1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2014 Free Software Foundation, Inc.
5 Contributed by Cygnus Support.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "target-dcache.h"
36 #include "gdb_assert.h"
38 #include "exceptions.h"
39 #include "target-descriptions.h"
40 #include "gdbthread.h"
43 #include "inline-frame.h"
44 #include "tracepoint.h"
45 #include "gdb/fileio.h"
48 static void target_info (char *, int);
50 static void default_terminal_info (struct target_ops
*, const char *, int);
52 static int default_watchpoint_addr_within_range (struct target_ops
*,
53 CORE_ADDR
, CORE_ADDR
, int);
55 static int default_region_ok_for_hw_watchpoint (struct target_ops
*,
58 static void default_rcmd (struct target_ops
*, char *, struct ui_file
*);
60 static ptid_t
default_get_ada_task_ptid (struct target_ops
*self
,
63 static void tcomplain (void) ATTRIBUTE_NORETURN
;
65 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
67 static int return_zero (void);
69 static void *return_null (void);
71 void target_ignore (void);
73 static void target_command (char *, int);
75 static struct target_ops
*find_default_run_target (char *);
77 static target_xfer_partial_ftype default_xfer_partial
;
79 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
82 static int dummy_find_memory_regions (struct target_ops
*self
,
83 find_memory_region_ftype ignore1
,
86 static char *dummy_make_corefile_notes (struct target_ops
*self
,
87 bfd
*ignore1
, int *ignore2
);
89 static int find_default_can_async_p (struct target_ops
*ignore
);
91 static int find_default_is_async_p (struct target_ops
*ignore
);
93 static enum exec_direction_kind default_execution_direction
94 (struct target_ops
*self
);
96 #include "target-delegates.c"
98 static void init_dummy_target (void);
100 static struct target_ops debug_target
;
102 static void debug_to_open (char *, int);
104 static void debug_to_prepare_to_store (struct target_ops
*self
,
107 static void debug_to_files_info (struct target_ops
*);
109 static int debug_to_insert_breakpoint (struct target_ops
*, struct gdbarch
*,
110 struct bp_target_info
*);
112 static int debug_to_remove_breakpoint (struct target_ops
*, struct gdbarch
*,
113 struct bp_target_info
*);
115 static int debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
118 static int debug_to_insert_hw_breakpoint (struct target_ops
*self
,
120 struct bp_target_info
*);
122 static int debug_to_remove_hw_breakpoint (struct target_ops
*self
,
124 struct bp_target_info
*);
126 static int debug_to_insert_watchpoint (struct target_ops
*self
,
128 struct expression
*);
130 static int debug_to_remove_watchpoint (struct target_ops
*self
,
132 struct expression
*);
134 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
136 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
137 CORE_ADDR
, CORE_ADDR
, int);
139 static int debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
142 static int debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
144 struct expression
*);
146 static void debug_to_terminal_init (struct target_ops
*self
);
148 static void debug_to_terminal_inferior (struct target_ops
*self
);
150 static void debug_to_terminal_ours_for_output (struct target_ops
*self
);
152 static void debug_to_terminal_save_ours (struct target_ops
*self
);
154 static void debug_to_terminal_ours (struct target_ops
*self
);
156 static void debug_to_load (struct target_ops
*self
, char *, int);
158 static int debug_to_can_run (struct target_ops
*self
);
160 static void debug_to_stop (struct target_ops
*self
, ptid_t
);
162 /* Pointer to array of target architecture structures; the size of the
163 array; the current index into the array; the allocated size of the
165 struct target_ops
**target_structs
;
166 unsigned target_struct_size
;
167 unsigned target_struct_allocsize
;
168 #define DEFAULT_ALLOCSIZE 10
170 /* The initial current target, so that there is always a semi-valid
173 static struct target_ops dummy_target
;
175 /* Top of target stack. */
177 static struct target_ops
*target_stack
;
179 /* The target structure we are currently using to talk to a process
180 or file or whatever "inferior" we have. */
182 struct target_ops current_target
;
184 /* Command list for target. */
186 static struct cmd_list_element
*targetlist
= NULL
;
188 /* Nonzero if we should trust readonly sections from the
189 executable when reading memory. */
191 static int trust_readonly
= 0;
193 /* Nonzero if we should show true memory content including
194 memory breakpoint inserted by gdb. */
196 static int show_memory_breakpoints
= 0;
198 /* These globals control whether GDB attempts to perform these
199 operations; they are useful for targets that need to prevent
200 inadvertant disruption, such as in non-stop mode. */
202 int may_write_registers
= 1;
204 int may_write_memory
= 1;
206 int may_insert_breakpoints
= 1;
208 int may_insert_tracepoints
= 1;
210 int may_insert_fast_tracepoints
= 1;
214 /* Non-zero if we want to see trace of target level stuff. */
216 static unsigned int targetdebug
= 0;
218 show_targetdebug (struct ui_file
*file
, int from_tty
,
219 struct cmd_list_element
*c
, const char *value
)
221 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
224 static void setup_target_debug (void);
226 /* The user just typed 'target' without the name of a target. */
229 target_command (char *arg
, int from_tty
)
231 fputs_filtered ("Argument required (target name). Try `help target'\n",
235 /* Default target_has_* methods for process_stratum targets. */
238 default_child_has_all_memory (struct target_ops
*ops
)
240 /* If no inferior selected, then we can't read memory here. */
241 if (ptid_equal (inferior_ptid
, null_ptid
))
248 default_child_has_memory (struct target_ops
*ops
)
250 /* If no inferior selected, then we can't read memory here. */
251 if (ptid_equal (inferior_ptid
, null_ptid
))
258 default_child_has_stack (struct target_ops
*ops
)
260 /* If no inferior selected, there's no stack. */
261 if (ptid_equal (inferior_ptid
, null_ptid
))
268 default_child_has_registers (struct target_ops
*ops
)
270 /* Can't read registers from no inferior. */
271 if (ptid_equal (inferior_ptid
, null_ptid
))
278 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
280 /* If there's no thread selected, then we can't make it run through
282 if (ptid_equal (the_ptid
, null_ptid
))
290 target_has_all_memory_1 (void)
292 struct target_ops
*t
;
294 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
295 if (t
->to_has_all_memory (t
))
302 target_has_memory_1 (void)
304 struct target_ops
*t
;
306 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
307 if (t
->to_has_memory (t
))
314 target_has_stack_1 (void)
316 struct target_ops
*t
;
318 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
319 if (t
->to_has_stack (t
))
326 target_has_registers_1 (void)
328 struct target_ops
*t
;
330 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
331 if (t
->to_has_registers (t
))
338 target_has_execution_1 (ptid_t the_ptid
)
340 struct target_ops
*t
;
342 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
343 if (t
->to_has_execution (t
, the_ptid
))
350 target_has_execution_current (void)
352 return target_has_execution_1 (inferior_ptid
);
355 /* Complete initialization of T. This ensures that various fields in
356 T are set, if needed by the target implementation. */
359 complete_target_initialization (struct target_ops
*t
)
361 /* Provide default values for all "must have" methods. */
362 if (t
->to_xfer_partial
== NULL
)
363 t
->to_xfer_partial
= default_xfer_partial
;
365 if (t
->to_has_all_memory
== NULL
)
366 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
368 if (t
->to_has_memory
== NULL
)
369 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
371 if (t
->to_has_stack
== NULL
)
372 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
374 if (t
->to_has_registers
== NULL
)
375 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
377 if (t
->to_has_execution
== NULL
)
378 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
380 install_delegators (t
);
383 /* Add possible target architecture T to the list and add a new
384 command 'target T->to_shortname'. Set COMPLETER as the command's
385 completer if not NULL. */
388 add_target_with_completer (struct target_ops
*t
,
389 completer_ftype
*completer
)
391 struct cmd_list_element
*c
;
393 complete_target_initialization (t
);
397 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
398 target_structs
= (struct target_ops
**) xmalloc
399 (target_struct_allocsize
* sizeof (*target_structs
));
401 if (target_struct_size
>= target_struct_allocsize
)
403 target_struct_allocsize
*= 2;
404 target_structs
= (struct target_ops
**)
405 xrealloc ((char *) target_structs
,
406 target_struct_allocsize
* sizeof (*target_structs
));
408 target_structs
[target_struct_size
++] = t
;
410 if (targetlist
== NULL
)
411 add_prefix_cmd ("target", class_run
, target_command
, _("\
412 Connect to a target machine or process.\n\
413 The first argument is the type or protocol of the target machine.\n\
414 Remaining arguments are interpreted by the target protocol. For more\n\
415 information on the arguments for a particular protocol, type\n\
416 `help target ' followed by the protocol name."),
417 &targetlist
, "target ", 0, &cmdlist
);
418 c
= add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
,
420 if (completer
!= NULL
)
421 set_cmd_completer (c
, completer
);
424 /* Add a possible target architecture to the list. */
427 add_target (struct target_ops
*t
)
429 add_target_with_completer (t
, NULL
);
435 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
437 struct cmd_list_element
*c
;
440 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
442 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
443 alt
= xstrprintf ("target %s", t
->to_shortname
);
444 deprecate_cmd (c
, alt
);
457 struct target_ops
*t
;
459 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
460 if (t
->to_kill
!= NULL
)
463 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
473 target_load (char *arg
, int from_tty
)
475 target_dcache_invalidate ();
476 (*current_target
.to_load
) (¤t_target
, arg
, from_tty
);
480 target_create_inferior (char *exec_file
, char *args
,
481 char **env
, int from_tty
)
483 struct target_ops
*t
;
485 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
487 if (t
->to_create_inferior
!= NULL
)
489 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
491 fprintf_unfiltered (gdb_stdlog
,
492 "target_create_inferior (%s, %s, xxx, %d)\n",
493 exec_file
, args
, from_tty
);
498 internal_error (__FILE__
, __LINE__
,
499 _("could not find a target to create inferior"));
503 target_terminal_inferior (void)
505 /* A background resume (``run&'') should leave GDB in control of the
506 terminal. Use target_can_async_p, not target_is_async_p, since at
507 this point the target is not async yet. However, if sync_execution
508 is not set, we know it will become async prior to resume. */
509 if (target_can_async_p () && !sync_execution
)
512 /* If GDB is resuming the inferior in the foreground, install
513 inferior's terminal modes. */
514 (*current_target
.to_terminal_inferior
) (¤t_target
);
518 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
519 struct target_ops
*t
)
521 errno
= EIO
; /* Can't read/write this location. */
522 return 0; /* No bytes handled. */
528 error (_("You can't do that when your target is `%s'"),
529 current_target
.to_shortname
);
535 error (_("You can't do that without a process to debug."));
539 default_terminal_info (struct target_ops
*self
, const char *args
, int from_tty
)
541 printf_unfiltered (_("No saved terminal information.\n"));
544 /* A default implementation for the to_get_ada_task_ptid target method.
546 This function builds the PTID by using both LWP and TID as part of
547 the PTID lwp and tid elements. The pid used is the pid of the
551 default_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long tid
)
553 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
556 static enum exec_direction_kind
557 default_execution_direction (struct target_ops
*self
)
559 if (!target_can_execute_reverse
)
561 else if (!target_can_async_p ())
564 gdb_assert_not_reached ("\
565 to_execution_direction must be implemented for reverse async");
568 /* Go through the target stack from top to bottom, copying over zero
569 entries in current_target, then filling in still empty entries. In
570 effect, we are doing class inheritance through the pushed target
573 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
574 is currently implemented, is that it discards any knowledge of
575 which target an inherited method originally belonged to.
576 Consequently, new new target methods should instead explicitly and
577 locally search the target stack for the target that can handle the
581 update_current_target (void)
583 struct target_ops
*t
;
585 /* First, reset current's contents. */
586 memset (¤t_target
, 0, sizeof (current_target
));
588 /* Install the delegators. */
589 install_delegators (¤t_target
);
591 #define INHERIT(FIELD, TARGET) \
592 if (!current_target.FIELD) \
593 current_target.FIELD = (TARGET)->FIELD
595 for (t
= target_stack
; t
; t
= t
->beneath
)
597 INHERIT (to_shortname
, t
);
598 INHERIT (to_longname
, t
);
600 /* Do not inherit to_open. */
601 /* Do not inherit to_close. */
602 /* Do not inherit to_attach. */
603 /* Do not inherit to_post_attach. */
604 INHERIT (to_attach_no_wait
, t
);
605 /* Do not inherit to_detach. */
606 /* Do not inherit to_disconnect. */
607 /* Do not inherit to_resume. */
608 /* Do not inherit to_wait. */
609 /* Do not inherit to_fetch_registers. */
610 /* Do not inherit to_store_registers. */
611 /* Do not inherit to_prepare_to_store. */
612 INHERIT (deprecated_xfer_memory
, t
);
613 /* Do not inherit to_files_info. */
614 /* Do not inherit to_insert_breakpoint. */
615 /* Do not inherit to_remove_breakpoint. */
616 /* Do not inherit to_can_use_hw_breakpoint. */
617 /* Do not inherit to_insert_hw_breakpoint. */
618 /* Do not inherit to_remove_hw_breakpoint. */
619 /* Do not inherit to_ranged_break_num_registers. */
620 /* Do not inherit to_insert_watchpoint. */
621 /* Do not inherit to_remove_watchpoint. */
622 /* Do not inherit to_insert_mask_watchpoint. */
623 /* Do not inherit to_remove_mask_watchpoint. */
624 /* Do not inherit to_stopped_data_address. */
625 INHERIT (to_have_steppable_watchpoint
, t
);
626 INHERIT (to_have_continuable_watchpoint
, t
);
627 /* Do not inherit to_stopped_by_watchpoint. */
628 /* Do not inherit to_watchpoint_addr_within_range. */
629 /* Do not inherit to_region_ok_for_hw_watchpoint. */
630 /* Do not inherit to_can_accel_watchpoint_condition. */
631 /* Do not inherit to_masked_watch_num_registers. */
632 /* Do not inherit to_terminal_init. */
633 /* Do not inherit to_terminal_inferior. */
634 /* Do not inherit to_terminal_ours_for_output. */
635 /* Do not inherit to_terminal_ours. */
636 /* Do not inherit to_terminal_save_ours. */
637 /* Do not inherit to_terminal_info. */
638 /* Do not inherit to_kill. */
639 /* Do not inherit to_load. */
640 /* Do no inherit to_create_inferior. */
641 /* Do not inherit to_post_startup_inferior. */
642 /* Do not inherit to_insert_fork_catchpoint. */
643 /* Do not inherit to_remove_fork_catchpoint. */
644 /* Do not inherit to_insert_vfork_catchpoint. */
645 /* Do not inherit to_remove_vfork_catchpoint. */
646 /* Do not inherit to_follow_fork. */
647 /* Do not inherit to_insert_exec_catchpoint. */
648 /* Do not inherit to_remove_exec_catchpoint. */
649 /* Do not inherit to_set_syscall_catchpoint. */
650 /* Do not inherit to_has_exited. */
651 /* Do not inherit to_mourn_inferior. */
652 INHERIT (to_can_run
, t
);
653 /* Do not inherit to_pass_signals. */
654 /* Do not inherit to_program_signals. */
655 /* Do not inherit to_thread_alive. */
656 /* Do not inherit to_find_new_threads. */
657 /* Do not inherit to_pid_to_str. */
658 /* Do not inherit to_extra_thread_info. */
659 /* Do not inherit to_thread_name. */
660 INHERIT (to_stop
, t
);
661 /* Do not inherit to_xfer_partial. */
662 /* Do not inherit to_rcmd. */
663 /* Do not inherit to_pid_to_exec_file. */
664 /* Do not inherit to_log_command. */
665 INHERIT (to_stratum
, t
);
666 /* Do not inherit to_has_all_memory. */
667 /* Do not inherit to_has_memory. */
668 /* Do not inherit to_has_stack. */
669 /* Do not inherit to_has_registers. */
670 /* Do not inherit to_has_execution. */
671 INHERIT (to_has_thread_control
, t
);
672 /* Do not inherit to_can_async_p. */
673 /* Do not inherit to_is_async_p. */
674 /* Do not inherit to_async. */
675 /* Do not inherit to_find_memory_regions. */
676 /* Do not inherit to_make_corefile_notes. */
677 /* Do not inherit to_get_bookmark. */
678 /* Do not inherit to_goto_bookmark. */
679 /* Do not inherit to_get_thread_local_address. */
680 /* Do not inherit to_can_execute_reverse. */
681 /* Do not inherit to_execution_direction. */
682 /* Do not inherit to_thread_architecture. */
683 /* Do not inherit to_read_description. */
684 /* Do not inherit to_get_ada_task_ptid. */
685 /* Do not inherit to_search_memory. */
686 /* Do not inherit to_supports_multi_process. */
687 /* Do not inherit to_supports_enable_disable_tracepoint. */
688 /* Do not inherit to_supports_string_tracing. */
689 /* Do not inherit to_trace_init. */
690 /* Do not inherit to_download_tracepoint. */
691 /* Do not inherit to_can_download_tracepoint. */
692 /* Do not inherit to_download_trace_state_variable. */
693 /* Do not inherit to_enable_tracepoint. */
694 /* Do not inherit to_disable_tracepoint. */
695 /* Do not inherit to_trace_set_readonly_regions. */
696 /* Do not inherit to_trace_start. */
697 /* Do not inherit to_get_trace_status. */
698 /* Do not inherit to_get_tracepoint_status. */
699 /* Do not inherit to_trace_stop. */
700 /* Do not inherit to_trace_find. */
701 /* Do not inherit to_get_trace_state_variable_value. */
702 /* Do not inherit to_save_trace_data. */
703 /* Do not inherit to_upload_tracepoints. */
704 /* Do not inherit to_upload_trace_state_variables. */
705 /* Do not inherit to_get_raw_trace_data. */
706 /* Do not inherit to_get_min_fast_tracepoint_insn_len. */
707 /* Do not inherit to_set_disconnected_tracing. */
708 /* Do not inherit to_set_circular_trace_buffer. */
709 /* Do not inherit to_set_trace_buffer_size. */
710 INHERIT (to_set_trace_notes
, t
);
711 INHERIT (to_get_tib_address
, t
);
712 INHERIT (to_set_permissions
, t
);
713 INHERIT (to_static_tracepoint_marker_at
, t
);
714 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
715 INHERIT (to_traceframe_info
, t
);
716 INHERIT (to_use_agent
, t
);
717 INHERIT (to_can_use_agent
, t
);
718 INHERIT (to_augmented_libraries_svr4_read
, t
);
719 INHERIT (to_magic
, t
);
720 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
721 INHERIT (to_can_run_breakpoint_commands
, t
);
722 /* Do not inherit to_memory_map. */
723 /* Do not inherit to_flash_erase. */
724 /* Do not inherit to_flash_done. */
728 /* Clean up a target struct so it no longer has any zero pointers in
729 it. Some entries are defaulted to a method that print an error,
730 others are hard-wired to a standard recursive default. */
732 #define de_fault(field, value) \
733 if (!current_target.field) \
734 current_target.field = value
737 (void (*) (char *, int))
740 (void (*) (struct target_ops
*))
742 de_fault (deprecated_xfer_memory
,
743 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
744 struct mem_attrib
*, struct target_ops
*))
746 de_fault (to_can_run
,
747 (int (*) (struct target_ops
*))
750 (void (*) (struct target_ops
*, ptid_t
))
752 current_target
.to_read_description
= NULL
;
753 de_fault (to_set_trace_notes
,
754 (int (*) (struct target_ops
*,
755 const char *, const char *, const char *))
757 de_fault (to_get_tib_address
,
758 (int (*) (struct target_ops
*, ptid_t
, CORE_ADDR
*))
760 de_fault (to_set_permissions
,
761 (void (*) (struct target_ops
*))
763 de_fault (to_static_tracepoint_marker_at
,
764 (int (*) (struct target_ops
*,
765 CORE_ADDR
, struct static_tracepoint_marker
*))
767 de_fault (to_static_tracepoint_markers_by_strid
,
768 (VEC(static_tracepoint_marker_p
) * (*) (struct target_ops
*,
771 de_fault (to_traceframe_info
,
772 (struct traceframe_info
* (*) (struct target_ops
*))
774 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
775 (int (*) (struct target_ops
*))
777 de_fault (to_can_run_breakpoint_commands
,
778 (int (*) (struct target_ops
*))
780 de_fault (to_use_agent
,
781 (int (*) (struct target_ops
*, int))
783 de_fault (to_can_use_agent
,
784 (int (*) (struct target_ops
*))
786 de_fault (to_augmented_libraries_svr4_read
,
787 (int (*) (struct target_ops
*))
792 /* Finally, position the target-stack beneath the squashed
793 "current_target". That way code looking for a non-inherited
794 target method can quickly and simply find it. */
795 current_target
.beneath
= target_stack
;
798 setup_target_debug ();
801 /* Push a new target type into the stack of the existing target accessors,
802 possibly superseding some of the existing accessors.
804 Rather than allow an empty stack, we always have the dummy target at
805 the bottom stratum, so we can call the function vectors without
809 push_target (struct target_ops
*t
)
811 struct target_ops
**cur
;
813 /* Check magic number. If wrong, it probably means someone changed
814 the struct definition, but not all the places that initialize one. */
815 if (t
->to_magic
!= OPS_MAGIC
)
817 fprintf_unfiltered (gdb_stderr
,
818 "Magic number of %s target struct wrong\n",
820 internal_error (__FILE__
, __LINE__
,
821 _("failed internal consistency check"));
824 /* Find the proper stratum to install this target in. */
825 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
827 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
831 /* If there's already targets at this stratum, remove them. */
832 /* FIXME: cagney/2003-10-15: I think this should be popping all
833 targets to CUR, and not just those at this stratum level. */
834 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
836 /* There's already something at this stratum level. Close it,
837 and un-hook it from the stack. */
838 struct target_ops
*tmp
= (*cur
);
840 (*cur
) = (*cur
)->beneath
;
845 /* We have removed all targets in our stratum, now add the new one. */
849 update_current_target ();
852 /* Remove a target_ops vector from the stack, wherever it may be.
853 Return how many times it was removed (0 or 1). */
856 unpush_target (struct target_ops
*t
)
858 struct target_ops
**cur
;
859 struct target_ops
*tmp
;
861 if (t
->to_stratum
== dummy_stratum
)
862 internal_error (__FILE__
, __LINE__
,
863 _("Attempt to unpush the dummy target"));
865 /* Look for the specified target. Note that we assume that a target
866 can only occur once in the target stack. */
868 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
874 /* If we don't find target_ops, quit. Only open targets should be
879 /* Unchain the target. */
881 (*cur
) = (*cur
)->beneath
;
884 update_current_target ();
886 /* Finally close the target. Note we do this after unchaining, so
887 any target method calls from within the target_close
888 implementation don't end up in T anymore. */
895 pop_all_targets_above (enum strata above_stratum
)
897 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
899 if (!unpush_target (target_stack
))
901 fprintf_unfiltered (gdb_stderr
,
902 "pop_all_targets couldn't find target %s\n",
903 target_stack
->to_shortname
);
904 internal_error (__FILE__
, __LINE__
,
905 _("failed internal consistency check"));
912 pop_all_targets (void)
914 pop_all_targets_above (dummy_stratum
);
917 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
920 target_is_pushed (struct target_ops
*t
)
922 struct target_ops
**cur
;
924 /* Check magic number. If wrong, it probably means someone changed
925 the struct definition, but not all the places that initialize one. */
926 if (t
->to_magic
!= OPS_MAGIC
)
928 fprintf_unfiltered (gdb_stderr
,
929 "Magic number of %s target struct wrong\n",
931 internal_error (__FILE__
, __LINE__
,
932 _("failed internal consistency check"));
935 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
942 /* Using the objfile specified in OBJFILE, find the address for the
943 current thread's thread-local storage with offset OFFSET. */
945 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
947 volatile CORE_ADDR addr
= 0;
948 struct target_ops
*target
;
950 for (target
= current_target
.beneath
;
952 target
= target
->beneath
)
954 if (target
->to_get_thread_local_address
!= NULL
)
959 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
961 ptid_t ptid
= inferior_ptid
;
962 volatile struct gdb_exception ex
;
964 TRY_CATCH (ex
, RETURN_MASK_ALL
)
968 /* Fetch the load module address for this objfile. */
969 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
971 /* If it's 0, throw the appropriate exception. */
973 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
974 _("TLS load module not found"));
976 addr
= target
->to_get_thread_local_address (target
, ptid
,
979 /* If an error occurred, print TLS related messages here. Otherwise,
980 throw the error to some higher catcher. */
983 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
987 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
988 error (_("Cannot find thread-local variables "
989 "in this thread library."));
991 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
992 if (objfile_is_library
)
993 error (_("Cannot find shared library `%s' in dynamic"
994 " linker's load module list"), objfile_name (objfile
));
996 error (_("Cannot find executable file `%s' in dynamic"
997 " linker's load module list"), objfile_name (objfile
));
999 case TLS_NOT_ALLOCATED_YET_ERROR
:
1000 if (objfile_is_library
)
1001 error (_("The inferior has not yet allocated storage for"
1002 " thread-local variables in\n"
1003 "the shared library `%s'\n"
1005 objfile_name (objfile
), target_pid_to_str (ptid
));
1007 error (_("The inferior has not yet allocated storage for"
1008 " thread-local variables in\n"
1009 "the executable `%s'\n"
1011 objfile_name (objfile
), target_pid_to_str (ptid
));
1013 case TLS_GENERIC_ERROR
:
1014 if (objfile_is_library
)
1015 error (_("Cannot find thread-local storage for %s, "
1016 "shared library %s:\n%s"),
1017 target_pid_to_str (ptid
),
1018 objfile_name (objfile
), ex
.message
);
1020 error (_("Cannot find thread-local storage for %s, "
1021 "executable file %s:\n%s"),
1022 target_pid_to_str (ptid
),
1023 objfile_name (objfile
), ex
.message
);
1026 throw_exception (ex
);
1031 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1032 TLS is an ABI-specific thing. But we don't do that yet. */
1034 error (_("Cannot find thread-local variables on this target"));
1040 target_xfer_status_to_string (enum target_xfer_status err
)
1042 #define CASE(X) case X: return #X
1045 CASE(TARGET_XFER_E_IO
);
1046 CASE(TARGET_XFER_E_UNAVAILABLE
);
1055 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1057 /* target_read_string -- read a null terminated string, up to LEN bytes,
1058 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1059 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1060 is responsible for freeing it. Return the number of bytes successfully
1064 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1066 int tlen
, offset
, i
;
1070 int buffer_allocated
;
1072 unsigned int nbytes_read
= 0;
1074 gdb_assert (string
);
1076 /* Small for testing. */
1077 buffer_allocated
= 4;
1078 buffer
= xmalloc (buffer_allocated
);
1083 tlen
= MIN (len
, 4 - (memaddr
& 3));
1084 offset
= memaddr
& 3;
1086 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1089 /* The transfer request might have crossed the boundary to an
1090 unallocated region of memory. Retry the transfer, requesting
1094 errcode
= target_read_memory (memaddr
, buf
, 1);
1099 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1103 bytes
= bufptr
- buffer
;
1104 buffer_allocated
*= 2;
1105 buffer
= xrealloc (buffer
, buffer_allocated
);
1106 bufptr
= buffer
+ bytes
;
1109 for (i
= 0; i
< tlen
; i
++)
1111 *bufptr
++ = buf
[i
+ offset
];
1112 if (buf
[i
+ offset
] == '\000')
1114 nbytes_read
+= i
+ 1;
1121 nbytes_read
+= tlen
;
1130 struct target_section_table
*
1131 target_get_section_table (struct target_ops
*target
)
1133 struct target_ops
*t
;
1136 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1138 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1139 if (t
->to_get_section_table
!= NULL
)
1140 return (*t
->to_get_section_table
) (t
);
1145 /* Find a section containing ADDR. */
1147 struct target_section
*
1148 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1150 struct target_section_table
*table
= target_get_section_table (target
);
1151 struct target_section
*secp
;
1156 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1158 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1164 /* Read memory from the live target, even if currently inspecting a
1165 traceframe. The return is the same as that of target_read. */
1167 static enum target_xfer_status
1168 target_read_live_memory (enum target_object object
,
1169 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1170 ULONGEST
*xfered_len
)
1172 enum target_xfer_status ret
;
1173 struct cleanup
*cleanup
;
1175 /* Switch momentarily out of tfind mode so to access live memory.
1176 Note that this must not clear global state, such as the frame
1177 cache, which must still remain valid for the previous traceframe.
1178 We may be _building_ the frame cache at this point. */
1179 cleanup
= make_cleanup_restore_traceframe_number ();
1180 set_traceframe_number (-1);
1182 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1183 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1185 do_cleanups (cleanup
);
1189 /* Using the set of read-only target sections of OPS, read live
1190 read-only memory. Note that the actual reads start from the
1191 top-most target again.
1193 For interface/parameters/return description see target.h,
1196 static enum target_xfer_status
1197 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1198 enum target_object object
,
1199 gdb_byte
*readbuf
, ULONGEST memaddr
,
1200 ULONGEST len
, ULONGEST
*xfered_len
)
1202 struct target_section
*secp
;
1203 struct target_section_table
*table
;
1205 secp
= target_section_by_addr (ops
, memaddr
);
1207 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1208 secp
->the_bfd_section
)
1211 struct target_section
*p
;
1212 ULONGEST memend
= memaddr
+ len
;
1214 table
= target_get_section_table (ops
);
1216 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1218 if (memaddr
>= p
->addr
)
1220 if (memend
<= p
->endaddr
)
1222 /* Entire transfer is within this section. */
1223 return target_read_live_memory (object
, memaddr
,
1224 readbuf
, len
, xfered_len
);
1226 else if (memaddr
>= p
->endaddr
)
1228 /* This section ends before the transfer starts. */
1233 /* This section overlaps the transfer. Just do half. */
1234 len
= p
->endaddr
- memaddr
;
1235 return target_read_live_memory (object
, memaddr
,
1236 readbuf
, len
, xfered_len
);
1242 return TARGET_XFER_EOF
;
1245 /* Read memory from more than one valid target. A core file, for
1246 instance, could have some of memory but delegate other bits to
1247 the target below it. So, we must manually try all targets. */
1249 static enum target_xfer_status
1250 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1251 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1252 ULONGEST
*xfered_len
)
1254 enum target_xfer_status res
;
1258 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1259 readbuf
, writebuf
, memaddr
, len
,
1261 if (res
== TARGET_XFER_OK
)
1264 /* Stop if the target reports that the memory is not available. */
1265 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1268 /* We want to continue past core files to executables, but not
1269 past a running target's memory. */
1270 if (ops
->to_has_all_memory (ops
))
1275 while (ops
!= NULL
);
1280 /* Perform a partial memory transfer.
1281 For docs see target.h, to_xfer_partial. */
1283 static enum target_xfer_status
1284 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1285 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1286 ULONGEST len
, ULONGEST
*xfered_len
)
1288 enum target_xfer_status res
;
1290 struct mem_region
*region
;
1291 struct inferior
*inf
;
1293 /* For accesses to unmapped overlay sections, read directly from
1294 files. Must do this first, as MEMADDR may need adjustment. */
1295 if (readbuf
!= NULL
&& overlay_debugging
)
1297 struct obj_section
*section
= find_pc_overlay (memaddr
);
1299 if (pc_in_unmapped_range (memaddr
, section
))
1301 struct target_section_table
*table
1302 = target_get_section_table (ops
);
1303 const char *section_name
= section
->the_bfd_section
->name
;
1305 memaddr
= overlay_mapped_address (memaddr
, section
);
1306 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1307 memaddr
, len
, xfered_len
,
1309 table
->sections_end
,
1314 /* Try the executable files, if "trust-readonly-sections" is set. */
1315 if (readbuf
!= NULL
&& trust_readonly
)
1317 struct target_section
*secp
;
1318 struct target_section_table
*table
;
1320 secp
= target_section_by_addr (ops
, memaddr
);
1322 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1323 secp
->the_bfd_section
)
1326 table
= target_get_section_table (ops
);
1327 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1328 memaddr
, len
, xfered_len
,
1330 table
->sections_end
,
1335 /* If reading unavailable memory in the context of traceframes, and
1336 this address falls within a read-only section, fallback to
1337 reading from live memory. */
1338 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1340 VEC(mem_range_s
) *available
;
1342 /* If we fail to get the set of available memory, then the
1343 target does not support querying traceframe info, and so we
1344 attempt reading from the traceframe anyway (assuming the
1345 target implements the old QTro packet then). */
1346 if (traceframe_available_memory (&available
, memaddr
, len
))
1348 struct cleanup
*old_chain
;
1350 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1352 if (VEC_empty (mem_range_s
, available
)
1353 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1355 /* Don't read into the traceframe's available
1357 if (!VEC_empty (mem_range_s
, available
))
1359 LONGEST oldlen
= len
;
1361 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1362 gdb_assert (len
<= oldlen
);
1365 do_cleanups (old_chain
);
1367 /* This goes through the topmost target again. */
1368 res
= memory_xfer_live_readonly_partial (ops
, object
,
1371 if (res
== TARGET_XFER_OK
)
1372 return TARGET_XFER_OK
;
1375 /* No use trying further, we know some memory starting
1376 at MEMADDR isn't available. */
1378 return TARGET_XFER_E_UNAVAILABLE
;
1382 /* Don't try to read more than how much is available, in
1383 case the target implements the deprecated QTro packet to
1384 cater for older GDBs (the target's knowledge of read-only
1385 sections may be outdated by now). */
1386 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1388 do_cleanups (old_chain
);
1392 /* Try GDB's internal data cache. */
1393 region
= lookup_mem_region (memaddr
);
1394 /* region->hi == 0 means there's no upper bound. */
1395 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1398 reg_len
= region
->hi
- memaddr
;
1400 switch (region
->attrib
.mode
)
1403 if (writebuf
!= NULL
)
1404 return TARGET_XFER_E_IO
;
1408 if (readbuf
!= NULL
)
1409 return TARGET_XFER_E_IO
;
1413 /* We only support writing to flash during "load" for now. */
1414 if (writebuf
!= NULL
)
1415 error (_("Writing to flash memory forbidden in this context"));
1419 return TARGET_XFER_E_IO
;
1422 if (!ptid_equal (inferior_ptid
, null_ptid
))
1423 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1428 /* The dcache reads whole cache lines; that doesn't play well
1429 with reading from a trace buffer, because reading outside of
1430 the collected memory range fails. */
1431 && get_traceframe_number () == -1
1432 && (region
->attrib
.cache
1433 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1434 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1436 DCACHE
*dcache
= target_dcache_get_or_init ();
1439 if (readbuf
!= NULL
)
1440 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1442 /* FIXME drow/2006-08-09: If we're going to preserve const
1443 correctness dcache_xfer_memory should take readbuf and
1445 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1448 return TARGET_XFER_E_IO
;
1451 *xfered_len
= (ULONGEST
) l
;
1452 return TARGET_XFER_OK
;
1456 /* If none of those methods found the memory we wanted, fall back
1457 to a target partial transfer. Normally a single call to
1458 to_xfer_partial is enough; if it doesn't recognize an object
1459 it will call the to_xfer_partial of the next target down.
1460 But for memory this won't do. Memory is the only target
1461 object which can be read from more than one valid target.
1462 A core file, for instance, could have some of memory but
1463 delegate other bits to the target below it. So, we must
1464 manually try all targets. */
1466 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1469 /* Make sure the cache gets updated no matter what - if we are writing
1470 to the stack. Even if this write is not tagged as such, we still need
1471 to update the cache. */
1473 if (res
== TARGET_XFER_OK
1476 && target_dcache_init_p ()
1477 && !region
->attrib
.cache
1478 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1479 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1481 DCACHE
*dcache
= target_dcache_get ();
1483 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1486 /* If we still haven't got anything, return the last error. We
1491 /* Perform a partial memory transfer. For docs see target.h,
1494 static enum target_xfer_status
1495 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1496 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1497 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1499 enum target_xfer_status res
;
1501 /* Zero length requests are ok and require no work. */
1503 return TARGET_XFER_EOF
;
1505 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1506 breakpoint insns, thus hiding out from higher layers whether
1507 there are software breakpoints inserted in the code stream. */
1508 if (readbuf
!= NULL
)
1510 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1513 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1514 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1519 struct cleanup
*old_chain
;
1521 /* A large write request is likely to be partially satisfied
1522 by memory_xfer_partial_1. We will continually malloc
1523 and free a copy of the entire write request for breakpoint
1524 shadow handling even though we only end up writing a small
1525 subset of it. Cap writes to 4KB to mitigate this. */
1526 len
= min (4096, len
);
1528 buf
= xmalloc (len
);
1529 old_chain
= make_cleanup (xfree
, buf
);
1530 memcpy (buf
, writebuf
, len
);
1532 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1533 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1536 do_cleanups (old_chain
);
1543 restore_show_memory_breakpoints (void *arg
)
1545 show_memory_breakpoints
= (uintptr_t) arg
;
1549 make_show_memory_breakpoints_cleanup (int show
)
1551 int current
= show_memory_breakpoints
;
1553 show_memory_breakpoints
= show
;
1554 return make_cleanup (restore_show_memory_breakpoints
,
1555 (void *) (uintptr_t) current
);
1558 /* For docs see target.h, to_xfer_partial. */
1560 enum target_xfer_status
1561 target_xfer_partial (struct target_ops
*ops
,
1562 enum target_object object
, const char *annex
,
1563 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1564 ULONGEST offset
, ULONGEST len
,
1565 ULONGEST
*xfered_len
)
1567 enum target_xfer_status retval
;
1569 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1571 /* Transfer is done when LEN is zero. */
1573 return TARGET_XFER_EOF
;
1575 if (writebuf
&& !may_write_memory
)
1576 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1577 core_addr_to_string_nz (offset
), plongest (len
));
1581 /* If this is a memory transfer, let the memory-specific code
1582 have a look at it instead. Memory transfers are more
1584 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1585 || object
== TARGET_OBJECT_CODE_MEMORY
)
1586 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1587 writebuf
, offset
, len
, xfered_len
);
1588 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1590 /* Request the normal memory object from other layers. */
1591 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1595 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1596 writebuf
, offset
, len
, xfered_len
);
1600 const unsigned char *myaddr
= NULL
;
1602 fprintf_unfiltered (gdb_stdlog
,
1603 "%s:target_xfer_partial "
1604 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1607 (annex
? annex
: "(null)"),
1608 host_address_to_string (readbuf
),
1609 host_address_to_string (writebuf
),
1610 core_addr_to_string_nz (offset
),
1611 pulongest (len
), retval
,
1612 pulongest (*xfered_len
));
1618 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1622 fputs_unfiltered (", bytes =", gdb_stdlog
);
1623 for (i
= 0; i
< *xfered_len
; i
++)
1625 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1627 if (targetdebug
< 2 && i
> 0)
1629 fprintf_unfiltered (gdb_stdlog
, " ...");
1632 fprintf_unfiltered (gdb_stdlog
, "\n");
1635 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1639 fputc_unfiltered ('\n', gdb_stdlog
);
1642 /* Check implementations of to_xfer_partial update *XFERED_LEN
1643 properly. Do assertion after printing debug messages, so that we
1644 can find more clues on assertion failure from debugging messages. */
1645 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1646 gdb_assert (*xfered_len
> 0);
1651 /* Read LEN bytes of target memory at address MEMADDR, placing the
1652 results in GDB's memory at MYADDR. Returns either 0 for success or
1653 TARGET_XFER_E_IO if any error occurs.
1655 If an error occurs, no guarantee is made about the contents of the data at
1656 MYADDR. In particular, the caller should not depend upon partial reads
1657 filling the buffer with good data. There is no way for the caller to know
1658 how much good data might have been transfered anyway. Callers that can
1659 deal with partial reads should call target_read (which will retry until
1660 it makes no progress, and then return how much was transferred). */
1663 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1665 /* Dispatch to the topmost target, not the flattened current_target.
1666 Memory accesses check target->to_has_(all_)memory, and the
1667 flattened target doesn't inherit those. */
1668 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1669 myaddr
, memaddr
, len
) == len
)
1672 return TARGET_XFER_E_IO
;
1675 /* Like target_read_memory, but specify explicitly that this is a read
1676 from the target's raw memory. That is, this read bypasses the
1677 dcache, breakpoint shadowing, etc. */
1680 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1682 /* See comment in target_read_memory about why the request starts at
1683 current_target.beneath. */
1684 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1685 myaddr
, memaddr
, len
) == len
)
1688 return TARGET_XFER_E_IO
;
1691 /* Like target_read_memory, but specify explicitly that this is a read from
1692 the target's stack. This may trigger different cache behavior. */
1695 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1697 /* See comment in target_read_memory about why the request starts at
1698 current_target.beneath. */
1699 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1700 myaddr
, memaddr
, len
) == len
)
1703 return TARGET_XFER_E_IO
;
1706 /* Like target_read_memory, but specify explicitly that this is a read from
1707 the target's code. This may trigger different cache behavior. */
1710 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1712 /* See comment in target_read_memory about why the request starts at
1713 current_target.beneath. */
1714 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1715 myaddr
, memaddr
, len
) == len
)
1718 return TARGET_XFER_E_IO
;
1721 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1722 Returns either 0 for success or TARGET_XFER_E_IO if any
1723 error occurs. If an error occurs, no guarantee is made about how
1724 much data got written. Callers that can deal with partial writes
1725 should call target_write. */
1728 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1730 /* See comment in target_read_memory about why the request starts at
1731 current_target.beneath. */
1732 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1733 myaddr
, memaddr
, len
) == len
)
1736 return TARGET_XFER_E_IO
;
1739 /* Write LEN bytes from MYADDR to target raw memory at address
1740 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1741 if any error occurs. If an error occurs, no guarantee is made
1742 about how much data got written. Callers that can deal with
1743 partial writes should call target_write. */
1746 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1748 /* See comment in target_read_memory about why the request starts at
1749 current_target.beneath. */
1750 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1751 myaddr
, memaddr
, len
) == len
)
1754 return TARGET_XFER_E_IO
;
1757 /* Fetch the target's memory map. */
1760 target_memory_map (void)
1762 VEC(mem_region_s
) *result
;
1763 struct mem_region
*last_one
, *this_one
;
1765 struct target_ops
*t
;
1768 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1770 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1771 if (t
->to_memory_map
!= NULL
)
1777 result
= t
->to_memory_map (t
);
1781 qsort (VEC_address (mem_region_s
, result
),
1782 VEC_length (mem_region_s
, result
),
1783 sizeof (struct mem_region
), mem_region_cmp
);
1785 /* Check that regions do not overlap. Simultaneously assign
1786 a numbering for the "mem" commands to use to refer to
1789 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1791 this_one
->number
= ix
;
1793 if (last_one
&& last_one
->hi
> this_one
->lo
)
1795 warning (_("Overlapping regions in memory map: ignoring"));
1796 VEC_free (mem_region_s
, result
);
1799 last_one
= this_one
;
1806 target_flash_erase (ULONGEST address
, LONGEST length
)
1808 struct target_ops
*t
;
1810 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1811 if (t
->to_flash_erase
!= NULL
)
1814 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1815 hex_string (address
), phex (length
, 0));
1816 t
->to_flash_erase (t
, address
, length
);
1824 target_flash_done (void)
1826 struct target_ops
*t
;
1828 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1829 if (t
->to_flash_done
!= NULL
)
1832 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1833 t
->to_flash_done (t
);
1841 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1842 struct cmd_list_element
*c
, const char *value
)
1844 fprintf_filtered (file
,
1845 _("Mode for reading from readonly sections is %s.\n"),
1849 /* More generic transfers. */
1851 static enum target_xfer_status
1852 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1853 const char *annex
, gdb_byte
*readbuf
,
1854 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1855 ULONGEST
*xfered_len
)
1857 if (object
== TARGET_OBJECT_MEMORY
1858 && ops
->deprecated_xfer_memory
!= NULL
)
1859 /* If available, fall back to the target's
1860 "deprecated_xfer_memory" method. */
1865 if (writebuf
!= NULL
)
1867 void *buffer
= xmalloc (len
);
1868 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1870 memcpy (buffer
, writebuf
, len
);
1871 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1872 1/*write*/, NULL
, ops
);
1873 do_cleanups (cleanup
);
1875 if (readbuf
!= NULL
)
1876 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1877 0/*read*/, NULL
, ops
);
1880 *xfered_len
= (ULONGEST
) xfered
;
1881 return TARGET_XFER_E_IO
;
1883 else if (xfered
== 0 && errno
== 0)
1884 /* "deprecated_xfer_memory" uses 0, cross checked against
1885 ERRNO as one indication of an error. */
1886 return TARGET_XFER_EOF
;
1888 return TARGET_XFER_E_IO
;
1892 gdb_assert (ops
->beneath
!= NULL
);
1893 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1894 readbuf
, writebuf
, offset
, len
,
1899 /* Target vector read/write partial wrapper functions. */
1901 static enum target_xfer_status
1902 target_read_partial (struct target_ops
*ops
,
1903 enum target_object object
,
1904 const char *annex
, gdb_byte
*buf
,
1905 ULONGEST offset
, ULONGEST len
,
1906 ULONGEST
*xfered_len
)
1908 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
1912 static enum target_xfer_status
1913 target_write_partial (struct target_ops
*ops
,
1914 enum target_object object
,
1915 const char *annex
, const gdb_byte
*buf
,
1916 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
1918 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
1922 /* Wrappers to perform the full transfer. */
1924 /* For docs on target_read see target.h. */
1927 target_read (struct target_ops
*ops
,
1928 enum target_object object
,
1929 const char *annex
, gdb_byte
*buf
,
1930 ULONGEST offset
, LONGEST len
)
1934 while (xfered
< len
)
1936 ULONGEST xfered_len
;
1937 enum target_xfer_status status
;
1939 status
= target_read_partial (ops
, object
, annex
,
1940 (gdb_byte
*) buf
+ xfered
,
1941 offset
+ xfered
, len
- xfered
,
1944 /* Call an observer, notifying them of the xfer progress? */
1945 if (status
== TARGET_XFER_EOF
)
1947 else if (status
== TARGET_XFER_OK
)
1949 xfered
+= xfered_len
;
1959 /* Assuming that the entire [begin, end) range of memory cannot be
1960 read, try to read whatever subrange is possible to read.
1962 The function returns, in RESULT, either zero or one memory block.
1963 If there's a readable subrange at the beginning, it is completely
1964 read and returned. Any further readable subrange will not be read.
1965 Otherwise, if there's a readable subrange at the end, it will be
1966 completely read and returned. Any readable subranges before it
1967 (obviously, not starting at the beginning), will be ignored. In
1968 other cases -- either no readable subrange, or readable subrange(s)
1969 that is neither at the beginning, or end, nothing is returned.
1971 The purpose of this function is to handle a read across a boundary
1972 of accessible memory in a case when memory map is not available.
1973 The above restrictions are fine for this case, but will give
1974 incorrect results if the memory is 'patchy'. However, supporting
1975 'patchy' memory would require trying to read every single byte,
1976 and it seems unacceptable solution. Explicit memory map is
1977 recommended for this case -- and target_read_memory_robust will
1978 take care of reading multiple ranges then. */
1981 read_whatever_is_readable (struct target_ops
*ops
,
1982 ULONGEST begin
, ULONGEST end
,
1983 VEC(memory_read_result_s
) **result
)
1985 gdb_byte
*buf
= xmalloc (end
- begin
);
1986 ULONGEST current_begin
= begin
;
1987 ULONGEST current_end
= end
;
1989 memory_read_result_s r
;
1990 ULONGEST xfered_len
;
1992 /* If we previously failed to read 1 byte, nothing can be done here. */
1993 if (end
- begin
<= 1)
1999 /* Check that either first or the last byte is readable, and give up
2000 if not. This heuristic is meant to permit reading accessible memory
2001 at the boundary of accessible region. */
2002 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2003 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
2008 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2009 buf
+ (end
-begin
) - 1, end
- 1, 1,
2010 &xfered_len
) == TARGET_XFER_OK
)
2021 /* Loop invariant is that the [current_begin, current_end) was previously
2022 found to be not readable as a whole.
2024 Note loop condition -- if the range has 1 byte, we can't divide the range
2025 so there's no point trying further. */
2026 while (current_end
- current_begin
> 1)
2028 ULONGEST first_half_begin
, first_half_end
;
2029 ULONGEST second_half_begin
, second_half_end
;
2031 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2035 first_half_begin
= current_begin
;
2036 first_half_end
= middle
;
2037 second_half_begin
= middle
;
2038 second_half_end
= current_end
;
2042 first_half_begin
= middle
;
2043 first_half_end
= current_end
;
2044 second_half_begin
= current_begin
;
2045 second_half_end
= middle
;
2048 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2049 buf
+ (first_half_begin
- begin
),
2051 first_half_end
- first_half_begin
);
2053 if (xfer
== first_half_end
- first_half_begin
)
2055 /* This half reads up fine. So, the error must be in the
2057 current_begin
= second_half_begin
;
2058 current_end
= second_half_end
;
2062 /* This half is not readable. Because we've tried one byte, we
2063 know some part of this half if actually redable. Go to the next
2064 iteration to divide again and try to read.
2066 We don't handle the other half, because this function only tries
2067 to read a single readable subrange. */
2068 current_begin
= first_half_begin
;
2069 current_end
= first_half_end
;
2075 /* The [begin, current_begin) range has been read. */
2077 r
.end
= current_begin
;
2082 /* The [current_end, end) range has been read. */
2083 LONGEST rlen
= end
- current_end
;
2085 r
.data
= xmalloc (rlen
);
2086 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2087 r
.begin
= current_end
;
2091 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2095 free_memory_read_result_vector (void *x
)
2097 VEC(memory_read_result_s
) *v
= x
;
2098 memory_read_result_s
*current
;
2101 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2103 xfree (current
->data
);
2105 VEC_free (memory_read_result_s
, v
);
2108 VEC(memory_read_result_s
) *
2109 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2111 VEC(memory_read_result_s
) *result
= 0;
2114 while (xfered
< len
)
2116 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2119 /* If there is no explicit region, a fake one should be created. */
2120 gdb_assert (region
);
2122 if (region
->hi
== 0)
2123 rlen
= len
- xfered
;
2125 rlen
= region
->hi
- offset
;
2127 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2129 /* Cannot read this region. Note that we can end up here only
2130 if the region is explicitly marked inaccessible, or
2131 'inaccessible-by-default' is in effect. */
2136 LONGEST to_read
= min (len
- xfered
, rlen
);
2137 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2139 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2140 (gdb_byte
*) buffer
,
2141 offset
+ xfered
, to_read
);
2142 /* Call an observer, notifying them of the xfer progress? */
2145 /* Got an error reading full chunk. See if maybe we can read
2148 read_whatever_is_readable (ops
, offset
+ xfered
,
2149 offset
+ xfered
+ to_read
, &result
);
2154 struct memory_read_result r
;
2156 r
.begin
= offset
+ xfered
;
2157 r
.end
= r
.begin
+ xfer
;
2158 VEC_safe_push (memory_read_result_s
, result
, &r
);
2168 /* An alternative to target_write with progress callbacks. */
2171 target_write_with_progress (struct target_ops
*ops
,
2172 enum target_object object
,
2173 const char *annex
, const gdb_byte
*buf
,
2174 ULONGEST offset
, LONGEST len
,
2175 void (*progress
) (ULONGEST
, void *), void *baton
)
2179 /* Give the progress callback a chance to set up. */
2181 (*progress
) (0, baton
);
2183 while (xfered
< len
)
2185 ULONGEST xfered_len
;
2186 enum target_xfer_status status
;
2188 status
= target_write_partial (ops
, object
, annex
,
2189 (gdb_byte
*) buf
+ xfered
,
2190 offset
+ xfered
, len
- xfered
,
2193 if (status
== TARGET_XFER_EOF
)
2195 if (TARGET_XFER_STATUS_ERROR_P (status
))
2198 gdb_assert (status
== TARGET_XFER_OK
);
2200 (*progress
) (xfered_len
, baton
);
2202 xfered
+= xfered_len
;
2208 /* For docs on target_write see target.h. */
2211 target_write (struct target_ops
*ops
,
2212 enum target_object object
,
2213 const char *annex
, const gdb_byte
*buf
,
2214 ULONGEST offset
, LONGEST len
)
2216 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2220 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2221 the size of the transferred data. PADDING additional bytes are
2222 available in *BUF_P. This is a helper function for
2223 target_read_alloc; see the declaration of that function for more
2227 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2228 const char *annex
, gdb_byte
**buf_p
, int padding
)
2230 size_t buf_alloc
, buf_pos
;
2233 /* This function does not have a length parameter; it reads the
2234 entire OBJECT). Also, it doesn't support objects fetched partly
2235 from one target and partly from another (in a different stratum,
2236 e.g. a core file and an executable). Both reasons make it
2237 unsuitable for reading memory. */
2238 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2240 /* Start by reading up to 4K at a time. The target will throttle
2241 this number down if necessary. */
2243 buf
= xmalloc (buf_alloc
);
2247 ULONGEST xfered_len
;
2248 enum target_xfer_status status
;
2250 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2251 buf_pos
, buf_alloc
- buf_pos
- padding
,
2254 if (status
== TARGET_XFER_EOF
)
2256 /* Read all there was. */
2263 else if (status
!= TARGET_XFER_OK
)
2265 /* An error occurred. */
2267 return TARGET_XFER_E_IO
;
2270 buf_pos
+= xfered_len
;
2272 /* If the buffer is filling up, expand it. */
2273 if (buf_alloc
< buf_pos
* 2)
2276 buf
= xrealloc (buf
, buf_alloc
);
2283 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2284 the size of the transferred data. See the declaration in "target.h"
2285 function for more information about the return value. */
2288 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2289 const char *annex
, gdb_byte
**buf_p
)
2291 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2294 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2295 returned as a string, allocated using xmalloc. If an error occurs
2296 or the transfer is unsupported, NULL is returned. Empty objects
2297 are returned as allocated but empty strings. A warning is issued
2298 if the result contains any embedded NUL bytes. */
2301 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2306 LONGEST i
, transferred
;
2308 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2309 bufstr
= (char *) buffer
;
2311 if (transferred
< 0)
2314 if (transferred
== 0)
2315 return xstrdup ("");
2317 bufstr
[transferred
] = 0;
2319 /* Check for embedded NUL bytes; but allow trailing NULs. */
2320 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2323 warning (_("target object %d, annex %s, "
2324 "contained unexpected null characters"),
2325 (int) object
, annex
? annex
: "(none)");
2332 /* Memory transfer methods. */
2335 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2338 /* This method is used to read from an alternate, non-current
2339 target. This read must bypass the overlay support (as symbols
2340 don't match this target), and GDB's internal cache (wrong cache
2341 for this target). */
2342 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2344 memory_error (TARGET_XFER_E_IO
, addr
);
2348 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2349 int len
, enum bfd_endian byte_order
)
2351 gdb_byte buf
[sizeof (ULONGEST
)];
2353 gdb_assert (len
<= sizeof (buf
));
2354 get_target_memory (ops
, addr
, buf
, len
);
2355 return extract_unsigned_integer (buf
, len
, byte_order
);
2361 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2362 struct bp_target_info
*bp_tgt
)
2364 if (!may_insert_breakpoints
)
2366 warning (_("May not insert breakpoints"));
2370 return current_target
.to_insert_breakpoint (¤t_target
,
2377 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2378 struct bp_target_info
*bp_tgt
)
2380 /* This is kind of a weird case to handle, but the permission might
2381 have been changed after breakpoints were inserted - in which case
2382 we should just take the user literally and assume that any
2383 breakpoints should be left in place. */
2384 if (!may_insert_breakpoints
)
2386 warning (_("May not remove breakpoints"));
2390 return current_target
.to_remove_breakpoint (¤t_target
,
2395 target_info (char *args
, int from_tty
)
2397 struct target_ops
*t
;
2398 int has_all_mem
= 0;
2400 if (symfile_objfile
!= NULL
)
2401 printf_unfiltered (_("Symbols from \"%s\".\n"),
2402 objfile_name (symfile_objfile
));
2404 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2406 if (!(*t
->to_has_memory
) (t
))
2409 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2412 printf_unfiltered (_("\tWhile running this, "
2413 "GDB does not access memory from...\n"));
2414 printf_unfiltered ("%s:\n", t
->to_longname
);
2415 (t
->to_files_info
) (t
);
2416 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2420 /* This function is called before any new inferior is created, e.g.
2421 by running a program, attaching, or connecting to a target.
2422 It cleans up any state from previous invocations which might
2423 change between runs. This is a subset of what target_preopen
2424 resets (things which might change between targets). */
2427 target_pre_inferior (int from_tty
)
2429 /* Clear out solib state. Otherwise the solib state of the previous
2430 inferior might have survived and is entirely wrong for the new
2431 target. This has been observed on GNU/Linux using glibc 2.3. How
2443 Cannot access memory at address 0xdeadbeef
2446 /* In some OSs, the shared library list is the same/global/shared
2447 across inferiors. If code is shared between processes, so are
2448 memory regions and features. */
2449 if (!gdbarch_has_global_solist (target_gdbarch ()))
2451 no_shared_libraries (NULL
, from_tty
);
2453 invalidate_target_mem_regions ();
2455 target_clear_description ();
2458 agent_capability_invalidate ();
2461 /* Callback for iterate_over_inferiors. Gets rid of the given
2465 dispose_inferior (struct inferior
*inf
, void *args
)
2467 struct thread_info
*thread
;
2469 thread
= any_thread_of_process (inf
->pid
);
2472 switch_to_thread (thread
->ptid
);
2474 /* Core inferiors actually should be detached, not killed. */
2475 if (target_has_execution
)
2478 target_detach (NULL
, 0);
2484 /* This is to be called by the open routine before it does
2488 target_preopen (int from_tty
)
2492 if (have_inferiors ())
2495 || !have_live_inferiors ()
2496 || query (_("A program is being debugged already. Kill it? ")))
2497 iterate_over_inferiors (dispose_inferior
, NULL
);
2499 error (_("Program not killed."));
2502 /* Calling target_kill may remove the target from the stack. But if
2503 it doesn't (which seems like a win for UDI), remove it now. */
2504 /* Leave the exec target, though. The user may be switching from a
2505 live process to a core of the same program. */
2506 pop_all_targets_above (file_stratum
);
2508 target_pre_inferior (from_tty
);
2511 /* Detach a target after doing deferred register stores. */
2514 target_detach (const char *args
, int from_tty
)
2516 struct target_ops
* t
;
2518 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2519 /* Don't remove global breakpoints here. They're removed on
2520 disconnection from the target. */
2523 /* If we're in breakpoints-always-inserted mode, have to remove
2524 them before detaching. */
2525 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2527 prepare_for_detach ();
2529 current_target
.to_detach (¤t_target
, args
, from_tty
);
2531 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2536 target_disconnect (char *args
, int from_tty
)
2538 struct target_ops
*t
;
2540 /* If we're in breakpoints-always-inserted mode or if breakpoints
2541 are global across processes, we have to remove them before
2543 remove_breakpoints ();
2545 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2546 if (t
->to_disconnect
!= NULL
)
2549 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2551 t
->to_disconnect (t
, args
, from_tty
);
2559 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2561 struct target_ops
*t
;
2562 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2567 char *status_string
;
2568 char *options_string
;
2570 status_string
= target_waitstatus_to_string (status
);
2571 options_string
= target_options_to_string (options
);
2572 fprintf_unfiltered (gdb_stdlog
,
2573 "target_wait (%d, status, options={%s})"
2575 ptid_get_pid (ptid
), options_string
,
2576 ptid_get_pid (retval
), status_string
);
2577 xfree (status_string
);
2578 xfree (options_string
);
2585 target_pid_to_str (ptid_t ptid
)
2587 struct target_ops
*t
;
2589 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2591 if (t
->to_pid_to_str
!= NULL
)
2592 return (*t
->to_pid_to_str
) (t
, ptid
);
2595 return normal_pid_to_str (ptid
);
2599 target_thread_name (struct thread_info
*info
)
2601 return current_target
.to_thread_name (¤t_target
, info
);
2605 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2607 struct target_ops
*t
;
2609 target_dcache_invalidate ();
2611 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2613 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2614 ptid_get_pid (ptid
),
2615 step
? "step" : "continue",
2616 gdb_signal_to_name (signal
));
2618 registers_changed_ptid (ptid
);
2619 set_executing (ptid
, 1);
2620 set_running (ptid
, 1);
2621 clear_inline_frame_state (ptid
);
2625 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2627 struct target_ops
*t
;
2629 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2631 if (t
->to_pass_signals
!= NULL
)
2637 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2640 for (i
= 0; i
< numsigs
; i
++)
2641 if (pass_signals
[i
])
2642 fprintf_unfiltered (gdb_stdlog
, " %s",
2643 gdb_signal_to_name (i
));
2645 fprintf_unfiltered (gdb_stdlog
, " })\n");
2648 (*t
->to_pass_signals
) (t
, numsigs
, pass_signals
);
2655 target_program_signals (int numsigs
, unsigned char *program_signals
)
2657 struct target_ops
*t
;
2659 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2661 if (t
->to_program_signals
!= NULL
)
2667 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2670 for (i
= 0; i
< numsigs
; i
++)
2671 if (program_signals
[i
])
2672 fprintf_unfiltered (gdb_stdlog
, " %s",
2673 gdb_signal_to_name (i
));
2675 fprintf_unfiltered (gdb_stdlog
, " })\n");
2678 (*t
->to_program_signals
) (t
, numsigs
, program_signals
);
2684 /* Look through the list of possible targets for a target that can
2688 target_follow_fork (int follow_child
, int detach_fork
)
2690 struct target_ops
*t
;
2692 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2694 if (t
->to_follow_fork
!= NULL
)
2696 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2699 fprintf_unfiltered (gdb_stdlog
,
2700 "target_follow_fork (%d, %d) = %d\n",
2701 follow_child
, detach_fork
, retval
);
2706 /* Some target returned a fork event, but did not know how to follow it. */
2707 internal_error (__FILE__
, __LINE__
,
2708 _("could not find a target to follow fork"));
2712 target_mourn_inferior (void)
2714 struct target_ops
*t
;
2716 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2718 if (t
->to_mourn_inferior
!= NULL
)
2720 t
->to_mourn_inferior (t
);
2722 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2724 /* We no longer need to keep handles on any of the object files.
2725 Make sure to release them to avoid unnecessarily locking any
2726 of them while we're not actually debugging. */
2727 bfd_cache_close_all ();
2733 internal_error (__FILE__
, __LINE__
,
2734 _("could not find a target to follow mourn inferior"));
2737 /* Look for a target which can describe architectural features, starting
2738 from TARGET. If we find one, return its description. */
2740 const struct target_desc
*
2741 target_read_description (struct target_ops
*target
)
2743 struct target_ops
*t
;
2745 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2746 if (t
->to_read_description
!= NULL
)
2748 const struct target_desc
*tdesc
;
2750 tdesc
= t
->to_read_description (t
);
2758 /* The default implementation of to_search_memory.
2759 This implements a basic search of memory, reading target memory and
2760 performing the search here (as opposed to performing the search in on the
2761 target side with, for example, gdbserver). */
2764 simple_search_memory (struct target_ops
*ops
,
2765 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2766 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2767 CORE_ADDR
*found_addrp
)
2769 /* NOTE: also defined in find.c testcase. */
2770 #define SEARCH_CHUNK_SIZE 16000
2771 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2772 /* Buffer to hold memory contents for searching. */
2773 gdb_byte
*search_buf
;
2774 unsigned search_buf_size
;
2775 struct cleanup
*old_cleanups
;
2777 search_buf_size
= chunk_size
+ pattern_len
- 1;
2779 /* No point in trying to allocate a buffer larger than the search space. */
2780 if (search_space_len
< search_buf_size
)
2781 search_buf_size
= search_space_len
;
2783 search_buf
= malloc (search_buf_size
);
2784 if (search_buf
== NULL
)
2785 error (_("Unable to allocate memory to perform the search."));
2786 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2788 /* Prime the search buffer. */
2790 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2791 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2793 warning (_("Unable to access %s bytes of target "
2794 "memory at %s, halting search."),
2795 pulongest (search_buf_size
), hex_string (start_addr
));
2796 do_cleanups (old_cleanups
);
2800 /* Perform the search.
2802 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2803 When we've scanned N bytes we copy the trailing bytes to the start and
2804 read in another N bytes. */
2806 while (search_space_len
>= pattern_len
)
2808 gdb_byte
*found_ptr
;
2809 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2811 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2812 pattern
, pattern_len
);
2814 if (found_ptr
!= NULL
)
2816 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2818 *found_addrp
= found_addr
;
2819 do_cleanups (old_cleanups
);
2823 /* Not found in this chunk, skip to next chunk. */
2825 /* Don't let search_space_len wrap here, it's unsigned. */
2826 if (search_space_len
>= chunk_size
)
2827 search_space_len
-= chunk_size
;
2829 search_space_len
= 0;
2831 if (search_space_len
>= pattern_len
)
2833 unsigned keep_len
= search_buf_size
- chunk_size
;
2834 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2837 /* Copy the trailing part of the previous iteration to the front
2838 of the buffer for the next iteration. */
2839 gdb_assert (keep_len
== pattern_len
- 1);
2840 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2842 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2844 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2845 search_buf
+ keep_len
, read_addr
,
2846 nr_to_read
) != nr_to_read
)
2848 warning (_("Unable to access %s bytes of target "
2849 "memory at %s, halting search."),
2850 plongest (nr_to_read
),
2851 hex_string (read_addr
));
2852 do_cleanups (old_cleanups
);
2856 start_addr
+= chunk_size
;
2862 do_cleanups (old_cleanups
);
2866 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2867 sequence of bytes in PATTERN with length PATTERN_LEN.
2869 The result is 1 if found, 0 if not found, and -1 if there was an error
2870 requiring halting of the search (e.g. memory read error).
2871 If the pattern is found the address is recorded in FOUND_ADDRP. */
2874 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2875 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2876 CORE_ADDR
*found_addrp
)
2878 struct target_ops
*t
;
2881 /* We don't use INHERIT to set current_target.to_search_memory,
2882 so we have to scan the target stack and handle targetdebug
2886 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2887 hex_string (start_addr
));
2889 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2890 if (t
->to_search_memory
!= NULL
)
2895 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2896 pattern
, pattern_len
, found_addrp
);
2900 /* If a special version of to_search_memory isn't available, use the
2902 found
= simple_search_memory (current_target
.beneath
,
2903 start_addr
, search_space_len
,
2904 pattern
, pattern_len
, found_addrp
);
2908 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2913 /* Look through the currently pushed targets. If none of them will
2914 be able to restart the currently running process, issue an error
2918 target_require_runnable (void)
2920 struct target_ops
*t
;
2922 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2924 /* If this target knows how to create a new program, then
2925 assume we will still be able to after killing the current
2926 one. Either killing and mourning will not pop T, or else
2927 find_default_run_target will find it again. */
2928 if (t
->to_create_inferior
!= NULL
)
2931 /* Do not worry about thread_stratum targets that can not
2932 create inferiors. Assume they will be pushed again if
2933 necessary, and continue to the process_stratum. */
2934 if (t
->to_stratum
== thread_stratum
2935 || t
->to_stratum
== arch_stratum
)
2938 error (_("The \"%s\" target does not support \"run\". "
2939 "Try \"help target\" or \"continue\"."),
2943 /* This function is only called if the target is running. In that
2944 case there should have been a process_stratum target and it
2945 should either know how to create inferiors, or not... */
2946 internal_error (__FILE__
, __LINE__
, _("No targets found"));
2949 /* Look through the list of possible targets for a target that can
2950 execute a run or attach command without any other data. This is
2951 used to locate the default process stratum.
2953 If DO_MESG is not NULL, the result is always valid (error() is
2954 called for errors); else, return NULL on error. */
2956 static struct target_ops
*
2957 find_default_run_target (char *do_mesg
)
2959 struct target_ops
**t
;
2960 struct target_ops
*runable
= NULL
;
2965 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2968 if ((*t
)->to_can_run
&& target_can_run (*t
))
2978 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
2987 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
2989 struct target_ops
*t
;
2991 t
= find_default_run_target ("attach");
2992 (t
->to_attach
) (t
, args
, from_tty
);
2997 find_default_create_inferior (struct target_ops
*ops
,
2998 char *exec_file
, char *allargs
, char **env
,
3001 struct target_ops
*t
;
3003 t
= find_default_run_target ("run");
3004 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3009 find_default_can_async_p (struct target_ops
*ignore
)
3011 struct target_ops
*t
;
3013 /* This may be called before the target is pushed on the stack;
3014 look for the default process stratum. If there's none, gdb isn't
3015 configured with a native debugger, and target remote isn't
3017 t
= find_default_run_target (NULL
);
3018 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
3019 return (t
->to_can_async_p
) (t
);
3024 find_default_is_async_p (struct target_ops
*ignore
)
3026 struct target_ops
*t
;
3028 /* This may be called before the target is pushed on the stack;
3029 look for the default process stratum. If there's none, gdb isn't
3030 configured with a native debugger, and target remote isn't
3032 t
= find_default_run_target (NULL
);
3033 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
3034 return (t
->to_is_async_p
) (t
);
3039 find_default_supports_non_stop (struct target_ops
*self
)
3041 struct target_ops
*t
;
3043 t
= find_default_run_target (NULL
);
3044 if (t
&& t
->to_supports_non_stop
)
3045 return (t
->to_supports_non_stop
) (t
);
3050 target_supports_non_stop (void)
3052 struct target_ops
*t
;
3054 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3055 if (t
->to_supports_non_stop
)
3056 return t
->to_supports_non_stop (t
);
3061 /* Implement the "info proc" command. */
3064 target_info_proc (char *args
, enum info_proc_what what
)
3066 struct target_ops
*t
;
3068 /* If we're already connected to something that can get us OS
3069 related data, use it. Otherwise, try using the native
3071 if (current_target
.to_stratum
>= process_stratum
)
3072 t
= current_target
.beneath
;
3074 t
= find_default_run_target (NULL
);
3076 for (; t
!= NULL
; t
= t
->beneath
)
3078 if (t
->to_info_proc
!= NULL
)
3080 t
->to_info_proc (t
, args
, what
);
3083 fprintf_unfiltered (gdb_stdlog
,
3084 "target_info_proc (\"%s\", %d)\n", args
, what
);
3094 find_default_supports_disable_randomization (struct target_ops
*self
)
3096 struct target_ops
*t
;
3098 t
= find_default_run_target (NULL
);
3099 if (t
&& t
->to_supports_disable_randomization
)
3100 return (t
->to_supports_disable_randomization
) (t
);
3105 target_supports_disable_randomization (void)
3107 struct target_ops
*t
;
3109 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3110 if (t
->to_supports_disable_randomization
)
3111 return t
->to_supports_disable_randomization (t
);
3117 target_get_osdata (const char *type
)
3119 struct target_ops
*t
;
3121 /* If we're already connected to something that can get us OS
3122 related data, use it. Otherwise, try using the native
3124 if (current_target
.to_stratum
>= process_stratum
)
3125 t
= current_target
.beneath
;
3127 t
= find_default_run_target ("get OS data");
3132 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3135 /* Determine the current address space of thread PTID. */
3137 struct address_space
*
3138 target_thread_address_space (ptid_t ptid
)
3140 struct address_space
*aspace
;
3141 struct inferior
*inf
;
3142 struct target_ops
*t
;
3144 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3146 if (t
->to_thread_address_space
!= NULL
)
3148 aspace
= t
->to_thread_address_space (t
, ptid
);
3149 gdb_assert (aspace
);
3152 fprintf_unfiltered (gdb_stdlog
,
3153 "target_thread_address_space (%s) = %d\n",
3154 target_pid_to_str (ptid
),
3155 address_space_num (aspace
));
3160 /* Fall-back to the "main" address space of the inferior. */
3161 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3163 if (inf
== NULL
|| inf
->aspace
== NULL
)
3164 internal_error (__FILE__
, __LINE__
,
3165 _("Can't determine the current "
3166 "address space of thread %s\n"),
3167 target_pid_to_str (ptid
));
3173 /* Target file operations. */
3175 static struct target_ops
*
3176 default_fileio_target (void)
3178 /* If we're already connected to something that can perform
3179 file I/O, use it. Otherwise, try using the native target. */
3180 if (current_target
.to_stratum
>= process_stratum
)
3181 return current_target
.beneath
;
3183 return find_default_run_target ("file I/O");
3186 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3187 target file descriptor, or -1 if an error occurs (and set
3190 target_fileio_open (const char *filename
, int flags
, int mode
,
3193 struct target_ops
*t
;
3195 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3197 if (t
->to_fileio_open
!= NULL
)
3199 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3202 fprintf_unfiltered (gdb_stdlog
,
3203 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3204 filename
, flags
, mode
,
3205 fd
, fd
!= -1 ? 0 : *target_errno
);
3210 *target_errno
= FILEIO_ENOSYS
;
3214 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3215 Return the number of bytes written, or -1 if an error occurs
3216 (and set *TARGET_ERRNO). */
3218 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3219 ULONGEST offset
, int *target_errno
)
3221 struct target_ops
*t
;
3223 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3225 if (t
->to_fileio_pwrite
!= NULL
)
3227 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3231 fprintf_unfiltered (gdb_stdlog
,
3232 "target_fileio_pwrite (%d,...,%d,%s) "
3234 fd
, len
, pulongest (offset
),
3235 ret
, ret
!= -1 ? 0 : *target_errno
);
3240 *target_errno
= FILEIO_ENOSYS
;
3244 /* Read up to LEN bytes FD on the target into READ_BUF.
3245 Return the number of bytes read, or -1 if an error occurs
3246 (and set *TARGET_ERRNO). */
3248 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3249 ULONGEST offset
, int *target_errno
)
3251 struct target_ops
*t
;
3253 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3255 if (t
->to_fileio_pread
!= NULL
)
3257 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3261 fprintf_unfiltered (gdb_stdlog
,
3262 "target_fileio_pread (%d,...,%d,%s) "
3264 fd
, len
, pulongest (offset
),
3265 ret
, ret
!= -1 ? 0 : *target_errno
);
3270 *target_errno
= FILEIO_ENOSYS
;
3274 /* Close FD on the target. Return 0, or -1 if an error occurs
3275 (and set *TARGET_ERRNO). */
3277 target_fileio_close (int fd
, int *target_errno
)
3279 struct target_ops
*t
;
3281 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3283 if (t
->to_fileio_close
!= NULL
)
3285 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3288 fprintf_unfiltered (gdb_stdlog
,
3289 "target_fileio_close (%d) = %d (%d)\n",
3290 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3295 *target_errno
= FILEIO_ENOSYS
;
3299 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3300 occurs (and set *TARGET_ERRNO). */
3302 target_fileio_unlink (const char *filename
, int *target_errno
)
3304 struct target_ops
*t
;
3306 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3308 if (t
->to_fileio_unlink
!= NULL
)
3310 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3313 fprintf_unfiltered (gdb_stdlog
,
3314 "target_fileio_unlink (%s) = %d (%d)\n",
3315 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3320 *target_errno
= FILEIO_ENOSYS
;
3324 /* Read value of symbolic link FILENAME on the target. Return a
3325 null-terminated string allocated via xmalloc, or NULL if an error
3326 occurs (and set *TARGET_ERRNO). */
3328 target_fileio_readlink (const char *filename
, int *target_errno
)
3330 struct target_ops
*t
;
3332 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3334 if (t
->to_fileio_readlink
!= NULL
)
3336 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3339 fprintf_unfiltered (gdb_stdlog
,
3340 "target_fileio_readlink (%s) = %s (%d)\n",
3341 filename
, ret
? ret
: "(nil)",
3342 ret
? 0 : *target_errno
);
3347 *target_errno
= FILEIO_ENOSYS
;
3352 target_fileio_close_cleanup (void *opaque
)
3354 int fd
= *(int *) opaque
;
3357 target_fileio_close (fd
, &target_errno
);
3360 /* Read target file FILENAME. Store the result in *BUF_P and
3361 return the size of the transferred data. PADDING additional bytes are
3362 available in *BUF_P. This is a helper function for
3363 target_fileio_read_alloc; see the declaration of that function for more
3367 target_fileio_read_alloc_1 (const char *filename
,
3368 gdb_byte
**buf_p
, int padding
)
3370 struct cleanup
*close_cleanup
;
3371 size_t buf_alloc
, buf_pos
;
3377 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3381 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3383 /* Start by reading up to 4K at a time. The target will throttle
3384 this number down if necessary. */
3386 buf
= xmalloc (buf_alloc
);
3390 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3391 buf_alloc
- buf_pos
- padding
, buf_pos
,
3395 /* An error occurred. */
3396 do_cleanups (close_cleanup
);
3402 /* Read all there was. */
3403 do_cleanups (close_cleanup
);
3413 /* If the buffer is filling up, expand it. */
3414 if (buf_alloc
< buf_pos
* 2)
3417 buf
= xrealloc (buf
, buf_alloc
);
3424 /* Read target file FILENAME. Store the result in *BUF_P and return
3425 the size of the transferred data. See the declaration in "target.h"
3426 function for more information about the return value. */
3429 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3431 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3434 /* Read target file FILENAME. The result is NUL-terminated and
3435 returned as a string, allocated using xmalloc. If an error occurs
3436 or the transfer is unsupported, NULL is returned. Empty objects
3437 are returned as allocated but empty strings. A warning is issued
3438 if the result contains any embedded NUL bytes. */
3441 target_fileio_read_stralloc (const char *filename
)
3445 LONGEST i
, transferred
;
3447 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3448 bufstr
= (char *) buffer
;
3450 if (transferred
< 0)
3453 if (transferred
== 0)
3454 return xstrdup ("");
3456 bufstr
[transferred
] = 0;
3458 /* Check for embedded NUL bytes; but allow trailing NULs. */
3459 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3462 warning (_("target file %s "
3463 "contained unexpected null characters"),
3473 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3474 CORE_ADDR addr
, int len
)
3476 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3480 default_watchpoint_addr_within_range (struct target_ops
*target
,
3482 CORE_ADDR start
, int length
)
3484 return addr
>= start
&& addr
< start
+ length
;
3487 static struct gdbarch
*
3488 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3490 return target_gdbarch ();
3506 * Find the next target down the stack from the specified target.
3510 find_target_beneath (struct target_ops
*t
)
3518 find_target_at (enum strata stratum
)
3520 struct target_ops
*t
;
3522 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3523 if (t
->to_stratum
== stratum
)
3530 /* The inferior process has died. Long live the inferior! */
3533 generic_mourn_inferior (void)
3537 ptid
= inferior_ptid
;
3538 inferior_ptid
= null_ptid
;
3540 /* Mark breakpoints uninserted in case something tries to delete a
3541 breakpoint while we delete the inferior's threads (which would
3542 fail, since the inferior is long gone). */
3543 mark_breakpoints_out ();
3545 if (!ptid_equal (ptid
, null_ptid
))
3547 int pid
= ptid_get_pid (ptid
);
3548 exit_inferior (pid
);
3551 /* Note this wipes step-resume breakpoints, so needs to be done
3552 after exit_inferior, which ends up referencing the step-resume
3553 breakpoints through clear_thread_inferior_resources. */
3554 breakpoint_init_inferior (inf_exited
);
3556 registers_changed ();
3558 reopen_exec_file ();
3559 reinit_frame_cache ();
3561 if (deprecated_detach_hook
)
3562 deprecated_detach_hook ();
3565 /* Convert a normal process ID to a string. Returns the string in a
3569 normal_pid_to_str (ptid_t ptid
)
3571 static char buf
[32];
3573 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3578 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3580 return normal_pid_to_str (ptid
);
3583 /* Error-catcher for target_find_memory_regions. */
3585 dummy_find_memory_regions (struct target_ops
*self
,
3586 find_memory_region_ftype ignore1
, void *ignore2
)
3588 error (_("Command not implemented for this target."));
3592 /* Error-catcher for target_make_corefile_notes. */
3594 dummy_make_corefile_notes (struct target_ops
*self
,
3595 bfd
*ignore1
, int *ignore2
)
3597 error (_("Command not implemented for this target."));
3601 /* Set up the handful of non-empty slots needed by the dummy target
3605 init_dummy_target (void)
3607 dummy_target
.to_shortname
= "None";
3608 dummy_target
.to_longname
= "None";
3609 dummy_target
.to_doc
= "";
3610 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3611 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3612 dummy_target
.to_supports_disable_randomization
3613 = find_default_supports_disable_randomization
;
3614 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3615 dummy_target
.to_stratum
= dummy_stratum
;
3616 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3617 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3618 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3619 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3620 dummy_target
.to_has_execution
3621 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3622 dummy_target
.to_magic
= OPS_MAGIC
;
3624 install_dummy_methods (&dummy_target
);
3628 debug_to_open (char *args
, int from_tty
)
3630 debug_target
.to_open (args
, from_tty
);
3632 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3636 target_close (struct target_ops
*targ
)
3638 gdb_assert (!target_is_pushed (targ
));
3640 if (targ
->to_xclose
!= NULL
)
3641 targ
->to_xclose (targ
);
3642 else if (targ
->to_close
!= NULL
)
3643 targ
->to_close (targ
);
3646 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3650 target_attach (char *args
, int from_tty
)
3652 current_target
.to_attach (¤t_target
, args
, from_tty
);
3654 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3659 target_thread_alive (ptid_t ptid
)
3661 struct target_ops
*t
;
3663 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3665 if (t
->to_thread_alive
!= NULL
)
3669 retval
= t
->to_thread_alive (t
, ptid
);
3671 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3672 ptid_get_pid (ptid
), retval
);
3682 target_find_new_threads (void)
3684 struct target_ops
*t
;
3686 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3688 if (t
->to_find_new_threads
!= NULL
)
3690 t
->to_find_new_threads (t
);
3692 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3700 target_stop (ptid_t ptid
)
3704 warning (_("May not interrupt or stop the target, ignoring attempt"));
3708 (*current_target
.to_stop
) (¤t_target
, ptid
);
3712 debug_to_post_attach (struct target_ops
*self
, int pid
)
3714 debug_target
.to_post_attach (&debug_target
, pid
);
3716 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3719 /* Concatenate ELEM to LIST, a comma separate list, and return the
3720 result. The LIST incoming argument is released. */
3723 str_comma_list_concat_elem (char *list
, const char *elem
)
3726 return xstrdup (elem
);
3728 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3731 /* Helper for target_options_to_string. If OPT is present in
3732 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3733 Returns the new resulting string. OPT is removed from
3737 do_option (int *target_options
, char *ret
,
3738 int opt
, char *opt_str
)
3740 if ((*target_options
& opt
) != 0)
3742 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3743 *target_options
&= ~opt
;
3750 target_options_to_string (int target_options
)
3754 #define DO_TARG_OPTION(OPT) \
3755 ret = do_option (&target_options, ret, OPT, #OPT)
3757 DO_TARG_OPTION (TARGET_WNOHANG
);
3759 if (target_options
!= 0)
3760 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3768 debug_print_register (const char * func
,
3769 struct regcache
*regcache
, int regno
)
3771 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3773 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3774 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3775 && gdbarch_register_name (gdbarch
, regno
) != NULL
3776 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3777 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3778 gdbarch_register_name (gdbarch
, regno
));
3780 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3781 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3783 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3784 int i
, size
= register_size (gdbarch
, regno
);
3785 gdb_byte buf
[MAX_REGISTER_SIZE
];
3787 regcache_raw_collect (regcache
, regno
, buf
);
3788 fprintf_unfiltered (gdb_stdlog
, " = ");
3789 for (i
= 0; i
< size
; i
++)
3791 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3793 if (size
<= sizeof (LONGEST
))
3795 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3797 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3798 core_addr_to_string_nz (val
), plongest (val
));
3801 fprintf_unfiltered (gdb_stdlog
, "\n");
3805 target_fetch_registers (struct regcache
*regcache
, int regno
)
3807 struct target_ops
*t
;
3809 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3811 if (t
->to_fetch_registers
!= NULL
)
3813 t
->to_fetch_registers (t
, regcache
, regno
);
3815 debug_print_register ("target_fetch_registers", regcache
, regno
);
3822 target_store_registers (struct regcache
*regcache
, int regno
)
3824 struct target_ops
*t
;
3826 if (!may_write_registers
)
3827 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3829 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3832 debug_print_register ("target_store_registers", regcache
, regno
);
3837 target_core_of_thread (ptid_t ptid
)
3839 struct target_ops
*t
;
3841 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3843 if (t
->to_core_of_thread
!= NULL
)
3845 int retval
= t
->to_core_of_thread (t
, ptid
);
3848 fprintf_unfiltered (gdb_stdlog
,
3849 "target_core_of_thread (%d) = %d\n",
3850 ptid_get_pid (ptid
), retval
);
3859 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3861 struct target_ops
*t
;
3863 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3865 if (t
->to_verify_memory
!= NULL
)
3867 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3870 fprintf_unfiltered (gdb_stdlog
,
3871 "target_verify_memory (%s, %s) = %d\n",
3872 paddress (target_gdbarch (), memaddr
),
3882 /* The documentation for this function is in its prototype declaration in
3886 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3888 struct target_ops
*t
;
3890 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3891 if (t
->to_insert_mask_watchpoint
!= NULL
)
3895 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
3898 fprintf_unfiltered (gdb_stdlog
, "\
3899 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3900 core_addr_to_string (addr
),
3901 core_addr_to_string (mask
), rw
, ret
);
3909 /* The documentation for this function is in its prototype declaration in
3913 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3915 struct target_ops
*t
;
3917 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3918 if (t
->to_remove_mask_watchpoint
!= NULL
)
3922 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
3925 fprintf_unfiltered (gdb_stdlog
, "\
3926 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3927 core_addr_to_string (addr
),
3928 core_addr_to_string (mask
), rw
, ret
);
3936 /* The documentation for this function is in its prototype declaration
3940 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
3942 struct target_ops
*t
;
3944 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3945 if (t
->to_masked_watch_num_registers
!= NULL
)
3946 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
3951 /* The documentation for this function is in its prototype declaration
3955 target_ranged_break_num_registers (void)
3957 struct target_ops
*t
;
3959 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3960 if (t
->to_ranged_break_num_registers
!= NULL
)
3961 return t
->to_ranged_break_num_registers (t
);
3968 struct btrace_target_info
*
3969 target_enable_btrace (ptid_t ptid
)
3971 struct target_ops
*t
;
3973 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3974 if (t
->to_enable_btrace
!= NULL
)
3975 return t
->to_enable_btrace (t
, ptid
);
3984 target_disable_btrace (struct btrace_target_info
*btinfo
)
3986 struct target_ops
*t
;
3988 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3989 if (t
->to_disable_btrace
!= NULL
)
3991 t
->to_disable_btrace (t
, btinfo
);
4001 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4003 struct target_ops
*t
;
4005 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4006 if (t
->to_teardown_btrace
!= NULL
)
4008 t
->to_teardown_btrace (t
, btinfo
);
4018 target_read_btrace (VEC (btrace_block_s
) **btrace
,
4019 struct btrace_target_info
*btinfo
,
4020 enum btrace_read_type type
)
4022 struct target_ops
*t
;
4024 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4025 if (t
->to_read_btrace
!= NULL
)
4026 return t
->to_read_btrace (t
, btrace
, btinfo
, type
);
4029 return BTRACE_ERR_NOT_SUPPORTED
;
4035 target_stop_recording (void)
4037 struct target_ops
*t
;
4039 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4040 if (t
->to_stop_recording
!= NULL
)
4042 t
->to_stop_recording (t
);
4046 /* This is optional. */
4052 target_info_record (void)
4054 struct target_ops
*t
;
4056 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4057 if (t
->to_info_record
!= NULL
)
4059 t
->to_info_record (t
);
4069 target_save_record (const char *filename
)
4071 struct target_ops
*t
;
4073 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4074 if (t
->to_save_record
!= NULL
)
4076 t
->to_save_record (t
, filename
);
4086 target_supports_delete_record (void)
4088 struct target_ops
*t
;
4090 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4091 if (t
->to_delete_record
!= NULL
)
4100 target_delete_record (void)
4102 struct target_ops
*t
;
4104 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4105 if (t
->to_delete_record
!= NULL
)
4107 t
->to_delete_record (t
);
4117 target_record_is_replaying (void)
4119 struct target_ops
*t
;
4121 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4122 if (t
->to_record_is_replaying
!= NULL
)
4123 return t
->to_record_is_replaying (t
);
4131 target_goto_record_begin (void)
4133 struct target_ops
*t
;
4135 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4136 if (t
->to_goto_record_begin
!= NULL
)
4138 t
->to_goto_record_begin (t
);
4148 target_goto_record_end (void)
4150 struct target_ops
*t
;
4152 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4153 if (t
->to_goto_record_end
!= NULL
)
4155 t
->to_goto_record_end (t
);
4165 target_goto_record (ULONGEST insn
)
4167 struct target_ops
*t
;
4169 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4170 if (t
->to_goto_record
!= NULL
)
4172 t
->to_goto_record (t
, insn
);
4182 target_insn_history (int size
, int flags
)
4184 struct target_ops
*t
;
4186 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4187 if (t
->to_insn_history
!= NULL
)
4189 t
->to_insn_history (t
, size
, flags
);
4199 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4201 struct target_ops
*t
;
4203 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4204 if (t
->to_insn_history_from
!= NULL
)
4206 t
->to_insn_history_from (t
, from
, size
, flags
);
4216 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4218 struct target_ops
*t
;
4220 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4221 if (t
->to_insn_history_range
!= NULL
)
4223 t
->to_insn_history_range (t
, begin
, end
, flags
);
4233 target_call_history (int size
, int flags
)
4235 struct target_ops
*t
;
4237 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4238 if (t
->to_call_history
!= NULL
)
4240 t
->to_call_history (t
, size
, flags
);
4250 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4252 struct target_ops
*t
;
4254 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4255 if (t
->to_call_history_from
!= NULL
)
4257 t
->to_call_history_from (t
, begin
, size
, flags
);
4267 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4269 struct target_ops
*t
;
4271 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4272 if (t
->to_call_history_range
!= NULL
)
4274 t
->to_call_history_range (t
, begin
, end
, flags
);
4282 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
4284 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
4286 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4291 const struct frame_unwind
*
4292 target_get_unwinder (void)
4294 struct target_ops
*t
;
4296 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4297 if (t
->to_get_unwinder
!= NULL
)
4298 return t
->to_get_unwinder
;
4305 const struct frame_unwind
*
4306 target_get_tailcall_unwinder (void)
4308 struct target_ops
*t
;
4310 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4311 if (t
->to_get_tailcall_unwinder
!= NULL
)
4312 return t
->to_get_tailcall_unwinder
;
4320 forward_target_decr_pc_after_break (struct target_ops
*ops
,
4321 struct gdbarch
*gdbarch
)
4323 for (; ops
!= NULL
; ops
= ops
->beneath
)
4324 if (ops
->to_decr_pc_after_break
!= NULL
)
4325 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
4327 return gdbarch_decr_pc_after_break (gdbarch
);
4333 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
4335 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
4339 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4340 int write
, struct mem_attrib
*attrib
,
4341 struct target_ops
*target
)
4345 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4348 fprintf_unfiltered (gdb_stdlog
,
4349 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4350 paddress (target_gdbarch (), memaddr
), len
,
4351 write
? "write" : "read", retval
);
4357 fputs_unfiltered (", bytes =", gdb_stdlog
);
4358 for (i
= 0; i
< retval
; i
++)
4360 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4362 if (targetdebug
< 2 && i
> 0)
4364 fprintf_unfiltered (gdb_stdlog
, " ...");
4367 fprintf_unfiltered (gdb_stdlog
, "\n");
4370 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4374 fputc_unfiltered ('\n', gdb_stdlog
);
4380 debug_to_files_info (struct target_ops
*target
)
4382 debug_target
.to_files_info (target
);
4384 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4388 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4389 struct bp_target_info
*bp_tgt
)
4393 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4395 fprintf_unfiltered (gdb_stdlog
,
4396 "target_insert_breakpoint (%s, xxx) = %ld\n",
4397 core_addr_to_string (bp_tgt
->placed_address
),
4398 (unsigned long) retval
);
4403 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4404 struct bp_target_info
*bp_tgt
)
4408 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4410 fprintf_unfiltered (gdb_stdlog
,
4411 "target_remove_breakpoint (%s, xxx) = %ld\n",
4412 core_addr_to_string (bp_tgt
->placed_address
),
4413 (unsigned long) retval
);
4418 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4419 int type
, int cnt
, int from_tty
)
4423 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4424 type
, cnt
, from_tty
);
4426 fprintf_unfiltered (gdb_stdlog
,
4427 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4428 (unsigned long) type
,
4429 (unsigned long) cnt
,
4430 (unsigned long) from_tty
,
4431 (unsigned long) retval
);
4436 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4437 CORE_ADDR addr
, int len
)
4441 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4444 fprintf_unfiltered (gdb_stdlog
,
4445 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4446 core_addr_to_string (addr
), (unsigned long) len
,
4447 core_addr_to_string (retval
));
4452 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4453 CORE_ADDR addr
, int len
, int rw
,
4454 struct expression
*cond
)
4458 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4462 fprintf_unfiltered (gdb_stdlog
,
4463 "target_can_accel_watchpoint_condition "
4464 "(%s, %d, %d, %s) = %ld\n",
4465 core_addr_to_string (addr
), len
, rw
,
4466 host_address_to_string (cond
), (unsigned long) retval
);
4471 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4475 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4477 fprintf_unfiltered (gdb_stdlog
,
4478 "target_stopped_by_watchpoint () = %ld\n",
4479 (unsigned long) retval
);
4484 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4488 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4490 fprintf_unfiltered (gdb_stdlog
,
4491 "target_stopped_data_address ([%s]) = %ld\n",
4492 core_addr_to_string (*addr
),
4493 (unsigned long)retval
);
4498 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4500 CORE_ADDR start
, int length
)
4504 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4507 fprintf_filtered (gdb_stdlog
,
4508 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4509 core_addr_to_string (addr
), core_addr_to_string (start
),
4515 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4516 struct gdbarch
*gdbarch
,
4517 struct bp_target_info
*bp_tgt
)
4521 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4524 fprintf_unfiltered (gdb_stdlog
,
4525 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4526 core_addr_to_string (bp_tgt
->placed_address
),
4527 (unsigned long) retval
);
4532 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4533 struct gdbarch
*gdbarch
,
4534 struct bp_target_info
*bp_tgt
)
4538 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4541 fprintf_unfiltered (gdb_stdlog
,
4542 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4543 core_addr_to_string (bp_tgt
->placed_address
),
4544 (unsigned long) retval
);
4549 debug_to_insert_watchpoint (struct target_ops
*self
,
4550 CORE_ADDR addr
, int len
, int type
,
4551 struct expression
*cond
)
4555 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4556 addr
, len
, type
, cond
);
4558 fprintf_unfiltered (gdb_stdlog
,
4559 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4560 core_addr_to_string (addr
), len
, type
,
4561 host_address_to_string (cond
), (unsigned long) retval
);
4566 debug_to_remove_watchpoint (struct target_ops
*self
,
4567 CORE_ADDR addr
, int len
, int type
,
4568 struct expression
*cond
)
4572 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4573 addr
, len
, type
, cond
);
4575 fprintf_unfiltered (gdb_stdlog
,
4576 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4577 core_addr_to_string (addr
), len
, type
,
4578 host_address_to_string (cond
), (unsigned long) retval
);
4583 debug_to_terminal_init (struct target_ops
*self
)
4585 debug_target
.to_terminal_init (&debug_target
);
4587 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4591 debug_to_terminal_inferior (struct target_ops
*self
)
4593 debug_target
.to_terminal_inferior (&debug_target
);
4595 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4599 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4601 debug_target
.to_terminal_ours_for_output (&debug_target
);
4603 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4607 debug_to_terminal_ours (struct target_ops
*self
)
4609 debug_target
.to_terminal_ours (&debug_target
);
4611 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4615 debug_to_terminal_save_ours (struct target_ops
*self
)
4617 debug_target
.to_terminal_save_ours (&debug_target
);
4619 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4623 debug_to_terminal_info (struct target_ops
*self
,
4624 const char *arg
, int from_tty
)
4626 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4628 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4633 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4635 debug_target
.to_load (&debug_target
, args
, from_tty
);
4637 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4641 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4643 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4645 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4646 ptid_get_pid (ptid
));
4650 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4654 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4656 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4663 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4667 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4669 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4676 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4680 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4682 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4689 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4693 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4695 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4702 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4706 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4708 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4715 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4719 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4721 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4728 debug_to_has_exited (struct target_ops
*self
,
4729 int pid
, int wait_status
, int *exit_status
)
4733 has_exited
= debug_target
.to_has_exited (&debug_target
,
4734 pid
, wait_status
, exit_status
);
4736 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4737 pid
, wait_status
, *exit_status
, has_exited
);
4743 debug_to_can_run (struct target_ops
*self
)
4747 retval
= debug_target
.to_can_run (&debug_target
);
4749 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4754 static struct gdbarch
*
4755 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4757 struct gdbarch
*retval
;
4759 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4761 fprintf_unfiltered (gdb_stdlog
,
4762 "target_thread_architecture (%s) = %s [%s]\n",
4763 target_pid_to_str (ptid
),
4764 host_address_to_string (retval
),
4765 gdbarch_bfd_arch_info (retval
)->printable_name
);
4770 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4772 debug_target
.to_stop (&debug_target
, ptid
);
4774 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4775 target_pid_to_str (ptid
));
4779 debug_to_rcmd (struct target_ops
*self
, char *command
,
4780 struct ui_file
*outbuf
)
4782 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4783 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4787 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4791 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4793 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4800 setup_target_debug (void)
4802 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4804 current_target
.to_open
= debug_to_open
;
4805 current_target
.to_post_attach
= debug_to_post_attach
;
4806 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4807 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4808 current_target
.to_files_info
= debug_to_files_info
;
4809 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4810 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4811 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4812 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4813 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4814 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4815 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4816 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4817 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4818 current_target
.to_watchpoint_addr_within_range
4819 = debug_to_watchpoint_addr_within_range
;
4820 current_target
.to_region_ok_for_hw_watchpoint
4821 = debug_to_region_ok_for_hw_watchpoint
;
4822 current_target
.to_can_accel_watchpoint_condition
4823 = debug_to_can_accel_watchpoint_condition
;
4824 current_target
.to_terminal_init
= debug_to_terminal_init
;
4825 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4826 current_target
.to_terminal_ours_for_output
4827 = debug_to_terminal_ours_for_output
;
4828 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4829 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4830 current_target
.to_terminal_info
= debug_to_terminal_info
;
4831 current_target
.to_load
= debug_to_load
;
4832 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4833 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4834 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4835 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4836 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4837 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4838 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4839 current_target
.to_has_exited
= debug_to_has_exited
;
4840 current_target
.to_can_run
= debug_to_can_run
;
4841 current_target
.to_stop
= debug_to_stop
;
4842 current_target
.to_rcmd
= debug_to_rcmd
;
4843 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4844 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4848 static char targ_desc
[] =
4849 "Names of targets and files being debugged.\nShows the entire \
4850 stack of targets currently in use (including the exec-file,\n\
4851 core-file, and process, if any), as well as the symbol file name.";
4854 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4856 error (_("\"monitor\" command not supported by this target."));
4860 do_monitor_command (char *cmd
,
4863 target_rcmd (cmd
, gdb_stdtarg
);
4866 /* Print the name of each layers of our target stack. */
4869 maintenance_print_target_stack (char *cmd
, int from_tty
)
4871 struct target_ops
*t
;
4873 printf_filtered (_("The current target stack is:\n"));
4875 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4877 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4881 /* Controls if async mode is permitted. */
4882 int target_async_permitted
= 0;
4884 /* The set command writes to this variable. If the inferior is
4885 executing, target_async_permitted is *not* updated. */
4886 static int target_async_permitted_1
= 0;
4889 set_target_async_command (char *args
, int from_tty
,
4890 struct cmd_list_element
*c
)
4892 if (have_live_inferiors ())
4894 target_async_permitted_1
= target_async_permitted
;
4895 error (_("Cannot change this setting while the inferior is running."));
4898 target_async_permitted
= target_async_permitted_1
;
4902 show_target_async_command (struct ui_file
*file
, int from_tty
,
4903 struct cmd_list_element
*c
,
4906 fprintf_filtered (file
,
4907 _("Controlling the inferior in "
4908 "asynchronous mode is %s.\n"), value
);
4911 /* Temporary copies of permission settings. */
4913 static int may_write_registers_1
= 1;
4914 static int may_write_memory_1
= 1;
4915 static int may_insert_breakpoints_1
= 1;
4916 static int may_insert_tracepoints_1
= 1;
4917 static int may_insert_fast_tracepoints_1
= 1;
4918 static int may_stop_1
= 1;
4920 /* Make the user-set values match the real values again. */
4923 update_target_permissions (void)
4925 may_write_registers_1
= may_write_registers
;
4926 may_write_memory_1
= may_write_memory
;
4927 may_insert_breakpoints_1
= may_insert_breakpoints
;
4928 may_insert_tracepoints_1
= may_insert_tracepoints
;
4929 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4930 may_stop_1
= may_stop
;
4933 /* The one function handles (most of) the permission flags in the same
4937 set_target_permissions (char *args
, int from_tty
,
4938 struct cmd_list_element
*c
)
4940 if (target_has_execution
)
4942 update_target_permissions ();
4943 error (_("Cannot change this setting while the inferior is running."));
4946 /* Make the real values match the user-changed values. */
4947 may_write_registers
= may_write_registers_1
;
4948 may_insert_breakpoints
= may_insert_breakpoints_1
;
4949 may_insert_tracepoints
= may_insert_tracepoints_1
;
4950 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4951 may_stop
= may_stop_1
;
4952 update_observer_mode ();
4955 /* Set memory write permission independently of observer mode. */
4958 set_write_memory_permission (char *args
, int from_tty
,
4959 struct cmd_list_element
*c
)
4961 /* Make the real values match the user-changed values. */
4962 may_write_memory
= may_write_memory_1
;
4963 update_observer_mode ();
4968 initialize_targets (void)
4970 init_dummy_target ();
4971 push_target (&dummy_target
);
4973 add_info ("target", target_info
, targ_desc
);
4974 add_info ("files", target_info
, targ_desc
);
4976 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
4977 Set target debugging."), _("\
4978 Show target debugging."), _("\
4979 When non-zero, target debugging is enabled. Higher numbers are more\n\
4980 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4984 &setdebuglist
, &showdebuglist
);
4986 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
4987 &trust_readonly
, _("\
4988 Set mode for reading from readonly sections."), _("\
4989 Show mode for reading from readonly sections."), _("\
4990 When this mode is on, memory reads from readonly sections (such as .text)\n\
4991 will be read from the object file instead of from the target. This will\n\
4992 result in significant performance improvement for remote targets."),
4994 show_trust_readonly
,
4995 &setlist
, &showlist
);
4997 add_com ("monitor", class_obscure
, do_monitor_command
,
4998 _("Send a command to the remote monitor (remote targets only)."));
5000 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5001 _("Print the name of each layer of the internal target stack."),
5002 &maintenanceprintlist
);
5004 add_setshow_boolean_cmd ("target-async", no_class
,
5005 &target_async_permitted_1
, _("\
5006 Set whether gdb controls the inferior in asynchronous mode."), _("\
5007 Show whether gdb controls the inferior in asynchronous mode."), _("\
5008 Tells gdb whether to control the inferior in asynchronous mode."),
5009 set_target_async_command
,
5010 show_target_async_command
,
5014 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5015 &may_write_registers_1
, _("\
5016 Set permission to write into registers."), _("\
5017 Show permission to write into registers."), _("\
5018 When this permission is on, GDB may write into the target's registers.\n\
5019 Otherwise, any sort of write attempt will result in an error."),
5020 set_target_permissions
, NULL
,
5021 &setlist
, &showlist
);
5023 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5024 &may_write_memory_1
, _("\
5025 Set permission to write into target memory."), _("\
5026 Show permission to write into target memory."), _("\
5027 When this permission is on, GDB may write into the target's memory.\n\
5028 Otherwise, any sort of write attempt will result in an error."),
5029 set_write_memory_permission
, NULL
,
5030 &setlist
, &showlist
);
5032 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5033 &may_insert_breakpoints_1
, _("\
5034 Set permission to insert breakpoints in the target."), _("\
5035 Show permission to insert breakpoints in the target."), _("\
5036 When this permission is on, GDB may insert breakpoints in the program.\n\
5037 Otherwise, any sort of insertion attempt will result in an error."),
5038 set_target_permissions
, NULL
,
5039 &setlist
, &showlist
);
5041 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5042 &may_insert_tracepoints_1
, _("\
5043 Set permission to insert tracepoints in the target."), _("\
5044 Show permission to insert tracepoints in the target."), _("\
5045 When this permission is on, GDB may insert tracepoints in the program.\n\
5046 Otherwise, any sort of insertion attempt will result in an error."),
5047 set_target_permissions
, NULL
,
5048 &setlist
, &showlist
);
5050 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5051 &may_insert_fast_tracepoints_1
, _("\
5052 Set permission to insert fast tracepoints in the target."), _("\
5053 Show permission to insert fast tracepoints in the target."), _("\
5054 When this permission is on, GDB may insert fast tracepoints.\n\
5055 Otherwise, any sort of insertion attempt will result in an error."),
5056 set_target_permissions
, NULL
,
5057 &setlist
, &showlist
);
5059 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5061 Set permission to interrupt or signal the target."), _("\
5062 Show permission to interrupt or signal the target."), _("\
5063 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5064 Otherwise, any attempt to interrupt or stop will be ignored."),
5065 set_target_permissions
, NULL
,
5066 &setlist
, &showlist
);