1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2014 Free Software Foundation, Inc.
5 Contributed by Cygnus Support.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "target-dcache.h"
36 #include "gdb_assert.h"
38 #include "exceptions.h"
39 #include "target-descriptions.h"
40 #include "gdbthread.h"
43 #include "inline-frame.h"
44 #include "tracepoint.h"
45 #include "gdb/fileio.h"
48 static void target_info (char *, int);
50 static void default_terminal_info (struct target_ops
*, const char *, int);
52 static int default_watchpoint_addr_within_range (struct target_ops
*,
53 CORE_ADDR
, CORE_ADDR
, int);
55 static int default_region_ok_for_hw_watchpoint (struct target_ops
*,
58 static void default_rcmd (struct target_ops
*, char *, struct ui_file
*);
60 static ptid_t
default_get_ada_task_ptid (struct target_ops
*self
,
63 static int default_follow_fork (struct target_ops
*self
, int follow_child
,
66 static void default_mourn_inferior (struct target_ops
*self
);
68 static void tcomplain (void) ATTRIBUTE_NORETURN
;
70 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
72 static int return_zero (void);
74 void target_ignore (void);
76 static void target_command (char *, int);
78 static struct target_ops
*find_default_run_target (char *);
80 static target_xfer_partial_ftype default_xfer_partial
;
82 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
85 static int dummy_find_memory_regions (struct target_ops
*self
,
86 find_memory_region_ftype ignore1
,
89 static char *dummy_make_corefile_notes (struct target_ops
*self
,
90 bfd
*ignore1
, int *ignore2
);
92 static char *default_pid_to_str (struct target_ops
*ops
, ptid_t ptid
);
94 static int find_default_can_async_p (struct target_ops
*ignore
);
96 static int find_default_is_async_p (struct target_ops
*ignore
);
98 static enum exec_direction_kind default_execution_direction
99 (struct target_ops
*self
);
101 #include "target-delegates.c"
103 static void init_dummy_target (void);
105 static struct target_ops debug_target
;
107 static void debug_to_open (char *, int);
109 static void debug_to_prepare_to_store (struct target_ops
*self
,
112 static void debug_to_files_info (struct target_ops
*);
114 static int debug_to_insert_breakpoint (struct target_ops
*, struct gdbarch
*,
115 struct bp_target_info
*);
117 static int debug_to_remove_breakpoint (struct target_ops
*, struct gdbarch
*,
118 struct bp_target_info
*);
120 static int debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
123 static int debug_to_insert_hw_breakpoint (struct target_ops
*self
,
125 struct bp_target_info
*);
127 static int debug_to_remove_hw_breakpoint (struct target_ops
*self
,
129 struct bp_target_info
*);
131 static int debug_to_insert_watchpoint (struct target_ops
*self
,
133 struct expression
*);
135 static int debug_to_remove_watchpoint (struct target_ops
*self
,
137 struct expression
*);
139 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
141 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
142 CORE_ADDR
, CORE_ADDR
, int);
144 static int debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
147 static int debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
149 struct expression
*);
151 static void debug_to_terminal_init (struct target_ops
*self
);
153 static void debug_to_terminal_inferior (struct target_ops
*self
);
155 static void debug_to_terminal_ours_for_output (struct target_ops
*self
);
157 static void debug_to_terminal_save_ours (struct target_ops
*self
);
159 static void debug_to_terminal_ours (struct target_ops
*self
);
161 static void debug_to_load (struct target_ops
*self
, char *, int);
163 static int debug_to_can_run (struct target_ops
*self
);
165 static void debug_to_stop (struct target_ops
*self
, ptid_t
);
167 /* Pointer to array of target architecture structures; the size of the
168 array; the current index into the array; the allocated size of the
170 struct target_ops
**target_structs
;
171 unsigned target_struct_size
;
172 unsigned target_struct_allocsize
;
173 #define DEFAULT_ALLOCSIZE 10
175 /* The initial current target, so that there is always a semi-valid
178 static struct target_ops dummy_target
;
180 /* Top of target stack. */
182 static struct target_ops
*target_stack
;
184 /* The target structure we are currently using to talk to a process
185 or file or whatever "inferior" we have. */
187 struct target_ops current_target
;
189 /* Command list for target. */
191 static struct cmd_list_element
*targetlist
= NULL
;
193 /* Nonzero if we should trust readonly sections from the
194 executable when reading memory. */
196 static int trust_readonly
= 0;
198 /* Nonzero if we should show true memory content including
199 memory breakpoint inserted by gdb. */
201 static int show_memory_breakpoints
= 0;
203 /* These globals control whether GDB attempts to perform these
204 operations; they are useful for targets that need to prevent
205 inadvertant disruption, such as in non-stop mode. */
207 int may_write_registers
= 1;
209 int may_write_memory
= 1;
211 int may_insert_breakpoints
= 1;
213 int may_insert_tracepoints
= 1;
215 int may_insert_fast_tracepoints
= 1;
219 /* Non-zero if we want to see trace of target level stuff. */
221 static unsigned int targetdebug
= 0;
223 show_targetdebug (struct ui_file
*file
, int from_tty
,
224 struct cmd_list_element
*c
, const char *value
)
226 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
229 static void setup_target_debug (void);
231 /* The user just typed 'target' without the name of a target. */
234 target_command (char *arg
, int from_tty
)
236 fputs_filtered ("Argument required (target name). Try `help target'\n",
240 /* Default target_has_* methods for process_stratum targets. */
243 default_child_has_all_memory (struct target_ops
*ops
)
245 /* If no inferior selected, then we can't read memory here. */
246 if (ptid_equal (inferior_ptid
, null_ptid
))
253 default_child_has_memory (struct target_ops
*ops
)
255 /* If no inferior selected, then we can't read memory here. */
256 if (ptid_equal (inferior_ptid
, null_ptid
))
263 default_child_has_stack (struct target_ops
*ops
)
265 /* If no inferior selected, there's no stack. */
266 if (ptid_equal (inferior_ptid
, null_ptid
))
273 default_child_has_registers (struct target_ops
*ops
)
275 /* Can't read registers from no inferior. */
276 if (ptid_equal (inferior_ptid
, null_ptid
))
283 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
285 /* If there's no thread selected, then we can't make it run through
287 if (ptid_equal (the_ptid
, null_ptid
))
295 target_has_all_memory_1 (void)
297 struct target_ops
*t
;
299 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
300 if (t
->to_has_all_memory (t
))
307 target_has_memory_1 (void)
309 struct target_ops
*t
;
311 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
312 if (t
->to_has_memory (t
))
319 target_has_stack_1 (void)
321 struct target_ops
*t
;
323 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
324 if (t
->to_has_stack (t
))
331 target_has_registers_1 (void)
333 struct target_ops
*t
;
335 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
336 if (t
->to_has_registers (t
))
343 target_has_execution_1 (ptid_t the_ptid
)
345 struct target_ops
*t
;
347 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
348 if (t
->to_has_execution (t
, the_ptid
))
355 target_has_execution_current (void)
357 return target_has_execution_1 (inferior_ptid
);
360 /* Complete initialization of T. This ensures that various fields in
361 T are set, if needed by the target implementation. */
364 complete_target_initialization (struct target_ops
*t
)
366 /* Provide default values for all "must have" methods. */
367 if (t
->to_xfer_partial
== NULL
)
368 t
->to_xfer_partial
= default_xfer_partial
;
370 if (t
->to_has_all_memory
== NULL
)
371 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
373 if (t
->to_has_memory
== NULL
)
374 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
376 if (t
->to_has_stack
== NULL
)
377 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
379 if (t
->to_has_registers
== NULL
)
380 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
382 if (t
->to_has_execution
== NULL
)
383 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
385 install_delegators (t
);
388 /* Add possible target architecture T to the list and add a new
389 command 'target T->to_shortname'. Set COMPLETER as the command's
390 completer if not NULL. */
393 add_target_with_completer (struct target_ops
*t
,
394 completer_ftype
*completer
)
396 struct cmd_list_element
*c
;
398 complete_target_initialization (t
);
402 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
403 target_structs
= (struct target_ops
**) xmalloc
404 (target_struct_allocsize
* sizeof (*target_structs
));
406 if (target_struct_size
>= target_struct_allocsize
)
408 target_struct_allocsize
*= 2;
409 target_structs
= (struct target_ops
**)
410 xrealloc ((char *) target_structs
,
411 target_struct_allocsize
* sizeof (*target_structs
));
413 target_structs
[target_struct_size
++] = t
;
415 if (targetlist
== NULL
)
416 add_prefix_cmd ("target", class_run
, target_command
, _("\
417 Connect to a target machine or process.\n\
418 The first argument is the type or protocol of the target machine.\n\
419 Remaining arguments are interpreted by the target protocol. For more\n\
420 information on the arguments for a particular protocol, type\n\
421 `help target ' followed by the protocol name."),
422 &targetlist
, "target ", 0, &cmdlist
);
423 c
= add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
,
425 if (completer
!= NULL
)
426 set_cmd_completer (c
, completer
);
429 /* Add a possible target architecture to the list. */
432 add_target (struct target_ops
*t
)
434 add_target_with_completer (t
, NULL
);
440 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
442 struct cmd_list_element
*c
;
445 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
447 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
448 alt
= xstrprintf ("target %s", t
->to_shortname
);
449 deprecate_cmd (c
, alt
);
463 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
465 current_target
.to_kill (¤t_target
);
469 target_load (char *arg
, int from_tty
)
471 target_dcache_invalidate ();
472 (*current_target
.to_load
) (¤t_target
, arg
, from_tty
);
476 target_create_inferior (char *exec_file
, char *args
,
477 char **env
, int from_tty
)
479 struct target_ops
*t
;
481 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
483 if (t
->to_create_inferior
!= NULL
)
485 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
487 fprintf_unfiltered (gdb_stdlog
,
488 "target_create_inferior (%s, %s, xxx, %d)\n",
489 exec_file
, args
, from_tty
);
494 internal_error (__FILE__
, __LINE__
,
495 _("could not find a target to create inferior"));
499 target_terminal_inferior (void)
501 /* A background resume (``run&'') should leave GDB in control of the
502 terminal. Use target_can_async_p, not target_is_async_p, since at
503 this point the target is not async yet. However, if sync_execution
504 is not set, we know it will become async prior to resume. */
505 if (target_can_async_p () && !sync_execution
)
508 /* If GDB is resuming the inferior in the foreground, install
509 inferior's terminal modes. */
510 (*current_target
.to_terminal_inferior
) (¤t_target
);
514 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
515 struct target_ops
*t
)
517 errno
= EIO
; /* Can't read/write this location. */
518 return 0; /* No bytes handled. */
524 error (_("You can't do that when your target is `%s'"),
525 current_target
.to_shortname
);
531 error (_("You can't do that without a process to debug."));
535 default_terminal_info (struct target_ops
*self
, const char *args
, int from_tty
)
537 printf_unfiltered (_("No saved terminal information.\n"));
540 /* A default implementation for the to_get_ada_task_ptid target method.
542 This function builds the PTID by using both LWP and TID as part of
543 the PTID lwp and tid elements. The pid used is the pid of the
547 default_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long tid
)
549 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
552 static enum exec_direction_kind
553 default_execution_direction (struct target_ops
*self
)
555 if (!target_can_execute_reverse
)
557 else if (!target_can_async_p ())
560 gdb_assert_not_reached ("\
561 to_execution_direction must be implemented for reverse async");
564 /* Go through the target stack from top to bottom, copying over zero
565 entries in current_target, then filling in still empty entries. In
566 effect, we are doing class inheritance through the pushed target
569 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
570 is currently implemented, is that it discards any knowledge of
571 which target an inherited method originally belonged to.
572 Consequently, new new target methods should instead explicitly and
573 locally search the target stack for the target that can handle the
577 update_current_target (void)
579 struct target_ops
*t
;
581 /* First, reset current's contents. */
582 memset (¤t_target
, 0, sizeof (current_target
));
584 /* Install the delegators. */
585 install_delegators (¤t_target
);
587 #define INHERIT(FIELD, TARGET) \
588 if (!current_target.FIELD) \
589 current_target.FIELD = (TARGET)->FIELD
591 for (t
= target_stack
; t
; t
= t
->beneath
)
593 INHERIT (to_shortname
, t
);
594 INHERIT (to_longname
, t
);
596 /* Do not inherit to_open. */
597 /* Do not inherit to_close. */
598 /* Do not inherit to_attach. */
599 /* Do not inherit to_post_attach. */
600 INHERIT (to_attach_no_wait
, t
);
601 /* Do not inherit to_detach. */
602 /* Do not inherit to_disconnect. */
603 /* Do not inherit to_resume. */
604 /* Do not inherit to_wait. */
605 /* Do not inherit to_fetch_registers. */
606 /* Do not inherit to_store_registers. */
607 /* Do not inherit to_prepare_to_store. */
608 INHERIT (deprecated_xfer_memory
, t
);
609 /* Do not inherit to_files_info. */
610 /* Do not inherit to_insert_breakpoint. */
611 /* Do not inherit to_remove_breakpoint. */
612 /* Do not inherit to_can_use_hw_breakpoint. */
613 /* Do not inherit to_insert_hw_breakpoint. */
614 /* Do not inherit to_remove_hw_breakpoint. */
615 /* Do not inherit to_ranged_break_num_registers. */
616 /* Do not inherit to_insert_watchpoint. */
617 /* Do not inherit to_remove_watchpoint. */
618 /* Do not inherit to_insert_mask_watchpoint. */
619 /* Do not inherit to_remove_mask_watchpoint. */
620 /* Do not inherit to_stopped_data_address. */
621 INHERIT (to_have_steppable_watchpoint
, t
);
622 INHERIT (to_have_continuable_watchpoint
, t
);
623 /* Do not inherit to_stopped_by_watchpoint. */
624 /* Do not inherit to_watchpoint_addr_within_range. */
625 /* Do not inherit to_region_ok_for_hw_watchpoint. */
626 /* Do not inherit to_can_accel_watchpoint_condition. */
627 /* Do not inherit to_masked_watch_num_registers. */
628 /* Do not inherit to_terminal_init. */
629 /* Do not inherit to_terminal_inferior. */
630 /* Do not inherit to_terminal_ours_for_output. */
631 /* Do not inherit to_terminal_ours. */
632 /* Do not inherit to_terminal_save_ours. */
633 /* Do not inherit to_terminal_info. */
634 /* Do not inherit to_kill. */
635 /* Do not inherit to_load. */
636 /* Do no inherit to_create_inferior. */
637 /* Do not inherit to_post_startup_inferior. */
638 /* Do not inherit to_insert_fork_catchpoint. */
639 /* Do not inherit to_remove_fork_catchpoint. */
640 /* Do not inherit to_insert_vfork_catchpoint. */
641 /* Do not inherit to_remove_vfork_catchpoint. */
642 /* Do not inherit to_follow_fork. */
643 /* Do not inherit to_insert_exec_catchpoint. */
644 /* Do not inherit to_remove_exec_catchpoint. */
645 /* Do not inherit to_set_syscall_catchpoint. */
646 /* Do not inherit to_has_exited. */
647 /* Do not inherit to_mourn_inferior. */
648 INHERIT (to_can_run
, t
);
649 /* Do not inherit to_pass_signals. */
650 /* Do not inherit to_program_signals. */
651 /* Do not inherit to_thread_alive. */
652 /* Do not inherit to_find_new_threads. */
653 /* Do not inherit to_pid_to_str. */
654 /* Do not inherit to_extra_thread_info. */
655 /* Do not inherit to_thread_name. */
656 /* Do not inherit to_stop. */
657 /* Do not inherit to_xfer_partial. */
658 /* Do not inherit to_rcmd. */
659 /* Do not inherit to_pid_to_exec_file. */
660 /* Do not inherit to_log_command. */
661 INHERIT (to_stratum
, t
);
662 /* Do not inherit to_has_all_memory. */
663 /* Do not inherit to_has_memory. */
664 /* Do not inherit to_has_stack. */
665 /* Do not inherit to_has_registers. */
666 /* Do not inherit to_has_execution. */
667 INHERIT (to_has_thread_control
, t
);
668 /* Do not inherit to_can_async_p. */
669 /* Do not inherit to_is_async_p. */
670 /* Do not inherit to_async. */
671 /* Do not inherit to_find_memory_regions. */
672 /* Do not inherit to_make_corefile_notes. */
673 /* Do not inherit to_get_bookmark. */
674 /* Do not inherit to_goto_bookmark. */
675 /* Do not inherit to_get_thread_local_address. */
676 /* Do not inherit to_can_execute_reverse. */
677 /* Do not inherit to_execution_direction. */
678 /* Do not inherit to_thread_architecture. */
679 /* Do not inherit to_read_description. */
680 /* Do not inherit to_get_ada_task_ptid. */
681 /* Do not inherit to_search_memory. */
682 /* Do not inherit to_supports_multi_process. */
683 /* Do not inherit to_supports_enable_disable_tracepoint. */
684 /* Do not inherit to_supports_string_tracing. */
685 /* Do not inherit to_trace_init. */
686 /* Do not inherit to_download_tracepoint. */
687 /* Do not inherit to_can_download_tracepoint. */
688 /* Do not inherit to_download_trace_state_variable. */
689 /* Do not inherit to_enable_tracepoint. */
690 /* Do not inherit to_disable_tracepoint. */
691 /* Do not inherit to_trace_set_readonly_regions. */
692 /* Do not inherit to_trace_start. */
693 /* Do not inherit to_get_trace_status. */
694 /* Do not inherit to_get_tracepoint_status. */
695 /* Do not inherit to_trace_stop. */
696 /* Do not inherit to_trace_find. */
697 /* Do not inherit to_get_trace_state_variable_value. */
698 /* Do not inherit to_save_trace_data. */
699 /* Do not inherit to_upload_tracepoints. */
700 /* Do not inherit to_upload_trace_state_variables. */
701 /* Do not inherit to_get_raw_trace_data. */
702 /* Do not inherit to_get_min_fast_tracepoint_insn_len. */
703 /* Do not inherit to_set_disconnected_tracing. */
704 /* Do not inherit to_set_circular_trace_buffer. */
705 /* Do not inherit to_set_trace_buffer_size. */
706 /* Do not inherit to_set_trace_notes. */
707 /* Do not inherit to_get_tib_address. */
708 /* Do not inherit to_set_permissions. */
709 /* Do not inherit to_static_tracepoint_marker_at. */
710 /* Do not inherit to_static_tracepoint_markers_by_strid. */
711 /* Do not inherit to_traceframe_info. */
712 /* Do not inherit to_use_agent. */
713 /* Do not inherit to_can_use_agent. */
714 /* Do not inherit to_augmented_libraries_svr4_read. */
715 INHERIT (to_magic
, t
);
717 to_supports_evaluation_of_breakpoint_conditions. */
718 /* Do not inherit to_can_run_breakpoint_commands. */
719 /* Do not inherit to_memory_map. */
720 /* Do not inherit to_flash_erase. */
721 /* Do not inherit to_flash_done. */
725 /* Clean up a target struct so it no longer has any zero pointers in
726 it. Some entries are defaulted to a method that print an error,
727 others are hard-wired to a standard recursive default. */
729 #define de_fault(field, value) \
730 if (!current_target.field) \
731 current_target.field = value
734 (void (*) (char *, int))
737 (void (*) (struct target_ops
*))
739 de_fault (deprecated_xfer_memory
,
740 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
741 struct mem_attrib
*, struct target_ops
*))
743 de_fault (to_can_run
,
744 (int (*) (struct target_ops
*))
746 current_target
.to_read_description
= NULL
;
750 /* Finally, position the target-stack beneath the squashed
751 "current_target". That way code looking for a non-inherited
752 target method can quickly and simply find it. */
753 current_target
.beneath
= target_stack
;
756 setup_target_debug ();
759 /* Push a new target type into the stack of the existing target accessors,
760 possibly superseding some of the existing accessors.
762 Rather than allow an empty stack, we always have the dummy target at
763 the bottom stratum, so we can call the function vectors without
767 push_target (struct target_ops
*t
)
769 struct target_ops
**cur
;
771 /* Check magic number. If wrong, it probably means someone changed
772 the struct definition, but not all the places that initialize one. */
773 if (t
->to_magic
!= OPS_MAGIC
)
775 fprintf_unfiltered (gdb_stderr
,
776 "Magic number of %s target struct wrong\n",
778 internal_error (__FILE__
, __LINE__
,
779 _("failed internal consistency check"));
782 /* Find the proper stratum to install this target in. */
783 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
785 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
789 /* If there's already targets at this stratum, remove them. */
790 /* FIXME: cagney/2003-10-15: I think this should be popping all
791 targets to CUR, and not just those at this stratum level. */
792 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
794 /* There's already something at this stratum level. Close it,
795 and un-hook it from the stack. */
796 struct target_ops
*tmp
= (*cur
);
798 (*cur
) = (*cur
)->beneath
;
803 /* We have removed all targets in our stratum, now add the new one. */
807 update_current_target ();
810 /* Remove a target_ops vector from the stack, wherever it may be.
811 Return how many times it was removed (0 or 1). */
814 unpush_target (struct target_ops
*t
)
816 struct target_ops
**cur
;
817 struct target_ops
*tmp
;
819 if (t
->to_stratum
== dummy_stratum
)
820 internal_error (__FILE__
, __LINE__
,
821 _("Attempt to unpush the dummy target"));
823 /* Look for the specified target. Note that we assume that a target
824 can only occur once in the target stack. */
826 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
832 /* If we don't find target_ops, quit. Only open targets should be
837 /* Unchain the target. */
839 (*cur
) = (*cur
)->beneath
;
842 update_current_target ();
844 /* Finally close the target. Note we do this after unchaining, so
845 any target method calls from within the target_close
846 implementation don't end up in T anymore. */
853 pop_all_targets_above (enum strata above_stratum
)
855 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
857 if (!unpush_target (target_stack
))
859 fprintf_unfiltered (gdb_stderr
,
860 "pop_all_targets couldn't find target %s\n",
861 target_stack
->to_shortname
);
862 internal_error (__FILE__
, __LINE__
,
863 _("failed internal consistency check"));
870 pop_all_targets (void)
872 pop_all_targets_above (dummy_stratum
);
875 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
878 target_is_pushed (struct target_ops
*t
)
880 struct target_ops
**cur
;
882 /* Check magic number. If wrong, it probably means someone changed
883 the struct definition, but not all the places that initialize one. */
884 if (t
->to_magic
!= OPS_MAGIC
)
886 fprintf_unfiltered (gdb_stderr
,
887 "Magic number of %s target struct wrong\n",
889 internal_error (__FILE__
, __LINE__
,
890 _("failed internal consistency check"));
893 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
900 /* Using the objfile specified in OBJFILE, find the address for the
901 current thread's thread-local storage with offset OFFSET. */
903 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
905 volatile CORE_ADDR addr
= 0;
906 struct target_ops
*target
;
908 for (target
= current_target
.beneath
;
910 target
= target
->beneath
)
912 if (target
->to_get_thread_local_address
!= NULL
)
917 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
919 ptid_t ptid
= inferior_ptid
;
920 volatile struct gdb_exception ex
;
922 TRY_CATCH (ex
, RETURN_MASK_ALL
)
926 /* Fetch the load module address for this objfile. */
927 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
929 /* If it's 0, throw the appropriate exception. */
931 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
932 _("TLS load module not found"));
934 addr
= target
->to_get_thread_local_address (target
, ptid
,
937 /* If an error occurred, print TLS related messages here. Otherwise,
938 throw the error to some higher catcher. */
941 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
945 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
946 error (_("Cannot find thread-local variables "
947 "in this thread library."));
949 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
950 if (objfile_is_library
)
951 error (_("Cannot find shared library `%s' in dynamic"
952 " linker's load module list"), objfile_name (objfile
));
954 error (_("Cannot find executable file `%s' in dynamic"
955 " linker's load module list"), objfile_name (objfile
));
957 case TLS_NOT_ALLOCATED_YET_ERROR
:
958 if (objfile_is_library
)
959 error (_("The inferior has not yet allocated storage for"
960 " thread-local variables in\n"
961 "the shared library `%s'\n"
963 objfile_name (objfile
), target_pid_to_str (ptid
));
965 error (_("The inferior has not yet allocated storage for"
966 " thread-local variables in\n"
967 "the executable `%s'\n"
969 objfile_name (objfile
), target_pid_to_str (ptid
));
971 case TLS_GENERIC_ERROR
:
972 if (objfile_is_library
)
973 error (_("Cannot find thread-local storage for %s, "
974 "shared library %s:\n%s"),
975 target_pid_to_str (ptid
),
976 objfile_name (objfile
), ex
.message
);
978 error (_("Cannot find thread-local storage for %s, "
979 "executable file %s:\n%s"),
980 target_pid_to_str (ptid
),
981 objfile_name (objfile
), ex
.message
);
984 throw_exception (ex
);
989 /* It wouldn't be wrong here to try a gdbarch method, too; finding
990 TLS is an ABI-specific thing. But we don't do that yet. */
992 error (_("Cannot find thread-local variables on this target"));
998 target_xfer_status_to_string (enum target_xfer_status err
)
1000 #define CASE(X) case X: return #X
1003 CASE(TARGET_XFER_E_IO
);
1004 CASE(TARGET_XFER_E_UNAVAILABLE
);
1013 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1015 /* target_read_string -- read a null terminated string, up to LEN bytes,
1016 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1017 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1018 is responsible for freeing it. Return the number of bytes successfully
1022 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1024 int tlen
, offset
, i
;
1028 int buffer_allocated
;
1030 unsigned int nbytes_read
= 0;
1032 gdb_assert (string
);
1034 /* Small for testing. */
1035 buffer_allocated
= 4;
1036 buffer
= xmalloc (buffer_allocated
);
1041 tlen
= MIN (len
, 4 - (memaddr
& 3));
1042 offset
= memaddr
& 3;
1044 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1047 /* The transfer request might have crossed the boundary to an
1048 unallocated region of memory. Retry the transfer, requesting
1052 errcode
= target_read_memory (memaddr
, buf
, 1);
1057 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1061 bytes
= bufptr
- buffer
;
1062 buffer_allocated
*= 2;
1063 buffer
= xrealloc (buffer
, buffer_allocated
);
1064 bufptr
= buffer
+ bytes
;
1067 for (i
= 0; i
< tlen
; i
++)
1069 *bufptr
++ = buf
[i
+ offset
];
1070 if (buf
[i
+ offset
] == '\000')
1072 nbytes_read
+= i
+ 1;
1079 nbytes_read
+= tlen
;
1088 struct target_section_table
*
1089 target_get_section_table (struct target_ops
*target
)
1092 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1094 return (*target
->to_get_section_table
) (target
);
1097 /* Find a section containing ADDR. */
1099 struct target_section
*
1100 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1102 struct target_section_table
*table
= target_get_section_table (target
);
1103 struct target_section
*secp
;
1108 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1110 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1116 /* Read memory from the live target, even if currently inspecting a
1117 traceframe. The return is the same as that of target_read. */
1119 static enum target_xfer_status
1120 target_read_live_memory (enum target_object object
,
1121 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1122 ULONGEST
*xfered_len
)
1124 enum target_xfer_status ret
;
1125 struct cleanup
*cleanup
;
1127 /* Switch momentarily out of tfind mode so to access live memory.
1128 Note that this must not clear global state, such as the frame
1129 cache, which must still remain valid for the previous traceframe.
1130 We may be _building_ the frame cache at this point. */
1131 cleanup
= make_cleanup_restore_traceframe_number ();
1132 set_traceframe_number (-1);
1134 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1135 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1137 do_cleanups (cleanup
);
1141 /* Using the set of read-only target sections of OPS, read live
1142 read-only memory. Note that the actual reads start from the
1143 top-most target again.
1145 For interface/parameters/return description see target.h,
1148 static enum target_xfer_status
1149 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1150 enum target_object object
,
1151 gdb_byte
*readbuf
, ULONGEST memaddr
,
1152 ULONGEST len
, ULONGEST
*xfered_len
)
1154 struct target_section
*secp
;
1155 struct target_section_table
*table
;
1157 secp
= target_section_by_addr (ops
, memaddr
);
1159 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1160 secp
->the_bfd_section
)
1163 struct target_section
*p
;
1164 ULONGEST memend
= memaddr
+ len
;
1166 table
= target_get_section_table (ops
);
1168 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1170 if (memaddr
>= p
->addr
)
1172 if (memend
<= p
->endaddr
)
1174 /* Entire transfer is within this section. */
1175 return target_read_live_memory (object
, memaddr
,
1176 readbuf
, len
, xfered_len
);
1178 else if (memaddr
>= p
->endaddr
)
1180 /* This section ends before the transfer starts. */
1185 /* This section overlaps the transfer. Just do half. */
1186 len
= p
->endaddr
- memaddr
;
1187 return target_read_live_memory (object
, memaddr
,
1188 readbuf
, len
, xfered_len
);
1194 return TARGET_XFER_EOF
;
1197 /* Read memory from more than one valid target. A core file, for
1198 instance, could have some of memory but delegate other bits to
1199 the target below it. So, we must manually try all targets. */
1201 static enum target_xfer_status
1202 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1203 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1204 ULONGEST
*xfered_len
)
1206 enum target_xfer_status res
;
1210 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1211 readbuf
, writebuf
, memaddr
, len
,
1213 if (res
== TARGET_XFER_OK
)
1216 /* Stop if the target reports that the memory is not available. */
1217 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1220 /* We want to continue past core files to executables, but not
1221 past a running target's memory. */
1222 if (ops
->to_has_all_memory (ops
))
1227 while (ops
!= NULL
);
1232 /* Perform a partial memory transfer.
1233 For docs see target.h, to_xfer_partial. */
1235 static enum target_xfer_status
1236 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1237 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1238 ULONGEST len
, ULONGEST
*xfered_len
)
1240 enum target_xfer_status res
;
1242 struct mem_region
*region
;
1243 struct inferior
*inf
;
1245 /* For accesses to unmapped overlay sections, read directly from
1246 files. Must do this first, as MEMADDR may need adjustment. */
1247 if (readbuf
!= NULL
&& overlay_debugging
)
1249 struct obj_section
*section
= find_pc_overlay (memaddr
);
1251 if (pc_in_unmapped_range (memaddr
, section
))
1253 struct target_section_table
*table
1254 = target_get_section_table (ops
);
1255 const char *section_name
= section
->the_bfd_section
->name
;
1257 memaddr
= overlay_mapped_address (memaddr
, section
);
1258 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1259 memaddr
, len
, xfered_len
,
1261 table
->sections_end
,
1266 /* Try the executable files, if "trust-readonly-sections" is set. */
1267 if (readbuf
!= NULL
&& trust_readonly
)
1269 struct target_section
*secp
;
1270 struct target_section_table
*table
;
1272 secp
= target_section_by_addr (ops
, memaddr
);
1274 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1275 secp
->the_bfd_section
)
1278 table
= target_get_section_table (ops
);
1279 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1280 memaddr
, len
, xfered_len
,
1282 table
->sections_end
,
1287 /* If reading unavailable memory in the context of traceframes, and
1288 this address falls within a read-only section, fallback to
1289 reading from live memory. */
1290 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1292 VEC(mem_range_s
) *available
;
1294 /* If we fail to get the set of available memory, then the
1295 target does not support querying traceframe info, and so we
1296 attempt reading from the traceframe anyway (assuming the
1297 target implements the old QTro packet then). */
1298 if (traceframe_available_memory (&available
, memaddr
, len
))
1300 struct cleanup
*old_chain
;
1302 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1304 if (VEC_empty (mem_range_s
, available
)
1305 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1307 /* Don't read into the traceframe's available
1309 if (!VEC_empty (mem_range_s
, available
))
1311 LONGEST oldlen
= len
;
1313 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1314 gdb_assert (len
<= oldlen
);
1317 do_cleanups (old_chain
);
1319 /* This goes through the topmost target again. */
1320 res
= memory_xfer_live_readonly_partial (ops
, object
,
1323 if (res
== TARGET_XFER_OK
)
1324 return TARGET_XFER_OK
;
1327 /* No use trying further, we know some memory starting
1328 at MEMADDR isn't available. */
1330 return TARGET_XFER_E_UNAVAILABLE
;
1334 /* Don't try to read more than how much is available, in
1335 case the target implements the deprecated QTro packet to
1336 cater for older GDBs (the target's knowledge of read-only
1337 sections may be outdated by now). */
1338 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1340 do_cleanups (old_chain
);
1344 /* Try GDB's internal data cache. */
1345 region
= lookup_mem_region (memaddr
);
1346 /* region->hi == 0 means there's no upper bound. */
1347 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1350 reg_len
= region
->hi
- memaddr
;
1352 switch (region
->attrib
.mode
)
1355 if (writebuf
!= NULL
)
1356 return TARGET_XFER_E_IO
;
1360 if (readbuf
!= NULL
)
1361 return TARGET_XFER_E_IO
;
1365 /* We only support writing to flash during "load" for now. */
1366 if (writebuf
!= NULL
)
1367 error (_("Writing to flash memory forbidden in this context"));
1371 return TARGET_XFER_E_IO
;
1374 if (!ptid_equal (inferior_ptid
, null_ptid
))
1375 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1380 /* The dcache reads whole cache lines; that doesn't play well
1381 with reading from a trace buffer, because reading outside of
1382 the collected memory range fails. */
1383 && get_traceframe_number () == -1
1384 && (region
->attrib
.cache
1385 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1386 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1388 DCACHE
*dcache
= target_dcache_get_or_init ();
1391 if (readbuf
!= NULL
)
1392 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1394 /* FIXME drow/2006-08-09: If we're going to preserve const
1395 correctness dcache_xfer_memory should take readbuf and
1397 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1400 return TARGET_XFER_E_IO
;
1403 *xfered_len
= (ULONGEST
) l
;
1404 return TARGET_XFER_OK
;
1408 /* If none of those methods found the memory we wanted, fall back
1409 to a target partial transfer. Normally a single call to
1410 to_xfer_partial is enough; if it doesn't recognize an object
1411 it will call the to_xfer_partial of the next target down.
1412 But for memory this won't do. Memory is the only target
1413 object which can be read from more than one valid target.
1414 A core file, for instance, could have some of memory but
1415 delegate other bits to the target below it. So, we must
1416 manually try all targets. */
1418 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1421 /* Make sure the cache gets updated no matter what - if we are writing
1422 to the stack. Even if this write is not tagged as such, we still need
1423 to update the cache. */
1425 if (res
== TARGET_XFER_OK
1428 && target_dcache_init_p ()
1429 && !region
->attrib
.cache
1430 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1431 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1433 DCACHE
*dcache
= target_dcache_get ();
1435 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1438 /* If we still haven't got anything, return the last error. We
1443 /* Perform a partial memory transfer. For docs see target.h,
1446 static enum target_xfer_status
1447 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1448 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1449 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1451 enum target_xfer_status res
;
1453 /* Zero length requests are ok and require no work. */
1455 return TARGET_XFER_EOF
;
1457 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1458 breakpoint insns, thus hiding out from higher layers whether
1459 there are software breakpoints inserted in the code stream. */
1460 if (readbuf
!= NULL
)
1462 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1465 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1466 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1471 struct cleanup
*old_chain
;
1473 /* A large write request is likely to be partially satisfied
1474 by memory_xfer_partial_1. We will continually malloc
1475 and free a copy of the entire write request for breakpoint
1476 shadow handling even though we only end up writing a small
1477 subset of it. Cap writes to 4KB to mitigate this. */
1478 len
= min (4096, len
);
1480 buf
= xmalloc (len
);
1481 old_chain
= make_cleanup (xfree
, buf
);
1482 memcpy (buf
, writebuf
, len
);
1484 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1485 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1488 do_cleanups (old_chain
);
1495 restore_show_memory_breakpoints (void *arg
)
1497 show_memory_breakpoints
= (uintptr_t) arg
;
1501 make_show_memory_breakpoints_cleanup (int show
)
1503 int current
= show_memory_breakpoints
;
1505 show_memory_breakpoints
= show
;
1506 return make_cleanup (restore_show_memory_breakpoints
,
1507 (void *) (uintptr_t) current
);
1510 /* For docs see target.h, to_xfer_partial. */
1512 enum target_xfer_status
1513 target_xfer_partial (struct target_ops
*ops
,
1514 enum target_object object
, const char *annex
,
1515 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1516 ULONGEST offset
, ULONGEST len
,
1517 ULONGEST
*xfered_len
)
1519 enum target_xfer_status retval
;
1521 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1523 /* Transfer is done when LEN is zero. */
1525 return TARGET_XFER_EOF
;
1527 if (writebuf
&& !may_write_memory
)
1528 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1529 core_addr_to_string_nz (offset
), plongest (len
));
1533 /* If this is a memory transfer, let the memory-specific code
1534 have a look at it instead. Memory transfers are more
1536 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1537 || object
== TARGET_OBJECT_CODE_MEMORY
)
1538 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1539 writebuf
, offset
, len
, xfered_len
);
1540 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1542 /* Request the normal memory object from other layers. */
1543 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1547 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1548 writebuf
, offset
, len
, xfered_len
);
1552 const unsigned char *myaddr
= NULL
;
1554 fprintf_unfiltered (gdb_stdlog
,
1555 "%s:target_xfer_partial "
1556 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1559 (annex
? annex
: "(null)"),
1560 host_address_to_string (readbuf
),
1561 host_address_to_string (writebuf
),
1562 core_addr_to_string_nz (offset
),
1563 pulongest (len
), retval
,
1564 pulongest (*xfered_len
));
1570 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1574 fputs_unfiltered (", bytes =", gdb_stdlog
);
1575 for (i
= 0; i
< *xfered_len
; i
++)
1577 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1579 if (targetdebug
< 2 && i
> 0)
1581 fprintf_unfiltered (gdb_stdlog
, " ...");
1584 fprintf_unfiltered (gdb_stdlog
, "\n");
1587 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1591 fputc_unfiltered ('\n', gdb_stdlog
);
1594 /* Check implementations of to_xfer_partial update *XFERED_LEN
1595 properly. Do assertion after printing debug messages, so that we
1596 can find more clues on assertion failure from debugging messages. */
1597 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1598 gdb_assert (*xfered_len
> 0);
1603 /* Read LEN bytes of target memory at address MEMADDR, placing the
1604 results in GDB's memory at MYADDR. Returns either 0 for success or
1605 TARGET_XFER_E_IO if any error occurs.
1607 If an error occurs, no guarantee is made about the contents of the data at
1608 MYADDR. In particular, the caller should not depend upon partial reads
1609 filling the buffer with good data. There is no way for the caller to know
1610 how much good data might have been transfered anyway. Callers that can
1611 deal with partial reads should call target_read (which will retry until
1612 it makes no progress, and then return how much was transferred). */
1615 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1617 /* Dispatch to the topmost target, not the flattened current_target.
1618 Memory accesses check target->to_has_(all_)memory, and the
1619 flattened target doesn't inherit those. */
1620 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1621 myaddr
, memaddr
, len
) == len
)
1624 return TARGET_XFER_E_IO
;
1627 /* Like target_read_memory, but specify explicitly that this is a read
1628 from the target's raw memory. That is, this read bypasses the
1629 dcache, breakpoint shadowing, etc. */
1632 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1634 /* See comment in target_read_memory about why the request starts at
1635 current_target.beneath. */
1636 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1637 myaddr
, memaddr
, len
) == len
)
1640 return TARGET_XFER_E_IO
;
1643 /* Like target_read_memory, but specify explicitly that this is a read from
1644 the target's stack. This may trigger different cache behavior. */
1647 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1649 /* See comment in target_read_memory about why the request starts at
1650 current_target.beneath. */
1651 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1652 myaddr
, memaddr
, len
) == len
)
1655 return TARGET_XFER_E_IO
;
1658 /* Like target_read_memory, but specify explicitly that this is a read from
1659 the target's code. This may trigger different cache behavior. */
1662 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1664 /* See comment in target_read_memory about why the request starts at
1665 current_target.beneath. */
1666 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1667 myaddr
, memaddr
, len
) == len
)
1670 return TARGET_XFER_E_IO
;
1673 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1674 Returns either 0 for success or TARGET_XFER_E_IO if any
1675 error occurs. If an error occurs, no guarantee is made about how
1676 much data got written. Callers that can deal with partial writes
1677 should call target_write. */
1680 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1682 /* See comment in target_read_memory about why the request starts at
1683 current_target.beneath. */
1684 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1685 myaddr
, memaddr
, len
) == len
)
1688 return TARGET_XFER_E_IO
;
1691 /* Write LEN bytes from MYADDR to target raw memory at address
1692 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1693 if any error occurs. If an error occurs, no guarantee is made
1694 about how much data got written. Callers that can deal with
1695 partial writes should call target_write. */
1698 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1700 /* See comment in target_read_memory about why the request starts at
1701 current_target.beneath. */
1702 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1703 myaddr
, memaddr
, len
) == len
)
1706 return TARGET_XFER_E_IO
;
1709 /* Fetch the target's memory map. */
1712 target_memory_map (void)
1714 VEC(mem_region_s
) *result
;
1715 struct mem_region
*last_one
, *this_one
;
1717 struct target_ops
*t
;
1720 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1722 result
= current_target
.to_memory_map (¤t_target
);
1726 qsort (VEC_address (mem_region_s
, result
),
1727 VEC_length (mem_region_s
, result
),
1728 sizeof (struct mem_region
), mem_region_cmp
);
1730 /* Check that regions do not overlap. Simultaneously assign
1731 a numbering for the "mem" commands to use to refer to
1734 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1736 this_one
->number
= ix
;
1738 if (last_one
&& last_one
->hi
> this_one
->lo
)
1740 warning (_("Overlapping regions in memory map: ignoring"));
1741 VEC_free (mem_region_s
, result
);
1744 last_one
= this_one
;
1751 target_flash_erase (ULONGEST address
, LONGEST length
)
1754 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1755 hex_string (address
), phex (length
, 0));
1756 current_target
.to_flash_erase (¤t_target
, address
, length
);
1760 target_flash_done (void)
1763 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1764 current_target
.to_flash_done (¤t_target
);
1768 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1769 struct cmd_list_element
*c
, const char *value
)
1771 fprintf_filtered (file
,
1772 _("Mode for reading from readonly sections is %s.\n"),
1776 /* More generic transfers. */
1778 static enum target_xfer_status
1779 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1780 const char *annex
, gdb_byte
*readbuf
,
1781 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1782 ULONGEST
*xfered_len
)
1784 if (object
== TARGET_OBJECT_MEMORY
1785 && ops
->deprecated_xfer_memory
!= NULL
)
1786 /* If available, fall back to the target's
1787 "deprecated_xfer_memory" method. */
1792 if (writebuf
!= NULL
)
1794 void *buffer
= xmalloc (len
);
1795 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1797 memcpy (buffer
, writebuf
, len
);
1798 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1799 1/*write*/, NULL
, ops
);
1800 do_cleanups (cleanup
);
1802 if (readbuf
!= NULL
)
1803 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1804 0/*read*/, NULL
, ops
);
1807 *xfered_len
= (ULONGEST
) xfered
;
1808 return TARGET_XFER_E_IO
;
1810 else if (xfered
== 0 && errno
== 0)
1811 /* "deprecated_xfer_memory" uses 0, cross checked against
1812 ERRNO as one indication of an error. */
1813 return TARGET_XFER_EOF
;
1815 return TARGET_XFER_E_IO
;
1819 gdb_assert (ops
->beneath
!= NULL
);
1820 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1821 readbuf
, writebuf
, offset
, len
,
1826 /* Target vector read/write partial wrapper functions. */
1828 static enum target_xfer_status
1829 target_read_partial (struct target_ops
*ops
,
1830 enum target_object object
,
1831 const char *annex
, gdb_byte
*buf
,
1832 ULONGEST offset
, ULONGEST len
,
1833 ULONGEST
*xfered_len
)
1835 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
1839 static enum target_xfer_status
1840 target_write_partial (struct target_ops
*ops
,
1841 enum target_object object
,
1842 const char *annex
, const gdb_byte
*buf
,
1843 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
1845 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
1849 /* Wrappers to perform the full transfer. */
1851 /* For docs on target_read see target.h. */
1854 target_read (struct target_ops
*ops
,
1855 enum target_object object
,
1856 const char *annex
, gdb_byte
*buf
,
1857 ULONGEST offset
, LONGEST len
)
1861 while (xfered
< len
)
1863 ULONGEST xfered_len
;
1864 enum target_xfer_status status
;
1866 status
= target_read_partial (ops
, object
, annex
,
1867 (gdb_byte
*) buf
+ xfered
,
1868 offset
+ xfered
, len
- xfered
,
1871 /* Call an observer, notifying them of the xfer progress? */
1872 if (status
== TARGET_XFER_EOF
)
1874 else if (status
== TARGET_XFER_OK
)
1876 xfered
+= xfered_len
;
1886 /* Assuming that the entire [begin, end) range of memory cannot be
1887 read, try to read whatever subrange is possible to read.
1889 The function returns, in RESULT, either zero or one memory block.
1890 If there's a readable subrange at the beginning, it is completely
1891 read and returned. Any further readable subrange will not be read.
1892 Otherwise, if there's a readable subrange at the end, it will be
1893 completely read and returned. Any readable subranges before it
1894 (obviously, not starting at the beginning), will be ignored. In
1895 other cases -- either no readable subrange, or readable subrange(s)
1896 that is neither at the beginning, or end, nothing is returned.
1898 The purpose of this function is to handle a read across a boundary
1899 of accessible memory in a case when memory map is not available.
1900 The above restrictions are fine for this case, but will give
1901 incorrect results if the memory is 'patchy'. However, supporting
1902 'patchy' memory would require trying to read every single byte,
1903 and it seems unacceptable solution. Explicit memory map is
1904 recommended for this case -- and target_read_memory_robust will
1905 take care of reading multiple ranges then. */
1908 read_whatever_is_readable (struct target_ops
*ops
,
1909 ULONGEST begin
, ULONGEST end
,
1910 VEC(memory_read_result_s
) **result
)
1912 gdb_byte
*buf
= xmalloc (end
- begin
);
1913 ULONGEST current_begin
= begin
;
1914 ULONGEST current_end
= end
;
1916 memory_read_result_s r
;
1917 ULONGEST xfered_len
;
1919 /* If we previously failed to read 1 byte, nothing can be done here. */
1920 if (end
- begin
<= 1)
1926 /* Check that either first or the last byte is readable, and give up
1927 if not. This heuristic is meant to permit reading accessible memory
1928 at the boundary of accessible region. */
1929 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1930 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
1935 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1936 buf
+ (end
-begin
) - 1, end
- 1, 1,
1937 &xfered_len
) == TARGET_XFER_OK
)
1948 /* Loop invariant is that the [current_begin, current_end) was previously
1949 found to be not readable as a whole.
1951 Note loop condition -- if the range has 1 byte, we can't divide the range
1952 so there's no point trying further. */
1953 while (current_end
- current_begin
> 1)
1955 ULONGEST first_half_begin
, first_half_end
;
1956 ULONGEST second_half_begin
, second_half_end
;
1958 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
1962 first_half_begin
= current_begin
;
1963 first_half_end
= middle
;
1964 second_half_begin
= middle
;
1965 second_half_end
= current_end
;
1969 first_half_begin
= middle
;
1970 first_half_end
= current_end
;
1971 second_half_begin
= current_begin
;
1972 second_half_end
= middle
;
1975 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1976 buf
+ (first_half_begin
- begin
),
1978 first_half_end
- first_half_begin
);
1980 if (xfer
== first_half_end
- first_half_begin
)
1982 /* This half reads up fine. So, the error must be in the
1984 current_begin
= second_half_begin
;
1985 current_end
= second_half_end
;
1989 /* This half is not readable. Because we've tried one byte, we
1990 know some part of this half if actually redable. Go to the next
1991 iteration to divide again and try to read.
1993 We don't handle the other half, because this function only tries
1994 to read a single readable subrange. */
1995 current_begin
= first_half_begin
;
1996 current_end
= first_half_end
;
2002 /* The [begin, current_begin) range has been read. */
2004 r
.end
= current_begin
;
2009 /* The [current_end, end) range has been read. */
2010 LONGEST rlen
= end
- current_end
;
2012 r
.data
= xmalloc (rlen
);
2013 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2014 r
.begin
= current_end
;
2018 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2022 free_memory_read_result_vector (void *x
)
2024 VEC(memory_read_result_s
) *v
= x
;
2025 memory_read_result_s
*current
;
2028 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2030 xfree (current
->data
);
2032 VEC_free (memory_read_result_s
, v
);
2035 VEC(memory_read_result_s
) *
2036 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2038 VEC(memory_read_result_s
) *result
= 0;
2041 while (xfered
< len
)
2043 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2046 /* If there is no explicit region, a fake one should be created. */
2047 gdb_assert (region
);
2049 if (region
->hi
== 0)
2050 rlen
= len
- xfered
;
2052 rlen
= region
->hi
- offset
;
2054 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2056 /* Cannot read this region. Note that we can end up here only
2057 if the region is explicitly marked inaccessible, or
2058 'inaccessible-by-default' is in effect. */
2063 LONGEST to_read
= min (len
- xfered
, rlen
);
2064 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2066 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2067 (gdb_byte
*) buffer
,
2068 offset
+ xfered
, to_read
);
2069 /* Call an observer, notifying them of the xfer progress? */
2072 /* Got an error reading full chunk. See if maybe we can read
2075 read_whatever_is_readable (ops
, offset
+ xfered
,
2076 offset
+ xfered
+ to_read
, &result
);
2081 struct memory_read_result r
;
2083 r
.begin
= offset
+ xfered
;
2084 r
.end
= r
.begin
+ xfer
;
2085 VEC_safe_push (memory_read_result_s
, result
, &r
);
2095 /* An alternative to target_write with progress callbacks. */
2098 target_write_with_progress (struct target_ops
*ops
,
2099 enum target_object object
,
2100 const char *annex
, const gdb_byte
*buf
,
2101 ULONGEST offset
, LONGEST len
,
2102 void (*progress
) (ULONGEST
, void *), void *baton
)
2106 /* Give the progress callback a chance to set up. */
2108 (*progress
) (0, baton
);
2110 while (xfered
< len
)
2112 ULONGEST xfered_len
;
2113 enum target_xfer_status status
;
2115 status
= target_write_partial (ops
, object
, annex
,
2116 (gdb_byte
*) buf
+ xfered
,
2117 offset
+ xfered
, len
- xfered
,
2120 if (status
== TARGET_XFER_EOF
)
2122 if (TARGET_XFER_STATUS_ERROR_P (status
))
2125 gdb_assert (status
== TARGET_XFER_OK
);
2127 (*progress
) (xfered_len
, baton
);
2129 xfered
+= xfered_len
;
2135 /* For docs on target_write see target.h. */
2138 target_write (struct target_ops
*ops
,
2139 enum target_object object
,
2140 const char *annex
, const gdb_byte
*buf
,
2141 ULONGEST offset
, LONGEST len
)
2143 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2147 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2148 the size of the transferred data. PADDING additional bytes are
2149 available in *BUF_P. This is a helper function for
2150 target_read_alloc; see the declaration of that function for more
2154 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2155 const char *annex
, gdb_byte
**buf_p
, int padding
)
2157 size_t buf_alloc
, buf_pos
;
2160 /* This function does not have a length parameter; it reads the
2161 entire OBJECT). Also, it doesn't support objects fetched partly
2162 from one target and partly from another (in a different stratum,
2163 e.g. a core file and an executable). Both reasons make it
2164 unsuitable for reading memory. */
2165 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2167 /* Start by reading up to 4K at a time. The target will throttle
2168 this number down if necessary. */
2170 buf
= xmalloc (buf_alloc
);
2174 ULONGEST xfered_len
;
2175 enum target_xfer_status status
;
2177 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2178 buf_pos
, buf_alloc
- buf_pos
- padding
,
2181 if (status
== TARGET_XFER_EOF
)
2183 /* Read all there was. */
2190 else if (status
!= TARGET_XFER_OK
)
2192 /* An error occurred. */
2194 return TARGET_XFER_E_IO
;
2197 buf_pos
+= xfered_len
;
2199 /* If the buffer is filling up, expand it. */
2200 if (buf_alloc
< buf_pos
* 2)
2203 buf
= xrealloc (buf
, buf_alloc
);
2210 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2211 the size of the transferred data. See the declaration in "target.h"
2212 function for more information about the return value. */
2215 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2216 const char *annex
, gdb_byte
**buf_p
)
2218 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2221 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2222 returned as a string, allocated using xmalloc. If an error occurs
2223 or the transfer is unsupported, NULL is returned. Empty objects
2224 are returned as allocated but empty strings. A warning is issued
2225 if the result contains any embedded NUL bytes. */
2228 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2233 LONGEST i
, transferred
;
2235 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2236 bufstr
= (char *) buffer
;
2238 if (transferred
< 0)
2241 if (transferred
== 0)
2242 return xstrdup ("");
2244 bufstr
[transferred
] = 0;
2246 /* Check for embedded NUL bytes; but allow trailing NULs. */
2247 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2250 warning (_("target object %d, annex %s, "
2251 "contained unexpected null characters"),
2252 (int) object
, annex
? annex
: "(none)");
2259 /* Memory transfer methods. */
2262 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2265 /* This method is used to read from an alternate, non-current
2266 target. This read must bypass the overlay support (as symbols
2267 don't match this target), and GDB's internal cache (wrong cache
2268 for this target). */
2269 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2271 memory_error (TARGET_XFER_E_IO
, addr
);
2275 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2276 int len
, enum bfd_endian byte_order
)
2278 gdb_byte buf
[sizeof (ULONGEST
)];
2280 gdb_assert (len
<= sizeof (buf
));
2281 get_target_memory (ops
, addr
, buf
, len
);
2282 return extract_unsigned_integer (buf
, len
, byte_order
);
2288 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2289 struct bp_target_info
*bp_tgt
)
2291 if (!may_insert_breakpoints
)
2293 warning (_("May not insert breakpoints"));
2297 return current_target
.to_insert_breakpoint (¤t_target
,
2304 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2305 struct bp_target_info
*bp_tgt
)
2307 /* This is kind of a weird case to handle, but the permission might
2308 have been changed after breakpoints were inserted - in which case
2309 we should just take the user literally and assume that any
2310 breakpoints should be left in place. */
2311 if (!may_insert_breakpoints
)
2313 warning (_("May not remove breakpoints"));
2317 return current_target
.to_remove_breakpoint (¤t_target
,
2322 target_info (char *args
, int from_tty
)
2324 struct target_ops
*t
;
2325 int has_all_mem
= 0;
2327 if (symfile_objfile
!= NULL
)
2328 printf_unfiltered (_("Symbols from \"%s\".\n"),
2329 objfile_name (symfile_objfile
));
2331 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2333 if (!(*t
->to_has_memory
) (t
))
2336 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2339 printf_unfiltered (_("\tWhile running this, "
2340 "GDB does not access memory from...\n"));
2341 printf_unfiltered ("%s:\n", t
->to_longname
);
2342 (t
->to_files_info
) (t
);
2343 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2347 /* This function is called before any new inferior is created, e.g.
2348 by running a program, attaching, or connecting to a target.
2349 It cleans up any state from previous invocations which might
2350 change between runs. This is a subset of what target_preopen
2351 resets (things which might change between targets). */
2354 target_pre_inferior (int from_tty
)
2356 /* Clear out solib state. Otherwise the solib state of the previous
2357 inferior might have survived and is entirely wrong for the new
2358 target. This has been observed on GNU/Linux using glibc 2.3. How
2370 Cannot access memory at address 0xdeadbeef
2373 /* In some OSs, the shared library list is the same/global/shared
2374 across inferiors. If code is shared between processes, so are
2375 memory regions and features. */
2376 if (!gdbarch_has_global_solist (target_gdbarch ()))
2378 no_shared_libraries (NULL
, from_tty
);
2380 invalidate_target_mem_regions ();
2382 target_clear_description ();
2385 agent_capability_invalidate ();
2388 /* Callback for iterate_over_inferiors. Gets rid of the given
2392 dispose_inferior (struct inferior
*inf
, void *args
)
2394 struct thread_info
*thread
;
2396 thread
= any_thread_of_process (inf
->pid
);
2399 switch_to_thread (thread
->ptid
);
2401 /* Core inferiors actually should be detached, not killed. */
2402 if (target_has_execution
)
2405 target_detach (NULL
, 0);
2411 /* This is to be called by the open routine before it does
2415 target_preopen (int from_tty
)
2419 if (have_inferiors ())
2422 || !have_live_inferiors ()
2423 || query (_("A program is being debugged already. Kill it? ")))
2424 iterate_over_inferiors (dispose_inferior
, NULL
);
2426 error (_("Program not killed."));
2429 /* Calling target_kill may remove the target from the stack. But if
2430 it doesn't (which seems like a win for UDI), remove it now. */
2431 /* Leave the exec target, though. The user may be switching from a
2432 live process to a core of the same program. */
2433 pop_all_targets_above (file_stratum
);
2435 target_pre_inferior (from_tty
);
2438 /* Detach a target after doing deferred register stores. */
2441 target_detach (const char *args
, int from_tty
)
2443 struct target_ops
* t
;
2445 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2446 /* Don't remove global breakpoints here. They're removed on
2447 disconnection from the target. */
2450 /* If we're in breakpoints-always-inserted mode, have to remove
2451 them before detaching. */
2452 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2454 prepare_for_detach ();
2456 current_target
.to_detach (¤t_target
, args
, from_tty
);
2458 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2463 target_disconnect (char *args
, int from_tty
)
2465 struct target_ops
*t
;
2467 /* If we're in breakpoints-always-inserted mode or if breakpoints
2468 are global across processes, we have to remove them before
2470 remove_breakpoints ();
2472 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2473 if (t
->to_disconnect
!= NULL
)
2476 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2478 t
->to_disconnect (t
, args
, from_tty
);
2486 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2488 struct target_ops
*t
;
2489 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2494 char *status_string
;
2495 char *options_string
;
2497 status_string
= target_waitstatus_to_string (status
);
2498 options_string
= target_options_to_string (options
);
2499 fprintf_unfiltered (gdb_stdlog
,
2500 "target_wait (%d, status, options={%s})"
2502 ptid_get_pid (ptid
), options_string
,
2503 ptid_get_pid (retval
), status_string
);
2504 xfree (status_string
);
2505 xfree (options_string
);
2512 target_pid_to_str (ptid_t ptid
)
2514 return (*current_target
.to_pid_to_str
) (¤t_target
, ptid
);
2518 target_thread_name (struct thread_info
*info
)
2520 return current_target
.to_thread_name (¤t_target
, info
);
2524 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2526 struct target_ops
*t
;
2528 target_dcache_invalidate ();
2530 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2532 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2533 ptid_get_pid (ptid
),
2534 step
? "step" : "continue",
2535 gdb_signal_to_name (signal
));
2537 registers_changed_ptid (ptid
);
2538 set_executing (ptid
, 1);
2539 set_running (ptid
, 1);
2540 clear_inline_frame_state (ptid
);
2544 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2550 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2553 for (i
= 0; i
< numsigs
; i
++)
2554 if (pass_signals
[i
])
2555 fprintf_unfiltered (gdb_stdlog
, " %s",
2556 gdb_signal_to_name (i
));
2558 fprintf_unfiltered (gdb_stdlog
, " })\n");
2561 (*current_target
.to_pass_signals
) (¤t_target
, numsigs
, pass_signals
);
2565 target_program_signals (int numsigs
, unsigned char *program_signals
)
2571 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2574 for (i
= 0; i
< numsigs
; i
++)
2575 if (program_signals
[i
])
2576 fprintf_unfiltered (gdb_stdlog
, " %s",
2577 gdb_signal_to_name (i
));
2579 fprintf_unfiltered (gdb_stdlog
, " })\n");
2582 (*current_target
.to_program_signals
) (¤t_target
,
2583 numsigs
, program_signals
);
2587 default_follow_fork (struct target_ops
*self
, int follow_child
,
2590 /* Some target returned a fork event, but did not know how to follow it. */
2591 internal_error (__FILE__
, __LINE__
,
2592 _("could not find a target to follow fork"));
2595 /* Look through the list of possible targets for a target that can
2599 target_follow_fork (int follow_child
, int detach_fork
)
2601 int retval
= current_target
.to_follow_fork (¤t_target
,
2602 follow_child
, detach_fork
);
2605 fprintf_unfiltered (gdb_stdlog
,
2606 "target_follow_fork (%d, %d) = %d\n",
2607 follow_child
, detach_fork
, retval
);
2612 default_mourn_inferior (struct target_ops
*self
)
2614 internal_error (__FILE__
, __LINE__
,
2615 _("could not find a target to follow mourn inferior"));
2619 target_mourn_inferior (void)
2621 current_target
.to_mourn_inferior (¤t_target
);
2623 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2625 /* We no longer need to keep handles on any of the object files.
2626 Make sure to release them to avoid unnecessarily locking any
2627 of them while we're not actually debugging. */
2628 bfd_cache_close_all ();
2631 /* Look for a target which can describe architectural features, starting
2632 from TARGET. If we find one, return its description. */
2634 const struct target_desc
*
2635 target_read_description (struct target_ops
*target
)
2637 struct target_ops
*t
;
2639 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2640 if (t
->to_read_description
!= NULL
)
2642 const struct target_desc
*tdesc
;
2644 tdesc
= t
->to_read_description (t
);
2652 /* The default implementation of to_search_memory.
2653 This implements a basic search of memory, reading target memory and
2654 performing the search here (as opposed to performing the search in on the
2655 target side with, for example, gdbserver). */
2658 simple_search_memory (struct target_ops
*ops
,
2659 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2660 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2661 CORE_ADDR
*found_addrp
)
2663 /* NOTE: also defined in find.c testcase. */
2664 #define SEARCH_CHUNK_SIZE 16000
2665 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2666 /* Buffer to hold memory contents for searching. */
2667 gdb_byte
*search_buf
;
2668 unsigned search_buf_size
;
2669 struct cleanup
*old_cleanups
;
2671 search_buf_size
= chunk_size
+ pattern_len
- 1;
2673 /* No point in trying to allocate a buffer larger than the search space. */
2674 if (search_space_len
< search_buf_size
)
2675 search_buf_size
= search_space_len
;
2677 search_buf
= malloc (search_buf_size
);
2678 if (search_buf
== NULL
)
2679 error (_("Unable to allocate memory to perform the search."));
2680 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2682 /* Prime the search buffer. */
2684 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2685 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2687 warning (_("Unable to access %s bytes of target "
2688 "memory at %s, halting search."),
2689 pulongest (search_buf_size
), hex_string (start_addr
));
2690 do_cleanups (old_cleanups
);
2694 /* Perform the search.
2696 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2697 When we've scanned N bytes we copy the trailing bytes to the start and
2698 read in another N bytes. */
2700 while (search_space_len
>= pattern_len
)
2702 gdb_byte
*found_ptr
;
2703 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2705 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2706 pattern
, pattern_len
);
2708 if (found_ptr
!= NULL
)
2710 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2712 *found_addrp
= found_addr
;
2713 do_cleanups (old_cleanups
);
2717 /* Not found in this chunk, skip to next chunk. */
2719 /* Don't let search_space_len wrap here, it's unsigned. */
2720 if (search_space_len
>= chunk_size
)
2721 search_space_len
-= chunk_size
;
2723 search_space_len
= 0;
2725 if (search_space_len
>= pattern_len
)
2727 unsigned keep_len
= search_buf_size
- chunk_size
;
2728 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2731 /* Copy the trailing part of the previous iteration to the front
2732 of the buffer for the next iteration. */
2733 gdb_assert (keep_len
== pattern_len
- 1);
2734 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2736 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2738 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2739 search_buf
+ keep_len
, read_addr
,
2740 nr_to_read
) != nr_to_read
)
2742 warning (_("Unable to access %s bytes of target "
2743 "memory at %s, halting search."),
2744 plongest (nr_to_read
),
2745 hex_string (read_addr
));
2746 do_cleanups (old_cleanups
);
2750 start_addr
+= chunk_size
;
2756 do_cleanups (old_cleanups
);
2760 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2761 sequence of bytes in PATTERN with length PATTERN_LEN.
2763 The result is 1 if found, 0 if not found, and -1 if there was an error
2764 requiring halting of the search (e.g. memory read error).
2765 If the pattern is found the address is recorded in FOUND_ADDRP. */
2768 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2769 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2770 CORE_ADDR
*found_addrp
)
2772 struct target_ops
*t
;
2775 /* We don't use INHERIT to set current_target.to_search_memory,
2776 so we have to scan the target stack and handle targetdebug
2780 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2781 hex_string (start_addr
));
2783 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2784 if (t
->to_search_memory
!= NULL
)
2789 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2790 pattern
, pattern_len
, found_addrp
);
2794 /* If a special version of to_search_memory isn't available, use the
2796 found
= simple_search_memory (current_target
.beneath
,
2797 start_addr
, search_space_len
,
2798 pattern
, pattern_len
, found_addrp
);
2802 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2807 /* Look through the currently pushed targets. If none of them will
2808 be able to restart the currently running process, issue an error
2812 target_require_runnable (void)
2814 struct target_ops
*t
;
2816 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2818 /* If this target knows how to create a new program, then
2819 assume we will still be able to after killing the current
2820 one. Either killing and mourning will not pop T, or else
2821 find_default_run_target will find it again. */
2822 if (t
->to_create_inferior
!= NULL
)
2825 /* Do not worry about thread_stratum targets that can not
2826 create inferiors. Assume they will be pushed again if
2827 necessary, and continue to the process_stratum. */
2828 if (t
->to_stratum
== thread_stratum
2829 || t
->to_stratum
== arch_stratum
)
2832 error (_("The \"%s\" target does not support \"run\". "
2833 "Try \"help target\" or \"continue\"."),
2837 /* This function is only called if the target is running. In that
2838 case there should have been a process_stratum target and it
2839 should either know how to create inferiors, or not... */
2840 internal_error (__FILE__
, __LINE__
, _("No targets found"));
2843 /* Look through the list of possible targets for a target that can
2844 execute a run or attach command without any other data. This is
2845 used to locate the default process stratum.
2847 If DO_MESG is not NULL, the result is always valid (error() is
2848 called for errors); else, return NULL on error. */
2850 static struct target_ops
*
2851 find_default_run_target (char *do_mesg
)
2853 struct target_ops
**t
;
2854 struct target_ops
*runable
= NULL
;
2859 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2862 if ((*t
)->to_can_run
&& target_can_run (*t
))
2872 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
2881 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
2883 struct target_ops
*t
;
2885 t
= find_default_run_target ("attach");
2886 (t
->to_attach
) (t
, args
, from_tty
);
2891 find_default_create_inferior (struct target_ops
*ops
,
2892 char *exec_file
, char *allargs
, char **env
,
2895 struct target_ops
*t
;
2897 t
= find_default_run_target ("run");
2898 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
2903 find_default_can_async_p (struct target_ops
*ignore
)
2905 struct target_ops
*t
;
2907 /* This may be called before the target is pushed on the stack;
2908 look for the default process stratum. If there's none, gdb isn't
2909 configured with a native debugger, and target remote isn't
2911 t
= find_default_run_target (NULL
);
2912 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
2913 return (t
->to_can_async_p
) (t
);
2918 find_default_is_async_p (struct target_ops
*ignore
)
2920 struct target_ops
*t
;
2922 /* This may be called before the target is pushed on the stack;
2923 look for the default process stratum. If there's none, gdb isn't
2924 configured with a native debugger, and target remote isn't
2926 t
= find_default_run_target (NULL
);
2927 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
2928 return (t
->to_is_async_p
) (t
);
2933 find_default_supports_non_stop (struct target_ops
*self
)
2935 struct target_ops
*t
;
2937 t
= find_default_run_target (NULL
);
2938 if (t
&& t
->to_supports_non_stop
)
2939 return (t
->to_supports_non_stop
) (t
);
2944 target_supports_non_stop (void)
2946 struct target_ops
*t
;
2948 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
2949 if (t
->to_supports_non_stop
)
2950 return t
->to_supports_non_stop (t
);
2955 /* Implement the "info proc" command. */
2958 target_info_proc (char *args
, enum info_proc_what what
)
2960 struct target_ops
*t
;
2962 /* If we're already connected to something that can get us OS
2963 related data, use it. Otherwise, try using the native
2965 if (current_target
.to_stratum
>= process_stratum
)
2966 t
= current_target
.beneath
;
2968 t
= find_default_run_target (NULL
);
2970 for (; t
!= NULL
; t
= t
->beneath
)
2972 if (t
->to_info_proc
!= NULL
)
2974 t
->to_info_proc (t
, args
, what
);
2977 fprintf_unfiltered (gdb_stdlog
,
2978 "target_info_proc (\"%s\", %d)\n", args
, what
);
2988 find_default_supports_disable_randomization (struct target_ops
*self
)
2990 struct target_ops
*t
;
2992 t
= find_default_run_target (NULL
);
2993 if (t
&& t
->to_supports_disable_randomization
)
2994 return (t
->to_supports_disable_randomization
) (t
);
2999 target_supports_disable_randomization (void)
3001 struct target_ops
*t
;
3003 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3004 if (t
->to_supports_disable_randomization
)
3005 return t
->to_supports_disable_randomization (t
);
3011 target_get_osdata (const char *type
)
3013 struct target_ops
*t
;
3015 /* If we're already connected to something that can get us OS
3016 related data, use it. Otherwise, try using the native
3018 if (current_target
.to_stratum
>= process_stratum
)
3019 t
= current_target
.beneath
;
3021 t
= find_default_run_target ("get OS data");
3026 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3029 /* Determine the current address space of thread PTID. */
3031 struct address_space
*
3032 target_thread_address_space (ptid_t ptid
)
3034 struct address_space
*aspace
;
3035 struct inferior
*inf
;
3036 struct target_ops
*t
;
3038 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3040 if (t
->to_thread_address_space
!= NULL
)
3042 aspace
= t
->to_thread_address_space (t
, ptid
);
3043 gdb_assert (aspace
);
3046 fprintf_unfiltered (gdb_stdlog
,
3047 "target_thread_address_space (%s) = %d\n",
3048 target_pid_to_str (ptid
),
3049 address_space_num (aspace
));
3054 /* Fall-back to the "main" address space of the inferior. */
3055 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3057 if (inf
== NULL
|| inf
->aspace
== NULL
)
3058 internal_error (__FILE__
, __LINE__
,
3059 _("Can't determine the current "
3060 "address space of thread %s\n"),
3061 target_pid_to_str (ptid
));
3067 /* Target file operations. */
3069 static struct target_ops
*
3070 default_fileio_target (void)
3072 /* If we're already connected to something that can perform
3073 file I/O, use it. Otherwise, try using the native target. */
3074 if (current_target
.to_stratum
>= process_stratum
)
3075 return current_target
.beneath
;
3077 return find_default_run_target ("file I/O");
3080 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3081 target file descriptor, or -1 if an error occurs (and set
3084 target_fileio_open (const char *filename
, int flags
, int mode
,
3087 struct target_ops
*t
;
3089 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3091 if (t
->to_fileio_open
!= NULL
)
3093 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3096 fprintf_unfiltered (gdb_stdlog
,
3097 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3098 filename
, flags
, mode
,
3099 fd
, fd
!= -1 ? 0 : *target_errno
);
3104 *target_errno
= FILEIO_ENOSYS
;
3108 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3109 Return the number of bytes written, or -1 if an error occurs
3110 (and set *TARGET_ERRNO). */
3112 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3113 ULONGEST offset
, int *target_errno
)
3115 struct target_ops
*t
;
3117 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3119 if (t
->to_fileio_pwrite
!= NULL
)
3121 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3125 fprintf_unfiltered (gdb_stdlog
,
3126 "target_fileio_pwrite (%d,...,%d,%s) "
3128 fd
, len
, pulongest (offset
),
3129 ret
, ret
!= -1 ? 0 : *target_errno
);
3134 *target_errno
= FILEIO_ENOSYS
;
3138 /* Read up to LEN bytes FD on the target into READ_BUF.
3139 Return the number of bytes read, or -1 if an error occurs
3140 (and set *TARGET_ERRNO). */
3142 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3143 ULONGEST offset
, int *target_errno
)
3145 struct target_ops
*t
;
3147 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3149 if (t
->to_fileio_pread
!= NULL
)
3151 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3155 fprintf_unfiltered (gdb_stdlog
,
3156 "target_fileio_pread (%d,...,%d,%s) "
3158 fd
, len
, pulongest (offset
),
3159 ret
, ret
!= -1 ? 0 : *target_errno
);
3164 *target_errno
= FILEIO_ENOSYS
;
3168 /* Close FD on the target. Return 0, or -1 if an error occurs
3169 (and set *TARGET_ERRNO). */
3171 target_fileio_close (int fd
, int *target_errno
)
3173 struct target_ops
*t
;
3175 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3177 if (t
->to_fileio_close
!= NULL
)
3179 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3182 fprintf_unfiltered (gdb_stdlog
,
3183 "target_fileio_close (%d) = %d (%d)\n",
3184 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3189 *target_errno
= FILEIO_ENOSYS
;
3193 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3194 occurs (and set *TARGET_ERRNO). */
3196 target_fileio_unlink (const char *filename
, int *target_errno
)
3198 struct target_ops
*t
;
3200 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3202 if (t
->to_fileio_unlink
!= NULL
)
3204 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3207 fprintf_unfiltered (gdb_stdlog
,
3208 "target_fileio_unlink (%s) = %d (%d)\n",
3209 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3214 *target_errno
= FILEIO_ENOSYS
;
3218 /* Read value of symbolic link FILENAME on the target. Return a
3219 null-terminated string allocated via xmalloc, or NULL if an error
3220 occurs (and set *TARGET_ERRNO). */
3222 target_fileio_readlink (const char *filename
, int *target_errno
)
3224 struct target_ops
*t
;
3226 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3228 if (t
->to_fileio_readlink
!= NULL
)
3230 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3233 fprintf_unfiltered (gdb_stdlog
,
3234 "target_fileio_readlink (%s) = %s (%d)\n",
3235 filename
, ret
? ret
: "(nil)",
3236 ret
? 0 : *target_errno
);
3241 *target_errno
= FILEIO_ENOSYS
;
3246 target_fileio_close_cleanup (void *opaque
)
3248 int fd
= *(int *) opaque
;
3251 target_fileio_close (fd
, &target_errno
);
3254 /* Read target file FILENAME. Store the result in *BUF_P and
3255 return the size of the transferred data. PADDING additional bytes are
3256 available in *BUF_P. This is a helper function for
3257 target_fileio_read_alloc; see the declaration of that function for more
3261 target_fileio_read_alloc_1 (const char *filename
,
3262 gdb_byte
**buf_p
, int padding
)
3264 struct cleanup
*close_cleanup
;
3265 size_t buf_alloc
, buf_pos
;
3271 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3275 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3277 /* Start by reading up to 4K at a time. The target will throttle
3278 this number down if necessary. */
3280 buf
= xmalloc (buf_alloc
);
3284 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3285 buf_alloc
- buf_pos
- padding
, buf_pos
,
3289 /* An error occurred. */
3290 do_cleanups (close_cleanup
);
3296 /* Read all there was. */
3297 do_cleanups (close_cleanup
);
3307 /* If the buffer is filling up, expand it. */
3308 if (buf_alloc
< buf_pos
* 2)
3311 buf
= xrealloc (buf
, buf_alloc
);
3318 /* Read target file FILENAME. Store the result in *BUF_P and return
3319 the size of the transferred data. See the declaration in "target.h"
3320 function for more information about the return value. */
3323 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3325 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3328 /* Read target file FILENAME. The result is NUL-terminated and
3329 returned as a string, allocated using xmalloc. If an error occurs
3330 or the transfer is unsupported, NULL is returned. Empty objects
3331 are returned as allocated but empty strings. A warning is issued
3332 if the result contains any embedded NUL bytes. */
3335 target_fileio_read_stralloc (const char *filename
)
3339 LONGEST i
, transferred
;
3341 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3342 bufstr
= (char *) buffer
;
3344 if (transferred
< 0)
3347 if (transferred
== 0)
3348 return xstrdup ("");
3350 bufstr
[transferred
] = 0;
3352 /* Check for embedded NUL bytes; but allow trailing NULs. */
3353 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3356 warning (_("target file %s "
3357 "contained unexpected null characters"),
3367 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3368 CORE_ADDR addr
, int len
)
3370 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3374 default_watchpoint_addr_within_range (struct target_ops
*target
,
3376 CORE_ADDR start
, int length
)
3378 return addr
>= start
&& addr
< start
+ length
;
3381 static struct gdbarch
*
3382 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3384 return target_gdbarch ();
3394 * Find the next target down the stack from the specified target.
3398 find_target_beneath (struct target_ops
*t
)
3406 find_target_at (enum strata stratum
)
3408 struct target_ops
*t
;
3410 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3411 if (t
->to_stratum
== stratum
)
3418 /* The inferior process has died. Long live the inferior! */
3421 generic_mourn_inferior (void)
3425 ptid
= inferior_ptid
;
3426 inferior_ptid
= null_ptid
;
3428 /* Mark breakpoints uninserted in case something tries to delete a
3429 breakpoint while we delete the inferior's threads (which would
3430 fail, since the inferior is long gone). */
3431 mark_breakpoints_out ();
3433 if (!ptid_equal (ptid
, null_ptid
))
3435 int pid
= ptid_get_pid (ptid
);
3436 exit_inferior (pid
);
3439 /* Note this wipes step-resume breakpoints, so needs to be done
3440 after exit_inferior, which ends up referencing the step-resume
3441 breakpoints through clear_thread_inferior_resources. */
3442 breakpoint_init_inferior (inf_exited
);
3444 registers_changed ();
3446 reopen_exec_file ();
3447 reinit_frame_cache ();
3449 if (deprecated_detach_hook
)
3450 deprecated_detach_hook ();
3453 /* Convert a normal process ID to a string. Returns the string in a
3457 normal_pid_to_str (ptid_t ptid
)
3459 static char buf
[32];
3461 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3466 default_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3468 return normal_pid_to_str (ptid
);
3471 /* Error-catcher for target_find_memory_regions. */
3473 dummy_find_memory_regions (struct target_ops
*self
,
3474 find_memory_region_ftype ignore1
, void *ignore2
)
3476 error (_("Command not implemented for this target."));
3480 /* Error-catcher for target_make_corefile_notes. */
3482 dummy_make_corefile_notes (struct target_ops
*self
,
3483 bfd
*ignore1
, int *ignore2
)
3485 error (_("Command not implemented for this target."));
3489 /* Set up the handful of non-empty slots needed by the dummy target
3493 init_dummy_target (void)
3495 dummy_target
.to_shortname
= "None";
3496 dummy_target
.to_longname
= "None";
3497 dummy_target
.to_doc
= "";
3498 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3499 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3500 dummy_target
.to_supports_disable_randomization
3501 = find_default_supports_disable_randomization
;
3502 dummy_target
.to_stratum
= dummy_stratum
;
3503 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3504 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3505 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3506 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3507 dummy_target
.to_has_execution
3508 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3509 dummy_target
.to_magic
= OPS_MAGIC
;
3511 install_dummy_methods (&dummy_target
);
3515 debug_to_open (char *args
, int from_tty
)
3517 debug_target
.to_open (args
, from_tty
);
3519 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3523 target_close (struct target_ops
*targ
)
3525 gdb_assert (!target_is_pushed (targ
));
3527 if (targ
->to_xclose
!= NULL
)
3528 targ
->to_xclose (targ
);
3529 else if (targ
->to_close
!= NULL
)
3530 targ
->to_close (targ
);
3533 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3537 target_attach (char *args
, int from_tty
)
3539 current_target
.to_attach (¤t_target
, args
, from_tty
);
3541 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3546 target_thread_alive (ptid_t ptid
)
3550 retval
= current_target
.to_thread_alive (¤t_target
, ptid
);
3552 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3553 ptid_get_pid (ptid
), retval
);
3559 target_find_new_threads (void)
3561 current_target
.to_find_new_threads (¤t_target
);
3563 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3567 target_stop (ptid_t ptid
)
3571 warning (_("May not interrupt or stop the target, ignoring attempt"));
3575 (*current_target
.to_stop
) (¤t_target
, ptid
);
3579 debug_to_post_attach (struct target_ops
*self
, int pid
)
3581 debug_target
.to_post_attach (&debug_target
, pid
);
3583 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3586 /* Concatenate ELEM to LIST, a comma separate list, and return the
3587 result. The LIST incoming argument is released. */
3590 str_comma_list_concat_elem (char *list
, const char *elem
)
3593 return xstrdup (elem
);
3595 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3598 /* Helper for target_options_to_string. If OPT is present in
3599 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3600 Returns the new resulting string. OPT is removed from
3604 do_option (int *target_options
, char *ret
,
3605 int opt
, char *opt_str
)
3607 if ((*target_options
& opt
) != 0)
3609 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3610 *target_options
&= ~opt
;
3617 target_options_to_string (int target_options
)
3621 #define DO_TARG_OPTION(OPT) \
3622 ret = do_option (&target_options, ret, OPT, #OPT)
3624 DO_TARG_OPTION (TARGET_WNOHANG
);
3626 if (target_options
!= 0)
3627 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3635 debug_print_register (const char * func
,
3636 struct regcache
*regcache
, int regno
)
3638 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3640 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3641 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3642 && gdbarch_register_name (gdbarch
, regno
) != NULL
3643 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3644 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3645 gdbarch_register_name (gdbarch
, regno
));
3647 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3648 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3650 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3651 int i
, size
= register_size (gdbarch
, regno
);
3652 gdb_byte buf
[MAX_REGISTER_SIZE
];
3654 regcache_raw_collect (regcache
, regno
, buf
);
3655 fprintf_unfiltered (gdb_stdlog
, " = ");
3656 for (i
= 0; i
< size
; i
++)
3658 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3660 if (size
<= sizeof (LONGEST
))
3662 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3664 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3665 core_addr_to_string_nz (val
), plongest (val
));
3668 fprintf_unfiltered (gdb_stdlog
, "\n");
3672 target_fetch_registers (struct regcache
*regcache
, int regno
)
3674 current_target
.to_fetch_registers (¤t_target
, regcache
, regno
);
3676 debug_print_register ("target_fetch_registers", regcache
, regno
);
3680 target_store_registers (struct regcache
*regcache
, int regno
)
3682 struct target_ops
*t
;
3684 if (!may_write_registers
)
3685 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3687 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3690 debug_print_register ("target_store_registers", regcache
, regno
);
3695 target_core_of_thread (ptid_t ptid
)
3697 int retval
= current_target
.to_core_of_thread (¤t_target
, ptid
);
3700 fprintf_unfiltered (gdb_stdlog
,
3701 "target_core_of_thread (%d) = %d\n",
3702 ptid_get_pid (ptid
), retval
);
3707 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3709 int retval
= current_target
.to_verify_memory (¤t_target
,
3710 data
, memaddr
, size
);
3713 fprintf_unfiltered (gdb_stdlog
,
3714 "target_verify_memory (%s, %s) = %d\n",
3715 paddress (target_gdbarch (), memaddr
),
3721 /* The documentation for this function is in its prototype declaration in
3725 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3729 ret
= current_target
.to_insert_mask_watchpoint (¤t_target
,
3733 fprintf_unfiltered (gdb_stdlog
, "\
3734 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3735 core_addr_to_string (addr
),
3736 core_addr_to_string (mask
), rw
, ret
);
3741 /* The documentation for this function is in its prototype declaration in
3745 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3749 ret
= current_target
.to_remove_mask_watchpoint (¤t_target
,
3753 fprintf_unfiltered (gdb_stdlog
, "\
3754 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3755 core_addr_to_string (addr
),
3756 core_addr_to_string (mask
), rw
, ret
);
3761 /* The documentation for this function is in its prototype declaration
3765 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
3767 return current_target
.to_masked_watch_num_registers (¤t_target
,
3771 /* The documentation for this function is in its prototype declaration
3775 target_ranged_break_num_registers (void)
3777 return current_target
.to_ranged_break_num_registers (¤t_target
);
3782 struct btrace_target_info
*
3783 target_enable_btrace (ptid_t ptid
)
3785 struct target_ops
*t
;
3787 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3788 if (t
->to_enable_btrace
!= NULL
)
3789 return t
->to_enable_btrace (t
, ptid
);
3798 target_disable_btrace (struct btrace_target_info
*btinfo
)
3800 struct target_ops
*t
;
3802 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3803 if (t
->to_disable_btrace
!= NULL
)
3805 t
->to_disable_btrace (t
, btinfo
);
3815 target_teardown_btrace (struct btrace_target_info
*btinfo
)
3817 struct target_ops
*t
;
3819 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3820 if (t
->to_teardown_btrace
!= NULL
)
3822 t
->to_teardown_btrace (t
, btinfo
);
3832 target_read_btrace (VEC (btrace_block_s
) **btrace
,
3833 struct btrace_target_info
*btinfo
,
3834 enum btrace_read_type type
)
3836 struct target_ops
*t
;
3838 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3839 if (t
->to_read_btrace
!= NULL
)
3840 return t
->to_read_btrace (t
, btrace
, btinfo
, type
);
3843 return BTRACE_ERR_NOT_SUPPORTED
;
3849 target_stop_recording (void)
3851 struct target_ops
*t
;
3853 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3854 if (t
->to_stop_recording
!= NULL
)
3856 t
->to_stop_recording (t
);
3860 /* This is optional. */
3866 target_info_record (void)
3868 struct target_ops
*t
;
3870 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3871 if (t
->to_info_record
!= NULL
)
3873 t
->to_info_record (t
);
3883 target_save_record (const char *filename
)
3885 current_target
.to_save_record (¤t_target
, filename
);
3891 target_supports_delete_record (void)
3893 struct target_ops
*t
;
3895 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3896 if (t
->to_delete_record
!= NULL
)
3905 target_delete_record (void)
3907 current_target
.to_delete_record (¤t_target
);
3913 target_record_is_replaying (void)
3915 return current_target
.to_record_is_replaying (¤t_target
);
3921 target_goto_record_begin (void)
3923 current_target
.to_goto_record_begin (¤t_target
);
3929 target_goto_record_end (void)
3931 current_target
.to_goto_record_end (¤t_target
);
3937 target_goto_record (ULONGEST insn
)
3939 current_target
.to_goto_record (¤t_target
, insn
);
3945 target_insn_history (int size
, int flags
)
3947 current_target
.to_insn_history (¤t_target
, size
, flags
);
3953 target_insn_history_from (ULONGEST from
, int size
, int flags
)
3955 current_target
.to_insn_history_from (¤t_target
, from
, size
, flags
);
3961 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
3963 current_target
.to_insn_history_range (¤t_target
, begin
, end
, flags
);
3969 target_call_history (int size
, int flags
)
3971 current_target
.to_call_history (¤t_target
, size
, flags
);
3977 target_call_history_from (ULONGEST begin
, int size
, int flags
)
3979 current_target
.to_call_history_from (¤t_target
, begin
, size
, flags
);
3985 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
3987 current_target
.to_call_history_range (¤t_target
, begin
, end
, flags
);
3991 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
3993 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
3995 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4000 const struct frame_unwind
*
4001 target_get_unwinder (void)
4003 struct target_ops
*t
;
4005 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4006 if (t
->to_get_unwinder
!= NULL
)
4007 return t
->to_get_unwinder
;
4014 const struct frame_unwind
*
4015 target_get_tailcall_unwinder (void)
4017 struct target_ops
*t
;
4019 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4020 if (t
->to_get_tailcall_unwinder
!= NULL
)
4021 return t
->to_get_tailcall_unwinder
;
4029 forward_target_decr_pc_after_break (struct target_ops
*ops
,
4030 struct gdbarch
*gdbarch
)
4032 for (; ops
!= NULL
; ops
= ops
->beneath
)
4033 if (ops
->to_decr_pc_after_break
!= NULL
)
4034 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
4036 return gdbarch_decr_pc_after_break (gdbarch
);
4042 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
4044 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
4048 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4049 int write
, struct mem_attrib
*attrib
,
4050 struct target_ops
*target
)
4054 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4057 fprintf_unfiltered (gdb_stdlog
,
4058 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4059 paddress (target_gdbarch (), memaddr
), len
,
4060 write
? "write" : "read", retval
);
4066 fputs_unfiltered (", bytes =", gdb_stdlog
);
4067 for (i
= 0; i
< retval
; i
++)
4069 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4071 if (targetdebug
< 2 && i
> 0)
4073 fprintf_unfiltered (gdb_stdlog
, " ...");
4076 fprintf_unfiltered (gdb_stdlog
, "\n");
4079 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4083 fputc_unfiltered ('\n', gdb_stdlog
);
4089 debug_to_files_info (struct target_ops
*target
)
4091 debug_target
.to_files_info (target
);
4093 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4097 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4098 struct bp_target_info
*bp_tgt
)
4102 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4104 fprintf_unfiltered (gdb_stdlog
,
4105 "target_insert_breakpoint (%s, xxx) = %ld\n",
4106 core_addr_to_string (bp_tgt
->placed_address
),
4107 (unsigned long) retval
);
4112 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4113 struct bp_target_info
*bp_tgt
)
4117 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4119 fprintf_unfiltered (gdb_stdlog
,
4120 "target_remove_breakpoint (%s, xxx) = %ld\n",
4121 core_addr_to_string (bp_tgt
->placed_address
),
4122 (unsigned long) retval
);
4127 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4128 int type
, int cnt
, int from_tty
)
4132 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4133 type
, cnt
, from_tty
);
4135 fprintf_unfiltered (gdb_stdlog
,
4136 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4137 (unsigned long) type
,
4138 (unsigned long) cnt
,
4139 (unsigned long) from_tty
,
4140 (unsigned long) retval
);
4145 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4146 CORE_ADDR addr
, int len
)
4150 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4153 fprintf_unfiltered (gdb_stdlog
,
4154 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4155 core_addr_to_string (addr
), (unsigned long) len
,
4156 core_addr_to_string (retval
));
4161 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4162 CORE_ADDR addr
, int len
, int rw
,
4163 struct expression
*cond
)
4167 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4171 fprintf_unfiltered (gdb_stdlog
,
4172 "target_can_accel_watchpoint_condition "
4173 "(%s, %d, %d, %s) = %ld\n",
4174 core_addr_to_string (addr
), len
, rw
,
4175 host_address_to_string (cond
), (unsigned long) retval
);
4180 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4184 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4186 fprintf_unfiltered (gdb_stdlog
,
4187 "target_stopped_by_watchpoint () = %ld\n",
4188 (unsigned long) retval
);
4193 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4197 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4199 fprintf_unfiltered (gdb_stdlog
,
4200 "target_stopped_data_address ([%s]) = %ld\n",
4201 core_addr_to_string (*addr
),
4202 (unsigned long)retval
);
4207 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4209 CORE_ADDR start
, int length
)
4213 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4216 fprintf_filtered (gdb_stdlog
,
4217 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4218 core_addr_to_string (addr
), core_addr_to_string (start
),
4224 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4225 struct gdbarch
*gdbarch
,
4226 struct bp_target_info
*bp_tgt
)
4230 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4233 fprintf_unfiltered (gdb_stdlog
,
4234 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4235 core_addr_to_string (bp_tgt
->placed_address
),
4236 (unsigned long) retval
);
4241 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4242 struct gdbarch
*gdbarch
,
4243 struct bp_target_info
*bp_tgt
)
4247 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4250 fprintf_unfiltered (gdb_stdlog
,
4251 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4252 core_addr_to_string (bp_tgt
->placed_address
),
4253 (unsigned long) retval
);
4258 debug_to_insert_watchpoint (struct target_ops
*self
,
4259 CORE_ADDR addr
, int len
, int type
,
4260 struct expression
*cond
)
4264 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4265 addr
, len
, type
, cond
);
4267 fprintf_unfiltered (gdb_stdlog
,
4268 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4269 core_addr_to_string (addr
), len
, type
,
4270 host_address_to_string (cond
), (unsigned long) retval
);
4275 debug_to_remove_watchpoint (struct target_ops
*self
,
4276 CORE_ADDR addr
, int len
, int type
,
4277 struct expression
*cond
)
4281 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4282 addr
, len
, type
, cond
);
4284 fprintf_unfiltered (gdb_stdlog
,
4285 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4286 core_addr_to_string (addr
), len
, type
,
4287 host_address_to_string (cond
), (unsigned long) retval
);
4292 debug_to_terminal_init (struct target_ops
*self
)
4294 debug_target
.to_terminal_init (&debug_target
);
4296 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4300 debug_to_terminal_inferior (struct target_ops
*self
)
4302 debug_target
.to_terminal_inferior (&debug_target
);
4304 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4308 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4310 debug_target
.to_terminal_ours_for_output (&debug_target
);
4312 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4316 debug_to_terminal_ours (struct target_ops
*self
)
4318 debug_target
.to_terminal_ours (&debug_target
);
4320 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4324 debug_to_terminal_save_ours (struct target_ops
*self
)
4326 debug_target
.to_terminal_save_ours (&debug_target
);
4328 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4332 debug_to_terminal_info (struct target_ops
*self
,
4333 const char *arg
, int from_tty
)
4335 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4337 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4342 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4344 debug_target
.to_load (&debug_target
, args
, from_tty
);
4346 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4350 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4352 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4354 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4355 ptid_get_pid (ptid
));
4359 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4363 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4365 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4372 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4376 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4378 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4385 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4389 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4391 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4398 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4402 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4404 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4411 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4415 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4417 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4424 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4428 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4430 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4437 debug_to_has_exited (struct target_ops
*self
,
4438 int pid
, int wait_status
, int *exit_status
)
4442 has_exited
= debug_target
.to_has_exited (&debug_target
,
4443 pid
, wait_status
, exit_status
);
4445 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4446 pid
, wait_status
, *exit_status
, has_exited
);
4452 debug_to_can_run (struct target_ops
*self
)
4456 retval
= debug_target
.to_can_run (&debug_target
);
4458 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4463 static struct gdbarch
*
4464 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4466 struct gdbarch
*retval
;
4468 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4470 fprintf_unfiltered (gdb_stdlog
,
4471 "target_thread_architecture (%s) = %s [%s]\n",
4472 target_pid_to_str (ptid
),
4473 host_address_to_string (retval
),
4474 gdbarch_bfd_arch_info (retval
)->printable_name
);
4479 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4481 debug_target
.to_stop (&debug_target
, ptid
);
4483 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4484 target_pid_to_str (ptid
));
4488 debug_to_rcmd (struct target_ops
*self
, char *command
,
4489 struct ui_file
*outbuf
)
4491 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4492 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4496 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4500 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4502 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4509 setup_target_debug (void)
4511 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4513 current_target
.to_open
= debug_to_open
;
4514 current_target
.to_post_attach
= debug_to_post_attach
;
4515 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4516 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4517 current_target
.to_files_info
= debug_to_files_info
;
4518 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4519 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4520 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4521 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4522 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4523 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4524 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4525 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4526 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4527 current_target
.to_watchpoint_addr_within_range
4528 = debug_to_watchpoint_addr_within_range
;
4529 current_target
.to_region_ok_for_hw_watchpoint
4530 = debug_to_region_ok_for_hw_watchpoint
;
4531 current_target
.to_can_accel_watchpoint_condition
4532 = debug_to_can_accel_watchpoint_condition
;
4533 current_target
.to_terminal_init
= debug_to_terminal_init
;
4534 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4535 current_target
.to_terminal_ours_for_output
4536 = debug_to_terminal_ours_for_output
;
4537 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4538 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4539 current_target
.to_terminal_info
= debug_to_terminal_info
;
4540 current_target
.to_load
= debug_to_load
;
4541 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4542 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4543 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4544 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4545 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4546 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4547 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4548 current_target
.to_has_exited
= debug_to_has_exited
;
4549 current_target
.to_can_run
= debug_to_can_run
;
4550 current_target
.to_stop
= debug_to_stop
;
4551 current_target
.to_rcmd
= debug_to_rcmd
;
4552 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4553 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4557 static char targ_desc
[] =
4558 "Names of targets and files being debugged.\nShows the entire \
4559 stack of targets currently in use (including the exec-file,\n\
4560 core-file, and process, if any), as well as the symbol file name.";
4563 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4565 error (_("\"monitor\" command not supported by this target."));
4569 do_monitor_command (char *cmd
,
4572 target_rcmd (cmd
, gdb_stdtarg
);
4575 /* Print the name of each layers of our target stack. */
4578 maintenance_print_target_stack (char *cmd
, int from_tty
)
4580 struct target_ops
*t
;
4582 printf_filtered (_("The current target stack is:\n"));
4584 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4586 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4590 /* Controls if async mode is permitted. */
4591 int target_async_permitted
= 0;
4593 /* The set command writes to this variable. If the inferior is
4594 executing, target_async_permitted is *not* updated. */
4595 static int target_async_permitted_1
= 0;
4598 set_target_async_command (char *args
, int from_tty
,
4599 struct cmd_list_element
*c
)
4601 if (have_live_inferiors ())
4603 target_async_permitted_1
= target_async_permitted
;
4604 error (_("Cannot change this setting while the inferior is running."));
4607 target_async_permitted
= target_async_permitted_1
;
4611 show_target_async_command (struct ui_file
*file
, int from_tty
,
4612 struct cmd_list_element
*c
,
4615 fprintf_filtered (file
,
4616 _("Controlling the inferior in "
4617 "asynchronous mode is %s.\n"), value
);
4620 /* Temporary copies of permission settings. */
4622 static int may_write_registers_1
= 1;
4623 static int may_write_memory_1
= 1;
4624 static int may_insert_breakpoints_1
= 1;
4625 static int may_insert_tracepoints_1
= 1;
4626 static int may_insert_fast_tracepoints_1
= 1;
4627 static int may_stop_1
= 1;
4629 /* Make the user-set values match the real values again. */
4632 update_target_permissions (void)
4634 may_write_registers_1
= may_write_registers
;
4635 may_write_memory_1
= may_write_memory
;
4636 may_insert_breakpoints_1
= may_insert_breakpoints
;
4637 may_insert_tracepoints_1
= may_insert_tracepoints
;
4638 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4639 may_stop_1
= may_stop
;
4642 /* The one function handles (most of) the permission flags in the same
4646 set_target_permissions (char *args
, int from_tty
,
4647 struct cmd_list_element
*c
)
4649 if (target_has_execution
)
4651 update_target_permissions ();
4652 error (_("Cannot change this setting while the inferior is running."));
4655 /* Make the real values match the user-changed values. */
4656 may_write_registers
= may_write_registers_1
;
4657 may_insert_breakpoints
= may_insert_breakpoints_1
;
4658 may_insert_tracepoints
= may_insert_tracepoints_1
;
4659 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4660 may_stop
= may_stop_1
;
4661 update_observer_mode ();
4664 /* Set memory write permission independently of observer mode. */
4667 set_write_memory_permission (char *args
, int from_tty
,
4668 struct cmd_list_element
*c
)
4670 /* Make the real values match the user-changed values. */
4671 may_write_memory
= may_write_memory_1
;
4672 update_observer_mode ();
4677 initialize_targets (void)
4679 init_dummy_target ();
4680 push_target (&dummy_target
);
4682 add_info ("target", target_info
, targ_desc
);
4683 add_info ("files", target_info
, targ_desc
);
4685 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
4686 Set target debugging."), _("\
4687 Show target debugging."), _("\
4688 When non-zero, target debugging is enabled. Higher numbers are more\n\
4689 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4693 &setdebuglist
, &showdebuglist
);
4695 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
4696 &trust_readonly
, _("\
4697 Set mode for reading from readonly sections."), _("\
4698 Show mode for reading from readonly sections."), _("\
4699 When this mode is on, memory reads from readonly sections (such as .text)\n\
4700 will be read from the object file instead of from the target. This will\n\
4701 result in significant performance improvement for remote targets."),
4703 show_trust_readonly
,
4704 &setlist
, &showlist
);
4706 add_com ("monitor", class_obscure
, do_monitor_command
,
4707 _("Send a command to the remote monitor (remote targets only)."));
4709 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
4710 _("Print the name of each layer of the internal target stack."),
4711 &maintenanceprintlist
);
4713 add_setshow_boolean_cmd ("target-async", no_class
,
4714 &target_async_permitted_1
, _("\
4715 Set whether gdb controls the inferior in asynchronous mode."), _("\
4716 Show whether gdb controls the inferior in asynchronous mode."), _("\
4717 Tells gdb whether to control the inferior in asynchronous mode."),
4718 set_target_async_command
,
4719 show_target_async_command
,
4723 add_setshow_boolean_cmd ("may-write-registers", class_support
,
4724 &may_write_registers_1
, _("\
4725 Set permission to write into registers."), _("\
4726 Show permission to write into registers."), _("\
4727 When this permission is on, GDB may write into the target's registers.\n\
4728 Otherwise, any sort of write attempt will result in an error."),
4729 set_target_permissions
, NULL
,
4730 &setlist
, &showlist
);
4732 add_setshow_boolean_cmd ("may-write-memory", class_support
,
4733 &may_write_memory_1
, _("\
4734 Set permission to write into target memory."), _("\
4735 Show permission to write into target memory."), _("\
4736 When this permission is on, GDB may write into the target's memory.\n\
4737 Otherwise, any sort of write attempt will result in an error."),
4738 set_write_memory_permission
, NULL
,
4739 &setlist
, &showlist
);
4741 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
4742 &may_insert_breakpoints_1
, _("\
4743 Set permission to insert breakpoints in the target."), _("\
4744 Show permission to insert breakpoints in the target."), _("\
4745 When this permission is on, GDB may insert breakpoints in the program.\n\
4746 Otherwise, any sort of insertion attempt will result in an error."),
4747 set_target_permissions
, NULL
,
4748 &setlist
, &showlist
);
4750 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
4751 &may_insert_tracepoints_1
, _("\
4752 Set permission to insert tracepoints in the target."), _("\
4753 Show permission to insert tracepoints in the target."), _("\
4754 When this permission is on, GDB may insert tracepoints in the program.\n\
4755 Otherwise, any sort of insertion attempt will result in an error."),
4756 set_target_permissions
, NULL
,
4757 &setlist
, &showlist
);
4759 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
4760 &may_insert_fast_tracepoints_1
, _("\
4761 Set permission to insert fast tracepoints in the target."), _("\
4762 Show permission to insert fast tracepoints in the target."), _("\
4763 When this permission is on, GDB may insert fast tracepoints.\n\
4764 Otherwise, any sort of insertion attempt will result in an error."),
4765 set_target_permissions
, NULL
,
4766 &setlist
, &showlist
);
4768 add_setshow_boolean_cmd ("may-interrupt", class_support
,
4770 Set permission to interrupt or signal the target."), _("\
4771 Show permission to interrupt or signal the target."), _("\
4772 When this permission is on, GDB may interrupt/stop the target's execution.\n\
4773 Otherwise, any attempt to interrupt or stop will be ignored."),
4774 set_target_permissions
, NULL
,
4775 &setlist
, &showlist
);