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 strcpy (own_buf
, paddress(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 strcpy (own_buf
, paddress(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 ();
1783 if (last_status
.kind
== TARGET_WAITKIND_EXITED
1784 || last_status
.kind
== TARGET_WAITKIND_SIGNALLED
)
1785 mourn_inferior (find_process_pid (ptid_get_pid (last_ptid
)));
1790 write_enn (own_buf
);
1795 /* Attach to a new program. Return 1 if successful, 0 if failure. */
1797 handle_v_attach (char *own_buf
)
1801 pid
= strtol (own_buf
+ 8, NULL
, 16);
1802 if (pid
!= 0 && attach_inferior (pid
) == 0)
1804 /* Don't report shared library events after attaching, even if
1805 some libraries are preloaded. GDB will always poll the
1806 library list. Avoids the "stopped by shared library event"
1807 notice on the GDB side. */
1812 /* In non-stop, we don't send a resume reply. Stop events
1813 will follow up using the normal notification
1818 prepare_resume_reply (own_buf
, last_ptid
, &last_status
);
1824 write_enn (own_buf
);
1829 /* Run a new program. Return 1 if successful, 0 if failure. */
1831 handle_v_run (char *own_buf
)
1833 char *p
, *next_p
, **new_argv
;
1837 for (p
= own_buf
+ strlen ("vRun;"); p
&& *p
; p
= strchr (p
, ';'))
1843 new_argv
= calloc (new_argc
+ 2, sizeof (char *));
1844 if (new_argv
== NULL
)
1846 write_enn (own_buf
);
1851 for (p
= own_buf
+ strlen ("vRun;"); *p
; p
= next_p
)
1853 next_p
= strchr (p
, ';');
1855 next_p
= p
+ strlen (p
);
1857 if (i
== 0 && p
== next_p
)
1861 /* FIXME: Fail request if out of memory instead of dying. */
1862 new_argv
[i
] = xmalloc (1 + (next_p
- p
) / 2);
1863 unhexify (new_argv
[i
], p
, (next_p
- p
) / 2);
1864 new_argv
[i
][(next_p
- p
) / 2] = '\0';
1873 if (new_argv
[0] == NULL
)
1875 /* GDB didn't specify a program to run. Use the program from the
1876 last run with the new argument list. */
1878 if (program_argv
== NULL
)
1880 /* FIXME: new_argv memory leak */
1881 write_enn (own_buf
);
1885 new_argv
[0] = strdup (program_argv
[0]);
1886 if (new_argv
[0] == NULL
)
1888 /* FIXME: new_argv memory leak */
1889 write_enn (own_buf
);
1894 /* Free the old argv and install the new one. */
1895 freeargv (program_argv
);
1896 program_argv
= new_argv
;
1898 start_inferior (program_argv
);
1899 if (last_status
.kind
== TARGET_WAITKIND_STOPPED
)
1901 prepare_resume_reply (own_buf
, last_ptid
, &last_status
);
1903 /* In non-stop, sending a resume reply doesn't set the general
1904 thread, but GDB assumes a vRun sets it (this is so GDB can
1905 query which is the main thread of the new inferior. */
1907 general_thread
= last_ptid
;
1913 write_enn (own_buf
);
1918 /* Kill process. Return 1 if successful, 0 if failure. */
1920 handle_v_kill (char *own_buf
)
1923 char *p
= &own_buf
[6];
1925 pid
= strtol (p
, NULL
, 16);
1928 if (pid
!= 0 && kill_inferior (pid
) == 0)
1930 last_status
.kind
= TARGET_WAITKIND_SIGNALLED
;
1931 last_status
.value
.sig
= TARGET_SIGNAL_KILL
;
1932 last_ptid
= pid_to_ptid (pid
);
1933 discard_queued_stop_replies (pid
);
1939 write_enn (own_buf
);
1944 /* Handle a 'vStopped' packet. */
1946 handle_v_stopped (char *own_buf
)
1948 /* If we're waiting for GDB to acknowledge a pending stop reply,
1949 consider that done. */
1952 struct vstop_notif
*head
;
1955 fprintf (stderr
, "vStopped: acking %s\n",
1956 target_pid_to_str (notif_queue
->ptid
));
1959 notif_queue
= notif_queue
->next
;
1963 /* Push another stop reply, or if there are no more left, an OK. */
1964 send_next_stop_reply (own_buf
);
1967 /* Handle all of the extended 'v' packets. */
1969 handle_v_requests (char *own_buf
, int packet_len
, int *new_packet_len
)
1971 if (!disable_packet_vCont
)
1973 if (strncmp (own_buf
, "vCont;", 6) == 0)
1975 require_running (own_buf
);
1976 handle_v_cont (own_buf
);
1980 if (strncmp (own_buf
, "vCont?", 6) == 0)
1982 strcpy (own_buf
, "vCont;c;C;s;S;t");
1987 if (strncmp (own_buf
, "vFile:", 6) == 0
1988 && handle_vFile (own_buf
, packet_len
, new_packet_len
))
1991 if (strncmp (own_buf
, "vAttach;", 8) == 0)
1993 if (!multi_process
&& target_running ())
1995 fprintf (stderr
, "Already debugging a process\n");
1996 write_enn (own_buf
);
1999 handle_v_attach (own_buf
);
2003 if (strncmp (own_buf
, "vRun;", 5) == 0)
2005 if (!multi_process
&& target_running ())
2007 fprintf (stderr
, "Already debugging a process\n");
2008 write_enn (own_buf
);
2011 handle_v_run (own_buf
);
2015 if (strncmp (own_buf
, "vKill;", 6) == 0)
2017 if (!target_running ())
2019 fprintf (stderr
, "No process to kill\n");
2020 write_enn (own_buf
);
2023 handle_v_kill (own_buf
);
2027 if (strncmp (own_buf
, "vStopped", 8) == 0)
2029 handle_v_stopped (own_buf
);
2033 /* Otherwise we didn't know what packet it was. Say we didn't
2039 /* Resume inferior and wait for another event. In non-stop mode,
2040 don't really wait here, but return immediatelly to the event
2043 myresume (char *own_buf
, int step
, int sig
)
2045 struct thread_resume resume_info
[2];
2047 int valid_cont_thread
;
2049 set_desired_inferior (0);
2051 valid_cont_thread
= (!ptid_equal (cont_thread
, null_ptid
)
2052 && !ptid_equal (cont_thread
, minus_one_ptid
));
2054 if (step
|| sig
|| valid_cont_thread
)
2056 resume_info
[0].thread
2057 = ((struct inferior_list_entry
*) current_inferior
)->id
;
2059 resume_info
[0].kind
= resume_step
;
2061 resume_info
[0].kind
= resume_continue
;
2062 resume_info
[0].sig
= sig
;
2066 if (!valid_cont_thread
)
2068 resume_info
[n
].thread
= minus_one_ptid
;
2069 resume_info
[n
].kind
= resume_continue
;
2070 resume_info
[n
].sig
= 0;
2077 (*the_target
->resume
) (resume_info
, n
);
2083 last_ptid
= mywait (minus_one_ptid
, &last_status
, 0, 1);
2084 prepare_resume_reply (own_buf
, last_ptid
, &last_status
);
2085 disable_async_io ();
2087 if (last_status
.kind
== TARGET_WAITKIND_EXITED
2088 || last_status
.kind
== TARGET_WAITKIND_SIGNALLED
)
2089 mourn_inferior (find_process_pid (ptid_get_pid (last_ptid
)));
2093 /* Callback for for_each_inferior. Make a new stop reply for each
2097 queue_stop_reply_callback (struct inferior_list_entry
*entry
, void *arg
)
2099 struct thread_info
*thread
= (struct thread_info
*) entry
;
2101 /* For now, assume targets that don't have this callback also don't
2102 manage the thread's last_status field. */
2103 if (the_target
->thread_stopped
== NULL
)
2105 struct target_waitstatus status
;
2107 status
.kind
= TARGET_WAITKIND_STOPPED
;
2108 status
.value
.sig
= TARGET_SIGNAL_TRAP
;
2110 /* Pass the last stop reply back to GDB, but don't notify
2112 queue_stop_reply (entry
->id
, &thread
->last_status
);
2116 if (thread_stopped (thread
))
2119 fprintf (stderr
, "Reporting thread %s as already stopped with %s\n",
2120 target_pid_to_str (entry
->id
),
2121 target_waitstatus_to_string (&thread
->last_status
));
2123 /* Pass the last stop reply back to GDB, but don't notify
2125 queue_stop_reply (entry
->id
, &thread
->last_status
);
2132 /* Set this inferior LWP's state as "want-stopped". We won't resume
2133 this LWP until the client gives us another action for it. */
2136 gdb_wants_thread_stopped (struct inferior_list_entry
*entry
)
2138 struct thread_info
*thread
= (struct thread_info
*) entry
;
2140 thread
->last_resume_kind
= resume_stop
;
2142 if (thread
->last_status
.kind
== TARGET_WAITKIND_IGNORE
)
2144 thread
->last_status
.kind
= TARGET_WAITKIND_STOPPED
;
2145 thread
->last_status
.value
.sig
= TARGET_SIGNAL_0
;
2149 /* Set all threads' states as "want-stopped". */
2152 gdb_wants_all_threads_stopped (void)
2154 for_each_inferior (&all_threads
, gdb_wants_thread_stopped
);
2157 /* Clear the gdb_detached flag of every process. */
2160 gdb_reattached_process (struct inferior_list_entry
*entry
)
2162 struct process_info
*process
= (struct process_info
*) entry
;
2164 process
->gdb_detached
= 0;
2167 /* Status handler for the '?' packet. */
2170 handle_status (char *own_buf
)
2172 /* GDB is connected, don't forward events to the target anymore. */
2173 for_each_inferior (&all_processes
, gdb_reattached_process
);
2175 /* In non-stop mode, we must send a stop reply for each stopped
2176 thread. In all-stop mode, just send one for the first stopped
2181 discard_queued_stop_replies (-1);
2182 find_inferior (&all_threads
, queue_stop_reply_callback
, NULL
);
2184 /* The first is sent immediatly. OK is sent if there is no
2185 stopped thread, which is the same handling of the vStopped
2186 packet (by design). */
2187 send_next_stop_reply (own_buf
);
2192 stabilize_threads ();
2193 gdb_wants_all_threads_stopped ();
2195 if (all_threads
.head
)
2197 struct target_waitstatus status
;
2199 status
.kind
= TARGET_WAITKIND_STOPPED
;
2200 status
.value
.sig
= TARGET_SIGNAL_TRAP
;
2201 prepare_resume_reply (own_buf
,
2202 all_threads
.head
->id
, &status
);
2205 strcpy (own_buf
, "W00");
2210 gdbserver_version (void)
2212 printf ("GNU gdbserver %s%s\n"
2213 "Copyright (C) 2010 Free Software Foundation, Inc.\n"
2214 "gdbserver is free software, covered by the GNU General Public License.\n"
2215 "This gdbserver was configured as \"%s\"\n",
2216 PKGVERSION
, version
, host_name
);
2220 gdbserver_usage (FILE *stream
)
2222 fprintf (stream
, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n"
2223 "\tgdbserver [OPTIONS] --attach COMM PID\n"
2224 "\tgdbserver [OPTIONS] --multi COMM\n"
2226 "COMM may either be a tty device (for serial debugging), or \n"
2227 "HOST:PORT to listen for a TCP connection.\n"
2230 " --debug Enable general debugging output.\n"
2231 " --remote-debug Enable remote protocol debugging output.\n"
2232 " --version Display version information and exit.\n"
2233 " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n");
2234 if (REPORT_BUGS_TO
[0] && stream
== stdout
)
2235 fprintf (stream
, "Report bugs to \"%s\".\n", REPORT_BUGS_TO
);
2239 gdbserver_show_disableable (FILE *stream
)
2241 fprintf (stream
, "Disableable packets:\n"
2242 " vCont \tAll vCont packets\n"
2243 " qC \tQuerying the current thread\n"
2244 " qfThreadInfo\tThread listing\n"
2245 " Tthread \tPassing the thread specifier in the T stop reply packet\n"
2246 " threads \tAll of the above\n");
2250 #undef require_running
2251 #define require_running(BUF) \
2252 if (!target_running ()) \
2259 first_thread_of (struct inferior_list_entry
*entry
, void *args
)
2261 int pid
= * (int *) args
;
2263 if (ptid_get_pid (entry
->id
) == pid
)
2270 kill_inferior_callback (struct inferior_list_entry
*entry
)
2272 struct process_info
*process
= (struct process_info
*) entry
;
2273 int pid
= ptid_get_pid (process
->head
.id
);
2275 kill_inferior (pid
);
2276 discard_queued_stop_replies (pid
);
2279 /* Callback for for_each_inferior to detach or kill the inferior,
2280 depending on whether we attached to it or not.
2281 We inform the user whether we're detaching or killing the process
2282 as this is only called when gdbserver is about to exit. */
2285 detach_or_kill_inferior_callback (struct inferior_list_entry
*entry
)
2287 struct process_info
*process
= (struct process_info
*) entry
;
2288 int pid
= ptid_get_pid (process
->head
.id
);
2290 if (process
->attached
)
2291 detach_inferior (pid
);
2293 kill_inferior (pid
);
2295 discard_queued_stop_replies (pid
);
2298 /* for_each_inferior callback for detach_or_kill_for_exit to print
2299 the pids of started inferiors. */
2302 print_started_pid (struct inferior_list_entry
*entry
)
2304 struct process_info
*process
= (struct process_info
*) entry
;
2306 if (! process
->attached
)
2308 int pid
= ptid_get_pid (process
->head
.id
);
2309 fprintf (stderr
, " %d", pid
);
2313 /* for_each_inferior callback for detach_or_kill_for_exit to print
2314 the pids of attached inferiors. */
2317 print_attached_pid (struct inferior_list_entry
*entry
)
2319 struct process_info
*process
= (struct process_info
*) entry
;
2321 if (process
->attached
)
2323 int pid
= ptid_get_pid (process
->head
.id
);
2324 fprintf (stderr
, " %d", pid
);
2328 /* Call this when exiting gdbserver with possible inferiors that need
2329 to be killed or detached from. */
2332 detach_or_kill_for_exit (void)
2334 /* First print a list of the inferiors we will be killing/detaching.
2335 This is to assist the user, for example, in case the inferior unexpectedly
2336 dies after we exit: did we screw up or did the inferior exit on its own?
2337 Having this info will save some head-scratching. */
2339 if (have_started_inferiors_p ())
2341 fprintf (stderr
, "Killing process(es):");
2342 for_each_inferior (&all_processes
, print_started_pid
);
2343 fprintf (stderr
, "\n");
2345 if (have_attached_inferiors_p ())
2347 fprintf (stderr
, "Detaching process(es):");
2348 for_each_inferior (&all_processes
, print_attached_pid
);
2349 fprintf (stderr
, "\n");
2352 /* Now we can kill or detach the inferiors. */
2354 for_each_inferior (&all_processes
, detach_or_kill_inferior_callback
);
2358 join_inferiors_callback (struct inferior_list_entry
*entry
)
2360 struct process_info
*process
= (struct process_info
*) entry
;
2362 /* If we are attached, then we can exit. Otherwise, we need to hang
2363 around doing nothing, until the child is gone. */
2364 if (!process
->attached
)
2365 join_inferior (ptid_get_pid (process
->head
.id
));
2369 main (int argc
, char *argv
[])
2373 char *arg_end
, *port
;
2374 char **next_arg
= &argv
[1];
2379 while (*next_arg
!= NULL
&& **next_arg
== '-')
2381 if (strcmp (*next_arg
, "--version") == 0)
2383 gdbserver_version ();
2386 else if (strcmp (*next_arg
, "--help") == 0)
2388 gdbserver_usage (stdout
);
2391 else if (strcmp (*next_arg
, "--attach") == 0)
2393 else if (strcmp (*next_arg
, "--multi") == 0)
2395 else if (strcmp (*next_arg
, "--wrapper") == 0)
2399 wrapper_argv
= next_arg
;
2400 while (*next_arg
!= NULL
&& strcmp (*next_arg
, "--") != 0)
2403 if (next_arg
== wrapper_argv
|| *next_arg
== NULL
)
2405 gdbserver_usage (stderr
);
2409 /* Consume the "--". */
2412 else if (strcmp (*next_arg
, "--debug") == 0)
2414 else if (strcmp (*next_arg
, "--remote-debug") == 0)
2416 else if (strcmp (*next_arg
, "--disable-packet") == 0)
2418 gdbserver_show_disableable (stdout
);
2421 else if (strncmp (*next_arg
,
2422 "--disable-packet=",
2423 sizeof ("--disable-packet=") - 1) == 0)
2425 char *packets
, *tok
;
2427 packets
= *next_arg
+= sizeof ("--disable-packet=") - 1;
2428 for (tok
= strtok (packets
, ",");
2430 tok
= strtok (NULL
, ","))
2432 if (strcmp ("vCont", tok
) == 0)
2433 disable_packet_vCont
= 1;
2434 else if (strcmp ("Tthread", tok
) == 0)
2435 disable_packet_Tthread
= 1;
2436 else if (strcmp ("qC", tok
) == 0)
2437 disable_packet_qC
= 1;
2438 else if (strcmp ("qfThreadInfo", tok
) == 0)
2439 disable_packet_qfThreadInfo
= 1;
2440 else if (strcmp ("threads", tok
) == 0)
2442 disable_packet_vCont
= 1;
2443 disable_packet_Tthread
= 1;
2444 disable_packet_qC
= 1;
2445 disable_packet_qfThreadInfo
= 1;
2449 fprintf (stderr
, "Don't know how to disable \"%s\".\n\n",
2451 gdbserver_show_disableable (stderr
);
2458 fprintf (stderr
, "Unknown argument: %s\n", *next_arg
);
2466 if (setjmp (toplevel
))
2468 fprintf (stderr
, "Exiting\n");
2474 if (port
== NULL
|| (!attach
&& !multi_mode
&& *next_arg
== NULL
))
2476 gdbserver_usage (stderr
);
2483 /* --attach used to come after PORT, so allow it there for
2485 if (*next_arg
!= NULL
&& strcmp (*next_arg
, "--attach") == 0)
2492 && (*next_arg
== NULL
2493 || (*next_arg
)[0] == '\0'
2494 || (pid
= strtoul (*next_arg
, &arg_end
, 0)) == 0
2496 || next_arg
[1] != NULL
))
2501 gdbserver_usage (stderr
);
2505 initialize_inferiors ();
2506 initialize_async_io ();
2508 if (target_supports_tracepoints ())
2509 initialize_tracepoint ();
2511 own_buf
= xmalloc (PBUFSIZ
+ 1);
2512 mem_buf
= xmalloc (PBUFSIZ
);
2514 if (pid
== 0 && *next_arg
!= NULL
)
2518 n
= argc
- (next_arg
- argv
);
2519 program_argv
= xmalloc (sizeof (char *) * (n
+ 1));
2520 for (i
= 0; i
< n
; i
++)
2521 program_argv
[i
] = xstrdup (next_arg
[i
]);
2522 program_argv
[i
] = NULL
;
2524 /* Wait till we are at first instruction in program. */
2525 start_inferior (program_argv
);
2527 /* We are now (hopefully) stopped at the first instruction of
2528 the target process. This assumes that the target process was
2529 successfully created. */
2533 if (attach_inferior (pid
) == -1)
2534 error ("Attaching not supported on this target");
2536 /* Otherwise succeeded. */
2540 last_status
.kind
= TARGET_WAITKIND_EXITED
;
2541 last_status
.value
.integer
= 0;
2542 last_ptid
= minus_one_ptid
;
2545 /* Don't report shared library events on the initial connection,
2546 even if some libraries are preloaded. Avoids the "stopped by
2547 shared library event" notice on gdb side. */
2550 if (setjmp (toplevel
))
2552 detach_or_kill_for_exit ();
2556 if (last_status
.kind
== TARGET_WAITKIND_EXITED
2557 || last_status
.kind
== TARGET_WAITKIND_SIGNALLED
)
2562 if (!was_running
&& !multi_mode
)
2564 fprintf (stderr
, "No program to debug. GDBserver exiting.\n");
2572 /* Be sure we're out of tfind mode. */
2573 current_traceframe
= -1;
2577 if (setjmp (toplevel
) != 0)
2579 /* An error occurred. */
2580 if (response_needed
)
2582 write_enn (own_buf
);
2587 /* Wait for events. This will return when all event sources are
2588 removed from the event loop. */
2589 start_event_loop ();
2591 /* If an exit was requested (using the "monitor exit" command),
2592 terminate now. The only other way to get here is for
2593 getpkt to fail; close the connection and reopen it at the
2598 detach_or_kill_for_exit ();
2603 "Remote side has terminated connection. "
2604 "GDBserver will reopen the connection.\n");
2608 if (disconnected_tracing
)
2610 /* Try to enable non-stop/async mode, so we we can both
2611 wait for an async socket accept, and handle async
2612 target events simultaneously. There's also no point
2613 either in having the target always stop all threads,
2614 when we're going to pass signals down without
2618 if (start_non_stop (1))
2621 /* Detaching implicitly resumes all threads; simply
2622 disconnecting does not. */
2628 "Disconnected tracing disabled; stopping trace run.\n");
2635 /* Event loop callback that handles a serial event. The first byte in
2636 the serial buffer gets us here. We expect characters to arrive at
2637 a brisk pace, so we read the rest of the packet with a blocking
2641 process_serial_event (void)
2651 int new_packet_len
= -1;
2653 /* Used to decide when gdbserver should exit in
2654 multi-mode/remote. */
2655 static int have_ran
= 0;
2658 have_ran
= target_running ();
2660 disable_async_io ();
2662 response_needed
= 0;
2663 packet_len
= getpkt (own_buf
);
2664 if (packet_len
<= 0)
2667 /* Force an event loop break. */
2670 response_needed
= 1;
2677 handle_query (own_buf
, packet_len
, &new_packet_len
);
2680 handle_general_set (own_buf
);
2683 require_running (own_buf
);
2688 pid
= strtol (&own_buf
[i
], NULL
, 16);
2692 ptid_get_pid (((struct inferior_list_entry
*) current_inferior
)->id
);
2694 if (tracing
&& disconnected_tracing
)
2696 struct thread_resume resume_info
;
2697 struct process_info
*process
= find_process_pid (pid
);
2699 if (process
== NULL
)
2701 write_enn (own_buf
);
2706 "Disconnected tracing in effect, "
2707 "leaving gdbserver attached to the process\n");
2709 /* Make sure we're in non-stop/async mode, so we we can both
2710 wait for an async socket accept, and handle async target
2711 events simultaneously. There's also no point either in
2712 having the target stop all threads, when we're going to
2713 pass signals down without informing GDB. */
2717 fprintf (stderr
, "Forcing non-stop mode\n");
2723 process
->gdb_detached
= 1;
2725 /* Detaching implicitly resumes all threads. */
2726 resume_info
.thread
= minus_one_ptid
;
2727 resume_info
.kind
= resume_continue
;
2728 resume_info
.sig
= 0;
2729 (*the_target
->resume
) (&resume_info
, 1);
2732 break; /* from switch/case */
2735 fprintf (stderr
, "Detaching from process %d\n", pid
);
2737 if (detach_inferior (pid
) != 0)
2738 write_enn (own_buf
);
2741 discard_queued_stop_replies (pid
);
2744 if (extended_protocol
)
2746 /* Treat this like a normal program exit. */
2747 last_status
.kind
= TARGET_WAITKIND_EXITED
;
2748 last_status
.value
.integer
= 0;
2749 last_ptid
= pid_to_ptid (pid
);
2751 current_inferior
= NULL
;
2758 /* If we are attached, then we can exit. Otherwise, we
2759 need to hang around doing nothing, until the child is
2761 for_each_inferior (&all_processes
,
2762 join_inferiors_callback
);
2768 extended_protocol
= 1;
2772 handle_status (own_buf
);
2775 if (own_buf
[1] == 'c' || own_buf
[1] == 'g' || own_buf
[1] == 's')
2777 ptid_t gdb_id
, thread_id
;
2780 require_running (own_buf
);
2782 gdb_id
= read_ptid (&own_buf
[2], NULL
);
2784 pid
= ptid_get_pid (gdb_id
);
2786 if (ptid_equal (gdb_id
, null_ptid
)
2787 || ptid_equal (gdb_id
, minus_one_ptid
))
2788 thread_id
= null_ptid
;
2790 && ptid_equal (pid_to_ptid (pid
),
2793 struct thread_info
*thread
=
2794 (struct thread_info
*) find_inferior (&all_threads
,
2799 write_enn (own_buf
);
2803 thread_id
= ((struct inferior_list_entry
*)thread
)->id
;
2807 thread_id
= gdb_id_to_thread_id (gdb_id
);
2808 if (ptid_equal (thread_id
, null_ptid
))
2810 write_enn (own_buf
);
2815 if (own_buf
[1] == 'g')
2817 if (ptid_equal (thread_id
, null_ptid
))
2819 /* GDB is telling us to choose any thread. Check if
2820 the currently selected thread is still valid. If
2821 it is not, select the first available. */
2822 struct thread_info
*thread
=
2823 (struct thread_info
*) find_inferior_id (&all_threads
,
2826 thread_id
= all_threads
.head
->id
;
2829 general_thread
= thread_id
;
2830 set_desired_inferior (1);
2832 else if (own_buf
[1] == 'c')
2833 cont_thread
= thread_id
;
2834 else if (own_buf
[1] == 's')
2835 step_thread
= thread_id
;
2841 /* Silently ignore it so that gdb can extend the protocol
2842 without compatibility headaches. */
2847 require_running (own_buf
);
2848 if (current_traceframe
>= 0)
2850 struct regcache
*regcache
= new_register_cache ();
2852 if (fetch_traceframe_registers (current_traceframe
,
2854 registers_to_string (regcache
, own_buf
);
2856 write_enn (own_buf
);
2857 free_register_cache (regcache
);
2861 struct regcache
*regcache
;
2863 set_desired_inferior (1);
2864 regcache
= get_thread_regcache (current_inferior
, 1);
2865 registers_to_string (regcache
, own_buf
);
2869 require_running (own_buf
);
2870 if (current_traceframe
>= 0)
2871 write_enn (own_buf
);
2874 struct regcache
*regcache
;
2876 set_desired_inferior (1);
2877 regcache
= get_thread_regcache (current_inferior
, 1);
2878 registers_from_string (regcache
, &own_buf
[1]);
2883 require_running (own_buf
);
2884 decode_m_packet (&own_buf
[1], &mem_addr
, &len
);
2885 if (read_memory (mem_addr
, mem_buf
, len
) == 0)
2886 convert_int_to_ascii (mem_buf
, own_buf
, len
);
2888 write_enn (own_buf
);
2891 require_running (own_buf
);
2892 decode_M_packet (&own_buf
[1], &mem_addr
, &len
, &mem_buf
);
2893 if (write_memory (mem_addr
, mem_buf
, len
) == 0)
2896 write_enn (own_buf
);
2899 require_running (own_buf
);
2900 if (decode_X_packet (&own_buf
[1], packet_len
- 1,
2901 &mem_addr
, &len
, &mem_buf
) < 0
2902 || write_memory (mem_addr
, mem_buf
, len
) != 0)
2903 write_enn (own_buf
);
2908 require_running (own_buf
);
2909 convert_ascii_to_int (own_buf
+ 1, &sig
, 1);
2910 if (target_signal_to_host_p (sig
))
2911 signal
= target_signal_to_host (sig
);
2914 myresume (own_buf
, 0, signal
);
2917 require_running (own_buf
);
2918 convert_ascii_to_int (own_buf
+ 1, &sig
, 1);
2919 if (target_signal_to_host_p (sig
))
2920 signal
= target_signal_to_host (sig
);
2923 myresume (own_buf
, 1, signal
);
2926 require_running (own_buf
);
2928 myresume (own_buf
, 0, signal
);
2931 require_running (own_buf
);
2933 myresume (own_buf
, 1, signal
);
2935 case 'Z': /* insert_ ... */
2937 case 'z': /* remove_ ... */
2941 CORE_ADDR addr
= strtoul (&own_buf
[3], &lenptr
, 16);
2942 int len
= strtol (lenptr
+ 1, &dataptr
, 16);
2943 char type
= own_buf
[1];
2945 const int insert
= ch
== 'Z';
2947 /* Default to unrecognized/unsupported. */
2951 case '0': /* software-breakpoint */
2952 case '1': /* hardware-breakpoint */
2953 case '2': /* write watchpoint */
2954 case '3': /* read watchpoint */
2955 case '4': /* access watchpoint */
2956 require_running (own_buf
);
2957 if (insert
&& the_target
->insert_point
!= NULL
)
2958 res
= (*the_target
->insert_point
) (type
, addr
, len
);
2959 else if (!insert
&& the_target
->remove_point
!= NULL
)
2960 res
= (*the_target
->remove_point
) (type
, addr
, len
);
2972 write_enn (own_buf
);
2976 response_needed
= 0;
2977 if (!target_running ())
2978 /* The packet we received doesn't make sense - but we can't
2979 reply to it, either. */
2982 fprintf (stderr
, "Killing all inferiors\n");
2983 for_each_inferior (&all_processes
, kill_inferior_callback
);
2985 /* When using the extended protocol, we wait with no program
2986 running. The traditional protocol will exit instead. */
2987 if (extended_protocol
)
2989 last_status
.kind
= TARGET_WAITKIND_EXITED
;
2990 last_status
.value
.sig
= TARGET_SIGNAL_KILL
;
2998 ptid_t gdb_id
, thread_id
;
3000 require_running (own_buf
);
3002 gdb_id
= read_ptid (&own_buf
[1], NULL
);
3003 thread_id
= gdb_id_to_thread_id (gdb_id
);
3004 if (ptid_equal (thread_id
, null_ptid
))
3006 write_enn (own_buf
);
3010 if (mythread_alive (thread_id
))
3013 write_enn (own_buf
);
3017 response_needed
= 0;
3019 /* Restarting the inferior is only supported in the extended
3021 if (extended_protocol
)
3023 if (target_running ())
3024 for_each_inferior (&all_processes
,
3025 kill_inferior_callback
);
3026 fprintf (stderr
, "GDBserver restarting\n");
3028 /* Wait till we are at 1st instruction in prog. */
3029 if (program_argv
!= NULL
)
3030 start_inferior (program_argv
);
3033 last_status
.kind
= TARGET_WAITKIND_EXITED
;
3034 last_status
.value
.sig
= TARGET_SIGNAL_KILL
;
3040 /* It is a request we don't understand. Respond with an
3041 empty packet so that gdb knows that we don't support this
3047 /* Extended (long) request. */
3048 handle_v_requests (own_buf
, packet_len
, &new_packet_len
);
3052 /* It is a request we don't understand. Respond with an empty
3053 packet so that gdb knows that we don't support this
3059 if (new_packet_len
!= -1)
3060 putpkt_binary (own_buf
, new_packet_len
);
3064 response_needed
= 0;
3066 if (!extended_protocol
&& have_ran
&& !target_running ())
3068 /* In non-stop, defer exiting until GDB had a chance to query
3069 the whole vStopped list (until it gets an OK). */
3072 fprintf (stderr
, "GDBserver exiting\n");
3084 /* Event-loop callback for serial events. */
3087 handle_serial_event (int err
, gdb_client_data client_data
)
3090 fprintf (stderr
, "handling possible serial event\n");
3092 /* Really handle it. */
3093 if (process_serial_event () < 0)
3096 /* Be sure to not change the selected inferior behind GDB's back.
3097 Important in the non-stop mode asynchronous protocol. */
3098 set_desired_inferior (1);
3103 /* Event-loop callback for target events. */
3106 handle_target_event (int err
, gdb_client_data client_data
)
3109 fprintf (stderr
, "handling possible target event\n");
3111 last_ptid
= mywait (minus_one_ptid
, &last_status
,
3114 if (last_status
.kind
!= TARGET_WAITKIND_IGNORE
)
3116 int pid
= ptid_get_pid (last_ptid
);
3117 struct process_info
*process
= find_process_pid (pid
);
3118 int forward_event
= !gdb_connected () || process
->gdb_detached
;
3120 if (last_status
.kind
== TARGET_WAITKIND_EXITED
3121 || last_status
.kind
== TARGET_WAITKIND_SIGNALLED
)
3123 mark_breakpoints_out (process
);
3124 mourn_inferior (process
);
3129 if (!target_running ())
3131 /* The last process exited. We're done. */
3135 if (last_status
.kind
== TARGET_WAITKIND_STOPPED
)
3137 /* A thread stopped with a signal, but gdb isn't
3138 connected to handle it. Pass it down to the
3139 inferior, as if it wasn't being traced. */
3140 struct thread_resume resume_info
;
3144 "GDB not connected; forwarding event %d for [%s]\n",
3145 (int) last_status
.kind
,
3146 target_pid_to_str (last_ptid
));
3148 resume_info
.thread
= last_ptid
;
3149 resume_info
.kind
= resume_continue
;
3150 resume_info
.sig
= last_status
.value
.sig
;
3151 (*the_target
->resume
) (&resume_info
, 1);
3153 else if (debug_threads
)
3154 fprintf (stderr
, "GDB not connected; ignoring event %d for [%s]\n",
3155 (int) last_status
.kind
,
3156 target_pid_to_str (last_ptid
));
3160 /* Something interesting. Tell GDB about it. */
3161 push_event (last_ptid
, &last_status
);
3165 /* Be sure to not change the selected inferior behind GDB's back.
3166 Important in the non-stop mode asynchronous protocol. */
3167 set_desired_inferior (1);