1 /* Select target systems and architectures at runtime for GDB.
2 Copyright 1990, 1992-1995, 1998, 1999 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
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 2 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, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24 #include "gdb_string.h"
38 target_info PARAMS ((char *, int));
41 cleanup_target PARAMS ((struct target_ops *));
44 maybe_kill_then_create_inferior PARAMS ((char *, char *, char **));
47 default_clone_and_follow_inferior PARAMS ((int, int *));
50 maybe_kill_then_attach PARAMS ((char *, int));
53 kill_or_be_killed PARAMS ((int));
56 default_terminal_info PARAMS ((char *, int));
59 nosymbol PARAMS ((char *, CORE_ADDR *));
62 tcomplain PARAMS ((void));
65 nomemory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *));
68 return_zero PARAMS ((void));
71 return_one PARAMS ((void));
74 target_ignore PARAMS ((void));
77 target_command PARAMS ((char *, int));
79 static struct target_ops *
80 find_default_run_target PARAMS ((char *));
83 update_current_target PARAMS ((void));
85 static void nosupport_runtime PARAMS ((void));
87 static void normal_target_post_startup_inferior PARAMS ((int pid));
89 /* Transfer LEN bytes between target address MEMADDR and GDB address MYADDR.
90 Returns 0 for success, errno code for failure (which includes partial
91 transfers--if you want a more useful response to partial transfers, try
92 target_read_memory_partial). */
95 target_xfer_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, int len,
96 int write, asection *bfd_section));
98 static void init_dummy_target PARAMS ((void));
101 debug_to_open PARAMS ((char *, int));
104 debug_to_close PARAMS ((int));
107 debug_to_attach PARAMS ((char *, int));
110 debug_to_detach PARAMS ((char *, int));
113 debug_to_resume PARAMS ((int, int, enum target_signal));
116 debug_to_wait PARAMS ((int, struct target_waitstatus *));
119 debug_to_fetch_registers PARAMS ((int));
122 debug_to_store_registers PARAMS ((int));
125 debug_to_prepare_to_store PARAMS ((void));
128 debug_to_xfer_memory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *));
131 debug_to_files_info PARAMS ((struct target_ops *));
134 debug_to_insert_breakpoint PARAMS ((CORE_ADDR, char *));
137 debug_to_remove_breakpoint PARAMS ((CORE_ADDR, char *));
140 debug_to_terminal_init PARAMS ((void));
143 debug_to_terminal_inferior PARAMS ((void));
146 debug_to_terminal_ours_for_output PARAMS ((void));
149 debug_to_terminal_ours PARAMS ((void));
152 debug_to_terminal_info PARAMS ((char *, int));
155 debug_to_kill PARAMS ((void));
158 debug_to_load PARAMS ((char *, int));
161 debug_to_lookup_symbol PARAMS ((char *, CORE_ADDR *));
164 debug_to_create_inferior PARAMS ((char *, char *, char **));
167 debug_to_mourn_inferior PARAMS ((void));
170 debug_to_can_run PARAMS ((void));
173 debug_to_notice_signals PARAMS ((int));
176 debug_to_thread_alive PARAMS ((int));
179 debug_to_stop PARAMS ((void));
181 static int debug_to_query PARAMS ((int/*char*/, char *, char *, int *));
183 /* Pointer to array of target architecture structures; the size of the
184 array; the current index into the array; the allocated size of the
186 struct target_ops **target_structs;
187 unsigned target_struct_size;
188 unsigned target_struct_index;
189 unsigned target_struct_allocsize;
190 #define DEFAULT_ALLOCSIZE 10
192 /* The initial current target, so that there is always a semi-valid
195 static struct target_ops dummy_target;
197 /* Top of target stack. */
199 struct target_stack_item *target_stack;
201 /* The target structure we are currently using to talk to a process
202 or file or whatever "inferior" we have. */
204 struct target_ops current_target;
206 /* Command list for target. */
208 static struct cmd_list_element *targetlist = NULL;
210 /* Nonzero if we are debugging an attached outside process
211 rather than an inferior. */
215 /* Non-zero if we want to see trace of target level stuff. */
217 static int targetdebug = 0;
219 static void setup_target_debug PARAMS ((void));
221 /* The user just typed 'target' without the name of a target. */
225 target_command (arg, from_tty)
229 fputs_filtered ("Argument required (target name). Try `help target'\n",
233 /* Add a possible target architecture to the list. */
237 struct target_ops *t;
241 target_struct_allocsize = DEFAULT_ALLOCSIZE;
242 target_structs = (struct target_ops **) xmalloc
243 (target_struct_allocsize * sizeof (*target_structs));
245 if (target_struct_size >= target_struct_allocsize)
247 target_struct_allocsize *= 2;
248 target_structs = (struct target_ops **)
249 xrealloc ((char *) target_structs,
250 target_struct_allocsize * sizeof (*target_structs));
252 target_structs[target_struct_size++] = t;
253 /* cleanup_target (t);*/
255 if (targetlist == NULL)
256 add_prefix_cmd ("target", class_run, target_command,
257 "Connect to a target machine or process.\n\
258 The first argument is the type or protocol of the target machine.\n\
259 Remaining arguments are interpreted by the target protocol. For more\n\
260 information on the arguments for a particular protocol, type\n\
261 `help target ' followed by the protocol name.",
262 &targetlist, "target ", 0, &cmdlist);
263 add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist);
275 nomemory (memaddr, myaddr, len, write, t)
280 struct target_ops *t;
282 errno = EIO; /* Can't read/write this location */
283 return 0; /* No bytes handled */
289 error ("You can't do that when your target is `%s'",
290 current_target.to_shortname);
296 error ("You can't do that without a process to debug.");
301 nosymbol (name, addrp)
305 return 1; /* Symbol does not exist in target env */
315 error ("No run-time support for this");
321 default_terminal_info (args, from_tty)
325 printf_unfiltered("No saved terminal information.\n");
328 /* This is the default target_create_inferior and target_attach function.
329 If the current target is executing, it asks whether to kill it off.
330 If this function returns without calling error(), it has killed off
331 the target, and the operation should be attempted. */
334 kill_or_be_killed (from_tty)
337 if (target_has_execution)
339 printf_unfiltered ("You are already running a program:\n");
340 target_files_info ();
341 if (query ("Kill it? ")) {
343 if (target_has_execution)
344 error ("Killing the program did not help.");
347 error ("Program not killed.");
354 maybe_kill_then_attach (args, from_tty)
358 kill_or_be_killed (from_tty);
359 target_attach (args, from_tty);
363 maybe_kill_then_create_inferior (exec, args, env)
368 kill_or_be_killed (0);
369 target_create_inferior (exec, args, env);
373 default_clone_and_follow_inferior (child_pid, followed_child)
377 target_clone_and_follow_inferior (child_pid, followed_child);
380 /* Clean up a target struct so it no longer has any zero pointers in it.
381 We default entries, at least to stubs that print error messages. */
385 struct target_ops *t;
388 #define de_fault(field, value) \
389 if (!t->field) t->field = value
391 /* FIELD DEFAULT VALUE */
393 de_fault (to_open, (void (*) PARAMS((char *, int))) tcomplain);
394 de_fault (to_close, (void (*) PARAMS((int))) target_ignore);
395 de_fault (to_attach, maybe_kill_then_attach);
396 de_fault (to_post_attach, (void (*) PARAMS ((int))) target_ignore);
397 de_fault (to_require_attach, maybe_kill_then_attach);
398 de_fault (to_detach, (void (*) PARAMS((char *, int))) target_ignore);
399 de_fault (to_require_detach, (void (*) PARAMS((int, char *, int))) target_ignore);
400 de_fault (to_resume, (void (*) PARAMS((int, int, enum target_signal))) noprocess);
401 de_fault (to_wait, (int (*) PARAMS((int, struct target_waitstatus *))) noprocess);
402 de_fault (to_post_wait, (void (*) PARAMS ((int, int))) target_ignore);
403 de_fault (to_fetch_registers, (void (*) PARAMS((int))) target_ignore);
404 de_fault (to_store_registers, (void (*) PARAMS((int))) noprocess);
405 de_fault (to_prepare_to_store, (void (*) PARAMS((void))) noprocess);
406 de_fault (to_xfer_memory, (int (*) PARAMS((CORE_ADDR, char *, int, int, struct target_ops *))) nomemory);
407 de_fault (to_files_info, (void (*) PARAMS((struct target_ops *))) target_ignore);
408 de_fault (to_insert_breakpoint, memory_insert_breakpoint);
409 de_fault (to_remove_breakpoint, memory_remove_breakpoint);
410 de_fault (to_terminal_init, (void (*) PARAMS((void))) target_ignore);
411 de_fault (to_terminal_inferior, (void (*) PARAMS ((void))) target_ignore);
412 de_fault (to_terminal_ours_for_output,(void (*) PARAMS ((void))) target_ignore);
413 de_fault (to_terminal_ours, (void (*) PARAMS ((void))) target_ignore);
414 de_fault (to_terminal_info, default_terminal_info);
415 de_fault (to_kill, (void (*) PARAMS((void))) noprocess);
416 de_fault (to_load, (void (*) PARAMS((char *, int))) tcomplain);
417 de_fault (to_lookup_symbol, (int (*) PARAMS ((char *, CORE_ADDR *))) nosymbol);
418 de_fault (to_create_inferior, maybe_kill_then_create_inferior);
419 de_fault (to_post_startup_inferior, (void (*) PARAMS ((int))) target_ignore);
420 de_fault (to_acknowledge_created_inferior, (void (*) PARAMS((int))) target_ignore);
421 de_fault (to_clone_and_follow_inferior, default_clone_and_follow_inferior);
422 de_fault (to_post_follow_inferior_by_clone, (void (*) PARAMS ((void))) target_ignore);
423 de_fault (to_insert_fork_catchpoint, (int (*) PARAMS ((int))) tcomplain);
424 de_fault (to_remove_fork_catchpoint, (int (*) PARAMS ((int))) tcomplain);
425 de_fault (to_insert_vfork_catchpoint, (int (*) PARAMS ((int))) tcomplain);
426 de_fault (to_remove_vfork_catchpoint, (int (*) PARAMS ((int))) tcomplain);
427 de_fault (to_has_forked, (int (*) PARAMS ((int, int *))) return_zero);
428 de_fault (to_has_vforked, (int (*) PARAMS ((int, int *))) return_zero);
429 de_fault (to_can_follow_vfork_prior_to_exec, (int (*) PARAMS ((void ))) return_zero);
430 de_fault (to_post_follow_vfork, (void (*) PARAMS ((int, int, int, int))) target_ignore);
431 de_fault (to_insert_exec_catchpoint, (int (*) PARAMS ((int))) tcomplain);
432 de_fault (to_remove_exec_catchpoint, (int (*) PARAMS ((int))) tcomplain);
433 de_fault (to_has_execd, (int (*) PARAMS ((int, char **))) return_zero);
434 de_fault (to_reported_exec_events_per_exec_call, (int (*) PARAMS ((void))) return_one);
435 de_fault (to_has_syscall_event, (int (*) PARAMS ((int, enum target_waitkind *, int *))) return_zero);
436 de_fault (to_has_exited, (int (*) PARAMS ((int, int, int *))) return_zero);
437 de_fault (to_mourn_inferior, (void (*) PARAMS ((void))) noprocess);
438 de_fault (to_can_run, return_zero);
439 de_fault (to_notice_signals, (void (*) PARAMS((int))) target_ignore);
440 de_fault (to_thread_alive, (int (*) PARAMS((int))) target_ignore);
441 de_fault (to_stop, (void (*) PARAMS((void))) target_ignore);
442 de_fault (to_query, (int (*) PARAMS((int/*char*/, char*, char *, int *))) target_ignore);
443 de_fault (to_enable_exception_callback, (struct symtab_and_line * (*) PARAMS((enum exception_event_kind, int))) nosupport_runtime);
444 de_fault (to_get_current_exception_event, (struct exception_event_record * (*) PARAMS((void))) nosupport_runtime);
446 de_fault (to_pid_to_exec_file, (char* (*) PARAMS((int))) return_zero);
447 de_fault (to_core_file_to_sym_file, (char* (*) PARAMS ((char *))) return_zero);
451 /* Go through the target stack from top to bottom, copying over zero entries in
452 current_target. In effect, we are doing class inheritance through the
453 pushed target vectors. */
456 update_current_target ()
458 struct target_stack_item *item;
459 struct target_ops *t;
461 /* First, reset current_target */
462 memset (¤t_target, 0, sizeof current_target);
464 for (item = target_stack; item; item = item->next)
466 t = item->target_ops;
468 #define INHERIT(FIELD, TARGET) \
469 if (!current_target.FIELD) \
470 current_target.FIELD = TARGET->FIELD
472 INHERIT (to_shortname, t);
473 INHERIT (to_longname, t);
475 INHERIT (to_open, t);
476 INHERIT (to_close, t);
477 INHERIT (to_attach, t);
478 INHERIT (to_post_attach, t);
479 INHERIT (to_require_attach, t);
480 INHERIT (to_detach, t);
481 INHERIT (to_require_detach, t);
482 INHERIT (to_resume, t);
483 INHERIT (to_wait, t);
484 INHERIT (to_post_wait, t);
485 INHERIT (to_fetch_registers, t);
486 INHERIT (to_store_registers, t);
487 INHERIT (to_prepare_to_store, t);
488 INHERIT (to_xfer_memory, t);
489 INHERIT (to_files_info, t);
490 INHERIT (to_insert_breakpoint, t);
491 INHERIT (to_remove_breakpoint, t);
492 INHERIT (to_terminal_init, t);
493 INHERIT (to_terminal_inferior, t);
494 INHERIT (to_terminal_ours_for_output, t);
495 INHERIT (to_terminal_ours, t);
496 INHERIT (to_terminal_info, t);
497 INHERIT (to_kill, t);
498 INHERIT (to_load, t);
499 INHERIT (to_lookup_symbol, t);
500 INHERIT (to_create_inferior, t);
501 INHERIT (to_post_startup_inferior, t);
502 INHERIT (to_acknowledge_created_inferior, t);
503 INHERIT (to_clone_and_follow_inferior, t);
504 INHERIT (to_post_follow_inferior_by_clone, t);
505 INHERIT (to_insert_fork_catchpoint, t);
506 INHERIT (to_remove_fork_catchpoint, t);
507 INHERIT (to_insert_vfork_catchpoint, t);
508 INHERIT (to_remove_vfork_catchpoint, t);
509 INHERIT (to_has_forked, t);
510 INHERIT (to_has_vforked, t);
511 INHERIT (to_can_follow_vfork_prior_to_exec, t);
512 INHERIT (to_post_follow_vfork, t);
513 INHERIT (to_insert_exec_catchpoint, t);
514 INHERIT (to_remove_exec_catchpoint, t);
515 INHERIT (to_has_execd, t);
516 INHERIT (to_reported_exec_events_per_exec_call, t);
517 INHERIT (to_has_syscall_event, t);
518 INHERIT (to_has_exited, t);
519 INHERIT (to_mourn_inferior, t);
520 INHERIT (to_can_run, t);
521 INHERIT (to_notice_signals, t);
522 INHERIT (to_thread_alive, t);
523 INHERIT (to_find_new_threads, t);
524 INHERIT (to_stop, t);
525 INHERIT (to_query, t);
526 INHERIT (to_enable_exception_callback, t);
527 INHERIT (to_get_current_exception_event, t);
528 INHERIT (to_pid_to_exec_file, t);
529 INHERIT (to_core_file_to_sym_file, t);
530 INHERIT (to_stratum, t);
531 INHERIT (DONT_USE, t);
532 INHERIT (to_has_all_memory, t);
533 INHERIT (to_has_memory, t);
534 INHERIT (to_has_stack, t);
535 INHERIT (to_has_registers, t);
536 INHERIT (to_has_execution, t);
537 INHERIT (to_has_thread_control, t);
538 INHERIT (to_sections, t);
539 INHERIT (to_sections_end, t);
540 INHERIT (to_magic, t);
546 /* Push a new target type into the stack of the existing target accessors,
547 possibly superseding some of the existing accessors.
549 Result is zero if the pushed target ended up on top of the stack,
550 nonzero if at least one target is on top of it.
552 Rather than allow an empty stack, we always have the dummy target at
553 the bottom stratum, so we can call the function vectors without
558 struct target_ops *t;
560 struct target_stack_item *cur, *prev, *tmp;
562 /* Check magic number. If wrong, it probably means someone changed
563 the struct definition, but not all the places that initialize one. */
564 if (t->to_magic != OPS_MAGIC)
566 fprintf_unfiltered(gdb_stderr,
567 "Magic number of %s target struct wrong\n",
572 /* Find the proper stratum to install this target in. */
574 for (prev = NULL, cur = target_stack; cur; prev = cur, cur = cur->next)
576 if ((int)(t->to_stratum) >= (int)(cur->target_ops->to_stratum))
580 /* If there's already targets at this stratum, remove them. */
583 while (t->to_stratum == cur->target_ops->to_stratum)
585 /* There's already something on this stratum. Close it off. */
586 if (cur->target_ops->to_close)
587 (cur->target_ops->to_close) (0);
589 prev->next = cur->next; /* Unchain old target_ops */
591 target_stack = cur->next; /* Unchain first on list */
597 /* We have removed all targets in our stratum, now add the new one. */
599 tmp = (struct target_stack_item *)
600 xmalloc (sizeof (struct target_stack_item));
609 update_current_target ();
611 cleanup_target (¤t_target); /* Fill in the gaps */
614 setup_target_debug ();
619 /* Remove a target_ops vector from the stack, wherever it may be.
620 Return how many times it was removed (0 or 1). */
624 struct target_ops *t;
626 struct target_stack_item *cur, *prev;
629 t->to_close (0); /* Let it clean up */
631 /* Look for the specified target. Note that we assume that a target
632 can only occur once in the target stack. */
634 for (cur = target_stack, prev = NULL; cur; prev = cur, cur = cur->next)
635 if (cur->target_ops == t)
639 return 0; /* Didn't find target_ops, quit now */
641 /* Unchain the target */
644 target_stack = cur->next;
646 prev->next = cur->next;
648 free (cur); /* Release the target_stack_item */
650 update_current_target ();
651 cleanup_target (¤t_target);
659 (current_target.to_close)(0); /* Let it clean up */
660 if (unpush_target (target_stack->target_ops) == 1)
663 fprintf_unfiltered(gdb_stderr,
664 "pop_target couldn't find target %s\n",
665 current_target.to_shortname);
670 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
672 /* target_read_string -- read a null terminated string, up to LEN bytes,
673 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
674 Set *STRING to a pointer to malloc'd memory containing the data; the caller
675 is responsible for freeing it. Return the number of bytes successfully
679 target_read_string (memaddr, string, len, errnop)
685 int tlen, origlen, offset, i;
689 int buffer_allocated;
691 unsigned int nbytes_read = 0;
693 /* Small for testing. */
694 buffer_allocated = 4;
695 buffer = xmalloc (buffer_allocated);
702 tlen = MIN (len, 4 - (memaddr & 3));
703 offset = memaddr & 3;
705 errcode = target_xfer_memory (memaddr & ~3, buf, 4, 0, NULL);
708 /* The transfer request might have crossed the boundary to an
709 unallocated region of memory. Retry the transfer, requesting
713 errcode = target_xfer_memory (memaddr, buf, 1, 0, NULL);
718 if (bufptr - buffer + tlen > buffer_allocated)
721 bytes = bufptr - buffer;
722 buffer_allocated *= 2;
723 buffer = xrealloc (buffer, buffer_allocated);
724 bufptr = buffer + bytes;
727 for (i = 0; i < tlen; i++)
729 *bufptr++ = buf[i + offset];
730 if (buf[i + offset] == '\000')
732 nbytes_read += i + 1;
749 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
750 GDB's memory at MYADDR. Returns either 0 for success or an errno value
753 If an error occurs, no guarantee is made about the contents of the data at
754 MYADDR. In particular, the caller should not depend upon partial reads
755 filling the buffer with good data. There is no way for the caller to know
756 how much good data might have been transfered anyway. Callers that can
757 deal with partial reads should call target_read_memory_partial. */
760 target_read_memory (memaddr, myaddr, len)
765 return target_xfer_memory (memaddr, myaddr, len, 0, NULL);
769 target_read_memory_section (memaddr, myaddr, len, bfd_section)
773 asection *bfd_section;
775 return target_xfer_memory (memaddr, myaddr, len, 0, bfd_section);
778 /* Read LEN bytes of target memory at address MEMADDR, placing the results
779 in GDB's memory at MYADDR. Returns a count of the bytes actually read,
780 and optionally an errno value in the location pointed to by ERRNOPTR
781 if ERRNOPTR is non-null. */
784 target_read_memory_partial (memaddr, myaddr, len, errnoptr)
790 int nread; /* Number of bytes actually read. */
791 int errcode; /* Error from last read. */
793 /* First try a complete read. */
794 errcode = target_xfer_memory (memaddr, myaddr, len, 0, NULL);
802 /* Loop, reading one byte at a time until we get as much as we can. */
803 for (errcode = 0, nread = 0; len > 0 && errcode == 0; nread++, len--)
805 errcode = target_xfer_memory (memaddr++, myaddr++, 1, 0, NULL);
807 /* If an error, the last read was unsuccessful, so adjust count. */
813 if (errnoptr != NULL)
821 target_write_memory (memaddr, myaddr, len)
826 return target_xfer_memory (memaddr, myaddr, len, 1, NULL);
829 /* This variable is used to pass section information down to targets. This
830 *should* be done by adding an argument to the target_xfer_memory function
831 of all the targets, but I didn't feel like changing 50+ files. */
833 asection *target_memory_bfd_section = NULL;
835 /* Move memory to or from the targets. Iterate until all of it has
836 been moved, if necessary. The top target gets priority; anything
837 it doesn't want, is offered to the next one down, etc. Note the
838 business with curlen: if an early target says "no, but I have a
839 boundary overlapping this xfer" then we shorten what we offer to
840 the subsequent targets so the early guy will get a chance at the
841 tail before the subsequent ones do.
843 Result is 0 or errno value. */
846 target_xfer_memory (memaddr, myaddr, len, write, bfd_section)
851 asection *bfd_section;
855 struct target_ops *t;
856 struct target_stack_item *item;
858 /* Zero length requests are ok and require no work. */
862 target_memory_bfd_section = bfd_section;
864 /* to_xfer_memory is not guaranteed to set errno, even when it returns
868 /* The quick case is that the top target does it all. */
869 res = current_target.to_xfer_memory
870 (memaddr, myaddr, len, write, ¤t_target);
876 /* If res <= 0 then we call it again in the loop. Ah well. */
880 curlen = len; /* Want to do it all */
881 for (item = target_stack; item; item = item->next)
883 t = item->target_ops;
884 if (!t->to_has_memory)
887 res = t->to_xfer_memory (memaddr, myaddr, curlen, write, t);
889 break; /* Handled all or part of xfer */
890 if (t->to_has_all_memory)
896 /* If this address is for nonexistent memory,
897 read zeros if reading, or do nothing if writing. Return error. */
899 memset (myaddr, 0, len);
910 return 0; /* We managed to cover it all somehow. */
916 target_info (args, from_tty)
920 struct target_ops *t;
921 struct target_stack_item *item;
924 if (symfile_objfile != NULL)
925 printf_unfiltered ("Symbols from \"%s\".\n", symfile_objfile->name);
927 #ifdef FILES_INFO_HOOK
928 if (FILES_INFO_HOOK ())
932 for (item = target_stack; item; item = item->next)
934 t = item->target_ops;
936 if (!t->to_has_memory)
939 if ((int)(t->to_stratum) <= (int)dummy_stratum)
942 printf_unfiltered("\tWhile running this, GDB does not access memory from...\n");
943 printf_unfiltered("%s:\n", t->to_longname);
944 (t->to_files_info)(t);
945 has_all_mem = t->to_has_all_memory;
949 /* This is to be called by the open routine before it does
953 target_preopen (from_tty)
958 if (target_has_execution)
960 if (query ("A program is being debugged already. Kill it? "))
963 error ("Program not killed.");
966 /* Calling target_kill may remove the target from the stack. But if
967 it doesn't (which seems like a win for UDI), remove it now. */
969 if (target_has_execution)
973 /* Detach a target after doing deferred register stores. */
976 target_detach (args, from_tty)
980 /* Handle any optimized stores to the inferior. */
981 #ifdef DO_DEFERRED_STORES
984 (current_target.to_detach) (args, from_tty);
988 target_link (modname, t_reloc)
992 if (STREQ(current_target.to_shortname, "rombug"))
994 (current_target.to_lookup_symbol) (modname, t_reloc);
996 error("Unable to link to %s and get relocation in rombug", modname);
999 *t_reloc = (CORE_ADDR)-1;
1002 /* Look through the list of possible targets for a target that can
1003 execute a run or attach command without any other data. This is
1004 used to locate the default process stratum.
1006 Result is always valid (error() is called for errors). */
1008 static struct target_ops *
1009 find_default_run_target (do_mesg)
1012 struct target_ops **t;
1013 struct target_ops *runable = NULL;
1018 for (t = target_structs; t < target_structs + target_struct_size;
1021 if ((*t)->to_can_run && target_can_run(*t))
1029 error ("Don't know how to %s. Try \"help target\".", do_mesg);
1035 find_default_attach (args, from_tty)
1039 struct target_ops *t;
1041 t = find_default_run_target("attach");
1042 (t->to_attach) (args, from_tty);
1047 find_default_require_attach (args, from_tty)
1051 struct target_ops *t;
1053 t = find_default_run_target("require_attach");
1054 (t->to_require_attach) (args, from_tty);
1059 find_default_require_detach (pid, args, from_tty)
1064 struct target_ops *t;
1066 t = find_default_run_target("require_detach");
1067 (t->to_require_detach) (pid, args, from_tty);
1072 find_default_create_inferior (exec_file, allargs, env)
1077 struct target_ops *t;
1079 t = find_default_run_target("run");
1080 (t->to_create_inferior) (exec_file, allargs, env);
1085 find_default_clone_and_follow_inferior (child_pid, followed_child)
1087 int *followed_child;
1089 struct target_ops *t;
1091 t = find_default_run_target("run");
1092 (t->to_clone_and_follow_inferior) (child_pid, followed_child);
1108 /* Find a single runnable target in the stack and return it. If for
1109 some reason there is more than one, return NULL. */
1114 struct target_ops **t;
1115 struct target_ops *runable = NULL;
1120 for (t = target_structs; t < target_structs + target_struct_size; ++t)
1122 if ((*t)->to_can_run && target_can_run(*t))
1129 return (count == 1 ? runable : NULL);
1135 struct target_ops **t;
1136 struct target_ops *runable = NULL;
1141 for (t = target_structs; t < target_structs + target_struct_size;
1144 if ((*t)->to_stratum == core_stratum)
1151 return(count == 1 ? runable : NULL);
1154 /* The inferior process has died. Long live the inferior! */
1157 generic_mourn_inferior ()
1159 extern int show_breakpoint_hit_counts;
1163 breakpoint_init_inferior (inf_exited);
1164 registers_changed ();
1166 #ifdef CLEAR_DEFERRED_STORES
1167 /* Delete any pending stores to the inferior... */
1168 CLEAR_DEFERRED_STORES;
1171 reopen_exec_file ();
1172 reinit_frame_cache ();
1174 /* It is confusing to the user for ignore counts to stick around
1175 from previous runs of the inferior. So clear them. */
1176 /* However, it is more confusing for the ignore counts to disappear when
1177 using hit counts. So don't clear them if we're counting hits. */
1178 if (!show_breakpoint_hit_counts)
1179 breakpoint_clear_ignore_counts ();
1182 /* This table must match in order and size the signals in enum target_signal
1190 {"SIGHUP", "Hangup"},
1191 {"SIGINT", "Interrupt"},
1192 {"SIGQUIT", "Quit"},
1193 {"SIGILL", "Illegal instruction"},
1194 {"SIGTRAP", "Trace/breakpoint trap"},
1195 {"SIGABRT", "Aborted"},
1196 {"SIGEMT", "Emulation trap"},
1197 {"SIGFPE", "Arithmetic exception"},
1198 {"SIGKILL", "Killed"},
1199 {"SIGBUS", "Bus error"},
1200 {"SIGSEGV", "Segmentation fault"},
1201 {"SIGSYS", "Bad system call"},
1202 {"SIGPIPE", "Broken pipe"},
1203 {"SIGALRM", "Alarm clock"},
1204 {"SIGTERM", "Terminated"},
1205 {"SIGURG", "Urgent I/O condition"},
1206 {"SIGSTOP", "Stopped (signal)"},
1207 {"SIGTSTP", "Stopped (user)"},
1208 {"SIGCONT", "Continued"},
1209 {"SIGCHLD", "Child status changed"},
1210 {"SIGTTIN", "Stopped (tty input)"},
1211 {"SIGTTOU", "Stopped (tty output)"},
1212 {"SIGIO", "I/O possible"},
1213 {"SIGXCPU", "CPU time limit exceeded"},
1214 {"SIGXFSZ", "File size limit exceeded"},
1215 {"SIGVTALRM", "Virtual timer expired"},
1216 {"SIGPROF", "Profiling timer expired"},
1217 {"SIGWINCH", "Window size changed"},
1218 {"SIGLOST", "Resource lost"},
1219 {"SIGUSR1", "User defined signal 1"},
1220 {"SIGUSR2", "User defined signal 2"},
1221 {"SIGPWR", "Power fail/restart"},
1222 {"SIGPOLL", "Pollable event occurred"},
1223 {"SIGWIND", "SIGWIND"},
1224 {"SIGPHONE", "SIGPHONE"},
1225 {"SIGWAITING", "Process's LWPs are blocked"},
1226 {"SIGLWP", "Signal LWP"},
1227 {"SIGDANGER", "Swap space dangerously low"},
1228 {"SIGGRANT", "Monitor mode granted"},
1229 {"SIGRETRACT", "Need to relinquish monitor mode"},
1230 {"SIGMSG", "Monitor mode data available"},
1231 {"SIGSOUND", "Sound completed"},
1232 {"SIGSAK", "Secure attention"},
1233 {"SIGPRIO", "SIGPRIO"},
1234 {"SIG33", "Real-time event 33"},
1235 {"SIG34", "Real-time event 34"},
1236 {"SIG35", "Real-time event 35"},
1237 {"SIG36", "Real-time event 36"},
1238 {"SIG37", "Real-time event 37"},
1239 {"SIG38", "Real-time event 38"},
1240 {"SIG39", "Real-time event 39"},
1241 {"SIG40", "Real-time event 40"},
1242 {"SIG41", "Real-time event 41"},
1243 {"SIG42", "Real-time event 42"},
1244 {"SIG43", "Real-time event 43"},
1245 {"SIG44", "Real-time event 44"},
1246 {"SIG45", "Real-time event 45"},
1247 {"SIG46", "Real-time event 46"},
1248 {"SIG47", "Real-time event 47"},
1249 {"SIG48", "Real-time event 48"},
1250 {"SIG49", "Real-time event 49"},
1251 {"SIG50", "Real-time event 50"},
1252 {"SIG51", "Real-time event 51"},
1253 {"SIG52", "Real-time event 52"},
1254 {"SIG53", "Real-time event 53"},
1255 {"SIG54", "Real-time event 54"},
1256 {"SIG55", "Real-time event 55"},
1257 {"SIG56", "Real-time event 56"},
1258 {"SIG57", "Real-time event 57"},
1259 {"SIG58", "Real-time event 58"},
1260 {"SIG59", "Real-time event 59"},
1261 {"SIG60", "Real-time event 60"},
1262 {"SIG61", "Real-time event 61"},
1263 {"SIG62", "Real-time event 62"},
1264 {"SIG63", "Real-time event 63"},
1265 {"SIGCANCEL", "LWP internal signal"},
1267 #if defined(MACH) || defined(__MACH__)
1268 /* Mach exceptions */
1269 {"EXC_BAD_ACCESS", "Could not access memory"},
1270 {"EXC_BAD_INSTRUCTION", "Illegal instruction/operand"},
1271 {"EXC_ARITHMETIC", "Arithmetic exception"},
1272 {"EXC_EMULATION", "Emulation instruction"},
1273 {"EXC_SOFTWARE", "Software generated exception"},
1274 {"EXC_BREAKPOINT", "Breakpoint"},
1276 {"SIGINFO", "Information request"},
1278 {NULL, "Unknown signal"},
1279 {NULL, "Internal error: printing TARGET_SIGNAL_DEFAULT"},
1281 /* Last entry, used to check whether the table is the right size. */
1282 {NULL, "TARGET_SIGNAL_MAGIC"}
1285 /* Return the string for a signal. */
1287 target_signal_to_string (sig)
1288 enum target_signal sig;
1290 if ((sig >= TARGET_SIGNAL_FIRST) && (sig <= TARGET_SIGNAL_LAST))
1291 return signals[sig].string;
1293 return signals[TARGET_SIGNAL_UNKNOWN].string;
1296 /* Return the name for a signal. */
1298 target_signal_to_name (sig)
1299 enum target_signal sig;
1301 if (sig == TARGET_SIGNAL_UNKNOWN)
1302 /* I think the code which prints this will always print it along with
1303 the string, so no need to be verbose. */
1305 return signals[sig].name;
1308 /* Given a name, return its signal. */
1310 target_signal_from_name (name)
1313 enum target_signal sig;
1315 /* It's possible we also should allow "SIGCLD" as well as "SIGCHLD"
1316 for TARGET_SIGNAL_SIGCHLD. SIGIOT, on the other hand, is more
1317 questionable; seems like by now people should call it SIGABRT
1320 /* This ugly cast brought to you by the native VAX compiler. */
1321 for (sig = TARGET_SIGNAL_HUP;
1322 signals[sig].name != NULL;
1323 sig = (enum target_signal)((int)sig + 1))
1324 if (STREQ (name, signals[sig].name))
1326 return TARGET_SIGNAL_UNKNOWN;
1329 /* The following functions are to help certain targets deal
1330 with the signal/waitstatus stuff. They could just as well be in
1331 a file called native-utils.c or unixwaitstatus-utils.c or whatever. */
1333 /* Convert host signal to our signals. */
1335 target_signal_from_host (hostsig)
1338 /* A switch statement would make sense but would require special kludges
1339 to deal with the cases where more than one signal has the same number. */
1341 if (hostsig == 0) return TARGET_SIGNAL_0;
1343 #if defined (SIGHUP)
1344 if (hostsig == SIGHUP) return TARGET_SIGNAL_HUP;
1346 #if defined (SIGINT)
1347 if (hostsig == SIGINT) return TARGET_SIGNAL_INT;
1349 #if defined (SIGQUIT)
1350 if (hostsig == SIGQUIT) return TARGET_SIGNAL_QUIT;
1352 #if defined (SIGILL)
1353 if (hostsig == SIGILL) return TARGET_SIGNAL_ILL;
1355 #if defined (SIGTRAP)
1356 if (hostsig == SIGTRAP) return TARGET_SIGNAL_TRAP;
1358 #if defined (SIGABRT)
1359 if (hostsig == SIGABRT) return TARGET_SIGNAL_ABRT;
1361 #if defined (SIGEMT)
1362 if (hostsig == SIGEMT) return TARGET_SIGNAL_EMT;
1364 #if defined (SIGFPE)
1365 if (hostsig == SIGFPE) return TARGET_SIGNAL_FPE;
1367 #if defined (SIGKILL)
1368 if (hostsig == SIGKILL) return TARGET_SIGNAL_KILL;
1370 #if defined (SIGBUS)
1371 if (hostsig == SIGBUS) return TARGET_SIGNAL_BUS;
1373 #if defined (SIGSEGV)
1374 if (hostsig == SIGSEGV) return TARGET_SIGNAL_SEGV;
1376 #if defined (SIGSYS)
1377 if (hostsig == SIGSYS) return TARGET_SIGNAL_SYS;
1379 #if defined (SIGPIPE)
1380 if (hostsig == SIGPIPE) return TARGET_SIGNAL_PIPE;
1382 #if defined (SIGALRM)
1383 if (hostsig == SIGALRM) return TARGET_SIGNAL_ALRM;
1385 #if defined (SIGTERM)
1386 if (hostsig == SIGTERM) return TARGET_SIGNAL_TERM;
1388 #if defined (SIGUSR1)
1389 if (hostsig == SIGUSR1) return TARGET_SIGNAL_USR1;
1391 #if defined (SIGUSR2)
1392 if (hostsig == SIGUSR2) return TARGET_SIGNAL_USR2;
1394 #if defined (SIGCLD)
1395 if (hostsig == SIGCLD) return TARGET_SIGNAL_CHLD;
1397 #if defined (SIGCHLD)
1398 if (hostsig == SIGCHLD) return TARGET_SIGNAL_CHLD;
1400 #if defined (SIGPWR)
1401 if (hostsig == SIGPWR) return TARGET_SIGNAL_PWR;
1403 #if defined (SIGWINCH)
1404 if (hostsig == SIGWINCH) return TARGET_SIGNAL_WINCH;
1406 #if defined (SIGURG)
1407 if (hostsig == SIGURG) return TARGET_SIGNAL_URG;
1410 if (hostsig == SIGIO) return TARGET_SIGNAL_IO;
1412 #if defined (SIGPOLL)
1413 if (hostsig == SIGPOLL) return TARGET_SIGNAL_POLL;
1415 #if defined (SIGSTOP)
1416 if (hostsig == SIGSTOP) return TARGET_SIGNAL_STOP;
1418 #if defined (SIGTSTP)
1419 if (hostsig == SIGTSTP) return TARGET_SIGNAL_TSTP;
1421 #if defined (SIGCONT)
1422 if (hostsig == SIGCONT) return TARGET_SIGNAL_CONT;
1424 #if defined (SIGTTIN)
1425 if (hostsig == SIGTTIN) return TARGET_SIGNAL_TTIN;
1427 #if defined (SIGTTOU)
1428 if (hostsig == SIGTTOU) return TARGET_SIGNAL_TTOU;
1430 #if defined (SIGVTALRM)
1431 if (hostsig == SIGVTALRM) return TARGET_SIGNAL_VTALRM;
1433 #if defined (SIGPROF)
1434 if (hostsig == SIGPROF) return TARGET_SIGNAL_PROF;
1436 #if defined (SIGXCPU)
1437 if (hostsig == SIGXCPU) return TARGET_SIGNAL_XCPU;
1439 #if defined (SIGXFSZ)
1440 if (hostsig == SIGXFSZ) return TARGET_SIGNAL_XFSZ;
1442 #if defined (SIGWIND)
1443 if (hostsig == SIGWIND) return TARGET_SIGNAL_WIND;
1445 #if defined (SIGPHONE)
1446 if (hostsig == SIGPHONE) return TARGET_SIGNAL_PHONE;
1448 #if defined (SIGLOST)
1449 if (hostsig == SIGLOST) return TARGET_SIGNAL_LOST;
1451 #if defined (SIGWAITING)
1452 if (hostsig == SIGWAITING) return TARGET_SIGNAL_WAITING;
1454 #if defined (SIGCANCEL)
1455 if (hostsig == SIGCANCEL) return TARGET_SIGNAL_CANCEL;
1457 #if defined (SIGLWP)
1458 if (hostsig == SIGLWP) return TARGET_SIGNAL_LWP;
1460 #if defined (SIGDANGER)
1461 if (hostsig == SIGDANGER) return TARGET_SIGNAL_DANGER;
1463 #if defined (SIGGRANT)
1464 if (hostsig == SIGGRANT) return TARGET_SIGNAL_GRANT;
1466 #if defined (SIGRETRACT)
1467 if (hostsig == SIGRETRACT) return TARGET_SIGNAL_RETRACT;
1469 #if defined (SIGMSG)
1470 if (hostsig == SIGMSG) return TARGET_SIGNAL_MSG;
1472 #if defined (SIGSOUND)
1473 if (hostsig == SIGSOUND) return TARGET_SIGNAL_SOUND;
1475 #if defined (SIGSAK)
1476 if (hostsig == SIGSAK) return TARGET_SIGNAL_SAK;
1478 #if defined (SIGPRIO)
1479 if (hostsig == SIGPRIO) return TARGET_SIGNAL_PRIO;
1482 /* Mach exceptions. Assumes that the values for EXC_ are positive! */
1483 #if defined (EXC_BAD_ACCESS) && defined (_NSIG)
1484 if (hostsig == _NSIG + EXC_BAD_ACCESS) return TARGET_EXC_BAD_ACCESS;
1486 #if defined (EXC_BAD_INSTRUCTION) && defined (_NSIG)
1487 if (hostsig == _NSIG + EXC_BAD_INSTRUCTION) return TARGET_EXC_BAD_INSTRUCTION;
1489 #if defined (EXC_ARITHMETIC) && defined (_NSIG)
1490 if (hostsig == _NSIG + EXC_ARITHMETIC) return TARGET_EXC_ARITHMETIC;
1492 #if defined (EXC_EMULATION) && defined (_NSIG)
1493 if (hostsig == _NSIG + EXC_EMULATION) return TARGET_EXC_EMULATION;
1495 #if defined (EXC_SOFTWARE) && defined (_NSIG)
1496 if (hostsig == _NSIG + EXC_SOFTWARE) return TARGET_EXC_SOFTWARE;
1498 #if defined (EXC_BREAKPOINT) && defined (_NSIG)
1499 if (hostsig == _NSIG + EXC_BREAKPOINT) return TARGET_EXC_BREAKPOINT;
1502 #if defined (SIGINFO)
1503 if (hostsig == SIGINFO) return TARGET_SIGNAL_INFO;
1506 #if defined (REALTIME_LO)
1507 if (hostsig >= REALTIME_LO && hostsig < REALTIME_HI)
1508 return (enum target_signal)
1509 (hostsig - 33 + (int) TARGET_SIGNAL_REALTIME_33);
1511 return TARGET_SIGNAL_UNKNOWN;
1515 target_signal_to_host (oursig)
1516 enum target_signal oursig;
1520 case TARGET_SIGNAL_0: return 0;
1522 #if defined (SIGHUP)
1523 case TARGET_SIGNAL_HUP: return SIGHUP;
1525 #if defined (SIGINT)
1526 case TARGET_SIGNAL_INT: return SIGINT;
1528 #if defined (SIGQUIT)
1529 case TARGET_SIGNAL_QUIT: return SIGQUIT;
1531 #if defined (SIGILL)
1532 case TARGET_SIGNAL_ILL: return SIGILL;
1534 #if defined (SIGTRAP)
1535 case TARGET_SIGNAL_TRAP: return SIGTRAP;
1537 #if defined (SIGABRT)
1538 case TARGET_SIGNAL_ABRT: return SIGABRT;
1540 #if defined (SIGEMT)
1541 case TARGET_SIGNAL_EMT: return SIGEMT;
1543 #if defined (SIGFPE)
1544 case TARGET_SIGNAL_FPE: return SIGFPE;
1546 #if defined (SIGKILL)
1547 case TARGET_SIGNAL_KILL: return SIGKILL;
1549 #if defined (SIGBUS)
1550 case TARGET_SIGNAL_BUS: return SIGBUS;
1552 #if defined (SIGSEGV)
1553 case TARGET_SIGNAL_SEGV: return SIGSEGV;
1555 #if defined (SIGSYS)
1556 case TARGET_SIGNAL_SYS: return SIGSYS;
1558 #if defined (SIGPIPE)
1559 case TARGET_SIGNAL_PIPE: return SIGPIPE;
1561 #if defined (SIGALRM)
1562 case TARGET_SIGNAL_ALRM: return SIGALRM;
1564 #if defined (SIGTERM)
1565 case TARGET_SIGNAL_TERM: return SIGTERM;
1567 #if defined (SIGUSR1)
1568 case TARGET_SIGNAL_USR1: return SIGUSR1;
1570 #if defined (SIGUSR2)
1571 case TARGET_SIGNAL_USR2: return SIGUSR2;
1573 #if defined (SIGCHLD) || defined (SIGCLD)
1574 case TARGET_SIGNAL_CHLD:
1575 #if defined (SIGCHLD)
1580 #endif /* SIGCLD or SIGCHLD */
1581 #if defined (SIGPWR)
1582 case TARGET_SIGNAL_PWR: return SIGPWR;
1584 #if defined (SIGWINCH)
1585 case TARGET_SIGNAL_WINCH: return SIGWINCH;
1587 #if defined (SIGURG)
1588 case TARGET_SIGNAL_URG: return SIGURG;
1591 case TARGET_SIGNAL_IO: return SIGIO;
1593 #if defined (SIGPOLL)
1594 case TARGET_SIGNAL_POLL: return SIGPOLL;
1596 #if defined (SIGSTOP)
1597 case TARGET_SIGNAL_STOP: return SIGSTOP;
1599 #if defined (SIGTSTP)
1600 case TARGET_SIGNAL_TSTP: return SIGTSTP;
1602 #if defined (SIGCONT)
1603 case TARGET_SIGNAL_CONT: return SIGCONT;
1605 #if defined (SIGTTIN)
1606 case TARGET_SIGNAL_TTIN: return SIGTTIN;
1608 #if defined (SIGTTOU)
1609 case TARGET_SIGNAL_TTOU: return SIGTTOU;
1611 #if defined (SIGVTALRM)
1612 case TARGET_SIGNAL_VTALRM: return SIGVTALRM;
1614 #if defined (SIGPROF)
1615 case TARGET_SIGNAL_PROF: return SIGPROF;
1617 #if defined (SIGXCPU)
1618 case TARGET_SIGNAL_XCPU: return SIGXCPU;
1620 #if defined (SIGXFSZ)
1621 case TARGET_SIGNAL_XFSZ: return SIGXFSZ;
1623 #if defined (SIGWIND)
1624 case TARGET_SIGNAL_WIND: return SIGWIND;
1626 #if defined (SIGPHONE)
1627 case TARGET_SIGNAL_PHONE: return SIGPHONE;
1629 #if defined (SIGLOST)
1630 case TARGET_SIGNAL_LOST: return SIGLOST;
1632 #if defined (SIGWAITING)
1633 case TARGET_SIGNAL_WAITING: return SIGWAITING;
1635 #if defined (SIGCANCEL)
1636 case TARGET_SIGNAL_CANCEL: return SIGCANCEL;
1638 #if defined (SIGLWP)
1639 case TARGET_SIGNAL_LWP: return SIGLWP;
1641 #if defined (SIGDANGER)
1642 case TARGET_SIGNAL_DANGER: return SIGDANGER;
1644 #if defined (SIGGRANT)
1645 case TARGET_SIGNAL_GRANT: return SIGGRANT;
1647 #if defined (SIGRETRACT)
1648 case TARGET_SIGNAL_RETRACT: return SIGRETRACT;
1650 #if defined (SIGMSG)
1651 case TARGET_SIGNAL_MSG: return SIGMSG;
1653 #if defined (SIGSOUND)
1654 case TARGET_SIGNAL_SOUND: return SIGSOUND;
1656 #if defined (SIGSAK)
1657 case TARGET_SIGNAL_SAK: return SIGSAK;
1659 #if defined (SIGPRIO)
1660 case TARGET_SIGNAL_PRIO: return SIGPRIO;
1663 /* Mach exceptions. Assumes that the values for EXC_ are positive! */
1664 #if defined (EXC_BAD_ACCESS) && defined (_NSIG)
1665 case TARGET_EXC_BAD_ACCESS: return _NSIG + EXC_BAD_ACCESS;
1667 #if defined (EXC_BAD_INSTRUCTION) && defined (_NSIG)
1668 case TARGET_EXC_BAD_INSTRUCTION: return _NSIG + EXC_BAD_INSTRUCTION;
1670 #if defined (EXC_ARITHMETIC) && defined (_NSIG)
1671 case TARGET_EXC_ARITHMETIC: return _NSIG + EXC_ARITHMETIC;
1673 #if defined (EXC_EMULATION) && defined (_NSIG)
1674 case TARGET_EXC_EMULATION: return _NSIG + EXC_EMULATION;
1676 #if defined (EXC_SOFTWARE) && defined (_NSIG)
1677 case TARGET_EXC_SOFTWARE: return _NSIG + EXC_SOFTWARE;
1679 #if defined (EXC_BREAKPOINT) && defined (_NSIG)
1680 case TARGET_EXC_BREAKPOINT: return _NSIG + EXC_BREAKPOINT;
1683 #if defined (SIGINFO)
1684 case TARGET_SIGNAL_INFO: return SIGINFO;
1688 #if defined (REALTIME_LO)
1689 if (oursig >= TARGET_SIGNAL_REALTIME_33
1690 && oursig <= TARGET_SIGNAL_REALTIME_63)
1693 (int)oursig - (int)TARGET_SIGNAL_REALTIME_33 + REALTIME_LO;
1694 if (retsig < REALTIME_HI)
1698 /* The user might be trying to do "signal SIGSAK" where this system
1699 doesn't have SIGSAK. */
1700 warning ("Signal %s does not exist on this system.\n",
1701 target_signal_to_name (oursig));
1706 /* Helper function for child_wait and the Lynx derivatives of child_wait.
1707 HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
1708 translation of that in OURSTATUS. */
1710 store_waitstatus (ourstatus, hoststatus)
1711 struct target_waitstatus *ourstatus;
1714 #ifdef CHILD_SPECIAL_WAITSTATUS
1715 /* CHILD_SPECIAL_WAITSTATUS should return nonzero and set *OURSTATUS
1716 if it wants to deal with hoststatus. */
1717 if (CHILD_SPECIAL_WAITSTATUS (ourstatus, hoststatus))
1721 if (WIFEXITED (hoststatus))
1723 ourstatus->kind = TARGET_WAITKIND_EXITED;
1724 ourstatus->value.integer = WEXITSTATUS (hoststatus);
1726 else if (!WIFSTOPPED (hoststatus))
1728 ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
1729 ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus));
1733 ourstatus->kind = TARGET_WAITKIND_STOPPED;
1734 ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus));
1738 /* In some circumstances we allow a command to specify a numeric
1739 signal. The idea is to keep these circumstances limited so that
1740 users (and scripts) develop portable habits. For comparison,
1741 POSIX.2 `kill' requires that 1,2,3,6,9,14, and 15 work (and using a
1742 numeric signal at all is obscelescent. We are slightly more
1743 lenient and allow 1-15 which should match host signal numbers on
1744 most systems. Use of symbolic signal names is strongly encouraged. */
1747 target_signal_from_command (num)
1750 if (num >= 1 && num <= 15)
1751 return (enum target_signal)num;
1752 error ("Only signals 1-15 are valid as numeric signals.\n\
1753 Use \"info signals\" for a list of symbolic signals.");
1756 /* Returns zero to leave the inferior alone, one to interrupt it. */
1757 int (*target_activity_function) PARAMS ((void));
1758 int target_activity_fd;
1760 /* Convert a normal process ID to a string. Returns the string in a static
1764 normal_pid_to_str (pid)
1767 static char buf[30];
1769 if (STREQ (current_target.to_shortname, "remote"))
1770 sprintf (buf, "thread %d\0", pid);
1772 sprintf (buf, "process %d\0", pid);
1777 /* Some targets (such as ttrace-based HPUX) don't allow us to request
1778 notification of inferior events such as fork and vork immediately
1779 after the inferior is created. (This because of how gdb gets an
1780 inferior created via invoking a shell to do it. In such a scenario,
1781 if the shell init file has commands in it, the shell will fork and
1782 exec for each of those commands, and we will see each such fork
1785 This function is used by all targets that allow us to request
1786 notification of forks, etc at inferior creation time; e.g., in
1787 target_acknowledge_forked_child.
1790 normal_target_post_startup_inferior (pid)
1793 /* This space intentionally left blank. */
1796 /* Set up the handful of non-empty slots needed by the dummy target
1800 init_dummy_target ()
1802 dummy_target.to_shortname = "None";
1803 dummy_target.to_longname = "None";
1804 dummy_target.to_doc = "";
1805 dummy_target.to_attach = find_default_attach;
1806 dummy_target.to_require_attach = find_default_require_attach;
1807 dummy_target.to_require_detach = find_default_require_detach;
1808 dummy_target.to_create_inferior = find_default_create_inferior;
1809 dummy_target.to_clone_and_follow_inferior = find_default_clone_and_follow_inferior;
1810 dummy_target.to_stratum = dummy_stratum;
1811 dummy_target.to_magic = OPS_MAGIC;
1815 static struct target_ops debug_target;
1818 debug_to_open (args, from_tty)
1822 debug_target.to_open (args, from_tty);
1824 fprintf_unfiltered (gdb_stderr, "target_open (%s, %d)\n", args, from_tty);
1828 debug_to_close (quitting)
1831 debug_target.to_close (quitting);
1833 fprintf_unfiltered (gdb_stderr, "target_close (%d)\n", quitting);
1837 debug_to_attach (args, from_tty)
1841 debug_target.to_attach (args, from_tty);
1843 fprintf_unfiltered (gdb_stderr, "target_attach (%s, %d)\n", args, from_tty);
1848 debug_to_post_attach (pid)
1851 debug_target.to_post_attach (pid);
1853 fprintf_unfiltered (gdb_stderr, "target_post_attach (%d)\n", pid);
1857 debug_to_require_attach (args, from_tty)
1861 debug_target.to_require_attach (args, from_tty);
1863 fprintf_unfiltered (gdb_stderr,
1864 "target_require_attach (%s, %d)\n", args, from_tty);
1868 debug_to_detach (args, from_tty)
1872 debug_target.to_detach (args, from_tty);
1874 fprintf_unfiltered (gdb_stderr, "target_detach (%s, %d)\n", args, from_tty);
1878 debug_to_require_detach (pid, args, from_tty)
1883 debug_target.to_require_detach (pid, args, from_tty);
1885 fprintf_unfiltered (gdb_stderr,
1886 "target_require_detach (%d, %s, %d)\n", pid, args, from_tty);
1890 debug_to_resume (pid, step, siggnal)
1893 enum target_signal siggnal;
1895 debug_target.to_resume (pid, step, siggnal);
1897 fprintf_unfiltered (gdb_stderr, "target_resume (%d, %s, %s)\n", pid,
1898 step ? "step" : "continue",
1899 target_signal_to_name (siggnal));
1903 debug_to_wait (pid, status)
1905 struct target_waitstatus *status;
1909 retval = debug_target.to_wait (pid, status);
1911 fprintf_unfiltered (gdb_stderr,
1912 "target_wait (%d, status) = %d, ", pid, retval);
1913 fprintf_unfiltered (gdb_stderr, "status->kind = ");
1914 switch (status->kind)
1916 case TARGET_WAITKIND_EXITED:
1917 fprintf_unfiltered (gdb_stderr, "exited, status = %d\n",
1918 status->value.integer);
1920 case TARGET_WAITKIND_STOPPED:
1921 fprintf_unfiltered (gdb_stderr, "stopped, signal = %s\n",
1922 target_signal_to_name (status->value.sig));
1924 case TARGET_WAITKIND_SIGNALLED:
1925 fprintf_unfiltered (gdb_stderr, "signalled, signal = %s\n",
1926 target_signal_to_name (status->value.sig));
1928 case TARGET_WAITKIND_LOADED:
1929 fprintf_unfiltered (gdb_stderr, "loaded\n");
1931 case TARGET_WAITKIND_FORKED:
1932 fprintf_unfiltered (gdb_stderr, "forked\n");
1934 case TARGET_WAITKIND_VFORKED:
1935 fprintf_unfiltered (gdb_stderr, "vforked\n");
1937 case TARGET_WAITKIND_EXECD:
1938 fprintf_unfiltered (gdb_stderr, "execd\n");
1940 case TARGET_WAITKIND_SPURIOUS:
1941 fprintf_unfiltered (gdb_stderr, "spurious\n");
1944 fprintf_unfiltered (gdb_stderr, "unknown???\n");
1952 debug_to_post_wait (pid, status)
1956 debug_target.to_post_wait (pid, status);
1958 fprintf_unfiltered (gdb_stderr, "target_post_wait (%d, %d)\n",
1963 debug_to_fetch_registers (regno)
1966 debug_target.to_fetch_registers (regno);
1968 fprintf_unfiltered (gdb_stderr, "target_fetch_registers (%s)",
1969 regno != -1 ? REGISTER_NAME (regno) : "-1");
1971 fprintf_unfiltered (gdb_stderr, " = 0x%x %d",
1972 (unsigned long) read_register (regno),
1973 read_register (regno));
1974 fprintf_unfiltered (gdb_stderr, "\n");
1978 debug_to_store_registers (regno)
1981 debug_target.to_store_registers (regno);
1983 if (regno >= 0 && regno < NUM_REGS)
1984 fprintf_unfiltered (gdb_stderr, "target_store_registers (%s) = 0x%x %d\n",
1985 REGISTER_NAME (regno),
1986 (unsigned long) read_register (regno),
1987 (unsigned long) read_register (regno));
1989 fprintf_unfiltered (gdb_stderr, "target_store_registers (%d)\n", regno);
1993 debug_to_prepare_to_store ()
1995 debug_target.to_prepare_to_store ();
1997 fprintf_unfiltered (gdb_stderr, "target_prepare_to_store ()\n");
2001 debug_to_xfer_memory (memaddr, myaddr, len, write, target)
2006 struct target_ops *target;
2010 retval = debug_target.to_xfer_memory (memaddr, myaddr, len, write, target);
2012 fprintf_unfiltered (gdb_stderr,
2013 "target_xfer_memory (0x%x, xxx, %d, %s, xxx) = %d",
2014 (unsigned int) memaddr, /* possable truncate long long */
2015 len, write ? "write" : "read", retval);
2023 fputs_unfiltered (", bytes =", gdb_stderr);
2024 for (i = 0; i < retval; i++)
2026 if ((((long) &(myaddr[i])) & 0xf) == 0)
2027 fprintf_unfiltered (gdb_stderr, "\n");
2028 fprintf_unfiltered (gdb_stderr, " %02x", myaddr[i] & 0xff);
2032 fputc_unfiltered ('\n', gdb_stderr);
2038 debug_to_files_info (target)
2039 struct target_ops *target;
2041 debug_target.to_files_info (target);
2043 fprintf_unfiltered (gdb_stderr, "target_files_info (xxx)\n");
2047 debug_to_insert_breakpoint (addr, save)
2053 retval = debug_target.to_insert_breakpoint (addr, save);
2055 fprintf_unfiltered (gdb_stderr,
2056 "target_insert_breakpoint (0x%x, xxx) = %d\n",
2057 (unsigned long) addr, retval);
2062 debug_to_remove_breakpoint (addr, save)
2068 retval = debug_target.to_remove_breakpoint (addr, save);
2070 fprintf_unfiltered (gdb_stderr,
2071 "target_remove_breakpoint (0x%x, xxx) = %d\n",
2072 (unsigned long)addr, retval);
2077 debug_to_terminal_init ()
2079 debug_target.to_terminal_init ();
2081 fprintf_unfiltered (gdb_stderr, "target_terminal_init ()\n");
2085 debug_to_terminal_inferior ()
2087 debug_target.to_terminal_inferior ();
2089 fprintf_unfiltered (gdb_stderr, "target_terminal_inferior ()\n");
2093 debug_to_terminal_ours_for_output ()
2095 debug_target.to_terminal_ours_for_output ();
2097 fprintf_unfiltered (gdb_stderr, "target_terminal_ours_for_output ()\n");
2101 debug_to_terminal_ours ()
2103 debug_target.to_terminal_ours ();
2105 fprintf_unfiltered (gdb_stderr, "target_terminal_ours ()\n");
2109 debug_to_terminal_info (arg, from_tty)
2113 debug_target.to_terminal_info (arg, from_tty);
2115 fprintf_unfiltered (gdb_stderr, "target_terminal_info (%s, %d)\n", arg,
2122 debug_target.to_kill ();
2124 fprintf_unfiltered (gdb_stderr, "target_kill ()\n");
2128 debug_to_load (args, from_tty)
2132 debug_target.to_load (args, from_tty);
2134 fprintf_unfiltered (gdb_stderr, "target_load (%s, %d)\n", args, from_tty);
2138 debug_to_lookup_symbol (name, addrp)
2144 retval = debug_target.to_lookup_symbol (name, addrp);
2146 fprintf_unfiltered (gdb_stderr, "target_lookup_symbol (%s, xxx)\n", name);
2152 debug_to_create_inferior (exec_file, args, env)
2157 debug_target.to_create_inferior (exec_file, args, env);
2159 fprintf_unfiltered (gdb_stderr, "target_create_inferior (%s, %s, xxx)\n",
2164 debug_to_post_startup_inferior (pid)
2167 debug_target.to_post_startup_inferior (pid);
2169 fprintf_unfiltered (gdb_stderr, "target_post_startup_inferior (%d)\n",
2174 debug_to_acknowledge_created_inferior (pid)
2177 debug_target.to_acknowledge_created_inferior (pid);
2179 fprintf_unfiltered (gdb_stderr, "target_acknowledge_created_inferior (%d)\n",
2184 debug_to_clone_and_follow_inferior (child_pid, followed_child)
2186 int *followed_child;
2188 debug_target.to_clone_and_follow_inferior (child_pid, followed_child);
2190 fprintf_unfiltered (gdb_stderr,
2191 "target_clone_and_follow_inferior (%d, %d)\n",
2192 child_pid, *followed_child);
2196 debug_to_post_follow_inferior_by_clone ()
2198 debug_target.to_post_follow_inferior_by_clone ();
2200 fprintf_unfiltered (gdb_stderr, "target_post_follow_inferior_by_clone ()\n");
2204 debug_to_insert_fork_catchpoint (pid)
2209 retval = debug_target.to_insert_fork_catchpoint (pid);
2211 fprintf_unfiltered (gdb_stderr, "target_insert_fork_catchpoint (%d) = %d\n",
2218 debug_to_remove_fork_catchpoint (pid)
2223 retval = debug_target.to_remove_fork_catchpoint (pid);
2225 fprintf_unfiltered (gdb_stderr, "target_remove_fork_catchpoint (%d) = %d\n",
2232 debug_to_insert_vfork_catchpoint (pid)
2237 retval = debug_target.to_insert_vfork_catchpoint (pid);
2239 fprintf_unfiltered (gdb_stderr, "target_insert_vfork_catchpoint (%d)= %d\n",
2246 debug_to_remove_vfork_catchpoint (pid)
2251 retval = debug_target.to_remove_vfork_catchpoint (pid);
2253 fprintf_unfiltered (gdb_stderr, "target_remove_vfork_catchpoint (%d) = %d\n",
2260 debug_to_has_forked (pid, child_pid)
2266 has_forked = debug_target.to_has_forked (pid, child_pid);
2268 fprintf_unfiltered (gdb_stderr, "target_has_forked (%d, %d) = %d\n",
2269 pid, *child_pid, has_forked);
2275 debug_to_has_vforked (pid, child_pid)
2281 has_vforked = debug_target.to_has_vforked (pid, child_pid);
2283 fprintf_unfiltered (gdb_stderr, "target_has_vforked (%d, %d) = %d\n",
2284 pid, *child_pid, has_vforked);
2290 debug_to_can_follow_vfork_prior_to_exec ()
2292 int can_immediately_follow_vfork;
2294 can_immediately_follow_vfork = debug_target.to_can_follow_vfork_prior_to_exec ();
2296 fprintf_unfiltered (gdb_stderr, "target_can_follow_vfork_prior_to_exec () = %d\n",
2297 can_immediately_follow_vfork);
2299 return can_immediately_follow_vfork;
2303 debug_to_post_follow_vfork (parent_pid, followed_parent, child_pid, followed_child)
2305 int followed_parent;
2309 debug_target.to_post_follow_vfork (parent_pid, followed_parent, child_pid, followed_child);
2311 fprintf_unfiltered (gdb_stderr,
2312 "target_post_follow_vfork (%d, %d, %d, %d)\n",
2313 parent_pid, followed_parent, child_pid, followed_child);
2317 debug_to_insert_exec_catchpoint (pid)
2322 retval = debug_target.to_insert_exec_catchpoint (pid);
2324 fprintf_unfiltered (gdb_stderr, "target_insert_exec_catchpoint (%d) = %d\n",
2331 debug_to_remove_exec_catchpoint (pid)
2336 retval = debug_target.to_remove_exec_catchpoint (pid);
2338 fprintf_unfiltered (gdb_stderr, "target_remove_exec_catchpoint (%d) = %d\n",
2345 debug_to_has_execd (pid, execd_pathname)
2347 char ** execd_pathname;
2351 has_execd = debug_target.to_has_execd (pid, execd_pathname);
2353 fprintf_unfiltered (gdb_stderr, "target_has_execd (%d, %s) = %d\n",
2354 pid, (*execd_pathname ? *execd_pathname : "<NULL>"),
2361 debug_to_reported_exec_events_per_exec_call ()
2363 int reported_exec_events;
2365 reported_exec_events = debug_target.to_reported_exec_events_per_exec_call ();
2367 fprintf_unfiltered (gdb_stderr,
2368 "target_reported_exec_events_per_exec_call () = %d\n",
2369 reported_exec_events);
2371 return reported_exec_events;
2375 debug_to_has_syscall_event (pid, kind, syscall_id)
2377 enum target_waitkind * kind;
2380 int has_syscall_event;
2381 char * kind_spelling = "??";
2383 has_syscall_event = debug_target.to_has_syscall_event (pid, kind, syscall_id);
2384 if (has_syscall_event)
2388 case TARGET_WAITKIND_SYSCALL_ENTRY:
2389 kind_spelling = "SYSCALL_ENTRY";
2391 case TARGET_WAITKIND_SYSCALL_RETURN:
2392 kind_spelling = "SYSCALL_RETURN";
2399 fprintf_unfiltered (gdb_stderr,
2400 "target_has_syscall_event (%d, %s, %d) = %d\n",
2401 pid, kind_spelling, *syscall_id, has_syscall_event);
2403 return has_syscall_event;
2407 debug_to_has_exited (pid, wait_status, exit_status)
2414 has_exited = debug_target.to_has_exited (pid, wait_status, exit_status);
2416 fprintf_unfiltered (gdb_stderr, "target_has_exited (%d, %d, %d) = %d\n",
2417 pid, wait_status, *exit_status, has_exited);
2423 debug_to_mourn_inferior ()
2425 debug_target.to_mourn_inferior ();
2427 fprintf_unfiltered (gdb_stderr, "target_mourn_inferior ()\n");
2435 retval = debug_target.to_can_run ();
2437 fprintf_unfiltered (gdb_stderr, "target_can_run () = %d\n", retval);
2443 debug_to_notice_signals (pid)
2446 debug_target.to_notice_signals (pid);
2448 fprintf_unfiltered (gdb_stderr, "target_notice_signals (%d)\n", pid);
2452 debug_to_thread_alive (pid)
2457 retval = debug_target.to_thread_alive (pid);
2459 fprintf_unfiltered (gdb_stderr, "target_thread_alive (%d) = %d\n",
2468 debug_target.to_stop ();
2470 fprintf_unfiltered (gdb_stderr, "target_stop ()\n");
2474 debug_to_query (type, req, resp, siz)
2482 retval = debug_target.to_query (type, req, resp, siz);
2484 fprintf_unfiltered (gdb_stderr, "target_query (%c, %s, %s, %d) = %d\n", type, req, resp, *siz, retval);
2489 static struct symtab_and_line *
2490 debug_to_enable_exception_callback (kind, enable)
2491 enum exception_event_kind kind;
2494 struct symtab_and_line *result;
2495 result = debug_target.to_enable_exception_callback (kind, enable);
2496 fprintf_unfiltered (gdb_stderr,
2497 "target get_exception_callback_sal (%d, %d)\n",
2502 static struct exception_event_record *
2503 debug_to_get_current_exception_event ()
2505 struct exception_event_record *result;
2506 result = debug_target.to_get_current_exception_event();
2507 fprintf_unfiltered (gdb_stderr, "target get_current_exception_event ()\n");
2512 debug_to_pid_to_exec_file (pid)
2517 exec_file = debug_target.to_pid_to_exec_file (pid);
2519 fprintf_unfiltered (gdb_stderr, "target_pid_to_exec_file (%d) = %s\n",
2526 debug_to_core_file_to_sym_file (core)
2531 sym_file = debug_target.to_core_file_to_sym_file (core);
2533 fprintf_unfiltered (gdb_stderr, "target_core_file_to_sym_file (%s) = %s\n",
2540 setup_target_debug ()
2542 memcpy (&debug_target, ¤t_target, sizeof debug_target);
2544 current_target.to_open = debug_to_open;
2545 current_target.to_close = debug_to_close;
2546 current_target.to_attach = debug_to_attach;
2547 current_target.to_post_attach = debug_to_post_attach;
2548 current_target.to_require_attach = debug_to_require_attach;
2549 current_target.to_detach = debug_to_detach;
2550 current_target.to_require_detach = debug_to_require_detach;
2551 current_target.to_resume = debug_to_resume;
2552 current_target.to_wait = debug_to_wait;
2553 current_target.to_post_wait = debug_to_post_wait;
2554 current_target.to_fetch_registers = debug_to_fetch_registers;
2555 current_target.to_store_registers = debug_to_store_registers;
2556 current_target.to_prepare_to_store = debug_to_prepare_to_store;
2557 current_target.to_xfer_memory = debug_to_xfer_memory;
2558 current_target.to_files_info = debug_to_files_info;
2559 current_target.to_insert_breakpoint = debug_to_insert_breakpoint;
2560 current_target.to_remove_breakpoint = debug_to_remove_breakpoint;
2561 current_target.to_terminal_init = debug_to_terminal_init;
2562 current_target.to_terminal_inferior = debug_to_terminal_inferior;
2563 current_target.to_terminal_ours_for_output = debug_to_terminal_ours_for_output;
2564 current_target.to_terminal_ours = debug_to_terminal_ours;
2565 current_target.to_terminal_info = debug_to_terminal_info;
2566 current_target.to_kill = debug_to_kill;
2567 current_target.to_load = debug_to_load;
2568 current_target.to_lookup_symbol = debug_to_lookup_symbol;
2569 current_target.to_create_inferior = debug_to_create_inferior;
2570 current_target.to_post_startup_inferior = debug_to_post_startup_inferior;
2571 current_target.to_acknowledge_created_inferior = debug_to_acknowledge_created_inferior;
2572 current_target.to_clone_and_follow_inferior = debug_to_clone_and_follow_inferior;
2573 current_target.to_post_follow_inferior_by_clone = debug_to_post_follow_inferior_by_clone;
2574 current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint;
2575 current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint;
2576 current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint;
2577 current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint;
2578 current_target.to_has_forked = debug_to_has_forked;
2579 current_target.to_has_vforked = debug_to_has_vforked;
2580 current_target.to_can_follow_vfork_prior_to_exec = debug_to_can_follow_vfork_prior_to_exec;
2581 current_target.to_post_follow_vfork = debug_to_post_follow_vfork;
2582 current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint;
2583 current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint;
2584 current_target.to_has_execd = debug_to_has_execd;
2585 current_target.to_reported_exec_events_per_exec_call = debug_to_reported_exec_events_per_exec_call;
2586 current_target.to_has_syscall_event = debug_to_has_syscall_event;
2587 current_target.to_has_exited = debug_to_has_exited;
2588 current_target.to_mourn_inferior = debug_to_mourn_inferior;
2589 current_target.to_can_run = debug_to_can_run;
2590 current_target.to_notice_signals = debug_to_notice_signals;
2591 current_target.to_thread_alive = debug_to_thread_alive;
2592 current_target.to_stop = debug_to_stop;
2593 current_target.to_query = debug_to_query;
2594 current_target.to_enable_exception_callback = debug_to_enable_exception_callback;
2595 current_target.to_get_current_exception_event = debug_to_get_current_exception_event;
2596 current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file;
2597 current_target.to_core_file_to_sym_file = debug_to_core_file_to_sym_file;
2602 static char targ_desc[] =
2603 "Names of targets and files being debugged.\n\
2604 Shows the entire stack of targets currently in use (including the exec-file,\n\
2605 core-file, and process, if any), as well as the symbol file name.";
2608 initialize_targets ()
2610 init_dummy_target ();
2611 push_target (&dummy_target);
2613 add_info ("target", target_info, targ_desc);
2614 add_info ("files", target_info, targ_desc);
2617 add_set_cmd ("targetdebug", class_maintenance, var_zinteger,
2618 (char *)&targetdebug,
2619 "Set target debugging.\n\
2620 When non-zero, target debugging is enabled.", &setlist),
2623 if (!STREQ (signals[TARGET_SIGNAL_LAST].string, "TARGET_SIGNAL_MAGIC"))