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 /* Do not inherit to_trace_start. */
699 /* Do not inherit to_get_trace_status. */
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_get_tracepoint_status
,
756 (void (*) (struct target_ops
*, struct breakpoint
*,
757 struct uploaded_tp
*))
759 de_fault (to_trace_stop
,
760 (void (*) (struct target_ops
*))
762 de_fault (to_trace_find
,
763 (int (*) (struct target_ops
*,
764 enum trace_find_type
, int, CORE_ADDR
, CORE_ADDR
, int *))
766 de_fault (to_get_trace_state_variable_value
,
767 (int (*) (struct target_ops
*, int, LONGEST
*))
769 de_fault (to_save_trace_data
,
770 (int (*) (struct target_ops
*, const char *))
772 de_fault (to_upload_tracepoints
,
773 (int (*) (struct target_ops
*, struct uploaded_tp
**))
775 de_fault (to_upload_trace_state_variables
,
776 (int (*) (struct target_ops
*, struct uploaded_tsv
**))
778 de_fault (to_get_raw_trace_data
,
779 (LONGEST (*) (struct target_ops
*, gdb_byte
*, ULONGEST
, LONGEST
))
781 de_fault (to_get_min_fast_tracepoint_insn_len
,
782 (int (*) (struct target_ops
*))
784 de_fault (to_set_disconnected_tracing
,
785 (void (*) (struct target_ops
*, int))
787 de_fault (to_set_circular_trace_buffer
,
788 (void (*) (struct target_ops
*, int))
790 de_fault (to_set_trace_buffer_size
,
791 (void (*) (struct target_ops
*, LONGEST
))
793 de_fault (to_set_trace_notes
,
794 (int (*) (struct target_ops
*,
795 const char *, const char *, const char *))
797 de_fault (to_get_tib_address
,
798 (int (*) (struct target_ops
*, ptid_t
, CORE_ADDR
*))
800 de_fault (to_set_permissions
,
801 (void (*) (struct target_ops
*))
803 de_fault (to_static_tracepoint_marker_at
,
804 (int (*) (struct target_ops
*,
805 CORE_ADDR
, struct static_tracepoint_marker
*))
807 de_fault (to_static_tracepoint_markers_by_strid
,
808 (VEC(static_tracepoint_marker_p
) * (*) (struct target_ops
*,
811 de_fault (to_traceframe_info
,
812 (struct traceframe_info
* (*) (struct target_ops
*))
814 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
815 (int (*) (struct target_ops
*))
817 de_fault (to_can_run_breakpoint_commands
,
818 (int (*) (struct target_ops
*))
820 de_fault (to_use_agent
,
821 (int (*) (struct target_ops
*, int))
823 de_fault (to_can_use_agent
,
824 (int (*) (struct target_ops
*))
826 de_fault (to_augmented_libraries_svr4_read
,
827 (int (*) (struct target_ops
*))
832 /* Finally, position the target-stack beneath the squashed
833 "current_target". That way code looking for a non-inherited
834 target method can quickly and simply find it. */
835 current_target
.beneath
= target_stack
;
838 setup_target_debug ();
841 /* Push a new target type into the stack of the existing target accessors,
842 possibly superseding some of the existing accessors.
844 Rather than allow an empty stack, we always have the dummy target at
845 the bottom stratum, so we can call the function vectors without
849 push_target (struct target_ops
*t
)
851 struct target_ops
**cur
;
853 /* Check magic number. If wrong, it probably means someone changed
854 the struct definition, but not all the places that initialize one. */
855 if (t
->to_magic
!= OPS_MAGIC
)
857 fprintf_unfiltered (gdb_stderr
,
858 "Magic number of %s target struct wrong\n",
860 internal_error (__FILE__
, __LINE__
,
861 _("failed internal consistency check"));
864 /* Find the proper stratum to install this target in. */
865 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
867 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
871 /* If there's already targets at this stratum, remove them. */
872 /* FIXME: cagney/2003-10-15: I think this should be popping all
873 targets to CUR, and not just those at this stratum level. */
874 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
876 /* There's already something at this stratum level. Close it,
877 and un-hook it from the stack. */
878 struct target_ops
*tmp
= (*cur
);
880 (*cur
) = (*cur
)->beneath
;
885 /* We have removed all targets in our stratum, now add the new one. */
889 update_current_target ();
892 /* Remove a target_ops vector from the stack, wherever it may be.
893 Return how many times it was removed (0 or 1). */
896 unpush_target (struct target_ops
*t
)
898 struct target_ops
**cur
;
899 struct target_ops
*tmp
;
901 if (t
->to_stratum
== dummy_stratum
)
902 internal_error (__FILE__
, __LINE__
,
903 _("Attempt to unpush the dummy target"));
905 /* Look for the specified target. Note that we assume that a target
906 can only occur once in the target stack. */
908 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
914 /* If we don't find target_ops, quit. Only open targets should be
919 /* Unchain the target. */
921 (*cur
) = (*cur
)->beneath
;
924 update_current_target ();
926 /* Finally close the target. Note we do this after unchaining, so
927 any target method calls from within the target_close
928 implementation don't end up in T anymore. */
935 pop_all_targets_above (enum strata above_stratum
)
937 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
939 if (!unpush_target (target_stack
))
941 fprintf_unfiltered (gdb_stderr
,
942 "pop_all_targets couldn't find target %s\n",
943 target_stack
->to_shortname
);
944 internal_error (__FILE__
, __LINE__
,
945 _("failed internal consistency check"));
952 pop_all_targets (void)
954 pop_all_targets_above (dummy_stratum
);
957 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
960 target_is_pushed (struct target_ops
*t
)
962 struct target_ops
**cur
;
964 /* Check magic number. If wrong, it probably means someone changed
965 the struct definition, but not all the places that initialize one. */
966 if (t
->to_magic
!= OPS_MAGIC
)
968 fprintf_unfiltered (gdb_stderr
,
969 "Magic number of %s target struct wrong\n",
971 internal_error (__FILE__
, __LINE__
,
972 _("failed internal consistency check"));
975 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
982 /* Using the objfile specified in OBJFILE, find the address for the
983 current thread's thread-local storage with offset OFFSET. */
985 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
987 volatile CORE_ADDR addr
= 0;
988 struct target_ops
*target
;
990 for (target
= current_target
.beneath
;
992 target
= target
->beneath
)
994 if (target
->to_get_thread_local_address
!= NULL
)
999 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
1001 ptid_t ptid
= inferior_ptid
;
1002 volatile struct gdb_exception ex
;
1004 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1008 /* Fetch the load module address for this objfile. */
1009 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1011 /* If it's 0, throw the appropriate exception. */
1013 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1014 _("TLS load module not found"));
1016 addr
= target
->to_get_thread_local_address (target
, ptid
,
1019 /* If an error occurred, print TLS related messages here. Otherwise,
1020 throw the error to some higher catcher. */
1023 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1027 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1028 error (_("Cannot find thread-local variables "
1029 "in this thread library."));
1031 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1032 if (objfile_is_library
)
1033 error (_("Cannot find shared library `%s' in dynamic"
1034 " linker's load module list"), objfile_name (objfile
));
1036 error (_("Cannot find executable file `%s' in dynamic"
1037 " linker's load module list"), objfile_name (objfile
));
1039 case TLS_NOT_ALLOCATED_YET_ERROR
:
1040 if (objfile_is_library
)
1041 error (_("The inferior has not yet allocated storage for"
1042 " thread-local variables in\n"
1043 "the shared library `%s'\n"
1045 objfile_name (objfile
), target_pid_to_str (ptid
));
1047 error (_("The inferior has not yet allocated storage for"
1048 " thread-local variables in\n"
1049 "the executable `%s'\n"
1051 objfile_name (objfile
), target_pid_to_str (ptid
));
1053 case TLS_GENERIC_ERROR
:
1054 if (objfile_is_library
)
1055 error (_("Cannot find thread-local storage for %s, "
1056 "shared library %s:\n%s"),
1057 target_pid_to_str (ptid
),
1058 objfile_name (objfile
), ex
.message
);
1060 error (_("Cannot find thread-local storage for %s, "
1061 "executable file %s:\n%s"),
1062 target_pid_to_str (ptid
),
1063 objfile_name (objfile
), ex
.message
);
1066 throw_exception (ex
);
1071 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1072 TLS is an ABI-specific thing. But we don't do that yet. */
1074 error (_("Cannot find thread-local variables on this target"));
1080 target_xfer_status_to_string (enum target_xfer_status err
)
1082 #define CASE(X) case X: return #X
1085 CASE(TARGET_XFER_E_IO
);
1086 CASE(TARGET_XFER_E_UNAVAILABLE
);
1095 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1097 /* target_read_string -- read a null terminated string, up to LEN bytes,
1098 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1099 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1100 is responsible for freeing it. Return the number of bytes successfully
1104 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1106 int tlen
, offset
, i
;
1110 int buffer_allocated
;
1112 unsigned int nbytes_read
= 0;
1114 gdb_assert (string
);
1116 /* Small for testing. */
1117 buffer_allocated
= 4;
1118 buffer
= xmalloc (buffer_allocated
);
1123 tlen
= MIN (len
, 4 - (memaddr
& 3));
1124 offset
= memaddr
& 3;
1126 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1129 /* The transfer request might have crossed the boundary to an
1130 unallocated region of memory. Retry the transfer, requesting
1134 errcode
= target_read_memory (memaddr
, buf
, 1);
1139 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1143 bytes
= bufptr
- buffer
;
1144 buffer_allocated
*= 2;
1145 buffer
= xrealloc (buffer
, buffer_allocated
);
1146 bufptr
= buffer
+ bytes
;
1149 for (i
= 0; i
< tlen
; i
++)
1151 *bufptr
++ = buf
[i
+ offset
];
1152 if (buf
[i
+ offset
] == '\000')
1154 nbytes_read
+= i
+ 1;
1161 nbytes_read
+= tlen
;
1170 struct target_section_table
*
1171 target_get_section_table (struct target_ops
*target
)
1173 struct target_ops
*t
;
1176 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1178 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1179 if (t
->to_get_section_table
!= NULL
)
1180 return (*t
->to_get_section_table
) (t
);
1185 /* Find a section containing ADDR. */
1187 struct target_section
*
1188 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1190 struct target_section_table
*table
= target_get_section_table (target
);
1191 struct target_section
*secp
;
1196 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1198 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1204 /* Read memory from the live target, even if currently inspecting a
1205 traceframe. The return is the same as that of target_read. */
1207 static enum target_xfer_status
1208 target_read_live_memory (enum target_object object
,
1209 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1210 ULONGEST
*xfered_len
)
1212 enum target_xfer_status ret
;
1213 struct cleanup
*cleanup
;
1215 /* Switch momentarily out of tfind mode so to access live memory.
1216 Note that this must not clear global state, such as the frame
1217 cache, which must still remain valid for the previous traceframe.
1218 We may be _building_ the frame cache at this point. */
1219 cleanup
= make_cleanup_restore_traceframe_number ();
1220 set_traceframe_number (-1);
1222 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1223 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1225 do_cleanups (cleanup
);
1229 /* Using the set of read-only target sections of OPS, read live
1230 read-only memory. Note that the actual reads start from the
1231 top-most target again.
1233 For interface/parameters/return description see target.h,
1236 static enum target_xfer_status
1237 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1238 enum target_object object
,
1239 gdb_byte
*readbuf
, ULONGEST memaddr
,
1240 ULONGEST len
, ULONGEST
*xfered_len
)
1242 struct target_section
*secp
;
1243 struct target_section_table
*table
;
1245 secp
= target_section_by_addr (ops
, memaddr
);
1247 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1248 secp
->the_bfd_section
)
1251 struct target_section
*p
;
1252 ULONGEST memend
= memaddr
+ len
;
1254 table
= target_get_section_table (ops
);
1256 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1258 if (memaddr
>= p
->addr
)
1260 if (memend
<= p
->endaddr
)
1262 /* Entire transfer is within this section. */
1263 return target_read_live_memory (object
, memaddr
,
1264 readbuf
, len
, xfered_len
);
1266 else if (memaddr
>= p
->endaddr
)
1268 /* This section ends before the transfer starts. */
1273 /* This section overlaps the transfer. Just do half. */
1274 len
= p
->endaddr
- memaddr
;
1275 return target_read_live_memory (object
, memaddr
,
1276 readbuf
, len
, xfered_len
);
1282 return TARGET_XFER_EOF
;
1285 /* Read memory from more than one valid target. A core file, for
1286 instance, could have some of memory but delegate other bits to
1287 the target below it. So, we must manually try all targets. */
1289 static enum target_xfer_status
1290 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1291 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1292 ULONGEST
*xfered_len
)
1294 enum target_xfer_status res
;
1298 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1299 readbuf
, writebuf
, memaddr
, len
,
1301 if (res
== TARGET_XFER_OK
)
1304 /* Stop if the target reports that the memory is not available. */
1305 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1308 /* We want to continue past core files to executables, but not
1309 past a running target's memory. */
1310 if (ops
->to_has_all_memory (ops
))
1315 while (ops
!= NULL
);
1320 /* Perform a partial memory transfer.
1321 For docs see target.h, to_xfer_partial. */
1323 static enum target_xfer_status
1324 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1325 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1326 ULONGEST len
, ULONGEST
*xfered_len
)
1328 enum target_xfer_status res
;
1330 struct mem_region
*region
;
1331 struct inferior
*inf
;
1333 /* For accesses to unmapped overlay sections, read directly from
1334 files. Must do this first, as MEMADDR may need adjustment. */
1335 if (readbuf
!= NULL
&& overlay_debugging
)
1337 struct obj_section
*section
= find_pc_overlay (memaddr
);
1339 if (pc_in_unmapped_range (memaddr
, section
))
1341 struct target_section_table
*table
1342 = target_get_section_table (ops
);
1343 const char *section_name
= section
->the_bfd_section
->name
;
1345 memaddr
= overlay_mapped_address (memaddr
, section
);
1346 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1347 memaddr
, len
, xfered_len
,
1349 table
->sections_end
,
1354 /* Try the executable files, if "trust-readonly-sections" is set. */
1355 if (readbuf
!= NULL
&& trust_readonly
)
1357 struct target_section
*secp
;
1358 struct target_section_table
*table
;
1360 secp
= target_section_by_addr (ops
, memaddr
);
1362 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1363 secp
->the_bfd_section
)
1366 table
= target_get_section_table (ops
);
1367 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1368 memaddr
, len
, xfered_len
,
1370 table
->sections_end
,
1375 /* If reading unavailable memory in the context of traceframes, and
1376 this address falls within a read-only section, fallback to
1377 reading from live memory. */
1378 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1380 VEC(mem_range_s
) *available
;
1382 /* If we fail to get the set of available memory, then the
1383 target does not support querying traceframe info, and so we
1384 attempt reading from the traceframe anyway (assuming the
1385 target implements the old QTro packet then). */
1386 if (traceframe_available_memory (&available
, memaddr
, len
))
1388 struct cleanup
*old_chain
;
1390 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1392 if (VEC_empty (mem_range_s
, available
)
1393 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1395 /* Don't read into the traceframe's available
1397 if (!VEC_empty (mem_range_s
, available
))
1399 LONGEST oldlen
= len
;
1401 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1402 gdb_assert (len
<= oldlen
);
1405 do_cleanups (old_chain
);
1407 /* This goes through the topmost target again. */
1408 res
= memory_xfer_live_readonly_partial (ops
, object
,
1411 if (res
== TARGET_XFER_OK
)
1412 return TARGET_XFER_OK
;
1415 /* No use trying further, we know some memory starting
1416 at MEMADDR isn't available. */
1418 return TARGET_XFER_E_UNAVAILABLE
;
1422 /* Don't try to read more than how much is available, in
1423 case the target implements the deprecated QTro packet to
1424 cater for older GDBs (the target's knowledge of read-only
1425 sections may be outdated by now). */
1426 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1428 do_cleanups (old_chain
);
1432 /* Try GDB's internal data cache. */
1433 region
= lookup_mem_region (memaddr
);
1434 /* region->hi == 0 means there's no upper bound. */
1435 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1438 reg_len
= region
->hi
- memaddr
;
1440 switch (region
->attrib
.mode
)
1443 if (writebuf
!= NULL
)
1444 return TARGET_XFER_E_IO
;
1448 if (readbuf
!= NULL
)
1449 return TARGET_XFER_E_IO
;
1453 /* We only support writing to flash during "load" for now. */
1454 if (writebuf
!= NULL
)
1455 error (_("Writing to flash memory forbidden in this context"));
1459 return TARGET_XFER_E_IO
;
1462 if (!ptid_equal (inferior_ptid
, null_ptid
))
1463 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1468 /* The dcache reads whole cache lines; that doesn't play well
1469 with reading from a trace buffer, because reading outside of
1470 the collected memory range fails. */
1471 && get_traceframe_number () == -1
1472 && (region
->attrib
.cache
1473 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1474 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1476 DCACHE
*dcache
= target_dcache_get_or_init ();
1479 if (readbuf
!= NULL
)
1480 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1482 /* FIXME drow/2006-08-09: If we're going to preserve const
1483 correctness dcache_xfer_memory should take readbuf and
1485 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1488 return TARGET_XFER_E_IO
;
1491 *xfered_len
= (ULONGEST
) l
;
1492 return TARGET_XFER_OK
;
1496 /* If none of those methods found the memory we wanted, fall back
1497 to a target partial transfer. Normally a single call to
1498 to_xfer_partial is enough; if it doesn't recognize an object
1499 it will call the to_xfer_partial of the next target down.
1500 But for memory this won't do. Memory is the only target
1501 object which can be read from more than one valid target.
1502 A core file, for instance, could have some of memory but
1503 delegate other bits to the target below it. So, we must
1504 manually try all targets. */
1506 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1509 /* Make sure the cache gets updated no matter what - if we are writing
1510 to the stack. Even if this write is not tagged as such, we still need
1511 to update the cache. */
1513 if (res
== TARGET_XFER_OK
1516 && target_dcache_init_p ()
1517 && !region
->attrib
.cache
1518 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1519 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1521 DCACHE
*dcache
= target_dcache_get ();
1523 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1526 /* If we still haven't got anything, return the last error. We
1531 /* Perform a partial memory transfer. For docs see target.h,
1534 static enum target_xfer_status
1535 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1536 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1537 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1539 enum target_xfer_status res
;
1541 /* Zero length requests are ok and require no work. */
1543 return TARGET_XFER_EOF
;
1545 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1546 breakpoint insns, thus hiding out from higher layers whether
1547 there are software breakpoints inserted in the code stream. */
1548 if (readbuf
!= NULL
)
1550 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1553 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1554 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1559 struct cleanup
*old_chain
;
1561 /* A large write request is likely to be partially satisfied
1562 by memory_xfer_partial_1. We will continually malloc
1563 and free a copy of the entire write request for breakpoint
1564 shadow handling even though we only end up writing a small
1565 subset of it. Cap writes to 4KB to mitigate this. */
1566 len
= min (4096, len
);
1568 buf
= xmalloc (len
);
1569 old_chain
= make_cleanup (xfree
, buf
);
1570 memcpy (buf
, writebuf
, len
);
1572 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1573 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1576 do_cleanups (old_chain
);
1583 restore_show_memory_breakpoints (void *arg
)
1585 show_memory_breakpoints
= (uintptr_t) arg
;
1589 make_show_memory_breakpoints_cleanup (int show
)
1591 int current
= show_memory_breakpoints
;
1593 show_memory_breakpoints
= show
;
1594 return make_cleanup (restore_show_memory_breakpoints
,
1595 (void *) (uintptr_t) current
);
1598 /* For docs see target.h, to_xfer_partial. */
1600 enum target_xfer_status
1601 target_xfer_partial (struct target_ops
*ops
,
1602 enum target_object object
, const char *annex
,
1603 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1604 ULONGEST offset
, ULONGEST len
,
1605 ULONGEST
*xfered_len
)
1607 enum target_xfer_status retval
;
1609 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1611 /* Transfer is done when LEN is zero. */
1613 return TARGET_XFER_EOF
;
1615 if (writebuf
&& !may_write_memory
)
1616 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1617 core_addr_to_string_nz (offset
), plongest (len
));
1621 /* If this is a memory transfer, let the memory-specific code
1622 have a look at it instead. Memory transfers are more
1624 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1625 || object
== TARGET_OBJECT_CODE_MEMORY
)
1626 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1627 writebuf
, offset
, len
, xfered_len
);
1628 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1630 /* Request the normal memory object from other layers. */
1631 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1635 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1636 writebuf
, offset
, len
, xfered_len
);
1640 const unsigned char *myaddr
= NULL
;
1642 fprintf_unfiltered (gdb_stdlog
,
1643 "%s:target_xfer_partial "
1644 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1647 (annex
? annex
: "(null)"),
1648 host_address_to_string (readbuf
),
1649 host_address_to_string (writebuf
),
1650 core_addr_to_string_nz (offset
),
1651 pulongest (len
), retval
,
1652 pulongest (*xfered_len
));
1658 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1662 fputs_unfiltered (", bytes =", gdb_stdlog
);
1663 for (i
= 0; i
< *xfered_len
; i
++)
1665 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1667 if (targetdebug
< 2 && i
> 0)
1669 fprintf_unfiltered (gdb_stdlog
, " ...");
1672 fprintf_unfiltered (gdb_stdlog
, "\n");
1675 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1679 fputc_unfiltered ('\n', gdb_stdlog
);
1682 /* Check implementations of to_xfer_partial update *XFERED_LEN
1683 properly. Do assertion after printing debug messages, so that we
1684 can find more clues on assertion failure from debugging messages. */
1685 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1686 gdb_assert (*xfered_len
> 0);
1691 /* Read LEN bytes of target memory at address MEMADDR, placing the
1692 results in GDB's memory at MYADDR. Returns either 0 for success or
1693 TARGET_XFER_E_IO if any error occurs.
1695 If an error occurs, no guarantee is made about the contents of the data at
1696 MYADDR. In particular, the caller should not depend upon partial reads
1697 filling the buffer with good data. There is no way for the caller to know
1698 how much good data might have been transfered anyway. Callers that can
1699 deal with partial reads should call target_read (which will retry until
1700 it makes no progress, and then return how much was transferred). */
1703 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1705 /* Dispatch to the topmost target, not the flattened current_target.
1706 Memory accesses check target->to_has_(all_)memory, and the
1707 flattened target doesn't inherit those. */
1708 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1709 myaddr
, memaddr
, len
) == len
)
1712 return TARGET_XFER_E_IO
;
1715 /* Like target_read_memory, but specify explicitly that this is a read
1716 from the target's raw memory. That is, this read bypasses the
1717 dcache, breakpoint shadowing, etc. */
1720 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1722 /* See comment in target_read_memory about why the request starts at
1723 current_target.beneath. */
1724 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1725 myaddr
, memaddr
, len
) == len
)
1728 return TARGET_XFER_E_IO
;
1731 /* Like target_read_memory, but specify explicitly that this is a read from
1732 the target's stack. This may trigger different cache behavior. */
1735 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1737 /* See comment in target_read_memory about why the request starts at
1738 current_target.beneath. */
1739 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1740 myaddr
, memaddr
, len
) == len
)
1743 return TARGET_XFER_E_IO
;
1746 /* Like target_read_memory, but specify explicitly that this is a read from
1747 the target's code. This may trigger different cache behavior. */
1750 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1752 /* See comment in target_read_memory about why the request starts at
1753 current_target.beneath. */
1754 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1755 myaddr
, memaddr
, len
) == len
)
1758 return TARGET_XFER_E_IO
;
1761 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1762 Returns either 0 for success or TARGET_XFER_E_IO if any
1763 error occurs. If an error occurs, no guarantee is made about how
1764 much data got written. Callers that can deal with partial writes
1765 should call target_write. */
1768 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1770 /* See comment in target_read_memory about why the request starts at
1771 current_target.beneath. */
1772 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1773 myaddr
, memaddr
, len
) == len
)
1776 return TARGET_XFER_E_IO
;
1779 /* Write LEN bytes from MYADDR to target raw memory at address
1780 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1781 if any error occurs. If an error occurs, no guarantee is made
1782 about how much data got written. Callers that can deal with
1783 partial writes should call target_write. */
1786 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1788 /* See comment in target_read_memory about why the request starts at
1789 current_target.beneath. */
1790 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1791 myaddr
, memaddr
, len
) == len
)
1794 return TARGET_XFER_E_IO
;
1797 /* Fetch the target's memory map. */
1800 target_memory_map (void)
1802 VEC(mem_region_s
) *result
;
1803 struct mem_region
*last_one
, *this_one
;
1805 struct target_ops
*t
;
1808 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1810 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1811 if (t
->to_memory_map
!= NULL
)
1817 result
= t
->to_memory_map (t
);
1821 qsort (VEC_address (mem_region_s
, result
),
1822 VEC_length (mem_region_s
, result
),
1823 sizeof (struct mem_region
), mem_region_cmp
);
1825 /* Check that regions do not overlap. Simultaneously assign
1826 a numbering for the "mem" commands to use to refer to
1829 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1831 this_one
->number
= ix
;
1833 if (last_one
&& last_one
->hi
> this_one
->lo
)
1835 warning (_("Overlapping regions in memory map: ignoring"));
1836 VEC_free (mem_region_s
, result
);
1839 last_one
= this_one
;
1846 target_flash_erase (ULONGEST address
, LONGEST length
)
1848 struct target_ops
*t
;
1850 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1851 if (t
->to_flash_erase
!= NULL
)
1854 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1855 hex_string (address
), phex (length
, 0));
1856 t
->to_flash_erase (t
, address
, length
);
1864 target_flash_done (void)
1866 struct target_ops
*t
;
1868 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1869 if (t
->to_flash_done
!= NULL
)
1872 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1873 t
->to_flash_done (t
);
1881 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1882 struct cmd_list_element
*c
, const char *value
)
1884 fprintf_filtered (file
,
1885 _("Mode for reading from readonly sections is %s.\n"),
1889 /* More generic transfers. */
1891 static enum target_xfer_status
1892 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1893 const char *annex
, gdb_byte
*readbuf
,
1894 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1895 ULONGEST
*xfered_len
)
1897 if (object
== TARGET_OBJECT_MEMORY
1898 && ops
->deprecated_xfer_memory
!= NULL
)
1899 /* If available, fall back to the target's
1900 "deprecated_xfer_memory" method. */
1905 if (writebuf
!= NULL
)
1907 void *buffer
= xmalloc (len
);
1908 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1910 memcpy (buffer
, writebuf
, len
);
1911 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1912 1/*write*/, NULL
, ops
);
1913 do_cleanups (cleanup
);
1915 if (readbuf
!= NULL
)
1916 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1917 0/*read*/, NULL
, ops
);
1920 *xfered_len
= (ULONGEST
) xfered
;
1921 return TARGET_XFER_E_IO
;
1923 else if (xfered
== 0 && errno
== 0)
1924 /* "deprecated_xfer_memory" uses 0, cross checked against
1925 ERRNO as one indication of an error. */
1926 return TARGET_XFER_EOF
;
1928 return TARGET_XFER_E_IO
;
1932 gdb_assert (ops
->beneath
!= NULL
);
1933 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1934 readbuf
, writebuf
, offset
, len
,
1939 /* Target vector read/write partial wrapper functions. */
1941 static enum target_xfer_status
1942 target_read_partial (struct target_ops
*ops
,
1943 enum target_object object
,
1944 const char *annex
, gdb_byte
*buf
,
1945 ULONGEST offset
, ULONGEST len
,
1946 ULONGEST
*xfered_len
)
1948 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
1952 static enum target_xfer_status
1953 target_write_partial (struct target_ops
*ops
,
1954 enum target_object object
,
1955 const char *annex
, const gdb_byte
*buf
,
1956 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
1958 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
1962 /* Wrappers to perform the full transfer. */
1964 /* For docs on target_read see target.h. */
1967 target_read (struct target_ops
*ops
,
1968 enum target_object object
,
1969 const char *annex
, gdb_byte
*buf
,
1970 ULONGEST offset
, LONGEST len
)
1974 while (xfered
< len
)
1976 ULONGEST xfered_len
;
1977 enum target_xfer_status status
;
1979 status
= target_read_partial (ops
, object
, annex
,
1980 (gdb_byte
*) buf
+ xfered
,
1981 offset
+ xfered
, len
- xfered
,
1984 /* Call an observer, notifying them of the xfer progress? */
1985 if (status
== TARGET_XFER_EOF
)
1987 else if (status
== TARGET_XFER_OK
)
1989 xfered
+= xfered_len
;
1999 /* Assuming that the entire [begin, end) range of memory cannot be
2000 read, try to read whatever subrange is possible to read.
2002 The function returns, in RESULT, either zero or one memory block.
2003 If there's a readable subrange at the beginning, it is completely
2004 read and returned. Any further readable subrange will not be read.
2005 Otherwise, if there's a readable subrange at the end, it will be
2006 completely read and returned. Any readable subranges before it
2007 (obviously, not starting at the beginning), will be ignored. In
2008 other cases -- either no readable subrange, or readable subrange(s)
2009 that is neither at the beginning, or end, nothing is returned.
2011 The purpose of this function is to handle a read across a boundary
2012 of accessible memory in a case when memory map is not available.
2013 The above restrictions are fine for this case, but will give
2014 incorrect results if the memory is 'patchy'. However, supporting
2015 'patchy' memory would require trying to read every single byte,
2016 and it seems unacceptable solution. Explicit memory map is
2017 recommended for this case -- and target_read_memory_robust will
2018 take care of reading multiple ranges then. */
2021 read_whatever_is_readable (struct target_ops
*ops
,
2022 ULONGEST begin
, ULONGEST end
,
2023 VEC(memory_read_result_s
) **result
)
2025 gdb_byte
*buf
= xmalloc (end
- begin
);
2026 ULONGEST current_begin
= begin
;
2027 ULONGEST current_end
= end
;
2029 memory_read_result_s r
;
2030 ULONGEST xfered_len
;
2032 /* If we previously failed to read 1 byte, nothing can be done here. */
2033 if (end
- begin
<= 1)
2039 /* Check that either first or the last byte is readable, and give up
2040 if not. This heuristic is meant to permit reading accessible memory
2041 at the boundary of accessible region. */
2042 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2043 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
2048 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2049 buf
+ (end
-begin
) - 1, end
- 1, 1,
2050 &xfered_len
) == TARGET_XFER_OK
)
2061 /* Loop invariant is that the [current_begin, current_end) was previously
2062 found to be not readable as a whole.
2064 Note loop condition -- if the range has 1 byte, we can't divide the range
2065 so there's no point trying further. */
2066 while (current_end
- current_begin
> 1)
2068 ULONGEST first_half_begin
, first_half_end
;
2069 ULONGEST second_half_begin
, second_half_end
;
2071 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2075 first_half_begin
= current_begin
;
2076 first_half_end
= middle
;
2077 second_half_begin
= middle
;
2078 second_half_end
= current_end
;
2082 first_half_begin
= middle
;
2083 first_half_end
= current_end
;
2084 second_half_begin
= current_begin
;
2085 second_half_end
= middle
;
2088 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2089 buf
+ (first_half_begin
- begin
),
2091 first_half_end
- first_half_begin
);
2093 if (xfer
== first_half_end
- first_half_begin
)
2095 /* This half reads up fine. So, the error must be in the
2097 current_begin
= second_half_begin
;
2098 current_end
= second_half_end
;
2102 /* This half is not readable. Because we've tried one byte, we
2103 know some part of this half if actually redable. Go to the next
2104 iteration to divide again and try to read.
2106 We don't handle the other half, because this function only tries
2107 to read a single readable subrange. */
2108 current_begin
= first_half_begin
;
2109 current_end
= first_half_end
;
2115 /* The [begin, current_begin) range has been read. */
2117 r
.end
= current_begin
;
2122 /* The [current_end, end) range has been read. */
2123 LONGEST rlen
= end
- current_end
;
2125 r
.data
= xmalloc (rlen
);
2126 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2127 r
.begin
= current_end
;
2131 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2135 free_memory_read_result_vector (void *x
)
2137 VEC(memory_read_result_s
) *v
= x
;
2138 memory_read_result_s
*current
;
2141 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2143 xfree (current
->data
);
2145 VEC_free (memory_read_result_s
, v
);
2148 VEC(memory_read_result_s
) *
2149 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2151 VEC(memory_read_result_s
) *result
= 0;
2154 while (xfered
< len
)
2156 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2159 /* If there is no explicit region, a fake one should be created. */
2160 gdb_assert (region
);
2162 if (region
->hi
== 0)
2163 rlen
= len
- xfered
;
2165 rlen
= region
->hi
- offset
;
2167 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2169 /* Cannot read this region. Note that we can end up here only
2170 if the region is explicitly marked inaccessible, or
2171 'inaccessible-by-default' is in effect. */
2176 LONGEST to_read
= min (len
- xfered
, rlen
);
2177 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2179 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2180 (gdb_byte
*) buffer
,
2181 offset
+ xfered
, to_read
);
2182 /* Call an observer, notifying them of the xfer progress? */
2185 /* Got an error reading full chunk. See if maybe we can read
2188 read_whatever_is_readable (ops
, offset
+ xfered
,
2189 offset
+ xfered
+ to_read
, &result
);
2194 struct memory_read_result r
;
2196 r
.begin
= offset
+ xfered
;
2197 r
.end
= r
.begin
+ xfer
;
2198 VEC_safe_push (memory_read_result_s
, result
, &r
);
2208 /* An alternative to target_write with progress callbacks. */
2211 target_write_with_progress (struct target_ops
*ops
,
2212 enum target_object object
,
2213 const char *annex
, const gdb_byte
*buf
,
2214 ULONGEST offset
, LONGEST len
,
2215 void (*progress
) (ULONGEST
, void *), void *baton
)
2219 /* Give the progress callback a chance to set up. */
2221 (*progress
) (0, baton
);
2223 while (xfered
< len
)
2225 ULONGEST xfered_len
;
2226 enum target_xfer_status status
;
2228 status
= target_write_partial (ops
, object
, annex
,
2229 (gdb_byte
*) buf
+ xfered
,
2230 offset
+ xfered
, len
- xfered
,
2233 if (status
== TARGET_XFER_EOF
)
2235 if (TARGET_XFER_STATUS_ERROR_P (status
))
2238 gdb_assert (status
== TARGET_XFER_OK
);
2240 (*progress
) (xfered_len
, baton
);
2242 xfered
+= xfered_len
;
2248 /* For docs on target_write see target.h. */
2251 target_write (struct target_ops
*ops
,
2252 enum target_object object
,
2253 const char *annex
, const gdb_byte
*buf
,
2254 ULONGEST offset
, LONGEST len
)
2256 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2260 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2261 the size of the transferred data. PADDING additional bytes are
2262 available in *BUF_P. This is a helper function for
2263 target_read_alloc; see the declaration of that function for more
2267 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2268 const char *annex
, gdb_byte
**buf_p
, int padding
)
2270 size_t buf_alloc
, buf_pos
;
2273 /* This function does not have a length parameter; it reads the
2274 entire OBJECT). Also, it doesn't support objects fetched partly
2275 from one target and partly from another (in a different stratum,
2276 e.g. a core file and an executable). Both reasons make it
2277 unsuitable for reading memory. */
2278 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2280 /* Start by reading up to 4K at a time. The target will throttle
2281 this number down if necessary. */
2283 buf
= xmalloc (buf_alloc
);
2287 ULONGEST xfered_len
;
2288 enum target_xfer_status status
;
2290 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2291 buf_pos
, buf_alloc
- buf_pos
- padding
,
2294 if (status
== TARGET_XFER_EOF
)
2296 /* Read all there was. */
2303 else if (status
!= TARGET_XFER_OK
)
2305 /* An error occurred. */
2307 return TARGET_XFER_E_IO
;
2310 buf_pos
+= xfered_len
;
2312 /* If the buffer is filling up, expand it. */
2313 if (buf_alloc
< buf_pos
* 2)
2316 buf
= xrealloc (buf
, buf_alloc
);
2323 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2324 the size of the transferred data. See the declaration in "target.h"
2325 function for more information about the return value. */
2328 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2329 const char *annex
, gdb_byte
**buf_p
)
2331 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2334 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2335 returned as a string, allocated using xmalloc. If an error occurs
2336 or the transfer is unsupported, NULL is returned. Empty objects
2337 are returned as allocated but empty strings. A warning is issued
2338 if the result contains any embedded NUL bytes. */
2341 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2346 LONGEST i
, transferred
;
2348 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2349 bufstr
= (char *) buffer
;
2351 if (transferred
< 0)
2354 if (transferred
== 0)
2355 return xstrdup ("");
2357 bufstr
[transferred
] = 0;
2359 /* Check for embedded NUL bytes; but allow trailing NULs. */
2360 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2363 warning (_("target object %d, annex %s, "
2364 "contained unexpected null characters"),
2365 (int) object
, annex
? annex
: "(none)");
2372 /* Memory transfer methods. */
2375 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2378 /* This method is used to read from an alternate, non-current
2379 target. This read must bypass the overlay support (as symbols
2380 don't match this target), and GDB's internal cache (wrong cache
2381 for this target). */
2382 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2384 memory_error (TARGET_XFER_E_IO
, addr
);
2388 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2389 int len
, enum bfd_endian byte_order
)
2391 gdb_byte buf
[sizeof (ULONGEST
)];
2393 gdb_assert (len
<= sizeof (buf
));
2394 get_target_memory (ops
, addr
, buf
, len
);
2395 return extract_unsigned_integer (buf
, len
, byte_order
);
2401 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2402 struct bp_target_info
*bp_tgt
)
2404 if (!may_insert_breakpoints
)
2406 warning (_("May not insert breakpoints"));
2410 return current_target
.to_insert_breakpoint (¤t_target
,
2417 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2418 struct bp_target_info
*bp_tgt
)
2420 /* This is kind of a weird case to handle, but the permission might
2421 have been changed after breakpoints were inserted - in which case
2422 we should just take the user literally and assume that any
2423 breakpoints should be left in place. */
2424 if (!may_insert_breakpoints
)
2426 warning (_("May not remove breakpoints"));
2430 return current_target
.to_remove_breakpoint (¤t_target
,
2435 target_info (char *args
, int from_tty
)
2437 struct target_ops
*t
;
2438 int has_all_mem
= 0;
2440 if (symfile_objfile
!= NULL
)
2441 printf_unfiltered (_("Symbols from \"%s\".\n"),
2442 objfile_name (symfile_objfile
));
2444 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2446 if (!(*t
->to_has_memory
) (t
))
2449 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2452 printf_unfiltered (_("\tWhile running this, "
2453 "GDB does not access memory from...\n"));
2454 printf_unfiltered ("%s:\n", t
->to_longname
);
2455 (t
->to_files_info
) (t
);
2456 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2460 /* This function is called before any new inferior is created, e.g.
2461 by running a program, attaching, or connecting to a target.
2462 It cleans up any state from previous invocations which might
2463 change between runs. This is a subset of what target_preopen
2464 resets (things which might change between targets). */
2467 target_pre_inferior (int from_tty
)
2469 /* Clear out solib state. Otherwise the solib state of the previous
2470 inferior might have survived and is entirely wrong for the new
2471 target. This has been observed on GNU/Linux using glibc 2.3. How
2483 Cannot access memory at address 0xdeadbeef
2486 /* In some OSs, the shared library list is the same/global/shared
2487 across inferiors. If code is shared between processes, so are
2488 memory regions and features. */
2489 if (!gdbarch_has_global_solist (target_gdbarch ()))
2491 no_shared_libraries (NULL
, from_tty
);
2493 invalidate_target_mem_regions ();
2495 target_clear_description ();
2498 agent_capability_invalidate ();
2501 /* Callback for iterate_over_inferiors. Gets rid of the given
2505 dispose_inferior (struct inferior
*inf
, void *args
)
2507 struct thread_info
*thread
;
2509 thread
= any_thread_of_process (inf
->pid
);
2512 switch_to_thread (thread
->ptid
);
2514 /* Core inferiors actually should be detached, not killed. */
2515 if (target_has_execution
)
2518 target_detach (NULL
, 0);
2524 /* This is to be called by the open routine before it does
2528 target_preopen (int from_tty
)
2532 if (have_inferiors ())
2535 || !have_live_inferiors ()
2536 || query (_("A program is being debugged already. Kill it? ")))
2537 iterate_over_inferiors (dispose_inferior
, NULL
);
2539 error (_("Program not killed."));
2542 /* Calling target_kill may remove the target from the stack. But if
2543 it doesn't (which seems like a win for UDI), remove it now. */
2544 /* Leave the exec target, though. The user may be switching from a
2545 live process to a core of the same program. */
2546 pop_all_targets_above (file_stratum
);
2548 target_pre_inferior (from_tty
);
2551 /* Detach a target after doing deferred register stores. */
2554 target_detach (const char *args
, int from_tty
)
2556 struct target_ops
* t
;
2558 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2559 /* Don't remove global breakpoints here. They're removed on
2560 disconnection from the target. */
2563 /* If we're in breakpoints-always-inserted mode, have to remove
2564 them before detaching. */
2565 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2567 prepare_for_detach ();
2569 current_target
.to_detach (¤t_target
, args
, from_tty
);
2571 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2576 target_disconnect (char *args
, int from_tty
)
2578 struct target_ops
*t
;
2580 /* If we're in breakpoints-always-inserted mode or if breakpoints
2581 are global across processes, we have to remove them before
2583 remove_breakpoints ();
2585 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2586 if (t
->to_disconnect
!= NULL
)
2589 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2591 t
->to_disconnect (t
, args
, from_tty
);
2599 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2601 struct target_ops
*t
;
2602 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2607 char *status_string
;
2608 char *options_string
;
2610 status_string
= target_waitstatus_to_string (status
);
2611 options_string
= target_options_to_string (options
);
2612 fprintf_unfiltered (gdb_stdlog
,
2613 "target_wait (%d, status, options={%s})"
2615 ptid_get_pid (ptid
), options_string
,
2616 ptid_get_pid (retval
), status_string
);
2617 xfree (status_string
);
2618 xfree (options_string
);
2625 target_pid_to_str (ptid_t ptid
)
2627 struct target_ops
*t
;
2629 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2631 if (t
->to_pid_to_str
!= NULL
)
2632 return (*t
->to_pid_to_str
) (t
, ptid
);
2635 return normal_pid_to_str (ptid
);
2639 target_thread_name (struct thread_info
*info
)
2641 return current_target
.to_thread_name (¤t_target
, info
);
2645 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2647 struct target_ops
*t
;
2649 target_dcache_invalidate ();
2651 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2653 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2654 ptid_get_pid (ptid
),
2655 step
? "step" : "continue",
2656 gdb_signal_to_name (signal
));
2658 registers_changed_ptid (ptid
);
2659 set_executing (ptid
, 1);
2660 set_running (ptid
, 1);
2661 clear_inline_frame_state (ptid
);
2665 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2667 struct target_ops
*t
;
2669 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2671 if (t
->to_pass_signals
!= NULL
)
2677 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2680 for (i
= 0; i
< numsigs
; i
++)
2681 if (pass_signals
[i
])
2682 fprintf_unfiltered (gdb_stdlog
, " %s",
2683 gdb_signal_to_name (i
));
2685 fprintf_unfiltered (gdb_stdlog
, " })\n");
2688 (*t
->to_pass_signals
) (t
, numsigs
, pass_signals
);
2695 target_program_signals (int numsigs
, unsigned char *program_signals
)
2697 struct target_ops
*t
;
2699 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2701 if (t
->to_program_signals
!= NULL
)
2707 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2710 for (i
= 0; i
< numsigs
; i
++)
2711 if (program_signals
[i
])
2712 fprintf_unfiltered (gdb_stdlog
, " %s",
2713 gdb_signal_to_name (i
));
2715 fprintf_unfiltered (gdb_stdlog
, " })\n");
2718 (*t
->to_program_signals
) (t
, numsigs
, program_signals
);
2724 /* Look through the list of possible targets for a target that can
2728 target_follow_fork (int follow_child
, int detach_fork
)
2730 struct target_ops
*t
;
2732 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2734 if (t
->to_follow_fork
!= NULL
)
2736 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2739 fprintf_unfiltered (gdb_stdlog
,
2740 "target_follow_fork (%d, %d) = %d\n",
2741 follow_child
, detach_fork
, retval
);
2746 /* Some target returned a fork event, but did not know how to follow it. */
2747 internal_error (__FILE__
, __LINE__
,
2748 _("could not find a target to follow fork"));
2752 target_mourn_inferior (void)
2754 struct target_ops
*t
;
2756 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2758 if (t
->to_mourn_inferior
!= NULL
)
2760 t
->to_mourn_inferior (t
);
2762 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2764 /* We no longer need to keep handles on any of the object files.
2765 Make sure to release them to avoid unnecessarily locking any
2766 of them while we're not actually debugging. */
2767 bfd_cache_close_all ();
2773 internal_error (__FILE__
, __LINE__
,
2774 _("could not find a target to follow mourn inferior"));
2777 /* Look for a target which can describe architectural features, starting
2778 from TARGET. If we find one, return its description. */
2780 const struct target_desc
*
2781 target_read_description (struct target_ops
*target
)
2783 struct target_ops
*t
;
2785 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2786 if (t
->to_read_description
!= NULL
)
2788 const struct target_desc
*tdesc
;
2790 tdesc
= t
->to_read_description (t
);
2798 /* The default implementation of to_search_memory.
2799 This implements a basic search of memory, reading target memory and
2800 performing the search here (as opposed to performing the search in on the
2801 target side with, for example, gdbserver). */
2804 simple_search_memory (struct target_ops
*ops
,
2805 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2806 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2807 CORE_ADDR
*found_addrp
)
2809 /* NOTE: also defined in find.c testcase. */
2810 #define SEARCH_CHUNK_SIZE 16000
2811 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2812 /* Buffer to hold memory contents for searching. */
2813 gdb_byte
*search_buf
;
2814 unsigned search_buf_size
;
2815 struct cleanup
*old_cleanups
;
2817 search_buf_size
= chunk_size
+ pattern_len
- 1;
2819 /* No point in trying to allocate a buffer larger than the search space. */
2820 if (search_space_len
< search_buf_size
)
2821 search_buf_size
= search_space_len
;
2823 search_buf
= malloc (search_buf_size
);
2824 if (search_buf
== NULL
)
2825 error (_("Unable to allocate memory to perform the search."));
2826 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2828 /* Prime the search buffer. */
2830 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2831 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2833 warning (_("Unable to access %s bytes of target "
2834 "memory at %s, halting search."),
2835 pulongest (search_buf_size
), hex_string (start_addr
));
2836 do_cleanups (old_cleanups
);
2840 /* Perform the search.
2842 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2843 When we've scanned N bytes we copy the trailing bytes to the start and
2844 read in another N bytes. */
2846 while (search_space_len
>= pattern_len
)
2848 gdb_byte
*found_ptr
;
2849 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2851 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2852 pattern
, pattern_len
);
2854 if (found_ptr
!= NULL
)
2856 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2858 *found_addrp
= found_addr
;
2859 do_cleanups (old_cleanups
);
2863 /* Not found in this chunk, skip to next chunk. */
2865 /* Don't let search_space_len wrap here, it's unsigned. */
2866 if (search_space_len
>= chunk_size
)
2867 search_space_len
-= chunk_size
;
2869 search_space_len
= 0;
2871 if (search_space_len
>= pattern_len
)
2873 unsigned keep_len
= search_buf_size
- chunk_size
;
2874 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2877 /* Copy the trailing part of the previous iteration to the front
2878 of the buffer for the next iteration. */
2879 gdb_assert (keep_len
== pattern_len
- 1);
2880 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2882 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2884 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2885 search_buf
+ keep_len
, read_addr
,
2886 nr_to_read
) != nr_to_read
)
2888 warning (_("Unable to access %s bytes of target "
2889 "memory at %s, halting search."),
2890 plongest (nr_to_read
),
2891 hex_string (read_addr
));
2892 do_cleanups (old_cleanups
);
2896 start_addr
+= chunk_size
;
2902 do_cleanups (old_cleanups
);
2906 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2907 sequence of bytes in PATTERN with length PATTERN_LEN.
2909 The result is 1 if found, 0 if not found, and -1 if there was an error
2910 requiring halting of the search (e.g. memory read error).
2911 If the pattern is found the address is recorded in FOUND_ADDRP. */
2914 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2915 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2916 CORE_ADDR
*found_addrp
)
2918 struct target_ops
*t
;
2921 /* We don't use INHERIT to set current_target.to_search_memory,
2922 so we have to scan the target stack and handle targetdebug
2926 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2927 hex_string (start_addr
));
2929 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2930 if (t
->to_search_memory
!= NULL
)
2935 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2936 pattern
, pattern_len
, found_addrp
);
2940 /* If a special version of to_search_memory isn't available, use the
2942 found
= simple_search_memory (current_target
.beneath
,
2943 start_addr
, search_space_len
,
2944 pattern
, pattern_len
, found_addrp
);
2948 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2953 /* Look through the currently pushed targets. If none of them will
2954 be able to restart the currently running process, issue an error
2958 target_require_runnable (void)
2960 struct target_ops
*t
;
2962 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2964 /* If this target knows how to create a new program, then
2965 assume we will still be able to after killing the current
2966 one. Either killing and mourning will not pop T, or else
2967 find_default_run_target will find it again. */
2968 if (t
->to_create_inferior
!= NULL
)
2971 /* Do not worry about thread_stratum targets that can not
2972 create inferiors. Assume they will be pushed again if
2973 necessary, and continue to the process_stratum. */
2974 if (t
->to_stratum
== thread_stratum
2975 || t
->to_stratum
== arch_stratum
)
2978 error (_("The \"%s\" target does not support \"run\". "
2979 "Try \"help target\" or \"continue\"."),
2983 /* This function is only called if the target is running. In that
2984 case there should have been a process_stratum target and it
2985 should either know how to create inferiors, or not... */
2986 internal_error (__FILE__
, __LINE__
, _("No targets found"));
2989 /* Look through the list of possible targets for a target that can
2990 execute a run or attach command without any other data. This is
2991 used to locate the default process stratum.
2993 If DO_MESG is not NULL, the result is always valid (error() is
2994 called for errors); else, return NULL on error. */
2996 static struct target_ops
*
2997 find_default_run_target (char *do_mesg
)
2999 struct target_ops
**t
;
3000 struct target_ops
*runable
= NULL
;
3005 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3008 if ((*t
)->to_can_run
&& target_can_run (*t
))
3018 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3027 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3029 struct target_ops
*t
;
3031 t
= find_default_run_target ("attach");
3032 (t
->to_attach
) (t
, args
, from_tty
);
3037 find_default_create_inferior (struct target_ops
*ops
,
3038 char *exec_file
, char *allargs
, char **env
,
3041 struct target_ops
*t
;
3043 t
= find_default_run_target ("run");
3044 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3049 find_default_can_async_p (struct target_ops
*ignore
)
3051 struct target_ops
*t
;
3053 /* This may be called before the target is pushed on the stack;
3054 look for the default process stratum. If there's none, gdb isn't
3055 configured with a native debugger, and target remote isn't
3057 t
= find_default_run_target (NULL
);
3058 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
3059 return (t
->to_can_async_p
) (t
);
3064 find_default_is_async_p (struct target_ops
*ignore
)
3066 struct target_ops
*t
;
3068 /* This may be called before the target is pushed on the stack;
3069 look for the default process stratum. If there's none, gdb isn't
3070 configured with a native debugger, and target remote isn't
3072 t
= find_default_run_target (NULL
);
3073 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
3074 return (t
->to_is_async_p
) (t
);
3079 find_default_supports_non_stop (struct target_ops
*self
)
3081 struct target_ops
*t
;
3083 t
= find_default_run_target (NULL
);
3084 if (t
&& t
->to_supports_non_stop
)
3085 return (t
->to_supports_non_stop
) (t
);
3090 target_supports_non_stop (void)
3092 struct target_ops
*t
;
3094 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3095 if (t
->to_supports_non_stop
)
3096 return t
->to_supports_non_stop (t
);
3101 /* Implement the "info proc" command. */
3104 target_info_proc (char *args
, enum info_proc_what what
)
3106 struct target_ops
*t
;
3108 /* If we're already connected to something that can get us OS
3109 related data, use it. Otherwise, try using the native
3111 if (current_target
.to_stratum
>= process_stratum
)
3112 t
= current_target
.beneath
;
3114 t
= find_default_run_target (NULL
);
3116 for (; t
!= NULL
; t
= t
->beneath
)
3118 if (t
->to_info_proc
!= NULL
)
3120 t
->to_info_proc (t
, args
, what
);
3123 fprintf_unfiltered (gdb_stdlog
,
3124 "target_info_proc (\"%s\", %d)\n", args
, what
);
3134 find_default_supports_disable_randomization (struct target_ops
*self
)
3136 struct target_ops
*t
;
3138 t
= find_default_run_target (NULL
);
3139 if (t
&& t
->to_supports_disable_randomization
)
3140 return (t
->to_supports_disable_randomization
) (t
);
3145 target_supports_disable_randomization (void)
3147 struct target_ops
*t
;
3149 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3150 if (t
->to_supports_disable_randomization
)
3151 return t
->to_supports_disable_randomization (t
);
3157 target_get_osdata (const char *type
)
3159 struct target_ops
*t
;
3161 /* If we're already connected to something that can get us OS
3162 related data, use it. Otherwise, try using the native
3164 if (current_target
.to_stratum
>= process_stratum
)
3165 t
= current_target
.beneath
;
3167 t
= find_default_run_target ("get OS data");
3172 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3175 /* Determine the current address space of thread PTID. */
3177 struct address_space
*
3178 target_thread_address_space (ptid_t ptid
)
3180 struct address_space
*aspace
;
3181 struct inferior
*inf
;
3182 struct target_ops
*t
;
3184 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3186 if (t
->to_thread_address_space
!= NULL
)
3188 aspace
= t
->to_thread_address_space (t
, ptid
);
3189 gdb_assert (aspace
);
3192 fprintf_unfiltered (gdb_stdlog
,
3193 "target_thread_address_space (%s) = %d\n",
3194 target_pid_to_str (ptid
),
3195 address_space_num (aspace
));
3200 /* Fall-back to the "main" address space of the inferior. */
3201 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3203 if (inf
== NULL
|| inf
->aspace
== NULL
)
3204 internal_error (__FILE__
, __LINE__
,
3205 _("Can't determine the current "
3206 "address space of thread %s\n"),
3207 target_pid_to_str (ptid
));
3213 /* Target file operations. */
3215 static struct target_ops
*
3216 default_fileio_target (void)
3218 /* If we're already connected to something that can perform
3219 file I/O, use it. Otherwise, try using the native target. */
3220 if (current_target
.to_stratum
>= process_stratum
)
3221 return current_target
.beneath
;
3223 return find_default_run_target ("file I/O");
3226 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3227 target file descriptor, or -1 if an error occurs (and set
3230 target_fileio_open (const char *filename
, int flags
, int mode
,
3233 struct target_ops
*t
;
3235 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3237 if (t
->to_fileio_open
!= NULL
)
3239 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3242 fprintf_unfiltered (gdb_stdlog
,
3243 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3244 filename
, flags
, mode
,
3245 fd
, fd
!= -1 ? 0 : *target_errno
);
3250 *target_errno
= FILEIO_ENOSYS
;
3254 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3255 Return the number of bytes written, or -1 if an error occurs
3256 (and set *TARGET_ERRNO). */
3258 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3259 ULONGEST offset
, int *target_errno
)
3261 struct target_ops
*t
;
3263 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3265 if (t
->to_fileio_pwrite
!= NULL
)
3267 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3271 fprintf_unfiltered (gdb_stdlog
,
3272 "target_fileio_pwrite (%d,...,%d,%s) "
3274 fd
, len
, pulongest (offset
),
3275 ret
, ret
!= -1 ? 0 : *target_errno
);
3280 *target_errno
= FILEIO_ENOSYS
;
3284 /* Read up to LEN bytes FD on the target into READ_BUF.
3285 Return the number of bytes read, or -1 if an error occurs
3286 (and set *TARGET_ERRNO). */
3288 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3289 ULONGEST offset
, int *target_errno
)
3291 struct target_ops
*t
;
3293 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3295 if (t
->to_fileio_pread
!= NULL
)
3297 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3301 fprintf_unfiltered (gdb_stdlog
,
3302 "target_fileio_pread (%d,...,%d,%s) "
3304 fd
, len
, pulongest (offset
),
3305 ret
, ret
!= -1 ? 0 : *target_errno
);
3310 *target_errno
= FILEIO_ENOSYS
;
3314 /* Close FD on the target. Return 0, or -1 if an error occurs
3315 (and set *TARGET_ERRNO). */
3317 target_fileio_close (int fd
, int *target_errno
)
3319 struct target_ops
*t
;
3321 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3323 if (t
->to_fileio_close
!= NULL
)
3325 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3328 fprintf_unfiltered (gdb_stdlog
,
3329 "target_fileio_close (%d) = %d (%d)\n",
3330 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3335 *target_errno
= FILEIO_ENOSYS
;
3339 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3340 occurs (and set *TARGET_ERRNO). */
3342 target_fileio_unlink (const char *filename
, int *target_errno
)
3344 struct target_ops
*t
;
3346 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3348 if (t
->to_fileio_unlink
!= NULL
)
3350 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3353 fprintf_unfiltered (gdb_stdlog
,
3354 "target_fileio_unlink (%s) = %d (%d)\n",
3355 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3360 *target_errno
= FILEIO_ENOSYS
;
3364 /* Read value of symbolic link FILENAME on the target. Return a
3365 null-terminated string allocated via xmalloc, or NULL if an error
3366 occurs (and set *TARGET_ERRNO). */
3368 target_fileio_readlink (const char *filename
, int *target_errno
)
3370 struct target_ops
*t
;
3372 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3374 if (t
->to_fileio_readlink
!= NULL
)
3376 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3379 fprintf_unfiltered (gdb_stdlog
,
3380 "target_fileio_readlink (%s) = %s (%d)\n",
3381 filename
, ret
? ret
: "(nil)",
3382 ret
? 0 : *target_errno
);
3387 *target_errno
= FILEIO_ENOSYS
;
3392 target_fileio_close_cleanup (void *opaque
)
3394 int fd
= *(int *) opaque
;
3397 target_fileio_close (fd
, &target_errno
);
3400 /* Read target file FILENAME. Store the result in *BUF_P and
3401 return the size of the transferred data. PADDING additional bytes are
3402 available in *BUF_P. This is a helper function for
3403 target_fileio_read_alloc; see the declaration of that function for more
3407 target_fileio_read_alloc_1 (const char *filename
,
3408 gdb_byte
**buf_p
, int padding
)
3410 struct cleanup
*close_cleanup
;
3411 size_t buf_alloc
, buf_pos
;
3417 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3421 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3423 /* Start by reading up to 4K at a time. The target will throttle
3424 this number down if necessary. */
3426 buf
= xmalloc (buf_alloc
);
3430 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3431 buf_alloc
- buf_pos
- padding
, buf_pos
,
3435 /* An error occurred. */
3436 do_cleanups (close_cleanup
);
3442 /* Read all there was. */
3443 do_cleanups (close_cleanup
);
3453 /* If the buffer is filling up, expand it. */
3454 if (buf_alloc
< buf_pos
* 2)
3457 buf
= xrealloc (buf
, buf_alloc
);
3464 /* Read target file FILENAME. Store the result in *BUF_P and return
3465 the size of the transferred data. See the declaration in "target.h"
3466 function for more information about the return value. */
3469 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3471 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3474 /* Read target file FILENAME. The result is NUL-terminated and
3475 returned as a string, allocated using xmalloc. If an error occurs
3476 or the transfer is unsupported, NULL is returned. Empty objects
3477 are returned as allocated but empty strings. A warning is issued
3478 if the result contains any embedded NUL bytes. */
3481 target_fileio_read_stralloc (const char *filename
)
3485 LONGEST i
, transferred
;
3487 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3488 bufstr
= (char *) buffer
;
3490 if (transferred
< 0)
3493 if (transferred
== 0)
3494 return xstrdup ("");
3496 bufstr
[transferred
] = 0;
3498 /* Check for embedded NUL bytes; but allow trailing NULs. */
3499 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3502 warning (_("target file %s "
3503 "contained unexpected null characters"),
3513 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3514 CORE_ADDR addr
, int len
)
3516 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3520 default_watchpoint_addr_within_range (struct target_ops
*target
,
3522 CORE_ADDR start
, int length
)
3524 return addr
>= start
&& addr
< start
+ length
;
3527 static struct gdbarch
*
3528 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3530 return target_gdbarch ();
3540 return_minus_one (void)
3552 * Find the next target down the stack from the specified target.
3556 find_target_beneath (struct target_ops
*t
)
3564 find_target_at (enum strata stratum
)
3566 struct target_ops
*t
;
3568 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3569 if (t
->to_stratum
== stratum
)
3576 /* The inferior process has died. Long live the inferior! */
3579 generic_mourn_inferior (void)
3583 ptid
= inferior_ptid
;
3584 inferior_ptid
= null_ptid
;
3586 /* Mark breakpoints uninserted in case something tries to delete a
3587 breakpoint while we delete the inferior's threads (which would
3588 fail, since the inferior is long gone). */
3589 mark_breakpoints_out ();
3591 if (!ptid_equal (ptid
, null_ptid
))
3593 int pid
= ptid_get_pid (ptid
);
3594 exit_inferior (pid
);
3597 /* Note this wipes step-resume breakpoints, so needs to be done
3598 after exit_inferior, which ends up referencing the step-resume
3599 breakpoints through clear_thread_inferior_resources. */
3600 breakpoint_init_inferior (inf_exited
);
3602 registers_changed ();
3604 reopen_exec_file ();
3605 reinit_frame_cache ();
3607 if (deprecated_detach_hook
)
3608 deprecated_detach_hook ();
3611 /* Convert a normal process ID to a string. Returns the string in a
3615 normal_pid_to_str (ptid_t ptid
)
3617 static char buf
[32];
3619 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3624 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3626 return normal_pid_to_str (ptid
);
3629 /* Error-catcher for target_find_memory_regions. */
3631 dummy_find_memory_regions (struct target_ops
*self
,
3632 find_memory_region_ftype ignore1
, void *ignore2
)
3634 error (_("Command not implemented for this target."));
3638 /* Error-catcher for target_make_corefile_notes. */
3640 dummy_make_corefile_notes (struct target_ops
*self
,
3641 bfd
*ignore1
, int *ignore2
)
3643 error (_("Command not implemented for this target."));
3647 /* Set up the handful of non-empty slots needed by the dummy target
3651 init_dummy_target (void)
3653 dummy_target
.to_shortname
= "None";
3654 dummy_target
.to_longname
= "None";
3655 dummy_target
.to_doc
= "";
3656 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3657 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3658 dummy_target
.to_supports_disable_randomization
3659 = find_default_supports_disable_randomization
;
3660 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3661 dummy_target
.to_stratum
= dummy_stratum
;
3662 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3663 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3664 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3665 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3666 dummy_target
.to_has_execution
3667 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3668 dummy_target
.to_magic
= OPS_MAGIC
;
3670 install_dummy_methods (&dummy_target
);
3674 debug_to_open (char *args
, int from_tty
)
3676 debug_target
.to_open (args
, from_tty
);
3678 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3682 target_close (struct target_ops
*targ
)
3684 gdb_assert (!target_is_pushed (targ
));
3686 if (targ
->to_xclose
!= NULL
)
3687 targ
->to_xclose (targ
);
3688 else if (targ
->to_close
!= NULL
)
3689 targ
->to_close (targ
);
3692 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3696 target_attach (char *args
, int from_tty
)
3698 current_target
.to_attach (¤t_target
, args
, from_tty
);
3700 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3705 target_thread_alive (ptid_t ptid
)
3707 struct target_ops
*t
;
3709 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3711 if (t
->to_thread_alive
!= NULL
)
3715 retval
= t
->to_thread_alive (t
, ptid
);
3717 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3718 ptid_get_pid (ptid
), retval
);
3728 target_find_new_threads (void)
3730 struct target_ops
*t
;
3732 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3734 if (t
->to_find_new_threads
!= NULL
)
3736 t
->to_find_new_threads (t
);
3738 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3746 target_stop (ptid_t ptid
)
3750 warning (_("May not interrupt or stop the target, ignoring attempt"));
3754 (*current_target
.to_stop
) (¤t_target
, ptid
);
3758 debug_to_post_attach (struct target_ops
*self
, int pid
)
3760 debug_target
.to_post_attach (&debug_target
, pid
);
3762 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3765 /* Concatenate ELEM to LIST, a comma separate list, and return the
3766 result. The LIST incoming argument is released. */
3769 str_comma_list_concat_elem (char *list
, const char *elem
)
3772 return xstrdup (elem
);
3774 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3777 /* Helper for target_options_to_string. If OPT is present in
3778 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3779 Returns the new resulting string. OPT is removed from
3783 do_option (int *target_options
, char *ret
,
3784 int opt
, char *opt_str
)
3786 if ((*target_options
& opt
) != 0)
3788 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3789 *target_options
&= ~opt
;
3796 target_options_to_string (int target_options
)
3800 #define DO_TARG_OPTION(OPT) \
3801 ret = do_option (&target_options, ret, OPT, #OPT)
3803 DO_TARG_OPTION (TARGET_WNOHANG
);
3805 if (target_options
!= 0)
3806 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3814 debug_print_register (const char * func
,
3815 struct regcache
*regcache
, int regno
)
3817 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3819 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3820 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3821 && gdbarch_register_name (gdbarch
, regno
) != NULL
3822 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3823 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3824 gdbarch_register_name (gdbarch
, regno
));
3826 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3827 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3829 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3830 int i
, size
= register_size (gdbarch
, regno
);
3831 gdb_byte buf
[MAX_REGISTER_SIZE
];
3833 regcache_raw_collect (regcache
, regno
, buf
);
3834 fprintf_unfiltered (gdb_stdlog
, " = ");
3835 for (i
= 0; i
< size
; i
++)
3837 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3839 if (size
<= sizeof (LONGEST
))
3841 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3843 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3844 core_addr_to_string_nz (val
), plongest (val
));
3847 fprintf_unfiltered (gdb_stdlog
, "\n");
3851 target_fetch_registers (struct regcache
*regcache
, int regno
)
3853 struct target_ops
*t
;
3855 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3857 if (t
->to_fetch_registers
!= NULL
)
3859 t
->to_fetch_registers (t
, regcache
, regno
);
3861 debug_print_register ("target_fetch_registers", regcache
, regno
);
3868 target_store_registers (struct regcache
*regcache
, int regno
)
3870 struct target_ops
*t
;
3872 if (!may_write_registers
)
3873 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3875 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3878 debug_print_register ("target_store_registers", regcache
, regno
);
3883 target_core_of_thread (ptid_t ptid
)
3885 struct target_ops
*t
;
3887 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3889 if (t
->to_core_of_thread
!= NULL
)
3891 int retval
= t
->to_core_of_thread (t
, ptid
);
3894 fprintf_unfiltered (gdb_stdlog
,
3895 "target_core_of_thread (%d) = %d\n",
3896 ptid_get_pid (ptid
), retval
);
3905 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3907 struct target_ops
*t
;
3909 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3911 if (t
->to_verify_memory
!= NULL
)
3913 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3916 fprintf_unfiltered (gdb_stdlog
,
3917 "target_verify_memory (%s, %s) = %d\n",
3918 paddress (target_gdbarch (), memaddr
),
3928 /* The documentation for this function is in its prototype declaration in
3932 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3934 struct target_ops
*t
;
3936 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3937 if (t
->to_insert_mask_watchpoint
!= NULL
)
3941 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
3944 fprintf_unfiltered (gdb_stdlog
, "\
3945 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3946 core_addr_to_string (addr
),
3947 core_addr_to_string (mask
), rw
, ret
);
3955 /* The documentation for this function is in its prototype declaration in
3959 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3961 struct target_ops
*t
;
3963 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3964 if (t
->to_remove_mask_watchpoint
!= NULL
)
3968 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
3971 fprintf_unfiltered (gdb_stdlog
, "\
3972 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3973 core_addr_to_string (addr
),
3974 core_addr_to_string (mask
), rw
, ret
);
3982 /* The documentation for this function is in its prototype declaration
3986 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
3988 struct target_ops
*t
;
3990 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3991 if (t
->to_masked_watch_num_registers
!= NULL
)
3992 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
3997 /* The documentation for this function is in its prototype declaration
4001 target_ranged_break_num_registers (void)
4003 struct target_ops
*t
;
4005 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4006 if (t
->to_ranged_break_num_registers
!= NULL
)
4007 return t
->to_ranged_break_num_registers (t
);
4014 struct btrace_target_info
*
4015 target_enable_btrace (ptid_t ptid
)
4017 struct target_ops
*t
;
4019 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4020 if (t
->to_enable_btrace
!= NULL
)
4021 return t
->to_enable_btrace (t
, ptid
);
4030 target_disable_btrace (struct btrace_target_info
*btinfo
)
4032 struct target_ops
*t
;
4034 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4035 if (t
->to_disable_btrace
!= NULL
)
4037 t
->to_disable_btrace (t
, btinfo
);
4047 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4049 struct target_ops
*t
;
4051 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4052 if (t
->to_teardown_btrace
!= NULL
)
4054 t
->to_teardown_btrace (t
, btinfo
);
4064 target_read_btrace (VEC (btrace_block_s
) **btrace
,
4065 struct btrace_target_info
*btinfo
,
4066 enum btrace_read_type type
)
4068 struct target_ops
*t
;
4070 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4071 if (t
->to_read_btrace
!= NULL
)
4072 return t
->to_read_btrace (t
, btrace
, btinfo
, type
);
4075 return BTRACE_ERR_NOT_SUPPORTED
;
4081 target_stop_recording (void)
4083 struct target_ops
*t
;
4085 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4086 if (t
->to_stop_recording
!= NULL
)
4088 t
->to_stop_recording (t
);
4092 /* This is optional. */
4098 target_info_record (void)
4100 struct target_ops
*t
;
4102 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4103 if (t
->to_info_record
!= NULL
)
4105 t
->to_info_record (t
);
4115 target_save_record (const char *filename
)
4117 struct target_ops
*t
;
4119 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4120 if (t
->to_save_record
!= NULL
)
4122 t
->to_save_record (t
, filename
);
4132 target_supports_delete_record (void)
4134 struct target_ops
*t
;
4136 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4137 if (t
->to_delete_record
!= NULL
)
4146 target_delete_record (void)
4148 struct target_ops
*t
;
4150 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4151 if (t
->to_delete_record
!= NULL
)
4153 t
->to_delete_record (t
);
4163 target_record_is_replaying (void)
4165 struct target_ops
*t
;
4167 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4168 if (t
->to_record_is_replaying
!= NULL
)
4169 return t
->to_record_is_replaying (t
);
4177 target_goto_record_begin (void)
4179 struct target_ops
*t
;
4181 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4182 if (t
->to_goto_record_begin
!= NULL
)
4184 t
->to_goto_record_begin (t
);
4194 target_goto_record_end (void)
4196 struct target_ops
*t
;
4198 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4199 if (t
->to_goto_record_end
!= NULL
)
4201 t
->to_goto_record_end (t
);
4211 target_goto_record (ULONGEST insn
)
4213 struct target_ops
*t
;
4215 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4216 if (t
->to_goto_record
!= NULL
)
4218 t
->to_goto_record (t
, insn
);
4228 target_insn_history (int size
, int flags
)
4230 struct target_ops
*t
;
4232 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4233 if (t
->to_insn_history
!= NULL
)
4235 t
->to_insn_history (t
, size
, flags
);
4245 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4247 struct target_ops
*t
;
4249 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4250 if (t
->to_insn_history_from
!= NULL
)
4252 t
->to_insn_history_from (t
, from
, size
, flags
);
4262 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4264 struct target_ops
*t
;
4266 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4267 if (t
->to_insn_history_range
!= NULL
)
4269 t
->to_insn_history_range (t
, begin
, end
, flags
);
4279 target_call_history (int size
, int flags
)
4281 struct target_ops
*t
;
4283 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4284 if (t
->to_call_history
!= NULL
)
4286 t
->to_call_history (t
, size
, flags
);
4296 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4298 struct target_ops
*t
;
4300 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4301 if (t
->to_call_history_from
!= NULL
)
4303 t
->to_call_history_from (t
, begin
, size
, flags
);
4313 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4315 struct target_ops
*t
;
4317 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4318 if (t
->to_call_history_range
!= NULL
)
4320 t
->to_call_history_range (t
, begin
, end
, flags
);
4328 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
4330 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
4332 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4337 const struct frame_unwind
*
4338 target_get_unwinder (void)
4340 struct target_ops
*t
;
4342 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4343 if (t
->to_get_unwinder
!= NULL
)
4344 return t
->to_get_unwinder
;
4351 const struct frame_unwind
*
4352 target_get_tailcall_unwinder (void)
4354 struct target_ops
*t
;
4356 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4357 if (t
->to_get_tailcall_unwinder
!= NULL
)
4358 return t
->to_get_tailcall_unwinder
;
4366 forward_target_decr_pc_after_break (struct target_ops
*ops
,
4367 struct gdbarch
*gdbarch
)
4369 for (; ops
!= NULL
; ops
= ops
->beneath
)
4370 if (ops
->to_decr_pc_after_break
!= NULL
)
4371 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
4373 return gdbarch_decr_pc_after_break (gdbarch
);
4379 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
4381 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
4385 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4386 int write
, struct mem_attrib
*attrib
,
4387 struct target_ops
*target
)
4391 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4394 fprintf_unfiltered (gdb_stdlog
,
4395 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4396 paddress (target_gdbarch (), memaddr
), len
,
4397 write
? "write" : "read", retval
);
4403 fputs_unfiltered (", bytes =", gdb_stdlog
);
4404 for (i
= 0; i
< retval
; i
++)
4406 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4408 if (targetdebug
< 2 && i
> 0)
4410 fprintf_unfiltered (gdb_stdlog
, " ...");
4413 fprintf_unfiltered (gdb_stdlog
, "\n");
4416 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4420 fputc_unfiltered ('\n', gdb_stdlog
);
4426 debug_to_files_info (struct target_ops
*target
)
4428 debug_target
.to_files_info (target
);
4430 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4434 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4435 struct bp_target_info
*bp_tgt
)
4439 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4441 fprintf_unfiltered (gdb_stdlog
,
4442 "target_insert_breakpoint (%s, xxx) = %ld\n",
4443 core_addr_to_string (bp_tgt
->placed_address
),
4444 (unsigned long) retval
);
4449 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4450 struct bp_target_info
*bp_tgt
)
4454 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4456 fprintf_unfiltered (gdb_stdlog
,
4457 "target_remove_breakpoint (%s, xxx) = %ld\n",
4458 core_addr_to_string (bp_tgt
->placed_address
),
4459 (unsigned long) retval
);
4464 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4465 int type
, int cnt
, int from_tty
)
4469 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4470 type
, cnt
, from_tty
);
4472 fprintf_unfiltered (gdb_stdlog
,
4473 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4474 (unsigned long) type
,
4475 (unsigned long) cnt
,
4476 (unsigned long) from_tty
,
4477 (unsigned long) retval
);
4482 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4483 CORE_ADDR addr
, int len
)
4487 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4490 fprintf_unfiltered (gdb_stdlog
,
4491 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4492 core_addr_to_string (addr
), (unsigned long) len
,
4493 core_addr_to_string (retval
));
4498 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4499 CORE_ADDR addr
, int len
, int rw
,
4500 struct expression
*cond
)
4504 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4508 fprintf_unfiltered (gdb_stdlog
,
4509 "target_can_accel_watchpoint_condition "
4510 "(%s, %d, %d, %s) = %ld\n",
4511 core_addr_to_string (addr
), len
, rw
,
4512 host_address_to_string (cond
), (unsigned long) retval
);
4517 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4521 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4523 fprintf_unfiltered (gdb_stdlog
,
4524 "target_stopped_by_watchpoint () = %ld\n",
4525 (unsigned long) retval
);
4530 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4534 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4536 fprintf_unfiltered (gdb_stdlog
,
4537 "target_stopped_data_address ([%s]) = %ld\n",
4538 core_addr_to_string (*addr
),
4539 (unsigned long)retval
);
4544 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4546 CORE_ADDR start
, int length
)
4550 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4553 fprintf_filtered (gdb_stdlog
,
4554 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4555 core_addr_to_string (addr
), core_addr_to_string (start
),
4561 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4562 struct gdbarch
*gdbarch
,
4563 struct bp_target_info
*bp_tgt
)
4567 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4570 fprintf_unfiltered (gdb_stdlog
,
4571 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4572 core_addr_to_string (bp_tgt
->placed_address
),
4573 (unsigned long) retval
);
4578 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4579 struct gdbarch
*gdbarch
,
4580 struct bp_target_info
*bp_tgt
)
4584 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4587 fprintf_unfiltered (gdb_stdlog
,
4588 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4589 core_addr_to_string (bp_tgt
->placed_address
),
4590 (unsigned long) retval
);
4595 debug_to_insert_watchpoint (struct target_ops
*self
,
4596 CORE_ADDR addr
, int len
, int type
,
4597 struct expression
*cond
)
4601 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4602 addr
, len
, type
, cond
);
4604 fprintf_unfiltered (gdb_stdlog
,
4605 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4606 core_addr_to_string (addr
), len
, type
,
4607 host_address_to_string (cond
), (unsigned long) retval
);
4612 debug_to_remove_watchpoint (struct target_ops
*self
,
4613 CORE_ADDR addr
, int len
, int type
,
4614 struct expression
*cond
)
4618 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4619 addr
, len
, type
, cond
);
4621 fprintf_unfiltered (gdb_stdlog
,
4622 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4623 core_addr_to_string (addr
), len
, type
,
4624 host_address_to_string (cond
), (unsigned long) retval
);
4629 debug_to_terminal_init (struct target_ops
*self
)
4631 debug_target
.to_terminal_init (&debug_target
);
4633 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4637 debug_to_terminal_inferior (struct target_ops
*self
)
4639 debug_target
.to_terminal_inferior (&debug_target
);
4641 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4645 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4647 debug_target
.to_terminal_ours_for_output (&debug_target
);
4649 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4653 debug_to_terminal_ours (struct target_ops
*self
)
4655 debug_target
.to_terminal_ours (&debug_target
);
4657 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4661 debug_to_terminal_save_ours (struct target_ops
*self
)
4663 debug_target
.to_terminal_save_ours (&debug_target
);
4665 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4669 debug_to_terminal_info (struct target_ops
*self
,
4670 const char *arg
, int from_tty
)
4672 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4674 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4679 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4681 debug_target
.to_load (&debug_target
, args
, from_tty
);
4683 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4687 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4689 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4691 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4692 ptid_get_pid (ptid
));
4696 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4700 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4702 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4709 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4713 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4715 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4722 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4726 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4728 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4735 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4739 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4741 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4748 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4752 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4754 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4761 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4765 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4767 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4774 debug_to_has_exited (struct target_ops
*self
,
4775 int pid
, int wait_status
, int *exit_status
)
4779 has_exited
= debug_target
.to_has_exited (&debug_target
,
4780 pid
, wait_status
, exit_status
);
4782 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4783 pid
, wait_status
, *exit_status
, has_exited
);
4789 debug_to_can_run (struct target_ops
*self
)
4793 retval
= debug_target
.to_can_run (&debug_target
);
4795 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4800 static struct gdbarch
*
4801 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4803 struct gdbarch
*retval
;
4805 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4807 fprintf_unfiltered (gdb_stdlog
,
4808 "target_thread_architecture (%s) = %s [%s]\n",
4809 target_pid_to_str (ptid
),
4810 host_address_to_string (retval
),
4811 gdbarch_bfd_arch_info (retval
)->printable_name
);
4816 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4818 debug_target
.to_stop (&debug_target
, ptid
);
4820 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4821 target_pid_to_str (ptid
));
4825 debug_to_rcmd (struct target_ops
*self
, char *command
,
4826 struct ui_file
*outbuf
)
4828 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4829 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4833 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4837 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4839 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4846 setup_target_debug (void)
4848 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4850 current_target
.to_open
= debug_to_open
;
4851 current_target
.to_post_attach
= debug_to_post_attach
;
4852 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4853 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4854 current_target
.to_files_info
= debug_to_files_info
;
4855 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4856 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4857 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4858 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4859 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4860 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4861 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4862 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4863 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4864 current_target
.to_watchpoint_addr_within_range
4865 = debug_to_watchpoint_addr_within_range
;
4866 current_target
.to_region_ok_for_hw_watchpoint
4867 = debug_to_region_ok_for_hw_watchpoint
;
4868 current_target
.to_can_accel_watchpoint_condition
4869 = debug_to_can_accel_watchpoint_condition
;
4870 current_target
.to_terminal_init
= debug_to_terminal_init
;
4871 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4872 current_target
.to_terminal_ours_for_output
4873 = debug_to_terminal_ours_for_output
;
4874 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4875 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4876 current_target
.to_terminal_info
= debug_to_terminal_info
;
4877 current_target
.to_load
= debug_to_load
;
4878 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4879 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4880 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4881 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4882 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4883 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4884 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4885 current_target
.to_has_exited
= debug_to_has_exited
;
4886 current_target
.to_can_run
= debug_to_can_run
;
4887 current_target
.to_stop
= debug_to_stop
;
4888 current_target
.to_rcmd
= debug_to_rcmd
;
4889 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4890 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4894 static char targ_desc
[] =
4895 "Names of targets and files being debugged.\nShows the entire \
4896 stack of targets currently in use (including the exec-file,\n\
4897 core-file, and process, if any), as well as the symbol file name.";
4900 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4902 error (_("\"monitor\" command not supported by this target."));
4906 do_monitor_command (char *cmd
,
4909 target_rcmd (cmd
, gdb_stdtarg
);
4912 /* Print the name of each layers of our target stack. */
4915 maintenance_print_target_stack (char *cmd
, int from_tty
)
4917 struct target_ops
*t
;
4919 printf_filtered (_("The current target stack is:\n"));
4921 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4923 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4927 /* Controls if async mode is permitted. */
4928 int target_async_permitted
= 0;
4930 /* The set command writes to this variable. If the inferior is
4931 executing, target_async_permitted is *not* updated. */
4932 static int target_async_permitted_1
= 0;
4935 set_target_async_command (char *args
, int from_tty
,
4936 struct cmd_list_element
*c
)
4938 if (have_live_inferiors ())
4940 target_async_permitted_1
= target_async_permitted
;
4941 error (_("Cannot change this setting while the inferior is running."));
4944 target_async_permitted
= target_async_permitted_1
;
4948 show_target_async_command (struct ui_file
*file
, int from_tty
,
4949 struct cmd_list_element
*c
,
4952 fprintf_filtered (file
,
4953 _("Controlling the inferior in "
4954 "asynchronous mode is %s.\n"), value
);
4957 /* Temporary copies of permission settings. */
4959 static int may_write_registers_1
= 1;
4960 static int may_write_memory_1
= 1;
4961 static int may_insert_breakpoints_1
= 1;
4962 static int may_insert_tracepoints_1
= 1;
4963 static int may_insert_fast_tracepoints_1
= 1;
4964 static int may_stop_1
= 1;
4966 /* Make the user-set values match the real values again. */
4969 update_target_permissions (void)
4971 may_write_registers_1
= may_write_registers
;
4972 may_write_memory_1
= may_write_memory
;
4973 may_insert_breakpoints_1
= may_insert_breakpoints
;
4974 may_insert_tracepoints_1
= may_insert_tracepoints
;
4975 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4976 may_stop_1
= may_stop
;
4979 /* The one function handles (most of) the permission flags in the same
4983 set_target_permissions (char *args
, int from_tty
,
4984 struct cmd_list_element
*c
)
4986 if (target_has_execution
)
4988 update_target_permissions ();
4989 error (_("Cannot change this setting while the inferior is running."));
4992 /* Make the real values match the user-changed values. */
4993 may_write_registers
= may_write_registers_1
;
4994 may_insert_breakpoints
= may_insert_breakpoints_1
;
4995 may_insert_tracepoints
= may_insert_tracepoints_1
;
4996 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4997 may_stop
= may_stop_1
;
4998 update_observer_mode ();
5001 /* Set memory write permission independently of observer mode. */
5004 set_write_memory_permission (char *args
, int from_tty
,
5005 struct cmd_list_element
*c
)
5007 /* Make the real values match the user-changed values. */
5008 may_write_memory
= may_write_memory_1
;
5009 update_observer_mode ();
5014 initialize_targets (void)
5016 init_dummy_target ();
5017 push_target (&dummy_target
);
5019 add_info ("target", target_info
, targ_desc
);
5020 add_info ("files", target_info
, targ_desc
);
5022 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
5023 Set target debugging."), _("\
5024 Show target debugging."), _("\
5025 When non-zero, target debugging is enabled. Higher numbers are more\n\
5026 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
5030 &setdebuglist
, &showdebuglist
);
5032 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
5033 &trust_readonly
, _("\
5034 Set mode for reading from readonly sections."), _("\
5035 Show mode for reading from readonly sections."), _("\
5036 When this mode is on, memory reads from readonly sections (such as .text)\n\
5037 will be read from the object file instead of from the target. This will\n\
5038 result in significant performance improvement for remote targets."),
5040 show_trust_readonly
,
5041 &setlist
, &showlist
);
5043 add_com ("monitor", class_obscure
, do_monitor_command
,
5044 _("Send a command to the remote monitor (remote targets only)."));
5046 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5047 _("Print the name of each layer of the internal target stack."),
5048 &maintenanceprintlist
);
5050 add_setshow_boolean_cmd ("target-async", no_class
,
5051 &target_async_permitted_1
, _("\
5052 Set whether gdb controls the inferior in asynchronous mode."), _("\
5053 Show whether gdb controls the inferior in asynchronous mode."), _("\
5054 Tells gdb whether to control the inferior in asynchronous mode."),
5055 set_target_async_command
,
5056 show_target_async_command
,
5060 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5061 &may_write_registers_1
, _("\
5062 Set permission to write into registers."), _("\
5063 Show permission to write into registers."), _("\
5064 When this permission is on, GDB may write into the target's registers.\n\
5065 Otherwise, any sort of write attempt will result in an error."),
5066 set_target_permissions
, NULL
,
5067 &setlist
, &showlist
);
5069 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5070 &may_write_memory_1
, _("\
5071 Set permission to write into target memory."), _("\
5072 Show permission to write into target memory."), _("\
5073 When this permission is on, GDB may write into the target's memory.\n\
5074 Otherwise, any sort of write attempt will result in an error."),
5075 set_write_memory_permission
, NULL
,
5076 &setlist
, &showlist
);
5078 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5079 &may_insert_breakpoints_1
, _("\
5080 Set permission to insert breakpoints in the target."), _("\
5081 Show permission to insert breakpoints in the target."), _("\
5082 When this permission is on, GDB may insert breakpoints in the program.\n\
5083 Otherwise, any sort of insertion attempt will result in an error."),
5084 set_target_permissions
, NULL
,
5085 &setlist
, &showlist
);
5087 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5088 &may_insert_tracepoints_1
, _("\
5089 Set permission to insert tracepoints in the target."), _("\
5090 Show permission to insert tracepoints in the target."), _("\
5091 When this permission is on, GDB may insert tracepoints in the program.\n\
5092 Otherwise, any sort of insertion attempt will result in an error."),
5093 set_target_permissions
, NULL
,
5094 &setlist
, &showlist
);
5096 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5097 &may_insert_fast_tracepoints_1
, _("\
5098 Set permission to insert fast tracepoints in the target."), _("\
5099 Show permission to insert fast tracepoints in the target."), _("\
5100 When this permission is on, GDB may insert fast tracepoints.\n\
5101 Otherwise, any sort of insertion attempt will result in an error."),
5102 set_target_permissions
, NULL
,
5103 &setlist
, &showlist
);
5105 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5107 Set permission to interrupt or signal the target."), _("\
5108 Show permission to interrupt or signal the target."), _("\
5109 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5110 Otherwise, any attempt to interrupt or stop will be ignored."),
5111 set_target_permissions
, NULL
,
5112 &setlist
, &showlist
);