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 /* Transfer LEN bytes between target address MEMADDR and GDB address MYADDR.
86 Returns 0 for success, errno code for failure (which includes partial
87 transfers--if you want a more useful response to partial transfers, try
88 target_read_memory_partial). */
91 target_xfer_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, int len,
92 int write, asection *bfd_section));
94 static void init_dummy_target PARAMS ((void));
97 debug_to_open PARAMS ((char *, int));
100 debug_to_close PARAMS ((int));
103 debug_to_attach PARAMS ((char *, int));
106 debug_to_detach PARAMS ((char *, int));
109 debug_to_resume PARAMS ((int, int, enum target_signal));
112 debug_to_wait PARAMS ((int, struct target_waitstatus *));
115 debug_to_fetch_registers PARAMS ((int));
118 debug_to_store_registers PARAMS ((int));
121 debug_to_prepare_to_store PARAMS ((void));
124 debug_to_xfer_memory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *));
127 debug_to_files_info PARAMS ((struct target_ops *));
130 debug_to_insert_breakpoint PARAMS ((CORE_ADDR, char *));
133 debug_to_remove_breakpoint PARAMS ((CORE_ADDR, char *));
136 debug_to_terminal_init PARAMS ((void));
139 debug_to_terminal_inferior PARAMS ((void));
142 debug_to_terminal_ours_for_output PARAMS ((void));
145 debug_to_terminal_ours PARAMS ((void));
148 debug_to_terminal_info PARAMS ((char *, int));
151 debug_to_kill PARAMS ((void));
154 debug_to_load PARAMS ((char *, int));
157 debug_to_lookup_symbol PARAMS ((char *, CORE_ADDR *));
160 debug_to_create_inferior PARAMS ((char *, char *, char **));
163 debug_to_mourn_inferior PARAMS ((void));
166 debug_to_can_run PARAMS ((void));
169 debug_to_notice_signals PARAMS ((int));
172 debug_to_thread_alive PARAMS ((int));
175 debug_to_stop PARAMS ((void));
177 static int debug_to_query PARAMS ((int/*char*/, char *, char *, int *));
179 /* Pointer to array of target architecture structures; the size of the
180 array; the current index into the array; the allocated size of the
182 struct target_ops **target_structs;
183 unsigned target_struct_size;
184 unsigned target_struct_index;
185 unsigned target_struct_allocsize;
186 #define DEFAULT_ALLOCSIZE 10
188 /* The initial current target, so that there is always a semi-valid
191 static struct target_ops dummy_target;
193 /* Top of target stack. */
195 struct target_stack_item *target_stack;
197 /* The target structure we are currently using to talk to a process
198 or file or whatever "inferior" we have. */
200 struct target_ops current_target;
202 /* Command list for target. */
204 static struct cmd_list_element *targetlist = NULL;
206 /* Nonzero if we are debugging an attached outside process
207 rather than an inferior. */
211 /* Non-zero if we want to see trace of target level stuff. */
213 static int targetdebug = 0;
215 static void setup_target_debug PARAMS ((void));
217 /* The user just typed 'target' without the name of a target. */
221 target_command (arg, from_tty)
225 fputs_filtered ("Argument required (target name). Try `help target'\n",
229 /* Add a possible target architecture to the list. */
233 struct target_ops *t;
237 target_struct_allocsize = DEFAULT_ALLOCSIZE;
238 target_structs = (struct target_ops **) xmalloc
239 (target_struct_allocsize * sizeof (*target_structs));
241 if (target_struct_size >= target_struct_allocsize)
243 target_struct_allocsize *= 2;
244 target_structs = (struct target_ops **)
245 xrealloc ((char *) target_structs,
246 target_struct_allocsize * sizeof (*target_structs));
248 target_structs[target_struct_size++] = t;
249 /* cleanup_target (t);*/
251 if (targetlist == NULL)
252 add_prefix_cmd ("target", class_run, target_command,
253 "Connect to a target machine or process.\n\
254 The first argument is the type or protocol of the target machine.\n\
255 Remaining arguments are interpreted by the target protocol. For more\n\
256 information on the arguments for a particular protocol, type\n\
257 `help target ' followed by the protocol name.",
258 &targetlist, "target ", 0, &cmdlist);
259 add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist);
271 nomemory (memaddr, myaddr, len, write, t)
276 struct target_ops *t;
278 errno = EIO; /* Can't read/write this location */
279 return 0; /* No bytes handled */
285 error ("You can't do that when your target is `%s'",
286 current_target.to_shortname);
292 error ("You can't do that without a process to debug.");
297 nosymbol (name, addrp)
301 return 1; /* Symbol does not exist in target env */
311 error ("No run-time support for this");
317 default_terminal_info (args, from_tty)
321 printf_unfiltered("No saved terminal information.\n");
324 /* This is the default target_create_inferior and target_attach function.
325 If the current target is executing, it asks whether to kill it off.
326 If this function returns without calling error(), it has killed off
327 the target, and the operation should be attempted. */
330 kill_or_be_killed (from_tty)
333 if (target_has_execution)
335 printf_unfiltered ("You are already running a program:\n");
336 target_files_info ();
337 if (query ("Kill it? ")) {
339 if (target_has_execution)
340 error ("Killing the program did not help.");
343 error ("Program not killed.");
350 maybe_kill_then_attach (args, from_tty)
354 kill_or_be_killed (from_tty);
355 target_attach (args, from_tty);
359 maybe_kill_then_create_inferior (exec, args, env)
364 kill_or_be_killed (0);
365 target_create_inferior (exec, args, env);
369 default_clone_and_follow_inferior (child_pid, followed_child)
373 target_clone_and_follow_inferior (child_pid, followed_child);
376 /* Clean up a target struct so it no longer has any zero pointers in it.
377 We default entries, at least to stubs that print error messages. */
381 struct target_ops *t;
384 #define de_fault(field, value) \
385 if (!t->field) t->field = value
387 /* FIELD DEFAULT VALUE */
389 de_fault (to_open, (void (*) PARAMS((char *, int))) tcomplain);
390 de_fault (to_close, (void (*) PARAMS((int))) target_ignore);
391 de_fault (to_attach, maybe_kill_then_attach);
392 de_fault (to_post_attach, (void (*) PARAMS ((int))) target_ignore);
393 de_fault (to_require_attach, maybe_kill_then_attach);
394 de_fault (to_detach, (void (*) PARAMS((char *, int))) target_ignore);
395 de_fault (to_require_detach, (void (*) PARAMS((int, char *, int))) target_ignore);
396 de_fault (to_resume, (void (*) PARAMS((int, int, enum target_signal))) noprocess);
397 de_fault (to_wait, (int (*) PARAMS((int, struct target_waitstatus *))) noprocess);
398 de_fault (to_post_wait, (void (*) PARAMS ((int, int))) target_ignore);
399 de_fault (to_fetch_registers, (void (*) PARAMS((int))) target_ignore);
400 de_fault (to_store_registers, (void (*) PARAMS((int))) noprocess);
401 de_fault (to_prepare_to_store, (void (*) PARAMS((void))) noprocess);
402 de_fault (to_xfer_memory, (int (*) PARAMS((CORE_ADDR, char *, int, int, struct target_ops *))) nomemory);
403 de_fault (to_files_info, (void (*) PARAMS((struct target_ops *))) target_ignore);
404 de_fault (to_insert_breakpoint, memory_insert_breakpoint);
405 de_fault (to_remove_breakpoint, memory_remove_breakpoint);
406 de_fault (to_terminal_init, (void (*) PARAMS((void))) target_ignore);
407 de_fault (to_terminal_inferior, (void (*) PARAMS ((void))) target_ignore);
408 de_fault (to_terminal_ours_for_output,(void (*) PARAMS ((void))) target_ignore);
409 de_fault (to_terminal_ours, (void (*) PARAMS ((void))) target_ignore);
410 de_fault (to_terminal_info, default_terminal_info);
411 de_fault (to_kill, (void (*) PARAMS((void))) noprocess);
412 de_fault (to_load, (void (*) PARAMS((char *, int))) tcomplain);
413 de_fault (to_lookup_symbol, (int (*) PARAMS ((char *, CORE_ADDR *))) nosymbol);
414 de_fault (to_create_inferior, maybe_kill_then_create_inferior);
415 de_fault (to_post_startup_inferior, (void (*) PARAMS ((int))) target_ignore);
416 de_fault (to_acknowledge_created_inferior, (void (*) PARAMS((int))) target_ignore);
417 de_fault (to_clone_and_follow_inferior, default_clone_and_follow_inferior);
418 de_fault (to_post_follow_inferior_by_clone, (void (*) PARAMS ((void))) target_ignore);
419 de_fault (to_insert_fork_catchpoint, (int (*) PARAMS ((int))) tcomplain);
420 de_fault (to_remove_fork_catchpoint, (int (*) PARAMS ((int))) tcomplain);
421 de_fault (to_insert_vfork_catchpoint, (int (*) PARAMS ((int))) tcomplain);
422 de_fault (to_remove_vfork_catchpoint, (int (*) PARAMS ((int))) tcomplain);
423 de_fault (to_has_forked, (int (*) PARAMS ((int, int *))) return_zero);
424 de_fault (to_has_vforked, (int (*) PARAMS ((int, int *))) return_zero);
425 de_fault (to_can_follow_vfork_prior_to_exec, (int (*) PARAMS ((void ))) return_zero);
426 de_fault (to_post_follow_vfork, (void (*) PARAMS ((int, int, int, int))) target_ignore);
427 de_fault (to_insert_exec_catchpoint, (int (*) PARAMS ((int))) tcomplain);
428 de_fault (to_remove_exec_catchpoint, (int (*) PARAMS ((int))) tcomplain);
429 de_fault (to_has_execd, (int (*) PARAMS ((int, char **))) return_zero);
430 de_fault (to_reported_exec_events_per_exec_call, (int (*) PARAMS ((void))) return_one);
431 de_fault (to_has_syscall_event, (int (*) PARAMS ((int, enum target_waitkind *, int *))) return_zero);
432 de_fault (to_has_exited, (int (*) PARAMS ((int, int, int *))) return_zero);
433 de_fault (to_mourn_inferior, (void (*) PARAMS ((void))) noprocess);
434 de_fault (to_can_run, return_zero);
435 de_fault (to_notice_signals, (void (*) PARAMS((int))) target_ignore);
436 de_fault (to_thread_alive, (int (*) PARAMS((int))) target_ignore);
437 de_fault (to_stop, (void (*) PARAMS((void))) target_ignore);
438 de_fault (to_query, (int (*) PARAMS((int/*char*/, char*, char *, int *))) target_ignore);
439 de_fault (to_enable_exception_callback, (struct symtab_and_line * (*) PARAMS((enum exception_event_kind, int))) nosupport_runtime);
440 de_fault (to_get_current_exception_event, (struct exception_event_record * (*) PARAMS((void))) nosupport_runtime);
442 de_fault (to_pid_to_exec_file, (char* (*) PARAMS((int))) return_zero);
443 de_fault (to_core_file_to_sym_file, (char* (*) PARAMS ((char *))) return_zero);
447 /* Go through the target stack from top to bottom, copying over zero entries in
448 current_target. In effect, we are doing class inheritance through the
449 pushed target vectors. */
452 update_current_target ()
454 struct target_stack_item *item;
455 struct target_ops *t;
457 /* First, reset current_target */
458 memset (¤t_target, 0, sizeof current_target);
460 for (item = target_stack; item; item = item->next)
462 t = item->target_ops;
464 #define INHERIT(FIELD, TARGET) \
465 if (!current_target.FIELD) \
466 current_target.FIELD = TARGET->FIELD
468 INHERIT (to_shortname, t);
469 INHERIT (to_longname, t);
471 INHERIT (to_open, t);
472 INHERIT (to_close, t);
473 INHERIT (to_attach, t);
474 INHERIT (to_post_attach, t);
475 INHERIT (to_require_attach, t);
476 INHERIT (to_detach, t);
477 INHERIT (to_require_detach, t);
478 INHERIT (to_resume, t);
479 INHERIT (to_wait, t);
480 INHERIT (to_post_wait, t);
481 INHERIT (to_fetch_registers, t);
482 INHERIT (to_store_registers, t);
483 INHERIT (to_prepare_to_store, t);
484 INHERIT (to_xfer_memory, t);
485 INHERIT (to_files_info, t);
486 INHERIT (to_insert_breakpoint, t);
487 INHERIT (to_remove_breakpoint, t);
488 INHERIT (to_terminal_init, t);
489 INHERIT (to_terminal_inferior, t);
490 INHERIT (to_terminal_ours_for_output, t);
491 INHERIT (to_terminal_ours, t);
492 INHERIT (to_terminal_info, t);
493 INHERIT (to_kill, t);
494 INHERIT (to_load, t);
495 INHERIT (to_lookup_symbol, t);
496 INHERIT (to_create_inferior, t);
497 INHERIT (to_post_startup_inferior, t);
498 INHERIT (to_acknowledge_created_inferior, t);
499 INHERIT (to_clone_and_follow_inferior, t);
500 INHERIT (to_post_follow_inferior_by_clone, t);
501 INHERIT (to_insert_fork_catchpoint, t);
502 INHERIT (to_remove_fork_catchpoint, t);
503 INHERIT (to_insert_vfork_catchpoint, t);
504 INHERIT (to_remove_vfork_catchpoint, t);
505 INHERIT (to_has_forked, t);
506 INHERIT (to_has_vforked, t);
507 INHERIT (to_can_follow_vfork_prior_to_exec, t);
508 INHERIT (to_post_follow_vfork, t);
509 INHERIT (to_insert_exec_catchpoint, t);
510 INHERIT (to_remove_exec_catchpoint, t);
511 INHERIT (to_has_execd, t);
512 INHERIT (to_reported_exec_events_per_exec_call, t);
513 INHERIT (to_has_syscall_event, t);
514 INHERIT (to_has_exited, t);
515 INHERIT (to_mourn_inferior, t);
516 INHERIT (to_can_run, t);
517 INHERIT (to_notice_signals, t);
518 INHERIT (to_thread_alive, t);
519 INHERIT (to_stop, t);
520 INHERIT (to_query, t);
521 INHERIT (to_enable_exception_callback, t);
522 INHERIT (to_get_current_exception_event, t);
523 INHERIT (to_pid_to_exec_file, t);
524 INHERIT (to_core_file_to_sym_file, t);
525 INHERIT (to_stratum, t);
526 INHERIT (DONT_USE, t);
527 INHERIT (to_has_all_memory, t);
528 INHERIT (to_has_memory, t);
529 INHERIT (to_has_stack, t);
530 INHERIT (to_has_registers, t);
531 INHERIT (to_has_execution, t);
532 INHERIT (to_has_thread_control, t);
533 INHERIT (to_sections, t);
534 INHERIT (to_sections_end, t);
535 INHERIT (to_magic, t);
541 /* Push a new target type into the stack of the existing target accessors,
542 possibly superseding some of the existing accessors.
544 Result is zero if the pushed target ended up on top of the stack,
545 nonzero if at least one target is on top of it.
547 Rather than allow an empty stack, we always have the dummy target at
548 the bottom stratum, so we can call the function vectors without
553 struct target_ops *t;
555 struct target_stack_item *cur, *prev, *tmp;
557 /* Check magic number. If wrong, it probably means someone changed
558 the struct definition, but not all the places that initialize one. */
559 if (t->to_magic != OPS_MAGIC)
561 fprintf_unfiltered(gdb_stderr,
562 "Magic number of %s target struct wrong\n",
567 /* Find the proper stratum to install this target in. */
569 for (prev = NULL, cur = target_stack; cur; prev = cur, cur = cur->next)
571 if ((int)(t->to_stratum) >= (int)(cur->target_ops->to_stratum))
575 /* If there's already targets at this stratum, remove them. */
578 while (t->to_stratum == cur->target_ops->to_stratum)
580 /* There's already something on this stratum. Close it off. */
581 if (cur->target_ops->to_close)
582 (cur->target_ops->to_close) (0);
584 prev->next = cur->next; /* Unchain old target_ops */
586 target_stack = cur->next; /* Unchain first on list */
592 /* We have removed all targets in our stratum, now add the new one. */
594 tmp = (struct target_stack_item *)
595 xmalloc (sizeof (struct target_stack_item));
604 update_current_target ();
606 cleanup_target (¤t_target); /* Fill in the gaps */
609 setup_target_debug ();
614 /* Remove a target_ops vector from the stack, wherever it may be.
615 Return how many times it was removed (0 or 1). */
619 struct target_ops *t;
621 struct target_stack_item *cur, *prev;
624 t->to_close (0); /* Let it clean up */
626 /* Look for the specified target. Note that we assume that a target
627 can only occur once in the target stack. */
629 for (cur = target_stack, prev = NULL; cur; prev = cur, cur = cur->next)
630 if (cur->target_ops == t)
634 return 0; /* Didn't find target_ops, quit now */
636 /* Unchain the target */
639 target_stack = cur->next;
641 prev->next = cur->next;
643 free (cur); /* Release the target_stack_item */
645 update_current_target ();
646 cleanup_target (¤t_target);
654 (current_target.to_close)(0); /* Let it clean up */
655 if (unpush_target (target_stack->target_ops) == 1)
658 fprintf_unfiltered(gdb_stderr,
659 "pop_target couldn't find target %s\n",
660 current_target.to_shortname);
665 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
667 /* target_read_string -- read a null terminated string, up to LEN bytes,
668 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
669 Set *STRING to a pointer to malloc'd memory containing the data; the caller
670 is responsible for freeing it. Return the number of bytes successfully
674 target_read_string (memaddr, string, len, errnop)
680 int tlen, origlen, offset, i;
684 int buffer_allocated;
686 unsigned int nbytes_read = 0;
688 /* Small for testing. */
689 buffer_allocated = 4;
690 buffer = xmalloc (buffer_allocated);
697 tlen = MIN (len, 4 - (memaddr & 3));
698 offset = memaddr & 3;
700 errcode = target_xfer_memory (memaddr & ~3, buf, 4, 0, NULL);
703 /* The transfer request might have crossed the boundary to an
704 unallocated region of memory. Retry the transfer, requesting
708 errcode = target_xfer_memory (memaddr, buf, 1, 0, NULL);
713 if (bufptr - buffer + tlen > buffer_allocated)
716 bytes = bufptr - buffer;
717 buffer_allocated *= 2;
718 buffer = xrealloc (buffer, buffer_allocated);
719 bufptr = buffer + bytes;
722 for (i = 0; i < tlen; i++)
724 *bufptr++ = buf[i + offset];
725 if (buf[i + offset] == '\000')
727 nbytes_read += i + 1;
744 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
745 GDB's memory at MYADDR. Returns either 0 for success or an errno value
748 If an error occurs, no guarantee is made about the contents of the data at
749 MYADDR. In particular, the caller should not depend upon partial reads
750 filling the buffer with good data. There is no way for the caller to know
751 how much good data might have been transfered anyway. Callers that can
752 deal with partial reads should call target_read_memory_partial. */
755 target_read_memory (memaddr, myaddr, len)
760 return target_xfer_memory (memaddr, myaddr, len, 0, NULL);
764 target_read_memory_section (memaddr, myaddr, len, bfd_section)
768 asection *bfd_section;
770 return target_xfer_memory (memaddr, myaddr, len, 0, bfd_section);
773 /* Read LEN bytes of target memory at address MEMADDR, placing the results
774 in GDB's memory at MYADDR. Returns a count of the bytes actually read,
775 and optionally an errno value in the location pointed to by ERRNOPTR
776 if ERRNOPTR is non-null. */
779 target_read_memory_partial (memaddr, myaddr, len, errnoptr)
785 int nread; /* Number of bytes actually read. */
786 int errcode; /* Error from last read. */
788 /* First try a complete read. */
789 errcode = target_xfer_memory (memaddr, myaddr, len, 0, NULL);
797 /* Loop, reading one byte at a time until we get as much as we can. */
798 for (errcode = 0, nread = 0; len > 0 && errcode == 0; nread++, len--)
800 errcode = target_xfer_memory (memaddr++, myaddr++, 1, 0, NULL);
802 /* If an error, the last read was unsuccessful, so adjust count. */
808 if (errnoptr != NULL)
816 target_write_memory (memaddr, myaddr, len)
821 return target_xfer_memory (memaddr, myaddr, len, 1, NULL);
824 /* This variable is used to pass section information down to targets. This
825 *should* be done by adding an argument to the target_xfer_memory function
826 of all the targets, but I didn't feel like changing 50+ files. */
828 asection *target_memory_bfd_section = NULL;
830 /* Move memory to or from the targets. Iterate until all of it has
831 been moved, if necessary. The top target gets priority; anything
832 it doesn't want, is offered to the next one down, etc. Note the
833 business with curlen: if an early target says "no, but I have a
834 boundary overlapping this xfer" then we shorten what we offer to
835 the subsequent targets so the early guy will get a chance at the
836 tail before the subsequent ones do.
838 Result is 0 or errno value. */
841 target_xfer_memory (memaddr, myaddr, len, write, bfd_section)
846 asection *bfd_section;
850 struct target_ops *t;
851 struct target_stack_item *item;
853 /* Zero length requests are ok and require no work. */
857 target_memory_bfd_section = bfd_section;
859 /* to_xfer_memory is not guaranteed to set errno, even when it returns
863 /* The quick case is that the top target does it all. */
864 res = current_target.to_xfer_memory
865 (memaddr, myaddr, len, write, ¤t_target);
871 /* If res <= 0 then we call it again in the loop. Ah well. */
875 curlen = len; /* Want to do it all */
876 for (item = target_stack; item; item = item->next)
878 t = item->target_ops;
879 if (!t->to_has_memory)
882 res = t->to_xfer_memory (memaddr, myaddr, curlen, write, t);
884 break; /* Handled all or part of xfer */
885 if (t->to_has_all_memory)
891 /* If this address is for nonexistent memory,
892 read zeros if reading, or do nothing if writing. Return error. */
894 memset (myaddr, 0, len);
905 return 0; /* We managed to cover it all somehow. */
911 target_info (args, from_tty)
915 struct target_ops *t;
916 struct target_stack_item *item;
919 if (symfile_objfile != NULL)
920 printf_unfiltered ("Symbols from \"%s\".\n", symfile_objfile->name);
922 #ifdef FILES_INFO_HOOK
923 if (FILES_INFO_HOOK ())
927 for (item = target_stack; item; item = item->next)
929 t = item->target_ops;
931 if (!t->to_has_memory)
934 if ((int)(t->to_stratum) <= (int)dummy_stratum)
937 printf_unfiltered("\tWhile running this, GDB does not access memory from...\n");
938 printf_unfiltered("%s:\n", t->to_longname);
939 (t->to_files_info)(t);
940 has_all_mem = t->to_has_all_memory;
944 /* This is to be called by the open routine before it does
948 target_preopen (from_tty)
953 if (target_has_execution)
955 if (query ("A program is being debugged already. Kill it? "))
958 error ("Program not killed.");
961 /* Calling target_kill may remove the target from the stack. But if
962 it doesn't (which seems like a win for UDI), remove it now. */
964 if (target_has_execution)
968 /* Detach a target after doing deferred register stores. */
971 target_detach (args, from_tty)
975 /* Handle any optimized stores to the inferior. */
976 #ifdef DO_DEFERRED_STORES
979 (current_target.to_detach) (args, from_tty);
983 target_link (modname, t_reloc)
987 if (STREQ(current_target.to_shortname, "rombug"))
989 (current_target.to_lookup_symbol) (modname, t_reloc);
991 error("Unable to link to %s and get relocation in rombug", modname);
994 *t_reloc = (CORE_ADDR)-1;
997 /* Look through the list of possible targets for a target that can
998 execute a run or attach command without any other data. This is
999 used to locate the default process stratum.
1001 Result is always valid (error() is called for errors). */
1003 static struct target_ops *
1004 find_default_run_target (do_mesg)
1007 struct target_ops **t;
1008 struct target_ops *runable = NULL;
1013 for (t = target_structs; t < target_structs + target_struct_size;
1016 if ((*t)->to_can_run && target_can_run(*t))
1024 error ("Don't know how to %s. Try \"help target\".", do_mesg);
1030 find_default_attach (args, from_tty)
1034 struct target_ops *t;
1036 t = find_default_run_target("attach");
1037 (t->to_attach) (args, from_tty);
1042 find_default_require_attach (args, from_tty)
1046 struct target_ops *t;
1048 t = find_default_run_target("require_attach");
1049 (t->to_require_attach) (args, from_tty);
1054 find_default_require_detach (pid, args, from_tty)
1059 struct target_ops *t;
1061 t = find_default_run_target("require_detach");
1062 (t->to_require_detach) (pid, args, from_tty);
1067 find_default_create_inferior (exec_file, allargs, env)
1072 struct target_ops *t;
1074 t = find_default_run_target("run");
1075 (t->to_create_inferior) (exec_file, allargs, env);
1080 find_default_clone_and_follow_inferior (child_pid, followed_child)
1082 int *followed_child;
1084 struct target_ops *t;
1086 t = find_default_run_target("run");
1087 (t->to_clone_and_follow_inferior) (child_pid, followed_child);
1103 /* Find a single runnable target in the stack and return it. If for
1104 some reason there is more than one, return NULL. */
1109 struct target_ops **t;
1110 struct target_ops *runable = NULL;
1115 for (t = target_structs; t < target_structs + target_struct_size; ++t)
1117 if ((*t)->to_can_run && target_can_run(*t))
1124 return (count == 1 ? runable : NULL);
1130 struct target_ops **t;
1131 struct target_ops *runable = NULL;
1136 for (t = target_structs; t < target_structs + target_struct_size;
1139 if ((*t)->to_stratum == core_stratum)
1146 return(count == 1 ? runable : NULL);
1149 /* The inferior process has died. Long live the inferior! */
1152 generic_mourn_inferior ()
1154 extern int show_breakpoint_hit_counts;
1158 breakpoint_init_inferior (inf_exited);
1159 registers_changed ();
1161 #ifdef CLEAR_DEFERRED_STORES
1162 /* Delete any pending stores to the inferior... */
1163 CLEAR_DEFERRED_STORES;
1166 reopen_exec_file ();
1167 reinit_frame_cache ();
1169 /* It is confusing to the user for ignore counts to stick around
1170 from previous runs of the inferior. So clear them. */
1171 /* However, it is more confusing for the ignore counts to disappear when
1172 using hit counts. So don't clear them if we're counting hits. */
1173 if (!show_breakpoint_hit_counts)
1174 breakpoint_clear_ignore_counts ();
1177 /* This table must match in order and size the signals in enum target_signal
1185 {"SIGHUP", "Hangup"},
1186 {"SIGINT", "Interrupt"},
1187 {"SIGQUIT", "Quit"},
1188 {"SIGILL", "Illegal instruction"},
1189 {"SIGTRAP", "Trace/breakpoint trap"},
1190 {"SIGABRT", "Aborted"},
1191 {"SIGEMT", "Emulation trap"},
1192 {"SIGFPE", "Arithmetic exception"},
1193 {"SIGKILL", "Killed"},
1194 {"SIGBUS", "Bus error"},
1195 {"SIGSEGV", "Segmentation fault"},
1196 {"SIGSYS", "Bad system call"},
1197 {"SIGPIPE", "Broken pipe"},
1198 {"SIGALRM", "Alarm clock"},
1199 {"SIGTERM", "Terminated"},
1200 {"SIGURG", "Urgent I/O condition"},
1201 {"SIGSTOP", "Stopped (signal)"},
1202 {"SIGTSTP", "Stopped (user)"},
1203 {"SIGCONT", "Continued"},
1204 {"SIGCHLD", "Child status changed"},
1205 {"SIGTTIN", "Stopped (tty input)"},
1206 {"SIGTTOU", "Stopped (tty output)"},
1207 {"SIGIO", "I/O possible"},
1208 {"SIGXCPU", "CPU time limit exceeded"},
1209 {"SIGXFSZ", "File size limit exceeded"},
1210 {"SIGVTALRM", "Virtual timer expired"},
1211 {"SIGPROF", "Profiling timer expired"},
1212 {"SIGWINCH", "Window size changed"},
1213 {"SIGLOST", "Resource lost"},
1214 {"SIGUSR1", "User defined signal 1"},
1215 {"SIGUSR2", "User defined signal 2"},
1216 {"SIGPWR", "Power fail/restart"},
1217 {"SIGPOLL", "Pollable event occurred"},
1218 {"SIGWIND", "SIGWIND"},
1219 {"SIGPHONE", "SIGPHONE"},
1220 {"SIGWAITING", "Process's LWPs are blocked"},
1221 {"SIGLWP", "Signal LWP"},
1222 {"SIGDANGER", "Swap space dangerously low"},
1223 {"SIGGRANT", "Monitor mode granted"},
1224 {"SIGRETRACT", "Need to relinquish monitor mode"},
1225 {"SIGMSG", "Monitor mode data available"},
1226 {"SIGSOUND", "Sound completed"},
1227 {"SIGSAK", "Secure attention"},
1228 {"SIGPRIO", "SIGPRIO"},
1229 {"SIG33", "Real-time event 33"},
1230 {"SIG34", "Real-time event 34"},
1231 {"SIG35", "Real-time event 35"},
1232 {"SIG36", "Real-time event 36"},
1233 {"SIG37", "Real-time event 37"},
1234 {"SIG38", "Real-time event 38"},
1235 {"SIG39", "Real-time event 39"},
1236 {"SIG40", "Real-time event 40"},
1237 {"SIG41", "Real-time event 41"},
1238 {"SIG42", "Real-time event 42"},
1239 {"SIG43", "Real-time event 43"},
1240 {"SIG44", "Real-time event 44"},
1241 {"SIG45", "Real-time event 45"},
1242 {"SIG46", "Real-time event 46"},
1243 {"SIG47", "Real-time event 47"},
1244 {"SIG48", "Real-time event 48"},
1245 {"SIG49", "Real-time event 49"},
1246 {"SIG50", "Real-time event 50"},
1247 {"SIG51", "Real-time event 51"},
1248 {"SIG52", "Real-time event 52"},
1249 {"SIG53", "Real-time event 53"},
1250 {"SIG54", "Real-time event 54"},
1251 {"SIG55", "Real-time event 55"},
1252 {"SIG56", "Real-time event 56"},
1253 {"SIG57", "Real-time event 57"},
1254 {"SIG58", "Real-time event 58"},
1255 {"SIG59", "Real-time event 59"},
1256 {"SIG60", "Real-time event 60"},
1257 {"SIG61", "Real-time event 61"},
1258 {"SIG62", "Real-time event 62"},
1259 {"SIG63", "Real-time event 63"},
1261 #if defined(MACH) || defined(__MACH__)
1262 /* Mach exceptions */
1263 {"EXC_BAD_ACCESS", "Could not access memory"},
1264 {"EXC_BAD_INSTRUCTION", "Illegal instruction/operand"},
1265 {"EXC_ARITHMETIC", "Arithmetic exception"},
1266 {"EXC_EMULATION", "Emulation instruction"},
1267 {"EXC_SOFTWARE", "Software generated exception"},
1268 {"EXC_BREAKPOINT", "Breakpoint"},
1270 {"SIGINFO", "Information request"},
1272 {NULL, "Unknown signal"},
1273 {NULL, "Internal error: printing TARGET_SIGNAL_DEFAULT"},
1275 /* Last entry, used to check whether the table is the right size. */
1276 {NULL, "TARGET_SIGNAL_MAGIC"}
1279 /* Return the string for a signal. */
1281 target_signal_to_string (sig)
1282 enum target_signal sig;
1284 if ((sig >= TARGET_SIGNAL_FIRST) && (sig <= TARGET_SIGNAL_LAST))
1285 return signals[sig].string;
1287 return signals[TARGET_SIGNAL_UNKNOWN].string;
1290 /* Return the name for a signal. */
1292 target_signal_to_name (sig)
1293 enum target_signal sig;
1295 if (sig == TARGET_SIGNAL_UNKNOWN)
1296 /* I think the code which prints this will always print it along with
1297 the string, so no need to be verbose. */
1299 return signals[sig].name;
1302 /* Given a name, return its signal. */
1304 target_signal_from_name (name)
1307 enum target_signal sig;
1309 /* It's possible we also should allow "SIGCLD" as well as "SIGCHLD"
1310 for TARGET_SIGNAL_SIGCHLD. SIGIOT, on the other hand, is more
1311 questionable; seems like by now people should call it SIGABRT
1314 /* This ugly cast brought to you by the native VAX compiler. */
1315 for (sig = TARGET_SIGNAL_HUP;
1316 signals[sig].name != NULL;
1317 sig = (enum target_signal)((int)sig + 1))
1318 if (STREQ (name, signals[sig].name))
1320 return TARGET_SIGNAL_UNKNOWN;
1323 /* The following functions are to help certain targets deal
1324 with the signal/waitstatus stuff. They could just as well be in
1325 a file called native-utils.c or unixwaitstatus-utils.c or whatever. */
1327 /* Convert host signal to our signals. */
1329 target_signal_from_host (hostsig)
1332 /* A switch statement would make sense but would require special kludges
1333 to deal with the cases where more than one signal has the same number. */
1335 if (hostsig == 0) return TARGET_SIGNAL_0;
1337 #if defined (SIGHUP)
1338 if (hostsig == SIGHUP) return TARGET_SIGNAL_HUP;
1340 #if defined (SIGINT)
1341 if (hostsig == SIGINT) return TARGET_SIGNAL_INT;
1343 #if defined (SIGQUIT)
1344 if (hostsig == SIGQUIT) return TARGET_SIGNAL_QUIT;
1346 #if defined (SIGILL)
1347 if (hostsig == SIGILL) return TARGET_SIGNAL_ILL;
1349 #if defined (SIGTRAP)
1350 if (hostsig == SIGTRAP) return TARGET_SIGNAL_TRAP;
1352 #if defined (SIGABRT)
1353 if (hostsig == SIGABRT) return TARGET_SIGNAL_ABRT;
1355 #if defined (SIGEMT)
1356 if (hostsig == SIGEMT) return TARGET_SIGNAL_EMT;
1358 #if defined (SIGFPE)
1359 if (hostsig == SIGFPE) return TARGET_SIGNAL_FPE;
1361 #if defined (SIGKILL)
1362 if (hostsig == SIGKILL) return TARGET_SIGNAL_KILL;
1364 #if defined (SIGBUS)
1365 if (hostsig == SIGBUS) return TARGET_SIGNAL_BUS;
1367 #if defined (SIGSEGV)
1368 if (hostsig == SIGSEGV) return TARGET_SIGNAL_SEGV;
1370 #if defined (SIGSYS)
1371 if (hostsig == SIGSYS) return TARGET_SIGNAL_SYS;
1373 #if defined (SIGPIPE)
1374 if (hostsig == SIGPIPE) return TARGET_SIGNAL_PIPE;
1376 #if defined (SIGALRM)
1377 if (hostsig == SIGALRM) return TARGET_SIGNAL_ALRM;
1379 #if defined (SIGTERM)
1380 if (hostsig == SIGTERM) return TARGET_SIGNAL_TERM;
1382 #if defined (SIGUSR1)
1383 if (hostsig == SIGUSR1) return TARGET_SIGNAL_USR1;
1385 #if defined (SIGUSR2)
1386 if (hostsig == SIGUSR2) return TARGET_SIGNAL_USR2;
1388 #if defined (SIGCLD)
1389 if (hostsig == SIGCLD) return TARGET_SIGNAL_CHLD;
1391 #if defined (SIGCHLD)
1392 if (hostsig == SIGCHLD) return TARGET_SIGNAL_CHLD;
1394 #if defined (SIGPWR)
1395 if (hostsig == SIGPWR) return TARGET_SIGNAL_PWR;
1397 #if defined (SIGWINCH)
1398 if (hostsig == SIGWINCH) return TARGET_SIGNAL_WINCH;
1400 #if defined (SIGURG)
1401 if (hostsig == SIGURG) return TARGET_SIGNAL_URG;
1404 if (hostsig == SIGIO) return TARGET_SIGNAL_IO;
1406 #if defined (SIGPOLL)
1407 if (hostsig == SIGPOLL) return TARGET_SIGNAL_POLL;
1409 #if defined (SIGSTOP)
1410 if (hostsig == SIGSTOP) return TARGET_SIGNAL_STOP;
1412 #if defined (SIGTSTP)
1413 if (hostsig == SIGTSTP) return TARGET_SIGNAL_TSTP;
1415 #if defined (SIGCONT)
1416 if (hostsig == SIGCONT) return TARGET_SIGNAL_CONT;
1418 #if defined (SIGTTIN)
1419 if (hostsig == SIGTTIN) return TARGET_SIGNAL_TTIN;
1421 #if defined (SIGTTOU)
1422 if (hostsig == SIGTTOU) return TARGET_SIGNAL_TTOU;
1424 #if defined (SIGVTALRM)
1425 if (hostsig == SIGVTALRM) return TARGET_SIGNAL_VTALRM;
1427 #if defined (SIGPROF)
1428 if (hostsig == SIGPROF) return TARGET_SIGNAL_PROF;
1430 #if defined (SIGXCPU)
1431 if (hostsig == SIGXCPU) return TARGET_SIGNAL_XCPU;
1433 #if defined (SIGXFSZ)
1434 if (hostsig == SIGXFSZ) return TARGET_SIGNAL_XFSZ;
1436 #if defined (SIGWIND)
1437 if (hostsig == SIGWIND) return TARGET_SIGNAL_WIND;
1439 #if defined (SIGPHONE)
1440 if (hostsig == SIGPHONE) return TARGET_SIGNAL_PHONE;
1442 #if defined (SIGLOST)
1443 if (hostsig == SIGLOST) return TARGET_SIGNAL_LOST;
1445 #if defined (SIGWAITING)
1446 if (hostsig == SIGWAITING) return TARGET_SIGNAL_WAITING;
1448 #if defined (SIGLWP)
1449 if (hostsig == SIGLWP) return TARGET_SIGNAL_LWP;
1451 #if defined (SIGDANGER)
1452 if (hostsig == SIGDANGER) return TARGET_SIGNAL_DANGER;
1454 #if defined (SIGGRANT)
1455 if (hostsig == SIGGRANT) return TARGET_SIGNAL_GRANT;
1457 #if defined (SIGRETRACT)
1458 if (hostsig == SIGRETRACT) return TARGET_SIGNAL_RETRACT;
1460 #if defined (SIGMSG)
1461 if (hostsig == SIGMSG) return TARGET_SIGNAL_MSG;
1463 #if defined (SIGSOUND)
1464 if (hostsig == SIGSOUND) return TARGET_SIGNAL_SOUND;
1466 #if defined (SIGSAK)
1467 if (hostsig == SIGSAK) return TARGET_SIGNAL_SAK;
1469 #if defined (SIGPRIO)
1470 if (hostsig == SIGPRIO) return TARGET_SIGNAL_PRIO;
1473 /* Mach exceptions. Assumes that the values for EXC_ are positive! */
1474 #if defined (EXC_BAD_ACCESS) && defined (_NSIG)
1475 if (hostsig == _NSIG + EXC_BAD_ACCESS) return TARGET_EXC_BAD_ACCESS;
1477 #if defined (EXC_BAD_INSTRUCTION) && defined (_NSIG)
1478 if (hostsig == _NSIG + EXC_BAD_INSTRUCTION) return TARGET_EXC_BAD_INSTRUCTION;
1480 #if defined (EXC_ARITHMETIC) && defined (_NSIG)
1481 if (hostsig == _NSIG + EXC_ARITHMETIC) return TARGET_EXC_ARITHMETIC;
1483 #if defined (EXC_EMULATION) && defined (_NSIG)
1484 if (hostsig == _NSIG + EXC_EMULATION) return TARGET_EXC_EMULATION;
1486 #if defined (EXC_SOFTWARE) && defined (_NSIG)
1487 if (hostsig == _NSIG + EXC_SOFTWARE) return TARGET_EXC_SOFTWARE;
1489 #if defined (EXC_BREAKPOINT) && defined (_NSIG)
1490 if (hostsig == _NSIG + EXC_BREAKPOINT) return TARGET_EXC_BREAKPOINT;
1493 #if defined (SIGINFO)
1494 if (hostsig == SIGINFO) return TARGET_SIGNAL_INFO;
1497 #if defined (REALTIME_LO)
1498 if (hostsig >= REALTIME_LO && hostsig < REALTIME_HI)
1499 return (enum target_signal)
1500 (hostsig - 33 + (int) TARGET_SIGNAL_REALTIME_33);
1502 return TARGET_SIGNAL_UNKNOWN;
1506 target_signal_to_host (oursig)
1507 enum target_signal oursig;
1511 case TARGET_SIGNAL_0: return 0;
1513 #if defined (SIGHUP)
1514 case TARGET_SIGNAL_HUP: return SIGHUP;
1516 #if defined (SIGINT)
1517 case TARGET_SIGNAL_INT: return SIGINT;
1519 #if defined (SIGQUIT)
1520 case TARGET_SIGNAL_QUIT: return SIGQUIT;
1522 #if defined (SIGILL)
1523 case TARGET_SIGNAL_ILL: return SIGILL;
1525 #if defined (SIGTRAP)
1526 case TARGET_SIGNAL_TRAP: return SIGTRAP;
1528 #if defined (SIGABRT)
1529 case TARGET_SIGNAL_ABRT: return SIGABRT;
1531 #if defined (SIGEMT)
1532 case TARGET_SIGNAL_EMT: return SIGEMT;
1534 #if defined (SIGFPE)
1535 case TARGET_SIGNAL_FPE: return SIGFPE;
1537 #if defined (SIGKILL)
1538 case TARGET_SIGNAL_KILL: return SIGKILL;
1540 #if defined (SIGBUS)
1541 case TARGET_SIGNAL_BUS: return SIGBUS;
1543 #if defined (SIGSEGV)
1544 case TARGET_SIGNAL_SEGV: return SIGSEGV;
1546 #if defined (SIGSYS)
1547 case TARGET_SIGNAL_SYS: return SIGSYS;
1549 #if defined (SIGPIPE)
1550 case TARGET_SIGNAL_PIPE: return SIGPIPE;
1552 #if defined (SIGALRM)
1553 case TARGET_SIGNAL_ALRM: return SIGALRM;
1555 #if defined (SIGTERM)
1556 case TARGET_SIGNAL_TERM: return SIGTERM;
1558 #if defined (SIGUSR1)
1559 case TARGET_SIGNAL_USR1: return SIGUSR1;
1561 #if defined (SIGUSR2)
1562 case TARGET_SIGNAL_USR2: return SIGUSR2;
1564 #if defined (SIGCHLD) || defined (SIGCLD)
1565 case TARGET_SIGNAL_CHLD:
1566 #if defined (SIGCHLD)
1571 #endif /* SIGCLD or SIGCHLD */
1572 #if defined (SIGPWR)
1573 case TARGET_SIGNAL_PWR: return SIGPWR;
1575 #if defined (SIGWINCH)
1576 case TARGET_SIGNAL_WINCH: return SIGWINCH;
1578 #if defined (SIGURG)
1579 case TARGET_SIGNAL_URG: return SIGURG;
1582 case TARGET_SIGNAL_IO: return SIGIO;
1584 #if defined (SIGPOLL)
1585 case TARGET_SIGNAL_POLL: return SIGPOLL;
1587 #if defined (SIGSTOP)
1588 case TARGET_SIGNAL_STOP: return SIGSTOP;
1590 #if defined (SIGTSTP)
1591 case TARGET_SIGNAL_TSTP: return SIGTSTP;
1593 #if defined (SIGCONT)
1594 case TARGET_SIGNAL_CONT: return SIGCONT;
1596 #if defined (SIGTTIN)
1597 case TARGET_SIGNAL_TTIN: return SIGTTIN;
1599 #if defined (SIGTTOU)
1600 case TARGET_SIGNAL_TTOU: return SIGTTOU;
1602 #if defined (SIGVTALRM)
1603 case TARGET_SIGNAL_VTALRM: return SIGVTALRM;
1605 #if defined (SIGPROF)
1606 case TARGET_SIGNAL_PROF: return SIGPROF;
1608 #if defined (SIGXCPU)
1609 case TARGET_SIGNAL_XCPU: return SIGXCPU;
1611 #if defined (SIGXFSZ)
1612 case TARGET_SIGNAL_XFSZ: return SIGXFSZ;
1614 #if defined (SIGWIND)
1615 case TARGET_SIGNAL_WIND: return SIGWIND;
1617 #if defined (SIGPHONE)
1618 case TARGET_SIGNAL_PHONE: return SIGPHONE;
1620 #if defined (SIGLOST)
1621 case TARGET_SIGNAL_LOST: return SIGLOST;
1623 #if defined (SIGWAITING)
1624 case TARGET_SIGNAL_WAITING: return SIGWAITING;
1626 #if defined (SIGLWP)
1627 case TARGET_SIGNAL_LWP: return SIGLWP;
1629 #if defined (SIGDANGER)
1630 case TARGET_SIGNAL_DANGER: return SIGDANGER;
1632 #if defined (SIGGRANT)
1633 case TARGET_SIGNAL_GRANT: return SIGGRANT;
1635 #if defined (SIGRETRACT)
1636 case TARGET_SIGNAL_RETRACT: return SIGRETRACT;
1638 #if defined (SIGMSG)
1639 case TARGET_SIGNAL_MSG: return SIGMSG;
1641 #if defined (SIGSOUND)
1642 case TARGET_SIGNAL_SOUND: return SIGSOUND;
1644 #if defined (SIGSAK)
1645 case TARGET_SIGNAL_SAK: return SIGSAK;
1647 #if defined (SIGPRIO)
1648 case TARGET_SIGNAL_PRIO: return SIGPRIO;
1651 /* Mach exceptions. Assumes that the values for EXC_ are positive! */
1652 #if defined (EXC_BAD_ACCESS) && defined (_NSIG)
1653 case TARGET_EXC_BAD_ACCESS: return _NSIG + EXC_BAD_ACCESS;
1655 #if defined (EXC_BAD_INSTRUCTION) && defined (_NSIG)
1656 case TARGET_EXC_BAD_INSTRUCTION: return _NSIG + EXC_BAD_INSTRUCTION;
1658 #if defined (EXC_ARITHMETIC) && defined (_NSIG)
1659 case TARGET_EXC_ARITHMETIC: return _NSIG + EXC_ARITHMETIC;
1661 #if defined (EXC_EMULATION) && defined (_NSIG)
1662 case TARGET_EXC_EMULATION: return _NSIG + EXC_EMULATION;
1664 #if defined (EXC_SOFTWARE) && defined (_NSIG)
1665 case TARGET_EXC_SOFTWARE: return _NSIG + EXC_SOFTWARE;
1667 #if defined (EXC_BREAKPOINT) && defined (_NSIG)
1668 case TARGET_EXC_BREAKPOINT: return _NSIG + EXC_BREAKPOINT;
1671 #if defined (SIGINFO)
1672 case TARGET_SIGNAL_INFO: return SIGINFO;
1676 #if defined (REALTIME_LO)
1677 if (oursig >= TARGET_SIGNAL_REALTIME_33
1678 && oursig <= TARGET_SIGNAL_REALTIME_63)
1681 (int)oursig - (int)TARGET_SIGNAL_REALTIME_33 + REALTIME_LO;
1682 if (retsig < REALTIME_HI)
1686 /* The user might be trying to do "signal SIGSAK" where this system
1687 doesn't have SIGSAK. */
1688 warning ("Signal %s does not exist on this system.\n",
1689 target_signal_to_name (oursig));
1694 /* Helper function for child_wait and the Lynx derivatives of child_wait.
1695 HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
1696 translation of that in OURSTATUS. */
1698 store_waitstatus (ourstatus, hoststatus)
1699 struct target_waitstatus *ourstatus;
1702 #ifdef CHILD_SPECIAL_WAITSTATUS
1703 /* CHILD_SPECIAL_WAITSTATUS should return nonzero and set *OURSTATUS
1704 if it wants to deal with hoststatus. */
1705 if (CHILD_SPECIAL_WAITSTATUS (ourstatus, hoststatus))
1709 if (WIFEXITED (hoststatus))
1711 ourstatus->kind = TARGET_WAITKIND_EXITED;
1712 ourstatus->value.integer = WEXITSTATUS (hoststatus);
1714 else if (!WIFSTOPPED (hoststatus))
1716 ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
1717 ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus));
1721 ourstatus->kind = TARGET_WAITKIND_STOPPED;
1722 ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus));
1726 /* In some circumstances we allow a command to specify a numeric
1727 signal. The idea is to keep these circumstances limited so that
1728 users (and scripts) develop portable habits. For comparison,
1729 POSIX.2 `kill' requires that 1,2,3,6,9,14, and 15 work (and using a
1730 numeric signal at all is obscelescent. We are slightly more
1731 lenient and allow 1-15 which should match host signal numbers on
1732 most systems. Use of symbolic signal names is strongly encouraged. */
1735 target_signal_from_command (num)
1738 if (num >= 1 && num <= 15)
1739 return (enum target_signal)num;
1740 error ("Only signals 1-15 are valid as numeric signals.\n\
1741 Use \"info signals\" for a list of symbolic signals.");
1744 /* Returns zero to leave the inferior alone, one to interrupt it. */
1745 int (*target_activity_function) PARAMS ((void));
1746 int target_activity_fd;
1748 /* Convert a normal process ID to a string. Returns the string in a static
1752 normal_pid_to_str (pid)
1755 static char buf[30];
1757 if (STREQ (current_target.to_shortname, "remote"))
1758 sprintf (buf, "thread %d\0", pid);
1760 sprintf (buf, "process %d\0", pid);
1765 /* Some targets (such as ttrace-based HPUX) don't allow us to request
1766 notification of inferior events such as fork and vork immediately
1767 after the inferior is created. (This because of how gdb gets an
1768 inferior created via invoking a shell to do it. In such a scenario,
1769 if the shell init file has commands in it, the shell will fork and
1770 exec for each of those commands, and we will see each such fork
1773 This function is used by all targets that allow us to request
1774 notification of forks, etc at inferior creation time; e.g., in
1775 target_acknowledge_forked_child.
1778 normal_target_post_startup_inferior (pid)
1781 /* This space intentionally left blank. */
1784 /* Set up the handful of non-empty slots needed by the dummy target
1788 init_dummy_target ()
1790 dummy_target.to_shortname = "None";
1791 dummy_target.to_longname = "None";
1792 dummy_target.to_doc = "";
1793 dummy_target.to_attach = find_default_attach;
1794 dummy_target.to_require_attach = find_default_require_attach;
1795 dummy_target.to_require_detach = find_default_require_detach;
1796 dummy_target.to_create_inferior = find_default_create_inferior;
1797 dummy_target.to_clone_and_follow_inferior = find_default_clone_and_follow_inferior;
1798 dummy_target.to_stratum = dummy_stratum;
1799 dummy_target.to_magic = OPS_MAGIC;
1803 static struct target_ops debug_target;
1806 debug_to_open (args, from_tty)
1810 debug_target.to_open (args, from_tty);
1812 fprintf_unfiltered (gdb_stderr, "target_open (%s, %d)\n", args, from_tty);
1816 debug_to_close (quitting)
1819 debug_target.to_close (quitting);
1821 fprintf_unfiltered (gdb_stderr, "target_close (%d)\n", quitting);
1825 debug_to_attach (args, from_tty)
1829 debug_target.to_attach (args, from_tty);
1831 fprintf_unfiltered (gdb_stderr, "target_attach (%s, %d)\n", args, from_tty);
1836 debug_to_post_attach (pid)
1839 debug_target.to_post_attach (pid);
1841 fprintf_unfiltered (gdb_stderr, "target_post_attach (%d)\n", pid);
1845 debug_to_require_attach (args, from_tty)
1849 debug_target.to_require_attach (args, from_tty);
1851 fprintf_unfiltered (gdb_stderr,
1852 "target_require_attach (%s, %d)\n", args, from_tty);
1856 debug_to_detach (args, from_tty)
1860 debug_target.to_detach (args, from_tty);
1862 fprintf_unfiltered (gdb_stderr, "target_detach (%s, %d)\n", args, from_tty);
1866 debug_to_require_detach (pid, args, from_tty)
1871 debug_target.to_require_detach (pid, args, from_tty);
1873 fprintf_unfiltered (gdb_stderr,
1874 "target_require_detach (%d, %s, %d)\n", pid, args, from_tty);
1878 debug_to_resume (pid, step, siggnal)
1881 enum target_signal siggnal;
1883 debug_target.to_resume (pid, step, siggnal);
1885 fprintf_unfiltered (gdb_stderr, "target_resume (%d, %s, %s)\n", pid,
1886 step ? "step" : "continue",
1887 target_signal_to_name (siggnal));
1891 debug_to_wait (pid, status)
1893 struct target_waitstatus *status;
1897 retval = debug_target.to_wait (pid, status);
1899 fprintf_unfiltered (gdb_stderr,
1900 "target_wait (%d, status) = %d, ", pid, retval);
1901 fprintf_unfiltered (gdb_stderr, "status->kind = ");
1902 switch (status->kind)
1904 case TARGET_WAITKIND_EXITED:
1905 fprintf_unfiltered (gdb_stderr, "exited, status = %d\n",
1906 status->value.integer);
1908 case TARGET_WAITKIND_STOPPED:
1909 fprintf_unfiltered (gdb_stderr, "stopped, signal = %s\n",
1910 target_signal_to_name (status->value.sig));
1912 case TARGET_WAITKIND_SIGNALLED:
1913 fprintf_unfiltered (gdb_stderr, "signalled, signal = %s\n",
1914 target_signal_to_name (status->value.sig));
1916 case TARGET_WAITKIND_LOADED:
1917 fprintf_unfiltered (gdb_stderr, "loaded\n");
1919 case TARGET_WAITKIND_FORKED:
1920 fprintf_unfiltered (gdb_stderr, "forked\n");
1922 case TARGET_WAITKIND_VFORKED:
1923 fprintf_unfiltered (gdb_stderr, "vforked\n");
1925 case TARGET_WAITKIND_EXECD:
1926 fprintf_unfiltered (gdb_stderr, "execd\n");
1928 case TARGET_WAITKIND_SPURIOUS:
1929 fprintf_unfiltered (gdb_stderr, "spurious\n");
1932 fprintf_unfiltered (gdb_stderr, "unknown???\n");
1940 debug_to_post_wait (pid, status)
1944 debug_target.to_post_wait (pid, status);
1946 fprintf_unfiltered (gdb_stderr, "target_post_wait (%d, %d)\n",
1951 debug_to_fetch_registers (regno)
1954 debug_target.to_fetch_registers (regno);
1956 fprintf_unfiltered (gdb_stderr, "target_fetch_registers (%s)",
1957 regno != -1 ? REGISTER_NAME (regno) : "-1");
1959 fprintf_unfiltered (gdb_stderr, " = 0x%x %d",
1960 (unsigned long) read_register (regno),
1961 read_register (regno));
1962 fprintf_unfiltered (gdb_stderr, "\n");
1966 debug_to_store_registers (regno)
1969 debug_target.to_store_registers (regno);
1971 if (regno >= 0 && regno < NUM_REGS)
1972 fprintf_unfiltered (gdb_stderr, "target_store_registers (%s) = 0x%x %d\n",
1973 REGISTER_NAME (regno),
1974 (unsigned long) read_register (regno),
1975 (unsigned long) read_register (regno));
1977 fprintf_unfiltered (gdb_stderr, "target_store_registers (%d)\n", regno);
1981 debug_to_prepare_to_store ()
1983 debug_target.to_prepare_to_store ();
1985 fprintf_unfiltered (gdb_stderr, "target_prepare_to_store ()\n");
1989 debug_to_xfer_memory (memaddr, myaddr, len, write, target)
1994 struct target_ops *target;
1998 retval = debug_target.to_xfer_memory (memaddr, myaddr, len, write, target);
2000 fprintf_unfiltered (gdb_stderr,
2001 "target_xfer_memory (0x%x, xxx, %d, %s, xxx) = %d",
2002 (unsigned int) memaddr, /* possable truncate long long */
2003 len, write ? "write" : "read", retval);
2011 fputs_unfiltered (", bytes =", gdb_stderr);
2012 for (i = 0; i < retval; i++)
2014 if ((((long) &(myaddr[i])) & 0xf) == 0)
2015 fprintf_unfiltered (gdb_stderr, "\n");
2016 fprintf_unfiltered (gdb_stderr, " %02x", myaddr[i] & 0xff);
2020 fputc_unfiltered ('\n', gdb_stderr);
2026 debug_to_files_info (target)
2027 struct target_ops *target;
2029 debug_target.to_files_info (target);
2031 fprintf_unfiltered (gdb_stderr, "target_files_info (xxx)\n");
2035 debug_to_insert_breakpoint (addr, save)
2041 retval = debug_target.to_insert_breakpoint (addr, save);
2043 fprintf_unfiltered (gdb_stderr,
2044 "target_insert_breakpoint (0x%x, xxx) = %d\n",
2045 (unsigned long) addr, retval);
2050 debug_to_remove_breakpoint (addr, save)
2056 retval = debug_target.to_remove_breakpoint (addr, save);
2058 fprintf_unfiltered (gdb_stderr,
2059 "target_remove_breakpoint (0x%x, xxx) = %d\n",
2060 (unsigned long)addr, retval);
2065 debug_to_terminal_init ()
2067 debug_target.to_terminal_init ();
2069 fprintf_unfiltered (gdb_stderr, "target_terminal_init ()\n");
2073 debug_to_terminal_inferior ()
2075 debug_target.to_terminal_inferior ();
2077 fprintf_unfiltered (gdb_stderr, "target_terminal_inferior ()\n");
2081 debug_to_terminal_ours_for_output ()
2083 debug_target.to_terminal_ours_for_output ();
2085 fprintf_unfiltered (gdb_stderr, "target_terminal_ours_for_output ()\n");
2089 debug_to_terminal_ours ()
2091 debug_target.to_terminal_ours ();
2093 fprintf_unfiltered (gdb_stderr, "target_terminal_ours ()\n");
2097 debug_to_terminal_info (arg, from_tty)
2101 debug_target.to_terminal_info (arg, from_tty);
2103 fprintf_unfiltered (gdb_stderr, "target_terminal_info (%s, %d)\n", arg,
2110 debug_target.to_kill ();
2112 fprintf_unfiltered (gdb_stderr, "target_kill ()\n");
2116 debug_to_load (args, from_tty)
2120 debug_target.to_load (args, from_tty);
2122 fprintf_unfiltered (gdb_stderr, "target_load (%s, %d)\n", args, from_tty);
2126 debug_to_lookup_symbol (name, addrp)
2132 retval = debug_target.to_lookup_symbol (name, addrp);
2134 fprintf_unfiltered (gdb_stderr, "target_lookup_symbol (%s, xxx)\n", name);
2140 debug_to_create_inferior (exec_file, args, env)
2145 debug_target.to_create_inferior (exec_file, args, env);
2147 fprintf_unfiltered (gdb_stderr, "target_create_inferior (%s, %s, xxx)\n",
2152 debug_to_post_startup_inferior (pid)
2155 debug_target.to_post_startup_inferior (pid);
2157 fprintf_unfiltered (gdb_stderr, "target_post_startup_inferior (%d)\n",
2162 debug_to_acknowledge_created_inferior (pid)
2165 debug_target.to_acknowledge_created_inferior (pid);
2167 fprintf_unfiltered (gdb_stderr, "target_acknowledge_created_inferior (%d)\n",
2172 debug_to_clone_and_follow_inferior (child_pid, followed_child)
2174 int *followed_child;
2176 debug_target.to_clone_and_follow_inferior (child_pid, followed_child);
2178 fprintf_unfiltered (gdb_stderr,
2179 "target_clone_and_follow_inferior (%d, %d)\n",
2180 child_pid, *followed_child);
2184 debug_to_post_follow_inferior_by_clone ()
2186 debug_target.to_post_follow_inferior_by_clone ();
2188 fprintf_unfiltered (gdb_stderr, "target_post_follow_inferior_by_clone ()\n");
2192 debug_to_insert_fork_catchpoint (pid)
2197 retval = debug_target.to_insert_fork_catchpoint (pid);
2199 fprintf_unfiltered (gdb_stderr, "target_insert_fork_catchpoint (%d) = %d\n",
2206 debug_to_remove_fork_catchpoint (pid)
2211 retval = debug_target.to_remove_fork_catchpoint (pid);
2213 fprintf_unfiltered (gdb_stderr, "target_remove_fork_catchpoint (%d) = %d\n",
2220 debug_to_insert_vfork_catchpoint (pid)
2225 retval = debug_target.to_insert_vfork_catchpoint (pid);
2227 fprintf_unfiltered (gdb_stderr, "target_insert_vfork_catchpoint (%d)= %d\n",
2234 debug_to_remove_vfork_catchpoint (pid)
2239 retval = debug_target.to_remove_vfork_catchpoint (pid);
2241 fprintf_unfiltered (gdb_stderr, "target_remove_vfork_catchpoint (%d) = %d\n",
2248 debug_to_has_forked (pid, child_pid)
2254 has_forked = debug_target.to_has_forked (pid, child_pid);
2256 fprintf_unfiltered (gdb_stderr, "target_has_forked (%d, %d) = %d\n",
2257 pid, *child_pid, has_forked);
2263 debug_to_has_vforked (pid, child_pid)
2269 has_vforked = debug_target.to_has_vforked (pid, child_pid);
2271 fprintf_unfiltered (gdb_stderr, "target_has_vforked (%d, %d) = %d\n",
2272 pid, *child_pid, has_vforked);
2278 debug_to_can_follow_vfork_prior_to_exec ()
2280 int can_immediately_follow_vfork;
2282 can_immediately_follow_vfork = debug_target.to_can_follow_vfork_prior_to_exec ();
2284 fprintf_unfiltered (gdb_stderr, "target_can_follow_vfork_prior_to_exec () = %d\n",
2285 can_immediately_follow_vfork);
2287 return can_immediately_follow_vfork;
2291 debug_to_post_follow_vfork (parent_pid, followed_parent, child_pid, followed_child)
2293 int followed_parent;
2297 debug_target.to_post_follow_vfork (parent_pid, followed_parent, child_pid, followed_child);
2299 fprintf_unfiltered (gdb_stderr,
2300 "target_post_follow_vfork (%d, %d, %d, %d)\n",
2301 parent_pid, followed_parent, child_pid, followed_child);
2305 debug_to_insert_exec_catchpoint (pid)
2310 retval = debug_target.to_insert_exec_catchpoint (pid);
2312 fprintf_unfiltered (gdb_stderr, "target_insert_exec_catchpoint (%d) = %d\n",
2319 debug_to_remove_exec_catchpoint (pid)
2324 retval = debug_target.to_remove_exec_catchpoint (pid);
2326 fprintf_unfiltered (gdb_stderr, "target_remove_exec_catchpoint (%d) = %d\n",
2333 debug_to_has_execd (pid, execd_pathname)
2335 char ** execd_pathname;
2339 has_execd = debug_target.to_has_execd (pid, execd_pathname);
2341 fprintf_unfiltered (gdb_stderr, "target_has_execd (%d, %s) = %d\n",
2342 pid, (*execd_pathname ? *execd_pathname : "<NULL>"),
2349 debug_to_reported_exec_events_per_exec_call ()
2351 int reported_exec_events;
2353 reported_exec_events = debug_target.to_reported_exec_events_per_exec_call ();
2355 fprintf_unfiltered (gdb_stderr,
2356 "target_reported_exec_events_per_exec_call () = %d\n",
2357 reported_exec_events);
2359 return reported_exec_events;
2363 debug_to_has_syscall_event (pid, kind, syscall_id)
2365 enum target_waitkind * kind;
2368 int has_syscall_event;
2369 char * kind_spelling = "??";
2371 has_syscall_event = debug_target.to_has_syscall_event (pid, kind, syscall_id);
2372 if (has_syscall_event)
2376 case TARGET_WAITKIND_SYSCALL_ENTRY:
2377 kind_spelling = "SYSCALL_ENTRY";
2379 case TARGET_WAITKIND_SYSCALL_RETURN:
2380 kind_spelling = "SYSCALL_RETURN";
2387 fprintf_unfiltered (gdb_stderr,
2388 "target_has_syscall_event (%d, %s, %d) = %d\n",
2389 pid, kind_spelling, *syscall_id, has_syscall_event);
2391 return has_syscall_event;
2395 debug_to_has_exited (pid, wait_status, exit_status)
2402 has_exited = debug_target.to_has_exited (pid, wait_status, exit_status);
2404 fprintf_unfiltered (gdb_stderr, "target_has_exited (%d, %d, %d) = %d\n",
2405 pid, wait_status, *exit_status, has_exited);
2411 debug_to_mourn_inferior ()
2413 debug_target.to_mourn_inferior ();
2415 fprintf_unfiltered (gdb_stderr, "target_mourn_inferior ()\n");
2423 retval = debug_target.to_can_run ();
2425 fprintf_unfiltered (gdb_stderr, "target_can_run () = %d\n", retval);
2431 debug_to_notice_signals (pid)
2434 debug_target.to_notice_signals (pid);
2436 fprintf_unfiltered (gdb_stderr, "target_notice_signals (%d)\n", pid);
2440 debug_to_thread_alive (pid)
2445 retval = debug_target.to_thread_alive (pid);
2447 fprintf_unfiltered (gdb_stderr, "target_thread_alive (%d) = %d\n",
2456 debug_target.to_stop ();
2458 fprintf_unfiltered (gdb_stderr, "target_stop ()\n");
2462 debug_to_query (type, req, resp, siz)
2470 retval = debug_target.to_query (type, req, resp, siz);
2472 fprintf_unfiltered (gdb_stderr, "target_query (%c, %s, %s, %d) = %d\n", type, req, resp, *siz, retval);
2477 static struct symtab_and_line *
2478 debug_to_enable_exception_callback (kind, enable)
2479 enum exception_event_kind kind;
2482 struct symtab_and_line *result;
2483 result = debug_target.to_enable_exception_callback (kind, enable);
2484 fprintf_unfiltered (gdb_stderr,
2485 "target get_exception_callback_sal (%d, %d)\n",
2490 static struct exception_event_record *
2491 debug_to_get_current_exception_event ()
2493 struct exception_event_record *result;
2494 result = debug_target.to_get_current_exception_event();
2495 fprintf_unfiltered (gdb_stderr, "target get_current_exception_event ()\n");
2500 debug_to_pid_to_exec_file (pid)
2505 exec_file = debug_target.to_pid_to_exec_file (pid);
2507 fprintf_unfiltered (gdb_stderr, "target_pid_to_exec_file (%d) = %s\n",
2514 debug_to_core_file_to_sym_file (core)
2519 sym_file = debug_target.to_core_file_to_sym_file (core);
2521 fprintf_unfiltered (gdb_stderr, "target_core_file_to_sym_file (%s) = %s\n",
2528 setup_target_debug ()
2530 memcpy (&debug_target, ¤t_target, sizeof debug_target);
2532 current_target.to_open = debug_to_open;
2533 current_target.to_close = debug_to_close;
2534 current_target.to_attach = debug_to_attach;
2535 current_target.to_post_attach = debug_to_post_attach;
2536 current_target.to_require_attach = debug_to_require_attach;
2537 current_target.to_detach = debug_to_detach;
2538 current_target.to_require_detach = debug_to_require_detach;
2539 current_target.to_resume = debug_to_resume;
2540 current_target.to_wait = debug_to_wait;
2541 current_target.to_post_wait = debug_to_post_wait;
2542 current_target.to_fetch_registers = debug_to_fetch_registers;
2543 current_target.to_store_registers = debug_to_store_registers;
2544 current_target.to_prepare_to_store = debug_to_prepare_to_store;
2545 current_target.to_xfer_memory = debug_to_xfer_memory;
2546 current_target.to_files_info = debug_to_files_info;
2547 current_target.to_insert_breakpoint = debug_to_insert_breakpoint;
2548 current_target.to_remove_breakpoint = debug_to_remove_breakpoint;
2549 current_target.to_terminal_init = debug_to_terminal_init;
2550 current_target.to_terminal_inferior = debug_to_terminal_inferior;
2551 current_target.to_terminal_ours_for_output = debug_to_terminal_ours_for_output;
2552 current_target.to_terminal_ours = debug_to_terminal_ours;
2553 current_target.to_terminal_info = debug_to_terminal_info;
2554 current_target.to_kill = debug_to_kill;
2555 current_target.to_load = debug_to_load;
2556 current_target.to_lookup_symbol = debug_to_lookup_symbol;
2557 current_target.to_create_inferior = debug_to_create_inferior;
2558 current_target.to_post_startup_inferior = debug_to_post_startup_inferior;
2559 current_target.to_acknowledge_created_inferior = debug_to_acknowledge_created_inferior;
2560 current_target.to_clone_and_follow_inferior = debug_to_clone_and_follow_inferior;
2561 current_target.to_post_follow_inferior_by_clone = debug_to_post_follow_inferior_by_clone;
2562 current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint;
2563 current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint;
2564 current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint;
2565 current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint;
2566 current_target.to_has_forked = debug_to_has_forked;
2567 current_target.to_has_vforked = debug_to_has_vforked;
2568 current_target.to_can_follow_vfork_prior_to_exec = debug_to_can_follow_vfork_prior_to_exec;
2569 current_target.to_post_follow_vfork = debug_to_post_follow_vfork;
2570 current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint;
2571 current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint;
2572 current_target.to_has_execd = debug_to_has_execd;
2573 current_target.to_reported_exec_events_per_exec_call = debug_to_reported_exec_events_per_exec_call;
2574 current_target.to_has_syscall_event = debug_to_has_syscall_event;
2575 current_target.to_has_exited = debug_to_has_exited;
2576 current_target.to_mourn_inferior = debug_to_mourn_inferior;
2577 current_target.to_can_run = debug_to_can_run;
2578 current_target.to_notice_signals = debug_to_notice_signals;
2579 current_target.to_thread_alive = debug_to_thread_alive;
2580 current_target.to_stop = debug_to_stop;
2581 current_target.to_query = debug_to_query;
2582 current_target.to_enable_exception_callback = debug_to_enable_exception_callback;
2583 current_target.to_get_current_exception_event = debug_to_get_current_exception_event;
2584 current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file;
2585 current_target.to_core_file_to_sym_file = debug_to_core_file_to_sym_file;
2590 static char targ_desc[] =
2591 "Names of targets and files being debugged.\n\
2592 Shows the entire stack of targets currently in use (including the exec-file,\n\
2593 core-file, and process, if any), as well as the symbol file name.";
2596 initialize_targets ()
2598 init_dummy_target ();
2599 push_target (&dummy_target);
2601 add_info ("target", target_info, targ_desc);
2602 add_info ("files", target_info, targ_desc);
2605 add_set_cmd ("targetdebug", class_maintenance, var_zinteger,
2606 (char *)&targetdebug,
2607 "Set target debugging.\n\
2608 When non-zero, target debugging is enabled.", &setlist),
2611 if (!STREQ (signals[TARGET_SIGNAL_LAST].string, "TARGET_SIGNAL_MAGIC"))