1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2014 Free Software Foundation, Inc.
5 Contributed by Cygnus Support.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "target-dcache.h"
36 #include "gdb_assert.h"
38 #include "exceptions.h"
39 #include "target-descriptions.h"
40 #include "gdbthread.h"
43 #include "inline-frame.h"
44 #include "tracepoint.h"
45 #include "gdb/fileio.h"
48 static void target_info (char *, int);
50 static void default_terminal_info (struct target_ops *, const char *, int);
52 static int default_watchpoint_addr_within_range (struct target_ops *,
53 CORE_ADDR, CORE_ADDR, int);
55 static int default_region_ok_for_hw_watchpoint (struct target_ops *,
58 static void default_rcmd (struct target_ops *, char *, struct ui_file *);
60 static void tcomplain (void) ATTRIBUTE_NORETURN;
62 static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *);
64 static int return_zero (void);
66 static int return_minus_one (void);
68 static void *return_null (void);
70 void target_ignore (void);
72 static void target_command (char *, int);
74 static struct target_ops *find_default_run_target (char *);
76 static target_xfer_partial_ftype default_xfer_partial;
78 static struct gdbarch *default_thread_architecture (struct target_ops *ops,
81 static int dummy_find_memory_regions (struct target_ops *self,
82 find_memory_region_ftype ignore1,
85 static char *dummy_make_corefile_notes (struct target_ops *self,
86 bfd *ignore1, int *ignore2);
88 static int find_default_can_async_p (struct target_ops *ignore);
90 static int find_default_is_async_p (struct target_ops *ignore);
92 static enum exec_direction_kind default_execution_direction
93 (struct target_ops *self);
95 #include "target-delegates.c"
97 static void init_dummy_target (void);
99 static struct target_ops debug_target;
101 static void debug_to_open (char *, int);
103 static void debug_to_prepare_to_store (struct target_ops *self,
106 static void debug_to_files_info (struct target_ops *);
108 static int debug_to_insert_breakpoint (struct target_ops *, struct gdbarch *,
109 struct bp_target_info *);
111 static int debug_to_remove_breakpoint (struct target_ops *, struct gdbarch *,
112 struct bp_target_info *);
114 static int debug_to_can_use_hw_breakpoint (struct target_ops *self,
117 static int debug_to_insert_hw_breakpoint (struct target_ops *self,
119 struct bp_target_info *);
121 static int debug_to_remove_hw_breakpoint (struct target_ops *self,
123 struct bp_target_info *);
125 static int debug_to_insert_watchpoint (struct target_ops *self,
127 struct expression *);
129 static int debug_to_remove_watchpoint (struct target_ops *self,
131 struct expression *);
133 static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *);
135 static int debug_to_watchpoint_addr_within_range (struct target_ops *,
136 CORE_ADDR, CORE_ADDR, int);
138 static int debug_to_region_ok_for_hw_watchpoint (struct target_ops *self,
141 static int debug_to_can_accel_watchpoint_condition (struct target_ops *self,
143 struct expression *);
145 static void debug_to_terminal_init (struct target_ops *self);
147 static void debug_to_terminal_inferior (struct target_ops *self);
149 static void debug_to_terminal_ours_for_output (struct target_ops *self);
151 static void debug_to_terminal_save_ours (struct target_ops *self);
153 static void debug_to_terminal_ours (struct target_ops *self);
155 static void debug_to_load (struct target_ops *self, char *, int);
157 static int debug_to_can_run (struct target_ops *self);
159 static void debug_to_stop (struct target_ops *self, ptid_t);
161 /* Pointer to array of target architecture structures; the size of the
162 array; the current index into the array; the allocated size of the
164 struct target_ops **target_structs;
165 unsigned target_struct_size;
166 unsigned target_struct_allocsize;
167 #define DEFAULT_ALLOCSIZE 10
169 /* The initial current target, so that there is always a semi-valid
172 static struct target_ops dummy_target;
174 /* Top of target stack. */
176 static struct target_ops *target_stack;
178 /* The target structure we are currently using to talk to a process
179 or file or whatever "inferior" we have. */
181 struct target_ops current_target;
183 /* Command list for target. */
185 static struct cmd_list_element *targetlist = NULL;
187 /* Nonzero if we should trust readonly sections from the
188 executable when reading memory. */
190 static int trust_readonly = 0;
192 /* Nonzero if we should show true memory content including
193 memory breakpoint inserted by gdb. */
195 static int show_memory_breakpoints = 0;
197 /* These globals control whether GDB attempts to perform these
198 operations; they are useful for targets that need to prevent
199 inadvertant disruption, such as in non-stop mode. */
201 int may_write_registers = 1;
203 int may_write_memory = 1;
205 int may_insert_breakpoints = 1;
207 int may_insert_tracepoints = 1;
209 int may_insert_fast_tracepoints = 1;
213 /* Non-zero if we want to see trace of target level stuff. */
215 static unsigned int targetdebug = 0;
217 show_targetdebug (struct ui_file *file, int from_tty,
218 struct cmd_list_element *c, const char *value)
220 fprintf_filtered (file, _("Target debugging is %s.\n"), value);
223 static void setup_target_debug (void);
225 /* The user just typed 'target' without the name of a target. */
228 target_command (char *arg, int from_tty)
230 fputs_filtered ("Argument required (target name). Try `help target'\n",
234 /* Default target_has_* methods for process_stratum targets. */
237 default_child_has_all_memory (struct target_ops *ops)
239 /* If no inferior selected, then we can't read memory here. */
240 if (ptid_equal (inferior_ptid, null_ptid))
247 default_child_has_memory (struct target_ops *ops)
249 /* If no inferior selected, then we can't read memory here. */
250 if (ptid_equal (inferior_ptid, null_ptid))
257 default_child_has_stack (struct target_ops *ops)
259 /* If no inferior selected, there's no stack. */
260 if (ptid_equal (inferior_ptid, null_ptid))
267 default_child_has_registers (struct target_ops *ops)
269 /* Can't read registers from no inferior. */
270 if (ptid_equal (inferior_ptid, null_ptid))
277 default_child_has_execution (struct target_ops *ops, ptid_t the_ptid)
279 /* If there's no thread selected, then we can't make it run through
281 if (ptid_equal (the_ptid, null_ptid))
289 target_has_all_memory_1 (void)
291 struct target_ops *t;
293 for (t = current_target.beneath; t != NULL; t = t->beneath)
294 if (t->to_has_all_memory (t))
301 target_has_memory_1 (void)
303 struct target_ops *t;
305 for (t = current_target.beneath; t != NULL; t = t->beneath)
306 if (t->to_has_memory (t))
313 target_has_stack_1 (void)
315 struct target_ops *t;
317 for (t = current_target.beneath; t != NULL; t = t->beneath)
318 if (t->to_has_stack (t))
325 target_has_registers_1 (void)
327 struct target_ops *t;
329 for (t = current_target.beneath; t != NULL; t = t->beneath)
330 if (t->to_has_registers (t))
337 target_has_execution_1 (ptid_t the_ptid)
339 struct target_ops *t;
341 for (t = current_target.beneath; t != NULL; t = t->beneath)
342 if (t->to_has_execution (t, the_ptid))
349 target_has_execution_current (void)
351 return target_has_execution_1 (inferior_ptid);
354 /* Complete initialization of T. This ensures that various fields in
355 T are set, if needed by the target implementation. */
358 complete_target_initialization (struct target_ops *t)
360 /* Provide default values for all "must have" methods. */
361 if (t->to_xfer_partial == NULL)
362 t->to_xfer_partial = default_xfer_partial;
364 if (t->to_has_all_memory == NULL)
365 t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero;
367 if (t->to_has_memory == NULL)
368 t->to_has_memory = (int (*) (struct target_ops *)) return_zero;
370 if (t->to_has_stack == NULL)
371 t->to_has_stack = (int (*) (struct target_ops *)) return_zero;
373 if (t->to_has_registers == NULL)
374 t->to_has_registers = (int (*) (struct target_ops *)) return_zero;
376 if (t->to_has_execution == NULL)
377 t->to_has_execution = (int (*) (struct target_ops *, ptid_t)) return_zero;
379 install_delegators (t);
382 /* Add possible target architecture T to the list and add a new
383 command 'target T->to_shortname'. Set COMPLETER as the command's
384 completer if not NULL. */
387 add_target_with_completer (struct target_ops *t,
388 completer_ftype *completer)
390 struct cmd_list_element *c;
392 complete_target_initialization (t);
396 target_struct_allocsize = DEFAULT_ALLOCSIZE;
397 target_structs = (struct target_ops **) xmalloc
398 (target_struct_allocsize * sizeof (*target_structs));
400 if (target_struct_size >= target_struct_allocsize)
402 target_struct_allocsize *= 2;
403 target_structs = (struct target_ops **)
404 xrealloc ((char *) target_structs,
405 target_struct_allocsize * sizeof (*target_structs));
407 target_structs[target_struct_size++] = t;
409 if (targetlist == NULL)
410 add_prefix_cmd ("target", class_run, target_command, _("\
411 Connect to a target machine or process.\n\
412 The first argument is the type or protocol of the target machine.\n\
413 Remaining arguments are interpreted by the target protocol. For more\n\
414 information on the arguments for a particular protocol, type\n\
415 `help target ' followed by the protocol name."),
416 &targetlist, "target ", 0, &cmdlist);
417 c = add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc,
419 if (completer != NULL)
420 set_cmd_completer (c, completer);
423 /* Add a possible target architecture to the list. */
426 add_target (struct target_ops *t)
428 add_target_with_completer (t, NULL);
434 add_deprecated_target_alias (struct target_ops *t, char *alias)
436 struct cmd_list_element *c;
439 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
441 c = add_cmd (alias, no_class, t->to_open, t->to_doc, &targetlist);
442 alt = xstrprintf ("target %s", t->to_shortname);
443 deprecate_cmd (c, alt);
456 struct target_ops *t;
458 for (t = current_target.beneath; t != NULL; t = t->beneath)
459 if (t->to_kill != NULL)
462 fprintf_unfiltered (gdb_stdlog, "target_kill ()\n");
472 target_load (char *arg, int from_tty)
474 target_dcache_invalidate ();
475 (*current_target.to_load) (¤t_target, arg, from_tty);
479 target_create_inferior (char *exec_file, char *args,
480 char **env, int from_tty)
482 struct target_ops *t;
484 for (t = current_target.beneath; t != NULL; t = t->beneath)
486 if (t->to_create_inferior != NULL)
488 t->to_create_inferior (t, exec_file, args, env, from_tty);
490 fprintf_unfiltered (gdb_stdlog,
491 "target_create_inferior (%s, %s, xxx, %d)\n",
492 exec_file, args, from_tty);
497 internal_error (__FILE__, __LINE__,
498 _("could not find a target to create inferior"));
502 target_terminal_inferior (void)
504 /* A background resume (``run&'') should leave GDB in control of the
505 terminal. Use target_can_async_p, not target_is_async_p, since at
506 this point the target is not async yet. However, if sync_execution
507 is not set, we know it will become async prior to resume. */
508 if (target_can_async_p () && !sync_execution)
511 /* If GDB is resuming the inferior in the foreground, install
512 inferior's terminal modes. */
513 (*current_target.to_terminal_inferior) (¤t_target);
517 nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write,
518 struct target_ops *t)
520 errno = EIO; /* Can't read/write this location. */
521 return 0; /* No bytes handled. */
527 error (_("You can't do that when your target is `%s'"),
528 current_target.to_shortname);
534 error (_("You can't do that without a process to debug."));
538 default_terminal_info (struct target_ops *self, const char *args, int from_tty)
540 printf_unfiltered (_("No saved terminal information.\n"));
543 /* A default implementation for the to_get_ada_task_ptid target method.
545 This function builds the PTID by using both LWP and TID as part of
546 the PTID lwp and tid elements. The pid used is the pid of the
550 default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid)
552 return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid);
555 static enum exec_direction_kind
556 default_execution_direction (struct target_ops *self)
558 if (!target_can_execute_reverse)
560 else if (!target_can_async_p ())
563 gdb_assert_not_reached ("\
564 to_execution_direction must be implemented for reverse async");
567 /* Go through the target stack from top to bottom, copying over zero
568 entries in current_target, then filling in still empty entries. In
569 effect, we are doing class inheritance through the pushed target
572 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
573 is currently implemented, is that it discards any knowledge of
574 which target an inherited method originally belonged to.
575 Consequently, new new target methods should instead explicitly and
576 locally search the target stack for the target that can handle the
580 update_current_target (void)
582 struct target_ops *t;
584 /* First, reset current's contents. */
585 memset (¤t_target, 0, sizeof (current_target));
587 /* Install the delegators. */
588 install_delegators (¤t_target);
590 #define INHERIT(FIELD, TARGET) \
591 if (!current_target.FIELD) \
592 current_target.FIELD = (TARGET)->FIELD
594 for (t = target_stack; t; t = t->beneath)
596 INHERIT (to_shortname, t);
597 INHERIT (to_longname, t);
599 /* Do not inherit to_open. */
600 /* Do not inherit to_close. */
601 /* Do not inherit to_attach. */
602 /* Do not inherit to_post_attach. */
603 INHERIT (to_attach_no_wait, t);
604 /* Do not inherit to_detach. */
605 /* Do not inherit to_disconnect. */
606 /* Do not inherit to_resume. */
607 /* Do not inherit to_wait. */
608 /* Do not inherit to_fetch_registers. */
609 /* Do not inherit to_store_registers. */
610 /* Do not inherit to_prepare_to_store. */
611 INHERIT (deprecated_xfer_memory, t);
612 /* Do not inherit to_files_info. */
613 /* Do not inherit to_insert_breakpoint. */
614 /* Do not inherit to_remove_breakpoint. */
615 /* Do not inherit to_can_use_hw_breakpoint. */
616 /* Do not inherit to_insert_hw_breakpoint. */
617 /* Do not inherit to_remove_hw_breakpoint. */
618 /* Do not inherit to_ranged_break_num_registers. */
619 /* Do not inherit to_insert_watchpoint. */
620 /* Do not inherit to_remove_watchpoint. */
621 /* Do not inherit to_insert_mask_watchpoint. */
622 /* Do not inherit to_remove_mask_watchpoint. */
623 /* Do not inherit to_stopped_data_address. */
624 INHERIT (to_have_steppable_watchpoint, t);
625 INHERIT (to_have_continuable_watchpoint, t);
626 /* Do not inherit to_stopped_by_watchpoint. */
627 /* Do not inherit to_watchpoint_addr_within_range. */
628 /* Do not inherit to_region_ok_for_hw_watchpoint. */
629 /* Do not inherit to_can_accel_watchpoint_condition. */
630 /* Do not inherit to_masked_watch_num_registers. */
631 /* Do not inherit to_terminal_init. */
632 /* Do not inherit to_terminal_inferior. */
633 /* Do not inherit to_terminal_ours_for_output. */
634 /* Do not inherit to_terminal_ours. */
635 /* Do not inherit to_terminal_save_ours. */
636 /* Do not inherit to_terminal_info. */
637 /* Do not inherit to_kill. */
638 /* Do not inherit to_load. */
639 /* Do no inherit to_create_inferior. */
640 /* Do not inherit to_post_startup_inferior. */
641 /* Do not inherit to_insert_fork_catchpoint. */
642 /* Do not inherit to_remove_fork_catchpoint. */
643 /* Do not inherit to_insert_vfork_catchpoint. */
644 /* Do not inherit to_remove_vfork_catchpoint. */
645 /* Do not inherit to_follow_fork. */
646 /* Do not inherit to_insert_exec_catchpoint. */
647 /* Do not inherit to_remove_exec_catchpoint. */
648 /* Do not inherit to_set_syscall_catchpoint. */
649 /* Do not inherit to_has_exited. */
650 /* Do not inherit to_mourn_inferior. */
651 INHERIT (to_can_run, t);
652 /* Do not inherit to_pass_signals. */
653 /* Do not inherit to_program_signals. */
654 /* Do not inherit to_thread_alive. */
655 /* Do not inherit to_find_new_threads. */
656 /* Do not inherit to_pid_to_str. */
657 /* Do not inherit to_extra_thread_info. */
658 /* Do not inherit to_thread_name. */
659 INHERIT (to_stop, t);
660 /* Do not inherit to_xfer_partial. */
661 /* Do not inherit to_rcmd. */
662 /* Do not inherit to_pid_to_exec_file. */
663 /* Do not inherit to_log_command. */
664 INHERIT (to_stratum, t);
665 /* Do not inherit to_has_all_memory. */
666 /* Do not inherit to_has_memory. */
667 /* Do not inherit to_has_stack. */
668 /* Do not inherit to_has_registers. */
669 /* Do not inherit to_has_execution. */
670 INHERIT (to_has_thread_control, t);
671 /* Do not inherit to_can_async_p. */
672 /* Do not inherit to_is_async_p. */
673 /* Do not inherit to_async. */
674 /* Do not inherit to_find_memory_regions. */
675 /* Do not inherit to_make_corefile_notes. */
676 /* Do not inherit to_get_bookmark. */
677 /* Do not inherit to_goto_bookmark. */
678 /* Do not inherit to_get_thread_local_address. */
679 /* Do not inherit to_can_execute_reverse. */
680 /* Do not inherit to_execution_direction. */
681 INHERIT (to_thread_architecture, t);
682 /* Do not inherit to_read_description. */
683 INHERIT (to_get_ada_task_ptid, t);
684 /* Do not inherit to_search_memory. */
685 INHERIT (to_supports_multi_process, t);
686 INHERIT (to_supports_enable_disable_tracepoint, t);
687 INHERIT (to_supports_string_tracing, t);
688 INHERIT (to_trace_init, t);
689 INHERIT (to_download_tracepoint, t);
690 INHERIT (to_can_download_tracepoint, t);
691 INHERIT (to_download_trace_state_variable, t);
692 INHERIT (to_enable_tracepoint, t);
693 INHERIT (to_disable_tracepoint, t);
694 INHERIT (to_trace_set_readonly_regions, t);
695 INHERIT (to_trace_start, t);
696 INHERIT (to_get_trace_status, t);
697 INHERIT (to_get_tracepoint_status, t);
698 INHERIT (to_trace_stop, t);
699 INHERIT (to_trace_find, t);
700 INHERIT (to_get_trace_state_variable_value, t);
701 INHERIT (to_save_trace_data, t);
702 INHERIT (to_upload_tracepoints, t);
703 INHERIT (to_upload_trace_state_variables, t);
704 INHERIT (to_get_raw_trace_data, t);
705 INHERIT (to_get_min_fast_tracepoint_insn_len, t);
706 INHERIT (to_set_disconnected_tracing, t);
707 INHERIT (to_set_circular_trace_buffer, t);
708 INHERIT (to_set_trace_buffer_size, t);
709 INHERIT (to_set_trace_notes, t);
710 INHERIT (to_get_tib_address, t);
711 INHERIT (to_set_permissions, t);
712 INHERIT (to_static_tracepoint_marker_at, t);
713 INHERIT (to_static_tracepoint_markers_by_strid, t);
714 INHERIT (to_traceframe_info, t);
715 INHERIT (to_use_agent, t);
716 INHERIT (to_can_use_agent, t);
717 INHERIT (to_augmented_libraries_svr4_read, t);
718 INHERIT (to_magic, t);
719 INHERIT (to_supports_evaluation_of_breakpoint_conditions, t);
720 INHERIT (to_can_run_breakpoint_commands, t);
721 /* Do not inherit to_memory_map. */
722 /* Do not inherit to_flash_erase. */
723 /* Do not inherit to_flash_done. */
727 /* Clean up a target struct so it no longer has any zero pointers in
728 it. Some entries are defaulted to a method that print an error,
729 others are hard-wired to a standard recursive default. */
731 #define de_fault(field, value) \
732 if (!current_target.field) \
733 current_target.field = value
736 (void (*) (char *, int))
739 (void (*) (struct target_ops *))
741 de_fault (deprecated_xfer_memory,
742 (int (*) (CORE_ADDR, gdb_byte *, int, int,
743 struct mem_attrib *, struct target_ops *))
745 de_fault (to_can_run,
746 (int (*) (struct target_ops *))
749 (void (*) (struct target_ops *, ptid_t))
751 de_fault (to_thread_architecture,
752 default_thread_architecture);
753 current_target.to_read_description = NULL;
754 de_fault (to_get_ada_task_ptid,
755 (ptid_t (*) (struct target_ops *, long, long))
756 default_get_ada_task_ptid);
757 de_fault (to_supports_multi_process,
758 (int (*) (struct target_ops *))
760 de_fault (to_supports_enable_disable_tracepoint,
761 (int (*) (struct target_ops *))
763 de_fault (to_supports_string_tracing,
764 (int (*) (struct target_ops *))
766 de_fault (to_trace_init,
767 (void (*) (struct target_ops *))
769 de_fault (to_download_tracepoint,
770 (void (*) (struct target_ops *, struct bp_location *))
772 de_fault (to_can_download_tracepoint,
773 (int (*) (struct target_ops *))
775 de_fault (to_download_trace_state_variable,
776 (void (*) (struct target_ops *, struct trace_state_variable *))
778 de_fault (to_enable_tracepoint,
779 (void (*) (struct target_ops *, struct bp_location *))
781 de_fault (to_disable_tracepoint,
782 (void (*) (struct target_ops *, struct bp_location *))
784 de_fault (to_trace_set_readonly_regions,
785 (void (*) (struct target_ops *))
787 de_fault (to_trace_start,
788 (void (*) (struct target_ops *))
790 de_fault (to_get_trace_status,
791 (int (*) (struct target_ops *, struct trace_status *))
793 de_fault (to_get_tracepoint_status,
794 (void (*) (struct target_ops *, struct breakpoint *,
795 struct uploaded_tp *))
797 de_fault (to_trace_stop,
798 (void (*) (struct target_ops *))
800 de_fault (to_trace_find,
801 (int (*) (struct target_ops *,
802 enum trace_find_type, int, CORE_ADDR, CORE_ADDR, int *))
804 de_fault (to_get_trace_state_variable_value,
805 (int (*) (struct target_ops *, int, LONGEST *))
807 de_fault (to_save_trace_data,
808 (int (*) (struct target_ops *, const char *))
810 de_fault (to_upload_tracepoints,
811 (int (*) (struct target_ops *, struct uploaded_tp **))
813 de_fault (to_upload_trace_state_variables,
814 (int (*) (struct target_ops *, struct uploaded_tsv **))
816 de_fault (to_get_raw_trace_data,
817 (LONGEST (*) (struct target_ops *, gdb_byte *, ULONGEST, LONGEST))
819 de_fault (to_get_min_fast_tracepoint_insn_len,
820 (int (*) (struct target_ops *))
822 de_fault (to_set_disconnected_tracing,
823 (void (*) (struct target_ops *, int))
825 de_fault (to_set_circular_trace_buffer,
826 (void (*) (struct target_ops *, int))
828 de_fault (to_set_trace_buffer_size,
829 (void (*) (struct target_ops *, LONGEST))
831 de_fault (to_set_trace_notes,
832 (int (*) (struct target_ops *,
833 const char *, const char *, const char *))
835 de_fault (to_get_tib_address,
836 (int (*) (struct target_ops *, ptid_t, CORE_ADDR *))
838 de_fault (to_set_permissions,
839 (void (*) (struct target_ops *))
841 de_fault (to_static_tracepoint_marker_at,
842 (int (*) (struct target_ops *,
843 CORE_ADDR, struct static_tracepoint_marker *))
845 de_fault (to_static_tracepoint_markers_by_strid,
846 (VEC(static_tracepoint_marker_p) * (*) (struct target_ops *,
849 de_fault (to_traceframe_info,
850 (struct traceframe_info * (*) (struct target_ops *))
852 de_fault (to_supports_evaluation_of_breakpoint_conditions,
853 (int (*) (struct target_ops *))
855 de_fault (to_can_run_breakpoint_commands,
856 (int (*) (struct target_ops *))
858 de_fault (to_use_agent,
859 (int (*) (struct target_ops *, int))
861 de_fault (to_can_use_agent,
862 (int (*) (struct target_ops *))
864 de_fault (to_augmented_libraries_svr4_read,
865 (int (*) (struct target_ops *))
870 /* Finally, position the target-stack beneath the squashed
871 "current_target". That way code looking for a non-inherited
872 target method can quickly and simply find it. */
873 current_target.beneath = target_stack;
876 setup_target_debug ();
879 /* Push a new target type into the stack of the existing target accessors,
880 possibly superseding some of the existing accessors.
882 Rather than allow an empty stack, we always have the dummy target at
883 the bottom stratum, so we can call the function vectors without
887 push_target (struct target_ops *t)
889 struct target_ops **cur;
891 /* Check magic number. If wrong, it probably means someone changed
892 the struct definition, but not all the places that initialize one. */
893 if (t->to_magic != OPS_MAGIC)
895 fprintf_unfiltered (gdb_stderr,
896 "Magic number of %s target struct wrong\n",
898 internal_error (__FILE__, __LINE__,
899 _("failed internal consistency check"));
902 /* Find the proper stratum to install this target in. */
903 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
905 if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum)
909 /* If there's already targets at this stratum, remove them. */
910 /* FIXME: cagney/2003-10-15: I think this should be popping all
911 targets to CUR, and not just those at this stratum level. */
912 while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum)
914 /* There's already something at this stratum level. Close it,
915 and un-hook it from the stack. */
916 struct target_ops *tmp = (*cur);
918 (*cur) = (*cur)->beneath;
923 /* We have removed all targets in our stratum, now add the new one. */
927 update_current_target ();
930 /* Remove a target_ops vector from the stack, wherever it may be.
931 Return how many times it was removed (0 or 1). */
934 unpush_target (struct target_ops *t)
936 struct target_ops **cur;
937 struct target_ops *tmp;
939 if (t->to_stratum == dummy_stratum)
940 internal_error (__FILE__, __LINE__,
941 _("Attempt to unpush the dummy target"));
943 /* Look for the specified target. Note that we assume that a target
944 can only occur once in the target stack. */
946 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
952 /* If we don't find target_ops, quit. Only open targets should be
957 /* Unchain the target. */
959 (*cur) = (*cur)->beneath;
962 update_current_target ();
964 /* Finally close the target. Note we do this after unchaining, so
965 any target method calls from within the target_close
966 implementation don't end up in T anymore. */
973 pop_all_targets_above (enum strata above_stratum)
975 while ((int) (current_target.to_stratum) > (int) above_stratum)
977 if (!unpush_target (target_stack))
979 fprintf_unfiltered (gdb_stderr,
980 "pop_all_targets couldn't find target %s\n",
981 target_stack->to_shortname);
982 internal_error (__FILE__, __LINE__,
983 _("failed internal consistency check"));
990 pop_all_targets (void)
992 pop_all_targets_above (dummy_stratum);
995 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
998 target_is_pushed (struct target_ops *t)
1000 struct target_ops **cur;
1002 /* Check magic number. If wrong, it probably means someone changed
1003 the struct definition, but not all the places that initialize one. */
1004 if (t->to_magic != OPS_MAGIC)
1006 fprintf_unfiltered (gdb_stderr,
1007 "Magic number of %s target struct wrong\n",
1009 internal_error (__FILE__, __LINE__,
1010 _("failed internal consistency check"));
1013 for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
1020 /* Using the objfile specified in OBJFILE, find the address for the
1021 current thread's thread-local storage with offset OFFSET. */
1023 target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset)
1025 volatile CORE_ADDR addr = 0;
1026 struct target_ops *target;
1028 for (target = current_target.beneath;
1030 target = target->beneath)
1032 if (target->to_get_thread_local_address != NULL)
1037 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
1039 ptid_t ptid = inferior_ptid;
1040 volatile struct gdb_exception ex;
1042 TRY_CATCH (ex, RETURN_MASK_ALL)
1046 /* Fetch the load module address for this objfile. */
1047 lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1049 /* If it's 0, throw the appropriate exception. */
1051 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR,
1052 _("TLS load module not found"));
1054 addr = target->to_get_thread_local_address (target, ptid,
1057 /* If an error occurred, print TLS related messages here. Otherwise,
1058 throw the error to some higher catcher. */
1061 int objfile_is_library = (objfile->flags & OBJF_SHARED);
1065 case TLS_NO_LIBRARY_SUPPORT_ERROR:
1066 error (_("Cannot find thread-local variables "
1067 "in this thread library."));
1069 case TLS_LOAD_MODULE_NOT_FOUND_ERROR:
1070 if (objfile_is_library)
1071 error (_("Cannot find shared library `%s' in dynamic"
1072 " linker's load module list"), objfile_name (objfile));
1074 error (_("Cannot find executable file `%s' in dynamic"
1075 " linker's load module list"), objfile_name (objfile));
1077 case TLS_NOT_ALLOCATED_YET_ERROR:
1078 if (objfile_is_library)
1079 error (_("The inferior has not yet allocated storage for"
1080 " thread-local variables in\n"
1081 "the shared library `%s'\n"
1083 objfile_name (objfile), target_pid_to_str (ptid));
1085 error (_("The inferior has not yet allocated storage for"
1086 " thread-local variables in\n"
1087 "the executable `%s'\n"
1089 objfile_name (objfile), target_pid_to_str (ptid));
1091 case TLS_GENERIC_ERROR:
1092 if (objfile_is_library)
1093 error (_("Cannot find thread-local storage for %s, "
1094 "shared library %s:\n%s"),
1095 target_pid_to_str (ptid),
1096 objfile_name (objfile), ex.message);
1098 error (_("Cannot find thread-local storage for %s, "
1099 "executable file %s:\n%s"),
1100 target_pid_to_str (ptid),
1101 objfile_name (objfile), ex.message);
1104 throw_exception (ex);
1109 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1110 TLS is an ABI-specific thing. But we don't do that yet. */
1112 error (_("Cannot find thread-local variables on this target"));
1118 target_xfer_status_to_string (enum target_xfer_status err)
1120 #define CASE(X) case X: return #X
1123 CASE(TARGET_XFER_E_IO);
1124 CASE(TARGET_XFER_E_UNAVAILABLE);
1133 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1135 /* target_read_string -- read a null terminated string, up to LEN bytes,
1136 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1137 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1138 is responsible for freeing it. Return the number of bytes successfully
1142 target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop)
1144 int tlen, offset, i;
1148 int buffer_allocated;
1150 unsigned int nbytes_read = 0;
1152 gdb_assert (string);
1154 /* Small for testing. */
1155 buffer_allocated = 4;
1156 buffer = xmalloc (buffer_allocated);
1161 tlen = MIN (len, 4 - (memaddr & 3));
1162 offset = memaddr & 3;
1164 errcode = target_read_memory (memaddr & ~3, buf, sizeof buf);
1167 /* The transfer request might have crossed the boundary to an
1168 unallocated region of memory. Retry the transfer, requesting
1172 errcode = target_read_memory (memaddr, buf, 1);
1177 if (bufptr - buffer + tlen > buffer_allocated)
1181 bytes = bufptr - buffer;
1182 buffer_allocated *= 2;
1183 buffer = xrealloc (buffer, buffer_allocated);
1184 bufptr = buffer + bytes;
1187 for (i = 0; i < tlen; i++)
1189 *bufptr++ = buf[i + offset];
1190 if (buf[i + offset] == '\000')
1192 nbytes_read += i + 1;
1199 nbytes_read += tlen;
1208 struct target_section_table *
1209 target_get_section_table (struct target_ops *target)
1211 struct target_ops *t;
1214 fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n");
1216 for (t = target; t != NULL; t = t->beneath)
1217 if (t->to_get_section_table != NULL)
1218 return (*t->to_get_section_table) (t);
1223 /* Find a section containing ADDR. */
1225 struct target_section *
1226 target_section_by_addr (struct target_ops *target, CORE_ADDR addr)
1228 struct target_section_table *table = target_get_section_table (target);
1229 struct target_section *secp;
1234 for (secp = table->sections; secp < table->sections_end; secp++)
1236 if (addr >= secp->addr && addr < secp->endaddr)
1242 /* Read memory from the live target, even if currently inspecting a
1243 traceframe. The return is the same as that of target_read. */
1245 static enum target_xfer_status
1246 target_read_live_memory (enum target_object object,
1247 ULONGEST memaddr, gdb_byte *myaddr, ULONGEST len,
1248 ULONGEST *xfered_len)
1250 enum target_xfer_status ret;
1251 struct cleanup *cleanup;
1253 /* Switch momentarily out of tfind mode so to access live memory.
1254 Note that this must not clear global state, such as the frame
1255 cache, which must still remain valid for the previous traceframe.
1256 We may be _building_ the frame cache at this point. */
1257 cleanup = make_cleanup_restore_traceframe_number ();
1258 set_traceframe_number (-1);
1260 ret = target_xfer_partial (current_target.beneath, object, NULL,
1261 myaddr, NULL, memaddr, len, xfered_len);
1263 do_cleanups (cleanup);
1267 /* Using the set of read-only target sections of OPS, read live
1268 read-only memory. Note that the actual reads start from the
1269 top-most target again.
1271 For interface/parameters/return description see target.h,
1274 static enum target_xfer_status
1275 memory_xfer_live_readonly_partial (struct target_ops *ops,
1276 enum target_object object,
1277 gdb_byte *readbuf, ULONGEST memaddr,
1278 ULONGEST len, ULONGEST *xfered_len)
1280 struct target_section *secp;
1281 struct target_section_table *table;
1283 secp = target_section_by_addr (ops, memaddr);
1285 && (bfd_get_section_flags (secp->the_bfd_section->owner,
1286 secp->the_bfd_section)
1289 struct target_section *p;
1290 ULONGEST memend = memaddr + len;
1292 table = target_get_section_table (ops);
1294 for (p = table->sections; p < table->sections_end; p++)
1296 if (memaddr >= p->addr)
1298 if (memend <= p->endaddr)
1300 /* Entire transfer is within this section. */
1301 return target_read_live_memory (object, memaddr,
1302 readbuf, len, xfered_len);
1304 else if (memaddr >= p->endaddr)
1306 /* This section ends before the transfer starts. */
1311 /* This section overlaps the transfer. Just do half. */
1312 len = p->endaddr - memaddr;
1313 return target_read_live_memory (object, memaddr,
1314 readbuf, len, xfered_len);
1320 return TARGET_XFER_EOF;
1323 /* Read memory from more than one valid target. A core file, for
1324 instance, could have some of memory but delegate other bits to
1325 the target below it. So, we must manually try all targets. */
1327 static enum target_xfer_status
1328 raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf,
1329 const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len,
1330 ULONGEST *xfered_len)
1332 enum target_xfer_status res;
1336 res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL,
1337 readbuf, writebuf, memaddr, len,
1339 if (res == TARGET_XFER_OK)
1342 /* Stop if the target reports that the memory is not available. */
1343 if (res == TARGET_XFER_E_UNAVAILABLE)
1346 /* We want to continue past core files to executables, but not
1347 past a running target's memory. */
1348 if (ops->to_has_all_memory (ops))
1353 while (ops != NULL);
1358 /* Perform a partial memory transfer.
1359 For docs see target.h, to_xfer_partial. */
1361 static enum target_xfer_status
1362 memory_xfer_partial_1 (struct target_ops *ops, enum target_object object,
1363 gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr,
1364 ULONGEST len, ULONGEST *xfered_len)
1366 enum target_xfer_status res;
1368 struct mem_region *region;
1369 struct inferior *inf;
1371 /* For accesses to unmapped overlay sections, read directly from
1372 files. Must do this first, as MEMADDR may need adjustment. */
1373 if (readbuf != NULL && overlay_debugging)
1375 struct obj_section *section = find_pc_overlay (memaddr);
1377 if (pc_in_unmapped_range (memaddr, section))
1379 struct target_section_table *table
1380 = target_get_section_table (ops);
1381 const char *section_name = section->the_bfd_section->name;
1383 memaddr = overlay_mapped_address (memaddr, section);
1384 return section_table_xfer_memory_partial (readbuf, writebuf,
1385 memaddr, len, xfered_len,
1387 table->sections_end,
1392 /* Try the executable files, if "trust-readonly-sections" is set. */
1393 if (readbuf != NULL && trust_readonly)
1395 struct target_section *secp;
1396 struct target_section_table *table;
1398 secp = target_section_by_addr (ops, memaddr);
1400 && (bfd_get_section_flags (secp->the_bfd_section->owner,
1401 secp->the_bfd_section)
1404 table = target_get_section_table (ops);
1405 return section_table_xfer_memory_partial (readbuf, writebuf,
1406 memaddr, len, xfered_len,
1408 table->sections_end,
1413 /* If reading unavailable memory in the context of traceframes, and
1414 this address falls within a read-only section, fallback to
1415 reading from live memory. */
1416 if (readbuf != NULL && get_traceframe_number () != -1)
1418 VEC(mem_range_s) *available;
1420 /* If we fail to get the set of available memory, then the
1421 target does not support querying traceframe info, and so we
1422 attempt reading from the traceframe anyway (assuming the
1423 target implements the old QTro packet then). */
1424 if (traceframe_available_memory (&available, memaddr, len))
1426 struct cleanup *old_chain;
1428 old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available);
1430 if (VEC_empty (mem_range_s, available)
1431 || VEC_index (mem_range_s, available, 0)->start != memaddr)
1433 /* Don't read into the traceframe's available
1435 if (!VEC_empty (mem_range_s, available))
1437 LONGEST oldlen = len;
1439 len = VEC_index (mem_range_s, available, 0)->start - memaddr;
1440 gdb_assert (len <= oldlen);
1443 do_cleanups (old_chain);
1445 /* This goes through the topmost target again. */
1446 res = memory_xfer_live_readonly_partial (ops, object,
1449 if (res == TARGET_XFER_OK)
1450 return TARGET_XFER_OK;
1453 /* No use trying further, we know some memory starting
1454 at MEMADDR isn't available. */
1456 return TARGET_XFER_E_UNAVAILABLE;
1460 /* Don't try to read more than how much is available, in
1461 case the target implements the deprecated QTro packet to
1462 cater for older GDBs (the target's knowledge of read-only
1463 sections may be outdated by now). */
1464 len = VEC_index (mem_range_s, available, 0)->length;
1466 do_cleanups (old_chain);
1470 /* Try GDB's internal data cache. */
1471 region = lookup_mem_region (memaddr);
1472 /* region->hi == 0 means there's no upper bound. */
1473 if (memaddr + len < region->hi || region->hi == 0)
1476 reg_len = region->hi - memaddr;
1478 switch (region->attrib.mode)
1481 if (writebuf != NULL)
1482 return TARGET_XFER_E_IO;
1486 if (readbuf != NULL)
1487 return TARGET_XFER_E_IO;
1491 /* We only support writing to flash during "load" for now. */
1492 if (writebuf != NULL)
1493 error (_("Writing to flash memory forbidden in this context"));
1497 return TARGET_XFER_E_IO;
1500 if (!ptid_equal (inferior_ptid, null_ptid))
1501 inf = find_inferior_pid (ptid_get_pid (inferior_ptid));
1506 /* The dcache reads whole cache lines; that doesn't play well
1507 with reading from a trace buffer, because reading outside of
1508 the collected memory range fails. */
1509 && get_traceframe_number () == -1
1510 && (region->attrib.cache
1511 || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY)
1512 || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY)))
1514 DCACHE *dcache = target_dcache_get_or_init ();
1517 if (readbuf != NULL)
1518 l = dcache_xfer_memory (ops, dcache, memaddr, readbuf, reg_len, 0);
1520 /* FIXME drow/2006-08-09: If we're going to preserve const
1521 correctness dcache_xfer_memory should take readbuf and
1523 l = dcache_xfer_memory (ops, dcache, memaddr, (void *) writebuf,
1526 return TARGET_XFER_E_IO;
1529 *xfered_len = (ULONGEST) l;
1530 return TARGET_XFER_OK;
1534 /* If none of those methods found the memory we wanted, fall back
1535 to a target partial transfer. Normally a single call to
1536 to_xfer_partial is enough; if it doesn't recognize an object
1537 it will call the to_xfer_partial of the next target down.
1538 But for memory this won't do. Memory is the only target
1539 object which can be read from more than one valid target.
1540 A core file, for instance, could have some of memory but
1541 delegate other bits to the target below it. So, we must
1542 manually try all targets. */
1544 res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len,
1547 /* Make sure the cache gets updated no matter what - if we are writing
1548 to the stack. Even if this write is not tagged as such, we still need
1549 to update the cache. */
1551 if (res == TARGET_XFER_OK
1554 && target_dcache_init_p ()
1555 && !region->attrib.cache
1556 && ((stack_cache_enabled_p () && object != TARGET_OBJECT_STACK_MEMORY)
1557 || (code_cache_enabled_p () && object != TARGET_OBJECT_CODE_MEMORY)))
1559 DCACHE *dcache = target_dcache_get ();
1561 dcache_update (dcache, memaddr, (void *) writebuf, reg_len);
1564 /* If we still haven't got anything, return the last error. We
1569 /* Perform a partial memory transfer. For docs see target.h,
1572 static enum target_xfer_status
1573 memory_xfer_partial (struct target_ops *ops, enum target_object object,
1574 gdb_byte *readbuf, const gdb_byte *writebuf,
1575 ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len)
1577 enum target_xfer_status res;
1579 /* Zero length requests are ok and require no work. */
1581 return TARGET_XFER_EOF;
1583 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1584 breakpoint insns, thus hiding out from higher layers whether
1585 there are software breakpoints inserted in the code stream. */
1586 if (readbuf != NULL)
1588 res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len,
1591 if (res == TARGET_XFER_OK && !show_memory_breakpoints)
1592 breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, res);
1597 struct cleanup *old_chain;
1599 /* A large write request is likely to be partially satisfied
1600 by memory_xfer_partial_1. We will continually malloc
1601 and free a copy of the entire write request for breakpoint
1602 shadow handling even though we only end up writing a small
1603 subset of it. Cap writes to 4KB to mitigate this. */
1604 len = min (4096, len);
1606 buf = xmalloc (len);
1607 old_chain = make_cleanup (xfree, buf);
1608 memcpy (buf, writebuf, len);
1610 breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len);
1611 res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len,
1614 do_cleanups (old_chain);
1621 restore_show_memory_breakpoints (void *arg)
1623 show_memory_breakpoints = (uintptr_t) arg;
1627 make_show_memory_breakpoints_cleanup (int show)
1629 int current = show_memory_breakpoints;
1631 show_memory_breakpoints = show;
1632 return make_cleanup (restore_show_memory_breakpoints,
1633 (void *) (uintptr_t) current);
1636 /* For docs see target.h, to_xfer_partial. */
1638 enum target_xfer_status
1639 target_xfer_partial (struct target_ops *ops,
1640 enum target_object object, const char *annex,
1641 gdb_byte *readbuf, const gdb_byte *writebuf,
1642 ULONGEST offset, ULONGEST len,
1643 ULONGEST *xfered_len)
1645 enum target_xfer_status retval;
1647 gdb_assert (ops->to_xfer_partial != NULL);
1649 /* Transfer is done when LEN is zero. */
1651 return TARGET_XFER_EOF;
1653 if (writebuf && !may_write_memory)
1654 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1655 core_addr_to_string_nz (offset), plongest (len));
1659 /* If this is a memory transfer, let the memory-specific code
1660 have a look at it instead. Memory transfers are more
1662 if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY
1663 || object == TARGET_OBJECT_CODE_MEMORY)
1664 retval = memory_xfer_partial (ops, object, readbuf,
1665 writebuf, offset, len, xfered_len);
1666 else if (object == TARGET_OBJECT_RAW_MEMORY)
1668 /* Request the normal memory object from other layers. */
1669 retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len,
1673 retval = ops->to_xfer_partial (ops, object, annex, readbuf,
1674 writebuf, offset, len, xfered_len);
1678 const unsigned char *myaddr = NULL;
1680 fprintf_unfiltered (gdb_stdlog,
1681 "%s:target_xfer_partial "
1682 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1685 (annex ? annex : "(null)"),
1686 host_address_to_string (readbuf),
1687 host_address_to_string (writebuf),
1688 core_addr_to_string_nz (offset),
1689 pulongest (len), retval,
1690 pulongest (*xfered_len));
1696 if (retval == TARGET_XFER_OK && myaddr != NULL)
1700 fputs_unfiltered (", bytes =", gdb_stdlog);
1701 for (i = 0; i < *xfered_len; i++)
1703 if ((((intptr_t) &(myaddr[i])) & 0xf) == 0)
1705 if (targetdebug < 2 && i > 0)
1707 fprintf_unfiltered (gdb_stdlog, " ...");
1710 fprintf_unfiltered (gdb_stdlog, "\n");
1713 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
1717 fputc_unfiltered ('\n', gdb_stdlog);
1720 /* Check implementations of to_xfer_partial update *XFERED_LEN
1721 properly. Do assertion after printing debug messages, so that we
1722 can find more clues on assertion failure from debugging messages. */
1723 if (retval == TARGET_XFER_OK || retval == TARGET_XFER_E_UNAVAILABLE)
1724 gdb_assert (*xfered_len > 0);
1729 /* Read LEN bytes of target memory at address MEMADDR, placing the
1730 results in GDB's memory at MYADDR. Returns either 0 for success or
1731 TARGET_XFER_E_IO if any error occurs.
1733 If an error occurs, no guarantee is made about the contents of the data at
1734 MYADDR. In particular, the caller should not depend upon partial reads
1735 filling the buffer with good data. There is no way for the caller to know
1736 how much good data might have been transfered anyway. Callers that can
1737 deal with partial reads should call target_read (which will retry until
1738 it makes no progress, and then return how much was transferred). */
1741 target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1743 /* Dispatch to the topmost target, not the flattened current_target.
1744 Memory accesses check target->to_has_(all_)memory, and the
1745 flattened target doesn't inherit those. */
1746 if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL,
1747 myaddr, memaddr, len) == len)
1750 return TARGET_XFER_E_IO;
1753 /* Like target_read_memory, but specify explicitly that this is a read
1754 from the target's raw memory. That is, this read bypasses the
1755 dcache, breakpoint shadowing, etc. */
1758 target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1760 /* See comment in target_read_memory about why the request starts at
1761 current_target.beneath. */
1762 if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL,
1763 myaddr, memaddr, len) == len)
1766 return TARGET_XFER_E_IO;
1769 /* Like target_read_memory, but specify explicitly that this is a read from
1770 the target's stack. This may trigger different cache behavior. */
1773 target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1775 /* See comment in target_read_memory about why the request starts at
1776 current_target.beneath. */
1777 if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL,
1778 myaddr, memaddr, len) == len)
1781 return TARGET_XFER_E_IO;
1784 /* Like target_read_memory, but specify explicitly that this is a read from
1785 the target's code. This may trigger different cache behavior. */
1788 target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
1790 /* See comment in target_read_memory about why the request starts at
1791 current_target.beneath. */
1792 if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL,
1793 myaddr, memaddr, len) == len)
1796 return TARGET_XFER_E_IO;
1799 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1800 Returns either 0 for success or TARGET_XFER_E_IO if any
1801 error occurs. If an error occurs, no guarantee is made about how
1802 much data got written. Callers that can deal with partial writes
1803 should call target_write. */
1806 target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
1808 /* See comment in target_read_memory about why the request starts at
1809 current_target.beneath. */
1810 if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL,
1811 myaddr, memaddr, len) == len)
1814 return TARGET_XFER_E_IO;
1817 /* Write LEN bytes from MYADDR to target raw memory at address
1818 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1819 if any error occurs. If an error occurs, no guarantee is made
1820 about how much data got written. Callers that can deal with
1821 partial writes should call target_write. */
1824 target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
1826 /* See comment in target_read_memory about why the request starts at
1827 current_target.beneath. */
1828 if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL,
1829 myaddr, memaddr, len) == len)
1832 return TARGET_XFER_E_IO;
1835 /* Fetch the target's memory map. */
1838 target_memory_map (void)
1840 VEC(mem_region_s) *result;
1841 struct mem_region *last_one, *this_one;
1843 struct target_ops *t;
1846 fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n");
1848 for (t = current_target.beneath; t != NULL; t = t->beneath)
1849 if (t->to_memory_map != NULL)
1855 result = t->to_memory_map (t);
1859 qsort (VEC_address (mem_region_s, result),
1860 VEC_length (mem_region_s, result),
1861 sizeof (struct mem_region), mem_region_cmp);
1863 /* Check that regions do not overlap. Simultaneously assign
1864 a numbering for the "mem" commands to use to refer to
1867 for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++)
1869 this_one->number = ix;
1871 if (last_one && last_one->hi > this_one->lo)
1873 warning (_("Overlapping regions in memory map: ignoring"));
1874 VEC_free (mem_region_s, result);
1877 last_one = this_one;
1884 target_flash_erase (ULONGEST address, LONGEST length)
1886 struct target_ops *t;
1888 for (t = current_target.beneath; t != NULL; t = t->beneath)
1889 if (t->to_flash_erase != NULL)
1892 fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n",
1893 hex_string (address), phex (length, 0));
1894 t->to_flash_erase (t, address, length);
1902 target_flash_done (void)
1904 struct target_ops *t;
1906 for (t = current_target.beneath; t != NULL; t = t->beneath)
1907 if (t->to_flash_done != NULL)
1910 fprintf_unfiltered (gdb_stdlog, "target_flash_done\n");
1911 t->to_flash_done (t);
1919 show_trust_readonly (struct ui_file *file, int from_tty,
1920 struct cmd_list_element *c, const char *value)
1922 fprintf_filtered (file,
1923 _("Mode for reading from readonly sections is %s.\n"),
1927 /* More generic transfers. */
1929 static enum target_xfer_status
1930 default_xfer_partial (struct target_ops *ops, enum target_object object,
1931 const char *annex, gdb_byte *readbuf,
1932 const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
1933 ULONGEST *xfered_len)
1935 if (object == TARGET_OBJECT_MEMORY
1936 && ops->deprecated_xfer_memory != NULL)
1937 /* If available, fall back to the target's
1938 "deprecated_xfer_memory" method. */
1943 if (writebuf != NULL)
1945 void *buffer = xmalloc (len);
1946 struct cleanup *cleanup = make_cleanup (xfree, buffer);
1948 memcpy (buffer, writebuf, len);
1949 xfered = ops->deprecated_xfer_memory (offset, buffer, len,
1950 1/*write*/, NULL, ops);
1951 do_cleanups (cleanup);
1953 if (readbuf != NULL)
1954 xfered = ops->deprecated_xfer_memory (offset, readbuf, len,
1955 0/*read*/, NULL, ops);
1958 *xfered_len = (ULONGEST) xfered;
1959 return TARGET_XFER_E_IO;
1961 else if (xfered == 0 && errno == 0)
1962 /* "deprecated_xfer_memory" uses 0, cross checked against
1963 ERRNO as one indication of an error. */
1964 return TARGET_XFER_EOF;
1966 return TARGET_XFER_E_IO;
1970 gdb_assert (ops->beneath != NULL);
1971 return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
1972 readbuf, writebuf, offset, len,
1977 /* Target vector read/write partial wrapper functions. */
1979 static enum target_xfer_status
1980 target_read_partial (struct target_ops *ops,
1981 enum target_object object,
1982 const char *annex, gdb_byte *buf,
1983 ULONGEST offset, ULONGEST len,
1984 ULONGEST *xfered_len)
1986 return target_xfer_partial (ops, object, annex, buf, NULL, offset, len,
1990 static enum target_xfer_status
1991 target_write_partial (struct target_ops *ops,
1992 enum target_object object,
1993 const char *annex, const gdb_byte *buf,
1994 ULONGEST offset, LONGEST len, ULONGEST *xfered_len)
1996 return target_xfer_partial (ops, object, annex, NULL, buf, offset, len,
2000 /* Wrappers to perform the full transfer. */
2002 /* For docs on target_read see target.h. */
2005 target_read (struct target_ops *ops,
2006 enum target_object object,
2007 const char *annex, gdb_byte *buf,
2008 ULONGEST offset, LONGEST len)
2012 while (xfered < len)
2014 ULONGEST xfered_len;
2015 enum target_xfer_status status;
2017 status = target_read_partial (ops, object, annex,
2018 (gdb_byte *) buf + xfered,
2019 offset + xfered, len - xfered,
2022 /* Call an observer, notifying them of the xfer progress? */
2023 if (status == TARGET_XFER_EOF)
2025 else if (status == TARGET_XFER_OK)
2027 xfered += xfered_len;
2037 /* Assuming that the entire [begin, end) range of memory cannot be
2038 read, try to read whatever subrange is possible to read.
2040 The function returns, in RESULT, either zero or one memory block.
2041 If there's a readable subrange at the beginning, it is completely
2042 read and returned. Any further readable subrange will not be read.
2043 Otherwise, if there's a readable subrange at the end, it will be
2044 completely read and returned. Any readable subranges before it
2045 (obviously, not starting at the beginning), will be ignored. In
2046 other cases -- either no readable subrange, or readable subrange(s)
2047 that is neither at the beginning, or end, nothing is returned.
2049 The purpose of this function is to handle a read across a boundary
2050 of accessible memory in a case when memory map is not available.
2051 The above restrictions are fine for this case, but will give
2052 incorrect results if the memory is 'patchy'. However, supporting
2053 'patchy' memory would require trying to read every single byte,
2054 and it seems unacceptable solution. Explicit memory map is
2055 recommended for this case -- and target_read_memory_robust will
2056 take care of reading multiple ranges then. */
2059 read_whatever_is_readable (struct target_ops *ops,
2060 ULONGEST begin, ULONGEST end,
2061 VEC(memory_read_result_s) **result)
2063 gdb_byte *buf = xmalloc (end - begin);
2064 ULONGEST current_begin = begin;
2065 ULONGEST current_end = end;
2067 memory_read_result_s r;
2068 ULONGEST xfered_len;
2070 /* If we previously failed to read 1 byte, nothing can be done here. */
2071 if (end - begin <= 1)
2077 /* Check that either first or the last byte is readable, and give up
2078 if not. This heuristic is meant to permit reading accessible memory
2079 at the boundary of accessible region. */
2080 if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL,
2081 buf, begin, 1, &xfered_len) == TARGET_XFER_OK)
2086 else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL,
2087 buf + (end-begin) - 1, end - 1, 1,
2088 &xfered_len) == TARGET_XFER_OK)
2099 /* Loop invariant is that the [current_begin, current_end) was previously
2100 found to be not readable as a whole.
2102 Note loop condition -- if the range has 1 byte, we can't divide the range
2103 so there's no point trying further. */
2104 while (current_end - current_begin > 1)
2106 ULONGEST first_half_begin, first_half_end;
2107 ULONGEST second_half_begin, second_half_end;
2109 ULONGEST middle = current_begin + (current_end - current_begin)/2;
2113 first_half_begin = current_begin;
2114 first_half_end = middle;
2115 second_half_begin = middle;
2116 second_half_end = current_end;
2120 first_half_begin = middle;
2121 first_half_end = current_end;
2122 second_half_begin = current_begin;
2123 second_half_end = middle;
2126 xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2127 buf + (first_half_begin - begin),
2129 first_half_end - first_half_begin);
2131 if (xfer == first_half_end - first_half_begin)
2133 /* This half reads up fine. So, the error must be in the
2135 current_begin = second_half_begin;
2136 current_end = second_half_end;
2140 /* This half is not readable. Because we've tried one byte, we
2141 know some part of this half if actually redable. Go to the next
2142 iteration to divide again and try to read.
2144 We don't handle the other half, because this function only tries
2145 to read a single readable subrange. */
2146 current_begin = first_half_begin;
2147 current_end = first_half_end;
2153 /* The [begin, current_begin) range has been read. */
2155 r.end = current_begin;
2160 /* The [current_end, end) range has been read. */
2161 LONGEST rlen = end - current_end;
2163 r.data = xmalloc (rlen);
2164 memcpy (r.data, buf + current_end - begin, rlen);
2165 r.begin = current_end;
2169 VEC_safe_push(memory_read_result_s, (*result), &r);
2173 free_memory_read_result_vector (void *x)
2175 VEC(memory_read_result_s) *v = x;
2176 memory_read_result_s *current;
2179 for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix)
2181 xfree (current->data);
2183 VEC_free (memory_read_result_s, v);
2186 VEC(memory_read_result_s) *
2187 read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len)
2189 VEC(memory_read_result_s) *result = 0;
2192 while (xfered < len)
2194 struct mem_region *region = lookup_mem_region (offset + xfered);
2197 /* If there is no explicit region, a fake one should be created. */
2198 gdb_assert (region);
2200 if (region->hi == 0)
2201 rlen = len - xfered;
2203 rlen = region->hi - offset;
2205 if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO)
2207 /* Cannot read this region. Note that we can end up here only
2208 if the region is explicitly marked inaccessible, or
2209 'inaccessible-by-default' is in effect. */
2214 LONGEST to_read = min (len - xfered, rlen);
2215 gdb_byte *buffer = (gdb_byte *)xmalloc (to_read);
2217 LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2218 (gdb_byte *) buffer,
2219 offset + xfered, to_read);
2220 /* Call an observer, notifying them of the xfer progress? */
2223 /* Got an error reading full chunk. See if maybe we can read
2226 read_whatever_is_readable (ops, offset + xfered,
2227 offset + xfered + to_read, &result);
2232 struct memory_read_result r;
2234 r.begin = offset + xfered;
2235 r.end = r.begin + xfer;
2236 VEC_safe_push (memory_read_result_s, result, &r);
2246 /* An alternative to target_write with progress callbacks. */
2249 target_write_with_progress (struct target_ops *ops,
2250 enum target_object object,
2251 const char *annex, const gdb_byte *buf,
2252 ULONGEST offset, LONGEST len,
2253 void (*progress) (ULONGEST, void *), void *baton)
2257 /* Give the progress callback a chance to set up. */
2259 (*progress) (0, baton);
2261 while (xfered < len)
2263 ULONGEST xfered_len;
2264 enum target_xfer_status status;
2266 status = target_write_partial (ops, object, annex,
2267 (gdb_byte *) buf + xfered,
2268 offset + xfered, len - xfered,
2271 if (status == TARGET_XFER_EOF)
2273 if (TARGET_XFER_STATUS_ERROR_P (status))
2276 gdb_assert (status == TARGET_XFER_OK);
2278 (*progress) (xfered_len, baton);
2280 xfered += xfered_len;
2286 /* For docs on target_write see target.h. */
2289 target_write (struct target_ops *ops,
2290 enum target_object object,
2291 const char *annex, const gdb_byte *buf,
2292 ULONGEST offset, LONGEST len)
2294 return target_write_with_progress (ops, object, annex, buf, offset, len,
2298 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2299 the size of the transferred data. PADDING additional bytes are
2300 available in *BUF_P. This is a helper function for
2301 target_read_alloc; see the declaration of that function for more
2305 target_read_alloc_1 (struct target_ops *ops, enum target_object object,
2306 const char *annex, gdb_byte **buf_p, int padding)
2308 size_t buf_alloc, buf_pos;
2311 /* This function does not have a length parameter; it reads the
2312 entire OBJECT). Also, it doesn't support objects fetched partly
2313 from one target and partly from another (in a different stratum,
2314 e.g. a core file and an executable). Both reasons make it
2315 unsuitable for reading memory. */
2316 gdb_assert (object != TARGET_OBJECT_MEMORY);
2318 /* Start by reading up to 4K at a time. The target will throttle
2319 this number down if necessary. */
2321 buf = xmalloc (buf_alloc);
2325 ULONGEST xfered_len;
2326 enum target_xfer_status status;
2328 status = target_read_partial (ops, object, annex, &buf[buf_pos],
2329 buf_pos, buf_alloc - buf_pos - padding,
2332 if (status == TARGET_XFER_EOF)
2334 /* Read all there was. */
2341 else if (status != TARGET_XFER_OK)
2343 /* An error occurred. */
2345 return TARGET_XFER_E_IO;
2348 buf_pos += xfered_len;
2350 /* If the buffer is filling up, expand it. */
2351 if (buf_alloc < buf_pos * 2)
2354 buf = xrealloc (buf, buf_alloc);
2361 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2362 the size of the transferred data. See the declaration in "target.h"
2363 function for more information about the return value. */
2366 target_read_alloc (struct target_ops *ops, enum target_object object,
2367 const char *annex, gdb_byte **buf_p)
2369 return target_read_alloc_1 (ops, object, annex, buf_p, 0);
2372 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2373 returned as a string, allocated using xmalloc. If an error occurs
2374 or the transfer is unsupported, NULL is returned. Empty objects
2375 are returned as allocated but empty strings. A warning is issued
2376 if the result contains any embedded NUL bytes. */
2379 target_read_stralloc (struct target_ops *ops, enum target_object object,
2384 LONGEST i, transferred;
2386 transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1);
2387 bufstr = (char *) buffer;
2389 if (transferred < 0)
2392 if (transferred == 0)
2393 return xstrdup ("");
2395 bufstr[transferred] = 0;
2397 /* Check for embedded NUL bytes; but allow trailing NULs. */
2398 for (i = strlen (bufstr); i < transferred; i++)
2401 warning (_("target object %d, annex %s, "
2402 "contained unexpected null characters"),
2403 (int) object, annex ? annex : "(none)");
2410 /* Memory transfer methods. */
2413 get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf,
2416 /* This method is used to read from an alternate, non-current
2417 target. This read must bypass the overlay support (as symbols
2418 don't match this target), and GDB's internal cache (wrong cache
2419 for this target). */
2420 if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len)
2422 memory_error (TARGET_XFER_E_IO, addr);
2426 get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr,
2427 int len, enum bfd_endian byte_order)
2429 gdb_byte buf[sizeof (ULONGEST)];
2431 gdb_assert (len <= sizeof (buf));
2432 get_target_memory (ops, addr, buf, len);
2433 return extract_unsigned_integer (buf, len, byte_order);
2439 target_insert_breakpoint (struct gdbarch *gdbarch,
2440 struct bp_target_info *bp_tgt)
2442 if (!may_insert_breakpoints)
2444 warning (_("May not insert breakpoints"));
2448 return current_target.to_insert_breakpoint (¤t_target,
2455 target_remove_breakpoint (struct gdbarch *gdbarch,
2456 struct bp_target_info *bp_tgt)
2458 /* This is kind of a weird case to handle, but the permission might
2459 have been changed after breakpoints were inserted - in which case
2460 we should just take the user literally and assume that any
2461 breakpoints should be left in place. */
2462 if (!may_insert_breakpoints)
2464 warning (_("May not remove breakpoints"));
2468 return current_target.to_remove_breakpoint (¤t_target,
2473 target_info (char *args, int from_tty)
2475 struct target_ops *t;
2476 int has_all_mem = 0;
2478 if (symfile_objfile != NULL)
2479 printf_unfiltered (_("Symbols from \"%s\".\n"),
2480 objfile_name (symfile_objfile));
2482 for (t = target_stack; t != NULL; t = t->beneath)
2484 if (!(*t->to_has_memory) (t))
2487 if ((int) (t->to_stratum) <= (int) dummy_stratum)
2490 printf_unfiltered (_("\tWhile running this, "
2491 "GDB does not access memory from...\n"));
2492 printf_unfiltered ("%s:\n", t->to_longname);
2493 (t->to_files_info) (t);
2494 has_all_mem = (*t->to_has_all_memory) (t);
2498 /* This function is called before any new inferior is created, e.g.
2499 by running a program, attaching, or connecting to a target.
2500 It cleans up any state from previous invocations which might
2501 change between runs. This is a subset of what target_preopen
2502 resets (things which might change between targets). */
2505 target_pre_inferior (int from_tty)
2507 /* Clear out solib state. Otherwise the solib state of the previous
2508 inferior might have survived and is entirely wrong for the new
2509 target. This has been observed on GNU/Linux using glibc 2.3. How
2521 Cannot access memory at address 0xdeadbeef
2524 /* In some OSs, the shared library list is the same/global/shared
2525 across inferiors. If code is shared between processes, so are
2526 memory regions and features. */
2527 if (!gdbarch_has_global_solist (target_gdbarch ()))
2529 no_shared_libraries (NULL, from_tty);
2531 invalidate_target_mem_regions ();
2533 target_clear_description ();
2536 agent_capability_invalidate ();
2539 /* Callback for iterate_over_inferiors. Gets rid of the given
2543 dispose_inferior (struct inferior *inf, void *args)
2545 struct thread_info *thread;
2547 thread = any_thread_of_process (inf->pid);
2550 switch_to_thread (thread->ptid);
2552 /* Core inferiors actually should be detached, not killed. */
2553 if (target_has_execution)
2556 target_detach (NULL, 0);
2562 /* This is to be called by the open routine before it does
2566 target_preopen (int from_tty)
2570 if (have_inferiors ())
2573 || !have_live_inferiors ()
2574 || query (_("A program is being debugged already. Kill it? ")))
2575 iterate_over_inferiors (dispose_inferior, NULL);
2577 error (_("Program not killed."));
2580 /* Calling target_kill may remove the target from the stack. But if
2581 it doesn't (which seems like a win for UDI), remove it now. */
2582 /* Leave the exec target, though. The user may be switching from a
2583 live process to a core of the same program. */
2584 pop_all_targets_above (file_stratum);
2586 target_pre_inferior (from_tty);
2589 /* Detach a target after doing deferred register stores. */
2592 target_detach (const char *args, int from_tty)
2594 struct target_ops* t;
2596 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2597 /* Don't remove global breakpoints here. They're removed on
2598 disconnection from the target. */
2601 /* If we're in breakpoints-always-inserted mode, have to remove
2602 them before detaching. */
2603 remove_breakpoints_pid (ptid_get_pid (inferior_ptid));
2605 prepare_for_detach ();
2607 current_target.to_detach (¤t_target, args, from_tty);
2609 fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n",
2614 target_disconnect (char *args, int from_tty)
2616 struct target_ops *t;
2618 /* If we're in breakpoints-always-inserted mode or if breakpoints
2619 are global across processes, we have to remove them before
2621 remove_breakpoints ();
2623 for (t = current_target.beneath; t != NULL; t = t->beneath)
2624 if (t->to_disconnect != NULL)
2627 fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n",
2629 t->to_disconnect (t, args, from_tty);
2637 target_wait (ptid_t ptid, struct target_waitstatus *status, int options)
2639 struct target_ops *t;
2640 ptid_t retval = (current_target.to_wait) (¤t_target, ptid,
2645 char *status_string;
2646 char *options_string;
2648 status_string = target_waitstatus_to_string (status);
2649 options_string = target_options_to_string (options);
2650 fprintf_unfiltered (gdb_stdlog,
2651 "target_wait (%d, status, options={%s})"
2653 ptid_get_pid (ptid), options_string,
2654 ptid_get_pid (retval), status_string);
2655 xfree (status_string);
2656 xfree (options_string);
2663 target_pid_to_str (ptid_t ptid)
2665 struct target_ops *t;
2667 for (t = current_target.beneath; t != NULL; t = t->beneath)
2669 if (t->to_pid_to_str != NULL)
2670 return (*t->to_pid_to_str) (t, ptid);
2673 return normal_pid_to_str (ptid);
2677 target_thread_name (struct thread_info *info)
2679 return current_target.to_thread_name (¤t_target, info);
2683 target_resume (ptid_t ptid, int step, enum gdb_signal signal)
2685 struct target_ops *t;
2687 target_dcache_invalidate ();
2689 current_target.to_resume (¤t_target, ptid, step, signal);
2691 fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n",
2692 ptid_get_pid (ptid),
2693 step ? "step" : "continue",
2694 gdb_signal_to_name (signal));
2696 registers_changed_ptid (ptid);
2697 set_executing (ptid, 1);
2698 set_running (ptid, 1);
2699 clear_inline_frame_state (ptid);
2703 target_pass_signals (int numsigs, unsigned char *pass_signals)
2705 struct target_ops *t;
2707 for (t = current_target.beneath; t != NULL; t = t->beneath)
2709 if (t->to_pass_signals != NULL)
2715 fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {",
2718 for (i = 0; i < numsigs; i++)
2719 if (pass_signals[i])
2720 fprintf_unfiltered (gdb_stdlog, " %s",
2721 gdb_signal_to_name (i));
2723 fprintf_unfiltered (gdb_stdlog, " })\n");
2726 (*t->to_pass_signals) (t, numsigs, pass_signals);
2733 target_program_signals (int numsigs, unsigned char *program_signals)
2735 struct target_ops *t;
2737 for (t = current_target.beneath; t != NULL; t = t->beneath)
2739 if (t->to_program_signals != NULL)
2745 fprintf_unfiltered (gdb_stdlog, "target_program_signals (%d, {",
2748 for (i = 0; i < numsigs; i++)
2749 if (program_signals[i])
2750 fprintf_unfiltered (gdb_stdlog, " %s",
2751 gdb_signal_to_name (i));
2753 fprintf_unfiltered (gdb_stdlog, " })\n");
2756 (*t->to_program_signals) (t, numsigs, program_signals);
2762 /* Look through the list of possible targets for a target that can
2766 target_follow_fork (int follow_child, int detach_fork)
2768 struct target_ops *t;
2770 for (t = current_target.beneath; t != NULL; t = t->beneath)
2772 if (t->to_follow_fork != NULL)
2774 int retval = t->to_follow_fork (t, follow_child, detach_fork);
2777 fprintf_unfiltered (gdb_stdlog,
2778 "target_follow_fork (%d, %d) = %d\n",
2779 follow_child, detach_fork, retval);
2784 /* Some target returned a fork event, but did not know how to follow it. */
2785 internal_error (__FILE__, __LINE__,
2786 _("could not find a target to follow fork"));
2790 target_mourn_inferior (void)
2792 struct target_ops *t;
2794 for (t = current_target.beneath; t != NULL; t = t->beneath)
2796 if (t->to_mourn_inferior != NULL)
2798 t->to_mourn_inferior (t);
2800 fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n");
2802 /* We no longer need to keep handles on any of the object files.
2803 Make sure to release them to avoid unnecessarily locking any
2804 of them while we're not actually debugging. */
2805 bfd_cache_close_all ();
2811 internal_error (__FILE__, __LINE__,
2812 _("could not find a target to follow mourn inferior"));
2815 /* Look for a target which can describe architectural features, starting
2816 from TARGET. If we find one, return its description. */
2818 const struct target_desc *
2819 target_read_description (struct target_ops *target)
2821 struct target_ops *t;
2823 for (t = target; t != NULL; t = t->beneath)
2824 if (t->to_read_description != NULL)
2826 const struct target_desc *tdesc;
2828 tdesc = t->to_read_description (t);
2836 /* The default implementation of to_search_memory.
2837 This implements a basic search of memory, reading target memory and
2838 performing the search here (as opposed to performing the search in on the
2839 target side with, for example, gdbserver). */
2842 simple_search_memory (struct target_ops *ops,
2843 CORE_ADDR start_addr, ULONGEST search_space_len,
2844 const gdb_byte *pattern, ULONGEST pattern_len,
2845 CORE_ADDR *found_addrp)
2847 /* NOTE: also defined in find.c testcase. */
2848 #define SEARCH_CHUNK_SIZE 16000
2849 const unsigned chunk_size = SEARCH_CHUNK_SIZE;
2850 /* Buffer to hold memory contents for searching. */
2851 gdb_byte *search_buf;
2852 unsigned search_buf_size;
2853 struct cleanup *old_cleanups;
2855 search_buf_size = chunk_size + pattern_len - 1;
2857 /* No point in trying to allocate a buffer larger than the search space. */
2858 if (search_space_len < search_buf_size)
2859 search_buf_size = search_space_len;
2861 search_buf = malloc (search_buf_size);
2862 if (search_buf == NULL)
2863 error (_("Unable to allocate memory to perform the search."));
2864 old_cleanups = make_cleanup (free_current_contents, &search_buf);
2866 /* Prime the search buffer. */
2868 if (target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2869 search_buf, start_addr, search_buf_size) != search_buf_size)
2871 warning (_("Unable to access %s bytes of target "
2872 "memory at %s, halting search."),
2873 pulongest (search_buf_size), hex_string (start_addr));
2874 do_cleanups (old_cleanups);
2878 /* Perform the search.
2880 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2881 When we've scanned N bytes we copy the trailing bytes to the start and
2882 read in another N bytes. */
2884 while (search_space_len >= pattern_len)
2886 gdb_byte *found_ptr;
2887 unsigned nr_search_bytes = min (search_space_len, search_buf_size);
2889 found_ptr = memmem (search_buf, nr_search_bytes,
2890 pattern, pattern_len);
2892 if (found_ptr != NULL)
2894 CORE_ADDR found_addr = start_addr + (found_ptr - search_buf);
2896 *found_addrp = found_addr;
2897 do_cleanups (old_cleanups);
2901 /* Not found in this chunk, skip to next chunk. */
2903 /* Don't let search_space_len wrap here, it's unsigned. */
2904 if (search_space_len >= chunk_size)
2905 search_space_len -= chunk_size;
2907 search_space_len = 0;
2909 if (search_space_len >= pattern_len)
2911 unsigned keep_len = search_buf_size - chunk_size;
2912 CORE_ADDR read_addr = start_addr + chunk_size + keep_len;
2915 /* Copy the trailing part of the previous iteration to the front
2916 of the buffer for the next iteration. */
2917 gdb_assert (keep_len == pattern_len - 1);
2918 memcpy (search_buf, search_buf + chunk_size, keep_len);
2920 nr_to_read = min (search_space_len - keep_len, chunk_size);
2922 if (target_read (ops, TARGET_OBJECT_MEMORY, NULL,
2923 search_buf + keep_len, read_addr,
2924 nr_to_read) != nr_to_read)
2926 warning (_("Unable to access %s bytes of target "
2927 "memory at %s, halting search."),
2928 plongest (nr_to_read),
2929 hex_string (read_addr));
2930 do_cleanups (old_cleanups);
2934 start_addr += chunk_size;
2940 do_cleanups (old_cleanups);
2944 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2945 sequence of bytes in PATTERN with length PATTERN_LEN.
2947 The result is 1 if found, 0 if not found, and -1 if there was an error
2948 requiring halting of the search (e.g. memory read error).
2949 If the pattern is found the address is recorded in FOUND_ADDRP. */
2952 target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len,
2953 const gdb_byte *pattern, ULONGEST pattern_len,
2954 CORE_ADDR *found_addrp)
2956 struct target_ops *t;
2959 /* We don't use INHERIT to set current_target.to_search_memory,
2960 so we have to scan the target stack and handle targetdebug
2964 fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n",
2965 hex_string (start_addr));
2967 for (t = current_target.beneath; t != NULL; t = t->beneath)
2968 if (t->to_search_memory != NULL)
2973 found = t->to_search_memory (t, start_addr, search_space_len,
2974 pattern, pattern_len, found_addrp);
2978 /* If a special version of to_search_memory isn't available, use the
2980 found = simple_search_memory (current_target.beneath,
2981 start_addr, search_space_len,
2982 pattern, pattern_len, found_addrp);
2986 fprintf_unfiltered (gdb_stdlog, " = %d\n", found);
2991 /* Look through the currently pushed targets. If none of them will
2992 be able to restart the currently running process, issue an error
2996 target_require_runnable (void)
2998 struct target_ops *t;
3000 for (t = target_stack; t != NULL; t = t->beneath)
3002 /* If this target knows how to create a new program, then
3003 assume we will still be able to after killing the current
3004 one. Either killing and mourning will not pop T, or else
3005 find_default_run_target will find it again. */
3006 if (t->to_create_inferior != NULL)
3009 /* Do not worry about thread_stratum targets that can not
3010 create inferiors. Assume they will be pushed again if
3011 necessary, and continue to the process_stratum. */
3012 if (t->to_stratum == thread_stratum
3013 || t->to_stratum == arch_stratum)
3016 error (_("The \"%s\" target does not support \"run\". "
3017 "Try \"help target\" or \"continue\"."),
3021 /* This function is only called if the target is running. In that
3022 case there should have been a process_stratum target and it
3023 should either know how to create inferiors, or not... */
3024 internal_error (__FILE__, __LINE__, _("No targets found"));
3027 /* Look through the list of possible targets for a target that can
3028 execute a run or attach command without any other data. This is
3029 used to locate the default process stratum.
3031 If DO_MESG is not NULL, the result is always valid (error() is
3032 called for errors); else, return NULL on error. */
3034 static struct target_ops *
3035 find_default_run_target (char *do_mesg)
3037 struct target_ops **t;
3038 struct target_ops *runable = NULL;
3043 for (t = target_structs; t < target_structs + target_struct_size;
3046 if ((*t)->to_can_run && target_can_run (*t))
3056 error (_("Don't know how to %s. Try \"help target\"."), do_mesg);
3065 find_default_attach (struct target_ops *ops, char *args, int from_tty)
3067 struct target_ops *t;
3069 t = find_default_run_target ("attach");
3070 (t->to_attach) (t, args, from_tty);
3075 find_default_create_inferior (struct target_ops *ops,
3076 char *exec_file, char *allargs, char **env,
3079 struct target_ops *t;
3081 t = find_default_run_target ("run");
3082 (t->to_create_inferior) (t, exec_file, allargs, env, from_tty);
3087 find_default_can_async_p (struct target_ops *ignore)
3089 struct target_ops *t;
3091 /* This may be called before the target is pushed on the stack;
3092 look for the default process stratum. If there's none, gdb isn't
3093 configured with a native debugger, and target remote isn't
3095 t = find_default_run_target (NULL);
3096 if (t && t->to_can_async_p != delegate_can_async_p)
3097 return (t->to_can_async_p) (t);
3102 find_default_is_async_p (struct target_ops *ignore)
3104 struct target_ops *t;
3106 /* This may be called before the target is pushed on the stack;
3107 look for the default process stratum. If there's none, gdb isn't
3108 configured with a native debugger, and target remote isn't
3110 t = find_default_run_target (NULL);
3111 if (t && t->to_is_async_p != delegate_is_async_p)
3112 return (t->to_is_async_p) (t);
3117 find_default_supports_non_stop (struct target_ops *self)
3119 struct target_ops *t;
3121 t = find_default_run_target (NULL);
3122 if (t && t->to_supports_non_stop)
3123 return (t->to_supports_non_stop) (t);
3128 target_supports_non_stop (void)
3130 struct target_ops *t;
3132 for (t = ¤t_target; t != NULL; t = t->beneath)
3133 if (t->to_supports_non_stop)
3134 return t->to_supports_non_stop (t);
3139 /* Implement the "info proc" command. */
3142 target_info_proc (char *args, enum info_proc_what what)
3144 struct target_ops *t;
3146 /* If we're already connected to something that can get us OS
3147 related data, use it. Otherwise, try using the native
3149 if (current_target.to_stratum >= process_stratum)
3150 t = current_target.beneath;
3152 t = find_default_run_target (NULL);
3154 for (; t != NULL; t = t->beneath)
3156 if (t->to_info_proc != NULL)
3158 t->to_info_proc (t, args, what);
3161 fprintf_unfiltered (gdb_stdlog,
3162 "target_info_proc (\"%s\", %d)\n", args, what);
3172 find_default_supports_disable_randomization (struct target_ops *self)
3174 struct target_ops *t;
3176 t = find_default_run_target (NULL);
3177 if (t && t->to_supports_disable_randomization)
3178 return (t->to_supports_disable_randomization) (t);
3183 target_supports_disable_randomization (void)
3185 struct target_ops *t;
3187 for (t = ¤t_target; t != NULL; t = t->beneath)
3188 if (t->to_supports_disable_randomization)
3189 return t->to_supports_disable_randomization (t);
3195 target_get_osdata (const char *type)
3197 struct target_ops *t;
3199 /* If we're already connected to something that can get us OS
3200 related data, use it. Otherwise, try using the native
3202 if (current_target.to_stratum >= process_stratum)
3203 t = current_target.beneath;
3205 t = find_default_run_target ("get OS data");
3210 return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type);
3213 /* Determine the current address space of thread PTID. */
3215 struct address_space *
3216 target_thread_address_space (ptid_t ptid)
3218 struct address_space *aspace;
3219 struct inferior *inf;
3220 struct target_ops *t;
3222 for (t = current_target.beneath; t != NULL; t = t->beneath)
3224 if (t->to_thread_address_space != NULL)
3226 aspace = t->to_thread_address_space (t, ptid);
3227 gdb_assert (aspace);
3230 fprintf_unfiltered (gdb_stdlog,
3231 "target_thread_address_space (%s) = %d\n",
3232 target_pid_to_str (ptid),
3233 address_space_num (aspace));
3238 /* Fall-back to the "main" address space of the inferior. */
3239 inf = find_inferior_pid (ptid_get_pid (ptid));
3241 if (inf == NULL || inf->aspace == NULL)
3242 internal_error (__FILE__, __LINE__,
3243 _("Can't determine the current "
3244 "address space of thread %s\n"),
3245 target_pid_to_str (ptid));
3251 /* Target file operations. */
3253 static struct target_ops *
3254 default_fileio_target (void)
3256 /* If we're already connected to something that can perform
3257 file I/O, use it. Otherwise, try using the native target. */
3258 if (current_target.to_stratum >= process_stratum)
3259 return current_target.beneath;
3261 return find_default_run_target ("file I/O");
3264 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3265 target file descriptor, or -1 if an error occurs (and set
3268 target_fileio_open (const char *filename, int flags, int mode,
3271 struct target_ops *t;
3273 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3275 if (t->to_fileio_open != NULL)
3277 int fd = t->to_fileio_open (t, filename, flags, mode, target_errno);
3280 fprintf_unfiltered (gdb_stdlog,
3281 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3282 filename, flags, mode,
3283 fd, fd != -1 ? 0 : *target_errno);
3288 *target_errno = FILEIO_ENOSYS;
3292 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3293 Return the number of bytes written, or -1 if an error occurs
3294 (and set *TARGET_ERRNO). */
3296 target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len,
3297 ULONGEST offset, int *target_errno)
3299 struct target_ops *t;
3301 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3303 if (t->to_fileio_pwrite != NULL)
3305 int ret = t->to_fileio_pwrite (t, fd, write_buf, len, offset,
3309 fprintf_unfiltered (gdb_stdlog,
3310 "target_fileio_pwrite (%d,...,%d,%s) "
3312 fd, len, pulongest (offset),
3313 ret, ret != -1 ? 0 : *target_errno);
3318 *target_errno = FILEIO_ENOSYS;
3322 /* Read up to LEN bytes FD on the target into READ_BUF.
3323 Return the number of bytes read, or -1 if an error occurs
3324 (and set *TARGET_ERRNO). */
3326 target_fileio_pread (int fd, gdb_byte *read_buf, int len,
3327 ULONGEST offset, int *target_errno)
3329 struct target_ops *t;
3331 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3333 if (t->to_fileio_pread != NULL)
3335 int ret = t->to_fileio_pread (t, fd, read_buf, len, offset,
3339 fprintf_unfiltered (gdb_stdlog,
3340 "target_fileio_pread (%d,...,%d,%s) "
3342 fd, len, pulongest (offset),
3343 ret, ret != -1 ? 0 : *target_errno);
3348 *target_errno = FILEIO_ENOSYS;
3352 /* Close FD on the target. Return 0, or -1 if an error occurs
3353 (and set *TARGET_ERRNO). */
3355 target_fileio_close (int fd, int *target_errno)
3357 struct target_ops *t;
3359 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3361 if (t->to_fileio_close != NULL)
3363 int ret = t->to_fileio_close (t, fd, target_errno);
3366 fprintf_unfiltered (gdb_stdlog,
3367 "target_fileio_close (%d) = %d (%d)\n",
3368 fd, ret, ret != -1 ? 0 : *target_errno);
3373 *target_errno = FILEIO_ENOSYS;
3377 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3378 occurs (and set *TARGET_ERRNO). */
3380 target_fileio_unlink (const char *filename, int *target_errno)
3382 struct target_ops *t;
3384 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3386 if (t->to_fileio_unlink != NULL)
3388 int ret = t->to_fileio_unlink (t, filename, target_errno);
3391 fprintf_unfiltered (gdb_stdlog,
3392 "target_fileio_unlink (%s) = %d (%d)\n",
3393 filename, ret, ret != -1 ? 0 : *target_errno);
3398 *target_errno = FILEIO_ENOSYS;
3402 /* Read value of symbolic link FILENAME on the target. Return a
3403 null-terminated string allocated via xmalloc, or NULL if an error
3404 occurs (and set *TARGET_ERRNO). */
3406 target_fileio_readlink (const char *filename, int *target_errno)
3408 struct target_ops *t;
3410 for (t = default_fileio_target (); t != NULL; t = t->beneath)
3412 if (t->to_fileio_readlink != NULL)
3414 char *ret = t->to_fileio_readlink (t, filename, target_errno);
3417 fprintf_unfiltered (gdb_stdlog,
3418 "target_fileio_readlink (%s) = %s (%d)\n",
3419 filename, ret? ret : "(nil)",
3420 ret? 0 : *target_errno);
3425 *target_errno = FILEIO_ENOSYS;
3430 target_fileio_close_cleanup (void *opaque)
3432 int fd = *(int *) opaque;
3435 target_fileio_close (fd, &target_errno);
3438 /* Read target file FILENAME. Store the result in *BUF_P and
3439 return the size of the transferred data. PADDING additional bytes are
3440 available in *BUF_P. This is a helper function for
3441 target_fileio_read_alloc; see the declaration of that function for more
3445 target_fileio_read_alloc_1 (const char *filename,
3446 gdb_byte **buf_p, int padding)
3448 struct cleanup *close_cleanup;
3449 size_t buf_alloc, buf_pos;
3455 fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno);
3459 close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd);
3461 /* Start by reading up to 4K at a time. The target will throttle
3462 this number down if necessary. */
3464 buf = xmalloc (buf_alloc);
3468 n = target_fileio_pread (fd, &buf[buf_pos],
3469 buf_alloc - buf_pos - padding, buf_pos,
3473 /* An error occurred. */
3474 do_cleanups (close_cleanup);
3480 /* Read all there was. */
3481 do_cleanups (close_cleanup);
3491 /* If the buffer is filling up, expand it. */
3492 if (buf_alloc < buf_pos * 2)
3495 buf = xrealloc (buf, buf_alloc);
3502 /* Read target file FILENAME. Store the result in *BUF_P and return
3503 the size of the transferred data. See the declaration in "target.h"
3504 function for more information about the return value. */
3507 target_fileio_read_alloc (const char *filename, gdb_byte **buf_p)
3509 return target_fileio_read_alloc_1 (filename, buf_p, 0);
3512 /* Read target file FILENAME. The result is NUL-terminated and
3513 returned as a string, allocated using xmalloc. If an error occurs
3514 or the transfer is unsupported, NULL is returned. Empty objects
3515 are returned as allocated but empty strings. A warning is issued
3516 if the result contains any embedded NUL bytes. */
3519 target_fileio_read_stralloc (const char *filename)
3523 LONGEST i, transferred;
3525 transferred = target_fileio_read_alloc_1 (filename, &buffer, 1);
3526 bufstr = (char *) buffer;
3528 if (transferred < 0)
3531 if (transferred == 0)
3532 return xstrdup ("");
3534 bufstr[transferred] = 0;
3536 /* Check for embedded NUL bytes; but allow trailing NULs. */
3537 for (i = strlen (bufstr); i < transferred; i++)
3540 warning (_("target file %s "
3541 "contained unexpected null characters"),
3551 default_region_ok_for_hw_watchpoint (struct target_ops *self,
3552 CORE_ADDR addr, int len)
3554 return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT);
3558 default_watchpoint_addr_within_range (struct target_ops *target,
3560 CORE_ADDR start, int length)
3562 return addr >= start && addr < start + length;
3565 static struct gdbarch *
3566 default_thread_architecture (struct target_ops *ops, ptid_t ptid)
3568 return target_gdbarch ();
3578 return_minus_one (void)
3590 * Find the next target down the stack from the specified target.
3594 find_target_beneath (struct target_ops *t)
3602 find_target_at (enum strata stratum)
3604 struct target_ops *t;
3606 for (t = current_target.beneath; t != NULL; t = t->beneath)
3607 if (t->to_stratum == stratum)
3614 /* The inferior process has died. Long live the inferior! */
3617 generic_mourn_inferior (void)
3621 ptid = inferior_ptid;
3622 inferior_ptid = null_ptid;
3624 /* Mark breakpoints uninserted in case something tries to delete a
3625 breakpoint while we delete the inferior's threads (which would
3626 fail, since the inferior is long gone). */
3627 mark_breakpoints_out ();
3629 if (!ptid_equal (ptid, null_ptid))
3631 int pid = ptid_get_pid (ptid);
3632 exit_inferior (pid);
3635 /* Note this wipes step-resume breakpoints, so needs to be done
3636 after exit_inferior, which ends up referencing the step-resume
3637 breakpoints through clear_thread_inferior_resources. */
3638 breakpoint_init_inferior (inf_exited);
3640 registers_changed ();
3642 reopen_exec_file ();
3643 reinit_frame_cache ();
3645 if (deprecated_detach_hook)
3646 deprecated_detach_hook ();
3649 /* Convert a normal process ID to a string. Returns the string in a
3653 normal_pid_to_str (ptid_t ptid)
3655 static char buf[32];
3657 xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid));
3662 dummy_pid_to_str (struct target_ops *ops, ptid_t ptid)
3664 return normal_pid_to_str (ptid);
3667 /* Error-catcher for target_find_memory_regions. */
3669 dummy_find_memory_regions (struct target_ops *self,
3670 find_memory_region_ftype ignore1, void *ignore2)
3672 error (_("Command not implemented for this target."));
3676 /* Error-catcher for target_make_corefile_notes. */
3678 dummy_make_corefile_notes (struct target_ops *self,
3679 bfd *ignore1, int *ignore2)
3681 error (_("Command not implemented for this target."));
3685 /* Set up the handful of non-empty slots needed by the dummy target
3689 init_dummy_target (void)
3691 dummy_target.to_shortname = "None";
3692 dummy_target.to_longname = "None";
3693 dummy_target.to_doc = "";
3694 dummy_target.to_create_inferior = find_default_create_inferior;
3695 dummy_target.to_supports_non_stop = find_default_supports_non_stop;
3696 dummy_target.to_supports_disable_randomization
3697 = find_default_supports_disable_randomization;
3698 dummy_target.to_pid_to_str = dummy_pid_to_str;
3699 dummy_target.to_stratum = dummy_stratum;
3700 dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero;
3701 dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero;
3702 dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero;
3703 dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero;
3704 dummy_target.to_has_execution
3705 = (int (*) (struct target_ops *, ptid_t)) return_zero;
3706 dummy_target.to_magic = OPS_MAGIC;
3708 install_dummy_methods (&dummy_target);
3712 debug_to_open (char *args, int from_tty)
3714 debug_target.to_open (args, from_tty);
3716 fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty);
3720 target_close (struct target_ops *targ)
3722 gdb_assert (!target_is_pushed (targ));
3724 if (targ->to_xclose != NULL)
3725 targ->to_xclose (targ);
3726 else if (targ->to_close != NULL)
3727 targ->to_close (targ);
3730 fprintf_unfiltered (gdb_stdlog, "target_close ()\n");
3734 target_attach (char *args, int from_tty)
3736 current_target.to_attach (¤t_target, args, from_tty);
3738 fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n",
3743 target_thread_alive (ptid_t ptid)
3745 struct target_ops *t;
3747 for (t = current_target.beneath; t != NULL; t = t->beneath)
3749 if (t->to_thread_alive != NULL)
3753 retval = t->to_thread_alive (t, ptid);
3755 fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n",
3756 ptid_get_pid (ptid), retval);
3766 target_find_new_threads (void)
3768 struct target_ops *t;
3770 for (t = current_target.beneath; t != NULL; t = t->beneath)
3772 if (t->to_find_new_threads != NULL)
3774 t->to_find_new_threads (t);
3776 fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n");
3784 target_stop (ptid_t ptid)
3788 warning (_("May not interrupt or stop the target, ignoring attempt"));
3792 (*current_target.to_stop) (¤t_target, ptid);
3796 debug_to_post_attach (struct target_ops *self, int pid)
3798 debug_target.to_post_attach (&debug_target, pid);
3800 fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid);
3803 /* Concatenate ELEM to LIST, a comma separate list, and return the
3804 result. The LIST incoming argument is released. */
3807 str_comma_list_concat_elem (char *list, const char *elem)
3810 return xstrdup (elem);
3812 return reconcat (list, list, ", ", elem, (char *) NULL);
3815 /* Helper for target_options_to_string. If OPT is present in
3816 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3817 Returns the new resulting string. OPT is removed from
3821 do_option (int *target_options, char *ret,
3822 int opt, char *opt_str)
3824 if ((*target_options & opt) != 0)
3826 ret = str_comma_list_concat_elem (ret, opt_str);
3827 *target_options &= ~opt;
3834 target_options_to_string (int target_options)
3838 #define DO_TARG_OPTION(OPT) \
3839 ret = do_option (&target_options, ret, OPT, #OPT)
3841 DO_TARG_OPTION (TARGET_WNOHANG);
3843 if (target_options != 0)
3844 ret = str_comma_list_concat_elem (ret, "unknown???");
3852 debug_print_register (const char * func,
3853 struct regcache *regcache, int regno)
3855 struct gdbarch *gdbarch = get_regcache_arch (regcache);
3857 fprintf_unfiltered (gdb_stdlog, "%s ", func);
3858 if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)
3859 && gdbarch_register_name (gdbarch, regno) != NULL
3860 && gdbarch_register_name (gdbarch, regno)[0] != '\0')
3861 fprintf_unfiltered (gdb_stdlog, "(%s)",
3862 gdbarch_register_name (gdbarch, regno));
3864 fprintf_unfiltered (gdb_stdlog, "(%d)", regno);
3865 if (regno >= 0 && regno < gdbarch_num_regs (gdbarch))
3867 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
3868 int i, size = register_size (gdbarch, regno);
3869 gdb_byte buf[MAX_REGISTER_SIZE];
3871 regcache_raw_collect (regcache, regno, buf);
3872 fprintf_unfiltered (gdb_stdlog, " = ");
3873 for (i = 0; i < size; i++)
3875 fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]);
3877 if (size <= sizeof (LONGEST))
3879 ULONGEST val = extract_unsigned_integer (buf, size, byte_order);
3881 fprintf_unfiltered (gdb_stdlog, " %s %s",
3882 core_addr_to_string_nz (val), plongest (val));
3885 fprintf_unfiltered (gdb_stdlog, "\n");
3889 target_fetch_registers (struct regcache *regcache, int regno)
3891 struct target_ops *t;
3893 for (t = current_target.beneath; t != NULL; t = t->beneath)
3895 if (t->to_fetch_registers != NULL)
3897 t->to_fetch_registers (t, regcache, regno);
3899 debug_print_register ("target_fetch_registers", regcache, regno);
3906 target_store_registers (struct regcache *regcache, int regno)
3908 struct target_ops *t;
3910 if (!may_write_registers)
3911 error (_("Writing to registers is not allowed (regno %d)"), regno);
3913 current_target.to_store_registers (¤t_target, regcache, regno);
3916 debug_print_register ("target_store_registers", regcache, regno);
3921 target_core_of_thread (ptid_t ptid)
3923 struct target_ops *t;
3925 for (t = current_target.beneath; t != NULL; t = t->beneath)
3927 if (t->to_core_of_thread != NULL)
3929 int retval = t->to_core_of_thread (t, ptid);
3932 fprintf_unfiltered (gdb_stdlog,
3933 "target_core_of_thread (%d) = %d\n",
3934 ptid_get_pid (ptid), retval);
3943 target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size)
3945 struct target_ops *t;
3947 for (t = current_target.beneath; t != NULL; t = t->beneath)
3949 if (t->to_verify_memory != NULL)
3951 int retval = t->to_verify_memory (t, data, memaddr, size);
3954 fprintf_unfiltered (gdb_stdlog,
3955 "target_verify_memory (%s, %s) = %d\n",
3956 paddress (target_gdbarch (), memaddr),
3966 /* The documentation for this function is in its prototype declaration in
3970 target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw)
3972 struct target_ops *t;
3974 for (t = current_target.beneath; t != NULL; t = t->beneath)
3975 if (t->to_insert_mask_watchpoint != NULL)
3979 ret = t->to_insert_mask_watchpoint (t, addr, mask, rw);
3982 fprintf_unfiltered (gdb_stdlog, "\
3983 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3984 core_addr_to_string (addr),
3985 core_addr_to_string (mask), rw, ret);
3993 /* The documentation for this function is in its prototype declaration in
3997 target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw)
3999 struct target_ops *t;
4001 for (t = current_target.beneath; t != NULL; t = t->beneath)
4002 if (t->to_remove_mask_watchpoint != NULL)
4006 ret = t->to_remove_mask_watchpoint (t, addr, mask, rw);
4009 fprintf_unfiltered (gdb_stdlog, "\
4010 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
4011 core_addr_to_string (addr),
4012 core_addr_to_string (mask), rw, ret);
4020 /* The documentation for this function is in its prototype declaration
4024 target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask)
4026 struct target_ops *t;
4028 for (t = current_target.beneath; t != NULL; t = t->beneath)
4029 if (t->to_masked_watch_num_registers != NULL)
4030 return t->to_masked_watch_num_registers (t, addr, mask);
4035 /* The documentation for this function is in its prototype declaration
4039 target_ranged_break_num_registers (void)
4041 struct target_ops *t;
4043 for (t = current_target.beneath; t != NULL; t = t->beneath)
4044 if (t->to_ranged_break_num_registers != NULL)
4045 return t->to_ranged_break_num_registers (t);
4052 struct btrace_target_info *
4053 target_enable_btrace (ptid_t ptid)
4055 struct target_ops *t;
4057 for (t = current_target.beneath; t != NULL; t = t->beneath)
4058 if (t->to_enable_btrace != NULL)
4059 return t->to_enable_btrace (t, ptid);
4068 target_disable_btrace (struct btrace_target_info *btinfo)
4070 struct target_ops *t;
4072 for (t = current_target.beneath; t != NULL; t = t->beneath)
4073 if (t->to_disable_btrace != NULL)
4075 t->to_disable_btrace (t, btinfo);
4085 target_teardown_btrace (struct btrace_target_info *btinfo)
4087 struct target_ops *t;
4089 for (t = current_target.beneath; t != NULL; t = t->beneath)
4090 if (t->to_teardown_btrace != NULL)
4092 t->to_teardown_btrace (t, btinfo);
4102 target_read_btrace (VEC (btrace_block_s) **btrace,
4103 struct btrace_target_info *btinfo,
4104 enum btrace_read_type type)
4106 struct target_ops *t;
4108 for (t = current_target.beneath; t != NULL; t = t->beneath)
4109 if (t->to_read_btrace != NULL)
4110 return t->to_read_btrace (t, btrace, btinfo, type);
4113 return BTRACE_ERR_NOT_SUPPORTED;
4119 target_stop_recording (void)
4121 struct target_ops *t;
4123 for (t = current_target.beneath; t != NULL; t = t->beneath)
4124 if (t->to_stop_recording != NULL)
4126 t->to_stop_recording (t);
4130 /* This is optional. */
4136 target_info_record (void)
4138 struct target_ops *t;
4140 for (t = current_target.beneath; t != NULL; t = t->beneath)
4141 if (t->to_info_record != NULL)
4143 t->to_info_record (t);
4153 target_save_record (const char *filename)
4155 struct target_ops *t;
4157 for (t = current_target.beneath; t != NULL; t = t->beneath)
4158 if (t->to_save_record != NULL)
4160 t->to_save_record (t, filename);
4170 target_supports_delete_record (void)
4172 struct target_ops *t;
4174 for (t = current_target.beneath; t != NULL; t = t->beneath)
4175 if (t->to_delete_record != NULL)
4184 target_delete_record (void)
4186 struct target_ops *t;
4188 for (t = current_target.beneath; t != NULL; t = t->beneath)
4189 if (t->to_delete_record != NULL)
4191 t->to_delete_record (t);
4201 target_record_is_replaying (void)
4203 struct target_ops *t;
4205 for (t = current_target.beneath; t != NULL; t = t->beneath)
4206 if (t->to_record_is_replaying != NULL)
4207 return t->to_record_is_replaying (t);
4215 target_goto_record_begin (void)
4217 struct target_ops *t;
4219 for (t = current_target.beneath; t != NULL; t = t->beneath)
4220 if (t->to_goto_record_begin != NULL)
4222 t->to_goto_record_begin (t);
4232 target_goto_record_end (void)
4234 struct target_ops *t;
4236 for (t = current_target.beneath; t != NULL; t = t->beneath)
4237 if (t->to_goto_record_end != NULL)
4239 t->to_goto_record_end (t);
4249 target_goto_record (ULONGEST insn)
4251 struct target_ops *t;
4253 for (t = current_target.beneath; t != NULL; t = t->beneath)
4254 if (t->to_goto_record != NULL)
4256 t->to_goto_record (t, insn);
4266 target_insn_history (int size, int flags)
4268 struct target_ops *t;
4270 for (t = current_target.beneath; t != NULL; t = t->beneath)
4271 if (t->to_insn_history != NULL)
4273 t->to_insn_history (t, size, flags);
4283 target_insn_history_from (ULONGEST from, int size, int flags)
4285 struct target_ops *t;
4287 for (t = current_target.beneath; t != NULL; t = t->beneath)
4288 if (t->to_insn_history_from != NULL)
4290 t->to_insn_history_from (t, from, size, flags);
4300 target_insn_history_range (ULONGEST begin, ULONGEST end, int flags)
4302 struct target_ops *t;
4304 for (t = current_target.beneath; t != NULL; t = t->beneath)
4305 if (t->to_insn_history_range != NULL)
4307 t->to_insn_history_range (t, begin, end, flags);
4317 target_call_history (int size, int flags)
4319 struct target_ops *t;
4321 for (t = current_target.beneath; t != NULL; t = t->beneath)
4322 if (t->to_call_history != NULL)
4324 t->to_call_history (t, size, flags);
4334 target_call_history_from (ULONGEST begin, int size, int flags)
4336 struct target_ops *t;
4338 for (t = current_target.beneath; t != NULL; t = t->beneath)
4339 if (t->to_call_history_from != NULL)
4341 t->to_call_history_from (t, begin, size, flags);
4351 target_call_history_range (ULONGEST begin, ULONGEST end, int flags)
4353 struct target_ops *t;
4355 for (t = current_target.beneath; t != NULL; t = t->beneath)
4356 if (t->to_call_history_range != NULL)
4358 t->to_call_history_range (t, begin, end, flags);
4366 debug_to_prepare_to_store (struct target_ops *self, struct regcache *regcache)
4368 debug_target.to_prepare_to_store (&debug_target, regcache);
4370 fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n");
4375 const struct frame_unwind *
4376 target_get_unwinder (void)
4378 struct target_ops *t;
4380 for (t = current_target.beneath; t != NULL; t = t->beneath)
4381 if (t->to_get_unwinder != NULL)
4382 return t->to_get_unwinder;
4389 const struct frame_unwind *
4390 target_get_tailcall_unwinder (void)
4392 struct target_ops *t;
4394 for (t = current_target.beneath; t != NULL; t = t->beneath)
4395 if (t->to_get_tailcall_unwinder != NULL)
4396 return t->to_get_tailcall_unwinder;
4404 forward_target_decr_pc_after_break (struct target_ops *ops,
4405 struct gdbarch *gdbarch)
4407 for (; ops != NULL; ops = ops->beneath)
4408 if (ops->to_decr_pc_after_break != NULL)
4409 return ops->to_decr_pc_after_break (ops, gdbarch);
4411 return gdbarch_decr_pc_after_break (gdbarch);
4417 target_decr_pc_after_break (struct gdbarch *gdbarch)
4419 return forward_target_decr_pc_after_break (current_target.beneath, gdbarch);
4423 deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len,
4424 int write, struct mem_attrib *attrib,
4425 struct target_ops *target)
4429 retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write,
4432 fprintf_unfiltered (gdb_stdlog,
4433 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4434 paddress (target_gdbarch (), memaddr), len,
4435 write ? "write" : "read", retval);
4441 fputs_unfiltered (", bytes =", gdb_stdlog);
4442 for (i = 0; i < retval; i++)
4444 if ((((intptr_t) &(myaddr[i])) & 0xf) == 0)
4446 if (targetdebug < 2 && i > 0)
4448 fprintf_unfiltered (gdb_stdlog, " ...");
4451 fprintf_unfiltered (gdb_stdlog, "\n");
4454 fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
4458 fputc_unfiltered ('\n', gdb_stdlog);
4464 debug_to_files_info (struct target_ops *target)
4466 debug_target.to_files_info (target);
4468 fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n");
4472 debug_to_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch,
4473 struct bp_target_info *bp_tgt)
4477 retval = debug_target.to_insert_breakpoint (&debug_target, gdbarch, bp_tgt);
4479 fprintf_unfiltered (gdb_stdlog,
4480 "target_insert_breakpoint (%s, xxx) = %ld\n",
4481 core_addr_to_string (bp_tgt->placed_address),
4482 (unsigned long) retval);
4487 debug_to_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch,
4488 struct bp_target_info *bp_tgt)
4492 retval = debug_target.to_remove_breakpoint (&debug_target, gdbarch, bp_tgt);
4494 fprintf_unfiltered (gdb_stdlog,
4495 "target_remove_breakpoint (%s, xxx) = %ld\n",
4496 core_addr_to_string (bp_tgt->placed_address),
4497 (unsigned long) retval);
4502 debug_to_can_use_hw_breakpoint (struct target_ops *self,
4503 int type, int cnt, int from_tty)
4507 retval = debug_target.to_can_use_hw_breakpoint (&debug_target,
4508 type, cnt, from_tty);
4510 fprintf_unfiltered (gdb_stdlog,
4511 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4512 (unsigned long) type,
4513 (unsigned long) cnt,
4514 (unsigned long) from_tty,
4515 (unsigned long) retval);
4520 debug_to_region_ok_for_hw_watchpoint (struct target_ops *self,
4521 CORE_ADDR addr, int len)
4525 retval = debug_target.to_region_ok_for_hw_watchpoint (&debug_target,
4528 fprintf_unfiltered (gdb_stdlog,
4529 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4530 core_addr_to_string (addr), (unsigned long) len,
4531 core_addr_to_string (retval));
4536 debug_to_can_accel_watchpoint_condition (struct target_ops *self,
4537 CORE_ADDR addr, int len, int rw,
4538 struct expression *cond)
4542 retval = debug_target.to_can_accel_watchpoint_condition (&debug_target,
4546 fprintf_unfiltered (gdb_stdlog,
4547 "target_can_accel_watchpoint_condition "
4548 "(%s, %d, %d, %s) = %ld\n",
4549 core_addr_to_string (addr), len, rw,
4550 host_address_to_string (cond), (unsigned long) retval);
4555 debug_to_stopped_by_watchpoint (struct target_ops *ops)
4559 retval = debug_target.to_stopped_by_watchpoint (&debug_target);
4561 fprintf_unfiltered (gdb_stdlog,
4562 "target_stopped_by_watchpoint () = %ld\n",
4563 (unsigned long) retval);
4568 debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr)
4572 retval = debug_target.to_stopped_data_address (target, addr);
4574 fprintf_unfiltered (gdb_stdlog,
4575 "target_stopped_data_address ([%s]) = %ld\n",
4576 core_addr_to_string (*addr),
4577 (unsigned long)retval);
4582 debug_to_watchpoint_addr_within_range (struct target_ops *target,
4584 CORE_ADDR start, int length)
4588 retval = debug_target.to_watchpoint_addr_within_range (target, addr,
4591 fprintf_filtered (gdb_stdlog,
4592 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4593 core_addr_to_string (addr), core_addr_to_string (start),
4599 debug_to_insert_hw_breakpoint (struct target_ops *self,
4600 struct gdbarch *gdbarch,
4601 struct bp_target_info *bp_tgt)
4605 retval = debug_target.to_insert_hw_breakpoint (&debug_target,
4608 fprintf_unfiltered (gdb_stdlog,
4609 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4610 core_addr_to_string (bp_tgt->placed_address),
4611 (unsigned long) retval);
4616 debug_to_remove_hw_breakpoint (struct target_ops *self,
4617 struct gdbarch *gdbarch,
4618 struct bp_target_info *bp_tgt)
4622 retval = debug_target.to_remove_hw_breakpoint (&debug_target,
4625 fprintf_unfiltered (gdb_stdlog,
4626 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4627 core_addr_to_string (bp_tgt->placed_address),
4628 (unsigned long) retval);
4633 debug_to_insert_watchpoint (struct target_ops *self,
4634 CORE_ADDR addr, int len, int type,
4635 struct expression *cond)
4639 retval = debug_target.to_insert_watchpoint (&debug_target,
4640 addr, len, type, cond);
4642 fprintf_unfiltered (gdb_stdlog,
4643 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4644 core_addr_to_string (addr), len, type,
4645 host_address_to_string (cond), (unsigned long) retval);
4650 debug_to_remove_watchpoint (struct target_ops *self,
4651 CORE_ADDR addr, int len, int type,
4652 struct expression *cond)
4656 retval = debug_target.to_remove_watchpoint (&debug_target,
4657 addr, len, type, cond);
4659 fprintf_unfiltered (gdb_stdlog,
4660 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4661 core_addr_to_string (addr), len, type,
4662 host_address_to_string (cond), (unsigned long) retval);
4667 debug_to_terminal_init (struct target_ops *self)
4669 debug_target.to_terminal_init (&debug_target);
4671 fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n");
4675 debug_to_terminal_inferior (struct target_ops *self)
4677 debug_target.to_terminal_inferior (&debug_target);
4679 fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n");
4683 debug_to_terminal_ours_for_output (struct target_ops *self)
4685 debug_target.to_terminal_ours_for_output (&debug_target);
4687 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n");
4691 debug_to_terminal_ours (struct target_ops *self)
4693 debug_target.to_terminal_ours (&debug_target);
4695 fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n");
4699 debug_to_terminal_save_ours (struct target_ops *self)
4701 debug_target.to_terminal_save_ours (&debug_target);
4703 fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n");
4707 debug_to_terminal_info (struct target_ops *self,
4708 const char *arg, int from_tty)
4710 debug_target.to_terminal_info (&debug_target, arg, from_tty);
4712 fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg,
4717 debug_to_load (struct target_ops *self, char *args, int from_tty)
4719 debug_target.to_load (&debug_target, args, from_tty);
4721 fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty);
4725 debug_to_post_startup_inferior (struct target_ops *self, ptid_t ptid)
4727 debug_target.to_post_startup_inferior (&debug_target, ptid);
4729 fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n",
4730 ptid_get_pid (ptid));
4734 debug_to_insert_fork_catchpoint (struct target_ops *self, int pid)
4738 retval = debug_target.to_insert_fork_catchpoint (&debug_target, pid);
4740 fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n",
4747 debug_to_remove_fork_catchpoint (struct target_ops *self, int pid)
4751 retval = debug_target.to_remove_fork_catchpoint (&debug_target, pid);
4753 fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n",
4760 debug_to_insert_vfork_catchpoint (struct target_ops *self, int pid)
4764 retval = debug_target.to_insert_vfork_catchpoint (&debug_target, pid);
4766 fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n",
4773 debug_to_remove_vfork_catchpoint (struct target_ops *self, int pid)
4777 retval = debug_target.to_remove_vfork_catchpoint (&debug_target, pid);
4779 fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n",
4786 debug_to_insert_exec_catchpoint (struct target_ops *self, int pid)
4790 retval = debug_target.to_insert_exec_catchpoint (&debug_target, pid);
4792 fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n",
4799 debug_to_remove_exec_catchpoint (struct target_ops *self, int pid)
4803 retval = debug_target.to_remove_exec_catchpoint (&debug_target, pid);
4805 fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n",
4812 debug_to_has_exited (struct target_ops *self,
4813 int pid, int wait_status, int *exit_status)
4817 has_exited = debug_target.to_has_exited (&debug_target,
4818 pid, wait_status, exit_status);
4820 fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n",
4821 pid, wait_status, *exit_status, has_exited);
4827 debug_to_can_run (struct target_ops *self)
4831 retval = debug_target.to_can_run (&debug_target);
4833 fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval);
4838 static struct gdbarch *
4839 debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid)
4841 struct gdbarch *retval;
4843 retval = debug_target.to_thread_architecture (ops, ptid);
4845 fprintf_unfiltered (gdb_stdlog,
4846 "target_thread_architecture (%s) = %s [%s]\n",
4847 target_pid_to_str (ptid),
4848 host_address_to_string (retval),
4849 gdbarch_bfd_arch_info (retval)->printable_name);
4854 debug_to_stop (struct target_ops *self, ptid_t ptid)
4856 debug_target.to_stop (&debug_target, ptid);
4858 fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n",
4859 target_pid_to_str (ptid));
4863 debug_to_rcmd (struct target_ops *self, char *command,
4864 struct ui_file *outbuf)
4866 debug_target.to_rcmd (&debug_target, command, outbuf);
4867 fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command);
4871 debug_to_pid_to_exec_file (struct target_ops *self, int pid)
4875 exec_file = debug_target.to_pid_to_exec_file (&debug_target, pid);
4877 fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n",
4884 setup_target_debug (void)
4886 memcpy (&debug_target, ¤t_target, sizeof debug_target);
4888 current_target.to_open = debug_to_open;
4889 current_target.to_post_attach = debug_to_post_attach;
4890 current_target.to_prepare_to_store = debug_to_prepare_to_store;
4891 current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory;
4892 current_target.to_files_info = debug_to_files_info;
4893 current_target.to_insert_breakpoint = debug_to_insert_breakpoint;
4894 current_target.to_remove_breakpoint = debug_to_remove_breakpoint;
4895 current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint;
4896 current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint;
4897 current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint;
4898 current_target.to_insert_watchpoint = debug_to_insert_watchpoint;
4899 current_target.to_remove_watchpoint = debug_to_remove_watchpoint;
4900 current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint;
4901 current_target.to_stopped_data_address = debug_to_stopped_data_address;
4902 current_target.to_watchpoint_addr_within_range
4903 = debug_to_watchpoint_addr_within_range;
4904 current_target.to_region_ok_for_hw_watchpoint
4905 = debug_to_region_ok_for_hw_watchpoint;
4906 current_target.to_can_accel_watchpoint_condition
4907 = debug_to_can_accel_watchpoint_condition;
4908 current_target.to_terminal_init = debug_to_terminal_init;
4909 current_target.to_terminal_inferior = debug_to_terminal_inferior;
4910 current_target.to_terminal_ours_for_output
4911 = debug_to_terminal_ours_for_output;
4912 current_target.to_terminal_ours = debug_to_terminal_ours;
4913 current_target.to_terminal_save_ours = debug_to_terminal_save_ours;
4914 current_target.to_terminal_info = debug_to_terminal_info;
4915 current_target.to_load = debug_to_load;
4916 current_target.to_post_startup_inferior = debug_to_post_startup_inferior;
4917 current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint;
4918 current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint;
4919 current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint;
4920 current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint;
4921 current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint;
4922 current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint;
4923 current_target.to_has_exited = debug_to_has_exited;
4924 current_target.to_can_run = debug_to_can_run;
4925 current_target.to_stop = debug_to_stop;
4926 current_target.to_rcmd = debug_to_rcmd;
4927 current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file;
4928 current_target.to_thread_architecture = debug_to_thread_architecture;
4932 static char targ_desc[] =
4933 "Names of targets and files being debugged.\nShows the entire \
4934 stack of targets currently in use (including the exec-file,\n\
4935 core-file, and process, if any), as well as the symbol file name.";
4938 default_rcmd (struct target_ops *self, char *command, struct ui_file *output)
4940 error (_("\"monitor\" command not supported by this target."));
4944 do_monitor_command (char *cmd,
4947 target_rcmd (cmd, gdb_stdtarg);
4950 /* Print the name of each layers of our target stack. */
4953 maintenance_print_target_stack (char *cmd, int from_tty)
4955 struct target_ops *t;
4957 printf_filtered (_("The current target stack is:\n"));
4959 for (t = target_stack; t != NULL; t = t->beneath)
4961 printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname);
4965 /* Controls if async mode is permitted. */
4966 int target_async_permitted = 0;
4968 /* The set command writes to this variable. If the inferior is
4969 executing, target_async_permitted is *not* updated. */
4970 static int target_async_permitted_1 = 0;
4973 set_target_async_command (char *args, int from_tty,
4974 struct cmd_list_element *c)
4976 if (have_live_inferiors ())
4978 target_async_permitted_1 = target_async_permitted;
4979 error (_("Cannot change this setting while the inferior is running."));
4982 target_async_permitted = target_async_permitted_1;
4986 show_target_async_command (struct ui_file *file, int from_tty,
4987 struct cmd_list_element *c,
4990 fprintf_filtered (file,
4991 _("Controlling the inferior in "
4992 "asynchronous mode is %s.\n"), value);
4995 /* Temporary copies of permission settings. */
4997 static int may_write_registers_1 = 1;
4998 static int may_write_memory_1 = 1;
4999 static int may_insert_breakpoints_1 = 1;
5000 static int may_insert_tracepoints_1 = 1;
5001 static int may_insert_fast_tracepoints_1 = 1;
5002 static int may_stop_1 = 1;
5004 /* Make the user-set values match the real values again. */
5007 update_target_permissions (void)
5009 may_write_registers_1 = may_write_registers;
5010 may_write_memory_1 = may_write_memory;
5011 may_insert_breakpoints_1 = may_insert_breakpoints;
5012 may_insert_tracepoints_1 = may_insert_tracepoints;
5013 may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints;
5014 may_stop_1 = may_stop;
5017 /* The one function handles (most of) the permission flags in the same
5021 set_target_permissions (char *args, int from_tty,
5022 struct cmd_list_element *c)
5024 if (target_has_execution)
5026 update_target_permissions ();
5027 error (_("Cannot change this setting while the inferior is running."));
5030 /* Make the real values match the user-changed values. */
5031 may_write_registers = may_write_registers_1;
5032 may_insert_breakpoints = may_insert_breakpoints_1;
5033 may_insert_tracepoints = may_insert_tracepoints_1;
5034 may_insert_fast_tracepoints = may_insert_fast_tracepoints_1;
5035 may_stop = may_stop_1;
5036 update_observer_mode ();
5039 /* Set memory write permission independently of observer mode. */
5042 set_write_memory_permission (char *args, int from_tty,
5043 struct cmd_list_element *c)
5045 /* Make the real values match the user-changed values. */
5046 may_write_memory = may_write_memory_1;
5047 update_observer_mode ();
5052 initialize_targets (void)
5054 init_dummy_target ();
5055 push_target (&dummy_target);
5057 add_info ("target", target_info, targ_desc);
5058 add_info ("files", target_info, targ_desc);
5060 add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\
5061 Set target debugging."), _("\
5062 Show target debugging."), _("\
5063 When non-zero, target debugging is enabled. Higher numbers are more\n\
5064 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
5068 &setdebuglist, &showdebuglist);
5070 add_setshow_boolean_cmd ("trust-readonly-sections", class_support,
5071 &trust_readonly, _("\
5072 Set mode for reading from readonly sections."), _("\
5073 Show mode for reading from readonly sections."), _("\
5074 When this mode is on, memory reads from readonly sections (such as .text)\n\
5075 will be read from the object file instead of from the target. This will\n\
5076 result in significant performance improvement for remote targets."),
5078 show_trust_readonly,
5079 &setlist, &showlist);
5081 add_com ("monitor", class_obscure, do_monitor_command,
5082 _("Send a command to the remote monitor (remote targets only)."));
5084 add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack,
5085 _("Print the name of each layer of the internal target stack."),
5086 &maintenanceprintlist);
5088 add_setshow_boolean_cmd ("target-async", no_class,
5089 &target_async_permitted_1, _("\
5090 Set whether gdb controls the inferior in asynchronous mode."), _("\
5091 Show whether gdb controls the inferior in asynchronous mode."), _("\
5092 Tells gdb whether to control the inferior in asynchronous mode."),
5093 set_target_async_command,
5094 show_target_async_command,
5098 add_setshow_boolean_cmd ("may-write-registers", class_support,
5099 &may_write_registers_1, _("\
5100 Set permission to write into registers."), _("\
5101 Show permission to write into registers."), _("\
5102 When this permission is on, GDB may write into the target's registers.\n\
5103 Otherwise, any sort of write attempt will result in an error."),
5104 set_target_permissions, NULL,
5105 &setlist, &showlist);
5107 add_setshow_boolean_cmd ("may-write-memory", class_support,
5108 &may_write_memory_1, _("\
5109 Set permission to write into target memory."), _("\
5110 Show permission to write into target memory."), _("\
5111 When this permission is on, GDB may write into the target's memory.\n\
5112 Otherwise, any sort of write attempt will result in an error."),
5113 set_write_memory_permission, NULL,
5114 &setlist, &showlist);
5116 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support,
5117 &may_insert_breakpoints_1, _("\
5118 Set permission to insert breakpoints in the target."), _("\
5119 Show permission to insert breakpoints in the target."), _("\
5120 When this permission is on, GDB may insert breakpoints in the program.\n\
5121 Otherwise, any sort of insertion attempt will result in an error."),
5122 set_target_permissions, NULL,
5123 &setlist, &showlist);
5125 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support,
5126 &may_insert_tracepoints_1, _("\
5127 Set permission to insert tracepoints in the target."), _("\
5128 Show permission to insert tracepoints in the target."), _("\
5129 When this permission is on, GDB may insert tracepoints in the program.\n\
5130 Otherwise, any sort of insertion attempt will result in an error."),
5131 set_target_permissions, NULL,
5132 &setlist, &showlist);
5134 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support,
5135 &may_insert_fast_tracepoints_1, _("\
5136 Set permission to insert fast tracepoints in the target."), _("\
5137 Show permission to insert fast tracepoints in the target."), _("\
5138 When this permission is on, GDB may insert fast tracepoints.\n\
5139 Otherwise, any sort of insertion attempt will result in an error."),
5140 set_target_permissions, NULL,
5141 &setlist, &showlist);
5143 add_setshow_boolean_cmd ("may-interrupt", class_support,
5145 Set permission to interrupt or signal the target."), _("\
5146 Show permission to interrupt or signal the target."), _("\
5147 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5148 Otherwise, any attempt to interrupt or stop will be ignored."),
5149 set_target_permissions, NULL,
5150 &setlist, &showlist);