1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2014 Free Software Foundation, Inc.
5 Contributed by Cygnus Support.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "target-dcache.h"
36 #include "gdb_assert.h"
38 #include "exceptions.h"
39 #include "target-descriptions.h"
40 #include "gdbthread.h"
43 #include "inline-frame.h"
44 #include "tracepoint.h"
45 #include "gdb/fileio.h"
48 static void target_info (char *, int);
50 static void default_terminal_info (struct target_ops *, const char *, int);
52 static int default_watchpoint_addr_within_range (struct target_ops *,
53 CORE_ADDR, CORE_ADDR, int);
55 static int default_region_ok_for_hw_watchpoint (struct target_ops *,
58 static void default_rcmd (struct target_ops *, char *, struct ui_file *);
60 static ptid_t default_get_ada_task_ptid (struct target_ops *self,
63 static void tcomplain (void) ATTRIBUTE_NORETURN;
65 static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *);
67 static int return_zero (void);
69 void target_ignore (void);
71 static void target_command (char *, int);
73 static struct target_ops *find_default_run_target (char *);
75 static target_xfer_partial_ftype default_xfer_partial;
77 static struct gdbarch *default_thread_architecture (struct target_ops *ops,
80 static int dummy_find_memory_regions (struct target_ops *self,
81 find_memory_region_ftype ignore1,
84 static char *dummy_make_corefile_notes (struct target_ops *self,
85 bfd *ignore1, int *ignore2);
87 static int find_default_can_async_p (struct target_ops *ignore);
89 static int find_default_is_async_p (struct target_ops *ignore);
91 static enum exec_direction_kind default_execution_direction
92 (struct target_ops *self);
94 #include "target-delegates.c"
96 static void init_dummy_target (void);
98 static struct target_ops debug_target;
100 static void debug_to_open (char *, int);
102 static void debug_to_prepare_to_store (struct target_ops *self,
105 static void debug_to_files_info (struct target_ops *);
107 static int debug_to_insert_breakpoint (struct target_ops *, struct gdbarch *,
108 struct bp_target_info *);
110 static int debug_to_remove_breakpoint (struct target_ops *, struct gdbarch *,
111 struct bp_target_info *);
113 static int debug_to_can_use_hw_breakpoint (struct target_ops *self,
116 static int debug_to_insert_hw_breakpoint (struct target_ops *self,
118 struct bp_target_info *);
120 static int debug_to_remove_hw_breakpoint (struct target_ops *self,
122 struct bp_target_info *);
124 static int debug_to_insert_watchpoint (struct target_ops *self,
126 struct expression *);
128 static int debug_to_remove_watchpoint (struct target_ops *self,
130 struct expression *);
132 static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *);
134 static int debug_to_watchpoint_addr_within_range (struct target_ops *,
135 CORE_ADDR, CORE_ADDR, int);
137 static int debug_to_region_ok_for_hw_watchpoint (struct target_ops *self,
140 static int debug_to_can_accel_watchpoint_condition (struct target_ops *self,
142 struct expression *);
144 static void debug_to_terminal_init (struct target_ops *self);
146 static void debug_to_terminal_inferior (struct target_ops *self);
148 static void debug_to_terminal_ours_for_output (struct target_ops *self);
150 static void debug_to_terminal_save_ours (struct target_ops *self);
152 static void debug_to_terminal_ours (struct target_ops *self);
154 static void debug_to_load (struct target_ops *self, char *, int);
156 static int debug_to_can_run (struct target_ops *self);
158 static void debug_to_stop (struct target_ops *self, ptid_t);
160 /* Pointer to array of target architecture structures; the size of the
161 array; the current index into the array; the allocated size of the
163 struct target_ops **target_structs;
164 unsigned target_struct_size;
165 unsigned target_struct_allocsize;
166 #define DEFAULT_ALLOCSIZE 10
168 /* The initial current target, so that there is always a semi-valid
171 static struct target_ops dummy_target;
173 /* Top of target stack. */
175 static struct target_ops *target_stack;
177 /* The target structure we are currently using to talk to a process
178 or file or whatever "inferior" we have. */
180 struct target_ops current_target;
182 /* Command list for target. */
184 static struct cmd_list_element *targetlist = NULL;
186 /* Nonzero if we should trust readonly sections from the
187 executable when reading memory. */
189 static int trust_readonly = 0;
191 /* Nonzero if we should show true memory content including
192 memory breakpoint inserted by gdb. */
194 static int show_memory_breakpoints = 0;
196 /* These globals control whether GDB attempts to perform these
197 operations; they are useful for targets that need to prevent
198 inadvertant disruption, such as in non-stop mode. */
200 int may_write_registers = 1;
202 int may_write_memory = 1;
204 int may_insert_breakpoints = 1;
206 int may_insert_tracepoints = 1;
208 int may_insert_fast_tracepoints = 1;
212 /* Non-zero if we want to see trace of target level stuff. */
214 static unsigned int targetdebug = 0;
216 show_targetdebug (struct ui_file *file, int from_tty,
217 struct cmd_list_element *c, const char *value)
219 fprintf_filtered (file, _("Target debugging is %s.\n"), value);
222 static void setup_target_debug (void);
224 /* The user just typed 'target' without the name of a target. */
227 target_command (char *arg, int from_tty)
229 fputs_filtered ("Argument required (target name). Try `help target'\n",
233 /* Default target_has_* methods for process_stratum targets. */
236 default_child_has_all_memory (struct target_ops *ops)
238 /* If no inferior selected, then we can't read memory here. */
239 if (ptid_equal (inferior_ptid, null_ptid))
246 default_child_has_memory (struct target_ops *ops)
248 /* If no inferior selected, then we can't read memory here. */
249 if (ptid_equal (inferior_ptid, null_ptid))
256 default_child_has_stack (struct target_ops *ops)
258 /* If no inferior selected, there's no stack. */
259 if (ptid_equal (inferior_ptid, null_ptid))
266 default_child_has_registers (struct target_ops *ops)
268 /* Can't read registers from no inferior. */
269 if (ptid_equal (inferior_ptid, null_ptid))
276 default_child_has_execution (struct target_ops *ops, ptid_t the_ptid)
278 /* If there's no thread selected, then we can't make it run through
280 if (ptid_equal (the_ptid, null_ptid))
288 target_has_all_memory_1 (void)
290 struct target_ops *t;
292 for (t = current_target.beneath; t != NULL; t = t->beneath)
293 if (t->to_has_all_memory (t))
300 target_has_memory_1 (void)
302 struct target_ops *t;
304 for (t = current_target.beneath; t != NULL; t = t->beneath)
305 if (t->to_has_memory (t))
312 target_has_stack_1 (void)
314 struct target_ops *t;
316 for (t = current_target.beneath; t != NULL; t = t->beneath)
317 if (t->to_has_stack (t))
324 target_has_registers_1 (void)
326 struct target_ops *t;
328 for (t = current_target.beneath; t != NULL; t = t->beneath)
329 if (t->to_has_registers (t))
336 target_has_execution_1 (ptid_t the_ptid)
338 struct target_ops *t;
340 for (t = current_target.beneath; t != NULL; t = t->beneath)
341 if (t->to_has_execution (t, the_ptid))
348 target_has_execution_current (void)
350 return target_has_execution_1 (inferior_ptid);
353 /* Complete initialization of T. This ensures that various fields in
354 T are set, if needed by the target implementation. */
357 complete_target_initialization (struct target_ops *t)
359 /* Provide default values for all "must have" methods. */
360 if (t->to_xfer_partial == NULL)
361 t->to_xfer_partial = default_xfer_partial;
363 if (t->to_has_all_memory == NULL)
364 t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero;
366 if (t->to_has_memory == NULL)
367 t->to_has_memory = (int (*) (struct target_ops *)) return_zero;
369 if (t->to_has_stack == NULL)
370 t->to_has_stack = (int (*) (struct target_ops *)) return_zero;
372 if (t->to_has_registers == NULL)
373 t->to_has_registers = (int (*) (struct target_ops *)) return_zero;
375 if (t->to_has_execution == NULL)
376 t->to_has_execution = (int (*) (struct target_ops *, ptid_t)) return_zero;
378 install_delegators (t);
381 /* Add possible target architecture T to the list and add a new
382 command 'target T->to_shortname'. Set COMPLETER as the command's
383 completer if not NULL. */
386 add_target_with_completer (struct target_ops *t,
387 completer_ftype *completer)
389 struct cmd_list_element *c;
391 complete_target_initialization (t);
395 target_struct_allocsize = DEFAULT_ALLOCSIZE;
396 target_structs = (struct target_ops **) xmalloc
397 (target_struct_allocsize * sizeof (*target_structs));
399 if (target_struct_size >= target_struct_allocsize)
401 target_struct_allocsize *= 2;
402 target_structs = (struct target_ops **)
403 xrealloc ((char *) target_structs,
404 target_struct_allocsize * sizeof (*target_structs));
406 target_structs[target_struct_size++] = t;
408 if (targetlist == NULL)
409 add_prefix_cmd ("target", class_run, target_command, _("\
410 Connect to a target machine or process.\n\
411 The first argument is the type or protocol of the target machine.\n\
412 Remaining arguments are interpreted by the target protocol. For more\n\
413 information on the arguments for a particular protocol, type\n\
414 `help target ' followed by the protocol name."),
415 &targetlist, "target ", 0, &cmdlist);
416 c = add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc,
418 if (completer != NULL)
419 set_cmd_completer (c, completer);
422 /* Add a possible target architecture to the list. */
425 add_target (struct target_ops *t)
427 add_target_with_completer (t, NULL);
433 add_deprecated_target_alias (struct target_ops *t, char *alias)
435 struct cmd_list_element *c;
438 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
440 c = add_cmd (alias, no_class, t->to_open, t->to_doc, &targetlist);
441 alt = xstrprintf ("target %s", t->to_shortname);
442 deprecate_cmd (c, alt);
456 fprintf_unfiltered (gdb_stdlog, "target_kill ()\n");
458 current_target.to_kill (¤t_target);
462 target_load (char *arg, int from_tty)
464 target_dcache_invalidate ();
465 (*current_target.to_load) (¤t_target, arg, from_tty);
469 target_create_inferior (char *exec_file, char *args,
470 char **env, int from_tty)
472 struct target_ops *t;
474 for (t = current_target.beneath; t != NULL; t = t->beneath)
476 if (t->to_create_inferior != NULL)
478 t->to_create_inferior (t, exec_file, args, env, from_tty);
480 fprintf_unfiltered (gdb_stdlog,
481 "target_create_inferior (%s, %s, xxx, %d)\n",
482 exec_file, args, from_tty);
487 internal_error (__FILE__, __LINE__,
488 _("could not find a target to create inferior"));
492 target_terminal_inferior (void)
494 /* A background resume (``run&'') should leave GDB in control of the
495 terminal. Use target_can_async_p, not target_is_async_p, since at
496 this point the target is not async yet. However, if sync_execution
497 is not set, we know it will become async prior to resume. */
498 if (target_can_async_p () && !sync_execution)
501 /* If GDB is resuming the inferior in the foreground, install
502 inferior's terminal modes. */
503 (*current_target.to_terminal_inferior) (¤t_target);
507 nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write,
508 struct target_ops *t)
510 errno = EIO; /* Can't read/write this location. */
511 return 0; /* No bytes handled. */
517 error (_("You can't do that when your target is `%s'"),
518 current_target.to_shortname);
524 error (_("You can't do that without a process to debug."));
528 default_terminal_info (struct target_ops *self, const char *args, int from_tty)
530 printf_unfiltered (_("No saved terminal information.\n"));
533 /* A default implementation for the to_get_ada_task_ptid target method.
535 This function builds the PTID by using both LWP and TID as part of
536 the PTID lwp and tid elements. The pid used is the pid of the
540 default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid)
542 return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid);
545 static enum exec_direction_kind
546 default_execution_direction (struct target_ops *self)
548 if (!target_can_execute_reverse)
550 else if (!target_can_async_p ())
553 gdb_assert_not_reached ("\
554 to_execution_direction must be implemented for reverse async");
557 /* Go through the target stack from top to bottom, copying over zero
558 entries in current_target, then filling in still empty entries. In
559 effect, we are doing class inheritance through the pushed target
562 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
563 is currently implemented, is that it discards any knowledge of
564 which target an inherited method originally belonged to.
565 Consequently, new new target methods should instead explicitly and
566 locally search the target stack for the target that can handle the
570 update_current_target (void)
572 struct target_ops *t;
574 /* First, reset current's contents. */
575 memset (¤t_target, 0, sizeof (current_target));
577 /* Install the delegators. */
578 install_delegators (¤t_target);
580 #define INHERIT(FIELD, TARGET) \
581 if (!current_target.FIELD) \
582 current_target.FIELD = (TARGET)->FIELD
584 for (t = target_stack; t; t = t->beneath)
586 INHERIT (to_shortname, t);
587 INHERIT (to_longname, t);
589 /* Do not inherit to_open. */
590 /* Do not inherit to_close. */
591 /* Do not inherit to_attach. */
592 /* Do not inherit to_post_attach. */
593 INHERIT (to_attach_no_wait, t);
594 /* Do not inherit to_detach. */
595 /* Do not inherit to_disconnect. */
596 /* Do not inherit to_resume. */
597 /* Do not inherit to_wait. */
598 /* Do not inherit to_fetch_registers. */
599 /* Do not inherit to_store_registers. */
600 /* Do not inherit to_prepare_to_store. */
601 INHERIT (deprecated_xfer_memory, t);
602 /* Do not inherit to_files_info. */
603 /* Do not inherit to_insert_breakpoint. */
604 /* Do not inherit to_remove_breakpoint. */
605 /* Do not inherit to_can_use_hw_breakpoint. */
606 /* Do not inherit to_insert_hw_breakpoint. */
607 /* Do not inherit to_remove_hw_breakpoint. */
608 /* Do not inherit to_ranged_break_num_registers. */
609 /* Do not inherit to_insert_watchpoint. */
610 /* Do not inherit to_remove_watchpoint. */
611 /* Do not inherit to_insert_mask_watchpoint. */
612 /* Do not inherit to_remove_mask_watchpoint. */
613 /* Do not inherit to_stopped_data_address. */
614 INHERIT (to_have_steppable_watchpoint, t);
615 INHERIT (to_have_continuable_watchpoint, t);
616 /* Do not inherit to_stopped_by_watchpoint. */
617 /* Do not inherit to_watchpoint_addr_within_range. */
618 /* Do not inherit to_region_ok_for_hw_watchpoint. */
619 /* Do not inherit to_can_accel_watchpoint_condition. */
620 /* Do not inherit to_masked_watch_num_registers. */
621 /* Do not inherit to_terminal_init. */
622 /* Do not inherit to_terminal_inferior. */
623 /* Do not inherit to_terminal_ours_for_output. */
624 /* Do not inherit to_terminal_ours. */
625 /* Do not inherit to_terminal_save_ours. */
626 /* Do not inherit to_terminal_info. */
627 /* Do not inherit to_kill. */
628 /* Do not inherit to_load. */
629 /* Do no inherit to_create_inferior. */
630 /* Do not inherit to_post_startup_inferior. */
631 /* Do not inherit to_insert_fork_catchpoint. */
632 /* Do not inherit to_remove_fork_catchpoint. */
633 /* Do not inherit to_insert_vfork_catchpoint. */
634 /* Do not inherit to_remove_vfork_catchpoint. */
635 /* Do not inherit to_follow_fork. */
636 /* Do not inherit to_insert_exec_catchpoint. */
637 /* Do not inherit to_remove_exec_catchpoint. */
638 /* Do not inherit to_set_syscall_catchpoint. */
639 /* Do not inherit to_has_exited. */
640 /* Do not inherit to_mourn_inferior. */
641 INHERIT (to_can_run, t);
642 /* Do not inherit to_pass_signals. */
643 /* Do not inherit to_program_signals. */
644 /* Do not inherit to_thread_alive. */
645 /* Do not inherit to_find_new_threads. */
646 /* Do not inherit to_pid_to_str. */
647 /* Do not inherit to_extra_thread_info. */
648 /* Do not inherit to_thread_name. */
649 /* Do not inherit to_stop. */
650 /* Do not inherit to_xfer_partial. */
651 /* Do not inherit to_rcmd. */
652 /* Do not inherit to_pid_to_exec_file. */
653 /* Do not inherit to_log_command. */
654 INHERIT (to_stratum, t);
655 /* Do not inherit to_has_all_memory. */
656 /* Do not inherit to_has_memory. */
657 /* Do not inherit to_has_stack. */
658 /* Do not inherit to_has_registers. */
659 /* Do not inherit to_has_execution. */
660 INHERIT (to_has_thread_control, t);
661 /* Do not inherit to_can_async_p. */
662 /* Do not inherit to_is_async_p. */
663 /* Do not inherit to_async. */
664 /* Do not inherit to_find_memory_regions. */
665 /* Do not inherit to_make_corefile_notes. */
666 /* Do not inherit to_get_bookmark. */
667 /* Do not inherit to_goto_bookmark. */
668 /* Do not inherit to_get_thread_local_address. */
669 /* Do not inherit to_can_execute_reverse. */
670 /* Do not inherit to_execution_direction. */
671 /* Do not inherit to_thread_architecture. */
672 /* Do not inherit to_read_description. */
673 /* Do not inherit to_get_ada_task_ptid. */
674 /* Do not inherit to_search_memory. */
675 /* Do not inherit to_supports_multi_process. */
676 /* Do not inherit to_supports_enable_disable_tracepoint. */
677 /* Do not inherit to_supports_string_tracing. */
678 /* Do not inherit to_trace_init. */
679 /* Do not inherit to_download_tracepoint. */
680 /* Do not inherit to_can_download_tracepoint. */
681 /* Do not inherit to_download_trace_state_variable. */
682 /* Do not inherit to_enable_tracepoint. */
683 /* Do not inherit to_disable_tracepoint. */
684 /* Do not inherit to_trace_set_readonly_regions. */
685 /* Do not inherit to_trace_start. */
686 /* Do not inherit to_get_trace_status. */
687 /* Do not inherit to_get_tracepoint_status. */
688 /* Do not inherit to_trace_stop. */
689 /* Do not inherit to_trace_find. */
690 /* Do not inherit to_get_trace_state_variable_value. */
691 /* Do not inherit to_save_trace_data. */
692 /* Do not inherit to_upload_tracepoints. */
693 /* Do not inherit to_upload_trace_state_variables. */
694 /* Do not inherit to_get_raw_trace_data. */
695 /* Do not inherit to_get_min_fast_tracepoint_insn_len. */
696 /* Do not inherit to_set_disconnected_tracing. */
697 /* Do not inherit to_set_circular_trace_buffer. */
698 /* Do not inherit to_set_trace_buffer_size. */
699 /* Do not inherit to_set_trace_notes. */
700 /* Do not inherit to_get_tib_address. */
701 /* Do not inherit to_set_permissions. */
702 /* Do not inherit to_static_tracepoint_marker_at. */
703 /* Do not inherit to_static_tracepoint_markers_by_strid. */
704 /* Do not inherit to_traceframe_info. */
705 /* Do not inherit to_use_agent. */
706 /* Do not inherit to_can_use_agent. */
707 /* Do not inherit to_augmented_libraries_svr4_read. */
708 INHERIT (to_magic, t);
710 to_supports_evaluation_of_breakpoint_conditions. */
711 /* Do not inherit to_can_run_breakpoint_commands. */
712 /* Do not inherit to_memory_map. */
713 /* Do not inherit to_flash_erase. */
714 /* Do not inherit to_flash_done. */
718 /* Clean up a target struct so it no longer has any zero pointers in
719 it. Some entries are defaulted to a method that print an error,
720 others are hard-wired to a standard recursive default. */
722 #define de_fault(field, value) \
723 if (!current_target.field) \
724 current_target.field = value
727 (void (*) (char *, int))
730 (void (*) (struct target_ops *))
732 de_fault (deprecated_xfer_memory,
733 (int (*) (CORE_ADDR, gdb_byte *, int, int,
734 struct mem_attrib *, struct target_ops *))
736 de_fault (to_can_run,
737 (int (*) (struct target_ops *))
739 current_target.to_read_description = NULL;
743 /* Finally, position the target-stack beneath the squashed
744 "current_target". That way code looking for a non-inherited
745 target method can quickly and simply find it. */
746 current_target.beneath = target_stack;
749 setup_target_debug ();
752 /* Push a new target type into the stack of the existing target accessors,
753 possibly superseding some of the existing accessors.
755 Rather than allow an empty stack, we always have the dummy target at
756 the bottom stratum, so we can call the function vectors without
760 push_target (struct target_ops *t)
762 struct target_ops **cur;
764 /* Check magic number. If wrong, it probably means someone changed
765 the struct definition, but not all the places that initialize one. */
766 if (t->to_magic != OPS_MAGIC)
768 fprintf_unfiltered (gdb_stderr,
769 "Magic number of %s target struct wrong\n",
771 internal_error (__FILE__, __LINE__,
772 _("failed internal consistency check"));
775 /* Find the proper stratum to install this target in. */
776 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
778 if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum)
782 /* If there's already targets at this stratum, remove them. */
783 /* FIXME: cagney/2003-10-15: I think this should be popping all
784 targets to CUR, and not just those at this stratum level. */
785 while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum)
787 /* There's already something at this stratum level. Close it,
788 and un-hook it from the stack. */
789 struct target_ops *tmp = (*cur);
791 (*cur) = (*cur)->beneath;
796 /* We have removed all targets in our stratum, now add the new one. */
800 update_current_target ();
803 /* Remove a target_ops vector from the stack, wherever it may be.
804 Return how many times it was removed (0 or 1). */
807 unpush_target (struct target_ops *t)
809 struct target_ops **cur;
810 struct target_ops *tmp;
812 if (t->to_stratum == dummy_stratum)
813 internal_error (__FILE__, __LINE__,
814 _("Attempt to unpush the dummy target"));
816 /* Look for the specified target. Note that we assume that a target
817 can only occur once in the target stack. */
819 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
825 /* If we don't find target_ops, quit. Only open targets should be
830 /* Unchain the target. */
832 (*cur) = (*cur)->beneath;
835 update_current_target ();
837 /* Finally close the target. Note we do this after unchaining, so
838 any target method calls from within the target_close
839 implementation don't end up in T anymore. */
846 pop_all_targets_above (enum strata above_stratum)
848 while ((int) (current_target.to_stratum) > (int) above_stratum)
850 if (!unpush_target (target_stack))
852 fprintf_unfiltered (gdb_stderr,
853 "pop_all_targets couldn't find target %s\n",
854 target_stack->to_shortname);
855 internal_error (__FILE__, __LINE__,
856 _("failed internal consistency check"));
863 pop_all_targets (void)
865 pop_all_targets_above (dummy_stratum);
868 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
871 target_is_pushed (struct target_ops *t)
873 struct target_ops **cur;
875 /* Check magic number. If wrong, it probably means someone changed
876 the struct definition, but not all the places that initialize one. */
877 if (t->to_magic != OPS_MAGIC)
879 fprintf_unfiltered (gdb_stderr,
880 "Magic number of %s target struct wrong\n",
882 internal_error (__FILE__, __LINE__,
883 _("failed internal consistency check"));
886 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
893 /* Using the objfile specified in OBJFILE, find the address for the
894 current thread's thread-local storage with offset OFFSET. */
896 target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset)
898 volatile CORE_ADDR addr = 0;
899 struct target_ops *target;
901 for (target = current_target.beneath;
903 target = target->beneath)
905 if (target->to_get_thread_local_address != NULL)
910 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
912 ptid_t ptid = inferior_ptid;
913 volatile struct gdb_exception ex;
915 TRY_CATCH (ex, RETURN_MASK_ALL)
919 /* Fetch the load module address for this objfile. */
920 lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (),
922 /* If it's 0, throw the appropriate exception. */
924 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR,
925 _("TLS load module not found"));
927 addr = target->to_get_thread_local_address (target, ptid,
930 /* If an error occurred, print TLS related messages here. Otherwise,
931 throw the error to some higher catcher. */
934 int objfile_is_library = (objfile->flags & OBJF_SHARED);
938 case TLS_NO_LIBRARY_SUPPORT_ERROR:
939 error (_("Cannot find thread-local variables "
940 "in this thread library."));
942 case TLS_LOAD_MODULE_NOT_FOUND_ERROR:
943 if (objfile_is_library)
944 error (_("Cannot find shared library `%s' in dynamic"
945 " linker's load module list"), objfile_name (objfile));
947 error (_("Cannot find executable file `%s' in dynamic"
948 " linker's load module list"), objfile_name (objfile));
950 case TLS_NOT_ALLOCATED_YET_ERROR:
951 if (objfile_is_library)
952 error (_("The inferior has not yet allocated storage for"
953 " thread-local variables in\n"
954 "the shared library `%s'\n"
956 objfile_name (objfile), target_pid_to_str (ptid));
958 error (_("The inferior has not yet allocated storage for"
959 " thread-local variables in\n"
960 "the executable `%s'\n"
962 objfile_name (objfile), target_pid_to_str (ptid));
964 case TLS_GENERIC_ERROR:
965 if (objfile_is_library)
966 error (_("Cannot find thread-local storage for %s, "
967 "shared library %s:\n%s"),
968 target_pid_to_str (ptid),
969 objfile_name (objfile), ex.message);
971 error (_("Cannot find thread-local storage for %s, "
972 "executable file %s:\n%s"),
973 target_pid_to_str (ptid),
974 objfile_name (objfile), ex.message);
977 throw_exception (ex);
982 /* It wouldn't be wrong here to try a gdbarch method, too; finding
983 TLS is an ABI-specific thing. But we don't do that yet. */
985 error (_("Cannot find thread-local variables on this target"));
991 target_xfer_status_to_string (enum target_xfer_status err)
993 #define CASE(X) case X: return #X
996 CASE(TARGET_XFER_E_IO);
997 CASE(TARGET_XFER_E_UNAVAILABLE);
1006 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1008 /* target_read_string -- read a null terminated string, up to LEN bytes,
1009 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1010 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1011 is responsible for freeing it. Return the number of bytes successfully
1015 target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop)
1017 int tlen, offset, i;
1021 int buffer_allocated;
1023 unsigned int nbytes_read = 0;
1025 gdb_assert (string);
1027 /* Small for testing. */
1028 buffer_allocated = 4;
1029 buffer = xmalloc (buffer_allocated);
1034 tlen = MIN (len, 4 - (memaddr & 3));
1035 offset = memaddr & 3;
1037 errcode = target_read_memory (memaddr & ~3, buf, sizeof buf);
1040 /* The transfer request might have crossed the boundary to an
1041 unallocated region of memory. Retry the transfer, requesting
1045 errcode = target_read_memory (memaddr, buf, 1);
1050 if (bufptr - buffer + tlen > buffer_allocated)
1054 bytes = bufptr - buffer;
1055 buffer_allocated *= 2;
1056 buffer = xrealloc (buffer, buffer_allocated);
1057 bufptr = buffer + bytes;
1060 for (i = 0; i < tlen; i++)
1062 *bufptr++ = buf[i + offset];
1063 if (buf[i + offset] == '\000')
1065 nbytes_read += i + 1;
1072 nbytes_read += tlen;
1081 struct target_section_table *
1082 target_get_section_table (struct target_ops *target)
1084 struct target_ops *t;
1087 fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n");
1089 for (t = target; t != NULL; t = t->beneath)
1090 if (t->to_get_section_table != NULL)
1091 return (*t->to_get_section_table) (t);
1096 /* Find a section containing ADDR. */
1098 struct target_section *
1099 target_section_by_addr (struct target_ops *target, CORE_ADDR addr)
1101 struct target_section_table *table = target_get_section_table (target);
1102 struct target_section *secp;
1107 for (secp = table->sections; secp < table->sections_end; secp++)
1109 if (addr >= secp->addr && addr < secp->endaddr)
1115 /* Read memory from the live target, even if currently inspecting a
1116 traceframe. The return is the same as that of target_read. */
1118 static enum target_xfer_status
1119 target_read_live_memory (enum target_object object,
1120 ULONGEST memaddr, gdb_byte *myaddr, ULONGEST len,
1121 ULONGEST *xfered_len)
1123 enum target_xfer_status ret;
1124 struct cleanup *cleanup;
1126 /* Switch momentarily out of tfind mode so to access live memory.
1127 Note that this must not clear global state, such as the frame
1128 cache, which must still remain valid for the previous traceframe.
1129 We may be _building_ the frame cache at this point. */
1130 cleanup = make_cleanup_restore_traceframe_number ();
1131 set_traceframe_number (-1);
1133 ret = target_xfer_partial (current_target.beneath, object, NULL,
1134 myaddr, NULL, memaddr, len, xfered_len);
1136 do_cleanups (cleanup);
1140 /* Using the set of read-only target sections of OPS, read live
1141 read-only memory. Note that the actual reads start from the
1142 top-most target again.
1144 For interface/parameters/return description see target.h,
1147 static enum target_xfer_status
1148 memory_xfer_live_readonly_partial (struct target_ops *ops,
1149 enum target_object object,
1150 gdb_byte *readbuf, ULONGEST memaddr,
1151 ULONGEST len, ULONGEST *xfered_len)
1153 struct target_section *secp;
1154 struct target_section_table *table;
1156 secp = target_section_by_addr (ops, memaddr);
1158 && (bfd_get_section_flags (secp->the_bfd_section->owner,
1159 secp->the_bfd_section)
1162 struct target_section *p;
1163 ULONGEST memend = memaddr + len;
1165 table = target_get_section_table (ops);
1167 for (p = table->sections; p < table->sections_end; p++)
1169 if (memaddr >= p->addr)
1171 if (memend <= p->endaddr)
1173 /* Entire transfer is within this section. */
1174 return target_read_live_memory (object, memaddr,
1175 readbuf, len, xfered_len);
1177 else if (memaddr >= p->endaddr)
1179 /* This section ends before the transfer starts. */
1184 /* This section overlaps the transfer. Just do half. */
1185 len = p->endaddr - memaddr;
1186 return target_read_live_memory (object, memaddr,
1187 readbuf, len, xfered_len);
1193 return TARGET_XFER_EOF;
1196 /* Read memory from more than one valid target. A core file, for
1197 instance, could have some of memory but delegate other bits to
1198 the target below it. So, we must manually try all targets. */
1200 static enum target_xfer_status
1201 raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf,
1202 const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len,
1203 ULONGEST *xfered_len)
1205 enum target_xfer_status res;
1209 res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL,
1210 readbuf, writebuf, memaddr, len,
1212 if (res == TARGET_XFER_OK)
1215 /* Stop if the target reports that the memory is not available. */
1216 if (res == TARGET_XFER_E_UNAVAILABLE)
1219 /* We want to continue past core files to executables, but not
1220 past a running target's memory. */
1221 if (ops->to_has_all_memory (ops))
1226 while (ops != NULL);
1231 /* Perform a partial memory transfer.
1232 For docs see target.h, to_xfer_partial. */
1234 static enum target_xfer_status
1235 memory_xfer_partial_1 (struct target_ops *ops, enum target_object object,
1236 gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr,
1237 ULONGEST len, ULONGEST *xfered_len)
1239 enum target_xfer_status res;
1241 struct mem_region *region;
1242 struct inferior *inf;
1244 /* For accesses to unmapped overlay sections, read directly from
1245 files. Must do this first, as MEMADDR may need adjustment. */
1246 if (readbuf != NULL && overlay_debugging)
1248 struct obj_section *section = find_pc_overlay (memaddr);
1250 if (pc_in_unmapped_range (memaddr, section))
1252 struct target_section_table *table
1253 = target_get_section_table (ops);
1254 const char *section_name = section->the_bfd_section->name;
1256 memaddr = overlay_mapped_address (memaddr, section);
1257 return section_table_xfer_memory_partial (readbuf, writebuf,
1258 memaddr, len, xfered_len,
1260 table->sections_end,
1265 /* Try the executable files, if "trust-readonly-sections" is set. */
1266 if (readbuf != NULL && trust_readonly)
1268 struct target_section *secp;
1269 struct target_section_table *table;
1271 secp = target_section_by_addr (ops, memaddr);
1273 && (bfd_get_section_flags (secp->the_bfd_section->owner,
1274 secp->the_bfd_section)
1277 table = target_get_section_table (ops);
1278 return section_table_xfer_memory_partial (readbuf, writebuf,
1279 memaddr, len, xfered_len,
1281 table->sections_end,
1286 /* If reading unavailable memory in the context of traceframes, and
1287 this address falls within a read-only section, fallback to
1288 reading from live memory. */
1289 if (readbuf != NULL && get_traceframe_number () != -1)
1291 VEC(mem_range_s) *available;
1293 /* If we fail to get the set of available memory, then the
1294 target does not support querying traceframe info, and so we
1295 attempt reading from the traceframe anyway (assuming the
1296 target implements the old QTro packet then). */
1297 if (traceframe_available_memory (&available, memaddr, len))
1299 struct cleanup *old_chain;
1301 old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available);
1303 if (VEC_empty (mem_range_s, available)
1304 || VEC_index (mem_range_s, available, 0)->start != memaddr)
1306 /* Don't read into the traceframe's available
1308 if (!VEC_empty (mem_range_s, available))
1310 LONGEST oldlen = len;
1312 len = VEC_index (mem_range_s, available, 0)->start - memaddr;
1313 gdb_assert (len <= oldlen);
1316 do_cleanups (old_chain);
1318 /* This goes through the topmost target again. */
1319 res = memory_xfer_live_readonly_partial (ops, object,
1322 if (res == TARGET_XFER_OK)
1323 return TARGET_XFER_OK;
1326 /* No use trying further, we know some memory starting
1327 at MEMADDR isn't available. */
1329 return TARGET_XFER_E_UNAVAILABLE;
1333 /* Don't try to read more than how much is available, in
1334 case the target implements the deprecated QTro packet to
1335 cater for older GDBs (the target's knowledge of read-only
1336 sections may be outdated by now). */
1337 len = VEC_index (mem_range_s, available, 0)->length;
1339 do_cleanups (old_chain);
1343 /* Try GDB's internal data cache. */
1344 region = lookup_mem_region (memaddr);
1345 /* region->hi == 0 means there's no upper bound. */
1346 if (memaddr + len < region->hi || region->hi == 0)
1349 reg_len = region->hi - memaddr;
1351 switch (region->attrib.mode)
1354 if (writebuf != NULL)
1355 return TARGET_XFER_E_IO;
1359 if (readbuf != NULL)
1360 return TARGET_XFER_E_IO;
1364 /* We only support writing to flash during "load" for now. */
1365 if (writebuf != NULL)
1366 error (_("Writing to flash memory forbidden in this context"));
1370 return TARGET_XFER_E_IO;
1373 if (!ptid_equal (inferior_ptid, null_ptid))
1374 inf = find_inferior_pid (ptid_get_pid (inferior_ptid));
1379 /* The dcache reads whole cache lines; that doesn't play well
1380 with reading from a trace buffer, because reading outside of
1381 the collected memory range fails. */
1382 && get_traceframe_number () == -1
1383 && (region->attrib.cache
1384 || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY)
1385 || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY)))
1387 DCACHE *dcache = target_dcache_get_or_init ();
1390 if (readbuf != NULL)
1391 l = dcache_xfer_memory (ops, dcache, memaddr, readbuf, reg_len, 0);
1393 /* FIXME drow/2006-08-09: If we're going to preserve const
1394 correctness dcache_xfer_memory should take readbuf and
1396 l = dcache_xfer_memory (ops, dcache, memaddr, (void *) writebuf,
1399 return TARGET_XFER_E_IO;
1402 *xfered_len = (ULONGEST) l;
1403 return TARGET_XFER_OK;
1407 /* If none of those methods found the memory we wanted, fall back
1408 to a target partial transfer. Normally a single call to
1409 to_xfer_partial is enough; if it doesn't recognize an object
1410 it will call the to_xfer_partial of the next target down.
1411 But for memory this won't do. Memory is the only target
1412 object which can be read from more than one valid target.
1413 A core file, for instance, could have some of memory but
1414 delegate other bits to the target below it. So, we must
1415 manually try all targets. */
1417 res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len,
1420 /* Make sure the cache gets updated no matter what - if we are writing
1421 to the stack. Even if this write is not tagged as such, we still need
1422 to update the cache. */
1424 if (res == TARGET_XFER_OK
1427 && target_dcache_init_p ()
1428 && !region->attrib.cache
1429 && ((stack_cache_enabled_p () && object != TARGET_OBJECT_STACK_MEMORY)
1430 || (code_cache_enabled_p () && object != TARGET_OBJECT_CODE_MEMORY)))
1432 DCACHE *dcache = target_dcache_get ();
1434 dcache_update (dcache, memaddr, (void *) writebuf, reg_len);
1437 /* If we still haven't got anything, return the last error. We
1442 /* Perform a partial memory transfer. For docs see target.h,
1445 static enum target_xfer_status
1446 memory_xfer_partial (struct target_ops *ops, enum target_object object,
1447 gdb_byte *readbuf, const gdb_byte *writebuf,
1448 ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len)
1450 enum target_xfer_status res;
1452 /* Zero length requests are ok and require no work. */
1454 return TARGET_XFER_EOF;
1456 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1457 breakpoint insns, thus hiding out from higher layers whether
1458 there are software breakpoints inserted in the code stream. */
1459 if (readbuf != NULL)
1461 res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len,
1464 if (res == TARGET_XFER_OK && !show_memory_breakpoints)
1465 breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, res);
1470 struct cleanup *old_chain;
1472 /* A large write request is likely to be partially satisfied
1473 by memory_xfer_partial_1. We will continually malloc
1474 and free a copy of the entire write request for breakpoint
1475 shadow handling even though we only end up writing a small
1476 subset of it. Cap writes to 4KB to mitigate this. */
1477 len = min (4096, len);
1479 buf = xmalloc (len);
1480 old_chain = make_cleanup (xfree, buf);
1481 memcpy (buf, writebuf, len);
1483 breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len);
1484 res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len,
1487 do_cleanups (old_chain);
1494 restore_show_memory_breakpoints (void *arg)
1496 show_memory_breakpoints = (uintptr_t) arg;
1500 make_show_memory_breakpoints_cleanup (int show)
1502 int current = show_memory_breakpoints;
1504 show_memory_breakpoints = show;
1505 return make_cleanup (restore_show_memory_breakpoints,
1506 (void *) (uintptr_t) current);
1509 /* For docs see target.h, to_xfer_partial. */
1511 enum target_xfer_status
1512 target_xfer_partial (struct target_ops *ops,
1513 enum target_object object, const char *annex,
1514 gdb_byte *readbuf, const gdb_byte *writebuf,
1515 ULONGEST offset, ULONGEST len,
1516 ULONGEST *xfered_len)
1518 enum target_xfer_status retval;
1520 gdb_assert (ops->to_xfer_partial != NULL);
1522 /* Transfer is done when LEN is zero. */
1524 return TARGET_XFER_EOF;
1526 if (writebuf && !may_write_memory)
1527 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1528 core_addr_to_string_nz (offset), plongest (len));
1532 /* If this is a memory transfer, let the memory-specific code
1533 have a look at it instead. Memory transfers are more
1535 if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY
1536 || object == TARGET_OBJECT_CODE_MEMORY)
1537 retval = memory_xfer_partial (ops, object, readbuf,
1538 writebuf, offset, len, xfered_len);
1539 else if (object == TARGET_OBJECT_RAW_MEMORY)
1541 /* Request the normal memory object from other layers. */
1542 retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len,
1546 retval = ops->to_xfer_partial (ops, object, annex, readbuf,
1547 writebuf, offset, len, xfered_len);
1551 const unsigned char *myaddr = NULL;
1553 fprintf_unfiltered (gdb_stdlog,
1554 "%s:target_xfer_partial "
1555 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1558 (annex ? annex : "(null)"),
1559 host_address_to_string (readbuf),
1560 host_address_to_string (writebuf),
1561 core_addr_to_string_nz (offset),
1562 pulongest (len), retval,
1563 pulongest (*xfered_len));
1569 if (retval == TARGET_XFER_OK && myaddr != NULL)
1573 fputs_unfiltered (", bytes =", gdb_stdlog);
1574 for (i = 0; i < *xfered_len; i++)
1576 if ((((intptr_t) &(myaddr[i])) & 0xf) == 0)
1578 if (targetdebug < 2 && i > 0)
1580 fprintf_unfiltered (gdb_stdlog, " ...");
1583 fprintf_unfiltered (gdb_stdlog, "\n");
1586 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
1590 fputc_unfiltered ('\n', gdb_stdlog);
1593 /* Check implementations of to_xfer_partial update *XFERED_LEN
1594 properly. Do assertion after printing debug messages, so that we
1595 can find more clues on assertion failure from debugging messages. */
1596 if (retval == TARGET_XFER_OK || retval == TARGET_XFER_E_UNAVAILABLE)
1597 gdb_assert (*xfered_len > 0);
1602 /* Read LEN bytes of target memory at address MEMADDR, placing the
1603 results in GDB's memory at MYADDR. Returns either 0 for success or
1604 TARGET_XFER_E_IO if any error occurs.
1606 If an error occurs, no guarantee is made about the contents of the data at
1607 MYADDR. In particular, the caller should not depend upon partial reads
1608 filling the buffer with good data. There is no way for the caller to know
1609 how much good data might have been transfered anyway. Callers that can
1610 deal with partial reads should call target_read (which will retry until
1611 it makes no progress, and then return how much was transferred). */
1614 target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1616 /* Dispatch to the topmost target, not the flattened current_target.
1617 Memory accesses check target->to_has_(all_)memory, and the
1618 flattened target doesn't inherit those. */
1619 if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL,
1620 myaddr, memaddr, len) == len)
1623 return TARGET_XFER_E_IO;
1626 /* Like target_read_memory, but specify explicitly that this is a read
1627 from the target's raw memory. That is, this read bypasses the
1628 dcache, breakpoint shadowing, etc. */
1631 target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1633 /* See comment in target_read_memory about why the request starts at
1634 current_target.beneath. */
1635 if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL,
1636 myaddr, memaddr, len) == len)
1639 return TARGET_XFER_E_IO;
1642 /* Like target_read_memory, but specify explicitly that this is a read from
1643 the target's stack. This may trigger different cache behavior. */
1646 target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1648 /* See comment in target_read_memory about why the request starts at
1649 current_target.beneath. */
1650 if (target_read (current_target.beneath, TARGET_OBJECT_STACK_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 from
1658 the target's code. This may trigger different cache behavior. */
1661 target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1663 /* See comment in target_read_memory about why the request starts at
1664 current_target.beneath. */
1665 if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL,
1666 myaddr, memaddr, len) == len)
1669 return TARGET_XFER_E_IO;
1672 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1673 Returns either 0 for success or TARGET_XFER_E_IO if any
1674 error occurs. If an error occurs, no guarantee is made about how
1675 much data got written. Callers that can deal with partial writes
1676 should call target_write. */
1679 target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
1681 /* See comment in target_read_memory about why the request starts at
1682 current_target.beneath. */
1683 if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL,
1684 myaddr, memaddr, len) == len)
1687 return TARGET_XFER_E_IO;
1690 /* Write LEN bytes from MYADDR to target raw memory at address
1691 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1692 if any error occurs. If an error occurs, no guarantee is made
1693 about how much data got written. Callers that can deal with
1694 partial writes should call target_write. */
1697 target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
1699 /* See comment in target_read_memory about why the request starts at
1700 current_target.beneath. */
1701 if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL,
1702 myaddr, memaddr, len) == len)
1705 return TARGET_XFER_E_IO;
1708 /* Fetch the target's memory map. */
1711 target_memory_map (void)
1713 VEC(mem_region_s) *result;
1714 struct mem_region *last_one, *this_one;
1716 struct target_ops *t;
1719 fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n");
1721 for (t = current_target.beneath; t != NULL; t = t->beneath)
1722 if (t->to_memory_map != NULL)
1728 result = t->to_memory_map (t);
1732 qsort (VEC_address (mem_region_s, result),
1733 VEC_length (mem_region_s, result),
1734 sizeof (struct mem_region), mem_region_cmp);
1736 /* Check that regions do not overlap. Simultaneously assign
1737 a numbering for the "mem" commands to use to refer to
1740 for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++)
1742 this_one->number = ix;
1744 if (last_one && last_one->hi > this_one->lo)
1746 warning (_("Overlapping regions in memory map: ignoring"));
1747 VEC_free (mem_region_s, result);
1750 last_one = this_one;
1757 target_flash_erase (ULONGEST address, LONGEST length)
1759 struct target_ops *t;
1761 for (t = current_target.beneath; t != NULL; t = t->beneath)
1762 if (t->to_flash_erase != NULL)
1765 fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n",
1766 hex_string (address), phex (length, 0));
1767 t->to_flash_erase (t, address, length);
1775 target_flash_done (void)
1777 struct target_ops *t;
1779 for (t = current_target.beneath; t != NULL; t = t->beneath)
1780 if (t->to_flash_done != NULL)
1783 fprintf_unfiltered (gdb_stdlog, "target_flash_done\n");
1784 t->to_flash_done (t);
1792 show_trust_readonly (struct ui_file *file, int from_tty,
1793 struct cmd_list_element *c, const char *value)
1795 fprintf_filtered (file,
1796 _("Mode for reading from readonly sections is %s.\n"),
1800 /* More generic transfers. */
1802 static enum target_xfer_status
1803 default_xfer_partial (struct target_ops *ops, enum target_object object,
1804 const char *annex, gdb_byte *readbuf,
1805 const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
1806 ULONGEST *xfered_len)
1808 if (object == TARGET_OBJECT_MEMORY
1809 && ops->deprecated_xfer_memory != NULL)
1810 /* If available, fall back to the target's
1811 "deprecated_xfer_memory" method. */
1816 if (writebuf != NULL)
1818 void *buffer = xmalloc (len);
1819 struct cleanup *cleanup = make_cleanup (xfree, buffer);
1821 memcpy (buffer, writebuf, len);
1822 xfered = ops->deprecated_xfer_memory (offset, buffer, len,
1823 1/*write*/, NULL, ops);
1824 do_cleanups (cleanup);
1826 if (readbuf != NULL)
1827 xfered = ops->deprecated_xfer_memory (offset, readbuf, len,
1828 0/*read*/, NULL, ops);
1831 *xfered_len = (ULONGEST) xfered;
1832 return TARGET_XFER_E_IO;
1834 else if (xfered == 0 && errno == 0)
1835 /* "deprecated_xfer_memory" uses 0, cross checked against
1836 ERRNO as one indication of an error. */
1837 return TARGET_XFER_EOF;
1839 return TARGET_XFER_E_IO;
1843 gdb_assert (ops->beneath != NULL);
1844 return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
1845 readbuf, writebuf, offset, len,
1850 /* Target vector read/write partial wrapper functions. */
1852 static enum target_xfer_status
1853 target_read_partial (struct target_ops *ops,
1854 enum target_object object,
1855 const char *annex, gdb_byte *buf,
1856 ULONGEST offset, ULONGEST len,
1857 ULONGEST *xfered_len)
1859 return target_xfer_partial (ops, object, annex, buf, NULL, offset, len,
1863 static enum target_xfer_status
1864 target_write_partial (struct target_ops *ops,
1865 enum target_object object,
1866 const char *annex, const gdb_byte *buf,
1867 ULONGEST offset, LONGEST len, ULONGEST *xfered_len)
1869 return target_xfer_partial (ops, object, annex, NULL, buf, offset, len,
1873 /* Wrappers to perform the full transfer. */
1875 /* For docs on target_read see target.h. */
1878 target_read (struct target_ops *ops,
1879 enum target_object object,
1880 const char *annex, gdb_byte *buf,
1881 ULONGEST offset, LONGEST len)
1885 while (xfered < len)
1887 ULONGEST xfered_len;
1888 enum target_xfer_status status;
1890 status = target_read_partial (ops, object, annex,
1891 (gdb_byte *) buf + xfered,
1892 offset + xfered, len - xfered,
1895 /* Call an observer, notifying them of the xfer progress? */
1896 if (status == TARGET_XFER_EOF)
1898 else if (status == TARGET_XFER_OK)
1900 xfered += xfered_len;
1910 /* Assuming that the entire [begin, end) range of memory cannot be
1911 read, try to read whatever subrange is possible to read.
1913 The function returns, in RESULT, either zero or one memory block.
1914 If there's a readable subrange at the beginning, it is completely
1915 read and returned. Any further readable subrange will not be read.
1916 Otherwise, if there's a readable subrange at the end, it will be
1917 completely read and returned. Any readable subranges before it
1918 (obviously, not starting at the beginning), will be ignored. In
1919 other cases -- either no readable subrange, or readable subrange(s)
1920 that is neither at the beginning, or end, nothing is returned.
1922 The purpose of this function is to handle a read across a boundary
1923 of accessible memory in a case when memory map is not available.
1924 The above restrictions are fine for this case, but will give
1925 incorrect results if the memory is 'patchy'. However, supporting
1926 'patchy' memory would require trying to read every single byte,
1927 and it seems unacceptable solution. Explicit memory map is
1928 recommended for this case -- and target_read_memory_robust will
1929 take care of reading multiple ranges then. */
1932 read_whatever_is_readable (struct target_ops *ops,
1933 ULONGEST begin, ULONGEST end,
1934 VEC(memory_read_result_s) **result)
1936 gdb_byte *buf = xmalloc (end - begin);
1937 ULONGEST current_begin = begin;
1938 ULONGEST current_end = end;
1940 memory_read_result_s r;
1941 ULONGEST xfered_len;
1943 /* If we previously failed to read 1 byte, nothing can be done here. */
1944 if (end - begin <= 1)
1950 /* Check that either first or the last byte is readable, and give up
1951 if not. This heuristic is meant to permit reading accessible memory
1952 at the boundary of accessible region. */
1953 if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL,
1954 buf, begin, 1, &xfered_len) == TARGET_XFER_OK)
1959 else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL,
1960 buf + (end-begin) - 1, end - 1, 1,
1961 &xfered_len) == TARGET_XFER_OK)
1972 /* Loop invariant is that the [current_begin, current_end) was previously
1973 found to be not readable as a whole.
1975 Note loop condition -- if the range has 1 byte, we can't divide the range
1976 so there's no point trying further. */
1977 while (current_end - current_begin > 1)
1979 ULONGEST first_half_begin, first_half_end;
1980 ULONGEST second_half_begin, second_half_end;
1982 ULONGEST middle = current_begin + (current_end - current_begin)/2;
1986 first_half_begin = current_begin;
1987 first_half_end = middle;
1988 second_half_begin = middle;
1989 second_half_end = current_end;
1993 first_half_begin = middle;
1994 first_half_end = current_end;
1995 second_half_begin = current_begin;
1996 second_half_end = middle;
1999 xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2000 buf + (first_half_begin - begin),
2002 first_half_end - first_half_begin);
2004 if (xfer == first_half_end - first_half_begin)
2006 /* This half reads up fine. So, the error must be in the
2008 current_begin = second_half_begin;
2009 current_end = second_half_end;
2013 /* This half is not readable. Because we've tried one byte, we
2014 know some part of this half if actually redable. Go to the next
2015 iteration to divide again and try to read.
2017 We don't handle the other half, because this function only tries
2018 to read a single readable subrange. */
2019 current_begin = first_half_begin;
2020 current_end = first_half_end;
2026 /* The [begin, current_begin) range has been read. */
2028 r.end = current_begin;
2033 /* The [current_end, end) range has been read. */
2034 LONGEST rlen = end - current_end;
2036 r.data = xmalloc (rlen);
2037 memcpy (r.data, buf + current_end - begin, rlen);
2038 r.begin = current_end;
2042 VEC_safe_push(memory_read_result_s, (*result), &r);
2046 free_memory_read_result_vector (void *x)
2048 VEC(memory_read_result_s) *v = x;
2049 memory_read_result_s *current;
2052 for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix)
2054 xfree (current->data);
2056 VEC_free (memory_read_result_s, v);
2059 VEC(memory_read_result_s) *
2060 read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len)
2062 VEC(memory_read_result_s) *result = 0;
2065 while (xfered < len)
2067 struct mem_region *region = lookup_mem_region (offset + xfered);
2070 /* If there is no explicit region, a fake one should be created. */
2071 gdb_assert (region);
2073 if (region->hi == 0)
2074 rlen = len - xfered;
2076 rlen = region->hi - offset;
2078 if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO)
2080 /* Cannot read this region. Note that we can end up here only
2081 if the region is explicitly marked inaccessible, or
2082 'inaccessible-by-default' is in effect. */
2087 LONGEST to_read = min (len - xfered, rlen);
2088 gdb_byte *buffer = (gdb_byte *)xmalloc (to_read);
2090 LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2091 (gdb_byte *) buffer,
2092 offset + xfered, to_read);
2093 /* Call an observer, notifying them of the xfer progress? */
2096 /* Got an error reading full chunk. See if maybe we can read
2099 read_whatever_is_readable (ops, offset + xfered,
2100 offset + xfered + to_read, &result);
2105 struct memory_read_result r;
2107 r.begin = offset + xfered;
2108 r.end = r.begin + xfer;
2109 VEC_safe_push (memory_read_result_s, result, &r);
2119 /* An alternative to target_write with progress callbacks. */
2122 target_write_with_progress (struct target_ops *ops,
2123 enum target_object object,
2124 const char *annex, const gdb_byte *buf,
2125 ULONGEST offset, LONGEST len,
2126 void (*progress) (ULONGEST, void *), void *baton)
2130 /* Give the progress callback a chance to set up. */
2132 (*progress) (0, baton);
2134 while (xfered < len)
2136 ULONGEST xfered_len;
2137 enum target_xfer_status status;
2139 status = target_write_partial (ops, object, annex,
2140 (gdb_byte *) buf + xfered,
2141 offset + xfered, len - xfered,
2144 if (status == TARGET_XFER_EOF)
2146 if (TARGET_XFER_STATUS_ERROR_P (status))
2149 gdb_assert (status == TARGET_XFER_OK);
2151 (*progress) (xfered_len, baton);
2153 xfered += xfered_len;
2159 /* For docs on target_write see target.h. */
2162 target_write (struct target_ops *ops,
2163 enum target_object object,
2164 const char *annex, const gdb_byte *buf,
2165 ULONGEST offset, LONGEST len)
2167 return target_write_with_progress (ops, object, annex, buf, offset, len,
2171 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2172 the size of the transferred data. PADDING additional bytes are
2173 available in *BUF_P. This is a helper function for
2174 target_read_alloc; see the declaration of that function for more
2178 target_read_alloc_1 (struct target_ops *ops, enum target_object object,
2179 const char *annex, gdb_byte **buf_p, int padding)
2181 size_t buf_alloc, buf_pos;
2184 /* This function does not have a length parameter; it reads the
2185 entire OBJECT). Also, it doesn't support objects fetched partly
2186 from one target and partly from another (in a different stratum,
2187 e.g. a core file and an executable). Both reasons make it
2188 unsuitable for reading memory. */
2189 gdb_assert (object != TARGET_OBJECT_MEMORY);
2191 /* Start by reading up to 4K at a time. The target will throttle
2192 this number down if necessary. */
2194 buf = xmalloc (buf_alloc);
2198 ULONGEST xfered_len;
2199 enum target_xfer_status status;
2201 status = target_read_partial (ops, object, annex, &buf[buf_pos],
2202 buf_pos, buf_alloc - buf_pos - padding,
2205 if (status == TARGET_XFER_EOF)
2207 /* Read all there was. */
2214 else if (status != TARGET_XFER_OK)
2216 /* An error occurred. */
2218 return TARGET_XFER_E_IO;
2221 buf_pos += xfered_len;
2223 /* If the buffer is filling up, expand it. */
2224 if (buf_alloc < buf_pos * 2)
2227 buf = xrealloc (buf, buf_alloc);
2234 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2235 the size of the transferred data. See the declaration in "target.h"
2236 function for more information about the return value. */
2239 target_read_alloc (struct target_ops *ops, enum target_object object,
2240 const char *annex, gdb_byte **buf_p)
2242 return target_read_alloc_1 (ops, object, annex, buf_p, 0);
2245 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2246 returned as a string, allocated using xmalloc. If an error occurs
2247 or the transfer is unsupported, NULL is returned. Empty objects
2248 are returned as allocated but empty strings. A warning is issued
2249 if the result contains any embedded NUL bytes. */
2252 target_read_stralloc (struct target_ops *ops, enum target_object object,
2257 LONGEST i, transferred;
2259 transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1);
2260 bufstr = (char *) buffer;
2262 if (transferred < 0)
2265 if (transferred == 0)
2266 return xstrdup ("");
2268 bufstr[transferred] = 0;
2270 /* Check for embedded NUL bytes; but allow trailing NULs. */
2271 for (i = strlen (bufstr); i < transferred; i++)
2274 warning (_("target object %d, annex %s, "
2275 "contained unexpected null characters"),
2276 (int) object, annex ? annex : "(none)");
2283 /* Memory transfer methods. */
2286 get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf,
2289 /* This method is used to read from an alternate, non-current
2290 target. This read must bypass the overlay support (as symbols
2291 don't match this target), and GDB's internal cache (wrong cache
2292 for this target). */
2293 if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len)
2295 memory_error (TARGET_XFER_E_IO, addr);
2299 get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr,
2300 int len, enum bfd_endian byte_order)
2302 gdb_byte buf[sizeof (ULONGEST)];
2304 gdb_assert (len <= sizeof (buf));
2305 get_target_memory (ops, addr, buf, len);
2306 return extract_unsigned_integer (buf, len, byte_order);
2312 target_insert_breakpoint (struct gdbarch *gdbarch,
2313 struct bp_target_info *bp_tgt)
2315 if (!may_insert_breakpoints)
2317 warning (_("May not insert breakpoints"));
2321 return current_target.to_insert_breakpoint (¤t_target,
2328 target_remove_breakpoint (struct gdbarch *gdbarch,
2329 struct bp_target_info *bp_tgt)
2331 /* This is kind of a weird case to handle, but the permission might
2332 have been changed after breakpoints were inserted - in which case
2333 we should just take the user literally and assume that any
2334 breakpoints should be left in place. */
2335 if (!may_insert_breakpoints)
2337 warning (_("May not remove breakpoints"));
2341 return current_target.to_remove_breakpoint (¤t_target,
2346 target_info (char *args, int from_tty)
2348 struct target_ops *t;
2349 int has_all_mem = 0;
2351 if (symfile_objfile != NULL)
2352 printf_unfiltered (_("Symbols from \"%s\".\n"),
2353 objfile_name (symfile_objfile));
2355 for (t = target_stack; t != NULL; t = t->beneath)
2357 if (!(*t->to_has_memory) (t))
2360 if ((int) (t->to_stratum) <= (int) dummy_stratum)
2363 printf_unfiltered (_("\tWhile running this, "
2364 "GDB does not access memory from...\n"));
2365 printf_unfiltered ("%s:\n", t->to_longname);
2366 (t->to_files_info) (t);
2367 has_all_mem = (*t->to_has_all_memory) (t);
2371 /* This function is called before any new inferior is created, e.g.
2372 by running a program, attaching, or connecting to a target.
2373 It cleans up any state from previous invocations which might
2374 change between runs. This is a subset of what target_preopen
2375 resets (things which might change between targets). */
2378 target_pre_inferior (int from_tty)
2380 /* Clear out solib state. Otherwise the solib state of the previous
2381 inferior might have survived and is entirely wrong for the new
2382 target. This has been observed on GNU/Linux using glibc 2.3. How
2394 Cannot access memory at address 0xdeadbeef
2397 /* In some OSs, the shared library list is the same/global/shared
2398 across inferiors. If code is shared between processes, so are
2399 memory regions and features. */
2400 if (!gdbarch_has_global_solist (target_gdbarch ()))
2402 no_shared_libraries (NULL, from_tty);
2404 invalidate_target_mem_regions ();
2406 target_clear_description ();
2409 agent_capability_invalidate ();
2412 /* Callback for iterate_over_inferiors. Gets rid of the given
2416 dispose_inferior (struct inferior *inf, void *args)
2418 struct thread_info *thread;
2420 thread = any_thread_of_process (inf->pid);
2423 switch_to_thread (thread->ptid);
2425 /* Core inferiors actually should be detached, not killed. */
2426 if (target_has_execution)
2429 target_detach (NULL, 0);
2435 /* This is to be called by the open routine before it does
2439 target_preopen (int from_tty)
2443 if (have_inferiors ())
2446 || !have_live_inferiors ()
2447 || query (_("A program is being debugged already. Kill it? ")))
2448 iterate_over_inferiors (dispose_inferior, NULL);
2450 error (_("Program not killed."));
2453 /* Calling target_kill may remove the target from the stack. But if
2454 it doesn't (which seems like a win for UDI), remove it now. */
2455 /* Leave the exec target, though. The user may be switching from a
2456 live process to a core of the same program. */
2457 pop_all_targets_above (file_stratum);
2459 target_pre_inferior (from_tty);
2462 /* Detach a target after doing deferred register stores. */
2465 target_detach (const char *args, int from_tty)
2467 struct target_ops* t;
2469 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2470 /* Don't remove global breakpoints here. They're removed on
2471 disconnection from the target. */
2474 /* If we're in breakpoints-always-inserted mode, have to remove
2475 them before detaching. */
2476 remove_breakpoints_pid (ptid_get_pid (inferior_ptid));
2478 prepare_for_detach ();
2480 current_target.to_detach (¤t_target, args, from_tty);
2482 fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n",
2487 target_disconnect (char *args, int from_tty)
2489 struct target_ops *t;
2491 /* If we're in breakpoints-always-inserted mode or if breakpoints
2492 are global across processes, we have to remove them before
2494 remove_breakpoints ();
2496 for (t = current_target.beneath; t != NULL; t = t->beneath)
2497 if (t->to_disconnect != NULL)
2500 fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n",
2502 t->to_disconnect (t, args, from_tty);
2510 target_wait (ptid_t ptid, struct target_waitstatus *status, int options)
2512 struct target_ops *t;
2513 ptid_t retval = (current_target.to_wait) (¤t_target, ptid,
2518 char *status_string;
2519 char *options_string;
2521 status_string = target_waitstatus_to_string (status);
2522 options_string = target_options_to_string (options);
2523 fprintf_unfiltered (gdb_stdlog,
2524 "target_wait (%d, status, options={%s})"
2526 ptid_get_pid (ptid), options_string,
2527 ptid_get_pid (retval), status_string);
2528 xfree (status_string);
2529 xfree (options_string);
2536 target_pid_to_str (ptid_t ptid)
2538 struct target_ops *t;
2540 for (t = current_target.beneath; t != NULL; t = t->beneath)
2542 if (t->to_pid_to_str != NULL)
2543 return (*t->to_pid_to_str) (t, ptid);
2546 return normal_pid_to_str (ptid);
2550 target_thread_name (struct thread_info *info)
2552 return current_target.to_thread_name (¤t_target, info);
2556 target_resume (ptid_t ptid, int step, enum gdb_signal signal)
2558 struct target_ops *t;
2560 target_dcache_invalidate ();
2562 current_target.to_resume (¤t_target, ptid, step, signal);
2564 fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n",
2565 ptid_get_pid (ptid),
2566 step ? "step" : "continue",
2567 gdb_signal_to_name (signal));
2569 registers_changed_ptid (ptid);
2570 set_executing (ptid, 1);
2571 set_running (ptid, 1);
2572 clear_inline_frame_state (ptid);
2576 target_pass_signals (int numsigs, unsigned char *pass_signals)
2578 struct target_ops *t;
2580 for (t = current_target.beneath; t != NULL; t = t->beneath)
2582 if (t->to_pass_signals != NULL)
2588 fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {",
2591 for (i = 0; i < numsigs; i++)
2592 if (pass_signals[i])
2593 fprintf_unfiltered (gdb_stdlog, " %s",
2594 gdb_signal_to_name (i));
2596 fprintf_unfiltered (gdb_stdlog, " })\n");
2599 (*t->to_pass_signals) (t, numsigs, pass_signals);
2606 target_program_signals (int numsigs, unsigned char *program_signals)
2608 struct target_ops *t;
2610 for (t = current_target.beneath; t != NULL; t = t->beneath)
2612 if (t->to_program_signals != NULL)
2618 fprintf_unfiltered (gdb_stdlog, "target_program_signals (%d, {",
2621 for (i = 0; i < numsigs; i++)
2622 if (program_signals[i])
2623 fprintf_unfiltered (gdb_stdlog, " %s",
2624 gdb_signal_to_name (i));
2626 fprintf_unfiltered (gdb_stdlog, " })\n");
2629 (*t->to_program_signals) (t, numsigs, program_signals);
2635 /* Look through the list of possible targets for a target that can
2639 target_follow_fork (int follow_child, int detach_fork)
2641 struct target_ops *t;
2643 for (t = current_target.beneath; t != NULL; t = t->beneath)
2645 if (t->to_follow_fork != NULL)
2647 int retval = t->to_follow_fork (t, follow_child, detach_fork);
2650 fprintf_unfiltered (gdb_stdlog,
2651 "target_follow_fork (%d, %d) = %d\n",
2652 follow_child, detach_fork, retval);
2657 /* Some target returned a fork event, but did not know how to follow it. */
2658 internal_error (__FILE__, __LINE__,
2659 _("could not find a target to follow fork"));
2663 target_mourn_inferior (void)
2665 struct target_ops *t;
2667 for (t = current_target.beneath; t != NULL; t = t->beneath)
2669 if (t->to_mourn_inferior != NULL)
2671 t->to_mourn_inferior (t);
2673 fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n");
2675 /* We no longer need to keep handles on any of the object files.
2676 Make sure to release them to avoid unnecessarily locking any
2677 of them while we're not actually debugging. */
2678 bfd_cache_close_all ();
2684 internal_error (__FILE__, __LINE__,
2685 _("could not find a target to follow mourn inferior"));
2688 /* Look for a target which can describe architectural features, starting
2689 from TARGET. If we find one, return its description. */
2691 const struct target_desc *
2692 target_read_description (struct target_ops *target)
2694 struct target_ops *t;
2696 for (t = target; t != NULL; t = t->beneath)
2697 if (t->to_read_description != NULL)
2699 const struct target_desc *tdesc;
2701 tdesc = t->to_read_description (t);
2709 /* The default implementation of to_search_memory.
2710 This implements a basic search of memory, reading target memory and
2711 performing the search here (as opposed to performing the search in on the
2712 target side with, for example, gdbserver). */
2715 simple_search_memory (struct target_ops *ops,
2716 CORE_ADDR start_addr, ULONGEST search_space_len,
2717 const gdb_byte *pattern, ULONGEST pattern_len,
2718 CORE_ADDR *found_addrp)
2720 /* NOTE: also defined in find.c testcase. */
2721 #define SEARCH_CHUNK_SIZE 16000
2722 const unsigned chunk_size = SEARCH_CHUNK_SIZE;
2723 /* Buffer to hold memory contents for searching. */
2724 gdb_byte *search_buf;
2725 unsigned search_buf_size;
2726 struct cleanup *old_cleanups;
2728 search_buf_size = chunk_size + pattern_len - 1;
2730 /* No point in trying to allocate a buffer larger than the search space. */
2731 if (search_space_len < search_buf_size)
2732 search_buf_size = search_space_len;
2734 search_buf = malloc (search_buf_size);
2735 if (search_buf == NULL)
2736 error (_("Unable to allocate memory to perform the search."));
2737 old_cleanups = make_cleanup (free_current_contents, &search_buf);
2739 /* Prime the search buffer. */
2741 if (target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2742 search_buf, start_addr, search_buf_size) != search_buf_size)
2744 warning (_("Unable to access %s bytes of target "
2745 "memory at %s, halting search."),
2746 pulongest (search_buf_size), hex_string (start_addr));
2747 do_cleanups (old_cleanups);
2751 /* Perform the search.
2753 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2754 When we've scanned N bytes we copy the trailing bytes to the start and
2755 read in another N bytes. */
2757 while (search_space_len >= pattern_len)
2759 gdb_byte *found_ptr;
2760 unsigned nr_search_bytes = min (search_space_len, search_buf_size);
2762 found_ptr = memmem (search_buf, nr_search_bytes,
2763 pattern, pattern_len);
2765 if (found_ptr != NULL)
2767 CORE_ADDR found_addr = start_addr + (found_ptr - search_buf);
2769 *found_addrp = found_addr;
2770 do_cleanups (old_cleanups);
2774 /* Not found in this chunk, skip to next chunk. */
2776 /* Don't let search_space_len wrap here, it's unsigned. */
2777 if (search_space_len >= chunk_size)
2778 search_space_len -= chunk_size;
2780 search_space_len = 0;
2782 if (search_space_len >= pattern_len)
2784 unsigned keep_len = search_buf_size - chunk_size;
2785 CORE_ADDR read_addr = start_addr + chunk_size + keep_len;
2788 /* Copy the trailing part of the previous iteration to the front
2789 of the buffer for the next iteration. */
2790 gdb_assert (keep_len == pattern_len - 1);
2791 memcpy (search_buf, search_buf + chunk_size, keep_len);
2793 nr_to_read = min (search_space_len - keep_len, chunk_size);
2795 if (target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2796 search_buf + keep_len, read_addr,
2797 nr_to_read) != nr_to_read)
2799 warning (_("Unable to access %s bytes of target "
2800 "memory at %s, halting search."),
2801 plongest (nr_to_read),
2802 hex_string (read_addr));
2803 do_cleanups (old_cleanups);
2807 start_addr += chunk_size;
2813 do_cleanups (old_cleanups);
2817 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2818 sequence of bytes in PATTERN with length PATTERN_LEN.
2820 The result is 1 if found, 0 if not found, and -1 if there was an error
2821 requiring halting of the search (e.g. memory read error).
2822 If the pattern is found the address is recorded in FOUND_ADDRP. */
2825 target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len,
2826 const gdb_byte *pattern, ULONGEST pattern_len,
2827 CORE_ADDR *found_addrp)
2829 struct target_ops *t;
2832 /* We don't use INHERIT to set current_target.to_search_memory,
2833 so we have to scan the target stack and handle targetdebug
2837 fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n",
2838 hex_string (start_addr));
2840 for (t = current_target.beneath; t != NULL; t = t->beneath)
2841 if (t->to_search_memory != NULL)
2846 found = t->to_search_memory (t, start_addr, search_space_len,
2847 pattern, pattern_len, found_addrp);
2851 /* If a special version of to_search_memory isn't available, use the
2853 found = simple_search_memory (current_target.beneath,
2854 start_addr, search_space_len,
2855 pattern, pattern_len, found_addrp);
2859 fprintf_unfiltered (gdb_stdlog, " = %d\n", found);
2864 /* Look through the currently pushed targets. If none of them will
2865 be able to restart the currently running process, issue an error
2869 target_require_runnable (void)
2871 struct target_ops *t;
2873 for (t = target_stack; t != NULL; t = t->beneath)
2875 /* If this target knows how to create a new program, then
2876 assume we will still be able to after killing the current
2877 one. Either killing and mourning will not pop T, or else
2878 find_default_run_target will find it again. */
2879 if (t->to_create_inferior != NULL)
2882 /* Do not worry about thread_stratum targets that can not
2883 create inferiors. Assume they will be pushed again if
2884 necessary, and continue to the process_stratum. */
2885 if (t->to_stratum == thread_stratum
2886 || t->to_stratum == arch_stratum)
2889 error (_("The \"%s\" target does not support \"run\". "
2890 "Try \"help target\" or \"continue\"."),
2894 /* This function is only called if the target is running. In that
2895 case there should have been a process_stratum target and it
2896 should either know how to create inferiors, or not... */
2897 internal_error (__FILE__, __LINE__, _("No targets found"));
2900 /* Look through the list of possible targets for a target that can
2901 execute a run or attach command without any other data. This is
2902 used to locate the default process stratum.
2904 If DO_MESG is not NULL, the result is always valid (error() is
2905 called for errors); else, return NULL on error. */
2907 static struct target_ops *
2908 find_default_run_target (char *do_mesg)
2910 struct target_ops **t;
2911 struct target_ops *runable = NULL;
2916 for (t = target_structs; t < target_structs + target_struct_size;
2919 if ((*t)->to_can_run && target_can_run (*t))
2929 error (_("Don't know how to %s. Try \"help target\"."), do_mesg);
2938 find_default_attach (struct target_ops *ops, char *args, int from_tty)
2940 struct target_ops *t;
2942 t = find_default_run_target ("attach");
2943 (t->to_attach) (t, args, from_tty);
2948 find_default_create_inferior (struct target_ops *ops,
2949 char *exec_file, char *allargs, char **env,
2952 struct target_ops *t;
2954 t = find_default_run_target ("run");
2955 (t->to_create_inferior) (t, exec_file, allargs, env, from_tty);
2960 find_default_can_async_p (struct target_ops *ignore)
2962 struct target_ops *t;
2964 /* This may be called before the target is pushed on the stack;
2965 look for the default process stratum. If there's none, gdb isn't
2966 configured with a native debugger, and target remote isn't
2968 t = find_default_run_target (NULL);
2969 if (t && t->to_can_async_p != delegate_can_async_p)
2970 return (t->to_can_async_p) (t);
2975 find_default_is_async_p (struct target_ops *ignore)
2977 struct target_ops *t;
2979 /* This may be called before the target is pushed on the stack;
2980 look for the default process stratum. If there's none, gdb isn't
2981 configured with a native debugger, and target remote isn't
2983 t = find_default_run_target (NULL);
2984 if (t && t->to_is_async_p != delegate_is_async_p)
2985 return (t->to_is_async_p) (t);
2990 find_default_supports_non_stop (struct target_ops *self)
2992 struct target_ops *t;
2994 t = find_default_run_target (NULL);
2995 if (t && t->to_supports_non_stop)
2996 return (t->to_supports_non_stop) (t);
3001 target_supports_non_stop (void)
3003 struct target_ops *t;
3005 for (t = ¤t_target; t != NULL; t = t->beneath)
3006 if (t->to_supports_non_stop)
3007 return t->to_supports_non_stop (t);
3012 /* Implement the "info proc" command. */
3015 target_info_proc (char *args, enum info_proc_what what)
3017 struct target_ops *t;
3019 /* If we're already connected to something that can get us OS
3020 related data, use it. Otherwise, try using the native
3022 if (current_target.to_stratum >= process_stratum)
3023 t = current_target.beneath;
3025 t = find_default_run_target (NULL);
3027 for (; t != NULL; t = t->beneath)
3029 if (t->to_info_proc != NULL)
3031 t->to_info_proc (t, args, what);
3034 fprintf_unfiltered (gdb_stdlog,
3035 "target_info_proc (\"%s\", %d)\n", args, what);
3045 find_default_supports_disable_randomization (struct target_ops *self)
3047 struct target_ops *t;
3049 t = find_default_run_target (NULL);
3050 if (t && t->to_supports_disable_randomization)
3051 return (t->to_supports_disable_randomization) (t);
3056 target_supports_disable_randomization (void)
3058 struct target_ops *t;
3060 for (t = ¤t_target; t != NULL; t = t->beneath)
3061 if (t->to_supports_disable_randomization)
3062 return t->to_supports_disable_randomization (t);
3068 target_get_osdata (const char *type)
3070 struct target_ops *t;
3072 /* If we're already connected to something that can get us OS
3073 related data, use it. Otherwise, try using the native
3075 if (current_target.to_stratum >= process_stratum)
3076 t = current_target.beneath;
3078 t = find_default_run_target ("get OS data");
3083 return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type);
3086 /* Determine the current address space of thread PTID. */
3088 struct address_space *
3089 target_thread_address_space (ptid_t ptid)
3091 struct address_space *aspace;
3092 struct inferior *inf;
3093 struct target_ops *t;
3095 for (t = current_target.beneath; t != NULL; t = t->beneath)
3097 if (t->to_thread_address_space != NULL)
3099 aspace = t->to_thread_address_space (t, ptid);
3100 gdb_assert (aspace);
3103 fprintf_unfiltered (gdb_stdlog,
3104 "target_thread_address_space (%s) = %d\n",
3105 target_pid_to_str (ptid),
3106 address_space_num (aspace));
3111 /* Fall-back to the "main" address space of the inferior. */
3112 inf = find_inferior_pid (ptid_get_pid (ptid));
3114 if (inf == NULL || inf->aspace == NULL)
3115 internal_error (__FILE__, __LINE__,
3116 _("Can't determine the current "
3117 "address space of thread %s\n"),
3118 target_pid_to_str (ptid));
3124 /* Target file operations. */
3126 static struct target_ops *
3127 default_fileio_target (void)
3129 /* If we're already connected to something that can perform
3130 file I/O, use it. Otherwise, try using the native target. */
3131 if (current_target.to_stratum >= process_stratum)
3132 return current_target.beneath;
3134 return find_default_run_target ("file I/O");
3137 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3138 target file descriptor, or -1 if an error occurs (and set
3141 target_fileio_open (const char *filename, int flags, int mode,
3144 struct target_ops *t;
3146 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3148 if (t->to_fileio_open != NULL)
3150 int fd = t->to_fileio_open (t, filename, flags, mode, target_errno);
3153 fprintf_unfiltered (gdb_stdlog,
3154 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3155 filename, flags, mode,
3156 fd, fd != -1 ? 0 : *target_errno);
3161 *target_errno = FILEIO_ENOSYS;
3165 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3166 Return the number of bytes written, or -1 if an error occurs
3167 (and set *TARGET_ERRNO). */
3169 target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len,
3170 ULONGEST offset, int *target_errno)
3172 struct target_ops *t;
3174 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3176 if (t->to_fileio_pwrite != NULL)
3178 int ret = t->to_fileio_pwrite (t, fd, write_buf, len, offset,
3182 fprintf_unfiltered (gdb_stdlog,
3183 "target_fileio_pwrite (%d,...,%d,%s) "
3185 fd, len, pulongest (offset),
3186 ret, ret != -1 ? 0 : *target_errno);
3191 *target_errno = FILEIO_ENOSYS;
3195 /* Read up to LEN bytes FD on the target into READ_BUF.
3196 Return the number of bytes read, or -1 if an error occurs
3197 (and set *TARGET_ERRNO). */
3199 target_fileio_pread (int fd, gdb_byte *read_buf, int len,
3200 ULONGEST offset, int *target_errno)
3202 struct target_ops *t;
3204 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3206 if (t->to_fileio_pread != NULL)
3208 int ret = t->to_fileio_pread (t, fd, read_buf, len, offset,
3212 fprintf_unfiltered (gdb_stdlog,
3213 "target_fileio_pread (%d,...,%d,%s) "
3215 fd, len, pulongest (offset),
3216 ret, ret != -1 ? 0 : *target_errno);
3221 *target_errno = FILEIO_ENOSYS;
3225 /* Close FD on the target. Return 0, or -1 if an error occurs
3226 (and set *TARGET_ERRNO). */
3228 target_fileio_close (int fd, int *target_errno)
3230 struct target_ops *t;
3232 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3234 if (t->to_fileio_close != NULL)
3236 int ret = t->to_fileio_close (t, fd, target_errno);
3239 fprintf_unfiltered (gdb_stdlog,
3240 "target_fileio_close (%d) = %d (%d)\n",
3241 fd, ret, ret != -1 ? 0 : *target_errno);
3246 *target_errno = FILEIO_ENOSYS;
3250 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3251 occurs (and set *TARGET_ERRNO). */
3253 target_fileio_unlink (const char *filename, int *target_errno)
3255 struct target_ops *t;
3257 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3259 if (t->to_fileio_unlink != NULL)
3261 int ret = t->to_fileio_unlink (t, filename, target_errno);
3264 fprintf_unfiltered (gdb_stdlog,
3265 "target_fileio_unlink (%s) = %d (%d)\n",
3266 filename, ret, ret != -1 ? 0 : *target_errno);
3271 *target_errno = FILEIO_ENOSYS;
3275 /* Read value of symbolic link FILENAME on the target. Return a
3276 null-terminated string allocated via xmalloc, or NULL if an error
3277 occurs (and set *TARGET_ERRNO). */
3279 target_fileio_readlink (const char *filename, int *target_errno)
3281 struct target_ops *t;
3283 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3285 if (t->to_fileio_readlink != NULL)
3287 char *ret = t->to_fileio_readlink (t, filename, target_errno);
3290 fprintf_unfiltered (gdb_stdlog,
3291 "target_fileio_readlink (%s) = %s (%d)\n",
3292 filename, ret? ret : "(nil)",
3293 ret? 0 : *target_errno);
3298 *target_errno = FILEIO_ENOSYS;
3303 target_fileio_close_cleanup (void *opaque)
3305 int fd = *(int *) opaque;
3308 target_fileio_close (fd, &target_errno);
3311 /* Read target file FILENAME. Store the result in *BUF_P and
3312 return the size of the transferred data. PADDING additional bytes are
3313 available in *BUF_P. This is a helper function for
3314 target_fileio_read_alloc; see the declaration of that function for more
3318 target_fileio_read_alloc_1 (const char *filename,
3319 gdb_byte **buf_p, int padding)
3321 struct cleanup *close_cleanup;
3322 size_t buf_alloc, buf_pos;
3328 fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno);
3332 close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd);
3334 /* Start by reading up to 4K at a time. The target will throttle
3335 this number down if necessary. */
3337 buf = xmalloc (buf_alloc);
3341 n = target_fileio_pread (fd, &buf[buf_pos],
3342 buf_alloc - buf_pos - padding, buf_pos,
3346 /* An error occurred. */
3347 do_cleanups (close_cleanup);
3353 /* Read all there was. */
3354 do_cleanups (close_cleanup);
3364 /* If the buffer is filling up, expand it. */
3365 if (buf_alloc < buf_pos * 2)
3368 buf = xrealloc (buf, buf_alloc);
3375 /* Read target file FILENAME. Store the result in *BUF_P and return
3376 the size of the transferred data. See the declaration in "target.h"
3377 function for more information about the return value. */
3380 target_fileio_read_alloc (const char *filename, gdb_byte **buf_p)
3382 return target_fileio_read_alloc_1 (filename, buf_p, 0);
3385 /* Read target file FILENAME. The result is NUL-terminated and
3386 returned as a string, allocated using xmalloc. If an error occurs
3387 or the transfer is unsupported, NULL is returned. Empty objects
3388 are returned as allocated but empty strings. A warning is issued
3389 if the result contains any embedded NUL bytes. */
3392 target_fileio_read_stralloc (const char *filename)
3396 LONGEST i, transferred;
3398 transferred = target_fileio_read_alloc_1 (filename, &buffer, 1);
3399 bufstr = (char *) buffer;
3401 if (transferred < 0)
3404 if (transferred == 0)
3405 return xstrdup ("");
3407 bufstr[transferred] = 0;
3409 /* Check for embedded NUL bytes; but allow trailing NULs. */
3410 for (i = strlen (bufstr); i < transferred; i++)
3413 warning (_("target file %s "
3414 "contained unexpected null characters"),
3424 default_region_ok_for_hw_watchpoint (struct target_ops *self,
3425 CORE_ADDR addr, int len)
3427 return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT);
3431 default_watchpoint_addr_within_range (struct target_ops *target,
3433 CORE_ADDR start, int length)
3435 return addr >= start && addr < start + length;
3438 static struct gdbarch *
3439 default_thread_architecture (struct target_ops *ops, ptid_t ptid)
3441 return target_gdbarch ();
3451 * Find the next target down the stack from the specified target.
3455 find_target_beneath (struct target_ops *t)
3463 find_target_at (enum strata stratum)
3465 struct target_ops *t;
3467 for (t = current_target.beneath; t != NULL; t = t->beneath)
3468 if (t->to_stratum == stratum)
3475 /* The inferior process has died. Long live the inferior! */
3478 generic_mourn_inferior (void)
3482 ptid = inferior_ptid;
3483 inferior_ptid = null_ptid;
3485 /* Mark breakpoints uninserted in case something tries to delete a
3486 breakpoint while we delete the inferior's threads (which would
3487 fail, since the inferior is long gone). */
3488 mark_breakpoints_out ();
3490 if (!ptid_equal (ptid, null_ptid))
3492 int pid = ptid_get_pid (ptid);
3493 exit_inferior (pid);
3496 /* Note this wipes step-resume breakpoints, so needs to be done
3497 after exit_inferior, which ends up referencing the step-resume
3498 breakpoints through clear_thread_inferior_resources. */
3499 breakpoint_init_inferior (inf_exited);
3501 registers_changed ();
3503 reopen_exec_file ();
3504 reinit_frame_cache ();
3506 if (deprecated_detach_hook)
3507 deprecated_detach_hook ();
3510 /* Convert a normal process ID to a string. Returns the string in a
3514 normal_pid_to_str (ptid_t ptid)
3516 static char buf[32];
3518 xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid));
3523 dummy_pid_to_str (struct target_ops *ops, ptid_t ptid)
3525 return normal_pid_to_str (ptid);
3528 /* Error-catcher for target_find_memory_regions. */
3530 dummy_find_memory_regions (struct target_ops *self,
3531 find_memory_region_ftype ignore1, void *ignore2)
3533 error (_("Command not implemented for this target."));
3537 /* Error-catcher for target_make_corefile_notes. */
3539 dummy_make_corefile_notes (struct target_ops *self,
3540 bfd *ignore1, int *ignore2)
3542 error (_("Command not implemented for this target."));
3546 /* Set up the handful of non-empty slots needed by the dummy target
3550 init_dummy_target (void)
3552 dummy_target.to_shortname = "None";
3553 dummy_target.to_longname = "None";
3554 dummy_target.to_doc = "";
3555 dummy_target.to_create_inferior = find_default_create_inferior;
3556 dummy_target.to_supports_non_stop = find_default_supports_non_stop;
3557 dummy_target.to_supports_disable_randomization
3558 = find_default_supports_disable_randomization;
3559 dummy_target.to_pid_to_str = dummy_pid_to_str;
3560 dummy_target.to_stratum = dummy_stratum;
3561 dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero;
3562 dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero;
3563 dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero;
3564 dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero;
3565 dummy_target.to_has_execution
3566 = (int (*) (struct target_ops *, ptid_t)) return_zero;
3567 dummy_target.to_magic = OPS_MAGIC;
3569 install_dummy_methods (&dummy_target);
3573 debug_to_open (char *args, int from_tty)
3575 debug_target.to_open (args, from_tty);
3577 fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty);
3581 target_close (struct target_ops *targ)
3583 gdb_assert (!target_is_pushed (targ));
3585 if (targ->to_xclose != NULL)
3586 targ->to_xclose (targ);
3587 else if (targ->to_close != NULL)
3588 targ->to_close (targ);
3591 fprintf_unfiltered (gdb_stdlog, "target_close ()\n");
3595 target_attach (char *args, int from_tty)
3597 current_target.to_attach (¤t_target, args, from_tty);
3599 fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n",
3604 target_thread_alive (ptid_t ptid)
3606 struct target_ops *t;
3608 for (t = current_target.beneath; t != NULL; t = t->beneath)
3610 if (t->to_thread_alive != NULL)
3614 retval = t->to_thread_alive (t, ptid);
3616 fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n",
3617 ptid_get_pid (ptid), retval);
3627 target_find_new_threads (void)
3629 struct target_ops *t;
3631 for (t = current_target.beneath; t != NULL; t = t->beneath)
3633 if (t->to_find_new_threads != NULL)
3635 t->to_find_new_threads (t);
3637 fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n");
3645 target_stop (ptid_t ptid)
3649 warning (_("May not interrupt or stop the target, ignoring attempt"));
3653 (*current_target.to_stop) (¤t_target, ptid);
3657 debug_to_post_attach (struct target_ops *self, int pid)
3659 debug_target.to_post_attach (&debug_target, pid);
3661 fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid);
3664 /* Concatenate ELEM to LIST, a comma separate list, and return the
3665 result. The LIST incoming argument is released. */
3668 str_comma_list_concat_elem (char *list, const char *elem)
3671 return xstrdup (elem);
3673 return reconcat (list, list, ", ", elem, (char *) NULL);
3676 /* Helper for target_options_to_string. If OPT is present in
3677 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3678 Returns the new resulting string. OPT is removed from
3682 do_option (int *target_options, char *ret,
3683 int opt, char *opt_str)
3685 if ((*target_options & opt) != 0)
3687 ret = str_comma_list_concat_elem (ret, opt_str);
3688 *target_options &= ~opt;
3695 target_options_to_string (int target_options)
3699 #define DO_TARG_OPTION(OPT) \
3700 ret = do_option (&target_options, ret, OPT, #OPT)
3702 DO_TARG_OPTION (TARGET_WNOHANG);
3704 if (target_options != 0)
3705 ret = str_comma_list_concat_elem (ret, "unknown???");
3713 debug_print_register (const char * func,
3714 struct regcache *regcache, int regno)
3716 struct gdbarch *gdbarch = get_regcache_arch (regcache);
3718 fprintf_unfiltered (gdb_stdlog, "%s ", func);
3719 if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)
3720 && gdbarch_register_name (gdbarch, regno) != NULL
3721 && gdbarch_register_name (gdbarch, regno)[0] != '\0')
3722 fprintf_unfiltered (gdb_stdlog, "(%s)",
3723 gdbarch_register_name (gdbarch, regno));
3725 fprintf_unfiltered (gdb_stdlog, "(%d)", regno);
3726 if (regno >= 0 && regno < gdbarch_num_regs (gdbarch))
3728 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
3729 int i, size = register_size (gdbarch, regno);
3730 gdb_byte buf[MAX_REGISTER_SIZE];
3732 regcache_raw_collect (regcache, regno, buf);
3733 fprintf_unfiltered (gdb_stdlog, " = ");
3734 for (i = 0; i < size; i++)
3736 fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]);
3738 if (size <= sizeof (LONGEST))
3740 ULONGEST val = extract_unsigned_integer (buf, size, byte_order);
3742 fprintf_unfiltered (gdb_stdlog, " %s %s",
3743 core_addr_to_string_nz (val), plongest (val));
3746 fprintf_unfiltered (gdb_stdlog, "\n");
3750 target_fetch_registers (struct regcache *regcache, int regno)
3752 current_target.to_fetch_registers (¤t_target, regcache, regno);
3754 debug_print_register ("target_fetch_registers", regcache, regno);
3758 target_store_registers (struct regcache *regcache, int regno)
3760 struct target_ops *t;
3762 if (!may_write_registers)
3763 error (_("Writing to registers is not allowed (regno %d)"), regno);
3765 current_target.to_store_registers (¤t_target, regcache, regno);
3768 debug_print_register ("target_store_registers", regcache, regno);
3773 target_core_of_thread (ptid_t ptid)
3775 struct target_ops *t;
3777 for (t = current_target.beneath; t != NULL; t = t->beneath)
3779 if (t->to_core_of_thread != NULL)
3781 int retval = t->to_core_of_thread (t, ptid);
3784 fprintf_unfiltered (gdb_stdlog,
3785 "target_core_of_thread (%d) = %d\n",
3786 ptid_get_pid (ptid), retval);
3795 target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size)
3797 struct target_ops *t;
3799 for (t = current_target.beneath; t != NULL; t = t->beneath)
3801 if (t->to_verify_memory != NULL)
3803 int retval = t->to_verify_memory (t, data, memaddr, size);
3806 fprintf_unfiltered (gdb_stdlog,
3807 "target_verify_memory (%s, %s) = %d\n",
3808 paddress (target_gdbarch (), memaddr),
3818 /* The documentation for this function is in its prototype declaration in
3822 target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw)
3826 ret = current_target.to_insert_mask_watchpoint (¤t_target,
3830 fprintf_unfiltered (gdb_stdlog, "\
3831 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3832 core_addr_to_string (addr),
3833 core_addr_to_string (mask), rw, ret);
3838 /* The documentation for this function is in its prototype declaration in
3842 target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw)
3846 ret = current_target.to_remove_mask_watchpoint (¤t_target,
3850 fprintf_unfiltered (gdb_stdlog, "\
3851 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3852 core_addr_to_string (addr),
3853 core_addr_to_string (mask), rw, ret);
3858 /* The documentation for this function is in its prototype declaration
3862 target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask)
3864 return current_target.to_masked_watch_num_registers (¤t_target,
3868 /* The documentation for this function is in its prototype declaration
3872 target_ranged_break_num_registers (void)
3874 return current_target.to_ranged_break_num_registers (¤t_target);
3879 struct btrace_target_info *
3880 target_enable_btrace (ptid_t ptid)
3882 struct target_ops *t;
3884 for (t = current_target.beneath; t != NULL; t = t->beneath)
3885 if (t->to_enable_btrace != NULL)
3886 return t->to_enable_btrace (t, ptid);
3895 target_disable_btrace (struct btrace_target_info *btinfo)
3897 struct target_ops *t;
3899 for (t = current_target.beneath; t != NULL; t = t->beneath)
3900 if (t->to_disable_btrace != NULL)
3902 t->to_disable_btrace (t, btinfo);
3912 target_teardown_btrace (struct btrace_target_info *btinfo)
3914 struct target_ops *t;
3916 for (t = current_target.beneath; t != NULL; t = t->beneath)
3917 if (t->to_teardown_btrace != NULL)
3919 t->to_teardown_btrace (t, btinfo);
3929 target_read_btrace (VEC (btrace_block_s) **btrace,
3930 struct btrace_target_info *btinfo,
3931 enum btrace_read_type type)
3933 struct target_ops *t;
3935 for (t = current_target.beneath; t != NULL; t = t->beneath)
3936 if (t->to_read_btrace != NULL)
3937 return t->to_read_btrace (t, btrace, btinfo, type);
3940 return BTRACE_ERR_NOT_SUPPORTED;
3946 target_stop_recording (void)
3948 struct target_ops *t;
3950 for (t = current_target.beneath; t != NULL; t = t->beneath)
3951 if (t->to_stop_recording != NULL)
3953 t->to_stop_recording (t);
3957 /* This is optional. */
3963 target_info_record (void)
3965 struct target_ops *t;
3967 for (t = current_target.beneath; t != NULL; t = t->beneath)
3968 if (t->to_info_record != NULL)
3970 t->to_info_record (t);
3980 target_save_record (const char *filename)
3982 struct target_ops *t;
3984 for (t = current_target.beneath; t != NULL; t = t->beneath)
3985 if (t->to_save_record != NULL)
3987 t->to_save_record (t, filename);
3997 target_supports_delete_record (void)
3999 struct target_ops *t;
4001 for (t = current_target.beneath; t != NULL; t = t->beneath)
4002 if (t->to_delete_record != NULL)
4011 target_delete_record (void)
4013 struct target_ops *t;
4015 for (t = current_target.beneath; t != NULL; t = t->beneath)
4016 if (t->to_delete_record != NULL)
4018 t->to_delete_record (t);
4028 target_record_is_replaying (void)
4030 struct target_ops *t;
4032 for (t = current_target.beneath; t != NULL; t = t->beneath)
4033 if (t->to_record_is_replaying != NULL)
4034 return t->to_record_is_replaying (t);
4042 target_goto_record_begin (void)
4044 struct target_ops *t;
4046 for (t = current_target.beneath; t != NULL; t = t->beneath)
4047 if (t->to_goto_record_begin != NULL)
4049 t->to_goto_record_begin (t);
4059 target_goto_record_end (void)
4061 struct target_ops *t;
4063 for (t = current_target.beneath; t != NULL; t = t->beneath)
4064 if (t->to_goto_record_end != NULL)
4066 t->to_goto_record_end (t);
4076 target_goto_record (ULONGEST insn)
4078 struct target_ops *t;
4080 for (t = current_target.beneath; t != NULL; t = t->beneath)
4081 if (t->to_goto_record != NULL)
4083 t->to_goto_record (t, insn);
4093 target_insn_history (int size, int flags)
4095 struct target_ops *t;
4097 for (t = current_target.beneath; t != NULL; t = t->beneath)
4098 if (t->to_insn_history != NULL)
4100 t->to_insn_history (t, size, flags);
4110 target_insn_history_from (ULONGEST from, int size, int flags)
4112 struct target_ops *t;
4114 for (t = current_target.beneath; t != NULL; t = t->beneath)
4115 if (t->to_insn_history_from != NULL)
4117 t->to_insn_history_from (t, from, size, flags);
4127 target_insn_history_range (ULONGEST begin, ULONGEST end, int flags)
4129 struct target_ops *t;
4131 for (t = current_target.beneath; t != NULL; t = t->beneath)
4132 if (t->to_insn_history_range != NULL)
4134 t->to_insn_history_range (t, begin, end, flags);
4144 target_call_history (int size, int flags)
4146 struct target_ops *t;
4148 for (t = current_target.beneath; t != NULL; t = t->beneath)
4149 if (t->to_call_history != NULL)
4151 t->to_call_history (t, size, flags);
4161 target_call_history_from (ULONGEST begin, int size, int flags)
4163 struct target_ops *t;
4165 for (t = current_target.beneath; t != NULL; t = t->beneath)
4166 if (t->to_call_history_from != NULL)
4168 t->to_call_history_from (t, begin, size, flags);
4178 target_call_history_range (ULONGEST begin, ULONGEST end, int flags)
4180 struct target_ops *t;
4182 for (t = current_target.beneath; t != NULL; t = t->beneath)
4183 if (t->to_call_history_range != NULL)
4185 t->to_call_history_range (t, begin, end, flags);
4193 debug_to_prepare_to_store (struct target_ops *self, struct regcache *regcache)
4195 debug_target.to_prepare_to_store (&debug_target, regcache);
4197 fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n");
4202 const struct frame_unwind *
4203 target_get_unwinder (void)
4205 struct target_ops *t;
4207 for (t = current_target.beneath; t != NULL; t = t->beneath)
4208 if (t->to_get_unwinder != NULL)
4209 return t->to_get_unwinder;
4216 const struct frame_unwind *
4217 target_get_tailcall_unwinder (void)
4219 struct target_ops *t;
4221 for (t = current_target.beneath; t != NULL; t = t->beneath)
4222 if (t->to_get_tailcall_unwinder != NULL)
4223 return t->to_get_tailcall_unwinder;
4231 forward_target_decr_pc_after_break (struct target_ops *ops,
4232 struct gdbarch *gdbarch)
4234 for (; ops != NULL; ops = ops->beneath)
4235 if (ops->to_decr_pc_after_break != NULL)
4236 return ops->to_decr_pc_after_break (ops, gdbarch);
4238 return gdbarch_decr_pc_after_break (gdbarch);
4244 target_decr_pc_after_break (struct gdbarch *gdbarch)
4246 return forward_target_decr_pc_after_break (current_target.beneath, gdbarch);
4250 deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len,
4251 int write, struct mem_attrib *attrib,
4252 struct target_ops *target)
4256 retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write,
4259 fprintf_unfiltered (gdb_stdlog,
4260 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4261 paddress (target_gdbarch (), memaddr), len,
4262 write ? "write" : "read", retval);
4268 fputs_unfiltered (", bytes =", gdb_stdlog);
4269 for (i = 0; i < retval; i++)
4271 if ((((intptr_t) &(myaddr[i])) & 0xf) == 0)
4273 if (targetdebug < 2 && i > 0)
4275 fprintf_unfiltered (gdb_stdlog, " ...");
4278 fprintf_unfiltered (gdb_stdlog, "\n");
4281 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
4285 fputc_unfiltered ('\n', gdb_stdlog);
4291 debug_to_files_info (struct target_ops *target)
4293 debug_target.to_files_info (target);
4295 fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n");
4299 debug_to_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch,
4300 struct bp_target_info *bp_tgt)
4304 retval = debug_target.to_insert_breakpoint (&debug_target, gdbarch, bp_tgt);
4306 fprintf_unfiltered (gdb_stdlog,
4307 "target_insert_breakpoint (%s, xxx) = %ld\n",
4308 core_addr_to_string (bp_tgt->placed_address),
4309 (unsigned long) retval);
4314 debug_to_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch,
4315 struct bp_target_info *bp_tgt)
4319 retval = debug_target.to_remove_breakpoint (&debug_target, gdbarch, bp_tgt);
4321 fprintf_unfiltered (gdb_stdlog,
4322 "target_remove_breakpoint (%s, xxx) = %ld\n",
4323 core_addr_to_string (bp_tgt->placed_address),
4324 (unsigned long) retval);
4329 debug_to_can_use_hw_breakpoint (struct target_ops *self,
4330 int type, int cnt, int from_tty)
4334 retval = debug_target.to_can_use_hw_breakpoint (&debug_target,
4335 type, cnt, from_tty);
4337 fprintf_unfiltered (gdb_stdlog,
4338 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4339 (unsigned long) type,
4340 (unsigned long) cnt,
4341 (unsigned long) from_tty,
4342 (unsigned long) retval);
4347 debug_to_region_ok_for_hw_watchpoint (struct target_ops *self,
4348 CORE_ADDR addr, int len)
4352 retval = debug_target.to_region_ok_for_hw_watchpoint (&debug_target,
4355 fprintf_unfiltered (gdb_stdlog,
4356 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4357 core_addr_to_string (addr), (unsigned long) len,
4358 core_addr_to_string (retval));
4363 debug_to_can_accel_watchpoint_condition (struct target_ops *self,
4364 CORE_ADDR addr, int len, int rw,
4365 struct expression *cond)
4369 retval = debug_target.to_can_accel_watchpoint_condition (&debug_target,
4373 fprintf_unfiltered (gdb_stdlog,
4374 "target_can_accel_watchpoint_condition "
4375 "(%s, %d, %d, %s) = %ld\n",
4376 core_addr_to_string (addr), len, rw,
4377 host_address_to_string (cond), (unsigned long) retval);
4382 debug_to_stopped_by_watchpoint (struct target_ops *ops)
4386 retval = debug_target.to_stopped_by_watchpoint (&debug_target);
4388 fprintf_unfiltered (gdb_stdlog,
4389 "target_stopped_by_watchpoint () = %ld\n",
4390 (unsigned long) retval);
4395 debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr)
4399 retval = debug_target.to_stopped_data_address (target, addr);
4401 fprintf_unfiltered (gdb_stdlog,
4402 "target_stopped_data_address ([%s]) = %ld\n",
4403 core_addr_to_string (*addr),
4404 (unsigned long)retval);
4409 debug_to_watchpoint_addr_within_range (struct target_ops *target,
4411 CORE_ADDR start, int length)
4415 retval = debug_target.to_watchpoint_addr_within_range (target, addr,
4418 fprintf_filtered (gdb_stdlog,
4419 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4420 core_addr_to_string (addr), core_addr_to_string (start),
4426 debug_to_insert_hw_breakpoint (struct target_ops *self,
4427 struct gdbarch *gdbarch,
4428 struct bp_target_info *bp_tgt)
4432 retval = debug_target.to_insert_hw_breakpoint (&debug_target,
4435 fprintf_unfiltered (gdb_stdlog,
4436 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4437 core_addr_to_string (bp_tgt->placed_address),
4438 (unsigned long) retval);
4443 debug_to_remove_hw_breakpoint (struct target_ops *self,
4444 struct gdbarch *gdbarch,
4445 struct bp_target_info *bp_tgt)
4449 retval = debug_target.to_remove_hw_breakpoint (&debug_target,
4452 fprintf_unfiltered (gdb_stdlog,
4453 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4454 core_addr_to_string (bp_tgt->placed_address),
4455 (unsigned long) retval);
4460 debug_to_insert_watchpoint (struct target_ops *self,
4461 CORE_ADDR addr, int len, int type,
4462 struct expression *cond)
4466 retval = debug_target.to_insert_watchpoint (&debug_target,
4467 addr, len, type, cond);
4469 fprintf_unfiltered (gdb_stdlog,
4470 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4471 core_addr_to_string (addr), len, type,
4472 host_address_to_string (cond), (unsigned long) retval);
4477 debug_to_remove_watchpoint (struct target_ops *self,
4478 CORE_ADDR addr, int len, int type,
4479 struct expression *cond)
4483 retval = debug_target.to_remove_watchpoint (&debug_target,
4484 addr, len, type, cond);
4486 fprintf_unfiltered (gdb_stdlog,
4487 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4488 core_addr_to_string (addr), len, type,
4489 host_address_to_string (cond), (unsigned long) retval);
4494 debug_to_terminal_init (struct target_ops *self)
4496 debug_target.to_terminal_init (&debug_target);
4498 fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n");
4502 debug_to_terminal_inferior (struct target_ops *self)
4504 debug_target.to_terminal_inferior (&debug_target);
4506 fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n");
4510 debug_to_terminal_ours_for_output (struct target_ops *self)
4512 debug_target.to_terminal_ours_for_output (&debug_target);
4514 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n");
4518 debug_to_terminal_ours (struct target_ops *self)
4520 debug_target.to_terminal_ours (&debug_target);
4522 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n");
4526 debug_to_terminal_save_ours (struct target_ops *self)
4528 debug_target.to_terminal_save_ours (&debug_target);
4530 fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n");
4534 debug_to_terminal_info (struct target_ops *self,
4535 const char *arg, int from_tty)
4537 debug_target.to_terminal_info (&debug_target, arg, from_tty);
4539 fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg,
4544 debug_to_load (struct target_ops *self, char *args, int from_tty)
4546 debug_target.to_load (&debug_target, args, from_tty);
4548 fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty);
4552 debug_to_post_startup_inferior (struct target_ops *self, ptid_t ptid)
4554 debug_target.to_post_startup_inferior (&debug_target, ptid);
4556 fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n",
4557 ptid_get_pid (ptid));
4561 debug_to_insert_fork_catchpoint (struct target_ops *self, int pid)
4565 retval = debug_target.to_insert_fork_catchpoint (&debug_target, pid);
4567 fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n",
4574 debug_to_remove_fork_catchpoint (struct target_ops *self, int pid)
4578 retval = debug_target.to_remove_fork_catchpoint (&debug_target, pid);
4580 fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n",
4587 debug_to_insert_vfork_catchpoint (struct target_ops *self, int pid)
4591 retval = debug_target.to_insert_vfork_catchpoint (&debug_target, pid);
4593 fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n",
4600 debug_to_remove_vfork_catchpoint (struct target_ops *self, int pid)
4604 retval = debug_target.to_remove_vfork_catchpoint (&debug_target, pid);
4606 fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n",
4613 debug_to_insert_exec_catchpoint (struct target_ops *self, int pid)
4617 retval = debug_target.to_insert_exec_catchpoint (&debug_target, pid);
4619 fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n",
4626 debug_to_remove_exec_catchpoint (struct target_ops *self, int pid)
4630 retval = debug_target.to_remove_exec_catchpoint (&debug_target, pid);
4632 fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n",
4639 debug_to_has_exited (struct target_ops *self,
4640 int pid, int wait_status, int *exit_status)
4644 has_exited = debug_target.to_has_exited (&debug_target,
4645 pid, wait_status, exit_status);
4647 fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n",
4648 pid, wait_status, *exit_status, has_exited);
4654 debug_to_can_run (struct target_ops *self)
4658 retval = debug_target.to_can_run (&debug_target);
4660 fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval);
4665 static struct gdbarch *
4666 debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid)
4668 struct gdbarch *retval;
4670 retval = debug_target.to_thread_architecture (ops, ptid);
4672 fprintf_unfiltered (gdb_stdlog,
4673 "target_thread_architecture (%s) = %s [%s]\n",
4674 target_pid_to_str (ptid),
4675 host_address_to_string (retval),
4676 gdbarch_bfd_arch_info (retval)->printable_name);
4681 debug_to_stop (struct target_ops *self, ptid_t ptid)
4683 debug_target.to_stop (&debug_target, ptid);
4685 fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n",
4686 target_pid_to_str (ptid));
4690 debug_to_rcmd (struct target_ops *self, char *command,
4691 struct ui_file *outbuf)
4693 debug_target.to_rcmd (&debug_target, command, outbuf);
4694 fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command);
4698 debug_to_pid_to_exec_file (struct target_ops *self, int pid)
4702 exec_file = debug_target.to_pid_to_exec_file (&debug_target, pid);
4704 fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n",
4711 setup_target_debug (void)
4713 memcpy (&debug_target, ¤t_target, sizeof debug_target);
4715 current_target.to_open = debug_to_open;
4716 current_target.to_post_attach = debug_to_post_attach;
4717 current_target.to_prepare_to_store = debug_to_prepare_to_store;
4718 current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory;
4719 current_target.to_files_info = debug_to_files_info;
4720 current_target.to_insert_breakpoint = debug_to_insert_breakpoint;
4721 current_target.to_remove_breakpoint = debug_to_remove_breakpoint;
4722 current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint;
4723 current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint;
4724 current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint;
4725 current_target.to_insert_watchpoint = debug_to_insert_watchpoint;
4726 current_target.to_remove_watchpoint = debug_to_remove_watchpoint;
4727 current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint;
4728 current_target.to_stopped_data_address = debug_to_stopped_data_address;
4729 current_target.to_watchpoint_addr_within_range
4730 = debug_to_watchpoint_addr_within_range;
4731 current_target.to_region_ok_for_hw_watchpoint
4732 = debug_to_region_ok_for_hw_watchpoint;
4733 current_target.to_can_accel_watchpoint_condition
4734 = debug_to_can_accel_watchpoint_condition;
4735 current_target.to_terminal_init = debug_to_terminal_init;
4736 current_target.to_terminal_inferior = debug_to_terminal_inferior;
4737 current_target.to_terminal_ours_for_output
4738 = debug_to_terminal_ours_for_output;
4739 current_target.to_terminal_ours = debug_to_terminal_ours;
4740 current_target.to_terminal_save_ours = debug_to_terminal_save_ours;
4741 current_target.to_terminal_info = debug_to_terminal_info;
4742 current_target.to_load = debug_to_load;
4743 current_target.to_post_startup_inferior = debug_to_post_startup_inferior;
4744 current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint;
4745 current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint;
4746 current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint;
4747 current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint;
4748 current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint;
4749 current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint;
4750 current_target.to_has_exited = debug_to_has_exited;
4751 current_target.to_can_run = debug_to_can_run;
4752 current_target.to_stop = debug_to_stop;
4753 current_target.to_rcmd = debug_to_rcmd;
4754 current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file;
4755 current_target.to_thread_architecture = debug_to_thread_architecture;
4759 static char targ_desc[] =
4760 "Names of targets and files being debugged.\nShows the entire \
4761 stack of targets currently in use (including the exec-file,\n\
4762 core-file, and process, if any), as well as the symbol file name.";
4765 default_rcmd (struct target_ops *self, char *command, struct ui_file *output)
4767 error (_("\"monitor\" command not supported by this target."));
4771 do_monitor_command (char *cmd,
4774 target_rcmd (cmd, gdb_stdtarg);
4777 /* Print the name of each layers of our target stack. */
4780 maintenance_print_target_stack (char *cmd, int from_tty)
4782 struct target_ops *t;
4784 printf_filtered (_("The current target stack is:\n"));
4786 for (t = target_stack; t != NULL; t = t->beneath)
4788 printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname);
4792 /* Controls if async mode is permitted. */
4793 int target_async_permitted = 0;
4795 /* The set command writes to this variable. If the inferior is
4796 executing, target_async_permitted is *not* updated. */
4797 static int target_async_permitted_1 = 0;
4800 set_target_async_command (char *args, int from_tty,
4801 struct cmd_list_element *c)
4803 if (have_live_inferiors ())
4805 target_async_permitted_1 = target_async_permitted;
4806 error (_("Cannot change this setting while the inferior is running."));
4809 target_async_permitted = target_async_permitted_1;
4813 show_target_async_command (struct ui_file *file, int from_tty,
4814 struct cmd_list_element *c,
4817 fprintf_filtered (file,
4818 _("Controlling the inferior in "
4819 "asynchronous mode is %s.\n"), value);
4822 /* Temporary copies of permission settings. */
4824 static int may_write_registers_1 = 1;
4825 static int may_write_memory_1 = 1;
4826 static int may_insert_breakpoints_1 = 1;
4827 static int may_insert_tracepoints_1 = 1;
4828 static int may_insert_fast_tracepoints_1 = 1;
4829 static int may_stop_1 = 1;
4831 /* Make the user-set values match the real values again. */
4834 update_target_permissions (void)
4836 may_write_registers_1 = may_write_registers;
4837 may_write_memory_1 = may_write_memory;
4838 may_insert_breakpoints_1 = may_insert_breakpoints;
4839 may_insert_tracepoints_1 = may_insert_tracepoints;
4840 may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints;
4841 may_stop_1 = may_stop;
4844 /* The one function handles (most of) the permission flags in the same
4848 set_target_permissions (char *args, int from_tty,
4849 struct cmd_list_element *c)
4851 if (target_has_execution)
4853 update_target_permissions ();
4854 error (_("Cannot change this setting while the inferior is running."));
4857 /* Make the real values match the user-changed values. */
4858 may_write_registers = may_write_registers_1;
4859 may_insert_breakpoints = may_insert_breakpoints_1;
4860 may_insert_tracepoints = may_insert_tracepoints_1;
4861 may_insert_fast_tracepoints = may_insert_fast_tracepoints_1;
4862 may_stop = may_stop_1;
4863 update_observer_mode ();
4866 /* Set memory write permission independently of observer mode. */
4869 set_write_memory_permission (char *args, int from_tty,
4870 struct cmd_list_element *c)
4872 /* Make the real values match the user-changed values. */
4873 may_write_memory = may_write_memory_1;
4874 update_observer_mode ();
4879 initialize_targets (void)
4881 init_dummy_target ();
4882 push_target (&dummy_target);
4884 add_info ("target", target_info, targ_desc);
4885 add_info ("files", target_info, targ_desc);
4887 add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\
4888 Set target debugging."), _("\
4889 Show target debugging."), _("\
4890 When non-zero, target debugging is enabled. Higher numbers are more\n\
4891 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4895 &setdebuglist, &showdebuglist);
4897 add_setshow_boolean_cmd ("trust-readonly-sections", class_support,
4898 &trust_readonly, _("\
4899 Set mode for reading from readonly sections."), _("\
4900 Show mode for reading from readonly sections."), _("\
4901 When this mode is on, memory reads from readonly sections (such as .text)\n\
4902 will be read from the object file instead of from the target. This will\n\
4903 result in significant performance improvement for remote targets."),
4905 show_trust_readonly,
4906 &setlist, &showlist);
4908 add_com ("monitor", class_obscure, do_monitor_command,
4909 _("Send a command to the remote monitor (remote targets only)."));
4911 add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack,
4912 _("Print the name of each layer of the internal target stack."),
4913 &maintenanceprintlist);
4915 add_setshow_boolean_cmd ("target-async", no_class,
4916 &target_async_permitted_1, _("\
4917 Set whether gdb controls the inferior in asynchronous mode."), _("\
4918 Show whether gdb controls the inferior in asynchronous mode."), _("\
4919 Tells gdb whether to control the inferior in asynchronous mode."),
4920 set_target_async_command,
4921 show_target_async_command,
4925 add_setshow_boolean_cmd ("may-write-registers", class_support,
4926 &may_write_registers_1, _("\
4927 Set permission to write into registers."), _("\
4928 Show permission to write into registers."), _("\
4929 When this permission is on, GDB may write into the target's registers.\n\
4930 Otherwise, any sort of write attempt will result in an error."),
4931 set_target_permissions, NULL,
4932 &setlist, &showlist);
4934 add_setshow_boolean_cmd ("may-write-memory", class_support,
4935 &may_write_memory_1, _("\
4936 Set permission to write into target memory."), _("\
4937 Show permission to write into target memory."), _("\
4938 When this permission is on, GDB may write into the target's memory.\n\
4939 Otherwise, any sort of write attempt will result in an error."),
4940 set_write_memory_permission, NULL,
4941 &setlist, &showlist);
4943 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support,
4944 &may_insert_breakpoints_1, _("\
4945 Set permission to insert breakpoints in the target."), _("\
4946 Show permission to insert breakpoints in the target."), _("\
4947 When this permission is on, GDB may insert breakpoints in the program.\n\
4948 Otherwise, any sort of insertion attempt will result in an error."),
4949 set_target_permissions, NULL,
4950 &setlist, &showlist);
4952 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support,
4953 &may_insert_tracepoints_1, _("\
4954 Set permission to insert tracepoints in the target."), _("\
4955 Show permission to insert tracepoints in the target."), _("\
4956 When this permission is on, GDB may insert tracepoints in the program.\n\
4957 Otherwise, any sort of insertion attempt will result in an error."),
4958 set_target_permissions, NULL,
4959 &setlist, &showlist);
4961 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support,
4962 &may_insert_fast_tracepoints_1, _("\
4963 Set permission to insert fast tracepoints in the target."), _("\
4964 Show permission to insert fast tracepoints in the target."), _("\
4965 When this permission is on, GDB may insert fast tracepoints.\n\
4966 Otherwise, any sort of insertion attempt will result in an error."),
4967 set_target_permissions, NULL,
4968 &setlist, &showlist);
4970 add_setshow_boolean_cmd ("may-interrupt", class_support,
4972 Set permission to interrupt or signal the target."), _("\
4973 Show permission to interrupt or signal the target."), _("\
4974 When this permission is on, GDB may interrupt/stop the target's execution.\n\
4975 Otherwise, any attempt to interrupt or stop will be ignored."),
4976 set_target_permissions, NULL,
4977 &setlist, &showlist);