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, char *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, char *myaddr, int len)
1010 if (target_xfer_partial_p ())
1011 return xfer_using_stratum (TARGET_OBJECT_MEMORY, NULL,
1012 memaddr, len, NULL, myaddr);
1014 return target_xfer_memory (memaddr, myaddr, len, 1);
1017 #ifndef target_stopped_data_address_p
1019 target_stopped_data_address_p (struct target_ops *target)
1021 if (target->to_stopped_data_address
1022 == (int (*) (struct target_ops *, CORE_ADDR *)) return_zero)
1024 if (target->to_stopped_data_address == debug_to_stopped_data_address
1025 && (debug_target.to_stopped_data_address
1026 == (int (*) (struct target_ops *, CORE_ADDR *)) return_zero))
1032 static int trust_readonly = 0;
1034 /* Move memory to or from the targets. The top target gets priority;
1035 if it cannot handle it, it is offered to the next one down, etc.
1037 Result is -1 on error, or the number of bytes transfered. */
1040 do_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
1041 struct mem_attrib *attrib)
1045 struct target_ops *t;
1047 /* Zero length requests are ok and require no work. */
1051 /* deprecated_xfer_memory is not guaranteed to set errno, even when
1055 if (!write && trust_readonly)
1057 struct section_table *secp;
1058 /* User-settable option, "trust-readonly-sections". If true,
1059 then memory from any SEC_READONLY bfd section may be read
1060 directly from the bfd file. */
1061 secp = target_section_by_addr (¤t_target, memaddr);
1063 && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section)
1065 return xfer_memory (memaddr, myaddr, len, 0, attrib, ¤t_target);
1068 /* The quick case is that the top target can handle the transfer. */
1069 res = current_target.deprecated_xfer_memory
1070 (memaddr, myaddr, len, write, attrib, ¤t_target);
1072 /* If res <= 0 then we call it again in the loop. Ah well. */
1075 for (t = target_stack; t != NULL; t = t->beneath)
1077 if (!t->to_has_memory)
1080 res = t->deprecated_xfer_memory (memaddr, myaddr, len, write, attrib, t);
1082 break; /* Handled all or part of xfer */
1083 if (t->to_has_all_memory)
1095 /* Perform a memory transfer. Iterate until the entire region has
1098 Result is 0 or errno value. */
1101 target_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write)
1105 struct mem_region *region;
1107 /* Zero length requests are ok and require no work. */
1115 region = lookup_mem_region(memaddr);
1116 if (memaddr + len < region->hi)
1119 reg_len = region->hi - memaddr;
1121 switch (region->attrib.mode)
1136 if (region->attrib.cache)
1137 res = dcache_xfer_memory (target_dcache, memaddr, myaddr,
1140 res = do_xfer_memory (memaddr, myaddr, reg_len, write,
1145 /* If this address is for nonexistent memory, read zeros
1146 if reading, or do nothing if writing. Return
1149 memset (myaddr, 0, len);
1163 return 0; /* We managed to cover it all somehow. */
1167 /* Perform a partial memory transfer.
1169 Result is -1 on error, or the number of bytes transfered. */
1172 target_xfer_memory_partial (CORE_ADDR memaddr, char *myaddr, int len,
1173 int write_p, int *err)
1177 struct mem_region *region;
1179 /* Zero length requests are ok and require no work. */
1186 region = lookup_mem_region(memaddr);
1187 if (memaddr + len < region->hi)
1190 reg_len = region->hi - memaddr;
1192 switch (region->attrib.mode)
1211 if (region->attrib.cache)
1212 res = dcache_xfer_memory (target_dcache, memaddr, myaddr,
1215 res = do_xfer_memory (memaddr, myaddr, reg_len, write_p,
1233 target_read_memory_partial (CORE_ADDR memaddr, char *buf, int len, int *err)
1235 if (target_xfer_partial_p ())
1236 return target_xfer_partial (target_stack, TARGET_OBJECT_MEMORY, NULL,
1237 buf, NULL, memaddr, len);
1239 return target_xfer_memory_partial (memaddr, buf, len, 0, err);
1243 target_write_memory_partial (CORE_ADDR memaddr, char *buf, int len, int *err)
1245 if (target_xfer_partial_p ())
1246 return target_xfer_partial (target_stack, TARGET_OBJECT_MEMORY, NULL,
1247 NULL, buf, memaddr, len);
1249 return target_xfer_memory_partial (memaddr, buf, len, 1, err);
1252 /* More generic transfers. */
1255 default_xfer_partial (struct target_ops *ops, enum target_object object,
1256 const char *annex, void *readbuf,
1257 const void *writebuf, ULONGEST offset, LONGEST len)
1259 if (object == TARGET_OBJECT_MEMORY
1260 && ops->deprecated_xfer_memory != NULL)
1261 /* If available, fall back to the target's
1262 "deprecated_xfer_memory" method. */
1266 if (writebuf != NULL)
1268 void *buffer = xmalloc (len);
1269 struct cleanup *cleanup = make_cleanup (xfree, buffer);
1270 memcpy (buffer, writebuf, len);
1271 xfered = ops->deprecated_xfer_memory (offset, buffer, len,
1272 1/*write*/, NULL, ops);
1273 do_cleanups (cleanup);
1275 if (readbuf != NULL)
1276 xfered = ops->deprecated_xfer_memory (offset, readbuf, len, 0/*read*/,
1280 else if (xfered == 0 && errno == 0)
1281 /* "deprecated_xfer_memory" uses 0, cross checked against
1282 ERRNO as one indication of an error. */
1287 else if (ops->beneath != NULL)
1288 return target_xfer_partial (ops->beneath, object, annex,
1289 readbuf, writebuf, offset, len);
1294 /* Target vector read/write partial wrapper functions.
1296 NOTE: cagney/2003-10-21: I wonder if having "to_xfer_partial
1297 (inbuf, outbuf)", instead of separate read/write methods, make life
1301 target_read_partial (struct target_ops *ops,
1302 enum target_object object,
1303 const char *annex, void *buf,
1304 ULONGEST offset, LONGEST len)
1306 return target_xfer_partial (ops, object, annex, buf, NULL, offset, len);
1310 target_write_partial (struct target_ops *ops,
1311 enum target_object object,
1312 const char *annex, const void *buf,
1313 ULONGEST offset, LONGEST len)
1315 return target_xfer_partial (ops, object, annex, NULL, buf, offset, len);
1318 /* Wrappers to perform the full transfer. */
1320 target_read (struct target_ops *ops,
1321 enum target_object object,
1322 const char *annex, void *buf,
1323 ULONGEST offset, LONGEST len)
1326 while (xfered < len)
1328 LONGEST xfer = target_read_partial (ops, object, annex,
1329 (bfd_byte *) buf + xfered,
1330 offset + xfered, len - xfered);
1331 /* Call an observer, notifying them of the xfer progress? */
1333 /* Call memory_error? */
1342 target_write (struct target_ops *ops,
1343 enum target_object object,
1344 const char *annex, const void *buf,
1345 ULONGEST offset, LONGEST len)
1348 while (xfered < len)
1350 LONGEST xfer = target_write_partial (ops, object, annex,
1351 (bfd_byte *) buf + xfered,
1352 offset + xfered, len - xfered);
1353 /* Call an observer, notifying them of the xfer progress? */
1355 /* Call memory_error? */
1363 /* Memory transfer methods. */
1366 get_target_memory (struct target_ops *ops, CORE_ADDR addr, void *buf,
1369 if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, buf, addr, len)
1371 memory_error (EIO, addr);
1375 get_target_memory_unsigned (struct target_ops *ops,
1376 CORE_ADDR addr, int len)
1378 char buf[sizeof (ULONGEST)];
1380 gdb_assert (len <= sizeof (buf));
1381 get_target_memory (ops, addr, buf, len);
1382 return extract_unsigned_integer (buf, len);
1386 target_info (char *args, int from_tty)
1388 struct target_ops *t;
1389 int has_all_mem = 0;
1391 if (symfile_objfile != NULL)
1392 printf_unfiltered ("Symbols from \"%s\".\n", symfile_objfile->name);
1394 for (t = target_stack; t != NULL; t = t->beneath)
1396 if (!t->to_has_memory)
1399 if ((int) (t->to_stratum) <= (int) dummy_stratum)
1402 printf_unfiltered ("\tWhile running this, GDB does not access memory from...\n");
1403 printf_unfiltered ("%s:\n", t->to_longname);
1404 (t->to_files_info) (t);
1405 has_all_mem = t->to_has_all_memory;
1409 /* This is to be called by the open routine before it does
1413 target_preopen (int from_tty)
1417 if (target_has_execution)
1420 || query ("A program is being debugged already. Kill it? "))
1423 error ("Program not killed.");
1426 /* Calling target_kill may remove the target from the stack. But if
1427 it doesn't (which seems like a win for UDI), remove it now. */
1429 if (target_has_execution)
1433 /* Detach a target after doing deferred register stores. */
1436 target_detach (char *args, int from_tty)
1438 (current_target.to_detach) (args, from_tty);
1442 target_disconnect (char *args, int from_tty)
1444 (current_target.to_disconnect) (args, from_tty);
1448 target_link (char *modname, CORE_ADDR *t_reloc)
1450 if (DEPRECATED_STREQ (current_target.to_shortname, "rombug"))
1452 (current_target.to_lookup_symbol) (modname, t_reloc);
1454 error ("Unable to link to %s and get relocation in rombug", modname);
1457 *t_reloc = (CORE_ADDR) -1;
1461 target_async_mask (int mask)
1463 int saved_async_masked_status = target_async_mask_value;
1464 target_async_mask_value = mask;
1465 return saved_async_masked_status;
1468 /* Look through the list of possible targets for a target that can
1469 execute a run or attach command without any other data. This is
1470 used to locate the default process stratum.
1472 Result is always valid (error() is called for errors). */
1474 static struct target_ops *
1475 find_default_run_target (char *do_mesg)
1477 struct target_ops **t;
1478 struct target_ops *runable = NULL;
1483 for (t = target_structs; t < target_structs + target_struct_size;
1486 if ((*t)->to_can_run && target_can_run (*t))
1494 error ("Don't know how to %s. Try \"help target\".", do_mesg);
1500 find_default_attach (char *args, int from_tty)
1502 struct target_ops *t;
1504 t = find_default_run_target ("attach");
1505 (t->to_attach) (args, from_tty);
1510 find_default_create_inferior (char *exec_file, char *allargs, char **env,
1513 struct target_ops *t;
1515 t = find_default_run_target ("run");
1516 (t->to_create_inferior) (exec_file, allargs, env, from_tty);
1521 default_region_size_ok_for_hw_watchpoint (int byte_count)
1523 return (byte_count <= TYPE_LENGTH (builtin_type_void_data_ptr));
1539 return_minus_one (void)
1545 * Resize the to_sections pointer. Also make sure that anyone that
1546 * was holding on to an old value of it gets updated.
1547 * Returns the old size.
1551 target_resize_to_sections (struct target_ops *target, int num_added)
1553 struct target_ops **t;
1554 struct section_table *old_value;
1557 old_value = target->to_sections;
1559 if (target->to_sections)
1561 old_count = target->to_sections_end - target->to_sections;
1562 target->to_sections = (struct section_table *)
1563 xrealloc ((char *) target->to_sections,
1564 (sizeof (struct section_table)) * (num_added + old_count));
1569 target->to_sections = (struct section_table *)
1570 xmalloc ((sizeof (struct section_table)) * num_added);
1572 target->to_sections_end = target->to_sections + (num_added + old_count);
1574 /* Check to see if anyone else was pointing to this structure.
1575 If old_value was null, then no one was. */
1579 for (t = target_structs; t < target_structs + target_struct_size;
1582 if ((*t)->to_sections == old_value)
1584 (*t)->to_sections = target->to_sections;
1585 (*t)->to_sections_end = target->to_sections_end;
1588 /* There is a flattened view of the target stack in current_target,
1589 so its to_sections pointer might also need updating. */
1590 if (current_target.to_sections == old_value)
1592 current_target.to_sections = target->to_sections;
1593 current_target.to_sections_end = target->to_sections_end;
1601 /* Remove all target sections taken from ABFD.
1603 Scan the current target stack for targets whose section tables
1604 refer to sections from BFD, and remove those sections. We use this
1605 when we notice that the inferior has unloaded a shared object, for
1608 remove_target_sections (bfd *abfd)
1610 struct target_ops **t;
1612 for (t = target_structs; t < target_structs + target_struct_size; t++)
1614 struct section_table *src, *dest;
1616 dest = (*t)->to_sections;
1617 for (src = (*t)->to_sections; src < (*t)->to_sections_end; src++)
1618 if (src->bfd != abfd)
1620 /* Keep this section. */
1621 if (dest < src) *dest = *src;
1625 /* If we've dropped any sections, resize the section table. */
1627 target_resize_to_sections (*t, dest - src);
1634 /* Find a single runnable target in the stack and return it. If for
1635 some reason there is more than one, return NULL. */
1638 find_run_target (void)
1640 struct target_ops **t;
1641 struct target_ops *runable = NULL;
1646 for (t = target_structs; t < target_structs + target_struct_size; ++t)
1648 if ((*t)->to_can_run && target_can_run (*t))
1655 return (count == 1 ? runable : NULL);
1658 /* Find a single core_stratum target in the list of targets and return it.
1659 If for some reason there is more than one, return NULL. */
1662 find_core_target (void)
1664 struct target_ops **t;
1665 struct target_ops *runable = NULL;
1670 for (t = target_structs; t < target_structs + target_struct_size;
1673 if ((*t)->to_stratum == core_stratum)
1680 return (count == 1 ? runable : NULL);
1684 * Find the next target down the stack from the specified target.
1688 find_target_beneath (struct target_ops *t)
1694 /* The inferior process has died. Long live the inferior! */
1697 generic_mourn_inferior (void)
1699 extern int show_breakpoint_hit_counts;
1701 inferior_ptid = null_ptid;
1703 breakpoint_init_inferior (inf_exited);
1704 registers_changed ();
1706 reopen_exec_file ();
1707 reinit_frame_cache ();
1709 /* It is confusing to the user for ignore counts to stick around
1710 from previous runs of the inferior. So clear them. */
1711 /* However, it is more confusing for the ignore counts to disappear when
1712 using hit counts. So don't clear them if we're counting hits. */
1713 if (!show_breakpoint_hit_counts)
1714 breakpoint_clear_ignore_counts ();
1716 if (deprecated_detach_hook)
1717 deprecated_detach_hook ();
1720 /* Helper function for child_wait and the Lynx derivatives of child_wait.
1721 HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
1722 translation of that in OURSTATUS. */
1724 store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus)
1726 #ifdef CHILD_SPECIAL_WAITSTATUS
1727 /* CHILD_SPECIAL_WAITSTATUS should return nonzero and set *OURSTATUS
1728 if it wants to deal with hoststatus. */
1729 if (CHILD_SPECIAL_WAITSTATUS (ourstatus, hoststatus))
1733 if (WIFEXITED (hoststatus))
1735 ourstatus->kind = TARGET_WAITKIND_EXITED;
1736 ourstatus->value.integer = WEXITSTATUS (hoststatus);
1738 else if (!WIFSTOPPED (hoststatus))
1740 ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
1741 ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus));
1745 ourstatus->kind = TARGET_WAITKIND_STOPPED;
1746 ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus));
1750 /* Returns zero to leave the inferior alone, one to interrupt it. */
1751 int (*target_activity_function) (void);
1752 int target_activity_fd;
1754 /* Convert a normal process ID to a string. Returns the string in a static
1758 normal_pid_to_str (ptid_t ptid)
1760 static char buf[30];
1762 sprintf (buf, "process %d", PIDGET (ptid));
1766 /* Error-catcher for target_find_memory_regions */
1767 static int dummy_find_memory_regions (int (*ignore1) (), void *ignore2)
1769 error ("No target.");
1773 /* Error-catcher for target_make_corefile_notes */
1774 static char * dummy_make_corefile_notes (bfd *ignore1, int *ignore2)
1776 error ("No target.");
1780 /* Set up the handful of non-empty slots needed by the dummy target
1784 init_dummy_target (void)
1786 dummy_target.to_shortname = "None";
1787 dummy_target.to_longname = "None";
1788 dummy_target.to_doc = "";
1789 dummy_target.to_attach = find_default_attach;
1790 dummy_target.to_create_inferior = find_default_create_inferior;
1791 dummy_target.to_pid_to_str = normal_pid_to_str;
1792 dummy_target.to_stratum = dummy_stratum;
1793 dummy_target.to_find_memory_regions = dummy_find_memory_regions;
1794 dummy_target.to_make_corefile_notes = dummy_make_corefile_notes;
1795 dummy_target.to_xfer_partial = default_xfer_partial;
1796 dummy_target.to_magic = OPS_MAGIC;
1800 debug_to_open (char *args, int from_tty)
1802 debug_target.to_open (args, from_tty);
1804 fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty);
1808 debug_to_close (int quitting)
1810 target_close (&debug_target, quitting);
1811 fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting);
1815 target_close (struct target_ops *targ, int quitting)
1817 if (targ->to_xclose != NULL)
1818 targ->to_xclose (targ, quitting);
1819 else if (targ->to_close != NULL)
1820 targ->to_close (quitting);
1824 debug_to_attach (char *args, int from_tty)
1826 debug_target.to_attach (args, from_tty);
1828 fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", args, from_tty);
1833 debug_to_post_attach (int pid)
1835 debug_target.to_post_attach (pid);
1837 fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid);
1841 debug_to_detach (char *args, int from_tty)
1843 debug_target.to_detach (args, from_tty);
1845 fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", args, from_tty);
1849 debug_to_disconnect (char *args, int from_tty)
1851 debug_target.to_disconnect (args, from_tty);
1853 fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n",
1858 debug_to_resume (ptid_t ptid, int step, enum target_signal siggnal)
1860 debug_target.to_resume (ptid, step, siggnal);
1862 fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", PIDGET (ptid),
1863 step ? "step" : "continue",
1864 target_signal_to_name (siggnal));
1868 debug_to_wait (ptid_t ptid, struct target_waitstatus *status)
1872 retval = debug_target.to_wait (ptid, status);
1874 fprintf_unfiltered (gdb_stdlog,
1875 "target_wait (%d, status) = %d, ", PIDGET (ptid),
1877 fprintf_unfiltered (gdb_stdlog, "status->kind = ");
1878 switch (status->kind)
1880 case TARGET_WAITKIND_EXITED:
1881 fprintf_unfiltered (gdb_stdlog, "exited, status = %d\n",
1882 status->value.integer);
1884 case TARGET_WAITKIND_STOPPED:
1885 fprintf_unfiltered (gdb_stdlog, "stopped, signal = %s\n",
1886 target_signal_to_name (status->value.sig));
1888 case TARGET_WAITKIND_SIGNALLED:
1889 fprintf_unfiltered (gdb_stdlog, "signalled, signal = %s\n",
1890 target_signal_to_name (status->value.sig));
1892 case TARGET_WAITKIND_LOADED:
1893 fprintf_unfiltered (gdb_stdlog, "loaded\n");
1895 case TARGET_WAITKIND_FORKED:
1896 fprintf_unfiltered (gdb_stdlog, "forked\n");
1898 case TARGET_WAITKIND_VFORKED:
1899 fprintf_unfiltered (gdb_stdlog, "vforked\n");
1901 case TARGET_WAITKIND_EXECD:
1902 fprintf_unfiltered (gdb_stdlog, "execd\n");
1904 case TARGET_WAITKIND_SPURIOUS:
1905 fprintf_unfiltered (gdb_stdlog, "spurious\n");
1908 fprintf_unfiltered (gdb_stdlog, "unknown???\n");
1916 debug_print_register (const char * func, int regno)
1918 fprintf_unfiltered (gdb_stdlog, "%s ", func);
1919 if (regno >= 0 && regno < NUM_REGS + NUM_PSEUDO_REGS
1920 && REGISTER_NAME (regno) != NULL && REGISTER_NAME (regno)[0] != '\0')
1921 fprintf_unfiltered (gdb_stdlog, "(%s)", REGISTER_NAME (regno));
1923 fprintf_unfiltered (gdb_stdlog, "(%d)", regno);
1927 unsigned char buf[MAX_REGISTER_SIZE];
1928 deprecated_read_register_gen (regno, buf);
1929 fprintf_unfiltered (gdb_stdlog, " = ");
1930 for (i = 0; i < register_size (current_gdbarch, regno); i++)
1932 fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]);
1934 if (register_size (current_gdbarch, regno) <= sizeof (LONGEST))
1936 fprintf_unfiltered (gdb_stdlog, " 0x%s %s",
1937 paddr_nz (read_register (regno)),
1938 paddr_d (read_register (regno)));
1941 fprintf_unfiltered (gdb_stdlog, "\n");
1945 debug_to_fetch_registers (int regno)
1947 debug_target.to_fetch_registers (regno);
1948 debug_print_register ("target_fetch_registers", regno);
1952 debug_to_store_registers (int regno)
1954 debug_target.to_store_registers (regno);
1955 debug_print_register ("target_store_registers", regno);
1956 fprintf_unfiltered (gdb_stdlog, "\n");
1960 debug_to_prepare_to_store (void)
1962 debug_target.to_prepare_to_store ();
1964 fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n");
1968 deprecated_debug_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
1969 int write, struct mem_attrib *attrib,
1970 struct target_ops *target)
1974 retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write,
1977 fprintf_unfiltered (gdb_stdlog,
1978 "target_xfer_memory (0x%x, xxx, %d, %s, xxx) = %d",
1979 (unsigned int) memaddr, /* possable truncate long long */
1980 len, write ? "write" : "read", retval);
1986 fputs_unfiltered (", bytes =", gdb_stdlog);
1987 for (i = 0; i < retval; i++)
1989 if ((((long) &(myaddr[i])) & 0xf) == 0)
1991 if (targetdebug < 2 && i > 0)
1993 fprintf_unfiltered (gdb_stdlog, " ...");
1996 fprintf_unfiltered (gdb_stdlog, "\n");
1999 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
2003 fputc_unfiltered ('\n', gdb_stdlog);
2009 debug_to_files_info (struct target_ops *target)
2011 debug_target.to_files_info (target);
2013 fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n");
2017 debug_to_insert_breakpoint (CORE_ADDR addr, char *save)
2021 retval = debug_target.to_insert_breakpoint (addr, save);
2023 fprintf_unfiltered (gdb_stdlog,
2024 "target_insert_breakpoint (0x%lx, xxx) = %ld\n",
2025 (unsigned long) addr,
2026 (unsigned long) retval);
2031 debug_to_remove_breakpoint (CORE_ADDR addr, char *save)
2035 retval = debug_target.to_remove_breakpoint (addr, save);
2037 fprintf_unfiltered (gdb_stdlog,
2038 "target_remove_breakpoint (0x%lx, xxx) = %ld\n",
2039 (unsigned long) addr,
2040 (unsigned long) retval);
2045 debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty)
2049 retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty);
2051 fprintf_unfiltered (gdb_stdlog,
2052 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
2053 (unsigned long) type,
2054 (unsigned long) cnt,
2055 (unsigned long) from_tty,
2056 (unsigned long) retval);
2061 debug_to_region_size_ok_for_hw_watchpoint (int byte_count)
2065 retval = debug_target.to_region_size_ok_for_hw_watchpoint (byte_count);
2067 fprintf_unfiltered (gdb_stdlog,
2068 "TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT (%ld) = 0x%lx\n",
2069 (unsigned long) byte_count,
2070 (unsigned long) retval);
2075 debug_to_stopped_by_watchpoint (void)
2079 retval = debug_target.to_stopped_by_watchpoint ();
2081 fprintf_unfiltered (gdb_stdlog,
2082 "STOPPED_BY_WATCHPOINT () = %ld\n",
2083 (unsigned long) retval);
2088 debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr)
2092 retval = debug_target.to_stopped_data_address (target, addr);
2094 fprintf_unfiltered (gdb_stdlog,
2095 "target_stopped_data_address ([0x%lx]) = %ld\n",
2096 (unsigned long)*addr,
2097 (unsigned long)retval);
2102 debug_to_insert_hw_breakpoint (CORE_ADDR addr, char *save)
2106 retval = debug_target.to_insert_hw_breakpoint (addr, save);
2108 fprintf_unfiltered (gdb_stdlog,
2109 "target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n",
2110 (unsigned long) addr,
2111 (unsigned long) retval);
2116 debug_to_remove_hw_breakpoint (CORE_ADDR addr, char *save)
2120 retval = debug_target.to_remove_hw_breakpoint (addr, save);
2122 fprintf_unfiltered (gdb_stdlog,
2123 "target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n",
2124 (unsigned long) addr,
2125 (unsigned long) retval);
2130 debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type)
2134 retval = debug_target.to_insert_watchpoint (addr, len, type);
2136 fprintf_unfiltered (gdb_stdlog,
2137 "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n",
2138 (unsigned long) addr, len, type, (unsigned long) retval);
2143 debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type)
2147 retval = debug_target.to_insert_watchpoint (addr, len, type);
2149 fprintf_unfiltered (gdb_stdlog,
2150 "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n",
2151 (unsigned long) addr, len, type, (unsigned long) retval);
2156 debug_to_terminal_init (void)
2158 debug_target.to_terminal_init ();
2160 fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n");
2164 debug_to_terminal_inferior (void)
2166 debug_target.to_terminal_inferior ();
2168 fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n");
2172 debug_to_terminal_ours_for_output (void)
2174 debug_target.to_terminal_ours_for_output ();
2176 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n");
2180 debug_to_terminal_ours (void)
2182 debug_target.to_terminal_ours ();
2184 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n");
2188 debug_to_terminal_save_ours (void)
2190 debug_target.to_terminal_save_ours ();
2192 fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n");
2196 debug_to_terminal_info (char *arg, int from_tty)
2198 debug_target.to_terminal_info (arg, from_tty);
2200 fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg,
2205 debug_to_kill (void)
2207 debug_target.to_kill ();
2209 fprintf_unfiltered (gdb_stdlog, "target_kill ()\n");
2213 debug_to_load (char *args, int from_tty)
2215 debug_target.to_load (args, from_tty);
2217 fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty);
2221 debug_to_lookup_symbol (char *name, CORE_ADDR *addrp)
2225 retval = debug_target.to_lookup_symbol (name, addrp);
2227 fprintf_unfiltered (gdb_stdlog, "target_lookup_symbol (%s, xxx)\n", name);
2233 debug_to_create_inferior (char *exec_file, char *args, char **env,
2236 debug_target.to_create_inferior (exec_file, args, env, from_tty);
2238 fprintf_unfiltered (gdb_stdlog, "target_create_inferior (%s, %s, xxx, %d)\n",
2239 exec_file, args, from_tty);
2243 debug_to_post_startup_inferior (ptid_t ptid)
2245 debug_target.to_post_startup_inferior (ptid);
2247 fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n",
2252 debug_to_acknowledge_created_inferior (int pid)
2254 debug_target.to_acknowledge_created_inferior (pid);
2256 fprintf_unfiltered (gdb_stdlog, "target_acknowledge_created_inferior (%d)\n",
2261 debug_to_insert_fork_catchpoint (int pid)
2265 retval = debug_target.to_insert_fork_catchpoint (pid);
2267 fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n",
2274 debug_to_remove_fork_catchpoint (int pid)
2278 retval = debug_target.to_remove_fork_catchpoint (pid);
2280 fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n",
2287 debug_to_insert_vfork_catchpoint (int pid)
2291 retval = debug_target.to_insert_vfork_catchpoint (pid);
2293 fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d)= %d\n",
2300 debug_to_remove_vfork_catchpoint (int pid)
2304 retval = debug_target.to_remove_vfork_catchpoint (pid);
2306 fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n",
2313 debug_to_follow_fork (int follow_child)
2315 int retval = debug_target.to_follow_fork (follow_child);
2317 fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n",
2318 follow_child, retval);
2324 debug_to_insert_exec_catchpoint (int pid)
2328 retval = debug_target.to_insert_exec_catchpoint (pid);
2330 fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n",
2337 debug_to_remove_exec_catchpoint (int pid)
2341 retval = debug_target.to_remove_exec_catchpoint (pid);
2343 fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n",
2350 debug_to_reported_exec_events_per_exec_call (void)
2352 int reported_exec_events;
2354 reported_exec_events = debug_target.to_reported_exec_events_per_exec_call ();
2356 fprintf_unfiltered (gdb_stdlog,
2357 "target_reported_exec_events_per_exec_call () = %d\n",
2358 reported_exec_events);
2360 return reported_exec_events;
2364 debug_to_has_exited (int pid, int wait_status, int *exit_status)
2368 has_exited = debug_target.to_has_exited (pid, wait_status, exit_status);
2370 fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n",
2371 pid, wait_status, *exit_status, has_exited);
2377 debug_to_mourn_inferior (void)
2379 debug_target.to_mourn_inferior ();
2381 fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n");
2385 debug_to_can_run (void)
2389 retval = debug_target.to_can_run ();
2391 fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval);
2397 debug_to_notice_signals (ptid_t ptid)
2399 debug_target.to_notice_signals (ptid);
2401 fprintf_unfiltered (gdb_stdlog, "target_notice_signals (%d)\n",
2406 debug_to_thread_alive (ptid_t ptid)
2410 retval = debug_target.to_thread_alive (ptid);
2412 fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n",
2413 PIDGET (ptid), retval);
2419 debug_to_find_new_threads (void)
2421 debug_target.to_find_new_threads ();
2423 fputs_unfiltered ("target_find_new_threads ()\n", gdb_stdlog);
2427 debug_to_stop (void)
2429 debug_target.to_stop ();
2431 fprintf_unfiltered (gdb_stdlog, "target_stop ()\n");
2435 debug_to_rcmd (char *command,
2436 struct ui_file *outbuf)
2438 debug_target.to_rcmd (command, outbuf);
2439 fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command);
2442 static struct symtab_and_line *
2443 debug_to_enable_exception_callback (enum exception_event_kind kind, int enable)
2445 struct symtab_and_line *result;
2446 result = debug_target.to_enable_exception_callback (kind, enable);
2447 fprintf_unfiltered (gdb_stdlog,
2448 "target get_exception_callback_sal (%d, %d)\n",
2453 static struct exception_event_record *
2454 debug_to_get_current_exception_event (void)
2456 struct exception_event_record *result;
2457 result = debug_target.to_get_current_exception_event ();
2458 fprintf_unfiltered (gdb_stdlog, "target get_current_exception_event ()\n");
2463 debug_to_pid_to_exec_file (int pid)
2467 exec_file = debug_target.to_pid_to_exec_file (pid);
2469 fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n",
2476 setup_target_debug (void)
2478 memcpy (&debug_target, ¤t_target, sizeof debug_target);
2480 current_target.to_open = debug_to_open;
2481 current_target.to_close = debug_to_close;
2482 current_target.to_attach = debug_to_attach;
2483 current_target.to_post_attach = debug_to_post_attach;
2484 current_target.to_detach = debug_to_detach;
2485 current_target.to_disconnect = debug_to_disconnect;
2486 current_target.to_resume = debug_to_resume;
2487 current_target.to_wait = debug_to_wait;
2488 current_target.to_fetch_registers = debug_to_fetch_registers;
2489 current_target.to_store_registers = debug_to_store_registers;
2490 current_target.to_prepare_to_store = debug_to_prepare_to_store;
2491 current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory;
2492 current_target.to_files_info = debug_to_files_info;
2493 current_target.to_insert_breakpoint = debug_to_insert_breakpoint;
2494 current_target.to_remove_breakpoint = debug_to_remove_breakpoint;
2495 current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint;
2496 current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint;
2497 current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint;
2498 current_target.to_insert_watchpoint = debug_to_insert_watchpoint;
2499 current_target.to_remove_watchpoint = debug_to_remove_watchpoint;
2500 current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint;
2501 current_target.to_stopped_data_address = debug_to_stopped_data_address;
2502 current_target.to_region_size_ok_for_hw_watchpoint = debug_to_region_size_ok_for_hw_watchpoint;
2503 current_target.to_terminal_init = debug_to_terminal_init;
2504 current_target.to_terminal_inferior = debug_to_terminal_inferior;
2505 current_target.to_terminal_ours_for_output = debug_to_terminal_ours_for_output;
2506 current_target.to_terminal_ours = debug_to_terminal_ours;
2507 current_target.to_terminal_save_ours = debug_to_terminal_save_ours;
2508 current_target.to_terminal_info = debug_to_terminal_info;
2509 current_target.to_kill = debug_to_kill;
2510 current_target.to_load = debug_to_load;
2511 current_target.to_lookup_symbol = debug_to_lookup_symbol;
2512 current_target.to_create_inferior = debug_to_create_inferior;
2513 current_target.to_post_startup_inferior = debug_to_post_startup_inferior;
2514 current_target.to_acknowledge_created_inferior = debug_to_acknowledge_created_inferior;
2515 current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint;
2516 current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint;
2517 current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint;
2518 current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint;
2519 current_target.to_follow_fork = debug_to_follow_fork;
2520 current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint;
2521 current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint;
2522 current_target.to_reported_exec_events_per_exec_call = debug_to_reported_exec_events_per_exec_call;
2523 current_target.to_has_exited = debug_to_has_exited;
2524 current_target.to_mourn_inferior = debug_to_mourn_inferior;
2525 current_target.to_can_run = debug_to_can_run;
2526 current_target.to_notice_signals = debug_to_notice_signals;
2527 current_target.to_thread_alive = debug_to_thread_alive;
2528 current_target.to_find_new_threads = debug_to_find_new_threads;
2529 current_target.to_stop = debug_to_stop;
2530 current_target.to_rcmd = debug_to_rcmd;
2531 current_target.to_enable_exception_callback = debug_to_enable_exception_callback;
2532 current_target.to_get_current_exception_event = debug_to_get_current_exception_event;
2533 current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file;
2538 static char targ_desc[] =
2539 "Names of targets and files being debugged.\n\
2540 Shows the entire stack of targets currently in use (including the exec-file,\n\
2541 core-file, and process, if any), as well as the symbol file name.";
2544 do_monitor_command (char *cmd,
2547 if ((current_target.to_rcmd
2548 == (void (*) (char *, struct ui_file *)) tcomplain)
2549 || (current_target.to_rcmd == debug_to_rcmd
2550 && (debug_target.to_rcmd
2551 == (void (*) (char *, struct ui_file *)) tcomplain)))
2553 error ("\"monitor\" command not supported by this target.\n");
2555 target_rcmd (cmd, gdb_stdtarg);
2559 initialize_targets (void)
2561 init_dummy_target ();
2562 push_target (&dummy_target);
2564 add_info ("target", target_info, targ_desc);
2565 add_info ("files", target_info, targ_desc);
2567 deprecated_add_show_from_set
2568 (add_set_cmd ("target", class_maintenance, var_zinteger,
2569 (char *) &targetdebug,
2570 "Set target debugging.\n\
2571 When non-zero, target debugging is enabled. Higher numbers are more\n\
2572 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
2573 command.", &setdebuglist),
2576 add_setshow_boolean_cmd ("trust-readonly-sections", class_support,
2578 Set mode for reading from readonly sections.", "\
2579 Show mode for reading from readonly sections.", "\
2580 When this mode is on, memory reads from readonly sections (such as .text)\n\
2581 will be read from the object file instead of from the target. This will\n\
2582 result in significant performance improvement for remote targets.", "\
2583 Mode for reading from readonly sections is %s.",
2585 &setlist, &showlist);
2587 add_com ("monitor", class_obscure, do_monitor_command,
2588 "Send a command to the remote monitor (remote targets only).");
2590 target_dcache = dcache_init ();