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 debug_to_xfer_memory (CORE_ADDR, char *, int, int,
112 struct mem_attrib *, struct target_ops *);
114 static void debug_to_files_info (struct target_ops *);
116 static int debug_to_insert_breakpoint (CORE_ADDR, char *);
118 static int debug_to_remove_breakpoint (CORE_ADDR, char *);
120 static int debug_to_can_use_hw_breakpoint (int, int, int);
122 static int debug_to_insert_hw_breakpoint (CORE_ADDR, char *);
124 static int debug_to_remove_hw_breakpoint (CORE_ADDR, char *);
126 static int debug_to_insert_watchpoint (CORE_ADDR, int, int);
128 static int debug_to_remove_watchpoint (CORE_ADDR, int, int);
130 static int debug_to_stopped_by_watchpoint (void);
132 static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *);
134 static int debug_to_region_size_ok_for_hw_watchpoint (int);
136 static void debug_to_terminal_init (void);
138 static void debug_to_terminal_inferior (void);
140 static void debug_to_terminal_ours_for_output (void);
142 static void debug_to_terminal_save_ours (void);
144 static void debug_to_terminal_ours (void);
146 static void debug_to_terminal_info (char *, int);
148 static void debug_to_kill (void);
150 static void debug_to_load (char *, int);
152 static int debug_to_lookup_symbol (char *, CORE_ADDR *);
154 static void debug_to_mourn_inferior (void);
156 static int debug_to_can_run (void);
158 static void debug_to_notice_signals (ptid_t);
160 static int debug_to_thread_alive (ptid_t);
162 static void debug_to_stop (void);
164 /* NOTE: cagney/2004-09-29: Many targets reference this variable in
165 wierd and mysterious ways. Putting the variable here lets those
166 wierd and mysterious ways keep building while they are being
167 converted to the inferior inheritance structure. */
168 struct target_ops deprecated_child_ops;
170 /* Pointer to array of target architecture structures; the size of the
171 array; the current index into the array; the allocated size of the
173 struct target_ops **target_structs;
174 unsigned target_struct_size;
175 unsigned target_struct_index;
176 unsigned target_struct_allocsize;
177 #define DEFAULT_ALLOCSIZE 10
179 /* The initial current target, so that there is always a semi-valid
182 static struct target_ops dummy_target;
184 /* Top of target stack. */
186 static struct target_ops *target_stack;
188 /* The target structure we are currently using to talk to a process
189 or file or whatever "inferior" we have. */
191 struct target_ops current_target;
193 /* Command list for target. */
195 static struct cmd_list_element *targetlist = NULL;
197 /* Nonzero if we are debugging an attached outside process
198 rather than an inferior. */
202 /* Non-zero if we want to see trace of target level stuff. */
204 static int targetdebug = 0;
206 static void setup_target_debug (void);
208 DCACHE *target_dcache;
210 /* The user just typed 'target' without the name of a target. */
213 target_command (char *arg, int from_tty)
215 fputs_filtered ("Argument required (target name). Try `help target'\n",
219 /* Add a possible target architecture to the list. */
222 add_target (struct target_ops *t)
224 /* Provide default values for all "must have" methods. */
225 if (t->to_xfer_partial == NULL)
226 t->to_xfer_partial = default_xfer_partial;
230 target_struct_allocsize = DEFAULT_ALLOCSIZE;
231 target_structs = (struct target_ops **) xmalloc
232 (target_struct_allocsize * sizeof (*target_structs));
234 if (target_struct_size >= target_struct_allocsize)
236 target_struct_allocsize *= 2;
237 target_structs = (struct target_ops **)
238 xrealloc ((char *) target_structs,
239 target_struct_allocsize * sizeof (*target_structs));
241 target_structs[target_struct_size++] = t;
243 if (targetlist == NULL)
244 add_prefix_cmd ("target", class_run, target_command,
245 "Connect to a target machine or process.\n\
246 The first argument is the type or protocol of the target machine.\n\
247 Remaining arguments are interpreted by the target protocol. For more\n\
248 information on the arguments for a particular protocol, type\n\
249 `help target ' followed by the protocol name.",
250 &targetlist, "target ", 0, &cmdlist);
251 add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist);
262 target_load (char *arg, int from_tty)
264 dcache_invalidate (target_dcache);
265 (*current_target.to_load) (arg, from_tty);
269 nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write,
270 struct target_ops *t)
272 errno = EIO; /* Can't read/write this location */
273 return 0; /* No bytes handled */
279 error ("You can't do that when your target is `%s'",
280 current_target.to_shortname);
286 error ("You can't do that without a process to debug.");
290 nosymbol (char *name, CORE_ADDR *addrp)
292 return 1; /* Symbol does not exist in target env */
296 nosupport_runtime (void)
298 if (ptid_equal (inferior_ptid, null_ptid))
301 error ("No run-time support for this");
306 default_terminal_info (char *args, int from_tty)
308 printf_unfiltered ("No saved terminal information.\n");
311 /* This is the default target_create_inferior and target_attach function.
312 If the current target is executing, it asks whether to kill it off.
313 If this function returns without calling error(), it has killed off
314 the target, and the operation should be attempted. */
317 kill_or_be_killed (int from_tty)
319 if (target_has_execution)
321 printf_unfiltered ("You are already running a program:\n");
322 target_files_info ();
323 if (query ("Kill it? "))
326 if (target_has_execution)
327 error ("Killing the program did not help.");
332 error ("Program not killed.");
339 maybe_kill_then_attach (char *args, int from_tty)
341 kill_or_be_killed (from_tty);
342 target_attach (args, from_tty);
346 maybe_kill_then_create_inferior (char *exec, char *args, char **env,
349 kill_or_be_killed (0);
350 target_create_inferior (exec, args, env, from_tty);
353 /* Go through the target stack from top to bottom, copying over zero
354 entries in current_target, then filling in still empty entries. In
355 effect, we are doing class inheritance through the pushed target
358 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
359 is currently implemented, is that it discards any knowledge of
360 which target an inherited method originally belonged to.
361 Consequently, new new target methods should instead explicitly and
362 locally search the target stack for the target that can handle the
366 update_current_target (void)
368 struct target_ops *t;
370 /* First, reset curren'ts contents. */
371 memset (¤t_target, 0, sizeof (current_target));
373 #define INHERIT(FIELD, TARGET) \
374 if (!current_target.FIELD) \
375 current_target.FIELD = (TARGET)->FIELD
377 for (t = target_stack; t; t = t->beneath)
379 INHERIT (to_shortname, t);
380 INHERIT (to_longname, t);
382 INHERIT (to_open, t);
383 INHERIT (to_close, t);
384 INHERIT (to_attach, t);
385 INHERIT (to_post_attach, t);
386 INHERIT (to_detach, t);
387 INHERIT (to_disconnect, t);
388 INHERIT (to_resume, t);
389 INHERIT (to_wait, t);
390 INHERIT (to_fetch_registers, t);
391 INHERIT (to_store_registers, t);
392 INHERIT (to_prepare_to_store, t);
393 INHERIT (to_xfer_memory, t);
394 INHERIT (to_files_info, t);
395 INHERIT (to_insert_breakpoint, t);
396 INHERIT (to_remove_breakpoint, t);
397 INHERIT (to_can_use_hw_breakpoint, t);
398 INHERIT (to_insert_hw_breakpoint, t);
399 INHERIT (to_remove_hw_breakpoint, t);
400 INHERIT (to_insert_watchpoint, t);
401 INHERIT (to_remove_watchpoint, t);
402 INHERIT (to_stopped_data_address, t);
403 INHERIT (to_stopped_by_watchpoint, t);
404 INHERIT (to_have_continuable_watchpoint, t);
405 INHERIT (to_region_size_ok_for_hw_watchpoint, t);
406 INHERIT (to_terminal_init, t);
407 INHERIT (to_terminal_inferior, t);
408 INHERIT (to_terminal_ours_for_output, t);
409 INHERIT (to_terminal_ours, t);
410 INHERIT (to_terminal_save_ours, t);
411 INHERIT (to_terminal_info, t);
412 INHERIT (to_kill, t);
413 INHERIT (to_load, t);
414 INHERIT (to_lookup_symbol, t);
415 INHERIT (to_create_inferior, t);
416 INHERIT (to_post_startup_inferior, t);
417 INHERIT (to_acknowledge_created_inferior, t);
418 INHERIT (to_insert_fork_catchpoint, t);
419 INHERIT (to_remove_fork_catchpoint, t);
420 INHERIT (to_insert_vfork_catchpoint, t);
421 INHERIT (to_remove_vfork_catchpoint, t);
422 INHERIT (to_follow_fork, t);
423 INHERIT (to_insert_exec_catchpoint, t);
424 INHERIT (to_remove_exec_catchpoint, t);
425 INHERIT (to_reported_exec_events_per_exec_call, t);
426 INHERIT (to_has_exited, t);
427 INHERIT (to_mourn_inferior, t);
428 INHERIT (to_can_run, t);
429 INHERIT (to_notice_signals, t);
430 INHERIT (to_thread_alive, t);
431 INHERIT (to_find_new_threads, t);
432 INHERIT (to_pid_to_str, t);
433 INHERIT (to_extra_thread_info, t);
434 INHERIT (to_stop, t);
435 /* Do not inherit to_xfer_partial. */
436 INHERIT (to_rcmd, t);
437 INHERIT (to_enable_exception_callback, t);
438 INHERIT (to_get_current_exception_event, t);
439 INHERIT (to_pid_to_exec_file, t);
440 INHERIT (to_stratum, t);
441 INHERIT (to_has_all_memory, t);
442 INHERIT (to_has_memory, t);
443 INHERIT (to_has_stack, t);
444 INHERIT (to_has_registers, t);
445 INHERIT (to_has_execution, t);
446 INHERIT (to_has_thread_control, t);
447 INHERIT (to_sections, t);
448 INHERIT (to_sections_end, t);
449 INHERIT (to_can_async_p, t);
450 INHERIT (to_is_async_p, t);
451 INHERIT (to_async, t);
452 INHERIT (to_async_mask_value, t);
453 INHERIT (to_find_memory_regions, t);
454 INHERIT (to_make_corefile_notes, t);
455 INHERIT (to_get_thread_local_address, t);
456 INHERIT (to_magic, t);
460 /* Clean up a target struct so it no longer has any zero pointers in
461 it. Some entries are defaulted to a method that print an error,
462 others are hard-wired to a standard recursive default. */
464 #define de_fault(field, value) \
465 if (!current_target.field) \
466 current_target.field = value
469 (void (*) (char *, int))
475 maybe_kill_then_attach);
476 de_fault (to_post_attach,
480 (void (*) (char *, int))
482 de_fault (to_disconnect,
483 (void (*) (char *, int))
486 (void (*) (ptid_t, int, enum target_signal))
489 (ptid_t (*) (ptid_t, struct target_waitstatus *))
491 de_fault (to_fetch_registers,
494 de_fault (to_store_registers,
497 de_fault (to_prepare_to_store,
500 de_fault (to_xfer_memory,
501 (int (*) (CORE_ADDR, char *, int, int, struct mem_attrib *, struct target_ops *))
503 de_fault (to_files_info,
504 (void (*) (struct target_ops *))
506 de_fault (to_insert_breakpoint,
507 memory_insert_breakpoint);
508 de_fault (to_remove_breakpoint,
509 memory_remove_breakpoint);
510 de_fault (to_can_use_hw_breakpoint,
511 (int (*) (int, int, int))
513 de_fault (to_insert_hw_breakpoint,
514 (int (*) (CORE_ADDR, char *))
516 de_fault (to_remove_hw_breakpoint,
517 (int (*) (CORE_ADDR, char *))
519 de_fault (to_insert_watchpoint,
520 (int (*) (CORE_ADDR, int, int))
522 de_fault (to_remove_watchpoint,
523 (int (*) (CORE_ADDR, int, int))
525 de_fault (to_stopped_by_watchpoint,
528 de_fault (to_stopped_data_address,
529 (int (*) (struct target_ops *, CORE_ADDR *))
531 de_fault (to_region_size_ok_for_hw_watchpoint,
532 default_region_size_ok_for_hw_watchpoint);
533 de_fault (to_terminal_init,
536 de_fault (to_terminal_inferior,
539 de_fault (to_terminal_ours_for_output,
542 de_fault (to_terminal_ours,
545 de_fault (to_terminal_save_ours,
548 de_fault (to_terminal_info,
549 default_terminal_info);
554 (void (*) (char *, int))
556 de_fault (to_lookup_symbol,
557 (int (*) (char *, CORE_ADDR *))
559 de_fault (to_create_inferior,
560 maybe_kill_then_create_inferior);
561 de_fault (to_post_startup_inferior,
564 de_fault (to_acknowledge_created_inferior,
567 de_fault (to_insert_fork_catchpoint,
570 de_fault (to_remove_fork_catchpoint,
573 de_fault (to_insert_vfork_catchpoint,
576 de_fault (to_remove_vfork_catchpoint,
579 de_fault (to_follow_fork,
582 de_fault (to_insert_exec_catchpoint,
585 de_fault (to_remove_exec_catchpoint,
588 de_fault (to_reported_exec_events_per_exec_call,
591 de_fault (to_has_exited,
592 (int (*) (int, int, int *))
594 de_fault (to_mourn_inferior,
597 de_fault (to_can_run,
599 de_fault (to_notice_signals,
602 de_fault (to_thread_alive,
605 de_fault (to_find_new_threads,
608 de_fault (to_extra_thread_info,
609 (char *(*) (struct thread_info *))
614 current_target.to_xfer_partial = default_xfer_partial;
616 (void (*) (char *, struct ui_file *))
618 de_fault (to_enable_exception_callback,
619 (struct symtab_and_line * (*) (enum exception_event_kind, int))
621 de_fault (to_get_current_exception_event,
622 (struct exception_event_record * (*) (void))
624 de_fault (to_pid_to_exec_file,
627 de_fault (to_can_async_p,
630 de_fault (to_is_async_p,
634 (void (*) (void (*) (enum inferior_event_type, void*), void*))
638 /* Finally, position the target-stack beneath the squashed
639 "current_target". That way code looking for a non-inherited
640 target method can quickly and simply find it. */
641 current_target.beneath = target_stack;
644 /* Push a new target type into the stack of the existing target accessors,
645 possibly superseding some of the existing accessors.
647 Result is zero if the pushed target ended up on top of the stack,
648 nonzero if at least one target is on top of it.
650 Rather than allow an empty stack, we always have the dummy target at
651 the bottom stratum, so we can call the function vectors without
655 push_target (struct target_ops *t)
657 struct target_ops **cur;
659 /* Check magic number. If wrong, it probably means someone changed
660 the struct definition, but not all the places that initialize one. */
661 if (t->to_magic != OPS_MAGIC)
663 fprintf_unfiltered (gdb_stderr,
664 "Magic number of %s target struct wrong\n",
666 internal_error (__FILE__, __LINE__, "failed internal consistency check");
669 /* Find the proper stratum to install this target in. */
670 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
672 if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum)
676 /* If there's already targets at this stratum, remove them. */
677 /* FIXME: cagney/2003-10-15: I think this should be poping all
678 targets to CUR, and not just those at this stratum level. */
679 while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum)
681 /* There's already something at this stratum level. Close it,
682 and un-hook it from the stack. */
683 struct target_ops *tmp = (*cur);
684 (*cur) = (*cur)->beneath;
686 target_close (tmp, 0);
689 /* We have removed all targets in our stratum, now add the new one. */
693 update_current_target ();
696 setup_target_debug ();
699 return (t != target_stack);
702 /* Remove a target_ops vector from the stack, wherever it may be.
703 Return how many times it was removed (0 or 1). */
706 unpush_target (struct target_ops *t)
708 struct target_ops **cur;
709 struct target_ops *tmp;
711 /* Look for the specified target. Note that we assume that a target
712 can only occur once in the target stack. */
714 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
721 return 0; /* Didn't find target_ops, quit now */
723 /* NOTE: cagney/2003-12-06: In '94 the close call was made
724 unconditional by moving it to before the above check that the
725 target was in the target stack (something about "Change the way
726 pushing and popping of targets work to support target overlays
727 and inheritance"). This doesn't make much sense - only open
728 targets should be closed. */
731 /* Unchain the target */
733 (*cur) = (*cur)->beneath;
736 update_current_target ();
744 target_close (¤t_target, 0); /* Let it clean up */
745 if (unpush_target (target_stack) == 1)
748 fprintf_unfiltered (gdb_stderr,
749 "pop_target couldn't find target %s\n",
750 current_target.to_shortname);
751 internal_error (__FILE__, __LINE__, "failed internal consistency check");
755 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
757 /* target_read_string -- read a null terminated string, up to LEN bytes,
758 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
759 Set *STRING to a pointer to malloc'd memory containing the data; the caller
760 is responsible for freeing it. Return the number of bytes successfully
764 target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop)
766 int tlen, origlen, offset, i;
770 int buffer_allocated;
772 unsigned int nbytes_read = 0;
774 /* Small for testing. */
775 buffer_allocated = 4;
776 buffer = xmalloc (buffer_allocated);
783 tlen = MIN (len, 4 - (memaddr & 3));
784 offset = memaddr & 3;
786 errcode = target_read_memory (memaddr & ~3, buf, 4);
789 /* The transfer request might have crossed the boundary to an
790 unallocated region of memory. Retry the transfer, requesting
794 errcode = target_read_memory (memaddr, buf, 1);
799 if (bufptr - buffer + tlen > buffer_allocated)
802 bytes = bufptr - buffer;
803 buffer_allocated *= 2;
804 buffer = xrealloc (buffer, buffer_allocated);
805 bufptr = buffer + bytes;
808 for (i = 0; i < tlen; i++)
810 *bufptr++ = buf[i + offset];
811 if (buf[i + offset] == '\000')
813 nbytes_read += i + 1;
830 /* Find a section containing ADDR. */
831 struct section_table *
832 target_section_by_addr (struct target_ops *target, CORE_ADDR addr)
834 struct section_table *secp;
835 for (secp = target->to_sections;
836 secp < target->to_sections_end;
839 if (addr >= secp->addr && addr < secp->endaddr)
845 /* Return non-zero when the target vector has supplied an xfer_partial
846 method and it, rather than xfer_memory, should be used. */
848 target_xfer_partial_p (void)
850 return (target_stack != NULL
851 && target_stack->to_xfer_partial != default_xfer_partial);
855 target_xfer_partial (struct target_ops *ops,
856 enum target_object object, const char *annex,
857 void *readbuf, const void *writebuf,
858 ULONGEST offset, LONGEST len)
862 gdb_assert (ops->to_xfer_partial != NULL);
863 retval = ops->to_xfer_partial (ops, object, annex, readbuf, writebuf,
867 const unsigned char *myaddr = NULL;
869 fprintf_unfiltered (gdb_stdlog,
870 "%s:target_xfer_partial (%d, %s, 0x%lx, 0x%lx, 0x%s, %s) = %s",
873 (annex ? annex : "(null)"),
874 (long) readbuf, (long) writebuf,
875 paddr_nz (offset), paddr_d (len), paddr_d (retval));
881 if (retval > 0 && myaddr != NULL)
885 fputs_unfiltered (", bytes =", gdb_stdlog);
886 for (i = 0; i < retval; i++)
888 if ((((long) &(myaddr[i])) & 0xf) == 0)
890 if (targetdebug < 2 && i > 0)
892 fprintf_unfiltered (gdb_stdlog, " ...");
895 fprintf_unfiltered (gdb_stdlog, "\n");
898 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
902 fputc_unfiltered ('\n', gdb_stdlog);
907 /* Attempt a transfer all LEN bytes starting at OFFSET between the
908 inferior's KIND:ANNEX space and GDB's READBUF/WRITEBUF buffer. If
909 the transfer succeeds, return zero, otherwize the host ERRNO is
912 The inferior is formed from several layers. In the case of
913 corefiles, inf-corefile is layered above inf-exec and a request for
914 text (corefiles do not include text pages) will be first sent to
915 the core-stratum, fail, and then sent to the object-file where it
918 NOTE: cagney/2004-09-30:
920 The old code tried to use four separate mechanisms for mapping an
921 object:offset:len tuple onto an inferior and its address space: the
922 target stack; the inferior's TO_SECTIONS; solib's SO_LIST;
927 The code below is instead using a single mechanism (currently
928 strata). If that mechanism proves insufficient then re-factor it
929 implementing another singluar mechanism (for instance, a generic
930 object:annex onto inferior:object:annex say). */
933 xfer_using_stratum (enum target_object object, const char *annex,
934 ULONGEST offset, LONGEST len, void *readbuf,
935 const void *writebuf)
938 struct target_ops *target;
940 /* Always successful. */
943 /* Never successful. */
944 if (target_stack == NULL)
947 target = target_stack;
950 xfered = target_xfer_partial (target, object, annex,
951 readbuf, writebuf, offset, len);
954 /* The partial xfer succeeded, update the counts, check that
955 the xfer hasn't finished and if it hasn't set things up
956 for the next round. */
962 readbuf = (bfd_byte *) readbuf + xfered;
963 if (writebuf != NULL)
964 writebuf = (bfd_byte *) writebuf + xfered;
965 target = target_stack;
969 /* Something totally screwed up, abandon the attempt to
978 /* This "stratum" didn't work, try the next one down. */
979 target = target->beneath;
986 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
987 GDB's memory at MYADDR. Returns either 0 for success or an errno value
990 If an error occurs, no guarantee is made about the contents of the data at
991 MYADDR. In particular, the caller should not depend upon partial reads
992 filling the buffer with good data. There is no way for the caller to know
993 how much good data might have been transfered anyway. Callers that can
994 deal with partial reads should call target_read_memory_partial. */
997 target_read_memory (CORE_ADDR memaddr, char *myaddr, int len)
999 if (target_xfer_partial_p ())
1000 return xfer_using_stratum (TARGET_OBJECT_MEMORY, NULL,
1001 memaddr, len, myaddr, NULL);
1003 return target_xfer_memory (memaddr, myaddr, len, 0);
1007 target_write_memory (CORE_ADDR memaddr, char *myaddr, int len)
1009 if (target_xfer_partial_p ())
1010 return xfer_using_stratum (TARGET_OBJECT_MEMORY, NULL,
1011 memaddr, len, NULL, myaddr);
1013 return target_xfer_memory (memaddr, myaddr, len, 1);
1016 #ifndef target_stopped_data_address_p
1018 target_stopped_data_address_p (struct target_ops *target)
1020 if (target->to_stopped_data_address
1021 == (int (*) (struct target_ops *, CORE_ADDR *)) return_zero)
1023 if (target->to_stopped_data_address == debug_to_stopped_data_address
1024 && (debug_target.to_stopped_data_address
1025 == (int (*) (struct target_ops *, CORE_ADDR *)) return_zero))
1031 static int trust_readonly = 0;
1033 /* Move memory to or from the targets. The top target gets priority;
1034 if it cannot handle it, it is offered to the next one down, etc.
1036 Result is -1 on error, or the number of bytes transfered. */
1039 do_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
1040 struct mem_attrib *attrib)
1044 struct target_ops *t;
1046 /* Zero length requests are ok and require no work. */
1050 /* to_xfer_memory is not guaranteed to set errno, even when it returns
1054 if (!write && trust_readonly)
1056 struct section_table *secp;
1057 /* User-settable option, "trust-readonly-sections". If true,
1058 then memory from any SEC_READONLY bfd section may be read
1059 directly from the bfd file. */
1060 secp = target_section_by_addr (¤t_target, memaddr);
1062 && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section)
1064 return xfer_memory (memaddr, myaddr, len, 0, attrib, ¤t_target);
1067 /* The quick case is that the top target can handle the transfer. */
1068 res = current_target.to_xfer_memory
1069 (memaddr, myaddr, len, write, attrib, ¤t_target);
1071 /* If res <= 0 then we call it again in the loop. Ah well. */
1074 for (t = target_stack; t != NULL; t = t->beneath)
1076 if (!t->to_has_memory)
1079 res = t->to_xfer_memory (memaddr, myaddr, len, write, attrib, t);
1081 break; /* Handled all or part of xfer */
1082 if (t->to_has_all_memory)
1094 /* Perform a memory transfer. Iterate until the entire region has
1097 Result is 0 or errno value. */
1100 target_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write)
1104 struct mem_region *region;
1106 /* Zero length requests are ok and require no work. */
1114 region = lookup_mem_region(memaddr);
1115 if (memaddr + len < region->hi)
1118 reg_len = region->hi - memaddr;
1120 switch (region->attrib.mode)
1135 if (region->attrib.cache)
1136 res = dcache_xfer_memory (target_dcache, memaddr, myaddr,
1139 res = do_xfer_memory (memaddr, myaddr, reg_len, write,
1144 /* If this address is for nonexistent memory, read zeros
1145 if reading, or do nothing if writing. Return
1148 memset (myaddr, 0, len);
1162 return 0; /* We managed to cover it all somehow. */
1166 /* Perform a partial memory transfer.
1168 Result is -1 on error, or the number of bytes transfered. */
1171 target_xfer_memory_partial (CORE_ADDR memaddr, char *myaddr, int len,
1172 int write_p, int *err)
1176 struct mem_region *region;
1178 /* Zero length requests are ok and require no work. */
1185 region = lookup_mem_region(memaddr);
1186 if (memaddr + len < region->hi)
1189 reg_len = region->hi - memaddr;
1191 switch (region->attrib.mode)
1210 if (region->attrib.cache)
1211 res = dcache_xfer_memory (target_dcache, memaddr, myaddr,
1214 res = do_xfer_memory (memaddr, myaddr, reg_len, write_p,
1232 target_read_memory_partial (CORE_ADDR memaddr, char *buf, int len, int *err)
1234 if (target_xfer_partial_p ())
1235 return target_xfer_partial (target_stack, TARGET_OBJECT_MEMORY, NULL,
1236 buf, NULL, memaddr, len);
1238 return target_xfer_memory_partial (memaddr, buf, len, 0, err);
1242 target_write_memory_partial (CORE_ADDR memaddr, char *buf, int len, int *err)
1244 if (target_xfer_partial_p ())
1245 return target_xfer_partial (target_stack, TARGET_OBJECT_MEMORY, NULL,
1246 NULL, buf, memaddr, len);
1248 return target_xfer_memory_partial (memaddr, buf, len, 1, err);
1251 /* More generic transfers. */
1254 default_xfer_partial (struct target_ops *ops, enum target_object object,
1255 const char *annex, void *readbuf,
1256 const void *writebuf, ULONGEST offset, LONGEST len)
1258 if (object == TARGET_OBJECT_MEMORY
1259 && ops->to_xfer_memory != NULL)
1260 /* If available, fall back to the target's "to_xfer_memory"
1265 if (writebuf != NULL)
1267 void *buffer = xmalloc (len);
1268 struct cleanup *cleanup = make_cleanup (xfree, buffer);
1269 memcpy (buffer, writebuf, len);
1270 xfered = ops->to_xfer_memory (offset, buffer, len, 1/*write*/, NULL,
1272 do_cleanups (cleanup);
1274 if (readbuf != NULL)
1275 xfered = ops->to_xfer_memory (offset, readbuf, len, 0/*read*/, NULL,
1279 else if (xfered == 0 && errno == 0)
1280 /* "to_xfer_memory" uses 0, cross checked against ERRNO as one
1281 indication of an error. */
1286 else if (ops->beneath != NULL)
1287 return target_xfer_partial (ops->beneath, object, annex,
1288 readbuf, writebuf, offset, len);
1293 /* Target vector read/write partial wrapper functions.
1295 NOTE: cagney/2003-10-21: I wonder if having "to_xfer_partial
1296 (inbuf, outbuf)", instead of separate read/write methods, make life
1300 target_read_partial (struct target_ops *ops,
1301 enum target_object object,
1302 const char *annex, void *buf,
1303 ULONGEST offset, LONGEST len)
1305 return target_xfer_partial (ops, object, annex, buf, NULL, offset, len);
1309 target_write_partial (struct target_ops *ops,
1310 enum target_object object,
1311 const char *annex, const void *buf,
1312 ULONGEST offset, LONGEST len)
1314 return target_xfer_partial (ops, object, annex, NULL, buf, offset, len);
1317 /* Wrappers to perform the full transfer. */
1319 target_read (struct target_ops *ops,
1320 enum target_object object,
1321 const char *annex, void *buf,
1322 ULONGEST offset, LONGEST len)
1325 while (xfered < len)
1327 LONGEST xfer = target_read_partial (ops, object, annex,
1328 (bfd_byte *) buf + xfered,
1329 offset + xfered, len - xfered);
1330 /* Call an observer, notifying them of the xfer progress? */
1332 /* Call memory_error? */
1341 target_write (struct target_ops *ops,
1342 enum target_object object,
1343 const char *annex, const void *buf,
1344 ULONGEST offset, LONGEST len)
1347 while (xfered < len)
1349 LONGEST xfer = target_write_partial (ops, object, annex,
1350 (bfd_byte *) buf + xfered,
1351 offset + xfered, len - xfered);
1352 /* Call an observer, notifying them of the xfer progress? */
1354 /* Call memory_error? */
1362 /* Memory transfer methods. */
1365 get_target_memory (struct target_ops *ops, CORE_ADDR addr, void *buf,
1368 if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, buf, addr, len)
1370 memory_error (EIO, addr);
1374 get_target_memory_unsigned (struct target_ops *ops,
1375 CORE_ADDR addr, int len)
1377 char buf[sizeof (ULONGEST)];
1379 gdb_assert (len <= sizeof (buf));
1380 get_target_memory (ops, addr, buf, len);
1381 return extract_unsigned_integer (buf, len);
1385 target_info (char *args, int from_tty)
1387 struct target_ops *t;
1388 int has_all_mem = 0;
1390 if (symfile_objfile != NULL)
1391 printf_unfiltered ("Symbols from \"%s\".\n", symfile_objfile->name);
1393 for (t = target_stack; t != NULL; t = t->beneath)
1395 if (!t->to_has_memory)
1398 if ((int) (t->to_stratum) <= (int) dummy_stratum)
1401 printf_unfiltered ("\tWhile running this, GDB does not access memory from...\n");
1402 printf_unfiltered ("%s:\n", t->to_longname);
1403 (t->to_files_info) (t);
1404 has_all_mem = t->to_has_all_memory;
1408 /* This is to be called by the open routine before it does
1412 target_preopen (int from_tty)
1416 if (target_has_execution)
1419 || query ("A program is being debugged already. Kill it? "))
1422 error ("Program not killed.");
1425 /* Calling target_kill may remove the target from the stack. But if
1426 it doesn't (which seems like a win for UDI), remove it now. */
1428 if (target_has_execution)
1432 /* Detach a target after doing deferred register stores. */
1435 target_detach (char *args, int from_tty)
1437 (current_target.to_detach) (args, from_tty);
1441 target_disconnect (char *args, int from_tty)
1443 (current_target.to_disconnect) (args, from_tty);
1447 target_link (char *modname, CORE_ADDR *t_reloc)
1449 if (DEPRECATED_STREQ (current_target.to_shortname, "rombug"))
1451 (current_target.to_lookup_symbol) (modname, t_reloc);
1453 error ("Unable to link to %s and get relocation in rombug", modname);
1456 *t_reloc = (CORE_ADDR) -1;
1460 target_async_mask (int mask)
1462 int saved_async_masked_status = target_async_mask_value;
1463 target_async_mask_value = mask;
1464 return saved_async_masked_status;
1467 /* Look through the list of possible targets for a target that can
1468 execute a run or attach command without any other data. This is
1469 used to locate the default process stratum.
1471 Result is always valid (error() is called for errors). */
1473 static struct target_ops *
1474 find_default_run_target (char *do_mesg)
1476 struct target_ops **t;
1477 struct target_ops *runable = NULL;
1482 for (t = target_structs; t < target_structs + target_struct_size;
1485 if ((*t)->to_can_run && target_can_run (*t))
1493 error ("Don't know how to %s. Try \"help target\".", do_mesg);
1499 find_default_attach (char *args, int from_tty)
1501 struct target_ops *t;
1503 t = find_default_run_target ("attach");
1504 (t->to_attach) (args, from_tty);
1509 find_default_create_inferior (char *exec_file, char *allargs, char **env,
1512 struct target_ops *t;
1514 t = find_default_run_target ("run");
1515 (t->to_create_inferior) (exec_file, allargs, env, from_tty);
1520 default_region_size_ok_for_hw_watchpoint (int byte_count)
1522 return (byte_count <= TYPE_LENGTH (builtin_type_void_data_ptr));
1538 return_minus_one (void)
1544 * Resize the to_sections pointer. Also make sure that anyone that
1545 * was holding on to an old value of it gets updated.
1546 * Returns the old size.
1550 target_resize_to_sections (struct target_ops *target, int num_added)
1552 struct target_ops **t;
1553 struct section_table *old_value;
1556 old_value = target->to_sections;
1558 if (target->to_sections)
1560 old_count = target->to_sections_end - target->to_sections;
1561 target->to_sections = (struct section_table *)
1562 xrealloc ((char *) target->to_sections,
1563 (sizeof (struct section_table)) * (num_added + old_count));
1568 target->to_sections = (struct section_table *)
1569 xmalloc ((sizeof (struct section_table)) * num_added);
1571 target->to_sections_end = target->to_sections + (num_added + old_count);
1573 /* Check to see if anyone else was pointing to this structure.
1574 If old_value was null, then no one was. */
1578 for (t = target_structs; t < target_structs + target_struct_size;
1581 if ((*t)->to_sections == old_value)
1583 (*t)->to_sections = target->to_sections;
1584 (*t)->to_sections_end = target->to_sections_end;
1587 /* There is a flattened view of the target stack in current_target,
1588 so its to_sections pointer might also need updating. */
1589 if (current_target.to_sections == old_value)
1591 current_target.to_sections = target->to_sections;
1592 current_target.to_sections_end = target->to_sections_end;
1600 /* Remove all target sections taken from ABFD.
1602 Scan the current target stack for targets whose section tables
1603 refer to sections from BFD, and remove those sections. We use this
1604 when we notice that the inferior has unloaded a shared object, for
1607 remove_target_sections (bfd *abfd)
1609 struct target_ops **t;
1611 for (t = target_structs; t < target_structs + target_struct_size; t++)
1613 struct section_table *src, *dest;
1615 dest = (*t)->to_sections;
1616 for (src = (*t)->to_sections; src < (*t)->to_sections_end; src++)
1617 if (src->bfd != abfd)
1619 /* Keep this section. */
1620 if (dest < src) *dest = *src;
1624 /* If we've dropped any sections, resize the section table. */
1626 target_resize_to_sections (*t, dest - src);
1633 /* Find a single runnable target in the stack and return it. If for
1634 some reason there is more than one, return NULL. */
1637 find_run_target (void)
1639 struct target_ops **t;
1640 struct target_ops *runable = NULL;
1645 for (t = target_structs; t < target_structs + target_struct_size; ++t)
1647 if ((*t)->to_can_run && target_can_run (*t))
1654 return (count == 1 ? runable : NULL);
1657 /* Find a single core_stratum target in the list of targets and return it.
1658 If for some reason there is more than one, return NULL. */
1661 find_core_target (void)
1663 struct target_ops **t;
1664 struct target_ops *runable = NULL;
1669 for (t = target_structs; t < target_structs + target_struct_size;
1672 if ((*t)->to_stratum == core_stratum)
1679 return (count == 1 ? runable : NULL);
1683 * Find the next target down the stack from the specified target.
1687 find_target_beneath (struct target_ops *t)
1693 /* The inferior process has died. Long live the inferior! */
1696 generic_mourn_inferior (void)
1698 extern int show_breakpoint_hit_counts;
1700 inferior_ptid = null_ptid;
1702 breakpoint_init_inferior (inf_exited);
1703 registers_changed ();
1705 reopen_exec_file ();
1706 reinit_frame_cache ();
1708 /* It is confusing to the user for ignore counts to stick around
1709 from previous runs of the inferior. So clear them. */
1710 /* However, it is more confusing for the ignore counts to disappear when
1711 using hit counts. So don't clear them if we're counting hits. */
1712 if (!show_breakpoint_hit_counts)
1713 breakpoint_clear_ignore_counts ();
1715 if (deprecated_detach_hook)
1716 deprecated_detach_hook ();
1719 /* Helper function for child_wait and the Lynx derivatives of child_wait.
1720 HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
1721 translation of that in OURSTATUS. */
1723 store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus)
1725 #ifdef CHILD_SPECIAL_WAITSTATUS
1726 /* CHILD_SPECIAL_WAITSTATUS should return nonzero and set *OURSTATUS
1727 if it wants to deal with hoststatus. */
1728 if (CHILD_SPECIAL_WAITSTATUS (ourstatus, hoststatus))
1732 if (WIFEXITED (hoststatus))
1734 ourstatus->kind = TARGET_WAITKIND_EXITED;
1735 ourstatus->value.integer = WEXITSTATUS (hoststatus);
1737 else if (!WIFSTOPPED (hoststatus))
1739 ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
1740 ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus));
1744 ourstatus->kind = TARGET_WAITKIND_STOPPED;
1745 ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus));
1749 /* Returns zero to leave the inferior alone, one to interrupt it. */
1750 int (*target_activity_function) (void);
1751 int target_activity_fd;
1753 /* Convert a normal process ID to a string. Returns the string in a static
1757 normal_pid_to_str (ptid_t ptid)
1759 static char buf[30];
1761 sprintf (buf, "process %d", PIDGET (ptid));
1765 /* Error-catcher for target_find_memory_regions */
1766 static int dummy_find_memory_regions (int (*ignore1) (), void *ignore2)
1768 error ("No target.");
1772 /* Error-catcher for target_make_corefile_notes */
1773 static char * dummy_make_corefile_notes (bfd *ignore1, int *ignore2)
1775 error ("No target.");
1779 /* Set up the handful of non-empty slots needed by the dummy target
1783 init_dummy_target (void)
1785 dummy_target.to_shortname = "None";
1786 dummy_target.to_longname = "None";
1787 dummy_target.to_doc = "";
1788 dummy_target.to_attach = find_default_attach;
1789 dummy_target.to_create_inferior = find_default_create_inferior;
1790 dummy_target.to_pid_to_str = normal_pid_to_str;
1791 dummy_target.to_stratum = dummy_stratum;
1792 dummy_target.to_find_memory_regions = dummy_find_memory_regions;
1793 dummy_target.to_make_corefile_notes = dummy_make_corefile_notes;
1794 dummy_target.to_xfer_partial = default_xfer_partial;
1795 dummy_target.to_magic = OPS_MAGIC;
1799 debug_to_open (char *args, int from_tty)
1801 debug_target.to_open (args, from_tty);
1803 fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty);
1807 debug_to_close (int quitting)
1809 target_close (&debug_target, quitting);
1810 fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting);
1814 target_close (struct target_ops *targ, int quitting)
1816 if (targ->to_xclose != NULL)
1817 targ->to_xclose (targ, quitting);
1818 else if (targ->to_close != NULL)
1819 targ->to_close (quitting);
1823 debug_to_attach (char *args, int from_tty)
1825 debug_target.to_attach (args, from_tty);
1827 fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", args, from_tty);
1832 debug_to_post_attach (int pid)
1834 debug_target.to_post_attach (pid);
1836 fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid);
1840 debug_to_detach (char *args, int from_tty)
1842 debug_target.to_detach (args, from_tty);
1844 fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", args, from_tty);
1848 debug_to_disconnect (char *args, int from_tty)
1850 debug_target.to_disconnect (args, from_tty);
1852 fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n",
1857 debug_to_resume (ptid_t ptid, int step, enum target_signal siggnal)
1859 debug_target.to_resume (ptid, step, siggnal);
1861 fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", PIDGET (ptid),
1862 step ? "step" : "continue",
1863 target_signal_to_name (siggnal));
1867 debug_to_wait (ptid_t ptid, struct target_waitstatus *status)
1871 retval = debug_target.to_wait (ptid, status);
1873 fprintf_unfiltered (gdb_stdlog,
1874 "target_wait (%d, status) = %d, ", PIDGET (ptid),
1876 fprintf_unfiltered (gdb_stdlog, "status->kind = ");
1877 switch (status->kind)
1879 case TARGET_WAITKIND_EXITED:
1880 fprintf_unfiltered (gdb_stdlog, "exited, status = %d\n",
1881 status->value.integer);
1883 case TARGET_WAITKIND_STOPPED:
1884 fprintf_unfiltered (gdb_stdlog, "stopped, signal = %s\n",
1885 target_signal_to_name (status->value.sig));
1887 case TARGET_WAITKIND_SIGNALLED:
1888 fprintf_unfiltered (gdb_stdlog, "signalled, signal = %s\n",
1889 target_signal_to_name (status->value.sig));
1891 case TARGET_WAITKIND_LOADED:
1892 fprintf_unfiltered (gdb_stdlog, "loaded\n");
1894 case TARGET_WAITKIND_FORKED:
1895 fprintf_unfiltered (gdb_stdlog, "forked\n");
1897 case TARGET_WAITKIND_VFORKED:
1898 fprintf_unfiltered (gdb_stdlog, "vforked\n");
1900 case TARGET_WAITKIND_EXECD:
1901 fprintf_unfiltered (gdb_stdlog, "execd\n");
1903 case TARGET_WAITKIND_SPURIOUS:
1904 fprintf_unfiltered (gdb_stdlog, "spurious\n");
1907 fprintf_unfiltered (gdb_stdlog, "unknown???\n");
1915 debug_print_register (const char * func, int regno)
1917 fprintf_unfiltered (gdb_stdlog, "%s ", func);
1918 if (regno >= 0 && regno < NUM_REGS + NUM_PSEUDO_REGS
1919 && REGISTER_NAME (regno) != NULL && REGISTER_NAME (regno)[0] != '\0')
1920 fprintf_unfiltered (gdb_stdlog, "(%s)", REGISTER_NAME (regno));
1922 fprintf_unfiltered (gdb_stdlog, "(%d)", regno);
1926 unsigned char buf[MAX_REGISTER_SIZE];
1927 deprecated_read_register_gen (regno, buf);
1928 fprintf_unfiltered (gdb_stdlog, " = ");
1929 for (i = 0; i < register_size (current_gdbarch, regno); i++)
1931 fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]);
1933 if (register_size (current_gdbarch, regno) <= sizeof (LONGEST))
1935 fprintf_unfiltered (gdb_stdlog, " 0x%s %s",
1936 paddr_nz (read_register (regno)),
1937 paddr_d (read_register (regno)));
1940 fprintf_unfiltered (gdb_stdlog, "\n");
1944 debug_to_fetch_registers (int regno)
1946 debug_target.to_fetch_registers (regno);
1947 debug_print_register ("target_fetch_registers", regno);
1951 debug_to_store_registers (int regno)
1953 debug_target.to_store_registers (regno);
1954 debug_print_register ("target_store_registers", regno);
1955 fprintf_unfiltered (gdb_stdlog, "\n");
1959 debug_to_prepare_to_store (void)
1961 debug_target.to_prepare_to_store ();
1963 fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n");
1967 debug_to_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
1968 struct mem_attrib *attrib,
1969 struct target_ops *target)
1973 retval = debug_target.to_xfer_memory (memaddr, myaddr, len, write,
1976 fprintf_unfiltered (gdb_stdlog,
1977 "target_xfer_memory (0x%x, xxx, %d, %s, xxx) = %d",
1978 (unsigned int) memaddr, /* possable truncate long long */
1979 len, write ? "write" : "read", retval);
1985 fputs_unfiltered (", bytes =", gdb_stdlog);
1986 for (i = 0; i < retval; i++)
1988 if ((((long) &(myaddr[i])) & 0xf) == 0)
1990 if (targetdebug < 2 && i > 0)
1992 fprintf_unfiltered (gdb_stdlog, " ...");
1995 fprintf_unfiltered (gdb_stdlog, "\n");
1998 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
2002 fputc_unfiltered ('\n', gdb_stdlog);
2008 debug_to_files_info (struct target_ops *target)
2010 debug_target.to_files_info (target);
2012 fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n");
2016 debug_to_insert_breakpoint (CORE_ADDR addr, char *save)
2020 retval = debug_target.to_insert_breakpoint (addr, save);
2022 fprintf_unfiltered (gdb_stdlog,
2023 "target_insert_breakpoint (0x%lx, xxx) = %ld\n",
2024 (unsigned long) addr,
2025 (unsigned long) retval);
2030 debug_to_remove_breakpoint (CORE_ADDR addr, char *save)
2034 retval = debug_target.to_remove_breakpoint (addr, save);
2036 fprintf_unfiltered (gdb_stdlog,
2037 "target_remove_breakpoint (0x%lx, xxx) = %ld\n",
2038 (unsigned long) addr,
2039 (unsigned long) retval);
2044 debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty)
2048 retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty);
2050 fprintf_unfiltered (gdb_stdlog,
2051 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
2052 (unsigned long) type,
2053 (unsigned long) cnt,
2054 (unsigned long) from_tty,
2055 (unsigned long) retval);
2060 debug_to_region_size_ok_for_hw_watchpoint (int byte_count)
2064 retval = debug_target.to_region_size_ok_for_hw_watchpoint (byte_count);
2066 fprintf_unfiltered (gdb_stdlog,
2067 "TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT (%ld) = 0x%lx\n",
2068 (unsigned long) byte_count,
2069 (unsigned long) retval);
2074 debug_to_stopped_by_watchpoint (void)
2078 retval = debug_target.to_stopped_by_watchpoint ();
2080 fprintf_unfiltered (gdb_stdlog,
2081 "STOPPED_BY_WATCHPOINT () = %ld\n",
2082 (unsigned long) retval);
2087 debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr)
2091 retval = debug_target.to_stopped_data_address (target, addr);
2093 fprintf_unfiltered (gdb_stdlog,
2094 "target_stopped_data_address ([0x%lx]) = %ld\n",
2095 (unsigned long)*addr,
2096 (unsigned long)retval);
2101 debug_to_insert_hw_breakpoint (CORE_ADDR addr, char *save)
2105 retval = debug_target.to_insert_hw_breakpoint (addr, save);
2107 fprintf_unfiltered (gdb_stdlog,
2108 "target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n",
2109 (unsigned long) addr,
2110 (unsigned long) retval);
2115 debug_to_remove_hw_breakpoint (CORE_ADDR addr, char *save)
2119 retval = debug_target.to_remove_hw_breakpoint (addr, save);
2121 fprintf_unfiltered (gdb_stdlog,
2122 "target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n",
2123 (unsigned long) addr,
2124 (unsigned long) retval);
2129 debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type)
2133 retval = debug_target.to_insert_watchpoint (addr, len, type);
2135 fprintf_unfiltered (gdb_stdlog,
2136 "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n",
2137 (unsigned long) addr, len, type, (unsigned long) retval);
2142 debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type)
2146 retval = debug_target.to_insert_watchpoint (addr, len, type);
2148 fprintf_unfiltered (gdb_stdlog,
2149 "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n",
2150 (unsigned long) addr, len, type, (unsigned long) retval);
2155 debug_to_terminal_init (void)
2157 debug_target.to_terminal_init ();
2159 fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n");
2163 debug_to_terminal_inferior (void)
2165 debug_target.to_terminal_inferior ();
2167 fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n");
2171 debug_to_terminal_ours_for_output (void)
2173 debug_target.to_terminal_ours_for_output ();
2175 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n");
2179 debug_to_terminal_ours (void)
2181 debug_target.to_terminal_ours ();
2183 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n");
2187 debug_to_terminal_save_ours (void)
2189 debug_target.to_terminal_save_ours ();
2191 fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n");
2195 debug_to_terminal_info (char *arg, int from_tty)
2197 debug_target.to_terminal_info (arg, from_tty);
2199 fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg,
2204 debug_to_kill (void)
2206 debug_target.to_kill ();
2208 fprintf_unfiltered (gdb_stdlog, "target_kill ()\n");
2212 debug_to_load (char *args, int from_tty)
2214 debug_target.to_load (args, from_tty);
2216 fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty);
2220 debug_to_lookup_symbol (char *name, CORE_ADDR *addrp)
2224 retval = debug_target.to_lookup_symbol (name, addrp);
2226 fprintf_unfiltered (gdb_stdlog, "target_lookup_symbol (%s, xxx)\n", name);
2232 debug_to_create_inferior (char *exec_file, char *args, char **env,
2235 debug_target.to_create_inferior (exec_file, args, env, from_tty);
2237 fprintf_unfiltered (gdb_stdlog, "target_create_inferior (%s, %s, xxx, %d)\n",
2238 exec_file, args, from_tty);
2242 debug_to_post_startup_inferior (ptid_t ptid)
2244 debug_target.to_post_startup_inferior (ptid);
2246 fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n",
2251 debug_to_acknowledge_created_inferior (int pid)
2253 debug_target.to_acknowledge_created_inferior (pid);
2255 fprintf_unfiltered (gdb_stdlog, "target_acknowledge_created_inferior (%d)\n",
2260 debug_to_insert_fork_catchpoint (int pid)
2264 retval = debug_target.to_insert_fork_catchpoint (pid);
2266 fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n",
2273 debug_to_remove_fork_catchpoint (int pid)
2277 retval = debug_target.to_remove_fork_catchpoint (pid);
2279 fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n",
2286 debug_to_insert_vfork_catchpoint (int pid)
2290 retval = debug_target.to_insert_vfork_catchpoint (pid);
2292 fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d)= %d\n",
2299 debug_to_remove_vfork_catchpoint (int pid)
2303 retval = debug_target.to_remove_vfork_catchpoint (pid);
2305 fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n",
2312 debug_to_follow_fork (int follow_child)
2314 int retval = debug_target.to_follow_fork (follow_child);
2316 fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n",
2317 follow_child, retval);
2323 debug_to_insert_exec_catchpoint (int pid)
2327 retval = debug_target.to_insert_exec_catchpoint (pid);
2329 fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n",
2336 debug_to_remove_exec_catchpoint (int pid)
2340 retval = debug_target.to_remove_exec_catchpoint (pid);
2342 fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n",
2349 debug_to_reported_exec_events_per_exec_call (void)
2351 int reported_exec_events;
2353 reported_exec_events = debug_target.to_reported_exec_events_per_exec_call ();
2355 fprintf_unfiltered (gdb_stdlog,
2356 "target_reported_exec_events_per_exec_call () = %d\n",
2357 reported_exec_events);
2359 return reported_exec_events;
2363 debug_to_has_exited (int pid, int wait_status, int *exit_status)
2367 has_exited = debug_target.to_has_exited (pid, wait_status, exit_status);
2369 fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n",
2370 pid, wait_status, *exit_status, has_exited);
2376 debug_to_mourn_inferior (void)
2378 debug_target.to_mourn_inferior ();
2380 fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n");
2384 debug_to_can_run (void)
2388 retval = debug_target.to_can_run ();
2390 fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval);
2396 debug_to_notice_signals (ptid_t ptid)
2398 debug_target.to_notice_signals (ptid);
2400 fprintf_unfiltered (gdb_stdlog, "target_notice_signals (%d)\n",
2405 debug_to_thread_alive (ptid_t ptid)
2409 retval = debug_target.to_thread_alive (ptid);
2411 fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n",
2412 PIDGET (ptid), retval);
2418 debug_to_find_new_threads (void)
2420 debug_target.to_find_new_threads ();
2422 fputs_unfiltered ("target_find_new_threads ()\n", gdb_stdlog);
2426 debug_to_stop (void)
2428 debug_target.to_stop ();
2430 fprintf_unfiltered (gdb_stdlog, "target_stop ()\n");
2434 debug_to_rcmd (char *command,
2435 struct ui_file *outbuf)
2437 debug_target.to_rcmd (command, outbuf);
2438 fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command);
2441 static struct symtab_and_line *
2442 debug_to_enable_exception_callback (enum exception_event_kind kind, int enable)
2444 struct symtab_and_line *result;
2445 result = debug_target.to_enable_exception_callback (kind, enable);
2446 fprintf_unfiltered (gdb_stdlog,
2447 "target get_exception_callback_sal (%d, %d)\n",
2452 static struct exception_event_record *
2453 debug_to_get_current_exception_event (void)
2455 struct exception_event_record *result;
2456 result = debug_target.to_get_current_exception_event ();
2457 fprintf_unfiltered (gdb_stdlog, "target get_current_exception_event ()\n");
2462 debug_to_pid_to_exec_file (int pid)
2466 exec_file = debug_target.to_pid_to_exec_file (pid);
2468 fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n",
2475 setup_target_debug (void)
2477 memcpy (&debug_target, ¤t_target, sizeof debug_target);
2479 current_target.to_open = debug_to_open;
2480 current_target.to_close = debug_to_close;
2481 current_target.to_attach = debug_to_attach;
2482 current_target.to_post_attach = debug_to_post_attach;
2483 current_target.to_detach = debug_to_detach;
2484 current_target.to_disconnect = debug_to_disconnect;
2485 current_target.to_resume = debug_to_resume;
2486 current_target.to_wait = debug_to_wait;
2487 current_target.to_fetch_registers = debug_to_fetch_registers;
2488 current_target.to_store_registers = debug_to_store_registers;
2489 current_target.to_prepare_to_store = debug_to_prepare_to_store;
2490 current_target.to_xfer_memory = debug_to_xfer_memory;
2491 current_target.to_files_info = debug_to_files_info;
2492 current_target.to_insert_breakpoint = debug_to_insert_breakpoint;
2493 current_target.to_remove_breakpoint = debug_to_remove_breakpoint;
2494 current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint;
2495 current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint;
2496 current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint;
2497 current_target.to_insert_watchpoint = debug_to_insert_watchpoint;
2498 current_target.to_remove_watchpoint = debug_to_remove_watchpoint;
2499 current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint;
2500 current_target.to_stopped_data_address = debug_to_stopped_data_address;
2501 current_target.to_region_size_ok_for_hw_watchpoint = debug_to_region_size_ok_for_hw_watchpoint;
2502 current_target.to_terminal_init = debug_to_terminal_init;
2503 current_target.to_terminal_inferior = debug_to_terminal_inferior;
2504 current_target.to_terminal_ours_for_output = debug_to_terminal_ours_for_output;
2505 current_target.to_terminal_ours = debug_to_terminal_ours;
2506 current_target.to_terminal_save_ours = debug_to_terminal_save_ours;
2507 current_target.to_terminal_info = debug_to_terminal_info;
2508 current_target.to_kill = debug_to_kill;
2509 current_target.to_load = debug_to_load;
2510 current_target.to_lookup_symbol = debug_to_lookup_symbol;
2511 current_target.to_create_inferior = debug_to_create_inferior;
2512 current_target.to_post_startup_inferior = debug_to_post_startup_inferior;
2513 current_target.to_acknowledge_created_inferior = debug_to_acknowledge_created_inferior;
2514 current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint;
2515 current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint;
2516 current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint;
2517 current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint;
2518 current_target.to_follow_fork = debug_to_follow_fork;
2519 current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint;
2520 current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint;
2521 current_target.to_reported_exec_events_per_exec_call = debug_to_reported_exec_events_per_exec_call;
2522 current_target.to_has_exited = debug_to_has_exited;
2523 current_target.to_mourn_inferior = debug_to_mourn_inferior;
2524 current_target.to_can_run = debug_to_can_run;
2525 current_target.to_notice_signals = debug_to_notice_signals;
2526 current_target.to_thread_alive = debug_to_thread_alive;
2527 current_target.to_find_new_threads = debug_to_find_new_threads;
2528 current_target.to_stop = debug_to_stop;
2529 current_target.to_rcmd = debug_to_rcmd;
2530 current_target.to_enable_exception_callback = debug_to_enable_exception_callback;
2531 current_target.to_get_current_exception_event = debug_to_get_current_exception_event;
2532 current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file;
2537 static char targ_desc[] =
2538 "Names of targets and files being debugged.\n\
2539 Shows the entire stack of targets currently in use (including the exec-file,\n\
2540 core-file, and process, if any), as well as the symbol file name.";
2543 do_monitor_command (char *cmd,
2546 if ((current_target.to_rcmd
2547 == (void (*) (char *, struct ui_file *)) tcomplain)
2548 || (current_target.to_rcmd == debug_to_rcmd
2549 && (debug_target.to_rcmd
2550 == (void (*) (char *, struct ui_file *)) tcomplain)))
2552 error ("\"monitor\" command not supported by this target.\n");
2554 target_rcmd (cmd, gdb_stdtarg);
2558 initialize_targets (void)
2560 init_dummy_target ();
2561 push_target (&dummy_target);
2563 add_info ("target", target_info, targ_desc);
2564 add_info ("files", target_info, targ_desc);
2566 deprecated_add_show_from_set
2567 (add_set_cmd ("target", class_maintenance, var_zinteger,
2568 (char *) &targetdebug,
2569 "Set target debugging.\n\
2570 When non-zero, target debugging is enabled. Higher numbers are more\n\
2571 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
2572 command.", &setdebuglist),
2575 add_setshow_boolean_cmd ("trust-readonly-sections", class_support,
2577 Set mode for reading from readonly sections.", "\
2578 Show mode for reading from readonly sections.", "\
2579 When this mode is on, memory reads from readonly sections (such as .text)\n\
2580 will be read from the object file instead of from the target. This will\n\
2581 result in significant performance improvement for remote targets.", "\
2582 Mode for reading from readonly sections is %s.",
2584 &setlist, &showlist);
2586 add_com ("monitor", class_obscure, do_monitor_command,
2587 "Send a command to the remote monitor (remote targets only).");
2589 target_dcache = dcache_init ();