1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2014 Free Software Foundation, Inc.
5 Contributed by Cygnus Support.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "target-dcache.h"
36 #include "gdb_assert.h"
38 #include "exceptions.h"
39 #include "target-descriptions.h"
40 #include "gdbthread.h"
43 #include "inline-frame.h"
44 #include "tracepoint.h"
45 #include "gdb/fileio.h"
48 static void target_info (char *, int);
50 static void default_terminal_info (struct target_ops
*, const char *, int);
52 static int default_watchpoint_addr_within_range (struct target_ops
*,
53 CORE_ADDR
, CORE_ADDR
, int);
55 static int default_region_ok_for_hw_watchpoint (struct target_ops
*,
58 static void default_rcmd (struct target_ops
*, char *, struct ui_file
*);
60 static ptid_t
default_get_ada_task_ptid (struct target_ops
*self
,
63 static void tcomplain (void) ATTRIBUTE_NORETURN
;
65 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
67 static int return_zero (void);
69 void target_ignore (void);
71 static void target_command (char *, int);
73 static struct target_ops
*find_default_run_target (char *);
75 static target_xfer_partial_ftype default_xfer_partial
;
77 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
80 static int dummy_find_memory_regions (struct target_ops
*self
,
81 find_memory_region_ftype ignore1
,
84 static char *dummy_make_corefile_notes (struct target_ops
*self
,
85 bfd
*ignore1
, int *ignore2
);
87 static int find_default_can_async_p (struct target_ops
*ignore
);
89 static int find_default_is_async_p (struct target_ops
*ignore
);
91 static enum exec_direction_kind default_execution_direction
92 (struct target_ops
*self
);
94 #include "target-delegates.c"
96 static void init_dummy_target (void);
98 static struct target_ops debug_target
;
100 static void debug_to_open (char *, int);
102 static void debug_to_prepare_to_store (struct target_ops
*self
,
105 static void debug_to_files_info (struct target_ops
*);
107 static int debug_to_insert_breakpoint (struct target_ops
*, struct gdbarch
*,
108 struct bp_target_info
*);
110 static int debug_to_remove_breakpoint (struct target_ops
*, struct gdbarch
*,
111 struct bp_target_info
*);
113 static int debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
116 static int debug_to_insert_hw_breakpoint (struct target_ops
*self
,
118 struct bp_target_info
*);
120 static int debug_to_remove_hw_breakpoint (struct target_ops
*self
,
122 struct bp_target_info
*);
124 static int debug_to_insert_watchpoint (struct target_ops
*self
,
126 struct expression
*);
128 static int debug_to_remove_watchpoint (struct target_ops
*self
,
130 struct expression
*);
132 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
134 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
135 CORE_ADDR
, CORE_ADDR
, int);
137 static int debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
140 static int debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
142 struct expression
*);
144 static void debug_to_terminal_init (struct target_ops
*self
);
146 static void debug_to_terminal_inferior (struct target_ops
*self
);
148 static void debug_to_terminal_ours_for_output (struct target_ops
*self
);
150 static void debug_to_terminal_save_ours (struct target_ops
*self
);
152 static void debug_to_terminal_ours (struct target_ops
*self
);
154 static void debug_to_load (struct target_ops
*self
, char *, int);
156 static int debug_to_can_run (struct target_ops
*self
);
158 static void debug_to_stop (struct target_ops
*self
, ptid_t
);
160 /* Pointer to array of target architecture structures; the size of the
161 array; the current index into the array; the allocated size of the
163 struct target_ops
**target_structs
;
164 unsigned target_struct_size
;
165 unsigned target_struct_allocsize
;
166 #define DEFAULT_ALLOCSIZE 10
168 /* The initial current target, so that there is always a semi-valid
171 static struct target_ops dummy_target
;
173 /* Top of target stack. */
175 static struct target_ops
*target_stack
;
177 /* The target structure we are currently using to talk to a process
178 or file or whatever "inferior" we have. */
180 struct target_ops current_target
;
182 /* Command list for target. */
184 static struct cmd_list_element
*targetlist
= NULL
;
186 /* Nonzero if we should trust readonly sections from the
187 executable when reading memory. */
189 static int trust_readonly
= 0;
191 /* Nonzero if we should show true memory content including
192 memory breakpoint inserted by gdb. */
194 static int show_memory_breakpoints
= 0;
196 /* These globals control whether GDB attempts to perform these
197 operations; they are useful for targets that need to prevent
198 inadvertant disruption, such as in non-stop mode. */
200 int may_write_registers
= 1;
202 int may_write_memory
= 1;
204 int may_insert_breakpoints
= 1;
206 int may_insert_tracepoints
= 1;
208 int may_insert_fast_tracepoints
= 1;
212 /* Non-zero if we want to see trace of target level stuff. */
214 static unsigned int targetdebug
= 0;
216 show_targetdebug (struct ui_file
*file
, int from_tty
,
217 struct cmd_list_element
*c
, const char *value
)
219 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
222 static void setup_target_debug (void);
224 /* The user just typed 'target' without the name of a target. */
227 target_command (char *arg
, int from_tty
)
229 fputs_filtered ("Argument required (target name). Try `help target'\n",
233 /* Default target_has_* methods for process_stratum targets. */
236 default_child_has_all_memory (struct target_ops
*ops
)
238 /* If no inferior selected, then we can't read memory here. */
239 if (ptid_equal (inferior_ptid
, null_ptid
))
246 default_child_has_memory (struct target_ops
*ops
)
248 /* If no inferior selected, then we can't read memory here. */
249 if (ptid_equal (inferior_ptid
, null_ptid
))
256 default_child_has_stack (struct target_ops
*ops
)
258 /* If no inferior selected, there's no stack. */
259 if (ptid_equal (inferior_ptid
, null_ptid
))
266 default_child_has_registers (struct target_ops
*ops
)
268 /* Can't read registers from no inferior. */
269 if (ptid_equal (inferior_ptid
, null_ptid
))
276 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
278 /* If there's no thread selected, then we can't make it run through
280 if (ptid_equal (the_ptid
, null_ptid
))
288 target_has_all_memory_1 (void)
290 struct target_ops
*t
;
292 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
293 if (t
->to_has_all_memory (t
))
300 target_has_memory_1 (void)
302 struct target_ops
*t
;
304 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
305 if (t
->to_has_memory (t
))
312 target_has_stack_1 (void)
314 struct target_ops
*t
;
316 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
317 if (t
->to_has_stack (t
))
324 target_has_registers_1 (void)
326 struct target_ops
*t
;
328 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
329 if (t
->to_has_registers (t
))
336 target_has_execution_1 (ptid_t the_ptid
)
338 struct target_ops
*t
;
340 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
341 if (t
->to_has_execution (t
, the_ptid
))
348 target_has_execution_current (void)
350 return target_has_execution_1 (inferior_ptid
);
353 /* Complete initialization of T. This ensures that various fields in
354 T are set, if needed by the target implementation. */
357 complete_target_initialization (struct target_ops
*t
)
359 /* Provide default values for all "must have" methods. */
360 if (t
->to_xfer_partial
== NULL
)
361 t
->to_xfer_partial
= default_xfer_partial
;
363 if (t
->to_has_all_memory
== NULL
)
364 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
366 if (t
->to_has_memory
== NULL
)
367 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
369 if (t
->to_has_stack
== NULL
)
370 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
372 if (t
->to_has_registers
== NULL
)
373 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
375 if (t
->to_has_execution
== NULL
)
376 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
378 install_delegators (t
);
381 /* Add possible target architecture T to the list and add a new
382 command 'target T->to_shortname'. Set COMPLETER as the command's
383 completer if not NULL. */
386 add_target_with_completer (struct target_ops
*t
,
387 completer_ftype
*completer
)
389 struct cmd_list_element
*c
;
391 complete_target_initialization (t
);
395 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
396 target_structs
= (struct target_ops
**) xmalloc
397 (target_struct_allocsize
* sizeof (*target_structs
));
399 if (target_struct_size
>= target_struct_allocsize
)
401 target_struct_allocsize
*= 2;
402 target_structs
= (struct target_ops
**)
403 xrealloc ((char *) target_structs
,
404 target_struct_allocsize
* sizeof (*target_structs
));
406 target_structs
[target_struct_size
++] = t
;
408 if (targetlist
== NULL
)
409 add_prefix_cmd ("target", class_run
, target_command
, _("\
410 Connect to a target machine or process.\n\
411 The first argument is the type or protocol of the target machine.\n\
412 Remaining arguments are interpreted by the target protocol. For more\n\
413 information on the arguments for a particular protocol, type\n\
414 `help target ' followed by the protocol name."),
415 &targetlist
, "target ", 0, &cmdlist
);
416 c
= add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
,
418 if (completer
!= NULL
)
419 set_cmd_completer (c
, completer
);
422 /* Add a possible target architecture to the list. */
425 add_target (struct target_ops
*t
)
427 add_target_with_completer (t
, NULL
);
433 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
435 struct cmd_list_element
*c
;
438 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
440 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
441 alt
= xstrprintf ("target %s", t
->to_shortname
);
442 deprecate_cmd (c
, alt
);
455 struct target_ops
*t
;
457 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
458 if (t
->to_kill
!= NULL
)
461 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
471 target_load (char *arg
, int from_tty
)
473 target_dcache_invalidate ();
474 (*current_target
.to_load
) (¤t_target
, arg
, from_tty
);
478 target_create_inferior (char *exec_file
, char *args
,
479 char **env
, int from_tty
)
481 struct target_ops
*t
;
483 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
485 if (t
->to_create_inferior
!= NULL
)
487 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
489 fprintf_unfiltered (gdb_stdlog
,
490 "target_create_inferior (%s, %s, xxx, %d)\n",
491 exec_file
, args
, from_tty
);
496 internal_error (__FILE__
, __LINE__
,
497 _("could not find a target to create inferior"));
501 target_terminal_inferior (void)
503 /* A background resume (``run&'') should leave GDB in control of the
504 terminal. Use target_can_async_p, not target_is_async_p, since at
505 this point the target is not async yet. However, if sync_execution
506 is not set, we know it will become async prior to resume. */
507 if (target_can_async_p () && !sync_execution
)
510 /* If GDB is resuming the inferior in the foreground, install
511 inferior's terminal modes. */
512 (*current_target
.to_terminal_inferior
) (¤t_target
);
516 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
517 struct target_ops
*t
)
519 errno
= EIO
; /* Can't read/write this location. */
520 return 0; /* No bytes handled. */
526 error (_("You can't do that when your target is `%s'"),
527 current_target
.to_shortname
);
533 error (_("You can't do that without a process to debug."));
537 default_terminal_info (struct target_ops
*self
, const char *args
, int from_tty
)
539 printf_unfiltered (_("No saved terminal information.\n"));
542 /* A default implementation for the to_get_ada_task_ptid target method.
544 This function builds the PTID by using both LWP and TID as part of
545 the PTID lwp and tid elements. The pid used is the pid of the
549 default_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long tid
)
551 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
554 static enum exec_direction_kind
555 default_execution_direction (struct target_ops
*self
)
557 if (!target_can_execute_reverse
)
559 else if (!target_can_async_p ())
562 gdb_assert_not_reached ("\
563 to_execution_direction must be implemented for reverse async");
566 /* Go through the target stack from top to bottom, copying over zero
567 entries in current_target, then filling in still empty entries. In
568 effect, we are doing class inheritance through the pushed target
571 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
572 is currently implemented, is that it discards any knowledge of
573 which target an inherited method originally belonged to.
574 Consequently, new new target methods should instead explicitly and
575 locally search the target stack for the target that can handle the
579 update_current_target (void)
581 struct target_ops
*t
;
583 /* First, reset current's contents. */
584 memset (¤t_target
, 0, sizeof (current_target
));
586 /* Install the delegators. */
587 install_delegators (¤t_target
);
589 #define INHERIT(FIELD, TARGET) \
590 if (!current_target.FIELD) \
591 current_target.FIELD = (TARGET)->FIELD
593 for (t
= target_stack
; t
; t
= t
->beneath
)
595 INHERIT (to_shortname
, t
);
596 INHERIT (to_longname
, t
);
598 /* Do not inherit to_open. */
599 /* Do not inherit to_close. */
600 /* Do not inherit to_attach. */
601 /* Do not inherit to_post_attach. */
602 INHERIT (to_attach_no_wait
, t
);
603 /* Do not inherit to_detach. */
604 /* Do not inherit to_disconnect. */
605 /* Do not inherit to_resume. */
606 /* Do not inherit to_wait. */
607 /* Do not inherit to_fetch_registers. */
608 /* Do not inherit to_store_registers. */
609 /* Do not inherit to_prepare_to_store. */
610 INHERIT (deprecated_xfer_memory
, t
);
611 /* Do not inherit to_files_info. */
612 /* Do not inherit to_insert_breakpoint. */
613 /* Do not inherit to_remove_breakpoint. */
614 /* Do not inherit to_can_use_hw_breakpoint. */
615 /* Do not inherit to_insert_hw_breakpoint. */
616 /* Do not inherit to_remove_hw_breakpoint. */
617 /* Do not inherit to_ranged_break_num_registers. */
618 /* Do not inherit to_insert_watchpoint. */
619 /* Do not inherit to_remove_watchpoint. */
620 /* Do not inherit to_insert_mask_watchpoint. */
621 /* Do not inherit to_remove_mask_watchpoint. */
622 /* Do not inherit to_stopped_data_address. */
623 INHERIT (to_have_steppable_watchpoint
, t
);
624 INHERIT (to_have_continuable_watchpoint
, t
);
625 /* Do not inherit to_stopped_by_watchpoint. */
626 /* Do not inherit to_watchpoint_addr_within_range. */
627 /* Do not inherit to_region_ok_for_hw_watchpoint. */
628 /* Do not inherit to_can_accel_watchpoint_condition. */
629 /* Do not inherit to_masked_watch_num_registers. */
630 /* Do not inherit to_terminal_init. */
631 /* Do not inherit to_terminal_inferior. */
632 /* Do not inherit to_terminal_ours_for_output. */
633 /* Do not inherit to_terminal_ours. */
634 /* Do not inherit to_terminal_save_ours. */
635 /* Do not inherit to_terminal_info. */
636 /* Do not inherit to_kill. */
637 /* Do not inherit to_load. */
638 /* Do no inherit to_create_inferior. */
639 /* Do not inherit to_post_startup_inferior. */
640 /* Do not inherit to_insert_fork_catchpoint. */
641 /* Do not inherit to_remove_fork_catchpoint. */
642 /* Do not inherit to_insert_vfork_catchpoint. */
643 /* Do not inherit to_remove_vfork_catchpoint. */
644 /* Do not inherit to_follow_fork. */
645 /* Do not inherit to_insert_exec_catchpoint. */
646 /* Do not inherit to_remove_exec_catchpoint. */
647 /* Do not inherit to_set_syscall_catchpoint. */
648 /* Do not inherit to_has_exited. */
649 /* Do not inherit to_mourn_inferior. */
650 INHERIT (to_can_run
, t
);
651 /* Do not inherit to_pass_signals. */
652 /* Do not inherit to_program_signals. */
653 /* Do not inherit to_thread_alive. */
654 /* Do not inherit to_find_new_threads. */
655 /* Do not inherit to_pid_to_str. */
656 /* Do not inherit to_extra_thread_info. */
657 /* Do not inherit to_thread_name. */
658 /* Do not inherit to_stop. */
659 /* Do not inherit to_xfer_partial. */
660 /* Do not inherit to_rcmd. */
661 /* Do not inherit to_pid_to_exec_file. */
662 /* Do not inherit to_log_command. */
663 INHERIT (to_stratum
, t
);
664 /* Do not inherit to_has_all_memory. */
665 /* Do not inherit to_has_memory. */
666 /* Do not inherit to_has_stack. */
667 /* Do not inherit to_has_registers. */
668 /* Do not inherit to_has_execution. */
669 INHERIT (to_has_thread_control
, t
);
670 /* Do not inherit to_can_async_p. */
671 /* Do not inherit to_is_async_p. */
672 /* Do not inherit to_async. */
673 /* Do not inherit to_find_memory_regions. */
674 /* Do not inherit to_make_corefile_notes. */
675 /* Do not inherit to_get_bookmark. */
676 /* Do not inherit to_goto_bookmark. */
677 /* Do not inherit to_get_thread_local_address. */
678 /* Do not inherit to_can_execute_reverse. */
679 /* Do not inherit to_execution_direction. */
680 /* Do not inherit to_thread_architecture. */
681 /* Do not inherit to_read_description. */
682 /* Do not inherit to_get_ada_task_ptid. */
683 /* Do not inherit to_search_memory. */
684 /* Do not inherit to_supports_multi_process. */
685 /* Do not inherit to_supports_enable_disable_tracepoint. */
686 /* Do not inherit to_supports_string_tracing. */
687 /* Do not inherit to_trace_init. */
688 /* Do not inherit to_download_tracepoint. */
689 /* Do not inherit to_can_download_tracepoint. */
690 /* Do not inherit to_download_trace_state_variable. */
691 /* Do not inherit to_enable_tracepoint. */
692 /* Do not inherit to_disable_tracepoint. */
693 /* Do not inherit to_trace_set_readonly_regions. */
694 /* Do not inherit to_trace_start. */
695 /* Do not inherit to_get_trace_status. */
696 /* Do not inherit to_get_tracepoint_status. */
697 /* Do not inherit to_trace_stop. */
698 /* Do not inherit to_trace_find. */
699 /* Do not inherit to_get_trace_state_variable_value. */
700 /* Do not inherit to_save_trace_data. */
701 /* Do not inherit to_upload_tracepoints. */
702 /* Do not inherit to_upload_trace_state_variables. */
703 /* Do not inherit to_get_raw_trace_data. */
704 /* Do not inherit to_get_min_fast_tracepoint_insn_len. */
705 /* Do not inherit to_set_disconnected_tracing. */
706 /* Do not inherit to_set_circular_trace_buffer. */
707 /* Do not inherit to_set_trace_buffer_size. */
708 /* Do not inherit to_set_trace_notes. */
709 /* Do not inherit to_get_tib_address. */
710 /* Do not inherit to_set_permissions. */
711 /* Do not inherit to_static_tracepoint_marker_at. */
712 /* Do not inherit to_static_tracepoint_markers_by_strid. */
713 /* Do not inherit to_traceframe_info. */
714 /* Do not inherit to_use_agent. */
715 /* Do not inherit to_can_use_agent. */
716 /* Do not inherit to_augmented_libraries_svr4_read. */
717 INHERIT (to_magic
, t
);
719 to_supports_evaluation_of_breakpoint_conditions. */
720 /* Do not inherit to_can_run_breakpoint_commands. */
721 /* Do not inherit to_memory_map. */
722 /* Do not inherit to_flash_erase. */
723 /* Do not inherit to_flash_done. */
727 /* Clean up a target struct so it no longer has any zero pointers in
728 it. Some entries are defaulted to a method that print an error,
729 others are hard-wired to a standard recursive default. */
731 #define de_fault(field, value) \
732 if (!current_target.field) \
733 current_target.field = value
736 (void (*) (char *, int))
739 (void (*) (struct target_ops
*))
741 de_fault (deprecated_xfer_memory
,
742 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
743 struct mem_attrib
*, struct target_ops
*))
745 de_fault (to_can_run
,
746 (int (*) (struct target_ops
*))
748 current_target
.to_read_description
= NULL
;
752 /* Finally, position the target-stack beneath the squashed
753 "current_target". That way code looking for a non-inherited
754 target method can quickly and simply find it. */
755 current_target
.beneath
= target_stack
;
758 setup_target_debug ();
761 /* Push a new target type into the stack of the existing target accessors,
762 possibly superseding some of the existing accessors.
764 Rather than allow an empty stack, we always have the dummy target at
765 the bottom stratum, so we can call the function vectors without
769 push_target (struct target_ops
*t
)
771 struct target_ops
**cur
;
773 /* Check magic number. If wrong, it probably means someone changed
774 the struct definition, but not all the places that initialize one. */
775 if (t
->to_magic
!= OPS_MAGIC
)
777 fprintf_unfiltered (gdb_stderr
,
778 "Magic number of %s target struct wrong\n",
780 internal_error (__FILE__
, __LINE__
,
781 _("failed internal consistency check"));
784 /* Find the proper stratum to install this target in. */
785 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
787 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
791 /* If there's already targets at this stratum, remove them. */
792 /* FIXME: cagney/2003-10-15: I think this should be popping all
793 targets to CUR, and not just those at this stratum level. */
794 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
796 /* There's already something at this stratum level. Close it,
797 and un-hook it from the stack. */
798 struct target_ops
*tmp
= (*cur
);
800 (*cur
) = (*cur
)->beneath
;
805 /* We have removed all targets in our stratum, now add the new one. */
809 update_current_target ();
812 /* Remove a target_ops vector from the stack, wherever it may be.
813 Return how many times it was removed (0 or 1). */
816 unpush_target (struct target_ops
*t
)
818 struct target_ops
**cur
;
819 struct target_ops
*tmp
;
821 if (t
->to_stratum
== dummy_stratum
)
822 internal_error (__FILE__
, __LINE__
,
823 _("Attempt to unpush the dummy target"));
825 /* Look for the specified target. Note that we assume that a target
826 can only occur once in the target stack. */
828 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
834 /* If we don't find target_ops, quit. Only open targets should be
839 /* Unchain the target. */
841 (*cur
) = (*cur
)->beneath
;
844 update_current_target ();
846 /* Finally close the target. Note we do this after unchaining, so
847 any target method calls from within the target_close
848 implementation don't end up in T anymore. */
855 pop_all_targets_above (enum strata above_stratum
)
857 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
859 if (!unpush_target (target_stack
))
861 fprintf_unfiltered (gdb_stderr
,
862 "pop_all_targets couldn't find target %s\n",
863 target_stack
->to_shortname
);
864 internal_error (__FILE__
, __LINE__
,
865 _("failed internal consistency check"));
872 pop_all_targets (void)
874 pop_all_targets_above (dummy_stratum
);
877 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
880 target_is_pushed (struct target_ops
*t
)
882 struct target_ops
**cur
;
884 /* Check magic number. If wrong, it probably means someone changed
885 the struct definition, but not all the places that initialize one. */
886 if (t
->to_magic
!= OPS_MAGIC
)
888 fprintf_unfiltered (gdb_stderr
,
889 "Magic number of %s target struct wrong\n",
891 internal_error (__FILE__
, __LINE__
,
892 _("failed internal consistency check"));
895 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
902 /* Using the objfile specified in OBJFILE, find the address for the
903 current thread's thread-local storage with offset OFFSET. */
905 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
907 volatile CORE_ADDR addr
= 0;
908 struct target_ops
*target
;
910 for (target
= current_target
.beneath
;
912 target
= target
->beneath
)
914 if (target
->to_get_thread_local_address
!= NULL
)
919 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
921 ptid_t ptid
= inferior_ptid
;
922 volatile struct gdb_exception ex
;
924 TRY_CATCH (ex
, RETURN_MASK_ALL
)
928 /* Fetch the load module address for this objfile. */
929 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
931 /* If it's 0, throw the appropriate exception. */
933 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
934 _("TLS load module not found"));
936 addr
= target
->to_get_thread_local_address (target
, ptid
,
939 /* If an error occurred, print TLS related messages here. Otherwise,
940 throw the error to some higher catcher. */
943 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
947 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
948 error (_("Cannot find thread-local variables "
949 "in this thread library."));
951 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
952 if (objfile_is_library
)
953 error (_("Cannot find shared library `%s' in dynamic"
954 " linker's load module list"), objfile_name (objfile
));
956 error (_("Cannot find executable file `%s' in dynamic"
957 " linker's load module list"), objfile_name (objfile
));
959 case TLS_NOT_ALLOCATED_YET_ERROR
:
960 if (objfile_is_library
)
961 error (_("The inferior has not yet allocated storage for"
962 " thread-local variables in\n"
963 "the shared library `%s'\n"
965 objfile_name (objfile
), target_pid_to_str (ptid
));
967 error (_("The inferior has not yet allocated storage for"
968 " thread-local variables in\n"
969 "the executable `%s'\n"
971 objfile_name (objfile
), target_pid_to_str (ptid
));
973 case TLS_GENERIC_ERROR
:
974 if (objfile_is_library
)
975 error (_("Cannot find thread-local storage for %s, "
976 "shared library %s:\n%s"),
977 target_pid_to_str (ptid
),
978 objfile_name (objfile
), ex
.message
);
980 error (_("Cannot find thread-local storage for %s, "
981 "executable file %s:\n%s"),
982 target_pid_to_str (ptid
),
983 objfile_name (objfile
), ex
.message
);
986 throw_exception (ex
);
991 /* It wouldn't be wrong here to try a gdbarch method, too; finding
992 TLS is an ABI-specific thing. But we don't do that yet. */
994 error (_("Cannot find thread-local variables on this target"));
1000 target_xfer_status_to_string (enum target_xfer_status err
)
1002 #define CASE(X) case X: return #X
1005 CASE(TARGET_XFER_E_IO
);
1006 CASE(TARGET_XFER_E_UNAVAILABLE
);
1015 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1017 /* target_read_string -- read a null terminated string, up to LEN bytes,
1018 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1019 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1020 is responsible for freeing it. Return the number of bytes successfully
1024 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1026 int tlen
, offset
, i
;
1030 int buffer_allocated
;
1032 unsigned int nbytes_read
= 0;
1034 gdb_assert (string
);
1036 /* Small for testing. */
1037 buffer_allocated
= 4;
1038 buffer
= xmalloc (buffer_allocated
);
1043 tlen
= MIN (len
, 4 - (memaddr
& 3));
1044 offset
= memaddr
& 3;
1046 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1049 /* The transfer request might have crossed the boundary to an
1050 unallocated region of memory. Retry the transfer, requesting
1054 errcode
= target_read_memory (memaddr
, buf
, 1);
1059 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1063 bytes
= bufptr
- buffer
;
1064 buffer_allocated
*= 2;
1065 buffer
= xrealloc (buffer
, buffer_allocated
);
1066 bufptr
= buffer
+ bytes
;
1069 for (i
= 0; i
< tlen
; i
++)
1071 *bufptr
++ = buf
[i
+ offset
];
1072 if (buf
[i
+ offset
] == '\000')
1074 nbytes_read
+= i
+ 1;
1081 nbytes_read
+= tlen
;
1090 struct target_section_table
*
1091 target_get_section_table (struct target_ops
*target
)
1093 struct target_ops
*t
;
1096 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1098 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1099 if (t
->to_get_section_table
!= NULL
)
1100 return (*t
->to_get_section_table
) (t
);
1105 /* Find a section containing ADDR. */
1107 struct target_section
*
1108 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1110 struct target_section_table
*table
= target_get_section_table (target
);
1111 struct target_section
*secp
;
1116 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1118 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1124 /* Read memory from the live target, even if currently inspecting a
1125 traceframe. The return is the same as that of target_read. */
1127 static enum target_xfer_status
1128 target_read_live_memory (enum target_object object
,
1129 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1130 ULONGEST
*xfered_len
)
1132 enum target_xfer_status ret
;
1133 struct cleanup
*cleanup
;
1135 /* Switch momentarily out of tfind mode so to access live memory.
1136 Note that this must not clear global state, such as the frame
1137 cache, which must still remain valid for the previous traceframe.
1138 We may be _building_ the frame cache at this point. */
1139 cleanup
= make_cleanup_restore_traceframe_number ();
1140 set_traceframe_number (-1);
1142 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1143 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1145 do_cleanups (cleanup
);
1149 /* Using the set of read-only target sections of OPS, read live
1150 read-only memory. Note that the actual reads start from the
1151 top-most target again.
1153 For interface/parameters/return description see target.h,
1156 static enum target_xfer_status
1157 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1158 enum target_object object
,
1159 gdb_byte
*readbuf
, ULONGEST memaddr
,
1160 ULONGEST len
, ULONGEST
*xfered_len
)
1162 struct target_section
*secp
;
1163 struct target_section_table
*table
;
1165 secp
= target_section_by_addr (ops
, memaddr
);
1167 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1168 secp
->the_bfd_section
)
1171 struct target_section
*p
;
1172 ULONGEST memend
= memaddr
+ len
;
1174 table
= target_get_section_table (ops
);
1176 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1178 if (memaddr
>= p
->addr
)
1180 if (memend
<= p
->endaddr
)
1182 /* Entire transfer is within this section. */
1183 return target_read_live_memory (object
, memaddr
,
1184 readbuf
, len
, xfered_len
);
1186 else if (memaddr
>= p
->endaddr
)
1188 /* This section ends before the transfer starts. */
1193 /* This section overlaps the transfer. Just do half. */
1194 len
= p
->endaddr
- memaddr
;
1195 return target_read_live_memory (object
, memaddr
,
1196 readbuf
, len
, xfered_len
);
1202 return TARGET_XFER_EOF
;
1205 /* Read memory from more than one valid target. A core file, for
1206 instance, could have some of memory but delegate other bits to
1207 the target below it. So, we must manually try all targets. */
1209 static enum target_xfer_status
1210 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1211 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1212 ULONGEST
*xfered_len
)
1214 enum target_xfer_status res
;
1218 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1219 readbuf
, writebuf
, memaddr
, len
,
1221 if (res
== TARGET_XFER_OK
)
1224 /* Stop if the target reports that the memory is not available. */
1225 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1228 /* We want to continue past core files to executables, but not
1229 past a running target's memory. */
1230 if (ops
->to_has_all_memory (ops
))
1235 while (ops
!= NULL
);
1240 /* Perform a partial memory transfer.
1241 For docs see target.h, to_xfer_partial. */
1243 static enum target_xfer_status
1244 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1245 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1246 ULONGEST len
, ULONGEST
*xfered_len
)
1248 enum target_xfer_status res
;
1250 struct mem_region
*region
;
1251 struct inferior
*inf
;
1253 /* For accesses to unmapped overlay sections, read directly from
1254 files. Must do this first, as MEMADDR may need adjustment. */
1255 if (readbuf
!= NULL
&& overlay_debugging
)
1257 struct obj_section
*section
= find_pc_overlay (memaddr
);
1259 if (pc_in_unmapped_range (memaddr
, section
))
1261 struct target_section_table
*table
1262 = target_get_section_table (ops
);
1263 const char *section_name
= section
->the_bfd_section
->name
;
1265 memaddr
= overlay_mapped_address (memaddr
, section
);
1266 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1267 memaddr
, len
, xfered_len
,
1269 table
->sections_end
,
1274 /* Try the executable files, if "trust-readonly-sections" is set. */
1275 if (readbuf
!= NULL
&& trust_readonly
)
1277 struct target_section
*secp
;
1278 struct target_section_table
*table
;
1280 secp
= target_section_by_addr (ops
, memaddr
);
1282 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1283 secp
->the_bfd_section
)
1286 table
= target_get_section_table (ops
);
1287 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1288 memaddr
, len
, xfered_len
,
1290 table
->sections_end
,
1295 /* If reading unavailable memory in the context of traceframes, and
1296 this address falls within a read-only section, fallback to
1297 reading from live memory. */
1298 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1300 VEC(mem_range_s
) *available
;
1302 /* If we fail to get the set of available memory, then the
1303 target does not support querying traceframe info, and so we
1304 attempt reading from the traceframe anyway (assuming the
1305 target implements the old QTro packet then). */
1306 if (traceframe_available_memory (&available
, memaddr
, len
))
1308 struct cleanup
*old_chain
;
1310 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1312 if (VEC_empty (mem_range_s
, available
)
1313 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1315 /* Don't read into the traceframe's available
1317 if (!VEC_empty (mem_range_s
, available
))
1319 LONGEST oldlen
= len
;
1321 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1322 gdb_assert (len
<= oldlen
);
1325 do_cleanups (old_chain
);
1327 /* This goes through the topmost target again. */
1328 res
= memory_xfer_live_readonly_partial (ops
, object
,
1331 if (res
== TARGET_XFER_OK
)
1332 return TARGET_XFER_OK
;
1335 /* No use trying further, we know some memory starting
1336 at MEMADDR isn't available. */
1338 return TARGET_XFER_E_UNAVAILABLE
;
1342 /* Don't try to read more than how much is available, in
1343 case the target implements the deprecated QTro packet to
1344 cater for older GDBs (the target's knowledge of read-only
1345 sections may be outdated by now). */
1346 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1348 do_cleanups (old_chain
);
1352 /* Try GDB's internal data cache. */
1353 region
= lookup_mem_region (memaddr
);
1354 /* region->hi == 0 means there's no upper bound. */
1355 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1358 reg_len
= region
->hi
- memaddr
;
1360 switch (region
->attrib
.mode
)
1363 if (writebuf
!= NULL
)
1364 return TARGET_XFER_E_IO
;
1368 if (readbuf
!= NULL
)
1369 return TARGET_XFER_E_IO
;
1373 /* We only support writing to flash during "load" for now. */
1374 if (writebuf
!= NULL
)
1375 error (_("Writing to flash memory forbidden in this context"));
1379 return TARGET_XFER_E_IO
;
1382 if (!ptid_equal (inferior_ptid
, null_ptid
))
1383 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1388 /* The dcache reads whole cache lines; that doesn't play well
1389 with reading from a trace buffer, because reading outside of
1390 the collected memory range fails. */
1391 && get_traceframe_number () == -1
1392 && (region
->attrib
.cache
1393 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1394 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1396 DCACHE
*dcache
= target_dcache_get_or_init ();
1399 if (readbuf
!= NULL
)
1400 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1402 /* FIXME drow/2006-08-09: If we're going to preserve const
1403 correctness dcache_xfer_memory should take readbuf and
1405 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1408 return TARGET_XFER_E_IO
;
1411 *xfered_len
= (ULONGEST
) l
;
1412 return TARGET_XFER_OK
;
1416 /* If none of those methods found the memory we wanted, fall back
1417 to a target partial transfer. Normally a single call to
1418 to_xfer_partial is enough; if it doesn't recognize an object
1419 it will call the to_xfer_partial of the next target down.
1420 But for memory this won't do. Memory is the only target
1421 object which can be read from more than one valid target.
1422 A core file, for instance, could have some of memory but
1423 delegate other bits to the target below it. So, we must
1424 manually try all targets. */
1426 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1429 /* Make sure the cache gets updated no matter what - if we are writing
1430 to the stack. Even if this write is not tagged as such, we still need
1431 to update the cache. */
1433 if (res
== TARGET_XFER_OK
1436 && target_dcache_init_p ()
1437 && !region
->attrib
.cache
1438 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1439 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1441 DCACHE
*dcache
= target_dcache_get ();
1443 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1446 /* If we still haven't got anything, return the last error. We
1451 /* Perform a partial memory transfer. For docs see target.h,
1454 static enum target_xfer_status
1455 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1456 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1457 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1459 enum target_xfer_status res
;
1461 /* Zero length requests are ok and require no work. */
1463 return TARGET_XFER_EOF
;
1465 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1466 breakpoint insns, thus hiding out from higher layers whether
1467 there are software breakpoints inserted in the code stream. */
1468 if (readbuf
!= NULL
)
1470 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1473 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1474 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1479 struct cleanup
*old_chain
;
1481 /* A large write request is likely to be partially satisfied
1482 by memory_xfer_partial_1. We will continually malloc
1483 and free a copy of the entire write request for breakpoint
1484 shadow handling even though we only end up writing a small
1485 subset of it. Cap writes to 4KB to mitigate this. */
1486 len
= min (4096, len
);
1488 buf
= xmalloc (len
);
1489 old_chain
= make_cleanup (xfree
, buf
);
1490 memcpy (buf
, writebuf
, len
);
1492 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1493 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1496 do_cleanups (old_chain
);
1503 restore_show_memory_breakpoints (void *arg
)
1505 show_memory_breakpoints
= (uintptr_t) arg
;
1509 make_show_memory_breakpoints_cleanup (int show
)
1511 int current
= show_memory_breakpoints
;
1513 show_memory_breakpoints
= show
;
1514 return make_cleanup (restore_show_memory_breakpoints
,
1515 (void *) (uintptr_t) current
);
1518 /* For docs see target.h, to_xfer_partial. */
1520 enum target_xfer_status
1521 target_xfer_partial (struct target_ops
*ops
,
1522 enum target_object object
, const char *annex
,
1523 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1524 ULONGEST offset
, ULONGEST len
,
1525 ULONGEST
*xfered_len
)
1527 enum target_xfer_status retval
;
1529 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1531 /* Transfer is done when LEN is zero. */
1533 return TARGET_XFER_EOF
;
1535 if (writebuf
&& !may_write_memory
)
1536 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1537 core_addr_to_string_nz (offset
), plongest (len
));
1541 /* If this is a memory transfer, let the memory-specific code
1542 have a look at it instead. Memory transfers are more
1544 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1545 || object
== TARGET_OBJECT_CODE_MEMORY
)
1546 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1547 writebuf
, offset
, len
, xfered_len
);
1548 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1550 /* Request the normal memory object from other layers. */
1551 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1555 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1556 writebuf
, offset
, len
, xfered_len
);
1560 const unsigned char *myaddr
= NULL
;
1562 fprintf_unfiltered (gdb_stdlog
,
1563 "%s:target_xfer_partial "
1564 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1567 (annex
? annex
: "(null)"),
1568 host_address_to_string (readbuf
),
1569 host_address_to_string (writebuf
),
1570 core_addr_to_string_nz (offset
),
1571 pulongest (len
), retval
,
1572 pulongest (*xfered_len
));
1578 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1582 fputs_unfiltered (", bytes =", gdb_stdlog
);
1583 for (i
= 0; i
< *xfered_len
; i
++)
1585 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1587 if (targetdebug
< 2 && i
> 0)
1589 fprintf_unfiltered (gdb_stdlog
, " ...");
1592 fprintf_unfiltered (gdb_stdlog
, "\n");
1595 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1599 fputc_unfiltered ('\n', gdb_stdlog
);
1602 /* Check implementations of to_xfer_partial update *XFERED_LEN
1603 properly. Do assertion after printing debug messages, so that we
1604 can find more clues on assertion failure from debugging messages. */
1605 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1606 gdb_assert (*xfered_len
> 0);
1611 /* Read LEN bytes of target memory at address MEMADDR, placing the
1612 results in GDB's memory at MYADDR. Returns either 0 for success or
1613 TARGET_XFER_E_IO if any error occurs.
1615 If an error occurs, no guarantee is made about the contents of the data at
1616 MYADDR. In particular, the caller should not depend upon partial reads
1617 filling the buffer with good data. There is no way for the caller to know
1618 how much good data might have been transfered anyway. Callers that can
1619 deal with partial reads should call target_read (which will retry until
1620 it makes no progress, and then return how much was transferred). */
1623 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1625 /* Dispatch to the topmost target, not the flattened current_target.
1626 Memory accesses check target->to_has_(all_)memory, and the
1627 flattened target doesn't inherit those. */
1628 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1629 myaddr
, memaddr
, len
) == len
)
1632 return TARGET_XFER_E_IO
;
1635 /* Like target_read_memory, but specify explicitly that this is a read
1636 from the target's raw memory. That is, this read bypasses the
1637 dcache, breakpoint shadowing, etc. */
1640 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1642 /* See comment in target_read_memory about why the request starts at
1643 current_target.beneath. */
1644 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1645 myaddr
, memaddr
, len
) == len
)
1648 return TARGET_XFER_E_IO
;
1651 /* Like target_read_memory, but specify explicitly that this is a read from
1652 the target's stack. This may trigger different cache behavior. */
1655 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1657 /* See comment in target_read_memory about why the request starts at
1658 current_target.beneath. */
1659 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1660 myaddr
, memaddr
, len
) == len
)
1663 return TARGET_XFER_E_IO
;
1666 /* Like target_read_memory, but specify explicitly that this is a read from
1667 the target's code. This may trigger different cache behavior. */
1670 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1672 /* See comment in target_read_memory about why the request starts at
1673 current_target.beneath. */
1674 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1675 myaddr
, memaddr
, len
) == len
)
1678 return TARGET_XFER_E_IO
;
1681 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1682 Returns either 0 for success or TARGET_XFER_E_IO if any
1683 error occurs. If an error occurs, no guarantee is made about how
1684 much data got written. Callers that can deal with partial writes
1685 should call target_write. */
1688 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1690 /* See comment in target_read_memory about why the request starts at
1691 current_target.beneath. */
1692 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1693 myaddr
, memaddr
, len
) == len
)
1696 return TARGET_XFER_E_IO
;
1699 /* Write LEN bytes from MYADDR to target raw memory at address
1700 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1701 if any error occurs. If an error occurs, no guarantee is made
1702 about how much data got written. Callers that can deal with
1703 partial writes should call target_write. */
1706 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1708 /* See comment in target_read_memory about why the request starts at
1709 current_target.beneath. */
1710 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1711 myaddr
, memaddr
, len
) == len
)
1714 return TARGET_XFER_E_IO
;
1717 /* Fetch the target's memory map. */
1720 target_memory_map (void)
1722 VEC(mem_region_s
) *result
;
1723 struct mem_region
*last_one
, *this_one
;
1725 struct target_ops
*t
;
1728 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1730 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1731 if (t
->to_memory_map
!= NULL
)
1737 result
= t
->to_memory_map (t
);
1741 qsort (VEC_address (mem_region_s
, result
),
1742 VEC_length (mem_region_s
, result
),
1743 sizeof (struct mem_region
), mem_region_cmp
);
1745 /* Check that regions do not overlap. Simultaneously assign
1746 a numbering for the "mem" commands to use to refer to
1749 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1751 this_one
->number
= ix
;
1753 if (last_one
&& last_one
->hi
> this_one
->lo
)
1755 warning (_("Overlapping regions in memory map: ignoring"));
1756 VEC_free (mem_region_s
, result
);
1759 last_one
= this_one
;
1766 target_flash_erase (ULONGEST address
, LONGEST length
)
1768 struct target_ops
*t
;
1770 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1771 if (t
->to_flash_erase
!= NULL
)
1774 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1775 hex_string (address
), phex (length
, 0));
1776 t
->to_flash_erase (t
, address
, length
);
1784 target_flash_done (void)
1786 struct target_ops
*t
;
1788 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1789 if (t
->to_flash_done
!= NULL
)
1792 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1793 t
->to_flash_done (t
);
1801 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1802 struct cmd_list_element
*c
, const char *value
)
1804 fprintf_filtered (file
,
1805 _("Mode for reading from readonly sections is %s.\n"),
1809 /* More generic transfers. */
1811 static enum target_xfer_status
1812 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1813 const char *annex
, gdb_byte
*readbuf
,
1814 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1815 ULONGEST
*xfered_len
)
1817 if (object
== TARGET_OBJECT_MEMORY
1818 && ops
->deprecated_xfer_memory
!= NULL
)
1819 /* If available, fall back to the target's
1820 "deprecated_xfer_memory" method. */
1825 if (writebuf
!= NULL
)
1827 void *buffer
= xmalloc (len
);
1828 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1830 memcpy (buffer
, writebuf
, len
);
1831 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1832 1/*write*/, NULL
, ops
);
1833 do_cleanups (cleanup
);
1835 if (readbuf
!= NULL
)
1836 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1837 0/*read*/, NULL
, ops
);
1840 *xfered_len
= (ULONGEST
) xfered
;
1841 return TARGET_XFER_E_IO
;
1843 else if (xfered
== 0 && errno
== 0)
1844 /* "deprecated_xfer_memory" uses 0, cross checked against
1845 ERRNO as one indication of an error. */
1846 return TARGET_XFER_EOF
;
1848 return TARGET_XFER_E_IO
;
1852 gdb_assert (ops
->beneath
!= NULL
);
1853 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1854 readbuf
, writebuf
, offset
, len
,
1859 /* Target vector read/write partial wrapper functions. */
1861 static enum target_xfer_status
1862 target_read_partial (struct target_ops
*ops
,
1863 enum target_object object
,
1864 const char *annex
, gdb_byte
*buf
,
1865 ULONGEST offset
, ULONGEST len
,
1866 ULONGEST
*xfered_len
)
1868 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
1872 static enum target_xfer_status
1873 target_write_partial (struct target_ops
*ops
,
1874 enum target_object object
,
1875 const char *annex
, const gdb_byte
*buf
,
1876 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
1878 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
1882 /* Wrappers to perform the full transfer. */
1884 /* For docs on target_read see target.h. */
1887 target_read (struct target_ops
*ops
,
1888 enum target_object object
,
1889 const char *annex
, gdb_byte
*buf
,
1890 ULONGEST offset
, LONGEST len
)
1894 while (xfered
< len
)
1896 ULONGEST xfered_len
;
1897 enum target_xfer_status status
;
1899 status
= target_read_partial (ops
, object
, annex
,
1900 (gdb_byte
*) buf
+ xfered
,
1901 offset
+ xfered
, len
- xfered
,
1904 /* Call an observer, notifying them of the xfer progress? */
1905 if (status
== TARGET_XFER_EOF
)
1907 else if (status
== TARGET_XFER_OK
)
1909 xfered
+= xfered_len
;
1919 /* Assuming that the entire [begin, end) range of memory cannot be
1920 read, try to read whatever subrange is possible to read.
1922 The function returns, in RESULT, either zero or one memory block.
1923 If there's a readable subrange at the beginning, it is completely
1924 read and returned. Any further readable subrange will not be read.
1925 Otherwise, if there's a readable subrange at the end, it will be
1926 completely read and returned. Any readable subranges before it
1927 (obviously, not starting at the beginning), will be ignored. In
1928 other cases -- either no readable subrange, or readable subrange(s)
1929 that is neither at the beginning, or end, nothing is returned.
1931 The purpose of this function is to handle a read across a boundary
1932 of accessible memory in a case when memory map is not available.
1933 The above restrictions are fine for this case, but will give
1934 incorrect results if the memory is 'patchy'. However, supporting
1935 'patchy' memory would require trying to read every single byte,
1936 and it seems unacceptable solution. Explicit memory map is
1937 recommended for this case -- and target_read_memory_robust will
1938 take care of reading multiple ranges then. */
1941 read_whatever_is_readable (struct target_ops
*ops
,
1942 ULONGEST begin
, ULONGEST end
,
1943 VEC(memory_read_result_s
) **result
)
1945 gdb_byte
*buf
= xmalloc (end
- begin
);
1946 ULONGEST current_begin
= begin
;
1947 ULONGEST current_end
= end
;
1949 memory_read_result_s r
;
1950 ULONGEST xfered_len
;
1952 /* If we previously failed to read 1 byte, nothing can be done here. */
1953 if (end
- begin
<= 1)
1959 /* Check that either first or the last byte is readable, and give up
1960 if not. This heuristic is meant to permit reading accessible memory
1961 at the boundary of accessible region. */
1962 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1963 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
1968 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1969 buf
+ (end
-begin
) - 1, end
- 1, 1,
1970 &xfered_len
) == TARGET_XFER_OK
)
1981 /* Loop invariant is that the [current_begin, current_end) was previously
1982 found to be not readable as a whole.
1984 Note loop condition -- if the range has 1 byte, we can't divide the range
1985 so there's no point trying further. */
1986 while (current_end
- current_begin
> 1)
1988 ULONGEST first_half_begin
, first_half_end
;
1989 ULONGEST second_half_begin
, second_half_end
;
1991 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
1995 first_half_begin
= current_begin
;
1996 first_half_end
= middle
;
1997 second_half_begin
= middle
;
1998 second_half_end
= current_end
;
2002 first_half_begin
= middle
;
2003 first_half_end
= current_end
;
2004 second_half_begin
= current_begin
;
2005 second_half_end
= middle
;
2008 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2009 buf
+ (first_half_begin
- begin
),
2011 first_half_end
- first_half_begin
);
2013 if (xfer
== first_half_end
- first_half_begin
)
2015 /* This half reads up fine. So, the error must be in the
2017 current_begin
= second_half_begin
;
2018 current_end
= second_half_end
;
2022 /* This half is not readable. Because we've tried one byte, we
2023 know some part of this half if actually redable. Go to the next
2024 iteration to divide again and try to read.
2026 We don't handle the other half, because this function only tries
2027 to read a single readable subrange. */
2028 current_begin
= first_half_begin
;
2029 current_end
= first_half_end
;
2035 /* The [begin, current_begin) range has been read. */
2037 r
.end
= current_begin
;
2042 /* The [current_end, end) range has been read. */
2043 LONGEST rlen
= end
- current_end
;
2045 r
.data
= xmalloc (rlen
);
2046 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2047 r
.begin
= current_end
;
2051 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2055 free_memory_read_result_vector (void *x
)
2057 VEC(memory_read_result_s
) *v
= x
;
2058 memory_read_result_s
*current
;
2061 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2063 xfree (current
->data
);
2065 VEC_free (memory_read_result_s
, v
);
2068 VEC(memory_read_result_s
) *
2069 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2071 VEC(memory_read_result_s
) *result
= 0;
2074 while (xfered
< len
)
2076 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2079 /* If there is no explicit region, a fake one should be created. */
2080 gdb_assert (region
);
2082 if (region
->hi
== 0)
2083 rlen
= len
- xfered
;
2085 rlen
= region
->hi
- offset
;
2087 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2089 /* Cannot read this region. Note that we can end up here only
2090 if the region is explicitly marked inaccessible, or
2091 'inaccessible-by-default' is in effect. */
2096 LONGEST to_read
= min (len
- xfered
, rlen
);
2097 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2099 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2100 (gdb_byte
*) buffer
,
2101 offset
+ xfered
, to_read
);
2102 /* Call an observer, notifying them of the xfer progress? */
2105 /* Got an error reading full chunk. See if maybe we can read
2108 read_whatever_is_readable (ops
, offset
+ xfered
,
2109 offset
+ xfered
+ to_read
, &result
);
2114 struct memory_read_result r
;
2116 r
.begin
= offset
+ xfered
;
2117 r
.end
= r
.begin
+ xfer
;
2118 VEC_safe_push (memory_read_result_s
, result
, &r
);
2128 /* An alternative to target_write with progress callbacks. */
2131 target_write_with_progress (struct target_ops
*ops
,
2132 enum target_object object
,
2133 const char *annex
, const gdb_byte
*buf
,
2134 ULONGEST offset
, LONGEST len
,
2135 void (*progress
) (ULONGEST
, void *), void *baton
)
2139 /* Give the progress callback a chance to set up. */
2141 (*progress
) (0, baton
);
2143 while (xfered
< len
)
2145 ULONGEST xfered_len
;
2146 enum target_xfer_status status
;
2148 status
= target_write_partial (ops
, object
, annex
,
2149 (gdb_byte
*) buf
+ xfered
,
2150 offset
+ xfered
, len
- xfered
,
2153 if (status
== TARGET_XFER_EOF
)
2155 if (TARGET_XFER_STATUS_ERROR_P (status
))
2158 gdb_assert (status
== TARGET_XFER_OK
);
2160 (*progress
) (xfered_len
, baton
);
2162 xfered
+= xfered_len
;
2168 /* For docs on target_write see target.h. */
2171 target_write (struct target_ops
*ops
,
2172 enum target_object object
,
2173 const char *annex
, const gdb_byte
*buf
,
2174 ULONGEST offset
, LONGEST len
)
2176 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2180 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2181 the size of the transferred data. PADDING additional bytes are
2182 available in *BUF_P. This is a helper function for
2183 target_read_alloc; see the declaration of that function for more
2187 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2188 const char *annex
, gdb_byte
**buf_p
, int padding
)
2190 size_t buf_alloc
, buf_pos
;
2193 /* This function does not have a length parameter; it reads the
2194 entire OBJECT). Also, it doesn't support objects fetched partly
2195 from one target and partly from another (in a different stratum,
2196 e.g. a core file and an executable). Both reasons make it
2197 unsuitable for reading memory. */
2198 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2200 /* Start by reading up to 4K at a time. The target will throttle
2201 this number down if necessary. */
2203 buf
= xmalloc (buf_alloc
);
2207 ULONGEST xfered_len
;
2208 enum target_xfer_status status
;
2210 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2211 buf_pos
, buf_alloc
- buf_pos
- padding
,
2214 if (status
== TARGET_XFER_EOF
)
2216 /* Read all there was. */
2223 else if (status
!= TARGET_XFER_OK
)
2225 /* An error occurred. */
2227 return TARGET_XFER_E_IO
;
2230 buf_pos
+= xfered_len
;
2232 /* If the buffer is filling up, expand it. */
2233 if (buf_alloc
< buf_pos
* 2)
2236 buf
= xrealloc (buf
, buf_alloc
);
2243 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2244 the size of the transferred data. See the declaration in "target.h"
2245 function for more information about the return value. */
2248 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2249 const char *annex
, gdb_byte
**buf_p
)
2251 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2254 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2255 returned as a string, allocated using xmalloc. If an error occurs
2256 or the transfer is unsupported, NULL is returned. Empty objects
2257 are returned as allocated but empty strings. A warning is issued
2258 if the result contains any embedded NUL bytes. */
2261 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2266 LONGEST i
, transferred
;
2268 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2269 bufstr
= (char *) buffer
;
2271 if (transferred
< 0)
2274 if (transferred
== 0)
2275 return xstrdup ("");
2277 bufstr
[transferred
] = 0;
2279 /* Check for embedded NUL bytes; but allow trailing NULs. */
2280 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2283 warning (_("target object %d, annex %s, "
2284 "contained unexpected null characters"),
2285 (int) object
, annex
? annex
: "(none)");
2292 /* Memory transfer methods. */
2295 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2298 /* This method is used to read from an alternate, non-current
2299 target. This read must bypass the overlay support (as symbols
2300 don't match this target), and GDB's internal cache (wrong cache
2301 for this target). */
2302 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2304 memory_error (TARGET_XFER_E_IO
, addr
);
2308 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2309 int len
, enum bfd_endian byte_order
)
2311 gdb_byte buf
[sizeof (ULONGEST
)];
2313 gdb_assert (len
<= sizeof (buf
));
2314 get_target_memory (ops
, addr
, buf
, len
);
2315 return extract_unsigned_integer (buf
, len
, byte_order
);
2321 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2322 struct bp_target_info
*bp_tgt
)
2324 if (!may_insert_breakpoints
)
2326 warning (_("May not insert breakpoints"));
2330 return current_target
.to_insert_breakpoint (¤t_target
,
2337 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2338 struct bp_target_info
*bp_tgt
)
2340 /* This is kind of a weird case to handle, but the permission might
2341 have been changed after breakpoints were inserted - in which case
2342 we should just take the user literally and assume that any
2343 breakpoints should be left in place. */
2344 if (!may_insert_breakpoints
)
2346 warning (_("May not remove breakpoints"));
2350 return current_target
.to_remove_breakpoint (¤t_target
,
2355 target_info (char *args
, int from_tty
)
2357 struct target_ops
*t
;
2358 int has_all_mem
= 0;
2360 if (symfile_objfile
!= NULL
)
2361 printf_unfiltered (_("Symbols from \"%s\".\n"),
2362 objfile_name (symfile_objfile
));
2364 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2366 if (!(*t
->to_has_memory
) (t
))
2369 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2372 printf_unfiltered (_("\tWhile running this, "
2373 "GDB does not access memory from...\n"));
2374 printf_unfiltered ("%s:\n", t
->to_longname
);
2375 (t
->to_files_info
) (t
);
2376 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2380 /* This function is called before any new inferior is created, e.g.
2381 by running a program, attaching, or connecting to a target.
2382 It cleans up any state from previous invocations which might
2383 change between runs. This is a subset of what target_preopen
2384 resets (things which might change between targets). */
2387 target_pre_inferior (int from_tty
)
2389 /* Clear out solib state. Otherwise the solib state of the previous
2390 inferior might have survived and is entirely wrong for the new
2391 target. This has been observed on GNU/Linux using glibc 2.3. How
2403 Cannot access memory at address 0xdeadbeef
2406 /* In some OSs, the shared library list is the same/global/shared
2407 across inferiors. If code is shared between processes, so are
2408 memory regions and features. */
2409 if (!gdbarch_has_global_solist (target_gdbarch ()))
2411 no_shared_libraries (NULL
, from_tty
);
2413 invalidate_target_mem_regions ();
2415 target_clear_description ();
2418 agent_capability_invalidate ();
2421 /* Callback for iterate_over_inferiors. Gets rid of the given
2425 dispose_inferior (struct inferior
*inf
, void *args
)
2427 struct thread_info
*thread
;
2429 thread
= any_thread_of_process (inf
->pid
);
2432 switch_to_thread (thread
->ptid
);
2434 /* Core inferiors actually should be detached, not killed. */
2435 if (target_has_execution
)
2438 target_detach (NULL
, 0);
2444 /* This is to be called by the open routine before it does
2448 target_preopen (int from_tty
)
2452 if (have_inferiors ())
2455 || !have_live_inferiors ()
2456 || query (_("A program is being debugged already. Kill it? ")))
2457 iterate_over_inferiors (dispose_inferior
, NULL
);
2459 error (_("Program not killed."));
2462 /* Calling target_kill may remove the target from the stack. But if
2463 it doesn't (which seems like a win for UDI), remove it now. */
2464 /* Leave the exec target, though. The user may be switching from a
2465 live process to a core of the same program. */
2466 pop_all_targets_above (file_stratum
);
2468 target_pre_inferior (from_tty
);
2471 /* Detach a target after doing deferred register stores. */
2474 target_detach (const char *args
, int from_tty
)
2476 struct target_ops
* t
;
2478 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2479 /* Don't remove global breakpoints here. They're removed on
2480 disconnection from the target. */
2483 /* If we're in breakpoints-always-inserted mode, have to remove
2484 them before detaching. */
2485 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2487 prepare_for_detach ();
2489 current_target
.to_detach (¤t_target
, args
, from_tty
);
2491 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2496 target_disconnect (char *args
, int from_tty
)
2498 struct target_ops
*t
;
2500 /* If we're in breakpoints-always-inserted mode or if breakpoints
2501 are global across processes, we have to remove them before
2503 remove_breakpoints ();
2505 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2506 if (t
->to_disconnect
!= NULL
)
2509 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2511 t
->to_disconnect (t
, args
, from_tty
);
2519 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2521 struct target_ops
*t
;
2522 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2527 char *status_string
;
2528 char *options_string
;
2530 status_string
= target_waitstatus_to_string (status
);
2531 options_string
= target_options_to_string (options
);
2532 fprintf_unfiltered (gdb_stdlog
,
2533 "target_wait (%d, status, options={%s})"
2535 ptid_get_pid (ptid
), options_string
,
2536 ptid_get_pid (retval
), status_string
);
2537 xfree (status_string
);
2538 xfree (options_string
);
2545 target_pid_to_str (ptid_t ptid
)
2547 struct target_ops
*t
;
2549 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2551 if (t
->to_pid_to_str
!= NULL
)
2552 return (*t
->to_pid_to_str
) (t
, ptid
);
2555 return normal_pid_to_str (ptid
);
2559 target_thread_name (struct thread_info
*info
)
2561 return current_target
.to_thread_name (¤t_target
, info
);
2565 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2567 struct target_ops
*t
;
2569 target_dcache_invalidate ();
2571 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2573 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2574 ptid_get_pid (ptid
),
2575 step
? "step" : "continue",
2576 gdb_signal_to_name (signal
));
2578 registers_changed_ptid (ptid
);
2579 set_executing (ptid
, 1);
2580 set_running (ptid
, 1);
2581 clear_inline_frame_state (ptid
);
2585 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2587 struct target_ops
*t
;
2589 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2591 if (t
->to_pass_signals
!= NULL
)
2597 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2600 for (i
= 0; i
< numsigs
; i
++)
2601 if (pass_signals
[i
])
2602 fprintf_unfiltered (gdb_stdlog
, " %s",
2603 gdb_signal_to_name (i
));
2605 fprintf_unfiltered (gdb_stdlog
, " })\n");
2608 (*t
->to_pass_signals
) (t
, numsigs
, pass_signals
);
2615 target_program_signals (int numsigs
, unsigned char *program_signals
)
2617 struct target_ops
*t
;
2619 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2621 if (t
->to_program_signals
!= NULL
)
2627 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2630 for (i
= 0; i
< numsigs
; i
++)
2631 if (program_signals
[i
])
2632 fprintf_unfiltered (gdb_stdlog
, " %s",
2633 gdb_signal_to_name (i
));
2635 fprintf_unfiltered (gdb_stdlog
, " })\n");
2638 (*t
->to_program_signals
) (t
, numsigs
, program_signals
);
2644 /* Look through the list of possible targets for a target that can
2648 target_follow_fork (int follow_child
, int detach_fork
)
2650 struct target_ops
*t
;
2652 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2654 if (t
->to_follow_fork
!= NULL
)
2656 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2659 fprintf_unfiltered (gdb_stdlog
,
2660 "target_follow_fork (%d, %d) = %d\n",
2661 follow_child
, detach_fork
, retval
);
2666 /* Some target returned a fork event, but did not know how to follow it. */
2667 internal_error (__FILE__
, __LINE__
,
2668 _("could not find a target to follow fork"));
2672 target_mourn_inferior (void)
2674 struct target_ops
*t
;
2676 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2678 if (t
->to_mourn_inferior
!= NULL
)
2680 t
->to_mourn_inferior (t
);
2682 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2684 /* We no longer need to keep handles on any of the object files.
2685 Make sure to release them to avoid unnecessarily locking any
2686 of them while we're not actually debugging. */
2687 bfd_cache_close_all ();
2693 internal_error (__FILE__
, __LINE__
,
2694 _("could not find a target to follow mourn inferior"));
2697 /* Look for a target which can describe architectural features, starting
2698 from TARGET. If we find one, return its description. */
2700 const struct target_desc
*
2701 target_read_description (struct target_ops
*target
)
2703 struct target_ops
*t
;
2705 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2706 if (t
->to_read_description
!= NULL
)
2708 const struct target_desc
*tdesc
;
2710 tdesc
= t
->to_read_description (t
);
2718 /* The default implementation of to_search_memory.
2719 This implements a basic search of memory, reading target memory and
2720 performing the search here (as opposed to performing the search in on the
2721 target side with, for example, gdbserver). */
2724 simple_search_memory (struct target_ops
*ops
,
2725 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2726 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2727 CORE_ADDR
*found_addrp
)
2729 /* NOTE: also defined in find.c testcase. */
2730 #define SEARCH_CHUNK_SIZE 16000
2731 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2732 /* Buffer to hold memory contents for searching. */
2733 gdb_byte
*search_buf
;
2734 unsigned search_buf_size
;
2735 struct cleanup
*old_cleanups
;
2737 search_buf_size
= chunk_size
+ pattern_len
- 1;
2739 /* No point in trying to allocate a buffer larger than the search space. */
2740 if (search_space_len
< search_buf_size
)
2741 search_buf_size
= search_space_len
;
2743 search_buf
= malloc (search_buf_size
);
2744 if (search_buf
== NULL
)
2745 error (_("Unable to allocate memory to perform the search."));
2746 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2748 /* Prime the search buffer. */
2750 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2751 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2753 warning (_("Unable to access %s bytes of target "
2754 "memory at %s, halting search."),
2755 pulongest (search_buf_size
), hex_string (start_addr
));
2756 do_cleanups (old_cleanups
);
2760 /* Perform the search.
2762 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2763 When we've scanned N bytes we copy the trailing bytes to the start and
2764 read in another N bytes. */
2766 while (search_space_len
>= pattern_len
)
2768 gdb_byte
*found_ptr
;
2769 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2771 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2772 pattern
, pattern_len
);
2774 if (found_ptr
!= NULL
)
2776 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2778 *found_addrp
= found_addr
;
2779 do_cleanups (old_cleanups
);
2783 /* Not found in this chunk, skip to next chunk. */
2785 /* Don't let search_space_len wrap here, it's unsigned. */
2786 if (search_space_len
>= chunk_size
)
2787 search_space_len
-= chunk_size
;
2789 search_space_len
= 0;
2791 if (search_space_len
>= pattern_len
)
2793 unsigned keep_len
= search_buf_size
- chunk_size
;
2794 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2797 /* Copy the trailing part of the previous iteration to the front
2798 of the buffer for the next iteration. */
2799 gdb_assert (keep_len
== pattern_len
- 1);
2800 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2802 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2804 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2805 search_buf
+ keep_len
, read_addr
,
2806 nr_to_read
) != nr_to_read
)
2808 warning (_("Unable to access %s bytes of target "
2809 "memory at %s, halting search."),
2810 plongest (nr_to_read
),
2811 hex_string (read_addr
));
2812 do_cleanups (old_cleanups
);
2816 start_addr
+= chunk_size
;
2822 do_cleanups (old_cleanups
);
2826 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2827 sequence of bytes in PATTERN with length PATTERN_LEN.
2829 The result is 1 if found, 0 if not found, and -1 if there was an error
2830 requiring halting of the search (e.g. memory read error).
2831 If the pattern is found the address is recorded in FOUND_ADDRP. */
2834 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2835 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2836 CORE_ADDR
*found_addrp
)
2838 struct target_ops
*t
;
2841 /* We don't use INHERIT to set current_target.to_search_memory,
2842 so we have to scan the target stack and handle targetdebug
2846 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2847 hex_string (start_addr
));
2849 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2850 if (t
->to_search_memory
!= NULL
)
2855 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2856 pattern
, pattern_len
, found_addrp
);
2860 /* If a special version of to_search_memory isn't available, use the
2862 found
= simple_search_memory (current_target
.beneath
,
2863 start_addr
, search_space_len
,
2864 pattern
, pattern_len
, found_addrp
);
2868 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2873 /* Look through the currently pushed targets. If none of them will
2874 be able to restart the currently running process, issue an error
2878 target_require_runnable (void)
2880 struct target_ops
*t
;
2882 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2884 /* If this target knows how to create a new program, then
2885 assume we will still be able to after killing the current
2886 one. Either killing and mourning will not pop T, or else
2887 find_default_run_target will find it again. */
2888 if (t
->to_create_inferior
!= NULL
)
2891 /* Do not worry about thread_stratum targets that can not
2892 create inferiors. Assume they will be pushed again if
2893 necessary, and continue to the process_stratum. */
2894 if (t
->to_stratum
== thread_stratum
2895 || t
->to_stratum
== arch_stratum
)
2898 error (_("The \"%s\" target does not support \"run\". "
2899 "Try \"help target\" or \"continue\"."),
2903 /* This function is only called if the target is running. In that
2904 case there should have been a process_stratum target and it
2905 should either know how to create inferiors, or not... */
2906 internal_error (__FILE__
, __LINE__
, _("No targets found"));
2909 /* Look through the list of possible targets for a target that can
2910 execute a run or attach command without any other data. This is
2911 used to locate the default process stratum.
2913 If DO_MESG is not NULL, the result is always valid (error() is
2914 called for errors); else, return NULL on error. */
2916 static struct target_ops
*
2917 find_default_run_target (char *do_mesg
)
2919 struct target_ops
**t
;
2920 struct target_ops
*runable
= NULL
;
2925 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2928 if ((*t
)->to_can_run
&& target_can_run (*t
))
2938 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
2947 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
2949 struct target_ops
*t
;
2951 t
= find_default_run_target ("attach");
2952 (t
->to_attach
) (t
, args
, from_tty
);
2957 find_default_create_inferior (struct target_ops
*ops
,
2958 char *exec_file
, char *allargs
, char **env
,
2961 struct target_ops
*t
;
2963 t
= find_default_run_target ("run");
2964 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
2969 find_default_can_async_p (struct target_ops
*ignore
)
2971 struct target_ops
*t
;
2973 /* This may be called before the target is pushed on the stack;
2974 look for the default process stratum. If there's none, gdb isn't
2975 configured with a native debugger, and target remote isn't
2977 t
= find_default_run_target (NULL
);
2978 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
2979 return (t
->to_can_async_p
) (t
);
2984 find_default_is_async_p (struct target_ops
*ignore
)
2986 struct target_ops
*t
;
2988 /* This may be called before the target is pushed on the stack;
2989 look for the default process stratum. If there's none, gdb isn't
2990 configured with a native debugger, and target remote isn't
2992 t
= find_default_run_target (NULL
);
2993 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
2994 return (t
->to_is_async_p
) (t
);
2999 find_default_supports_non_stop (struct target_ops
*self
)
3001 struct target_ops
*t
;
3003 t
= find_default_run_target (NULL
);
3004 if (t
&& t
->to_supports_non_stop
)
3005 return (t
->to_supports_non_stop
) (t
);
3010 target_supports_non_stop (void)
3012 struct target_ops
*t
;
3014 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3015 if (t
->to_supports_non_stop
)
3016 return t
->to_supports_non_stop (t
);
3021 /* Implement the "info proc" command. */
3024 target_info_proc (char *args
, enum info_proc_what what
)
3026 struct target_ops
*t
;
3028 /* If we're already connected to something that can get us OS
3029 related data, use it. Otherwise, try using the native
3031 if (current_target
.to_stratum
>= process_stratum
)
3032 t
= current_target
.beneath
;
3034 t
= find_default_run_target (NULL
);
3036 for (; t
!= NULL
; t
= t
->beneath
)
3038 if (t
->to_info_proc
!= NULL
)
3040 t
->to_info_proc (t
, args
, what
);
3043 fprintf_unfiltered (gdb_stdlog
,
3044 "target_info_proc (\"%s\", %d)\n", args
, what
);
3054 find_default_supports_disable_randomization (struct target_ops
*self
)
3056 struct target_ops
*t
;
3058 t
= find_default_run_target (NULL
);
3059 if (t
&& t
->to_supports_disable_randomization
)
3060 return (t
->to_supports_disable_randomization
) (t
);
3065 target_supports_disable_randomization (void)
3067 struct target_ops
*t
;
3069 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3070 if (t
->to_supports_disable_randomization
)
3071 return t
->to_supports_disable_randomization (t
);
3077 target_get_osdata (const char *type
)
3079 struct target_ops
*t
;
3081 /* If we're already connected to something that can get us OS
3082 related data, use it. Otherwise, try using the native
3084 if (current_target
.to_stratum
>= process_stratum
)
3085 t
= current_target
.beneath
;
3087 t
= find_default_run_target ("get OS data");
3092 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3095 /* Determine the current address space of thread PTID. */
3097 struct address_space
*
3098 target_thread_address_space (ptid_t ptid
)
3100 struct address_space
*aspace
;
3101 struct inferior
*inf
;
3102 struct target_ops
*t
;
3104 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3106 if (t
->to_thread_address_space
!= NULL
)
3108 aspace
= t
->to_thread_address_space (t
, ptid
);
3109 gdb_assert (aspace
);
3112 fprintf_unfiltered (gdb_stdlog
,
3113 "target_thread_address_space (%s) = %d\n",
3114 target_pid_to_str (ptid
),
3115 address_space_num (aspace
));
3120 /* Fall-back to the "main" address space of the inferior. */
3121 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3123 if (inf
== NULL
|| inf
->aspace
== NULL
)
3124 internal_error (__FILE__
, __LINE__
,
3125 _("Can't determine the current "
3126 "address space of thread %s\n"),
3127 target_pid_to_str (ptid
));
3133 /* Target file operations. */
3135 static struct target_ops
*
3136 default_fileio_target (void)
3138 /* If we're already connected to something that can perform
3139 file I/O, use it. Otherwise, try using the native target. */
3140 if (current_target
.to_stratum
>= process_stratum
)
3141 return current_target
.beneath
;
3143 return find_default_run_target ("file I/O");
3146 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3147 target file descriptor, or -1 if an error occurs (and set
3150 target_fileio_open (const char *filename
, int flags
, int mode
,
3153 struct target_ops
*t
;
3155 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3157 if (t
->to_fileio_open
!= NULL
)
3159 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3162 fprintf_unfiltered (gdb_stdlog
,
3163 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3164 filename
, flags
, mode
,
3165 fd
, fd
!= -1 ? 0 : *target_errno
);
3170 *target_errno
= FILEIO_ENOSYS
;
3174 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3175 Return the number of bytes written, or -1 if an error occurs
3176 (and set *TARGET_ERRNO). */
3178 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3179 ULONGEST offset
, int *target_errno
)
3181 struct target_ops
*t
;
3183 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3185 if (t
->to_fileio_pwrite
!= NULL
)
3187 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3191 fprintf_unfiltered (gdb_stdlog
,
3192 "target_fileio_pwrite (%d,...,%d,%s) "
3194 fd
, len
, pulongest (offset
),
3195 ret
, ret
!= -1 ? 0 : *target_errno
);
3200 *target_errno
= FILEIO_ENOSYS
;
3204 /* Read up to LEN bytes FD on the target into READ_BUF.
3205 Return the number of bytes read, or -1 if an error occurs
3206 (and set *TARGET_ERRNO). */
3208 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3209 ULONGEST offset
, int *target_errno
)
3211 struct target_ops
*t
;
3213 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3215 if (t
->to_fileio_pread
!= NULL
)
3217 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3221 fprintf_unfiltered (gdb_stdlog
,
3222 "target_fileio_pread (%d,...,%d,%s) "
3224 fd
, len
, pulongest (offset
),
3225 ret
, ret
!= -1 ? 0 : *target_errno
);
3230 *target_errno
= FILEIO_ENOSYS
;
3234 /* Close FD on the target. Return 0, or -1 if an error occurs
3235 (and set *TARGET_ERRNO). */
3237 target_fileio_close (int fd
, int *target_errno
)
3239 struct target_ops
*t
;
3241 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3243 if (t
->to_fileio_close
!= NULL
)
3245 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3248 fprintf_unfiltered (gdb_stdlog
,
3249 "target_fileio_close (%d) = %d (%d)\n",
3250 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3255 *target_errno
= FILEIO_ENOSYS
;
3259 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3260 occurs (and set *TARGET_ERRNO). */
3262 target_fileio_unlink (const char *filename
, int *target_errno
)
3264 struct target_ops
*t
;
3266 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3268 if (t
->to_fileio_unlink
!= NULL
)
3270 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3273 fprintf_unfiltered (gdb_stdlog
,
3274 "target_fileio_unlink (%s) = %d (%d)\n",
3275 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3280 *target_errno
= FILEIO_ENOSYS
;
3284 /* Read value of symbolic link FILENAME on the target. Return a
3285 null-terminated string allocated via xmalloc, or NULL if an error
3286 occurs (and set *TARGET_ERRNO). */
3288 target_fileio_readlink (const char *filename
, int *target_errno
)
3290 struct target_ops
*t
;
3292 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3294 if (t
->to_fileio_readlink
!= NULL
)
3296 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3299 fprintf_unfiltered (gdb_stdlog
,
3300 "target_fileio_readlink (%s) = %s (%d)\n",
3301 filename
, ret
? ret
: "(nil)",
3302 ret
? 0 : *target_errno
);
3307 *target_errno
= FILEIO_ENOSYS
;
3312 target_fileio_close_cleanup (void *opaque
)
3314 int fd
= *(int *) opaque
;
3317 target_fileio_close (fd
, &target_errno
);
3320 /* Read target file FILENAME. Store the result in *BUF_P and
3321 return the size of the transferred data. PADDING additional bytes are
3322 available in *BUF_P. This is a helper function for
3323 target_fileio_read_alloc; see the declaration of that function for more
3327 target_fileio_read_alloc_1 (const char *filename
,
3328 gdb_byte
**buf_p
, int padding
)
3330 struct cleanup
*close_cleanup
;
3331 size_t buf_alloc
, buf_pos
;
3337 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3341 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3343 /* Start by reading up to 4K at a time. The target will throttle
3344 this number down if necessary. */
3346 buf
= xmalloc (buf_alloc
);
3350 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3351 buf_alloc
- buf_pos
- padding
, buf_pos
,
3355 /* An error occurred. */
3356 do_cleanups (close_cleanup
);
3362 /* Read all there was. */
3363 do_cleanups (close_cleanup
);
3373 /* If the buffer is filling up, expand it. */
3374 if (buf_alloc
< buf_pos
* 2)
3377 buf
= xrealloc (buf
, buf_alloc
);
3384 /* Read target file FILENAME. Store the result in *BUF_P and return
3385 the size of the transferred data. See the declaration in "target.h"
3386 function for more information about the return value. */
3389 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3391 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3394 /* Read target file FILENAME. The result is NUL-terminated and
3395 returned as a string, allocated using xmalloc. If an error occurs
3396 or the transfer is unsupported, NULL is returned. Empty objects
3397 are returned as allocated but empty strings. A warning is issued
3398 if the result contains any embedded NUL bytes. */
3401 target_fileio_read_stralloc (const char *filename
)
3405 LONGEST i
, transferred
;
3407 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3408 bufstr
= (char *) buffer
;
3410 if (transferred
< 0)
3413 if (transferred
== 0)
3414 return xstrdup ("");
3416 bufstr
[transferred
] = 0;
3418 /* Check for embedded NUL bytes; but allow trailing NULs. */
3419 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3422 warning (_("target file %s "
3423 "contained unexpected null characters"),
3433 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3434 CORE_ADDR addr
, int len
)
3436 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3440 default_watchpoint_addr_within_range (struct target_ops
*target
,
3442 CORE_ADDR start
, int length
)
3444 return addr
>= start
&& addr
< start
+ length
;
3447 static struct gdbarch
*
3448 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3450 return target_gdbarch ();
3460 * Find the next target down the stack from the specified target.
3464 find_target_beneath (struct target_ops
*t
)
3472 find_target_at (enum strata stratum
)
3474 struct target_ops
*t
;
3476 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3477 if (t
->to_stratum
== stratum
)
3484 /* The inferior process has died. Long live the inferior! */
3487 generic_mourn_inferior (void)
3491 ptid
= inferior_ptid
;
3492 inferior_ptid
= null_ptid
;
3494 /* Mark breakpoints uninserted in case something tries to delete a
3495 breakpoint while we delete the inferior's threads (which would
3496 fail, since the inferior is long gone). */
3497 mark_breakpoints_out ();
3499 if (!ptid_equal (ptid
, null_ptid
))
3501 int pid
= ptid_get_pid (ptid
);
3502 exit_inferior (pid
);
3505 /* Note this wipes step-resume breakpoints, so needs to be done
3506 after exit_inferior, which ends up referencing the step-resume
3507 breakpoints through clear_thread_inferior_resources. */
3508 breakpoint_init_inferior (inf_exited
);
3510 registers_changed ();
3512 reopen_exec_file ();
3513 reinit_frame_cache ();
3515 if (deprecated_detach_hook
)
3516 deprecated_detach_hook ();
3519 /* Convert a normal process ID to a string. Returns the string in a
3523 normal_pid_to_str (ptid_t ptid
)
3525 static char buf
[32];
3527 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3532 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3534 return normal_pid_to_str (ptid
);
3537 /* Error-catcher for target_find_memory_regions. */
3539 dummy_find_memory_regions (struct target_ops
*self
,
3540 find_memory_region_ftype ignore1
, void *ignore2
)
3542 error (_("Command not implemented for this target."));
3546 /* Error-catcher for target_make_corefile_notes. */
3548 dummy_make_corefile_notes (struct target_ops
*self
,
3549 bfd
*ignore1
, int *ignore2
)
3551 error (_("Command not implemented for this target."));
3555 /* Set up the handful of non-empty slots needed by the dummy target
3559 init_dummy_target (void)
3561 dummy_target
.to_shortname
= "None";
3562 dummy_target
.to_longname
= "None";
3563 dummy_target
.to_doc
= "";
3564 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3565 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3566 dummy_target
.to_supports_disable_randomization
3567 = find_default_supports_disable_randomization
;
3568 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3569 dummy_target
.to_stratum
= dummy_stratum
;
3570 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3571 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3572 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3573 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3574 dummy_target
.to_has_execution
3575 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3576 dummy_target
.to_magic
= OPS_MAGIC
;
3578 install_dummy_methods (&dummy_target
);
3582 debug_to_open (char *args
, int from_tty
)
3584 debug_target
.to_open (args
, from_tty
);
3586 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3590 target_close (struct target_ops
*targ
)
3592 gdb_assert (!target_is_pushed (targ
));
3594 if (targ
->to_xclose
!= NULL
)
3595 targ
->to_xclose (targ
);
3596 else if (targ
->to_close
!= NULL
)
3597 targ
->to_close (targ
);
3600 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3604 target_attach (char *args
, int from_tty
)
3606 current_target
.to_attach (¤t_target
, args
, from_tty
);
3608 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3613 target_thread_alive (ptid_t ptid
)
3615 struct target_ops
*t
;
3617 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3619 if (t
->to_thread_alive
!= NULL
)
3623 retval
= t
->to_thread_alive (t
, ptid
);
3625 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3626 ptid_get_pid (ptid
), retval
);
3636 target_find_new_threads (void)
3638 struct target_ops
*t
;
3640 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3642 if (t
->to_find_new_threads
!= NULL
)
3644 t
->to_find_new_threads (t
);
3646 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3654 target_stop (ptid_t ptid
)
3658 warning (_("May not interrupt or stop the target, ignoring attempt"));
3662 (*current_target
.to_stop
) (¤t_target
, ptid
);
3666 debug_to_post_attach (struct target_ops
*self
, int pid
)
3668 debug_target
.to_post_attach (&debug_target
, pid
);
3670 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3673 /* Concatenate ELEM to LIST, a comma separate list, and return the
3674 result. The LIST incoming argument is released. */
3677 str_comma_list_concat_elem (char *list
, const char *elem
)
3680 return xstrdup (elem
);
3682 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3685 /* Helper for target_options_to_string. If OPT is present in
3686 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3687 Returns the new resulting string. OPT is removed from
3691 do_option (int *target_options
, char *ret
,
3692 int opt
, char *opt_str
)
3694 if ((*target_options
& opt
) != 0)
3696 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3697 *target_options
&= ~opt
;
3704 target_options_to_string (int target_options
)
3708 #define DO_TARG_OPTION(OPT) \
3709 ret = do_option (&target_options, ret, OPT, #OPT)
3711 DO_TARG_OPTION (TARGET_WNOHANG
);
3713 if (target_options
!= 0)
3714 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3722 debug_print_register (const char * func
,
3723 struct regcache
*regcache
, int regno
)
3725 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3727 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3728 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3729 && gdbarch_register_name (gdbarch
, regno
) != NULL
3730 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3731 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3732 gdbarch_register_name (gdbarch
, regno
));
3734 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3735 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3737 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3738 int i
, size
= register_size (gdbarch
, regno
);
3739 gdb_byte buf
[MAX_REGISTER_SIZE
];
3741 regcache_raw_collect (regcache
, regno
, buf
);
3742 fprintf_unfiltered (gdb_stdlog
, " = ");
3743 for (i
= 0; i
< size
; i
++)
3745 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3747 if (size
<= sizeof (LONGEST
))
3749 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3751 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3752 core_addr_to_string_nz (val
), plongest (val
));
3755 fprintf_unfiltered (gdb_stdlog
, "\n");
3759 target_fetch_registers (struct regcache
*regcache
, int regno
)
3761 current_target
.to_fetch_registers (¤t_target
, regcache
, regno
);
3763 debug_print_register ("target_fetch_registers", regcache
, regno
);
3767 target_store_registers (struct regcache
*regcache
, int regno
)
3769 struct target_ops
*t
;
3771 if (!may_write_registers
)
3772 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3774 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3777 debug_print_register ("target_store_registers", regcache
, regno
);
3782 target_core_of_thread (ptid_t ptid
)
3784 struct target_ops
*t
;
3786 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3788 if (t
->to_core_of_thread
!= NULL
)
3790 int retval
= t
->to_core_of_thread (t
, ptid
);
3793 fprintf_unfiltered (gdb_stdlog
,
3794 "target_core_of_thread (%d) = %d\n",
3795 ptid_get_pid (ptid
), retval
);
3804 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3806 struct target_ops
*t
;
3808 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3810 if (t
->to_verify_memory
!= NULL
)
3812 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3815 fprintf_unfiltered (gdb_stdlog
,
3816 "target_verify_memory (%s, %s) = %d\n",
3817 paddress (target_gdbarch (), memaddr
),
3827 /* The documentation for this function is in its prototype declaration in
3831 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3835 ret
= current_target
.to_insert_mask_watchpoint (¤t_target
,
3839 fprintf_unfiltered (gdb_stdlog
, "\
3840 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3841 core_addr_to_string (addr
),
3842 core_addr_to_string (mask
), rw
, ret
);
3847 /* The documentation for this function is in its prototype declaration in
3851 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3853 struct target_ops
*t
;
3855 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3856 if (t
->to_remove_mask_watchpoint
!= NULL
)
3860 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
3863 fprintf_unfiltered (gdb_stdlog
, "\
3864 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3865 core_addr_to_string (addr
),
3866 core_addr_to_string (mask
), rw
, ret
);
3874 /* The documentation for this function is in its prototype declaration
3878 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
3880 struct target_ops
*t
;
3882 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3883 if (t
->to_masked_watch_num_registers
!= NULL
)
3884 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
3889 /* The documentation for this function is in its prototype declaration
3893 target_ranged_break_num_registers (void)
3895 return current_target
.to_ranged_break_num_registers (¤t_target
);
3900 struct btrace_target_info
*
3901 target_enable_btrace (ptid_t ptid
)
3903 struct target_ops
*t
;
3905 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3906 if (t
->to_enable_btrace
!= NULL
)
3907 return t
->to_enable_btrace (t
, ptid
);
3916 target_disable_btrace (struct btrace_target_info
*btinfo
)
3918 struct target_ops
*t
;
3920 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3921 if (t
->to_disable_btrace
!= NULL
)
3923 t
->to_disable_btrace (t
, btinfo
);
3933 target_teardown_btrace (struct btrace_target_info
*btinfo
)
3935 struct target_ops
*t
;
3937 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3938 if (t
->to_teardown_btrace
!= NULL
)
3940 t
->to_teardown_btrace (t
, btinfo
);
3950 target_read_btrace (VEC (btrace_block_s
) **btrace
,
3951 struct btrace_target_info
*btinfo
,
3952 enum btrace_read_type type
)
3954 struct target_ops
*t
;
3956 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3957 if (t
->to_read_btrace
!= NULL
)
3958 return t
->to_read_btrace (t
, btrace
, btinfo
, type
);
3961 return BTRACE_ERR_NOT_SUPPORTED
;
3967 target_stop_recording (void)
3969 struct target_ops
*t
;
3971 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3972 if (t
->to_stop_recording
!= NULL
)
3974 t
->to_stop_recording (t
);
3978 /* This is optional. */
3984 target_info_record (void)
3986 struct target_ops
*t
;
3988 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3989 if (t
->to_info_record
!= NULL
)
3991 t
->to_info_record (t
);
4001 target_save_record (const char *filename
)
4003 struct target_ops
*t
;
4005 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4006 if (t
->to_save_record
!= NULL
)
4008 t
->to_save_record (t
, filename
);
4018 target_supports_delete_record (void)
4020 struct target_ops
*t
;
4022 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4023 if (t
->to_delete_record
!= NULL
)
4032 target_delete_record (void)
4034 struct target_ops
*t
;
4036 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4037 if (t
->to_delete_record
!= NULL
)
4039 t
->to_delete_record (t
);
4049 target_record_is_replaying (void)
4051 struct target_ops
*t
;
4053 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4054 if (t
->to_record_is_replaying
!= NULL
)
4055 return t
->to_record_is_replaying (t
);
4063 target_goto_record_begin (void)
4065 struct target_ops
*t
;
4067 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4068 if (t
->to_goto_record_begin
!= NULL
)
4070 t
->to_goto_record_begin (t
);
4080 target_goto_record_end (void)
4082 struct target_ops
*t
;
4084 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4085 if (t
->to_goto_record_end
!= NULL
)
4087 t
->to_goto_record_end (t
);
4097 target_goto_record (ULONGEST insn
)
4099 struct target_ops
*t
;
4101 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4102 if (t
->to_goto_record
!= NULL
)
4104 t
->to_goto_record (t
, insn
);
4114 target_insn_history (int size
, int flags
)
4116 struct target_ops
*t
;
4118 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4119 if (t
->to_insn_history
!= NULL
)
4121 t
->to_insn_history (t
, size
, flags
);
4131 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4133 struct target_ops
*t
;
4135 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4136 if (t
->to_insn_history_from
!= NULL
)
4138 t
->to_insn_history_from (t
, from
, size
, flags
);
4148 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4150 struct target_ops
*t
;
4152 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4153 if (t
->to_insn_history_range
!= NULL
)
4155 t
->to_insn_history_range (t
, begin
, end
, flags
);
4165 target_call_history (int size
, int flags
)
4167 struct target_ops
*t
;
4169 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4170 if (t
->to_call_history
!= NULL
)
4172 t
->to_call_history (t
, size
, flags
);
4182 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4184 struct target_ops
*t
;
4186 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4187 if (t
->to_call_history_from
!= NULL
)
4189 t
->to_call_history_from (t
, begin
, size
, flags
);
4199 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4201 struct target_ops
*t
;
4203 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4204 if (t
->to_call_history_range
!= NULL
)
4206 t
->to_call_history_range (t
, begin
, end
, flags
);
4214 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
4216 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
4218 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4223 const struct frame_unwind
*
4224 target_get_unwinder (void)
4226 struct target_ops
*t
;
4228 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4229 if (t
->to_get_unwinder
!= NULL
)
4230 return t
->to_get_unwinder
;
4237 const struct frame_unwind
*
4238 target_get_tailcall_unwinder (void)
4240 struct target_ops
*t
;
4242 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4243 if (t
->to_get_tailcall_unwinder
!= NULL
)
4244 return t
->to_get_tailcall_unwinder
;
4252 forward_target_decr_pc_after_break (struct target_ops
*ops
,
4253 struct gdbarch
*gdbarch
)
4255 for (; ops
!= NULL
; ops
= ops
->beneath
)
4256 if (ops
->to_decr_pc_after_break
!= NULL
)
4257 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
4259 return gdbarch_decr_pc_after_break (gdbarch
);
4265 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
4267 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
4271 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4272 int write
, struct mem_attrib
*attrib
,
4273 struct target_ops
*target
)
4277 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4280 fprintf_unfiltered (gdb_stdlog
,
4281 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4282 paddress (target_gdbarch (), memaddr
), len
,
4283 write
? "write" : "read", retval
);
4289 fputs_unfiltered (", bytes =", gdb_stdlog
);
4290 for (i
= 0; i
< retval
; i
++)
4292 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4294 if (targetdebug
< 2 && i
> 0)
4296 fprintf_unfiltered (gdb_stdlog
, " ...");
4299 fprintf_unfiltered (gdb_stdlog
, "\n");
4302 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4306 fputc_unfiltered ('\n', gdb_stdlog
);
4312 debug_to_files_info (struct target_ops
*target
)
4314 debug_target
.to_files_info (target
);
4316 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4320 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4321 struct bp_target_info
*bp_tgt
)
4325 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4327 fprintf_unfiltered (gdb_stdlog
,
4328 "target_insert_breakpoint (%s, xxx) = %ld\n",
4329 core_addr_to_string (bp_tgt
->placed_address
),
4330 (unsigned long) retval
);
4335 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4336 struct bp_target_info
*bp_tgt
)
4340 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4342 fprintf_unfiltered (gdb_stdlog
,
4343 "target_remove_breakpoint (%s, xxx) = %ld\n",
4344 core_addr_to_string (bp_tgt
->placed_address
),
4345 (unsigned long) retval
);
4350 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4351 int type
, int cnt
, int from_tty
)
4355 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4356 type
, cnt
, from_tty
);
4358 fprintf_unfiltered (gdb_stdlog
,
4359 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4360 (unsigned long) type
,
4361 (unsigned long) cnt
,
4362 (unsigned long) from_tty
,
4363 (unsigned long) retval
);
4368 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4369 CORE_ADDR addr
, int len
)
4373 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4376 fprintf_unfiltered (gdb_stdlog
,
4377 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4378 core_addr_to_string (addr
), (unsigned long) len
,
4379 core_addr_to_string (retval
));
4384 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4385 CORE_ADDR addr
, int len
, int rw
,
4386 struct expression
*cond
)
4390 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4394 fprintf_unfiltered (gdb_stdlog
,
4395 "target_can_accel_watchpoint_condition "
4396 "(%s, %d, %d, %s) = %ld\n",
4397 core_addr_to_string (addr
), len
, rw
,
4398 host_address_to_string (cond
), (unsigned long) retval
);
4403 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4407 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4409 fprintf_unfiltered (gdb_stdlog
,
4410 "target_stopped_by_watchpoint () = %ld\n",
4411 (unsigned long) retval
);
4416 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4420 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4422 fprintf_unfiltered (gdb_stdlog
,
4423 "target_stopped_data_address ([%s]) = %ld\n",
4424 core_addr_to_string (*addr
),
4425 (unsigned long)retval
);
4430 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4432 CORE_ADDR start
, int length
)
4436 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4439 fprintf_filtered (gdb_stdlog
,
4440 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4441 core_addr_to_string (addr
), core_addr_to_string (start
),
4447 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4448 struct gdbarch
*gdbarch
,
4449 struct bp_target_info
*bp_tgt
)
4453 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4456 fprintf_unfiltered (gdb_stdlog
,
4457 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4458 core_addr_to_string (bp_tgt
->placed_address
),
4459 (unsigned long) retval
);
4464 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4465 struct gdbarch
*gdbarch
,
4466 struct bp_target_info
*bp_tgt
)
4470 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4473 fprintf_unfiltered (gdb_stdlog
,
4474 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4475 core_addr_to_string (bp_tgt
->placed_address
),
4476 (unsigned long) retval
);
4481 debug_to_insert_watchpoint (struct target_ops
*self
,
4482 CORE_ADDR addr
, int len
, int type
,
4483 struct expression
*cond
)
4487 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4488 addr
, len
, type
, cond
);
4490 fprintf_unfiltered (gdb_stdlog
,
4491 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4492 core_addr_to_string (addr
), len
, type
,
4493 host_address_to_string (cond
), (unsigned long) retval
);
4498 debug_to_remove_watchpoint (struct target_ops
*self
,
4499 CORE_ADDR addr
, int len
, int type
,
4500 struct expression
*cond
)
4504 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4505 addr
, len
, type
, cond
);
4507 fprintf_unfiltered (gdb_stdlog
,
4508 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4509 core_addr_to_string (addr
), len
, type
,
4510 host_address_to_string (cond
), (unsigned long) retval
);
4515 debug_to_terminal_init (struct target_ops
*self
)
4517 debug_target
.to_terminal_init (&debug_target
);
4519 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4523 debug_to_terminal_inferior (struct target_ops
*self
)
4525 debug_target
.to_terminal_inferior (&debug_target
);
4527 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4531 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4533 debug_target
.to_terminal_ours_for_output (&debug_target
);
4535 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4539 debug_to_terminal_ours (struct target_ops
*self
)
4541 debug_target
.to_terminal_ours (&debug_target
);
4543 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4547 debug_to_terminal_save_ours (struct target_ops
*self
)
4549 debug_target
.to_terminal_save_ours (&debug_target
);
4551 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4555 debug_to_terminal_info (struct target_ops
*self
,
4556 const char *arg
, int from_tty
)
4558 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4560 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4565 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4567 debug_target
.to_load (&debug_target
, args
, from_tty
);
4569 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4573 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4575 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4577 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4578 ptid_get_pid (ptid
));
4582 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4586 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4588 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4595 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4599 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4601 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4608 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4612 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4614 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4621 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4625 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4627 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4634 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4638 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4640 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4647 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4651 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4653 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4660 debug_to_has_exited (struct target_ops
*self
,
4661 int pid
, int wait_status
, int *exit_status
)
4665 has_exited
= debug_target
.to_has_exited (&debug_target
,
4666 pid
, wait_status
, exit_status
);
4668 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4669 pid
, wait_status
, *exit_status
, has_exited
);
4675 debug_to_can_run (struct target_ops
*self
)
4679 retval
= debug_target
.to_can_run (&debug_target
);
4681 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4686 static struct gdbarch
*
4687 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4689 struct gdbarch
*retval
;
4691 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4693 fprintf_unfiltered (gdb_stdlog
,
4694 "target_thread_architecture (%s) = %s [%s]\n",
4695 target_pid_to_str (ptid
),
4696 host_address_to_string (retval
),
4697 gdbarch_bfd_arch_info (retval
)->printable_name
);
4702 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4704 debug_target
.to_stop (&debug_target
, ptid
);
4706 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4707 target_pid_to_str (ptid
));
4711 debug_to_rcmd (struct target_ops
*self
, char *command
,
4712 struct ui_file
*outbuf
)
4714 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4715 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4719 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4723 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4725 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4732 setup_target_debug (void)
4734 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4736 current_target
.to_open
= debug_to_open
;
4737 current_target
.to_post_attach
= debug_to_post_attach
;
4738 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4739 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4740 current_target
.to_files_info
= debug_to_files_info
;
4741 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4742 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4743 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4744 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4745 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4746 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4747 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4748 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4749 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4750 current_target
.to_watchpoint_addr_within_range
4751 = debug_to_watchpoint_addr_within_range
;
4752 current_target
.to_region_ok_for_hw_watchpoint
4753 = debug_to_region_ok_for_hw_watchpoint
;
4754 current_target
.to_can_accel_watchpoint_condition
4755 = debug_to_can_accel_watchpoint_condition
;
4756 current_target
.to_terminal_init
= debug_to_terminal_init
;
4757 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4758 current_target
.to_terminal_ours_for_output
4759 = debug_to_terminal_ours_for_output
;
4760 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4761 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4762 current_target
.to_terminal_info
= debug_to_terminal_info
;
4763 current_target
.to_load
= debug_to_load
;
4764 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4765 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4766 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4767 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4768 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4769 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4770 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4771 current_target
.to_has_exited
= debug_to_has_exited
;
4772 current_target
.to_can_run
= debug_to_can_run
;
4773 current_target
.to_stop
= debug_to_stop
;
4774 current_target
.to_rcmd
= debug_to_rcmd
;
4775 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4776 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4780 static char targ_desc
[] =
4781 "Names of targets and files being debugged.\nShows the entire \
4782 stack of targets currently in use (including the exec-file,\n\
4783 core-file, and process, if any), as well as the symbol file name.";
4786 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4788 error (_("\"monitor\" command not supported by this target."));
4792 do_monitor_command (char *cmd
,
4795 target_rcmd (cmd
, gdb_stdtarg
);
4798 /* Print the name of each layers of our target stack. */
4801 maintenance_print_target_stack (char *cmd
, int from_tty
)
4803 struct target_ops
*t
;
4805 printf_filtered (_("The current target stack is:\n"));
4807 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4809 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4813 /* Controls if async mode is permitted. */
4814 int target_async_permitted
= 0;
4816 /* The set command writes to this variable. If the inferior is
4817 executing, target_async_permitted is *not* updated. */
4818 static int target_async_permitted_1
= 0;
4821 set_target_async_command (char *args
, int from_tty
,
4822 struct cmd_list_element
*c
)
4824 if (have_live_inferiors ())
4826 target_async_permitted_1
= target_async_permitted
;
4827 error (_("Cannot change this setting while the inferior is running."));
4830 target_async_permitted
= target_async_permitted_1
;
4834 show_target_async_command (struct ui_file
*file
, int from_tty
,
4835 struct cmd_list_element
*c
,
4838 fprintf_filtered (file
,
4839 _("Controlling the inferior in "
4840 "asynchronous mode is %s.\n"), value
);
4843 /* Temporary copies of permission settings. */
4845 static int may_write_registers_1
= 1;
4846 static int may_write_memory_1
= 1;
4847 static int may_insert_breakpoints_1
= 1;
4848 static int may_insert_tracepoints_1
= 1;
4849 static int may_insert_fast_tracepoints_1
= 1;
4850 static int may_stop_1
= 1;
4852 /* Make the user-set values match the real values again. */
4855 update_target_permissions (void)
4857 may_write_registers_1
= may_write_registers
;
4858 may_write_memory_1
= may_write_memory
;
4859 may_insert_breakpoints_1
= may_insert_breakpoints
;
4860 may_insert_tracepoints_1
= may_insert_tracepoints
;
4861 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4862 may_stop_1
= may_stop
;
4865 /* The one function handles (most of) the permission flags in the same
4869 set_target_permissions (char *args
, int from_tty
,
4870 struct cmd_list_element
*c
)
4872 if (target_has_execution
)
4874 update_target_permissions ();
4875 error (_("Cannot change this setting while the inferior is running."));
4878 /* Make the real values match the user-changed values. */
4879 may_write_registers
= may_write_registers_1
;
4880 may_insert_breakpoints
= may_insert_breakpoints_1
;
4881 may_insert_tracepoints
= may_insert_tracepoints_1
;
4882 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4883 may_stop
= may_stop_1
;
4884 update_observer_mode ();
4887 /* Set memory write permission independently of observer mode. */
4890 set_write_memory_permission (char *args
, int from_tty
,
4891 struct cmd_list_element
*c
)
4893 /* Make the real values match the user-changed values. */
4894 may_write_memory
= may_write_memory_1
;
4895 update_observer_mode ();
4900 initialize_targets (void)
4902 init_dummy_target ();
4903 push_target (&dummy_target
);
4905 add_info ("target", target_info
, targ_desc
);
4906 add_info ("files", target_info
, targ_desc
);
4908 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
4909 Set target debugging."), _("\
4910 Show target debugging."), _("\
4911 When non-zero, target debugging is enabled. Higher numbers are more\n\
4912 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4916 &setdebuglist
, &showdebuglist
);
4918 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
4919 &trust_readonly
, _("\
4920 Set mode for reading from readonly sections."), _("\
4921 Show mode for reading from readonly sections."), _("\
4922 When this mode is on, memory reads from readonly sections (such as .text)\n\
4923 will be read from the object file instead of from the target. This will\n\
4924 result in significant performance improvement for remote targets."),
4926 show_trust_readonly
,
4927 &setlist
, &showlist
);
4929 add_com ("monitor", class_obscure
, do_monitor_command
,
4930 _("Send a command to the remote monitor (remote targets only)."));
4932 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
4933 _("Print the name of each layer of the internal target stack."),
4934 &maintenanceprintlist
);
4936 add_setshow_boolean_cmd ("target-async", no_class
,
4937 &target_async_permitted_1
, _("\
4938 Set whether gdb controls the inferior in asynchronous mode."), _("\
4939 Show whether gdb controls the inferior in asynchronous mode."), _("\
4940 Tells gdb whether to control the inferior in asynchronous mode."),
4941 set_target_async_command
,
4942 show_target_async_command
,
4946 add_setshow_boolean_cmd ("may-write-registers", class_support
,
4947 &may_write_registers_1
, _("\
4948 Set permission to write into registers."), _("\
4949 Show permission to write into registers."), _("\
4950 When this permission is on, GDB may write into the target's registers.\n\
4951 Otherwise, any sort of write attempt will result in an error."),
4952 set_target_permissions
, NULL
,
4953 &setlist
, &showlist
);
4955 add_setshow_boolean_cmd ("may-write-memory", class_support
,
4956 &may_write_memory_1
, _("\
4957 Set permission to write into target memory."), _("\
4958 Show permission to write into target memory."), _("\
4959 When this permission is on, GDB may write into the target's memory.\n\
4960 Otherwise, any sort of write attempt will result in an error."),
4961 set_write_memory_permission
, NULL
,
4962 &setlist
, &showlist
);
4964 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
4965 &may_insert_breakpoints_1
, _("\
4966 Set permission to insert breakpoints in the target."), _("\
4967 Show permission to insert breakpoints in the target."), _("\
4968 When this permission is on, GDB may insert breakpoints in the program.\n\
4969 Otherwise, any sort of insertion attempt will result in an error."),
4970 set_target_permissions
, NULL
,
4971 &setlist
, &showlist
);
4973 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
4974 &may_insert_tracepoints_1
, _("\
4975 Set permission to insert tracepoints in the target."), _("\
4976 Show permission to insert tracepoints in the target."), _("\
4977 When this permission is on, GDB may insert tracepoints in the program.\n\
4978 Otherwise, any sort of insertion attempt will result in an error."),
4979 set_target_permissions
, NULL
,
4980 &setlist
, &showlist
);
4982 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
4983 &may_insert_fast_tracepoints_1
, _("\
4984 Set permission to insert fast tracepoints in the target."), _("\
4985 Show permission to insert fast tracepoints in the target."), _("\
4986 When this permission is on, GDB may insert fast tracepoints.\n\
4987 Otherwise, any sort of insertion attempt will result in an error."),
4988 set_target_permissions
, NULL
,
4989 &setlist
, &showlist
);
4991 add_setshow_boolean_cmd ("may-interrupt", class_support
,
4993 Set permission to interrupt or signal the target."), _("\
4994 Show permission to interrupt or signal the target."), _("\
4995 When this permission is on, GDB may interrupt/stop the target's execution.\n\
4996 Otherwise, any attempt to interrupt or stop will be ignored."),
4997 set_target_permissions
, NULL
,
4998 &setlist
, &showlist
);