1 /* Select target systems and architectures at runtime for GDB.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 Free Software Foundation, Inc.
5 Contributed by Cygnus Support.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
26 #include "gdb_string.h"
41 static void target_info (char *, int);
43 static void cleanup_target (struct target_ops *);
45 static void maybe_kill_then_create_inferior (char *, char *, char **);
47 static void maybe_kill_then_attach (char *, int);
49 static void kill_or_be_killed (int);
51 static void default_terminal_info (char *, int);
53 static int default_region_size_ok_for_hw_watchpoint (int);
55 static int nosymbol (char *, CORE_ADDR *);
57 static void tcomplain (void);
59 static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *);
61 static int return_zero (void);
63 static int return_one (void);
65 static int return_minus_one (void);
67 void target_ignore (void);
69 static void target_command (char *, int);
71 static struct target_ops *find_default_run_target (char *);
73 static void update_current_target (void);
75 static void nosupport_runtime (void);
77 static void normal_target_post_startup_inferior (ptid_t ptid);
79 /* Transfer LEN bytes between target address MEMADDR and GDB address
80 MYADDR. Returns 0 for success, errno code for failure (which
81 includes partial transfers -- if you want a more useful response to
82 partial transfers, try either target_read_memory_partial or
83 target_write_memory_partial). */
85 static int target_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
88 static void init_dummy_target (void);
90 static void debug_to_open (char *, int);
92 static void debug_to_close (int);
94 static void debug_to_attach (char *, int);
96 static void debug_to_detach (char *, int);
98 static void debug_to_resume (ptid_t, int, enum target_signal);
100 static ptid_t debug_to_wait (ptid_t, struct target_waitstatus *);
102 static void debug_to_fetch_registers (int);
104 static void debug_to_store_registers (int);
106 static void debug_to_prepare_to_store (void);
108 static int debug_to_xfer_memory (CORE_ADDR, char *, int, int,
109 struct mem_attrib *, struct target_ops *);
111 static void debug_to_files_info (struct target_ops *);
113 static int debug_to_insert_breakpoint (CORE_ADDR, char *);
115 static int debug_to_remove_breakpoint (CORE_ADDR, char *);
117 static int debug_to_can_use_hw_breakpoint (int, int, int);
119 static int debug_to_insert_hw_breakpoint (CORE_ADDR, char *);
121 static int debug_to_remove_hw_breakpoint (CORE_ADDR, char *);
123 static int debug_to_insert_watchpoint (CORE_ADDR, int, int);
125 static int debug_to_remove_watchpoint (CORE_ADDR, int, int);
127 static int debug_to_stopped_by_watchpoint (void);
129 static CORE_ADDR debug_to_stopped_data_address (void);
131 static int debug_to_region_size_ok_for_hw_watchpoint (int);
133 static void debug_to_terminal_init (void);
135 static void debug_to_terminal_inferior (void);
137 static void debug_to_terminal_ours_for_output (void);
139 static void debug_to_terminal_save_ours (void);
141 static void debug_to_terminal_ours (void);
143 static void debug_to_terminal_info (char *, int);
145 static void debug_to_kill (void);
147 static void debug_to_load (char *, int);
149 static int debug_to_lookup_symbol (char *, CORE_ADDR *);
151 static void debug_to_create_inferior (char *, char *, char **);
153 static void debug_to_mourn_inferior (void);
155 static int debug_to_can_run (void);
157 static void debug_to_notice_signals (ptid_t);
159 static int debug_to_thread_alive (ptid_t);
161 static void debug_to_stop (void);
163 static int debug_to_query (int /*char */ , char *, char *, int *);
165 /* Pointer to array of target architecture structures; the size of the
166 array; the current index into the array; the allocated size of the
168 struct target_ops **target_structs;
169 unsigned target_struct_size;
170 unsigned target_struct_index;
171 unsigned target_struct_allocsize;
172 #define DEFAULT_ALLOCSIZE 10
174 /* The initial current target, so that there is always a semi-valid
177 static struct target_ops dummy_target;
179 /* Top of target stack. */
181 struct target_stack_item *target_stack;
183 /* The target structure we are currently using to talk to a process
184 or file or whatever "inferior" we have. */
186 struct target_ops current_target;
188 /* Command list for target. */
190 static struct cmd_list_element *targetlist = NULL;
192 /* Nonzero if we are debugging an attached outside process
193 rather than an inferior. */
197 /* Non-zero if we want to see trace of target level stuff. */
199 static int targetdebug = 0;
201 static void setup_target_debug (void);
203 DCACHE *target_dcache;
205 /* The user just typed 'target' without the name of a target. */
209 target_command (char *arg, int from_tty)
211 fputs_filtered ("Argument required (target name). Try `help target'\n",
215 /* Add a possible target architecture to the list. */
218 add_target (struct target_ops *t)
222 target_struct_allocsize = DEFAULT_ALLOCSIZE;
223 target_structs = (struct target_ops **) xmalloc
224 (target_struct_allocsize * sizeof (*target_structs));
226 if (target_struct_size >= target_struct_allocsize)
228 target_struct_allocsize *= 2;
229 target_structs = (struct target_ops **)
230 xrealloc ((char *) target_structs,
231 target_struct_allocsize * sizeof (*target_structs));
233 target_structs[target_struct_size++] = t;
234 /* cleanup_target (t); */
236 if (targetlist == NULL)
237 add_prefix_cmd ("target", class_run, target_command,
238 "Connect to a target machine or process.\n\
239 The first argument is the type or protocol of the target machine.\n\
240 Remaining arguments are interpreted by the target protocol. For more\n\
241 information on the arguments for a particular protocol, type\n\
242 `help target ' followed by the protocol name.",
243 &targetlist, "target ", 0, &cmdlist);
244 add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist);
255 target_load (char *arg, int from_tty)
257 dcache_invalidate (target_dcache);
258 (*current_target.to_load) (arg, from_tty);
263 nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write,
264 struct target_ops *t)
266 errno = EIO; /* Can't read/write this location */
267 return 0; /* No bytes handled */
273 error ("You can't do that when your target is `%s'",
274 current_target.to_shortname);
280 error ("You can't do that without a process to debug.");
285 nosymbol (char *name, CORE_ADDR *addrp)
287 return 1; /* Symbol does not exist in target env */
292 nosupport_runtime (void)
294 if (ptid_equal (inferior_ptid, null_ptid))
297 error ("No run-time support for this");
303 default_terminal_info (char *args, int from_tty)
305 printf_unfiltered ("No saved terminal information.\n");
308 /* This is the default target_create_inferior and target_attach function.
309 If the current target is executing, it asks whether to kill it off.
310 If this function returns without calling error(), it has killed off
311 the target, and the operation should be attempted. */
314 kill_or_be_killed (int from_tty)
316 if (target_has_execution)
318 printf_unfiltered ("You are already running a program:\n");
319 target_files_info ();
320 if (query ("Kill it? "))
323 if (target_has_execution)
324 error ("Killing the program did not help.");
329 error ("Program not killed.");
336 maybe_kill_then_attach (char *args, int from_tty)
338 kill_or_be_killed (from_tty);
339 target_attach (args, from_tty);
343 maybe_kill_then_create_inferior (char *exec, char *args, char **env)
345 kill_or_be_killed (0);
346 target_create_inferior (exec, args, env);
349 /* Clean up a target struct so it no longer has any zero pointers in it.
350 We default entries, at least to stubs that print error messages. */
353 cleanup_target (struct target_ops *t)
356 #define de_fault(field, value) \
361 (void (*) (char *, int))
367 maybe_kill_then_attach);
368 de_fault (to_post_attach,
372 (void (*) (char *, int))
375 (void (*) (ptid_t, int, enum target_signal))
378 (ptid_t (*) (ptid_t, struct target_waitstatus *))
380 de_fault (to_post_wait,
381 (void (*) (ptid_t, int))
383 de_fault (to_fetch_registers,
386 de_fault (to_store_registers,
389 de_fault (to_prepare_to_store,
392 de_fault (to_xfer_memory,
393 (int (*) (CORE_ADDR, char *, int, int, struct mem_attrib *, struct target_ops *))
395 de_fault (to_files_info,
396 (void (*) (struct target_ops *))
398 de_fault (to_insert_breakpoint,
399 memory_insert_breakpoint);
400 de_fault (to_remove_breakpoint,
401 memory_remove_breakpoint);
402 de_fault (to_can_use_hw_breakpoint,
403 (int (*) (int, int, int))
405 de_fault (to_insert_hw_breakpoint,
406 (int (*) (CORE_ADDR, char *))
408 de_fault (to_remove_hw_breakpoint,
409 (int (*) (CORE_ADDR, char *))
411 de_fault (to_insert_watchpoint,
412 (int (*) (CORE_ADDR, int, int))
414 de_fault (to_remove_watchpoint,
415 (int (*) (CORE_ADDR, int, int))
417 de_fault (to_stopped_by_watchpoint,
420 de_fault (to_stopped_data_address,
421 (CORE_ADDR (*) (void))
423 de_fault (to_region_size_ok_for_hw_watchpoint,
424 default_region_size_ok_for_hw_watchpoint);
425 de_fault (to_terminal_init,
428 de_fault (to_terminal_inferior,
431 de_fault (to_terminal_ours_for_output,
434 de_fault (to_terminal_ours,
437 de_fault (to_terminal_save_ours,
440 de_fault (to_terminal_info,
441 default_terminal_info);
446 (void (*) (char *, int))
448 de_fault (to_lookup_symbol,
449 (int (*) (char *, CORE_ADDR *))
451 de_fault (to_create_inferior,
452 maybe_kill_then_create_inferior);
453 de_fault (to_post_startup_inferior,
456 de_fault (to_acknowledge_created_inferior,
459 de_fault (to_insert_fork_catchpoint,
462 de_fault (to_remove_fork_catchpoint,
465 de_fault (to_insert_vfork_catchpoint,
468 de_fault (to_remove_vfork_catchpoint,
471 de_fault (to_follow_fork,
474 de_fault (to_insert_exec_catchpoint,
477 de_fault (to_remove_exec_catchpoint,
480 de_fault (to_reported_exec_events_per_exec_call,
483 de_fault (to_has_exited,
484 (int (*) (int, int, int *))
486 de_fault (to_mourn_inferior,
489 de_fault (to_can_run,
491 de_fault (to_notice_signals,
494 de_fault (to_thread_alive,
497 de_fault (to_find_new_threads,
500 de_fault (to_extra_thread_info,
501 (char *(*) (struct thread_info *))
507 (void (*) (char *, struct ui_file *))
509 de_fault (to_enable_exception_callback,
510 (struct symtab_and_line * (*) (enum exception_event_kind, int))
512 de_fault (to_get_current_exception_event,
513 (struct exception_event_record * (*) (void))
515 de_fault (to_pid_to_exec_file,
518 de_fault (to_can_async_p,
521 de_fault (to_is_async_p,
525 (void (*) (void (*) (enum inferior_event_type, void*), void*))
530 /* Go through the target stack from top to bottom, copying over zero entries in
531 current_target. In effect, we are doing class inheritance through the
532 pushed target vectors. */
535 update_current_target (void)
537 struct target_stack_item *item;
538 struct target_ops *t;
540 /* First, reset current_target */
541 memset (¤t_target, 0, sizeof current_target);
543 for (item = target_stack; item; item = item->next)
545 t = item->target_ops;
547 #define INHERIT(FIELD, TARGET) \
548 if (!current_target.FIELD) \
549 current_target.FIELD = TARGET->FIELD
551 INHERIT (to_shortname, t);
552 INHERIT (to_longname, t);
554 INHERIT (to_open, t);
555 INHERIT (to_close, t);
556 INHERIT (to_attach, t);
557 INHERIT (to_post_attach, t);
558 INHERIT (to_detach, t);
559 INHERIT (to_resume, t);
560 INHERIT (to_wait, t);
561 INHERIT (to_post_wait, t);
562 INHERIT (to_fetch_registers, t);
563 INHERIT (to_store_registers, t);
564 INHERIT (to_prepare_to_store, t);
565 INHERIT (to_xfer_memory, t);
566 INHERIT (to_files_info, t);
567 INHERIT (to_insert_breakpoint, t);
568 INHERIT (to_remove_breakpoint, t);
569 INHERIT (to_can_use_hw_breakpoint, t);
570 INHERIT (to_insert_hw_breakpoint, t);
571 INHERIT (to_remove_hw_breakpoint, t);
572 INHERIT (to_insert_watchpoint, t);
573 INHERIT (to_remove_watchpoint, t);
574 INHERIT (to_stopped_data_address, t);
575 INHERIT (to_stopped_by_watchpoint, t);
576 INHERIT (to_have_continuable_watchpoint, t);
577 INHERIT (to_region_size_ok_for_hw_watchpoint, t);
578 INHERIT (to_terminal_init, t);
579 INHERIT (to_terminal_inferior, t);
580 INHERIT (to_terminal_ours_for_output, t);
581 INHERIT (to_terminal_ours, t);
582 INHERIT (to_terminal_save_ours, t);
583 INHERIT (to_terminal_info, t);
584 INHERIT (to_kill, t);
585 INHERIT (to_load, t);
586 INHERIT (to_lookup_symbol, t);
587 INHERIT (to_create_inferior, t);
588 INHERIT (to_post_startup_inferior, t);
589 INHERIT (to_acknowledge_created_inferior, t);
590 INHERIT (to_insert_fork_catchpoint, t);
591 INHERIT (to_remove_fork_catchpoint, t);
592 INHERIT (to_insert_vfork_catchpoint, t);
593 INHERIT (to_remove_vfork_catchpoint, t);
594 INHERIT (to_follow_fork, t);
595 INHERIT (to_insert_exec_catchpoint, t);
596 INHERIT (to_remove_exec_catchpoint, t);
597 INHERIT (to_reported_exec_events_per_exec_call, t);
598 INHERIT (to_has_exited, t);
599 INHERIT (to_mourn_inferior, t);
600 INHERIT (to_can_run, t);
601 INHERIT (to_notice_signals, t);
602 INHERIT (to_thread_alive, t);
603 INHERIT (to_find_new_threads, t);
604 INHERIT (to_pid_to_str, t);
605 INHERIT (to_extra_thread_info, t);
606 INHERIT (to_stop, t);
607 INHERIT (to_query, t);
608 INHERIT (to_rcmd, t);
609 INHERIT (to_enable_exception_callback, t);
610 INHERIT (to_get_current_exception_event, t);
611 INHERIT (to_pid_to_exec_file, t);
612 INHERIT (to_stratum, t);
613 INHERIT (to_has_all_memory, t);
614 INHERIT (to_has_memory, t);
615 INHERIT (to_has_stack, t);
616 INHERIT (to_has_registers, t);
617 INHERIT (to_has_execution, t);
618 INHERIT (to_has_thread_control, t);
619 INHERIT (to_sections, t);
620 INHERIT (to_sections_end, t);
621 INHERIT (to_can_async_p, t);
622 INHERIT (to_is_async_p, t);
623 INHERIT (to_async, t);
624 INHERIT (to_async_mask_value, t);
625 INHERIT (to_find_memory_regions, t);
626 INHERIT (to_make_corefile_notes, t);
627 INHERIT (to_get_thread_local_address, t);
628 INHERIT (to_magic, t);
634 /* Push a new target type into the stack of the existing target accessors,
635 possibly superseding some of the existing accessors.
637 Result is zero if the pushed target ended up on top of the stack,
638 nonzero if at least one target is on top of it.
640 Rather than allow an empty stack, we always have the dummy target at
641 the bottom stratum, so we can call the function vectors without
645 push_target (struct target_ops *t)
647 struct target_stack_item *cur, *prev, *tmp;
649 /* Check magic number. If wrong, it probably means someone changed
650 the struct definition, but not all the places that initialize one. */
651 if (t->to_magic != OPS_MAGIC)
653 fprintf_unfiltered (gdb_stderr,
654 "Magic number of %s target struct wrong\n",
656 internal_error (__FILE__, __LINE__, "failed internal consistency check");
659 /* Find the proper stratum to install this target in. */
661 for (prev = NULL, cur = target_stack; cur; prev = cur, cur = cur->next)
663 if ((int) (t->to_stratum) >= (int) (cur->target_ops->to_stratum))
667 /* If there's already targets at this stratum, remove them. */
670 while (t->to_stratum == cur->target_ops->to_stratum)
672 /* There's already something on this stratum. Close it off. */
673 if (cur->target_ops->to_close)
674 (cur->target_ops->to_close) (0);
676 prev->next = cur->next; /* Unchain old target_ops */
678 target_stack = cur->next; /* Unchain first on list */
684 /* We have removed all targets in our stratum, now add the new one. */
686 tmp = (struct target_stack_item *)
687 xmalloc (sizeof (struct target_stack_item));
696 update_current_target ();
698 cleanup_target (¤t_target); /* Fill in the gaps */
701 setup_target_debug ();
706 /* Remove a target_ops vector from the stack, wherever it may be.
707 Return how many times it was removed (0 or 1). */
710 unpush_target (struct target_ops *t)
712 struct target_stack_item *cur, *prev;
715 t->to_close (0); /* Let it clean up */
717 /* Look for the specified target. Note that we assume that a target
718 can only occur once in the target stack. */
720 for (cur = target_stack, prev = NULL; cur; prev = cur, cur = cur->next)
721 if (cur->target_ops == t)
725 return 0; /* Didn't find target_ops, quit now */
727 /* Unchain the target */
730 target_stack = cur->next;
732 prev->next = cur->next;
734 xfree (cur); /* Release the target_stack_item */
736 update_current_target ();
737 cleanup_target (¤t_target);
745 (current_target.to_close) (0); /* Let it clean up */
746 if (unpush_target (target_stack->target_ops) == 1)
749 fprintf_unfiltered (gdb_stderr,
750 "pop_target couldn't find target %s\n",
751 current_target.to_shortname);
752 internal_error (__FILE__, __LINE__, "failed internal consistency check");
756 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
758 /* target_read_string -- read a null terminated string, up to LEN bytes,
759 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
760 Set *STRING to a pointer to malloc'd memory containing the data; the caller
761 is responsible for freeing it. Return the number of bytes successfully
765 target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop)
767 int tlen, origlen, offset, i;
771 int buffer_allocated;
773 unsigned int nbytes_read = 0;
775 /* Small for testing. */
776 buffer_allocated = 4;
777 buffer = xmalloc (buffer_allocated);
784 tlen = MIN (len, 4 - (memaddr & 3));
785 offset = memaddr & 3;
787 errcode = target_xfer_memory (memaddr & ~3, buf, 4, 0);
790 /* The transfer request might have crossed the boundary to an
791 unallocated region of memory. Retry the transfer, requesting
795 errcode = target_xfer_memory (memaddr, buf, 1, 0);
800 if (bufptr - buffer + tlen > buffer_allocated)
803 bytes = bufptr - buffer;
804 buffer_allocated *= 2;
805 buffer = xrealloc (buffer, buffer_allocated);
806 bufptr = buffer + bytes;
809 for (i = 0; i < tlen; i++)
811 *bufptr++ = buf[i + offset];
812 if (buf[i + offset] == '\000')
814 nbytes_read += i + 1;
831 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
832 GDB's memory at MYADDR. Returns either 0 for success or an errno value
835 If an error occurs, no guarantee is made about the contents of the data at
836 MYADDR. In particular, the caller should not depend upon partial reads
837 filling the buffer with good data. There is no way for the caller to know
838 how much good data might have been transfered anyway. Callers that can
839 deal with partial reads should call target_read_memory_partial. */
842 target_read_memory (CORE_ADDR memaddr, char *myaddr, int len)
844 return target_xfer_memory (memaddr, myaddr, len, 0);
848 target_write_memory (CORE_ADDR memaddr, char *myaddr, int len)
850 return target_xfer_memory (memaddr, myaddr, len, 1);
853 static int trust_readonly = 0;
855 /* Move memory to or from the targets. The top target gets priority;
856 if it cannot handle it, it is offered to the next one down, etc.
858 Result is -1 on error, or the number of bytes transfered. */
861 do_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
862 struct mem_attrib *attrib)
866 struct target_ops *t;
867 struct target_stack_item *item;
869 /* Zero length requests are ok and require no work. */
873 /* to_xfer_memory is not guaranteed to set errno, even when it returns
877 if (!write && trust_readonly)
879 /* User-settable option, "trust-readonly-sections". If true,
880 then memory from any SEC_READONLY bfd section may be read
881 directly from the bfd file. */
883 struct section_table *secp;
885 for (secp = current_target.to_sections;
886 secp < current_target.to_sections_end;
889 if (bfd_get_section_flags (secp->bfd, secp->the_bfd_section)
891 if (memaddr >= secp->addr && memaddr < secp->endaddr)
892 return xfer_memory (memaddr, myaddr, len, 0,
893 attrib, ¤t_target);
897 /* The quick case is that the top target can handle the transfer. */
898 res = current_target.to_xfer_memory
899 (memaddr, myaddr, len, write, attrib, ¤t_target);
901 /* If res <= 0 then we call it again in the loop. Ah well. */
904 for (item = target_stack; item; item = item->next)
906 t = item->target_ops;
907 if (!t->to_has_memory)
910 res = t->to_xfer_memory (memaddr, myaddr, len, write, attrib, t);
912 break; /* Handled all or part of xfer */
913 if (t->to_has_all_memory)
925 /* Perform a memory transfer. Iterate until the entire region has
928 Result is 0 or errno value. */
931 target_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write)
935 struct mem_region *region;
937 /* Zero length requests are ok and require no work. */
945 region = lookup_mem_region(memaddr);
946 if (memaddr + len < region->hi)
949 reg_len = region->hi - memaddr;
951 switch (region->attrib.mode)
966 if (region->attrib.cache)
967 res = dcache_xfer_memory (target_dcache, memaddr, myaddr,
970 res = do_xfer_memory (memaddr, myaddr, reg_len, write,
975 /* If this address is for nonexistent memory, read zeros
976 if reading, or do nothing if writing. Return
979 memset (myaddr, 0, len);
993 return 0; /* We managed to cover it all somehow. */
997 /* Perform a partial memory transfer.
999 Result is -1 on error, or the number of bytes transfered. */
1002 target_xfer_memory_partial (CORE_ADDR memaddr, char *myaddr, int len,
1003 int write_p, int *err)
1007 struct mem_region *region;
1009 /* Zero length requests are ok and require no work. */
1016 region = lookup_mem_region(memaddr);
1017 if (memaddr + len < region->hi)
1020 reg_len = region->hi - memaddr;
1022 switch (region->attrib.mode)
1041 if (region->attrib.cache)
1042 res = dcache_xfer_memory (target_dcache, memaddr, myaddr,
1045 res = do_xfer_memory (memaddr, myaddr, reg_len, write_p,
1063 target_read_memory_partial (CORE_ADDR memaddr, char *buf, int len, int *err)
1065 return target_xfer_memory_partial (memaddr, buf, len, 0, err);
1069 target_write_memory_partial (CORE_ADDR memaddr, char *buf, int len, int *err)
1071 return target_xfer_memory_partial (memaddr, buf, len, 1, err);
1076 target_info (char *args, int from_tty)
1078 struct target_ops *t;
1079 struct target_stack_item *item;
1080 int has_all_mem = 0;
1082 if (symfile_objfile != NULL)
1083 printf_unfiltered ("Symbols from \"%s\".\n", symfile_objfile->name);
1085 #ifdef FILES_INFO_HOOK
1086 if (FILES_INFO_HOOK ())
1090 for (item = target_stack; item; item = item->next)
1092 t = item->target_ops;
1094 if (!t->to_has_memory)
1097 if ((int) (t->to_stratum) <= (int) dummy_stratum)
1100 printf_unfiltered ("\tWhile running this, GDB does not access memory from...\n");
1101 printf_unfiltered ("%s:\n", t->to_longname);
1102 (t->to_files_info) (t);
1103 has_all_mem = t->to_has_all_memory;
1107 /* This is to be called by the open routine before it does
1111 target_preopen (int from_tty)
1115 if (target_has_execution)
1118 || query ("A program is being debugged already. Kill it? "))
1121 error ("Program not killed.");
1124 /* Calling target_kill may remove the target from the stack. But if
1125 it doesn't (which seems like a win for UDI), remove it now. */
1127 if (target_has_execution)
1131 /* Detach a target after doing deferred register stores. */
1134 target_detach (char *args, int from_tty)
1136 /* Handle any optimized stores to the inferior. */
1137 #ifdef DO_DEFERRED_STORES
1140 (current_target.to_detach) (args, from_tty);
1144 target_link (char *modname, CORE_ADDR *t_reloc)
1146 if (STREQ (current_target.to_shortname, "rombug"))
1148 (current_target.to_lookup_symbol) (modname, t_reloc);
1150 error ("Unable to link to %s and get relocation in rombug", modname);
1153 *t_reloc = (CORE_ADDR) -1;
1157 target_async_mask (int mask)
1159 int saved_async_masked_status = target_async_mask_value;
1160 target_async_mask_value = mask;
1161 return saved_async_masked_status;
1164 /* Look through the list of possible targets for a target that can
1165 execute a run or attach command without any other data. This is
1166 used to locate the default process stratum.
1168 Result is always valid (error() is called for errors). */
1170 static struct target_ops *
1171 find_default_run_target (char *do_mesg)
1173 struct target_ops **t;
1174 struct target_ops *runable = NULL;
1179 for (t = target_structs; t < target_structs + target_struct_size;
1182 if ((*t)->to_can_run && target_can_run (*t))
1190 error ("Don't know how to %s. Try \"help target\".", do_mesg);
1196 find_default_attach (char *args, int from_tty)
1198 struct target_ops *t;
1200 t = find_default_run_target ("attach");
1201 (t->to_attach) (args, from_tty);
1206 find_default_create_inferior (char *exec_file, char *allargs, char **env)
1208 struct target_ops *t;
1210 t = find_default_run_target ("run");
1211 (t->to_create_inferior) (exec_file, allargs, env);
1216 default_region_size_ok_for_hw_watchpoint (int byte_count)
1218 return (byte_count <= DEPRECATED_REGISTER_SIZE);
1234 return_minus_one (void)
1240 * Resize the to_sections pointer. Also make sure that anyone that
1241 * was holding on to an old value of it gets updated.
1242 * Returns the old size.
1246 target_resize_to_sections (struct target_ops *target, int num_added)
1248 struct target_ops **t;
1249 struct section_table *old_value;
1252 old_value = target->to_sections;
1254 if (target->to_sections)
1256 old_count = target->to_sections_end - target->to_sections;
1257 target->to_sections = (struct section_table *)
1258 xrealloc ((char *) target->to_sections,
1259 (sizeof (struct section_table)) * (num_added + old_count));
1264 target->to_sections = (struct section_table *)
1265 xmalloc ((sizeof (struct section_table)) * num_added);
1267 target->to_sections_end = target->to_sections + (num_added + old_count);
1269 /* Check to see if anyone else was pointing to this structure.
1270 If old_value was null, then no one was. */
1274 for (t = target_structs; t < target_structs + target_struct_size;
1277 if ((*t)->to_sections == old_value)
1279 (*t)->to_sections = target->to_sections;
1280 (*t)->to_sections_end = target->to_sections_end;
1289 /* Remove all target sections taken from ABFD.
1291 Scan the current target stack for targets whose section tables
1292 refer to sections from BFD, and remove those sections. We use this
1293 when we notice that the inferior has unloaded a shared object, for
1296 remove_target_sections (bfd *abfd)
1298 struct target_ops **t;
1300 for (t = target_structs; t < target_structs + target_struct_size; t++)
1302 struct section_table *src, *dest;
1304 dest = (*t)->to_sections;
1305 for (src = (*t)->to_sections; src < (*t)->to_sections_end; src++)
1306 if (src->bfd != abfd)
1308 /* Keep this section. */
1309 if (dest < src) *dest = *src;
1313 /* If we've dropped any sections, resize the section table. */
1315 target_resize_to_sections (*t, dest - src);
1322 /* Find a single runnable target in the stack and return it. If for
1323 some reason there is more than one, return NULL. */
1326 find_run_target (void)
1328 struct target_ops **t;
1329 struct target_ops *runable = NULL;
1334 for (t = target_structs; t < target_structs + target_struct_size; ++t)
1336 if ((*t)->to_can_run && target_can_run (*t))
1343 return (count == 1 ? runable : NULL);
1346 /* Find a single core_stratum target in the list of targets and return it.
1347 If for some reason there is more than one, return NULL. */
1350 find_core_target (void)
1352 struct target_ops **t;
1353 struct target_ops *runable = NULL;
1358 for (t = target_structs; t < target_structs + target_struct_size;
1361 if ((*t)->to_stratum == core_stratum)
1368 return (count == 1 ? runable : NULL);
1372 * Find the next target down the stack from the specified target.
1376 find_target_beneath (struct target_ops *t)
1378 struct target_stack_item *cur;
1380 for (cur = target_stack; cur; cur = cur->next)
1381 if (cur->target_ops == t)
1384 if (cur == NULL || cur->next == NULL)
1387 return cur->next->target_ops;
1391 /* The inferior process has died. Long live the inferior! */
1394 generic_mourn_inferior (void)
1396 extern int show_breakpoint_hit_counts;
1398 inferior_ptid = null_ptid;
1400 breakpoint_init_inferior (inf_exited);
1401 registers_changed ();
1403 #ifdef CLEAR_DEFERRED_STORES
1404 /* Delete any pending stores to the inferior... */
1405 CLEAR_DEFERRED_STORES;
1408 reopen_exec_file ();
1409 reinit_frame_cache ();
1411 /* It is confusing to the user for ignore counts to stick around
1412 from previous runs of the inferior. So clear them. */
1413 /* However, it is more confusing for the ignore counts to disappear when
1414 using hit counts. So don't clear them if we're counting hits. */
1415 if (!show_breakpoint_hit_counts)
1416 breakpoint_clear_ignore_counts ();
1422 /* Helper function for child_wait and the Lynx derivatives of child_wait.
1423 HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
1424 translation of that in OURSTATUS. */
1426 store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus)
1428 #ifdef CHILD_SPECIAL_WAITSTATUS
1429 /* CHILD_SPECIAL_WAITSTATUS should return nonzero and set *OURSTATUS
1430 if it wants to deal with hoststatus. */
1431 if (CHILD_SPECIAL_WAITSTATUS (ourstatus, hoststatus))
1435 if (WIFEXITED (hoststatus))
1437 ourstatus->kind = TARGET_WAITKIND_EXITED;
1438 ourstatus->value.integer = WEXITSTATUS (hoststatus);
1440 else if (!WIFSTOPPED (hoststatus))
1442 ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
1443 ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus));
1447 ourstatus->kind = TARGET_WAITKIND_STOPPED;
1448 ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus));
1452 /* Returns zero to leave the inferior alone, one to interrupt it. */
1453 int (*target_activity_function) (void);
1454 int target_activity_fd;
1456 /* Convert a normal process ID to a string. Returns the string in a static
1460 normal_pid_to_str (ptid_t ptid)
1462 static char buf[30];
1464 sprintf (buf, "process %d", PIDGET (ptid));
1468 /* Some targets (such as ttrace-based HPUX) don't allow us to request
1469 notification of inferior events such as fork and vork immediately
1470 after the inferior is created. (This because of how gdb gets an
1471 inferior created via invoking a shell to do it. In such a scenario,
1472 if the shell init file has commands in it, the shell will fork and
1473 exec for each of those commands, and we will see each such fork
1476 This function is used by all targets that allow us to request
1477 notification of forks, etc at inferior creation time; e.g., in
1478 target_acknowledge_forked_child.
1481 normal_target_post_startup_inferior (ptid_t ptid)
1483 /* This space intentionally left blank. */
1486 /* Error-catcher for target_find_memory_regions */
1488 static int dummy_find_memory_regions (int (*ignore1) (), void *ignore2)
1490 error ("No target.");
1494 /* Error-catcher for target_make_corefile_notes */
1496 static char * dummy_make_corefile_notes (bfd *ignore1, int *ignore2)
1498 error ("No target.");
1502 /* Set up the handful of non-empty slots needed by the dummy target
1506 init_dummy_target (void)
1508 dummy_target.to_shortname = "None";
1509 dummy_target.to_longname = "None";
1510 dummy_target.to_doc = "";
1511 dummy_target.to_attach = find_default_attach;
1512 dummy_target.to_create_inferior = find_default_create_inferior;
1513 dummy_target.to_pid_to_str = normal_pid_to_str;
1514 dummy_target.to_stratum = dummy_stratum;
1515 dummy_target.to_find_memory_regions = dummy_find_memory_regions;
1516 dummy_target.to_make_corefile_notes = dummy_make_corefile_notes;
1517 dummy_target.to_magic = OPS_MAGIC;
1521 static struct target_ops debug_target;
1524 debug_to_open (char *args, int from_tty)
1526 debug_target.to_open (args, from_tty);
1528 fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty);
1532 debug_to_close (int quitting)
1534 debug_target.to_close (quitting);
1536 fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting);
1540 debug_to_attach (char *args, int from_tty)
1542 debug_target.to_attach (args, from_tty);
1544 fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", args, from_tty);
1549 debug_to_post_attach (int pid)
1551 debug_target.to_post_attach (pid);
1553 fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid);
1557 debug_to_detach (char *args, int from_tty)
1559 debug_target.to_detach (args, from_tty);
1561 fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", args, from_tty);
1565 debug_to_resume (ptid_t ptid, int step, enum target_signal siggnal)
1567 debug_target.to_resume (ptid, step, siggnal);
1569 fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", PIDGET (ptid),
1570 step ? "step" : "continue",
1571 target_signal_to_name (siggnal));
1575 debug_to_wait (ptid_t ptid, struct target_waitstatus *status)
1579 retval = debug_target.to_wait (ptid, status);
1581 fprintf_unfiltered (gdb_stdlog,
1582 "target_wait (%d, status) = %d, ", PIDGET (ptid),
1584 fprintf_unfiltered (gdb_stdlog, "status->kind = ");
1585 switch (status->kind)
1587 case TARGET_WAITKIND_EXITED:
1588 fprintf_unfiltered (gdb_stdlog, "exited, status = %d\n",
1589 status->value.integer);
1591 case TARGET_WAITKIND_STOPPED:
1592 fprintf_unfiltered (gdb_stdlog, "stopped, signal = %s\n",
1593 target_signal_to_name (status->value.sig));
1595 case TARGET_WAITKIND_SIGNALLED:
1596 fprintf_unfiltered (gdb_stdlog, "signalled, signal = %s\n",
1597 target_signal_to_name (status->value.sig));
1599 case TARGET_WAITKIND_LOADED:
1600 fprintf_unfiltered (gdb_stdlog, "loaded\n");
1602 case TARGET_WAITKIND_FORKED:
1603 fprintf_unfiltered (gdb_stdlog, "forked\n");
1605 case TARGET_WAITKIND_VFORKED:
1606 fprintf_unfiltered (gdb_stdlog, "vforked\n");
1608 case TARGET_WAITKIND_EXECD:
1609 fprintf_unfiltered (gdb_stdlog, "execd\n");
1611 case TARGET_WAITKIND_SPURIOUS:
1612 fprintf_unfiltered (gdb_stdlog, "spurious\n");
1615 fprintf_unfiltered (gdb_stdlog, "unknown???\n");
1623 debug_to_post_wait (ptid_t ptid, int status)
1625 debug_target.to_post_wait (ptid, status);
1627 fprintf_unfiltered (gdb_stdlog, "target_post_wait (%d, %d)\n",
1628 PIDGET (ptid), status);
1632 debug_print_register (const char * func, int regno)
1634 fprintf_unfiltered (gdb_stdlog, "%s ", func);
1635 if (regno >= 0 && regno < NUM_REGS + NUM_PSEUDO_REGS
1636 && REGISTER_NAME (regno) != NULL && REGISTER_NAME (regno)[0] != '\0')
1637 fprintf_unfiltered (gdb_stdlog, "(%s)", REGISTER_NAME (regno));
1639 fprintf_unfiltered (gdb_stdlog, "(%d)", regno);
1643 unsigned char buf[MAX_REGISTER_SIZE];
1644 deprecated_read_register_gen (regno, buf);
1645 fprintf_unfiltered (gdb_stdlog, " = ");
1646 for (i = 0; i < REGISTER_RAW_SIZE (regno); i++)
1648 fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]);
1650 if (REGISTER_RAW_SIZE (regno) <= sizeof (LONGEST))
1652 fprintf_unfiltered (gdb_stdlog, " 0x%s %s",
1653 paddr_nz (read_register (regno)),
1654 paddr_d (read_register (regno)));
1657 fprintf_unfiltered (gdb_stdlog, "\n");
1661 debug_to_fetch_registers (int regno)
1663 debug_target.to_fetch_registers (regno);
1664 debug_print_register ("target_fetch_registers", regno);
1668 debug_to_store_registers (int regno)
1670 debug_target.to_store_registers (regno);
1671 debug_print_register ("target_store_registers", regno);
1672 fprintf_unfiltered (gdb_stdlog, "\n");
1676 debug_to_prepare_to_store (void)
1678 debug_target.to_prepare_to_store ();
1680 fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n");
1684 debug_to_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
1685 struct mem_attrib *attrib,
1686 struct target_ops *target)
1690 retval = debug_target.to_xfer_memory (memaddr, myaddr, len, write,
1693 fprintf_unfiltered (gdb_stdlog,
1694 "target_xfer_memory (0x%x, xxx, %d, %s, xxx) = %d",
1695 (unsigned int) memaddr, /* possable truncate long long */
1696 len, write ? "write" : "read", retval);
1704 fputs_unfiltered (", bytes =", gdb_stdlog);
1705 for (i = 0; i < retval; i++)
1707 if ((((long) &(myaddr[i])) & 0xf) == 0)
1708 fprintf_unfiltered (gdb_stdlog, "\n");
1709 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
1713 fputc_unfiltered ('\n', gdb_stdlog);
1719 debug_to_files_info (struct target_ops *target)
1721 debug_target.to_files_info (target);
1723 fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n");
1727 debug_to_insert_breakpoint (CORE_ADDR addr, char *save)
1731 retval = debug_target.to_insert_breakpoint (addr, save);
1733 fprintf_unfiltered (gdb_stdlog,
1734 "target_insert_breakpoint (0x%lx, xxx) = %ld\n",
1735 (unsigned long) addr,
1736 (unsigned long) retval);
1741 debug_to_remove_breakpoint (CORE_ADDR addr, char *save)
1745 retval = debug_target.to_remove_breakpoint (addr, save);
1747 fprintf_unfiltered (gdb_stdlog,
1748 "target_remove_breakpoint (0x%lx, xxx) = %ld\n",
1749 (unsigned long) addr,
1750 (unsigned long) retval);
1755 debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty)
1759 retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty);
1761 fprintf_unfiltered (gdb_stdlog,
1762 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
1763 (unsigned long) type,
1764 (unsigned long) cnt,
1765 (unsigned long) from_tty,
1766 (unsigned long) retval);
1771 debug_to_region_size_ok_for_hw_watchpoint (int byte_count)
1775 retval = debug_target.to_region_size_ok_for_hw_watchpoint (byte_count);
1777 fprintf_unfiltered (gdb_stdlog,
1778 "TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT (%ld) = 0x%lx\n",
1779 (unsigned long) byte_count,
1780 (unsigned long) retval);
1785 debug_to_stopped_by_watchpoint (void)
1789 retval = debug_target.to_stopped_by_watchpoint ();
1791 fprintf_unfiltered (gdb_stdlog,
1792 "STOPPED_BY_WATCHPOINT () = %ld\n",
1793 (unsigned long) retval);
1798 debug_to_stopped_data_address (void)
1802 retval = debug_target.to_stopped_data_address ();
1804 fprintf_unfiltered (gdb_stdlog,
1805 "target_stopped_data_address () = 0x%lx\n",
1806 (unsigned long) retval);
1811 debug_to_insert_hw_breakpoint (CORE_ADDR addr, char *save)
1815 retval = debug_target.to_insert_hw_breakpoint (addr, save);
1817 fprintf_unfiltered (gdb_stdlog,
1818 "target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n",
1819 (unsigned long) addr,
1820 (unsigned long) retval);
1825 debug_to_remove_hw_breakpoint (CORE_ADDR addr, char *save)
1829 retval = debug_target.to_remove_hw_breakpoint (addr, save);
1831 fprintf_unfiltered (gdb_stdlog,
1832 "target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n",
1833 (unsigned long) addr,
1834 (unsigned long) retval);
1839 debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type)
1843 retval = debug_target.to_insert_watchpoint (addr, len, type);
1845 fprintf_unfiltered (gdb_stdlog,
1846 "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n",
1847 (unsigned long) addr, len, type, (unsigned long) retval);
1852 debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type)
1856 retval = debug_target.to_insert_watchpoint (addr, len, type);
1858 fprintf_unfiltered (gdb_stdlog,
1859 "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n",
1860 (unsigned long) addr, len, type, (unsigned long) retval);
1865 debug_to_terminal_init (void)
1867 debug_target.to_terminal_init ();
1869 fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n");
1873 debug_to_terminal_inferior (void)
1875 debug_target.to_terminal_inferior ();
1877 fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n");
1881 debug_to_terminal_ours_for_output (void)
1883 debug_target.to_terminal_ours_for_output ();
1885 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n");
1889 debug_to_terminal_ours (void)
1891 debug_target.to_terminal_ours ();
1893 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n");
1897 debug_to_terminal_save_ours (void)
1899 debug_target.to_terminal_save_ours ();
1901 fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n");
1905 debug_to_terminal_info (char *arg, int from_tty)
1907 debug_target.to_terminal_info (arg, from_tty);
1909 fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg,
1914 debug_to_kill (void)
1916 debug_target.to_kill ();
1918 fprintf_unfiltered (gdb_stdlog, "target_kill ()\n");
1922 debug_to_load (char *args, int from_tty)
1924 debug_target.to_load (args, from_tty);
1926 fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty);
1930 debug_to_lookup_symbol (char *name, CORE_ADDR *addrp)
1934 retval = debug_target.to_lookup_symbol (name, addrp);
1936 fprintf_unfiltered (gdb_stdlog, "target_lookup_symbol (%s, xxx)\n", name);
1942 debug_to_create_inferior (char *exec_file, char *args, char **env)
1944 debug_target.to_create_inferior (exec_file, args, env);
1946 fprintf_unfiltered (gdb_stdlog, "target_create_inferior (%s, %s, xxx)\n",
1951 debug_to_post_startup_inferior (ptid_t ptid)
1953 debug_target.to_post_startup_inferior (ptid);
1955 fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n",
1960 debug_to_acknowledge_created_inferior (int pid)
1962 debug_target.to_acknowledge_created_inferior (pid);
1964 fprintf_unfiltered (gdb_stdlog, "target_acknowledge_created_inferior (%d)\n",
1969 debug_to_insert_fork_catchpoint (int pid)
1973 retval = debug_target.to_insert_fork_catchpoint (pid);
1975 fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n",
1982 debug_to_remove_fork_catchpoint (int pid)
1986 retval = debug_target.to_remove_fork_catchpoint (pid);
1988 fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n",
1995 debug_to_insert_vfork_catchpoint (int pid)
1999 retval = debug_target.to_insert_vfork_catchpoint (pid);
2001 fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d)= %d\n",
2008 debug_to_remove_vfork_catchpoint (int pid)
2012 retval = debug_target.to_remove_vfork_catchpoint (pid);
2014 fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n",
2021 debug_to_follow_fork (int follow_child)
2023 int retval = debug_target.to_follow_fork (follow_child);
2025 fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n",
2026 follow_child, retval);
2032 debug_to_insert_exec_catchpoint (int pid)
2036 retval = debug_target.to_insert_exec_catchpoint (pid);
2038 fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n",
2045 debug_to_remove_exec_catchpoint (int pid)
2049 retval = debug_target.to_remove_exec_catchpoint (pid);
2051 fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n",
2058 debug_to_reported_exec_events_per_exec_call (void)
2060 int reported_exec_events;
2062 reported_exec_events = debug_target.to_reported_exec_events_per_exec_call ();
2064 fprintf_unfiltered (gdb_stdlog,
2065 "target_reported_exec_events_per_exec_call () = %d\n",
2066 reported_exec_events);
2068 return reported_exec_events;
2072 debug_to_has_exited (int pid, int wait_status, int *exit_status)
2076 has_exited = debug_target.to_has_exited (pid, wait_status, exit_status);
2078 fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n",
2079 pid, wait_status, *exit_status, has_exited);
2085 debug_to_mourn_inferior (void)
2087 debug_target.to_mourn_inferior ();
2089 fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n");
2093 debug_to_can_run (void)
2097 retval = debug_target.to_can_run ();
2099 fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval);
2105 debug_to_notice_signals (ptid_t ptid)
2107 debug_target.to_notice_signals (ptid);
2109 fprintf_unfiltered (gdb_stdlog, "target_notice_signals (%d)\n",
2114 debug_to_thread_alive (ptid_t ptid)
2118 retval = debug_target.to_thread_alive (ptid);
2120 fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n",
2121 PIDGET (ptid), retval);
2127 debug_to_find_new_threads (void)
2129 debug_target.to_find_new_threads ();
2131 fputs_unfiltered ("target_find_new_threads ()\n", gdb_stdlog);
2135 debug_to_stop (void)
2137 debug_target.to_stop ();
2139 fprintf_unfiltered (gdb_stdlog, "target_stop ()\n");
2143 debug_to_query (int type, char *req, char *resp, int *siz)
2147 retval = debug_target.to_query (type, req, resp, siz);
2149 fprintf_unfiltered (gdb_stdlog, "target_query (%c, %s, %s, %d) = %d\n", type, req, resp, *siz, retval);
2155 debug_to_rcmd (char *command,
2156 struct ui_file *outbuf)
2158 debug_target.to_rcmd (command, outbuf);
2159 fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command);
2162 static struct symtab_and_line *
2163 debug_to_enable_exception_callback (enum exception_event_kind kind, int enable)
2165 struct symtab_and_line *result;
2166 result = debug_target.to_enable_exception_callback (kind, enable);
2167 fprintf_unfiltered (gdb_stdlog,
2168 "target get_exception_callback_sal (%d, %d)\n",
2173 static struct exception_event_record *
2174 debug_to_get_current_exception_event (void)
2176 struct exception_event_record *result;
2177 result = debug_target.to_get_current_exception_event ();
2178 fprintf_unfiltered (gdb_stdlog, "target get_current_exception_event ()\n");
2183 debug_to_pid_to_exec_file (int pid)
2187 exec_file = debug_target.to_pid_to_exec_file (pid);
2189 fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n",
2196 setup_target_debug (void)
2198 memcpy (&debug_target, ¤t_target, sizeof debug_target);
2200 current_target.to_open = debug_to_open;
2201 current_target.to_close = debug_to_close;
2202 current_target.to_attach = debug_to_attach;
2203 current_target.to_post_attach = debug_to_post_attach;
2204 current_target.to_detach = debug_to_detach;
2205 current_target.to_resume = debug_to_resume;
2206 current_target.to_wait = debug_to_wait;
2207 current_target.to_post_wait = debug_to_post_wait;
2208 current_target.to_fetch_registers = debug_to_fetch_registers;
2209 current_target.to_store_registers = debug_to_store_registers;
2210 current_target.to_prepare_to_store = debug_to_prepare_to_store;
2211 current_target.to_xfer_memory = debug_to_xfer_memory;
2212 current_target.to_files_info = debug_to_files_info;
2213 current_target.to_insert_breakpoint = debug_to_insert_breakpoint;
2214 current_target.to_remove_breakpoint = debug_to_remove_breakpoint;
2215 current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint;
2216 current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint;
2217 current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint;
2218 current_target.to_insert_watchpoint = debug_to_insert_watchpoint;
2219 current_target.to_remove_watchpoint = debug_to_remove_watchpoint;
2220 current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint;
2221 current_target.to_stopped_data_address = debug_to_stopped_data_address;
2222 current_target.to_region_size_ok_for_hw_watchpoint = debug_to_region_size_ok_for_hw_watchpoint;
2223 current_target.to_terminal_init = debug_to_terminal_init;
2224 current_target.to_terminal_inferior = debug_to_terminal_inferior;
2225 current_target.to_terminal_ours_for_output = debug_to_terminal_ours_for_output;
2226 current_target.to_terminal_ours = debug_to_terminal_ours;
2227 current_target.to_terminal_save_ours = debug_to_terminal_save_ours;
2228 current_target.to_terminal_info = debug_to_terminal_info;
2229 current_target.to_kill = debug_to_kill;
2230 current_target.to_load = debug_to_load;
2231 current_target.to_lookup_symbol = debug_to_lookup_symbol;
2232 current_target.to_create_inferior = debug_to_create_inferior;
2233 current_target.to_post_startup_inferior = debug_to_post_startup_inferior;
2234 current_target.to_acknowledge_created_inferior = debug_to_acknowledge_created_inferior;
2235 current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint;
2236 current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint;
2237 current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint;
2238 current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint;
2239 current_target.to_follow_fork = debug_to_follow_fork;
2240 current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint;
2241 current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint;
2242 current_target.to_reported_exec_events_per_exec_call = debug_to_reported_exec_events_per_exec_call;
2243 current_target.to_has_exited = debug_to_has_exited;
2244 current_target.to_mourn_inferior = debug_to_mourn_inferior;
2245 current_target.to_can_run = debug_to_can_run;
2246 current_target.to_notice_signals = debug_to_notice_signals;
2247 current_target.to_thread_alive = debug_to_thread_alive;
2248 current_target.to_find_new_threads = debug_to_find_new_threads;
2249 current_target.to_stop = debug_to_stop;
2250 current_target.to_query = debug_to_query;
2251 current_target.to_rcmd = debug_to_rcmd;
2252 current_target.to_enable_exception_callback = debug_to_enable_exception_callback;
2253 current_target.to_get_current_exception_event = debug_to_get_current_exception_event;
2254 current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file;
2259 static char targ_desc[] =
2260 "Names of targets and files being debugged.\n\
2261 Shows the entire stack of targets currently in use (including the exec-file,\n\
2262 core-file, and process, if any), as well as the symbol file name.";
2265 do_monitor_command (char *cmd,
2268 if ((current_target.to_rcmd
2269 == (void (*) (char *, struct ui_file *)) tcomplain)
2270 || (current_target.to_rcmd == debug_to_rcmd
2271 && (debug_target.to_rcmd
2272 == (void (*) (char *, struct ui_file *)) tcomplain)))
2274 error ("\"monitor\" command not supported by this target.\n");
2276 target_rcmd (cmd, gdb_stdtarg);
2280 initialize_targets (void)
2282 init_dummy_target ();
2283 push_target (&dummy_target);
2285 add_info ("target", target_info, targ_desc);
2286 add_info ("files", target_info, targ_desc);
2289 (add_set_cmd ("target", class_maintenance, var_zinteger,
2290 (char *) &targetdebug,
2291 "Set target debugging.\n\
2292 When non-zero, target debugging is enabled.", &setdebuglist),
2295 add_setshow_boolean_cmd ("trust-readonly-sections", class_support,
2297 Set mode for reading from readonly sections.\n\
2298 When this mode is on, memory reads from readonly sections (such as .text)\n\
2299 will be read from the object file instead of from the target. This will\n\
2300 result in significant performance improvement for remote targets.", "\
2301 Show mode for reading from readonly sections.\n",
2303 &setlist, &showlist);
2305 add_com ("monitor", class_obscure, do_monitor_command,
2306 "Send a command to the remote monitor (remote targets only).");
2308 target_dcache = dcache_init ();