1 /* Main code for remote server for GDB.
2 Copyright (C) 1989, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2002, 2003,
3 2004, 2005, 2006, 2007, 2008, 2009, 2010 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/>. */
36 ptid_t general_thread
;
41 static int extended_protocol
;
42 static int response_needed
;
43 static int exit_requested
;
48 static char **program_argv
, **wrapper_argv
;
50 /* Enable miscellaneous debugging output. The name is historical - it
51 was originally used to debug LinuxThreads support. */
54 /* Enable debugging of h/w breakpoint/watchpoint support. */
57 int pass_signals
[TARGET_SIGNAL_LAST
];
61 const char *gdbserver_xmltarget
;
63 /* The PID of the originally created or attached inferior. Used to
64 send signals to the process when GDB sends us an asynchronous interrupt
65 (user hitting Control-C in the client), and to wait for the child to exit
66 when no longer debugging it. */
68 unsigned long signal_pid
;
71 /* A file descriptor for the controlling terminal. */
74 /* TERMINAL_FD's original foreground group. */
75 pid_t old_foreground_pgrp
;
77 /* Hand back terminal ownership to the original foreground group. */
80 restore_old_foreground_pgrp (void)
82 tcsetpgrp (terminal_fd
, old_foreground_pgrp
);
86 /* Set if you want to disable optional thread related packets support
87 in gdbserver, for the sake of testing GDB against stubs that don't
89 int disable_packet_vCont
;
90 int disable_packet_Tthread
;
91 int disable_packet_qC
;
92 int disable_packet_qfThreadInfo
;
94 /* Last status reported to GDB. */
95 static struct target_waitstatus last_status
;
96 static ptid_t last_ptid
;
99 static unsigned char *mem_buf
;
101 /* Structure holding information relative to a single stop reply. We
102 keep a queue of these (really a singly-linked list) to push to GDB
106 /* Pointer to next in list. */
107 struct vstop_notif
*next
;
109 /* Thread or process that got the event. */
113 struct target_waitstatus status
;
116 /* The pending stop replies list head. */
117 static struct vstop_notif
*notif_queue
= NULL
;
119 /* Put a stop reply to the stop reply queue. */
122 queue_stop_reply (ptid_t ptid
, struct target_waitstatus
*status
)
124 struct vstop_notif
*new_notif
;
126 new_notif
= malloc (sizeof (*new_notif
));
127 new_notif
->next
= NULL
;
128 new_notif
->ptid
= ptid
;
129 new_notif
->status
= *status
;
133 struct vstop_notif
*tail
;
134 for (tail
= notif_queue
;
138 tail
->next
= new_notif
;
141 notif_queue
= new_notif
;
146 struct vstop_notif
*n
;
148 for (n
= notif_queue
; n
; n
= n
->next
)
151 fprintf (stderr
, "pending stop replies: %d\n", i
);
155 /* Place an event in the stop reply queue, and push a notification if
156 we aren't sending one yet. */
159 push_event (ptid_t ptid
, struct target_waitstatus
*status
)
161 queue_stop_reply (ptid
, status
);
163 /* If this is the first stop reply in the queue, then inform GDB
164 about it, by sending a Stop notification. */
165 if (notif_queue
->next
== NULL
)
170 prepare_resume_reply (p
,
171 notif_queue
->ptid
, ¬if_queue
->status
);
172 putpkt_notif (own_buf
);
176 /* Get rid of the currently pending stop replies for PID. If PID is
177 -1, then apply to all processes. */
180 discard_queued_stop_replies (int pid
)
182 struct vstop_notif
*prev
= NULL
, *reply
, *next
;
184 for (reply
= notif_queue
; reply
; reply
= next
)
189 || ptid_get_pid (reply
->ptid
) == pid
)
191 if (reply
== notif_queue
)
194 prev
->next
= reply
->next
;
203 /* If there are more stop replies to push, push one now. */
206 send_next_stop_reply (char *own_buf
)
209 prepare_resume_reply (own_buf
,
211 ¬if_queue
->status
);
217 target_running (void)
219 return all_threads
.head
!= NULL
;
223 start_inferior (char **argv
)
225 char **new_argv
= argv
;
227 if (wrapper_argv
!= NULL
)
231 for (i
= 0; wrapper_argv
[i
] != NULL
; i
++)
233 for (i
= 0; argv
[i
] != NULL
; i
++)
235 new_argv
= alloca (sizeof (char *) * count
);
237 for (i
= 0; wrapper_argv
[i
] != NULL
; i
++)
238 new_argv
[count
++] = wrapper_argv
[i
];
239 for (i
= 0; argv
[i
] != NULL
; i
++)
240 new_argv
[count
++] = argv
[i
];
241 new_argv
[count
] = NULL
;
247 for (i
= 0; new_argv
[i
]; ++i
)
248 fprintf (stderr
, "new_argv[%d] = \"%s\"\n", i
, new_argv
[i
]);
253 signal (SIGTTOU
, SIG_DFL
);
254 signal (SIGTTIN
, SIG_DFL
);
257 signal_pid
= create_inferior (new_argv
[0], new_argv
);
259 /* FIXME: we don't actually know at this point that the create
260 actually succeeded. We won't know that until we wait. */
261 fprintf (stderr
, "Process %s created; pid = %ld\n", argv
[0],
266 signal (SIGTTOU
, SIG_IGN
);
267 signal (SIGTTIN
, SIG_IGN
);
268 terminal_fd
= fileno (stderr
);
269 old_foreground_pgrp
= tcgetpgrp (terminal_fd
);
270 tcsetpgrp (terminal_fd
, signal_pid
);
271 atexit (restore_old_foreground_pgrp
);
274 if (wrapper_argv
!= NULL
)
276 struct thread_resume resume_info
;
279 resume_info
.thread
= pid_to_ptid (signal_pid
);
280 resume_info
.kind
= resume_continue
;
283 ptid
= mywait (pid_to_ptid (signal_pid
), &last_status
, 0, 0);
285 if (last_status
.kind
!= TARGET_WAITKIND_STOPPED
)
290 (*the_target
->resume
) (&resume_info
, 1);
292 mywait (pid_to_ptid (signal_pid
), &last_status
, 0, 0);
293 if (last_status
.kind
!= TARGET_WAITKIND_STOPPED
)
296 while (last_status
.value
.sig
!= TARGET_SIGNAL_TRAP
);
301 /* Wait till we are at 1st instruction in program, return new pid
302 (assuming success). */
303 last_ptid
= mywait (pid_to_ptid (signal_pid
), &last_status
, 0, 0);
309 attach_inferior (int pid
)
311 /* myattach should return -1 if attaching is unsupported,
312 0 if it succeeded, and call error() otherwise. */
314 if (myattach (pid
) != 0)
317 fprintf (stderr
, "Attached; pid = %d\n", pid
);
320 /* FIXME - It may be that we should get the SIGNAL_PID from the
321 attach function, so that it can be the main thread instead of
322 whichever we were told to attach to. */
327 last_ptid
= mywait (pid_to_ptid (pid
), &last_status
, 0, 0);
329 /* GDB knows to ignore the first SIGSTOP after attaching to a running
330 process using the "attach" command, but this is different; it's
331 just using "target remote". Pretend it's just starting up. */
332 if (last_status
.kind
== TARGET_WAITKIND_STOPPED
333 && last_status
.value
.sig
== TARGET_SIGNAL_STOP
)
334 last_status
.value
.sig
= TARGET_SIGNAL_TRAP
;
340 extern int remote_debug
;
342 /* Decode a qXfer read request. Return 0 if everything looks OK,
346 decode_xfer_read (char *buf
, char **annex
, CORE_ADDR
*ofs
, unsigned int *len
)
348 /* Extract and NUL-terminate the annex. */
350 while (*buf
&& *buf
!= ':')
356 /* After the read marker and annex, qXfer looks like a
357 traditional 'm' packet. */
358 decode_m_packet (buf
, ofs
, len
);
363 /* Write the response to a successful qXfer read. Returns the
364 length of the (binary) data stored in BUF, corresponding
365 to as much of DATA/LEN as we could fit. IS_MORE controls
366 the first character of the response. */
368 write_qxfer_response (char *buf
, const void *data
, int len
, int is_more
)
377 return remote_escape_output (data
, len
, (unsigned char *) buf
+ 1, &out_len
,
381 /* Handle all of the extended 'Q' packets. */
384 handle_general_set (char *own_buf
)
386 if (strncmp ("QPassSignals:", own_buf
, strlen ("QPassSignals:")) == 0)
388 int numsigs
= (int) TARGET_SIGNAL_LAST
, i
;
389 const char *p
= own_buf
+ strlen ("QPassSignals:");
392 p
= decode_address_to_semicolon (&cursig
, p
);
393 for (i
= 0; i
< numsigs
; i
++)
399 /* Keep looping, to clear the remaining signals. */
402 p
= decode_address_to_semicolon (&cursig
, p
);
407 strcpy (own_buf
, "OK");
411 if (strcmp (own_buf
, "QStartNoAckMode") == 0)
415 fprintf (stderr
, "[noack mode enabled]\n");
424 if (strncmp (own_buf
, "QNonStop:", 9) == 0)
426 char *mode
= own_buf
+ 9;
430 if (strcmp (mode
, "0") == 0)
432 else if (strcmp (mode
, "1") == 0)
436 /* We don't know what this mode is, so complain to
438 fprintf (stderr
, "Unknown non-stop mode requested: %s\n",
444 req_str
= req
? "non-stop" : "all-stop";
445 if (start_non_stop (req
) != 0)
447 fprintf (stderr
, "Setting %s mode failed\n", req_str
);
455 fprintf (stderr
, "[%s mode enabled]\n", req_str
);
461 if (target_supports_tracepoints ()
462 && handle_tracepoint_general_set (own_buf
))
465 /* Otherwise we didn't know what packet it was. Say we didn't
471 get_features_xml (const char *annex
)
473 /* gdbserver_xmltarget defines what to return when looking
474 for the "target.xml" file. Its contents can either be
475 verbatim XML code (prefixed with a '@') or else the name
476 of the actual XML file to be used in place of "target.xml".
478 This variable is set up from the auto-generated
479 init_registers_... routine for the current target. */
481 if (gdbserver_xmltarget
482 && strcmp (annex
, "target.xml") == 0)
484 if (*gdbserver_xmltarget
== '@')
485 return gdbserver_xmltarget
+ 1;
487 annex
= gdbserver_xmltarget
;
492 extern const char *const xml_builtin
[][2];
495 /* Look for the annex. */
496 for (i
= 0; xml_builtin
[i
][0] != NULL
; i
++)
497 if (strcmp (annex
, xml_builtin
[i
][0]) == 0)
500 if (xml_builtin
[i
][0] != NULL
)
501 return xml_builtin
[i
][1];
509 monitor_show_help (void)
511 monitor_output ("The following monitor commands are supported:\n");
512 monitor_output (" set debug <0|1>\n");
513 monitor_output (" Enable general debugging messages\n");
514 monitor_output (" set debug-hw-points <0|1>\n");
515 monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n");
516 monitor_output (" set remote-debug <0|1>\n");
517 monitor_output (" Enable remote protocol debugging messages\n");
518 monitor_output (" exit\n");
519 monitor_output (" Quit GDBserver\n");
522 /* Read trace frame or inferior memory. */
525 read_memory (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
)
527 if (current_traceframe
>= 0)
530 ULONGEST length
= len
;
532 if (traceframe_read_mem (current_traceframe
,
533 memaddr
, myaddr
, len
, &nbytes
))
535 /* Data read from trace buffer, we're done. */
536 if (nbytes
== length
)
538 if (!in_readonly_region (memaddr
, length
))
540 /* Otherwise we have a valid readonly case, fall through. */
541 /* (assume no half-trace half-real blocks for now) */
544 return read_inferior_memory (memaddr
, myaddr
, len
);
547 /* Write trace frame or inferior memory. Actually, writing to trace
548 frames is forbidden. */
551 write_memory (CORE_ADDR memaddr
, const unsigned char *myaddr
, int len
)
553 if (current_traceframe
>= 0)
556 return write_inferior_memory (memaddr
, myaddr
, len
);
559 /* Subroutine of handle_search_memory to simplify it. */
562 handle_search_memory_1 (CORE_ADDR start_addr
, CORE_ADDR search_space_len
,
563 gdb_byte
*pattern
, unsigned pattern_len
,
564 gdb_byte
*search_buf
,
565 unsigned chunk_size
, unsigned search_buf_size
,
566 CORE_ADDR
*found_addrp
)
568 /* Prime the search buffer. */
570 if (read_memory (start_addr
, search_buf
, search_buf_size
) != 0)
572 warning ("Unable to access target memory at 0x%lx, halting search.",
577 /* Perform the search.
579 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
580 When we've scanned N bytes we copy the trailing bytes to the start and
581 read in another N bytes. */
583 while (search_space_len
>= pattern_len
)
586 unsigned nr_search_bytes
= (search_space_len
< search_buf_size
590 found_ptr
= memmem (search_buf
, nr_search_bytes
, pattern
, pattern_len
);
592 if (found_ptr
!= NULL
)
594 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
595 *found_addrp
= found_addr
;
599 /* Not found in this chunk, skip to next chunk. */
601 /* Don't let search_space_len wrap here, it's unsigned. */
602 if (search_space_len
>= chunk_size
)
603 search_space_len
-= chunk_size
;
605 search_space_len
= 0;
607 if (search_space_len
>= pattern_len
)
609 unsigned keep_len
= search_buf_size
- chunk_size
;
610 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
613 /* Copy the trailing part of the previous iteration to the front
614 of the buffer for the next iteration. */
615 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
617 nr_to_read
= (search_space_len
- keep_len
< chunk_size
618 ? search_space_len
- keep_len
621 if (read_memory (read_addr
, search_buf
+ keep_len
,
624 warning ("Unable to access target memory at 0x%lx, halting search.",
629 start_addr
+= chunk_size
;
638 /* Handle qSearch:memory packets. */
641 handle_search_memory (char *own_buf
, int packet_len
)
643 CORE_ADDR start_addr
;
644 CORE_ADDR search_space_len
;
646 unsigned int pattern_len
;
647 /* NOTE: also defined in find.c testcase. */
648 #define SEARCH_CHUNK_SIZE 16000
649 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
650 /* Buffer to hold memory contents for searching. */
651 gdb_byte
*search_buf
;
652 unsigned search_buf_size
;
654 CORE_ADDR found_addr
;
655 int cmd_name_len
= sizeof ("qSearch:memory:") - 1;
657 pattern
= malloc (packet_len
);
660 error ("Unable to allocate memory to perform the search");
661 strcpy (own_buf
, "E00");
664 if (decode_search_memory_packet (own_buf
+ cmd_name_len
,
665 packet_len
- cmd_name_len
,
666 &start_addr
, &search_space_len
,
667 pattern
, &pattern_len
) < 0)
670 error ("Error in parsing qSearch:memory packet");
671 strcpy (own_buf
, "E00");
675 search_buf_size
= chunk_size
+ pattern_len
- 1;
677 /* No point in trying to allocate a buffer larger than the search space. */
678 if (search_space_len
< search_buf_size
)
679 search_buf_size
= search_space_len
;
681 search_buf
= malloc (search_buf_size
);
682 if (search_buf
== NULL
)
685 error ("Unable to allocate memory to perform the search");
686 strcpy (own_buf
, "E00");
690 found
= handle_search_memory_1 (start_addr
, search_space_len
,
691 pattern
, pattern_len
,
692 search_buf
, chunk_size
, search_buf_size
,
696 sprintf (own_buf
, "1,%lx", (long) found_addr
);
698 strcpy (own_buf
, "0");
700 strcpy (own_buf
, "E00");
706 #define require_running(BUF) \
707 if (!target_running ()) \
713 /* Handle monitor commands not handled by target-specific handlers. */
716 handle_monitor_command (char *mon
)
718 if (strcmp (mon
, "set debug 1") == 0)
721 monitor_output ("Debug output enabled.\n");
723 else if (strcmp (mon
, "set debug 0") == 0)
726 monitor_output ("Debug output disabled.\n");
728 else if (strcmp (mon
, "set debug-hw-points 1") == 0)
731 monitor_output ("H/W point debugging output enabled.\n");
733 else if (strcmp (mon
, "set debug-hw-points 0") == 0)
736 monitor_output ("H/W point debugging output disabled.\n");
738 else if (strcmp (mon
, "set remote-debug 1") == 0)
741 monitor_output ("Protocol debug output enabled.\n");
743 else if (strcmp (mon
, "set remote-debug 0") == 0)
746 monitor_output ("Protocol debug output disabled.\n");
748 else if (strcmp (mon
, "help") == 0)
749 monitor_show_help ();
750 else if (strcmp (mon
, "exit") == 0)
754 monitor_output ("Unknown monitor command.\n\n");
755 monitor_show_help ();
761 handle_threads_qxfer_proper (struct buffer
*buffer
)
763 struct inferior_list_entry
*thread
;
765 buffer_grow_str (buffer
, "<threads>\n");
767 for (thread
= all_threads
.head
; thread
; thread
= thread
->next
)
769 ptid_t ptid
= thread_to_gdb_id ((struct thread_info
*)thread
);
774 write_ptid (ptid_s
, ptid
);
776 if (the_target
->core_of_thread
)
777 core
= (*the_target
->core_of_thread
) (ptid
);
781 sprintf (core_s
, "%d", core
);
782 buffer_xml_printf (buffer
, "<thread id=\"%s\" core=\"%s\"/>\n",
787 buffer_xml_printf (buffer
, "<thread id=\"%s\"/>\n",
792 buffer_grow_str0 (buffer
, "</threads>\n");
796 handle_threads_qxfer (const char *annex
,
797 unsigned char *readbuf
,
798 CORE_ADDR offset
, int length
)
800 static char *result
= 0;
801 static unsigned int result_length
= 0;
803 if (annex
&& strcmp (annex
, "") != 0)
808 struct buffer buffer
;
809 /* When asked for data at offset 0, generate everything and store into
810 'result'. Successive reads will be served off 'result'. */
814 buffer_init (&buffer
);
816 handle_threads_qxfer_proper (&buffer
);
818 result
= buffer_finish (&buffer
);
819 result_length
= strlen (result
);
820 buffer_free (&buffer
);
823 if (offset
>= result_length
)
825 /* We're out of data. */
832 if (length
> result_length
- offset
)
833 length
= result_length
- offset
;
835 memcpy (readbuf
, result
+ offset
, length
);
841 /* Table used by the crc32 function to calcuate the checksum. */
843 static unsigned int crc32_table
[256] =
846 /* Compute 32 bit CRC from inferior memory.
848 On success, return 32 bit CRC.
849 On failure, return (unsigned long long) -1. */
851 static unsigned long long
852 crc32 (CORE_ADDR base
, int len
, unsigned int crc
)
856 /* Initialize the CRC table and the decoding table. */
860 for (i
= 0; i
< 256; i
++)
862 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
863 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
870 unsigned char byte
= 0;
872 /* Return failure if memory read fails. */
873 if (read_inferior_memory (base
, &byte
, 1) != 0)
874 return (unsigned long long) -1;
876 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ byte
) & 255];
879 return (unsigned long long) crc
;
882 /* Handle all of the extended 'q' packets. */
884 handle_query (char *own_buf
, int packet_len
, int *new_packet_len_p
)
886 static struct inferior_list_entry
*thread_ptr
;
888 /* Reply the current thread id. */
889 if (strcmp ("qC", own_buf
) == 0 && !disable_packet_qC
)
892 require_running (own_buf
);
894 if (!ptid_equal (general_thread
, null_ptid
)
895 && !ptid_equal (general_thread
, minus_one_ptid
))
896 gdb_id
= general_thread
;
899 thread_ptr
= all_threads
.head
;
900 gdb_id
= thread_to_gdb_id ((struct thread_info
*)thread_ptr
);
903 sprintf (own_buf
, "QC");
905 own_buf
= write_ptid (own_buf
, gdb_id
);
909 if (strcmp ("qSymbol::", own_buf
) == 0)
911 /* GDB is suggesting new symbols have been loaded. This may
912 mean a new shared library has been detected as loaded, so
913 take the opportunity to check if breakpoints we think are
914 inserted, still are. Note that it isn't guaranteed that
915 we'll see this when a shared library is loaded, and nor will
916 we see this for unloads (although breakpoints in unloaded
917 libraries shouldn't trigger), as GDB may not find symbols for
918 the library at all. We also re-validate breakpoints when we
919 see a second GDB breakpoint for the same address, and or when
920 we access breakpoint shadows. */
921 validate_breakpoints ();
923 if (target_supports_tracepoints ())
924 tracepoint_look_up_symbols ();
926 if (target_running () && the_target
->look_up_symbols
!= NULL
)
927 (*the_target
->look_up_symbols
) ();
929 strcpy (own_buf
, "OK");
933 if (!disable_packet_qfThreadInfo
)
935 if (strcmp ("qfThreadInfo", own_buf
) == 0)
939 require_running (own_buf
);
940 thread_ptr
= all_threads
.head
;
943 gdb_id
= thread_to_gdb_id ((struct thread_info
*)thread_ptr
);
944 write_ptid (own_buf
, gdb_id
);
945 thread_ptr
= thread_ptr
->next
;
949 if (strcmp ("qsThreadInfo", own_buf
) == 0)
953 require_running (own_buf
);
954 if (thread_ptr
!= NULL
)
957 gdb_id
= thread_to_gdb_id ((struct thread_info
*)thread_ptr
);
958 write_ptid (own_buf
, gdb_id
);
959 thread_ptr
= thread_ptr
->next
;
964 sprintf (own_buf
, "l");
970 if (the_target
->read_offsets
!= NULL
971 && strcmp ("qOffsets", own_buf
) == 0)
973 CORE_ADDR text
, data
;
975 require_running (own_buf
);
976 if (the_target
->read_offsets (&text
, &data
))
977 sprintf (own_buf
, "Text=%lX;Data=%lX;Bss=%lX",
978 (long)text
, (long)data
, (long)data
);
985 if (the_target
->qxfer_spu
!= NULL
986 && strncmp ("qXfer:spu:read:", own_buf
, 15) == 0)
992 unsigned char *spu_buf
;
994 require_running (own_buf
);
995 strcpy (own_buf
, "E00");
996 if (decode_xfer_read (own_buf
+ 15, &annex
, &ofs
, &len
) < 0)
998 if (len
> PBUFSIZ
- 2)
1000 spu_buf
= malloc (len
+ 1);
1004 n
= (*the_target
->qxfer_spu
) (annex
, spu_buf
, NULL
, ofs
, len
+ 1);
1006 write_enn (own_buf
);
1008 *new_packet_len_p
= write_qxfer_response (own_buf
, spu_buf
, len
, 1);
1010 *new_packet_len_p
= write_qxfer_response (own_buf
, spu_buf
, n
, 0);
1016 if (the_target
->qxfer_spu
!= NULL
1017 && strncmp ("qXfer:spu:write:", own_buf
, 16) == 0)
1023 unsigned char *spu_buf
;
1025 require_running (own_buf
);
1026 strcpy (own_buf
, "E00");
1027 spu_buf
= malloc (packet_len
- 15);
1030 if (decode_xfer_write (own_buf
+ 16, packet_len
- 16, &annex
,
1031 &ofs
, &len
, spu_buf
) < 0)
1037 n
= (*the_target
->qxfer_spu
)
1038 (annex
, NULL
, (unsigned const char *)spu_buf
, ofs
, len
);
1040 write_enn (own_buf
);
1042 sprintf (own_buf
, "%x", n
);
1048 if (the_target
->read_auxv
!= NULL
1049 && strncmp ("qXfer:auxv:read:", own_buf
, 16) == 0)
1051 unsigned char *data
;
1057 require_running (own_buf
);
1059 /* Reject any annex; grab the offset and length. */
1060 if (decode_xfer_read (own_buf
+ 16, &annex
, &ofs
, &len
) < 0
1061 || annex
[0] != '\0')
1063 strcpy (own_buf
, "E00");
1067 /* Read one extra byte, as an indicator of whether there is
1069 if (len
> PBUFSIZ
- 2)
1071 data
= malloc (len
+ 1);
1074 write_enn (own_buf
);
1077 n
= (*the_target
->read_auxv
) (ofs
, data
, len
+ 1);
1079 write_enn (own_buf
);
1081 *new_packet_len_p
= write_qxfer_response (own_buf
, data
, len
, 1);
1083 *new_packet_len_p
= write_qxfer_response (own_buf
, data
, n
, 0);
1090 if (strncmp ("qXfer:features:read:", own_buf
, 20) == 0)
1093 unsigned int len
, total_len
;
1094 const char *document
;
1097 require_running (own_buf
);
1099 /* Grab the annex, offset, and length. */
1100 if (decode_xfer_read (own_buf
+ 20, &annex
, &ofs
, &len
) < 0)
1102 strcpy (own_buf
, "E00");
1106 /* Now grab the correct annex. */
1107 document
= get_features_xml (annex
);
1108 if (document
== NULL
)
1110 strcpy (own_buf
, "E00");
1114 total_len
= strlen (document
);
1115 if (len
> PBUFSIZ
- 2)
1118 if (ofs
> total_len
)
1119 write_enn (own_buf
);
1120 else if (len
< total_len
- ofs
)
1121 *new_packet_len_p
= write_qxfer_response (own_buf
, document
+ ofs
,
1124 *new_packet_len_p
= write_qxfer_response (own_buf
, document
+ ofs
,
1125 total_len
- ofs
, 0);
1130 if (strncmp ("qXfer:libraries:read:", own_buf
, 21) == 0)
1133 unsigned int len
, total_len
;
1135 struct inferior_list_entry
*dll_ptr
;
1138 require_running (own_buf
);
1140 /* Reject any annex; grab the offset and length. */
1141 if (decode_xfer_read (own_buf
+ 21, &annex
, &ofs
, &len
) < 0
1142 || annex
[0] != '\0')
1144 strcpy (own_buf
, "E00");
1148 /* Over-estimate the necessary memory. Assume that every character
1149 in the library name must be escaped. */
1151 for (dll_ptr
= all_dlls
.head
; dll_ptr
!= NULL
; dll_ptr
= dll_ptr
->next
)
1152 total_len
+= 128 + 6 * strlen (((struct dll_info
*) dll_ptr
)->name
);
1154 document
= malloc (total_len
);
1155 if (document
== NULL
)
1157 write_enn (own_buf
);
1160 strcpy (document
, "<library-list>\n");
1161 p
= document
+ strlen (document
);
1163 for (dll_ptr
= all_dlls
.head
; dll_ptr
!= NULL
; dll_ptr
= dll_ptr
->next
)
1165 struct dll_info
*dll
= (struct dll_info
*) dll_ptr
;
1168 strcpy (p
, " <library name=\"");
1170 name
= xml_escape_text (dll
->name
);
1174 strcpy (p
, "\"><segment address=\"");
1176 sprintf (p
, "0x%lx", (long) dll
->base_addr
);
1178 strcpy (p
, "\"/></library>\n");
1182 strcpy (p
, "</library-list>\n");
1184 total_len
= strlen (document
);
1185 if (len
> PBUFSIZ
- 2)
1188 if (ofs
> total_len
)
1189 write_enn (own_buf
);
1190 else if (len
< total_len
- ofs
)
1191 *new_packet_len_p
= write_qxfer_response (own_buf
, document
+ ofs
,
1194 *new_packet_len_p
= write_qxfer_response (own_buf
, document
+ ofs
,
1195 total_len
- ofs
, 0);
1201 if (the_target
->qxfer_osdata
!= NULL
1202 && strncmp ("qXfer:osdata:read:", own_buf
, 18) == 0)
1208 unsigned char *workbuf
;
1210 strcpy (own_buf
, "E00");
1211 if (decode_xfer_read (own_buf
+ 18, &annex
, &ofs
, &len
) < 0)
1213 if (len
> PBUFSIZ
- 2)
1215 workbuf
= malloc (len
+ 1);
1219 n
= (*the_target
->qxfer_osdata
) (annex
, workbuf
, NULL
, ofs
, len
+ 1);
1221 write_enn (own_buf
);
1223 *new_packet_len_p
= write_qxfer_response (own_buf
, workbuf
, len
, 1);
1225 *new_packet_len_p
= write_qxfer_response (own_buf
, workbuf
, n
, 0);
1231 if (the_target
->qxfer_siginfo
!= NULL
1232 && strncmp ("qXfer:siginfo:read:", own_buf
, 19) == 0)
1234 unsigned char *data
;
1240 require_running (own_buf
);
1242 /* Reject any annex; grab the offset and length. */
1243 if (decode_xfer_read (own_buf
+ 19, &annex
, &ofs
, &len
) < 0
1244 || annex
[0] != '\0')
1246 strcpy (own_buf
, "E00");
1250 /* Read one extra byte, as an indicator of whether there is
1252 if (len
> PBUFSIZ
- 2)
1254 data
= malloc (len
+ 1);
1257 n
= (*the_target
->qxfer_siginfo
) (annex
, data
, NULL
, ofs
, len
+ 1);
1259 write_enn (own_buf
);
1261 *new_packet_len_p
= write_qxfer_response (own_buf
, data
, len
, 1);
1263 *new_packet_len_p
= write_qxfer_response (own_buf
, data
, n
, 0);
1269 if (the_target
->qxfer_siginfo
!= NULL
1270 && strncmp ("qXfer:siginfo:write:", own_buf
, 20) == 0)
1276 unsigned char *data
;
1278 require_running (own_buf
);
1280 strcpy (own_buf
, "E00");
1281 data
= malloc (packet_len
- 19);
1284 if (decode_xfer_write (own_buf
+ 20, packet_len
- 20, &annex
,
1285 &ofs
, &len
, data
) < 0)
1291 n
= (*the_target
->qxfer_siginfo
)
1292 (annex
, NULL
, (unsigned const char *)data
, ofs
, len
);
1294 write_enn (own_buf
);
1296 sprintf (own_buf
, "%x", n
);
1302 if (strncmp ("qXfer:threads:read:", own_buf
, 19) == 0)
1304 unsigned char *data
;
1310 require_running (own_buf
);
1312 /* Reject any annex; grab the offset and length. */
1313 if (decode_xfer_read (own_buf
+ 19, &annex
, &ofs
, &len
) < 0
1314 || annex
[0] != '\0')
1316 strcpy (own_buf
, "E00");
1320 /* Read one extra byte, as an indicator of whether there is
1322 if (len
> PBUFSIZ
- 2)
1324 data
= malloc (len
+ 1);
1327 n
= handle_threads_qxfer (annex
, data
, ofs
, len
+ 1);
1329 write_enn (own_buf
);
1331 *new_packet_len_p
= write_qxfer_response (own_buf
, data
, len
, 1);
1333 *new_packet_len_p
= write_qxfer_response (own_buf
, data
, n
, 0);
1339 if (strncmp ("qXfer:statictrace:read:", own_buf
,
1340 sizeof ("qXfer:statictrace:read:") -1) == 0)
1342 unsigned char *data
;
1348 require_running (own_buf
);
1350 if (current_traceframe
== -1)
1352 write_enn (own_buf
);
1356 /* Reject any annex; grab the offset and length. */
1357 if (decode_xfer_read (own_buf
+ sizeof ("qXfer:statictrace:read:") -1,
1358 &annex
, &ofs
, &len
) < 0
1359 || annex
[0] != '\0')
1361 strcpy (own_buf
, "E00");
1365 /* Read one extra byte, as an indicator of whether there is
1367 if (len
> PBUFSIZ
- 2)
1369 data
= malloc (len
+ 1);
1373 if (traceframe_read_sdata (current_traceframe
, ofs
,
1374 data
, len
+ 1, &nbytes
))
1375 write_enn (own_buf
);
1376 else if (nbytes
> len
)
1377 *new_packet_len_p
= write_qxfer_response (own_buf
, data
, len
, 1);
1379 *new_packet_len_p
= write_qxfer_response (own_buf
, data
, nbytes
, 0);
1385 /* Protocol features query. */
1386 if (strncmp ("qSupported", own_buf
, 10) == 0
1387 && (own_buf
[10] == ':' || own_buf
[10] == '\0'))
1389 char *p
= &own_buf
[10];
1390 int gdb_supports_qRelocInsn
= 0;
1392 /* Start processing qSupported packet. */
1393 target_process_qsupported (NULL
);
1395 /* Process each feature being provided by GDB. The first
1396 feature will follow a ':', and latter features will follow
1400 char **qsupported
= NULL
;
1404 /* Two passes, to avoid nested strtok calls in
1405 target_process_qsupported. */
1406 for (p
= strtok (p
+ 1, ";");
1408 p
= strtok (NULL
, ";"))
1411 qsupported
= xrealloc (qsupported
, count
* sizeof (char *));
1412 qsupported
[count
- 1] = xstrdup (p
);
1415 for (i
= 0; i
< count
; i
++)
1418 if (strcmp (p
, "multiprocess+") == 0)
1420 /* GDB supports and wants multi-process support if
1422 if (target_supports_multi_process ())
1425 else if (strcmp (p
, "qRelocInsn+") == 0)
1427 /* GDB supports relocate instruction requests. */
1428 gdb_supports_qRelocInsn
= 1;
1431 target_process_qsupported (p
);
1439 sprintf (own_buf
, "PacketSize=%x;QPassSignals+", PBUFSIZ
- 1);
1441 /* We do not have any hook to indicate whether the target backend
1442 supports qXfer:libraries:read, so always report it. */
1443 strcat (own_buf
, ";qXfer:libraries:read+");
1445 if (the_target
->read_auxv
!= NULL
)
1446 strcat (own_buf
, ";qXfer:auxv:read+");
1448 if (the_target
->qxfer_spu
!= NULL
)
1449 strcat (own_buf
, ";qXfer:spu:read+;qXfer:spu:write+");
1451 if (the_target
->qxfer_siginfo
!= NULL
)
1452 strcat (own_buf
, ";qXfer:siginfo:read+;qXfer:siginfo:write+");
1454 /* We always report qXfer:features:read, as targets may
1455 install XML files on a subsequent call to arch_setup.
1456 If we reported to GDB on startup that we don't support
1457 qXfer:feature:read at all, we will never be re-queried. */
1458 strcat (own_buf
, ";qXfer:features:read+");
1460 if (transport_is_reliable
)
1461 strcat (own_buf
, ";QStartNoAckMode+");
1463 if (the_target
->qxfer_osdata
!= NULL
)
1464 strcat (own_buf
, ";qXfer:osdata:read+");
1466 if (target_supports_multi_process ())
1467 strcat (own_buf
, ";multiprocess+");
1469 if (target_supports_non_stop ())
1470 strcat (own_buf
, ";QNonStop+");
1472 strcat (own_buf
, ";qXfer:threads:read+");
1474 if (target_supports_tracepoints ())
1476 strcat (own_buf
, ";ConditionalTracepoints+");
1477 strcat (own_buf
, ";TraceStateVariables+");
1478 strcat (own_buf
, ";TracepointSource+");
1479 strcat (own_buf
, ";DisconnectedTracing+");
1480 if (gdb_supports_qRelocInsn
&& target_supports_fast_tracepoints ())
1481 strcat (own_buf
, ";FastTracepoints+");
1482 strcat (own_buf
, ";StaticTracepoints+");
1483 strcat (own_buf
, ";qXfer:statictrace:read+");
1489 /* Thread-local storage support. */
1490 if (the_target
->get_tls_address
!= NULL
1491 && strncmp ("qGetTLSAddr:", own_buf
, 12) == 0)
1493 char *p
= own_buf
+ 12;
1494 CORE_ADDR parts
[2], address
= 0;
1496 ptid_t ptid
= null_ptid
;
1498 require_running (own_buf
);
1500 for (i
= 0; i
< 3; i
++)
1508 p2
= strchr (p
, ',');
1521 ptid
= read_ptid (p
, NULL
);
1523 decode_address (&parts
[i
- 1], p
, len
);
1527 if (p
!= NULL
|| i
< 3)
1531 struct thread_info
*thread
= find_thread_ptid (ptid
);
1536 err
= the_target
->get_tls_address (thread
, parts
[0], parts
[1],
1542 sprintf (own_buf
, "%llx", address
);
1547 write_enn (own_buf
);
1551 /* Otherwise, pretend we do not understand this packet. */
1554 /* Windows OS Thread Information Block address support. */
1555 if (the_target
->get_tib_address
!= NULL
1556 && strncmp ("qGetTIBAddr:", own_buf
, 12) == 0)
1561 ptid_t ptid
= read_ptid (own_buf
+ 12, &annex
);
1563 n
= (*the_target
->get_tib_address
) (ptid
, &tlb
);
1566 sprintf (own_buf
, "%llx", tlb
);
1571 write_enn (own_buf
);
1577 /* Handle "monitor" commands. */
1578 if (strncmp ("qRcmd,", own_buf
, 6) == 0)
1580 char *mon
= malloc (PBUFSIZ
);
1581 int len
= strlen (own_buf
+ 6);
1585 write_enn (own_buf
);
1589 if ((len
% 2) != 0 || unhexify (mon
, own_buf
+ 6, len
/ 2) != len
/ 2)
1591 write_enn (own_buf
);
1595 mon
[len
/ 2] = '\0';
1599 if (the_target
->handle_monitor_command
== NULL
1600 || (*the_target
->handle_monitor_command
) (mon
) == 0)
1601 /* Default processing. */
1602 handle_monitor_command (mon
);
1608 if (strncmp ("qSearch:memory:", own_buf
, sizeof ("qSearch:memory:") - 1) == 0)
1610 require_running (own_buf
);
1611 handle_search_memory (own_buf
, packet_len
);
1615 if (strcmp (own_buf
, "qAttached") == 0
1616 || strncmp (own_buf
, "qAttached:", sizeof ("qAttached:") - 1) == 0)
1618 struct process_info
*process
;
1620 if (own_buf
[sizeof ("qAttached") - 1])
1622 int pid
= strtoul (own_buf
+ sizeof ("qAttached:") - 1, NULL
, 16);
1623 process
= (struct process_info
*)
1624 find_inferior_id (&all_processes
, pid_to_ptid (pid
));
1628 require_running (own_buf
);
1629 process
= current_process ();
1632 if (process
== NULL
)
1634 write_enn (own_buf
);
1638 strcpy (own_buf
, process
->attached
? "1" : "0");
1642 if (strncmp ("qCRC:", own_buf
, 5) == 0)
1644 /* CRC check (compare-section). */
1648 unsigned long long crc
;
1650 require_running (own_buf
);
1651 base
= strtoul (own_buf
+ 5, &comma
, 16);
1652 if (*comma
++ != ',')
1654 write_enn (own_buf
);
1657 len
= strtoul (comma
, NULL
, 16);
1658 crc
= crc32 (base
, len
, 0xffffffff);
1659 /* Check for memory failure. */
1660 if (crc
== (unsigned long long) -1)
1662 write_enn (own_buf
);
1665 sprintf (own_buf
, "C%lx", (unsigned long) crc
);
1669 if (target_supports_tracepoints () && handle_tracepoint_query (own_buf
))
1672 /* Otherwise we didn't know what packet it was. Say we didn't
1677 /* Parse vCont packets. */
1679 handle_v_cont (char *own_buf
)
1683 struct thread_resume
*resume_info
;
1684 struct thread_resume default_action
= {{0}};
1686 /* Count the number of semicolons in the packet. There should be one
1687 for every action. */
1693 p
= strchr (p
, ';');
1696 resume_info
= malloc (n
* sizeof (resume_info
[0]));
1697 if (resume_info
== NULL
)
1705 if (p
[0] == 's' || p
[0] == 'S')
1706 resume_info
[i
].kind
= resume_step
;
1707 else if (p
[0] == 'c' || p
[0] == 'C')
1708 resume_info
[i
].kind
= resume_continue
;
1709 else if (p
[0] == 't')
1710 resume_info
[i
].kind
= resume_stop
;
1714 if (p
[0] == 'S' || p
[0] == 'C')
1717 sig
= strtol (p
+ 1, &q
, 16);
1722 if (!target_signal_to_host_p (sig
))
1724 resume_info
[i
].sig
= target_signal_to_host (sig
);
1728 resume_info
[i
].sig
= 0;
1734 resume_info
[i
].thread
= minus_one_ptid
;
1735 default_action
= resume_info
[i
];
1737 /* Note: we don't increment i here, we'll overwrite this entry
1738 the next time through. */
1740 else if (p
[0] == ':')
1742 ptid_t ptid
= read_ptid (p
+ 1, &q
);
1747 if (p
[0] != ';' && p
[0] != 0)
1750 resume_info
[i
].thread
= ptid
;
1757 resume_info
[i
] = default_action
;
1759 /* Still used in occasional places in the backend. */
1761 && !ptid_equal (resume_info
[0].thread
, minus_one_ptid
)
1762 && resume_info
[0].kind
!= resume_stop
)
1763 cont_thread
= resume_info
[0].thread
;
1765 cont_thread
= minus_one_ptid
;
1766 set_desired_inferior (0);
1771 (*the_target
->resume
) (resume_info
, n
);
1779 last_ptid
= mywait (minus_one_ptid
, &last_status
, 0, 1);
1780 prepare_resume_reply (own_buf
, last_ptid
, &last_status
);
1781 disable_async_io ();
1786 write_enn (own_buf
);
1791 /* Attach to a new program. Return 1 if successful, 0 if failure. */
1793 handle_v_attach (char *own_buf
)
1797 pid
= strtol (own_buf
+ 8, NULL
, 16);
1798 if (pid
!= 0 && attach_inferior (pid
) == 0)
1800 /* Don't report shared library events after attaching, even if
1801 some libraries are preloaded. GDB will always poll the
1802 library list. Avoids the "stopped by shared library event"
1803 notice on the GDB side. */
1808 /* In non-stop, we don't send a resume reply. Stop events
1809 will follow up using the normal notification
1814 prepare_resume_reply (own_buf
, last_ptid
, &last_status
);
1820 write_enn (own_buf
);
1825 /* Run a new program. Return 1 if successful, 0 if failure. */
1827 handle_v_run (char *own_buf
)
1829 char *p
, *next_p
, **new_argv
;
1833 for (p
= own_buf
+ strlen ("vRun;"); p
&& *p
; p
= strchr (p
, ';'))
1839 new_argv
= calloc (new_argc
+ 2, sizeof (char *));
1840 if (new_argv
== NULL
)
1842 write_enn (own_buf
);
1847 for (p
= own_buf
+ strlen ("vRun;"); *p
; p
= next_p
)
1849 next_p
= strchr (p
, ';');
1851 next_p
= p
+ strlen (p
);
1853 if (i
== 0 && p
== next_p
)
1857 /* FIXME: Fail request if out of memory instead of dying. */
1858 new_argv
[i
] = xmalloc (1 + (next_p
- p
) / 2);
1859 unhexify (new_argv
[i
], p
, (next_p
- p
) / 2);
1860 new_argv
[i
][(next_p
- p
) / 2] = '\0';
1869 if (new_argv
[0] == NULL
)
1871 /* GDB didn't specify a program to run. Use the program from the
1872 last run with the new argument list. */
1874 if (program_argv
== NULL
)
1876 /* FIXME: new_argv memory leak */
1877 write_enn (own_buf
);
1881 new_argv
[0] = strdup (program_argv
[0]);
1882 if (new_argv
[0] == NULL
)
1884 /* FIXME: new_argv memory leak */
1885 write_enn (own_buf
);
1890 /* Free the old argv and install the new one. */
1891 freeargv (program_argv
);
1892 program_argv
= new_argv
;
1894 start_inferior (program_argv
);
1895 if (last_status
.kind
== TARGET_WAITKIND_STOPPED
)
1897 prepare_resume_reply (own_buf
, last_ptid
, &last_status
);
1899 /* In non-stop, sending a resume reply doesn't set the general
1900 thread, but GDB assumes a vRun sets it (this is so GDB can
1901 query which is the main thread of the new inferior. */
1903 general_thread
= last_ptid
;
1909 write_enn (own_buf
);
1914 /* Kill process. Return 1 if successful, 0 if failure. */
1916 handle_v_kill (char *own_buf
)
1919 char *p
= &own_buf
[6];
1921 pid
= strtol (p
, NULL
, 16);
1924 if (pid
!= 0 && kill_inferior (pid
) == 0)
1926 last_status
.kind
= TARGET_WAITKIND_SIGNALLED
;
1927 last_status
.value
.sig
= TARGET_SIGNAL_KILL
;
1928 last_ptid
= pid_to_ptid (pid
);
1929 discard_queued_stop_replies (pid
);
1935 write_enn (own_buf
);
1940 /* Handle a 'vStopped' packet. */
1942 handle_v_stopped (char *own_buf
)
1944 /* If we're waiting for GDB to acknowledge a pending stop reply,
1945 consider that done. */
1948 struct vstop_notif
*head
;
1951 fprintf (stderr
, "vStopped: acking %s\n",
1952 target_pid_to_str (notif_queue
->ptid
));
1955 notif_queue
= notif_queue
->next
;
1959 /* Push another stop reply, or if there are no more left, an OK. */
1960 send_next_stop_reply (own_buf
);
1963 /* Handle all of the extended 'v' packets. */
1965 handle_v_requests (char *own_buf
, int packet_len
, int *new_packet_len
)
1967 if (!disable_packet_vCont
)
1969 if (strncmp (own_buf
, "vCont;", 6) == 0)
1971 require_running (own_buf
);
1972 handle_v_cont (own_buf
);
1976 if (strncmp (own_buf
, "vCont?", 6) == 0)
1978 strcpy (own_buf
, "vCont;c;C;s;S;t");
1983 if (strncmp (own_buf
, "vFile:", 6) == 0
1984 && handle_vFile (own_buf
, packet_len
, new_packet_len
))
1987 if (strncmp (own_buf
, "vAttach;", 8) == 0)
1989 if (!multi_process
&& target_running ())
1991 fprintf (stderr
, "Already debugging a process\n");
1992 write_enn (own_buf
);
1995 handle_v_attach (own_buf
);
1999 if (strncmp (own_buf
, "vRun;", 5) == 0)
2001 if (!multi_process
&& target_running ())
2003 fprintf (stderr
, "Already debugging a process\n");
2004 write_enn (own_buf
);
2007 handle_v_run (own_buf
);
2011 if (strncmp (own_buf
, "vKill;", 6) == 0)
2013 if (!target_running ())
2015 fprintf (stderr
, "No process to kill\n");
2016 write_enn (own_buf
);
2019 handle_v_kill (own_buf
);
2023 if (strncmp (own_buf
, "vStopped", 8) == 0)
2025 handle_v_stopped (own_buf
);
2029 /* Otherwise we didn't know what packet it was. Say we didn't
2035 /* Resume inferior and wait for another event. In non-stop mode,
2036 don't really wait here, but return immediatelly to the event
2039 myresume (char *own_buf
, int step
, int sig
)
2041 struct thread_resume resume_info
[2];
2043 int valid_cont_thread
;
2045 set_desired_inferior (0);
2047 valid_cont_thread
= (!ptid_equal (cont_thread
, null_ptid
)
2048 && !ptid_equal (cont_thread
, minus_one_ptid
));
2050 if (step
|| sig
|| valid_cont_thread
)
2052 resume_info
[0].thread
2053 = ((struct inferior_list_entry
*) current_inferior
)->id
;
2055 resume_info
[0].kind
= resume_step
;
2057 resume_info
[0].kind
= resume_continue
;
2058 resume_info
[0].sig
= sig
;
2062 if (!valid_cont_thread
)
2064 resume_info
[n
].thread
= minus_one_ptid
;
2065 resume_info
[n
].kind
= resume_continue
;
2066 resume_info
[n
].sig
= 0;
2073 (*the_target
->resume
) (resume_info
, n
);
2079 last_ptid
= mywait (minus_one_ptid
, &last_status
, 0, 1);
2080 prepare_resume_reply (own_buf
, last_ptid
, &last_status
);
2081 disable_async_io ();
2085 /* Callback for for_each_inferior. Make a new stop reply for each
2089 queue_stop_reply_callback (struct inferior_list_entry
*entry
, void *arg
)
2091 struct thread_info
*thread
= (struct thread_info
*) entry
;
2093 /* For now, assume targets that don't have this callback also don't
2094 manage the thread's last_status field. */
2095 if (the_target
->thread_stopped
== NULL
)
2097 struct target_waitstatus status
;
2099 status
.kind
= TARGET_WAITKIND_STOPPED
;
2100 status
.value
.sig
= TARGET_SIGNAL_TRAP
;
2102 /* Pass the last stop reply back to GDB, but don't notify
2104 queue_stop_reply (entry
->id
, &thread
->last_status
);
2108 if (thread_stopped (thread
))
2111 fprintf (stderr
, "Reporting thread %s as already stopped with %s\n",
2112 target_pid_to_str (entry
->id
),
2113 target_waitstatus_to_string (&thread
->last_status
));
2115 /* Pass the last stop reply back to GDB, but don't notify
2117 queue_stop_reply (entry
->id
, &thread
->last_status
);
2124 /* Set this inferior LWP's state as "want-stopped". We won't resume
2125 this LWP until the client gives us another action for it. */
2128 gdb_wants_thread_stopped (struct inferior_list_entry
*entry
)
2130 struct thread_info
*thread
= (struct thread_info
*) entry
;
2132 thread
->last_resume_kind
= resume_stop
;
2134 if (thread
->last_status
.kind
== TARGET_WAITKIND_IGNORE
)
2136 thread
->last_status
.kind
= TARGET_WAITKIND_STOPPED
;
2137 thread
->last_status
.value
.sig
= TARGET_SIGNAL_0
;
2141 /* Set all threads' states as "want-stopped". */
2144 gdb_wants_all_threads_stopped (void)
2146 for_each_inferior (&all_threads
, gdb_wants_thread_stopped
);
2149 /* Clear the gdb_detached flag of every process. */
2152 gdb_reattached_process (struct inferior_list_entry
*entry
)
2154 struct process_info
*process
= (struct process_info
*) entry
;
2156 process
->gdb_detached
= 0;
2159 /* Status handler for the '?' packet. */
2162 handle_status (char *own_buf
)
2164 /* GDB is connected, don't forward events to the target anymore. */
2165 for_each_inferior (&all_processes
, gdb_reattached_process
);
2167 /* In non-stop mode, we must send a stop reply for each stopped
2168 thread. In all-stop mode, just send one for the first stopped
2173 discard_queued_stop_replies (-1);
2174 find_inferior (&all_threads
, queue_stop_reply_callback
, NULL
);
2176 /* The first is sent immediatly. OK is sent if there is no
2177 stopped thread, which is the same handling of the vStopped
2178 packet (by design). */
2179 send_next_stop_reply (own_buf
);
2184 stabilize_threads ();
2185 gdb_wants_all_threads_stopped ();
2187 if (all_threads
.head
)
2189 struct target_waitstatus status
;
2191 status
.kind
= TARGET_WAITKIND_STOPPED
;
2192 status
.value
.sig
= TARGET_SIGNAL_TRAP
;
2193 prepare_resume_reply (own_buf
,
2194 all_threads
.head
->id
, &status
);
2197 strcpy (own_buf
, "W00");
2202 gdbserver_version (void)
2204 printf ("GNU gdbserver %s%s\n"
2205 "Copyright (C) 2010 Free Software Foundation, Inc.\n"
2206 "gdbserver is free software, covered by the GNU General Public License.\n"
2207 "This gdbserver was configured as \"%s\"\n",
2208 PKGVERSION
, version
, host_name
);
2212 gdbserver_usage (FILE *stream
)
2214 fprintf (stream
, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n"
2215 "\tgdbserver [OPTIONS] --attach COMM PID\n"
2216 "\tgdbserver [OPTIONS] --multi COMM\n"
2218 "COMM may either be a tty device (for serial debugging), or \n"
2219 "HOST:PORT to listen for a TCP connection.\n"
2222 " --debug Enable general debugging output.\n"
2223 " --remote-debug Enable remote protocol debugging output.\n"
2224 " --version Display version information and exit.\n"
2225 " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n");
2226 if (REPORT_BUGS_TO
[0] && stream
== stdout
)
2227 fprintf (stream
, "Report bugs to \"%s\".\n", REPORT_BUGS_TO
);
2231 gdbserver_show_disableable (FILE *stream
)
2233 fprintf (stream
, "Disableable packets:\n"
2234 " vCont \tAll vCont packets\n"
2235 " qC \tQuerying the current thread\n"
2236 " qfThreadInfo\tThread listing\n"
2237 " Tthread \tPassing the thread specifier in the T stop reply packet\n"
2238 " threads \tAll of the above\n");
2242 #undef require_running
2243 #define require_running(BUF) \
2244 if (!target_running ()) \
2251 first_thread_of (struct inferior_list_entry
*entry
, void *args
)
2253 int pid
= * (int *) args
;
2255 if (ptid_get_pid (entry
->id
) == pid
)
2262 kill_inferior_callback (struct inferior_list_entry
*entry
)
2264 struct process_info
*process
= (struct process_info
*) entry
;
2265 int pid
= ptid_get_pid (process
->head
.id
);
2267 kill_inferior (pid
);
2268 discard_queued_stop_replies (pid
);
2271 /* Callback for for_each_inferior to detach or kill the inferior,
2272 depending on whether we attached to it or not.
2273 We inform the user whether we're detaching or killing the process
2274 as this is only called when gdbserver is about to exit. */
2277 detach_or_kill_inferior_callback (struct inferior_list_entry
*entry
)
2279 struct process_info
*process
= (struct process_info
*) entry
;
2280 int pid
= ptid_get_pid (process
->head
.id
);
2282 if (process
->attached
)
2283 detach_inferior (pid
);
2285 kill_inferior (pid
);
2287 discard_queued_stop_replies (pid
);
2290 /* for_each_inferior callback for detach_or_kill_for_exit to print
2291 the pids of started inferiors. */
2294 print_started_pid (struct inferior_list_entry
*entry
)
2296 struct process_info
*process
= (struct process_info
*) entry
;
2298 if (! process
->attached
)
2300 int pid
= ptid_get_pid (process
->head
.id
);
2301 fprintf (stderr
, " %d", pid
);
2305 /* for_each_inferior callback for detach_or_kill_for_exit to print
2306 the pids of attached inferiors. */
2309 print_attached_pid (struct inferior_list_entry
*entry
)
2311 struct process_info
*process
= (struct process_info
*) entry
;
2313 if (process
->attached
)
2315 int pid
= ptid_get_pid (process
->head
.id
);
2316 fprintf (stderr
, " %d", pid
);
2320 /* Call this when exiting gdbserver with possible inferiors that need
2321 to be killed or detached from. */
2324 detach_or_kill_for_exit (void)
2326 /* First print a list of the inferiors we will be killing/detaching.
2327 This is to assist the user, for example, in case the inferior unexpectedly
2328 dies after we exit: did we screw up or did the inferior exit on its own?
2329 Having this info will save some head-scratching. */
2331 if (have_started_inferiors_p ())
2333 fprintf (stderr
, "Killing process(es):");
2334 for_each_inferior (&all_processes
, print_started_pid
);
2335 fprintf (stderr
, "\n");
2337 if (have_attached_inferiors_p ())
2339 fprintf (stderr
, "Detaching process(es):");
2340 for_each_inferior (&all_processes
, print_attached_pid
);
2341 fprintf (stderr
, "\n");
2344 /* Now we can kill or detach the inferiors. */
2346 for_each_inferior (&all_processes
, detach_or_kill_inferior_callback
);
2350 join_inferiors_callback (struct inferior_list_entry
*entry
)
2352 struct process_info
*process
= (struct process_info
*) entry
;
2354 /* If we are attached, then we can exit. Otherwise, we need to hang
2355 around doing nothing, until the child is gone. */
2356 if (!process
->attached
)
2357 join_inferior (ptid_get_pid (process
->head
.id
));
2361 main (int argc
, char *argv
[])
2365 char *arg_end
, *port
;
2366 char **next_arg
= &argv
[1];
2371 while (*next_arg
!= NULL
&& **next_arg
== '-')
2373 if (strcmp (*next_arg
, "--version") == 0)
2375 gdbserver_version ();
2378 else if (strcmp (*next_arg
, "--help") == 0)
2380 gdbserver_usage (stdout
);
2383 else if (strcmp (*next_arg
, "--attach") == 0)
2385 else if (strcmp (*next_arg
, "--multi") == 0)
2387 else if (strcmp (*next_arg
, "--wrapper") == 0)
2391 wrapper_argv
= next_arg
;
2392 while (*next_arg
!= NULL
&& strcmp (*next_arg
, "--") != 0)
2395 if (next_arg
== wrapper_argv
|| *next_arg
== NULL
)
2397 gdbserver_usage (stderr
);
2401 /* Consume the "--". */
2404 else if (strcmp (*next_arg
, "--debug") == 0)
2406 else if (strcmp (*next_arg
, "--remote-debug") == 0)
2408 else if (strcmp (*next_arg
, "--disable-packet") == 0)
2410 gdbserver_show_disableable (stdout
);
2413 else if (strncmp (*next_arg
,
2414 "--disable-packet=",
2415 sizeof ("--disable-packet=") - 1) == 0)
2417 char *packets
, *tok
;
2419 packets
= *next_arg
+= sizeof ("--disable-packet=") - 1;
2420 for (tok
= strtok (packets
, ",");
2422 tok
= strtok (NULL
, ","))
2424 if (strcmp ("vCont", tok
) == 0)
2425 disable_packet_vCont
= 1;
2426 else if (strcmp ("Tthread", tok
) == 0)
2427 disable_packet_Tthread
= 1;
2428 else if (strcmp ("qC", tok
) == 0)
2429 disable_packet_qC
= 1;
2430 else if (strcmp ("qfThreadInfo", tok
) == 0)
2431 disable_packet_qfThreadInfo
= 1;
2432 else if (strcmp ("threads", tok
) == 0)
2434 disable_packet_vCont
= 1;
2435 disable_packet_Tthread
= 1;
2436 disable_packet_qC
= 1;
2437 disable_packet_qfThreadInfo
= 1;
2441 fprintf (stderr
, "Don't know how to disable \"%s\".\n\n",
2443 gdbserver_show_disableable (stderr
);
2450 fprintf (stderr
, "Unknown argument: %s\n", *next_arg
);
2458 if (setjmp (toplevel
))
2460 fprintf (stderr
, "Exiting\n");
2466 if (port
== NULL
|| (!attach
&& !multi_mode
&& *next_arg
== NULL
))
2468 gdbserver_usage (stderr
);
2475 /* --attach used to come after PORT, so allow it there for
2477 if (*next_arg
!= NULL
&& strcmp (*next_arg
, "--attach") == 0)
2484 && (*next_arg
== NULL
2485 || (*next_arg
)[0] == '\0'
2486 || (pid
= strtoul (*next_arg
, &arg_end
, 0)) == 0
2488 || next_arg
[1] != NULL
))
2493 gdbserver_usage (stderr
);
2497 initialize_inferiors ();
2498 initialize_async_io ();
2500 if (target_supports_tracepoints ())
2501 initialize_tracepoint ();
2503 own_buf
= xmalloc (PBUFSIZ
+ 1);
2504 mem_buf
= xmalloc (PBUFSIZ
);
2506 if (pid
== 0 && *next_arg
!= NULL
)
2510 n
= argc
- (next_arg
- argv
);
2511 program_argv
= xmalloc (sizeof (char *) * (n
+ 1));
2512 for (i
= 0; i
< n
; i
++)
2513 program_argv
[i
] = xstrdup (next_arg
[i
]);
2514 program_argv
[i
] = NULL
;
2516 /* Wait till we are at first instruction in program. */
2517 start_inferior (program_argv
);
2519 /* We are now (hopefully) stopped at the first instruction of
2520 the target process. This assumes that the target process was
2521 successfully created. */
2525 if (attach_inferior (pid
) == -1)
2526 error ("Attaching not supported on this target");
2528 /* Otherwise succeeded. */
2532 last_status
.kind
= TARGET_WAITKIND_EXITED
;
2533 last_status
.value
.integer
= 0;
2534 last_ptid
= minus_one_ptid
;
2537 /* Don't report shared library events on the initial connection,
2538 even if some libraries are preloaded. Avoids the "stopped by
2539 shared library event" notice on gdb side. */
2542 if (setjmp (toplevel
))
2544 detach_or_kill_for_exit ();
2548 if (last_status
.kind
== TARGET_WAITKIND_EXITED
2549 || last_status
.kind
== TARGET_WAITKIND_SIGNALLED
)
2554 if (!was_running
&& !multi_mode
)
2556 fprintf (stderr
, "No program to debug. GDBserver exiting.\n");
2564 /* Be sure we're out of tfind mode. */
2565 current_traceframe
= -1;
2569 if (setjmp (toplevel
) != 0)
2571 /* An error occurred. */
2572 if (response_needed
)
2574 write_enn (own_buf
);
2579 /* Wait for events. This will return when all event sources are
2580 removed from the event loop. */
2581 start_event_loop ();
2583 /* If an exit was requested (using the "monitor exit" command),
2584 terminate now. The only other way to get here is for
2585 getpkt to fail; close the connection and reopen it at the
2590 detach_or_kill_for_exit ();
2595 "Remote side has terminated connection. "
2596 "GDBserver will reopen the connection.\n");
2600 if (disconnected_tracing
)
2602 /* Try to enable non-stop/async mode, so we we can both
2603 wait for an async socket accept, and handle async
2604 target events simultaneously. There's also no point
2605 either in having the target always stop all threads,
2606 when we're going to pass signals down without
2610 if (start_non_stop (1))
2613 /* Detaching implicitly resumes all threads; simply
2614 disconnecting does not. */
2620 "Disconnected tracing disabled; stopping trace run.\n");
2627 /* Event loop callback that handles a serial event. The first byte in
2628 the serial buffer gets us here. We expect characters to arrive at
2629 a brisk pace, so we read the rest of the packet with a blocking
2633 process_serial_event (void)
2643 int new_packet_len
= -1;
2645 /* Used to decide when gdbserver should exit in
2646 multi-mode/remote. */
2647 static int have_ran
= 0;
2650 have_ran
= target_running ();
2652 disable_async_io ();
2654 response_needed
= 0;
2655 packet_len
= getpkt (own_buf
);
2656 if (packet_len
<= 0)
2659 /* Force an event loop break. */
2662 response_needed
= 1;
2669 handle_query (own_buf
, packet_len
, &new_packet_len
);
2672 handle_general_set (own_buf
);
2675 require_running (own_buf
);
2680 pid
= strtol (&own_buf
[i
], NULL
, 16);
2684 ptid_get_pid (((struct inferior_list_entry
*) current_inferior
)->id
);
2686 if (tracing
&& disconnected_tracing
)
2688 struct thread_resume resume_info
;
2689 struct process_info
*process
= find_process_pid (pid
);
2691 if (process
== NULL
)
2693 write_enn (own_buf
);
2698 "Disconnected tracing in effect, "
2699 "leaving gdbserver attached to the process\n");
2701 /* Make sure we're in non-stop/async mode, so we we can both
2702 wait for an async socket accept, and handle async target
2703 events simultaneously. There's also no point either in
2704 having the target stop all threads, when we're going to
2705 pass signals down without informing GDB. */
2709 fprintf (stderr
, "Forcing non-stop mode\n");
2715 process
->gdb_detached
= 1;
2717 /* Detaching implicitly resumes all threads. */
2718 resume_info
.thread
= minus_one_ptid
;
2719 resume_info
.kind
= resume_continue
;
2720 resume_info
.sig
= 0;
2721 (*the_target
->resume
) (&resume_info
, 1);
2724 break; /* from switch/case */
2727 fprintf (stderr
, "Detaching from process %d\n", pid
);
2729 if (detach_inferior (pid
) != 0)
2730 write_enn (own_buf
);
2733 discard_queued_stop_replies (pid
);
2736 if (extended_protocol
)
2738 /* Treat this like a normal program exit. */
2739 last_status
.kind
= TARGET_WAITKIND_EXITED
;
2740 last_status
.value
.integer
= 0;
2741 last_ptid
= pid_to_ptid (pid
);
2743 current_inferior
= NULL
;
2750 /* If we are attached, then we can exit. Otherwise, we
2751 need to hang around doing nothing, until the child is
2753 for_each_inferior (&all_processes
,
2754 join_inferiors_callback
);
2760 extended_protocol
= 1;
2764 handle_status (own_buf
);
2767 if (own_buf
[1] == 'c' || own_buf
[1] == 'g' || own_buf
[1] == 's')
2769 ptid_t gdb_id
, thread_id
;
2772 require_running (own_buf
);
2774 gdb_id
= read_ptid (&own_buf
[2], NULL
);
2776 pid
= ptid_get_pid (gdb_id
);
2778 if (ptid_equal (gdb_id
, null_ptid
)
2779 || ptid_equal (gdb_id
, minus_one_ptid
))
2780 thread_id
= null_ptid
;
2782 && ptid_equal (pid_to_ptid (pid
),
2785 struct thread_info
*thread
=
2786 (struct thread_info
*) find_inferior (&all_threads
,
2791 write_enn (own_buf
);
2795 thread_id
= ((struct inferior_list_entry
*)thread
)->id
;
2799 thread_id
= gdb_id_to_thread_id (gdb_id
);
2800 if (ptid_equal (thread_id
, null_ptid
))
2802 write_enn (own_buf
);
2807 if (own_buf
[1] == 'g')
2809 if (ptid_equal (thread_id
, null_ptid
))
2811 /* GDB is telling us to choose any thread. Check if
2812 the currently selected thread is still valid. If
2813 it is not, select the first available. */
2814 struct thread_info
*thread
=
2815 (struct thread_info
*) find_inferior_id (&all_threads
,
2818 thread_id
= all_threads
.head
->id
;
2821 general_thread
= thread_id
;
2822 set_desired_inferior (1);
2824 else if (own_buf
[1] == 'c')
2825 cont_thread
= thread_id
;
2826 else if (own_buf
[1] == 's')
2827 step_thread
= thread_id
;
2833 /* Silently ignore it so that gdb can extend the protocol
2834 without compatibility headaches. */
2839 require_running (own_buf
);
2840 if (current_traceframe
>= 0)
2842 struct regcache
*regcache
= new_register_cache ();
2844 if (fetch_traceframe_registers (current_traceframe
,
2846 registers_to_string (regcache
, own_buf
);
2848 write_enn (own_buf
);
2849 free_register_cache (regcache
);
2853 struct regcache
*regcache
;
2855 set_desired_inferior (1);
2856 regcache
= get_thread_regcache (current_inferior
, 1);
2857 registers_to_string (regcache
, own_buf
);
2861 require_running (own_buf
);
2862 if (current_traceframe
>= 0)
2863 write_enn (own_buf
);
2866 struct regcache
*regcache
;
2868 set_desired_inferior (1);
2869 regcache
= get_thread_regcache (current_inferior
, 1);
2870 registers_from_string (regcache
, &own_buf
[1]);
2875 require_running (own_buf
);
2876 decode_m_packet (&own_buf
[1], &mem_addr
, &len
);
2877 if (read_memory (mem_addr
, mem_buf
, len
) == 0)
2878 convert_int_to_ascii (mem_buf
, own_buf
, len
);
2880 write_enn (own_buf
);
2883 require_running (own_buf
);
2884 decode_M_packet (&own_buf
[1], &mem_addr
, &len
, &mem_buf
);
2885 if (write_memory (mem_addr
, mem_buf
, len
) == 0)
2888 write_enn (own_buf
);
2891 require_running (own_buf
);
2892 if (decode_X_packet (&own_buf
[1], packet_len
- 1,
2893 &mem_addr
, &len
, &mem_buf
) < 0
2894 || write_memory (mem_addr
, mem_buf
, len
) != 0)
2895 write_enn (own_buf
);
2900 require_running (own_buf
);
2901 convert_ascii_to_int (own_buf
+ 1, &sig
, 1);
2902 if (target_signal_to_host_p (sig
))
2903 signal
= target_signal_to_host (sig
);
2906 myresume (own_buf
, 0, signal
);
2909 require_running (own_buf
);
2910 convert_ascii_to_int (own_buf
+ 1, &sig
, 1);
2911 if (target_signal_to_host_p (sig
))
2912 signal
= target_signal_to_host (sig
);
2915 myresume (own_buf
, 1, signal
);
2918 require_running (own_buf
);
2920 myresume (own_buf
, 0, signal
);
2923 require_running (own_buf
);
2925 myresume (own_buf
, 1, signal
);
2927 case 'Z': /* insert_ ... */
2929 case 'z': /* remove_ ... */
2933 CORE_ADDR addr
= strtoul (&own_buf
[3], &lenptr
, 16);
2934 int len
= strtol (lenptr
+ 1, &dataptr
, 16);
2935 char type
= own_buf
[1];
2937 const int insert
= ch
== 'Z';
2939 /* Default to unrecognized/unsupported. */
2943 case '0': /* software-breakpoint */
2944 case '1': /* hardware-breakpoint */
2945 case '2': /* write watchpoint */
2946 case '3': /* read watchpoint */
2947 case '4': /* access watchpoint */
2948 require_running (own_buf
);
2949 if (insert
&& the_target
->insert_point
!= NULL
)
2950 res
= (*the_target
->insert_point
) (type
, addr
, len
);
2951 else if (!insert
&& the_target
->remove_point
!= NULL
)
2952 res
= (*the_target
->remove_point
) (type
, addr
, len
);
2964 write_enn (own_buf
);
2968 response_needed
= 0;
2969 if (!target_running ())
2970 /* The packet we received doesn't make sense - but we can't
2971 reply to it, either. */
2974 fprintf (stderr
, "Killing all inferiors\n");
2975 for_each_inferior (&all_processes
, kill_inferior_callback
);
2977 /* When using the extended protocol, we wait with no program
2978 running. The traditional protocol will exit instead. */
2979 if (extended_protocol
)
2981 last_status
.kind
= TARGET_WAITKIND_EXITED
;
2982 last_status
.value
.sig
= TARGET_SIGNAL_KILL
;
2990 ptid_t gdb_id
, thread_id
;
2992 require_running (own_buf
);
2994 gdb_id
= read_ptid (&own_buf
[1], NULL
);
2995 thread_id
= gdb_id_to_thread_id (gdb_id
);
2996 if (ptid_equal (thread_id
, null_ptid
))
2998 write_enn (own_buf
);
3002 if (mythread_alive (thread_id
))
3005 write_enn (own_buf
);
3009 response_needed
= 0;
3011 /* Restarting the inferior is only supported in the extended
3013 if (extended_protocol
)
3015 if (target_running ())
3016 for_each_inferior (&all_processes
,
3017 kill_inferior_callback
);
3018 fprintf (stderr
, "GDBserver restarting\n");
3020 /* Wait till we are at 1st instruction in prog. */
3021 if (program_argv
!= NULL
)
3022 start_inferior (program_argv
);
3025 last_status
.kind
= TARGET_WAITKIND_EXITED
;
3026 last_status
.value
.sig
= TARGET_SIGNAL_KILL
;
3032 /* It is a request we don't understand. Respond with an
3033 empty packet so that gdb knows that we don't support this
3039 /* Extended (long) request. */
3040 handle_v_requests (own_buf
, packet_len
, &new_packet_len
);
3044 /* It is a request we don't understand. Respond with an empty
3045 packet so that gdb knows that we don't support this
3051 if (new_packet_len
!= -1)
3052 putpkt_binary (own_buf
, new_packet_len
);
3056 response_needed
= 0;
3058 if (!extended_protocol
&& have_ran
&& !target_running ())
3060 /* In non-stop, defer exiting until GDB had a chance to query
3061 the whole vStopped list (until it gets an OK). */
3064 fprintf (stderr
, "GDBserver exiting\n");
3076 /* Event-loop callback for serial events. */
3079 handle_serial_event (int err
, gdb_client_data client_data
)
3082 fprintf (stderr
, "handling possible serial event\n");
3084 /* Really handle it. */
3085 if (process_serial_event () < 0)
3088 /* Be sure to not change the selected inferior behind GDB's back.
3089 Important in the non-stop mode asynchronous protocol. */
3090 set_desired_inferior (1);
3095 /* Event-loop callback for target events. */
3098 handle_target_event (int err
, gdb_client_data client_data
)
3101 fprintf (stderr
, "handling possible target event\n");
3103 last_ptid
= mywait (minus_one_ptid
, &last_status
,
3106 if (last_status
.kind
!= TARGET_WAITKIND_IGNORE
)
3108 int pid
= ptid_get_pid (last_ptid
);
3109 struct process_info
*process
= find_process_pid (pid
);
3110 int forward_event
= !gdb_connected () || process
->gdb_detached
;
3112 if (last_status
.kind
== TARGET_WAITKIND_EXITED
3113 || last_status
.kind
== TARGET_WAITKIND_SIGNALLED
)
3115 mark_breakpoints_out (process
);
3116 mourn_inferior (process
);
3121 if (!target_running ())
3123 /* The last process exited. We're done. */
3127 if (last_status
.kind
== TARGET_WAITKIND_STOPPED
)
3129 /* A thread stopped with a signal, but gdb isn't
3130 connected to handle it. Pass it down to the
3131 inferior, as if it wasn't being traced. */
3132 struct thread_resume resume_info
;
3136 "GDB not connected; forwarding event %d for [%s]\n",
3137 (int) last_status
.kind
,
3138 target_pid_to_str (last_ptid
));
3140 resume_info
.thread
= last_ptid
;
3141 resume_info
.kind
= resume_continue
;
3142 resume_info
.sig
= last_status
.value
.sig
;
3143 (*the_target
->resume
) (&resume_info
, 1);
3145 else if (debug_threads
)
3146 fprintf (stderr
, "GDB not connected; ignoring event %d for [%s]\n",
3147 (int) last_status
.kind
,
3148 target_pid_to_str (last_ptid
));
3152 /* Something interesting. Tell GDB about it. */
3153 push_event (last_ptid
, &last_status
);
3157 /* Be sure to not change the selected inferior behind GDB's back.
3158 Important in the non-stop mode asynchronous protocol. */
3159 set_desired_inferior (1);