1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2014 Free Software Foundation, Inc.
5 Contributed by Cygnus Support.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "target-dcache.h"
36 #include "gdb_assert.h"
38 #include "exceptions.h"
39 #include "target-descriptions.h"
40 #include "gdbthread.h"
43 #include "inline-frame.h"
44 #include "tracepoint.h"
45 #include "gdb/fileio.h"
49 static void target_info (char *, int);
51 static void default_terminal_info (struct target_ops *, const char *, int);
53 static int default_watchpoint_addr_within_range (struct target_ops *,
54 CORE_ADDR, CORE_ADDR, int);
56 static int default_region_ok_for_hw_watchpoint (struct target_ops *,
59 static void default_rcmd (struct target_ops *, char *, struct ui_file *);
61 static ptid_t default_get_ada_task_ptid (struct target_ops *self,
64 static int default_follow_fork (struct target_ops *self, int follow_child,
67 static void default_mourn_inferior (struct target_ops *self);
69 static int default_search_memory (struct target_ops *ops,
71 ULONGEST search_space_len,
72 const gdb_byte *pattern,
74 CORE_ADDR *found_addrp);
76 static void tcomplain (void) ATTRIBUTE_NORETURN;
78 static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *);
80 static int return_zero (void);
82 void target_ignore (void);
84 static void target_command (char *, int);
86 static struct target_ops *find_default_run_target (char *);
88 static target_xfer_partial_ftype default_xfer_partial;
90 static struct gdbarch *default_thread_architecture (struct target_ops *ops,
93 static int dummy_find_memory_regions (struct target_ops *self,
94 find_memory_region_ftype ignore1,
97 static char *dummy_make_corefile_notes (struct target_ops *self,
98 bfd *ignore1, int *ignore2);
100 static char *default_pid_to_str (struct target_ops *ops, ptid_t ptid);
102 static int find_default_can_async_p (struct target_ops *ignore);
104 static int find_default_is_async_p (struct target_ops *ignore);
106 static enum exec_direction_kind default_execution_direction
107 (struct target_ops *self);
109 #include "target-delegates.c"
111 static void init_dummy_target (void);
113 static struct target_ops debug_target;
115 static void debug_to_open (char *, int);
117 static void debug_to_prepare_to_store (struct target_ops *self,
120 static void debug_to_files_info (struct target_ops *);
122 static int debug_to_insert_breakpoint (struct target_ops *, struct gdbarch *,
123 struct bp_target_info *);
125 static int debug_to_remove_breakpoint (struct target_ops *, struct gdbarch *,
126 struct bp_target_info *);
128 static int debug_to_can_use_hw_breakpoint (struct target_ops *self,
131 static int debug_to_insert_hw_breakpoint (struct target_ops *self,
133 struct bp_target_info *);
135 static int debug_to_remove_hw_breakpoint (struct target_ops *self,
137 struct bp_target_info *);
139 static int debug_to_insert_watchpoint (struct target_ops *self,
141 struct expression *);
143 static int debug_to_remove_watchpoint (struct target_ops *self,
145 struct expression *);
147 static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *);
149 static int debug_to_watchpoint_addr_within_range (struct target_ops *,
150 CORE_ADDR, CORE_ADDR, int);
152 static int debug_to_region_ok_for_hw_watchpoint (struct target_ops *self,
155 static int debug_to_can_accel_watchpoint_condition (struct target_ops *self,
157 struct expression *);
159 static void debug_to_terminal_init (struct target_ops *self);
161 static void debug_to_terminal_inferior (struct target_ops *self);
163 static void debug_to_terminal_ours_for_output (struct target_ops *self);
165 static void debug_to_terminal_save_ours (struct target_ops *self);
167 static void debug_to_terminal_ours (struct target_ops *self);
169 static void debug_to_load (struct target_ops *self, char *, int);
171 static int debug_to_can_run (struct target_ops *self);
173 static void debug_to_stop (struct target_ops *self, ptid_t);
175 /* Pointer to array of target architecture structures; the size of the
176 array; the current index into the array; the allocated size of the
178 struct target_ops **target_structs;
179 unsigned target_struct_size;
180 unsigned target_struct_allocsize;
181 #define DEFAULT_ALLOCSIZE 10
183 /* The initial current target, so that there is always a semi-valid
186 static struct target_ops dummy_target;
188 /* Top of target stack. */
190 static struct target_ops *target_stack;
192 /* The target structure we are currently using to talk to a process
193 or file or whatever "inferior" we have. */
195 struct target_ops current_target;
197 /* Command list for target. */
199 static struct cmd_list_element *targetlist = NULL;
201 /* Nonzero if we should trust readonly sections from the
202 executable when reading memory. */
204 static int trust_readonly = 0;
206 /* Nonzero if we should show true memory content including
207 memory breakpoint inserted by gdb. */
209 static int show_memory_breakpoints = 0;
211 /* These globals control whether GDB attempts to perform these
212 operations; they are useful for targets that need to prevent
213 inadvertant disruption, such as in non-stop mode. */
215 int may_write_registers = 1;
217 int may_write_memory = 1;
219 int may_insert_breakpoints = 1;
221 int may_insert_tracepoints = 1;
223 int may_insert_fast_tracepoints = 1;
227 /* Non-zero if we want to see trace of target level stuff. */
229 static unsigned int targetdebug = 0;
231 show_targetdebug (struct ui_file *file, int from_tty,
232 struct cmd_list_element *c, const char *value)
234 fprintf_filtered (file, _("Target debugging is %s.\n"), value);
237 static void setup_target_debug (void);
239 /* The user just typed 'target' without the name of a target. */
242 target_command (char *arg, int from_tty)
244 fputs_filtered ("Argument required (target name). Try `help target'\n",
248 /* Default target_has_* methods for process_stratum targets. */
251 default_child_has_all_memory (struct target_ops *ops)
253 /* If no inferior selected, then we can't read memory here. */
254 if (ptid_equal (inferior_ptid, null_ptid))
261 default_child_has_memory (struct target_ops *ops)
263 /* If no inferior selected, then we can't read memory here. */
264 if (ptid_equal (inferior_ptid, null_ptid))
271 default_child_has_stack (struct target_ops *ops)
273 /* If no inferior selected, there's no stack. */
274 if (ptid_equal (inferior_ptid, null_ptid))
281 default_child_has_registers (struct target_ops *ops)
283 /* Can't read registers from no inferior. */
284 if (ptid_equal (inferior_ptid, null_ptid))
291 default_child_has_execution (struct target_ops *ops, ptid_t the_ptid)
293 /* If there's no thread selected, then we can't make it run through
295 if (ptid_equal (the_ptid, null_ptid))
303 target_has_all_memory_1 (void)
305 struct target_ops *t;
307 for (t = current_target.beneath; t != NULL; t = t->beneath)
308 if (t->to_has_all_memory (t))
315 target_has_memory_1 (void)
317 struct target_ops *t;
319 for (t = current_target.beneath; t != NULL; t = t->beneath)
320 if (t->to_has_memory (t))
327 target_has_stack_1 (void)
329 struct target_ops *t;
331 for (t = current_target.beneath; t != NULL; t = t->beneath)
332 if (t->to_has_stack (t))
339 target_has_registers_1 (void)
341 struct target_ops *t;
343 for (t = current_target.beneath; t != NULL; t = t->beneath)
344 if (t->to_has_registers (t))
351 target_has_execution_1 (ptid_t the_ptid)
353 struct target_ops *t;
355 for (t = current_target.beneath; t != NULL; t = t->beneath)
356 if (t->to_has_execution (t, the_ptid))
363 target_has_execution_current (void)
365 return target_has_execution_1 (inferior_ptid);
368 /* Complete initialization of T. This ensures that various fields in
369 T are set, if needed by the target implementation. */
372 complete_target_initialization (struct target_ops *t)
374 /* Provide default values for all "must have" methods. */
375 if (t->to_xfer_partial == NULL)
376 t->to_xfer_partial = default_xfer_partial;
378 if (t->to_has_all_memory == NULL)
379 t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero;
381 if (t->to_has_memory == NULL)
382 t->to_has_memory = (int (*) (struct target_ops *)) return_zero;
384 if (t->to_has_stack == NULL)
385 t->to_has_stack = (int (*) (struct target_ops *)) return_zero;
387 if (t->to_has_registers == NULL)
388 t->to_has_registers = (int (*) (struct target_ops *)) return_zero;
390 if (t->to_has_execution == NULL)
391 t->to_has_execution = (int (*) (struct target_ops *, ptid_t)) return_zero;
393 install_delegators (t);
396 /* Add possible target architecture T to the list and add a new
397 command 'target T->to_shortname'. Set COMPLETER as the command's
398 completer if not NULL. */
401 add_target_with_completer (struct target_ops *t,
402 completer_ftype *completer)
404 struct cmd_list_element *c;
406 complete_target_initialization (t);
410 target_struct_allocsize = DEFAULT_ALLOCSIZE;
411 target_structs = (struct target_ops **) xmalloc
412 (target_struct_allocsize * sizeof (*target_structs));
414 if (target_struct_size >= target_struct_allocsize)
416 target_struct_allocsize *= 2;
417 target_structs = (struct target_ops **)
418 xrealloc ((char *) target_structs,
419 target_struct_allocsize * sizeof (*target_structs));
421 target_structs[target_struct_size++] = t;
423 if (targetlist == NULL)
424 add_prefix_cmd ("target", class_run, target_command, _("\
425 Connect to a target machine or process.\n\
426 The first argument is the type or protocol of the target machine.\n\
427 Remaining arguments are interpreted by the target protocol. For more\n\
428 information on the arguments for a particular protocol, type\n\
429 `help target ' followed by the protocol name."),
430 &targetlist, "target ", 0, &cmdlist);
431 c = add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc,
433 if (completer != NULL)
434 set_cmd_completer (c, completer);
437 /* Add a possible target architecture to the list. */
440 add_target (struct target_ops *t)
442 add_target_with_completer (t, NULL);
448 add_deprecated_target_alias (struct target_ops *t, char *alias)
450 struct cmd_list_element *c;
453 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
455 c = add_cmd (alias, no_class, t->to_open, t->to_doc, &targetlist);
456 alt = xstrprintf ("target %s", t->to_shortname);
457 deprecate_cmd (c, alt);
471 fprintf_unfiltered (gdb_stdlog, "target_kill ()\n");
473 current_target.to_kill (¤t_target);
477 target_load (char *arg, int from_tty)
479 target_dcache_invalidate ();
480 (*current_target.to_load) (¤t_target, arg, from_tty);
484 target_create_inferior (char *exec_file, char *args,
485 char **env, int from_tty)
487 struct target_ops *t;
489 for (t = current_target.beneath; t != NULL; t = t->beneath)
491 if (t->to_create_inferior != NULL)
493 t->to_create_inferior (t, exec_file, args, env, from_tty);
495 fprintf_unfiltered (gdb_stdlog,
496 "target_create_inferior (%s, %s, xxx, %d)\n",
497 exec_file, args, from_tty);
502 internal_error (__FILE__, __LINE__,
503 _("could not find a target to create inferior"));
507 target_terminal_inferior (void)
509 /* A background resume (``run&'') should leave GDB in control of the
510 terminal. Use target_can_async_p, not target_is_async_p, since at
511 this point the target is not async yet. However, if sync_execution
512 is not set, we know it will become async prior to resume. */
513 if (target_can_async_p () && !sync_execution)
516 /* If GDB is resuming the inferior in the foreground, install
517 inferior's terminal modes. */
518 (*current_target.to_terminal_inferior) (¤t_target);
522 nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write,
523 struct target_ops *t)
525 errno = EIO; /* Can't read/write this location. */
526 return 0; /* No bytes handled. */
532 error (_("You can't do that when your target is `%s'"),
533 current_target.to_shortname);
539 error (_("You can't do that without a process to debug."));
543 default_terminal_info (struct target_ops *self, const char *args, int from_tty)
545 printf_unfiltered (_("No saved terminal information.\n"));
548 /* A default implementation for the to_get_ada_task_ptid target method.
550 This function builds the PTID by using both LWP and TID as part of
551 the PTID lwp and tid elements. The pid used is the pid of the
555 default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid)
557 return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid);
560 static enum exec_direction_kind
561 default_execution_direction (struct target_ops *self)
563 if (!target_can_execute_reverse)
565 else if (!target_can_async_p ())
568 gdb_assert_not_reached ("\
569 to_execution_direction must be implemented for reverse async");
572 /* Go through the target stack from top to bottom, copying over zero
573 entries in current_target, then filling in still empty entries. In
574 effect, we are doing class inheritance through the pushed target
577 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
578 is currently implemented, is that it discards any knowledge of
579 which target an inherited method originally belonged to.
580 Consequently, new new target methods should instead explicitly and
581 locally search the target stack for the target that can handle the
585 update_current_target (void)
587 struct target_ops *t;
589 /* First, reset current's contents. */
590 memset (¤t_target, 0, sizeof (current_target));
592 /* Install the delegators. */
593 install_delegators (¤t_target);
595 #define INHERIT(FIELD, TARGET) \
596 if (!current_target.FIELD) \
597 current_target.FIELD = (TARGET)->FIELD
599 for (t = target_stack; t; t = t->beneath)
601 INHERIT (to_shortname, t);
602 INHERIT (to_longname, t);
604 /* Do not inherit to_open. */
605 /* Do not inherit to_close. */
606 /* Do not inherit to_attach. */
607 /* Do not inherit to_post_attach. */
608 INHERIT (to_attach_no_wait, t);
609 /* Do not inherit to_detach. */
610 /* Do not inherit to_disconnect. */
611 /* Do not inherit to_resume. */
612 /* Do not inherit to_wait. */
613 /* Do not inherit to_fetch_registers. */
614 /* Do not inherit to_store_registers. */
615 /* Do not inherit to_prepare_to_store. */
616 INHERIT (deprecated_xfer_memory, t);
617 /* Do not inherit to_files_info. */
618 /* Do not inherit to_insert_breakpoint. */
619 /* Do not inherit to_remove_breakpoint. */
620 /* Do not inherit to_can_use_hw_breakpoint. */
621 /* Do not inherit to_insert_hw_breakpoint. */
622 /* Do not inherit to_remove_hw_breakpoint. */
623 /* Do not inherit to_ranged_break_num_registers. */
624 /* Do not inherit to_insert_watchpoint. */
625 /* Do not inherit to_remove_watchpoint. */
626 /* Do not inherit to_insert_mask_watchpoint. */
627 /* Do not inherit to_remove_mask_watchpoint. */
628 /* Do not inherit to_stopped_data_address. */
629 INHERIT (to_have_steppable_watchpoint, t);
630 INHERIT (to_have_continuable_watchpoint, t);
631 /* Do not inherit to_stopped_by_watchpoint. */
632 /* Do not inherit to_watchpoint_addr_within_range. */
633 /* Do not inherit to_region_ok_for_hw_watchpoint. */
634 /* Do not inherit to_can_accel_watchpoint_condition. */
635 /* Do not inherit to_masked_watch_num_registers. */
636 /* Do not inherit to_terminal_init. */
637 /* Do not inherit to_terminal_inferior. */
638 /* Do not inherit to_terminal_ours_for_output. */
639 /* Do not inherit to_terminal_ours. */
640 /* Do not inherit to_terminal_save_ours. */
641 /* Do not inherit to_terminal_info. */
642 /* Do not inherit to_kill. */
643 /* Do not inherit to_load. */
644 /* Do no inherit to_create_inferior. */
645 /* Do not inherit to_post_startup_inferior. */
646 /* Do not inherit to_insert_fork_catchpoint. */
647 /* Do not inherit to_remove_fork_catchpoint. */
648 /* Do not inherit to_insert_vfork_catchpoint. */
649 /* Do not inherit to_remove_vfork_catchpoint. */
650 /* Do not inherit to_follow_fork. */
651 /* Do not inherit to_insert_exec_catchpoint. */
652 /* Do not inherit to_remove_exec_catchpoint. */
653 /* Do not inherit to_set_syscall_catchpoint. */
654 /* Do not inherit to_has_exited. */
655 /* Do not inherit to_mourn_inferior. */
656 INHERIT (to_can_run, t);
657 /* Do not inherit to_pass_signals. */
658 /* Do not inherit to_program_signals. */
659 /* Do not inherit to_thread_alive. */
660 /* Do not inherit to_find_new_threads. */
661 /* Do not inherit to_pid_to_str. */
662 /* Do not inherit to_extra_thread_info. */
663 /* Do not inherit to_thread_name. */
664 /* Do not inherit to_stop. */
665 /* Do not inherit to_xfer_partial. */
666 /* Do not inherit to_rcmd. */
667 /* Do not inherit to_pid_to_exec_file. */
668 /* Do not inherit to_log_command. */
669 INHERIT (to_stratum, t);
670 /* Do not inherit to_has_all_memory. */
671 /* Do not inherit to_has_memory. */
672 /* Do not inherit to_has_stack. */
673 /* Do not inherit to_has_registers. */
674 /* Do not inherit to_has_execution. */
675 INHERIT (to_has_thread_control, t);
676 /* Do not inherit to_can_async_p. */
677 /* Do not inherit to_is_async_p. */
678 /* Do not inherit to_async. */
679 /* Do not inherit to_find_memory_regions. */
680 /* Do not inherit to_make_corefile_notes. */
681 /* Do not inherit to_get_bookmark. */
682 /* Do not inherit to_goto_bookmark. */
683 /* Do not inherit to_get_thread_local_address. */
684 /* Do not inherit to_can_execute_reverse. */
685 /* Do not inherit to_execution_direction. */
686 /* Do not inherit to_thread_architecture. */
687 /* Do not inherit to_read_description. */
688 /* Do not inherit to_get_ada_task_ptid. */
689 /* Do not inherit to_search_memory. */
690 /* Do not inherit to_supports_multi_process. */
691 /* Do not inherit to_supports_enable_disable_tracepoint. */
692 /* Do not inherit to_supports_string_tracing. */
693 /* Do not inherit to_trace_init. */
694 /* Do not inherit to_download_tracepoint. */
695 /* Do not inherit to_can_download_tracepoint. */
696 /* Do not inherit to_download_trace_state_variable. */
697 /* Do not inherit to_enable_tracepoint. */
698 /* Do not inherit to_disable_tracepoint. */
699 /* Do not inherit to_trace_set_readonly_regions. */
700 /* Do not inherit to_trace_start. */
701 /* Do not inherit to_get_trace_status. */
702 /* Do not inherit to_get_tracepoint_status. */
703 /* Do not inherit to_trace_stop. */
704 /* Do not inherit to_trace_find. */
705 /* Do not inherit to_get_trace_state_variable_value. */
706 /* Do not inherit to_save_trace_data. */
707 /* Do not inherit to_upload_tracepoints. */
708 /* Do not inherit to_upload_trace_state_variables. */
709 /* Do not inherit to_get_raw_trace_data. */
710 /* Do not inherit to_get_min_fast_tracepoint_insn_len. */
711 /* Do not inherit to_set_disconnected_tracing. */
712 /* Do not inherit to_set_circular_trace_buffer. */
713 /* Do not inherit to_set_trace_buffer_size. */
714 /* Do not inherit to_set_trace_notes. */
715 /* Do not inherit to_get_tib_address. */
716 /* Do not inherit to_set_permissions. */
717 /* Do not inherit to_static_tracepoint_marker_at. */
718 /* Do not inherit to_static_tracepoint_markers_by_strid. */
719 /* Do not inherit to_traceframe_info. */
720 /* Do not inherit to_use_agent. */
721 /* Do not inherit to_can_use_agent. */
722 /* Do not inherit to_augmented_libraries_svr4_read. */
723 INHERIT (to_magic, t);
725 to_supports_evaluation_of_breakpoint_conditions. */
726 /* Do not inherit to_can_run_breakpoint_commands. */
727 /* Do not inherit to_memory_map. */
728 /* Do not inherit to_flash_erase. */
729 /* Do not inherit to_flash_done. */
733 /* Clean up a target struct so it no longer has any zero pointers in
734 it. Some entries are defaulted to a method that print an error,
735 others are hard-wired to a standard recursive default. */
737 #define de_fault(field, value) \
738 if (!current_target.field) \
739 current_target.field = value
742 (void (*) (char *, int))
745 (void (*) (struct target_ops *))
747 de_fault (deprecated_xfer_memory,
748 (int (*) (CORE_ADDR, gdb_byte *, int, int,
749 struct mem_attrib *, struct target_ops *))
751 de_fault (to_can_run,
752 (int (*) (struct target_ops *))
754 current_target.to_read_description = NULL;
758 /* Finally, position the target-stack beneath the squashed
759 "current_target". That way code looking for a non-inherited
760 target method can quickly and simply find it. */
761 current_target.beneath = target_stack;
764 setup_target_debug ();
767 /* Push a new target type into the stack of the existing target accessors,
768 possibly superseding some of the existing accessors.
770 Rather than allow an empty stack, we always have the dummy target at
771 the bottom stratum, so we can call the function vectors without
775 push_target (struct target_ops *t)
777 struct target_ops **cur;
779 /* Check magic number. If wrong, it probably means someone changed
780 the struct definition, but not all the places that initialize one. */
781 if (t->to_magic != OPS_MAGIC)
783 fprintf_unfiltered (gdb_stderr,
784 "Magic number of %s target struct wrong\n",
786 internal_error (__FILE__, __LINE__,
787 _("failed internal consistency check"));
790 /* Find the proper stratum to install this target in. */
791 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
793 if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum)
797 /* If there's already targets at this stratum, remove them. */
798 /* FIXME: cagney/2003-10-15: I think this should be popping all
799 targets to CUR, and not just those at this stratum level. */
800 while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum)
802 /* There's already something at this stratum level. Close it,
803 and un-hook it from the stack. */
804 struct target_ops *tmp = (*cur);
806 (*cur) = (*cur)->beneath;
811 /* We have removed all targets in our stratum, now add the new one. */
815 update_current_target ();
818 /* Remove a target_ops vector from the stack, wherever it may be.
819 Return how many times it was removed (0 or 1). */
822 unpush_target (struct target_ops *t)
824 struct target_ops **cur;
825 struct target_ops *tmp;
827 if (t->to_stratum == dummy_stratum)
828 internal_error (__FILE__, __LINE__,
829 _("Attempt to unpush the dummy target"));
831 /* Look for the specified target. Note that we assume that a target
832 can only occur once in the target stack. */
834 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
840 /* If we don't find target_ops, quit. Only open targets should be
845 /* Unchain the target. */
847 (*cur) = (*cur)->beneath;
850 update_current_target ();
852 /* Finally close the target. Note we do this after unchaining, so
853 any target method calls from within the target_close
854 implementation don't end up in T anymore. */
861 pop_all_targets_above (enum strata above_stratum)
863 while ((int) (current_target.to_stratum) > (int) above_stratum)
865 if (!unpush_target (target_stack))
867 fprintf_unfiltered (gdb_stderr,
868 "pop_all_targets couldn't find target %s\n",
869 target_stack->to_shortname);
870 internal_error (__FILE__, __LINE__,
871 _("failed internal consistency check"));
878 pop_all_targets (void)
880 pop_all_targets_above (dummy_stratum);
883 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
886 target_is_pushed (struct target_ops *t)
888 struct target_ops **cur;
890 /* Check magic number. If wrong, it probably means someone changed
891 the struct definition, but not all the places that initialize one. */
892 if (t->to_magic != OPS_MAGIC)
894 fprintf_unfiltered (gdb_stderr,
895 "Magic number of %s target struct wrong\n",
897 internal_error (__FILE__, __LINE__,
898 _("failed internal consistency check"));
901 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
908 /* Using the objfile specified in OBJFILE, find the address for the
909 current thread's thread-local storage with offset OFFSET. */
911 target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset)
913 volatile CORE_ADDR addr = 0;
914 struct target_ops *target;
916 for (target = current_target.beneath;
918 target = target->beneath)
920 if (target->to_get_thread_local_address != NULL)
925 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
927 ptid_t ptid = inferior_ptid;
928 volatile struct gdb_exception ex;
930 TRY_CATCH (ex, RETURN_MASK_ALL)
934 /* Fetch the load module address for this objfile. */
935 lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (),
937 /* If it's 0, throw the appropriate exception. */
939 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR,
940 _("TLS load module not found"));
942 addr = target->to_get_thread_local_address (target, ptid,
945 /* If an error occurred, print TLS related messages here. Otherwise,
946 throw the error to some higher catcher. */
949 int objfile_is_library = (objfile->flags & OBJF_SHARED);
953 case TLS_NO_LIBRARY_SUPPORT_ERROR:
954 error (_("Cannot find thread-local variables "
955 "in this thread library."));
957 case TLS_LOAD_MODULE_NOT_FOUND_ERROR:
958 if (objfile_is_library)
959 error (_("Cannot find shared library `%s' in dynamic"
960 " linker's load module list"), objfile_name (objfile));
962 error (_("Cannot find executable file `%s' in dynamic"
963 " linker's load module list"), objfile_name (objfile));
965 case TLS_NOT_ALLOCATED_YET_ERROR:
966 if (objfile_is_library)
967 error (_("The inferior has not yet allocated storage for"
968 " thread-local variables in\n"
969 "the shared library `%s'\n"
971 objfile_name (objfile), target_pid_to_str (ptid));
973 error (_("The inferior has not yet allocated storage for"
974 " thread-local variables in\n"
975 "the executable `%s'\n"
977 objfile_name (objfile), target_pid_to_str (ptid));
979 case TLS_GENERIC_ERROR:
980 if (objfile_is_library)
981 error (_("Cannot find thread-local storage for %s, "
982 "shared library %s:\n%s"),
983 target_pid_to_str (ptid),
984 objfile_name (objfile), ex.message);
986 error (_("Cannot find thread-local storage for %s, "
987 "executable file %s:\n%s"),
988 target_pid_to_str (ptid),
989 objfile_name (objfile), ex.message);
992 throw_exception (ex);
997 /* It wouldn't be wrong here to try a gdbarch method, too; finding
998 TLS is an ABI-specific thing. But we don't do that yet. */
1000 error (_("Cannot find thread-local variables on this target"));
1006 target_xfer_status_to_string (enum target_xfer_status err)
1008 #define CASE(X) case X: return #X
1011 CASE(TARGET_XFER_E_IO);
1012 CASE(TARGET_XFER_E_UNAVAILABLE);
1021 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1023 /* target_read_string -- read a null terminated string, up to LEN bytes,
1024 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1025 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1026 is responsible for freeing it. Return the number of bytes successfully
1030 target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop)
1032 int tlen, offset, i;
1036 int buffer_allocated;
1038 unsigned int nbytes_read = 0;
1040 gdb_assert (string);
1042 /* Small for testing. */
1043 buffer_allocated = 4;
1044 buffer = xmalloc (buffer_allocated);
1049 tlen = MIN (len, 4 - (memaddr & 3));
1050 offset = memaddr & 3;
1052 errcode = target_read_memory (memaddr & ~3, buf, sizeof buf);
1055 /* The transfer request might have crossed the boundary to an
1056 unallocated region of memory. Retry the transfer, requesting
1060 errcode = target_read_memory (memaddr, buf, 1);
1065 if (bufptr - buffer + tlen > buffer_allocated)
1069 bytes = bufptr - buffer;
1070 buffer_allocated *= 2;
1071 buffer = xrealloc (buffer, buffer_allocated);
1072 bufptr = buffer + bytes;
1075 for (i = 0; i < tlen; i++)
1077 *bufptr++ = buf[i + offset];
1078 if (buf[i + offset] == '\000')
1080 nbytes_read += i + 1;
1087 nbytes_read += tlen;
1096 struct target_section_table *
1097 target_get_section_table (struct target_ops *target)
1100 fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n");
1102 return (*target->to_get_section_table) (target);
1105 /* Find a section containing ADDR. */
1107 struct target_section *
1108 target_section_by_addr (struct target_ops *target, CORE_ADDR addr)
1110 struct target_section_table *table = target_get_section_table (target);
1111 struct target_section *secp;
1116 for (secp = table->sections; secp < table->sections_end; secp++)
1118 if (addr >= secp->addr && addr < secp->endaddr)
1124 /* Read memory from the live target, even if currently inspecting a
1125 traceframe. The return is the same as that of target_read. */
1127 static enum target_xfer_status
1128 target_read_live_memory (enum target_object object,
1129 ULONGEST memaddr, gdb_byte *myaddr, ULONGEST len,
1130 ULONGEST *xfered_len)
1132 enum target_xfer_status ret;
1133 struct cleanup *cleanup;
1135 /* Switch momentarily out of tfind mode so to access live memory.
1136 Note that this must not clear global state, such as the frame
1137 cache, which must still remain valid for the previous traceframe.
1138 We may be _building_ the frame cache at this point. */
1139 cleanup = make_cleanup_restore_traceframe_number ();
1140 set_traceframe_number (-1);
1142 ret = target_xfer_partial (current_target.beneath, object, NULL,
1143 myaddr, NULL, memaddr, len, xfered_len);
1145 do_cleanups (cleanup);
1149 /* Using the set of read-only target sections of OPS, read live
1150 read-only memory. Note that the actual reads start from the
1151 top-most target again.
1153 For interface/parameters/return description see target.h,
1156 static enum target_xfer_status
1157 memory_xfer_live_readonly_partial (struct target_ops *ops,
1158 enum target_object object,
1159 gdb_byte *readbuf, ULONGEST memaddr,
1160 ULONGEST len, ULONGEST *xfered_len)
1162 struct target_section *secp;
1163 struct target_section_table *table;
1165 secp = target_section_by_addr (ops, memaddr);
1167 && (bfd_get_section_flags (secp->the_bfd_section->owner,
1168 secp->the_bfd_section)
1171 struct target_section *p;
1172 ULONGEST memend = memaddr + len;
1174 table = target_get_section_table (ops);
1176 for (p = table->sections; p < table->sections_end; p++)
1178 if (memaddr >= p->addr)
1180 if (memend <= p->endaddr)
1182 /* Entire transfer is within this section. */
1183 return target_read_live_memory (object, memaddr,
1184 readbuf, len, xfered_len);
1186 else if (memaddr >= p->endaddr)
1188 /* This section ends before the transfer starts. */
1193 /* This section overlaps the transfer. Just do half. */
1194 len = p->endaddr - memaddr;
1195 return target_read_live_memory (object, memaddr,
1196 readbuf, len, xfered_len);
1202 return TARGET_XFER_EOF;
1205 /* Read memory from more than one valid target. A core file, for
1206 instance, could have some of memory but delegate other bits to
1207 the target below it. So, we must manually try all targets. */
1209 static enum target_xfer_status
1210 raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf,
1211 const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len,
1212 ULONGEST *xfered_len)
1214 enum target_xfer_status res;
1218 res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL,
1219 readbuf, writebuf, memaddr, len,
1221 if (res == TARGET_XFER_OK)
1224 /* Stop if the target reports that the memory is not available. */
1225 if (res == TARGET_XFER_E_UNAVAILABLE)
1228 /* We want to continue past core files to executables, but not
1229 past a running target's memory. */
1230 if (ops->to_has_all_memory (ops))
1235 while (ops != NULL);
1240 /* Perform a partial memory transfer.
1241 For docs see target.h, to_xfer_partial. */
1243 static enum target_xfer_status
1244 memory_xfer_partial_1 (struct target_ops *ops, enum target_object object,
1245 gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr,
1246 ULONGEST len, ULONGEST *xfered_len)
1248 enum target_xfer_status res;
1250 struct mem_region *region;
1251 struct inferior *inf;
1253 /* For accesses to unmapped overlay sections, read directly from
1254 files. Must do this first, as MEMADDR may need adjustment. */
1255 if (readbuf != NULL && overlay_debugging)
1257 struct obj_section *section = find_pc_overlay (memaddr);
1259 if (pc_in_unmapped_range (memaddr, section))
1261 struct target_section_table *table
1262 = target_get_section_table (ops);
1263 const char *section_name = section->the_bfd_section->name;
1265 memaddr = overlay_mapped_address (memaddr, section);
1266 return section_table_xfer_memory_partial (readbuf, writebuf,
1267 memaddr, len, xfered_len,
1269 table->sections_end,
1274 /* Try the executable files, if "trust-readonly-sections" is set. */
1275 if (readbuf != NULL && trust_readonly)
1277 struct target_section *secp;
1278 struct target_section_table *table;
1280 secp = target_section_by_addr (ops, memaddr);
1282 && (bfd_get_section_flags (secp->the_bfd_section->owner,
1283 secp->the_bfd_section)
1286 table = target_get_section_table (ops);
1287 return section_table_xfer_memory_partial (readbuf, writebuf,
1288 memaddr, len, xfered_len,
1290 table->sections_end,
1295 /* If reading unavailable memory in the context of traceframes, and
1296 this address falls within a read-only section, fallback to
1297 reading from live memory. */
1298 if (readbuf != NULL && get_traceframe_number () != -1)
1300 VEC(mem_range_s) *available;
1302 /* If we fail to get the set of available memory, then the
1303 target does not support querying traceframe info, and so we
1304 attempt reading from the traceframe anyway (assuming the
1305 target implements the old QTro packet then). */
1306 if (traceframe_available_memory (&available, memaddr, len))
1308 struct cleanup *old_chain;
1310 old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available);
1312 if (VEC_empty (mem_range_s, available)
1313 || VEC_index (mem_range_s, available, 0)->start != memaddr)
1315 /* Don't read into the traceframe's available
1317 if (!VEC_empty (mem_range_s, available))
1319 LONGEST oldlen = len;
1321 len = VEC_index (mem_range_s, available, 0)->start - memaddr;
1322 gdb_assert (len <= oldlen);
1325 do_cleanups (old_chain);
1327 /* This goes through the topmost target again. */
1328 res = memory_xfer_live_readonly_partial (ops, object,
1331 if (res == TARGET_XFER_OK)
1332 return TARGET_XFER_OK;
1335 /* No use trying further, we know some memory starting
1336 at MEMADDR isn't available. */
1338 return TARGET_XFER_E_UNAVAILABLE;
1342 /* Don't try to read more than how much is available, in
1343 case the target implements the deprecated QTro packet to
1344 cater for older GDBs (the target's knowledge of read-only
1345 sections may be outdated by now). */
1346 len = VEC_index (mem_range_s, available, 0)->length;
1348 do_cleanups (old_chain);
1352 /* Try GDB's internal data cache. */
1353 region = lookup_mem_region (memaddr);
1354 /* region->hi == 0 means there's no upper bound. */
1355 if (memaddr + len < region->hi || region->hi == 0)
1358 reg_len = region->hi - memaddr;
1360 switch (region->attrib.mode)
1363 if (writebuf != NULL)
1364 return TARGET_XFER_E_IO;
1368 if (readbuf != NULL)
1369 return TARGET_XFER_E_IO;
1373 /* We only support writing to flash during "load" for now. */
1374 if (writebuf != NULL)
1375 error (_("Writing to flash memory forbidden in this context"));
1379 return TARGET_XFER_E_IO;
1382 if (!ptid_equal (inferior_ptid, null_ptid))
1383 inf = find_inferior_pid (ptid_get_pid (inferior_ptid));
1388 /* The dcache reads whole cache lines; that doesn't play well
1389 with reading from a trace buffer, because reading outside of
1390 the collected memory range fails. */
1391 && get_traceframe_number () == -1
1392 && (region->attrib.cache
1393 || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY)
1394 || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY)))
1396 DCACHE *dcache = target_dcache_get_or_init ();
1399 if (readbuf != NULL)
1400 l = dcache_xfer_memory (ops, dcache, memaddr, readbuf, reg_len, 0);
1402 /* FIXME drow/2006-08-09: If we're going to preserve const
1403 correctness dcache_xfer_memory should take readbuf and
1405 l = dcache_xfer_memory (ops, dcache, memaddr, (void *) writebuf,
1408 return TARGET_XFER_E_IO;
1411 *xfered_len = (ULONGEST) l;
1412 return TARGET_XFER_OK;
1416 /* If none of those methods found the memory we wanted, fall back
1417 to a target partial transfer. Normally a single call to
1418 to_xfer_partial is enough; if it doesn't recognize an object
1419 it will call the to_xfer_partial of the next target down.
1420 But for memory this won't do. Memory is the only target
1421 object which can be read from more than one valid target.
1422 A core file, for instance, could have some of memory but
1423 delegate other bits to the target below it. So, we must
1424 manually try all targets. */
1426 res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len,
1429 /* Make sure the cache gets updated no matter what - if we are writing
1430 to the stack. Even if this write is not tagged as such, we still need
1431 to update the cache. */
1433 if (res == TARGET_XFER_OK
1436 && target_dcache_init_p ()
1437 && !region->attrib.cache
1438 && ((stack_cache_enabled_p () && object != TARGET_OBJECT_STACK_MEMORY)
1439 || (code_cache_enabled_p () && object != TARGET_OBJECT_CODE_MEMORY)))
1441 DCACHE *dcache = target_dcache_get ();
1443 dcache_update (dcache, memaddr, (void *) writebuf, reg_len);
1446 /* If we still haven't got anything, return the last error. We
1451 /* Perform a partial memory transfer. For docs see target.h,
1454 static enum target_xfer_status
1455 memory_xfer_partial (struct target_ops *ops, enum target_object object,
1456 gdb_byte *readbuf, const gdb_byte *writebuf,
1457 ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len)
1459 enum target_xfer_status res;
1461 /* Zero length requests are ok and require no work. */
1463 return TARGET_XFER_EOF;
1465 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1466 breakpoint insns, thus hiding out from higher layers whether
1467 there are software breakpoints inserted in the code stream. */
1468 if (readbuf != NULL)
1470 res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len,
1473 if (res == TARGET_XFER_OK && !show_memory_breakpoints)
1474 breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, res);
1479 struct cleanup *old_chain;
1481 /* A large write request is likely to be partially satisfied
1482 by memory_xfer_partial_1. We will continually malloc
1483 and free a copy of the entire write request for breakpoint
1484 shadow handling even though we only end up writing a small
1485 subset of it. Cap writes to 4KB to mitigate this. */
1486 len = min (4096, len);
1488 buf = xmalloc (len);
1489 old_chain = make_cleanup (xfree, buf);
1490 memcpy (buf, writebuf, len);
1492 breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len);
1493 res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len,
1496 do_cleanups (old_chain);
1503 restore_show_memory_breakpoints (void *arg)
1505 show_memory_breakpoints = (uintptr_t) arg;
1509 make_show_memory_breakpoints_cleanup (int show)
1511 int current = show_memory_breakpoints;
1513 show_memory_breakpoints = show;
1514 return make_cleanup (restore_show_memory_breakpoints,
1515 (void *) (uintptr_t) current);
1518 /* For docs see target.h, to_xfer_partial. */
1520 enum target_xfer_status
1521 target_xfer_partial (struct target_ops *ops,
1522 enum target_object object, const char *annex,
1523 gdb_byte *readbuf, const gdb_byte *writebuf,
1524 ULONGEST offset, ULONGEST len,
1525 ULONGEST *xfered_len)
1527 enum target_xfer_status retval;
1529 gdb_assert (ops->to_xfer_partial != NULL);
1531 /* Transfer is done when LEN is zero. */
1533 return TARGET_XFER_EOF;
1535 if (writebuf && !may_write_memory)
1536 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1537 core_addr_to_string_nz (offset), plongest (len));
1541 /* If this is a memory transfer, let the memory-specific code
1542 have a look at it instead. Memory transfers are more
1544 if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY
1545 || object == TARGET_OBJECT_CODE_MEMORY)
1546 retval = memory_xfer_partial (ops, object, readbuf,
1547 writebuf, offset, len, xfered_len);
1548 else if (object == TARGET_OBJECT_RAW_MEMORY)
1550 /* Request the normal memory object from other layers. */
1551 retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len,
1555 retval = ops->to_xfer_partial (ops, object, annex, readbuf,
1556 writebuf, offset, len, xfered_len);
1560 const unsigned char *myaddr = NULL;
1562 fprintf_unfiltered (gdb_stdlog,
1563 "%s:target_xfer_partial "
1564 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1567 (annex ? annex : "(null)"),
1568 host_address_to_string (readbuf),
1569 host_address_to_string (writebuf),
1570 core_addr_to_string_nz (offset),
1571 pulongest (len), retval,
1572 pulongest (*xfered_len));
1578 if (retval == TARGET_XFER_OK && myaddr != NULL)
1582 fputs_unfiltered (", bytes =", gdb_stdlog);
1583 for (i = 0; i < *xfered_len; i++)
1585 if ((((intptr_t) &(myaddr[i])) & 0xf) == 0)
1587 if (targetdebug < 2 && i > 0)
1589 fprintf_unfiltered (gdb_stdlog, " ...");
1592 fprintf_unfiltered (gdb_stdlog, "\n");
1595 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
1599 fputc_unfiltered ('\n', gdb_stdlog);
1602 /* Check implementations of to_xfer_partial update *XFERED_LEN
1603 properly. Do assertion after printing debug messages, so that we
1604 can find more clues on assertion failure from debugging messages. */
1605 if (retval == TARGET_XFER_OK || retval == TARGET_XFER_E_UNAVAILABLE)
1606 gdb_assert (*xfered_len > 0);
1611 /* Read LEN bytes of target memory at address MEMADDR, placing the
1612 results in GDB's memory at MYADDR. Returns either 0 for success or
1613 TARGET_XFER_E_IO if any error occurs.
1615 If an error occurs, no guarantee is made about the contents of the data at
1616 MYADDR. In particular, the caller should not depend upon partial reads
1617 filling the buffer with good data. There is no way for the caller to know
1618 how much good data might have been transfered anyway. Callers that can
1619 deal with partial reads should call target_read (which will retry until
1620 it makes no progress, and then return how much was transferred). */
1623 target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1625 /* Dispatch to the topmost target, not the flattened current_target.
1626 Memory accesses check target->to_has_(all_)memory, and the
1627 flattened target doesn't inherit those. */
1628 if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL,
1629 myaddr, memaddr, len) == len)
1632 return TARGET_XFER_E_IO;
1635 /* Like target_read_memory, but specify explicitly that this is a read
1636 from the target's raw memory. That is, this read bypasses the
1637 dcache, breakpoint shadowing, etc. */
1640 target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1642 /* See comment in target_read_memory about why the request starts at
1643 current_target.beneath. */
1644 if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL,
1645 myaddr, memaddr, len) == len)
1648 return TARGET_XFER_E_IO;
1651 /* Like target_read_memory, but specify explicitly that this is a read from
1652 the target's stack. This may trigger different cache behavior. */
1655 target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1657 /* See comment in target_read_memory about why the request starts at
1658 current_target.beneath. */
1659 if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL,
1660 myaddr, memaddr, len) == len)
1663 return TARGET_XFER_E_IO;
1666 /* Like target_read_memory, but specify explicitly that this is a read from
1667 the target's code. This may trigger different cache behavior. */
1670 target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1672 /* See comment in target_read_memory about why the request starts at
1673 current_target.beneath. */
1674 if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL,
1675 myaddr, memaddr, len) == len)
1678 return TARGET_XFER_E_IO;
1681 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1682 Returns either 0 for success or TARGET_XFER_E_IO if any
1683 error occurs. If an error occurs, no guarantee is made about how
1684 much data got written. Callers that can deal with partial writes
1685 should call target_write. */
1688 target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
1690 /* See comment in target_read_memory about why the request starts at
1691 current_target.beneath. */
1692 if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL,
1693 myaddr, memaddr, len) == len)
1696 return TARGET_XFER_E_IO;
1699 /* Write LEN bytes from MYADDR to target raw memory at address
1700 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1701 if any error occurs. If an error occurs, no guarantee is made
1702 about how much data got written. Callers that can deal with
1703 partial writes should call target_write. */
1706 target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
1708 /* See comment in target_read_memory about why the request starts at
1709 current_target.beneath. */
1710 if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL,
1711 myaddr, memaddr, len) == len)
1714 return TARGET_XFER_E_IO;
1717 /* Fetch the target's memory map. */
1720 target_memory_map (void)
1722 VEC(mem_region_s) *result;
1723 struct mem_region *last_one, *this_one;
1725 struct target_ops *t;
1728 fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n");
1730 result = current_target.to_memory_map (¤t_target);
1734 qsort (VEC_address (mem_region_s, result),
1735 VEC_length (mem_region_s, result),
1736 sizeof (struct mem_region), mem_region_cmp);
1738 /* Check that regions do not overlap. Simultaneously assign
1739 a numbering for the "mem" commands to use to refer to
1742 for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++)
1744 this_one->number = ix;
1746 if (last_one && last_one->hi > this_one->lo)
1748 warning (_("Overlapping regions in memory map: ignoring"));
1749 VEC_free (mem_region_s, result);
1752 last_one = this_one;
1759 target_flash_erase (ULONGEST address, LONGEST length)
1762 fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n",
1763 hex_string (address), phex (length, 0));
1764 current_target.to_flash_erase (¤t_target, address, length);
1768 target_flash_done (void)
1771 fprintf_unfiltered (gdb_stdlog, "target_flash_done\n");
1772 current_target.to_flash_done (¤t_target);
1776 show_trust_readonly (struct ui_file *file, int from_tty,
1777 struct cmd_list_element *c, const char *value)
1779 fprintf_filtered (file,
1780 _("Mode for reading from readonly sections is %s.\n"),
1784 /* More generic transfers. */
1786 static enum target_xfer_status
1787 default_xfer_partial (struct target_ops *ops, enum target_object object,
1788 const char *annex, gdb_byte *readbuf,
1789 const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
1790 ULONGEST *xfered_len)
1792 if (object == TARGET_OBJECT_MEMORY
1793 && ops->deprecated_xfer_memory != NULL)
1794 /* If available, fall back to the target's
1795 "deprecated_xfer_memory" method. */
1800 if (writebuf != NULL)
1802 void *buffer = xmalloc (len);
1803 struct cleanup *cleanup = make_cleanup (xfree, buffer);
1805 memcpy (buffer, writebuf, len);
1806 xfered = ops->deprecated_xfer_memory (offset, buffer, len,
1807 1/*write*/, NULL, ops);
1808 do_cleanups (cleanup);
1810 if (readbuf != NULL)
1811 xfered = ops->deprecated_xfer_memory (offset, readbuf, len,
1812 0/*read*/, NULL, ops);
1815 *xfered_len = (ULONGEST) xfered;
1816 return TARGET_XFER_E_IO;
1818 else if (xfered == 0 && errno == 0)
1819 /* "deprecated_xfer_memory" uses 0, cross checked against
1820 ERRNO as one indication of an error. */
1821 return TARGET_XFER_EOF;
1823 return TARGET_XFER_E_IO;
1827 gdb_assert (ops->beneath != NULL);
1828 return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
1829 readbuf, writebuf, offset, len,
1834 /* Target vector read/write partial wrapper functions. */
1836 static enum target_xfer_status
1837 target_read_partial (struct target_ops *ops,
1838 enum target_object object,
1839 const char *annex, gdb_byte *buf,
1840 ULONGEST offset, ULONGEST len,
1841 ULONGEST *xfered_len)
1843 return target_xfer_partial (ops, object, annex, buf, NULL, offset, len,
1847 static enum target_xfer_status
1848 target_write_partial (struct target_ops *ops,
1849 enum target_object object,
1850 const char *annex, const gdb_byte *buf,
1851 ULONGEST offset, LONGEST len, ULONGEST *xfered_len)
1853 return target_xfer_partial (ops, object, annex, NULL, buf, offset, len,
1857 /* Wrappers to perform the full transfer. */
1859 /* For docs on target_read see target.h. */
1862 target_read (struct target_ops *ops,
1863 enum target_object object,
1864 const char *annex, gdb_byte *buf,
1865 ULONGEST offset, LONGEST len)
1869 while (xfered < len)
1871 ULONGEST xfered_len;
1872 enum target_xfer_status status;
1874 status = target_read_partial (ops, object, annex,
1875 (gdb_byte *) buf + xfered,
1876 offset + xfered, len - xfered,
1879 /* Call an observer, notifying them of the xfer progress? */
1880 if (status == TARGET_XFER_EOF)
1882 else if (status == TARGET_XFER_OK)
1884 xfered += xfered_len;
1894 /* Assuming that the entire [begin, end) range of memory cannot be
1895 read, try to read whatever subrange is possible to read.
1897 The function returns, in RESULT, either zero or one memory block.
1898 If there's a readable subrange at the beginning, it is completely
1899 read and returned. Any further readable subrange will not be read.
1900 Otherwise, if there's a readable subrange at the end, it will be
1901 completely read and returned. Any readable subranges before it
1902 (obviously, not starting at the beginning), will be ignored. In
1903 other cases -- either no readable subrange, or readable subrange(s)
1904 that is neither at the beginning, or end, nothing is returned.
1906 The purpose of this function is to handle a read across a boundary
1907 of accessible memory in a case when memory map is not available.
1908 The above restrictions are fine for this case, but will give
1909 incorrect results if the memory is 'patchy'. However, supporting
1910 'patchy' memory would require trying to read every single byte,
1911 and it seems unacceptable solution. Explicit memory map is
1912 recommended for this case -- and target_read_memory_robust will
1913 take care of reading multiple ranges then. */
1916 read_whatever_is_readable (struct target_ops *ops,
1917 ULONGEST begin, ULONGEST end,
1918 VEC(memory_read_result_s) **result)
1920 gdb_byte *buf = xmalloc (end - begin);
1921 ULONGEST current_begin = begin;
1922 ULONGEST current_end = end;
1924 memory_read_result_s r;
1925 ULONGEST xfered_len;
1927 /* If we previously failed to read 1 byte, nothing can be done here. */
1928 if (end - begin <= 1)
1934 /* Check that either first or the last byte is readable, and give up
1935 if not. This heuristic is meant to permit reading accessible memory
1936 at the boundary of accessible region. */
1937 if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL,
1938 buf, begin, 1, &xfered_len) == TARGET_XFER_OK)
1943 else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL,
1944 buf + (end-begin) - 1, end - 1, 1,
1945 &xfered_len) == TARGET_XFER_OK)
1956 /* Loop invariant is that the [current_begin, current_end) was previously
1957 found to be not readable as a whole.
1959 Note loop condition -- if the range has 1 byte, we can't divide the range
1960 so there's no point trying further. */
1961 while (current_end - current_begin > 1)
1963 ULONGEST first_half_begin, first_half_end;
1964 ULONGEST second_half_begin, second_half_end;
1966 ULONGEST middle = current_begin + (current_end - current_begin)/2;
1970 first_half_begin = current_begin;
1971 first_half_end = middle;
1972 second_half_begin = middle;
1973 second_half_end = current_end;
1977 first_half_begin = middle;
1978 first_half_end = current_end;
1979 second_half_begin = current_begin;
1980 second_half_end = middle;
1983 xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL,
1984 buf + (first_half_begin - begin),
1986 first_half_end - first_half_begin);
1988 if (xfer == first_half_end - first_half_begin)
1990 /* This half reads up fine. So, the error must be in the
1992 current_begin = second_half_begin;
1993 current_end = second_half_end;
1997 /* This half is not readable. Because we've tried one byte, we
1998 know some part of this half if actually redable. Go to the next
1999 iteration to divide again and try to read.
2001 We don't handle the other half, because this function only tries
2002 to read a single readable subrange. */
2003 current_begin = first_half_begin;
2004 current_end = first_half_end;
2010 /* The [begin, current_begin) range has been read. */
2012 r.end = current_begin;
2017 /* The [current_end, end) range has been read. */
2018 LONGEST rlen = end - current_end;
2020 r.data = xmalloc (rlen);
2021 memcpy (r.data, buf + current_end - begin, rlen);
2022 r.begin = current_end;
2026 VEC_safe_push(memory_read_result_s, (*result), &r);
2030 free_memory_read_result_vector (void *x)
2032 VEC(memory_read_result_s) *v = x;
2033 memory_read_result_s *current;
2036 for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix)
2038 xfree (current->data);
2040 VEC_free (memory_read_result_s, v);
2043 VEC(memory_read_result_s) *
2044 read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len)
2046 VEC(memory_read_result_s) *result = 0;
2049 while (xfered < len)
2051 struct mem_region *region = lookup_mem_region (offset + xfered);
2054 /* If there is no explicit region, a fake one should be created. */
2055 gdb_assert (region);
2057 if (region->hi == 0)
2058 rlen = len - xfered;
2060 rlen = region->hi - offset;
2062 if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO)
2064 /* Cannot read this region. Note that we can end up here only
2065 if the region is explicitly marked inaccessible, or
2066 'inaccessible-by-default' is in effect. */
2071 LONGEST to_read = min (len - xfered, rlen);
2072 gdb_byte *buffer = (gdb_byte *)xmalloc (to_read);
2074 LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2075 (gdb_byte *) buffer,
2076 offset + xfered, to_read);
2077 /* Call an observer, notifying them of the xfer progress? */
2080 /* Got an error reading full chunk. See if maybe we can read
2083 read_whatever_is_readable (ops, offset + xfered,
2084 offset + xfered + to_read, &result);
2089 struct memory_read_result r;
2091 r.begin = offset + xfered;
2092 r.end = r.begin + xfer;
2093 VEC_safe_push (memory_read_result_s, result, &r);
2103 /* An alternative to target_write with progress callbacks. */
2106 target_write_with_progress (struct target_ops *ops,
2107 enum target_object object,
2108 const char *annex, const gdb_byte *buf,
2109 ULONGEST offset, LONGEST len,
2110 void (*progress) (ULONGEST, void *), void *baton)
2114 /* Give the progress callback a chance to set up. */
2116 (*progress) (0, baton);
2118 while (xfered < len)
2120 ULONGEST xfered_len;
2121 enum target_xfer_status status;
2123 status = target_write_partial (ops, object, annex,
2124 (gdb_byte *) buf + xfered,
2125 offset + xfered, len - xfered,
2128 if (status == TARGET_XFER_EOF)
2130 if (TARGET_XFER_STATUS_ERROR_P (status))
2133 gdb_assert (status == TARGET_XFER_OK);
2135 (*progress) (xfered_len, baton);
2137 xfered += xfered_len;
2143 /* For docs on target_write see target.h. */
2146 target_write (struct target_ops *ops,
2147 enum target_object object,
2148 const char *annex, const gdb_byte *buf,
2149 ULONGEST offset, LONGEST len)
2151 return target_write_with_progress (ops, object, annex, buf, offset, len,
2155 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2156 the size of the transferred data. PADDING additional bytes are
2157 available in *BUF_P. This is a helper function for
2158 target_read_alloc; see the declaration of that function for more
2162 target_read_alloc_1 (struct target_ops *ops, enum target_object object,
2163 const char *annex, gdb_byte **buf_p, int padding)
2165 size_t buf_alloc, buf_pos;
2168 /* This function does not have a length parameter; it reads the
2169 entire OBJECT). Also, it doesn't support objects fetched partly
2170 from one target and partly from another (in a different stratum,
2171 e.g. a core file and an executable). Both reasons make it
2172 unsuitable for reading memory. */
2173 gdb_assert (object != TARGET_OBJECT_MEMORY);
2175 /* Start by reading up to 4K at a time. The target will throttle
2176 this number down if necessary. */
2178 buf = xmalloc (buf_alloc);
2182 ULONGEST xfered_len;
2183 enum target_xfer_status status;
2185 status = target_read_partial (ops, object, annex, &buf[buf_pos],
2186 buf_pos, buf_alloc - buf_pos - padding,
2189 if (status == TARGET_XFER_EOF)
2191 /* Read all there was. */
2198 else if (status != TARGET_XFER_OK)
2200 /* An error occurred. */
2202 return TARGET_XFER_E_IO;
2205 buf_pos += xfered_len;
2207 /* If the buffer is filling up, expand it. */
2208 if (buf_alloc < buf_pos * 2)
2211 buf = xrealloc (buf, buf_alloc);
2218 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2219 the size of the transferred data. See the declaration in "target.h"
2220 function for more information about the return value. */
2223 target_read_alloc (struct target_ops *ops, enum target_object object,
2224 const char *annex, gdb_byte **buf_p)
2226 return target_read_alloc_1 (ops, object, annex, buf_p, 0);
2229 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2230 returned as a string, allocated using xmalloc. If an error occurs
2231 or the transfer is unsupported, NULL is returned. Empty objects
2232 are returned as allocated but empty strings. A warning is issued
2233 if the result contains any embedded NUL bytes. */
2236 target_read_stralloc (struct target_ops *ops, enum target_object object,
2241 LONGEST i, transferred;
2243 transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1);
2244 bufstr = (char *) buffer;
2246 if (transferred < 0)
2249 if (transferred == 0)
2250 return xstrdup ("");
2252 bufstr[transferred] = 0;
2254 /* Check for embedded NUL bytes; but allow trailing NULs. */
2255 for (i = strlen (bufstr); i < transferred; i++)
2258 warning (_("target object %d, annex %s, "
2259 "contained unexpected null characters"),
2260 (int) object, annex ? annex : "(none)");
2267 /* Memory transfer methods. */
2270 get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf,
2273 /* This method is used to read from an alternate, non-current
2274 target. This read must bypass the overlay support (as symbols
2275 don't match this target), and GDB's internal cache (wrong cache
2276 for this target). */
2277 if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len)
2279 memory_error (TARGET_XFER_E_IO, addr);
2283 get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr,
2284 int len, enum bfd_endian byte_order)
2286 gdb_byte buf[sizeof (ULONGEST)];
2288 gdb_assert (len <= sizeof (buf));
2289 get_target_memory (ops, addr, buf, len);
2290 return extract_unsigned_integer (buf, len, byte_order);
2296 target_insert_breakpoint (struct gdbarch *gdbarch,
2297 struct bp_target_info *bp_tgt)
2299 if (!may_insert_breakpoints)
2301 warning (_("May not insert breakpoints"));
2305 return current_target.to_insert_breakpoint (¤t_target,
2312 target_remove_breakpoint (struct gdbarch *gdbarch,
2313 struct bp_target_info *bp_tgt)
2315 /* This is kind of a weird case to handle, but the permission might
2316 have been changed after breakpoints were inserted - in which case
2317 we should just take the user literally and assume that any
2318 breakpoints should be left in place. */
2319 if (!may_insert_breakpoints)
2321 warning (_("May not remove breakpoints"));
2325 return current_target.to_remove_breakpoint (¤t_target,
2330 target_info (char *args, int from_tty)
2332 struct target_ops *t;
2333 int has_all_mem = 0;
2335 if (symfile_objfile != NULL)
2336 printf_unfiltered (_("Symbols from \"%s\".\n"),
2337 objfile_name (symfile_objfile));
2339 for (t = target_stack; t != NULL; t = t->beneath)
2341 if (!(*t->to_has_memory) (t))
2344 if ((int) (t->to_stratum) <= (int) dummy_stratum)
2347 printf_unfiltered (_("\tWhile running this, "
2348 "GDB does not access memory from...\n"));
2349 printf_unfiltered ("%s:\n", t->to_longname);
2350 (t->to_files_info) (t);
2351 has_all_mem = (*t->to_has_all_memory) (t);
2355 /* This function is called before any new inferior is created, e.g.
2356 by running a program, attaching, or connecting to a target.
2357 It cleans up any state from previous invocations which might
2358 change between runs. This is a subset of what target_preopen
2359 resets (things which might change between targets). */
2362 target_pre_inferior (int from_tty)
2364 /* Clear out solib state. Otherwise the solib state of the previous
2365 inferior might have survived and is entirely wrong for the new
2366 target. This has been observed on GNU/Linux using glibc 2.3. How
2378 Cannot access memory at address 0xdeadbeef
2381 /* In some OSs, the shared library list is the same/global/shared
2382 across inferiors. If code is shared between processes, so are
2383 memory regions and features. */
2384 if (!gdbarch_has_global_solist (target_gdbarch ()))
2386 no_shared_libraries (NULL, from_tty);
2388 invalidate_target_mem_regions ();
2390 target_clear_description ();
2393 agent_capability_invalidate ();
2396 /* Callback for iterate_over_inferiors. Gets rid of the given
2400 dispose_inferior (struct inferior *inf, void *args)
2402 struct thread_info *thread;
2404 thread = any_thread_of_process (inf->pid);
2407 switch_to_thread (thread->ptid);
2409 /* Core inferiors actually should be detached, not killed. */
2410 if (target_has_execution)
2413 target_detach (NULL, 0);
2419 /* This is to be called by the open routine before it does
2423 target_preopen (int from_tty)
2427 if (have_inferiors ())
2430 || !have_live_inferiors ()
2431 || query (_("A program is being debugged already. Kill it? ")))
2432 iterate_over_inferiors (dispose_inferior, NULL);
2434 error (_("Program not killed."));
2437 /* Calling target_kill may remove the target from the stack. But if
2438 it doesn't (which seems like a win for UDI), remove it now. */
2439 /* Leave the exec target, though. The user may be switching from a
2440 live process to a core of the same program. */
2441 pop_all_targets_above (file_stratum);
2443 target_pre_inferior (from_tty);
2446 /* Detach a target after doing deferred register stores. */
2449 target_detach (const char *args, int from_tty)
2451 struct target_ops* t;
2453 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2454 /* Don't remove global breakpoints here. They're removed on
2455 disconnection from the target. */
2458 /* If we're in breakpoints-always-inserted mode, have to remove
2459 them before detaching. */
2460 remove_breakpoints_pid (ptid_get_pid (inferior_ptid));
2462 prepare_for_detach ();
2464 current_target.to_detach (¤t_target, args, from_tty);
2466 fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n",
2471 target_disconnect (char *args, int from_tty)
2473 struct target_ops *t;
2475 /* If we're in breakpoints-always-inserted mode or if breakpoints
2476 are global across processes, we have to remove them before
2478 remove_breakpoints ();
2480 for (t = current_target.beneath; t != NULL; t = t->beneath)
2481 if (t->to_disconnect != NULL)
2484 fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n",
2486 t->to_disconnect (t, args, from_tty);
2494 target_wait (ptid_t ptid, struct target_waitstatus *status, int options)
2496 struct target_ops *t;
2497 ptid_t retval = (current_target.to_wait) (¤t_target, ptid,
2502 char *status_string;
2503 char *options_string;
2505 status_string = target_waitstatus_to_string (status);
2506 options_string = target_options_to_string (options);
2507 fprintf_unfiltered (gdb_stdlog,
2508 "target_wait (%d, status, options={%s})"
2510 ptid_get_pid (ptid), options_string,
2511 ptid_get_pid (retval), status_string);
2512 xfree (status_string);
2513 xfree (options_string);
2520 target_pid_to_str (ptid_t ptid)
2522 return (*current_target.to_pid_to_str) (¤t_target, ptid);
2526 target_thread_name (struct thread_info *info)
2528 return current_target.to_thread_name (¤t_target, info);
2532 target_resume (ptid_t ptid, int step, enum gdb_signal signal)
2534 struct target_ops *t;
2536 target_dcache_invalidate ();
2538 current_target.to_resume (¤t_target, ptid, step, signal);
2540 fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n",
2541 ptid_get_pid (ptid),
2542 step ? "step" : "continue",
2543 gdb_signal_to_name (signal));
2545 registers_changed_ptid (ptid);
2546 set_executing (ptid, 1);
2547 set_running (ptid, 1);
2548 clear_inline_frame_state (ptid);
2552 target_pass_signals (int numsigs, unsigned char *pass_signals)
2558 fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {",
2561 for (i = 0; i < numsigs; i++)
2562 if (pass_signals[i])
2563 fprintf_unfiltered (gdb_stdlog, " %s",
2564 gdb_signal_to_name (i));
2566 fprintf_unfiltered (gdb_stdlog, " })\n");
2569 (*current_target.to_pass_signals) (¤t_target, numsigs, pass_signals);
2573 target_program_signals (int numsigs, unsigned char *program_signals)
2579 fprintf_unfiltered (gdb_stdlog, "target_program_signals (%d, {",
2582 for (i = 0; i < numsigs; i++)
2583 if (program_signals[i])
2584 fprintf_unfiltered (gdb_stdlog, " %s",
2585 gdb_signal_to_name (i));
2587 fprintf_unfiltered (gdb_stdlog, " })\n");
2590 (*current_target.to_program_signals) (¤t_target,
2591 numsigs, program_signals);
2595 default_follow_fork (struct target_ops *self, int follow_child,
2598 /* Some target returned a fork event, but did not know how to follow it. */
2599 internal_error (__FILE__, __LINE__,
2600 _("could not find a target to follow fork"));
2603 /* Look through the list of possible targets for a target that can
2607 target_follow_fork (int follow_child, int detach_fork)
2609 int retval = current_target.to_follow_fork (¤t_target,
2610 follow_child, detach_fork);
2613 fprintf_unfiltered (gdb_stdlog,
2614 "target_follow_fork (%d, %d) = %d\n",
2615 follow_child, detach_fork, retval);
2620 default_mourn_inferior (struct target_ops *self)
2622 internal_error (__FILE__, __LINE__,
2623 _("could not find a target to follow mourn inferior"));
2627 target_mourn_inferior (void)
2629 current_target.to_mourn_inferior (¤t_target);
2631 fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n");
2633 /* We no longer need to keep handles on any of the object files.
2634 Make sure to release them to avoid unnecessarily locking any
2635 of them while we're not actually debugging. */
2636 bfd_cache_close_all ();
2639 /* Look for a target which can describe architectural features, starting
2640 from TARGET. If we find one, return its description. */
2642 const struct target_desc *
2643 target_read_description (struct target_ops *target)
2645 struct target_ops *t;
2647 for (t = target; t != NULL; t = t->beneath)
2648 if (t->to_read_description != NULL)
2650 const struct target_desc *tdesc;
2652 tdesc = t->to_read_description (t);
2660 /* This implements a basic search of memory, reading target memory and
2661 performing the search here (as opposed to performing the search in on the
2662 target side with, for example, gdbserver). */
2665 simple_search_memory (struct target_ops *ops,
2666 CORE_ADDR start_addr, ULONGEST search_space_len,
2667 const gdb_byte *pattern, ULONGEST pattern_len,
2668 CORE_ADDR *found_addrp)
2670 /* NOTE: also defined in find.c testcase. */
2671 #define SEARCH_CHUNK_SIZE 16000
2672 const unsigned chunk_size = SEARCH_CHUNK_SIZE;
2673 /* Buffer to hold memory contents for searching. */
2674 gdb_byte *search_buf;
2675 unsigned search_buf_size;
2676 struct cleanup *old_cleanups;
2678 search_buf_size = chunk_size + pattern_len - 1;
2680 /* No point in trying to allocate a buffer larger than the search space. */
2681 if (search_space_len < search_buf_size)
2682 search_buf_size = search_space_len;
2684 search_buf = malloc (search_buf_size);
2685 if (search_buf == NULL)
2686 error (_("Unable to allocate memory to perform the search."));
2687 old_cleanups = make_cleanup (free_current_contents, &search_buf);
2689 /* Prime the search buffer. */
2691 if (target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2692 search_buf, start_addr, search_buf_size) != search_buf_size)
2694 warning (_("Unable to access %s bytes of target "
2695 "memory at %s, halting search."),
2696 pulongest (search_buf_size), hex_string (start_addr));
2697 do_cleanups (old_cleanups);
2701 /* Perform the search.
2703 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2704 When we've scanned N bytes we copy the trailing bytes to the start and
2705 read in another N bytes. */
2707 while (search_space_len >= pattern_len)
2709 gdb_byte *found_ptr;
2710 unsigned nr_search_bytes = min (search_space_len, search_buf_size);
2712 found_ptr = memmem (search_buf, nr_search_bytes,
2713 pattern, pattern_len);
2715 if (found_ptr != NULL)
2717 CORE_ADDR found_addr = start_addr + (found_ptr - search_buf);
2719 *found_addrp = found_addr;
2720 do_cleanups (old_cleanups);
2724 /* Not found in this chunk, skip to next chunk. */
2726 /* Don't let search_space_len wrap here, it's unsigned. */
2727 if (search_space_len >= chunk_size)
2728 search_space_len -= chunk_size;
2730 search_space_len = 0;
2732 if (search_space_len >= pattern_len)
2734 unsigned keep_len = search_buf_size - chunk_size;
2735 CORE_ADDR read_addr = start_addr + chunk_size + keep_len;
2738 /* Copy the trailing part of the previous iteration to the front
2739 of the buffer for the next iteration. */
2740 gdb_assert (keep_len == pattern_len - 1);
2741 memcpy (search_buf, search_buf + chunk_size, keep_len);
2743 nr_to_read = min (search_space_len - keep_len, chunk_size);
2745 if (target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2746 search_buf + keep_len, read_addr,
2747 nr_to_read) != nr_to_read)
2749 warning (_("Unable to access %s bytes of target "
2750 "memory at %s, halting search."),
2751 plongest (nr_to_read),
2752 hex_string (read_addr));
2753 do_cleanups (old_cleanups);
2757 start_addr += chunk_size;
2763 do_cleanups (old_cleanups);
2767 /* Default implementation of memory-searching. */
2770 default_search_memory (struct target_ops *self,
2771 CORE_ADDR start_addr, ULONGEST search_space_len,
2772 const gdb_byte *pattern, ULONGEST pattern_len,
2773 CORE_ADDR *found_addrp)
2775 /* Start over from the top of the target stack. */
2776 return simple_search_memory (current_target.beneath,
2777 start_addr, search_space_len,
2778 pattern, pattern_len, found_addrp);
2781 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2782 sequence of bytes in PATTERN with length PATTERN_LEN.
2784 The result is 1 if found, 0 if not found, and -1 if there was an error
2785 requiring halting of the search (e.g. memory read error).
2786 If the pattern is found the address is recorded in FOUND_ADDRP. */
2789 target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len,
2790 const gdb_byte *pattern, ULONGEST pattern_len,
2791 CORE_ADDR *found_addrp)
2796 fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n",
2797 hex_string (start_addr));
2799 found = current_target.to_search_memory (¤t_target, start_addr,
2801 pattern, pattern_len, found_addrp);
2804 fprintf_unfiltered (gdb_stdlog, " = %d\n", found);
2809 /* Look through the currently pushed targets. If none of them will
2810 be able to restart the currently running process, issue an error
2814 target_require_runnable (void)
2816 struct target_ops *t;
2818 for (t = target_stack; t != NULL; t = t->beneath)
2820 /* If this target knows how to create a new program, then
2821 assume we will still be able to after killing the current
2822 one. Either killing and mourning will not pop T, or else
2823 find_default_run_target will find it again. */
2824 if (t->to_create_inferior != NULL)
2827 /* Do not worry about thread_stratum targets that can not
2828 create inferiors. Assume they will be pushed again if
2829 necessary, and continue to the process_stratum. */
2830 if (t->to_stratum == thread_stratum
2831 || t->to_stratum == arch_stratum)
2834 error (_("The \"%s\" target does not support \"run\". "
2835 "Try \"help target\" or \"continue\"."),
2839 /* This function is only called if the target is running. In that
2840 case there should have been a process_stratum target and it
2841 should either know how to create inferiors, or not... */
2842 internal_error (__FILE__, __LINE__, _("No targets found"));
2845 /* Look through the list of possible targets for a target that can
2846 execute a run or attach command without any other data. This is
2847 used to locate the default process stratum.
2849 If DO_MESG is not NULL, the result is always valid (error() is
2850 called for errors); else, return NULL on error. */
2852 static struct target_ops *
2853 find_default_run_target (char *do_mesg)
2855 struct target_ops **t;
2856 struct target_ops *runable = NULL;
2861 for (t = target_structs; t < target_structs + target_struct_size;
2864 if ((*t)->to_can_run && target_can_run (*t))
2874 error (_("Don't know how to %s. Try \"help target\"."), do_mesg);
2883 find_default_attach (struct target_ops *ops, char *args, int from_tty)
2885 struct target_ops *t;
2887 t = find_default_run_target ("attach");
2888 (t->to_attach) (t, args, from_tty);
2893 find_default_create_inferior (struct target_ops *ops,
2894 char *exec_file, char *allargs, char **env,
2897 struct target_ops *t;
2899 t = find_default_run_target ("run");
2900 (t->to_create_inferior) (t, exec_file, allargs, env, from_tty);
2905 find_default_can_async_p (struct target_ops *ignore)
2907 struct target_ops *t;
2909 /* This may be called before the target is pushed on the stack;
2910 look for the default process stratum. If there's none, gdb isn't
2911 configured with a native debugger, and target remote isn't
2913 t = find_default_run_target (NULL);
2914 if (t && t->to_can_async_p != delegate_can_async_p)
2915 return (t->to_can_async_p) (t);
2920 find_default_is_async_p (struct target_ops *ignore)
2922 struct target_ops *t;
2924 /* This may be called before the target is pushed on the stack;
2925 look for the default process stratum. If there's none, gdb isn't
2926 configured with a native debugger, and target remote isn't
2928 t = find_default_run_target (NULL);
2929 if (t && t->to_is_async_p != delegate_is_async_p)
2930 return (t->to_is_async_p) (t);
2935 find_default_supports_non_stop (struct target_ops *self)
2937 struct target_ops *t;
2939 t = find_default_run_target (NULL);
2940 if (t && t->to_supports_non_stop)
2941 return (t->to_supports_non_stop) (t);
2946 target_supports_non_stop (void)
2948 struct target_ops *t;
2950 for (t = ¤t_target; t != NULL; t = t->beneath)
2951 if (t->to_supports_non_stop)
2952 return t->to_supports_non_stop (t);
2957 /* Implement the "info proc" command. */
2960 target_info_proc (char *args, enum info_proc_what what)
2962 struct target_ops *t;
2964 /* If we're already connected to something that can get us OS
2965 related data, use it. Otherwise, try using the native
2967 if (current_target.to_stratum >= process_stratum)
2968 t = current_target.beneath;
2970 t = find_default_run_target (NULL);
2972 for (; t != NULL; t = t->beneath)
2974 if (t->to_info_proc != NULL)
2976 t->to_info_proc (t, args, what);
2979 fprintf_unfiltered (gdb_stdlog,
2980 "target_info_proc (\"%s\", %d)\n", args, what);
2990 find_default_supports_disable_randomization (struct target_ops *self)
2992 struct target_ops *t;
2994 t = find_default_run_target (NULL);
2995 if (t && t->to_supports_disable_randomization)
2996 return (t->to_supports_disable_randomization) (t);
3001 target_supports_disable_randomization (void)
3003 struct target_ops *t;
3005 for (t = ¤t_target; t != NULL; t = t->beneath)
3006 if (t->to_supports_disable_randomization)
3007 return t->to_supports_disable_randomization (t);
3013 target_get_osdata (const char *type)
3015 struct target_ops *t;
3017 /* If we're already connected to something that can get us OS
3018 related data, use it. Otherwise, try using the native
3020 if (current_target.to_stratum >= process_stratum)
3021 t = current_target.beneath;
3023 t = find_default_run_target ("get OS data");
3028 return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type);
3031 /* Determine the current address space of thread PTID. */
3033 struct address_space *
3034 target_thread_address_space (ptid_t ptid)
3036 struct address_space *aspace;
3037 struct inferior *inf;
3038 struct target_ops *t;
3040 for (t = current_target.beneath; t != NULL; t = t->beneath)
3042 if (t->to_thread_address_space != NULL)
3044 aspace = t->to_thread_address_space (t, ptid);
3045 gdb_assert (aspace);
3048 fprintf_unfiltered (gdb_stdlog,
3049 "target_thread_address_space (%s) = %d\n",
3050 target_pid_to_str (ptid),
3051 address_space_num (aspace));
3056 /* Fall-back to the "main" address space of the inferior. */
3057 inf = find_inferior_pid (ptid_get_pid (ptid));
3059 if (inf == NULL || inf->aspace == NULL)
3060 internal_error (__FILE__, __LINE__,
3061 _("Can't determine the current "
3062 "address space of thread %s\n"),
3063 target_pid_to_str (ptid));
3069 /* Target file operations. */
3071 static struct target_ops *
3072 default_fileio_target (void)
3074 /* If we're already connected to something that can perform
3075 file I/O, use it. Otherwise, try using the native target. */
3076 if (current_target.to_stratum >= process_stratum)
3077 return current_target.beneath;
3079 return find_default_run_target ("file I/O");
3082 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3083 target file descriptor, or -1 if an error occurs (and set
3086 target_fileio_open (const char *filename, int flags, int mode,
3089 struct target_ops *t;
3091 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3093 if (t->to_fileio_open != NULL)
3095 int fd = t->to_fileio_open (t, filename, flags, mode, target_errno);
3098 fprintf_unfiltered (gdb_stdlog,
3099 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3100 filename, flags, mode,
3101 fd, fd != -1 ? 0 : *target_errno);
3106 *target_errno = FILEIO_ENOSYS;
3110 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3111 Return the number of bytes written, or -1 if an error occurs
3112 (and set *TARGET_ERRNO). */
3114 target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len,
3115 ULONGEST offset, int *target_errno)
3117 struct target_ops *t;
3119 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3121 if (t->to_fileio_pwrite != NULL)
3123 int ret = t->to_fileio_pwrite (t, fd, write_buf, len, offset,
3127 fprintf_unfiltered (gdb_stdlog,
3128 "target_fileio_pwrite (%d,...,%d,%s) "
3130 fd, len, pulongest (offset),
3131 ret, ret != -1 ? 0 : *target_errno);
3136 *target_errno = FILEIO_ENOSYS;
3140 /* Read up to LEN bytes FD on the target into READ_BUF.
3141 Return the number of bytes read, or -1 if an error occurs
3142 (and set *TARGET_ERRNO). */
3144 target_fileio_pread (int fd, gdb_byte *read_buf, int len,
3145 ULONGEST offset, int *target_errno)
3147 struct target_ops *t;
3149 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3151 if (t->to_fileio_pread != NULL)
3153 int ret = t->to_fileio_pread (t, fd, read_buf, len, offset,
3157 fprintf_unfiltered (gdb_stdlog,
3158 "target_fileio_pread (%d,...,%d,%s) "
3160 fd, len, pulongest (offset),
3161 ret, ret != -1 ? 0 : *target_errno);
3166 *target_errno = FILEIO_ENOSYS;
3170 /* Close FD on the target. Return 0, or -1 if an error occurs
3171 (and set *TARGET_ERRNO). */
3173 target_fileio_close (int fd, int *target_errno)
3175 struct target_ops *t;
3177 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3179 if (t->to_fileio_close != NULL)
3181 int ret = t->to_fileio_close (t, fd, target_errno);
3184 fprintf_unfiltered (gdb_stdlog,
3185 "target_fileio_close (%d) = %d (%d)\n",
3186 fd, ret, ret != -1 ? 0 : *target_errno);
3191 *target_errno = FILEIO_ENOSYS;
3195 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3196 occurs (and set *TARGET_ERRNO). */
3198 target_fileio_unlink (const char *filename, int *target_errno)
3200 struct target_ops *t;
3202 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3204 if (t->to_fileio_unlink != NULL)
3206 int ret = t->to_fileio_unlink (t, filename, target_errno);
3209 fprintf_unfiltered (gdb_stdlog,
3210 "target_fileio_unlink (%s) = %d (%d)\n",
3211 filename, ret, ret != -1 ? 0 : *target_errno);
3216 *target_errno = FILEIO_ENOSYS;
3220 /* Read value of symbolic link FILENAME on the target. Return a
3221 null-terminated string allocated via xmalloc, or NULL if an error
3222 occurs (and set *TARGET_ERRNO). */
3224 target_fileio_readlink (const char *filename, int *target_errno)
3226 struct target_ops *t;
3228 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3230 if (t->to_fileio_readlink != NULL)
3232 char *ret = t->to_fileio_readlink (t, filename, target_errno);
3235 fprintf_unfiltered (gdb_stdlog,
3236 "target_fileio_readlink (%s) = %s (%d)\n",
3237 filename, ret? ret : "(nil)",
3238 ret? 0 : *target_errno);
3243 *target_errno = FILEIO_ENOSYS;
3248 target_fileio_close_cleanup (void *opaque)
3250 int fd = *(int *) opaque;
3253 target_fileio_close (fd, &target_errno);
3256 /* Read target file FILENAME. Store the result in *BUF_P and
3257 return the size of the transferred data. PADDING additional bytes are
3258 available in *BUF_P. This is a helper function for
3259 target_fileio_read_alloc; see the declaration of that function for more
3263 target_fileio_read_alloc_1 (const char *filename,
3264 gdb_byte **buf_p, int padding)
3266 struct cleanup *close_cleanup;
3267 size_t buf_alloc, buf_pos;
3273 fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno);
3277 close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd);
3279 /* Start by reading up to 4K at a time. The target will throttle
3280 this number down if necessary. */
3282 buf = xmalloc (buf_alloc);
3286 n = target_fileio_pread (fd, &buf[buf_pos],
3287 buf_alloc - buf_pos - padding, buf_pos,
3291 /* An error occurred. */
3292 do_cleanups (close_cleanup);
3298 /* Read all there was. */
3299 do_cleanups (close_cleanup);
3309 /* If the buffer is filling up, expand it. */
3310 if (buf_alloc < buf_pos * 2)
3313 buf = xrealloc (buf, buf_alloc);
3320 /* Read target file FILENAME. Store the result in *BUF_P and return
3321 the size of the transferred data. See the declaration in "target.h"
3322 function for more information about the return value. */
3325 target_fileio_read_alloc (const char *filename, gdb_byte **buf_p)
3327 return target_fileio_read_alloc_1 (filename, buf_p, 0);
3330 /* Read target file FILENAME. The result is NUL-terminated and
3331 returned as a string, allocated using xmalloc. If an error occurs
3332 or the transfer is unsupported, NULL is returned. Empty objects
3333 are returned as allocated but empty strings. A warning is issued
3334 if the result contains any embedded NUL bytes. */
3337 target_fileio_read_stralloc (const char *filename)
3341 LONGEST i, transferred;
3343 transferred = target_fileio_read_alloc_1 (filename, &buffer, 1);
3344 bufstr = (char *) buffer;
3346 if (transferred < 0)
3349 if (transferred == 0)
3350 return xstrdup ("");
3352 bufstr[transferred] = 0;
3354 /* Check for embedded NUL bytes; but allow trailing NULs. */
3355 for (i = strlen (bufstr); i < transferred; i++)
3358 warning (_("target file %s "
3359 "contained unexpected null characters"),
3369 default_region_ok_for_hw_watchpoint (struct target_ops *self,
3370 CORE_ADDR addr, int len)
3372 return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT);
3376 default_watchpoint_addr_within_range (struct target_ops *target,
3378 CORE_ADDR start, int length)
3380 return addr >= start && addr < start + length;
3383 static struct gdbarch *
3384 default_thread_architecture (struct target_ops *ops, ptid_t ptid)
3386 return target_gdbarch ();
3396 * Find the next target down the stack from the specified target.
3400 find_target_beneath (struct target_ops *t)
3408 find_target_at (enum strata stratum)
3410 struct target_ops *t;
3412 for (t = current_target.beneath; t != NULL; t = t->beneath)
3413 if (t->to_stratum == stratum)
3420 /* The inferior process has died. Long live the inferior! */
3423 generic_mourn_inferior (void)
3427 ptid = inferior_ptid;
3428 inferior_ptid = null_ptid;
3430 /* Mark breakpoints uninserted in case something tries to delete a
3431 breakpoint while we delete the inferior's threads (which would
3432 fail, since the inferior is long gone). */
3433 mark_breakpoints_out ();
3435 if (!ptid_equal (ptid, null_ptid))
3437 int pid = ptid_get_pid (ptid);
3438 exit_inferior (pid);
3441 /* Note this wipes step-resume breakpoints, so needs to be done
3442 after exit_inferior, which ends up referencing the step-resume
3443 breakpoints through clear_thread_inferior_resources. */
3444 breakpoint_init_inferior (inf_exited);
3446 registers_changed ();
3448 reopen_exec_file ();
3449 reinit_frame_cache ();
3451 if (deprecated_detach_hook)
3452 deprecated_detach_hook ();
3455 /* Convert a normal process ID to a string. Returns the string in a
3459 normal_pid_to_str (ptid_t ptid)
3461 static char buf[32];
3463 xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid));
3468 default_pid_to_str (struct target_ops *ops, ptid_t ptid)
3470 return normal_pid_to_str (ptid);
3473 /* Error-catcher for target_find_memory_regions. */
3475 dummy_find_memory_regions (struct target_ops *self,
3476 find_memory_region_ftype ignore1, void *ignore2)
3478 error (_("Command not implemented for this target."));
3482 /* Error-catcher for target_make_corefile_notes. */
3484 dummy_make_corefile_notes (struct target_ops *self,
3485 bfd *ignore1, int *ignore2)
3487 error (_("Command not implemented for this target."));
3491 /* Set up the handful of non-empty slots needed by the dummy target
3495 init_dummy_target (void)
3497 dummy_target.to_shortname = "None";
3498 dummy_target.to_longname = "None";
3499 dummy_target.to_doc = "";
3500 dummy_target.to_create_inferior = find_default_create_inferior;
3501 dummy_target.to_supports_non_stop = find_default_supports_non_stop;
3502 dummy_target.to_supports_disable_randomization
3503 = find_default_supports_disable_randomization;
3504 dummy_target.to_stratum = dummy_stratum;
3505 dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero;
3506 dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero;
3507 dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero;
3508 dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero;
3509 dummy_target.to_has_execution
3510 = (int (*) (struct target_ops *, ptid_t)) return_zero;
3511 dummy_target.to_magic = OPS_MAGIC;
3513 install_dummy_methods (&dummy_target);
3517 debug_to_open (char *args, int from_tty)
3519 debug_target.to_open (args, from_tty);
3521 fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty);
3525 target_close (struct target_ops *targ)
3527 gdb_assert (!target_is_pushed (targ));
3529 if (targ->to_xclose != NULL)
3530 targ->to_xclose (targ);
3531 else if (targ->to_close != NULL)
3532 targ->to_close (targ);
3535 fprintf_unfiltered (gdb_stdlog, "target_close ()\n");
3539 target_attach (char *args, int from_tty)
3541 current_target.to_attach (¤t_target, args, from_tty);
3543 fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n",
3548 target_thread_alive (ptid_t ptid)
3552 retval = current_target.to_thread_alive (¤t_target, ptid);
3554 fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n",
3555 ptid_get_pid (ptid), retval);
3561 target_find_new_threads (void)
3563 current_target.to_find_new_threads (¤t_target);
3565 fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n");
3569 target_stop (ptid_t ptid)
3573 warning (_("May not interrupt or stop the target, ignoring attempt"));
3577 (*current_target.to_stop) (¤t_target, ptid);
3581 debug_to_post_attach (struct target_ops *self, int pid)
3583 debug_target.to_post_attach (&debug_target, pid);
3585 fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid);
3588 /* Concatenate ELEM to LIST, a comma separate list, and return the
3589 result. The LIST incoming argument is released. */
3592 str_comma_list_concat_elem (char *list, const char *elem)
3595 return xstrdup (elem);
3597 return reconcat (list, list, ", ", elem, (char *) NULL);
3600 /* Helper for target_options_to_string. If OPT is present in
3601 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3602 Returns the new resulting string. OPT is removed from
3606 do_option (int *target_options, char *ret,
3607 int opt, char *opt_str)
3609 if ((*target_options & opt) != 0)
3611 ret = str_comma_list_concat_elem (ret, opt_str);
3612 *target_options &= ~opt;
3619 target_options_to_string (int target_options)
3623 #define DO_TARG_OPTION(OPT) \
3624 ret = do_option (&target_options, ret, OPT, #OPT)
3626 DO_TARG_OPTION (TARGET_WNOHANG);
3628 if (target_options != 0)
3629 ret = str_comma_list_concat_elem (ret, "unknown???");
3637 debug_print_register (const char * func,
3638 struct regcache *regcache, int regno)
3640 struct gdbarch *gdbarch = get_regcache_arch (regcache);
3642 fprintf_unfiltered (gdb_stdlog, "%s ", func);
3643 if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)
3644 && gdbarch_register_name (gdbarch, regno) != NULL
3645 && gdbarch_register_name (gdbarch, regno)[0] != '\0')
3646 fprintf_unfiltered (gdb_stdlog, "(%s)",
3647 gdbarch_register_name (gdbarch, regno));
3649 fprintf_unfiltered (gdb_stdlog, "(%d)", regno);
3650 if (regno >= 0 && regno < gdbarch_num_regs (gdbarch))
3652 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
3653 int i, size = register_size (gdbarch, regno);
3654 gdb_byte buf[MAX_REGISTER_SIZE];
3656 regcache_raw_collect (regcache, regno, buf);
3657 fprintf_unfiltered (gdb_stdlog, " = ");
3658 for (i = 0; i < size; i++)
3660 fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]);
3662 if (size <= sizeof (LONGEST))
3664 ULONGEST val = extract_unsigned_integer (buf, size, byte_order);
3666 fprintf_unfiltered (gdb_stdlog, " %s %s",
3667 core_addr_to_string_nz (val), plongest (val));
3670 fprintf_unfiltered (gdb_stdlog, "\n");
3674 target_fetch_registers (struct regcache *regcache, int regno)
3676 current_target.to_fetch_registers (¤t_target, regcache, regno);
3678 debug_print_register ("target_fetch_registers", regcache, regno);
3682 target_store_registers (struct regcache *regcache, int regno)
3684 struct target_ops *t;
3686 if (!may_write_registers)
3687 error (_("Writing to registers is not allowed (regno %d)"), regno);
3689 current_target.to_store_registers (¤t_target, regcache, regno);
3692 debug_print_register ("target_store_registers", regcache, regno);
3697 target_core_of_thread (ptid_t ptid)
3699 int retval = current_target.to_core_of_thread (¤t_target, ptid);
3702 fprintf_unfiltered (gdb_stdlog,
3703 "target_core_of_thread (%d) = %d\n",
3704 ptid_get_pid (ptid), retval);
3709 target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size)
3711 int retval = current_target.to_verify_memory (¤t_target,
3712 data, memaddr, size);
3715 fprintf_unfiltered (gdb_stdlog,
3716 "target_verify_memory (%s, %s) = %d\n",
3717 paddress (target_gdbarch (), memaddr),
3723 /* The documentation for this function is in its prototype declaration in
3727 target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw)
3731 ret = current_target.to_insert_mask_watchpoint (¤t_target,
3735 fprintf_unfiltered (gdb_stdlog, "\
3736 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3737 core_addr_to_string (addr),
3738 core_addr_to_string (mask), rw, ret);
3743 /* The documentation for this function is in its prototype declaration in
3747 target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw)
3751 ret = current_target.to_remove_mask_watchpoint (¤t_target,
3755 fprintf_unfiltered (gdb_stdlog, "\
3756 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3757 core_addr_to_string (addr),
3758 core_addr_to_string (mask), rw, ret);
3763 /* The documentation for this function is in its prototype declaration
3767 target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask)
3769 return current_target.to_masked_watch_num_registers (¤t_target,
3773 /* The documentation for this function is in its prototype declaration
3777 target_ranged_break_num_registers (void)
3779 return current_target.to_ranged_break_num_registers (¤t_target);
3784 struct btrace_target_info *
3785 target_enable_btrace (ptid_t ptid)
3787 struct target_ops *t;
3789 for (t = current_target.beneath; t != NULL; t = t->beneath)
3790 if (t->to_enable_btrace != NULL)
3791 return t->to_enable_btrace (t, ptid);
3800 target_disable_btrace (struct btrace_target_info *btinfo)
3802 struct target_ops *t;
3804 for (t = current_target.beneath; t != NULL; t = t->beneath)
3805 if (t->to_disable_btrace != NULL)
3807 t->to_disable_btrace (t, btinfo);
3817 target_teardown_btrace (struct btrace_target_info *btinfo)
3819 struct target_ops *t;
3821 for (t = current_target.beneath; t != NULL; t = t->beneath)
3822 if (t->to_teardown_btrace != NULL)
3824 t->to_teardown_btrace (t, btinfo);
3834 target_read_btrace (VEC (btrace_block_s) **btrace,
3835 struct btrace_target_info *btinfo,
3836 enum btrace_read_type type)
3838 struct target_ops *t;
3840 for (t = current_target.beneath; t != NULL; t = t->beneath)
3841 if (t->to_read_btrace != NULL)
3842 return t->to_read_btrace (t, btrace, btinfo, type);
3845 return BTRACE_ERR_NOT_SUPPORTED;
3851 target_stop_recording (void)
3853 struct target_ops *t;
3855 for (t = current_target.beneath; t != NULL; t = t->beneath)
3856 if (t->to_stop_recording != NULL)
3858 t->to_stop_recording (t);
3862 /* This is optional. */
3868 target_info_record (void)
3870 struct target_ops *t;
3872 for (t = current_target.beneath; t != NULL; t = t->beneath)
3873 if (t->to_info_record != NULL)
3875 t->to_info_record (t);
3885 target_save_record (const char *filename)
3887 current_target.to_save_record (¤t_target, filename);
3893 target_supports_delete_record (void)
3895 struct target_ops *t;
3897 for (t = current_target.beneath; t != NULL; t = t->beneath)
3898 if (t->to_delete_record != NULL)
3907 target_delete_record (void)
3909 current_target.to_delete_record (¤t_target);
3915 target_record_is_replaying (void)
3917 return current_target.to_record_is_replaying (¤t_target);
3923 target_goto_record_begin (void)
3925 current_target.to_goto_record_begin (¤t_target);
3931 target_goto_record_end (void)
3933 current_target.to_goto_record_end (¤t_target);
3939 target_goto_record (ULONGEST insn)
3941 current_target.to_goto_record (¤t_target, insn);
3947 target_insn_history (int size, int flags)
3949 current_target.to_insn_history (¤t_target, size, flags);
3955 target_insn_history_from (ULONGEST from, int size, int flags)
3957 current_target.to_insn_history_from (¤t_target, from, size, flags);
3963 target_insn_history_range (ULONGEST begin, ULONGEST end, int flags)
3965 current_target.to_insn_history_range (¤t_target, begin, end, flags);
3971 target_call_history (int size, int flags)
3973 current_target.to_call_history (¤t_target, size, flags);
3979 target_call_history_from (ULONGEST begin, int size, int flags)
3981 current_target.to_call_history_from (¤t_target, begin, size, flags);
3987 target_call_history_range (ULONGEST begin, ULONGEST end, int flags)
3989 current_target.to_call_history_range (¤t_target, begin, end, flags);
3993 debug_to_prepare_to_store (struct target_ops *self, struct regcache *regcache)
3995 debug_target.to_prepare_to_store (&debug_target, regcache);
3997 fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n");
4002 const struct frame_unwind *
4003 target_get_unwinder (void)
4005 struct target_ops *t;
4007 for (t = current_target.beneath; t != NULL; t = t->beneath)
4008 if (t->to_get_unwinder != NULL)
4009 return t->to_get_unwinder;
4016 const struct frame_unwind *
4017 target_get_tailcall_unwinder (void)
4019 struct target_ops *t;
4021 for (t = current_target.beneath; t != NULL; t = t->beneath)
4022 if (t->to_get_tailcall_unwinder != NULL)
4023 return t->to_get_tailcall_unwinder;
4031 forward_target_decr_pc_after_break (struct target_ops *ops,
4032 struct gdbarch *gdbarch)
4034 for (; ops != NULL; ops = ops->beneath)
4035 if (ops->to_decr_pc_after_break != NULL)
4036 return ops->to_decr_pc_after_break (ops, gdbarch);
4038 return gdbarch_decr_pc_after_break (gdbarch);
4044 target_decr_pc_after_break (struct gdbarch *gdbarch)
4046 return forward_target_decr_pc_after_break (current_target.beneath, gdbarch);
4050 deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len,
4051 int write, struct mem_attrib *attrib,
4052 struct target_ops *target)
4056 retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write,
4059 fprintf_unfiltered (gdb_stdlog,
4060 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4061 paddress (target_gdbarch (), memaddr), len,
4062 write ? "write" : "read", retval);
4068 fputs_unfiltered (", bytes =", gdb_stdlog);
4069 for (i = 0; i < retval; i++)
4071 if ((((intptr_t) &(myaddr[i])) & 0xf) == 0)
4073 if (targetdebug < 2 && i > 0)
4075 fprintf_unfiltered (gdb_stdlog, " ...");
4078 fprintf_unfiltered (gdb_stdlog, "\n");
4081 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
4085 fputc_unfiltered ('\n', gdb_stdlog);
4091 debug_to_files_info (struct target_ops *target)
4093 debug_target.to_files_info (target);
4095 fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n");
4099 debug_to_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch,
4100 struct bp_target_info *bp_tgt)
4104 retval = debug_target.to_insert_breakpoint (&debug_target, gdbarch, bp_tgt);
4106 fprintf_unfiltered (gdb_stdlog,
4107 "target_insert_breakpoint (%s, xxx) = %ld\n",
4108 core_addr_to_string (bp_tgt->placed_address),
4109 (unsigned long) retval);
4114 debug_to_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch,
4115 struct bp_target_info *bp_tgt)
4119 retval = debug_target.to_remove_breakpoint (&debug_target, gdbarch, bp_tgt);
4121 fprintf_unfiltered (gdb_stdlog,
4122 "target_remove_breakpoint (%s, xxx) = %ld\n",
4123 core_addr_to_string (bp_tgt->placed_address),
4124 (unsigned long) retval);
4129 debug_to_can_use_hw_breakpoint (struct target_ops *self,
4130 int type, int cnt, int from_tty)
4134 retval = debug_target.to_can_use_hw_breakpoint (&debug_target,
4135 type, cnt, from_tty);
4137 fprintf_unfiltered (gdb_stdlog,
4138 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4139 (unsigned long) type,
4140 (unsigned long) cnt,
4141 (unsigned long) from_tty,
4142 (unsigned long) retval);
4147 debug_to_region_ok_for_hw_watchpoint (struct target_ops *self,
4148 CORE_ADDR addr, int len)
4152 retval = debug_target.to_region_ok_for_hw_watchpoint (&debug_target,
4155 fprintf_unfiltered (gdb_stdlog,
4156 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4157 core_addr_to_string (addr), (unsigned long) len,
4158 core_addr_to_string (retval));
4163 debug_to_can_accel_watchpoint_condition (struct target_ops *self,
4164 CORE_ADDR addr, int len, int rw,
4165 struct expression *cond)
4169 retval = debug_target.to_can_accel_watchpoint_condition (&debug_target,
4173 fprintf_unfiltered (gdb_stdlog,
4174 "target_can_accel_watchpoint_condition "
4175 "(%s, %d, %d, %s) = %ld\n",
4176 core_addr_to_string (addr), len, rw,
4177 host_address_to_string (cond), (unsigned long) retval);
4182 debug_to_stopped_by_watchpoint (struct target_ops *ops)
4186 retval = debug_target.to_stopped_by_watchpoint (&debug_target);
4188 fprintf_unfiltered (gdb_stdlog,
4189 "target_stopped_by_watchpoint () = %ld\n",
4190 (unsigned long) retval);
4195 debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr)
4199 retval = debug_target.to_stopped_data_address (target, addr);
4201 fprintf_unfiltered (gdb_stdlog,
4202 "target_stopped_data_address ([%s]) = %ld\n",
4203 core_addr_to_string (*addr),
4204 (unsigned long)retval);
4209 debug_to_watchpoint_addr_within_range (struct target_ops *target,
4211 CORE_ADDR start, int length)
4215 retval = debug_target.to_watchpoint_addr_within_range (target, addr,
4218 fprintf_filtered (gdb_stdlog,
4219 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4220 core_addr_to_string (addr), core_addr_to_string (start),
4226 debug_to_insert_hw_breakpoint (struct target_ops *self,
4227 struct gdbarch *gdbarch,
4228 struct bp_target_info *bp_tgt)
4232 retval = debug_target.to_insert_hw_breakpoint (&debug_target,
4235 fprintf_unfiltered (gdb_stdlog,
4236 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4237 core_addr_to_string (bp_tgt->placed_address),
4238 (unsigned long) retval);
4243 debug_to_remove_hw_breakpoint (struct target_ops *self,
4244 struct gdbarch *gdbarch,
4245 struct bp_target_info *bp_tgt)
4249 retval = debug_target.to_remove_hw_breakpoint (&debug_target,
4252 fprintf_unfiltered (gdb_stdlog,
4253 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4254 core_addr_to_string (bp_tgt->placed_address),
4255 (unsigned long) retval);
4260 debug_to_insert_watchpoint (struct target_ops *self,
4261 CORE_ADDR addr, int len, int type,
4262 struct expression *cond)
4266 retval = debug_target.to_insert_watchpoint (&debug_target,
4267 addr, len, type, cond);
4269 fprintf_unfiltered (gdb_stdlog,
4270 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4271 core_addr_to_string (addr), len, type,
4272 host_address_to_string (cond), (unsigned long) retval);
4277 debug_to_remove_watchpoint (struct target_ops *self,
4278 CORE_ADDR addr, int len, int type,
4279 struct expression *cond)
4283 retval = debug_target.to_remove_watchpoint (&debug_target,
4284 addr, len, type, cond);
4286 fprintf_unfiltered (gdb_stdlog,
4287 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4288 core_addr_to_string (addr), len, type,
4289 host_address_to_string (cond), (unsigned long) retval);
4294 debug_to_terminal_init (struct target_ops *self)
4296 debug_target.to_terminal_init (&debug_target);
4298 fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n");
4302 debug_to_terminal_inferior (struct target_ops *self)
4304 debug_target.to_terminal_inferior (&debug_target);
4306 fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n");
4310 debug_to_terminal_ours_for_output (struct target_ops *self)
4312 debug_target.to_terminal_ours_for_output (&debug_target);
4314 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n");
4318 debug_to_terminal_ours (struct target_ops *self)
4320 debug_target.to_terminal_ours (&debug_target);
4322 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n");
4326 debug_to_terminal_save_ours (struct target_ops *self)
4328 debug_target.to_terminal_save_ours (&debug_target);
4330 fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n");
4334 debug_to_terminal_info (struct target_ops *self,
4335 const char *arg, int from_tty)
4337 debug_target.to_terminal_info (&debug_target, arg, from_tty);
4339 fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg,
4344 debug_to_load (struct target_ops *self, char *args, int from_tty)
4346 debug_target.to_load (&debug_target, args, from_tty);
4348 fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty);
4352 debug_to_post_startup_inferior (struct target_ops *self, ptid_t ptid)
4354 debug_target.to_post_startup_inferior (&debug_target, ptid);
4356 fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n",
4357 ptid_get_pid (ptid));
4361 debug_to_insert_fork_catchpoint (struct target_ops *self, int pid)
4365 retval = debug_target.to_insert_fork_catchpoint (&debug_target, pid);
4367 fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n",
4374 debug_to_remove_fork_catchpoint (struct target_ops *self, int pid)
4378 retval = debug_target.to_remove_fork_catchpoint (&debug_target, pid);
4380 fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n",
4387 debug_to_insert_vfork_catchpoint (struct target_ops *self, int pid)
4391 retval = debug_target.to_insert_vfork_catchpoint (&debug_target, pid);
4393 fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n",
4400 debug_to_remove_vfork_catchpoint (struct target_ops *self, int pid)
4404 retval = debug_target.to_remove_vfork_catchpoint (&debug_target, pid);
4406 fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n",
4413 debug_to_insert_exec_catchpoint (struct target_ops *self, int pid)
4417 retval = debug_target.to_insert_exec_catchpoint (&debug_target, pid);
4419 fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n",
4426 debug_to_remove_exec_catchpoint (struct target_ops *self, int pid)
4430 retval = debug_target.to_remove_exec_catchpoint (&debug_target, pid);
4432 fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n",
4439 debug_to_has_exited (struct target_ops *self,
4440 int pid, int wait_status, int *exit_status)
4444 has_exited = debug_target.to_has_exited (&debug_target,
4445 pid, wait_status, exit_status);
4447 fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n",
4448 pid, wait_status, *exit_status, has_exited);
4454 debug_to_can_run (struct target_ops *self)
4458 retval = debug_target.to_can_run (&debug_target);
4460 fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval);
4465 static struct gdbarch *
4466 debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid)
4468 struct gdbarch *retval;
4470 retval = debug_target.to_thread_architecture (ops, ptid);
4472 fprintf_unfiltered (gdb_stdlog,
4473 "target_thread_architecture (%s) = %s [%s]\n",
4474 target_pid_to_str (ptid),
4475 host_address_to_string (retval),
4476 gdbarch_bfd_arch_info (retval)->printable_name);
4481 debug_to_stop (struct target_ops *self, ptid_t ptid)
4483 debug_target.to_stop (&debug_target, ptid);
4485 fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n",
4486 target_pid_to_str (ptid));
4490 debug_to_rcmd (struct target_ops *self, char *command,
4491 struct ui_file *outbuf)
4493 debug_target.to_rcmd (&debug_target, command, outbuf);
4494 fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command);
4498 debug_to_pid_to_exec_file (struct target_ops *self, int pid)
4502 exec_file = debug_target.to_pid_to_exec_file (&debug_target, pid);
4504 fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n",
4511 setup_target_debug (void)
4513 memcpy (&debug_target, ¤t_target, sizeof debug_target);
4515 current_target.to_open = debug_to_open;
4516 current_target.to_post_attach = debug_to_post_attach;
4517 current_target.to_prepare_to_store = debug_to_prepare_to_store;
4518 current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory;
4519 current_target.to_files_info = debug_to_files_info;
4520 current_target.to_insert_breakpoint = debug_to_insert_breakpoint;
4521 current_target.to_remove_breakpoint = debug_to_remove_breakpoint;
4522 current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint;
4523 current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint;
4524 current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint;
4525 current_target.to_insert_watchpoint = debug_to_insert_watchpoint;
4526 current_target.to_remove_watchpoint = debug_to_remove_watchpoint;
4527 current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint;
4528 current_target.to_stopped_data_address = debug_to_stopped_data_address;
4529 current_target.to_watchpoint_addr_within_range
4530 = debug_to_watchpoint_addr_within_range;
4531 current_target.to_region_ok_for_hw_watchpoint
4532 = debug_to_region_ok_for_hw_watchpoint;
4533 current_target.to_can_accel_watchpoint_condition
4534 = debug_to_can_accel_watchpoint_condition;
4535 current_target.to_terminal_init = debug_to_terminal_init;
4536 current_target.to_terminal_inferior = debug_to_terminal_inferior;
4537 current_target.to_terminal_ours_for_output
4538 = debug_to_terminal_ours_for_output;
4539 current_target.to_terminal_ours = debug_to_terminal_ours;
4540 current_target.to_terminal_save_ours = debug_to_terminal_save_ours;
4541 current_target.to_terminal_info = debug_to_terminal_info;
4542 current_target.to_load = debug_to_load;
4543 current_target.to_post_startup_inferior = debug_to_post_startup_inferior;
4544 current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint;
4545 current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint;
4546 current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint;
4547 current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint;
4548 current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint;
4549 current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint;
4550 current_target.to_has_exited = debug_to_has_exited;
4551 current_target.to_can_run = debug_to_can_run;
4552 current_target.to_stop = debug_to_stop;
4553 current_target.to_rcmd = debug_to_rcmd;
4554 current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file;
4555 current_target.to_thread_architecture = debug_to_thread_architecture;
4559 static char targ_desc[] =
4560 "Names of targets and files being debugged.\nShows the entire \
4561 stack of targets currently in use (including the exec-file,\n\
4562 core-file, and process, if any), as well as the symbol file name.";
4565 default_rcmd (struct target_ops *self, char *command, struct ui_file *output)
4567 error (_("\"monitor\" command not supported by this target."));
4571 do_monitor_command (char *cmd,
4574 target_rcmd (cmd, gdb_stdtarg);
4577 /* Print the name of each layers of our target stack. */
4580 maintenance_print_target_stack (char *cmd, int from_tty)
4582 struct target_ops *t;
4584 printf_filtered (_("The current target stack is:\n"));
4586 for (t = target_stack; t != NULL; t = t->beneath)
4588 printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname);
4592 /* Controls if async mode is permitted. */
4593 int target_async_permitted = 0;
4595 /* The set command writes to this variable. If the inferior is
4596 executing, target_async_permitted is *not* updated. */
4597 static int target_async_permitted_1 = 0;
4600 set_target_async_command (char *args, int from_tty,
4601 struct cmd_list_element *c)
4603 if (have_live_inferiors ())
4605 target_async_permitted_1 = target_async_permitted;
4606 error (_("Cannot change this setting while the inferior is running."));
4609 target_async_permitted = target_async_permitted_1;
4613 show_target_async_command (struct ui_file *file, int from_tty,
4614 struct cmd_list_element *c,
4617 fprintf_filtered (file,
4618 _("Controlling the inferior in "
4619 "asynchronous mode is %s.\n"), value);
4622 /* Temporary copies of permission settings. */
4624 static int may_write_registers_1 = 1;
4625 static int may_write_memory_1 = 1;
4626 static int may_insert_breakpoints_1 = 1;
4627 static int may_insert_tracepoints_1 = 1;
4628 static int may_insert_fast_tracepoints_1 = 1;
4629 static int may_stop_1 = 1;
4631 /* Make the user-set values match the real values again. */
4634 update_target_permissions (void)
4636 may_write_registers_1 = may_write_registers;
4637 may_write_memory_1 = may_write_memory;
4638 may_insert_breakpoints_1 = may_insert_breakpoints;
4639 may_insert_tracepoints_1 = may_insert_tracepoints;
4640 may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints;
4641 may_stop_1 = may_stop;
4644 /* The one function handles (most of) the permission flags in the same
4648 set_target_permissions (char *args, int from_tty,
4649 struct cmd_list_element *c)
4651 if (target_has_execution)
4653 update_target_permissions ();
4654 error (_("Cannot change this setting while the inferior is running."));
4657 /* Make the real values match the user-changed values. */
4658 may_write_registers = may_write_registers_1;
4659 may_insert_breakpoints = may_insert_breakpoints_1;
4660 may_insert_tracepoints = may_insert_tracepoints_1;
4661 may_insert_fast_tracepoints = may_insert_fast_tracepoints_1;
4662 may_stop = may_stop_1;
4663 update_observer_mode ();
4666 /* Set memory write permission independently of observer mode. */
4669 set_write_memory_permission (char *args, int from_tty,
4670 struct cmd_list_element *c)
4672 /* Make the real values match the user-changed values. */
4673 may_write_memory = may_write_memory_1;
4674 update_observer_mode ();
4679 initialize_targets (void)
4681 init_dummy_target ();
4682 push_target (&dummy_target);
4684 add_info ("target", target_info, targ_desc);
4685 add_info ("files", target_info, targ_desc);
4687 add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\
4688 Set target debugging."), _("\
4689 Show target debugging."), _("\
4690 When non-zero, target debugging is enabled. Higher numbers are more\n\
4691 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4695 &setdebuglist, &showdebuglist);
4697 add_setshow_boolean_cmd ("trust-readonly-sections", class_support,
4698 &trust_readonly, _("\
4699 Set mode for reading from readonly sections."), _("\
4700 Show mode for reading from readonly sections."), _("\
4701 When this mode is on, memory reads from readonly sections (such as .text)\n\
4702 will be read from the object file instead of from the target. This will\n\
4703 result in significant performance improvement for remote targets."),
4705 show_trust_readonly,
4706 &setlist, &showlist);
4708 add_com ("monitor", class_obscure, do_monitor_command,
4709 _("Send a command to the remote monitor (remote targets only)."));
4711 add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack,
4712 _("Print the name of each layer of the internal target stack."),
4713 &maintenanceprintlist);
4715 add_setshow_boolean_cmd ("target-async", no_class,
4716 &target_async_permitted_1, _("\
4717 Set whether gdb controls the inferior in asynchronous mode."), _("\
4718 Show whether gdb controls the inferior in asynchronous mode."), _("\
4719 Tells gdb whether to control the inferior in asynchronous mode."),
4720 set_target_async_command,
4721 show_target_async_command,
4725 add_setshow_boolean_cmd ("may-write-registers", class_support,
4726 &may_write_registers_1, _("\
4727 Set permission to write into registers."), _("\
4728 Show permission to write into registers."), _("\
4729 When this permission is on, GDB may write into the target's registers.\n\
4730 Otherwise, any sort of write attempt will result in an error."),
4731 set_target_permissions, NULL,
4732 &setlist, &showlist);
4734 add_setshow_boolean_cmd ("may-write-memory", class_support,
4735 &may_write_memory_1, _("\
4736 Set permission to write into target memory."), _("\
4737 Show permission to write into target memory."), _("\
4738 When this permission is on, GDB may write into the target's memory.\n\
4739 Otherwise, any sort of write attempt will result in an error."),
4740 set_write_memory_permission, NULL,
4741 &setlist, &showlist);
4743 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support,
4744 &may_insert_breakpoints_1, _("\
4745 Set permission to insert breakpoints in the target."), _("\
4746 Show permission to insert breakpoints in the target."), _("\
4747 When this permission is on, GDB may insert breakpoints in the program.\n\
4748 Otherwise, any sort of insertion attempt will result in an error."),
4749 set_target_permissions, NULL,
4750 &setlist, &showlist);
4752 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support,
4753 &may_insert_tracepoints_1, _("\
4754 Set permission to insert tracepoints in the target."), _("\
4755 Show permission to insert tracepoints in the target."), _("\
4756 When this permission is on, GDB may insert tracepoints in the program.\n\
4757 Otherwise, any sort of insertion attempt will result in an error."),
4758 set_target_permissions, NULL,
4759 &setlist, &showlist);
4761 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support,
4762 &may_insert_fast_tracepoints_1, _("\
4763 Set permission to insert fast tracepoints in the target."), _("\
4764 Show permission to insert fast tracepoints in the target."), _("\
4765 When this permission is on, GDB may insert fast tracepoints.\n\
4766 Otherwise, any sort of insertion attempt will result in an error."),
4767 set_target_permissions, NULL,
4768 &setlist, &showlist);
4770 add_setshow_boolean_cmd ("may-interrupt", class_support,
4772 Set permission to interrupt or signal the target."), _("\
4773 Show permission to interrupt or signal the target."), _("\
4774 When this permission is on, GDB may interrupt/stop the target's execution.\n\
4775 Otherwise, any attempt to interrupt or stop will be ignored."),
4776 set_target_permissions, NULL,
4777 &setlist, &showlist);