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"
49 static void target_info (char *, int);
51 static void default_terminal_info (struct target_ops
*, const char *, int);
53 static int default_watchpoint_addr_within_range (struct target_ops
*,
54 CORE_ADDR
, CORE_ADDR
, int);
56 static int default_region_ok_for_hw_watchpoint (struct target_ops
*,
59 static void default_rcmd (struct target_ops
*, char *, struct ui_file
*);
61 static ptid_t
default_get_ada_task_ptid (struct target_ops
*self
,
64 static int default_follow_fork (struct target_ops
*self
, int follow_child
,
67 static void default_mourn_inferior (struct target_ops
*self
);
69 static int default_search_memory (struct target_ops
*ops
,
71 ULONGEST search_space_len
,
72 const gdb_byte
*pattern
,
74 CORE_ADDR
*found_addrp
);
76 static void tcomplain (void) ATTRIBUTE_NORETURN
;
78 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
80 static int return_zero (void);
82 void target_ignore (void);
84 static void target_command (char *, int);
86 static struct target_ops
*find_default_run_target (char *);
88 static target_xfer_partial_ftype default_xfer_partial
;
90 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
93 static int dummy_find_memory_regions (struct target_ops
*self
,
94 find_memory_region_ftype ignore1
,
97 static char *dummy_make_corefile_notes (struct target_ops
*self
,
98 bfd
*ignore1
, int *ignore2
);
100 static char *default_pid_to_str (struct target_ops
*ops
, ptid_t ptid
);
102 static int find_default_can_async_p (struct target_ops
*ignore
);
104 static int find_default_is_async_p (struct target_ops
*ignore
);
106 static enum exec_direction_kind default_execution_direction
107 (struct target_ops
*self
);
109 #include "target-delegates.c"
111 static void init_dummy_target (void);
113 static struct target_ops debug_target
;
115 static void debug_to_open (char *, int);
117 static void debug_to_prepare_to_store (struct target_ops
*self
,
120 static void debug_to_files_info (struct target_ops
*);
122 static int debug_to_insert_breakpoint (struct target_ops
*, struct gdbarch
*,
123 struct bp_target_info
*);
125 static int debug_to_remove_breakpoint (struct target_ops
*, struct gdbarch
*,
126 struct bp_target_info
*);
128 static int debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
131 static int debug_to_insert_hw_breakpoint (struct target_ops
*self
,
133 struct bp_target_info
*);
135 static int debug_to_remove_hw_breakpoint (struct target_ops
*self
,
137 struct bp_target_info
*);
139 static int debug_to_insert_watchpoint (struct target_ops
*self
,
141 struct expression
*);
143 static int debug_to_remove_watchpoint (struct target_ops
*self
,
145 struct expression
*);
147 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
149 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
150 CORE_ADDR
, CORE_ADDR
, int);
152 static int debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
155 static int debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
157 struct expression
*);
159 static void debug_to_terminal_init (struct target_ops
*self
);
161 static void debug_to_terminal_inferior (struct target_ops
*self
);
163 static void debug_to_terminal_ours_for_output (struct target_ops
*self
);
165 static void debug_to_terminal_save_ours (struct target_ops
*self
);
167 static void debug_to_terminal_ours (struct target_ops
*self
);
169 static void debug_to_load (struct target_ops
*self
, char *, int);
171 static int debug_to_can_run (struct target_ops
*self
);
173 static void debug_to_stop (struct target_ops
*self
, ptid_t
);
175 /* Pointer to array of target architecture structures; the size of the
176 array; the current index into the array; the allocated size of the
178 struct target_ops
**target_structs
;
179 unsigned target_struct_size
;
180 unsigned target_struct_allocsize
;
181 #define DEFAULT_ALLOCSIZE 10
183 /* The initial current target, so that there is always a semi-valid
186 static struct target_ops dummy_target
;
188 /* Top of target stack. */
190 static struct target_ops
*target_stack
;
192 /* The target structure we are currently using to talk to a process
193 or file or whatever "inferior" we have. */
195 struct target_ops current_target
;
197 /* Command list for target. */
199 static struct cmd_list_element
*targetlist
= NULL
;
201 /* Nonzero if we should trust readonly sections from the
202 executable when reading memory. */
204 static int trust_readonly
= 0;
206 /* Nonzero if we should show true memory content including
207 memory breakpoint inserted by gdb. */
209 static int show_memory_breakpoints
= 0;
211 /* These globals control whether GDB attempts to perform these
212 operations; they are useful for targets that need to prevent
213 inadvertant disruption, such as in non-stop mode. */
215 int may_write_registers
= 1;
217 int may_write_memory
= 1;
219 int may_insert_breakpoints
= 1;
221 int may_insert_tracepoints
= 1;
223 int may_insert_fast_tracepoints
= 1;
227 /* Non-zero if we want to see trace of target level stuff. */
229 static unsigned int targetdebug
= 0;
231 show_targetdebug (struct ui_file
*file
, int from_tty
,
232 struct cmd_list_element
*c
, const char *value
)
234 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
237 static void setup_target_debug (void);
239 /* The user just typed 'target' without the name of a target. */
242 target_command (char *arg
, int from_tty
)
244 fputs_filtered ("Argument required (target name). Try `help target'\n",
248 /* Default target_has_* methods for process_stratum targets. */
251 default_child_has_all_memory (struct target_ops
*ops
)
253 /* If no inferior selected, then we can't read memory here. */
254 if (ptid_equal (inferior_ptid
, null_ptid
))
261 default_child_has_memory (struct target_ops
*ops
)
263 /* If no inferior selected, then we can't read memory here. */
264 if (ptid_equal (inferior_ptid
, null_ptid
))
271 default_child_has_stack (struct target_ops
*ops
)
273 /* If no inferior selected, there's no stack. */
274 if (ptid_equal (inferior_ptid
, null_ptid
))
281 default_child_has_registers (struct target_ops
*ops
)
283 /* Can't read registers from no inferior. */
284 if (ptid_equal (inferior_ptid
, null_ptid
))
291 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
293 /* If there's no thread selected, then we can't make it run through
295 if (ptid_equal (the_ptid
, null_ptid
))
303 target_has_all_memory_1 (void)
305 struct target_ops
*t
;
307 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
308 if (t
->to_has_all_memory (t
))
315 target_has_memory_1 (void)
317 struct target_ops
*t
;
319 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
320 if (t
->to_has_memory (t
))
327 target_has_stack_1 (void)
329 struct target_ops
*t
;
331 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
332 if (t
->to_has_stack (t
))
339 target_has_registers_1 (void)
341 struct target_ops
*t
;
343 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
344 if (t
->to_has_registers (t
))
351 target_has_execution_1 (ptid_t the_ptid
)
353 struct target_ops
*t
;
355 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
356 if (t
->to_has_execution (t
, the_ptid
))
363 target_has_execution_current (void)
365 return target_has_execution_1 (inferior_ptid
);
368 /* Complete initialization of T. This ensures that various fields in
369 T are set, if needed by the target implementation. */
372 complete_target_initialization (struct target_ops
*t
)
374 /* Provide default values for all "must have" methods. */
375 if (t
->to_xfer_partial
== NULL
)
376 t
->to_xfer_partial
= default_xfer_partial
;
378 if (t
->to_has_all_memory
== NULL
)
379 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
381 if (t
->to_has_memory
== NULL
)
382 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
384 if (t
->to_has_stack
== NULL
)
385 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
387 if (t
->to_has_registers
== NULL
)
388 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
390 if (t
->to_has_execution
== NULL
)
391 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
393 install_delegators (t
);
396 /* Add possible target architecture T to the list and add a new
397 command 'target T->to_shortname'. Set COMPLETER as the command's
398 completer if not NULL. */
401 add_target_with_completer (struct target_ops
*t
,
402 completer_ftype
*completer
)
404 struct cmd_list_element
*c
;
406 complete_target_initialization (t
);
410 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
411 target_structs
= (struct target_ops
**) xmalloc
412 (target_struct_allocsize
* sizeof (*target_structs
));
414 if (target_struct_size
>= target_struct_allocsize
)
416 target_struct_allocsize
*= 2;
417 target_structs
= (struct target_ops
**)
418 xrealloc ((char *) target_structs
,
419 target_struct_allocsize
* sizeof (*target_structs
));
421 target_structs
[target_struct_size
++] = t
;
423 if (targetlist
== NULL
)
424 add_prefix_cmd ("target", class_run
, target_command
, _("\
425 Connect to a target machine or process.\n\
426 The first argument is the type or protocol of the target machine.\n\
427 Remaining arguments are interpreted by the target protocol. For more\n\
428 information on the arguments for a particular protocol, type\n\
429 `help target ' followed by the protocol name."),
430 &targetlist
, "target ", 0, &cmdlist
);
431 c
= add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
,
433 if (completer
!= NULL
)
434 set_cmd_completer (c
, completer
);
437 /* Add a possible target architecture to the list. */
440 add_target (struct target_ops
*t
)
442 add_target_with_completer (t
, NULL
);
448 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
450 struct cmd_list_element
*c
;
453 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
455 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
456 alt
= xstrprintf ("target %s", t
->to_shortname
);
457 deprecate_cmd (c
, alt
);
471 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
473 current_target
.to_kill (¤t_target
);
477 target_load (char *arg
, int from_tty
)
479 target_dcache_invalidate ();
480 (*current_target
.to_load
) (¤t_target
, arg
, from_tty
);
484 target_create_inferior (char *exec_file
, char *args
,
485 char **env
, int from_tty
)
487 struct target_ops
*t
;
489 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
491 if (t
->to_create_inferior
!= NULL
)
493 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
495 fprintf_unfiltered (gdb_stdlog
,
496 "target_create_inferior (%s, %s, xxx, %d)\n",
497 exec_file
, args
, from_tty
);
502 internal_error (__FILE__
, __LINE__
,
503 _("could not find a target to create inferior"));
507 target_terminal_inferior (void)
509 /* A background resume (``run&'') should leave GDB in control of the
510 terminal. Use target_can_async_p, not target_is_async_p, since at
511 this point the target is not async yet. However, if sync_execution
512 is not set, we know it will become async prior to resume. */
513 if (target_can_async_p () && !sync_execution
)
516 /* If GDB is resuming the inferior in the foreground, install
517 inferior's terminal modes. */
518 (*current_target
.to_terminal_inferior
) (¤t_target
);
522 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
523 struct target_ops
*t
)
525 errno
= EIO
; /* Can't read/write this location. */
526 return 0; /* No bytes handled. */
532 error (_("You can't do that when your target is `%s'"),
533 current_target
.to_shortname
);
539 error (_("You can't do that without a process to debug."));
543 default_terminal_info (struct target_ops
*self
, const char *args
, int from_tty
)
545 printf_unfiltered (_("No saved terminal information.\n"));
548 /* A default implementation for the to_get_ada_task_ptid target method.
550 This function builds the PTID by using both LWP and TID as part of
551 the PTID lwp and tid elements. The pid used is the pid of the
555 default_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long tid
)
557 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
560 static enum exec_direction_kind
561 default_execution_direction (struct target_ops
*self
)
563 if (!target_can_execute_reverse
)
565 else if (!target_can_async_p ())
568 gdb_assert_not_reached ("\
569 to_execution_direction must be implemented for reverse async");
572 /* Go through the target stack from top to bottom, copying over zero
573 entries in current_target, then filling in still empty entries. In
574 effect, we are doing class inheritance through the pushed target
577 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
578 is currently implemented, is that it discards any knowledge of
579 which target an inherited method originally belonged to.
580 Consequently, new new target methods should instead explicitly and
581 locally search the target stack for the target that can handle the
585 update_current_target (void)
587 struct target_ops
*t
;
589 /* First, reset current's contents. */
590 memset (¤t_target
, 0, sizeof (current_target
));
592 /* Install the delegators. */
593 install_delegators (¤t_target
);
595 #define INHERIT(FIELD, TARGET) \
596 if (!current_target.FIELD) \
597 current_target.FIELD = (TARGET)->FIELD
599 for (t
= target_stack
; t
; t
= t
->beneath
)
601 INHERIT (to_shortname
, t
);
602 INHERIT (to_longname
, t
);
604 /* Do not inherit to_open. */
605 /* Do not inherit to_close. */
606 /* Do not inherit to_attach. */
607 /* Do not inherit to_post_attach. */
608 INHERIT (to_attach_no_wait
, t
);
609 /* Do not inherit to_detach. */
610 /* Do not inherit to_disconnect. */
611 /* Do not inherit to_resume. */
612 /* Do not inherit to_wait. */
613 /* Do not inherit to_fetch_registers. */
614 /* Do not inherit to_store_registers. */
615 /* Do not inherit to_prepare_to_store. */
616 INHERIT (deprecated_xfer_memory
, t
);
617 /* Do not inherit to_files_info. */
618 /* Do not inherit to_insert_breakpoint. */
619 /* Do not inherit to_remove_breakpoint. */
620 /* Do not inherit to_can_use_hw_breakpoint. */
621 /* Do not inherit to_insert_hw_breakpoint. */
622 /* Do not inherit to_remove_hw_breakpoint. */
623 /* Do not inherit to_ranged_break_num_registers. */
624 /* Do not inherit to_insert_watchpoint. */
625 /* Do not inherit to_remove_watchpoint. */
626 /* Do not inherit to_insert_mask_watchpoint. */
627 /* Do not inherit to_remove_mask_watchpoint. */
628 /* Do not inherit to_stopped_data_address. */
629 INHERIT (to_have_steppable_watchpoint
, t
);
630 INHERIT (to_have_continuable_watchpoint
, t
);
631 /* Do not inherit to_stopped_by_watchpoint. */
632 /* Do not inherit to_watchpoint_addr_within_range. */
633 /* Do not inherit to_region_ok_for_hw_watchpoint. */
634 /* Do not inherit to_can_accel_watchpoint_condition. */
635 /* Do not inherit to_masked_watch_num_registers. */
636 /* Do not inherit to_terminal_init. */
637 /* Do not inherit to_terminal_inferior. */
638 /* Do not inherit to_terminal_ours_for_output. */
639 /* Do not inherit to_terminal_ours. */
640 /* Do not inherit to_terminal_save_ours. */
641 /* Do not inherit to_terminal_info. */
642 /* Do not inherit to_kill. */
643 /* Do not inherit to_load. */
644 /* Do no inherit to_create_inferior. */
645 /* Do not inherit to_post_startup_inferior. */
646 /* Do not inherit to_insert_fork_catchpoint. */
647 /* Do not inherit to_remove_fork_catchpoint. */
648 /* Do not inherit to_insert_vfork_catchpoint. */
649 /* Do not inherit to_remove_vfork_catchpoint. */
650 /* Do not inherit to_follow_fork. */
651 /* Do not inherit to_insert_exec_catchpoint. */
652 /* Do not inherit to_remove_exec_catchpoint. */
653 /* Do not inherit to_set_syscall_catchpoint. */
654 /* Do not inherit to_has_exited. */
655 /* Do not inherit to_mourn_inferior. */
656 /* Do not inherit to_can_run. */
657 /* Do not inherit to_pass_signals. */
658 /* Do not inherit to_program_signals. */
659 /* Do not inherit to_thread_alive. */
660 /* Do not inherit to_find_new_threads. */
661 /* Do not inherit to_pid_to_str. */
662 /* Do not inherit to_extra_thread_info. */
663 /* Do not inherit to_thread_name. */
664 /* Do not inherit to_stop. */
665 /* Do not inherit to_xfer_partial. */
666 /* Do not inherit to_rcmd. */
667 /* Do not inherit to_pid_to_exec_file. */
668 /* Do not inherit to_log_command. */
669 INHERIT (to_stratum
, t
);
670 /* Do not inherit to_has_all_memory. */
671 /* Do not inherit to_has_memory. */
672 /* Do not inherit to_has_stack. */
673 /* Do not inherit to_has_registers. */
674 /* Do not inherit to_has_execution. */
675 INHERIT (to_has_thread_control
, t
);
676 /* Do not inherit to_can_async_p. */
677 /* Do not inherit to_is_async_p. */
678 /* Do not inherit to_async. */
679 /* Do not inherit to_find_memory_regions. */
680 /* Do not inherit to_make_corefile_notes. */
681 /* Do not inherit to_get_bookmark. */
682 /* Do not inherit to_goto_bookmark. */
683 /* Do not inherit to_get_thread_local_address. */
684 /* Do not inherit to_can_execute_reverse. */
685 /* Do not inherit to_execution_direction. */
686 /* Do not inherit to_thread_architecture. */
687 /* Do not inherit to_read_description. */
688 /* Do not inherit to_get_ada_task_ptid. */
689 /* Do not inherit to_search_memory. */
690 /* Do not inherit to_supports_multi_process. */
691 /* Do not inherit to_supports_enable_disable_tracepoint. */
692 /* Do not inherit to_supports_string_tracing. */
693 /* Do not inherit to_trace_init. */
694 /* Do not inherit to_download_tracepoint. */
695 /* Do not inherit to_can_download_tracepoint. */
696 /* Do not inherit to_download_trace_state_variable. */
697 /* Do not inherit to_enable_tracepoint. */
698 /* Do not inherit to_disable_tracepoint. */
699 /* Do not inherit to_trace_set_readonly_regions. */
700 /* Do not inherit to_trace_start. */
701 /* Do not inherit to_get_trace_status. */
702 /* Do not inherit to_get_tracepoint_status. */
703 /* Do not inherit to_trace_stop. */
704 /* Do not inherit to_trace_find. */
705 /* Do not inherit to_get_trace_state_variable_value. */
706 /* Do not inherit to_save_trace_data. */
707 /* Do not inherit to_upload_tracepoints. */
708 /* Do not inherit to_upload_trace_state_variables. */
709 /* Do not inherit to_get_raw_trace_data. */
710 /* Do not inherit to_get_min_fast_tracepoint_insn_len. */
711 /* Do not inherit to_set_disconnected_tracing. */
712 /* Do not inherit to_set_circular_trace_buffer. */
713 /* Do not inherit to_set_trace_buffer_size. */
714 /* Do not inherit to_set_trace_notes. */
715 /* Do not inherit to_get_tib_address. */
716 /* Do not inherit to_set_permissions. */
717 /* Do not inherit to_static_tracepoint_marker_at. */
718 /* Do not inherit to_static_tracepoint_markers_by_strid. */
719 /* Do not inherit to_traceframe_info. */
720 /* Do not inherit to_use_agent. */
721 /* Do not inherit to_can_use_agent. */
722 /* Do not inherit to_augmented_libraries_svr4_read. */
723 INHERIT (to_magic
, t
);
725 to_supports_evaluation_of_breakpoint_conditions. */
726 /* Do not inherit to_can_run_breakpoint_commands. */
727 /* Do not inherit to_memory_map. */
728 /* Do not inherit to_flash_erase. */
729 /* Do not inherit to_flash_done. */
733 /* Clean up a target struct so it no longer has any zero pointers in
734 it. Some entries are defaulted to a method that print an error,
735 others are hard-wired to a standard recursive default. */
737 #define de_fault(field, value) \
738 if (!current_target.field) \
739 current_target.field = value
742 (void (*) (char *, int))
745 (void (*) (struct target_ops
*))
747 de_fault (deprecated_xfer_memory
,
748 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
749 struct mem_attrib
*, struct target_ops
*))
754 /* Finally, position the target-stack beneath the squashed
755 "current_target". That way code looking for a non-inherited
756 target method can quickly and simply find it. */
757 current_target
.beneath
= target_stack
;
760 setup_target_debug ();
763 /* Push a new target type into the stack of the existing target accessors,
764 possibly superseding some of the existing accessors.
766 Rather than allow an empty stack, we always have the dummy target at
767 the bottom stratum, so we can call the function vectors without
771 push_target (struct target_ops
*t
)
773 struct target_ops
**cur
;
775 /* Check magic number. If wrong, it probably means someone changed
776 the struct definition, but not all the places that initialize one. */
777 if (t
->to_magic
!= OPS_MAGIC
)
779 fprintf_unfiltered (gdb_stderr
,
780 "Magic number of %s target struct wrong\n",
782 internal_error (__FILE__
, __LINE__
,
783 _("failed internal consistency check"));
786 /* Find the proper stratum to install this target in. */
787 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
789 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
793 /* If there's already targets at this stratum, remove them. */
794 /* FIXME: cagney/2003-10-15: I think this should be popping all
795 targets to CUR, and not just those at this stratum level. */
796 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
798 /* There's already something at this stratum level. Close it,
799 and un-hook it from the stack. */
800 struct target_ops
*tmp
= (*cur
);
802 (*cur
) = (*cur
)->beneath
;
807 /* We have removed all targets in our stratum, now add the new one. */
811 update_current_target ();
814 /* Remove a target_ops vector from the stack, wherever it may be.
815 Return how many times it was removed (0 or 1). */
818 unpush_target (struct target_ops
*t
)
820 struct target_ops
**cur
;
821 struct target_ops
*tmp
;
823 if (t
->to_stratum
== dummy_stratum
)
824 internal_error (__FILE__
, __LINE__
,
825 _("Attempt to unpush the dummy target"));
827 /* Look for the specified target. Note that we assume that a target
828 can only occur once in the target stack. */
830 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
836 /* If we don't find target_ops, quit. Only open targets should be
841 /* Unchain the target. */
843 (*cur
) = (*cur
)->beneath
;
846 update_current_target ();
848 /* Finally close the target. Note we do this after unchaining, so
849 any target method calls from within the target_close
850 implementation don't end up in T anymore. */
857 pop_all_targets_above (enum strata above_stratum
)
859 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
861 if (!unpush_target (target_stack
))
863 fprintf_unfiltered (gdb_stderr
,
864 "pop_all_targets couldn't find target %s\n",
865 target_stack
->to_shortname
);
866 internal_error (__FILE__
, __LINE__
,
867 _("failed internal consistency check"));
874 pop_all_targets (void)
876 pop_all_targets_above (dummy_stratum
);
879 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
882 target_is_pushed (struct target_ops
*t
)
884 struct target_ops
**cur
;
886 /* Check magic number. If wrong, it probably means someone changed
887 the struct definition, but not all the places that initialize one. */
888 if (t
->to_magic
!= OPS_MAGIC
)
890 fprintf_unfiltered (gdb_stderr
,
891 "Magic number of %s target struct wrong\n",
893 internal_error (__FILE__
, __LINE__
,
894 _("failed internal consistency check"));
897 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
904 /* Using the objfile specified in OBJFILE, find the address for the
905 current thread's thread-local storage with offset OFFSET. */
907 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
909 volatile CORE_ADDR addr
= 0;
910 struct target_ops
*target
;
912 for (target
= current_target
.beneath
;
914 target
= target
->beneath
)
916 if (target
->to_get_thread_local_address
!= NULL
)
921 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
923 ptid_t ptid
= inferior_ptid
;
924 volatile struct gdb_exception ex
;
926 TRY_CATCH (ex
, RETURN_MASK_ALL
)
930 /* Fetch the load module address for this objfile. */
931 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
933 /* If it's 0, throw the appropriate exception. */
935 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
936 _("TLS load module not found"));
938 addr
= target
->to_get_thread_local_address (target
, ptid
,
941 /* If an error occurred, print TLS related messages here. Otherwise,
942 throw the error to some higher catcher. */
945 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
949 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
950 error (_("Cannot find thread-local variables "
951 "in this thread library."));
953 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
954 if (objfile_is_library
)
955 error (_("Cannot find shared library `%s' in dynamic"
956 " linker's load module list"), objfile_name (objfile
));
958 error (_("Cannot find executable file `%s' in dynamic"
959 " linker's load module list"), objfile_name (objfile
));
961 case TLS_NOT_ALLOCATED_YET_ERROR
:
962 if (objfile_is_library
)
963 error (_("The inferior has not yet allocated storage for"
964 " thread-local variables in\n"
965 "the shared library `%s'\n"
967 objfile_name (objfile
), target_pid_to_str (ptid
));
969 error (_("The inferior has not yet allocated storage for"
970 " thread-local variables in\n"
971 "the executable `%s'\n"
973 objfile_name (objfile
), target_pid_to_str (ptid
));
975 case TLS_GENERIC_ERROR
:
976 if (objfile_is_library
)
977 error (_("Cannot find thread-local storage for %s, "
978 "shared library %s:\n%s"),
979 target_pid_to_str (ptid
),
980 objfile_name (objfile
), ex
.message
);
982 error (_("Cannot find thread-local storage for %s, "
983 "executable file %s:\n%s"),
984 target_pid_to_str (ptid
),
985 objfile_name (objfile
), ex
.message
);
988 throw_exception (ex
);
993 /* It wouldn't be wrong here to try a gdbarch method, too; finding
994 TLS is an ABI-specific thing. But we don't do that yet. */
996 error (_("Cannot find thread-local variables on this target"));
1002 target_xfer_status_to_string (enum target_xfer_status err
)
1004 #define CASE(X) case X: return #X
1007 CASE(TARGET_XFER_E_IO
);
1008 CASE(TARGET_XFER_E_UNAVAILABLE
);
1017 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1019 /* target_read_string -- read a null terminated string, up to LEN bytes,
1020 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1021 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1022 is responsible for freeing it. Return the number of bytes successfully
1026 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1028 int tlen
, offset
, i
;
1032 int buffer_allocated
;
1034 unsigned int nbytes_read
= 0;
1036 gdb_assert (string
);
1038 /* Small for testing. */
1039 buffer_allocated
= 4;
1040 buffer
= xmalloc (buffer_allocated
);
1045 tlen
= MIN (len
, 4 - (memaddr
& 3));
1046 offset
= memaddr
& 3;
1048 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1051 /* The transfer request might have crossed the boundary to an
1052 unallocated region of memory. Retry the transfer, requesting
1056 errcode
= target_read_memory (memaddr
, buf
, 1);
1061 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1065 bytes
= bufptr
- buffer
;
1066 buffer_allocated
*= 2;
1067 buffer
= xrealloc (buffer
, buffer_allocated
);
1068 bufptr
= buffer
+ bytes
;
1071 for (i
= 0; i
< tlen
; i
++)
1073 *bufptr
++ = buf
[i
+ offset
];
1074 if (buf
[i
+ offset
] == '\000')
1076 nbytes_read
+= i
+ 1;
1083 nbytes_read
+= tlen
;
1092 struct target_section_table
*
1093 target_get_section_table (struct target_ops
*target
)
1096 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1098 return (*target
->to_get_section_table
) (target
);
1101 /* Find a section containing ADDR. */
1103 struct target_section
*
1104 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1106 struct target_section_table
*table
= target_get_section_table (target
);
1107 struct target_section
*secp
;
1112 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1114 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1120 /* Read memory from the live target, even if currently inspecting a
1121 traceframe. The return is the same as that of target_read. */
1123 static enum target_xfer_status
1124 target_read_live_memory (enum target_object object
,
1125 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1126 ULONGEST
*xfered_len
)
1128 enum target_xfer_status ret
;
1129 struct cleanup
*cleanup
;
1131 /* Switch momentarily out of tfind mode so to access live memory.
1132 Note that this must not clear global state, such as the frame
1133 cache, which must still remain valid for the previous traceframe.
1134 We may be _building_ the frame cache at this point. */
1135 cleanup
= make_cleanup_restore_traceframe_number ();
1136 set_traceframe_number (-1);
1138 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1139 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1141 do_cleanups (cleanup
);
1145 /* Using the set of read-only target sections of OPS, read live
1146 read-only memory. Note that the actual reads start from the
1147 top-most target again.
1149 For interface/parameters/return description see target.h,
1152 static enum target_xfer_status
1153 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1154 enum target_object object
,
1155 gdb_byte
*readbuf
, ULONGEST memaddr
,
1156 ULONGEST len
, ULONGEST
*xfered_len
)
1158 struct target_section
*secp
;
1159 struct target_section_table
*table
;
1161 secp
= target_section_by_addr (ops
, memaddr
);
1163 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1164 secp
->the_bfd_section
)
1167 struct target_section
*p
;
1168 ULONGEST memend
= memaddr
+ len
;
1170 table
= target_get_section_table (ops
);
1172 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1174 if (memaddr
>= p
->addr
)
1176 if (memend
<= p
->endaddr
)
1178 /* Entire transfer is within this section. */
1179 return target_read_live_memory (object
, memaddr
,
1180 readbuf
, len
, xfered_len
);
1182 else if (memaddr
>= p
->endaddr
)
1184 /* This section ends before the transfer starts. */
1189 /* This section overlaps the transfer. Just do half. */
1190 len
= p
->endaddr
- memaddr
;
1191 return target_read_live_memory (object
, memaddr
,
1192 readbuf
, len
, xfered_len
);
1198 return TARGET_XFER_EOF
;
1201 /* Read memory from more than one valid target. A core file, for
1202 instance, could have some of memory but delegate other bits to
1203 the target below it. So, we must manually try all targets. */
1205 static enum target_xfer_status
1206 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1207 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1208 ULONGEST
*xfered_len
)
1210 enum target_xfer_status res
;
1214 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1215 readbuf
, writebuf
, memaddr
, len
,
1217 if (res
== TARGET_XFER_OK
)
1220 /* Stop if the target reports that the memory is not available. */
1221 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1224 /* We want to continue past core files to executables, but not
1225 past a running target's memory. */
1226 if (ops
->to_has_all_memory (ops
))
1231 while (ops
!= NULL
);
1236 /* Perform a partial memory transfer.
1237 For docs see target.h, to_xfer_partial. */
1239 static enum target_xfer_status
1240 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1241 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1242 ULONGEST len
, ULONGEST
*xfered_len
)
1244 enum target_xfer_status res
;
1246 struct mem_region
*region
;
1247 struct inferior
*inf
;
1249 /* For accesses to unmapped overlay sections, read directly from
1250 files. Must do this first, as MEMADDR may need adjustment. */
1251 if (readbuf
!= NULL
&& overlay_debugging
)
1253 struct obj_section
*section
= find_pc_overlay (memaddr
);
1255 if (pc_in_unmapped_range (memaddr
, section
))
1257 struct target_section_table
*table
1258 = target_get_section_table (ops
);
1259 const char *section_name
= section
->the_bfd_section
->name
;
1261 memaddr
= overlay_mapped_address (memaddr
, section
);
1262 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1263 memaddr
, len
, xfered_len
,
1265 table
->sections_end
,
1270 /* Try the executable files, if "trust-readonly-sections" is set. */
1271 if (readbuf
!= NULL
&& trust_readonly
)
1273 struct target_section
*secp
;
1274 struct target_section_table
*table
;
1276 secp
= target_section_by_addr (ops
, memaddr
);
1278 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1279 secp
->the_bfd_section
)
1282 table
= target_get_section_table (ops
);
1283 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1284 memaddr
, len
, xfered_len
,
1286 table
->sections_end
,
1291 /* If reading unavailable memory in the context of traceframes, and
1292 this address falls within a read-only section, fallback to
1293 reading from live memory. */
1294 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1296 VEC(mem_range_s
) *available
;
1298 /* If we fail to get the set of available memory, then the
1299 target does not support querying traceframe info, and so we
1300 attempt reading from the traceframe anyway (assuming the
1301 target implements the old QTro packet then). */
1302 if (traceframe_available_memory (&available
, memaddr
, len
))
1304 struct cleanup
*old_chain
;
1306 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1308 if (VEC_empty (mem_range_s
, available
)
1309 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1311 /* Don't read into the traceframe's available
1313 if (!VEC_empty (mem_range_s
, available
))
1315 LONGEST oldlen
= len
;
1317 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1318 gdb_assert (len
<= oldlen
);
1321 do_cleanups (old_chain
);
1323 /* This goes through the topmost target again. */
1324 res
= memory_xfer_live_readonly_partial (ops
, object
,
1327 if (res
== TARGET_XFER_OK
)
1328 return TARGET_XFER_OK
;
1331 /* No use trying further, we know some memory starting
1332 at MEMADDR isn't available. */
1334 return TARGET_XFER_E_UNAVAILABLE
;
1338 /* Don't try to read more than how much is available, in
1339 case the target implements the deprecated QTro packet to
1340 cater for older GDBs (the target's knowledge of read-only
1341 sections may be outdated by now). */
1342 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1344 do_cleanups (old_chain
);
1348 /* Try GDB's internal data cache. */
1349 region
= lookup_mem_region (memaddr
);
1350 /* region->hi == 0 means there's no upper bound. */
1351 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1354 reg_len
= region
->hi
- memaddr
;
1356 switch (region
->attrib
.mode
)
1359 if (writebuf
!= NULL
)
1360 return TARGET_XFER_E_IO
;
1364 if (readbuf
!= NULL
)
1365 return TARGET_XFER_E_IO
;
1369 /* We only support writing to flash during "load" for now. */
1370 if (writebuf
!= NULL
)
1371 error (_("Writing to flash memory forbidden in this context"));
1375 return TARGET_XFER_E_IO
;
1378 if (!ptid_equal (inferior_ptid
, null_ptid
))
1379 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1384 /* The dcache reads whole cache lines; that doesn't play well
1385 with reading from a trace buffer, because reading outside of
1386 the collected memory range fails. */
1387 && get_traceframe_number () == -1
1388 && (region
->attrib
.cache
1389 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1390 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1392 DCACHE
*dcache
= target_dcache_get_or_init ();
1395 if (readbuf
!= NULL
)
1396 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1398 /* FIXME drow/2006-08-09: If we're going to preserve const
1399 correctness dcache_xfer_memory should take readbuf and
1401 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1404 return TARGET_XFER_E_IO
;
1407 *xfered_len
= (ULONGEST
) l
;
1408 return TARGET_XFER_OK
;
1412 /* If none of those methods found the memory we wanted, fall back
1413 to a target partial transfer. Normally a single call to
1414 to_xfer_partial is enough; if it doesn't recognize an object
1415 it will call the to_xfer_partial of the next target down.
1416 But for memory this won't do. Memory is the only target
1417 object which can be read from more than one valid target.
1418 A core file, for instance, could have some of memory but
1419 delegate other bits to the target below it. So, we must
1420 manually try all targets. */
1422 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1425 /* Make sure the cache gets updated no matter what - if we are writing
1426 to the stack. Even if this write is not tagged as such, we still need
1427 to update the cache. */
1429 if (res
== TARGET_XFER_OK
1432 && target_dcache_init_p ()
1433 && !region
->attrib
.cache
1434 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1435 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1437 DCACHE
*dcache
= target_dcache_get ();
1439 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1442 /* If we still haven't got anything, return the last error. We
1447 /* Perform a partial memory transfer. For docs see target.h,
1450 static enum target_xfer_status
1451 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1452 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1453 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1455 enum target_xfer_status res
;
1457 /* Zero length requests are ok and require no work. */
1459 return TARGET_XFER_EOF
;
1461 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1462 breakpoint insns, thus hiding out from higher layers whether
1463 there are software breakpoints inserted in the code stream. */
1464 if (readbuf
!= NULL
)
1466 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1469 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1470 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1475 struct cleanup
*old_chain
;
1477 /* A large write request is likely to be partially satisfied
1478 by memory_xfer_partial_1. We will continually malloc
1479 and free a copy of the entire write request for breakpoint
1480 shadow handling even though we only end up writing a small
1481 subset of it. Cap writes to 4KB to mitigate this. */
1482 len
= min (4096, len
);
1484 buf
= xmalloc (len
);
1485 old_chain
= make_cleanup (xfree
, buf
);
1486 memcpy (buf
, writebuf
, len
);
1488 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1489 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1492 do_cleanups (old_chain
);
1499 restore_show_memory_breakpoints (void *arg
)
1501 show_memory_breakpoints
= (uintptr_t) arg
;
1505 make_show_memory_breakpoints_cleanup (int show
)
1507 int current
= show_memory_breakpoints
;
1509 show_memory_breakpoints
= show
;
1510 return make_cleanup (restore_show_memory_breakpoints
,
1511 (void *) (uintptr_t) current
);
1514 /* For docs see target.h, to_xfer_partial. */
1516 enum target_xfer_status
1517 target_xfer_partial (struct target_ops
*ops
,
1518 enum target_object object
, const char *annex
,
1519 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1520 ULONGEST offset
, ULONGEST len
,
1521 ULONGEST
*xfered_len
)
1523 enum target_xfer_status retval
;
1525 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1527 /* Transfer is done when LEN is zero. */
1529 return TARGET_XFER_EOF
;
1531 if (writebuf
&& !may_write_memory
)
1532 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1533 core_addr_to_string_nz (offset
), plongest (len
));
1537 /* If this is a memory transfer, let the memory-specific code
1538 have a look at it instead. Memory transfers are more
1540 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1541 || object
== TARGET_OBJECT_CODE_MEMORY
)
1542 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1543 writebuf
, offset
, len
, xfered_len
);
1544 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1546 /* Request the normal memory object from other layers. */
1547 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1551 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1552 writebuf
, offset
, len
, xfered_len
);
1556 const unsigned char *myaddr
= NULL
;
1558 fprintf_unfiltered (gdb_stdlog
,
1559 "%s:target_xfer_partial "
1560 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1563 (annex
? annex
: "(null)"),
1564 host_address_to_string (readbuf
),
1565 host_address_to_string (writebuf
),
1566 core_addr_to_string_nz (offset
),
1567 pulongest (len
), retval
,
1568 pulongest (*xfered_len
));
1574 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1578 fputs_unfiltered (", bytes =", gdb_stdlog
);
1579 for (i
= 0; i
< *xfered_len
; i
++)
1581 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1583 if (targetdebug
< 2 && i
> 0)
1585 fprintf_unfiltered (gdb_stdlog
, " ...");
1588 fprintf_unfiltered (gdb_stdlog
, "\n");
1591 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1595 fputc_unfiltered ('\n', gdb_stdlog
);
1598 /* Check implementations of to_xfer_partial update *XFERED_LEN
1599 properly. Do assertion after printing debug messages, so that we
1600 can find more clues on assertion failure from debugging messages. */
1601 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1602 gdb_assert (*xfered_len
> 0);
1607 /* Read LEN bytes of target memory at address MEMADDR, placing the
1608 results in GDB's memory at MYADDR. Returns either 0 for success or
1609 TARGET_XFER_E_IO if any error occurs.
1611 If an error occurs, no guarantee is made about the contents of the data at
1612 MYADDR. In particular, the caller should not depend upon partial reads
1613 filling the buffer with good data. There is no way for the caller to know
1614 how much good data might have been transfered anyway. Callers that can
1615 deal with partial reads should call target_read (which will retry until
1616 it makes no progress, and then return how much was transferred). */
1619 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1621 /* Dispatch to the topmost target, not the flattened current_target.
1622 Memory accesses check target->to_has_(all_)memory, and the
1623 flattened target doesn't inherit those. */
1624 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1625 myaddr
, memaddr
, len
) == len
)
1628 return TARGET_XFER_E_IO
;
1631 /* Like target_read_memory, but specify explicitly that this is a read
1632 from the target's raw memory. That is, this read bypasses the
1633 dcache, breakpoint shadowing, etc. */
1636 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1638 /* See comment in target_read_memory about why the request starts at
1639 current_target.beneath. */
1640 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1641 myaddr
, memaddr
, len
) == len
)
1644 return TARGET_XFER_E_IO
;
1647 /* Like target_read_memory, but specify explicitly that this is a read from
1648 the target's stack. This may trigger different cache behavior. */
1651 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1653 /* See comment in target_read_memory about why the request starts at
1654 current_target.beneath. */
1655 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1656 myaddr
, memaddr
, len
) == len
)
1659 return TARGET_XFER_E_IO
;
1662 /* Like target_read_memory, but specify explicitly that this is a read from
1663 the target's code. This may trigger different cache behavior. */
1666 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1668 /* See comment in target_read_memory about why the request starts at
1669 current_target.beneath. */
1670 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1671 myaddr
, memaddr
, len
) == len
)
1674 return TARGET_XFER_E_IO
;
1677 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1678 Returns either 0 for success or TARGET_XFER_E_IO if any
1679 error occurs. If an error occurs, no guarantee is made about how
1680 much data got written. Callers that can deal with partial writes
1681 should call target_write. */
1684 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1686 /* See comment in target_read_memory about why the request starts at
1687 current_target.beneath. */
1688 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1689 myaddr
, memaddr
, len
) == len
)
1692 return TARGET_XFER_E_IO
;
1695 /* Write LEN bytes from MYADDR to target raw memory at address
1696 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1697 if any error occurs. If an error occurs, no guarantee is made
1698 about how much data got written. Callers that can deal with
1699 partial writes should call target_write. */
1702 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1704 /* See comment in target_read_memory about why the request starts at
1705 current_target.beneath. */
1706 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1707 myaddr
, memaddr
, len
) == len
)
1710 return TARGET_XFER_E_IO
;
1713 /* Fetch the target's memory map. */
1716 target_memory_map (void)
1718 VEC(mem_region_s
) *result
;
1719 struct mem_region
*last_one
, *this_one
;
1721 struct target_ops
*t
;
1724 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1726 result
= current_target
.to_memory_map (¤t_target
);
1730 qsort (VEC_address (mem_region_s
, result
),
1731 VEC_length (mem_region_s
, result
),
1732 sizeof (struct mem_region
), mem_region_cmp
);
1734 /* Check that regions do not overlap. Simultaneously assign
1735 a numbering for the "mem" commands to use to refer to
1738 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1740 this_one
->number
= ix
;
1742 if (last_one
&& last_one
->hi
> this_one
->lo
)
1744 warning (_("Overlapping regions in memory map: ignoring"));
1745 VEC_free (mem_region_s
, result
);
1748 last_one
= this_one
;
1755 target_flash_erase (ULONGEST address
, LONGEST length
)
1758 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1759 hex_string (address
), phex (length
, 0));
1760 current_target
.to_flash_erase (¤t_target
, address
, length
);
1764 target_flash_done (void)
1767 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1768 current_target
.to_flash_done (¤t_target
);
1772 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1773 struct cmd_list_element
*c
, const char *value
)
1775 fprintf_filtered (file
,
1776 _("Mode for reading from readonly sections is %s.\n"),
1780 /* More generic transfers. */
1782 static enum target_xfer_status
1783 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1784 const char *annex
, gdb_byte
*readbuf
,
1785 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1786 ULONGEST
*xfered_len
)
1788 if (object
== TARGET_OBJECT_MEMORY
1789 && ops
->deprecated_xfer_memory
!= NULL
)
1790 /* If available, fall back to the target's
1791 "deprecated_xfer_memory" method. */
1796 if (writebuf
!= NULL
)
1798 void *buffer
= xmalloc (len
);
1799 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1801 memcpy (buffer
, writebuf
, len
);
1802 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1803 1/*write*/, NULL
, ops
);
1804 do_cleanups (cleanup
);
1806 if (readbuf
!= NULL
)
1807 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1808 0/*read*/, NULL
, ops
);
1811 *xfered_len
= (ULONGEST
) xfered
;
1812 return TARGET_XFER_E_IO
;
1814 else if (xfered
== 0 && errno
== 0)
1815 /* "deprecated_xfer_memory" uses 0, cross checked against
1816 ERRNO as one indication of an error. */
1817 return TARGET_XFER_EOF
;
1819 return TARGET_XFER_E_IO
;
1823 gdb_assert (ops
->beneath
!= NULL
);
1824 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1825 readbuf
, writebuf
, offset
, len
,
1830 /* Target vector read/write partial wrapper functions. */
1832 static enum target_xfer_status
1833 target_read_partial (struct target_ops
*ops
,
1834 enum target_object object
,
1835 const char *annex
, gdb_byte
*buf
,
1836 ULONGEST offset
, ULONGEST len
,
1837 ULONGEST
*xfered_len
)
1839 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
1843 static enum target_xfer_status
1844 target_write_partial (struct target_ops
*ops
,
1845 enum target_object object
,
1846 const char *annex
, const gdb_byte
*buf
,
1847 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
1849 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
1853 /* Wrappers to perform the full transfer. */
1855 /* For docs on target_read see target.h. */
1858 target_read (struct target_ops
*ops
,
1859 enum target_object object
,
1860 const char *annex
, gdb_byte
*buf
,
1861 ULONGEST offset
, LONGEST len
)
1865 while (xfered
< len
)
1867 ULONGEST xfered_len
;
1868 enum target_xfer_status status
;
1870 status
= target_read_partial (ops
, object
, annex
,
1871 (gdb_byte
*) buf
+ xfered
,
1872 offset
+ xfered
, len
- xfered
,
1875 /* Call an observer, notifying them of the xfer progress? */
1876 if (status
== TARGET_XFER_EOF
)
1878 else if (status
== TARGET_XFER_OK
)
1880 xfered
+= xfered_len
;
1890 /* Assuming that the entire [begin, end) range of memory cannot be
1891 read, try to read whatever subrange is possible to read.
1893 The function returns, in RESULT, either zero or one memory block.
1894 If there's a readable subrange at the beginning, it is completely
1895 read and returned. Any further readable subrange will not be read.
1896 Otherwise, if there's a readable subrange at the end, it will be
1897 completely read and returned. Any readable subranges before it
1898 (obviously, not starting at the beginning), will be ignored. In
1899 other cases -- either no readable subrange, or readable subrange(s)
1900 that is neither at the beginning, or end, nothing is returned.
1902 The purpose of this function is to handle a read across a boundary
1903 of accessible memory in a case when memory map is not available.
1904 The above restrictions are fine for this case, but will give
1905 incorrect results if the memory is 'patchy'. However, supporting
1906 'patchy' memory would require trying to read every single byte,
1907 and it seems unacceptable solution. Explicit memory map is
1908 recommended for this case -- and target_read_memory_robust will
1909 take care of reading multiple ranges then. */
1912 read_whatever_is_readable (struct target_ops
*ops
,
1913 ULONGEST begin
, ULONGEST end
,
1914 VEC(memory_read_result_s
) **result
)
1916 gdb_byte
*buf
= xmalloc (end
- begin
);
1917 ULONGEST current_begin
= begin
;
1918 ULONGEST current_end
= end
;
1920 memory_read_result_s r
;
1921 ULONGEST xfered_len
;
1923 /* If we previously failed to read 1 byte, nothing can be done here. */
1924 if (end
- begin
<= 1)
1930 /* Check that either first or the last byte is readable, and give up
1931 if not. This heuristic is meant to permit reading accessible memory
1932 at the boundary of accessible region. */
1933 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1934 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
1939 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1940 buf
+ (end
-begin
) - 1, end
- 1, 1,
1941 &xfered_len
) == TARGET_XFER_OK
)
1952 /* Loop invariant is that the [current_begin, current_end) was previously
1953 found to be not readable as a whole.
1955 Note loop condition -- if the range has 1 byte, we can't divide the range
1956 so there's no point trying further. */
1957 while (current_end
- current_begin
> 1)
1959 ULONGEST first_half_begin
, first_half_end
;
1960 ULONGEST second_half_begin
, second_half_end
;
1962 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
1966 first_half_begin
= current_begin
;
1967 first_half_end
= middle
;
1968 second_half_begin
= middle
;
1969 second_half_end
= current_end
;
1973 first_half_begin
= middle
;
1974 first_half_end
= current_end
;
1975 second_half_begin
= current_begin
;
1976 second_half_end
= middle
;
1979 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1980 buf
+ (first_half_begin
- begin
),
1982 first_half_end
- first_half_begin
);
1984 if (xfer
== first_half_end
- first_half_begin
)
1986 /* This half reads up fine. So, the error must be in the
1988 current_begin
= second_half_begin
;
1989 current_end
= second_half_end
;
1993 /* This half is not readable. Because we've tried one byte, we
1994 know some part of this half if actually redable. Go to the next
1995 iteration to divide again and try to read.
1997 We don't handle the other half, because this function only tries
1998 to read a single readable subrange. */
1999 current_begin
= first_half_begin
;
2000 current_end
= first_half_end
;
2006 /* The [begin, current_begin) range has been read. */
2008 r
.end
= current_begin
;
2013 /* The [current_end, end) range has been read. */
2014 LONGEST rlen
= end
- current_end
;
2016 r
.data
= xmalloc (rlen
);
2017 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2018 r
.begin
= current_end
;
2022 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2026 free_memory_read_result_vector (void *x
)
2028 VEC(memory_read_result_s
) *v
= x
;
2029 memory_read_result_s
*current
;
2032 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2034 xfree (current
->data
);
2036 VEC_free (memory_read_result_s
, v
);
2039 VEC(memory_read_result_s
) *
2040 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2042 VEC(memory_read_result_s
) *result
= 0;
2045 while (xfered
< len
)
2047 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2050 /* If there is no explicit region, a fake one should be created. */
2051 gdb_assert (region
);
2053 if (region
->hi
== 0)
2054 rlen
= len
- xfered
;
2056 rlen
= region
->hi
- offset
;
2058 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2060 /* Cannot read this region. Note that we can end up here only
2061 if the region is explicitly marked inaccessible, or
2062 'inaccessible-by-default' is in effect. */
2067 LONGEST to_read
= min (len
- xfered
, rlen
);
2068 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2070 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2071 (gdb_byte
*) buffer
,
2072 offset
+ xfered
, to_read
);
2073 /* Call an observer, notifying them of the xfer progress? */
2076 /* Got an error reading full chunk. See if maybe we can read
2079 read_whatever_is_readable (ops
, offset
+ xfered
,
2080 offset
+ xfered
+ to_read
, &result
);
2085 struct memory_read_result r
;
2087 r
.begin
= offset
+ xfered
;
2088 r
.end
= r
.begin
+ xfer
;
2089 VEC_safe_push (memory_read_result_s
, result
, &r
);
2099 /* An alternative to target_write with progress callbacks. */
2102 target_write_with_progress (struct target_ops
*ops
,
2103 enum target_object object
,
2104 const char *annex
, const gdb_byte
*buf
,
2105 ULONGEST offset
, LONGEST len
,
2106 void (*progress
) (ULONGEST
, void *), void *baton
)
2110 /* Give the progress callback a chance to set up. */
2112 (*progress
) (0, baton
);
2114 while (xfered
< len
)
2116 ULONGEST xfered_len
;
2117 enum target_xfer_status status
;
2119 status
= target_write_partial (ops
, object
, annex
,
2120 (gdb_byte
*) buf
+ xfered
,
2121 offset
+ xfered
, len
- xfered
,
2124 if (status
== TARGET_XFER_EOF
)
2126 if (TARGET_XFER_STATUS_ERROR_P (status
))
2129 gdb_assert (status
== TARGET_XFER_OK
);
2131 (*progress
) (xfered_len
, baton
);
2133 xfered
+= xfered_len
;
2139 /* For docs on target_write see target.h. */
2142 target_write (struct target_ops
*ops
,
2143 enum target_object object
,
2144 const char *annex
, const gdb_byte
*buf
,
2145 ULONGEST offset
, LONGEST len
)
2147 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2151 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2152 the size of the transferred data. PADDING additional bytes are
2153 available in *BUF_P. This is a helper function for
2154 target_read_alloc; see the declaration of that function for more
2158 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2159 const char *annex
, gdb_byte
**buf_p
, int padding
)
2161 size_t buf_alloc
, buf_pos
;
2164 /* This function does not have a length parameter; it reads the
2165 entire OBJECT). Also, it doesn't support objects fetched partly
2166 from one target and partly from another (in a different stratum,
2167 e.g. a core file and an executable). Both reasons make it
2168 unsuitable for reading memory. */
2169 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2171 /* Start by reading up to 4K at a time. The target will throttle
2172 this number down if necessary. */
2174 buf
= xmalloc (buf_alloc
);
2178 ULONGEST xfered_len
;
2179 enum target_xfer_status status
;
2181 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2182 buf_pos
, buf_alloc
- buf_pos
- padding
,
2185 if (status
== TARGET_XFER_EOF
)
2187 /* Read all there was. */
2194 else if (status
!= TARGET_XFER_OK
)
2196 /* An error occurred. */
2198 return TARGET_XFER_E_IO
;
2201 buf_pos
+= xfered_len
;
2203 /* If the buffer is filling up, expand it. */
2204 if (buf_alloc
< buf_pos
* 2)
2207 buf
= xrealloc (buf
, buf_alloc
);
2214 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2215 the size of the transferred data. See the declaration in "target.h"
2216 function for more information about the return value. */
2219 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2220 const char *annex
, gdb_byte
**buf_p
)
2222 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2225 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2226 returned as a string, allocated using xmalloc. If an error occurs
2227 or the transfer is unsupported, NULL is returned. Empty objects
2228 are returned as allocated but empty strings. A warning is issued
2229 if the result contains any embedded NUL bytes. */
2232 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2237 LONGEST i
, transferred
;
2239 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2240 bufstr
= (char *) buffer
;
2242 if (transferred
< 0)
2245 if (transferred
== 0)
2246 return xstrdup ("");
2248 bufstr
[transferred
] = 0;
2250 /* Check for embedded NUL bytes; but allow trailing NULs. */
2251 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2254 warning (_("target object %d, annex %s, "
2255 "contained unexpected null characters"),
2256 (int) object
, annex
? annex
: "(none)");
2263 /* Memory transfer methods. */
2266 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2269 /* This method is used to read from an alternate, non-current
2270 target. This read must bypass the overlay support (as symbols
2271 don't match this target), and GDB's internal cache (wrong cache
2272 for this target). */
2273 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2275 memory_error (TARGET_XFER_E_IO
, addr
);
2279 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2280 int len
, enum bfd_endian byte_order
)
2282 gdb_byte buf
[sizeof (ULONGEST
)];
2284 gdb_assert (len
<= sizeof (buf
));
2285 get_target_memory (ops
, addr
, buf
, len
);
2286 return extract_unsigned_integer (buf
, len
, byte_order
);
2292 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2293 struct bp_target_info
*bp_tgt
)
2295 if (!may_insert_breakpoints
)
2297 warning (_("May not insert breakpoints"));
2301 return current_target
.to_insert_breakpoint (¤t_target
,
2308 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2309 struct bp_target_info
*bp_tgt
)
2311 /* This is kind of a weird case to handle, but the permission might
2312 have been changed after breakpoints were inserted - in which case
2313 we should just take the user literally and assume that any
2314 breakpoints should be left in place. */
2315 if (!may_insert_breakpoints
)
2317 warning (_("May not remove breakpoints"));
2321 return current_target
.to_remove_breakpoint (¤t_target
,
2326 target_info (char *args
, int from_tty
)
2328 struct target_ops
*t
;
2329 int has_all_mem
= 0;
2331 if (symfile_objfile
!= NULL
)
2332 printf_unfiltered (_("Symbols from \"%s\".\n"),
2333 objfile_name (symfile_objfile
));
2335 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2337 if (!(*t
->to_has_memory
) (t
))
2340 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2343 printf_unfiltered (_("\tWhile running this, "
2344 "GDB does not access memory from...\n"));
2345 printf_unfiltered ("%s:\n", t
->to_longname
);
2346 (t
->to_files_info
) (t
);
2347 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2351 /* This function is called before any new inferior is created, e.g.
2352 by running a program, attaching, or connecting to a target.
2353 It cleans up any state from previous invocations which might
2354 change between runs. This is a subset of what target_preopen
2355 resets (things which might change between targets). */
2358 target_pre_inferior (int from_tty
)
2360 /* Clear out solib state. Otherwise the solib state of the previous
2361 inferior might have survived and is entirely wrong for the new
2362 target. This has been observed on GNU/Linux using glibc 2.3. How
2374 Cannot access memory at address 0xdeadbeef
2377 /* In some OSs, the shared library list is the same/global/shared
2378 across inferiors. If code is shared between processes, so are
2379 memory regions and features. */
2380 if (!gdbarch_has_global_solist (target_gdbarch ()))
2382 no_shared_libraries (NULL
, from_tty
);
2384 invalidate_target_mem_regions ();
2386 target_clear_description ();
2389 agent_capability_invalidate ();
2392 /* Callback for iterate_over_inferiors. Gets rid of the given
2396 dispose_inferior (struct inferior
*inf
, void *args
)
2398 struct thread_info
*thread
;
2400 thread
= any_thread_of_process (inf
->pid
);
2403 switch_to_thread (thread
->ptid
);
2405 /* Core inferiors actually should be detached, not killed. */
2406 if (target_has_execution
)
2409 target_detach (NULL
, 0);
2415 /* This is to be called by the open routine before it does
2419 target_preopen (int from_tty
)
2423 if (have_inferiors ())
2426 || !have_live_inferiors ()
2427 || query (_("A program is being debugged already. Kill it? ")))
2428 iterate_over_inferiors (dispose_inferior
, NULL
);
2430 error (_("Program not killed."));
2433 /* Calling target_kill may remove the target from the stack. But if
2434 it doesn't (which seems like a win for UDI), remove it now. */
2435 /* Leave the exec target, though. The user may be switching from a
2436 live process to a core of the same program. */
2437 pop_all_targets_above (file_stratum
);
2439 target_pre_inferior (from_tty
);
2442 /* Detach a target after doing deferred register stores. */
2445 target_detach (const char *args
, int from_tty
)
2447 struct target_ops
* t
;
2449 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2450 /* Don't remove global breakpoints here. They're removed on
2451 disconnection from the target. */
2454 /* If we're in breakpoints-always-inserted mode, have to remove
2455 them before detaching. */
2456 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2458 prepare_for_detach ();
2460 current_target
.to_detach (¤t_target
, args
, from_tty
);
2462 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2467 target_disconnect (char *args
, int from_tty
)
2469 /* If we're in breakpoints-always-inserted mode or if breakpoints
2470 are global across processes, we have to remove them before
2472 remove_breakpoints ();
2475 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2477 current_target
.to_disconnect (¤t_target
, args
, from_tty
);
2481 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2483 struct target_ops
*t
;
2484 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2489 char *status_string
;
2490 char *options_string
;
2492 status_string
= target_waitstatus_to_string (status
);
2493 options_string
= target_options_to_string (options
);
2494 fprintf_unfiltered (gdb_stdlog
,
2495 "target_wait (%d, status, options={%s})"
2497 ptid_get_pid (ptid
), options_string
,
2498 ptid_get_pid (retval
), status_string
);
2499 xfree (status_string
);
2500 xfree (options_string
);
2507 target_pid_to_str (ptid_t ptid
)
2509 return (*current_target
.to_pid_to_str
) (¤t_target
, ptid
);
2513 target_thread_name (struct thread_info
*info
)
2515 return current_target
.to_thread_name (¤t_target
, info
);
2519 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2521 struct target_ops
*t
;
2523 target_dcache_invalidate ();
2525 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2527 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2528 ptid_get_pid (ptid
),
2529 step
? "step" : "continue",
2530 gdb_signal_to_name (signal
));
2532 registers_changed_ptid (ptid
);
2533 set_executing (ptid
, 1);
2534 set_running (ptid
, 1);
2535 clear_inline_frame_state (ptid
);
2539 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2545 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2548 for (i
= 0; i
< numsigs
; i
++)
2549 if (pass_signals
[i
])
2550 fprintf_unfiltered (gdb_stdlog
, " %s",
2551 gdb_signal_to_name (i
));
2553 fprintf_unfiltered (gdb_stdlog
, " })\n");
2556 (*current_target
.to_pass_signals
) (¤t_target
, numsigs
, pass_signals
);
2560 target_program_signals (int numsigs
, unsigned char *program_signals
)
2566 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2569 for (i
= 0; i
< numsigs
; i
++)
2570 if (program_signals
[i
])
2571 fprintf_unfiltered (gdb_stdlog
, " %s",
2572 gdb_signal_to_name (i
));
2574 fprintf_unfiltered (gdb_stdlog
, " })\n");
2577 (*current_target
.to_program_signals
) (¤t_target
,
2578 numsigs
, program_signals
);
2582 default_follow_fork (struct target_ops
*self
, int follow_child
,
2585 /* Some target returned a fork event, but did not know how to follow it. */
2586 internal_error (__FILE__
, __LINE__
,
2587 _("could not find a target to follow fork"));
2590 /* Look through the list of possible targets for a target that can
2594 target_follow_fork (int follow_child
, int detach_fork
)
2596 int retval
= current_target
.to_follow_fork (¤t_target
,
2597 follow_child
, detach_fork
);
2600 fprintf_unfiltered (gdb_stdlog
,
2601 "target_follow_fork (%d, %d) = %d\n",
2602 follow_child
, detach_fork
, retval
);
2607 default_mourn_inferior (struct target_ops
*self
)
2609 internal_error (__FILE__
, __LINE__
,
2610 _("could not find a target to follow mourn inferior"));
2614 target_mourn_inferior (void)
2616 current_target
.to_mourn_inferior (¤t_target
);
2618 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2620 /* We no longer need to keep handles on any of the object files.
2621 Make sure to release them to avoid unnecessarily locking any
2622 of them while we're not actually debugging. */
2623 bfd_cache_close_all ();
2626 /* Look for a target which can describe architectural features, starting
2627 from TARGET. If we find one, return its description. */
2629 const struct target_desc
*
2630 target_read_description (struct target_ops
*target
)
2632 return target
->to_read_description (target
);
2635 /* This implements a basic search of memory, reading target memory and
2636 performing the search here (as opposed to performing the search in on the
2637 target side with, for example, gdbserver). */
2640 simple_search_memory (struct target_ops
*ops
,
2641 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2642 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2643 CORE_ADDR
*found_addrp
)
2645 /* NOTE: also defined in find.c testcase. */
2646 #define SEARCH_CHUNK_SIZE 16000
2647 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2648 /* Buffer to hold memory contents for searching. */
2649 gdb_byte
*search_buf
;
2650 unsigned search_buf_size
;
2651 struct cleanup
*old_cleanups
;
2653 search_buf_size
= chunk_size
+ pattern_len
- 1;
2655 /* No point in trying to allocate a buffer larger than the search space. */
2656 if (search_space_len
< search_buf_size
)
2657 search_buf_size
= search_space_len
;
2659 search_buf
= malloc (search_buf_size
);
2660 if (search_buf
== NULL
)
2661 error (_("Unable to allocate memory to perform the search."));
2662 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2664 /* Prime the search buffer. */
2666 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2667 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2669 warning (_("Unable to access %s bytes of target "
2670 "memory at %s, halting search."),
2671 pulongest (search_buf_size
), hex_string (start_addr
));
2672 do_cleanups (old_cleanups
);
2676 /* Perform the search.
2678 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2679 When we've scanned N bytes we copy the trailing bytes to the start and
2680 read in another N bytes. */
2682 while (search_space_len
>= pattern_len
)
2684 gdb_byte
*found_ptr
;
2685 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2687 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2688 pattern
, pattern_len
);
2690 if (found_ptr
!= NULL
)
2692 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2694 *found_addrp
= found_addr
;
2695 do_cleanups (old_cleanups
);
2699 /* Not found in this chunk, skip to next chunk. */
2701 /* Don't let search_space_len wrap here, it's unsigned. */
2702 if (search_space_len
>= chunk_size
)
2703 search_space_len
-= chunk_size
;
2705 search_space_len
= 0;
2707 if (search_space_len
>= pattern_len
)
2709 unsigned keep_len
= search_buf_size
- chunk_size
;
2710 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2713 /* Copy the trailing part of the previous iteration to the front
2714 of the buffer for the next iteration. */
2715 gdb_assert (keep_len
== pattern_len
- 1);
2716 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2718 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2720 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2721 search_buf
+ keep_len
, read_addr
,
2722 nr_to_read
) != nr_to_read
)
2724 warning (_("Unable to access %s bytes of target "
2725 "memory at %s, halting search."),
2726 plongest (nr_to_read
),
2727 hex_string (read_addr
));
2728 do_cleanups (old_cleanups
);
2732 start_addr
+= chunk_size
;
2738 do_cleanups (old_cleanups
);
2742 /* Default implementation of memory-searching. */
2745 default_search_memory (struct target_ops
*self
,
2746 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2747 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2748 CORE_ADDR
*found_addrp
)
2750 /* Start over from the top of the target stack. */
2751 return simple_search_memory (current_target
.beneath
,
2752 start_addr
, search_space_len
,
2753 pattern
, pattern_len
, found_addrp
);
2756 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2757 sequence of bytes in PATTERN with length PATTERN_LEN.
2759 The result is 1 if found, 0 if not found, and -1 if there was an error
2760 requiring halting of the search (e.g. memory read error).
2761 If the pattern is found the address is recorded in FOUND_ADDRP. */
2764 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2765 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2766 CORE_ADDR
*found_addrp
)
2771 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2772 hex_string (start_addr
));
2774 found
= current_target
.to_search_memory (¤t_target
, start_addr
,
2776 pattern
, pattern_len
, found_addrp
);
2779 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2784 /* Look through the currently pushed targets. If none of them will
2785 be able to restart the currently running process, issue an error
2789 target_require_runnable (void)
2791 struct target_ops
*t
;
2793 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2795 /* If this target knows how to create a new program, then
2796 assume we will still be able to after killing the current
2797 one. Either killing and mourning will not pop T, or else
2798 find_default_run_target will find it again. */
2799 if (t
->to_create_inferior
!= NULL
)
2802 /* Do not worry about thread_stratum targets that can not
2803 create inferiors. Assume they will be pushed again if
2804 necessary, and continue to the process_stratum. */
2805 if (t
->to_stratum
== thread_stratum
2806 || t
->to_stratum
== arch_stratum
)
2809 error (_("The \"%s\" target does not support \"run\". "
2810 "Try \"help target\" or \"continue\"."),
2814 /* This function is only called if the target is running. In that
2815 case there should have been a process_stratum target and it
2816 should either know how to create inferiors, or not... */
2817 internal_error (__FILE__
, __LINE__
, _("No targets found"));
2820 /* Look through the list of possible targets for a target that can
2821 execute a run or attach command without any other data. This is
2822 used to locate the default process stratum.
2824 If DO_MESG is not NULL, the result is always valid (error() is
2825 called for errors); else, return NULL on error. */
2827 static struct target_ops
*
2828 find_default_run_target (char *do_mesg
)
2830 struct target_ops
**t
;
2831 struct target_ops
*runable
= NULL
;
2836 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2839 if ((*t
)->to_can_run
!= delegate_can_run
&& target_can_run (*t
))
2849 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
2858 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
2860 struct target_ops
*t
;
2862 t
= find_default_run_target ("attach");
2863 (t
->to_attach
) (t
, args
, from_tty
);
2868 find_default_create_inferior (struct target_ops
*ops
,
2869 char *exec_file
, char *allargs
, char **env
,
2872 struct target_ops
*t
;
2874 t
= find_default_run_target ("run");
2875 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
2880 find_default_can_async_p (struct target_ops
*ignore
)
2882 struct target_ops
*t
;
2884 /* This may be called before the target is pushed on the stack;
2885 look for the default process stratum. If there's none, gdb isn't
2886 configured with a native debugger, and target remote isn't
2888 t
= find_default_run_target (NULL
);
2889 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
2890 return (t
->to_can_async_p
) (t
);
2895 find_default_is_async_p (struct target_ops
*ignore
)
2897 struct target_ops
*t
;
2899 /* This may be called before the target is pushed on the stack;
2900 look for the default process stratum. If there's none, gdb isn't
2901 configured with a native debugger, and target remote isn't
2903 t
= find_default_run_target (NULL
);
2904 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
2905 return (t
->to_is_async_p
) (t
);
2910 find_default_supports_non_stop (struct target_ops
*self
)
2912 struct target_ops
*t
;
2914 t
= find_default_run_target (NULL
);
2915 if (t
&& t
->to_supports_non_stop
)
2916 return (t
->to_supports_non_stop
) (t
);
2921 target_supports_non_stop (void)
2923 struct target_ops
*t
;
2925 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
2926 if (t
->to_supports_non_stop
)
2927 return t
->to_supports_non_stop (t
);
2932 /* Implement the "info proc" command. */
2935 target_info_proc (char *args
, enum info_proc_what what
)
2937 struct target_ops
*t
;
2939 /* If we're already connected to something that can get us OS
2940 related data, use it. Otherwise, try using the native
2942 if (current_target
.to_stratum
>= process_stratum
)
2943 t
= current_target
.beneath
;
2945 t
= find_default_run_target (NULL
);
2947 for (; t
!= NULL
; t
= t
->beneath
)
2949 if (t
->to_info_proc
!= NULL
)
2951 t
->to_info_proc (t
, args
, what
);
2954 fprintf_unfiltered (gdb_stdlog
,
2955 "target_info_proc (\"%s\", %d)\n", args
, what
);
2965 find_default_supports_disable_randomization (struct target_ops
*self
)
2967 struct target_ops
*t
;
2969 t
= find_default_run_target (NULL
);
2970 if (t
&& t
->to_supports_disable_randomization
)
2971 return (t
->to_supports_disable_randomization
) (t
);
2976 target_supports_disable_randomization (void)
2978 struct target_ops
*t
;
2980 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
2981 if (t
->to_supports_disable_randomization
)
2982 return t
->to_supports_disable_randomization (t
);
2988 target_get_osdata (const char *type
)
2990 struct target_ops
*t
;
2992 /* If we're already connected to something that can get us OS
2993 related data, use it. Otherwise, try using the native
2995 if (current_target
.to_stratum
>= process_stratum
)
2996 t
= current_target
.beneath
;
2998 t
= find_default_run_target ("get OS data");
3003 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3006 /* Determine the current address space of thread PTID. */
3008 struct address_space
*
3009 target_thread_address_space (ptid_t ptid
)
3011 struct address_space
*aspace
;
3012 struct inferior
*inf
;
3013 struct target_ops
*t
;
3015 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3017 if (t
->to_thread_address_space
!= NULL
)
3019 aspace
= t
->to_thread_address_space (t
, ptid
);
3020 gdb_assert (aspace
);
3023 fprintf_unfiltered (gdb_stdlog
,
3024 "target_thread_address_space (%s) = %d\n",
3025 target_pid_to_str (ptid
),
3026 address_space_num (aspace
));
3031 /* Fall-back to the "main" address space of the inferior. */
3032 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3034 if (inf
== NULL
|| inf
->aspace
== NULL
)
3035 internal_error (__FILE__
, __LINE__
,
3036 _("Can't determine the current "
3037 "address space of thread %s\n"),
3038 target_pid_to_str (ptid
));
3044 /* Target file operations. */
3046 static struct target_ops
*
3047 default_fileio_target (void)
3049 /* If we're already connected to something that can perform
3050 file I/O, use it. Otherwise, try using the native target. */
3051 if (current_target
.to_stratum
>= process_stratum
)
3052 return current_target
.beneath
;
3054 return find_default_run_target ("file I/O");
3057 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3058 target file descriptor, or -1 if an error occurs (and set
3061 target_fileio_open (const char *filename
, int flags
, int mode
,
3064 struct target_ops
*t
;
3066 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3068 if (t
->to_fileio_open
!= NULL
)
3070 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3073 fprintf_unfiltered (gdb_stdlog
,
3074 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3075 filename
, flags
, mode
,
3076 fd
, fd
!= -1 ? 0 : *target_errno
);
3081 *target_errno
= FILEIO_ENOSYS
;
3085 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3086 Return the number of bytes written, or -1 if an error occurs
3087 (and set *TARGET_ERRNO). */
3089 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3090 ULONGEST offset
, int *target_errno
)
3092 struct target_ops
*t
;
3094 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3096 if (t
->to_fileio_pwrite
!= NULL
)
3098 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3102 fprintf_unfiltered (gdb_stdlog
,
3103 "target_fileio_pwrite (%d,...,%d,%s) "
3105 fd
, len
, pulongest (offset
),
3106 ret
, ret
!= -1 ? 0 : *target_errno
);
3111 *target_errno
= FILEIO_ENOSYS
;
3115 /* Read up to LEN bytes FD on the target into READ_BUF.
3116 Return the number of bytes read, or -1 if an error occurs
3117 (and set *TARGET_ERRNO). */
3119 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3120 ULONGEST offset
, int *target_errno
)
3122 struct target_ops
*t
;
3124 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3126 if (t
->to_fileio_pread
!= NULL
)
3128 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3132 fprintf_unfiltered (gdb_stdlog
,
3133 "target_fileio_pread (%d,...,%d,%s) "
3135 fd
, len
, pulongest (offset
),
3136 ret
, ret
!= -1 ? 0 : *target_errno
);
3141 *target_errno
= FILEIO_ENOSYS
;
3145 /* Close FD on the target. Return 0, or -1 if an error occurs
3146 (and set *TARGET_ERRNO). */
3148 target_fileio_close (int fd
, int *target_errno
)
3150 struct target_ops
*t
;
3152 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3154 if (t
->to_fileio_close
!= NULL
)
3156 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3159 fprintf_unfiltered (gdb_stdlog
,
3160 "target_fileio_close (%d) = %d (%d)\n",
3161 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3166 *target_errno
= FILEIO_ENOSYS
;
3170 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3171 occurs (and set *TARGET_ERRNO). */
3173 target_fileio_unlink (const char *filename
, int *target_errno
)
3175 struct target_ops
*t
;
3177 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3179 if (t
->to_fileio_unlink
!= NULL
)
3181 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3184 fprintf_unfiltered (gdb_stdlog
,
3185 "target_fileio_unlink (%s) = %d (%d)\n",
3186 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3191 *target_errno
= FILEIO_ENOSYS
;
3195 /* Read value of symbolic link FILENAME on the target. Return a
3196 null-terminated string allocated via xmalloc, or NULL if an error
3197 occurs (and set *TARGET_ERRNO). */
3199 target_fileio_readlink (const char *filename
, int *target_errno
)
3201 struct target_ops
*t
;
3203 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3205 if (t
->to_fileio_readlink
!= NULL
)
3207 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3210 fprintf_unfiltered (gdb_stdlog
,
3211 "target_fileio_readlink (%s) = %s (%d)\n",
3212 filename
, ret
? ret
: "(nil)",
3213 ret
? 0 : *target_errno
);
3218 *target_errno
= FILEIO_ENOSYS
;
3223 target_fileio_close_cleanup (void *opaque
)
3225 int fd
= *(int *) opaque
;
3228 target_fileio_close (fd
, &target_errno
);
3231 /* Read target file FILENAME. Store the result in *BUF_P and
3232 return the size of the transferred data. PADDING additional bytes are
3233 available in *BUF_P. This is a helper function for
3234 target_fileio_read_alloc; see the declaration of that function for more
3238 target_fileio_read_alloc_1 (const char *filename
,
3239 gdb_byte
**buf_p
, int padding
)
3241 struct cleanup
*close_cleanup
;
3242 size_t buf_alloc
, buf_pos
;
3248 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3252 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3254 /* Start by reading up to 4K at a time. The target will throttle
3255 this number down if necessary. */
3257 buf
= xmalloc (buf_alloc
);
3261 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3262 buf_alloc
- buf_pos
- padding
, buf_pos
,
3266 /* An error occurred. */
3267 do_cleanups (close_cleanup
);
3273 /* Read all there was. */
3274 do_cleanups (close_cleanup
);
3284 /* If the buffer is filling up, expand it. */
3285 if (buf_alloc
< buf_pos
* 2)
3288 buf
= xrealloc (buf
, buf_alloc
);
3295 /* Read target file FILENAME. Store the result in *BUF_P and return
3296 the size of the transferred data. See the declaration in "target.h"
3297 function for more information about the return value. */
3300 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3302 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3305 /* Read target file FILENAME. The result is NUL-terminated and
3306 returned as a string, allocated using xmalloc. If an error occurs
3307 or the transfer is unsupported, NULL is returned. Empty objects
3308 are returned as allocated but empty strings. A warning is issued
3309 if the result contains any embedded NUL bytes. */
3312 target_fileio_read_stralloc (const char *filename
)
3316 LONGEST i
, transferred
;
3318 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3319 bufstr
= (char *) buffer
;
3321 if (transferred
< 0)
3324 if (transferred
== 0)
3325 return xstrdup ("");
3327 bufstr
[transferred
] = 0;
3329 /* Check for embedded NUL bytes; but allow trailing NULs. */
3330 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3333 warning (_("target file %s "
3334 "contained unexpected null characters"),
3344 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3345 CORE_ADDR addr
, int len
)
3347 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3351 default_watchpoint_addr_within_range (struct target_ops
*target
,
3353 CORE_ADDR start
, int length
)
3355 return addr
>= start
&& addr
< start
+ length
;
3358 static struct gdbarch
*
3359 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3361 return target_gdbarch ();
3371 * Find the next target down the stack from the specified target.
3375 find_target_beneath (struct target_ops
*t
)
3383 find_target_at (enum strata stratum
)
3385 struct target_ops
*t
;
3387 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3388 if (t
->to_stratum
== stratum
)
3395 /* The inferior process has died. Long live the inferior! */
3398 generic_mourn_inferior (void)
3402 ptid
= inferior_ptid
;
3403 inferior_ptid
= null_ptid
;
3405 /* Mark breakpoints uninserted in case something tries to delete a
3406 breakpoint while we delete the inferior's threads (which would
3407 fail, since the inferior is long gone). */
3408 mark_breakpoints_out ();
3410 if (!ptid_equal (ptid
, null_ptid
))
3412 int pid
= ptid_get_pid (ptid
);
3413 exit_inferior (pid
);
3416 /* Note this wipes step-resume breakpoints, so needs to be done
3417 after exit_inferior, which ends up referencing the step-resume
3418 breakpoints through clear_thread_inferior_resources. */
3419 breakpoint_init_inferior (inf_exited
);
3421 registers_changed ();
3423 reopen_exec_file ();
3424 reinit_frame_cache ();
3426 if (deprecated_detach_hook
)
3427 deprecated_detach_hook ();
3430 /* Convert a normal process ID to a string. Returns the string in a
3434 normal_pid_to_str (ptid_t ptid
)
3436 static char buf
[32];
3438 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3443 default_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3445 return normal_pid_to_str (ptid
);
3448 /* Error-catcher for target_find_memory_regions. */
3450 dummy_find_memory_regions (struct target_ops
*self
,
3451 find_memory_region_ftype ignore1
, void *ignore2
)
3453 error (_("Command not implemented for this target."));
3457 /* Error-catcher for target_make_corefile_notes. */
3459 dummy_make_corefile_notes (struct target_ops
*self
,
3460 bfd
*ignore1
, int *ignore2
)
3462 error (_("Command not implemented for this target."));
3466 /* Set up the handful of non-empty slots needed by the dummy target
3470 init_dummy_target (void)
3472 dummy_target
.to_shortname
= "None";
3473 dummy_target
.to_longname
= "None";
3474 dummy_target
.to_doc
= "";
3475 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3476 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3477 dummy_target
.to_supports_disable_randomization
3478 = find_default_supports_disable_randomization
;
3479 dummy_target
.to_stratum
= dummy_stratum
;
3480 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3481 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3482 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3483 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3484 dummy_target
.to_has_execution
3485 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3486 dummy_target
.to_magic
= OPS_MAGIC
;
3488 install_dummy_methods (&dummy_target
);
3492 debug_to_open (char *args
, int from_tty
)
3494 debug_target
.to_open (args
, from_tty
);
3496 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3500 target_close (struct target_ops
*targ
)
3502 gdb_assert (!target_is_pushed (targ
));
3504 if (targ
->to_xclose
!= NULL
)
3505 targ
->to_xclose (targ
);
3506 else if (targ
->to_close
!= NULL
)
3507 targ
->to_close (targ
);
3510 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3514 target_attach (char *args
, int from_tty
)
3516 current_target
.to_attach (¤t_target
, args
, from_tty
);
3518 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3523 target_thread_alive (ptid_t ptid
)
3527 retval
= current_target
.to_thread_alive (¤t_target
, ptid
);
3529 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3530 ptid_get_pid (ptid
), retval
);
3536 target_find_new_threads (void)
3538 current_target
.to_find_new_threads (¤t_target
);
3540 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3544 target_stop (ptid_t ptid
)
3548 warning (_("May not interrupt or stop the target, ignoring attempt"));
3552 (*current_target
.to_stop
) (¤t_target
, ptid
);
3556 debug_to_post_attach (struct target_ops
*self
, int pid
)
3558 debug_target
.to_post_attach (&debug_target
, pid
);
3560 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3563 /* Concatenate ELEM to LIST, a comma separate list, and return the
3564 result. The LIST incoming argument is released. */
3567 str_comma_list_concat_elem (char *list
, const char *elem
)
3570 return xstrdup (elem
);
3572 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3575 /* Helper for target_options_to_string. If OPT is present in
3576 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3577 Returns the new resulting string. OPT is removed from
3581 do_option (int *target_options
, char *ret
,
3582 int opt
, char *opt_str
)
3584 if ((*target_options
& opt
) != 0)
3586 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3587 *target_options
&= ~opt
;
3594 target_options_to_string (int target_options
)
3598 #define DO_TARG_OPTION(OPT) \
3599 ret = do_option (&target_options, ret, OPT, #OPT)
3601 DO_TARG_OPTION (TARGET_WNOHANG
);
3603 if (target_options
!= 0)
3604 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3612 debug_print_register (const char * func
,
3613 struct regcache
*regcache
, int regno
)
3615 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3617 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3618 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3619 && gdbarch_register_name (gdbarch
, regno
) != NULL
3620 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3621 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3622 gdbarch_register_name (gdbarch
, regno
));
3624 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3625 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3627 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3628 int i
, size
= register_size (gdbarch
, regno
);
3629 gdb_byte buf
[MAX_REGISTER_SIZE
];
3631 regcache_raw_collect (regcache
, regno
, buf
);
3632 fprintf_unfiltered (gdb_stdlog
, " = ");
3633 for (i
= 0; i
< size
; i
++)
3635 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3637 if (size
<= sizeof (LONGEST
))
3639 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3641 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3642 core_addr_to_string_nz (val
), plongest (val
));
3645 fprintf_unfiltered (gdb_stdlog
, "\n");
3649 target_fetch_registers (struct regcache
*regcache
, int regno
)
3651 current_target
.to_fetch_registers (¤t_target
, regcache
, regno
);
3653 debug_print_register ("target_fetch_registers", regcache
, regno
);
3657 target_store_registers (struct regcache
*regcache
, int regno
)
3659 struct target_ops
*t
;
3661 if (!may_write_registers
)
3662 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3664 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3667 debug_print_register ("target_store_registers", regcache
, regno
);
3672 target_core_of_thread (ptid_t ptid
)
3674 int retval
= current_target
.to_core_of_thread (¤t_target
, ptid
);
3677 fprintf_unfiltered (gdb_stdlog
,
3678 "target_core_of_thread (%d) = %d\n",
3679 ptid_get_pid (ptid
), retval
);
3684 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3686 int retval
= current_target
.to_verify_memory (¤t_target
,
3687 data
, memaddr
, size
);
3690 fprintf_unfiltered (gdb_stdlog
,
3691 "target_verify_memory (%s, %s) = %d\n",
3692 paddress (target_gdbarch (), memaddr
),
3698 /* The documentation for this function is in its prototype declaration in
3702 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3706 ret
= current_target
.to_insert_mask_watchpoint (¤t_target
,
3710 fprintf_unfiltered (gdb_stdlog
, "\
3711 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3712 core_addr_to_string (addr
),
3713 core_addr_to_string (mask
), rw
, ret
);
3718 /* The documentation for this function is in its prototype declaration in
3722 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3726 ret
= current_target
.to_remove_mask_watchpoint (¤t_target
,
3730 fprintf_unfiltered (gdb_stdlog
, "\
3731 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3732 core_addr_to_string (addr
),
3733 core_addr_to_string (mask
), rw
, ret
);
3738 /* The documentation for this function is in its prototype declaration
3742 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
3744 return current_target
.to_masked_watch_num_registers (¤t_target
,
3748 /* The documentation for this function is in its prototype declaration
3752 target_ranged_break_num_registers (void)
3754 return current_target
.to_ranged_break_num_registers (¤t_target
);
3759 struct btrace_target_info
*
3760 target_enable_btrace (ptid_t ptid
)
3762 return current_target
.to_enable_btrace (¤t_target
, ptid
);
3768 target_disable_btrace (struct btrace_target_info
*btinfo
)
3770 current_target
.to_disable_btrace (¤t_target
, btinfo
);
3776 target_teardown_btrace (struct btrace_target_info
*btinfo
)
3778 current_target
.to_teardown_btrace (¤t_target
, btinfo
);
3784 target_read_btrace (VEC (btrace_block_s
) **btrace
,
3785 struct btrace_target_info
*btinfo
,
3786 enum btrace_read_type type
)
3788 return current_target
.to_read_btrace (¤t_target
, btrace
, btinfo
, type
);
3794 target_stop_recording (void)
3796 current_target
.to_stop_recording (¤t_target
);
3802 target_info_record (void)
3804 struct target_ops
*t
;
3806 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3807 if (t
->to_info_record
!= NULL
)
3809 t
->to_info_record (t
);
3819 target_save_record (const char *filename
)
3821 current_target
.to_save_record (¤t_target
, filename
);
3827 target_supports_delete_record (void)
3829 struct target_ops
*t
;
3831 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3832 if (t
->to_delete_record
!= NULL
)
3841 target_delete_record (void)
3843 current_target
.to_delete_record (¤t_target
);
3849 target_record_is_replaying (void)
3851 return current_target
.to_record_is_replaying (¤t_target
);
3857 target_goto_record_begin (void)
3859 current_target
.to_goto_record_begin (¤t_target
);
3865 target_goto_record_end (void)
3867 current_target
.to_goto_record_end (¤t_target
);
3873 target_goto_record (ULONGEST insn
)
3875 current_target
.to_goto_record (¤t_target
, insn
);
3881 target_insn_history (int size
, int flags
)
3883 current_target
.to_insn_history (¤t_target
, size
, flags
);
3889 target_insn_history_from (ULONGEST from
, int size
, int flags
)
3891 current_target
.to_insn_history_from (¤t_target
, from
, size
, flags
);
3897 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
3899 current_target
.to_insn_history_range (¤t_target
, begin
, end
, flags
);
3905 target_call_history (int size
, int flags
)
3907 current_target
.to_call_history (¤t_target
, size
, flags
);
3913 target_call_history_from (ULONGEST begin
, int size
, int flags
)
3915 current_target
.to_call_history_from (¤t_target
, begin
, size
, flags
);
3921 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
3923 current_target
.to_call_history_range (¤t_target
, begin
, end
, flags
);
3927 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
3929 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
3931 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
3936 const struct frame_unwind
*
3937 target_get_unwinder (void)
3939 struct target_ops
*t
;
3941 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3942 if (t
->to_get_unwinder
!= NULL
)
3943 return t
->to_get_unwinder
;
3950 const struct frame_unwind
*
3951 target_get_tailcall_unwinder (void)
3953 struct target_ops
*t
;
3955 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3956 if (t
->to_get_tailcall_unwinder
!= NULL
)
3957 return t
->to_get_tailcall_unwinder
;
3965 forward_target_decr_pc_after_break (struct target_ops
*ops
,
3966 struct gdbarch
*gdbarch
)
3968 for (; ops
!= NULL
; ops
= ops
->beneath
)
3969 if (ops
->to_decr_pc_after_break
!= NULL
)
3970 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
3972 return gdbarch_decr_pc_after_break (gdbarch
);
3978 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
3980 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
3984 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
3985 int write
, struct mem_attrib
*attrib
,
3986 struct target_ops
*target
)
3990 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
3993 fprintf_unfiltered (gdb_stdlog
,
3994 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
3995 paddress (target_gdbarch (), memaddr
), len
,
3996 write
? "write" : "read", retval
);
4002 fputs_unfiltered (", bytes =", gdb_stdlog
);
4003 for (i
= 0; i
< retval
; i
++)
4005 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4007 if (targetdebug
< 2 && i
> 0)
4009 fprintf_unfiltered (gdb_stdlog
, " ...");
4012 fprintf_unfiltered (gdb_stdlog
, "\n");
4015 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4019 fputc_unfiltered ('\n', gdb_stdlog
);
4025 debug_to_files_info (struct target_ops
*target
)
4027 debug_target
.to_files_info (target
);
4029 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4033 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4034 struct bp_target_info
*bp_tgt
)
4038 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4040 fprintf_unfiltered (gdb_stdlog
,
4041 "target_insert_breakpoint (%s, xxx) = %ld\n",
4042 core_addr_to_string (bp_tgt
->placed_address
),
4043 (unsigned long) retval
);
4048 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4049 struct bp_target_info
*bp_tgt
)
4053 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4055 fprintf_unfiltered (gdb_stdlog
,
4056 "target_remove_breakpoint (%s, xxx) = %ld\n",
4057 core_addr_to_string (bp_tgt
->placed_address
),
4058 (unsigned long) retval
);
4063 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4064 int type
, int cnt
, int from_tty
)
4068 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4069 type
, cnt
, from_tty
);
4071 fprintf_unfiltered (gdb_stdlog
,
4072 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4073 (unsigned long) type
,
4074 (unsigned long) cnt
,
4075 (unsigned long) from_tty
,
4076 (unsigned long) retval
);
4081 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4082 CORE_ADDR addr
, int len
)
4086 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4089 fprintf_unfiltered (gdb_stdlog
,
4090 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4091 core_addr_to_string (addr
), (unsigned long) len
,
4092 core_addr_to_string (retval
));
4097 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4098 CORE_ADDR addr
, int len
, int rw
,
4099 struct expression
*cond
)
4103 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4107 fprintf_unfiltered (gdb_stdlog
,
4108 "target_can_accel_watchpoint_condition "
4109 "(%s, %d, %d, %s) = %ld\n",
4110 core_addr_to_string (addr
), len
, rw
,
4111 host_address_to_string (cond
), (unsigned long) retval
);
4116 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4120 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4122 fprintf_unfiltered (gdb_stdlog
,
4123 "target_stopped_by_watchpoint () = %ld\n",
4124 (unsigned long) retval
);
4129 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4133 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4135 fprintf_unfiltered (gdb_stdlog
,
4136 "target_stopped_data_address ([%s]) = %ld\n",
4137 core_addr_to_string (*addr
),
4138 (unsigned long)retval
);
4143 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4145 CORE_ADDR start
, int length
)
4149 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4152 fprintf_filtered (gdb_stdlog
,
4153 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4154 core_addr_to_string (addr
), core_addr_to_string (start
),
4160 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4161 struct gdbarch
*gdbarch
,
4162 struct bp_target_info
*bp_tgt
)
4166 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4169 fprintf_unfiltered (gdb_stdlog
,
4170 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4171 core_addr_to_string (bp_tgt
->placed_address
),
4172 (unsigned long) retval
);
4177 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4178 struct gdbarch
*gdbarch
,
4179 struct bp_target_info
*bp_tgt
)
4183 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4186 fprintf_unfiltered (gdb_stdlog
,
4187 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4188 core_addr_to_string (bp_tgt
->placed_address
),
4189 (unsigned long) retval
);
4194 debug_to_insert_watchpoint (struct target_ops
*self
,
4195 CORE_ADDR addr
, int len
, int type
,
4196 struct expression
*cond
)
4200 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4201 addr
, len
, type
, cond
);
4203 fprintf_unfiltered (gdb_stdlog
,
4204 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4205 core_addr_to_string (addr
), len
, type
,
4206 host_address_to_string (cond
), (unsigned long) retval
);
4211 debug_to_remove_watchpoint (struct target_ops
*self
,
4212 CORE_ADDR addr
, int len
, int type
,
4213 struct expression
*cond
)
4217 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4218 addr
, len
, type
, cond
);
4220 fprintf_unfiltered (gdb_stdlog
,
4221 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4222 core_addr_to_string (addr
), len
, type
,
4223 host_address_to_string (cond
), (unsigned long) retval
);
4228 debug_to_terminal_init (struct target_ops
*self
)
4230 debug_target
.to_terminal_init (&debug_target
);
4232 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4236 debug_to_terminal_inferior (struct target_ops
*self
)
4238 debug_target
.to_terminal_inferior (&debug_target
);
4240 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4244 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4246 debug_target
.to_terminal_ours_for_output (&debug_target
);
4248 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4252 debug_to_terminal_ours (struct target_ops
*self
)
4254 debug_target
.to_terminal_ours (&debug_target
);
4256 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4260 debug_to_terminal_save_ours (struct target_ops
*self
)
4262 debug_target
.to_terminal_save_ours (&debug_target
);
4264 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4268 debug_to_terminal_info (struct target_ops
*self
,
4269 const char *arg
, int from_tty
)
4271 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4273 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4278 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4280 debug_target
.to_load (&debug_target
, args
, from_tty
);
4282 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4286 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4288 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4290 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4291 ptid_get_pid (ptid
));
4295 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4299 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4301 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4308 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4312 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4314 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4321 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4325 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4327 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4334 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4338 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4340 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4347 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4351 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4353 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4360 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4364 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4366 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4373 debug_to_has_exited (struct target_ops
*self
,
4374 int pid
, int wait_status
, int *exit_status
)
4378 has_exited
= debug_target
.to_has_exited (&debug_target
,
4379 pid
, wait_status
, exit_status
);
4381 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4382 pid
, wait_status
, *exit_status
, has_exited
);
4388 debug_to_can_run (struct target_ops
*self
)
4392 retval
= debug_target
.to_can_run (&debug_target
);
4394 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4399 static struct gdbarch
*
4400 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4402 struct gdbarch
*retval
;
4404 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4406 fprintf_unfiltered (gdb_stdlog
,
4407 "target_thread_architecture (%s) = %s [%s]\n",
4408 target_pid_to_str (ptid
),
4409 host_address_to_string (retval
),
4410 gdbarch_bfd_arch_info (retval
)->printable_name
);
4415 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4417 debug_target
.to_stop (&debug_target
, ptid
);
4419 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4420 target_pid_to_str (ptid
));
4424 debug_to_rcmd (struct target_ops
*self
, char *command
,
4425 struct ui_file
*outbuf
)
4427 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4428 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4432 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4436 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4438 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4445 setup_target_debug (void)
4447 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4449 current_target
.to_open
= debug_to_open
;
4450 current_target
.to_post_attach
= debug_to_post_attach
;
4451 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4452 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4453 current_target
.to_files_info
= debug_to_files_info
;
4454 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4455 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4456 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4457 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4458 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4459 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4460 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4461 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4462 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4463 current_target
.to_watchpoint_addr_within_range
4464 = debug_to_watchpoint_addr_within_range
;
4465 current_target
.to_region_ok_for_hw_watchpoint
4466 = debug_to_region_ok_for_hw_watchpoint
;
4467 current_target
.to_can_accel_watchpoint_condition
4468 = debug_to_can_accel_watchpoint_condition
;
4469 current_target
.to_terminal_init
= debug_to_terminal_init
;
4470 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4471 current_target
.to_terminal_ours_for_output
4472 = debug_to_terminal_ours_for_output
;
4473 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4474 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4475 current_target
.to_terminal_info
= debug_to_terminal_info
;
4476 current_target
.to_load
= debug_to_load
;
4477 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4478 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4479 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4480 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4481 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4482 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4483 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4484 current_target
.to_has_exited
= debug_to_has_exited
;
4485 current_target
.to_can_run
= debug_to_can_run
;
4486 current_target
.to_stop
= debug_to_stop
;
4487 current_target
.to_rcmd
= debug_to_rcmd
;
4488 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4489 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4493 static char targ_desc
[] =
4494 "Names of targets and files being debugged.\nShows the entire \
4495 stack of targets currently in use (including the exec-file,\n\
4496 core-file, and process, if any), as well as the symbol file name.";
4499 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4501 error (_("\"monitor\" command not supported by this target."));
4505 do_monitor_command (char *cmd
,
4508 target_rcmd (cmd
, gdb_stdtarg
);
4511 /* Print the name of each layers of our target stack. */
4514 maintenance_print_target_stack (char *cmd
, int from_tty
)
4516 struct target_ops
*t
;
4518 printf_filtered (_("The current target stack is:\n"));
4520 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4522 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4526 /* Controls if async mode is permitted. */
4527 int target_async_permitted
= 0;
4529 /* The set command writes to this variable. If the inferior is
4530 executing, target_async_permitted is *not* updated. */
4531 static int target_async_permitted_1
= 0;
4534 set_target_async_command (char *args
, int from_tty
,
4535 struct cmd_list_element
*c
)
4537 if (have_live_inferiors ())
4539 target_async_permitted_1
= target_async_permitted
;
4540 error (_("Cannot change this setting while the inferior is running."));
4543 target_async_permitted
= target_async_permitted_1
;
4547 show_target_async_command (struct ui_file
*file
, int from_tty
,
4548 struct cmd_list_element
*c
,
4551 fprintf_filtered (file
,
4552 _("Controlling the inferior in "
4553 "asynchronous mode is %s.\n"), value
);
4556 /* Temporary copies of permission settings. */
4558 static int may_write_registers_1
= 1;
4559 static int may_write_memory_1
= 1;
4560 static int may_insert_breakpoints_1
= 1;
4561 static int may_insert_tracepoints_1
= 1;
4562 static int may_insert_fast_tracepoints_1
= 1;
4563 static int may_stop_1
= 1;
4565 /* Make the user-set values match the real values again. */
4568 update_target_permissions (void)
4570 may_write_registers_1
= may_write_registers
;
4571 may_write_memory_1
= may_write_memory
;
4572 may_insert_breakpoints_1
= may_insert_breakpoints
;
4573 may_insert_tracepoints_1
= may_insert_tracepoints
;
4574 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4575 may_stop_1
= may_stop
;
4578 /* The one function handles (most of) the permission flags in the same
4582 set_target_permissions (char *args
, int from_tty
,
4583 struct cmd_list_element
*c
)
4585 if (target_has_execution
)
4587 update_target_permissions ();
4588 error (_("Cannot change this setting while the inferior is running."));
4591 /* Make the real values match the user-changed values. */
4592 may_write_registers
= may_write_registers_1
;
4593 may_insert_breakpoints
= may_insert_breakpoints_1
;
4594 may_insert_tracepoints
= may_insert_tracepoints_1
;
4595 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4596 may_stop
= may_stop_1
;
4597 update_observer_mode ();
4600 /* Set memory write permission independently of observer mode. */
4603 set_write_memory_permission (char *args
, int from_tty
,
4604 struct cmd_list_element
*c
)
4606 /* Make the real values match the user-changed values. */
4607 may_write_memory
= may_write_memory_1
;
4608 update_observer_mode ();
4613 initialize_targets (void)
4615 init_dummy_target ();
4616 push_target (&dummy_target
);
4618 add_info ("target", target_info
, targ_desc
);
4619 add_info ("files", target_info
, targ_desc
);
4621 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
4622 Set target debugging."), _("\
4623 Show target debugging."), _("\
4624 When non-zero, target debugging is enabled. Higher numbers are more\n\
4625 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4629 &setdebuglist
, &showdebuglist
);
4631 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
4632 &trust_readonly
, _("\
4633 Set mode for reading from readonly sections."), _("\
4634 Show mode for reading from readonly sections."), _("\
4635 When this mode is on, memory reads from readonly sections (such as .text)\n\
4636 will be read from the object file instead of from the target. This will\n\
4637 result in significant performance improvement for remote targets."),
4639 show_trust_readonly
,
4640 &setlist
, &showlist
);
4642 add_com ("monitor", class_obscure
, do_monitor_command
,
4643 _("Send a command to the remote monitor (remote targets only)."));
4645 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
4646 _("Print the name of each layer of the internal target stack."),
4647 &maintenanceprintlist
);
4649 add_setshow_boolean_cmd ("target-async", no_class
,
4650 &target_async_permitted_1
, _("\
4651 Set whether gdb controls the inferior in asynchronous mode."), _("\
4652 Show whether gdb controls the inferior in asynchronous mode."), _("\
4653 Tells gdb whether to control the inferior in asynchronous mode."),
4654 set_target_async_command
,
4655 show_target_async_command
,
4659 add_setshow_boolean_cmd ("may-write-registers", class_support
,
4660 &may_write_registers_1
, _("\
4661 Set permission to write into registers."), _("\
4662 Show permission to write into registers."), _("\
4663 When this permission is on, GDB may write into the target's registers.\n\
4664 Otherwise, any sort of write attempt will result in an error."),
4665 set_target_permissions
, NULL
,
4666 &setlist
, &showlist
);
4668 add_setshow_boolean_cmd ("may-write-memory", class_support
,
4669 &may_write_memory_1
, _("\
4670 Set permission to write into target memory."), _("\
4671 Show permission to write into target memory."), _("\
4672 When this permission is on, GDB may write into the target's memory.\n\
4673 Otherwise, any sort of write attempt will result in an error."),
4674 set_write_memory_permission
, NULL
,
4675 &setlist
, &showlist
);
4677 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
4678 &may_insert_breakpoints_1
, _("\
4679 Set permission to insert breakpoints in the target."), _("\
4680 Show permission to insert breakpoints in the target."), _("\
4681 When this permission is on, GDB may insert breakpoints in the program.\n\
4682 Otherwise, any sort of insertion attempt will result in an error."),
4683 set_target_permissions
, NULL
,
4684 &setlist
, &showlist
);
4686 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
4687 &may_insert_tracepoints_1
, _("\
4688 Set permission to insert tracepoints in the target."), _("\
4689 Show permission to insert tracepoints in the target."), _("\
4690 When this permission is on, GDB may insert tracepoints in the program.\n\
4691 Otherwise, any sort of insertion attempt will result in an error."),
4692 set_target_permissions
, NULL
,
4693 &setlist
, &showlist
);
4695 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
4696 &may_insert_fast_tracepoints_1
, _("\
4697 Set permission to insert fast tracepoints in the target."), _("\
4698 Show permission to insert fast tracepoints in the target."), _("\
4699 When this permission is on, GDB may insert fast tracepoints.\n\
4700 Otherwise, any sort of insertion attempt will result in an error."),
4701 set_target_permissions
, NULL
,
4702 &setlist
, &showlist
);
4704 add_setshow_boolean_cmd ("may-interrupt", class_support
,
4706 Set permission to interrupt or signal the target."), _("\
4707 Show permission to interrupt or signal the target."), _("\
4708 When this permission is on, GDB may interrupt/stop the target's execution.\n\
4709 Otherwise, any attempt to interrupt or stop will be ignored."),
4710 set_target_permissions
, NULL
,
4711 &setlist
, &showlist
);