payload_size
= get_memory_write_packet_size ();
6772 /* The packet buffer will be large enough for the payload;
6773 get_memory_packet_size ensures this. */
6776 /* Compute the size of the actual payload by subtracting out the
6777 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6779 payload_size
-= strlen ("$,:#NN");
6781 /* The comma won't be used. */
6783 header_length
= strlen (header
);
6784 payload_size
-= header_length
;
6785 payload_size
-= hexnumlen (memaddr
);
6787 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6789 strcat (rs
->buf
, header
);
6790 p
= rs
->buf
+ strlen (header
);
6792 /* Compute a best guess of the number of bytes actually transfered. */
6793 if (packet_format
== 'X')
6795 /* Best guess at number of bytes that will fit. */
6796 todo
= min (len
, payload_size
);
6798 payload_size
-= hexnumlen (todo
);
6799 todo
= min (todo
, payload_size
);
6803 /* Num bytes that will fit. */
6804 todo
= min (len
, payload_size
/ 2);
6806 payload_size
-= hexnumlen (todo
);
6807 todo
= min (todo
, payload_size
/ 2);
6811 internal_error (__FILE__
, __LINE__
,
6812 _("minimum packet size too small to write data"));
6814 /* If we already need another packet, then try to align the end
6815 of this packet to a useful boundary. */
6816 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6817 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6819 /* Append "<memaddr>". */
6820 memaddr
= remote_address_masked (memaddr
);
6821 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6828 /* Append <len>. Retain the location/size of <len>. It may need to
6829 be adjusted once the packet body has been created. */
6831 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6839 /* Append the packet body. */
6840 if (packet_format
== 'X')
6842 /* Binary mode. Send target system values byte by byte, in
6843 increasing byte addresses. Only escape certain critical
6845 payload_length
= remote_escape_output (myaddr
, todo
, (gdb_byte
*) p
,
6846 &nr_bytes
, payload_size
);
6848 /* If not all TODO bytes fit, then we'll need another packet. Make
6849 a second try to keep the end of the packet aligned. Don't do
6850 this if the packet is tiny. */
6851 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6855 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6857 if (new_nr_bytes
!= nr_bytes
)
6858 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6859 (gdb_byte
*) p
, &nr_bytes
,
6863 p
+= payload_length
;
6864 if (use_length
&& nr_bytes
< todo
)
6866 /* Escape chars have filled up the buffer prematurely,
6867 and we have actually sent fewer bytes than planned.
6868 Fix-up the length field of the packet. Use the same
6869 number of characters as before. */
6870 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6871 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6876 /* Normal mode: Send target system values byte by byte, in
6877 increasing byte addresses. Each byte is encoded as a two hex
6879 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6883 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6884 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6886 if (rs
->buf
[0] == 'E')
6888 /* There is no correspondance between what the remote protocol
6889 uses for errors and errno codes. We would like a cleaner way
6890 of representing errors (big enough to include errno codes,
6891 bfd_error codes, and others). But for now just return EIO. */
6896 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6897 fewer bytes than we'd planned. */
6901 /* Write memory data directly to the remote machine.
6902 This does not inform the data cache; the data cache uses this.
6903 MEMADDR is the address in the remote memory space.
6904 MYADDR is the address of the buffer in our space.
6905 LEN is the number of bytes.
6907 Returns number of bytes transferred, or 0 (setting errno) for
6908 error. Only transfer a single packet. */
6911 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
6913 char *packet_format
= 0;
6915 /* Check whether the target supports binary download. */
6916 check_binary_download (memaddr
);
6918 switch (remote_protocol_packets
[PACKET_X
].support
)
6921 packet_format
= "X";
6923 case PACKET_DISABLE
:
6924 packet_format
= "M";
6926 case PACKET_SUPPORT_UNKNOWN
:
6927 internal_error (__FILE__
, __LINE__
,
6928 _("remote_write_bytes: bad internal state"));
6930 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6933 return remote_write_bytes_aux (packet_format
,
6934 memaddr
, myaddr
, len
, packet_format
[0], 1);
6937 /* Read memory data directly from the remote machine.
6938 This does not use the data cache; the data cache uses this.
6939 MEMADDR is the address in the remote memory space.
6940 MYADDR is the address of the buffer in our space.
6941 LEN is the number of bytes.
6943 Returns number of bytes transferred, or 0 for error. */
6946 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6948 struct remote_state
*rs
= get_remote_state ();
6949 int max_buf_size
; /* Max size of packet output buffer. */
6957 max_buf_size
= get_memory_read_packet_size ();
6958 /* The packet buffer will be large enough for the payload;
6959 get_memory_packet_size ensures this. */
6961 /* Number if bytes that will fit. */
6962 todo
= min (len
, max_buf_size
/ 2);
6964 /* Construct "m"<memaddr>","<len>". */
6965 memaddr
= remote_address_masked (memaddr
);
6968 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6970 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6973 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6974 if (rs
->buf
[0] == 'E'
6975 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6976 && rs
->buf
[3] == '\0')
6978 /* There is no correspondance between what the remote protocol
6979 uses for errors and errno codes. We would like a cleaner way
6980 of representing errors (big enough to include errno codes,
6981 bfd_error codes, and others). But for now just return
6986 /* Reply describes memory byte by byte, each byte encoded as two hex
6989 i
= hex2bin (p
, myaddr
, todo
);
6990 /* Return what we have. Let higher layers handle partial reads. */
6995 /* Read or write LEN bytes from inferior memory at MEMADDR,
6996 transferring to or from debugger address BUFFER. Write to inferior
6997 if SHOULD_WRITE is nonzero. Returns length of data written or
6998 read; 0 for error. TARGET is unused. */
7001 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
7002 int should_write
, struct mem_attrib
*attrib
,
7003 struct target_ops
*target
)
7007 set_remote_traceframe ();
7008 set_general_thread (inferior_ptid
);
7011 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
7013 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
7018 /* Sends a packet with content determined by the printf format string
7019 FORMAT and the remaining arguments, then gets the reply. Returns
7020 whether the packet was a success, a failure, or unknown. */
7022 static enum packet_result
7023 remote_send_printf (const char *format
, ...)
7025 struct remote_state
*rs
= get_remote_state ();
7026 int max_size
= get_remote_packet_size ();
7029 va_start (ap
, format
);
7032 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
7033 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
7035 if (putpkt (rs
->buf
) < 0)
7036 error (_("Communication problem with target."));
7039 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7041 return packet_check_result (rs
->buf
);
7045 restore_remote_timeout (void *p
)
7047 int value
= *(int *)p
;
7049 remote_timeout
= value
;
7052 /* Flash writing can take quite some time. We'll set
7053 effectively infinite timeout for flash operations.
7054 In future, we'll need to decide on a better approach. */
7055 static const int remote_flash_timeout
= 1000;
7058 remote_flash_erase (struct target_ops
*ops
,
7059 ULONGEST address
, LONGEST length
)
7061 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
7062 int saved_remote_timeout
= remote_timeout
;
7063 enum packet_result ret
;
7064 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7065 &saved_remote_timeout
);
7067 remote_timeout
= remote_flash_timeout
;
7069 ret
= remote_send_printf ("vFlashErase:%s,%s",
7070 phex (address
, addr_size
),
7074 case PACKET_UNKNOWN
:
7075 error (_("Remote target does not support flash erase"));
7077 error (_("Error erasing flash with vFlashErase packet"));
7082 do_cleanups (back_to
);
7086 remote_flash_write (struct target_ops
*ops
,
7087 ULONGEST address
, LONGEST length
,
7088 const gdb_byte
*data
)
7090 int saved_remote_timeout
= remote_timeout
;
7092 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7093 &saved_remote_timeout
);
7095 remote_timeout
= remote_flash_timeout
;
7096 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
7097 do_cleanups (back_to
);
7103 remote_flash_done (struct target_ops
*ops
)
7105 int saved_remote_timeout
= remote_timeout
;
7107 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7108 &saved_remote_timeout
);
7110 remote_timeout
= remote_flash_timeout
;
7111 ret
= remote_send_printf ("vFlashDone");
7112 do_cleanups (back_to
);
7116 case PACKET_UNKNOWN
:
7117 error (_("Remote target does not support vFlashDone"));
7119 error (_("Error finishing flash operation"));
7126 remote_files_info (struct target_ops
*ignore
)
7128 puts_filtered ("Debugging a target over a serial line.\n");
7131 /* Stuff for dealing with the packets which are part of this protocol.
7132 See comment at top of file for details. */
7134 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
7135 error to higher layers. Called when a serial error is detected.
7136 The exception message is STRING, followed by a colon and a blank,
7137 the system error message for errno at function entry and final dot
7138 for output compatibility with throw_perror_with_name. */
7141 unpush_and_perror (const char *string
)
7143 int saved_errno
= errno
;
7145 remote_unpush_target ();
7146 throw_error (TARGET_CLOSE_ERROR
, "%s: %s.", string
,
7147 safe_strerror (saved_errno
));
7150 /* Read a single character from the remote end. */
7153 readchar (int timeout
)
7156 struct remote_state
*rs
= get_remote_state ();
7158 ch
= serial_readchar (rs
->remote_desc
, timeout
);
7163 switch ((enum serial_rc
) ch
)
7166 remote_unpush_target ();
7167 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
7170 unpush_and_perror (_("Remote communication error. "
7171 "Target disconnected."));
7173 case SERIAL_TIMEOUT
:
7179 /* Wrapper for serial_write that closes the target and throws if
7183 remote_serial_write (const char *str
, int len
)
7185 struct remote_state
*rs
= get_remote_state ();
7187 if (serial_write (rs
->remote_desc
, str
, len
))
7189 unpush_and_perror (_("Remote communication error. "
7190 "Target disconnected."));
7194 /* Send the command in *BUF to the remote machine, and read the reply
7195 into *BUF. Report an error if we get an error reply. Resize
7196 *BUF using xrealloc if necessary to hold the result, and update
7200 remote_send (char **buf
,
7204 getpkt (buf
, sizeof_buf
, 0);
7206 if ((*buf
)[0] == 'E')
7207 error (_("Remote failure reply: %s"), *buf
);
7210 /* Return a pointer to an xmalloc'ed string representing an escaped
7211 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
7212 etc. The caller is responsible for releasing the returned
7216 escape_buffer (const char *buf
, int n
)
7218 struct cleanup
*old_chain
;
7219 struct ui_file
*stb
;
7222 stb
= mem_fileopen ();
7223 old_chain
= make_cleanup_ui_file_delete (stb
);
7225 fputstrn_unfiltered (buf
, n
, 0, stb
);
7226 str
= ui_file_xstrdup (stb
, NULL
);
7227 do_cleanups (old_chain
);
7231 /* Display a null-terminated packet on stdout, for debugging, using C
7235 print_packet (char *buf
)
7237 puts_filtered ("\"");
7238 fputstr_filtered (buf
, '"', gdb_stdout
);
7239 puts_filtered ("\"");
7245 return putpkt_binary (buf
, strlen (buf
));
7248 /* Send a packet to the remote machine, with error checking. The data
7249 of the packet is in BUF. The string in BUF can be at most
7250 get_remote_packet_size () - 5 to account for the $, # and checksum,
7251 and for a possible /0 if we are debugging (remote_debug) and want
7252 to print the sent packet as a string. */
7255 putpkt_binary (char *buf
, int cnt
)
7257 struct remote_state
*rs
= get_remote_state ();
7259 unsigned char csum
= 0;
7260 char *buf2
= alloca (cnt
+ 6);
7267 /* Catch cases like trying to read memory or listing threads while
7268 we're waiting for a stop reply. The remote server wouldn't be
7269 ready to handle this request, so we'd hang and timeout. We don't
7270 have to worry about this in synchronous mode, because in that
7271 case it's not possible to issue a command while the target is
7272 running. This is not a problem in non-stop mode, because in that
7273 case, the stub is always ready to process serial input. */
7274 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
7275 error (_("Cannot execute this command while the target is running."));
7277 /* We're sending out a new packet. Make sure we don't look at a
7278 stale cached response. */
7279 rs
->cached_wait_status
= 0;
7281 /* Copy the packet into buffer BUF2, encapsulating it
7282 and giving it a checksum. */
7287 for (i
= 0; i
< cnt
; i
++)
7293 *p
++ = tohex ((csum
>> 4) & 0xf);
7294 *p
++ = tohex (csum
& 0xf);
7296 /* Send it over and over until we get a positive ack. */
7300 int started_error_output
= 0;
7304 struct cleanup
*old_chain
;
7308 str
= escape_buffer (buf2
, p
- buf2
);
7309 old_chain
= make_cleanup (xfree
, str
);
7310 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7311 gdb_flush (gdb_stdlog
);
7312 do_cleanups (old_chain
);
7314 remote_serial_write (buf2
, p
- buf2
);
7316 /* If this is a no acks version of the remote protocol, send the
7317 packet and move on. */
7321 /* Read until either a timeout occurs (-2) or '+' is read.
7322 Handle any notification that arrives in the mean time. */
7325 ch
= readchar (remote_timeout
);
7333 case SERIAL_TIMEOUT
:
7336 if (started_error_output
)
7338 putchar_unfiltered ('\n');
7339 started_error_output
= 0;
7348 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7352 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7354 case SERIAL_TIMEOUT
:
7358 break; /* Retransmit buffer. */
7362 fprintf_unfiltered (gdb_stdlog
,
7363 "Packet instead of Ack, ignoring it\n");
7364 /* It's probably an old response sent because an ACK
7365 was lost. Gobble up the packet and ack it so it
7366 doesn't get retransmitted when we resend this
7369 remote_serial_write ("+", 1);
7370 continue; /* Now, go look for +. */
7377 /* If we got a notification, handle it, and go back to looking
7379 /* We've found the start of a notification. Now
7380 collect the data. */
7381 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7386 struct cleanup
*old_chain
;
7389 str
= escape_buffer (rs
->buf
, val
);
7390 old_chain
= make_cleanup (xfree
, str
);
7391 fprintf_unfiltered (gdb_stdlog
,
7392 " Notification received: %s\n",
7394 do_cleanups (old_chain
);
7396 handle_notification (rs
->buf
);
7397 /* We're in sync now, rewait for the ack. */
7404 if (!started_error_output
)
7406 started_error_output
= 1;
7407 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7409 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7410 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7419 if (!started_error_output
)
7421 started_error_output
= 1;
7422 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7424 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7428 break; /* Here to retransmit. */
7432 /* This is wrong. If doing a long backtrace, the user should be
7433 able to get out next time we call QUIT, without anything as
7434 violent as interrupt_query. If we want to provide a way out of
7435 here without getting to the next QUIT, it should be based on
7436 hitting ^C twice as in remote_wait. */
7447 /* Come here after finding the start of a frame when we expected an
7448 ack. Do our best to discard the rest of this packet. */
7457 c
= readchar (remote_timeout
);
7460 case SERIAL_TIMEOUT
:
7461 /* Nothing we can do. */
7464 /* Discard the two bytes of checksum and stop. */
7465 c
= readchar (remote_timeout
);
7467 c
= readchar (remote_timeout
);
7470 case '*': /* Run length encoding. */
7471 /* Discard the repeat count. */
7472 c
= readchar (remote_timeout
);
7477 /* A regular character. */
7483 /* Come here after finding the start of the frame. Collect the rest
7484 into *BUF, verifying the checksum, length, and handling run-length
7485 compression. NUL terminate the buffer. If there is not enough room,
7486 expand *BUF using xrealloc.
7488 Returns -1 on error, number of characters in buffer (ignoring the
7489 trailing NULL) on success. (could be extended to return one of the
7490 SERIAL status indications). */
7493 read_frame (char **buf_p
,
7500 struct remote_state
*rs
= get_remote_state ();
7507 c
= readchar (remote_timeout
);
7510 case SERIAL_TIMEOUT
:
7512 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7516 fputs_filtered ("Saw new packet start in middle of old one\n",
7518 return -1; /* Start a new packet, count retries. */
7521 unsigned char pktcsum
;
7527 check_0
= readchar (remote_timeout
);
7529 check_1
= readchar (remote_timeout
);
7531 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7534 fputs_filtered ("Timeout in checksum, retrying\n",
7538 else if (check_0
< 0 || check_1
< 0)
7541 fputs_filtered ("Communication error in checksum\n",
7546 /* Don't recompute the checksum; with no ack packets we
7547 don't have any way to indicate a packet retransmission
7552 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7553 if (csum
== pktcsum
)
7558 struct cleanup
*old_chain
;
7561 str
= escape_buffer (buf
, bc
);
7562 old_chain
= make_cleanup (xfree
, str
);
7563 fprintf_unfiltered (gdb_stdlog
,
7564 "Bad checksum, sentsum=0x%x, "
7565 "csum=0x%x, buf=%s\n",
7566 pktcsum
, csum
, str
);
7567 do_cleanups (old_chain
);
7569 /* Number of characters in buffer ignoring trailing
7573 case '*': /* Run length encoding. */
7578 c
= readchar (remote_timeout
);
7580 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7582 /* The character before ``*'' is repeated. */
7584 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7586 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7588 /* Make some more room in the buffer. */
7589 *sizeof_buf
+= repeat
;
7590 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7594 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7600 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7604 if (bc
>= *sizeof_buf
- 1)
7606 /* Make some more room in the buffer. */
7608 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7619 /* Read a packet from the remote machine, with error checking, and
7620 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7621 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7622 rather than timing out; this is used (in synchronous mode) to wait
7623 for a target that is is executing user code to stop. */
7624 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7625 don't have to change all the calls to getpkt to deal with the
7626 return value, because at the moment I don't know what the right
7627 thing to do it for those. */
7635 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7639 /* Read a packet from the remote machine, with error checking, and
7640 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7641 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7642 rather than timing out; this is used (in synchronous mode) to wait
7643 for a target that is is executing user code to stop. If FOREVER ==
7644 0, this function is allowed to time out gracefully and return an
7645 indication of this to the caller. Otherwise return the number of
7646 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7647 enough reason to return to the caller. *IS_NOTIF is an output
7648 boolean that indicates whether *BUF holds a notification or not
7649 (a regular packet). */
7652 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7653 int expecting_notif
, int *is_notif
)
7655 struct remote_state
*rs
= get_remote_state ();
7661 /* We're reading a new response. Make sure we don't look at a
7662 previously cached response. */
7663 rs
->cached_wait_status
= 0;
7665 strcpy (*buf
, "timeout");
7668 timeout
= watchdog
> 0 ? watchdog
: -1;
7669 else if (expecting_notif
)
7670 timeout
= 0; /* There should already be a char in the buffer. If
7673 timeout
= remote_timeout
;
7677 /* Process any number of notifications, and then return when
7681 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
7683 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7685 /* This can loop forever if the remote side sends us
7686 characters continuously, but if it pauses, we'll get
7687 SERIAL_TIMEOUT from readchar because of timeout. Then
7688 we'll count that as a retry.
7690 Note that even when forever is set, we will only wait
7691 forever prior to the start of a packet. After that, we
7692 expect characters to arrive at a brisk pace. They should
7693 show up within remote_timeout intervals. */
7695 c
= readchar (timeout
);
7696 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7698 if (c
== SERIAL_TIMEOUT
)
7700 if (expecting_notif
)
7701 return -1; /* Don't complain, it's normal to not get
7702 anything in this case. */
7704 if (forever
) /* Watchdog went off? Kill the target. */
7707 remote_unpush_target ();
7708 throw_error (TARGET_CLOSE_ERROR
,
7709 _("Watchdog timeout has expired. "
7710 "Target detached."));
7713 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7717 /* We've found the start of a packet or notification.
7718 Now collect the data. */
7719 val
= read_frame (buf
, sizeof_buf
);
7724 remote_serial_write ("-", 1);
7727 if (tries
> MAX_TRIES
)
7729 /* We have tried hard enough, and just can't receive the
7730 packet/notification. Give up. */
7731 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7733 /* Skip the ack char if we're in no-ack mode. */
7734 if (!rs
->noack_mode
)
7735 remote_serial_write ("+", 1);
7739 /* If we got an ordinary packet, return that to our caller. */
7744 struct cleanup
*old_chain
;
7747 str
= escape_buffer (*buf
, val
);
7748 old_chain
= make_cleanup (xfree
, str
);
7749 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7750 do_cleanups (old_chain
);
7753 /* Skip the ack char if we're in no-ack mode. */
7754 if (!rs
->noack_mode
)
7755 remote_serial_write ("+", 1);
7756 if (is_notif
!= NULL
)
7761 /* If we got a notification, handle it, and go back to looking
7765 gdb_assert (c
== '%');
7769 struct cleanup
*old_chain
;
7772 str
= escape_buffer (*buf
, val
);
7773 old_chain
= make_cleanup (xfree
, str
);
7774 fprintf_unfiltered (gdb_stdlog
,
7775 " Notification received: %s\n",
7777 do_cleanups (old_chain
);
7779 if (is_notif
!= NULL
)
7782 handle_notification (*buf
);
7784 /* Notifications require no acknowledgement. */
7786 if (expecting_notif
)
7793 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7795 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
7799 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
7802 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
7807 /* A helper function that just calls putpkt; for type correctness. */
7810 putpkt_for_catch_errors (void *arg
)
7812 return putpkt (arg
);
7816 remote_kill (struct target_ops
*ops
)
7818 /* Use catch_errors so the user can quit from gdb even when we
7819 aren't on speaking terms with the remote system. */
7820 catch_errors (putpkt_for_catch_errors
, "k", "", RETURN_MASK_ERROR
);
7822 /* Don't wait for it to die. I'm not really sure it matters whether
7823 we do or not. For the existing stubs, kill is a noop. */
7824 target_mourn_inferior ();
7828 remote_vkill (int pid
, struct remote_state
*rs
)
7830 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7833 /* Tell the remote target to detach. */
7834 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7836 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7838 if (packet_ok (rs
->buf
,
7839 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7841 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7848 extended_remote_kill (struct target_ops
*ops
)
7851 int pid
= ptid_get_pid (inferior_ptid
);
7852 struct remote_state
*rs
= get_remote_state ();
7854 res
= remote_vkill (pid
, rs
);
7855 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7857 /* Don't try 'k' on a multi-process aware stub -- it has no way
7858 to specify the pid. */
7862 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7863 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7866 /* Don't wait for it to die. I'm not really sure it matters whether
7867 we do or not. For the existing stubs, kill is a noop. */
7873 error (_("Can't kill process"));
7875 target_mourn_inferior ();
7879 remote_mourn (struct target_ops
*ops
)
7881 remote_mourn_1 (ops
);
7884 /* Worker function for remote_mourn. */
7886 remote_mourn_1 (struct target_ops
*target
)
7888 unpush_target (target
);
7890 /* remote_close takes care of doing most of the clean up. */
7891 generic_mourn_inferior ();
7895 extended_remote_mourn_1 (struct target_ops
*target
)
7897 struct remote_state
*rs
= get_remote_state ();
7899 /* In case we got here due to an error, but we're going to stay
7901 rs
->waiting_for_stop_reply
= 0;
7903 /* If the current general thread belonged to the process we just
7904 detached from or has exited, the remote side current general
7905 thread becomes undefined. Considering a case like this:
7907 - We just got here due to a detach.
7908 - The process that we're detaching from happens to immediately
7909 report a global breakpoint being hit in non-stop mode, in the
7910 same thread we had selected before.
7911 - GDB attaches to this process again.
7912 - This event happens to be the next event we handle.
7914 GDB would consider that the current general thread didn't need to
7915 be set on the stub side (with Hg), since for all it knew,
7916 GENERAL_THREAD hadn't changed.
7918 Notice that although in all-stop mode, the remote server always
7919 sets the current thread to the thread reporting the stop event,
7920 that doesn't happen in non-stop mode; in non-stop, the stub *must
7921 not* change the current thread when reporting a breakpoint hit,
7922 due to the decoupling of event reporting and event handling.
7924 To keep things simple, we always invalidate our notion of the
7926 record_currthread (rs
, minus_one_ptid
);
7928 /* Unlike "target remote", we do not want to unpush the target; then
7929 the next time the user says "run", we won't be connected. */
7931 /* Call common code to mark the inferior as not running. */
7932 generic_mourn_inferior ();
7934 if (!have_inferiors ())
7936 if (!remote_multi_process_p (rs
))
7938 /* Check whether the target is running now - some remote stubs
7939 automatically restart after kill. */
7941 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7943 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7945 /* Assume that the target has been restarted. Set
7946 inferior_ptid so that bits of core GDB realizes
7947 there's something here, e.g., so that the user can
7948 say "kill" again. */
7949 inferior_ptid
= magic_null_ptid
;
7956 extended_remote_mourn (struct target_ops
*ops
)
7958 extended_remote_mourn_1 (ops
);
7962 extended_remote_supports_disable_randomization (void)
7964 return (remote_protocol_packets
[PACKET_QDisableRandomization
].support
7969 extended_remote_disable_randomization (int val
)
7971 struct remote_state
*rs
= get_remote_state ();
7974 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
7977 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7979 error (_("Target does not support QDisableRandomization."));
7980 if (strcmp (reply
, "OK") != 0)
7981 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7985 extended_remote_run (char *args
)
7987 struct remote_state
*rs
= get_remote_state ();
7990 /* If the user has disabled vRun support, or we have detected that
7991 support is not available, do not try it. */
7992 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7995 strcpy (rs
->buf
, "vRun;");
7996 len
= strlen (rs
->buf
);
7998 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7999 error (_("Remote file name too long for run packet"));
8000 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
8002 gdb_assert (args
!= NULL
);
8005 struct cleanup
*back_to
;
8009 argv
= gdb_buildargv (args
);
8010 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
8011 for (i
= 0; argv
[i
] != NULL
; i
++)
8013 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
8014 error (_("Argument list too long for run packet"));
8015 rs
->buf
[len
++] = ';';
8016 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
8018 do_cleanups (back_to
);
8021 rs
->buf
[len
++] = '\0';
8024 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8026 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
8028 /* We have a wait response. All is well. */
8031 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
8032 /* It wasn't disabled before, but it is now. */
8036 if (remote_exec_file
[0] == '\0')
8037 error (_("Running the default executable on the remote target failed; "
8038 "try \"set remote exec-file\"?"));
8040 error (_("Running \"%s\" on the remote target failed"),
8045 /* In the extended protocol we want to be able to do things like
8046 "run" and have them basically work as expected. So we need
8047 a special create_inferior function. We support changing the
8048 executable file and the command line arguments, but not the
8052 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
8053 char **env
, int from_tty
)
8057 struct remote_state
*rs
= get_remote_state ();
8059 /* If running asynchronously, register the target file descriptor
8060 with the event loop. */
8061 if (target_can_async_p ())
8062 target_async (inferior_event_handler
, 0);
8064 /* Disable address space randomization if requested (and supported). */
8065 if (extended_remote_supports_disable_randomization ())
8066 extended_remote_disable_randomization (disable_randomization
);
8068 /* Now restart the remote server. */
8069 run_worked
= extended_remote_run (args
) != -1;
8072 /* vRun was not supported. Fail if we need it to do what the
8074 if (remote_exec_file
[0])
8075 error (_("Remote target does not support \"set remote exec-file\""));
8077 error (_("Remote target does not support \"set args\" or run <ARGS>"));
8079 /* Fall back to "R". */
8080 extended_remote_restart ();
8083 if (!have_inferiors ())
8085 /* Clean up from the last time we ran, before we mark the target
8086 running again. This will mark breakpoints uninserted, and
8087 get_offsets may insert breakpoints. */
8088 init_thread_list ();
8089 init_wait_for_inferior ();
8092 /* vRun's success return is a stop reply. */
8093 stop_reply
= run_worked
? rs
->buf
: NULL
;
8094 add_current_inferior_and_thread (stop_reply
);
8096 /* Get updated offsets, if the stub uses qOffsets. */
8101 extended_remote_create_inferior (struct target_ops
*ops
,
8102 char *exec_file
, char *args
,
8103 char **env
, int from_tty
)
8105 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
8109 /* Given a location's target info BP_TGT and the packet buffer BUF, output
8110 the list of conditions (in agent expression bytecode format), if any, the
8111 target needs to evaluate. The output is placed into the packet buffer
8112 started from BUF and ended at BUF_END. */
8115 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
8116 struct bp_target_info
*bp_tgt
, char *buf
,
8119 struct agent_expr
*aexpr
= NULL
;
8122 char *buf_start
= buf
;
8124 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
8127 buf
+= strlen (buf
);
8128 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
8131 /* Send conditions to the target and free the vector. */
8133 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
8136 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
8137 buf
+= strlen (buf
);
8138 for (i
= 0; i
< aexpr
->len
; ++i
)
8139 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8143 VEC_free (agent_expr_p
, bp_tgt
->conditions
);
8148 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
8149 struct bp_target_info
*bp_tgt
, char *buf
)
8151 struct agent_expr
*aexpr
= NULL
;
8154 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8157 buf
+= strlen (buf
);
8159 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
8160 buf
+= strlen (buf
);
8162 /* Concatenate all the agent expressions that are commands into the
8165 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
8168 sprintf (buf
, "X%x,", aexpr
->len
);
8169 buf
+= strlen (buf
);
8170 for (i
= 0; i
< aexpr
->len
; ++i
)
8171 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8175 VEC_free (agent_expr_p
, bp_tgt
->tcommands
);
8178 /* Insert a breakpoint. On targets that have software breakpoint
8179 support, we ask the remote target to do the work; on targets
8180 which don't, we insert a traditional memory breakpoint. */
8183 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
8184 struct bp_target_info
*bp_tgt
)
8186 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
8187 If it succeeds, then set the support to PACKET_ENABLE. If it
8188 fails, and the user has explicitly requested the Z support then
8189 report an error, otherwise, mark it disabled and go on. */
8191 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8193 CORE_ADDR addr
= bp_tgt
->placed_address
;
8194 struct remote_state
*rs
;
8197 struct condition_list
*cond
= NULL
;
8199 /* Make sure the remote is pointing at the right process, if
8201 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8202 set_general_process ();
8204 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
8206 rs
= get_remote_state ();
8208 endbuf
= rs
->buf
+ get_remote_packet_size ();
8213 addr
= (ULONGEST
) remote_address_masked (addr
);
8214 p
+= hexnumstr (p
, addr
);
8215 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
8217 if (remote_supports_cond_breakpoints ())
8218 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8220 if (remote_can_run_breakpoint_commands ())
8221 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8224 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8226 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
8231 bp_tgt
->placed_address
= addr
;
8232 bp_tgt
->placed_size
= bpsize
;
8234 case PACKET_UNKNOWN
:
8239 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
8243 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
8244 struct bp_target_info
*bp_tgt
)
8246 CORE_ADDR addr
= bp_tgt
->placed_address
;
8247 struct remote_state
*rs
= get_remote_state ();
8249 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8252 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8254 /* Make sure the remote is pointing at the right process, if
8256 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8257 set_general_process ();
8263 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8264 p
+= hexnumstr (p
, addr
);
8265 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8268 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8270 return (rs
->buf
[0] == 'E');
8273 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
8277 watchpoint_to_Z_packet (int type
)
8282 return Z_PACKET_WRITE_WP
;
8285 return Z_PACKET_READ_WP
;
8288 return Z_PACKET_ACCESS_WP
;
8291 internal_error (__FILE__
, __LINE__
,
8292 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8297 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
8298 struct expression
*cond
)
8300 struct remote_state
*rs
= get_remote_state ();
8301 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8303 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8305 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8308 /* Make sure the remote is pointing at the right process, if
8310 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8311 set_general_process ();
8313 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8314 p
= strchr (rs
->buf
, '\0');
8315 addr
= remote_address_masked (addr
);
8316 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8317 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8320 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8322 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8326 case PACKET_UNKNOWN
:
8331 internal_error (__FILE__
, __LINE__
,
8332 _("remote_insert_watchpoint: reached end of function"));
8336 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8337 CORE_ADDR start
, int length
)
8339 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8341 return diff
< length
;
8346 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
8347 struct expression
*cond
)
8349 struct remote_state
*rs
= get_remote_state ();
8350 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8352 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8354 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8357 /* Make sure the remote is pointing at the right process, if
8359 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8360 set_general_process ();
8362 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8363 p
= strchr (rs
->buf
, '\0');
8364 addr
= remote_address_masked (addr
);
8365 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8366 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8368 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8370 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8373 case PACKET_UNKNOWN
:
8378 internal_error (__FILE__
, __LINE__
,
8379 _("remote_remove_watchpoint: reached end of function"));
8383 int remote_hw_watchpoint_limit
= -1;
8384 int remote_hw_watchpoint_length_limit
= -1;
8385 int remote_hw_breakpoint_limit
= -1;
8388 remote_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
8390 if (remote_hw_watchpoint_length_limit
== 0)
8392 else if (remote_hw_watchpoint_length_limit
< 0)
8394 else if (len
<= remote_hw_watchpoint_length_limit
)
8401 remote_check_watch_resources (int type
, int cnt
, int ot
)
8403 if (type
== bp_hardware_breakpoint
)
8405 if (remote_hw_breakpoint_limit
== 0)
8407 else if (remote_hw_breakpoint_limit
< 0)
8409 else if (cnt
<= remote_hw_breakpoint_limit
)
8414 if (remote_hw_watchpoint_limit
== 0)
8416 else if (remote_hw_watchpoint_limit
< 0)
8420 else if (cnt
<= remote_hw_watchpoint_limit
)
8427 remote_stopped_by_watchpoint (void)
8429 return remote_stopped_by_watchpoint_p
;
8433 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8437 if (remote_stopped_by_watchpoint ())
8439 *addr_p
= remote_watch_data_address
;
8448 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
8449 struct bp_target_info
*bp_tgt
)
8452 struct remote_state
*rs
;
8456 /* The length field should be set to the size of a breakpoint
8457 instruction, even though we aren't inserting one ourselves. */
8459 gdbarch_remote_breakpoint_from_pc
8460 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
8462 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8465 /* Make sure the remote is pointing at the right process, if
8467 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8468 set_general_process ();
8470 rs
= get_remote_state ();
8472 endbuf
= rs
->buf
+ get_remote_packet_size ();
8478 addr
= remote_address_masked (bp_tgt
->placed_address
);
8479 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8480 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8482 if (remote_supports_cond_breakpoints ())
8483 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8485 if (remote_can_run_breakpoint_commands ())
8486 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8489 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8491 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8494 if (rs
->buf
[1] == '.')
8496 message
= strchr (rs
->buf
+ 2, '.');
8498 error (_("Remote failure reply: %s"), message
+ 1);
8501 case PACKET_UNKNOWN
:
8506 internal_error (__FILE__
, __LINE__
,
8507 _("remote_insert_hw_breakpoint: reached end of function"));
8512 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
8513 struct bp_target_info
*bp_tgt
)
8516 struct remote_state
*rs
= get_remote_state ();
8518 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8520 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8523 /* Make sure the remote is pointing at the right process, if
8525 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8526 set_general_process ();
8532 addr
= remote_address_masked (bp_tgt
->placed_address
);
8533 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8534 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8537 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8539 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8542 case PACKET_UNKNOWN
:
8547 internal_error (__FILE__
, __LINE__
,
8548 _("remote_remove_hw_breakpoint: reached end of function"));
8551 /* Verify memory using the "qCRC:" request. */
8554 remote_verify_memory (struct target_ops
*ops
,
8555 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8557 struct remote_state
*rs
= get_remote_state ();
8558 unsigned long host_crc
, target_crc
;
8561 /* Make sure the remote is pointing at the right process. */
8562 set_general_process ();
8564 /* FIXME: assumes lma can fit into long. */
8565 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8566 (long) lma
, (long) size
);
8569 /* Be clever; compute the host_crc before waiting for target
8571 host_crc
= xcrc32 (data
, size
, 0xffffffff);
8573 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8574 if (rs
->buf
[0] == 'E')
8577 if (rs
->buf
[0] != 'C')
8578 error (_("remote target does not support this operation"));
8580 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8581 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8583 return (host_crc
== target_crc
);
8586 /* compare-sections command
8588 With no arguments, compares each loadable section in the exec bfd
8589 with the same memory range on the target, and reports mismatches.
8590 Useful for verifying the image on the target against the exec file. */
8593 compare_sections_command (char *args
, int from_tty
)
8596 struct cleanup
*old_chain
;
8598 const char *sectname
;
8606 error (_("command cannot be used without an exec file"));
8608 /* Make sure the remote is pointing at the right process. */
8609 set_general_process ();
8611 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8613 if (!(s
->flags
& SEC_LOAD
))
8614 continue; /* Skip non-loadable section. */
8616 size
= bfd_get_section_size (s
);
8618 continue; /* Skip zero-length section. */
8620 sectname
= bfd_get_section_name (exec_bfd
, s
);
8621 if (args
&& strcmp (args
, sectname
) != 0)
8622 continue; /* Not the section selected by user. */
8624 matched
= 1; /* Do this section. */
8627 sectdata
= xmalloc (size
);
8628 old_chain
= make_cleanup (xfree
, sectdata
);
8629 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8631 res
= target_verify_memory (sectdata
, lma
, size
);
8634 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8635 paddress (target_gdbarch (), lma
),
8636 paddress (target_gdbarch (), lma
+ size
));
8638 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8639 paddress (target_gdbarch (), lma
),
8640 paddress (target_gdbarch (), lma
+ size
));
8642 printf_filtered ("matched.\n");
8645 printf_filtered ("MIS-MATCHED!\n");
8649 do_cleanups (old_chain
);
8652 warning (_("One or more sections of the remote executable does not match\n\
8653 the loaded file\n"));
8654 if (args
&& !matched
)
8655 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8658 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8659 into remote target. The number of bytes written to the remote
8660 target is returned, or -1 for error. */
8663 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8664 const char *annex
, const gdb_byte
*writebuf
,
8665 ULONGEST offset
, LONGEST len
,
8666 struct packet_config
*packet
)
8670 struct remote_state
*rs
= get_remote_state ();
8671 int max_size
= get_memory_write_packet_size ();
8673 if (packet
->support
== PACKET_DISABLE
)
8676 /* Insert header. */
8677 i
= snprintf (rs
->buf
, max_size
,
8678 "qXfer:%s:write:%s:%s:",
8679 object_name
, annex
? annex
: "",
8680 phex_nz (offset
, sizeof offset
));
8681 max_size
-= (i
+ 1);
8683 /* Escape as much data as fits into rs->buf. */
8684 buf_len
= remote_escape_output
8685 (writebuf
, len
, (gdb_byte
*) rs
->buf
+ i
, &max_size
, max_size
);
8687 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8688 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8689 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8692 unpack_varlen_hex (rs
->buf
, &n
);
8696 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8697 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8698 number of bytes read is returned, or 0 for EOF, or -1 for error.
8699 The number of bytes read may be less than LEN without indicating an
8700 EOF. PACKET is checked and updated to indicate whether the remote
8701 target supports this object. */
8704 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8706 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8707 struct packet_config
*packet
)
8709 struct remote_state
*rs
= get_remote_state ();
8710 LONGEST i
, n
, packet_len
;
8712 if (packet
->support
== PACKET_DISABLE
)
8715 /* Check whether we've cached an end-of-object packet that matches
8717 if (rs
->finished_object
)
8719 if (strcmp (object_name
, rs
->finished_object
) == 0
8720 && strcmp (annex
? annex
: "", rs
->finished_annex
) == 0
8721 && offset
== rs
->finished_offset
)
8724 /* Otherwise, we're now reading something different. Discard
8726 xfree (rs
->finished_object
);
8727 xfree (rs
->finished_annex
);
8728 rs
->finished_object
= NULL
;
8729 rs
->finished_annex
= NULL
;
8732 /* Request only enough to fit in a single packet. The actual data
8733 may not, since we don't know how much of it will need to be escaped;
8734 the target is free to respond with slightly less data. We subtract
8735 five to account for the response type and the protocol frame. */
8736 n
= min (get_remote_packet_size () - 5, len
);
8737 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8738 object_name
, annex
? annex
: "",
8739 phex_nz (offset
, sizeof offset
),
8740 phex_nz (n
, sizeof n
));
8741 i
= putpkt (rs
->buf
);
8746 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8747 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8750 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8751 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8753 /* 'm' means there is (or at least might be) more data after this
8754 batch. That does not make sense unless there's at least one byte
8755 of data in this reply. */
8756 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8757 error (_("Remote qXfer reply contained no data."));
8759 /* Got some data. */
8760 i
= remote_unescape_input ((gdb_byte
*) rs
->buf
+ 1,
8761 packet_len
- 1, readbuf
, n
);
8763 /* 'l' is an EOF marker, possibly including a final block of data,
8764 or possibly empty. If we have the final block of a non-empty
8765 object, record this fact to bypass a subsequent partial read. */
8766 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8768 rs
->finished_object
= xstrdup (object_name
);
8769 rs
->finished_annex
= xstrdup (annex
? annex
: "");
8770 rs
->finished_offset
= offset
+ i
;
8777 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8778 const char *annex
, gdb_byte
*readbuf
,
8779 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
8781 struct remote_state
*rs
;
8786 set_remote_traceframe ();
8787 set_general_thread (inferior_ptid
);
8789 rs
= get_remote_state ();
8791 /* Handle memory using the standard memory routines. */
8792 if (object
== TARGET_OBJECT_MEMORY
)
8798 /* If the remote target is connected but not running, we should
8799 pass this request down to a lower stratum (e.g. the executable
8801 if (!target_has_execution
)
8804 if (writebuf
!= NULL
)
8805 xfered
= remote_write_bytes (offset
, writebuf
, len
);
8807 xfered
= remote_read_bytes (offset
, readbuf
, len
);
8811 else if (xfered
== 0 && errno
== 0)
8817 /* Handle SPU memory using qxfer packets. */
8818 if (object
== TARGET_OBJECT_SPU
)
8821 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8822 &remote_protocol_packets
8823 [PACKET_qXfer_spu_read
]);
8825 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8826 &remote_protocol_packets
8827 [PACKET_qXfer_spu_write
]);
8830 /* Handle extra signal info using qxfer packets. */
8831 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8834 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8835 &remote_protocol_packets
8836 [PACKET_qXfer_siginfo_read
]);
8838 return remote_write_qxfer (ops
, "siginfo", annex
,
8839 writebuf
, offset
, len
,
8840 &remote_protocol_packets
8841 [PACKET_qXfer_siginfo_write
]);
8844 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8847 return remote_read_qxfer (ops
, "statictrace", annex
,
8848 readbuf
, offset
, len
,
8849 &remote_protocol_packets
8850 [PACKET_qXfer_statictrace_read
]);
8855 /* Only handle flash writes. */
8856 if (writebuf
!= NULL
)
8862 case TARGET_OBJECT_FLASH
:
8863 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
8867 else if (xfered
== 0 && errno
== 0)
8877 /* Map pre-existing objects onto letters. DO NOT do this for new
8878 objects!!! Instead specify new query packets. */
8881 case TARGET_OBJECT_AVR
:
8885 case TARGET_OBJECT_AUXV
:
8886 gdb_assert (annex
== NULL
);
8887 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8888 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8890 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8891 return remote_read_qxfer
8892 (ops
, "features", annex
, readbuf
, offset
, len
,
8893 &remote_protocol_packets
[PACKET_qXfer_features
]);
8895 case TARGET_OBJECT_LIBRARIES
:
8896 return remote_read_qxfer
8897 (ops
, "libraries", annex
, readbuf
, offset
, len
,
8898 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8900 case TARGET_OBJECT_LIBRARIES_SVR4
:
8901 return remote_read_qxfer
8902 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
,
8903 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8905 case TARGET_OBJECT_MEMORY_MAP
:
8906 gdb_assert (annex
== NULL
);
8907 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8908 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8910 case TARGET_OBJECT_OSDATA
:
8911 /* Should only get here if we're connected. */
8912 gdb_assert (rs
->remote_desc
);
8913 return remote_read_qxfer
8914 (ops
, "osdata", annex
, readbuf
, offset
, len
,
8915 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8917 case TARGET_OBJECT_THREADS
:
8918 gdb_assert (annex
== NULL
);
8919 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8920 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8922 case TARGET_OBJECT_TRACEFRAME_INFO
:
8923 gdb_assert (annex
== NULL
);
8924 return remote_read_qxfer
8925 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
,
8926 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8928 case TARGET_OBJECT_FDPIC
:
8929 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8930 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8932 case TARGET_OBJECT_OPENVMS_UIB
:
8933 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
8934 &remote_protocol_packets
[PACKET_qXfer_uib
]);
8936 case TARGET_OBJECT_BTRACE
:
8937 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
8938 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
8944 /* Note: a zero OFFSET and LEN can be used to query the minimum
8946 if (offset
== 0 && len
== 0)
8947 return (get_remote_packet_size ());
8948 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8949 large enough let the caller deal with it. */
8950 if (len
< get_remote_packet_size ())
8952 len
= get_remote_packet_size ();
8954 /* Except for querying the minimum buffer size, target must be open. */
8955 if (!rs
->remote_desc
)
8956 error (_("remote query is only available after target open"));
8958 gdb_assert (annex
!= NULL
);
8959 gdb_assert (readbuf
!= NULL
);
8965 /* We used one buffer char for the remote protocol q command and
8966 another for the query type. As the remote protocol encapsulation
8967 uses 4 chars plus one extra in case we are debugging
8968 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8971 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8973 /* Bad caller may have sent forbidden characters. */
8974 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8979 gdb_assert (annex
[i
] == '\0');
8981 i
= putpkt (rs
->buf
);
8985 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8986 strcpy ((char *) readbuf
, rs
->buf
);
8988 return strlen ((char *) readbuf
);
8992 remote_search_memory (struct target_ops
* ops
,
8993 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8994 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8995 CORE_ADDR
*found_addrp
)
8997 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
8998 struct remote_state
*rs
= get_remote_state ();
8999 int max_size
= get_memory_write_packet_size ();
9000 struct packet_config
*packet
=
9001 &remote_protocol_packets
[PACKET_qSearch_memory
];
9002 /* Number of packet bytes used to encode the pattern;
9003 this could be more than PATTERN_LEN due to escape characters. */
9004 int escaped_pattern_len
;
9005 /* Amount of pattern that was encodable in the packet. */
9006 int used_pattern_len
;
9009 ULONGEST found_addr
;
9011 /* Don't go to the target if we don't have to.
9012 This is done before checking packet->support to avoid the possibility that
9013 a success for this edge case means the facility works in general. */
9014 if (pattern_len
> search_space_len
)
9016 if (pattern_len
== 0)
9018 *found_addrp
= start_addr
;
9022 /* If we already know the packet isn't supported, fall back to the simple
9023 way of searching memory. */
9025 if (packet
->support
== PACKET_DISABLE
)
9027 /* Target doesn't provided special support, fall back and use the
9028 standard support (copy memory and do the search here). */
9029 return simple_search_memory (ops
, start_addr
, search_space_len
,
9030 pattern
, pattern_len
, found_addrp
);
9033 /* Make sure the remote is pointing at the right process. */
9034 set_general_process ();
9036 /* Insert header. */
9037 i
= snprintf (rs
->buf
, max_size
,
9038 "qSearch:memory:%s;%s;",
9039 phex_nz (start_addr
, addr_size
),
9040 phex_nz (search_space_len
, sizeof (search_space_len
)));
9041 max_size
-= (i
+ 1);
9043 /* Escape as much data as fits into rs->buf. */
9044 escaped_pattern_len
=
9045 remote_escape_output (pattern
, pattern_len
, (gdb_byte
*) rs
->buf
+ i
,
9046 &used_pattern_len
, max_size
);
9048 /* Bail if the pattern is too large. */
9049 if (used_pattern_len
!= pattern_len
)
9050 error (_("Pattern is too large to transmit to remote target."));
9052 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
9053 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
9054 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9056 /* The request may not have worked because the command is not
9057 supported. If so, fall back to the simple way. */
9058 if (packet
->support
== PACKET_DISABLE
)
9060 return simple_search_memory (ops
, start_addr
, search_space_len
,
9061 pattern
, pattern_len
, found_addrp
);
9066 if (rs
->buf
[0] == '0')
9068 else if (rs
->buf
[0] == '1')
9071 if (rs
->buf
[1] != ',')
9072 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
9073 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
9074 *found_addrp
= found_addr
;
9077 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
9083 remote_rcmd (char *command
,
9084 struct ui_file
*outbuf
)
9086 struct remote_state
*rs
= get_remote_state ();
9089 if (!rs
->remote_desc
)
9090 error (_("remote rcmd is only available after target open"));
9092 /* Send a NULL command across as an empty command. */
9093 if (command
== NULL
)
9096 /* The query prefix. */
9097 strcpy (rs
->buf
, "qRcmd,");
9098 p
= strchr (rs
->buf
, '\0');
9100 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
9101 > get_remote_packet_size ())
9102 error (_("\"monitor\" command ``%s'' is too long."), command
);
9104 /* Encode the actual command. */
9105 bin2hex ((gdb_byte
*) command
, p
, 0);
9107 if (putpkt (rs
->buf
) < 0)
9108 error (_("Communication problem with target."));
9110 /* get/display the response */
9115 /* XXX - see also remote_get_noisy_reply(). */
9116 QUIT
; /* Allow user to bail out with ^C. */
9118 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
9120 /* Timeout. Continue to (try to) read responses.
9121 This is better than stopping with an error, assuming the stub
9122 is still executing the (long) monitor command.
9123 If needed, the user can interrupt gdb using C-c, obtaining
9124 an effect similar to stop on timeout. */
9129 error (_("Target does not support this command."));
9130 if (buf
[0] == 'O' && buf
[1] != 'K')
9132 remote_console_output (buf
+ 1); /* 'O' message from stub. */
9135 if (strcmp (buf
, "OK") == 0)
9137 if (strlen (buf
) == 3 && buf
[0] == 'E'
9138 && isdigit (buf
[1]) && isdigit (buf
[2]))
9140 error (_("Protocol error with Rcmd"));
9142 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
9144 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
9146 fputc_unfiltered (c
, outbuf
);
9152 static VEC(mem_region_s
) *
9153 remote_memory_map (struct target_ops
*ops
)
9155 VEC(mem_region_s
) *result
= NULL
;
9156 char *text
= target_read_stralloc (¤t_target
,
9157 TARGET_OBJECT_MEMORY_MAP
, NULL
);
9161 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
9163 result
= parse_memory_map (text
);
9164 do_cleanups (back_to
);
9171 packet_command (char *args
, int from_tty
)
9173 struct remote_state
*rs
= get_remote_state ();
9175 if (!rs
->remote_desc
)
9176 error (_("command can only be used with remote target"));
9179 error (_("remote-packet command requires packet text as argument"));
9181 puts_filtered ("sending: ");
9182 print_packet (args
);
9183 puts_filtered ("\n");
9186 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9187 puts_filtered ("received: ");
9188 print_packet (rs
->buf
);
9189 puts_filtered ("\n");
9193 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
9195 static void display_thread_info (struct gdb_ext_thread_info
*info
);
9197 static void threadset_test_cmd (char *cmd
, int tty
);
9199 static void threadalive_test (char *cmd
, int tty
);
9201 static void threadlist_test_cmd (char *cmd
, int tty
);
9203 int get_and_display_threadinfo (threadref
*ref
);
9205 static void threadinfo_test_cmd (char *cmd
, int tty
);
9207 static int thread_display_step (threadref
*ref
, void *context
);
9209 static void threadlist_update_test_cmd (char *cmd
, int tty
);
9211 static void init_remote_threadtests (void);
9213 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
9216 threadset_test_cmd (char *cmd
, int tty
)
9218 int sample_thread
= SAMPLE_THREAD
;
9220 printf_filtered (_("Remote threadset test\n"));
9221 set_general_thread (sample_thread
);
9226 threadalive_test (char *cmd
, int tty
)
9228 int sample_thread
= SAMPLE_THREAD
;
9229 int pid
= ptid_get_pid (inferior_ptid
);
9230 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
9232 if (remote_thread_alive (ptid
))
9233 printf_filtered ("PASS: Thread alive test\n");
9235 printf_filtered ("FAIL: Thread alive test\n");
9238 void output_threadid (char *title
, threadref
*ref
);
9241 output_threadid (char *title
, threadref
*ref
)
9245 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
9247 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
9251 threadlist_test_cmd (char *cmd
, int tty
)
9254 threadref nextthread
;
9255 int done
, result_count
;
9256 threadref threadlist
[3];
9258 printf_filtered ("Remote Threadlist test\n");
9259 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
9260 &result_count
, &threadlist
[0]))
9261 printf_filtered ("FAIL: threadlist test\n");
9264 threadref
*scan
= threadlist
;
9265 threadref
*limit
= scan
+ result_count
;
9267 while (scan
< limit
)
9268 output_threadid (" thread ", scan
++);
9273 display_thread_info (struct gdb_ext_thread_info
*info
)
9275 output_threadid ("Threadid: ", &info
->threadid
);
9276 printf_filtered ("Name: %s\n ", info
->shortname
);
9277 printf_filtered ("State: %s\n", info
->display
);
9278 printf_filtered ("other: %s\n\n", info
->more_display
);
9282 get_and_display_threadinfo (threadref
*ref
)
9286 struct gdb_ext_thread_info threadinfo
;
9288 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9289 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9290 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9291 display_thread_info (&threadinfo
);
9296 threadinfo_test_cmd (char *cmd
, int tty
)
9298 int athread
= SAMPLE_THREAD
;
9302 int_to_threadref (&thread
, athread
);
9303 printf_filtered ("Remote Threadinfo test\n");
9304 if (!get_and_display_threadinfo (&thread
))
9305 printf_filtered ("FAIL cannot get thread info\n");
9309 thread_display_step (threadref
*ref
, void *context
)
9311 /* output_threadid(" threadstep ",ref); *//* simple test */
9312 return get_and_display_threadinfo (ref
);
9316 threadlist_update_test_cmd (char *cmd
, int tty
)
9318 printf_filtered ("Remote Threadlist update test\n");
9319 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9323 init_remote_threadtests (void)
9325 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9326 _("Fetch and print the remote list of "
9327 "thread identifiers, one pkt only"));
9328 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9329 _("Fetch and display info about one thread"));
9330 add_com ("tset", class_obscure
, threadset_test_cmd
,
9331 _("Test setting to a different thread"));
9332 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9333 _("Iterate through updating all remote thread info"));
9334 add_com ("talive", class_obscure
, threadalive_test
,
9335 _(" Remote thread alive test "));
9340 /* Convert a thread ID to a string. Returns the string in a static
9344 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9346 static char buf
[64];
9347 struct remote_state
*rs
= get_remote_state ();
9349 if (ptid_equal (ptid
, null_ptid
))
9350 return normal_pid_to_str (ptid
);
9351 else if (ptid_is_pid (ptid
))
9353 /* Printing an inferior target id. */
9355 /* When multi-process extensions are off, there's no way in the
9356 remote protocol to know the remote process id, if there's any
9357 at all. There's one exception --- when we're connected with
9358 target extended-remote, and we manually attached to a process
9359 with "attach PID". We don't record anywhere a flag that
9360 allows us to distinguish that case from the case of
9361 connecting with extended-remote and the stub already being
9362 attached to a process, and reporting yes to qAttached, hence
9363 no smart special casing here. */
9364 if (!remote_multi_process_p (rs
))
9366 xsnprintf (buf
, sizeof buf
, "Remote target");
9370 return normal_pid_to_str (ptid
);
9374 if (ptid_equal (magic_null_ptid
, ptid
))
9375 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9376 else if (rs
->extended
&& remote_multi_process_p (rs
))
9377 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9378 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
9380 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9381 ptid_get_tid (ptid
));
9386 /* Get the address of the thread local variable in OBJFILE which is
9387 stored at OFFSET within the thread local storage for thread PTID. */
9390 remote_get_thread_local_address (struct target_ops
*ops
,
9391 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9393 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
9395 struct remote_state
*rs
= get_remote_state ();
9397 char *endp
= rs
->buf
+ get_remote_packet_size ();
9398 enum packet_result result
;
9400 strcpy (p
, "qGetTLSAddr:");
9402 p
= write_ptid (p
, endp
, ptid
);
9404 p
+= hexnumstr (p
, offset
);
9406 p
+= hexnumstr (p
, lm
);
9410 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9411 result
= packet_ok (rs
->buf
,
9412 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9413 if (result
== PACKET_OK
)
9417 unpack_varlen_hex (rs
->buf
, &result
);
9420 else if (result
== PACKET_UNKNOWN
)
9421 throw_error (TLS_GENERIC_ERROR
,
9422 _("Remote target doesn't support qGetTLSAddr packet"));
9424 throw_error (TLS_GENERIC_ERROR
,
9425 _("Remote target failed to process qGetTLSAddr request"));
9428 throw_error (TLS_GENERIC_ERROR
,
9429 _("TLS not supported or disabled on this target"));
9434 /* Provide thread local base, i.e. Thread Information Block address.
9435 Returns 1 if ptid is found and thread_local_base is non zero. */
9438 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
9440 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
9442 struct remote_state
*rs
= get_remote_state ();
9444 char *endp
= rs
->buf
+ get_remote_packet_size ();
9445 enum packet_result result
;
9447 strcpy (p
, "qGetTIBAddr:");
9449 p
= write_ptid (p
, endp
, ptid
);
9453 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9454 result
= packet_ok (rs
->buf
,
9455 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9456 if (result
== PACKET_OK
)
9460 unpack_varlen_hex (rs
->buf
, &result
);
9462 *addr
= (CORE_ADDR
) result
;
9465 else if (result
== PACKET_UNKNOWN
)
9466 error (_("Remote target doesn't support qGetTIBAddr packet"));
9468 error (_("Remote target failed to process qGetTIBAddr request"));
9471 error (_("qGetTIBAddr not supported or disabled on this target"));
9476 /* Support for inferring a target description based on the current
9477 architecture and the size of a 'g' packet. While the 'g' packet
9478 can have any size (since optional registers can be left off the
9479 end), some sizes are easily recognizable given knowledge of the
9480 approximate architecture. */
9482 struct remote_g_packet_guess
9485 const struct target_desc
*tdesc
;
9487 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9488 DEF_VEC_O(remote_g_packet_guess_s
);
9490 struct remote_g_packet_data
9492 VEC(remote_g_packet_guess_s
) *guesses
;
9495 static struct gdbarch_data
*remote_g_packet_data_handle
;
9498 remote_g_packet_data_init (struct obstack
*obstack
)
9500 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9504 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9505 const struct target_desc
*tdesc
)
9507 struct remote_g_packet_data
*data
9508 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9509 struct remote_g_packet_guess new_guess
, *guess
;
9512 gdb_assert (tdesc
!= NULL
);
9515 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9517 if (guess
->bytes
== bytes
)
9518 internal_error (__FILE__
, __LINE__
,
9519 _("Duplicate g packet description added for size %d"),
9522 new_guess
.bytes
= bytes
;
9523 new_guess
.tdesc
= tdesc
;
9524 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9527 /* Return 1 if remote_read_description would do anything on this target
9528 and architecture, 0 otherwise. */
9531 remote_read_description_p (struct target_ops
*target
)
9533 struct remote_g_packet_data
*data
9534 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9536 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9542 static const struct target_desc
*
9543 remote_read_description (struct target_ops
*target
)
9545 struct remote_g_packet_data
*data
9546 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9548 /* Do not try this during initial connection, when we do not know
9549 whether there is a running but stopped thread. */
9550 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9553 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9555 struct remote_g_packet_guess
*guess
;
9557 int bytes
= send_g_packet ();
9560 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9562 if (guess
->bytes
== bytes
)
9563 return guess
->tdesc
;
9565 /* We discard the g packet. A minor optimization would be to
9566 hold on to it, and fill the register cache once we have selected
9567 an architecture, but it's too tricky to do safely. */
9573 /* Remote file transfer support. This is host-initiated I/O, not
9574 target-initiated; for target-initiated, see remote-fileio.c. */
9576 /* If *LEFT is at least the length of STRING, copy STRING to
9577 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9578 decrease *LEFT. Otherwise raise an error. */
9581 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9583 int len
= strlen (string
);
9586 error (_("Packet too long for target."));
9588 memcpy (*buffer
, string
, len
);
9592 /* NUL-terminate the buffer as a convenience, if there is
9598 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9599 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9600 decrease *LEFT. Otherwise raise an error. */
9603 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9606 if (2 * len
> *left
)
9607 error (_("Packet too long for target."));
9609 bin2hex (bytes
, *buffer
, len
);
9613 /* NUL-terminate the buffer as a convenience, if there is
9619 /* If *LEFT is large enough, convert VALUE to hex and add it to
9620 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9621 decrease *LEFT. Otherwise raise an error. */
9624 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9626 int len
= hexnumlen (value
);
9629 error (_("Packet too long for target."));
9631 hexnumstr (*buffer
, value
);
9635 /* NUL-terminate the buffer as a convenience, if there is
9641 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9642 value, *REMOTE_ERRNO to the remote error number or zero if none
9643 was included, and *ATTACHMENT to point to the start of the annex
9644 if any. The length of the packet isn't needed here; there may
9645 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9647 Return 0 if the packet could be parsed, -1 if it could not. If
9648 -1 is returned, the other variables may not be initialized. */
9651 remote_hostio_parse_result (char *buffer
, int *retcode
,
9652 int *remote_errno
, char **attachment
)
9659 if (buffer
[0] != 'F')
9663 *retcode
= strtol (&buffer
[1], &p
, 16);
9664 if (errno
!= 0 || p
== &buffer
[1])
9667 /* Check for ",errno". */
9671 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9672 if (errno
!= 0 || p
+ 1 == p2
)
9677 /* Check for ";attachment". If there is no attachment, the
9678 packet should end here. */
9681 *attachment
= p
+ 1;
9684 else if (*p
== '\0')
9690 /* Send a prepared I/O packet to the target and read its response.
9691 The prepared packet is in the global RS->BUF before this function
9692 is called, and the answer is there when we return.
9694 COMMAND_BYTES is the length of the request to send, which may include
9695 binary data. WHICH_PACKET is the packet configuration to check
9696 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9697 is set to the error number and -1 is returned. Otherwise the value
9698 returned by the function is returned.
9700 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9701 attachment is expected; an error will be reported if there's a
9702 mismatch. If one is found, *ATTACHMENT will be set to point into
9703 the packet buffer and *ATTACHMENT_LEN will be set to the
9704 attachment's length. */
9707 remote_hostio_send_command (int command_bytes
, int which_packet
,
9708 int *remote_errno
, char **attachment
,
9709 int *attachment_len
)
9711 struct remote_state
*rs
= get_remote_state ();
9712 int ret
, bytes_read
;
9713 char *attachment_tmp
;
9715 if (!rs
->remote_desc
9716 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
9718 *remote_errno
= FILEIO_ENOSYS
;
9722 putpkt_binary (rs
->buf
, command_bytes
);
9723 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9725 /* If it timed out, something is wrong. Don't try to parse the
9729 *remote_errno
= FILEIO_EINVAL
;
9733 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9736 *remote_errno
= FILEIO_EINVAL
;
9738 case PACKET_UNKNOWN
:
9739 *remote_errno
= FILEIO_ENOSYS
;
9745 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9748 *remote_errno
= FILEIO_EINVAL
;
9752 /* Make sure we saw an attachment if and only if we expected one. */
9753 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9754 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9756 *remote_errno
= FILEIO_EINVAL
;
9760 /* If an attachment was found, it must point into the packet buffer;
9761 work out how many bytes there were. */
9762 if (attachment_tmp
!= NULL
)
9764 *attachment
= attachment_tmp
;
9765 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9771 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9772 remote file descriptor, or -1 if an error occurs (and set
9776 remote_hostio_open (const char *filename
, int flags
, int mode
,
9779 struct remote_state
*rs
= get_remote_state ();
9781 int left
= get_remote_packet_size () - 1;
9783 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9785 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9787 remote_buffer_add_string (&p
, &left
, ",");
9789 remote_buffer_add_int (&p
, &left
, flags
);
9790 remote_buffer_add_string (&p
, &left
, ",");
9792 remote_buffer_add_int (&p
, &left
, mode
);
9794 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9795 remote_errno
, NULL
, NULL
);
9798 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9799 Return the number of bytes written, or -1 if an error occurs (and
9800 set *REMOTE_ERRNO). */
9803 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
9804 ULONGEST offset
, int *remote_errno
)
9806 struct remote_state
*rs
= get_remote_state ();
9808 int left
= get_remote_packet_size ();
9811 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9813 remote_buffer_add_int (&p
, &left
, fd
);
9814 remote_buffer_add_string (&p
, &left
, ",");
9816 remote_buffer_add_int (&p
, &left
, offset
);
9817 remote_buffer_add_string (&p
, &left
, ",");
9819 p
+= remote_escape_output (write_buf
, len
, (gdb_byte
*) p
, &out_len
,
9820 get_remote_packet_size () - (p
- rs
->buf
));
9822 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9823 remote_errno
, NULL
, NULL
);
9826 /* Read up to LEN bytes FD on the remote target into READ_BUF
9827 Return the number of bytes read, or -1 if an error occurs (and
9828 set *REMOTE_ERRNO). */
9831 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
9832 ULONGEST offset
, int *remote_errno
)
9834 struct remote_state
*rs
= get_remote_state ();
9837 int left
= get_remote_packet_size ();
9838 int ret
, attachment_len
;
9841 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9843 remote_buffer_add_int (&p
, &left
, fd
);
9844 remote_buffer_add_string (&p
, &left
, ",");
9846 remote_buffer_add_int (&p
, &left
, len
);
9847 remote_buffer_add_string (&p
, &left
, ",");
9849 remote_buffer_add_int (&p
, &left
, offset
);
9851 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9852 remote_errno
, &attachment
,
9858 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9860 if (read_len
!= ret
)
9861 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9866 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9867 (and set *REMOTE_ERRNO). */
9870 remote_hostio_close (int fd
, int *remote_errno
)
9872 struct remote_state
*rs
= get_remote_state ();
9874 int left
= get_remote_packet_size () - 1;
9876 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9878 remote_buffer_add_int (&p
, &left
, fd
);
9880 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9881 remote_errno
, NULL
, NULL
);
9884 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9885 occurs (and set *REMOTE_ERRNO). */
9888 remote_hostio_unlink (const char *filename
, int *remote_errno
)
9890 struct remote_state
*rs
= get_remote_state ();
9892 int left
= get_remote_packet_size () - 1;
9894 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9896 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9899 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9900 remote_errno
, NULL
, NULL
);
9903 /* Read value of symbolic link FILENAME on the remote target. Return
9904 a null-terminated string allocated via xmalloc, or NULL if an error
9905 occurs (and set *REMOTE_ERRNO). */
9908 remote_hostio_readlink (const char *filename
, int *remote_errno
)
9910 struct remote_state
*rs
= get_remote_state ();
9913 int left
= get_remote_packet_size ();
9914 int len
, attachment_len
;
9918 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9920 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9923 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9924 remote_errno
, &attachment
,
9930 ret
= xmalloc (len
+ 1);
9932 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9933 (gdb_byte
*) ret
, len
);
9934 if (read_len
!= len
)
9935 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9942 remote_fileio_errno_to_host (int errnum
)
9966 case FILEIO_ENOTDIR
:
9986 case FILEIO_ENAMETOOLONG
:
9987 return ENAMETOOLONG
;
9993 remote_hostio_error (int errnum
)
9995 int host_error
= remote_fileio_errno_to_host (errnum
);
9997 if (host_error
== -1)
9998 error (_("Unknown remote I/O error %d"), errnum
);
10000 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
10004 remote_hostio_close_cleanup (void *opaque
)
10006 int fd
= *(int *) opaque
;
10009 remote_hostio_close (fd
, &remote_errno
);
10014 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
10016 const char *filename
= bfd_get_filename (abfd
);
10017 int fd
, remote_errno
;
10020 gdb_assert (remote_filename_p (filename
));
10022 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
10025 errno
= remote_fileio_errno_to_host (remote_errno
);
10026 bfd_set_error (bfd_error_system_call
);
10030 stream
= xmalloc (sizeof (int));
10036 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
10038 int fd
= *(int *)stream
;
10043 /* Ignore errors on close; these may happen if the remote
10044 connection was already torn down. */
10045 remote_hostio_close (fd
, &remote_errno
);
10047 /* Zero means success. */
10052 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
10053 file_ptr nbytes
, file_ptr offset
)
10055 int fd
= *(int *)stream
;
10057 file_ptr pos
, bytes
;
10060 while (nbytes
> pos
)
10062 bytes
= remote_hostio_pread (fd
, (gdb_byte
*) buf
+ pos
, nbytes
- pos
,
10063 offset
+ pos
, &remote_errno
);
10065 /* Success, but no bytes, means end-of-file. */
10069 errno
= remote_fileio_errno_to_host (remote_errno
);
10070 bfd_set_error (bfd_error_system_call
);
10081 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
10083 /* FIXME: We should probably implement remote_hostio_stat. */
10084 sb
->st_size
= INT_MAX
;
10089 remote_filename_p (const char *filename
)
10091 return strncmp (filename
, "remote:", 7) == 0;
10095 remote_bfd_open (const char *remote_file
, const char *target
)
10097 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
10098 remote_bfd_iovec_open
, NULL
,
10099 remote_bfd_iovec_pread
,
10100 remote_bfd_iovec_close
,
10101 remote_bfd_iovec_stat
);
10107 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
10109 struct cleanup
*back_to
, *close_cleanup
;
10110 int retcode
, fd
, remote_errno
, bytes
, io_size
;
10113 int bytes_in_buffer
;
10116 struct remote_state
*rs
= get_remote_state ();
10118 if (!rs
->remote_desc
)
10119 error (_("command can only be used with remote target"));
10121 file
= gdb_fopen_cloexec (local_file
, "rb");
10123 perror_with_name (local_file
);
10124 back_to
= make_cleanup_fclose (file
);
10126 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
10128 0700, &remote_errno
);
10130 remote_hostio_error (remote_errno
);
10132 /* Send up to this many bytes at once. They won't all fit in the
10133 remote packet limit, so we'll transfer slightly fewer. */
10134 io_size
= get_remote_packet_size ();
10135 buffer
= xmalloc (io_size
);
10136 make_cleanup (xfree
, buffer
);
10138 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10140 bytes_in_buffer
= 0;
10143 while (bytes_in_buffer
|| !saw_eof
)
10147 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
10148 io_size
- bytes_in_buffer
,
10153 error (_("Error reading %s."), local_file
);
10156 /* EOF. Unless there is something still in the
10157 buffer from the last iteration, we are done. */
10159 if (bytes_in_buffer
== 0)
10167 bytes
+= bytes_in_buffer
;
10168 bytes_in_buffer
= 0;
10170 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
,
10171 offset
, &remote_errno
);
10174 remote_hostio_error (remote_errno
);
10175 else if (retcode
== 0)
10176 error (_("Remote write of %d bytes returned 0!"), bytes
);
10177 else if (retcode
< bytes
)
10179 /* Short write. Save the rest of the read data for the next
10181 bytes_in_buffer
= bytes
- retcode
;
10182 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
10188 discard_cleanups (close_cleanup
);
10189 if (remote_hostio_close (fd
, &remote_errno
))
10190 remote_hostio_error (remote_errno
);
10193 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
10194 do_cleanups (back_to
);
10198 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
10200 struct cleanup
*back_to
, *close_cleanup
;
10201 int fd
, remote_errno
, bytes
, io_size
;
10205 struct remote_state
*rs
= get_remote_state ();
10207 if (!rs
->remote_desc
)
10208 error (_("command can only be used with remote target"));
10210 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
10212 remote_hostio_error (remote_errno
);
10214 file
= gdb_fopen_cloexec (local_file
, "wb");
10216 perror_with_name (local_file
);
10217 back_to
= make_cleanup_fclose (file
);
10219 /* Send up to this many bytes at once. They won't all fit in the
10220 remote packet limit, so we'll transfer slightly fewer. */
10221 io_size
= get_remote_packet_size ();
10222 buffer
= xmalloc (io_size
);
10223 make_cleanup (xfree
, buffer
);
10225 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10230 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
10232 /* Success, but no bytes, means end-of-file. */
10235 remote_hostio_error (remote_errno
);
10239 bytes
= fwrite (buffer
, 1, bytes
, file
);
10241 perror_with_name (local_file
);
10244 discard_cleanups (close_cleanup
);
10245 if (remote_hostio_close (fd
, &remote_errno
))
10246 remote_hostio_error (remote_errno
);
10249 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
10250 do_cleanups (back_to
);
10254 remote_file_delete (const char *remote_file
, int from_tty
)
10256 int retcode
, remote_errno
;
10257 struct remote_state
*rs
= get_remote_state ();
10259 if (!rs
->remote_desc
)
10260 error (_("command can only be used with remote target"));
10262 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
10264 remote_hostio_error (remote_errno
);
10267 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
10271 remote_put_command (char *args
, int from_tty
)
10273 struct cleanup
*back_to
;
10277 error_no_arg (_("file to put"));
10279 argv
= gdb_buildargv (args
);
10280 back_to
= make_cleanup_freeargv (argv
);
10281 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10282 error (_("Invalid parameters to remote put"));
10284 remote_file_put (argv
[0], argv
[1], from_tty
);
10286 do_cleanups (back_to
);
10290 remote_get_command (char *args
, int from_tty
)
10292 struct cleanup
*back_to
;
10296 error_no_arg (_("file to get"));
10298 argv
= gdb_buildargv (args
);
10299 back_to
= make_cleanup_freeargv (argv
);
10300 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10301 error (_("Invalid parameters to remote get"));
10303 remote_file_get (argv
[0], argv
[1], from_tty
);
10305 do_cleanups (back_to
);
10309 remote_delete_command (char *args
, int from_tty
)
10311 struct cleanup
*back_to
;
10315 error_no_arg (_("file to delete"));
10317 argv
= gdb_buildargv (args
);
10318 back_to
= make_cleanup_freeargv (argv
);
10319 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10320 error (_("Invalid parameters to remote delete"));
10322 remote_file_delete (argv
[0], from_tty
);
10324 do_cleanups (back_to
);
10328 remote_command (char *args
, int from_tty
)
10330 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
10334 remote_can_execute_reverse (void)
10336 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
10337 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
10344 remote_supports_non_stop (void)
10350 remote_supports_disable_randomization (void)
10352 /* Only supported in extended mode. */
10357 remote_supports_multi_process (void)
10359 struct remote_state
*rs
= get_remote_state ();
10361 /* Only extended-remote handles being attached to multiple
10362 processes, even though plain remote can use the multi-process
10363 thread id extensions, so that GDB knows the target process's
10365 return rs
->extended
&& remote_multi_process_p (rs
);
10369 remote_supports_cond_tracepoints (void)
10371 struct remote_state
*rs
= get_remote_state ();
10373 return rs
->cond_tracepoints
;
10377 remote_supports_cond_breakpoints (void)
10379 struct remote_state
*rs
= get_remote_state ();
10381 return rs
->cond_breakpoints
;
10385 remote_supports_fast_tracepoints (void)
10387 struct remote_state
*rs
= get_remote_state ();
10389 return rs
->fast_tracepoints
;
10393 remote_supports_static_tracepoints (void)
10395 struct remote_state
*rs
= get_remote_state ();
10397 return rs
->static_tracepoints
;
10401 remote_supports_install_in_trace (void)
10403 struct remote_state
*rs
= get_remote_state ();
10405 return rs
->install_in_trace
;
10409 remote_supports_enable_disable_tracepoint (void)
10411 struct remote_state
*rs
= get_remote_state ();
10413 return rs
->enable_disable_tracepoints
;
10417 remote_supports_string_tracing (void)
10419 struct remote_state
*rs
= get_remote_state ();
10421 return rs
->string_tracing
;
10425 remote_can_run_breakpoint_commands (void)
10427 struct remote_state
*rs
= get_remote_state ();
10429 return rs
->breakpoint_commands
;
10433 remote_trace_init (void)
10436 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10437 if (strcmp (target_buf
, "OK") != 0)
10438 error (_("Target does not support this command."));
10441 static void free_actions_list (char **actions_list
);
10442 static void free_actions_list_cleanup_wrapper (void *);
10444 free_actions_list_cleanup_wrapper (void *al
)
10446 free_actions_list (al
);
10450 free_actions_list (char **actions_list
)
10454 if (actions_list
== 0)
10457 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10458 xfree (actions_list
[ndx
]);
10460 xfree (actions_list
);
10463 /* Recursive routine to walk through command list including loops, and
10464 download packets for each command. */
10467 remote_download_command_source (int num
, ULONGEST addr
,
10468 struct command_line
*cmds
)
10470 struct remote_state
*rs
= get_remote_state ();
10471 struct command_line
*cmd
;
10473 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10475 QUIT
; /* Allow user to bail out with ^C. */
10476 strcpy (rs
->buf
, "QTDPsrc:");
10477 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10478 rs
->buf
+ strlen (rs
->buf
),
10479 rs
->buf_size
- strlen (rs
->buf
));
10481 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10482 if (strcmp (target_buf
, "OK"))
10483 warning (_("Target does not support source download."));
10485 if (cmd
->control_type
== while_control
10486 || cmd
->control_type
== while_stepping_control
)
10488 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10490 QUIT
; /* Allow user to bail out with ^C. */
10491 strcpy (rs
->buf
, "QTDPsrc:");
10492 encode_source_string (num
, addr
, "cmd", "end",
10493 rs
->buf
+ strlen (rs
->buf
),
10494 rs
->buf_size
- strlen (rs
->buf
));
10496 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10497 if (strcmp (target_buf
, "OK"))
10498 warning (_("Target does not support source download."));
10504 remote_download_tracepoint (struct bp_location
*loc
)
10506 #define BUF_SIZE 2048
10510 char buf
[BUF_SIZE
];
10511 char **tdp_actions
;
10512 char **stepping_actions
;
10514 struct cleanup
*old_chain
= NULL
;
10515 struct agent_expr
*aexpr
;
10516 struct cleanup
*aexpr_chain
= NULL
;
10518 struct breakpoint
*b
= loc
->owner
;
10519 struct tracepoint
*t
= (struct tracepoint
*) b
;
10521 encode_actions_rsp (loc
, &tdp_actions
, &stepping_actions
);
10522 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10524 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10527 tpaddr
= loc
->address
;
10528 sprintf_vma (addrbuf
, tpaddr
);
10529 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10530 addrbuf
, /* address */
10531 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10532 t
->step_count
, t
->pass_count
);
10533 /* Fast tracepoints are mostly handled by the target, but we can
10534 tell the target how big of an instruction block should be moved
10536 if (b
->type
== bp_fast_tracepoint
)
10538 /* Only test for support at download time; we may not know
10539 target capabilities at definition time. */
10540 if (remote_supports_fast_tracepoints ())
10544 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10545 tpaddr
, &isize
, NULL
))
10546 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10549 /* If it passed validation at definition but fails now,
10550 something is very wrong. */
10551 internal_error (__FILE__
, __LINE__
,
10552 _("Fast tracepoint not "
10553 "valid during download"));
10556 /* Fast tracepoints are functionally identical to regular
10557 tracepoints, so don't take lack of support as a reason to
10558 give up on the trace run. */
10559 warning (_("Target does not support fast tracepoints, "
10560 "downloading %d as regular tracepoint"), b
->number
);
10562 else if (b
->type
== bp_static_tracepoint
)
10564 /* Only test for support at download time; we may not know
10565 target capabilities at definition time. */
10566 if (remote_supports_static_tracepoints ())
10568 struct static_tracepoint_marker marker
;
10570 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10571 strcat (buf
, ":S");
10573 error (_("Static tracepoint not valid during download"));
10576 /* Fast tracepoints are functionally identical to regular
10577 tracepoints, so don't take lack of support as a reason
10578 to give up on the trace run. */
10579 error (_("Target does not support static tracepoints"));
10581 /* If the tracepoint has a conditional, make it into an agent
10582 expression and append to the definition. */
10585 /* Only test support at download time, we may not know target
10586 capabilities at definition time. */
10587 if (remote_supports_cond_tracepoints ())
10589 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10590 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10591 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10593 pkt
= buf
+ strlen (buf
);
10594 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10595 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10597 do_cleanups (aexpr_chain
);
10600 warning (_("Target does not support conditional tracepoints, "
10601 "ignoring tp %d cond"), b
->number
);
10604 if (b
->commands
|| *default_collect
)
10607 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10608 if (strcmp (target_buf
, "OK"))
10609 error (_("Target does not support tracepoints."));
10611 /* do_single_steps (t); */
10614 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10616 QUIT
; /* Allow user to bail out with ^C. */
10617 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10618 b
->number
, addrbuf
, /* address */
10620 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10623 remote_get_noisy_reply (&target_buf
,
10625 if (strcmp (target_buf
, "OK"))
10626 error (_("Error on target while setting tracepoints."));
10629 if (stepping_actions
)
10631 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10633 QUIT
; /* Allow user to bail out with ^C. */
10634 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10635 b
->number
, addrbuf
, /* address */
10636 ((ndx
== 0) ? "S" : ""),
10637 stepping_actions
[ndx
],
10638 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10640 remote_get_noisy_reply (&target_buf
,
10642 if (strcmp (target_buf
, "OK"))
10643 error (_("Error on target while setting tracepoints."));
10647 if (remote_protocol_packets
[PACKET_TracepointSource
].support
10650 if (b
->addr_string
)
10652 strcpy (buf
, "QTDPsrc:");
10653 encode_source_string (b
->number
, loc
->address
,
10654 "at", b
->addr_string
, buf
+ strlen (buf
),
10655 2048 - strlen (buf
));
10658 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10659 if (strcmp (target_buf
, "OK"))
10660 warning (_("Target does not support source download."));
10662 if (b
->cond_string
)
10664 strcpy (buf
, "QTDPsrc:");
10665 encode_source_string (b
->number
, loc
->address
,
10666 "cond", b
->cond_string
, buf
+ strlen (buf
),
10667 2048 - strlen (buf
));
10669 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10670 if (strcmp (target_buf
, "OK"))
10671 warning (_("Target does not support source download."));
10673 remote_download_command_source (b
->number
, loc
->address
,
10674 breakpoint_commands (b
));
10677 do_cleanups (old_chain
);
10681 remote_can_download_tracepoint (void)
10683 struct remote_state
*rs
= get_remote_state ();
10684 struct trace_status
*ts
;
10687 /* Don't try to install tracepoints until we've relocated our
10688 symbols, and fetched and merged the target's tracepoint list with
10690 if (rs
->starting_up
)
10693 ts
= current_trace_status ();
10694 status
= remote_get_trace_status (ts
);
10696 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10699 /* If we are in a tracing experiment, but remote stub doesn't support
10700 installing tracepoint in trace, we have to return. */
10701 if (!remote_supports_install_in_trace ())
10709 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
10711 struct remote_state
*rs
= get_remote_state ();
10714 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10715 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10717 p
= rs
->buf
+ strlen (rs
->buf
);
10718 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10719 error (_("Trace state variable name too long for tsv definition packet"));
10720 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
10723 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10724 if (*target_buf
== '\0')
10725 error (_("Target does not support this command."));
10726 if (strcmp (target_buf
, "OK") != 0)
10727 error (_("Error on target while downloading trace state variable."));
10731 remote_enable_tracepoint (struct bp_location
*location
)
10733 struct remote_state
*rs
= get_remote_state ();
10736 sprintf_vma (addr_buf
, location
->address
);
10737 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10738 location
->owner
->number
, addr_buf
);
10740 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10741 if (*rs
->buf
== '\0')
10742 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10743 if (strcmp (rs
->buf
, "OK") != 0)
10744 error (_("Error on target while enabling tracepoint."));
10748 remote_disable_tracepoint (struct bp_location
*location
)
10750 struct remote_state
*rs
= get_remote_state ();
10753 sprintf_vma (addr_buf
, location
->address
);
10754 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10755 location
->owner
->number
, addr_buf
);
10757 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10758 if (*rs
->buf
== '\0')
10759 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10760 if (strcmp (rs
->buf
, "OK") != 0)
10761 error (_("Error on target while disabling tracepoint."));
10765 remote_trace_set_readonly_regions (void)
10769 bfd_size_type size
;
10775 return; /* No information to give. */
10777 strcpy (target_buf
, "QTro");
10778 offset
= strlen (target_buf
);
10779 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10781 char tmp1
[40], tmp2
[40];
10784 if ((s
->flags
& SEC_LOAD
) == 0 ||
10785 /* (s->flags & SEC_CODE) == 0 || */
10786 (s
->flags
& SEC_READONLY
) == 0)
10790 vma
= bfd_get_section_vma (abfd
, s
);
10791 size
= bfd_get_section_size (s
);
10792 sprintf_vma (tmp1
, vma
);
10793 sprintf_vma (tmp2
, vma
+ size
);
10794 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10795 if (offset
+ sec_length
+ 1 > target_buf_size
)
10797 if (remote_protocol_packets
[PACKET_qXfer_traceframe_info
].support
10800 Too many sections for read-only sections definition packet."));
10803 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10805 offset
+= sec_length
;
10809 putpkt (target_buf
);
10810 getpkt (&target_buf
, &target_buf_size
, 0);
10815 remote_trace_start (void)
10817 putpkt ("QTStart");
10818 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10819 if (*target_buf
== '\0')
10820 error (_("Target does not support this command."));
10821 if (strcmp (target_buf
, "OK") != 0)
10822 error (_("Bogus reply from target: %s"), target_buf
);
10826 remote_get_trace_status (struct trace_status
*ts
)
10828 /* Initialize it just to avoid a GCC false warning. */
10830 /* FIXME we need to get register block size some other way. */
10831 extern int trace_regblock_size
;
10832 volatile struct gdb_exception ex
;
10833 enum packet_result result
;
10835 if (remote_protocol_packets
[PACKET_qTStatus
].support
== PACKET_DISABLE
)
10838 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10840 putpkt ("qTStatus");
10842 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10844 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10848 if (ex
.error
!= TARGET_CLOSE_ERROR
)
10850 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10853 throw_exception (ex
);
10856 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
10858 /* If the remote target doesn't do tracing, flag it. */
10859 if (result
== PACKET_UNKNOWN
)
10862 /* We're working with a live target. */
10863 ts
->filename
= NULL
;
10866 error (_("Bogus trace status reply from target: %s"), target_buf
);
10868 /* Function 'parse_trace_status' sets default value of each field of
10869 'ts' at first, so we don't have to do it here. */
10870 parse_trace_status (p
, ts
);
10872 return ts
->running
;
10876 remote_get_tracepoint_status (struct breakpoint
*bp
,
10877 struct uploaded_tp
*utp
)
10879 struct remote_state
*rs
= get_remote_state ();
10881 struct bp_location
*loc
;
10882 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10883 size_t size
= get_remote_packet_size ();
10887 tp
->base
.hit_count
= 0;
10888 tp
->traceframe_usage
= 0;
10889 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10891 /* If the tracepoint was never downloaded, don't go asking for
10893 if (tp
->number_on_target
== 0)
10895 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
10896 phex_nz (loc
->address
, 0));
10898 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10899 if (reply
&& *reply
)
10902 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10908 utp
->hit_count
= 0;
10909 utp
->traceframe_usage
= 0;
10910 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
10911 phex_nz (utp
->addr
, 0));
10913 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10914 if (reply
&& *reply
)
10917 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10923 remote_trace_stop (void)
10926 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10927 if (*target_buf
== '\0')
10928 error (_("Target does not support this command."));
10929 if (strcmp (target_buf
, "OK") != 0)
10930 error (_("Bogus reply from target: %s"), target_buf
);
10934 remote_trace_find (enum trace_find_type type
, int num
,
10935 CORE_ADDR addr1
, CORE_ADDR addr2
,
10938 struct remote_state
*rs
= get_remote_state ();
10939 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10941 int target_frameno
= -1, target_tracept
= -1;
10943 /* Lookups other than by absolute frame number depend on the current
10944 trace selected, so make sure it is correct on the remote end
10946 if (type
!= tfind_number
)
10947 set_remote_traceframe ();
10950 strcpy (p
, "QTFrame:");
10951 p
= strchr (p
, '\0');
10955 xsnprintf (p
, endbuf
- p
, "%x", num
);
10958 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
10961 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
10964 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
10965 phex_nz (addr2
, 0));
10967 case tfind_outside
:
10968 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
10969 phex_nz (addr2
, 0));
10972 error (_("Unknown trace find type %d"), type
);
10976 reply
= remote_get_noisy_reply (&(rs
->buf
), &rs
->buf_size
);
10977 if (*reply
== '\0')
10978 error (_("Target does not support this command."));
10980 while (reply
&& *reply
)
10985 target_frameno
= (int) strtol (p
, &reply
, 16);
10987 error (_("Unable to parse trace frame number"));
10988 /* Don't update our remote traceframe number cache on failure
10989 to select a remote traceframe. */
10990 if (target_frameno
== -1)
10995 target_tracept
= (int) strtol (p
, &reply
, 16);
10997 error (_("Unable to parse tracepoint number"));
10999 case 'O': /* "OK"? */
11000 if (reply
[1] == 'K' && reply
[2] == '\0')
11003 error (_("Bogus reply from target: %s"), reply
);
11006 error (_("Bogus reply from target: %s"), reply
);
11009 *tpp
= target_tracept
;
11011 rs
->remote_traceframe_number
= target_frameno
;
11012 return target_frameno
;
11016 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
11018 struct remote_state
*rs
= get_remote_state ();
11022 set_remote_traceframe ();
11024 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
11026 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11027 if (reply
&& *reply
)
11031 unpack_varlen_hex (reply
+ 1, &uval
);
11032 *val
= (LONGEST
) uval
;
11040 remote_save_trace_data (const char *filename
)
11042 struct remote_state
*rs
= get_remote_state ();
11046 strcpy (p
, "QTSave:");
11048 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
11049 error (_("Remote file name too long for trace save packet"));
11050 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
11053 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11054 if (*reply
== '\0')
11055 error (_("Target does not support this command."));
11056 if (strcmp (reply
, "OK") != 0)
11057 error (_("Bogus reply from target: %s"), reply
);
11061 /* This is basically a memory transfer, but needs to be its own packet
11062 because we don't know how the target actually organizes its trace
11063 memory, plus we want to be able to ask for as much as possible, but
11064 not be unhappy if we don't get as much as we ask for. */
11067 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
11069 struct remote_state
*rs
= get_remote_state ();
11075 strcpy (p
, "qTBuffer:");
11077 p
+= hexnumstr (p
, offset
);
11079 p
+= hexnumstr (p
, len
);
11083 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11084 if (reply
&& *reply
)
11086 /* 'l' by itself means we're at the end of the buffer and
11087 there is nothing more to get. */
11091 /* Convert the reply into binary. Limit the number of bytes to
11092 convert according to our passed-in buffer size, rather than
11093 what was returned in the packet; if the target is
11094 unexpectedly generous and gives us a bigger reply than we
11095 asked for, we don't want to crash. */
11096 rslt
= hex2bin (target_buf
, buf
, len
);
11100 /* Something went wrong, flag as an error. */
11105 remote_set_disconnected_tracing (int val
)
11107 struct remote_state
*rs
= get_remote_state ();
11109 if (rs
->disconnected_tracing
)
11113 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
11115 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11116 if (*reply
== '\0')
11117 error (_("Target does not support this command."));
11118 if (strcmp (reply
, "OK") != 0)
11119 error (_("Bogus reply from target: %s"), reply
);
11122 warning (_("Target does not support disconnected tracing."));
11126 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
11128 struct thread_info
*info
= find_thread_ptid (ptid
);
11130 if (info
&& info
->private)
11131 return info
->private->core
;
11136 remote_set_circular_trace_buffer (int val
)
11138 struct remote_state
*rs
= get_remote_state ();
11141 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
11143 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11144 if (*reply
== '\0')
11145 error (_("Target does not support this command."));
11146 if (strcmp (reply
, "OK") != 0)
11147 error (_("Bogus reply from target: %s"), reply
);
11150 static struct traceframe_info
*
11151 remote_traceframe_info (void)
11155 text
= target_read_stralloc (¤t_target
,
11156 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
11159 struct traceframe_info
*info
;
11160 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
11162 info
= parse_traceframe_info (text
);
11163 do_cleanups (back_to
);
11170 /* Handle the qTMinFTPILen packet. Returns the minimum length of
11171 instruction on which a fast tracepoint may be placed. Returns -1
11172 if the packet is not supported, and 0 if the minimum instruction
11173 length is unknown. */
11176 remote_get_min_fast_tracepoint_insn_len (void)
11178 struct remote_state
*rs
= get_remote_state ();
11181 /* If we're not debugging a process yet, the IPA can't be
11183 if (!target_has_execution
)
11186 /* Make sure the remote is pointing at the right process. */
11187 set_general_process ();
11189 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
11191 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11192 if (*reply
== '\0')
11196 ULONGEST min_insn_len
;
11198 unpack_varlen_hex (reply
, &min_insn_len
);
11200 return (int) min_insn_len
;
11205 remote_set_trace_buffer_size (LONGEST val
)
11207 if (remote_protocol_packets
[PACKET_QTBuffer_size
].support
11210 struct remote_state
*rs
= get_remote_state ();
11211 char *buf
= rs
->buf
;
11212 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11213 enum packet_result result
;
11215 gdb_assert (val
>= 0 || val
== -1);
11216 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
11217 /* Send -1 as literal "-1" to avoid host size dependency. */
11221 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
11224 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
11227 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
11228 result
= packet_ok (rs
->buf
,
11229 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
11231 if (result
!= PACKET_OK
)
11232 warning (_("Bogus reply from target: %s"), rs
->buf
);
11237 remote_set_trace_notes (const char *user
, const char *notes
,
11238 const char *stop_notes
)
11240 struct remote_state
*rs
= get_remote_state ();
11242 char *buf
= rs
->buf
;
11243 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11246 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
11249 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
11250 nbytes
= bin2hex ((gdb_byte
*) user
, buf
, 0);
11256 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
11257 nbytes
= bin2hex ((gdb_byte
*) notes
, buf
, 0);
11263 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
11264 nbytes
= bin2hex ((gdb_byte
*) stop_notes
, buf
, 0);
11268 /* Ensure the buffer is terminated. */
11272 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11273 if (*reply
== '\0')
11276 if (strcmp (reply
, "OK") != 0)
11277 error (_("Bogus reply from target: %s"), reply
);
11283 remote_use_agent (int use
)
11285 if (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
)
11287 struct remote_state
*rs
= get_remote_state ();
11289 /* If the stub supports QAgent. */
11290 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
11292 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11294 if (strcmp (rs
->buf
, "OK") == 0)
11305 remote_can_use_agent (void)
11307 return (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
);
11310 struct btrace_target_info
11312 /* The ptid of the traced thread. */
11316 /* Check whether the target supports branch tracing. */
11319 remote_supports_btrace (void)
11321 if (remote_protocol_packets
[PACKET_Qbtrace_off
].support
!= PACKET_ENABLE
)
11323 if (remote_protocol_packets
[PACKET_Qbtrace_bts
].support
!= PACKET_ENABLE
)
11325 if (remote_protocol_packets
[PACKET_qXfer_btrace
].support
!= PACKET_ENABLE
)
11331 /* Enable branch tracing. */
11333 static struct btrace_target_info
*
11334 remote_enable_btrace (ptid_t ptid
)
11336 struct btrace_target_info
*tinfo
= NULL
;
11337 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
11338 struct remote_state
*rs
= get_remote_state ();
11339 char *buf
= rs
->buf
;
11340 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11342 if (packet
->support
!= PACKET_ENABLE
)
11343 error (_("Target does not support branch tracing."));
11345 set_general_thread (ptid
);
11347 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11349 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11351 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11353 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11354 error (_("Could not enable branch tracing for %s: %s"),
11355 target_pid_to_str (ptid
), rs
->buf
+ 2);
11357 error (_("Could not enable branch tracing for %s."),
11358 target_pid_to_str (ptid
));
11361 tinfo
= xzalloc (sizeof (*tinfo
));
11362 tinfo
->ptid
= ptid
;
11367 /* Disable branch tracing. */
11370 remote_disable_btrace (struct btrace_target_info
*tinfo
)
11372 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
11373 struct remote_state
*rs
= get_remote_state ();
11374 char *buf
= rs
->buf
;
11375 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11377 if (packet
->support
!= PACKET_ENABLE
)
11378 error (_("Target does not support branch tracing."));
11380 set_general_thread (tinfo
->ptid
);
11382 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11384 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11386 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11388 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11389 error (_("Could not disable branch tracing for %s: %s"),
11390 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
11392 error (_("Could not disable branch tracing for %s."),
11393 target_pid_to_str (tinfo
->ptid
));
11399 /* Teardown branch tracing. */
11402 remote_teardown_btrace (struct btrace_target_info
*tinfo
)
11404 /* We must not talk to the target during teardown. */
11408 /* Read the branch trace. */
11410 static VEC (btrace_block_s
) *
11411 remote_read_btrace (struct btrace_target_info
*tinfo
,
11412 enum btrace_read_type type
)
11414 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
11415 struct remote_state
*rs
= get_remote_state ();
11416 VEC (btrace_block_s
) *btrace
= NULL
;
11420 if (packet
->support
!= PACKET_ENABLE
)
11421 error (_("Target does not support branch tracing."));
11423 #if !defined(HAVE_LIBEXPAT)
11424 error (_("Cannot process branch tracing result. XML parsing not supported."));
11429 case btrace_read_all
:
11432 case btrace_read_new
:
11436 internal_error (__FILE__
, __LINE__
,
11437 _("Bad branch tracing read type: %u."),
11438 (unsigned int) type
);
11441 xml
= target_read_stralloc (¤t_target
,
11442 TARGET_OBJECT_BTRACE
, annex
);
11445 struct cleanup
*cleanup
= make_cleanup (xfree
, xml
);
11447 btrace
= parse_xml_btrace (xml
);
11448 do_cleanups (cleanup
);
11455 remote_augmented_libraries_svr4_read (void)
11457 struct remote_state
*rs
= get_remote_state ();
11459 return rs
->augmented_libraries_svr4_read
;
11463 init_remote_ops (void)
11465 remote_ops
.to_shortname
= "remote";
11466 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11467 remote_ops
.to_doc
=
11468 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11469 Specify the serial device it is connected to\n\
11470 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11471 remote_ops
.to_open
= remote_open
;
11472 remote_ops
.to_close
= remote_close
;
11473 remote_ops
.to_detach
= remote_detach
;
11474 remote_ops
.to_disconnect
= remote_disconnect
;
11475 remote_ops
.to_resume
= remote_resume
;
11476 remote_ops
.to_wait
= remote_wait
;
11477 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11478 remote_ops
.to_store_registers
= remote_store_registers
;
11479 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11480 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
11481 remote_ops
.to_files_info
= remote_files_info
;
11482 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11483 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11484 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11485 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11486 remote_ops
.to_watchpoint_addr_within_range
=
11487 remote_watchpoint_addr_within_range
;
11488 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11489 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11490 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11491 remote_ops
.to_region_ok_for_hw_watchpoint
11492 = remote_region_ok_for_hw_watchpoint
;
11493 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11494 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11495 remote_ops
.to_kill
= remote_kill
;
11496 remote_ops
.to_load
= generic_load
;
11497 remote_ops
.to_mourn_inferior
= remote_mourn
;
11498 remote_ops
.to_pass_signals
= remote_pass_signals
;
11499 remote_ops
.to_program_signals
= remote_program_signals
;
11500 remote_ops
.to_thread_alive
= remote_thread_alive
;
11501 remote_ops
.to_find_new_threads
= remote_threads_info
;
11502 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11503 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11504 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11505 remote_ops
.to_stop
= remote_stop
;
11506 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11507 remote_ops
.to_rcmd
= remote_rcmd
;
11508 remote_ops
.to_log_command
= serial_log_command
;
11509 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11510 remote_ops
.to_stratum
= process_stratum
;
11511 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11512 remote_ops
.to_has_memory
= default_child_has_memory
;
11513 remote_ops
.to_has_stack
= default_child_has_stack
;
11514 remote_ops
.to_has_registers
= default_child_has_registers
;
11515 remote_ops
.to_has_execution
= default_child_has_execution
;
11516 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11517 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11518 remote_ops
.to_magic
= OPS_MAGIC
;
11519 remote_ops
.to_memory_map
= remote_memory_map
;
11520 remote_ops
.to_flash_erase
= remote_flash_erase
;
11521 remote_ops
.to_flash_done
= remote_flash_done
;
11522 remote_ops
.to_read_description
= remote_read_description
;
11523 remote_ops
.to_search_memory
= remote_search_memory
;
11524 remote_ops
.to_can_async_p
= remote_can_async_p
;
11525 remote_ops
.to_is_async_p
= remote_is_async_p
;
11526 remote_ops
.to_async
= remote_async
;
11527 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11528 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11529 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11530 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11531 remote_ops
.to_supports_disable_randomization
11532 = remote_supports_disable_randomization
;
11533 remote_ops
.to_fileio_open
= remote_hostio_open
;
11534 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11535 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11536 remote_ops
.to_fileio_close
= remote_hostio_close
;
11537 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11538 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11539 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11540 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11541 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11542 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11543 remote_ops
.to_trace_init
= remote_trace_init
;
11544 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11545 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11546 remote_ops
.to_download_trace_state_variable
11547 = remote_download_trace_state_variable
;
11548 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11549 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11550 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11551 remote_ops
.to_trace_start
= remote_trace_start
;
11552 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11553 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11554 remote_ops
.to_trace_stop
= remote_trace_stop
;
11555 remote_ops
.to_trace_find
= remote_trace_find
;
11556 remote_ops
.to_get_trace_state_variable_value
11557 = remote_get_trace_state_variable_value
;
11558 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11559 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11560 remote_ops
.to_upload_trace_state_variables
11561 = remote_upload_trace_state_variables
;
11562 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11563 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11564 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11565 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11566 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
11567 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11568 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11569 remote_ops
.to_verify_memory
= remote_verify_memory
;
11570 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11571 remote_ops
.to_set_permissions
= remote_set_permissions
;
11572 remote_ops
.to_static_tracepoint_marker_at
11573 = remote_static_tracepoint_marker_at
;
11574 remote_ops
.to_static_tracepoint_markers_by_strid
11575 = remote_static_tracepoint_markers_by_strid
;
11576 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11577 remote_ops
.to_use_agent
= remote_use_agent
;
11578 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11579 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
11580 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
11581 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
11582 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
11583 remote_ops
.to_read_btrace
= remote_read_btrace
;
11584 remote_ops
.to_augmented_libraries_svr4_read
=
11585 remote_augmented_libraries_svr4_read
;
11588 /* Set up the extended remote vector by making a copy of the standard
11589 remote vector and adding to it. */
11592 init_extended_remote_ops (void)
11594 extended_remote_ops
= remote_ops
;
11596 extended_remote_ops
.to_shortname
= "extended-remote";
11597 extended_remote_ops
.to_longname
=
11598 "Extended remote serial target in gdb-specific protocol";
11599 extended_remote_ops
.to_doc
=
11600 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11601 Specify the serial device it is connected to (e.g. /dev/ttya).";
11602 extended_remote_ops
.to_open
= extended_remote_open
;
11603 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11604 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11605 extended_remote_ops
.to_detach
= extended_remote_detach
;
11606 extended_remote_ops
.to_attach
= extended_remote_attach
;
11607 extended_remote_ops
.to_kill
= extended_remote_kill
;
11608 extended_remote_ops
.to_supports_disable_randomization
11609 = extended_remote_supports_disable_randomization
;
11613 remote_can_async_p (void)
11615 struct remote_state
*rs
= get_remote_state ();
11617 if (!target_async_permitted
)
11618 /* We only enable async when the user specifically asks for it. */
11621 /* We're async whenever the serial device is. */
11622 return serial_can_async_p (rs
->remote_desc
);
11626 remote_is_async_p (void)
11628 struct remote_state
*rs
= get_remote_state ();
11630 if (!target_async_permitted
)
11631 /* We only enable async when the user specifically asks for it. */
11634 /* We're async whenever the serial device is. */
11635 return serial_is_async_p (rs
->remote_desc
);
11638 /* Pass the SERIAL event on and up to the client. One day this code
11639 will be able to delay notifying the client of an event until the
11640 point where an entire packet has been received. */
11642 static serial_event_ftype remote_async_serial_handler
;
11645 remote_async_serial_handler (struct serial
*scb
, void *context
)
11647 struct remote_state
*rs
= context
;
11649 /* Don't propogate error information up to the client. Instead let
11650 the client find out about the error by querying the target. */
11651 rs
->async_client_callback (INF_REG_EVENT
, rs
->async_client_context
);
11655 remote_async_inferior_event_handler (gdb_client_data data
)
11657 inferior_event_handler (INF_REG_EVENT
, NULL
);
11661 remote_async (void (*callback
) (enum inferior_event_type event_type
,
11662 void *context
), void *context
)
11664 struct remote_state
*rs
= get_remote_state ();
11666 if (callback
!= NULL
)
11668 serial_async (rs
->remote_desc
, remote_async_serial_handler
, rs
);
11669 rs
->async_client_callback
= callback
;
11670 rs
->async_client_context
= context
;
11673 serial_async (rs
->remote_desc
, NULL
, NULL
);
11677 set_remote_cmd (char *args
, int from_tty
)
11679 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
11683 show_remote_cmd (char *args
, int from_tty
)
11685 /* We can't just use cmd_show_list here, because we want to skip
11686 the redundant "show remote Z-packet" and the legacy aliases. */
11687 struct cleanup
*showlist_chain
;
11688 struct cmd_list_element
*list
= remote_show_cmdlist
;
11689 struct ui_out
*uiout
= current_uiout
;
11691 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
11692 for (; list
!= NULL
; list
= list
->next
)
11693 if (strcmp (list
->name
, "Z-packet") == 0)
11695 else if (list
->type
== not_set_cmd
)
11696 /* Alias commands are exactly like the original, except they
11697 don't have the normal type. */
11701 struct cleanup
*option_chain
11702 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
11704 ui_out_field_string (uiout
, "name", list
->name
);
11705 ui_out_text (uiout
, ": ");
11706 if (list
->type
== show_cmd
)
11707 do_show_command ((char *) NULL
, from_tty
, list
);
11709 cmd_func (list
, NULL
, from_tty
);
11710 /* Close the tuple. */
11711 do_cleanups (option_chain
);
11714 /* Close the tuple. */
11715 do_cleanups (showlist_chain
);
11719 /* Function to be called whenever a new objfile (shlib) is detected. */
11721 remote_new_objfile (struct objfile
*objfile
)
11723 struct remote_state
*rs
= get_remote_state ();
11725 if (rs
->remote_desc
!= 0) /* Have a remote connection. */
11726 remote_check_symbols ();
11729 /* Pull all the tracepoints defined on the target and create local
11730 data structures representing them. We don't want to create real
11731 tracepoints yet, we don't want to mess up the user's existing
11735 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
11737 struct remote_state
*rs
= get_remote_state ();
11740 /* Ask for a first packet of tracepoint definition. */
11742 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11744 while (*p
&& *p
!= 'l')
11746 parse_tracepoint_definition (p
, utpp
);
11747 /* Ask for another packet of tracepoint definition. */
11749 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11756 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
11758 struct remote_state
*rs
= get_remote_state ();
11761 /* Ask for a first packet of variable definition. */
11763 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11765 while (*p
&& *p
!= 'l')
11767 parse_tsv_definition (p
, utsvp
);
11768 /* Ask for another packet of variable definition. */
11770 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11776 /* The "set/show range-stepping" show hook. */
11779 show_range_stepping (struct ui_file
*file
, int from_tty
,
11780 struct cmd_list_element
*c
,
11783 fprintf_filtered (file
,
11784 _("Debugger's willingness to use range stepping "
11785 "is %s.\n"), value
);
11788 /* The "set/show range-stepping" set hook. */
11791 set_range_stepping (char *ignore_args
, int from_tty
,
11792 struct cmd_list_element
*c
)
11794 struct remote_state
*rs
= get_remote_state ();
11796 /* Whene enabling, check whether range stepping is actually
11797 supported by the target, and warn if not. */
11798 if (use_range_stepping
)
11800 if (rs
->remote_desc
!= NULL
)
11802 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
11803 remote_vcont_probe (rs
);
11805 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_ENABLE
11806 && rs
->supports_vCont
.r
)
11810 warning (_("Range stepping is not supported by the current target"));
11815 _initialize_remote (void)
11817 struct remote_state
*rs
;
11818 struct cmd_list_element
*cmd
;
11819 const char *cmd_name
;
11821 /* architecture specific data */
11822 remote_gdbarch_data_handle
=
11823 gdbarch_data_register_post_init (init_remote_state
);
11824 remote_g_packet_data_handle
=
11825 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
11827 /* Initialize the per-target state. At the moment there is only one
11828 of these, not one per target. Only one target is active at a
11830 remote_state
= new_remote_state ();
11832 init_remote_ops ();
11833 add_target (&remote_ops
);
11835 init_extended_remote_ops ();
11836 add_target (&extended_remote_ops
);
11838 /* Hook into new objfile notification. */
11839 observer_attach_new_objfile (remote_new_objfile
);
11840 /* We're no longer interested in notification events of an inferior
11842 observer_attach_inferior_exit (discard_pending_stop_replies
);
11844 /* Set up signal handlers. */
11845 async_sigint_remote_token
=
11846 create_async_signal_handler (async_remote_interrupt
, NULL
);
11847 async_sigint_remote_twice_token
=
11848 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11851 init_remote_threadtests ();
11854 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
11855 /* set/show remote ... */
11857 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11858 Remote protocol specific variables\n\
11859 Configure various remote-protocol specific variables such as\n\
11860 the packets being used"),
11861 &remote_set_cmdlist
, "set remote ",
11862 0 /* allow-unknown */, &setlist
);
11863 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11864 Remote protocol specific variables\n\
11865 Configure various remote-protocol specific variables such as\n\
11866 the packets being used"),
11867 &remote_show_cmdlist
, "show remote ",
11868 0 /* allow-unknown */, &showlist
);
11870 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11871 Compare section data on target to the exec file.\n\
11872 Argument is a single section name (default: all loaded sections)."),
11875 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11876 Send an arbitrary packet to a remote target.\n\
11877 maintenance packet TEXT\n\
11878 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11879 this command sends the string TEXT to the inferior, and displays the\n\
11880 response packet. GDB supplies the initial `$' character, and the\n\
11881 terminating `#' character and checksum."),
11884 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11885 Set whether to send break if interrupted."), _("\
11886 Show whether to send break if interrupted."), _("\
11887 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11888 set_remotebreak
, show_remotebreak
,
11889 &setlist
, &showlist
);
11890 cmd_name
= "remotebreak";
11891 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11892 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11893 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11894 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11895 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11897 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11898 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11900 Set interrupt sequence to remote target."), _("\
11901 Show interrupt sequence to remote target."), _("\
11902 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11903 NULL
, show_interrupt_sequence
,
11904 &remote_set_cmdlist
,
11905 &remote_show_cmdlist
);
11907 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11908 &interrupt_on_connect
, _("\
11909 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11910 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11911 If set, interrupt sequence is sent to remote target."),
11913 &remote_set_cmdlist
, &remote_show_cmdlist
);
11915 /* Install commands for configuring memory read/write packets. */
11917 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11918 Set the maximum number of bytes per memory write packet (deprecated)."),
11920 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11921 Show the maximum number of bytes per memory write packet (deprecated)."),
11923 add_cmd ("memory-write-packet-size", no_class
,
11924 set_memory_write_packet_size
, _("\
11925 Set the maximum number of bytes per memory-write packet.\n\
11926 Specify the number of bytes in a packet or 0 (zero) for the\n\
11927 default packet size. The actual limit is further reduced\n\
11928 dependent on the target. Specify ``fixed'' to disable the\n\
11929 further restriction and ``limit'' to enable that restriction."),
11930 &remote_set_cmdlist
);
11931 add_cmd ("memory-read-packet-size", no_class
,
11932 set_memory_read_packet_size
, _("\
11933 Set the maximum number of bytes per memory-read packet.\n\
11934 Specify the number of bytes in a packet or 0 (zero) for the\n\
11935 default packet size. The actual limit is further reduced\n\
11936 dependent on the target. Specify ``fixed'' to disable the\n\
11937 further restriction and ``limit'' to enable that restriction."),
11938 &remote_set_cmdlist
);
11939 add_cmd ("memory-write-packet-size", no_class
,
11940 show_memory_write_packet_size
,
11941 _("Show the maximum number of bytes per memory-write packet."),
11942 &remote_show_cmdlist
);
11943 add_cmd ("memory-read-packet-size", no_class
,
11944 show_memory_read_packet_size
,
11945 _("Show the maximum number of bytes per memory-read packet."),
11946 &remote_show_cmdlist
);
11948 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11949 &remote_hw_watchpoint_limit
, _("\
11950 Set the maximum number of target hardware watchpoints."), _("\
11951 Show the maximum number of target hardware watchpoints."), _("\
11952 Specify a negative limit for unlimited."),
11953 NULL
, NULL
, /* FIXME: i18n: The maximum
11954 number of target hardware
11955 watchpoints is %s. */
11956 &remote_set_cmdlist
, &remote_show_cmdlist
);
11957 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
11958 &remote_hw_watchpoint_length_limit
, _("\
11959 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11960 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11961 Specify a negative limit for unlimited."),
11962 NULL
, NULL
, /* FIXME: i18n: The maximum
11963 length (in bytes) of a target
11964 hardware watchpoint is %s. */
11965 &remote_set_cmdlist
, &remote_show_cmdlist
);
11966 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
11967 &remote_hw_breakpoint_limit
, _("\
11968 Set the maximum number of target hardware breakpoints."), _("\
11969 Show the maximum number of target hardware breakpoints."), _("\
11970 Specify a negative limit for unlimited."),
11971 NULL
, NULL
, /* FIXME: i18n: The maximum
11972 number of target hardware
11973 breakpoints is %s. */
11974 &remote_set_cmdlist
, &remote_show_cmdlist
);
11976 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
11977 &remote_address_size
, _("\
11978 Set the maximum size of the address (in bits) in a memory packet."), _("\
11979 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
11981 NULL
, /* FIXME: i18n: */
11982 &setlist
, &showlist
);
11984 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
11985 "X", "binary-download", 1);
11987 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
11988 "vCont", "verbose-resume", 0);
11990 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
11991 "QPassSignals", "pass-signals", 0);
11993 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
11994 "QProgramSignals", "program-signals", 0);
11996 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
11997 "qSymbol", "symbol-lookup", 0);
11999 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
12000 "P", "set-register", 1);
12002 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
12003 "p", "fetch-register", 1);
12005 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
12006 "Z0", "software-breakpoint", 0);
12008 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
12009 "Z1", "hardware-breakpoint", 0);
12011 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
12012 "Z2", "write-watchpoint", 0);
12014 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
12015 "Z3", "read-watchpoint", 0);
12017 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
12018 "Z4", "access-watchpoint", 0);
12020 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
12021 "qXfer:auxv:read", "read-aux-vector", 0);
12023 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
12024 "qXfer:features:read", "target-features", 0);
12026 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
12027 "qXfer:libraries:read", "library-info", 0);
12029 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
12030 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
12032 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
12033 "qXfer:memory-map:read", "memory-map", 0);
12035 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
12036 "qXfer:spu:read", "read-spu-object", 0);
12038 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
12039 "qXfer:spu:write", "write-spu-object", 0);
12041 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
12042 "qXfer:osdata:read", "osdata", 0);
12044 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
12045 "qXfer:threads:read", "threads", 0);
12047 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
12048 "qXfer:siginfo:read", "read-siginfo-object", 0);
12050 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
12051 "qXfer:siginfo:write", "write-siginfo-object", 0);
12053 add_packet_config_cmd
12054 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
12055 "qXfer:traceframe-info:read", "traceframe-info", 0);
12057 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
12058 "qXfer:uib:read", "unwind-info-block", 0);
12060 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
12061 "qGetTLSAddr", "get-thread-local-storage-address",
12064 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
12065 "qGetTIBAddr", "get-thread-information-block-address",
12068 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
12069 "bc", "reverse-continue", 0);
12071 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
12072 "bs", "reverse-step", 0);
12074 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
12075 "qSupported", "supported-packets", 0);
12077 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
12078 "qSearch:memory", "search-memory", 0);
12080 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
12081 "qTStatus", "trace-status", 0);
12083 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
12084 "vFile:open", "hostio-open", 0);
12086 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
12087 "vFile:pread", "hostio-pread", 0);
12089 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
12090 "vFile:pwrite", "hostio-pwrite", 0);
12092 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
12093 "vFile:close", "hostio-close", 0);
12095 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
12096 "vFile:unlink", "hostio-unlink", 0);
12098 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
12099 "vFile:readlink", "hostio-readlink", 0);
12101 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
12102 "vAttach", "attach", 0);
12104 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
12107 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
12108 "QStartNoAckMode", "noack", 0);
12110 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
12111 "vKill", "kill", 0);
12113 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
12114 "qAttached", "query-attached", 0);
12116 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
12117 "ConditionalTracepoints",
12118 "conditional-tracepoints", 0);
12120 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
12121 "ConditionalBreakpoints",
12122 "conditional-breakpoints", 0);
12124 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
12125 "BreakpointCommands",
12126 "breakpoint-commands", 0);
12128 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
12129 "FastTracepoints", "fast-tracepoints", 0);
12131 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
12132 "TracepointSource", "TracepointSource", 0);
12134 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
12135 "QAllow", "allow", 0);
12137 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
12138 "StaticTracepoints", "static-tracepoints", 0);
12140 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
12141 "InstallInTrace", "install-in-trace", 0);
12143 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
12144 "qXfer:statictrace:read", "read-sdata-object", 0);
12146 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
12147 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
12149 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
12150 "QDisableRandomization", "disable-randomization", 0);
12152 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
12153 "QAgent", "agent", 0);
12155 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
12156 "QTBuffer:size", "trace-buffer-size", 0);
12158 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
12159 "Qbtrace:off", "disable-btrace", 0);
12161 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
12162 "Qbtrace:bts", "enable-btrace", 0);
12164 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
12165 "qXfer:btrace", "read-btrace", 0);
12167 /* Keep the old ``set remote Z-packet ...'' working. Each individual
12168 Z sub-packet has its own set and show commands, but users may
12169 have sets to this variable in their .gdbinit files (or in their
12171 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
12172 &remote_Z_packet_detect
, _("\
12173 Set use of remote protocol `Z' packets"), _("\
12174 Show use of remote protocol `Z' packets "), _("\
12175 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
12177 set_remote_protocol_Z_packet_cmd
,
12178 show_remote_protocol_Z_packet_cmd
,
12179 /* FIXME: i18n: Use of remote protocol
12180 `Z' packets is %s. */
12181 &remote_set_cmdlist
, &remote_show_cmdlist
);
12183 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
12184 Manipulate files on the remote system\n\
12185 Transfer files to and from the remote target system."),
12186 &remote_cmdlist
, "remote ",
12187 0 /* allow-unknown */, &cmdlist
);
12189 add_cmd ("put", class_files
, remote_put_command
,
12190 _("Copy a local file to the remote system."),
12193 add_cmd ("get", class_files
, remote_get_command
,
12194 _("Copy a remote file to the local system."),
12197 add_cmd ("delete", class_files
, remote_delete_command
,
12198 _("Delete a remote file."),
12201 remote_exec_file
= xstrdup ("");
12202 add_setshow_string_noescape_cmd ("exec-file", class_files
,
12203 &remote_exec_file
, _("\
12204 Set the remote pathname for \"run\""), _("\
12205 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
12206 &remote_set_cmdlist
, &remote_show_cmdlist
);
12208 add_setshow_boolean_cmd ("range-stepping", class_run
,
12209 &use_range_stepping
, _("\
12210 Enable or disable range stepping."), _("\
12211 Show whether target-assisted range stepping is enabled."), _("\
12212 If on, and the target supports it, when stepping a source line, GDB\n\
12213 tells the target to step the corresponding range of addresses itself instead\n\
12214 of issuing multiple single-steps. This speeds up source level\n\
12215 stepping. If off, GDB always issues single-steps, even if range\n\
12216 stepping is supported by the target. The default is on."),
12217 set_range_stepping
,
12218 show_range_stepping
,
12222 /* Eventually initialize fileio. See fileio.c */
12223 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
12225 /* Take advantage of the fact that the LWP field is not used, to tag
12226 special ptids with it set to != 0. */
12227 magic_null_ptid
= ptid_build (42000, 1, -1);
12228 not_sent_ptid
= ptid_build (42000, 1, -2);
12229 any_thread_ptid
= ptid_build (42000, 1, 0);
12231 target_buf_size
= 2048;
12232 target_buf
= xmalloc (target_buf_size
);