1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2014 Free Software Foundation, Inc.
5 Contributed by Cygnus Support.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "target-dcache.h"
36 #include "gdb_assert.h"
38 #include "exceptions.h"
39 #include "target-descriptions.h"
40 #include "gdbthread.h"
43 #include "inline-frame.h"
44 #include "tracepoint.h"
45 #include "gdb/fileio.h"
48 static void target_info (char *, int);
50 static void default_terminal_info (struct target_ops *, const char *, int);
52 static int default_watchpoint_addr_within_range (struct target_ops *,
53 CORE_ADDR, CORE_ADDR, int);
55 static int default_region_ok_for_hw_watchpoint (struct target_ops *,
58 static void default_rcmd (struct target_ops *, char *, struct ui_file *);
60 static ptid_t default_get_ada_task_ptid (struct target_ops *self,
63 static void tcomplain (void) ATTRIBUTE_NORETURN;
65 static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *);
67 static int return_zero (void);
69 static void *return_null (void);
71 void target_ignore (void);
73 static void target_command (char *, int);
75 static struct target_ops *find_default_run_target (char *);
77 static target_xfer_partial_ftype default_xfer_partial;
79 static struct gdbarch *default_thread_architecture (struct target_ops *ops,
82 static int dummy_find_memory_regions (struct target_ops *self,
83 find_memory_region_ftype ignore1,
86 static char *dummy_make_corefile_notes (struct target_ops *self,
87 bfd *ignore1, int *ignore2);
89 static int find_default_can_async_p (struct target_ops *ignore);
91 static int find_default_is_async_p (struct target_ops *ignore);
93 static enum exec_direction_kind default_execution_direction
94 (struct target_ops *self);
96 #include "target-delegates.c"
98 static void init_dummy_target (void);
100 static struct target_ops debug_target;
102 static void debug_to_open (char *, int);
104 static void debug_to_prepare_to_store (struct target_ops *self,
107 static void debug_to_files_info (struct target_ops *);
109 static int debug_to_insert_breakpoint (struct target_ops *, struct gdbarch *,
110 struct bp_target_info *);
112 static int debug_to_remove_breakpoint (struct target_ops *, struct gdbarch *,
113 struct bp_target_info *);
115 static int debug_to_can_use_hw_breakpoint (struct target_ops *self,
118 static int debug_to_insert_hw_breakpoint (struct target_ops *self,
120 struct bp_target_info *);
122 static int debug_to_remove_hw_breakpoint (struct target_ops *self,
124 struct bp_target_info *);
126 static int debug_to_insert_watchpoint (struct target_ops *self,
128 struct expression *);
130 static int debug_to_remove_watchpoint (struct target_ops *self,
132 struct expression *);
134 static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *);
136 static int debug_to_watchpoint_addr_within_range (struct target_ops *,
137 CORE_ADDR, CORE_ADDR, int);
139 static int debug_to_region_ok_for_hw_watchpoint (struct target_ops *self,
142 static int debug_to_can_accel_watchpoint_condition (struct target_ops *self,
144 struct expression *);
146 static void debug_to_terminal_init (struct target_ops *self);
148 static void debug_to_terminal_inferior (struct target_ops *self);
150 static void debug_to_terminal_ours_for_output (struct target_ops *self);
152 static void debug_to_terminal_save_ours (struct target_ops *self);
154 static void debug_to_terminal_ours (struct target_ops *self);
156 static void debug_to_load (struct target_ops *self, char *, int);
158 static int debug_to_can_run (struct target_ops *self);
160 static void debug_to_stop (struct target_ops *self, ptid_t);
162 /* Pointer to array of target architecture structures; the size of the
163 array; the current index into the array; the allocated size of the
165 struct target_ops **target_structs;
166 unsigned target_struct_size;
167 unsigned target_struct_allocsize;
168 #define DEFAULT_ALLOCSIZE 10
170 /* The initial current target, so that there is always a semi-valid
173 static struct target_ops dummy_target;
175 /* Top of target stack. */
177 static struct target_ops *target_stack;
179 /* The target structure we are currently using to talk to a process
180 or file or whatever "inferior" we have. */
182 struct target_ops current_target;
184 /* Command list for target. */
186 static struct cmd_list_element *targetlist = NULL;
188 /* Nonzero if we should trust readonly sections from the
189 executable when reading memory. */
191 static int trust_readonly = 0;
193 /* Nonzero if we should show true memory content including
194 memory breakpoint inserted by gdb. */
196 static int show_memory_breakpoints = 0;
198 /* These globals control whether GDB attempts to perform these
199 operations; they are useful for targets that need to prevent
200 inadvertant disruption, such as in non-stop mode. */
202 int may_write_registers = 1;
204 int may_write_memory = 1;
206 int may_insert_breakpoints = 1;
208 int may_insert_tracepoints = 1;
210 int may_insert_fast_tracepoints = 1;
214 /* Non-zero if we want to see trace of target level stuff. */
216 static unsigned int targetdebug = 0;
218 show_targetdebug (struct ui_file *file, int from_tty,
219 struct cmd_list_element *c, const char *value)
221 fprintf_filtered (file, _("Target debugging is %s.\n"), value);
224 static void setup_target_debug (void);
226 /* The user just typed 'target' without the name of a target. */
229 target_command (char *arg, int from_tty)
231 fputs_filtered ("Argument required (target name). Try `help target'\n",
235 /* Default target_has_* methods for process_stratum targets. */
238 default_child_has_all_memory (struct target_ops *ops)
240 /* If no inferior selected, then we can't read memory here. */
241 if (ptid_equal (inferior_ptid, null_ptid))
248 default_child_has_memory (struct target_ops *ops)
250 /* If no inferior selected, then we can't read memory here. */
251 if (ptid_equal (inferior_ptid, null_ptid))
258 default_child_has_stack (struct target_ops *ops)
260 /* If no inferior selected, there's no stack. */
261 if (ptid_equal (inferior_ptid, null_ptid))
268 default_child_has_registers (struct target_ops *ops)
270 /* Can't read registers from no inferior. */
271 if (ptid_equal (inferior_ptid, null_ptid))
278 default_child_has_execution (struct target_ops *ops, ptid_t the_ptid)
280 /* If there's no thread selected, then we can't make it run through
282 if (ptid_equal (the_ptid, null_ptid))
290 target_has_all_memory_1 (void)
292 struct target_ops *t;
294 for (t = current_target.beneath; t != NULL; t = t->beneath)
295 if (t->to_has_all_memory (t))
302 target_has_memory_1 (void)
304 struct target_ops *t;
306 for (t = current_target.beneath; t != NULL; t = t->beneath)
307 if (t->to_has_memory (t))
314 target_has_stack_1 (void)
316 struct target_ops *t;
318 for (t = current_target.beneath; t != NULL; t = t->beneath)
319 if (t->to_has_stack (t))
326 target_has_registers_1 (void)
328 struct target_ops *t;
330 for (t = current_target.beneath; t != NULL; t = t->beneath)
331 if (t->to_has_registers (t))
338 target_has_execution_1 (ptid_t the_ptid)
340 struct target_ops *t;
342 for (t = current_target.beneath; t != NULL; t = t->beneath)
343 if (t->to_has_execution (t, the_ptid))
350 target_has_execution_current (void)
352 return target_has_execution_1 (inferior_ptid);
355 /* Complete initialization of T. This ensures that various fields in
356 T are set, if needed by the target implementation. */
359 complete_target_initialization (struct target_ops *t)
361 /* Provide default values for all "must have" methods. */
362 if (t->to_xfer_partial == NULL)
363 t->to_xfer_partial = default_xfer_partial;
365 if (t->to_has_all_memory == NULL)
366 t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero;
368 if (t->to_has_memory == NULL)
369 t->to_has_memory = (int (*) (struct target_ops *)) return_zero;
371 if (t->to_has_stack == NULL)
372 t->to_has_stack = (int (*) (struct target_ops *)) return_zero;
374 if (t->to_has_registers == NULL)
375 t->to_has_registers = (int (*) (struct target_ops *)) return_zero;
377 if (t->to_has_execution == NULL)
378 t->to_has_execution = (int (*) (struct target_ops *, ptid_t)) return_zero;
380 install_delegators (t);
383 /* Add possible target architecture T to the list and add a new
384 command 'target T->to_shortname'. Set COMPLETER as the command's
385 completer if not NULL. */
388 add_target_with_completer (struct target_ops *t,
389 completer_ftype *completer)
391 struct cmd_list_element *c;
393 complete_target_initialization (t);
397 target_struct_allocsize = DEFAULT_ALLOCSIZE;
398 target_structs = (struct target_ops **) xmalloc
399 (target_struct_allocsize * sizeof (*target_structs));
401 if (target_struct_size >= target_struct_allocsize)
403 target_struct_allocsize *= 2;
404 target_structs = (struct target_ops **)
405 xrealloc ((char *) target_structs,
406 target_struct_allocsize * sizeof (*target_structs));
408 target_structs[target_struct_size++] = t;
410 if (targetlist == NULL)
411 add_prefix_cmd ("target", class_run, target_command, _("\
412 Connect to a target machine or process.\n\
413 The first argument is the type or protocol of the target machine.\n\
414 Remaining arguments are interpreted by the target protocol. For more\n\
415 information on the arguments for a particular protocol, type\n\
416 `help target ' followed by the protocol name."),
417 &targetlist, "target ", 0, &cmdlist);
418 c = add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc,
420 if (completer != NULL)
421 set_cmd_completer (c, completer);
424 /* Add a possible target architecture to the list. */
427 add_target (struct target_ops *t)
429 add_target_with_completer (t, NULL);
435 add_deprecated_target_alias (struct target_ops *t, char *alias)
437 struct cmd_list_element *c;
440 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
442 c = add_cmd (alias, no_class, t->to_open, t->to_doc, &targetlist);
443 alt = xstrprintf ("target %s", t->to_shortname);
444 deprecate_cmd (c, alt);
457 struct target_ops *t;
459 for (t = current_target.beneath; t != NULL; t = t->beneath)
460 if (t->to_kill != NULL)
463 fprintf_unfiltered (gdb_stdlog, "target_kill ()\n");
473 target_load (char *arg, int from_tty)
475 target_dcache_invalidate ();
476 (*current_target.to_load) (¤t_target, arg, from_tty);
480 target_create_inferior (char *exec_file, char *args,
481 char **env, int from_tty)
483 struct target_ops *t;
485 for (t = current_target.beneath; t != NULL; t = t->beneath)
487 if (t->to_create_inferior != NULL)
489 t->to_create_inferior (t, exec_file, args, env, from_tty);
491 fprintf_unfiltered (gdb_stdlog,
492 "target_create_inferior (%s, %s, xxx, %d)\n",
493 exec_file, args, from_tty);
498 internal_error (__FILE__, __LINE__,
499 _("could not find a target to create inferior"));
503 target_terminal_inferior (void)
505 /* A background resume (``run&'') should leave GDB in control of the
506 terminal. Use target_can_async_p, not target_is_async_p, since at
507 this point the target is not async yet. However, if sync_execution
508 is not set, we know it will become async prior to resume. */
509 if (target_can_async_p () && !sync_execution)
512 /* If GDB is resuming the inferior in the foreground, install
513 inferior's terminal modes. */
514 (*current_target.to_terminal_inferior) (¤t_target);
518 nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write,
519 struct target_ops *t)
521 errno = EIO; /* Can't read/write this location. */
522 return 0; /* No bytes handled. */
528 error (_("You can't do that when your target is `%s'"),
529 current_target.to_shortname);
535 error (_("You can't do that without a process to debug."));
539 default_terminal_info (struct target_ops *self, const char *args, int from_tty)
541 printf_unfiltered (_("No saved terminal information.\n"));
544 /* A default implementation for the to_get_ada_task_ptid target method.
546 This function builds the PTID by using both LWP and TID as part of
547 the PTID lwp and tid elements. The pid used is the pid of the
551 default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid)
553 return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid);
556 static enum exec_direction_kind
557 default_execution_direction (struct target_ops *self)
559 if (!target_can_execute_reverse)
561 else if (!target_can_async_p ())
564 gdb_assert_not_reached ("\
565 to_execution_direction must be implemented for reverse async");
568 /* Go through the target stack from top to bottom, copying over zero
569 entries in current_target, then filling in still empty entries. In
570 effect, we are doing class inheritance through the pushed target
573 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
574 is currently implemented, is that it discards any knowledge of
575 which target an inherited method originally belonged to.
576 Consequently, new new target methods should instead explicitly and
577 locally search the target stack for the target that can handle the
581 update_current_target (void)
583 struct target_ops *t;
585 /* First, reset current's contents. */
586 memset (¤t_target, 0, sizeof (current_target));
588 /* Install the delegators. */
589 install_delegators (¤t_target);
591 #define INHERIT(FIELD, TARGET) \
592 if (!current_target.FIELD) \
593 current_target.FIELD = (TARGET)->FIELD
595 for (t = target_stack; t; t = t->beneath)
597 INHERIT (to_shortname, t);
598 INHERIT (to_longname, t);
600 /* Do not inherit to_open. */
601 /* Do not inherit to_close. */
602 /* Do not inherit to_attach. */
603 /* Do not inherit to_post_attach. */
604 INHERIT (to_attach_no_wait, t);
605 /* Do not inherit to_detach. */
606 /* Do not inherit to_disconnect. */
607 /* Do not inherit to_resume. */
608 /* Do not inherit to_wait. */
609 /* Do not inherit to_fetch_registers. */
610 /* Do not inherit to_store_registers. */
611 /* Do not inherit to_prepare_to_store. */
612 INHERIT (deprecated_xfer_memory, t);
613 /* Do not inherit to_files_info. */
614 /* Do not inherit to_insert_breakpoint. */
615 /* Do not inherit to_remove_breakpoint. */
616 /* Do not inherit to_can_use_hw_breakpoint. */
617 /* Do not inherit to_insert_hw_breakpoint. */
618 /* Do not inherit to_remove_hw_breakpoint. */
619 /* Do not inherit to_ranged_break_num_registers. */
620 /* Do not inherit to_insert_watchpoint. */
621 /* Do not inherit to_remove_watchpoint. */
622 /* Do not inherit to_insert_mask_watchpoint. */
623 /* Do not inherit to_remove_mask_watchpoint. */
624 /* Do not inherit to_stopped_data_address. */
625 INHERIT (to_have_steppable_watchpoint, t);
626 INHERIT (to_have_continuable_watchpoint, t);
627 /* Do not inherit to_stopped_by_watchpoint. */
628 /* Do not inherit to_watchpoint_addr_within_range. */
629 /* Do not inherit to_region_ok_for_hw_watchpoint. */
630 /* Do not inherit to_can_accel_watchpoint_condition. */
631 /* Do not inherit to_masked_watch_num_registers. */
632 /* Do not inherit to_terminal_init. */
633 /* Do not inherit to_terminal_inferior. */
634 /* Do not inherit to_terminal_ours_for_output. */
635 /* Do not inherit to_terminal_ours. */
636 /* Do not inherit to_terminal_save_ours. */
637 /* Do not inherit to_terminal_info. */
638 /* Do not inherit to_kill. */
639 /* Do not inherit to_load. */
640 /* Do no inherit to_create_inferior. */
641 /* Do not inherit to_post_startup_inferior. */
642 /* Do not inherit to_insert_fork_catchpoint. */
643 /* Do not inherit to_remove_fork_catchpoint. */
644 /* Do not inherit to_insert_vfork_catchpoint. */
645 /* Do not inherit to_remove_vfork_catchpoint. */
646 /* Do not inherit to_follow_fork. */
647 /* Do not inherit to_insert_exec_catchpoint. */
648 /* Do not inherit to_remove_exec_catchpoint. */
649 /* Do not inherit to_set_syscall_catchpoint. */
650 /* Do not inherit to_has_exited. */
651 /* Do not inherit to_mourn_inferior. */
652 INHERIT (to_can_run, t);
653 /* Do not inherit to_pass_signals. */
654 /* Do not inherit to_program_signals. */
655 /* Do not inherit to_thread_alive. */
656 /* Do not inherit to_find_new_threads. */
657 /* Do not inherit to_pid_to_str. */
658 /* Do not inherit to_extra_thread_info. */
659 /* Do not inherit to_thread_name. */
660 INHERIT (to_stop, t);
661 /* Do not inherit to_xfer_partial. */
662 /* Do not inherit to_rcmd. */
663 /* Do not inherit to_pid_to_exec_file. */
664 /* Do not inherit to_log_command. */
665 INHERIT (to_stratum, t);
666 /* Do not inherit to_has_all_memory. */
667 /* Do not inherit to_has_memory. */
668 /* Do not inherit to_has_stack. */
669 /* Do not inherit to_has_registers. */
670 /* Do not inherit to_has_execution. */
671 INHERIT (to_has_thread_control, t);
672 /* Do not inherit to_can_async_p. */
673 /* Do not inherit to_is_async_p. */
674 /* Do not inherit to_async. */
675 /* Do not inherit to_find_memory_regions. */
676 /* Do not inherit to_make_corefile_notes. */
677 /* Do not inherit to_get_bookmark. */
678 /* Do not inherit to_goto_bookmark. */
679 /* Do not inherit to_get_thread_local_address. */
680 /* Do not inherit to_can_execute_reverse. */
681 /* Do not inherit to_execution_direction. */
682 /* Do not inherit to_thread_architecture. */
683 /* Do not inherit to_read_description. */
684 /* Do not inherit to_get_ada_task_ptid. */
685 /* Do not inherit to_search_memory. */
686 /* Do not inherit to_supports_multi_process. */
687 /* Do not inherit to_supports_enable_disable_tracepoint. */
688 /* Do not inherit to_supports_string_tracing. */
689 /* Do not inherit to_trace_init. */
690 /* Do not inherit to_download_tracepoint. */
691 /* Do not inherit to_can_download_tracepoint. */
692 /* Do not inherit to_download_trace_state_variable. */
693 /* Do not inherit to_enable_tracepoint. */
694 /* Do not inherit to_disable_tracepoint. */
695 /* Do not inherit to_trace_set_readonly_regions. */
696 /* Do not inherit to_trace_start. */
697 /* Do not inherit to_get_trace_status. */
698 /* Do not inherit to_get_tracepoint_status. */
699 /* Do not inherit to_trace_stop. */
700 /* Do not inherit to_trace_find. */
701 /* Do not inherit to_get_trace_state_variable_value. */
702 /* Do not inherit to_save_trace_data. */
703 /* Do not inherit to_upload_tracepoints. */
704 /* Do not inherit to_upload_trace_state_variables. */
705 /* Do not inherit to_get_raw_trace_data. */
706 /* Do not inherit to_get_min_fast_tracepoint_insn_len. */
707 /* Do not inherit to_set_disconnected_tracing. */
708 /* Do not inherit to_set_circular_trace_buffer. */
709 /* Do not inherit to_set_trace_buffer_size. */
710 /* Do not inherit to_set_trace_notes. */
711 /* Do not inherit to_get_tib_address. */
712 /* Do not inherit to_set_permissions. */
713 /* Do not inherit to_static_tracepoint_marker_at. */
714 /* Do not inherit to_static_tracepoint_markers_by_strid. */
715 INHERIT (to_traceframe_info, t);
716 INHERIT (to_use_agent, t);
717 INHERIT (to_can_use_agent, t);
718 INHERIT (to_augmented_libraries_svr4_read, t);
719 INHERIT (to_magic, t);
720 INHERIT (to_supports_evaluation_of_breakpoint_conditions, t);
721 INHERIT (to_can_run_breakpoint_commands, t);
722 /* Do not inherit to_memory_map. */
723 /* Do not inherit to_flash_erase. */
724 /* Do not inherit to_flash_done. */
728 /* Clean up a target struct so it no longer has any zero pointers in
729 it. Some entries are defaulted to a method that print an error,
730 others are hard-wired to a standard recursive default. */
732 #define de_fault(field, value) \
733 if (!current_target.field) \
734 current_target.field = value
737 (void (*) (char *, int))
740 (void (*) (struct target_ops *))
742 de_fault (deprecated_xfer_memory,
743 (int (*) (CORE_ADDR, gdb_byte *, int, int,
744 struct mem_attrib *, struct target_ops *))
746 de_fault (to_can_run,
747 (int (*) (struct target_ops *))
750 (void (*) (struct target_ops *, ptid_t))
752 current_target.to_read_description = NULL;
753 de_fault (to_traceframe_info,
754 (struct traceframe_info * (*) (struct target_ops *))
756 de_fault (to_supports_evaluation_of_breakpoint_conditions,
757 (int (*) (struct target_ops *))
759 de_fault (to_can_run_breakpoint_commands,
760 (int (*) (struct target_ops *))
762 de_fault (to_use_agent,
763 (int (*) (struct target_ops *, int))
765 de_fault (to_can_use_agent,
766 (int (*) (struct target_ops *))
768 de_fault (to_augmented_libraries_svr4_read,
769 (int (*) (struct target_ops *))
774 /* Finally, position the target-stack beneath the squashed
775 "current_target". That way code looking for a non-inherited
776 target method can quickly and simply find it. */
777 current_target.beneath = target_stack;
780 setup_target_debug ();
783 /* Push a new target type into the stack of the existing target accessors,
784 possibly superseding some of the existing accessors.
786 Rather than allow an empty stack, we always have the dummy target at
787 the bottom stratum, so we can call the function vectors without
791 push_target (struct target_ops *t)
793 struct target_ops **cur;
795 /* Check magic number. If wrong, it probably means someone changed
796 the struct definition, but not all the places that initialize one. */
797 if (t->to_magic != OPS_MAGIC)
799 fprintf_unfiltered (gdb_stderr,
800 "Magic number of %s target struct wrong\n",
802 internal_error (__FILE__, __LINE__,
803 _("failed internal consistency check"));
806 /* Find the proper stratum to install this target in. */
807 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
809 if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum)
813 /* If there's already targets at this stratum, remove them. */
814 /* FIXME: cagney/2003-10-15: I think this should be popping all
815 targets to CUR, and not just those at this stratum level. */
816 while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum)
818 /* There's already something at this stratum level. Close it,
819 and un-hook it from the stack. */
820 struct target_ops *tmp = (*cur);
822 (*cur) = (*cur)->beneath;
827 /* We have removed all targets in our stratum, now add the new one. */
831 update_current_target ();
834 /* Remove a target_ops vector from the stack, wherever it may be.
835 Return how many times it was removed (0 or 1). */
838 unpush_target (struct target_ops *t)
840 struct target_ops **cur;
841 struct target_ops *tmp;
843 if (t->to_stratum == dummy_stratum)
844 internal_error (__FILE__, __LINE__,
845 _("Attempt to unpush the dummy target"));
847 /* Look for the specified target. Note that we assume that a target
848 can only occur once in the target stack. */
850 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
856 /* If we don't find target_ops, quit. Only open targets should be
861 /* Unchain the target. */
863 (*cur) = (*cur)->beneath;
866 update_current_target ();
868 /* Finally close the target. Note we do this after unchaining, so
869 any target method calls from within the target_close
870 implementation don't end up in T anymore. */
877 pop_all_targets_above (enum strata above_stratum)
879 while ((int) (current_target.to_stratum) > (int) above_stratum)
881 if (!unpush_target (target_stack))
883 fprintf_unfiltered (gdb_stderr,
884 "pop_all_targets couldn't find target %s\n",
885 target_stack->to_shortname);
886 internal_error (__FILE__, __LINE__,
887 _("failed internal consistency check"));
894 pop_all_targets (void)
896 pop_all_targets_above (dummy_stratum);
899 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
902 target_is_pushed (struct target_ops *t)
904 struct target_ops **cur;
906 /* Check magic number. If wrong, it probably means someone changed
907 the struct definition, but not all the places that initialize one. */
908 if (t->to_magic != OPS_MAGIC)
910 fprintf_unfiltered (gdb_stderr,
911 "Magic number of %s target struct wrong\n",
913 internal_error (__FILE__, __LINE__,
914 _("failed internal consistency check"));
917 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
924 /* Using the objfile specified in OBJFILE, find the address for the
925 current thread's thread-local storage with offset OFFSET. */
927 target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset)
929 volatile CORE_ADDR addr = 0;
930 struct target_ops *target;
932 for (target = current_target.beneath;
934 target = target->beneath)
936 if (target->to_get_thread_local_address != NULL)
941 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
943 ptid_t ptid = inferior_ptid;
944 volatile struct gdb_exception ex;
946 TRY_CATCH (ex, RETURN_MASK_ALL)
950 /* Fetch the load module address for this objfile. */
951 lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (),
953 /* If it's 0, throw the appropriate exception. */
955 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR,
956 _("TLS load module not found"));
958 addr = target->to_get_thread_local_address (target, ptid,
961 /* If an error occurred, print TLS related messages here. Otherwise,
962 throw the error to some higher catcher. */
965 int objfile_is_library = (objfile->flags & OBJF_SHARED);
969 case TLS_NO_LIBRARY_SUPPORT_ERROR:
970 error (_("Cannot find thread-local variables "
971 "in this thread library."));
973 case TLS_LOAD_MODULE_NOT_FOUND_ERROR:
974 if (objfile_is_library)
975 error (_("Cannot find shared library `%s' in dynamic"
976 " linker's load module list"), objfile_name (objfile));
978 error (_("Cannot find executable file `%s' in dynamic"
979 " linker's load module list"), objfile_name (objfile));
981 case TLS_NOT_ALLOCATED_YET_ERROR:
982 if (objfile_is_library)
983 error (_("The inferior has not yet allocated storage for"
984 " thread-local variables in\n"
985 "the shared library `%s'\n"
987 objfile_name (objfile), target_pid_to_str (ptid));
989 error (_("The inferior has not yet allocated storage for"
990 " thread-local variables in\n"
991 "the executable `%s'\n"
993 objfile_name (objfile), target_pid_to_str (ptid));
995 case TLS_GENERIC_ERROR:
996 if (objfile_is_library)
997 error (_("Cannot find thread-local storage for %s, "
998 "shared library %s:\n%s"),
999 target_pid_to_str (ptid),
1000 objfile_name (objfile), ex.message);
1002 error (_("Cannot find thread-local storage for %s, "
1003 "executable file %s:\n%s"),
1004 target_pid_to_str (ptid),
1005 objfile_name (objfile), ex.message);
1008 throw_exception (ex);
1013 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1014 TLS is an ABI-specific thing. But we don't do that yet. */
1016 error (_("Cannot find thread-local variables on this target"));
1022 target_xfer_status_to_string (enum target_xfer_status err)
1024 #define CASE(X) case X: return #X
1027 CASE(TARGET_XFER_E_IO);
1028 CASE(TARGET_XFER_E_UNAVAILABLE);
1037 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1039 /* target_read_string -- read a null terminated string, up to LEN bytes,
1040 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1041 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1042 is responsible for freeing it. Return the number of bytes successfully
1046 target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop)
1048 int tlen, offset, i;
1052 int buffer_allocated;
1054 unsigned int nbytes_read = 0;
1056 gdb_assert (string);
1058 /* Small for testing. */
1059 buffer_allocated = 4;
1060 buffer = xmalloc (buffer_allocated);
1065 tlen = MIN (len, 4 - (memaddr & 3));
1066 offset = memaddr & 3;
1068 errcode = target_read_memory (memaddr & ~3, buf, sizeof buf);
1071 /* The transfer request might have crossed the boundary to an
1072 unallocated region of memory. Retry the transfer, requesting
1076 errcode = target_read_memory (memaddr, buf, 1);
1081 if (bufptr - buffer + tlen > buffer_allocated)
1085 bytes = bufptr - buffer;
1086 buffer_allocated *= 2;
1087 buffer = xrealloc (buffer, buffer_allocated);
1088 bufptr = buffer + bytes;
1091 for (i = 0; i < tlen; i++)
1093 *bufptr++ = buf[i + offset];
1094 if (buf[i + offset] == '\000')
1096 nbytes_read += i + 1;
1103 nbytes_read += tlen;
1112 struct target_section_table *
1113 target_get_section_table (struct target_ops *target)
1115 struct target_ops *t;
1118 fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n");
1120 for (t = target; t != NULL; t = t->beneath)
1121 if (t->to_get_section_table != NULL)
1122 return (*t->to_get_section_table) (t);
1127 /* Find a section containing ADDR. */
1129 struct target_section *
1130 target_section_by_addr (struct target_ops *target, CORE_ADDR addr)
1132 struct target_section_table *table = target_get_section_table (target);
1133 struct target_section *secp;
1138 for (secp = table->sections; secp < table->sections_end; secp++)
1140 if (addr >= secp->addr && addr < secp->endaddr)
1146 /* Read memory from the live target, even if currently inspecting a
1147 traceframe. The return is the same as that of target_read. */
1149 static enum target_xfer_status
1150 target_read_live_memory (enum target_object object,
1151 ULONGEST memaddr, gdb_byte *myaddr, ULONGEST len,
1152 ULONGEST *xfered_len)
1154 enum target_xfer_status ret;
1155 struct cleanup *cleanup;
1157 /* Switch momentarily out of tfind mode so to access live memory.
1158 Note that this must not clear global state, such as the frame
1159 cache, which must still remain valid for the previous traceframe.
1160 We may be _building_ the frame cache at this point. */
1161 cleanup = make_cleanup_restore_traceframe_number ();
1162 set_traceframe_number (-1);
1164 ret = target_xfer_partial (current_target.beneath, object, NULL,
1165 myaddr, NULL, memaddr, len, xfered_len);
1167 do_cleanups (cleanup);
1171 /* Using the set of read-only target sections of OPS, read live
1172 read-only memory. Note that the actual reads start from the
1173 top-most target again.
1175 For interface/parameters/return description see target.h,
1178 static enum target_xfer_status
1179 memory_xfer_live_readonly_partial (struct target_ops *ops,
1180 enum target_object object,
1181 gdb_byte *readbuf, ULONGEST memaddr,
1182 ULONGEST len, ULONGEST *xfered_len)
1184 struct target_section *secp;
1185 struct target_section_table *table;
1187 secp = target_section_by_addr (ops, memaddr);
1189 && (bfd_get_section_flags (secp->the_bfd_section->owner,
1190 secp->the_bfd_section)
1193 struct target_section *p;
1194 ULONGEST memend = memaddr + len;
1196 table = target_get_section_table (ops);
1198 for (p = table->sections; p < table->sections_end; p++)
1200 if (memaddr >= p->addr)
1202 if (memend <= p->endaddr)
1204 /* Entire transfer is within this section. */
1205 return target_read_live_memory (object, memaddr,
1206 readbuf, len, xfered_len);
1208 else if (memaddr >= p->endaddr)
1210 /* This section ends before the transfer starts. */
1215 /* This section overlaps the transfer. Just do half. */
1216 len = p->endaddr - memaddr;
1217 return target_read_live_memory (object, memaddr,
1218 readbuf, len, xfered_len);
1224 return TARGET_XFER_EOF;
1227 /* Read memory from more than one valid target. A core file, for
1228 instance, could have some of memory but delegate other bits to
1229 the target below it. So, we must manually try all targets. */
1231 static enum target_xfer_status
1232 raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf,
1233 const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len,
1234 ULONGEST *xfered_len)
1236 enum target_xfer_status res;
1240 res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL,
1241 readbuf, writebuf, memaddr, len,
1243 if (res == TARGET_XFER_OK)
1246 /* Stop if the target reports that the memory is not available. */
1247 if (res == TARGET_XFER_E_UNAVAILABLE)
1250 /* We want to continue past core files to executables, but not
1251 past a running target's memory. */
1252 if (ops->to_has_all_memory (ops))
1257 while (ops != NULL);
1262 /* Perform a partial memory transfer.
1263 For docs see target.h, to_xfer_partial. */
1265 static enum target_xfer_status
1266 memory_xfer_partial_1 (struct target_ops *ops, enum target_object object,
1267 gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr,
1268 ULONGEST len, ULONGEST *xfered_len)
1270 enum target_xfer_status res;
1272 struct mem_region *region;
1273 struct inferior *inf;
1275 /* For accesses to unmapped overlay sections, read directly from
1276 files. Must do this first, as MEMADDR may need adjustment. */
1277 if (readbuf != NULL && overlay_debugging)
1279 struct obj_section *section = find_pc_overlay (memaddr);
1281 if (pc_in_unmapped_range (memaddr, section))
1283 struct target_section_table *table
1284 = target_get_section_table (ops);
1285 const char *section_name = section->the_bfd_section->name;
1287 memaddr = overlay_mapped_address (memaddr, section);
1288 return section_table_xfer_memory_partial (readbuf, writebuf,
1289 memaddr, len, xfered_len,
1291 table->sections_end,
1296 /* Try the executable files, if "trust-readonly-sections" is set. */
1297 if (readbuf != NULL && trust_readonly)
1299 struct target_section *secp;
1300 struct target_section_table *table;
1302 secp = target_section_by_addr (ops, memaddr);
1304 && (bfd_get_section_flags (secp->the_bfd_section->owner,
1305 secp->the_bfd_section)
1308 table = target_get_section_table (ops);
1309 return section_table_xfer_memory_partial (readbuf, writebuf,
1310 memaddr, len, xfered_len,
1312 table->sections_end,
1317 /* If reading unavailable memory in the context of traceframes, and
1318 this address falls within a read-only section, fallback to
1319 reading from live memory. */
1320 if (readbuf != NULL && get_traceframe_number () != -1)
1322 VEC(mem_range_s) *available;
1324 /* If we fail to get the set of available memory, then the
1325 target does not support querying traceframe info, and so we
1326 attempt reading from the traceframe anyway (assuming the
1327 target implements the old QTro packet then). */
1328 if (traceframe_available_memory (&available, memaddr, len))
1330 struct cleanup *old_chain;
1332 old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available);
1334 if (VEC_empty (mem_range_s, available)
1335 || VEC_index (mem_range_s, available, 0)->start != memaddr)
1337 /* Don't read into the traceframe's available
1339 if (!VEC_empty (mem_range_s, available))
1341 LONGEST oldlen = len;
1343 len = VEC_index (mem_range_s, available, 0)->start - memaddr;
1344 gdb_assert (len <= oldlen);
1347 do_cleanups (old_chain);
1349 /* This goes through the topmost target again. */
1350 res = memory_xfer_live_readonly_partial (ops, object,
1353 if (res == TARGET_XFER_OK)
1354 return TARGET_XFER_OK;
1357 /* No use trying further, we know some memory starting
1358 at MEMADDR isn't available. */
1360 return TARGET_XFER_E_UNAVAILABLE;
1364 /* Don't try to read more than how much is available, in
1365 case the target implements the deprecated QTro packet to
1366 cater for older GDBs (the target's knowledge of read-only
1367 sections may be outdated by now). */
1368 len = VEC_index (mem_range_s, available, 0)->length;
1370 do_cleanups (old_chain);
1374 /* Try GDB's internal data cache. */
1375 region = lookup_mem_region (memaddr);
1376 /* region->hi == 0 means there's no upper bound. */
1377 if (memaddr + len < region->hi || region->hi == 0)
1380 reg_len = region->hi - memaddr;
1382 switch (region->attrib.mode)
1385 if (writebuf != NULL)
1386 return TARGET_XFER_E_IO;
1390 if (readbuf != NULL)
1391 return TARGET_XFER_E_IO;
1395 /* We only support writing to flash during "load" for now. */
1396 if (writebuf != NULL)
1397 error (_("Writing to flash memory forbidden in this context"));
1401 return TARGET_XFER_E_IO;
1404 if (!ptid_equal (inferior_ptid, null_ptid))
1405 inf = find_inferior_pid (ptid_get_pid (inferior_ptid));
1410 /* The dcache reads whole cache lines; that doesn't play well
1411 with reading from a trace buffer, because reading outside of
1412 the collected memory range fails. */
1413 && get_traceframe_number () == -1
1414 && (region->attrib.cache
1415 || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY)
1416 || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY)))
1418 DCACHE *dcache = target_dcache_get_or_init ();
1421 if (readbuf != NULL)
1422 l = dcache_xfer_memory (ops, dcache, memaddr, readbuf, reg_len, 0);
1424 /* FIXME drow/2006-08-09: If we're going to preserve const
1425 correctness dcache_xfer_memory should take readbuf and
1427 l = dcache_xfer_memory (ops, dcache, memaddr, (void *) writebuf,
1430 return TARGET_XFER_E_IO;
1433 *xfered_len = (ULONGEST) l;
1434 return TARGET_XFER_OK;
1438 /* If none of those methods found the memory we wanted, fall back
1439 to a target partial transfer. Normally a single call to
1440 to_xfer_partial is enough; if it doesn't recognize an object
1441 it will call the to_xfer_partial of the next target down.
1442 But for memory this won't do. Memory is the only target
1443 object which can be read from more than one valid target.
1444 A core file, for instance, could have some of memory but
1445 delegate other bits to the target below it. So, we must
1446 manually try all targets. */
1448 res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len,
1451 /* Make sure the cache gets updated no matter what - if we are writing
1452 to the stack. Even if this write is not tagged as such, we still need
1453 to update the cache. */
1455 if (res == TARGET_XFER_OK
1458 && target_dcache_init_p ()
1459 && !region->attrib.cache
1460 && ((stack_cache_enabled_p () && object != TARGET_OBJECT_STACK_MEMORY)
1461 || (code_cache_enabled_p () && object != TARGET_OBJECT_CODE_MEMORY)))
1463 DCACHE *dcache = target_dcache_get ();
1465 dcache_update (dcache, memaddr, (void *) writebuf, reg_len);
1468 /* If we still haven't got anything, return the last error. We
1473 /* Perform a partial memory transfer. For docs see target.h,
1476 static enum target_xfer_status
1477 memory_xfer_partial (struct target_ops *ops, enum target_object object,
1478 gdb_byte *readbuf, const gdb_byte *writebuf,
1479 ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len)
1481 enum target_xfer_status res;
1483 /* Zero length requests are ok and require no work. */
1485 return TARGET_XFER_EOF;
1487 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1488 breakpoint insns, thus hiding out from higher layers whether
1489 there are software breakpoints inserted in the code stream. */
1490 if (readbuf != NULL)
1492 res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len,
1495 if (res == TARGET_XFER_OK && !show_memory_breakpoints)
1496 breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, res);
1501 struct cleanup *old_chain;
1503 /* A large write request is likely to be partially satisfied
1504 by memory_xfer_partial_1. We will continually malloc
1505 and free a copy of the entire write request for breakpoint
1506 shadow handling even though we only end up writing a small
1507 subset of it. Cap writes to 4KB to mitigate this. */
1508 len = min (4096, len);
1510 buf = xmalloc (len);
1511 old_chain = make_cleanup (xfree, buf);
1512 memcpy (buf, writebuf, len);
1514 breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len);
1515 res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len,
1518 do_cleanups (old_chain);
1525 restore_show_memory_breakpoints (void *arg)
1527 show_memory_breakpoints = (uintptr_t) arg;
1531 make_show_memory_breakpoints_cleanup (int show)
1533 int current = show_memory_breakpoints;
1535 show_memory_breakpoints = show;
1536 return make_cleanup (restore_show_memory_breakpoints,
1537 (void *) (uintptr_t) current);
1540 /* For docs see target.h, to_xfer_partial. */
1542 enum target_xfer_status
1543 target_xfer_partial (struct target_ops *ops,
1544 enum target_object object, const char *annex,
1545 gdb_byte *readbuf, const gdb_byte *writebuf,
1546 ULONGEST offset, ULONGEST len,
1547 ULONGEST *xfered_len)
1549 enum target_xfer_status retval;
1551 gdb_assert (ops->to_xfer_partial != NULL);
1553 /* Transfer is done when LEN is zero. */
1555 return TARGET_XFER_EOF;
1557 if (writebuf && !may_write_memory)
1558 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1559 core_addr_to_string_nz (offset), plongest (len));
1563 /* If this is a memory transfer, let the memory-specific code
1564 have a look at it instead. Memory transfers are more
1566 if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY
1567 || object == TARGET_OBJECT_CODE_MEMORY)
1568 retval = memory_xfer_partial (ops, object, readbuf,
1569 writebuf, offset, len, xfered_len);
1570 else if (object == TARGET_OBJECT_RAW_MEMORY)
1572 /* Request the normal memory object from other layers. */
1573 retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len,
1577 retval = ops->to_xfer_partial (ops, object, annex, readbuf,
1578 writebuf, offset, len, xfered_len);
1582 const unsigned char *myaddr = NULL;
1584 fprintf_unfiltered (gdb_stdlog,
1585 "%s:target_xfer_partial "
1586 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1589 (annex ? annex : "(null)"),
1590 host_address_to_string (readbuf),
1591 host_address_to_string (writebuf),
1592 core_addr_to_string_nz (offset),
1593 pulongest (len), retval,
1594 pulongest (*xfered_len));
1600 if (retval == TARGET_XFER_OK && myaddr != NULL)
1604 fputs_unfiltered (", bytes =", gdb_stdlog);
1605 for (i = 0; i < *xfered_len; i++)
1607 if ((((intptr_t) &(myaddr[i])) & 0xf) == 0)
1609 if (targetdebug < 2 && i > 0)
1611 fprintf_unfiltered (gdb_stdlog, " ...");
1614 fprintf_unfiltered (gdb_stdlog, "\n");
1617 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
1621 fputc_unfiltered ('\n', gdb_stdlog);
1624 /* Check implementations of to_xfer_partial update *XFERED_LEN
1625 properly. Do assertion after printing debug messages, so that we
1626 can find more clues on assertion failure from debugging messages. */
1627 if (retval == TARGET_XFER_OK || retval == TARGET_XFER_E_UNAVAILABLE)
1628 gdb_assert (*xfered_len > 0);
1633 /* Read LEN bytes of target memory at address MEMADDR, placing the
1634 results in GDB's memory at MYADDR. Returns either 0 for success or
1635 TARGET_XFER_E_IO if any error occurs.
1637 If an error occurs, no guarantee is made about the contents of the data at
1638 MYADDR. In particular, the caller should not depend upon partial reads
1639 filling the buffer with good data. There is no way for the caller to know
1640 how much good data might have been transfered anyway. Callers that can
1641 deal with partial reads should call target_read (which will retry until
1642 it makes no progress, and then return how much was transferred). */
1645 target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1647 /* Dispatch to the topmost target, not the flattened current_target.
1648 Memory accesses check target->to_has_(all_)memory, and the
1649 flattened target doesn't inherit those. */
1650 if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL,
1651 myaddr, memaddr, len) == len)
1654 return TARGET_XFER_E_IO;
1657 /* Like target_read_memory, but specify explicitly that this is a read
1658 from the target's raw memory. That is, this read bypasses the
1659 dcache, breakpoint shadowing, etc. */
1662 target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1664 /* See comment in target_read_memory about why the request starts at
1665 current_target.beneath. */
1666 if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL,
1667 myaddr, memaddr, len) == len)
1670 return TARGET_XFER_E_IO;
1673 /* Like target_read_memory, but specify explicitly that this is a read from
1674 the target's stack. This may trigger different cache behavior. */
1677 target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1679 /* See comment in target_read_memory about why the request starts at
1680 current_target.beneath. */
1681 if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL,
1682 myaddr, memaddr, len) == len)
1685 return TARGET_XFER_E_IO;
1688 /* Like target_read_memory, but specify explicitly that this is a read from
1689 the target's code. This may trigger different cache behavior. */
1692 target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1694 /* See comment in target_read_memory about why the request starts at
1695 current_target.beneath. */
1696 if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL,
1697 myaddr, memaddr, len) == len)
1700 return TARGET_XFER_E_IO;
1703 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1704 Returns either 0 for success or TARGET_XFER_E_IO if any
1705 error occurs. If an error occurs, no guarantee is made about how
1706 much data got written. Callers that can deal with partial writes
1707 should call target_write. */
1710 target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
1712 /* See comment in target_read_memory about why the request starts at
1713 current_target.beneath. */
1714 if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL,
1715 myaddr, memaddr, len) == len)
1718 return TARGET_XFER_E_IO;
1721 /* Write LEN bytes from MYADDR to target raw memory at address
1722 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1723 if any error occurs. If an error occurs, no guarantee is made
1724 about how much data got written. Callers that can deal with
1725 partial writes should call target_write. */
1728 target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
1730 /* See comment in target_read_memory about why the request starts at
1731 current_target.beneath. */
1732 if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL,
1733 myaddr, memaddr, len) == len)
1736 return TARGET_XFER_E_IO;
1739 /* Fetch the target's memory map. */
1742 target_memory_map (void)
1744 VEC(mem_region_s) *result;
1745 struct mem_region *last_one, *this_one;
1747 struct target_ops *t;
1750 fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n");
1752 for (t = current_target.beneath; t != NULL; t = t->beneath)
1753 if (t->to_memory_map != NULL)
1759 result = t->to_memory_map (t);
1763 qsort (VEC_address (mem_region_s, result),
1764 VEC_length (mem_region_s, result),
1765 sizeof (struct mem_region), mem_region_cmp);
1767 /* Check that regions do not overlap. Simultaneously assign
1768 a numbering for the "mem" commands to use to refer to
1771 for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++)
1773 this_one->number = ix;
1775 if (last_one && last_one->hi > this_one->lo)
1777 warning (_("Overlapping regions in memory map: ignoring"));
1778 VEC_free (mem_region_s, result);
1781 last_one = this_one;
1788 target_flash_erase (ULONGEST address, LONGEST length)
1790 struct target_ops *t;
1792 for (t = current_target.beneath; t != NULL; t = t->beneath)
1793 if (t->to_flash_erase != NULL)
1796 fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n",
1797 hex_string (address), phex (length, 0));
1798 t->to_flash_erase (t, address, length);
1806 target_flash_done (void)
1808 struct target_ops *t;
1810 for (t = current_target.beneath; t != NULL; t = t->beneath)
1811 if (t->to_flash_done != NULL)
1814 fprintf_unfiltered (gdb_stdlog, "target_flash_done\n");
1815 t->to_flash_done (t);
1823 show_trust_readonly (struct ui_file *file, int from_tty,
1824 struct cmd_list_element *c, const char *value)
1826 fprintf_filtered (file,
1827 _("Mode for reading from readonly sections is %s.\n"),
1831 /* More generic transfers. */
1833 static enum target_xfer_status
1834 default_xfer_partial (struct target_ops *ops, enum target_object object,
1835 const char *annex, gdb_byte *readbuf,
1836 const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
1837 ULONGEST *xfered_len)
1839 if (object == TARGET_OBJECT_MEMORY
1840 && ops->deprecated_xfer_memory != NULL)
1841 /* If available, fall back to the target's
1842 "deprecated_xfer_memory" method. */
1847 if (writebuf != NULL)
1849 void *buffer = xmalloc (len);
1850 struct cleanup *cleanup = make_cleanup (xfree, buffer);
1852 memcpy (buffer, writebuf, len);
1853 xfered = ops->deprecated_xfer_memory (offset, buffer, len,
1854 1/*write*/, NULL, ops);
1855 do_cleanups (cleanup);
1857 if (readbuf != NULL)
1858 xfered = ops->deprecated_xfer_memory (offset, readbuf, len,
1859 0/*read*/, NULL, ops);
1862 *xfered_len = (ULONGEST) xfered;
1863 return TARGET_XFER_E_IO;
1865 else if (xfered == 0 && errno == 0)
1866 /* "deprecated_xfer_memory" uses 0, cross checked against
1867 ERRNO as one indication of an error. */
1868 return TARGET_XFER_EOF;
1870 return TARGET_XFER_E_IO;
1874 gdb_assert (ops->beneath != NULL);
1875 return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
1876 readbuf, writebuf, offset, len,
1881 /* Target vector read/write partial wrapper functions. */
1883 static enum target_xfer_status
1884 target_read_partial (struct target_ops *ops,
1885 enum target_object object,
1886 const char *annex, gdb_byte *buf,
1887 ULONGEST offset, ULONGEST len,
1888 ULONGEST *xfered_len)
1890 return target_xfer_partial (ops, object, annex, buf, NULL, offset, len,
1894 static enum target_xfer_status
1895 target_write_partial (struct target_ops *ops,
1896 enum target_object object,
1897 const char *annex, const gdb_byte *buf,
1898 ULONGEST offset, LONGEST len, ULONGEST *xfered_len)
1900 return target_xfer_partial (ops, object, annex, NULL, buf, offset, len,
1904 /* Wrappers to perform the full transfer. */
1906 /* For docs on target_read see target.h. */
1909 target_read (struct target_ops *ops,
1910 enum target_object object,
1911 const char *annex, gdb_byte *buf,
1912 ULONGEST offset, LONGEST len)
1916 while (xfered < len)
1918 ULONGEST xfered_len;
1919 enum target_xfer_status status;
1921 status = target_read_partial (ops, object, annex,
1922 (gdb_byte *) buf + xfered,
1923 offset + xfered, len - xfered,
1926 /* Call an observer, notifying them of the xfer progress? */
1927 if (status == TARGET_XFER_EOF)
1929 else if (status == TARGET_XFER_OK)
1931 xfered += xfered_len;
1941 /* Assuming that the entire [begin, end) range of memory cannot be
1942 read, try to read whatever subrange is possible to read.
1944 The function returns, in RESULT, either zero or one memory block.
1945 If there's a readable subrange at the beginning, it is completely
1946 read and returned. Any further readable subrange will not be read.
1947 Otherwise, if there's a readable subrange at the end, it will be
1948 completely read and returned. Any readable subranges before it
1949 (obviously, not starting at the beginning), will be ignored. In
1950 other cases -- either no readable subrange, or readable subrange(s)
1951 that is neither at the beginning, or end, nothing is returned.
1953 The purpose of this function is to handle a read across a boundary
1954 of accessible memory in a case when memory map is not available.
1955 The above restrictions are fine for this case, but will give
1956 incorrect results if the memory is 'patchy'. However, supporting
1957 'patchy' memory would require trying to read every single byte,
1958 and it seems unacceptable solution. Explicit memory map is
1959 recommended for this case -- and target_read_memory_robust will
1960 take care of reading multiple ranges then. */
1963 read_whatever_is_readable (struct target_ops *ops,
1964 ULONGEST begin, ULONGEST end,
1965 VEC(memory_read_result_s) **result)
1967 gdb_byte *buf = xmalloc (end - begin);
1968 ULONGEST current_begin = begin;
1969 ULONGEST current_end = end;
1971 memory_read_result_s r;
1972 ULONGEST xfered_len;
1974 /* If we previously failed to read 1 byte, nothing can be done here. */
1975 if (end - begin <= 1)
1981 /* Check that either first or the last byte is readable, and give up
1982 if not. This heuristic is meant to permit reading accessible memory
1983 at the boundary of accessible region. */
1984 if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL,
1985 buf, begin, 1, &xfered_len) == TARGET_XFER_OK)
1990 else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL,
1991 buf + (end-begin) - 1, end - 1, 1,
1992 &xfered_len) == TARGET_XFER_OK)
2003 /* Loop invariant is that the [current_begin, current_end) was previously
2004 found to be not readable as a whole.
2006 Note loop condition -- if the range has 1 byte, we can't divide the range
2007 so there's no point trying further. */
2008 while (current_end - current_begin > 1)
2010 ULONGEST first_half_begin, first_half_end;
2011 ULONGEST second_half_begin, second_half_end;
2013 ULONGEST middle = current_begin + (current_end - current_begin)/2;
2017 first_half_begin = current_begin;
2018 first_half_end = middle;
2019 second_half_begin = middle;
2020 second_half_end = current_end;
2024 first_half_begin = middle;
2025 first_half_end = current_end;
2026 second_half_begin = current_begin;
2027 second_half_end = middle;
2030 xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2031 buf + (first_half_begin - begin),
2033 first_half_end - first_half_begin);
2035 if (xfer == first_half_end - first_half_begin)
2037 /* This half reads up fine. So, the error must be in the
2039 current_begin = second_half_begin;
2040 current_end = second_half_end;
2044 /* This half is not readable. Because we've tried one byte, we
2045 know some part of this half if actually redable. Go to the next
2046 iteration to divide again and try to read.
2048 We don't handle the other half, because this function only tries
2049 to read a single readable subrange. */
2050 current_begin = first_half_begin;
2051 current_end = first_half_end;
2057 /* The [begin, current_begin) range has been read. */
2059 r.end = current_begin;
2064 /* The [current_end, end) range has been read. */
2065 LONGEST rlen = end - current_end;
2067 r.data = xmalloc (rlen);
2068 memcpy (r.data, buf + current_end - begin, rlen);
2069 r.begin = current_end;
2073 VEC_safe_push(memory_read_result_s, (*result), &r);
2077 free_memory_read_result_vector (void *x)
2079 VEC(memory_read_result_s) *v = x;
2080 memory_read_result_s *current;
2083 for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix)
2085 xfree (current->data);
2087 VEC_free (memory_read_result_s, v);
2090 VEC(memory_read_result_s) *
2091 read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len)
2093 VEC(memory_read_result_s) *result = 0;
2096 while (xfered < len)
2098 struct mem_region *region = lookup_mem_region (offset + xfered);
2101 /* If there is no explicit region, a fake one should be created. */
2102 gdb_assert (region);
2104 if (region->hi == 0)
2105 rlen = len - xfered;
2107 rlen = region->hi - offset;
2109 if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO)
2111 /* Cannot read this region. Note that we can end up here only
2112 if the region is explicitly marked inaccessible, or
2113 'inaccessible-by-default' is in effect. */
2118 LONGEST to_read = min (len - xfered, rlen);
2119 gdb_byte *buffer = (gdb_byte *)xmalloc (to_read);
2121 LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2122 (gdb_byte *) buffer,
2123 offset + xfered, to_read);
2124 /* Call an observer, notifying them of the xfer progress? */
2127 /* Got an error reading full chunk. See if maybe we can read
2130 read_whatever_is_readable (ops, offset + xfered,
2131 offset + xfered + to_read, &result);
2136 struct memory_read_result r;
2138 r.begin = offset + xfered;
2139 r.end = r.begin + xfer;
2140 VEC_safe_push (memory_read_result_s, result, &r);
2150 /* An alternative to target_write with progress callbacks. */
2153 target_write_with_progress (struct target_ops *ops,
2154 enum target_object object,
2155 const char *annex, const gdb_byte *buf,
2156 ULONGEST offset, LONGEST len,
2157 void (*progress) (ULONGEST, void *), void *baton)
2161 /* Give the progress callback a chance to set up. */
2163 (*progress) (0, baton);
2165 while (xfered < len)
2167 ULONGEST xfered_len;
2168 enum target_xfer_status status;
2170 status = target_write_partial (ops, object, annex,
2171 (gdb_byte *) buf + xfered,
2172 offset + xfered, len - xfered,
2175 if (status == TARGET_XFER_EOF)
2177 if (TARGET_XFER_STATUS_ERROR_P (status))
2180 gdb_assert (status == TARGET_XFER_OK);
2182 (*progress) (xfered_len, baton);
2184 xfered += xfered_len;
2190 /* For docs on target_write see target.h. */
2193 target_write (struct target_ops *ops,
2194 enum target_object object,
2195 const char *annex, const gdb_byte *buf,
2196 ULONGEST offset, LONGEST len)
2198 return target_write_with_progress (ops, object, annex, buf, offset, len,
2202 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2203 the size of the transferred data. PADDING additional bytes are
2204 available in *BUF_P. This is a helper function for
2205 target_read_alloc; see the declaration of that function for more
2209 target_read_alloc_1 (struct target_ops *ops, enum target_object object,
2210 const char *annex, gdb_byte **buf_p, int padding)
2212 size_t buf_alloc, buf_pos;
2215 /* This function does not have a length parameter; it reads the
2216 entire OBJECT). Also, it doesn't support objects fetched partly
2217 from one target and partly from another (in a different stratum,
2218 e.g. a core file and an executable). Both reasons make it
2219 unsuitable for reading memory. */
2220 gdb_assert (object != TARGET_OBJECT_MEMORY);
2222 /* Start by reading up to 4K at a time. The target will throttle
2223 this number down if necessary. */
2225 buf = xmalloc (buf_alloc);
2229 ULONGEST xfered_len;
2230 enum target_xfer_status status;
2232 status = target_read_partial (ops, object, annex, &buf[buf_pos],
2233 buf_pos, buf_alloc - buf_pos - padding,
2236 if (status == TARGET_XFER_EOF)
2238 /* Read all there was. */
2245 else if (status != TARGET_XFER_OK)
2247 /* An error occurred. */
2249 return TARGET_XFER_E_IO;
2252 buf_pos += xfered_len;
2254 /* If the buffer is filling up, expand it. */
2255 if (buf_alloc < buf_pos * 2)
2258 buf = xrealloc (buf, buf_alloc);
2265 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2266 the size of the transferred data. See the declaration in "target.h"
2267 function for more information about the return value. */
2270 target_read_alloc (struct target_ops *ops, enum target_object object,
2271 const char *annex, gdb_byte **buf_p)
2273 return target_read_alloc_1 (ops, object, annex, buf_p, 0);
2276 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2277 returned as a string, allocated using xmalloc. If an error occurs
2278 or the transfer is unsupported, NULL is returned. Empty objects
2279 are returned as allocated but empty strings. A warning is issued
2280 if the result contains any embedded NUL bytes. */
2283 target_read_stralloc (struct target_ops *ops, enum target_object object,
2288 LONGEST i, transferred;
2290 transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1);
2291 bufstr = (char *) buffer;
2293 if (transferred < 0)
2296 if (transferred == 0)
2297 return xstrdup ("");
2299 bufstr[transferred] = 0;
2301 /* Check for embedded NUL bytes; but allow trailing NULs. */
2302 for (i = strlen (bufstr); i < transferred; i++)
2305 warning (_("target object %d, annex %s, "
2306 "contained unexpected null characters"),
2307 (int) object, annex ? annex : "(none)");
2314 /* Memory transfer methods. */
2317 get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf,
2320 /* This method is used to read from an alternate, non-current
2321 target. This read must bypass the overlay support (as symbols
2322 don't match this target), and GDB's internal cache (wrong cache
2323 for this target). */
2324 if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len)
2326 memory_error (TARGET_XFER_E_IO, addr);
2330 get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr,
2331 int len, enum bfd_endian byte_order)
2333 gdb_byte buf[sizeof (ULONGEST)];
2335 gdb_assert (len <= sizeof (buf));
2336 get_target_memory (ops, addr, buf, len);
2337 return extract_unsigned_integer (buf, len, byte_order);
2343 target_insert_breakpoint (struct gdbarch *gdbarch,
2344 struct bp_target_info *bp_tgt)
2346 if (!may_insert_breakpoints)
2348 warning (_("May not insert breakpoints"));
2352 return current_target.to_insert_breakpoint (¤t_target,
2359 target_remove_breakpoint (struct gdbarch *gdbarch,
2360 struct bp_target_info *bp_tgt)
2362 /* This is kind of a weird case to handle, but the permission might
2363 have been changed after breakpoints were inserted - in which case
2364 we should just take the user literally and assume that any
2365 breakpoints should be left in place. */
2366 if (!may_insert_breakpoints)
2368 warning (_("May not remove breakpoints"));
2372 return current_target.to_remove_breakpoint (¤t_target,
2377 target_info (char *args, int from_tty)
2379 struct target_ops *t;
2380 int has_all_mem = 0;
2382 if (symfile_objfile != NULL)
2383 printf_unfiltered (_("Symbols from \"%s\".\n"),
2384 objfile_name (symfile_objfile));
2386 for (t = target_stack; t != NULL; t = t->beneath)
2388 if (!(*t->to_has_memory) (t))
2391 if ((int) (t->to_stratum) <= (int) dummy_stratum)
2394 printf_unfiltered (_("\tWhile running this, "
2395 "GDB does not access memory from...\n"));
2396 printf_unfiltered ("%s:\n", t->to_longname);
2397 (t->to_files_info) (t);
2398 has_all_mem = (*t->to_has_all_memory) (t);
2402 /* This function is called before any new inferior is created, e.g.
2403 by running a program, attaching, or connecting to a target.
2404 It cleans up any state from previous invocations which might
2405 change between runs. This is a subset of what target_preopen
2406 resets (things which might change between targets). */
2409 target_pre_inferior (int from_tty)
2411 /* Clear out solib state. Otherwise the solib state of the previous
2412 inferior might have survived and is entirely wrong for the new
2413 target. This has been observed on GNU/Linux using glibc 2.3. How
2425 Cannot access memory at address 0xdeadbeef
2428 /* In some OSs, the shared library list is the same/global/shared
2429 across inferiors. If code is shared between processes, so are
2430 memory regions and features. */
2431 if (!gdbarch_has_global_solist (target_gdbarch ()))
2433 no_shared_libraries (NULL, from_tty);
2435 invalidate_target_mem_regions ();
2437 target_clear_description ();
2440 agent_capability_invalidate ();
2443 /* Callback for iterate_over_inferiors. Gets rid of the given
2447 dispose_inferior (struct inferior *inf, void *args)
2449 struct thread_info *thread;
2451 thread = any_thread_of_process (inf->pid);
2454 switch_to_thread (thread->ptid);
2456 /* Core inferiors actually should be detached, not killed. */
2457 if (target_has_execution)
2460 target_detach (NULL, 0);
2466 /* This is to be called by the open routine before it does
2470 target_preopen (int from_tty)
2474 if (have_inferiors ())
2477 || !have_live_inferiors ()
2478 || query (_("A program is being debugged already. Kill it? ")))
2479 iterate_over_inferiors (dispose_inferior, NULL);
2481 error (_("Program not killed."));
2484 /* Calling target_kill may remove the target from the stack. But if
2485 it doesn't (which seems like a win for UDI), remove it now. */
2486 /* Leave the exec target, though. The user may be switching from a
2487 live process to a core of the same program. */
2488 pop_all_targets_above (file_stratum);
2490 target_pre_inferior (from_tty);
2493 /* Detach a target after doing deferred register stores. */
2496 target_detach (const char *args, int from_tty)
2498 struct target_ops* t;
2500 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2501 /* Don't remove global breakpoints here. They're removed on
2502 disconnection from the target. */
2505 /* If we're in breakpoints-always-inserted mode, have to remove
2506 them before detaching. */
2507 remove_breakpoints_pid (ptid_get_pid (inferior_ptid));
2509 prepare_for_detach ();
2511 current_target.to_detach (¤t_target, args, from_tty);
2513 fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n",
2518 target_disconnect (char *args, int from_tty)
2520 struct target_ops *t;
2522 /* If we're in breakpoints-always-inserted mode or if breakpoints
2523 are global across processes, we have to remove them before
2525 remove_breakpoints ();
2527 for (t = current_target.beneath; t != NULL; t = t->beneath)
2528 if (t->to_disconnect != NULL)
2531 fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n",
2533 t->to_disconnect (t, args, from_tty);
2541 target_wait (ptid_t ptid, struct target_waitstatus *status, int options)
2543 struct target_ops *t;
2544 ptid_t retval = (current_target.to_wait) (¤t_target, ptid,
2549 char *status_string;
2550 char *options_string;
2552 status_string = target_waitstatus_to_string (status);
2553 options_string = target_options_to_string (options);
2554 fprintf_unfiltered (gdb_stdlog,
2555 "target_wait (%d, status, options={%s})"
2557 ptid_get_pid (ptid), options_string,
2558 ptid_get_pid (retval), status_string);
2559 xfree (status_string);
2560 xfree (options_string);
2567 target_pid_to_str (ptid_t ptid)
2569 struct target_ops *t;
2571 for (t = current_target.beneath; t != NULL; t = t->beneath)
2573 if (t->to_pid_to_str != NULL)
2574 return (*t->to_pid_to_str) (t, ptid);
2577 return normal_pid_to_str (ptid);
2581 target_thread_name (struct thread_info *info)
2583 return current_target.to_thread_name (¤t_target, info);
2587 target_resume (ptid_t ptid, int step, enum gdb_signal signal)
2589 struct target_ops *t;
2591 target_dcache_invalidate ();
2593 current_target.to_resume (¤t_target, ptid, step, signal);
2595 fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n",
2596 ptid_get_pid (ptid),
2597 step ? "step" : "continue",
2598 gdb_signal_to_name (signal));
2600 registers_changed_ptid (ptid);
2601 set_executing (ptid, 1);
2602 set_running (ptid, 1);
2603 clear_inline_frame_state (ptid);
2607 target_pass_signals (int numsigs, unsigned char *pass_signals)
2609 struct target_ops *t;
2611 for (t = current_target.beneath; t != NULL; t = t->beneath)
2613 if (t->to_pass_signals != NULL)
2619 fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {",
2622 for (i = 0; i < numsigs; i++)
2623 if (pass_signals[i])
2624 fprintf_unfiltered (gdb_stdlog, " %s",
2625 gdb_signal_to_name (i));
2627 fprintf_unfiltered (gdb_stdlog, " })\n");
2630 (*t->to_pass_signals) (t, numsigs, pass_signals);
2637 target_program_signals (int numsigs, unsigned char *program_signals)
2639 struct target_ops *t;
2641 for (t = current_target.beneath; t != NULL; t = t->beneath)
2643 if (t->to_program_signals != NULL)
2649 fprintf_unfiltered (gdb_stdlog, "target_program_signals (%d, {",
2652 for (i = 0; i < numsigs; i++)
2653 if (program_signals[i])
2654 fprintf_unfiltered (gdb_stdlog, " %s",
2655 gdb_signal_to_name (i));
2657 fprintf_unfiltered (gdb_stdlog, " })\n");
2660 (*t->to_program_signals) (t, numsigs, program_signals);
2666 /* Look through the list of possible targets for a target that can
2670 target_follow_fork (int follow_child, int detach_fork)
2672 struct target_ops *t;
2674 for (t = current_target.beneath; t != NULL; t = t->beneath)
2676 if (t->to_follow_fork != NULL)
2678 int retval = t->to_follow_fork (t, follow_child, detach_fork);
2681 fprintf_unfiltered (gdb_stdlog,
2682 "target_follow_fork (%d, %d) = %d\n",
2683 follow_child, detach_fork, retval);
2688 /* Some target returned a fork event, but did not know how to follow it. */
2689 internal_error (__FILE__, __LINE__,
2690 _("could not find a target to follow fork"));
2694 target_mourn_inferior (void)
2696 struct target_ops *t;
2698 for (t = current_target.beneath; t != NULL; t = t->beneath)
2700 if (t->to_mourn_inferior != NULL)
2702 t->to_mourn_inferior (t);
2704 fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n");
2706 /* We no longer need to keep handles on any of the object files.
2707 Make sure to release them to avoid unnecessarily locking any
2708 of them while we're not actually debugging. */
2709 bfd_cache_close_all ();
2715 internal_error (__FILE__, __LINE__,
2716 _("could not find a target to follow mourn inferior"));
2719 /* Look for a target which can describe architectural features, starting
2720 from TARGET. If we find one, return its description. */
2722 const struct target_desc *
2723 target_read_description (struct target_ops *target)
2725 struct target_ops *t;
2727 for (t = target; t != NULL; t = t->beneath)
2728 if (t->to_read_description != NULL)
2730 const struct target_desc *tdesc;
2732 tdesc = t->to_read_description (t);
2740 /* The default implementation of to_search_memory.
2741 This implements a basic search of memory, reading target memory and
2742 performing the search here (as opposed to performing the search in on the
2743 target side with, for example, gdbserver). */
2746 simple_search_memory (struct target_ops *ops,
2747 CORE_ADDR start_addr, ULONGEST search_space_len,
2748 const gdb_byte *pattern, ULONGEST pattern_len,
2749 CORE_ADDR *found_addrp)
2751 /* NOTE: also defined in find.c testcase. */
2752 #define SEARCH_CHUNK_SIZE 16000
2753 const unsigned chunk_size = SEARCH_CHUNK_SIZE;
2754 /* Buffer to hold memory contents for searching. */
2755 gdb_byte *search_buf;
2756 unsigned search_buf_size;
2757 struct cleanup *old_cleanups;
2759 search_buf_size = chunk_size + pattern_len - 1;
2761 /* No point in trying to allocate a buffer larger than the search space. */
2762 if (search_space_len < search_buf_size)
2763 search_buf_size = search_space_len;
2765 search_buf = malloc (search_buf_size);
2766 if (search_buf == NULL)
2767 error (_("Unable to allocate memory to perform the search."));
2768 old_cleanups = make_cleanup (free_current_contents, &search_buf);
2770 /* Prime the search buffer. */
2772 if (target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2773 search_buf, start_addr, search_buf_size) != search_buf_size)
2775 warning (_("Unable to access %s bytes of target "
2776 "memory at %s, halting search."),
2777 pulongest (search_buf_size), hex_string (start_addr));
2778 do_cleanups (old_cleanups);
2782 /* Perform the search.
2784 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2785 When we've scanned N bytes we copy the trailing bytes to the start and
2786 read in another N bytes. */
2788 while (search_space_len >= pattern_len)
2790 gdb_byte *found_ptr;
2791 unsigned nr_search_bytes = min (search_space_len, search_buf_size);
2793 found_ptr = memmem (search_buf, nr_search_bytes,
2794 pattern, pattern_len);
2796 if (found_ptr != NULL)
2798 CORE_ADDR found_addr = start_addr + (found_ptr - search_buf);
2800 *found_addrp = found_addr;
2801 do_cleanups (old_cleanups);
2805 /* Not found in this chunk, skip to next chunk. */
2807 /* Don't let search_space_len wrap here, it's unsigned. */
2808 if (search_space_len >= chunk_size)
2809 search_space_len -= chunk_size;
2811 search_space_len = 0;
2813 if (search_space_len >= pattern_len)
2815 unsigned keep_len = search_buf_size - chunk_size;
2816 CORE_ADDR read_addr = start_addr + chunk_size + keep_len;
2819 /* Copy the trailing part of the previous iteration to the front
2820 of the buffer for the next iteration. */
2821 gdb_assert (keep_len == pattern_len - 1);
2822 memcpy (search_buf, search_buf + chunk_size, keep_len);
2824 nr_to_read = min (search_space_len - keep_len, chunk_size);
2826 if (target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2827 search_buf + keep_len, read_addr,
2828 nr_to_read) != nr_to_read)
2830 warning (_("Unable to access %s bytes of target "
2831 "memory at %s, halting search."),
2832 plongest (nr_to_read),
2833 hex_string (read_addr));
2834 do_cleanups (old_cleanups);
2838 start_addr += chunk_size;
2844 do_cleanups (old_cleanups);
2848 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2849 sequence of bytes in PATTERN with length PATTERN_LEN.
2851 The result is 1 if found, 0 if not found, and -1 if there was an error
2852 requiring halting of the search (e.g. memory read error).
2853 If the pattern is found the address is recorded in FOUND_ADDRP. */
2856 target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len,
2857 const gdb_byte *pattern, ULONGEST pattern_len,
2858 CORE_ADDR *found_addrp)
2860 struct target_ops *t;
2863 /* We don't use INHERIT to set current_target.to_search_memory,
2864 so we have to scan the target stack and handle targetdebug
2868 fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n",
2869 hex_string (start_addr));
2871 for (t = current_target.beneath; t != NULL; t = t->beneath)
2872 if (t->to_search_memory != NULL)
2877 found = t->to_search_memory (t, start_addr, search_space_len,
2878 pattern, pattern_len, found_addrp);
2882 /* If a special version of to_search_memory isn't available, use the
2884 found = simple_search_memory (current_target.beneath,
2885 start_addr, search_space_len,
2886 pattern, pattern_len, found_addrp);
2890 fprintf_unfiltered (gdb_stdlog, " = %d\n", found);
2895 /* Look through the currently pushed targets. If none of them will
2896 be able to restart the currently running process, issue an error
2900 target_require_runnable (void)
2902 struct target_ops *t;
2904 for (t = target_stack; t != NULL; t = t->beneath)
2906 /* If this target knows how to create a new program, then
2907 assume we will still be able to after killing the current
2908 one. Either killing and mourning will not pop T, or else
2909 find_default_run_target will find it again. */
2910 if (t->to_create_inferior != NULL)
2913 /* Do not worry about thread_stratum targets that can not
2914 create inferiors. Assume they will be pushed again if
2915 necessary, and continue to the process_stratum. */
2916 if (t->to_stratum == thread_stratum
2917 || t->to_stratum == arch_stratum)
2920 error (_("The \"%s\" target does not support \"run\". "
2921 "Try \"help target\" or \"continue\"."),
2925 /* This function is only called if the target is running. In that
2926 case there should have been a process_stratum target and it
2927 should either know how to create inferiors, or not... */
2928 internal_error (__FILE__, __LINE__, _("No targets found"));
2931 /* Look through the list of possible targets for a target that can
2932 execute a run or attach command without any other data. This is
2933 used to locate the default process stratum.
2935 If DO_MESG is not NULL, the result is always valid (error() is
2936 called for errors); else, return NULL on error. */
2938 static struct target_ops *
2939 find_default_run_target (char *do_mesg)
2941 struct target_ops **t;
2942 struct target_ops *runable = NULL;
2947 for (t = target_structs; t < target_structs + target_struct_size;
2950 if ((*t)->to_can_run && target_can_run (*t))
2960 error (_("Don't know how to %s. Try \"help target\"."), do_mesg);
2969 find_default_attach (struct target_ops *ops, char *args, int from_tty)
2971 struct target_ops *t;
2973 t = find_default_run_target ("attach");
2974 (t->to_attach) (t, args, from_tty);
2979 find_default_create_inferior (struct target_ops *ops,
2980 char *exec_file, char *allargs, char **env,
2983 struct target_ops *t;
2985 t = find_default_run_target ("run");
2986 (t->to_create_inferior) (t, exec_file, allargs, env, from_tty);
2991 find_default_can_async_p (struct target_ops *ignore)
2993 struct target_ops *t;
2995 /* This may be called before the target is pushed on the stack;
2996 look for the default process stratum. If there's none, gdb isn't
2997 configured with a native debugger, and target remote isn't
2999 t = find_default_run_target (NULL);
3000 if (t && t->to_can_async_p != delegate_can_async_p)
3001 return (t->to_can_async_p) (t);
3006 find_default_is_async_p (struct target_ops *ignore)
3008 struct target_ops *t;
3010 /* This may be called before the target is pushed on the stack;
3011 look for the default process stratum. If there's none, gdb isn't
3012 configured with a native debugger, and target remote isn't
3014 t = find_default_run_target (NULL);
3015 if (t && t->to_is_async_p != delegate_is_async_p)
3016 return (t->to_is_async_p) (t);
3021 find_default_supports_non_stop (struct target_ops *self)
3023 struct target_ops *t;
3025 t = find_default_run_target (NULL);
3026 if (t && t->to_supports_non_stop)
3027 return (t->to_supports_non_stop) (t);
3032 target_supports_non_stop (void)
3034 struct target_ops *t;
3036 for (t = ¤t_target; t != NULL; t = t->beneath)
3037 if (t->to_supports_non_stop)
3038 return t->to_supports_non_stop (t);
3043 /* Implement the "info proc" command. */
3046 target_info_proc (char *args, enum info_proc_what what)
3048 struct target_ops *t;
3050 /* If we're already connected to something that can get us OS
3051 related data, use it. Otherwise, try using the native
3053 if (current_target.to_stratum >= process_stratum)
3054 t = current_target.beneath;
3056 t = find_default_run_target (NULL);
3058 for (; t != NULL; t = t->beneath)
3060 if (t->to_info_proc != NULL)
3062 t->to_info_proc (t, args, what);
3065 fprintf_unfiltered (gdb_stdlog,
3066 "target_info_proc (\"%s\", %d)\n", args, what);
3076 find_default_supports_disable_randomization (struct target_ops *self)
3078 struct target_ops *t;
3080 t = find_default_run_target (NULL);
3081 if (t && t->to_supports_disable_randomization)
3082 return (t->to_supports_disable_randomization) (t);
3087 target_supports_disable_randomization (void)
3089 struct target_ops *t;
3091 for (t = ¤t_target; t != NULL; t = t->beneath)
3092 if (t->to_supports_disable_randomization)
3093 return t->to_supports_disable_randomization (t);
3099 target_get_osdata (const char *type)
3101 struct target_ops *t;
3103 /* If we're already connected to something that can get us OS
3104 related data, use it. Otherwise, try using the native
3106 if (current_target.to_stratum >= process_stratum)
3107 t = current_target.beneath;
3109 t = find_default_run_target ("get OS data");
3114 return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type);
3117 /* Determine the current address space of thread PTID. */
3119 struct address_space *
3120 target_thread_address_space (ptid_t ptid)
3122 struct address_space *aspace;
3123 struct inferior *inf;
3124 struct target_ops *t;
3126 for (t = current_target.beneath; t != NULL; t = t->beneath)
3128 if (t->to_thread_address_space != NULL)
3130 aspace = t->to_thread_address_space (t, ptid);
3131 gdb_assert (aspace);
3134 fprintf_unfiltered (gdb_stdlog,
3135 "target_thread_address_space (%s) = %d\n",
3136 target_pid_to_str (ptid),
3137 address_space_num (aspace));
3142 /* Fall-back to the "main" address space of the inferior. */
3143 inf = find_inferior_pid (ptid_get_pid (ptid));
3145 if (inf == NULL || inf->aspace == NULL)
3146 internal_error (__FILE__, __LINE__,
3147 _("Can't determine the current "
3148 "address space of thread %s\n"),
3149 target_pid_to_str (ptid));
3155 /* Target file operations. */
3157 static struct target_ops *
3158 default_fileio_target (void)
3160 /* If we're already connected to something that can perform
3161 file I/O, use it. Otherwise, try using the native target. */
3162 if (current_target.to_stratum >= process_stratum)
3163 return current_target.beneath;
3165 return find_default_run_target ("file I/O");
3168 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3169 target file descriptor, or -1 if an error occurs (and set
3172 target_fileio_open (const char *filename, int flags, int mode,
3175 struct target_ops *t;
3177 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3179 if (t->to_fileio_open != NULL)
3181 int fd = t->to_fileio_open (t, filename, flags, mode, target_errno);
3184 fprintf_unfiltered (gdb_stdlog,
3185 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3186 filename, flags, mode,
3187 fd, fd != -1 ? 0 : *target_errno);
3192 *target_errno = FILEIO_ENOSYS;
3196 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3197 Return the number of bytes written, or -1 if an error occurs
3198 (and set *TARGET_ERRNO). */
3200 target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len,
3201 ULONGEST offset, int *target_errno)
3203 struct target_ops *t;
3205 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3207 if (t->to_fileio_pwrite != NULL)
3209 int ret = t->to_fileio_pwrite (t, fd, write_buf, len, offset,
3213 fprintf_unfiltered (gdb_stdlog,
3214 "target_fileio_pwrite (%d,...,%d,%s) "
3216 fd, len, pulongest (offset),
3217 ret, ret != -1 ? 0 : *target_errno);
3222 *target_errno = FILEIO_ENOSYS;
3226 /* Read up to LEN bytes FD on the target into READ_BUF.
3227 Return the number of bytes read, or -1 if an error occurs
3228 (and set *TARGET_ERRNO). */
3230 target_fileio_pread (int fd, gdb_byte *read_buf, int len,
3231 ULONGEST offset, int *target_errno)
3233 struct target_ops *t;
3235 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3237 if (t->to_fileio_pread != NULL)
3239 int ret = t->to_fileio_pread (t, fd, read_buf, len, offset,
3243 fprintf_unfiltered (gdb_stdlog,
3244 "target_fileio_pread (%d,...,%d,%s) "
3246 fd, len, pulongest (offset),
3247 ret, ret != -1 ? 0 : *target_errno);
3252 *target_errno = FILEIO_ENOSYS;
3256 /* Close FD on the target. Return 0, or -1 if an error occurs
3257 (and set *TARGET_ERRNO). */
3259 target_fileio_close (int fd, int *target_errno)
3261 struct target_ops *t;
3263 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3265 if (t->to_fileio_close != NULL)
3267 int ret = t->to_fileio_close (t, fd, target_errno);
3270 fprintf_unfiltered (gdb_stdlog,
3271 "target_fileio_close (%d) = %d (%d)\n",
3272 fd, ret, ret != -1 ? 0 : *target_errno);
3277 *target_errno = FILEIO_ENOSYS;
3281 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3282 occurs (and set *TARGET_ERRNO). */
3284 target_fileio_unlink (const char *filename, int *target_errno)
3286 struct target_ops *t;
3288 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3290 if (t->to_fileio_unlink != NULL)
3292 int ret = t->to_fileio_unlink (t, filename, target_errno);
3295 fprintf_unfiltered (gdb_stdlog,
3296 "target_fileio_unlink (%s) = %d (%d)\n",
3297 filename, ret, ret != -1 ? 0 : *target_errno);
3302 *target_errno = FILEIO_ENOSYS;
3306 /* Read value of symbolic link FILENAME on the target. Return a
3307 null-terminated string allocated via xmalloc, or NULL if an error
3308 occurs (and set *TARGET_ERRNO). */
3310 target_fileio_readlink (const char *filename, int *target_errno)
3312 struct target_ops *t;
3314 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3316 if (t->to_fileio_readlink != NULL)
3318 char *ret = t->to_fileio_readlink (t, filename, target_errno);
3321 fprintf_unfiltered (gdb_stdlog,
3322 "target_fileio_readlink (%s) = %s (%d)\n",
3323 filename, ret? ret : "(nil)",
3324 ret? 0 : *target_errno);
3329 *target_errno = FILEIO_ENOSYS;
3334 target_fileio_close_cleanup (void *opaque)
3336 int fd = *(int *) opaque;
3339 target_fileio_close (fd, &target_errno);
3342 /* Read target file FILENAME. Store the result in *BUF_P and
3343 return the size of the transferred data. PADDING additional bytes are
3344 available in *BUF_P. This is a helper function for
3345 target_fileio_read_alloc; see the declaration of that function for more
3349 target_fileio_read_alloc_1 (const char *filename,
3350 gdb_byte **buf_p, int padding)
3352 struct cleanup *close_cleanup;
3353 size_t buf_alloc, buf_pos;
3359 fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno);
3363 close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd);
3365 /* Start by reading up to 4K at a time. The target will throttle
3366 this number down if necessary. */
3368 buf = xmalloc (buf_alloc);
3372 n = target_fileio_pread (fd, &buf[buf_pos],
3373 buf_alloc - buf_pos - padding, buf_pos,
3377 /* An error occurred. */
3378 do_cleanups (close_cleanup);
3384 /* Read all there was. */
3385 do_cleanups (close_cleanup);
3395 /* If the buffer is filling up, expand it. */
3396 if (buf_alloc < buf_pos * 2)
3399 buf = xrealloc (buf, buf_alloc);
3406 /* Read target file FILENAME. Store the result in *BUF_P and return
3407 the size of the transferred data. See the declaration in "target.h"
3408 function for more information about the return value. */
3411 target_fileio_read_alloc (const char *filename, gdb_byte **buf_p)
3413 return target_fileio_read_alloc_1 (filename, buf_p, 0);
3416 /* Read target file FILENAME. The result is NUL-terminated and
3417 returned as a string, allocated using xmalloc. If an error occurs
3418 or the transfer is unsupported, NULL is returned. Empty objects
3419 are returned as allocated but empty strings. A warning is issued
3420 if the result contains any embedded NUL bytes. */
3423 target_fileio_read_stralloc (const char *filename)
3427 LONGEST i, transferred;
3429 transferred = target_fileio_read_alloc_1 (filename, &buffer, 1);
3430 bufstr = (char *) buffer;
3432 if (transferred < 0)
3435 if (transferred == 0)
3436 return xstrdup ("");
3438 bufstr[transferred] = 0;
3440 /* Check for embedded NUL bytes; but allow trailing NULs. */
3441 for (i = strlen (bufstr); i < transferred; i++)
3444 warning (_("target file %s "
3445 "contained unexpected null characters"),
3455 default_region_ok_for_hw_watchpoint (struct target_ops *self,
3456 CORE_ADDR addr, int len)
3458 return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT);
3462 default_watchpoint_addr_within_range (struct target_ops *target,
3464 CORE_ADDR start, int length)
3466 return addr >= start && addr < start + length;
3469 static struct gdbarch *
3470 default_thread_architecture (struct target_ops *ops, ptid_t ptid)
3472 return target_gdbarch ();
3488 * Find the next target down the stack from the specified target.
3492 find_target_beneath (struct target_ops *t)
3500 find_target_at (enum strata stratum)
3502 struct target_ops *t;
3504 for (t = current_target.beneath; t != NULL; t = t->beneath)
3505 if (t->to_stratum == stratum)
3512 /* The inferior process has died. Long live the inferior! */
3515 generic_mourn_inferior (void)
3519 ptid = inferior_ptid;
3520 inferior_ptid = null_ptid;
3522 /* Mark breakpoints uninserted in case something tries to delete a
3523 breakpoint while we delete the inferior's threads (which would
3524 fail, since the inferior is long gone). */
3525 mark_breakpoints_out ();
3527 if (!ptid_equal (ptid, null_ptid))
3529 int pid = ptid_get_pid (ptid);
3530 exit_inferior (pid);
3533 /* Note this wipes step-resume breakpoints, so needs to be done
3534 after exit_inferior, which ends up referencing the step-resume
3535 breakpoints through clear_thread_inferior_resources. */
3536 breakpoint_init_inferior (inf_exited);
3538 registers_changed ();
3540 reopen_exec_file ();
3541 reinit_frame_cache ();
3543 if (deprecated_detach_hook)
3544 deprecated_detach_hook ();
3547 /* Convert a normal process ID to a string. Returns the string in a
3551 normal_pid_to_str (ptid_t ptid)
3553 static char buf[32];
3555 xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid));
3560 dummy_pid_to_str (struct target_ops *ops, ptid_t ptid)
3562 return normal_pid_to_str (ptid);
3565 /* Error-catcher for target_find_memory_regions. */
3567 dummy_find_memory_regions (struct target_ops *self,
3568 find_memory_region_ftype ignore1, void *ignore2)
3570 error (_("Command not implemented for this target."));
3574 /* Error-catcher for target_make_corefile_notes. */
3576 dummy_make_corefile_notes (struct target_ops *self,
3577 bfd *ignore1, int *ignore2)
3579 error (_("Command not implemented for this target."));
3583 /* Set up the handful of non-empty slots needed by the dummy target
3587 init_dummy_target (void)
3589 dummy_target.to_shortname = "None";
3590 dummy_target.to_longname = "None";
3591 dummy_target.to_doc = "";
3592 dummy_target.to_create_inferior = find_default_create_inferior;
3593 dummy_target.to_supports_non_stop = find_default_supports_non_stop;
3594 dummy_target.to_supports_disable_randomization
3595 = find_default_supports_disable_randomization;
3596 dummy_target.to_pid_to_str = dummy_pid_to_str;
3597 dummy_target.to_stratum = dummy_stratum;
3598 dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero;
3599 dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero;
3600 dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero;
3601 dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero;
3602 dummy_target.to_has_execution
3603 = (int (*) (struct target_ops *, ptid_t)) return_zero;
3604 dummy_target.to_magic = OPS_MAGIC;
3606 install_dummy_methods (&dummy_target);
3610 debug_to_open (char *args, int from_tty)
3612 debug_target.to_open (args, from_tty);
3614 fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty);
3618 target_close (struct target_ops *targ)
3620 gdb_assert (!target_is_pushed (targ));
3622 if (targ->to_xclose != NULL)
3623 targ->to_xclose (targ);
3624 else if (targ->to_close != NULL)
3625 targ->to_close (targ);
3628 fprintf_unfiltered (gdb_stdlog, "target_close ()\n");
3632 target_attach (char *args, int from_tty)
3634 current_target.to_attach (¤t_target, args, from_tty);
3636 fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n",
3641 target_thread_alive (ptid_t ptid)
3643 struct target_ops *t;
3645 for (t = current_target.beneath; t != NULL; t = t->beneath)
3647 if (t->to_thread_alive != NULL)
3651 retval = t->to_thread_alive (t, ptid);
3653 fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n",
3654 ptid_get_pid (ptid), retval);
3664 target_find_new_threads (void)
3666 struct target_ops *t;
3668 for (t = current_target.beneath; t != NULL; t = t->beneath)
3670 if (t->to_find_new_threads != NULL)
3672 t->to_find_new_threads (t);
3674 fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n");
3682 target_stop (ptid_t ptid)
3686 warning (_("May not interrupt or stop the target, ignoring attempt"));
3690 (*current_target.to_stop) (¤t_target, ptid);
3694 debug_to_post_attach (struct target_ops *self, int pid)
3696 debug_target.to_post_attach (&debug_target, pid);
3698 fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid);
3701 /* Concatenate ELEM to LIST, a comma separate list, and return the
3702 result. The LIST incoming argument is released. */
3705 str_comma_list_concat_elem (char *list, const char *elem)
3708 return xstrdup (elem);
3710 return reconcat (list, list, ", ", elem, (char *) NULL);
3713 /* Helper for target_options_to_string. If OPT is present in
3714 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3715 Returns the new resulting string. OPT is removed from
3719 do_option (int *target_options, char *ret,
3720 int opt, char *opt_str)
3722 if ((*target_options & opt) != 0)
3724 ret = str_comma_list_concat_elem (ret, opt_str);
3725 *target_options &= ~opt;
3732 target_options_to_string (int target_options)
3736 #define DO_TARG_OPTION(OPT) \
3737 ret = do_option (&target_options, ret, OPT, #OPT)
3739 DO_TARG_OPTION (TARGET_WNOHANG);
3741 if (target_options != 0)
3742 ret = str_comma_list_concat_elem (ret, "unknown???");
3750 debug_print_register (const char * func,
3751 struct regcache *regcache, int regno)
3753 struct gdbarch *gdbarch = get_regcache_arch (regcache);
3755 fprintf_unfiltered (gdb_stdlog, "%s ", func);
3756 if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)
3757 && gdbarch_register_name (gdbarch, regno) != NULL
3758 && gdbarch_register_name (gdbarch, regno)[0] != '\0')
3759 fprintf_unfiltered (gdb_stdlog, "(%s)",
3760 gdbarch_register_name (gdbarch, regno));
3762 fprintf_unfiltered (gdb_stdlog, "(%d)", regno);
3763 if (regno >= 0 && regno < gdbarch_num_regs (gdbarch))
3765 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
3766 int i, size = register_size (gdbarch, regno);
3767 gdb_byte buf[MAX_REGISTER_SIZE];
3769 regcache_raw_collect (regcache, regno, buf);
3770 fprintf_unfiltered (gdb_stdlog, " = ");
3771 for (i = 0; i < size; i++)
3773 fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]);
3775 if (size <= sizeof (LONGEST))
3777 ULONGEST val = extract_unsigned_integer (buf, size, byte_order);
3779 fprintf_unfiltered (gdb_stdlog, " %s %s",
3780 core_addr_to_string_nz (val), plongest (val));
3783 fprintf_unfiltered (gdb_stdlog, "\n");
3787 target_fetch_registers (struct regcache *regcache, int regno)
3789 struct target_ops *t;
3791 for (t = current_target.beneath; t != NULL; t = t->beneath)
3793 if (t->to_fetch_registers != NULL)
3795 t->to_fetch_registers (t, regcache, regno);
3797 debug_print_register ("target_fetch_registers", regcache, regno);
3804 target_store_registers (struct regcache *regcache, int regno)
3806 struct target_ops *t;
3808 if (!may_write_registers)
3809 error (_("Writing to registers is not allowed (regno %d)"), regno);
3811 current_target.to_store_registers (¤t_target, regcache, regno);
3814 debug_print_register ("target_store_registers", regcache, regno);
3819 target_core_of_thread (ptid_t ptid)
3821 struct target_ops *t;
3823 for (t = current_target.beneath; t != NULL; t = t->beneath)
3825 if (t->to_core_of_thread != NULL)
3827 int retval = t->to_core_of_thread (t, ptid);
3830 fprintf_unfiltered (gdb_stdlog,
3831 "target_core_of_thread (%d) = %d\n",
3832 ptid_get_pid (ptid), retval);
3841 target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size)
3843 struct target_ops *t;
3845 for (t = current_target.beneath; t != NULL; t = t->beneath)
3847 if (t->to_verify_memory != NULL)
3849 int retval = t->to_verify_memory (t, data, memaddr, size);
3852 fprintf_unfiltered (gdb_stdlog,
3853 "target_verify_memory (%s, %s) = %d\n",
3854 paddress (target_gdbarch (), memaddr),
3864 /* The documentation for this function is in its prototype declaration in
3868 target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw)
3870 struct target_ops *t;
3872 for (t = current_target.beneath; t != NULL; t = t->beneath)
3873 if (t->to_insert_mask_watchpoint != NULL)
3877 ret = t->to_insert_mask_watchpoint (t, addr, mask, rw);
3880 fprintf_unfiltered (gdb_stdlog, "\
3881 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3882 core_addr_to_string (addr),
3883 core_addr_to_string (mask), rw, ret);
3891 /* The documentation for this function is in its prototype declaration in
3895 target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw)
3897 struct target_ops *t;
3899 for (t = current_target.beneath; t != NULL; t = t->beneath)
3900 if (t->to_remove_mask_watchpoint != NULL)
3904 ret = t->to_remove_mask_watchpoint (t, addr, mask, rw);
3907 fprintf_unfiltered (gdb_stdlog, "\
3908 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3909 core_addr_to_string (addr),
3910 core_addr_to_string (mask), rw, ret);
3918 /* The documentation for this function is in its prototype declaration
3922 target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask)
3924 struct target_ops *t;
3926 for (t = current_target.beneath; t != NULL; t = t->beneath)
3927 if (t->to_masked_watch_num_registers != NULL)
3928 return t->to_masked_watch_num_registers (t, addr, mask);
3933 /* The documentation for this function is in its prototype declaration
3937 target_ranged_break_num_registers (void)
3939 struct target_ops *t;
3941 for (t = current_target.beneath; t != NULL; t = t->beneath)
3942 if (t->to_ranged_break_num_registers != NULL)
3943 return t->to_ranged_break_num_registers (t);
3950 struct btrace_target_info *
3951 target_enable_btrace (ptid_t ptid)
3953 struct target_ops *t;
3955 for (t = current_target.beneath; t != NULL; t = t->beneath)
3956 if (t->to_enable_btrace != NULL)
3957 return t->to_enable_btrace (t, ptid);
3966 target_disable_btrace (struct btrace_target_info *btinfo)
3968 struct target_ops *t;
3970 for (t = current_target.beneath; t != NULL; t = t->beneath)
3971 if (t->to_disable_btrace != NULL)
3973 t->to_disable_btrace (t, btinfo);
3983 target_teardown_btrace (struct btrace_target_info *btinfo)
3985 struct target_ops *t;
3987 for (t = current_target.beneath; t != NULL; t = t->beneath)
3988 if (t->to_teardown_btrace != NULL)
3990 t->to_teardown_btrace (t, btinfo);
4000 target_read_btrace (VEC (btrace_block_s) **btrace,
4001 struct btrace_target_info *btinfo,
4002 enum btrace_read_type type)
4004 struct target_ops *t;
4006 for (t = current_target.beneath; t != NULL; t = t->beneath)
4007 if (t->to_read_btrace != NULL)
4008 return t->to_read_btrace (t, btrace, btinfo, type);
4011 return BTRACE_ERR_NOT_SUPPORTED;
4017 target_stop_recording (void)
4019 struct target_ops *t;
4021 for (t = current_target.beneath; t != NULL; t = t->beneath)
4022 if (t->to_stop_recording != NULL)
4024 t->to_stop_recording (t);
4028 /* This is optional. */
4034 target_info_record (void)
4036 struct target_ops *t;
4038 for (t = current_target.beneath; t != NULL; t = t->beneath)
4039 if (t->to_info_record != NULL)
4041 t->to_info_record (t);
4051 target_save_record (const char *filename)
4053 struct target_ops *t;
4055 for (t = current_target.beneath; t != NULL; t = t->beneath)
4056 if (t->to_save_record != NULL)
4058 t->to_save_record (t, filename);
4068 target_supports_delete_record (void)
4070 struct target_ops *t;
4072 for (t = current_target.beneath; t != NULL; t = t->beneath)
4073 if (t->to_delete_record != NULL)
4082 target_delete_record (void)
4084 struct target_ops *t;
4086 for (t = current_target.beneath; t != NULL; t = t->beneath)
4087 if (t->to_delete_record != NULL)
4089 t->to_delete_record (t);
4099 target_record_is_replaying (void)
4101 struct target_ops *t;
4103 for (t = current_target.beneath; t != NULL; t = t->beneath)
4104 if (t->to_record_is_replaying != NULL)
4105 return t->to_record_is_replaying (t);
4113 target_goto_record_begin (void)
4115 struct target_ops *t;
4117 for (t = current_target.beneath; t != NULL; t = t->beneath)
4118 if (t->to_goto_record_begin != NULL)
4120 t->to_goto_record_begin (t);
4130 target_goto_record_end (void)
4132 struct target_ops *t;
4134 for (t = current_target.beneath; t != NULL; t = t->beneath)
4135 if (t->to_goto_record_end != NULL)
4137 t->to_goto_record_end (t);
4147 target_goto_record (ULONGEST insn)
4149 struct target_ops *t;
4151 for (t = current_target.beneath; t != NULL; t = t->beneath)
4152 if (t->to_goto_record != NULL)
4154 t->to_goto_record (t, insn);
4164 target_insn_history (int size, int flags)
4166 struct target_ops *t;
4168 for (t = current_target.beneath; t != NULL; t = t->beneath)
4169 if (t->to_insn_history != NULL)
4171 t->to_insn_history (t, size, flags);
4181 target_insn_history_from (ULONGEST from, int size, int flags)
4183 struct target_ops *t;
4185 for (t = current_target.beneath; t != NULL; t = t->beneath)
4186 if (t->to_insn_history_from != NULL)
4188 t->to_insn_history_from (t, from, size, flags);
4198 target_insn_history_range (ULONGEST begin, ULONGEST end, int flags)
4200 struct target_ops *t;
4202 for (t = current_target.beneath; t != NULL; t = t->beneath)
4203 if (t->to_insn_history_range != NULL)
4205 t->to_insn_history_range (t, begin, end, flags);
4215 target_call_history (int size, int flags)
4217 struct target_ops *t;
4219 for (t = current_target.beneath; t != NULL; t = t->beneath)
4220 if (t->to_call_history != NULL)
4222 t->to_call_history (t, size, flags);
4232 target_call_history_from (ULONGEST begin, int size, int flags)
4234 struct target_ops *t;
4236 for (t = current_target.beneath; t != NULL; t = t->beneath)
4237 if (t->to_call_history_from != NULL)
4239 t->to_call_history_from (t, begin, size, flags);
4249 target_call_history_range (ULONGEST begin, ULONGEST end, int flags)
4251 struct target_ops *t;
4253 for (t = current_target.beneath; t != NULL; t = t->beneath)
4254 if (t->to_call_history_range != NULL)
4256 t->to_call_history_range (t, begin, end, flags);
4264 debug_to_prepare_to_store (struct target_ops *self, struct regcache *regcache)
4266 debug_target.to_prepare_to_store (&debug_target, regcache);
4268 fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n");
4273 const struct frame_unwind *
4274 target_get_unwinder (void)
4276 struct target_ops *t;
4278 for (t = current_target.beneath; t != NULL; t = t->beneath)
4279 if (t->to_get_unwinder != NULL)
4280 return t->to_get_unwinder;
4287 const struct frame_unwind *
4288 target_get_tailcall_unwinder (void)
4290 struct target_ops *t;
4292 for (t = current_target.beneath; t != NULL; t = t->beneath)
4293 if (t->to_get_tailcall_unwinder != NULL)
4294 return t->to_get_tailcall_unwinder;
4302 forward_target_decr_pc_after_break (struct target_ops *ops,
4303 struct gdbarch *gdbarch)
4305 for (; ops != NULL; ops = ops->beneath)
4306 if (ops->to_decr_pc_after_break != NULL)
4307 return ops->to_decr_pc_after_break (ops, gdbarch);
4309 return gdbarch_decr_pc_after_break (gdbarch);
4315 target_decr_pc_after_break (struct gdbarch *gdbarch)
4317 return forward_target_decr_pc_after_break (current_target.beneath, gdbarch);
4321 deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len,
4322 int write, struct mem_attrib *attrib,
4323 struct target_ops *target)
4327 retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write,
4330 fprintf_unfiltered (gdb_stdlog,
4331 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4332 paddress (target_gdbarch (), memaddr), len,
4333 write ? "write" : "read", retval);
4339 fputs_unfiltered (", bytes =", gdb_stdlog);
4340 for (i = 0; i < retval; i++)
4342 if ((((intptr_t) &(myaddr[i])) & 0xf) == 0)
4344 if (targetdebug < 2 && i > 0)
4346 fprintf_unfiltered (gdb_stdlog, " ...");
4349 fprintf_unfiltered (gdb_stdlog, "\n");
4352 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
4356 fputc_unfiltered ('\n', gdb_stdlog);
4362 debug_to_files_info (struct target_ops *target)
4364 debug_target.to_files_info (target);
4366 fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n");
4370 debug_to_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch,
4371 struct bp_target_info *bp_tgt)
4375 retval = debug_target.to_insert_breakpoint (&debug_target, gdbarch, bp_tgt);
4377 fprintf_unfiltered (gdb_stdlog,
4378 "target_insert_breakpoint (%s, xxx) = %ld\n",
4379 core_addr_to_string (bp_tgt->placed_address),
4380 (unsigned long) retval);
4385 debug_to_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch,
4386 struct bp_target_info *bp_tgt)
4390 retval = debug_target.to_remove_breakpoint (&debug_target, gdbarch, bp_tgt);
4392 fprintf_unfiltered (gdb_stdlog,
4393 "target_remove_breakpoint (%s, xxx) = %ld\n",
4394 core_addr_to_string (bp_tgt->placed_address),
4395 (unsigned long) retval);
4400 debug_to_can_use_hw_breakpoint (struct target_ops *self,
4401 int type, int cnt, int from_tty)
4405 retval = debug_target.to_can_use_hw_breakpoint (&debug_target,
4406 type, cnt, from_tty);
4408 fprintf_unfiltered (gdb_stdlog,
4409 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4410 (unsigned long) type,
4411 (unsigned long) cnt,
4412 (unsigned long) from_tty,
4413 (unsigned long) retval);
4418 debug_to_region_ok_for_hw_watchpoint (struct target_ops *self,
4419 CORE_ADDR addr, int len)
4423 retval = debug_target.to_region_ok_for_hw_watchpoint (&debug_target,
4426 fprintf_unfiltered (gdb_stdlog,
4427 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4428 core_addr_to_string (addr), (unsigned long) len,
4429 core_addr_to_string (retval));
4434 debug_to_can_accel_watchpoint_condition (struct target_ops *self,
4435 CORE_ADDR addr, int len, int rw,
4436 struct expression *cond)
4440 retval = debug_target.to_can_accel_watchpoint_condition (&debug_target,
4444 fprintf_unfiltered (gdb_stdlog,
4445 "target_can_accel_watchpoint_condition "
4446 "(%s, %d, %d, %s) = %ld\n",
4447 core_addr_to_string (addr), len, rw,
4448 host_address_to_string (cond), (unsigned long) retval);
4453 debug_to_stopped_by_watchpoint (struct target_ops *ops)
4457 retval = debug_target.to_stopped_by_watchpoint (&debug_target);
4459 fprintf_unfiltered (gdb_stdlog,
4460 "target_stopped_by_watchpoint () = %ld\n",
4461 (unsigned long) retval);
4466 debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr)
4470 retval = debug_target.to_stopped_data_address (target, addr);
4472 fprintf_unfiltered (gdb_stdlog,
4473 "target_stopped_data_address ([%s]) = %ld\n",
4474 core_addr_to_string (*addr),
4475 (unsigned long)retval);
4480 debug_to_watchpoint_addr_within_range (struct target_ops *target,
4482 CORE_ADDR start, int length)
4486 retval = debug_target.to_watchpoint_addr_within_range (target, addr,
4489 fprintf_filtered (gdb_stdlog,
4490 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4491 core_addr_to_string (addr), core_addr_to_string (start),
4497 debug_to_insert_hw_breakpoint (struct target_ops *self,
4498 struct gdbarch *gdbarch,
4499 struct bp_target_info *bp_tgt)
4503 retval = debug_target.to_insert_hw_breakpoint (&debug_target,
4506 fprintf_unfiltered (gdb_stdlog,
4507 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4508 core_addr_to_string (bp_tgt->placed_address),
4509 (unsigned long) retval);
4514 debug_to_remove_hw_breakpoint (struct target_ops *self,
4515 struct gdbarch *gdbarch,
4516 struct bp_target_info *bp_tgt)
4520 retval = debug_target.to_remove_hw_breakpoint (&debug_target,
4523 fprintf_unfiltered (gdb_stdlog,
4524 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4525 core_addr_to_string (bp_tgt->placed_address),
4526 (unsigned long) retval);
4531 debug_to_insert_watchpoint (struct target_ops *self,
4532 CORE_ADDR addr, int len, int type,
4533 struct expression *cond)
4537 retval = debug_target.to_insert_watchpoint (&debug_target,
4538 addr, len, type, cond);
4540 fprintf_unfiltered (gdb_stdlog,
4541 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4542 core_addr_to_string (addr), len, type,
4543 host_address_to_string (cond), (unsigned long) retval);
4548 debug_to_remove_watchpoint (struct target_ops *self,
4549 CORE_ADDR addr, int len, int type,
4550 struct expression *cond)
4554 retval = debug_target.to_remove_watchpoint (&debug_target,
4555 addr, len, type, cond);
4557 fprintf_unfiltered (gdb_stdlog,
4558 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4559 core_addr_to_string (addr), len, type,
4560 host_address_to_string (cond), (unsigned long) retval);
4565 debug_to_terminal_init (struct target_ops *self)
4567 debug_target.to_terminal_init (&debug_target);
4569 fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n");
4573 debug_to_terminal_inferior (struct target_ops *self)
4575 debug_target.to_terminal_inferior (&debug_target);
4577 fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n");
4581 debug_to_terminal_ours_for_output (struct target_ops *self)
4583 debug_target.to_terminal_ours_for_output (&debug_target);
4585 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n");
4589 debug_to_terminal_ours (struct target_ops *self)
4591 debug_target.to_terminal_ours (&debug_target);
4593 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n");
4597 debug_to_terminal_save_ours (struct target_ops *self)
4599 debug_target.to_terminal_save_ours (&debug_target);
4601 fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n");
4605 debug_to_terminal_info (struct target_ops *self,
4606 const char *arg, int from_tty)
4608 debug_target.to_terminal_info (&debug_target, arg, from_tty);
4610 fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg,
4615 debug_to_load (struct target_ops *self, char *args, int from_tty)
4617 debug_target.to_load (&debug_target, args, from_tty);
4619 fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty);
4623 debug_to_post_startup_inferior (struct target_ops *self, ptid_t ptid)
4625 debug_target.to_post_startup_inferior (&debug_target, ptid);
4627 fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n",
4628 ptid_get_pid (ptid));
4632 debug_to_insert_fork_catchpoint (struct target_ops *self, int pid)
4636 retval = debug_target.to_insert_fork_catchpoint (&debug_target, pid);
4638 fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n",
4645 debug_to_remove_fork_catchpoint (struct target_ops *self, int pid)
4649 retval = debug_target.to_remove_fork_catchpoint (&debug_target, pid);
4651 fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n",
4658 debug_to_insert_vfork_catchpoint (struct target_ops *self, int pid)
4662 retval = debug_target.to_insert_vfork_catchpoint (&debug_target, pid);
4664 fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n",
4671 debug_to_remove_vfork_catchpoint (struct target_ops *self, int pid)
4675 retval = debug_target.to_remove_vfork_catchpoint (&debug_target, pid);
4677 fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n",
4684 debug_to_insert_exec_catchpoint (struct target_ops *self, int pid)
4688 retval = debug_target.to_insert_exec_catchpoint (&debug_target, pid);
4690 fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n",
4697 debug_to_remove_exec_catchpoint (struct target_ops *self, int pid)
4701 retval = debug_target.to_remove_exec_catchpoint (&debug_target, pid);
4703 fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n",
4710 debug_to_has_exited (struct target_ops *self,
4711 int pid, int wait_status, int *exit_status)
4715 has_exited = debug_target.to_has_exited (&debug_target,
4716 pid, wait_status, exit_status);
4718 fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n",
4719 pid, wait_status, *exit_status, has_exited);
4725 debug_to_can_run (struct target_ops *self)
4729 retval = debug_target.to_can_run (&debug_target);
4731 fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval);
4736 static struct gdbarch *
4737 debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid)
4739 struct gdbarch *retval;
4741 retval = debug_target.to_thread_architecture (ops, ptid);
4743 fprintf_unfiltered (gdb_stdlog,
4744 "target_thread_architecture (%s) = %s [%s]\n",
4745 target_pid_to_str (ptid),
4746 host_address_to_string (retval),
4747 gdbarch_bfd_arch_info (retval)->printable_name);
4752 debug_to_stop (struct target_ops *self, ptid_t ptid)
4754 debug_target.to_stop (&debug_target, ptid);
4756 fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n",
4757 target_pid_to_str (ptid));
4761 debug_to_rcmd (struct target_ops *self, char *command,
4762 struct ui_file *outbuf)
4764 debug_target.to_rcmd (&debug_target, command, outbuf);
4765 fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command);
4769 debug_to_pid_to_exec_file (struct target_ops *self, int pid)
4773 exec_file = debug_target.to_pid_to_exec_file (&debug_target, pid);
4775 fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n",
4782 setup_target_debug (void)
4784 memcpy (&debug_target, ¤t_target, sizeof debug_target);
4786 current_target.to_open = debug_to_open;
4787 current_target.to_post_attach = debug_to_post_attach;
4788 current_target.to_prepare_to_store = debug_to_prepare_to_store;
4789 current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory;
4790 current_target.to_files_info = debug_to_files_info;
4791 current_target.to_insert_breakpoint = debug_to_insert_breakpoint;
4792 current_target.to_remove_breakpoint = debug_to_remove_breakpoint;
4793 current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint;
4794 current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint;
4795 current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint;
4796 current_target.to_insert_watchpoint = debug_to_insert_watchpoint;
4797 current_target.to_remove_watchpoint = debug_to_remove_watchpoint;
4798 current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint;
4799 current_target.to_stopped_data_address = debug_to_stopped_data_address;
4800 current_target.to_watchpoint_addr_within_range
4801 = debug_to_watchpoint_addr_within_range;
4802 current_target.to_region_ok_for_hw_watchpoint
4803 = debug_to_region_ok_for_hw_watchpoint;
4804 current_target.to_can_accel_watchpoint_condition
4805 = debug_to_can_accel_watchpoint_condition;
4806 current_target.to_terminal_init = debug_to_terminal_init;
4807 current_target.to_terminal_inferior = debug_to_terminal_inferior;
4808 current_target.to_terminal_ours_for_output
4809 = debug_to_terminal_ours_for_output;
4810 current_target.to_terminal_ours = debug_to_terminal_ours;
4811 current_target.to_terminal_save_ours = debug_to_terminal_save_ours;
4812 current_target.to_terminal_info = debug_to_terminal_info;
4813 current_target.to_load = debug_to_load;
4814 current_target.to_post_startup_inferior = debug_to_post_startup_inferior;
4815 current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint;
4816 current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint;
4817 current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint;
4818 current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint;
4819 current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint;
4820 current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint;
4821 current_target.to_has_exited = debug_to_has_exited;
4822 current_target.to_can_run = debug_to_can_run;
4823 current_target.to_stop = debug_to_stop;
4824 current_target.to_rcmd = debug_to_rcmd;
4825 current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file;
4826 current_target.to_thread_architecture = debug_to_thread_architecture;
4830 static char targ_desc[] =
4831 "Names of targets and files being debugged.\nShows the entire \
4832 stack of targets currently in use (including the exec-file,\n\
4833 core-file, and process, if any), as well as the symbol file name.";
4836 default_rcmd (struct target_ops *self, char *command, struct ui_file *output)
4838 error (_("\"monitor\" command not supported by this target."));
4842 do_monitor_command (char *cmd,
4845 target_rcmd (cmd, gdb_stdtarg);
4848 /* Print the name of each layers of our target stack. */
4851 maintenance_print_target_stack (char *cmd, int from_tty)
4853 struct target_ops *t;
4855 printf_filtered (_("The current target stack is:\n"));
4857 for (t = target_stack; t != NULL; t = t->beneath)
4859 printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname);
4863 /* Controls if async mode is permitted. */
4864 int target_async_permitted = 0;
4866 /* The set command writes to this variable. If the inferior is
4867 executing, target_async_permitted is *not* updated. */
4868 static int target_async_permitted_1 = 0;
4871 set_target_async_command (char *args, int from_tty,
4872 struct cmd_list_element *c)
4874 if (have_live_inferiors ())
4876 target_async_permitted_1 = target_async_permitted;
4877 error (_("Cannot change this setting while the inferior is running."));
4880 target_async_permitted = target_async_permitted_1;
4884 show_target_async_command (struct ui_file *file, int from_tty,
4885 struct cmd_list_element *c,
4888 fprintf_filtered (file,
4889 _("Controlling the inferior in "
4890 "asynchronous mode is %s.\n"), value);
4893 /* Temporary copies of permission settings. */
4895 static int may_write_registers_1 = 1;
4896 static int may_write_memory_1 = 1;
4897 static int may_insert_breakpoints_1 = 1;
4898 static int may_insert_tracepoints_1 = 1;
4899 static int may_insert_fast_tracepoints_1 = 1;
4900 static int may_stop_1 = 1;
4902 /* Make the user-set values match the real values again. */
4905 update_target_permissions (void)
4907 may_write_registers_1 = may_write_registers;
4908 may_write_memory_1 = may_write_memory;
4909 may_insert_breakpoints_1 = may_insert_breakpoints;
4910 may_insert_tracepoints_1 = may_insert_tracepoints;
4911 may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints;
4912 may_stop_1 = may_stop;
4915 /* The one function handles (most of) the permission flags in the same
4919 set_target_permissions (char *args, int from_tty,
4920 struct cmd_list_element *c)
4922 if (target_has_execution)
4924 update_target_permissions ();
4925 error (_("Cannot change this setting while the inferior is running."));
4928 /* Make the real values match the user-changed values. */
4929 may_write_registers = may_write_registers_1;
4930 may_insert_breakpoints = may_insert_breakpoints_1;
4931 may_insert_tracepoints = may_insert_tracepoints_1;
4932 may_insert_fast_tracepoints = may_insert_fast_tracepoints_1;
4933 may_stop = may_stop_1;
4934 update_observer_mode ();
4937 /* Set memory write permission independently of observer mode. */
4940 set_write_memory_permission (char *args, int from_tty,
4941 struct cmd_list_element *c)
4943 /* Make the real values match the user-changed values. */
4944 may_write_memory = may_write_memory_1;
4945 update_observer_mode ();
4950 initialize_targets (void)
4952 init_dummy_target ();
4953 push_target (&dummy_target);
4955 add_info ("target", target_info, targ_desc);
4956 add_info ("files", target_info, targ_desc);
4958 add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\
4959 Set target debugging."), _("\
4960 Show target debugging."), _("\
4961 When non-zero, target debugging is enabled. Higher numbers are more\n\
4962 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4966 &setdebuglist, &showdebuglist);
4968 add_setshow_boolean_cmd ("trust-readonly-sections", class_support,
4969 &trust_readonly, _("\
4970 Set mode for reading from readonly sections."), _("\
4971 Show mode for reading from readonly sections."), _("\
4972 When this mode is on, memory reads from readonly sections (such as .text)\n\
4973 will be read from the object file instead of from the target. This will\n\
4974 result in significant performance improvement for remote targets."),
4976 show_trust_readonly,
4977 &setlist, &showlist);
4979 add_com ("monitor", class_obscure, do_monitor_command,
4980 _("Send a command to the remote monitor (remote targets only)."));
4982 add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack,
4983 _("Print the name of each layer of the internal target stack."),
4984 &maintenanceprintlist);
4986 add_setshow_boolean_cmd ("target-async", no_class,
4987 &target_async_permitted_1, _("\
4988 Set whether gdb controls the inferior in asynchronous mode."), _("\
4989 Show whether gdb controls the inferior in asynchronous mode."), _("\
4990 Tells gdb whether to control the inferior in asynchronous mode."),
4991 set_target_async_command,
4992 show_target_async_command,
4996 add_setshow_boolean_cmd ("may-write-registers", class_support,
4997 &may_write_registers_1, _("\
4998 Set permission to write into registers."), _("\
4999 Show permission to write into registers."), _("\
5000 When this permission is on, GDB may write into the target's registers.\n\
5001 Otherwise, any sort of write attempt will result in an error."),
5002 set_target_permissions, NULL,
5003 &setlist, &showlist);
5005 add_setshow_boolean_cmd ("may-write-memory", class_support,
5006 &may_write_memory_1, _("\
5007 Set permission to write into target memory."), _("\
5008 Show permission to write into target memory."), _("\
5009 When this permission is on, GDB may write into the target's memory.\n\
5010 Otherwise, any sort of write attempt will result in an error."),
5011 set_write_memory_permission, NULL,
5012 &setlist, &showlist);
5014 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support,
5015 &may_insert_breakpoints_1, _("\
5016 Set permission to insert breakpoints in the target."), _("\
5017 Show permission to insert breakpoints in the target."), _("\
5018 When this permission is on, GDB may insert breakpoints in the program.\n\
5019 Otherwise, any sort of insertion attempt will result in an error."),
5020 set_target_permissions, NULL,
5021 &setlist, &showlist);
5023 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support,
5024 &may_insert_tracepoints_1, _("\
5025 Set permission to insert tracepoints in the target."), _("\
5026 Show permission to insert tracepoints in the target."), _("\
5027 When this permission is on, GDB may insert tracepoints in the program.\n\
5028 Otherwise, any sort of insertion attempt will result in an error."),
5029 set_target_permissions, NULL,
5030 &setlist, &showlist);
5032 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support,
5033 &may_insert_fast_tracepoints_1, _("\
5034 Set permission to insert fast tracepoints in the target."), _("\
5035 Show permission to insert fast tracepoints in the target."), _("\
5036 When this permission is on, GDB may insert fast tracepoints.\n\
5037 Otherwise, any sort of insertion attempt will result in an error."),
5038 set_target_permissions, NULL,
5039 &setlist, &showlist);
5041 add_setshow_boolean_cmd ("may-interrupt", class_support,
5043 Set permission to interrupt or signal the target."), _("\
5044 Show permission to interrupt or signal the target."), _("\
5045 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5046 Otherwise, any attempt to interrupt or stop will be ignored."),
5047 set_target_permissions, NULL,
5048 &setlist, &showlist);