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_one (void);
68 static int return_minus_one (void);
70 static void *return_null (void);
72 void target_ignore (void);
74 static void target_command (char *, int);
76 static struct target_ops
*find_default_run_target (char *);
78 static target_xfer_partial_ftype default_xfer_partial
;
80 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
83 static int find_default_can_async_p (struct target_ops
*ignore
);
85 static int find_default_is_async_p (struct target_ops
*ignore
);
87 #include "target-delegates.c"
89 static void init_dummy_target (void);
91 static struct target_ops debug_target
;
93 static void debug_to_open (char *, int);
95 static void debug_to_prepare_to_store (struct target_ops
*self
,
98 static void debug_to_files_info (struct target_ops
*);
100 static int debug_to_insert_breakpoint (struct target_ops
*, struct gdbarch
*,
101 struct bp_target_info
*);
103 static int debug_to_remove_breakpoint (struct target_ops
*, struct gdbarch
*,
104 struct bp_target_info
*);
106 static int debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
109 static int debug_to_insert_hw_breakpoint (struct target_ops
*self
,
111 struct bp_target_info
*);
113 static int debug_to_remove_hw_breakpoint (struct target_ops
*self
,
115 struct bp_target_info
*);
117 static int debug_to_insert_watchpoint (struct target_ops
*self
,
119 struct expression
*);
121 static int debug_to_remove_watchpoint (struct target_ops
*self
,
123 struct expression
*);
125 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
127 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
128 CORE_ADDR
, CORE_ADDR
, int);
130 static int debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
133 static int debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
135 struct expression
*);
137 static void debug_to_terminal_init (struct target_ops
*self
);
139 static void debug_to_terminal_inferior (struct target_ops
*self
);
141 static void debug_to_terminal_ours_for_output (struct target_ops
*self
);
143 static void debug_to_terminal_save_ours (struct target_ops
*self
);
145 static void debug_to_terminal_ours (struct target_ops
*self
);
147 static void debug_to_load (struct target_ops
*self
, char *, int);
149 static int debug_to_can_run (struct target_ops
*self
);
151 static void debug_to_stop (struct target_ops
*self
, ptid_t
);
153 /* Pointer to array of target architecture structures; the size of the
154 array; the current index into the array; the allocated size of the
156 struct target_ops
**target_structs
;
157 unsigned target_struct_size
;
158 unsigned target_struct_allocsize
;
159 #define DEFAULT_ALLOCSIZE 10
161 /* The initial current target, so that there is always a semi-valid
164 static struct target_ops dummy_target
;
166 /* Top of target stack. */
168 static struct target_ops
*target_stack
;
170 /* The target structure we are currently using to talk to a process
171 or file or whatever "inferior" we have. */
173 struct target_ops current_target
;
175 /* Command list for target. */
177 static struct cmd_list_element
*targetlist
= NULL
;
179 /* Nonzero if we should trust readonly sections from the
180 executable when reading memory. */
182 static int trust_readonly
= 0;
184 /* Nonzero if we should show true memory content including
185 memory breakpoint inserted by gdb. */
187 static int show_memory_breakpoints
= 0;
189 /* These globals control whether GDB attempts to perform these
190 operations; they are useful for targets that need to prevent
191 inadvertant disruption, such as in non-stop mode. */
193 int may_write_registers
= 1;
195 int may_write_memory
= 1;
197 int may_insert_breakpoints
= 1;
199 int may_insert_tracepoints
= 1;
201 int may_insert_fast_tracepoints
= 1;
205 /* Non-zero if we want to see trace of target level stuff. */
207 static unsigned int targetdebug
= 0;
209 show_targetdebug (struct ui_file
*file
, int from_tty
,
210 struct cmd_list_element
*c
, const char *value
)
212 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
215 static void setup_target_debug (void);
217 /* The user just typed 'target' without the name of a target. */
220 target_command (char *arg
, int from_tty
)
222 fputs_filtered ("Argument required (target name). Try `help target'\n",
226 /* Default target_has_* methods for process_stratum targets. */
229 default_child_has_all_memory (struct target_ops
*ops
)
231 /* If no inferior selected, then we can't read memory here. */
232 if (ptid_equal (inferior_ptid
, null_ptid
))
239 default_child_has_memory (struct target_ops
*ops
)
241 /* If no inferior selected, then we can't read memory here. */
242 if (ptid_equal (inferior_ptid
, null_ptid
))
249 default_child_has_stack (struct target_ops
*ops
)
251 /* If no inferior selected, there's no stack. */
252 if (ptid_equal (inferior_ptid
, null_ptid
))
259 default_child_has_registers (struct target_ops
*ops
)
261 /* Can't read registers from no inferior. */
262 if (ptid_equal (inferior_ptid
, null_ptid
))
269 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
271 /* If there's no thread selected, then we can't make it run through
273 if (ptid_equal (the_ptid
, null_ptid
))
281 target_has_all_memory_1 (void)
283 struct target_ops
*t
;
285 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
286 if (t
->to_has_all_memory (t
))
293 target_has_memory_1 (void)
295 struct target_ops
*t
;
297 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
298 if (t
->to_has_memory (t
))
305 target_has_stack_1 (void)
307 struct target_ops
*t
;
309 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
310 if (t
->to_has_stack (t
))
317 target_has_registers_1 (void)
319 struct target_ops
*t
;
321 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
322 if (t
->to_has_registers (t
))
329 target_has_execution_1 (ptid_t the_ptid
)
331 struct target_ops
*t
;
333 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
334 if (t
->to_has_execution (t
, the_ptid
))
341 target_has_execution_current (void)
343 return target_has_execution_1 (inferior_ptid
);
346 /* Complete initialization of T. This ensures that various fields in
347 T are set, if needed by the target implementation. */
350 complete_target_initialization (struct target_ops
*t
)
352 /* Provide default values for all "must have" methods. */
353 if (t
->to_xfer_partial
== NULL
)
354 t
->to_xfer_partial
= default_xfer_partial
;
356 if (t
->to_has_all_memory
== NULL
)
357 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
359 if (t
->to_has_memory
== NULL
)
360 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
362 if (t
->to_has_stack
== NULL
)
363 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
365 if (t
->to_has_registers
== NULL
)
366 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
368 if (t
->to_has_execution
== NULL
)
369 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
371 install_delegators (t
);
374 /* Add possible target architecture T to the list and add a new
375 command 'target T->to_shortname'. Set COMPLETER as the command's
376 completer if not NULL. */
379 add_target_with_completer (struct target_ops
*t
,
380 completer_ftype
*completer
)
382 struct cmd_list_element
*c
;
384 complete_target_initialization (t
);
388 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
389 target_structs
= (struct target_ops
**) xmalloc
390 (target_struct_allocsize
* sizeof (*target_structs
));
392 if (target_struct_size
>= target_struct_allocsize
)
394 target_struct_allocsize
*= 2;
395 target_structs
= (struct target_ops
**)
396 xrealloc ((char *) target_structs
,
397 target_struct_allocsize
* sizeof (*target_structs
));
399 target_structs
[target_struct_size
++] = t
;
401 if (targetlist
== NULL
)
402 add_prefix_cmd ("target", class_run
, target_command
, _("\
403 Connect to a target machine or process.\n\
404 The first argument is the type or protocol of the target machine.\n\
405 Remaining arguments are interpreted by the target protocol. For more\n\
406 information on the arguments for a particular protocol, type\n\
407 `help target ' followed by the protocol name."),
408 &targetlist
, "target ", 0, &cmdlist
);
409 c
= add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
,
411 if (completer
!= NULL
)
412 set_cmd_completer (c
, completer
);
415 /* Add a possible target architecture to the list. */
418 add_target (struct target_ops
*t
)
420 add_target_with_completer (t
, NULL
);
426 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
428 struct cmd_list_element
*c
;
431 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
433 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
434 alt
= xstrprintf ("target %s", t
->to_shortname
);
435 deprecate_cmd (c
, alt
);
448 struct target_ops
*t
;
450 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
451 if (t
->to_kill
!= NULL
)
454 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
464 target_load (char *arg
, int from_tty
)
466 target_dcache_invalidate ();
467 (*current_target
.to_load
) (¤t_target
, arg
, from_tty
);
471 target_create_inferior (char *exec_file
, char *args
,
472 char **env
, int from_tty
)
474 struct target_ops
*t
;
476 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
478 if (t
->to_create_inferior
!= NULL
)
480 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
482 fprintf_unfiltered (gdb_stdlog
,
483 "target_create_inferior (%s, %s, xxx, %d)\n",
484 exec_file
, args
, from_tty
);
489 internal_error (__FILE__
, __LINE__
,
490 _("could not find a target to create inferior"));
494 target_terminal_inferior (void)
496 /* A background resume (``run&'') should leave GDB in control of the
497 terminal. Use target_can_async_p, not target_is_async_p, since at
498 this point the target is not async yet. However, if sync_execution
499 is not set, we know it will become async prior to resume. */
500 if (target_can_async_p () && !sync_execution
)
503 /* If GDB is resuming the inferior in the foreground, install
504 inferior's terminal modes. */
505 (*current_target
.to_terminal_inferior
) (¤t_target
);
509 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
510 struct target_ops
*t
)
512 errno
= EIO
; /* Can't read/write this location. */
513 return 0; /* No bytes handled. */
519 error (_("You can't do that when your target is `%s'"),
520 current_target
.to_shortname
);
526 error (_("You can't do that without a process to debug."));
530 default_terminal_info (struct target_ops
*self
, const char *args
, int from_tty
)
532 printf_unfiltered (_("No saved terminal information.\n"));
535 /* A default implementation for the to_get_ada_task_ptid target method.
537 This function builds the PTID by using both LWP and TID as part of
538 the PTID lwp and tid elements. The pid used is the pid of the
542 default_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long tid
)
544 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
547 static enum exec_direction_kind
548 default_execution_direction (struct target_ops
*self
)
550 if (!target_can_execute_reverse
)
552 else if (!target_can_async_p ())
555 gdb_assert_not_reached ("\
556 to_execution_direction must be implemented for reverse async");
559 /* Go through the target stack from top to bottom, copying over zero
560 entries in current_target, then filling in still empty entries. In
561 effect, we are doing class inheritance through the pushed target
564 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
565 is currently implemented, is that it discards any knowledge of
566 which target an inherited method originally belonged to.
567 Consequently, new new target methods should instead explicitly and
568 locally search the target stack for the target that can handle the
572 update_current_target (void)
574 struct target_ops
*t
;
576 /* First, reset current's contents. */
577 memset (¤t_target
, 0, sizeof (current_target
));
579 /* Install the delegators. */
580 install_delegators (¤t_target
);
582 #define INHERIT(FIELD, TARGET) \
583 if (!current_target.FIELD) \
584 current_target.FIELD = (TARGET)->FIELD
586 for (t
= target_stack
; t
; t
= t
->beneath
)
588 INHERIT (to_shortname
, t
);
589 INHERIT (to_longname
, t
);
591 /* Do not inherit to_open. */
592 /* Do not inherit to_close. */
593 /* Do not inherit to_attach. */
594 /* Do not inherit to_post_attach. */
595 INHERIT (to_attach_no_wait
, t
);
596 /* Do not inherit to_detach. */
597 /* Do not inherit to_disconnect. */
598 /* Do not inherit to_resume. */
599 /* Do not inherit to_wait. */
600 /* Do not inherit to_fetch_registers. */
601 /* Do not inherit to_store_registers. */
602 /* Do not inherit to_prepare_to_store. */
603 INHERIT (deprecated_xfer_memory
, t
);
604 /* Do not inherit to_files_info. */
605 /* Do not inherit to_insert_breakpoint. */
606 /* Do not inherit to_remove_breakpoint. */
607 /* Do not inherit to_can_use_hw_breakpoint. */
608 /* Do not inherit to_insert_hw_breakpoint. */
609 /* Do not inherit to_remove_hw_breakpoint. */
610 /* Do not inherit to_ranged_break_num_registers. */
611 /* Do not inherit to_insert_watchpoint. */
612 /* Do not inherit to_remove_watchpoint. */
613 /* Do not inherit to_insert_mask_watchpoint. */
614 /* Do not inherit to_remove_mask_watchpoint. */
615 /* Do not inherit to_stopped_data_address. */
616 INHERIT (to_have_steppable_watchpoint
, t
);
617 INHERIT (to_have_continuable_watchpoint
, t
);
618 /* Do not inherit to_stopped_by_watchpoint. */
619 /* Do not inherit to_watchpoint_addr_within_range. */
620 /* Do not inherit to_region_ok_for_hw_watchpoint. */
621 /* Do not inherit to_can_accel_watchpoint_condition. */
622 /* Do not inherit to_masked_watch_num_registers. */
623 /* Do not inherit to_terminal_init. */
624 /* Do not inherit to_terminal_inferior. */
625 /* Do not inherit to_terminal_ours_for_output. */
626 /* Do not inherit to_terminal_ours. */
627 /* Do not inherit to_terminal_save_ours. */
628 /* Do not inherit to_terminal_info. */
629 /* Do not inherit to_kill. */
630 /* Do not inherit to_load. */
631 /* Do no inherit to_create_inferior. */
632 /* Do not inherit to_post_startup_inferior. */
633 /* Do not inherit to_insert_fork_catchpoint. */
634 INHERIT (to_remove_fork_catchpoint
, t
);
635 INHERIT (to_insert_vfork_catchpoint
, t
);
636 INHERIT (to_remove_vfork_catchpoint
, t
);
637 /* Do not inherit to_follow_fork. */
638 INHERIT (to_insert_exec_catchpoint
, t
);
639 INHERIT (to_remove_exec_catchpoint
, t
);
640 INHERIT (to_set_syscall_catchpoint
, t
);
641 INHERIT (to_has_exited
, t
);
642 /* Do not inherit to_mourn_inferior. */
643 INHERIT (to_can_run
, t
);
644 /* Do not inherit to_pass_signals. */
645 /* Do not inherit to_program_signals. */
646 /* Do not inherit to_thread_alive. */
647 /* Do not inherit to_find_new_threads. */
648 /* Do not inherit to_pid_to_str. */
649 INHERIT (to_extra_thread_info
, t
);
650 INHERIT (to_thread_name
, t
);
651 INHERIT (to_stop
, t
);
652 /* Do not inherit to_xfer_partial. */
653 /* Do not inherit to_rcmd. */
654 INHERIT (to_pid_to_exec_file
, t
);
655 INHERIT (to_log_command
, t
);
656 INHERIT (to_stratum
, t
);
657 /* Do not inherit to_has_all_memory. */
658 /* Do not inherit to_has_memory. */
659 /* Do not inherit to_has_stack. */
660 /* Do not inherit to_has_registers. */
661 /* Do not inherit to_has_execution. */
662 INHERIT (to_has_thread_control
, t
);
663 /* Do not inherit to_can_async_p. */
664 /* Do not inherit to_is_async_p. */
665 /* Do not inherit to_async. */
666 INHERIT (to_find_memory_regions
, t
);
667 INHERIT (to_make_corefile_notes
, t
);
668 INHERIT (to_get_bookmark
, t
);
669 INHERIT (to_goto_bookmark
, t
);
670 /* Do not inherit to_get_thread_local_address. */
671 INHERIT (to_can_execute_reverse
, t
);
672 INHERIT (to_execution_direction
, t
);
673 INHERIT (to_thread_architecture
, t
);
674 /* Do not inherit to_read_description. */
675 INHERIT (to_get_ada_task_ptid
, t
);
676 /* Do not inherit to_search_memory. */
677 INHERIT (to_supports_multi_process
, t
);
678 INHERIT (to_supports_enable_disable_tracepoint
, t
);
679 INHERIT (to_supports_string_tracing
, t
);
680 INHERIT (to_trace_init
, t
);
681 INHERIT (to_download_tracepoint
, t
);
682 INHERIT (to_can_download_tracepoint
, t
);
683 INHERIT (to_download_trace_state_variable
, t
);
684 INHERIT (to_enable_tracepoint
, t
);
685 INHERIT (to_disable_tracepoint
, t
);
686 INHERIT (to_trace_set_readonly_regions
, t
);
687 INHERIT (to_trace_start
, t
);
688 INHERIT (to_get_trace_status
, t
);
689 INHERIT (to_get_tracepoint_status
, t
);
690 INHERIT (to_trace_stop
, t
);
691 INHERIT (to_trace_find
, t
);
692 INHERIT (to_get_trace_state_variable_value
, t
);
693 INHERIT (to_save_trace_data
, t
);
694 INHERIT (to_upload_tracepoints
, t
);
695 INHERIT (to_upload_trace_state_variables
, t
);
696 INHERIT (to_get_raw_trace_data
, t
);
697 INHERIT (to_get_min_fast_tracepoint_insn_len
, t
);
698 INHERIT (to_set_disconnected_tracing
, t
);
699 INHERIT (to_set_circular_trace_buffer
, t
);
700 INHERIT (to_set_trace_buffer_size
, t
);
701 INHERIT (to_set_trace_notes
, t
);
702 INHERIT (to_get_tib_address
, t
);
703 INHERIT (to_set_permissions
, t
);
704 INHERIT (to_static_tracepoint_marker_at
, t
);
705 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
706 INHERIT (to_traceframe_info
, t
);
707 INHERIT (to_use_agent
, t
);
708 INHERIT (to_can_use_agent
, t
);
709 INHERIT (to_augmented_libraries_svr4_read
, t
);
710 INHERIT (to_magic
, t
);
711 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
712 INHERIT (to_can_run_breakpoint_commands
, t
);
713 /* Do not inherit to_memory_map. */
714 /* Do not inherit to_flash_erase. */
715 /* Do not inherit to_flash_done. */
719 /* Clean up a target struct so it no longer has any zero pointers in
720 it. Some entries are defaulted to a method that print an error,
721 others are hard-wired to a standard recursive default. */
723 #define de_fault(field, value) \
724 if (!current_target.field) \
725 current_target.field = value
728 (void (*) (char *, int))
731 (void (*) (struct target_ops
*))
733 de_fault (deprecated_xfer_memory
,
734 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
735 struct mem_attrib
*, struct target_ops
*))
737 de_fault (to_remove_fork_catchpoint
,
738 (int (*) (struct target_ops
*, int))
740 de_fault (to_insert_vfork_catchpoint
,
741 (int (*) (struct target_ops
*, int))
743 de_fault (to_remove_vfork_catchpoint
,
744 (int (*) (struct target_ops
*, int))
746 de_fault (to_insert_exec_catchpoint
,
747 (int (*) (struct target_ops
*, int))
749 de_fault (to_remove_exec_catchpoint
,
750 (int (*) (struct target_ops
*, int))
752 de_fault (to_set_syscall_catchpoint
,
753 (int (*) (struct target_ops
*, int, int, int, int, int *))
755 de_fault (to_has_exited
,
756 (int (*) (struct target_ops
*, int, int, int *))
758 de_fault (to_can_run
,
759 (int (*) (struct target_ops
*))
761 de_fault (to_extra_thread_info
,
762 (char *(*) (struct target_ops
*, struct thread_info
*))
764 de_fault (to_thread_name
,
765 (char *(*) (struct target_ops
*, struct thread_info
*))
768 (void (*) (struct target_ops
*, ptid_t
))
770 de_fault (to_pid_to_exec_file
,
771 (char *(*) (struct target_ops
*, int))
773 de_fault (to_thread_architecture
,
774 default_thread_architecture
);
775 current_target
.to_read_description
= NULL
;
776 de_fault (to_get_ada_task_ptid
,
777 (ptid_t (*) (struct target_ops
*, long, long))
778 default_get_ada_task_ptid
);
779 de_fault (to_supports_multi_process
,
780 (int (*) (struct target_ops
*))
782 de_fault (to_supports_enable_disable_tracepoint
,
783 (int (*) (struct target_ops
*))
785 de_fault (to_supports_string_tracing
,
786 (int (*) (struct target_ops
*))
788 de_fault (to_trace_init
,
789 (void (*) (struct target_ops
*))
791 de_fault (to_download_tracepoint
,
792 (void (*) (struct target_ops
*, struct bp_location
*))
794 de_fault (to_can_download_tracepoint
,
795 (int (*) (struct target_ops
*))
797 de_fault (to_download_trace_state_variable
,
798 (void (*) (struct target_ops
*, struct trace_state_variable
*))
800 de_fault (to_enable_tracepoint
,
801 (void (*) (struct target_ops
*, struct bp_location
*))
803 de_fault (to_disable_tracepoint
,
804 (void (*) (struct target_ops
*, struct bp_location
*))
806 de_fault (to_trace_set_readonly_regions
,
807 (void (*) (struct target_ops
*))
809 de_fault (to_trace_start
,
810 (void (*) (struct target_ops
*))
812 de_fault (to_get_trace_status
,
813 (int (*) (struct target_ops
*, struct trace_status
*))
815 de_fault (to_get_tracepoint_status
,
816 (void (*) (struct target_ops
*, struct breakpoint
*,
817 struct uploaded_tp
*))
819 de_fault (to_trace_stop
,
820 (void (*) (struct target_ops
*))
822 de_fault (to_trace_find
,
823 (int (*) (struct target_ops
*,
824 enum trace_find_type
, int, CORE_ADDR
, CORE_ADDR
, int *))
826 de_fault (to_get_trace_state_variable_value
,
827 (int (*) (struct target_ops
*, int, LONGEST
*))
829 de_fault (to_save_trace_data
,
830 (int (*) (struct target_ops
*, const char *))
832 de_fault (to_upload_tracepoints
,
833 (int (*) (struct target_ops
*, struct uploaded_tp
**))
835 de_fault (to_upload_trace_state_variables
,
836 (int (*) (struct target_ops
*, struct uploaded_tsv
**))
838 de_fault (to_get_raw_trace_data
,
839 (LONGEST (*) (struct target_ops
*, gdb_byte
*, ULONGEST
, LONGEST
))
841 de_fault (to_get_min_fast_tracepoint_insn_len
,
842 (int (*) (struct target_ops
*))
844 de_fault (to_set_disconnected_tracing
,
845 (void (*) (struct target_ops
*, int))
847 de_fault (to_set_circular_trace_buffer
,
848 (void (*) (struct target_ops
*, int))
850 de_fault (to_set_trace_buffer_size
,
851 (void (*) (struct target_ops
*, LONGEST
))
853 de_fault (to_set_trace_notes
,
854 (int (*) (struct target_ops
*,
855 const char *, const char *, const char *))
857 de_fault (to_get_tib_address
,
858 (int (*) (struct target_ops
*, ptid_t
, CORE_ADDR
*))
860 de_fault (to_set_permissions
,
861 (void (*) (struct target_ops
*))
863 de_fault (to_static_tracepoint_marker_at
,
864 (int (*) (struct target_ops
*,
865 CORE_ADDR
, struct static_tracepoint_marker
*))
867 de_fault (to_static_tracepoint_markers_by_strid
,
868 (VEC(static_tracepoint_marker_p
) * (*) (struct target_ops
*,
871 de_fault (to_traceframe_info
,
872 (struct traceframe_info
* (*) (struct target_ops
*))
874 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
875 (int (*) (struct target_ops
*))
877 de_fault (to_can_run_breakpoint_commands
,
878 (int (*) (struct target_ops
*))
880 de_fault (to_use_agent
,
881 (int (*) (struct target_ops
*, int))
883 de_fault (to_can_use_agent
,
884 (int (*) (struct target_ops
*))
886 de_fault (to_augmented_libraries_svr4_read
,
887 (int (*) (struct target_ops
*))
889 de_fault (to_execution_direction
, default_execution_direction
);
893 /* Finally, position the target-stack beneath the squashed
894 "current_target". That way code looking for a non-inherited
895 target method can quickly and simply find it. */
896 current_target
.beneath
= target_stack
;
899 setup_target_debug ();
902 /* Push a new target type into the stack of the existing target accessors,
903 possibly superseding some of the existing accessors.
905 Rather than allow an empty stack, we always have the dummy target at
906 the bottom stratum, so we can call the function vectors without
910 push_target (struct target_ops
*t
)
912 struct target_ops
**cur
;
914 /* Check magic number. If wrong, it probably means someone changed
915 the struct definition, but not all the places that initialize one. */
916 if (t
->to_magic
!= OPS_MAGIC
)
918 fprintf_unfiltered (gdb_stderr
,
919 "Magic number of %s target struct wrong\n",
921 internal_error (__FILE__
, __LINE__
,
922 _("failed internal consistency check"));
925 /* Find the proper stratum to install this target in. */
926 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
928 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
932 /* If there's already targets at this stratum, remove them. */
933 /* FIXME: cagney/2003-10-15: I think this should be popping all
934 targets to CUR, and not just those at this stratum level. */
935 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
937 /* There's already something at this stratum level. Close it,
938 and un-hook it from the stack. */
939 struct target_ops
*tmp
= (*cur
);
941 (*cur
) = (*cur
)->beneath
;
946 /* We have removed all targets in our stratum, now add the new one. */
950 update_current_target ();
953 /* Remove a target_ops vector from the stack, wherever it may be.
954 Return how many times it was removed (0 or 1). */
957 unpush_target (struct target_ops
*t
)
959 struct target_ops
**cur
;
960 struct target_ops
*tmp
;
962 if (t
->to_stratum
== dummy_stratum
)
963 internal_error (__FILE__
, __LINE__
,
964 _("Attempt to unpush the dummy target"));
966 /* Look for the specified target. Note that we assume that a target
967 can only occur once in the target stack. */
969 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
975 /* If we don't find target_ops, quit. Only open targets should be
980 /* Unchain the target. */
982 (*cur
) = (*cur
)->beneath
;
985 update_current_target ();
987 /* Finally close the target. Note we do this after unchaining, so
988 any target method calls from within the target_close
989 implementation don't end up in T anymore. */
996 pop_all_targets_above (enum strata above_stratum
)
998 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
1000 if (!unpush_target (target_stack
))
1002 fprintf_unfiltered (gdb_stderr
,
1003 "pop_all_targets couldn't find target %s\n",
1004 target_stack
->to_shortname
);
1005 internal_error (__FILE__
, __LINE__
,
1006 _("failed internal consistency check"));
1013 pop_all_targets (void)
1015 pop_all_targets_above (dummy_stratum
);
1018 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
1021 target_is_pushed (struct target_ops
*t
)
1023 struct target_ops
**cur
;
1025 /* Check magic number. If wrong, it probably means someone changed
1026 the struct definition, but not all the places that initialize one. */
1027 if (t
->to_magic
!= OPS_MAGIC
)
1029 fprintf_unfiltered (gdb_stderr
,
1030 "Magic number of %s target struct wrong\n",
1032 internal_error (__FILE__
, __LINE__
,
1033 _("failed internal consistency check"));
1036 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1043 /* Using the objfile specified in OBJFILE, find the address for the
1044 current thread's thread-local storage with offset OFFSET. */
1046 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1048 volatile CORE_ADDR addr
= 0;
1049 struct target_ops
*target
;
1051 for (target
= current_target
.beneath
;
1053 target
= target
->beneath
)
1055 if (target
->to_get_thread_local_address
!= NULL
)
1060 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
1062 ptid_t ptid
= inferior_ptid
;
1063 volatile struct gdb_exception ex
;
1065 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1069 /* Fetch the load module address for this objfile. */
1070 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1072 /* If it's 0, throw the appropriate exception. */
1074 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1075 _("TLS load module not found"));
1077 addr
= target
->to_get_thread_local_address (target
, ptid
,
1080 /* If an error occurred, print TLS related messages here. Otherwise,
1081 throw the error to some higher catcher. */
1084 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1088 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1089 error (_("Cannot find thread-local variables "
1090 "in this thread library."));
1092 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1093 if (objfile_is_library
)
1094 error (_("Cannot find shared library `%s' in dynamic"
1095 " linker's load module list"), objfile_name (objfile
));
1097 error (_("Cannot find executable file `%s' in dynamic"
1098 " linker's load module list"), objfile_name (objfile
));
1100 case TLS_NOT_ALLOCATED_YET_ERROR
:
1101 if (objfile_is_library
)
1102 error (_("The inferior has not yet allocated storage for"
1103 " thread-local variables in\n"
1104 "the shared library `%s'\n"
1106 objfile_name (objfile
), target_pid_to_str (ptid
));
1108 error (_("The inferior has not yet allocated storage for"
1109 " thread-local variables in\n"
1110 "the executable `%s'\n"
1112 objfile_name (objfile
), target_pid_to_str (ptid
));
1114 case TLS_GENERIC_ERROR
:
1115 if (objfile_is_library
)
1116 error (_("Cannot find thread-local storage for %s, "
1117 "shared library %s:\n%s"),
1118 target_pid_to_str (ptid
),
1119 objfile_name (objfile
), ex
.message
);
1121 error (_("Cannot find thread-local storage for %s, "
1122 "executable file %s:\n%s"),
1123 target_pid_to_str (ptid
),
1124 objfile_name (objfile
), ex
.message
);
1127 throw_exception (ex
);
1132 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1133 TLS is an ABI-specific thing. But we don't do that yet. */
1135 error (_("Cannot find thread-local variables on this target"));
1141 target_xfer_status_to_string (enum target_xfer_status err
)
1143 #define CASE(X) case X: return #X
1146 CASE(TARGET_XFER_E_IO
);
1147 CASE(TARGET_XFER_E_UNAVAILABLE
);
1156 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1158 /* target_read_string -- read a null terminated string, up to LEN bytes,
1159 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1160 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1161 is responsible for freeing it. Return the number of bytes successfully
1165 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1167 int tlen
, offset
, i
;
1171 int buffer_allocated
;
1173 unsigned int nbytes_read
= 0;
1175 gdb_assert (string
);
1177 /* Small for testing. */
1178 buffer_allocated
= 4;
1179 buffer
= xmalloc (buffer_allocated
);
1184 tlen
= MIN (len
, 4 - (memaddr
& 3));
1185 offset
= memaddr
& 3;
1187 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1190 /* The transfer request might have crossed the boundary to an
1191 unallocated region of memory. Retry the transfer, requesting
1195 errcode
= target_read_memory (memaddr
, buf
, 1);
1200 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1204 bytes
= bufptr
- buffer
;
1205 buffer_allocated
*= 2;
1206 buffer
= xrealloc (buffer
, buffer_allocated
);
1207 bufptr
= buffer
+ bytes
;
1210 for (i
= 0; i
< tlen
; i
++)
1212 *bufptr
++ = buf
[i
+ offset
];
1213 if (buf
[i
+ offset
] == '\000')
1215 nbytes_read
+= i
+ 1;
1222 nbytes_read
+= tlen
;
1231 struct target_section_table
*
1232 target_get_section_table (struct target_ops
*target
)
1234 struct target_ops
*t
;
1237 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1239 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1240 if (t
->to_get_section_table
!= NULL
)
1241 return (*t
->to_get_section_table
) (t
);
1246 /* Find a section containing ADDR. */
1248 struct target_section
*
1249 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1251 struct target_section_table
*table
= target_get_section_table (target
);
1252 struct target_section
*secp
;
1257 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1259 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1265 /* Read memory from the live target, even if currently inspecting a
1266 traceframe. The return is the same as that of target_read. */
1268 static enum target_xfer_status
1269 target_read_live_memory (enum target_object object
,
1270 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1271 ULONGEST
*xfered_len
)
1273 enum target_xfer_status ret
;
1274 struct cleanup
*cleanup
;
1276 /* Switch momentarily out of tfind mode so to access live memory.
1277 Note that this must not clear global state, such as the frame
1278 cache, which must still remain valid for the previous traceframe.
1279 We may be _building_ the frame cache at this point. */
1280 cleanup
= make_cleanup_restore_traceframe_number ();
1281 set_traceframe_number (-1);
1283 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1284 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1286 do_cleanups (cleanup
);
1290 /* Using the set of read-only target sections of OPS, read live
1291 read-only memory. Note that the actual reads start from the
1292 top-most target again.
1294 For interface/parameters/return description see target.h,
1297 static enum target_xfer_status
1298 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1299 enum target_object object
,
1300 gdb_byte
*readbuf
, ULONGEST memaddr
,
1301 ULONGEST len
, ULONGEST
*xfered_len
)
1303 struct target_section
*secp
;
1304 struct target_section_table
*table
;
1306 secp
= target_section_by_addr (ops
, memaddr
);
1308 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1309 secp
->the_bfd_section
)
1312 struct target_section
*p
;
1313 ULONGEST memend
= memaddr
+ len
;
1315 table
= target_get_section_table (ops
);
1317 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1319 if (memaddr
>= p
->addr
)
1321 if (memend
<= p
->endaddr
)
1323 /* Entire transfer is within this section. */
1324 return target_read_live_memory (object
, memaddr
,
1325 readbuf
, len
, xfered_len
);
1327 else if (memaddr
>= p
->endaddr
)
1329 /* This section ends before the transfer starts. */
1334 /* This section overlaps the transfer. Just do half. */
1335 len
= p
->endaddr
- memaddr
;
1336 return target_read_live_memory (object
, memaddr
,
1337 readbuf
, len
, xfered_len
);
1343 return TARGET_XFER_EOF
;
1346 /* Read memory from more than one valid target. A core file, for
1347 instance, could have some of memory but delegate other bits to
1348 the target below it. So, we must manually try all targets. */
1350 static enum target_xfer_status
1351 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1352 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1353 ULONGEST
*xfered_len
)
1355 enum target_xfer_status res
;
1359 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1360 readbuf
, writebuf
, memaddr
, len
,
1362 if (res
== TARGET_XFER_OK
)
1365 /* Stop if the target reports that the memory is not available. */
1366 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1369 /* We want to continue past core files to executables, but not
1370 past a running target's memory. */
1371 if (ops
->to_has_all_memory (ops
))
1376 while (ops
!= NULL
);
1381 /* Perform a partial memory transfer.
1382 For docs see target.h, to_xfer_partial. */
1384 static enum target_xfer_status
1385 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1386 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1387 ULONGEST len
, ULONGEST
*xfered_len
)
1389 enum target_xfer_status res
;
1391 struct mem_region
*region
;
1392 struct inferior
*inf
;
1394 /* For accesses to unmapped overlay sections, read directly from
1395 files. Must do this first, as MEMADDR may need adjustment. */
1396 if (readbuf
!= NULL
&& overlay_debugging
)
1398 struct obj_section
*section
= find_pc_overlay (memaddr
);
1400 if (pc_in_unmapped_range (memaddr
, section
))
1402 struct target_section_table
*table
1403 = target_get_section_table (ops
);
1404 const char *section_name
= section
->the_bfd_section
->name
;
1406 memaddr
= overlay_mapped_address (memaddr
, section
);
1407 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1408 memaddr
, len
, xfered_len
,
1410 table
->sections_end
,
1415 /* Try the executable files, if "trust-readonly-sections" is set. */
1416 if (readbuf
!= NULL
&& trust_readonly
)
1418 struct target_section
*secp
;
1419 struct target_section_table
*table
;
1421 secp
= target_section_by_addr (ops
, memaddr
);
1423 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1424 secp
->the_bfd_section
)
1427 table
= target_get_section_table (ops
);
1428 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1429 memaddr
, len
, xfered_len
,
1431 table
->sections_end
,
1436 /* If reading unavailable memory in the context of traceframes, and
1437 this address falls within a read-only section, fallback to
1438 reading from live memory. */
1439 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1441 VEC(mem_range_s
) *available
;
1443 /* If we fail to get the set of available memory, then the
1444 target does not support querying traceframe info, and so we
1445 attempt reading from the traceframe anyway (assuming the
1446 target implements the old QTro packet then). */
1447 if (traceframe_available_memory (&available
, memaddr
, len
))
1449 struct cleanup
*old_chain
;
1451 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1453 if (VEC_empty (mem_range_s
, available
)
1454 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1456 /* Don't read into the traceframe's available
1458 if (!VEC_empty (mem_range_s
, available
))
1460 LONGEST oldlen
= len
;
1462 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1463 gdb_assert (len
<= oldlen
);
1466 do_cleanups (old_chain
);
1468 /* This goes through the topmost target again. */
1469 res
= memory_xfer_live_readonly_partial (ops
, object
,
1472 if (res
== TARGET_XFER_OK
)
1473 return TARGET_XFER_OK
;
1476 /* No use trying further, we know some memory starting
1477 at MEMADDR isn't available. */
1479 return TARGET_XFER_E_UNAVAILABLE
;
1483 /* Don't try to read more than how much is available, in
1484 case the target implements the deprecated QTro packet to
1485 cater for older GDBs (the target's knowledge of read-only
1486 sections may be outdated by now). */
1487 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1489 do_cleanups (old_chain
);
1493 /* Try GDB's internal data cache. */
1494 region
= lookup_mem_region (memaddr
);
1495 /* region->hi == 0 means there's no upper bound. */
1496 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1499 reg_len
= region
->hi
- memaddr
;
1501 switch (region
->attrib
.mode
)
1504 if (writebuf
!= NULL
)
1505 return TARGET_XFER_E_IO
;
1509 if (readbuf
!= NULL
)
1510 return TARGET_XFER_E_IO
;
1514 /* We only support writing to flash during "load" for now. */
1515 if (writebuf
!= NULL
)
1516 error (_("Writing to flash memory forbidden in this context"));
1520 return TARGET_XFER_E_IO
;
1523 if (!ptid_equal (inferior_ptid
, null_ptid
))
1524 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1529 /* The dcache reads whole cache lines; that doesn't play well
1530 with reading from a trace buffer, because reading outside of
1531 the collected memory range fails. */
1532 && get_traceframe_number () == -1
1533 && (region
->attrib
.cache
1534 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1535 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1537 DCACHE
*dcache
= target_dcache_get_or_init ();
1540 if (readbuf
!= NULL
)
1541 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1543 /* FIXME drow/2006-08-09: If we're going to preserve const
1544 correctness dcache_xfer_memory should take readbuf and
1546 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1549 return TARGET_XFER_E_IO
;
1552 *xfered_len
= (ULONGEST
) l
;
1553 return TARGET_XFER_OK
;
1557 /* If none of those methods found the memory we wanted, fall back
1558 to a target partial transfer. Normally a single call to
1559 to_xfer_partial is enough; if it doesn't recognize an object
1560 it will call the to_xfer_partial of the next target down.
1561 But for memory this won't do. Memory is the only target
1562 object which can be read from more than one valid target.
1563 A core file, for instance, could have some of memory but
1564 delegate other bits to the target below it. So, we must
1565 manually try all targets. */
1567 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1570 /* Make sure the cache gets updated no matter what - if we are writing
1571 to the stack. Even if this write is not tagged as such, we still need
1572 to update the cache. */
1574 if (res
== TARGET_XFER_OK
1577 && target_dcache_init_p ()
1578 && !region
->attrib
.cache
1579 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1580 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1582 DCACHE
*dcache
= target_dcache_get ();
1584 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1587 /* If we still haven't got anything, return the last error. We
1592 /* Perform a partial memory transfer. For docs see target.h,
1595 static enum target_xfer_status
1596 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1597 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1598 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1600 enum target_xfer_status res
;
1602 /* Zero length requests are ok and require no work. */
1604 return TARGET_XFER_EOF
;
1606 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1607 breakpoint insns, thus hiding out from higher layers whether
1608 there are software breakpoints inserted in the code stream. */
1609 if (readbuf
!= NULL
)
1611 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1614 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1615 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1620 struct cleanup
*old_chain
;
1622 /* A large write request is likely to be partially satisfied
1623 by memory_xfer_partial_1. We will continually malloc
1624 and free a copy of the entire write request for breakpoint
1625 shadow handling even though we only end up writing a small
1626 subset of it. Cap writes to 4KB to mitigate this. */
1627 len
= min (4096, len
);
1629 buf
= xmalloc (len
);
1630 old_chain
= make_cleanup (xfree
, buf
);
1631 memcpy (buf
, writebuf
, len
);
1633 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1634 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1637 do_cleanups (old_chain
);
1644 restore_show_memory_breakpoints (void *arg
)
1646 show_memory_breakpoints
= (uintptr_t) arg
;
1650 make_show_memory_breakpoints_cleanup (int show
)
1652 int current
= show_memory_breakpoints
;
1654 show_memory_breakpoints
= show
;
1655 return make_cleanup (restore_show_memory_breakpoints
,
1656 (void *) (uintptr_t) current
);
1659 /* For docs see target.h, to_xfer_partial. */
1661 enum target_xfer_status
1662 target_xfer_partial (struct target_ops
*ops
,
1663 enum target_object object
, const char *annex
,
1664 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1665 ULONGEST offset
, ULONGEST len
,
1666 ULONGEST
*xfered_len
)
1668 enum target_xfer_status retval
;
1670 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1672 /* Transfer is done when LEN is zero. */
1674 return TARGET_XFER_EOF
;
1676 if (writebuf
&& !may_write_memory
)
1677 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1678 core_addr_to_string_nz (offset
), plongest (len
));
1682 /* If this is a memory transfer, let the memory-specific code
1683 have a look at it instead. Memory transfers are more
1685 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1686 || object
== TARGET_OBJECT_CODE_MEMORY
)
1687 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1688 writebuf
, offset
, len
, xfered_len
);
1689 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1691 /* Request the normal memory object from other layers. */
1692 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1696 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1697 writebuf
, offset
, len
, xfered_len
);
1701 const unsigned char *myaddr
= NULL
;
1703 fprintf_unfiltered (gdb_stdlog
,
1704 "%s:target_xfer_partial "
1705 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1708 (annex
? annex
: "(null)"),
1709 host_address_to_string (readbuf
),
1710 host_address_to_string (writebuf
),
1711 core_addr_to_string_nz (offset
),
1712 pulongest (len
), retval
,
1713 pulongest (*xfered_len
));
1719 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1723 fputs_unfiltered (", bytes =", gdb_stdlog
);
1724 for (i
= 0; i
< *xfered_len
; i
++)
1726 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1728 if (targetdebug
< 2 && i
> 0)
1730 fprintf_unfiltered (gdb_stdlog
, " ...");
1733 fprintf_unfiltered (gdb_stdlog
, "\n");
1736 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1740 fputc_unfiltered ('\n', gdb_stdlog
);
1743 /* Check implementations of to_xfer_partial update *XFERED_LEN
1744 properly. Do assertion after printing debug messages, so that we
1745 can find more clues on assertion failure from debugging messages. */
1746 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1747 gdb_assert (*xfered_len
> 0);
1752 /* Read LEN bytes of target memory at address MEMADDR, placing the
1753 results in GDB's memory at MYADDR. Returns either 0 for success or
1754 TARGET_XFER_E_IO if any error occurs.
1756 If an error occurs, no guarantee is made about the contents of the data at
1757 MYADDR. In particular, the caller should not depend upon partial reads
1758 filling the buffer with good data. There is no way for the caller to know
1759 how much good data might have been transfered anyway. Callers that can
1760 deal with partial reads should call target_read (which will retry until
1761 it makes no progress, and then return how much was transferred). */
1764 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1766 /* Dispatch to the topmost target, not the flattened current_target.
1767 Memory accesses check target->to_has_(all_)memory, and the
1768 flattened target doesn't inherit those. */
1769 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1770 myaddr
, memaddr
, len
) == len
)
1773 return TARGET_XFER_E_IO
;
1776 /* Like target_read_memory, but specify explicitly that this is a read
1777 from the target's raw memory. That is, this read bypasses the
1778 dcache, breakpoint shadowing, etc. */
1781 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1783 /* See comment in target_read_memory about why the request starts at
1784 current_target.beneath. */
1785 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1786 myaddr
, memaddr
, len
) == len
)
1789 return TARGET_XFER_E_IO
;
1792 /* Like target_read_memory, but specify explicitly that this is a read from
1793 the target's stack. This may trigger different cache behavior. */
1796 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1798 /* See comment in target_read_memory about why the request starts at
1799 current_target.beneath. */
1800 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1801 myaddr
, memaddr
, len
) == len
)
1804 return TARGET_XFER_E_IO
;
1807 /* Like target_read_memory, but specify explicitly that this is a read from
1808 the target's code. This may trigger different cache behavior. */
1811 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1813 /* See comment in target_read_memory about why the request starts at
1814 current_target.beneath. */
1815 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1816 myaddr
, memaddr
, len
) == len
)
1819 return TARGET_XFER_E_IO
;
1822 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1823 Returns either 0 for success or TARGET_XFER_E_IO if any
1824 error occurs. If an error occurs, no guarantee is made about how
1825 much data got written. Callers that can deal with partial writes
1826 should call target_write. */
1829 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1831 /* See comment in target_read_memory about why the request starts at
1832 current_target.beneath. */
1833 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1834 myaddr
, memaddr
, len
) == len
)
1837 return TARGET_XFER_E_IO
;
1840 /* Write LEN bytes from MYADDR to target raw memory at address
1841 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1842 if any error occurs. If an error occurs, no guarantee is made
1843 about how much data got written. Callers that can deal with
1844 partial writes should call target_write. */
1847 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1849 /* See comment in target_read_memory about why the request starts at
1850 current_target.beneath. */
1851 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1852 myaddr
, memaddr
, len
) == len
)
1855 return TARGET_XFER_E_IO
;
1858 /* Fetch the target's memory map. */
1861 target_memory_map (void)
1863 VEC(mem_region_s
) *result
;
1864 struct mem_region
*last_one
, *this_one
;
1866 struct target_ops
*t
;
1869 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1871 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1872 if (t
->to_memory_map
!= NULL
)
1878 result
= t
->to_memory_map (t
);
1882 qsort (VEC_address (mem_region_s
, result
),
1883 VEC_length (mem_region_s
, result
),
1884 sizeof (struct mem_region
), mem_region_cmp
);
1886 /* Check that regions do not overlap. Simultaneously assign
1887 a numbering for the "mem" commands to use to refer to
1890 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1892 this_one
->number
= ix
;
1894 if (last_one
&& last_one
->hi
> this_one
->lo
)
1896 warning (_("Overlapping regions in memory map: ignoring"));
1897 VEC_free (mem_region_s
, result
);
1900 last_one
= this_one
;
1907 target_flash_erase (ULONGEST address
, LONGEST length
)
1909 struct target_ops
*t
;
1911 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1912 if (t
->to_flash_erase
!= NULL
)
1915 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1916 hex_string (address
), phex (length
, 0));
1917 t
->to_flash_erase (t
, address
, length
);
1925 target_flash_done (void)
1927 struct target_ops
*t
;
1929 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1930 if (t
->to_flash_done
!= NULL
)
1933 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1934 t
->to_flash_done (t
);
1942 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1943 struct cmd_list_element
*c
, const char *value
)
1945 fprintf_filtered (file
,
1946 _("Mode for reading from readonly sections is %s.\n"),
1950 /* More generic transfers. */
1952 static enum target_xfer_status
1953 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1954 const char *annex
, gdb_byte
*readbuf
,
1955 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1956 ULONGEST
*xfered_len
)
1958 if (object
== TARGET_OBJECT_MEMORY
1959 && ops
->deprecated_xfer_memory
!= NULL
)
1960 /* If available, fall back to the target's
1961 "deprecated_xfer_memory" method. */
1966 if (writebuf
!= NULL
)
1968 void *buffer
= xmalloc (len
);
1969 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1971 memcpy (buffer
, writebuf
, len
);
1972 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1973 1/*write*/, NULL
, ops
);
1974 do_cleanups (cleanup
);
1976 if (readbuf
!= NULL
)
1977 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1978 0/*read*/, NULL
, ops
);
1981 *xfered_len
= (ULONGEST
) xfered
;
1982 return TARGET_XFER_E_IO
;
1984 else if (xfered
== 0 && errno
== 0)
1985 /* "deprecated_xfer_memory" uses 0, cross checked against
1986 ERRNO as one indication of an error. */
1987 return TARGET_XFER_EOF
;
1989 return TARGET_XFER_E_IO
;
1993 gdb_assert (ops
->beneath
!= NULL
);
1994 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1995 readbuf
, writebuf
, offset
, len
,
2000 /* Target vector read/write partial wrapper functions. */
2002 static enum target_xfer_status
2003 target_read_partial (struct target_ops
*ops
,
2004 enum target_object object
,
2005 const char *annex
, gdb_byte
*buf
,
2006 ULONGEST offset
, ULONGEST len
,
2007 ULONGEST
*xfered_len
)
2009 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
2013 static enum target_xfer_status
2014 target_write_partial (struct target_ops
*ops
,
2015 enum target_object object
,
2016 const char *annex
, const gdb_byte
*buf
,
2017 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
2019 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
2023 /* Wrappers to perform the full transfer. */
2025 /* For docs on target_read see target.h. */
2028 target_read (struct target_ops
*ops
,
2029 enum target_object object
,
2030 const char *annex
, gdb_byte
*buf
,
2031 ULONGEST offset
, LONGEST len
)
2035 while (xfered
< len
)
2037 ULONGEST xfered_len
;
2038 enum target_xfer_status status
;
2040 status
= target_read_partial (ops
, object
, annex
,
2041 (gdb_byte
*) buf
+ xfered
,
2042 offset
+ xfered
, len
- xfered
,
2045 /* Call an observer, notifying them of the xfer progress? */
2046 if (status
== TARGET_XFER_EOF
)
2048 else if (status
== TARGET_XFER_OK
)
2050 xfered
+= xfered_len
;
2060 /* Assuming that the entire [begin, end) range of memory cannot be
2061 read, try to read whatever subrange is possible to read.
2063 The function returns, in RESULT, either zero or one memory block.
2064 If there's a readable subrange at the beginning, it is completely
2065 read and returned. Any further readable subrange will not be read.
2066 Otherwise, if there's a readable subrange at the end, it will be
2067 completely read and returned. Any readable subranges before it
2068 (obviously, not starting at the beginning), will be ignored. In
2069 other cases -- either no readable subrange, or readable subrange(s)
2070 that is neither at the beginning, or end, nothing is returned.
2072 The purpose of this function is to handle a read across a boundary
2073 of accessible memory in a case when memory map is not available.
2074 The above restrictions are fine for this case, but will give
2075 incorrect results if the memory is 'patchy'. However, supporting
2076 'patchy' memory would require trying to read every single byte,
2077 and it seems unacceptable solution. Explicit memory map is
2078 recommended for this case -- and target_read_memory_robust will
2079 take care of reading multiple ranges then. */
2082 read_whatever_is_readable (struct target_ops
*ops
,
2083 ULONGEST begin
, ULONGEST end
,
2084 VEC(memory_read_result_s
) **result
)
2086 gdb_byte
*buf
= xmalloc (end
- begin
);
2087 ULONGEST current_begin
= begin
;
2088 ULONGEST current_end
= end
;
2090 memory_read_result_s r
;
2091 ULONGEST xfered_len
;
2093 /* If we previously failed to read 1 byte, nothing can be done here. */
2094 if (end
- begin
<= 1)
2100 /* Check that either first or the last byte is readable, and give up
2101 if not. This heuristic is meant to permit reading accessible memory
2102 at the boundary of accessible region. */
2103 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2104 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
2109 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2110 buf
+ (end
-begin
) - 1, end
- 1, 1,
2111 &xfered_len
) == TARGET_XFER_OK
)
2122 /* Loop invariant is that the [current_begin, current_end) was previously
2123 found to be not readable as a whole.
2125 Note loop condition -- if the range has 1 byte, we can't divide the range
2126 so there's no point trying further. */
2127 while (current_end
- current_begin
> 1)
2129 ULONGEST first_half_begin
, first_half_end
;
2130 ULONGEST second_half_begin
, second_half_end
;
2132 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2136 first_half_begin
= current_begin
;
2137 first_half_end
= middle
;
2138 second_half_begin
= middle
;
2139 second_half_end
= current_end
;
2143 first_half_begin
= middle
;
2144 first_half_end
= current_end
;
2145 second_half_begin
= current_begin
;
2146 second_half_end
= middle
;
2149 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2150 buf
+ (first_half_begin
- begin
),
2152 first_half_end
- first_half_begin
);
2154 if (xfer
== first_half_end
- first_half_begin
)
2156 /* This half reads up fine. So, the error must be in the
2158 current_begin
= second_half_begin
;
2159 current_end
= second_half_end
;
2163 /* This half is not readable. Because we've tried one byte, we
2164 know some part of this half if actually redable. Go to the next
2165 iteration to divide again and try to read.
2167 We don't handle the other half, because this function only tries
2168 to read a single readable subrange. */
2169 current_begin
= first_half_begin
;
2170 current_end
= first_half_end
;
2176 /* The [begin, current_begin) range has been read. */
2178 r
.end
= current_begin
;
2183 /* The [current_end, end) range has been read. */
2184 LONGEST rlen
= end
- current_end
;
2186 r
.data
= xmalloc (rlen
);
2187 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2188 r
.begin
= current_end
;
2192 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2196 free_memory_read_result_vector (void *x
)
2198 VEC(memory_read_result_s
) *v
= x
;
2199 memory_read_result_s
*current
;
2202 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2204 xfree (current
->data
);
2206 VEC_free (memory_read_result_s
, v
);
2209 VEC(memory_read_result_s
) *
2210 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2212 VEC(memory_read_result_s
) *result
= 0;
2215 while (xfered
< len
)
2217 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2220 /* If there is no explicit region, a fake one should be created. */
2221 gdb_assert (region
);
2223 if (region
->hi
== 0)
2224 rlen
= len
- xfered
;
2226 rlen
= region
->hi
- offset
;
2228 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2230 /* Cannot read this region. Note that we can end up here only
2231 if the region is explicitly marked inaccessible, or
2232 'inaccessible-by-default' is in effect. */
2237 LONGEST to_read
= min (len
- xfered
, rlen
);
2238 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2240 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2241 (gdb_byte
*) buffer
,
2242 offset
+ xfered
, to_read
);
2243 /* Call an observer, notifying them of the xfer progress? */
2246 /* Got an error reading full chunk. See if maybe we can read
2249 read_whatever_is_readable (ops
, offset
+ xfered
,
2250 offset
+ xfered
+ to_read
, &result
);
2255 struct memory_read_result r
;
2257 r
.begin
= offset
+ xfered
;
2258 r
.end
= r
.begin
+ xfer
;
2259 VEC_safe_push (memory_read_result_s
, result
, &r
);
2269 /* An alternative to target_write with progress callbacks. */
2272 target_write_with_progress (struct target_ops
*ops
,
2273 enum target_object object
,
2274 const char *annex
, const gdb_byte
*buf
,
2275 ULONGEST offset
, LONGEST len
,
2276 void (*progress
) (ULONGEST
, void *), void *baton
)
2280 /* Give the progress callback a chance to set up. */
2282 (*progress
) (0, baton
);
2284 while (xfered
< len
)
2286 ULONGEST xfered_len
;
2287 enum target_xfer_status status
;
2289 status
= target_write_partial (ops
, object
, annex
,
2290 (gdb_byte
*) buf
+ xfered
,
2291 offset
+ xfered
, len
- xfered
,
2294 if (status
== TARGET_XFER_EOF
)
2296 if (TARGET_XFER_STATUS_ERROR_P (status
))
2299 gdb_assert (status
== TARGET_XFER_OK
);
2301 (*progress
) (xfered_len
, baton
);
2303 xfered
+= xfered_len
;
2309 /* For docs on target_write see target.h. */
2312 target_write (struct target_ops
*ops
,
2313 enum target_object object
,
2314 const char *annex
, const gdb_byte
*buf
,
2315 ULONGEST offset
, LONGEST len
)
2317 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2321 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2322 the size of the transferred data. PADDING additional bytes are
2323 available in *BUF_P. This is a helper function for
2324 target_read_alloc; see the declaration of that function for more
2328 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2329 const char *annex
, gdb_byte
**buf_p
, int padding
)
2331 size_t buf_alloc
, buf_pos
;
2334 /* This function does not have a length parameter; it reads the
2335 entire OBJECT). Also, it doesn't support objects fetched partly
2336 from one target and partly from another (in a different stratum,
2337 e.g. a core file and an executable). Both reasons make it
2338 unsuitable for reading memory. */
2339 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2341 /* Start by reading up to 4K at a time. The target will throttle
2342 this number down if necessary. */
2344 buf
= xmalloc (buf_alloc
);
2348 ULONGEST xfered_len
;
2349 enum target_xfer_status status
;
2351 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2352 buf_pos
, buf_alloc
- buf_pos
- padding
,
2355 if (status
== TARGET_XFER_EOF
)
2357 /* Read all there was. */
2364 else if (status
!= TARGET_XFER_OK
)
2366 /* An error occurred. */
2368 return TARGET_XFER_E_IO
;
2371 buf_pos
+= xfered_len
;
2373 /* If the buffer is filling up, expand it. */
2374 if (buf_alloc
< buf_pos
* 2)
2377 buf
= xrealloc (buf
, buf_alloc
);
2384 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2385 the size of the transferred data. See the declaration in "target.h"
2386 function for more information about the return value. */
2389 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2390 const char *annex
, gdb_byte
**buf_p
)
2392 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2395 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2396 returned as a string, allocated using xmalloc. If an error occurs
2397 or the transfer is unsupported, NULL is returned. Empty objects
2398 are returned as allocated but empty strings. A warning is issued
2399 if the result contains any embedded NUL bytes. */
2402 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2407 LONGEST i
, transferred
;
2409 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2410 bufstr
= (char *) buffer
;
2412 if (transferred
< 0)
2415 if (transferred
== 0)
2416 return xstrdup ("");
2418 bufstr
[transferred
] = 0;
2420 /* Check for embedded NUL bytes; but allow trailing NULs. */
2421 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2424 warning (_("target object %d, annex %s, "
2425 "contained unexpected null characters"),
2426 (int) object
, annex
? annex
: "(none)");
2433 /* Memory transfer methods. */
2436 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2439 /* This method is used to read from an alternate, non-current
2440 target. This read must bypass the overlay support (as symbols
2441 don't match this target), and GDB's internal cache (wrong cache
2442 for this target). */
2443 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2445 memory_error (TARGET_XFER_E_IO
, addr
);
2449 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2450 int len
, enum bfd_endian byte_order
)
2452 gdb_byte buf
[sizeof (ULONGEST
)];
2454 gdb_assert (len
<= sizeof (buf
));
2455 get_target_memory (ops
, addr
, buf
, len
);
2456 return extract_unsigned_integer (buf
, len
, byte_order
);
2462 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2463 struct bp_target_info
*bp_tgt
)
2465 if (!may_insert_breakpoints
)
2467 warning (_("May not insert breakpoints"));
2471 return current_target
.to_insert_breakpoint (¤t_target
,
2478 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2479 struct bp_target_info
*bp_tgt
)
2481 /* This is kind of a weird case to handle, but the permission might
2482 have been changed after breakpoints were inserted - in which case
2483 we should just take the user literally and assume that any
2484 breakpoints should be left in place. */
2485 if (!may_insert_breakpoints
)
2487 warning (_("May not remove breakpoints"));
2491 return current_target
.to_remove_breakpoint (¤t_target
,
2496 target_info (char *args
, int from_tty
)
2498 struct target_ops
*t
;
2499 int has_all_mem
= 0;
2501 if (symfile_objfile
!= NULL
)
2502 printf_unfiltered (_("Symbols from \"%s\".\n"),
2503 objfile_name (symfile_objfile
));
2505 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2507 if (!(*t
->to_has_memory
) (t
))
2510 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2513 printf_unfiltered (_("\tWhile running this, "
2514 "GDB does not access memory from...\n"));
2515 printf_unfiltered ("%s:\n", t
->to_longname
);
2516 (t
->to_files_info
) (t
);
2517 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2521 /* This function is called before any new inferior is created, e.g.
2522 by running a program, attaching, or connecting to a target.
2523 It cleans up any state from previous invocations which might
2524 change between runs. This is a subset of what target_preopen
2525 resets (things which might change between targets). */
2528 target_pre_inferior (int from_tty
)
2530 /* Clear out solib state. Otherwise the solib state of the previous
2531 inferior might have survived and is entirely wrong for the new
2532 target. This has been observed on GNU/Linux using glibc 2.3. How
2544 Cannot access memory at address 0xdeadbeef
2547 /* In some OSs, the shared library list is the same/global/shared
2548 across inferiors. If code is shared between processes, so are
2549 memory regions and features. */
2550 if (!gdbarch_has_global_solist (target_gdbarch ()))
2552 no_shared_libraries (NULL
, from_tty
);
2554 invalidate_target_mem_regions ();
2556 target_clear_description ();
2559 agent_capability_invalidate ();
2562 /* Callback for iterate_over_inferiors. Gets rid of the given
2566 dispose_inferior (struct inferior
*inf
, void *args
)
2568 struct thread_info
*thread
;
2570 thread
= any_thread_of_process (inf
->pid
);
2573 switch_to_thread (thread
->ptid
);
2575 /* Core inferiors actually should be detached, not killed. */
2576 if (target_has_execution
)
2579 target_detach (NULL
, 0);
2585 /* This is to be called by the open routine before it does
2589 target_preopen (int from_tty
)
2593 if (have_inferiors ())
2596 || !have_live_inferiors ()
2597 || query (_("A program is being debugged already. Kill it? ")))
2598 iterate_over_inferiors (dispose_inferior
, NULL
);
2600 error (_("Program not killed."));
2603 /* Calling target_kill may remove the target from the stack. But if
2604 it doesn't (which seems like a win for UDI), remove it now. */
2605 /* Leave the exec target, though. The user may be switching from a
2606 live process to a core of the same program. */
2607 pop_all_targets_above (file_stratum
);
2609 target_pre_inferior (from_tty
);
2612 /* Detach a target after doing deferred register stores. */
2615 target_detach (const char *args
, int from_tty
)
2617 struct target_ops
* t
;
2619 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2620 /* Don't remove global breakpoints here. They're removed on
2621 disconnection from the target. */
2624 /* If we're in breakpoints-always-inserted mode, have to remove
2625 them before detaching. */
2626 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2628 prepare_for_detach ();
2630 current_target
.to_detach (¤t_target
, args
, from_tty
);
2632 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2637 target_disconnect (char *args
, int from_tty
)
2639 struct target_ops
*t
;
2641 /* If we're in breakpoints-always-inserted mode or if breakpoints
2642 are global across processes, we have to remove them before
2644 remove_breakpoints ();
2646 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2647 if (t
->to_disconnect
!= NULL
)
2650 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2652 t
->to_disconnect (t
, args
, from_tty
);
2660 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2662 struct target_ops
*t
;
2663 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2668 char *status_string
;
2669 char *options_string
;
2671 status_string
= target_waitstatus_to_string (status
);
2672 options_string
= target_options_to_string (options
);
2673 fprintf_unfiltered (gdb_stdlog
,
2674 "target_wait (%d, status, options={%s})"
2676 ptid_get_pid (ptid
), options_string
,
2677 ptid_get_pid (retval
), status_string
);
2678 xfree (status_string
);
2679 xfree (options_string
);
2686 target_pid_to_str (ptid_t ptid
)
2688 struct target_ops
*t
;
2690 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2692 if (t
->to_pid_to_str
!= NULL
)
2693 return (*t
->to_pid_to_str
) (t
, ptid
);
2696 return normal_pid_to_str (ptid
);
2700 target_thread_name (struct thread_info
*info
)
2702 struct target_ops
*t
;
2704 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2706 if (t
->to_thread_name
!= NULL
)
2707 return (*t
->to_thread_name
) (t
, info
);
2714 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2716 struct target_ops
*t
;
2718 target_dcache_invalidate ();
2720 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2722 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2723 ptid_get_pid (ptid
),
2724 step
? "step" : "continue",
2725 gdb_signal_to_name (signal
));
2727 registers_changed_ptid (ptid
);
2728 set_executing (ptid
, 1);
2729 set_running (ptid
, 1);
2730 clear_inline_frame_state (ptid
);
2734 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2736 struct target_ops
*t
;
2738 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2740 if (t
->to_pass_signals
!= NULL
)
2746 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2749 for (i
= 0; i
< numsigs
; i
++)
2750 if (pass_signals
[i
])
2751 fprintf_unfiltered (gdb_stdlog
, " %s",
2752 gdb_signal_to_name (i
));
2754 fprintf_unfiltered (gdb_stdlog
, " })\n");
2757 (*t
->to_pass_signals
) (t
, numsigs
, pass_signals
);
2764 target_program_signals (int numsigs
, unsigned char *program_signals
)
2766 struct target_ops
*t
;
2768 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2770 if (t
->to_program_signals
!= NULL
)
2776 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2779 for (i
= 0; i
< numsigs
; i
++)
2780 if (program_signals
[i
])
2781 fprintf_unfiltered (gdb_stdlog
, " %s",
2782 gdb_signal_to_name (i
));
2784 fprintf_unfiltered (gdb_stdlog
, " })\n");
2787 (*t
->to_program_signals
) (t
, numsigs
, program_signals
);
2793 /* Look through the list of possible targets for a target that can
2797 target_follow_fork (int follow_child
, int detach_fork
)
2799 struct target_ops
*t
;
2801 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2803 if (t
->to_follow_fork
!= NULL
)
2805 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2808 fprintf_unfiltered (gdb_stdlog
,
2809 "target_follow_fork (%d, %d) = %d\n",
2810 follow_child
, detach_fork
, retval
);
2815 /* Some target returned a fork event, but did not know how to follow it. */
2816 internal_error (__FILE__
, __LINE__
,
2817 _("could not find a target to follow fork"));
2821 target_mourn_inferior (void)
2823 struct target_ops
*t
;
2825 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2827 if (t
->to_mourn_inferior
!= NULL
)
2829 t
->to_mourn_inferior (t
);
2831 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2833 /* We no longer need to keep handles on any of the object files.
2834 Make sure to release them to avoid unnecessarily locking any
2835 of them while we're not actually debugging. */
2836 bfd_cache_close_all ();
2842 internal_error (__FILE__
, __LINE__
,
2843 _("could not find a target to follow mourn inferior"));
2846 /* Look for a target which can describe architectural features, starting
2847 from TARGET. If we find one, return its description. */
2849 const struct target_desc
*
2850 target_read_description (struct target_ops
*target
)
2852 struct target_ops
*t
;
2854 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2855 if (t
->to_read_description
!= NULL
)
2857 const struct target_desc
*tdesc
;
2859 tdesc
= t
->to_read_description (t
);
2867 /* The default implementation of to_search_memory.
2868 This implements a basic search of memory, reading target memory and
2869 performing the search here (as opposed to performing the search in on the
2870 target side with, for example, gdbserver). */
2873 simple_search_memory (struct target_ops
*ops
,
2874 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2875 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2876 CORE_ADDR
*found_addrp
)
2878 /* NOTE: also defined in find.c testcase. */
2879 #define SEARCH_CHUNK_SIZE 16000
2880 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2881 /* Buffer to hold memory contents for searching. */
2882 gdb_byte
*search_buf
;
2883 unsigned search_buf_size
;
2884 struct cleanup
*old_cleanups
;
2886 search_buf_size
= chunk_size
+ pattern_len
- 1;
2888 /* No point in trying to allocate a buffer larger than the search space. */
2889 if (search_space_len
< search_buf_size
)
2890 search_buf_size
= search_space_len
;
2892 search_buf
= malloc (search_buf_size
);
2893 if (search_buf
== NULL
)
2894 error (_("Unable to allocate memory to perform the search."));
2895 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2897 /* Prime the search buffer. */
2899 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2900 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2902 warning (_("Unable to access %s bytes of target "
2903 "memory at %s, halting search."),
2904 pulongest (search_buf_size
), hex_string (start_addr
));
2905 do_cleanups (old_cleanups
);
2909 /* Perform the search.
2911 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2912 When we've scanned N bytes we copy the trailing bytes to the start and
2913 read in another N bytes. */
2915 while (search_space_len
>= pattern_len
)
2917 gdb_byte
*found_ptr
;
2918 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2920 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2921 pattern
, pattern_len
);
2923 if (found_ptr
!= NULL
)
2925 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2927 *found_addrp
= found_addr
;
2928 do_cleanups (old_cleanups
);
2932 /* Not found in this chunk, skip to next chunk. */
2934 /* Don't let search_space_len wrap here, it's unsigned. */
2935 if (search_space_len
>= chunk_size
)
2936 search_space_len
-= chunk_size
;
2938 search_space_len
= 0;
2940 if (search_space_len
>= pattern_len
)
2942 unsigned keep_len
= search_buf_size
- chunk_size
;
2943 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2946 /* Copy the trailing part of the previous iteration to the front
2947 of the buffer for the next iteration. */
2948 gdb_assert (keep_len
== pattern_len
- 1);
2949 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2951 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2953 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2954 search_buf
+ keep_len
, read_addr
,
2955 nr_to_read
) != nr_to_read
)
2957 warning (_("Unable to access %s bytes of target "
2958 "memory at %s, halting search."),
2959 plongest (nr_to_read
),
2960 hex_string (read_addr
));
2961 do_cleanups (old_cleanups
);
2965 start_addr
+= chunk_size
;
2971 do_cleanups (old_cleanups
);
2975 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2976 sequence of bytes in PATTERN with length PATTERN_LEN.
2978 The result is 1 if found, 0 if not found, and -1 if there was an error
2979 requiring halting of the search (e.g. memory read error).
2980 If the pattern is found the address is recorded in FOUND_ADDRP. */
2983 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2984 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2985 CORE_ADDR
*found_addrp
)
2987 struct target_ops
*t
;
2990 /* We don't use INHERIT to set current_target.to_search_memory,
2991 so we have to scan the target stack and handle targetdebug
2995 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2996 hex_string (start_addr
));
2998 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2999 if (t
->to_search_memory
!= NULL
)
3004 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
3005 pattern
, pattern_len
, found_addrp
);
3009 /* If a special version of to_search_memory isn't available, use the
3011 found
= simple_search_memory (current_target
.beneath
,
3012 start_addr
, search_space_len
,
3013 pattern
, pattern_len
, found_addrp
);
3017 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
3022 /* Look through the currently pushed targets. If none of them will
3023 be able to restart the currently running process, issue an error
3027 target_require_runnable (void)
3029 struct target_ops
*t
;
3031 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3033 /* If this target knows how to create a new program, then
3034 assume we will still be able to after killing the current
3035 one. Either killing and mourning will not pop T, or else
3036 find_default_run_target will find it again. */
3037 if (t
->to_create_inferior
!= NULL
)
3040 /* Do not worry about thread_stratum targets that can not
3041 create inferiors. Assume they will be pushed again if
3042 necessary, and continue to the process_stratum. */
3043 if (t
->to_stratum
== thread_stratum
3044 || t
->to_stratum
== arch_stratum
)
3047 error (_("The \"%s\" target does not support \"run\". "
3048 "Try \"help target\" or \"continue\"."),
3052 /* This function is only called if the target is running. In that
3053 case there should have been a process_stratum target and it
3054 should either know how to create inferiors, or not... */
3055 internal_error (__FILE__
, __LINE__
, _("No targets found"));
3058 /* Look through the list of possible targets for a target that can
3059 execute a run or attach command without any other data. This is
3060 used to locate the default process stratum.
3062 If DO_MESG is not NULL, the result is always valid (error() is
3063 called for errors); else, return NULL on error. */
3065 static struct target_ops
*
3066 find_default_run_target (char *do_mesg
)
3068 struct target_ops
**t
;
3069 struct target_ops
*runable
= NULL
;
3074 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3077 if ((*t
)->to_can_run
&& target_can_run (*t
))
3087 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3096 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3098 struct target_ops
*t
;
3100 t
= find_default_run_target ("attach");
3101 (t
->to_attach
) (t
, args
, from_tty
);
3106 find_default_create_inferior (struct target_ops
*ops
,
3107 char *exec_file
, char *allargs
, char **env
,
3110 struct target_ops
*t
;
3112 t
= find_default_run_target ("run");
3113 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3118 find_default_can_async_p (struct target_ops
*ignore
)
3120 struct target_ops
*t
;
3122 /* This may be called before the target is pushed on the stack;
3123 look for the default process stratum. If there's none, gdb isn't
3124 configured with a native debugger, and target remote isn't
3126 t
= find_default_run_target (NULL
);
3127 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
3128 return (t
->to_can_async_p
) (t
);
3133 find_default_is_async_p (struct target_ops
*ignore
)
3135 struct target_ops
*t
;
3137 /* This may be called before the target is pushed on the stack;
3138 look for the default process stratum. If there's none, gdb isn't
3139 configured with a native debugger, and target remote isn't
3141 t
= find_default_run_target (NULL
);
3142 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
3143 return (t
->to_is_async_p
) (t
);
3148 find_default_supports_non_stop (struct target_ops
*self
)
3150 struct target_ops
*t
;
3152 t
= find_default_run_target (NULL
);
3153 if (t
&& t
->to_supports_non_stop
)
3154 return (t
->to_supports_non_stop
) (t
);
3159 target_supports_non_stop (void)
3161 struct target_ops
*t
;
3163 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3164 if (t
->to_supports_non_stop
)
3165 return t
->to_supports_non_stop (t
);
3170 /* Implement the "info proc" command. */
3173 target_info_proc (char *args
, enum info_proc_what what
)
3175 struct target_ops
*t
;
3177 /* If we're already connected to something that can get us OS
3178 related data, use it. Otherwise, try using the native
3180 if (current_target
.to_stratum
>= process_stratum
)
3181 t
= current_target
.beneath
;
3183 t
= find_default_run_target (NULL
);
3185 for (; t
!= NULL
; t
= t
->beneath
)
3187 if (t
->to_info_proc
!= NULL
)
3189 t
->to_info_proc (t
, args
, what
);
3192 fprintf_unfiltered (gdb_stdlog
,
3193 "target_info_proc (\"%s\", %d)\n", args
, what
);
3203 find_default_supports_disable_randomization (struct target_ops
*self
)
3205 struct target_ops
*t
;
3207 t
= find_default_run_target (NULL
);
3208 if (t
&& t
->to_supports_disable_randomization
)
3209 return (t
->to_supports_disable_randomization
) (t
);
3214 target_supports_disable_randomization (void)
3216 struct target_ops
*t
;
3218 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3219 if (t
->to_supports_disable_randomization
)
3220 return t
->to_supports_disable_randomization (t
);
3226 target_get_osdata (const char *type
)
3228 struct target_ops
*t
;
3230 /* If we're already connected to something that can get us OS
3231 related data, use it. Otherwise, try using the native
3233 if (current_target
.to_stratum
>= process_stratum
)
3234 t
= current_target
.beneath
;
3236 t
= find_default_run_target ("get OS data");
3241 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3244 /* Determine the current address space of thread PTID. */
3246 struct address_space
*
3247 target_thread_address_space (ptid_t ptid
)
3249 struct address_space
*aspace
;
3250 struct inferior
*inf
;
3251 struct target_ops
*t
;
3253 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3255 if (t
->to_thread_address_space
!= NULL
)
3257 aspace
= t
->to_thread_address_space (t
, ptid
);
3258 gdb_assert (aspace
);
3261 fprintf_unfiltered (gdb_stdlog
,
3262 "target_thread_address_space (%s) = %d\n",
3263 target_pid_to_str (ptid
),
3264 address_space_num (aspace
));
3269 /* Fall-back to the "main" address space of the inferior. */
3270 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3272 if (inf
== NULL
|| inf
->aspace
== NULL
)
3273 internal_error (__FILE__
, __LINE__
,
3274 _("Can't determine the current "
3275 "address space of thread %s\n"),
3276 target_pid_to_str (ptid
));
3282 /* Target file operations. */
3284 static struct target_ops
*
3285 default_fileio_target (void)
3287 /* If we're already connected to something that can perform
3288 file I/O, use it. Otherwise, try using the native target. */
3289 if (current_target
.to_stratum
>= process_stratum
)
3290 return current_target
.beneath
;
3292 return find_default_run_target ("file I/O");
3295 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3296 target file descriptor, or -1 if an error occurs (and set
3299 target_fileio_open (const char *filename
, int flags
, int mode
,
3302 struct target_ops
*t
;
3304 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3306 if (t
->to_fileio_open
!= NULL
)
3308 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3311 fprintf_unfiltered (gdb_stdlog
,
3312 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3313 filename
, flags
, mode
,
3314 fd
, fd
!= -1 ? 0 : *target_errno
);
3319 *target_errno
= FILEIO_ENOSYS
;
3323 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3324 Return the number of bytes written, or -1 if an error occurs
3325 (and set *TARGET_ERRNO). */
3327 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3328 ULONGEST offset
, int *target_errno
)
3330 struct target_ops
*t
;
3332 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3334 if (t
->to_fileio_pwrite
!= NULL
)
3336 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3340 fprintf_unfiltered (gdb_stdlog
,
3341 "target_fileio_pwrite (%d,...,%d,%s) "
3343 fd
, len
, pulongest (offset
),
3344 ret
, ret
!= -1 ? 0 : *target_errno
);
3349 *target_errno
= FILEIO_ENOSYS
;
3353 /* Read up to LEN bytes FD on the target into READ_BUF.
3354 Return the number of bytes read, or -1 if an error occurs
3355 (and set *TARGET_ERRNO). */
3357 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3358 ULONGEST offset
, int *target_errno
)
3360 struct target_ops
*t
;
3362 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3364 if (t
->to_fileio_pread
!= NULL
)
3366 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3370 fprintf_unfiltered (gdb_stdlog
,
3371 "target_fileio_pread (%d,...,%d,%s) "
3373 fd
, len
, pulongest (offset
),
3374 ret
, ret
!= -1 ? 0 : *target_errno
);
3379 *target_errno
= FILEIO_ENOSYS
;
3383 /* Close FD on the target. Return 0, or -1 if an error occurs
3384 (and set *TARGET_ERRNO). */
3386 target_fileio_close (int fd
, int *target_errno
)
3388 struct target_ops
*t
;
3390 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3392 if (t
->to_fileio_close
!= NULL
)
3394 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3397 fprintf_unfiltered (gdb_stdlog
,
3398 "target_fileio_close (%d) = %d (%d)\n",
3399 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3404 *target_errno
= FILEIO_ENOSYS
;
3408 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3409 occurs (and set *TARGET_ERRNO). */
3411 target_fileio_unlink (const char *filename
, int *target_errno
)
3413 struct target_ops
*t
;
3415 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3417 if (t
->to_fileio_unlink
!= NULL
)
3419 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3422 fprintf_unfiltered (gdb_stdlog
,
3423 "target_fileio_unlink (%s) = %d (%d)\n",
3424 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3429 *target_errno
= FILEIO_ENOSYS
;
3433 /* Read value of symbolic link FILENAME on the target. Return a
3434 null-terminated string allocated via xmalloc, or NULL if an error
3435 occurs (and set *TARGET_ERRNO). */
3437 target_fileio_readlink (const char *filename
, int *target_errno
)
3439 struct target_ops
*t
;
3441 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3443 if (t
->to_fileio_readlink
!= NULL
)
3445 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3448 fprintf_unfiltered (gdb_stdlog
,
3449 "target_fileio_readlink (%s) = %s (%d)\n",
3450 filename
, ret
? ret
: "(nil)",
3451 ret
? 0 : *target_errno
);
3456 *target_errno
= FILEIO_ENOSYS
;
3461 target_fileio_close_cleanup (void *opaque
)
3463 int fd
= *(int *) opaque
;
3466 target_fileio_close (fd
, &target_errno
);
3469 /* Read target file FILENAME. Store the result in *BUF_P and
3470 return the size of the transferred data. PADDING additional bytes are
3471 available in *BUF_P. This is a helper function for
3472 target_fileio_read_alloc; see the declaration of that function for more
3476 target_fileio_read_alloc_1 (const char *filename
,
3477 gdb_byte
**buf_p
, int padding
)
3479 struct cleanup
*close_cleanup
;
3480 size_t buf_alloc
, buf_pos
;
3486 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3490 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3492 /* Start by reading up to 4K at a time. The target will throttle
3493 this number down if necessary. */
3495 buf
= xmalloc (buf_alloc
);
3499 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3500 buf_alloc
- buf_pos
- padding
, buf_pos
,
3504 /* An error occurred. */
3505 do_cleanups (close_cleanup
);
3511 /* Read all there was. */
3512 do_cleanups (close_cleanup
);
3522 /* If the buffer is filling up, expand it. */
3523 if (buf_alloc
< buf_pos
* 2)
3526 buf
= xrealloc (buf
, buf_alloc
);
3533 /* Read target file FILENAME. Store the result in *BUF_P and return
3534 the size of the transferred data. See the declaration in "target.h"
3535 function for more information about the return value. */
3538 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3540 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3543 /* Read target file FILENAME. The result is NUL-terminated and
3544 returned as a string, allocated using xmalloc. If an error occurs
3545 or the transfer is unsupported, NULL is returned. Empty objects
3546 are returned as allocated but empty strings. A warning is issued
3547 if the result contains any embedded NUL bytes. */
3550 target_fileio_read_stralloc (const char *filename
)
3554 LONGEST i
, transferred
;
3556 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3557 bufstr
= (char *) buffer
;
3559 if (transferred
< 0)
3562 if (transferred
== 0)
3563 return xstrdup ("");
3565 bufstr
[transferred
] = 0;
3567 /* Check for embedded NUL bytes; but allow trailing NULs. */
3568 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3571 warning (_("target file %s "
3572 "contained unexpected null characters"),
3582 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3583 CORE_ADDR addr
, int len
)
3585 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3589 default_watchpoint_addr_within_range (struct target_ops
*target
,
3591 CORE_ADDR start
, int length
)
3593 return addr
>= start
&& addr
< start
+ length
;
3596 static struct gdbarch
*
3597 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3599 return target_gdbarch ();
3615 return_minus_one (void)
3627 * Find the next target down the stack from the specified target.
3631 find_target_beneath (struct target_ops
*t
)
3639 find_target_at (enum strata stratum
)
3641 struct target_ops
*t
;
3643 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3644 if (t
->to_stratum
== stratum
)
3651 /* The inferior process has died. Long live the inferior! */
3654 generic_mourn_inferior (void)
3658 ptid
= inferior_ptid
;
3659 inferior_ptid
= null_ptid
;
3661 /* Mark breakpoints uninserted in case something tries to delete a
3662 breakpoint while we delete the inferior's threads (which would
3663 fail, since the inferior is long gone). */
3664 mark_breakpoints_out ();
3666 if (!ptid_equal (ptid
, null_ptid
))
3668 int pid
= ptid_get_pid (ptid
);
3669 exit_inferior (pid
);
3672 /* Note this wipes step-resume breakpoints, so needs to be done
3673 after exit_inferior, which ends up referencing the step-resume
3674 breakpoints through clear_thread_inferior_resources. */
3675 breakpoint_init_inferior (inf_exited
);
3677 registers_changed ();
3679 reopen_exec_file ();
3680 reinit_frame_cache ();
3682 if (deprecated_detach_hook
)
3683 deprecated_detach_hook ();
3686 /* Convert a normal process ID to a string. Returns the string in a
3690 normal_pid_to_str (ptid_t ptid
)
3692 static char buf
[32];
3694 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3699 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3701 return normal_pid_to_str (ptid
);
3704 /* Error-catcher for target_find_memory_regions. */
3706 dummy_find_memory_regions (struct target_ops
*self
,
3707 find_memory_region_ftype ignore1
, void *ignore2
)
3709 error (_("Command not implemented for this target."));
3713 /* Error-catcher for target_make_corefile_notes. */
3715 dummy_make_corefile_notes (struct target_ops
*self
,
3716 bfd
*ignore1
, int *ignore2
)
3718 error (_("Command not implemented for this target."));
3722 /* Error-catcher for target_get_bookmark. */
3724 dummy_get_bookmark (struct target_ops
*self
, char *ignore1
, int ignore2
)
3730 /* Error-catcher for target_goto_bookmark. */
3732 dummy_goto_bookmark (struct target_ops
*self
, gdb_byte
*ignore
, int from_tty
)
3737 /* Set up the handful of non-empty slots needed by the dummy target
3741 init_dummy_target (void)
3743 dummy_target
.to_shortname
= "None";
3744 dummy_target
.to_longname
= "None";
3745 dummy_target
.to_doc
= "";
3746 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3747 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3748 dummy_target
.to_supports_disable_randomization
3749 = find_default_supports_disable_randomization
;
3750 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3751 dummy_target
.to_stratum
= dummy_stratum
;
3752 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
3753 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
3754 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
3755 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
3756 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3757 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3758 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3759 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3760 dummy_target
.to_has_execution
3761 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3762 dummy_target
.to_magic
= OPS_MAGIC
;
3764 install_dummy_methods (&dummy_target
);
3768 debug_to_open (char *args
, int from_tty
)
3770 debug_target
.to_open (args
, from_tty
);
3772 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3776 target_close (struct target_ops
*targ
)
3778 gdb_assert (!target_is_pushed (targ
));
3780 if (targ
->to_xclose
!= NULL
)
3781 targ
->to_xclose (targ
);
3782 else if (targ
->to_close
!= NULL
)
3783 targ
->to_close (targ
);
3786 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3790 target_attach (char *args
, int from_tty
)
3792 current_target
.to_attach (¤t_target
, args
, from_tty
);
3794 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3799 target_thread_alive (ptid_t ptid
)
3801 struct target_ops
*t
;
3803 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3805 if (t
->to_thread_alive
!= NULL
)
3809 retval
= t
->to_thread_alive (t
, ptid
);
3811 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3812 ptid_get_pid (ptid
), retval
);
3822 target_find_new_threads (void)
3824 struct target_ops
*t
;
3826 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3828 if (t
->to_find_new_threads
!= NULL
)
3830 t
->to_find_new_threads (t
);
3832 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3840 target_stop (ptid_t ptid
)
3844 warning (_("May not interrupt or stop the target, ignoring attempt"));
3848 (*current_target
.to_stop
) (¤t_target
, ptid
);
3852 debug_to_post_attach (struct target_ops
*self
, int pid
)
3854 debug_target
.to_post_attach (&debug_target
, pid
);
3856 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3859 /* Concatenate ELEM to LIST, a comma separate list, and return the
3860 result. The LIST incoming argument is released. */
3863 str_comma_list_concat_elem (char *list
, const char *elem
)
3866 return xstrdup (elem
);
3868 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3871 /* Helper for target_options_to_string. If OPT is present in
3872 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3873 Returns the new resulting string. OPT is removed from
3877 do_option (int *target_options
, char *ret
,
3878 int opt
, char *opt_str
)
3880 if ((*target_options
& opt
) != 0)
3882 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3883 *target_options
&= ~opt
;
3890 target_options_to_string (int target_options
)
3894 #define DO_TARG_OPTION(OPT) \
3895 ret = do_option (&target_options, ret, OPT, #OPT)
3897 DO_TARG_OPTION (TARGET_WNOHANG
);
3899 if (target_options
!= 0)
3900 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3908 debug_print_register (const char * func
,
3909 struct regcache
*regcache
, int regno
)
3911 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3913 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3914 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3915 && gdbarch_register_name (gdbarch
, regno
) != NULL
3916 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3917 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3918 gdbarch_register_name (gdbarch
, regno
));
3920 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3921 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3923 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3924 int i
, size
= register_size (gdbarch
, regno
);
3925 gdb_byte buf
[MAX_REGISTER_SIZE
];
3927 regcache_raw_collect (regcache
, regno
, buf
);
3928 fprintf_unfiltered (gdb_stdlog
, " = ");
3929 for (i
= 0; i
< size
; i
++)
3931 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3933 if (size
<= sizeof (LONGEST
))
3935 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3937 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3938 core_addr_to_string_nz (val
), plongest (val
));
3941 fprintf_unfiltered (gdb_stdlog
, "\n");
3945 target_fetch_registers (struct regcache
*regcache
, int regno
)
3947 struct target_ops
*t
;
3949 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3951 if (t
->to_fetch_registers
!= NULL
)
3953 t
->to_fetch_registers (t
, regcache
, regno
);
3955 debug_print_register ("target_fetch_registers", regcache
, regno
);
3962 target_store_registers (struct regcache
*regcache
, int regno
)
3964 struct target_ops
*t
;
3966 if (!may_write_registers
)
3967 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3969 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3972 debug_print_register ("target_store_registers", regcache
, regno
);
3977 target_core_of_thread (ptid_t ptid
)
3979 struct target_ops
*t
;
3981 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3983 if (t
->to_core_of_thread
!= NULL
)
3985 int retval
= t
->to_core_of_thread (t
, ptid
);
3988 fprintf_unfiltered (gdb_stdlog
,
3989 "target_core_of_thread (%d) = %d\n",
3990 ptid_get_pid (ptid
), retval
);
3999 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
4001 struct target_ops
*t
;
4003 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4005 if (t
->to_verify_memory
!= NULL
)
4007 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
4010 fprintf_unfiltered (gdb_stdlog
,
4011 "target_verify_memory (%s, %s) = %d\n",
4012 paddress (target_gdbarch (), memaddr
),
4022 /* The documentation for this function is in its prototype declaration in
4026 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4028 struct target_ops
*t
;
4030 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4031 if (t
->to_insert_mask_watchpoint
!= NULL
)
4035 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
4038 fprintf_unfiltered (gdb_stdlog
, "\
4039 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
4040 core_addr_to_string (addr
),
4041 core_addr_to_string (mask
), rw
, ret
);
4049 /* The documentation for this function is in its prototype declaration in
4053 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4055 struct target_ops
*t
;
4057 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4058 if (t
->to_remove_mask_watchpoint
!= NULL
)
4062 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
4065 fprintf_unfiltered (gdb_stdlog
, "\
4066 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
4067 core_addr_to_string (addr
),
4068 core_addr_to_string (mask
), rw
, ret
);
4076 /* The documentation for this function is in its prototype declaration
4080 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4082 struct target_ops
*t
;
4084 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4085 if (t
->to_masked_watch_num_registers
!= NULL
)
4086 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4091 /* The documentation for this function is in its prototype declaration
4095 target_ranged_break_num_registers (void)
4097 struct target_ops
*t
;
4099 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4100 if (t
->to_ranged_break_num_registers
!= NULL
)
4101 return t
->to_ranged_break_num_registers (t
);
4108 struct btrace_target_info
*
4109 target_enable_btrace (ptid_t ptid
)
4111 struct target_ops
*t
;
4113 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4114 if (t
->to_enable_btrace
!= NULL
)
4115 return t
->to_enable_btrace (t
, ptid
);
4124 target_disable_btrace (struct btrace_target_info
*btinfo
)
4126 struct target_ops
*t
;
4128 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4129 if (t
->to_disable_btrace
!= NULL
)
4131 t
->to_disable_btrace (t
, btinfo
);
4141 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4143 struct target_ops
*t
;
4145 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4146 if (t
->to_teardown_btrace
!= NULL
)
4148 t
->to_teardown_btrace (t
, btinfo
);
4158 target_read_btrace (VEC (btrace_block_s
) **btrace
,
4159 struct btrace_target_info
*btinfo
,
4160 enum btrace_read_type type
)
4162 struct target_ops
*t
;
4164 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4165 if (t
->to_read_btrace
!= NULL
)
4166 return t
->to_read_btrace (t
, btrace
, btinfo
, type
);
4169 return BTRACE_ERR_NOT_SUPPORTED
;
4175 target_stop_recording (void)
4177 struct target_ops
*t
;
4179 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4180 if (t
->to_stop_recording
!= NULL
)
4182 t
->to_stop_recording (t
);
4186 /* This is optional. */
4192 target_info_record (void)
4194 struct target_ops
*t
;
4196 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4197 if (t
->to_info_record
!= NULL
)
4199 t
->to_info_record (t
);
4209 target_save_record (const char *filename
)
4211 struct target_ops
*t
;
4213 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4214 if (t
->to_save_record
!= NULL
)
4216 t
->to_save_record (t
, filename
);
4226 target_supports_delete_record (void)
4228 struct target_ops
*t
;
4230 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4231 if (t
->to_delete_record
!= NULL
)
4240 target_delete_record (void)
4242 struct target_ops
*t
;
4244 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4245 if (t
->to_delete_record
!= NULL
)
4247 t
->to_delete_record (t
);
4257 target_record_is_replaying (void)
4259 struct target_ops
*t
;
4261 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4262 if (t
->to_record_is_replaying
!= NULL
)
4263 return t
->to_record_is_replaying (t
);
4271 target_goto_record_begin (void)
4273 struct target_ops
*t
;
4275 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4276 if (t
->to_goto_record_begin
!= NULL
)
4278 t
->to_goto_record_begin (t
);
4288 target_goto_record_end (void)
4290 struct target_ops
*t
;
4292 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4293 if (t
->to_goto_record_end
!= NULL
)
4295 t
->to_goto_record_end (t
);
4305 target_goto_record (ULONGEST insn
)
4307 struct target_ops
*t
;
4309 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4310 if (t
->to_goto_record
!= NULL
)
4312 t
->to_goto_record (t
, insn
);
4322 target_insn_history (int size
, int flags
)
4324 struct target_ops
*t
;
4326 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4327 if (t
->to_insn_history
!= NULL
)
4329 t
->to_insn_history (t
, size
, flags
);
4339 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4341 struct target_ops
*t
;
4343 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4344 if (t
->to_insn_history_from
!= NULL
)
4346 t
->to_insn_history_from (t
, from
, size
, flags
);
4356 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4358 struct target_ops
*t
;
4360 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4361 if (t
->to_insn_history_range
!= NULL
)
4363 t
->to_insn_history_range (t
, begin
, end
, flags
);
4373 target_call_history (int size
, int flags
)
4375 struct target_ops
*t
;
4377 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4378 if (t
->to_call_history
!= NULL
)
4380 t
->to_call_history (t
, size
, flags
);
4390 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4392 struct target_ops
*t
;
4394 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4395 if (t
->to_call_history_from
!= NULL
)
4397 t
->to_call_history_from (t
, begin
, size
, flags
);
4407 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4409 struct target_ops
*t
;
4411 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4412 if (t
->to_call_history_range
!= NULL
)
4414 t
->to_call_history_range (t
, begin
, end
, flags
);
4422 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
4424 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
4426 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4431 const struct frame_unwind
*
4432 target_get_unwinder (void)
4434 struct target_ops
*t
;
4436 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4437 if (t
->to_get_unwinder
!= NULL
)
4438 return t
->to_get_unwinder
;
4445 const struct frame_unwind
*
4446 target_get_tailcall_unwinder (void)
4448 struct target_ops
*t
;
4450 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4451 if (t
->to_get_tailcall_unwinder
!= NULL
)
4452 return t
->to_get_tailcall_unwinder
;
4460 forward_target_decr_pc_after_break (struct target_ops
*ops
,
4461 struct gdbarch
*gdbarch
)
4463 for (; ops
!= NULL
; ops
= ops
->beneath
)
4464 if (ops
->to_decr_pc_after_break
!= NULL
)
4465 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
4467 return gdbarch_decr_pc_after_break (gdbarch
);
4473 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
4475 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
4479 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4480 int write
, struct mem_attrib
*attrib
,
4481 struct target_ops
*target
)
4485 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4488 fprintf_unfiltered (gdb_stdlog
,
4489 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4490 paddress (target_gdbarch (), memaddr
), len
,
4491 write
? "write" : "read", retval
);
4497 fputs_unfiltered (", bytes =", gdb_stdlog
);
4498 for (i
= 0; i
< retval
; i
++)
4500 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4502 if (targetdebug
< 2 && i
> 0)
4504 fprintf_unfiltered (gdb_stdlog
, " ...");
4507 fprintf_unfiltered (gdb_stdlog
, "\n");
4510 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4514 fputc_unfiltered ('\n', gdb_stdlog
);
4520 debug_to_files_info (struct target_ops
*target
)
4522 debug_target
.to_files_info (target
);
4524 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4528 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4529 struct bp_target_info
*bp_tgt
)
4533 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4535 fprintf_unfiltered (gdb_stdlog
,
4536 "target_insert_breakpoint (%s, xxx) = %ld\n",
4537 core_addr_to_string (bp_tgt
->placed_address
),
4538 (unsigned long) retval
);
4543 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4544 struct bp_target_info
*bp_tgt
)
4548 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4550 fprintf_unfiltered (gdb_stdlog
,
4551 "target_remove_breakpoint (%s, xxx) = %ld\n",
4552 core_addr_to_string (bp_tgt
->placed_address
),
4553 (unsigned long) retval
);
4558 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4559 int type
, int cnt
, int from_tty
)
4563 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4564 type
, cnt
, from_tty
);
4566 fprintf_unfiltered (gdb_stdlog
,
4567 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4568 (unsigned long) type
,
4569 (unsigned long) cnt
,
4570 (unsigned long) from_tty
,
4571 (unsigned long) retval
);
4576 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4577 CORE_ADDR addr
, int len
)
4581 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4584 fprintf_unfiltered (gdb_stdlog
,
4585 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4586 core_addr_to_string (addr
), (unsigned long) len
,
4587 core_addr_to_string (retval
));
4592 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4593 CORE_ADDR addr
, int len
, int rw
,
4594 struct expression
*cond
)
4598 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4602 fprintf_unfiltered (gdb_stdlog
,
4603 "target_can_accel_watchpoint_condition "
4604 "(%s, %d, %d, %s) = %ld\n",
4605 core_addr_to_string (addr
), len
, rw
,
4606 host_address_to_string (cond
), (unsigned long) retval
);
4611 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4615 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4617 fprintf_unfiltered (gdb_stdlog
,
4618 "target_stopped_by_watchpoint () = %ld\n",
4619 (unsigned long) retval
);
4624 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4628 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4630 fprintf_unfiltered (gdb_stdlog
,
4631 "target_stopped_data_address ([%s]) = %ld\n",
4632 core_addr_to_string (*addr
),
4633 (unsigned long)retval
);
4638 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4640 CORE_ADDR start
, int length
)
4644 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4647 fprintf_filtered (gdb_stdlog
,
4648 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4649 core_addr_to_string (addr
), core_addr_to_string (start
),
4655 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4656 struct gdbarch
*gdbarch
,
4657 struct bp_target_info
*bp_tgt
)
4661 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4664 fprintf_unfiltered (gdb_stdlog
,
4665 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4666 core_addr_to_string (bp_tgt
->placed_address
),
4667 (unsigned long) retval
);
4672 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4673 struct gdbarch
*gdbarch
,
4674 struct bp_target_info
*bp_tgt
)
4678 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4681 fprintf_unfiltered (gdb_stdlog
,
4682 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4683 core_addr_to_string (bp_tgt
->placed_address
),
4684 (unsigned long) retval
);
4689 debug_to_insert_watchpoint (struct target_ops
*self
,
4690 CORE_ADDR addr
, int len
, int type
,
4691 struct expression
*cond
)
4695 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4696 addr
, len
, type
, cond
);
4698 fprintf_unfiltered (gdb_stdlog
,
4699 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4700 core_addr_to_string (addr
), len
, type
,
4701 host_address_to_string (cond
), (unsigned long) retval
);
4706 debug_to_remove_watchpoint (struct target_ops
*self
,
4707 CORE_ADDR addr
, int len
, int type
,
4708 struct expression
*cond
)
4712 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4713 addr
, len
, type
, cond
);
4715 fprintf_unfiltered (gdb_stdlog
,
4716 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4717 core_addr_to_string (addr
), len
, type
,
4718 host_address_to_string (cond
), (unsigned long) retval
);
4723 debug_to_terminal_init (struct target_ops
*self
)
4725 debug_target
.to_terminal_init (&debug_target
);
4727 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4731 debug_to_terminal_inferior (struct target_ops
*self
)
4733 debug_target
.to_terminal_inferior (&debug_target
);
4735 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4739 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4741 debug_target
.to_terminal_ours_for_output (&debug_target
);
4743 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4747 debug_to_terminal_ours (struct target_ops
*self
)
4749 debug_target
.to_terminal_ours (&debug_target
);
4751 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4755 debug_to_terminal_save_ours (struct target_ops
*self
)
4757 debug_target
.to_terminal_save_ours (&debug_target
);
4759 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4763 debug_to_terminal_info (struct target_ops
*self
,
4764 const char *arg
, int from_tty
)
4766 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4768 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4773 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4775 debug_target
.to_load (&debug_target
, args
, from_tty
);
4777 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4781 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4783 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4785 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4786 ptid_get_pid (ptid
));
4790 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4794 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4796 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4803 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4807 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4809 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4816 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4820 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4822 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4829 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4833 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4835 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4842 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4846 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4848 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4855 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4859 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4861 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4868 debug_to_has_exited (struct target_ops
*self
,
4869 int pid
, int wait_status
, int *exit_status
)
4873 has_exited
= debug_target
.to_has_exited (&debug_target
,
4874 pid
, wait_status
, exit_status
);
4876 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4877 pid
, wait_status
, *exit_status
, has_exited
);
4883 debug_to_can_run (struct target_ops
*self
)
4887 retval
= debug_target
.to_can_run (&debug_target
);
4889 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4894 static struct gdbarch
*
4895 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4897 struct gdbarch
*retval
;
4899 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4901 fprintf_unfiltered (gdb_stdlog
,
4902 "target_thread_architecture (%s) = %s [%s]\n",
4903 target_pid_to_str (ptid
),
4904 host_address_to_string (retval
),
4905 gdbarch_bfd_arch_info (retval
)->printable_name
);
4910 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4912 debug_target
.to_stop (&debug_target
, ptid
);
4914 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4915 target_pid_to_str (ptid
));
4919 debug_to_rcmd (struct target_ops
*self
, char *command
,
4920 struct ui_file
*outbuf
)
4922 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4923 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4927 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4931 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4933 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4940 setup_target_debug (void)
4942 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4944 current_target
.to_open
= debug_to_open
;
4945 current_target
.to_post_attach
= debug_to_post_attach
;
4946 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4947 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4948 current_target
.to_files_info
= debug_to_files_info
;
4949 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4950 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4951 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4952 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4953 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4954 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4955 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4956 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4957 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4958 current_target
.to_watchpoint_addr_within_range
4959 = debug_to_watchpoint_addr_within_range
;
4960 current_target
.to_region_ok_for_hw_watchpoint
4961 = debug_to_region_ok_for_hw_watchpoint
;
4962 current_target
.to_can_accel_watchpoint_condition
4963 = debug_to_can_accel_watchpoint_condition
;
4964 current_target
.to_terminal_init
= debug_to_terminal_init
;
4965 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4966 current_target
.to_terminal_ours_for_output
4967 = debug_to_terminal_ours_for_output
;
4968 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4969 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4970 current_target
.to_terminal_info
= debug_to_terminal_info
;
4971 current_target
.to_load
= debug_to_load
;
4972 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4973 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4974 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4975 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4976 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4977 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4978 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4979 current_target
.to_has_exited
= debug_to_has_exited
;
4980 current_target
.to_can_run
= debug_to_can_run
;
4981 current_target
.to_stop
= debug_to_stop
;
4982 current_target
.to_rcmd
= debug_to_rcmd
;
4983 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4984 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4988 static char targ_desc
[] =
4989 "Names of targets and files being debugged.\nShows the entire \
4990 stack of targets currently in use (including the exec-file,\n\
4991 core-file, and process, if any), as well as the symbol file name.";
4994 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4996 error (_("\"monitor\" command not supported by this target."));
5000 do_monitor_command (char *cmd
,
5003 target_rcmd (cmd
, gdb_stdtarg
);
5006 /* Print the name of each layers of our target stack. */
5009 maintenance_print_target_stack (char *cmd
, int from_tty
)
5011 struct target_ops
*t
;
5013 printf_filtered (_("The current target stack is:\n"));
5015 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
5017 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
5021 /* Controls if async mode is permitted. */
5022 int target_async_permitted
= 0;
5024 /* The set command writes to this variable. If the inferior is
5025 executing, target_async_permitted is *not* updated. */
5026 static int target_async_permitted_1
= 0;
5029 set_target_async_command (char *args
, int from_tty
,
5030 struct cmd_list_element
*c
)
5032 if (have_live_inferiors ())
5034 target_async_permitted_1
= target_async_permitted
;
5035 error (_("Cannot change this setting while the inferior is running."));
5038 target_async_permitted
= target_async_permitted_1
;
5042 show_target_async_command (struct ui_file
*file
, int from_tty
,
5043 struct cmd_list_element
*c
,
5046 fprintf_filtered (file
,
5047 _("Controlling the inferior in "
5048 "asynchronous mode is %s.\n"), value
);
5051 /* Temporary copies of permission settings. */
5053 static int may_write_registers_1
= 1;
5054 static int may_write_memory_1
= 1;
5055 static int may_insert_breakpoints_1
= 1;
5056 static int may_insert_tracepoints_1
= 1;
5057 static int may_insert_fast_tracepoints_1
= 1;
5058 static int may_stop_1
= 1;
5060 /* Make the user-set values match the real values again. */
5063 update_target_permissions (void)
5065 may_write_registers_1
= may_write_registers
;
5066 may_write_memory_1
= may_write_memory
;
5067 may_insert_breakpoints_1
= may_insert_breakpoints
;
5068 may_insert_tracepoints_1
= may_insert_tracepoints
;
5069 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
5070 may_stop_1
= may_stop
;
5073 /* The one function handles (most of) the permission flags in the same
5077 set_target_permissions (char *args
, int from_tty
,
5078 struct cmd_list_element
*c
)
5080 if (target_has_execution
)
5082 update_target_permissions ();
5083 error (_("Cannot change this setting while the inferior is running."));
5086 /* Make the real values match the user-changed values. */
5087 may_write_registers
= may_write_registers_1
;
5088 may_insert_breakpoints
= may_insert_breakpoints_1
;
5089 may_insert_tracepoints
= may_insert_tracepoints_1
;
5090 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
5091 may_stop
= may_stop_1
;
5092 update_observer_mode ();
5095 /* Set memory write permission independently of observer mode. */
5098 set_write_memory_permission (char *args
, int from_tty
,
5099 struct cmd_list_element
*c
)
5101 /* Make the real values match the user-changed values. */
5102 may_write_memory
= may_write_memory_1
;
5103 update_observer_mode ();
5108 initialize_targets (void)
5110 init_dummy_target ();
5111 push_target (&dummy_target
);
5113 add_info ("target", target_info
, targ_desc
);
5114 add_info ("files", target_info
, targ_desc
);
5116 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
5117 Set target debugging."), _("\
5118 Show target debugging."), _("\
5119 When non-zero, target debugging is enabled. Higher numbers are more\n\
5120 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
5124 &setdebuglist
, &showdebuglist
);
5126 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
5127 &trust_readonly
, _("\
5128 Set mode for reading from readonly sections."), _("\
5129 Show mode for reading from readonly sections."), _("\
5130 When this mode is on, memory reads from readonly sections (such as .text)\n\
5131 will be read from the object file instead of from the target. This will\n\
5132 result in significant performance improvement for remote targets."),
5134 show_trust_readonly
,
5135 &setlist
, &showlist
);
5137 add_com ("monitor", class_obscure
, do_monitor_command
,
5138 _("Send a command to the remote monitor (remote targets only)."));
5140 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5141 _("Print the name of each layer of the internal target stack."),
5142 &maintenanceprintlist
);
5144 add_setshow_boolean_cmd ("target-async", no_class
,
5145 &target_async_permitted_1
, _("\
5146 Set whether gdb controls the inferior in asynchronous mode."), _("\
5147 Show whether gdb controls the inferior in asynchronous mode."), _("\
5148 Tells gdb whether to control the inferior in asynchronous mode."),
5149 set_target_async_command
,
5150 show_target_async_command
,
5154 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5155 &may_write_registers_1
, _("\
5156 Set permission to write into registers."), _("\
5157 Show permission to write into registers."), _("\
5158 When this permission is on, GDB may write into the target's registers.\n\
5159 Otherwise, any sort of write attempt will result in an error."),
5160 set_target_permissions
, NULL
,
5161 &setlist
, &showlist
);
5163 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5164 &may_write_memory_1
, _("\
5165 Set permission to write into target memory."), _("\
5166 Show permission to write into target memory."), _("\
5167 When this permission is on, GDB may write into the target's memory.\n\
5168 Otherwise, any sort of write attempt will result in an error."),
5169 set_write_memory_permission
, NULL
,
5170 &setlist
, &showlist
);
5172 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5173 &may_insert_breakpoints_1
, _("\
5174 Set permission to insert breakpoints in the target."), _("\
5175 Show permission to insert breakpoints in the target."), _("\
5176 When this permission is on, GDB may insert breakpoints in the program.\n\
5177 Otherwise, any sort of insertion attempt will result in an error."),
5178 set_target_permissions
, NULL
,
5179 &setlist
, &showlist
);
5181 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5182 &may_insert_tracepoints_1
, _("\
5183 Set permission to insert tracepoints in the target."), _("\
5184 Show permission to insert tracepoints in the target."), _("\
5185 When this permission is on, GDB may insert tracepoints in the program.\n\
5186 Otherwise, any sort of insertion attempt will result in an error."),
5187 set_target_permissions
, NULL
,
5188 &setlist
, &showlist
);
5190 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5191 &may_insert_fast_tracepoints_1
, _("\
5192 Set permission to insert fast tracepoints in the target."), _("\
5193 Show permission to insert fast tracepoints in the target."), _("\
5194 When this permission is on, GDB may insert fast tracepoints.\n\
5195 Otherwise, any sort of insertion attempt will result in an error."),
5196 set_target_permissions
, NULL
,
5197 &setlist
, &showlist
);
5199 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5201 Set permission to interrupt or signal the target."), _("\
5202 Show permission to interrupt or signal the target."), _("\
5203 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5204 Otherwise, any attempt to interrupt or stop will be ignored."),
5205 set_target_permissions
, NULL
,
5206 &setlist
, &showlist
);