1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2013 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/>. */
35 #include "gdb_assert.h"
37 #include "exceptions.h"
38 #include "target-descriptions.h"
39 #include "gdbthread.h"
42 #include "inline-frame.h"
43 #include "tracepoint.h"
44 #include "gdb/fileio.h"
47 static void target_info (char *, int);
49 static void default_terminal_info (const char *, int);
51 static int default_watchpoint_addr_within_range (struct target_ops
*,
52 CORE_ADDR
, CORE_ADDR
, int);
54 static int default_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
56 static void tcomplain (void) ATTRIBUTE_NORETURN
;
58 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
60 static int return_zero (void);
62 static int return_one (void);
64 static int return_minus_one (void);
66 void target_ignore (void);
68 static void target_command (char *, int);
70 static struct target_ops
*find_default_run_target (char *);
72 static LONGEST
default_xfer_partial (struct target_ops
*ops
,
73 enum target_object object
,
74 const char *annex
, gdb_byte
*readbuf
,
75 const gdb_byte
*writebuf
,
76 ULONGEST offset
, LONGEST len
);
78 static LONGEST
current_xfer_partial (struct target_ops
*ops
,
79 enum target_object object
,
80 const char *annex
, gdb_byte
*readbuf
,
81 const gdb_byte
*writebuf
,
82 ULONGEST offset
, LONGEST len
);
84 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
87 static void init_dummy_target (void);
89 static struct target_ops debug_target
;
91 static void debug_to_open (char *, int);
93 static void debug_to_prepare_to_store (struct regcache
*);
95 static void debug_to_files_info (struct target_ops
*);
97 static int debug_to_insert_breakpoint (struct gdbarch
*,
98 struct bp_target_info
*);
100 static int debug_to_remove_breakpoint (struct gdbarch
*,
101 struct bp_target_info
*);
103 static int debug_to_can_use_hw_breakpoint (int, int, int);
105 static int debug_to_insert_hw_breakpoint (struct gdbarch
*,
106 struct bp_target_info
*);
108 static int debug_to_remove_hw_breakpoint (struct gdbarch
*,
109 struct bp_target_info
*);
111 static int debug_to_insert_watchpoint (CORE_ADDR
, int, int,
112 struct expression
*);
114 static int debug_to_remove_watchpoint (CORE_ADDR
, int, int,
115 struct expression
*);
117 static int debug_to_stopped_by_watchpoint (void);
119 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
121 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
122 CORE_ADDR
, CORE_ADDR
, int);
124 static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
126 static int debug_to_can_accel_watchpoint_condition (CORE_ADDR
, int, int,
127 struct expression
*);
129 static void debug_to_terminal_init (void);
131 static void debug_to_terminal_inferior (void);
133 static void debug_to_terminal_ours_for_output (void);
135 static void debug_to_terminal_save_ours (void);
137 static void debug_to_terminal_ours (void);
139 static void debug_to_load (char *, int);
141 static int debug_to_can_run (void);
143 static void debug_to_stop (ptid_t
);
145 /* Pointer to array of target architecture structures; the size of the
146 array; the current index into the array; the allocated size of the
148 struct target_ops
**target_structs
;
149 unsigned target_struct_size
;
150 unsigned target_struct_allocsize
;
151 #define DEFAULT_ALLOCSIZE 10
153 /* The initial current target, so that there is always a semi-valid
156 static struct target_ops dummy_target
;
158 /* Top of target stack. */
160 static struct target_ops
*target_stack
;
162 /* The target structure we are currently using to talk to a process
163 or file or whatever "inferior" we have. */
165 struct target_ops current_target
;
167 /* Command list for target. */
169 static struct cmd_list_element
*targetlist
= NULL
;
171 /* Nonzero if we should trust readonly sections from the
172 executable when reading memory. */
174 static int trust_readonly
= 0;
176 /* Nonzero if we should show true memory content including
177 memory breakpoint inserted by gdb. */
179 static int show_memory_breakpoints
= 0;
181 /* These globals control whether GDB attempts to perform these
182 operations; they are useful for targets that need to prevent
183 inadvertant disruption, such as in non-stop mode. */
185 int may_write_registers
= 1;
187 int may_write_memory
= 1;
189 int may_insert_breakpoints
= 1;
191 int may_insert_tracepoints
= 1;
193 int may_insert_fast_tracepoints
= 1;
197 /* Non-zero if we want to see trace of target level stuff. */
199 static unsigned int targetdebug
= 0;
201 show_targetdebug (struct ui_file
*file
, int from_tty
,
202 struct cmd_list_element
*c
, const char *value
)
204 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
207 static void setup_target_debug (void);
209 /* The option sets this. */
210 static int stack_cache_enabled_p_1
= 1;
211 /* And set_stack_cache_enabled_p updates this.
212 The reason for the separation is so that we don't flush the cache for
213 on->on transitions. */
214 static int stack_cache_enabled_p
= 1;
216 /* This is called *after* the stack-cache has been set.
217 Flush the cache for off->on and on->off transitions.
218 There's no real need to flush the cache for on->off transitions,
219 except cleanliness. */
222 set_stack_cache_enabled_p (char *args
, int from_tty
,
223 struct cmd_list_element
*c
)
225 if (stack_cache_enabled_p
!= stack_cache_enabled_p_1
)
226 target_dcache_invalidate ();
228 stack_cache_enabled_p
= stack_cache_enabled_p_1
;
232 show_stack_cache_enabled_p (struct ui_file
*file
, int from_tty
,
233 struct cmd_list_element
*c
, const char *value
)
235 fprintf_filtered (file
, _("Cache use for stack accesses is %s.\n"), value
);
238 /* Cache of memory operations, to speed up remote access. */
239 static DCACHE
*target_dcache
;
241 /* Target dcache is initialized or not. */
244 target_dcache_init_p (void)
246 return (target_dcache
!= NULL
);
249 /* Invalidate the target dcache. */
252 target_dcache_invalidate (void)
254 if (target_dcache_init_p ())
255 dcache_invalidate (target_dcache
);
258 /* Return the target dcache. Return NULL if target dcache is not
262 target_dcache_get (void)
264 return target_dcache
;
267 /* Return the target dcache. If it is not initialized yet, initialize
271 target_dcache_get_or_init (void)
273 if (!target_dcache_init_p ())
274 target_dcache
= dcache_init ();
276 return target_dcache
;
279 /* The user just typed 'target' without the name of a target. */
282 target_command (char *arg
, int from_tty
)
284 fputs_filtered ("Argument required (target name). Try `help target'\n",
288 /* Default target_has_* methods for process_stratum targets. */
291 default_child_has_all_memory (struct target_ops
*ops
)
293 /* If no inferior selected, then we can't read memory here. */
294 if (ptid_equal (inferior_ptid
, null_ptid
))
301 default_child_has_memory (struct target_ops
*ops
)
303 /* If no inferior selected, then we can't read memory here. */
304 if (ptid_equal (inferior_ptid
, null_ptid
))
311 default_child_has_stack (struct target_ops
*ops
)
313 /* If no inferior selected, there's no stack. */
314 if (ptid_equal (inferior_ptid
, null_ptid
))
321 default_child_has_registers (struct target_ops
*ops
)
323 /* Can't read registers from no inferior. */
324 if (ptid_equal (inferior_ptid
, null_ptid
))
331 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
333 /* If there's no thread selected, then we can't make it run through
335 if (ptid_equal (the_ptid
, null_ptid
))
343 target_has_all_memory_1 (void)
345 struct target_ops
*t
;
347 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
348 if (t
->to_has_all_memory (t
))
355 target_has_memory_1 (void)
357 struct target_ops
*t
;
359 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
360 if (t
->to_has_memory (t
))
367 target_has_stack_1 (void)
369 struct target_ops
*t
;
371 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
372 if (t
->to_has_stack (t
))
379 target_has_registers_1 (void)
381 struct target_ops
*t
;
383 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
384 if (t
->to_has_registers (t
))
391 target_has_execution_1 (ptid_t the_ptid
)
393 struct target_ops
*t
;
395 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
396 if (t
->to_has_execution (t
, the_ptid
))
403 target_has_execution_current (void)
405 return target_has_execution_1 (inferior_ptid
);
408 /* Complete initialization of T. This ensures that various fields in
409 T are set, if needed by the target implementation. */
412 complete_target_initialization (struct target_ops
*t
)
414 /* Provide default values for all "must have" methods. */
415 if (t
->to_xfer_partial
== NULL
)
416 t
->to_xfer_partial
= default_xfer_partial
;
418 if (t
->to_has_all_memory
== NULL
)
419 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
421 if (t
->to_has_memory
== NULL
)
422 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
424 if (t
->to_has_stack
== NULL
)
425 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
427 if (t
->to_has_registers
== NULL
)
428 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
430 if (t
->to_has_execution
== NULL
)
431 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
434 /* Add possible target architecture T to the list and add a new
435 command 'target T->to_shortname'. Set COMPLETER as the command's
436 completer if not NULL. */
439 add_target_with_completer (struct target_ops
*t
,
440 completer_ftype
*completer
)
442 struct cmd_list_element
*c
;
444 complete_target_initialization (t
);
448 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
449 target_structs
= (struct target_ops
**) xmalloc
450 (target_struct_allocsize
* sizeof (*target_structs
));
452 if (target_struct_size
>= target_struct_allocsize
)
454 target_struct_allocsize
*= 2;
455 target_structs
= (struct target_ops
**)
456 xrealloc ((char *) target_structs
,
457 target_struct_allocsize
* sizeof (*target_structs
));
459 target_structs
[target_struct_size
++] = t
;
461 if (targetlist
== NULL
)
462 add_prefix_cmd ("target", class_run
, target_command
, _("\
463 Connect to a target machine or process.\n\
464 The first argument is the type or protocol of the target machine.\n\
465 Remaining arguments are interpreted by the target protocol. For more\n\
466 information on the arguments for a particular protocol, type\n\
467 `help target ' followed by the protocol name."),
468 &targetlist
, "target ", 0, &cmdlist
);
469 c
= add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
,
471 if (completer
!= NULL
)
472 set_cmd_completer (c
, completer
);
475 /* Add a possible target architecture to the list. */
478 add_target (struct target_ops
*t
)
480 add_target_with_completer (t
, NULL
);
486 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
488 struct cmd_list_element
*c
;
491 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
493 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
494 alt
= xstrprintf ("target %s", t
->to_shortname
);
495 deprecate_cmd (c
, alt
);
508 struct target_ops
*t
;
510 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
511 if (t
->to_kill
!= NULL
)
514 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
524 target_load (char *arg
, int from_tty
)
526 target_dcache_invalidate ();
527 (*current_target
.to_load
) (arg
, from_tty
);
531 target_create_inferior (char *exec_file
, char *args
,
532 char **env
, int from_tty
)
534 struct target_ops
*t
;
536 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
538 if (t
->to_create_inferior
!= NULL
)
540 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
542 fprintf_unfiltered (gdb_stdlog
,
543 "target_create_inferior (%s, %s, xxx, %d)\n",
544 exec_file
, args
, from_tty
);
549 internal_error (__FILE__
, __LINE__
,
550 _("could not find a target to create inferior"));
554 target_terminal_inferior (void)
556 /* A background resume (``run&'') should leave GDB in control of the
557 terminal. Use target_can_async_p, not target_is_async_p, since at
558 this point the target is not async yet. However, if sync_execution
559 is not set, we know it will become async prior to resume. */
560 if (target_can_async_p () && !sync_execution
)
563 /* If GDB is resuming the inferior in the foreground, install
564 inferior's terminal modes. */
565 (*current_target
.to_terminal_inferior
) ();
569 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
570 struct target_ops
*t
)
572 errno
= EIO
; /* Can't read/write this location. */
573 return 0; /* No bytes handled. */
579 error (_("You can't do that when your target is `%s'"),
580 current_target
.to_shortname
);
586 error (_("You can't do that without a process to debug."));
590 default_terminal_info (const char *args
, int from_tty
)
592 printf_unfiltered (_("No saved terminal information.\n"));
595 /* A default implementation for the to_get_ada_task_ptid target method.
597 This function builds the PTID by using both LWP and TID as part of
598 the PTID lwp and tid elements. The pid used is the pid of the
602 default_get_ada_task_ptid (long lwp
, long tid
)
604 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
607 static enum exec_direction_kind
608 default_execution_direction (void)
610 if (!target_can_execute_reverse
)
612 else if (!target_can_async_p ())
615 gdb_assert_not_reached ("\
616 to_execution_direction must be implemented for reverse async");
619 /* Go through the target stack from top to bottom, copying over zero
620 entries in current_target, then filling in still empty entries. In
621 effect, we are doing class inheritance through the pushed target
624 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
625 is currently implemented, is that it discards any knowledge of
626 which target an inherited method originally belonged to.
627 Consequently, new new target methods should instead explicitly and
628 locally search the target stack for the target that can handle the
632 update_current_target (void)
634 struct target_ops
*t
;
636 /* First, reset current's contents. */
637 memset (¤t_target
, 0, sizeof (current_target
));
639 #define INHERIT(FIELD, TARGET) \
640 if (!current_target.FIELD) \
641 current_target.FIELD = (TARGET)->FIELD
643 for (t
= target_stack
; t
; t
= t
->beneath
)
645 INHERIT (to_shortname
, t
);
646 INHERIT (to_longname
, t
);
648 /* Do not inherit to_open. */
649 /* Do not inherit to_close. */
650 /* Do not inherit to_attach. */
651 INHERIT (to_post_attach
, t
);
652 INHERIT (to_attach_no_wait
, t
);
653 /* Do not inherit to_detach. */
654 /* Do not inherit to_disconnect. */
655 /* Do not inherit to_resume. */
656 /* Do not inherit to_wait. */
657 /* Do not inherit to_fetch_registers. */
658 /* Do not inherit to_store_registers. */
659 INHERIT (to_prepare_to_store
, t
);
660 INHERIT (deprecated_xfer_memory
, t
);
661 INHERIT (to_files_info
, t
);
662 INHERIT (to_insert_breakpoint
, t
);
663 INHERIT (to_remove_breakpoint
, t
);
664 INHERIT (to_can_use_hw_breakpoint
, t
);
665 INHERIT (to_insert_hw_breakpoint
, t
);
666 INHERIT (to_remove_hw_breakpoint
, t
);
667 /* Do not inherit to_ranged_break_num_registers. */
668 INHERIT (to_insert_watchpoint
, t
);
669 INHERIT (to_remove_watchpoint
, t
);
670 /* Do not inherit to_insert_mask_watchpoint. */
671 /* Do not inherit to_remove_mask_watchpoint. */
672 INHERIT (to_stopped_data_address
, t
);
673 INHERIT (to_have_steppable_watchpoint
, t
);
674 INHERIT (to_have_continuable_watchpoint
, t
);
675 INHERIT (to_stopped_by_watchpoint
, t
);
676 INHERIT (to_watchpoint_addr_within_range
, t
);
677 INHERIT (to_region_ok_for_hw_watchpoint
, t
);
678 INHERIT (to_can_accel_watchpoint_condition
, t
);
679 /* Do not inherit to_masked_watch_num_registers. */
680 INHERIT (to_terminal_init
, t
);
681 INHERIT (to_terminal_inferior
, t
);
682 INHERIT (to_terminal_ours_for_output
, t
);
683 INHERIT (to_terminal_ours
, t
);
684 INHERIT (to_terminal_save_ours
, t
);
685 INHERIT (to_terminal_info
, t
);
686 /* Do not inherit to_kill. */
687 INHERIT (to_load
, t
);
688 /* Do no inherit to_create_inferior. */
689 INHERIT (to_post_startup_inferior
, t
);
690 INHERIT (to_insert_fork_catchpoint
, t
);
691 INHERIT (to_remove_fork_catchpoint
, t
);
692 INHERIT (to_insert_vfork_catchpoint
, t
);
693 INHERIT (to_remove_vfork_catchpoint
, t
);
694 /* Do not inherit to_follow_fork. */
695 INHERIT (to_insert_exec_catchpoint
, t
);
696 INHERIT (to_remove_exec_catchpoint
, t
);
697 INHERIT (to_set_syscall_catchpoint
, t
);
698 INHERIT (to_has_exited
, t
);
699 /* Do not inherit to_mourn_inferior. */
700 INHERIT (to_can_run
, t
);
701 /* Do not inherit to_pass_signals. */
702 /* Do not inherit to_program_signals. */
703 /* Do not inherit to_thread_alive. */
704 /* Do not inherit to_find_new_threads. */
705 /* Do not inherit to_pid_to_str. */
706 INHERIT (to_extra_thread_info
, t
);
707 INHERIT (to_thread_name
, t
);
708 INHERIT (to_stop
, t
);
709 /* Do not inherit to_xfer_partial. */
710 INHERIT (to_rcmd
, t
);
711 INHERIT (to_pid_to_exec_file
, t
);
712 INHERIT (to_log_command
, t
);
713 INHERIT (to_stratum
, t
);
714 /* Do not inherit to_has_all_memory. */
715 /* Do not inherit to_has_memory. */
716 /* Do not inherit to_has_stack. */
717 /* Do not inherit to_has_registers. */
718 /* Do not inherit to_has_execution. */
719 INHERIT (to_has_thread_control
, t
);
720 INHERIT (to_can_async_p
, t
);
721 INHERIT (to_is_async_p
, t
);
722 INHERIT (to_async
, t
);
723 INHERIT (to_find_memory_regions
, t
);
724 INHERIT (to_make_corefile_notes
, t
);
725 INHERIT (to_get_bookmark
, t
);
726 INHERIT (to_goto_bookmark
, t
);
727 /* Do not inherit to_get_thread_local_address. */
728 INHERIT (to_can_execute_reverse
, t
);
729 INHERIT (to_execution_direction
, t
);
730 INHERIT (to_thread_architecture
, t
);
731 /* Do not inherit to_read_description. */
732 INHERIT (to_get_ada_task_ptid
, t
);
733 /* Do not inherit to_search_memory. */
734 INHERIT (to_supports_multi_process
, t
);
735 INHERIT (to_supports_enable_disable_tracepoint
, t
);
736 INHERIT (to_supports_string_tracing
, t
);
737 INHERIT (to_trace_init
, t
);
738 INHERIT (to_download_tracepoint
, t
);
739 INHERIT (to_can_download_tracepoint
, t
);
740 INHERIT (to_download_trace_state_variable
, t
);
741 INHERIT (to_enable_tracepoint
, t
);
742 INHERIT (to_disable_tracepoint
, t
);
743 INHERIT (to_trace_set_readonly_regions
, t
);
744 INHERIT (to_trace_start
, t
);
745 INHERIT (to_get_trace_status
, t
);
746 INHERIT (to_get_tracepoint_status
, t
);
747 INHERIT (to_trace_stop
, t
);
748 INHERIT (to_trace_find
, t
);
749 INHERIT (to_get_trace_state_variable_value
, t
);
750 INHERIT (to_save_trace_data
, t
);
751 INHERIT (to_upload_tracepoints
, t
);
752 INHERIT (to_upload_trace_state_variables
, t
);
753 INHERIT (to_get_raw_trace_data
, t
);
754 INHERIT (to_get_min_fast_tracepoint_insn_len
, t
);
755 INHERIT (to_set_disconnected_tracing
, t
);
756 INHERIT (to_set_circular_trace_buffer
, t
);
757 INHERIT (to_set_trace_buffer_size
, t
);
758 INHERIT (to_set_trace_notes
, t
);
759 INHERIT (to_get_tib_address
, t
);
760 INHERIT (to_set_permissions
, t
);
761 INHERIT (to_static_tracepoint_marker_at
, t
);
762 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
763 INHERIT (to_traceframe_info
, t
);
764 INHERIT (to_use_agent
, t
);
765 INHERIT (to_can_use_agent
, t
);
766 INHERIT (to_augmented_libraries_svr4_read
, t
);
767 INHERIT (to_magic
, t
);
768 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
769 INHERIT (to_can_run_breakpoint_commands
, t
);
770 /* Do not inherit to_memory_map. */
771 /* Do not inherit to_flash_erase. */
772 /* Do not inherit to_flash_done. */
776 /* Clean up a target struct so it no longer has any zero pointers in
777 it. Some entries are defaulted to a method that print an error,
778 others are hard-wired to a standard recursive default. */
780 #define de_fault(field, value) \
781 if (!current_target.field) \
782 current_target.field = value
785 (void (*) (char *, int))
790 de_fault (to_post_attach
,
793 de_fault (to_prepare_to_store
,
794 (void (*) (struct regcache
*))
796 de_fault (deprecated_xfer_memory
,
797 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
798 struct mem_attrib
*, struct target_ops
*))
800 de_fault (to_files_info
,
801 (void (*) (struct target_ops
*))
803 de_fault (to_insert_breakpoint
,
804 memory_insert_breakpoint
);
805 de_fault (to_remove_breakpoint
,
806 memory_remove_breakpoint
);
807 de_fault (to_can_use_hw_breakpoint
,
808 (int (*) (int, int, int))
810 de_fault (to_insert_hw_breakpoint
,
811 (int (*) (struct gdbarch
*, struct bp_target_info
*))
813 de_fault (to_remove_hw_breakpoint
,
814 (int (*) (struct gdbarch
*, struct bp_target_info
*))
816 de_fault (to_insert_watchpoint
,
817 (int (*) (CORE_ADDR
, int, int, struct expression
*))
819 de_fault (to_remove_watchpoint
,
820 (int (*) (CORE_ADDR
, int, int, struct expression
*))
822 de_fault (to_stopped_by_watchpoint
,
825 de_fault (to_stopped_data_address
,
826 (int (*) (struct target_ops
*, CORE_ADDR
*))
828 de_fault (to_watchpoint_addr_within_range
,
829 default_watchpoint_addr_within_range
);
830 de_fault (to_region_ok_for_hw_watchpoint
,
831 default_region_ok_for_hw_watchpoint
);
832 de_fault (to_can_accel_watchpoint_condition
,
833 (int (*) (CORE_ADDR
, int, int, struct expression
*))
835 de_fault (to_terminal_init
,
838 de_fault (to_terminal_inferior
,
841 de_fault (to_terminal_ours_for_output
,
844 de_fault (to_terminal_ours
,
847 de_fault (to_terminal_save_ours
,
850 de_fault (to_terminal_info
,
851 default_terminal_info
);
853 (void (*) (char *, int))
855 de_fault (to_post_startup_inferior
,
858 de_fault (to_insert_fork_catchpoint
,
861 de_fault (to_remove_fork_catchpoint
,
864 de_fault (to_insert_vfork_catchpoint
,
867 de_fault (to_remove_vfork_catchpoint
,
870 de_fault (to_insert_exec_catchpoint
,
873 de_fault (to_remove_exec_catchpoint
,
876 de_fault (to_set_syscall_catchpoint
,
877 (int (*) (int, int, int, int, int *))
879 de_fault (to_has_exited
,
880 (int (*) (int, int, int *))
882 de_fault (to_can_run
,
884 de_fault (to_extra_thread_info
,
885 (char *(*) (struct thread_info
*))
887 de_fault (to_thread_name
,
888 (char *(*) (struct thread_info
*))
893 current_target
.to_xfer_partial
= current_xfer_partial
;
895 (void (*) (char *, struct ui_file
*))
897 de_fault (to_pid_to_exec_file
,
901 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
903 de_fault (to_thread_architecture
,
904 default_thread_architecture
);
905 current_target
.to_read_description
= NULL
;
906 de_fault (to_get_ada_task_ptid
,
907 (ptid_t (*) (long, long))
908 default_get_ada_task_ptid
);
909 de_fault (to_supports_multi_process
,
912 de_fault (to_supports_enable_disable_tracepoint
,
915 de_fault (to_supports_string_tracing
,
918 de_fault (to_trace_init
,
921 de_fault (to_download_tracepoint
,
922 (void (*) (struct bp_location
*))
924 de_fault (to_can_download_tracepoint
,
927 de_fault (to_download_trace_state_variable
,
928 (void (*) (struct trace_state_variable
*))
930 de_fault (to_enable_tracepoint
,
931 (void (*) (struct bp_location
*))
933 de_fault (to_disable_tracepoint
,
934 (void (*) (struct bp_location
*))
936 de_fault (to_trace_set_readonly_regions
,
939 de_fault (to_trace_start
,
942 de_fault (to_get_trace_status
,
943 (int (*) (struct trace_status
*))
945 de_fault (to_get_tracepoint_status
,
946 (void (*) (struct breakpoint
*, struct uploaded_tp
*))
948 de_fault (to_trace_stop
,
951 de_fault (to_trace_find
,
952 (int (*) (enum trace_find_type
, int, CORE_ADDR
, CORE_ADDR
, int *))
954 de_fault (to_get_trace_state_variable_value
,
955 (int (*) (int, LONGEST
*))
957 de_fault (to_save_trace_data
,
958 (int (*) (const char *))
960 de_fault (to_upload_tracepoints
,
961 (int (*) (struct uploaded_tp
**))
963 de_fault (to_upload_trace_state_variables
,
964 (int (*) (struct uploaded_tsv
**))
966 de_fault (to_get_raw_trace_data
,
967 (LONGEST (*) (gdb_byte
*, ULONGEST
, LONGEST
))
969 de_fault (to_get_min_fast_tracepoint_insn_len
,
972 de_fault (to_set_disconnected_tracing
,
975 de_fault (to_set_circular_trace_buffer
,
978 de_fault (to_set_trace_buffer_size
,
981 de_fault (to_set_trace_notes
,
982 (int (*) (const char *, const char *, const char *))
984 de_fault (to_get_tib_address
,
985 (int (*) (ptid_t
, CORE_ADDR
*))
987 de_fault (to_set_permissions
,
990 de_fault (to_static_tracepoint_marker_at
,
991 (int (*) (CORE_ADDR
, struct static_tracepoint_marker
*))
993 de_fault (to_static_tracepoint_markers_by_strid
,
994 (VEC(static_tracepoint_marker_p
) * (*) (const char *))
996 de_fault (to_traceframe_info
,
997 (struct traceframe_info
* (*) (void))
999 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
1002 de_fault (to_can_run_breakpoint_commands
,
1005 de_fault (to_use_agent
,
1008 de_fault (to_can_use_agent
,
1011 de_fault (to_augmented_libraries_svr4_read
,
1014 de_fault (to_execution_direction
, default_execution_direction
);
1018 /* Finally, position the target-stack beneath the squashed
1019 "current_target". That way code looking for a non-inherited
1020 target method can quickly and simply find it. */
1021 current_target
.beneath
= target_stack
;
1024 setup_target_debug ();
1027 /* Push a new target type into the stack of the existing target accessors,
1028 possibly superseding some of the existing accessors.
1030 Rather than allow an empty stack, we always have the dummy target at
1031 the bottom stratum, so we can call the function vectors without
1035 push_target (struct target_ops
*t
)
1037 struct target_ops
**cur
;
1039 /* Check magic number. If wrong, it probably means someone changed
1040 the struct definition, but not all the places that initialize one. */
1041 if (t
->to_magic
!= OPS_MAGIC
)
1043 fprintf_unfiltered (gdb_stderr
,
1044 "Magic number of %s target struct wrong\n",
1046 internal_error (__FILE__
, __LINE__
,
1047 _("failed internal consistency check"));
1050 /* Find the proper stratum to install this target in. */
1051 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1053 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
1057 /* If there's already targets at this stratum, remove them. */
1058 /* FIXME: cagney/2003-10-15: I think this should be popping all
1059 targets to CUR, and not just those at this stratum level. */
1060 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
1062 /* There's already something at this stratum level. Close it,
1063 and un-hook it from the stack. */
1064 struct target_ops
*tmp
= (*cur
);
1066 (*cur
) = (*cur
)->beneath
;
1067 tmp
->beneath
= NULL
;
1071 /* We have removed all targets in our stratum, now add the new one. */
1072 t
->beneath
= (*cur
);
1075 update_current_target ();
1078 /* Remove a target_ops vector from the stack, wherever it may be.
1079 Return how many times it was removed (0 or 1). */
1082 unpush_target (struct target_ops
*t
)
1084 struct target_ops
**cur
;
1085 struct target_ops
*tmp
;
1087 if (t
->to_stratum
== dummy_stratum
)
1088 internal_error (__FILE__
, __LINE__
,
1089 _("Attempt to unpush the dummy target"));
1091 /* Look for the specified target. Note that we assume that a target
1092 can only occur once in the target stack. */
1094 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1100 /* If we don't find target_ops, quit. Only open targets should be
1105 /* Unchain the target. */
1107 (*cur
) = (*cur
)->beneath
;
1108 tmp
->beneath
= NULL
;
1110 update_current_target ();
1112 /* Finally close the target. Note we do this after unchaining, so
1113 any target method calls from within the target_close
1114 implementation don't end up in T anymore. */
1121 pop_all_targets_above (enum strata above_stratum
)
1123 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
1125 if (!unpush_target (target_stack
))
1127 fprintf_unfiltered (gdb_stderr
,
1128 "pop_all_targets couldn't find target %s\n",
1129 target_stack
->to_shortname
);
1130 internal_error (__FILE__
, __LINE__
,
1131 _("failed internal consistency check"));
1138 pop_all_targets (void)
1140 pop_all_targets_above (dummy_stratum
);
1143 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
1146 target_is_pushed (struct target_ops
*t
)
1148 struct target_ops
**cur
;
1150 /* Check magic number. If wrong, it probably means someone changed
1151 the struct definition, but not all the places that initialize one. */
1152 if (t
->to_magic
!= OPS_MAGIC
)
1154 fprintf_unfiltered (gdb_stderr
,
1155 "Magic number of %s target struct wrong\n",
1157 internal_error (__FILE__
, __LINE__
,
1158 _("failed internal consistency check"));
1161 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1168 /* Using the objfile specified in OBJFILE, find the address for the
1169 current thread's thread-local storage with offset OFFSET. */
1171 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1173 volatile CORE_ADDR addr
= 0;
1174 struct target_ops
*target
;
1176 for (target
= current_target
.beneath
;
1178 target
= target
->beneath
)
1180 if (target
->to_get_thread_local_address
!= NULL
)
1185 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
1187 ptid_t ptid
= inferior_ptid
;
1188 volatile struct gdb_exception ex
;
1190 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1194 /* Fetch the load module address for this objfile. */
1195 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1197 /* If it's 0, throw the appropriate exception. */
1199 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1200 _("TLS load module not found"));
1202 addr
= target
->to_get_thread_local_address (target
, ptid
,
1205 /* If an error occurred, print TLS related messages here. Otherwise,
1206 throw the error to some higher catcher. */
1209 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1213 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1214 error (_("Cannot find thread-local variables "
1215 "in this thread library."));
1217 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1218 if (objfile_is_library
)
1219 error (_("Cannot find shared library `%s' in dynamic"
1220 " linker's load module list"), objfile_name (objfile
));
1222 error (_("Cannot find executable file `%s' in dynamic"
1223 " linker's load module list"), objfile_name (objfile
));
1225 case TLS_NOT_ALLOCATED_YET_ERROR
:
1226 if (objfile_is_library
)
1227 error (_("The inferior has not yet allocated storage for"
1228 " thread-local variables in\n"
1229 "the shared library `%s'\n"
1231 objfile_name (objfile
), target_pid_to_str (ptid
));
1233 error (_("The inferior has not yet allocated storage for"
1234 " thread-local variables in\n"
1235 "the executable `%s'\n"
1237 objfile_name (objfile
), target_pid_to_str (ptid
));
1239 case TLS_GENERIC_ERROR
:
1240 if (objfile_is_library
)
1241 error (_("Cannot find thread-local storage for %s, "
1242 "shared library %s:\n%s"),
1243 target_pid_to_str (ptid
),
1244 objfile_name (objfile
), ex
.message
);
1246 error (_("Cannot find thread-local storage for %s, "
1247 "executable file %s:\n%s"),
1248 target_pid_to_str (ptid
),
1249 objfile_name (objfile
), ex
.message
);
1252 throw_exception (ex
);
1257 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1258 TLS is an ABI-specific thing. But we don't do that yet. */
1260 error (_("Cannot find thread-local variables on this target"));
1266 target_xfer_error_to_string (enum target_xfer_error err
)
1268 #define CASE(X) case X: return #X
1271 CASE(TARGET_XFER_E_IO
);
1272 CASE(TARGET_XFER_E_UNAVAILABLE
);
1281 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1283 /* target_read_string -- read a null terminated string, up to LEN bytes,
1284 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1285 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1286 is responsible for freeing it. Return the number of bytes successfully
1290 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1292 int tlen
, offset
, i
;
1296 int buffer_allocated
;
1298 unsigned int nbytes_read
= 0;
1300 gdb_assert (string
);
1302 /* Small for testing. */
1303 buffer_allocated
= 4;
1304 buffer
= xmalloc (buffer_allocated
);
1309 tlen
= MIN (len
, 4 - (memaddr
& 3));
1310 offset
= memaddr
& 3;
1312 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1315 /* The transfer request might have crossed the boundary to an
1316 unallocated region of memory. Retry the transfer, requesting
1320 errcode
= target_read_memory (memaddr
, buf
, 1);
1325 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1329 bytes
= bufptr
- buffer
;
1330 buffer_allocated
*= 2;
1331 buffer
= xrealloc (buffer
, buffer_allocated
);
1332 bufptr
= buffer
+ bytes
;
1335 for (i
= 0; i
< tlen
; i
++)
1337 *bufptr
++ = buf
[i
+ offset
];
1338 if (buf
[i
+ offset
] == '\000')
1340 nbytes_read
+= i
+ 1;
1347 nbytes_read
+= tlen
;
1356 struct target_section_table
*
1357 target_get_section_table (struct target_ops
*target
)
1359 struct target_ops
*t
;
1362 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1364 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1365 if (t
->to_get_section_table
!= NULL
)
1366 return (*t
->to_get_section_table
) (t
);
1371 /* Find a section containing ADDR. */
1373 struct target_section
*
1374 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1376 struct target_section_table
*table
= target_get_section_table (target
);
1377 struct target_section
*secp
;
1382 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1384 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1390 /* Read memory from the live target, even if currently inspecting a
1391 traceframe. The return is the same as that of target_read. */
1394 target_read_live_memory (enum target_object object
,
1395 ULONGEST memaddr
, gdb_byte
*myaddr
, LONGEST len
)
1398 struct cleanup
*cleanup
;
1400 /* Switch momentarily out of tfind mode so to access live memory.
1401 Note that this must not clear global state, such as the frame
1402 cache, which must still remain valid for the previous traceframe.
1403 We may be _building_ the frame cache at this point. */
1404 cleanup
= make_cleanup_restore_traceframe_number ();
1405 set_traceframe_number (-1);
1407 ret
= target_read (current_target
.beneath
, object
, NULL
,
1408 myaddr
, memaddr
, len
);
1410 do_cleanups (cleanup
);
1414 /* Using the set of read-only target sections of OPS, read live
1415 read-only memory. Note that the actual reads start from the
1416 top-most target again.
1418 For interface/parameters/return description see target.h,
1422 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1423 enum target_object object
,
1424 gdb_byte
*readbuf
, ULONGEST memaddr
,
1427 struct target_section
*secp
;
1428 struct target_section_table
*table
;
1430 secp
= target_section_by_addr (ops
, memaddr
);
1432 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1433 secp
->the_bfd_section
)
1436 struct target_section
*p
;
1437 ULONGEST memend
= memaddr
+ len
;
1439 table
= target_get_section_table (ops
);
1441 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1443 if (memaddr
>= p
->addr
)
1445 if (memend
<= p
->endaddr
)
1447 /* Entire transfer is within this section. */
1448 return target_read_live_memory (object
, memaddr
,
1451 else if (memaddr
>= p
->endaddr
)
1453 /* This section ends before the transfer starts. */
1458 /* This section overlaps the transfer. Just do half. */
1459 len
= p
->endaddr
- memaddr
;
1460 return target_read_live_memory (object
, memaddr
,
1470 /* Perform a partial memory transfer.
1471 For docs see target.h, to_xfer_partial. */
1474 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1475 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1480 struct mem_region
*region
;
1481 struct inferior
*inf
;
1483 /* For accesses to unmapped overlay sections, read directly from
1484 files. Must do this first, as MEMADDR may need adjustment. */
1485 if (readbuf
!= NULL
&& overlay_debugging
)
1487 struct obj_section
*section
= find_pc_overlay (memaddr
);
1489 if (pc_in_unmapped_range (memaddr
, section
))
1491 struct target_section_table
*table
1492 = target_get_section_table (ops
);
1493 const char *section_name
= section
->the_bfd_section
->name
;
1495 memaddr
= overlay_mapped_address (memaddr
, section
);
1496 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1499 table
->sections_end
,
1504 /* Try the executable files, if "trust-readonly-sections" is set. */
1505 if (readbuf
!= NULL
&& trust_readonly
)
1507 struct target_section
*secp
;
1508 struct target_section_table
*table
;
1510 secp
= target_section_by_addr (ops
, memaddr
);
1512 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1513 secp
->the_bfd_section
)
1516 table
= target_get_section_table (ops
);
1517 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1520 table
->sections_end
,
1525 /* If reading unavailable memory in the context of traceframes, and
1526 this address falls within a read-only section, fallback to
1527 reading from live memory. */
1528 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1530 VEC(mem_range_s
) *available
;
1532 /* If we fail to get the set of available memory, then the
1533 target does not support querying traceframe info, and so we
1534 attempt reading from the traceframe anyway (assuming the
1535 target implements the old QTro packet then). */
1536 if (traceframe_available_memory (&available
, memaddr
, len
))
1538 struct cleanup
*old_chain
;
1540 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1542 if (VEC_empty (mem_range_s
, available
)
1543 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1545 /* Don't read into the traceframe's available
1547 if (!VEC_empty (mem_range_s
, available
))
1549 LONGEST oldlen
= len
;
1551 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1552 gdb_assert (len
<= oldlen
);
1555 do_cleanups (old_chain
);
1557 /* This goes through the topmost target again. */
1558 res
= memory_xfer_live_readonly_partial (ops
, object
,
1559 readbuf
, memaddr
, len
);
1563 /* No use trying further, we know some memory starting
1564 at MEMADDR isn't available. */
1565 return TARGET_XFER_E_UNAVAILABLE
;
1568 /* Don't try to read more than how much is available, in
1569 case the target implements the deprecated QTro packet to
1570 cater for older GDBs (the target's knowledge of read-only
1571 sections may be outdated by now). */
1572 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1574 do_cleanups (old_chain
);
1578 /* Try GDB's internal data cache. */
1579 region
= lookup_mem_region (memaddr
);
1580 /* region->hi == 0 means there's no upper bound. */
1581 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1584 reg_len
= region
->hi
- memaddr
;
1586 switch (region
->attrib
.mode
)
1589 if (writebuf
!= NULL
)
1594 if (readbuf
!= NULL
)
1599 /* We only support writing to flash during "load" for now. */
1600 if (writebuf
!= NULL
)
1601 error (_("Writing to flash memory forbidden in this context"));
1608 if (!ptid_equal (inferior_ptid
, null_ptid
))
1609 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1614 /* The dcache reads whole cache lines; that doesn't play well
1615 with reading from a trace buffer, because reading outside of
1616 the collected memory range fails. */
1617 && get_traceframe_number () == -1
1618 && (region
->attrib
.cache
1619 || (stack_cache_enabled_p
&& object
== TARGET_OBJECT_STACK_MEMORY
)))
1621 DCACHE
*dcache
= target_dcache_get_or_init ();
1623 if (readbuf
!= NULL
)
1624 res
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1626 /* FIXME drow/2006-08-09: If we're going to preserve const
1627 correctness dcache_xfer_memory should take readbuf and
1629 res
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1637 /* If none of those methods found the memory we wanted, fall back
1638 to a target partial transfer. Normally a single call to
1639 to_xfer_partial is enough; if it doesn't recognize an object
1640 it will call the to_xfer_partial of the next target down.
1641 But for memory this won't do. Memory is the only target
1642 object which can be read from more than one valid target.
1643 A core file, for instance, could have some of memory but
1644 delegate other bits to the target below it. So, we must
1645 manually try all targets. */
1649 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1650 readbuf
, writebuf
, memaddr
, reg_len
);
1654 /* We want to continue past core files to executables, but not
1655 past a running target's memory. */
1656 if (ops
->to_has_all_memory (ops
))
1661 while (ops
!= NULL
);
1663 /* Make sure the cache gets updated no matter what - if we are writing
1664 to the stack. Even if this write is not tagged as such, we still need
1665 to update the cache. */
1670 && !region
->attrib
.cache
1671 && stack_cache_enabled_p
1672 && object
!= TARGET_OBJECT_STACK_MEMORY
)
1674 DCACHE
*dcache
= target_dcache_get_or_init ();
1676 dcache_update (dcache
, memaddr
, (void *) writebuf
, res
);
1679 /* If we still haven't got anything, return the last error. We
1684 /* Perform a partial memory transfer. For docs see target.h,
1688 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1689 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1694 /* Zero length requests are ok and require no work. */
1698 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1699 breakpoint insns, thus hiding out from higher layers whether
1700 there are software breakpoints inserted in the code stream. */
1701 if (readbuf
!= NULL
)
1703 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
);
1705 if (res
> 0 && !show_memory_breakpoints
)
1706 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1711 struct cleanup
*old_chain
;
1713 /* A large write request is likely to be partially satisfied
1714 by memory_xfer_partial_1. We will continually malloc
1715 and free a copy of the entire write request for breakpoint
1716 shadow handling even though we only end up writing a small
1717 subset of it. Cap writes to 4KB to mitigate this. */
1718 len
= min (4096, len
);
1720 buf
= xmalloc (len
);
1721 old_chain
= make_cleanup (xfree
, buf
);
1722 memcpy (buf
, writebuf
, len
);
1724 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1725 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
);
1727 do_cleanups (old_chain
);
1734 restore_show_memory_breakpoints (void *arg
)
1736 show_memory_breakpoints
= (uintptr_t) arg
;
1740 make_show_memory_breakpoints_cleanup (int show
)
1742 int current
= show_memory_breakpoints
;
1744 show_memory_breakpoints
= show
;
1745 return make_cleanup (restore_show_memory_breakpoints
,
1746 (void *) (uintptr_t) current
);
1749 /* For docs see target.h, to_xfer_partial. */
1752 target_xfer_partial (struct target_ops
*ops
,
1753 enum target_object object
, const char *annex
,
1754 void *readbuf
, const void *writebuf
,
1755 ULONGEST offset
, LONGEST len
)
1759 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1761 if (writebuf
&& !may_write_memory
)
1762 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1763 core_addr_to_string_nz (offset
), plongest (len
));
1765 /* If this is a memory transfer, let the memory-specific code
1766 have a look at it instead. Memory transfers are more
1768 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
)
1769 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1770 writebuf
, offset
, len
);
1773 enum target_object raw_object
= object
;
1775 /* If this is a raw memory transfer, request the normal
1776 memory object from other layers. */
1777 if (raw_object
== TARGET_OBJECT_RAW_MEMORY
)
1778 raw_object
= TARGET_OBJECT_MEMORY
;
1780 retval
= ops
->to_xfer_partial (ops
, raw_object
, annex
, readbuf
,
1781 writebuf
, offset
, len
);
1786 const unsigned char *myaddr
= NULL
;
1788 fprintf_unfiltered (gdb_stdlog
,
1789 "%s:target_xfer_partial "
1790 "(%d, %s, %s, %s, %s, %s) = %s",
1793 (annex
? annex
: "(null)"),
1794 host_address_to_string (readbuf
),
1795 host_address_to_string (writebuf
),
1796 core_addr_to_string_nz (offset
),
1797 plongest (len
), plongest (retval
));
1803 if (retval
> 0 && myaddr
!= NULL
)
1807 fputs_unfiltered (", bytes =", gdb_stdlog
);
1808 for (i
= 0; i
< retval
; i
++)
1810 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1812 if (targetdebug
< 2 && i
> 0)
1814 fprintf_unfiltered (gdb_stdlog
, " ...");
1817 fprintf_unfiltered (gdb_stdlog
, "\n");
1820 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1824 fputc_unfiltered ('\n', gdb_stdlog
);
1829 /* Read LEN bytes of target memory at address MEMADDR, placing the
1830 results in GDB's memory at MYADDR. Returns either 0 for success or
1831 a target_xfer_error value if any error occurs.
1833 If an error occurs, no guarantee is made about the contents of the data at
1834 MYADDR. In particular, the caller should not depend upon partial reads
1835 filling the buffer with good data. There is no way for the caller to know
1836 how much good data might have been transfered anyway. Callers that can
1837 deal with partial reads should call target_read (which will retry until
1838 it makes no progress, and then return how much was transferred). */
1841 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1843 /* Dispatch to the topmost target, not the flattened current_target.
1844 Memory accesses check target->to_has_(all_)memory, and the
1845 flattened target doesn't inherit those. */
1846 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1847 myaddr
, memaddr
, len
) == len
)
1850 return TARGET_XFER_E_IO
;
1853 /* Like target_read_memory, but specify explicitly that this is a read from
1854 the target's stack. This may trigger different cache behavior. */
1857 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1859 /* Dispatch to the topmost target, not the flattened current_target.
1860 Memory accesses check target->to_has_(all_)memory, and the
1861 flattened target doesn't inherit those. */
1863 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1864 myaddr
, memaddr
, len
) == len
)
1867 return TARGET_XFER_E_IO
;
1870 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1871 Returns either 0 for success or a target_xfer_error value if any
1872 error occurs. If an error occurs, no guarantee is made about how
1873 much data got written. Callers that can deal with partial writes
1874 should call target_write. */
1877 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1879 /* Dispatch to the topmost target, not the flattened current_target.
1880 Memory accesses check target->to_has_(all_)memory, and the
1881 flattened target doesn't inherit those. */
1882 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1883 myaddr
, memaddr
, len
) == len
)
1886 return TARGET_XFER_E_IO
;
1889 /* Write LEN bytes from MYADDR to target raw memory at address
1890 MEMADDR. Returns either 0 for success or a target_xfer_error value
1891 if any error occurs. If an error occurs, no guarantee is made
1892 about how much data got written. Callers that can deal with
1893 partial writes should call target_write. */
1896 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1898 /* Dispatch to the topmost target, not the flattened current_target.
1899 Memory accesses check target->to_has_(all_)memory, and the
1900 flattened target doesn't inherit those. */
1901 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1902 myaddr
, memaddr
, len
) == len
)
1905 return TARGET_XFER_E_IO
;
1908 /* Fetch the target's memory map. */
1911 target_memory_map (void)
1913 VEC(mem_region_s
) *result
;
1914 struct mem_region
*last_one
, *this_one
;
1916 struct target_ops
*t
;
1919 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1921 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1922 if (t
->to_memory_map
!= NULL
)
1928 result
= t
->to_memory_map (t
);
1932 qsort (VEC_address (mem_region_s
, result
),
1933 VEC_length (mem_region_s
, result
),
1934 sizeof (struct mem_region
), mem_region_cmp
);
1936 /* Check that regions do not overlap. Simultaneously assign
1937 a numbering for the "mem" commands to use to refer to
1940 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1942 this_one
->number
= ix
;
1944 if (last_one
&& last_one
->hi
> this_one
->lo
)
1946 warning (_("Overlapping regions in memory map: ignoring"));
1947 VEC_free (mem_region_s
, result
);
1950 last_one
= this_one
;
1957 target_flash_erase (ULONGEST address
, LONGEST length
)
1959 struct target_ops
*t
;
1961 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1962 if (t
->to_flash_erase
!= NULL
)
1965 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1966 hex_string (address
), phex (length
, 0));
1967 t
->to_flash_erase (t
, address
, length
);
1975 target_flash_done (void)
1977 struct target_ops
*t
;
1979 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1980 if (t
->to_flash_done
!= NULL
)
1983 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1984 t
->to_flash_done (t
);
1992 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1993 struct cmd_list_element
*c
, const char *value
)
1995 fprintf_filtered (file
,
1996 _("Mode for reading from readonly sections is %s.\n"),
2000 /* More generic transfers. */
2003 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
2004 const char *annex
, gdb_byte
*readbuf
,
2005 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
2007 if (object
== TARGET_OBJECT_MEMORY
2008 && ops
->deprecated_xfer_memory
!= NULL
)
2009 /* If available, fall back to the target's
2010 "deprecated_xfer_memory" method. */
2015 if (writebuf
!= NULL
)
2017 void *buffer
= xmalloc (len
);
2018 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
2020 memcpy (buffer
, writebuf
, len
);
2021 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
2022 1/*write*/, NULL
, ops
);
2023 do_cleanups (cleanup
);
2025 if (readbuf
!= NULL
)
2026 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
2027 0/*read*/, NULL
, ops
);
2030 else if (xfered
== 0 && errno
== 0)
2031 /* "deprecated_xfer_memory" uses 0, cross checked against
2032 ERRNO as one indication of an error. */
2037 else if (ops
->beneath
!= NULL
)
2038 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
2039 readbuf
, writebuf
, offset
, len
);
2044 /* The xfer_partial handler for the topmost target. Unlike the default,
2045 it does not need to handle memory specially; it just passes all
2046 requests down the stack. */
2049 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
2050 const char *annex
, gdb_byte
*readbuf
,
2051 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
2053 if (ops
->beneath
!= NULL
)
2054 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
2055 readbuf
, writebuf
, offset
, len
);
2060 /* Target vector read/write partial wrapper functions. */
2063 target_read_partial (struct target_ops
*ops
,
2064 enum target_object object
,
2065 const char *annex
, gdb_byte
*buf
,
2066 ULONGEST offset
, LONGEST len
)
2068 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
2072 target_write_partial (struct target_ops
*ops
,
2073 enum target_object object
,
2074 const char *annex
, const gdb_byte
*buf
,
2075 ULONGEST offset
, LONGEST len
)
2077 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
2080 /* Wrappers to perform the full transfer. */
2082 /* For docs on target_read see target.h. */
2085 target_read (struct target_ops
*ops
,
2086 enum target_object object
,
2087 const char *annex
, gdb_byte
*buf
,
2088 ULONGEST offset
, LONGEST len
)
2092 while (xfered
< len
)
2094 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
2095 (gdb_byte
*) buf
+ xfered
,
2096 offset
+ xfered
, len
- xfered
);
2098 /* Call an observer, notifying them of the xfer progress? */
2109 /* Assuming that the entire [begin, end) range of memory cannot be
2110 read, try to read whatever subrange is possible to read.
2112 The function returns, in RESULT, either zero or one memory block.
2113 If there's a readable subrange at the beginning, it is completely
2114 read and returned. Any further readable subrange will not be read.
2115 Otherwise, if there's a readable subrange at the end, it will be
2116 completely read and returned. Any readable subranges before it
2117 (obviously, not starting at the beginning), will be ignored. In
2118 other cases -- either no readable subrange, or readable subrange(s)
2119 that is neither at the beginning, or end, nothing is returned.
2121 The purpose of this function is to handle a read across a boundary
2122 of accessible memory in a case when memory map is not available.
2123 The above restrictions are fine for this case, but will give
2124 incorrect results if the memory is 'patchy'. However, supporting
2125 'patchy' memory would require trying to read every single byte,
2126 and it seems unacceptable solution. Explicit memory map is
2127 recommended for this case -- and target_read_memory_robust will
2128 take care of reading multiple ranges then. */
2131 read_whatever_is_readable (struct target_ops
*ops
,
2132 ULONGEST begin
, ULONGEST end
,
2133 VEC(memory_read_result_s
) **result
)
2135 gdb_byte
*buf
= xmalloc (end
- begin
);
2136 ULONGEST current_begin
= begin
;
2137 ULONGEST current_end
= end
;
2139 memory_read_result_s r
;
2141 /* If we previously failed to read 1 byte, nothing can be done here. */
2142 if (end
- begin
<= 1)
2148 /* Check that either first or the last byte is readable, and give up
2149 if not. This heuristic is meant to permit reading accessible memory
2150 at the boundary of accessible region. */
2151 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2152 buf
, begin
, 1) == 1)
2157 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2158 buf
+ (end
-begin
) - 1, end
- 1, 1) == 1)
2169 /* Loop invariant is that the [current_begin, current_end) was previously
2170 found to be not readable as a whole.
2172 Note loop condition -- if the range has 1 byte, we can't divide the range
2173 so there's no point trying further. */
2174 while (current_end
- current_begin
> 1)
2176 ULONGEST first_half_begin
, first_half_end
;
2177 ULONGEST second_half_begin
, second_half_end
;
2179 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2183 first_half_begin
= current_begin
;
2184 first_half_end
= middle
;
2185 second_half_begin
= middle
;
2186 second_half_end
= current_end
;
2190 first_half_begin
= middle
;
2191 first_half_end
= current_end
;
2192 second_half_begin
= current_begin
;
2193 second_half_end
= middle
;
2196 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2197 buf
+ (first_half_begin
- begin
),
2199 first_half_end
- first_half_begin
);
2201 if (xfer
== first_half_end
- first_half_begin
)
2203 /* This half reads up fine. So, the error must be in the
2205 current_begin
= second_half_begin
;
2206 current_end
= second_half_end
;
2210 /* This half is not readable. Because we've tried one byte, we
2211 know some part of this half if actually redable. Go to the next
2212 iteration to divide again and try to read.
2214 We don't handle the other half, because this function only tries
2215 to read a single readable subrange. */
2216 current_begin
= first_half_begin
;
2217 current_end
= first_half_end
;
2223 /* The [begin, current_begin) range has been read. */
2225 r
.end
= current_begin
;
2230 /* The [current_end, end) range has been read. */
2231 LONGEST rlen
= end
- current_end
;
2233 r
.data
= xmalloc (rlen
);
2234 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2235 r
.begin
= current_end
;
2239 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2243 free_memory_read_result_vector (void *x
)
2245 VEC(memory_read_result_s
) *v
= x
;
2246 memory_read_result_s
*current
;
2249 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2251 xfree (current
->data
);
2253 VEC_free (memory_read_result_s
, v
);
2256 VEC(memory_read_result_s
) *
2257 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2259 VEC(memory_read_result_s
) *result
= 0;
2262 while (xfered
< len
)
2264 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2267 /* If there is no explicit region, a fake one should be created. */
2268 gdb_assert (region
);
2270 if (region
->hi
== 0)
2271 rlen
= len
- xfered
;
2273 rlen
= region
->hi
- offset
;
2275 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2277 /* Cannot read this region. Note that we can end up here only
2278 if the region is explicitly marked inaccessible, or
2279 'inaccessible-by-default' is in effect. */
2284 LONGEST to_read
= min (len
- xfered
, rlen
);
2285 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2287 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2288 (gdb_byte
*) buffer
,
2289 offset
+ xfered
, to_read
);
2290 /* Call an observer, notifying them of the xfer progress? */
2293 /* Got an error reading full chunk. See if maybe we can read
2296 read_whatever_is_readable (ops
, offset
+ xfered
,
2297 offset
+ xfered
+ to_read
, &result
);
2302 struct memory_read_result r
;
2304 r
.begin
= offset
+ xfered
;
2305 r
.end
= r
.begin
+ xfer
;
2306 VEC_safe_push (memory_read_result_s
, result
, &r
);
2316 /* An alternative to target_write with progress callbacks. */
2319 target_write_with_progress (struct target_ops
*ops
,
2320 enum target_object object
,
2321 const char *annex
, const gdb_byte
*buf
,
2322 ULONGEST offset
, LONGEST len
,
2323 void (*progress
) (ULONGEST
, void *), void *baton
)
2327 /* Give the progress callback a chance to set up. */
2329 (*progress
) (0, baton
);
2331 while (xfered
< len
)
2333 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
2334 (gdb_byte
*) buf
+ xfered
,
2335 offset
+ xfered
, len
- xfered
);
2343 (*progress
) (xfer
, baton
);
2351 /* For docs on target_write see target.h. */
2354 target_write (struct target_ops
*ops
,
2355 enum target_object object
,
2356 const char *annex
, const gdb_byte
*buf
,
2357 ULONGEST offset
, LONGEST len
)
2359 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2363 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2364 the size of the transferred data. PADDING additional bytes are
2365 available in *BUF_P. This is a helper function for
2366 target_read_alloc; see the declaration of that function for more
2370 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2371 const char *annex
, gdb_byte
**buf_p
, int padding
)
2373 size_t buf_alloc
, buf_pos
;
2377 /* This function does not have a length parameter; it reads the
2378 entire OBJECT). Also, it doesn't support objects fetched partly
2379 from one target and partly from another (in a different stratum,
2380 e.g. a core file and an executable). Both reasons make it
2381 unsuitable for reading memory. */
2382 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2384 /* Start by reading up to 4K at a time. The target will throttle
2385 this number down if necessary. */
2387 buf
= xmalloc (buf_alloc
);
2391 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2392 buf_pos
, buf_alloc
- buf_pos
- padding
);
2395 /* An error occurred. */
2401 /* Read all there was. */
2411 /* If the buffer is filling up, expand it. */
2412 if (buf_alloc
< buf_pos
* 2)
2415 buf
= xrealloc (buf
, buf_alloc
);
2422 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2423 the size of the transferred data. See the declaration in "target.h"
2424 function for more information about the return value. */
2427 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2428 const char *annex
, gdb_byte
**buf_p
)
2430 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2433 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2434 returned as a string, allocated using xmalloc. If an error occurs
2435 or the transfer is unsupported, NULL is returned. Empty objects
2436 are returned as allocated but empty strings. A warning is issued
2437 if the result contains any embedded NUL bytes. */
2440 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2445 LONGEST i
, transferred
;
2447 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2448 bufstr
= (char *) buffer
;
2450 if (transferred
< 0)
2453 if (transferred
== 0)
2454 return xstrdup ("");
2456 bufstr
[transferred
] = 0;
2458 /* Check for embedded NUL bytes; but allow trailing NULs. */
2459 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2462 warning (_("target object %d, annex %s, "
2463 "contained unexpected null characters"),
2464 (int) object
, annex
? annex
: "(none)");
2471 /* Memory transfer methods. */
2474 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2477 /* This method is used to read from an alternate, non-current
2478 target. This read must bypass the overlay support (as symbols
2479 don't match this target), and GDB's internal cache (wrong cache
2480 for this target). */
2481 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2483 memory_error (TARGET_XFER_E_IO
, addr
);
2487 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2488 int len
, enum bfd_endian byte_order
)
2490 gdb_byte buf
[sizeof (ULONGEST
)];
2492 gdb_assert (len
<= sizeof (buf
));
2493 get_target_memory (ops
, addr
, buf
, len
);
2494 return extract_unsigned_integer (buf
, len
, byte_order
);
2498 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2499 struct bp_target_info
*bp_tgt
)
2501 if (!may_insert_breakpoints
)
2503 warning (_("May not insert breakpoints"));
2507 return (*current_target
.to_insert_breakpoint
) (gdbarch
, bp_tgt
);
2511 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2512 struct bp_target_info
*bp_tgt
)
2514 /* This is kind of a weird case to handle, but the permission might
2515 have been changed after breakpoints were inserted - in which case
2516 we should just take the user literally and assume that any
2517 breakpoints should be left in place. */
2518 if (!may_insert_breakpoints
)
2520 warning (_("May not remove breakpoints"));
2524 return (*current_target
.to_remove_breakpoint
) (gdbarch
, bp_tgt
);
2528 target_info (char *args
, int from_tty
)
2530 struct target_ops
*t
;
2531 int has_all_mem
= 0;
2533 if (symfile_objfile
!= NULL
)
2534 printf_unfiltered (_("Symbols from \"%s\".\n"),
2535 objfile_name (symfile_objfile
));
2537 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2539 if (!(*t
->to_has_memory
) (t
))
2542 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2545 printf_unfiltered (_("\tWhile running this, "
2546 "GDB does not access memory from...\n"));
2547 printf_unfiltered ("%s:\n", t
->to_longname
);
2548 (t
->to_files_info
) (t
);
2549 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2553 /* This function is called before any new inferior is created, e.g.
2554 by running a program, attaching, or connecting to a target.
2555 It cleans up any state from previous invocations which might
2556 change between runs. This is a subset of what target_preopen
2557 resets (things which might change between targets). */
2560 target_pre_inferior (int from_tty
)
2562 /* Clear out solib state. Otherwise the solib state of the previous
2563 inferior might have survived and is entirely wrong for the new
2564 target. This has been observed on GNU/Linux using glibc 2.3. How
2576 Cannot access memory at address 0xdeadbeef
2579 /* In some OSs, the shared library list is the same/global/shared
2580 across inferiors. If code is shared between processes, so are
2581 memory regions and features. */
2582 if (!gdbarch_has_global_solist (target_gdbarch ()))
2584 no_shared_libraries (NULL
, from_tty
);
2586 invalidate_target_mem_regions ();
2588 target_clear_description ();
2591 agent_capability_invalidate ();
2594 /* Callback for iterate_over_inferiors. Gets rid of the given
2598 dispose_inferior (struct inferior
*inf
, void *args
)
2600 struct thread_info
*thread
;
2602 thread
= any_thread_of_process (inf
->pid
);
2605 switch_to_thread (thread
->ptid
);
2607 /* Core inferiors actually should be detached, not killed. */
2608 if (target_has_execution
)
2611 target_detach (NULL
, 0);
2617 /* This is to be called by the open routine before it does
2621 target_preopen (int from_tty
)
2625 if (have_inferiors ())
2628 || !have_live_inferiors ()
2629 || query (_("A program is being debugged already. Kill it? ")))
2630 iterate_over_inferiors (dispose_inferior
, NULL
);
2632 error (_("Program not killed."));
2635 /* Calling target_kill may remove the target from the stack. But if
2636 it doesn't (which seems like a win for UDI), remove it now. */
2637 /* Leave the exec target, though. The user may be switching from a
2638 live process to a core of the same program. */
2639 pop_all_targets_above (file_stratum
);
2641 target_pre_inferior (from_tty
);
2644 /* Detach a target after doing deferred register stores. */
2647 target_detach (const char *args
, int from_tty
)
2649 struct target_ops
* t
;
2651 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2652 /* Don't remove global breakpoints here. They're removed on
2653 disconnection from the target. */
2656 /* If we're in breakpoints-always-inserted mode, have to remove
2657 them before detaching. */
2658 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2660 prepare_for_detach ();
2662 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2664 if (t
->to_detach
!= NULL
)
2666 t
->to_detach (t
, args
, from_tty
);
2668 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2674 internal_error (__FILE__
, __LINE__
, _("could not find a target to detach"));
2678 target_disconnect (char *args
, int from_tty
)
2680 struct target_ops
*t
;
2682 /* If we're in breakpoints-always-inserted mode or if breakpoints
2683 are global across processes, we have to remove them before
2685 remove_breakpoints ();
2687 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2688 if (t
->to_disconnect
!= NULL
)
2691 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2693 t
->to_disconnect (t
, args
, from_tty
);
2701 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2703 struct target_ops
*t
;
2705 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2707 if (t
->to_wait
!= NULL
)
2709 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2713 char *status_string
;
2714 char *options_string
;
2716 status_string
= target_waitstatus_to_string (status
);
2717 options_string
= target_options_to_string (options
);
2718 fprintf_unfiltered (gdb_stdlog
,
2719 "target_wait (%d, status, options={%s})"
2721 ptid_get_pid (ptid
), options_string
,
2722 ptid_get_pid (retval
), status_string
);
2723 xfree (status_string
);
2724 xfree (options_string
);
2735 target_pid_to_str (ptid_t ptid
)
2737 struct target_ops
*t
;
2739 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2741 if (t
->to_pid_to_str
!= NULL
)
2742 return (*t
->to_pid_to_str
) (t
, ptid
);
2745 return normal_pid_to_str (ptid
);
2749 target_thread_name (struct thread_info
*info
)
2751 struct target_ops
*t
;
2753 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2755 if (t
->to_thread_name
!= NULL
)
2756 return (*t
->to_thread_name
) (info
);
2763 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2765 struct target_ops
*t
;
2767 target_dcache_invalidate ();
2769 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2771 if (t
->to_resume
!= NULL
)
2773 t
->to_resume (t
, ptid
, step
, signal
);
2775 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2776 ptid_get_pid (ptid
),
2777 step
? "step" : "continue",
2778 gdb_signal_to_name (signal
));
2780 registers_changed_ptid (ptid
);
2781 set_executing (ptid
, 1);
2782 set_running (ptid
, 1);
2783 clear_inline_frame_state (ptid
);
2792 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2794 struct target_ops
*t
;
2796 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2798 if (t
->to_pass_signals
!= NULL
)
2804 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2807 for (i
= 0; i
< numsigs
; i
++)
2808 if (pass_signals
[i
])
2809 fprintf_unfiltered (gdb_stdlog
, " %s",
2810 gdb_signal_to_name (i
));
2812 fprintf_unfiltered (gdb_stdlog
, " })\n");
2815 (*t
->to_pass_signals
) (numsigs
, pass_signals
);
2822 target_program_signals (int numsigs
, unsigned char *program_signals
)
2824 struct target_ops
*t
;
2826 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2828 if (t
->to_program_signals
!= NULL
)
2834 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2837 for (i
= 0; i
< numsigs
; i
++)
2838 if (program_signals
[i
])
2839 fprintf_unfiltered (gdb_stdlog
, " %s",
2840 gdb_signal_to_name (i
));
2842 fprintf_unfiltered (gdb_stdlog
, " })\n");
2845 (*t
->to_program_signals
) (numsigs
, program_signals
);
2851 /* Look through the list of possible targets for a target that can
2855 target_follow_fork (int follow_child
, int detach_fork
)
2857 struct target_ops
*t
;
2859 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2861 if (t
->to_follow_fork
!= NULL
)
2863 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2866 fprintf_unfiltered (gdb_stdlog
,
2867 "target_follow_fork (%d, %d) = %d\n",
2868 follow_child
, detach_fork
, retval
);
2873 /* Some target returned a fork event, but did not know how to follow it. */
2874 internal_error (__FILE__
, __LINE__
,
2875 _("could not find a target to follow fork"));
2879 target_mourn_inferior (void)
2881 struct target_ops
*t
;
2883 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2885 if (t
->to_mourn_inferior
!= NULL
)
2887 t
->to_mourn_inferior (t
);
2889 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2891 /* We no longer need to keep handles on any of the object files.
2892 Make sure to release them to avoid unnecessarily locking any
2893 of them while we're not actually debugging. */
2894 bfd_cache_close_all ();
2900 internal_error (__FILE__
, __LINE__
,
2901 _("could not find a target to follow mourn inferior"));
2904 /* Look for a target which can describe architectural features, starting
2905 from TARGET. If we find one, return its description. */
2907 const struct target_desc
*
2908 target_read_description (struct target_ops
*target
)
2910 struct target_ops
*t
;
2912 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2913 if (t
->to_read_description
!= NULL
)
2915 const struct target_desc
*tdesc
;
2917 tdesc
= t
->to_read_description (t
);
2925 /* The default implementation of to_search_memory.
2926 This implements a basic search of memory, reading target memory and
2927 performing the search here (as opposed to performing the search in on the
2928 target side with, for example, gdbserver). */
2931 simple_search_memory (struct target_ops
*ops
,
2932 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2933 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2934 CORE_ADDR
*found_addrp
)
2936 /* NOTE: also defined in find.c testcase. */
2937 #define SEARCH_CHUNK_SIZE 16000
2938 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2939 /* Buffer to hold memory contents for searching. */
2940 gdb_byte
*search_buf
;
2941 unsigned search_buf_size
;
2942 struct cleanup
*old_cleanups
;
2944 search_buf_size
= chunk_size
+ pattern_len
- 1;
2946 /* No point in trying to allocate a buffer larger than the search space. */
2947 if (search_space_len
< search_buf_size
)
2948 search_buf_size
= search_space_len
;
2950 search_buf
= malloc (search_buf_size
);
2951 if (search_buf
== NULL
)
2952 error (_("Unable to allocate memory to perform the search."));
2953 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2955 /* Prime the search buffer. */
2957 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2958 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2960 warning (_("Unable to access %s bytes of target "
2961 "memory at %s, halting search."),
2962 pulongest (search_buf_size
), hex_string (start_addr
));
2963 do_cleanups (old_cleanups
);
2967 /* Perform the search.
2969 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2970 When we've scanned N bytes we copy the trailing bytes to the start and
2971 read in another N bytes. */
2973 while (search_space_len
>= pattern_len
)
2975 gdb_byte
*found_ptr
;
2976 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2978 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2979 pattern
, pattern_len
);
2981 if (found_ptr
!= NULL
)
2983 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2985 *found_addrp
= found_addr
;
2986 do_cleanups (old_cleanups
);
2990 /* Not found in this chunk, skip to next chunk. */
2992 /* Don't let search_space_len wrap here, it's unsigned. */
2993 if (search_space_len
>= chunk_size
)
2994 search_space_len
-= chunk_size
;
2996 search_space_len
= 0;
2998 if (search_space_len
>= pattern_len
)
3000 unsigned keep_len
= search_buf_size
- chunk_size
;
3001 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
3004 /* Copy the trailing part of the previous iteration to the front
3005 of the buffer for the next iteration. */
3006 gdb_assert (keep_len
== pattern_len
- 1);
3007 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
3009 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
3011 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
3012 search_buf
+ keep_len
, read_addr
,
3013 nr_to_read
) != nr_to_read
)
3015 warning (_("Unable to access %s bytes of target "
3016 "memory at %s, halting search."),
3017 plongest (nr_to_read
),
3018 hex_string (read_addr
));
3019 do_cleanups (old_cleanups
);
3023 start_addr
+= chunk_size
;
3029 do_cleanups (old_cleanups
);
3033 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
3034 sequence of bytes in PATTERN with length PATTERN_LEN.
3036 The result is 1 if found, 0 if not found, and -1 if there was an error
3037 requiring halting of the search (e.g. memory read error).
3038 If the pattern is found the address is recorded in FOUND_ADDRP. */
3041 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
3042 const gdb_byte
*pattern
, ULONGEST pattern_len
,
3043 CORE_ADDR
*found_addrp
)
3045 struct target_ops
*t
;
3048 /* We don't use INHERIT to set current_target.to_search_memory,
3049 so we have to scan the target stack and handle targetdebug
3053 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
3054 hex_string (start_addr
));
3056 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3057 if (t
->to_search_memory
!= NULL
)
3062 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
3063 pattern
, pattern_len
, found_addrp
);
3067 /* If a special version of to_search_memory isn't available, use the
3069 found
= simple_search_memory (current_target
.beneath
,
3070 start_addr
, search_space_len
,
3071 pattern
, pattern_len
, found_addrp
);
3075 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
3080 /* Look through the currently pushed targets. If none of them will
3081 be able to restart the currently running process, issue an error
3085 target_require_runnable (void)
3087 struct target_ops
*t
;
3089 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3091 /* If this target knows how to create a new program, then
3092 assume we will still be able to after killing the current
3093 one. Either killing and mourning will not pop T, or else
3094 find_default_run_target will find it again. */
3095 if (t
->to_create_inferior
!= NULL
)
3098 /* Do not worry about thread_stratum targets that can not
3099 create inferiors. Assume they will be pushed again if
3100 necessary, and continue to the process_stratum. */
3101 if (t
->to_stratum
== thread_stratum
3102 || t
->to_stratum
== arch_stratum
)
3105 error (_("The \"%s\" target does not support \"run\". "
3106 "Try \"help target\" or \"continue\"."),
3110 /* This function is only called if the target is running. In that
3111 case there should have been a process_stratum target and it
3112 should either know how to create inferiors, or not... */
3113 internal_error (__FILE__
, __LINE__
, _("No targets found"));
3116 /* Look through the list of possible targets for a target that can
3117 execute a run or attach command without any other data. This is
3118 used to locate the default process stratum.
3120 If DO_MESG is not NULL, the result is always valid (error() is
3121 called for errors); else, return NULL on error. */
3123 static struct target_ops
*
3124 find_default_run_target (char *do_mesg
)
3126 struct target_ops
**t
;
3127 struct target_ops
*runable
= NULL
;
3132 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3135 if ((*t
)->to_can_run
&& target_can_run (*t
))
3145 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3154 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3156 struct target_ops
*t
;
3158 t
= find_default_run_target ("attach");
3159 (t
->to_attach
) (t
, args
, from_tty
);
3164 find_default_create_inferior (struct target_ops
*ops
,
3165 char *exec_file
, char *allargs
, char **env
,
3168 struct target_ops
*t
;
3170 t
= find_default_run_target ("run");
3171 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3176 find_default_can_async_p (void)
3178 struct target_ops
*t
;
3180 /* This may be called before the target is pushed on the stack;
3181 look for the default process stratum. If there's none, gdb isn't
3182 configured with a native debugger, and target remote isn't
3184 t
= find_default_run_target (NULL
);
3185 if (t
&& t
->to_can_async_p
)
3186 return (t
->to_can_async_p
) ();
3191 find_default_is_async_p (void)
3193 struct target_ops
*t
;
3195 /* This may be called before the target is pushed on the stack;
3196 look for the default process stratum. If there's none, gdb isn't
3197 configured with a native debugger, and target remote isn't
3199 t
= find_default_run_target (NULL
);
3200 if (t
&& t
->to_is_async_p
)
3201 return (t
->to_is_async_p
) ();
3206 find_default_supports_non_stop (void)
3208 struct target_ops
*t
;
3210 t
= find_default_run_target (NULL
);
3211 if (t
&& t
->to_supports_non_stop
)
3212 return (t
->to_supports_non_stop
) ();
3217 target_supports_non_stop (void)
3219 struct target_ops
*t
;
3221 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3222 if (t
->to_supports_non_stop
)
3223 return t
->to_supports_non_stop ();
3228 /* Implement the "info proc" command. */
3231 target_info_proc (char *args
, enum info_proc_what what
)
3233 struct target_ops
*t
;
3235 /* If we're already connected to something that can get us OS
3236 related data, use it. Otherwise, try using the native
3238 if (current_target
.to_stratum
>= process_stratum
)
3239 t
= current_target
.beneath
;
3241 t
= find_default_run_target (NULL
);
3243 for (; t
!= NULL
; t
= t
->beneath
)
3245 if (t
->to_info_proc
!= NULL
)
3247 t
->to_info_proc (t
, args
, what
);
3250 fprintf_unfiltered (gdb_stdlog
,
3251 "target_info_proc (\"%s\", %d)\n", args
, what
);
3261 find_default_supports_disable_randomization (void)
3263 struct target_ops
*t
;
3265 t
= find_default_run_target (NULL
);
3266 if (t
&& t
->to_supports_disable_randomization
)
3267 return (t
->to_supports_disable_randomization
) ();
3272 target_supports_disable_randomization (void)
3274 struct target_ops
*t
;
3276 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3277 if (t
->to_supports_disable_randomization
)
3278 return t
->to_supports_disable_randomization ();
3284 target_get_osdata (const char *type
)
3286 struct target_ops
*t
;
3288 /* If we're already connected to something that can get us OS
3289 related data, use it. Otherwise, try using the native
3291 if (current_target
.to_stratum
>= process_stratum
)
3292 t
= current_target
.beneath
;
3294 t
= find_default_run_target ("get OS data");
3299 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3302 /* Determine the current address space of thread PTID. */
3304 struct address_space
*
3305 target_thread_address_space (ptid_t ptid
)
3307 struct address_space
*aspace
;
3308 struct inferior
*inf
;
3309 struct target_ops
*t
;
3311 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3313 if (t
->to_thread_address_space
!= NULL
)
3315 aspace
= t
->to_thread_address_space (t
, ptid
);
3316 gdb_assert (aspace
);
3319 fprintf_unfiltered (gdb_stdlog
,
3320 "target_thread_address_space (%s) = %d\n",
3321 target_pid_to_str (ptid
),
3322 address_space_num (aspace
));
3327 /* Fall-back to the "main" address space of the inferior. */
3328 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3330 if (inf
== NULL
|| inf
->aspace
== NULL
)
3331 internal_error (__FILE__
, __LINE__
,
3332 _("Can't determine the current "
3333 "address space of thread %s\n"),
3334 target_pid_to_str (ptid
));
3340 /* Target file operations. */
3342 static struct target_ops
*
3343 default_fileio_target (void)
3345 /* If we're already connected to something that can perform
3346 file I/O, use it. Otherwise, try using the native target. */
3347 if (current_target
.to_stratum
>= process_stratum
)
3348 return current_target
.beneath
;
3350 return find_default_run_target ("file I/O");
3353 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3354 target file descriptor, or -1 if an error occurs (and set
3357 target_fileio_open (const char *filename
, int flags
, int mode
,
3360 struct target_ops
*t
;
3362 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3364 if (t
->to_fileio_open
!= NULL
)
3366 int fd
= t
->to_fileio_open (filename
, flags
, mode
, target_errno
);
3369 fprintf_unfiltered (gdb_stdlog
,
3370 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3371 filename
, flags
, mode
,
3372 fd
, fd
!= -1 ? 0 : *target_errno
);
3377 *target_errno
= FILEIO_ENOSYS
;
3381 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3382 Return the number of bytes written, or -1 if an error occurs
3383 (and set *TARGET_ERRNO). */
3385 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3386 ULONGEST offset
, int *target_errno
)
3388 struct target_ops
*t
;
3390 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3392 if (t
->to_fileio_pwrite
!= NULL
)
3394 int ret
= t
->to_fileio_pwrite (fd
, write_buf
, len
, offset
,
3398 fprintf_unfiltered (gdb_stdlog
,
3399 "target_fileio_pwrite (%d,...,%d,%s) "
3401 fd
, len
, pulongest (offset
),
3402 ret
, ret
!= -1 ? 0 : *target_errno
);
3407 *target_errno
= FILEIO_ENOSYS
;
3411 /* Read up to LEN bytes FD on the target into READ_BUF.
3412 Return the number of bytes read, or -1 if an error occurs
3413 (and set *TARGET_ERRNO). */
3415 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3416 ULONGEST offset
, int *target_errno
)
3418 struct target_ops
*t
;
3420 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3422 if (t
->to_fileio_pread
!= NULL
)
3424 int ret
= t
->to_fileio_pread (fd
, read_buf
, len
, offset
,
3428 fprintf_unfiltered (gdb_stdlog
,
3429 "target_fileio_pread (%d,...,%d,%s) "
3431 fd
, len
, pulongest (offset
),
3432 ret
, ret
!= -1 ? 0 : *target_errno
);
3437 *target_errno
= FILEIO_ENOSYS
;
3441 /* Close FD on the target. Return 0, or -1 if an error occurs
3442 (and set *TARGET_ERRNO). */
3444 target_fileio_close (int fd
, int *target_errno
)
3446 struct target_ops
*t
;
3448 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3450 if (t
->to_fileio_close
!= NULL
)
3452 int ret
= t
->to_fileio_close (fd
, target_errno
);
3455 fprintf_unfiltered (gdb_stdlog
,
3456 "target_fileio_close (%d) = %d (%d)\n",
3457 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3462 *target_errno
= FILEIO_ENOSYS
;
3466 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3467 occurs (and set *TARGET_ERRNO). */
3469 target_fileio_unlink (const char *filename
, int *target_errno
)
3471 struct target_ops
*t
;
3473 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3475 if (t
->to_fileio_unlink
!= NULL
)
3477 int ret
= t
->to_fileio_unlink (filename
, target_errno
);
3480 fprintf_unfiltered (gdb_stdlog
,
3481 "target_fileio_unlink (%s) = %d (%d)\n",
3482 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3487 *target_errno
= FILEIO_ENOSYS
;
3491 /* Read value of symbolic link FILENAME on the target. Return a
3492 null-terminated string allocated via xmalloc, or NULL if an error
3493 occurs (and set *TARGET_ERRNO). */
3495 target_fileio_readlink (const char *filename
, int *target_errno
)
3497 struct target_ops
*t
;
3499 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3501 if (t
->to_fileio_readlink
!= NULL
)
3503 char *ret
= t
->to_fileio_readlink (filename
, target_errno
);
3506 fprintf_unfiltered (gdb_stdlog
,
3507 "target_fileio_readlink (%s) = %s (%d)\n",
3508 filename
, ret
? ret
: "(nil)",
3509 ret
? 0 : *target_errno
);
3514 *target_errno
= FILEIO_ENOSYS
;
3519 target_fileio_close_cleanup (void *opaque
)
3521 int fd
= *(int *) opaque
;
3524 target_fileio_close (fd
, &target_errno
);
3527 /* Read target file FILENAME. Store the result in *BUF_P and
3528 return the size of the transferred data. PADDING additional bytes are
3529 available in *BUF_P. This is a helper function for
3530 target_fileio_read_alloc; see the declaration of that function for more
3534 target_fileio_read_alloc_1 (const char *filename
,
3535 gdb_byte
**buf_p
, int padding
)
3537 struct cleanup
*close_cleanup
;
3538 size_t buf_alloc
, buf_pos
;
3544 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3548 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3550 /* Start by reading up to 4K at a time. The target will throttle
3551 this number down if necessary. */
3553 buf
= xmalloc (buf_alloc
);
3557 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3558 buf_alloc
- buf_pos
- padding
, buf_pos
,
3562 /* An error occurred. */
3563 do_cleanups (close_cleanup
);
3569 /* Read all there was. */
3570 do_cleanups (close_cleanup
);
3580 /* If the buffer is filling up, expand it. */
3581 if (buf_alloc
< buf_pos
* 2)
3584 buf
= xrealloc (buf
, buf_alloc
);
3591 /* Read target file FILENAME. Store the result in *BUF_P and return
3592 the size of the transferred data. See the declaration in "target.h"
3593 function for more information about the return value. */
3596 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3598 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3601 /* Read target file FILENAME. The result is NUL-terminated and
3602 returned as a string, allocated using xmalloc. If an error occurs
3603 or the transfer is unsupported, NULL is returned. Empty objects
3604 are returned as allocated but empty strings. A warning is issued
3605 if the result contains any embedded NUL bytes. */
3608 target_fileio_read_stralloc (const char *filename
)
3612 LONGEST i
, transferred
;
3614 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3615 bufstr
= (char *) buffer
;
3617 if (transferred
< 0)
3620 if (transferred
== 0)
3621 return xstrdup ("");
3623 bufstr
[transferred
] = 0;
3625 /* Check for embedded NUL bytes; but allow trailing NULs. */
3626 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3629 warning (_("target file %s "
3630 "contained unexpected null characters"),
3640 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3642 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3646 default_watchpoint_addr_within_range (struct target_ops
*target
,
3648 CORE_ADDR start
, int length
)
3650 return addr
>= start
&& addr
< start
+ length
;
3653 static struct gdbarch
*
3654 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3656 return target_gdbarch ();
3672 return_minus_one (void)
3678 * Find the next target down the stack from the specified target.
3682 find_target_beneath (struct target_ops
*t
)
3688 /* The inferior process has died. Long live the inferior! */
3691 generic_mourn_inferior (void)
3695 ptid
= inferior_ptid
;
3696 inferior_ptid
= null_ptid
;
3698 /* Mark breakpoints uninserted in case something tries to delete a
3699 breakpoint while we delete the inferior's threads (which would
3700 fail, since the inferior is long gone). */
3701 mark_breakpoints_out ();
3703 if (!ptid_equal (ptid
, null_ptid
))
3705 int pid
= ptid_get_pid (ptid
);
3706 exit_inferior (pid
);
3709 /* Note this wipes step-resume breakpoints, so needs to be done
3710 after exit_inferior, which ends up referencing the step-resume
3711 breakpoints through clear_thread_inferior_resources. */
3712 breakpoint_init_inferior (inf_exited
);
3714 registers_changed ();
3716 reopen_exec_file ();
3717 reinit_frame_cache ();
3719 if (deprecated_detach_hook
)
3720 deprecated_detach_hook ();
3723 /* Convert a normal process ID to a string. Returns the string in a
3727 normal_pid_to_str (ptid_t ptid
)
3729 static char buf
[32];
3731 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3736 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3738 return normal_pid_to_str (ptid
);
3741 /* Error-catcher for target_find_memory_regions. */
3743 dummy_find_memory_regions (find_memory_region_ftype ignore1
, void *ignore2
)
3745 error (_("Command not implemented for this target."));
3749 /* Error-catcher for target_make_corefile_notes. */
3751 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
3753 error (_("Command not implemented for this target."));
3757 /* Error-catcher for target_get_bookmark. */
3759 dummy_get_bookmark (char *ignore1
, int ignore2
)
3765 /* Error-catcher for target_goto_bookmark. */
3767 dummy_goto_bookmark (gdb_byte
*ignore
, int from_tty
)
3772 /* Set up the handful of non-empty slots needed by the dummy target
3776 init_dummy_target (void)
3778 dummy_target
.to_shortname
= "None";
3779 dummy_target
.to_longname
= "None";
3780 dummy_target
.to_doc
= "";
3781 dummy_target
.to_attach
= find_default_attach
;
3782 dummy_target
.to_detach
=
3783 (void (*)(struct target_ops
*, const char *, int))target_ignore
;
3784 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3785 dummy_target
.to_can_async_p
= find_default_can_async_p
;
3786 dummy_target
.to_is_async_p
= find_default_is_async_p
;
3787 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3788 dummy_target
.to_supports_disable_randomization
3789 = find_default_supports_disable_randomization
;
3790 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3791 dummy_target
.to_stratum
= dummy_stratum
;
3792 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
3793 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
3794 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
3795 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
3796 dummy_target
.to_xfer_partial
= default_xfer_partial
;
3797 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3798 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3799 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3800 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3801 dummy_target
.to_has_execution
3802 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3803 dummy_target
.to_stopped_by_watchpoint
= return_zero
;
3804 dummy_target
.to_stopped_data_address
=
3805 (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
;
3806 dummy_target
.to_magic
= OPS_MAGIC
;
3810 debug_to_open (char *args
, int from_tty
)
3812 debug_target
.to_open (args
, from_tty
);
3814 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3818 target_close (struct target_ops
*targ
)
3820 gdb_assert (!target_is_pushed (targ
));
3822 if (targ
->to_xclose
!= NULL
)
3823 targ
->to_xclose (targ
);
3824 else if (targ
->to_close
!= NULL
)
3828 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3832 target_attach (char *args
, int from_tty
)
3834 struct target_ops
*t
;
3836 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3838 if (t
->to_attach
!= NULL
)
3840 t
->to_attach (t
, args
, from_tty
);
3842 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3848 internal_error (__FILE__
, __LINE__
,
3849 _("could not find a target to attach"));
3853 target_thread_alive (ptid_t ptid
)
3855 struct target_ops
*t
;
3857 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3859 if (t
->to_thread_alive
!= NULL
)
3863 retval
= t
->to_thread_alive (t
, ptid
);
3865 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3866 ptid_get_pid (ptid
), retval
);
3876 target_find_new_threads (void)
3878 struct target_ops
*t
;
3880 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3882 if (t
->to_find_new_threads
!= NULL
)
3884 t
->to_find_new_threads (t
);
3886 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3894 target_stop (ptid_t ptid
)
3898 warning (_("May not interrupt or stop the target, ignoring attempt"));
3902 (*current_target
.to_stop
) (ptid
);
3906 debug_to_post_attach (int pid
)
3908 debug_target
.to_post_attach (pid
);
3910 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3913 /* Concatenate ELEM to LIST, a comma separate list, and return the
3914 result. The LIST incoming argument is released. */
3917 str_comma_list_concat_elem (char *list
, const char *elem
)
3920 return xstrdup (elem
);
3922 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3925 /* Helper for target_options_to_string. If OPT is present in
3926 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3927 Returns the new resulting string. OPT is removed from
3931 do_option (int *target_options
, char *ret
,
3932 int opt
, char *opt_str
)
3934 if ((*target_options
& opt
) != 0)
3936 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3937 *target_options
&= ~opt
;
3944 target_options_to_string (int target_options
)
3948 #define DO_TARG_OPTION(OPT) \
3949 ret = do_option (&target_options, ret, OPT, #OPT)
3951 DO_TARG_OPTION (TARGET_WNOHANG
);
3953 if (target_options
!= 0)
3954 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3962 debug_print_register (const char * func
,
3963 struct regcache
*regcache
, int regno
)
3965 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3967 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3968 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3969 && gdbarch_register_name (gdbarch
, regno
) != NULL
3970 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3971 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3972 gdbarch_register_name (gdbarch
, regno
));
3974 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3975 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3977 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3978 int i
, size
= register_size (gdbarch
, regno
);
3979 gdb_byte buf
[MAX_REGISTER_SIZE
];
3981 regcache_raw_collect (regcache
, regno
, buf
);
3982 fprintf_unfiltered (gdb_stdlog
, " = ");
3983 for (i
= 0; i
< size
; i
++)
3985 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3987 if (size
<= sizeof (LONGEST
))
3989 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3991 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3992 core_addr_to_string_nz (val
), plongest (val
));
3995 fprintf_unfiltered (gdb_stdlog
, "\n");
3999 target_fetch_registers (struct regcache
*regcache
, int regno
)
4001 struct target_ops
*t
;
4003 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4005 if (t
->to_fetch_registers
!= NULL
)
4007 t
->to_fetch_registers (t
, regcache
, regno
);
4009 debug_print_register ("target_fetch_registers", regcache
, regno
);
4016 target_store_registers (struct regcache
*regcache
, int regno
)
4018 struct target_ops
*t
;
4020 if (!may_write_registers
)
4021 error (_("Writing to registers is not allowed (regno %d)"), regno
);
4023 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4025 if (t
->to_store_registers
!= NULL
)
4027 t
->to_store_registers (t
, regcache
, regno
);
4030 debug_print_register ("target_store_registers", regcache
, regno
);
4040 target_core_of_thread (ptid_t ptid
)
4042 struct target_ops
*t
;
4044 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4046 if (t
->to_core_of_thread
!= NULL
)
4048 int retval
= t
->to_core_of_thread (t
, ptid
);
4051 fprintf_unfiltered (gdb_stdlog
,
4052 "target_core_of_thread (%d) = %d\n",
4053 ptid_get_pid (ptid
), retval
);
4062 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
4064 struct target_ops
*t
;
4066 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4068 if (t
->to_verify_memory
!= NULL
)
4070 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
4073 fprintf_unfiltered (gdb_stdlog
,
4074 "target_verify_memory (%s, %s) = %d\n",
4075 paddress (target_gdbarch (), memaddr
),
4085 /* The documentation for this function is in its prototype declaration in
4089 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4091 struct target_ops
*t
;
4093 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4094 if (t
->to_insert_mask_watchpoint
!= NULL
)
4098 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
4101 fprintf_unfiltered (gdb_stdlog
, "\
4102 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
4103 core_addr_to_string (addr
),
4104 core_addr_to_string (mask
), rw
, ret
);
4112 /* The documentation for this function is in its prototype declaration in
4116 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4118 struct target_ops
*t
;
4120 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4121 if (t
->to_remove_mask_watchpoint
!= NULL
)
4125 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
4128 fprintf_unfiltered (gdb_stdlog
, "\
4129 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
4130 core_addr_to_string (addr
),
4131 core_addr_to_string (mask
), rw
, ret
);
4139 /* The documentation for this function is in its prototype declaration
4143 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4145 struct target_ops
*t
;
4147 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4148 if (t
->to_masked_watch_num_registers
!= NULL
)
4149 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4154 /* The documentation for this function is in its prototype declaration
4158 target_ranged_break_num_registers (void)
4160 struct target_ops
*t
;
4162 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4163 if (t
->to_ranged_break_num_registers
!= NULL
)
4164 return t
->to_ranged_break_num_registers (t
);
4172 target_supports_btrace (void)
4174 struct target_ops
*t
;
4176 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4177 if (t
->to_supports_btrace
!= NULL
)
4178 return t
->to_supports_btrace ();
4185 struct btrace_target_info
*
4186 target_enable_btrace (ptid_t ptid
)
4188 struct target_ops
*t
;
4190 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4191 if (t
->to_enable_btrace
!= NULL
)
4192 return t
->to_enable_btrace (ptid
);
4201 target_disable_btrace (struct btrace_target_info
*btinfo
)
4203 struct target_ops
*t
;
4205 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4206 if (t
->to_disable_btrace
!= NULL
)
4208 t
->to_disable_btrace (btinfo
);
4218 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4220 struct target_ops
*t
;
4222 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4223 if (t
->to_teardown_btrace
!= NULL
)
4225 t
->to_teardown_btrace (btinfo
);
4234 VEC (btrace_block_s
) *
4235 target_read_btrace (struct btrace_target_info
*btinfo
,
4236 enum btrace_read_type type
)
4238 struct target_ops
*t
;
4240 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4241 if (t
->to_read_btrace
!= NULL
)
4242 return t
->to_read_btrace (btinfo
, type
);
4251 target_stop_recording (void)
4253 struct target_ops
*t
;
4255 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4256 if (t
->to_stop_recording
!= NULL
)
4258 t
->to_stop_recording ();
4262 /* This is optional. */
4268 target_info_record (void)
4270 struct target_ops
*t
;
4272 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4273 if (t
->to_info_record
!= NULL
)
4275 t
->to_info_record ();
4285 target_save_record (const char *filename
)
4287 struct target_ops
*t
;
4289 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4290 if (t
->to_save_record
!= NULL
)
4292 t
->to_save_record (filename
);
4302 target_supports_delete_record (void)
4304 struct target_ops
*t
;
4306 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4307 if (t
->to_delete_record
!= NULL
)
4316 target_delete_record (void)
4318 struct target_ops
*t
;
4320 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4321 if (t
->to_delete_record
!= NULL
)
4323 t
->to_delete_record ();
4333 target_record_is_replaying (void)
4335 struct target_ops
*t
;
4337 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4338 if (t
->to_record_is_replaying
!= NULL
)
4339 return t
->to_record_is_replaying ();
4347 target_goto_record_begin (void)
4349 struct target_ops
*t
;
4351 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4352 if (t
->to_goto_record_begin
!= NULL
)
4354 t
->to_goto_record_begin ();
4364 target_goto_record_end (void)
4366 struct target_ops
*t
;
4368 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4369 if (t
->to_goto_record_end
!= NULL
)
4371 t
->to_goto_record_end ();
4381 target_goto_record (ULONGEST insn
)
4383 struct target_ops
*t
;
4385 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4386 if (t
->to_goto_record
!= NULL
)
4388 t
->to_goto_record (insn
);
4398 target_insn_history (int size
, int flags
)
4400 struct target_ops
*t
;
4402 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4403 if (t
->to_insn_history
!= NULL
)
4405 t
->to_insn_history (size
, flags
);
4415 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4417 struct target_ops
*t
;
4419 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4420 if (t
->to_insn_history_from
!= NULL
)
4422 t
->to_insn_history_from (from
, size
, flags
);
4432 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4434 struct target_ops
*t
;
4436 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4437 if (t
->to_insn_history_range
!= NULL
)
4439 t
->to_insn_history_range (begin
, end
, flags
);
4449 target_call_history (int size
, int flags
)
4451 struct target_ops
*t
;
4453 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4454 if (t
->to_call_history
!= NULL
)
4456 t
->to_call_history (size
, flags
);
4466 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4468 struct target_ops
*t
;
4470 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4471 if (t
->to_call_history_from
!= NULL
)
4473 t
->to_call_history_from (begin
, size
, flags
);
4483 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4485 struct target_ops
*t
;
4487 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4488 if (t
->to_call_history_range
!= NULL
)
4490 t
->to_call_history_range (begin
, end
, flags
);
4498 debug_to_prepare_to_store (struct regcache
*regcache
)
4500 debug_target
.to_prepare_to_store (regcache
);
4502 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4506 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4507 int write
, struct mem_attrib
*attrib
,
4508 struct target_ops
*target
)
4512 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4515 fprintf_unfiltered (gdb_stdlog
,
4516 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4517 paddress (target_gdbarch (), memaddr
), len
,
4518 write
? "write" : "read", retval
);
4524 fputs_unfiltered (", bytes =", gdb_stdlog
);
4525 for (i
= 0; i
< retval
; i
++)
4527 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4529 if (targetdebug
< 2 && i
> 0)
4531 fprintf_unfiltered (gdb_stdlog
, " ...");
4534 fprintf_unfiltered (gdb_stdlog
, "\n");
4537 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4541 fputc_unfiltered ('\n', gdb_stdlog
);
4547 debug_to_files_info (struct target_ops
*target
)
4549 debug_target
.to_files_info (target
);
4551 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4555 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
4556 struct bp_target_info
*bp_tgt
)
4560 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
4562 fprintf_unfiltered (gdb_stdlog
,
4563 "target_insert_breakpoint (%s, xxx) = %ld\n",
4564 core_addr_to_string (bp_tgt
->placed_address
),
4565 (unsigned long) retval
);
4570 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
4571 struct bp_target_info
*bp_tgt
)
4575 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
4577 fprintf_unfiltered (gdb_stdlog
,
4578 "target_remove_breakpoint (%s, xxx) = %ld\n",
4579 core_addr_to_string (bp_tgt
->placed_address
),
4580 (unsigned long) retval
);
4585 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
4589 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
4591 fprintf_unfiltered (gdb_stdlog
,
4592 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4593 (unsigned long) type
,
4594 (unsigned long) cnt
,
4595 (unsigned long) from_tty
,
4596 (unsigned long) retval
);
4601 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
4605 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
4607 fprintf_unfiltered (gdb_stdlog
,
4608 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4609 core_addr_to_string (addr
), (unsigned long) len
,
4610 core_addr_to_string (retval
));
4615 debug_to_can_accel_watchpoint_condition (CORE_ADDR addr
, int len
, int rw
,
4616 struct expression
*cond
)
4620 retval
= debug_target
.to_can_accel_watchpoint_condition (addr
, len
,
4623 fprintf_unfiltered (gdb_stdlog
,
4624 "target_can_accel_watchpoint_condition "
4625 "(%s, %d, %d, %s) = %ld\n",
4626 core_addr_to_string (addr
), len
, rw
,
4627 host_address_to_string (cond
), (unsigned long) retval
);
4632 debug_to_stopped_by_watchpoint (void)
4636 retval
= debug_target
.to_stopped_by_watchpoint ();
4638 fprintf_unfiltered (gdb_stdlog
,
4639 "target_stopped_by_watchpoint () = %ld\n",
4640 (unsigned long) retval
);
4645 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4649 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4651 fprintf_unfiltered (gdb_stdlog
,
4652 "target_stopped_data_address ([%s]) = %ld\n",
4653 core_addr_to_string (*addr
),
4654 (unsigned long)retval
);
4659 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4661 CORE_ADDR start
, int length
)
4665 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4668 fprintf_filtered (gdb_stdlog
,
4669 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4670 core_addr_to_string (addr
), core_addr_to_string (start
),
4676 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
4677 struct bp_target_info
*bp_tgt
)
4681 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
4683 fprintf_unfiltered (gdb_stdlog
,
4684 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4685 core_addr_to_string (bp_tgt
->placed_address
),
4686 (unsigned long) retval
);
4691 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
4692 struct bp_target_info
*bp_tgt
)
4696 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
4698 fprintf_unfiltered (gdb_stdlog
,
4699 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4700 core_addr_to_string (bp_tgt
->placed_address
),
4701 (unsigned long) retval
);
4706 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
4707 struct expression
*cond
)
4711 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
, cond
);
4713 fprintf_unfiltered (gdb_stdlog
,
4714 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4715 core_addr_to_string (addr
), len
, type
,
4716 host_address_to_string (cond
), (unsigned long) retval
);
4721 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
4722 struct expression
*cond
)
4726 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
, cond
);
4728 fprintf_unfiltered (gdb_stdlog
,
4729 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4730 core_addr_to_string (addr
), len
, type
,
4731 host_address_to_string (cond
), (unsigned long) retval
);
4736 debug_to_terminal_init (void)
4738 debug_target
.to_terminal_init ();
4740 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4744 debug_to_terminal_inferior (void)
4746 debug_target
.to_terminal_inferior ();
4748 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4752 debug_to_terminal_ours_for_output (void)
4754 debug_target
.to_terminal_ours_for_output ();
4756 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4760 debug_to_terminal_ours (void)
4762 debug_target
.to_terminal_ours ();
4764 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4768 debug_to_terminal_save_ours (void)
4770 debug_target
.to_terminal_save_ours ();
4772 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4776 debug_to_terminal_info (const char *arg
, int from_tty
)
4778 debug_target
.to_terminal_info (arg
, from_tty
);
4780 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4785 debug_to_load (char *args
, int from_tty
)
4787 debug_target
.to_load (args
, from_tty
);
4789 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4793 debug_to_post_startup_inferior (ptid_t ptid
)
4795 debug_target
.to_post_startup_inferior (ptid
);
4797 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4798 ptid_get_pid (ptid
));
4802 debug_to_insert_fork_catchpoint (int pid
)
4806 retval
= debug_target
.to_insert_fork_catchpoint (pid
);
4808 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4815 debug_to_remove_fork_catchpoint (int pid
)
4819 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
4821 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4828 debug_to_insert_vfork_catchpoint (int pid
)
4832 retval
= debug_target
.to_insert_vfork_catchpoint (pid
);
4834 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4841 debug_to_remove_vfork_catchpoint (int pid
)
4845 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
4847 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4854 debug_to_insert_exec_catchpoint (int pid
)
4858 retval
= debug_target
.to_insert_exec_catchpoint (pid
);
4860 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4867 debug_to_remove_exec_catchpoint (int pid
)
4871 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
4873 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4880 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
4884 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
4886 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4887 pid
, wait_status
, *exit_status
, has_exited
);
4893 debug_to_can_run (void)
4897 retval
= debug_target
.to_can_run ();
4899 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4904 static struct gdbarch
*
4905 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4907 struct gdbarch
*retval
;
4909 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4911 fprintf_unfiltered (gdb_stdlog
,
4912 "target_thread_architecture (%s) = %s [%s]\n",
4913 target_pid_to_str (ptid
),
4914 host_address_to_string (retval
),
4915 gdbarch_bfd_arch_info (retval
)->printable_name
);
4920 debug_to_stop (ptid_t ptid
)
4922 debug_target
.to_stop (ptid
);
4924 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4925 target_pid_to_str (ptid
));
4929 debug_to_rcmd (char *command
,
4930 struct ui_file
*outbuf
)
4932 debug_target
.to_rcmd (command
, outbuf
);
4933 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4937 debug_to_pid_to_exec_file (int pid
)
4941 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
4943 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4950 setup_target_debug (void)
4952 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4954 current_target
.to_open
= debug_to_open
;
4955 current_target
.to_post_attach
= debug_to_post_attach
;
4956 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4957 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4958 current_target
.to_files_info
= debug_to_files_info
;
4959 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4960 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4961 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4962 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4963 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4964 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4965 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4966 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4967 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4968 current_target
.to_watchpoint_addr_within_range
4969 = debug_to_watchpoint_addr_within_range
;
4970 current_target
.to_region_ok_for_hw_watchpoint
4971 = debug_to_region_ok_for_hw_watchpoint
;
4972 current_target
.to_can_accel_watchpoint_condition
4973 = debug_to_can_accel_watchpoint_condition
;
4974 current_target
.to_terminal_init
= debug_to_terminal_init
;
4975 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4976 current_target
.to_terminal_ours_for_output
4977 = debug_to_terminal_ours_for_output
;
4978 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4979 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4980 current_target
.to_terminal_info
= debug_to_terminal_info
;
4981 current_target
.to_load
= debug_to_load
;
4982 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4983 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4984 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4985 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4986 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4987 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4988 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4989 current_target
.to_has_exited
= debug_to_has_exited
;
4990 current_target
.to_can_run
= debug_to_can_run
;
4991 current_target
.to_stop
= debug_to_stop
;
4992 current_target
.to_rcmd
= debug_to_rcmd
;
4993 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4994 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4998 static char targ_desc
[] =
4999 "Names of targets and files being debugged.\nShows the entire \
5000 stack of targets currently in use (including the exec-file,\n\
5001 core-file, and process, if any), as well as the symbol file name.";
5004 do_monitor_command (char *cmd
,
5007 if ((current_target
.to_rcmd
5008 == (void (*) (char *, struct ui_file
*)) tcomplain
)
5009 || (current_target
.to_rcmd
== debug_to_rcmd
5010 && (debug_target
.to_rcmd
5011 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
5012 error (_("\"monitor\" command not supported by this target."));
5013 target_rcmd (cmd
, gdb_stdtarg
);
5016 /* Print the name of each layers of our target stack. */
5019 maintenance_print_target_stack (char *cmd
, int from_tty
)
5021 struct target_ops
*t
;
5023 printf_filtered (_("The current target stack is:\n"));
5025 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
5027 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
5031 /* Controls if async mode is permitted. */
5032 int target_async_permitted
= 0;
5034 /* The set command writes to this variable. If the inferior is
5035 executing, target_async_permitted is *not* updated. */
5036 static int target_async_permitted_1
= 0;
5039 set_target_async_command (char *args
, int from_tty
,
5040 struct cmd_list_element
*c
)
5042 if (have_live_inferiors ())
5044 target_async_permitted_1
= target_async_permitted
;
5045 error (_("Cannot change this setting while the inferior is running."));
5048 target_async_permitted
= target_async_permitted_1
;
5052 show_target_async_command (struct ui_file
*file
, int from_tty
,
5053 struct cmd_list_element
*c
,
5056 fprintf_filtered (file
,
5057 _("Controlling the inferior in "
5058 "asynchronous mode is %s.\n"), value
);
5061 /* Temporary copies of permission settings. */
5063 static int may_write_registers_1
= 1;
5064 static int may_write_memory_1
= 1;
5065 static int may_insert_breakpoints_1
= 1;
5066 static int may_insert_tracepoints_1
= 1;
5067 static int may_insert_fast_tracepoints_1
= 1;
5068 static int may_stop_1
= 1;
5070 /* Make the user-set values match the real values again. */
5073 update_target_permissions (void)
5075 may_write_registers_1
= may_write_registers
;
5076 may_write_memory_1
= may_write_memory
;
5077 may_insert_breakpoints_1
= may_insert_breakpoints
;
5078 may_insert_tracepoints_1
= may_insert_tracepoints
;
5079 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
5080 may_stop_1
= may_stop
;
5083 /* The one function handles (most of) the permission flags in the same
5087 set_target_permissions (char *args
, int from_tty
,
5088 struct cmd_list_element
*c
)
5090 if (target_has_execution
)
5092 update_target_permissions ();
5093 error (_("Cannot change this setting while the inferior is running."));
5096 /* Make the real values match the user-changed values. */
5097 may_write_registers
= may_write_registers_1
;
5098 may_insert_breakpoints
= may_insert_breakpoints_1
;
5099 may_insert_tracepoints
= may_insert_tracepoints_1
;
5100 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
5101 may_stop
= may_stop_1
;
5102 update_observer_mode ();
5105 /* Set memory write permission independently of observer mode. */
5108 set_write_memory_permission (char *args
, int from_tty
,
5109 struct cmd_list_element
*c
)
5111 /* Make the real values match the user-changed values. */
5112 may_write_memory
= may_write_memory_1
;
5113 update_observer_mode ();
5118 initialize_targets (void)
5120 init_dummy_target ();
5121 push_target (&dummy_target
);
5123 add_info ("target", target_info
, targ_desc
);
5124 add_info ("files", target_info
, targ_desc
);
5126 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
5127 Set target debugging."), _("\
5128 Show target debugging."), _("\
5129 When non-zero, target debugging is enabled. Higher numbers are more\n\
5130 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
5134 &setdebuglist
, &showdebuglist
);
5136 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
5137 &trust_readonly
, _("\
5138 Set mode for reading from readonly sections."), _("\
5139 Show mode for reading from readonly sections."), _("\
5140 When this mode is on, memory reads from readonly sections (such as .text)\n\
5141 will be read from the object file instead of from the target. This will\n\
5142 result in significant performance improvement for remote targets."),
5144 show_trust_readonly
,
5145 &setlist
, &showlist
);
5147 add_com ("monitor", class_obscure
, do_monitor_command
,
5148 _("Send a command to the remote monitor (remote targets only)."));
5150 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5151 _("Print the name of each layer of the internal target stack."),
5152 &maintenanceprintlist
);
5154 add_setshow_boolean_cmd ("target-async", no_class
,
5155 &target_async_permitted_1
, _("\
5156 Set whether gdb controls the inferior in asynchronous mode."), _("\
5157 Show whether gdb controls the inferior in asynchronous mode."), _("\
5158 Tells gdb whether to control the inferior in asynchronous mode."),
5159 set_target_async_command
,
5160 show_target_async_command
,
5164 add_setshow_boolean_cmd ("stack-cache", class_support
,
5165 &stack_cache_enabled_p_1
, _("\
5166 Set cache use for stack access."), _("\
5167 Show cache use for stack access."), _("\
5168 When on, use the data cache for all stack access, regardless of any\n\
5169 configured memory regions. This improves remote performance significantly.\n\
5170 By default, caching for stack access is on."),
5171 set_stack_cache_enabled_p
,
5172 show_stack_cache_enabled_p
,
5173 &setlist
, &showlist
);
5175 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5176 &may_write_registers_1
, _("\
5177 Set permission to write into registers."), _("\
5178 Show permission to write into registers."), _("\
5179 When this permission is on, GDB may write into the target's registers.\n\
5180 Otherwise, any sort of write attempt will result in an error."),
5181 set_target_permissions
, NULL
,
5182 &setlist
, &showlist
);
5184 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5185 &may_write_memory_1
, _("\
5186 Set permission to write into target memory."), _("\
5187 Show permission to write into target memory."), _("\
5188 When this permission is on, GDB may write into the target's memory.\n\
5189 Otherwise, any sort of write attempt will result in an error."),
5190 set_write_memory_permission
, NULL
,
5191 &setlist
, &showlist
);
5193 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5194 &may_insert_breakpoints_1
, _("\
5195 Set permission to insert breakpoints in the target."), _("\
5196 Show permission to insert breakpoints in the target."), _("\
5197 When this permission is on, GDB may insert breakpoints in the program.\n\
5198 Otherwise, any sort of insertion attempt will result in an error."),
5199 set_target_permissions
, NULL
,
5200 &setlist
, &showlist
);
5202 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5203 &may_insert_tracepoints_1
, _("\
5204 Set permission to insert tracepoints in the target."), _("\
5205 Show permission to insert tracepoints in the target."), _("\
5206 When this permission is on, GDB may insert tracepoints in the program.\n\
5207 Otherwise, any sort of insertion attempt will result in an error."),
5208 set_target_permissions
, NULL
,
5209 &setlist
, &showlist
);
5211 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5212 &may_insert_fast_tracepoints_1
, _("\
5213 Set permission to insert fast tracepoints in the target."), _("\
5214 Show permission to insert fast tracepoints in the target."), _("\
5215 When this permission is on, GDB may insert fast tracepoints.\n\
5216 Otherwise, any sort of insertion attempt will result in an error."),
5217 set_target_permissions
, NULL
,
5218 &setlist
, &showlist
);
5220 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5222 Set permission to interrupt or signal the target."), _("\
5223 Show permission to interrupt or signal the target."), _("\
5224 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5225 Otherwise, any attempt to interrupt or stop will be ignored."),
5226 set_target_permissions
, NULL
,
5227 &setlist
, &showlist
);