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"
49 static void target_info (char *, int);
51 static void default_terminal_info (struct target_ops *, const char *, int);
53 static int default_watchpoint_addr_within_range (struct target_ops *,
54 CORE_ADDR, CORE_ADDR, int);
56 static int default_region_ok_for_hw_watchpoint (struct target_ops *,
59 static void default_rcmd (struct target_ops *, char *, struct ui_file *);
61 static ptid_t default_get_ada_task_ptid (struct target_ops *self,
64 static int default_follow_fork (struct target_ops *self, int follow_child,
67 static void default_mourn_inferior (struct target_ops *self);
69 static int default_search_memory (struct target_ops *ops,
71 ULONGEST search_space_len,
72 const gdb_byte *pattern,
74 CORE_ADDR *found_addrp);
76 static void tcomplain (void) ATTRIBUTE_NORETURN;
78 static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *);
80 static int return_zero (void);
82 void target_ignore (void);
84 static void target_command (char *, int);
86 static struct target_ops *find_default_run_target (char *);
88 static target_xfer_partial_ftype default_xfer_partial;
90 static struct gdbarch *default_thread_architecture (struct target_ops *ops,
93 static int dummy_find_memory_regions (struct target_ops *self,
94 find_memory_region_ftype ignore1,
97 static char *dummy_make_corefile_notes (struct target_ops *self,
98 bfd *ignore1, int *ignore2);
100 static char *default_pid_to_str (struct target_ops *ops, ptid_t ptid);
102 static int find_default_can_async_p (struct target_ops *ignore);
104 static int find_default_is_async_p (struct target_ops *ignore);
106 static enum exec_direction_kind default_execution_direction
107 (struct target_ops *self);
109 #include "target-delegates.c"
111 static void init_dummy_target (void);
113 static struct target_ops debug_target;
115 static void debug_to_open (char *, int);
117 static void debug_to_prepare_to_store (struct target_ops *self,
120 static void debug_to_files_info (struct target_ops *);
122 static int debug_to_insert_breakpoint (struct target_ops *, struct gdbarch *,
123 struct bp_target_info *);
125 static int debug_to_remove_breakpoint (struct target_ops *, struct gdbarch *,
126 struct bp_target_info *);
128 static int debug_to_can_use_hw_breakpoint (struct target_ops *self,
131 static int debug_to_insert_hw_breakpoint (struct target_ops *self,
133 struct bp_target_info *);
135 static int debug_to_remove_hw_breakpoint (struct target_ops *self,
137 struct bp_target_info *);
139 static int debug_to_insert_watchpoint (struct target_ops *self,
141 struct expression *);
143 static int debug_to_remove_watchpoint (struct target_ops *self,
145 struct expression *);
147 static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *);
149 static int debug_to_watchpoint_addr_within_range (struct target_ops *,
150 CORE_ADDR, CORE_ADDR, int);
152 static int debug_to_region_ok_for_hw_watchpoint (struct target_ops *self,
155 static int debug_to_can_accel_watchpoint_condition (struct target_ops *self,
157 struct expression *);
159 static void debug_to_terminal_init (struct target_ops *self);
161 static void debug_to_terminal_inferior (struct target_ops *self);
163 static void debug_to_terminal_ours_for_output (struct target_ops *self);
165 static void debug_to_terminal_save_ours (struct target_ops *self);
167 static void debug_to_terminal_ours (struct target_ops *self);
169 static void debug_to_load (struct target_ops *self, char *, int);
171 static int debug_to_can_run (struct target_ops *self);
173 static void debug_to_stop (struct target_ops *self, ptid_t);
175 /* Pointer to array of target architecture structures; the size of the
176 array; the current index into the array; the allocated size of the
178 struct target_ops **target_structs;
179 unsigned target_struct_size;
180 unsigned target_struct_allocsize;
181 #define DEFAULT_ALLOCSIZE 10
183 /* The initial current target, so that there is always a semi-valid
186 static struct target_ops dummy_target;
188 /* Top of target stack. */
190 static struct target_ops *target_stack;
192 /* The target structure we are currently using to talk to a process
193 or file or whatever "inferior" we have. */
195 struct target_ops current_target;
197 /* Command list for target. */
199 static struct cmd_list_element *targetlist = NULL;
201 /* Nonzero if we should trust readonly sections from the
202 executable when reading memory. */
204 static int trust_readonly = 0;
206 /* Nonzero if we should show true memory content including
207 memory breakpoint inserted by gdb. */
209 static int show_memory_breakpoints = 0;
211 /* These globals control whether GDB attempts to perform these
212 operations; they are useful for targets that need to prevent
213 inadvertant disruption, such as in non-stop mode. */
215 int may_write_registers = 1;
217 int may_write_memory = 1;
219 int may_insert_breakpoints = 1;
221 int may_insert_tracepoints = 1;
223 int may_insert_fast_tracepoints = 1;
227 /* Non-zero if we want to see trace of target level stuff. */
229 static unsigned int targetdebug = 0;
231 show_targetdebug (struct ui_file *file, int from_tty,
232 struct cmd_list_element *c, const char *value)
234 fprintf_filtered (file, _("Target debugging is %s.\n"), value);
237 static void setup_target_debug (void);
239 /* The user just typed 'target' without the name of a target. */
242 target_command (char *arg, int from_tty)
244 fputs_filtered ("Argument required (target name). Try `help target'\n",
248 /* Default target_has_* methods for process_stratum targets. */
251 default_child_has_all_memory (struct target_ops *ops)
253 /* If no inferior selected, then we can't read memory here. */
254 if (ptid_equal (inferior_ptid, null_ptid))
261 default_child_has_memory (struct target_ops *ops)
263 /* If no inferior selected, then we can't read memory here. */
264 if (ptid_equal (inferior_ptid, null_ptid))
271 default_child_has_stack (struct target_ops *ops)
273 /* If no inferior selected, there's no stack. */
274 if (ptid_equal (inferior_ptid, null_ptid))
281 default_child_has_registers (struct target_ops *ops)
283 /* Can't read registers from no inferior. */
284 if (ptid_equal (inferior_ptid, null_ptid))
291 default_child_has_execution (struct target_ops *ops, ptid_t the_ptid)
293 /* If there's no thread selected, then we can't make it run through
295 if (ptid_equal (the_ptid, null_ptid))
303 target_has_all_memory_1 (void)
305 struct target_ops *t;
307 for (t = current_target.beneath; t != NULL; t = t->beneath)
308 if (t->to_has_all_memory (t))
315 target_has_memory_1 (void)
317 struct target_ops *t;
319 for (t = current_target.beneath; t != NULL; t = t->beneath)
320 if (t->to_has_memory (t))
327 target_has_stack_1 (void)
329 struct target_ops *t;
331 for (t = current_target.beneath; t != NULL; t = t->beneath)
332 if (t->to_has_stack (t))
339 target_has_registers_1 (void)
341 struct target_ops *t;
343 for (t = current_target.beneath; t != NULL; t = t->beneath)
344 if (t->to_has_registers (t))
351 target_has_execution_1 (ptid_t the_ptid)
353 struct target_ops *t;
355 for (t = current_target.beneath; t != NULL; t = t->beneath)
356 if (t->to_has_execution (t, the_ptid))
363 target_has_execution_current (void)
365 return target_has_execution_1 (inferior_ptid);
368 /* Complete initialization of T. This ensures that various fields in
369 T are set, if needed by the target implementation. */
372 complete_target_initialization (struct target_ops *t)
374 /* Provide default values for all "must have" methods. */
375 if (t->to_xfer_partial == NULL)
376 t->to_xfer_partial = default_xfer_partial;
378 if (t->to_has_all_memory == NULL)
379 t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero;
381 if (t->to_has_memory == NULL)
382 t->to_has_memory = (int (*) (struct target_ops *)) return_zero;
384 if (t->to_has_stack == NULL)
385 t->to_has_stack = (int (*) (struct target_ops *)) return_zero;
387 if (t->to_has_registers == NULL)
388 t->to_has_registers = (int (*) (struct target_ops *)) return_zero;
390 if (t->to_has_execution == NULL)
391 t->to_has_execution = (int (*) (struct target_ops *, ptid_t)) return_zero;
393 install_delegators (t);
396 /* Add possible target architecture T to the list and add a new
397 command 'target T->to_shortname'. Set COMPLETER as the command's
398 completer if not NULL. */
401 add_target_with_completer (struct target_ops *t,
402 completer_ftype *completer)
404 struct cmd_list_element *c;
406 complete_target_initialization (t);
410 target_struct_allocsize = DEFAULT_ALLOCSIZE;
411 target_structs = (struct target_ops **) xmalloc
412 (target_struct_allocsize * sizeof (*target_structs));
414 if (target_struct_size >= target_struct_allocsize)
416 target_struct_allocsize *= 2;
417 target_structs = (struct target_ops **)
418 xrealloc ((char *) target_structs,
419 target_struct_allocsize * sizeof (*target_structs));
421 target_structs[target_struct_size++] = t;
423 if (targetlist == NULL)
424 add_prefix_cmd ("target", class_run, target_command, _("\
425 Connect to a target machine or process.\n\
426 The first argument is the type or protocol of the target machine.\n\
427 Remaining arguments are interpreted by the target protocol. For more\n\
428 information on the arguments for a particular protocol, type\n\
429 `help target ' followed by the protocol name."),
430 &targetlist, "target ", 0, &cmdlist);
431 c = add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc,
433 if (completer != NULL)
434 set_cmd_completer (c, completer);
437 /* Add a possible target architecture to the list. */
440 add_target (struct target_ops *t)
442 add_target_with_completer (t, NULL);
448 add_deprecated_target_alias (struct target_ops *t, char *alias)
450 struct cmd_list_element *c;
453 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
455 c = add_cmd (alias, no_class, t->to_open, t->to_doc, &targetlist);
456 alt = xstrprintf ("target %s", t->to_shortname);
457 deprecate_cmd (c, alt);
471 fprintf_unfiltered (gdb_stdlog, "target_kill ()\n");
473 current_target.to_kill (¤t_target);
477 target_load (char *arg, int from_tty)
479 target_dcache_invalidate ();
480 (*current_target.to_load) (¤t_target, arg, from_tty);
484 target_create_inferior (char *exec_file, char *args,
485 char **env, int from_tty)
487 struct target_ops *t;
489 for (t = current_target.beneath; t != NULL; t = t->beneath)
491 if (t->to_create_inferior != NULL)
493 t->to_create_inferior (t, exec_file, args, env, from_tty);
495 fprintf_unfiltered (gdb_stdlog,
496 "target_create_inferior (%s, %s, xxx, %d)\n",
497 exec_file, args, from_tty);
502 internal_error (__FILE__, __LINE__,
503 _("could not find a target to create inferior"));
507 target_terminal_inferior (void)
509 /* A background resume (``run&'') should leave GDB in control of the
510 terminal. Use target_can_async_p, not target_is_async_p, since at
511 this point the target is not async yet. However, if sync_execution
512 is not set, we know it will become async prior to resume. */
513 if (target_can_async_p () && !sync_execution)
516 /* If GDB is resuming the inferior in the foreground, install
517 inferior's terminal modes. */
518 (*current_target.to_terminal_inferior) (¤t_target);
522 nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write,
523 struct target_ops *t)
525 errno = EIO; /* Can't read/write this location. */
526 return 0; /* No bytes handled. */
532 error (_("You can't do that when your target is `%s'"),
533 current_target.to_shortname);
539 error (_("You can't do that without a process to debug."));
543 default_terminal_info (struct target_ops *self, const char *args, int from_tty)
545 printf_unfiltered (_("No saved terminal information.\n"));
548 /* A default implementation for the to_get_ada_task_ptid target method.
550 This function builds the PTID by using both LWP and TID as part of
551 the PTID lwp and tid elements. The pid used is the pid of the
555 default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid)
557 return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid);
560 static enum exec_direction_kind
561 default_execution_direction (struct target_ops *self)
563 if (!target_can_execute_reverse)
565 else if (!target_can_async_p ())
568 gdb_assert_not_reached ("\
569 to_execution_direction must be implemented for reverse async");
572 /* Go through the target stack from top to bottom, copying over zero
573 entries in current_target, then filling in still empty entries. In
574 effect, we are doing class inheritance through the pushed target
577 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
578 is currently implemented, is that it discards any knowledge of
579 which target an inherited method originally belonged to.
580 Consequently, new new target methods should instead explicitly and
581 locally search the target stack for the target that can handle the
585 update_current_target (void)
587 struct target_ops *t;
589 /* First, reset current's contents. */
590 memset (¤t_target, 0, sizeof (current_target));
592 /* Install the delegators. */
593 install_delegators (¤t_target);
595 #define INHERIT(FIELD, TARGET) \
596 if (!current_target.FIELD) \
597 current_target.FIELD = (TARGET)->FIELD
599 for (t = target_stack; t; t = t->beneath)
601 INHERIT (to_shortname, t);
602 INHERIT (to_longname, t);
604 /* Do not inherit to_open. */
605 /* Do not inherit to_close. */
606 /* Do not inherit to_attach. */
607 /* Do not inherit to_post_attach. */
608 INHERIT (to_attach_no_wait, t);
609 /* Do not inherit to_detach. */
610 /* Do not inherit to_disconnect. */
611 /* Do not inherit to_resume. */
612 /* Do not inherit to_wait. */
613 /* Do not inherit to_fetch_registers. */
614 /* Do not inherit to_store_registers. */
615 /* Do not inherit to_prepare_to_store. */
616 INHERIT (deprecated_xfer_memory, t);
617 /* Do not inherit to_files_info. */
618 /* Do not inherit to_insert_breakpoint. */
619 /* Do not inherit to_remove_breakpoint. */
620 /* Do not inherit to_can_use_hw_breakpoint. */
621 /* Do not inherit to_insert_hw_breakpoint. */
622 /* Do not inherit to_remove_hw_breakpoint. */
623 /* Do not inherit to_ranged_break_num_registers. */
624 /* Do not inherit to_insert_watchpoint. */
625 /* Do not inherit to_remove_watchpoint. */
626 /* Do not inherit to_insert_mask_watchpoint. */
627 /* Do not inherit to_remove_mask_watchpoint. */
628 /* Do not inherit to_stopped_data_address. */
629 INHERIT (to_have_steppable_watchpoint, t);
630 INHERIT (to_have_continuable_watchpoint, t);
631 /* Do not inherit to_stopped_by_watchpoint. */
632 /* Do not inherit to_watchpoint_addr_within_range. */
633 /* Do not inherit to_region_ok_for_hw_watchpoint. */
634 /* Do not inherit to_can_accel_watchpoint_condition. */
635 /* Do not inherit to_masked_watch_num_registers. */
636 /* Do not inherit to_terminal_init. */
637 /* Do not inherit to_terminal_inferior. */
638 /* Do not inherit to_terminal_ours_for_output. */
639 /* Do not inherit to_terminal_ours. */
640 /* Do not inherit to_terminal_save_ours. */
641 /* Do not inherit to_terminal_info. */
642 /* Do not inherit to_kill. */
643 /* Do not inherit to_load. */
644 /* Do no inherit to_create_inferior. */
645 /* Do not inherit to_post_startup_inferior. */
646 /* Do not inherit to_insert_fork_catchpoint. */
647 /* Do not inherit to_remove_fork_catchpoint. */
648 /* Do not inherit to_insert_vfork_catchpoint. */
649 /* Do not inherit to_remove_vfork_catchpoint. */
650 /* Do not inherit to_follow_fork. */
651 /* Do not inherit to_insert_exec_catchpoint. */
652 /* Do not inherit to_remove_exec_catchpoint. */
653 /* Do not inherit to_set_syscall_catchpoint. */
654 /* Do not inherit to_has_exited. */
655 /* Do not inherit to_mourn_inferior. */
656 /* Do not inherit to_can_run. */
657 /* Do not inherit to_pass_signals. */
658 /* Do not inherit to_program_signals. */
659 /* Do not inherit to_thread_alive. */
660 /* Do not inherit to_find_new_threads. */
661 /* Do not inherit to_pid_to_str. */
662 /* Do not inherit to_extra_thread_info. */
663 /* Do not inherit to_thread_name. */
664 /* Do not inherit to_stop. */
665 /* Do not inherit to_xfer_partial. */
666 /* Do not inherit to_rcmd. */
667 /* Do not inherit to_pid_to_exec_file. */
668 /* Do not inherit to_log_command. */
669 INHERIT (to_stratum, t);
670 /* Do not inherit to_has_all_memory. */
671 /* Do not inherit to_has_memory. */
672 /* Do not inherit to_has_stack. */
673 /* Do not inherit to_has_registers. */
674 /* Do not inherit to_has_execution. */
675 INHERIT (to_has_thread_control, t);
676 /* Do not inherit to_can_async_p. */
677 /* Do not inherit to_is_async_p. */
678 /* Do not inherit to_async. */
679 /* Do not inherit to_find_memory_regions. */
680 /* Do not inherit to_make_corefile_notes. */
681 /* Do not inherit to_get_bookmark. */
682 /* Do not inherit to_goto_bookmark. */
683 /* Do not inherit to_get_thread_local_address. */
684 /* Do not inherit to_can_execute_reverse. */
685 /* Do not inherit to_execution_direction. */
686 /* Do not inherit to_thread_architecture. */
687 /* Do not inherit to_read_description. */
688 /* Do not inherit to_get_ada_task_ptid. */
689 /* Do not inherit to_search_memory. */
690 /* Do not inherit to_supports_multi_process. */
691 /* Do not inherit to_supports_enable_disable_tracepoint. */
692 /* Do not inherit to_supports_string_tracing. */
693 /* Do not inherit to_trace_init. */
694 /* Do not inherit to_download_tracepoint. */
695 /* Do not inherit to_can_download_tracepoint. */
696 /* Do not inherit to_download_trace_state_variable. */
697 /* Do not inherit to_enable_tracepoint. */
698 /* Do not inherit to_disable_tracepoint. */
699 /* Do not inherit to_trace_set_readonly_regions. */
700 /* Do not inherit to_trace_start. */
701 /* Do not inherit to_get_trace_status. */
702 /* Do not inherit to_get_tracepoint_status. */
703 /* Do not inherit to_trace_stop. */
704 /* Do not inherit to_trace_find. */
705 /* Do not inherit to_get_trace_state_variable_value. */
706 /* Do not inherit to_save_trace_data. */
707 /* Do not inherit to_upload_tracepoints. */
708 /* Do not inherit to_upload_trace_state_variables. */
709 /* Do not inherit to_get_raw_trace_data. */
710 /* Do not inherit to_get_min_fast_tracepoint_insn_len. */
711 /* Do not inherit to_set_disconnected_tracing. */
712 /* Do not inherit to_set_circular_trace_buffer. */
713 /* Do not inherit to_set_trace_buffer_size. */
714 /* Do not inherit to_set_trace_notes. */
715 /* Do not inherit to_get_tib_address. */
716 /* Do not inherit to_set_permissions. */
717 /* Do not inherit to_static_tracepoint_marker_at. */
718 /* Do not inherit to_static_tracepoint_markers_by_strid. */
719 /* Do not inherit to_traceframe_info. */
720 /* Do not inherit to_use_agent. */
721 /* Do not inherit to_can_use_agent. */
722 /* Do not inherit to_augmented_libraries_svr4_read. */
723 INHERIT (to_magic, t);
725 to_supports_evaluation_of_breakpoint_conditions. */
726 /* Do not inherit to_can_run_breakpoint_commands. */
727 /* Do not inherit to_memory_map. */
728 /* Do not inherit to_flash_erase. */
729 /* Do not inherit to_flash_done. */
733 /* Clean up a target struct so it no longer has any zero pointers in
734 it. Some entries are defaulted to a method that print an error,
735 others are hard-wired to a standard recursive default. */
737 #define de_fault(field, value) \
738 if (!current_target.field) \
739 current_target.field = value
742 (void (*) (char *, int))
745 (void (*) (struct target_ops *))
747 de_fault (deprecated_xfer_memory,
748 (int (*) (CORE_ADDR, gdb_byte *, int, int,
749 struct mem_attrib *, struct target_ops *))
751 current_target.to_read_description = NULL;
755 /* Finally, position the target-stack beneath the squashed
756 "current_target". That way code looking for a non-inherited
757 target method can quickly and simply find it. */
758 current_target.beneath = target_stack;
761 setup_target_debug ();
764 /* Push a new target type into the stack of the existing target accessors,
765 possibly superseding some of the existing accessors.
767 Rather than allow an empty stack, we always have the dummy target at
768 the bottom stratum, so we can call the function vectors without
772 push_target (struct target_ops *t)
774 struct target_ops **cur;
776 /* Check magic number. If wrong, it probably means someone changed
777 the struct definition, but not all the places that initialize one. */
778 if (t->to_magic != OPS_MAGIC)
780 fprintf_unfiltered (gdb_stderr,
781 "Magic number of %s target struct wrong\n",
783 internal_error (__FILE__, __LINE__,
784 _("failed internal consistency check"));
787 /* Find the proper stratum to install this target in. */
788 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
790 if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum)
794 /* If there's already targets at this stratum, remove them. */
795 /* FIXME: cagney/2003-10-15: I think this should be popping all
796 targets to CUR, and not just those at this stratum level. */
797 while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum)
799 /* There's already something at this stratum level. Close it,
800 and un-hook it from the stack. */
801 struct target_ops *tmp = (*cur);
803 (*cur) = (*cur)->beneath;
808 /* We have removed all targets in our stratum, now add the new one. */
812 update_current_target ();
815 /* Remove a target_ops vector from the stack, wherever it may be.
816 Return how many times it was removed (0 or 1). */
819 unpush_target (struct target_ops *t)
821 struct target_ops **cur;
822 struct target_ops *tmp;
824 if (t->to_stratum == dummy_stratum)
825 internal_error (__FILE__, __LINE__,
826 _("Attempt to unpush the dummy target"));
828 /* Look for the specified target. Note that we assume that a target
829 can only occur once in the target stack. */
831 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
837 /* If we don't find target_ops, quit. Only open targets should be
842 /* Unchain the target. */
844 (*cur) = (*cur)->beneath;
847 update_current_target ();
849 /* Finally close the target. Note we do this after unchaining, so
850 any target method calls from within the target_close
851 implementation don't end up in T anymore. */
858 pop_all_targets_above (enum strata above_stratum)
860 while ((int) (current_target.to_stratum) > (int) above_stratum)
862 if (!unpush_target (target_stack))
864 fprintf_unfiltered (gdb_stderr,
865 "pop_all_targets couldn't find target %s\n",
866 target_stack->to_shortname);
867 internal_error (__FILE__, __LINE__,
868 _("failed internal consistency check"));
875 pop_all_targets (void)
877 pop_all_targets_above (dummy_stratum);
880 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
883 target_is_pushed (struct target_ops *t)
885 struct target_ops **cur;
887 /* Check magic number. If wrong, it probably means someone changed
888 the struct definition, but not all the places that initialize one. */
889 if (t->to_magic != OPS_MAGIC)
891 fprintf_unfiltered (gdb_stderr,
892 "Magic number of %s target struct wrong\n",
894 internal_error (__FILE__, __LINE__,
895 _("failed internal consistency check"));
898 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
905 /* Using the objfile specified in OBJFILE, find the address for the
906 current thread's thread-local storage with offset OFFSET. */
908 target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset)
910 volatile CORE_ADDR addr = 0;
911 struct target_ops *target;
913 for (target = current_target.beneath;
915 target = target->beneath)
917 if (target->to_get_thread_local_address != NULL)
922 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
924 ptid_t ptid = inferior_ptid;
925 volatile struct gdb_exception ex;
927 TRY_CATCH (ex, RETURN_MASK_ALL)
931 /* Fetch the load module address for this objfile. */
932 lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (),
934 /* If it's 0, throw the appropriate exception. */
936 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR,
937 _("TLS load module not found"));
939 addr = target->to_get_thread_local_address (target, ptid,
942 /* If an error occurred, print TLS related messages here. Otherwise,
943 throw the error to some higher catcher. */
946 int objfile_is_library = (objfile->flags & OBJF_SHARED);
950 case TLS_NO_LIBRARY_SUPPORT_ERROR:
951 error (_("Cannot find thread-local variables "
952 "in this thread library."));
954 case TLS_LOAD_MODULE_NOT_FOUND_ERROR:
955 if (objfile_is_library)
956 error (_("Cannot find shared library `%s' in dynamic"
957 " linker's load module list"), objfile_name (objfile));
959 error (_("Cannot find executable file `%s' in dynamic"
960 " linker's load module list"), objfile_name (objfile));
962 case TLS_NOT_ALLOCATED_YET_ERROR:
963 if (objfile_is_library)
964 error (_("The inferior has not yet allocated storage for"
965 " thread-local variables in\n"
966 "the shared library `%s'\n"
968 objfile_name (objfile), target_pid_to_str (ptid));
970 error (_("The inferior has not yet allocated storage for"
971 " thread-local variables in\n"
972 "the executable `%s'\n"
974 objfile_name (objfile), target_pid_to_str (ptid));
976 case TLS_GENERIC_ERROR:
977 if (objfile_is_library)
978 error (_("Cannot find thread-local storage for %s, "
979 "shared library %s:\n%s"),
980 target_pid_to_str (ptid),
981 objfile_name (objfile), ex.message);
983 error (_("Cannot find thread-local storage for %s, "
984 "executable file %s:\n%s"),
985 target_pid_to_str (ptid),
986 objfile_name (objfile), ex.message);
989 throw_exception (ex);
994 /* It wouldn't be wrong here to try a gdbarch method, too; finding
995 TLS is an ABI-specific thing. But we don't do that yet. */
997 error (_("Cannot find thread-local variables on this target"));
1003 target_xfer_status_to_string (enum target_xfer_status err)
1005 #define CASE(X) case X: return #X
1008 CASE(TARGET_XFER_E_IO);
1009 CASE(TARGET_XFER_E_UNAVAILABLE);
1018 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1020 /* target_read_string -- read a null terminated string, up to LEN bytes,
1021 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1022 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1023 is responsible for freeing it. Return the number of bytes successfully
1027 target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop)
1029 int tlen, offset, i;
1033 int buffer_allocated;
1035 unsigned int nbytes_read = 0;
1037 gdb_assert (string);
1039 /* Small for testing. */
1040 buffer_allocated = 4;
1041 buffer = xmalloc (buffer_allocated);
1046 tlen = MIN (len, 4 - (memaddr & 3));
1047 offset = memaddr & 3;
1049 errcode = target_read_memory (memaddr & ~3, buf, sizeof buf);
1052 /* The transfer request might have crossed the boundary to an
1053 unallocated region of memory. Retry the transfer, requesting
1057 errcode = target_read_memory (memaddr, buf, 1);
1062 if (bufptr - buffer + tlen > buffer_allocated)
1066 bytes = bufptr - buffer;
1067 buffer_allocated *= 2;
1068 buffer = xrealloc (buffer, buffer_allocated);
1069 bufptr = buffer + bytes;
1072 for (i = 0; i < tlen; i++)
1074 *bufptr++ = buf[i + offset];
1075 if (buf[i + offset] == '\000')
1077 nbytes_read += i + 1;
1084 nbytes_read += tlen;
1093 struct target_section_table *
1094 target_get_section_table (struct target_ops *target)
1097 fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n");
1099 return (*target->to_get_section_table) (target);
1102 /* Find a section containing ADDR. */
1104 struct target_section *
1105 target_section_by_addr (struct target_ops *target, CORE_ADDR addr)
1107 struct target_section_table *table = target_get_section_table (target);
1108 struct target_section *secp;
1113 for (secp = table->sections; secp < table->sections_end; secp++)
1115 if (addr >= secp->addr && addr < secp->endaddr)
1121 /* Read memory from the live target, even if currently inspecting a
1122 traceframe. The return is the same as that of target_read. */
1124 static enum target_xfer_status
1125 target_read_live_memory (enum target_object object,
1126 ULONGEST memaddr, gdb_byte *myaddr, ULONGEST len,
1127 ULONGEST *xfered_len)
1129 enum target_xfer_status ret;
1130 struct cleanup *cleanup;
1132 /* Switch momentarily out of tfind mode so to access live memory.
1133 Note that this must not clear global state, such as the frame
1134 cache, which must still remain valid for the previous traceframe.
1135 We may be _building_ the frame cache at this point. */
1136 cleanup = make_cleanup_restore_traceframe_number ();
1137 set_traceframe_number (-1);
1139 ret = target_xfer_partial (current_target.beneath, object, NULL,
1140 myaddr, NULL, memaddr, len, xfered_len);
1142 do_cleanups (cleanup);
1146 /* Using the set of read-only target sections of OPS, read live
1147 read-only memory. Note that the actual reads start from the
1148 top-most target again.
1150 For interface/parameters/return description see target.h,
1153 static enum target_xfer_status
1154 memory_xfer_live_readonly_partial (struct target_ops *ops,
1155 enum target_object object,
1156 gdb_byte *readbuf, ULONGEST memaddr,
1157 ULONGEST len, ULONGEST *xfered_len)
1159 struct target_section *secp;
1160 struct target_section_table *table;
1162 secp = target_section_by_addr (ops, memaddr);
1164 && (bfd_get_section_flags (secp->the_bfd_section->owner,
1165 secp->the_bfd_section)
1168 struct target_section *p;
1169 ULONGEST memend = memaddr + len;
1171 table = target_get_section_table (ops);
1173 for (p = table->sections; p < table->sections_end; p++)
1175 if (memaddr >= p->addr)
1177 if (memend <= p->endaddr)
1179 /* Entire transfer is within this section. */
1180 return target_read_live_memory (object, memaddr,
1181 readbuf, len, xfered_len);
1183 else if (memaddr >= p->endaddr)
1185 /* This section ends before the transfer starts. */
1190 /* This section overlaps the transfer. Just do half. */
1191 len = p->endaddr - memaddr;
1192 return target_read_live_memory (object, memaddr,
1193 readbuf, len, xfered_len);
1199 return TARGET_XFER_EOF;
1202 /* Read memory from more than one valid target. A core file, for
1203 instance, could have some of memory but delegate other bits to
1204 the target below it. So, we must manually try all targets. */
1206 static enum target_xfer_status
1207 raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf,
1208 const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len,
1209 ULONGEST *xfered_len)
1211 enum target_xfer_status res;
1215 res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL,
1216 readbuf, writebuf, memaddr, len,
1218 if (res == TARGET_XFER_OK)
1221 /* Stop if the target reports that the memory is not available. */
1222 if (res == TARGET_XFER_E_UNAVAILABLE)
1225 /* We want to continue past core files to executables, but not
1226 past a running target's memory. */
1227 if (ops->to_has_all_memory (ops))
1232 while (ops != NULL);
1237 /* Perform a partial memory transfer.
1238 For docs see target.h, to_xfer_partial. */
1240 static enum target_xfer_status
1241 memory_xfer_partial_1 (struct target_ops *ops, enum target_object object,
1242 gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr,
1243 ULONGEST len, ULONGEST *xfered_len)
1245 enum target_xfer_status res;
1247 struct mem_region *region;
1248 struct inferior *inf;
1250 /* For accesses to unmapped overlay sections, read directly from
1251 files. Must do this first, as MEMADDR may need adjustment. */
1252 if (readbuf != NULL && overlay_debugging)
1254 struct obj_section *section = find_pc_overlay (memaddr);
1256 if (pc_in_unmapped_range (memaddr, section))
1258 struct target_section_table *table
1259 = target_get_section_table (ops);
1260 const char *section_name = section->the_bfd_section->name;
1262 memaddr = overlay_mapped_address (memaddr, section);
1263 return section_table_xfer_memory_partial (readbuf, writebuf,
1264 memaddr, len, xfered_len,
1266 table->sections_end,
1271 /* Try the executable files, if "trust-readonly-sections" is set. */
1272 if (readbuf != NULL && trust_readonly)
1274 struct target_section *secp;
1275 struct target_section_table *table;
1277 secp = target_section_by_addr (ops, memaddr);
1279 && (bfd_get_section_flags (secp->the_bfd_section->owner,
1280 secp->the_bfd_section)
1283 table = target_get_section_table (ops);
1284 return section_table_xfer_memory_partial (readbuf, writebuf,
1285 memaddr, len, xfered_len,
1287 table->sections_end,
1292 /* If reading unavailable memory in the context of traceframes, and
1293 this address falls within a read-only section, fallback to
1294 reading from live memory. */
1295 if (readbuf != NULL && get_traceframe_number () != -1)
1297 VEC(mem_range_s) *available;
1299 /* If we fail to get the set of available memory, then the
1300 target does not support querying traceframe info, and so we
1301 attempt reading from the traceframe anyway (assuming the
1302 target implements the old QTro packet then). */
1303 if (traceframe_available_memory (&available, memaddr, len))
1305 struct cleanup *old_chain;
1307 old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available);
1309 if (VEC_empty (mem_range_s, available)
1310 || VEC_index (mem_range_s, available, 0)->start != memaddr)
1312 /* Don't read into the traceframe's available
1314 if (!VEC_empty (mem_range_s, available))
1316 LONGEST oldlen = len;
1318 len = VEC_index (mem_range_s, available, 0)->start - memaddr;
1319 gdb_assert (len <= oldlen);
1322 do_cleanups (old_chain);
1324 /* This goes through the topmost target again. */
1325 res = memory_xfer_live_readonly_partial (ops, object,
1328 if (res == TARGET_XFER_OK)
1329 return TARGET_XFER_OK;
1332 /* No use trying further, we know some memory starting
1333 at MEMADDR isn't available. */
1335 return TARGET_XFER_E_UNAVAILABLE;
1339 /* Don't try to read more than how much is available, in
1340 case the target implements the deprecated QTro packet to
1341 cater for older GDBs (the target's knowledge of read-only
1342 sections may be outdated by now). */
1343 len = VEC_index (mem_range_s, available, 0)->length;
1345 do_cleanups (old_chain);
1349 /* Try GDB's internal data cache. */
1350 region = lookup_mem_region (memaddr);
1351 /* region->hi == 0 means there's no upper bound. */
1352 if (memaddr + len < region->hi || region->hi == 0)
1355 reg_len = region->hi - memaddr;
1357 switch (region->attrib.mode)
1360 if (writebuf != NULL)
1361 return TARGET_XFER_E_IO;
1365 if (readbuf != NULL)
1366 return TARGET_XFER_E_IO;
1370 /* We only support writing to flash during "load" for now. */
1371 if (writebuf != NULL)
1372 error (_("Writing to flash memory forbidden in this context"));
1376 return TARGET_XFER_E_IO;
1379 if (!ptid_equal (inferior_ptid, null_ptid))
1380 inf = find_inferior_pid (ptid_get_pid (inferior_ptid));
1385 /* The dcache reads whole cache lines; that doesn't play well
1386 with reading from a trace buffer, because reading outside of
1387 the collected memory range fails. */
1388 && get_traceframe_number () == -1
1389 && (region->attrib.cache
1390 || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY)
1391 || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY)))
1393 DCACHE *dcache = target_dcache_get_or_init ();
1396 if (readbuf != NULL)
1397 l = dcache_xfer_memory (ops, dcache, memaddr, readbuf, reg_len, 0);
1399 /* FIXME drow/2006-08-09: If we're going to preserve const
1400 correctness dcache_xfer_memory should take readbuf and
1402 l = dcache_xfer_memory (ops, dcache, memaddr, (void *) writebuf,
1405 return TARGET_XFER_E_IO;
1408 *xfered_len = (ULONGEST) l;
1409 return TARGET_XFER_OK;
1413 /* If none of those methods found the memory we wanted, fall back
1414 to a target partial transfer. Normally a single call to
1415 to_xfer_partial is enough; if it doesn't recognize an object
1416 it will call the to_xfer_partial of the next target down.
1417 But for memory this won't do. Memory is the only target
1418 object which can be read from more than one valid target.
1419 A core file, for instance, could have some of memory but
1420 delegate other bits to the target below it. So, we must
1421 manually try all targets. */
1423 res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len,
1426 /* Make sure the cache gets updated no matter what - if we are writing
1427 to the stack. Even if this write is not tagged as such, we still need
1428 to update the cache. */
1430 if (res == TARGET_XFER_OK
1433 && target_dcache_init_p ()
1434 && !region->attrib.cache
1435 && ((stack_cache_enabled_p () && object != TARGET_OBJECT_STACK_MEMORY)
1436 || (code_cache_enabled_p () && object != TARGET_OBJECT_CODE_MEMORY)))
1438 DCACHE *dcache = target_dcache_get ();
1440 dcache_update (dcache, memaddr, (void *) writebuf, reg_len);
1443 /* If we still haven't got anything, return the last error. We
1448 /* Perform a partial memory transfer. For docs see target.h,
1451 static enum target_xfer_status
1452 memory_xfer_partial (struct target_ops *ops, enum target_object object,
1453 gdb_byte *readbuf, const gdb_byte *writebuf,
1454 ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len)
1456 enum target_xfer_status res;
1458 /* Zero length requests are ok and require no work. */
1460 return TARGET_XFER_EOF;
1462 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1463 breakpoint insns, thus hiding out from higher layers whether
1464 there are software breakpoints inserted in the code stream. */
1465 if (readbuf != NULL)
1467 res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len,
1470 if (res == TARGET_XFER_OK && !show_memory_breakpoints)
1471 breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, res);
1476 struct cleanup *old_chain;
1478 /* A large write request is likely to be partially satisfied
1479 by memory_xfer_partial_1. We will continually malloc
1480 and free a copy of the entire write request for breakpoint
1481 shadow handling even though we only end up writing a small
1482 subset of it. Cap writes to 4KB to mitigate this. */
1483 len = min (4096, len);
1485 buf = xmalloc (len);
1486 old_chain = make_cleanup (xfree, buf);
1487 memcpy (buf, writebuf, len);
1489 breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len);
1490 res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len,
1493 do_cleanups (old_chain);
1500 restore_show_memory_breakpoints (void *arg)
1502 show_memory_breakpoints = (uintptr_t) arg;
1506 make_show_memory_breakpoints_cleanup (int show)
1508 int current = show_memory_breakpoints;
1510 show_memory_breakpoints = show;
1511 return make_cleanup (restore_show_memory_breakpoints,
1512 (void *) (uintptr_t) current);
1515 /* For docs see target.h, to_xfer_partial. */
1517 enum target_xfer_status
1518 target_xfer_partial (struct target_ops *ops,
1519 enum target_object object, const char *annex,
1520 gdb_byte *readbuf, const gdb_byte *writebuf,
1521 ULONGEST offset, ULONGEST len,
1522 ULONGEST *xfered_len)
1524 enum target_xfer_status retval;
1526 gdb_assert (ops->to_xfer_partial != NULL);
1528 /* Transfer is done when LEN is zero. */
1530 return TARGET_XFER_EOF;
1532 if (writebuf && !may_write_memory)
1533 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1534 core_addr_to_string_nz (offset), plongest (len));
1538 /* If this is a memory transfer, let the memory-specific code
1539 have a look at it instead. Memory transfers are more
1541 if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY
1542 || object == TARGET_OBJECT_CODE_MEMORY)
1543 retval = memory_xfer_partial (ops, object, readbuf,
1544 writebuf, offset, len, xfered_len);
1545 else if (object == TARGET_OBJECT_RAW_MEMORY)
1547 /* Request the normal memory object from other layers. */
1548 retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len,
1552 retval = ops->to_xfer_partial (ops, object, annex, readbuf,
1553 writebuf, offset, len, xfered_len);
1557 const unsigned char *myaddr = NULL;
1559 fprintf_unfiltered (gdb_stdlog,
1560 "%s:target_xfer_partial "
1561 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1564 (annex ? annex : "(null)"),
1565 host_address_to_string (readbuf),
1566 host_address_to_string (writebuf),
1567 core_addr_to_string_nz (offset),
1568 pulongest (len), retval,
1569 pulongest (*xfered_len));
1575 if (retval == TARGET_XFER_OK && myaddr != NULL)
1579 fputs_unfiltered (", bytes =", gdb_stdlog);
1580 for (i = 0; i < *xfered_len; i++)
1582 if ((((intptr_t) &(myaddr[i])) & 0xf) == 0)
1584 if (targetdebug < 2 && i > 0)
1586 fprintf_unfiltered (gdb_stdlog, " ...");
1589 fprintf_unfiltered (gdb_stdlog, "\n");
1592 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
1596 fputc_unfiltered ('\n', gdb_stdlog);
1599 /* Check implementations of to_xfer_partial update *XFERED_LEN
1600 properly. Do assertion after printing debug messages, so that we
1601 can find more clues on assertion failure from debugging messages. */
1602 if (retval == TARGET_XFER_OK || retval == TARGET_XFER_E_UNAVAILABLE)
1603 gdb_assert (*xfered_len > 0);
1608 /* Read LEN bytes of target memory at address MEMADDR, placing the
1609 results in GDB's memory at MYADDR. Returns either 0 for success or
1610 TARGET_XFER_E_IO if any error occurs.
1612 If an error occurs, no guarantee is made about the contents of the data at
1613 MYADDR. In particular, the caller should not depend upon partial reads
1614 filling the buffer with good data. There is no way for the caller to know
1615 how much good data might have been transfered anyway. Callers that can
1616 deal with partial reads should call target_read (which will retry until
1617 it makes no progress, and then return how much was transferred). */
1620 target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1622 /* Dispatch to the topmost target, not the flattened current_target.
1623 Memory accesses check target->to_has_(all_)memory, and the
1624 flattened target doesn't inherit those. */
1625 if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL,
1626 myaddr, memaddr, len) == len)
1629 return TARGET_XFER_E_IO;
1632 /* Like target_read_memory, but specify explicitly that this is a read
1633 from the target's raw memory. That is, this read bypasses the
1634 dcache, breakpoint shadowing, etc. */
1637 target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1639 /* See comment in target_read_memory about why the request starts at
1640 current_target.beneath. */
1641 if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL,
1642 myaddr, memaddr, len) == len)
1645 return TARGET_XFER_E_IO;
1648 /* Like target_read_memory, but specify explicitly that this is a read from
1649 the target's stack. This may trigger different cache behavior. */
1652 target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1654 /* See comment in target_read_memory about why the request starts at
1655 current_target.beneath. */
1656 if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL,
1657 myaddr, memaddr, len) == len)
1660 return TARGET_XFER_E_IO;
1663 /* Like target_read_memory, but specify explicitly that this is a read from
1664 the target's code. This may trigger different cache behavior. */
1667 target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1669 /* See comment in target_read_memory about why the request starts at
1670 current_target.beneath. */
1671 if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL,
1672 myaddr, memaddr, len) == len)
1675 return TARGET_XFER_E_IO;
1678 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1679 Returns either 0 for success or TARGET_XFER_E_IO if any
1680 error occurs. If an error occurs, no guarantee is made about how
1681 much data got written. Callers that can deal with partial writes
1682 should call target_write. */
1685 target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
1687 /* See comment in target_read_memory about why the request starts at
1688 current_target.beneath. */
1689 if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL,
1690 myaddr, memaddr, len) == len)
1693 return TARGET_XFER_E_IO;
1696 /* Write LEN bytes from MYADDR to target raw memory at address
1697 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1698 if any error occurs. If an error occurs, no guarantee is made
1699 about how much data got written. Callers that can deal with
1700 partial writes should call target_write. */
1703 target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
1705 /* See comment in target_read_memory about why the request starts at
1706 current_target.beneath. */
1707 if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL,
1708 myaddr, memaddr, len) == len)
1711 return TARGET_XFER_E_IO;
1714 /* Fetch the target's memory map. */
1717 target_memory_map (void)
1719 VEC(mem_region_s) *result;
1720 struct mem_region *last_one, *this_one;
1722 struct target_ops *t;
1725 fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n");
1727 result = current_target.to_memory_map (¤t_target);
1731 qsort (VEC_address (mem_region_s, result),
1732 VEC_length (mem_region_s, result),
1733 sizeof (struct mem_region), mem_region_cmp);
1735 /* Check that regions do not overlap. Simultaneously assign
1736 a numbering for the "mem" commands to use to refer to
1739 for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++)
1741 this_one->number = ix;
1743 if (last_one && last_one->hi > this_one->lo)
1745 warning (_("Overlapping regions in memory map: ignoring"));
1746 VEC_free (mem_region_s, result);
1749 last_one = this_one;
1756 target_flash_erase (ULONGEST address, LONGEST length)
1759 fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n",
1760 hex_string (address), phex (length, 0));
1761 current_target.to_flash_erase (¤t_target, address, length);
1765 target_flash_done (void)
1768 fprintf_unfiltered (gdb_stdlog, "target_flash_done\n");
1769 current_target.to_flash_done (¤t_target);
1773 show_trust_readonly (struct ui_file *file, int from_tty,
1774 struct cmd_list_element *c, const char *value)
1776 fprintf_filtered (file,
1777 _("Mode for reading from readonly sections is %s.\n"),
1781 /* More generic transfers. */
1783 static enum target_xfer_status
1784 default_xfer_partial (struct target_ops *ops, enum target_object object,
1785 const char *annex, gdb_byte *readbuf,
1786 const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
1787 ULONGEST *xfered_len)
1789 if (object == TARGET_OBJECT_MEMORY
1790 && ops->deprecated_xfer_memory != NULL)
1791 /* If available, fall back to the target's
1792 "deprecated_xfer_memory" method. */
1797 if (writebuf != NULL)
1799 void *buffer = xmalloc (len);
1800 struct cleanup *cleanup = make_cleanup (xfree, buffer);
1802 memcpy (buffer, writebuf, len);
1803 xfered = ops->deprecated_xfer_memory (offset, buffer, len,
1804 1/*write*/, NULL, ops);
1805 do_cleanups (cleanup);
1807 if (readbuf != NULL)
1808 xfered = ops->deprecated_xfer_memory (offset, readbuf, len,
1809 0/*read*/, NULL, ops);
1812 *xfered_len = (ULONGEST) xfered;
1813 return TARGET_XFER_E_IO;
1815 else if (xfered == 0 && errno == 0)
1816 /* "deprecated_xfer_memory" uses 0, cross checked against
1817 ERRNO as one indication of an error. */
1818 return TARGET_XFER_EOF;
1820 return TARGET_XFER_E_IO;
1824 gdb_assert (ops->beneath != NULL);
1825 return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
1826 readbuf, writebuf, offset, len,
1831 /* Target vector read/write partial wrapper functions. */
1833 static enum target_xfer_status
1834 target_read_partial (struct target_ops *ops,
1835 enum target_object object,
1836 const char *annex, gdb_byte *buf,
1837 ULONGEST offset, ULONGEST len,
1838 ULONGEST *xfered_len)
1840 return target_xfer_partial (ops, object, annex, buf, NULL, offset, len,
1844 static enum target_xfer_status
1845 target_write_partial (struct target_ops *ops,
1846 enum target_object object,
1847 const char *annex, const gdb_byte *buf,
1848 ULONGEST offset, LONGEST len, ULONGEST *xfered_len)
1850 return target_xfer_partial (ops, object, annex, NULL, buf, offset, len,
1854 /* Wrappers to perform the full transfer. */
1856 /* For docs on target_read see target.h. */
1859 target_read (struct target_ops *ops,
1860 enum target_object object,
1861 const char *annex, gdb_byte *buf,
1862 ULONGEST offset, LONGEST len)
1866 while (xfered < len)
1868 ULONGEST xfered_len;
1869 enum target_xfer_status status;
1871 status = target_read_partial (ops, object, annex,
1872 (gdb_byte *) buf + xfered,
1873 offset + xfered, len - xfered,
1876 /* Call an observer, notifying them of the xfer progress? */
1877 if (status == TARGET_XFER_EOF)
1879 else if (status == TARGET_XFER_OK)
1881 xfered += xfered_len;
1891 /* Assuming that the entire [begin, end) range of memory cannot be
1892 read, try to read whatever subrange is possible to read.
1894 The function returns, in RESULT, either zero or one memory block.
1895 If there's a readable subrange at the beginning, it is completely
1896 read and returned. Any further readable subrange will not be read.
1897 Otherwise, if there's a readable subrange at the end, it will be
1898 completely read and returned. Any readable subranges before it
1899 (obviously, not starting at the beginning), will be ignored. In
1900 other cases -- either no readable subrange, or readable subrange(s)
1901 that is neither at the beginning, or end, nothing is returned.
1903 The purpose of this function is to handle a read across a boundary
1904 of accessible memory in a case when memory map is not available.
1905 The above restrictions are fine for this case, but will give
1906 incorrect results if the memory is 'patchy'. However, supporting
1907 'patchy' memory would require trying to read every single byte,
1908 and it seems unacceptable solution. Explicit memory map is
1909 recommended for this case -- and target_read_memory_robust will
1910 take care of reading multiple ranges then. */
1913 read_whatever_is_readable (struct target_ops *ops,
1914 ULONGEST begin, ULONGEST end,
1915 VEC(memory_read_result_s) **result)
1917 gdb_byte *buf = xmalloc (end - begin);
1918 ULONGEST current_begin = begin;
1919 ULONGEST current_end = end;
1921 memory_read_result_s r;
1922 ULONGEST xfered_len;
1924 /* If we previously failed to read 1 byte, nothing can be done here. */
1925 if (end - begin <= 1)
1931 /* Check that either first or the last byte is readable, and give up
1932 if not. This heuristic is meant to permit reading accessible memory
1933 at the boundary of accessible region. */
1934 if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL,
1935 buf, begin, 1, &xfered_len) == TARGET_XFER_OK)
1940 else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL,
1941 buf + (end-begin) - 1, end - 1, 1,
1942 &xfered_len) == TARGET_XFER_OK)
1953 /* Loop invariant is that the [current_begin, current_end) was previously
1954 found to be not readable as a whole.
1956 Note loop condition -- if the range has 1 byte, we can't divide the range
1957 so there's no point trying further. */
1958 while (current_end - current_begin > 1)
1960 ULONGEST first_half_begin, first_half_end;
1961 ULONGEST second_half_begin, second_half_end;
1963 ULONGEST middle = current_begin + (current_end - current_begin)/2;
1967 first_half_begin = current_begin;
1968 first_half_end = middle;
1969 second_half_begin = middle;
1970 second_half_end = current_end;
1974 first_half_begin = middle;
1975 first_half_end = current_end;
1976 second_half_begin = current_begin;
1977 second_half_end = middle;
1980 xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL,
1981 buf + (first_half_begin - begin),
1983 first_half_end - first_half_begin);
1985 if (xfer == first_half_end - first_half_begin)
1987 /* This half reads up fine. So, the error must be in the
1989 current_begin = second_half_begin;
1990 current_end = second_half_end;
1994 /* This half is not readable. Because we've tried one byte, we
1995 know some part of this half if actually redable. Go to the next
1996 iteration to divide again and try to read.
1998 We don't handle the other half, because this function only tries
1999 to read a single readable subrange. */
2000 current_begin = first_half_begin;
2001 current_end = first_half_end;
2007 /* The [begin, current_begin) range has been read. */
2009 r.end = current_begin;
2014 /* The [current_end, end) range has been read. */
2015 LONGEST rlen = end - current_end;
2017 r.data = xmalloc (rlen);
2018 memcpy (r.data, buf + current_end - begin, rlen);
2019 r.begin = current_end;
2023 VEC_safe_push(memory_read_result_s, (*result), &r);
2027 free_memory_read_result_vector (void *x)
2029 VEC(memory_read_result_s) *v = x;
2030 memory_read_result_s *current;
2033 for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix)
2035 xfree (current->data);
2037 VEC_free (memory_read_result_s, v);
2040 VEC(memory_read_result_s) *
2041 read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len)
2043 VEC(memory_read_result_s) *result = 0;
2046 while (xfered < len)
2048 struct mem_region *region = lookup_mem_region (offset + xfered);
2051 /* If there is no explicit region, a fake one should be created. */
2052 gdb_assert (region);
2054 if (region->hi == 0)
2055 rlen = len - xfered;
2057 rlen = region->hi - offset;
2059 if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO)
2061 /* Cannot read this region. Note that we can end up here only
2062 if the region is explicitly marked inaccessible, or
2063 'inaccessible-by-default' is in effect. */
2068 LONGEST to_read = min (len - xfered, rlen);
2069 gdb_byte *buffer = (gdb_byte *)xmalloc (to_read);
2071 LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2072 (gdb_byte *) buffer,
2073 offset + xfered, to_read);
2074 /* Call an observer, notifying them of the xfer progress? */
2077 /* Got an error reading full chunk. See if maybe we can read
2080 read_whatever_is_readable (ops, offset + xfered,
2081 offset + xfered + to_read, &result);
2086 struct memory_read_result r;
2088 r.begin = offset + xfered;
2089 r.end = r.begin + xfer;
2090 VEC_safe_push (memory_read_result_s, result, &r);
2100 /* An alternative to target_write with progress callbacks. */
2103 target_write_with_progress (struct target_ops *ops,
2104 enum target_object object,
2105 const char *annex, const gdb_byte *buf,
2106 ULONGEST offset, LONGEST len,
2107 void (*progress) (ULONGEST, void *), void *baton)
2111 /* Give the progress callback a chance to set up. */
2113 (*progress) (0, baton);
2115 while (xfered < len)
2117 ULONGEST xfered_len;
2118 enum target_xfer_status status;
2120 status = target_write_partial (ops, object, annex,
2121 (gdb_byte *) buf + xfered,
2122 offset + xfered, len - xfered,
2125 if (status == TARGET_XFER_EOF)
2127 if (TARGET_XFER_STATUS_ERROR_P (status))
2130 gdb_assert (status == TARGET_XFER_OK);
2132 (*progress) (xfered_len, baton);
2134 xfered += xfered_len;
2140 /* For docs on target_write see target.h. */
2143 target_write (struct target_ops *ops,
2144 enum target_object object,
2145 const char *annex, const gdb_byte *buf,
2146 ULONGEST offset, LONGEST len)
2148 return target_write_with_progress (ops, object, annex, buf, offset, len,
2152 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2153 the size of the transferred data. PADDING additional bytes are
2154 available in *BUF_P. This is a helper function for
2155 target_read_alloc; see the declaration of that function for more
2159 target_read_alloc_1 (struct target_ops *ops, enum target_object object,
2160 const char *annex, gdb_byte **buf_p, int padding)
2162 size_t buf_alloc, buf_pos;
2165 /* This function does not have a length parameter; it reads the
2166 entire OBJECT). Also, it doesn't support objects fetched partly
2167 from one target and partly from another (in a different stratum,
2168 e.g. a core file and an executable). Both reasons make it
2169 unsuitable for reading memory. */
2170 gdb_assert (object != TARGET_OBJECT_MEMORY);
2172 /* Start by reading up to 4K at a time. The target will throttle
2173 this number down if necessary. */
2175 buf = xmalloc (buf_alloc);
2179 ULONGEST xfered_len;
2180 enum target_xfer_status status;
2182 status = target_read_partial (ops, object, annex, &buf[buf_pos],
2183 buf_pos, buf_alloc - buf_pos - padding,
2186 if (status == TARGET_XFER_EOF)
2188 /* Read all there was. */
2195 else if (status != TARGET_XFER_OK)
2197 /* An error occurred. */
2199 return TARGET_XFER_E_IO;
2202 buf_pos += xfered_len;
2204 /* If the buffer is filling up, expand it. */
2205 if (buf_alloc < buf_pos * 2)
2208 buf = xrealloc (buf, buf_alloc);
2215 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2216 the size of the transferred data. See the declaration in "target.h"
2217 function for more information about the return value. */
2220 target_read_alloc (struct target_ops *ops, enum target_object object,
2221 const char *annex, gdb_byte **buf_p)
2223 return target_read_alloc_1 (ops, object, annex, buf_p, 0);
2226 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2227 returned as a string, allocated using xmalloc. If an error occurs
2228 or the transfer is unsupported, NULL is returned. Empty objects
2229 are returned as allocated but empty strings. A warning is issued
2230 if the result contains any embedded NUL bytes. */
2233 target_read_stralloc (struct target_ops *ops, enum target_object object,
2238 LONGEST i, transferred;
2240 transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1);
2241 bufstr = (char *) buffer;
2243 if (transferred < 0)
2246 if (transferred == 0)
2247 return xstrdup ("");
2249 bufstr[transferred] = 0;
2251 /* Check for embedded NUL bytes; but allow trailing NULs. */
2252 for (i = strlen (bufstr); i < transferred; i++)
2255 warning (_("target object %d, annex %s, "
2256 "contained unexpected null characters"),
2257 (int) object, annex ? annex : "(none)");
2264 /* Memory transfer methods. */
2267 get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf,
2270 /* This method is used to read from an alternate, non-current
2271 target. This read must bypass the overlay support (as symbols
2272 don't match this target), and GDB's internal cache (wrong cache
2273 for this target). */
2274 if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len)
2276 memory_error (TARGET_XFER_E_IO, addr);
2280 get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr,
2281 int len, enum bfd_endian byte_order)
2283 gdb_byte buf[sizeof (ULONGEST)];
2285 gdb_assert (len <= sizeof (buf));
2286 get_target_memory (ops, addr, buf, len);
2287 return extract_unsigned_integer (buf, len, byte_order);
2293 target_insert_breakpoint (struct gdbarch *gdbarch,
2294 struct bp_target_info *bp_tgt)
2296 if (!may_insert_breakpoints)
2298 warning (_("May not insert breakpoints"));
2302 return current_target.to_insert_breakpoint (¤t_target,
2309 target_remove_breakpoint (struct gdbarch *gdbarch,
2310 struct bp_target_info *bp_tgt)
2312 /* This is kind of a weird case to handle, but the permission might
2313 have been changed after breakpoints were inserted - in which case
2314 we should just take the user literally and assume that any
2315 breakpoints should be left in place. */
2316 if (!may_insert_breakpoints)
2318 warning (_("May not remove breakpoints"));
2322 return current_target.to_remove_breakpoint (¤t_target,
2327 target_info (char *args, int from_tty)
2329 struct target_ops *t;
2330 int has_all_mem = 0;
2332 if (symfile_objfile != NULL)
2333 printf_unfiltered (_("Symbols from \"%s\".\n"),
2334 objfile_name (symfile_objfile));
2336 for (t = target_stack; t != NULL; t = t->beneath)
2338 if (!(*t->to_has_memory) (t))
2341 if ((int) (t->to_stratum) <= (int) dummy_stratum)
2344 printf_unfiltered (_("\tWhile running this, "
2345 "GDB does not access memory from...\n"));
2346 printf_unfiltered ("%s:\n", t->to_longname);
2347 (t->to_files_info) (t);
2348 has_all_mem = (*t->to_has_all_memory) (t);
2352 /* This function is called before any new inferior is created, e.g.
2353 by running a program, attaching, or connecting to a target.
2354 It cleans up any state from previous invocations which might
2355 change between runs. This is a subset of what target_preopen
2356 resets (things which might change between targets). */
2359 target_pre_inferior (int from_tty)
2361 /* Clear out solib state. Otherwise the solib state of the previous
2362 inferior might have survived and is entirely wrong for the new
2363 target. This has been observed on GNU/Linux using glibc 2.3. How
2375 Cannot access memory at address 0xdeadbeef
2378 /* In some OSs, the shared library list is the same/global/shared
2379 across inferiors. If code is shared between processes, so are
2380 memory regions and features. */
2381 if (!gdbarch_has_global_solist (target_gdbarch ()))
2383 no_shared_libraries (NULL, from_tty);
2385 invalidate_target_mem_regions ();
2387 target_clear_description ();
2390 agent_capability_invalidate ();
2393 /* Callback for iterate_over_inferiors. Gets rid of the given
2397 dispose_inferior (struct inferior *inf, void *args)
2399 struct thread_info *thread;
2401 thread = any_thread_of_process (inf->pid);
2404 switch_to_thread (thread->ptid);
2406 /* Core inferiors actually should be detached, not killed. */
2407 if (target_has_execution)
2410 target_detach (NULL, 0);
2416 /* This is to be called by the open routine before it does
2420 target_preopen (int from_tty)
2424 if (have_inferiors ())
2427 || !have_live_inferiors ()
2428 || query (_("A program is being debugged already. Kill it? ")))
2429 iterate_over_inferiors (dispose_inferior, NULL);
2431 error (_("Program not killed."));
2434 /* Calling target_kill may remove the target from the stack. But if
2435 it doesn't (which seems like a win for UDI), remove it now. */
2436 /* Leave the exec target, though. The user may be switching from a
2437 live process to a core of the same program. */
2438 pop_all_targets_above (file_stratum);
2440 target_pre_inferior (from_tty);
2443 /* Detach a target after doing deferred register stores. */
2446 target_detach (const char *args, int from_tty)
2448 struct target_ops* t;
2450 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2451 /* Don't remove global breakpoints here. They're removed on
2452 disconnection from the target. */
2455 /* If we're in breakpoints-always-inserted mode, have to remove
2456 them before detaching. */
2457 remove_breakpoints_pid (ptid_get_pid (inferior_ptid));
2459 prepare_for_detach ();
2461 current_target.to_detach (¤t_target, args, from_tty);
2463 fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n",
2468 target_disconnect (char *args, int from_tty)
2470 /* If we're in breakpoints-always-inserted mode or if breakpoints
2471 are global across processes, we have to remove them before
2473 remove_breakpoints ();
2476 fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n",
2478 current_target.to_disconnect (¤t_target, args, from_tty);
2482 target_wait (ptid_t ptid, struct target_waitstatus *status, int options)
2484 struct target_ops *t;
2485 ptid_t retval = (current_target.to_wait) (¤t_target, ptid,
2490 char *status_string;
2491 char *options_string;
2493 status_string = target_waitstatus_to_string (status);
2494 options_string = target_options_to_string (options);
2495 fprintf_unfiltered (gdb_stdlog,
2496 "target_wait (%d, status, options={%s})"
2498 ptid_get_pid (ptid), options_string,
2499 ptid_get_pid (retval), status_string);
2500 xfree (status_string);
2501 xfree (options_string);
2508 target_pid_to_str (ptid_t ptid)
2510 return (*current_target.to_pid_to_str) (¤t_target, ptid);
2514 target_thread_name (struct thread_info *info)
2516 return current_target.to_thread_name (¤t_target, info);
2520 target_resume (ptid_t ptid, int step, enum gdb_signal signal)
2522 struct target_ops *t;
2524 target_dcache_invalidate ();
2526 current_target.to_resume (¤t_target, ptid, step, signal);
2528 fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n",
2529 ptid_get_pid (ptid),
2530 step ? "step" : "continue",
2531 gdb_signal_to_name (signal));
2533 registers_changed_ptid (ptid);
2534 set_executing (ptid, 1);
2535 set_running (ptid, 1);
2536 clear_inline_frame_state (ptid);
2540 target_pass_signals (int numsigs, unsigned char *pass_signals)
2546 fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {",
2549 for (i = 0; i < numsigs; i++)
2550 if (pass_signals[i])
2551 fprintf_unfiltered (gdb_stdlog, " %s",
2552 gdb_signal_to_name (i));
2554 fprintf_unfiltered (gdb_stdlog, " })\n");
2557 (*current_target.to_pass_signals) (¤t_target, numsigs, pass_signals);
2561 target_program_signals (int numsigs, unsigned char *program_signals)
2567 fprintf_unfiltered (gdb_stdlog, "target_program_signals (%d, {",
2570 for (i = 0; i < numsigs; i++)
2571 if (program_signals[i])
2572 fprintf_unfiltered (gdb_stdlog, " %s",
2573 gdb_signal_to_name (i));
2575 fprintf_unfiltered (gdb_stdlog, " })\n");
2578 (*current_target.to_program_signals) (¤t_target,
2579 numsigs, program_signals);
2583 default_follow_fork (struct target_ops *self, int follow_child,
2586 /* Some target returned a fork event, but did not know how to follow it. */
2587 internal_error (__FILE__, __LINE__,
2588 _("could not find a target to follow fork"));
2591 /* Look through the list of possible targets for a target that can
2595 target_follow_fork (int follow_child, int detach_fork)
2597 int retval = current_target.to_follow_fork (¤t_target,
2598 follow_child, detach_fork);
2601 fprintf_unfiltered (gdb_stdlog,
2602 "target_follow_fork (%d, %d) = %d\n",
2603 follow_child, detach_fork, retval);
2608 default_mourn_inferior (struct target_ops *self)
2610 internal_error (__FILE__, __LINE__,
2611 _("could not find a target to follow mourn inferior"));
2615 target_mourn_inferior (void)
2617 current_target.to_mourn_inferior (¤t_target);
2619 fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n");
2621 /* We no longer need to keep handles on any of the object files.
2622 Make sure to release them to avoid unnecessarily locking any
2623 of them while we're not actually debugging. */
2624 bfd_cache_close_all ();
2627 /* Look for a target which can describe architectural features, starting
2628 from TARGET. If we find one, return its description. */
2630 const struct target_desc *
2631 target_read_description (struct target_ops *target)
2633 struct target_ops *t;
2635 for (t = target; t != NULL; t = t->beneath)
2636 if (t->to_read_description != NULL)
2638 const struct target_desc *tdesc;
2640 tdesc = t->to_read_description (t);
2648 /* This implements a basic search of memory, reading target memory and
2649 performing the search here (as opposed to performing the search in on the
2650 target side with, for example, gdbserver). */
2653 simple_search_memory (struct target_ops *ops,
2654 CORE_ADDR start_addr, ULONGEST search_space_len,
2655 const gdb_byte *pattern, ULONGEST pattern_len,
2656 CORE_ADDR *found_addrp)
2658 /* NOTE: also defined in find.c testcase. */
2659 #define SEARCH_CHUNK_SIZE 16000
2660 const unsigned chunk_size = SEARCH_CHUNK_SIZE;
2661 /* Buffer to hold memory contents for searching. */
2662 gdb_byte *search_buf;
2663 unsigned search_buf_size;
2664 struct cleanup *old_cleanups;
2666 search_buf_size = chunk_size + pattern_len - 1;
2668 /* No point in trying to allocate a buffer larger than the search space. */
2669 if (search_space_len < search_buf_size)
2670 search_buf_size = search_space_len;
2672 search_buf = malloc (search_buf_size);
2673 if (search_buf == NULL)
2674 error (_("Unable to allocate memory to perform the search."));
2675 old_cleanups = make_cleanup (free_current_contents, &search_buf);
2677 /* Prime the search buffer. */
2679 if (target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2680 search_buf, start_addr, search_buf_size) != search_buf_size)
2682 warning (_("Unable to access %s bytes of target "
2683 "memory at %s, halting search."),
2684 pulongest (search_buf_size), hex_string (start_addr));
2685 do_cleanups (old_cleanups);
2689 /* Perform the search.
2691 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2692 When we've scanned N bytes we copy the trailing bytes to the start and
2693 read in another N bytes. */
2695 while (search_space_len >= pattern_len)
2697 gdb_byte *found_ptr;
2698 unsigned nr_search_bytes = min (search_space_len, search_buf_size);
2700 found_ptr = memmem (search_buf, nr_search_bytes,
2701 pattern, pattern_len);
2703 if (found_ptr != NULL)
2705 CORE_ADDR found_addr = start_addr + (found_ptr - search_buf);
2707 *found_addrp = found_addr;
2708 do_cleanups (old_cleanups);
2712 /* Not found in this chunk, skip to next chunk. */
2714 /* Don't let search_space_len wrap here, it's unsigned. */
2715 if (search_space_len >= chunk_size)
2716 search_space_len -= chunk_size;
2718 search_space_len = 0;
2720 if (search_space_len >= pattern_len)
2722 unsigned keep_len = search_buf_size - chunk_size;
2723 CORE_ADDR read_addr = start_addr + chunk_size + keep_len;
2726 /* Copy the trailing part of the previous iteration to the front
2727 of the buffer for the next iteration. */
2728 gdb_assert (keep_len == pattern_len - 1);
2729 memcpy (search_buf, search_buf + chunk_size, keep_len);
2731 nr_to_read = min (search_space_len - keep_len, chunk_size);
2733 if (target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2734 search_buf + keep_len, read_addr,
2735 nr_to_read) != nr_to_read)
2737 warning (_("Unable to access %s bytes of target "
2738 "memory at %s, halting search."),
2739 plongest (nr_to_read),
2740 hex_string (read_addr));
2741 do_cleanups (old_cleanups);
2745 start_addr += chunk_size;
2751 do_cleanups (old_cleanups);
2755 /* Default implementation of memory-searching. */
2758 default_search_memory (struct target_ops *self,
2759 CORE_ADDR start_addr, ULONGEST search_space_len,
2760 const gdb_byte *pattern, ULONGEST pattern_len,
2761 CORE_ADDR *found_addrp)
2763 /* Start over from the top of the target stack. */
2764 return simple_search_memory (current_target.beneath,
2765 start_addr, search_space_len,
2766 pattern, pattern_len, found_addrp);
2769 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2770 sequence of bytes in PATTERN with length PATTERN_LEN.
2772 The result is 1 if found, 0 if not found, and -1 if there was an error
2773 requiring halting of the search (e.g. memory read error).
2774 If the pattern is found the address is recorded in FOUND_ADDRP. */
2777 target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len,
2778 const gdb_byte *pattern, ULONGEST pattern_len,
2779 CORE_ADDR *found_addrp)
2784 fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n",
2785 hex_string (start_addr));
2787 found = current_target.to_search_memory (¤t_target, start_addr,
2789 pattern, pattern_len, found_addrp);
2792 fprintf_unfiltered (gdb_stdlog, " = %d\n", found);
2797 /* Look through the currently pushed targets. If none of them will
2798 be able to restart the currently running process, issue an error
2802 target_require_runnable (void)
2804 struct target_ops *t;
2806 for (t = target_stack; t != NULL; t = t->beneath)
2808 /* If this target knows how to create a new program, then
2809 assume we will still be able to after killing the current
2810 one. Either killing and mourning will not pop T, or else
2811 find_default_run_target will find it again. */
2812 if (t->to_create_inferior != NULL)
2815 /* Do not worry about thread_stratum targets that can not
2816 create inferiors. Assume they will be pushed again if
2817 necessary, and continue to the process_stratum. */
2818 if (t->to_stratum == thread_stratum
2819 || t->to_stratum == arch_stratum)
2822 error (_("The \"%s\" target does not support \"run\". "
2823 "Try \"help target\" or \"continue\"."),
2827 /* This function is only called if the target is running. In that
2828 case there should have been a process_stratum target and it
2829 should either know how to create inferiors, or not... */
2830 internal_error (__FILE__, __LINE__, _("No targets found"));
2833 /* Look through the list of possible targets for a target that can
2834 execute a run or attach command without any other data. This is
2835 used to locate the default process stratum.
2837 If DO_MESG is not NULL, the result is always valid (error() is
2838 called for errors); else, return NULL on error. */
2840 static struct target_ops *
2841 find_default_run_target (char *do_mesg)
2843 struct target_ops **t;
2844 struct target_ops *runable = NULL;
2849 for (t = target_structs; t < target_structs + target_struct_size;
2852 if ((*t)->to_can_run != delegate_can_run && target_can_run (*t))
2862 error (_("Don't know how to %s. Try \"help target\"."), do_mesg);
2871 find_default_attach (struct target_ops *ops, char *args, int from_tty)
2873 struct target_ops *t;
2875 t = find_default_run_target ("attach");
2876 (t->to_attach) (t, args, from_tty);
2881 find_default_create_inferior (struct target_ops *ops,
2882 char *exec_file, char *allargs, char **env,
2885 struct target_ops *t;
2887 t = find_default_run_target ("run");
2888 (t->to_create_inferior) (t, exec_file, allargs, env, from_tty);
2893 find_default_can_async_p (struct target_ops *ignore)
2895 struct target_ops *t;
2897 /* This may be called before the target is pushed on the stack;
2898 look for the default process stratum. If there's none, gdb isn't
2899 configured with a native debugger, and target remote isn't
2901 t = find_default_run_target (NULL);
2902 if (t && t->to_can_async_p != delegate_can_async_p)
2903 return (t->to_can_async_p) (t);
2908 find_default_is_async_p (struct target_ops *ignore)
2910 struct target_ops *t;
2912 /* This may be called before the target is pushed on the stack;
2913 look for the default process stratum. If there's none, gdb isn't
2914 configured with a native debugger, and target remote isn't
2916 t = find_default_run_target (NULL);
2917 if (t && t->to_is_async_p != delegate_is_async_p)
2918 return (t->to_is_async_p) (t);
2923 find_default_supports_non_stop (struct target_ops *self)
2925 struct target_ops *t;
2927 t = find_default_run_target (NULL);
2928 if (t && t->to_supports_non_stop)
2929 return (t->to_supports_non_stop) (t);
2934 target_supports_non_stop (void)
2936 struct target_ops *t;
2938 for (t = ¤t_target; t != NULL; t = t->beneath)
2939 if (t->to_supports_non_stop)
2940 return t->to_supports_non_stop (t);
2945 /* Implement the "info proc" command. */
2948 target_info_proc (char *args, enum info_proc_what what)
2950 struct target_ops *t;
2952 /* If we're already connected to something that can get us OS
2953 related data, use it. Otherwise, try using the native
2955 if (current_target.to_stratum >= process_stratum)
2956 t = current_target.beneath;
2958 t = find_default_run_target (NULL);
2960 for (; t != NULL; t = t->beneath)
2962 if (t->to_info_proc != NULL)
2964 t->to_info_proc (t, args, what);
2967 fprintf_unfiltered (gdb_stdlog,
2968 "target_info_proc (\"%s\", %d)\n", args, what);
2978 find_default_supports_disable_randomization (struct target_ops *self)
2980 struct target_ops *t;
2982 t = find_default_run_target (NULL);
2983 if (t && t->to_supports_disable_randomization)
2984 return (t->to_supports_disable_randomization) (t);
2989 target_supports_disable_randomization (void)
2991 struct target_ops *t;
2993 for (t = ¤t_target; t != NULL; t = t->beneath)
2994 if (t->to_supports_disable_randomization)
2995 return t->to_supports_disable_randomization (t);
3001 target_get_osdata (const char *type)
3003 struct target_ops *t;
3005 /* If we're already connected to something that can get us OS
3006 related data, use it. Otherwise, try using the native
3008 if (current_target.to_stratum >= process_stratum)
3009 t = current_target.beneath;
3011 t = find_default_run_target ("get OS data");
3016 return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type);
3019 /* Determine the current address space of thread PTID. */
3021 struct address_space *
3022 target_thread_address_space (ptid_t ptid)
3024 struct address_space *aspace;
3025 struct inferior *inf;
3026 struct target_ops *t;
3028 for (t = current_target.beneath; t != NULL; t = t->beneath)
3030 if (t->to_thread_address_space != NULL)
3032 aspace = t->to_thread_address_space (t, ptid);
3033 gdb_assert (aspace);
3036 fprintf_unfiltered (gdb_stdlog,
3037 "target_thread_address_space (%s) = %d\n",
3038 target_pid_to_str (ptid),
3039 address_space_num (aspace));
3044 /* Fall-back to the "main" address space of the inferior. */
3045 inf = find_inferior_pid (ptid_get_pid (ptid));
3047 if (inf == NULL || inf->aspace == NULL)
3048 internal_error (__FILE__, __LINE__,
3049 _("Can't determine the current "
3050 "address space of thread %s\n"),
3051 target_pid_to_str (ptid));
3057 /* Target file operations. */
3059 static struct target_ops *
3060 default_fileio_target (void)
3062 /* If we're already connected to something that can perform
3063 file I/O, use it. Otherwise, try using the native target. */
3064 if (current_target.to_stratum >= process_stratum)
3065 return current_target.beneath;
3067 return find_default_run_target ("file I/O");
3070 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3071 target file descriptor, or -1 if an error occurs (and set
3074 target_fileio_open (const char *filename, int flags, int mode,
3077 struct target_ops *t;
3079 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3081 if (t->to_fileio_open != NULL)
3083 int fd = t->to_fileio_open (t, filename, flags, mode, target_errno);
3086 fprintf_unfiltered (gdb_stdlog,
3087 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3088 filename, flags, mode,
3089 fd, fd != -1 ? 0 : *target_errno);
3094 *target_errno = FILEIO_ENOSYS;
3098 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3099 Return the number of bytes written, or -1 if an error occurs
3100 (and set *TARGET_ERRNO). */
3102 target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len,
3103 ULONGEST offset, int *target_errno)
3105 struct target_ops *t;
3107 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3109 if (t->to_fileio_pwrite != NULL)
3111 int ret = t->to_fileio_pwrite (t, fd, write_buf, len, offset,
3115 fprintf_unfiltered (gdb_stdlog,
3116 "target_fileio_pwrite (%d,...,%d,%s) "
3118 fd, len, pulongest (offset),
3119 ret, ret != -1 ? 0 : *target_errno);
3124 *target_errno = FILEIO_ENOSYS;
3128 /* Read up to LEN bytes FD on the target into READ_BUF.
3129 Return the number of bytes read, or -1 if an error occurs
3130 (and set *TARGET_ERRNO). */
3132 target_fileio_pread (int fd, gdb_byte *read_buf, int len,
3133 ULONGEST offset, int *target_errno)
3135 struct target_ops *t;
3137 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3139 if (t->to_fileio_pread != NULL)
3141 int ret = t->to_fileio_pread (t, fd, read_buf, len, offset,
3145 fprintf_unfiltered (gdb_stdlog,
3146 "target_fileio_pread (%d,...,%d,%s) "
3148 fd, len, pulongest (offset),
3149 ret, ret != -1 ? 0 : *target_errno);
3154 *target_errno = FILEIO_ENOSYS;
3158 /* Close FD on the target. Return 0, or -1 if an error occurs
3159 (and set *TARGET_ERRNO). */
3161 target_fileio_close (int fd, int *target_errno)
3163 struct target_ops *t;
3165 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3167 if (t->to_fileio_close != NULL)
3169 int ret = t->to_fileio_close (t, fd, target_errno);
3172 fprintf_unfiltered (gdb_stdlog,
3173 "target_fileio_close (%d) = %d (%d)\n",
3174 fd, ret, ret != -1 ? 0 : *target_errno);
3179 *target_errno = FILEIO_ENOSYS;
3183 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3184 occurs (and set *TARGET_ERRNO). */
3186 target_fileio_unlink (const char *filename, int *target_errno)
3188 struct target_ops *t;
3190 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3192 if (t->to_fileio_unlink != NULL)
3194 int ret = t->to_fileio_unlink (t, filename, target_errno);
3197 fprintf_unfiltered (gdb_stdlog,
3198 "target_fileio_unlink (%s) = %d (%d)\n",
3199 filename, ret, ret != -1 ? 0 : *target_errno);
3204 *target_errno = FILEIO_ENOSYS;
3208 /* Read value of symbolic link FILENAME on the target. Return a
3209 null-terminated string allocated via xmalloc, or NULL if an error
3210 occurs (and set *TARGET_ERRNO). */
3212 target_fileio_readlink (const char *filename, int *target_errno)
3214 struct target_ops *t;
3216 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3218 if (t->to_fileio_readlink != NULL)
3220 char *ret = t->to_fileio_readlink (t, filename, target_errno);
3223 fprintf_unfiltered (gdb_stdlog,
3224 "target_fileio_readlink (%s) = %s (%d)\n",
3225 filename, ret? ret : "(nil)",
3226 ret? 0 : *target_errno);
3231 *target_errno = FILEIO_ENOSYS;
3236 target_fileio_close_cleanup (void *opaque)
3238 int fd = *(int *) opaque;
3241 target_fileio_close (fd, &target_errno);
3244 /* Read target file FILENAME. Store the result in *BUF_P and
3245 return the size of the transferred data. PADDING additional bytes are
3246 available in *BUF_P. This is a helper function for
3247 target_fileio_read_alloc; see the declaration of that function for more
3251 target_fileio_read_alloc_1 (const char *filename,
3252 gdb_byte **buf_p, int padding)
3254 struct cleanup *close_cleanup;
3255 size_t buf_alloc, buf_pos;
3261 fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno);
3265 close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd);
3267 /* Start by reading up to 4K at a time. The target will throttle
3268 this number down if necessary. */
3270 buf = xmalloc (buf_alloc);
3274 n = target_fileio_pread (fd, &buf[buf_pos],
3275 buf_alloc - buf_pos - padding, buf_pos,
3279 /* An error occurred. */
3280 do_cleanups (close_cleanup);
3286 /* Read all there was. */
3287 do_cleanups (close_cleanup);
3297 /* If the buffer is filling up, expand it. */
3298 if (buf_alloc < buf_pos * 2)
3301 buf = xrealloc (buf, buf_alloc);
3308 /* Read target file FILENAME. Store the result in *BUF_P and return
3309 the size of the transferred data. See the declaration in "target.h"
3310 function for more information about the return value. */
3313 target_fileio_read_alloc (const char *filename, gdb_byte **buf_p)
3315 return target_fileio_read_alloc_1 (filename, buf_p, 0);
3318 /* Read target file FILENAME. The result is NUL-terminated and
3319 returned as a string, allocated using xmalloc. If an error occurs
3320 or the transfer is unsupported, NULL is returned. Empty objects
3321 are returned as allocated but empty strings. A warning is issued
3322 if the result contains any embedded NUL bytes. */
3325 target_fileio_read_stralloc (const char *filename)
3329 LONGEST i, transferred;
3331 transferred = target_fileio_read_alloc_1 (filename, &buffer, 1);
3332 bufstr = (char *) buffer;
3334 if (transferred < 0)
3337 if (transferred == 0)
3338 return xstrdup ("");
3340 bufstr[transferred] = 0;
3342 /* Check for embedded NUL bytes; but allow trailing NULs. */
3343 for (i = strlen (bufstr); i < transferred; i++)
3346 warning (_("target file %s "
3347 "contained unexpected null characters"),
3357 default_region_ok_for_hw_watchpoint (struct target_ops *self,
3358 CORE_ADDR addr, int len)
3360 return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT);
3364 default_watchpoint_addr_within_range (struct target_ops *target,
3366 CORE_ADDR start, int length)
3368 return addr >= start && addr < start + length;
3371 static struct gdbarch *
3372 default_thread_architecture (struct target_ops *ops, ptid_t ptid)
3374 return target_gdbarch ();
3384 * Find the next target down the stack from the specified target.
3388 find_target_beneath (struct target_ops *t)
3396 find_target_at (enum strata stratum)
3398 struct target_ops *t;
3400 for (t = current_target.beneath; t != NULL; t = t->beneath)
3401 if (t->to_stratum == stratum)
3408 /* The inferior process has died. Long live the inferior! */
3411 generic_mourn_inferior (void)
3415 ptid = inferior_ptid;
3416 inferior_ptid = null_ptid;
3418 /* Mark breakpoints uninserted in case something tries to delete a
3419 breakpoint while we delete the inferior's threads (which would
3420 fail, since the inferior is long gone). */
3421 mark_breakpoints_out ();
3423 if (!ptid_equal (ptid, null_ptid))
3425 int pid = ptid_get_pid (ptid);
3426 exit_inferior (pid);
3429 /* Note this wipes step-resume breakpoints, so needs to be done
3430 after exit_inferior, which ends up referencing the step-resume
3431 breakpoints through clear_thread_inferior_resources. */
3432 breakpoint_init_inferior (inf_exited);
3434 registers_changed ();
3436 reopen_exec_file ();
3437 reinit_frame_cache ();
3439 if (deprecated_detach_hook)
3440 deprecated_detach_hook ();
3443 /* Convert a normal process ID to a string. Returns the string in a
3447 normal_pid_to_str (ptid_t ptid)
3449 static char buf[32];
3451 xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid));
3456 default_pid_to_str (struct target_ops *ops, ptid_t ptid)
3458 return normal_pid_to_str (ptid);
3461 /* Error-catcher for target_find_memory_regions. */
3463 dummy_find_memory_regions (struct target_ops *self,
3464 find_memory_region_ftype ignore1, void *ignore2)
3466 error (_("Command not implemented for this target."));
3470 /* Error-catcher for target_make_corefile_notes. */
3472 dummy_make_corefile_notes (struct target_ops *self,
3473 bfd *ignore1, int *ignore2)
3475 error (_("Command not implemented for this target."));
3479 /* Set up the handful of non-empty slots needed by the dummy target
3483 init_dummy_target (void)
3485 dummy_target.to_shortname = "None";
3486 dummy_target.to_longname = "None";
3487 dummy_target.to_doc = "";
3488 dummy_target.to_create_inferior = find_default_create_inferior;
3489 dummy_target.to_supports_non_stop = find_default_supports_non_stop;
3490 dummy_target.to_supports_disable_randomization
3491 = find_default_supports_disable_randomization;
3492 dummy_target.to_stratum = dummy_stratum;
3493 dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero;
3494 dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero;
3495 dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero;
3496 dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero;
3497 dummy_target.to_has_execution
3498 = (int (*) (struct target_ops *, ptid_t)) return_zero;
3499 dummy_target.to_magic = OPS_MAGIC;
3501 install_dummy_methods (&dummy_target);
3505 debug_to_open (char *args, int from_tty)
3507 debug_target.to_open (args, from_tty);
3509 fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty);
3513 target_close (struct target_ops *targ)
3515 gdb_assert (!target_is_pushed (targ));
3517 if (targ->to_xclose != NULL)
3518 targ->to_xclose (targ);
3519 else if (targ->to_close != NULL)
3520 targ->to_close (targ);
3523 fprintf_unfiltered (gdb_stdlog, "target_close ()\n");
3527 target_attach (char *args, int from_tty)
3529 current_target.to_attach (¤t_target, args, from_tty);
3531 fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n",
3536 target_thread_alive (ptid_t ptid)
3540 retval = current_target.to_thread_alive (¤t_target, ptid);
3542 fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n",
3543 ptid_get_pid (ptid), retval);
3549 target_find_new_threads (void)
3551 current_target.to_find_new_threads (¤t_target);
3553 fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n");
3557 target_stop (ptid_t ptid)
3561 warning (_("May not interrupt or stop the target, ignoring attempt"));
3565 (*current_target.to_stop) (¤t_target, ptid);
3569 debug_to_post_attach (struct target_ops *self, int pid)
3571 debug_target.to_post_attach (&debug_target, pid);
3573 fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid);
3576 /* Concatenate ELEM to LIST, a comma separate list, and return the
3577 result. The LIST incoming argument is released. */
3580 str_comma_list_concat_elem (char *list, const char *elem)
3583 return xstrdup (elem);
3585 return reconcat (list, list, ", ", elem, (char *) NULL);
3588 /* Helper for target_options_to_string. If OPT is present in
3589 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3590 Returns the new resulting string. OPT is removed from
3594 do_option (int *target_options, char *ret,
3595 int opt, char *opt_str)
3597 if ((*target_options & opt) != 0)
3599 ret = str_comma_list_concat_elem (ret, opt_str);
3600 *target_options &= ~opt;
3607 target_options_to_string (int target_options)
3611 #define DO_TARG_OPTION(OPT) \
3612 ret = do_option (&target_options, ret, OPT, #OPT)
3614 DO_TARG_OPTION (TARGET_WNOHANG);
3616 if (target_options != 0)
3617 ret = str_comma_list_concat_elem (ret, "unknown???");
3625 debug_print_register (const char * func,
3626 struct regcache *regcache, int regno)
3628 struct gdbarch *gdbarch = get_regcache_arch (regcache);
3630 fprintf_unfiltered (gdb_stdlog, "%s ", func);
3631 if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)
3632 && gdbarch_register_name (gdbarch, regno) != NULL
3633 && gdbarch_register_name (gdbarch, regno)[0] != '\0')
3634 fprintf_unfiltered (gdb_stdlog, "(%s)",
3635 gdbarch_register_name (gdbarch, regno));
3637 fprintf_unfiltered (gdb_stdlog, "(%d)", regno);
3638 if (regno >= 0 && regno < gdbarch_num_regs (gdbarch))
3640 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
3641 int i, size = register_size (gdbarch, regno);
3642 gdb_byte buf[MAX_REGISTER_SIZE];
3644 regcache_raw_collect (regcache, regno, buf);
3645 fprintf_unfiltered (gdb_stdlog, " = ");
3646 for (i = 0; i < size; i++)
3648 fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]);
3650 if (size <= sizeof (LONGEST))
3652 ULONGEST val = extract_unsigned_integer (buf, size, byte_order);
3654 fprintf_unfiltered (gdb_stdlog, " %s %s",
3655 core_addr_to_string_nz (val), plongest (val));
3658 fprintf_unfiltered (gdb_stdlog, "\n");
3662 target_fetch_registers (struct regcache *regcache, int regno)
3664 current_target.to_fetch_registers (¤t_target, regcache, regno);
3666 debug_print_register ("target_fetch_registers", regcache, regno);
3670 target_store_registers (struct regcache *regcache, int regno)
3672 struct target_ops *t;
3674 if (!may_write_registers)
3675 error (_("Writing to registers is not allowed (regno %d)"), regno);
3677 current_target.to_store_registers (¤t_target, regcache, regno);
3680 debug_print_register ("target_store_registers", regcache, regno);
3685 target_core_of_thread (ptid_t ptid)
3687 int retval = current_target.to_core_of_thread (¤t_target, ptid);
3690 fprintf_unfiltered (gdb_stdlog,
3691 "target_core_of_thread (%d) = %d\n",
3692 ptid_get_pid (ptid), retval);
3697 target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size)
3699 int retval = current_target.to_verify_memory (¤t_target,
3700 data, memaddr, size);
3703 fprintf_unfiltered (gdb_stdlog,
3704 "target_verify_memory (%s, %s) = %d\n",
3705 paddress (target_gdbarch (), memaddr),
3711 /* The documentation for this function is in its prototype declaration in
3715 target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw)
3719 ret = current_target.to_insert_mask_watchpoint (¤t_target,
3723 fprintf_unfiltered (gdb_stdlog, "\
3724 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3725 core_addr_to_string (addr),
3726 core_addr_to_string (mask), rw, ret);
3731 /* The documentation for this function is in its prototype declaration in
3735 target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw)
3739 ret = current_target.to_remove_mask_watchpoint (¤t_target,
3743 fprintf_unfiltered (gdb_stdlog, "\
3744 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3745 core_addr_to_string (addr),
3746 core_addr_to_string (mask), rw, ret);
3751 /* The documentation for this function is in its prototype declaration
3755 target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask)
3757 return current_target.to_masked_watch_num_registers (¤t_target,
3761 /* The documentation for this function is in its prototype declaration
3765 target_ranged_break_num_registers (void)
3767 return current_target.to_ranged_break_num_registers (¤t_target);
3772 struct btrace_target_info *
3773 target_enable_btrace (ptid_t ptid)
3775 return current_target.to_enable_btrace (¤t_target, ptid);
3781 target_disable_btrace (struct btrace_target_info *btinfo)
3783 current_target.to_disable_btrace (¤t_target, btinfo);
3789 target_teardown_btrace (struct btrace_target_info *btinfo)
3791 current_target.to_teardown_btrace (¤t_target, btinfo);
3797 target_read_btrace (VEC (btrace_block_s) **btrace,
3798 struct btrace_target_info *btinfo,
3799 enum btrace_read_type type)
3801 return current_target.to_read_btrace (¤t_target, btrace, btinfo, type);
3807 target_stop_recording (void)
3809 current_target.to_stop_recording (¤t_target);
3815 target_info_record (void)
3817 struct target_ops *t;
3819 for (t = current_target.beneath; t != NULL; t = t->beneath)
3820 if (t->to_info_record != NULL)
3822 t->to_info_record (t);
3832 target_save_record (const char *filename)
3834 current_target.to_save_record (¤t_target, filename);
3840 target_supports_delete_record (void)
3842 struct target_ops *t;
3844 for (t = current_target.beneath; t != NULL; t = t->beneath)
3845 if (t->to_delete_record != NULL)
3854 target_delete_record (void)
3856 current_target.to_delete_record (¤t_target);
3862 target_record_is_replaying (void)
3864 return current_target.to_record_is_replaying (¤t_target);
3870 target_goto_record_begin (void)
3872 current_target.to_goto_record_begin (¤t_target);
3878 target_goto_record_end (void)
3880 current_target.to_goto_record_end (¤t_target);
3886 target_goto_record (ULONGEST insn)
3888 current_target.to_goto_record (¤t_target, insn);
3894 target_insn_history (int size, int flags)
3896 current_target.to_insn_history (¤t_target, size, flags);
3902 target_insn_history_from (ULONGEST from, int size, int flags)
3904 current_target.to_insn_history_from (¤t_target, from, size, flags);
3910 target_insn_history_range (ULONGEST begin, ULONGEST end, int flags)
3912 current_target.to_insn_history_range (¤t_target, begin, end, flags);
3918 target_call_history (int size, int flags)
3920 current_target.to_call_history (¤t_target, size, flags);
3926 target_call_history_from (ULONGEST begin, int size, int flags)
3928 current_target.to_call_history_from (¤t_target, begin, size, flags);
3934 target_call_history_range (ULONGEST begin, ULONGEST end, int flags)
3936 current_target.to_call_history_range (¤t_target, begin, end, flags);
3940 debug_to_prepare_to_store (struct target_ops *self, struct regcache *regcache)
3942 debug_target.to_prepare_to_store (&debug_target, regcache);
3944 fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n");
3949 const struct frame_unwind *
3950 target_get_unwinder (void)
3952 struct target_ops *t;
3954 for (t = current_target.beneath; t != NULL; t = t->beneath)
3955 if (t->to_get_unwinder != NULL)
3956 return t->to_get_unwinder;
3963 const struct frame_unwind *
3964 target_get_tailcall_unwinder (void)
3966 struct target_ops *t;
3968 for (t = current_target.beneath; t != NULL; t = t->beneath)
3969 if (t->to_get_tailcall_unwinder != NULL)
3970 return t->to_get_tailcall_unwinder;
3978 forward_target_decr_pc_after_break (struct target_ops *ops,
3979 struct gdbarch *gdbarch)
3981 for (; ops != NULL; ops = ops->beneath)
3982 if (ops->to_decr_pc_after_break != NULL)
3983 return ops->to_decr_pc_after_break (ops, gdbarch);
3985 return gdbarch_decr_pc_after_break (gdbarch);
3991 target_decr_pc_after_break (struct gdbarch *gdbarch)
3993 return forward_target_decr_pc_after_break (current_target.beneath, gdbarch);
3997 deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len,
3998 int write, struct mem_attrib *attrib,
3999 struct target_ops *target)
4003 retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write,
4006 fprintf_unfiltered (gdb_stdlog,
4007 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4008 paddress (target_gdbarch (), memaddr), len,
4009 write ? "write" : "read", retval);
4015 fputs_unfiltered (", bytes =", gdb_stdlog);
4016 for (i = 0; i < retval; i++)
4018 if ((((intptr_t) &(myaddr[i])) & 0xf) == 0)
4020 if (targetdebug < 2 && i > 0)
4022 fprintf_unfiltered (gdb_stdlog, " ...");
4025 fprintf_unfiltered (gdb_stdlog, "\n");
4028 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
4032 fputc_unfiltered ('\n', gdb_stdlog);
4038 debug_to_files_info (struct target_ops *target)
4040 debug_target.to_files_info (target);
4042 fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n");
4046 debug_to_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch,
4047 struct bp_target_info *bp_tgt)
4051 retval = debug_target.to_insert_breakpoint (&debug_target, gdbarch, bp_tgt);
4053 fprintf_unfiltered (gdb_stdlog,
4054 "target_insert_breakpoint (%s, xxx) = %ld\n",
4055 core_addr_to_string (bp_tgt->placed_address),
4056 (unsigned long) retval);
4061 debug_to_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch,
4062 struct bp_target_info *bp_tgt)
4066 retval = debug_target.to_remove_breakpoint (&debug_target, gdbarch, bp_tgt);
4068 fprintf_unfiltered (gdb_stdlog,
4069 "target_remove_breakpoint (%s, xxx) = %ld\n",
4070 core_addr_to_string (bp_tgt->placed_address),
4071 (unsigned long) retval);
4076 debug_to_can_use_hw_breakpoint (struct target_ops *self,
4077 int type, int cnt, int from_tty)
4081 retval = debug_target.to_can_use_hw_breakpoint (&debug_target,
4082 type, cnt, from_tty);
4084 fprintf_unfiltered (gdb_stdlog,
4085 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4086 (unsigned long) type,
4087 (unsigned long) cnt,
4088 (unsigned long) from_tty,
4089 (unsigned long) retval);
4094 debug_to_region_ok_for_hw_watchpoint (struct target_ops *self,
4095 CORE_ADDR addr, int len)
4099 retval = debug_target.to_region_ok_for_hw_watchpoint (&debug_target,
4102 fprintf_unfiltered (gdb_stdlog,
4103 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4104 core_addr_to_string (addr), (unsigned long) len,
4105 core_addr_to_string (retval));
4110 debug_to_can_accel_watchpoint_condition (struct target_ops *self,
4111 CORE_ADDR addr, int len, int rw,
4112 struct expression *cond)
4116 retval = debug_target.to_can_accel_watchpoint_condition (&debug_target,
4120 fprintf_unfiltered (gdb_stdlog,
4121 "target_can_accel_watchpoint_condition "
4122 "(%s, %d, %d, %s) = %ld\n",
4123 core_addr_to_string (addr), len, rw,
4124 host_address_to_string (cond), (unsigned long) retval);
4129 debug_to_stopped_by_watchpoint (struct target_ops *ops)
4133 retval = debug_target.to_stopped_by_watchpoint (&debug_target);
4135 fprintf_unfiltered (gdb_stdlog,
4136 "target_stopped_by_watchpoint () = %ld\n",
4137 (unsigned long) retval);
4142 debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr)
4146 retval = debug_target.to_stopped_data_address (target, addr);
4148 fprintf_unfiltered (gdb_stdlog,
4149 "target_stopped_data_address ([%s]) = %ld\n",
4150 core_addr_to_string (*addr),
4151 (unsigned long)retval);
4156 debug_to_watchpoint_addr_within_range (struct target_ops *target,
4158 CORE_ADDR start, int length)
4162 retval = debug_target.to_watchpoint_addr_within_range (target, addr,
4165 fprintf_filtered (gdb_stdlog,
4166 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4167 core_addr_to_string (addr), core_addr_to_string (start),
4173 debug_to_insert_hw_breakpoint (struct target_ops *self,
4174 struct gdbarch *gdbarch,
4175 struct bp_target_info *bp_tgt)
4179 retval = debug_target.to_insert_hw_breakpoint (&debug_target,
4182 fprintf_unfiltered (gdb_stdlog,
4183 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4184 core_addr_to_string (bp_tgt->placed_address),
4185 (unsigned long) retval);
4190 debug_to_remove_hw_breakpoint (struct target_ops *self,
4191 struct gdbarch *gdbarch,
4192 struct bp_target_info *bp_tgt)
4196 retval = debug_target.to_remove_hw_breakpoint (&debug_target,
4199 fprintf_unfiltered (gdb_stdlog,
4200 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4201 core_addr_to_string (bp_tgt->placed_address),
4202 (unsigned long) retval);
4207 debug_to_insert_watchpoint (struct target_ops *self,
4208 CORE_ADDR addr, int len, int type,
4209 struct expression *cond)
4213 retval = debug_target.to_insert_watchpoint (&debug_target,
4214 addr, len, type, cond);
4216 fprintf_unfiltered (gdb_stdlog,
4217 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4218 core_addr_to_string (addr), len, type,
4219 host_address_to_string (cond), (unsigned long) retval);
4224 debug_to_remove_watchpoint (struct target_ops *self,
4225 CORE_ADDR addr, int len, int type,
4226 struct expression *cond)
4230 retval = debug_target.to_remove_watchpoint (&debug_target,
4231 addr, len, type, cond);
4233 fprintf_unfiltered (gdb_stdlog,
4234 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4235 core_addr_to_string (addr), len, type,
4236 host_address_to_string (cond), (unsigned long) retval);
4241 debug_to_terminal_init (struct target_ops *self)
4243 debug_target.to_terminal_init (&debug_target);
4245 fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n");
4249 debug_to_terminal_inferior (struct target_ops *self)
4251 debug_target.to_terminal_inferior (&debug_target);
4253 fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n");
4257 debug_to_terminal_ours_for_output (struct target_ops *self)
4259 debug_target.to_terminal_ours_for_output (&debug_target);
4261 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n");
4265 debug_to_terminal_ours (struct target_ops *self)
4267 debug_target.to_terminal_ours (&debug_target);
4269 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n");
4273 debug_to_terminal_save_ours (struct target_ops *self)
4275 debug_target.to_terminal_save_ours (&debug_target);
4277 fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n");
4281 debug_to_terminal_info (struct target_ops *self,
4282 const char *arg, int from_tty)
4284 debug_target.to_terminal_info (&debug_target, arg, from_tty);
4286 fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg,
4291 debug_to_load (struct target_ops *self, char *args, int from_tty)
4293 debug_target.to_load (&debug_target, args, from_tty);
4295 fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty);
4299 debug_to_post_startup_inferior (struct target_ops *self, ptid_t ptid)
4301 debug_target.to_post_startup_inferior (&debug_target, ptid);
4303 fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n",
4304 ptid_get_pid (ptid));
4308 debug_to_insert_fork_catchpoint (struct target_ops *self, int pid)
4312 retval = debug_target.to_insert_fork_catchpoint (&debug_target, pid);
4314 fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n",
4321 debug_to_remove_fork_catchpoint (struct target_ops *self, int pid)
4325 retval = debug_target.to_remove_fork_catchpoint (&debug_target, pid);
4327 fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n",
4334 debug_to_insert_vfork_catchpoint (struct target_ops *self, int pid)
4338 retval = debug_target.to_insert_vfork_catchpoint (&debug_target, pid);
4340 fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n",
4347 debug_to_remove_vfork_catchpoint (struct target_ops *self, int pid)
4351 retval = debug_target.to_remove_vfork_catchpoint (&debug_target, pid);
4353 fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n",
4360 debug_to_insert_exec_catchpoint (struct target_ops *self, int pid)
4364 retval = debug_target.to_insert_exec_catchpoint (&debug_target, pid);
4366 fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n",
4373 debug_to_remove_exec_catchpoint (struct target_ops *self, int pid)
4377 retval = debug_target.to_remove_exec_catchpoint (&debug_target, pid);
4379 fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n",
4386 debug_to_has_exited (struct target_ops *self,
4387 int pid, int wait_status, int *exit_status)
4391 has_exited = debug_target.to_has_exited (&debug_target,
4392 pid, wait_status, exit_status);
4394 fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n",
4395 pid, wait_status, *exit_status, has_exited);
4401 debug_to_can_run (struct target_ops *self)
4405 retval = debug_target.to_can_run (&debug_target);
4407 fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval);
4412 static struct gdbarch *
4413 debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid)
4415 struct gdbarch *retval;
4417 retval = debug_target.to_thread_architecture (ops, ptid);
4419 fprintf_unfiltered (gdb_stdlog,
4420 "target_thread_architecture (%s) = %s [%s]\n",
4421 target_pid_to_str (ptid),
4422 host_address_to_string (retval),
4423 gdbarch_bfd_arch_info (retval)->printable_name);
4428 debug_to_stop (struct target_ops *self, ptid_t ptid)
4430 debug_target.to_stop (&debug_target, ptid);
4432 fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n",
4433 target_pid_to_str (ptid));
4437 debug_to_rcmd (struct target_ops *self, char *command,
4438 struct ui_file *outbuf)
4440 debug_target.to_rcmd (&debug_target, command, outbuf);
4441 fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command);
4445 debug_to_pid_to_exec_file (struct target_ops *self, int pid)
4449 exec_file = debug_target.to_pid_to_exec_file (&debug_target, pid);
4451 fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n",
4458 setup_target_debug (void)
4460 memcpy (&debug_target, ¤t_target, sizeof debug_target);
4462 current_target.to_open = debug_to_open;
4463 current_target.to_post_attach = debug_to_post_attach;
4464 current_target.to_prepare_to_store = debug_to_prepare_to_store;
4465 current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory;
4466 current_target.to_files_info = debug_to_files_info;
4467 current_target.to_insert_breakpoint = debug_to_insert_breakpoint;
4468 current_target.to_remove_breakpoint = debug_to_remove_breakpoint;
4469 current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint;
4470 current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint;
4471 current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint;
4472 current_target.to_insert_watchpoint = debug_to_insert_watchpoint;
4473 current_target.to_remove_watchpoint = debug_to_remove_watchpoint;
4474 current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint;
4475 current_target.to_stopped_data_address = debug_to_stopped_data_address;
4476 current_target.to_watchpoint_addr_within_range
4477 = debug_to_watchpoint_addr_within_range;
4478 current_target.to_region_ok_for_hw_watchpoint
4479 = debug_to_region_ok_for_hw_watchpoint;
4480 current_target.to_can_accel_watchpoint_condition
4481 = debug_to_can_accel_watchpoint_condition;
4482 current_target.to_terminal_init = debug_to_terminal_init;
4483 current_target.to_terminal_inferior = debug_to_terminal_inferior;
4484 current_target.to_terminal_ours_for_output
4485 = debug_to_terminal_ours_for_output;
4486 current_target.to_terminal_ours = debug_to_terminal_ours;
4487 current_target.to_terminal_save_ours = debug_to_terminal_save_ours;
4488 current_target.to_terminal_info = debug_to_terminal_info;
4489 current_target.to_load = debug_to_load;
4490 current_target.to_post_startup_inferior = debug_to_post_startup_inferior;
4491 current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint;
4492 current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint;
4493 current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint;
4494 current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint;
4495 current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint;
4496 current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint;
4497 current_target.to_has_exited = debug_to_has_exited;
4498 current_target.to_can_run = debug_to_can_run;
4499 current_target.to_stop = debug_to_stop;
4500 current_target.to_rcmd = debug_to_rcmd;
4501 current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file;
4502 current_target.to_thread_architecture = debug_to_thread_architecture;
4506 static char targ_desc[] =
4507 "Names of targets and files being debugged.\nShows the entire \
4508 stack of targets currently in use (including the exec-file,\n\
4509 core-file, and process, if any), as well as the symbol file name.";
4512 default_rcmd (struct target_ops *self, char *command, struct ui_file *output)
4514 error (_("\"monitor\" command not supported by this target."));
4518 do_monitor_command (char *cmd,
4521 target_rcmd (cmd, gdb_stdtarg);
4524 /* Print the name of each layers of our target stack. */
4527 maintenance_print_target_stack (char *cmd, int from_tty)
4529 struct target_ops *t;
4531 printf_filtered (_("The current target stack is:\n"));
4533 for (t = target_stack; t != NULL; t = t->beneath)
4535 printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname);
4539 /* Controls if async mode is permitted. */
4540 int target_async_permitted = 0;
4542 /* The set command writes to this variable. If the inferior is
4543 executing, target_async_permitted is *not* updated. */
4544 static int target_async_permitted_1 = 0;
4547 set_target_async_command (char *args, int from_tty,
4548 struct cmd_list_element *c)
4550 if (have_live_inferiors ())
4552 target_async_permitted_1 = target_async_permitted;
4553 error (_("Cannot change this setting while the inferior is running."));
4556 target_async_permitted = target_async_permitted_1;
4560 show_target_async_command (struct ui_file *file, int from_tty,
4561 struct cmd_list_element *c,
4564 fprintf_filtered (file,
4565 _("Controlling the inferior in "
4566 "asynchronous mode is %s.\n"), value);
4569 /* Temporary copies of permission settings. */
4571 static int may_write_registers_1 = 1;
4572 static int may_write_memory_1 = 1;
4573 static int may_insert_breakpoints_1 = 1;
4574 static int may_insert_tracepoints_1 = 1;
4575 static int may_insert_fast_tracepoints_1 = 1;
4576 static int may_stop_1 = 1;
4578 /* Make the user-set values match the real values again. */
4581 update_target_permissions (void)
4583 may_write_registers_1 = may_write_registers;
4584 may_write_memory_1 = may_write_memory;
4585 may_insert_breakpoints_1 = may_insert_breakpoints;
4586 may_insert_tracepoints_1 = may_insert_tracepoints;
4587 may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints;
4588 may_stop_1 = may_stop;
4591 /* The one function handles (most of) the permission flags in the same
4595 set_target_permissions (char *args, int from_tty,
4596 struct cmd_list_element *c)
4598 if (target_has_execution)
4600 update_target_permissions ();
4601 error (_("Cannot change this setting while the inferior is running."));
4604 /* Make the real values match the user-changed values. */
4605 may_write_registers = may_write_registers_1;
4606 may_insert_breakpoints = may_insert_breakpoints_1;
4607 may_insert_tracepoints = may_insert_tracepoints_1;
4608 may_insert_fast_tracepoints = may_insert_fast_tracepoints_1;
4609 may_stop = may_stop_1;
4610 update_observer_mode ();
4613 /* Set memory write permission independently of observer mode. */
4616 set_write_memory_permission (char *args, int from_tty,
4617 struct cmd_list_element *c)
4619 /* Make the real values match the user-changed values. */
4620 may_write_memory = may_write_memory_1;
4621 update_observer_mode ();
4626 initialize_targets (void)
4628 init_dummy_target ();
4629 push_target (&dummy_target);
4631 add_info ("target", target_info, targ_desc);
4632 add_info ("files", target_info, targ_desc);
4634 add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\
4635 Set target debugging."), _("\
4636 Show target debugging."), _("\
4637 When non-zero, target debugging is enabled. Higher numbers are more\n\
4638 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4642 &setdebuglist, &showdebuglist);
4644 add_setshow_boolean_cmd ("trust-readonly-sections", class_support,
4645 &trust_readonly, _("\
4646 Set mode for reading from readonly sections."), _("\
4647 Show mode for reading from readonly sections."), _("\
4648 When this mode is on, memory reads from readonly sections (such as .text)\n\
4649 will be read from the object file instead of from the target. This will\n\
4650 result in significant performance improvement for remote targets."),
4652 show_trust_readonly,
4653 &setlist, &showlist);
4655 add_com ("monitor", class_obscure, do_monitor_command,
4656 _("Send a command to the remote monitor (remote targets only)."));
4658 add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack,
4659 _("Print the name of each layer of the internal target stack."),
4660 &maintenanceprintlist);
4662 add_setshow_boolean_cmd ("target-async", no_class,
4663 &target_async_permitted_1, _("\
4664 Set whether gdb controls the inferior in asynchronous mode."), _("\
4665 Show whether gdb controls the inferior in asynchronous mode."), _("\
4666 Tells gdb whether to control the inferior in asynchronous mode."),
4667 set_target_async_command,
4668 show_target_async_command,
4672 add_setshow_boolean_cmd ("may-write-registers", class_support,
4673 &may_write_registers_1, _("\
4674 Set permission to write into registers."), _("\
4675 Show permission to write into registers."), _("\
4676 When this permission is on, GDB may write into the target's registers.\n\
4677 Otherwise, any sort of write attempt will result in an error."),
4678 set_target_permissions, NULL,
4679 &setlist, &showlist);
4681 add_setshow_boolean_cmd ("may-write-memory", class_support,
4682 &may_write_memory_1, _("\
4683 Set permission to write into target memory."), _("\
4684 Show permission to write into target memory."), _("\
4685 When this permission is on, GDB may write into the target's memory.\n\
4686 Otherwise, any sort of write attempt will result in an error."),
4687 set_write_memory_permission, NULL,
4688 &setlist, &showlist);
4690 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support,
4691 &may_insert_breakpoints_1, _("\
4692 Set permission to insert breakpoints in the target."), _("\
4693 Show permission to insert breakpoints in the target."), _("\
4694 When this permission is on, GDB may insert breakpoints in the program.\n\
4695 Otherwise, any sort of insertion attempt will result in an error."),
4696 set_target_permissions, NULL,
4697 &setlist, &showlist);
4699 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support,
4700 &may_insert_tracepoints_1, _("\
4701 Set permission to insert tracepoints in the target."), _("\
4702 Show permission to insert tracepoints in the target."), _("\
4703 When this permission is on, GDB may insert tracepoints in the program.\n\
4704 Otherwise, any sort of insertion attempt will result in an error."),
4705 set_target_permissions, NULL,
4706 &setlist, &showlist);
4708 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support,
4709 &may_insert_fast_tracepoints_1, _("\
4710 Set permission to insert fast tracepoints in the target."), _("\
4711 Show permission to insert fast tracepoints in the target."), _("\
4712 When this permission is on, GDB may insert fast tracepoints.\n\
4713 Otherwise, any sort of insertion attempt will result in an error."),
4714 set_target_permissions, NULL,
4715 &setlist, &showlist);
4717 add_setshow_boolean_cmd ("may-interrupt", class_support,
4719 Set permission to interrupt or signal the target."), _("\
4720 Show permission to interrupt or signal the target."), _("\
4721 When this permission is on, GDB may interrupt/stop the target's execution.\n\
4722 Otherwise, any attempt to interrupt or stop will be ignored."),
4723 set_target_permissions, NULL,
4724 &setlist, &showlist);