1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2014 Free Software Foundation, Inc.
5 Contributed by Cygnus Support.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "target-dcache.h"
36 #include "gdb_assert.h"
38 #include "exceptions.h"
39 #include "target-descriptions.h"
40 #include "gdbthread.h"
43 #include "inline-frame.h"
44 #include "tracepoint.h"
45 #include "gdb/fileio.h"
48 static void target_info (char *, int);
50 static void default_terminal_info (struct target_ops
*, const char *, int);
52 static int default_watchpoint_addr_within_range (struct target_ops
*,
53 CORE_ADDR
, CORE_ADDR
, int);
55 static int default_region_ok_for_hw_watchpoint (struct target_ops
*,
58 static void default_rcmd (struct target_ops
*, char *, struct ui_file
*);
60 static ptid_t
default_get_ada_task_ptid (struct target_ops
*self
,
63 static void tcomplain (void) ATTRIBUTE_NORETURN
;
65 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
67 static int return_zero (void);
69 static int return_minus_one (void);
71 static void *return_null (void);
73 void target_ignore (void);
75 static void target_command (char *, int);
77 static struct target_ops
*find_default_run_target (char *);
79 static target_xfer_partial_ftype default_xfer_partial
;
81 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
84 static int dummy_find_memory_regions (struct target_ops
*self
,
85 find_memory_region_ftype ignore1
,
88 static char *dummy_make_corefile_notes (struct target_ops
*self
,
89 bfd
*ignore1
, int *ignore2
);
91 static int find_default_can_async_p (struct target_ops
*ignore
);
93 static int find_default_is_async_p (struct target_ops
*ignore
);
95 static enum exec_direction_kind default_execution_direction
96 (struct target_ops
*self
);
98 #include "target-delegates.c"
100 static void init_dummy_target (void);
102 static struct target_ops debug_target
;
104 static void debug_to_open (char *, int);
106 static void debug_to_prepare_to_store (struct target_ops
*self
,
109 static void debug_to_files_info (struct target_ops
*);
111 static int debug_to_insert_breakpoint (struct target_ops
*, struct gdbarch
*,
112 struct bp_target_info
*);
114 static int debug_to_remove_breakpoint (struct target_ops
*, struct gdbarch
*,
115 struct bp_target_info
*);
117 static int debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
120 static int debug_to_insert_hw_breakpoint (struct target_ops
*self
,
122 struct bp_target_info
*);
124 static int debug_to_remove_hw_breakpoint (struct target_ops
*self
,
126 struct bp_target_info
*);
128 static int debug_to_insert_watchpoint (struct target_ops
*self
,
130 struct expression
*);
132 static int debug_to_remove_watchpoint (struct target_ops
*self
,
134 struct expression
*);
136 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
138 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
139 CORE_ADDR
, CORE_ADDR
, int);
141 static int debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
144 static int debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
146 struct expression
*);
148 static void debug_to_terminal_init (struct target_ops
*self
);
150 static void debug_to_terminal_inferior (struct target_ops
*self
);
152 static void debug_to_terminal_ours_for_output (struct target_ops
*self
);
154 static void debug_to_terminal_save_ours (struct target_ops
*self
);
156 static void debug_to_terminal_ours (struct target_ops
*self
);
158 static void debug_to_load (struct target_ops
*self
, char *, int);
160 static int debug_to_can_run (struct target_ops
*self
);
162 static void debug_to_stop (struct target_ops
*self
, ptid_t
);
164 /* Pointer to array of target architecture structures; the size of the
165 array; the current index into the array; the allocated size of the
167 struct target_ops
**target_structs
;
168 unsigned target_struct_size
;
169 unsigned target_struct_allocsize
;
170 #define DEFAULT_ALLOCSIZE 10
172 /* The initial current target, so that there is always a semi-valid
175 static struct target_ops dummy_target
;
177 /* Top of target stack. */
179 static struct target_ops
*target_stack
;
181 /* The target structure we are currently using to talk to a process
182 or file or whatever "inferior" we have. */
184 struct target_ops current_target
;
186 /* Command list for target. */
188 static struct cmd_list_element
*targetlist
= NULL
;
190 /* Nonzero if we should trust readonly sections from the
191 executable when reading memory. */
193 static int trust_readonly
= 0;
195 /* Nonzero if we should show true memory content including
196 memory breakpoint inserted by gdb. */
198 static int show_memory_breakpoints
= 0;
200 /* These globals control whether GDB attempts to perform these
201 operations; they are useful for targets that need to prevent
202 inadvertant disruption, such as in non-stop mode. */
204 int may_write_registers
= 1;
206 int may_write_memory
= 1;
208 int may_insert_breakpoints
= 1;
210 int may_insert_tracepoints
= 1;
212 int may_insert_fast_tracepoints
= 1;
216 /* Non-zero if we want to see trace of target level stuff. */
218 static unsigned int targetdebug
= 0;
220 show_targetdebug (struct ui_file
*file
, int from_tty
,
221 struct cmd_list_element
*c
, const char *value
)
223 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
226 static void setup_target_debug (void);
228 /* The user just typed 'target' without the name of a target. */
231 target_command (char *arg
, int from_tty
)
233 fputs_filtered ("Argument required (target name). Try `help target'\n",
237 /* Default target_has_* methods for process_stratum targets. */
240 default_child_has_all_memory (struct target_ops
*ops
)
242 /* If no inferior selected, then we can't read memory here. */
243 if (ptid_equal (inferior_ptid
, null_ptid
))
250 default_child_has_memory (struct target_ops
*ops
)
252 /* If no inferior selected, then we can't read memory here. */
253 if (ptid_equal (inferior_ptid
, null_ptid
))
260 default_child_has_stack (struct target_ops
*ops
)
262 /* If no inferior selected, there's no stack. */
263 if (ptid_equal (inferior_ptid
, null_ptid
))
270 default_child_has_registers (struct target_ops
*ops
)
272 /* Can't read registers from no inferior. */
273 if (ptid_equal (inferior_ptid
, null_ptid
))
280 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
282 /* If there's no thread selected, then we can't make it run through
284 if (ptid_equal (the_ptid
, null_ptid
))
292 target_has_all_memory_1 (void)
294 struct target_ops
*t
;
296 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
297 if (t
->to_has_all_memory (t
))
304 target_has_memory_1 (void)
306 struct target_ops
*t
;
308 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
309 if (t
->to_has_memory (t
))
316 target_has_stack_1 (void)
318 struct target_ops
*t
;
320 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
321 if (t
->to_has_stack (t
))
328 target_has_registers_1 (void)
330 struct target_ops
*t
;
332 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
333 if (t
->to_has_registers (t
))
340 target_has_execution_1 (ptid_t the_ptid
)
342 struct target_ops
*t
;
344 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
345 if (t
->to_has_execution (t
, the_ptid
))
352 target_has_execution_current (void)
354 return target_has_execution_1 (inferior_ptid
);
357 /* Complete initialization of T. This ensures that various fields in
358 T are set, if needed by the target implementation. */
361 complete_target_initialization (struct target_ops
*t
)
363 /* Provide default values for all "must have" methods. */
364 if (t
->to_xfer_partial
== NULL
)
365 t
->to_xfer_partial
= default_xfer_partial
;
367 if (t
->to_has_all_memory
== NULL
)
368 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
370 if (t
->to_has_memory
== NULL
)
371 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
373 if (t
->to_has_stack
== NULL
)
374 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
376 if (t
->to_has_registers
== NULL
)
377 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
379 if (t
->to_has_execution
== NULL
)
380 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
382 install_delegators (t
);
385 /* Add possible target architecture T to the list and add a new
386 command 'target T->to_shortname'. Set COMPLETER as the command's
387 completer if not NULL. */
390 add_target_with_completer (struct target_ops
*t
,
391 completer_ftype
*completer
)
393 struct cmd_list_element
*c
;
395 complete_target_initialization (t
);
399 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
400 target_structs
= (struct target_ops
**) xmalloc
401 (target_struct_allocsize
* sizeof (*target_structs
));
403 if (target_struct_size
>= target_struct_allocsize
)
405 target_struct_allocsize
*= 2;
406 target_structs
= (struct target_ops
**)
407 xrealloc ((char *) target_structs
,
408 target_struct_allocsize
* sizeof (*target_structs
));
410 target_structs
[target_struct_size
++] = t
;
412 if (targetlist
== NULL
)
413 add_prefix_cmd ("target", class_run
, target_command
, _("\
414 Connect to a target machine or process.\n\
415 The first argument is the type or protocol of the target machine.\n\
416 Remaining arguments are interpreted by the target protocol. For more\n\
417 information on the arguments for a particular protocol, type\n\
418 `help target ' followed by the protocol name."),
419 &targetlist
, "target ", 0, &cmdlist
);
420 c
= add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
,
422 if (completer
!= NULL
)
423 set_cmd_completer (c
, completer
);
426 /* Add a possible target architecture to the list. */
429 add_target (struct target_ops
*t
)
431 add_target_with_completer (t
, NULL
);
437 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
439 struct cmd_list_element
*c
;
442 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
444 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
445 alt
= xstrprintf ("target %s", t
->to_shortname
);
446 deprecate_cmd (c
, alt
);
459 struct target_ops
*t
;
461 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
462 if (t
->to_kill
!= NULL
)
465 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
475 target_load (char *arg
, int from_tty
)
477 target_dcache_invalidate ();
478 (*current_target
.to_load
) (¤t_target
, arg
, from_tty
);
482 target_create_inferior (char *exec_file
, char *args
,
483 char **env
, int from_tty
)
485 struct target_ops
*t
;
487 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
489 if (t
->to_create_inferior
!= NULL
)
491 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
493 fprintf_unfiltered (gdb_stdlog
,
494 "target_create_inferior (%s, %s, xxx, %d)\n",
495 exec_file
, args
, from_tty
);
500 internal_error (__FILE__
, __LINE__
,
501 _("could not find a target to create inferior"));
505 target_terminal_inferior (void)
507 /* A background resume (``run&'') should leave GDB in control of the
508 terminal. Use target_can_async_p, not target_is_async_p, since at
509 this point the target is not async yet. However, if sync_execution
510 is not set, we know it will become async prior to resume. */
511 if (target_can_async_p () && !sync_execution
)
514 /* If GDB is resuming the inferior in the foreground, install
515 inferior's terminal modes. */
516 (*current_target
.to_terminal_inferior
) (¤t_target
);
520 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
521 struct target_ops
*t
)
523 errno
= EIO
; /* Can't read/write this location. */
524 return 0; /* No bytes handled. */
530 error (_("You can't do that when your target is `%s'"),
531 current_target
.to_shortname
);
537 error (_("You can't do that without a process to debug."));
541 default_terminal_info (struct target_ops
*self
, const char *args
, int from_tty
)
543 printf_unfiltered (_("No saved terminal information.\n"));
546 /* A default implementation for the to_get_ada_task_ptid target method.
548 This function builds the PTID by using both LWP and TID as part of
549 the PTID lwp and tid elements. The pid used is the pid of the
553 default_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long tid
)
555 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
558 static enum exec_direction_kind
559 default_execution_direction (struct target_ops
*self
)
561 if (!target_can_execute_reverse
)
563 else if (!target_can_async_p ())
566 gdb_assert_not_reached ("\
567 to_execution_direction must be implemented for reverse async");
570 /* Go through the target stack from top to bottom, copying over zero
571 entries in current_target, then filling in still empty entries. In
572 effect, we are doing class inheritance through the pushed target
575 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
576 is currently implemented, is that it discards any knowledge of
577 which target an inherited method originally belonged to.
578 Consequently, new new target methods should instead explicitly and
579 locally search the target stack for the target that can handle the
583 update_current_target (void)
585 struct target_ops
*t
;
587 /* First, reset current's contents. */
588 memset (¤t_target
, 0, sizeof (current_target
));
590 /* Install the delegators. */
591 install_delegators (¤t_target
);
593 #define INHERIT(FIELD, TARGET) \
594 if (!current_target.FIELD) \
595 current_target.FIELD = (TARGET)->FIELD
597 for (t
= target_stack
; t
; t
= t
->beneath
)
599 INHERIT (to_shortname
, t
);
600 INHERIT (to_longname
, t
);
602 /* Do not inherit to_open. */
603 /* Do not inherit to_close. */
604 /* Do not inherit to_attach. */
605 /* Do not inherit to_post_attach. */
606 INHERIT (to_attach_no_wait
, t
);
607 /* Do not inherit to_detach. */
608 /* Do not inherit to_disconnect. */
609 /* Do not inherit to_resume. */
610 /* Do not inherit to_wait. */
611 /* Do not inherit to_fetch_registers. */
612 /* Do not inherit to_store_registers. */
613 /* Do not inherit to_prepare_to_store. */
614 INHERIT (deprecated_xfer_memory
, t
);
615 /* Do not inherit to_files_info. */
616 /* Do not inherit to_insert_breakpoint. */
617 /* Do not inherit to_remove_breakpoint. */
618 /* Do not inherit to_can_use_hw_breakpoint. */
619 /* Do not inherit to_insert_hw_breakpoint. */
620 /* Do not inherit to_remove_hw_breakpoint. */
621 /* Do not inherit to_ranged_break_num_registers. */
622 /* Do not inherit to_insert_watchpoint. */
623 /* Do not inherit to_remove_watchpoint. */
624 /* Do not inherit to_insert_mask_watchpoint. */
625 /* Do not inherit to_remove_mask_watchpoint. */
626 /* Do not inherit to_stopped_data_address. */
627 INHERIT (to_have_steppable_watchpoint
, t
);
628 INHERIT (to_have_continuable_watchpoint
, t
);
629 /* Do not inherit to_stopped_by_watchpoint. */
630 /* Do not inherit to_watchpoint_addr_within_range. */
631 /* Do not inherit to_region_ok_for_hw_watchpoint. */
632 /* Do not inherit to_can_accel_watchpoint_condition. */
633 /* Do not inherit to_masked_watch_num_registers. */
634 /* Do not inherit to_terminal_init. */
635 /* Do not inherit to_terminal_inferior. */
636 /* Do not inherit to_terminal_ours_for_output. */
637 /* Do not inherit to_terminal_ours. */
638 /* Do not inherit to_terminal_save_ours. */
639 /* Do not inherit to_terminal_info. */
640 /* Do not inherit to_kill. */
641 /* Do not inherit to_load. */
642 /* Do no inherit to_create_inferior. */
643 /* Do not inherit to_post_startup_inferior. */
644 /* Do not inherit to_insert_fork_catchpoint. */
645 /* Do not inherit to_remove_fork_catchpoint. */
646 /* Do not inherit to_insert_vfork_catchpoint. */
647 /* Do not inherit to_remove_vfork_catchpoint. */
648 /* Do not inherit to_follow_fork. */
649 /* Do not inherit to_insert_exec_catchpoint. */
650 /* Do not inherit to_remove_exec_catchpoint. */
651 /* Do not inherit to_set_syscall_catchpoint. */
652 /* Do not inherit to_has_exited. */
653 /* Do not inherit to_mourn_inferior. */
654 INHERIT (to_can_run
, t
);
655 /* Do not inherit to_pass_signals. */
656 /* Do not inherit to_program_signals. */
657 /* Do not inherit to_thread_alive. */
658 /* Do not inherit to_find_new_threads. */
659 /* Do not inherit to_pid_to_str. */
660 /* Do not inherit to_extra_thread_info. */
661 /* Do not inherit to_thread_name. */
662 INHERIT (to_stop
, t
);
663 /* Do not inherit to_xfer_partial. */
664 /* Do not inherit to_rcmd. */
665 /* Do not inherit to_pid_to_exec_file. */
666 /* Do not inherit to_log_command. */
667 INHERIT (to_stratum
, t
);
668 /* Do not inherit to_has_all_memory. */
669 /* Do not inherit to_has_memory. */
670 /* Do not inherit to_has_stack. */
671 /* Do not inherit to_has_registers. */
672 /* Do not inherit to_has_execution. */
673 INHERIT (to_has_thread_control
, t
);
674 /* Do not inherit to_can_async_p. */
675 /* Do not inherit to_is_async_p. */
676 /* Do not inherit to_async. */
677 /* Do not inherit to_find_memory_regions. */
678 /* Do not inherit to_make_corefile_notes. */
679 /* Do not inherit to_get_bookmark. */
680 /* Do not inherit to_goto_bookmark. */
681 /* Do not inherit to_get_thread_local_address. */
682 /* Do not inherit to_can_execute_reverse. */
683 /* Do not inherit to_execution_direction. */
684 /* Do not inherit to_thread_architecture. */
685 /* Do not inherit to_read_description. */
686 /* Do not inherit to_get_ada_task_ptid. */
687 /* Do not inherit to_search_memory. */
688 /* Do not inherit to_supports_multi_process. */
689 /* Do not inherit to_supports_enable_disable_tracepoint. */
690 /* Do not inherit to_supports_string_tracing. */
691 /* Do not inherit to_trace_init. */
692 /* Do not inherit to_download_tracepoint. */
693 /* Do not inherit to_can_download_tracepoint. */
694 /* Do not inherit to_download_trace_state_variable. */
695 /* Do not inherit to_enable_tracepoint. */
696 /* Do not inherit to_disable_tracepoint. */
697 /* Do not inherit to_trace_set_readonly_regions. */
698 INHERIT (to_trace_start
, t
);
699 INHERIT (to_get_trace_status
, t
);
700 INHERIT (to_get_tracepoint_status
, t
);
701 INHERIT (to_trace_stop
, t
);
702 INHERIT (to_trace_find
, t
);
703 INHERIT (to_get_trace_state_variable_value
, t
);
704 INHERIT (to_save_trace_data
, t
);
705 INHERIT (to_upload_tracepoints
, t
);
706 INHERIT (to_upload_trace_state_variables
, t
);
707 INHERIT (to_get_raw_trace_data
, t
);
708 INHERIT (to_get_min_fast_tracepoint_insn_len
, t
);
709 INHERIT (to_set_disconnected_tracing
, t
);
710 INHERIT (to_set_circular_trace_buffer
, t
);
711 INHERIT (to_set_trace_buffer_size
, t
);
712 INHERIT (to_set_trace_notes
, t
);
713 INHERIT (to_get_tib_address
, t
);
714 INHERIT (to_set_permissions
, t
);
715 INHERIT (to_static_tracepoint_marker_at
, t
);
716 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
717 INHERIT (to_traceframe_info
, t
);
718 INHERIT (to_use_agent
, t
);
719 INHERIT (to_can_use_agent
, t
);
720 INHERIT (to_augmented_libraries_svr4_read
, t
);
721 INHERIT (to_magic
, t
);
722 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
723 INHERIT (to_can_run_breakpoint_commands
, t
);
724 /* Do not inherit to_memory_map. */
725 /* Do not inherit to_flash_erase. */
726 /* Do not inherit to_flash_done. */
730 /* Clean up a target struct so it no longer has any zero pointers in
731 it. Some entries are defaulted to a method that print an error,
732 others are hard-wired to a standard recursive default. */
734 #define de_fault(field, value) \
735 if (!current_target.field) \
736 current_target.field = value
739 (void (*) (char *, int))
742 (void (*) (struct target_ops
*))
744 de_fault (deprecated_xfer_memory
,
745 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
746 struct mem_attrib
*, struct target_ops
*))
748 de_fault (to_can_run
,
749 (int (*) (struct target_ops
*))
752 (void (*) (struct target_ops
*, ptid_t
))
754 current_target
.to_read_description
= NULL
;
755 de_fault (to_trace_start
,
756 (void (*) (struct target_ops
*))
758 de_fault (to_get_trace_status
,
759 (int (*) (struct target_ops
*, struct trace_status
*))
761 de_fault (to_get_tracepoint_status
,
762 (void (*) (struct target_ops
*, struct breakpoint
*,
763 struct uploaded_tp
*))
765 de_fault (to_trace_stop
,
766 (void (*) (struct target_ops
*))
768 de_fault (to_trace_find
,
769 (int (*) (struct target_ops
*,
770 enum trace_find_type
, int, CORE_ADDR
, CORE_ADDR
, int *))
772 de_fault (to_get_trace_state_variable_value
,
773 (int (*) (struct target_ops
*, int, LONGEST
*))
775 de_fault (to_save_trace_data
,
776 (int (*) (struct target_ops
*, const char *))
778 de_fault (to_upload_tracepoints
,
779 (int (*) (struct target_ops
*, struct uploaded_tp
**))
781 de_fault (to_upload_trace_state_variables
,
782 (int (*) (struct target_ops
*, struct uploaded_tsv
**))
784 de_fault (to_get_raw_trace_data
,
785 (LONGEST (*) (struct target_ops
*, gdb_byte
*, ULONGEST
, LONGEST
))
787 de_fault (to_get_min_fast_tracepoint_insn_len
,
788 (int (*) (struct target_ops
*))
790 de_fault (to_set_disconnected_tracing
,
791 (void (*) (struct target_ops
*, int))
793 de_fault (to_set_circular_trace_buffer
,
794 (void (*) (struct target_ops
*, int))
796 de_fault (to_set_trace_buffer_size
,
797 (void (*) (struct target_ops
*, LONGEST
))
799 de_fault (to_set_trace_notes
,
800 (int (*) (struct target_ops
*,
801 const char *, const char *, const char *))
803 de_fault (to_get_tib_address
,
804 (int (*) (struct target_ops
*, ptid_t
, CORE_ADDR
*))
806 de_fault (to_set_permissions
,
807 (void (*) (struct target_ops
*))
809 de_fault (to_static_tracepoint_marker_at
,
810 (int (*) (struct target_ops
*,
811 CORE_ADDR
, struct static_tracepoint_marker
*))
813 de_fault (to_static_tracepoint_markers_by_strid
,
814 (VEC(static_tracepoint_marker_p
) * (*) (struct target_ops
*,
817 de_fault (to_traceframe_info
,
818 (struct traceframe_info
* (*) (struct target_ops
*))
820 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
821 (int (*) (struct target_ops
*))
823 de_fault (to_can_run_breakpoint_commands
,
824 (int (*) (struct target_ops
*))
826 de_fault (to_use_agent
,
827 (int (*) (struct target_ops
*, int))
829 de_fault (to_can_use_agent
,
830 (int (*) (struct target_ops
*))
832 de_fault (to_augmented_libraries_svr4_read
,
833 (int (*) (struct target_ops
*))
838 /* Finally, position the target-stack beneath the squashed
839 "current_target". That way code looking for a non-inherited
840 target method can quickly and simply find it. */
841 current_target
.beneath
= target_stack
;
844 setup_target_debug ();
847 /* Push a new target type into the stack of the existing target accessors,
848 possibly superseding some of the existing accessors.
850 Rather than allow an empty stack, we always have the dummy target at
851 the bottom stratum, so we can call the function vectors without
855 push_target (struct target_ops
*t
)
857 struct target_ops
**cur
;
859 /* Check magic number. If wrong, it probably means someone changed
860 the struct definition, but not all the places that initialize one. */
861 if (t
->to_magic
!= OPS_MAGIC
)
863 fprintf_unfiltered (gdb_stderr
,
864 "Magic number of %s target struct wrong\n",
866 internal_error (__FILE__
, __LINE__
,
867 _("failed internal consistency check"));
870 /* Find the proper stratum to install this target in. */
871 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
873 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
877 /* If there's already targets at this stratum, remove them. */
878 /* FIXME: cagney/2003-10-15: I think this should be popping all
879 targets to CUR, and not just those at this stratum level. */
880 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
882 /* There's already something at this stratum level. Close it,
883 and un-hook it from the stack. */
884 struct target_ops
*tmp
= (*cur
);
886 (*cur
) = (*cur
)->beneath
;
891 /* We have removed all targets in our stratum, now add the new one. */
895 update_current_target ();
898 /* Remove a target_ops vector from the stack, wherever it may be.
899 Return how many times it was removed (0 or 1). */
902 unpush_target (struct target_ops
*t
)
904 struct target_ops
**cur
;
905 struct target_ops
*tmp
;
907 if (t
->to_stratum
== dummy_stratum
)
908 internal_error (__FILE__
, __LINE__
,
909 _("Attempt to unpush the dummy target"));
911 /* Look for the specified target. Note that we assume that a target
912 can only occur once in the target stack. */
914 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
920 /* If we don't find target_ops, quit. Only open targets should be
925 /* Unchain the target. */
927 (*cur
) = (*cur
)->beneath
;
930 update_current_target ();
932 /* Finally close the target. Note we do this after unchaining, so
933 any target method calls from within the target_close
934 implementation don't end up in T anymore. */
941 pop_all_targets_above (enum strata above_stratum
)
943 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
945 if (!unpush_target (target_stack
))
947 fprintf_unfiltered (gdb_stderr
,
948 "pop_all_targets couldn't find target %s\n",
949 target_stack
->to_shortname
);
950 internal_error (__FILE__
, __LINE__
,
951 _("failed internal consistency check"));
958 pop_all_targets (void)
960 pop_all_targets_above (dummy_stratum
);
963 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
966 target_is_pushed (struct target_ops
*t
)
968 struct target_ops
**cur
;
970 /* Check magic number. If wrong, it probably means someone changed
971 the struct definition, but not all the places that initialize one. */
972 if (t
->to_magic
!= OPS_MAGIC
)
974 fprintf_unfiltered (gdb_stderr
,
975 "Magic number of %s target struct wrong\n",
977 internal_error (__FILE__
, __LINE__
,
978 _("failed internal consistency check"));
981 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
988 /* Using the objfile specified in OBJFILE, find the address for the
989 current thread's thread-local storage with offset OFFSET. */
991 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
993 volatile CORE_ADDR addr
= 0;
994 struct target_ops
*target
;
996 for (target
= current_target
.beneath
;
998 target
= target
->beneath
)
1000 if (target
->to_get_thread_local_address
!= NULL
)
1005 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
1007 ptid_t ptid
= inferior_ptid
;
1008 volatile struct gdb_exception ex
;
1010 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1014 /* Fetch the load module address for this objfile. */
1015 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1017 /* If it's 0, throw the appropriate exception. */
1019 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1020 _("TLS load module not found"));
1022 addr
= target
->to_get_thread_local_address (target
, ptid
,
1025 /* If an error occurred, print TLS related messages here. Otherwise,
1026 throw the error to some higher catcher. */
1029 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1033 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1034 error (_("Cannot find thread-local variables "
1035 "in this thread library."));
1037 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1038 if (objfile_is_library
)
1039 error (_("Cannot find shared library `%s' in dynamic"
1040 " linker's load module list"), objfile_name (objfile
));
1042 error (_("Cannot find executable file `%s' in dynamic"
1043 " linker's load module list"), objfile_name (objfile
));
1045 case TLS_NOT_ALLOCATED_YET_ERROR
:
1046 if (objfile_is_library
)
1047 error (_("The inferior has not yet allocated storage for"
1048 " thread-local variables in\n"
1049 "the shared library `%s'\n"
1051 objfile_name (objfile
), target_pid_to_str (ptid
));
1053 error (_("The inferior has not yet allocated storage for"
1054 " thread-local variables in\n"
1055 "the executable `%s'\n"
1057 objfile_name (objfile
), target_pid_to_str (ptid
));
1059 case TLS_GENERIC_ERROR
:
1060 if (objfile_is_library
)
1061 error (_("Cannot find thread-local storage for %s, "
1062 "shared library %s:\n%s"),
1063 target_pid_to_str (ptid
),
1064 objfile_name (objfile
), ex
.message
);
1066 error (_("Cannot find thread-local storage for %s, "
1067 "executable file %s:\n%s"),
1068 target_pid_to_str (ptid
),
1069 objfile_name (objfile
), ex
.message
);
1072 throw_exception (ex
);
1077 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1078 TLS is an ABI-specific thing. But we don't do that yet. */
1080 error (_("Cannot find thread-local variables on this target"));
1086 target_xfer_status_to_string (enum target_xfer_status err
)
1088 #define CASE(X) case X: return #X
1091 CASE(TARGET_XFER_E_IO
);
1092 CASE(TARGET_XFER_E_UNAVAILABLE
);
1101 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1103 /* target_read_string -- read a null terminated string, up to LEN bytes,
1104 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1105 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1106 is responsible for freeing it. Return the number of bytes successfully
1110 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1112 int tlen
, offset
, i
;
1116 int buffer_allocated
;
1118 unsigned int nbytes_read
= 0;
1120 gdb_assert (string
);
1122 /* Small for testing. */
1123 buffer_allocated
= 4;
1124 buffer
= xmalloc (buffer_allocated
);
1129 tlen
= MIN (len
, 4 - (memaddr
& 3));
1130 offset
= memaddr
& 3;
1132 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1135 /* The transfer request might have crossed the boundary to an
1136 unallocated region of memory. Retry the transfer, requesting
1140 errcode
= target_read_memory (memaddr
, buf
, 1);
1145 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1149 bytes
= bufptr
- buffer
;
1150 buffer_allocated
*= 2;
1151 buffer
= xrealloc (buffer
, buffer_allocated
);
1152 bufptr
= buffer
+ bytes
;
1155 for (i
= 0; i
< tlen
; i
++)
1157 *bufptr
++ = buf
[i
+ offset
];
1158 if (buf
[i
+ offset
] == '\000')
1160 nbytes_read
+= i
+ 1;
1167 nbytes_read
+= tlen
;
1176 struct target_section_table
*
1177 target_get_section_table (struct target_ops
*target
)
1179 struct target_ops
*t
;
1182 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1184 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1185 if (t
->to_get_section_table
!= NULL
)
1186 return (*t
->to_get_section_table
) (t
);
1191 /* Find a section containing ADDR. */
1193 struct target_section
*
1194 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1196 struct target_section_table
*table
= target_get_section_table (target
);
1197 struct target_section
*secp
;
1202 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1204 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1210 /* Read memory from the live target, even if currently inspecting a
1211 traceframe. The return is the same as that of target_read. */
1213 static enum target_xfer_status
1214 target_read_live_memory (enum target_object object
,
1215 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1216 ULONGEST
*xfered_len
)
1218 enum target_xfer_status ret
;
1219 struct cleanup
*cleanup
;
1221 /* Switch momentarily out of tfind mode so to access live memory.
1222 Note that this must not clear global state, such as the frame
1223 cache, which must still remain valid for the previous traceframe.
1224 We may be _building_ the frame cache at this point. */
1225 cleanup
= make_cleanup_restore_traceframe_number ();
1226 set_traceframe_number (-1);
1228 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1229 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1231 do_cleanups (cleanup
);
1235 /* Using the set of read-only target sections of OPS, read live
1236 read-only memory. Note that the actual reads start from the
1237 top-most target again.
1239 For interface/parameters/return description see target.h,
1242 static enum target_xfer_status
1243 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1244 enum target_object object
,
1245 gdb_byte
*readbuf
, ULONGEST memaddr
,
1246 ULONGEST len
, ULONGEST
*xfered_len
)
1248 struct target_section
*secp
;
1249 struct target_section_table
*table
;
1251 secp
= target_section_by_addr (ops
, memaddr
);
1253 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1254 secp
->the_bfd_section
)
1257 struct target_section
*p
;
1258 ULONGEST memend
= memaddr
+ len
;
1260 table
= target_get_section_table (ops
);
1262 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1264 if (memaddr
>= p
->addr
)
1266 if (memend
<= p
->endaddr
)
1268 /* Entire transfer is within this section. */
1269 return target_read_live_memory (object
, memaddr
,
1270 readbuf
, len
, xfered_len
);
1272 else if (memaddr
>= p
->endaddr
)
1274 /* This section ends before the transfer starts. */
1279 /* This section overlaps the transfer. Just do half. */
1280 len
= p
->endaddr
- memaddr
;
1281 return target_read_live_memory (object
, memaddr
,
1282 readbuf
, len
, xfered_len
);
1288 return TARGET_XFER_EOF
;
1291 /* Read memory from more than one valid target. A core file, for
1292 instance, could have some of memory but delegate other bits to
1293 the target below it. So, we must manually try all targets. */
1295 static enum target_xfer_status
1296 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1297 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1298 ULONGEST
*xfered_len
)
1300 enum target_xfer_status res
;
1304 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1305 readbuf
, writebuf
, memaddr
, len
,
1307 if (res
== TARGET_XFER_OK
)
1310 /* Stop if the target reports that the memory is not available. */
1311 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1314 /* We want to continue past core files to executables, but not
1315 past a running target's memory. */
1316 if (ops
->to_has_all_memory (ops
))
1321 while (ops
!= NULL
);
1326 /* Perform a partial memory transfer.
1327 For docs see target.h, to_xfer_partial. */
1329 static enum target_xfer_status
1330 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1331 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1332 ULONGEST len
, ULONGEST
*xfered_len
)
1334 enum target_xfer_status res
;
1336 struct mem_region
*region
;
1337 struct inferior
*inf
;
1339 /* For accesses to unmapped overlay sections, read directly from
1340 files. Must do this first, as MEMADDR may need adjustment. */
1341 if (readbuf
!= NULL
&& overlay_debugging
)
1343 struct obj_section
*section
= find_pc_overlay (memaddr
);
1345 if (pc_in_unmapped_range (memaddr
, section
))
1347 struct target_section_table
*table
1348 = target_get_section_table (ops
);
1349 const char *section_name
= section
->the_bfd_section
->name
;
1351 memaddr
= overlay_mapped_address (memaddr
, section
);
1352 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1353 memaddr
, len
, xfered_len
,
1355 table
->sections_end
,
1360 /* Try the executable files, if "trust-readonly-sections" is set. */
1361 if (readbuf
!= NULL
&& trust_readonly
)
1363 struct target_section
*secp
;
1364 struct target_section_table
*table
;
1366 secp
= target_section_by_addr (ops
, memaddr
);
1368 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1369 secp
->the_bfd_section
)
1372 table
= target_get_section_table (ops
);
1373 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1374 memaddr
, len
, xfered_len
,
1376 table
->sections_end
,
1381 /* If reading unavailable memory in the context of traceframes, and
1382 this address falls within a read-only section, fallback to
1383 reading from live memory. */
1384 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1386 VEC(mem_range_s
) *available
;
1388 /* If we fail to get the set of available memory, then the
1389 target does not support querying traceframe info, and so we
1390 attempt reading from the traceframe anyway (assuming the
1391 target implements the old QTro packet then). */
1392 if (traceframe_available_memory (&available
, memaddr
, len
))
1394 struct cleanup
*old_chain
;
1396 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1398 if (VEC_empty (mem_range_s
, available
)
1399 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1401 /* Don't read into the traceframe's available
1403 if (!VEC_empty (mem_range_s
, available
))
1405 LONGEST oldlen
= len
;
1407 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1408 gdb_assert (len
<= oldlen
);
1411 do_cleanups (old_chain
);
1413 /* This goes through the topmost target again. */
1414 res
= memory_xfer_live_readonly_partial (ops
, object
,
1417 if (res
== TARGET_XFER_OK
)
1418 return TARGET_XFER_OK
;
1421 /* No use trying further, we know some memory starting
1422 at MEMADDR isn't available. */
1424 return TARGET_XFER_E_UNAVAILABLE
;
1428 /* Don't try to read more than how much is available, in
1429 case the target implements the deprecated QTro packet to
1430 cater for older GDBs (the target's knowledge of read-only
1431 sections may be outdated by now). */
1432 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1434 do_cleanups (old_chain
);
1438 /* Try GDB's internal data cache. */
1439 region
= lookup_mem_region (memaddr
);
1440 /* region->hi == 0 means there's no upper bound. */
1441 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1444 reg_len
= region
->hi
- memaddr
;
1446 switch (region
->attrib
.mode
)
1449 if (writebuf
!= NULL
)
1450 return TARGET_XFER_E_IO
;
1454 if (readbuf
!= NULL
)
1455 return TARGET_XFER_E_IO
;
1459 /* We only support writing to flash during "load" for now. */
1460 if (writebuf
!= NULL
)
1461 error (_("Writing to flash memory forbidden in this context"));
1465 return TARGET_XFER_E_IO
;
1468 if (!ptid_equal (inferior_ptid
, null_ptid
))
1469 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1474 /* The dcache reads whole cache lines; that doesn't play well
1475 with reading from a trace buffer, because reading outside of
1476 the collected memory range fails. */
1477 && get_traceframe_number () == -1
1478 && (region
->attrib
.cache
1479 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1480 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1482 DCACHE
*dcache
= target_dcache_get_or_init ();
1485 if (readbuf
!= NULL
)
1486 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1488 /* FIXME drow/2006-08-09: If we're going to preserve const
1489 correctness dcache_xfer_memory should take readbuf and
1491 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1494 return TARGET_XFER_E_IO
;
1497 *xfered_len
= (ULONGEST
) l
;
1498 return TARGET_XFER_OK
;
1502 /* If none of those methods found the memory we wanted, fall back
1503 to a target partial transfer. Normally a single call to
1504 to_xfer_partial is enough; if it doesn't recognize an object
1505 it will call the to_xfer_partial of the next target down.
1506 But for memory this won't do. Memory is the only target
1507 object which can be read from more than one valid target.
1508 A core file, for instance, could have some of memory but
1509 delegate other bits to the target below it. So, we must
1510 manually try all targets. */
1512 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1515 /* Make sure the cache gets updated no matter what - if we are writing
1516 to the stack. Even if this write is not tagged as such, we still need
1517 to update the cache. */
1519 if (res
== TARGET_XFER_OK
1522 && target_dcache_init_p ()
1523 && !region
->attrib
.cache
1524 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1525 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1527 DCACHE
*dcache
= target_dcache_get ();
1529 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1532 /* If we still haven't got anything, return the last error. We
1537 /* Perform a partial memory transfer. For docs see target.h,
1540 static enum target_xfer_status
1541 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1542 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1543 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1545 enum target_xfer_status res
;
1547 /* Zero length requests are ok and require no work. */
1549 return TARGET_XFER_EOF
;
1551 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1552 breakpoint insns, thus hiding out from higher layers whether
1553 there are software breakpoints inserted in the code stream. */
1554 if (readbuf
!= NULL
)
1556 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1559 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1560 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1565 struct cleanup
*old_chain
;
1567 /* A large write request is likely to be partially satisfied
1568 by memory_xfer_partial_1. We will continually malloc
1569 and free a copy of the entire write request for breakpoint
1570 shadow handling even though we only end up writing a small
1571 subset of it. Cap writes to 4KB to mitigate this. */
1572 len
= min (4096, len
);
1574 buf
= xmalloc (len
);
1575 old_chain
= make_cleanup (xfree
, buf
);
1576 memcpy (buf
, writebuf
, len
);
1578 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1579 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1582 do_cleanups (old_chain
);
1589 restore_show_memory_breakpoints (void *arg
)
1591 show_memory_breakpoints
= (uintptr_t) arg
;
1595 make_show_memory_breakpoints_cleanup (int show
)
1597 int current
= show_memory_breakpoints
;
1599 show_memory_breakpoints
= show
;
1600 return make_cleanup (restore_show_memory_breakpoints
,
1601 (void *) (uintptr_t) current
);
1604 /* For docs see target.h, to_xfer_partial. */
1606 enum target_xfer_status
1607 target_xfer_partial (struct target_ops
*ops
,
1608 enum target_object object
, const char *annex
,
1609 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1610 ULONGEST offset
, ULONGEST len
,
1611 ULONGEST
*xfered_len
)
1613 enum target_xfer_status retval
;
1615 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1617 /* Transfer is done when LEN is zero. */
1619 return TARGET_XFER_EOF
;
1621 if (writebuf
&& !may_write_memory
)
1622 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1623 core_addr_to_string_nz (offset
), plongest (len
));
1627 /* If this is a memory transfer, let the memory-specific code
1628 have a look at it instead. Memory transfers are more
1630 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1631 || object
== TARGET_OBJECT_CODE_MEMORY
)
1632 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1633 writebuf
, offset
, len
, xfered_len
);
1634 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1636 /* Request the normal memory object from other layers. */
1637 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1641 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1642 writebuf
, offset
, len
, xfered_len
);
1646 const unsigned char *myaddr
= NULL
;
1648 fprintf_unfiltered (gdb_stdlog
,
1649 "%s:target_xfer_partial "
1650 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1653 (annex
? annex
: "(null)"),
1654 host_address_to_string (readbuf
),
1655 host_address_to_string (writebuf
),
1656 core_addr_to_string_nz (offset
),
1657 pulongest (len
), retval
,
1658 pulongest (*xfered_len
));
1664 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1668 fputs_unfiltered (", bytes =", gdb_stdlog
);
1669 for (i
= 0; i
< *xfered_len
; i
++)
1671 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1673 if (targetdebug
< 2 && i
> 0)
1675 fprintf_unfiltered (gdb_stdlog
, " ...");
1678 fprintf_unfiltered (gdb_stdlog
, "\n");
1681 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1685 fputc_unfiltered ('\n', gdb_stdlog
);
1688 /* Check implementations of to_xfer_partial update *XFERED_LEN
1689 properly. Do assertion after printing debug messages, so that we
1690 can find more clues on assertion failure from debugging messages. */
1691 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1692 gdb_assert (*xfered_len
> 0);
1697 /* Read LEN bytes of target memory at address MEMADDR, placing the
1698 results in GDB's memory at MYADDR. Returns either 0 for success or
1699 TARGET_XFER_E_IO if any error occurs.
1701 If an error occurs, no guarantee is made about the contents of the data at
1702 MYADDR. In particular, the caller should not depend upon partial reads
1703 filling the buffer with good data. There is no way for the caller to know
1704 how much good data might have been transfered anyway. Callers that can
1705 deal with partial reads should call target_read (which will retry until
1706 it makes no progress, and then return how much was transferred). */
1709 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1711 /* Dispatch to the topmost target, not the flattened current_target.
1712 Memory accesses check target->to_has_(all_)memory, and the
1713 flattened target doesn't inherit those. */
1714 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1715 myaddr
, memaddr
, len
) == len
)
1718 return TARGET_XFER_E_IO
;
1721 /* Like target_read_memory, but specify explicitly that this is a read
1722 from the target's raw memory. That is, this read bypasses the
1723 dcache, breakpoint shadowing, etc. */
1726 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1728 /* See comment in target_read_memory about why the request starts at
1729 current_target.beneath. */
1730 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1731 myaddr
, memaddr
, len
) == len
)
1734 return TARGET_XFER_E_IO
;
1737 /* Like target_read_memory, but specify explicitly that this is a read from
1738 the target's stack. This may trigger different cache behavior. */
1741 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1743 /* See comment in target_read_memory about why the request starts at
1744 current_target.beneath. */
1745 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1746 myaddr
, memaddr
, len
) == len
)
1749 return TARGET_XFER_E_IO
;
1752 /* Like target_read_memory, but specify explicitly that this is a read from
1753 the target's code. This may trigger different cache behavior. */
1756 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1758 /* See comment in target_read_memory about why the request starts at
1759 current_target.beneath. */
1760 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1761 myaddr
, memaddr
, len
) == len
)
1764 return TARGET_XFER_E_IO
;
1767 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1768 Returns either 0 for success or TARGET_XFER_E_IO if any
1769 error occurs. If an error occurs, no guarantee is made about how
1770 much data got written. Callers that can deal with partial writes
1771 should call target_write. */
1774 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1776 /* See comment in target_read_memory about why the request starts at
1777 current_target.beneath. */
1778 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1779 myaddr
, memaddr
, len
) == len
)
1782 return TARGET_XFER_E_IO
;
1785 /* Write LEN bytes from MYADDR to target raw memory at address
1786 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1787 if any error occurs. If an error occurs, no guarantee is made
1788 about how much data got written. Callers that can deal with
1789 partial writes should call target_write. */
1792 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1794 /* See comment in target_read_memory about why the request starts at
1795 current_target.beneath. */
1796 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1797 myaddr
, memaddr
, len
) == len
)
1800 return TARGET_XFER_E_IO
;
1803 /* Fetch the target's memory map. */
1806 target_memory_map (void)
1808 VEC(mem_region_s
) *result
;
1809 struct mem_region
*last_one
, *this_one
;
1811 struct target_ops
*t
;
1814 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1816 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1817 if (t
->to_memory_map
!= NULL
)
1823 result
= t
->to_memory_map (t
);
1827 qsort (VEC_address (mem_region_s
, result
),
1828 VEC_length (mem_region_s
, result
),
1829 sizeof (struct mem_region
), mem_region_cmp
);
1831 /* Check that regions do not overlap. Simultaneously assign
1832 a numbering for the "mem" commands to use to refer to
1835 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1837 this_one
->number
= ix
;
1839 if (last_one
&& last_one
->hi
> this_one
->lo
)
1841 warning (_("Overlapping regions in memory map: ignoring"));
1842 VEC_free (mem_region_s
, result
);
1845 last_one
= this_one
;
1852 target_flash_erase (ULONGEST address
, LONGEST length
)
1854 struct target_ops
*t
;
1856 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1857 if (t
->to_flash_erase
!= NULL
)
1860 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1861 hex_string (address
), phex (length
, 0));
1862 t
->to_flash_erase (t
, address
, length
);
1870 target_flash_done (void)
1872 struct target_ops
*t
;
1874 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1875 if (t
->to_flash_done
!= NULL
)
1878 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1879 t
->to_flash_done (t
);
1887 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1888 struct cmd_list_element
*c
, const char *value
)
1890 fprintf_filtered (file
,
1891 _("Mode for reading from readonly sections is %s.\n"),
1895 /* More generic transfers. */
1897 static enum target_xfer_status
1898 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1899 const char *annex
, gdb_byte
*readbuf
,
1900 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1901 ULONGEST
*xfered_len
)
1903 if (object
== TARGET_OBJECT_MEMORY
1904 && ops
->deprecated_xfer_memory
!= NULL
)
1905 /* If available, fall back to the target's
1906 "deprecated_xfer_memory" method. */
1911 if (writebuf
!= NULL
)
1913 void *buffer
= xmalloc (len
);
1914 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1916 memcpy (buffer
, writebuf
, len
);
1917 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1918 1/*write*/, NULL
, ops
);
1919 do_cleanups (cleanup
);
1921 if (readbuf
!= NULL
)
1922 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1923 0/*read*/, NULL
, ops
);
1926 *xfered_len
= (ULONGEST
) xfered
;
1927 return TARGET_XFER_E_IO
;
1929 else if (xfered
== 0 && errno
== 0)
1930 /* "deprecated_xfer_memory" uses 0, cross checked against
1931 ERRNO as one indication of an error. */
1932 return TARGET_XFER_EOF
;
1934 return TARGET_XFER_E_IO
;
1938 gdb_assert (ops
->beneath
!= NULL
);
1939 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1940 readbuf
, writebuf
, offset
, len
,
1945 /* Target vector read/write partial wrapper functions. */
1947 static enum target_xfer_status
1948 target_read_partial (struct target_ops
*ops
,
1949 enum target_object object
,
1950 const char *annex
, gdb_byte
*buf
,
1951 ULONGEST offset
, ULONGEST len
,
1952 ULONGEST
*xfered_len
)
1954 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
1958 static enum target_xfer_status
1959 target_write_partial (struct target_ops
*ops
,
1960 enum target_object object
,
1961 const char *annex
, const gdb_byte
*buf
,
1962 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
1964 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
1968 /* Wrappers to perform the full transfer. */
1970 /* For docs on target_read see target.h. */
1973 target_read (struct target_ops
*ops
,
1974 enum target_object object
,
1975 const char *annex
, gdb_byte
*buf
,
1976 ULONGEST offset
, LONGEST len
)
1980 while (xfered
< len
)
1982 ULONGEST xfered_len
;
1983 enum target_xfer_status status
;
1985 status
= target_read_partial (ops
, object
, annex
,
1986 (gdb_byte
*) buf
+ xfered
,
1987 offset
+ xfered
, len
- xfered
,
1990 /* Call an observer, notifying them of the xfer progress? */
1991 if (status
== TARGET_XFER_EOF
)
1993 else if (status
== TARGET_XFER_OK
)
1995 xfered
+= xfered_len
;
2005 /* Assuming that the entire [begin, end) range of memory cannot be
2006 read, try to read whatever subrange is possible to read.
2008 The function returns, in RESULT, either zero or one memory block.
2009 If there's a readable subrange at the beginning, it is completely
2010 read and returned. Any further readable subrange will not be read.
2011 Otherwise, if there's a readable subrange at the end, it will be
2012 completely read and returned. Any readable subranges before it
2013 (obviously, not starting at the beginning), will be ignored. In
2014 other cases -- either no readable subrange, or readable subrange(s)
2015 that is neither at the beginning, or end, nothing is returned.
2017 The purpose of this function is to handle a read across a boundary
2018 of accessible memory in a case when memory map is not available.
2019 The above restrictions are fine for this case, but will give
2020 incorrect results if the memory is 'patchy'. However, supporting
2021 'patchy' memory would require trying to read every single byte,
2022 and it seems unacceptable solution. Explicit memory map is
2023 recommended for this case -- and target_read_memory_robust will
2024 take care of reading multiple ranges then. */
2027 read_whatever_is_readable (struct target_ops
*ops
,
2028 ULONGEST begin
, ULONGEST end
,
2029 VEC(memory_read_result_s
) **result
)
2031 gdb_byte
*buf
= xmalloc (end
- begin
);
2032 ULONGEST current_begin
= begin
;
2033 ULONGEST current_end
= end
;
2035 memory_read_result_s r
;
2036 ULONGEST xfered_len
;
2038 /* If we previously failed to read 1 byte, nothing can be done here. */
2039 if (end
- begin
<= 1)
2045 /* Check that either first or the last byte is readable, and give up
2046 if not. This heuristic is meant to permit reading accessible memory
2047 at the boundary of accessible region. */
2048 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2049 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
2054 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2055 buf
+ (end
-begin
) - 1, end
- 1, 1,
2056 &xfered_len
) == TARGET_XFER_OK
)
2067 /* Loop invariant is that the [current_begin, current_end) was previously
2068 found to be not readable as a whole.
2070 Note loop condition -- if the range has 1 byte, we can't divide the range
2071 so there's no point trying further. */
2072 while (current_end
- current_begin
> 1)
2074 ULONGEST first_half_begin
, first_half_end
;
2075 ULONGEST second_half_begin
, second_half_end
;
2077 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2081 first_half_begin
= current_begin
;
2082 first_half_end
= middle
;
2083 second_half_begin
= middle
;
2084 second_half_end
= current_end
;
2088 first_half_begin
= middle
;
2089 first_half_end
= current_end
;
2090 second_half_begin
= current_begin
;
2091 second_half_end
= middle
;
2094 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2095 buf
+ (first_half_begin
- begin
),
2097 first_half_end
- first_half_begin
);
2099 if (xfer
== first_half_end
- first_half_begin
)
2101 /* This half reads up fine. So, the error must be in the
2103 current_begin
= second_half_begin
;
2104 current_end
= second_half_end
;
2108 /* This half is not readable. Because we've tried one byte, we
2109 know some part of this half if actually redable. Go to the next
2110 iteration to divide again and try to read.
2112 We don't handle the other half, because this function only tries
2113 to read a single readable subrange. */
2114 current_begin
= first_half_begin
;
2115 current_end
= first_half_end
;
2121 /* The [begin, current_begin) range has been read. */
2123 r
.end
= current_begin
;
2128 /* The [current_end, end) range has been read. */
2129 LONGEST rlen
= end
- current_end
;
2131 r
.data
= xmalloc (rlen
);
2132 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2133 r
.begin
= current_end
;
2137 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2141 free_memory_read_result_vector (void *x
)
2143 VEC(memory_read_result_s
) *v
= x
;
2144 memory_read_result_s
*current
;
2147 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2149 xfree (current
->data
);
2151 VEC_free (memory_read_result_s
, v
);
2154 VEC(memory_read_result_s
) *
2155 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2157 VEC(memory_read_result_s
) *result
= 0;
2160 while (xfered
< len
)
2162 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2165 /* If there is no explicit region, a fake one should be created. */
2166 gdb_assert (region
);
2168 if (region
->hi
== 0)
2169 rlen
= len
- xfered
;
2171 rlen
= region
->hi
- offset
;
2173 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2175 /* Cannot read this region. Note that we can end up here only
2176 if the region is explicitly marked inaccessible, or
2177 'inaccessible-by-default' is in effect. */
2182 LONGEST to_read
= min (len
- xfered
, rlen
);
2183 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2185 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2186 (gdb_byte
*) buffer
,
2187 offset
+ xfered
, to_read
);
2188 /* Call an observer, notifying them of the xfer progress? */
2191 /* Got an error reading full chunk. See if maybe we can read
2194 read_whatever_is_readable (ops
, offset
+ xfered
,
2195 offset
+ xfered
+ to_read
, &result
);
2200 struct memory_read_result r
;
2202 r
.begin
= offset
+ xfered
;
2203 r
.end
= r
.begin
+ xfer
;
2204 VEC_safe_push (memory_read_result_s
, result
, &r
);
2214 /* An alternative to target_write with progress callbacks. */
2217 target_write_with_progress (struct target_ops
*ops
,
2218 enum target_object object
,
2219 const char *annex
, const gdb_byte
*buf
,
2220 ULONGEST offset
, LONGEST len
,
2221 void (*progress
) (ULONGEST
, void *), void *baton
)
2225 /* Give the progress callback a chance to set up. */
2227 (*progress
) (0, baton
);
2229 while (xfered
< len
)
2231 ULONGEST xfered_len
;
2232 enum target_xfer_status status
;
2234 status
= target_write_partial (ops
, object
, annex
,
2235 (gdb_byte
*) buf
+ xfered
,
2236 offset
+ xfered
, len
- xfered
,
2239 if (status
== TARGET_XFER_EOF
)
2241 if (TARGET_XFER_STATUS_ERROR_P (status
))
2244 gdb_assert (status
== TARGET_XFER_OK
);
2246 (*progress
) (xfered_len
, baton
);
2248 xfered
+= xfered_len
;
2254 /* For docs on target_write see target.h. */
2257 target_write (struct target_ops
*ops
,
2258 enum target_object object
,
2259 const char *annex
, const gdb_byte
*buf
,
2260 ULONGEST offset
, LONGEST len
)
2262 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2266 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2267 the size of the transferred data. PADDING additional bytes are
2268 available in *BUF_P. This is a helper function for
2269 target_read_alloc; see the declaration of that function for more
2273 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2274 const char *annex
, gdb_byte
**buf_p
, int padding
)
2276 size_t buf_alloc
, buf_pos
;
2279 /* This function does not have a length parameter; it reads the
2280 entire OBJECT). Also, it doesn't support objects fetched partly
2281 from one target and partly from another (in a different stratum,
2282 e.g. a core file and an executable). Both reasons make it
2283 unsuitable for reading memory. */
2284 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2286 /* Start by reading up to 4K at a time. The target will throttle
2287 this number down if necessary. */
2289 buf
= xmalloc (buf_alloc
);
2293 ULONGEST xfered_len
;
2294 enum target_xfer_status status
;
2296 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2297 buf_pos
, buf_alloc
- buf_pos
- padding
,
2300 if (status
== TARGET_XFER_EOF
)
2302 /* Read all there was. */
2309 else if (status
!= TARGET_XFER_OK
)
2311 /* An error occurred. */
2313 return TARGET_XFER_E_IO
;
2316 buf_pos
+= xfered_len
;
2318 /* If the buffer is filling up, expand it. */
2319 if (buf_alloc
< buf_pos
* 2)
2322 buf
= xrealloc (buf
, buf_alloc
);
2329 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2330 the size of the transferred data. See the declaration in "target.h"
2331 function for more information about the return value. */
2334 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2335 const char *annex
, gdb_byte
**buf_p
)
2337 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2340 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2341 returned as a string, allocated using xmalloc. If an error occurs
2342 or the transfer is unsupported, NULL is returned. Empty objects
2343 are returned as allocated but empty strings. A warning is issued
2344 if the result contains any embedded NUL bytes. */
2347 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2352 LONGEST i
, transferred
;
2354 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2355 bufstr
= (char *) buffer
;
2357 if (transferred
< 0)
2360 if (transferred
== 0)
2361 return xstrdup ("");
2363 bufstr
[transferred
] = 0;
2365 /* Check for embedded NUL bytes; but allow trailing NULs. */
2366 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2369 warning (_("target object %d, annex %s, "
2370 "contained unexpected null characters"),
2371 (int) object
, annex
? annex
: "(none)");
2378 /* Memory transfer methods. */
2381 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2384 /* This method is used to read from an alternate, non-current
2385 target. This read must bypass the overlay support (as symbols
2386 don't match this target), and GDB's internal cache (wrong cache
2387 for this target). */
2388 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2390 memory_error (TARGET_XFER_E_IO
, addr
);
2394 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2395 int len
, enum bfd_endian byte_order
)
2397 gdb_byte buf
[sizeof (ULONGEST
)];
2399 gdb_assert (len
<= sizeof (buf
));
2400 get_target_memory (ops
, addr
, buf
, len
);
2401 return extract_unsigned_integer (buf
, len
, byte_order
);
2407 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2408 struct bp_target_info
*bp_tgt
)
2410 if (!may_insert_breakpoints
)
2412 warning (_("May not insert breakpoints"));
2416 return current_target
.to_insert_breakpoint (¤t_target
,
2423 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2424 struct bp_target_info
*bp_tgt
)
2426 /* This is kind of a weird case to handle, but the permission might
2427 have been changed after breakpoints were inserted - in which case
2428 we should just take the user literally and assume that any
2429 breakpoints should be left in place. */
2430 if (!may_insert_breakpoints
)
2432 warning (_("May not remove breakpoints"));
2436 return current_target
.to_remove_breakpoint (¤t_target
,
2441 target_info (char *args
, int from_tty
)
2443 struct target_ops
*t
;
2444 int has_all_mem
= 0;
2446 if (symfile_objfile
!= NULL
)
2447 printf_unfiltered (_("Symbols from \"%s\".\n"),
2448 objfile_name (symfile_objfile
));
2450 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2452 if (!(*t
->to_has_memory
) (t
))
2455 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2458 printf_unfiltered (_("\tWhile running this, "
2459 "GDB does not access memory from...\n"));
2460 printf_unfiltered ("%s:\n", t
->to_longname
);
2461 (t
->to_files_info
) (t
);
2462 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2466 /* This function is called before any new inferior is created, e.g.
2467 by running a program, attaching, or connecting to a target.
2468 It cleans up any state from previous invocations which might
2469 change between runs. This is a subset of what target_preopen
2470 resets (things which might change between targets). */
2473 target_pre_inferior (int from_tty
)
2475 /* Clear out solib state. Otherwise the solib state of the previous
2476 inferior might have survived and is entirely wrong for the new
2477 target. This has been observed on GNU/Linux using glibc 2.3. How
2489 Cannot access memory at address 0xdeadbeef
2492 /* In some OSs, the shared library list is the same/global/shared
2493 across inferiors. If code is shared between processes, so are
2494 memory regions and features. */
2495 if (!gdbarch_has_global_solist (target_gdbarch ()))
2497 no_shared_libraries (NULL
, from_tty
);
2499 invalidate_target_mem_regions ();
2501 target_clear_description ();
2504 agent_capability_invalidate ();
2507 /* Callback for iterate_over_inferiors. Gets rid of the given
2511 dispose_inferior (struct inferior
*inf
, void *args
)
2513 struct thread_info
*thread
;
2515 thread
= any_thread_of_process (inf
->pid
);
2518 switch_to_thread (thread
->ptid
);
2520 /* Core inferiors actually should be detached, not killed. */
2521 if (target_has_execution
)
2524 target_detach (NULL
, 0);
2530 /* This is to be called by the open routine before it does
2534 target_preopen (int from_tty
)
2538 if (have_inferiors ())
2541 || !have_live_inferiors ()
2542 || query (_("A program is being debugged already. Kill it? ")))
2543 iterate_over_inferiors (dispose_inferior
, NULL
);
2545 error (_("Program not killed."));
2548 /* Calling target_kill may remove the target from the stack. But if
2549 it doesn't (which seems like a win for UDI), remove it now. */
2550 /* Leave the exec target, though. The user may be switching from a
2551 live process to a core of the same program. */
2552 pop_all_targets_above (file_stratum
);
2554 target_pre_inferior (from_tty
);
2557 /* Detach a target after doing deferred register stores. */
2560 target_detach (const char *args
, int from_tty
)
2562 struct target_ops
* t
;
2564 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2565 /* Don't remove global breakpoints here. They're removed on
2566 disconnection from the target. */
2569 /* If we're in breakpoints-always-inserted mode, have to remove
2570 them before detaching. */
2571 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2573 prepare_for_detach ();
2575 current_target
.to_detach (¤t_target
, args
, from_tty
);
2577 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2582 target_disconnect (char *args
, int from_tty
)
2584 struct target_ops
*t
;
2586 /* If we're in breakpoints-always-inserted mode or if breakpoints
2587 are global across processes, we have to remove them before
2589 remove_breakpoints ();
2591 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2592 if (t
->to_disconnect
!= NULL
)
2595 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2597 t
->to_disconnect (t
, args
, from_tty
);
2605 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2607 struct target_ops
*t
;
2608 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2613 char *status_string
;
2614 char *options_string
;
2616 status_string
= target_waitstatus_to_string (status
);
2617 options_string
= target_options_to_string (options
);
2618 fprintf_unfiltered (gdb_stdlog
,
2619 "target_wait (%d, status, options={%s})"
2621 ptid_get_pid (ptid
), options_string
,
2622 ptid_get_pid (retval
), status_string
);
2623 xfree (status_string
);
2624 xfree (options_string
);
2631 target_pid_to_str (ptid_t ptid
)
2633 struct target_ops
*t
;
2635 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2637 if (t
->to_pid_to_str
!= NULL
)
2638 return (*t
->to_pid_to_str
) (t
, ptid
);
2641 return normal_pid_to_str (ptid
);
2645 target_thread_name (struct thread_info
*info
)
2647 return current_target
.to_thread_name (¤t_target
, info
);
2651 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2653 struct target_ops
*t
;
2655 target_dcache_invalidate ();
2657 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2659 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2660 ptid_get_pid (ptid
),
2661 step
? "step" : "continue",
2662 gdb_signal_to_name (signal
));
2664 registers_changed_ptid (ptid
);
2665 set_executing (ptid
, 1);
2666 set_running (ptid
, 1);
2667 clear_inline_frame_state (ptid
);
2671 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2673 struct target_ops
*t
;
2675 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2677 if (t
->to_pass_signals
!= NULL
)
2683 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2686 for (i
= 0; i
< numsigs
; i
++)
2687 if (pass_signals
[i
])
2688 fprintf_unfiltered (gdb_stdlog
, " %s",
2689 gdb_signal_to_name (i
));
2691 fprintf_unfiltered (gdb_stdlog
, " })\n");
2694 (*t
->to_pass_signals
) (t
, numsigs
, pass_signals
);
2701 target_program_signals (int numsigs
, unsigned char *program_signals
)
2703 struct target_ops
*t
;
2705 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2707 if (t
->to_program_signals
!= NULL
)
2713 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2716 for (i
= 0; i
< numsigs
; i
++)
2717 if (program_signals
[i
])
2718 fprintf_unfiltered (gdb_stdlog
, " %s",
2719 gdb_signal_to_name (i
));
2721 fprintf_unfiltered (gdb_stdlog
, " })\n");
2724 (*t
->to_program_signals
) (t
, numsigs
, program_signals
);
2730 /* Look through the list of possible targets for a target that can
2734 target_follow_fork (int follow_child
, int detach_fork
)
2736 struct target_ops
*t
;
2738 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2740 if (t
->to_follow_fork
!= NULL
)
2742 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2745 fprintf_unfiltered (gdb_stdlog
,
2746 "target_follow_fork (%d, %d) = %d\n",
2747 follow_child
, detach_fork
, retval
);
2752 /* Some target returned a fork event, but did not know how to follow it. */
2753 internal_error (__FILE__
, __LINE__
,
2754 _("could not find a target to follow fork"));
2758 target_mourn_inferior (void)
2760 struct target_ops
*t
;
2762 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2764 if (t
->to_mourn_inferior
!= NULL
)
2766 t
->to_mourn_inferior (t
);
2768 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2770 /* We no longer need to keep handles on any of the object files.
2771 Make sure to release them to avoid unnecessarily locking any
2772 of them while we're not actually debugging. */
2773 bfd_cache_close_all ();
2779 internal_error (__FILE__
, __LINE__
,
2780 _("could not find a target to follow mourn inferior"));
2783 /* Look for a target which can describe architectural features, starting
2784 from TARGET. If we find one, return its description. */
2786 const struct target_desc
*
2787 target_read_description (struct target_ops
*target
)
2789 struct target_ops
*t
;
2791 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2792 if (t
->to_read_description
!= NULL
)
2794 const struct target_desc
*tdesc
;
2796 tdesc
= t
->to_read_description (t
);
2804 /* The default implementation of to_search_memory.
2805 This implements a basic search of memory, reading target memory and
2806 performing the search here (as opposed to performing the search in on the
2807 target side with, for example, gdbserver). */
2810 simple_search_memory (struct target_ops
*ops
,
2811 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2812 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2813 CORE_ADDR
*found_addrp
)
2815 /* NOTE: also defined in find.c testcase. */
2816 #define SEARCH_CHUNK_SIZE 16000
2817 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2818 /* Buffer to hold memory contents for searching. */
2819 gdb_byte
*search_buf
;
2820 unsigned search_buf_size
;
2821 struct cleanup
*old_cleanups
;
2823 search_buf_size
= chunk_size
+ pattern_len
- 1;
2825 /* No point in trying to allocate a buffer larger than the search space. */
2826 if (search_space_len
< search_buf_size
)
2827 search_buf_size
= search_space_len
;
2829 search_buf
= malloc (search_buf_size
);
2830 if (search_buf
== NULL
)
2831 error (_("Unable to allocate memory to perform the search."));
2832 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2834 /* Prime the search buffer. */
2836 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2837 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2839 warning (_("Unable to access %s bytes of target "
2840 "memory at %s, halting search."),
2841 pulongest (search_buf_size
), hex_string (start_addr
));
2842 do_cleanups (old_cleanups
);
2846 /* Perform the search.
2848 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2849 When we've scanned N bytes we copy the trailing bytes to the start and
2850 read in another N bytes. */
2852 while (search_space_len
>= pattern_len
)
2854 gdb_byte
*found_ptr
;
2855 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2857 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2858 pattern
, pattern_len
);
2860 if (found_ptr
!= NULL
)
2862 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2864 *found_addrp
= found_addr
;
2865 do_cleanups (old_cleanups
);
2869 /* Not found in this chunk, skip to next chunk. */
2871 /* Don't let search_space_len wrap here, it's unsigned. */
2872 if (search_space_len
>= chunk_size
)
2873 search_space_len
-= chunk_size
;
2875 search_space_len
= 0;
2877 if (search_space_len
>= pattern_len
)
2879 unsigned keep_len
= search_buf_size
- chunk_size
;
2880 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2883 /* Copy the trailing part of the previous iteration to the front
2884 of the buffer for the next iteration. */
2885 gdb_assert (keep_len
== pattern_len
- 1);
2886 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2888 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2890 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2891 search_buf
+ keep_len
, read_addr
,
2892 nr_to_read
) != nr_to_read
)
2894 warning (_("Unable to access %s bytes of target "
2895 "memory at %s, halting search."),
2896 plongest (nr_to_read
),
2897 hex_string (read_addr
));
2898 do_cleanups (old_cleanups
);
2902 start_addr
+= chunk_size
;
2908 do_cleanups (old_cleanups
);
2912 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2913 sequence of bytes in PATTERN with length PATTERN_LEN.
2915 The result is 1 if found, 0 if not found, and -1 if there was an error
2916 requiring halting of the search (e.g. memory read error).
2917 If the pattern is found the address is recorded in FOUND_ADDRP. */
2920 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2921 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2922 CORE_ADDR
*found_addrp
)
2924 struct target_ops
*t
;
2927 /* We don't use INHERIT to set current_target.to_search_memory,
2928 so we have to scan the target stack and handle targetdebug
2932 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2933 hex_string (start_addr
));
2935 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2936 if (t
->to_search_memory
!= NULL
)
2941 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2942 pattern
, pattern_len
, found_addrp
);
2946 /* If a special version of to_search_memory isn't available, use the
2948 found
= simple_search_memory (current_target
.beneath
,
2949 start_addr
, search_space_len
,
2950 pattern
, pattern_len
, found_addrp
);
2954 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2959 /* Look through the currently pushed targets. If none of them will
2960 be able to restart the currently running process, issue an error
2964 target_require_runnable (void)
2966 struct target_ops
*t
;
2968 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2970 /* If this target knows how to create a new program, then
2971 assume we will still be able to after killing the current
2972 one. Either killing and mourning will not pop T, or else
2973 find_default_run_target will find it again. */
2974 if (t
->to_create_inferior
!= NULL
)
2977 /* Do not worry about thread_stratum targets that can not
2978 create inferiors. Assume they will be pushed again if
2979 necessary, and continue to the process_stratum. */
2980 if (t
->to_stratum
== thread_stratum
2981 || t
->to_stratum
== arch_stratum
)
2984 error (_("The \"%s\" target does not support \"run\". "
2985 "Try \"help target\" or \"continue\"."),
2989 /* This function is only called if the target is running. In that
2990 case there should have been a process_stratum target and it
2991 should either know how to create inferiors, or not... */
2992 internal_error (__FILE__
, __LINE__
, _("No targets found"));
2995 /* Look through the list of possible targets for a target that can
2996 execute a run or attach command without any other data. This is
2997 used to locate the default process stratum.
2999 If DO_MESG is not NULL, the result is always valid (error() is
3000 called for errors); else, return NULL on error. */
3002 static struct target_ops
*
3003 find_default_run_target (char *do_mesg
)
3005 struct target_ops
**t
;
3006 struct target_ops
*runable
= NULL
;
3011 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3014 if ((*t
)->to_can_run
&& target_can_run (*t
))
3024 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3033 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3035 struct target_ops
*t
;
3037 t
= find_default_run_target ("attach");
3038 (t
->to_attach
) (t
, args
, from_tty
);
3043 find_default_create_inferior (struct target_ops
*ops
,
3044 char *exec_file
, char *allargs
, char **env
,
3047 struct target_ops
*t
;
3049 t
= find_default_run_target ("run");
3050 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3055 find_default_can_async_p (struct target_ops
*ignore
)
3057 struct target_ops
*t
;
3059 /* This may be called before the target is pushed on the stack;
3060 look for the default process stratum. If there's none, gdb isn't
3061 configured with a native debugger, and target remote isn't
3063 t
= find_default_run_target (NULL
);
3064 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
3065 return (t
->to_can_async_p
) (t
);
3070 find_default_is_async_p (struct target_ops
*ignore
)
3072 struct target_ops
*t
;
3074 /* This may be called before the target is pushed on the stack;
3075 look for the default process stratum. If there's none, gdb isn't
3076 configured with a native debugger, and target remote isn't
3078 t
= find_default_run_target (NULL
);
3079 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
3080 return (t
->to_is_async_p
) (t
);
3085 find_default_supports_non_stop (struct target_ops
*self
)
3087 struct target_ops
*t
;
3089 t
= find_default_run_target (NULL
);
3090 if (t
&& t
->to_supports_non_stop
)
3091 return (t
->to_supports_non_stop
) (t
);
3096 target_supports_non_stop (void)
3098 struct target_ops
*t
;
3100 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3101 if (t
->to_supports_non_stop
)
3102 return t
->to_supports_non_stop (t
);
3107 /* Implement the "info proc" command. */
3110 target_info_proc (char *args
, enum info_proc_what what
)
3112 struct target_ops
*t
;
3114 /* If we're already connected to something that can get us OS
3115 related data, use it. Otherwise, try using the native
3117 if (current_target
.to_stratum
>= process_stratum
)
3118 t
= current_target
.beneath
;
3120 t
= find_default_run_target (NULL
);
3122 for (; t
!= NULL
; t
= t
->beneath
)
3124 if (t
->to_info_proc
!= NULL
)
3126 t
->to_info_proc (t
, args
, what
);
3129 fprintf_unfiltered (gdb_stdlog
,
3130 "target_info_proc (\"%s\", %d)\n", args
, what
);
3140 find_default_supports_disable_randomization (struct target_ops
*self
)
3142 struct target_ops
*t
;
3144 t
= find_default_run_target (NULL
);
3145 if (t
&& t
->to_supports_disable_randomization
)
3146 return (t
->to_supports_disable_randomization
) (t
);
3151 target_supports_disable_randomization (void)
3153 struct target_ops
*t
;
3155 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3156 if (t
->to_supports_disable_randomization
)
3157 return t
->to_supports_disable_randomization (t
);
3163 target_get_osdata (const char *type
)
3165 struct target_ops
*t
;
3167 /* If we're already connected to something that can get us OS
3168 related data, use it. Otherwise, try using the native
3170 if (current_target
.to_stratum
>= process_stratum
)
3171 t
= current_target
.beneath
;
3173 t
= find_default_run_target ("get OS data");
3178 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3181 /* Determine the current address space of thread PTID. */
3183 struct address_space
*
3184 target_thread_address_space (ptid_t ptid
)
3186 struct address_space
*aspace
;
3187 struct inferior
*inf
;
3188 struct target_ops
*t
;
3190 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3192 if (t
->to_thread_address_space
!= NULL
)
3194 aspace
= t
->to_thread_address_space (t
, ptid
);
3195 gdb_assert (aspace
);
3198 fprintf_unfiltered (gdb_stdlog
,
3199 "target_thread_address_space (%s) = %d\n",
3200 target_pid_to_str (ptid
),
3201 address_space_num (aspace
));
3206 /* Fall-back to the "main" address space of the inferior. */
3207 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3209 if (inf
== NULL
|| inf
->aspace
== NULL
)
3210 internal_error (__FILE__
, __LINE__
,
3211 _("Can't determine the current "
3212 "address space of thread %s\n"),
3213 target_pid_to_str (ptid
));
3219 /* Target file operations. */
3221 static struct target_ops
*
3222 default_fileio_target (void)
3224 /* If we're already connected to something that can perform
3225 file I/O, use it. Otherwise, try using the native target. */
3226 if (current_target
.to_stratum
>= process_stratum
)
3227 return current_target
.beneath
;
3229 return find_default_run_target ("file I/O");
3232 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3233 target file descriptor, or -1 if an error occurs (and set
3236 target_fileio_open (const char *filename
, int flags
, int mode
,
3239 struct target_ops
*t
;
3241 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3243 if (t
->to_fileio_open
!= NULL
)
3245 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3248 fprintf_unfiltered (gdb_stdlog
,
3249 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3250 filename
, flags
, mode
,
3251 fd
, fd
!= -1 ? 0 : *target_errno
);
3256 *target_errno
= FILEIO_ENOSYS
;
3260 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3261 Return the number of bytes written, or -1 if an error occurs
3262 (and set *TARGET_ERRNO). */
3264 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3265 ULONGEST offset
, int *target_errno
)
3267 struct target_ops
*t
;
3269 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3271 if (t
->to_fileio_pwrite
!= NULL
)
3273 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3277 fprintf_unfiltered (gdb_stdlog
,
3278 "target_fileio_pwrite (%d,...,%d,%s) "
3280 fd
, len
, pulongest (offset
),
3281 ret
, ret
!= -1 ? 0 : *target_errno
);
3286 *target_errno
= FILEIO_ENOSYS
;
3290 /* Read up to LEN bytes FD on the target into READ_BUF.
3291 Return the number of bytes read, or -1 if an error occurs
3292 (and set *TARGET_ERRNO). */
3294 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3295 ULONGEST offset
, int *target_errno
)
3297 struct target_ops
*t
;
3299 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3301 if (t
->to_fileio_pread
!= NULL
)
3303 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3307 fprintf_unfiltered (gdb_stdlog
,
3308 "target_fileio_pread (%d,...,%d,%s) "
3310 fd
, len
, pulongest (offset
),
3311 ret
, ret
!= -1 ? 0 : *target_errno
);
3316 *target_errno
= FILEIO_ENOSYS
;
3320 /* Close FD on the target. Return 0, or -1 if an error occurs
3321 (and set *TARGET_ERRNO). */
3323 target_fileio_close (int fd
, int *target_errno
)
3325 struct target_ops
*t
;
3327 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3329 if (t
->to_fileio_close
!= NULL
)
3331 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3334 fprintf_unfiltered (gdb_stdlog
,
3335 "target_fileio_close (%d) = %d (%d)\n",
3336 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3341 *target_errno
= FILEIO_ENOSYS
;
3345 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3346 occurs (and set *TARGET_ERRNO). */
3348 target_fileio_unlink (const char *filename
, int *target_errno
)
3350 struct target_ops
*t
;
3352 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3354 if (t
->to_fileio_unlink
!= NULL
)
3356 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3359 fprintf_unfiltered (gdb_stdlog
,
3360 "target_fileio_unlink (%s) = %d (%d)\n",
3361 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3366 *target_errno
= FILEIO_ENOSYS
;
3370 /* Read value of symbolic link FILENAME on the target. Return a
3371 null-terminated string allocated via xmalloc, or NULL if an error
3372 occurs (and set *TARGET_ERRNO). */
3374 target_fileio_readlink (const char *filename
, int *target_errno
)
3376 struct target_ops
*t
;
3378 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3380 if (t
->to_fileio_readlink
!= NULL
)
3382 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3385 fprintf_unfiltered (gdb_stdlog
,
3386 "target_fileio_readlink (%s) = %s (%d)\n",
3387 filename
, ret
? ret
: "(nil)",
3388 ret
? 0 : *target_errno
);
3393 *target_errno
= FILEIO_ENOSYS
;
3398 target_fileio_close_cleanup (void *opaque
)
3400 int fd
= *(int *) opaque
;
3403 target_fileio_close (fd
, &target_errno
);
3406 /* Read target file FILENAME. Store the result in *BUF_P and
3407 return the size of the transferred data. PADDING additional bytes are
3408 available in *BUF_P. This is a helper function for
3409 target_fileio_read_alloc; see the declaration of that function for more
3413 target_fileio_read_alloc_1 (const char *filename
,
3414 gdb_byte
**buf_p
, int padding
)
3416 struct cleanup
*close_cleanup
;
3417 size_t buf_alloc
, buf_pos
;
3423 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3427 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3429 /* Start by reading up to 4K at a time. The target will throttle
3430 this number down if necessary. */
3432 buf
= xmalloc (buf_alloc
);
3436 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3437 buf_alloc
- buf_pos
- padding
, buf_pos
,
3441 /* An error occurred. */
3442 do_cleanups (close_cleanup
);
3448 /* Read all there was. */
3449 do_cleanups (close_cleanup
);
3459 /* If the buffer is filling up, expand it. */
3460 if (buf_alloc
< buf_pos
* 2)
3463 buf
= xrealloc (buf
, buf_alloc
);
3470 /* Read target file FILENAME. Store the result in *BUF_P and return
3471 the size of the transferred data. See the declaration in "target.h"
3472 function for more information about the return value. */
3475 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3477 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3480 /* Read target file FILENAME. The result is NUL-terminated and
3481 returned as a string, allocated using xmalloc. If an error occurs
3482 or the transfer is unsupported, NULL is returned. Empty objects
3483 are returned as allocated but empty strings. A warning is issued
3484 if the result contains any embedded NUL bytes. */
3487 target_fileio_read_stralloc (const char *filename
)
3491 LONGEST i
, transferred
;
3493 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3494 bufstr
= (char *) buffer
;
3496 if (transferred
< 0)
3499 if (transferred
== 0)
3500 return xstrdup ("");
3502 bufstr
[transferred
] = 0;
3504 /* Check for embedded NUL bytes; but allow trailing NULs. */
3505 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3508 warning (_("target file %s "
3509 "contained unexpected null characters"),
3519 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3520 CORE_ADDR addr
, int len
)
3522 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3526 default_watchpoint_addr_within_range (struct target_ops
*target
,
3528 CORE_ADDR start
, int length
)
3530 return addr
>= start
&& addr
< start
+ length
;
3533 static struct gdbarch
*
3534 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3536 return target_gdbarch ();
3546 return_minus_one (void)
3558 * Find the next target down the stack from the specified target.
3562 find_target_beneath (struct target_ops
*t
)
3570 find_target_at (enum strata stratum
)
3572 struct target_ops
*t
;
3574 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3575 if (t
->to_stratum
== stratum
)
3582 /* The inferior process has died. Long live the inferior! */
3585 generic_mourn_inferior (void)
3589 ptid
= inferior_ptid
;
3590 inferior_ptid
= null_ptid
;
3592 /* Mark breakpoints uninserted in case something tries to delete a
3593 breakpoint while we delete the inferior's threads (which would
3594 fail, since the inferior is long gone). */
3595 mark_breakpoints_out ();
3597 if (!ptid_equal (ptid
, null_ptid
))
3599 int pid
= ptid_get_pid (ptid
);
3600 exit_inferior (pid
);
3603 /* Note this wipes step-resume breakpoints, so needs to be done
3604 after exit_inferior, which ends up referencing the step-resume
3605 breakpoints through clear_thread_inferior_resources. */
3606 breakpoint_init_inferior (inf_exited
);
3608 registers_changed ();
3610 reopen_exec_file ();
3611 reinit_frame_cache ();
3613 if (deprecated_detach_hook
)
3614 deprecated_detach_hook ();
3617 /* Convert a normal process ID to a string. Returns the string in a
3621 normal_pid_to_str (ptid_t ptid
)
3623 static char buf
[32];
3625 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3630 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3632 return normal_pid_to_str (ptid
);
3635 /* Error-catcher for target_find_memory_regions. */
3637 dummy_find_memory_regions (struct target_ops
*self
,
3638 find_memory_region_ftype ignore1
, void *ignore2
)
3640 error (_("Command not implemented for this target."));
3644 /* Error-catcher for target_make_corefile_notes. */
3646 dummy_make_corefile_notes (struct target_ops
*self
,
3647 bfd
*ignore1
, int *ignore2
)
3649 error (_("Command not implemented for this target."));
3653 /* Set up the handful of non-empty slots needed by the dummy target
3657 init_dummy_target (void)
3659 dummy_target
.to_shortname
= "None";
3660 dummy_target
.to_longname
= "None";
3661 dummy_target
.to_doc
= "";
3662 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3663 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3664 dummy_target
.to_supports_disable_randomization
3665 = find_default_supports_disable_randomization
;
3666 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3667 dummy_target
.to_stratum
= dummy_stratum
;
3668 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3669 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3670 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3671 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3672 dummy_target
.to_has_execution
3673 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3674 dummy_target
.to_magic
= OPS_MAGIC
;
3676 install_dummy_methods (&dummy_target
);
3680 debug_to_open (char *args
, int from_tty
)
3682 debug_target
.to_open (args
, from_tty
);
3684 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3688 target_close (struct target_ops
*targ
)
3690 gdb_assert (!target_is_pushed (targ
));
3692 if (targ
->to_xclose
!= NULL
)
3693 targ
->to_xclose (targ
);
3694 else if (targ
->to_close
!= NULL
)
3695 targ
->to_close (targ
);
3698 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3702 target_attach (char *args
, int from_tty
)
3704 current_target
.to_attach (¤t_target
, args
, from_tty
);
3706 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3711 target_thread_alive (ptid_t ptid
)
3713 struct target_ops
*t
;
3715 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3717 if (t
->to_thread_alive
!= NULL
)
3721 retval
= t
->to_thread_alive (t
, ptid
);
3723 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3724 ptid_get_pid (ptid
), retval
);
3734 target_find_new_threads (void)
3736 struct target_ops
*t
;
3738 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3740 if (t
->to_find_new_threads
!= NULL
)
3742 t
->to_find_new_threads (t
);
3744 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3752 target_stop (ptid_t ptid
)
3756 warning (_("May not interrupt or stop the target, ignoring attempt"));
3760 (*current_target
.to_stop
) (¤t_target
, ptid
);
3764 debug_to_post_attach (struct target_ops
*self
, int pid
)
3766 debug_target
.to_post_attach (&debug_target
, pid
);
3768 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3771 /* Concatenate ELEM to LIST, a comma separate list, and return the
3772 result. The LIST incoming argument is released. */
3775 str_comma_list_concat_elem (char *list
, const char *elem
)
3778 return xstrdup (elem
);
3780 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3783 /* Helper for target_options_to_string. If OPT is present in
3784 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3785 Returns the new resulting string. OPT is removed from
3789 do_option (int *target_options
, char *ret
,
3790 int opt
, char *opt_str
)
3792 if ((*target_options
& opt
) != 0)
3794 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3795 *target_options
&= ~opt
;
3802 target_options_to_string (int target_options
)
3806 #define DO_TARG_OPTION(OPT) \
3807 ret = do_option (&target_options, ret, OPT, #OPT)
3809 DO_TARG_OPTION (TARGET_WNOHANG
);
3811 if (target_options
!= 0)
3812 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3820 debug_print_register (const char * func
,
3821 struct regcache
*regcache
, int regno
)
3823 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3825 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3826 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3827 && gdbarch_register_name (gdbarch
, regno
) != NULL
3828 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3829 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3830 gdbarch_register_name (gdbarch
, regno
));
3832 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3833 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3835 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3836 int i
, size
= register_size (gdbarch
, regno
);
3837 gdb_byte buf
[MAX_REGISTER_SIZE
];
3839 regcache_raw_collect (regcache
, regno
, buf
);
3840 fprintf_unfiltered (gdb_stdlog
, " = ");
3841 for (i
= 0; i
< size
; i
++)
3843 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3845 if (size
<= sizeof (LONGEST
))
3847 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3849 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3850 core_addr_to_string_nz (val
), plongest (val
));
3853 fprintf_unfiltered (gdb_stdlog
, "\n");
3857 target_fetch_registers (struct regcache
*regcache
, int regno
)
3859 struct target_ops
*t
;
3861 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3863 if (t
->to_fetch_registers
!= NULL
)
3865 t
->to_fetch_registers (t
, regcache
, regno
);
3867 debug_print_register ("target_fetch_registers", regcache
, regno
);
3874 target_store_registers (struct regcache
*regcache
, int regno
)
3876 struct target_ops
*t
;
3878 if (!may_write_registers
)
3879 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3881 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3884 debug_print_register ("target_store_registers", regcache
, regno
);
3889 target_core_of_thread (ptid_t ptid
)
3891 struct target_ops
*t
;
3893 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3895 if (t
->to_core_of_thread
!= NULL
)
3897 int retval
= t
->to_core_of_thread (t
, ptid
);
3900 fprintf_unfiltered (gdb_stdlog
,
3901 "target_core_of_thread (%d) = %d\n",
3902 ptid_get_pid (ptid
), retval
);
3911 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3913 struct target_ops
*t
;
3915 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3917 if (t
->to_verify_memory
!= NULL
)
3919 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3922 fprintf_unfiltered (gdb_stdlog
,
3923 "target_verify_memory (%s, %s) = %d\n",
3924 paddress (target_gdbarch (), memaddr
),
3934 /* The documentation for this function is in its prototype declaration in
3938 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3940 struct target_ops
*t
;
3942 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3943 if (t
->to_insert_mask_watchpoint
!= NULL
)
3947 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
3950 fprintf_unfiltered (gdb_stdlog
, "\
3951 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3952 core_addr_to_string (addr
),
3953 core_addr_to_string (mask
), rw
, ret
);
3961 /* The documentation for this function is in its prototype declaration in
3965 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3967 struct target_ops
*t
;
3969 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3970 if (t
->to_remove_mask_watchpoint
!= NULL
)
3974 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
3977 fprintf_unfiltered (gdb_stdlog
, "\
3978 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3979 core_addr_to_string (addr
),
3980 core_addr_to_string (mask
), rw
, ret
);
3988 /* The documentation for this function is in its prototype declaration
3992 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
3994 struct target_ops
*t
;
3996 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3997 if (t
->to_masked_watch_num_registers
!= NULL
)
3998 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4003 /* The documentation for this function is in its prototype declaration
4007 target_ranged_break_num_registers (void)
4009 struct target_ops
*t
;
4011 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4012 if (t
->to_ranged_break_num_registers
!= NULL
)
4013 return t
->to_ranged_break_num_registers (t
);
4020 struct btrace_target_info
*
4021 target_enable_btrace (ptid_t ptid
)
4023 struct target_ops
*t
;
4025 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4026 if (t
->to_enable_btrace
!= NULL
)
4027 return t
->to_enable_btrace (t
, ptid
);
4036 target_disable_btrace (struct btrace_target_info
*btinfo
)
4038 struct target_ops
*t
;
4040 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4041 if (t
->to_disable_btrace
!= NULL
)
4043 t
->to_disable_btrace (t
, btinfo
);
4053 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4055 struct target_ops
*t
;
4057 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4058 if (t
->to_teardown_btrace
!= NULL
)
4060 t
->to_teardown_btrace (t
, btinfo
);
4070 target_read_btrace (VEC (btrace_block_s
) **btrace
,
4071 struct btrace_target_info
*btinfo
,
4072 enum btrace_read_type type
)
4074 struct target_ops
*t
;
4076 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4077 if (t
->to_read_btrace
!= NULL
)
4078 return t
->to_read_btrace (t
, btrace
, btinfo
, type
);
4081 return BTRACE_ERR_NOT_SUPPORTED
;
4087 target_stop_recording (void)
4089 struct target_ops
*t
;
4091 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4092 if (t
->to_stop_recording
!= NULL
)
4094 t
->to_stop_recording (t
);
4098 /* This is optional. */
4104 target_info_record (void)
4106 struct target_ops
*t
;
4108 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4109 if (t
->to_info_record
!= NULL
)
4111 t
->to_info_record (t
);
4121 target_save_record (const char *filename
)
4123 struct target_ops
*t
;
4125 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4126 if (t
->to_save_record
!= NULL
)
4128 t
->to_save_record (t
, filename
);
4138 target_supports_delete_record (void)
4140 struct target_ops
*t
;
4142 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4143 if (t
->to_delete_record
!= NULL
)
4152 target_delete_record (void)
4154 struct target_ops
*t
;
4156 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4157 if (t
->to_delete_record
!= NULL
)
4159 t
->to_delete_record (t
);
4169 target_record_is_replaying (void)
4171 struct target_ops
*t
;
4173 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4174 if (t
->to_record_is_replaying
!= NULL
)
4175 return t
->to_record_is_replaying (t
);
4183 target_goto_record_begin (void)
4185 struct target_ops
*t
;
4187 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4188 if (t
->to_goto_record_begin
!= NULL
)
4190 t
->to_goto_record_begin (t
);
4200 target_goto_record_end (void)
4202 struct target_ops
*t
;
4204 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4205 if (t
->to_goto_record_end
!= NULL
)
4207 t
->to_goto_record_end (t
);
4217 target_goto_record (ULONGEST insn
)
4219 struct target_ops
*t
;
4221 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4222 if (t
->to_goto_record
!= NULL
)
4224 t
->to_goto_record (t
, insn
);
4234 target_insn_history (int size
, int flags
)
4236 struct target_ops
*t
;
4238 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4239 if (t
->to_insn_history
!= NULL
)
4241 t
->to_insn_history (t
, size
, flags
);
4251 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4253 struct target_ops
*t
;
4255 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4256 if (t
->to_insn_history_from
!= NULL
)
4258 t
->to_insn_history_from (t
, from
, size
, flags
);
4268 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4270 struct target_ops
*t
;
4272 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4273 if (t
->to_insn_history_range
!= NULL
)
4275 t
->to_insn_history_range (t
, begin
, end
, flags
);
4285 target_call_history (int size
, int flags
)
4287 struct target_ops
*t
;
4289 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4290 if (t
->to_call_history
!= NULL
)
4292 t
->to_call_history (t
, size
, flags
);
4302 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4304 struct target_ops
*t
;
4306 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4307 if (t
->to_call_history_from
!= NULL
)
4309 t
->to_call_history_from (t
, begin
, size
, flags
);
4319 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4321 struct target_ops
*t
;
4323 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4324 if (t
->to_call_history_range
!= NULL
)
4326 t
->to_call_history_range (t
, begin
, end
, flags
);
4334 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
4336 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
4338 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4343 const struct frame_unwind
*
4344 target_get_unwinder (void)
4346 struct target_ops
*t
;
4348 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4349 if (t
->to_get_unwinder
!= NULL
)
4350 return t
->to_get_unwinder
;
4357 const struct frame_unwind
*
4358 target_get_tailcall_unwinder (void)
4360 struct target_ops
*t
;
4362 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4363 if (t
->to_get_tailcall_unwinder
!= NULL
)
4364 return t
->to_get_tailcall_unwinder
;
4372 forward_target_decr_pc_after_break (struct target_ops
*ops
,
4373 struct gdbarch
*gdbarch
)
4375 for (; ops
!= NULL
; ops
= ops
->beneath
)
4376 if (ops
->to_decr_pc_after_break
!= NULL
)
4377 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
4379 return gdbarch_decr_pc_after_break (gdbarch
);
4385 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
4387 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
4391 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4392 int write
, struct mem_attrib
*attrib
,
4393 struct target_ops
*target
)
4397 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4400 fprintf_unfiltered (gdb_stdlog
,
4401 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4402 paddress (target_gdbarch (), memaddr
), len
,
4403 write
? "write" : "read", retval
);
4409 fputs_unfiltered (", bytes =", gdb_stdlog
);
4410 for (i
= 0; i
< retval
; i
++)
4412 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4414 if (targetdebug
< 2 && i
> 0)
4416 fprintf_unfiltered (gdb_stdlog
, " ...");
4419 fprintf_unfiltered (gdb_stdlog
, "\n");
4422 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4426 fputc_unfiltered ('\n', gdb_stdlog
);
4432 debug_to_files_info (struct target_ops
*target
)
4434 debug_target
.to_files_info (target
);
4436 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4440 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4441 struct bp_target_info
*bp_tgt
)
4445 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4447 fprintf_unfiltered (gdb_stdlog
,
4448 "target_insert_breakpoint (%s, xxx) = %ld\n",
4449 core_addr_to_string (bp_tgt
->placed_address
),
4450 (unsigned long) retval
);
4455 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4456 struct bp_target_info
*bp_tgt
)
4460 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4462 fprintf_unfiltered (gdb_stdlog
,
4463 "target_remove_breakpoint (%s, xxx) = %ld\n",
4464 core_addr_to_string (bp_tgt
->placed_address
),
4465 (unsigned long) retval
);
4470 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4471 int type
, int cnt
, int from_tty
)
4475 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4476 type
, cnt
, from_tty
);
4478 fprintf_unfiltered (gdb_stdlog
,
4479 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4480 (unsigned long) type
,
4481 (unsigned long) cnt
,
4482 (unsigned long) from_tty
,
4483 (unsigned long) retval
);
4488 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4489 CORE_ADDR addr
, int len
)
4493 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4496 fprintf_unfiltered (gdb_stdlog
,
4497 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4498 core_addr_to_string (addr
), (unsigned long) len
,
4499 core_addr_to_string (retval
));
4504 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4505 CORE_ADDR addr
, int len
, int rw
,
4506 struct expression
*cond
)
4510 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4514 fprintf_unfiltered (gdb_stdlog
,
4515 "target_can_accel_watchpoint_condition "
4516 "(%s, %d, %d, %s) = %ld\n",
4517 core_addr_to_string (addr
), len
, rw
,
4518 host_address_to_string (cond
), (unsigned long) retval
);
4523 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4527 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4529 fprintf_unfiltered (gdb_stdlog
,
4530 "target_stopped_by_watchpoint () = %ld\n",
4531 (unsigned long) retval
);
4536 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4540 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4542 fprintf_unfiltered (gdb_stdlog
,
4543 "target_stopped_data_address ([%s]) = %ld\n",
4544 core_addr_to_string (*addr
),
4545 (unsigned long)retval
);
4550 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4552 CORE_ADDR start
, int length
)
4556 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4559 fprintf_filtered (gdb_stdlog
,
4560 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4561 core_addr_to_string (addr
), core_addr_to_string (start
),
4567 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4568 struct gdbarch
*gdbarch
,
4569 struct bp_target_info
*bp_tgt
)
4573 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4576 fprintf_unfiltered (gdb_stdlog
,
4577 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4578 core_addr_to_string (bp_tgt
->placed_address
),
4579 (unsigned long) retval
);
4584 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4585 struct gdbarch
*gdbarch
,
4586 struct bp_target_info
*bp_tgt
)
4590 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4593 fprintf_unfiltered (gdb_stdlog
,
4594 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4595 core_addr_to_string (bp_tgt
->placed_address
),
4596 (unsigned long) retval
);
4601 debug_to_insert_watchpoint (struct target_ops
*self
,
4602 CORE_ADDR addr
, int len
, int type
,
4603 struct expression
*cond
)
4607 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4608 addr
, len
, type
, cond
);
4610 fprintf_unfiltered (gdb_stdlog
,
4611 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4612 core_addr_to_string (addr
), len
, type
,
4613 host_address_to_string (cond
), (unsigned long) retval
);
4618 debug_to_remove_watchpoint (struct target_ops
*self
,
4619 CORE_ADDR addr
, int len
, int type
,
4620 struct expression
*cond
)
4624 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4625 addr
, len
, type
, cond
);
4627 fprintf_unfiltered (gdb_stdlog
,
4628 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4629 core_addr_to_string (addr
), len
, type
,
4630 host_address_to_string (cond
), (unsigned long) retval
);
4635 debug_to_terminal_init (struct target_ops
*self
)
4637 debug_target
.to_terminal_init (&debug_target
);
4639 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4643 debug_to_terminal_inferior (struct target_ops
*self
)
4645 debug_target
.to_terminal_inferior (&debug_target
);
4647 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4651 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4653 debug_target
.to_terminal_ours_for_output (&debug_target
);
4655 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4659 debug_to_terminal_ours (struct target_ops
*self
)
4661 debug_target
.to_terminal_ours (&debug_target
);
4663 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4667 debug_to_terminal_save_ours (struct target_ops
*self
)
4669 debug_target
.to_terminal_save_ours (&debug_target
);
4671 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4675 debug_to_terminal_info (struct target_ops
*self
,
4676 const char *arg
, int from_tty
)
4678 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4680 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4685 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4687 debug_target
.to_load (&debug_target
, args
, from_tty
);
4689 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4693 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4695 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4697 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4698 ptid_get_pid (ptid
));
4702 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4706 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4708 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4715 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4719 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4721 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4728 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4732 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4734 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4741 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4745 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4747 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4754 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4758 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4760 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4767 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4771 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4773 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4780 debug_to_has_exited (struct target_ops
*self
,
4781 int pid
, int wait_status
, int *exit_status
)
4785 has_exited
= debug_target
.to_has_exited (&debug_target
,
4786 pid
, wait_status
, exit_status
);
4788 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4789 pid
, wait_status
, *exit_status
, has_exited
);
4795 debug_to_can_run (struct target_ops
*self
)
4799 retval
= debug_target
.to_can_run (&debug_target
);
4801 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4806 static struct gdbarch
*
4807 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4809 struct gdbarch
*retval
;
4811 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4813 fprintf_unfiltered (gdb_stdlog
,
4814 "target_thread_architecture (%s) = %s [%s]\n",
4815 target_pid_to_str (ptid
),
4816 host_address_to_string (retval
),
4817 gdbarch_bfd_arch_info (retval
)->printable_name
);
4822 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4824 debug_target
.to_stop (&debug_target
, ptid
);
4826 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4827 target_pid_to_str (ptid
));
4831 debug_to_rcmd (struct target_ops
*self
, char *command
,
4832 struct ui_file
*outbuf
)
4834 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4835 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4839 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4843 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4845 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4852 setup_target_debug (void)
4854 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4856 current_target
.to_open
= debug_to_open
;
4857 current_target
.to_post_attach
= debug_to_post_attach
;
4858 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4859 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4860 current_target
.to_files_info
= debug_to_files_info
;
4861 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4862 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4863 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4864 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4865 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4866 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4867 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4868 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4869 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4870 current_target
.to_watchpoint_addr_within_range
4871 = debug_to_watchpoint_addr_within_range
;
4872 current_target
.to_region_ok_for_hw_watchpoint
4873 = debug_to_region_ok_for_hw_watchpoint
;
4874 current_target
.to_can_accel_watchpoint_condition
4875 = debug_to_can_accel_watchpoint_condition
;
4876 current_target
.to_terminal_init
= debug_to_terminal_init
;
4877 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4878 current_target
.to_terminal_ours_for_output
4879 = debug_to_terminal_ours_for_output
;
4880 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4881 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4882 current_target
.to_terminal_info
= debug_to_terminal_info
;
4883 current_target
.to_load
= debug_to_load
;
4884 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4885 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4886 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4887 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4888 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4889 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4890 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4891 current_target
.to_has_exited
= debug_to_has_exited
;
4892 current_target
.to_can_run
= debug_to_can_run
;
4893 current_target
.to_stop
= debug_to_stop
;
4894 current_target
.to_rcmd
= debug_to_rcmd
;
4895 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4896 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4900 static char targ_desc
[] =
4901 "Names of targets and files being debugged.\nShows the entire \
4902 stack of targets currently in use (including the exec-file,\n\
4903 core-file, and process, if any), as well as the symbol file name.";
4906 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4908 error (_("\"monitor\" command not supported by this target."));
4912 do_monitor_command (char *cmd
,
4915 target_rcmd (cmd
, gdb_stdtarg
);
4918 /* Print the name of each layers of our target stack. */
4921 maintenance_print_target_stack (char *cmd
, int from_tty
)
4923 struct target_ops
*t
;
4925 printf_filtered (_("The current target stack is:\n"));
4927 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4929 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4933 /* Controls if async mode is permitted. */
4934 int target_async_permitted
= 0;
4936 /* The set command writes to this variable. If the inferior is
4937 executing, target_async_permitted is *not* updated. */
4938 static int target_async_permitted_1
= 0;
4941 set_target_async_command (char *args
, int from_tty
,
4942 struct cmd_list_element
*c
)
4944 if (have_live_inferiors ())
4946 target_async_permitted_1
= target_async_permitted
;
4947 error (_("Cannot change this setting while the inferior is running."));
4950 target_async_permitted
= target_async_permitted_1
;
4954 show_target_async_command (struct ui_file
*file
, int from_tty
,
4955 struct cmd_list_element
*c
,
4958 fprintf_filtered (file
,
4959 _("Controlling the inferior in "
4960 "asynchronous mode is %s.\n"), value
);
4963 /* Temporary copies of permission settings. */
4965 static int may_write_registers_1
= 1;
4966 static int may_write_memory_1
= 1;
4967 static int may_insert_breakpoints_1
= 1;
4968 static int may_insert_tracepoints_1
= 1;
4969 static int may_insert_fast_tracepoints_1
= 1;
4970 static int may_stop_1
= 1;
4972 /* Make the user-set values match the real values again. */
4975 update_target_permissions (void)
4977 may_write_registers_1
= may_write_registers
;
4978 may_write_memory_1
= may_write_memory
;
4979 may_insert_breakpoints_1
= may_insert_breakpoints
;
4980 may_insert_tracepoints_1
= may_insert_tracepoints
;
4981 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4982 may_stop_1
= may_stop
;
4985 /* The one function handles (most of) the permission flags in the same
4989 set_target_permissions (char *args
, int from_tty
,
4990 struct cmd_list_element
*c
)
4992 if (target_has_execution
)
4994 update_target_permissions ();
4995 error (_("Cannot change this setting while the inferior is running."));
4998 /* Make the real values match the user-changed values. */
4999 may_write_registers
= may_write_registers_1
;
5000 may_insert_breakpoints
= may_insert_breakpoints_1
;
5001 may_insert_tracepoints
= may_insert_tracepoints_1
;
5002 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
5003 may_stop
= may_stop_1
;
5004 update_observer_mode ();
5007 /* Set memory write permission independently of observer mode. */
5010 set_write_memory_permission (char *args
, int from_tty
,
5011 struct cmd_list_element
*c
)
5013 /* Make the real values match the user-changed values. */
5014 may_write_memory
= may_write_memory_1
;
5015 update_observer_mode ();
5020 initialize_targets (void)
5022 init_dummy_target ();
5023 push_target (&dummy_target
);
5025 add_info ("target", target_info
, targ_desc
);
5026 add_info ("files", target_info
, targ_desc
);
5028 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
5029 Set target debugging."), _("\
5030 Show target debugging."), _("\
5031 When non-zero, target debugging is enabled. Higher numbers are more\n\
5032 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
5036 &setdebuglist
, &showdebuglist
);
5038 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
5039 &trust_readonly
, _("\
5040 Set mode for reading from readonly sections."), _("\
5041 Show mode for reading from readonly sections."), _("\
5042 When this mode is on, memory reads from readonly sections (such as .text)\n\
5043 will be read from the object file instead of from the target. This will\n\
5044 result in significant performance improvement for remote targets."),
5046 show_trust_readonly
,
5047 &setlist
, &showlist
);
5049 add_com ("monitor", class_obscure
, do_monitor_command
,
5050 _("Send a command to the remote monitor (remote targets only)."));
5052 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5053 _("Print the name of each layer of the internal target stack."),
5054 &maintenanceprintlist
);
5056 add_setshow_boolean_cmd ("target-async", no_class
,
5057 &target_async_permitted_1
, _("\
5058 Set whether gdb controls the inferior in asynchronous mode."), _("\
5059 Show whether gdb controls the inferior in asynchronous mode."), _("\
5060 Tells gdb whether to control the inferior in asynchronous mode."),
5061 set_target_async_command
,
5062 show_target_async_command
,
5066 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5067 &may_write_registers_1
, _("\
5068 Set permission to write into registers."), _("\
5069 Show permission to write into registers."), _("\
5070 When this permission is on, GDB may write into the target's registers.\n\
5071 Otherwise, any sort of write attempt will result in an error."),
5072 set_target_permissions
, NULL
,
5073 &setlist
, &showlist
);
5075 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5076 &may_write_memory_1
, _("\
5077 Set permission to write into target memory."), _("\
5078 Show permission to write into target memory."), _("\
5079 When this permission is on, GDB may write into the target's memory.\n\
5080 Otherwise, any sort of write attempt will result in an error."),
5081 set_write_memory_permission
, NULL
,
5082 &setlist
, &showlist
);
5084 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5085 &may_insert_breakpoints_1
, _("\
5086 Set permission to insert breakpoints in the target."), _("\
5087 Show permission to insert breakpoints in the target."), _("\
5088 When this permission is on, GDB may insert breakpoints in the program.\n\
5089 Otherwise, any sort of insertion attempt will result in an error."),
5090 set_target_permissions
, NULL
,
5091 &setlist
, &showlist
);
5093 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5094 &may_insert_tracepoints_1
, _("\
5095 Set permission to insert tracepoints in the target."), _("\
5096 Show permission to insert tracepoints in the target."), _("\
5097 When this permission is on, GDB may insert tracepoints in the program.\n\
5098 Otherwise, any sort of insertion attempt will result in an error."),
5099 set_target_permissions
, NULL
,
5100 &setlist
, &showlist
);
5102 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5103 &may_insert_fast_tracepoints_1
, _("\
5104 Set permission to insert fast tracepoints in the target."), _("\
5105 Show permission to insert fast tracepoints in the target."), _("\
5106 When this permission is on, GDB may insert fast tracepoints.\n\
5107 Otherwise, any sort of insertion attempt will result in an error."),
5108 set_target_permissions
, NULL
,
5109 &setlist
, &showlist
);
5111 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5113 Set permission to interrupt or signal the target."), _("\
5114 Show permission to interrupt or signal the target."), _("\
5115 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5116 Otherwise, any attempt to interrupt or stop will be ignored."),
5117 set_target_permissions
, NULL
,
5118 &setlist
, &showlist
);