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 INHERIT (to_post_startup_inferior
, t
);
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_post_startup_inferior
,
738 (void (*) (struct target_ops
*, ptid_t
))
740 de_fault (to_insert_fork_catchpoint
,
741 (int (*) (struct target_ops
*, int))
743 de_fault (to_remove_fork_catchpoint
,
744 (int (*) (struct target_ops
*, int))
746 de_fault (to_insert_vfork_catchpoint
,
747 (int (*) (struct target_ops
*, int))
749 de_fault (to_remove_vfork_catchpoint
,
750 (int (*) (struct target_ops
*, int))
752 de_fault (to_insert_exec_catchpoint
,
753 (int (*) (struct target_ops
*, int))
755 de_fault (to_remove_exec_catchpoint
,
756 (int (*) (struct target_ops
*, int))
758 de_fault (to_set_syscall_catchpoint
,
759 (int (*) (struct target_ops
*, int, int, int, int, int *))
761 de_fault (to_has_exited
,
762 (int (*) (struct target_ops
*, int, int, int *))
764 de_fault (to_can_run
,
765 (int (*) (struct target_ops
*))
767 de_fault (to_extra_thread_info
,
768 (char *(*) (struct target_ops
*, struct thread_info
*))
770 de_fault (to_thread_name
,
771 (char *(*) (struct target_ops
*, struct thread_info
*))
774 (void (*) (struct target_ops
*, ptid_t
))
776 de_fault (to_pid_to_exec_file
,
777 (char *(*) (struct target_ops
*, int))
779 de_fault (to_thread_architecture
,
780 default_thread_architecture
);
781 current_target
.to_read_description
= NULL
;
782 de_fault (to_get_ada_task_ptid
,
783 (ptid_t (*) (struct target_ops
*, long, long))
784 default_get_ada_task_ptid
);
785 de_fault (to_supports_multi_process
,
786 (int (*) (struct target_ops
*))
788 de_fault (to_supports_enable_disable_tracepoint
,
789 (int (*) (struct target_ops
*))
791 de_fault (to_supports_string_tracing
,
792 (int (*) (struct target_ops
*))
794 de_fault (to_trace_init
,
795 (void (*) (struct target_ops
*))
797 de_fault (to_download_tracepoint
,
798 (void (*) (struct target_ops
*, struct bp_location
*))
800 de_fault (to_can_download_tracepoint
,
801 (int (*) (struct target_ops
*))
803 de_fault (to_download_trace_state_variable
,
804 (void (*) (struct target_ops
*, struct trace_state_variable
*))
806 de_fault (to_enable_tracepoint
,
807 (void (*) (struct target_ops
*, struct bp_location
*))
809 de_fault (to_disable_tracepoint
,
810 (void (*) (struct target_ops
*, struct bp_location
*))
812 de_fault (to_trace_set_readonly_regions
,
813 (void (*) (struct target_ops
*))
815 de_fault (to_trace_start
,
816 (void (*) (struct target_ops
*))
818 de_fault (to_get_trace_status
,
819 (int (*) (struct target_ops
*, struct trace_status
*))
821 de_fault (to_get_tracepoint_status
,
822 (void (*) (struct target_ops
*, struct breakpoint
*,
823 struct uploaded_tp
*))
825 de_fault (to_trace_stop
,
826 (void (*) (struct target_ops
*))
828 de_fault (to_trace_find
,
829 (int (*) (struct target_ops
*,
830 enum trace_find_type
, int, CORE_ADDR
, CORE_ADDR
, int *))
832 de_fault (to_get_trace_state_variable_value
,
833 (int (*) (struct target_ops
*, int, LONGEST
*))
835 de_fault (to_save_trace_data
,
836 (int (*) (struct target_ops
*, const char *))
838 de_fault (to_upload_tracepoints
,
839 (int (*) (struct target_ops
*, struct uploaded_tp
**))
841 de_fault (to_upload_trace_state_variables
,
842 (int (*) (struct target_ops
*, struct uploaded_tsv
**))
844 de_fault (to_get_raw_trace_data
,
845 (LONGEST (*) (struct target_ops
*, gdb_byte
*, ULONGEST
, LONGEST
))
847 de_fault (to_get_min_fast_tracepoint_insn_len
,
848 (int (*) (struct target_ops
*))
850 de_fault (to_set_disconnected_tracing
,
851 (void (*) (struct target_ops
*, int))
853 de_fault (to_set_circular_trace_buffer
,
854 (void (*) (struct target_ops
*, int))
856 de_fault (to_set_trace_buffer_size
,
857 (void (*) (struct target_ops
*, LONGEST
))
859 de_fault (to_set_trace_notes
,
860 (int (*) (struct target_ops
*,
861 const char *, const char *, const char *))
863 de_fault (to_get_tib_address
,
864 (int (*) (struct target_ops
*, ptid_t
, CORE_ADDR
*))
866 de_fault (to_set_permissions
,
867 (void (*) (struct target_ops
*))
869 de_fault (to_static_tracepoint_marker_at
,
870 (int (*) (struct target_ops
*,
871 CORE_ADDR
, struct static_tracepoint_marker
*))
873 de_fault (to_static_tracepoint_markers_by_strid
,
874 (VEC(static_tracepoint_marker_p
) * (*) (struct target_ops
*,
877 de_fault (to_traceframe_info
,
878 (struct traceframe_info
* (*) (struct target_ops
*))
880 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
881 (int (*) (struct target_ops
*))
883 de_fault (to_can_run_breakpoint_commands
,
884 (int (*) (struct target_ops
*))
886 de_fault (to_use_agent
,
887 (int (*) (struct target_ops
*, int))
889 de_fault (to_can_use_agent
,
890 (int (*) (struct target_ops
*))
892 de_fault (to_augmented_libraries_svr4_read
,
893 (int (*) (struct target_ops
*))
895 de_fault (to_execution_direction
, default_execution_direction
);
899 /* Finally, position the target-stack beneath the squashed
900 "current_target". That way code looking for a non-inherited
901 target method can quickly and simply find it. */
902 current_target
.beneath
= target_stack
;
905 setup_target_debug ();
908 /* Push a new target type into the stack of the existing target accessors,
909 possibly superseding some of the existing accessors.
911 Rather than allow an empty stack, we always have the dummy target at
912 the bottom stratum, so we can call the function vectors without
916 push_target (struct target_ops
*t
)
918 struct target_ops
**cur
;
920 /* Check magic number. If wrong, it probably means someone changed
921 the struct definition, but not all the places that initialize one. */
922 if (t
->to_magic
!= OPS_MAGIC
)
924 fprintf_unfiltered (gdb_stderr
,
925 "Magic number of %s target struct wrong\n",
927 internal_error (__FILE__
, __LINE__
,
928 _("failed internal consistency check"));
931 /* Find the proper stratum to install this target in. */
932 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
934 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
938 /* If there's already targets at this stratum, remove them. */
939 /* FIXME: cagney/2003-10-15: I think this should be popping all
940 targets to CUR, and not just those at this stratum level. */
941 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
943 /* There's already something at this stratum level. Close it,
944 and un-hook it from the stack. */
945 struct target_ops
*tmp
= (*cur
);
947 (*cur
) = (*cur
)->beneath
;
952 /* We have removed all targets in our stratum, now add the new one. */
956 update_current_target ();
959 /* Remove a target_ops vector from the stack, wherever it may be.
960 Return how many times it was removed (0 or 1). */
963 unpush_target (struct target_ops
*t
)
965 struct target_ops
**cur
;
966 struct target_ops
*tmp
;
968 if (t
->to_stratum
== dummy_stratum
)
969 internal_error (__FILE__
, __LINE__
,
970 _("Attempt to unpush the dummy target"));
972 /* Look for the specified target. Note that we assume that a target
973 can only occur once in the target stack. */
975 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
981 /* If we don't find target_ops, quit. Only open targets should be
986 /* Unchain the target. */
988 (*cur
) = (*cur
)->beneath
;
991 update_current_target ();
993 /* Finally close the target. Note we do this after unchaining, so
994 any target method calls from within the target_close
995 implementation don't end up in T anymore. */
1002 pop_all_targets_above (enum strata above_stratum
)
1004 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
1006 if (!unpush_target (target_stack
))
1008 fprintf_unfiltered (gdb_stderr
,
1009 "pop_all_targets couldn't find target %s\n",
1010 target_stack
->to_shortname
);
1011 internal_error (__FILE__
, __LINE__
,
1012 _("failed internal consistency check"));
1019 pop_all_targets (void)
1021 pop_all_targets_above (dummy_stratum
);
1024 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
1027 target_is_pushed (struct target_ops
*t
)
1029 struct target_ops
**cur
;
1031 /* Check magic number. If wrong, it probably means someone changed
1032 the struct definition, but not all the places that initialize one. */
1033 if (t
->to_magic
!= OPS_MAGIC
)
1035 fprintf_unfiltered (gdb_stderr
,
1036 "Magic number of %s target struct wrong\n",
1038 internal_error (__FILE__
, __LINE__
,
1039 _("failed internal consistency check"));
1042 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1049 /* Using the objfile specified in OBJFILE, find the address for the
1050 current thread's thread-local storage with offset OFFSET. */
1052 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1054 volatile CORE_ADDR addr
= 0;
1055 struct target_ops
*target
;
1057 for (target
= current_target
.beneath
;
1059 target
= target
->beneath
)
1061 if (target
->to_get_thread_local_address
!= NULL
)
1066 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
1068 ptid_t ptid
= inferior_ptid
;
1069 volatile struct gdb_exception ex
;
1071 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1075 /* Fetch the load module address for this objfile. */
1076 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1078 /* If it's 0, throw the appropriate exception. */
1080 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1081 _("TLS load module not found"));
1083 addr
= target
->to_get_thread_local_address (target
, ptid
,
1086 /* If an error occurred, print TLS related messages here. Otherwise,
1087 throw the error to some higher catcher. */
1090 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1094 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1095 error (_("Cannot find thread-local variables "
1096 "in this thread library."));
1098 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1099 if (objfile_is_library
)
1100 error (_("Cannot find shared library `%s' in dynamic"
1101 " linker's load module list"), objfile_name (objfile
));
1103 error (_("Cannot find executable file `%s' in dynamic"
1104 " linker's load module list"), objfile_name (objfile
));
1106 case TLS_NOT_ALLOCATED_YET_ERROR
:
1107 if (objfile_is_library
)
1108 error (_("The inferior has not yet allocated storage for"
1109 " thread-local variables in\n"
1110 "the shared library `%s'\n"
1112 objfile_name (objfile
), target_pid_to_str (ptid
));
1114 error (_("The inferior has not yet allocated storage for"
1115 " thread-local variables in\n"
1116 "the executable `%s'\n"
1118 objfile_name (objfile
), target_pid_to_str (ptid
));
1120 case TLS_GENERIC_ERROR
:
1121 if (objfile_is_library
)
1122 error (_("Cannot find thread-local storage for %s, "
1123 "shared library %s:\n%s"),
1124 target_pid_to_str (ptid
),
1125 objfile_name (objfile
), ex
.message
);
1127 error (_("Cannot find thread-local storage for %s, "
1128 "executable file %s:\n%s"),
1129 target_pid_to_str (ptid
),
1130 objfile_name (objfile
), ex
.message
);
1133 throw_exception (ex
);
1138 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1139 TLS is an ABI-specific thing. But we don't do that yet. */
1141 error (_("Cannot find thread-local variables on this target"));
1147 target_xfer_status_to_string (enum target_xfer_status err
)
1149 #define CASE(X) case X: return #X
1152 CASE(TARGET_XFER_E_IO
);
1153 CASE(TARGET_XFER_E_UNAVAILABLE
);
1162 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1164 /* target_read_string -- read a null terminated string, up to LEN bytes,
1165 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1166 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1167 is responsible for freeing it. Return the number of bytes successfully
1171 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1173 int tlen
, offset
, i
;
1177 int buffer_allocated
;
1179 unsigned int nbytes_read
= 0;
1181 gdb_assert (string
);
1183 /* Small for testing. */
1184 buffer_allocated
= 4;
1185 buffer
= xmalloc (buffer_allocated
);
1190 tlen
= MIN (len
, 4 - (memaddr
& 3));
1191 offset
= memaddr
& 3;
1193 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1196 /* The transfer request might have crossed the boundary to an
1197 unallocated region of memory. Retry the transfer, requesting
1201 errcode
= target_read_memory (memaddr
, buf
, 1);
1206 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1210 bytes
= bufptr
- buffer
;
1211 buffer_allocated
*= 2;
1212 buffer
= xrealloc (buffer
, buffer_allocated
);
1213 bufptr
= buffer
+ bytes
;
1216 for (i
= 0; i
< tlen
; i
++)
1218 *bufptr
++ = buf
[i
+ offset
];
1219 if (buf
[i
+ offset
] == '\000')
1221 nbytes_read
+= i
+ 1;
1228 nbytes_read
+= tlen
;
1237 struct target_section_table
*
1238 target_get_section_table (struct target_ops
*target
)
1240 struct target_ops
*t
;
1243 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1245 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1246 if (t
->to_get_section_table
!= NULL
)
1247 return (*t
->to_get_section_table
) (t
);
1252 /* Find a section containing ADDR. */
1254 struct target_section
*
1255 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1257 struct target_section_table
*table
= target_get_section_table (target
);
1258 struct target_section
*secp
;
1263 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1265 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1271 /* Read memory from the live target, even if currently inspecting a
1272 traceframe. The return is the same as that of target_read. */
1274 static enum target_xfer_status
1275 target_read_live_memory (enum target_object object
,
1276 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1277 ULONGEST
*xfered_len
)
1279 enum target_xfer_status ret
;
1280 struct cleanup
*cleanup
;
1282 /* Switch momentarily out of tfind mode so to access live memory.
1283 Note that this must not clear global state, such as the frame
1284 cache, which must still remain valid for the previous traceframe.
1285 We may be _building_ the frame cache at this point. */
1286 cleanup
= make_cleanup_restore_traceframe_number ();
1287 set_traceframe_number (-1);
1289 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1290 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1292 do_cleanups (cleanup
);
1296 /* Using the set of read-only target sections of OPS, read live
1297 read-only memory. Note that the actual reads start from the
1298 top-most target again.
1300 For interface/parameters/return description see target.h,
1303 static enum target_xfer_status
1304 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1305 enum target_object object
,
1306 gdb_byte
*readbuf
, ULONGEST memaddr
,
1307 ULONGEST len
, ULONGEST
*xfered_len
)
1309 struct target_section
*secp
;
1310 struct target_section_table
*table
;
1312 secp
= target_section_by_addr (ops
, memaddr
);
1314 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1315 secp
->the_bfd_section
)
1318 struct target_section
*p
;
1319 ULONGEST memend
= memaddr
+ len
;
1321 table
= target_get_section_table (ops
);
1323 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1325 if (memaddr
>= p
->addr
)
1327 if (memend
<= p
->endaddr
)
1329 /* Entire transfer is within this section. */
1330 return target_read_live_memory (object
, memaddr
,
1331 readbuf
, len
, xfered_len
);
1333 else if (memaddr
>= p
->endaddr
)
1335 /* This section ends before the transfer starts. */
1340 /* This section overlaps the transfer. Just do half. */
1341 len
= p
->endaddr
- memaddr
;
1342 return target_read_live_memory (object
, memaddr
,
1343 readbuf
, len
, xfered_len
);
1349 return TARGET_XFER_EOF
;
1352 /* Read memory from more than one valid target. A core file, for
1353 instance, could have some of memory but delegate other bits to
1354 the target below it. So, we must manually try all targets. */
1356 static enum target_xfer_status
1357 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1358 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1359 ULONGEST
*xfered_len
)
1361 enum target_xfer_status res
;
1365 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1366 readbuf
, writebuf
, memaddr
, len
,
1368 if (res
== TARGET_XFER_OK
)
1371 /* Stop if the target reports that the memory is not available. */
1372 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1375 /* We want to continue past core files to executables, but not
1376 past a running target's memory. */
1377 if (ops
->to_has_all_memory (ops
))
1382 while (ops
!= NULL
);
1387 /* Perform a partial memory transfer.
1388 For docs see target.h, to_xfer_partial. */
1390 static enum target_xfer_status
1391 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1392 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1393 ULONGEST len
, ULONGEST
*xfered_len
)
1395 enum target_xfer_status res
;
1397 struct mem_region
*region
;
1398 struct inferior
*inf
;
1400 /* For accesses to unmapped overlay sections, read directly from
1401 files. Must do this first, as MEMADDR may need adjustment. */
1402 if (readbuf
!= NULL
&& overlay_debugging
)
1404 struct obj_section
*section
= find_pc_overlay (memaddr
);
1406 if (pc_in_unmapped_range (memaddr
, section
))
1408 struct target_section_table
*table
1409 = target_get_section_table (ops
);
1410 const char *section_name
= section
->the_bfd_section
->name
;
1412 memaddr
= overlay_mapped_address (memaddr
, section
);
1413 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1414 memaddr
, len
, xfered_len
,
1416 table
->sections_end
,
1421 /* Try the executable files, if "trust-readonly-sections" is set. */
1422 if (readbuf
!= NULL
&& trust_readonly
)
1424 struct target_section
*secp
;
1425 struct target_section_table
*table
;
1427 secp
= target_section_by_addr (ops
, memaddr
);
1429 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1430 secp
->the_bfd_section
)
1433 table
= target_get_section_table (ops
);
1434 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1435 memaddr
, len
, xfered_len
,
1437 table
->sections_end
,
1442 /* If reading unavailable memory in the context of traceframes, and
1443 this address falls within a read-only section, fallback to
1444 reading from live memory. */
1445 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1447 VEC(mem_range_s
) *available
;
1449 /* If we fail to get the set of available memory, then the
1450 target does not support querying traceframe info, and so we
1451 attempt reading from the traceframe anyway (assuming the
1452 target implements the old QTro packet then). */
1453 if (traceframe_available_memory (&available
, memaddr
, len
))
1455 struct cleanup
*old_chain
;
1457 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1459 if (VEC_empty (mem_range_s
, available
)
1460 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1462 /* Don't read into the traceframe's available
1464 if (!VEC_empty (mem_range_s
, available
))
1466 LONGEST oldlen
= len
;
1468 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1469 gdb_assert (len
<= oldlen
);
1472 do_cleanups (old_chain
);
1474 /* This goes through the topmost target again. */
1475 res
= memory_xfer_live_readonly_partial (ops
, object
,
1478 if (res
== TARGET_XFER_OK
)
1479 return TARGET_XFER_OK
;
1482 /* No use trying further, we know some memory starting
1483 at MEMADDR isn't available. */
1485 return TARGET_XFER_E_UNAVAILABLE
;
1489 /* Don't try to read more than how much is available, in
1490 case the target implements the deprecated QTro packet to
1491 cater for older GDBs (the target's knowledge of read-only
1492 sections may be outdated by now). */
1493 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1495 do_cleanups (old_chain
);
1499 /* Try GDB's internal data cache. */
1500 region
= lookup_mem_region (memaddr
);
1501 /* region->hi == 0 means there's no upper bound. */
1502 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1505 reg_len
= region
->hi
- memaddr
;
1507 switch (region
->attrib
.mode
)
1510 if (writebuf
!= NULL
)
1511 return TARGET_XFER_E_IO
;
1515 if (readbuf
!= NULL
)
1516 return TARGET_XFER_E_IO
;
1520 /* We only support writing to flash during "load" for now. */
1521 if (writebuf
!= NULL
)
1522 error (_("Writing to flash memory forbidden in this context"));
1526 return TARGET_XFER_E_IO
;
1529 if (!ptid_equal (inferior_ptid
, null_ptid
))
1530 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1535 /* The dcache reads whole cache lines; that doesn't play well
1536 with reading from a trace buffer, because reading outside of
1537 the collected memory range fails. */
1538 && get_traceframe_number () == -1
1539 && (region
->attrib
.cache
1540 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1541 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1543 DCACHE
*dcache
= target_dcache_get_or_init ();
1546 if (readbuf
!= NULL
)
1547 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1549 /* FIXME drow/2006-08-09: If we're going to preserve const
1550 correctness dcache_xfer_memory should take readbuf and
1552 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1555 return TARGET_XFER_E_IO
;
1558 *xfered_len
= (ULONGEST
) l
;
1559 return TARGET_XFER_OK
;
1563 /* If none of those methods found the memory we wanted, fall back
1564 to a target partial transfer. Normally a single call to
1565 to_xfer_partial is enough; if it doesn't recognize an object
1566 it will call the to_xfer_partial of the next target down.
1567 But for memory this won't do. Memory is the only target
1568 object which can be read from more than one valid target.
1569 A core file, for instance, could have some of memory but
1570 delegate other bits to the target below it. So, we must
1571 manually try all targets. */
1573 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1576 /* Make sure the cache gets updated no matter what - if we are writing
1577 to the stack. Even if this write is not tagged as such, we still need
1578 to update the cache. */
1580 if (res
== TARGET_XFER_OK
1583 && target_dcache_init_p ()
1584 && !region
->attrib
.cache
1585 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1586 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1588 DCACHE
*dcache
= target_dcache_get ();
1590 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1593 /* If we still haven't got anything, return the last error. We
1598 /* Perform a partial memory transfer. For docs see target.h,
1601 static enum target_xfer_status
1602 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1603 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1604 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1606 enum target_xfer_status res
;
1608 /* Zero length requests are ok and require no work. */
1610 return TARGET_XFER_EOF
;
1612 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1613 breakpoint insns, thus hiding out from higher layers whether
1614 there are software breakpoints inserted in the code stream. */
1615 if (readbuf
!= NULL
)
1617 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1620 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1621 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1626 struct cleanup
*old_chain
;
1628 /* A large write request is likely to be partially satisfied
1629 by memory_xfer_partial_1. We will continually malloc
1630 and free a copy of the entire write request for breakpoint
1631 shadow handling even though we only end up writing a small
1632 subset of it. Cap writes to 4KB to mitigate this. */
1633 len
= min (4096, len
);
1635 buf
= xmalloc (len
);
1636 old_chain
= make_cleanup (xfree
, buf
);
1637 memcpy (buf
, writebuf
, len
);
1639 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1640 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1643 do_cleanups (old_chain
);
1650 restore_show_memory_breakpoints (void *arg
)
1652 show_memory_breakpoints
= (uintptr_t) arg
;
1656 make_show_memory_breakpoints_cleanup (int show
)
1658 int current
= show_memory_breakpoints
;
1660 show_memory_breakpoints
= show
;
1661 return make_cleanup (restore_show_memory_breakpoints
,
1662 (void *) (uintptr_t) current
);
1665 /* For docs see target.h, to_xfer_partial. */
1667 enum target_xfer_status
1668 target_xfer_partial (struct target_ops
*ops
,
1669 enum target_object object
, const char *annex
,
1670 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1671 ULONGEST offset
, ULONGEST len
,
1672 ULONGEST
*xfered_len
)
1674 enum target_xfer_status retval
;
1676 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1678 /* Transfer is done when LEN is zero. */
1680 return TARGET_XFER_EOF
;
1682 if (writebuf
&& !may_write_memory
)
1683 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1684 core_addr_to_string_nz (offset
), plongest (len
));
1688 /* If this is a memory transfer, let the memory-specific code
1689 have a look at it instead. Memory transfers are more
1691 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1692 || object
== TARGET_OBJECT_CODE_MEMORY
)
1693 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1694 writebuf
, offset
, len
, xfered_len
);
1695 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1697 /* Request the normal memory object from other layers. */
1698 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1702 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1703 writebuf
, offset
, len
, xfered_len
);
1707 const unsigned char *myaddr
= NULL
;
1709 fprintf_unfiltered (gdb_stdlog
,
1710 "%s:target_xfer_partial "
1711 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1714 (annex
? annex
: "(null)"),
1715 host_address_to_string (readbuf
),
1716 host_address_to_string (writebuf
),
1717 core_addr_to_string_nz (offset
),
1718 pulongest (len
), retval
,
1719 pulongest (*xfered_len
));
1725 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1729 fputs_unfiltered (", bytes =", gdb_stdlog
);
1730 for (i
= 0; i
< *xfered_len
; i
++)
1732 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1734 if (targetdebug
< 2 && i
> 0)
1736 fprintf_unfiltered (gdb_stdlog
, " ...");
1739 fprintf_unfiltered (gdb_stdlog
, "\n");
1742 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1746 fputc_unfiltered ('\n', gdb_stdlog
);
1749 /* Check implementations of to_xfer_partial update *XFERED_LEN
1750 properly. Do assertion after printing debug messages, so that we
1751 can find more clues on assertion failure from debugging messages. */
1752 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1753 gdb_assert (*xfered_len
> 0);
1758 /* Read LEN bytes of target memory at address MEMADDR, placing the
1759 results in GDB's memory at MYADDR. Returns either 0 for success or
1760 TARGET_XFER_E_IO if any error occurs.
1762 If an error occurs, no guarantee is made about the contents of the data at
1763 MYADDR. In particular, the caller should not depend upon partial reads
1764 filling the buffer with good data. There is no way for the caller to know
1765 how much good data might have been transfered anyway. Callers that can
1766 deal with partial reads should call target_read (which will retry until
1767 it makes no progress, and then return how much was transferred). */
1770 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1772 /* Dispatch to the topmost target, not the flattened current_target.
1773 Memory accesses check target->to_has_(all_)memory, and the
1774 flattened target doesn't inherit those. */
1775 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1776 myaddr
, memaddr
, len
) == len
)
1779 return TARGET_XFER_E_IO
;
1782 /* Like target_read_memory, but specify explicitly that this is a read
1783 from the target's raw memory. That is, this read bypasses the
1784 dcache, breakpoint shadowing, etc. */
1787 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1789 /* See comment in target_read_memory about why the request starts at
1790 current_target.beneath. */
1791 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1792 myaddr
, memaddr
, len
) == len
)
1795 return TARGET_XFER_E_IO
;
1798 /* Like target_read_memory, but specify explicitly that this is a read from
1799 the target's stack. This may trigger different cache behavior. */
1802 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1804 /* See comment in target_read_memory about why the request starts at
1805 current_target.beneath. */
1806 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1807 myaddr
, memaddr
, len
) == len
)
1810 return TARGET_XFER_E_IO
;
1813 /* Like target_read_memory, but specify explicitly that this is a read from
1814 the target's code. This may trigger different cache behavior. */
1817 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1819 /* See comment in target_read_memory about why the request starts at
1820 current_target.beneath. */
1821 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1822 myaddr
, memaddr
, len
) == len
)
1825 return TARGET_XFER_E_IO
;
1828 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1829 Returns either 0 for success or TARGET_XFER_E_IO if any
1830 error occurs. If an error occurs, no guarantee is made about how
1831 much data got written. Callers that can deal with partial writes
1832 should call target_write. */
1835 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1837 /* See comment in target_read_memory about why the request starts at
1838 current_target.beneath. */
1839 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1840 myaddr
, memaddr
, len
) == len
)
1843 return TARGET_XFER_E_IO
;
1846 /* Write LEN bytes from MYADDR to target raw memory at address
1847 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1848 if any error occurs. If an error occurs, no guarantee is made
1849 about how much data got written. Callers that can deal with
1850 partial writes should call target_write. */
1853 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1855 /* See comment in target_read_memory about why the request starts at
1856 current_target.beneath. */
1857 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1858 myaddr
, memaddr
, len
) == len
)
1861 return TARGET_XFER_E_IO
;
1864 /* Fetch the target's memory map. */
1867 target_memory_map (void)
1869 VEC(mem_region_s
) *result
;
1870 struct mem_region
*last_one
, *this_one
;
1872 struct target_ops
*t
;
1875 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1877 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1878 if (t
->to_memory_map
!= NULL
)
1884 result
= t
->to_memory_map (t
);
1888 qsort (VEC_address (mem_region_s
, result
),
1889 VEC_length (mem_region_s
, result
),
1890 sizeof (struct mem_region
), mem_region_cmp
);
1892 /* Check that regions do not overlap. Simultaneously assign
1893 a numbering for the "mem" commands to use to refer to
1896 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1898 this_one
->number
= ix
;
1900 if (last_one
&& last_one
->hi
> this_one
->lo
)
1902 warning (_("Overlapping regions in memory map: ignoring"));
1903 VEC_free (mem_region_s
, result
);
1906 last_one
= this_one
;
1913 target_flash_erase (ULONGEST address
, LONGEST length
)
1915 struct target_ops
*t
;
1917 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1918 if (t
->to_flash_erase
!= NULL
)
1921 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1922 hex_string (address
), phex (length
, 0));
1923 t
->to_flash_erase (t
, address
, length
);
1931 target_flash_done (void)
1933 struct target_ops
*t
;
1935 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1936 if (t
->to_flash_done
!= NULL
)
1939 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1940 t
->to_flash_done (t
);
1948 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1949 struct cmd_list_element
*c
, const char *value
)
1951 fprintf_filtered (file
,
1952 _("Mode for reading from readonly sections is %s.\n"),
1956 /* More generic transfers. */
1958 static enum target_xfer_status
1959 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1960 const char *annex
, gdb_byte
*readbuf
,
1961 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1962 ULONGEST
*xfered_len
)
1964 if (object
== TARGET_OBJECT_MEMORY
1965 && ops
->deprecated_xfer_memory
!= NULL
)
1966 /* If available, fall back to the target's
1967 "deprecated_xfer_memory" method. */
1972 if (writebuf
!= NULL
)
1974 void *buffer
= xmalloc (len
);
1975 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1977 memcpy (buffer
, writebuf
, len
);
1978 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1979 1/*write*/, NULL
, ops
);
1980 do_cleanups (cleanup
);
1982 if (readbuf
!= NULL
)
1983 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1984 0/*read*/, NULL
, ops
);
1987 *xfered_len
= (ULONGEST
) xfered
;
1988 return TARGET_XFER_E_IO
;
1990 else if (xfered
== 0 && errno
== 0)
1991 /* "deprecated_xfer_memory" uses 0, cross checked against
1992 ERRNO as one indication of an error. */
1993 return TARGET_XFER_EOF
;
1995 return TARGET_XFER_E_IO
;
1999 gdb_assert (ops
->beneath
!= NULL
);
2000 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
2001 readbuf
, writebuf
, offset
, len
,
2006 /* Target vector read/write partial wrapper functions. */
2008 static enum target_xfer_status
2009 target_read_partial (struct target_ops
*ops
,
2010 enum target_object object
,
2011 const char *annex
, gdb_byte
*buf
,
2012 ULONGEST offset
, ULONGEST len
,
2013 ULONGEST
*xfered_len
)
2015 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
2019 static enum target_xfer_status
2020 target_write_partial (struct target_ops
*ops
,
2021 enum target_object object
,
2022 const char *annex
, const gdb_byte
*buf
,
2023 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
2025 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
2029 /* Wrappers to perform the full transfer. */
2031 /* For docs on target_read see target.h. */
2034 target_read (struct target_ops
*ops
,
2035 enum target_object object
,
2036 const char *annex
, gdb_byte
*buf
,
2037 ULONGEST offset
, LONGEST len
)
2041 while (xfered
< len
)
2043 ULONGEST xfered_len
;
2044 enum target_xfer_status status
;
2046 status
= target_read_partial (ops
, object
, annex
,
2047 (gdb_byte
*) buf
+ xfered
,
2048 offset
+ xfered
, len
- xfered
,
2051 /* Call an observer, notifying them of the xfer progress? */
2052 if (status
== TARGET_XFER_EOF
)
2054 else if (status
== TARGET_XFER_OK
)
2056 xfered
+= xfered_len
;
2066 /* Assuming that the entire [begin, end) range of memory cannot be
2067 read, try to read whatever subrange is possible to read.
2069 The function returns, in RESULT, either zero or one memory block.
2070 If there's a readable subrange at the beginning, it is completely
2071 read and returned. Any further readable subrange will not be read.
2072 Otherwise, if there's a readable subrange at the end, it will be
2073 completely read and returned. Any readable subranges before it
2074 (obviously, not starting at the beginning), will be ignored. In
2075 other cases -- either no readable subrange, or readable subrange(s)
2076 that is neither at the beginning, or end, nothing is returned.
2078 The purpose of this function is to handle a read across a boundary
2079 of accessible memory in a case when memory map is not available.
2080 The above restrictions are fine for this case, but will give
2081 incorrect results if the memory is 'patchy'. However, supporting
2082 'patchy' memory would require trying to read every single byte,
2083 and it seems unacceptable solution. Explicit memory map is
2084 recommended for this case -- and target_read_memory_robust will
2085 take care of reading multiple ranges then. */
2088 read_whatever_is_readable (struct target_ops
*ops
,
2089 ULONGEST begin
, ULONGEST end
,
2090 VEC(memory_read_result_s
) **result
)
2092 gdb_byte
*buf
= xmalloc (end
- begin
);
2093 ULONGEST current_begin
= begin
;
2094 ULONGEST current_end
= end
;
2096 memory_read_result_s r
;
2097 ULONGEST xfered_len
;
2099 /* If we previously failed to read 1 byte, nothing can be done here. */
2100 if (end
- begin
<= 1)
2106 /* Check that either first or the last byte is readable, and give up
2107 if not. This heuristic is meant to permit reading accessible memory
2108 at the boundary of accessible region. */
2109 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2110 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
2115 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2116 buf
+ (end
-begin
) - 1, end
- 1, 1,
2117 &xfered_len
) == TARGET_XFER_OK
)
2128 /* Loop invariant is that the [current_begin, current_end) was previously
2129 found to be not readable as a whole.
2131 Note loop condition -- if the range has 1 byte, we can't divide the range
2132 so there's no point trying further. */
2133 while (current_end
- current_begin
> 1)
2135 ULONGEST first_half_begin
, first_half_end
;
2136 ULONGEST second_half_begin
, second_half_end
;
2138 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2142 first_half_begin
= current_begin
;
2143 first_half_end
= middle
;
2144 second_half_begin
= middle
;
2145 second_half_end
= current_end
;
2149 first_half_begin
= middle
;
2150 first_half_end
= current_end
;
2151 second_half_begin
= current_begin
;
2152 second_half_end
= middle
;
2155 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2156 buf
+ (first_half_begin
- begin
),
2158 first_half_end
- first_half_begin
);
2160 if (xfer
== first_half_end
- first_half_begin
)
2162 /* This half reads up fine. So, the error must be in the
2164 current_begin
= second_half_begin
;
2165 current_end
= second_half_end
;
2169 /* This half is not readable. Because we've tried one byte, we
2170 know some part of this half if actually redable. Go to the next
2171 iteration to divide again and try to read.
2173 We don't handle the other half, because this function only tries
2174 to read a single readable subrange. */
2175 current_begin
= first_half_begin
;
2176 current_end
= first_half_end
;
2182 /* The [begin, current_begin) range has been read. */
2184 r
.end
= current_begin
;
2189 /* The [current_end, end) range has been read. */
2190 LONGEST rlen
= end
- current_end
;
2192 r
.data
= xmalloc (rlen
);
2193 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2194 r
.begin
= current_end
;
2198 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2202 free_memory_read_result_vector (void *x
)
2204 VEC(memory_read_result_s
) *v
= x
;
2205 memory_read_result_s
*current
;
2208 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2210 xfree (current
->data
);
2212 VEC_free (memory_read_result_s
, v
);
2215 VEC(memory_read_result_s
) *
2216 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2218 VEC(memory_read_result_s
) *result
= 0;
2221 while (xfered
< len
)
2223 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2226 /* If there is no explicit region, a fake one should be created. */
2227 gdb_assert (region
);
2229 if (region
->hi
== 0)
2230 rlen
= len
- xfered
;
2232 rlen
= region
->hi
- offset
;
2234 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2236 /* Cannot read this region. Note that we can end up here only
2237 if the region is explicitly marked inaccessible, or
2238 'inaccessible-by-default' is in effect. */
2243 LONGEST to_read
= min (len
- xfered
, rlen
);
2244 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2246 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2247 (gdb_byte
*) buffer
,
2248 offset
+ xfered
, to_read
);
2249 /* Call an observer, notifying them of the xfer progress? */
2252 /* Got an error reading full chunk. See if maybe we can read
2255 read_whatever_is_readable (ops
, offset
+ xfered
,
2256 offset
+ xfered
+ to_read
, &result
);
2261 struct memory_read_result r
;
2263 r
.begin
= offset
+ xfered
;
2264 r
.end
= r
.begin
+ xfer
;
2265 VEC_safe_push (memory_read_result_s
, result
, &r
);
2275 /* An alternative to target_write with progress callbacks. */
2278 target_write_with_progress (struct target_ops
*ops
,
2279 enum target_object object
,
2280 const char *annex
, const gdb_byte
*buf
,
2281 ULONGEST offset
, LONGEST len
,
2282 void (*progress
) (ULONGEST
, void *), void *baton
)
2286 /* Give the progress callback a chance to set up. */
2288 (*progress
) (0, baton
);
2290 while (xfered
< len
)
2292 ULONGEST xfered_len
;
2293 enum target_xfer_status status
;
2295 status
= target_write_partial (ops
, object
, annex
,
2296 (gdb_byte
*) buf
+ xfered
,
2297 offset
+ xfered
, len
- xfered
,
2300 if (status
== TARGET_XFER_EOF
)
2302 if (TARGET_XFER_STATUS_ERROR_P (status
))
2305 gdb_assert (status
== TARGET_XFER_OK
);
2307 (*progress
) (xfered_len
, baton
);
2309 xfered
+= xfered_len
;
2315 /* For docs on target_write see target.h. */
2318 target_write (struct target_ops
*ops
,
2319 enum target_object object
,
2320 const char *annex
, const gdb_byte
*buf
,
2321 ULONGEST offset
, LONGEST len
)
2323 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2327 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2328 the size of the transferred data. PADDING additional bytes are
2329 available in *BUF_P. This is a helper function for
2330 target_read_alloc; see the declaration of that function for more
2334 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2335 const char *annex
, gdb_byte
**buf_p
, int padding
)
2337 size_t buf_alloc
, buf_pos
;
2340 /* This function does not have a length parameter; it reads the
2341 entire OBJECT). Also, it doesn't support objects fetched partly
2342 from one target and partly from another (in a different stratum,
2343 e.g. a core file and an executable). Both reasons make it
2344 unsuitable for reading memory. */
2345 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2347 /* Start by reading up to 4K at a time. The target will throttle
2348 this number down if necessary. */
2350 buf
= xmalloc (buf_alloc
);
2354 ULONGEST xfered_len
;
2355 enum target_xfer_status status
;
2357 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2358 buf_pos
, buf_alloc
- buf_pos
- padding
,
2361 if (status
== TARGET_XFER_EOF
)
2363 /* Read all there was. */
2370 else if (status
!= TARGET_XFER_OK
)
2372 /* An error occurred. */
2374 return TARGET_XFER_E_IO
;
2377 buf_pos
+= xfered_len
;
2379 /* If the buffer is filling up, expand it. */
2380 if (buf_alloc
< buf_pos
* 2)
2383 buf
= xrealloc (buf
, buf_alloc
);
2390 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2391 the size of the transferred data. See the declaration in "target.h"
2392 function for more information about the return value. */
2395 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2396 const char *annex
, gdb_byte
**buf_p
)
2398 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2401 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2402 returned as a string, allocated using xmalloc. If an error occurs
2403 or the transfer is unsupported, NULL is returned. Empty objects
2404 are returned as allocated but empty strings. A warning is issued
2405 if the result contains any embedded NUL bytes. */
2408 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2413 LONGEST i
, transferred
;
2415 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2416 bufstr
= (char *) buffer
;
2418 if (transferred
< 0)
2421 if (transferred
== 0)
2422 return xstrdup ("");
2424 bufstr
[transferred
] = 0;
2426 /* Check for embedded NUL bytes; but allow trailing NULs. */
2427 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2430 warning (_("target object %d, annex %s, "
2431 "contained unexpected null characters"),
2432 (int) object
, annex
? annex
: "(none)");
2439 /* Memory transfer methods. */
2442 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2445 /* This method is used to read from an alternate, non-current
2446 target. This read must bypass the overlay support (as symbols
2447 don't match this target), and GDB's internal cache (wrong cache
2448 for this target). */
2449 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2451 memory_error (TARGET_XFER_E_IO
, addr
);
2455 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2456 int len
, enum bfd_endian byte_order
)
2458 gdb_byte buf
[sizeof (ULONGEST
)];
2460 gdb_assert (len
<= sizeof (buf
));
2461 get_target_memory (ops
, addr
, buf
, len
);
2462 return extract_unsigned_integer (buf
, len
, byte_order
);
2468 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2469 struct bp_target_info
*bp_tgt
)
2471 if (!may_insert_breakpoints
)
2473 warning (_("May not insert breakpoints"));
2477 return current_target
.to_insert_breakpoint (¤t_target
,
2484 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2485 struct bp_target_info
*bp_tgt
)
2487 /* This is kind of a weird case to handle, but the permission might
2488 have been changed after breakpoints were inserted - in which case
2489 we should just take the user literally and assume that any
2490 breakpoints should be left in place. */
2491 if (!may_insert_breakpoints
)
2493 warning (_("May not remove breakpoints"));
2497 return current_target
.to_remove_breakpoint (¤t_target
,
2502 target_info (char *args
, int from_tty
)
2504 struct target_ops
*t
;
2505 int has_all_mem
= 0;
2507 if (symfile_objfile
!= NULL
)
2508 printf_unfiltered (_("Symbols from \"%s\".\n"),
2509 objfile_name (symfile_objfile
));
2511 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2513 if (!(*t
->to_has_memory
) (t
))
2516 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2519 printf_unfiltered (_("\tWhile running this, "
2520 "GDB does not access memory from...\n"));
2521 printf_unfiltered ("%s:\n", t
->to_longname
);
2522 (t
->to_files_info
) (t
);
2523 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2527 /* This function is called before any new inferior is created, e.g.
2528 by running a program, attaching, or connecting to a target.
2529 It cleans up any state from previous invocations which might
2530 change between runs. This is a subset of what target_preopen
2531 resets (things which might change between targets). */
2534 target_pre_inferior (int from_tty
)
2536 /* Clear out solib state. Otherwise the solib state of the previous
2537 inferior might have survived and is entirely wrong for the new
2538 target. This has been observed on GNU/Linux using glibc 2.3. How
2550 Cannot access memory at address 0xdeadbeef
2553 /* In some OSs, the shared library list is the same/global/shared
2554 across inferiors. If code is shared between processes, so are
2555 memory regions and features. */
2556 if (!gdbarch_has_global_solist (target_gdbarch ()))
2558 no_shared_libraries (NULL
, from_tty
);
2560 invalidate_target_mem_regions ();
2562 target_clear_description ();
2565 agent_capability_invalidate ();
2568 /* Callback for iterate_over_inferiors. Gets rid of the given
2572 dispose_inferior (struct inferior
*inf
, void *args
)
2574 struct thread_info
*thread
;
2576 thread
= any_thread_of_process (inf
->pid
);
2579 switch_to_thread (thread
->ptid
);
2581 /* Core inferiors actually should be detached, not killed. */
2582 if (target_has_execution
)
2585 target_detach (NULL
, 0);
2591 /* This is to be called by the open routine before it does
2595 target_preopen (int from_tty
)
2599 if (have_inferiors ())
2602 || !have_live_inferiors ()
2603 || query (_("A program is being debugged already. Kill it? ")))
2604 iterate_over_inferiors (dispose_inferior
, NULL
);
2606 error (_("Program not killed."));
2609 /* Calling target_kill may remove the target from the stack. But if
2610 it doesn't (which seems like a win for UDI), remove it now. */
2611 /* Leave the exec target, though. The user may be switching from a
2612 live process to a core of the same program. */
2613 pop_all_targets_above (file_stratum
);
2615 target_pre_inferior (from_tty
);
2618 /* Detach a target after doing deferred register stores. */
2621 target_detach (const char *args
, int from_tty
)
2623 struct target_ops
* t
;
2625 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2626 /* Don't remove global breakpoints here. They're removed on
2627 disconnection from the target. */
2630 /* If we're in breakpoints-always-inserted mode, have to remove
2631 them before detaching. */
2632 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2634 prepare_for_detach ();
2636 current_target
.to_detach (¤t_target
, args
, from_tty
);
2638 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2643 target_disconnect (char *args
, int from_tty
)
2645 struct target_ops
*t
;
2647 /* If we're in breakpoints-always-inserted mode or if breakpoints
2648 are global across processes, we have to remove them before
2650 remove_breakpoints ();
2652 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2653 if (t
->to_disconnect
!= NULL
)
2656 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2658 t
->to_disconnect (t
, args
, from_tty
);
2666 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2668 struct target_ops
*t
;
2669 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2674 char *status_string
;
2675 char *options_string
;
2677 status_string
= target_waitstatus_to_string (status
);
2678 options_string
= target_options_to_string (options
);
2679 fprintf_unfiltered (gdb_stdlog
,
2680 "target_wait (%d, status, options={%s})"
2682 ptid_get_pid (ptid
), options_string
,
2683 ptid_get_pid (retval
), status_string
);
2684 xfree (status_string
);
2685 xfree (options_string
);
2692 target_pid_to_str (ptid_t ptid
)
2694 struct target_ops
*t
;
2696 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2698 if (t
->to_pid_to_str
!= NULL
)
2699 return (*t
->to_pid_to_str
) (t
, ptid
);
2702 return normal_pid_to_str (ptid
);
2706 target_thread_name (struct thread_info
*info
)
2708 struct target_ops
*t
;
2710 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2712 if (t
->to_thread_name
!= NULL
)
2713 return (*t
->to_thread_name
) (t
, info
);
2720 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2722 struct target_ops
*t
;
2724 target_dcache_invalidate ();
2726 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2728 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2729 ptid_get_pid (ptid
),
2730 step
? "step" : "continue",
2731 gdb_signal_to_name (signal
));
2733 registers_changed_ptid (ptid
);
2734 set_executing (ptid
, 1);
2735 set_running (ptid
, 1);
2736 clear_inline_frame_state (ptid
);
2740 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2742 struct target_ops
*t
;
2744 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2746 if (t
->to_pass_signals
!= NULL
)
2752 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2755 for (i
= 0; i
< numsigs
; i
++)
2756 if (pass_signals
[i
])
2757 fprintf_unfiltered (gdb_stdlog
, " %s",
2758 gdb_signal_to_name (i
));
2760 fprintf_unfiltered (gdb_stdlog
, " })\n");
2763 (*t
->to_pass_signals
) (t
, numsigs
, pass_signals
);
2770 target_program_signals (int numsigs
, unsigned char *program_signals
)
2772 struct target_ops
*t
;
2774 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2776 if (t
->to_program_signals
!= NULL
)
2782 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2785 for (i
= 0; i
< numsigs
; i
++)
2786 if (program_signals
[i
])
2787 fprintf_unfiltered (gdb_stdlog
, " %s",
2788 gdb_signal_to_name (i
));
2790 fprintf_unfiltered (gdb_stdlog
, " })\n");
2793 (*t
->to_program_signals
) (t
, numsigs
, program_signals
);
2799 /* Look through the list of possible targets for a target that can
2803 target_follow_fork (int follow_child
, int detach_fork
)
2805 struct target_ops
*t
;
2807 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2809 if (t
->to_follow_fork
!= NULL
)
2811 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2814 fprintf_unfiltered (gdb_stdlog
,
2815 "target_follow_fork (%d, %d) = %d\n",
2816 follow_child
, detach_fork
, retval
);
2821 /* Some target returned a fork event, but did not know how to follow it. */
2822 internal_error (__FILE__
, __LINE__
,
2823 _("could not find a target to follow fork"));
2827 target_mourn_inferior (void)
2829 struct target_ops
*t
;
2831 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2833 if (t
->to_mourn_inferior
!= NULL
)
2835 t
->to_mourn_inferior (t
);
2837 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2839 /* We no longer need to keep handles on any of the object files.
2840 Make sure to release them to avoid unnecessarily locking any
2841 of them while we're not actually debugging. */
2842 bfd_cache_close_all ();
2848 internal_error (__FILE__
, __LINE__
,
2849 _("could not find a target to follow mourn inferior"));
2852 /* Look for a target which can describe architectural features, starting
2853 from TARGET. If we find one, return its description. */
2855 const struct target_desc
*
2856 target_read_description (struct target_ops
*target
)
2858 struct target_ops
*t
;
2860 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2861 if (t
->to_read_description
!= NULL
)
2863 const struct target_desc
*tdesc
;
2865 tdesc
= t
->to_read_description (t
);
2873 /* The default implementation of to_search_memory.
2874 This implements a basic search of memory, reading target memory and
2875 performing the search here (as opposed to performing the search in on the
2876 target side with, for example, gdbserver). */
2879 simple_search_memory (struct target_ops
*ops
,
2880 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2881 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2882 CORE_ADDR
*found_addrp
)
2884 /* NOTE: also defined in find.c testcase. */
2885 #define SEARCH_CHUNK_SIZE 16000
2886 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2887 /* Buffer to hold memory contents for searching. */
2888 gdb_byte
*search_buf
;
2889 unsigned search_buf_size
;
2890 struct cleanup
*old_cleanups
;
2892 search_buf_size
= chunk_size
+ pattern_len
- 1;
2894 /* No point in trying to allocate a buffer larger than the search space. */
2895 if (search_space_len
< search_buf_size
)
2896 search_buf_size
= search_space_len
;
2898 search_buf
= malloc (search_buf_size
);
2899 if (search_buf
== NULL
)
2900 error (_("Unable to allocate memory to perform the search."));
2901 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2903 /* Prime the search buffer. */
2905 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2906 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2908 warning (_("Unable to access %s bytes of target "
2909 "memory at %s, halting search."),
2910 pulongest (search_buf_size
), hex_string (start_addr
));
2911 do_cleanups (old_cleanups
);
2915 /* Perform the search.
2917 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2918 When we've scanned N bytes we copy the trailing bytes to the start and
2919 read in another N bytes. */
2921 while (search_space_len
>= pattern_len
)
2923 gdb_byte
*found_ptr
;
2924 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2926 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2927 pattern
, pattern_len
);
2929 if (found_ptr
!= NULL
)
2931 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2933 *found_addrp
= found_addr
;
2934 do_cleanups (old_cleanups
);
2938 /* Not found in this chunk, skip to next chunk. */
2940 /* Don't let search_space_len wrap here, it's unsigned. */
2941 if (search_space_len
>= chunk_size
)
2942 search_space_len
-= chunk_size
;
2944 search_space_len
= 0;
2946 if (search_space_len
>= pattern_len
)
2948 unsigned keep_len
= search_buf_size
- chunk_size
;
2949 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2952 /* Copy the trailing part of the previous iteration to the front
2953 of the buffer for the next iteration. */
2954 gdb_assert (keep_len
== pattern_len
- 1);
2955 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2957 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2959 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2960 search_buf
+ keep_len
, read_addr
,
2961 nr_to_read
) != nr_to_read
)
2963 warning (_("Unable to access %s bytes of target "
2964 "memory at %s, halting search."),
2965 plongest (nr_to_read
),
2966 hex_string (read_addr
));
2967 do_cleanups (old_cleanups
);
2971 start_addr
+= chunk_size
;
2977 do_cleanups (old_cleanups
);
2981 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2982 sequence of bytes in PATTERN with length PATTERN_LEN.
2984 The result is 1 if found, 0 if not found, and -1 if there was an error
2985 requiring halting of the search (e.g. memory read error).
2986 If the pattern is found the address is recorded in FOUND_ADDRP. */
2989 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2990 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2991 CORE_ADDR
*found_addrp
)
2993 struct target_ops
*t
;
2996 /* We don't use INHERIT to set current_target.to_search_memory,
2997 so we have to scan the target stack and handle targetdebug
3001 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
3002 hex_string (start_addr
));
3004 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3005 if (t
->to_search_memory
!= NULL
)
3010 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
3011 pattern
, pattern_len
, found_addrp
);
3015 /* If a special version of to_search_memory isn't available, use the
3017 found
= simple_search_memory (current_target
.beneath
,
3018 start_addr
, search_space_len
,
3019 pattern
, pattern_len
, found_addrp
);
3023 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
3028 /* Look through the currently pushed targets. If none of them will
3029 be able to restart the currently running process, issue an error
3033 target_require_runnable (void)
3035 struct target_ops
*t
;
3037 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3039 /* If this target knows how to create a new program, then
3040 assume we will still be able to after killing the current
3041 one. Either killing and mourning will not pop T, or else
3042 find_default_run_target will find it again. */
3043 if (t
->to_create_inferior
!= NULL
)
3046 /* Do not worry about thread_stratum targets that can not
3047 create inferiors. Assume they will be pushed again if
3048 necessary, and continue to the process_stratum. */
3049 if (t
->to_stratum
== thread_stratum
3050 || t
->to_stratum
== arch_stratum
)
3053 error (_("The \"%s\" target does not support \"run\". "
3054 "Try \"help target\" or \"continue\"."),
3058 /* This function is only called if the target is running. In that
3059 case there should have been a process_stratum target and it
3060 should either know how to create inferiors, or not... */
3061 internal_error (__FILE__
, __LINE__
, _("No targets found"));
3064 /* Look through the list of possible targets for a target that can
3065 execute a run or attach command without any other data. This is
3066 used to locate the default process stratum.
3068 If DO_MESG is not NULL, the result is always valid (error() is
3069 called for errors); else, return NULL on error. */
3071 static struct target_ops
*
3072 find_default_run_target (char *do_mesg
)
3074 struct target_ops
**t
;
3075 struct target_ops
*runable
= NULL
;
3080 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3083 if ((*t
)->to_can_run
&& target_can_run (*t
))
3093 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3102 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3104 struct target_ops
*t
;
3106 t
= find_default_run_target ("attach");
3107 (t
->to_attach
) (t
, args
, from_tty
);
3112 find_default_create_inferior (struct target_ops
*ops
,
3113 char *exec_file
, char *allargs
, char **env
,
3116 struct target_ops
*t
;
3118 t
= find_default_run_target ("run");
3119 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3124 find_default_can_async_p (struct target_ops
*ignore
)
3126 struct target_ops
*t
;
3128 /* This may be called before the target is pushed on the stack;
3129 look for the default process stratum. If there's none, gdb isn't
3130 configured with a native debugger, and target remote isn't
3132 t
= find_default_run_target (NULL
);
3133 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
3134 return (t
->to_can_async_p
) (t
);
3139 find_default_is_async_p (struct target_ops
*ignore
)
3141 struct target_ops
*t
;
3143 /* This may be called before the target is pushed on the stack;
3144 look for the default process stratum. If there's none, gdb isn't
3145 configured with a native debugger, and target remote isn't
3147 t
= find_default_run_target (NULL
);
3148 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
3149 return (t
->to_is_async_p
) (t
);
3154 find_default_supports_non_stop (struct target_ops
*self
)
3156 struct target_ops
*t
;
3158 t
= find_default_run_target (NULL
);
3159 if (t
&& t
->to_supports_non_stop
)
3160 return (t
->to_supports_non_stop
) (t
);
3165 target_supports_non_stop (void)
3167 struct target_ops
*t
;
3169 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3170 if (t
->to_supports_non_stop
)
3171 return t
->to_supports_non_stop (t
);
3176 /* Implement the "info proc" command. */
3179 target_info_proc (char *args
, enum info_proc_what what
)
3181 struct target_ops
*t
;
3183 /* If we're already connected to something that can get us OS
3184 related data, use it. Otherwise, try using the native
3186 if (current_target
.to_stratum
>= process_stratum
)
3187 t
= current_target
.beneath
;
3189 t
= find_default_run_target (NULL
);
3191 for (; t
!= NULL
; t
= t
->beneath
)
3193 if (t
->to_info_proc
!= NULL
)
3195 t
->to_info_proc (t
, args
, what
);
3198 fprintf_unfiltered (gdb_stdlog
,
3199 "target_info_proc (\"%s\", %d)\n", args
, what
);
3209 find_default_supports_disable_randomization (struct target_ops
*self
)
3211 struct target_ops
*t
;
3213 t
= find_default_run_target (NULL
);
3214 if (t
&& t
->to_supports_disable_randomization
)
3215 return (t
->to_supports_disable_randomization
) (t
);
3220 target_supports_disable_randomization (void)
3222 struct target_ops
*t
;
3224 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3225 if (t
->to_supports_disable_randomization
)
3226 return t
->to_supports_disable_randomization (t
);
3232 target_get_osdata (const char *type
)
3234 struct target_ops
*t
;
3236 /* If we're already connected to something that can get us OS
3237 related data, use it. Otherwise, try using the native
3239 if (current_target
.to_stratum
>= process_stratum
)
3240 t
= current_target
.beneath
;
3242 t
= find_default_run_target ("get OS data");
3247 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3250 /* Determine the current address space of thread PTID. */
3252 struct address_space
*
3253 target_thread_address_space (ptid_t ptid
)
3255 struct address_space
*aspace
;
3256 struct inferior
*inf
;
3257 struct target_ops
*t
;
3259 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3261 if (t
->to_thread_address_space
!= NULL
)
3263 aspace
= t
->to_thread_address_space (t
, ptid
);
3264 gdb_assert (aspace
);
3267 fprintf_unfiltered (gdb_stdlog
,
3268 "target_thread_address_space (%s) = %d\n",
3269 target_pid_to_str (ptid
),
3270 address_space_num (aspace
));
3275 /* Fall-back to the "main" address space of the inferior. */
3276 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3278 if (inf
== NULL
|| inf
->aspace
== NULL
)
3279 internal_error (__FILE__
, __LINE__
,
3280 _("Can't determine the current "
3281 "address space of thread %s\n"),
3282 target_pid_to_str (ptid
));
3288 /* Target file operations. */
3290 static struct target_ops
*
3291 default_fileio_target (void)
3293 /* If we're already connected to something that can perform
3294 file I/O, use it. Otherwise, try using the native target. */
3295 if (current_target
.to_stratum
>= process_stratum
)
3296 return current_target
.beneath
;
3298 return find_default_run_target ("file I/O");
3301 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3302 target file descriptor, or -1 if an error occurs (and set
3305 target_fileio_open (const char *filename
, int flags
, int mode
,
3308 struct target_ops
*t
;
3310 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3312 if (t
->to_fileio_open
!= NULL
)
3314 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3317 fprintf_unfiltered (gdb_stdlog
,
3318 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3319 filename
, flags
, mode
,
3320 fd
, fd
!= -1 ? 0 : *target_errno
);
3325 *target_errno
= FILEIO_ENOSYS
;
3329 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3330 Return the number of bytes written, or -1 if an error occurs
3331 (and set *TARGET_ERRNO). */
3333 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3334 ULONGEST offset
, int *target_errno
)
3336 struct target_ops
*t
;
3338 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3340 if (t
->to_fileio_pwrite
!= NULL
)
3342 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3346 fprintf_unfiltered (gdb_stdlog
,
3347 "target_fileio_pwrite (%d,...,%d,%s) "
3349 fd
, len
, pulongest (offset
),
3350 ret
, ret
!= -1 ? 0 : *target_errno
);
3355 *target_errno
= FILEIO_ENOSYS
;
3359 /* Read up to LEN bytes FD on the target into READ_BUF.
3360 Return the number of bytes read, or -1 if an error occurs
3361 (and set *TARGET_ERRNO). */
3363 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3364 ULONGEST offset
, int *target_errno
)
3366 struct target_ops
*t
;
3368 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3370 if (t
->to_fileio_pread
!= NULL
)
3372 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3376 fprintf_unfiltered (gdb_stdlog
,
3377 "target_fileio_pread (%d,...,%d,%s) "
3379 fd
, len
, pulongest (offset
),
3380 ret
, ret
!= -1 ? 0 : *target_errno
);
3385 *target_errno
= FILEIO_ENOSYS
;
3389 /* Close FD on the target. Return 0, or -1 if an error occurs
3390 (and set *TARGET_ERRNO). */
3392 target_fileio_close (int fd
, int *target_errno
)
3394 struct target_ops
*t
;
3396 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3398 if (t
->to_fileio_close
!= NULL
)
3400 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3403 fprintf_unfiltered (gdb_stdlog
,
3404 "target_fileio_close (%d) = %d (%d)\n",
3405 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3410 *target_errno
= FILEIO_ENOSYS
;
3414 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3415 occurs (and set *TARGET_ERRNO). */
3417 target_fileio_unlink (const char *filename
, int *target_errno
)
3419 struct target_ops
*t
;
3421 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3423 if (t
->to_fileio_unlink
!= NULL
)
3425 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3428 fprintf_unfiltered (gdb_stdlog
,
3429 "target_fileio_unlink (%s) = %d (%d)\n",
3430 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3435 *target_errno
= FILEIO_ENOSYS
;
3439 /* Read value of symbolic link FILENAME on the target. Return a
3440 null-terminated string allocated via xmalloc, or NULL if an error
3441 occurs (and set *TARGET_ERRNO). */
3443 target_fileio_readlink (const char *filename
, int *target_errno
)
3445 struct target_ops
*t
;
3447 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3449 if (t
->to_fileio_readlink
!= NULL
)
3451 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3454 fprintf_unfiltered (gdb_stdlog
,
3455 "target_fileio_readlink (%s) = %s (%d)\n",
3456 filename
, ret
? ret
: "(nil)",
3457 ret
? 0 : *target_errno
);
3462 *target_errno
= FILEIO_ENOSYS
;
3467 target_fileio_close_cleanup (void *opaque
)
3469 int fd
= *(int *) opaque
;
3472 target_fileio_close (fd
, &target_errno
);
3475 /* Read target file FILENAME. Store the result in *BUF_P and
3476 return the size of the transferred data. PADDING additional bytes are
3477 available in *BUF_P. This is a helper function for
3478 target_fileio_read_alloc; see the declaration of that function for more
3482 target_fileio_read_alloc_1 (const char *filename
,
3483 gdb_byte
**buf_p
, int padding
)
3485 struct cleanup
*close_cleanup
;
3486 size_t buf_alloc
, buf_pos
;
3492 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3496 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3498 /* Start by reading up to 4K at a time. The target will throttle
3499 this number down if necessary. */
3501 buf
= xmalloc (buf_alloc
);
3505 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3506 buf_alloc
- buf_pos
- padding
, buf_pos
,
3510 /* An error occurred. */
3511 do_cleanups (close_cleanup
);
3517 /* Read all there was. */
3518 do_cleanups (close_cleanup
);
3528 /* If the buffer is filling up, expand it. */
3529 if (buf_alloc
< buf_pos
* 2)
3532 buf
= xrealloc (buf
, buf_alloc
);
3539 /* Read target file FILENAME. Store the result in *BUF_P and return
3540 the size of the transferred data. See the declaration in "target.h"
3541 function for more information about the return value. */
3544 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3546 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3549 /* Read target file FILENAME. The result is NUL-terminated and
3550 returned as a string, allocated using xmalloc. If an error occurs
3551 or the transfer is unsupported, NULL is returned. Empty objects
3552 are returned as allocated but empty strings. A warning is issued
3553 if the result contains any embedded NUL bytes. */
3556 target_fileio_read_stralloc (const char *filename
)
3560 LONGEST i
, transferred
;
3562 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3563 bufstr
= (char *) buffer
;
3565 if (transferred
< 0)
3568 if (transferred
== 0)
3569 return xstrdup ("");
3571 bufstr
[transferred
] = 0;
3573 /* Check for embedded NUL bytes; but allow trailing NULs. */
3574 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3577 warning (_("target file %s "
3578 "contained unexpected null characters"),
3588 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3589 CORE_ADDR addr
, int len
)
3591 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3595 default_watchpoint_addr_within_range (struct target_ops
*target
,
3597 CORE_ADDR start
, int length
)
3599 return addr
>= start
&& addr
< start
+ length
;
3602 static struct gdbarch
*
3603 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3605 return target_gdbarch ();
3621 return_minus_one (void)
3633 * Find the next target down the stack from the specified target.
3637 find_target_beneath (struct target_ops
*t
)
3645 find_target_at (enum strata stratum
)
3647 struct target_ops
*t
;
3649 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3650 if (t
->to_stratum
== stratum
)
3657 /* The inferior process has died. Long live the inferior! */
3660 generic_mourn_inferior (void)
3664 ptid
= inferior_ptid
;
3665 inferior_ptid
= null_ptid
;
3667 /* Mark breakpoints uninserted in case something tries to delete a
3668 breakpoint while we delete the inferior's threads (which would
3669 fail, since the inferior is long gone). */
3670 mark_breakpoints_out ();
3672 if (!ptid_equal (ptid
, null_ptid
))
3674 int pid
= ptid_get_pid (ptid
);
3675 exit_inferior (pid
);
3678 /* Note this wipes step-resume breakpoints, so needs to be done
3679 after exit_inferior, which ends up referencing the step-resume
3680 breakpoints through clear_thread_inferior_resources. */
3681 breakpoint_init_inferior (inf_exited
);
3683 registers_changed ();
3685 reopen_exec_file ();
3686 reinit_frame_cache ();
3688 if (deprecated_detach_hook
)
3689 deprecated_detach_hook ();
3692 /* Convert a normal process ID to a string. Returns the string in a
3696 normal_pid_to_str (ptid_t ptid
)
3698 static char buf
[32];
3700 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3705 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3707 return normal_pid_to_str (ptid
);
3710 /* Error-catcher for target_find_memory_regions. */
3712 dummy_find_memory_regions (struct target_ops
*self
,
3713 find_memory_region_ftype ignore1
, void *ignore2
)
3715 error (_("Command not implemented for this target."));
3719 /* Error-catcher for target_make_corefile_notes. */
3721 dummy_make_corefile_notes (struct target_ops
*self
,
3722 bfd
*ignore1
, int *ignore2
)
3724 error (_("Command not implemented for this target."));
3728 /* Error-catcher for target_get_bookmark. */
3730 dummy_get_bookmark (struct target_ops
*self
, char *ignore1
, int ignore2
)
3736 /* Error-catcher for target_goto_bookmark. */
3738 dummy_goto_bookmark (struct target_ops
*self
, gdb_byte
*ignore
, int from_tty
)
3743 /* Set up the handful of non-empty slots needed by the dummy target
3747 init_dummy_target (void)
3749 dummy_target
.to_shortname
= "None";
3750 dummy_target
.to_longname
= "None";
3751 dummy_target
.to_doc
= "";
3752 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3753 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3754 dummy_target
.to_supports_disable_randomization
3755 = find_default_supports_disable_randomization
;
3756 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3757 dummy_target
.to_stratum
= dummy_stratum
;
3758 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
3759 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
3760 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
3761 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
3762 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3763 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3764 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3765 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3766 dummy_target
.to_has_execution
3767 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3768 dummy_target
.to_magic
= OPS_MAGIC
;
3770 install_dummy_methods (&dummy_target
);
3774 debug_to_open (char *args
, int from_tty
)
3776 debug_target
.to_open (args
, from_tty
);
3778 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3782 target_close (struct target_ops
*targ
)
3784 gdb_assert (!target_is_pushed (targ
));
3786 if (targ
->to_xclose
!= NULL
)
3787 targ
->to_xclose (targ
);
3788 else if (targ
->to_close
!= NULL
)
3789 targ
->to_close (targ
);
3792 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3796 target_attach (char *args
, int from_tty
)
3798 current_target
.to_attach (¤t_target
, args
, from_tty
);
3800 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3805 target_thread_alive (ptid_t ptid
)
3807 struct target_ops
*t
;
3809 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3811 if (t
->to_thread_alive
!= NULL
)
3815 retval
= t
->to_thread_alive (t
, ptid
);
3817 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3818 ptid_get_pid (ptid
), retval
);
3828 target_find_new_threads (void)
3830 struct target_ops
*t
;
3832 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3834 if (t
->to_find_new_threads
!= NULL
)
3836 t
->to_find_new_threads (t
);
3838 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3846 target_stop (ptid_t ptid
)
3850 warning (_("May not interrupt or stop the target, ignoring attempt"));
3854 (*current_target
.to_stop
) (¤t_target
, ptid
);
3858 debug_to_post_attach (struct target_ops
*self
, int pid
)
3860 debug_target
.to_post_attach (&debug_target
, pid
);
3862 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3865 /* Concatenate ELEM to LIST, a comma separate list, and return the
3866 result. The LIST incoming argument is released. */
3869 str_comma_list_concat_elem (char *list
, const char *elem
)
3872 return xstrdup (elem
);
3874 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3877 /* Helper for target_options_to_string. If OPT is present in
3878 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3879 Returns the new resulting string. OPT is removed from
3883 do_option (int *target_options
, char *ret
,
3884 int opt
, char *opt_str
)
3886 if ((*target_options
& opt
) != 0)
3888 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3889 *target_options
&= ~opt
;
3896 target_options_to_string (int target_options
)
3900 #define DO_TARG_OPTION(OPT) \
3901 ret = do_option (&target_options, ret, OPT, #OPT)
3903 DO_TARG_OPTION (TARGET_WNOHANG
);
3905 if (target_options
!= 0)
3906 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3914 debug_print_register (const char * func
,
3915 struct regcache
*regcache
, int regno
)
3917 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3919 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3920 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3921 && gdbarch_register_name (gdbarch
, regno
) != NULL
3922 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3923 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3924 gdbarch_register_name (gdbarch
, regno
));
3926 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3927 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3929 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3930 int i
, size
= register_size (gdbarch
, regno
);
3931 gdb_byte buf
[MAX_REGISTER_SIZE
];
3933 regcache_raw_collect (regcache
, regno
, buf
);
3934 fprintf_unfiltered (gdb_stdlog
, " = ");
3935 for (i
= 0; i
< size
; i
++)
3937 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3939 if (size
<= sizeof (LONGEST
))
3941 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3943 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3944 core_addr_to_string_nz (val
), plongest (val
));
3947 fprintf_unfiltered (gdb_stdlog
, "\n");
3951 target_fetch_registers (struct regcache
*regcache
, int regno
)
3953 struct target_ops
*t
;
3955 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3957 if (t
->to_fetch_registers
!= NULL
)
3959 t
->to_fetch_registers (t
, regcache
, regno
);
3961 debug_print_register ("target_fetch_registers", regcache
, regno
);
3968 target_store_registers (struct regcache
*regcache
, int regno
)
3970 struct target_ops
*t
;
3972 if (!may_write_registers
)
3973 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3975 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3978 debug_print_register ("target_store_registers", regcache
, regno
);
3983 target_core_of_thread (ptid_t ptid
)
3985 struct target_ops
*t
;
3987 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3989 if (t
->to_core_of_thread
!= NULL
)
3991 int retval
= t
->to_core_of_thread (t
, ptid
);
3994 fprintf_unfiltered (gdb_stdlog
,
3995 "target_core_of_thread (%d) = %d\n",
3996 ptid_get_pid (ptid
), retval
);
4005 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
4007 struct target_ops
*t
;
4009 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4011 if (t
->to_verify_memory
!= NULL
)
4013 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
4016 fprintf_unfiltered (gdb_stdlog
,
4017 "target_verify_memory (%s, %s) = %d\n",
4018 paddress (target_gdbarch (), memaddr
),
4028 /* The documentation for this function is in its prototype declaration in
4032 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4034 struct target_ops
*t
;
4036 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4037 if (t
->to_insert_mask_watchpoint
!= NULL
)
4041 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
4044 fprintf_unfiltered (gdb_stdlog
, "\
4045 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
4046 core_addr_to_string (addr
),
4047 core_addr_to_string (mask
), rw
, ret
);
4055 /* The documentation for this function is in its prototype declaration in
4059 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4061 struct target_ops
*t
;
4063 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4064 if (t
->to_remove_mask_watchpoint
!= NULL
)
4068 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
4071 fprintf_unfiltered (gdb_stdlog
, "\
4072 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
4073 core_addr_to_string (addr
),
4074 core_addr_to_string (mask
), rw
, ret
);
4082 /* The documentation for this function is in its prototype declaration
4086 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4088 struct target_ops
*t
;
4090 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4091 if (t
->to_masked_watch_num_registers
!= NULL
)
4092 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4097 /* The documentation for this function is in its prototype declaration
4101 target_ranged_break_num_registers (void)
4103 struct target_ops
*t
;
4105 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4106 if (t
->to_ranged_break_num_registers
!= NULL
)
4107 return t
->to_ranged_break_num_registers (t
);
4114 struct btrace_target_info
*
4115 target_enable_btrace (ptid_t ptid
)
4117 struct target_ops
*t
;
4119 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4120 if (t
->to_enable_btrace
!= NULL
)
4121 return t
->to_enable_btrace (t
, ptid
);
4130 target_disable_btrace (struct btrace_target_info
*btinfo
)
4132 struct target_ops
*t
;
4134 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4135 if (t
->to_disable_btrace
!= NULL
)
4137 t
->to_disable_btrace (t
, btinfo
);
4147 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4149 struct target_ops
*t
;
4151 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4152 if (t
->to_teardown_btrace
!= NULL
)
4154 t
->to_teardown_btrace (t
, btinfo
);
4164 target_read_btrace (VEC (btrace_block_s
) **btrace
,
4165 struct btrace_target_info
*btinfo
,
4166 enum btrace_read_type type
)
4168 struct target_ops
*t
;
4170 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4171 if (t
->to_read_btrace
!= NULL
)
4172 return t
->to_read_btrace (t
, btrace
, btinfo
, type
);
4175 return BTRACE_ERR_NOT_SUPPORTED
;
4181 target_stop_recording (void)
4183 struct target_ops
*t
;
4185 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4186 if (t
->to_stop_recording
!= NULL
)
4188 t
->to_stop_recording (t
);
4192 /* This is optional. */
4198 target_info_record (void)
4200 struct target_ops
*t
;
4202 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4203 if (t
->to_info_record
!= NULL
)
4205 t
->to_info_record (t
);
4215 target_save_record (const char *filename
)
4217 struct target_ops
*t
;
4219 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4220 if (t
->to_save_record
!= NULL
)
4222 t
->to_save_record (t
, filename
);
4232 target_supports_delete_record (void)
4234 struct target_ops
*t
;
4236 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4237 if (t
->to_delete_record
!= NULL
)
4246 target_delete_record (void)
4248 struct target_ops
*t
;
4250 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4251 if (t
->to_delete_record
!= NULL
)
4253 t
->to_delete_record (t
);
4263 target_record_is_replaying (void)
4265 struct target_ops
*t
;
4267 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4268 if (t
->to_record_is_replaying
!= NULL
)
4269 return t
->to_record_is_replaying (t
);
4277 target_goto_record_begin (void)
4279 struct target_ops
*t
;
4281 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4282 if (t
->to_goto_record_begin
!= NULL
)
4284 t
->to_goto_record_begin (t
);
4294 target_goto_record_end (void)
4296 struct target_ops
*t
;
4298 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4299 if (t
->to_goto_record_end
!= NULL
)
4301 t
->to_goto_record_end (t
);
4311 target_goto_record (ULONGEST insn
)
4313 struct target_ops
*t
;
4315 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4316 if (t
->to_goto_record
!= NULL
)
4318 t
->to_goto_record (t
, insn
);
4328 target_insn_history (int size
, int flags
)
4330 struct target_ops
*t
;
4332 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4333 if (t
->to_insn_history
!= NULL
)
4335 t
->to_insn_history (t
, size
, flags
);
4345 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4347 struct target_ops
*t
;
4349 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4350 if (t
->to_insn_history_from
!= NULL
)
4352 t
->to_insn_history_from (t
, from
, size
, flags
);
4362 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4364 struct target_ops
*t
;
4366 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4367 if (t
->to_insn_history_range
!= NULL
)
4369 t
->to_insn_history_range (t
, begin
, end
, flags
);
4379 target_call_history (int size
, int flags
)
4381 struct target_ops
*t
;
4383 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4384 if (t
->to_call_history
!= NULL
)
4386 t
->to_call_history (t
, size
, flags
);
4396 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4398 struct target_ops
*t
;
4400 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4401 if (t
->to_call_history_from
!= NULL
)
4403 t
->to_call_history_from (t
, begin
, size
, flags
);
4413 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4415 struct target_ops
*t
;
4417 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4418 if (t
->to_call_history_range
!= NULL
)
4420 t
->to_call_history_range (t
, begin
, end
, flags
);
4428 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
4430 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
4432 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4437 const struct frame_unwind
*
4438 target_get_unwinder (void)
4440 struct target_ops
*t
;
4442 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4443 if (t
->to_get_unwinder
!= NULL
)
4444 return t
->to_get_unwinder
;
4451 const struct frame_unwind
*
4452 target_get_tailcall_unwinder (void)
4454 struct target_ops
*t
;
4456 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4457 if (t
->to_get_tailcall_unwinder
!= NULL
)
4458 return t
->to_get_tailcall_unwinder
;
4466 forward_target_decr_pc_after_break (struct target_ops
*ops
,
4467 struct gdbarch
*gdbarch
)
4469 for (; ops
!= NULL
; ops
= ops
->beneath
)
4470 if (ops
->to_decr_pc_after_break
!= NULL
)
4471 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
4473 return gdbarch_decr_pc_after_break (gdbarch
);
4479 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
4481 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
4485 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4486 int write
, struct mem_attrib
*attrib
,
4487 struct target_ops
*target
)
4491 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4494 fprintf_unfiltered (gdb_stdlog
,
4495 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4496 paddress (target_gdbarch (), memaddr
), len
,
4497 write
? "write" : "read", retval
);
4503 fputs_unfiltered (", bytes =", gdb_stdlog
);
4504 for (i
= 0; i
< retval
; i
++)
4506 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4508 if (targetdebug
< 2 && i
> 0)
4510 fprintf_unfiltered (gdb_stdlog
, " ...");
4513 fprintf_unfiltered (gdb_stdlog
, "\n");
4516 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4520 fputc_unfiltered ('\n', gdb_stdlog
);
4526 debug_to_files_info (struct target_ops
*target
)
4528 debug_target
.to_files_info (target
);
4530 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4534 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4535 struct bp_target_info
*bp_tgt
)
4539 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4541 fprintf_unfiltered (gdb_stdlog
,
4542 "target_insert_breakpoint (%s, xxx) = %ld\n",
4543 core_addr_to_string (bp_tgt
->placed_address
),
4544 (unsigned long) retval
);
4549 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4550 struct bp_target_info
*bp_tgt
)
4554 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4556 fprintf_unfiltered (gdb_stdlog
,
4557 "target_remove_breakpoint (%s, xxx) = %ld\n",
4558 core_addr_to_string (bp_tgt
->placed_address
),
4559 (unsigned long) retval
);
4564 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4565 int type
, int cnt
, int from_tty
)
4569 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4570 type
, cnt
, from_tty
);
4572 fprintf_unfiltered (gdb_stdlog
,
4573 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4574 (unsigned long) type
,
4575 (unsigned long) cnt
,
4576 (unsigned long) from_tty
,
4577 (unsigned long) retval
);
4582 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4583 CORE_ADDR addr
, int len
)
4587 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4590 fprintf_unfiltered (gdb_stdlog
,
4591 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4592 core_addr_to_string (addr
), (unsigned long) len
,
4593 core_addr_to_string (retval
));
4598 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4599 CORE_ADDR addr
, int len
, int rw
,
4600 struct expression
*cond
)
4604 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4608 fprintf_unfiltered (gdb_stdlog
,
4609 "target_can_accel_watchpoint_condition "
4610 "(%s, %d, %d, %s) = %ld\n",
4611 core_addr_to_string (addr
), len
, rw
,
4612 host_address_to_string (cond
), (unsigned long) retval
);
4617 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4621 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4623 fprintf_unfiltered (gdb_stdlog
,
4624 "target_stopped_by_watchpoint () = %ld\n",
4625 (unsigned long) retval
);
4630 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4634 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4636 fprintf_unfiltered (gdb_stdlog
,
4637 "target_stopped_data_address ([%s]) = %ld\n",
4638 core_addr_to_string (*addr
),
4639 (unsigned long)retval
);
4644 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4646 CORE_ADDR start
, int length
)
4650 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4653 fprintf_filtered (gdb_stdlog
,
4654 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4655 core_addr_to_string (addr
), core_addr_to_string (start
),
4661 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4662 struct gdbarch
*gdbarch
,
4663 struct bp_target_info
*bp_tgt
)
4667 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4670 fprintf_unfiltered (gdb_stdlog
,
4671 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4672 core_addr_to_string (bp_tgt
->placed_address
),
4673 (unsigned long) retval
);
4678 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4679 struct gdbarch
*gdbarch
,
4680 struct bp_target_info
*bp_tgt
)
4684 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4687 fprintf_unfiltered (gdb_stdlog
,
4688 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4689 core_addr_to_string (bp_tgt
->placed_address
),
4690 (unsigned long) retval
);
4695 debug_to_insert_watchpoint (struct target_ops
*self
,
4696 CORE_ADDR addr
, int len
, int type
,
4697 struct expression
*cond
)
4701 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4702 addr
, len
, type
, cond
);
4704 fprintf_unfiltered (gdb_stdlog
,
4705 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4706 core_addr_to_string (addr
), len
, type
,
4707 host_address_to_string (cond
), (unsigned long) retval
);
4712 debug_to_remove_watchpoint (struct target_ops
*self
,
4713 CORE_ADDR addr
, int len
, int type
,
4714 struct expression
*cond
)
4718 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4719 addr
, len
, type
, cond
);
4721 fprintf_unfiltered (gdb_stdlog
,
4722 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4723 core_addr_to_string (addr
), len
, type
,
4724 host_address_to_string (cond
), (unsigned long) retval
);
4729 debug_to_terminal_init (struct target_ops
*self
)
4731 debug_target
.to_terminal_init (&debug_target
);
4733 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4737 debug_to_terminal_inferior (struct target_ops
*self
)
4739 debug_target
.to_terminal_inferior (&debug_target
);
4741 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4745 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4747 debug_target
.to_terminal_ours_for_output (&debug_target
);
4749 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4753 debug_to_terminal_ours (struct target_ops
*self
)
4755 debug_target
.to_terminal_ours (&debug_target
);
4757 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4761 debug_to_terminal_save_ours (struct target_ops
*self
)
4763 debug_target
.to_terminal_save_ours (&debug_target
);
4765 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4769 debug_to_terminal_info (struct target_ops
*self
,
4770 const char *arg
, int from_tty
)
4772 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4774 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4779 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4781 debug_target
.to_load (&debug_target
, args
, from_tty
);
4783 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4787 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4789 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4791 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4792 ptid_get_pid (ptid
));
4796 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4800 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4802 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4809 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4813 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4815 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4822 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4826 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4828 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4835 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4839 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4841 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4848 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4852 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4854 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4861 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4865 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4867 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4874 debug_to_has_exited (struct target_ops
*self
,
4875 int pid
, int wait_status
, int *exit_status
)
4879 has_exited
= debug_target
.to_has_exited (&debug_target
,
4880 pid
, wait_status
, exit_status
);
4882 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4883 pid
, wait_status
, *exit_status
, has_exited
);
4889 debug_to_can_run (struct target_ops
*self
)
4893 retval
= debug_target
.to_can_run (&debug_target
);
4895 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4900 static struct gdbarch
*
4901 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4903 struct gdbarch
*retval
;
4905 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4907 fprintf_unfiltered (gdb_stdlog
,
4908 "target_thread_architecture (%s) = %s [%s]\n",
4909 target_pid_to_str (ptid
),
4910 host_address_to_string (retval
),
4911 gdbarch_bfd_arch_info (retval
)->printable_name
);
4916 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4918 debug_target
.to_stop (&debug_target
, ptid
);
4920 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4921 target_pid_to_str (ptid
));
4925 debug_to_rcmd (struct target_ops
*self
, char *command
,
4926 struct ui_file
*outbuf
)
4928 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4929 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4933 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4937 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4939 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4946 setup_target_debug (void)
4948 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4950 current_target
.to_open
= debug_to_open
;
4951 current_target
.to_post_attach
= debug_to_post_attach
;
4952 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4953 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4954 current_target
.to_files_info
= debug_to_files_info
;
4955 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4956 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4957 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4958 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4959 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4960 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4961 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4962 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4963 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4964 current_target
.to_watchpoint_addr_within_range
4965 = debug_to_watchpoint_addr_within_range
;
4966 current_target
.to_region_ok_for_hw_watchpoint
4967 = debug_to_region_ok_for_hw_watchpoint
;
4968 current_target
.to_can_accel_watchpoint_condition
4969 = debug_to_can_accel_watchpoint_condition
;
4970 current_target
.to_terminal_init
= debug_to_terminal_init
;
4971 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4972 current_target
.to_terminal_ours_for_output
4973 = debug_to_terminal_ours_for_output
;
4974 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4975 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4976 current_target
.to_terminal_info
= debug_to_terminal_info
;
4977 current_target
.to_load
= debug_to_load
;
4978 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4979 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4980 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4981 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4982 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4983 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4984 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4985 current_target
.to_has_exited
= debug_to_has_exited
;
4986 current_target
.to_can_run
= debug_to_can_run
;
4987 current_target
.to_stop
= debug_to_stop
;
4988 current_target
.to_rcmd
= debug_to_rcmd
;
4989 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4990 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4994 static char targ_desc
[] =
4995 "Names of targets and files being debugged.\nShows the entire \
4996 stack of targets currently in use (including the exec-file,\n\
4997 core-file, and process, if any), as well as the symbol file name.";
5000 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
5002 error (_("\"monitor\" command not supported by this target."));
5006 do_monitor_command (char *cmd
,
5009 target_rcmd (cmd
, gdb_stdtarg
);
5012 /* Print the name of each layers of our target stack. */
5015 maintenance_print_target_stack (char *cmd
, int from_tty
)
5017 struct target_ops
*t
;
5019 printf_filtered (_("The current target stack is:\n"));
5021 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
5023 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
5027 /* Controls if async mode is permitted. */
5028 int target_async_permitted
= 0;
5030 /* The set command writes to this variable. If the inferior is
5031 executing, target_async_permitted is *not* updated. */
5032 static int target_async_permitted_1
= 0;
5035 set_target_async_command (char *args
, int from_tty
,
5036 struct cmd_list_element
*c
)
5038 if (have_live_inferiors ())
5040 target_async_permitted_1
= target_async_permitted
;
5041 error (_("Cannot change this setting while the inferior is running."));
5044 target_async_permitted
= target_async_permitted_1
;
5048 show_target_async_command (struct ui_file
*file
, int from_tty
,
5049 struct cmd_list_element
*c
,
5052 fprintf_filtered (file
,
5053 _("Controlling the inferior in "
5054 "asynchronous mode is %s.\n"), value
);
5057 /* Temporary copies of permission settings. */
5059 static int may_write_registers_1
= 1;
5060 static int may_write_memory_1
= 1;
5061 static int may_insert_breakpoints_1
= 1;
5062 static int may_insert_tracepoints_1
= 1;
5063 static int may_insert_fast_tracepoints_1
= 1;
5064 static int may_stop_1
= 1;
5066 /* Make the user-set values match the real values again. */
5069 update_target_permissions (void)
5071 may_write_registers_1
= may_write_registers
;
5072 may_write_memory_1
= may_write_memory
;
5073 may_insert_breakpoints_1
= may_insert_breakpoints
;
5074 may_insert_tracepoints_1
= may_insert_tracepoints
;
5075 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
5076 may_stop_1
= may_stop
;
5079 /* The one function handles (most of) the permission flags in the same
5083 set_target_permissions (char *args
, int from_tty
,
5084 struct cmd_list_element
*c
)
5086 if (target_has_execution
)
5088 update_target_permissions ();
5089 error (_("Cannot change this setting while the inferior is running."));
5092 /* Make the real values match the user-changed values. */
5093 may_write_registers
= may_write_registers_1
;
5094 may_insert_breakpoints
= may_insert_breakpoints_1
;
5095 may_insert_tracepoints
= may_insert_tracepoints_1
;
5096 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
5097 may_stop
= may_stop_1
;
5098 update_observer_mode ();
5101 /* Set memory write permission independently of observer mode. */
5104 set_write_memory_permission (char *args
, int from_tty
,
5105 struct cmd_list_element
*c
)
5107 /* Make the real values match the user-changed values. */
5108 may_write_memory
= may_write_memory_1
;
5109 update_observer_mode ();
5114 initialize_targets (void)
5116 init_dummy_target ();
5117 push_target (&dummy_target
);
5119 add_info ("target", target_info
, targ_desc
);
5120 add_info ("files", target_info
, targ_desc
);
5122 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
5123 Set target debugging."), _("\
5124 Show target debugging."), _("\
5125 When non-zero, target debugging is enabled. Higher numbers are more\n\
5126 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
5130 &setdebuglist
, &showdebuglist
);
5132 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
5133 &trust_readonly
, _("\
5134 Set mode for reading from readonly sections."), _("\
5135 Show mode for reading from readonly sections."), _("\
5136 When this mode is on, memory reads from readonly sections (such as .text)\n\
5137 will be read from the object file instead of from the target. This will\n\
5138 result in significant performance improvement for remote targets."),
5140 show_trust_readonly
,
5141 &setlist
, &showlist
);
5143 add_com ("monitor", class_obscure
, do_monitor_command
,
5144 _("Send a command to the remote monitor (remote targets only)."));
5146 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5147 _("Print the name of each layer of the internal target stack."),
5148 &maintenanceprintlist
);
5150 add_setshow_boolean_cmd ("target-async", no_class
,
5151 &target_async_permitted_1
, _("\
5152 Set whether gdb controls the inferior in asynchronous mode."), _("\
5153 Show whether gdb controls the inferior in asynchronous mode."), _("\
5154 Tells gdb whether to control the inferior in asynchronous mode."),
5155 set_target_async_command
,
5156 show_target_async_command
,
5160 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5161 &may_write_registers_1
, _("\
5162 Set permission to write into registers."), _("\
5163 Show permission to write into registers."), _("\
5164 When this permission is on, GDB may write into the target's registers.\n\
5165 Otherwise, any sort of write attempt will result in an error."),
5166 set_target_permissions
, NULL
,
5167 &setlist
, &showlist
);
5169 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5170 &may_write_memory_1
, _("\
5171 Set permission to write into target memory."), _("\
5172 Show permission to write into target memory."), _("\
5173 When this permission is on, GDB may write into the target's memory.\n\
5174 Otherwise, any sort of write attempt will result in an error."),
5175 set_write_memory_permission
, NULL
,
5176 &setlist
, &showlist
);
5178 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5179 &may_insert_breakpoints_1
, _("\
5180 Set permission to insert breakpoints in the target."), _("\
5181 Show permission to insert breakpoints in the target."), _("\
5182 When this permission is on, GDB may insert breakpoints in the program.\n\
5183 Otherwise, any sort of insertion attempt will result in an error."),
5184 set_target_permissions
, NULL
,
5185 &setlist
, &showlist
);
5187 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5188 &may_insert_tracepoints_1
, _("\
5189 Set permission to insert tracepoints in the target."), _("\
5190 Show permission to insert tracepoints in the target."), _("\
5191 When this permission is on, GDB may insert tracepoints in the program.\n\
5192 Otherwise, any sort of insertion attempt will result in an error."),
5193 set_target_permissions
, NULL
,
5194 &setlist
, &showlist
);
5196 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5197 &may_insert_fast_tracepoints_1
, _("\
5198 Set permission to insert fast tracepoints in the target."), _("\
5199 Show permission to insert fast tracepoints in the target."), _("\
5200 When this permission is on, GDB may insert fast tracepoints.\n\
5201 Otherwise, any sort of insertion attempt will result in an error."),
5202 set_target_permissions
, NULL
,
5203 &setlist
, &showlist
);
5205 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5207 Set permission to interrupt or signal the target."), _("\
5208 Show permission to interrupt or signal the target."), _("\
5209 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5210 Otherwise, any attempt to interrupt or stop will be ignored."),
5211 set_target_permissions
, NULL
,
5212 &setlist
, &showlist
);