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 INHERIT (to_can_use_agent, t);
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_can_use_agent,
758 (int (*) (struct target_ops *))
760 de_fault (to_augmented_libraries_svr4_read,
761 (int (*) (struct target_ops *))
766 /* Finally, position the target-stack beneath the squashed
767 "current_target". That way code looking for a non-inherited
768 target method can quickly and simply find it. */
769 current_target.beneath = target_stack;
772 setup_target_debug ();
775 /* Push a new target type into the stack of the existing target accessors,
776 possibly superseding some of the existing accessors.
778 Rather than allow an empty stack, we always have the dummy target at
779 the bottom stratum, so we can call the function vectors without
783 push_target (struct target_ops *t)
785 struct target_ops **cur;
787 /* Check magic number. If wrong, it probably means someone changed
788 the struct definition, but not all the places that initialize one. */
789 if (t->to_magic != OPS_MAGIC)
791 fprintf_unfiltered (gdb_stderr,
792 "Magic number of %s target struct wrong\n",
794 internal_error (__FILE__, __LINE__,
795 _("failed internal consistency check"));
798 /* Find the proper stratum to install this target in. */
799 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
801 if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum)
805 /* If there's already targets at this stratum, remove them. */
806 /* FIXME: cagney/2003-10-15: I think this should be popping all
807 targets to CUR, and not just those at this stratum level. */
808 while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum)
810 /* There's already something at this stratum level. Close it,
811 and un-hook it from the stack. */
812 struct target_ops *tmp = (*cur);
814 (*cur) = (*cur)->beneath;
819 /* We have removed all targets in our stratum, now add the new one. */
823 update_current_target ();
826 /* Remove a target_ops vector from the stack, wherever it may be.
827 Return how many times it was removed (0 or 1). */
830 unpush_target (struct target_ops *t)
832 struct target_ops **cur;
833 struct target_ops *tmp;
835 if (t->to_stratum == dummy_stratum)
836 internal_error (__FILE__, __LINE__,
837 _("Attempt to unpush the dummy target"));
839 /* Look for the specified target. Note that we assume that a target
840 can only occur once in the target stack. */
842 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
848 /* If we don't find target_ops, quit. Only open targets should be
853 /* Unchain the target. */
855 (*cur) = (*cur)->beneath;
858 update_current_target ();
860 /* Finally close the target. Note we do this after unchaining, so
861 any target method calls from within the target_close
862 implementation don't end up in T anymore. */
869 pop_all_targets_above (enum strata above_stratum)
871 while ((int) (current_target.to_stratum) > (int) above_stratum)
873 if (!unpush_target (target_stack))
875 fprintf_unfiltered (gdb_stderr,
876 "pop_all_targets couldn't find target %s\n",
877 target_stack->to_shortname);
878 internal_error (__FILE__, __LINE__,
879 _("failed internal consistency check"));
886 pop_all_targets (void)
888 pop_all_targets_above (dummy_stratum);
891 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
894 target_is_pushed (struct target_ops *t)
896 struct target_ops **cur;
898 /* Check magic number. If wrong, it probably means someone changed
899 the struct definition, but not all the places that initialize one. */
900 if (t->to_magic != OPS_MAGIC)
902 fprintf_unfiltered (gdb_stderr,
903 "Magic number of %s target struct wrong\n",
905 internal_error (__FILE__, __LINE__,
906 _("failed internal consistency check"));
909 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
916 /* Using the objfile specified in OBJFILE, find the address for the
917 current thread's thread-local storage with offset OFFSET. */
919 target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset)
921 volatile CORE_ADDR addr = 0;
922 struct target_ops *target;
924 for (target = current_target.beneath;
926 target = target->beneath)
928 if (target->to_get_thread_local_address != NULL)
933 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
935 ptid_t ptid = inferior_ptid;
936 volatile struct gdb_exception ex;
938 TRY_CATCH (ex, RETURN_MASK_ALL)
942 /* Fetch the load module address for this objfile. */
943 lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (),
945 /* If it's 0, throw the appropriate exception. */
947 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR,
948 _("TLS load module not found"));
950 addr = target->to_get_thread_local_address (target, ptid,
953 /* If an error occurred, print TLS related messages here. Otherwise,
954 throw the error to some higher catcher. */
957 int objfile_is_library = (objfile->flags & OBJF_SHARED);
961 case TLS_NO_LIBRARY_SUPPORT_ERROR:
962 error (_("Cannot find thread-local variables "
963 "in this thread library."));
965 case TLS_LOAD_MODULE_NOT_FOUND_ERROR:
966 if (objfile_is_library)
967 error (_("Cannot find shared library `%s' in dynamic"
968 " linker's load module list"), objfile_name (objfile));
970 error (_("Cannot find executable file `%s' in dynamic"
971 " linker's load module list"), objfile_name (objfile));
973 case TLS_NOT_ALLOCATED_YET_ERROR:
974 if (objfile_is_library)
975 error (_("The inferior has not yet allocated storage for"
976 " thread-local variables in\n"
977 "the shared library `%s'\n"
979 objfile_name (objfile), target_pid_to_str (ptid));
981 error (_("The inferior has not yet allocated storage for"
982 " thread-local variables in\n"
983 "the executable `%s'\n"
985 objfile_name (objfile), target_pid_to_str (ptid));
987 case TLS_GENERIC_ERROR:
988 if (objfile_is_library)
989 error (_("Cannot find thread-local storage for %s, "
990 "shared library %s:\n%s"),
991 target_pid_to_str (ptid),
992 objfile_name (objfile), ex.message);
994 error (_("Cannot find thread-local storage for %s, "
995 "executable file %s:\n%s"),
996 target_pid_to_str (ptid),
997 objfile_name (objfile), ex.message);
1000 throw_exception (ex);
1005 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1006 TLS is an ABI-specific thing. But we don't do that yet. */
1008 error (_("Cannot find thread-local variables on this target"));
1014 target_xfer_status_to_string (enum target_xfer_status err)
1016 #define CASE(X) case X: return #X
1019 CASE(TARGET_XFER_E_IO);
1020 CASE(TARGET_XFER_E_UNAVAILABLE);
1029 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1031 /* target_read_string -- read a null terminated string, up to LEN bytes,
1032 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1033 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1034 is responsible for freeing it. Return the number of bytes successfully
1038 target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop)
1040 int tlen, offset, i;
1044 int buffer_allocated;
1046 unsigned int nbytes_read = 0;
1048 gdb_assert (string);
1050 /* Small for testing. */
1051 buffer_allocated = 4;
1052 buffer = xmalloc (buffer_allocated);
1057 tlen = MIN (len, 4 - (memaddr & 3));
1058 offset = memaddr & 3;
1060 errcode = target_read_memory (memaddr & ~3, buf, sizeof buf);
1063 /* The transfer request might have crossed the boundary to an
1064 unallocated region of memory. Retry the transfer, requesting
1068 errcode = target_read_memory (memaddr, buf, 1);
1073 if (bufptr - buffer + tlen > buffer_allocated)
1077 bytes = bufptr - buffer;
1078 buffer_allocated *= 2;
1079 buffer = xrealloc (buffer, buffer_allocated);
1080 bufptr = buffer + bytes;
1083 for (i = 0; i < tlen; i++)
1085 *bufptr++ = buf[i + offset];
1086 if (buf[i + offset] == '\000')
1088 nbytes_read += i + 1;
1095 nbytes_read += tlen;
1104 struct target_section_table *
1105 target_get_section_table (struct target_ops *target)
1107 struct target_ops *t;
1110 fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n");
1112 for (t = target; t != NULL; t = t->beneath)
1113 if (t->to_get_section_table != NULL)
1114 return (*t->to_get_section_table) (t);
1119 /* Find a section containing ADDR. */
1121 struct target_section *
1122 target_section_by_addr (struct target_ops *target, CORE_ADDR addr)
1124 struct target_section_table *table = target_get_section_table (target);
1125 struct target_section *secp;
1130 for (secp = table->sections; secp < table->sections_end; secp++)
1132 if (addr >= secp->addr && addr < secp->endaddr)
1138 /* Read memory from the live target, even if currently inspecting a
1139 traceframe. The return is the same as that of target_read. */
1141 static enum target_xfer_status
1142 target_read_live_memory (enum target_object object,
1143 ULONGEST memaddr, gdb_byte *myaddr, ULONGEST len,
1144 ULONGEST *xfered_len)
1146 enum target_xfer_status ret;
1147 struct cleanup *cleanup;
1149 /* Switch momentarily out of tfind mode so to access live memory.
1150 Note that this must not clear global state, such as the frame
1151 cache, which must still remain valid for the previous traceframe.
1152 We may be _building_ the frame cache at this point. */
1153 cleanup = make_cleanup_restore_traceframe_number ();
1154 set_traceframe_number (-1);
1156 ret = target_xfer_partial (current_target.beneath, object, NULL,
1157 myaddr, NULL, memaddr, len, xfered_len);
1159 do_cleanups (cleanup);
1163 /* Using the set of read-only target sections of OPS, read live
1164 read-only memory. Note that the actual reads start from the
1165 top-most target again.
1167 For interface/parameters/return description see target.h,
1170 static enum target_xfer_status
1171 memory_xfer_live_readonly_partial (struct target_ops *ops,
1172 enum target_object object,
1173 gdb_byte *readbuf, ULONGEST memaddr,
1174 ULONGEST len, ULONGEST *xfered_len)
1176 struct target_section *secp;
1177 struct target_section_table *table;
1179 secp = target_section_by_addr (ops, memaddr);
1181 && (bfd_get_section_flags (secp->the_bfd_section->owner,
1182 secp->the_bfd_section)
1185 struct target_section *p;
1186 ULONGEST memend = memaddr + len;
1188 table = target_get_section_table (ops);
1190 for (p = table->sections; p < table->sections_end; p++)
1192 if (memaddr >= p->addr)
1194 if (memend <= p->endaddr)
1196 /* Entire transfer is within this section. */
1197 return target_read_live_memory (object, memaddr,
1198 readbuf, len, xfered_len);
1200 else if (memaddr >= p->endaddr)
1202 /* This section ends before the transfer starts. */
1207 /* This section overlaps the transfer. Just do half. */
1208 len = p->endaddr - memaddr;
1209 return target_read_live_memory (object, memaddr,
1210 readbuf, len, xfered_len);
1216 return TARGET_XFER_EOF;
1219 /* Read memory from more than one valid target. A core file, for
1220 instance, could have some of memory but delegate other bits to
1221 the target below it. So, we must manually try all targets. */
1223 static enum target_xfer_status
1224 raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf,
1225 const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len,
1226 ULONGEST *xfered_len)
1228 enum target_xfer_status res;
1232 res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL,
1233 readbuf, writebuf, memaddr, len,
1235 if (res == TARGET_XFER_OK)
1238 /* Stop if the target reports that the memory is not available. */
1239 if (res == TARGET_XFER_E_UNAVAILABLE)
1242 /* We want to continue past core files to executables, but not
1243 past a running target's memory. */
1244 if (ops->to_has_all_memory (ops))
1249 while (ops != NULL);
1254 /* Perform a partial memory transfer.
1255 For docs see target.h, to_xfer_partial. */
1257 static enum target_xfer_status
1258 memory_xfer_partial_1 (struct target_ops *ops, enum target_object object,
1259 gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr,
1260 ULONGEST len, ULONGEST *xfered_len)
1262 enum target_xfer_status res;
1264 struct mem_region *region;
1265 struct inferior *inf;
1267 /* For accesses to unmapped overlay sections, read directly from
1268 files. Must do this first, as MEMADDR may need adjustment. */
1269 if (readbuf != NULL && overlay_debugging)
1271 struct obj_section *section = find_pc_overlay (memaddr);
1273 if (pc_in_unmapped_range (memaddr, section))
1275 struct target_section_table *table
1276 = target_get_section_table (ops);
1277 const char *section_name = section->the_bfd_section->name;
1279 memaddr = overlay_mapped_address (memaddr, section);
1280 return section_table_xfer_memory_partial (readbuf, writebuf,
1281 memaddr, len, xfered_len,
1283 table->sections_end,
1288 /* Try the executable files, if "trust-readonly-sections" is set. */
1289 if (readbuf != NULL && trust_readonly)
1291 struct target_section *secp;
1292 struct target_section_table *table;
1294 secp = target_section_by_addr (ops, memaddr);
1296 && (bfd_get_section_flags (secp->the_bfd_section->owner,
1297 secp->the_bfd_section)
1300 table = target_get_section_table (ops);
1301 return section_table_xfer_memory_partial (readbuf, writebuf,
1302 memaddr, len, xfered_len,
1304 table->sections_end,
1309 /* If reading unavailable memory in the context of traceframes, and
1310 this address falls within a read-only section, fallback to
1311 reading from live memory. */
1312 if (readbuf != NULL && get_traceframe_number () != -1)
1314 VEC(mem_range_s) *available;
1316 /* If we fail to get the set of available memory, then the
1317 target does not support querying traceframe info, and so we
1318 attempt reading from the traceframe anyway (assuming the
1319 target implements the old QTro packet then). */
1320 if (traceframe_available_memory (&available, memaddr, len))
1322 struct cleanup *old_chain;
1324 old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available);
1326 if (VEC_empty (mem_range_s, available)
1327 || VEC_index (mem_range_s, available, 0)->start != memaddr)
1329 /* Don't read into the traceframe's available
1331 if (!VEC_empty (mem_range_s, available))
1333 LONGEST oldlen = len;
1335 len = VEC_index (mem_range_s, available, 0)->start - memaddr;
1336 gdb_assert (len <= oldlen);
1339 do_cleanups (old_chain);
1341 /* This goes through the topmost target again. */
1342 res = memory_xfer_live_readonly_partial (ops, object,
1345 if (res == TARGET_XFER_OK)
1346 return TARGET_XFER_OK;
1349 /* No use trying further, we know some memory starting
1350 at MEMADDR isn't available. */
1352 return TARGET_XFER_E_UNAVAILABLE;
1356 /* Don't try to read more than how much is available, in
1357 case the target implements the deprecated QTro packet to
1358 cater for older GDBs (the target's knowledge of read-only
1359 sections may be outdated by now). */
1360 len = VEC_index (mem_range_s, available, 0)->length;
1362 do_cleanups (old_chain);
1366 /* Try GDB's internal data cache. */
1367 region = lookup_mem_region (memaddr);
1368 /* region->hi == 0 means there's no upper bound. */
1369 if (memaddr + len < region->hi || region->hi == 0)
1372 reg_len = region->hi - memaddr;
1374 switch (region->attrib.mode)
1377 if (writebuf != NULL)
1378 return TARGET_XFER_E_IO;
1382 if (readbuf != NULL)
1383 return TARGET_XFER_E_IO;
1387 /* We only support writing to flash during "load" for now. */
1388 if (writebuf != NULL)
1389 error (_("Writing to flash memory forbidden in this context"));
1393 return TARGET_XFER_E_IO;
1396 if (!ptid_equal (inferior_ptid, null_ptid))
1397 inf = find_inferior_pid (ptid_get_pid (inferior_ptid));
1402 /* The dcache reads whole cache lines; that doesn't play well
1403 with reading from a trace buffer, because reading outside of
1404 the collected memory range fails. */
1405 && get_traceframe_number () == -1
1406 && (region->attrib.cache
1407 || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY)
1408 || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY)))
1410 DCACHE *dcache = target_dcache_get_or_init ();
1413 if (readbuf != NULL)
1414 l = dcache_xfer_memory (ops, dcache, memaddr, readbuf, reg_len, 0);
1416 /* FIXME drow/2006-08-09: If we're going to preserve const
1417 correctness dcache_xfer_memory should take readbuf and
1419 l = dcache_xfer_memory (ops, dcache, memaddr, (void *) writebuf,
1422 return TARGET_XFER_E_IO;
1425 *xfered_len = (ULONGEST) l;
1426 return TARGET_XFER_OK;
1430 /* If none of those methods found the memory we wanted, fall back
1431 to a target partial transfer. Normally a single call to
1432 to_xfer_partial is enough; if it doesn't recognize an object
1433 it will call the to_xfer_partial of the next target down.
1434 But for memory this won't do. Memory is the only target
1435 object which can be read from more than one valid target.
1436 A core file, for instance, could have some of memory but
1437 delegate other bits to the target below it. So, we must
1438 manually try all targets. */
1440 res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len,
1443 /* Make sure the cache gets updated no matter what - if we are writing
1444 to the stack. Even if this write is not tagged as such, we still need
1445 to update the cache. */
1447 if (res == TARGET_XFER_OK
1450 && target_dcache_init_p ()
1451 && !region->attrib.cache
1452 && ((stack_cache_enabled_p () && object != TARGET_OBJECT_STACK_MEMORY)
1453 || (code_cache_enabled_p () && object != TARGET_OBJECT_CODE_MEMORY)))
1455 DCACHE *dcache = target_dcache_get ();
1457 dcache_update (dcache, memaddr, (void *) writebuf, reg_len);
1460 /* If we still haven't got anything, return the last error. We
1465 /* Perform a partial memory transfer. For docs see target.h,
1468 static enum target_xfer_status
1469 memory_xfer_partial (struct target_ops *ops, enum target_object object,
1470 gdb_byte *readbuf, const gdb_byte *writebuf,
1471 ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len)
1473 enum target_xfer_status res;
1475 /* Zero length requests are ok and require no work. */
1477 return TARGET_XFER_EOF;
1479 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1480 breakpoint insns, thus hiding out from higher layers whether
1481 there are software breakpoints inserted in the code stream. */
1482 if (readbuf != NULL)
1484 res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len,
1487 if (res == TARGET_XFER_OK && !show_memory_breakpoints)
1488 breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, res);
1493 struct cleanup *old_chain;
1495 /* A large write request is likely to be partially satisfied
1496 by memory_xfer_partial_1. We will continually malloc
1497 and free a copy of the entire write request for breakpoint
1498 shadow handling even though we only end up writing a small
1499 subset of it. Cap writes to 4KB to mitigate this. */
1500 len = min (4096, len);
1502 buf = xmalloc (len);
1503 old_chain = make_cleanup (xfree, buf);
1504 memcpy (buf, writebuf, len);
1506 breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len);
1507 res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len,
1510 do_cleanups (old_chain);
1517 restore_show_memory_breakpoints (void *arg)
1519 show_memory_breakpoints = (uintptr_t) arg;
1523 make_show_memory_breakpoints_cleanup (int show)
1525 int current = show_memory_breakpoints;
1527 show_memory_breakpoints = show;
1528 return make_cleanup (restore_show_memory_breakpoints,
1529 (void *) (uintptr_t) current);
1532 /* For docs see target.h, to_xfer_partial. */
1534 enum target_xfer_status
1535 target_xfer_partial (struct target_ops *ops,
1536 enum target_object object, const char *annex,
1537 gdb_byte *readbuf, const gdb_byte *writebuf,
1538 ULONGEST offset, ULONGEST len,
1539 ULONGEST *xfered_len)
1541 enum target_xfer_status retval;
1543 gdb_assert (ops->to_xfer_partial != NULL);
1545 /* Transfer is done when LEN is zero. */
1547 return TARGET_XFER_EOF;
1549 if (writebuf && !may_write_memory)
1550 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1551 core_addr_to_string_nz (offset), plongest (len));
1555 /* If this is a memory transfer, let the memory-specific code
1556 have a look at it instead. Memory transfers are more
1558 if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY
1559 || object == TARGET_OBJECT_CODE_MEMORY)
1560 retval = memory_xfer_partial (ops, object, readbuf,
1561 writebuf, offset, len, xfered_len);
1562 else if (object == TARGET_OBJECT_RAW_MEMORY)
1564 /* Request the normal memory object from other layers. */
1565 retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len,
1569 retval = ops->to_xfer_partial (ops, object, annex, readbuf,
1570 writebuf, offset, len, xfered_len);
1574 const unsigned char *myaddr = NULL;
1576 fprintf_unfiltered (gdb_stdlog,
1577 "%s:target_xfer_partial "
1578 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1581 (annex ? annex : "(null)"),
1582 host_address_to_string (readbuf),
1583 host_address_to_string (writebuf),
1584 core_addr_to_string_nz (offset),
1585 pulongest (len), retval,
1586 pulongest (*xfered_len));
1592 if (retval == TARGET_XFER_OK && myaddr != NULL)
1596 fputs_unfiltered (", bytes =", gdb_stdlog);
1597 for (i = 0; i < *xfered_len; i++)
1599 if ((((intptr_t) &(myaddr[i])) & 0xf) == 0)
1601 if (targetdebug < 2 && i > 0)
1603 fprintf_unfiltered (gdb_stdlog, " ...");
1606 fprintf_unfiltered (gdb_stdlog, "\n");
1609 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
1613 fputc_unfiltered ('\n', gdb_stdlog);
1616 /* Check implementations of to_xfer_partial update *XFERED_LEN
1617 properly. Do assertion after printing debug messages, so that we
1618 can find more clues on assertion failure from debugging messages. */
1619 if (retval == TARGET_XFER_OK || retval == TARGET_XFER_E_UNAVAILABLE)
1620 gdb_assert (*xfered_len > 0);
1625 /* Read LEN bytes of target memory at address MEMADDR, placing the
1626 results in GDB's memory at MYADDR. Returns either 0 for success or
1627 TARGET_XFER_E_IO if any error occurs.
1629 If an error occurs, no guarantee is made about the contents of the data at
1630 MYADDR. In particular, the caller should not depend upon partial reads
1631 filling the buffer with good data. There is no way for the caller to know
1632 how much good data might have been transfered anyway. Callers that can
1633 deal with partial reads should call target_read (which will retry until
1634 it makes no progress, and then return how much was transferred). */
1637 target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1639 /* Dispatch to the topmost target, not the flattened current_target.
1640 Memory accesses check target->to_has_(all_)memory, and the
1641 flattened target doesn't inherit those. */
1642 if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL,
1643 myaddr, memaddr, len) == len)
1646 return TARGET_XFER_E_IO;
1649 /* Like target_read_memory, but specify explicitly that this is a read
1650 from the target's raw memory. That is, this read bypasses the
1651 dcache, breakpoint shadowing, etc. */
1654 target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1656 /* See comment in target_read_memory about why the request starts at
1657 current_target.beneath. */
1658 if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL,
1659 myaddr, memaddr, len) == len)
1662 return TARGET_XFER_E_IO;
1665 /* Like target_read_memory, but specify explicitly that this is a read from
1666 the target's stack. This may trigger different cache behavior. */
1669 target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1671 /* See comment in target_read_memory about why the request starts at
1672 current_target.beneath. */
1673 if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL,
1674 myaddr, memaddr, len) == len)
1677 return TARGET_XFER_E_IO;
1680 /* Like target_read_memory, but specify explicitly that this is a read from
1681 the target's code. This may trigger different cache behavior. */
1684 target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1686 /* See comment in target_read_memory about why the request starts at
1687 current_target.beneath. */
1688 if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL,
1689 myaddr, memaddr, len) == len)
1692 return TARGET_XFER_E_IO;
1695 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1696 Returns either 0 for success or TARGET_XFER_E_IO if any
1697 error occurs. If an error occurs, no guarantee is made about how
1698 much data got written. Callers that can deal with partial writes
1699 should call target_write. */
1702 target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
1704 /* See comment in target_read_memory about why the request starts at
1705 current_target.beneath. */
1706 if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL,
1707 myaddr, memaddr, len) == len)
1710 return TARGET_XFER_E_IO;
1713 /* Write LEN bytes from MYADDR to target raw memory at address
1714 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1715 if any error occurs. If an error occurs, no guarantee is made
1716 about how much data got written. Callers that can deal with
1717 partial writes should call target_write. */
1720 target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
1722 /* See comment in target_read_memory about why the request starts at
1723 current_target.beneath. */
1724 if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL,
1725 myaddr, memaddr, len) == len)
1728 return TARGET_XFER_E_IO;
1731 /* Fetch the target's memory map. */
1734 target_memory_map (void)
1736 VEC(mem_region_s) *result;
1737 struct mem_region *last_one, *this_one;
1739 struct target_ops *t;
1742 fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n");
1744 for (t = current_target.beneath; t != NULL; t = t->beneath)
1745 if (t->to_memory_map != NULL)
1751 result = t->to_memory_map (t);
1755 qsort (VEC_address (mem_region_s, result),
1756 VEC_length (mem_region_s, result),
1757 sizeof (struct mem_region), mem_region_cmp);
1759 /* Check that regions do not overlap. Simultaneously assign
1760 a numbering for the "mem" commands to use to refer to
1763 for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++)
1765 this_one->number = ix;
1767 if (last_one && last_one->hi > this_one->lo)
1769 warning (_("Overlapping regions in memory map: ignoring"));
1770 VEC_free (mem_region_s, result);
1773 last_one = this_one;
1780 target_flash_erase (ULONGEST address, LONGEST length)
1782 struct target_ops *t;
1784 for (t = current_target.beneath; t != NULL; t = t->beneath)
1785 if (t->to_flash_erase != NULL)
1788 fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n",
1789 hex_string (address), phex (length, 0));
1790 t->to_flash_erase (t, address, length);
1798 target_flash_done (void)
1800 struct target_ops *t;
1802 for (t = current_target.beneath; t != NULL; t = t->beneath)
1803 if (t->to_flash_done != NULL)
1806 fprintf_unfiltered (gdb_stdlog, "target_flash_done\n");
1807 t->to_flash_done (t);
1815 show_trust_readonly (struct ui_file *file, int from_tty,
1816 struct cmd_list_element *c, const char *value)
1818 fprintf_filtered (file,
1819 _("Mode for reading from readonly sections is %s.\n"),
1823 /* More generic transfers. */
1825 static enum target_xfer_status
1826 default_xfer_partial (struct target_ops *ops, enum target_object object,
1827 const char *annex, gdb_byte *readbuf,
1828 const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
1829 ULONGEST *xfered_len)
1831 if (object == TARGET_OBJECT_MEMORY
1832 && ops->deprecated_xfer_memory != NULL)
1833 /* If available, fall back to the target's
1834 "deprecated_xfer_memory" method. */
1839 if (writebuf != NULL)
1841 void *buffer = xmalloc (len);
1842 struct cleanup *cleanup = make_cleanup (xfree, buffer);
1844 memcpy (buffer, writebuf, len);
1845 xfered = ops->deprecated_xfer_memory (offset, buffer, len,
1846 1/*write*/, NULL, ops);
1847 do_cleanups (cleanup);
1849 if (readbuf != NULL)
1850 xfered = ops->deprecated_xfer_memory (offset, readbuf, len,
1851 0/*read*/, NULL, ops);
1854 *xfered_len = (ULONGEST) xfered;
1855 return TARGET_XFER_E_IO;
1857 else if (xfered == 0 && errno == 0)
1858 /* "deprecated_xfer_memory" uses 0, cross checked against
1859 ERRNO as one indication of an error. */
1860 return TARGET_XFER_EOF;
1862 return TARGET_XFER_E_IO;
1866 gdb_assert (ops->beneath != NULL);
1867 return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
1868 readbuf, writebuf, offset, len,
1873 /* Target vector read/write partial wrapper functions. */
1875 static enum target_xfer_status
1876 target_read_partial (struct target_ops *ops,
1877 enum target_object object,
1878 const char *annex, gdb_byte *buf,
1879 ULONGEST offset, ULONGEST len,
1880 ULONGEST *xfered_len)
1882 return target_xfer_partial (ops, object, annex, buf, NULL, offset, len,
1886 static enum target_xfer_status
1887 target_write_partial (struct target_ops *ops,
1888 enum target_object object,
1889 const char *annex, const gdb_byte *buf,
1890 ULONGEST offset, LONGEST len, ULONGEST *xfered_len)
1892 return target_xfer_partial (ops, object, annex, NULL, buf, offset, len,
1896 /* Wrappers to perform the full transfer. */
1898 /* For docs on target_read see target.h. */
1901 target_read (struct target_ops *ops,
1902 enum target_object object,
1903 const char *annex, gdb_byte *buf,
1904 ULONGEST offset, LONGEST len)
1908 while (xfered < len)
1910 ULONGEST xfered_len;
1911 enum target_xfer_status status;
1913 status = target_read_partial (ops, object, annex,
1914 (gdb_byte *) buf + xfered,
1915 offset + xfered, len - xfered,
1918 /* Call an observer, notifying them of the xfer progress? */
1919 if (status == TARGET_XFER_EOF)
1921 else if (status == TARGET_XFER_OK)
1923 xfered += xfered_len;
1933 /* Assuming that the entire [begin, end) range of memory cannot be
1934 read, try to read whatever subrange is possible to read.
1936 The function returns, in RESULT, either zero or one memory block.
1937 If there's a readable subrange at the beginning, it is completely
1938 read and returned. Any further readable subrange will not be read.
1939 Otherwise, if there's a readable subrange at the end, it will be
1940 completely read and returned. Any readable subranges before it
1941 (obviously, not starting at the beginning), will be ignored. In
1942 other cases -- either no readable subrange, or readable subrange(s)
1943 that is neither at the beginning, or end, nothing is returned.
1945 The purpose of this function is to handle a read across a boundary
1946 of accessible memory in a case when memory map is not available.
1947 The above restrictions are fine for this case, but will give
1948 incorrect results if the memory is 'patchy'. However, supporting
1949 'patchy' memory would require trying to read every single byte,
1950 and it seems unacceptable solution. Explicit memory map is
1951 recommended for this case -- and target_read_memory_robust will
1952 take care of reading multiple ranges then. */
1955 read_whatever_is_readable (struct target_ops *ops,
1956 ULONGEST begin, ULONGEST end,
1957 VEC(memory_read_result_s) **result)
1959 gdb_byte *buf = xmalloc (end - begin);
1960 ULONGEST current_begin = begin;
1961 ULONGEST current_end = end;
1963 memory_read_result_s r;
1964 ULONGEST xfered_len;
1966 /* If we previously failed to read 1 byte, nothing can be done here. */
1967 if (end - begin <= 1)
1973 /* Check that either first or the last byte is readable, and give up
1974 if not. This heuristic is meant to permit reading accessible memory
1975 at the boundary of accessible region. */
1976 if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL,
1977 buf, begin, 1, &xfered_len) == TARGET_XFER_OK)
1982 else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL,
1983 buf + (end-begin) - 1, end - 1, 1,
1984 &xfered_len) == TARGET_XFER_OK)
1995 /* Loop invariant is that the [current_begin, current_end) was previously
1996 found to be not readable as a whole.
1998 Note loop condition -- if the range has 1 byte, we can't divide the range
1999 so there's no point trying further. */
2000 while (current_end - current_begin > 1)
2002 ULONGEST first_half_begin, first_half_end;
2003 ULONGEST second_half_begin, second_half_end;
2005 ULONGEST middle = current_begin + (current_end - current_begin)/2;
2009 first_half_begin = current_begin;
2010 first_half_end = middle;
2011 second_half_begin = middle;
2012 second_half_end = current_end;
2016 first_half_begin = middle;
2017 first_half_end = current_end;
2018 second_half_begin = current_begin;
2019 second_half_end = middle;
2022 xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2023 buf + (first_half_begin - begin),
2025 first_half_end - first_half_begin);
2027 if (xfer == first_half_end - first_half_begin)
2029 /* This half reads up fine. So, the error must be in the
2031 current_begin = second_half_begin;
2032 current_end = second_half_end;
2036 /* This half is not readable. Because we've tried one byte, we
2037 know some part of this half if actually redable. Go to the next
2038 iteration to divide again and try to read.
2040 We don't handle the other half, because this function only tries
2041 to read a single readable subrange. */
2042 current_begin = first_half_begin;
2043 current_end = first_half_end;
2049 /* The [begin, current_begin) range has been read. */
2051 r.end = current_begin;
2056 /* The [current_end, end) range has been read. */
2057 LONGEST rlen = end - current_end;
2059 r.data = xmalloc (rlen);
2060 memcpy (r.data, buf + current_end - begin, rlen);
2061 r.begin = current_end;
2065 VEC_safe_push(memory_read_result_s, (*result), &r);
2069 free_memory_read_result_vector (void *x)
2071 VEC(memory_read_result_s) *v = x;
2072 memory_read_result_s *current;
2075 for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix)
2077 xfree (current->data);
2079 VEC_free (memory_read_result_s, v);
2082 VEC(memory_read_result_s) *
2083 read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len)
2085 VEC(memory_read_result_s) *result = 0;
2088 while (xfered < len)
2090 struct mem_region *region = lookup_mem_region (offset + xfered);
2093 /* If there is no explicit region, a fake one should be created. */
2094 gdb_assert (region);
2096 if (region->hi == 0)
2097 rlen = len - xfered;
2099 rlen = region->hi - offset;
2101 if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO)
2103 /* Cannot read this region. Note that we can end up here only
2104 if the region is explicitly marked inaccessible, or
2105 'inaccessible-by-default' is in effect. */
2110 LONGEST to_read = min (len - xfered, rlen);
2111 gdb_byte *buffer = (gdb_byte *)xmalloc (to_read);
2113 LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2114 (gdb_byte *) buffer,
2115 offset + xfered, to_read);
2116 /* Call an observer, notifying them of the xfer progress? */
2119 /* Got an error reading full chunk. See if maybe we can read
2122 read_whatever_is_readable (ops, offset + xfered,
2123 offset + xfered + to_read, &result);
2128 struct memory_read_result r;
2130 r.begin = offset + xfered;
2131 r.end = r.begin + xfer;
2132 VEC_safe_push (memory_read_result_s, result, &r);
2142 /* An alternative to target_write with progress callbacks. */
2145 target_write_with_progress (struct target_ops *ops,
2146 enum target_object object,
2147 const char *annex, const gdb_byte *buf,
2148 ULONGEST offset, LONGEST len,
2149 void (*progress) (ULONGEST, void *), void *baton)
2153 /* Give the progress callback a chance to set up. */
2155 (*progress) (0, baton);
2157 while (xfered < len)
2159 ULONGEST xfered_len;
2160 enum target_xfer_status status;
2162 status = target_write_partial (ops, object, annex,
2163 (gdb_byte *) buf + xfered,
2164 offset + xfered, len - xfered,
2167 if (status == TARGET_XFER_EOF)
2169 if (TARGET_XFER_STATUS_ERROR_P (status))
2172 gdb_assert (status == TARGET_XFER_OK);
2174 (*progress) (xfered_len, baton);
2176 xfered += xfered_len;
2182 /* For docs on target_write see target.h. */
2185 target_write (struct target_ops *ops,
2186 enum target_object object,
2187 const char *annex, const gdb_byte *buf,
2188 ULONGEST offset, LONGEST len)
2190 return target_write_with_progress (ops, object, annex, buf, offset, len,
2194 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2195 the size of the transferred data. PADDING additional bytes are
2196 available in *BUF_P. This is a helper function for
2197 target_read_alloc; see the declaration of that function for more
2201 target_read_alloc_1 (struct target_ops *ops, enum target_object object,
2202 const char *annex, gdb_byte **buf_p, int padding)
2204 size_t buf_alloc, buf_pos;
2207 /* This function does not have a length parameter; it reads the
2208 entire OBJECT). Also, it doesn't support objects fetched partly
2209 from one target and partly from another (in a different stratum,
2210 e.g. a core file and an executable). Both reasons make it
2211 unsuitable for reading memory. */
2212 gdb_assert (object != TARGET_OBJECT_MEMORY);
2214 /* Start by reading up to 4K at a time. The target will throttle
2215 this number down if necessary. */
2217 buf = xmalloc (buf_alloc);
2221 ULONGEST xfered_len;
2222 enum target_xfer_status status;
2224 status = target_read_partial (ops, object, annex, &buf[buf_pos],
2225 buf_pos, buf_alloc - buf_pos - padding,
2228 if (status == TARGET_XFER_EOF)
2230 /* Read all there was. */
2237 else if (status != TARGET_XFER_OK)
2239 /* An error occurred. */
2241 return TARGET_XFER_E_IO;
2244 buf_pos += xfered_len;
2246 /* If the buffer is filling up, expand it. */
2247 if (buf_alloc < buf_pos * 2)
2250 buf = xrealloc (buf, buf_alloc);
2257 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2258 the size of the transferred data. See the declaration in "target.h"
2259 function for more information about the return value. */
2262 target_read_alloc (struct target_ops *ops, enum target_object object,
2263 const char *annex, gdb_byte **buf_p)
2265 return target_read_alloc_1 (ops, object, annex, buf_p, 0);
2268 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2269 returned as a string, allocated using xmalloc. If an error occurs
2270 or the transfer is unsupported, NULL is returned. Empty objects
2271 are returned as allocated but empty strings. A warning is issued
2272 if the result contains any embedded NUL bytes. */
2275 target_read_stralloc (struct target_ops *ops, enum target_object object,
2280 LONGEST i, transferred;
2282 transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1);
2283 bufstr = (char *) buffer;
2285 if (transferred < 0)
2288 if (transferred == 0)
2289 return xstrdup ("");
2291 bufstr[transferred] = 0;
2293 /* Check for embedded NUL bytes; but allow trailing NULs. */
2294 for (i = strlen (bufstr); i < transferred; i++)
2297 warning (_("target object %d, annex %s, "
2298 "contained unexpected null characters"),
2299 (int) object, annex ? annex : "(none)");
2306 /* Memory transfer methods. */
2309 get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf,
2312 /* This method is used to read from an alternate, non-current
2313 target. This read must bypass the overlay support (as symbols
2314 don't match this target), and GDB's internal cache (wrong cache
2315 for this target). */
2316 if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len)
2318 memory_error (TARGET_XFER_E_IO, addr);
2322 get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr,
2323 int len, enum bfd_endian byte_order)
2325 gdb_byte buf[sizeof (ULONGEST)];
2327 gdb_assert (len <= sizeof (buf));
2328 get_target_memory (ops, addr, buf, len);
2329 return extract_unsigned_integer (buf, len, byte_order);
2335 target_insert_breakpoint (struct gdbarch *gdbarch,
2336 struct bp_target_info *bp_tgt)
2338 if (!may_insert_breakpoints)
2340 warning (_("May not insert breakpoints"));
2344 return current_target.to_insert_breakpoint (¤t_target,
2351 target_remove_breakpoint (struct gdbarch *gdbarch,
2352 struct bp_target_info *bp_tgt)
2354 /* This is kind of a weird case to handle, but the permission might
2355 have been changed after breakpoints were inserted - in which case
2356 we should just take the user literally and assume that any
2357 breakpoints should be left in place. */
2358 if (!may_insert_breakpoints)
2360 warning (_("May not remove breakpoints"));
2364 return current_target.to_remove_breakpoint (¤t_target,
2369 target_info (char *args, int from_tty)
2371 struct target_ops *t;
2372 int has_all_mem = 0;
2374 if (symfile_objfile != NULL)
2375 printf_unfiltered (_("Symbols from \"%s\".\n"),
2376 objfile_name (symfile_objfile));
2378 for (t = target_stack; t != NULL; t = t->beneath)
2380 if (!(*t->to_has_memory) (t))
2383 if ((int) (t->to_stratum) <= (int) dummy_stratum)
2386 printf_unfiltered (_("\tWhile running this, "
2387 "GDB does not access memory from...\n"));
2388 printf_unfiltered ("%s:\n", t->to_longname);
2389 (t->to_files_info) (t);
2390 has_all_mem = (*t->to_has_all_memory) (t);
2394 /* This function is called before any new inferior is created, e.g.
2395 by running a program, attaching, or connecting to a target.
2396 It cleans up any state from previous invocations which might
2397 change between runs. This is a subset of what target_preopen
2398 resets (things which might change between targets). */
2401 target_pre_inferior (int from_tty)
2403 /* Clear out solib state. Otherwise the solib state of the previous
2404 inferior might have survived and is entirely wrong for the new
2405 target. This has been observed on GNU/Linux using glibc 2.3. How
2417 Cannot access memory at address 0xdeadbeef
2420 /* In some OSs, the shared library list is the same/global/shared
2421 across inferiors. If code is shared between processes, so are
2422 memory regions and features. */
2423 if (!gdbarch_has_global_solist (target_gdbarch ()))
2425 no_shared_libraries (NULL, from_tty);
2427 invalidate_target_mem_regions ();
2429 target_clear_description ();
2432 agent_capability_invalidate ();
2435 /* Callback for iterate_over_inferiors. Gets rid of the given
2439 dispose_inferior (struct inferior *inf, void *args)
2441 struct thread_info *thread;
2443 thread = any_thread_of_process (inf->pid);
2446 switch_to_thread (thread->ptid);
2448 /* Core inferiors actually should be detached, not killed. */
2449 if (target_has_execution)
2452 target_detach (NULL, 0);
2458 /* This is to be called by the open routine before it does
2462 target_preopen (int from_tty)
2466 if (have_inferiors ())
2469 || !have_live_inferiors ()
2470 || query (_("A program is being debugged already. Kill it? ")))
2471 iterate_over_inferiors (dispose_inferior, NULL);
2473 error (_("Program not killed."));
2476 /* Calling target_kill may remove the target from the stack. But if
2477 it doesn't (which seems like a win for UDI), remove it now. */
2478 /* Leave the exec target, though. The user may be switching from a
2479 live process to a core of the same program. */
2480 pop_all_targets_above (file_stratum);
2482 target_pre_inferior (from_tty);
2485 /* Detach a target after doing deferred register stores. */
2488 target_detach (const char *args, int from_tty)
2490 struct target_ops* t;
2492 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2493 /* Don't remove global breakpoints here. They're removed on
2494 disconnection from the target. */
2497 /* If we're in breakpoints-always-inserted mode, have to remove
2498 them before detaching. */
2499 remove_breakpoints_pid (ptid_get_pid (inferior_ptid));
2501 prepare_for_detach ();
2503 current_target.to_detach (¤t_target, args, from_tty);
2505 fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n",
2510 target_disconnect (char *args, int from_tty)
2512 struct target_ops *t;
2514 /* If we're in breakpoints-always-inserted mode or if breakpoints
2515 are global across processes, we have to remove them before
2517 remove_breakpoints ();
2519 for (t = current_target.beneath; t != NULL; t = t->beneath)
2520 if (t->to_disconnect != NULL)
2523 fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n",
2525 t->to_disconnect (t, args, from_tty);
2533 target_wait (ptid_t ptid, struct target_waitstatus *status, int options)
2535 struct target_ops *t;
2536 ptid_t retval = (current_target.to_wait) (¤t_target, ptid,
2541 char *status_string;
2542 char *options_string;
2544 status_string = target_waitstatus_to_string (status);
2545 options_string = target_options_to_string (options);
2546 fprintf_unfiltered (gdb_stdlog,
2547 "target_wait (%d, status, options={%s})"
2549 ptid_get_pid (ptid), options_string,
2550 ptid_get_pid (retval), status_string);
2551 xfree (status_string);
2552 xfree (options_string);
2559 target_pid_to_str (ptid_t ptid)
2561 struct target_ops *t;
2563 for (t = current_target.beneath; t != NULL; t = t->beneath)
2565 if (t->to_pid_to_str != NULL)
2566 return (*t->to_pid_to_str) (t, ptid);
2569 return normal_pid_to_str (ptid);
2573 target_thread_name (struct thread_info *info)
2575 return current_target.to_thread_name (¤t_target, info);
2579 target_resume (ptid_t ptid, int step, enum gdb_signal signal)
2581 struct target_ops *t;
2583 target_dcache_invalidate ();
2585 current_target.to_resume (¤t_target, ptid, step, signal);
2587 fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n",
2588 ptid_get_pid (ptid),
2589 step ? "step" : "continue",
2590 gdb_signal_to_name (signal));
2592 registers_changed_ptid (ptid);
2593 set_executing (ptid, 1);
2594 set_running (ptid, 1);
2595 clear_inline_frame_state (ptid);
2599 target_pass_signals (int numsigs, unsigned char *pass_signals)
2601 struct target_ops *t;
2603 for (t = current_target.beneath; t != NULL; t = t->beneath)
2605 if (t->to_pass_signals != NULL)
2611 fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {",
2614 for (i = 0; i < numsigs; i++)
2615 if (pass_signals[i])
2616 fprintf_unfiltered (gdb_stdlog, " %s",
2617 gdb_signal_to_name (i));
2619 fprintf_unfiltered (gdb_stdlog, " })\n");
2622 (*t->to_pass_signals) (t, numsigs, pass_signals);
2629 target_program_signals (int numsigs, unsigned char *program_signals)
2631 struct target_ops *t;
2633 for (t = current_target.beneath; t != NULL; t = t->beneath)
2635 if (t->to_program_signals != NULL)
2641 fprintf_unfiltered (gdb_stdlog, "target_program_signals (%d, {",
2644 for (i = 0; i < numsigs; i++)
2645 if (program_signals[i])
2646 fprintf_unfiltered (gdb_stdlog, " %s",
2647 gdb_signal_to_name (i));
2649 fprintf_unfiltered (gdb_stdlog, " })\n");
2652 (*t->to_program_signals) (t, numsigs, program_signals);
2658 /* Look through the list of possible targets for a target that can
2662 target_follow_fork (int follow_child, int detach_fork)
2664 struct target_ops *t;
2666 for (t = current_target.beneath; t != NULL; t = t->beneath)
2668 if (t->to_follow_fork != NULL)
2670 int retval = t->to_follow_fork (t, follow_child, detach_fork);
2673 fprintf_unfiltered (gdb_stdlog,
2674 "target_follow_fork (%d, %d) = %d\n",
2675 follow_child, detach_fork, retval);
2680 /* Some target returned a fork event, but did not know how to follow it. */
2681 internal_error (__FILE__, __LINE__,
2682 _("could not find a target to follow fork"));
2686 target_mourn_inferior (void)
2688 struct target_ops *t;
2690 for (t = current_target.beneath; t != NULL; t = t->beneath)
2692 if (t->to_mourn_inferior != NULL)
2694 t->to_mourn_inferior (t);
2696 fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n");
2698 /* We no longer need to keep handles on any of the object files.
2699 Make sure to release them to avoid unnecessarily locking any
2700 of them while we're not actually debugging. */
2701 bfd_cache_close_all ();
2707 internal_error (__FILE__, __LINE__,
2708 _("could not find a target to follow mourn inferior"));
2711 /* Look for a target which can describe architectural features, starting
2712 from TARGET. If we find one, return its description. */
2714 const struct target_desc *
2715 target_read_description (struct target_ops *target)
2717 struct target_ops *t;
2719 for (t = target; t != NULL; t = t->beneath)
2720 if (t->to_read_description != NULL)
2722 const struct target_desc *tdesc;
2724 tdesc = t->to_read_description (t);
2732 /* The default implementation of to_search_memory.
2733 This implements a basic search of memory, reading target memory and
2734 performing the search here (as opposed to performing the search in on the
2735 target side with, for example, gdbserver). */
2738 simple_search_memory (struct target_ops *ops,
2739 CORE_ADDR start_addr, ULONGEST search_space_len,
2740 const gdb_byte *pattern, ULONGEST pattern_len,
2741 CORE_ADDR *found_addrp)
2743 /* NOTE: also defined in find.c testcase. */
2744 #define SEARCH_CHUNK_SIZE 16000
2745 const unsigned chunk_size = SEARCH_CHUNK_SIZE;
2746 /* Buffer to hold memory contents for searching. */
2747 gdb_byte *search_buf;
2748 unsigned search_buf_size;
2749 struct cleanup *old_cleanups;
2751 search_buf_size = chunk_size + pattern_len - 1;
2753 /* No point in trying to allocate a buffer larger than the search space. */
2754 if (search_space_len < search_buf_size)
2755 search_buf_size = search_space_len;
2757 search_buf = malloc (search_buf_size);
2758 if (search_buf == NULL)
2759 error (_("Unable to allocate memory to perform the search."));
2760 old_cleanups = make_cleanup (free_current_contents, &search_buf);
2762 /* Prime the search buffer. */
2764 if (target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2765 search_buf, start_addr, search_buf_size) != search_buf_size)
2767 warning (_("Unable to access %s bytes of target "
2768 "memory at %s, halting search."),
2769 pulongest (search_buf_size), hex_string (start_addr));
2770 do_cleanups (old_cleanups);
2774 /* Perform the search.
2776 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2777 When we've scanned N bytes we copy the trailing bytes to the start and
2778 read in another N bytes. */
2780 while (search_space_len >= pattern_len)
2782 gdb_byte *found_ptr;
2783 unsigned nr_search_bytes = min (search_space_len, search_buf_size);
2785 found_ptr = memmem (search_buf, nr_search_bytes,
2786 pattern, pattern_len);
2788 if (found_ptr != NULL)
2790 CORE_ADDR found_addr = start_addr + (found_ptr - search_buf);
2792 *found_addrp = found_addr;
2793 do_cleanups (old_cleanups);
2797 /* Not found in this chunk, skip to next chunk. */
2799 /* Don't let search_space_len wrap here, it's unsigned. */
2800 if (search_space_len >= chunk_size)
2801 search_space_len -= chunk_size;
2803 search_space_len = 0;
2805 if (search_space_len >= pattern_len)
2807 unsigned keep_len = search_buf_size - chunk_size;
2808 CORE_ADDR read_addr = start_addr + chunk_size + keep_len;
2811 /* Copy the trailing part of the previous iteration to the front
2812 of the buffer for the next iteration. */
2813 gdb_assert (keep_len == pattern_len - 1);
2814 memcpy (search_buf, search_buf + chunk_size, keep_len);
2816 nr_to_read = min (search_space_len - keep_len, chunk_size);
2818 if (target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2819 search_buf + keep_len, read_addr,
2820 nr_to_read) != nr_to_read)
2822 warning (_("Unable to access %s bytes of target "
2823 "memory at %s, halting search."),
2824 plongest (nr_to_read),
2825 hex_string (read_addr));
2826 do_cleanups (old_cleanups);
2830 start_addr += chunk_size;
2836 do_cleanups (old_cleanups);
2840 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2841 sequence of bytes in PATTERN with length PATTERN_LEN.
2843 The result is 1 if found, 0 if not found, and -1 if there was an error
2844 requiring halting of the search (e.g. memory read error).
2845 If the pattern is found the address is recorded in FOUND_ADDRP. */
2848 target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len,
2849 const gdb_byte *pattern, ULONGEST pattern_len,
2850 CORE_ADDR *found_addrp)
2852 struct target_ops *t;
2855 /* We don't use INHERIT to set current_target.to_search_memory,
2856 so we have to scan the target stack and handle targetdebug
2860 fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n",
2861 hex_string (start_addr));
2863 for (t = current_target.beneath; t != NULL; t = t->beneath)
2864 if (t->to_search_memory != NULL)
2869 found = t->to_search_memory (t, start_addr, search_space_len,
2870 pattern, pattern_len, found_addrp);
2874 /* If a special version of to_search_memory isn't available, use the
2876 found = simple_search_memory (current_target.beneath,
2877 start_addr, search_space_len,
2878 pattern, pattern_len, found_addrp);
2882 fprintf_unfiltered (gdb_stdlog, " = %d\n", found);
2887 /* Look through the currently pushed targets. If none of them will
2888 be able to restart the currently running process, issue an error
2892 target_require_runnable (void)
2894 struct target_ops *t;
2896 for (t = target_stack; t != NULL; t = t->beneath)
2898 /* If this target knows how to create a new program, then
2899 assume we will still be able to after killing the current
2900 one. Either killing and mourning will not pop T, or else
2901 find_default_run_target will find it again. */
2902 if (t->to_create_inferior != NULL)
2905 /* Do not worry about thread_stratum targets that can not
2906 create inferiors. Assume they will be pushed again if
2907 necessary, and continue to the process_stratum. */
2908 if (t->to_stratum == thread_stratum
2909 || t->to_stratum == arch_stratum)
2912 error (_("The \"%s\" target does not support \"run\". "
2913 "Try \"help target\" or \"continue\"."),
2917 /* This function is only called if the target is running. In that
2918 case there should have been a process_stratum target and it
2919 should either know how to create inferiors, or not... */
2920 internal_error (__FILE__, __LINE__, _("No targets found"));
2923 /* Look through the list of possible targets for a target that can
2924 execute a run or attach command without any other data. This is
2925 used to locate the default process stratum.
2927 If DO_MESG is not NULL, the result is always valid (error() is
2928 called for errors); else, return NULL on error. */
2930 static struct target_ops *
2931 find_default_run_target (char *do_mesg)
2933 struct target_ops **t;
2934 struct target_ops *runable = NULL;
2939 for (t = target_structs; t < target_structs + target_struct_size;
2942 if ((*t)->to_can_run && target_can_run (*t))
2952 error (_("Don't know how to %s. Try \"help target\"."), do_mesg);
2961 find_default_attach (struct target_ops *ops, char *args, int from_tty)
2963 struct target_ops *t;
2965 t = find_default_run_target ("attach");
2966 (t->to_attach) (t, args, from_tty);
2971 find_default_create_inferior (struct target_ops *ops,
2972 char *exec_file, char *allargs, char **env,
2975 struct target_ops *t;
2977 t = find_default_run_target ("run");
2978 (t->to_create_inferior) (t, exec_file, allargs, env, from_tty);
2983 find_default_can_async_p (struct target_ops *ignore)
2985 struct target_ops *t;
2987 /* This may be called before the target is pushed on the stack;
2988 look for the default process stratum. If there's none, gdb isn't
2989 configured with a native debugger, and target remote isn't
2991 t = find_default_run_target (NULL);
2992 if (t && t->to_can_async_p != delegate_can_async_p)
2993 return (t->to_can_async_p) (t);
2998 find_default_is_async_p (struct target_ops *ignore)
3000 struct target_ops *t;
3002 /* This may be called before the target is pushed on the stack;
3003 look for the default process stratum. If there's none, gdb isn't
3004 configured with a native debugger, and target remote isn't
3006 t = find_default_run_target (NULL);
3007 if (t && t->to_is_async_p != delegate_is_async_p)
3008 return (t->to_is_async_p) (t);
3013 find_default_supports_non_stop (struct target_ops *self)
3015 struct target_ops *t;
3017 t = find_default_run_target (NULL);
3018 if (t && t->to_supports_non_stop)
3019 return (t->to_supports_non_stop) (t);
3024 target_supports_non_stop (void)
3026 struct target_ops *t;
3028 for (t = ¤t_target; t != NULL; t = t->beneath)
3029 if (t->to_supports_non_stop)
3030 return t->to_supports_non_stop (t);
3035 /* Implement the "info proc" command. */
3038 target_info_proc (char *args, enum info_proc_what what)
3040 struct target_ops *t;
3042 /* If we're already connected to something that can get us OS
3043 related data, use it. Otherwise, try using the native
3045 if (current_target.to_stratum >= process_stratum)
3046 t = current_target.beneath;
3048 t = find_default_run_target (NULL);
3050 for (; t != NULL; t = t->beneath)
3052 if (t->to_info_proc != NULL)
3054 t->to_info_proc (t, args, what);
3057 fprintf_unfiltered (gdb_stdlog,
3058 "target_info_proc (\"%s\", %d)\n", args, what);
3068 find_default_supports_disable_randomization (struct target_ops *self)
3070 struct target_ops *t;
3072 t = find_default_run_target (NULL);
3073 if (t && t->to_supports_disable_randomization)
3074 return (t->to_supports_disable_randomization) (t);
3079 target_supports_disable_randomization (void)
3081 struct target_ops *t;
3083 for (t = ¤t_target; t != NULL; t = t->beneath)
3084 if (t->to_supports_disable_randomization)
3085 return t->to_supports_disable_randomization (t);
3091 target_get_osdata (const char *type)
3093 struct target_ops *t;
3095 /* If we're already connected to something that can get us OS
3096 related data, use it. Otherwise, try using the native
3098 if (current_target.to_stratum >= process_stratum)
3099 t = current_target.beneath;
3101 t = find_default_run_target ("get OS data");
3106 return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type);
3109 /* Determine the current address space of thread PTID. */
3111 struct address_space *
3112 target_thread_address_space (ptid_t ptid)
3114 struct address_space *aspace;
3115 struct inferior *inf;
3116 struct target_ops *t;
3118 for (t = current_target.beneath; t != NULL; t = t->beneath)
3120 if (t->to_thread_address_space != NULL)
3122 aspace = t->to_thread_address_space (t, ptid);
3123 gdb_assert (aspace);
3126 fprintf_unfiltered (gdb_stdlog,
3127 "target_thread_address_space (%s) = %d\n",
3128 target_pid_to_str (ptid),
3129 address_space_num (aspace));
3134 /* Fall-back to the "main" address space of the inferior. */
3135 inf = find_inferior_pid (ptid_get_pid (ptid));
3137 if (inf == NULL || inf->aspace == NULL)
3138 internal_error (__FILE__, __LINE__,
3139 _("Can't determine the current "
3140 "address space of thread %s\n"),
3141 target_pid_to_str (ptid));
3147 /* Target file operations. */
3149 static struct target_ops *
3150 default_fileio_target (void)
3152 /* If we're already connected to something that can perform
3153 file I/O, use it. Otherwise, try using the native target. */
3154 if (current_target.to_stratum >= process_stratum)
3155 return current_target.beneath;
3157 return find_default_run_target ("file I/O");
3160 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3161 target file descriptor, or -1 if an error occurs (and set
3164 target_fileio_open (const char *filename, int flags, int mode,
3167 struct target_ops *t;
3169 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3171 if (t->to_fileio_open != NULL)
3173 int fd = t->to_fileio_open (t, filename, flags, mode, target_errno);
3176 fprintf_unfiltered (gdb_stdlog,
3177 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3178 filename, flags, mode,
3179 fd, fd != -1 ? 0 : *target_errno);
3184 *target_errno = FILEIO_ENOSYS;
3188 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3189 Return the number of bytes written, or -1 if an error occurs
3190 (and set *TARGET_ERRNO). */
3192 target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len,
3193 ULONGEST offset, int *target_errno)
3195 struct target_ops *t;
3197 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3199 if (t->to_fileio_pwrite != NULL)
3201 int ret = t->to_fileio_pwrite (t, fd, write_buf, len, offset,
3205 fprintf_unfiltered (gdb_stdlog,
3206 "target_fileio_pwrite (%d,...,%d,%s) "
3208 fd, len, pulongest (offset),
3209 ret, ret != -1 ? 0 : *target_errno);
3214 *target_errno = FILEIO_ENOSYS;
3218 /* Read up to LEN bytes FD on the target into READ_BUF.
3219 Return the number of bytes read, or -1 if an error occurs
3220 (and set *TARGET_ERRNO). */
3222 target_fileio_pread (int fd, gdb_byte *read_buf, int len,
3223 ULONGEST offset, int *target_errno)
3225 struct target_ops *t;
3227 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3229 if (t->to_fileio_pread != NULL)
3231 int ret = t->to_fileio_pread (t, fd, read_buf, len, offset,
3235 fprintf_unfiltered (gdb_stdlog,
3236 "target_fileio_pread (%d,...,%d,%s) "
3238 fd, len, pulongest (offset),
3239 ret, ret != -1 ? 0 : *target_errno);
3244 *target_errno = FILEIO_ENOSYS;
3248 /* Close FD on the target. Return 0, or -1 if an error occurs
3249 (and set *TARGET_ERRNO). */
3251 target_fileio_close (int fd, int *target_errno)
3253 struct target_ops *t;
3255 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3257 if (t->to_fileio_close != NULL)
3259 int ret = t->to_fileio_close (t, fd, target_errno);
3262 fprintf_unfiltered (gdb_stdlog,
3263 "target_fileio_close (%d) = %d (%d)\n",
3264 fd, ret, ret != -1 ? 0 : *target_errno);
3269 *target_errno = FILEIO_ENOSYS;
3273 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3274 occurs (and set *TARGET_ERRNO). */
3276 target_fileio_unlink (const char *filename, int *target_errno)
3278 struct target_ops *t;
3280 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3282 if (t->to_fileio_unlink != NULL)
3284 int ret = t->to_fileio_unlink (t, filename, target_errno);
3287 fprintf_unfiltered (gdb_stdlog,
3288 "target_fileio_unlink (%s) = %d (%d)\n",
3289 filename, ret, ret != -1 ? 0 : *target_errno);
3294 *target_errno = FILEIO_ENOSYS;
3298 /* Read value of symbolic link FILENAME on the target. Return a
3299 null-terminated string allocated via xmalloc, or NULL if an error
3300 occurs (and set *TARGET_ERRNO). */
3302 target_fileio_readlink (const char *filename, int *target_errno)
3304 struct target_ops *t;
3306 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3308 if (t->to_fileio_readlink != NULL)
3310 char *ret = t->to_fileio_readlink (t, filename, target_errno);
3313 fprintf_unfiltered (gdb_stdlog,
3314 "target_fileio_readlink (%s) = %s (%d)\n",
3315 filename, ret? ret : "(nil)",
3316 ret? 0 : *target_errno);
3321 *target_errno = FILEIO_ENOSYS;
3326 target_fileio_close_cleanup (void *opaque)
3328 int fd = *(int *) opaque;
3331 target_fileio_close (fd, &target_errno);
3334 /* Read target file FILENAME. Store the result in *BUF_P and
3335 return the size of the transferred data. PADDING additional bytes are
3336 available in *BUF_P. This is a helper function for
3337 target_fileio_read_alloc; see the declaration of that function for more
3341 target_fileio_read_alloc_1 (const char *filename,
3342 gdb_byte **buf_p, int padding)
3344 struct cleanup *close_cleanup;
3345 size_t buf_alloc, buf_pos;
3351 fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno);
3355 close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd);
3357 /* Start by reading up to 4K at a time. The target will throttle
3358 this number down if necessary. */
3360 buf = xmalloc (buf_alloc);
3364 n = target_fileio_pread (fd, &buf[buf_pos],
3365 buf_alloc - buf_pos - padding, buf_pos,
3369 /* An error occurred. */
3370 do_cleanups (close_cleanup);
3376 /* Read all there was. */
3377 do_cleanups (close_cleanup);
3387 /* If the buffer is filling up, expand it. */
3388 if (buf_alloc < buf_pos * 2)
3391 buf = xrealloc (buf, buf_alloc);
3398 /* Read target file FILENAME. Store the result in *BUF_P and return
3399 the size of the transferred data. See the declaration in "target.h"
3400 function for more information about the return value. */
3403 target_fileio_read_alloc (const char *filename, gdb_byte **buf_p)
3405 return target_fileio_read_alloc_1 (filename, buf_p, 0);
3408 /* Read target file FILENAME. The result is NUL-terminated and
3409 returned as a string, allocated using xmalloc. If an error occurs
3410 or the transfer is unsupported, NULL is returned. Empty objects
3411 are returned as allocated but empty strings. A warning is issued
3412 if the result contains any embedded NUL bytes. */
3415 target_fileio_read_stralloc (const char *filename)
3419 LONGEST i, transferred;
3421 transferred = target_fileio_read_alloc_1 (filename, &buffer, 1);
3422 bufstr = (char *) buffer;
3424 if (transferred < 0)
3427 if (transferred == 0)
3428 return xstrdup ("");
3430 bufstr[transferred] = 0;
3432 /* Check for embedded NUL bytes; but allow trailing NULs. */
3433 for (i = strlen (bufstr); i < transferred; i++)
3436 warning (_("target file %s "
3437 "contained unexpected null characters"),
3447 default_region_ok_for_hw_watchpoint (struct target_ops *self,
3448 CORE_ADDR addr, int len)
3450 return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT);
3454 default_watchpoint_addr_within_range (struct target_ops *target,
3456 CORE_ADDR start, int length)
3458 return addr >= start && addr < start + length;
3461 static struct gdbarch *
3462 default_thread_architecture (struct target_ops *ops, ptid_t ptid)
3464 return target_gdbarch ();
3474 * Find the next target down the stack from the specified target.
3478 find_target_beneath (struct target_ops *t)
3486 find_target_at (enum strata stratum)
3488 struct target_ops *t;
3490 for (t = current_target.beneath; t != NULL; t = t->beneath)
3491 if (t->to_stratum == stratum)
3498 /* The inferior process has died. Long live the inferior! */
3501 generic_mourn_inferior (void)
3505 ptid = inferior_ptid;
3506 inferior_ptid = null_ptid;
3508 /* Mark breakpoints uninserted in case something tries to delete a
3509 breakpoint while we delete the inferior's threads (which would
3510 fail, since the inferior is long gone). */
3511 mark_breakpoints_out ();
3513 if (!ptid_equal (ptid, null_ptid))
3515 int pid = ptid_get_pid (ptid);
3516 exit_inferior (pid);
3519 /* Note this wipes step-resume breakpoints, so needs to be done
3520 after exit_inferior, which ends up referencing the step-resume
3521 breakpoints through clear_thread_inferior_resources. */
3522 breakpoint_init_inferior (inf_exited);
3524 registers_changed ();
3526 reopen_exec_file ();
3527 reinit_frame_cache ();
3529 if (deprecated_detach_hook)
3530 deprecated_detach_hook ();
3533 /* Convert a normal process ID to a string. Returns the string in a
3537 normal_pid_to_str (ptid_t ptid)
3539 static char buf[32];
3541 xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid));
3546 dummy_pid_to_str (struct target_ops *ops, ptid_t ptid)
3548 return normal_pid_to_str (ptid);
3551 /* Error-catcher for target_find_memory_regions. */
3553 dummy_find_memory_regions (struct target_ops *self,
3554 find_memory_region_ftype ignore1, void *ignore2)
3556 error (_("Command not implemented for this target."));
3560 /* Error-catcher for target_make_corefile_notes. */
3562 dummy_make_corefile_notes (struct target_ops *self,
3563 bfd *ignore1, int *ignore2)
3565 error (_("Command not implemented for this target."));
3569 /* Set up the handful of non-empty slots needed by the dummy target
3573 init_dummy_target (void)
3575 dummy_target.to_shortname = "None";
3576 dummy_target.to_longname = "None";
3577 dummy_target.to_doc = "";
3578 dummy_target.to_create_inferior = find_default_create_inferior;
3579 dummy_target.to_supports_non_stop = find_default_supports_non_stop;
3580 dummy_target.to_supports_disable_randomization
3581 = find_default_supports_disable_randomization;
3582 dummy_target.to_pid_to_str = dummy_pid_to_str;
3583 dummy_target.to_stratum = dummy_stratum;
3584 dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero;
3585 dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero;
3586 dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero;
3587 dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero;
3588 dummy_target.to_has_execution
3589 = (int (*) (struct target_ops *, ptid_t)) return_zero;
3590 dummy_target.to_magic = OPS_MAGIC;
3592 install_dummy_methods (&dummy_target);
3596 debug_to_open (char *args, int from_tty)
3598 debug_target.to_open (args, from_tty);
3600 fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty);
3604 target_close (struct target_ops *targ)
3606 gdb_assert (!target_is_pushed (targ));
3608 if (targ->to_xclose != NULL)
3609 targ->to_xclose (targ);
3610 else if (targ->to_close != NULL)
3611 targ->to_close (targ);
3614 fprintf_unfiltered (gdb_stdlog, "target_close ()\n");
3618 target_attach (char *args, int from_tty)
3620 current_target.to_attach (¤t_target, args, from_tty);
3622 fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n",
3627 target_thread_alive (ptid_t ptid)
3629 struct target_ops *t;
3631 for (t = current_target.beneath; t != NULL; t = t->beneath)
3633 if (t->to_thread_alive != NULL)
3637 retval = t->to_thread_alive (t, ptid);
3639 fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n",
3640 ptid_get_pid (ptid), retval);
3650 target_find_new_threads (void)
3652 struct target_ops *t;
3654 for (t = current_target.beneath; t != NULL; t = t->beneath)
3656 if (t->to_find_new_threads != NULL)
3658 t->to_find_new_threads (t);
3660 fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n");
3668 target_stop (ptid_t ptid)
3672 warning (_("May not interrupt or stop the target, ignoring attempt"));
3676 (*current_target.to_stop) (¤t_target, ptid);
3680 debug_to_post_attach (struct target_ops *self, int pid)
3682 debug_target.to_post_attach (&debug_target, pid);
3684 fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid);
3687 /* Concatenate ELEM to LIST, a comma separate list, and return the
3688 result. The LIST incoming argument is released. */
3691 str_comma_list_concat_elem (char *list, const char *elem)
3694 return xstrdup (elem);
3696 return reconcat (list, list, ", ", elem, (char *) NULL);
3699 /* Helper for target_options_to_string. If OPT is present in
3700 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3701 Returns the new resulting string. OPT is removed from
3705 do_option (int *target_options, char *ret,
3706 int opt, char *opt_str)
3708 if ((*target_options & opt) != 0)
3710 ret = str_comma_list_concat_elem (ret, opt_str);
3711 *target_options &= ~opt;
3718 target_options_to_string (int target_options)
3722 #define DO_TARG_OPTION(OPT) \
3723 ret = do_option (&target_options, ret, OPT, #OPT)
3725 DO_TARG_OPTION (TARGET_WNOHANG);
3727 if (target_options != 0)
3728 ret = str_comma_list_concat_elem (ret, "unknown???");
3736 debug_print_register (const char * func,
3737 struct regcache *regcache, int regno)
3739 struct gdbarch *gdbarch = get_regcache_arch (regcache);
3741 fprintf_unfiltered (gdb_stdlog, "%s ", func);
3742 if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)
3743 && gdbarch_register_name (gdbarch, regno) != NULL
3744 && gdbarch_register_name (gdbarch, regno)[0] != '\0')
3745 fprintf_unfiltered (gdb_stdlog, "(%s)",
3746 gdbarch_register_name (gdbarch, regno));
3748 fprintf_unfiltered (gdb_stdlog, "(%d)", regno);
3749 if (regno >= 0 && regno < gdbarch_num_regs (gdbarch))
3751 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
3752 int i, size = register_size (gdbarch, regno);
3753 gdb_byte buf[MAX_REGISTER_SIZE];
3755 regcache_raw_collect (regcache, regno, buf);
3756 fprintf_unfiltered (gdb_stdlog, " = ");
3757 for (i = 0; i < size; i++)
3759 fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]);
3761 if (size <= sizeof (LONGEST))
3763 ULONGEST val = extract_unsigned_integer (buf, size, byte_order);
3765 fprintf_unfiltered (gdb_stdlog, " %s %s",
3766 core_addr_to_string_nz (val), plongest (val));
3769 fprintf_unfiltered (gdb_stdlog, "\n");
3773 target_fetch_registers (struct regcache *regcache, int regno)
3775 struct target_ops *t;
3777 for (t = current_target.beneath; t != NULL; t = t->beneath)
3779 if (t->to_fetch_registers != NULL)
3781 t->to_fetch_registers (t, regcache, regno);
3783 debug_print_register ("target_fetch_registers", regcache, regno);
3790 target_store_registers (struct regcache *regcache, int regno)
3792 struct target_ops *t;
3794 if (!may_write_registers)
3795 error (_("Writing to registers is not allowed (regno %d)"), regno);
3797 current_target.to_store_registers (¤t_target, regcache, regno);
3800 debug_print_register ("target_store_registers", regcache, regno);
3805 target_core_of_thread (ptid_t ptid)
3807 struct target_ops *t;
3809 for (t = current_target.beneath; t != NULL; t = t->beneath)
3811 if (t->to_core_of_thread != NULL)
3813 int retval = t->to_core_of_thread (t, ptid);
3816 fprintf_unfiltered (gdb_stdlog,
3817 "target_core_of_thread (%d) = %d\n",
3818 ptid_get_pid (ptid), retval);
3827 target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size)
3829 struct target_ops *t;
3831 for (t = current_target.beneath; t != NULL; t = t->beneath)
3833 if (t->to_verify_memory != NULL)
3835 int retval = t->to_verify_memory (t, data, memaddr, size);
3838 fprintf_unfiltered (gdb_stdlog,
3839 "target_verify_memory (%s, %s) = %d\n",
3840 paddress (target_gdbarch (), memaddr),
3850 /* The documentation for this function is in its prototype declaration in
3854 target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw)
3856 struct target_ops *t;
3858 for (t = current_target.beneath; t != NULL; t = t->beneath)
3859 if (t->to_insert_mask_watchpoint != NULL)
3863 ret = t->to_insert_mask_watchpoint (t, addr, mask, rw);
3866 fprintf_unfiltered (gdb_stdlog, "\
3867 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3868 core_addr_to_string (addr),
3869 core_addr_to_string (mask), rw, ret);
3877 /* The documentation for this function is in its prototype declaration in
3881 target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw)
3883 struct target_ops *t;
3885 for (t = current_target.beneath; t != NULL; t = t->beneath)
3886 if (t->to_remove_mask_watchpoint != NULL)
3890 ret = t->to_remove_mask_watchpoint (t, addr, mask, rw);
3893 fprintf_unfiltered (gdb_stdlog, "\
3894 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3895 core_addr_to_string (addr),
3896 core_addr_to_string (mask), rw, ret);
3904 /* The documentation for this function is in its prototype declaration
3908 target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask)
3910 struct target_ops *t;
3912 for (t = current_target.beneath; t != NULL; t = t->beneath)
3913 if (t->to_masked_watch_num_registers != NULL)
3914 return t->to_masked_watch_num_registers (t, addr, mask);
3919 /* The documentation for this function is in its prototype declaration
3923 target_ranged_break_num_registers (void)
3925 struct target_ops *t;
3927 for (t = current_target.beneath; t != NULL; t = t->beneath)
3928 if (t->to_ranged_break_num_registers != NULL)
3929 return t->to_ranged_break_num_registers (t);
3936 struct btrace_target_info *
3937 target_enable_btrace (ptid_t ptid)
3939 struct target_ops *t;
3941 for (t = current_target.beneath; t != NULL; t = t->beneath)
3942 if (t->to_enable_btrace != NULL)
3943 return t->to_enable_btrace (t, ptid);
3952 target_disable_btrace (struct btrace_target_info *btinfo)
3954 struct target_ops *t;
3956 for (t = current_target.beneath; t != NULL; t = t->beneath)
3957 if (t->to_disable_btrace != NULL)
3959 t->to_disable_btrace (t, btinfo);
3969 target_teardown_btrace (struct btrace_target_info *btinfo)
3971 struct target_ops *t;
3973 for (t = current_target.beneath; t != NULL; t = t->beneath)
3974 if (t->to_teardown_btrace != NULL)
3976 t->to_teardown_btrace (t, btinfo);
3986 target_read_btrace (VEC (btrace_block_s) **btrace,
3987 struct btrace_target_info *btinfo,
3988 enum btrace_read_type type)
3990 struct target_ops *t;
3992 for (t = current_target.beneath; t != NULL; t = t->beneath)
3993 if (t->to_read_btrace != NULL)
3994 return t->to_read_btrace (t, btrace, btinfo, type);
3997 return BTRACE_ERR_NOT_SUPPORTED;
4003 target_stop_recording (void)
4005 struct target_ops *t;
4007 for (t = current_target.beneath; t != NULL; t = t->beneath)
4008 if (t->to_stop_recording != NULL)
4010 t->to_stop_recording (t);
4014 /* This is optional. */
4020 target_info_record (void)
4022 struct target_ops *t;
4024 for (t = current_target.beneath; t != NULL; t = t->beneath)
4025 if (t->to_info_record != NULL)
4027 t->to_info_record (t);
4037 target_save_record (const char *filename)
4039 struct target_ops *t;
4041 for (t = current_target.beneath; t != NULL; t = t->beneath)
4042 if (t->to_save_record != NULL)
4044 t->to_save_record (t, filename);
4054 target_supports_delete_record (void)
4056 struct target_ops *t;
4058 for (t = current_target.beneath; t != NULL; t = t->beneath)
4059 if (t->to_delete_record != NULL)
4068 target_delete_record (void)
4070 struct target_ops *t;
4072 for (t = current_target.beneath; t != NULL; t = t->beneath)
4073 if (t->to_delete_record != NULL)
4075 t->to_delete_record (t);
4085 target_record_is_replaying (void)
4087 struct target_ops *t;
4089 for (t = current_target.beneath; t != NULL; t = t->beneath)
4090 if (t->to_record_is_replaying != NULL)
4091 return t->to_record_is_replaying (t);
4099 target_goto_record_begin (void)
4101 struct target_ops *t;
4103 for (t = current_target.beneath; t != NULL; t = t->beneath)
4104 if (t->to_goto_record_begin != NULL)
4106 t->to_goto_record_begin (t);
4116 target_goto_record_end (void)
4118 struct target_ops *t;
4120 for (t = current_target.beneath; t != NULL; t = t->beneath)
4121 if (t->to_goto_record_end != NULL)
4123 t->to_goto_record_end (t);
4133 target_goto_record (ULONGEST insn)
4135 struct target_ops *t;
4137 for (t = current_target.beneath; t != NULL; t = t->beneath)
4138 if (t->to_goto_record != NULL)
4140 t->to_goto_record (t, insn);
4150 target_insn_history (int size, int flags)
4152 struct target_ops *t;
4154 for (t = current_target.beneath; t != NULL; t = t->beneath)
4155 if (t->to_insn_history != NULL)
4157 t->to_insn_history (t, size, flags);
4167 target_insn_history_from (ULONGEST from, int size, int flags)
4169 struct target_ops *t;
4171 for (t = current_target.beneath; t != NULL; t = t->beneath)
4172 if (t->to_insn_history_from != NULL)
4174 t->to_insn_history_from (t, from, size, flags);
4184 target_insn_history_range (ULONGEST begin, ULONGEST end, int flags)
4186 struct target_ops *t;
4188 for (t = current_target.beneath; t != NULL; t = t->beneath)
4189 if (t->to_insn_history_range != NULL)
4191 t->to_insn_history_range (t, begin, end, flags);
4201 target_call_history (int size, int flags)
4203 struct target_ops *t;
4205 for (t = current_target.beneath; t != NULL; t = t->beneath)
4206 if (t->to_call_history != NULL)
4208 t->to_call_history (t, size, flags);
4218 target_call_history_from (ULONGEST begin, int size, int flags)
4220 struct target_ops *t;
4222 for (t = current_target.beneath; t != NULL; t = t->beneath)
4223 if (t->to_call_history_from != NULL)
4225 t->to_call_history_from (t, begin, size, flags);
4235 target_call_history_range (ULONGEST begin, ULONGEST end, int flags)
4237 struct target_ops *t;
4239 for (t = current_target.beneath; t != NULL; t = t->beneath)
4240 if (t->to_call_history_range != NULL)
4242 t->to_call_history_range (t, begin, end, flags);
4250 debug_to_prepare_to_store (struct target_ops *self, struct regcache *regcache)
4252 debug_target.to_prepare_to_store (&debug_target, regcache);
4254 fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n");
4259 const struct frame_unwind *
4260 target_get_unwinder (void)
4262 struct target_ops *t;
4264 for (t = current_target.beneath; t != NULL; t = t->beneath)
4265 if (t->to_get_unwinder != NULL)
4266 return t->to_get_unwinder;
4273 const struct frame_unwind *
4274 target_get_tailcall_unwinder (void)
4276 struct target_ops *t;
4278 for (t = current_target.beneath; t != NULL; t = t->beneath)
4279 if (t->to_get_tailcall_unwinder != NULL)
4280 return t->to_get_tailcall_unwinder;
4288 forward_target_decr_pc_after_break (struct target_ops *ops,
4289 struct gdbarch *gdbarch)
4291 for (; ops != NULL; ops = ops->beneath)
4292 if (ops->to_decr_pc_after_break != NULL)
4293 return ops->to_decr_pc_after_break (ops, gdbarch);
4295 return gdbarch_decr_pc_after_break (gdbarch);
4301 target_decr_pc_after_break (struct gdbarch *gdbarch)
4303 return forward_target_decr_pc_after_break (current_target.beneath, gdbarch);
4307 deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len,
4308 int write, struct mem_attrib *attrib,
4309 struct target_ops *target)
4313 retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write,
4316 fprintf_unfiltered (gdb_stdlog,
4317 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4318 paddress (target_gdbarch (), memaddr), len,
4319 write ? "write" : "read", retval);
4325 fputs_unfiltered (", bytes =", gdb_stdlog);
4326 for (i = 0; i < retval; i++)
4328 if ((((intptr_t) &(myaddr[i])) & 0xf) == 0)
4330 if (targetdebug < 2 && i > 0)
4332 fprintf_unfiltered (gdb_stdlog, " ...");
4335 fprintf_unfiltered (gdb_stdlog, "\n");
4338 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
4342 fputc_unfiltered ('\n', gdb_stdlog);
4348 debug_to_files_info (struct target_ops *target)
4350 debug_target.to_files_info (target);
4352 fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n");
4356 debug_to_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch,
4357 struct bp_target_info *bp_tgt)
4361 retval = debug_target.to_insert_breakpoint (&debug_target, gdbarch, bp_tgt);
4363 fprintf_unfiltered (gdb_stdlog,
4364 "target_insert_breakpoint (%s, xxx) = %ld\n",
4365 core_addr_to_string (bp_tgt->placed_address),
4366 (unsigned long) retval);
4371 debug_to_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch,
4372 struct bp_target_info *bp_tgt)
4376 retval = debug_target.to_remove_breakpoint (&debug_target, gdbarch, bp_tgt);
4378 fprintf_unfiltered (gdb_stdlog,
4379 "target_remove_breakpoint (%s, xxx) = %ld\n",
4380 core_addr_to_string (bp_tgt->placed_address),
4381 (unsigned long) retval);
4386 debug_to_can_use_hw_breakpoint (struct target_ops *self,
4387 int type, int cnt, int from_tty)
4391 retval = debug_target.to_can_use_hw_breakpoint (&debug_target,
4392 type, cnt, from_tty);
4394 fprintf_unfiltered (gdb_stdlog,
4395 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4396 (unsigned long) type,
4397 (unsigned long) cnt,
4398 (unsigned long) from_tty,
4399 (unsigned long) retval);
4404 debug_to_region_ok_for_hw_watchpoint (struct target_ops *self,
4405 CORE_ADDR addr, int len)
4409 retval = debug_target.to_region_ok_for_hw_watchpoint (&debug_target,
4412 fprintf_unfiltered (gdb_stdlog,
4413 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4414 core_addr_to_string (addr), (unsigned long) len,
4415 core_addr_to_string (retval));
4420 debug_to_can_accel_watchpoint_condition (struct target_ops *self,
4421 CORE_ADDR addr, int len, int rw,
4422 struct expression *cond)
4426 retval = debug_target.to_can_accel_watchpoint_condition (&debug_target,
4430 fprintf_unfiltered (gdb_stdlog,
4431 "target_can_accel_watchpoint_condition "
4432 "(%s, %d, %d, %s) = %ld\n",
4433 core_addr_to_string (addr), len, rw,
4434 host_address_to_string (cond), (unsigned long) retval);
4439 debug_to_stopped_by_watchpoint (struct target_ops *ops)
4443 retval = debug_target.to_stopped_by_watchpoint (&debug_target);
4445 fprintf_unfiltered (gdb_stdlog,
4446 "target_stopped_by_watchpoint () = %ld\n",
4447 (unsigned long) retval);
4452 debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr)
4456 retval = debug_target.to_stopped_data_address (target, addr);
4458 fprintf_unfiltered (gdb_stdlog,
4459 "target_stopped_data_address ([%s]) = %ld\n",
4460 core_addr_to_string (*addr),
4461 (unsigned long)retval);
4466 debug_to_watchpoint_addr_within_range (struct target_ops *target,
4468 CORE_ADDR start, int length)
4472 retval = debug_target.to_watchpoint_addr_within_range (target, addr,
4475 fprintf_filtered (gdb_stdlog,
4476 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4477 core_addr_to_string (addr), core_addr_to_string (start),
4483 debug_to_insert_hw_breakpoint (struct target_ops *self,
4484 struct gdbarch *gdbarch,
4485 struct bp_target_info *bp_tgt)
4489 retval = debug_target.to_insert_hw_breakpoint (&debug_target,
4492 fprintf_unfiltered (gdb_stdlog,
4493 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4494 core_addr_to_string (bp_tgt->placed_address),
4495 (unsigned long) retval);
4500 debug_to_remove_hw_breakpoint (struct target_ops *self,
4501 struct gdbarch *gdbarch,
4502 struct bp_target_info *bp_tgt)
4506 retval = debug_target.to_remove_hw_breakpoint (&debug_target,
4509 fprintf_unfiltered (gdb_stdlog,
4510 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4511 core_addr_to_string (bp_tgt->placed_address),
4512 (unsigned long) retval);
4517 debug_to_insert_watchpoint (struct target_ops *self,
4518 CORE_ADDR addr, int len, int type,
4519 struct expression *cond)
4523 retval = debug_target.to_insert_watchpoint (&debug_target,
4524 addr, len, type, cond);
4526 fprintf_unfiltered (gdb_stdlog,
4527 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4528 core_addr_to_string (addr), len, type,
4529 host_address_to_string (cond), (unsigned long) retval);
4534 debug_to_remove_watchpoint (struct target_ops *self,
4535 CORE_ADDR addr, int len, int type,
4536 struct expression *cond)
4540 retval = debug_target.to_remove_watchpoint (&debug_target,
4541 addr, len, type, cond);
4543 fprintf_unfiltered (gdb_stdlog,
4544 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4545 core_addr_to_string (addr), len, type,
4546 host_address_to_string (cond), (unsigned long) retval);
4551 debug_to_terminal_init (struct target_ops *self)
4553 debug_target.to_terminal_init (&debug_target);
4555 fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n");
4559 debug_to_terminal_inferior (struct target_ops *self)
4561 debug_target.to_terminal_inferior (&debug_target);
4563 fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n");
4567 debug_to_terminal_ours_for_output (struct target_ops *self)
4569 debug_target.to_terminal_ours_for_output (&debug_target);
4571 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n");
4575 debug_to_terminal_ours (struct target_ops *self)
4577 debug_target.to_terminal_ours (&debug_target);
4579 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n");
4583 debug_to_terminal_save_ours (struct target_ops *self)
4585 debug_target.to_terminal_save_ours (&debug_target);
4587 fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n");
4591 debug_to_terminal_info (struct target_ops *self,
4592 const char *arg, int from_tty)
4594 debug_target.to_terminal_info (&debug_target, arg, from_tty);
4596 fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg,
4601 debug_to_load (struct target_ops *self, char *args, int from_tty)
4603 debug_target.to_load (&debug_target, args, from_tty);
4605 fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty);
4609 debug_to_post_startup_inferior (struct target_ops *self, ptid_t ptid)
4611 debug_target.to_post_startup_inferior (&debug_target, ptid);
4613 fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n",
4614 ptid_get_pid (ptid));
4618 debug_to_insert_fork_catchpoint (struct target_ops *self, int pid)
4622 retval = debug_target.to_insert_fork_catchpoint (&debug_target, pid);
4624 fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n",
4631 debug_to_remove_fork_catchpoint (struct target_ops *self, int pid)
4635 retval = debug_target.to_remove_fork_catchpoint (&debug_target, pid);
4637 fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n",
4644 debug_to_insert_vfork_catchpoint (struct target_ops *self, int pid)
4648 retval = debug_target.to_insert_vfork_catchpoint (&debug_target, pid);
4650 fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n",
4657 debug_to_remove_vfork_catchpoint (struct target_ops *self, int pid)
4661 retval = debug_target.to_remove_vfork_catchpoint (&debug_target, pid);
4663 fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n",
4670 debug_to_insert_exec_catchpoint (struct target_ops *self, int pid)
4674 retval = debug_target.to_insert_exec_catchpoint (&debug_target, pid);
4676 fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n",
4683 debug_to_remove_exec_catchpoint (struct target_ops *self, int pid)
4687 retval = debug_target.to_remove_exec_catchpoint (&debug_target, pid);
4689 fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n",
4696 debug_to_has_exited (struct target_ops *self,
4697 int pid, int wait_status, int *exit_status)
4701 has_exited = debug_target.to_has_exited (&debug_target,
4702 pid, wait_status, exit_status);
4704 fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n",
4705 pid, wait_status, *exit_status, has_exited);
4711 debug_to_can_run (struct target_ops *self)
4715 retval = debug_target.to_can_run (&debug_target);
4717 fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval);
4722 static struct gdbarch *
4723 debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid)
4725 struct gdbarch *retval;
4727 retval = debug_target.to_thread_architecture (ops, ptid);
4729 fprintf_unfiltered (gdb_stdlog,
4730 "target_thread_architecture (%s) = %s [%s]\n",
4731 target_pid_to_str (ptid),
4732 host_address_to_string (retval),
4733 gdbarch_bfd_arch_info (retval)->printable_name);
4738 debug_to_stop (struct target_ops *self, ptid_t ptid)
4740 debug_target.to_stop (&debug_target, ptid);
4742 fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n",
4743 target_pid_to_str (ptid));
4747 debug_to_rcmd (struct target_ops *self, char *command,
4748 struct ui_file *outbuf)
4750 debug_target.to_rcmd (&debug_target, command, outbuf);
4751 fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command);
4755 debug_to_pid_to_exec_file (struct target_ops *self, int pid)
4759 exec_file = debug_target.to_pid_to_exec_file (&debug_target, pid);
4761 fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n",
4768 setup_target_debug (void)
4770 memcpy (&debug_target, ¤t_target, sizeof debug_target);
4772 current_target.to_open = debug_to_open;
4773 current_target.to_post_attach = debug_to_post_attach;
4774 current_target.to_prepare_to_store = debug_to_prepare_to_store;
4775 current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory;
4776 current_target.to_files_info = debug_to_files_info;
4777 current_target.to_insert_breakpoint = debug_to_insert_breakpoint;
4778 current_target.to_remove_breakpoint = debug_to_remove_breakpoint;
4779 current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint;
4780 current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint;
4781 current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint;
4782 current_target.to_insert_watchpoint = debug_to_insert_watchpoint;
4783 current_target.to_remove_watchpoint = debug_to_remove_watchpoint;
4784 current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint;
4785 current_target.to_stopped_data_address = debug_to_stopped_data_address;
4786 current_target.to_watchpoint_addr_within_range
4787 = debug_to_watchpoint_addr_within_range;
4788 current_target.to_region_ok_for_hw_watchpoint
4789 = debug_to_region_ok_for_hw_watchpoint;
4790 current_target.to_can_accel_watchpoint_condition
4791 = debug_to_can_accel_watchpoint_condition;
4792 current_target.to_terminal_init = debug_to_terminal_init;
4793 current_target.to_terminal_inferior = debug_to_terminal_inferior;
4794 current_target.to_terminal_ours_for_output
4795 = debug_to_terminal_ours_for_output;
4796 current_target.to_terminal_ours = debug_to_terminal_ours;
4797 current_target.to_terminal_save_ours = debug_to_terminal_save_ours;
4798 current_target.to_terminal_info = debug_to_terminal_info;
4799 current_target.to_load = debug_to_load;
4800 current_target.to_post_startup_inferior = debug_to_post_startup_inferior;
4801 current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint;
4802 current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint;
4803 current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint;
4804 current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint;
4805 current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint;
4806 current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint;
4807 current_target.to_has_exited = debug_to_has_exited;
4808 current_target.to_can_run = debug_to_can_run;
4809 current_target.to_stop = debug_to_stop;
4810 current_target.to_rcmd = debug_to_rcmd;
4811 current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file;
4812 current_target.to_thread_architecture = debug_to_thread_architecture;
4816 static char targ_desc[] =
4817 "Names of targets and files being debugged.\nShows the entire \
4818 stack of targets currently in use (including the exec-file,\n\
4819 core-file, and process, if any), as well as the symbol file name.";
4822 default_rcmd (struct target_ops *self, char *command, struct ui_file *output)
4824 error (_("\"monitor\" command not supported by this target."));
4828 do_monitor_command (char *cmd,
4831 target_rcmd (cmd, gdb_stdtarg);
4834 /* Print the name of each layers of our target stack. */
4837 maintenance_print_target_stack (char *cmd, int from_tty)
4839 struct target_ops *t;
4841 printf_filtered (_("The current target stack is:\n"));
4843 for (t = target_stack; t != NULL; t = t->beneath)
4845 printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname);
4849 /* Controls if async mode is permitted. */
4850 int target_async_permitted = 0;
4852 /* The set command writes to this variable. If the inferior is
4853 executing, target_async_permitted is *not* updated. */
4854 static int target_async_permitted_1 = 0;
4857 set_target_async_command (char *args, int from_tty,
4858 struct cmd_list_element *c)
4860 if (have_live_inferiors ())
4862 target_async_permitted_1 = target_async_permitted;
4863 error (_("Cannot change this setting while the inferior is running."));
4866 target_async_permitted = target_async_permitted_1;
4870 show_target_async_command (struct ui_file *file, int from_tty,
4871 struct cmd_list_element *c,
4874 fprintf_filtered (file,
4875 _("Controlling the inferior in "
4876 "asynchronous mode is %s.\n"), value);
4879 /* Temporary copies of permission settings. */
4881 static int may_write_registers_1 = 1;
4882 static int may_write_memory_1 = 1;
4883 static int may_insert_breakpoints_1 = 1;
4884 static int may_insert_tracepoints_1 = 1;
4885 static int may_insert_fast_tracepoints_1 = 1;
4886 static int may_stop_1 = 1;
4888 /* Make the user-set values match the real values again. */
4891 update_target_permissions (void)
4893 may_write_registers_1 = may_write_registers;
4894 may_write_memory_1 = may_write_memory;
4895 may_insert_breakpoints_1 = may_insert_breakpoints;
4896 may_insert_tracepoints_1 = may_insert_tracepoints;
4897 may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints;
4898 may_stop_1 = may_stop;
4901 /* The one function handles (most of) the permission flags in the same
4905 set_target_permissions (char *args, int from_tty,
4906 struct cmd_list_element *c)
4908 if (target_has_execution)
4910 update_target_permissions ();
4911 error (_("Cannot change this setting while the inferior is running."));
4914 /* Make the real values match the user-changed values. */
4915 may_write_registers = may_write_registers_1;
4916 may_insert_breakpoints = may_insert_breakpoints_1;
4917 may_insert_tracepoints = may_insert_tracepoints_1;
4918 may_insert_fast_tracepoints = may_insert_fast_tracepoints_1;
4919 may_stop = may_stop_1;
4920 update_observer_mode ();
4923 /* Set memory write permission independently of observer mode. */
4926 set_write_memory_permission (char *args, int from_tty,
4927 struct cmd_list_element *c)
4929 /* Make the real values match the user-changed values. */
4930 may_write_memory = may_write_memory_1;
4931 update_observer_mode ();
4936 initialize_targets (void)
4938 init_dummy_target ();
4939 push_target (&dummy_target);
4941 add_info ("target", target_info, targ_desc);
4942 add_info ("files", target_info, targ_desc);
4944 add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\
4945 Set target debugging."), _("\
4946 Show target debugging."), _("\
4947 When non-zero, target debugging is enabled. Higher numbers are more\n\
4948 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4952 &setdebuglist, &showdebuglist);
4954 add_setshow_boolean_cmd ("trust-readonly-sections", class_support,
4955 &trust_readonly, _("\
4956 Set mode for reading from readonly sections."), _("\
4957 Show mode for reading from readonly sections."), _("\
4958 When this mode is on, memory reads from readonly sections (such as .text)\n\
4959 will be read from the object file instead of from the target. This will\n\
4960 result in significant performance improvement for remote targets."),
4962 show_trust_readonly,
4963 &setlist, &showlist);
4965 add_com ("monitor", class_obscure, do_monitor_command,
4966 _("Send a command to the remote monitor (remote targets only)."));
4968 add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack,
4969 _("Print the name of each layer of the internal target stack."),
4970 &maintenanceprintlist);
4972 add_setshow_boolean_cmd ("target-async", no_class,
4973 &target_async_permitted_1, _("\
4974 Set whether gdb controls the inferior in asynchronous mode."), _("\
4975 Show whether gdb controls the inferior in asynchronous mode."), _("\
4976 Tells gdb whether to control the inferior in asynchronous mode."),
4977 set_target_async_command,
4978 show_target_async_command,
4982 add_setshow_boolean_cmd ("may-write-registers", class_support,
4983 &may_write_registers_1, _("\
4984 Set permission to write into registers."), _("\
4985 Show permission to write into registers."), _("\
4986 When this permission is on, GDB may write into the target's registers.\n\
4987 Otherwise, any sort of write attempt will result in an error."),
4988 set_target_permissions, NULL,
4989 &setlist, &showlist);
4991 add_setshow_boolean_cmd ("may-write-memory", class_support,
4992 &may_write_memory_1, _("\
4993 Set permission to write into target memory."), _("\
4994 Show permission to write into target memory."), _("\
4995 When this permission is on, GDB may write into the target's memory.\n\
4996 Otherwise, any sort of write attempt will result in an error."),
4997 set_write_memory_permission, NULL,
4998 &setlist, &showlist);
5000 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support,
5001 &may_insert_breakpoints_1, _("\
5002 Set permission to insert breakpoints in the target."), _("\
5003 Show permission to insert breakpoints in the target."), _("\
5004 When this permission is on, GDB may insert breakpoints in the program.\n\
5005 Otherwise, any sort of insertion attempt will result in an error."),
5006 set_target_permissions, NULL,
5007 &setlist, &showlist);
5009 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support,
5010 &may_insert_tracepoints_1, _("\
5011 Set permission to insert tracepoints in the target."), _("\
5012 Show permission to insert tracepoints in the target."), _("\
5013 When this permission is on, GDB may insert tracepoints in the program.\n\
5014 Otherwise, any sort of insertion attempt will result in an error."),
5015 set_target_permissions, NULL,
5016 &setlist, &showlist);
5018 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support,
5019 &may_insert_fast_tracepoints_1, _("\
5020 Set permission to insert fast tracepoints in the target."), _("\
5021 Show permission to insert fast tracepoints in the target."), _("\
5022 When this permission is on, GDB may insert fast tracepoints.\n\
5023 Otherwise, any sort of insertion attempt will result in an error."),
5024 set_target_permissions, NULL,
5025 &setlist, &showlist);
5027 add_setshow_boolean_cmd ("may-interrupt", class_support,
5029 Set permission to interrupt or signal the target."), _("\
5030 Show permission to interrupt or signal the target."), _("\
5031 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5032 Otherwise, any attempt to interrupt or stop will be ignored."),
5033 set_target_permissions, NULL,
5034 &setlist, &showlist);