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 INHERIT (to_stop
, t
);
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
);
718 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
719 INHERIT (to_can_run_breakpoint_commands
, t
);
720 /* Do not inherit to_memory_map. */
721 /* Do not inherit to_flash_erase. */
722 /* Do not inherit to_flash_done. */
726 /* Clean up a target struct so it no longer has any zero pointers in
727 it. Some entries are defaulted to a method that print an error,
728 others are hard-wired to a standard recursive default. */
730 #define de_fault(field, value) \
731 if (!current_target.field) \
732 current_target.field = value
735 (void (*) (char *, int))
738 (void (*) (struct target_ops
*))
740 de_fault (deprecated_xfer_memory
,
741 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
742 struct mem_attrib
*, struct target_ops
*))
744 de_fault (to_can_run
,
745 (int (*) (struct target_ops
*))
748 (void (*) (struct target_ops
*, ptid_t
))
750 current_target
.to_read_description
= NULL
;
751 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
752 (int (*) (struct target_ops
*))
754 de_fault (to_can_run_breakpoint_commands
,
755 (int (*) (struct target_ops
*))
760 /* Finally, position the target-stack beneath the squashed
761 "current_target". That way code looking for a non-inherited
762 target method can quickly and simply find it. */
763 current_target
.beneath
= target_stack
;
766 setup_target_debug ();
769 /* Push a new target type into the stack of the existing target accessors,
770 possibly superseding some of the existing accessors.
772 Rather than allow an empty stack, we always have the dummy target at
773 the bottom stratum, so we can call the function vectors without
777 push_target (struct target_ops
*t
)
779 struct target_ops
**cur
;
781 /* Check magic number. If wrong, it probably means someone changed
782 the struct definition, but not all the places that initialize one. */
783 if (t
->to_magic
!= OPS_MAGIC
)
785 fprintf_unfiltered (gdb_stderr
,
786 "Magic number of %s target struct wrong\n",
788 internal_error (__FILE__
, __LINE__
,
789 _("failed internal consistency check"));
792 /* Find the proper stratum to install this target in. */
793 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
795 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
799 /* If there's already targets at this stratum, remove them. */
800 /* FIXME: cagney/2003-10-15: I think this should be popping all
801 targets to CUR, and not just those at this stratum level. */
802 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
804 /* There's already something at this stratum level. Close it,
805 and un-hook it from the stack. */
806 struct target_ops
*tmp
= (*cur
);
808 (*cur
) = (*cur
)->beneath
;
813 /* We have removed all targets in our stratum, now add the new one. */
817 update_current_target ();
820 /* Remove a target_ops vector from the stack, wherever it may be.
821 Return how many times it was removed (0 or 1). */
824 unpush_target (struct target_ops
*t
)
826 struct target_ops
**cur
;
827 struct target_ops
*tmp
;
829 if (t
->to_stratum
== dummy_stratum
)
830 internal_error (__FILE__
, __LINE__
,
831 _("Attempt to unpush the dummy target"));
833 /* Look for the specified target. Note that we assume that a target
834 can only occur once in the target stack. */
836 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
842 /* If we don't find target_ops, quit. Only open targets should be
847 /* Unchain the target. */
849 (*cur
) = (*cur
)->beneath
;
852 update_current_target ();
854 /* Finally close the target. Note we do this after unchaining, so
855 any target method calls from within the target_close
856 implementation don't end up in T anymore. */
863 pop_all_targets_above (enum strata above_stratum
)
865 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
867 if (!unpush_target (target_stack
))
869 fprintf_unfiltered (gdb_stderr
,
870 "pop_all_targets couldn't find target %s\n",
871 target_stack
->to_shortname
);
872 internal_error (__FILE__
, __LINE__
,
873 _("failed internal consistency check"));
880 pop_all_targets (void)
882 pop_all_targets_above (dummy_stratum
);
885 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
888 target_is_pushed (struct target_ops
*t
)
890 struct target_ops
**cur
;
892 /* Check magic number. If wrong, it probably means someone changed
893 the struct definition, but not all the places that initialize one. */
894 if (t
->to_magic
!= OPS_MAGIC
)
896 fprintf_unfiltered (gdb_stderr
,
897 "Magic number of %s target struct wrong\n",
899 internal_error (__FILE__
, __LINE__
,
900 _("failed internal consistency check"));
903 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
910 /* Using the objfile specified in OBJFILE, find the address for the
911 current thread's thread-local storage with offset OFFSET. */
913 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
915 volatile CORE_ADDR addr
= 0;
916 struct target_ops
*target
;
918 for (target
= current_target
.beneath
;
920 target
= target
->beneath
)
922 if (target
->to_get_thread_local_address
!= NULL
)
927 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
929 ptid_t ptid
= inferior_ptid
;
930 volatile struct gdb_exception ex
;
932 TRY_CATCH (ex
, RETURN_MASK_ALL
)
936 /* Fetch the load module address for this objfile. */
937 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
939 /* If it's 0, throw the appropriate exception. */
941 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
942 _("TLS load module not found"));
944 addr
= target
->to_get_thread_local_address (target
, ptid
,
947 /* If an error occurred, print TLS related messages here. Otherwise,
948 throw the error to some higher catcher. */
951 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
955 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
956 error (_("Cannot find thread-local variables "
957 "in this thread library."));
959 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
960 if (objfile_is_library
)
961 error (_("Cannot find shared library `%s' in dynamic"
962 " linker's load module list"), objfile_name (objfile
));
964 error (_("Cannot find executable file `%s' in dynamic"
965 " linker's load module list"), objfile_name (objfile
));
967 case TLS_NOT_ALLOCATED_YET_ERROR
:
968 if (objfile_is_library
)
969 error (_("The inferior has not yet allocated storage for"
970 " thread-local variables in\n"
971 "the shared library `%s'\n"
973 objfile_name (objfile
), target_pid_to_str (ptid
));
975 error (_("The inferior has not yet allocated storage for"
976 " thread-local variables in\n"
977 "the executable `%s'\n"
979 objfile_name (objfile
), target_pid_to_str (ptid
));
981 case TLS_GENERIC_ERROR
:
982 if (objfile_is_library
)
983 error (_("Cannot find thread-local storage for %s, "
984 "shared library %s:\n%s"),
985 target_pid_to_str (ptid
),
986 objfile_name (objfile
), ex
.message
);
988 error (_("Cannot find thread-local storage for %s, "
989 "executable file %s:\n%s"),
990 target_pid_to_str (ptid
),
991 objfile_name (objfile
), ex
.message
);
994 throw_exception (ex
);
999 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1000 TLS is an ABI-specific thing. But we don't do that yet. */
1002 error (_("Cannot find thread-local variables on this target"));
1008 target_xfer_status_to_string (enum target_xfer_status err
)
1010 #define CASE(X) case X: return #X
1013 CASE(TARGET_XFER_E_IO
);
1014 CASE(TARGET_XFER_E_UNAVAILABLE
);
1023 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1025 /* target_read_string -- read a null terminated string, up to LEN bytes,
1026 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1027 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1028 is responsible for freeing it. Return the number of bytes successfully
1032 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1034 int tlen
, offset
, i
;
1038 int buffer_allocated
;
1040 unsigned int nbytes_read
= 0;
1042 gdb_assert (string
);
1044 /* Small for testing. */
1045 buffer_allocated
= 4;
1046 buffer
= xmalloc (buffer_allocated
);
1051 tlen
= MIN (len
, 4 - (memaddr
& 3));
1052 offset
= memaddr
& 3;
1054 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1057 /* The transfer request might have crossed the boundary to an
1058 unallocated region of memory. Retry the transfer, requesting
1062 errcode
= target_read_memory (memaddr
, buf
, 1);
1067 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1071 bytes
= bufptr
- buffer
;
1072 buffer_allocated
*= 2;
1073 buffer
= xrealloc (buffer
, buffer_allocated
);
1074 bufptr
= buffer
+ bytes
;
1077 for (i
= 0; i
< tlen
; i
++)
1079 *bufptr
++ = buf
[i
+ offset
];
1080 if (buf
[i
+ offset
] == '\000')
1082 nbytes_read
+= i
+ 1;
1089 nbytes_read
+= tlen
;
1098 struct target_section_table
*
1099 target_get_section_table (struct target_ops
*target
)
1101 struct target_ops
*t
;
1104 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1106 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1107 if (t
->to_get_section_table
!= NULL
)
1108 return (*t
->to_get_section_table
) (t
);
1113 /* Find a section containing ADDR. */
1115 struct target_section
*
1116 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1118 struct target_section_table
*table
= target_get_section_table (target
);
1119 struct target_section
*secp
;
1124 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1126 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1132 /* Read memory from the live target, even if currently inspecting a
1133 traceframe. The return is the same as that of target_read. */
1135 static enum target_xfer_status
1136 target_read_live_memory (enum target_object object
,
1137 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1138 ULONGEST
*xfered_len
)
1140 enum target_xfer_status ret
;
1141 struct cleanup
*cleanup
;
1143 /* Switch momentarily out of tfind mode so to access live memory.
1144 Note that this must not clear global state, such as the frame
1145 cache, which must still remain valid for the previous traceframe.
1146 We may be _building_ the frame cache at this point. */
1147 cleanup
= make_cleanup_restore_traceframe_number ();
1148 set_traceframe_number (-1);
1150 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1151 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1153 do_cleanups (cleanup
);
1157 /* Using the set of read-only target sections of OPS, read live
1158 read-only memory. Note that the actual reads start from the
1159 top-most target again.
1161 For interface/parameters/return description see target.h,
1164 static enum target_xfer_status
1165 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1166 enum target_object object
,
1167 gdb_byte
*readbuf
, ULONGEST memaddr
,
1168 ULONGEST len
, ULONGEST
*xfered_len
)
1170 struct target_section
*secp
;
1171 struct target_section_table
*table
;
1173 secp
= target_section_by_addr (ops
, memaddr
);
1175 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1176 secp
->the_bfd_section
)
1179 struct target_section
*p
;
1180 ULONGEST memend
= memaddr
+ len
;
1182 table
= target_get_section_table (ops
);
1184 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1186 if (memaddr
>= p
->addr
)
1188 if (memend
<= p
->endaddr
)
1190 /* Entire transfer is within this section. */
1191 return target_read_live_memory (object
, memaddr
,
1192 readbuf
, len
, xfered_len
);
1194 else if (memaddr
>= p
->endaddr
)
1196 /* This section ends before the transfer starts. */
1201 /* This section overlaps the transfer. Just do half. */
1202 len
= p
->endaddr
- memaddr
;
1203 return target_read_live_memory (object
, memaddr
,
1204 readbuf
, len
, xfered_len
);
1210 return TARGET_XFER_EOF
;
1213 /* Read memory from more than one valid target. A core file, for
1214 instance, could have some of memory but delegate other bits to
1215 the target below it. So, we must manually try all targets. */
1217 static enum target_xfer_status
1218 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1219 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1220 ULONGEST
*xfered_len
)
1222 enum target_xfer_status res
;
1226 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1227 readbuf
, writebuf
, memaddr
, len
,
1229 if (res
== TARGET_XFER_OK
)
1232 /* Stop if the target reports that the memory is not available. */
1233 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1236 /* We want to continue past core files to executables, but not
1237 past a running target's memory. */
1238 if (ops
->to_has_all_memory (ops
))
1243 while (ops
!= NULL
);
1248 /* Perform a partial memory transfer.
1249 For docs see target.h, to_xfer_partial. */
1251 static enum target_xfer_status
1252 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1253 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1254 ULONGEST len
, ULONGEST
*xfered_len
)
1256 enum target_xfer_status res
;
1258 struct mem_region
*region
;
1259 struct inferior
*inf
;
1261 /* For accesses to unmapped overlay sections, read directly from
1262 files. Must do this first, as MEMADDR may need adjustment. */
1263 if (readbuf
!= NULL
&& overlay_debugging
)
1265 struct obj_section
*section
= find_pc_overlay (memaddr
);
1267 if (pc_in_unmapped_range (memaddr
, section
))
1269 struct target_section_table
*table
1270 = target_get_section_table (ops
);
1271 const char *section_name
= section
->the_bfd_section
->name
;
1273 memaddr
= overlay_mapped_address (memaddr
, section
);
1274 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1275 memaddr
, len
, xfered_len
,
1277 table
->sections_end
,
1282 /* Try the executable files, if "trust-readonly-sections" is set. */
1283 if (readbuf
!= NULL
&& trust_readonly
)
1285 struct target_section
*secp
;
1286 struct target_section_table
*table
;
1288 secp
= target_section_by_addr (ops
, memaddr
);
1290 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1291 secp
->the_bfd_section
)
1294 table
= target_get_section_table (ops
);
1295 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1296 memaddr
, len
, xfered_len
,
1298 table
->sections_end
,
1303 /* If reading unavailable memory in the context of traceframes, and
1304 this address falls within a read-only section, fallback to
1305 reading from live memory. */
1306 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1308 VEC(mem_range_s
) *available
;
1310 /* If we fail to get the set of available memory, then the
1311 target does not support querying traceframe info, and so we
1312 attempt reading from the traceframe anyway (assuming the
1313 target implements the old QTro packet then). */
1314 if (traceframe_available_memory (&available
, memaddr
, len
))
1316 struct cleanup
*old_chain
;
1318 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1320 if (VEC_empty (mem_range_s
, available
)
1321 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1323 /* Don't read into the traceframe's available
1325 if (!VEC_empty (mem_range_s
, available
))
1327 LONGEST oldlen
= len
;
1329 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1330 gdb_assert (len
<= oldlen
);
1333 do_cleanups (old_chain
);
1335 /* This goes through the topmost target again. */
1336 res
= memory_xfer_live_readonly_partial (ops
, object
,
1339 if (res
== TARGET_XFER_OK
)
1340 return TARGET_XFER_OK
;
1343 /* No use trying further, we know some memory starting
1344 at MEMADDR isn't available. */
1346 return TARGET_XFER_E_UNAVAILABLE
;
1350 /* Don't try to read more than how much is available, in
1351 case the target implements the deprecated QTro packet to
1352 cater for older GDBs (the target's knowledge of read-only
1353 sections may be outdated by now). */
1354 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1356 do_cleanups (old_chain
);
1360 /* Try GDB's internal data cache. */
1361 region
= lookup_mem_region (memaddr
);
1362 /* region->hi == 0 means there's no upper bound. */
1363 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1366 reg_len
= region
->hi
- memaddr
;
1368 switch (region
->attrib
.mode
)
1371 if (writebuf
!= NULL
)
1372 return TARGET_XFER_E_IO
;
1376 if (readbuf
!= NULL
)
1377 return TARGET_XFER_E_IO
;
1381 /* We only support writing to flash during "load" for now. */
1382 if (writebuf
!= NULL
)
1383 error (_("Writing to flash memory forbidden in this context"));
1387 return TARGET_XFER_E_IO
;
1390 if (!ptid_equal (inferior_ptid
, null_ptid
))
1391 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1396 /* The dcache reads whole cache lines; that doesn't play well
1397 with reading from a trace buffer, because reading outside of
1398 the collected memory range fails. */
1399 && get_traceframe_number () == -1
1400 && (region
->attrib
.cache
1401 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1402 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1404 DCACHE
*dcache
= target_dcache_get_or_init ();
1407 if (readbuf
!= NULL
)
1408 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1410 /* FIXME drow/2006-08-09: If we're going to preserve const
1411 correctness dcache_xfer_memory should take readbuf and
1413 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1416 return TARGET_XFER_E_IO
;
1419 *xfered_len
= (ULONGEST
) l
;
1420 return TARGET_XFER_OK
;
1424 /* If none of those methods found the memory we wanted, fall back
1425 to a target partial transfer. Normally a single call to
1426 to_xfer_partial is enough; if it doesn't recognize an object
1427 it will call the to_xfer_partial of the next target down.
1428 But for memory this won't do. Memory is the only target
1429 object which can be read from more than one valid target.
1430 A core file, for instance, could have some of memory but
1431 delegate other bits to the target below it. So, we must
1432 manually try all targets. */
1434 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1437 /* Make sure the cache gets updated no matter what - if we are writing
1438 to the stack. Even if this write is not tagged as such, we still need
1439 to update the cache. */
1441 if (res
== TARGET_XFER_OK
1444 && target_dcache_init_p ()
1445 && !region
->attrib
.cache
1446 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1447 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1449 DCACHE
*dcache
= target_dcache_get ();
1451 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1454 /* If we still haven't got anything, return the last error. We
1459 /* Perform a partial memory transfer. For docs see target.h,
1462 static enum target_xfer_status
1463 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1464 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1465 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1467 enum target_xfer_status res
;
1469 /* Zero length requests are ok and require no work. */
1471 return TARGET_XFER_EOF
;
1473 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1474 breakpoint insns, thus hiding out from higher layers whether
1475 there are software breakpoints inserted in the code stream. */
1476 if (readbuf
!= NULL
)
1478 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1481 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1482 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1487 struct cleanup
*old_chain
;
1489 /* A large write request is likely to be partially satisfied
1490 by memory_xfer_partial_1. We will continually malloc
1491 and free a copy of the entire write request for breakpoint
1492 shadow handling even though we only end up writing a small
1493 subset of it. Cap writes to 4KB to mitigate this. */
1494 len
= min (4096, len
);
1496 buf
= xmalloc (len
);
1497 old_chain
= make_cleanup (xfree
, buf
);
1498 memcpy (buf
, writebuf
, len
);
1500 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1501 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1504 do_cleanups (old_chain
);
1511 restore_show_memory_breakpoints (void *arg
)
1513 show_memory_breakpoints
= (uintptr_t) arg
;
1517 make_show_memory_breakpoints_cleanup (int show
)
1519 int current
= show_memory_breakpoints
;
1521 show_memory_breakpoints
= show
;
1522 return make_cleanup (restore_show_memory_breakpoints
,
1523 (void *) (uintptr_t) current
);
1526 /* For docs see target.h, to_xfer_partial. */
1528 enum target_xfer_status
1529 target_xfer_partial (struct target_ops
*ops
,
1530 enum target_object object
, const char *annex
,
1531 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1532 ULONGEST offset
, ULONGEST len
,
1533 ULONGEST
*xfered_len
)
1535 enum target_xfer_status retval
;
1537 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1539 /* Transfer is done when LEN is zero. */
1541 return TARGET_XFER_EOF
;
1543 if (writebuf
&& !may_write_memory
)
1544 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1545 core_addr_to_string_nz (offset
), plongest (len
));
1549 /* If this is a memory transfer, let the memory-specific code
1550 have a look at it instead. Memory transfers are more
1552 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1553 || object
== TARGET_OBJECT_CODE_MEMORY
)
1554 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1555 writebuf
, offset
, len
, xfered_len
);
1556 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1558 /* Request the normal memory object from other layers. */
1559 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1563 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1564 writebuf
, offset
, len
, xfered_len
);
1568 const unsigned char *myaddr
= NULL
;
1570 fprintf_unfiltered (gdb_stdlog
,
1571 "%s:target_xfer_partial "
1572 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1575 (annex
? annex
: "(null)"),
1576 host_address_to_string (readbuf
),
1577 host_address_to_string (writebuf
),
1578 core_addr_to_string_nz (offset
),
1579 pulongest (len
), retval
,
1580 pulongest (*xfered_len
));
1586 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1590 fputs_unfiltered (", bytes =", gdb_stdlog
);
1591 for (i
= 0; i
< *xfered_len
; i
++)
1593 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1595 if (targetdebug
< 2 && i
> 0)
1597 fprintf_unfiltered (gdb_stdlog
, " ...");
1600 fprintf_unfiltered (gdb_stdlog
, "\n");
1603 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1607 fputc_unfiltered ('\n', gdb_stdlog
);
1610 /* Check implementations of to_xfer_partial update *XFERED_LEN
1611 properly. Do assertion after printing debug messages, so that we
1612 can find more clues on assertion failure from debugging messages. */
1613 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1614 gdb_assert (*xfered_len
> 0);
1619 /* Read LEN bytes of target memory at address MEMADDR, placing the
1620 results in GDB's memory at MYADDR. Returns either 0 for success or
1621 TARGET_XFER_E_IO if any error occurs.
1623 If an error occurs, no guarantee is made about the contents of the data at
1624 MYADDR. In particular, the caller should not depend upon partial reads
1625 filling the buffer with good data. There is no way for the caller to know
1626 how much good data might have been transfered anyway. Callers that can
1627 deal with partial reads should call target_read (which will retry until
1628 it makes no progress, and then return how much was transferred). */
1631 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1633 /* Dispatch to the topmost target, not the flattened current_target.
1634 Memory accesses check target->to_has_(all_)memory, and the
1635 flattened target doesn't inherit those. */
1636 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1637 myaddr
, memaddr
, len
) == len
)
1640 return TARGET_XFER_E_IO
;
1643 /* Like target_read_memory, but specify explicitly that this is a read
1644 from the target's raw memory. That is, this read bypasses the
1645 dcache, breakpoint shadowing, etc. */
1648 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1650 /* See comment in target_read_memory about why the request starts at
1651 current_target.beneath. */
1652 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1653 myaddr
, memaddr
, len
) == len
)
1656 return TARGET_XFER_E_IO
;
1659 /* Like target_read_memory, but specify explicitly that this is a read from
1660 the target's stack. This may trigger different cache behavior. */
1663 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1665 /* See comment in target_read_memory about why the request starts at
1666 current_target.beneath. */
1667 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1668 myaddr
, memaddr
, len
) == len
)
1671 return TARGET_XFER_E_IO
;
1674 /* Like target_read_memory, but specify explicitly that this is a read from
1675 the target's code. This may trigger different cache behavior. */
1678 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1680 /* See comment in target_read_memory about why the request starts at
1681 current_target.beneath. */
1682 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1683 myaddr
, memaddr
, len
) == len
)
1686 return TARGET_XFER_E_IO
;
1689 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1690 Returns either 0 for success or TARGET_XFER_E_IO if any
1691 error occurs. If an error occurs, no guarantee is made about how
1692 much data got written. Callers that can deal with partial writes
1693 should call target_write. */
1696 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1698 /* See comment in target_read_memory about why the request starts at
1699 current_target.beneath. */
1700 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1701 myaddr
, memaddr
, len
) == len
)
1704 return TARGET_XFER_E_IO
;
1707 /* Write LEN bytes from MYADDR to target raw memory at address
1708 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1709 if any error occurs. If an error occurs, no guarantee is made
1710 about how much data got written. Callers that can deal with
1711 partial writes should call target_write. */
1714 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1716 /* See comment in target_read_memory about why the request starts at
1717 current_target.beneath. */
1718 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1719 myaddr
, memaddr
, len
) == len
)
1722 return TARGET_XFER_E_IO
;
1725 /* Fetch the target's memory map. */
1728 target_memory_map (void)
1730 VEC(mem_region_s
) *result
;
1731 struct mem_region
*last_one
, *this_one
;
1733 struct target_ops
*t
;
1736 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1738 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1739 if (t
->to_memory_map
!= NULL
)
1745 result
= t
->to_memory_map (t
);
1749 qsort (VEC_address (mem_region_s
, result
),
1750 VEC_length (mem_region_s
, result
),
1751 sizeof (struct mem_region
), mem_region_cmp
);
1753 /* Check that regions do not overlap. Simultaneously assign
1754 a numbering for the "mem" commands to use to refer to
1757 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1759 this_one
->number
= ix
;
1761 if (last_one
&& last_one
->hi
> this_one
->lo
)
1763 warning (_("Overlapping regions in memory map: ignoring"));
1764 VEC_free (mem_region_s
, result
);
1767 last_one
= this_one
;
1774 target_flash_erase (ULONGEST address
, LONGEST length
)
1776 struct target_ops
*t
;
1778 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1779 if (t
->to_flash_erase
!= NULL
)
1782 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1783 hex_string (address
), phex (length
, 0));
1784 t
->to_flash_erase (t
, address
, length
);
1792 target_flash_done (void)
1794 struct target_ops
*t
;
1796 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1797 if (t
->to_flash_done
!= NULL
)
1800 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1801 t
->to_flash_done (t
);
1809 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1810 struct cmd_list_element
*c
, const char *value
)
1812 fprintf_filtered (file
,
1813 _("Mode for reading from readonly sections is %s.\n"),
1817 /* More generic transfers. */
1819 static enum target_xfer_status
1820 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1821 const char *annex
, gdb_byte
*readbuf
,
1822 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1823 ULONGEST
*xfered_len
)
1825 if (object
== TARGET_OBJECT_MEMORY
1826 && ops
->deprecated_xfer_memory
!= NULL
)
1827 /* If available, fall back to the target's
1828 "deprecated_xfer_memory" method. */
1833 if (writebuf
!= NULL
)
1835 void *buffer
= xmalloc (len
);
1836 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1838 memcpy (buffer
, writebuf
, len
);
1839 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1840 1/*write*/, NULL
, ops
);
1841 do_cleanups (cleanup
);
1843 if (readbuf
!= NULL
)
1844 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1845 0/*read*/, NULL
, ops
);
1848 *xfered_len
= (ULONGEST
) xfered
;
1849 return TARGET_XFER_E_IO
;
1851 else if (xfered
== 0 && errno
== 0)
1852 /* "deprecated_xfer_memory" uses 0, cross checked against
1853 ERRNO as one indication of an error. */
1854 return TARGET_XFER_EOF
;
1856 return TARGET_XFER_E_IO
;
1860 gdb_assert (ops
->beneath
!= NULL
);
1861 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1862 readbuf
, writebuf
, offset
, len
,
1867 /* Target vector read/write partial wrapper functions. */
1869 static enum target_xfer_status
1870 target_read_partial (struct target_ops
*ops
,
1871 enum target_object object
,
1872 const char *annex
, gdb_byte
*buf
,
1873 ULONGEST offset
, ULONGEST len
,
1874 ULONGEST
*xfered_len
)
1876 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
1880 static enum target_xfer_status
1881 target_write_partial (struct target_ops
*ops
,
1882 enum target_object object
,
1883 const char *annex
, const gdb_byte
*buf
,
1884 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
1886 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
1890 /* Wrappers to perform the full transfer. */
1892 /* For docs on target_read see target.h. */
1895 target_read (struct target_ops
*ops
,
1896 enum target_object object
,
1897 const char *annex
, gdb_byte
*buf
,
1898 ULONGEST offset
, LONGEST len
)
1902 while (xfered
< len
)
1904 ULONGEST xfered_len
;
1905 enum target_xfer_status status
;
1907 status
= target_read_partial (ops
, object
, annex
,
1908 (gdb_byte
*) buf
+ xfered
,
1909 offset
+ xfered
, len
- xfered
,
1912 /* Call an observer, notifying them of the xfer progress? */
1913 if (status
== TARGET_XFER_EOF
)
1915 else if (status
== TARGET_XFER_OK
)
1917 xfered
+= xfered_len
;
1927 /* Assuming that the entire [begin, end) range of memory cannot be
1928 read, try to read whatever subrange is possible to read.
1930 The function returns, in RESULT, either zero or one memory block.
1931 If there's a readable subrange at the beginning, it is completely
1932 read and returned. Any further readable subrange will not be read.
1933 Otherwise, if there's a readable subrange at the end, it will be
1934 completely read and returned. Any readable subranges before it
1935 (obviously, not starting at the beginning), will be ignored. In
1936 other cases -- either no readable subrange, or readable subrange(s)
1937 that is neither at the beginning, or end, nothing is returned.
1939 The purpose of this function is to handle a read across a boundary
1940 of accessible memory in a case when memory map is not available.
1941 The above restrictions are fine for this case, but will give
1942 incorrect results if the memory is 'patchy'. However, supporting
1943 'patchy' memory would require trying to read every single byte,
1944 and it seems unacceptable solution. Explicit memory map is
1945 recommended for this case -- and target_read_memory_robust will
1946 take care of reading multiple ranges then. */
1949 read_whatever_is_readable (struct target_ops
*ops
,
1950 ULONGEST begin
, ULONGEST end
,
1951 VEC(memory_read_result_s
) **result
)
1953 gdb_byte
*buf
= xmalloc (end
- begin
);
1954 ULONGEST current_begin
= begin
;
1955 ULONGEST current_end
= end
;
1957 memory_read_result_s r
;
1958 ULONGEST xfered_len
;
1960 /* If we previously failed to read 1 byte, nothing can be done here. */
1961 if (end
- begin
<= 1)
1967 /* Check that either first or the last byte is readable, and give up
1968 if not. This heuristic is meant to permit reading accessible memory
1969 at the boundary of accessible region. */
1970 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1971 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
1976 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1977 buf
+ (end
-begin
) - 1, end
- 1, 1,
1978 &xfered_len
) == TARGET_XFER_OK
)
1989 /* Loop invariant is that the [current_begin, current_end) was previously
1990 found to be not readable as a whole.
1992 Note loop condition -- if the range has 1 byte, we can't divide the range
1993 so there's no point trying further. */
1994 while (current_end
- current_begin
> 1)
1996 ULONGEST first_half_begin
, first_half_end
;
1997 ULONGEST second_half_begin
, second_half_end
;
1999 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2003 first_half_begin
= current_begin
;
2004 first_half_end
= middle
;
2005 second_half_begin
= middle
;
2006 second_half_end
= current_end
;
2010 first_half_begin
= middle
;
2011 first_half_end
= current_end
;
2012 second_half_begin
= current_begin
;
2013 second_half_end
= middle
;
2016 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2017 buf
+ (first_half_begin
- begin
),
2019 first_half_end
- first_half_begin
);
2021 if (xfer
== first_half_end
- first_half_begin
)
2023 /* This half reads up fine. So, the error must be in the
2025 current_begin
= second_half_begin
;
2026 current_end
= second_half_end
;
2030 /* This half is not readable. Because we've tried one byte, we
2031 know some part of this half if actually redable. Go to the next
2032 iteration to divide again and try to read.
2034 We don't handle the other half, because this function only tries
2035 to read a single readable subrange. */
2036 current_begin
= first_half_begin
;
2037 current_end
= first_half_end
;
2043 /* The [begin, current_begin) range has been read. */
2045 r
.end
= current_begin
;
2050 /* The [current_end, end) range has been read. */
2051 LONGEST rlen
= end
- current_end
;
2053 r
.data
= xmalloc (rlen
);
2054 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2055 r
.begin
= current_end
;
2059 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2063 free_memory_read_result_vector (void *x
)
2065 VEC(memory_read_result_s
) *v
= x
;
2066 memory_read_result_s
*current
;
2069 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2071 xfree (current
->data
);
2073 VEC_free (memory_read_result_s
, v
);
2076 VEC(memory_read_result_s
) *
2077 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2079 VEC(memory_read_result_s
) *result
= 0;
2082 while (xfered
< len
)
2084 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2087 /* If there is no explicit region, a fake one should be created. */
2088 gdb_assert (region
);
2090 if (region
->hi
== 0)
2091 rlen
= len
- xfered
;
2093 rlen
= region
->hi
- offset
;
2095 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2097 /* Cannot read this region. Note that we can end up here only
2098 if the region is explicitly marked inaccessible, or
2099 'inaccessible-by-default' is in effect. */
2104 LONGEST to_read
= min (len
- xfered
, rlen
);
2105 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2107 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2108 (gdb_byte
*) buffer
,
2109 offset
+ xfered
, to_read
);
2110 /* Call an observer, notifying them of the xfer progress? */
2113 /* Got an error reading full chunk. See if maybe we can read
2116 read_whatever_is_readable (ops
, offset
+ xfered
,
2117 offset
+ xfered
+ to_read
, &result
);
2122 struct memory_read_result r
;
2124 r
.begin
= offset
+ xfered
;
2125 r
.end
= r
.begin
+ xfer
;
2126 VEC_safe_push (memory_read_result_s
, result
, &r
);
2136 /* An alternative to target_write with progress callbacks. */
2139 target_write_with_progress (struct target_ops
*ops
,
2140 enum target_object object
,
2141 const char *annex
, const gdb_byte
*buf
,
2142 ULONGEST offset
, LONGEST len
,
2143 void (*progress
) (ULONGEST
, void *), void *baton
)
2147 /* Give the progress callback a chance to set up. */
2149 (*progress
) (0, baton
);
2151 while (xfered
< len
)
2153 ULONGEST xfered_len
;
2154 enum target_xfer_status status
;
2156 status
= target_write_partial (ops
, object
, annex
,
2157 (gdb_byte
*) buf
+ xfered
,
2158 offset
+ xfered
, len
- xfered
,
2161 if (status
== TARGET_XFER_EOF
)
2163 if (TARGET_XFER_STATUS_ERROR_P (status
))
2166 gdb_assert (status
== TARGET_XFER_OK
);
2168 (*progress
) (xfered_len
, baton
);
2170 xfered
+= xfered_len
;
2176 /* For docs on target_write see target.h. */
2179 target_write (struct target_ops
*ops
,
2180 enum target_object object
,
2181 const char *annex
, const gdb_byte
*buf
,
2182 ULONGEST offset
, LONGEST len
)
2184 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2188 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2189 the size of the transferred data. PADDING additional bytes are
2190 available in *BUF_P. This is a helper function for
2191 target_read_alloc; see the declaration of that function for more
2195 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2196 const char *annex
, gdb_byte
**buf_p
, int padding
)
2198 size_t buf_alloc
, buf_pos
;
2201 /* This function does not have a length parameter; it reads the
2202 entire OBJECT). Also, it doesn't support objects fetched partly
2203 from one target and partly from another (in a different stratum,
2204 e.g. a core file and an executable). Both reasons make it
2205 unsuitable for reading memory. */
2206 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2208 /* Start by reading up to 4K at a time. The target will throttle
2209 this number down if necessary. */
2211 buf
= xmalloc (buf_alloc
);
2215 ULONGEST xfered_len
;
2216 enum target_xfer_status status
;
2218 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2219 buf_pos
, buf_alloc
- buf_pos
- padding
,
2222 if (status
== TARGET_XFER_EOF
)
2224 /* Read all there was. */
2231 else if (status
!= TARGET_XFER_OK
)
2233 /* An error occurred. */
2235 return TARGET_XFER_E_IO
;
2238 buf_pos
+= xfered_len
;
2240 /* If the buffer is filling up, expand it. */
2241 if (buf_alloc
< buf_pos
* 2)
2244 buf
= xrealloc (buf
, buf_alloc
);
2251 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2252 the size of the transferred data. See the declaration in "target.h"
2253 function for more information about the return value. */
2256 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2257 const char *annex
, gdb_byte
**buf_p
)
2259 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2262 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2263 returned as a string, allocated using xmalloc. If an error occurs
2264 or the transfer is unsupported, NULL is returned. Empty objects
2265 are returned as allocated but empty strings. A warning is issued
2266 if the result contains any embedded NUL bytes. */
2269 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2274 LONGEST i
, transferred
;
2276 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2277 bufstr
= (char *) buffer
;
2279 if (transferred
< 0)
2282 if (transferred
== 0)
2283 return xstrdup ("");
2285 bufstr
[transferred
] = 0;
2287 /* Check for embedded NUL bytes; but allow trailing NULs. */
2288 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2291 warning (_("target object %d, annex %s, "
2292 "contained unexpected null characters"),
2293 (int) object
, annex
? annex
: "(none)");
2300 /* Memory transfer methods. */
2303 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2306 /* This method is used to read from an alternate, non-current
2307 target. This read must bypass the overlay support (as symbols
2308 don't match this target), and GDB's internal cache (wrong cache
2309 for this target). */
2310 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2312 memory_error (TARGET_XFER_E_IO
, addr
);
2316 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2317 int len
, enum bfd_endian byte_order
)
2319 gdb_byte buf
[sizeof (ULONGEST
)];
2321 gdb_assert (len
<= sizeof (buf
));
2322 get_target_memory (ops
, addr
, buf
, len
);
2323 return extract_unsigned_integer (buf
, len
, byte_order
);
2329 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2330 struct bp_target_info
*bp_tgt
)
2332 if (!may_insert_breakpoints
)
2334 warning (_("May not insert breakpoints"));
2338 return current_target
.to_insert_breakpoint (¤t_target
,
2345 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2346 struct bp_target_info
*bp_tgt
)
2348 /* This is kind of a weird case to handle, but the permission might
2349 have been changed after breakpoints were inserted - in which case
2350 we should just take the user literally and assume that any
2351 breakpoints should be left in place. */
2352 if (!may_insert_breakpoints
)
2354 warning (_("May not remove breakpoints"));
2358 return current_target
.to_remove_breakpoint (¤t_target
,
2363 target_info (char *args
, int from_tty
)
2365 struct target_ops
*t
;
2366 int has_all_mem
= 0;
2368 if (symfile_objfile
!= NULL
)
2369 printf_unfiltered (_("Symbols from \"%s\".\n"),
2370 objfile_name (symfile_objfile
));
2372 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2374 if (!(*t
->to_has_memory
) (t
))
2377 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2380 printf_unfiltered (_("\tWhile running this, "
2381 "GDB does not access memory from...\n"));
2382 printf_unfiltered ("%s:\n", t
->to_longname
);
2383 (t
->to_files_info
) (t
);
2384 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2388 /* This function is called before any new inferior is created, e.g.
2389 by running a program, attaching, or connecting to a target.
2390 It cleans up any state from previous invocations which might
2391 change between runs. This is a subset of what target_preopen
2392 resets (things which might change between targets). */
2395 target_pre_inferior (int from_tty
)
2397 /* Clear out solib state. Otherwise the solib state of the previous
2398 inferior might have survived and is entirely wrong for the new
2399 target. This has been observed on GNU/Linux using glibc 2.3. How
2411 Cannot access memory at address 0xdeadbeef
2414 /* In some OSs, the shared library list is the same/global/shared
2415 across inferiors. If code is shared between processes, so are
2416 memory regions and features. */
2417 if (!gdbarch_has_global_solist (target_gdbarch ()))
2419 no_shared_libraries (NULL
, from_tty
);
2421 invalidate_target_mem_regions ();
2423 target_clear_description ();
2426 agent_capability_invalidate ();
2429 /* Callback for iterate_over_inferiors. Gets rid of the given
2433 dispose_inferior (struct inferior
*inf
, void *args
)
2435 struct thread_info
*thread
;
2437 thread
= any_thread_of_process (inf
->pid
);
2440 switch_to_thread (thread
->ptid
);
2442 /* Core inferiors actually should be detached, not killed. */
2443 if (target_has_execution
)
2446 target_detach (NULL
, 0);
2452 /* This is to be called by the open routine before it does
2456 target_preopen (int from_tty
)
2460 if (have_inferiors ())
2463 || !have_live_inferiors ()
2464 || query (_("A program is being debugged already. Kill it? ")))
2465 iterate_over_inferiors (dispose_inferior
, NULL
);
2467 error (_("Program not killed."));
2470 /* Calling target_kill may remove the target from the stack. But if
2471 it doesn't (which seems like a win for UDI), remove it now. */
2472 /* Leave the exec target, though. The user may be switching from a
2473 live process to a core of the same program. */
2474 pop_all_targets_above (file_stratum
);
2476 target_pre_inferior (from_tty
);
2479 /* Detach a target after doing deferred register stores. */
2482 target_detach (const char *args
, int from_tty
)
2484 struct target_ops
* t
;
2486 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2487 /* Don't remove global breakpoints here. They're removed on
2488 disconnection from the target. */
2491 /* If we're in breakpoints-always-inserted mode, have to remove
2492 them before detaching. */
2493 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2495 prepare_for_detach ();
2497 current_target
.to_detach (¤t_target
, args
, from_tty
);
2499 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2504 target_disconnect (char *args
, int from_tty
)
2506 struct target_ops
*t
;
2508 /* If we're in breakpoints-always-inserted mode or if breakpoints
2509 are global across processes, we have to remove them before
2511 remove_breakpoints ();
2513 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2514 if (t
->to_disconnect
!= NULL
)
2517 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2519 t
->to_disconnect (t
, args
, from_tty
);
2527 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2529 struct target_ops
*t
;
2530 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2535 char *status_string
;
2536 char *options_string
;
2538 status_string
= target_waitstatus_to_string (status
);
2539 options_string
= target_options_to_string (options
);
2540 fprintf_unfiltered (gdb_stdlog
,
2541 "target_wait (%d, status, options={%s})"
2543 ptid_get_pid (ptid
), options_string
,
2544 ptid_get_pid (retval
), status_string
);
2545 xfree (status_string
);
2546 xfree (options_string
);
2553 target_pid_to_str (ptid_t ptid
)
2555 struct target_ops
*t
;
2557 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2559 if (t
->to_pid_to_str
!= NULL
)
2560 return (*t
->to_pid_to_str
) (t
, ptid
);
2563 return normal_pid_to_str (ptid
);
2567 target_thread_name (struct thread_info
*info
)
2569 return current_target
.to_thread_name (¤t_target
, info
);
2573 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2575 struct target_ops
*t
;
2577 target_dcache_invalidate ();
2579 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2581 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2582 ptid_get_pid (ptid
),
2583 step
? "step" : "continue",
2584 gdb_signal_to_name (signal
));
2586 registers_changed_ptid (ptid
);
2587 set_executing (ptid
, 1);
2588 set_running (ptid
, 1);
2589 clear_inline_frame_state (ptid
);
2593 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2595 struct target_ops
*t
;
2597 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2599 if (t
->to_pass_signals
!= NULL
)
2605 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2608 for (i
= 0; i
< numsigs
; i
++)
2609 if (pass_signals
[i
])
2610 fprintf_unfiltered (gdb_stdlog
, " %s",
2611 gdb_signal_to_name (i
));
2613 fprintf_unfiltered (gdb_stdlog
, " })\n");
2616 (*t
->to_pass_signals
) (t
, numsigs
, pass_signals
);
2623 target_program_signals (int numsigs
, unsigned char *program_signals
)
2625 struct target_ops
*t
;
2627 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2629 if (t
->to_program_signals
!= NULL
)
2635 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2638 for (i
= 0; i
< numsigs
; i
++)
2639 if (program_signals
[i
])
2640 fprintf_unfiltered (gdb_stdlog
, " %s",
2641 gdb_signal_to_name (i
));
2643 fprintf_unfiltered (gdb_stdlog
, " })\n");
2646 (*t
->to_program_signals
) (t
, numsigs
, program_signals
);
2652 /* Look through the list of possible targets for a target that can
2656 target_follow_fork (int follow_child
, int detach_fork
)
2658 struct target_ops
*t
;
2660 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2662 if (t
->to_follow_fork
!= NULL
)
2664 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2667 fprintf_unfiltered (gdb_stdlog
,
2668 "target_follow_fork (%d, %d) = %d\n",
2669 follow_child
, detach_fork
, retval
);
2674 /* Some target returned a fork event, but did not know how to follow it. */
2675 internal_error (__FILE__
, __LINE__
,
2676 _("could not find a target to follow fork"));
2680 target_mourn_inferior (void)
2682 struct target_ops
*t
;
2684 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2686 if (t
->to_mourn_inferior
!= NULL
)
2688 t
->to_mourn_inferior (t
);
2690 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2692 /* We no longer need to keep handles on any of the object files.
2693 Make sure to release them to avoid unnecessarily locking any
2694 of them while we're not actually debugging. */
2695 bfd_cache_close_all ();
2701 internal_error (__FILE__
, __LINE__
,
2702 _("could not find a target to follow mourn inferior"));
2705 /* Look for a target which can describe architectural features, starting
2706 from TARGET. If we find one, return its description. */
2708 const struct target_desc
*
2709 target_read_description (struct target_ops
*target
)
2711 struct target_ops
*t
;
2713 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2714 if (t
->to_read_description
!= NULL
)
2716 const struct target_desc
*tdesc
;
2718 tdesc
= t
->to_read_description (t
);
2726 /* The default implementation of to_search_memory.
2727 This implements a basic search of memory, reading target memory and
2728 performing the search here (as opposed to performing the search in on the
2729 target side with, for example, gdbserver). */
2732 simple_search_memory (struct target_ops
*ops
,
2733 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2734 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2735 CORE_ADDR
*found_addrp
)
2737 /* NOTE: also defined in find.c testcase. */
2738 #define SEARCH_CHUNK_SIZE 16000
2739 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2740 /* Buffer to hold memory contents for searching. */
2741 gdb_byte
*search_buf
;
2742 unsigned search_buf_size
;
2743 struct cleanup
*old_cleanups
;
2745 search_buf_size
= chunk_size
+ pattern_len
- 1;
2747 /* No point in trying to allocate a buffer larger than the search space. */
2748 if (search_space_len
< search_buf_size
)
2749 search_buf_size
= search_space_len
;
2751 search_buf
= malloc (search_buf_size
);
2752 if (search_buf
== NULL
)
2753 error (_("Unable to allocate memory to perform the search."));
2754 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2756 /* Prime the search buffer. */
2758 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2759 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2761 warning (_("Unable to access %s bytes of target "
2762 "memory at %s, halting search."),
2763 pulongest (search_buf_size
), hex_string (start_addr
));
2764 do_cleanups (old_cleanups
);
2768 /* Perform the search.
2770 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2771 When we've scanned N bytes we copy the trailing bytes to the start and
2772 read in another N bytes. */
2774 while (search_space_len
>= pattern_len
)
2776 gdb_byte
*found_ptr
;
2777 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2779 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2780 pattern
, pattern_len
);
2782 if (found_ptr
!= NULL
)
2784 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2786 *found_addrp
= found_addr
;
2787 do_cleanups (old_cleanups
);
2791 /* Not found in this chunk, skip to next chunk. */
2793 /* Don't let search_space_len wrap here, it's unsigned. */
2794 if (search_space_len
>= chunk_size
)
2795 search_space_len
-= chunk_size
;
2797 search_space_len
= 0;
2799 if (search_space_len
>= pattern_len
)
2801 unsigned keep_len
= search_buf_size
- chunk_size
;
2802 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2805 /* Copy the trailing part of the previous iteration to the front
2806 of the buffer for the next iteration. */
2807 gdb_assert (keep_len
== pattern_len
- 1);
2808 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2810 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2812 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2813 search_buf
+ keep_len
, read_addr
,
2814 nr_to_read
) != nr_to_read
)
2816 warning (_("Unable to access %s bytes of target "
2817 "memory at %s, halting search."),
2818 plongest (nr_to_read
),
2819 hex_string (read_addr
));
2820 do_cleanups (old_cleanups
);
2824 start_addr
+= chunk_size
;
2830 do_cleanups (old_cleanups
);
2834 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2835 sequence of bytes in PATTERN with length PATTERN_LEN.
2837 The result is 1 if found, 0 if not found, and -1 if there was an error
2838 requiring halting of the search (e.g. memory read error).
2839 If the pattern is found the address is recorded in FOUND_ADDRP. */
2842 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2843 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2844 CORE_ADDR
*found_addrp
)
2846 struct target_ops
*t
;
2849 /* We don't use INHERIT to set current_target.to_search_memory,
2850 so we have to scan the target stack and handle targetdebug
2854 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2855 hex_string (start_addr
));
2857 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2858 if (t
->to_search_memory
!= NULL
)
2863 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2864 pattern
, pattern_len
, found_addrp
);
2868 /* If a special version of to_search_memory isn't available, use the
2870 found
= simple_search_memory (current_target
.beneath
,
2871 start_addr
, search_space_len
,
2872 pattern
, pattern_len
, found_addrp
);
2876 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2881 /* Look through the currently pushed targets. If none of them will
2882 be able to restart the currently running process, issue an error
2886 target_require_runnable (void)
2888 struct target_ops
*t
;
2890 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2892 /* If this target knows how to create a new program, then
2893 assume we will still be able to after killing the current
2894 one. Either killing and mourning will not pop T, or else
2895 find_default_run_target will find it again. */
2896 if (t
->to_create_inferior
!= NULL
)
2899 /* Do not worry about thread_stratum targets that can not
2900 create inferiors. Assume they will be pushed again if
2901 necessary, and continue to the process_stratum. */
2902 if (t
->to_stratum
== thread_stratum
2903 || t
->to_stratum
== arch_stratum
)
2906 error (_("The \"%s\" target does not support \"run\". "
2907 "Try \"help target\" or \"continue\"."),
2911 /* This function is only called if the target is running. In that
2912 case there should have been a process_stratum target and it
2913 should either know how to create inferiors, or not... */
2914 internal_error (__FILE__
, __LINE__
, _("No targets found"));
2917 /* Look through the list of possible targets for a target that can
2918 execute a run or attach command without any other data. This is
2919 used to locate the default process stratum.
2921 If DO_MESG is not NULL, the result is always valid (error() is
2922 called for errors); else, return NULL on error. */
2924 static struct target_ops
*
2925 find_default_run_target (char *do_mesg
)
2927 struct target_ops
**t
;
2928 struct target_ops
*runable
= NULL
;
2933 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2936 if ((*t
)->to_can_run
&& target_can_run (*t
))
2946 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
2955 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
2957 struct target_ops
*t
;
2959 t
= find_default_run_target ("attach");
2960 (t
->to_attach
) (t
, args
, from_tty
);
2965 find_default_create_inferior (struct target_ops
*ops
,
2966 char *exec_file
, char *allargs
, char **env
,
2969 struct target_ops
*t
;
2971 t
= find_default_run_target ("run");
2972 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
2977 find_default_can_async_p (struct target_ops
*ignore
)
2979 struct target_ops
*t
;
2981 /* This may be called before the target is pushed on the stack;
2982 look for the default process stratum. If there's none, gdb isn't
2983 configured with a native debugger, and target remote isn't
2985 t
= find_default_run_target (NULL
);
2986 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
2987 return (t
->to_can_async_p
) (t
);
2992 find_default_is_async_p (struct target_ops
*ignore
)
2994 struct target_ops
*t
;
2996 /* This may be called before the target is pushed on the stack;
2997 look for the default process stratum. If there's none, gdb isn't
2998 configured with a native debugger, and target remote isn't
3000 t
= find_default_run_target (NULL
);
3001 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
3002 return (t
->to_is_async_p
) (t
);
3007 find_default_supports_non_stop (struct target_ops
*self
)
3009 struct target_ops
*t
;
3011 t
= find_default_run_target (NULL
);
3012 if (t
&& t
->to_supports_non_stop
)
3013 return (t
->to_supports_non_stop
) (t
);
3018 target_supports_non_stop (void)
3020 struct target_ops
*t
;
3022 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3023 if (t
->to_supports_non_stop
)
3024 return t
->to_supports_non_stop (t
);
3029 /* Implement the "info proc" command. */
3032 target_info_proc (char *args
, enum info_proc_what what
)
3034 struct target_ops
*t
;
3036 /* If we're already connected to something that can get us OS
3037 related data, use it. Otherwise, try using the native
3039 if (current_target
.to_stratum
>= process_stratum
)
3040 t
= current_target
.beneath
;
3042 t
= find_default_run_target (NULL
);
3044 for (; t
!= NULL
; t
= t
->beneath
)
3046 if (t
->to_info_proc
!= NULL
)
3048 t
->to_info_proc (t
, args
, what
);
3051 fprintf_unfiltered (gdb_stdlog
,
3052 "target_info_proc (\"%s\", %d)\n", args
, what
);
3062 find_default_supports_disable_randomization (struct target_ops
*self
)
3064 struct target_ops
*t
;
3066 t
= find_default_run_target (NULL
);
3067 if (t
&& t
->to_supports_disable_randomization
)
3068 return (t
->to_supports_disable_randomization
) (t
);
3073 target_supports_disable_randomization (void)
3075 struct target_ops
*t
;
3077 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3078 if (t
->to_supports_disable_randomization
)
3079 return t
->to_supports_disable_randomization (t
);
3085 target_get_osdata (const char *type
)
3087 struct target_ops
*t
;
3089 /* If we're already connected to something that can get us OS
3090 related data, use it. Otherwise, try using the native
3092 if (current_target
.to_stratum
>= process_stratum
)
3093 t
= current_target
.beneath
;
3095 t
= find_default_run_target ("get OS data");
3100 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3103 /* Determine the current address space of thread PTID. */
3105 struct address_space
*
3106 target_thread_address_space (ptid_t ptid
)
3108 struct address_space
*aspace
;
3109 struct inferior
*inf
;
3110 struct target_ops
*t
;
3112 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3114 if (t
->to_thread_address_space
!= NULL
)
3116 aspace
= t
->to_thread_address_space (t
, ptid
);
3117 gdb_assert (aspace
);
3120 fprintf_unfiltered (gdb_stdlog
,
3121 "target_thread_address_space (%s) = %d\n",
3122 target_pid_to_str (ptid
),
3123 address_space_num (aspace
));
3128 /* Fall-back to the "main" address space of the inferior. */
3129 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3131 if (inf
== NULL
|| inf
->aspace
== NULL
)
3132 internal_error (__FILE__
, __LINE__
,
3133 _("Can't determine the current "
3134 "address space of thread %s\n"),
3135 target_pid_to_str (ptid
));
3141 /* Target file operations. */
3143 static struct target_ops
*
3144 default_fileio_target (void)
3146 /* If we're already connected to something that can perform
3147 file I/O, use it. Otherwise, try using the native target. */
3148 if (current_target
.to_stratum
>= process_stratum
)
3149 return current_target
.beneath
;
3151 return find_default_run_target ("file I/O");
3154 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3155 target file descriptor, or -1 if an error occurs (and set
3158 target_fileio_open (const char *filename
, int flags
, int mode
,
3161 struct target_ops
*t
;
3163 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3165 if (t
->to_fileio_open
!= NULL
)
3167 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3170 fprintf_unfiltered (gdb_stdlog
,
3171 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3172 filename
, flags
, mode
,
3173 fd
, fd
!= -1 ? 0 : *target_errno
);
3178 *target_errno
= FILEIO_ENOSYS
;
3182 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3183 Return the number of bytes written, or -1 if an error occurs
3184 (and set *TARGET_ERRNO). */
3186 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3187 ULONGEST offset
, int *target_errno
)
3189 struct target_ops
*t
;
3191 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3193 if (t
->to_fileio_pwrite
!= NULL
)
3195 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3199 fprintf_unfiltered (gdb_stdlog
,
3200 "target_fileio_pwrite (%d,...,%d,%s) "
3202 fd
, len
, pulongest (offset
),
3203 ret
, ret
!= -1 ? 0 : *target_errno
);
3208 *target_errno
= FILEIO_ENOSYS
;
3212 /* Read up to LEN bytes FD on the target into READ_BUF.
3213 Return the number of bytes read, or -1 if an error occurs
3214 (and set *TARGET_ERRNO). */
3216 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3217 ULONGEST offset
, int *target_errno
)
3219 struct target_ops
*t
;
3221 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3223 if (t
->to_fileio_pread
!= NULL
)
3225 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3229 fprintf_unfiltered (gdb_stdlog
,
3230 "target_fileio_pread (%d,...,%d,%s) "
3232 fd
, len
, pulongest (offset
),
3233 ret
, ret
!= -1 ? 0 : *target_errno
);
3238 *target_errno
= FILEIO_ENOSYS
;
3242 /* Close FD on the target. Return 0, or -1 if an error occurs
3243 (and set *TARGET_ERRNO). */
3245 target_fileio_close (int fd
, int *target_errno
)
3247 struct target_ops
*t
;
3249 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3251 if (t
->to_fileio_close
!= NULL
)
3253 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3256 fprintf_unfiltered (gdb_stdlog
,
3257 "target_fileio_close (%d) = %d (%d)\n",
3258 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3263 *target_errno
= FILEIO_ENOSYS
;
3267 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3268 occurs (and set *TARGET_ERRNO). */
3270 target_fileio_unlink (const char *filename
, int *target_errno
)
3272 struct target_ops
*t
;
3274 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3276 if (t
->to_fileio_unlink
!= NULL
)
3278 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3281 fprintf_unfiltered (gdb_stdlog
,
3282 "target_fileio_unlink (%s) = %d (%d)\n",
3283 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3288 *target_errno
= FILEIO_ENOSYS
;
3292 /* Read value of symbolic link FILENAME on the target. Return a
3293 null-terminated string allocated via xmalloc, or NULL if an error
3294 occurs (and set *TARGET_ERRNO). */
3296 target_fileio_readlink (const char *filename
, int *target_errno
)
3298 struct target_ops
*t
;
3300 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3302 if (t
->to_fileio_readlink
!= NULL
)
3304 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3307 fprintf_unfiltered (gdb_stdlog
,
3308 "target_fileio_readlink (%s) = %s (%d)\n",
3309 filename
, ret
? ret
: "(nil)",
3310 ret
? 0 : *target_errno
);
3315 *target_errno
= FILEIO_ENOSYS
;
3320 target_fileio_close_cleanup (void *opaque
)
3322 int fd
= *(int *) opaque
;
3325 target_fileio_close (fd
, &target_errno
);
3328 /* Read target file FILENAME. Store the result in *BUF_P and
3329 return the size of the transferred data. PADDING additional bytes are
3330 available in *BUF_P. This is a helper function for
3331 target_fileio_read_alloc; see the declaration of that function for more
3335 target_fileio_read_alloc_1 (const char *filename
,
3336 gdb_byte
**buf_p
, int padding
)
3338 struct cleanup
*close_cleanup
;
3339 size_t buf_alloc
, buf_pos
;
3345 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3349 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3351 /* Start by reading up to 4K at a time. The target will throttle
3352 this number down if necessary. */
3354 buf
= xmalloc (buf_alloc
);
3358 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3359 buf_alloc
- buf_pos
- padding
, buf_pos
,
3363 /* An error occurred. */
3364 do_cleanups (close_cleanup
);
3370 /* Read all there was. */
3371 do_cleanups (close_cleanup
);
3381 /* If the buffer is filling up, expand it. */
3382 if (buf_alloc
< buf_pos
* 2)
3385 buf
= xrealloc (buf
, buf_alloc
);
3392 /* Read target file FILENAME. Store the result in *BUF_P and return
3393 the size of the transferred data. See the declaration in "target.h"
3394 function for more information about the return value. */
3397 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3399 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3402 /* Read target file FILENAME. The result is NUL-terminated and
3403 returned as a string, allocated using xmalloc. If an error occurs
3404 or the transfer is unsupported, NULL is returned. Empty objects
3405 are returned as allocated but empty strings. A warning is issued
3406 if the result contains any embedded NUL bytes. */
3409 target_fileio_read_stralloc (const char *filename
)
3413 LONGEST i
, transferred
;
3415 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3416 bufstr
= (char *) buffer
;
3418 if (transferred
< 0)
3421 if (transferred
== 0)
3422 return xstrdup ("");
3424 bufstr
[transferred
] = 0;
3426 /* Check for embedded NUL bytes; but allow trailing NULs. */
3427 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3430 warning (_("target file %s "
3431 "contained unexpected null characters"),
3441 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3442 CORE_ADDR addr
, int len
)
3444 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3448 default_watchpoint_addr_within_range (struct target_ops
*target
,
3450 CORE_ADDR start
, int length
)
3452 return addr
>= start
&& addr
< start
+ length
;
3455 static struct gdbarch
*
3456 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3458 return target_gdbarch ();
3468 * Find the next target down the stack from the specified target.
3472 find_target_beneath (struct target_ops
*t
)
3480 find_target_at (enum strata stratum
)
3482 struct target_ops
*t
;
3484 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3485 if (t
->to_stratum
== stratum
)
3492 /* The inferior process has died. Long live the inferior! */
3495 generic_mourn_inferior (void)
3499 ptid
= inferior_ptid
;
3500 inferior_ptid
= null_ptid
;
3502 /* Mark breakpoints uninserted in case something tries to delete a
3503 breakpoint while we delete the inferior's threads (which would
3504 fail, since the inferior is long gone). */
3505 mark_breakpoints_out ();
3507 if (!ptid_equal (ptid
, null_ptid
))
3509 int pid
= ptid_get_pid (ptid
);
3510 exit_inferior (pid
);
3513 /* Note this wipes step-resume breakpoints, so needs to be done
3514 after exit_inferior, which ends up referencing the step-resume
3515 breakpoints through clear_thread_inferior_resources. */
3516 breakpoint_init_inferior (inf_exited
);
3518 registers_changed ();
3520 reopen_exec_file ();
3521 reinit_frame_cache ();
3523 if (deprecated_detach_hook
)
3524 deprecated_detach_hook ();
3527 /* Convert a normal process ID to a string. Returns the string in a
3531 normal_pid_to_str (ptid_t ptid
)
3533 static char buf
[32];
3535 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3540 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3542 return normal_pid_to_str (ptid
);
3545 /* Error-catcher for target_find_memory_regions. */
3547 dummy_find_memory_regions (struct target_ops
*self
,
3548 find_memory_region_ftype ignore1
, void *ignore2
)
3550 error (_("Command not implemented for this target."));
3554 /* Error-catcher for target_make_corefile_notes. */
3556 dummy_make_corefile_notes (struct target_ops
*self
,
3557 bfd
*ignore1
, int *ignore2
)
3559 error (_("Command not implemented for this target."));
3563 /* Set up the handful of non-empty slots needed by the dummy target
3567 init_dummy_target (void)
3569 dummy_target
.to_shortname
= "None";
3570 dummy_target
.to_longname
= "None";
3571 dummy_target
.to_doc
= "";
3572 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3573 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3574 dummy_target
.to_supports_disable_randomization
3575 = find_default_supports_disable_randomization
;
3576 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3577 dummy_target
.to_stratum
= dummy_stratum
;
3578 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3579 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3580 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3581 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3582 dummy_target
.to_has_execution
3583 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3584 dummy_target
.to_magic
= OPS_MAGIC
;
3586 install_dummy_methods (&dummy_target
);
3590 debug_to_open (char *args
, int from_tty
)
3592 debug_target
.to_open (args
, from_tty
);
3594 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3598 target_close (struct target_ops
*targ
)
3600 gdb_assert (!target_is_pushed (targ
));
3602 if (targ
->to_xclose
!= NULL
)
3603 targ
->to_xclose (targ
);
3604 else if (targ
->to_close
!= NULL
)
3605 targ
->to_close (targ
);
3608 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3612 target_attach (char *args
, int from_tty
)
3614 current_target
.to_attach (¤t_target
, args
, from_tty
);
3616 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3621 target_thread_alive (ptid_t ptid
)
3623 struct target_ops
*t
;
3625 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3627 if (t
->to_thread_alive
!= NULL
)
3631 retval
= t
->to_thread_alive (t
, ptid
);
3633 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3634 ptid_get_pid (ptid
), retval
);
3644 target_find_new_threads (void)
3646 struct target_ops
*t
;
3648 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3650 if (t
->to_find_new_threads
!= NULL
)
3652 t
->to_find_new_threads (t
);
3654 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3662 target_stop (ptid_t ptid
)
3666 warning (_("May not interrupt or stop the target, ignoring attempt"));
3670 (*current_target
.to_stop
) (¤t_target
, ptid
);
3674 debug_to_post_attach (struct target_ops
*self
, int pid
)
3676 debug_target
.to_post_attach (&debug_target
, pid
);
3678 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3681 /* Concatenate ELEM to LIST, a comma separate list, and return the
3682 result. The LIST incoming argument is released. */
3685 str_comma_list_concat_elem (char *list
, const char *elem
)
3688 return xstrdup (elem
);
3690 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3693 /* Helper for target_options_to_string. If OPT is present in
3694 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3695 Returns the new resulting string. OPT is removed from
3699 do_option (int *target_options
, char *ret
,
3700 int opt
, char *opt_str
)
3702 if ((*target_options
& opt
) != 0)
3704 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3705 *target_options
&= ~opt
;
3712 target_options_to_string (int target_options
)
3716 #define DO_TARG_OPTION(OPT) \
3717 ret = do_option (&target_options, ret, OPT, #OPT)
3719 DO_TARG_OPTION (TARGET_WNOHANG
);
3721 if (target_options
!= 0)
3722 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3730 debug_print_register (const char * func
,
3731 struct regcache
*regcache
, int regno
)
3733 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3735 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3736 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3737 && gdbarch_register_name (gdbarch
, regno
) != NULL
3738 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3739 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3740 gdbarch_register_name (gdbarch
, regno
));
3742 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3743 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3745 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3746 int i
, size
= register_size (gdbarch
, regno
);
3747 gdb_byte buf
[MAX_REGISTER_SIZE
];
3749 regcache_raw_collect (regcache
, regno
, buf
);
3750 fprintf_unfiltered (gdb_stdlog
, " = ");
3751 for (i
= 0; i
< size
; i
++)
3753 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3755 if (size
<= sizeof (LONGEST
))
3757 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3759 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3760 core_addr_to_string_nz (val
), plongest (val
));
3763 fprintf_unfiltered (gdb_stdlog
, "\n");
3767 target_fetch_registers (struct regcache
*regcache
, int regno
)
3769 struct target_ops
*t
;
3771 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3773 if (t
->to_fetch_registers
!= NULL
)
3775 t
->to_fetch_registers (t
, regcache
, regno
);
3777 debug_print_register ("target_fetch_registers", regcache
, regno
);
3784 target_store_registers (struct regcache
*regcache
, int regno
)
3786 struct target_ops
*t
;
3788 if (!may_write_registers
)
3789 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3791 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3794 debug_print_register ("target_store_registers", regcache
, regno
);
3799 target_core_of_thread (ptid_t ptid
)
3801 struct target_ops
*t
;
3803 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3805 if (t
->to_core_of_thread
!= NULL
)
3807 int retval
= t
->to_core_of_thread (t
, ptid
);
3810 fprintf_unfiltered (gdb_stdlog
,
3811 "target_core_of_thread (%d) = %d\n",
3812 ptid_get_pid (ptid
), retval
);
3821 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3823 struct target_ops
*t
;
3825 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3827 if (t
->to_verify_memory
!= NULL
)
3829 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3832 fprintf_unfiltered (gdb_stdlog
,
3833 "target_verify_memory (%s, %s) = %d\n",
3834 paddress (target_gdbarch (), memaddr
),
3844 /* The documentation for this function is in its prototype declaration in
3848 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3850 struct target_ops
*t
;
3852 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3853 if (t
->to_insert_mask_watchpoint
!= NULL
)
3857 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
3860 fprintf_unfiltered (gdb_stdlog
, "\
3861 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3862 core_addr_to_string (addr
),
3863 core_addr_to_string (mask
), rw
, ret
);
3871 /* The documentation for this function is in its prototype declaration in
3875 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3877 struct target_ops
*t
;
3879 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3880 if (t
->to_remove_mask_watchpoint
!= NULL
)
3884 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
3887 fprintf_unfiltered (gdb_stdlog
, "\
3888 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3889 core_addr_to_string (addr
),
3890 core_addr_to_string (mask
), rw
, ret
);
3898 /* The documentation for this function is in its prototype declaration
3902 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
3904 struct target_ops
*t
;
3906 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3907 if (t
->to_masked_watch_num_registers
!= NULL
)
3908 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
3913 /* The documentation for this function is in its prototype declaration
3917 target_ranged_break_num_registers (void)
3919 struct target_ops
*t
;
3921 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3922 if (t
->to_ranged_break_num_registers
!= NULL
)
3923 return t
->to_ranged_break_num_registers (t
);
3930 struct btrace_target_info
*
3931 target_enable_btrace (ptid_t ptid
)
3933 struct target_ops
*t
;
3935 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3936 if (t
->to_enable_btrace
!= NULL
)
3937 return t
->to_enable_btrace (t
, ptid
);
3946 target_disable_btrace (struct btrace_target_info
*btinfo
)
3948 struct target_ops
*t
;
3950 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3951 if (t
->to_disable_btrace
!= NULL
)
3953 t
->to_disable_btrace (t
, btinfo
);
3963 target_teardown_btrace (struct btrace_target_info
*btinfo
)
3965 struct target_ops
*t
;
3967 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3968 if (t
->to_teardown_btrace
!= NULL
)
3970 t
->to_teardown_btrace (t
, btinfo
);
3980 target_read_btrace (VEC (btrace_block_s
) **btrace
,
3981 struct btrace_target_info
*btinfo
,
3982 enum btrace_read_type type
)
3984 struct target_ops
*t
;
3986 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3987 if (t
->to_read_btrace
!= NULL
)
3988 return t
->to_read_btrace (t
, btrace
, btinfo
, type
);
3991 return BTRACE_ERR_NOT_SUPPORTED
;
3997 target_stop_recording (void)
3999 struct target_ops
*t
;
4001 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4002 if (t
->to_stop_recording
!= NULL
)
4004 t
->to_stop_recording (t
);
4008 /* This is optional. */
4014 target_info_record (void)
4016 struct target_ops
*t
;
4018 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4019 if (t
->to_info_record
!= NULL
)
4021 t
->to_info_record (t
);
4031 target_save_record (const char *filename
)
4033 struct target_ops
*t
;
4035 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4036 if (t
->to_save_record
!= NULL
)
4038 t
->to_save_record (t
, filename
);
4048 target_supports_delete_record (void)
4050 struct target_ops
*t
;
4052 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4053 if (t
->to_delete_record
!= NULL
)
4062 target_delete_record (void)
4064 struct target_ops
*t
;
4066 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4067 if (t
->to_delete_record
!= NULL
)
4069 t
->to_delete_record (t
);
4079 target_record_is_replaying (void)
4081 struct target_ops
*t
;
4083 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4084 if (t
->to_record_is_replaying
!= NULL
)
4085 return t
->to_record_is_replaying (t
);
4093 target_goto_record_begin (void)
4095 struct target_ops
*t
;
4097 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4098 if (t
->to_goto_record_begin
!= NULL
)
4100 t
->to_goto_record_begin (t
);
4110 target_goto_record_end (void)
4112 struct target_ops
*t
;
4114 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4115 if (t
->to_goto_record_end
!= NULL
)
4117 t
->to_goto_record_end (t
);
4127 target_goto_record (ULONGEST insn
)
4129 struct target_ops
*t
;
4131 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4132 if (t
->to_goto_record
!= NULL
)
4134 t
->to_goto_record (t
, insn
);
4144 target_insn_history (int size
, int flags
)
4146 struct target_ops
*t
;
4148 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4149 if (t
->to_insn_history
!= NULL
)
4151 t
->to_insn_history (t
, size
, flags
);
4161 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4163 struct target_ops
*t
;
4165 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4166 if (t
->to_insn_history_from
!= NULL
)
4168 t
->to_insn_history_from (t
, from
, size
, flags
);
4178 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4180 struct target_ops
*t
;
4182 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4183 if (t
->to_insn_history_range
!= NULL
)
4185 t
->to_insn_history_range (t
, begin
, end
, flags
);
4195 target_call_history (int size
, int flags
)
4197 struct target_ops
*t
;
4199 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4200 if (t
->to_call_history
!= NULL
)
4202 t
->to_call_history (t
, size
, flags
);
4212 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4214 struct target_ops
*t
;
4216 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4217 if (t
->to_call_history_from
!= NULL
)
4219 t
->to_call_history_from (t
, begin
, size
, flags
);
4229 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4231 struct target_ops
*t
;
4233 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4234 if (t
->to_call_history_range
!= NULL
)
4236 t
->to_call_history_range (t
, begin
, end
, flags
);
4244 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
4246 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
4248 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4253 const struct frame_unwind
*
4254 target_get_unwinder (void)
4256 struct target_ops
*t
;
4258 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4259 if (t
->to_get_unwinder
!= NULL
)
4260 return t
->to_get_unwinder
;
4267 const struct frame_unwind
*
4268 target_get_tailcall_unwinder (void)
4270 struct target_ops
*t
;
4272 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4273 if (t
->to_get_tailcall_unwinder
!= NULL
)
4274 return t
->to_get_tailcall_unwinder
;
4282 forward_target_decr_pc_after_break (struct target_ops
*ops
,
4283 struct gdbarch
*gdbarch
)
4285 for (; ops
!= NULL
; ops
= ops
->beneath
)
4286 if (ops
->to_decr_pc_after_break
!= NULL
)
4287 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
4289 return gdbarch_decr_pc_after_break (gdbarch
);
4295 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
4297 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
4301 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4302 int write
, struct mem_attrib
*attrib
,
4303 struct target_ops
*target
)
4307 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4310 fprintf_unfiltered (gdb_stdlog
,
4311 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4312 paddress (target_gdbarch (), memaddr
), len
,
4313 write
? "write" : "read", retval
);
4319 fputs_unfiltered (", bytes =", gdb_stdlog
);
4320 for (i
= 0; i
< retval
; i
++)
4322 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4324 if (targetdebug
< 2 && i
> 0)
4326 fprintf_unfiltered (gdb_stdlog
, " ...");
4329 fprintf_unfiltered (gdb_stdlog
, "\n");
4332 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4336 fputc_unfiltered ('\n', gdb_stdlog
);
4342 debug_to_files_info (struct target_ops
*target
)
4344 debug_target
.to_files_info (target
);
4346 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4350 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4351 struct bp_target_info
*bp_tgt
)
4355 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4357 fprintf_unfiltered (gdb_stdlog
,
4358 "target_insert_breakpoint (%s, xxx) = %ld\n",
4359 core_addr_to_string (bp_tgt
->placed_address
),
4360 (unsigned long) retval
);
4365 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4366 struct bp_target_info
*bp_tgt
)
4370 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4372 fprintf_unfiltered (gdb_stdlog
,
4373 "target_remove_breakpoint (%s, xxx) = %ld\n",
4374 core_addr_to_string (bp_tgt
->placed_address
),
4375 (unsigned long) retval
);
4380 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4381 int type
, int cnt
, int from_tty
)
4385 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4386 type
, cnt
, from_tty
);
4388 fprintf_unfiltered (gdb_stdlog
,
4389 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4390 (unsigned long) type
,
4391 (unsigned long) cnt
,
4392 (unsigned long) from_tty
,
4393 (unsigned long) retval
);
4398 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4399 CORE_ADDR addr
, int len
)
4403 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4406 fprintf_unfiltered (gdb_stdlog
,
4407 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4408 core_addr_to_string (addr
), (unsigned long) len
,
4409 core_addr_to_string (retval
));
4414 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4415 CORE_ADDR addr
, int len
, int rw
,
4416 struct expression
*cond
)
4420 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4424 fprintf_unfiltered (gdb_stdlog
,
4425 "target_can_accel_watchpoint_condition "
4426 "(%s, %d, %d, %s) = %ld\n",
4427 core_addr_to_string (addr
), len
, rw
,
4428 host_address_to_string (cond
), (unsigned long) retval
);
4433 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4437 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4439 fprintf_unfiltered (gdb_stdlog
,
4440 "target_stopped_by_watchpoint () = %ld\n",
4441 (unsigned long) retval
);
4446 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4450 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4452 fprintf_unfiltered (gdb_stdlog
,
4453 "target_stopped_data_address ([%s]) = %ld\n",
4454 core_addr_to_string (*addr
),
4455 (unsigned long)retval
);
4460 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4462 CORE_ADDR start
, int length
)
4466 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4469 fprintf_filtered (gdb_stdlog
,
4470 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4471 core_addr_to_string (addr
), core_addr_to_string (start
),
4477 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4478 struct gdbarch
*gdbarch
,
4479 struct bp_target_info
*bp_tgt
)
4483 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4486 fprintf_unfiltered (gdb_stdlog
,
4487 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4488 core_addr_to_string (bp_tgt
->placed_address
),
4489 (unsigned long) retval
);
4494 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4495 struct gdbarch
*gdbarch
,
4496 struct bp_target_info
*bp_tgt
)
4500 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4503 fprintf_unfiltered (gdb_stdlog
,
4504 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4505 core_addr_to_string (bp_tgt
->placed_address
),
4506 (unsigned long) retval
);
4511 debug_to_insert_watchpoint (struct target_ops
*self
,
4512 CORE_ADDR addr
, int len
, int type
,
4513 struct expression
*cond
)
4517 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4518 addr
, len
, type
, cond
);
4520 fprintf_unfiltered (gdb_stdlog
,
4521 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4522 core_addr_to_string (addr
), len
, type
,
4523 host_address_to_string (cond
), (unsigned long) retval
);
4528 debug_to_remove_watchpoint (struct target_ops
*self
,
4529 CORE_ADDR addr
, int len
, int type
,
4530 struct expression
*cond
)
4534 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4535 addr
, len
, type
, cond
);
4537 fprintf_unfiltered (gdb_stdlog
,
4538 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4539 core_addr_to_string (addr
), len
, type
,
4540 host_address_to_string (cond
), (unsigned long) retval
);
4545 debug_to_terminal_init (struct target_ops
*self
)
4547 debug_target
.to_terminal_init (&debug_target
);
4549 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4553 debug_to_terminal_inferior (struct target_ops
*self
)
4555 debug_target
.to_terminal_inferior (&debug_target
);
4557 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4561 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4563 debug_target
.to_terminal_ours_for_output (&debug_target
);
4565 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4569 debug_to_terminal_ours (struct target_ops
*self
)
4571 debug_target
.to_terminal_ours (&debug_target
);
4573 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4577 debug_to_terminal_save_ours (struct target_ops
*self
)
4579 debug_target
.to_terminal_save_ours (&debug_target
);
4581 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4585 debug_to_terminal_info (struct target_ops
*self
,
4586 const char *arg
, int from_tty
)
4588 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4590 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4595 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4597 debug_target
.to_load (&debug_target
, args
, from_tty
);
4599 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4603 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4605 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4607 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4608 ptid_get_pid (ptid
));
4612 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4616 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4618 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4625 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4629 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4631 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4638 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4642 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4644 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4651 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4655 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4657 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4664 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4668 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4670 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4677 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4681 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4683 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4690 debug_to_has_exited (struct target_ops
*self
,
4691 int pid
, int wait_status
, int *exit_status
)
4695 has_exited
= debug_target
.to_has_exited (&debug_target
,
4696 pid
, wait_status
, exit_status
);
4698 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4699 pid
, wait_status
, *exit_status
, has_exited
);
4705 debug_to_can_run (struct target_ops
*self
)
4709 retval
= debug_target
.to_can_run (&debug_target
);
4711 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4716 static struct gdbarch
*
4717 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4719 struct gdbarch
*retval
;
4721 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4723 fprintf_unfiltered (gdb_stdlog
,
4724 "target_thread_architecture (%s) = %s [%s]\n",
4725 target_pid_to_str (ptid
),
4726 host_address_to_string (retval
),
4727 gdbarch_bfd_arch_info (retval
)->printable_name
);
4732 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4734 debug_target
.to_stop (&debug_target
, ptid
);
4736 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4737 target_pid_to_str (ptid
));
4741 debug_to_rcmd (struct target_ops
*self
, char *command
,
4742 struct ui_file
*outbuf
)
4744 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4745 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4749 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4753 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4755 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4762 setup_target_debug (void)
4764 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4766 current_target
.to_open
= debug_to_open
;
4767 current_target
.to_post_attach
= debug_to_post_attach
;
4768 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4769 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4770 current_target
.to_files_info
= debug_to_files_info
;
4771 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4772 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4773 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4774 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4775 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4776 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4777 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4778 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4779 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4780 current_target
.to_watchpoint_addr_within_range
4781 = debug_to_watchpoint_addr_within_range
;
4782 current_target
.to_region_ok_for_hw_watchpoint
4783 = debug_to_region_ok_for_hw_watchpoint
;
4784 current_target
.to_can_accel_watchpoint_condition
4785 = debug_to_can_accel_watchpoint_condition
;
4786 current_target
.to_terminal_init
= debug_to_terminal_init
;
4787 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4788 current_target
.to_terminal_ours_for_output
4789 = debug_to_terminal_ours_for_output
;
4790 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4791 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4792 current_target
.to_terminal_info
= debug_to_terminal_info
;
4793 current_target
.to_load
= debug_to_load
;
4794 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4795 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4796 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4797 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4798 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4799 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4800 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4801 current_target
.to_has_exited
= debug_to_has_exited
;
4802 current_target
.to_can_run
= debug_to_can_run
;
4803 current_target
.to_stop
= debug_to_stop
;
4804 current_target
.to_rcmd
= debug_to_rcmd
;
4805 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4806 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4810 static char targ_desc
[] =
4811 "Names of targets and files being debugged.\nShows the entire \
4812 stack of targets currently in use (including the exec-file,\n\
4813 core-file, and process, if any), as well as the symbol file name.";
4816 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4818 error (_("\"monitor\" command not supported by this target."));
4822 do_monitor_command (char *cmd
,
4825 target_rcmd (cmd
, gdb_stdtarg
);
4828 /* Print the name of each layers of our target stack. */
4831 maintenance_print_target_stack (char *cmd
, int from_tty
)
4833 struct target_ops
*t
;
4835 printf_filtered (_("The current target stack is:\n"));
4837 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4839 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4843 /* Controls if async mode is permitted. */
4844 int target_async_permitted
= 0;
4846 /* The set command writes to this variable. If the inferior is
4847 executing, target_async_permitted is *not* updated. */
4848 static int target_async_permitted_1
= 0;
4851 set_target_async_command (char *args
, int from_tty
,
4852 struct cmd_list_element
*c
)
4854 if (have_live_inferiors ())
4856 target_async_permitted_1
= target_async_permitted
;
4857 error (_("Cannot change this setting while the inferior is running."));
4860 target_async_permitted
= target_async_permitted_1
;
4864 show_target_async_command (struct ui_file
*file
, int from_tty
,
4865 struct cmd_list_element
*c
,
4868 fprintf_filtered (file
,
4869 _("Controlling the inferior in "
4870 "asynchronous mode is %s.\n"), value
);
4873 /* Temporary copies of permission settings. */
4875 static int may_write_registers_1
= 1;
4876 static int may_write_memory_1
= 1;
4877 static int may_insert_breakpoints_1
= 1;
4878 static int may_insert_tracepoints_1
= 1;
4879 static int may_insert_fast_tracepoints_1
= 1;
4880 static int may_stop_1
= 1;
4882 /* Make the user-set values match the real values again. */
4885 update_target_permissions (void)
4887 may_write_registers_1
= may_write_registers
;
4888 may_write_memory_1
= may_write_memory
;
4889 may_insert_breakpoints_1
= may_insert_breakpoints
;
4890 may_insert_tracepoints_1
= may_insert_tracepoints
;
4891 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4892 may_stop_1
= may_stop
;
4895 /* The one function handles (most of) the permission flags in the same
4899 set_target_permissions (char *args
, int from_tty
,
4900 struct cmd_list_element
*c
)
4902 if (target_has_execution
)
4904 update_target_permissions ();
4905 error (_("Cannot change this setting while the inferior is running."));
4908 /* Make the real values match the user-changed values. */
4909 may_write_registers
= may_write_registers_1
;
4910 may_insert_breakpoints
= may_insert_breakpoints_1
;
4911 may_insert_tracepoints
= may_insert_tracepoints_1
;
4912 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4913 may_stop
= may_stop_1
;
4914 update_observer_mode ();
4917 /* Set memory write permission independently of observer mode. */
4920 set_write_memory_permission (char *args
, int from_tty
,
4921 struct cmd_list_element
*c
)
4923 /* Make the real values match the user-changed values. */
4924 may_write_memory
= may_write_memory_1
;
4925 update_observer_mode ();
4930 initialize_targets (void)
4932 init_dummy_target ();
4933 push_target (&dummy_target
);
4935 add_info ("target", target_info
, targ_desc
);
4936 add_info ("files", target_info
, targ_desc
);
4938 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
4939 Set target debugging."), _("\
4940 Show target debugging."), _("\
4941 When non-zero, target debugging is enabled. Higher numbers are more\n\
4942 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4946 &setdebuglist
, &showdebuglist
);
4948 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
4949 &trust_readonly
, _("\
4950 Set mode for reading from readonly sections."), _("\
4951 Show mode for reading from readonly sections."), _("\
4952 When this mode is on, memory reads from readonly sections (such as .text)\n\
4953 will be read from the object file instead of from the target. This will\n\
4954 result in significant performance improvement for remote targets."),
4956 show_trust_readonly
,
4957 &setlist
, &showlist
);
4959 add_com ("monitor", class_obscure
, do_monitor_command
,
4960 _("Send a command to the remote monitor (remote targets only)."));
4962 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
4963 _("Print the name of each layer of the internal target stack."),
4964 &maintenanceprintlist
);
4966 add_setshow_boolean_cmd ("target-async", no_class
,
4967 &target_async_permitted_1
, _("\
4968 Set whether gdb controls the inferior in asynchronous mode."), _("\
4969 Show whether gdb controls the inferior in asynchronous mode."), _("\
4970 Tells gdb whether to control the inferior in asynchronous mode."),
4971 set_target_async_command
,
4972 show_target_async_command
,
4976 add_setshow_boolean_cmd ("may-write-registers", class_support
,
4977 &may_write_registers_1
, _("\
4978 Set permission to write into registers."), _("\
4979 Show permission to write into registers."), _("\
4980 When this permission is on, GDB may write into the target's registers.\n\
4981 Otherwise, any sort of write attempt will result in an error."),
4982 set_target_permissions
, NULL
,
4983 &setlist
, &showlist
);
4985 add_setshow_boolean_cmd ("may-write-memory", class_support
,
4986 &may_write_memory_1
, _("\
4987 Set permission to write into target memory."), _("\
4988 Show permission to write into target memory."), _("\
4989 When this permission is on, GDB may write into the target's memory.\n\
4990 Otherwise, any sort of write attempt will result in an error."),
4991 set_write_memory_permission
, NULL
,
4992 &setlist
, &showlist
);
4994 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
4995 &may_insert_breakpoints_1
, _("\
4996 Set permission to insert breakpoints in the target."), _("\
4997 Show permission to insert breakpoints in the target."), _("\
4998 When this permission is on, GDB may insert breakpoints in the program.\n\
4999 Otherwise, any sort of insertion attempt will result in an error."),
5000 set_target_permissions
, NULL
,
5001 &setlist
, &showlist
);
5003 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5004 &may_insert_tracepoints_1
, _("\
5005 Set permission to insert tracepoints in the target."), _("\
5006 Show permission to insert tracepoints in the target."), _("\
5007 When this permission is on, GDB may insert tracepoints in the program.\n\
5008 Otherwise, any sort of insertion attempt will result in an error."),
5009 set_target_permissions
, NULL
,
5010 &setlist
, &showlist
);
5012 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5013 &may_insert_fast_tracepoints_1
, _("\
5014 Set permission to insert fast tracepoints in the target."), _("\
5015 Show permission to insert fast tracepoints in the target."), _("\
5016 When this permission is on, GDB may insert fast tracepoints.\n\
5017 Otherwise, any sort of insertion attempt will result in an error."),
5018 set_target_permissions
, NULL
,
5019 &setlist
, &showlist
);
5021 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5023 Set permission to interrupt or signal the target."), _("\
5024 Show permission to interrupt or signal the target."), _("\
5025 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5026 Otherwise, any attempt to interrupt or stop will be ignored."),
5027 set_target_permissions
, NULL
,
5028 &setlist
, &showlist
);