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/>. */
24 #include "gdb_string.h"
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 LONGEST
target_xfer_partial (struct target_ops
*ops
,
85 enum target_object object
,
87 void *readbuf
, const void *writebuf
,
88 ULONGEST offset
, LONGEST len
);
90 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
93 static void init_dummy_target (void);
95 static struct target_ops debug_target
;
97 static void debug_to_open (char *, int);
99 static void debug_to_prepare_to_store (struct regcache
*);
101 static void debug_to_files_info (struct target_ops
*);
103 static int debug_to_insert_breakpoint (struct gdbarch
*,
104 struct bp_target_info
*);
106 static int debug_to_remove_breakpoint (struct gdbarch
*,
107 struct bp_target_info
*);
109 static int debug_to_can_use_hw_breakpoint (int, int, int);
111 static int debug_to_insert_hw_breakpoint (struct gdbarch
*,
112 struct bp_target_info
*);
114 static int debug_to_remove_hw_breakpoint (struct gdbarch
*,
115 struct bp_target_info
*);
117 static int debug_to_insert_watchpoint (CORE_ADDR
, int, int,
118 struct expression
*);
120 static int debug_to_remove_watchpoint (CORE_ADDR
, int, int,
121 struct expression
*);
123 static int debug_to_stopped_by_watchpoint (void);
125 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
127 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
128 CORE_ADDR
, CORE_ADDR
, int);
130 static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
132 static int debug_to_can_accel_watchpoint_condition (CORE_ADDR
, int, int,
133 struct expression
*);
135 static void debug_to_terminal_init (void);
137 static void debug_to_terminal_inferior (void);
139 static void debug_to_terminal_ours_for_output (void);
141 static void debug_to_terminal_save_ours (void);
143 static void debug_to_terminal_ours (void);
145 static void debug_to_load (char *, int);
147 static int debug_to_can_run (void);
149 static void debug_to_stop (ptid_t
);
151 /* Pointer to array of target architecture structures; the size of the
152 array; the current index into the array; the allocated size of the
154 struct target_ops
**target_structs
;
155 unsigned target_struct_size
;
156 unsigned target_struct_allocsize
;
157 #define DEFAULT_ALLOCSIZE 10
159 /* The initial current target, so that there is always a semi-valid
162 static struct target_ops dummy_target
;
164 /* Top of target stack. */
166 static struct target_ops
*target_stack
;
168 /* The target structure we are currently using to talk to a process
169 or file or whatever "inferior" we have. */
171 struct target_ops current_target
;
173 /* Command list for target. */
175 static struct cmd_list_element
*targetlist
= NULL
;
177 /* Nonzero if we should trust readonly sections from the
178 executable when reading memory. */
180 static int trust_readonly
= 0;
182 /* Nonzero if we should show true memory content including
183 memory breakpoint inserted by gdb. */
185 static int show_memory_breakpoints
= 0;
187 /* These globals control whether GDB attempts to perform these
188 operations; they are useful for targets that need to prevent
189 inadvertant disruption, such as in non-stop mode. */
191 int may_write_registers
= 1;
193 int may_write_memory
= 1;
195 int may_insert_breakpoints
= 1;
197 int may_insert_tracepoints
= 1;
199 int may_insert_fast_tracepoints
= 1;
203 /* Non-zero if we want to see trace of target level stuff. */
205 static unsigned int targetdebug
= 0;
207 show_targetdebug (struct ui_file
*file
, int from_tty
,
208 struct cmd_list_element
*c
, const char *value
)
210 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
213 static void setup_target_debug (void);
215 /* The option sets this. */
216 static int stack_cache_enabled_p_1
= 1;
217 /* And set_stack_cache_enabled_p updates this.
218 The reason for the separation is so that we don't flush the cache for
219 on->on transitions. */
220 static int stack_cache_enabled_p
= 1;
222 /* This is called *after* the stack-cache has been set.
223 Flush the cache for off->on and on->off transitions.
224 There's no real need to flush the cache for on->off transitions,
225 except cleanliness. */
228 set_stack_cache_enabled_p (char *args
, int from_tty
,
229 struct cmd_list_element
*c
)
231 if (stack_cache_enabled_p
!= stack_cache_enabled_p_1
)
232 target_dcache_invalidate ();
234 stack_cache_enabled_p
= stack_cache_enabled_p_1
;
238 show_stack_cache_enabled_p (struct ui_file
*file
, int from_tty
,
239 struct cmd_list_element
*c
, const char *value
)
241 fprintf_filtered (file
, _("Cache use for stack accesses is %s.\n"), value
);
244 /* Cache of memory operations, to speed up remote access. */
245 static DCACHE
*target_dcache
;
247 /* Invalidate the target dcache. */
250 target_dcache_invalidate (void)
252 dcache_invalidate (target_dcache
);
255 /* The user just typed 'target' without the name of a target. */
258 target_command (char *arg
, int from_tty
)
260 fputs_filtered ("Argument required (target name). Try `help target'\n",
264 /* Default target_has_* methods for process_stratum targets. */
267 default_child_has_all_memory (struct target_ops
*ops
)
269 /* If no inferior selected, then we can't read memory here. */
270 if (ptid_equal (inferior_ptid
, null_ptid
))
277 default_child_has_memory (struct target_ops
*ops
)
279 /* If no inferior selected, then we can't read memory here. */
280 if (ptid_equal (inferior_ptid
, null_ptid
))
287 default_child_has_stack (struct target_ops
*ops
)
289 /* If no inferior selected, there's no stack. */
290 if (ptid_equal (inferior_ptid
, null_ptid
))
297 default_child_has_registers (struct target_ops
*ops
)
299 /* Can't read registers from no inferior. */
300 if (ptid_equal (inferior_ptid
, null_ptid
))
307 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
309 /* If there's no thread selected, then we can't make it run through
311 if (ptid_equal (the_ptid
, null_ptid
))
319 target_has_all_memory_1 (void)
321 struct target_ops
*t
;
323 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
324 if (t
->to_has_all_memory (t
))
331 target_has_memory_1 (void)
333 struct target_ops
*t
;
335 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
336 if (t
->to_has_memory (t
))
343 target_has_stack_1 (void)
345 struct target_ops
*t
;
347 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
348 if (t
->to_has_stack (t
))
355 target_has_registers_1 (void)
357 struct target_ops
*t
;
359 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
360 if (t
->to_has_registers (t
))
367 target_has_execution_1 (ptid_t the_ptid
)
369 struct target_ops
*t
;
371 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
372 if (t
->to_has_execution (t
, the_ptid
))
379 target_has_execution_current (void)
381 return target_has_execution_1 (inferior_ptid
);
384 /* Complete initialization of T. This ensures that various fields in
385 T are set, if needed by the target implementation. */
388 complete_target_initialization (struct target_ops
*t
)
390 /* Provide default values for all "must have" methods. */
391 if (t
->to_xfer_partial
== NULL
)
392 t
->to_xfer_partial
= default_xfer_partial
;
394 if (t
->to_has_all_memory
== NULL
)
395 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
397 if (t
->to_has_memory
== NULL
)
398 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
400 if (t
->to_has_stack
== NULL
)
401 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
403 if (t
->to_has_registers
== NULL
)
404 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
406 if (t
->to_has_execution
== NULL
)
407 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
410 /* Add possible target architecture T to the list and add a new
411 command 'target T->to_shortname'. Set COMPLETER as the command's
412 completer if not NULL. */
415 add_target_with_completer (struct target_ops
*t
,
416 completer_ftype
*completer
)
418 struct cmd_list_element
*c
;
420 complete_target_initialization (t
);
424 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
425 target_structs
= (struct target_ops
**) xmalloc
426 (target_struct_allocsize
* sizeof (*target_structs
));
428 if (target_struct_size
>= target_struct_allocsize
)
430 target_struct_allocsize
*= 2;
431 target_structs
= (struct target_ops
**)
432 xrealloc ((char *) target_structs
,
433 target_struct_allocsize
* sizeof (*target_structs
));
435 target_structs
[target_struct_size
++] = t
;
437 if (targetlist
== NULL
)
438 add_prefix_cmd ("target", class_run
, target_command
, _("\
439 Connect to a target machine or process.\n\
440 The first argument is the type or protocol of the target machine.\n\
441 Remaining arguments are interpreted by the target protocol. For more\n\
442 information on the arguments for a particular protocol, type\n\
443 `help target ' followed by the protocol name."),
444 &targetlist
, "target ", 0, &cmdlist
);
445 c
= add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
,
447 if (completer
!= NULL
)
448 set_cmd_completer (c
, completer
);
451 /* Add a possible target architecture to the list. */
454 add_target (struct target_ops
*t
)
456 add_target_with_completer (t
, NULL
);
462 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
464 struct cmd_list_element
*c
;
467 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
469 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
470 alt
= xstrprintf ("target %s", t
->to_shortname
);
471 deprecate_cmd (c
, alt
);
484 struct target_ops
*t
;
486 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
487 if (t
->to_kill
!= NULL
)
490 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
500 target_load (char *arg
, int from_tty
)
502 target_dcache_invalidate ();
503 (*current_target
.to_load
) (arg
, from_tty
);
507 target_create_inferior (char *exec_file
, char *args
,
508 char **env
, int from_tty
)
510 struct target_ops
*t
;
512 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
514 if (t
->to_create_inferior
!= NULL
)
516 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
518 fprintf_unfiltered (gdb_stdlog
,
519 "target_create_inferior (%s, %s, xxx, %d)\n",
520 exec_file
, args
, from_tty
);
525 internal_error (__FILE__
, __LINE__
,
526 _("could not find a target to create inferior"));
530 target_terminal_inferior (void)
532 /* A background resume (``run&'') should leave GDB in control of the
533 terminal. Use target_can_async_p, not target_is_async_p, since at
534 this point the target is not async yet. However, if sync_execution
535 is not set, we know it will become async prior to resume. */
536 if (target_can_async_p () && !sync_execution
)
539 /* If GDB is resuming the inferior in the foreground, install
540 inferior's terminal modes. */
541 (*current_target
.to_terminal_inferior
) ();
545 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
546 struct target_ops
*t
)
548 errno
= EIO
; /* Can't read/write this location. */
549 return 0; /* No bytes handled. */
555 error (_("You can't do that when your target is `%s'"),
556 current_target
.to_shortname
);
562 error (_("You can't do that without a process to debug."));
566 default_terminal_info (const char *args
, int from_tty
)
568 printf_unfiltered (_("No saved terminal information.\n"));
571 /* A default implementation for the to_get_ada_task_ptid target method.
573 This function builds the PTID by using both LWP and TID as part of
574 the PTID lwp and tid elements. The pid used is the pid of the
578 default_get_ada_task_ptid (long lwp
, long tid
)
580 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
583 static enum exec_direction_kind
584 default_execution_direction (void)
586 if (!target_can_execute_reverse
)
588 else if (!target_can_async_p ())
591 gdb_assert_not_reached ("\
592 to_execution_direction must be implemented for reverse async");
595 /* Go through the target stack from top to bottom, copying over zero
596 entries in current_target, then filling in still empty entries. In
597 effect, we are doing class inheritance through the pushed target
600 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
601 is currently implemented, is that it discards any knowledge of
602 which target an inherited method originally belonged to.
603 Consequently, new new target methods should instead explicitly and
604 locally search the target stack for the target that can handle the
608 update_current_target (void)
610 struct target_ops
*t
;
612 /* First, reset current's contents. */
613 memset (¤t_target
, 0, sizeof (current_target
));
615 #define INHERIT(FIELD, TARGET) \
616 if (!current_target.FIELD) \
617 current_target.FIELD = (TARGET)->FIELD
619 for (t
= target_stack
; t
; t
= t
->beneath
)
621 INHERIT (to_shortname
, t
);
622 INHERIT (to_longname
, t
);
624 /* Do not inherit to_open. */
625 /* Do not inherit to_close. */
626 /* Do not inherit to_attach. */
627 INHERIT (to_post_attach
, t
);
628 INHERIT (to_attach_no_wait
, t
);
629 /* Do not inherit to_detach. */
630 /* Do not inherit to_disconnect. */
631 /* Do not inherit to_resume. */
632 /* Do not inherit to_wait. */
633 /* Do not inherit to_fetch_registers. */
634 /* Do not inherit to_store_registers. */
635 INHERIT (to_prepare_to_store
, t
);
636 INHERIT (deprecated_xfer_memory
, t
);
637 INHERIT (to_files_info
, t
);
638 INHERIT (to_insert_breakpoint
, t
);
639 INHERIT (to_remove_breakpoint
, t
);
640 INHERIT (to_can_use_hw_breakpoint
, t
);
641 INHERIT (to_insert_hw_breakpoint
, t
);
642 INHERIT (to_remove_hw_breakpoint
, t
);
643 /* Do not inherit to_ranged_break_num_registers. */
644 INHERIT (to_insert_watchpoint
, t
);
645 INHERIT (to_remove_watchpoint
, t
);
646 /* Do not inherit to_insert_mask_watchpoint. */
647 /* Do not inherit to_remove_mask_watchpoint. */
648 INHERIT (to_stopped_data_address
, t
);
649 INHERIT (to_have_steppable_watchpoint
, t
);
650 INHERIT (to_have_continuable_watchpoint
, t
);
651 INHERIT (to_stopped_by_watchpoint
, t
);
652 INHERIT (to_watchpoint_addr_within_range
, t
);
653 INHERIT (to_region_ok_for_hw_watchpoint
, t
);
654 INHERIT (to_can_accel_watchpoint_condition
, t
);
655 /* Do not inherit to_masked_watch_num_registers. */
656 INHERIT (to_terminal_init
, t
);
657 INHERIT (to_terminal_inferior
, t
);
658 INHERIT (to_terminal_ours_for_output
, t
);
659 INHERIT (to_terminal_ours
, t
);
660 INHERIT (to_terminal_save_ours
, t
);
661 INHERIT (to_terminal_info
, t
);
662 /* Do not inherit to_kill. */
663 INHERIT (to_load
, t
);
664 /* Do no inherit to_create_inferior. */
665 INHERIT (to_post_startup_inferior
, t
);
666 INHERIT (to_insert_fork_catchpoint
, t
);
667 INHERIT (to_remove_fork_catchpoint
, t
);
668 INHERIT (to_insert_vfork_catchpoint
, t
);
669 INHERIT (to_remove_vfork_catchpoint
, t
);
670 /* Do not inherit to_follow_fork. */
671 INHERIT (to_insert_exec_catchpoint
, t
);
672 INHERIT (to_remove_exec_catchpoint
, t
);
673 INHERIT (to_set_syscall_catchpoint
, t
);
674 INHERIT (to_has_exited
, t
);
675 /* Do not inherit to_mourn_inferior. */
676 INHERIT (to_can_run
, t
);
677 /* Do not inherit to_pass_signals. */
678 /* Do not inherit to_program_signals. */
679 /* Do not inherit to_thread_alive. */
680 /* Do not inherit to_find_new_threads. */
681 /* Do not inherit to_pid_to_str. */
682 INHERIT (to_extra_thread_info
, t
);
683 INHERIT (to_thread_name
, t
);
684 INHERIT (to_stop
, t
);
685 /* Do not inherit to_xfer_partial. */
686 INHERIT (to_rcmd
, t
);
687 INHERIT (to_pid_to_exec_file
, t
);
688 INHERIT (to_log_command
, t
);
689 INHERIT (to_stratum
, t
);
690 /* Do not inherit to_has_all_memory. */
691 /* Do not inherit to_has_memory. */
692 /* Do not inherit to_has_stack. */
693 /* Do not inherit to_has_registers. */
694 /* Do not inherit to_has_execution. */
695 INHERIT (to_has_thread_control
, t
);
696 INHERIT (to_can_async_p
, t
);
697 INHERIT (to_is_async_p
, t
);
698 INHERIT (to_async
, t
);
699 INHERIT (to_find_memory_regions
, t
);
700 INHERIT (to_make_corefile_notes
, t
);
701 INHERIT (to_get_bookmark
, t
);
702 INHERIT (to_goto_bookmark
, t
);
703 /* Do not inherit to_get_thread_local_address. */
704 INHERIT (to_can_execute_reverse
, t
);
705 INHERIT (to_execution_direction
, t
);
706 INHERIT (to_thread_architecture
, t
);
707 /* Do not inherit to_read_description. */
708 INHERIT (to_get_ada_task_ptid
, t
);
709 /* Do not inherit to_search_memory. */
710 INHERIT (to_supports_multi_process
, t
);
711 INHERIT (to_supports_enable_disable_tracepoint
, t
);
712 INHERIT (to_supports_string_tracing
, t
);
713 INHERIT (to_trace_init
, t
);
714 INHERIT (to_download_tracepoint
, t
);
715 INHERIT (to_can_download_tracepoint
, t
);
716 INHERIT (to_download_trace_state_variable
, t
);
717 INHERIT (to_enable_tracepoint
, t
);
718 INHERIT (to_disable_tracepoint
, t
);
719 INHERIT (to_trace_set_readonly_regions
, t
);
720 INHERIT (to_trace_start
, t
);
721 INHERIT (to_get_trace_status
, t
);
722 INHERIT (to_get_tracepoint_status
, t
);
723 INHERIT (to_trace_stop
, t
);
724 INHERIT (to_trace_find
, t
);
725 INHERIT (to_get_trace_state_variable_value
, t
);
726 INHERIT (to_save_trace_data
, t
);
727 INHERIT (to_upload_tracepoints
, t
);
728 INHERIT (to_upload_trace_state_variables
, t
);
729 INHERIT (to_get_raw_trace_data
, t
);
730 INHERIT (to_get_min_fast_tracepoint_insn_len
, t
);
731 INHERIT (to_set_disconnected_tracing
, t
);
732 INHERIT (to_set_circular_trace_buffer
, t
);
733 INHERIT (to_set_trace_buffer_size
, t
);
734 INHERIT (to_set_trace_notes
, t
);
735 INHERIT (to_get_tib_address
, t
);
736 INHERIT (to_set_permissions
, t
);
737 INHERIT (to_static_tracepoint_marker_at
, t
);
738 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
739 INHERIT (to_traceframe_info
, t
);
740 INHERIT (to_use_agent
, t
);
741 INHERIT (to_can_use_agent
, t
);
742 INHERIT (to_augmented_libraries_svr4_read
, t
);
743 INHERIT (to_magic
, t
);
744 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
745 INHERIT (to_can_run_breakpoint_commands
, t
);
746 /* Do not inherit to_memory_map. */
747 /* Do not inherit to_flash_erase. */
748 /* Do not inherit to_flash_done. */
752 /* Clean up a target struct so it no longer has any zero pointers in
753 it. Some entries are defaulted to a method that print an error,
754 others are hard-wired to a standard recursive default. */
756 #define de_fault(field, value) \
757 if (!current_target.field) \
758 current_target.field = value
761 (void (*) (char *, int))
766 de_fault (to_post_attach
,
769 de_fault (to_prepare_to_store
,
770 (void (*) (struct regcache
*))
772 de_fault (deprecated_xfer_memory
,
773 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
774 struct mem_attrib
*, struct target_ops
*))
776 de_fault (to_files_info
,
777 (void (*) (struct target_ops
*))
779 de_fault (to_insert_breakpoint
,
780 memory_insert_breakpoint
);
781 de_fault (to_remove_breakpoint
,
782 memory_remove_breakpoint
);
783 de_fault (to_can_use_hw_breakpoint
,
784 (int (*) (int, int, int))
786 de_fault (to_insert_hw_breakpoint
,
787 (int (*) (struct gdbarch
*, struct bp_target_info
*))
789 de_fault (to_remove_hw_breakpoint
,
790 (int (*) (struct gdbarch
*, struct bp_target_info
*))
792 de_fault (to_insert_watchpoint
,
793 (int (*) (CORE_ADDR
, int, int, struct expression
*))
795 de_fault (to_remove_watchpoint
,
796 (int (*) (CORE_ADDR
, int, int, struct expression
*))
798 de_fault (to_stopped_by_watchpoint
,
801 de_fault (to_stopped_data_address
,
802 (int (*) (struct target_ops
*, CORE_ADDR
*))
804 de_fault (to_watchpoint_addr_within_range
,
805 default_watchpoint_addr_within_range
);
806 de_fault (to_region_ok_for_hw_watchpoint
,
807 default_region_ok_for_hw_watchpoint
);
808 de_fault (to_can_accel_watchpoint_condition
,
809 (int (*) (CORE_ADDR
, int, int, struct expression
*))
811 de_fault (to_terminal_init
,
814 de_fault (to_terminal_inferior
,
817 de_fault (to_terminal_ours_for_output
,
820 de_fault (to_terminal_ours
,
823 de_fault (to_terminal_save_ours
,
826 de_fault (to_terminal_info
,
827 default_terminal_info
);
829 (void (*) (char *, int))
831 de_fault (to_post_startup_inferior
,
834 de_fault (to_insert_fork_catchpoint
,
837 de_fault (to_remove_fork_catchpoint
,
840 de_fault (to_insert_vfork_catchpoint
,
843 de_fault (to_remove_vfork_catchpoint
,
846 de_fault (to_insert_exec_catchpoint
,
849 de_fault (to_remove_exec_catchpoint
,
852 de_fault (to_set_syscall_catchpoint
,
853 (int (*) (int, int, int, int, int *))
855 de_fault (to_has_exited
,
856 (int (*) (int, int, int *))
858 de_fault (to_can_run
,
860 de_fault (to_extra_thread_info
,
861 (char *(*) (struct thread_info
*))
863 de_fault (to_thread_name
,
864 (char *(*) (struct thread_info
*))
869 current_target
.to_xfer_partial
= current_xfer_partial
;
871 (void (*) (char *, struct ui_file
*))
873 de_fault (to_pid_to_exec_file
,
877 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
879 de_fault (to_thread_architecture
,
880 default_thread_architecture
);
881 current_target
.to_read_description
= NULL
;
882 de_fault (to_get_ada_task_ptid
,
883 (ptid_t (*) (long, long))
884 default_get_ada_task_ptid
);
885 de_fault (to_supports_multi_process
,
888 de_fault (to_supports_enable_disable_tracepoint
,
891 de_fault (to_supports_string_tracing
,
894 de_fault (to_trace_init
,
897 de_fault (to_download_tracepoint
,
898 (void (*) (struct bp_location
*))
900 de_fault (to_can_download_tracepoint
,
903 de_fault (to_download_trace_state_variable
,
904 (void (*) (struct trace_state_variable
*))
906 de_fault (to_enable_tracepoint
,
907 (void (*) (struct bp_location
*))
909 de_fault (to_disable_tracepoint
,
910 (void (*) (struct bp_location
*))
912 de_fault (to_trace_set_readonly_regions
,
915 de_fault (to_trace_start
,
918 de_fault (to_get_trace_status
,
919 (int (*) (struct trace_status
*))
921 de_fault (to_get_tracepoint_status
,
922 (void (*) (struct breakpoint
*, struct uploaded_tp
*))
924 de_fault (to_trace_stop
,
927 de_fault (to_trace_find
,
928 (int (*) (enum trace_find_type
, int, CORE_ADDR
, CORE_ADDR
, int *))
930 de_fault (to_get_trace_state_variable_value
,
931 (int (*) (int, LONGEST
*))
933 de_fault (to_save_trace_data
,
934 (int (*) (const char *))
936 de_fault (to_upload_tracepoints
,
937 (int (*) (struct uploaded_tp
**))
939 de_fault (to_upload_trace_state_variables
,
940 (int (*) (struct uploaded_tsv
**))
942 de_fault (to_get_raw_trace_data
,
943 (LONGEST (*) (gdb_byte
*, ULONGEST
, LONGEST
))
945 de_fault (to_get_min_fast_tracepoint_insn_len
,
948 de_fault (to_set_disconnected_tracing
,
951 de_fault (to_set_circular_trace_buffer
,
954 de_fault (to_set_trace_buffer_size
,
957 de_fault (to_set_trace_notes
,
958 (int (*) (const char *, const char *, const char *))
960 de_fault (to_get_tib_address
,
961 (int (*) (ptid_t
, CORE_ADDR
*))
963 de_fault (to_set_permissions
,
966 de_fault (to_static_tracepoint_marker_at
,
967 (int (*) (CORE_ADDR
, struct static_tracepoint_marker
*))
969 de_fault (to_static_tracepoint_markers_by_strid
,
970 (VEC(static_tracepoint_marker_p
) * (*) (const char *))
972 de_fault (to_traceframe_info
,
973 (struct traceframe_info
* (*) (void))
975 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
978 de_fault (to_can_run_breakpoint_commands
,
981 de_fault (to_use_agent
,
984 de_fault (to_can_use_agent
,
987 de_fault (to_augmented_libraries_svr4_read
,
990 de_fault (to_execution_direction
, default_execution_direction
);
994 /* Finally, position the target-stack beneath the squashed
995 "current_target". That way code looking for a non-inherited
996 target method can quickly and simply find it. */
997 current_target
.beneath
= target_stack
;
1000 setup_target_debug ();
1003 /* Push a new target type into the stack of the existing target accessors,
1004 possibly superseding some of the existing accessors.
1006 Rather than allow an empty stack, we always have the dummy target at
1007 the bottom stratum, so we can call the function vectors without
1011 push_target (struct target_ops
*t
)
1013 struct target_ops
**cur
;
1015 /* Check magic number. If wrong, it probably means someone changed
1016 the struct definition, but not all the places that initialize one. */
1017 if (t
->to_magic
!= OPS_MAGIC
)
1019 fprintf_unfiltered (gdb_stderr
,
1020 "Magic number of %s target struct wrong\n",
1022 internal_error (__FILE__
, __LINE__
,
1023 _("failed internal consistency check"));
1026 /* Find the proper stratum to install this target in. */
1027 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1029 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
1033 /* If there's already targets at this stratum, remove them. */
1034 /* FIXME: cagney/2003-10-15: I think this should be popping all
1035 targets to CUR, and not just those at this stratum level. */
1036 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
1038 /* There's already something at this stratum level. Close it,
1039 and un-hook it from the stack. */
1040 struct target_ops
*tmp
= (*cur
);
1042 (*cur
) = (*cur
)->beneath
;
1043 tmp
->beneath
= NULL
;
1047 /* We have removed all targets in our stratum, now add the new one. */
1048 t
->beneath
= (*cur
);
1051 update_current_target ();
1054 /* Remove a target_ops vector from the stack, wherever it may be.
1055 Return how many times it was removed (0 or 1). */
1058 unpush_target (struct target_ops
*t
)
1060 struct target_ops
**cur
;
1061 struct target_ops
*tmp
;
1063 if (t
->to_stratum
== dummy_stratum
)
1064 internal_error (__FILE__
, __LINE__
,
1065 _("Attempt to unpush the dummy target"));
1067 /* Look for the specified target. Note that we assume that a target
1068 can only occur once in the target stack. */
1070 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1076 /* If we don't find target_ops, quit. Only open targets should be
1081 /* Unchain the target. */
1083 (*cur
) = (*cur
)->beneath
;
1084 tmp
->beneath
= NULL
;
1086 update_current_target ();
1088 /* Finally close the target. Note we do this after unchaining, so
1089 any target method calls from within the target_close
1090 implementation don't end up in T anymore. */
1097 pop_all_targets_above (enum strata above_stratum
)
1099 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
1101 if (!unpush_target (target_stack
))
1103 fprintf_unfiltered (gdb_stderr
,
1104 "pop_all_targets couldn't find target %s\n",
1105 target_stack
->to_shortname
);
1106 internal_error (__FILE__
, __LINE__
,
1107 _("failed internal consistency check"));
1114 pop_all_targets (void)
1116 pop_all_targets_above (dummy_stratum
);
1119 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
1122 target_is_pushed (struct target_ops
*t
)
1124 struct target_ops
**cur
;
1126 /* Check magic number. If wrong, it probably means someone changed
1127 the struct definition, but not all the places that initialize one. */
1128 if (t
->to_magic
!= OPS_MAGIC
)
1130 fprintf_unfiltered (gdb_stderr
,
1131 "Magic number of %s target struct wrong\n",
1133 internal_error (__FILE__
, __LINE__
,
1134 _("failed internal consistency check"));
1137 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1144 /* Using the objfile specified in OBJFILE, find the address for the
1145 current thread's thread-local storage with offset OFFSET. */
1147 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1149 volatile CORE_ADDR addr
= 0;
1150 struct target_ops
*target
;
1152 for (target
= current_target
.beneath
;
1154 target
= target
->beneath
)
1156 if (target
->to_get_thread_local_address
!= NULL
)
1161 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
1163 ptid_t ptid
= inferior_ptid
;
1164 volatile struct gdb_exception ex
;
1166 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1170 /* Fetch the load module address for this objfile. */
1171 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1173 /* If it's 0, throw the appropriate exception. */
1175 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1176 _("TLS load module not found"));
1178 addr
= target
->to_get_thread_local_address (target
, ptid
,
1181 /* If an error occurred, print TLS related messages here. Otherwise,
1182 throw the error to some higher catcher. */
1185 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1189 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1190 error (_("Cannot find thread-local variables "
1191 "in this thread library."));
1193 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1194 if (objfile_is_library
)
1195 error (_("Cannot find shared library `%s' in dynamic"
1196 " linker's load module list"), objfile
->name
);
1198 error (_("Cannot find executable file `%s' in dynamic"
1199 " linker's load module list"), objfile
->name
);
1201 case TLS_NOT_ALLOCATED_YET_ERROR
:
1202 if (objfile_is_library
)
1203 error (_("The inferior has not yet allocated storage for"
1204 " thread-local variables in\n"
1205 "the shared library `%s'\n"
1207 objfile
->name
, target_pid_to_str (ptid
));
1209 error (_("The inferior has not yet allocated storage for"
1210 " thread-local variables in\n"
1211 "the executable `%s'\n"
1213 objfile
->name
, target_pid_to_str (ptid
));
1215 case TLS_GENERIC_ERROR
:
1216 if (objfile_is_library
)
1217 error (_("Cannot find thread-local storage for %s, "
1218 "shared library %s:\n%s"),
1219 target_pid_to_str (ptid
),
1220 objfile
->name
, ex
.message
);
1222 error (_("Cannot find thread-local storage for %s, "
1223 "executable file %s:\n%s"),
1224 target_pid_to_str (ptid
),
1225 objfile
->name
, ex
.message
);
1228 throw_exception (ex
);
1233 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1234 TLS is an ABI-specific thing. But we don't do that yet. */
1236 error (_("Cannot find thread-local variables on this target"));
1242 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1244 /* target_read_string -- read a null terminated string, up to LEN bytes,
1245 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1246 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1247 is responsible for freeing it. Return the number of bytes successfully
1251 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1253 int tlen
, offset
, i
;
1257 int buffer_allocated
;
1259 unsigned int nbytes_read
= 0;
1261 gdb_assert (string
);
1263 /* Small for testing. */
1264 buffer_allocated
= 4;
1265 buffer
= xmalloc (buffer_allocated
);
1270 tlen
= MIN (len
, 4 - (memaddr
& 3));
1271 offset
= memaddr
& 3;
1273 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1276 /* The transfer request might have crossed the boundary to an
1277 unallocated region of memory. Retry the transfer, requesting
1281 errcode
= target_read_memory (memaddr
, buf
, 1);
1286 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1290 bytes
= bufptr
- buffer
;
1291 buffer_allocated
*= 2;
1292 buffer
= xrealloc (buffer
, buffer_allocated
);
1293 bufptr
= buffer
+ bytes
;
1296 for (i
= 0; i
< tlen
; i
++)
1298 *bufptr
++ = buf
[i
+ offset
];
1299 if (buf
[i
+ offset
] == '\000')
1301 nbytes_read
+= i
+ 1;
1308 nbytes_read
+= tlen
;
1317 struct target_section_table
*
1318 target_get_section_table (struct target_ops
*target
)
1320 struct target_ops
*t
;
1323 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1325 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1326 if (t
->to_get_section_table
!= NULL
)
1327 return (*t
->to_get_section_table
) (t
);
1332 /* Find a section containing ADDR. */
1334 struct target_section
*
1335 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1337 struct target_section_table
*table
= target_get_section_table (target
);
1338 struct target_section
*secp
;
1343 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1345 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1351 /* Read memory from the live target, even if currently inspecting a
1352 traceframe. The return is the same as that of target_read. */
1355 target_read_live_memory (enum target_object object
,
1356 ULONGEST memaddr
, gdb_byte
*myaddr
, LONGEST len
)
1359 struct cleanup
*cleanup
;
1361 /* Switch momentarily out of tfind mode so to access live memory.
1362 Note that this must not clear global state, such as the frame
1363 cache, which must still remain valid for the previous traceframe.
1364 We may be _building_ the frame cache at this point. */
1365 cleanup
= make_cleanup_restore_traceframe_number ();
1366 set_traceframe_number (-1);
1368 ret
= target_read (current_target
.beneath
, object
, NULL
,
1369 myaddr
, memaddr
, len
);
1371 do_cleanups (cleanup
);
1375 /* Using the set of read-only target sections of OPS, read live
1376 read-only memory. Note that the actual reads start from the
1377 top-most target again.
1379 For interface/parameters/return description see target.h,
1383 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1384 enum target_object object
,
1385 gdb_byte
*readbuf
, ULONGEST memaddr
,
1388 struct target_section
*secp
;
1389 struct target_section_table
*table
;
1391 secp
= target_section_by_addr (ops
, memaddr
);
1393 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1394 secp
->the_bfd_section
)
1397 struct target_section
*p
;
1398 ULONGEST memend
= memaddr
+ len
;
1400 table
= target_get_section_table (ops
);
1402 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1404 if (memaddr
>= p
->addr
)
1406 if (memend
<= p
->endaddr
)
1408 /* Entire transfer is within this section. */
1409 return target_read_live_memory (object
, memaddr
,
1412 else if (memaddr
>= p
->endaddr
)
1414 /* This section ends before the transfer starts. */
1419 /* This section overlaps the transfer. Just do half. */
1420 len
= p
->endaddr
- memaddr
;
1421 return target_read_live_memory (object
, memaddr
,
1431 /* Perform a partial memory transfer.
1432 For docs see target.h, to_xfer_partial. */
1435 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1436 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1441 struct mem_region
*region
;
1442 struct inferior
*inf
;
1444 /* For accesses to unmapped overlay sections, read directly from
1445 files. Must do this first, as MEMADDR may need adjustment. */
1446 if (readbuf
!= NULL
&& overlay_debugging
)
1448 struct obj_section
*section
= find_pc_overlay (memaddr
);
1450 if (pc_in_unmapped_range (memaddr
, section
))
1452 struct target_section_table
*table
1453 = target_get_section_table (ops
);
1454 const char *section_name
= section
->the_bfd_section
->name
;
1456 memaddr
= overlay_mapped_address (memaddr
, section
);
1457 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1460 table
->sections_end
,
1465 /* Try the executable files, if "trust-readonly-sections" is set. */
1466 if (readbuf
!= NULL
&& trust_readonly
)
1468 struct target_section
*secp
;
1469 struct target_section_table
*table
;
1471 secp
= target_section_by_addr (ops
, memaddr
);
1473 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1474 secp
->the_bfd_section
)
1477 table
= target_get_section_table (ops
);
1478 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1481 table
->sections_end
,
1486 /* If reading unavailable memory in the context of traceframes, and
1487 this address falls within a read-only section, fallback to
1488 reading from live memory. */
1489 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1491 VEC(mem_range_s
) *available
;
1493 /* If we fail to get the set of available memory, then the
1494 target does not support querying traceframe info, and so we
1495 attempt reading from the traceframe anyway (assuming the
1496 target implements the old QTro packet then). */
1497 if (traceframe_available_memory (&available
, memaddr
, len
))
1499 struct cleanup
*old_chain
;
1501 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1503 if (VEC_empty (mem_range_s
, available
)
1504 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1506 /* Don't read into the traceframe's available
1508 if (!VEC_empty (mem_range_s
, available
))
1510 LONGEST oldlen
= len
;
1512 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1513 gdb_assert (len
<= oldlen
);
1516 do_cleanups (old_chain
);
1518 /* This goes through the topmost target again. */
1519 res
= memory_xfer_live_readonly_partial (ops
, object
,
1520 readbuf
, memaddr
, len
);
1524 /* No use trying further, we know some memory starting
1525 at MEMADDR isn't available. */
1529 /* Don't try to read more than how much is available, in
1530 case the target implements the deprecated QTro packet to
1531 cater for older GDBs (the target's knowledge of read-only
1532 sections may be outdated by now). */
1533 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1535 do_cleanups (old_chain
);
1539 /* Try GDB's internal data cache. */
1540 region
= lookup_mem_region (memaddr
);
1541 /* region->hi == 0 means there's no upper bound. */
1542 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1545 reg_len
= region
->hi
- memaddr
;
1547 switch (region
->attrib
.mode
)
1550 if (writebuf
!= NULL
)
1555 if (readbuf
!= NULL
)
1560 /* We only support writing to flash during "load" for now. */
1561 if (writebuf
!= NULL
)
1562 error (_("Writing to flash memory forbidden in this context"));
1569 if (!ptid_equal (inferior_ptid
, null_ptid
))
1570 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1575 /* The dcache reads whole cache lines; that doesn't play well
1576 with reading from a trace buffer, because reading outside of
1577 the collected memory range fails. */
1578 && get_traceframe_number () == -1
1579 && (region
->attrib
.cache
1580 || (stack_cache_enabled_p
&& object
== TARGET_OBJECT_STACK_MEMORY
)))
1582 if (readbuf
!= NULL
)
1583 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
, readbuf
,
1586 /* FIXME drow/2006-08-09: If we're going to preserve const
1587 correctness dcache_xfer_memory should take readbuf and
1589 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
,
1598 /* If none of those methods found the memory we wanted, fall back
1599 to a target partial transfer. Normally a single call to
1600 to_xfer_partial is enough; if it doesn't recognize an object
1601 it will call the to_xfer_partial of the next target down.
1602 But for memory this won't do. Memory is the only target
1603 object which can be read from more than one valid target.
1604 A core file, for instance, could have some of memory but
1605 delegate other bits to the target below it. So, we must
1606 manually try all targets. */
1610 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1611 readbuf
, writebuf
, memaddr
, reg_len
);
1615 /* We want to continue past core files to executables, but not
1616 past a running target's memory. */
1617 if (ops
->to_has_all_memory (ops
))
1622 while (ops
!= NULL
);
1624 /* Make sure the cache gets updated no matter what - if we are writing
1625 to the stack. Even if this write is not tagged as such, we still need
1626 to update the cache. */
1631 && !region
->attrib
.cache
1632 && stack_cache_enabled_p
1633 && object
!= TARGET_OBJECT_STACK_MEMORY
)
1635 dcache_update (target_dcache
, memaddr
, (void *) writebuf
, res
);
1638 /* If we still haven't got anything, return the last error. We
1643 /* Perform a partial memory transfer. For docs see target.h,
1647 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1648 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1653 /* Zero length requests are ok and require no work. */
1657 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1658 breakpoint insns, thus hiding out from higher layers whether
1659 there are software breakpoints inserted in the code stream. */
1660 if (readbuf
!= NULL
)
1662 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
);
1664 if (res
> 0 && !show_memory_breakpoints
)
1665 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1670 struct cleanup
*old_chain
;
1672 buf
= xmalloc (len
);
1673 old_chain
= make_cleanup (xfree
, buf
);
1674 memcpy (buf
, writebuf
, len
);
1676 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1677 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
);
1679 do_cleanups (old_chain
);
1686 restore_show_memory_breakpoints (void *arg
)
1688 show_memory_breakpoints
= (uintptr_t) arg
;
1692 make_show_memory_breakpoints_cleanup (int show
)
1694 int current
= show_memory_breakpoints
;
1696 show_memory_breakpoints
= show
;
1697 return make_cleanup (restore_show_memory_breakpoints
,
1698 (void *) (uintptr_t) current
);
1701 /* For docs see target.h, to_xfer_partial. */
1704 target_xfer_partial (struct target_ops
*ops
,
1705 enum target_object object
, const char *annex
,
1706 void *readbuf
, const void *writebuf
,
1707 ULONGEST offset
, LONGEST len
)
1711 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1713 if (writebuf
&& !may_write_memory
)
1714 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1715 core_addr_to_string_nz (offset
), plongest (len
));
1717 /* If this is a memory transfer, let the memory-specific code
1718 have a look at it instead. Memory transfers are more
1720 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
)
1721 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1722 writebuf
, offset
, len
);
1725 enum target_object raw_object
= object
;
1727 /* If this is a raw memory transfer, request the normal
1728 memory object from other layers. */
1729 if (raw_object
== TARGET_OBJECT_RAW_MEMORY
)
1730 raw_object
= TARGET_OBJECT_MEMORY
;
1732 retval
= ops
->to_xfer_partial (ops
, raw_object
, annex
, readbuf
,
1733 writebuf
, offset
, len
);
1738 const unsigned char *myaddr
= NULL
;
1740 fprintf_unfiltered (gdb_stdlog
,
1741 "%s:target_xfer_partial "
1742 "(%d, %s, %s, %s, %s, %s) = %s",
1745 (annex
? annex
: "(null)"),
1746 host_address_to_string (readbuf
),
1747 host_address_to_string (writebuf
),
1748 core_addr_to_string_nz (offset
),
1749 plongest (len
), plongest (retval
));
1755 if (retval
> 0 && myaddr
!= NULL
)
1759 fputs_unfiltered (", bytes =", gdb_stdlog
);
1760 for (i
= 0; i
< retval
; i
++)
1762 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1764 if (targetdebug
< 2 && i
> 0)
1766 fprintf_unfiltered (gdb_stdlog
, " ...");
1769 fprintf_unfiltered (gdb_stdlog
, "\n");
1772 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1776 fputc_unfiltered ('\n', gdb_stdlog
);
1781 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
1782 GDB's memory at MYADDR. Returns either 0 for success or an errno value
1783 if any error occurs.
1785 If an error occurs, no guarantee is made about the contents of the data at
1786 MYADDR. In particular, the caller should not depend upon partial reads
1787 filling the buffer with good data. There is no way for the caller to know
1788 how much good data might have been transfered anyway. Callers that can
1789 deal with partial reads should call target_read (which will retry until
1790 it makes no progress, and then return how much was transferred). */
1793 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1795 /* Dispatch to the topmost target, not the flattened current_target.
1796 Memory accesses check target->to_has_(all_)memory, and the
1797 flattened target doesn't inherit those. */
1798 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1799 myaddr
, memaddr
, len
) == len
)
1805 /* Like target_read_memory, but specify explicitly that this is a read from
1806 the target's stack. This may trigger different cache behavior. */
1809 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1811 /* Dispatch to the topmost target, not the flattened current_target.
1812 Memory accesses check target->to_has_(all_)memory, and the
1813 flattened target doesn't inherit those. */
1815 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1816 myaddr
, memaddr
, len
) == len
)
1822 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1823 Returns either 0 for success or an errno value if any error occurs.
1824 If an error occurs, no guarantee is made about how much data got written.
1825 Callers that can deal with partial writes should call target_write. */
1828 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1830 /* Dispatch to the topmost target, not the flattened current_target.
1831 Memory accesses check target->to_has_(all_)memory, and the
1832 flattened target doesn't inherit those. */
1833 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1834 myaddr
, memaddr
, len
) == len
)
1840 /* Write LEN bytes from MYADDR to target raw memory at address
1841 MEMADDR. Returns either 0 for success or an errno value if any
1842 error occurs. If an error occurs, no guarantee is made about how
1843 much data got written. Callers that can deal with partial writes
1844 should call target_write. */
1847 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1849 /* Dispatch to the topmost target, not the flattened current_target.
1850 Memory accesses check target->to_has_(all_)memory, and the
1851 flattened target doesn't inherit those. */
1852 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1853 myaddr
, memaddr
, len
) == len
)
1859 /* Fetch the target's memory map. */
1862 target_memory_map (void)
1864 VEC(mem_region_s
) *result
;
1865 struct mem_region
*last_one
, *this_one
;
1867 struct target_ops
*t
;
1870 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1872 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1873 if (t
->to_memory_map
!= NULL
)
1879 result
= t
->to_memory_map (t
);
1883 qsort (VEC_address (mem_region_s
, result
),
1884 VEC_length (mem_region_s
, result
),
1885 sizeof (struct mem_region
), mem_region_cmp
);
1887 /* Check that regions do not overlap. Simultaneously assign
1888 a numbering for the "mem" commands to use to refer to
1891 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1893 this_one
->number
= ix
;
1895 if (last_one
&& last_one
->hi
> this_one
->lo
)
1897 warning (_("Overlapping regions in memory map: ignoring"));
1898 VEC_free (mem_region_s
, result
);
1901 last_one
= this_one
;
1908 target_flash_erase (ULONGEST address
, LONGEST length
)
1910 struct target_ops
*t
;
1912 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1913 if (t
->to_flash_erase
!= NULL
)
1916 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1917 hex_string (address
), phex (length
, 0));
1918 t
->to_flash_erase (t
, address
, length
);
1926 target_flash_done (void)
1928 struct target_ops
*t
;
1930 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1931 if (t
->to_flash_done
!= NULL
)
1934 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1935 t
->to_flash_done (t
);
1943 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1944 struct cmd_list_element
*c
, const char *value
)
1946 fprintf_filtered (file
,
1947 _("Mode for reading from readonly sections is %s.\n"),
1951 /* More generic transfers. */
1954 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1955 const char *annex
, gdb_byte
*readbuf
,
1956 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1958 if (object
== TARGET_OBJECT_MEMORY
1959 && ops
->deprecated_xfer_memory
!= NULL
)
1960 /* If available, fall back to the target's
1961 "deprecated_xfer_memory" method. */
1966 if (writebuf
!= NULL
)
1968 void *buffer
= xmalloc (len
);
1969 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1971 memcpy (buffer
, writebuf
, len
);
1972 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1973 1/*write*/, NULL
, ops
);
1974 do_cleanups (cleanup
);
1976 if (readbuf
!= NULL
)
1977 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1978 0/*read*/, NULL
, ops
);
1981 else if (xfered
== 0 && errno
== 0)
1982 /* "deprecated_xfer_memory" uses 0, cross checked against
1983 ERRNO as one indication of an error. */
1988 else if (ops
->beneath
!= NULL
)
1989 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1990 readbuf
, writebuf
, offset
, len
);
1995 /* The xfer_partial handler for the topmost target. Unlike the default,
1996 it does not need to handle memory specially; it just passes all
1997 requests down the stack. */
2000 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
2001 const char *annex
, gdb_byte
*readbuf
,
2002 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
2004 if (ops
->beneath
!= NULL
)
2005 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
2006 readbuf
, writebuf
, offset
, len
);
2011 /* Target vector read/write partial wrapper functions. */
2014 target_read_partial (struct target_ops
*ops
,
2015 enum target_object object
,
2016 const char *annex
, gdb_byte
*buf
,
2017 ULONGEST offset
, LONGEST len
)
2019 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
2023 target_write_partial (struct target_ops
*ops
,
2024 enum target_object object
,
2025 const char *annex
, const gdb_byte
*buf
,
2026 ULONGEST offset
, LONGEST len
)
2028 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
2031 /* Wrappers to perform the full transfer. */
2033 /* For docs on target_read see target.h. */
2036 target_read (struct target_ops
*ops
,
2037 enum target_object object
,
2038 const char *annex
, gdb_byte
*buf
,
2039 ULONGEST offset
, LONGEST len
)
2043 while (xfered
< len
)
2045 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
2046 (gdb_byte
*) buf
+ xfered
,
2047 offset
+ xfered
, len
- xfered
);
2049 /* Call an observer, notifying them of the xfer progress? */
2060 /* Assuming that the entire [begin, end) range of memory cannot be
2061 read, try to read whatever subrange is possible to read.
2063 The function returns, in RESULT, either zero or one memory block.
2064 If there's a readable subrange at the beginning, it is completely
2065 read and returned. Any further readable subrange will not be read.
2066 Otherwise, if there's a readable subrange at the end, it will be
2067 completely read and returned. Any readable subranges before it
2068 (obviously, not starting at the beginning), will be ignored. In
2069 other cases -- either no readable subrange, or readable subrange(s)
2070 that is neither at the beginning, or end, nothing is returned.
2072 The purpose of this function is to handle a read across a boundary
2073 of accessible memory in a case when memory map is not available.
2074 The above restrictions are fine for this case, but will give
2075 incorrect results if the memory is 'patchy'. However, supporting
2076 'patchy' memory would require trying to read every single byte,
2077 and it seems unacceptable solution. Explicit memory map is
2078 recommended for this case -- and target_read_memory_robust will
2079 take care of reading multiple ranges then. */
2082 read_whatever_is_readable (struct target_ops
*ops
,
2083 ULONGEST begin
, ULONGEST end
,
2084 VEC(memory_read_result_s
) **result
)
2086 gdb_byte
*buf
= xmalloc (end
- begin
);
2087 ULONGEST current_begin
= begin
;
2088 ULONGEST current_end
= end
;
2090 memory_read_result_s r
;
2092 /* If we previously failed to read 1 byte, nothing can be done here. */
2093 if (end
- begin
<= 1)
2099 /* Check that either first or the last byte is readable, and give up
2100 if not. This heuristic is meant to permit reading accessible memory
2101 at the boundary of accessible region. */
2102 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2103 buf
, begin
, 1) == 1)
2108 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2109 buf
+ (end
-begin
) - 1, end
- 1, 1) == 1)
2120 /* Loop invariant is that the [current_begin, current_end) was previously
2121 found to be not readable as a whole.
2123 Note loop condition -- if the range has 1 byte, we can't divide the range
2124 so there's no point trying further. */
2125 while (current_end
- current_begin
> 1)
2127 ULONGEST first_half_begin
, first_half_end
;
2128 ULONGEST second_half_begin
, second_half_end
;
2130 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2134 first_half_begin
= current_begin
;
2135 first_half_end
= middle
;
2136 second_half_begin
= middle
;
2137 second_half_end
= current_end
;
2141 first_half_begin
= middle
;
2142 first_half_end
= current_end
;
2143 second_half_begin
= current_begin
;
2144 second_half_end
= middle
;
2147 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2148 buf
+ (first_half_begin
- begin
),
2150 first_half_end
- first_half_begin
);
2152 if (xfer
== first_half_end
- first_half_begin
)
2154 /* This half reads up fine. So, the error must be in the
2156 current_begin
= second_half_begin
;
2157 current_end
= second_half_end
;
2161 /* This half is not readable. Because we've tried one byte, we
2162 know some part of this half if actually redable. Go to the next
2163 iteration to divide again and try to read.
2165 We don't handle the other half, because this function only tries
2166 to read a single readable subrange. */
2167 current_begin
= first_half_begin
;
2168 current_end
= first_half_end
;
2174 /* The [begin, current_begin) range has been read. */
2176 r
.end
= current_begin
;
2181 /* The [current_end, end) range has been read. */
2182 LONGEST rlen
= end
- current_end
;
2184 r
.data
= xmalloc (rlen
);
2185 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2186 r
.begin
= current_end
;
2190 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2194 free_memory_read_result_vector (void *x
)
2196 VEC(memory_read_result_s
) *v
= x
;
2197 memory_read_result_s
*current
;
2200 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2202 xfree (current
->data
);
2204 VEC_free (memory_read_result_s
, v
);
2207 VEC(memory_read_result_s
) *
2208 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2210 VEC(memory_read_result_s
) *result
= 0;
2213 while (xfered
< len
)
2215 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2218 /* If there is no explicit region, a fake one should be created. */
2219 gdb_assert (region
);
2221 if (region
->hi
== 0)
2222 rlen
= len
- xfered
;
2224 rlen
= region
->hi
- offset
;
2226 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2228 /* Cannot read this region. Note that we can end up here only
2229 if the region is explicitly marked inaccessible, or
2230 'inaccessible-by-default' is in effect. */
2235 LONGEST to_read
= min (len
- xfered
, rlen
);
2236 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2238 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2239 (gdb_byte
*) buffer
,
2240 offset
+ xfered
, to_read
);
2241 /* Call an observer, notifying them of the xfer progress? */
2244 /* Got an error reading full chunk. See if maybe we can read
2247 read_whatever_is_readable (ops
, offset
+ xfered
,
2248 offset
+ xfered
+ to_read
, &result
);
2253 struct memory_read_result r
;
2255 r
.begin
= offset
+ xfered
;
2256 r
.end
= r
.begin
+ xfer
;
2257 VEC_safe_push (memory_read_result_s
, result
, &r
);
2267 /* An alternative to target_write with progress callbacks. */
2270 target_write_with_progress (struct target_ops
*ops
,
2271 enum target_object object
,
2272 const char *annex
, const gdb_byte
*buf
,
2273 ULONGEST offset
, LONGEST len
,
2274 void (*progress
) (ULONGEST
, void *), void *baton
)
2278 /* Give the progress callback a chance to set up. */
2280 (*progress
) (0, baton
);
2282 while (xfered
< len
)
2284 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
2285 (gdb_byte
*) buf
+ xfered
,
2286 offset
+ xfered
, len
- xfered
);
2294 (*progress
) (xfer
, baton
);
2302 /* For docs on target_write see target.h. */
2305 target_write (struct target_ops
*ops
,
2306 enum target_object object
,
2307 const char *annex
, const gdb_byte
*buf
,
2308 ULONGEST offset
, LONGEST len
)
2310 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2314 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2315 the size of the transferred data. PADDING additional bytes are
2316 available in *BUF_P. This is a helper function for
2317 target_read_alloc; see the declaration of that function for more
2321 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2322 const char *annex
, gdb_byte
**buf_p
, int padding
)
2324 size_t buf_alloc
, buf_pos
;
2328 /* This function does not have a length parameter; it reads the
2329 entire OBJECT). Also, it doesn't support objects fetched partly
2330 from one target and partly from another (in a different stratum,
2331 e.g. a core file and an executable). Both reasons make it
2332 unsuitable for reading memory. */
2333 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2335 /* Start by reading up to 4K at a time. The target will throttle
2336 this number down if necessary. */
2338 buf
= xmalloc (buf_alloc
);
2342 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2343 buf_pos
, buf_alloc
- buf_pos
- padding
);
2346 /* An error occurred. */
2352 /* Read all there was. */
2362 /* If the buffer is filling up, expand it. */
2363 if (buf_alloc
< buf_pos
* 2)
2366 buf
= xrealloc (buf
, buf_alloc
);
2373 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2374 the size of the transferred data. See the declaration in "target.h"
2375 function for more information about the return value. */
2378 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2379 const char *annex
, gdb_byte
**buf_p
)
2381 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2384 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2385 returned as a string, allocated using xmalloc. If an error occurs
2386 or the transfer is unsupported, NULL is returned. Empty objects
2387 are returned as allocated but empty strings. A warning is issued
2388 if the result contains any embedded NUL bytes. */
2391 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2396 LONGEST i
, transferred
;
2398 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2399 bufstr
= (char *) buffer
;
2401 if (transferred
< 0)
2404 if (transferred
== 0)
2405 return xstrdup ("");
2407 bufstr
[transferred
] = 0;
2409 /* Check for embedded NUL bytes; but allow trailing NULs. */
2410 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2413 warning (_("target object %d, annex %s, "
2414 "contained unexpected null characters"),
2415 (int) object
, annex
? annex
: "(none)");
2422 /* Memory transfer methods. */
2425 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2428 /* This method is used to read from an alternate, non-current
2429 target. This read must bypass the overlay support (as symbols
2430 don't match this target), and GDB's internal cache (wrong cache
2431 for this target). */
2432 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2434 memory_error (EIO
, addr
);
2438 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2439 int len
, enum bfd_endian byte_order
)
2441 gdb_byte buf
[sizeof (ULONGEST
)];
2443 gdb_assert (len
<= sizeof (buf
));
2444 get_target_memory (ops
, addr
, buf
, len
);
2445 return extract_unsigned_integer (buf
, len
, byte_order
);
2449 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2450 struct bp_target_info
*bp_tgt
)
2452 if (!may_insert_breakpoints
)
2454 warning (_("May not insert breakpoints"));
2458 return (*current_target
.to_insert_breakpoint
) (gdbarch
, bp_tgt
);
2462 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2463 struct bp_target_info
*bp_tgt
)
2465 /* This is kind of a weird case to handle, but the permission might
2466 have been changed after breakpoints were inserted - in which case
2467 we should just take the user literally and assume that any
2468 breakpoints should be left in place. */
2469 if (!may_insert_breakpoints
)
2471 warning (_("May not remove breakpoints"));
2475 return (*current_target
.to_remove_breakpoint
) (gdbarch
, bp_tgt
);
2479 target_info (char *args
, int from_tty
)
2481 struct target_ops
*t
;
2482 int has_all_mem
= 0;
2484 if (symfile_objfile
!= NULL
)
2485 printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile
->name
);
2487 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2489 if (!(*t
->to_has_memory
) (t
))
2492 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2495 printf_unfiltered (_("\tWhile running this, "
2496 "GDB does not access memory from...\n"));
2497 printf_unfiltered ("%s:\n", t
->to_longname
);
2498 (t
->to_files_info
) (t
);
2499 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2503 /* This function is called before any new inferior is created, e.g.
2504 by running a program, attaching, or connecting to a target.
2505 It cleans up any state from previous invocations which might
2506 change between runs. This is a subset of what target_preopen
2507 resets (things which might change between targets). */
2510 target_pre_inferior (int from_tty
)
2512 /* Clear out solib state. Otherwise the solib state of the previous
2513 inferior might have survived and is entirely wrong for the new
2514 target. This has been observed on GNU/Linux using glibc 2.3. How
2526 Cannot access memory at address 0xdeadbeef
2529 /* In some OSs, the shared library list is the same/global/shared
2530 across inferiors. If code is shared between processes, so are
2531 memory regions and features. */
2532 if (!gdbarch_has_global_solist (target_gdbarch ()))
2534 no_shared_libraries (NULL
, from_tty
);
2536 invalidate_target_mem_regions ();
2538 target_clear_description ();
2541 agent_capability_invalidate ();
2544 /* Callback for iterate_over_inferiors. Gets rid of the given
2548 dispose_inferior (struct inferior
*inf
, void *args
)
2550 struct thread_info
*thread
;
2552 thread
= any_thread_of_process (inf
->pid
);
2555 switch_to_thread (thread
->ptid
);
2557 /* Core inferiors actually should be detached, not killed. */
2558 if (target_has_execution
)
2561 target_detach (NULL
, 0);
2567 /* This is to be called by the open routine before it does
2571 target_preopen (int from_tty
)
2575 if (have_inferiors ())
2578 || !have_live_inferiors ()
2579 || query (_("A program is being debugged already. Kill it? ")))
2580 iterate_over_inferiors (dispose_inferior
, NULL
);
2582 error (_("Program not killed."));
2585 /* Calling target_kill may remove the target from the stack. But if
2586 it doesn't (which seems like a win for UDI), remove it now. */
2587 /* Leave the exec target, though. The user may be switching from a
2588 live process to a core of the same program. */
2589 pop_all_targets_above (file_stratum
);
2591 target_pre_inferior (from_tty
);
2594 /* Detach a target after doing deferred register stores. */
2597 target_detach (char *args
, int from_tty
)
2599 struct target_ops
* t
;
2601 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2602 /* Don't remove global breakpoints here. They're removed on
2603 disconnection from the target. */
2606 /* If we're in breakpoints-always-inserted mode, have to remove
2607 them before detaching. */
2608 remove_breakpoints_pid (PIDGET (inferior_ptid
));
2610 prepare_for_detach ();
2612 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2614 if (t
->to_detach
!= NULL
)
2616 t
->to_detach (t
, args
, from_tty
);
2618 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2624 internal_error (__FILE__
, __LINE__
, _("could not find a target to detach"));
2628 target_disconnect (char *args
, int from_tty
)
2630 struct target_ops
*t
;
2632 /* If we're in breakpoints-always-inserted mode or if breakpoints
2633 are global across processes, we have to remove them before
2635 remove_breakpoints ();
2637 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2638 if (t
->to_disconnect
!= NULL
)
2641 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2643 t
->to_disconnect (t
, args
, from_tty
);
2651 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2653 struct target_ops
*t
;
2655 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2657 if (t
->to_wait
!= NULL
)
2659 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2663 char *status_string
;
2664 char *options_string
;
2666 status_string
= target_waitstatus_to_string (status
);
2667 options_string
= target_options_to_string (options
);
2668 fprintf_unfiltered (gdb_stdlog
,
2669 "target_wait (%d, status, options={%s})"
2671 PIDGET (ptid
), options_string
,
2672 PIDGET (retval
), status_string
);
2673 xfree (status_string
);
2674 xfree (options_string
);
2685 target_pid_to_str (ptid_t ptid
)
2687 struct target_ops
*t
;
2689 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2691 if (t
->to_pid_to_str
!= NULL
)
2692 return (*t
->to_pid_to_str
) (t
, ptid
);
2695 return normal_pid_to_str (ptid
);
2699 target_thread_name (struct thread_info
*info
)
2701 struct target_ops
*t
;
2703 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2705 if (t
->to_thread_name
!= NULL
)
2706 return (*t
->to_thread_name
) (info
);
2713 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2715 struct target_ops
*t
;
2717 target_dcache_invalidate ();
2719 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2721 if (t
->to_resume
!= NULL
)
2723 t
->to_resume (t
, ptid
, step
, signal
);
2725 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2727 step
? "step" : "continue",
2728 gdb_signal_to_name (signal
));
2730 registers_changed_ptid (ptid
);
2731 set_executing (ptid
, 1);
2732 set_running (ptid
, 1);
2733 clear_inline_frame_state (ptid
);
2742 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2744 struct target_ops
*t
;
2746 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2748 if (t
->to_pass_signals
!= NULL
)
2754 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2757 for (i
= 0; i
< numsigs
; i
++)
2758 if (pass_signals
[i
])
2759 fprintf_unfiltered (gdb_stdlog
, " %s",
2760 gdb_signal_to_name (i
));
2762 fprintf_unfiltered (gdb_stdlog
, " })\n");
2765 (*t
->to_pass_signals
) (numsigs
, pass_signals
);
2772 target_program_signals (int numsigs
, unsigned char *program_signals
)
2774 struct target_ops
*t
;
2776 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2778 if (t
->to_program_signals
!= NULL
)
2784 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2787 for (i
= 0; i
< numsigs
; i
++)
2788 if (program_signals
[i
])
2789 fprintf_unfiltered (gdb_stdlog
, " %s",
2790 gdb_signal_to_name (i
));
2792 fprintf_unfiltered (gdb_stdlog
, " })\n");
2795 (*t
->to_program_signals
) (numsigs
, program_signals
);
2801 /* Look through the list of possible targets for a target that can
2805 target_follow_fork (int follow_child
)
2807 struct target_ops
*t
;
2809 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2811 if (t
->to_follow_fork
!= NULL
)
2813 int retval
= t
->to_follow_fork (t
, follow_child
);
2816 fprintf_unfiltered (gdb_stdlog
, "target_follow_fork (%d) = %d\n",
2817 follow_child
, retval
);
2822 /* Some target returned a fork event, but did not know how to follow it. */
2823 internal_error (__FILE__
, __LINE__
,
2824 _("could not find a target to follow fork"));
2828 target_mourn_inferior (void)
2830 struct target_ops
*t
;
2832 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2834 if (t
->to_mourn_inferior
!= NULL
)
2836 t
->to_mourn_inferior (t
);
2838 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2840 /* We no longer need to keep handles on any of the object files.
2841 Make sure to release them to avoid unnecessarily locking any
2842 of them while we're not actually debugging. */
2843 bfd_cache_close_all ();
2849 internal_error (__FILE__
, __LINE__
,
2850 _("could not find a target to follow mourn inferior"));
2853 /* Look for a target which can describe architectural features, starting
2854 from TARGET. If we find one, return its description. */
2856 const struct target_desc
*
2857 target_read_description (struct target_ops
*target
)
2859 struct target_ops
*t
;
2861 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2862 if (t
->to_read_description
!= NULL
)
2864 const struct target_desc
*tdesc
;
2866 tdesc
= t
->to_read_description (t
);
2874 /* The default implementation of to_search_memory.
2875 This implements a basic search of memory, reading target memory and
2876 performing the search here (as opposed to performing the search in on the
2877 target side with, for example, gdbserver). */
2880 simple_search_memory (struct target_ops
*ops
,
2881 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2882 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2883 CORE_ADDR
*found_addrp
)
2885 /* NOTE: also defined in find.c testcase. */
2886 #define SEARCH_CHUNK_SIZE 16000
2887 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2888 /* Buffer to hold memory contents for searching. */
2889 gdb_byte
*search_buf
;
2890 unsigned search_buf_size
;
2891 struct cleanup
*old_cleanups
;
2893 search_buf_size
= chunk_size
+ pattern_len
- 1;
2895 /* No point in trying to allocate a buffer larger than the search space. */
2896 if (search_space_len
< search_buf_size
)
2897 search_buf_size
= search_space_len
;
2899 search_buf
= malloc (search_buf_size
);
2900 if (search_buf
== NULL
)
2901 error (_("Unable to allocate memory to perform the search."));
2902 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2904 /* Prime the search buffer. */
2906 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2907 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2909 warning (_("Unable to access %s bytes of target "
2910 "memory at %s, halting search."),
2911 pulongest (search_buf_size
), hex_string (start_addr
));
2912 do_cleanups (old_cleanups
);
2916 /* Perform the search.
2918 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2919 When we've scanned N bytes we copy the trailing bytes to the start and
2920 read in another N bytes. */
2922 while (search_space_len
>= pattern_len
)
2924 gdb_byte
*found_ptr
;
2925 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2927 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2928 pattern
, pattern_len
);
2930 if (found_ptr
!= NULL
)
2932 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2934 *found_addrp
= found_addr
;
2935 do_cleanups (old_cleanups
);
2939 /* Not found in this chunk, skip to next chunk. */
2941 /* Don't let search_space_len wrap here, it's unsigned. */
2942 if (search_space_len
>= chunk_size
)
2943 search_space_len
-= chunk_size
;
2945 search_space_len
= 0;
2947 if (search_space_len
>= pattern_len
)
2949 unsigned keep_len
= search_buf_size
- chunk_size
;
2950 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2953 /* Copy the trailing part of the previous iteration to the front
2954 of the buffer for the next iteration. */
2955 gdb_assert (keep_len
== pattern_len
- 1);
2956 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2958 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2960 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2961 search_buf
+ keep_len
, read_addr
,
2962 nr_to_read
) != nr_to_read
)
2964 warning (_("Unable to access %s bytes of target "
2965 "memory at %s, halting search."),
2966 plongest (nr_to_read
),
2967 hex_string (read_addr
));
2968 do_cleanups (old_cleanups
);
2972 start_addr
+= chunk_size
;
2978 do_cleanups (old_cleanups
);
2982 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2983 sequence of bytes in PATTERN with length PATTERN_LEN.
2985 The result is 1 if found, 0 if not found, and -1 if there was an error
2986 requiring halting of the search (e.g. memory read error).
2987 If the pattern is found the address is recorded in FOUND_ADDRP. */
2990 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2991 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2992 CORE_ADDR
*found_addrp
)
2994 struct target_ops
*t
;
2997 /* We don't use INHERIT to set current_target.to_search_memory,
2998 so we have to scan the target stack and handle targetdebug
3002 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
3003 hex_string (start_addr
));
3005 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3006 if (t
->to_search_memory
!= NULL
)
3011 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
3012 pattern
, pattern_len
, found_addrp
);
3016 /* If a special version of to_search_memory isn't available, use the
3018 found
= simple_search_memory (current_target
.beneath
,
3019 start_addr
, search_space_len
,
3020 pattern
, pattern_len
, found_addrp
);
3024 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
3029 /* Look through the currently pushed targets. If none of them will
3030 be able to restart the currently running process, issue an error
3034 target_require_runnable (void)
3036 struct target_ops
*t
;
3038 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3040 /* If this target knows how to create a new program, then
3041 assume we will still be able to after killing the current
3042 one. Either killing and mourning will not pop T, or else
3043 find_default_run_target will find it again. */
3044 if (t
->to_create_inferior
!= NULL
)
3047 /* Do not worry about thread_stratum targets that can not
3048 create inferiors. Assume they will be pushed again if
3049 necessary, and continue to the process_stratum. */
3050 if (t
->to_stratum
== thread_stratum
3051 || t
->to_stratum
== arch_stratum
)
3054 error (_("The \"%s\" target does not support \"run\". "
3055 "Try \"help target\" or \"continue\"."),
3059 /* This function is only called if the target is running. In that
3060 case there should have been a process_stratum target and it
3061 should either know how to create inferiors, or not... */
3062 internal_error (__FILE__
, __LINE__
, _("No targets found"));
3065 /* Look through the list of possible targets for a target that can
3066 execute a run or attach command without any other data. This is
3067 used to locate the default process stratum.
3069 If DO_MESG is not NULL, the result is always valid (error() is
3070 called for errors); else, return NULL on error. */
3072 static struct target_ops
*
3073 find_default_run_target (char *do_mesg
)
3075 struct target_ops
**t
;
3076 struct target_ops
*runable
= NULL
;
3081 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3084 if ((*t
)->to_can_run
&& target_can_run (*t
))
3094 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3103 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3105 struct target_ops
*t
;
3107 t
= find_default_run_target ("attach");
3108 (t
->to_attach
) (t
, args
, from_tty
);
3113 find_default_create_inferior (struct target_ops
*ops
,
3114 char *exec_file
, char *allargs
, char **env
,
3117 struct target_ops
*t
;
3119 t
= find_default_run_target ("run");
3120 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3125 find_default_can_async_p (void)
3127 struct target_ops
*t
;
3129 /* This may be called before the target is pushed on the stack;
3130 look for the default process stratum. If there's none, gdb isn't
3131 configured with a native debugger, and target remote isn't
3133 t
= find_default_run_target (NULL
);
3134 if (t
&& t
->to_can_async_p
)
3135 return (t
->to_can_async_p
) ();
3140 find_default_is_async_p (void)
3142 struct target_ops
*t
;
3144 /* This may be called before the target is pushed on the stack;
3145 look for the default process stratum. If there's none, gdb isn't
3146 configured with a native debugger, and target remote isn't
3148 t
= find_default_run_target (NULL
);
3149 if (t
&& t
->to_is_async_p
)
3150 return (t
->to_is_async_p
) ();
3155 find_default_supports_non_stop (void)
3157 struct target_ops
*t
;
3159 t
= find_default_run_target (NULL
);
3160 if (t
&& t
->to_supports_non_stop
)
3161 return (t
->to_supports_non_stop
) ();
3166 target_supports_non_stop (void)
3168 struct target_ops
*t
;
3170 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3171 if (t
->to_supports_non_stop
)
3172 return t
->to_supports_non_stop ();
3177 /* Implement the "info proc" command. */
3180 target_info_proc (char *args
, enum info_proc_what what
)
3182 struct target_ops
*t
;
3184 /* If we're already connected to something that can get us OS
3185 related data, use it. Otherwise, try using the native
3187 if (current_target
.to_stratum
>= process_stratum
)
3188 t
= current_target
.beneath
;
3190 t
= find_default_run_target (NULL
);
3192 for (; t
!= NULL
; t
= t
->beneath
)
3194 if (t
->to_info_proc
!= NULL
)
3196 t
->to_info_proc (t
, args
, what
);
3199 fprintf_unfiltered (gdb_stdlog
,
3200 "target_info_proc (\"%s\", %d)\n", args
, what
);
3210 find_default_supports_disable_randomization (void)
3212 struct target_ops
*t
;
3214 t
= find_default_run_target (NULL
);
3215 if (t
&& t
->to_supports_disable_randomization
)
3216 return (t
->to_supports_disable_randomization
) ();
3221 target_supports_disable_randomization (void)
3223 struct target_ops
*t
;
3225 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3226 if (t
->to_supports_disable_randomization
)
3227 return t
->to_supports_disable_randomization ();
3233 target_get_osdata (const char *type
)
3235 struct target_ops
*t
;
3237 /* If we're already connected to something that can get us OS
3238 related data, use it. Otherwise, try using the native
3240 if (current_target
.to_stratum
>= process_stratum
)
3241 t
= current_target
.beneath
;
3243 t
= find_default_run_target ("get OS data");
3248 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3251 /* Determine the current address space of thread PTID. */
3253 struct address_space
*
3254 target_thread_address_space (ptid_t ptid
)
3256 struct address_space
*aspace
;
3257 struct inferior
*inf
;
3258 struct target_ops
*t
;
3260 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3262 if (t
->to_thread_address_space
!= NULL
)
3264 aspace
= t
->to_thread_address_space (t
, ptid
);
3265 gdb_assert (aspace
);
3268 fprintf_unfiltered (gdb_stdlog
,
3269 "target_thread_address_space (%s) = %d\n",
3270 target_pid_to_str (ptid
),
3271 address_space_num (aspace
));
3276 /* Fall-back to the "main" address space of the inferior. */
3277 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3279 if (inf
== NULL
|| inf
->aspace
== NULL
)
3280 internal_error (__FILE__
, __LINE__
,
3281 _("Can't determine the current "
3282 "address space of thread %s\n"),
3283 target_pid_to_str (ptid
));
3289 /* Target file operations. */
3291 static struct target_ops
*
3292 default_fileio_target (void)
3294 /* If we're already connected to something that can perform
3295 file I/O, use it. Otherwise, try using the native target. */
3296 if (current_target
.to_stratum
>= process_stratum
)
3297 return current_target
.beneath
;
3299 return find_default_run_target ("file I/O");
3302 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3303 target file descriptor, or -1 if an error occurs (and set
3306 target_fileio_open (const char *filename
, int flags
, int mode
,
3309 struct target_ops
*t
;
3311 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3313 if (t
->to_fileio_open
!= NULL
)
3315 int fd
= t
->to_fileio_open (filename
, flags
, mode
, target_errno
);
3318 fprintf_unfiltered (gdb_stdlog
,
3319 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3320 filename
, flags
, mode
,
3321 fd
, fd
!= -1 ? 0 : *target_errno
);
3326 *target_errno
= FILEIO_ENOSYS
;
3330 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3331 Return the number of bytes written, or -1 if an error occurs
3332 (and set *TARGET_ERRNO). */
3334 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3335 ULONGEST offset
, int *target_errno
)
3337 struct target_ops
*t
;
3339 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3341 if (t
->to_fileio_pwrite
!= NULL
)
3343 int ret
= t
->to_fileio_pwrite (fd
, write_buf
, len
, offset
,
3347 fprintf_unfiltered (gdb_stdlog
,
3348 "target_fileio_pwrite (%d,...,%d,%s) "
3350 fd
, len
, pulongest (offset
),
3351 ret
, ret
!= -1 ? 0 : *target_errno
);
3356 *target_errno
= FILEIO_ENOSYS
;
3360 /* Read up to LEN bytes FD on the target into READ_BUF.
3361 Return the number of bytes read, or -1 if an error occurs
3362 (and set *TARGET_ERRNO). */
3364 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3365 ULONGEST offset
, int *target_errno
)
3367 struct target_ops
*t
;
3369 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3371 if (t
->to_fileio_pread
!= NULL
)
3373 int ret
= t
->to_fileio_pread (fd
, read_buf
, len
, offset
,
3377 fprintf_unfiltered (gdb_stdlog
,
3378 "target_fileio_pread (%d,...,%d,%s) "
3380 fd
, len
, pulongest (offset
),
3381 ret
, ret
!= -1 ? 0 : *target_errno
);
3386 *target_errno
= FILEIO_ENOSYS
;
3390 /* Close FD on the target. Return 0, or -1 if an error occurs
3391 (and set *TARGET_ERRNO). */
3393 target_fileio_close (int fd
, int *target_errno
)
3395 struct target_ops
*t
;
3397 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3399 if (t
->to_fileio_close
!= NULL
)
3401 int ret
= t
->to_fileio_close (fd
, target_errno
);
3404 fprintf_unfiltered (gdb_stdlog
,
3405 "target_fileio_close (%d) = %d (%d)\n",
3406 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3411 *target_errno
= FILEIO_ENOSYS
;
3415 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3416 occurs (and set *TARGET_ERRNO). */
3418 target_fileio_unlink (const char *filename
, int *target_errno
)
3420 struct target_ops
*t
;
3422 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3424 if (t
->to_fileio_unlink
!= NULL
)
3426 int ret
= t
->to_fileio_unlink (filename
, target_errno
);
3429 fprintf_unfiltered (gdb_stdlog
,
3430 "target_fileio_unlink (%s) = %d (%d)\n",
3431 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3436 *target_errno
= FILEIO_ENOSYS
;
3440 /* Read value of symbolic link FILENAME on the target. Return a
3441 null-terminated string allocated via xmalloc, or NULL if an error
3442 occurs (and set *TARGET_ERRNO). */
3444 target_fileio_readlink (const char *filename
, int *target_errno
)
3446 struct target_ops
*t
;
3448 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3450 if (t
->to_fileio_readlink
!= NULL
)
3452 char *ret
= t
->to_fileio_readlink (filename
, target_errno
);
3455 fprintf_unfiltered (gdb_stdlog
,
3456 "target_fileio_readlink (%s) = %s (%d)\n",
3457 filename
, ret
? ret
: "(nil)",
3458 ret
? 0 : *target_errno
);
3463 *target_errno
= FILEIO_ENOSYS
;
3468 target_fileio_close_cleanup (void *opaque
)
3470 int fd
= *(int *) opaque
;
3473 target_fileio_close (fd
, &target_errno
);
3476 /* Read target file FILENAME. Store the result in *BUF_P and
3477 return the size of the transferred data. PADDING additional bytes are
3478 available in *BUF_P. This is a helper function for
3479 target_fileio_read_alloc; see the declaration of that function for more
3483 target_fileio_read_alloc_1 (const char *filename
,
3484 gdb_byte
**buf_p
, int padding
)
3486 struct cleanup
*close_cleanup
;
3487 size_t buf_alloc
, buf_pos
;
3493 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3497 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3499 /* Start by reading up to 4K at a time. The target will throttle
3500 this number down if necessary. */
3502 buf
= xmalloc (buf_alloc
);
3506 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3507 buf_alloc
- buf_pos
- padding
, buf_pos
,
3511 /* An error occurred. */
3512 do_cleanups (close_cleanup
);
3518 /* Read all there was. */
3519 do_cleanups (close_cleanup
);
3529 /* If the buffer is filling up, expand it. */
3530 if (buf_alloc
< buf_pos
* 2)
3533 buf
= xrealloc (buf
, buf_alloc
);
3540 /* Read target file FILENAME. Store the result in *BUF_P and return
3541 the size of the transferred data. See the declaration in "target.h"
3542 function for more information about the return value. */
3545 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3547 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3550 /* Read target file FILENAME. The result is NUL-terminated and
3551 returned as a string, allocated using xmalloc. If an error occurs
3552 or the transfer is unsupported, NULL is returned. Empty objects
3553 are returned as allocated but empty strings. A warning is issued
3554 if the result contains any embedded NUL bytes. */
3557 target_fileio_read_stralloc (const char *filename
)
3561 LONGEST i
, transferred
;
3563 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3564 bufstr
= (char *) buffer
;
3566 if (transferred
< 0)
3569 if (transferred
== 0)
3570 return xstrdup ("");
3572 bufstr
[transferred
] = 0;
3574 /* Check for embedded NUL bytes; but allow trailing NULs. */
3575 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3578 warning (_("target file %s "
3579 "contained unexpected null characters"),
3589 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3591 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3595 default_watchpoint_addr_within_range (struct target_ops
*target
,
3597 CORE_ADDR start
, int length
)
3599 return addr
>= start
&& addr
< start
+ length
;
3602 static struct gdbarch
*
3603 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3605 return target_gdbarch ();
3621 return_minus_one (void)
3627 * Find the next target down the stack from the specified target.
3631 find_target_beneath (struct target_ops
*t
)
3637 /* The inferior process has died. Long live the inferior! */
3640 generic_mourn_inferior (void)
3644 ptid
= inferior_ptid
;
3645 inferior_ptid
= null_ptid
;
3647 /* Mark breakpoints uninserted in case something tries to delete a
3648 breakpoint while we delete the inferior's threads (which would
3649 fail, since the inferior is long gone). */
3650 mark_breakpoints_out ();
3652 if (!ptid_equal (ptid
, null_ptid
))
3654 int pid
= ptid_get_pid (ptid
);
3655 exit_inferior (pid
);
3658 /* Note this wipes step-resume breakpoints, so needs to be done
3659 after exit_inferior, which ends up referencing the step-resume
3660 breakpoints through clear_thread_inferior_resources. */
3661 breakpoint_init_inferior (inf_exited
);
3663 registers_changed ();
3665 reopen_exec_file ();
3666 reinit_frame_cache ();
3668 if (deprecated_detach_hook
)
3669 deprecated_detach_hook ();
3672 /* Convert a normal process ID to a string. Returns the string in a
3676 normal_pid_to_str (ptid_t ptid
)
3678 static char buf
[32];
3680 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3685 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3687 return normal_pid_to_str (ptid
);
3690 /* Error-catcher for target_find_memory_regions. */
3692 dummy_find_memory_regions (find_memory_region_ftype ignore1
, void *ignore2
)
3694 error (_("Command not implemented for this target."));
3698 /* Error-catcher for target_make_corefile_notes. */
3700 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
3702 error (_("Command not implemented for this target."));
3706 /* Error-catcher for target_get_bookmark. */
3708 dummy_get_bookmark (char *ignore1
, int ignore2
)
3714 /* Error-catcher for target_goto_bookmark. */
3716 dummy_goto_bookmark (gdb_byte
*ignore
, int from_tty
)
3721 /* Set up the handful of non-empty slots needed by the dummy target
3725 init_dummy_target (void)
3727 dummy_target
.to_shortname
= "None";
3728 dummy_target
.to_longname
= "None";
3729 dummy_target
.to_doc
= "";
3730 dummy_target
.to_attach
= find_default_attach
;
3731 dummy_target
.to_detach
=
3732 (void (*)(struct target_ops
*, char *, int))target_ignore
;
3733 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3734 dummy_target
.to_can_async_p
= find_default_can_async_p
;
3735 dummy_target
.to_is_async_p
= find_default_is_async_p
;
3736 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3737 dummy_target
.to_supports_disable_randomization
3738 = find_default_supports_disable_randomization
;
3739 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3740 dummy_target
.to_stratum
= dummy_stratum
;
3741 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
3742 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
3743 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
3744 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
3745 dummy_target
.to_xfer_partial
= default_xfer_partial
;
3746 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3747 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3748 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3749 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3750 dummy_target
.to_has_execution
3751 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3752 dummy_target
.to_stopped_by_watchpoint
= return_zero
;
3753 dummy_target
.to_stopped_data_address
=
3754 (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
;
3755 dummy_target
.to_magic
= OPS_MAGIC
;
3759 debug_to_open (char *args
, int from_tty
)
3761 debug_target
.to_open (args
, from_tty
);
3763 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3767 target_close (struct target_ops
*targ
)
3769 gdb_assert (!target_is_pushed (targ
));
3771 if (targ
->to_xclose
!= NULL
)
3772 targ
->to_xclose (targ
);
3773 else if (targ
->to_close
!= NULL
)
3777 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3781 target_attach (char *args
, int from_tty
)
3783 struct target_ops
*t
;
3785 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3787 if (t
->to_attach
!= NULL
)
3789 t
->to_attach (t
, args
, from_tty
);
3791 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3797 internal_error (__FILE__
, __LINE__
,
3798 _("could not find a target to attach"));
3802 target_thread_alive (ptid_t ptid
)
3804 struct target_ops
*t
;
3806 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3808 if (t
->to_thread_alive
!= NULL
)
3812 retval
= t
->to_thread_alive (t
, ptid
);
3814 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3815 PIDGET (ptid
), retval
);
3825 target_find_new_threads (void)
3827 struct target_ops
*t
;
3829 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3831 if (t
->to_find_new_threads
!= NULL
)
3833 t
->to_find_new_threads (t
);
3835 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3843 target_stop (ptid_t ptid
)
3847 warning (_("May not interrupt or stop the target, ignoring attempt"));
3851 (*current_target
.to_stop
) (ptid
);
3855 debug_to_post_attach (int pid
)
3857 debug_target
.to_post_attach (pid
);
3859 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3862 /* Concatenate ELEM to LIST, a comma separate list, and return the
3863 result. The LIST incoming argument is released. */
3866 str_comma_list_concat_elem (char *list
, const char *elem
)
3869 return xstrdup (elem
);
3871 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3874 /* Helper for target_options_to_string. If OPT is present in
3875 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3876 Returns the new resulting string. OPT is removed from
3880 do_option (int *target_options
, char *ret
,
3881 int opt
, char *opt_str
)
3883 if ((*target_options
& opt
) != 0)
3885 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3886 *target_options
&= ~opt
;
3893 target_options_to_string (int target_options
)
3897 #define DO_TARG_OPTION(OPT) \
3898 ret = do_option (&target_options, ret, OPT, #OPT)
3900 DO_TARG_OPTION (TARGET_WNOHANG
);
3902 if (target_options
!= 0)
3903 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3911 debug_print_register (const char * func
,
3912 struct regcache
*regcache
, int regno
)
3914 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3916 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3917 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3918 && gdbarch_register_name (gdbarch
, regno
) != NULL
3919 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3920 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3921 gdbarch_register_name (gdbarch
, regno
));
3923 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3924 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3926 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3927 int i
, size
= register_size (gdbarch
, regno
);
3928 gdb_byte buf
[MAX_REGISTER_SIZE
];
3930 regcache_raw_collect (regcache
, regno
, buf
);
3931 fprintf_unfiltered (gdb_stdlog
, " = ");
3932 for (i
= 0; i
< size
; i
++)
3934 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3936 if (size
<= sizeof (LONGEST
))
3938 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3940 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3941 core_addr_to_string_nz (val
), plongest (val
));
3944 fprintf_unfiltered (gdb_stdlog
, "\n");
3948 target_fetch_registers (struct regcache
*regcache
, int regno
)
3950 struct target_ops
*t
;
3952 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3954 if (t
->to_fetch_registers
!= NULL
)
3956 t
->to_fetch_registers (t
, regcache
, regno
);
3958 debug_print_register ("target_fetch_registers", regcache
, regno
);
3965 target_store_registers (struct regcache
*regcache
, int regno
)
3967 struct target_ops
*t
;
3969 if (!may_write_registers
)
3970 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3972 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3974 if (t
->to_store_registers
!= NULL
)
3976 t
->to_store_registers (t
, regcache
, regno
);
3979 debug_print_register ("target_store_registers", regcache
, regno
);
3989 target_core_of_thread (ptid_t ptid
)
3991 struct target_ops
*t
;
3993 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3995 if (t
->to_core_of_thread
!= NULL
)
3997 int retval
= t
->to_core_of_thread (t
, ptid
);
4000 fprintf_unfiltered (gdb_stdlog
,
4001 "target_core_of_thread (%d) = %d\n",
4002 PIDGET (ptid
), retval
);
4011 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
4013 struct target_ops
*t
;
4015 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4017 if (t
->to_verify_memory
!= NULL
)
4019 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
4022 fprintf_unfiltered (gdb_stdlog
,
4023 "target_verify_memory (%s, %s) = %d\n",
4024 paddress (target_gdbarch (), memaddr
),
4034 /* The documentation for this function is in its prototype declaration in
4038 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4040 struct target_ops
*t
;
4042 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4043 if (t
->to_insert_mask_watchpoint
!= NULL
)
4047 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
4050 fprintf_unfiltered (gdb_stdlog
, "\
4051 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
4052 core_addr_to_string (addr
),
4053 core_addr_to_string (mask
), rw
, ret
);
4061 /* The documentation for this function is in its prototype declaration in
4065 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4067 struct target_ops
*t
;
4069 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4070 if (t
->to_remove_mask_watchpoint
!= NULL
)
4074 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
4077 fprintf_unfiltered (gdb_stdlog
, "\
4078 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
4079 core_addr_to_string (addr
),
4080 core_addr_to_string (mask
), rw
, ret
);
4088 /* The documentation for this function is in its prototype declaration
4092 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4094 struct target_ops
*t
;
4096 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4097 if (t
->to_masked_watch_num_registers
!= NULL
)
4098 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4103 /* The documentation for this function is in its prototype declaration
4107 target_ranged_break_num_registers (void)
4109 struct target_ops
*t
;
4111 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4112 if (t
->to_ranged_break_num_registers
!= NULL
)
4113 return t
->to_ranged_break_num_registers (t
);
4121 target_supports_btrace (void)
4123 struct target_ops
*t
;
4125 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4126 if (t
->to_supports_btrace
!= NULL
)
4127 return t
->to_supports_btrace ();
4134 struct btrace_target_info
*
4135 target_enable_btrace (ptid_t ptid
)
4137 struct target_ops
*t
;
4139 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4140 if (t
->to_enable_btrace
!= NULL
)
4141 return t
->to_enable_btrace (ptid
);
4150 target_disable_btrace (struct btrace_target_info
*btinfo
)
4152 struct target_ops
*t
;
4154 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4155 if (t
->to_disable_btrace
!= NULL
)
4156 return t
->to_disable_btrace (btinfo
);
4164 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4166 struct target_ops
*t
;
4168 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4169 if (t
->to_teardown_btrace
!= NULL
)
4170 return t
->to_teardown_btrace (btinfo
);
4177 VEC (btrace_block_s
) *
4178 target_read_btrace (struct btrace_target_info
*btinfo
,
4179 enum btrace_read_type type
)
4181 struct target_ops
*t
;
4183 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4184 if (t
->to_read_btrace
!= NULL
)
4185 return t
->to_read_btrace (btinfo
, type
);
4194 target_stop_recording (void)
4196 struct target_ops
*t
;
4198 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4199 if (t
->to_stop_recording
!= NULL
)
4201 t
->to_stop_recording ();
4205 /* This is optional. */
4211 target_info_record (void)
4213 struct target_ops
*t
;
4215 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4216 if (t
->to_info_record
!= NULL
)
4218 t
->to_info_record ();
4228 target_save_record (const char *filename
)
4230 struct target_ops
*t
;
4232 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4233 if (t
->to_save_record
!= NULL
)
4235 t
->to_save_record (filename
);
4245 target_supports_delete_record (void)
4247 struct target_ops
*t
;
4249 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4250 if (t
->to_delete_record
!= NULL
)
4259 target_delete_record (void)
4261 struct target_ops
*t
;
4263 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4264 if (t
->to_delete_record
!= NULL
)
4266 t
->to_delete_record ();
4276 target_record_is_replaying (void)
4278 struct target_ops
*t
;
4280 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4281 if (t
->to_record_is_replaying
!= NULL
)
4282 return t
->to_record_is_replaying ();
4290 target_goto_record_begin (void)
4292 struct target_ops
*t
;
4294 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4295 if (t
->to_goto_record_begin
!= NULL
)
4297 t
->to_goto_record_begin ();
4307 target_goto_record_end (void)
4309 struct target_ops
*t
;
4311 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4312 if (t
->to_goto_record_end
!= NULL
)
4314 t
->to_goto_record_end ();
4324 target_goto_record (ULONGEST insn
)
4326 struct target_ops
*t
;
4328 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4329 if (t
->to_goto_record
!= NULL
)
4331 t
->to_goto_record (insn
);
4341 target_insn_history (int size
, int flags
)
4343 struct target_ops
*t
;
4345 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4346 if (t
->to_insn_history
!= NULL
)
4348 t
->to_insn_history (size
, flags
);
4358 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4360 struct target_ops
*t
;
4362 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4363 if (t
->to_insn_history_from
!= NULL
)
4365 t
->to_insn_history_from (from
, size
, flags
);
4375 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4377 struct target_ops
*t
;
4379 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4380 if (t
->to_insn_history_range
!= NULL
)
4382 t
->to_insn_history_range (begin
, end
, flags
);
4392 target_call_history (int size
, int flags
)
4394 struct target_ops
*t
;
4396 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4397 if (t
->to_call_history
!= NULL
)
4399 t
->to_call_history (size
, flags
);
4409 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4411 struct target_ops
*t
;
4413 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4414 if (t
->to_call_history_from
!= NULL
)
4416 t
->to_call_history_from (begin
, size
, flags
);
4426 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4428 struct target_ops
*t
;
4430 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4431 if (t
->to_call_history_range
!= NULL
)
4433 t
->to_call_history_range (begin
, end
, flags
);
4441 debug_to_prepare_to_store (struct regcache
*regcache
)
4443 debug_target
.to_prepare_to_store (regcache
);
4445 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4449 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4450 int write
, struct mem_attrib
*attrib
,
4451 struct target_ops
*target
)
4455 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4458 fprintf_unfiltered (gdb_stdlog
,
4459 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4460 paddress (target_gdbarch (), memaddr
), len
,
4461 write
? "write" : "read", retval
);
4467 fputs_unfiltered (", bytes =", gdb_stdlog
);
4468 for (i
= 0; i
< retval
; i
++)
4470 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4472 if (targetdebug
< 2 && i
> 0)
4474 fprintf_unfiltered (gdb_stdlog
, " ...");
4477 fprintf_unfiltered (gdb_stdlog
, "\n");
4480 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4484 fputc_unfiltered ('\n', gdb_stdlog
);
4490 debug_to_files_info (struct target_ops
*target
)
4492 debug_target
.to_files_info (target
);
4494 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4498 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
4499 struct bp_target_info
*bp_tgt
)
4503 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
4505 fprintf_unfiltered (gdb_stdlog
,
4506 "target_insert_breakpoint (%s, xxx) = %ld\n",
4507 core_addr_to_string (bp_tgt
->placed_address
),
4508 (unsigned long) retval
);
4513 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
4514 struct bp_target_info
*bp_tgt
)
4518 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
4520 fprintf_unfiltered (gdb_stdlog
,
4521 "target_remove_breakpoint (%s, xxx) = %ld\n",
4522 core_addr_to_string (bp_tgt
->placed_address
),
4523 (unsigned long) retval
);
4528 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
4532 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
4534 fprintf_unfiltered (gdb_stdlog
,
4535 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4536 (unsigned long) type
,
4537 (unsigned long) cnt
,
4538 (unsigned long) from_tty
,
4539 (unsigned long) retval
);
4544 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
4548 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
4550 fprintf_unfiltered (gdb_stdlog
,
4551 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4552 core_addr_to_string (addr
), (unsigned long) len
,
4553 core_addr_to_string (retval
));
4558 debug_to_can_accel_watchpoint_condition (CORE_ADDR addr
, int len
, int rw
,
4559 struct expression
*cond
)
4563 retval
= debug_target
.to_can_accel_watchpoint_condition (addr
, len
,
4566 fprintf_unfiltered (gdb_stdlog
,
4567 "target_can_accel_watchpoint_condition "
4568 "(%s, %d, %d, %s) = %ld\n",
4569 core_addr_to_string (addr
), len
, rw
,
4570 host_address_to_string (cond
), (unsigned long) retval
);
4575 debug_to_stopped_by_watchpoint (void)
4579 retval
= debug_target
.to_stopped_by_watchpoint ();
4581 fprintf_unfiltered (gdb_stdlog
,
4582 "target_stopped_by_watchpoint () = %ld\n",
4583 (unsigned long) retval
);
4588 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4592 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4594 fprintf_unfiltered (gdb_stdlog
,
4595 "target_stopped_data_address ([%s]) = %ld\n",
4596 core_addr_to_string (*addr
),
4597 (unsigned long)retval
);
4602 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4604 CORE_ADDR start
, int length
)
4608 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4611 fprintf_filtered (gdb_stdlog
,
4612 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4613 core_addr_to_string (addr
), core_addr_to_string (start
),
4619 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
4620 struct bp_target_info
*bp_tgt
)
4624 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
4626 fprintf_unfiltered (gdb_stdlog
,
4627 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4628 core_addr_to_string (bp_tgt
->placed_address
),
4629 (unsigned long) retval
);
4634 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
4635 struct bp_target_info
*bp_tgt
)
4639 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
4641 fprintf_unfiltered (gdb_stdlog
,
4642 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4643 core_addr_to_string (bp_tgt
->placed_address
),
4644 (unsigned long) retval
);
4649 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
4650 struct expression
*cond
)
4654 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
, cond
);
4656 fprintf_unfiltered (gdb_stdlog
,
4657 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4658 core_addr_to_string (addr
), len
, type
,
4659 host_address_to_string (cond
), (unsigned long) retval
);
4664 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
4665 struct expression
*cond
)
4669 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
, cond
);
4671 fprintf_unfiltered (gdb_stdlog
,
4672 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4673 core_addr_to_string (addr
), len
, type
,
4674 host_address_to_string (cond
), (unsigned long) retval
);
4679 debug_to_terminal_init (void)
4681 debug_target
.to_terminal_init ();
4683 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4687 debug_to_terminal_inferior (void)
4689 debug_target
.to_terminal_inferior ();
4691 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4695 debug_to_terminal_ours_for_output (void)
4697 debug_target
.to_terminal_ours_for_output ();
4699 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4703 debug_to_terminal_ours (void)
4705 debug_target
.to_terminal_ours ();
4707 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4711 debug_to_terminal_save_ours (void)
4713 debug_target
.to_terminal_save_ours ();
4715 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4719 debug_to_terminal_info (const char *arg
, int from_tty
)
4721 debug_target
.to_terminal_info (arg
, from_tty
);
4723 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4728 debug_to_load (char *args
, int from_tty
)
4730 debug_target
.to_load (args
, from_tty
);
4732 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4736 debug_to_post_startup_inferior (ptid_t ptid
)
4738 debug_target
.to_post_startup_inferior (ptid
);
4740 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4745 debug_to_insert_fork_catchpoint (int pid
)
4749 retval
= debug_target
.to_insert_fork_catchpoint (pid
);
4751 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4758 debug_to_remove_fork_catchpoint (int pid
)
4762 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
4764 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4771 debug_to_insert_vfork_catchpoint (int pid
)
4775 retval
= debug_target
.to_insert_vfork_catchpoint (pid
);
4777 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4784 debug_to_remove_vfork_catchpoint (int pid
)
4788 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
4790 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4797 debug_to_insert_exec_catchpoint (int pid
)
4801 retval
= debug_target
.to_insert_exec_catchpoint (pid
);
4803 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4810 debug_to_remove_exec_catchpoint (int pid
)
4814 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
4816 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4823 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
4827 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
4829 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4830 pid
, wait_status
, *exit_status
, has_exited
);
4836 debug_to_can_run (void)
4840 retval
= debug_target
.to_can_run ();
4842 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4847 static struct gdbarch
*
4848 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4850 struct gdbarch
*retval
;
4852 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4854 fprintf_unfiltered (gdb_stdlog
,
4855 "target_thread_architecture (%s) = %s [%s]\n",
4856 target_pid_to_str (ptid
),
4857 host_address_to_string (retval
),
4858 gdbarch_bfd_arch_info (retval
)->printable_name
);
4863 debug_to_stop (ptid_t ptid
)
4865 debug_target
.to_stop (ptid
);
4867 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4868 target_pid_to_str (ptid
));
4872 debug_to_rcmd (char *command
,
4873 struct ui_file
*outbuf
)
4875 debug_target
.to_rcmd (command
, outbuf
);
4876 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4880 debug_to_pid_to_exec_file (int pid
)
4884 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
4886 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4893 setup_target_debug (void)
4895 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4897 current_target
.to_open
= debug_to_open
;
4898 current_target
.to_post_attach
= debug_to_post_attach
;
4899 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4900 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4901 current_target
.to_files_info
= debug_to_files_info
;
4902 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4903 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4904 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4905 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4906 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4907 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4908 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4909 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4910 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4911 current_target
.to_watchpoint_addr_within_range
4912 = debug_to_watchpoint_addr_within_range
;
4913 current_target
.to_region_ok_for_hw_watchpoint
4914 = debug_to_region_ok_for_hw_watchpoint
;
4915 current_target
.to_can_accel_watchpoint_condition
4916 = debug_to_can_accel_watchpoint_condition
;
4917 current_target
.to_terminal_init
= debug_to_terminal_init
;
4918 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4919 current_target
.to_terminal_ours_for_output
4920 = debug_to_terminal_ours_for_output
;
4921 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4922 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4923 current_target
.to_terminal_info
= debug_to_terminal_info
;
4924 current_target
.to_load
= debug_to_load
;
4925 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4926 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4927 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4928 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4929 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4930 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4931 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4932 current_target
.to_has_exited
= debug_to_has_exited
;
4933 current_target
.to_can_run
= debug_to_can_run
;
4934 current_target
.to_stop
= debug_to_stop
;
4935 current_target
.to_rcmd
= debug_to_rcmd
;
4936 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4937 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4941 static char targ_desc
[] =
4942 "Names of targets and files being debugged.\nShows the entire \
4943 stack of targets currently in use (including the exec-file,\n\
4944 core-file, and process, if any), as well as the symbol file name.";
4947 do_monitor_command (char *cmd
,
4950 if ((current_target
.to_rcmd
4951 == (void (*) (char *, struct ui_file
*)) tcomplain
)
4952 || (current_target
.to_rcmd
== debug_to_rcmd
4953 && (debug_target
.to_rcmd
4954 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
4955 error (_("\"monitor\" command not supported by this target."));
4956 target_rcmd (cmd
, gdb_stdtarg
);
4959 /* Print the name of each layers of our target stack. */
4962 maintenance_print_target_stack (char *cmd
, int from_tty
)
4964 struct target_ops
*t
;
4966 printf_filtered (_("The current target stack is:\n"));
4968 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4970 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4974 /* Controls if async mode is permitted. */
4975 int target_async_permitted
= 0;
4977 /* The set command writes to this variable. If the inferior is
4978 executing, linux_nat_async_permitted is *not* updated. */
4979 static int target_async_permitted_1
= 0;
4982 set_target_async_command (char *args
, int from_tty
,
4983 struct cmd_list_element
*c
)
4985 if (have_live_inferiors ())
4987 target_async_permitted_1
= target_async_permitted
;
4988 error (_("Cannot change this setting while the inferior is running."));
4991 target_async_permitted
= target_async_permitted_1
;
4995 show_target_async_command (struct ui_file
*file
, int from_tty
,
4996 struct cmd_list_element
*c
,
4999 fprintf_filtered (file
,
5000 _("Controlling the inferior in "
5001 "asynchronous mode is %s.\n"), value
);
5004 /* Temporary copies of permission settings. */
5006 static int may_write_registers_1
= 1;
5007 static int may_write_memory_1
= 1;
5008 static int may_insert_breakpoints_1
= 1;
5009 static int may_insert_tracepoints_1
= 1;
5010 static int may_insert_fast_tracepoints_1
= 1;
5011 static int may_stop_1
= 1;
5013 /* Make the user-set values match the real values again. */
5016 update_target_permissions (void)
5018 may_write_registers_1
= may_write_registers
;
5019 may_write_memory_1
= may_write_memory
;
5020 may_insert_breakpoints_1
= may_insert_breakpoints
;
5021 may_insert_tracepoints_1
= may_insert_tracepoints
;
5022 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
5023 may_stop_1
= may_stop
;
5026 /* The one function handles (most of) the permission flags in the same
5030 set_target_permissions (char *args
, int from_tty
,
5031 struct cmd_list_element
*c
)
5033 if (target_has_execution
)
5035 update_target_permissions ();
5036 error (_("Cannot change this setting while the inferior is running."));
5039 /* Make the real values match the user-changed values. */
5040 may_write_registers
= may_write_registers_1
;
5041 may_insert_breakpoints
= may_insert_breakpoints_1
;
5042 may_insert_tracepoints
= may_insert_tracepoints_1
;
5043 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
5044 may_stop
= may_stop_1
;
5045 update_observer_mode ();
5048 /* Set memory write permission independently of observer mode. */
5051 set_write_memory_permission (char *args
, int from_tty
,
5052 struct cmd_list_element
*c
)
5054 /* Make the real values match the user-changed values. */
5055 may_write_memory
= may_write_memory_1
;
5056 update_observer_mode ();
5061 initialize_targets (void)
5063 init_dummy_target ();
5064 push_target (&dummy_target
);
5066 add_info ("target", target_info
, targ_desc
);
5067 add_info ("files", target_info
, targ_desc
);
5069 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
5070 Set target debugging."), _("\
5071 Show target debugging."), _("\
5072 When non-zero, target debugging is enabled. Higher numbers are more\n\
5073 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
5077 &setdebuglist
, &showdebuglist
);
5079 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
5080 &trust_readonly
, _("\
5081 Set mode for reading from readonly sections."), _("\
5082 Show mode for reading from readonly sections."), _("\
5083 When this mode is on, memory reads from readonly sections (such as .text)\n\
5084 will be read from the object file instead of from the target. This will\n\
5085 result in significant performance improvement for remote targets."),
5087 show_trust_readonly
,
5088 &setlist
, &showlist
);
5090 add_com ("monitor", class_obscure
, do_monitor_command
,
5091 _("Send a command to the remote monitor (remote targets only)."));
5093 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5094 _("Print the name of each layer of the internal target stack."),
5095 &maintenanceprintlist
);
5097 add_setshow_boolean_cmd ("target-async", no_class
,
5098 &target_async_permitted_1
, _("\
5099 Set whether gdb controls the inferior in asynchronous mode."), _("\
5100 Show whether gdb controls the inferior in asynchronous mode."), _("\
5101 Tells gdb whether to control the inferior in asynchronous mode."),
5102 set_target_async_command
,
5103 show_target_async_command
,
5107 add_setshow_boolean_cmd ("stack-cache", class_support
,
5108 &stack_cache_enabled_p_1
, _("\
5109 Set cache use for stack access."), _("\
5110 Show cache use for stack access."), _("\
5111 When on, use the data cache for all stack access, regardless of any\n\
5112 configured memory regions. This improves remote performance significantly.\n\
5113 By default, caching for stack access is on."),
5114 set_stack_cache_enabled_p
,
5115 show_stack_cache_enabled_p
,
5116 &setlist
, &showlist
);
5118 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5119 &may_write_registers_1
, _("\
5120 Set permission to write into registers."), _("\
5121 Show permission to write into registers."), _("\
5122 When this permission is on, GDB may write into the target's registers.\n\
5123 Otherwise, any sort of write attempt will result in an error."),
5124 set_target_permissions
, NULL
,
5125 &setlist
, &showlist
);
5127 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5128 &may_write_memory_1
, _("\
5129 Set permission to write into target memory."), _("\
5130 Show permission to write into target memory."), _("\
5131 When this permission is on, GDB may write into the target's memory.\n\
5132 Otherwise, any sort of write attempt will result in an error."),
5133 set_write_memory_permission
, NULL
,
5134 &setlist
, &showlist
);
5136 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5137 &may_insert_breakpoints_1
, _("\
5138 Set permission to insert breakpoints in the target."), _("\
5139 Show permission to insert breakpoints in the target."), _("\
5140 When this permission is on, GDB may insert breakpoints in the program.\n\
5141 Otherwise, any sort of insertion attempt will result in an error."),
5142 set_target_permissions
, NULL
,
5143 &setlist
, &showlist
);
5145 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5146 &may_insert_tracepoints_1
, _("\
5147 Set permission to insert tracepoints in the target."), _("\
5148 Show permission to insert tracepoints in the target."), _("\
5149 When this permission is on, GDB may insert tracepoints in the program.\n\
5150 Otherwise, any sort of insertion attempt will result in an error."),
5151 set_target_permissions
, NULL
,
5152 &setlist
, &showlist
);
5154 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5155 &may_insert_fast_tracepoints_1
, _("\
5156 Set permission to insert fast tracepoints in the target."), _("\
5157 Show permission to insert fast tracepoints in the target."), _("\
5158 When this permission is on, GDB may insert fast tracepoints.\n\
5159 Otherwise, any sort of insertion attempt will result in an error."),
5160 set_target_permissions
, NULL
,
5161 &setlist
, &showlist
);
5163 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5165 Set permission to interrupt or signal the target."), _("\
5166 Show permission to interrupt or signal the target."), _("\
5167 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5168 Otherwise, any attempt to interrupt or stop will be ignored."),
5169 set_target_permissions
, NULL
,
5170 &setlist
, &showlist
);
5173 target_dcache
= dcache_init ();