1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2014 Free Software Foundation, Inc.
5 Contributed by Cygnus Support.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "target-dcache.h"
36 #include "gdb_assert.h"
38 #include "exceptions.h"
39 #include "target-descriptions.h"
40 #include "gdbthread.h"
43 #include "inline-frame.h"
44 #include "tracepoint.h"
45 #include "gdb/fileio.h"
48 static void target_info (char *, int);
50 static void default_terminal_info (struct target_ops *, const char *, int);
52 static int default_watchpoint_addr_within_range (struct target_ops *,
53 CORE_ADDR, CORE_ADDR, int);
55 static int default_region_ok_for_hw_watchpoint (struct target_ops *,
58 static void default_rcmd (struct target_ops *, char *, struct ui_file *);
60 static ptid_t default_get_ada_task_ptid (struct target_ops *self,
63 static void tcomplain (void) ATTRIBUTE_NORETURN;
65 static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *);
67 static int return_zero (void);
69 void target_ignore (void);
71 static void target_command (char *, int);
73 static struct target_ops *find_default_run_target (char *);
75 static target_xfer_partial_ftype default_xfer_partial;
77 static struct gdbarch *default_thread_architecture (struct target_ops *ops,
80 static int dummy_find_memory_regions (struct target_ops *self,
81 find_memory_region_ftype ignore1,
84 static char *dummy_make_corefile_notes (struct target_ops *self,
85 bfd *ignore1, int *ignore2);
87 static int find_default_can_async_p (struct target_ops *ignore);
89 static int find_default_is_async_p (struct target_ops *ignore);
91 static enum exec_direction_kind default_execution_direction
92 (struct target_ops *self);
94 #include "target-delegates.c"
96 static void init_dummy_target (void);
98 static struct target_ops debug_target;
100 static void debug_to_open (char *, int);
102 static void debug_to_prepare_to_store (struct target_ops *self,
105 static void debug_to_files_info (struct target_ops *);
107 static int debug_to_insert_breakpoint (struct target_ops *, struct gdbarch *,
108 struct bp_target_info *);
110 static int debug_to_remove_breakpoint (struct target_ops *, struct gdbarch *,
111 struct bp_target_info *);
113 static int debug_to_can_use_hw_breakpoint (struct target_ops *self,
116 static int debug_to_insert_hw_breakpoint (struct target_ops *self,
118 struct bp_target_info *);
120 static int debug_to_remove_hw_breakpoint (struct target_ops *self,
122 struct bp_target_info *);
124 static int debug_to_insert_watchpoint (struct target_ops *self,
126 struct expression *);
128 static int debug_to_remove_watchpoint (struct target_ops *self,
130 struct expression *);
132 static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *);
134 static int debug_to_watchpoint_addr_within_range (struct target_ops *,
135 CORE_ADDR, CORE_ADDR, int);
137 static int debug_to_region_ok_for_hw_watchpoint (struct target_ops *self,
140 static int debug_to_can_accel_watchpoint_condition (struct target_ops *self,
142 struct expression *);
144 static void debug_to_terminal_init (struct target_ops *self);
146 static void debug_to_terminal_inferior (struct target_ops *self);
148 static void debug_to_terminal_ours_for_output (struct target_ops *self);
150 static void debug_to_terminal_save_ours (struct target_ops *self);
152 static void debug_to_terminal_ours (struct target_ops *self);
154 static void debug_to_load (struct target_ops *self, char *, int);
156 static int debug_to_can_run (struct target_ops *self);
158 static void debug_to_stop (struct target_ops *self, ptid_t);
160 /* Pointer to array of target architecture structures; the size of the
161 array; the current index into the array; the allocated size of the
163 struct target_ops **target_structs;
164 unsigned target_struct_size;
165 unsigned target_struct_allocsize;
166 #define DEFAULT_ALLOCSIZE 10
168 /* The initial current target, so that there is always a semi-valid
171 static struct target_ops dummy_target;
173 /* Top of target stack. */
175 static struct target_ops *target_stack;
177 /* The target structure we are currently using to talk to a process
178 or file or whatever "inferior" we have. */
180 struct target_ops current_target;
182 /* Command list for target. */
184 static struct cmd_list_element *targetlist = NULL;
186 /* Nonzero if we should trust readonly sections from the
187 executable when reading memory. */
189 static int trust_readonly = 0;
191 /* Nonzero if we should show true memory content including
192 memory breakpoint inserted by gdb. */
194 static int show_memory_breakpoints = 0;
196 /* These globals control whether GDB attempts to perform these
197 operations; they are useful for targets that need to prevent
198 inadvertant disruption, such as in non-stop mode. */
200 int may_write_registers = 1;
202 int may_write_memory = 1;
204 int may_insert_breakpoints = 1;
206 int may_insert_tracepoints = 1;
208 int may_insert_fast_tracepoints = 1;
212 /* Non-zero if we want to see trace of target level stuff. */
214 static unsigned int targetdebug = 0;
216 show_targetdebug (struct ui_file *file, int from_tty,
217 struct cmd_list_element *c, const char *value)
219 fprintf_filtered (file, _("Target debugging is %s.\n"), value);
222 static void setup_target_debug (void);
224 /* The user just typed 'target' without the name of a target. */
227 target_command (char *arg, int from_tty)
229 fputs_filtered ("Argument required (target name). Try `help target'\n",
233 /* Default target_has_* methods for process_stratum targets. */
236 default_child_has_all_memory (struct target_ops *ops)
238 /* If no inferior selected, then we can't read memory here. */
239 if (ptid_equal (inferior_ptid, null_ptid))
246 default_child_has_memory (struct target_ops *ops)
248 /* If no inferior selected, then we can't read memory here. */
249 if (ptid_equal (inferior_ptid, null_ptid))
256 default_child_has_stack (struct target_ops *ops)
258 /* If no inferior selected, there's no stack. */
259 if (ptid_equal (inferior_ptid, null_ptid))
266 default_child_has_registers (struct target_ops *ops)
268 /* Can't read registers from no inferior. */
269 if (ptid_equal (inferior_ptid, null_ptid))
276 default_child_has_execution (struct target_ops *ops, ptid_t the_ptid)
278 /* If there's no thread selected, then we can't make it run through
280 if (ptid_equal (the_ptid, null_ptid))
288 target_has_all_memory_1 (void)
290 struct target_ops *t;
292 for (t = current_target.beneath; t != NULL; t = t->beneath)
293 if (t->to_has_all_memory (t))
300 target_has_memory_1 (void)
302 struct target_ops *t;
304 for (t = current_target.beneath; t != NULL; t = t->beneath)
305 if (t->to_has_memory (t))
312 target_has_stack_1 (void)
314 struct target_ops *t;
316 for (t = current_target.beneath; t != NULL; t = t->beneath)
317 if (t->to_has_stack (t))
324 target_has_registers_1 (void)
326 struct target_ops *t;
328 for (t = current_target.beneath; t != NULL; t = t->beneath)
329 if (t->to_has_registers (t))
336 target_has_execution_1 (ptid_t the_ptid)
338 struct target_ops *t;
340 for (t = current_target.beneath; t != NULL; t = t->beneath)
341 if (t->to_has_execution (t, the_ptid))
348 target_has_execution_current (void)
350 return target_has_execution_1 (inferior_ptid);
353 /* Complete initialization of T. This ensures that various fields in
354 T are set, if needed by the target implementation. */
357 complete_target_initialization (struct target_ops *t)
359 /* Provide default values for all "must have" methods. */
360 if (t->to_xfer_partial == NULL)
361 t->to_xfer_partial = default_xfer_partial;
363 if (t->to_has_all_memory == NULL)
364 t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero;
366 if (t->to_has_memory == NULL)
367 t->to_has_memory = (int (*) (struct target_ops *)) return_zero;
369 if (t->to_has_stack == NULL)
370 t->to_has_stack = (int (*) (struct target_ops *)) return_zero;
372 if (t->to_has_registers == NULL)
373 t->to_has_registers = (int (*) (struct target_ops *)) return_zero;
375 if (t->to_has_execution == NULL)
376 t->to_has_execution = (int (*) (struct target_ops *, ptid_t)) return_zero;
378 install_delegators (t);
381 /* Add possible target architecture T to the list and add a new
382 command 'target T->to_shortname'. Set COMPLETER as the command's
383 completer if not NULL. */
386 add_target_with_completer (struct target_ops *t,
387 completer_ftype *completer)
389 struct cmd_list_element *c;
391 complete_target_initialization (t);
395 target_struct_allocsize = DEFAULT_ALLOCSIZE;
396 target_structs = (struct target_ops **) xmalloc
397 (target_struct_allocsize * sizeof (*target_structs));
399 if (target_struct_size >= target_struct_allocsize)
401 target_struct_allocsize *= 2;
402 target_structs = (struct target_ops **)
403 xrealloc ((char *) target_structs,
404 target_struct_allocsize * sizeof (*target_structs));
406 target_structs[target_struct_size++] = t;
408 if (targetlist == NULL)
409 add_prefix_cmd ("target", class_run, target_command, _("\
410 Connect to a target machine or process.\n\
411 The first argument is the type or protocol of the target machine.\n\
412 Remaining arguments are interpreted by the target protocol. For more\n\
413 information on the arguments for a particular protocol, type\n\
414 `help target ' followed by the protocol name."),
415 &targetlist, "target ", 0, &cmdlist);
416 c = add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc,
418 if (completer != NULL)
419 set_cmd_completer (c, completer);
422 /* Add a possible target architecture to the list. */
425 add_target (struct target_ops *t)
427 add_target_with_completer (t, NULL);
433 add_deprecated_target_alias (struct target_ops *t, char *alias)
435 struct cmd_list_element *c;
438 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
440 c = add_cmd (alias, no_class, t->to_open, t->to_doc, &targetlist);
441 alt = xstrprintf ("target %s", t->to_shortname);
442 deprecate_cmd (c, alt);
455 struct target_ops *t;
457 for (t = current_target.beneath; t != NULL; t = t->beneath)
458 if (t->to_kill != NULL)
461 fprintf_unfiltered (gdb_stdlog, "target_kill ()\n");
471 target_load (char *arg, int from_tty)
473 target_dcache_invalidate ();
474 (*current_target.to_load) (¤t_target, arg, from_tty);
478 target_create_inferior (char *exec_file, char *args,
479 char **env, int from_tty)
481 struct target_ops *t;
483 for (t = current_target.beneath; t != NULL; t = t->beneath)
485 if (t->to_create_inferior != NULL)
487 t->to_create_inferior (t, exec_file, args, env, from_tty);
489 fprintf_unfiltered (gdb_stdlog,
490 "target_create_inferior (%s, %s, xxx, %d)\n",
491 exec_file, args, from_tty);
496 internal_error (__FILE__, __LINE__,
497 _("could not find a target to create inferior"));
501 target_terminal_inferior (void)
503 /* A background resume (``run&'') should leave GDB in control of the
504 terminal. Use target_can_async_p, not target_is_async_p, since at
505 this point the target is not async yet. However, if sync_execution
506 is not set, we know it will become async prior to resume. */
507 if (target_can_async_p () && !sync_execution)
510 /* If GDB is resuming the inferior in the foreground, install
511 inferior's terminal modes. */
512 (*current_target.to_terminal_inferior) (¤t_target);
516 nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write,
517 struct target_ops *t)
519 errno = EIO; /* Can't read/write this location. */
520 return 0; /* No bytes handled. */
526 error (_("You can't do that when your target is `%s'"),
527 current_target.to_shortname);
533 error (_("You can't do that without a process to debug."));
537 default_terminal_info (struct target_ops *self, const char *args, int from_tty)
539 printf_unfiltered (_("No saved terminal information.\n"));
542 /* A default implementation for the to_get_ada_task_ptid target method.
544 This function builds the PTID by using both LWP and TID as part of
545 the PTID lwp and tid elements. The pid used is the pid of the
549 default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid)
551 return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid);
554 static enum exec_direction_kind
555 default_execution_direction (struct target_ops *self)
557 if (!target_can_execute_reverse)
559 else if (!target_can_async_p ())
562 gdb_assert_not_reached ("\
563 to_execution_direction must be implemented for reverse async");
566 /* Go through the target stack from top to bottom, copying over zero
567 entries in current_target, then filling in still empty entries. In
568 effect, we are doing class inheritance through the pushed target
571 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
572 is currently implemented, is that it discards any knowledge of
573 which target an inherited method originally belonged to.
574 Consequently, new new target methods should instead explicitly and
575 locally search the target stack for the target that can handle the
579 update_current_target (void)
581 struct target_ops *t;
583 /* First, reset current's contents. */
584 memset (¤t_target, 0, sizeof (current_target));
586 /* Install the delegators. */
587 install_delegators (¤t_target);
589 #define INHERIT(FIELD, TARGET) \
590 if (!current_target.FIELD) \
591 current_target.FIELD = (TARGET)->FIELD
593 for (t = target_stack; t; t = t->beneath)
595 INHERIT (to_shortname, t);
596 INHERIT (to_longname, t);
598 /* Do not inherit to_open. */
599 /* Do not inherit to_close. */
600 /* Do not inherit to_attach. */
601 /* Do not inherit to_post_attach. */
602 INHERIT (to_attach_no_wait, t);
603 /* Do not inherit to_detach. */
604 /* Do not inherit to_disconnect. */
605 /* Do not inherit to_resume. */
606 /* Do not inherit to_wait. */
607 /* Do not inherit to_fetch_registers. */
608 /* Do not inherit to_store_registers. */
609 /* Do not inherit to_prepare_to_store. */
610 INHERIT (deprecated_xfer_memory, t);
611 /* Do not inherit to_files_info. */
612 /* Do not inherit to_insert_breakpoint. */
613 /* Do not inherit to_remove_breakpoint. */
614 /* Do not inherit to_can_use_hw_breakpoint. */
615 /* Do not inherit to_insert_hw_breakpoint. */
616 /* Do not inherit to_remove_hw_breakpoint. */
617 /* Do not inherit to_ranged_break_num_registers. */
618 /* Do not inherit to_insert_watchpoint. */
619 /* Do not inherit to_remove_watchpoint. */
620 /* Do not inherit to_insert_mask_watchpoint. */
621 /* Do not inherit to_remove_mask_watchpoint. */
622 /* Do not inherit to_stopped_data_address. */
623 INHERIT (to_have_steppable_watchpoint, t);
624 INHERIT (to_have_continuable_watchpoint, t);
625 /* Do not inherit to_stopped_by_watchpoint. */
626 /* Do not inherit to_watchpoint_addr_within_range. */
627 /* Do not inherit to_region_ok_for_hw_watchpoint. */
628 /* Do not inherit to_can_accel_watchpoint_condition. */
629 /* Do not inherit to_masked_watch_num_registers. */
630 /* Do not inherit to_terminal_init. */
631 /* Do not inherit to_terminal_inferior. */
632 /* Do not inherit to_terminal_ours_for_output. */
633 /* Do not inherit to_terminal_ours. */
634 /* Do not inherit to_terminal_save_ours. */
635 /* Do not inherit to_terminal_info. */
636 /* Do not inherit to_kill. */
637 /* Do not inherit to_load. */
638 /* Do no inherit to_create_inferior. */
639 /* Do not inherit to_post_startup_inferior. */
640 /* Do not inherit to_insert_fork_catchpoint. */
641 /* Do not inherit to_remove_fork_catchpoint. */
642 /* Do not inherit to_insert_vfork_catchpoint. */
643 /* Do not inherit to_remove_vfork_catchpoint. */
644 /* Do not inherit to_follow_fork. */
645 /* Do not inherit to_insert_exec_catchpoint. */
646 /* Do not inherit to_remove_exec_catchpoint. */
647 /* Do not inherit to_set_syscall_catchpoint. */
648 /* Do not inherit to_has_exited. */
649 /* Do not inherit to_mourn_inferior. */
650 INHERIT (to_can_run, t);
651 /* Do not inherit to_pass_signals. */
652 /* Do not inherit to_program_signals. */
653 /* Do not inherit to_thread_alive. */
654 /* Do not inherit to_find_new_threads. */
655 /* Do not inherit to_pid_to_str. */
656 /* Do not inherit to_extra_thread_info. */
657 /* Do not inherit to_thread_name. */
658 INHERIT (to_stop, t);
659 /* Do not inherit to_xfer_partial. */
660 /* Do not inherit to_rcmd. */
661 /* Do not inherit to_pid_to_exec_file. */
662 /* Do not inherit to_log_command. */
663 INHERIT (to_stratum, t);
664 /* Do not inherit to_has_all_memory. */
665 /* Do not inherit to_has_memory. */
666 /* Do not inherit to_has_stack. */
667 /* Do not inherit to_has_registers. */
668 /* Do not inherit to_has_execution. */
669 INHERIT (to_has_thread_control, t);
670 /* Do not inherit to_can_async_p. */
671 /* Do not inherit to_is_async_p. */
672 /* Do not inherit to_async. */
673 /* Do not inherit to_find_memory_regions. */
674 /* Do not inherit to_make_corefile_notes. */
675 /* Do not inherit to_get_bookmark. */
676 /* Do not inherit to_goto_bookmark. */
677 /* Do not inherit to_get_thread_local_address. */
678 /* Do not inherit to_can_execute_reverse. */
679 /* Do not inherit to_execution_direction. */
680 /* Do not inherit to_thread_architecture. */
681 /* Do not inherit to_read_description. */
682 /* Do not inherit to_get_ada_task_ptid. */
683 /* Do not inherit to_search_memory. */
684 /* Do not inherit to_supports_multi_process. */
685 /* Do not inherit to_supports_enable_disable_tracepoint. */
686 /* Do not inherit to_supports_string_tracing. */
687 /* Do not inherit to_trace_init. */
688 /* Do not inherit to_download_tracepoint. */
689 /* Do not inherit to_can_download_tracepoint. */
690 /* Do not inherit to_download_trace_state_variable. */
691 /* Do not inherit to_enable_tracepoint. */
692 /* Do not inherit to_disable_tracepoint. */
693 /* Do not inherit to_trace_set_readonly_regions. */
694 /* Do not inherit to_trace_start. */
695 /* Do not inherit to_get_trace_status. */
696 /* Do not inherit to_get_tracepoint_status. */
697 /* Do not inherit to_trace_stop. */
698 /* Do not inherit to_trace_find. */
699 /* Do not inherit to_get_trace_state_variable_value. */
700 /* Do not inherit to_save_trace_data. */
701 /* Do not inherit to_upload_tracepoints. */
702 /* Do not inherit to_upload_trace_state_variables. */
703 /* Do not inherit to_get_raw_trace_data. */
704 /* Do not inherit to_get_min_fast_tracepoint_insn_len. */
705 /* Do not inherit to_set_disconnected_tracing. */
706 /* Do not inherit to_set_circular_trace_buffer. */
707 /* Do not inherit to_set_trace_buffer_size. */
708 /* Do not inherit to_set_trace_notes. */
709 /* Do not inherit to_get_tib_address. */
710 /* Do not inherit to_set_permissions. */
711 /* Do not inherit to_static_tracepoint_marker_at. */
712 /* Do not inherit to_static_tracepoint_markers_by_strid. */
713 /* Do not inherit to_traceframe_info. */
714 /* Do not inherit to_use_agent. */
715 /* Do not inherit to_can_use_agent. */
716 INHERIT (to_augmented_libraries_svr4_read, t);
717 INHERIT (to_magic, t);
718 INHERIT (to_supports_evaluation_of_breakpoint_conditions, t);
719 INHERIT (to_can_run_breakpoint_commands, t);
720 /* Do not inherit to_memory_map. */
721 /* Do not inherit to_flash_erase. */
722 /* Do not inherit to_flash_done. */
726 /* Clean up a target struct so it no longer has any zero pointers in
727 it. Some entries are defaulted to a method that print an error,
728 others are hard-wired to a standard recursive default. */
730 #define de_fault(field, value) \
731 if (!current_target.field) \
732 current_target.field = value
735 (void (*) (char *, int))
738 (void (*) (struct target_ops *))
740 de_fault (deprecated_xfer_memory,
741 (int (*) (CORE_ADDR, gdb_byte *, int, int,
742 struct mem_attrib *, struct target_ops *))
744 de_fault (to_can_run,
745 (int (*) (struct target_ops *))
748 (void (*) (struct target_ops *, ptid_t))
750 current_target.to_read_description = NULL;
751 de_fault (to_supports_evaluation_of_breakpoint_conditions,
752 (int (*) (struct target_ops *))
754 de_fault (to_can_run_breakpoint_commands,
755 (int (*) (struct target_ops *))
757 de_fault (to_augmented_libraries_svr4_read,
758 (int (*) (struct target_ops *))
763 /* Finally, position the target-stack beneath the squashed
764 "current_target". That way code looking for a non-inherited
765 target method can quickly and simply find it. */
766 current_target.beneath = target_stack;
769 setup_target_debug ();
772 /* Push a new target type into the stack of the existing target accessors,
773 possibly superseding some of the existing accessors.
775 Rather than allow an empty stack, we always have the dummy target at
776 the bottom stratum, so we can call the function vectors without
780 push_target (struct target_ops *t)
782 struct target_ops **cur;
784 /* Check magic number. If wrong, it probably means someone changed
785 the struct definition, but not all the places that initialize one. */
786 if (t->to_magic != OPS_MAGIC)
788 fprintf_unfiltered (gdb_stderr,
789 "Magic number of %s target struct wrong\n",
791 internal_error (__FILE__, __LINE__,
792 _("failed internal consistency check"));
795 /* Find the proper stratum to install this target in. */
796 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
798 if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum)
802 /* If there's already targets at this stratum, remove them. */
803 /* FIXME: cagney/2003-10-15: I think this should be popping all
804 targets to CUR, and not just those at this stratum level. */
805 while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum)
807 /* There's already something at this stratum level. Close it,
808 and un-hook it from the stack. */
809 struct target_ops *tmp = (*cur);
811 (*cur) = (*cur)->beneath;
816 /* We have removed all targets in our stratum, now add the new one. */
820 update_current_target ();
823 /* Remove a target_ops vector from the stack, wherever it may be.
824 Return how many times it was removed (0 or 1). */
827 unpush_target (struct target_ops *t)
829 struct target_ops **cur;
830 struct target_ops *tmp;
832 if (t->to_stratum == dummy_stratum)
833 internal_error (__FILE__, __LINE__,
834 _("Attempt to unpush the dummy target"));
836 /* Look for the specified target. Note that we assume that a target
837 can only occur once in the target stack. */
839 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
845 /* If we don't find target_ops, quit. Only open targets should be
850 /* Unchain the target. */
852 (*cur) = (*cur)->beneath;
855 update_current_target ();
857 /* Finally close the target. Note we do this after unchaining, so
858 any target method calls from within the target_close
859 implementation don't end up in T anymore. */
866 pop_all_targets_above (enum strata above_stratum)
868 while ((int) (current_target.to_stratum) > (int) above_stratum)
870 if (!unpush_target (target_stack))
872 fprintf_unfiltered (gdb_stderr,
873 "pop_all_targets couldn't find target %s\n",
874 target_stack->to_shortname);
875 internal_error (__FILE__, __LINE__,
876 _("failed internal consistency check"));
883 pop_all_targets (void)
885 pop_all_targets_above (dummy_stratum);
888 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
891 target_is_pushed (struct target_ops *t)
893 struct target_ops **cur;
895 /* Check magic number. If wrong, it probably means someone changed
896 the struct definition, but not all the places that initialize one. */
897 if (t->to_magic != OPS_MAGIC)
899 fprintf_unfiltered (gdb_stderr,
900 "Magic number of %s target struct wrong\n",
902 internal_error (__FILE__, __LINE__,
903 _("failed internal consistency check"));
906 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
913 /* Using the objfile specified in OBJFILE, find the address for the
914 current thread's thread-local storage with offset OFFSET. */
916 target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset)
918 volatile CORE_ADDR addr = 0;
919 struct target_ops *target;
921 for (target = current_target.beneath;
923 target = target->beneath)
925 if (target->to_get_thread_local_address != NULL)
930 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
932 ptid_t ptid = inferior_ptid;
933 volatile struct gdb_exception ex;
935 TRY_CATCH (ex, RETURN_MASK_ALL)
939 /* Fetch the load module address for this objfile. */
940 lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (),
942 /* If it's 0, throw the appropriate exception. */
944 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR,
945 _("TLS load module not found"));
947 addr = target->to_get_thread_local_address (target, ptid,
950 /* If an error occurred, print TLS related messages here. Otherwise,
951 throw the error to some higher catcher. */
954 int objfile_is_library = (objfile->flags & OBJF_SHARED);
958 case TLS_NO_LIBRARY_SUPPORT_ERROR:
959 error (_("Cannot find thread-local variables "
960 "in this thread library."));
962 case TLS_LOAD_MODULE_NOT_FOUND_ERROR:
963 if (objfile_is_library)
964 error (_("Cannot find shared library `%s' in dynamic"
965 " linker's load module list"), objfile_name (objfile));
967 error (_("Cannot find executable file `%s' in dynamic"
968 " linker's load module list"), objfile_name (objfile));
970 case TLS_NOT_ALLOCATED_YET_ERROR:
971 if (objfile_is_library)
972 error (_("The inferior has not yet allocated storage for"
973 " thread-local variables in\n"
974 "the shared library `%s'\n"
976 objfile_name (objfile), target_pid_to_str (ptid));
978 error (_("The inferior has not yet allocated storage for"
979 " thread-local variables in\n"
980 "the executable `%s'\n"
982 objfile_name (objfile), target_pid_to_str (ptid));
984 case TLS_GENERIC_ERROR:
985 if (objfile_is_library)
986 error (_("Cannot find thread-local storage for %s, "
987 "shared library %s:\n%s"),
988 target_pid_to_str (ptid),
989 objfile_name (objfile), ex.message);
991 error (_("Cannot find thread-local storage for %s, "
992 "executable file %s:\n%s"),
993 target_pid_to_str (ptid),
994 objfile_name (objfile), ex.message);
997 throw_exception (ex);
1002 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1003 TLS is an ABI-specific thing. But we don't do that yet. */
1005 error (_("Cannot find thread-local variables on this target"));
1011 target_xfer_status_to_string (enum target_xfer_status err)
1013 #define CASE(X) case X: return #X
1016 CASE(TARGET_XFER_E_IO);
1017 CASE(TARGET_XFER_E_UNAVAILABLE);
1026 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1028 /* target_read_string -- read a null terminated string, up to LEN bytes,
1029 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1030 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1031 is responsible for freeing it. Return the number of bytes successfully
1035 target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop)
1037 int tlen, offset, i;
1041 int buffer_allocated;
1043 unsigned int nbytes_read = 0;
1045 gdb_assert (string);
1047 /* Small for testing. */
1048 buffer_allocated = 4;
1049 buffer = xmalloc (buffer_allocated);
1054 tlen = MIN (len, 4 - (memaddr & 3));
1055 offset = memaddr & 3;
1057 errcode = target_read_memory (memaddr & ~3, buf, sizeof buf);
1060 /* The transfer request might have crossed the boundary to an
1061 unallocated region of memory. Retry the transfer, requesting
1065 errcode = target_read_memory (memaddr, buf, 1);
1070 if (bufptr - buffer + tlen > buffer_allocated)
1074 bytes = bufptr - buffer;
1075 buffer_allocated *= 2;
1076 buffer = xrealloc (buffer, buffer_allocated);
1077 bufptr = buffer + bytes;
1080 for (i = 0; i < tlen; i++)
1082 *bufptr++ = buf[i + offset];
1083 if (buf[i + offset] == '\000')
1085 nbytes_read += i + 1;
1092 nbytes_read += tlen;
1101 struct target_section_table *
1102 target_get_section_table (struct target_ops *target)
1104 struct target_ops *t;
1107 fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n");
1109 for (t = target; t != NULL; t = t->beneath)
1110 if (t->to_get_section_table != NULL)
1111 return (*t->to_get_section_table) (t);
1116 /* Find a section containing ADDR. */
1118 struct target_section *
1119 target_section_by_addr (struct target_ops *target, CORE_ADDR addr)
1121 struct target_section_table *table = target_get_section_table (target);
1122 struct target_section *secp;
1127 for (secp = table->sections; secp < table->sections_end; secp++)
1129 if (addr >= secp->addr && addr < secp->endaddr)
1135 /* Read memory from the live target, even if currently inspecting a
1136 traceframe. The return is the same as that of target_read. */
1138 static enum target_xfer_status
1139 target_read_live_memory (enum target_object object,
1140 ULONGEST memaddr, gdb_byte *myaddr, ULONGEST len,
1141 ULONGEST *xfered_len)
1143 enum target_xfer_status ret;
1144 struct cleanup *cleanup;
1146 /* Switch momentarily out of tfind mode so to access live memory.
1147 Note that this must not clear global state, such as the frame
1148 cache, which must still remain valid for the previous traceframe.
1149 We may be _building_ the frame cache at this point. */
1150 cleanup = make_cleanup_restore_traceframe_number ();
1151 set_traceframe_number (-1);
1153 ret = target_xfer_partial (current_target.beneath, object, NULL,
1154 myaddr, NULL, memaddr, len, xfered_len);
1156 do_cleanups (cleanup);
1160 /* Using the set of read-only target sections of OPS, read live
1161 read-only memory. Note that the actual reads start from the
1162 top-most target again.
1164 For interface/parameters/return description see target.h,
1167 static enum target_xfer_status
1168 memory_xfer_live_readonly_partial (struct target_ops *ops,
1169 enum target_object object,
1170 gdb_byte *readbuf, ULONGEST memaddr,
1171 ULONGEST len, ULONGEST *xfered_len)
1173 struct target_section *secp;
1174 struct target_section_table *table;
1176 secp = target_section_by_addr (ops, memaddr);
1178 && (bfd_get_section_flags (secp->the_bfd_section->owner,
1179 secp->the_bfd_section)
1182 struct target_section *p;
1183 ULONGEST memend = memaddr + len;
1185 table = target_get_section_table (ops);
1187 for (p = table->sections; p < table->sections_end; p++)
1189 if (memaddr >= p->addr)
1191 if (memend <= p->endaddr)
1193 /* Entire transfer is within this section. */
1194 return target_read_live_memory (object, memaddr,
1195 readbuf, len, xfered_len);
1197 else if (memaddr >= p->endaddr)
1199 /* This section ends before the transfer starts. */
1204 /* This section overlaps the transfer. Just do half. */
1205 len = p->endaddr - memaddr;
1206 return target_read_live_memory (object, memaddr,
1207 readbuf, len, xfered_len);
1213 return TARGET_XFER_EOF;
1216 /* Read memory from more than one valid target. A core file, for
1217 instance, could have some of memory but delegate other bits to
1218 the target below it. So, we must manually try all targets. */
1220 static enum target_xfer_status
1221 raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf,
1222 const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len,
1223 ULONGEST *xfered_len)
1225 enum target_xfer_status res;
1229 res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL,
1230 readbuf, writebuf, memaddr, len,
1232 if (res == TARGET_XFER_OK)
1235 /* Stop if the target reports that the memory is not available. */
1236 if (res == TARGET_XFER_E_UNAVAILABLE)
1239 /* We want to continue past core files to executables, but not
1240 past a running target's memory. */
1241 if (ops->to_has_all_memory (ops))
1246 while (ops != NULL);
1251 /* Perform a partial memory transfer.
1252 For docs see target.h, to_xfer_partial. */
1254 static enum target_xfer_status
1255 memory_xfer_partial_1 (struct target_ops *ops, enum target_object object,
1256 gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr,
1257 ULONGEST len, ULONGEST *xfered_len)
1259 enum target_xfer_status res;
1261 struct mem_region *region;
1262 struct inferior *inf;
1264 /* For accesses to unmapped overlay sections, read directly from
1265 files. Must do this first, as MEMADDR may need adjustment. */
1266 if (readbuf != NULL && overlay_debugging)
1268 struct obj_section *section = find_pc_overlay (memaddr);
1270 if (pc_in_unmapped_range (memaddr, section))
1272 struct target_section_table *table
1273 = target_get_section_table (ops);
1274 const char *section_name = section->the_bfd_section->name;
1276 memaddr = overlay_mapped_address (memaddr, section);
1277 return section_table_xfer_memory_partial (readbuf, writebuf,
1278 memaddr, len, xfered_len,
1280 table->sections_end,
1285 /* Try the executable files, if "trust-readonly-sections" is set. */
1286 if (readbuf != NULL && trust_readonly)
1288 struct target_section *secp;
1289 struct target_section_table *table;
1291 secp = target_section_by_addr (ops, memaddr);
1293 && (bfd_get_section_flags (secp->the_bfd_section->owner,
1294 secp->the_bfd_section)
1297 table = target_get_section_table (ops);
1298 return section_table_xfer_memory_partial (readbuf, writebuf,
1299 memaddr, len, xfered_len,
1301 table->sections_end,
1306 /* If reading unavailable memory in the context of traceframes, and
1307 this address falls within a read-only section, fallback to
1308 reading from live memory. */
1309 if (readbuf != NULL && get_traceframe_number () != -1)
1311 VEC(mem_range_s) *available;
1313 /* If we fail to get the set of available memory, then the
1314 target does not support querying traceframe info, and so we
1315 attempt reading from the traceframe anyway (assuming the
1316 target implements the old QTro packet then). */
1317 if (traceframe_available_memory (&available, memaddr, len))
1319 struct cleanup *old_chain;
1321 old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available);
1323 if (VEC_empty (mem_range_s, available)
1324 || VEC_index (mem_range_s, available, 0)->start != memaddr)
1326 /* Don't read into the traceframe's available
1328 if (!VEC_empty (mem_range_s, available))
1330 LONGEST oldlen = len;
1332 len = VEC_index (mem_range_s, available, 0)->start - memaddr;
1333 gdb_assert (len <= oldlen);
1336 do_cleanups (old_chain);
1338 /* This goes through the topmost target again. */
1339 res = memory_xfer_live_readonly_partial (ops, object,
1342 if (res == TARGET_XFER_OK)
1343 return TARGET_XFER_OK;
1346 /* No use trying further, we know some memory starting
1347 at MEMADDR isn't available. */
1349 return TARGET_XFER_E_UNAVAILABLE;
1353 /* Don't try to read more than how much is available, in
1354 case the target implements the deprecated QTro packet to
1355 cater for older GDBs (the target's knowledge of read-only
1356 sections may be outdated by now). */
1357 len = VEC_index (mem_range_s, available, 0)->length;
1359 do_cleanups (old_chain);
1363 /* Try GDB's internal data cache. */
1364 region = lookup_mem_region (memaddr);
1365 /* region->hi == 0 means there's no upper bound. */
1366 if (memaddr + len < region->hi || region->hi == 0)
1369 reg_len = region->hi - memaddr;
1371 switch (region->attrib.mode)
1374 if (writebuf != NULL)
1375 return TARGET_XFER_E_IO;
1379 if (readbuf != NULL)
1380 return TARGET_XFER_E_IO;
1384 /* We only support writing to flash during "load" for now. */
1385 if (writebuf != NULL)
1386 error (_("Writing to flash memory forbidden in this context"));
1390 return TARGET_XFER_E_IO;
1393 if (!ptid_equal (inferior_ptid, null_ptid))
1394 inf = find_inferior_pid (ptid_get_pid (inferior_ptid));
1399 /* The dcache reads whole cache lines; that doesn't play well
1400 with reading from a trace buffer, because reading outside of
1401 the collected memory range fails. */
1402 && get_traceframe_number () == -1
1403 && (region->attrib.cache
1404 || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY)
1405 || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY)))
1407 DCACHE *dcache = target_dcache_get_or_init ();
1410 if (readbuf != NULL)
1411 l = dcache_xfer_memory (ops, dcache, memaddr, readbuf, reg_len, 0);
1413 /* FIXME drow/2006-08-09: If we're going to preserve const
1414 correctness dcache_xfer_memory should take readbuf and
1416 l = dcache_xfer_memory (ops, dcache, memaddr, (void *) writebuf,
1419 return TARGET_XFER_E_IO;
1422 *xfered_len = (ULONGEST) l;
1423 return TARGET_XFER_OK;
1427 /* If none of those methods found the memory we wanted, fall back
1428 to a target partial transfer. Normally a single call to
1429 to_xfer_partial is enough; if it doesn't recognize an object
1430 it will call the to_xfer_partial of the next target down.
1431 But for memory this won't do. Memory is the only target
1432 object which can be read from more than one valid target.
1433 A core file, for instance, could have some of memory but
1434 delegate other bits to the target below it. So, we must
1435 manually try all targets. */
1437 res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len,
1440 /* Make sure the cache gets updated no matter what - if we are writing
1441 to the stack. Even if this write is not tagged as such, we still need
1442 to update the cache. */
1444 if (res == TARGET_XFER_OK
1447 && target_dcache_init_p ()
1448 && !region->attrib.cache
1449 && ((stack_cache_enabled_p () && object != TARGET_OBJECT_STACK_MEMORY)
1450 || (code_cache_enabled_p () && object != TARGET_OBJECT_CODE_MEMORY)))
1452 DCACHE *dcache = target_dcache_get ();
1454 dcache_update (dcache, memaddr, (void *) writebuf, reg_len);
1457 /* If we still haven't got anything, return the last error. We
1462 /* Perform a partial memory transfer. For docs see target.h,
1465 static enum target_xfer_status
1466 memory_xfer_partial (struct target_ops *ops, enum target_object object,
1467 gdb_byte *readbuf, const gdb_byte *writebuf,
1468 ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len)
1470 enum target_xfer_status res;
1472 /* Zero length requests are ok and require no work. */
1474 return TARGET_XFER_EOF;
1476 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1477 breakpoint insns, thus hiding out from higher layers whether
1478 there are software breakpoints inserted in the code stream. */
1479 if (readbuf != NULL)
1481 res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len,
1484 if (res == TARGET_XFER_OK && !show_memory_breakpoints)
1485 breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, res);
1490 struct cleanup *old_chain;
1492 /* A large write request is likely to be partially satisfied
1493 by memory_xfer_partial_1. We will continually malloc
1494 and free a copy of the entire write request for breakpoint
1495 shadow handling even though we only end up writing a small
1496 subset of it. Cap writes to 4KB to mitigate this. */
1497 len = min (4096, len);
1499 buf = xmalloc (len);
1500 old_chain = make_cleanup (xfree, buf);
1501 memcpy (buf, writebuf, len);
1503 breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len);
1504 res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len,
1507 do_cleanups (old_chain);
1514 restore_show_memory_breakpoints (void *arg)
1516 show_memory_breakpoints = (uintptr_t) arg;
1520 make_show_memory_breakpoints_cleanup (int show)
1522 int current = show_memory_breakpoints;
1524 show_memory_breakpoints = show;
1525 return make_cleanup (restore_show_memory_breakpoints,
1526 (void *) (uintptr_t) current);
1529 /* For docs see target.h, to_xfer_partial. */
1531 enum target_xfer_status
1532 target_xfer_partial (struct target_ops *ops,
1533 enum target_object object, const char *annex,
1534 gdb_byte *readbuf, const gdb_byte *writebuf,
1535 ULONGEST offset, ULONGEST len,
1536 ULONGEST *xfered_len)
1538 enum target_xfer_status retval;
1540 gdb_assert (ops->to_xfer_partial != NULL);
1542 /* Transfer is done when LEN is zero. */
1544 return TARGET_XFER_EOF;
1546 if (writebuf && !may_write_memory)
1547 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1548 core_addr_to_string_nz (offset), plongest (len));
1552 /* If this is a memory transfer, let the memory-specific code
1553 have a look at it instead. Memory transfers are more
1555 if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY
1556 || object == TARGET_OBJECT_CODE_MEMORY)
1557 retval = memory_xfer_partial (ops, object, readbuf,
1558 writebuf, offset, len, xfered_len);
1559 else if (object == TARGET_OBJECT_RAW_MEMORY)
1561 /* Request the normal memory object from other layers. */
1562 retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len,
1566 retval = ops->to_xfer_partial (ops, object, annex, readbuf,
1567 writebuf, offset, len, xfered_len);
1571 const unsigned char *myaddr = NULL;
1573 fprintf_unfiltered (gdb_stdlog,
1574 "%s:target_xfer_partial "
1575 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1578 (annex ? annex : "(null)"),
1579 host_address_to_string (readbuf),
1580 host_address_to_string (writebuf),
1581 core_addr_to_string_nz (offset),
1582 pulongest (len), retval,
1583 pulongest (*xfered_len));
1589 if (retval == TARGET_XFER_OK && myaddr != NULL)
1593 fputs_unfiltered (", bytes =", gdb_stdlog);
1594 for (i = 0; i < *xfered_len; i++)
1596 if ((((intptr_t) &(myaddr[i])) & 0xf) == 0)
1598 if (targetdebug < 2 && i > 0)
1600 fprintf_unfiltered (gdb_stdlog, " ...");
1603 fprintf_unfiltered (gdb_stdlog, "\n");
1606 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
1610 fputc_unfiltered ('\n', gdb_stdlog);
1613 /* Check implementations of to_xfer_partial update *XFERED_LEN
1614 properly. Do assertion after printing debug messages, so that we
1615 can find more clues on assertion failure from debugging messages. */
1616 if (retval == TARGET_XFER_OK || retval == TARGET_XFER_E_UNAVAILABLE)
1617 gdb_assert (*xfered_len > 0);
1622 /* Read LEN bytes of target memory at address MEMADDR, placing the
1623 results in GDB's memory at MYADDR. Returns either 0 for success or
1624 TARGET_XFER_E_IO if any error occurs.
1626 If an error occurs, no guarantee is made about the contents of the data at
1627 MYADDR. In particular, the caller should not depend upon partial reads
1628 filling the buffer with good data. There is no way for the caller to know
1629 how much good data might have been transfered anyway. Callers that can
1630 deal with partial reads should call target_read (which will retry until
1631 it makes no progress, and then return how much was transferred). */
1634 target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1636 /* Dispatch to the topmost target, not the flattened current_target.
1637 Memory accesses check target->to_has_(all_)memory, and the
1638 flattened target doesn't inherit those. */
1639 if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL,
1640 myaddr, memaddr, len) == len)
1643 return TARGET_XFER_E_IO;
1646 /* Like target_read_memory, but specify explicitly that this is a read
1647 from the target's raw memory. That is, this read bypasses the
1648 dcache, breakpoint shadowing, etc. */
1651 target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1653 /* See comment in target_read_memory about why the request starts at
1654 current_target.beneath. */
1655 if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL,
1656 myaddr, memaddr, len) == len)
1659 return TARGET_XFER_E_IO;
1662 /* Like target_read_memory, but specify explicitly that this is a read from
1663 the target's stack. This may trigger different cache behavior. */
1666 target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1668 /* See comment in target_read_memory about why the request starts at
1669 current_target.beneath. */
1670 if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL,
1671 myaddr, memaddr, len) == len)
1674 return TARGET_XFER_E_IO;
1677 /* Like target_read_memory, but specify explicitly that this is a read from
1678 the target's code. This may trigger different cache behavior. */
1681 target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1683 /* See comment in target_read_memory about why the request starts at
1684 current_target.beneath. */
1685 if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL,
1686 myaddr, memaddr, len) == len)
1689 return TARGET_XFER_E_IO;
1692 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1693 Returns either 0 for success or TARGET_XFER_E_IO if any
1694 error occurs. If an error occurs, no guarantee is made about how
1695 much data got written. Callers that can deal with partial writes
1696 should call target_write. */
1699 target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
1701 /* See comment in target_read_memory about why the request starts at
1702 current_target.beneath. */
1703 if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL,
1704 myaddr, memaddr, len) == len)
1707 return TARGET_XFER_E_IO;
1710 /* Write LEN bytes from MYADDR to target raw memory at address
1711 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1712 if any error occurs. If an error occurs, no guarantee is made
1713 about how much data got written. Callers that can deal with
1714 partial writes should call target_write. */
1717 target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
1719 /* See comment in target_read_memory about why the request starts at
1720 current_target.beneath. */
1721 if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL,
1722 myaddr, memaddr, len) == len)
1725 return TARGET_XFER_E_IO;
1728 /* Fetch the target's memory map. */
1731 target_memory_map (void)
1733 VEC(mem_region_s) *result;
1734 struct mem_region *last_one, *this_one;
1736 struct target_ops *t;
1739 fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n");
1741 for (t = current_target.beneath; t != NULL; t = t->beneath)
1742 if (t->to_memory_map != NULL)
1748 result = t->to_memory_map (t);
1752 qsort (VEC_address (mem_region_s, result),
1753 VEC_length (mem_region_s, result),
1754 sizeof (struct mem_region), mem_region_cmp);
1756 /* Check that regions do not overlap. Simultaneously assign
1757 a numbering for the "mem" commands to use to refer to
1760 for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++)
1762 this_one->number = ix;
1764 if (last_one && last_one->hi > this_one->lo)
1766 warning (_("Overlapping regions in memory map: ignoring"));
1767 VEC_free (mem_region_s, result);
1770 last_one = this_one;
1777 target_flash_erase (ULONGEST address, LONGEST length)
1779 struct target_ops *t;
1781 for (t = current_target.beneath; t != NULL; t = t->beneath)
1782 if (t->to_flash_erase != NULL)
1785 fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n",
1786 hex_string (address), phex (length, 0));
1787 t->to_flash_erase (t, address, length);
1795 target_flash_done (void)
1797 struct target_ops *t;
1799 for (t = current_target.beneath; t != NULL; t = t->beneath)
1800 if (t->to_flash_done != NULL)
1803 fprintf_unfiltered (gdb_stdlog, "target_flash_done\n");
1804 t->to_flash_done (t);
1812 show_trust_readonly (struct ui_file *file, int from_tty,
1813 struct cmd_list_element *c, const char *value)
1815 fprintf_filtered (file,
1816 _("Mode for reading from readonly sections is %s.\n"),
1820 /* More generic transfers. */
1822 static enum target_xfer_status
1823 default_xfer_partial (struct target_ops *ops, enum target_object object,
1824 const char *annex, gdb_byte *readbuf,
1825 const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
1826 ULONGEST *xfered_len)
1828 if (object == TARGET_OBJECT_MEMORY
1829 && ops->deprecated_xfer_memory != NULL)
1830 /* If available, fall back to the target's
1831 "deprecated_xfer_memory" method. */
1836 if (writebuf != NULL)
1838 void *buffer = xmalloc (len);
1839 struct cleanup *cleanup = make_cleanup (xfree, buffer);
1841 memcpy (buffer, writebuf, len);
1842 xfered = ops->deprecated_xfer_memory (offset, buffer, len,
1843 1/*write*/, NULL, ops);
1844 do_cleanups (cleanup);
1846 if (readbuf != NULL)
1847 xfered = ops->deprecated_xfer_memory (offset, readbuf, len,
1848 0/*read*/, NULL, ops);
1851 *xfered_len = (ULONGEST) xfered;
1852 return TARGET_XFER_E_IO;
1854 else if (xfered == 0 && errno == 0)
1855 /* "deprecated_xfer_memory" uses 0, cross checked against
1856 ERRNO as one indication of an error. */
1857 return TARGET_XFER_EOF;
1859 return TARGET_XFER_E_IO;
1863 gdb_assert (ops->beneath != NULL);
1864 return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
1865 readbuf, writebuf, offset, len,
1870 /* Target vector read/write partial wrapper functions. */
1872 static enum target_xfer_status
1873 target_read_partial (struct target_ops *ops,
1874 enum target_object object,
1875 const char *annex, gdb_byte *buf,
1876 ULONGEST offset, ULONGEST len,
1877 ULONGEST *xfered_len)
1879 return target_xfer_partial (ops, object, annex, buf, NULL, offset, len,
1883 static enum target_xfer_status
1884 target_write_partial (struct target_ops *ops,
1885 enum target_object object,
1886 const char *annex, const gdb_byte *buf,
1887 ULONGEST offset, LONGEST len, ULONGEST *xfered_len)
1889 return target_xfer_partial (ops, object, annex, NULL, buf, offset, len,
1893 /* Wrappers to perform the full transfer. */
1895 /* For docs on target_read see target.h. */
1898 target_read (struct target_ops *ops,
1899 enum target_object object,
1900 const char *annex, gdb_byte *buf,
1901 ULONGEST offset, LONGEST len)
1905 while (xfered < len)
1907 ULONGEST xfered_len;
1908 enum target_xfer_status status;
1910 status = target_read_partial (ops, object, annex,
1911 (gdb_byte *) buf + xfered,
1912 offset + xfered, len - xfered,
1915 /* Call an observer, notifying them of the xfer progress? */
1916 if (status == TARGET_XFER_EOF)
1918 else if (status == TARGET_XFER_OK)
1920 xfered += xfered_len;
1930 /* Assuming that the entire [begin, end) range of memory cannot be
1931 read, try to read whatever subrange is possible to read.
1933 The function returns, in RESULT, either zero or one memory block.
1934 If there's a readable subrange at the beginning, it is completely
1935 read and returned. Any further readable subrange will not be read.
1936 Otherwise, if there's a readable subrange at the end, it will be
1937 completely read and returned. Any readable subranges before it
1938 (obviously, not starting at the beginning), will be ignored. In
1939 other cases -- either no readable subrange, or readable subrange(s)
1940 that is neither at the beginning, or end, nothing is returned.
1942 The purpose of this function is to handle a read across a boundary
1943 of accessible memory in a case when memory map is not available.
1944 The above restrictions are fine for this case, but will give
1945 incorrect results if the memory is 'patchy'. However, supporting
1946 'patchy' memory would require trying to read every single byte,
1947 and it seems unacceptable solution. Explicit memory map is
1948 recommended for this case -- and target_read_memory_robust will
1949 take care of reading multiple ranges then. */
1952 read_whatever_is_readable (struct target_ops *ops,
1953 ULONGEST begin, ULONGEST end,
1954 VEC(memory_read_result_s) **result)
1956 gdb_byte *buf = xmalloc (end - begin);
1957 ULONGEST current_begin = begin;
1958 ULONGEST current_end = end;
1960 memory_read_result_s r;
1961 ULONGEST xfered_len;
1963 /* If we previously failed to read 1 byte, nothing can be done here. */
1964 if (end - begin <= 1)
1970 /* Check that either first or the last byte is readable, and give up
1971 if not. This heuristic is meant to permit reading accessible memory
1972 at the boundary of accessible region. */
1973 if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL,
1974 buf, begin, 1, &xfered_len) == TARGET_XFER_OK)
1979 else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL,
1980 buf + (end-begin) - 1, end - 1, 1,
1981 &xfered_len) == TARGET_XFER_OK)
1992 /* Loop invariant is that the [current_begin, current_end) was previously
1993 found to be not readable as a whole.
1995 Note loop condition -- if the range has 1 byte, we can't divide the range
1996 so there's no point trying further. */
1997 while (current_end - current_begin > 1)
1999 ULONGEST first_half_begin, first_half_end;
2000 ULONGEST second_half_begin, second_half_end;
2002 ULONGEST middle = current_begin + (current_end - current_begin)/2;
2006 first_half_begin = current_begin;
2007 first_half_end = middle;
2008 second_half_begin = middle;
2009 second_half_end = current_end;
2013 first_half_begin = middle;
2014 first_half_end = current_end;
2015 second_half_begin = current_begin;
2016 second_half_end = middle;
2019 xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2020 buf + (first_half_begin - begin),
2022 first_half_end - first_half_begin);
2024 if (xfer == first_half_end - first_half_begin)
2026 /* This half reads up fine. So, the error must be in the
2028 current_begin = second_half_begin;
2029 current_end = second_half_end;
2033 /* This half is not readable. Because we've tried one byte, we
2034 know some part of this half if actually redable. Go to the next
2035 iteration to divide again and try to read.
2037 We don't handle the other half, because this function only tries
2038 to read a single readable subrange. */
2039 current_begin = first_half_begin;
2040 current_end = first_half_end;
2046 /* The [begin, current_begin) range has been read. */
2048 r.end = current_begin;
2053 /* The [current_end, end) range has been read. */
2054 LONGEST rlen = end - current_end;
2056 r.data = xmalloc (rlen);
2057 memcpy (r.data, buf + current_end - begin, rlen);
2058 r.begin = current_end;
2062 VEC_safe_push(memory_read_result_s, (*result), &r);
2066 free_memory_read_result_vector (void *x)
2068 VEC(memory_read_result_s) *v = x;
2069 memory_read_result_s *current;
2072 for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix)
2074 xfree (current->data);
2076 VEC_free (memory_read_result_s, v);
2079 VEC(memory_read_result_s) *
2080 read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len)
2082 VEC(memory_read_result_s) *result = 0;
2085 while (xfered < len)
2087 struct mem_region *region = lookup_mem_region (offset + xfered);
2090 /* If there is no explicit region, a fake one should be created. */
2091 gdb_assert (region);
2093 if (region->hi == 0)
2094 rlen = len - xfered;
2096 rlen = region->hi - offset;
2098 if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO)
2100 /* Cannot read this region. Note that we can end up here only
2101 if the region is explicitly marked inaccessible, or
2102 'inaccessible-by-default' is in effect. */
2107 LONGEST to_read = min (len - xfered, rlen);
2108 gdb_byte *buffer = (gdb_byte *)xmalloc (to_read);
2110 LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2111 (gdb_byte *) buffer,
2112 offset + xfered, to_read);
2113 /* Call an observer, notifying them of the xfer progress? */
2116 /* Got an error reading full chunk. See if maybe we can read
2119 read_whatever_is_readable (ops, offset + xfered,
2120 offset + xfered + to_read, &result);
2125 struct memory_read_result r;
2127 r.begin = offset + xfered;
2128 r.end = r.begin + xfer;
2129 VEC_safe_push (memory_read_result_s, result, &r);
2139 /* An alternative to target_write with progress callbacks. */
2142 target_write_with_progress (struct target_ops *ops,
2143 enum target_object object,
2144 const char *annex, const gdb_byte *buf,
2145 ULONGEST offset, LONGEST len,
2146 void (*progress) (ULONGEST, void *), void *baton)
2150 /* Give the progress callback a chance to set up. */
2152 (*progress) (0, baton);
2154 while (xfered < len)
2156 ULONGEST xfered_len;
2157 enum target_xfer_status status;
2159 status = target_write_partial (ops, object, annex,
2160 (gdb_byte *) buf + xfered,
2161 offset + xfered, len - xfered,
2164 if (status == TARGET_XFER_EOF)
2166 if (TARGET_XFER_STATUS_ERROR_P (status))
2169 gdb_assert (status == TARGET_XFER_OK);
2171 (*progress) (xfered_len, baton);
2173 xfered += xfered_len;
2179 /* For docs on target_write see target.h. */
2182 target_write (struct target_ops *ops,
2183 enum target_object object,
2184 const char *annex, const gdb_byte *buf,
2185 ULONGEST offset, LONGEST len)
2187 return target_write_with_progress (ops, object, annex, buf, offset, len,
2191 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2192 the size of the transferred data. PADDING additional bytes are
2193 available in *BUF_P. This is a helper function for
2194 target_read_alloc; see the declaration of that function for more
2198 target_read_alloc_1 (struct target_ops *ops, enum target_object object,
2199 const char *annex, gdb_byte **buf_p, int padding)
2201 size_t buf_alloc, buf_pos;
2204 /* This function does not have a length parameter; it reads the
2205 entire OBJECT). Also, it doesn't support objects fetched partly
2206 from one target and partly from another (in a different stratum,
2207 e.g. a core file and an executable). Both reasons make it
2208 unsuitable for reading memory. */
2209 gdb_assert (object != TARGET_OBJECT_MEMORY);
2211 /* Start by reading up to 4K at a time. The target will throttle
2212 this number down if necessary. */
2214 buf = xmalloc (buf_alloc);
2218 ULONGEST xfered_len;
2219 enum target_xfer_status status;
2221 status = target_read_partial (ops, object, annex, &buf[buf_pos],
2222 buf_pos, buf_alloc - buf_pos - padding,
2225 if (status == TARGET_XFER_EOF)
2227 /* Read all there was. */
2234 else if (status != TARGET_XFER_OK)
2236 /* An error occurred. */
2238 return TARGET_XFER_E_IO;
2241 buf_pos += xfered_len;
2243 /* If the buffer is filling up, expand it. */
2244 if (buf_alloc < buf_pos * 2)
2247 buf = xrealloc (buf, buf_alloc);
2254 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2255 the size of the transferred data. See the declaration in "target.h"
2256 function for more information about the return value. */
2259 target_read_alloc (struct target_ops *ops, enum target_object object,
2260 const char *annex, gdb_byte **buf_p)
2262 return target_read_alloc_1 (ops, object, annex, buf_p, 0);
2265 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2266 returned as a string, allocated using xmalloc. If an error occurs
2267 or the transfer is unsupported, NULL is returned. Empty objects
2268 are returned as allocated but empty strings. A warning is issued
2269 if the result contains any embedded NUL bytes. */
2272 target_read_stralloc (struct target_ops *ops, enum target_object object,
2277 LONGEST i, transferred;
2279 transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1);
2280 bufstr = (char *) buffer;
2282 if (transferred < 0)
2285 if (transferred == 0)
2286 return xstrdup ("");
2288 bufstr[transferred] = 0;
2290 /* Check for embedded NUL bytes; but allow trailing NULs. */
2291 for (i = strlen (bufstr); i < transferred; i++)
2294 warning (_("target object %d, annex %s, "
2295 "contained unexpected null characters"),
2296 (int) object, annex ? annex : "(none)");
2303 /* Memory transfer methods. */
2306 get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf,
2309 /* This method is used to read from an alternate, non-current
2310 target. This read must bypass the overlay support (as symbols
2311 don't match this target), and GDB's internal cache (wrong cache
2312 for this target). */
2313 if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len)
2315 memory_error (TARGET_XFER_E_IO, addr);
2319 get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr,
2320 int len, enum bfd_endian byte_order)
2322 gdb_byte buf[sizeof (ULONGEST)];
2324 gdb_assert (len <= sizeof (buf));
2325 get_target_memory (ops, addr, buf, len);
2326 return extract_unsigned_integer (buf, len, byte_order);
2332 target_insert_breakpoint (struct gdbarch *gdbarch,
2333 struct bp_target_info *bp_tgt)
2335 if (!may_insert_breakpoints)
2337 warning (_("May not insert breakpoints"));
2341 return current_target.to_insert_breakpoint (¤t_target,
2348 target_remove_breakpoint (struct gdbarch *gdbarch,
2349 struct bp_target_info *bp_tgt)
2351 /* This is kind of a weird case to handle, but the permission might
2352 have been changed after breakpoints were inserted - in which case
2353 we should just take the user literally and assume that any
2354 breakpoints should be left in place. */
2355 if (!may_insert_breakpoints)
2357 warning (_("May not remove breakpoints"));
2361 return current_target.to_remove_breakpoint (¤t_target,
2366 target_info (char *args, int from_tty)
2368 struct target_ops *t;
2369 int has_all_mem = 0;
2371 if (symfile_objfile != NULL)
2372 printf_unfiltered (_("Symbols from \"%s\".\n"),
2373 objfile_name (symfile_objfile));
2375 for (t = target_stack; t != NULL; t = t->beneath)
2377 if (!(*t->to_has_memory) (t))
2380 if ((int) (t->to_stratum) <= (int) dummy_stratum)
2383 printf_unfiltered (_("\tWhile running this, "
2384 "GDB does not access memory from...\n"));
2385 printf_unfiltered ("%s:\n", t->to_longname);
2386 (t->to_files_info) (t);
2387 has_all_mem = (*t->to_has_all_memory) (t);
2391 /* This function is called before any new inferior is created, e.g.
2392 by running a program, attaching, or connecting to a target.
2393 It cleans up any state from previous invocations which might
2394 change between runs. This is a subset of what target_preopen
2395 resets (things which might change between targets). */
2398 target_pre_inferior (int from_tty)
2400 /* Clear out solib state. Otherwise the solib state of the previous
2401 inferior might have survived and is entirely wrong for the new
2402 target. This has been observed on GNU/Linux using glibc 2.3. How
2414 Cannot access memory at address 0xdeadbeef
2417 /* In some OSs, the shared library list is the same/global/shared
2418 across inferiors. If code is shared between processes, so are
2419 memory regions and features. */
2420 if (!gdbarch_has_global_solist (target_gdbarch ()))
2422 no_shared_libraries (NULL, from_tty);
2424 invalidate_target_mem_regions ();
2426 target_clear_description ();
2429 agent_capability_invalidate ();
2432 /* Callback for iterate_over_inferiors. Gets rid of the given
2436 dispose_inferior (struct inferior *inf, void *args)
2438 struct thread_info *thread;
2440 thread = any_thread_of_process (inf->pid);
2443 switch_to_thread (thread->ptid);
2445 /* Core inferiors actually should be detached, not killed. */
2446 if (target_has_execution)
2449 target_detach (NULL, 0);
2455 /* This is to be called by the open routine before it does
2459 target_preopen (int from_tty)
2463 if (have_inferiors ())
2466 || !have_live_inferiors ()
2467 || query (_("A program is being debugged already. Kill it? ")))
2468 iterate_over_inferiors (dispose_inferior, NULL);
2470 error (_("Program not killed."));
2473 /* Calling target_kill may remove the target from the stack. But if
2474 it doesn't (which seems like a win for UDI), remove it now. */
2475 /* Leave the exec target, though. The user may be switching from a
2476 live process to a core of the same program. */
2477 pop_all_targets_above (file_stratum);
2479 target_pre_inferior (from_tty);
2482 /* Detach a target after doing deferred register stores. */
2485 target_detach (const char *args, int from_tty)
2487 struct target_ops* t;
2489 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2490 /* Don't remove global breakpoints here. They're removed on
2491 disconnection from the target. */
2494 /* If we're in breakpoints-always-inserted mode, have to remove
2495 them before detaching. */
2496 remove_breakpoints_pid (ptid_get_pid (inferior_ptid));
2498 prepare_for_detach ();
2500 current_target.to_detach (¤t_target, args, from_tty);
2502 fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n",
2507 target_disconnect (char *args, int from_tty)
2509 struct target_ops *t;
2511 /* If we're in breakpoints-always-inserted mode or if breakpoints
2512 are global across processes, we have to remove them before
2514 remove_breakpoints ();
2516 for (t = current_target.beneath; t != NULL; t = t->beneath)
2517 if (t->to_disconnect != NULL)
2520 fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n",
2522 t->to_disconnect (t, args, from_tty);
2530 target_wait (ptid_t ptid, struct target_waitstatus *status, int options)
2532 struct target_ops *t;
2533 ptid_t retval = (current_target.to_wait) (¤t_target, ptid,
2538 char *status_string;
2539 char *options_string;
2541 status_string = target_waitstatus_to_string (status);
2542 options_string = target_options_to_string (options);
2543 fprintf_unfiltered (gdb_stdlog,
2544 "target_wait (%d, status, options={%s})"
2546 ptid_get_pid (ptid), options_string,
2547 ptid_get_pid (retval), status_string);
2548 xfree (status_string);
2549 xfree (options_string);
2556 target_pid_to_str (ptid_t ptid)
2558 struct target_ops *t;
2560 for (t = current_target.beneath; t != NULL; t = t->beneath)
2562 if (t->to_pid_to_str != NULL)
2563 return (*t->to_pid_to_str) (t, ptid);
2566 return normal_pid_to_str (ptid);
2570 target_thread_name (struct thread_info *info)
2572 return current_target.to_thread_name (¤t_target, info);
2576 target_resume (ptid_t ptid, int step, enum gdb_signal signal)
2578 struct target_ops *t;
2580 target_dcache_invalidate ();
2582 current_target.to_resume (¤t_target, ptid, step, signal);
2584 fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n",
2585 ptid_get_pid (ptid),
2586 step ? "step" : "continue",
2587 gdb_signal_to_name (signal));
2589 registers_changed_ptid (ptid);
2590 set_executing (ptid, 1);
2591 set_running (ptid, 1);
2592 clear_inline_frame_state (ptid);
2596 target_pass_signals (int numsigs, unsigned char *pass_signals)
2598 struct target_ops *t;
2600 for (t = current_target.beneath; t != NULL; t = t->beneath)
2602 if (t->to_pass_signals != NULL)
2608 fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {",
2611 for (i = 0; i < numsigs; i++)
2612 if (pass_signals[i])
2613 fprintf_unfiltered (gdb_stdlog, " %s",
2614 gdb_signal_to_name (i));
2616 fprintf_unfiltered (gdb_stdlog, " })\n");
2619 (*t->to_pass_signals) (t, numsigs, pass_signals);
2626 target_program_signals (int numsigs, unsigned char *program_signals)
2628 struct target_ops *t;
2630 for (t = current_target.beneath; t != NULL; t = t->beneath)
2632 if (t->to_program_signals != NULL)
2638 fprintf_unfiltered (gdb_stdlog, "target_program_signals (%d, {",
2641 for (i = 0; i < numsigs; i++)
2642 if (program_signals[i])
2643 fprintf_unfiltered (gdb_stdlog, " %s",
2644 gdb_signal_to_name (i));
2646 fprintf_unfiltered (gdb_stdlog, " })\n");
2649 (*t->to_program_signals) (t, numsigs, program_signals);
2655 /* Look through the list of possible targets for a target that can
2659 target_follow_fork (int follow_child, int detach_fork)
2661 struct target_ops *t;
2663 for (t = current_target.beneath; t != NULL; t = t->beneath)
2665 if (t->to_follow_fork != NULL)
2667 int retval = t->to_follow_fork (t, follow_child, detach_fork);
2670 fprintf_unfiltered (gdb_stdlog,
2671 "target_follow_fork (%d, %d) = %d\n",
2672 follow_child, detach_fork, retval);
2677 /* Some target returned a fork event, but did not know how to follow it. */
2678 internal_error (__FILE__, __LINE__,
2679 _("could not find a target to follow fork"));
2683 target_mourn_inferior (void)
2685 struct target_ops *t;
2687 for (t = current_target.beneath; t != NULL; t = t->beneath)
2689 if (t->to_mourn_inferior != NULL)
2691 t->to_mourn_inferior (t);
2693 fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n");
2695 /* We no longer need to keep handles on any of the object files.
2696 Make sure to release them to avoid unnecessarily locking any
2697 of them while we're not actually debugging. */
2698 bfd_cache_close_all ();
2704 internal_error (__FILE__, __LINE__,
2705 _("could not find a target to follow mourn inferior"));
2708 /* Look for a target which can describe architectural features, starting
2709 from TARGET. If we find one, return its description. */
2711 const struct target_desc *
2712 target_read_description (struct target_ops *target)
2714 struct target_ops *t;
2716 for (t = target; t != NULL; t = t->beneath)
2717 if (t->to_read_description != NULL)
2719 const struct target_desc *tdesc;
2721 tdesc = t->to_read_description (t);
2729 /* The default implementation of to_search_memory.
2730 This implements a basic search of memory, reading target memory and
2731 performing the search here (as opposed to performing the search in on the
2732 target side with, for example, gdbserver). */
2735 simple_search_memory (struct target_ops *ops,
2736 CORE_ADDR start_addr, ULONGEST search_space_len,
2737 const gdb_byte *pattern, ULONGEST pattern_len,
2738 CORE_ADDR *found_addrp)
2740 /* NOTE: also defined in find.c testcase. */
2741 #define SEARCH_CHUNK_SIZE 16000
2742 const unsigned chunk_size = SEARCH_CHUNK_SIZE;
2743 /* Buffer to hold memory contents for searching. */
2744 gdb_byte *search_buf;
2745 unsigned search_buf_size;
2746 struct cleanup *old_cleanups;
2748 search_buf_size = chunk_size + pattern_len - 1;
2750 /* No point in trying to allocate a buffer larger than the search space. */
2751 if (search_space_len < search_buf_size)
2752 search_buf_size = search_space_len;
2754 search_buf = malloc (search_buf_size);
2755 if (search_buf == NULL)
2756 error (_("Unable to allocate memory to perform the search."));
2757 old_cleanups = make_cleanup (free_current_contents, &search_buf);
2759 /* Prime the search buffer. */
2761 if (target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2762 search_buf, start_addr, search_buf_size) != search_buf_size)
2764 warning (_("Unable to access %s bytes of target "
2765 "memory at %s, halting search."),
2766 pulongest (search_buf_size), hex_string (start_addr));
2767 do_cleanups (old_cleanups);
2771 /* Perform the search.
2773 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2774 When we've scanned N bytes we copy the trailing bytes to the start and
2775 read in another N bytes. */
2777 while (search_space_len >= pattern_len)
2779 gdb_byte *found_ptr;
2780 unsigned nr_search_bytes = min (search_space_len, search_buf_size);
2782 found_ptr = memmem (search_buf, nr_search_bytes,
2783 pattern, pattern_len);
2785 if (found_ptr != NULL)
2787 CORE_ADDR found_addr = start_addr + (found_ptr - search_buf);
2789 *found_addrp = found_addr;
2790 do_cleanups (old_cleanups);
2794 /* Not found in this chunk, skip to next chunk. */
2796 /* Don't let search_space_len wrap here, it's unsigned. */
2797 if (search_space_len >= chunk_size)
2798 search_space_len -= chunk_size;
2800 search_space_len = 0;
2802 if (search_space_len >= pattern_len)
2804 unsigned keep_len = search_buf_size - chunk_size;
2805 CORE_ADDR read_addr = start_addr + chunk_size + keep_len;
2808 /* Copy the trailing part of the previous iteration to the front
2809 of the buffer for the next iteration. */
2810 gdb_assert (keep_len == pattern_len - 1);
2811 memcpy (search_buf, search_buf + chunk_size, keep_len);
2813 nr_to_read = min (search_space_len - keep_len, chunk_size);
2815 if (target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2816 search_buf + keep_len, read_addr,
2817 nr_to_read) != nr_to_read)
2819 warning (_("Unable to access %s bytes of target "
2820 "memory at %s, halting search."),
2821 plongest (nr_to_read),
2822 hex_string (read_addr));
2823 do_cleanups (old_cleanups);
2827 start_addr += chunk_size;
2833 do_cleanups (old_cleanups);
2837 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2838 sequence of bytes in PATTERN with length PATTERN_LEN.
2840 The result is 1 if found, 0 if not found, and -1 if there was an error
2841 requiring halting of the search (e.g. memory read error).
2842 If the pattern is found the address is recorded in FOUND_ADDRP. */
2845 target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len,
2846 const gdb_byte *pattern, ULONGEST pattern_len,
2847 CORE_ADDR *found_addrp)
2849 struct target_ops *t;
2852 /* We don't use INHERIT to set current_target.to_search_memory,
2853 so we have to scan the target stack and handle targetdebug
2857 fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n",
2858 hex_string (start_addr));
2860 for (t = current_target.beneath; t != NULL; t = t->beneath)
2861 if (t->to_search_memory != NULL)
2866 found = t->to_search_memory (t, start_addr, search_space_len,
2867 pattern, pattern_len, found_addrp);
2871 /* If a special version of to_search_memory isn't available, use the
2873 found = simple_search_memory (current_target.beneath,
2874 start_addr, search_space_len,
2875 pattern, pattern_len, found_addrp);
2879 fprintf_unfiltered (gdb_stdlog, " = %d\n", found);
2884 /* Look through the currently pushed targets. If none of them will
2885 be able to restart the currently running process, issue an error
2889 target_require_runnable (void)
2891 struct target_ops *t;
2893 for (t = target_stack; t != NULL; t = t->beneath)
2895 /* If this target knows how to create a new program, then
2896 assume we will still be able to after killing the current
2897 one. Either killing and mourning will not pop T, or else
2898 find_default_run_target will find it again. */
2899 if (t->to_create_inferior != NULL)
2902 /* Do not worry about thread_stratum targets that can not
2903 create inferiors. Assume they will be pushed again if
2904 necessary, and continue to the process_stratum. */
2905 if (t->to_stratum == thread_stratum
2906 || t->to_stratum == arch_stratum)
2909 error (_("The \"%s\" target does not support \"run\". "
2910 "Try \"help target\" or \"continue\"."),
2914 /* This function is only called if the target is running. In that
2915 case there should have been a process_stratum target and it
2916 should either know how to create inferiors, or not... */
2917 internal_error (__FILE__, __LINE__, _("No targets found"));
2920 /* Look through the list of possible targets for a target that can
2921 execute a run or attach command without any other data. This is
2922 used to locate the default process stratum.
2924 If DO_MESG is not NULL, the result is always valid (error() is
2925 called for errors); else, return NULL on error. */
2927 static struct target_ops *
2928 find_default_run_target (char *do_mesg)
2930 struct target_ops **t;
2931 struct target_ops *runable = NULL;
2936 for (t = target_structs; t < target_structs + target_struct_size;
2939 if ((*t)->to_can_run && target_can_run (*t))
2949 error (_("Don't know how to %s. Try \"help target\"."), do_mesg);
2958 find_default_attach (struct target_ops *ops, char *args, int from_tty)
2960 struct target_ops *t;
2962 t = find_default_run_target ("attach");
2963 (t->to_attach) (t, args, from_tty);
2968 find_default_create_inferior (struct target_ops *ops,
2969 char *exec_file, char *allargs, char **env,
2972 struct target_ops *t;
2974 t = find_default_run_target ("run");
2975 (t->to_create_inferior) (t, exec_file, allargs, env, from_tty);
2980 find_default_can_async_p (struct target_ops *ignore)
2982 struct target_ops *t;
2984 /* This may be called before the target is pushed on the stack;
2985 look for the default process stratum. If there's none, gdb isn't
2986 configured with a native debugger, and target remote isn't
2988 t = find_default_run_target (NULL);
2989 if (t && t->to_can_async_p != delegate_can_async_p)
2990 return (t->to_can_async_p) (t);
2995 find_default_is_async_p (struct target_ops *ignore)
2997 struct target_ops *t;
2999 /* This may be called before the target is pushed on the stack;
3000 look for the default process stratum. If there's none, gdb isn't
3001 configured with a native debugger, and target remote isn't
3003 t = find_default_run_target (NULL);
3004 if (t && t->to_is_async_p != delegate_is_async_p)
3005 return (t->to_is_async_p) (t);
3010 find_default_supports_non_stop (struct target_ops *self)
3012 struct target_ops *t;
3014 t = find_default_run_target (NULL);
3015 if (t && t->to_supports_non_stop)
3016 return (t->to_supports_non_stop) (t);
3021 target_supports_non_stop (void)
3023 struct target_ops *t;
3025 for (t = ¤t_target; t != NULL; t = t->beneath)
3026 if (t->to_supports_non_stop)
3027 return t->to_supports_non_stop (t);
3032 /* Implement the "info proc" command. */
3035 target_info_proc (char *args, enum info_proc_what what)
3037 struct target_ops *t;
3039 /* If we're already connected to something that can get us OS
3040 related data, use it. Otherwise, try using the native
3042 if (current_target.to_stratum >= process_stratum)
3043 t = current_target.beneath;
3045 t = find_default_run_target (NULL);
3047 for (; t != NULL; t = t->beneath)
3049 if (t->to_info_proc != NULL)
3051 t->to_info_proc (t, args, what);
3054 fprintf_unfiltered (gdb_stdlog,
3055 "target_info_proc (\"%s\", %d)\n", args, what);
3065 find_default_supports_disable_randomization (struct target_ops *self)
3067 struct target_ops *t;
3069 t = find_default_run_target (NULL);
3070 if (t && t->to_supports_disable_randomization)
3071 return (t->to_supports_disable_randomization) (t);
3076 target_supports_disable_randomization (void)
3078 struct target_ops *t;
3080 for (t = ¤t_target; t != NULL; t = t->beneath)
3081 if (t->to_supports_disable_randomization)
3082 return t->to_supports_disable_randomization (t);
3088 target_get_osdata (const char *type)
3090 struct target_ops *t;
3092 /* If we're already connected to something that can get us OS
3093 related data, use it. Otherwise, try using the native
3095 if (current_target.to_stratum >= process_stratum)
3096 t = current_target.beneath;
3098 t = find_default_run_target ("get OS data");
3103 return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type);
3106 /* Determine the current address space of thread PTID. */
3108 struct address_space *
3109 target_thread_address_space (ptid_t ptid)
3111 struct address_space *aspace;
3112 struct inferior *inf;
3113 struct target_ops *t;
3115 for (t = current_target.beneath; t != NULL; t = t->beneath)
3117 if (t->to_thread_address_space != NULL)
3119 aspace = t->to_thread_address_space (t, ptid);
3120 gdb_assert (aspace);
3123 fprintf_unfiltered (gdb_stdlog,
3124 "target_thread_address_space (%s) = %d\n",
3125 target_pid_to_str (ptid),
3126 address_space_num (aspace));
3131 /* Fall-back to the "main" address space of the inferior. */
3132 inf = find_inferior_pid (ptid_get_pid (ptid));
3134 if (inf == NULL || inf->aspace == NULL)
3135 internal_error (__FILE__, __LINE__,
3136 _("Can't determine the current "
3137 "address space of thread %s\n"),
3138 target_pid_to_str (ptid));
3144 /* Target file operations. */
3146 static struct target_ops *
3147 default_fileio_target (void)
3149 /* If we're already connected to something that can perform
3150 file I/O, use it. Otherwise, try using the native target. */
3151 if (current_target.to_stratum >= process_stratum)
3152 return current_target.beneath;
3154 return find_default_run_target ("file I/O");
3157 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3158 target file descriptor, or -1 if an error occurs (and set
3161 target_fileio_open (const char *filename, int flags, int mode,
3164 struct target_ops *t;
3166 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3168 if (t->to_fileio_open != NULL)
3170 int fd = t->to_fileio_open (t, filename, flags, mode, target_errno);
3173 fprintf_unfiltered (gdb_stdlog,
3174 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3175 filename, flags, mode,
3176 fd, fd != -1 ? 0 : *target_errno);
3181 *target_errno = FILEIO_ENOSYS;
3185 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3186 Return the number of bytes written, or -1 if an error occurs
3187 (and set *TARGET_ERRNO). */
3189 target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len,
3190 ULONGEST offset, int *target_errno)
3192 struct target_ops *t;
3194 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3196 if (t->to_fileio_pwrite != NULL)
3198 int ret = t->to_fileio_pwrite (t, fd, write_buf, len, offset,
3202 fprintf_unfiltered (gdb_stdlog,
3203 "target_fileio_pwrite (%d,...,%d,%s) "
3205 fd, len, pulongest (offset),
3206 ret, ret != -1 ? 0 : *target_errno);
3211 *target_errno = FILEIO_ENOSYS;
3215 /* Read up to LEN bytes FD on the target into READ_BUF.
3216 Return the number of bytes read, or -1 if an error occurs
3217 (and set *TARGET_ERRNO). */
3219 target_fileio_pread (int fd, gdb_byte *read_buf, int len,
3220 ULONGEST offset, int *target_errno)
3222 struct target_ops *t;
3224 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3226 if (t->to_fileio_pread != NULL)
3228 int ret = t->to_fileio_pread (t, fd, read_buf, len, offset,
3232 fprintf_unfiltered (gdb_stdlog,
3233 "target_fileio_pread (%d,...,%d,%s) "
3235 fd, len, pulongest (offset),
3236 ret, ret != -1 ? 0 : *target_errno);
3241 *target_errno = FILEIO_ENOSYS;
3245 /* Close FD on the target. Return 0, or -1 if an error occurs
3246 (and set *TARGET_ERRNO). */
3248 target_fileio_close (int fd, int *target_errno)
3250 struct target_ops *t;
3252 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3254 if (t->to_fileio_close != NULL)
3256 int ret = t->to_fileio_close (t, fd, target_errno);
3259 fprintf_unfiltered (gdb_stdlog,
3260 "target_fileio_close (%d) = %d (%d)\n",
3261 fd, ret, ret != -1 ? 0 : *target_errno);
3266 *target_errno = FILEIO_ENOSYS;
3270 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3271 occurs (and set *TARGET_ERRNO). */
3273 target_fileio_unlink (const char *filename, int *target_errno)
3275 struct target_ops *t;
3277 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3279 if (t->to_fileio_unlink != NULL)
3281 int ret = t->to_fileio_unlink (t, filename, target_errno);
3284 fprintf_unfiltered (gdb_stdlog,
3285 "target_fileio_unlink (%s) = %d (%d)\n",
3286 filename, ret, ret != -1 ? 0 : *target_errno);
3291 *target_errno = FILEIO_ENOSYS;
3295 /* Read value of symbolic link FILENAME on the target. Return a
3296 null-terminated string allocated via xmalloc, or NULL if an error
3297 occurs (and set *TARGET_ERRNO). */
3299 target_fileio_readlink (const char *filename, int *target_errno)
3301 struct target_ops *t;
3303 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3305 if (t->to_fileio_readlink != NULL)
3307 char *ret = t->to_fileio_readlink (t, filename, target_errno);
3310 fprintf_unfiltered (gdb_stdlog,
3311 "target_fileio_readlink (%s) = %s (%d)\n",
3312 filename, ret? ret : "(nil)",
3313 ret? 0 : *target_errno);
3318 *target_errno = FILEIO_ENOSYS;
3323 target_fileio_close_cleanup (void *opaque)
3325 int fd = *(int *) opaque;
3328 target_fileio_close (fd, &target_errno);
3331 /* Read target file FILENAME. Store the result in *BUF_P and
3332 return the size of the transferred data. PADDING additional bytes are
3333 available in *BUF_P. This is a helper function for
3334 target_fileio_read_alloc; see the declaration of that function for more
3338 target_fileio_read_alloc_1 (const char *filename,
3339 gdb_byte **buf_p, int padding)
3341 struct cleanup *close_cleanup;
3342 size_t buf_alloc, buf_pos;
3348 fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno);
3352 close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd);
3354 /* Start by reading up to 4K at a time. The target will throttle
3355 this number down if necessary. */
3357 buf = xmalloc (buf_alloc);
3361 n = target_fileio_pread (fd, &buf[buf_pos],
3362 buf_alloc - buf_pos - padding, buf_pos,
3366 /* An error occurred. */
3367 do_cleanups (close_cleanup);
3373 /* Read all there was. */
3374 do_cleanups (close_cleanup);
3384 /* If the buffer is filling up, expand it. */
3385 if (buf_alloc < buf_pos * 2)
3388 buf = xrealloc (buf, buf_alloc);
3395 /* Read target file FILENAME. Store the result in *BUF_P and return
3396 the size of the transferred data. See the declaration in "target.h"
3397 function for more information about the return value. */
3400 target_fileio_read_alloc (const char *filename, gdb_byte **buf_p)
3402 return target_fileio_read_alloc_1 (filename, buf_p, 0);
3405 /* Read target file FILENAME. The result is NUL-terminated and
3406 returned as a string, allocated using xmalloc. If an error occurs
3407 or the transfer is unsupported, NULL is returned. Empty objects
3408 are returned as allocated but empty strings. A warning is issued
3409 if the result contains any embedded NUL bytes. */
3412 target_fileio_read_stralloc (const char *filename)
3416 LONGEST i, transferred;
3418 transferred = target_fileio_read_alloc_1 (filename, &buffer, 1);
3419 bufstr = (char *) buffer;
3421 if (transferred < 0)
3424 if (transferred == 0)
3425 return xstrdup ("");
3427 bufstr[transferred] = 0;
3429 /* Check for embedded NUL bytes; but allow trailing NULs. */
3430 for (i = strlen (bufstr); i < transferred; i++)
3433 warning (_("target file %s "
3434 "contained unexpected null characters"),
3444 default_region_ok_for_hw_watchpoint (struct target_ops *self,
3445 CORE_ADDR addr, int len)
3447 return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT);
3451 default_watchpoint_addr_within_range (struct target_ops *target,
3453 CORE_ADDR start, int length)
3455 return addr >= start && addr < start + length;
3458 static struct gdbarch *
3459 default_thread_architecture (struct target_ops *ops, ptid_t ptid)
3461 return target_gdbarch ();
3471 * Find the next target down the stack from the specified target.
3475 find_target_beneath (struct target_ops *t)
3483 find_target_at (enum strata stratum)
3485 struct target_ops *t;
3487 for (t = current_target.beneath; t != NULL; t = t->beneath)
3488 if (t->to_stratum == stratum)
3495 /* The inferior process has died. Long live the inferior! */
3498 generic_mourn_inferior (void)
3502 ptid = inferior_ptid;
3503 inferior_ptid = null_ptid;
3505 /* Mark breakpoints uninserted in case something tries to delete a
3506 breakpoint while we delete the inferior's threads (which would
3507 fail, since the inferior is long gone). */
3508 mark_breakpoints_out ();
3510 if (!ptid_equal (ptid, null_ptid))
3512 int pid = ptid_get_pid (ptid);
3513 exit_inferior (pid);
3516 /* Note this wipes step-resume breakpoints, so needs to be done
3517 after exit_inferior, which ends up referencing the step-resume
3518 breakpoints through clear_thread_inferior_resources. */
3519 breakpoint_init_inferior (inf_exited);
3521 registers_changed ();
3523 reopen_exec_file ();
3524 reinit_frame_cache ();
3526 if (deprecated_detach_hook)
3527 deprecated_detach_hook ();
3530 /* Convert a normal process ID to a string. Returns the string in a
3534 normal_pid_to_str (ptid_t ptid)
3536 static char buf[32];
3538 xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid));
3543 dummy_pid_to_str (struct target_ops *ops, ptid_t ptid)
3545 return normal_pid_to_str (ptid);
3548 /* Error-catcher for target_find_memory_regions. */
3550 dummy_find_memory_regions (struct target_ops *self,
3551 find_memory_region_ftype ignore1, void *ignore2)
3553 error (_("Command not implemented for this target."));
3557 /* Error-catcher for target_make_corefile_notes. */
3559 dummy_make_corefile_notes (struct target_ops *self,
3560 bfd *ignore1, int *ignore2)
3562 error (_("Command not implemented for this target."));
3566 /* Set up the handful of non-empty slots needed by the dummy target
3570 init_dummy_target (void)
3572 dummy_target.to_shortname = "None";
3573 dummy_target.to_longname = "None";
3574 dummy_target.to_doc = "";
3575 dummy_target.to_create_inferior = find_default_create_inferior;
3576 dummy_target.to_supports_non_stop = find_default_supports_non_stop;
3577 dummy_target.to_supports_disable_randomization
3578 = find_default_supports_disable_randomization;
3579 dummy_target.to_pid_to_str = dummy_pid_to_str;
3580 dummy_target.to_stratum = dummy_stratum;
3581 dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero;
3582 dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero;
3583 dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero;
3584 dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero;
3585 dummy_target.to_has_execution
3586 = (int (*) (struct target_ops *, ptid_t)) return_zero;
3587 dummy_target.to_magic = OPS_MAGIC;
3589 install_dummy_methods (&dummy_target);
3593 debug_to_open (char *args, int from_tty)
3595 debug_target.to_open (args, from_tty);
3597 fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty);
3601 target_close (struct target_ops *targ)
3603 gdb_assert (!target_is_pushed (targ));
3605 if (targ->to_xclose != NULL)
3606 targ->to_xclose (targ);
3607 else if (targ->to_close != NULL)
3608 targ->to_close (targ);
3611 fprintf_unfiltered (gdb_stdlog, "target_close ()\n");
3615 target_attach (char *args, int from_tty)
3617 current_target.to_attach (¤t_target, args, from_tty);
3619 fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n",
3624 target_thread_alive (ptid_t ptid)
3626 struct target_ops *t;
3628 for (t = current_target.beneath; t != NULL; t = t->beneath)
3630 if (t->to_thread_alive != NULL)
3634 retval = t->to_thread_alive (t, ptid);
3636 fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n",
3637 ptid_get_pid (ptid), retval);
3647 target_find_new_threads (void)
3649 struct target_ops *t;
3651 for (t = current_target.beneath; t != NULL; t = t->beneath)
3653 if (t->to_find_new_threads != NULL)
3655 t->to_find_new_threads (t);
3657 fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n");
3665 target_stop (ptid_t ptid)
3669 warning (_("May not interrupt or stop the target, ignoring attempt"));
3673 (*current_target.to_stop) (¤t_target, ptid);
3677 debug_to_post_attach (struct target_ops *self, int pid)
3679 debug_target.to_post_attach (&debug_target, pid);
3681 fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid);
3684 /* Concatenate ELEM to LIST, a comma separate list, and return the
3685 result. The LIST incoming argument is released. */
3688 str_comma_list_concat_elem (char *list, const char *elem)
3691 return xstrdup (elem);
3693 return reconcat (list, list, ", ", elem, (char *) NULL);
3696 /* Helper for target_options_to_string. If OPT is present in
3697 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3698 Returns the new resulting string. OPT is removed from
3702 do_option (int *target_options, char *ret,
3703 int opt, char *opt_str)
3705 if ((*target_options & opt) != 0)
3707 ret = str_comma_list_concat_elem (ret, opt_str);
3708 *target_options &= ~opt;
3715 target_options_to_string (int target_options)
3719 #define DO_TARG_OPTION(OPT) \
3720 ret = do_option (&target_options, ret, OPT, #OPT)
3722 DO_TARG_OPTION (TARGET_WNOHANG);
3724 if (target_options != 0)
3725 ret = str_comma_list_concat_elem (ret, "unknown???");
3733 debug_print_register (const char * func,
3734 struct regcache *regcache, int regno)
3736 struct gdbarch *gdbarch = get_regcache_arch (regcache);
3738 fprintf_unfiltered (gdb_stdlog, "%s ", func);
3739 if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)
3740 && gdbarch_register_name (gdbarch, regno) != NULL
3741 && gdbarch_register_name (gdbarch, regno)[0] != '\0')
3742 fprintf_unfiltered (gdb_stdlog, "(%s)",
3743 gdbarch_register_name (gdbarch, regno));
3745 fprintf_unfiltered (gdb_stdlog, "(%d)", regno);
3746 if (regno >= 0 && regno < gdbarch_num_regs (gdbarch))
3748 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
3749 int i, size = register_size (gdbarch, regno);
3750 gdb_byte buf[MAX_REGISTER_SIZE];
3752 regcache_raw_collect (regcache, regno, buf);
3753 fprintf_unfiltered (gdb_stdlog, " = ");
3754 for (i = 0; i < size; i++)
3756 fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]);
3758 if (size <= sizeof (LONGEST))
3760 ULONGEST val = extract_unsigned_integer (buf, size, byte_order);
3762 fprintf_unfiltered (gdb_stdlog, " %s %s",
3763 core_addr_to_string_nz (val), plongest (val));
3766 fprintf_unfiltered (gdb_stdlog, "\n");
3770 target_fetch_registers (struct regcache *regcache, int regno)
3772 struct target_ops *t;
3774 for (t = current_target.beneath; t != NULL; t = t->beneath)
3776 if (t->to_fetch_registers != NULL)
3778 t->to_fetch_registers (t, regcache, regno);
3780 debug_print_register ("target_fetch_registers", regcache, regno);
3787 target_store_registers (struct regcache *regcache, int regno)
3789 struct target_ops *t;
3791 if (!may_write_registers)
3792 error (_("Writing to registers is not allowed (regno %d)"), regno);
3794 current_target.to_store_registers (¤t_target, regcache, regno);
3797 debug_print_register ("target_store_registers", regcache, regno);
3802 target_core_of_thread (ptid_t ptid)
3804 struct target_ops *t;
3806 for (t = current_target.beneath; t != NULL; t = t->beneath)
3808 if (t->to_core_of_thread != NULL)
3810 int retval = t->to_core_of_thread (t, ptid);
3813 fprintf_unfiltered (gdb_stdlog,
3814 "target_core_of_thread (%d) = %d\n",
3815 ptid_get_pid (ptid), retval);
3824 target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size)
3826 struct target_ops *t;
3828 for (t = current_target.beneath; t != NULL; t = t->beneath)
3830 if (t->to_verify_memory != NULL)
3832 int retval = t->to_verify_memory (t, data, memaddr, size);
3835 fprintf_unfiltered (gdb_stdlog,
3836 "target_verify_memory (%s, %s) = %d\n",
3837 paddress (target_gdbarch (), memaddr),
3847 /* The documentation for this function is in its prototype declaration in
3851 target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw)
3853 struct target_ops *t;
3855 for (t = current_target.beneath; t != NULL; t = t->beneath)
3856 if (t->to_insert_mask_watchpoint != NULL)
3860 ret = t->to_insert_mask_watchpoint (t, addr, mask, rw);
3863 fprintf_unfiltered (gdb_stdlog, "\
3864 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3865 core_addr_to_string (addr),
3866 core_addr_to_string (mask), rw, ret);
3874 /* The documentation for this function is in its prototype declaration in
3878 target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw)
3880 struct target_ops *t;
3882 for (t = current_target.beneath; t != NULL; t = t->beneath)
3883 if (t->to_remove_mask_watchpoint != NULL)
3887 ret = t->to_remove_mask_watchpoint (t, addr, mask, rw);
3890 fprintf_unfiltered (gdb_stdlog, "\
3891 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3892 core_addr_to_string (addr),
3893 core_addr_to_string (mask), rw, ret);
3901 /* The documentation for this function is in its prototype declaration
3905 target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask)
3907 struct target_ops *t;
3909 for (t = current_target.beneath; t != NULL; t = t->beneath)
3910 if (t->to_masked_watch_num_registers != NULL)
3911 return t->to_masked_watch_num_registers (t, addr, mask);
3916 /* The documentation for this function is in its prototype declaration
3920 target_ranged_break_num_registers (void)
3922 struct target_ops *t;
3924 for (t = current_target.beneath; t != NULL; t = t->beneath)
3925 if (t->to_ranged_break_num_registers != NULL)
3926 return t->to_ranged_break_num_registers (t);
3933 struct btrace_target_info *
3934 target_enable_btrace (ptid_t ptid)
3936 struct target_ops *t;
3938 for (t = current_target.beneath; t != NULL; t = t->beneath)
3939 if (t->to_enable_btrace != NULL)
3940 return t->to_enable_btrace (t, ptid);
3949 target_disable_btrace (struct btrace_target_info *btinfo)
3951 struct target_ops *t;
3953 for (t = current_target.beneath; t != NULL; t = t->beneath)
3954 if (t->to_disable_btrace != NULL)
3956 t->to_disable_btrace (t, btinfo);
3966 target_teardown_btrace (struct btrace_target_info *btinfo)
3968 struct target_ops *t;
3970 for (t = current_target.beneath; t != NULL; t = t->beneath)
3971 if (t->to_teardown_btrace != NULL)
3973 t->to_teardown_btrace (t, btinfo);
3983 target_read_btrace (VEC (btrace_block_s) **btrace,
3984 struct btrace_target_info *btinfo,
3985 enum btrace_read_type type)
3987 struct target_ops *t;
3989 for (t = current_target.beneath; t != NULL; t = t->beneath)
3990 if (t->to_read_btrace != NULL)
3991 return t->to_read_btrace (t, btrace, btinfo, type);
3994 return BTRACE_ERR_NOT_SUPPORTED;
4000 target_stop_recording (void)
4002 struct target_ops *t;
4004 for (t = current_target.beneath; t != NULL; t = t->beneath)
4005 if (t->to_stop_recording != NULL)
4007 t->to_stop_recording (t);
4011 /* This is optional. */
4017 target_info_record (void)
4019 struct target_ops *t;
4021 for (t = current_target.beneath; t != NULL; t = t->beneath)
4022 if (t->to_info_record != NULL)
4024 t->to_info_record (t);
4034 target_save_record (const char *filename)
4036 struct target_ops *t;
4038 for (t = current_target.beneath; t != NULL; t = t->beneath)
4039 if (t->to_save_record != NULL)
4041 t->to_save_record (t, filename);
4051 target_supports_delete_record (void)
4053 struct target_ops *t;
4055 for (t = current_target.beneath; t != NULL; t = t->beneath)
4056 if (t->to_delete_record != NULL)
4065 target_delete_record (void)
4067 struct target_ops *t;
4069 for (t = current_target.beneath; t != NULL; t = t->beneath)
4070 if (t->to_delete_record != NULL)
4072 t->to_delete_record (t);
4082 target_record_is_replaying (void)
4084 struct target_ops *t;
4086 for (t = current_target.beneath; t != NULL; t = t->beneath)
4087 if (t->to_record_is_replaying != NULL)
4088 return t->to_record_is_replaying (t);
4096 target_goto_record_begin (void)
4098 struct target_ops *t;
4100 for (t = current_target.beneath; t != NULL; t = t->beneath)
4101 if (t->to_goto_record_begin != NULL)
4103 t->to_goto_record_begin (t);
4113 target_goto_record_end (void)
4115 struct target_ops *t;
4117 for (t = current_target.beneath; t != NULL; t = t->beneath)
4118 if (t->to_goto_record_end != NULL)
4120 t->to_goto_record_end (t);
4130 target_goto_record (ULONGEST insn)
4132 struct target_ops *t;
4134 for (t = current_target.beneath; t != NULL; t = t->beneath)
4135 if (t->to_goto_record != NULL)
4137 t->to_goto_record (t, insn);
4147 target_insn_history (int size, int flags)
4149 struct target_ops *t;
4151 for (t = current_target.beneath; t != NULL; t = t->beneath)
4152 if (t->to_insn_history != NULL)
4154 t->to_insn_history (t, size, flags);
4164 target_insn_history_from (ULONGEST from, int size, int flags)
4166 struct target_ops *t;
4168 for (t = current_target.beneath; t != NULL; t = t->beneath)
4169 if (t->to_insn_history_from != NULL)
4171 t->to_insn_history_from (t, from, size, flags);
4181 target_insn_history_range (ULONGEST begin, ULONGEST end, int flags)
4183 struct target_ops *t;
4185 for (t = current_target.beneath; t != NULL; t = t->beneath)
4186 if (t->to_insn_history_range != NULL)
4188 t->to_insn_history_range (t, begin, end, flags);
4198 target_call_history (int size, int flags)
4200 struct target_ops *t;
4202 for (t = current_target.beneath; t != NULL; t = t->beneath)
4203 if (t->to_call_history != NULL)
4205 t->to_call_history (t, size, flags);
4215 target_call_history_from (ULONGEST begin, int size, int flags)
4217 struct target_ops *t;
4219 for (t = current_target.beneath; t != NULL; t = t->beneath)
4220 if (t->to_call_history_from != NULL)
4222 t->to_call_history_from (t, begin, size, flags);
4232 target_call_history_range (ULONGEST begin, ULONGEST end, int flags)
4234 struct target_ops *t;
4236 for (t = current_target.beneath; t != NULL; t = t->beneath)
4237 if (t->to_call_history_range != NULL)
4239 t->to_call_history_range (t, begin, end, flags);
4247 debug_to_prepare_to_store (struct target_ops *self, struct regcache *regcache)
4249 debug_target.to_prepare_to_store (&debug_target, regcache);
4251 fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n");
4256 const struct frame_unwind *
4257 target_get_unwinder (void)
4259 struct target_ops *t;
4261 for (t = current_target.beneath; t != NULL; t = t->beneath)
4262 if (t->to_get_unwinder != NULL)
4263 return t->to_get_unwinder;
4270 const struct frame_unwind *
4271 target_get_tailcall_unwinder (void)
4273 struct target_ops *t;
4275 for (t = current_target.beneath; t != NULL; t = t->beneath)
4276 if (t->to_get_tailcall_unwinder != NULL)
4277 return t->to_get_tailcall_unwinder;
4285 forward_target_decr_pc_after_break (struct target_ops *ops,
4286 struct gdbarch *gdbarch)
4288 for (; ops != NULL; ops = ops->beneath)
4289 if (ops->to_decr_pc_after_break != NULL)
4290 return ops->to_decr_pc_after_break (ops, gdbarch);
4292 return gdbarch_decr_pc_after_break (gdbarch);
4298 target_decr_pc_after_break (struct gdbarch *gdbarch)
4300 return forward_target_decr_pc_after_break (current_target.beneath, gdbarch);
4304 deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len,
4305 int write, struct mem_attrib *attrib,
4306 struct target_ops *target)
4310 retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write,
4313 fprintf_unfiltered (gdb_stdlog,
4314 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4315 paddress (target_gdbarch (), memaddr), len,
4316 write ? "write" : "read", retval);
4322 fputs_unfiltered (", bytes =", gdb_stdlog);
4323 for (i = 0; i < retval; i++)
4325 if ((((intptr_t) &(myaddr[i])) & 0xf) == 0)
4327 if (targetdebug < 2 && i > 0)
4329 fprintf_unfiltered (gdb_stdlog, " ...");
4332 fprintf_unfiltered (gdb_stdlog, "\n");
4335 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
4339 fputc_unfiltered ('\n', gdb_stdlog);
4345 debug_to_files_info (struct target_ops *target)
4347 debug_target.to_files_info (target);
4349 fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n");
4353 debug_to_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch,
4354 struct bp_target_info *bp_tgt)
4358 retval = debug_target.to_insert_breakpoint (&debug_target, gdbarch, bp_tgt);
4360 fprintf_unfiltered (gdb_stdlog,
4361 "target_insert_breakpoint (%s, xxx) = %ld\n",
4362 core_addr_to_string (bp_tgt->placed_address),
4363 (unsigned long) retval);
4368 debug_to_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch,
4369 struct bp_target_info *bp_tgt)
4373 retval = debug_target.to_remove_breakpoint (&debug_target, gdbarch, bp_tgt);
4375 fprintf_unfiltered (gdb_stdlog,
4376 "target_remove_breakpoint (%s, xxx) = %ld\n",
4377 core_addr_to_string (bp_tgt->placed_address),
4378 (unsigned long) retval);
4383 debug_to_can_use_hw_breakpoint (struct target_ops *self,
4384 int type, int cnt, int from_tty)
4388 retval = debug_target.to_can_use_hw_breakpoint (&debug_target,
4389 type, cnt, from_tty);
4391 fprintf_unfiltered (gdb_stdlog,
4392 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4393 (unsigned long) type,
4394 (unsigned long) cnt,
4395 (unsigned long) from_tty,
4396 (unsigned long) retval);
4401 debug_to_region_ok_for_hw_watchpoint (struct target_ops *self,
4402 CORE_ADDR addr, int len)
4406 retval = debug_target.to_region_ok_for_hw_watchpoint (&debug_target,
4409 fprintf_unfiltered (gdb_stdlog,
4410 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4411 core_addr_to_string (addr), (unsigned long) len,
4412 core_addr_to_string (retval));
4417 debug_to_can_accel_watchpoint_condition (struct target_ops *self,
4418 CORE_ADDR addr, int len, int rw,
4419 struct expression *cond)
4423 retval = debug_target.to_can_accel_watchpoint_condition (&debug_target,
4427 fprintf_unfiltered (gdb_stdlog,
4428 "target_can_accel_watchpoint_condition "
4429 "(%s, %d, %d, %s) = %ld\n",
4430 core_addr_to_string (addr), len, rw,
4431 host_address_to_string (cond), (unsigned long) retval);
4436 debug_to_stopped_by_watchpoint (struct target_ops *ops)
4440 retval = debug_target.to_stopped_by_watchpoint (&debug_target);
4442 fprintf_unfiltered (gdb_stdlog,
4443 "target_stopped_by_watchpoint () = %ld\n",
4444 (unsigned long) retval);
4449 debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr)
4453 retval = debug_target.to_stopped_data_address (target, addr);
4455 fprintf_unfiltered (gdb_stdlog,
4456 "target_stopped_data_address ([%s]) = %ld\n",
4457 core_addr_to_string (*addr),
4458 (unsigned long)retval);
4463 debug_to_watchpoint_addr_within_range (struct target_ops *target,
4465 CORE_ADDR start, int length)
4469 retval = debug_target.to_watchpoint_addr_within_range (target, addr,
4472 fprintf_filtered (gdb_stdlog,
4473 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4474 core_addr_to_string (addr), core_addr_to_string (start),
4480 debug_to_insert_hw_breakpoint (struct target_ops *self,
4481 struct gdbarch *gdbarch,
4482 struct bp_target_info *bp_tgt)
4486 retval = debug_target.to_insert_hw_breakpoint (&debug_target,
4489 fprintf_unfiltered (gdb_stdlog,
4490 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4491 core_addr_to_string (bp_tgt->placed_address),
4492 (unsigned long) retval);
4497 debug_to_remove_hw_breakpoint (struct target_ops *self,
4498 struct gdbarch *gdbarch,
4499 struct bp_target_info *bp_tgt)
4503 retval = debug_target.to_remove_hw_breakpoint (&debug_target,
4506 fprintf_unfiltered (gdb_stdlog,
4507 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4508 core_addr_to_string (bp_tgt->placed_address),
4509 (unsigned long) retval);
4514 debug_to_insert_watchpoint (struct target_ops *self,
4515 CORE_ADDR addr, int len, int type,
4516 struct expression *cond)
4520 retval = debug_target.to_insert_watchpoint (&debug_target,
4521 addr, len, type, cond);
4523 fprintf_unfiltered (gdb_stdlog,
4524 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4525 core_addr_to_string (addr), len, type,
4526 host_address_to_string (cond), (unsigned long) retval);
4531 debug_to_remove_watchpoint (struct target_ops *self,
4532 CORE_ADDR addr, int len, int type,
4533 struct expression *cond)
4537 retval = debug_target.to_remove_watchpoint (&debug_target,
4538 addr, len, type, cond);
4540 fprintf_unfiltered (gdb_stdlog,
4541 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4542 core_addr_to_string (addr), len, type,
4543 host_address_to_string (cond), (unsigned long) retval);
4548 debug_to_terminal_init (struct target_ops *self)
4550 debug_target.to_terminal_init (&debug_target);
4552 fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n");
4556 debug_to_terminal_inferior (struct target_ops *self)
4558 debug_target.to_terminal_inferior (&debug_target);
4560 fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n");
4564 debug_to_terminal_ours_for_output (struct target_ops *self)
4566 debug_target.to_terminal_ours_for_output (&debug_target);
4568 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n");
4572 debug_to_terminal_ours (struct target_ops *self)
4574 debug_target.to_terminal_ours (&debug_target);
4576 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n");
4580 debug_to_terminal_save_ours (struct target_ops *self)
4582 debug_target.to_terminal_save_ours (&debug_target);
4584 fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n");
4588 debug_to_terminal_info (struct target_ops *self,
4589 const char *arg, int from_tty)
4591 debug_target.to_terminal_info (&debug_target, arg, from_tty);
4593 fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg,
4598 debug_to_load (struct target_ops *self, char *args, int from_tty)
4600 debug_target.to_load (&debug_target, args, from_tty);
4602 fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty);
4606 debug_to_post_startup_inferior (struct target_ops *self, ptid_t ptid)
4608 debug_target.to_post_startup_inferior (&debug_target, ptid);
4610 fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n",
4611 ptid_get_pid (ptid));
4615 debug_to_insert_fork_catchpoint (struct target_ops *self, int pid)
4619 retval = debug_target.to_insert_fork_catchpoint (&debug_target, pid);
4621 fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n",
4628 debug_to_remove_fork_catchpoint (struct target_ops *self, int pid)
4632 retval = debug_target.to_remove_fork_catchpoint (&debug_target, pid);
4634 fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n",
4641 debug_to_insert_vfork_catchpoint (struct target_ops *self, int pid)
4645 retval = debug_target.to_insert_vfork_catchpoint (&debug_target, pid);
4647 fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n",
4654 debug_to_remove_vfork_catchpoint (struct target_ops *self, int pid)
4658 retval = debug_target.to_remove_vfork_catchpoint (&debug_target, pid);
4660 fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n",
4667 debug_to_insert_exec_catchpoint (struct target_ops *self, int pid)
4671 retval = debug_target.to_insert_exec_catchpoint (&debug_target, pid);
4673 fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n",
4680 debug_to_remove_exec_catchpoint (struct target_ops *self, int pid)
4684 retval = debug_target.to_remove_exec_catchpoint (&debug_target, pid);
4686 fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n",
4693 debug_to_has_exited (struct target_ops *self,
4694 int pid, int wait_status, int *exit_status)
4698 has_exited = debug_target.to_has_exited (&debug_target,
4699 pid, wait_status, exit_status);
4701 fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n",
4702 pid, wait_status, *exit_status, has_exited);
4708 debug_to_can_run (struct target_ops *self)
4712 retval = debug_target.to_can_run (&debug_target);
4714 fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval);
4719 static struct gdbarch *
4720 debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid)
4722 struct gdbarch *retval;
4724 retval = debug_target.to_thread_architecture (ops, ptid);
4726 fprintf_unfiltered (gdb_stdlog,
4727 "target_thread_architecture (%s) = %s [%s]\n",
4728 target_pid_to_str (ptid),
4729 host_address_to_string (retval),
4730 gdbarch_bfd_arch_info (retval)->printable_name);
4735 debug_to_stop (struct target_ops *self, ptid_t ptid)
4737 debug_target.to_stop (&debug_target, ptid);
4739 fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n",
4740 target_pid_to_str (ptid));
4744 debug_to_rcmd (struct target_ops *self, char *command,
4745 struct ui_file *outbuf)
4747 debug_target.to_rcmd (&debug_target, command, outbuf);
4748 fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command);
4752 debug_to_pid_to_exec_file (struct target_ops *self, int pid)
4756 exec_file = debug_target.to_pid_to_exec_file (&debug_target, pid);
4758 fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n",
4765 setup_target_debug (void)
4767 memcpy (&debug_target, ¤t_target, sizeof debug_target);
4769 current_target.to_open = debug_to_open;
4770 current_target.to_post_attach = debug_to_post_attach;
4771 current_target.to_prepare_to_store = debug_to_prepare_to_store;
4772 current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory;
4773 current_target.to_files_info = debug_to_files_info;
4774 current_target.to_insert_breakpoint = debug_to_insert_breakpoint;
4775 current_target.to_remove_breakpoint = debug_to_remove_breakpoint;
4776 current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint;
4777 current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint;
4778 current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint;
4779 current_target.to_insert_watchpoint = debug_to_insert_watchpoint;
4780 current_target.to_remove_watchpoint = debug_to_remove_watchpoint;
4781 current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint;
4782 current_target.to_stopped_data_address = debug_to_stopped_data_address;
4783 current_target.to_watchpoint_addr_within_range
4784 = debug_to_watchpoint_addr_within_range;
4785 current_target.to_region_ok_for_hw_watchpoint
4786 = debug_to_region_ok_for_hw_watchpoint;
4787 current_target.to_can_accel_watchpoint_condition
4788 = debug_to_can_accel_watchpoint_condition;
4789 current_target.to_terminal_init = debug_to_terminal_init;
4790 current_target.to_terminal_inferior = debug_to_terminal_inferior;
4791 current_target.to_terminal_ours_for_output
4792 = debug_to_terminal_ours_for_output;
4793 current_target.to_terminal_ours = debug_to_terminal_ours;
4794 current_target.to_terminal_save_ours = debug_to_terminal_save_ours;
4795 current_target.to_terminal_info = debug_to_terminal_info;
4796 current_target.to_load = debug_to_load;
4797 current_target.to_post_startup_inferior = debug_to_post_startup_inferior;
4798 current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint;
4799 current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint;
4800 current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint;
4801 current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint;
4802 current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint;
4803 current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint;
4804 current_target.to_has_exited = debug_to_has_exited;
4805 current_target.to_can_run = debug_to_can_run;
4806 current_target.to_stop = debug_to_stop;
4807 current_target.to_rcmd = debug_to_rcmd;
4808 current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file;
4809 current_target.to_thread_architecture = debug_to_thread_architecture;
4813 static char targ_desc[] =
4814 "Names of targets and files being debugged.\nShows the entire \
4815 stack of targets currently in use (including the exec-file,\n\
4816 core-file, and process, if any), as well as the symbol file name.";
4819 default_rcmd (struct target_ops *self, char *command, struct ui_file *output)
4821 error (_("\"monitor\" command not supported by this target."));
4825 do_monitor_command (char *cmd,
4828 target_rcmd (cmd, gdb_stdtarg);
4831 /* Print the name of each layers of our target stack. */
4834 maintenance_print_target_stack (char *cmd, int from_tty)
4836 struct target_ops *t;
4838 printf_filtered (_("The current target stack is:\n"));
4840 for (t = target_stack; t != NULL; t = t->beneath)
4842 printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname);
4846 /* Controls if async mode is permitted. */
4847 int target_async_permitted = 0;
4849 /* The set command writes to this variable. If the inferior is
4850 executing, target_async_permitted is *not* updated. */
4851 static int target_async_permitted_1 = 0;
4854 set_target_async_command (char *args, int from_tty,
4855 struct cmd_list_element *c)
4857 if (have_live_inferiors ())
4859 target_async_permitted_1 = target_async_permitted;
4860 error (_("Cannot change this setting while the inferior is running."));
4863 target_async_permitted = target_async_permitted_1;
4867 show_target_async_command (struct ui_file *file, int from_tty,
4868 struct cmd_list_element *c,
4871 fprintf_filtered (file,
4872 _("Controlling the inferior in "
4873 "asynchronous mode is %s.\n"), value);
4876 /* Temporary copies of permission settings. */
4878 static int may_write_registers_1 = 1;
4879 static int may_write_memory_1 = 1;
4880 static int may_insert_breakpoints_1 = 1;
4881 static int may_insert_tracepoints_1 = 1;
4882 static int may_insert_fast_tracepoints_1 = 1;
4883 static int may_stop_1 = 1;
4885 /* Make the user-set values match the real values again. */
4888 update_target_permissions (void)
4890 may_write_registers_1 = may_write_registers;
4891 may_write_memory_1 = may_write_memory;
4892 may_insert_breakpoints_1 = may_insert_breakpoints;
4893 may_insert_tracepoints_1 = may_insert_tracepoints;
4894 may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints;
4895 may_stop_1 = may_stop;
4898 /* The one function handles (most of) the permission flags in the same
4902 set_target_permissions (char *args, int from_tty,
4903 struct cmd_list_element *c)
4905 if (target_has_execution)
4907 update_target_permissions ();
4908 error (_("Cannot change this setting while the inferior is running."));
4911 /* Make the real values match the user-changed values. */
4912 may_write_registers = may_write_registers_1;
4913 may_insert_breakpoints = may_insert_breakpoints_1;
4914 may_insert_tracepoints = may_insert_tracepoints_1;
4915 may_insert_fast_tracepoints = may_insert_fast_tracepoints_1;
4916 may_stop = may_stop_1;
4917 update_observer_mode ();
4920 /* Set memory write permission independently of observer mode. */
4923 set_write_memory_permission (char *args, int from_tty,
4924 struct cmd_list_element *c)
4926 /* Make the real values match the user-changed values. */
4927 may_write_memory = may_write_memory_1;
4928 update_observer_mode ();
4933 initialize_targets (void)
4935 init_dummy_target ();
4936 push_target (&dummy_target);
4938 add_info ("target", target_info, targ_desc);
4939 add_info ("files", target_info, targ_desc);
4941 add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\
4942 Set target debugging."), _("\
4943 Show target debugging."), _("\
4944 When non-zero, target debugging is enabled. Higher numbers are more\n\
4945 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4949 &setdebuglist, &showdebuglist);
4951 add_setshow_boolean_cmd ("trust-readonly-sections", class_support,
4952 &trust_readonly, _("\
4953 Set mode for reading from readonly sections."), _("\
4954 Show mode for reading from readonly sections."), _("\
4955 When this mode is on, memory reads from readonly sections (such as .text)\n\
4956 will be read from the object file instead of from the target. This will\n\
4957 result in significant performance improvement for remote targets."),
4959 show_trust_readonly,
4960 &setlist, &showlist);
4962 add_com ("monitor", class_obscure, do_monitor_command,
4963 _("Send a command to the remote monitor (remote targets only)."));
4965 add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack,
4966 _("Print the name of each layer of the internal target stack."),
4967 &maintenanceprintlist);
4969 add_setshow_boolean_cmd ("target-async", no_class,
4970 &target_async_permitted_1, _("\
4971 Set whether gdb controls the inferior in asynchronous mode."), _("\
4972 Show whether gdb controls the inferior in asynchronous mode."), _("\
4973 Tells gdb whether to control the inferior in asynchronous mode."),
4974 set_target_async_command,
4975 show_target_async_command,
4979 add_setshow_boolean_cmd ("may-write-registers", class_support,
4980 &may_write_registers_1, _("\
4981 Set permission to write into registers."), _("\
4982 Show permission to write into registers."), _("\
4983 When this permission is on, GDB may write into the target's registers.\n\
4984 Otherwise, any sort of write attempt will result in an error."),
4985 set_target_permissions, NULL,
4986 &setlist, &showlist);
4988 add_setshow_boolean_cmd ("may-write-memory", class_support,
4989 &may_write_memory_1, _("\
4990 Set permission to write into target memory."), _("\
4991 Show permission to write into target memory."), _("\
4992 When this permission is on, GDB may write into the target's memory.\n\
4993 Otherwise, any sort of write attempt will result in an error."),
4994 set_write_memory_permission, NULL,
4995 &setlist, &showlist);
4997 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support,
4998 &may_insert_breakpoints_1, _("\
4999 Set permission to insert breakpoints in the target."), _("\
5000 Show permission to insert breakpoints in the target."), _("\
5001 When this permission is on, GDB may insert breakpoints in the program.\n\
5002 Otherwise, any sort of insertion attempt will result in an error."),
5003 set_target_permissions, NULL,
5004 &setlist, &showlist);
5006 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support,
5007 &may_insert_tracepoints_1, _("\
5008 Set permission to insert tracepoints in the target."), _("\
5009 Show permission to insert tracepoints in the target."), _("\
5010 When this permission is on, GDB may insert tracepoints in the program.\n\
5011 Otherwise, any sort of insertion attempt will result in an error."),
5012 set_target_permissions, NULL,
5013 &setlist, &showlist);
5015 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support,
5016 &may_insert_fast_tracepoints_1, _("\
5017 Set permission to insert fast tracepoints in the target."), _("\
5018 Show permission to insert fast tracepoints in the target."), _("\
5019 When this permission is on, GDB may insert fast tracepoints.\n\
5020 Otherwise, any sort of insertion attempt will result in an error."),
5021 set_target_permissions, NULL,
5022 &setlist, &showlist);
5024 add_setshow_boolean_cmd ("may-interrupt", class_support,
5026 Set permission to interrupt or signal the target."), _("\
5027 Show permission to interrupt or signal the target."), _("\
5028 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5029 Otherwise, any attempt to interrupt or stop will be ignored."),
5030 set_target_permissions, NULL,
5031 &setlist, &showlist);