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 (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 (CORE_ADDR
, int);
57 static void tcomplain (void) ATTRIBUTE_NORETURN
;
59 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
61 static int return_zero (void);
63 static int return_one (void);
65 static int return_minus_one (void);
67 static void *return_null (void);
69 void target_ignore (void);
71 static void target_command (char *, int);
73 static struct target_ops
*find_default_run_target (char *);
75 static target_xfer_partial_ftype default_xfer_partial
;
77 static target_xfer_partial_ftype current_xfer_partial
;
79 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
82 static void init_dummy_target (void);
84 static struct target_ops debug_target
;
86 static void debug_to_open (char *, int);
88 static void debug_to_prepare_to_store (struct regcache
*);
90 static void debug_to_files_info (struct target_ops
*);
92 static int debug_to_insert_breakpoint (struct gdbarch
*,
93 struct bp_target_info
*);
95 static int debug_to_remove_breakpoint (struct gdbarch
*,
96 struct bp_target_info
*);
98 static int debug_to_can_use_hw_breakpoint (int, int, int);
100 static int debug_to_insert_hw_breakpoint (struct gdbarch
*,
101 struct bp_target_info
*);
103 static int debug_to_remove_hw_breakpoint (struct gdbarch
*,
104 struct bp_target_info
*);
106 static int debug_to_insert_watchpoint (CORE_ADDR
, int, int,
107 struct expression
*);
109 static int debug_to_remove_watchpoint (CORE_ADDR
, int, int,
110 struct expression
*);
112 static int debug_to_stopped_by_watchpoint (void);
114 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
116 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
117 CORE_ADDR
, CORE_ADDR
, int);
119 static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
121 static int debug_to_can_accel_watchpoint_condition (CORE_ADDR
, int, int,
122 struct expression
*);
124 static void debug_to_terminal_init (void);
126 static void debug_to_terminal_inferior (void);
128 static void debug_to_terminal_ours_for_output (void);
130 static void debug_to_terminal_save_ours (void);
132 static void debug_to_terminal_ours (void);
134 static void debug_to_load (char *, int);
136 static int debug_to_can_run (void);
138 static void debug_to_stop (ptid_t
);
140 /* Pointer to array of target architecture structures; the size of the
141 array; the current index into the array; the allocated size of the
143 struct target_ops
**target_structs
;
144 unsigned target_struct_size
;
145 unsigned target_struct_allocsize
;
146 #define DEFAULT_ALLOCSIZE 10
148 /* The initial current target, so that there is always a semi-valid
151 static struct target_ops dummy_target
;
153 /* Top of target stack. */
155 static struct target_ops
*target_stack
;
157 /* The target structure we are currently using to talk to a process
158 or file or whatever "inferior" we have. */
160 struct target_ops current_target
;
162 /* Command list for target. */
164 static struct cmd_list_element
*targetlist
= NULL
;
166 /* Nonzero if we should trust readonly sections from the
167 executable when reading memory. */
169 static int trust_readonly
= 0;
171 /* Nonzero if we should show true memory content including
172 memory breakpoint inserted by gdb. */
174 static int show_memory_breakpoints
= 0;
176 /* These globals control whether GDB attempts to perform these
177 operations; they are useful for targets that need to prevent
178 inadvertant disruption, such as in non-stop mode. */
180 int may_write_registers
= 1;
182 int may_write_memory
= 1;
184 int may_insert_breakpoints
= 1;
186 int may_insert_tracepoints
= 1;
188 int may_insert_fast_tracepoints
= 1;
192 /* Non-zero if we want to see trace of target level stuff. */
194 static unsigned int targetdebug
= 0;
196 show_targetdebug (struct ui_file
*file
, int from_tty
,
197 struct cmd_list_element
*c
, const char *value
)
199 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
202 static void setup_target_debug (void);
204 /* The user just typed 'target' without the name of a target. */
207 target_command (char *arg
, int from_tty
)
209 fputs_filtered ("Argument required (target name). Try `help target'\n",
213 /* Default target_has_* methods for process_stratum targets. */
216 default_child_has_all_memory (struct target_ops
*ops
)
218 /* If no inferior selected, then we can't read memory here. */
219 if (ptid_equal (inferior_ptid
, null_ptid
))
226 default_child_has_memory (struct target_ops
*ops
)
228 /* If no inferior selected, then we can't read memory here. */
229 if (ptid_equal (inferior_ptid
, null_ptid
))
236 default_child_has_stack (struct target_ops
*ops
)
238 /* If no inferior selected, there's no stack. */
239 if (ptid_equal (inferior_ptid
, null_ptid
))
246 default_child_has_registers (struct target_ops
*ops
)
248 /* Can't read registers from no inferior. */
249 if (ptid_equal (inferior_ptid
, null_ptid
))
256 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
258 /* If there's no thread selected, then we can't make it run through
260 if (ptid_equal (the_ptid
, null_ptid
))
268 target_has_all_memory_1 (void)
270 struct target_ops
*t
;
272 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
273 if (t
->to_has_all_memory (t
))
280 target_has_memory_1 (void)
282 struct target_ops
*t
;
284 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
285 if (t
->to_has_memory (t
))
292 target_has_stack_1 (void)
294 struct target_ops
*t
;
296 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
297 if (t
->to_has_stack (t
))
304 target_has_registers_1 (void)
306 struct target_ops
*t
;
308 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
309 if (t
->to_has_registers (t
))
316 target_has_execution_1 (ptid_t the_ptid
)
318 struct target_ops
*t
;
320 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
321 if (t
->to_has_execution (t
, the_ptid
))
328 target_has_execution_current (void)
330 return target_has_execution_1 (inferior_ptid
);
333 /* Complete initialization of T. This ensures that various fields in
334 T are set, if needed by the target implementation. */
337 complete_target_initialization (struct target_ops
*t
)
339 /* Provide default values for all "must have" methods. */
340 if (t
->to_xfer_partial
== NULL
)
341 t
->to_xfer_partial
= default_xfer_partial
;
343 if (t
->to_has_all_memory
== NULL
)
344 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
346 if (t
->to_has_memory
== NULL
)
347 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
349 if (t
->to_has_stack
== NULL
)
350 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
352 if (t
->to_has_registers
== NULL
)
353 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
355 if (t
->to_has_execution
== NULL
)
356 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
359 /* Add possible target architecture T to the list and add a new
360 command 'target T->to_shortname'. Set COMPLETER as the command's
361 completer if not NULL. */
364 add_target_with_completer (struct target_ops
*t
,
365 completer_ftype
*completer
)
367 struct cmd_list_element
*c
;
369 complete_target_initialization (t
);
373 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
374 target_structs
= (struct target_ops
**) xmalloc
375 (target_struct_allocsize
* sizeof (*target_structs
));
377 if (target_struct_size
>= target_struct_allocsize
)
379 target_struct_allocsize
*= 2;
380 target_structs
= (struct target_ops
**)
381 xrealloc ((char *) target_structs
,
382 target_struct_allocsize
* sizeof (*target_structs
));
384 target_structs
[target_struct_size
++] = t
;
386 if (targetlist
== NULL
)
387 add_prefix_cmd ("target", class_run
, target_command
, _("\
388 Connect to a target machine or process.\n\
389 The first argument is the type or protocol of the target machine.\n\
390 Remaining arguments are interpreted by the target protocol. For more\n\
391 information on the arguments for a particular protocol, type\n\
392 `help target ' followed by the protocol name."),
393 &targetlist
, "target ", 0, &cmdlist
);
394 c
= add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
,
396 if (completer
!= NULL
)
397 set_cmd_completer (c
, completer
);
400 /* Add a possible target architecture to the list. */
403 add_target (struct target_ops
*t
)
405 add_target_with_completer (t
, NULL
);
411 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
413 struct cmd_list_element
*c
;
416 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
418 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
419 alt
= xstrprintf ("target %s", t
->to_shortname
);
420 deprecate_cmd (c
, alt
);
433 struct target_ops
*t
;
435 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
436 if (t
->to_kill
!= NULL
)
439 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
449 target_load (char *arg
, int from_tty
)
451 target_dcache_invalidate ();
452 (*current_target
.to_load
) (arg
, from_tty
);
456 target_create_inferior (char *exec_file
, char *args
,
457 char **env
, int from_tty
)
459 struct target_ops
*t
;
461 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
463 if (t
->to_create_inferior
!= NULL
)
465 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
467 fprintf_unfiltered (gdb_stdlog
,
468 "target_create_inferior (%s, %s, xxx, %d)\n",
469 exec_file
, args
, from_tty
);
474 internal_error (__FILE__
, __LINE__
,
475 _("could not find a target to create inferior"));
479 target_terminal_inferior (void)
481 /* A background resume (``run&'') should leave GDB in control of the
482 terminal. Use target_can_async_p, not target_is_async_p, since at
483 this point the target is not async yet. However, if sync_execution
484 is not set, we know it will become async prior to resume. */
485 if (target_can_async_p () && !sync_execution
)
488 /* If GDB is resuming the inferior in the foreground, install
489 inferior's terminal modes. */
490 (*current_target
.to_terminal_inferior
) ();
494 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
495 struct target_ops
*t
)
497 errno
= EIO
; /* Can't read/write this location. */
498 return 0; /* No bytes handled. */
504 error (_("You can't do that when your target is `%s'"),
505 current_target
.to_shortname
);
511 error (_("You can't do that without a process to debug."));
515 default_terminal_info (const char *args
, int from_tty
)
517 printf_unfiltered (_("No saved terminal information.\n"));
520 /* A default implementation for the to_get_ada_task_ptid target method.
522 This function builds the PTID by using both LWP and TID as part of
523 the PTID lwp and tid elements. The pid used is the pid of the
527 default_get_ada_task_ptid (long lwp
, long tid
)
529 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
532 static enum exec_direction_kind
533 default_execution_direction (void)
535 if (!target_can_execute_reverse
)
537 else if (!target_can_async_p ())
540 gdb_assert_not_reached ("\
541 to_execution_direction must be implemented for reverse async");
544 /* Go through the target stack from top to bottom, copying over zero
545 entries in current_target, then filling in still empty entries. In
546 effect, we are doing class inheritance through the pushed target
549 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
550 is currently implemented, is that it discards any knowledge of
551 which target an inherited method originally belonged to.
552 Consequently, new new target methods should instead explicitly and
553 locally search the target stack for the target that can handle the
557 update_current_target (void)
559 struct target_ops
*t
;
561 /* First, reset current's contents. */
562 memset (¤t_target
, 0, sizeof (current_target
));
564 #define INHERIT(FIELD, TARGET) \
565 if (!current_target.FIELD) \
566 current_target.FIELD = (TARGET)->FIELD
568 for (t
= target_stack
; t
; t
= t
->beneath
)
570 INHERIT (to_shortname
, t
);
571 INHERIT (to_longname
, t
);
573 /* Do not inherit to_open. */
574 /* Do not inherit to_close. */
575 /* Do not inherit to_attach. */
576 INHERIT (to_post_attach
, t
);
577 INHERIT (to_attach_no_wait
, t
);
578 /* Do not inherit to_detach. */
579 /* Do not inherit to_disconnect. */
580 /* Do not inherit to_resume. */
581 /* Do not inherit to_wait. */
582 /* Do not inherit to_fetch_registers. */
583 /* Do not inherit to_store_registers. */
584 INHERIT (to_prepare_to_store
, t
);
585 INHERIT (deprecated_xfer_memory
, t
);
586 INHERIT (to_files_info
, t
);
587 INHERIT (to_insert_breakpoint
, t
);
588 INHERIT (to_remove_breakpoint
, t
);
589 INHERIT (to_can_use_hw_breakpoint
, t
);
590 INHERIT (to_insert_hw_breakpoint
, t
);
591 INHERIT (to_remove_hw_breakpoint
, t
);
592 /* Do not inherit to_ranged_break_num_registers. */
593 INHERIT (to_insert_watchpoint
, t
);
594 INHERIT (to_remove_watchpoint
, t
);
595 /* Do not inherit to_insert_mask_watchpoint. */
596 /* Do not inherit to_remove_mask_watchpoint. */
597 INHERIT (to_stopped_data_address
, t
);
598 INHERIT (to_have_steppable_watchpoint
, t
);
599 INHERIT (to_have_continuable_watchpoint
, t
);
600 INHERIT (to_stopped_by_watchpoint
, t
);
601 INHERIT (to_watchpoint_addr_within_range
, t
);
602 INHERIT (to_region_ok_for_hw_watchpoint
, t
);
603 INHERIT (to_can_accel_watchpoint_condition
, t
);
604 /* Do not inherit to_masked_watch_num_registers. */
605 INHERIT (to_terminal_init
, t
);
606 INHERIT (to_terminal_inferior
, t
);
607 INHERIT (to_terminal_ours_for_output
, t
);
608 INHERIT (to_terminal_ours
, t
);
609 INHERIT (to_terminal_save_ours
, t
);
610 INHERIT (to_terminal_info
, t
);
611 /* Do not inherit to_kill. */
612 INHERIT (to_load
, t
);
613 /* Do no inherit to_create_inferior. */
614 INHERIT (to_post_startup_inferior
, t
);
615 INHERIT (to_insert_fork_catchpoint
, t
);
616 INHERIT (to_remove_fork_catchpoint
, t
);
617 INHERIT (to_insert_vfork_catchpoint
, t
);
618 INHERIT (to_remove_vfork_catchpoint
, t
);
619 /* Do not inherit to_follow_fork. */
620 INHERIT (to_insert_exec_catchpoint
, t
);
621 INHERIT (to_remove_exec_catchpoint
, t
);
622 INHERIT (to_set_syscall_catchpoint
, t
);
623 INHERIT (to_has_exited
, t
);
624 /* Do not inherit to_mourn_inferior. */
625 INHERIT (to_can_run
, t
);
626 /* Do not inherit to_pass_signals. */
627 /* Do not inherit to_program_signals. */
628 /* Do not inherit to_thread_alive. */
629 /* Do not inherit to_find_new_threads. */
630 /* Do not inherit to_pid_to_str. */
631 INHERIT (to_extra_thread_info
, t
);
632 INHERIT (to_thread_name
, t
);
633 INHERIT (to_stop
, t
);
634 /* Do not inherit to_xfer_partial. */
635 INHERIT (to_rcmd
, t
);
636 INHERIT (to_pid_to_exec_file
, t
);
637 INHERIT (to_log_command
, t
);
638 INHERIT (to_stratum
, t
);
639 /* Do not inherit to_has_all_memory. */
640 /* Do not inherit to_has_memory. */
641 /* Do not inherit to_has_stack. */
642 /* Do not inherit to_has_registers. */
643 /* Do not inherit to_has_execution. */
644 INHERIT (to_has_thread_control
, t
);
645 INHERIT (to_can_async_p
, t
);
646 INHERIT (to_is_async_p
, t
);
647 INHERIT (to_async
, t
);
648 INHERIT (to_find_memory_regions
, t
);
649 INHERIT (to_make_corefile_notes
, t
);
650 INHERIT (to_get_bookmark
, t
);
651 INHERIT (to_goto_bookmark
, t
);
652 /* Do not inherit to_get_thread_local_address. */
653 INHERIT (to_can_execute_reverse
, t
);
654 INHERIT (to_execution_direction
, t
);
655 INHERIT (to_thread_architecture
, t
);
656 /* Do not inherit to_read_description. */
657 INHERIT (to_get_ada_task_ptid
, t
);
658 /* Do not inherit to_search_memory. */
659 INHERIT (to_supports_multi_process
, t
);
660 INHERIT (to_supports_enable_disable_tracepoint
, t
);
661 INHERIT (to_supports_string_tracing
, t
);
662 INHERIT (to_trace_init
, t
);
663 INHERIT (to_download_tracepoint
, t
);
664 INHERIT (to_can_download_tracepoint
, t
);
665 INHERIT (to_download_trace_state_variable
, t
);
666 INHERIT (to_enable_tracepoint
, t
);
667 INHERIT (to_disable_tracepoint
, t
);
668 INHERIT (to_trace_set_readonly_regions
, t
);
669 INHERIT (to_trace_start
, t
);
670 INHERIT (to_get_trace_status
, t
);
671 INHERIT (to_get_tracepoint_status
, t
);
672 INHERIT (to_trace_stop
, t
);
673 INHERIT (to_trace_find
, t
);
674 INHERIT (to_get_trace_state_variable_value
, t
);
675 INHERIT (to_save_trace_data
, t
);
676 INHERIT (to_upload_tracepoints
, t
);
677 INHERIT (to_upload_trace_state_variables
, t
);
678 INHERIT (to_get_raw_trace_data
, t
);
679 INHERIT (to_get_min_fast_tracepoint_insn_len
, t
);
680 INHERIT (to_set_disconnected_tracing
, t
);
681 INHERIT (to_set_circular_trace_buffer
, t
);
682 INHERIT (to_set_trace_buffer_size
, t
);
683 INHERIT (to_set_trace_notes
, t
);
684 INHERIT (to_get_tib_address
, t
);
685 INHERIT (to_set_permissions
, t
);
686 INHERIT (to_static_tracepoint_marker_at
, t
);
687 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
688 INHERIT (to_traceframe_info
, t
);
689 INHERIT (to_use_agent
, t
);
690 INHERIT (to_can_use_agent
, t
);
691 INHERIT (to_augmented_libraries_svr4_read
, t
);
692 INHERIT (to_magic
, t
);
693 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
694 INHERIT (to_can_run_breakpoint_commands
, t
);
695 /* Do not inherit to_memory_map. */
696 /* Do not inherit to_flash_erase. */
697 /* Do not inherit to_flash_done. */
701 /* Clean up a target struct so it no longer has any zero pointers in
702 it. Some entries are defaulted to a method that print an error,
703 others are hard-wired to a standard recursive default. */
705 #define de_fault(field, value) \
706 if (!current_target.field) \
707 current_target.field = value
710 (void (*) (char *, int))
715 de_fault (to_post_attach
,
718 de_fault (to_prepare_to_store
,
719 (void (*) (struct regcache
*))
721 de_fault (deprecated_xfer_memory
,
722 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
723 struct mem_attrib
*, struct target_ops
*))
725 de_fault (to_files_info
,
726 (void (*) (struct target_ops
*))
728 de_fault (to_insert_breakpoint
,
729 memory_insert_breakpoint
);
730 de_fault (to_remove_breakpoint
,
731 memory_remove_breakpoint
);
732 de_fault (to_can_use_hw_breakpoint
,
733 (int (*) (int, int, int))
735 de_fault (to_insert_hw_breakpoint
,
736 (int (*) (struct gdbarch
*, struct bp_target_info
*))
738 de_fault (to_remove_hw_breakpoint
,
739 (int (*) (struct gdbarch
*, struct bp_target_info
*))
741 de_fault (to_insert_watchpoint
,
742 (int (*) (CORE_ADDR
, int, int, struct expression
*))
744 de_fault (to_remove_watchpoint
,
745 (int (*) (CORE_ADDR
, int, int, struct expression
*))
747 de_fault (to_stopped_by_watchpoint
,
750 de_fault (to_stopped_data_address
,
751 (int (*) (struct target_ops
*, CORE_ADDR
*))
753 de_fault (to_watchpoint_addr_within_range
,
754 default_watchpoint_addr_within_range
);
755 de_fault (to_region_ok_for_hw_watchpoint
,
756 default_region_ok_for_hw_watchpoint
);
757 de_fault (to_can_accel_watchpoint_condition
,
758 (int (*) (CORE_ADDR
, int, int, struct expression
*))
760 de_fault (to_terminal_init
,
763 de_fault (to_terminal_inferior
,
766 de_fault (to_terminal_ours_for_output
,
769 de_fault (to_terminal_ours
,
772 de_fault (to_terminal_save_ours
,
775 de_fault (to_terminal_info
,
776 default_terminal_info
);
778 (void (*) (char *, int))
780 de_fault (to_post_startup_inferior
,
783 de_fault (to_insert_fork_catchpoint
,
786 de_fault (to_remove_fork_catchpoint
,
789 de_fault (to_insert_vfork_catchpoint
,
792 de_fault (to_remove_vfork_catchpoint
,
795 de_fault (to_insert_exec_catchpoint
,
798 de_fault (to_remove_exec_catchpoint
,
801 de_fault (to_set_syscall_catchpoint
,
802 (int (*) (int, int, int, int, int *))
804 de_fault (to_has_exited
,
805 (int (*) (int, int, int *))
807 de_fault (to_can_run
,
809 de_fault (to_extra_thread_info
,
810 (char *(*) (struct thread_info
*))
812 de_fault (to_thread_name
,
813 (char *(*) (struct thread_info
*))
818 current_target
.to_xfer_partial
= current_xfer_partial
;
820 (void (*) (char *, struct ui_file
*))
822 de_fault (to_pid_to_exec_file
,
826 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
828 de_fault (to_thread_architecture
,
829 default_thread_architecture
);
830 current_target
.to_read_description
= NULL
;
831 de_fault (to_get_ada_task_ptid
,
832 (ptid_t (*) (long, long))
833 default_get_ada_task_ptid
);
834 de_fault (to_supports_multi_process
,
837 de_fault (to_supports_enable_disable_tracepoint
,
840 de_fault (to_supports_string_tracing
,
843 de_fault (to_trace_init
,
846 de_fault (to_download_tracepoint
,
847 (void (*) (struct bp_location
*))
849 de_fault (to_can_download_tracepoint
,
852 de_fault (to_download_trace_state_variable
,
853 (void (*) (struct trace_state_variable
*))
855 de_fault (to_enable_tracepoint
,
856 (void (*) (struct bp_location
*))
858 de_fault (to_disable_tracepoint
,
859 (void (*) (struct bp_location
*))
861 de_fault (to_trace_set_readonly_regions
,
864 de_fault (to_trace_start
,
867 de_fault (to_get_trace_status
,
868 (int (*) (struct trace_status
*))
870 de_fault (to_get_tracepoint_status
,
871 (void (*) (struct breakpoint
*, struct uploaded_tp
*))
873 de_fault (to_trace_stop
,
876 de_fault (to_trace_find
,
877 (int (*) (enum trace_find_type
, int, CORE_ADDR
, CORE_ADDR
, int *))
879 de_fault (to_get_trace_state_variable_value
,
880 (int (*) (int, LONGEST
*))
882 de_fault (to_save_trace_data
,
883 (int (*) (const char *))
885 de_fault (to_upload_tracepoints
,
886 (int (*) (struct uploaded_tp
**))
888 de_fault (to_upload_trace_state_variables
,
889 (int (*) (struct uploaded_tsv
**))
891 de_fault (to_get_raw_trace_data
,
892 (LONGEST (*) (gdb_byte
*, ULONGEST
, LONGEST
))
894 de_fault (to_get_min_fast_tracepoint_insn_len
,
897 de_fault (to_set_disconnected_tracing
,
900 de_fault (to_set_circular_trace_buffer
,
903 de_fault (to_set_trace_buffer_size
,
906 de_fault (to_set_trace_notes
,
907 (int (*) (const char *, const char *, const char *))
909 de_fault (to_get_tib_address
,
910 (int (*) (ptid_t
, CORE_ADDR
*))
912 de_fault (to_set_permissions
,
915 de_fault (to_static_tracepoint_marker_at
,
916 (int (*) (CORE_ADDR
, struct static_tracepoint_marker
*))
918 de_fault (to_static_tracepoint_markers_by_strid
,
919 (VEC(static_tracepoint_marker_p
) * (*) (const char *))
921 de_fault (to_traceframe_info
,
922 (struct traceframe_info
* (*) (void))
924 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
927 de_fault (to_can_run_breakpoint_commands
,
930 de_fault (to_use_agent
,
933 de_fault (to_can_use_agent
,
936 de_fault (to_augmented_libraries_svr4_read
,
939 de_fault (to_execution_direction
, default_execution_direction
);
943 /* Finally, position the target-stack beneath the squashed
944 "current_target". That way code looking for a non-inherited
945 target method can quickly and simply find it. */
946 current_target
.beneath
= target_stack
;
949 setup_target_debug ();
952 /* Push a new target type into the stack of the existing target accessors,
953 possibly superseding some of the existing accessors.
955 Rather than allow an empty stack, we always have the dummy target at
956 the bottom stratum, so we can call the function vectors without
960 push_target (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 /* Find the proper stratum to install this target in. */
976 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
978 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
982 /* If there's already targets at this stratum, remove them. */
983 /* FIXME: cagney/2003-10-15: I think this should be popping all
984 targets to CUR, and not just those at this stratum level. */
985 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
987 /* There's already something at this stratum level. Close it,
988 and un-hook it from the stack. */
989 struct target_ops
*tmp
= (*cur
);
991 (*cur
) = (*cur
)->beneath
;
996 /* We have removed all targets in our stratum, now add the new one. */
1000 update_current_target ();
1003 /* Remove a target_ops vector from the stack, wherever it may be.
1004 Return how many times it was removed (0 or 1). */
1007 unpush_target (struct target_ops
*t
)
1009 struct target_ops
**cur
;
1010 struct target_ops
*tmp
;
1012 if (t
->to_stratum
== dummy_stratum
)
1013 internal_error (__FILE__
, __LINE__
,
1014 _("Attempt to unpush the dummy target"));
1016 /* Look for the specified target. Note that we assume that a target
1017 can only occur once in the target stack. */
1019 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1025 /* If we don't find target_ops, quit. Only open targets should be
1030 /* Unchain the target. */
1032 (*cur
) = (*cur
)->beneath
;
1033 tmp
->beneath
= NULL
;
1035 update_current_target ();
1037 /* Finally close the target. Note we do this after unchaining, so
1038 any target method calls from within the target_close
1039 implementation don't end up in T anymore. */
1046 pop_all_targets_above (enum strata above_stratum
)
1048 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
1050 if (!unpush_target (target_stack
))
1052 fprintf_unfiltered (gdb_stderr
,
1053 "pop_all_targets couldn't find target %s\n",
1054 target_stack
->to_shortname
);
1055 internal_error (__FILE__
, __LINE__
,
1056 _("failed internal consistency check"));
1063 pop_all_targets (void)
1065 pop_all_targets_above (dummy_stratum
);
1068 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
1071 target_is_pushed (struct target_ops
*t
)
1073 struct target_ops
**cur
;
1075 /* Check magic number. If wrong, it probably means someone changed
1076 the struct definition, but not all the places that initialize one. */
1077 if (t
->to_magic
!= OPS_MAGIC
)
1079 fprintf_unfiltered (gdb_stderr
,
1080 "Magic number of %s target struct wrong\n",
1082 internal_error (__FILE__
, __LINE__
,
1083 _("failed internal consistency check"));
1086 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1093 /* Using the objfile specified in OBJFILE, find the address for the
1094 current thread's thread-local storage with offset OFFSET. */
1096 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1098 volatile CORE_ADDR addr
= 0;
1099 struct target_ops
*target
;
1101 for (target
= current_target
.beneath
;
1103 target
= target
->beneath
)
1105 if (target
->to_get_thread_local_address
!= NULL
)
1110 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
1112 ptid_t ptid
= inferior_ptid
;
1113 volatile struct gdb_exception ex
;
1115 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1119 /* Fetch the load module address for this objfile. */
1120 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1122 /* If it's 0, throw the appropriate exception. */
1124 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1125 _("TLS load module not found"));
1127 addr
= target
->to_get_thread_local_address (target
, ptid
,
1130 /* If an error occurred, print TLS related messages here. Otherwise,
1131 throw the error to some higher catcher. */
1134 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1138 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1139 error (_("Cannot find thread-local variables "
1140 "in this thread library."));
1142 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1143 if (objfile_is_library
)
1144 error (_("Cannot find shared library `%s' in dynamic"
1145 " linker's load module list"), objfile_name (objfile
));
1147 error (_("Cannot find executable file `%s' in dynamic"
1148 " linker's load module list"), objfile_name (objfile
));
1150 case TLS_NOT_ALLOCATED_YET_ERROR
:
1151 if (objfile_is_library
)
1152 error (_("The inferior has not yet allocated storage for"
1153 " thread-local variables in\n"
1154 "the shared library `%s'\n"
1156 objfile_name (objfile
), target_pid_to_str (ptid
));
1158 error (_("The inferior has not yet allocated storage for"
1159 " thread-local variables in\n"
1160 "the executable `%s'\n"
1162 objfile_name (objfile
), target_pid_to_str (ptid
));
1164 case TLS_GENERIC_ERROR
:
1165 if (objfile_is_library
)
1166 error (_("Cannot find thread-local storage for %s, "
1167 "shared library %s:\n%s"),
1168 target_pid_to_str (ptid
),
1169 objfile_name (objfile
), ex
.message
);
1171 error (_("Cannot find thread-local storage for %s, "
1172 "executable file %s:\n%s"),
1173 target_pid_to_str (ptid
),
1174 objfile_name (objfile
), ex
.message
);
1177 throw_exception (ex
);
1182 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1183 TLS is an ABI-specific thing. But we don't do that yet. */
1185 error (_("Cannot find thread-local variables on this target"));
1191 target_xfer_error_to_string (enum target_xfer_error err
)
1193 #define CASE(X) case X: return #X
1196 CASE(TARGET_XFER_E_IO
);
1197 CASE(TARGET_XFER_E_UNAVAILABLE
);
1206 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1208 /* target_read_string -- read a null terminated string, up to LEN bytes,
1209 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1210 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1211 is responsible for freeing it. Return the number of bytes successfully
1215 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1217 int tlen
, offset
, i
;
1221 int buffer_allocated
;
1223 unsigned int nbytes_read
= 0;
1225 gdb_assert (string
);
1227 /* Small for testing. */
1228 buffer_allocated
= 4;
1229 buffer
= xmalloc (buffer_allocated
);
1234 tlen
= MIN (len
, 4 - (memaddr
& 3));
1235 offset
= memaddr
& 3;
1237 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1240 /* The transfer request might have crossed the boundary to an
1241 unallocated region of memory. Retry the transfer, requesting
1245 errcode
= target_read_memory (memaddr
, buf
, 1);
1250 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1254 bytes
= bufptr
- buffer
;
1255 buffer_allocated
*= 2;
1256 buffer
= xrealloc (buffer
, buffer_allocated
);
1257 bufptr
= buffer
+ bytes
;
1260 for (i
= 0; i
< tlen
; i
++)
1262 *bufptr
++ = buf
[i
+ offset
];
1263 if (buf
[i
+ offset
] == '\000')
1265 nbytes_read
+= i
+ 1;
1272 nbytes_read
+= tlen
;
1281 struct target_section_table
*
1282 target_get_section_table (struct target_ops
*target
)
1284 struct target_ops
*t
;
1287 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1289 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1290 if (t
->to_get_section_table
!= NULL
)
1291 return (*t
->to_get_section_table
) (t
);
1296 /* Find a section containing ADDR. */
1298 struct target_section
*
1299 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1301 struct target_section_table
*table
= target_get_section_table (target
);
1302 struct target_section
*secp
;
1307 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1309 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1315 /* Read memory from the live target, even if currently inspecting a
1316 traceframe. The return is the same as that of target_read. */
1319 target_read_live_memory (enum target_object object
,
1320 ULONGEST memaddr
, gdb_byte
*myaddr
, LONGEST len
)
1323 struct cleanup
*cleanup
;
1325 /* Switch momentarily out of tfind mode so to access live memory.
1326 Note that this must not clear global state, such as the frame
1327 cache, which must still remain valid for the previous traceframe.
1328 We may be _building_ the frame cache at this point. */
1329 cleanup
= make_cleanup_restore_traceframe_number ();
1330 set_traceframe_number (-1);
1332 ret
= target_read (current_target
.beneath
, object
, NULL
,
1333 myaddr
, memaddr
, len
);
1335 do_cleanups (cleanup
);
1339 /* Using the set of read-only target sections of OPS, read live
1340 read-only memory. Note that the actual reads start from the
1341 top-most target again.
1343 For interface/parameters/return description see target.h,
1347 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1348 enum target_object object
,
1349 gdb_byte
*readbuf
, ULONGEST memaddr
,
1352 struct target_section
*secp
;
1353 struct target_section_table
*table
;
1355 secp
= target_section_by_addr (ops
, memaddr
);
1357 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1358 secp
->the_bfd_section
)
1361 struct target_section
*p
;
1362 ULONGEST memend
= memaddr
+ len
;
1364 table
= target_get_section_table (ops
);
1366 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1368 if (memaddr
>= p
->addr
)
1370 if (memend
<= p
->endaddr
)
1372 /* Entire transfer is within this section. */
1373 return target_read_live_memory (object
, memaddr
,
1376 else if (memaddr
>= p
->endaddr
)
1378 /* This section ends before the transfer starts. */
1383 /* This section overlaps the transfer. Just do half. */
1384 len
= p
->endaddr
- memaddr
;
1385 return target_read_live_memory (object
, memaddr
,
1395 /* Read memory from more than one valid target. A core file, for
1396 instance, could have some of memory but delegate other bits to
1397 the target below it. So, we must manually try all targets. */
1400 raw_memory_xfer_partial (struct target_ops
*ops
, void *readbuf
,
1401 const void *writebuf
, ULONGEST memaddr
, LONGEST len
)
1407 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1408 readbuf
, writebuf
, memaddr
, len
);
1412 /* We want to continue past core files to executables, but not
1413 past a running target's memory. */
1414 if (ops
->to_has_all_memory (ops
))
1419 while (ops
!= NULL
);
1424 /* Perform a partial memory transfer.
1425 For docs see target.h, to_xfer_partial. */
1428 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1429 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1434 struct mem_region
*region
;
1435 struct inferior
*inf
;
1437 /* For accesses to unmapped overlay sections, read directly from
1438 files. Must do this first, as MEMADDR may need adjustment. */
1439 if (readbuf
!= NULL
&& overlay_debugging
)
1441 struct obj_section
*section
= find_pc_overlay (memaddr
);
1443 if (pc_in_unmapped_range (memaddr
, section
))
1445 struct target_section_table
*table
1446 = target_get_section_table (ops
);
1447 const char *section_name
= section
->the_bfd_section
->name
;
1449 memaddr
= overlay_mapped_address (memaddr
, section
);
1450 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1453 table
->sections_end
,
1458 /* Try the executable files, if "trust-readonly-sections" is set. */
1459 if (readbuf
!= NULL
&& trust_readonly
)
1461 struct target_section
*secp
;
1462 struct target_section_table
*table
;
1464 secp
= target_section_by_addr (ops
, memaddr
);
1466 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1467 secp
->the_bfd_section
)
1470 table
= target_get_section_table (ops
);
1471 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1474 table
->sections_end
,
1479 /* If reading unavailable memory in the context of traceframes, and
1480 this address falls within a read-only section, fallback to
1481 reading from live memory. */
1482 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1484 VEC(mem_range_s
) *available
;
1486 /* If we fail to get the set of available memory, then the
1487 target does not support querying traceframe info, and so we
1488 attempt reading from the traceframe anyway (assuming the
1489 target implements the old QTro packet then). */
1490 if (traceframe_available_memory (&available
, memaddr
, len
))
1492 struct cleanup
*old_chain
;
1494 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1496 if (VEC_empty (mem_range_s
, available
)
1497 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1499 /* Don't read into the traceframe's available
1501 if (!VEC_empty (mem_range_s
, available
))
1503 LONGEST oldlen
= len
;
1505 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1506 gdb_assert (len
<= oldlen
);
1509 do_cleanups (old_chain
);
1511 /* This goes through the topmost target again. */
1512 res
= memory_xfer_live_readonly_partial (ops
, object
,
1513 readbuf
, memaddr
, len
);
1517 /* No use trying further, we know some memory starting
1518 at MEMADDR isn't available. */
1519 return TARGET_XFER_E_UNAVAILABLE
;
1522 /* Don't try to read more than how much is available, in
1523 case the target implements the deprecated QTro packet to
1524 cater for older GDBs (the target's knowledge of read-only
1525 sections may be outdated by now). */
1526 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1528 do_cleanups (old_chain
);
1532 /* Try GDB's internal data cache. */
1533 region
= lookup_mem_region (memaddr
);
1534 /* region->hi == 0 means there's no upper bound. */
1535 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1538 reg_len
= region
->hi
- memaddr
;
1540 switch (region
->attrib
.mode
)
1543 if (writebuf
!= NULL
)
1548 if (readbuf
!= NULL
)
1553 /* We only support writing to flash during "load" for now. */
1554 if (writebuf
!= NULL
)
1555 error (_("Writing to flash memory forbidden in this context"));
1562 if (!ptid_equal (inferior_ptid
, null_ptid
))
1563 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1568 /* The dcache reads whole cache lines; that doesn't play well
1569 with reading from a trace buffer, because reading outside of
1570 the collected memory range fails. */
1571 && get_traceframe_number () == -1
1572 && (region
->attrib
.cache
1573 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1574 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1576 DCACHE
*dcache
= target_dcache_get_or_init ();
1578 if (readbuf
!= NULL
)
1579 res
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1581 /* FIXME drow/2006-08-09: If we're going to preserve const
1582 correctness dcache_xfer_memory should take readbuf and
1584 res
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1592 /* If none of those methods found the memory we wanted, fall back
1593 to a target partial transfer. Normally a single call to
1594 to_xfer_partial is enough; if it doesn't recognize an object
1595 it will call the to_xfer_partial of the next target down.
1596 But for memory this won't do. Memory is the only target
1597 object which can be read from more than one valid target. */
1598 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
);
1600 /* Make sure the cache gets updated no matter what - if we are writing
1601 to the stack. Even if this write is not tagged as such, we still need
1602 to update the cache. */
1607 && target_dcache_init_p ()
1608 && !region
->attrib
.cache
1609 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1610 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1612 DCACHE
*dcache
= target_dcache_get ();
1614 dcache_update (dcache
, memaddr
, (void *) writebuf
, res
);
1617 /* If we still haven't got anything, return the last error. We
1622 /* Perform a partial memory transfer. For docs see target.h,
1626 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1627 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1632 /* Zero length requests are ok and require no work. */
1636 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1637 breakpoint insns, thus hiding out from higher layers whether
1638 there are software breakpoints inserted in the code stream. */
1639 if (readbuf
!= NULL
)
1641 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
);
1643 if (res
> 0 && !show_memory_breakpoints
)
1644 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1649 struct cleanup
*old_chain
;
1651 /* A large write request is likely to be partially satisfied
1652 by memory_xfer_partial_1. We will continually malloc
1653 and free a copy of the entire write request for breakpoint
1654 shadow handling even though we only end up writing a small
1655 subset of it. Cap writes to 4KB to mitigate this. */
1656 len
= min (4096, len
);
1658 buf
= xmalloc (len
);
1659 old_chain
= make_cleanup (xfree
, buf
);
1660 memcpy (buf
, writebuf
, len
);
1662 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1663 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
);
1665 do_cleanups (old_chain
);
1672 restore_show_memory_breakpoints (void *arg
)
1674 show_memory_breakpoints
= (uintptr_t) arg
;
1678 make_show_memory_breakpoints_cleanup (int show
)
1680 int current
= show_memory_breakpoints
;
1682 show_memory_breakpoints
= show
;
1683 return make_cleanup (restore_show_memory_breakpoints
,
1684 (void *) (uintptr_t) current
);
1687 /* For docs see target.h, to_xfer_partial. */
1690 target_xfer_partial (struct target_ops
*ops
,
1691 enum target_object object
, const char *annex
,
1692 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1693 ULONGEST offset
, LONGEST len
)
1697 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1699 if (writebuf
&& !may_write_memory
)
1700 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1701 core_addr_to_string_nz (offset
), plongest (len
));
1703 /* If this is a memory transfer, let the memory-specific code
1704 have a look at it instead. Memory transfers are more
1706 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1707 || object
== TARGET_OBJECT_CODE_MEMORY
)
1708 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1709 writebuf
, offset
, len
);
1710 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1712 /* Request the normal memory object from other layers. */
1713 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
);
1716 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1717 writebuf
, offset
, len
);
1721 const unsigned char *myaddr
= NULL
;
1723 fprintf_unfiltered (gdb_stdlog
,
1724 "%s:target_xfer_partial "
1725 "(%d, %s, %s, %s, %s, %s) = %s",
1728 (annex
? annex
: "(null)"),
1729 host_address_to_string (readbuf
),
1730 host_address_to_string (writebuf
),
1731 core_addr_to_string_nz (offset
),
1732 plongest (len
), plongest (retval
));
1738 if (retval
> 0 && myaddr
!= NULL
)
1742 fputs_unfiltered (", bytes =", gdb_stdlog
);
1743 for (i
= 0; i
< retval
; i
++)
1745 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1747 if (targetdebug
< 2 && i
> 0)
1749 fprintf_unfiltered (gdb_stdlog
, " ...");
1752 fprintf_unfiltered (gdb_stdlog
, "\n");
1755 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1759 fputc_unfiltered ('\n', gdb_stdlog
);
1764 /* Read LEN bytes of target memory at address MEMADDR, placing the
1765 results in GDB's memory at MYADDR. Returns either 0 for success or
1766 a target_xfer_error value if any error occurs.
1768 If an error occurs, no guarantee is made about the contents of the data at
1769 MYADDR. In particular, the caller should not depend upon partial reads
1770 filling the buffer with good data. There is no way for the caller to know
1771 how much good data might have been transfered anyway. Callers that can
1772 deal with partial reads should call target_read (which will retry until
1773 it makes no progress, and then return how much was transferred). */
1776 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1778 /* Dispatch to the topmost target, not the flattened current_target.
1779 Memory accesses check target->to_has_(all_)memory, and the
1780 flattened target doesn't inherit those. */
1781 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1782 myaddr
, memaddr
, len
) == len
)
1785 return TARGET_XFER_E_IO
;
1788 /* Like target_read_memory, but specify explicitly that this is a read
1789 from the target's raw memory. That is, this read bypasses the
1790 dcache, breakpoint shadowing, etc. */
1793 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1795 /* See comment in target_read_memory about why the request starts at
1796 current_target.beneath. */
1797 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1798 myaddr
, memaddr
, len
) == len
)
1801 return TARGET_XFER_E_IO
;
1804 /* Like target_read_memory, but specify explicitly that this is a read from
1805 the target's stack. This may trigger different cache behavior. */
1808 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1810 /* See comment in target_read_memory about why the request starts at
1811 current_target.beneath. */
1812 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1813 myaddr
, memaddr
, len
) == len
)
1816 return TARGET_XFER_E_IO
;
1819 /* Like target_read_memory, but specify explicitly that this is a read from
1820 the target's code. This may trigger different cache behavior. */
1823 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1825 /* See comment in target_read_memory about why the request starts at
1826 current_target.beneath. */
1827 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1828 myaddr
, memaddr
, len
) == len
)
1831 return TARGET_XFER_E_IO
;
1834 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1835 Returns either 0 for success or a target_xfer_error value if any
1836 error occurs. If an error occurs, no guarantee is made about how
1837 much data got written. Callers that can deal with partial writes
1838 should call target_write. */
1841 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1843 /* See comment in target_read_memory about why the request starts at
1844 current_target.beneath. */
1845 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1846 myaddr
, memaddr
, len
) == len
)
1849 return TARGET_XFER_E_IO
;
1852 /* Write LEN bytes from MYADDR to target raw memory at address
1853 MEMADDR. Returns either 0 for success or a target_xfer_error value
1854 if any error occurs. If an error occurs, no guarantee is made
1855 about how much data got written. Callers that can deal with
1856 partial writes should call target_write. */
1859 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1861 /* See comment in target_read_memory about why the request starts at
1862 current_target.beneath. */
1863 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1864 myaddr
, memaddr
, len
) == len
)
1867 return TARGET_XFER_E_IO
;
1870 /* Fetch the target's memory map. */
1873 target_memory_map (void)
1875 VEC(mem_region_s
) *result
;
1876 struct mem_region
*last_one
, *this_one
;
1878 struct target_ops
*t
;
1881 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1883 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1884 if (t
->to_memory_map
!= NULL
)
1890 result
= t
->to_memory_map (t
);
1894 qsort (VEC_address (mem_region_s
, result
),
1895 VEC_length (mem_region_s
, result
),
1896 sizeof (struct mem_region
), mem_region_cmp
);
1898 /* Check that regions do not overlap. Simultaneously assign
1899 a numbering for the "mem" commands to use to refer to
1902 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1904 this_one
->number
= ix
;
1906 if (last_one
&& last_one
->hi
> this_one
->lo
)
1908 warning (_("Overlapping regions in memory map: ignoring"));
1909 VEC_free (mem_region_s
, result
);
1912 last_one
= this_one
;
1919 target_flash_erase (ULONGEST address
, LONGEST length
)
1921 struct target_ops
*t
;
1923 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1924 if (t
->to_flash_erase
!= NULL
)
1927 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1928 hex_string (address
), phex (length
, 0));
1929 t
->to_flash_erase (t
, address
, length
);
1937 target_flash_done (void)
1939 struct target_ops
*t
;
1941 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1942 if (t
->to_flash_done
!= NULL
)
1945 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1946 t
->to_flash_done (t
);
1954 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1955 struct cmd_list_element
*c
, const char *value
)
1957 fprintf_filtered (file
,
1958 _("Mode for reading from readonly sections is %s.\n"),
1962 /* More generic transfers. */
1965 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1966 const char *annex
, gdb_byte
*readbuf
,
1967 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1969 if (object
== TARGET_OBJECT_MEMORY
1970 && ops
->deprecated_xfer_memory
!= NULL
)
1971 /* If available, fall back to the target's
1972 "deprecated_xfer_memory" method. */
1977 if (writebuf
!= NULL
)
1979 void *buffer
= xmalloc (len
);
1980 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1982 memcpy (buffer
, writebuf
, len
);
1983 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1984 1/*write*/, NULL
, ops
);
1985 do_cleanups (cleanup
);
1987 if (readbuf
!= NULL
)
1988 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1989 0/*read*/, NULL
, ops
);
1992 else if (xfered
== 0 && errno
== 0)
1993 /* "deprecated_xfer_memory" uses 0, cross checked against
1994 ERRNO as one indication of an error. */
1999 else if (ops
->beneath
!= NULL
)
2000 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
2001 readbuf
, writebuf
, offset
, len
);
2006 /* The xfer_partial handler for the topmost target. Unlike the default,
2007 it does not need to handle memory specially; it just passes all
2008 requests down the stack. */
2011 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
2012 const char *annex
, gdb_byte
*readbuf
,
2013 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
2015 if (ops
->beneath
!= NULL
)
2016 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
2017 readbuf
, writebuf
, offset
, len
);
2022 /* Target vector read/write partial wrapper functions. */
2025 target_read_partial (struct target_ops
*ops
,
2026 enum target_object object
,
2027 const char *annex
, gdb_byte
*buf
,
2028 ULONGEST offset
, LONGEST len
)
2030 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
2034 target_write_partial (struct target_ops
*ops
,
2035 enum target_object object
,
2036 const char *annex
, const gdb_byte
*buf
,
2037 ULONGEST offset
, LONGEST len
)
2039 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
2042 /* Wrappers to perform the full transfer. */
2044 /* For docs on target_read see target.h. */
2047 target_read (struct target_ops
*ops
,
2048 enum target_object object
,
2049 const char *annex
, gdb_byte
*buf
,
2050 ULONGEST offset
, LONGEST len
)
2054 while (xfered
< len
)
2056 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
2057 (gdb_byte
*) buf
+ xfered
,
2058 offset
+ xfered
, len
- xfered
);
2060 /* Call an observer, notifying them of the xfer progress? */
2071 /* Assuming that the entire [begin, end) range of memory cannot be
2072 read, try to read whatever subrange is possible to read.
2074 The function returns, in RESULT, either zero or one memory block.
2075 If there's a readable subrange at the beginning, it is completely
2076 read and returned. Any further readable subrange will not be read.
2077 Otherwise, if there's a readable subrange at the end, it will be
2078 completely read and returned. Any readable subranges before it
2079 (obviously, not starting at the beginning), will be ignored. In
2080 other cases -- either no readable subrange, or readable subrange(s)
2081 that is neither at the beginning, or end, nothing is returned.
2083 The purpose of this function is to handle a read across a boundary
2084 of accessible memory in a case when memory map is not available.
2085 The above restrictions are fine for this case, but will give
2086 incorrect results if the memory is 'patchy'. However, supporting
2087 'patchy' memory would require trying to read every single byte,
2088 and it seems unacceptable solution. Explicit memory map is
2089 recommended for this case -- and target_read_memory_robust will
2090 take care of reading multiple ranges then. */
2093 read_whatever_is_readable (struct target_ops
*ops
,
2094 ULONGEST begin
, ULONGEST end
,
2095 VEC(memory_read_result_s
) **result
)
2097 gdb_byte
*buf
= xmalloc (end
- begin
);
2098 ULONGEST current_begin
= begin
;
2099 ULONGEST current_end
= end
;
2101 memory_read_result_s r
;
2103 /* If we previously failed to read 1 byte, nothing can be done here. */
2104 if (end
- begin
<= 1)
2110 /* Check that either first or the last byte is readable, and give up
2111 if not. This heuristic is meant to permit reading accessible memory
2112 at the boundary of accessible region. */
2113 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2114 buf
, begin
, 1) == 1)
2119 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2120 buf
+ (end
-begin
) - 1, end
- 1, 1) == 1)
2131 /* Loop invariant is that the [current_begin, current_end) was previously
2132 found to be not readable as a whole.
2134 Note loop condition -- if the range has 1 byte, we can't divide the range
2135 so there's no point trying further. */
2136 while (current_end
- current_begin
> 1)
2138 ULONGEST first_half_begin
, first_half_end
;
2139 ULONGEST second_half_begin
, second_half_end
;
2141 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2145 first_half_begin
= current_begin
;
2146 first_half_end
= middle
;
2147 second_half_begin
= middle
;
2148 second_half_end
= current_end
;
2152 first_half_begin
= middle
;
2153 first_half_end
= current_end
;
2154 second_half_begin
= current_begin
;
2155 second_half_end
= middle
;
2158 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2159 buf
+ (first_half_begin
- begin
),
2161 first_half_end
- first_half_begin
);
2163 if (xfer
== first_half_end
- first_half_begin
)
2165 /* This half reads up fine. So, the error must be in the
2167 current_begin
= second_half_begin
;
2168 current_end
= second_half_end
;
2172 /* This half is not readable. Because we've tried one byte, we
2173 know some part of this half if actually redable. Go to the next
2174 iteration to divide again and try to read.
2176 We don't handle the other half, because this function only tries
2177 to read a single readable subrange. */
2178 current_begin
= first_half_begin
;
2179 current_end
= first_half_end
;
2185 /* The [begin, current_begin) range has been read. */
2187 r
.end
= current_begin
;
2192 /* The [current_end, end) range has been read. */
2193 LONGEST rlen
= end
- current_end
;
2195 r
.data
= xmalloc (rlen
);
2196 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2197 r
.begin
= current_end
;
2201 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2205 free_memory_read_result_vector (void *x
)
2207 VEC(memory_read_result_s
) *v
= x
;
2208 memory_read_result_s
*current
;
2211 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2213 xfree (current
->data
);
2215 VEC_free (memory_read_result_s
, v
);
2218 VEC(memory_read_result_s
) *
2219 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2221 VEC(memory_read_result_s
) *result
= 0;
2224 while (xfered
< len
)
2226 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2229 /* If there is no explicit region, a fake one should be created. */
2230 gdb_assert (region
);
2232 if (region
->hi
== 0)
2233 rlen
= len
- xfered
;
2235 rlen
= region
->hi
- offset
;
2237 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2239 /* Cannot read this region. Note that we can end up here only
2240 if the region is explicitly marked inaccessible, or
2241 'inaccessible-by-default' is in effect. */
2246 LONGEST to_read
= min (len
- xfered
, rlen
);
2247 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2249 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2250 (gdb_byte
*) buffer
,
2251 offset
+ xfered
, to_read
);
2252 /* Call an observer, notifying them of the xfer progress? */
2255 /* Got an error reading full chunk. See if maybe we can read
2258 read_whatever_is_readable (ops
, offset
+ xfered
,
2259 offset
+ xfered
+ to_read
, &result
);
2264 struct memory_read_result r
;
2266 r
.begin
= offset
+ xfered
;
2267 r
.end
= r
.begin
+ xfer
;
2268 VEC_safe_push (memory_read_result_s
, result
, &r
);
2278 /* An alternative to target_write with progress callbacks. */
2281 target_write_with_progress (struct target_ops
*ops
,
2282 enum target_object object
,
2283 const char *annex
, const gdb_byte
*buf
,
2284 ULONGEST offset
, LONGEST len
,
2285 void (*progress
) (ULONGEST
, void *), void *baton
)
2289 /* Give the progress callback a chance to set up. */
2291 (*progress
) (0, baton
);
2293 while (xfered
< len
)
2295 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
2296 (gdb_byte
*) buf
+ xfered
,
2297 offset
+ xfered
, len
- xfered
);
2305 (*progress
) (xfer
, baton
);
2313 /* For docs on target_write see target.h. */
2316 target_write (struct target_ops
*ops
,
2317 enum target_object object
,
2318 const char *annex
, const gdb_byte
*buf
,
2319 ULONGEST offset
, LONGEST len
)
2321 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2325 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2326 the size of the transferred data. PADDING additional bytes are
2327 available in *BUF_P. This is a helper function for
2328 target_read_alloc; see the declaration of that function for more
2332 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2333 const char *annex
, gdb_byte
**buf_p
, int padding
)
2335 size_t buf_alloc
, buf_pos
;
2339 /* This function does not have a length parameter; it reads the
2340 entire OBJECT). Also, it doesn't support objects fetched partly
2341 from one target and partly from another (in a different stratum,
2342 e.g. a core file and an executable). Both reasons make it
2343 unsuitable for reading memory. */
2344 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2346 /* Start by reading up to 4K at a time. The target will throttle
2347 this number down if necessary. */
2349 buf
= xmalloc (buf_alloc
);
2353 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2354 buf_pos
, buf_alloc
- buf_pos
- padding
);
2357 /* An error occurred. */
2363 /* Read all there was. */
2373 /* If the buffer is filling up, expand it. */
2374 if (buf_alloc
< buf_pos
* 2)
2377 buf
= xrealloc (buf
, buf_alloc
);
2384 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2385 the size of the transferred data. See the declaration in "target.h"
2386 function for more information about the return value. */
2389 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2390 const char *annex
, gdb_byte
**buf_p
)
2392 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2395 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2396 returned as a string, allocated using xmalloc. If an error occurs
2397 or the transfer is unsupported, NULL is returned. Empty objects
2398 are returned as allocated but empty strings. A warning is issued
2399 if the result contains any embedded NUL bytes. */
2402 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2407 LONGEST i
, transferred
;
2409 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2410 bufstr
= (char *) buffer
;
2412 if (transferred
< 0)
2415 if (transferred
== 0)
2416 return xstrdup ("");
2418 bufstr
[transferred
] = 0;
2420 /* Check for embedded NUL bytes; but allow trailing NULs. */
2421 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2424 warning (_("target object %d, annex %s, "
2425 "contained unexpected null characters"),
2426 (int) object
, annex
? annex
: "(none)");
2433 /* Memory transfer methods. */
2436 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2439 /* This method is used to read from an alternate, non-current
2440 target. This read must bypass the overlay support (as symbols
2441 don't match this target), and GDB's internal cache (wrong cache
2442 for this target). */
2443 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2445 memory_error (TARGET_XFER_E_IO
, addr
);
2449 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2450 int len
, enum bfd_endian byte_order
)
2452 gdb_byte buf
[sizeof (ULONGEST
)];
2454 gdb_assert (len
<= sizeof (buf
));
2455 get_target_memory (ops
, addr
, buf
, len
);
2456 return extract_unsigned_integer (buf
, len
, byte_order
);
2460 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2461 struct bp_target_info
*bp_tgt
)
2463 if (!may_insert_breakpoints
)
2465 warning (_("May not insert breakpoints"));
2469 return (*current_target
.to_insert_breakpoint
) (gdbarch
, bp_tgt
);
2473 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2474 struct bp_target_info
*bp_tgt
)
2476 /* This is kind of a weird case to handle, but the permission might
2477 have been changed after breakpoints were inserted - in which case
2478 we should just take the user literally and assume that any
2479 breakpoints should be left in place. */
2480 if (!may_insert_breakpoints
)
2482 warning (_("May not remove breakpoints"));
2486 return (*current_target
.to_remove_breakpoint
) (gdbarch
, bp_tgt
);
2490 target_info (char *args
, int from_tty
)
2492 struct target_ops
*t
;
2493 int has_all_mem
= 0;
2495 if (symfile_objfile
!= NULL
)
2496 printf_unfiltered (_("Symbols from \"%s\".\n"),
2497 objfile_name (symfile_objfile
));
2499 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2501 if (!(*t
->to_has_memory
) (t
))
2504 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2507 printf_unfiltered (_("\tWhile running this, "
2508 "GDB does not access memory from...\n"));
2509 printf_unfiltered ("%s:\n", t
->to_longname
);
2510 (t
->to_files_info
) (t
);
2511 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2515 /* This function is called before any new inferior is created, e.g.
2516 by running a program, attaching, or connecting to a target.
2517 It cleans up any state from previous invocations which might
2518 change between runs. This is a subset of what target_preopen
2519 resets (things which might change between targets). */
2522 target_pre_inferior (int from_tty
)
2524 /* Clear out solib state. Otherwise the solib state of the previous
2525 inferior might have survived and is entirely wrong for the new
2526 target. This has been observed on GNU/Linux using glibc 2.3. How
2538 Cannot access memory at address 0xdeadbeef
2541 /* In some OSs, the shared library list is the same/global/shared
2542 across inferiors. If code is shared between processes, so are
2543 memory regions and features. */
2544 if (!gdbarch_has_global_solist (target_gdbarch ()))
2546 no_shared_libraries (NULL
, from_tty
);
2548 invalidate_target_mem_regions ();
2550 target_clear_description ();
2553 agent_capability_invalidate ();
2556 /* Callback for iterate_over_inferiors. Gets rid of the given
2560 dispose_inferior (struct inferior
*inf
, void *args
)
2562 struct thread_info
*thread
;
2564 thread
= any_thread_of_process (inf
->pid
);
2567 switch_to_thread (thread
->ptid
);
2569 /* Core inferiors actually should be detached, not killed. */
2570 if (target_has_execution
)
2573 target_detach (NULL
, 0);
2579 /* This is to be called by the open routine before it does
2583 target_preopen (int from_tty
)
2587 if (have_inferiors ())
2590 || !have_live_inferiors ()
2591 || query (_("A program is being debugged already. Kill it? ")))
2592 iterate_over_inferiors (dispose_inferior
, NULL
);
2594 error (_("Program not killed."));
2597 /* Calling target_kill may remove the target from the stack. But if
2598 it doesn't (which seems like a win for UDI), remove it now. */
2599 /* Leave the exec target, though. The user may be switching from a
2600 live process to a core of the same program. */
2601 pop_all_targets_above (file_stratum
);
2603 target_pre_inferior (from_tty
);
2606 /* Detach a target after doing deferred register stores. */
2609 target_detach (const char *args
, int from_tty
)
2611 struct target_ops
* t
;
2613 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2614 /* Don't remove global breakpoints here. They're removed on
2615 disconnection from the target. */
2618 /* If we're in breakpoints-always-inserted mode, have to remove
2619 them before detaching. */
2620 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2622 prepare_for_detach ();
2624 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2626 if (t
->to_detach
!= NULL
)
2628 t
->to_detach (t
, args
, from_tty
);
2630 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2636 internal_error (__FILE__
, __LINE__
, _("could not find a target to detach"));
2640 target_disconnect (char *args
, int from_tty
)
2642 struct target_ops
*t
;
2644 /* If we're in breakpoints-always-inserted mode or if breakpoints
2645 are global across processes, we have to remove them before
2647 remove_breakpoints ();
2649 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2650 if (t
->to_disconnect
!= NULL
)
2653 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2655 t
->to_disconnect (t
, args
, from_tty
);
2663 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2665 struct target_ops
*t
;
2667 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2669 if (t
->to_wait
!= NULL
)
2671 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2675 char *status_string
;
2676 char *options_string
;
2678 status_string
= target_waitstatus_to_string (status
);
2679 options_string
= target_options_to_string (options
);
2680 fprintf_unfiltered (gdb_stdlog
,
2681 "target_wait (%d, status, options={%s})"
2683 ptid_get_pid (ptid
), options_string
,
2684 ptid_get_pid (retval
), status_string
);
2685 xfree (status_string
);
2686 xfree (options_string
);
2697 target_pid_to_str (ptid_t ptid
)
2699 struct target_ops
*t
;
2701 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2703 if (t
->to_pid_to_str
!= NULL
)
2704 return (*t
->to_pid_to_str
) (t
, ptid
);
2707 return normal_pid_to_str (ptid
);
2711 target_thread_name (struct thread_info
*info
)
2713 struct target_ops
*t
;
2715 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2717 if (t
->to_thread_name
!= NULL
)
2718 return (*t
->to_thread_name
) (info
);
2725 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2727 struct target_ops
*t
;
2729 target_dcache_invalidate ();
2731 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2733 if (t
->to_resume
!= NULL
)
2735 t
->to_resume (t
, ptid
, step
, signal
);
2737 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2738 ptid_get_pid (ptid
),
2739 step
? "step" : "continue",
2740 gdb_signal_to_name (signal
));
2742 registers_changed_ptid (ptid
);
2743 set_executing (ptid
, 1);
2744 set_running (ptid
, 1);
2745 clear_inline_frame_state (ptid
);
2754 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2756 struct target_ops
*t
;
2758 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2760 if (t
->to_pass_signals
!= NULL
)
2766 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2769 for (i
= 0; i
< numsigs
; i
++)
2770 if (pass_signals
[i
])
2771 fprintf_unfiltered (gdb_stdlog
, " %s",
2772 gdb_signal_to_name (i
));
2774 fprintf_unfiltered (gdb_stdlog
, " })\n");
2777 (*t
->to_pass_signals
) (numsigs
, pass_signals
);
2784 target_program_signals (int numsigs
, unsigned char *program_signals
)
2786 struct target_ops
*t
;
2788 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2790 if (t
->to_program_signals
!= NULL
)
2796 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2799 for (i
= 0; i
< numsigs
; i
++)
2800 if (program_signals
[i
])
2801 fprintf_unfiltered (gdb_stdlog
, " %s",
2802 gdb_signal_to_name (i
));
2804 fprintf_unfiltered (gdb_stdlog
, " })\n");
2807 (*t
->to_program_signals
) (numsigs
, program_signals
);
2813 /* Look through the list of possible targets for a target that can
2817 target_follow_fork (int follow_child
, int detach_fork
)
2819 struct target_ops
*t
;
2821 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2823 if (t
->to_follow_fork
!= NULL
)
2825 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2828 fprintf_unfiltered (gdb_stdlog
,
2829 "target_follow_fork (%d, %d) = %d\n",
2830 follow_child
, detach_fork
, retval
);
2835 /* Some target returned a fork event, but did not know how to follow it. */
2836 internal_error (__FILE__
, __LINE__
,
2837 _("could not find a target to follow fork"));
2841 target_mourn_inferior (void)
2843 struct target_ops
*t
;
2845 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2847 if (t
->to_mourn_inferior
!= NULL
)
2849 t
->to_mourn_inferior (t
);
2851 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2853 /* We no longer need to keep handles on any of the object files.
2854 Make sure to release them to avoid unnecessarily locking any
2855 of them while we're not actually debugging. */
2856 bfd_cache_close_all ();
2862 internal_error (__FILE__
, __LINE__
,
2863 _("could not find a target to follow mourn inferior"));
2866 /* Look for a target which can describe architectural features, starting
2867 from TARGET. If we find one, return its description. */
2869 const struct target_desc
*
2870 target_read_description (struct target_ops
*target
)
2872 struct target_ops
*t
;
2874 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2875 if (t
->to_read_description
!= NULL
)
2877 const struct target_desc
*tdesc
;
2879 tdesc
= t
->to_read_description (t
);
2887 /* The default implementation of to_search_memory.
2888 This implements a basic search of memory, reading target memory and
2889 performing the search here (as opposed to performing the search in on the
2890 target side with, for example, gdbserver). */
2893 simple_search_memory (struct target_ops
*ops
,
2894 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2895 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2896 CORE_ADDR
*found_addrp
)
2898 /* NOTE: also defined in find.c testcase. */
2899 #define SEARCH_CHUNK_SIZE 16000
2900 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2901 /* Buffer to hold memory contents for searching. */
2902 gdb_byte
*search_buf
;
2903 unsigned search_buf_size
;
2904 struct cleanup
*old_cleanups
;
2906 search_buf_size
= chunk_size
+ pattern_len
- 1;
2908 /* No point in trying to allocate a buffer larger than the search space. */
2909 if (search_space_len
< search_buf_size
)
2910 search_buf_size
= search_space_len
;
2912 search_buf
= malloc (search_buf_size
);
2913 if (search_buf
== NULL
)
2914 error (_("Unable to allocate memory to perform the search."));
2915 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2917 /* Prime the search buffer. */
2919 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2920 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2922 warning (_("Unable to access %s bytes of target "
2923 "memory at %s, halting search."),
2924 pulongest (search_buf_size
), hex_string (start_addr
));
2925 do_cleanups (old_cleanups
);
2929 /* Perform the search.
2931 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2932 When we've scanned N bytes we copy the trailing bytes to the start and
2933 read in another N bytes. */
2935 while (search_space_len
>= pattern_len
)
2937 gdb_byte
*found_ptr
;
2938 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2940 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2941 pattern
, pattern_len
);
2943 if (found_ptr
!= NULL
)
2945 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2947 *found_addrp
= found_addr
;
2948 do_cleanups (old_cleanups
);
2952 /* Not found in this chunk, skip to next chunk. */
2954 /* Don't let search_space_len wrap here, it's unsigned. */
2955 if (search_space_len
>= chunk_size
)
2956 search_space_len
-= chunk_size
;
2958 search_space_len
= 0;
2960 if (search_space_len
>= pattern_len
)
2962 unsigned keep_len
= search_buf_size
- chunk_size
;
2963 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2966 /* Copy the trailing part of the previous iteration to the front
2967 of the buffer for the next iteration. */
2968 gdb_assert (keep_len
== pattern_len
- 1);
2969 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2971 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2973 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2974 search_buf
+ keep_len
, read_addr
,
2975 nr_to_read
) != nr_to_read
)
2977 warning (_("Unable to access %s bytes of target "
2978 "memory at %s, halting search."),
2979 plongest (nr_to_read
),
2980 hex_string (read_addr
));
2981 do_cleanups (old_cleanups
);
2985 start_addr
+= chunk_size
;
2991 do_cleanups (old_cleanups
);
2995 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2996 sequence of bytes in PATTERN with length PATTERN_LEN.
2998 The result is 1 if found, 0 if not found, and -1 if there was an error
2999 requiring halting of the search (e.g. memory read error).
3000 If the pattern is found the address is recorded in FOUND_ADDRP. */
3003 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
3004 const gdb_byte
*pattern
, ULONGEST pattern_len
,
3005 CORE_ADDR
*found_addrp
)
3007 struct target_ops
*t
;
3010 /* We don't use INHERIT to set current_target.to_search_memory,
3011 so we have to scan the target stack and handle targetdebug
3015 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
3016 hex_string (start_addr
));
3018 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3019 if (t
->to_search_memory
!= NULL
)
3024 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
3025 pattern
, pattern_len
, found_addrp
);
3029 /* If a special version of to_search_memory isn't available, use the
3031 found
= simple_search_memory (current_target
.beneath
,
3032 start_addr
, search_space_len
,
3033 pattern
, pattern_len
, found_addrp
);
3037 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
3042 /* Look through the currently pushed targets. If none of them will
3043 be able to restart the currently running process, issue an error
3047 target_require_runnable (void)
3049 struct target_ops
*t
;
3051 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3053 /* If this target knows how to create a new program, then
3054 assume we will still be able to after killing the current
3055 one. Either killing and mourning will not pop T, or else
3056 find_default_run_target will find it again. */
3057 if (t
->to_create_inferior
!= NULL
)
3060 /* Do not worry about thread_stratum targets that can not
3061 create inferiors. Assume they will be pushed again if
3062 necessary, and continue to the process_stratum. */
3063 if (t
->to_stratum
== thread_stratum
3064 || t
->to_stratum
== arch_stratum
)
3067 error (_("The \"%s\" target does not support \"run\". "
3068 "Try \"help target\" or \"continue\"."),
3072 /* This function is only called if the target is running. In that
3073 case there should have been a process_stratum target and it
3074 should either know how to create inferiors, or not... */
3075 internal_error (__FILE__
, __LINE__
, _("No targets found"));
3078 /* Look through the list of possible targets for a target that can
3079 execute a run or attach command without any other data. This is
3080 used to locate the default process stratum.
3082 If DO_MESG is not NULL, the result is always valid (error() is
3083 called for errors); else, return NULL on error. */
3085 static struct target_ops
*
3086 find_default_run_target (char *do_mesg
)
3088 struct target_ops
**t
;
3089 struct target_ops
*runable
= NULL
;
3094 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3097 if ((*t
)->to_can_run
&& target_can_run (*t
))
3107 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3116 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3118 struct target_ops
*t
;
3120 t
= find_default_run_target ("attach");
3121 (t
->to_attach
) (t
, args
, from_tty
);
3126 find_default_create_inferior (struct target_ops
*ops
,
3127 char *exec_file
, char *allargs
, char **env
,
3130 struct target_ops
*t
;
3132 t
= find_default_run_target ("run");
3133 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3138 find_default_can_async_p (void)
3140 struct target_ops
*t
;
3142 /* This may be called before the target is pushed on the stack;
3143 look for the default process stratum. If there's none, gdb isn't
3144 configured with a native debugger, and target remote isn't
3146 t
= find_default_run_target (NULL
);
3147 if (t
&& t
->to_can_async_p
)
3148 return (t
->to_can_async_p
) ();
3153 find_default_is_async_p (void)
3155 struct target_ops
*t
;
3157 /* This may be called before the target is pushed on the stack;
3158 look for the default process stratum. If there's none, gdb isn't
3159 configured with a native debugger, and target remote isn't
3161 t
= find_default_run_target (NULL
);
3162 if (t
&& t
->to_is_async_p
)
3163 return (t
->to_is_async_p
) ();
3168 find_default_supports_non_stop (void)
3170 struct target_ops
*t
;
3172 t
= find_default_run_target (NULL
);
3173 if (t
&& t
->to_supports_non_stop
)
3174 return (t
->to_supports_non_stop
) ();
3179 target_supports_non_stop (void)
3181 struct target_ops
*t
;
3183 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3184 if (t
->to_supports_non_stop
)
3185 return t
->to_supports_non_stop ();
3190 /* Implement the "info proc" command. */
3193 target_info_proc (char *args
, enum info_proc_what what
)
3195 struct target_ops
*t
;
3197 /* If we're already connected to something that can get us OS
3198 related data, use it. Otherwise, try using the native
3200 if (current_target
.to_stratum
>= process_stratum
)
3201 t
= current_target
.beneath
;
3203 t
= find_default_run_target (NULL
);
3205 for (; t
!= NULL
; t
= t
->beneath
)
3207 if (t
->to_info_proc
!= NULL
)
3209 t
->to_info_proc (t
, args
, what
);
3212 fprintf_unfiltered (gdb_stdlog
,
3213 "target_info_proc (\"%s\", %d)\n", args
, what
);
3223 find_default_supports_disable_randomization (void)
3225 struct target_ops
*t
;
3227 t
= find_default_run_target (NULL
);
3228 if (t
&& t
->to_supports_disable_randomization
)
3229 return (t
->to_supports_disable_randomization
) ();
3234 target_supports_disable_randomization (void)
3236 struct target_ops
*t
;
3238 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3239 if (t
->to_supports_disable_randomization
)
3240 return t
->to_supports_disable_randomization ();
3246 target_get_osdata (const char *type
)
3248 struct target_ops
*t
;
3250 /* If we're already connected to something that can get us OS
3251 related data, use it. Otherwise, try using the native
3253 if (current_target
.to_stratum
>= process_stratum
)
3254 t
= current_target
.beneath
;
3256 t
= find_default_run_target ("get OS data");
3261 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3264 /* Determine the current address space of thread PTID. */
3266 struct address_space
*
3267 target_thread_address_space (ptid_t ptid
)
3269 struct address_space
*aspace
;
3270 struct inferior
*inf
;
3271 struct target_ops
*t
;
3273 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3275 if (t
->to_thread_address_space
!= NULL
)
3277 aspace
= t
->to_thread_address_space (t
, ptid
);
3278 gdb_assert (aspace
);
3281 fprintf_unfiltered (gdb_stdlog
,
3282 "target_thread_address_space (%s) = %d\n",
3283 target_pid_to_str (ptid
),
3284 address_space_num (aspace
));
3289 /* Fall-back to the "main" address space of the inferior. */
3290 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3292 if (inf
== NULL
|| inf
->aspace
== NULL
)
3293 internal_error (__FILE__
, __LINE__
,
3294 _("Can't determine the current "
3295 "address space of thread %s\n"),
3296 target_pid_to_str (ptid
));
3302 /* Target file operations. */
3304 static struct target_ops
*
3305 default_fileio_target (void)
3307 /* If we're already connected to something that can perform
3308 file I/O, use it. Otherwise, try using the native target. */
3309 if (current_target
.to_stratum
>= process_stratum
)
3310 return current_target
.beneath
;
3312 return find_default_run_target ("file I/O");
3315 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3316 target file descriptor, or -1 if an error occurs (and set
3319 target_fileio_open (const char *filename
, int flags
, int mode
,
3322 struct target_ops
*t
;
3324 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3326 if (t
->to_fileio_open
!= NULL
)
3328 int fd
= t
->to_fileio_open (filename
, flags
, mode
, target_errno
);
3331 fprintf_unfiltered (gdb_stdlog
,
3332 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3333 filename
, flags
, mode
,
3334 fd
, fd
!= -1 ? 0 : *target_errno
);
3339 *target_errno
= FILEIO_ENOSYS
;
3343 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3344 Return the number of bytes written, or -1 if an error occurs
3345 (and set *TARGET_ERRNO). */
3347 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3348 ULONGEST offset
, int *target_errno
)
3350 struct target_ops
*t
;
3352 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3354 if (t
->to_fileio_pwrite
!= NULL
)
3356 int ret
= t
->to_fileio_pwrite (fd
, write_buf
, len
, offset
,
3360 fprintf_unfiltered (gdb_stdlog
,
3361 "target_fileio_pwrite (%d,...,%d,%s) "
3363 fd
, len
, pulongest (offset
),
3364 ret
, ret
!= -1 ? 0 : *target_errno
);
3369 *target_errno
= FILEIO_ENOSYS
;
3373 /* Read up to LEN bytes FD on the target into READ_BUF.
3374 Return the number of bytes read, or -1 if an error occurs
3375 (and set *TARGET_ERRNO). */
3377 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3378 ULONGEST offset
, int *target_errno
)
3380 struct target_ops
*t
;
3382 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3384 if (t
->to_fileio_pread
!= NULL
)
3386 int ret
= t
->to_fileio_pread (fd
, read_buf
, len
, offset
,
3390 fprintf_unfiltered (gdb_stdlog
,
3391 "target_fileio_pread (%d,...,%d,%s) "
3393 fd
, len
, pulongest (offset
),
3394 ret
, ret
!= -1 ? 0 : *target_errno
);
3399 *target_errno
= FILEIO_ENOSYS
;
3403 /* Close FD on the target. Return 0, or -1 if an error occurs
3404 (and set *TARGET_ERRNO). */
3406 target_fileio_close (int fd
, int *target_errno
)
3408 struct target_ops
*t
;
3410 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3412 if (t
->to_fileio_close
!= NULL
)
3414 int ret
= t
->to_fileio_close (fd
, target_errno
);
3417 fprintf_unfiltered (gdb_stdlog
,
3418 "target_fileio_close (%d) = %d (%d)\n",
3419 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3424 *target_errno
= FILEIO_ENOSYS
;
3428 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3429 occurs (and set *TARGET_ERRNO). */
3431 target_fileio_unlink (const char *filename
, int *target_errno
)
3433 struct target_ops
*t
;
3435 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3437 if (t
->to_fileio_unlink
!= NULL
)
3439 int ret
= t
->to_fileio_unlink (filename
, target_errno
);
3442 fprintf_unfiltered (gdb_stdlog
,
3443 "target_fileio_unlink (%s) = %d (%d)\n",
3444 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3449 *target_errno
= FILEIO_ENOSYS
;
3453 /* Read value of symbolic link FILENAME on the target. Return a
3454 null-terminated string allocated via xmalloc, or NULL if an error
3455 occurs (and set *TARGET_ERRNO). */
3457 target_fileio_readlink (const char *filename
, int *target_errno
)
3459 struct target_ops
*t
;
3461 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3463 if (t
->to_fileio_readlink
!= NULL
)
3465 char *ret
= t
->to_fileio_readlink (filename
, target_errno
);
3468 fprintf_unfiltered (gdb_stdlog
,
3469 "target_fileio_readlink (%s) = %s (%d)\n",
3470 filename
, ret
? ret
: "(nil)",
3471 ret
? 0 : *target_errno
);
3476 *target_errno
= FILEIO_ENOSYS
;
3481 target_fileio_close_cleanup (void *opaque
)
3483 int fd
= *(int *) opaque
;
3486 target_fileio_close (fd
, &target_errno
);
3489 /* Read target file FILENAME. Store the result in *BUF_P and
3490 return the size of the transferred data. PADDING additional bytes are
3491 available in *BUF_P. This is a helper function for
3492 target_fileio_read_alloc; see the declaration of that function for more
3496 target_fileio_read_alloc_1 (const char *filename
,
3497 gdb_byte
**buf_p
, int padding
)
3499 struct cleanup
*close_cleanup
;
3500 size_t buf_alloc
, buf_pos
;
3506 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3510 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3512 /* Start by reading up to 4K at a time. The target will throttle
3513 this number down if necessary. */
3515 buf
= xmalloc (buf_alloc
);
3519 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3520 buf_alloc
- buf_pos
- padding
, buf_pos
,
3524 /* An error occurred. */
3525 do_cleanups (close_cleanup
);
3531 /* Read all there was. */
3532 do_cleanups (close_cleanup
);
3542 /* If the buffer is filling up, expand it. */
3543 if (buf_alloc
< buf_pos
* 2)
3546 buf
= xrealloc (buf
, buf_alloc
);
3553 /* Read target file FILENAME. Store the result in *BUF_P and return
3554 the size of the transferred data. See the declaration in "target.h"
3555 function for more information about the return value. */
3558 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3560 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3563 /* Read target file FILENAME. The result is NUL-terminated and
3564 returned as a string, allocated using xmalloc. If an error occurs
3565 or the transfer is unsupported, NULL is returned. Empty objects
3566 are returned as allocated but empty strings. A warning is issued
3567 if the result contains any embedded NUL bytes. */
3570 target_fileio_read_stralloc (const char *filename
)
3574 LONGEST i
, transferred
;
3576 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3577 bufstr
= (char *) buffer
;
3579 if (transferred
< 0)
3582 if (transferred
== 0)
3583 return xstrdup ("");
3585 bufstr
[transferred
] = 0;
3587 /* Check for embedded NUL bytes; but allow trailing NULs. */
3588 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3591 warning (_("target file %s "
3592 "contained unexpected null characters"),
3602 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3604 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3608 default_watchpoint_addr_within_range (struct target_ops
*target
,
3610 CORE_ADDR start
, int length
)
3612 return addr
>= start
&& addr
< start
+ length
;
3615 static struct gdbarch
*
3616 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3618 return target_gdbarch ();
3634 return_minus_one (void)
3646 * Find the next target down the stack from the specified target.
3650 find_target_beneath (struct target_ops
*t
)
3656 /* The inferior process has died. Long live the inferior! */
3659 generic_mourn_inferior (void)
3663 ptid
= inferior_ptid
;
3664 inferior_ptid
= null_ptid
;
3666 /* Mark breakpoints uninserted in case something tries to delete a
3667 breakpoint while we delete the inferior's threads (which would
3668 fail, since the inferior is long gone). */
3669 mark_breakpoints_out ();
3671 if (!ptid_equal (ptid
, null_ptid
))
3673 int pid
= ptid_get_pid (ptid
);
3674 exit_inferior (pid
);
3677 /* Note this wipes step-resume breakpoints, so needs to be done
3678 after exit_inferior, which ends up referencing the step-resume
3679 breakpoints through clear_thread_inferior_resources. */
3680 breakpoint_init_inferior (inf_exited
);
3682 registers_changed ();
3684 reopen_exec_file ();
3685 reinit_frame_cache ();
3687 if (deprecated_detach_hook
)
3688 deprecated_detach_hook ();
3691 /* Convert a normal process ID to a string. Returns the string in a
3695 normal_pid_to_str (ptid_t ptid
)
3697 static char buf
[32];
3699 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3704 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3706 return normal_pid_to_str (ptid
);
3709 /* Error-catcher for target_find_memory_regions. */
3711 dummy_find_memory_regions (find_memory_region_ftype ignore1
, void *ignore2
)
3713 error (_("Command not implemented for this target."));
3717 /* Error-catcher for target_make_corefile_notes. */
3719 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
3721 error (_("Command not implemented for this target."));
3725 /* Error-catcher for target_get_bookmark. */
3727 dummy_get_bookmark (char *ignore1
, int ignore2
)
3733 /* Error-catcher for target_goto_bookmark. */
3735 dummy_goto_bookmark (gdb_byte
*ignore
, int from_tty
)
3740 /* Set up the handful of non-empty slots needed by the dummy target
3744 init_dummy_target (void)
3746 dummy_target
.to_shortname
= "None";
3747 dummy_target
.to_longname
= "None";
3748 dummy_target
.to_doc
= "";
3749 dummy_target
.to_attach
= find_default_attach
;
3750 dummy_target
.to_detach
=
3751 (void (*)(struct target_ops
*, const char *, int))target_ignore
;
3752 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3753 dummy_target
.to_can_async_p
= find_default_can_async_p
;
3754 dummy_target
.to_is_async_p
= find_default_is_async_p
;
3755 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3756 dummy_target
.to_supports_disable_randomization
3757 = find_default_supports_disable_randomization
;
3758 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3759 dummy_target
.to_stratum
= dummy_stratum
;
3760 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
3761 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
3762 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
3763 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
3764 dummy_target
.to_xfer_partial
= default_xfer_partial
;
3765 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3766 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3767 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3768 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3769 dummy_target
.to_has_execution
3770 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3771 dummy_target
.to_stopped_by_watchpoint
= return_zero
;
3772 dummy_target
.to_stopped_data_address
=
3773 (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
;
3774 dummy_target
.to_magic
= OPS_MAGIC
;
3778 debug_to_open (char *args
, int from_tty
)
3780 debug_target
.to_open (args
, from_tty
);
3782 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3786 target_close (struct target_ops
*targ
)
3788 gdb_assert (!target_is_pushed (targ
));
3790 if (targ
->to_xclose
!= NULL
)
3791 targ
->to_xclose (targ
);
3792 else if (targ
->to_close
!= NULL
)
3796 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3800 target_attach (char *args
, int from_tty
)
3802 struct target_ops
*t
;
3804 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3806 if (t
->to_attach
!= NULL
)
3808 t
->to_attach (t
, args
, from_tty
);
3810 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3816 internal_error (__FILE__
, __LINE__
,
3817 _("could not find a target to attach"));
3821 target_thread_alive (ptid_t ptid
)
3823 struct target_ops
*t
;
3825 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3827 if (t
->to_thread_alive
!= NULL
)
3831 retval
= t
->to_thread_alive (t
, ptid
);
3833 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3834 ptid_get_pid (ptid
), retval
);
3844 target_find_new_threads (void)
3846 struct target_ops
*t
;
3848 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3850 if (t
->to_find_new_threads
!= NULL
)
3852 t
->to_find_new_threads (t
);
3854 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3862 target_stop (ptid_t ptid
)
3866 warning (_("May not interrupt or stop the target, ignoring attempt"));
3870 (*current_target
.to_stop
) (ptid
);
3874 debug_to_post_attach (int pid
)
3876 debug_target
.to_post_attach (pid
);
3878 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3881 /* Concatenate ELEM to LIST, a comma separate list, and return the
3882 result. The LIST incoming argument is released. */
3885 str_comma_list_concat_elem (char *list
, const char *elem
)
3888 return xstrdup (elem
);
3890 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3893 /* Helper for target_options_to_string. If OPT is present in
3894 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3895 Returns the new resulting string. OPT is removed from
3899 do_option (int *target_options
, char *ret
,
3900 int opt
, char *opt_str
)
3902 if ((*target_options
& opt
) != 0)
3904 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3905 *target_options
&= ~opt
;
3912 target_options_to_string (int target_options
)
3916 #define DO_TARG_OPTION(OPT) \
3917 ret = do_option (&target_options, ret, OPT, #OPT)
3919 DO_TARG_OPTION (TARGET_WNOHANG
);
3921 if (target_options
!= 0)
3922 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3930 debug_print_register (const char * func
,
3931 struct regcache
*regcache
, int regno
)
3933 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3935 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3936 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3937 && gdbarch_register_name (gdbarch
, regno
) != NULL
3938 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3939 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3940 gdbarch_register_name (gdbarch
, regno
));
3942 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3943 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3945 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3946 int i
, size
= register_size (gdbarch
, regno
);
3947 gdb_byte buf
[MAX_REGISTER_SIZE
];
3949 regcache_raw_collect (regcache
, regno
, buf
);
3950 fprintf_unfiltered (gdb_stdlog
, " = ");
3951 for (i
= 0; i
< size
; i
++)
3953 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3955 if (size
<= sizeof (LONGEST
))
3957 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3959 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3960 core_addr_to_string_nz (val
), plongest (val
));
3963 fprintf_unfiltered (gdb_stdlog
, "\n");
3967 target_fetch_registers (struct regcache
*regcache
, int regno
)
3969 struct target_ops
*t
;
3971 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3973 if (t
->to_fetch_registers
!= NULL
)
3975 t
->to_fetch_registers (t
, regcache
, regno
);
3977 debug_print_register ("target_fetch_registers", regcache
, regno
);
3984 target_store_registers (struct regcache
*regcache
, int regno
)
3986 struct target_ops
*t
;
3988 if (!may_write_registers
)
3989 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3991 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3993 if (t
->to_store_registers
!= NULL
)
3995 t
->to_store_registers (t
, regcache
, regno
);
3998 debug_print_register ("target_store_registers", regcache
, regno
);
4008 target_core_of_thread (ptid_t ptid
)
4010 struct target_ops
*t
;
4012 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4014 if (t
->to_core_of_thread
!= NULL
)
4016 int retval
= t
->to_core_of_thread (t
, ptid
);
4019 fprintf_unfiltered (gdb_stdlog
,
4020 "target_core_of_thread (%d) = %d\n",
4021 ptid_get_pid (ptid
), retval
);
4030 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
4032 struct target_ops
*t
;
4034 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4036 if (t
->to_verify_memory
!= NULL
)
4038 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
4041 fprintf_unfiltered (gdb_stdlog
,
4042 "target_verify_memory (%s, %s) = %d\n",
4043 paddress (target_gdbarch (), memaddr
),
4053 /* The documentation for this function is in its prototype declaration in
4057 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4059 struct target_ops
*t
;
4061 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4062 if (t
->to_insert_mask_watchpoint
!= NULL
)
4066 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
4069 fprintf_unfiltered (gdb_stdlog
, "\
4070 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
4071 core_addr_to_string (addr
),
4072 core_addr_to_string (mask
), rw
, ret
);
4080 /* The documentation for this function is in its prototype declaration in
4084 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4086 struct target_ops
*t
;
4088 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4089 if (t
->to_remove_mask_watchpoint
!= NULL
)
4093 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
4096 fprintf_unfiltered (gdb_stdlog
, "\
4097 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
4098 core_addr_to_string (addr
),
4099 core_addr_to_string (mask
), rw
, ret
);
4107 /* The documentation for this function is in its prototype declaration
4111 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4113 struct target_ops
*t
;
4115 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4116 if (t
->to_masked_watch_num_registers
!= NULL
)
4117 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4122 /* The documentation for this function is in its prototype declaration
4126 target_ranged_break_num_registers (void)
4128 struct target_ops
*t
;
4130 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4131 if (t
->to_ranged_break_num_registers
!= NULL
)
4132 return t
->to_ranged_break_num_registers (t
);
4140 target_supports_btrace (void)
4142 struct target_ops
*t
;
4144 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4145 if (t
->to_supports_btrace
!= NULL
)
4146 return t
->to_supports_btrace ();
4153 struct btrace_target_info
*
4154 target_enable_btrace (ptid_t ptid
)
4156 struct target_ops
*t
;
4158 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4159 if (t
->to_enable_btrace
!= NULL
)
4160 return t
->to_enable_btrace (ptid
);
4169 target_disable_btrace (struct btrace_target_info
*btinfo
)
4171 struct target_ops
*t
;
4173 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4174 if (t
->to_disable_btrace
!= NULL
)
4176 t
->to_disable_btrace (btinfo
);
4186 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4188 struct target_ops
*t
;
4190 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4191 if (t
->to_teardown_btrace
!= NULL
)
4193 t
->to_teardown_btrace (btinfo
);
4202 VEC (btrace_block_s
) *
4203 target_read_btrace (struct btrace_target_info
*btinfo
,
4204 enum btrace_read_type type
)
4206 struct target_ops
*t
;
4208 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4209 if (t
->to_read_btrace
!= NULL
)
4210 return t
->to_read_btrace (btinfo
, type
);
4219 target_stop_recording (void)
4221 struct target_ops
*t
;
4223 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4224 if (t
->to_stop_recording
!= NULL
)
4226 t
->to_stop_recording ();
4230 /* This is optional. */
4236 target_info_record (void)
4238 struct target_ops
*t
;
4240 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4241 if (t
->to_info_record
!= NULL
)
4243 t
->to_info_record ();
4253 target_save_record (const char *filename
)
4255 struct target_ops
*t
;
4257 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4258 if (t
->to_save_record
!= NULL
)
4260 t
->to_save_record (filename
);
4270 target_supports_delete_record (void)
4272 struct target_ops
*t
;
4274 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4275 if (t
->to_delete_record
!= NULL
)
4284 target_delete_record (void)
4286 struct target_ops
*t
;
4288 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4289 if (t
->to_delete_record
!= NULL
)
4291 t
->to_delete_record ();
4301 target_record_is_replaying (void)
4303 struct target_ops
*t
;
4305 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4306 if (t
->to_record_is_replaying
!= NULL
)
4307 return t
->to_record_is_replaying ();
4315 target_goto_record_begin (void)
4317 struct target_ops
*t
;
4319 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4320 if (t
->to_goto_record_begin
!= NULL
)
4322 t
->to_goto_record_begin ();
4332 target_goto_record_end (void)
4334 struct target_ops
*t
;
4336 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4337 if (t
->to_goto_record_end
!= NULL
)
4339 t
->to_goto_record_end ();
4349 target_goto_record (ULONGEST insn
)
4351 struct target_ops
*t
;
4353 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4354 if (t
->to_goto_record
!= NULL
)
4356 t
->to_goto_record (insn
);
4366 target_insn_history (int size
, int flags
)
4368 struct target_ops
*t
;
4370 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4371 if (t
->to_insn_history
!= NULL
)
4373 t
->to_insn_history (size
, flags
);
4383 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4385 struct target_ops
*t
;
4387 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4388 if (t
->to_insn_history_from
!= NULL
)
4390 t
->to_insn_history_from (from
, size
, flags
);
4400 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4402 struct target_ops
*t
;
4404 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4405 if (t
->to_insn_history_range
!= NULL
)
4407 t
->to_insn_history_range (begin
, end
, flags
);
4417 target_call_history (int size
, int flags
)
4419 struct target_ops
*t
;
4421 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4422 if (t
->to_call_history
!= NULL
)
4424 t
->to_call_history (size
, flags
);
4434 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4436 struct target_ops
*t
;
4438 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4439 if (t
->to_call_history_from
!= NULL
)
4441 t
->to_call_history_from (begin
, size
, flags
);
4451 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4453 struct target_ops
*t
;
4455 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4456 if (t
->to_call_history_range
!= NULL
)
4458 t
->to_call_history_range (begin
, end
, flags
);
4466 debug_to_prepare_to_store (struct regcache
*regcache
)
4468 debug_target
.to_prepare_to_store (regcache
);
4470 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4474 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4475 int write
, struct mem_attrib
*attrib
,
4476 struct target_ops
*target
)
4480 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4483 fprintf_unfiltered (gdb_stdlog
,
4484 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4485 paddress (target_gdbarch (), memaddr
), len
,
4486 write
? "write" : "read", retval
);
4492 fputs_unfiltered (", bytes =", gdb_stdlog
);
4493 for (i
= 0; i
< retval
; i
++)
4495 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4497 if (targetdebug
< 2 && i
> 0)
4499 fprintf_unfiltered (gdb_stdlog
, " ...");
4502 fprintf_unfiltered (gdb_stdlog
, "\n");
4505 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4509 fputc_unfiltered ('\n', gdb_stdlog
);
4515 debug_to_files_info (struct target_ops
*target
)
4517 debug_target
.to_files_info (target
);
4519 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4523 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
4524 struct bp_target_info
*bp_tgt
)
4528 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
4530 fprintf_unfiltered (gdb_stdlog
,
4531 "target_insert_breakpoint (%s, xxx) = %ld\n",
4532 core_addr_to_string (bp_tgt
->placed_address
),
4533 (unsigned long) retval
);
4538 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
4539 struct bp_target_info
*bp_tgt
)
4543 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
4545 fprintf_unfiltered (gdb_stdlog
,
4546 "target_remove_breakpoint (%s, xxx) = %ld\n",
4547 core_addr_to_string (bp_tgt
->placed_address
),
4548 (unsigned long) retval
);
4553 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
4557 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
4559 fprintf_unfiltered (gdb_stdlog
,
4560 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4561 (unsigned long) type
,
4562 (unsigned long) cnt
,
4563 (unsigned long) from_tty
,
4564 (unsigned long) retval
);
4569 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
4573 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
4575 fprintf_unfiltered (gdb_stdlog
,
4576 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4577 core_addr_to_string (addr
), (unsigned long) len
,
4578 core_addr_to_string (retval
));
4583 debug_to_can_accel_watchpoint_condition (CORE_ADDR addr
, int len
, int rw
,
4584 struct expression
*cond
)
4588 retval
= debug_target
.to_can_accel_watchpoint_condition (addr
, len
,
4591 fprintf_unfiltered (gdb_stdlog
,
4592 "target_can_accel_watchpoint_condition "
4593 "(%s, %d, %d, %s) = %ld\n",
4594 core_addr_to_string (addr
), len
, rw
,
4595 host_address_to_string (cond
), (unsigned long) retval
);
4600 debug_to_stopped_by_watchpoint (void)
4604 retval
= debug_target
.to_stopped_by_watchpoint ();
4606 fprintf_unfiltered (gdb_stdlog
,
4607 "target_stopped_by_watchpoint () = %ld\n",
4608 (unsigned long) retval
);
4613 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4617 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4619 fprintf_unfiltered (gdb_stdlog
,
4620 "target_stopped_data_address ([%s]) = %ld\n",
4621 core_addr_to_string (*addr
),
4622 (unsigned long)retval
);
4627 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4629 CORE_ADDR start
, int length
)
4633 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4636 fprintf_filtered (gdb_stdlog
,
4637 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4638 core_addr_to_string (addr
), core_addr_to_string (start
),
4644 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
4645 struct bp_target_info
*bp_tgt
)
4649 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
4651 fprintf_unfiltered (gdb_stdlog
,
4652 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4653 core_addr_to_string (bp_tgt
->placed_address
),
4654 (unsigned long) retval
);
4659 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
4660 struct bp_target_info
*bp_tgt
)
4664 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
4666 fprintf_unfiltered (gdb_stdlog
,
4667 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4668 core_addr_to_string (bp_tgt
->placed_address
),
4669 (unsigned long) retval
);
4674 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
4675 struct expression
*cond
)
4679 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
, cond
);
4681 fprintf_unfiltered (gdb_stdlog
,
4682 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4683 core_addr_to_string (addr
), len
, type
,
4684 host_address_to_string (cond
), (unsigned long) retval
);
4689 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
4690 struct expression
*cond
)
4694 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
, cond
);
4696 fprintf_unfiltered (gdb_stdlog
,
4697 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4698 core_addr_to_string (addr
), len
, type
,
4699 host_address_to_string (cond
), (unsigned long) retval
);
4704 debug_to_terminal_init (void)
4706 debug_target
.to_terminal_init ();
4708 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4712 debug_to_terminal_inferior (void)
4714 debug_target
.to_terminal_inferior ();
4716 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4720 debug_to_terminal_ours_for_output (void)
4722 debug_target
.to_terminal_ours_for_output ();
4724 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4728 debug_to_terminal_ours (void)
4730 debug_target
.to_terminal_ours ();
4732 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4736 debug_to_terminal_save_ours (void)
4738 debug_target
.to_terminal_save_ours ();
4740 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4744 debug_to_terminal_info (const char *arg
, int from_tty
)
4746 debug_target
.to_terminal_info (arg
, from_tty
);
4748 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4753 debug_to_load (char *args
, int from_tty
)
4755 debug_target
.to_load (args
, from_tty
);
4757 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4761 debug_to_post_startup_inferior (ptid_t ptid
)
4763 debug_target
.to_post_startup_inferior (ptid
);
4765 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4766 ptid_get_pid (ptid
));
4770 debug_to_insert_fork_catchpoint (int pid
)
4774 retval
= debug_target
.to_insert_fork_catchpoint (pid
);
4776 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4783 debug_to_remove_fork_catchpoint (int pid
)
4787 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
4789 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4796 debug_to_insert_vfork_catchpoint (int pid
)
4800 retval
= debug_target
.to_insert_vfork_catchpoint (pid
);
4802 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4809 debug_to_remove_vfork_catchpoint (int pid
)
4813 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
4815 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4822 debug_to_insert_exec_catchpoint (int pid
)
4826 retval
= debug_target
.to_insert_exec_catchpoint (pid
);
4828 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4835 debug_to_remove_exec_catchpoint (int pid
)
4839 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
4841 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4848 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
4852 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
4854 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4855 pid
, wait_status
, *exit_status
, has_exited
);
4861 debug_to_can_run (void)
4865 retval
= debug_target
.to_can_run ();
4867 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4872 static struct gdbarch
*
4873 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4875 struct gdbarch
*retval
;
4877 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4879 fprintf_unfiltered (gdb_stdlog
,
4880 "target_thread_architecture (%s) = %s [%s]\n",
4881 target_pid_to_str (ptid
),
4882 host_address_to_string (retval
),
4883 gdbarch_bfd_arch_info (retval
)->printable_name
);
4888 debug_to_stop (ptid_t ptid
)
4890 debug_target
.to_stop (ptid
);
4892 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4893 target_pid_to_str (ptid
));
4897 debug_to_rcmd (char *command
,
4898 struct ui_file
*outbuf
)
4900 debug_target
.to_rcmd (command
, outbuf
);
4901 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4905 debug_to_pid_to_exec_file (int pid
)
4909 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
4911 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4918 setup_target_debug (void)
4920 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4922 current_target
.to_open
= debug_to_open
;
4923 current_target
.to_post_attach
= debug_to_post_attach
;
4924 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4925 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4926 current_target
.to_files_info
= debug_to_files_info
;
4927 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4928 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4929 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4930 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4931 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4932 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4933 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4934 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4935 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4936 current_target
.to_watchpoint_addr_within_range
4937 = debug_to_watchpoint_addr_within_range
;
4938 current_target
.to_region_ok_for_hw_watchpoint
4939 = debug_to_region_ok_for_hw_watchpoint
;
4940 current_target
.to_can_accel_watchpoint_condition
4941 = debug_to_can_accel_watchpoint_condition
;
4942 current_target
.to_terminal_init
= debug_to_terminal_init
;
4943 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4944 current_target
.to_terminal_ours_for_output
4945 = debug_to_terminal_ours_for_output
;
4946 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4947 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4948 current_target
.to_terminal_info
= debug_to_terminal_info
;
4949 current_target
.to_load
= debug_to_load
;
4950 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4951 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4952 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4953 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4954 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4955 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4956 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4957 current_target
.to_has_exited
= debug_to_has_exited
;
4958 current_target
.to_can_run
= debug_to_can_run
;
4959 current_target
.to_stop
= debug_to_stop
;
4960 current_target
.to_rcmd
= debug_to_rcmd
;
4961 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4962 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4966 static char targ_desc
[] =
4967 "Names of targets and files being debugged.\nShows the entire \
4968 stack of targets currently in use (including the exec-file,\n\
4969 core-file, and process, if any), as well as the symbol file name.";
4972 do_monitor_command (char *cmd
,
4975 if ((current_target
.to_rcmd
4976 == (void (*) (char *, struct ui_file
*)) tcomplain
)
4977 || (current_target
.to_rcmd
== debug_to_rcmd
4978 && (debug_target
.to_rcmd
4979 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
4980 error (_("\"monitor\" command not supported by this target."));
4981 target_rcmd (cmd
, gdb_stdtarg
);
4984 /* Print the name of each layers of our target stack. */
4987 maintenance_print_target_stack (char *cmd
, int from_tty
)
4989 struct target_ops
*t
;
4991 printf_filtered (_("The current target stack is:\n"));
4993 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4995 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4999 /* Controls if async mode is permitted. */
5000 int target_async_permitted
= 0;
5002 /* The set command writes to this variable. If the inferior is
5003 executing, target_async_permitted is *not* updated. */
5004 static int target_async_permitted_1
= 0;
5007 set_target_async_command (char *args
, int from_tty
,
5008 struct cmd_list_element
*c
)
5010 if (have_live_inferiors ())
5012 target_async_permitted_1
= target_async_permitted
;
5013 error (_("Cannot change this setting while the inferior is running."));
5016 target_async_permitted
= target_async_permitted_1
;
5020 show_target_async_command (struct ui_file
*file
, int from_tty
,
5021 struct cmd_list_element
*c
,
5024 fprintf_filtered (file
,
5025 _("Controlling the inferior in "
5026 "asynchronous mode is %s.\n"), value
);
5029 /* Temporary copies of permission settings. */
5031 static int may_write_registers_1
= 1;
5032 static int may_write_memory_1
= 1;
5033 static int may_insert_breakpoints_1
= 1;
5034 static int may_insert_tracepoints_1
= 1;
5035 static int may_insert_fast_tracepoints_1
= 1;
5036 static int may_stop_1
= 1;
5038 /* Make the user-set values match the real values again. */
5041 update_target_permissions (void)
5043 may_write_registers_1
= may_write_registers
;
5044 may_write_memory_1
= may_write_memory
;
5045 may_insert_breakpoints_1
= may_insert_breakpoints
;
5046 may_insert_tracepoints_1
= may_insert_tracepoints
;
5047 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
5048 may_stop_1
= may_stop
;
5051 /* The one function handles (most of) the permission flags in the same
5055 set_target_permissions (char *args
, int from_tty
,
5056 struct cmd_list_element
*c
)
5058 if (target_has_execution
)
5060 update_target_permissions ();
5061 error (_("Cannot change this setting while the inferior is running."));
5064 /* Make the real values match the user-changed values. */
5065 may_write_registers
= may_write_registers_1
;
5066 may_insert_breakpoints
= may_insert_breakpoints_1
;
5067 may_insert_tracepoints
= may_insert_tracepoints_1
;
5068 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
5069 may_stop
= may_stop_1
;
5070 update_observer_mode ();
5073 /* Set memory write permission independently of observer mode. */
5076 set_write_memory_permission (char *args
, int from_tty
,
5077 struct cmd_list_element
*c
)
5079 /* Make the real values match the user-changed values. */
5080 may_write_memory
= may_write_memory_1
;
5081 update_observer_mode ();
5086 initialize_targets (void)
5088 init_dummy_target ();
5089 push_target (&dummy_target
);
5091 add_info ("target", target_info
, targ_desc
);
5092 add_info ("files", target_info
, targ_desc
);
5094 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
5095 Set target debugging."), _("\
5096 Show target debugging."), _("\
5097 When non-zero, target debugging is enabled. Higher numbers are more\n\
5098 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
5102 &setdebuglist
, &showdebuglist
);
5104 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
5105 &trust_readonly
, _("\
5106 Set mode for reading from readonly sections."), _("\
5107 Show mode for reading from readonly sections."), _("\
5108 When this mode is on, memory reads from readonly sections (such as .text)\n\
5109 will be read from the object file instead of from the target. This will\n\
5110 result in significant performance improvement for remote targets."),
5112 show_trust_readonly
,
5113 &setlist
, &showlist
);
5115 add_com ("monitor", class_obscure
, do_monitor_command
,
5116 _("Send a command to the remote monitor (remote targets only)."));
5118 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5119 _("Print the name of each layer of the internal target stack."),
5120 &maintenanceprintlist
);
5122 add_setshow_boolean_cmd ("target-async", no_class
,
5123 &target_async_permitted_1
, _("\
5124 Set whether gdb controls the inferior in asynchronous mode."), _("\
5125 Show whether gdb controls the inferior in asynchronous mode."), _("\
5126 Tells gdb whether to control the inferior in asynchronous mode."),
5127 set_target_async_command
,
5128 show_target_async_command
,
5132 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5133 &may_write_registers_1
, _("\
5134 Set permission to write into registers."), _("\
5135 Show permission to write into registers."), _("\
5136 When this permission is on, GDB may write into the target's registers.\n\
5137 Otherwise, any sort of write attempt will result in an error."),
5138 set_target_permissions
, NULL
,
5139 &setlist
, &showlist
);
5141 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5142 &may_write_memory_1
, _("\
5143 Set permission to write into target memory."), _("\
5144 Show permission to write into target memory."), _("\
5145 When this permission is on, GDB may write into the target's memory.\n\
5146 Otherwise, any sort of write attempt will result in an error."),
5147 set_write_memory_permission
, NULL
,
5148 &setlist
, &showlist
);
5150 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5151 &may_insert_breakpoints_1
, _("\
5152 Set permission to insert breakpoints in the target."), _("\
5153 Show permission to insert breakpoints in the target."), _("\
5154 When this permission is on, GDB may insert breakpoints in the program.\n\
5155 Otherwise, any sort of insertion attempt will result in an error."),
5156 set_target_permissions
, NULL
,
5157 &setlist
, &showlist
);
5159 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5160 &may_insert_tracepoints_1
, _("\
5161 Set permission to insert tracepoints in the target."), _("\
5162 Show permission to insert tracepoints in the target."), _("\
5163 When this permission is on, GDB may insert tracepoints in the program.\n\
5164 Otherwise, any sort of insertion attempt will result in an error."),
5165 set_target_permissions
, NULL
,
5166 &setlist
, &showlist
);
5168 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5169 &may_insert_fast_tracepoints_1
, _("\
5170 Set permission to insert fast tracepoints in the target."), _("\
5171 Show permission to insert fast tracepoints in the target."), _("\
5172 When this permission is on, GDB may insert fast tracepoints.\n\
5173 Otherwise, any sort of insertion attempt will result in an error."),
5174 set_target_permissions
, NULL
,
5175 &setlist
, &showlist
);
5177 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5179 Set permission to interrupt or signal the target."), _("\
5180 Show permission to interrupt or signal the target."), _("\
5181 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5182 Otherwise, any attempt to interrupt or stop will be ignored."),
5183 set_target_permissions
, NULL
,
5184 &setlist
, &showlist
);