1 /* Select target systems and architectures at runtime for GDB.
3 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
4 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
6 Contributed by Cygnus Support.
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330,
23 Boston, MA 02111-1307, USA. */
27 #include "gdb_string.h"
39 #include "gdb_assert.h"
42 static void target_info (char *, int);
44 static void maybe_kill_then_attach (char *, int);
46 static void kill_or_be_killed (int);
48 static void default_terminal_info (char *, int);
50 static int default_region_size_ok_for_hw_watchpoint (int);
52 static int nosymbol (char *, CORE_ADDR *);
54 static void tcomplain (void);
56 static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *);
58 static int return_zero (void);
60 static int return_one (void);
62 static int return_minus_one (void);
64 void target_ignore (void);
66 static void target_command (char *, int);
68 static struct target_ops *find_default_run_target (char *);
70 static void nosupport_runtime (void);
72 static LONGEST default_xfer_partial (struct target_ops *ops,
73 enum target_object object,
74 const char *annex, void *readbuf,
76 ULONGEST offset, LONGEST len);
78 /* Transfer LEN bytes between target address MEMADDR and GDB address
79 MYADDR. Returns 0 for success, errno code for failure (which
80 includes partial transfers -- if you want a more useful response to
81 partial transfers, try either target_read_memory_partial or
82 target_write_memory_partial). */
84 static int target_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
87 static void init_dummy_target (void);
89 static struct target_ops debug_target;
91 static void debug_to_open (char *, int);
93 static void debug_to_close (int);
95 static void debug_to_attach (char *, int);
97 static void debug_to_detach (char *, int);
99 static void debug_to_disconnect (char *, int);
101 static void debug_to_resume (ptid_t, int, enum target_signal);
103 static ptid_t debug_to_wait (ptid_t, struct target_waitstatus *);
105 static void debug_to_fetch_registers (int);
107 static void debug_to_store_registers (int);
109 static void debug_to_prepare_to_store (void);
111 static int deprecated_debug_xfer_memory (CORE_ADDR, char *, int, int,
113 struct target_ops *);
115 static void debug_to_files_info (struct target_ops *);
117 static int debug_to_insert_breakpoint (CORE_ADDR, char *);
119 static int debug_to_remove_breakpoint (CORE_ADDR, char *);
121 static int debug_to_can_use_hw_breakpoint (int, int, int);
123 static int debug_to_insert_hw_breakpoint (CORE_ADDR, char *);
125 static int debug_to_remove_hw_breakpoint (CORE_ADDR, char *);
127 static int debug_to_insert_watchpoint (CORE_ADDR, int, int);
129 static int debug_to_remove_watchpoint (CORE_ADDR, int, int);
131 static int debug_to_stopped_by_watchpoint (void);
133 static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *);
135 static int debug_to_region_size_ok_for_hw_watchpoint (int);
137 static void debug_to_terminal_init (void);
139 static void debug_to_terminal_inferior (void);
141 static void debug_to_terminal_ours_for_output (void);
143 static void debug_to_terminal_save_ours (void);
145 static void debug_to_terminal_ours (void);
147 static void debug_to_terminal_info (char *, int);
149 static void debug_to_kill (void);
151 static void debug_to_load (char *, int);
153 static int debug_to_lookup_symbol (char *, CORE_ADDR *);
155 static void debug_to_mourn_inferior (void);
157 static int debug_to_can_run (void);
159 static void debug_to_notice_signals (ptid_t);
161 static int debug_to_thread_alive (ptid_t);
163 static void debug_to_stop (void);
165 /* NOTE: cagney/2004-09-29: Many targets reference this variable in
166 wierd and mysterious ways. Putting the variable here lets those
167 wierd and mysterious ways keep building while they are being
168 converted to the inferior inheritance structure. */
169 struct target_ops deprecated_child_ops;
171 /* Pointer to array of target architecture structures; the size of the
172 array; the current index into the array; the allocated size of the
174 struct target_ops **target_structs;
175 unsigned target_struct_size;
176 unsigned target_struct_index;
177 unsigned target_struct_allocsize;
178 #define DEFAULT_ALLOCSIZE 10
180 /* The initial current target, so that there is always a semi-valid
183 static struct target_ops dummy_target;
185 /* Top of target stack. */
187 static struct target_ops *target_stack;
189 /* The target structure we are currently using to talk to a process
190 or file or whatever "inferior" we have. */
192 struct target_ops current_target;
194 /* Command list for target. */
196 static struct cmd_list_element *targetlist = NULL;
198 /* Nonzero if we are debugging an attached outside process
199 rather than an inferior. */
203 /* Non-zero if we want to see trace of target level stuff. */
205 static int targetdebug = 0;
207 static void setup_target_debug (void);
209 DCACHE *target_dcache;
211 /* The user just typed 'target' without the name of a target. */
214 target_command (char *arg, int from_tty)
216 fputs_filtered ("Argument required (target name). Try `help target'\n",
220 /* Add a possible target architecture to the list. */
223 add_target (struct target_ops *t)
225 /* Provide default values for all "must have" methods. */
226 if (t->to_xfer_partial == NULL)
227 t->to_xfer_partial = default_xfer_partial;
231 target_struct_allocsize = DEFAULT_ALLOCSIZE;
232 target_structs = (struct target_ops **) xmalloc
233 (target_struct_allocsize * sizeof (*target_structs));
235 if (target_struct_size >= target_struct_allocsize)
237 target_struct_allocsize *= 2;
238 target_structs = (struct target_ops **)
239 xrealloc ((char *) target_structs,
240 target_struct_allocsize * sizeof (*target_structs));
242 target_structs[target_struct_size++] = t;
244 if (targetlist == NULL)
245 add_prefix_cmd ("target", class_run, target_command,
246 "Connect to a target machine or process.\n\
247 The first argument is the type or protocol of the target machine.\n\
248 Remaining arguments are interpreted by the target protocol. For more\n\
249 information on the arguments for a particular protocol, type\n\
250 `help target ' followed by the protocol name.",
251 &targetlist, "target ", 0, &cmdlist);
252 add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist);
263 target_load (char *arg, int from_tty)
265 dcache_invalidate (target_dcache);
266 (*current_target.to_load) (arg, from_tty);
270 nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write,
271 struct target_ops *t)
273 errno = EIO; /* Can't read/write this location */
274 return 0; /* No bytes handled */
280 error (_("You can't do that when your target is `%s'"),
281 current_target.to_shortname);
287 error (_("You can't do that without a process to debug."));
291 nosymbol (char *name, CORE_ADDR *addrp)
293 return 1; /* Symbol does not exist in target env */
297 nosupport_runtime (void)
299 if (ptid_equal (inferior_ptid, null_ptid))
302 error (_("No run-time support for this"));
307 default_terminal_info (char *args, int from_tty)
309 printf_unfiltered (_("No saved terminal information.\n"));
312 /* This is the default target_create_inferior and target_attach function.
313 If the current target is executing, it asks whether to kill it off.
314 If this function returns without calling error(), it has killed off
315 the target, and the operation should be attempted. */
318 kill_or_be_killed (int from_tty)
320 if (target_has_execution)
322 printf_unfiltered (_("You are already running a program:\n"));
323 target_files_info ();
324 if (query ("Kill it? "))
327 if (target_has_execution)
328 error (_("Killing the program did not help."));
333 error (_("Program not killed."));
340 maybe_kill_then_attach (char *args, int from_tty)
342 kill_or_be_killed (from_tty);
343 target_attach (args, from_tty);
347 maybe_kill_then_create_inferior (char *exec, char *args, char **env,
350 kill_or_be_killed (0);
351 target_create_inferior (exec, args, env, from_tty);
354 /* Go through the target stack from top to bottom, copying over zero
355 entries in current_target, then filling in still empty entries. In
356 effect, we are doing class inheritance through the pushed target
359 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
360 is currently implemented, is that it discards any knowledge of
361 which target an inherited method originally belonged to.
362 Consequently, new new target methods should instead explicitly and
363 locally search the target stack for the target that can handle the
367 update_current_target (void)
369 struct target_ops *t;
371 /* First, reset curren'ts contents. */
372 memset (¤t_target, 0, sizeof (current_target));
374 #define INHERIT(FIELD, TARGET) \
375 if (!current_target.FIELD) \
376 current_target.FIELD = (TARGET)->FIELD
378 for (t = target_stack; t; t = t->beneath)
380 INHERIT (to_shortname, t);
381 INHERIT (to_longname, t);
383 INHERIT (to_open, t);
384 INHERIT (to_close, t);
385 INHERIT (to_attach, t);
386 INHERIT (to_post_attach, t);
387 INHERIT (to_detach, t);
388 INHERIT (to_disconnect, t);
389 INHERIT (to_resume, t);
390 INHERIT (to_wait, t);
391 INHERIT (to_fetch_registers, t);
392 INHERIT (to_store_registers, t);
393 INHERIT (to_prepare_to_store, t);
394 INHERIT (deprecated_xfer_memory, t);
395 INHERIT (to_files_info, t);
396 INHERIT (to_insert_breakpoint, t);
397 INHERIT (to_remove_breakpoint, t);
398 INHERIT (to_can_use_hw_breakpoint, t);
399 INHERIT (to_insert_hw_breakpoint, t);
400 INHERIT (to_remove_hw_breakpoint, t);
401 INHERIT (to_insert_watchpoint, t);
402 INHERIT (to_remove_watchpoint, t);
403 INHERIT (to_stopped_data_address, t);
404 INHERIT (to_stopped_by_watchpoint, t);
405 INHERIT (to_have_continuable_watchpoint, t);
406 INHERIT (to_region_size_ok_for_hw_watchpoint, t);
407 INHERIT (to_terminal_init, t);
408 INHERIT (to_terminal_inferior, t);
409 INHERIT (to_terminal_ours_for_output, t);
410 INHERIT (to_terminal_ours, t);
411 INHERIT (to_terminal_save_ours, t);
412 INHERIT (to_terminal_info, t);
413 INHERIT (to_kill, t);
414 INHERIT (to_load, t);
415 INHERIT (to_lookup_symbol, t);
416 INHERIT (to_create_inferior, t);
417 INHERIT (to_post_startup_inferior, t);
418 INHERIT (to_acknowledge_created_inferior, t);
419 INHERIT (to_insert_fork_catchpoint, t);
420 INHERIT (to_remove_fork_catchpoint, t);
421 INHERIT (to_insert_vfork_catchpoint, t);
422 INHERIT (to_remove_vfork_catchpoint, t);
423 INHERIT (to_follow_fork, t);
424 INHERIT (to_insert_exec_catchpoint, t);
425 INHERIT (to_remove_exec_catchpoint, t);
426 INHERIT (to_reported_exec_events_per_exec_call, t);
427 INHERIT (to_has_exited, t);
428 INHERIT (to_mourn_inferior, t);
429 INHERIT (to_can_run, t);
430 INHERIT (to_notice_signals, t);
431 INHERIT (to_thread_alive, t);
432 INHERIT (to_find_new_threads, t);
433 INHERIT (to_pid_to_str, t);
434 INHERIT (to_extra_thread_info, t);
435 INHERIT (to_stop, t);
436 /* Do not inherit to_xfer_partial. */
437 INHERIT (to_rcmd, t);
438 INHERIT (to_enable_exception_callback, t);
439 INHERIT (to_get_current_exception_event, t);
440 INHERIT (to_pid_to_exec_file, t);
441 INHERIT (to_stratum, t);
442 INHERIT (to_has_all_memory, t);
443 INHERIT (to_has_memory, t);
444 INHERIT (to_has_stack, t);
445 INHERIT (to_has_registers, t);
446 INHERIT (to_has_execution, t);
447 INHERIT (to_has_thread_control, t);
448 INHERIT (to_sections, t);
449 INHERIT (to_sections_end, t);
450 INHERIT (to_can_async_p, t);
451 INHERIT (to_is_async_p, t);
452 INHERIT (to_async, t);
453 INHERIT (to_async_mask_value, t);
454 INHERIT (to_find_memory_regions, t);
455 INHERIT (to_make_corefile_notes, t);
456 INHERIT (to_get_thread_local_address, t);
457 INHERIT (to_magic, t);
461 /* Clean up a target struct so it no longer has any zero pointers in
462 it. Some entries are defaulted to a method that print an error,
463 others are hard-wired to a standard recursive default. */
465 #define de_fault(field, value) \
466 if (!current_target.field) \
467 current_target.field = value
470 (void (*) (char *, int))
476 maybe_kill_then_attach);
477 de_fault (to_post_attach,
481 (void (*) (char *, int))
483 de_fault (to_disconnect,
484 (void (*) (char *, int))
487 (void (*) (ptid_t, int, enum target_signal))
490 (ptid_t (*) (ptid_t, struct target_waitstatus *))
492 de_fault (to_fetch_registers,
495 de_fault (to_store_registers,
498 de_fault (to_prepare_to_store,
501 de_fault (deprecated_xfer_memory,
502 (int (*) (CORE_ADDR, char *, int, int, struct mem_attrib *, struct target_ops *))
504 de_fault (to_files_info,
505 (void (*) (struct target_ops *))
507 de_fault (to_insert_breakpoint,
508 memory_insert_breakpoint);
509 de_fault (to_remove_breakpoint,
510 memory_remove_breakpoint);
511 de_fault (to_can_use_hw_breakpoint,
512 (int (*) (int, int, int))
514 de_fault (to_insert_hw_breakpoint,
515 (int (*) (CORE_ADDR, char *))
517 de_fault (to_remove_hw_breakpoint,
518 (int (*) (CORE_ADDR, char *))
520 de_fault (to_insert_watchpoint,
521 (int (*) (CORE_ADDR, int, int))
523 de_fault (to_remove_watchpoint,
524 (int (*) (CORE_ADDR, int, int))
526 de_fault (to_stopped_by_watchpoint,
529 de_fault (to_stopped_data_address,
530 (int (*) (struct target_ops *, CORE_ADDR *))
532 de_fault (to_region_size_ok_for_hw_watchpoint,
533 default_region_size_ok_for_hw_watchpoint);
534 de_fault (to_terminal_init,
537 de_fault (to_terminal_inferior,
540 de_fault (to_terminal_ours_for_output,
543 de_fault (to_terminal_ours,
546 de_fault (to_terminal_save_ours,
549 de_fault (to_terminal_info,
550 default_terminal_info);
555 (void (*) (char *, int))
557 de_fault (to_lookup_symbol,
558 (int (*) (char *, CORE_ADDR *))
560 de_fault (to_create_inferior,
561 maybe_kill_then_create_inferior);
562 de_fault (to_post_startup_inferior,
565 de_fault (to_acknowledge_created_inferior,
568 de_fault (to_insert_fork_catchpoint,
571 de_fault (to_remove_fork_catchpoint,
574 de_fault (to_insert_vfork_catchpoint,
577 de_fault (to_remove_vfork_catchpoint,
580 de_fault (to_follow_fork,
583 de_fault (to_insert_exec_catchpoint,
586 de_fault (to_remove_exec_catchpoint,
589 de_fault (to_reported_exec_events_per_exec_call,
592 de_fault (to_has_exited,
593 (int (*) (int, int, int *))
595 de_fault (to_mourn_inferior,
598 de_fault (to_can_run,
600 de_fault (to_notice_signals,
603 de_fault (to_thread_alive,
606 de_fault (to_find_new_threads,
609 de_fault (to_extra_thread_info,
610 (char *(*) (struct thread_info *))
615 current_target.to_xfer_partial = default_xfer_partial;
617 (void (*) (char *, struct ui_file *))
619 de_fault (to_enable_exception_callback,
620 (struct symtab_and_line * (*) (enum exception_event_kind, int))
622 de_fault (to_get_current_exception_event,
623 (struct exception_event_record * (*) (void))
625 de_fault (to_pid_to_exec_file,
628 de_fault (to_can_async_p,
631 de_fault (to_is_async_p,
635 (void (*) (void (*) (enum inferior_event_type, void*), void*))
639 /* Finally, position the target-stack beneath the squashed
640 "current_target". That way code looking for a non-inherited
641 target method can quickly and simply find it. */
642 current_target.beneath = target_stack;
645 /* Push a new target type into the stack of the existing target accessors,
646 possibly superseding some of the existing accessors.
648 Result is zero if the pushed target ended up on top of the stack,
649 nonzero if at least one target is on top of it.
651 Rather than allow an empty stack, we always have the dummy target at
652 the bottom stratum, so we can call the function vectors without
656 push_target (struct target_ops *t)
658 struct target_ops **cur;
660 /* Check magic number. If wrong, it probably means someone changed
661 the struct definition, but not all the places that initialize one. */
662 if (t->to_magic != OPS_MAGIC)
664 fprintf_unfiltered (gdb_stderr,
665 "Magic number of %s target struct wrong\n",
667 internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
670 /* Find the proper stratum to install this target in. */
671 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
673 if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum)
677 /* If there's already targets at this stratum, remove them. */
678 /* FIXME: cagney/2003-10-15: I think this should be poping all
679 targets to CUR, and not just those at this stratum level. */
680 while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum)
682 /* There's already something at this stratum level. Close it,
683 and un-hook it from the stack. */
684 struct target_ops *tmp = (*cur);
685 (*cur) = (*cur)->beneath;
687 target_close (tmp, 0);
690 /* We have removed all targets in our stratum, now add the new one. */
694 update_current_target ();
697 setup_target_debug ();
700 return (t != target_stack);
703 /* Remove a target_ops vector from the stack, wherever it may be.
704 Return how many times it was removed (0 or 1). */
707 unpush_target (struct target_ops *t)
709 struct target_ops **cur;
710 struct target_ops *tmp;
712 /* Look for the specified target. Note that we assume that a target
713 can only occur once in the target stack. */
715 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
722 return 0; /* Didn't find target_ops, quit now */
724 /* NOTE: cagney/2003-12-06: In '94 the close call was made
725 unconditional by moving it to before the above check that the
726 target was in the target stack (something about "Change the way
727 pushing and popping of targets work to support target overlays
728 and inheritance"). This doesn't make much sense - only open
729 targets should be closed. */
732 /* Unchain the target */
734 (*cur) = (*cur)->beneath;
737 update_current_target ();
745 target_close (¤t_target, 0); /* Let it clean up */
746 if (unpush_target (target_stack) == 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_read_memory (memaddr & ~3, buf, 4);
790 /* The transfer request might have crossed the boundary to an
791 unallocated region of memory. Retry the transfer, requesting
795 errcode = target_read_memory (memaddr, buf, 1);
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 /* Find a section containing ADDR. */
832 struct section_table *
833 target_section_by_addr (struct target_ops *target, CORE_ADDR addr)
835 struct section_table *secp;
836 for (secp = target->to_sections;
837 secp < target->to_sections_end;
840 if (addr >= secp->addr && addr < secp->endaddr)
846 /* Return non-zero when the target vector has supplied an xfer_partial
847 method and it, rather than xfer_memory, should be used. */
849 target_xfer_partial_p (void)
851 return (target_stack != NULL
852 && target_stack->to_xfer_partial != default_xfer_partial);
856 target_xfer_partial (struct target_ops *ops,
857 enum target_object object, const char *annex,
858 void *readbuf, const void *writebuf,
859 ULONGEST offset, LONGEST len)
863 gdb_assert (ops->to_xfer_partial != NULL);
864 retval = ops->to_xfer_partial (ops, object, annex, readbuf, writebuf,
868 const unsigned char *myaddr = NULL;
870 fprintf_unfiltered (gdb_stdlog,
871 "%s:target_xfer_partial (%d, %s, 0x%lx, 0x%lx, 0x%s, %s) = %s",
874 (annex ? annex : "(null)"),
875 (long) readbuf, (long) writebuf,
876 paddr_nz (offset), paddr_d (len), paddr_d (retval));
882 if (retval > 0 && myaddr != NULL)
886 fputs_unfiltered (", bytes =", gdb_stdlog);
887 for (i = 0; i < retval; i++)
889 if ((((long) &(myaddr[i])) & 0xf) == 0)
891 if (targetdebug < 2 && i > 0)
893 fprintf_unfiltered (gdb_stdlog, " ...");
896 fprintf_unfiltered (gdb_stdlog, "\n");
899 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
903 fputc_unfiltered ('\n', gdb_stdlog);
908 /* Attempt a transfer all LEN bytes starting at OFFSET between the
909 inferior's KIND:ANNEX space and GDB's READBUF/WRITEBUF buffer. If
910 the transfer succeeds, return zero, otherwize the host ERRNO is
913 The inferior is formed from several layers. In the case of
914 corefiles, inf-corefile is layered above inf-exec and a request for
915 text (corefiles do not include text pages) will be first sent to
916 the core-stratum, fail, and then sent to the object-file where it
919 NOTE: cagney/2004-09-30:
921 The old code tried to use four separate mechanisms for mapping an
922 object:offset:len tuple onto an inferior and its address space: the
923 target stack; the inferior's TO_SECTIONS; solib's SO_LIST;
928 The code below is instead using a single mechanism (currently
929 strata). If that mechanism proves insufficient then re-factor it
930 implementing another singluar mechanism (for instance, a generic
931 object:annex onto inferior:object:annex say). */
934 xfer_using_stratum (enum target_object object, const char *annex,
935 ULONGEST offset, LONGEST len, void *readbuf,
936 const void *writebuf)
939 struct target_ops *target;
941 /* Always successful. */
944 /* Never successful. */
945 if (target_stack == NULL)
948 target = target_stack;
951 xfered = target_xfer_partial (target, object, annex,
952 readbuf, writebuf, offset, len);
955 /* The partial xfer succeeded, update the counts, check that
956 the xfer hasn't finished and if it hasn't set things up
957 for the next round. */
963 readbuf = (bfd_byte *) readbuf + xfered;
964 if (writebuf != NULL)
965 writebuf = (bfd_byte *) writebuf + xfered;
966 target = target_stack;
970 /* Something totally screwed up, abandon the attempt to
979 /* This "stratum" didn't work, try the next one down. */
980 target = target->beneath;
987 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
988 GDB's memory at MYADDR. Returns either 0 for success or an errno value
991 If an error occurs, no guarantee is made about the contents of the data at
992 MYADDR. In particular, the caller should not depend upon partial reads
993 filling the buffer with good data. There is no way for the caller to know
994 how much good data might have been transfered anyway. Callers that can
995 deal with partial reads should call target_read_memory_partial. */
998 target_read_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len)
1000 if (target_xfer_partial_p ())
1001 return xfer_using_stratum (TARGET_OBJECT_MEMORY, NULL,
1002 memaddr, len, myaddr, NULL);
1004 return target_xfer_memory (memaddr, myaddr, len, 0);
1008 target_write_memory (CORE_ADDR memaddr, const bfd_byte *myaddr, int len)
1010 bfd_byte *bytes = alloca (len);
1011 memcpy (bytes, myaddr, len);
1012 if (target_xfer_partial_p ())
1013 return xfer_using_stratum (TARGET_OBJECT_MEMORY, NULL,
1014 memaddr, len, NULL, bytes);
1016 return target_xfer_memory (memaddr, bytes, len, 1);
1019 #ifndef target_stopped_data_address_p
1021 target_stopped_data_address_p (struct target_ops *target)
1023 if (target->to_stopped_data_address
1024 == (int (*) (struct target_ops *, CORE_ADDR *)) return_zero)
1026 if (target->to_stopped_data_address == debug_to_stopped_data_address
1027 && (debug_target.to_stopped_data_address
1028 == (int (*) (struct target_ops *, CORE_ADDR *)) return_zero))
1034 static int trust_readonly = 0;
1036 /* Move memory to or from the targets. The top target gets priority;
1037 if it cannot handle it, it is offered to the next one down, etc.
1039 Result is -1 on error, or the number of bytes transfered. */
1042 do_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
1043 struct mem_attrib *attrib)
1047 struct target_ops *t;
1049 /* Zero length requests are ok and require no work. */
1053 /* deprecated_xfer_memory is not guaranteed to set errno, even when
1057 if (!write && trust_readonly)
1059 struct section_table *secp;
1060 /* User-settable option, "trust-readonly-sections". If true,
1061 then memory from any SEC_READONLY bfd section may be read
1062 directly from the bfd file. */
1063 secp = target_section_by_addr (¤t_target, memaddr);
1065 && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section)
1067 return xfer_memory (memaddr, myaddr, len, 0, attrib, ¤t_target);
1070 /* The quick case is that the top target can handle the transfer. */
1071 res = current_target.deprecated_xfer_memory
1072 (memaddr, myaddr, len, write, attrib, ¤t_target);
1074 /* If res <= 0 then we call it again in the loop. Ah well. */
1077 for (t = target_stack; t != NULL; t = t->beneath)
1079 if (!t->to_has_memory)
1082 res = t->deprecated_xfer_memory (memaddr, myaddr, len, write, attrib, t);
1084 break; /* Handled all or part of xfer */
1085 if (t->to_has_all_memory)
1097 /* Perform a memory transfer. Iterate until the entire region has
1100 Result is 0 or errno value. */
1103 target_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write)
1107 struct mem_region *region;
1109 /* Zero length requests are ok and require no work. */
1117 region = lookup_mem_region(memaddr);
1118 if (memaddr + len < region->hi)
1121 reg_len = region->hi - memaddr;
1123 switch (region->attrib.mode)
1138 if (region->attrib.cache)
1139 res = dcache_xfer_memory (target_dcache, memaddr, myaddr,
1142 res = do_xfer_memory (memaddr, myaddr, reg_len, write,
1147 /* If this address is for nonexistent memory, read zeros
1148 if reading, or do nothing if writing. Return
1151 memset (myaddr, 0, len);
1165 return 0; /* We managed to cover it all somehow. */
1169 /* Perform a partial memory transfer.
1171 Result is -1 on error, or the number of bytes transfered. */
1174 target_xfer_memory_partial (CORE_ADDR memaddr, char *myaddr, int len,
1175 int write_p, int *err)
1179 struct mem_region *region;
1181 /* Zero length requests are ok and require no work. */
1188 region = lookup_mem_region(memaddr);
1189 if (memaddr + len < region->hi)
1192 reg_len = region->hi - memaddr;
1194 switch (region->attrib.mode)
1213 if (region->attrib.cache)
1214 res = dcache_xfer_memory (target_dcache, memaddr, myaddr,
1217 res = do_xfer_memory (memaddr, myaddr, reg_len, write_p,
1235 target_read_memory_partial (CORE_ADDR memaddr, char *buf, int len, int *err)
1237 if (target_xfer_partial_p ())
1238 return target_xfer_partial (target_stack, TARGET_OBJECT_MEMORY, NULL,
1239 buf, NULL, memaddr, len);
1241 return target_xfer_memory_partial (memaddr, buf, len, 0, err);
1245 target_write_memory_partial (CORE_ADDR memaddr, char *buf, int len, int *err)
1247 if (target_xfer_partial_p ())
1248 return target_xfer_partial (target_stack, TARGET_OBJECT_MEMORY, NULL,
1249 NULL, buf, memaddr, len);
1251 return target_xfer_memory_partial (memaddr, buf, len, 1, err);
1254 /* More generic transfers. */
1257 default_xfer_partial (struct target_ops *ops, enum target_object object,
1258 const char *annex, void *readbuf,
1259 const void *writebuf, ULONGEST offset, LONGEST len)
1261 if (object == TARGET_OBJECT_MEMORY
1262 && ops->deprecated_xfer_memory != NULL)
1263 /* If available, fall back to the target's
1264 "deprecated_xfer_memory" method. */
1268 if (writebuf != NULL)
1270 void *buffer = xmalloc (len);
1271 struct cleanup *cleanup = make_cleanup (xfree, buffer);
1272 memcpy (buffer, writebuf, len);
1273 xfered = ops->deprecated_xfer_memory (offset, buffer, len,
1274 1/*write*/, NULL, ops);
1275 do_cleanups (cleanup);
1277 if (readbuf != NULL)
1278 xfered = ops->deprecated_xfer_memory (offset, readbuf, len, 0/*read*/,
1282 else if (xfered == 0 && errno == 0)
1283 /* "deprecated_xfer_memory" uses 0, cross checked against
1284 ERRNO as one indication of an error. */
1289 else if (ops->beneath != NULL)
1290 return target_xfer_partial (ops->beneath, object, annex,
1291 readbuf, writebuf, offset, len);
1296 /* Target vector read/write partial wrapper functions.
1298 NOTE: cagney/2003-10-21: I wonder if having "to_xfer_partial
1299 (inbuf, outbuf)", instead of separate read/write methods, make life
1303 target_read_partial (struct target_ops *ops,
1304 enum target_object object,
1305 const char *annex, void *buf,
1306 ULONGEST offset, LONGEST len)
1308 return target_xfer_partial (ops, object, annex, buf, NULL, offset, len);
1312 target_write_partial (struct target_ops *ops,
1313 enum target_object object,
1314 const char *annex, const void *buf,
1315 ULONGEST offset, LONGEST len)
1317 return target_xfer_partial (ops, object, annex, NULL, buf, offset, len);
1320 /* Wrappers to perform the full transfer. */
1322 target_read (struct target_ops *ops,
1323 enum target_object object,
1324 const char *annex, void *buf,
1325 ULONGEST offset, LONGEST len)
1328 while (xfered < len)
1330 LONGEST xfer = target_read_partial (ops, object, annex,
1331 (bfd_byte *) buf + xfered,
1332 offset + xfered, len - xfered);
1333 /* Call an observer, notifying them of the xfer progress? */
1335 /* Call memory_error? */
1344 target_write (struct target_ops *ops,
1345 enum target_object object,
1346 const char *annex, const void *buf,
1347 ULONGEST offset, LONGEST len)
1350 while (xfered < len)
1352 LONGEST xfer = target_write_partial (ops, object, annex,
1353 (bfd_byte *) buf + xfered,
1354 offset + xfered, len - xfered);
1355 /* Call an observer, notifying them of the xfer progress? */
1357 /* Call memory_error? */
1365 /* Memory transfer methods. */
1368 get_target_memory (struct target_ops *ops, CORE_ADDR addr, void *buf,
1371 if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, buf, addr, len)
1373 memory_error (EIO, addr);
1377 get_target_memory_unsigned (struct target_ops *ops,
1378 CORE_ADDR addr, int len)
1380 char buf[sizeof (ULONGEST)];
1382 gdb_assert (len <= sizeof (buf));
1383 get_target_memory (ops, addr, buf, len);
1384 return extract_unsigned_integer (buf, len);
1388 target_info (char *args, int from_tty)
1390 struct target_ops *t;
1391 int has_all_mem = 0;
1393 if (symfile_objfile != NULL)
1394 printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile->name);
1396 for (t = target_stack; t != NULL; t = t->beneath)
1398 if (!t->to_has_memory)
1401 if ((int) (t->to_stratum) <= (int) dummy_stratum)
1404 printf_unfiltered (_("\tWhile running this, GDB does not access memory from...\n"));
1405 printf_unfiltered ("%s:\n", t->to_longname);
1406 (t->to_files_info) (t);
1407 has_all_mem = t->to_has_all_memory;
1411 /* This is to be called by the open routine before it does
1415 target_preopen (int from_tty)
1419 if (target_has_execution)
1422 || query (_("A program is being debugged already. Kill it? ")))
1425 error (_("Program not killed."));
1428 /* Calling target_kill may remove the target from the stack. But if
1429 it doesn't (which seems like a win for UDI), remove it now. */
1431 if (target_has_execution)
1435 /* Detach a target after doing deferred register stores. */
1438 target_detach (char *args, int from_tty)
1440 (current_target.to_detach) (args, from_tty);
1444 target_disconnect (char *args, int from_tty)
1446 (current_target.to_disconnect) (args, from_tty);
1450 target_link (char *modname, CORE_ADDR *t_reloc)
1452 if (DEPRECATED_STREQ (current_target.to_shortname, "rombug"))
1454 (current_target.to_lookup_symbol) (modname, t_reloc);
1456 error (_("Unable to link to %s and get relocation in rombug"), modname);
1459 *t_reloc = (CORE_ADDR) -1;
1463 target_async_mask (int mask)
1465 int saved_async_masked_status = target_async_mask_value;
1466 target_async_mask_value = mask;
1467 return saved_async_masked_status;
1470 /* Look through the list of possible targets for a target that can
1471 execute a run or attach command without any other data. This is
1472 used to locate the default process stratum.
1474 Result is always valid (error() is called for errors). */
1476 static struct target_ops *
1477 find_default_run_target (char *do_mesg)
1479 struct target_ops **t;
1480 struct target_ops *runable = NULL;
1485 for (t = target_structs; t < target_structs + target_struct_size;
1488 if ((*t)->to_can_run && target_can_run (*t))
1496 error (_("Don't know how to %s. Try \"help target\"."), do_mesg);
1502 find_default_attach (char *args, int from_tty)
1504 struct target_ops *t;
1506 t = find_default_run_target ("attach");
1507 (t->to_attach) (args, from_tty);
1512 find_default_create_inferior (char *exec_file, char *allargs, char **env,
1515 struct target_ops *t;
1517 t = find_default_run_target ("run");
1518 (t->to_create_inferior) (exec_file, allargs, env, from_tty);
1523 default_region_size_ok_for_hw_watchpoint (int byte_count)
1525 return (byte_count <= TYPE_LENGTH (builtin_type_void_data_ptr));
1541 return_minus_one (void)
1547 * Resize the to_sections pointer. Also make sure that anyone that
1548 * was holding on to an old value of it gets updated.
1549 * Returns the old size.
1553 target_resize_to_sections (struct target_ops *target, int num_added)
1555 struct target_ops **t;
1556 struct section_table *old_value;
1559 old_value = target->to_sections;
1561 if (target->to_sections)
1563 old_count = target->to_sections_end - target->to_sections;
1564 target->to_sections = (struct section_table *)
1565 xrealloc ((char *) target->to_sections,
1566 (sizeof (struct section_table)) * (num_added + old_count));
1571 target->to_sections = (struct section_table *)
1572 xmalloc ((sizeof (struct section_table)) * num_added);
1574 target->to_sections_end = target->to_sections + (num_added + old_count);
1576 /* Check to see if anyone else was pointing to this structure.
1577 If old_value was null, then no one was. */
1581 for (t = target_structs; t < target_structs + target_struct_size;
1584 if ((*t)->to_sections == old_value)
1586 (*t)->to_sections = target->to_sections;
1587 (*t)->to_sections_end = target->to_sections_end;
1590 /* There is a flattened view of the target stack in current_target,
1591 so its to_sections pointer might also need updating. */
1592 if (current_target.to_sections == old_value)
1594 current_target.to_sections = target->to_sections;
1595 current_target.to_sections_end = target->to_sections_end;
1603 /* Remove all target sections taken from ABFD.
1605 Scan the current target stack for targets whose section tables
1606 refer to sections from BFD, and remove those sections. We use this
1607 when we notice that the inferior has unloaded a shared object, for
1610 remove_target_sections (bfd *abfd)
1612 struct target_ops **t;
1614 for (t = target_structs; t < target_structs + target_struct_size; t++)
1616 struct section_table *src, *dest;
1618 dest = (*t)->to_sections;
1619 for (src = (*t)->to_sections; src < (*t)->to_sections_end; src++)
1620 if (src->bfd != abfd)
1622 /* Keep this section. */
1623 if (dest < src) *dest = *src;
1627 /* If we've dropped any sections, resize the section table. */
1629 target_resize_to_sections (*t, dest - src);
1636 /* Find a single runnable target in the stack and return it. If for
1637 some reason there is more than one, return NULL. */
1640 find_run_target (void)
1642 struct target_ops **t;
1643 struct target_ops *runable = NULL;
1648 for (t = target_structs; t < target_structs + target_struct_size; ++t)
1650 if ((*t)->to_can_run && target_can_run (*t))
1657 return (count == 1 ? runable : NULL);
1660 /* Find a single core_stratum target in the list of targets and return it.
1661 If for some reason there is more than one, return NULL. */
1664 find_core_target (void)
1666 struct target_ops **t;
1667 struct target_ops *runable = NULL;
1672 for (t = target_structs; t < target_structs + target_struct_size;
1675 if ((*t)->to_stratum == core_stratum)
1682 return (count == 1 ? runable : NULL);
1686 * Find the next target down the stack from the specified target.
1690 find_target_beneath (struct target_ops *t)
1696 /* The inferior process has died. Long live the inferior! */
1699 generic_mourn_inferior (void)
1701 extern int show_breakpoint_hit_counts;
1703 inferior_ptid = null_ptid;
1705 breakpoint_init_inferior (inf_exited);
1706 registers_changed ();
1708 reopen_exec_file ();
1709 reinit_frame_cache ();
1711 /* It is confusing to the user for ignore counts to stick around
1712 from previous runs of the inferior. So clear them. */
1713 /* However, it is more confusing for the ignore counts to disappear when
1714 using hit counts. So don't clear them if we're counting hits. */
1715 if (!show_breakpoint_hit_counts)
1716 breakpoint_clear_ignore_counts ();
1718 if (deprecated_detach_hook)
1719 deprecated_detach_hook ();
1722 /* Helper function for child_wait and the Lynx derivatives of child_wait.
1723 HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
1724 translation of that in OURSTATUS. */
1726 store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus)
1728 #ifdef CHILD_SPECIAL_WAITSTATUS
1729 /* CHILD_SPECIAL_WAITSTATUS should return nonzero and set *OURSTATUS
1730 if it wants to deal with hoststatus. */
1731 if (CHILD_SPECIAL_WAITSTATUS (ourstatus, hoststatus))
1735 if (WIFEXITED (hoststatus))
1737 ourstatus->kind = TARGET_WAITKIND_EXITED;
1738 ourstatus->value.integer = WEXITSTATUS (hoststatus);
1740 else if (!WIFSTOPPED (hoststatus))
1742 ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
1743 ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus));
1747 ourstatus->kind = TARGET_WAITKIND_STOPPED;
1748 ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus));
1752 /* Returns zero to leave the inferior alone, one to interrupt it. */
1753 int (*target_activity_function) (void);
1754 int target_activity_fd;
1756 /* Convert a normal process ID to a string. Returns the string in a static
1760 normal_pid_to_str (ptid_t ptid)
1762 static char buf[30];
1764 sprintf (buf, "process %d", PIDGET (ptid));
1768 /* Error-catcher for target_find_memory_regions */
1769 static int dummy_find_memory_regions (int (*ignore1) (), void *ignore2)
1771 error (_("No target."));
1775 /* Error-catcher for target_make_corefile_notes */
1776 static char * dummy_make_corefile_notes (bfd *ignore1, int *ignore2)
1778 error (_("No target."));
1782 /* Set up the handful of non-empty slots needed by the dummy target
1786 init_dummy_target (void)
1788 dummy_target.to_shortname = "None";
1789 dummy_target.to_longname = "None";
1790 dummy_target.to_doc = "";
1791 dummy_target.to_attach = find_default_attach;
1792 dummy_target.to_create_inferior = find_default_create_inferior;
1793 dummy_target.to_pid_to_str = normal_pid_to_str;
1794 dummy_target.to_stratum = dummy_stratum;
1795 dummy_target.to_find_memory_regions = dummy_find_memory_regions;
1796 dummy_target.to_make_corefile_notes = dummy_make_corefile_notes;
1797 dummy_target.to_xfer_partial = default_xfer_partial;
1798 dummy_target.to_magic = OPS_MAGIC;
1802 debug_to_open (char *args, int from_tty)
1804 debug_target.to_open (args, from_tty);
1806 fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty);
1810 debug_to_close (int quitting)
1812 target_close (&debug_target, quitting);
1813 fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting);
1817 target_close (struct target_ops *targ, int quitting)
1819 if (targ->to_xclose != NULL)
1820 targ->to_xclose (targ, quitting);
1821 else if (targ->to_close != NULL)
1822 targ->to_close (quitting);
1826 debug_to_attach (char *args, int from_tty)
1828 debug_target.to_attach (args, from_tty);
1830 fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", args, from_tty);
1835 debug_to_post_attach (int pid)
1837 debug_target.to_post_attach (pid);
1839 fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid);
1843 debug_to_detach (char *args, int from_tty)
1845 debug_target.to_detach (args, from_tty);
1847 fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", args, from_tty);
1851 debug_to_disconnect (char *args, int from_tty)
1853 debug_target.to_disconnect (args, from_tty);
1855 fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n",
1860 debug_to_resume (ptid_t ptid, int step, enum target_signal siggnal)
1862 debug_target.to_resume (ptid, step, siggnal);
1864 fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", PIDGET (ptid),
1865 step ? "step" : "continue",
1866 target_signal_to_name (siggnal));
1870 debug_to_wait (ptid_t ptid, struct target_waitstatus *status)
1874 retval = debug_target.to_wait (ptid, status);
1876 fprintf_unfiltered (gdb_stdlog,
1877 "target_wait (%d, status) = %d, ", PIDGET (ptid),
1879 fprintf_unfiltered (gdb_stdlog, "status->kind = ");
1880 switch (status->kind)
1882 case TARGET_WAITKIND_EXITED:
1883 fprintf_unfiltered (gdb_stdlog, "exited, status = %d\n",
1884 status->value.integer);
1886 case TARGET_WAITKIND_STOPPED:
1887 fprintf_unfiltered (gdb_stdlog, "stopped, signal = %s\n",
1888 target_signal_to_name (status->value.sig));
1890 case TARGET_WAITKIND_SIGNALLED:
1891 fprintf_unfiltered (gdb_stdlog, "signalled, signal = %s\n",
1892 target_signal_to_name (status->value.sig));
1894 case TARGET_WAITKIND_LOADED:
1895 fprintf_unfiltered (gdb_stdlog, "loaded\n");
1897 case TARGET_WAITKIND_FORKED:
1898 fprintf_unfiltered (gdb_stdlog, "forked\n");
1900 case TARGET_WAITKIND_VFORKED:
1901 fprintf_unfiltered (gdb_stdlog, "vforked\n");
1903 case TARGET_WAITKIND_EXECD:
1904 fprintf_unfiltered (gdb_stdlog, "execd\n");
1906 case TARGET_WAITKIND_SPURIOUS:
1907 fprintf_unfiltered (gdb_stdlog, "spurious\n");
1910 fprintf_unfiltered (gdb_stdlog, "unknown???\n");
1918 debug_print_register (const char * func, int regno)
1920 fprintf_unfiltered (gdb_stdlog, "%s ", func);
1921 if (regno >= 0 && regno < NUM_REGS + NUM_PSEUDO_REGS
1922 && REGISTER_NAME (regno) != NULL && REGISTER_NAME (regno)[0] != '\0')
1923 fprintf_unfiltered (gdb_stdlog, "(%s)", REGISTER_NAME (regno));
1925 fprintf_unfiltered (gdb_stdlog, "(%d)", regno);
1929 unsigned char buf[MAX_REGISTER_SIZE];
1930 deprecated_read_register_gen (regno, buf);
1931 fprintf_unfiltered (gdb_stdlog, " = ");
1932 for (i = 0; i < register_size (current_gdbarch, regno); i++)
1934 fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]);
1936 if (register_size (current_gdbarch, regno) <= sizeof (LONGEST))
1938 fprintf_unfiltered (gdb_stdlog, " 0x%s %s",
1939 paddr_nz (read_register (regno)),
1940 paddr_d (read_register (regno)));
1943 fprintf_unfiltered (gdb_stdlog, "\n");
1947 debug_to_fetch_registers (int regno)
1949 debug_target.to_fetch_registers (regno);
1950 debug_print_register ("target_fetch_registers", regno);
1954 debug_to_store_registers (int regno)
1956 debug_target.to_store_registers (regno);
1957 debug_print_register ("target_store_registers", regno);
1958 fprintf_unfiltered (gdb_stdlog, "\n");
1962 debug_to_prepare_to_store (void)
1964 debug_target.to_prepare_to_store ();
1966 fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n");
1970 deprecated_debug_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
1971 int write, struct mem_attrib *attrib,
1972 struct target_ops *target)
1976 retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write,
1979 fprintf_unfiltered (gdb_stdlog,
1980 "target_xfer_memory (0x%x, xxx, %d, %s, xxx) = %d",
1981 (unsigned int) memaddr, /* possable truncate long long */
1982 len, write ? "write" : "read", retval);
1988 fputs_unfiltered (", bytes =", gdb_stdlog);
1989 for (i = 0; i < retval; i++)
1991 if ((((long) &(myaddr[i])) & 0xf) == 0)
1993 if (targetdebug < 2 && i > 0)
1995 fprintf_unfiltered (gdb_stdlog, " ...");
1998 fprintf_unfiltered (gdb_stdlog, "\n");
2001 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
2005 fputc_unfiltered ('\n', gdb_stdlog);
2011 debug_to_files_info (struct target_ops *target)
2013 debug_target.to_files_info (target);
2015 fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n");
2019 debug_to_insert_breakpoint (CORE_ADDR addr, char *save)
2023 retval = debug_target.to_insert_breakpoint (addr, save);
2025 fprintf_unfiltered (gdb_stdlog,
2026 "target_insert_breakpoint (0x%lx, xxx) = %ld\n",
2027 (unsigned long) addr,
2028 (unsigned long) retval);
2033 debug_to_remove_breakpoint (CORE_ADDR addr, char *save)
2037 retval = debug_target.to_remove_breakpoint (addr, save);
2039 fprintf_unfiltered (gdb_stdlog,
2040 "target_remove_breakpoint (0x%lx, xxx) = %ld\n",
2041 (unsigned long) addr,
2042 (unsigned long) retval);
2047 debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty)
2051 retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty);
2053 fprintf_unfiltered (gdb_stdlog,
2054 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
2055 (unsigned long) type,
2056 (unsigned long) cnt,
2057 (unsigned long) from_tty,
2058 (unsigned long) retval);
2063 debug_to_region_size_ok_for_hw_watchpoint (int byte_count)
2067 retval = debug_target.to_region_size_ok_for_hw_watchpoint (byte_count);
2069 fprintf_unfiltered (gdb_stdlog,
2070 "TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT (%ld) = 0x%lx\n",
2071 (unsigned long) byte_count,
2072 (unsigned long) retval);
2077 debug_to_stopped_by_watchpoint (void)
2081 retval = debug_target.to_stopped_by_watchpoint ();
2083 fprintf_unfiltered (gdb_stdlog,
2084 "STOPPED_BY_WATCHPOINT () = %ld\n",
2085 (unsigned long) retval);
2090 debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr)
2094 retval = debug_target.to_stopped_data_address (target, addr);
2096 fprintf_unfiltered (gdb_stdlog,
2097 "target_stopped_data_address ([0x%lx]) = %ld\n",
2098 (unsigned long)*addr,
2099 (unsigned long)retval);
2104 debug_to_insert_hw_breakpoint (CORE_ADDR addr, char *save)
2108 retval = debug_target.to_insert_hw_breakpoint (addr, save);
2110 fprintf_unfiltered (gdb_stdlog,
2111 "target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n",
2112 (unsigned long) addr,
2113 (unsigned long) retval);
2118 debug_to_remove_hw_breakpoint (CORE_ADDR addr, char *save)
2122 retval = debug_target.to_remove_hw_breakpoint (addr, save);
2124 fprintf_unfiltered (gdb_stdlog,
2125 "target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n",
2126 (unsigned long) addr,
2127 (unsigned long) retval);
2132 debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type)
2136 retval = debug_target.to_insert_watchpoint (addr, len, type);
2138 fprintf_unfiltered (gdb_stdlog,
2139 "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n",
2140 (unsigned long) addr, len, type, (unsigned long) retval);
2145 debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type)
2149 retval = debug_target.to_insert_watchpoint (addr, len, type);
2151 fprintf_unfiltered (gdb_stdlog,
2152 "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n",
2153 (unsigned long) addr, len, type, (unsigned long) retval);
2158 debug_to_terminal_init (void)
2160 debug_target.to_terminal_init ();
2162 fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n");
2166 debug_to_terminal_inferior (void)
2168 debug_target.to_terminal_inferior ();
2170 fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n");
2174 debug_to_terminal_ours_for_output (void)
2176 debug_target.to_terminal_ours_for_output ();
2178 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n");
2182 debug_to_terminal_ours (void)
2184 debug_target.to_terminal_ours ();
2186 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n");
2190 debug_to_terminal_save_ours (void)
2192 debug_target.to_terminal_save_ours ();
2194 fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n");
2198 debug_to_terminal_info (char *arg, int from_tty)
2200 debug_target.to_terminal_info (arg, from_tty);
2202 fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg,
2207 debug_to_kill (void)
2209 debug_target.to_kill ();
2211 fprintf_unfiltered (gdb_stdlog, "target_kill ()\n");
2215 debug_to_load (char *args, int from_tty)
2217 debug_target.to_load (args, from_tty);
2219 fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty);
2223 debug_to_lookup_symbol (char *name, CORE_ADDR *addrp)
2227 retval = debug_target.to_lookup_symbol (name, addrp);
2229 fprintf_unfiltered (gdb_stdlog, "target_lookup_symbol (%s, xxx)\n", name);
2235 debug_to_create_inferior (char *exec_file, char *args, char **env,
2238 debug_target.to_create_inferior (exec_file, args, env, from_tty);
2240 fprintf_unfiltered (gdb_stdlog, "target_create_inferior (%s, %s, xxx, %d)\n",
2241 exec_file, args, from_tty);
2245 debug_to_post_startup_inferior (ptid_t ptid)
2247 debug_target.to_post_startup_inferior (ptid);
2249 fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n",
2254 debug_to_acknowledge_created_inferior (int pid)
2256 debug_target.to_acknowledge_created_inferior (pid);
2258 fprintf_unfiltered (gdb_stdlog, "target_acknowledge_created_inferior (%d)\n",
2263 debug_to_insert_fork_catchpoint (int pid)
2265 debug_target.to_insert_fork_catchpoint (pid);
2267 fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d)\n",
2272 debug_to_remove_fork_catchpoint (int pid)
2276 retval = debug_target.to_remove_fork_catchpoint (pid);
2278 fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n",
2285 debug_to_insert_vfork_catchpoint (int pid)
2287 debug_target.to_insert_vfork_catchpoint (pid);
2289 fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d)\n",
2294 debug_to_remove_vfork_catchpoint (int pid)
2298 retval = debug_target.to_remove_vfork_catchpoint (pid);
2300 fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n",
2307 debug_to_follow_fork (int follow_child)
2309 int retval = debug_target.to_follow_fork (follow_child);
2311 fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n",
2312 follow_child, retval);
2318 debug_to_insert_exec_catchpoint (int pid)
2320 debug_target.to_insert_exec_catchpoint (pid);
2322 fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d)\n",
2327 debug_to_remove_exec_catchpoint (int pid)
2331 retval = debug_target.to_remove_exec_catchpoint (pid);
2333 fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n",
2340 debug_to_reported_exec_events_per_exec_call (void)
2342 int reported_exec_events;
2344 reported_exec_events = debug_target.to_reported_exec_events_per_exec_call ();
2346 fprintf_unfiltered (gdb_stdlog,
2347 "target_reported_exec_events_per_exec_call () = %d\n",
2348 reported_exec_events);
2350 return reported_exec_events;
2354 debug_to_has_exited (int pid, int wait_status, int *exit_status)
2358 has_exited = debug_target.to_has_exited (pid, wait_status, exit_status);
2360 fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n",
2361 pid, wait_status, *exit_status, has_exited);
2367 debug_to_mourn_inferior (void)
2369 debug_target.to_mourn_inferior ();
2371 fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n");
2375 debug_to_can_run (void)
2379 retval = debug_target.to_can_run ();
2381 fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval);
2387 debug_to_notice_signals (ptid_t ptid)
2389 debug_target.to_notice_signals (ptid);
2391 fprintf_unfiltered (gdb_stdlog, "target_notice_signals (%d)\n",
2396 debug_to_thread_alive (ptid_t ptid)
2400 retval = debug_target.to_thread_alive (ptid);
2402 fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n",
2403 PIDGET (ptid), retval);
2409 debug_to_find_new_threads (void)
2411 debug_target.to_find_new_threads ();
2413 fputs_unfiltered ("target_find_new_threads ()\n", gdb_stdlog);
2417 debug_to_stop (void)
2419 debug_target.to_stop ();
2421 fprintf_unfiltered (gdb_stdlog, "target_stop ()\n");
2425 debug_to_rcmd (char *command,
2426 struct ui_file *outbuf)
2428 debug_target.to_rcmd (command, outbuf);
2429 fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command);
2432 static struct symtab_and_line *
2433 debug_to_enable_exception_callback (enum exception_event_kind kind, int enable)
2435 struct symtab_and_line *result;
2436 result = debug_target.to_enable_exception_callback (kind, enable);
2437 fprintf_unfiltered (gdb_stdlog,
2438 "target get_exception_callback_sal (%d, %d)\n",
2443 static struct exception_event_record *
2444 debug_to_get_current_exception_event (void)
2446 struct exception_event_record *result;
2447 result = debug_target.to_get_current_exception_event ();
2448 fprintf_unfiltered (gdb_stdlog, "target get_current_exception_event ()\n");
2453 debug_to_pid_to_exec_file (int pid)
2457 exec_file = debug_target.to_pid_to_exec_file (pid);
2459 fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n",
2466 setup_target_debug (void)
2468 memcpy (&debug_target, ¤t_target, sizeof debug_target);
2470 current_target.to_open = debug_to_open;
2471 current_target.to_close = debug_to_close;
2472 current_target.to_attach = debug_to_attach;
2473 current_target.to_post_attach = debug_to_post_attach;
2474 current_target.to_detach = debug_to_detach;
2475 current_target.to_disconnect = debug_to_disconnect;
2476 current_target.to_resume = debug_to_resume;
2477 current_target.to_wait = debug_to_wait;
2478 current_target.to_fetch_registers = debug_to_fetch_registers;
2479 current_target.to_store_registers = debug_to_store_registers;
2480 current_target.to_prepare_to_store = debug_to_prepare_to_store;
2481 current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory;
2482 current_target.to_files_info = debug_to_files_info;
2483 current_target.to_insert_breakpoint = debug_to_insert_breakpoint;
2484 current_target.to_remove_breakpoint = debug_to_remove_breakpoint;
2485 current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint;
2486 current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint;
2487 current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint;
2488 current_target.to_insert_watchpoint = debug_to_insert_watchpoint;
2489 current_target.to_remove_watchpoint = debug_to_remove_watchpoint;
2490 current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint;
2491 current_target.to_stopped_data_address = debug_to_stopped_data_address;
2492 current_target.to_region_size_ok_for_hw_watchpoint = debug_to_region_size_ok_for_hw_watchpoint;
2493 current_target.to_terminal_init = debug_to_terminal_init;
2494 current_target.to_terminal_inferior = debug_to_terminal_inferior;
2495 current_target.to_terminal_ours_for_output = debug_to_terminal_ours_for_output;
2496 current_target.to_terminal_ours = debug_to_terminal_ours;
2497 current_target.to_terminal_save_ours = debug_to_terminal_save_ours;
2498 current_target.to_terminal_info = debug_to_terminal_info;
2499 current_target.to_kill = debug_to_kill;
2500 current_target.to_load = debug_to_load;
2501 current_target.to_lookup_symbol = debug_to_lookup_symbol;
2502 current_target.to_create_inferior = debug_to_create_inferior;
2503 current_target.to_post_startup_inferior = debug_to_post_startup_inferior;
2504 current_target.to_acknowledge_created_inferior = debug_to_acknowledge_created_inferior;
2505 current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint;
2506 current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint;
2507 current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint;
2508 current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint;
2509 current_target.to_follow_fork = debug_to_follow_fork;
2510 current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint;
2511 current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint;
2512 current_target.to_reported_exec_events_per_exec_call = debug_to_reported_exec_events_per_exec_call;
2513 current_target.to_has_exited = debug_to_has_exited;
2514 current_target.to_mourn_inferior = debug_to_mourn_inferior;
2515 current_target.to_can_run = debug_to_can_run;
2516 current_target.to_notice_signals = debug_to_notice_signals;
2517 current_target.to_thread_alive = debug_to_thread_alive;
2518 current_target.to_find_new_threads = debug_to_find_new_threads;
2519 current_target.to_stop = debug_to_stop;
2520 current_target.to_rcmd = debug_to_rcmd;
2521 current_target.to_enable_exception_callback = debug_to_enable_exception_callback;
2522 current_target.to_get_current_exception_event = debug_to_get_current_exception_event;
2523 current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file;
2528 static char targ_desc[] =
2529 "Names of targets and files being debugged.\n\
2530 Shows the entire stack of targets currently in use (including the exec-file,\n\
2531 core-file, and process, if any), as well as the symbol file name.";
2534 do_monitor_command (char *cmd,
2537 if ((current_target.to_rcmd
2538 == (void (*) (char *, struct ui_file *)) tcomplain)
2539 || (current_target.to_rcmd == debug_to_rcmd
2540 && (debug_target.to_rcmd
2541 == (void (*) (char *, struct ui_file *)) tcomplain)))
2542 error (_("\"monitor\" command not supported by this target."));
2543 target_rcmd (cmd, gdb_stdtarg);
2547 initialize_targets (void)
2549 init_dummy_target ();
2550 push_target (&dummy_target);
2552 add_info ("target", target_info, targ_desc);
2553 add_info ("files", target_info, targ_desc);
2555 deprecated_add_show_from_set
2556 (add_set_cmd ("target", class_maintenance, var_zinteger,
2557 (char *) &targetdebug,
2558 "Set target debugging.\n\
2559 When non-zero, target debugging is enabled. Higher numbers are more\n\
2560 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
2561 command.", &setdebuglist),
2564 add_setshow_boolean_cmd ("trust-readonly-sections", class_support,
2566 Set mode for reading from readonly sections.", "\
2567 Show mode for reading from readonly sections.", "\
2568 When this mode is on, memory reads from readonly sections (such as .text)\n\
2569 will be read from the object file instead of from the target. This will\n\
2570 result in significant performance improvement for remote targets.",
2571 NULL, /* PRINT: Mode for reading from readonly sections is %s. */
2573 &setlist, &showlist);
2575 add_com ("monitor", class_obscure, do_monitor_command,
2576 "Send a command to the remote monitor (remote targets only).");
2578 target_dcache = dcache_init ();