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 && target_dcache_init_p ()
1671 && !region
->attrib
.cache
1672 && stack_cache_enabled_p
1673 && object
!= TARGET_OBJECT_STACK_MEMORY
)
1675 DCACHE
*dcache
= target_dcache_get ();
1677 dcache_update (dcache
, memaddr
, (void *) writebuf
, res
);
1680 /* If we still haven't got anything, return the last error. We
1685 /* Perform a partial memory transfer. For docs see target.h,
1689 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1690 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1695 /* Zero length requests are ok and require no work. */
1699 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1700 breakpoint insns, thus hiding out from higher layers whether
1701 there are software breakpoints inserted in the code stream. */
1702 if (readbuf
!= NULL
)
1704 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
);
1706 if (res
> 0 && !show_memory_breakpoints
)
1707 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1712 struct cleanup
*old_chain
;
1714 /* A large write request is likely to be partially satisfied
1715 by memory_xfer_partial_1. We will continually malloc
1716 and free a copy of the entire write request for breakpoint
1717 shadow handling even though we only end up writing a small
1718 subset of it. Cap writes to 4KB to mitigate this. */
1719 len
= min (4096, len
);
1721 buf
= xmalloc (len
);
1722 old_chain
= make_cleanup (xfree
, buf
);
1723 memcpy (buf
, writebuf
, len
);
1725 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1726 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
);
1728 do_cleanups (old_chain
);
1735 restore_show_memory_breakpoints (void *arg
)
1737 show_memory_breakpoints
= (uintptr_t) arg
;
1741 make_show_memory_breakpoints_cleanup (int show
)
1743 int current
= show_memory_breakpoints
;
1745 show_memory_breakpoints
= show
;
1746 return make_cleanup (restore_show_memory_breakpoints
,
1747 (void *) (uintptr_t) current
);
1750 /* For docs see target.h, to_xfer_partial. */
1753 target_xfer_partial (struct target_ops
*ops
,
1754 enum target_object object
, const char *annex
,
1755 void *readbuf
, const void *writebuf
,
1756 ULONGEST offset
, LONGEST len
)
1760 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1762 if (writebuf
&& !may_write_memory
)
1763 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1764 core_addr_to_string_nz (offset
), plongest (len
));
1766 /* If this is a memory transfer, let the memory-specific code
1767 have a look at it instead. Memory transfers are more
1769 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
)
1770 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1771 writebuf
, offset
, len
);
1774 enum target_object raw_object
= object
;
1776 /* If this is a raw memory transfer, request the normal
1777 memory object from other layers. */
1778 if (raw_object
== TARGET_OBJECT_RAW_MEMORY
)
1779 raw_object
= TARGET_OBJECT_MEMORY
;
1781 retval
= ops
->to_xfer_partial (ops
, raw_object
, annex
, readbuf
,
1782 writebuf
, offset
, len
);
1787 const unsigned char *myaddr
= NULL
;
1789 fprintf_unfiltered (gdb_stdlog
,
1790 "%s:target_xfer_partial "
1791 "(%d, %s, %s, %s, %s, %s) = %s",
1794 (annex
? annex
: "(null)"),
1795 host_address_to_string (readbuf
),
1796 host_address_to_string (writebuf
),
1797 core_addr_to_string_nz (offset
),
1798 plongest (len
), plongest (retval
));
1804 if (retval
> 0 && myaddr
!= NULL
)
1808 fputs_unfiltered (", bytes =", gdb_stdlog
);
1809 for (i
= 0; i
< retval
; i
++)
1811 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1813 if (targetdebug
< 2 && i
> 0)
1815 fprintf_unfiltered (gdb_stdlog
, " ...");
1818 fprintf_unfiltered (gdb_stdlog
, "\n");
1821 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1825 fputc_unfiltered ('\n', gdb_stdlog
);
1830 /* Read LEN bytes of target memory at address MEMADDR, placing the
1831 results in GDB's memory at MYADDR. Returns either 0 for success or
1832 a target_xfer_error value if any error occurs.
1834 If an error occurs, no guarantee is made about the contents of the data at
1835 MYADDR. In particular, the caller should not depend upon partial reads
1836 filling the buffer with good data. There is no way for the caller to know
1837 how much good data might have been transfered anyway. Callers that can
1838 deal with partial reads should call target_read (which will retry until
1839 it makes no progress, and then return how much was transferred). */
1842 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1844 /* Dispatch to the topmost target, not the flattened current_target.
1845 Memory accesses check target->to_has_(all_)memory, and the
1846 flattened target doesn't inherit those. */
1847 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1848 myaddr
, memaddr
, len
) == len
)
1851 return TARGET_XFER_E_IO
;
1854 /* Like target_read_memory, but specify explicitly that this is a read from
1855 the target's stack. This may trigger different cache behavior. */
1858 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1860 /* Dispatch to the topmost target, not the flattened current_target.
1861 Memory accesses check target->to_has_(all_)memory, and the
1862 flattened target doesn't inherit those. */
1864 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1865 myaddr
, memaddr
, len
) == len
)
1868 return TARGET_XFER_E_IO
;
1871 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1872 Returns either 0 for success or a target_xfer_error value if any
1873 error occurs. If an error occurs, no guarantee is made about how
1874 much data got written. Callers that can deal with partial writes
1875 should call target_write. */
1878 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1880 /* Dispatch to the topmost target, not the flattened current_target.
1881 Memory accesses check target->to_has_(all_)memory, and the
1882 flattened target doesn't inherit those. */
1883 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1884 myaddr
, memaddr
, len
) == len
)
1887 return TARGET_XFER_E_IO
;
1890 /* Write LEN bytes from MYADDR to target raw memory at address
1891 MEMADDR. Returns either 0 for success or a target_xfer_error value
1892 if any error occurs. If an error occurs, no guarantee is made
1893 about how much data got written. Callers that can deal with
1894 partial writes should call target_write. */
1897 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1899 /* Dispatch to the topmost target, not the flattened current_target.
1900 Memory accesses check target->to_has_(all_)memory, and the
1901 flattened target doesn't inherit those. */
1902 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1903 myaddr
, memaddr
, len
) == len
)
1906 return TARGET_XFER_E_IO
;
1909 /* Fetch the target's memory map. */
1912 target_memory_map (void)
1914 VEC(mem_region_s
) *result
;
1915 struct mem_region
*last_one
, *this_one
;
1917 struct target_ops
*t
;
1920 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1922 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1923 if (t
->to_memory_map
!= NULL
)
1929 result
= t
->to_memory_map (t
);
1933 qsort (VEC_address (mem_region_s
, result
),
1934 VEC_length (mem_region_s
, result
),
1935 sizeof (struct mem_region
), mem_region_cmp
);
1937 /* Check that regions do not overlap. Simultaneously assign
1938 a numbering for the "mem" commands to use to refer to
1941 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1943 this_one
->number
= ix
;
1945 if (last_one
&& last_one
->hi
> this_one
->lo
)
1947 warning (_("Overlapping regions in memory map: ignoring"));
1948 VEC_free (mem_region_s
, result
);
1951 last_one
= this_one
;
1958 target_flash_erase (ULONGEST address
, LONGEST length
)
1960 struct target_ops
*t
;
1962 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1963 if (t
->to_flash_erase
!= NULL
)
1966 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1967 hex_string (address
), phex (length
, 0));
1968 t
->to_flash_erase (t
, address
, length
);
1976 target_flash_done (void)
1978 struct target_ops
*t
;
1980 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1981 if (t
->to_flash_done
!= NULL
)
1984 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1985 t
->to_flash_done (t
);
1993 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1994 struct cmd_list_element
*c
, const char *value
)
1996 fprintf_filtered (file
,
1997 _("Mode for reading from readonly sections is %s.\n"),
2001 /* More generic transfers. */
2004 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
2005 const char *annex
, gdb_byte
*readbuf
,
2006 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
2008 if (object
== TARGET_OBJECT_MEMORY
2009 && ops
->deprecated_xfer_memory
!= NULL
)
2010 /* If available, fall back to the target's
2011 "deprecated_xfer_memory" method. */
2016 if (writebuf
!= NULL
)
2018 void *buffer
= xmalloc (len
);
2019 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
2021 memcpy (buffer
, writebuf
, len
);
2022 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
2023 1/*write*/, NULL
, ops
);
2024 do_cleanups (cleanup
);
2026 if (readbuf
!= NULL
)
2027 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
2028 0/*read*/, NULL
, ops
);
2031 else if (xfered
== 0 && errno
== 0)
2032 /* "deprecated_xfer_memory" uses 0, cross checked against
2033 ERRNO as one indication of an error. */
2038 else if (ops
->beneath
!= NULL
)
2039 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
2040 readbuf
, writebuf
, offset
, len
);
2045 /* The xfer_partial handler for the topmost target. Unlike the default,
2046 it does not need to handle memory specially; it just passes all
2047 requests down the stack. */
2050 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
2051 const char *annex
, gdb_byte
*readbuf
,
2052 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
2054 if (ops
->beneath
!= NULL
)
2055 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
2056 readbuf
, writebuf
, offset
, len
);
2061 /* Target vector read/write partial wrapper functions. */
2064 target_read_partial (struct target_ops
*ops
,
2065 enum target_object object
,
2066 const char *annex
, gdb_byte
*buf
,
2067 ULONGEST offset
, LONGEST len
)
2069 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
2073 target_write_partial (struct target_ops
*ops
,
2074 enum target_object object
,
2075 const char *annex
, const gdb_byte
*buf
,
2076 ULONGEST offset
, LONGEST len
)
2078 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
2081 /* Wrappers to perform the full transfer. */
2083 /* For docs on target_read see target.h. */
2086 target_read (struct target_ops
*ops
,
2087 enum target_object object
,
2088 const char *annex
, gdb_byte
*buf
,
2089 ULONGEST offset
, LONGEST len
)
2093 while (xfered
< len
)
2095 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
2096 (gdb_byte
*) buf
+ xfered
,
2097 offset
+ xfered
, len
- xfered
);
2099 /* Call an observer, notifying them of the xfer progress? */
2110 /* Assuming that the entire [begin, end) range of memory cannot be
2111 read, try to read whatever subrange is possible to read.
2113 The function returns, in RESULT, either zero or one memory block.
2114 If there's a readable subrange at the beginning, it is completely
2115 read and returned. Any further readable subrange will not be read.
2116 Otherwise, if there's a readable subrange at the end, it will be
2117 completely read and returned. Any readable subranges before it
2118 (obviously, not starting at the beginning), will be ignored. In
2119 other cases -- either no readable subrange, or readable subrange(s)
2120 that is neither at the beginning, or end, nothing is returned.
2122 The purpose of this function is to handle a read across a boundary
2123 of accessible memory in a case when memory map is not available.
2124 The above restrictions are fine for this case, but will give
2125 incorrect results if the memory is 'patchy'. However, supporting
2126 'patchy' memory would require trying to read every single byte,
2127 and it seems unacceptable solution. Explicit memory map is
2128 recommended for this case -- and target_read_memory_robust will
2129 take care of reading multiple ranges then. */
2132 read_whatever_is_readable (struct target_ops
*ops
,
2133 ULONGEST begin
, ULONGEST end
,
2134 VEC(memory_read_result_s
) **result
)
2136 gdb_byte
*buf
= xmalloc (end
- begin
);
2137 ULONGEST current_begin
= begin
;
2138 ULONGEST current_end
= end
;
2140 memory_read_result_s r
;
2142 /* If we previously failed to read 1 byte, nothing can be done here. */
2143 if (end
- begin
<= 1)
2149 /* Check that either first or the last byte is readable, and give up
2150 if not. This heuristic is meant to permit reading accessible memory
2151 at the boundary of accessible region. */
2152 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2153 buf
, begin
, 1) == 1)
2158 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2159 buf
+ (end
-begin
) - 1, end
- 1, 1) == 1)
2170 /* Loop invariant is that the [current_begin, current_end) was previously
2171 found to be not readable as a whole.
2173 Note loop condition -- if the range has 1 byte, we can't divide the range
2174 so there's no point trying further. */
2175 while (current_end
- current_begin
> 1)
2177 ULONGEST first_half_begin
, first_half_end
;
2178 ULONGEST second_half_begin
, second_half_end
;
2180 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2184 first_half_begin
= current_begin
;
2185 first_half_end
= middle
;
2186 second_half_begin
= middle
;
2187 second_half_end
= current_end
;
2191 first_half_begin
= middle
;
2192 first_half_end
= current_end
;
2193 second_half_begin
= current_begin
;
2194 second_half_end
= middle
;
2197 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2198 buf
+ (first_half_begin
- begin
),
2200 first_half_end
- first_half_begin
);
2202 if (xfer
== first_half_end
- first_half_begin
)
2204 /* This half reads up fine. So, the error must be in the
2206 current_begin
= second_half_begin
;
2207 current_end
= second_half_end
;
2211 /* This half is not readable. Because we've tried one byte, we
2212 know some part of this half if actually redable. Go to the next
2213 iteration to divide again and try to read.
2215 We don't handle the other half, because this function only tries
2216 to read a single readable subrange. */
2217 current_begin
= first_half_begin
;
2218 current_end
= first_half_end
;
2224 /* The [begin, current_begin) range has been read. */
2226 r
.end
= current_begin
;
2231 /* The [current_end, end) range has been read. */
2232 LONGEST rlen
= end
- current_end
;
2234 r
.data
= xmalloc (rlen
);
2235 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2236 r
.begin
= current_end
;
2240 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2244 free_memory_read_result_vector (void *x
)
2246 VEC(memory_read_result_s
) *v
= x
;
2247 memory_read_result_s
*current
;
2250 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2252 xfree (current
->data
);
2254 VEC_free (memory_read_result_s
, v
);
2257 VEC(memory_read_result_s
) *
2258 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2260 VEC(memory_read_result_s
) *result
= 0;
2263 while (xfered
< len
)
2265 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2268 /* If there is no explicit region, a fake one should be created. */
2269 gdb_assert (region
);
2271 if (region
->hi
== 0)
2272 rlen
= len
- xfered
;
2274 rlen
= region
->hi
- offset
;
2276 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2278 /* Cannot read this region. Note that we can end up here only
2279 if the region is explicitly marked inaccessible, or
2280 'inaccessible-by-default' is in effect. */
2285 LONGEST to_read
= min (len
- xfered
, rlen
);
2286 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2288 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2289 (gdb_byte
*) buffer
,
2290 offset
+ xfered
, to_read
);
2291 /* Call an observer, notifying them of the xfer progress? */
2294 /* Got an error reading full chunk. See if maybe we can read
2297 read_whatever_is_readable (ops
, offset
+ xfered
,
2298 offset
+ xfered
+ to_read
, &result
);
2303 struct memory_read_result r
;
2305 r
.begin
= offset
+ xfered
;
2306 r
.end
= r
.begin
+ xfer
;
2307 VEC_safe_push (memory_read_result_s
, result
, &r
);
2317 /* An alternative to target_write with progress callbacks. */
2320 target_write_with_progress (struct target_ops
*ops
,
2321 enum target_object object
,
2322 const char *annex
, const gdb_byte
*buf
,
2323 ULONGEST offset
, LONGEST len
,
2324 void (*progress
) (ULONGEST
, void *), void *baton
)
2328 /* Give the progress callback a chance to set up. */
2330 (*progress
) (0, baton
);
2332 while (xfered
< len
)
2334 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
2335 (gdb_byte
*) buf
+ xfered
,
2336 offset
+ xfered
, len
- xfered
);
2344 (*progress
) (xfer
, baton
);
2352 /* For docs on target_write see target.h. */
2355 target_write (struct target_ops
*ops
,
2356 enum target_object object
,
2357 const char *annex
, const gdb_byte
*buf
,
2358 ULONGEST offset
, LONGEST len
)
2360 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2364 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2365 the size of the transferred data. PADDING additional bytes are
2366 available in *BUF_P. This is a helper function for
2367 target_read_alloc; see the declaration of that function for more
2371 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2372 const char *annex
, gdb_byte
**buf_p
, int padding
)
2374 size_t buf_alloc
, buf_pos
;
2378 /* This function does not have a length parameter; it reads the
2379 entire OBJECT). Also, it doesn't support objects fetched partly
2380 from one target and partly from another (in a different stratum,
2381 e.g. a core file and an executable). Both reasons make it
2382 unsuitable for reading memory. */
2383 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2385 /* Start by reading up to 4K at a time. The target will throttle
2386 this number down if necessary. */
2388 buf
= xmalloc (buf_alloc
);
2392 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2393 buf_pos
, buf_alloc
- buf_pos
- padding
);
2396 /* An error occurred. */
2402 /* Read all there was. */
2412 /* If the buffer is filling up, expand it. */
2413 if (buf_alloc
< buf_pos
* 2)
2416 buf
= xrealloc (buf
, buf_alloc
);
2423 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2424 the size of the transferred data. See the declaration in "target.h"
2425 function for more information about the return value. */
2428 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2429 const char *annex
, gdb_byte
**buf_p
)
2431 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2434 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2435 returned as a string, allocated using xmalloc. If an error occurs
2436 or the transfer is unsupported, NULL is returned. Empty objects
2437 are returned as allocated but empty strings. A warning is issued
2438 if the result contains any embedded NUL bytes. */
2441 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2446 LONGEST i
, transferred
;
2448 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2449 bufstr
= (char *) buffer
;
2451 if (transferred
< 0)
2454 if (transferred
== 0)
2455 return xstrdup ("");
2457 bufstr
[transferred
] = 0;
2459 /* Check for embedded NUL bytes; but allow trailing NULs. */
2460 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2463 warning (_("target object %d, annex %s, "
2464 "contained unexpected null characters"),
2465 (int) object
, annex
? annex
: "(none)");
2472 /* Memory transfer methods. */
2475 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2478 /* This method is used to read from an alternate, non-current
2479 target. This read must bypass the overlay support (as symbols
2480 don't match this target), and GDB's internal cache (wrong cache
2481 for this target). */
2482 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2484 memory_error (TARGET_XFER_E_IO
, addr
);
2488 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2489 int len
, enum bfd_endian byte_order
)
2491 gdb_byte buf
[sizeof (ULONGEST
)];
2493 gdb_assert (len
<= sizeof (buf
));
2494 get_target_memory (ops
, addr
, buf
, len
);
2495 return extract_unsigned_integer (buf
, len
, byte_order
);
2499 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2500 struct bp_target_info
*bp_tgt
)
2502 if (!may_insert_breakpoints
)
2504 warning (_("May not insert breakpoints"));
2508 return (*current_target
.to_insert_breakpoint
) (gdbarch
, bp_tgt
);
2512 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2513 struct bp_target_info
*bp_tgt
)
2515 /* This is kind of a weird case to handle, but the permission might
2516 have been changed after breakpoints were inserted - in which case
2517 we should just take the user literally and assume that any
2518 breakpoints should be left in place. */
2519 if (!may_insert_breakpoints
)
2521 warning (_("May not remove breakpoints"));
2525 return (*current_target
.to_remove_breakpoint
) (gdbarch
, bp_tgt
);
2529 target_info (char *args
, int from_tty
)
2531 struct target_ops
*t
;
2532 int has_all_mem
= 0;
2534 if (symfile_objfile
!= NULL
)
2535 printf_unfiltered (_("Symbols from \"%s\".\n"),
2536 objfile_name (symfile_objfile
));
2538 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2540 if (!(*t
->to_has_memory
) (t
))
2543 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2546 printf_unfiltered (_("\tWhile running this, "
2547 "GDB does not access memory from...\n"));
2548 printf_unfiltered ("%s:\n", t
->to_longname
);
2549 (t
->to_files_info
) (t
);
2550 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2554 /* This function is called before any new inferior is created, e.g.
2555 by running a program, attaching, or connecting to a target.
2556 It cleans up any state from previous invocations which might
2557 change between runs. This is a subset of what target_preopen
2558 resets (things which might change between targets). */
2561 target_pre_inferior (int from_tty
)
2563 /* Clear out solib state. Otherwise the solib state of the previous
2564 inferior might have survived and is entirely wrong for the new
2565 target. This has been observed on GNU/Linux using glibc 2.3. How
2577 Cannot access memory at address 0xdeadbeef
2580 /* In some OSs, the shared library list is the same/global/shared
2581 across inferiors. If code is shared between processes, so are
2582 memory regions and features. */
2583 if (!gdbarch_has_global_solist (target_gdbarch ()))
2585 no_shared_libraries (NULL
, from_tty
);
2587 invalidate_target_mem_regions ();
2589 target_clear_description ();
2592 agent_capability_invalidate ();
2595 /* Callback for iterate_over_inferiors. Gets rid of the given
2599 dispose_inferior (struct inferior
*inf
, void *args
)
2601 struct thread_info
*thread
;
2603 thread
= any_thread_of_process (inf
->pid
);
2606 switch_to_thread (thread
->ptid
);
2608 /* Core inferiors actually should be detached, not killed. */
2609 if (target_has_execution
)
2612 target_detach (NULL
, 0);
2618 /* This is to be called by the open routine before it does
2622 target_preopen (int from_tty
)
2626 if (have_inferiors ())
2629 || !have_live_inferiors ()
2630 || query (_("A program is being debugged already. Kill it? ")))
2631 iterate_over_inferiors (dispose_inferior
, NULL
);
2633 error (_("Program not killed."));
2636 /* Calling target_kill may remove the target from the stack. But if
2637 it doesn't (which seems like a win for UDI), remove it now. */
2638 /* Leave the exec target, though. The user may be switching from a
2639 live process to a core of the same program. */
2640 pop_all_targets_above (file_stratum
);
2642 target_pre_inferior (from_tty
);
2645 /* Detach a target after doing deferred register stores. */
2648 target_detach (const char *args
, int from_tty
)
2650 struct target_ops
* t
;
2652 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2653 /* Don't remove global breakpoints here. They're removed on
2654 disconnection from the target. */
2657 /* If we're in breakpoints-always-inserted mode, have to remove
2658 them before detaching. */
2659 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2661 prepare_for_detach ();
2663 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2665 if (t
->to_detach
!= NULL
)
2667 t
->to_detach (t
, args
, from_tty
);
2669 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2675 internal_error (__FILE__
, __LINE__
, _("could not find a target to detach"));
2679 target_disconnect (char *args
, int from_tty
)
2681 struct target_ops
*t
;
2683 /* If we're in breakpoints-always-inserted mode or if breakpoints
2684 are global across processes, we have to remove them before
2686 remove_breakpoints ();
2688 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2689 if (t
->to_disconnect
!= NULL
)
2692 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2694 t
->to_disconnect (t
, args
, from_tty
);
2702 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2704 struct target_ops
*t
;
2706 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2708 if (t
->to_wait
!= NULL
)
2710 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2714 char *status_string
;
2715 char *options_string
;
2717 status_string
= target_waitstatus_to_string (status
);
2718 options_string
= target_options_to_string (options
);
2719 fprintf_unfiltered (gdb_stdlog
,
2720 "target_wait (%d, status, options={%s})"
2722 ptid_get_pid (ptid
), options_string
,
2723 ptid_get_pid (retval
), status_string
);
2724 xfree (status_string
);
2725 xfree (options_string
);
2736 target_pid_to_str (ptid_t ptid
)
2738 struct target_ops
*t
;
2740 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2742 if (t
->to_pid_to_str
!= NULL
)
2743 return (*t
->to_pid_to_str
) (t
, ptid
);
2746 return normal_pid_to_str (ptid
);
2750 target_thread_name (struct thread_info
*info
)
2752 struct target_ops
*t
;
2754 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2756 if (t
->to_thread_name
!= NULL
)
2757 return (*t
->to_thread_name
) (info
);
2764 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2766 struct target_ops
*t
;
2768 target_dcache_invalidate ();
2770 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2772 if (t
->to_resume
!= NULL
)
2774 t
->to_resume (t
, ptid
, step
, signal
);
2776 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2777 ptid_get_pid (ptid
),
2778 step
? "step" : "continue",
2779 gdb_signal_to_name (signal
));
2781 registers_changed_ptid (ptid
);
2782 set_executing (ptid
, 1);
2783 set_running (ptid
, 1);
2784 clear_inline_frame_state (ptid
);
2793 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2795 struct target_ops
*t
;
2797 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2799 if (t
->to_pass_signals
!= NULL
)
2805 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2808 for (i
= 0; i
< numsigs
; i
++)
2809 if (pass_signals
[i
])
2810 fprintf_unfiltered (gdb_stdlog
, " %s",
2811 gdb_signal_to_name (i
));
2813 fprintf_unfiltered (gdb_stdlog
, " })\n");
2816 (*t
->to_pass_signals
) (numsigs
, pass_signals
);
2823 target_program_signals (int numsigs
, unsigned char *program_signals
)
2825 struct target_ops
*t
;
2827 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2829 if (t
->to_program_signals
!= NULL
)
2835 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2838 for (i
= 0; i
< numsigs
; i
++)
2839 if (program_signals
[i
])
2840 fprintf_unfiltered (gdb_stdlog
, " %s",
2841 gdb_signal_to_name (i
));
2843 fprintf_unfiltered (gdb_stdlog
, " })\n");
2846 (*t
->to_program_signals
) (numsigs
, program_signals
);
2852 /* Look through the list of possible targets for a target that can
2856 target_follow_fork (int follow_child
, int detach_fork
)
2858 struct target_ops
*t
;
2860 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2862 if (t
->to_follow_fork
!= NULL
)
2864 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2867 fprintf_unfiltered (gdb_stdlog
,
2868 "target_follow_fork (%d, %d) = %d\n",
2869 follow_child
, detach_fork
, retval
);
2874 /* Some target returned a fork event, but did not know how to follow it. */
2875 internal_error (__FILE__
, __LINE__
,
2876 _("could not find a target to follow fork"));
2880 target_mourn_inferior (void)
2882 struct target_ops
*t
;
2884 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2886 if (t
->to_mourn_inferior
!= NULL
)
2888 t
->to_mourn_inferior (t
);
2890 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2892 /* We no longer need to keep handles on any of the object files.
2893 Make sure to release them to avoid unnecessarily locking any
2894 of them while we're not actually debugging. */
2895 bfd_cache_close_all ();
2901 internal_error (__FILE__
, __LINE__
,
2902 _("could not find a target to follow mourn inferior"));
2905 /* Look for a target which can describe architectural features, starting
2906 from TARGET. If we find one, return its description. */
2908 const struct target_desc
*
2909 target_read_description (struct target_ops
*target
)
2911 struct target_ops
*t
;
2913 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2914 if (t
->to_read_description
!= NULL
)
2916 const struct target_desc
*tdesc
;
2918 tdesc
= t
->to_read_description (t
);
2926 /* The default implementation of to_search_memory.
2927 This implements a basic search of memory, reading target memory and
2928 performing the search here (as opposed to performing the search in on the
2929 target side with, for example, gdbserver). */
2932 simple_search_memory (struct target_ops
*ops
,
2933 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2934 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2935 CORE_ADDR
*found_addrp
)
2937 /* NOTE: also defined in find.c testcase. */
2938 #define SEARCH_CHUNK_SIZE 16000
2939 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2940 /* Buffer to hold memory contents for searching. */
2941 gdb_byte
*search_buf
;
2942 unsigned search_buf_size
;
2943 struct cleanup
*old_cleanups
;
2945 search_buf_size
= chunk_size
+ pattern_len
- 1;
2947 /* No point in trying to allocate a buffer larger than the search space. */
2948 if (search_space_len
< search_buf_size
)
2949 search_buf_size
= search_space_len
;
2951 search_buf
= malloc (search_buf_size
);
2952 if (search_buf
== NULL
)
2953 error (_("Unable to allocate memory to perform the search."));
2954 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2956 /* Prime the search buffer. */
2958 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2959 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2961 warning (_("Unable to access %s bytes of target "
2962 "memory at %s, halting search."),
2963 pulongest (search_buf_size
), hex_string (start_addr
));
2964 do_cleanups (old_cleanups
);
2968 /* Perform the search.
2970 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2971 When we've scanned N bytes we copy the trailing bytes to the start and
2972 read in another N bytes. */
2974 while (search_space_len
>= pattern_len
)
2976 gdb_byte
*found_ptr
;
2977 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2979 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2980 pattern
, pattern_len
);
2982 if (found_ptr
!= NULL
)
2984 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2986 *found_addrp
= found_addr
;
2987 do_cleanups (old_cleanups
);
2991 /* Not found in this chunk, skip to next chunk. */
2993 /* Don't let search_space_len wrap here, it's unsigned. */
2994 if (search_space_len
>= chunk_size
)
2995 search_space_len
-= chunk_size
;
2997 search_space_len
= 0;
2999 if (search_space_len
>= pattern_len
)
3001 unsigned keep_len
= search_buf_size
- chunk_size
;
3002 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
3005 /* Copy the trailing part of the previous iteration to the front
3006 of the buffer for the next iteration. */
3007 gdb_assert (keep_len
== pattern_len
- 1);
3008 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
3010 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
3012 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
3013 search_buf
+ keep_len
, read_addr
,
3014 nr_to_read
) != nr_to_read
)
3016 warning (_("Unable to access %s bytes of target "
3017 "memory at %s, halting search."),
3018 plongest (nr_to_read
),
3019 hex_string (read_addr
));
3020 do_cleanups (old_cleanups
);
3024 start_addr
+= chunk_size
;
3030 do_cleanups (old_cleanups
);
3034 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
3035 sequence of bytes in PATTERN with length PATTERN_LEN.
3037 The result is 1 if found, 0 if not found, and -1 if there was an error
3038 requiring halting of the search (e.g. memory read error).
3039 If the pattern is found the address is recorded in FOUND_ADDRP. */
3042 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
3043 const gdb_byte
*pattern
, ULONGEST pattern_len
,
3044 CORE_ADDR
*found_addrp
)
3046 struct target_ops
*t
;
3049 /* We don't use INHERIT to set current_target.to_search_memory,
3050 so we have to scan the target stack and handle targetdebug
3054 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
3055 hex_string (start_addr
));
3057 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3058 if (t
->to_search_memory
!= NULL
)
3063 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
3064 pattern
, pattern_len
, found_addrp
);
3068 /* If a special version of to_search_memory isn't available, use the
3070 found
= simple_search_memory (current_target
.beneath
,
3071 start_addr
, search_space_len
,
3072 pattern
, pattern_len
, found_addrp
);
3076 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
3081 /* Look through the currently pushed targets. If none of them will
3082 be able to restart the currently running process, issue an error
3086 target_require_runnable (void)
3088 struct target_ops
*t
;
3090 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3092 /* If this target knows how to create a new program, then
3093 assume we will still be able to after killing the current
3094 one. Either killing and mourning will not pop T, or else
3095 find_default_run_target will find it again. */
3096 if (t
->to_create_inferior
!= NULL
)
3099 /* Do not worry about thread_stratum targets that can not
3100 create inferiors. Assume they will be pushed again if
3101 necessary, and continue to the process_stratum. */
3102 if (t
->to_stratum
== thread_stratum
3103 || t
->to_stratum
== arch_stratum
)
3106 error (_("The \"%s\" target does not support \"run\". "
3107 "Try \"help target\" or \"continue\"."),
3111 /* This function is only called if the target is running. In that
3112 case there should have been a process_stratum target and it
3113 should either know how to create inferiors, or not... */
3114 internal_error (__FILE__
, __LINE__
, _("No targets found"));
3117 /* Look through the list of possible targets for a target that can
3118 execute a run or attach command without any other data. This is
3119 used to locate the default process stratum.
3121 If DO_MESG is not NULL, the result is always valid (error() is
3122 called for errors); else, return NULL on error. */
3124 static struct target_ops
*
3125 find_default_run_target (char *do_mesg
)
3127 struct target_ops
**t
;
3128 struct target_ops
*runable
= NULL
;
3133 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3136 if ((*t
)->to_can_run
&& target_can_run (*t
))
3146 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3155 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3157 struct target_ops
*t
;
3159 t
= find_default_run_target ("attach");
3160 (t
->to_attach
) (t
, args
, from_tty
);
3165 find_default_create_inferior (struct target_ops
*ops
,
3166 char *exec_file
, char *allargs
, char **env
,
3169 struct target_ops
*t
;
3171 t
= find_default_run_target ("run");
3172 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3177 find_default_can_async_p (void)
3179 struct target_ops
*t
;
3181 /* This may be called before the target is pushed on the stack;
3182 look for the default process stratum. If there's none, gdb isn't
3183 configured with a native debugger, and target remote isn't
3185 t
= find_default_run_target (NULL
);
3186 if (t
&& t
->to_can_async_p
)
3187 return (t
->to_can_async_p
) ();
3192 find_default_is_async_p (void)
3194 struct target_ops
*t
;
3196 /* This may be called before the target is pushed on the stack;
3197 look for the default process stratum. If there's none, gdb isn't
3198 configured with a native debugger, and target remote isn't
3200 t
= find_default_run_target (NULL
);
3201 if (t
&& t
->to_is_async_p
)
3202 return (t
->to_is_async_p
) ();
3207 find_default_supports_non_stop (void)
3209 struct target_ops
*t
;
3211 t
= find_default_run_target (NULL
);
3212 if (t
&& t
->to_supports_non_stop
)
3213 return (t
->to_supports_non_stop
) ();
3218 target_supports_non_stop (void)
3220 struct target_ops
*t
;
3222 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3223 if (t
->to_supports_non_stop
)
3224 return t
->to_supports_non_stop ();
3229 /* Implement the "info proc" command. */
3232 target_info_proc (char *args
, enum info_proc_what what
)
3234 struct target_ops
*t
;
3236 /* If we're already connected to something that can get us OS
3237 related data, use it. Otherwise, try using the native
3239 if (current_target
.to_stratum
>= process_stratum
)
3240 t
= current_target
.beneath
;
3242 t
= find_default_run_target (NULL
);
3244 for (; t
!= NULL
; t
= t
->beneath
)
3246 if (t
->to_info_proc
!= NULL
)
3248 t
->to_info_proc (t
, args
, what
);
3251 fprintf_unfiltered (gdb_stdlog
,
3252 "target_info_proc (\"%s\", %d)\n", args
, what
);
3262 find_default_supports_disable_randomization (void)
3264 struct target_ops
*t
;
3266 t
= find_default_run_target (NULL
);
3267 if (t
&& t
->to_supports_disable_randomization
)
3268 return (t
->to_supports_disable_randomization
) ();
3273 target_supports_disable_randomization (void)
3275 struct target_ops
*t
;
3277 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3278 if (t
->to_supports_disable_randomization
)
3279 return t
->to_supports_disable_randomization ();
3285 target_get_osdata (const char *type
)
3287 struct target_ops
*t
;
3289 /* If we're already connected to something that can get us OS
3290 related data, use it. Otherwise, try using the native
3292 if (current_target
.to_stratum
>= process_stratum
)
3293 t
= current_target
.beneath
;
3295 t
= find_default_run_target ("get OS data");
3300 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3303 /* Determine the current address space of thread PTID. */
3305 struct address_space
*
3306 target_thread_address_space (ptid_t ptid
)
3308 struct address_space
*aspace
;
3309 struct inferior
*inf
;
3310 struct target_ops
*t
;
3312 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3314 if (t
->to_thread_address_space
!= NULL
)
3316 aspace
= t
->to_thread_address_space (t
, ptid
);
3317 gdb_assert (aspace
);
3320 fprintf_unfiltered (gdb_stdlog
,
3321 "target_thread_address_space (%s) = %d\n",
3322 target_pid_to_str (ptid
),
3323 address_space_num (aspace
));
3328 /* Fall-back to the "main" address space of the inferior. */
3329 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3331 if (inf
== NULL
|| inf
->aspace
== NULL
)
3332 internal_error (__FILE__
, __LINE__
,
3333 _("Can't determine the current "
3334 "address space of thread %s\n"),
3335 target_pid_to_str (ptid
));
3341 /* Target file operations. */
3343 static struct target_ops
*
3344 default_fileio_target (void)
3346 /* If we're already connected to something that can perform
3347 file I/O, use it. Otherwise, try using the native target. */
3348 if (current_target
.to_stratum
>= process_stratum
)
3349 return current_target
.beneath
;
3351 return find_default_run_target ("file I/O");
3354 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3355 target file descriptor, or -1 if an error occurs (and set
3358 target_fileio_open (const char *filename
, int flags
, int mode
,
3361 struct target_ops
*t
;
3363 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3365 if (t
->to_fileio_open
!= NULL
)
3367 int fd
= t
->to_fileio_open (filename
, flags
, mode
, target_errno
);
3370 fprintf_unfiltered (gdb_stdlog
,
3371 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3372 filename
, flags
, mode
,
3373 fd
, fd
!= -1 ? 0 : *target_errno
);
3378 *target_errno
= FILEIO_ENOSYS
;
3382 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3383 Return the number of bytes written, or -1 if an error occurs
3384 (and set *TARGET_ERRNO). */
3386 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3387 ULONGEST offset
, int *target_errno
)
3389 struct target_ops
*t
;
3391 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3393 if (t
->to_fileio_pwrite
!= NULL
)
3395 int ret
= t
->to_fileio_pwrite (fd
, write_buf
, len
, offset
,
3399 fprintf_unfiltered (gdb_stdlog
,
3400 "target_fileio_pwrite (%d,...,%d,%s) "
3402 fd
, len
, pulongest (offset
),
3403 ret
, ret
!= -1 ? 0 : *target_errno
);
3408 *target_errno
= FILEIO_ENOSYS
;
3412 /* Read up to LEN bytes FD on the target into READ_BUF.
3413 Return the number of bytes read, or -1 if an error occurs
3414 (and set *TARGET_ERRNO). */
3416 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3417 ULONGEST offset
, int *target_errno
)
3419 struct target_ops
*t
;
3421 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3423 if (t
->to_fileio_pread
!= NULL
)
3425 int ret
= t
->to_fileio_pread (fd
, read_buf
, len
, offset
,
3429 fprintf_unfiltered (gdb_stdlog
,
3430 "target_fileio_pread (%d,...,%d,%s) "
3432 fd
, len
, pulongest (offset
),
3433 ret
, ret
!= -1 ? 0 : *target_errno
);
3438 *target_errno
= FILEIO_ENOSYS
;
3442 /* Close FD on the target. Return 0, or -1 if an error occurs
3443 (and set *TARGET_ERRNO). */
3445 target_fileio_close (int fd
, int *target_errno
)
3447 struct target_ops
*t
;
3449 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3451 if (t
->to_fileio_close
!= NULL
)
3453 int ret
= t
->to_fileio_close (fd
, target_errno
);
3456 fprintf_unfiltered (gdb_stdlog
,
3457 "target_fileio_close (%d) = %d (%d)\n",
3458 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3463 *target_errno
= FILEIO_ENOSYS
;
3467 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3468 occurs (and set *TARGET_ERRNO). */
3470 target_fileio_unlink (const char *filename
, int *target_errno
)
3472 struct target_ops
*t
;
3474 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3476 if (t
->to_fileio_unlink
!= NULL
)
3478 int ret
= t
->to_fileio_unlink (filename
, target_errno
);
3481 fprintf_unfiltered (gdb_stdlog
,
3482 "target_fileio_unlink (%s) = %d (%d)\n",
3483 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3488 *target_errno
= FILEIO_ENOSYS
;
3492 /* Read value of symbolic link FILENAME on the target. Return a
3493 null-terminated string allocated via xmalloc, or NULL if an error
3494 occurs (and set *TARGET_ERRNO). */
3496 target_fileio_readlink (const char *filename
, int *target_errno
)
3498 struct target_ops
*t
;
3500 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3502 if (t
->to_fileio_readlink
!= NULL
)
3504 char *ret
= t
->to_fileio_readlink (filename
, target_errno
);
3507 fprintf_unfiltered (gdb_stdlog
,
3508 "target_fileio_readlink (%s) = %s (%d)\n",
3509 filename
, ret
? ret
: "(nil)",
3510 ret
? 0 : *target_errno
);
3515 *target_errno
= FILEIO_ENOSYS
;
3520 target_fileio_close_cleanup (void *opaque
)
3522 int fd
= *(int *) opaque
;
3525 target_fileio_close (fd
, &target_errno
);
3528 /* Read target file FILENAME. Store the result in *BUF_P and
3529 return the size of the transferred data. PADDING additional bytes are
3530 available in *BUF_P. This is a helper function for
3531 target_fileio_read_alloc; see the declaration of that function for more
3535 target_fileio_read_alloc_1 (const char *filename
,
3536 gdb_byte
**buf_p
, int padding
)
3538 struct cleanup
*close_cleanup
;
3539 size_t buf_alloc
, buf_pos
;
3545 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3549 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3551 /* Start by reading up to 4K at a time. The target will throttle
3552 this number down if necessary. */
3554 buf
= xmalloc (buf_alloc
);
3558 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3559 buf_alloc
- buf_pos
- padding
, buf_pos
,
3563 /* An error occurred. */
3564 do_cleanups (close_cleanup
);
3570 /* Read all there was. */
3571 do_cleanups (close_cleanup
);
3581 /* If the buffer is filling up, expand it. */
3582 if (buf_alloc
< buf_pos
* 2)
3585 buf
= xrealloc (buf
, buf_alloc
);
3592 /* Read target file FILENAME. Store the result in *BUF_P and return
3593 the size of the transferred data. See the declaration in "target.h"
3594 function for more information about the return value. */
3597 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3599 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3602 /* Read target file FILENAME. The result is NUL-terminated and
3603 returned as a string, allocated using xmalloc. If an error occurs
3604 or the transfer is unsupported, NULL is returned. Empty objects
3605 are returned as allocated but empty strings. A warning is issued
3606 if the result contains any embedded NUL bytes. */
3609 target_fileio_read_stralloc (const char *filename
)
3613 LONGEST i
, transferred
;
3615 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3616 bufstr
= (char *) buffer
;
3618 if (transferred
< 0)
3621 if (transferred
== 0)
3622 return xstrdup ("");
3624 bufstr
[transferred
] = 0;
3626 /* Check for embedded NUL bytes; but allow trailing NULs. */
3627 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3630 warning (_("target file %s "
3631 "contained unexpected null characters"),
3641 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3643 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3647 default_watchpoint_addr_within_range (struct target_ops
*target
,
3649 CORE_ADDR start
, int length
)
3651 return addr
>= start
&& addr
< start
+ length
;
3654 static struct gdbarch
*
3655 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3657 return target_gdbarch ();
3673 return_minus_one (void)
3679 * Find the next target down the stack from the specified target.
3683 find_target_beneath (struct target_ops
*t
)
3689 /* The inferior process has died. Long live the inferior! */
3692 generic_mourn_inferior (void)
3696 ptid
= inferior_ptid
;
3697 inferior_ptid
= null_ptid
;
3699 /* Mark breakpoints uninserted in case something tries to delete a
3700 breakpoint while we delete the inferior's threads (which would
3701 fail, since the inferior is long gone). */
3702 mark_breakpoints_out ();
3704 if (!ptid_equal (ptid
, null_ptid
))
3706 int pid
= ptid_get_pid (ptid
);
3707 exit_inferior (pid
);
3710 /* Note this wipes step-resume breakpoints, so needs to be done
3711 after exit_inferior, which ends up referencing the step-resume
3712 breakpoints through clear_thread_inferior_resources. */
3713 breakpoint_init_inferior (inf_exited
);
3715 registers_changed ();
3717 reopen_exec_file ();
3718 reinit_frame_cache ();
3720 if (deprecated_detach_hook
)
3721 deprecated_detach_hook ();
3724 /* Convert a normal process ID to a string. Returns the string in a
3728 normal_pid_to_str (ptid_t ptid
)
3730 static char buf
[32];
3732 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3737 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3739 return normal_pid_to_str (ptid
);
3742 /* Error-catcher for target_find_memory_regions. */
3744 dummy_find_memory_regions (find_memory_region_ftype ignore1
, void *ignore2
)
3746 error (_("Command not implemented for this target."));
3750 /* Error-catcher for target_make_corefile_notes. */
3752 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
3754 error (_("Command not implemented for this target."));
3758 /* Error-catcher for target_get_bookmark. */
3760 dummy_get_bookmark (char *ignore1
, int ignore2
)
3766 /* Error-catcher for target_goto_bookmark. */
3768 dummy_goto_bookmark (gdb_byte
*ignore
, int from_tty
)
3773 /* Set up the handful of non-empty slots needed by the dummy target
3777 init_dummy_target (void)
3779 dummy_target
.to_shortname
= "None";
3780 dummy_target
.to_longname
= "None";
3781 dummy_target
.to_doc
= "";
3782 dummy_target
.to_attach
= find_default_attach
;
3783 dummy_target
.to_detach
=
3784 (void (*)(struct target_ops
*, const char *, int))target_ignore
;
3785 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3786 dummy_target
.to_can_async_p
= find_default_can_async_p
;
3787 dummy_target
.to_is_async_p
= find_default_is_async_p
;
3788 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3789 dummy_target
.to_supports_disable_randomization
3790 = find_default_supports_disable_randomization
;
3791 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3792 dummy_target
.to_stratum
= dummy_stratum
;
3793 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
3794 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
3795 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
3796 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
3797 dummy_target
.to_xfer_partial
= default_xfer_partial
;
3798 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3799 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3800 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3801 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3802 dummy_target
.to_has_execution
3803 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3804 dummy_target
.to_stopped_by_watchpoint
= return_zero
;
3805 dummy_target
.to_stopped_data_address
=
3806 (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
;
3807 dummy_target
.to_magic
= OPS_MAGIC
;
3811 debug_to_open (char *args
, int from_tty
)
3813 debug_target
.to_open (args
, from_tty
);
3815 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3819 target_close (struct target_ops
*targ
)
3821 gdb_assert (!target_is_pushed (targ
));
3823 if (targ
->to_xclose
!= NULL
)
3824 targ
->to_xclose (targ
);
3825 else if (targ
->to_close
!= NULL
)
3829 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3833 target_attach (char *args
, int from_tty
)
3835 struct target_ops
*t
;
3837 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3839 if (t
->to_attach
!= NULL
)
3841 t
->to_attach (t
, args
, from_tty
);
3843 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3849 internal_error (__FILE__
, __LINE__
,
3850 _("could not find a target to attach"));
3854 target_thread_alive (ptid_t ptid
)
3856 struct target_ops
*t
;
3858 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3860 if (t
->to_thread_alive
!= NULL
)
3864 retval
= t
->to_thread_alive (t
, ptid
);
3866 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3867 ptid_get_pid (ptid
), retval
);
3877 target_find_new_threads (void)
3879 struct target_ops
*t
;
3881 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3883 if (t
->to_find_new_threads
!= NULL
)
3885 t
->to_find_new_threads (t
);
3887 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3895 target_stop (ptid_t ptid
)
3899 warning (_("May not interrupt or stop the target, ignoring attempt"));
3903 (*current_target
.to_stop
) (ptid
);
3907 debug_to_post_attach (int pid
)
3909 debug_target
.to_post_attach (pid
);
3911 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3914 /* Concatenate ELEM to LIST, a comma separate list, and return the
3915 result. The LIST incoming argument is released. */
3918 str_comma_list_concat_elem (char *list
, const char *elem
)
3921 return xstrdup (elem
);
3923 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3926 /* Helper for target_options_to_string. If OPT is present in
3927 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3928 Returns the new resulting string. OPT is removed from
3932 do_option (int *target_options
, char *ret
,
3933 int opt
, char *opt_str
)
3935 if ((*target_options
& opt
) != 0)
3937 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3938 *target_options
&= ~opt
;
3945 target_options_to_string (int target_options
)
3949 #define DO_TARG_OPTION(OPT) \
3950 ret = do_option (&target_options, ret, OPT, #OPT)
3952 DO_TARG_OPTION (TARGET_WNOHANG
);
3954 if (target_options
!= 0)
3955 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3963 debug_print_register (const char * func
,
3964 struct regcache
*regcache
, int regno
)
3966 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3968 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3969 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3970 && gdbarch_register_name (gdbarch
, regno
) != NULL
3971 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3972 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3973 gdbarch_register_name (gdbarch
, regno
));
3975 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3976 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3978 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3979 int i
, size
= register_size (gdbarch
, regno
);
3980 gdb_byte buf
[MAX_REGISTER_SIZE
];
3982 regcache_raw_collect (regcache
, regno
, buf
);
3983 fprintf_unfiltered (gdb_stdlog
, " = ");
3984 for (i
= 0; i
< size
; i
++)
3986 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3988 if (size
<= sizeof (LONGEST
))
3990 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3992 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3993 core_addr_to_string_nz (val
), plongest (val
));
3996 fprintf_unfiltered (gdb_stdlog
, "\n");
4000 target_fetch_registers (struct regcache
*regcache
, int regno
)
4002 struct target_ops
*t
;
4004 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4006 if (t
->to_fetch_registers
!= NULL
)
4008 t
->to_fetch_registers (t
, regcache
, regno
);
4010 debug_print_register ("target_fetch_registers", regcache
, regno
);
4017 target_store_registers (struct regcache
*regcache
, int regno
)
4019 struct target_ops
*t
;
4021 if (!may_write_registers
)
4022 error (_("Writing to registers is not allowed (regno %d)"), regno
);
4024 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4026 if (t
->to_store_registers
!= NULL
)
4028 t
->to_store_registers (t
, regcache
, regno
);
4031 debug_print_register ("target_store_registers", regcache
, regno
);
4041 target_core_of_thread (ptid_t ptid
)
4043 struct target_ops
*t
;
4045 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4047 if (t
->to_core_of_thread
!= NULL
)
4049 int retval
= t
->to_core_of_thread (t
, ptid
);
4052 fprintf_unfiltered (gdb_stdlog
,
4053 "target_core_of_thread (%d) = %d\n",
4054 ptid_get_pid (ptid
), retval
);
4063 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
4065 struct target_ops
*t
;
4067 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4069 if (t
->to_verify_memory
!= NULL
)
4071 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
4074 fprintf_unfiltered (gdb_stdlog
,
4075 "target_verify_memory (%s, %s) = %d\n",
4076 paddress (target_gdbarch (), memaddr
),
4086 /* The documentation for this function is in its prototype declaration in
4090 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4092 struct target_ops
*t
;
4094 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4095 if (t
->to_insert_mask_watchpoint
!= NULL
)
4099 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
4102 fprintf_unfiltered (gdb_stdlog
, "\
4103 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
4104 core_addr_to_string (addr
),
4105 core_addr_to_string (mask
), rw
, ret
);
4113 /* The documentation for this function is in its prototype declaration in
4117 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4119 struct target_ops
*t
;
4121 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4122 if (t
->to_remove_mask_watchpoint
!= NULL
)
4126 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
4129 fprintf_unfiltered (gdb_stdlog
, "\
4130 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
4131 core_addr_to_string (addr
),
4132 core_addr_to_string (mask
), rw
, ret
);
4140 /* The documentation for this function is in its prototype declaration
4144 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4146 struct target_ops
*t
;
4148 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4149 if (t
->to_masked_watch_num_registers
!= NULL
)
4150 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4155 /* The documentation for this function is in its prototype declaration
4159 target_ranged_break_num_registers (void)
4161 struct target_ops
*t
;
4163 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4164 if (t
->to_ranged_break_num_registers
!= NULL
)
4165 return t
->to_ranged_break_num_registers (t
);
4173 target_supports_btrace (void)
4175 struct target_ops
*t
;
4177 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4178 if (t
->to_supports_btrace
!= NULL
)
4179 return t
->to_supports_btrace ();
4186 struct btrace_target_info
*
4187 target_enable_btrace (ptid_t ptid
)
4189 struct target_ops
*t
;
4191 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4192 if (t
->to_enable_btrace
!= NULL
)
4193 return t
->to_enable_btrace (ptid
);
4202 target_disable_btrace (struct btrace_target_info
*btinfo
)
4204 struct target_ops
*t
;
4206 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4207 if (t
->to_disable_btrace
!= NULL
)
4209 t
->to_disable_btrace (btinfo
);
4219 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4221 struct target_ops
*t
;
4223 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4224 if (t
->to_teardown_btrace
!= NULL
)
4226 t
->to_teardown_btrace (btinfo
);
4235 VEC (btrace_block_s
) *
4236 target_read_btrace (struct btrace_target_info
*btinfo
,
4237 enum btrace_read_type type
)
4239 struct target_ops
*t
;
4241 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4242 if (t
->to_read_btrace
!= NULL
)
4243 return t
->to_read_btrace (btinfo
, type
);
4252 target_stop_recording (void)
4254 struct target_ops
*t
;
4256 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4257 if (t
->to_stop_recording
!= NULL
)
4259 t
->to_stop_recording ();
4263 /* This is optional. */
4269 target_info_record (void)
4271 struct target_ops
*t
;
4273 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4274 if (t
->to_info_record
!= NULL
)
4276 t
->to_info_record ();
4286 target_save_record (const char *filename
)
4288 struct target_ops
*t
;
4290 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4291 if (t
->to_save_record
!= NULL
)
4293 t
->to_save_record (filename
);
4303 target_supports_delete_record (void)
4305 struct target_ops
*t
;
4307 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4308 if (t
->to_delete_record
!= NULL
)
4317 target_delete_record (void)
4319 struct target_ops
*t
;
4321 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4322 if (t
->to_delete_record
!= NULL
)
4324 t
->to_delete_record ();
4334 target_record_is_replaying (void)
4336 struct target_ops
*t
;
4338 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4339 if (t
->to_record_is_replaying
!= NULL
)
4340 return t
->to_record_is_replaying ();
4348 target_goto_record_begin (void)
4350 struct target_ops
*t
;
4352 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4353 if (t
->to_goto_record_begin
!= NULL
)
4355 t
->to_goto_record_begin ();
4365 target_goto_record_end (void)
4367 struct target_ops
*t
;
4369 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4370 if (t
->to_goto_record_end
!= NULL
)
4372 t
->to_goto_record_end ();
4382 target_goto_record (ULONGEST insn
)
4384 struct target_ops
*t
;
4386 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4387 if (t
->to_goto_record
!= NULL
)
4389 t
->to_goto_record (insn
);
4399 target_insn_history (int size
, int flags
)
4401 struct target_ops
*t
;
4403 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4404 if (t
->to_insn_history
!= NULL
)
4406 t
->to_insn_history (size
, flags
);
4416 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4418 struct target_ops
*t
;
4420 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4421 if (t
->to_insn_history_from
!= NULL
)
4423 t
->to_insn_history_from (from
, size
, flags
);
4433 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4435 struct target_ops
*t
;
4437 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4438 if (t
->to_insn_history_range
!= NULL
)
4440 t
->to_insn_history_range (begin
, end
, flags
);
4450 target_call_history (int size
, int flags
)
4452 struct target_ops
*t
;
4454 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4455 if (t
->to_call_history
!= NULL
)
4457 t
->to_call_history (size
, flags
);
4467 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4469 struct target_ops
*t
;
4471 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4472 if (t
->to_call_history_from
!= NULL
)
4474 t
->to_call_history_from (begin
, size
, flags
);
4484 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4486 struct target_ops
*t
;
4488 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4489 if (t
->to_call_history_range
!= NULL
)
4491 t
->to_call_history_range (begin
, end
, flags
);
4499 debug_to_prepare_to_store (struct regcache
*regcache
)
4501 debug_target
.to_prepare_to_store (regcache
);
4503 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4507 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4508 int write
, struct mem_attrib
*attrib
,
4509 struct target_ops
*target
)
4513 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4516 fprintf_unfiltered (gdb_stdlog
,
4517 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4518 paddress (target_gdbarch (), memaddr
), len
,
4519 write
? "write" : "read", retval
);
4525 fputs_unfiltered (", bytes =", gdb_stdlog
);
4526 for (i
= 0; i
< retval
; i
++)
4528 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4530 if (targetdebug
< 2 && i
> 0)
4532 fprintf_unfiltered (gdb_stdlog
, " ...");
4535 fprintf_unfiltered (gdb_stdlog
, "\n");
4538 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4542 fputc_unfiltered ('\n', gdb_stdlog
);
4548 debug_to_files_info (struct target_ops
*target
)
4550 debug_target
.to_files_info (target
);
4552 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4556 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
4557 struct bp_target_info
*bp_tgt
)
4561 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
4563 fprintf_unfiltered (gdb_stdlog
,
4564 "target_insert_breakpoint (%s, xxx) = %ld\n",
4565 core_addr_to_string (bp_tgt
->placed_address
),
4566 (unsigned long) retval
);
4571 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
4572 struct bp_target_info
*bp_tgt
)
4576 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
4578 fprintf_unfiltered (gdb_stdlog
,
4579 "target_remove_breakpoint (%s, xxx) = %ld\n",
4580 core_addr_to_string (bp_tgt
->placed_address
),
4581 (unsigned long) retval
);
4586 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
4590 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
4592 fprintf_unfiltered (gdb_stdlog
,
4593 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4594 (unsigned long) type
,
4595 (unsigned long) cnt
,
4596 (unsigned long) from_tty
,
4597 (unsigned long) retval
);
4602 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
4606 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
4608 fprintf_unfiltered (gdb_stdlog
,
4609 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4610 core_addr_to_string (addr
), (unsigned long) len
,
4611 core_addr_to_string (retval
));
4616 debug_to_can_accel_watchpoint_condition (CORE_ADDR addr
, int len
, int rw
,
4617 struct expression
*cond
)
4621 retval
= debug_target
.to_can_accel_watchpoint_condition (addr
, len
,
4624 fprintf_unfiltered (gdb_stdlog
,
4625 "target_can_accel_watchpoint_condition "
4626 "(%s, %d, %d, %s) = %ld\n",
4627 core_addr_to_string (addr
), len
, rw
,
4628 host_address_to_string (cond
), (unsigned long) retval
);
4633 debug_to_stopped_by_watchpoint (void)
4637 retval
= debug_target
.to_stopped_by_watchpoint ();
4639 fprintf_unfiltered (gdb_stdlog
,
4640 "target_stopped_by_watchpoint () = %ld\n",
4641 (unsigned long) retval
);
4646 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4650 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4652 fprintf_unfiltered (gdb_stdlog
,
4653 "target_stopped_data_address ([%s]) = %ld\n",
4654 core_addr_to_string (*addr
),
4655 (unsigned long)retval
);
4660 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4662 CORE_ADDR start
, int length
)
4666 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4669 fprintf_filtered (gdb_stdlog
,
4670 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4671 core_addr_to_string (addr
), core_addr_to_string (start
),
4677 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
4678 struct bp_target_info
*bp_tgt
)
4682 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
4684 fprintf_unfiltered (gdb_stdlog
,
4685 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4686 core_addr_to_string (bp_tgt
->placed_address
),
4687 (unsigned long) retval
);
4692 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
4693 struct bp_target_info
*bp_tgt
)
4697 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
4699 fprintf_unfiltered (gdb_stdlog
,
4700 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4701 core_addr_to_string (bp_tgt
->placed_address
),
4702 (unsigned long) retval
);
4707 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
4708 struct expression
*cond
)
4712 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
, cond
);
4714 fprintf_unfiltered (gdb_stdlog
,
4715 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4716 core_addr_to_string (addr
), len
, type
,
4717 host_address_to_string (cond
), (unsigned long) retval
);
4722 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
4723 struct expression
*cond
)
4727 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
, cond
);
4729 fprintf_unfiltered (gdb_stdlog
,
4730 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4731 core_addr_to_string (addr
), len
, type
,
4732 host_address_to_string (cond
), (unsigned long) retval
);
4737 debug_to_terminal_init (void)
4739 debug_target
.to_terminal_init ();
4741 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4745 debug_to_terminal_inferior (void)
4747 debug_target
.to_terminal_inferior ();
4749 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4753 debug_to_terminal_ours_for_output (void)
4755 debug_target
.to_terminal_ours_for_output ();
4757 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4761 debug_to_terminal_ours (void)
4763 debug_target
.to_terminal_ours ();
4765 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4769 debug_to_terminal_save_ours (void)
4771 debug_target
.to_terminal_save_ours ();
4773 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4777 debug_to_terminal_info (const char *arg
, int from_tty
)
4779 debug_target
.to_terminal_info (arg
, from_tty
);
4781 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4786 debug_to_load (char *args
, int from_tty
)
4788 debug_target
.to_load (args
, from_tty
);
4790 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4794 debug_to_post_startup_inferior (ptid_t ptid
)
4796 debug_target
.to_post_startup_inferior (ptid
);
4798 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4799 ptid_get_pid (ptid
));
4803 debug_to_insert_fork_catchpoint (int pid
)
4807 retval
= debug_target
.to_insert_fork_catchpoint (pid
);
4809 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4816 debug_to_remove_fork_catchpoint (int pid
)
4820 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
4822 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4829 debug_to_insert_vfork_catchpoint (int pid
)
4833 retval
= debug_target
.to_insert_vfork_catchpoint (pid
);
4835 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4842 debug_to_remove_vfork_catchpoint (int pid
)
4846 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
4848 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4855 debug_to_insert_exec_catchpoint (int pid
)
4859 retval
= debug_target
.to_insert_exec_catchpoint (pid
);
4861 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4868 debug_to_remove_exec_catchpoint (int pid
)
4872 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
4874 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4881 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
4885 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
4887 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4888 pid
, wait_status
, *exit_status
, has_exited
);
4894 debug_to_can_run (void)
4898 retval
= debug_target
.to_can_run ();
4900 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4905 static struct gdbarch
*
4906 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4908 struct gdbarch
*retval
;
4910 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4912 fprintf_unfiltered (gdb_stdlog
,
4913 "target_thread_architecture (%s) = %s [%s]\n",
4914 target_pid_to_str (ptid
),
4915 host_address_to_string (retval
),
4916 gdbarch_bfd_arch_info (retval
)->printable_name
);
4921 debug_to_stop (ptid_t ptid
)
4923 debug_target
.to_stop (ptid
);
4925 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4926 target_pid_to_str (ptid
));
4930 debug_to_rcmd (char *command
,
4931 struct ui_file
*outbuf
)
4933 debug_target
.to_rcmd (command
, outbuf
);
4934 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4938 debug_to_pid_to_exec_file (int pid
)
4942 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
4944 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4951 setup_target_debug (void)
4953 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4955 current_target
.to_open
= debug_to_open
;
4956 current_target
.to_post_attach
= debug_to_post_attach
;
4957 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4958 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4959 current_target
.to_files_info
= debug_to_files_info
;
4960 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4961 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4962 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4963 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4964 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4965 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4966 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4967 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4968 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4969 current_target
.to_watchpoint_addr_within_range
4970 = debug_to_watchpoint_addr_within_range
;
4971 current_target
.to_region_ok_for_hw_watchpoint
4972 = debug_to_region_ok_for_hw_watchpoint
;
4973 current_target
.to_can_accel_watchpoint_condition
4974 = debug_to_can_accel_watchpoint_condition
;
4975 current_target
.to_terminal_init
= debug_to_terminal_init
;
4976 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4977 current_target
.to_terminal_ours_for_output
4978 = debug_to_terminal_ours_for_output
;
4979 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4980 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4981 current_target
.to_terminal_info
= debug_to_terminal_info
;
4982 current_target
.to_load
= debug_to_load
;
4983 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4984 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4985 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4986 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4987 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4988 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4989 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4990 current_target
.to_has_exited
= debug_to_has_exited
;
4991 current_target
.to_can_run
= debug_to_can_run
;
4992 current_target
.to_stop
= debug_to_stop
;
4993 current_target
.to_rcmd
= debug_to_rcmd
;
4994 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4995 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4999 static char targ_desc
[] =
5000 "Names of targets and files being debugged.\nShows the entire \
5001 stack of targets currently in use (including the exec-file,\n\
5002 core-file, and process, if any), as well as the symbol file name.";
5005 do_monitor_command (char *cmd
,
5008 if ((current_target
.to_rcmd
5009 == (void (*) (char *, struct ui_file
*)) tcomplain
)
5010 || (current_target
.to_rcmd
== debug_to_rcmd
5011 && (debug_target
.to_rcmd
5012 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
5013 error (_("\"monitor\" command not supported by this target."));
5014 target_rcmd (cmd
, gdb_stdtarg
);
5017 /* Print the name of each layers of our target stack. */
5020 maintenance_print_target_stack (char *cmd
, int from_tty
)
5022 struct target_ops
*t
;
5024 printf_filtered (_("The current target stack is:\n"));
5026 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
5028 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
5032 /* Controls if async mode is permitted. */
5033 int target_async_permitted
= 0;
5035 /* The set command writes to this variable. If the inferior is
5036 executing, target_async_permitted is *not* updated. */
5037 static int target_async_permitted_1
= 0;
5040 set_target_async_command (char *args
, int from_tty
,
5041 struct cmd_list_element
*c
)
5043 if (have_live_inferiors ())
5045 target_async_permitted_1
= target_async_permitted
;
5046 error (_("Cannot change this setting while the inferior is running."));
5049 target_async_permitted
= target_async_permitted_1
;
5053 show_target_async_command (struct ui_file
*file
, int from_tty
,
5054 struct cmd_list_element
*c
,
5057 fprintf_filtered (file
,
5058 _("Controlling the inferior in "
5059 "asynchronous mode is %s.\n"), value
);
5062 /* Temporary copies of permission settings. */
5064 static int may_write_registers_1
= 1;
5065 static int may_write_memory_1
= 1;
5066 static int may_insert_breakpoints_1
= 1;
5067 static int may_insert_tracepoints_1
= 1;
5068 static int may_insert_fast_tracepoints_1
= 1;
5069 static int may_stop_1
= 1;
5071 /* Make the user-set values match the real values again. */
5074 update_target_permissions (void)
5076 may_write_registers_1
= may_write_registers
;
5077 may_write_memory_1
= may_write_memory
;
5078 may_insert_breakpoints_1
= may_insert_breakpoints
;
5079 may_insert_tracepoints_1
= may_insert_tracepoints
;
5080 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
5081 may_stop_1
= may_stop
;
5084 /* The one function handles (most of) the permission flags in the same
5088 set_target_permissions (char *args
, int from_tty
,
5089 struct cmd_list_element
*c
)
5091 if (target_has_execution
)
5093 update_target_permissions ();
5094 error (_("Cannot change this setting while the inferior is running."));
5097 /* Make the real values match the user-changed values. */
5098 may_write_registers
= may_write_registers_1
;
5099 may_insert_breakpoints
= may_insert_breakpoints_1
;
5100 may_insert_tracepoints
= may_insert_tracepoints_1
;
5101 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
5102 may_stop
= may_stop_1
;
5103 update_observer_mode ();
5106 /* Set memory write permission independently of observer mode. */
5109 set_write_memory_permission (char *args
, int from_tty
,
5110 struct cmd_list_element
*c
)
5112 /* Make the real values match the user-changed values. */
5113 may_write_memory
= may_write_memory_1
;
5114 update_observer_mode ();
5119 initialize_targets (void)
5121 init_dummy_target ();
5122 push_target (&dummy_target
);
5124 add_info ("target", target_info
, targ_desc
);
5125 add_info ("files", target_info
, targ_desc
);
5127 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
5128 Set target debugging."), _("\
5129 Show target debugging."), _("\
5130 When non-zero, target debugging is enabled. Higher numbers are more\n\
5131 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
5135 &setdebuglist
, &showdebuglist
);
5137 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
5138 &trust_readonly
, _("\
5139 Set mode for reading from readonly sections."), _("\
5140 Show mode for reading from readonly sections."), _("\
5141 When this mode is on, memory reads from readonly sections (such as .text)\n\
5142 will be read from the object file instead of from the target. This will\n\
5143 result in significant performance improvement for remote targets."),
5145 show_trust_readonly
,
5146 &setlist
, &showlist
);
5148 add_com ("monitor", class_obscure
, do_monitor_command
,
5149 _("Send a command to the remote monitor (remote targets only)."));
5151 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5152 _("Print the name of each layer of the internal target stack."),
5153 &maintenanceprintlist
);
5155 add_setshow_boolean_cmd ("target-async", no_class
,
5156 &target_async_permitted_1
, _("\
5157 Set whether gdb controls the inferior in asynchronous mode."), _("\
5158 Show whether gdb controls the inferior in asynchronous mode."), _("\
5159 Tells gdb whether to control the inferior in asynchronous mode."),
5160 set_target_async_command
,
5161 show_target_async_command
,
5165 add_setshow_boolean_cmd ("stack-cache", class_support
,
5166 &stack_cache_enabled_p_1
, _("\
5167 Set cache use for stack access."), _("\
5168 Show cache use for stack access."), _("\
5169 When on, use the data cache for all stack access, regardless of any\n\
5170 configured memory regions. This improves remote performance significantly.\n\
5171 By default, caching for stack access is on."),
5172 set_stack_cache_enabled_p
,
5173 show_stack_cache_enabled_p
,
5174 &setlist
, &showlist
);
5176 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5177 &may_write_registers_1
, _("\
5178 Set permission to write into registers."), _("\
5179 Show permission to write into registers."), _("\
5180 When this permission is on, GDB may write into the target's registers.\n\
5181 Otherwise, any sort of write attempt will result in an error."),
5182 set_target_permissions
, NULL
,
5183 &setlist
, &showlist
);
5185 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5186 &may_write_memory_1
, _("\
5187 Set permission to write into target memory."), _("\
5188 Show permission to write into target memory."), _("\
5189 When this permission is on, GDB may write into the target's memory.\n\
5190 Otherwise, any sort of write attempt will result in an error."),
5191 set_write_memory_permission
, NULL
,
5192 &setlist
, &showlist
);
5194 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5195 &may_insert_breakpoints_1
, _("\
5196 Set permission to insert breakpoints in the target."), _("\
5197 Show permission to insert breakpoints in the target."), _("\
5198 When this permission is on, GDB may insert breakpoints in the program.\n\
5199 Otherwise, any sort of insertion attempt will result in an error."),
5200 set_target_permissions
, NULL
,
5201 &setlist
, &showlist
);
5203 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5204 &may_insert_tracepoints_1
, _("\
5205 Set permission to insert tracepoints in the target."), _("\
5206 Show permission to insert tracepoints in the target."), _("\
5207 When this permission is on, GDB may insert tracepoints in the program.\n\
5208 Otherwise, any sort of insertion attempt will result in an error."),
5209 set_target_permissions
, NULL
,
5210 &setlist
, &showlist
);
5212 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5213 &may_insert_fast_tracepoints_1
, _("\
5214 Set permission to insert fast tracepoints in the target."), _("\
5215 Show permission to insert fast tracepoints in the target."), _("\
5216 When this permission is on, GDB may insert fast tracepoints.\n\
5217 Otherwise, any sort of insertion attempt will result in an error."),
5218 set_target_permissions
, NULL
,
5219 &setlist
, &showlist
);
5221 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5223 Set permission to interrupt or signal the target."), _("\
5224 Show permission to interrupt or signal the target."), _("\
5225 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5226 Otherwise, any attempt to interrupt or stop will be ignored."),
5227 set_target_permissions
, NULL
,
5228 &setlist
, &showlist
);