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 INHERIT (to_insert_fork_catchpoint
, t
);
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_insert_fork_catchpoint
,
738 (int (*) (struct target_ops
*, int))
740 de_fault (to_remove_fork_catchpoint
,
741 (int (*) (struct target_ops
*, int))
743 de_fault (to_insert_vfork_catchpoint
,
744 (int (*) (struct target_ops
*, int))
746 de_fault (to_remove_vfork_catchpoint
,
747 (int (*) (struct target_ops
*, int))
749 de_fault (to_insert_exec_catchpoint
,
750 (int (*) (struct target_ops
*, int))
752 de_fault (to_remove_exec_catchpoint
,
753 (int (*) (struct target_ops
*, int))
755 de_fault (to_set_syscall_catchpoint
,
756 (int (*) (struct target_ops
*, int, int, int, int, int *))
758 de_fault (to_has_exited
,
759 (int (*) (struct target_ops
*, int, int, int *))
761 de_fault (to_can_run
,
762 (int (*) (struct target_ops
*))
764 de_fault (to_extra_thread_info
,
765 (char *(*) (struct target_ops
*, struct thread_info
*))
767 de_fault (to_thread_name
,
768 (char *(*) (struct target_ops
*, struct thread_info
*))
771 (void (*) (struct target_ops
*, ptid_t
))
773 de_fault (to_pid_to_exec_file
,
774 (char *(*) (struct target_ops
*, int))
776 de_fault (to_thread_architecture
,
777 default_thread_architecture
);
778 current_target
.to_read_description
= NULL
;
779 de_fault (to_get_ada_task_ptid
,
780 (ptid_t (*) (struct target_ops
*, long, long))
781 default_get_ada_task_ptid
);
782 de_fault (to_supports_multi_process
,
783 (int (*) (struct target_ops
*))
785 de_fault (to_supports_enable_disable_tracepoint
,
786 (int (*) (struct target_ops
*))
788 de_fault (to_supports_string_tracing
,
789 (int (*) (struct target_ops
*))
791 de_fault (to_trace_init
,
792 (void (*) (struct target_ops
*))
794 de_fault (to_download_tracepoint
,
795 (void (*) (struct target_ops
*, struct bp_location
*))
797 de_fault (to_can_download_tracepoint
,
798 (int (*) (struct target_ops
*))
800 de_fault (to_download_trace_state_variable
,
801 (void (*) (struct target_ops
*, struct trace_state_variable
*))
803 de_fault (to_enable_tracepoint
,
804 (void (*) (struct target_ops
*, struct bp_location
*))
806 de_fault (to_disable_tracepoint
,
807 (void (*) (struct target_ops
*, struct bp_location
*))
809 de_fault (to_trace_set_readonly_regions
,
810 (void (*) (struct target_ops
*))
812 de_fault (to_trace_start
,
813 (void (*) (struct target_ops
*))
815 de_fault (to_get_trace_status
,
816 (int (*) (struct target_ops
*, struct trace_status
*))
818 de_fault (to_get_tracepoint_status
,
819 (void (*) (struct target_ops
*, struct breakpoint
*,
820 struct uploaded_tp
*))
822 de_fault (to_trace_stop
,
823 (void (*) (struct target_ops
*))
825 de_fault (to_trace_find
,
826 (int (*) (struct target_ops
*,
827 enum trace_find_type
, int, CORE_ADDR
, CORE_ADDR
, int *))
829 de_fault (to_get_trace_state_variable_value
,
830 (int (*) (struct target_ops
*, int, LONGEST
*))
832 de_fault (to_save_trace_data
,
833 (int (*) (struct target_ops
*, const char *))
835 de_fault (to_upload_tracepoints
,
836 (int (*) (struct target_ops
*, struct uploaded_tp
**))
838 de_fault (to_upload_trace_state_variables
,
839 (int (*) (struct target_ops
*, struct uploaded_tsv
**))
841 de_fault (to_get_raw_trace_data
,
842 (LONGEST (*) (struct target_ops
*, gdb_byte
*, ULONGEST
, LONGEST
))
844 de_fault (to_get_min_fast_tracepoint_insn_len
,
845 (int (*) (struct target_ops
*))
847 de_fault (to_set_disconnected_tracing
,
848 (void (*) (struct target_ops
*, int))
850 de_fault (to_set_circular_trace_buffer
,
851 (void (*) (struct target_ops
*, int))
853 de_fault (to_set_trace_buffer_size
,
854 (void (*) (struct target_ops
*, LONGEST
))
856 de_fault (to_set_trace_notes
,
857 (int (*) (struct target_ops
*,
858 const char *, const char *, const char *))
860 de_fault (to_get_tib_address
,
861 (int (*) (struct target_ops
*, ptid_t
, CORE_ADDR
*))
863 de_fault (to_set_permissions
,
864 (void (*) (struct target_ops
*))
866 de_fault (to_static_tracepoint_marker_at
,
867 (int (*) (struct target_ops
*,
868 CORE_ADDR
, struct static_tracepoint_marker
*))
870 de_fault (to_static_tracepoint_markers_by_strid
,
871 (VEC(static_tracepoint_marker_p
) * (*) (struct target_ops
*,
874 de_fault (to_traceframe_info
,
875 (struct traceframe_info
* (*) (struct target_ops
*))
877 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
878 (int (*) (struct target_ops
*))
880 de_fault (to_can_run_breakpoint_commands
,
881 (int (*) (struct target_ops
*))
883 de_fault (to_use_agent
,
884 (int (*) (struct target_ops
*, int))
886 de_fault (to_can_use_agent
,
887 (int (*) (struct target_ops
*))
889 de_fault (to_augmented_libraries_svr4_read
,
890 (int (*) (struct target_ops
*))
892 de_fault (to_execution_direction
, default_execution_direction
);
896 /* Finally, position the target-stack beneath the squashed
897 "current_target". That way code looking for a non-inherited
898 target method can quickly and simply find it. */
899 current_target
.beneath
= target_stack
;
902 setup_target_debug ();
905 /* Push a new target type into the stack of the existing target accessors,
906 possibly superseding some of the existing accessors.
908 Rather than allow an empty stack, we always have the dummy target at
909 the bottom stratum, so we can call the function vectors without
913 push_target (struct target_ops
*t
)
915 struct target_ops
**cur
;
917 /* Check magic number. If wrong, it probably means someone changed
918 the struct definition, but not all the places that initialize one. */
919 if (t
->to_magic
!= OPS_MAGIC
)
921 fprintf_unfiltered (gdb_stderr
,
922 "Magic number of %s target struct wrong\n",
924 internal_error (__FILE__
, __LINE__
,
925 _("failed internal consistency check"));
928 /* Find the proper stratum to install this target in. */
929 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
931 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
935 /* If there's already targets at this stratum, remove them. */
936 /* FIXME: cagney/2003-10-15: I think this should be popping all
937 targets to CUR, and not just those at this stratum level. */
938 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
940 /* There's already something at this stratum level. Close it,
941 and un-hook it from the stack. */
942 struct target_ops
*tmp
= (*cur
);
944 (*cur
) = (*cur
)->beneath
;
949 /* We have removed all targets in our stratum, now add the new one. */
953 update_current_target ();
956 /* Remove a target_ops vector from the stack, wherever it may be.
957 Return how many times it was removed (0 or 1). */
960 unpush_target (struct target_ops
*t
)
962 struct target_ops
**cur
;
963 struct target_ops
*tmp
;
965 if (t
->to_stratum
== dummy_stratum
)
966 internal_error (__FILE__
, __LINE__
,
967 _("Attempt to unpush the dummy target"));
969 /* Look for the specified target. Note that we assume that a target
970 can only occur once in the target stack. */
972 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
978 /* If we don't find target_ops, quit. Only open targets should be
983 /* Unchain the target. */
985 (*cur
) = (*cur
)->beneath
;
988 update_current_target ();
990 /* Finally close the target. Note we do this after unchaining, so
991 any target method calls from within the target_close
992 implementation don't end up in T anymore. */
999 pop_all_targets_above (enum strata above_stratum
)
1001 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
1003 if (!unpush_target (target_stack
))
1005 fprintf_unfiltered (gdb_stderr
,
1006 "pop_all_targets couldn't find target %s\n",
1007 target_stack
->to_shortname
);
1008 internal_error (__FILE__
, __LINE__
,
1009 _("failed internal consistency check"));
1016 pop_all_targets (void)
1018 pop_all_targets_above (dummy_stratum
);
1021 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
1024 target_is_pushed (struct target_ops
*t
)
1026 struct target_ops
**cur
;
1028 /* Check magic number. If wrong, it probably means someone changed
1029 the struct definition, but not all the places that initialize one. */
1030 if (t
->to_magic
!= OPS_MAGIC
)
1032 fprintf_unfiltered (gdb_stderr
,
1033 "Magic number of %s target struct wrong\n",
1035 internal_error (__FILE__
, __LINE__
,
1036 _("failed internal consistency check"));
1039 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1046 /* Using the objfile specified in OBJFILE, find the address for the
1047 current thread's thread-local storage with offset OFFSET. */
1049 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1051 volatile CORE_ADDR addr
= 0;
1052 struct target_ops
*target
;
1054 for (target
= current_target
.beneath
;
1056 target
= target
->beneath
)
1058 if (target
->to_get_thread_local_address
!= NULL
)
1063 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
1065 ptid_t ptid
= inferior_ptid
;
1066 volatile struct gdb_exception ex
;
1068 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1072 /* Fetch the load module address for this objfile. */
1073 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1075 /* If it's 0, throw the appropriate exception. */
1077 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1078 _("TLS load module not found"));
1080 addr
= target
->to_get_thread_local_address (target
, ptid
,
1083 /* If an error occurred, print TLS related messages here. Otherwise,
1084 throw the error to some higher catcher. */
1087 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1091 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1092 error (_("Cannot find thread-local variables "
1093 "in this thread library."));
1095 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1096 if (objfile_is_library
)
1097 error (_("Cannot find shared library `%s' in dynamic"
1098 " linker's load module list"), objfile_name (objfile
));
1100 error (_("Cannot find executable file `%s' in dynamic"
1101 " linker's load module list"), objfile_name (objfile
));
1103 case TLS_NOT_ALLOCATED_YET_ERROR
:
1104 if (objfile_is_library
)
1105 error (_("The inferior has not yet allocated storage for"
1106 " thread-local variables in\n"
1107 "the shared library `%s'\n"
1109 objfile_name (objfile
), target_pid_to_str (ptid
));
1111 error (_("The inferior has not yet allocated storage for"
1112 " thread-local variables in\n"
1113 "the executable `%s'\n"
1115 objfile_name (objfile
), target_pid_to_str (ptid
));
1117 case TLS_GENERIC_ERROR
:
1118 if (objfile_is_library
)
1119 error (_("Cannot find thread-local storage for %s, "
1120 "shared library %s:\n%s"),
1121 target_pid_to_str (ptid
),
1122 objfile_name (objfile
), ex
.message
);
1124 error (_("Cannot find thread-local storage for %s, "
1125 "executable file %s:\n%s"),
1126 target_pid_to_str (ptid
),
1127 objfile_name (objfile
), ex
.message
);
1130 throw_exception (ex
);
1135 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1136 TLS is an ABI-specific thing. But we don't do that yet. */
1138 error (_("Cannot find thread-local variables on this target"));
1144 target_xfer_status_to_string (enum target_xfer_status err
)
1146 #define CASE(X) case X: return #X
1149 CASE(TARGET_XFER_E_IO
);
1150 CASE(TARGET_XFER_E_UNAVAILABLE
);
1159 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1161 /* target_read_string -- read a null terminated string, up to LEN bytes,
1162 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1163 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1164 is responsible for freeing it. Return the number of bytes successfully
1168 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1170 int tlen
, offset
, i
;
1174 int buffer_allocated
;
1176 unsigned int nbytes_read
= 0;
1178 gdb_assert (string
);
1180 /* Small for testing. */
1181 buffer_allocated
= 4;
1182 buffer
= xmalloc (buffer_allocated
);
1187 tlen
= MIN (len
, 4 - (memaddr
& 3));
1188 offset
= memaddr
& 3;
1190 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1193 /* The transfer request might have crossed the boundary to an
1194 unallocated region of memory. Retry the transfer, requesting
1198 errcode
= target_read_memory (memaddr
, buf
, 1);
1203 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1207 bytes
= bufptr
- buffer
;
1208 buffer_allocated
*= 2;
1209 buffer
= xrealloc (buffer
, buffer_allocated
);
1210 bufptr
= buffer
+ bytes
;
1213 for (i
= 0; i
< tlen
; i
++)
1215 *bufptr
++ = buf
[i
+ offset
];
1216 if (buf
[i
+ offset
] == '\000')
1218 nbytes_read
+= i
+ 1;
1225 nbytes_read
+= tlen
;
1234 struct target_section_table
*
1235 target_get_section_table (struct target_ops
*target
)
1237 struct target_ops
*t
;
1240 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1242 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1243 if (t
->to_get_section_table
!= NULL
)
1244 return (*t
->to_get_section_table
) (t
);
1249 /* Find a section containing ADDR. */
1251 struct target_section
*
1252 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1254 struct target_section_table
*table
= target_get_section_table (target
);
1255 struct target_section
*secp
;
1260 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1262 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1268 /* Read memory from the live target, even if currently inspecting a
1269 traceframe. The return is the same as that of target_read. */
1271 static enum target_xfer_status
1272 target_read_live_memory (enum target_object object
,
1273 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1274 ULONGEST
*xfered_len
)
1276 enum target_xfer_status ret
;
1277 struct cleanup
*cleanup
;
1279 /* Switch momentarily out of tfind mode so to access live memory.
1280 Note that this must not clear global state, such as the frame
1281 cache, which must still remain valid for the previous traceframe.
1282 We may be _building_ the frame cache at this point. */
1283 cleanup
= make_cleanup_restore_traceframe_number ();
1284 set_traceframe_number (-1);
1286 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1287 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1289 do_cleanups (cleanup
);
1293 /* Using the set of read-only target sections of OPS, read live
1294 read-only memory. Note that the actual reads start from the
1295 top-most target again.
1297 For interface/parameters/return description see target.h,
1300 static enum target_xfer_status
1301 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1302 enum target_object object
,
1303 gdb_byte
*readbuf
, ULONGEST memaddr
,
1304 ULONGEST len
, ULONGEST
*xfered_len
)
1306 struct target_section
*secp
;
1307 struct target_section_table
*table
;
1309 secp
= target_section_by_addr (ops
, memaddr
);
1311 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1312 secp
->the_bfd_section
)
1315 struct target_section
*p
;
1316 ULONGEST memend
= memaddr
+ len
;
1318 table
= target_get_section_table (ops
);
1320 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1322 if (memaddr
>= p
->addr
)
1324 if (memend
<= p
->endaddr
)
1326 /* Entire transfer is within this section. */
1327 return target_read_live_memory (object
, memaddr
,
1328 readbuf
, len
, xfered_len
);
1330 else if (memaddr
>= p
->endaddr
)
1332 /* This section ends before the transfer starts. */
1337 /* This section overlaps the transfer. Just do half. */
1338 len
= p
->endaddr
- memaddr
;
1339 return target_read_live_memory (object
, memaddr
,
1340 readbuf
, len
, xfered_len
);
1346 return TARGET_XFER_EOF
;
1349 /* Read memory from more than one valid target. A core file, for
1350 instance, could have some of memory but delegate other bits to
1351 the target below it. So, we must manually try all targets. */
1353 static enum target_xfer_status
1354 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1355 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1356 ULONGEST
*xfered_len
)
1358 enum target_xfer_status res
;
1362 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1363 readbuf
, writebuf
, memaddr
, len
,
1365 if (res
== TARGET_XFER_OK
)
1368 /* Stop if the target reports that the memory is not available. */
1369 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1372 /* We want to continue past core files to executables, but not
1373 past a running target's memory. */
1374 if (ops
->to_has_all_memory (ops
))
1379 while (ops
!= NULL
);
1384 /* Perform a partial memory transfer.
1385 For docs see target.h, to_xfer_partial. */
1387 static enum target_xfer_status
1388 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1389 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1390 ULONGEST len
, ULONGEST
*xfered_len
)
1392 enum target_xfer_status res
;
1394 struct mem_region
*region
;
1395 struct inferior
*inf
;
1397 /* For accesses to unmapped overlay sections, read directly from
1398 files. Must do this first, as MEMADDR may need adjustment. */
1399 if (readbuf
!= NULL
&& overlay_debugging
)
1401 struct obj_section
*section
= find_pc_overlay (memaddr
);
1403 if (pc_in_unmapped_range (memaddr
, section
))
1405 struct target_section_table
*table
1406 = target_get_section_table (ops
);
1407 const char *section_name
= section
->the_bfd_section
->name
;
1409 memaddr
= overlay_mapped_address (memaddr
, section
);
1410 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1411 memaddr
, len
, xfered_len
,
1413 table
->sections_end
,
1418 /* Try the executable files, if "trust-readonly-sections" is set. */
1419 if (readbuf
!= NULL
&& trust_readonly
)
1421 struct target_section
*secp
;
1422 struct target_section_table
*table
;
1424 secp
= target_section_by_addr (ops
, memaddr
);
1426 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1427 secp
->the_bfd_section
)
1430 table
= target_get_section_table (ops
);
1431 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1432 memaddr
, len
, xfered_len
,
1434 table
->sections_end
,
1439 /* If reading unavailable memory in the context of traceframes, and
1440 this address falls within a read-only section, fallback to
1441 reading from live memory. */
1442 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1444 VEC(mem_range_s
) *available
;
1446 /* If we fail to get the set of available memory, then the
1447 target does not support querying traceframe info, and so we
1448 attempt reading from the traceframe anyway (assuming the
1449 target implements the old QTro packet then). */
1450 if (traceframe_available_memory (&available
, memaddr
, len
))
1452 struct cleanup
*old_chain
;
1454 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1456 if (VEC_empty (mem_range_s
, available
)
1457 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1459 /* Don't read into the traceframe's available
1461 if (!VEC_empty (mem_range_s
, available
))
1463 LONGEST oldlen
= len
;
1465 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1466 gdb_assert (len
<= oldlen
);
1469 do_cleanups (old_chain
);
1471 /* This goes through the topmost target again. */
1472 res
= memory_xfer_live_readonly_partial (ops
, object
,
1475 if (res
== TARGET_XFER_OK
)
1476 return TARGET_XFER_OK
;
1479 /* No use trying further, we know some memory starting
1480 at MEMADDR isn't available. */
1482 return TARGET_XFER_E_UNAVAILABLE
;
1486 /* Don't try to read more than how much is available, in
1487 case the target implements the deprecated QTro packet to
1488 cater for older GDBs (the target's knowledge of read-only
1489 sections may be outdated by now). */
1490 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1492 do_cleanups (old_chain
);
1496 /* Try GDB's internal data cache. */
1497 region
= lookup_mem_region (memaddr
);
1498 /* region->hi == 0 means there's no upper bound. */
1499 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1502 reg_len
= region
->hi
- memaddr
;
1504 switch (region
->attrib
.mode
)
1507 if (writebuf
!= NULL
)
1508 return TARGET_XFER_E_IO
;
1512 if (readbuf
!= NULL
)
1513 return TARGET_XFER_E_IO
;
1517 /* We only support writing to flash during "load" for now. */
1518 if (writebuf
!= NULL
)
1519 error (_("Writing to flash memory forbidden in this context"));
1523 return TARGET_XFER_E_IO
;
1526 if (!ptid_equal (inferior_ptid
, null_ptid
))
1527 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1532 /* The dcache reads whole cache lines; that doesn't play well
1533 with reading from a trace buffer, because reading outside of
1534 the collected memory range fails. */
1535 && get_traceframe_number () == -1
1536 && (region
->attrib
.cache
1537 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1538 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1540 DCACHE
*dcache
= target_dcache_get_or_init ();
1543 if (readbuf
!= NULL
)
1544 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1546 /* FIXME drow/2006-08-09: If we're going to preserve const
1547 correctness dcache_xfer_memory should take readbuf and
1549 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1552 return TARGET_XFER_E_IO
;
1555 *xfered_len
= (ULONGEST
) l
;
1556 return TARGET_XFER_OK
;
1560 /* If none of those methods found the memory we wanted, fall back
1561 to a target partial transfer. Normally a single call to
1562 to_xfer_partial is enough; if it doesn't recognize an object
1563 it will call the to_xfer_partial of the next target down.
1564 But for memory this won't do. Memory is the only target
1565 object which can be read from more than one valid target.
1566 A core file, for instance, could have some of memory but
1567 delegate other bits to the target below it. So, we must
1568 manually try all targets. */
1570 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1573 /* Make sure the cache gets updated no matter what - if we are writing
1574 to the stack. Even if this write is not tagged as such, we still need
1575 to update the cache. */
1577 if (res
== TARGET_XFER_OK
1580 && target_dcache_init_p ()
1581 && !region
->attrib
.cache
1582 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1583 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1585 DCACHE
*dcache
= target_dcache_get ();
1587 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1590 /* If we still haven't got anything, return the last error. We
1595 /* Perform a partial memory transfer. For docs see target.h,
1598 static enum target_xfer_status
1599 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1600 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1601 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1603 enum target_xfer_status res
;
1605 /* Zero length requests are ok and require no work. */
1607 return TARGET_XFER_EOF
;
1609 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1610 breakpoint insns, thus hiding out from higher layers whether
1611 there are software breakpoints inserted in the code stream. */
1612 if (readbuf
!= NULL
)
1614 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1617 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1618 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1623 struct cleanup
*old_chain
;
1625 /* A large write request is likely to be partially satisfied
1626 by memory_xfer_partial_1. We will continually malloc
1627 and free a copy of the entire write request for breakpoint
1628 shadow handling even though we only end up writing a small
1629 subset of it. Cap writes to 4KB to mitigate this. */
1630 len
= min (4096, len
);
1632 buf
= xmalloc (len
);
1633 old_chain
= make_cleanup (xfree
, buf
);
1634 memcpy (buf
, writebuf
, len
);
1636 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1637 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1640 do_cleanups (old_chain
);
1647 restore_show_memory_breakpoints (void *arg
)
1649 show_memory_breakpoints
= (uintptr_t) arg
;
1653 make_show_memory_breakpoints_cleanup (int show
)
1655 int current
= show_memory_breakpoints
;
1657 show_memory_breakpoints
= show
;
1658 return make_cleanup (restore_show_memory_breakpoints
,
1659 (void *) (uintptr_t) current
);
1662 /* For docs see target.h, to_xfer_partial. */
1664 enum target_xfer_status
1665 target_xfer_partial (struct target_ops
*ops
,
1666 enum target_object object
, const char *annex
,
1667 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1668 ULONGEST offset
, ULONGEST len
,
1669 ULONGEST
*xfered_len
)
1671 enum target_xfer_status retval
;
1673 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1675 /* Transfer is done when LEN is zero. */
1677 return TARGET_XFER_EOF
;
1679 if (writebuf
&& !may_write_memory
)
1680 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1681 core_addr_to_string_nz (offset
), plongest (len
));
1685 /* If this is a memory transfer, let the memory-specific code
1686 have a look at it instead. Memory transfers are more
1688 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1689 || object
== TARGET_OBJECT_CODE_MEMORY
)
1690 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1691 writebuf
, offset
, len
, xfered_len
);
1692 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1694 /* Request the normal memory object from other layers. */
1695 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1699 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1700 writebuf
, offset
, len
, xfered_len
);
1704 const unsigned char *myaddr
= NULL
;
1706 fprintf_unfiltered (gdb_stdlog
,
1707 "%s:target_xfer_partial "
1708 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1711 (annex
? annex
: "(null)"),
1712 host_address_to_string (readbuf
),
1713 host_address_to_string (writebuf
),
1714 core_addr_to_string_nz (offset
),
1715 pulongest (len
), retval
,
1716 pulongest (*xfered_len
));
1722 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1726 fputs_unfiltered (", bytes =", gdb_stdlog
);
1727 for (i
= 0; i
< *xfered_len
; i
++)
1729 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1731 if (targetdebug
< 2 && i
> 0)
1733 fprintf_unfiltered (gdb_stdlog
, " ...");
1736 fprintf_unfiltered (gdb_stdlog
, "\n");
1739 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1743 fputc_unfiltered ('\n', gdb_stdlog
);
1746 /* Check implementations of to_xfer_partial update *XFERED_LEN
1747 properly. Do assertion after printing debug messages, so that we
1748 can find more clues on assertion failure from debugging messages. */
1749 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1750 gdb_assert (*xfered_len
> 0);
1755 /* Read LEN bytes of target memory at address MEMADDR, placing the
1756 results in GDB's memory at MYADDR. Returns either 0 for success or
1757 TARGET_XFER_E_IO if any error occurs.
1759 If an error occurs, no guarantee is made about the contents of the data at
1760 MYADDR. In particular, the caller should not depend upon partial reads
1761 filling the buffer with good data. There is no way for the caller to know
1762 how much good data might have been transfered anyway. Callers that can
1763 deal with partial reads should call target_read (which will retry until
1764 it makes no progress, and then return how much was transferred). */
1767 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1769 /* Dispatch to the topmost target, not the flattened current_target.
1770 Memory accesses check target->to_has_(all_)memory, and the
1771 flattened target doesn't inherit those. */
1772 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1773 myaddr
, memaddr
, len
) == len
)
1776 return TARGET_XFER_E_IO
;
1779 /* Like target_read_memory, but specify explicitly that this is a read
1780 from the target's raw memory. That is, this read bypasses the
1781 dcache, breakpoint shadowing, etc. */
1784 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1786 /* See comment in target_read_memory about why the request starts at
1787 current_target.beneath. */
1788 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1789 myaddr
, memaddr
, len
) == len
)
1792 return TARGET_XFER_E_IO
;
1795 /* Like target_read_memory, but specify explicitly that this is a read from
1796 the target's stack. This may trigger different cache behavior. */
1799 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1801 /* See comment in target_read_memory about why the request starts at
1802 current_target.beneath. */
1803 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1804 myaddr
, memaddr
, len
) == len
)
1807 return TARGET_XFER_E_IO
;
1810 /* Like target_read_memory, but specify explicitly that this is a read from
1811 the target's code. This may trigger different cache behavior. */
1814 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1816 /* See comment in target_read_memory about why the request starts at
1817 current_target.beneath. */
1818 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1819 myaddr
, memaddr
, len
) == len
)
1822 return TARGET_XFER_E_IO
;
1825 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1826 Returns either 0 for success or TARGET_XFER_E_IO if any
1827 error occurs. If an error occurs, no guarantee is made about how
1828 much data got written. Callers that can deal with partial writes
1829 should call target_write. */
1832 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1834 /* See comment in target_read_memory about why the request starts at
1835 current_target.beneath. */
1836 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1837 myaddr
, memaddr
, len
) == len
)
1840 return TARGET_XFER_E_IO
;
1843 /* Write LEN bytes from MYADDR to target raw memory at address
1844 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1845 if any error occurs. If an error occurs, no guarantee is made
1846 about how much data got written. Callers that can deal with
1847 partial writes should call target_write. */
1850 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1852 /* See comment in target_read_memory about why the request starts at
1853 current_target.beneath. */
1854 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1855 myaddr
, memaddr
, len
) == len
)
1858 return TARGET_XFER_E_IO
;
1861 /* Fetch the target's memory map. */
1864 target_memory_map (void)
1866 VEC(mem_region_s
) *result
;
1867 struct mem_region
*last_one
, *this_one
;
1869 struct target_ops
*t
;
1872 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1874 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1875 if (t
->to_memory_map
!= NULL
)
1881 result
= t
->to_memory_map (t
);
1885 qsort (VEC_address (mem_region_s
, result
),
1886 VEC_length (mem_region_s
, result
),
1887 sizeof (struct mem_region
), mem_region_cmp
);
1889 /* Check that regions do not overlap. Simultaneously assign
1890 a numbering for the "mem" commands to use to refer to
1893 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1895 this_one
->number
= ix
;
1897 if (last_one
&& last_one
->hi
> this_one
->lo
)
1899 warning (_("Overlapping regions in memory map: ignoring"));
1900 VEC_free (mem_region_s
, result
);
1903 last_one
= this_one
;
1910 target_flash_erase (ULONGEST address
, LONGEST length
)
1912 struct target_ops
*t
;
1914 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1915 if (t
->to_flash_erase
!= NULL
)
1918 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1919 hex_string (address
), phex (length
, 0));
1920 t
->to_flash_erase (t
, address
, length
);
1928 target_flash_done (void)
1930 struct target_ops
*t
;
1932 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1933 if (t
->to_flash_done
!= NULL
)
1936 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1937 t
->to_flash_done (t
);
1945 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1946 struct cmd_list_element
*c
, const char *value
)
1948 fprintf_filtered (file
,
1949 _("Mode for reading from readonly sections is %s.\n"),
1953 /* More generic transfers. */
1955 static enum target_xfer_status
1956 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1957 const char *annex
, gdb_byte
*readbuf
,
1958 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1959 ULONGEST
*xfered_len
)
1961 if (object
== TARGET_OBJECT_MEMORY
1962 && ops
->deprecated_xfer_memory
!= NULL
)
1963 /* If available, fall back to the target's
1964 "deprecated_xfer_memory" method. */
1969 if (writebuf
!= NULL
)
1971 void *buffer
= xmalloc (len
);
1972 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1974 memcpy (buffer
, writebuf
, len
);
1975 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1976 1/*write*/, NULL
, ops
);
1977 do_cleanups (cleanup
);
1979 if (readbuf
!= NULL
)
1980 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1981 0/*read*/, NULL
, ops
);
1984 *xfered_len
= (ULONGEST
) xfered
;
1985 return TARGET_XFER_E_IO
;
1987 else if (xfered
== 0 && errno
== 0)
1988 /* "deprecated_xfer_memory" uses 0, cross checked against
1989 ERRNO as one indication of an error. */
1990 return TARGET_XFER_EOF
;
1992 return TARGET_XFER_E_IO
;
1996 gdb_assert (ops
->beneath
!= NULL
);
1997 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1998 readbuf
, writebuf
, offset
, len
,
2003 /* Target vector read/write partial wrapper functions. */
2005 static enum target_xfer_status
2006 target_read_partial (struct target_ops
*ops
,
2007 enum target_object object
,
2008 const char *annex
, gdb_byte
*buf
,
2009 ULONGEST offset
, ULONGEST len
,
2010 ULONGEST
*xfered_len
)
2012 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
2016 static enum target_xfer_status
2017 target_write_partial (struct target_ops
*ops
,
2018 enum target_object object
,
2019 const char *annex
, const gdb_byte
*buf
,
2020 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
2022 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
2026 /* Wrappers to perform the full transfer. */
2028 /* For docs on target_read see target.h. */
2031 target_read (struct target_ops
*ops
,
2032 enum target_object object
,
2033 const char *annex
, gdb_byte
*buf
,
2034 ULONGEST offset
, LONGEST len
)
2038 while (xfered
< len
)
2040 ULONGEST xfered_len
;
2041 enum target_xfer_status status
;
2043 status
= target_read_partial (ops
, object
, annex
,
2044 (gdb_byte
*) buf
+ xfered
,
2045 offset
+ xfered
, len
- xfered
,
2048 /* Call an observer, notifying them of the xfer progress? */
2049 if (status
== TARGET_XFER_EOF
)
2051 else if (status
== TARGET_XFER_OK
)
2053 xfered
+= xfered_len
;
2063 /* Assuming that the entire [begin, end) range of memory cannot be
2064 read, try to read whatever subrange is possible to read.
2066 The function returns, in RESULT, either zero or one memory block.
2067 If there's a readable subrange at the beginning, it is completely
2068 read and returned. Any further readable subrange will not be read.
2069 Otherwise, if there's a readable subrange at the end, it will be
2070 completely read and returned. Any readable subranges before it
2071 (obviously, not starting at the beginning), will be ignored. In
2072 other cases -- either no readable subrange, or readable subrange(s)
2073 that is neither at the beginning, or end, nothing is returned.
2075 The purpose of this function is to handle a read across a boundary
2076 of accessible memory in a case when memory map is not available.
2077 The above restrictions are fine for this case, but will give
2078 incorrect results if the memory is 'patchy'. However, supporting
2079 'patchy' memory would require trying to read every single byte,
2080 and it seems unacceptable solution. Explicit memory map is
2081 recommended for this case -- and target_read_memory_robust will
2082 take care of reading multiple ranges then. */
2085 read_whatever_is_readable (struct target_ops
*ops
,
2086 ULONGEST begin
, ULONGEST end
,
2087 VEC(memory_read_result_s
) **result
)
2089 gdb_byte
*buf
= xmalloc (end
- begin
);
2090 ULONGEST current_begin
= begin
;
2091 ULONGEST current_end
= end
;
2093 memory_read_result_s r
;
2094 ULONGEST xfered_len
;
2096 /* If we previously failed to read 1 byte, nothing can be done here. */
2097 if (end
- begin
<= 1)
2103 /* Check that either first or the last byte is readable, and give up
2104 if not. This heuristic is meant to permit reading accessible memory
2105 at the boundary of accessible region. */
2106 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2107 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
2112 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2113 buf
+ (end
-begin
) - 1, end
- 1, 1,
2114 &xfered_len
) == TARGET_XFER_OK
)
2125 /* Loop invariant is that the [current_begin, current_end) was previously
2126 found to be not readable as a whole.
2128 Note loop condition -- if the range has 1 byte, we can't divide the range
2129 so there's no point trying further. */
2130 while (current_end
- current_begin
> 1)
2132 ULONGEST first_half_begin
, first_half_end
;
2133 ULONGEST second_half_begin
, second_half_end
;
2135 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2139 first_half_begin
= current_begin
;
2140 first_half_end
= middle
;
2141 second_half_begin
= middle
;
2142 second_half_end
= current_end
;
2146 first_half_begin
= middle
;
2147 first_half_end
= current_end
;
2148 second_half_begin
= current_begin
;
2149 second_half_end
= middle
;
2152 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2153 buf
+ (first_half_begin
- begin
),
2155 first_half_end
- first_half_begin
);
2157 if (xfer
== first_half_end
- first_half_begin
)
2159 /* This half reads up fine. So, the error must be in the
2161 current_begin
= second_half_begin
;
2162 current_end
= second_half_end
;
2166 /* This half is not readable. Because we've tried one byte, we
2167 know some part of this half if actually redable. Go to the next
2168 iteration to divide again and try to read.
2170 We don't handle the other half, because this function only tries
2171 to read a single readable subrange. */
2172 current_begin
= first_half_begin
;
2173 current_end
= first_half_end
;
2179 /* The [begin, current_begin) range has been read. */
2181 r
.end
= current_begin
;
2186 /* The [current_end, end) range has been read. */
2187 LONGEST rlen
= end
- current_end
;
2189 r
.data
= xmalloc (rlen
);
2190 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2191 r
.begin
= current_end
;
2195 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2199 free_memory_read_result_vector (void *x
)
2201 VEC(memory_read_result_s
) *v
= x
;
2202 memory_read_result_s
*current
;
2205 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2207 xfree (current
->data
);
2209 VEC_free (memory_read_result_s
, v
);
2212 VEC(memory_read_result_s
) *
2213 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2215 VEC(memory_read_result_s
) *result
= 0;
2218 while (xfered
< len
)
2220 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2223 /* If there is no explicit region, a fake one should be created. */
2224 gdb_assert (region
);
2226 if (region
->hi
== 0)
2227 rlen
= len
- xfered
;
2229 rlen
= region
->hi
- offset
;
2231 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2233 /* Cannot read this region. Note that we can end up here only
2234 if the region is explicitly marked inaccessible, or
2235 'inaccessible-by-default' is in effect. */
2240 LONGEST to_read
= min (len
- xfered
, rlen
);
2241 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2243 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2244 (gdb_byte
*) buffer
,
2245 offset
+ xfered
, to_read
);
2246 /* Call an observer, notifying them of the xfer progress? */
2249 /* Got an error reading full chunk. See if maybe we can read
2252 read_whatever_is_readable (ops
, offset
+ xfered
,
2253 offset
+ xfered
+ to_read
, &result
);
2258 struct memory_read_result r
;
2260 r
.begin
= offset
+ xfered
;
2261 r
.end
= r
.begin
+ xfer
;
2262 VEC_safe_push (memory_read_result_s
, result
, &r
);
2272 /* An alternative to target_write with progress callbacks. */
2275 target_write_with_progress (struct target_ops
*ops
,
2276 enum target_object object
,
2277 const char *annex
, const gdb_byte
*buf
,
2278 ULONGEST offset
, LONGEST len
,
2279 void (*progress
) (ULONGEST
, void *), void *baton
)
2283 /* Give the progress callback a chance to set up. */
2285 (*progress
) (0, baton
);
2287 while (xfered
< len
)
2289 ULONGEST xfered_len
;
2290 enum target_xfer_status status
;
2292 status
= target_write_partial (ops
, object
, annex
,
2293 (gdb_byte
*) buf
+ xfered
,
2294 offset
+ xfered
, len
- xfered
,
2297 if (status
== TARGET_XFER_EOF
)
2299 if (TARGET_XFER_STATUS_ERROR_P (status
))
2302 gdb_assert (status
== TARGET_XFER_OK
);
2304 (*progress
) (xfered_len
, baton
);
2306 xfered
+= xfered_len
;
2312 /* For docs on target_write see target.h. */
2315 target_write (struct target_ops
*ops
,
2316 enum target_object object
,
2317 const char *annex
, const gdb_byte
*buf
,
2318 ULONGEST offset
, LONGEST len
)
2320 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2324 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2325 the size of the transferred data. PADDING additional bytes are
2326 available in *BUF_P. This is a helper function for
2327 target_read_alloc; see the declaration of that function for more
2331 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2332 const char *annex
, gdb_byte
**buf_p
, int padding
)
2334 size_t buf_alloc
, buf_pos
;
2337 /* This function does not have a length parameter; it reads the
2338 entire OBJECT). Also, it doesn't support objects fetched partly
2339 from one target and partly from another (in a different stratum,
2340 e.g. a core file and an executable). Both reasons make it
2341 unsuitable for reading memory. */
2342 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2344 /* Start by reading up to 4K at a time. The target will throttle
2345 this number down if necessary. */
2347 buf
= xmalloc (buf_alloc
);
2351 ULONGEST xfered_len
;
2352 enum target_xfer_status status
;
2354 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2355 buf_pos
, buf_alloc
- buf_pos
- padding
,
2358 if (status
== TARGET_XFER_EOF
)
2360 /* Read all there was. */
2367 else if (status
!= TARGET_XFER_OK
)
2369 /* An error occurred. */
2371 return TARGET_XFER_E_IO
;
2374 buf_pos
+= xfered_len
;
2376 /* If the buffer is filling up, expand it. */
2377 if (buf_alloc
< buf_pos
* 2)
2380 buf
= xrealloc (buf
, buf_alloc
);
2387 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2388 the size of the transferred data. See the declaration in "target.h"
2389 function for more information about the return value. */
2392 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2393 const char *annex
, gdb_byte
**buf_p
)
2395 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2398 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2399 returned as a string, allocated using xmalloc. If an error occurs
2400 or the transfer is unsupported, NULL is returned. Empty objects
2401 are returned as allocated but empty strings. A warning is issued
2402 if the result contains any embedded NUL bytes. */
2405 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2410 LONGEST i
, transferred
;
2412 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2413 bufstr
= (char *) buffer
;
2415 if (transferred
< 0)
2418 if (transferred
== 0)
2419 return xstrdup ("");
2421 bufstr
[transferred
] = 0;
2423 /* Check for embedded NUL bytes; but allow trailing NULs. */
2424 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2427 warning (_("target object %d, annex %s, "
2428 "contained unexpected null characters"),
2429 (int) object
, annex
? annex
: "(none)");
2436 /* Memory transfer methods. */
2439 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2442 /* This method is used to read from an alternate, non-current
2443 target. This read must bypass the overlay support (as symbols
2444 don't match this target), and GDB's internal cache (wrong cache
2445 for this target). */
2446 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2448 memory_error (TARGET_XFER_E_IO
, addr
);
2452 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2453 int len
, enum bfd_endian byte_order
)
2455 gdb_byte buf
[sizeof (ULONGEST
)];
2457 gdb_assert (len
<= sizeof (buf
));
2458 get_target_memory (ops
, addr
, buf
, len
);
2459 return extract_unsigned_integer (buf
, len
, byte_order
);
2465 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2466 struct bp_target_info
*bp_tgt
)
2468 if (!may_insert_breakpoints
)
2470 warning (_("May not insert breakpoints"));
2474 return current_target
.to_insert_breakpoint (¤t_target
,
2481 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2482 struct bp_target_info
*bp_tgt
)
2484 /* This is kind of a weird case to handle, but the permission might
2485 have been changed after breakpoints were inserted - in which case
2486 we should just take the user literally and assume that any
2487 breakpoints should be left in place. */
2488 if (!may_insert_breakpoints
)
2490 warning (_("May not remove breakpoints"));
2494 return current_target
.to_remove_breakpoint (¤t_target
,
2499 target_info (char *args
, int from_tty
)
2501 struct target_ops
*t
;
2502 int has_all_mem
= 0;
2504 if (symfile_objfile
!= NULL
)
2505 printf_unfiltered (_("Symbols from \"%s\".\n"),
2506 objfile_name (symfile_objfile
));
2508 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2510 if (!(*t
->to_has_memory
) (t
))
2513 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2516 printf_unfiltered (_("\tWhile running this, "
2517 "GDB does not access memory from...\n"));
2518 printf_unfiltered ("%s:\n", t
->to_longname
);
2519 (t
->to_files_info
) (t
);
2520 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2524 /* This function is called before any new inferior is created, e.g.
2525 by running a program, attaching, or connecting to a target.
2526 It cleans up any state from previous invocations which might
2527 change between runs. This is a subset of what target_preopen
2528 resets (things which might change between targets). */
2531 target_pre_inferior (int from_tty
)
2533 /* Clear out solib state. Otherwise the solib state of the previous
2534 inferior might have survived and is entirely wrong for the new
2535 target. This has been observed on GNU/Linux using glibc 2.3. How
2547 Cannot access memory at address 0xdeadbeef
2550 /* In some OSs, the shared library list is the same/global/shared
2551 across inferiors. If code is shared between processes, so are
2552 memory regions and features. */
2553 if (!gdbarch_has_global_solist (target_gdbarch ()))
2555 no_shared_libraries (NULL
, from_tty
);
2557 invalidate_target_mem_regions ();
2559 target_clear_description ();
2562 agent_capability_invalidate ();
2565 /* Callback for iterate_over_inferiors. Gets rid of the given
2569 dispose_inferior (struct inferior
*inf
, void *args
)
2571 struct thread_info
*thread
;
2573 thread
= any_thread_of_process (inf
->pid
);
2576 switch_to_thread (thread
->ptid
);
2578 /* Core inferiors actually should be detached, not killed. */
2579 if (target_has_execution
)
2582 target_detach (NULL
, 0);
2588 /* This is to be called by the open routine before it does
2592 target_preopen (int from_tty
)
2596 if (have_inferiors ())
2599 || !have_live_inferiors ()
2600 || query (_("A program is being debugged already. Kill it? ")))
2601 iterate_over_inferiors (dispose_inferior
, NULL
);
2603 error (_("Program not killed."));
2606 /* Calling target_kill may remove the target from the stack. But if
2607 it doesn't (which seems like a win for UDI), remove it now. */
2608 /* Leave the exec target, though. The user may be switching from a
2609 live process to a core of the same program. */
2610 pop_all_targets_above (file_stratum
);
2612 target_pre_inferior (from_tty
);
2615 /* Detach a target after doing deferred register stores. */
2618 target_detach (const char *args
, int from_tty
)
2620 struct target_ops
* t
;
2622 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2623 /* Don't remove global breakpoints here. They're removed on
2624 disconnection from the target. */
2627 /* If we're in breakpoints-always-inserted mode, have to remove
2628 them before detaching. */
2629 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2631 prepare_for_detach ();
2633 current_target
.to_detach (¤t_target
, args
, from_tty
);
2635 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2640 target_disconnect (char *args
, int from_tty
)
2642 struct target_ops
*t
;
2644 /* If we're in breakpoints-always-inserted mode or if breakpoints
2645 are global across processes, we have to remove them before
2647 remove_breakpoints ();
2649 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2650 if (t
->to_disconnect
!= NULL
)
2653 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2655 t
->to_disconnect (t
, args
, from_tty
);
2663 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2665 struct target_ops
*t
;
2666 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2671 char *status_string
;
2672 char *options_string
;
2674 status_string
= target_waitstatus_to_string (status
);
2675 options_string
= target_options_to_string (options
);
2676 fprintf_unfiltered (gdb_stdlog
,
2677 "target_wait (%d, status, options={%s})"
2679 ptid_get_pid (ptid
), options_string
,
2680 ptid_get_pid (retval
), status_string
);
2681 xfree (status_string
);
2682 xfree (options_string
);
2689 target_pid_to_str (ptid_t ptid
)
2691 struct target_ops
*t
;
2693 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2695 if (t
->to_pid_to_str
!= NULL
)
2696 return (*t
->to_pid_to_str
) (t
, ptid
);
2699 return normal_pid_to_str (ptid
);
2703 target_thread_name (struct thread_info
*info
)
2705 struct target_ops
*t
;
2707 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2709 if (t
->to_thread_name
!= NULL
)
2710 return (*t
->to_thread_name
) (t
, info
);
2717 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2719 struct target_ops
*t
;
2721 target_dcache_invalidate ();
2723 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2725 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2726 ptid_get_pid (ptid
),
2727 step
? "step" : "continue",
2728 gdb_signal_to_name (signal
));
2730 registers_changed_ptid (ptid
);
2731 set_executing (ptid
, 1);
2732 set_running (ptid
, 1);
2733 clear_inline_frame_state (ptid
);
2737 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2739 struct target_ops
*t
;
2741 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2743 if (t
->to_pass_signals
!= NULL
)
2749 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2752 for (i
= 0; i
< numsigs
; i
++)
2753 if (pass_signals
[i
])
2754 fprintf_unfiltered (gdb_stdlog
, " %s",
2755 gdb_signal_to_name (i
));
2757 fprintf_unfiltered (gdb_stdlog
, " })\n");
2760 (*t
->to_pass_signals
) (t
, numsigs
, pass_signals
);
2767 target_program_signals (int numsigs
, unsigned char *program_signals
)
2769 struct target_ops
*t
;
2771 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2773 if (t
->to_program_signals
!= NULL
)
2779 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2782 for (i
= 0; i
< numsigs
; i
++)
2783 if (program_signals
[i
])
2784 fprintf_unfiltered (gdb_stdlog
, " %s",
2785 gdb_signal_to_name (i
));
2787 fprintf_unfiltered (gdb_stdlog
, " })\n");
2790 (*t
->to_program_signals
) (t
, numsigs
, program_signals
);
2796 /* Look through the list of possible targets for a target that can
2800 target_follow_fork (int follow_child
, int detach_fork
)
2802 struct target_ops
*t
;
2804 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2806 if (t
->to_follow_fork
!= NULL
)
2808 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2811 fprintf_unfiltered (gdb_stdlog
,
2812 "target_follow_fork (%d, %d) = %d\n",
2813 follow_child
, detach_fork
, retval
);
2818 /* Some target returned a fork event, but did not know how to follow it. */
2819 internal_error (__FILE__
, __LINE__
,
2820 _("could not find a target to follow fork"));
2824 target_mourn_inferior (void)
2826 struct target_ops
*t
;
2828 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2830 if (t
->to_mourn_inferior
!= NULL
)
2832 t
->to_mourn_inferior (t
);
2834 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2836 /* We no longer need to keep handles on any of the object files.
2837 Make sure to release them to avoid unnecessarily locking any
2838 of them while we're not actually debugging. */
2839 bfd_cache_close_all ();
2845 internal_error (__FILE__
, __LINE__
,
2846 _("could not find a target to follow mourn inferior"));
2849 /* Look for a target which can describe architectural features, starting
2850 from TARGET. If we find one, return its description. */
2852 const struct target_desc
*
2853 target_read_description (struct target_ops
*target
)
2855 struct target_ops
*t
;
2857 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2858 if (t
->to_read_description
!= NULL
)
2860 const struct target_desc
*tdesc
;
2862 tdesc
= t
->to_read_description (t
);
2870 /* The default implementation of to_search_memory.
2871 This implements a basic search of memory, reading target memory and
2872 performing the search here (as opposed to performing the search in on the
2873 target side with, for example, gdbserver). */
2876 simple_search_memory (struct target_ops
*ops
,
2877 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2878 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2879 CORE_ADDR
*found_addrp
)
2881 /* NOTE: also defined in find.c testcase. */
2882 #define SEARCH_CHUNK_SIZE 16000
2883 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2884 /* Buffer to hold memory contents for searching. */
2885 gdb_byte
*search_buf
;
2886 unsigned search_buf_size
;
2887 struct cleanup
*old_cleanups
;
2889 search_buf_size
= chunk_size
+ pattern_len
- 1;
2891 /* No point in trying to allocate a buffer larger than the search space. */
2892 if (search_space_len
< search_buf_size
)
2893 search_buf_size
= search_space_len
;
2895 search_buf
= malloc (search_buf_size
);
2896 if (search_buf
== NULL
)
2897 error (_("Unable to allocate memory to perform the search."));
2898 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2900 /* Prime the search buffer. */
2902 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2903 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2905 warning (_("Unable to access %s bytes of target "
2906 "memory at %s, halting search."),
2907 pulongest (search_buf_size
), hex_string (start_addr
));
2908 do_cleanups (old_cleanups
);
2912 /* Perform the search.
2914 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2915 When we've scanned N bytes we copy the trailing bytes to the start and
2916 read in another N bytes. */
2918 while (search_space_len
>= pattern_len
)
2920 gdb_byte
*found_ptr
;
2921 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2923 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2924 pattern
, pattern_len
);
2926 if (found_ptr
!= NULL
)
2928 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2930 *found_addrp
= found_addr
;
2931 do_cleanups (old_cleanups
);
2935 /* Not found in this chunk, skip to next chunk. */
2937 /* Don't let search_space_len wrap here, it's unsigned. */
2938 if (search_space_len
>= chunk_size
)
2939 search_space_len
-= chunk_size
;
2941 search_space_len
= 0;
2943 if (search_space_len
>= pattern_len
)
2945 unsigned keep_len
= search_buf_size
- chunk_size
;
2946 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2949 /* Copy the trailing part of the previous iteration to the front
2950 of the buffer for the next iteration. */
2951 gdb_assert (keep_len
== pattern_len
- 1);
2952 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2954 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2956 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2957 search_buf
+ keep_len
, read_addr
,
2958 nr_to_read
) != nr_to_read
)
2960 warning (_("Unable to access %s bytes of target "
2961 "memory at %s, halting search."),
2962 plongest (nr_to_read
),
2963 hex_string (read_addr
));
2964 do_cleanups (old_cleanups
);
2968 start_addr
+= chunk_size
;
2974 do_cleanups (old_cleanups
);
2978 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2979 sequence of bytes in PATTERN with length PATTERN_LEN.
2981 The result is 1 if found, 0 if not found, and -1 if there was an error
2982 requiring halting of the search (e.g. memory read error).
2983 If the pattern is found the address is recorded in FOUND_ADDRP. */
2986 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2987 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2988 CORE_ADDR
*found_addrp
)
2990 struct target_ops
*t
;
2993 /* We don't use INHERIT to set current_target.to_search_memory,
2994 so we have to scan the target stack and handle targetdebug
2998 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2999 hex_string (start_addr
));
3001 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3002 if (t
->to_search_memory
!= NULL
)
3007 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
3008 pattern
, pattern_len
, found_addrp
);
3012 /* If a special version of to_search_memory isn't available, use the
3014 found
= simple_search_memory (current_target
.beneath
,
3015 start_addr
, search_space_len
,
3016 pattern
, pattern_len
, found_addrp
);
3020 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
3025 /* Look through the currently pushed targets. If none of them will
3026 be able to restart the currently running process, issue an error
3030 target_require_runnable (void)
3032 struct target_ops
*t
;
3034 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3036 /* If this target knows how to create a new program, then
3037 assume we will still be able to after killing the current
3038 one. Either killing and mourning will not pop T, or else
3039 find_default_run_target will find it again. */
3040 if (t
->to_create_inferior
!= NULL
)
3043 /* Do not worry about thread_stratum targets that can not
3044 create inferiors. Assume they will be pushed again if
3045 necessary, and continue to the process_stratum. */
3046 if (t
->to_stratum
== thread_stratum
3047 || t
->to_stratum
== arch_stratum
)
3050 error (_("The \"%s\" target does not support \"run\". "
3051 "Try \"help target\" or \"continue\"."),
3055 /* This function is only called if the target is running. In that
3056 case there should have been a process_stratum target and it
3057 should either know how to create inferiors, or not... */
3058 internal_error (__FILE__
, __LINE__
, _("No targets found"));
3061 /* Look through the list of possible targets for a target that can
3062 execute a run or attach command without any other data. This is
3063 used to locate the default process stratum.
3065 If DO_MESG is not NULL, the result is always valid (error() is
3066 called for errors); else, return NULL on error. */
3068 static struct target_ops
*
3069 find_default_run_target (char *do_mesg
)
3071 struct target_ops
**t
;
3072 struct target_ops
*runable
= NULL
;
3077 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3080 if ((*t
)->to_can_run
&& target_can_run (*t
))
3090 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3099 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3101 struct target_ops
*t
;
3103 t
= find_default_run_target ("attach");
3104 (t
->to_attach
) (t
, args
, from_tty
);
3109 find_default_create_inferior (struct target_ops
*ops
,
3110 char *exec_file
, char *allargs
, char **env
,
3113 struct target_ops
*t
;
3115 t
= find_default_run_target ("run");
3116 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3121 find_default_can_async_p (struct target_ops
*ignore
)
3123 struct target_ops
*t
;
3125 /* This may be called before the target is pushed on the stack;
3126 look for the default process stratum. If there's none, gdb isn't
3127 configured with a native debugger, and target remote isn't
3129 t
= find_default_run_target (NULL
);
3130 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
3131 return (t
->to_can_async_p
) (t
);
3136 find_default_is_async_p (struct target_ops
*ignore
)
3138 struct target_ops
*t
;
3140 /* This may be called before the target is pushed on the stack;
3141 look for the default process stratum. If there's none, gdb isn't
3142 configured with a native debugger, and target remote isn't
3144 t
= find_default_run_target (NULL
);
3145 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
3146 return (t
->to_is_async_p
) (t
);
3151 find_default_supports_non_stop (struct target_ops
*self
)
3153 struct target_ops
*t
;
3155 t
= find_default_run_target (NULL
);
3156 if (t
&& t
->to_supports_non_stop
)
3157 return (t
->to_supports_non_stop
) (t
);
3162 target_supports_non_stop (void)
3164 struct target_ops
*t
;
3166 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3167 if (t
->to_supports_non_stop
)
3168 return t
->to_supports_non_stop (t
);
3173 /* Implement the "info proc" command. */
3176 target_info_proc (char *args
, enum info_proc_what what
)
3178 struct target_ops
*t
;
3180 /* If we're already connected to something that can get us OS
3181 related data, use it. Otherwise, try using the native
3183 if (current_target
.to_stratum
>= process_stratum
)
3184 t
= current_target
.beneath
;
3186 t
= find_default_run_target (NULL
);
3188 for (; t
!= NULL
; t
= t
->beneath
)
3190 if (t
->to_info_proc
!= NULL
)
3192 t
->to_info_proc (t
, args
, what
);
3195 fprintf_unfiltered (gdb_stdlog
,
3196 "target_info_proc (\"%s\", %d)\n", args
, what
);
3206 find_default_supports_disable_randomization (struct target_ops
*self
)
3208 struct target_ops
*t
;
3210 t
= find_default_run_target (NULL
);
3211 if (t
&& t
->to_supports_disable_randomization
)
3212 return (t
->to_supports_disable_randomization
) (t
);
3217 target_supports_disable_randomization (void)
3219 struct target_ops
*t
;
3221 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3222 if (t
->to_supports_disable_randomization
)
3223 return t
->to_supports_disable_randomization (t
);
3229 target_get_osdata (const char *type
)
3231 struct target_ops
*t
;
3233 /* If we're already connected to something that can get us OS
3234 related data, use it. Otherwise, try using the native
3236 if (current_target
.to_stratum
>= process_stratum
)
3237 t
= current_target
.beneath
;
3239 t
= find_default_run_target ("get OS data");
3244 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3247 /* Determine the current address space of thread PTID. */
3249 struct address_space
*
3250 target_thread_address_space (ptid_t ptid
)
3252 struct address_space
*aspace
;
3253 struct inferior
*inf
;
3254 struct target_ops
*t
;
3256 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3258 if (t
->to_thread_address_space
!= NULL
)
3260 aspace
= t
->to_thread_address_space (t
, ptid
);
3261 gdb_assert (aspace
);
3264 fprintf_unfiltered (gdb_stdlog
,
3265 "target_thread_address_space (%s) = %d\n",
3266 target_pid_to_str (ptid
),
3267 address_space_num (aspace
));
3272 /* Fall-back to the "main" address space of the inferior. */
3273 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3275 if (inf
== NULL
|| inf
->aspace
== NULL
)
3276 internal_error (__FILE__
, __LINE__
,
3277 _("Can't determine the current "
3278 "address space of thread %s\n"),
3279 target_pid_to_str (ptid
));
3285 /* Target file operations. */
3287 static struct target_ops
*
3288 default_fileio_target (void)
3290 /* If we're already connected to something that can perform
3291 file I/O, use it. Otherwise, try using the native target. */
3292 if (current_target
.to_stratum
>= process_stratum
)
3293 return current_target
.beneath
;
3295 return find_default_run_target ("file I/O");
3298 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3299 target file descriptor, or -1 if an error occurs (and set
3302 target_fileio_open (const char *filename
, int flags
, int mode
,
3305 struct target_ops
*t
;
3307 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3309 if (t
->to_fileio_open
!= NULL
)
3311 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3314 fprintf_unfiltered (gdb_stdlog
,
3315 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3316 filename
, flags
, mode
,
3317 fd
, fd
!= -1 ? 0 : *target_errno
);
3322 *target_errno
= FILEIO_ENOSYS
;
3326 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3327 Return the number of bytes written, or -1 if an error occurs
3328 (and set *TARGET_ERRNO). */
3330 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3331 ULONGEST offset
, int *target_errno
)
3333 struct target_ops
*t
;
3335 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3337 if (t
->to_fileio_pwrite
!= NULL
)
3339 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3343 fprintf_unfiltered (gdb_stdlog
,
3344 "target_fileio_pwrite (%d,...,%d,%s) "
3346 fd
, len
, pulongest (offset
),
3347 ret
, ret
!= -1 ? 0 : *target_errno
);
3352 *target_errno
= FILEIO_ENOSYS
;
3356 /* Read up to LEN bytes FD on the target into READ_BUF.
3357 Return the number of bytes read, or -1 if an error occurs
3358 (and set *TARGET_ERRNO). */
3360 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3361 ULONGEST offset
, int *target_errno
)
3363 struct target_ops
*t
;
3365 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3367 if (t
->to_fileio_pread
!= NULL
)
3369 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3373 fprintf_unfiltered (gdb_stdlog
,
3374 "target_fileio_pread (%d,...,%d,%s) "
3376 fd
, len
, pulongest (offset
),
3377 ret
, ret
!= -1 ? 0 : *target_errno
);
3382 *target_errno
= FILEIO_ENOSYS
;
3386 /* Close FD on the target. Return 0, or -1 if an error occurs
3387 (and set *TARGET_ERRNO). */
3389 target_fileio_close (int fd
, int *target_errno
)
3391 struct target_ops
*t
;
3393 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3395 if (t
->to_fileio_close
!= NULL
)
3397 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3400 fprintf_unfiltered (gdb_stdlog
,
3401 "target_fileio_close (%d) = %d (%d)\n",
3402 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3407 *target_errno
= FILEIO_ENOSYS
;
3411 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3412 occurs (and set *TARGET_ERRNO). */
3414 target_fileio_unlink (const char *filename
, int *target_errno
)
3416 struct target_ops
*t
;
3418 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3420 if (t
->to_fileio_unlink
!= NULL
)
3422 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3425 fprintf_unfiltered (gdb_stdlog
,
3426 "target_fileio_unlink (%s) = %d (%d)\n",
3427 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3432 *target_errno
= FILEIO_ENOSYS
;
3436 /* Read value of symbolic link FILENAME on the target. Return a
3437 null-terminated string allocated via xmalloc, or NULL if an error
3438 occurs (and set *TARGET_ERRNO). */
3440 target_fileio_readlink (const char *filename
, int *target_errno
)
3442 struct target_ops
*t
;
3444 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3446 if (t
->to_fileio_readlink
!= NULL
)
3448 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3451 fprintf_unfiltered (gdb_stdlog
,
3452 "target_fileio_readlink (%s) = %s (%d)\n",
3453 filename
, ret
? ret
: "(nil)",
3454 ret
? 0 : *target_errno
);
3459 *target_errno
= FILEIO_ENOSYS
;
3464 target_fileio_close_cleanup (void *opaque
)
3466 int fd
= *(int *) opaque
;
3469 target_fileio_close (fd
, &target_errno
);
3472 /* Read target file FILENAME. Store the result in *BUF_P and
3473 return the size of the transferred data. PADDING additional bytes are
3474 available in *BUF_P. This is a helper function for
3475 target_fileio_read_alloc; see the declaration of that function for more
3479 target_fileio_read_alloc_1 (const char *filename
,
3480 gdb_byte
**buf_p
, int padding
)
3482 struct cleanup
*close_cleanup
;
3483 size_t buf_alloc
, buf_pos
;
3489 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3493 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3495 /* Start by reading up to 4K at a time. The target will throttle
3496 this number down if necessary. */
3498 buf
= xmalloc (buf_alloc
);
3502 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3503 buf_alloc
- buf_pos
- padding
, buf_pos
,
3507 /* An error occurred. */
3508 do_cleanups (close_cleanup
);
3514 /* Read all there was. */
3515 do_cleanups (close_cleanup
);
3525 /* If the buffer is filling up, expand it. */
3526 if (buf_alloc
< buf_pos
* 2)
3529 buf
= xrealloc (buf
, buf_alloc
);
3536 /* Read target file FILENAME. Store the result in *BUF_P and return
3537 the size of the transferred data. See the declaration in "target.h"
3538 function for more information about the return value. */
3541 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3543 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3546 /* Read target file FILENAME. The result is NUL-terminated and
3547 returned as a string, allocated using xmalloc. If an error occurs
3548 or the transfer is unsupported, NULL is returned. Empty objects
3549 are returned as allocated but empty strings. A warning is issued
3550 if the result contains any embedded NUL bytes. */
3553 target_fileio_read_stralloc (const char *filename
)
3557 LONGEST i
, transferred
;
3559 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3560 bufstr
= (char *) buffer
;
3562 if (transferred
< 0)
3565 if (transferred
== 0)
3566 return xstrdup ("");
3568 bufstr
[transferred
] = 0;
3570 /* Check for embedded NUL bytes; but allow trailing NULs. */
3571 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3574 warning (_("target file %s "
3575 "contained unexpected null characters"),
3585 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3586 CORE_ADDR addr
, int len
)
3588 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3592 default_watchpoint_addr_within_range (struct target_ops
*target
,
3594 CORE_ADDR start
, int length
)
3596 return addr
>= start
&& addr
< start
+ length
;
3599 static struct gdbarch
*
3600 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3602 return target_gdbarch ();
3618 return_minus_one (void)
3630 * Find the next target down the stack from the specified target.
3634 find_target_beneath (struct target_ops
*t
)
3642 find_target_at (enum strata stratum
)
3644 struct target_ops
*t
;
3646 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3647 if (t
->to_stratum
== stratum
)
3654 /* The inferior process has died. Long live the inferior! */
3657 generic_mourn_inferior (void)
3661 ptid
= inferior_ptid
;
3662 inferior_ptid
= null_ptid
;
3664 /* Mark breakpoints uninserted in case something tries to delete a
3665 breakpoint while we delete the inferior's threads (which would
3666 fail, since the inferior is long gone). */
3667 mark_breakpoints_out ();
3669 if (!ptid_equal (ptid
, null_ptid
))
3671 int pid
= ptid_get_pid (ptid
);
3672 exit_inferior (pid
);
3675 /* Note this wipes step-resume breakpoints, so needs to be done
3676 after exit_inferior, which ends up referencing the step-resume
3677 breakpoints through clear_thread_inferior_resources. */
3678 breakpoint_init_inferior (inf_exited
);
3680 registers_changed ();
3682 reopen_exec_file ();
3683 reinit_frame_cache ();
3685 if (deprecated_detach_hook
)
3686 deprecated_detach_hook ();
3689 /* Convert a normal process ID to a string. Returns the string in a
3693 normal_pid_to_str (ptid_t ptid
)
3695 static char buf
[32];
3697 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3702 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3704 return normal_pid_to_str (ptid
);
3707 /* Error-catcher for target_find_memory_regions. */
3709 dummy_find_memory_regions (struct target_ops
*self
,
3710 find_memory_region_ftype ignore1
, void *ignore2
)
3712 error (_("Command not implemented for this target."));
3716 /* Error-catcher for target_make_corefile_notes. */
3718 dummy_make_corefile_notes (struct target_ops
*self
,
3719 bfd
*ignore1
, int *ignore2
)
3721 error (_("Command not implemented for this target."));
3725 /* Error-catcher for target_get_bookmark. */
3727 dummy_get_bookmark (struct target_ops
*self
, char *ignore1
, int ignore2
)
3733 /* Error-catcher for target_goto_bookmark. */
3735 dummy_goto_bookmark (struct target_ops
*self
, gdb_byte
*ignore
, int from_tty
)
3740 /* Set up the handful of non-empty slots needed by the dummy target
3744 init_dummy_target (void)
3746 dummy_target
.to_shortname
= "None";
3747 dummy_target
.to_longname
= "None";
3748 dummy_target
.to_doc
= "";
3749 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3750 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3751 dummy_target
.to_supports_disable_randomization
3752 = find_default_supports_disable_randomization
;
3753 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3754 dummy_target
.to_stratum
= dummy_stratum
;
3755 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
3756 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
3757 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
3758 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
3759 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3760 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3761 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3762 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3763 dummy_target
.to_has_execution
3764 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3765 dummy_target
.to_magic
= OPS_MAGIC
;
3767 install_dummy_methods (&dummy_target
);
3771 debug_to_open (char *args
, int from_tty
)
3773 debug_target
.to_open (args
, from_tty
);
3775 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3779 target_close (struct target_ops
*targ
)
3781 gdb_assert (!target_is_pushed (targ
));
3783 if (targ
->to_xclose
!= NULL
)
3784 targ
->to_xclose (targ
);
3785 else if (targ
->to_close
!= NULL
)
3786 targ
->to_close (targ
);
3789 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3793 target_attach (char *args
, int from_tty
)
3795 current_target
.to_attach (¤t_target
, args
, from_tty
);
3797 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3802 target_thread_alive (ptid_t ptid
)
3804 struct target_ops
*t
;
3806 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3808 if (t
->to_thread_alive
!= NULL
)
3812 retval
= t
->to_thread_alive (t
, ptid
);
3814 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3815 ptid_get_pid (ptid
), retval
);
3825 target_find_new_threads (void)
3827 struct target_ops
*t
;
3829 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3831 if (t
->to_find_new_threads
!= NULL
)
3833 t
->to_find_new_threads (t
);
3835 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3843 target_stop (ptid_t ptid
)
3847 warning (_("May not interrupt or stop the target, ignoring attempt"));
3851 (*current_target
.to_stop
) (¤t_target
, ptid
);
3855 debug_to_post_attach (struct target_ops
*self
, int pid
)
3857 debug_target
.to_post_attach (&debug_target
, pid
);
3859 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3862 /* Concatenate ELEM to LIST, a comma separate list, and return the
3863 result. The LIST incoming argument is released. */
3866 str_comma_list_concat_elem (char *list
, const char *elem
)
3869 return xstrdup (elem
);
3871 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3874 /* Helper for target_options_to_string. If OPT is present in
3875 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3876 Returns the new resulting string. OPT is removed from
3880 do_option (int *target_options
, char *ret
,
3881 int opt
, char *opt_str
)
3883 if ((*target_options
& opt
) != 0)
3885 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3886 *target_options
&= ~opt
;
3893 target_options_to_string (int target_options
)
3897 #define DO_TARG_OPTION(OPT) \
3898 ret = do_option (&target_options, ret, OPT, #OPT)
3900 DO_TARG_OPTION (TARGET_WNOHANG
);
3902 if (target_options
!= 0)
3903 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3911 debug_print_register (const char * func
,
3912 struct regcache
*regcache
, int regno
)
3914 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3916 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3917 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3918 && gdbarch_register_name (gdbarch
, regno
) != NULL
3919 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3920 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3921 gdbarch_register_name (gdbarch
, regno
));
3923 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3924 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3926 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3927 int i
, size
= register_size (gdbarch
, regno
);
3928 gdb_byte buf
[MAX_REGISTER_SIZE
];
3930 regcache_raw_collect (regcache
, regno
, buf
);
3931 fprintf_unfiltered (gdb_stdlog
, " = ");
3932 for (i
= 0; i
< size
; i
++)
3934 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3936 if (size
<= sizeof (LONGEST
))
3938 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3940 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3941 core_addr_to_string_nz (val
), plongest (val
));
3944 fprintf_unfiltered (gdb_stdlog
, "\n");
3948 target_fetch_registers (struct regcache
*regcache
, int regno
)
3950 struct target_ops
*t
;
3952 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3954 if (t
->to_fetch_registers
!= NULL
)
3956 t
->to_fetch_registers (t
, regcache
, regno
);
3958 debug_print_register ("target_fetch_registers", regcache
, regno
);
3965 target_store_registers (struct regcache
*regcache
, int regno
)
3967 struct target_ops
*t
;
3969 if (!may_write_registers
)
3970 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3972 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3975 debug_print_register ("target_store_registers", regcache
, regno
);
3980 target_core_of_thread (ptid_t ptid
)
3982 struct target_ops
*t
;
3984 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3986 if (t
->to_core_of_thread
!= NULL
)
3988 int retval
= t
->to_core_of_thread (t
, ptid
);
3991 fprintf_unfiltered (gdb_stdlog
,
3992 "target_core_of_thread (%d) = %d\n",
3993 ptid_get_pid (ptid
), retval
);
4002 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
4004 struct target_ops
*t
;
4006 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4008 if (t
->to_verify_memory
!= NULL
)
4010 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
4013 fprintf_unfiltered (gdb_stdlog
,
4014 "target_verify_memory (%s, %s) = %d\n",
4015 paddress (target_gdbarch (), memaddr
),
4025 /* The documentation for this function is in its prototype declaration in
4029 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4031 struct target_ops
*t
;
4033 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4034 if (t
->to_insert_mask_watchpoint
!= NULL
)
4038 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
4041 fprintf_unfiltered (gdb_stdlog
, "\
4042 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
4043 core_addr_to_string (addr
),
4044 core_addr_to_string (mask
), rw
, ret
);
4052 /* The documentation for this function is in its prototype declaration in
4056 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4058 struct target_ops
*t
;
4060 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4061 if (t
->to_remove_mask_watchpoint
!= NULL
)
4065 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
4068 fprintf_unfiltered (gdb_stdlog
, "\
4069 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
4070 core_addr_to_string (addr
),
4071 core_addr_to_string (mask
), rw
, ret
);
4079 /* The documentation for this function is in its prototype declaration
4083 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4085 struct target_ops
*t
;
4087 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4088 if (t
->to_masked_watch_num_registers
!= NULL
)
4089 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4094 /* The documentation for this function is in its prototype declaration
4098 target_ranged_break_num_registers (void)
4100 struct target_ops
*t
;
4102 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4103 if (t
->to_ranged_break_num_registers
!= NULL
)
4104 return t
->to_ranged_break_num_registers (t
);
4111 struct btrace_target_info
*
4112 target_enable_btrace (ptid_t ptid
)
4114 struct target_ops
*t
;
4116 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4117 if (t
->to_enable_btrace
!= NULL
)
4118 return t
->to_enable_btrace (t
, ptid
);
4127 target_disable_btrace (struct btrace_target_info
*btinfo
)
4129 struct target_ops
*t
;
4131 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4132 if (t
->to_disable_btrace
!= NULL
)
4134 t
->to_disable_btrace (t
, btinfo
);
4144 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4146 struct target_ops
*t
;
4148 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4149 if (t
->to_teardown_btrace
!= NULL
)
4151 t
->to_teardown_btrace (t
, btinfo
);
4161 target_read_btrace (VEC (btrace_block_s
) **btrace
,
4162 struct btrace_target_info
*btinfo
,
4163 enum btrace_read_type type
)
4165 struct target_ops
*t
;
4167 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4168 if (t
->to_read_btrace
!= NULL
)
4169 return t
->to_read_btrace (t
, btrace
, btinfo
, type
);
4172 return BTRACE_ERR_NOT_SUPPORTED
;
4178 target_stop_recording (void)
4180 struct target_ops
*t
;
4182 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4183 if (t
->to_stop_recording
!= NULL
)
4185 t
->to_stop_recording (t
);
4189 /* This is optional. */
4195 target_info_record (void)
4197 struct target_ops
*t
;
4199 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4200 if (t
->to_info_record
!= NULL
)
4202 t
->to_info_record (t
);
4212 target_save_record (const char *filename
)
4214 struct target_ops
*t
;
4216 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4217 if (t
->to_save_record
!= NULL
)
4219 t
->to_save_record (t
, filename
);
4229 target_supports_delete_record (void)
4231 struct target_ops
*t
;
4233 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4234 if (t
->to_delete_record
!= NULL
)
4243 target_delete_record (void)
4245 struct target_ops
*t
;
4247 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4248 if (t
->to_delete_record
!= NULL
)
4250 t
->to_delete_record (t
);
4260 target_record_is_replaying (void)
4262 struct target_ops
*t
;
4264 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4265 if (t
->to_record_is_replaying
!= NULL
)
4266 return t
->to_record_is_replaying (t
);
4274 target_goto_record_begin (void)
4276 struct target_ops
*t
;
4278 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4279 if (t
->to_goto_record_begin
!= NULL
)
4281 t
->to_goto_record_begin (t
);
4291 target_goto_record_end (void)
4293 struct target_ops
*t
;
4295 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4296 if (t
->to_goto_record_end
!= NULL
)
4298 t
->to_goto_record_end (t
);
4308 target_goto_record (ULONGEST insn
)
4310 struct target_ops
*t
;
4312 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4313 if (t
->to_goto_record
!= NULL
)
4315 t
->to_goto_record (t
, insn
);
4325 target_insn_history (int size
, int flags
)
4327 struct target_ops
*t
;
4329 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4330 if (t
->to_insn_history
!= NULL
)
4332 t
->to_insn_history (t
, size
, flags
);
4342 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4344 struct target_ops
*t
;
4346 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4347 if (t
->to_insn_history_from
!= NULL
)
4349 t
->to_insn_history_from (t
, from
, size
, flags
);
4359 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4361 struct target_ops
*t
;
4363 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4364 if (t
->to_insn_history_range
!= NULL
)
4366 t
->to_insn_history_range (t
, begin
, end
, flags
);
4376 target_call_history (int size
, int flags
)
4378 struct target_ops
*t
;
4380 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4381 if (t
->to_call_history
!= NULL
)
4383 t
->to_call_history (t
, size
, flags
);
4393 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4395 struct target_ops
*t
;
4397 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4398 if (t
->to_call_history_from
!= NULL
)
4400 t
->to_call_history_from (t
, begin
, size
, flags
);
4410 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4412 struct target_ops
*t
;
4414 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4415 if (t
->to_call_history_range
!= NULL
)
4417 t
->to_call_history_range (t
, begin
, end
, flags
);
4425 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
4427 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
4429 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4434 const struct frame_unwind
*
4435 target_get_unwinder (void)
4437 struct target_ops
*t
;
4439 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4440 if (t
->to_get_unwinder
!= NULL
)
4441 return t
->to_get_unwinder
;
4448 const struct frame_unwind
*
4449 target_get_tailcall_unwinder (void)
4451 struct target_ops
*t
;
4453 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4454 if (t
->to_get_tailcall_unwinder
!= NULL
)
4455 return t
->to_get_tailcall_unwinder
;
4463 forward_target_decr_pc_after_break (struct target_ops
*ops
,
4464 struct gdbarch
*gdbarch
)
4466 for (; ops
!= NULL
; ops
= ops
->beneath
)
4467 if (ops
->to_decr_pc_after_break
!= NULL
)
4468 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
4470 return gdbarch_decr_pc_after_break (gdbarch
);
4476 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
4478 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
4482 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4483 int write
, struct mem_attrib
*attrib
,
4484 struct target_ops
*target
)
4488 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4491 fprintf_unfiltered (gdb_stdlog
,
4492 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4493 paddress (target_gdbarch (), memaddr
), len
,
4494 write
? "write" : "read", retval
);
4500 fputs_unfiltered (", bytes =", gdb_stdlog
);
4501 for (i
= 0; i
< retval
; i
++)
4503 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4505 if (targetdebug
< 2 && i
> 0)
4507 fprintf_unfiltered (gdb_stdlog
, " ...");
4510 fprintf_unfiltered (gdb_stdlog
, "\n");
4513 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4517 fputc_unfiltered ('\n', gdb_stdlog
);
4523 debug_to_files_info (struct target_ops
*target
)
4525 debug_target
.to_files_info (target
);
4527 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4531 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4532 struct bp_target_info
*bp_tgt
)
4536 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4538 fprintf_unfiltered (gdb_stdlog
,
4539 "target_insert_breakpoint (%s, xxx) = %ld\n",
4540 core_addr_to_string (bp_tgt
->placed_address
),
4541 (unsigned long) retval
);
4546 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4547 struct bp_target_info
*bp_tgt
)
4551 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4553 fprintf_unfiltered (gdb_stdlog
,
4554 "target_remove_breakpoint (%s, xxx) = %ld\n",
4555 core_addr_to_string (bp_tgt
->placed_address
),
4556 (unsigned long) retval
);
4561 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4562 int type
, int cnt
, int from_tty
)
4566 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4567 type
, cnt
, from_tty
);
4569 fprintf_unfiltered (gdb_stdlog
,
4570 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4571 (unsigned long) type
,
4572 (unsigned long) cnt
,
4573 (unsigned long) from_tty
,
4574 (unsigned long) retval
);
4579 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4580 CORE_ADDR addr
, int len
)
4584 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4587 fprintf_unfiltered (gdb_stdlog
,
4588 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4589 core_addr_to_string (addr
), (unsigned long) len
,
4590 core_addr_to_string (retval
));
4595 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4596 CORE_ADDR addr
, int len
, int rw
,
4597 struct expression
*cond
)
4601 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4605 fprintf_unfiltered (gdb_stdlog
,
4606 "target_can_accel_watchpoint_condition "
4607 "(%s, %d, %d, %s) = %ld\n",
4608 core_addr_to_string (addr
), len
, rw
,
4609 host_address_to_string (cond
), (unsigned long) retval
);
4614 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4618 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4620 fprintf_unfiltered (gdb_stdlog
,
4621 "target_stopped_by_watchpoint () = %ld\n",
4622 (unsigned long) retval
);
4627 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4631 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4633 fprintf_unfiltered (gdb_stdlog
,
4634 "target_stopped_data_address ([%s]) = %ld\n",
4635 core_addr_to_string (*addr
),
4636 (unsigned long)retval
);
4641 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4643 CORE_ADDR start
, int length
)
4647 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4650 fprintf_filtered (gdb_stdlog
,
4651 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4652 core_addr_to_string (addr
), core_addr_to_string (start
),
4658 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4659 struct gdbarch
*gdbarch
,
4660 struct bp_target_info
*bp_tgt
)
4664 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4667 fprintf_unfiltered (gdb_stdlog
,
4668 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4669 core_addr_to_string (bp_tgt
->placed_address
),
4670 (unsigned long) retval
);
4675 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4676 struct gdbarch
*gdbarch
,
4677 struct bp_target_info
*bp_tgt
)
4681 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4684 fprintf_unfiltered (gdb_stdlog
,
4685 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4686 core_addr_to_string (bp_tgt
->placed_address
),
4687 (unsigned long) retval
);
4692 debug_to_insert_watchpoint (struct target_ops
*self
,
4693 CORE_ADDR addr
, int len
, int type
,
4694 struct expression
*cond
)
4698 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4699 addr
, len
, type
, cond
);
4701 fprintf_unfiltered (gdb_stdlog
,
4702 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4703 core_addr_to_string (addr
), len
, type
,
4704 host_address_to_string (cond
), (unsigned long) retval
);
4709 debug_to_remove_watchpoint (struct target_ops
*self
,
4710 CORE_ADDR addr
, int len
, int type
,
4711 struct expression
*cond
)
4715 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4716 addr
, len
, type
, cond
);
4718 fprintf_unfiltered (gdb_stdlog
,
4719 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4720 core_addr_to_string (addr
), len
, type
,
4721 host_address_to_string (cond
), (unsigned long) retval
);
4726 debug_to_terminal_init (struct target_ops
*self
)
4728 debug_target
.to_terminal_init (&debug_target
);
4730 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4734 debug_to_terminal_inferior (struct target_ops
*self
)
4736 debug_target
.to_terminal_inferior (&debug_target
);
4738 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4742 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4744 debug_target
.to_terminal_ours_for_output (&debug_target
);
4746 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4750 debug_to_terminal_ours (struct target_ops
*self
)
4752 debug_target
.to_terminal_ours (&debug_target
);
4754 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4758 debug_to_terminal_save_ours (struct target_ops
*self
)
4760 debug_target
.to_terminal_save_ours (&debug_target
);
4762 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4766 debug_to_terminal_info (struct target_ops
*self
,
4767 const char *arg
, int from_tty
)
4769 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4771 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4776 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4778 debug_target
.to_load (&debug_target
, args
, from_tty
);
4780 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4784 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4786 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4788 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4789 ptid_get_pid (ptid
));
4793 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4797 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4799 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4806 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4810 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4812 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4819 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4823 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4825 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4832 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4836 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4838 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4845 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4849 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4851 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4858 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4862 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4864 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4871 debug_to_has_exited (struct target_ops
*self
,
4872 int pid
, int wait_status
, int *exit_status
)
4876 has_exited
= debug_target
.to_has_exited (&debug_target
,
4877 pid
, wait_status
, exit_status
);
4879 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4880 pid
, wait_status
, *exit_status
, has_exited
);
4886 debug_to_can_run (struct target_ops
*self
)
4890 retval
= debug_target
.to_can_run (&debug_target
);
4892 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4897 static struct gdbarch
*
4898 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4900 struct gdbarch
*retval
;
4902 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4904 fprintf_unfiltered (gdb_stdlog
,
4905 "target_thread_architecture (%s) = %s [%s]\n",
4906 target_pid_to_str (ptid
),
4907 host_address_to_string (retval
),
4908 gdbarch_bfd_arch_info (retval
)->printable_name
);
4913 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4915 debug_target
.to_stop (&debug_target
, ptid
);
4917 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4918 target_pid_to_str (ptid
));
4922 debug_to_rcmd (struct target_ops
*self
, char *command
,
4923 struct ui_file
*outbuf
)
4925 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4926 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4930 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4934 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4936 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4943 setup_target_debug (void)
4945 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4947 current_target
.to_open
= debug_to_open
;
4948 current_target
.to_post_attach
= debug_to_post_attach
;
4949 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4950 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4951 current_target
.to_files_info
= debug_to_files_info
;
4952 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4953 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4954 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4955 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4956 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4957 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4958 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4959 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4960 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4961 current_target
.to_watchpoint_addr_within_range
4962 = debug_to_watchpoint_addr_within_range
;
4963 current_target
.to_region_ok_for_hw_watchpoint
4964 = debug_to_region_ok_for_hw_watchpoint
;
4965 current_target
.to_can_accel_watchpoint_condition
4966 = debug_to_can_accel_watchpoint_condition
;
4967 current_target
.to_terminal_init
= debug_to_terminal_init
;
4968 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4969 current_target
.to_terminal_ours_for_output
4970 = debug_to_terminal_ours_for_output
;
4971 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4972 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4973 current_target
.to_terminal_info
= debug_to_terminal_info
;
4974 current_target
.to_load
= debug_to_load
;
4975 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4976 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4977 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4978 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4979 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4980 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4981 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4982 current_target
.to_has_exited
= debug_to_has_exited
;
4983 current_target
.to_can_run
= debug_to_can_run
;
4984 current_target
.to_stop
= debug_to_stop
;
4985 current_target
.to_rcmd
= debug_to_rcmd
;
4986 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4987 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4991 static char targ_desc
[] =
4992 "Names of targets and files being debugged.\nShows the entire \
4993 stack of targets currently in use (including the exec-file,\n\
4994 core-file, and process, if any), as well as the symbol file name.";
4997 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4999 error (_("\"monitor\" command not supported by this target."));
5003 do_monitor_command (char *cmd
,
5006 target_rcmd (cmd
, gdb_stdtarg
);
5009 /* Print the name of each layers of our target stack. */
5012 maintenance_print_target_stack (char *cmd
, int from_tty
)
5014 struct target_ops
*t
;
5016 printf_filtered (_("The current target stack is:\n"));
5018 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
5020 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
5024 /* Controls if async mode is permitted. */
5025 int target_async_permitted
= 0;
5027 /* The set command writes to this variable. If the inferior is
5028 executing, target_async_permitted is *not* updated. */
5029 static int target_async_permitted_1
= 0;
5032 set_target_async_command (char *args
, int from_tty
,
5033 struct cmd_list_element
*c
)
5035 if (have_live_inferiors ())
5037 target_async_permitted_1
= target_async_permitted
;
5038 error (_("Cannot change this setting while the inferior is running."));
5041 target_async_permitted
= target_async_permitted_1
;
5045 show_target_async_command (struct ui_file
*file
, int from_tty
,
5046 struct cmd_list_element
*c
,
5049 fprintf_filtered (file
,
5050 _("Controlling the inferior in "
5051 "asynchronous mode is %s.\n"), value
);
5054 /* Temporary copies of permission settings. */
5056 static int may_write_registers_1
= 1;
5057 static int may_write_memory_1
= 1;
5058 static int may_insert_breakpoints_1
= 1;
5059 static int may_insert_tracepoints_1
= 1;
5060 static int may_insert_fast_tracepoints_1
= 1;
5061 static int may_stop_1
= 1;
5063 /* Make the user-set values match the real values again. */
5066 update_target_permissions (void)
5068 may_write_registers_1
= may_write_registers
;
5069 may_write_memory_1
= may_write_memory
;
5070 may_insert_breakpoints_1
= may_insert_breakpoints
;
5071 may_insert_tracepoints_1
= may_insert_tracepoints
;
5072 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
5073 may_stop_1
= may_stop
;
5076 /* The one function handles (most of) the permission flags in the same
5080 set_target_permissions (char *args
, int from_tty
,
5081 struct cmd_list_element
*c
)
5083 if (target_has_execution
)
5085 update_target_permissions ();
5086 error (_("Cannot change this setting while the inferior is running."));
5089 /* Make the real values match the user-changed values. */
5090 may_write_registers
= may_write_registers_1
;
5091 may_insert_breakpoints
= may_insert_breakpoints_1
;
5092 may_insert_tracepoints
= may_insert_tracepoints_1
;
5093 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
5094 may_stop
= may_stop_1
;
5095 update_observer_mode ();
5098 /* Set memory write permission independently of observer mode. */
5101 set_write_memory_permission (char *args
, int from_tty
,
5102 struct cmd_list_element
*c
)
5104 /* Make the real values match the user-changed values. */
5105 may_write_memory
= may_write_memory_1
;
5106 update_observer_mode ();
5111 initialize_targets (void)
5113 init_dummy_target ();
5114 push_target (&dummy_target
);
5116 add_info ("target", target_info
, targ_desc
);
5117 add_info ("files", target_info
, targ_desc
);
5119 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
5120 Set target debugging."), _("\
5121 Show target debugging."), _("\
5122 When non-zero, target debugging is enabled. Higher numbers are more\n\
5123 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
5127 &setdebuglist
, &showdebuglist
);
5129 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
5130 &trust_readonly
, _("\
5131 Set mode for reading from readonly sections."), _("\
5132 Show mode for reading from readonly sections."), _("\
5133 When this mode is on, memory reads from readonly sections (such as .text)\n\
5134 will be read from the object file instead of from the target. This will\n\
5135 result in significant performance improvement for remote targets."),
5137 show_trust_readonly
,
5138 &setlist
, &showlist
);
5140 add_com ("monitor", class_obscure
, do_monitor_command
,
5141 _("Send a command to the remote monitor (remote targets only)."));
5143 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5144 _("Print the name of each layer of the internal target stack."),
5145 &maintenanceprintlist
);
5147 add_setshow_boolean_cmd ("target-async", no_class
,
5148 &target_async_permitted_1
, _("\
5149 Set whether gdb controls the inferior in asynchronous mode."), _("\
5150 Show whether gdb controls the inferior in asynchronous mode."), _("\
5151 Tells gdb whether to control the inferior in asynchronous mode."),
5152 set_target_async_command
,
5153 show_target_async_command
,
5157 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5158 &may_write_registers_1
, _("\
5159 Set permission to write into registers."), _("\
5160 Show permission to write into registers."), _("\
5161 When this permission is on, GDB may write into the target's registers.\n\
5162 Otherwise, any sort of write attempt will result in an error."),
5163 set_target_permissions
, NULL
,
5164 &setlist
, &showlist
);
5166 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5167 &may_write_memory_1
, _("\
5168 Set permission to write into target memory."), _("\
5169 Show permission to write into target memory."), _("\
5170 When this permission is on, GDB may write into the target's memory.\n\
5171 Otherwise, any sort of write attempt will result in an error."),
5172 set_write_memory_permission
, NULL
,
5173 &setlist
, &showlist
);
5175 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5176 &may_insert_breakpoints_1
, _("\
5177 Set permission to insert breakpoints in the target."), _("\
5178 Show permission to insert breakpoints in the target."), _("\
5179 When this permission is on, GDB may insert breakpoints in the program.\n\
5180 Otherwise, any sort of insertion attempt will result in an error."),
5181 set_target_permissions
, NULL
,
5182 &setlist
, &showlist
);
5184 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5185 &may_insert_tracepoints_1
, _("\
5186 Set permission to insert tracepoints in the target."), _("\
5187 Show permission to insert tracepoints in the target."), _("\
5188 When this permission is on, GDB may insert tracepoints in the program.\n\
5189 Otherwise, any sort of insertion attempt will result in an error."),
5190 set_target_permissions
, NULL
,
5191 &setlist
, &showlist
);
5193 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5194 &may_insert_fast_tracepoints_1
, _("\
5195 Set permission to insert fast tracepoints in the target."), _("\
5196 Show permission to insert fast tracepoints in the target."), _("\
5197 When this permission is on, GDB may insert fast tracepoints.\n\
5198 Otherwise, any sort of insertion attempt will result in an error."),
5199 set_target_permissions
, NULL
,
5200 &setlist
, &showlist
);
5202 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5204 Set permission to interrupt or signal the target."), _("\
5205 Show permission to interrupt or signal the target."), _("\
5206 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5207 Otherwise, any attempt to interrupt or stop will be ignored."),
5208 set_target_permissions
, NULL
,
5209 &setlist
, &showlist
);