1 /* Main code for remote server for GDB.
2 Copyright (C) 1989-2015 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 #include "gdbthread.h"
33 #include "btrace-common.h"
34 #include "filestuff.h"
35 #include "tracepoint.h"
39 /* The thread set with an `Hc' packet. `Hc' is deprecated in favor of
40 `vCont'. Note the multi-process extensions made `vCont' a
41 requirement, so `Hc pPID.TID' is pretty much undefined. So
42 CONT_THREAD can be null_ptid for no `Hc' thread, minus_one_ptid for
43 resuming all threads of the process (again, `Hc' isn't used for
44 multi-process), or a specific thread ptid_t. */
47 /* The thread set with an `Hg' packet. */
48 ptid_t general_thread
;
52 static int extended_protocol
;
53 static int response_needed
;
54 static int exit_requested
;
56 /* --once: Exit after the first connection has closed. */
60 int report_fork_events
;
61 int report_vfork_events
;
66 /* Whether we should attempt to disable the operating system's address
67 space randomization feature before starting an inferior. */
68 int disable_randomization
= 1;
70 static char **program_argv
, **wrapper_argv
;
72 int pass_signals
[GDB_SIGNAL_LAST
];
73 int program_signals
[GDB_SIGNAL_LAST
];
74 int program_signals_p
;
76 /* The PID of the originally created or attached inferior. Used to
77 send signals to the process when GDB sends us an asynchronous interrupt
78 (user hitting Control-C in the client), and to wait for the child to exit
79 when no longer debugging it. */
81 unsigned long signal_pid
;
84 /* A file descriptor for the controlling terminal. */
87 /* TERMINAL_FD's original foreground group. */
88 pid_t old_foreground_pgrp
;
90 /* Hand back terminal ownership to the original foreground group. */
93 restore_old_foreground_pgrp (void)
95 tcsetpgrp (terminal_fd
, old_foreground_pgrp
);
99 /* Set if you want to disable optional thread related packets support
100 in gdbserver, for the sake of testing GDB against stubs that don't
102 int disable_packet_vCont
;
103 int disable_packet_Tthread
;
104 int disable_packet_qC
;
105 int disable_packet_qfThreadInfo
;
107 /* Last status reported to GDB. */
108 static struct target_waitstatus last_status
;
109 static ptid_t last_ptid
;
111 static char *own_buf
;
112 static unsigned char *mem_buf
;
114 /* A sub-class of 'struct notif_event' for stop, holding information
115 relative to a single stop reply. We keep a queue of these to
116 push to GDB in non-stop mode. */
120 struct notif_event base
;
122 /* Thread or process that got the event. */
126 struct target_waitstatus status
;
129 /* The current btrace configuration. This is gdbserver's mirror of GDB's
130 btrace configuration. */
131 static struct btrace_config current_btrace_conf
;
133 DEFINE_QUEUE_P (notif_event_p
);
135 /* Put a stop reply to the stop reply queue. */
138 queue_stop_reply (ptid_t ptid
, struct target_waitstatus
*status
)
140 struct vstop_notif
*new_notif
= xmalloc (sizeof (*new_notif
));
142 new_notif
->ptid
= ptid
;
143 new_notif
->status
= *status
;
145 notif_event_enque (¬if_stop
, (struct notif_event
*) new_notif
);
149 remove_all_on_match_pid (QUEUE (notif_event_p
) *q
,
150 QUEUE_ITER (notif_event_p
) *iter
,
151 struct notif_event
*event
,
157 || ptid_get_pid (((struct vstop_notif
*) event
)->ptid
) == *pid
)
159 if (q
->free_func
!= NULL
)
160 q
->free_func (event
);
162 QUEUE_remove_elem (notif_event_p
, q
, iter
);
168 /* Get rid of the currently pending stop replies for PID. If PID is
169 -1, then apply to all processes. */
172 discard_queued_stop_replies (int pid
)
174 QUEUE_iterate (notif_event_p
, notif_stop
.queue
,
175 remove_all_on_match_pid
, &pid
);
179 vstop_notif_reply (struct notif_event
*event
, char *own_buf
)
181 struct vstop_notif
*vstop
= (struct vstop_notif
*) event
;
183 prepare_resume_reply (own_buf
, vstop
->ptid
, &vstop
->status
);
186 struct notif_server notif_stop
=
188 "vStopped", "Stop", NULL
, vstop_notif_reply
,
192 target_running (void)
194 return get_first_thread () != NULL
;
198 start_inferior (char **argv
)
200 char **new_argv
= argv
;
202 if (wrapper_argv
!= NULL
)
206 for (i
= 0; wrapper_argv
[i
] != NULL
; i
++)
208 for (i
= 0; argv
[i
] != NULL
; i
++)
210 new_argv
= alloca (sizeof (char *) * count
);
212 for (i
= 0; wrapper_argv
[i
] != NULL
; i
++)
213 new_argv
[count
++] = wrapper_argv
[i
];
214 for (i
= 0; argv
[i
] != NULL
; i
++)
215 new_argv
[count
++] = argv
[i
];
216 new_argv
[count
] = NULL
;
222 for (i
= 0; new_argv
[i
]; ++i
)
223 debug_printf ("new_argv[%d] = \"%s\"\n", i
, new_argv
[i
]);
228 signal (SIGTTOU
, SIG_DFL
);
229 signal (SIGTTIN
, SIG_DFL
);
232 signal_pid
= create_inferior (new_argv
[0], new_argv
);
234 /* FIXME: we don't actually know at this point that the create
235 actually succeeded. We won't know that until we wait. */
236 fprintf (stderr
, "Process %s created; pid = %ld\n", argv
[0],
241 signal (SIGTTOU
, SIG_IGN
);
242 signal (SIGTTIN
, SIG_IGN
);
243 terminal_fd
= fileno (stderr
);
244 old_foreground_pgrp
= tcgetpgrp (terminal_fd
);
245 tcsetpgrp (terminal_fd
, signal_pid
);
246 atexit (restore_old_foreground_pgrp
);
249 if (wrapper_argv
!= NULL
)
251 struct thread_resume resume_info
;
253 memset (&resume_info
, 0, sizeof (resume_info
));
254 resume_info
.thread
= pid_to_ptid (signal_pid
);
255 resume_info
.kind
= resume_continue
;
258 last_ptid
= mywait (pid_to_ptid (signal_pid
), &last_status
, 0, 0);
260 if (last_status
.kind
!= TARGET_WAITKIND_STOPPED
)
265 (*the_target
->resume
) (&resume_info
, 1);
267 last_ptid
= mywait (pid_to_ptid (signal_pid
), &last_status
, 0, 0);
268 if (last_status
.kind
!= TARGET_WAITKIND_STOPPED
)
271 current_thread
->last_resume_kind
= resume_stop
;
272 current_thread
->last_status
= last_status
;
274 while (last_status
.value
.sig
!= GDB_SIGNAL_TRAP
);
279 /* Wait till we are at 1st instruction in program, return new pid
280 (assuming success). */
281 last_ptid
= mywait (pid_to_ptid (signal_pid
), &last_status
, 0, 0);
283 if (last_status
.kind
!= TARGET_WAITKIND_EXITED
284 && last_status
.kind
!= TARGET_WAITKIND_SIGNALLED
)
286 current_thread
->last_resume_kind
= resume_stop
;
287 current_thread
->last_status
= last_status
;
290 mourn_inferior (find_process_pid (ptid_get_pid (last_ptid
)));
296 attach_inferior (int pid
)
298 /* myattach should return -1 if attaching is unsupported,
299 0 if it succeeded, and call error() otherwise. */
301 if (myattach (pid
) != 0)
304 fprintf (stderr
, "Attached; pid = %d\n", pid
);
307 /* FIXME - It may be that we should get the SIGNAL_PID from the
308 attach function, so that it can be the main thread instead of
309 whichever we were told to attach to. */
314 last_ptid
= mywait (pid_to_ptid (pid
), &last_status
, 0, 0);
316 /* GDB knows to ignore the first SIGSTOP after attaching to a running
317 process using the "attach" command, but this is different; it's
318 just using "target remote". Pretend it's just starting up. */
319 if (last_status
.kind
== TARGET_WAITKIND_STOPPED
320 && last_status
.value
.sig
== GDB_SIGNAL_STOP
)
321 last_status
.value
.sig
= GDB_SIGNAL_TRAP
;
323 current_thread
->last_resume_kind
= resume_stop
;
324 current_thread
->last_status
= last_status
;
330 extern int remote_debug
;
332 /* Decode a qXfer read request. Return 0 if everything looks OK,
336 decode_xfer_read (char *buf
, CORE_ADDR
*ofs
, unsigned int *len
)
338 /* After the read marker and annex, qXfer looks like a
339 traditional 'm' packet. */
340 decode_m_packet (buf
, ofs
, len
);
346 decode_xfer (char *buf
, char **object
, char **rw
, char **annex
, char **offset
)
348 /* Extract and NUL-terminate the object. */
350 while (*buf
&& *buf
!= ':')
356 /* Extract and NUL-terminate the read/write action. */
358 while (*buf
&& *buf
!= ':')
364 /* Extract and NUL-terminate the annex. */
366 while (*buf
&& *buf
!= ':')
376 /* Write the response to a successful qXfer read. Returns the
377 length of the (binary) data stored in BUF, corresponding
378 to as much of DATA/LEN as we could fit. IS_MORE controls
379 the first character of the response. */
381 write_qxfer_response (char *buf
, const void *data
, int len
, int is_more
)
390 return remote_escape_output (data
, len
, (unsigned char *) buf
+ 1, &out_len
,
394 /* Handle btrace enabling in BTS format. */
397 handle_btrace_enable_bts (struct thread_info
*thread
)
399 if (thread
->btrace
!= NULL
)
400 return "E.Btrace already enabled.";
402 current_btrace_conf
.format
= BTRACE_FORMAT_BTS
;
403 thread
->btrace
= target_enable_btrace (thread
->entry
.id
,
404 ¤t_btrace_conf
);
405 if (thread
->btrace
== NULL
)
406 return "E.Could not enable btrace.";
411 /* Handle btrace disabling. */
414 handle_btrace_disable (struct thread_info
*thread
)
417 if (thread
->btrace
== NULL
)
418 return "E.Branch tracing not enabled.";
420 if (target_disable_btrace (thread
->btrace
) != 0)
421 return "E.Could not disable branch tracing.";
423 thread
->btrace
= NULL
;
427 /* Handle the "Qbtrace" packet. */
430 handle_btrace_general_set (char *own_buf
)
432 struct thread_info
*thread
;
436 if (!startswith (own_buf
, "Qbtrace:"))
439 op
= own_buf
+ strlen ("Qbtrace:");
441 if (ptid_equal (general_thread
, null_ptid
)
442 || ptid_equal (general_thread
, minus_one_ptid
))
444 strcpy (own_buf
, "E.Must select a single thread.");
448 thread
= find_thread_ptid (general_thread
);
451 strcpy (own_buf
, "E.No such thread.");
457 if (strcmp (op
, "bts") == 0)
458 err
= handle_btrace_enable_bts (thread
);
459 else if (strcmp (op
, "off") == 0)
460 err
= handle_btrace_disable (thread
);
462 err
= "E.Bad Qbtrace operation. Use bts or off.";
465 strcpy (own_buf
, err
);
472 /* Handle the "Qbtrace-conf" packet. */
475 handle_btrace_conf_general_set (char *own_buf
)
477 struct thread_info
*thread
;
480 if (!startswith (own_buf
, "Qbtrace-conf:"))
483 op
= own_buf
+ strlen ("Qbtrace-conf:");
485 if (ptid_equal (general_thread
, null_ptid
)
486 || ptid_equal (general_thread
, minus_one_ptid
))
488 strcpy (own_buf
, "E.Must select a single thread.");
492 thread
= find_thread_ptid (general_thread
);
495 strcpy (own_buf
, "E.No such thread.");
499 if (startswith (op
, "bts:size="))
505 size
= strtoul (op
+ strlen ("bts:size="), &endp
, 16);
506 if (endp
== NULL
|| *endp
!= 0 || errno
!= 0 || size
> UINT_MAX
)
508 strcpy (own_buf
, "E.Bad size value.");
512 current_btrace_conf
.bts
.size
= (unsigned int) size
;
516 strcpy (own_buf
, "E.Bad Qbtrace configuration option.");
524 /* Handle all of the extended 'Q' packets. */
527 handle_general_set (char *own_buf
)
529 if (startswith (own_buf
, "QPassSignals:"))
531 int numsigs
= (int) GDB_SIGNAL_LAST
, i
;
532 const char *p
= own_buf
+ strlen ("QPassSignals:");
535 p
= decode_address_to_semicolon (&cursig
, p
);
536 for (i
= 0; i
< numsigs
; i
++)
542 /* Keep looping, to clear the remaining signals. */
545 p
= decode_address_to_semicolon (&cursig
, p
);
550 strcpy (own_buf
, "OK");
554 if (startswith (own_buf
, "QProgramSignals:"))
556 int numsigs
= (int) GDB_SIGNAL_LAST
, i
;
557 const char *p
= own_buf
+ strlen ("QProgramSignals:");
560 program_signals_p
= 1;
562 p
= decode_address_to_semicolon (&cursig
, p
);
563 for (i
= 0; i
< numsigs
; i
++)
567 program_signals
[i
] = 1;
569 /* Keep looping, to clear the remaining signals. */
572 p
= decode_address_to_semicolon (&cursig
, p
);
575 program_signals
[i
] = 0;
577 strcpy (own_buf
, "OK");
581 if (strcmp (own_buf
, "QStartNoAckMode") == 0)
585 fprintf (stderr
, "[noack mode enabled]\n");
594 if (startswith (own_buf
, "QNonStop:"))
596 char *mode
= own_buf
+ 9;
600 if (strcmp (mode
, "0") == 0)
602 else if (strcmp (mode
, "1") == 0)
606 /* We don't know what this mode is, so complain to
608 fprintf (stderr
, "Unknown non-stop mode requested: %s\n",
614 req_str
= req
? "non-stop" : "all-stop";
615 if (start_non_stop (req
) != 0)
617 fprintf (stderr
, "Setting %s mode failed\n", req_str
);
625 fprintf (stderr
, "[%s mode enabled]\n", req_str
);
631 if (startswith (own_buf
, "QDisableRandomization:"))
633 char *packet
= own_buf
+ strlen ("QDisableRandomization:");
636 unpack_varlen_hex (packet
, &setting
);
637 disable_randomization
= setting
;
641 if (disable_randomization
)
642 fprintf (stderr
, "[address space randomization disabled]\n");
644 fprintf (stderr
, "[address space randomization enabled]\n");
651 if (target_supports_tracepoints ()
652 && handle_tracepoint_general_set (own_buf
))
655 if (startswith (own_buf
, "QAgent:"))
657 char *mode
= own_buf
+ strlen ("QAgent:");
660 if (strcmp (mode
, "0") == 0)
662 else if (strcmp (mode
, "1") == 0)
666 /* We don't know what this value is, so complain to GDB. */
667 sprintf (own_buf
, "E.Unknown QAgent value");
671 /* Update the flag. */
674 fprintf (stderr
, "[%s agent]\n", req
? "Enable" : "Disable");
679 if (handle_btrace_general_set (own_buf
))
682 if (handle_btrace_conf_general_set (own_buf
))
685 /* Otherwise we didn't know what packet it was. Say we didn't
691 get_features_xml (const char *annex
)
693 const struct target_desc
*desc
= current_target_desc ();
695 /* `desc->xmltarget' defines what to return when looking for the
696 "target.xml" file. Its contents can either be verbatim XML code
697 (prefixed with a '@') or else the name of the actual XML file to
698 be used in place of "target.xml".
700 This variable is set up from the auto-generated
701 init_registers_... routine for the current target. */
703 if (desc
->xmltarget
!= NULL
&& strcmp (annex
, "target.xml") == 0)
705 if (*desc
->xmltarget
== '@')
706 return desc
->xmltarget
+ 1;
708 annex
= desc
->xmltarget
;
713 extern const char *const xml_builtin
[][2];
716 /* Look for the annex. */
717 for (i
= 0; xml_builtin
[i
][0] != NULL
; i
++)
718 if (strcmp (annex
, xml_builtin
[i
][0]) == 0)
721 if (xml_builtin
[i
][0] != NULL
)
722 return xml_builtin
[i
][1];
730 monitor_show_help (void)
732 monitor_output ("The following monitor commands are supported:\n");
733 monitor_output (" set debug <0|1>\n");
734 monitor_output (" Enable general debugging messages\n");
735 monitor_output (" set debug-hw-points <0|1>\n");
736 monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n");
737 monitor_output (" set remote-debug <0|1>\n");
738 monitor_output (" Enable remote protocol debugging messages\n");
739 monitor_output (" set debug-format option1[,option2,...]\n");
740 monitor_output (" Add additional information to debugging messages\n");
741 monitor_output (" Options: all, none");
742 monitor_output (", timestamp");
743 monitor_output ("\n");
744 monitor_output (" exit\n");
745 monitor_output (" Quit GDBserver\n");
748 /* Read trace frame or inferior memory. Returns the number of bytes
749 actually read, zero when no further transfer is possible, and -1 on
750 error. Return of a positive value smaller than LEN does not
751 indicate there's no more to be read, only the end of the transfer.
752 E.g., when GDB reads memory from a traceframe, a first request may
753 be served from a memory block that does not cover the whole request
754 length. A following request gets the rest served from either
755 another block (of the same traceframe) or from the read-only
759 gdb_read_memory (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
)
763 if (current_traceframe
>= 0)
766 ULONGEST length
= len
;
768 if (traceframe_read_mem (current_traceframe
,
769 memaddr
, myaddr
, len
, &nbytes
))
771 /* Data read from trace buffer, we're done. */
774 if (!in_readonly_region (memaddr
, length
))
776 /* Otherwise we have a valid readonly case, fall through. */
777 /* (assume no half-trace half-real blocks for now) */
780 res
= prepare_to_access_memory ();
783 res
= read_inferior_memory (memaddr
, myaddr
, len
);
784 done_accessing_memory ();
786 return res
== 0 ? len
: -1;
792 /* Write trace frame or inferior memory. Actually, writing to trace
793 frames is forbidden. */
796 gdb_write_memory (CORE_ADDR memaddr
, const unsigned char *myaddr
, int len
)
798 if (current_traceframe
>= 0)
804 ret
= prepare_to_access_memory ();
807 ret
= write_inferior_memory (memaddr
, myaddr
, len
);
808 done_accessing_memory ();
814 /* Subroutine of handle_search_memory to simplify it. */
817 handle_search_memory_1 (CORE_ADDR start_addr
, CORE_ADDR search_space_len
,
818 gdb_byte
*pattern
, unsigned pattern_len
,
819 gdb_byte
*search_buf
,
820 unsigned chunk_size
, unsigned search_buf_size
,
821 CORE_ADDR
*found_addrp
)
823 /* Prime the search buffer. */
825 if (gdb_read_memory (start_addr
, search_buf
, search_buf_size
)
828 warning ("Unable to access %ld bytes of target "
829 "memory at 0x%lx, halting search.",
830 (long) search_buf_size
, (long) start_addr
);
834 /* Perform the search.
836 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
837 When we've scanned N bytes we copy the trailing bytes to the start and
838 read in another N bytes. */
840 while (search_space_len
>= pattern_len
)
843 unsigned nr_search_bytes
= (search_space_len
< search_buf_size
847 found_ptr
= memmem (search_buf
, nr_search_bytes
, pattern
, pattern_len
);
849 if (found_ptr
!= NULL
)
851 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
852 *found_addrp
= found_addr
;
856 /* Not found in this chunk, skip to next chunk. */
858 /* Don't let search_space_len wrap here, it's unsigned. */
859 if (search_space_len
>= chunk_size
)
860 search_space_len
-= chunk_size
;
862 search_space_len
= 0;
864 if (search_space_len
>= pattern_len
)
866 unsigned keep_len
= search_buf_size
- chunk_size
;
867 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
870 /* Copy the trailing part of the previous iteration to the front
871 of the buffer for the next iteration. */
872 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
874 nr_to_read
= (search_space_len
- keep_len
< chunk_size
875 ? search_space_len
- keep_len
878 if (gdb_read_memory (read_addr
, search_buf
+ keep_len
,
879 nr_to_read
) != search_buf_size
)
881 warning ("Unable to access %ld bytes of target memory "
882 "at 0x%lx, halting search.",
883 (long) nr_to_read
, (long) read_addr
);
887 start_addr
+= chunk_size
;
896 /* Handle qSearch:memory packets. */
899 handle_search_memory (char *own_buf
, int packet_len
)
901 CORE_ADDR start_addr
;
902 CORE_ADDR search_space_len
;
904 unsigned int pattern_len
;
905 /* NOTE: also defined in find.c testcase. */
906 #define SEARCH_CHUNK_SIZE 16000
907 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
908 /* Buffer to hold memory contents for searching. */
909 gdb_byte
*search_buf
;
910 unsigned search_buf_size
;
912 CORE_ADDR found_addr
;
913 int cmd_name_len
= sizeof ("qSearch:memory:") - 1;
915 pattern
= malloc (packet_len
);
918 error ("Unable to allocate memory to perform the search");
919 strcpy (own_buf
, "E00");
922 if (decode_search_memory_packet (own_buf
+ cmd_name_len
,
923 packet_len
- cmd_name_len
,
924 &start_addr
, &search_space_len
,
925 pattern
, &pattern_len
) < 0)
928 error ("Error in parsing qSearch:memory packet");
929 strcpy (own_buf
, "E00");
933 search_buf_size
= chunk_size
+ pattern_len
- 1;
935 /* No point in trying to allocate a buffer larger than the search space. */
936 if (search_space_len
< search_buf_size
)
937 search_buf_size
= search_space_len
;
939 search_buf
= malloc (search_buf_size
);
940 if (search_buf
== NULL
)
943 error ("Unable to allocate memory to perform the search");
944 strcpy (own_buf
, "E00");
948 found
= handle_search_memory_1 (start_addr
, search_space_len
,
949 pattern
, pattern_len
,
950 search_buf
, chunk_size
, search_buf_size
,
954 sprintf (own_buf
, "1,%lx", (long) found_addr
);
956 strcpy (own_buf
, "0");
958 strcpy (own_buf
, "E00");
964 #define require_running(BUF) \
965 if (!target_running ()) \
971 /* Parse options to --debug-format= and "monitor set debug-format".
972 ARG is the text after "--debug-format=" or "monitor set debug-format".
973 IS_MONITOR is non-zero if we're invoked via "monitor set debug-format".
974 This triggers calls to monitor_output.
975 The result is NULL if all options were parsed ok, otherwise an error
976 message which the caller must free.
978 N.B. These commands affect all debug format settings, they are not
979 cumulative. If a format is not specified, it is turned off.
980 However, we don't go to extra trouble with things like
981 "monitor set debug-format all,none,timestamp".
982 Instead we just parse them one at a time, in order.
984 The syntax for "monitor set debug" we support here is not identical
985 to gdb's "set debug foo on|off" because we also use this function to
986 parse "--debug-format=foo,bar". */
989 parse_debug_format_options (const char *arg
, int is_monitor
)
991 VEC (char_ptr
) *options
;
995 /* First turn all debug format options off. */
998 /* First remove leading spaces, for "monitor set debug-format". */
999 while (isspace (*arg
))
1002 options
= delim_string_to_char_ptr_vec (arg
, ',');
1004 for (ix
= 0; VEC_iterate (char_ptr
, options
, ix
, option
); ++ix
)
1006 if (strcmp (option
, "all") == 0)
1008 debug_timestamp
= 1;
1010 monitor_output ("All extra debug format options enabled.\n");
1012 else if (strcmp (option
, "none") == 0)
1014 debug_timestamp
= 0;
1016 monitor_output ("All extra debug format options disabled.\n");
1018 else if (strcmp (option
, "timestamp") == 0)
1020 debug_timestamp
= 1;
1022 monitor_output ("Timestamps will be added to debug output.\n");
1024 else if (*option
== '\0')
1026 /* An empty option, e.g., "--debug-format=foo,,bar", is ignored. */
1031 char *msg
= xstrprintf ("Unknown debug-format argument: \"%s\"\n",
1034 free_char_ptr_vec (options
);
1039 free_char_ptr_vec (options
);
1043 /* Handle monitor commands not handled by target-specific handlers. */
1046 handle_monitor_command (char *mon
, char *own_buf
)
1048 if (strcmp (mon
, "set debug 1") == 0)
1051 monitor_output ("Debug output enabled.\n");
1053 else if (strcmp (mon
, "set debug 0") == 0)
1056 monitor_output ("Debug output disabled.\n");
1058 else if (strcmp (mon
, "set debug-hw-points 1") == 0)
1060 show_debug_regs
= 1;
1061 monitor_output ("H/W point debugging output enabled.\n");
1063 else if (strcmp (mon
, "set debug-hw-points 0") == 0)
1065 show_debug_regs
= 0;
1066 monitor_output ("H/W point debugging output disabled.\n");
1068 else if (strcmp (mon
, "set remote-debug 1") == 0)
1071 monitor_output ("Protocol debug output enabled.\n");
1073 else if (strcmp (mon
, "set remote-debug 0") == 0)
1076 monitor_output ("Protocol debug output disabled.\n");
1078 else if (startswith (mon
, "set debug-format "))
1081 = parse_debug_format_options (mon
+ sizeof ("set debug-format ") - 1,
1084 if (error_msg
!= NULL
)
1086 monitor_output (error_msg
);
1087 monitor_show_help ();
1088 write_enn (own_buf
);
1092 else if (strcmp (mon
, "help") == 0)
1093 monitor_show_help ();
1094 else if (strcmp (mon
, "exit") == 0)
1098 monitor_output ("Unknown monitor command.\n\n");
1099 monitor_show_help ();
1100 write_enn (own_buf
);
1104 /* Associates a callback with each supported qXfer'able object. */
1108 /* The object this handler handles. */
1111 /* Request that the target transfer up to LEN 8-bit bytes of the
1112 target's OBJECT. The OFFSET, for a seekable object, specifies
1113 the starting point. The ANNEX can be used to provide additional
1114 data-specific information to the target.
1116 Return the number of bytes actually transfered, zero when no
1117 further transfer is possible, -1 on error, -2 when the transfer
1118 is not supported, and -3 on a verbose error message that should
1119 be preserved. Return of a positive value smaller than LEN does
1120 not indicate the end of the object, only the end of the transfer.
1122 One, and only one, of readbuf or writebuf must be non-NULL. */
1123 int (*xfer
) (const char *annex
,
1124 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1125 ULONGEST offset
, LONGEST len
);
1128 /* Handle qXfer:auxv:read. */
1131 handle_qxfer_auxv (const char *annex
,
1132 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1133 ULONGEST offset
, LONGEST len
)
1135 if (the_target
->read_auxv
== NULL
|| writebuf
!= NULL
)
1138 if (annex
[0] != '\0' || !target_running ())
1141 return (*the_target
->read_auxv
) (offset
, readbuf
, len
);
1144 /* Handle qXfer:exec-file:read. */
1147 handle_qxfer_exec_file (const char *const_annex
,
1148 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1149 ULONGEST offset
, LONGEST len
)
1155 if (the_target
->pid_to_exec_file
== NULL
|| writebuf
!= NULL
)
1158 if (const_annex
[0] == '\0')
1160 if (current_thread
== NULL
)
1163 pid
= pid_of (current_thread
);
1167 char *annex
= alloca (strlen (const_annex
) + 1);
1169 strcpy (annex
, const_annex
);
1170 annex
= unpack_varlen_hex (annex
, &pid
);
1172 if (annex
[0] != '\0')
1179 file
= (*the_target
->pid_to_exec_file
) (pid
);
1183 total_len
= strlen (file
);
1185 if (offset
> total_len
)
1188 if (offset
+ len
> total_len
)
1189 len
= total_len
- offset
;
1191 memcpy (readbuf
, file
+ offset
, len
);
1195 /* Handle qXfer:features:read. */
1198 handle_qxfer_features (const char *annex
,
1199 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1200 ULONGEST offset
, LONGEST len
)
1202 const char *document
;
1205 if (writebuf
!= NULL
)
1208 if (!target_running ())
1211 /* Grab the correct annex. */
1212 document
= get_features_xml (annex
);
1213 if (document
== NULL
)
1216 total_len
= strlen (document
);
1218 if (offset
> total_len
)
1221 if (offset
+ len
> total_len
)
1222 len
= total_len
- offset
;
1224 memcpy (readbuf
, document
+ offset
, len
);
1228 /* Worker routine for handle_qxfer_libraries.
1229 Add to the length pointed to by ARG a conservative estimate of the
1230 length needed to transmit the file name of INF. */
1233 accumulate_file_name_length (struct inferior_list_entry
*inf
, void *arg
)
1235 struct dll_info
*dll
= (struct dll_info
*) inf
;
1236 unsigned int *total_len
= arg
;
1238 /* Over-estimate the necessary memory. Assume that every character
1239 in the library name must be escaped. */
1240 *total_len
+= 128 + 6 * strlen (dll
->name
);
1243 /* Worker routine for handle_qxfer_libraries.
1244 Emit the XML to describe the library in INF. */
1247 emit_dll_description (struct inferior_list_entry
*inf
, void *arg
)
1249 struct dll_info
*dll
= (struct dll_info
*) inf
;
1254 strcpy (p
, " <library name=\"");
1256 name
= xml_escape_text (dll
->name
);
1260 strcpy (p
, "\"><segment address=\"");
1262 sprintf (p
, "0x%lx", (long) dll
->base_addr
);
1264 strcpy (p
, "\"/></library>\n");
1270 /* Handle qXfer:libraries:read. */
1273 handle_qxfer_libraries (const char *annex
,
1274 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1275 ULONGEST offset
, LONGEST len
)
1277 unsigned int total_len
;
1280 if (writebuf
!= NULL
)
1283 if (annex
[0] != '\0' || !target_running ())
1287 for_each_inferior_with_data (&all_dlls
, accumulate_file_name_length
,
1290 document
= malloc (total_len
);
1291 if (document
== NULL
)
1294 strcpy (document
, "<library-list>\n");
1295 p
= document
+ strlen (document
);
1297 for_each_inferior_with_data (&all_dlls
, emit_dll_description
, &p
);
1299 strcpy (p
, "</library-list>\n");
1301 total_len
= strlen (document
);
1303 if (offset
> total_len
)
1309 if (offset
+ len
> total_len
)
1310 len
= total_len
- offset
;
1312 memcpy (readbuf
, document
+ offset
, len
);
1317 /* Handle qXfer:libraries-svr4:read. */
1320 handle_qxfer_libraries_svr4 (const char *annex
,
1321 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1322 ULONGEST offset
, LONGEST len
)
1324 if (writebuf
!= NULL
)
1327 if (!target_running () || the_target
->qxfer_libraries_svr4
== NULL
)
1330 return the_target
->qxfer_libraries_svr4 (annex
, readbuf
, writebuf
, offset
, len
);
1333 /* Handle qXfer:osadata:read. */
1336 handle_qxfer_osdata (const char *annex
,
1337 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1338 ULONGEST offset
, LONGEST len
)
1340 if (the_target
->qxfer_osdata
== NULL
|| writebuf
!= NULL
)
1343 return (*the_target
->qxfer_osdata
) (annex
, readbuf
, NULL
, offset
, len
);
1346 /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */
1349 handle_qxfer_siginfo (const char *annex
,
1350 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1351 ULONGEST offset
, LONGEST len
)
1353 if (the_target
->qxfer_siginfo
== NULL
)
1356 if (annex
[0] != '\0' || !target_running ())
1359 return (*the_target
->qxfer_siginfo
) (annex
, readbuf
, writebuf
, offset
, len
);
1362 /* Handle qXfer:spu:read and qXfer:spu:write. */
1365 handle_qxfer_spu (const char *annex
,
1366 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1367 ULONGEST offset
, LONGEST len
)
1369 if (the_target
->qxfer_spu
== NULL
)
1372 if (!target_running ())
1375 return (*the_target
->qxfer_spu
) (annex
, readbuf
, writebuf
, offset
, len
);
1378 /* Handle qXfer:statictrace:read. */
1381 handle_qxfer_statictrace (const char *annex
,
1382 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1383 ULONGEST offset
, LONGEST len
)
1387 if (writebuf
!= NULL
)
1390 if (annex
[0] != '\0' || !target_running () || current_traceframe
== -1)
1393 if (traceframe_read_sdata (current_traceframe
, offset
,
1394 readbuf
, len
, &nbytes
))
1399 /* Helper for handle_qxfer_threads_proper.
1400 Emit the XML to describe the thread of INF. */
1403 handle_qxfer_threads_worker (struct inferior_list_entry
*inf
, void *arg
)
1405 struct thread_info
*thread
= (struct thread_info
*) inf
;
1406 struct buffer
*buffer
= arg
;
1407 ptid_t ptid
= thread_to_gdb_id (thread
);
1409 int core
= target_core_of_thread (ptid
);
1412 write_ptid (ptid_s
, ptid
);
1416 sprintf (core_s
, "%d", core
);
1417 buffer_xml_printf (buffer
, "<thread id=\"%s\" core=\"%s\"/>\n",
1422 buffer_xml_printf (buffer
, "<thread id=\"%s\"/>\n",
1427 /* Helper for handle_qxfer_threads. */
1430 handle_qxfer_threads_proper (struct buffer
*buffer
)
1432 buffer_grow_str (buffer
, "<threads>\n");
1434 for_each_inferior_with_data (&all_threads
, handle_qxfer_threads_worker
,
1437 buffer_grow_str0 (buffer
, "</threads>\n");
1440 /* Handle qXfer:threads:read. */
1443 handle_qxfer_threads (const char *annex
,
1444 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1445 ULONGEST offset
, LONGEST len
)
1447 static char *result
= 0;
1448 static unsigned int result_length
= 0;
1450 if (writebuf
!= NULL
)
1453 if (!target_running () || annex
[0] != '\0')
1458 struct buffer buffer
;
1459 /* When asked for data at offset 0, generate everything and store into
1460 'result'. Successive reads will be served off 'result'. */
1464 buffer_init (&buffer
);
1466 handle_qxfer_threads_proper (&buffer
);
1468 result
= buffer_finish (&buffer
);
1469 result_length
= strlen (result
);
1470 buffer_free (&buffer
);
1473 if (offset
>= result_length
)
1475 /* We're out of data. */
1482 if (len
> result_length
- offset
)
1483 len
= result_length
- offset
;
1485 memcpy (readbuf
, result
+ offset
, len
);
1490 /* Handle qXfer:traceframe-info:read. */
1493 handle_qxfer_traceframe_info (const char *annex
,
1494 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1495 ULONGEST offset
, LONGEST len
)
1497 static char *result
= 0;
1498 static unsigned int result_length
= 0;
1500 if (writebuf
!= NULL
)
1503 if (!target_running () || annex
[0] != '\0' || current_traceframe
== -1)
1508 struct buffer buffer
;
1510 /* When asked for data at offset 0, generate everything and
1511 store into 'result'. Successive reads will be served off
1515 buffer_init (&buffer
);
1517 traceframe_read_info (current_traceframe
, &buffer
);
1519 result
= buffer_finish (&buffer
);
1520 result_length
= strlen (result
);
1521 buffer_free (&buffer
);
1524 if (offset
>= result_length
)
1526 /* We're out of data. */
1533 if (len
> result_length
- offset
)
1534 len
= result_length
- offset
;
1536 memcpy (readbuf
, result
+ offset
, len
);
1540 /* Handle qXfer:fdpic:read. */
1543 handle_qxfer_fdpic (const char *annex
, gdb_byte
*readbuf
,
1544 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1546 if (the_target
->read_loadmap
== NULL
)
1549 if (!target_running ())
1552 return (*the_target
->read_loadmap
) (annex
, offset
, readbuf
, len
);
1555 /* Handle qXfer:btrace:read. */
1558 handle_qxfer_btrace (const char *annex
,
1559 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1560 ULONGEST offset
, LONGEST len
)
1562 static struct buffer cache
;
1563 struct thread_info
*thread
;
1566 if (the_target
->read_btrace
== NULL
|| writebuf
!= NULL
)
1569 if (!target_running ())
1572 if (ptid_equal (general_thread
, null_ptid
)
1573 || ptid_equal (general_thread
, minus_one_ptid
))
1575 strcpy (own_buf
, "E.Must select a single thread.");
1579 thread
= find_thread_ptid (general_thread
);
1582 strcpy (own_buf
, "E.No such thread.");
1586 if (thread
->btrace
== NULL
)
1588 strcpy (own_buf
, "E.Btrace not enabled.");
1592 if (strcmp (annex
, "all") == 0)
1593 type
= BTRACE_READ_ALL
;
1594 else if (strcmp (annex
, "new") == 0)
1595 type
= BTRACE_READ_NEW
;
1596 else if (strcmp (annex
, "delta") == 0)
1597 type
= BTRACE_READ_DELTA
;
1600 strcpy (own_buf
, "E.Bad annex.");
1606 buffer_free (&cache
);
1608 result
= target_read_btrace (thread
->btrace
, &cache
, type
);
1611 memcpy (own_buf
, cache
.buffer
, cache
.used_size
);
1615 else if (offset
> cache
.used_size
)
1617 buffer_free (&cache
);
1621 if (len
> cache
.used_size
- offset
)
1622 len
= cache
.used_size
- offset
;
1624 memcpy (readbuf
, cache
.buffer
+ offset
, len
);
1629 /* Handle qXfer:btrace-conf:read. */
1632 handle_qxfer_btrace_conf (const char *annex
,
1633 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1634 ULONGEST offset
, LONGEST len
)
1636 static struct buffer cache
;
1637 struct thread_info
*thread
;
1640 if (the_target
->read_btrace_conf
== NULL
|| writebuf
!= NULL
)
1643 if (annex
[0] != '\0' || !target_running ())
1646 if (ptid_equal (general_thread
, null_ptid
)
1647 || ptid_equal (general_thread
, minus_one_ptid
))
1649 strcpy (own_buf
, "E.Must select a single thread.");
1653 thread
= find_thread_ptid (general_thread
);
1656 strcpy (own_buf
, "E.No such thread.");
1660 if (thread
->btrace
== NULL
)
1662 strcpy (own_buf
, "E.Btrace not enabled.");
1668 buffer_free (&cache
);
1670 result
= target_read_btrace_conf (thread
->btrace
, &cache
);
1673 memcpy (own_buf
, cache
.buffer
, cache
.used_size
);
1677 else if (offset
> cache
.used_size
)
1679 buffer_free (&cache
);
1683 if (len
> cache
.used_size
- offset
)
1684 len
= cache
.used_size
- offset
;
1686 memcpy (readbuf
, cache
.buffer
+ offset
, len
);
1691 static const struct qxfer qxfer_packets
[] =
1693 { "auxv", handle_qxfer_auxv
},
1694 { "btrace", handle_qxfer_btrace
},
1695 { "btrace-conf", handle_qxfer_btrace_conf
},
1696 { "exec-file", handle_qxfer_exec_file
},
1697 { "fdpic", handle_qxfer_fdpic
},
1698 { "features", handle_qxfer_features
},
1699 { "libraries", handle_qxfer_libraries
},
1700 { "libraries-svr4", handle_qxfer_libraries_svr4
},
1701 { "osdata", handle_qxfer_osdata
},
1702 { "siginfo", handle_qxfer_siginfo
},
1703 { "spu", handle_qxfer_spu
},
1704 { "statictrace", handle_qxfer_statictrace
},
1705 { "threads", handle_qxfer_threads
},
1706 { "traceframe-info", handle_qxfer_traceframe_info
},
1710 handle_qxfer (char *own_buf
, int packet_len
, int *new_packet_len_p
)
1718 if (!startswith (own_buf
, "qXfer:"))
1721 /* Grab the object, r/w and annex. */
1722 if (decode_xfer (own_buf
+ 6, &object
, &rw
, &annex
, &offset
) < 0)
1724 write_enn (own_buf
);
1729 i
< sizeof (qxfer_packets
) / sizeof (qxfer_packets
[0]);
1732 const struct qxfer
*q
= &qxfer_packets
[i
];
1734 if (strcmp (object
, q
->object
) == 0)
1736 if (strcmp (rw
, "read") == 0)
1738 unsigned char *data
;
1743 /* Grab the offset and length. */
1744 if (decode_xfer_read (offset
, &ofs
, &len
) < 0)
1746 write_enn (own_buf
);
1750 /* Read one extra byte, as an indicator of whether there is
1752 if (len
> PBUFSIZ
- 2)
1754 data
= malloc (len
+ 1);
1757 write_enn (own_buf
);
1760 n
= (*q
->xfer
) (annex
, data
, NULL
, ofs
, len
+ 1);
1768 /* Preserve error message. */
1771 write_enn (own_buf
);
1773 *new_packet_len_p
= write_qxfer_response (own_buf
, data
, len
, 1);
1775 *new_packet_len_p
= write_qxfer_response (own_buf
, data
, n
, 0);
1780 else if (strcmp (rw
, "write") == 0)
1785 unsigned char *data
;
1787 strcpy (own_buf
, "E00");
1788 data
= malloc (packet_len
- (offset
- own_buf
));
1791 write_enn (own_buf
);
1794 if (decode_xfer_write (offset
, packet_len
- (offset
- own_buf
),
1795 &ofs
, &len
, data
) < 0)
1798 write_enn (own_buf
);
1802 n
= (*q
->xfer
) (annex
, NULL
, data
, ofs
, len
);
1810 /* Preserve error message. */
1813 write_enn (own_buf
);
1815 sprintf (own_buf
, "%x", n
);
1828 /* Table used by the crc32 function to calcuate the checksum. */
1830 static unsigned int crc32_table
[256] =
1833 /* Compute 32 bit CRC from inferior memory.
1835 On success, return 32 bit CRC.
1836 On failure, return (unsigned long long) -1. */
1838 static unsigned long long
1839 crc32 (CORE_ADDR base
, int len
, unsigned int crc
)
1841 if (!crc32_table
[1])
1843 /* Initialize the CRC table and the decoding table. */
1847 for (i
= 0; i
< 256; i
++)
1849 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
1850 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
1857 unsigned char byte
= 0;
1859 /* Return failure if memory read fails. */
1860 if (read_inferior_memory (base
, &byte
, 1) != 0)
1861 return (unsigned long long) -1;
1863 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ byte
) & 255];
1866 return (unsigned long long) crc
;
1869 /* Add supported btrace packets to BUF. */
1872 supported_btrace_packets (char *buf
)
1874 if (target_supports_btrace (BTRACE_FORMAT_BTS
))
1876 strcat (buf
, ";Qbtrace:bts+");
1877 strcat (buf
, ";Qbtrace-conf:bts:size+");
1882 strcat (buf
, ";Qbtrace:off+");
1883 strcat (buf
, ";qXfer:btrace:read+");
1884 strcat (buf
, ";qXfer:btrace-conf:read+");
1887 /* Handle all of the extended 'q' packets. */
1890 handle_query (char *own_buf
, int packet_len
, int *new_packet_len_p
)
1892 static struct inferior_list_entry
*thread_ptr
;
1894 /* Reply the current thread id. */
1895 if (strcmp ("qC", own_buf
) == 0 && !disable_packet_qC
)
1898 require_running (own_buf
);
1900 if (!ptid_equal (general_thread
, null_ptid
)
1901 && !ptid_equal (general_thread
, minus_one_ptid
))
1902 gdb_id
= general_thread
;
1905 thread_ptr
= get_first_inferior (&all_threads
);
1906 gdb_id
= thread_to_gdb_id ((struct thread_info
*)thread_ptr
);
1909 sprintf (own_buf
, "QC");
1911 write_ptid (own_buf
, gdb_id
);
1915 if (strcmp ("qSymbol::", own_buf
) == 0)
1917 /* GDB is suggesting new symbols have been loaded. This may
1918 mean a new shared library has been detected as loaded, so
1919 take the opportunity to check if breakpoints we think are
1920 inserted, still are. Note that it isn't guaranteed that
1921 we'll see this when a shared library is loaded, and nor will
1922 we see this for unloads (although breakpoints in unloaded
1923 libraries shouldn't trigger), as GDB may not find symbols for
1924 the library at all. We also re-validate breakpoints when we
1925 see a second GDB breakpoint for the same address, and or when
1926 we access breakpoint shadows. */
1927 validate_breakpoints ();
1929 if (target_supports_tracepoints ())
1930 tracepoint_look_up_symbols ();
1932 if (target_running () && the_target
->look_up_symbols
!= NULL
)
1933 (*the_target
->look_up_symbols
) ();
1935 strcpy (own_buf
, "OK");
1939 if (!disable_packet_qfThreadInfo
)
1941 if (strcmp ("qfThreadInfo", own_buf
) == 0)
1945 require_running (own_buf
);
1946 thread_ptr
= get_first_inferior (&all_threads
);
1949 gdb_id
= thread_to_gdb_id ((struct thread_info
*)thread_ptr
);
1950 write_ptid (own_buf
, gdb_id
);
1951 thread_ptr
= thread_ptr
->next
;
1955 if (strcmp ("qsThreadInfo", own_buf
) == 0)
1959 require_running (own_buf
);
1960 if (thread_ptr
!= NULL
)
1963 gdb_id
= thread_to_gdb_id ((struct thread_info
*)thread_ptr
);
1964 write_ptid (own_buf
, gdb_id
);
1965 thread_ptr
= thread_ptr
->next
;
1970 sprintf (own_buf
, "l");
1976 if (the_target
->read_offsets
!= NULL
1977 && strcmp ("qOffsets", own_buf
) == 0)
1979 CORE_ADDR text
, data
;
1981 require_running (own_buf
);
1982 if (the_target
->read_offsets (&text
, &data
))
1983 sprintf (own_buf
, "Text=%lX;Data=%lX;Bss=%lX",
1984 (long)text
, (long)data
, (long)data
);
1986 write_enn (own_buf
);
1991 /* Protocol features query. */
1992 if (startswith (own_buf
, "qSupported")
1993 && (own_buf
[10] == ':' || own_buf
[10] == '\0'))
1995 char *p
= &own_buf
[10];
1996 int gdb_supports_qRelocInsn
= 0;
1998 /* Start processing qSupported packet. */
1999 target_process_qsupported (NULL
);
2001 /* Process each feature being provided by GDB. The first
2002 feature will follow a ':', and latter features will follow
2006 char **qsupported
= NULL
;
2010 /* Two passes, to avoid nested strtok calls in
2011 target_process_qsupported. */
2012 for (p
= strtok (p
+ 1, ";");
2014 p
= strtok (NULL
, ";"))
2017 qsupported
= xrealloc (qsupported
, count
* sizeof (char *));
2018 qsupported
[count
- 1] = xstrdup (p
);
2021 for (i
= 0; i
< count
; i
++)
2024 if (strcmp (p
, "multiprocess+") == 0)
2026 /* GDB supports and wants multi-process support if
2028 if (target_supports_multi_process ())
2031 else if (strcmp (p
, "qRelocInsn+") == 0)
2033 /* GDB supports relocate instruction requests. */
2034 gdb_supports_qRelocInsn
= 1;
2036 else if (strcmp (p
, "swbreak+") == 0)
2038 /* GDB wants us to report whether a trap is caused
2039 by a software breakpoint and for us to handle PC
2040 adjustment if necessary on this target. */
2041 if (target_supports_stopped_by_sw_breakpoint ())
2042 swbreak_feature
= 1;
2044 else if (strcmp (p
, "hwbreak+") == 0)
2046 /* GDB wants us to report whether a trap is caused
2047 by a hardware breakpoint. */
2048 if (target_supports_stopped_by_hw_breakpoint ())
2049 hwbreak_feature
= 1;
2051 else if (strcmp (p
, "fork-events+") == 0)
2053 /* GDB supports and wants fork events if possible. */
2054 if (target_supports_fork_events ())
2055 report_fork_events
= 1;
2057 else if (strcmp (p
, "vfork-events+") == 0)
2059 /* GDB supports and wants vfork events if possible. */
2060 if (target_supports_vfork_events ())
2061 report_vfork_events
= 1;
2064 target_process_qsupported (p
);
2073 "PacketSize=%x;QPassSignals+;QProgramSignals+",
2076 if (the_target
->qxfer_libraries_svr4
!= NULL
)
2077 strcat (own_buf
, ";qXfer:libraries-svr4:read+"
2078 ";augmented-libraries-svr4-read+");
2081 /* We do not have any hook to indicate whether the non-SVR4 target
2082 backend supports qXfer:libraries:read, so always report it. */
2083 strcat (own_buf
, ";qXfer:libraries:read+");
2086 if (the_target
->read_auxv
!= NULL
)
2087 strcat (own_buf
, ";qXfer:auxv:read+");
2089 if (the_target
->qxfer_spu
!= NULL
)
2090 strcat (own_buf
, ";qXfer:spu:read+;qXfer:spu:write+");
2092 if (the_target
->qxfer_siginfo
!= NULL
)
2093 strcat (own_buf
, ";qXfer:siginfo:read+;qXfer:siginfo:write+");
2095 if (the_target
->read_loadmap
!= NULL
)
2096 strcat (own_buf
, ";qXfer:fdpic:read+");
2098 /* We always report qXfer:features:read, as targets may
2099 install XML files on a subsequent call to arch_setup.
2100 If we reported to GDB on startup that we don't support
2101 qXfer:feature:read at all, we will never be re-queried. */
2102 strcat (own_buf
, ";qXfer:features:read+");
2104 if (transport_is_reliable
)
2105 strcat (own_buf
, ";QStartNoAckMode+");
2107 if (the_target
->qxfer_osdata
!= NULL
)
2108 strcat (own_buf
, ";qXfer:osdata:read+");
2110 if (target_supports_multi_process ())
2111 strcat (own_buf
, ";multiprocess+");
2113 if (target_supports_fork_events ())
2114 strcat (own_buf
, ";fork-events+");
2116 if (target_supports_vfork_events ())
2117 strcat (own_buf
, ";vfork-events+");
2119 if (target_supports_non_stop ())
2120 strcat (own_buf
, ";QNonStop+");
2122 if (target_supports_disable_randomization ())
2123 strcat (own_buf
, ";QDisableRandomization+");
2125 strcat (own_buf
, ";qXfer:threads:read+");
2127 if (target_supports_tracepoints ())
2129 strcat (own_buf
, ";ConditionalTracepoints+");
2130 strcat (own_buf
, ";TraceStateVariables+");
2131 strcat (own_buf
, ";TracepointSource+");
2132 strcat (own_buf
, ";DisconnectedTracing+");
2133 if (gdb_supports_qRelocInsn
&& target_supports_fast_tracepoints ())
2134 strcat (own_buf
, ";FastTracepoints+");
2135 strcat (own_buf
, ";StaticTracepoints+");
2136 strcat (own_buf
, ";InstallInTrace+");
2137 strcat (own_buf
, ";qXfer:statictrace:read+");
2138 strcat (own_buf
, ";qXfer:traceframe-info:read+");
2139 strcat (own_buf
, ";EnableDisableTracepoints+");
2140 strcat (own_buf
, ";QTBuffer:size+");
2141 strcat (own_buf
, ";tracenz+");
2144 /* Support target-side breakpoint conditions and commands. */
2145 if (target_supports_conditional_breakpoints ())
2146 strcat (own_buf
, ";ConditionalBreakpoints+");
2147 strcat (own_buf
, ";BreakpointCommands+");
2149 if (target_supports_agent ())
2150 strcat (own_buf
, ";QAgent+");
2152 supported_btrace_packets (own_buf
);
2154 if (target_supports_stopped_by_sw_breakpoint ())
2155 strcat (own_buf
, ";swbreak+");
2157 if (target_supports_stopped_by_hw_breakpoint ())
2158 strcat (own_buf
, ";hwbreak+");
2160 if (the_target
->pid_to_exec_file
!= NULL
)
2161 strcat (own_buf
, ";qXfer:exec-file:read+");
2166 /* Thread-local storage support. */
2167 if (the_target
->get_tls_address
!= NULL
2168 && startswith (own_buf
, "qGetTLSAddr:"))
2170 char *p
= own_buf
+ 12;
2171 CORE_ADDR parts
[2], address
= 0;
2173 ptid_t ptid
= null_ptid
;
2175 require_running (own_buf
);
2177 for (i
= 0; i
< 3; i
++)
2185 p2
= strchr (p
, ',');
2198 ptid
= read_ptid (p
, NULL
);
2200 decode_address (&parts
[i
- 1], p
, len
);
2204 if (p
!= NULL
|| i
< 3)
2208 struct thread_info
*thread
= find_thread_ptid (ptid
);
2213 err
= the_target
->get_tls_address (thread
, parts
[0], parts
[1],
2219 strcpy (own_buf
, paddress(address
));
2224 write_enn (own_buf
);
2228 /* Otherwise, pretend we do not understand this packet. */
2231 /* Windows OS Thread Information Block address support. */
2232 if (the_target
->get_tib_address
!= NULL
2233 && startswith (own_buf
, "qGetTIBAddr:"))
2238 ptid_t ptid
= read_ptid (own_buf
+ 12, &annex
);
2240 n
= (*the_target
->get_tib_address
) (ptid
, &tlb
);
2243 strcpy (own_buf
, paddress(tlb
));
2248 write_enn (own_buf
);
2254 /* Handle "monitor" commands. */
2255 if (startswith (own_buf
, "qRcmd,"))
2257 char *mon
= malloc (PBUFSIZ
);
2258 int len
= strlen (own_buf
+ 6);
2262 write_enn (own_buf
);
2267 || hex2bin (own_buf
+ 6, (gdb_byte
*) mon
, len
/ 2) != len
/ 2)
2269 write_enn (own_buf
);
2273 mon
[len
/ 2] = '\0';
2277 if (the_target
->handle_monitor_command
== NULL
2278 || (*the_target
->handle_monitor_command
) (mon
) == 0)
2279 /* Default processing. */
2280 handle_monitor_command (mon
, own_buf
);
2286 if (startswith (own_buf
, "qSearch:memory:"))
2288 require_running (own_buf
);
2289 handle_search_memory (own_buf
, packet_len
);
2293 if (strcmp (own_buf
, "qAttached") == 0
2294 || startswith (own_buf
, "qAttached:"))
2296 struct process_info
*process
;
2298 if (own_buf
[sizeof ("qAttached") - 1])
2300 int pid
= strtoul (own_buf
+ sizeof ("qAttached:") - 1, NULL
, 16);
2301 process
= (struct process_info
*)
2302 find_inferior_id (&all_processes
, pid_to_ptid (pid
));
2306 require_running (own_buf
);
2307 process
= current_process ();
2310 if (process
== NULL
)
2312 write_enn (own_buf
);
2316 strcpy (own_buf
, process
->attached
? "1" : "0");
2320 if (startswith (own_buf
, "qCRC:"))
2322 /* CRC check (compare-section). */
2326 unsigned long long crc
;
2328 require_running (own_buf
);
2329 comma
= unpack_varlen_hex (own_buf
+ 5, &base
);
2330 if (*comma
++ != ',')
2332 write_enn (own_buf
);
2335 len
= strtoul (comma
, NULL
, 16);
2336 crc
= crc32 (base
, len
, 0xffffffff);
2337 /* Check for memory failure. */
2338 if (crc
== (unsigned long long) -1)
2340 write_enn (own_buf
);
2343 sprintf (own_buf
, "C%lx", (unsigned long) crc
);
2347 if (handle_qxfer (own_buf
, packet_len
, new_packet_len_p
))
2350 if (target_supports_tracepoints () && handle_tracepoint_query (own_buf
))
2353 /* Otherwise we didn't know what packet it was. Say we didn't
2358 static void gdb_wants_all_threads_stopped (void);
2359 static void resume (struct thread_resume
*actions
, size_t n
);
2361 /* The callback that is passed to visit_actioned_threads. */
2362 typedef int (visit_actioned_threads_callback_ftype
)
2363 (const struct thread_resume
*, struct thread_info
*);
2365 /* Struct to pass data to visit_actioned_threads. */
2367 struct visit_actioned_threads_data
2369 const struct thread_resume
*actions
;
2371 visit_actioned_threads_callback_ftype
*callback
;
2374 /* Call CALLBACK for any thread to which ACTIONS applies to. Returns
2375 true if CALLBACK returns true. Returns false if no matching thread
2376 is found or CALLBACK results false.
2377 Note: This function is itself a callback for find_inferior. */
2380 visit_actioned_threads (struct inferior_list_entry
*entry
, void *datap
)
2382 struct visit_actioned_threads_data
*data
= datap
;
2383 const struct thread_resume
*actions
= data
->actions
;
2384 size_t num_actions
= data
->num_actions
;
2385 visit_actioned_threads_callback_ftype
*callback
= data
->callback
;
2388 for (i
= 0; i
< num_actions
; i
++)
2390 const struct thread_resume
*action
= &actions
[i
];
2392 if (ptid_equal (action
->thread
, minus_one_ptid
)
2393 || ptid_equal (action
->thread
, entry
->id
)
2394 || ((ptid_get_pid (action
->thread
)
2395 == ptid_get_pid (entry
->id
))
2396 && ptid_get_lwp (action
->thread
) == -1))
2398 struct thread_info
*thread
= (struct thread_info
*) entry
;
2400 if ((*callback
) (action
, thread
))
2408 /* Callback for visit_actioned_threads. If the thread has a pending
2409 status to report, report it now. */
2412 handle_pending_status (const struct thread_resume
*resumption
,
2413 struct thread_info
*thread
)
2415 if (thread
->status_pending_p
)
2417 thread
->status_pending_p
= 0;
2419 last_status
= thread
->last_status
;
2420 last_ptid
= thread
->entry
.id
;
2421 prepare_resume_reply (own_buf
, last_ptid
, &last_status
);
2427 /* Parse vCont packets. */
2429 handle_v_cont (char *own_buf
)
2433 struct thread_resume
*resume_info
;
2434 struct thread_resume default_action
= {{0}};
2436 /* Count the number of semicolons in the packet. There should be one
2437 for every action. */
2443 p
= strchr (p
, ';');
2446 resume_info
= malloc (n
* sizeof (resume_info
[0]));
2447 if (resume_info
== NULL
)
2455 memset (&resume_info
[i
], 0, sizeof resume_info
[i
]);
2457 if (p
[0] == 's' || p
[0] == 'S')
2458 resume_info
[i
].kind
= resume_step
;
2459 else if (p
[0] == 'r')
2460 resume_info
[i
].kind
= resume_step
;
2461 else if (p
[0] == 'c' || p
[0] == 'C')
2462 resume_info
[i
].kind
= resume_continue
;
2463 else if (p
[0] == 't')
2464 resume_info
[i
].kind
= resume_stop
;
2468 if (p
[0] == 'S' || p
[0] == 'C')
2471 sig
= strtol (p
+ 1, &q
, 16);
2476 if (!gdb_signal_to_host_p (sig
))
2478 resume_info
[i
].sig
= gdb_signal_to_host (sig
);
2480 else if (p
[0] == 'r')
2484 p
= unpack_varlen_hex (p
+ 1, &addr
);
2485 resume_info
[i
].step_range_start
= addr
;
2490 p
= unpack_varlen_hex (p
+ 1, &addr
);
2491 resume_info
[i
].step_range_end
= addr
;
2500 resume_info
[i
].thread
= minus_one_ptid
;
2501 default_action
= resume_info
[i
];
2503 /* Note: we don't increment i here, we'll overwrite this entry
2504 the next time through. */
2506 else if (p
[0] == ':')
2508 ptid_t ptid
= read_ptid (p
+ 1, &q
);
2513 if (p
[0] != ';' && p
[0] != 0)
2516 resume_info
[i
].thread
= ptid
;
2523 resume_info
[i
] = default_action
;
2525 set_desired_thread (0);
2527 resume (resume_info
, n
);
2532 write_enn (own_buf
);
2537 /* Resume target with ACTIONS, an array of NUM_ACTIONS elements. */
2540 resume (struct thread_resume
*actions
, size_t num_actions
)
2544 /* Check if among the threads that GDB wants actioned, there's
2545 one with a pending status to report. If so, skip actually
2546 resuming/stopping and report the pending event
2548 struct visit_actioned_threads_data data
;
2550 data
.actions
= actions
;
2551 data
.num_actions
= num_actions
;
2552 data
.callback
= handle_pending_status
;
2553 if (find_inferior (&all_threads
, visit_actioned_threads
, &data
) != NULL
)
2559 (*the_target
->resume
) (actions
, num_actions
);
2565 last_ptid
= mywait (minus_one_ptid
, &last_status
, 0, 1);
2567 if (last_status
.kind
== TARGET_WAITKIND_NO_RESUMED
)
2569 /* No proper RSP support for this yet. At least return
2571 sprintf (own_buf
, "E.No unwaited-for children left.");
2572 disable_async_io ();
2576 if (last_status
.kind
!= TARGET_WAITKIND_EXITED
2577 && last_status
.kind
!= TARGET_WAITKIND_SIGNALLED
2578 && last_status
.kind
!= TARGET_WAITKIND_NO_RESUMED
)
2579 current_thread
->last_status
= last_status
;
2581 /* From the client's perspective, all-stop mode always stops all
2582 threads implicitly (and the target backend has already done
2583 so by now). Tag all threads as "want-stopped", so we don't
2584 resume them implicitly without the client telling us to. */
2585 gdb_wants_all_threads_stopped ();
2586 prepare_resume_reply (own_buf
, last_ptid
, &last_status
);
2587 disable_async_io ();
2589 if (last_status
.kind
== TARGET_WAITKIND_EXITED
2590 || last_status
.kind
== TARGET_WAITKIND_SIGNALLED
)
2591 mourn_inferior (find_process_pid (ptid_get_pid (last_ptid
)));
2595 /* Attach to a new program. Return 1 if successful, 0 if failure. */
2597 handle_v_attach (char *own_buf
)
2601 pid
= strtol (own_buf
+ 8, NULL
, 16);
2602 if (pid
!= 0 && attach_inferior (pid
) == 0)
2604 /* Don't report shared library events after attaching, even if
2605 some libraries are preloaded. GDB will always poll the
2606 library list. Avoids the "stopped by shared library event"
2607 notice on the GDB side. */
2612 /* In non-stop, we don't send a resume reply. Stop events
2613 will follow up using the normal notification
2618 prepare_resume_reply (own_buf
, last_ptid
, &last_status
);
2624 write_enn (own_buf
);
2629 /* Run a new program. Return 1 if successful, 0 if failure. */
2631 handle_v_run (char *own_buf
)
2633 char *p
, *next_p
, **new_argv
;
2637 for (p
= own_buf
+ strlen ("vRun;"); p
&& *p
; p
= strchr (p
, ';'))
2643 new_argv
= calloc (new_argc
+ 2, sizeof (char *));
2644 if (new_argv
== NULL
)
2646 write_enn (own_buf
);
2651 for (p
= own_buf
+ strlen ("vRun;"); *p
; p
= next_p
)
2653 next_p
= strchr (p
, ';');
2655 next_p
= p
+ strlen (p
);
2657 if (i
== 0 && p
== next_p
)
2661 /* FIXME: Fail request if out of memory instead of dying. */
2662 new_argv
[i
] = xmalloc (1 + (next_p
- p
) / 2);
2663 hex2bin (p
, (gdb_byte
*) new_argv
[i
], (next_p
- p
) / 2);
2664 new_argv
[i
][(next_p
- p
) / 2] = '\0';
2673 if (new_argv
[0] == NULL
)
2675 /* GDB didn't specify a program to run. Use the program from the
2676 last run with the new argument list. */
2678 if (program_argv
== NULL
)
2680 write_enn (own_buf
);
2681 freeargv (new_argv
);
2685 new_argv
[0] = strdup (program_argv
[0]);
2686 if (new_argv
[0] == NULL
)
2688 write_enn (own_buf
);
2689 freeargv (new_argv
);
2694 /* Free the old argv and install the new one. */
2695 freeargv (program_argv
);
2696 program_argv
= new_argv
;
2698 start_inferior (program_argv
);
2699 if (last_status
.kind
== TARGET_WAITKIND_STOPPED
)
2701 prepare_resume_reply (own_buf
, last_ptid
, &last_status
);
2703 /* In non-stop, sending a resume reply doesn't set the general
2704 thread, but GDB assumes a vRun sets it (this is so GDB can
2705 query which is the main thread of the new inferior. */
2707 general_thread
= last_ptid
;
2713 write_enn (own_buf
);
2718 /* Kill process. Return 1 if successful, 0 if failure. */
2720 handle_v_kill (char *own_buf
)
2723 char *p
= &own_buf
[6];
2725 pid
= strtol (p
, NULL
, 16);
2728 if (pid
!= 0 && kill_inferior (pid
) == 0)
2730 last_status
.kind
= TARGET_WAITKIND_SIGNALLED
;
2731 last_status
.value
.sig
= GDB_SIGNAL_KILL
;
2732 last_ptid
= pid_to_ptid (pid
);
2733 discard_queued_stop_replies (pid
);
2739 write_enn (own_buf
);
2744 /* Handle all of the extended 'v' packets. */
2746 handle_v_requests (char *own_buf
, int packet_len
, int *new_packet_len
)
2748 if (!disable_packet_vCont
)
2750 if (startswith (own_buf
, "vCont;"))
2752 require_running (own_buf
);
2753 handle_v_cont (own_buf
);
2757 if (startswith (own_buf
, "vCont?"))
2759 strcpy (own_buf
, "vCont;c;C;s;S;t");
2760 if (target_supports_range_stepping ())
2762 own_buf
= own_buf
+ strlen (own_buf
);
2763 strcpy (own_buf
, ";r");
2769 if (startswith (own_buf
, "vFile:")
2770 && handle_vFile (own_buf
, packet_len
, new_packet_len
))
2773 if (startswith (own_buf
, "vAttach;"))
2775 if ((!extended_protocol
|| !multi_process
) && target_running ())
2777 fprintf (stderr
, "Already debugging a process\n");
2778 write_enn (own_buf
);
2781 handle_v_attach (own_buf
);
2785 if (startswith (own_buf
, "vRun;"))
2787 if ((!extended_protocol
|| !multi_process
) && target_running ())
2789 fprintf (stderr
, "Already debugging a process\n");
2790 write_enn (own_buf
);
2793 handle_v_run (own_buf
);
2797 if (startswith (own_buf
, "vKill;"))
2799 if (!target_running ())
2801 fprintf (stderr
, "No process to kill\n");
2802 write_enn (own_buf
);
2805 handle_v_kill (own_buf
);
2809 if (handle_notif_ack (own_buf
, packet_len
))
2812 /* Otherwise we didn't know what packet it was. Say we didn't
2818 /* Resume thread and wait for another event. In non-stop mode,
2819 don't really wait here, but return immediatelly to the event
2822 myresume (char *own_buf
, int step
, int sig
)
2824 struct thread_resume resume_info
[2];
2826 int valid_cont_thread
;
2828 set_desired_thread (0);
2830 valid_cont_thread
= (!ptid_equal (cont_thread
, null_ptid
)
2831 && !ptid_equal (cont_thread
, minus_one_ptid
));
2833 if (step
|| sig
|| valid_cont_thread
)
2835 resume_info
[0].thread
= current_ptid
;
2837 resume_info
[0].kind
= resume_step
;
2839 resume_info
[0].kind
= resume_continue
;
2840 resume_info
[0].sig
= sig
;
2844 if (!valid_cont_thread
)
2846 resume_info
[n
].thread
= minus_one_ptid
;
2847 resume_info
[n
].kind
= resume_continue
;
2848 resume_info
[n
].sig
= 0;
2852 resume (resume_info
, n
);
2855 /* Callback for for_each_inferior. Make a new stop reply for each
2859 queue_stop_reply_callback (struct inferior_list_entry
*entry
, void *arg
)
2861 struct thread_info
*thread
= (struct thread_info
*) entry
;
2863 /* For now, assume targets that don't have this callback also don't
2864 manage the thread's last_status field. */
2865 if (the_target
->thread_stopped
== NULL
)
2867 struct vstop_notif
*new_notif
= xmalloc (sizeof (*new_notif
));
2869 new_notif
->ptid
= entry
->id
;
2870 new_notif
->status
= thread
->last_status
;
2871 /* Pass the last stop reply back to GDB, but don't notify
2873 notif_event_enque (¬if_stop
,
2874 (struct notif_event
*) new_notif
);
2878 if (thread_stopped (thread
))
2883 = target_waitstatus_to_string (&thread
->last_status
);
2885 debug_printf ("Reporting thread %s as already stopped with %s\n",
2886 target_pid_to_str (entry
->id
),
2889 xfree (status_string
);
2892 gdb_assert (thread
->last_status
.kind
!= TARGET_WAITKIND_IGNORE
);
2894 /* Pass the last stop reply back to GDB, but don't notify
2896 queue_stop_reply (entry
->id
, &thread
->last_status
);
2903 /* Set this inferior threads's state as "want-stopped". We won't
2904 resume this thread until the client gives us another action for
2908 gdb_wants_thread_stopped (struct inferior_list_entry
*entry
)
2910 struct thread_info
*thread
= (struct thread_info
*) entry
;
2912 thread
->last_resume_kind
= resume_stop
;
2914 if (thread
->last_status
.kind
== TARGET_WAITKIND_IGNORE
)
2916 /* Most threads are stopped implicitly (all-stop); tag that with
2918 thread
->last_status
.kind
= TARGET_WAITKIND_STOPPED
;
2919 thread
->last_status
.value
.sig
= GDB_SIGNAL_0
;
2923 /* Set all threads' states as "want-stopped". */
2926 gdb_wants_all_threads_stopped (void)
2928 for_each_inferior (&all_threads
, gdb_wants_thread_stopped
);
2931 /* Clear the gdb_detached flag of every process. */
2934 gdb_reattached_process (struct inferior_list_entry
*entry
)
2936 struct process_info
*process
= (struct process_info
*) entry
;
2938 process
->gdb_detached
= 0;
2941 /* Callback for for_each_inferior. Clear the thread's pending status
2945 clear_pending_status_callback (struct inferior_list_entry
*entry
)
2947 struct thread_info
*thread
= (struct thread_info
*) entry
;
2949 thread
->status_pending_p
= 0;
2952 /* Callback for for_each_inferior. If the thread is stopped with an
2953 interesting event, mark it as having a pending event. */
2956 set_pending_status_callback (struct inferior_list_entry
*entry
)
2958 struct thread_info
*thread
= (struct thread_info
*) entry
;
2960 if (thread
->last_status
.kind
!= TARGET_WAITKIND_STOPPED
2961 || (thread
->last_status
.value
.sig
!= GDB_SIGNAL_0
2962 /* A breakpoint, watchpoint or finished step from a previous
2963 GDB run isn't considered interesting for a new GDB run.
2964 If we left those pending, the new GDB could consider them
2965 random SIGTRAPs. This leaves out real async traps. We'd
2966 have to peek into the (target-specific) siginfo to
2967 distinguish those. */
2968 && thread
->last_status
.value
.sig
!= GDB_SIGNAL_TRAP
))
2969 thread
->status_pending_p
= 1;
2972 /* Callback for find_inferior. Return true if ENTRY (a thread) has a
2973 pending status to report to GDB. */
2976 find_status_pending_thread_callback (struct inferior_list_entry
*entry
, void *data
)
2978 struct thread_info
*thread
= (struct thread_info
*) entry
;
2980 return thread
->status_pending_p
;
2983 /* Status handler for the '?' packet. */
2986 handle_status (char *own_buf
)
2988 /* GDB is connected, don't forward events to the target anymore. */
2989 for_each_inferior (&all_processes
, gdb_reattached_process
);
2991 /* In non-stop mode, we must send a stop reply for each stopped
2992 thread. In all-stop mode, just send one for the first stopped
2997 find_inferior (&all_threads
, queue_stop_reply_callback
, NULL
);
2999 /* The first is sent immediatly. OK is sent if there is no
3000 stopped thread, which is the same handling of the vStopped
3001 packet (by design). */
3002 notif_write_event (¬if_stop
, own_buf
);
3006 struct inferior_list_entry
*thread
= NULL
;
3009 stabilize_threads ();
3010 gdb_wants_all_threads_stopped ();
3012 /* We can only report one status, but we might be coming out of
3013 non-stop -- if more than one thread is stopped with
3014 interesting events, leave events for the threads we're not
3015 reporting now pending. They'll be reported the next time the
3016 threads are resumed. Start by marking all interesting events
3018 for_each_inferior (&all_threads
, set_pending_status_callback
);
3020 /* Prefer the last thread that reported an event to GDB (even if
3021 that was a GDB_SIGNAL_TRAP). */
3022 if (last_status
.kind
!= TARGET_WAITKIND_IGNORE
3023 && last_status
.kind
!= TARGET_WAITKIND_EXITED
3024 && last_status
.kind
!= TARGET_WAITKIND_SIGNALLED
)
3025 thread
= find_inferior_id (&all_threads
, last_ptid
);
3027 /* If the last event thread is not found for some reason, look
3028 for some other thread that might have an event to report. */
3030 thread
= find_inferior (&all_threads
,
3031 find_status_pending_thread_callback
, NULL
);
3033 /* If we're still out of luck, simply pick the first thread in
3036 thread
= get_first_inferior (&all_threads
);
3040 struct thread_info
*tp
= (struct thread_info
*) thread
;
3042 /* We're reporting this event, so it's no longer
3044 tp
->status_pending_p
= 0;
3046 /* GDB assumes the current thread is the thread we're
3047 reporting the status for. */
3048 general_thread
= thread
->id
;
3049 set_desired_thread (1);
3051 gdb_assert (tp
->last_status
.kind
!= TARGET_WAITKIND_IGNORE
);
3052 prepare_resume_reply (own_buf
, tp
->entry
.id
, &tp
->last_status
);
3055 strcpy (own_buf
, "W00");
3060 gdbserver_version (void)
3062 printf ("GNU gdbserver %s%s\n"
3063 "Copyright (C) 2015 Free Software Foundation, Inc.\n"
3064 "gdbserver is free software, covered by the "
3065 "GNU General Public License.\n"
3066 "This gdbserver was configured as \"%s\"\n",
3067 PKGVERSION
, version
, host_name
);
3071 gdbserver_usage (FILE *stream
)
3073 fprintf (stream
, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n"
3074 "\tgdbserver [OPTIONS] --attach COMM PID\n"
3075 "\tgdbserver [OPTIONS] --multi COMM\n"
3077 "COMM may either be a tty device (for serial debugging),\n"
3078 "HOST:PORT to listen for a TCP connection, or '-' or 'stdio' to use \n"
3079 "stdin/stdout of gdbserver.\n"
3080 "PROG is the executable program. ARGS are arguments passed to inferior.\n"
3081 "PID is the process ID to attach to, when --attach is specified.\n"
3083 "Operating modes:\n"
3085 " --attach Attach to running process PID.\n"
3086 " --multi Start server without a specific program, and\n"
3087 " only quit when explicitly commanded.\n"
3088 " --once Exit after the first connection has closed.\n"
3089 " --help Print this message and then exit.\n"
3090 " --version Display version information and exit.\n"
3094 " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n"
3095 " --disable-randomization\n"
3096 " Run PROG with address space randomization disabled.\n"
3097 " --no-disable-randomization\n"
3098 " Don't disable address space randomization when\n"
3103 " --debug Enable general debugging output.\n"
3104 " --debug-format=opt1[,opt2,...]\n"
3105 " Specify extra content in debugging output.\n"
3110 " --remote-debug Enable remote protocol debugging output.\n"
3111 " --disable-packet=opt1[,opt2,...]\n"
3112 " Disable support for RSP packets or features.\n"
3114 " vCont, Tthread, qC, qfThreadInfo and \n"
3115 " threads (disable all threading packets).\n"
3117 "For more information, consult the GDB manual (available as on-line \n"
3118 "info or a printed manual).\n");
3119 if (REPORT_BUGS_TO
[0] && stream
== stdout
)
3120 fprintf (stream
, "Report bugs to \"%s\".\n", REPORT_BUGS_TO
);
3124 gdbserver_show_disableable (FILE *stream
)
3126 fprintf (stream
, "Disableable packets:\n"
3127 " vCont \tAll vCont packets\n"
3128 " qC \tQuerying the current thread\n"
3129 " qfThreadInfo\tThread listing\n"
3130 " Tthread \tPassing the thread specifier in the "
3131 "T stop reply packet\n"
3132 " threads \tAll of the above\n");
3136 #undef require_running
3137 #define require_running(BUF) \
3138 if (!target_running ()) \
3145 first_thread_of (struct inferior_list_entry
*entry
, void *args
)
3147 int pid
= * (int *) args
;
3149 if (ptid_get_pid (entry
->id
) == pid
)
3156 kill_inferior_callback (struct inferior_list_entry
*entry
)
3158 struct process_info
*process
= (struct process_info
*) entry
;
3159 int pid
= ptid_get_pid (process
->entry
.id
);
3161 kill_inferior (pid
);
3162 discard_queued_stop_replies (pid
);
3165 /* Callback for for_each_inferior to detach or kill the inferior,
3166 depending on whether we attached to it or not.
3167 We inform the user whether we're detaching or killing the process
3168 as this is only called when gdbserver is about to exit. */
3171 detach_or_kill_inferior_callback (struct inferior_list_entry
*entry
)
3173 struct process_info
*process
= (struct process_info
*) entry
;
3174 int pid
= ptid_get_pid (process
->entry
.id
);
3176 if (process
->attached
)
3177 detach_inferior (pid
);
3179 kill_inferior (pid
);
3181 discard_queued_stop_replies (pid
);
3184 /* for_each_inferior callback for detach_or_kill_for_exit to print
3185 the pids of started inferiors. */
3188 print_started_pid (struct inferior_list_entry
*entry
)
3190 struct process_info
*process
= (struct process_info
*) entry
;
3192 if (! process
->attached
)
3194 int pid
= ptid_get_pid (process
->entry
.id
);
3195 fprintf (stderr
, " %d", pid
);
3199 /* for_each_inferior callback for detach_or_kill_for_exit to print
3200 the pids of attached inferiors. */
3203 print_attached_pid (struct inferior_list_entry
*entry
)
3205 struct process_info
*process
= (struct process_info
*) entry
;
3207 if (process
->attached
)
3209 int pid
= ptid_get_pid (process
->entry
.id
);
3210 fprintf (stderr
, " %d", pid
);
3214 /* Call this when exiting gdbserver with possible inferiors that need
3215 to be killed or detached from. */
3218 detach_or_kill_for_exit (void)
3220 /* First print a list of the inferiors we will be killing/detaching.
3221 This is to assist the user, for example, in case the inferior unexpectedly
3222 dies after we exit: did we screw up or did the inferior exit on its own?
3223 Having this info will save some head-scratching. */
3225 if (have_started_inferiors_p ())
3227 fprintf (stderr
, "Killing process(es):");
3228 for_each_inferior (&all_processes
, print_started_pid
);
3229 fprintf (stderr
, "\n");
3231 if (have_attached_inferiors_p ())
3233 fprintf (stderr
, "Detaching process(es):");
3234 for_each_inferior (&all_processes
, print_attached_pid
);
3235 fprintf (stderr
, "\n");
3238 /* Now we can kill or detach the inferiors. */
3240 for_each_inferior (&all_processes
, detach_or_kill_inferior_callback
);
3243 /* Value that will be passed to exit(3) when gdbserver exits. */
3244 static int exit_code
;
3246 /* Cleanup version of detach_or_kill_for_exit. */
3249 detach_or_kill_for_exit_cleanup (void *ignore
)
3254 detach_or_kill_for_exit ();
3257 CATCH (exception
, RETURN_MASK_ALL
)
3260 fprintf (stderr
, "Detach or kill failed: %s\n", exception
.message
);
3266 /* Main function. This is called by the real "main" function,
3267 wrapped in a TRY_CATCH that handles any uncaught exceptions. */
3269 static void ATTRIBUTE_NORETURN
3270 captured_main (int argc
, char *argv
[])
3274 char *arg_end
, *port
;
3275 char **next_arg
= &argv
[1];
3276 volatile int multi_mode
= 0;
3277 volatile int attach
= 0;
3280 while (*next_arg
!= NULL
&& **next_arg
== '-')
3282 if (strcmp (*next_arg
, "--version") == 0)
3284 gdbserver_version ();
3287 else if (strcmp (*next_arg
, "--help") == 0)
3289 gdbserver_usage (stdout
);
3292 else if (strcmp (*next_arg
, "--attach") == 0)
3294 else if (strcmp (*next_arg
, "--multi") == 0)
3296 else if (strcmp (*next_arg
, "--wrapper") == 0)
3300 wrapper_argv
= next_arg
;
3301 while (*next_arg
!= NULL
&& strcmp (*next_arg
, "--") != 0)
3304 if (next_arg
== wrapper_argv
|| *next_arg
== NULL
)
3306 gdbserver_usage (stderr
);
3310 /* Consume the "--". */
3313 else if (strcmp (*next_arg
, "--debug") == 0)
3315 else if (startswith (*next_arg
, "--debug-format="))
3318 = parse_debug_format_options ((*next_arg
)
3319 + sizeof ("--debug-format=") - 1, 0);
3321 if (error_msg
!= NULL
)
3323 fprintf (stderr
, "%s", error_msg
);
3327 else if (strcmp (*next_arg
, "--remote-debug") == 0)
3329 else if (strcmp (*next_arg
, "--disable-packet") == 0)
3331 gdbserver_show_disableable (stdout
);
3334 else if (startswith (*next_arg
, "--disable-packet="))
3336 char *packets
, *tok
;
3338 packets
= *next_arg
+= sizeof ("--disable-packet=") - 1;
3339 for (tok
= strtok (packets
, ",");
3341 tok
= strtok (NULL
, ","))
3343 if (strcmp ("vCont", tok
) == 0)
3344 disable_packet_vCont
= 1;
3345 else if (strcmp ("Tthread", tok
) == 0)
3346 disable_packet_Tthread
= 1;
3347 else if (strcmp ("qC", tok
) == 0)
3348 disable_packet_qC
= 1;
3349 else if (strcmp ("qfThreadInfo", tok
) == 0)
3350 disable_packet_qfThreadInfo
= 1;
3351 else if (strcmp ("threads", tok
) == 0)
3353 disable_packet_vCont
= 1;
3354 disable_packet_Tthread
= 1;
3355 disable_packet_qC
= 1;
3356 disable_packet_qfThreadInfo
= 1;
3360 fprintf (stderr
, "Don't know how to disable \"%s\".\n\n",
3362 gdbserver_show_disableable (stderr
);
3367 else if (strcmp (*next_arg
, "-") == 0)
3369 /* "-" specifies a stdio connection and is a form of port
3371 *next_arg
= STDIO_CONNECTION_NAME
;
3374 else if (strcmp (*next_arg
, "--disable-randomization") == 0)
3375 disable_randomization
= 1;
3376 else if (strcmp (*next_arg
, "--no-disable-randomization") == 0)
3377 disable_randomization
= 0;
3378 else if (strcmp (*next_arg
, "--once") == 0)
3382 fprintf (stderr
, "Unknown argument: %s\n", *next_arg
);
3392 if (port
== NULL
|| (!attach
&& !multi_mode
&& *next_arg
== NULL
))
3394 gdbserver_usage (stderr
);
3398 /* Remember stdio descriptors. LISTEN_DESC must not be listed, it will be
3399 opened by remote_prepare. */
3402 /* We need to know whether the remote connection is stdio before
3403 starting the inferior. Inferiors created in this scenario have
3404 stdin,stdout redirected. So do this here before we call
3406 remote_prepare (port
);
3411 /* --attach used to come after PORT, so allow it there for
3413 if (*next_arg
!= NULL
&& strcmp (*next_arg
, "--attach") == 0)
3420 && (*next_arg
== NULL
3421 || (*next_arg
)[0] == '\0'
3422 || (pid
= strtoul (*next_arg
, &arg_end
, 0)) == 0
3424 || next_arg
[1] != NULL
))
3429 gdbserver_usage (stderr
);
3433 initialize_async_io ();
3435 initialize_event_loop ();
3436 if (target_supports_tracepoints ())
3437 initialize_tracepoint ();
3439 own_buf
= xmalloc (PBUFSIZ
+ 1);
3440 mem_buf
= xmalloc (PBUFSIZ
);
3442 if (pid
== 0 && *next_arg
!= NULL
)
3446 n
= argc
- (next_arg
- argv
);
3447 program_argv
= xmalloc (sizeof (char *) * (n
+ 1));
3448 for (i
= 0; i
< n
; i
++)
3449 program_argv
[i
] = xstrdup (next_arg
[i
]);
3450 program_argv
[i
] = NULL
;
3452 /* Wait till we are at first instruction in program. */
3453 start_inferior (program_argv
);
3455 /* We are now (hopefully) stopped at the first instruction of
3456 the target process. This assumes that the target process was
3457 successfully created. */
3461 if (attach_inferior (pid
) == -1)
3462 error ("Attaching not supported on this target");
3464 /* Otherwise succeeded. */
3468 last_status
.kind
= TARGET_WAITKIND_EXITED
;
3469 last_status
.value
.integer
= 0;
3470 last_ptid
= minus_one_ptid
;
3472 make_cleanup (detach_or_kill_for_exit_cleanup
, NULL
);
3474 initialize_notif ();
3476 /* Don't report shared library events on the initial connection,
3477 even if some libraries are preloaded. Avoids the "stopped by
3478 shared library event" notice on gdb side. */
3481 if (last_status
.kind
== TARGET_WAITKIND_EXITED
3482 || last_status
.kind
== TARGET_WAITKIND_SIGNALLED
)
3487 if (!was_running
&& !multi_mode
)
3488 error ("No program to debug");
3495 report_fork_events
= 0;
3496 report_vfork_events
= 0;
3497 /* Be sure we're out of tfind mode. */
3498 current_traceframe
= -1;
3499 cont_thread
= null_ptid
;
3500 swbreak_feature
= 0;
3501 hwbreak_feature
= 0;
3507 /* Wait for events. This will return when all event sources
3508 are removed from the event loop. */
3509 start_event_loop ();
3511 /* If an exit was requested (using the "monitor exit"
3512 command), terminate now. The only other way to get
3513 here is for getpkt to fail; close the connection
3514 and reopen it at the top of the loop. */
3516 if (exit_requested
|| run_once
)
3517 throw_quit ("Quit");
3520 "Remote side has terminated connection. "
3521 "GDBserver will reopen the connection.\n");
3523 /* Get rid of any pending statuses. An eventual reconnection
3524 (by the same GDB instance or another) will refresh all its
3525 state from scratch. */
3526 discard_queued_stop_replies (-1);
3527 for_each_inferior (&all_threads
,
3528 clear_pending_status_callback
);
3532 if (disconnected_tracing
)
3534 /* Try to enable non-stop/async mode, so we we can
3535 both wait for an async socket accept, and handle
3536 async target events simultaneously. There's also
3537 no point either in having the target always stop
3538 all threads, when we're going to pass signals
3539 down without informing GDB. */
3542 if (start_non_stop (1))
3545 /* Detaching implicitly resumes all threads;
3546 simply disconnecting does not. */
3552 "Disconnected tracing disabled; "
3553 "stopping trace run.\n");
3558 CATCH (exception
, RETURN_MASK_ERROR
)
3560 if (response_needed
)
3562 write_enn (own_buf
);
3570 /* Main function. */
3573 main (int argc
, char *argv
[])
3578 captured_main (argc
, argv
);
3580 CATCH (exception
, RETURN_MASK_ALL
)
3582 if (exception
.reason
== RETURN_ERROR
)
3585 fprintf (stderr
, "%s\n", exception
.message
);
3586 fprintf (stderr
, "Exiting\n");
3594 gdb_assert_not_reached ("captured_main should never return");
3597 /* Skip PACKET until the next semi-colon (or end of string). */
3600 skip_to_semicolon (char **packet
)
3602 while (**packet
!= '\0' && **packet
!= ';')
3606 /* Process options coming from Z packets for a breakpoint. PACKET is
3607 the packet buffer. *PACKET is updated to point to the first char
3608 after the last processed option. */
3611 process_point_options (struct breakpoint
*bp
, char **packet
)
3613 char *dataptr
= *packet
;
3616 /* Check if data has the correct format. */
3617 if (*dataptr
!= ';')
3624 if (*dataptr
== ';')
3627 if (*dataptr
== 'X')
3629 /* Conditional expression. */
3631 debug_printf ("Found breakpoint condition.\n");
3632 if (!add_breakpoint_condition (bp
, &dataptr
))
3633 skip_to_semicolon (&dataptr
);
3635 else if (startswith (dataptr
, "cmds:"))
3637 dataptr
+= strlen ("cmds:");
3639 debug_printf ("Found breakpoint commands %s.\n", dataptr
);
3640 persist
= (*dataptr
== '1');
3642 if (add_breakpoint_commands (bp
, &dataptr
, persist
))
3643 skip_to_semicolon (&dataptr
);
3647 fprintf (stderr
, "Unknown token %c, ignoring.\n",
3649 /* Skip tokens until we find one that we recognize. */
3650 skip_to_semicolon (&dataptr
);
3656 /* Event loop callback that handles a serial event. The first byte in
3657 the serial buffer gets us here. We expect characters to arrive at
3658 a brisk pace, so we read the rest of the packet with a blocking
3662 process_serial_event (void)
3673 int new_packet_len
= -1;
3675 /* Used to decide when gdbserver should exit in
3676 multi-mode/remote. */
3677 static int have_ran
= 0;
3680 have_ran
= target_running ();
3682 disable_async_io ();
3684 response_needed
= 0;
3685 packet_len
= getpkt (own_buf
);
3686 if (packet_len
<= 0)
3689 /* Force an event loop break. */
3692 response_needed
= 1;
3699 handle_query (own_buf
, packet_len
, &new_packet_len
);
3702 handle_general_set (own_buf
);
3705 require_running (own_buf
);
3710 pid
= strtol (&own_buf
[i
], NULL
, 16);
3713 pid
= ptid_get_pid (current_ptid
);
3715 if ((tracing
&& disconnected_tracing
) || any_persistent_commands ())
3717 struct thread_resume resume_info
;
3718 struct process_info
*process
= find_process_pid (pid
);
3720 if (process
== NULL
)
3722 write_enn (own_buf
);
3726 if (tracing
&& disconnected_tracing
)
3728 "Disconnected tracing in effect, "
3729 "leaving gdbserver attached to the process\n");
3731 if (any_persistent_commands ())
3733 "Persistent commands are present, "
3734 "leaving gdbserver attached to the process\n");
3736 /* Make sure we're in non-stop/async mode, so we we can both
3737 wait for an async socket accept, and handle async target
3738 events simultaneously. There's also no point either in
3739 having the target stop all threads, when we're going to
3740 pass signals down without informing GDB. */
3744 debug_printf ("Forcing non-stop mode\n");
3750 process
->gdb_detached
= 1;
3752 /* Detaching implicitly resumes all threads. */
3753 resume_info
.thread
= minus_one_ptid
;
3754 resume_info
.kind
= resume_continue
;
3755 resume_info
.sig
= 0;
3756 (*the_target
->resume
) (&resume_info
, 1);
3759 break; /* from switch/case */
3762 fprintf (stderr
, "Detaching from process %d\n", pid
);
3764 if (detach_inferior (pid
) != 0)
3765 write_enn (own_buf
);
3768 discard_queued_stop_replies (pid
);
3771 if (extended_protocol
)
3773 /* Treat this like a normal program exit. */
3774 last_status
.kind
= TARGET_WAITKIND_EXITED
;
3775 last_status
.value
.integer
= 0;
3776 last_ptid
= pid_to_ptid (pid
);
3778 current_thread
= NULL
;
3785 /* If we are attached, then we can exit. Otherwise, we
3786 need to hang around doing nothing, until the child is
3788 join_inferior (pid
);
3794 extended_protocol
= 1;
3798 handle_status (own_buf
);
3801 if (own_buf
[1] == 'c' || own_buf
[1] == 'g' || own_buf
[1] == 's')
3803 ptid_t gdb_id
, thread_id
;
3806 require_running (own_buf
);
3808 gdb_id
= read_ptid (&own_buf
[2], NULL
);
3810 pid
= ptid_get_pid (gdb_id
);
3812 if (ptid_equal (gdb_id
, null_ptid
)
3813 || ptid_equal (gdb_id
, minus_one_ptid
))
3814 thread_id
= null_ptid
;
3816 && ptid_equal (pid_to_ptid (pid
),
3819 struct thread_info
*thread
=
3820 (struct thread_info
*) find_inferior (&all_threads
,
3825 write_enn (own_buf
);
3829 thread_id
= thread
->entry
.id
;
3833 thread_id
= gdb_id_to_thread_id (gdb_id
);
3834 if (ptid_equal (thread_id
, null_ptid
))
3836 write_enn (own_buf
);
3841 if (own_buf
[1] == 'g')
3843 if (ptid_equal (thread_id
, null_ptid
))
3845 /* GDB is telling us to choose any thread. Check if
3846 the currently selected thread is still valid. If
3847 it is not, select the first available. */
3848 struct thread_info
*thread
=
3849 (struct thread_info
*) find_inferior_id (&all_threads
,
3853 thread
= get_first_thread ();
3854 thread_id
= thread
->entry
.id
;
3858 general_thread
= thread_id
;
3859 set_desired_thread (1);
3861 else if (own_buf
[1] == 'c')
3862 cont_thread
= thread_id
;
3868 /* Silently ignore it so that gdb can extend the protocol
3869 without compatibility headaches. */
3874 require_running (own_buf
);
3875 if (current_traceframe
>= 0)
3877 struct regcache
*regcache
3878 = new_register_cache (current_target_desc ());
3880 if (fetch_traceframe_registers (current_traceframe
,
3882 registers_to_string (regcache
, own_buf
);
3884 write_enn (own_buf
);
3885 free_register_cache (regcache
);
3889 struct regcache
*regcache
;
3891 set_desired_thread (1);
3892 regcache
= get_thread_regcache (current_thread
, 1);
3893 registers_to_string (regcache
, own_buf
);
3897 require_running (own_buf
);
3898 if (current_traceframe
>= 0)
3899 write_enn (own_buf
);
3902 struct regcache
*regcache
;
3904 set_desired_thread (1);
3905 regcache
= get_thread_regcache (current_thread
, 1);
3906 registers_from_string (regcache
, &own_buf
[1]);
3911 require_running (own_buf
);
3912 decode_m_packet (&own_buf
[1], &mem_addr
, &len
);
3913 res
= gdb_read_memory (mem_addr
, mem_buf
, len
);
3915 write_enn (own_buf
);
3917 bin2hex (mem_buf
, own_buf
, res
);
3920 require_running (own_buf
);
3921 decode_M_packet (&own_buf
[1], &mem_addr
, &len
, &mem_buf
);
3922 if (gdb_write_memory (mem_addr
, mem_buf
, len
) == 0)
3925 write_enn (own_buf
);
3928 require_running (own_buf
);
3929 if (decode_X_packet (&own_buf
[1], packet_len
- 1,
3930 &mem_addr
, &len
, &mem_buf
) < 0
3931 || gdb_write_memory (mem_addr
, mem_buf
, len
) != 0)
3932 write_enn (own_buf
);
3937 require_running (own_buf
);
3938 hex2bin (own_buf
+ 1, &sig
, 1);
3939 if (gdb_signal_to_host_p (sig
))
3940 signal
= gdb_signal_to_host (sig
);
3943 myresume (own_buf
, 0, signal
);
3946 require_running (own_buf
);
3947 hex2bin (own_buf
+ 1, &sig
, 1);
3948 if (gdb_signal_to_host_p (sig
))
3949 signal
= gdb_signal_to_host (sig
);
3952 myresume (own_buf
, 1, signal
);
3955 require_running (own_buf
);
3957 myresume (own_buf
, 0, signal
);
3960 require_running (own_buf
);
3962 myresume (own_buf
, 1, signal
);
3964 case 'Z': /* insert_ ... */
3966 case 'z': /* remove_ ... */
3971 char type
= own_buf
[1];
3973 const int insert
= ch
== 'Z';
3974 char *p
= &own_buf
[3];
3976 p
= unpack_varlen_hex (p
, &addr
);
3977 len
= strtol (p
+ 1, &dataptr
, 16);
3981 struct breakpoint
*bp
;
3983 bp
= set_gdb_breakpoint (type
, addr
, len
, &res
);
3988 /* GDB may have sent us a list of *point parameters to
3989 be evaluated on the target's side. Read such list
3990 here. If we already have a list of parameters, GDB
3991 is telling us to drop that list and use this one
3993 clear_breakpoint_conditions_and_commands (bp
);
3994 process_point_options (bp
, &dataptr
);
3998 res
= delete_gdb_breakpoint (type
, addr
, len
);
4006 write_enn (own_buf
);
4010 response_needed
= 0;
4011 if (!target_running ())
4012 /* The packet we received doesn't make sense - but we can't
4013 reply to it, either. */
4016 fprintf (stderr
, "Killing all inferiors\n");
4017 for_each_inferior (&all_processes
, kill_inferior_callback
);
4019 /* When using the extended protocol, we wait with no program
4020 running. The traditional protocol will exit instead. */
4021 if (extended_protocol
)
4023 last_status
.kind
= TARGET_WAITKIND_EXITED
;
4024 last_status
.value
.sig
= GDB_SIGNAL_KILL
;
4032 ptid_t gdb_id
, thread_id
;
4034 require_running (own_buf
);
4036 gdb_id
= read_ptid (&own_buf
[1], NULL
);
4037 thread_id
= gdb_id_to_thread_id (gdb_id
);
4038 if (ptid_equal (thread_id
, null_ptid
))
4040 write_enn (own_buf
);
4044 if (mythread_alive (thread_id
))
4047 write_enn (own_buf
);
4051 response_needed
= 0;
4053 /* Restarting the inferior is only supported in the extended
4055 if (extended_protocol
)
4057 if (target_running ())
4058 for_each_inferior (&all_processes
,
4059 kill_inferior_callback
);
4060 fprintf (stderr
, "GDBserver restarting\n");
4062 /* Wait till we are at 1st instruction in prog. */
4063 if (program_argv
!= NULL
)
4064 start_inferior (program_argv
);
4067 last_status
.kind
= TARGET_WAITKIND_EXITED
;
4068 last_status
.value
.sig
= GDB_SIGNAL_KILL
;
4074 /* It is a request we don't understand. Respond with an
4075 empty packet so that gdb knows that we don't support this
4081 /* Extended (long) request. */
4082 handle_v_requests (own_buf
, packet_len
, &new_packet_len
);
4086 /* It is a request we don't understand. Respond with an empty
4087 packet so that gdb knows that we don't support this
4093 if (new_packet_len
!= -1)
4094 putpkt_binary (own_buf
, new_packet_len
);
4098 response_needed
= 0;
4100 if (!extended_protocol
&& have_ran
&& !target_running ())
4102 /* In non-stop, defer exiting until GDB had a chance to query
4103 the whole vStopped list (until it gets an OK). */
4104 if (QUEUE_is_empty (notif_event_p
, notif_stop
.queue
))
4106 /* Be transparent when GDB is connected through stdio -- no
4107 need to spam GDB's console. */
4108 if (!remote_connection_is_stdio ())
4109 fprintf (stderr
, "GDBserver exiting\n");
4121 /* Event-loop callback for serial events. */
4124 handle_serial_event (int err
, gdb_client_data client_data
)
4127 debug_printf ("handling possible serial event\n");
4129 /* Really handle it. */
4130 if (process_serial_event () < 0)
4133 /* Be sure to not change the selected thread behind GDB's back.
4134 Important in the non-stop mode asynchronous protocol. */
4135 set_desired_thread (1);
4140 /* Event-loop callback for target events. */
4143 handle_target_event (int err
, gdb_client_data client_data
)
4146 debug_printf ("handling possible target event\n");
4148 last_ptid
= mywait (minus_one_ptid
, &last_status
,
4151 if (last_status
.kind
== TARGET_WAITKIND_NO_RESUMED
)
4153 /* No RSP support for this yet. */
4155 else if (last_status
.kind
!= TARGET_WAITKIND_IGNORE
)
4157 int pid
= ptid_get_pid (last_ptid
);
4158 struct process_info
*process
= find_process_pid (pid
);
4159 int forward_event
= !gdb_connected () || process
->gdb_detached
;
4161 if (last_status
.kind
== TARGET_WAITKIND_EXITED
4162 || last_status
.kind
== TARGET_WAITKIND_SIGNALLED
)
4164 mark_breakpoints_out (process
);
4165 mourn_inferior (process
);
4169 /* We're reporting this thread as stopped. Update its
4170 "want-stopped" state to what the client wants, until it
4171 gets a new resume action. */
4172 current_thread
->last_resume_kind
= resume_stop
;
4173 current_thread
->last_status
= last_status
;
4178 if (!target_running ())
4180 /* The last process exited. We're done. */
4184 if (last_status
.kind
== TARGET_WAITKIND_STOPPED
)
4186 /* A thread stopped with a signal, but gdb isn't
4187 connected to handle it. Pass it down to the
4188 inferior, as if it wasn't being traced. */
4189 struct thread_resume resume_info
;
4192 debug_printf ("GDB not connected; forwarding event %d for"
4194 (int) last_status
.kind
,
4195 target_pid_to_str (last_ptid
));
4197 resume_info
.thread
= last_ptid
;
4198 resume_info
.kind
= resume_continue
;
4199 resume_info
.sig
= gdb_signal_to_host (last_status
.value
.sig
);
4200 (*the_target
->resume
) (&resume_info
, 1);
4202 else if (debug_threads
)
4203 debug_printf ("GDB not connected; ignoring event %d for [%s]\n",
4204 (int) last_status
.kind
,
4205 target_pid_to_str (last_ptid
));
4209 struct vstop_notif
*vstop_notif
4210 = xmalloc (sizeof (struct vstop_notif
));
4212 vstop_notif
->status
= last_status
;
4213 vstop_notif
->ptid
= last_ptid
;
4214 /* Push Stop notification. */
4215 notif_push (¬if_stop
,
4216 (struct notif_event
*) vstop_notif
);
4220 /* Be sure to not change the selected thread behind GDB's back.
4221 Important in the non-stop mode asynchronous protocol. */
4222 set_desired_thread (1);