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
);
719 to_supports_evaluation_of_breakpoint_conditions. */
720 INHERIT (to_can_run_breakpoint_commands
, t
);
721 /* Do not inherit to_memory_map. */
722 /* Do not inherit to_flash_erase. */
723 /* Do not inherit to_flash_done. */
727 /* Clean up a target struct so it no longer has any zero pointers in
728 it. Some entries are defaulted to a method that print an error,
729 others are hard-wired to a standard recursive default. */
731 #define de_fault(field, value) \
732 if (!current_target.field) \
733 current_target.field = value
736 (void (*) (char *, int))
739 (void (*) (struct target_ops
*))
741 de_fault (deprecated_xfer_memory
,
742 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
743 struct mem_attrib
*, struct target_ops
*))
745 de_fault (to_can_run
,
746 (int (*) (struct target_ops
*))
749 (void (*) (struct target_ops
*, ptid_t
))
751 current_target
.to_read_description
= NULL
;
752 de_fault (to_can_run_breakpoint_commands
,
753 (int (*) (struct target_ops
*))
758 /* Finally, position the target-stack beneath the squashed
759 "current_target". That way code looking for a non-inherited
760 target method can quickly and simply find it. */
761 current_target
.beneath
= target_stack
;
764 setup_target_debug ();
767 /* Push a new target type into the stack of the existing target accessors,
768 possibly superseding some of the existing accessors.
770 Rather than allow an empty stack, we always have the dummy target at
771 the bottom stratum, so we can call the function vectors without
775 push_target (struct target_ops
*t
)
777 struct target_ops
**cur
;
779 /* Check magic number. If wrong, it probably means someone changed
780 the struct definition, but not all the places that initialize one. */
781 if (t
->to_magic
!= OPS_MAGIC
)
783 fprintf_unfiltered (gdb_stderr
,
784 "Magic number of %s target struct wrong\n",
786 internal_error (__FILE__
, __LINE__
,
787 _("failed internal consistency check"));
790 /* Find the proper stratum to install this target in. */
791 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
793 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
797 /* If there's already targets at this stratum, remove them. */
798 /* FIXME: cagney/2003-10-15: I think this should be popping all
799 targets to CUR, and not just those at this stratum level. */
800 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
802 /* There's already something at this stratum level. Close it,
803 and un-hook it from the stack. */
804 struct target_ops
*tmp
= (*cur
);
806 (*cur
) = (*cur
)->beneath
;
811 /* We have removed all targets in our stratum, now add the new one. */
815 update_current_target ();
818 /* Remove a target_ops vector from the stack, wherever it may be.
819 Return how many times it was removed (0 or 1). */
822 unpush_target (struct target_ops
*t
)
824 struct target_ops
**cur
;
825 struct target_ops
*tmp
;
827 if (t
->to_stratum
== dummy_stratum
)
828 internal_error (__FILE__
, __LINE__
,
829 _("Attempt to unpush the dummy target"));
831 /* Look for the specified target. Note that we assume that a target
832 can only occur once in the target stack. */
834 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
840 /* If we don't find target_ops, quit. Only open targets should be
845 /* Unchain the target. */
847 (*cur
) = (*cur
)->beneath
;
850 update_current_target ();
852 /* Finally close the target. Note we do this after unchaining, so
853 any target method calls from within the target_close
854 implementation don't end up in T anymore. */
861 pop_all_targets_above (enum strata above_stratum
)
863 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
865 if (!unpush_target (target_stack
))
867 fprintf_unfiltered (gdb_stderr
,
868 "pop_all_targets couldn't find target %s\n",
869 target_stack
->to_shortname
);
870 internal_error (__FILE__
, __LINE__
,
871 _("failed internal consistency check"));
878 pop_all_targets (void)
880 pop_all_targets_above (dummy_stratum
);
883 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
886 target_is_pushed (struct target_ops
*t
)
888 struct target_ops
**cur
;
890 /* Check magic number. If wrong, it probably means someone changed
891 the struct definition, but not all the places that initialize one. */
892 if (t
->to_magic
!= OPS_MAGIC
)
894 fprintf_unfiltered (gdb_stderr
,
895 "Magic number of %s target struct wrong\n",
897 internal_error (__FILE__
, __LINE__
,
898 _("failed internal consistency check"));
901 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
908 /* Using the objfile specified in OBJFILE, find the address for the
909 current thread's thread-local storage with offset OFFSET. */
911 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
913 volatile CORE_ADDR addr
= 0;
914 struct target_ops
*target
;
916 for (target
= current_target
.beneath
;
918 target
= target
->beneath
)
920 if (target
->to_get_thread_local_address
!= NULL
)
925 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
927 ptid_t ptid
= inferior_ptid
;
928 volatile struct gdb_exception ex
;
930 TRY_CATCH (ex
, RETURN_MASK_ALL
)
934 /* Fetch the load module address for this objfile. */
935 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
937 /* If it's 0, throw the appropriate exception. */
939 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
940 _("TLS load module not found"));
942 addr
= target
->to_get_thread_local_address (target
, ptid
,
945 /* If an error occurred, print TLS related messages here. Otherwise,
946 throw the error to some higher catcher. */
949 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
953 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
954 error (_("Cannot find thread-local variables "
955 "in this thread library."));
957 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
958 if (objfile_is_library
)
959 error (_("Cannot find shared library `%s' in dynamic"
960 " linker's load module list"), objfile_name (objfile
));
962 error (_("Cannot find executable file `%s' in dynamic"
963 " linker's load module list"), objfile_name (objfile
));
965 case TLS_NOT_ALLOCATED_YET_ERROR
:
966 if (objfile_is_library
)
967 error (_("The inferior has not yet allocated storage for"
968 " thread-local variables in\n"
969 "the shared library `%s'\n"
971 objfile_name (objfile
), target_pid_to_str (ptid
));
973 error (_("The inferior has not yet allocated storage for"
974 " thread-local variables in\n"
975 "the executable `%s'\n"
977 objfile_name (objfile
), target_pid_to_str (ptid
));
979 case TLS_GENERIC_ERROR
:
980 if (objfile_is_library
)
981 error (_("Cannot find thread-local storage for %s, "
982 "shared library %s:\n%s"),
983 target_pid_to_str (ptid
),
984 objfile_name (objfile
), ex
.message
);
986 error (_("Cannot find thread-local storage for %s, "
987 "executable file %s:\n%s"),
988 target_pid_to_str (ptid
),
989 objfile_name (objfile
), ex
.message
);
992 throw_exception (ex
);
997 /* It wouldn't be wrong here to try a gdbarch method, too; finding
998 TLS is an ABI-specific thing. But we don't do that yet. */
1000 error (_("Cannot find thread-local variables on this target"));
1006 target_xfer_status_to_string (enum target_xfer_status err
)
1008 #define CASE(X) case X: return #X
1011 CASE(TARGET_XFER_E_IO
);
1012 CASE(TARGET_XFER_E_UNAVAILABLE
);
1021 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1023 /* target_read_string -- read a null terminated string, up to LEN bytes,
1024 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1025 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1026 is responsible for freeing it. Return the number of bytes successfully
1030 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1032 int tlen
, offset
, i
;
1036 int buffer_allocated
;
1038 unsigned int nbytes_read
= 0;
1040 gdb_assert (string
);
1042 /* Small for testing. */
1043 buffer_allocated
= 4;
1044 buffer
= xmalloc (buffer_allocated
);
1049 tlen
= MIN (len
, 4 - (memaddr
& 3));
1050 offset
= memaddr
& 3;
1052 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1055 /* The transfer request might have crossed the boundary to an
1056 unallocated region of memory. Retry the transfer, requesting
1060 errcode
= target_read_memory (memaddr
, buf
, 1);
1065 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1069 bytes
= bufptr
- buffer
;
1070 buffer_allocated
*= 2;
1071 buffer
= xrealloc (buffer
, buffer_allocated
);
1072 bufptr
= buffer
+ bytes
;
1075 for (i
= 0; i
< tlen
; i
++)
1077 *bufptr
++ = buf
[i
+ offset
];
1078 if (buf
[i
+ offset
] == '\000')
1080 nbytes_read
+= i
+ 1;
1087 nbytes_read
+= tlen
;
1096 struct target_section_table
*
1097 target_get_section_table (struct target_ops
*target
)
1099 struct target_ops
*t
;
1102 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1104 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1105 if (t
->to_get_section_table
!= NULL
)
1106 return (*t
->to_get_section_table
) (t
);
1111 /* Find a section containing ADDR. */
1113 struct target_section
*
1114 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1116 struct target_section_table
*table
= target_get_section_table (target
);
1117 struct target_section
*secp
;
1122 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1124 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1130 /* Read memory from the live target, even if currently inspecting a
1131 traceframe. The return is the same as that of target_read. */
1133 static enum target_xfer_status
1134 target_read_live_memory (enum target_object object
,
1135 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1136 ULONGEST
*xfered_len
)
1138 enum target_xfer_status ret
;
1139 struct cleanup
*cleanup
;
1141 /* Switch momentarily out of tfind mode so to access live memory.
1142 Note that this must not clear global state, such as the frame
1143 cache, which must still remain valid for the previous traceframe.
1144 We may be _building_ the frame cache at this point. */
1145 cleanup
= make_cleanup_restore_traceframe_number ();
1146 set_traceframe_number (-1);
1148 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1149 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1151 do_cleanups (cleanup
);
1155 /* Using the set of read-only target sections of OPS, read live
1156 read-only memory. Note that the actual reads start from the
1157 top-most target again.
1159 For interface/parameters/return description see target.h,
1162 static enum target_xfer_status
1163 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1164 enum target_object object
,
1165 gdb_byte
*readbuf
, ULONGEST memaddr
,
1166 ULONGEST len
, ULONGEST
*xfered_len
)
1168 struct target_section
*secp
;
1169 struct target_section_table
*table
;
1171 secp
= target_section_by_addr (ops
, memaddr
);
1173 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1174 secp
->the_bfd_section
)
1177 struct target_section
*p
;
1178 ULONGEST memend
= memaddr
+ len
;
1180 table
= target_get_section_table (ops
);
1182 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1184 if (memaddr
>= p
->addr
)
1186 if (memend
<= p
->endaddr
)
1188 /* Entire transfer is within this section. */
1189 return target_read_live_memory (object
, memaddr
,
1190 readbuf
, len
, xfered_len
);
1192 else if (memaddr
>= p
->endaddr
)
1194 /* This section ends before the transfer starts. */
1199 /* This section overlaps the transfer. Just do half. */
1200 len
= p
->endaddr
- memaddr
;
1201 return target_read_live_memory (object
, memaddr
,
1202 readbuf
, len
, xfered_len
);
1208 return TARGET_XFER_EOF
;
1211 /* Read memory from more than one valid target. A core file, for
1212 instance, could have some of memory but delegate other bits to
1213 the target below it. So, we must manually try all targets. */
1215 static enum target_xfer_status
1216 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1217 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1218 ULONGEST
*xfered_len
)
1220 enum target_xfer_status res
;
1224 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1225 readbuf
, writebuf
, memaddr
, len
,
1227 if (res
== TARGET_XFER_OK
)
1230 /* Stop if the target reports that the memory is not available. */
1231 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1234 /* We want to continue past core files to executables, but not
1235 past a running target's memory. */
1236 if (ops
->to_has_all_memory (ops
))
1241 while (ops
!= NULL
);
1246 /* Perform a partial memory transfer.
1247 For docs see target.h, to_xfer_partial. */
1249 static enum target_xfer_status
1250 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1251 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1252 ULONGEST len
, ULONGEST
*xfered_len
)
1254 enum target_xfer_status res
;
1256 struct mem_region
*region
;
1257 struct inferior
*inf
;
1259 /* For accesses to unmapped overlay sections, read directly from
1260 files. Must do this first, as MEMADDR may need adjustment. */
1261 if (readbuf
!= NULL
&& overlay_debugging
)
1263 struct obj_section
*section
= find_pc_overlay (memaddr
);
1265 if (pc_in_unmapped_range (memaddr
, section
))
1267 struct target_section_table
*table
1268 = target_get_section_table (ops
);
1269 const char *section_name
= section
->the_bfd_section
->name
;
1271 memaddr
= overlay_mapped_address (memaddr
, section
);
1272 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1273 memaddr
, len
, xfered_len
,
1275 table
->sections_end
,
1280 /* Try the executable files, if "trust-readonly-sections" is set. */
1281 if (readbuf
!= NULL
&& trust_readonly
)
1283 struct target_section
*secp
;
1284 struct target_section_table
*table
;
1286 secp
= target_section_by_addr (ops
, memaddr
);
1288 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1289 secp
->the_bfd_section
)
1292 table
= target_get_section_table (ops
);
1293 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1294 memaddr
, len
, xfered_len
,
1296 table
->sections_end
,
1301 /* If reading unavailable memory in the context of traceframes, and
1302 this address falls within a read-only section, fallback to
1303 reading from live memory. */
1304 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1306 VEC(mem_range_s
) *available
;
1308 /* If we fail to get the set of available memory, then the
1309 target does not support querying traceframe info, and so we
1310 attempt reading from the traceframe anyway (assuming the
1311 target implements the old QTro packet then). */
1312 if (traceframe_available_memory (&available
, memaddr
, len
))
1314 struct cleanup
*old_chain
;
1316 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1318 if (VEC_empty (mem_range_s
, available
)
1319 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1321 /* Don't read into the traceframe's available
1323 if (!VEC_empty (mem_range_s
, available
))
1325 LONGEST oldlen
= len
;
1327 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1328 gdb_assert (len
<= oldlen
);
1331 do_cleanups (old_chain
);
1333 /* This goes through the topmost target again. */
1334 res
= memory_xfer_live_readonly_partial (ops
, object
,
1337 if (res
== TARGET_XFER_OK
)
1338 return TARGET_XFER_OK
;
1341 /* No use trying further, we know some memory starting
1342 at MEMADDR isn't available. */
1344 return TARGET_XFER_E_UNAVAILABLE
;
1348 /* Don't try to read more than how much is available, in
1349 case the target implements the deprecated QTro packet to
1350 cater for older GDBs (the target's knowledge of read-only
1351 sections may be outdated by now). */
1352 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1354 do_cleanups (old_chain
);
1358 /* Try GDB's internal data cache. */
1359 region
= lookup_mem_region (memaddr
);
1360 /* region->hi == 0 means there's no upper bound. */
1361 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1364 reg_len
= region
->hi
- memaddr
;
1366 switch (region
->attrib
.mode
)
1369 if (writebuf
!= NULL
)
1370 return TARGET_XFER_E_IO
;
1374 if (readbuf
!= NULL
)
1375 return TARGET_XFER_E_IO
;
1379 /* We only support writing to flash during "load" for now. */
1380 if (writebuf
!= NULL
)
1381 error (_("Writing to flash memory forbidden in this context"));
1385 return TARGET_XFER_E_IO
;
1388 if (!ptid_equal (inferior_ptid
, null_ptid
))
1389 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1394 /* The dcache reads whole cache lines; that doesn't play well
1395 with reading from a trace buffer, because reading outside of
1396 the collected memory range fails. */
1397 && get_traceframe_number () == -1
1398 && (region
->attrib
.cache
1399 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1400 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1402 DCACHE
*dcache
= target_dcache_get_or_init ();
1405 if (readbuf
!= NULL
)
1406 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1408 /* FIXME drow/2006-08-09: If we're going to preserve const
1409 correctness dcache_xfer_memory should take readbuf and
1411 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1414 return TARGET_XFER_E_IO
;
1417 *xfered_len
= (ULONGEST
) l
;
1418 return TARGET_XFER_OK
;
1422 /* If none of those methods found the memory we wanted, fall back
1423 to a target partial transfer. Normally a single call to
1424 to_xfer_partial is enough; if it doesn't recognize an object
1425 it will call the to_xfer_partial of the next target down.
1426 But for memory this won't do. Memory is the only target
1427 object which can be read from more than one valid target.
1428 A core file, for instance, could have some of memory but
1429 delegate other bits to the target below it. So, we must
1430 manually try all targets. */
1432 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1435 /* Make sure the cache gets updated no matter what - if we are writing
1436 to the stack. Even if this write is not tagged as such, we still need
1437 to update the cache. */
1439 if (res
== TARGET_XFER_OK
1442 && target_dcache_init_p ()
1443 && !region
->attrib
.cache
1444 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1445 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1447 DCACHE
*dcache
= target_dcache_get ();
1449 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1452 /* If we still haven't got anything, return the last error. We
1457 /* Perform a partial memory transfer. For docs see target.h,
1460 static enum target_xfer_status
1461 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1462 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1463 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1465 enum target_xfer_status res
;
1467 /* Zero length requests are ok and require no work. */
1469 return TARGET_XFER_EOF
;
1471 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1472 breakpoint insns, thus hiding out from higher layers whether
1473 there are software breakpoints inserted in the code stream. */
1474 if (readbuf
!= NULL
)
1476 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1479 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1480 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1485 struct cleanup
*old_chain
;
1487 /* A large write request is likely to be partially satisfied
1488 by memory_xfer_partial_1. We will continually malloc
1489 and free a copy of the entire write request for breakpoint
1490 shadow handling even though we only end up writing a small
1491 subset of it. Cap writes to 4KB to mitigate this. */
1492 len
= min (4096, len
);
1494 buf
= xmalloc (len
);
1495 old_chain
= make_cleanup (xfree
, buf
);
1496 memcpy (buf
, writebuf
, len
);
1498 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1499 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1502 do_cleanups (old_chain
);
1509 restore_show_memory_breakpoints (void *arg
)
1511 show_memory_breakpoints
= (uintptr_t) arg
;
1515 make_show_memory_breakpoints_cleanup (int show
)
1517 int current
= show_memory_breakpoints
;
1519 show_memory_breakpoints
= show
;
1520 return make_cleanup (restore_show_memory_breakpoints
,
1521 (void *) (uintptr_t) current
);
1524 /* For docs see target.h, to_xfer_partial. */
1526 enum target_xfer_status
1527 target_xfer_partial (struct target_ops
*ops
,
1528 enum target_object object
, const char *annex
,
1529 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1530 ULONGEST offset
, ULONGEST len
,
1531 ULONGEST
*xfered_len
)
1533 enum target_xfer_status retval
;
1535 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1537 /* Transfer is done when LEN is zero. */
1539 return TARGET_XFER_EOF
;
1541 if (writebuf
&& !may_write_memory
)
1542 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1543 core_addr_to_string_nz (offset
), plongest (len
));
1547 /* If this is a memory transfer, let the memory-specific code
1548 have a look at it instead. Memory transfers are more
1550 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1551 || object
== TARGET_OBJECT_CODE_MEMORY
)
1552 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1553 writebuf
, offset
, len
, xfered_len
);
1554 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1556 /* Request the normal memory object from other layers. */
1557 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1561 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1562 writebuf
, offset
, len
, xfered_len
);
1566 const unsigned char *myaddr
= NULL
;
1568 fprintf_unfiltered (gdb_stdlog
,
1569 "%s:target_xfer_partial "
1570 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1573 (annex
? annex
: "(null)"),
1574 host_address_to_string (readbuf
),
1575 host_address_to_string (writebuf
),
1576 core_addr_to_string_nz (offset
),
1577 pulongest (len
), retval
,
1578 pulongest (*xfered_len
));
1584 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1588 fputs_unfiltered (", bytes =", gdb_stdlog
);
1589 for (i
= 0; i
< *xfered_len
; i
++)
1591 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1593 if (targetdebug
< 2 && i
> 0)
1595 fprintf_unfiltered (gdb_stdlog
, " ...");
1598 fprintf_unfiltered (gdb_stdlog
, "\n");
1601 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1605 fputc_unfiltered ('\n', gdb_stdlog
);
1608 /* Check implementations of to_xfer_partial update *XFERED_LEN
1609 properly. Do assertion after printing debug messages, so that we
1610 can find more clues on assertion failure from debugging messages. */
1611 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1612 gdb_assert (*xfered_len
> 0);
1617 /* Read LEN bytes of target memory at address MEMADDR, placing the
1618 results in GDB's memory at MYADDR. Returns either 0 for success or
1619 TARGET_XFER_E_IO if any error occurs.
1621 If an error occurs, no guarantee is made about the contents of the data at
1622 MYADDR. In particular, the caller should not depend upon partial reads
1623 filling the buffer with good data. There is no way for the caller to know
1624 how much good data might have been transfered anyway. Callers that can
1625 deal with partial reads should call target_read (which will retry until
1626 it makes no progress, and then return how much was transferred). */
1629 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1631 /* Dispatch to the topmost target, not the flattened current_target.
1632 Memory accesses check target->to_has_(all_)memory, and the
1633 flattened target doesn't inherit those. */
1634 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1635 myaddr
, memaddr
, len
) == len
)
1638 return TARGET_XFER_E_IO
;
1641 /* Like target_read_memory, but specify explicitly that this is a read
1642 from the target's raw memory. That is, this read bypasses the
1643 dcache, breakpoint shadowing, etc. */
1646 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1648 /* See comment in target_read_memory about why the request starts at
1649 current_target.beneath. */
1650 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1651 myaddr
, memaddr
, len
) == len
)
1654 return TARGET_XFER_E_IO
;
1657 /* Like target_read_memory, but specify explicitly that this is a read from
1658 the target's stack. This may trigger different cache behavior. */
1661 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1663 /* See comment in target_read_memory about why the request starts at
1664 current_target.beneath. */
1665 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1666 myaddr
, memaddr
, len
) == len
)
1669 return TARGET_XFER_E_IO
;
1672 /* Like target_read_memory, but specify explicitly that this is a read from
1673 the target's code. This may trigger different cache behavior. */
1676 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1678 /* See comment in target_read_memory about why the request starts at
1679 current_target.beneath. */
1680 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1681 myaddr
, memaddr
, len
) == len
)
1684 return TARGET_XFER_E_IO
;
1687 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1688 Returns either 0 for success or TARGET_XFER_E_IO if any
1689 error occurs. If an error occurs, no guarantee is made about how
1690 much data got written. Callers that can deal with partial writes
1691 should call target_write. */
1694 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1696 /* See comment in target_read_memory about why the request starts at
1697 current_target.beneath. */
1698 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1699 myaddr
, memaddr
, len
) == len
)
1702 return TARGET_XFER_E_IO
;
1705 /* Write LEN bytes from MYADDR to target raw memory at address
1706 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1707 if any error occurs. If an error occurs, no guarantee is made
1708 about how much data got written. Callers that can deal with
1709 partial writes should call target_write. */
1712 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1714 /* See comment in target_read_memory about why the request starts at
1715 current_target.beneath. */
1716 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1717 myaddr
, memaddr
, len
) == len
)
1720 return TARGET_XFER_E_IO
;
1723 /* Fetch the target's memory map. */
1726 target_memory_map (void)
1728 VEC(mem_region_s
) *result
;
1729 struct mem_region
*last_one
, *this_one
;
1731 struct target_ops
*t
;
1734 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1736 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1737 if (t
->to_memory_map
!= NULL
)
1743 result
= t
->to_memory_map (t
);
1747 qsort (VEC_address (mem_region_s
, result
),
1748 VEC_length (mem_region_s
, result
),
1749 sizeof (struct mem_region
), mem_region_cmp
);
1751 /* Check that regions do not overlap. Simultaneously assign
1752 a numbering for the "mem" commands to use to refer to
1755 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1757 this_one
->number
= ix
;
1759 if (last_one
&& last_one
->hi
> this_one
->lo
)
1761 warning (_("Overlapping regions in memory map: ignoring"));
1762 VEC_free (mem_region_s
, result
);
1765 last_one
= this_one
;
1772 target_flash_erase (ULONGEST address
, LONGEST length
)
1774 struct target_ops
*t
;
1776 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1777 if (t
->to_flash_erase
!= NULL
)
1780 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1781 hex_string (address
), phex (length
, 0));
1782 t
->to_flash_erase (t
, address
, length
);
1790 target_flash_done (void)
1792 struct target_ops
*t
;
1794 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1795 if (t
->to_flash_done
!= NULL
)
1798 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1799 t
->to_flash_done (t
);
1807 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1808 struct cmd_list_element
*c
, const char *value
)
1810 fprintf_filtered (file
,
1811 _("Mode for reading from readonly sections is %s.\n"),
1815 /* More generic transfers. */
1817 static enum target_xfer_status
1818 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1819 const char *annex
, gdb_byte
*readbuf
,
1820 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1821 ULONGEST
*xfered_len
)
1823 if (object
== TARGET_OBJECT_MEMORY
1824 && ops
->deprecated_xfer_memory
!= NULL
)
1825 /* If available, fall back to the target's
1826 "deprecated_xfer_memory" method. */
1831 if (writebuf
!= NULL
)
1833 void *buffer
= xmalloc (len
);
1834 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1836 memcpy (buffer
, writebuf
, len
);
1837 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1838 1/*write*/, NULL
, ops
);
1839 do_cleanups (cleanup
);
1841 if (readbuf
!= NULL
)
1842 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1843 0/*read*/, NULL
, ops
);
1846 *xfered_len
= (ULONGEST
) xfered
;
1847 return TARGET_XFER_E_IO
;
1849 else if (xfered
== 0 && errno
== 0)
1850 /* "deprecated_xfer_memory" uses 0, cross checked against
1851 ERRNO as one indication of an error. */
1852 return TARGET_XFER_EOF
;
1854 return TARGET_XFER_E_IO
;
1858 gdb_assert (ops
->beneath
!= NULL
);
1859 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1860 readbuf
, writebuf
, offset
, len
,
1865 /* Target vector read/write partial wrapper functions. */
1867 static enum target_xfer_status
1868 target_read_partial (struct target_ops
*ops
,
1869 enum target_object object
,
1870 const char *annex
, gdb_byte
*buf
,
1871 ULONGEST offset
, ULONGEST len
,
1872 ULONGEST
*xfered_len
)
1874 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
1878 static enum target_xfer_status
1879 target_write_partial (struct target_ops
*ops
,
1880 enum target_object object
,
1881 const char *annex
, const gdb_byte
*buf
,
1882 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
1884 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
1888 /* Wrappers to perform the full transfer. */
1890 /* For docs on target_read see target.h. */
1893 target_read (struct target_ops
*ops
,
1894 enum target_object object
,
1895 const char *annex
, gdb_byte
*buf
,
1896 ULONGEST offset
, LONGEST len
)
1900 while (xfered
< len
)
1902 ULONGEST xfered_len
;
1903 enum target_xfer_status status
;
1905 status
= target_read_partial (ops
, object
, annex
,
1906 (gdb_byte
*) buf
+ xfered
,
1907 offset
+ xfered
, len
- xfered
,
1910 /* Call an observer, notifying them of the xfer progress? */
1911 if (status
== TARGET_XFER_EOF
)
1913 else if (status
== TARGET_XFER_OK
)
1915 xfered
+= xfered_len
;
1925 /* Assuming that the entire [begin, end) range of memory cannot be
1926 read, try to read whatever subrange is possible to read.
1928 The function returns, in RESULT, either zero or one memory block.
1929 If there's a readable subrange at the beginning, it is completely
1930 read and returned. Any further readable subrange will not be read.
1931 Otherwise, if there's a readable subrange at the end, it will be
1932 completely read and returned. Any readable subranges before it
1933 (obviously, not starting at the beginning), will be ignored. In
1934 other cases -- either no readable subrange, or readable subrange(s)
1935 that is neither at the beginning, or end, nothing is returned.
1937 The purpose of this function is to handle a read across a boundary
1938 of accessible memory in a case when memory map is not available.
1939 The above restrictions are fine for this case, but will give
1940 incorrect results if the memory is 'patchy'. However, supporting
1941 'patchy' memory would require trying to read every single byte,
1942 and it seems unacceptable solution. Explicit memory map is
1943 recommended for this case -- and target_read_memory_robust will
1944 take care of reading multiple ranges then. */
1947 read_whatever_is_readable (struct target_ops
*ops
,
1948 ULONGEST begin
, ULONGEST end
,
1949 VEC(memory_read_result_s
) **result
)
1951 gdb_byte
*buf
= xmalloc (end
- begin
);
1952 ULONGEST current_begin
= begin
;
1953 ULONGEST current_end
= end
;
1955 memory_read_result_s r
;
1956 ULONGEST xfered_len
;
1958 /* If we previously failed to read 1 byte, nothing can be done here. */
1959 if (end
- begin
<= 1)
1965 /* Check that either first or the last byte is readable, and give up
1966 if not. This heuristic is meant to permit reading accessible memory
1967 at the boundary of accessible region. */
1968 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1969 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
1974 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1975 buf
+ (end
-begin
) - 1, end
- 1, 1,
1976 &xfered_len
) == TARGET_XFER_OK
)
1987 /* Loop invariant is that the [current_begin, current_end) was previously
1988 found to be not readable as a whole.
1990 Note loop condition -- if the range has 1 byte, we can't divide the range
1991 so there's no point trying further. */
1992 while (current_end
- current_begin
> 1)
1994 ULONGEST first_half_begin
, first_half_end
;
1995 ULONGEST second_half_begin
, second_half_end
;
1997 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2001 first_half_begin
= current_begin
;
2002 first_half_end
= middle
;
2003 second_half_begin
= middle
;
2004 second_half_end
= current_end
;
2008 first_half_begin
= middle
;
2009 first_half_end
= current_end
;
2010 second_half_begin
= current_begin
;
2011 second_half_end
= middle
;
2014 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2015 buf
+ (first_half_begin
- begin
),
2017 first_half_end
- first_half_begin
);
2019 if (xfer
== first_half_end
- first_half_begin
)
2021 /* This half reads up fine. So, the error must be in the
2023 current_begin
= second_half_begin
;
2024 current_end
= second_half_end
;
2028 /* This half is not readable. Because we've tried one byte, we
2029 know some part of this half if actually redable. Go to the next
2030 iteration to divide again and try to read.
2032 We don't handle the other half, because this function only tries
2033 to read a single readable subrange. */
2034 current_begin
= first_half_begin
;
2035 current_end
= first_half_end
;
2041 /* The [begin, current_begin) range has been read. */
2043 r
.end
= current_begin
;
2048 /* The [current_end, end) range has been read. */
2049 LONGEST rlen
= end
- current_end
;
2051 r
.data
= xmalloc (rlen
);
2052 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2053 r
.begin
= current_end
;
2057 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2061 free_memory_read_result_vector (void *x
)
2063 VEC(memory_read_result_s
) *v
= x
;
2064 memory_read_result_s
*current
;
2067 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2069 xfree (current
->data
);
2071 VEC_free (memory_read_result_s
, v
);
2074 VEC(memory_read_result_s
) *
2075 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2077 VEC(memory_read_result_s
) *result
= 0;
2080 while (xfered
< len
)
2082 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2085 /* If there is no explicit region, a fake one should be created. */
2086 gdb_assert (region
);
2088 if (region
->hi
== 0)
2089 rlen
= len
- xfered
;
2091 rlen
= region
->hi
- offset
;
2093 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2095 /* Cannot read this region. Note that we can end up here only
2096 if the region is explicitly marked inaccessible, or
2097 'inaccessible-by-default' is in effect. */
2102 LONGEST to_read
= min (len
- xfered
, rlen
);
2103 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2105 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2106 (gdb_byte
*) buffer
,
2107 offset
+ xfered
, to_read
);
2108 /* Call an observer, notifying them of the xfer progress? */
2111 /* Got an error reading full chunk. See if maybe we can read
2114 read_whatever_is_readable (ops
, offset
+ xfered
,
2115 offset
+ xfered
+ to_read
, &result
);
2120 struct memory_read_result r
;
2122 r
.begin
= offset
+ xfered
;
2123 r
.end
= r
.begin
+ xfer
;
2124 VEC_safe_push (memory_read_result_s
, result
, &r
);
2134 /* An alternative to target_write with progress callbacks. */
2137 target_write_with_progress (struct target_ops
*ops
,
2138 enum target_object object
,
2139 const char *annex
, const gdb_byte
*buf
,
2140 ULONGEST offset
, LONGEST len
,
2141 void (*progress
) (ULONGEST
, void *), void *baton
)
2145 /* Give the progress callback a chance to set up. */
2147 (*progress
) (0, baton
);
2149 while (xfered
< len
)
2151 ULONGEST xfered_len
;
2152 enum target_xfer_status status
;
2154 status
= target_write_partial (ops
, object
, annex
,
2155 (gdb_byte
*) buf
+ xfered
,
2156 offset
+ xfered
, len
- xfered
,
2159 if (status
== TARGET_XFER_EOF
)
2161 if (TARGET_XFER_STATUS_ERROR_P (status
))
2164 gdb_assert (status
== TARGET_XFER_OK
);
2166 (*progress
) (xfered_len
, baton
);
2168 xfered
+= xfered_len
;
2174 /* For docs on target_write see target.h. */
2177 target_write (struct target_ops
*ops
,
2178 enum target_object object
,
2179 const char *annex
, const gdb_byte
*buf
,
2180 ULONGEST offset
, LONGEST len
)
2182 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2186 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2187 the size of the transferred data. PADDING additional bytes are
2188 available in *BUF_P. This is a helper function for
2189 target_read_alloc; see the declaration of that function for more
2193 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2194 const char *annex
, gdb_byte
**buf_p
, int padding
)
2196 size_t buf_alloc
, buf_pos
;
2199 /* This function does not have a length parameter; it reads the
2200 entire OBJECT). Also, it doesn't support objects fetched partly
2201 from one target and partly from another (in a different stratum,
2202 e.g. a core file and an executable). Both reasons make it
2203 unsuitable for reading memory. */
2204 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2206 /* Start by reading up to 4K at a time. The target will throttle
2207 this number down if necessary. */
2209 buf
= xmalloc (buf_alloc
);
2213 ULONGEST xfered_len
;
2214 enum target_xfer_status status
;
2216 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2217 buf_pos
, buf_alloc
- buf_pos
- padding
,
2220 if (status
== TARGET_XFER_EOF
)
2222 /* Read all there was. */
2229 else if (status
!= TARGET_XFER_OK
)
2231 /* An error occurred. */
2233 return TARGET_XFER_E_IO
;
2236 buf_pos
+= xfered_len
;
2238 /* If the buffer is filling up, expand it. */
2239 if (buf_alloc
< buf_pos
* 2)
2242 buf
= xrealloc (buf
, buf_alloc
);
2249 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2250 the size of the transferred data. See the declaration in "target.h"
2251 function for more information about the return value. */
2254 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2255 const char *annex
, gdb_byte
**buf_p
)
2257 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2260 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2261 returned as a string, allocated using xmalloc. If an error occurs
2262 or the transfer is unsupported, NULL is returned. Empty objects
2263 are returned as allocated but empty strings. A warning is issued
2264 if the result contains any embedded NUL bytes. */
2267 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2272 LONGEST i
, transferred
;
2274 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2275 bufstr
= (char *) buffer
;
2277 if (transferred
< 0)
2280 if (transferred
== 0)
2281 return xstrdup ("");
2283 bufstr
[transferred
] = 0;
2285 /* Check for embedded NUL bytes; but allow trailing NULs. */
2286 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2289 warning (_("target object %d, annex %s, "
2290 "contained unexpected null characters"),
2291 (int) object
, annex
? annex
: "(none)");
2298 /* Memory transfer methods. */
2301 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2304 /* This method is used to read from an alternate, non-current
2305 target. This read must bypass the overlay support (as symbols
2306 don't match this target), and GDB's internal cache (wrong cache
2307 for this target). */
2308 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2310 memory_error (TARGET_XFER_E_IO
, addr
);
2314 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2315 int len
, enum bfd_endian byte_order
)
2317 gdb_byte buf
[sizeof (ULONGEST
)];
2319 gdb_assert (len
<= sizeof (buf
));
2320 get_target_memory (ops
, addr
, buf
, len
);
2321 return extract_unsigned_integer (buf
, len
, byte_order
);
2327 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2328 struct bp_target_info
*bp_tgt
)
2330 if (!may_insert_breakpoints
)
2332 warning (_("May not insert breakpoints"));
2336 return current_target
.to_insert_breakpoint (¤t_target
,
2343 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2344 struct bp_target_info
*bp_tgt
)
2346 /* This is kind of a weird case to handle, but the permission might
2347 have been changed after breakpoints were inserted - in which case
2348 we should just take the user literally and assume that any
2349 breakpoints should be left in place. */
2350 if (!may_insert_breakpoints
)
2352 warning (_("May not remove breakpoints"));
2356 return current_target
.to_remove_breakpoint (¤t_target
,
2361 target_info (char *args
, int from_tty
)
2363 struct target_ops
*t
;
2364 int has_all_mem
= 0;
2366 if (symfile_objfile
!= NULL
)
2367 printf_unfiltered (_("Symbols from \"%s\".\n"),
2368 objfile_name (symfile_objfile
));
2370 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2372 if (!(*t
->to_has_memory
) (t
))
2375 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2378 printf_unfiltered (_("\tWhile running this, "
2379 "GDB does not access memory from...\n"));
2380 printf_unfiltered ("%s:\n", t
->to_longname
);
2381 (t
->to_files_info
) (t
);
2382 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2386 /* This function is called before any new inferior is created, e.g.
2387 by running a program, attaching, or connecting to a target.
2388 It cleans up any state from previous invocations which might
2389 change between runs. This is a subset of what target_preopen
2390 resets (things which might change between targets). */
2393 target_pre_inferior (int from_tty
)
2395 /* Clear out solib state. Otherwise the solib state of the previous
2396 inferior might have survived and is entirely wrong for the new
2397 target. This has been observed on GNU/Linux using glibc 2.3. How
2409 Cannot access memory at address 0xdeadbeef
2412 /* In some OSs, the shared library list is the same/global/shared
2413 across inferiors. If code is shared between processes, so are
2414 memory regions and features. */
2415 if (!gdbarch_has_global_solist (target_gdbarch ()))
2417 no_shared_libraries (NULL
, from_tty
);
2419 invalidate_target_mem_regions ();
2421 target_clear_description ();
2424 agent_capability_invalidate ();
2427 /* Callback for iterate_over_inferiors. Gets rid of the given
2431 dispose_inferior (struct inferior
*inf
, void *args
)
2433 struct thread_info
*thread
;
2435 thread
= any_thread_of_process (inf
->pid
);
2438 switch_to_thread (thread
->ptid
);
2440 /* Core inferiors actually should be detached, not killed. */
2441 if (target_has_execution
)
2444 target_detach (NULL
, 0);
2450 /* This is to be called by the open routine before it does
2454 target_preopen (int from_tty
)
2458 if (have_inferiors ())
2461 || !have_live_inferiors ()
2462 || query (_("A program is being debugged already. Kill it? ")))
2463 iterate_over_inferiors (dispose_inferior
, NULL
);
2465 error (_("Program not killed."));
2468 /* Calling target_kill may remove the target from the stack. But if
2469 it doesn't (which seems like a win for UDI), remove it now. */
2470 /* Leave the exec target, though. The user may be switching from a
2471 live process to a core of the same program. */
2472 pop_all_targets_above (file_stratum
);
2474 target_pre_inferior (from_tty
);
2477 /* Detach a target after doing deferred register stores. */
2480 target_detach (const char *args
, int from_tty
)
2482 struct target_ops
* t
;
2484 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2485 /* Don't remove global breakpoints here. They're removed on
2486 disconnection from the target. */
2489 /* If we're in breakpoints-always-inserted mode, have to remove
2490 them before detaching. */
2491 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2493 prepare_for_detach ();
2495 current_target
.to_detach (¤t_target
, args
, from_tty
);
2497 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2502 target_disconnect (char *args
, int from_tty
)
2504 struct target_ops
*t
;
2506 /* If we're in breakpoints-always-inserted mode or if breakpoints
2507 are global across processes, we have to remove them before
2509 remove_breakpoints ();
2511 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2512 if (t
->to_disconnect
!= NULL
)
2515 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2517 t
->to_disconnect (t
, args
, from_tty
);
2525 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2527 struct target_ops
*t
;
2528 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2533 char *status_string
;
2534 char *options_string
;
2536 status_string
= target_waitstatus_to_string (status
);
2537 options_string
= target_options_to_string (options
);
2538 fprintf_unfiltered (gdb_stdlog
,
2539 "target_wait (%d, status, options={%s})"
2541 ptid_get_pid (ptid
), options_string
,
2542 ptid_get_pid (retval
), status_string
);
2543 xfree (status_string
);
2544 xfree (options_string
);
2551 target_pid_to_str (ptid_t ptid
)
2553 struct target_ops
*t
;
2555 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2557 if (t
->to_pid_to_str
!= NULL
)
2558 return (*t
->to_pid_to_str
) (t
, ptid
);
2561 return normal_pid_to_str (ptid
);
2565 target_thread_name (struct thread_info
*info
)
2567 return current_target
.to_thread_name (¤t_target
, info
);
2571 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2573 struct target_ops
*t
;
2575 target_dcache_invalidate ();
2577 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2579 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2580 ptid_get_pid (ptid
),
2581 step
? "step" : "continue",
2582 gdb_signal_to_name (signal
));
2584 registers_changed_ptid (ptid
);
2585 set_executing (ptid
, 1);
2586 set_running (ptid
, 1);
2587 clear_inline_frame_state (ptid
);
2591 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2593 struct target_ops
*t
;
2595 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2597 if (t
->to_pass_signals
!= NULL
)
2603 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2606 for (i
= 0; i
< numsigs
; i
++)
2607 if (pass_signals
[i
])
2608 fprintf_unfiltered (gdb_stdlog
, " %s",
2609 gdb_signal_to_name (i
));
2611 fprintf_unfiltered (gdb_stdlog
, " })\n");
2614 (*t
->to_pass_signals
) (t
, numsigs
, pass_signals
);
2621 target_program_signals (int numsigs
, unsigned char *program_signals
)
2623 struct target_ops
*t
;
2625 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2627 if (t
->to_program_signals
!= NULL
)
2633 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2636 for (i
= 0; i
< numsigs
; i
++)
2637 if (program_signals
[i
])
2638 fprintf_unfiltered (gdb_stdlog
, " %s",
2639 gdb_signal_to_name (i
));
2641 fprintf_unfiltered (gdb_stdlog
, " })\n");
2644 (*t
->to_program_signals
) (t
, numsigs
, program_signals
);
2650 /* Look through the list of possible targets for a target that can
2654 target_follow_fork (int follow_child
, int detach_fork
)
2656 struct target_ops
*t
;
2658 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2660 if (t
->to_follow_fork
!= NULL
)
2662 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2665 fprintf_unfiltered (gdb_stdlog
,
2666 "target_follow_fork (%d, %d) = %d\n",
2667 follow_child
, detach_fork
, retval
);
2672 /* Some target returned a fork event, but did not know how to follow it. */
2673 internal_error (__FILE__
, __LINE__
,
2674 _("could not find a target to follow fork"));
2678 target_mourn_inferior (void)
2680 struct target_ops
*t
;
2682 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2684 if (t
->to_mourn_inferior
!= NULL
)
2686 t
->to_mourn_inferior (t
);
2688 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2690 /* We no longer need to keep handles on any of the object files.
2691 Make sure to release them to avoid unnecessarily locking any
2692 of them while we're not actually debugging. */
2693 bfd_cache_close_all ();
2699 internal_error (__FILE__
, __LINE__
,
2700 _("could not find a target to follow mourn inferior"));
2703 /* Look for a target which can describe architectural features, starting
2704 from TARGET. If we find one, return its description. */
2706 const struct target_desc
*
2707 target_read_description (struct target_ops
*target
)
2709 struct target_ops
*t
;
2711 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2712 if (t
->to_read_description
!= NULL
)
2714 const struct target_desc
*tdesc
;
2716 tdesc
= t
->to_read_description (t
);
2724 /* The default implementation of to_search_memory.
2725 This implements a basic search of memory, reading target memory and
2726 performing the search here (as opposed to performing the search in on the
2727 target side with, for example, gdbserver). */
2730 simple_search_memory (struct target_ops
*ops
,
2731 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2732 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2733 CORE_ADDR
*found_addrp
)
2735 /* NOTE: also defined in find.c testcase. */
2736 #define SEARCH_CHUNK_SIZE 16000
2737 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2738 /* Buffer to hold memory contents for searching. */
2739 gdb_byte
*search_buf
;
2740 unsigned search_buf_size
;
2741 struct cleanup
*old_cleanups
;
2743 search_buf_size
= chunk_size
+ pattern_len
- 1;
2745 /* No point in trying to allocate a buffer larger than the search space. */
2746 if (search_space_len
< search_buf_size
)
2747 search_buf_size
= search_space_len
;
2749 search_buf
= malloc (search_buf_size
);
2750 if (search_buf
== NULL
)
2751 error (_("Unable to allocate memory to perform the search."));
2752 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2754 /* Prime the search buffer. */
2756 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2757 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2759 warning (_("Unable to access %s bytes of target "
2760 "memory at %s, halting search."),
2761 pulongest (search_buf_size
), hex_string (start_addr
));
2762 do_cleanups (old_cleanups
);
2766 /* Perform the search.
2768 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2769 When we've scanned N bytes we copy the trailing bytes to the start and
2770 read in another N bytes. */
2772 while (search_space_len
>= pattern_len
)
2774 gdb_byte
*found_ptr
;
2775 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2777 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2778 pattern
, pattern_len
);
2780 if (found_ptr
!= NULL
)
2782 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2784 *found_addrp
= found_addr
;
2785 do_cleanups (old_cleanups
);
2789 /* Not found in this chunk, skip to next chunk. */
2791 /* Don't let search_space_len wrap here, it's unsigned. */
2792 if (search_space_len
>= chunk_size
)
2793 search_space_len
-= chunk_size
;
2795 search_space_len
= 0;
2797 if (search_space_len
>= pattern_len
)
2799 unsigned keep_len
= search_buf_size
- chunk_size
;
2800 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2803 /* Copy the trailing part of the previous iteration to the front
2804 of the buffer for the next iteration. */
2805 gdb_assert (keep_len
== pattern_len
- 1);
2806 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2808 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2810 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2811 search_buf
+ keep_len
, read_addr
,
2812 nr_to_read
) != nr_to_read
)
2814 warning (_("Unable to access %s bytes of target "
2815 "memory at %s, halting search."),
2816 plongest (nr_to_read
),
2817 hex_string (read_addr
));
2818 do_cleanups (old_cleanups
);
2822 start_addr
+= chunk_size
;
2828 do_cleanups (old_cleanups
);
2832 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2833 sequence of bytes in PATTERN with length PATTERN_LEN.
2835 The result is 1 if found, 0 if not found, and -1 if there was an error
2836 requiring halting of the search (e.g. memory read error).
2837 If the pattern is found the address is recorded in FOUND_ADDRP. */
2840 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2841 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2842 CORE_ADDR
*found_addrp
)
2844 struct target_ops
*t
;
2847 /* We don't use INHERIT to set current_target.to_search_memory,
2848 so we have to scan the target stack and handle targetdebug
2852 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2853 hex_string (start_addr
));
2855 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2856 if (t
->to_search_memory
!= NULL
)
2861 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2862 pattern
, pattern_len
, found_addrp
);
2866 /* If a special version of to_search_memory isn't available, use the
2868 found
= simple_search_memory (current_target
.beneath
,
2869 start_addr
, search_space_len
,
2870 pattern
, pattern_len
, found_addrp
);
2874 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2879 /* Look through the currently pushed targets. If none of them will
2880 be able to restart the currently running process, issue an error
2884 target_require_runnable (void)
2886 struct target_ops
*t
;
2888 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2890 /* If this target knows how to create a new program, then
2891 assume we will still be able to after killing the current
2892 one. Either killing and mourning will not pop T, or else
2893 find_default_run_target will find it again. */
2894 if (t
->to_create_inferior
!= NULL
)
2897 /* Do not worry about thread_stratum targets that can not
2898 create inferiors. Assume they will be pushed again if
2899 necessary, and continue to the process_stratum. */
2900 if (t
->to_stratum
== thread_stratum
2901 || t
->to_stratum
== arch_stratum
)
2904 error (_("The \"%s\" target does not support \"run\". "
2905 "Try \"help target\" or \"continue\"."),
2909 /* This function is only called if the target is running. In that
2910 case there should have been a process_stratum target and it
2911 should either know how to create inferiors, or not... */
2912 internal_error (__FILE__
, __LINE__
, _("No targets found"));
2915 /* Look through the list of possible targets for a target that can
2916 execute a run or attach command without any other data. This is
2917 used to locate the default process stratum.
2919 If DO_MESG is not NULL, the result is always valid (error() is
2920 called for errors); else, return NULL on error. */
2922 static struct target_ops
*
2923 find_default_run_target (char *do_mesg
)
2925 struct target_ops
**t
;
2926 struct target_ops
*runable
= NULL
;
2931 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2934 if ((*t
)->to_can_run
&& target_can_run (*t
))
2944 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
2953 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
2955 struct target_ops
*t
;
2957 t
= find_default_run_target ("attach");
2958 (t
->to_attach
) (t
, args
, from_tty
);
2963 find_default_create_inferior (struct target_ops
*ops
,
2964 char *exec_file
, char *allargs
, char **env
,
2967 struct target_ops
*t
;
2969 t
= find_default_run_target ("run");
2970 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
2975 find_default_can_async_p (struct target_ops
*ignore
)
2977 struct target_ops
*t
;
2979 /* This may be called before the target is pushed on the stack;
2980 look for the default process stratum. If there's none, gdb isn't
2981 configured with a native debugger, and target remote isn't
2983 t
= find_default_run_target (NULL
);
2984 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
2985 return (t
->to_can_async_p
) (t
);
2990 find_default_is_async_p (struct target_ops
*ignore
)
2992 struct target_ops
*t
;
2994 /* This may be called before the target is pushed on the stack;
2995 look for the default process stratum. If there's none, gdb isn't
2996 configured with a native debugger, and target remote isn't
2998 t
= find_default_run_target (NULL
);
2999 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
3000 return (t
->to_is_async_p
) (t
);
3005 find_default_supports_non_stop (struct target_ops
*self
)
3007 struct target_ops
*t
;
3009 t
= find_default_run_target (NULL
);
3010 if (t
&& t
->to_supports_non_stop
)
3011 return (t
->to_supports_non_stop
) (t
);
3016 target_supports_non_stop (void)
3018 struct target_ops
*t
;
3020 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3021 if (t
->to_supports_non_stop
)
3022 return t
->to_supports_non_stop (t
);
3027 /* Implement the "info proc" command. */
3030 target_info_proc (char *args
, enum info_proc_what what
)
3032 struct target_ops
*t
;
3034 /* If we're already connected to something that can get us OS
3035 related data, use it. Otherwise, try using the native
3037 if (current_target
.to_stratum
>= process_stratum
)
3038 t
= current_target
.beneath
;
3040 t
= find_default_run_target (NULL
);
3042 for (; t
!= NULL
; t
= t
->beneath
)
3044 if (t
->to_info_proc
!= NULL
)
3046 t
->to_info_proc (t
, args
, what
);
3049 fprintf_unfiltered (gdb_stdlog
,
3050 "target_info_proc (\"%s\", %d)\n", args
, what
);
3060 find_default_supports_disable_randomization (struct target_ops
*self
)
3062 struct target_ops
*t
;
3064 t
= find_default_run_target (NULL
);
3065 if (t
&& t
->to_supports_disable_randomization
)
3066 return (t
->to_supports_disable_randomization
) (t
);
3071 target_supports_disable_randomization (void)
3073 struct target_ops
*t
;
3075 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3076 if (t
->to_supports_disable_randomization
)
3077 return t
->to_supports_disable_randomization (t
);
3083 target_get_osdata (const char *type
)
3085 struct target_ops
*t
;
3087 /* If we're already connected to something that can get us OS
3088 related data, use it. Otherwise, try using the native
3090 if (current_target
.to_stratum
>= process_stratum
)
3091 t
= current_target
.beneath
;
3093 t
= find_default_run_target ("get OS data");
3098 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3101 /* Determine the current address space of thread PTID. */
3103 struct address_space
*
3104 target_thread_address_space (ptid_t ptid
)
3106 struct address_space
*aspace
;
3107 struct inferior
*inf
;
3108 struct target_ops
*t
;
3110 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3112 if (t
->to_thread_address_space
!= NULL
)
3114 aspace
= t
->to_thread_address_space (t
, ptid
);
3115 gdb_assert (aspace
);
3118 fprintf_unfiltered (gdb_stdlog
,
3119 "target_thread_address_space (%s) = %d\n",
3120 target_pid_to_str (ptid
),
3121 address_space_num (aspace
));
3126 /* Fall-back to the "main" address space of the inferior. */
3127 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3129 if (inf
== NULL
|| inf
->aspace
== NULL
)
3130 internal_error (__FILE__
, __LINE__
,
3131 _("Can't determine the current "
3132 "address space of thread %s\n"),
3133 target_pid_to_str (ptid
));
3139 /* Target file operations. */
3141 static struct target_ops
*
3142 default_fileio_target (void)
3144 /* If we're already connected to something that can perform
3145 file I/O, use it. Otherwise, try using the native target. */
3146 if (current_target
.to_stratum
>= process_stratum
)
3147 return current_target
.beneath
;
3149 return find_default_run_target ("file I/O");
3152 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3153 target file descriptor, or -1 if an error occurs (and set
3156 target_fileio_open (const char *filename
, int flags
, int mode
,
3159 struct target_ops
*t
;
3161 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3163 if (t
->to_fileio_open
!= NULL
)
3165 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3168 fprintf_unfiltered (gdb_stdlog
,
3169 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3170 filename
, flags
, mode
,
3171 fd
, fd
!= -1 ? 0 : *target_errno
);
3176 *target_errno
= FILEIO_ENOSYS
;
3180 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3181 Return the number of bytes written, or -1 if an error occurs
3182 (and set *TARGET_ERRNO). */
3184 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3185 ULONGEST offset
, int *target_errno
)
3187 struct target_ops
*t
;
3189 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3191 if (t
->to_fileio_pwrite
!= NULL
)
3193 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3197 fprintf_unfiltered (gdb_stdlog
,
3198 "target_fileio_pwrite (%d,...,%d,%s) "
3200 fd
, len
, pulongest (offset
),
3201 ret
, ret
!= -1 ? 0 : *target_errno
);
3206 *target_errno
= FILEIO_ENOSYS
;
3210 /* Read up to LEN bytes FD on the target into READ_BUF.
3211 Return the number of bytes read, or -1 if an error occurs
3212 (and set *TARGET_ERRNO). */
3214 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3215 ULONGEST offset
, int *target_errno
)
3217 struct target_ops
*t
;
3219 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3221 if (t
->to_fileio_pread
!= NULL
)
3223 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3227 fprintf_unfiltered (gdb_stdlog
,
3228 "target_fileio_pread (%d,...,%d,%s) "
3230 fd
, len
, pulongest (offset
),
3231 ret
, ret
!= -1 ? 0 : *target_errno
);
3236 *target_errno
= FILEIO_ENOSYS
;
3240 /* Close FD on the target. Return 0, or -1 if an error occurs
3241 (and set *TARGET_ERRNO). */
3243 target_fileio_close (int fd
, int *target_errno
)
3245 struct target_ops
*t
;
3247 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3249 if (t
->to_fileio_close
!= NULL
)
3251 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3254 fprintf_unfiltered (gdb_stdlog
,
3255 "target_fileio_close (%d) = %d (%d)\n",
3256 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3261 *target_errno
= FILEIO_ENOSYS
;
3265 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3266 occurs (and set *TARGET_ERRNO). */
3268 target_fileio_unlink (const char *filename
, int *target_errno
)
3270 struct target_ops
*t
;
3272 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3274 if (t
->to_fileio_unlink
!= NULL
)
3276 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3279 fprintf_unfiltered (gdb_stdlog
,
3280 "target_fileio_unlink (%s) = %d (%d)\n",
3281 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3286 *target_errno
= FILEIO_ENOSYS
;
3290 /* Read value of symbolic link FILENAME on the target. Return a
3291 null-terminated string allocated via xmalloc, or NULL if an error
3292 occurs (and set *TARGET_ERRNO). */
3294 target_fileio_readlink (const char *filename
, int *target_errno
)
3296 struct target_ops
*t
;
3298 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3300 if (t
->to_fileio_readlink
!= NULL
)
3302 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3305 fprintf_unfiltered (gdb_stdlog
,
3306 "target_fileio_readlink (%s) = %s (%d)\n",
3307 filename
, ret
? ret
: "(nil)",
3308 ret
? 0 : *target_errno
);
3313 *target_errno
= FILEIO_ENOSYS
;
3318 target_fileio_close_cleanup (void *opaque
)
3320 int fd
= *(int *) opaque
;
3323 target_fileio_close (fd
, &target_errno
);
3326 /* Read target file FILENAME. Store the result in *BUF_P and
3327 return the size of the transferred data. PADDING additional bytes are
3328 available in *BUF_P. This is a helper function for
3329 target_fileio_read_alloc; see the declaration of that function for more
3333 target_fileio_read_alloc_1 (const char *filename
,
3334 gdb_byte
**buf_p
, int padding
)
3336 struct cleanup
*close_cleanup
;
3337 size_t buf_alloc
, buf_pos
;
3343 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3347 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3349 /* Start by reading up to 4K at a time. The target will throttle
3350 this number down if necessary. */
3352 buf
= xmalloc (buf_alloc
);
3356 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3357 buf_alloc
- buf_pos
- padding
, buf_pos
,
3361 /* An error occurred. */
3362 do_cleanups (close_cleanup
);
3368 /* Read all there was. */
3369 do_cleanups (close_cleanup
);
3379 /* If the buffer is filling up, expand it. */
3380 if (buf_alloc
< buf_pos
* 2)
3383 buf
= xrealloc (buf
, buf_alloc
);
3390 /* Read target file FILENAME. Store the result in *BUF_P and return
3391 the size of the transferred data. See the declaration in "target.h"
3392 function for more information about the return value. */
3395 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3397 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3400 /* Read target file FILENAME. The result is NUL-terminated and
3401 returned as a string, allocated using xmalloc. If an error occurs
3402 or the transfer is unsupported, NULL is returned. Empty objects
3403 are returned as allocated but empty strings. A warning is issued
3404 if the result contains any embedded NUL bytes. */
3407 target_fileio_read_stralloc (const char *filename
)
3411 LONGEST i
, transferred
;
3413 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3414 bufstr
= (char *) buffer
;
3416 if (transferred
< 0)
3419 if (transferred
== 0)
3420 return xstrdup ("");
3422 bufstr
[transferred
] = 0;
3424 /* Check for embedded NUL bytes; but allow trailing NULs. */
3425 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3428 warning (_("target file %s "
3429 "contained unexpected null characters"),
3439 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3440 CORE_ADDR addr
, int len
)
3442 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3446 default_watchpoint_addr_within_range (struct target_ops
*target
,
3448 CORE_ADDR start
, int length
)
3450 return addr
>= start
&& addr
< start
+ length
;
3453 static struct gdbarch
*
3454 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3456 return target_gdbarch ();
3466 * Find the next target down the stack from the specified target.
3470 find_target_beneath (struct target_ops
*t
)
3478 find_target_at (enum strata stratum
)
3480 struct target_ops
*t
;
3482 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3483 if (t
->to_stratum
== stratum
)
3490 /* The inferior process has died. Long live the inferior! */
3493 generic_mourn_inferior (void)
3497 ptid
= inferior_ptid
;
3498 inferior_ptid
= null_ptid
;
3500 /* Mark breakpoints uninserted in case something tries to delete a
3501 breakpoint while we delete the inferior's threads (which would
3502 fail, since the inferior is long gone). */
3503 mark_breakpoints_out ();
3505 if (!ptid_equal (ptid
, null_ptid
))
3507 int pid
= ptid_get_pid (ptid
);
3508 exit_inferior (pid
);
3511 /* Note this wipes step-resume breakpoints, so needs to be done
3512 after exit_inferior, which ends up referencing the step-resume
3513 breakpoints through clear_thread_inferior_resources. */
3514 breakpoint_init_inferior (inf_exited
);
3516 registers_changed ();
3518 reopen_exec_file ();
3519 reinit_frame_cache ();
3521 if (deprecated_detach_hook
)
3522 deprecated_detach_hook ();
3525 /* Convert a normal process ID to a string. Returns the string in a
3529 normal_pid_to_str (ptid_t ptid
)
3531 static char buf
[32];
3533 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3538 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3540 return normal_pid_to_str (ptid
);
3543 /* Error-catcher for target_find_memory_regions. */
3545 dummy_find_memory_regions (struct target_ops
*self
,
3546 find_memory_region_ftype ignore1
, void *ignore2
)
3548 error (_("Command not implemented for this target."));
3552 /* Error-catcher for target_make_corefile_notes. */
3554 dummy_make_corefile_notes (struct target_ops
*self
,
3555 bfd
*ignore1
, int *ignore2
)
3557 error (_("Command not implemented for this target."));
3561 /* Set up the handful of non-empty slots needed by the dummy target
3565 init_dummy_target (void)
3567 dummy_target
.to_shortname
= "None";
3568 dummy_target
.to_longname
= "None";
3569 dummy_target
.to_doc
= "";
3570 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3571 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3572 dummy_target
.to_supports_disable_randomization
3573 = find_default_supports_disable_randomization
;
3574 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3575 dummy_target
.to_stratum
= dummy_stratum
;
3576 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3577 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3578 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3579 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3580 dummy_target
.to_has_execution
3581 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3582 dummy_target
.to_magic
= OPS_MAGIC
;
3584 install_dummy_methods (&dummy_target
);
3588 debug_to_open (char *args
, int from_tty
)
3590 debug_target
.to_open (args
, from_tty
);
3592 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3596 target_close (struct target_ops
*targ
)
3598 gdb_assert (!target_is_pushed (targ
));
3600 if (targ
->to_xclose
!= NULL
)
3601 targ
->to_xclose (targ
);
3602 else if (targ
->to_close
!= NULL
)
3603 targ
->to_close (targ
);
3606 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3610 target_attach (char *args
, int from_tty
)
3612 current_target
.to_attach (¤t_target
, args
, from_tty
);
3614 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3619 target_thread_alive (ptid_t ptid
)
3621 struct target_ops
*t
;
3623 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3625 if (t
->to_thread_alive
!= NULL
)
3629 retval
= t
->to_thread_alive (t
, ptid
);
3631 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3632 ptid_get_pid (ptid
), retval
);
3642 target_find_new_threads (void)
3644 struct target_ops
*t
;
3646 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3648 if (t
->to_find_new_threads
!= NULL
)
3650 t
->to_find_new_threads (t
);
3652 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3660 target_stop (ptid_t ptid
)
3664 warning (_("May not interrupt or stop the target, ignoring attempt"));
3668 (*current_target
.to_stop
) (¤t_target
, ptid
);
3672 debug_to_post_attach (struct target_ops
*self
, int pid
)
3674 debug_target
.to_post_attach (&debug_target
, pid
);
3676 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3679 /* Concatenate ELEM to LIST, a comma separate list, and return the
3680 result. The LIST incoming argument is released. */
3683 str_comma_list_concat_elem (char *list
, const char *elem
)
3686 return xstrdup (elem
);
3688 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3691 /* Helper for target_options_to_string. If OPT is present in
3692 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3693 Returns the new resulting string. OPT is removed from
3697 do_option (int *target_options
, char *ret
,
3698 int opt
, char *opt_str
)
3700 if ((*target_options
& opt
) != 0)
3702 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3703 *target_options
&= ~opt
;
3710 target_options_to_string (int target_options
)
3714 #define DO_TARG_OPTION(OPT) \
3715 ret = do_option (&target_options, ret, OPT, #OPT)
3717 DO_TARG_OPTION (TARGET_WNOHANG
);
3719 if (target_options
!= 0)
3720 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3728 debug_print_register (const char * func
,
3729 struct regcache
*regcache
, int regno
)
3731 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3733 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3734 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3735 && gdbarch_register_name (gdbarch
, regno
) != NULL
3736 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3737 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3738 gdbarch_register_name (gdbarch
, regno
));
3740 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3741 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3743 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3744 int i
, size
= register_size (gdbarch
, regno
);
3745 gdb_byte buf
[MAX_REGISTER_SIZE
];
3747 regcache_raw_collect (regcache
, regno
, buf
);
3748 fprintf_unfiltered (gdb_stdlog
, " = ");
3749 for (i
= 0; i
< size
; i
++)
3751 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3753 if (size
<= sizeof (LONGEST
))
3755 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3757 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3758 core_addr_to_string_nz (val
), plongest (val
));
3761 fprintf_unfiltered (gdb_stdlog
, "\n");
3765 target_fetch_registers (struct regcache
*regcache
, int regno
)
3767 struct target_ops
*t
;
3769 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3771 if (t
->to_fetch_registers
!= NULL
)
3773 t
->to_fetch_registers (t
, regcache
, regno
);
3775 debug_print_register ("target_fetch_registers", regcache
, regno
);
3782 target_store_registers (struct regcache
*regcache
, int regno
)
3784 struct target_ops
*t
;
3786 if (!may_write_registers
)
3787 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3789 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3792 debug_print_register ("target_store_registers", regcache
, regno
);
3797 target_core_of_thread (ptid_t ptid
)
3799 struct target_ops
*t
;
3801 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3803 if (t
->to_core_of_thread
!= NULL
)
3805 int retval
= t
->to_core_of_thread (t
, ptid
);
3808 fprintf_unfiltered (gdb_stdlog
,
3809 "target_core_of_thread (%d) = %d\n",
3810 ptid_get_pid (ptid
), retval
);
3819 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3821 struct target_ops
*t
;
3823 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3825 if (t
->to_verify_memory
!= NULL
)
3827 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3830 fprintf_unfiltered (gdb_stdlog
,
3831 "target_verify_memory (%s, %s) = %d\n",
3832 paddress (target_gdbarch (), memaddr
),
3842 /* The documentation for this function is in its prototype declaration in
3846 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3848 struct target_ops
*t
;
3850 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3851 if (t
->to_insert_mask_watchpoint
!= NULL
)
3855 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
3858 fprintf_unfiltered (gdb_stdlog
, "\
3859 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3860 core_addr_to_string (addr
),
3861 core_addr_to_string (mask
), rw
, ret
);
3869 /* The documentation for this function is in its prototype declaration in
3873 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3875 struct target_ops
*t
;
3877 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3878 if (t
->to_remove_mask_watchpoint
!= NULL
)
3882 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
3885 fprintf_unfiltered (gdb_stdlog
, "\
3886 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3887 core_addr_to_string (addr
),
3888 core_addr_to_string (mask
), rw
, ret
);
3896 /* The documentation for this function is in its prototype declaration
3900 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
3902 struct target_ops
*t
;
3904 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3905 if (t
->to_masked_watch_num_registers
!= NULL
)
3906 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
3911 /* The documentation for this function is in its prototype declaration
3915 target_ranged_break_num_registers (void)
3917 struct target_ops
*t
;
3919 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3920 if (t
->to_ranged_break_num_registers
!= NULL
)
3921 return t
->to_ranged_break_num_registers (t
);
3928 struct btrace_target_info
*
3929 target_enable_btrace (ptid_t ptid
)
3931 struct target_ops
*t
;
3933 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3934 if (t
->to_enable_btrace
!= NULL
)
3935 return t
->to_enable_btrace (t
, ptid
);
3944 target_disable_btrace (struct btrace_target_info
*btinfo
)
3946 struct target_ops
*t
;
3948 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3949 if (t
->to_disable_btrace
!= NULL
)
3951 t
->to_disable_btrace (t
, btinfo
);
3961 target_teardown_btrace (struct btrace_target_info
*btinfo
)
3963 struct target_ops
*t
;
3965 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3966 if (t
->to_teardown_btrace
!= NULL
)
3968 t
->to_teardown_btrace (t
, btinfo
);
3978 target_read_btrace (VEC (btrace_block_s
) **btrace
,
3979 struct btrace_target_info
*btinfo
,
3980 enum btrace_read_type type
)
3982 struct target_ops
*t
;
3984 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3985 if (t
->to_read_btrace
!= NULL
)
3986 return t
->to_read_btrace (t
, btrace
, btinfo
, type
);
3989 return BTRACE_ERR_NOT_SUPPORTED
;
3995 target_stop_recording (void)
3997 struct target_ops
*t
;
3999 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4000 if (t
->to_stop_recording
!= NULL
)
4002 t
->to_stop_recording (t
);
4006 /* This is optional. */
4012 target_info_record (void)
4014 struct target_ops
*t
;
4016 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4017 if (t
->to_info_record
!= NULL
)
4019 t
->to_info_record (t
);
4029 target_save_record (const char *filename
)
4031 struct target_ops
*t
;
4033 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4034 if (t
->to_save_record
!= NULL
)
4036 t
->to_save_record (t
, filename
);
4046 target_supports_delete_record (void)
4048 struct target_ops
*t
;
4050 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4051 if (t
->to_delete_record
!= NULL
)
4060 target_delete_record (void)
4062 struct target_ops
*t
;
4064 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4065 if (t
->to_delete_record
!= NULL
)
4067 t
->to_delete_record (t
);
4077 target_record_is_replaying (void)
4079 struct target_ops
*t
;
4081 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4082 if (t
->to_record_is_replaying
!= NULL
)
4083 return t
->to_record_is_replaying (t
);
4091 target_goto_record_begin (void)
4093 struct target_ops
*t
;
4095 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4096 if (t
->to_goto_record_begin
!= NULL
)
4098 t
->to_goto_record_begin (t
);
4108 target_goto_record_end (void)
4110 struct target_ops
*t
;
4112 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4113 if (t
->to_goto_record_end
!= NULL
)
4115 t
->to_goto_record_end (t
);
4125 target_goto_record (ULONGEST insn
)
4127 struct target_ops
*t
;
4129 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4130 if (t
->to_goto_record
!= NULL
)
4132 t
->to_goto_record (t
, insn
);
4142 target_insn_history (int size
, int flags
)
4144 struct target_ops
*t
;
4146 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4147 if (t
->to_insn_history
!= NULL
)
4149 t
->to_insn_history (t
, size
, flags
);
4159 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4161 struct target_ops
*t
;
4163 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4164 if (t
->to_insn_history_from
!= NULL
)
4166 t
->to_insn_history_from (t
, from
, size
, flags
);
4176 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4178 struct target_ops
*t
;
4180 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4181 if (t
->to_insn_history_range
!= NULL
)
4183 t
->to_insn_history_range (t
, begin
, end
, flags
);
4193 target_call_history (int size
, int flags
)
4195 struct target_ops
*t
;
4197 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4198 if (t
->to_call_history
!= NULL
)
4200 t
->to_call_history (t
, size
, flags
);
4210 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4212 struct target_ops
*t
;
4214 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4215 if (t
->to_call_history_from
!= NULL
)
4217 t
->to_call_history_from (t
, begin
, size
, flags
);
4227 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4229 struct target_ops
*t
;
4231 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4232 if (t
->to_call_history_range
!= NULL
)
4234 t
->to_call_history_range (t
, begin
, end
, flags
);
4242 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
4244 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
4246 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4251 const struct frame_unwind
*
4252 target_get_unwinder (void)
4254 struct target_ops
*t
;
4256 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4257 if (t
->to_get_unwinder
!= NULL
)
4258 return t
->to_get_unwinder
;
4265 const struct frame_unwind
*
4266 target_get_tailcall_unwinder (void)
4268 struct target_ops
*t
;
4270 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4271 if (t
->to_get_tailcall_unwinder
!= NULL
)
4272 return t
->to_get_tailcall_unwinder
;
4280 forward_target_decr_pc_after_break (struct target_ops
*ops
,
4281 struct gdbarch
*gdbarch
)
4283 for (; ops
!= NULL
; ops
= ops
->beneath
)
4284 if (ops
->to_decr_pc_after_break
!= NULL
)
4285 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
4287 return gdbarch_decr_pc_after_break (gdbarch
);
4293 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
4295 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
4299 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4300 int write
, struct mem_attrib
*attrib
,
4301 struct target_ops
*target
)
4305 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4308 fprintf_unfiltered (gdb_stdlog
,
4309 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4310 paddress (target_gdbarch (), memaddr
), len
,
4311 write
? "write" : "read", retval
);
4317 fputs_unfiltered (", bytes =", gdb_stdlog
);
4318 for (i
= 0; i
< retval
; i
++)
4320 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4322 if (targetdebug
< 2 && i
> 0)
4324 fprintf_unfiltered (gdb_stdlog
, " ...");
4327 fprintf_unfiltered (gdb_stdlog
, "\n");
4330 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4334 fputc_unfiltered ('\n', gdb_stdlog
);
4340 debug_to_files_info (struct target_ops
*target
)
4342 debug_target
.to_files_info (target
);
4344 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4348 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4349 struct bp_target_info
*bp_tgt
)
4353 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4355 fprintf_unfiltered (gdb_stdlog
,
4356 "target_insert_breakpoint (%s, xxx) = %ld\n",
4357 core_addr_to_string (bp_tgt
->placed_address
),
4358 (unsigned long) retval
);
4363 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4364 struct bp_target_info
*bp_tgt
)
4368 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4370 fprintf_unfiltered (gdb_stdlog
,
4371 "target_remove_breakpoint (%s, xxx) = %ld\n",
4372 core_addr_to_string (bp_tgt
->placed_address
),
4373 (unsigned long) retval
);
4378 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4379 int type
, int cnt
, int from_tty
)
4383 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4384 type
, cnt
, from_tty
);
4386 fprintf_unfiltered (gdb_stdlog
,
4387 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4388 (unsigned long) type
,
4389 (unsigned long) cnt
,
4390 (unsigned long) from_tty
,
4391 (unsigned long) retval
);
4396 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4397 CORE_ADDR addr
, int len
)
4401 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4404 fprintf_unfiltered (gdb_stdlog
,
4405 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4406 core_addr_to_string (addr
), (unsigned long) len
,
4407 core_addr_to_string (retval
));
4412 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4413 CORE_ADDR addr
, int len
, int rw
,
4414 struct expression
*cond
)
4418 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4422 fprintf_unfiltered (gdb_stdlog
,
4423 "target_can_accel_watchpoint_condition "
4424 "(%s, %d, %d, %s) = %ld\n",
4425 core_addr_to_string (addr
), len
, rw
,
4426 host_address_to_string (cond
), (unsigned long) retval
);
4431 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4435 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4437 fprintf_unfiltered (gdb_stdlog
,
4438 "target_stopped_by_watchpoint () = %ld\n",
4439 (unsigned long) retval
);
4444 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4448 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4450 fprintf_unfiltered (gdb_stdlog
,
4451 "target_stopped_data_address ([%s]) = %ld\n",
4452 core_addr_to_string (*addr
),
4453 (unsigned long)retval
);
4458 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4460 CORE_ADDR start
, int length
)
4464 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4467 fprintf_filtered (gdb_stdlog
,
4468 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4469 core_addr_to_string (addr
), core_addr_to_string (start
),
4475 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4476 struct gdbarch
*gdbarch
,
4477 struct bp_target_info
*bp_tgt
)
4481 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4484 fprintf_unfiltered (gdb_stdlog
,
4485 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4486 core_addr_to_string (bp_tgt
->placed_address
),
4487 (unsigned long) retval
);
4492 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4493 struct gdbarch
*gdbarch
,
4494 struct bp_target_info
*bp_tgt
)
4498 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4501 fprintf_unfiltered (gdb_stdlog
,
4502 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4503 core_addr_to_string (bp_tgt
->placed_address
),
4504 (unsigned long) retval
);
4509 debug_to_insert_watchpoint (struct target_ops
*self
,
4510 CORE_ADDR addr
, int len
, int type
,
4511 struct expression
*cond
)
4515 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4516 addr
, len
, type
, cond
);
4518 fprintf_unfiltered (gdb_stdlog
,
4519 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4520 core_addr_to_string (addr
), len
, type
,
4521 host_address_to_string (cond
), (unsigned long) retval
);
4526 debug_to_remove_watchpoint (struct target_ops
*self
,
4527 CORE_ADDR addr
, int len
, int type
,
4528 struct expression
*cond
)
4532 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4533 addr
, len
, type
, cond
);
4535 fprintf_unfiltered (gdb_stdlog
,
4536 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4537 core_addr_to_string (addr
), len
, type
,
4538 host_address_to_string (cond
), (unsigned long) retval
);
4543 debug_to_terminal_init (struct target_ops
*self
)
4545 debug_target
.to_terminal_init (&debug_target
);
4547 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4551 debug_to_terminal_inferior (struct target_ops
*self
)
4553 debug_target
.to_terminal_inferior (&debug_target
);
4555 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4559 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4561 debug_target
.to_terminal_ours_for_output (&debug_target
);
4563 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4567 debug_to_terminal_ours (struct target_ops
*self
)
4569 debug_target
.to_terminal_ours (&debug_target
);
4571 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4575 debug_to_terminal_save_ours (struct target_ops
*self
)
4577 debug_target
.to_terminal_save_ours (&debug_target
);
4579 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4583 debug_to_terminal_info (struct target_ops
*self
,
4584 const char *arg
, int from_tty
)
4586 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4588 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4593 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4595 debug_target
.to_load (&debug_target
, args
, from_tty
);
4597 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4601 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4603 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4605 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4606 ptid_get_pid (ptid
));
4610 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4614 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4616 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4623 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4627 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4629 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4636 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4640 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4642 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4649 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4653 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4655 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4662 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4666 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4668 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4675 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4679 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4681 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4688 debug_to_has_exited (struct target_ops
*self
,
4689 int pid
, int wait_status
, int *exit_status
)
4693 has_exited
= debug_target
.to_has_exited (&debug_target
,
4694 pid
, wait_status
, exit_status
);
4696 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4697 pid
, wait_status
, *exit_status
, has_exited
);
4703 debug_to_can_run (struct target_ops
*self
)
4707 retval
= debug_target
.to_can_run (&debug_target
);
4709 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4714 static struct gdbarch
*
4715 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4717 struct gdbarch
*retval
;
4719 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4721 fprintf_unfiltered (gdb_stdlog
,
4722 "target_thread_architecture (%s) = %s [%s]\n",
4723 target_pid_to_str (ptid
),
4724 host_address_to_string (retval
),
4725 gdbarch_bfd_arch_info (retval
)->printable_name
);
4730 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4732 debug_target
.to_stop (&debug_target
, ptid
);
4734 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4735 target_pid_to_str (ptid
));
4739 debug_to_rcmd (struct target_ops
*self
, char *command
,
4740 struct ui_file
*outbuf
)
4742 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4743 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4747 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4751 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4753 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4760 setup_target_debug (void)
4762 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4764 current_target
.to_open
= debug_to_open
;
4765 current_target
.to_post_attach
= debug_to_post_attach
;
4766 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4767 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4768 current_target
.to_files_info
= debug_to_files_info
;
4769 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4770 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4771 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4772 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4773 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4774 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4775 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4776 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4777 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4778 current_target
.to_watchpoint_addr_within_range
4779 = debug_to_watchpoint_addr_within_range
;
4780 current_target
.to_region_ok_for_hw_watchpoint
4781 = debug_to_region_ok_for_hw_watchpoint
;
4782 current_target
.to_can_accel_watchpoint_condition
4783 = debug_to_can_accel_watchpoint_condition
;
4784 current_target
.to_terminal_init
= debug_to_terminal_init
;
4785 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4786 current_target
.to_terminal_ours_for_output
4787 = debug_to_terminal_ours_for_output
;
4788 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4789 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4790 current_target
.to_terminal_info
= debug_to_terminal_info
;
4791 current_target
.to_load
= debug_to_load
;
4792 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4793 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4794 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4795 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4796 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4797 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4798 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4799 current_target
.to_has_exited
= debug_to_has_exited
;
4800 current_target
.to_can_run
= debug_to_can_run
;
4801 current_target
.to_stop
= debug_to_stop
;
4802 current_target
.to_rcmd
= debug_to_rcmd
;
4803 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4804 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4808 static char targ_desc
[] =
4809 "Names of targets and files being debugged.\nShows the entire \
4810 stack of targets currently in use (including the exec-file,\n\
4811 core-file, and process, if any), as well as the symbol file name.";
4814 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4816 error (_("\"monitor\" command not supported by this target."));
4820 do_monitor_command (char *cmd
,
4823 target_rcmd (cmd
, gdb_stdtarg
);
4826 /* Print the name of each layers of our target stack. */
4829 maintenance_print_target_stack (char *cmd
, int from_tty
)
4831 struct target_ops
*t
;
4833 printf_filtered (_("The current target stack is:\n"));
4835 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4837 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4841 /* Controls if async mode is permitted. */
4842 int target_async_permitted
= 0;
4844 /* The set command writes to this variable. If the inferior is
4845 executing, target_async_permitted is *not* updated. */
4846 static int target_async_permitted_1
= 0;
4849 set_target_async_command (char *args
, int from_tty
,
4850 struct cmd_list_element
*c
)
4852 if (have_live_inferiors ())
4854 target_async_permitted_1
= target_async_permitted
;
4855 error (_("Cannot change this setting while the inferior is running."));
4858 target_async_permitted
= target_async_permitted_1
;
4862 show_target_async_command (struct ui_file
*file
, int from_tty
,
4863 struct cmd_list_element
*c
,
4866 fprintf_filtered (file
,
4867 _("Controlling the inferior in "
4868 "asynchronous mode is %s.\n"), value
);
4871 /* Temporary copies of permission settings. */
4873 static int may_write_registers_1
= 1;
4874 static int may_write_memory_1
= 1;
4875 static int may_insert_breakpoints_1
= 1;
4876 static int may_insert_tracepoints_1
= 1;
4877 static int may_insert_fast_tracepoints_1
= 1;
4878 static int may_stop_1
= 1;
4880 /* Make the user-set values match the real values again. */
4883 update_target_permissions (void)
4885 may_write_registers_1
= may_write_registers
;
4886 may_write_memory_1
= may_write_memory
;
4887 may_insert_breakpoints_1
= may_insert_breakpoints
;
4888 may_insert_tracepoints_1
= may_insert_tracepoints
;
4889 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4890 may_stop_1
= may_stop
;
4893 /* The one function handles (most of) the permission flags in the same
4897 set_target_permissions (char *args
, int from_tty
,
4898 struct cmd_list_element
*c
)
4900 if (target_has_execution
)
4902 update_target_permissions ();
4903 error (_("Cannot change this setting while the inferior is running."));
4906 /* Make the real values match the user-changed values. */
4907 may_write_registers
= may_write_registers_1
;
4908 may_insert_breakpoints
= may_insert_breakpoints_1
;
4909 may_insert_tracepoints
= may_insert_tracepoints_1
;
4910 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4911 may_stop
= may_stop_1
;
4912 update_observer_mode ();
4915 /* Set memory write permission independently of observer mode. */
4918 set_write_memory_permission (char *args
, int from_tty
,
4919 struct cmd_list_element
*c
)
4921 /* Make the real values match the user-changed values. */
4922 may_write_memory
= may_write_memory_1
;
4923 update_observer_mode ();
4928 initialize_targets (void)
4930 init_dummy_target ();
4931 push_target (&dummy_target
);
4933 add_info ("target", target_info
, targ_desc
);
4934 add_info ("files", target_info
, targ_desc
);
4936 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
4937 Set target debugging."), _("\
4938 Show target debugging."), _("\
4939 When non-zero, target debugging is enabled. Higher numbers are more\n\
4940 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4944 &setdebuglist
, &showdebuglist
);
4946 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
4947 &trust_readonly
, _("\
4948 Set mode for reading from readonly sections."), _("\
4949 Show mode for reading from readonly sections."), _("\
4950 When this mode is on, memory reads from readonly sections (such as .text)\n\
4951 will be read from the object file instead of from the target. This will\n\
4952 result in significant performance improvement for remote targets."),
4954 show_trust_readonly
,
4955 &setlist
, &showlist
);
4957 add_com ("monitor", class_obscure
, do_monitor_command
,
4958 _("Send a command to the remote monitor (remote targets only)."));
4960 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
4961 _("Print the name of each layer of the internal target stack."),
4962 &maintenanceprintlist
);
4964 add_setshow_boolean_cmd ("target-async", no_class
,
4965 &target_async_permitted_1
, _("\
4966 Set whether gdb controls the inferior in asynchronous mode."), _("\
4967 Show whether gdb controls the inferior in asynchronous mode."), _("\
4968 Tells gdb whether to control the inferior in asynchronous mode."),
4969 set_target_async_command
,
4970 show_target_async_command
,
4974 add_setshow_boolean_cmd ("may-write-registers", class_support
,
4975 &may_write_registers_1
, _("\
4976 Set permission to write into registers."), _("\
4977 Show permission to write into registers."), _("\
4978 When this permission is on, GDB may write into the target's registers.\n\
4979 Otherwise, any sort of write attempt will result in an error."),
4980 set_target_permissions
, NULL
,
4981 &setlist
, &showlist
);
4983 add_setshow_boolean_cmd ("may-write-memory", class_support
,
4984 &may_write_memory_1
, _("\
4985 Set permission to write into target memory."), _("\
4986 Show permission to write into target memory."), _("\
4987 When this permission is on, GDB may write into the target's memory.\n\
4988 Otherwise, any sort of write attempt will result in an error."),
4989 set_write_memory_permission
, NULL
,
4990 &setlist
, &showlist
);
4992 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
4993 &may_insert_breakpoints_1
, _("\
4994 Set permission to insert breakpoints in the target."), _("\
4995 Show permission to insert breakpoints in the target."), _("\
4996 When this permission is on, GDB may insert breakpoints in the program.\n\
4997 Otherwise, any sort of insertion attempt will result in an error."),
4998 set_target_permissions
, NULL
,
4999 &setlist
, &showlist
);
5001 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5002 &may_insert_tracepoints_1
, _("\
5003 Set permission to insert tracepoints in the target."), _("\
5004 Show permission to insert tracepoints in the target."), _("\
5005 When this permission is on, GDB may insert tracepoints in the program.\n\
5006 Otherwise, any sort of insertion attempt will result in an error."),
5007 set_target_permissions
, NULL
,
5008 &setlist
, &showlist
);
5010 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5011 &may_insert_fast_tracepoints_1
, _("\
5012 Set permission to insert fast tracepoints in the target."), _("\
5013 Show permission to insert fast tracepoints in the target."), _("\
5014 When this permission is on, GDB may insert fast tracepoints.\n\
5015 Otherwise, any sort of insertion attempt will result in an error."),
5016 set_target_permissions
, NULL
,
5017 &setlist
, &showlist
);
5019 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5021 Set permission to interrupt or signal the target."), _("\
5022 Show permission to interrupt or signal the target."), _("\
5023 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5024 Otherwise, any attempt to interrupt or stop will be ignored."),
5025 set_target_permissions
, NULL
,
5026 &setlist
, &showlist
);