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 INHERIT (to_set_trace_buffer_size
, t
);
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_buffer_size
,
754 (void (*) (struct target_ops
*, LONGEST
))
756 de_fault (to_set_trace_notes
,
757 (int (*) (struct target_ops
*,
758 const char *, const char *, const char *))
760 de_fault (to_get_tib_address
,
761 (int (*) (struct target_ops
*, ptid_t
, CORE_ADDR
*))
763 de_fault (to_set_permissions
,
764 (void (*) (struct target_ops
*))
766 de_fault (to_static_tracepoint_marker_at
,
767 (int (*) (struct target_ops
*,
768 CORE_ADDR
, struct static_tracepoint_marker
*))
770 de_fault (to_static_tracepoint_markers_by_strid
,
771 (VEC(static_tracepoint_marker_p
) * (*) (struct target_ops
*,
774 de_fault (to_traceframe_info
,
775 (struct traceframe_info
* (*) (struct target_ops
*))
777 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
778 (int (*) (struct target_ops
*))
780 de_fault (to_can_run_breakpoint_commands
,
781 (int (*) (struct target_ops
*))
783 de_fault (to_use_agent
,
784 (int (*) (struct target_ops
*, int))
786 de_fault (to_can_use_agent
,
787 (int (*) (struct target_ops
*))
789 de_fault (to_augmented_libraries_svr4_read
,
790 (int (*) (struct target_ops
*))
795 /* Finally, position the target-stack beneath the squashed
796 "current_target". That way code looking for a non-inherited
797 target method can quickly and simply find it. */
798 current_target
.beneath
= target_stack
;
801 setup_target_debug ();
804 /* Push a new target type into the stack of the existing target accessors,
805 possibly superseding some of the existing accessors.
807 Rather than allow an empty stack, we always have the dummy target at
808 the bottom stratum, so we can call the function vectors without
812 push_target (struct target_ops
*t
)
814 struct target_ops
**cur
;
816 /* Check magic number. If wrong, it probably means someone changed
817 the struct definition, but not all the places that initialize one. */
818 if (t
->to_magic
!= OPS_MAGIC
)
820 fprintf_unfiltered (gdb_stderr
,
821 "Magic number of %s target struct wrong\n",
823 internal_error (__FILE__
, __LINE__
,
824 _("failed internal consistency check"));
827 /* Find the proper stratum to install this target in. */
828 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
830 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
834 /* If there's already targets at this stratum, remove them. */
835 /* FIXME: cagney/2003-10-15: I think this should be popping all
836 targets to CUR, and not just those at this stratum level. */
837 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
839 /* There's already something at this stratum level. Close it,
840 and un-hook it from the stack. */
841 struct target_ops
*tmp
= (*cur
);
843 (*cur
) = (*cur
)->beneath
;
848 /* We have removed all targets in our stratum, now add the new one. */
852 update_current_target ();
855 /* Remove a target_ops vector from the stack, wherever it may be.
856 Return how many times it was removed (0 or 1). */
859 unpush_target (struct target_ops
*t
)
861 struct target_ops
**cur
;
862 struct target_ops
*tmp
;
864 if (t
->to_stratum
== dummy_stratum
)
865 internal_error (__FILE__
, __LINE__
,
866 _("Attempt to unpush the dummy target"));
868 /* Look for the specified target. Note that we assume that a target
869 can only occur once in the target stack. */
871 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
877 /* If we don't find target_ops, quit. Only open targets should be
882 /* Unchain the target. */
884 (*cur
) = (*cur
)->beneath
;
887 update_current_target ();
889 /* Finally close the target. Note we do this after unchaining, so
890 any target method calls from within the target_close
891 implementation don't end up in T anymore. */
898 pop_all_targets_above (enum strata above_stratum
)
900 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
902 if (!unpush_target (target_stack
))
904 fprintf_unfiltered (gdb_stderr
,
905 "pop_all_targets couldn't find target %s\n",
906 target_stack
->to_shortname
);
907 internal_error (__FILE__
, __LINE__
,
908 _("failed internal consistency check"));
915 pop_all_targets (void)
917 pop_all_targets_above (dummy_stratum
);
920 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
923 target_is_pushed (struct target_ops
*t
)
925 struct target_ops
**cur
;
927 /* Check magic number. If wrong, it probably means someone changed
928 the struct definition, but not all the places that initialize one. */
929 if (t
->to_magic
!= OPS_MAGIC
)
931 fprintf_unfiltered (gdb_stderr
,
932 "Magic number of %s target struct wrong\n",
934 internal_error (__FILE__
, __LINE__
,
935 _("failed internal consistency check"));
938 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
945 /* Using the objfile specified in OBJFILE, find the address for the
946 current thread's thread-local storage with offset OFFSET. */
948 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
950 volatile CORE_ADDR addr
= 0;
951 struct target_ops
*target
;
953 for (target
= current_target
.beneath
;
955 target
= target
->beneath
)
957 if (target
->to_get_thread_local_address
!= NULL
)
962 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
964 ptid_t ptid
= inferior_ptid
;
965 volatile struct gdb_exception ex
;
967 TRY_CATCH (ex
, RETURN_MASK_ALL
)
971 /* Fetch the load module address for this objfile. */
972 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
974 /* If it's 0, throw the appropriate exception. */
976 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
977 _("TLS load module not found"));
979 addr
= target
->to_get_thread_local_address (target
, ptid
,
982 /* If an error occurred, print TLS related messages here. Otherwise,
983 throw the error to some higher catcher. */
986 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
990 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
991 error (_("Cannot find thread-local variables "
992 "in this thread library."));
994 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
995 if (objfile_is_library
)
996 error (_("Cannot find shared library `%s' in dynamic"
997 " linker's load module list"), objfile_name (objfile
));
999 error (_("Cannot find executable file `%s' in dynamic"
1000 " linker's load module list"), objfile_name (objfile
));
1002 case TLS_NOT_ALLOCATED_YET_ERROR
:
1003 if (objfile_is_library
)
1004 error (_("The inferior has not yet allocated storage for"
1005 " thread-local variables in\n"
1006 "the shared library `%s'\n"
1008 objfile_name (objfile
), target_pid_to_str (ptid
));
1010 error (_("The inferior has not yet allocated storage for"
1011 " thread-local variables in\n"
1012 "the executable `%s'\n"
1014 objfile_name (objfile
), target_pid_to_str (ptid
));
1016 case TLS_GENERIC_ERROR
:
1017 if (objfile_is_library
)
1018 error (_("Cannot find thread-local storage for %s, "
1019 "shared library %s:\n%s"),
1020 target_pid_to_str (ptid
),
1021 objfile_name (objfile
), ex
.message
);
1023 error (_("Cannot find thread-local storage for %s, "
1024 "executable file %s:\n%s"),
1025 target_pid_to_str (ptid
),
1026 objfile_name (objfile
), ex
.message
);
1029 throw_exception (ex
);
1034 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1035 TLS is an ABI-specific thing. But we don't do that yet. */
1037 error (_("Cannot find thread-local variables on this target"));
1043 target_xfer_status_to_string (enum target_xfer_status err
)
1045 #define CASE(X) case X: return #X
1048 CASE(TARGET_XFER_E_IO
);
1049 CASE(TARGET_XFER_E_UNAVAILABLE
);
1058 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1060 /* target_read_string -- read a null terminated string, up to LEN bytes,
1061 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1062 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1063 is responsible for freeing it. Return the number of bytes successfully
1067 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1069 int tlen
, offset
, i
;
1073 int buffer_allocated
;
1075 unsigned int nbytes_read
= 0;
1077 gdb_assert (string
);
1079 /* Small for testing. */
1080 buffer_allocated
= 4;
1081 buffer
= xmalloc (buffer_allocated
);
1086 tlen
= MIN (len
, 4 - (memaddr
& 3));
1087 offset
= memaddr
& 3;
1089 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1092 /* The transfer request might have crossed the boundary to an
1093 unallocated region of memory. Retry the transfer, requesting
1097 errcode
= target_read_memory (memaddr
, buf
, 1);
1102 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1106 bytes
= bufptr
- buffer
;
1107 buffer_allocated
*= 2;
1108 buffer
= xrealloc (buffer
, buffer_allocated
);
1109 bufptr
= buffer
+ bytes
;
1112 for (i
= 0; i
< tlen
; i
++)
1114 *bufptr
++ = buf
[i
+ offset
];
1115 if (buf
[i
+ offset
] == '\000')
1117 nbytes_read
+= i
+ 1;
1124 nbytes_read
+= tlen
;
1133 struct target_section_table
*
1134 target_get_section_table (struct target_ops
*target
)
1136 struct target_ops
*t
;
1139 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1141 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1142 if (t
->to_get_section_table
!= NULL
)
1143 return (*t
->to_get_section_table
) (t
);
1148 /* Find a section containing ADDR. */
1150 struct target_section
*
1151 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1153 struct target_section_table
*table
= target_get_section_table (target
);
1154 struct target_section
*secp
;
1159 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1161 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1167 /* Read memory from the live target, even if currently inspecting a
1168 traceframe. The return is the same as that of target_read. */
1170 static enum target_xfer_status
1171 target_read_live_memory (enum target_object object
,
1172 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1173 ULONGEST
*xfered_len
)
1175 enum target_xfer_status ret
;
1176 struct cleanup
*cleanup
;
1178 /* Switch momentarily out of tfind mode so to access live memory.
1179 Note that this must not clear global state, such as the frame
1180 cache, which must still remain valid for the previous traceframe.
1181 We may be _building_ the frame cache at this point. */
1182 cleanup
= make_cleanup_restore_traceframe_number ();
1183 set_traceframe_number (-1);
1185 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1186 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1188 do_cleanups (cleanup
);
1192 /* Using the set of read-only target sections of OPS, read live
1193 read-only memory. Note that the actual reads start from the
1194 top-most target again.
1196 For interface/parameters/return description see target.h,
1199 static enum target_xfer_status
1200 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1201 enum target_object object
,
1202 gdb_byte
*readbuf
, ULONGEST memaddr
,
1203 ULONGEST len
, ULONGEST
*xfered_len
)
1205 struct target_section
*secp
;
1206 struct target_section_table
*table
;
1208 secp
= target_section_by_addr (ops
, memaddr
);
1210 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1211 secp
->the_bfd_section
)
1214 struct target_section
*p
;
1215 ULONGEST memend
= memaddr
+ len
;
1217 table
= target_get_section_table (ops
);
1219 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1221 if (memaddr
>= p
->addr
)
1223 if (memend
<= p
->endaddr
)
1225 /* Entire transfer is within this section. */
1226 return target_read_live_memory (object
, memaddr
,
1227 readbuf
, len
, xfered_len
);
1229 else if (memaddr
>= p
->endaddr
)
1231 /* This section ends before the transfer starts. */
1236 /* This section overlaps the transfer. Just do half. */
1237 len
= p
->endaddr
- memaddr
;
1238 return target_read_live_memory (object
, memaddr
,
1239 readbuf
, len
, xfered_len
);
1245 return TARGET_XFER_EOF
;
1248 /* Read memory from more than one valid target. A core file, for
1249 instance, could have some of memory but delegate other bits to
1250 the target below it. So, we must manually try all targets. */
1252 static enum target_xfer_status
1253 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1254 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1255 ULONGEST
*xfered_len
)
1257 enum target_xfer_status res
;
1261 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1262 readbuf
, writebuf
, memaddr
, len
,
1264 if (res
== TARGET_XFER_OK
)
1267 /* Stop if the target reports that the memory is not available. */
1268 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1271 /* We want to continue past core files to executables, but not
1272 past a running target's memory. */
1273 if (ops
->to_has_all_memory (ops
))
1278 while (ops
!= NULL
);
1283 /* Perform a partial memory transfer.
1284 For docs see target.h, to_xfer_partial. */
1286 static enum target_xfer_status
1287 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1288 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1289 ULONGEST len
, ULONGEST
*xfered_len
)
1291 enum target_xfer_status res
;
1293 struct mem_region
*region
;
1294 struct inferior
*inf
;
1296 /* For accesses to unmapped overlay sections, read directly from
1297 files. Must do this first, as MEMADDR may need adjustment. */
1298 if (readbuf
!= NULL
&& overlay_debugging
)
1300 struct obj_section
*section
= find_pc_overlay (memaddr
);
1302 if (pc_in_unmapped_range (memaddr
, section
))
1304 struct target_section_table
*table
1305 = target_get_section_table (ops
);
1306 const char *section_name
= section
->the_bfd_section
->name
;
1308 memaddr
= overlay_mapped_address (memaddr
, section
);
1309 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1310 memaddr
, len
, xfered_len
,
1312 table
->sections_end
,
1317 /* Try the executable files, if "trust-readonly-sections" is set. */
1318 if (readbuf
!= NULL
&& trust_readonly
)
1320 struct target_section
*secp
;
1321 struct target_section_table
*table
;
1323 secp
= target_section_by_addr (ops
, memaddr
);
1325 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1326 secp
->the_bfd_section
)
1329 table
= target_get_section_table (ops
);
1330 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1331 memaddr
, len
, xfered_len
,
1333 table
->sections_end
,
1338 /* If reading unavailable memory in the context of traceframes, and
1339 this address falls within a read-only section, fallback to
1340 reading from live memory. */
1341 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1343 VEC(mem_range_s
) *available
;
1345 /* If we fail to get the set of available memory, then the
1346 target does not support querying traceframe info, and so we
1347 attempt reading from the traceframe anyway (assuming the
1348 target implements the old QTro packet then). */
1349 if (traceframe_available_memory (&available
, memaddr
, len
))
1351 struct cleanup
*old_chain
;
1353 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1355 if (VEC_empty (mem_range_s
, available
)
1356 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1358 /* Don't read into the traceframe's available
1360 if (!VEC_empty (mem_range_s
, available
))
1362 LONGEST oldlen
= len
;
1364 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1365 gdb_assert (len
<= oldlen
);
1368 do_cleanups (old_chain
);
1370 /* This goes through the topmost target again. */
1371 res
= memory_xfer_live_readonly_partial (ops
, object
,
1374 if (res
== TARGET_XFER_OK
)
1375 return TARGET_XFER_OK
;
1378 /* No use trying further, we know some memory starting
1379 at MEMADDR isn't available. */
1381 return TARGET_XFER_E_UNAVAILABLE
;
1385 /* Don't try to read more than how much is available, in
1386 case the target implements the deprecated QTro packet to
1387 cater for older GDBs (the target's knowledge of read-only
1388 sections may be outdated by now). */
1389 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1391 do_cleanups (old_chain
);
1395 /* Try GDB's internal data cache. */
1396 region
= lookup_mem_region (memaddr
);
1397 /* region->hi == 0 means there's no upper bound. */
1398 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1401 reg_len
= region
->hi
- memaddr
;
1403 switch (region
->attrib
.mode
)
1406 if (writebuf
!= NULL
)
1407 return TARGET_XFER_E_IO
;
1411 if (readbuf
!= NULL
)
1412 return TARGET_XFER_E_IO
;
1416 /* We only support writing to flash during "load" for now. */
1417 if (writebuf
!= NULL
)
1418 error (_("Writing to flash memory forbidden in this context"));
1422 return TARGET_XFER_E_IO
;
1425 if (!ptid_equal (inferior_ptid
, null_ptid
))
1426 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1431 /* The dcache reads whole cache lines; that doesn't play well
1432 with reading from a trace buffer, because reading outside of
1433 the collected memory range fails. */
1434 && get_traceframe_number () == -1
1435 && (region
->attrib
.cache
1436 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1437 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1439 DCACHE
*dcache
= target_dcache_get_or_init ();
1442 if (readbuf
!= NULL
)
1443 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1445 /* FIXME drow/2006-08-09: If we're going to preserve const
1446 correctness dcache_xfer_memory should take readbuf and
1448 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1451 return TARGET_XFER_E_IO
;
1454 *xfered_len
= (ULONGEST
) l
;
1455 return TARGET_XFER_OK
;
1459 /* If none of those methods found the memory we wanted, fall back
1460 to a target partial transfer. Normally a single call to
1461 to_xfer_partial is enough; if it doesn't recognize an object
1462 it will call the to_xfer_partial of the next target down.
1463 But for memory this won't do. Memory is the only target
1464 object which can be read from more than one valid target.
1465 A core file, for instance, could have some of memory but
1466 delegate other bits to the target below it. So, we must
1467 manually try all targets. */
1469 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1472 /* Make sure the cache gets updated no matter what - if we are writing
1473 to the stack. Even if this write is not tagged as such, we still need
1474 to update the cache. */
1476 if (res
== TARGET_XFER_OK
1479 && target_dcache_init_p ()
1480 && !region
->attrib
.cache
1481 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1482 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1484 DCACHE
*dcache
= target_dcache_get ();
1486 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1489 /* If we still haven't got anything, return the last error. We
1494 /* Perform a partial memory transfer. For docs see target.h,
1497 static enum target_xfer_status
1498 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1499 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1500 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1502 enum target_xfer_status res
;
1504 /* Zero length requests are ok and require no work. */
1506 return TARGET_XFER_EOF
;
1508 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1509 breakpoint insns, thus hiding out from higher layers whether
1510 there are software breakpoints inserted in the code stream. */
1511 if (readbuf
!= NULL
)
1513 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1516 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1517 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1522 struct cleanup
*old_chain
;
1524 /* A large write request is likely to be partially satisfied
1525 by memory_xfer_partial_1. We will continually malloc
1526 and free a copy of the entire write request for breakpoint
1527 shadow handling even though we only end up writing a small
1528 subset of it. Cap writes to 4KB to mitigate this. */
1529 len
= min (4096, len
);
1531 buf
= xmalloc (len
);
1532 old_chain
= make_cleanup (xfree
, buf
);
1533 memcpy (buf
, writebuf
, len
);
1535 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1536 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1539 do_cleanups (old_chain
);
1546 restore_show_memory_breakpoints (void *arg
)
1548 show_memory_breakpoints
= (uintptr_t) arg
;
1552 make_show_memory_breakpoints_cleanup (int show
)
1554 int current
= show_memory_breakpoints
;
1556 show_memory_breakpoints
= show
;
1557 return make_cleanup (restore_show_memory_breakpoints
,
1558 (void *) (uintptr_t) current
);
1561 /* For docs see target.h, to_xfer_partial. */
1563 enum target_xfer_status
1564 target_xfer_partial (struct target_ops
*ops
,
1565 enum target_object object
, const char *annex
,
1566 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1567 ULONGEST offset
, ULONGEST len
,
1568 ULONGEST
*xfered_len
)
1570 enum target_xfer_status retval
;
1572 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1574 /* Transfer is done when LEN is zero. */
1576 return TARGET_XFER_EOF
;
1578 if (writebuf
&& !may_write_memory
)
1579 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1580 core_addr_to_string_nz (offset
), plongest (len
));
1584 /* If this is a memory transfer, let the memory-specific code
1585 have a look at it instead. Memory transfers are more
1587 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1588 || object
== TARGET_OBJECT_CODE_MEMORY
)
1589 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1590 writebuf
, offset
, len
, xfered_len
);
1591 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1593 /* Request the normal memory object from other layers. */
1594 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1598 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1599 writebuf
, offset
, len
, xfered_len
);
1603 const unsigned char *myaddr
= NULL
;
1605 fprintf_unfiltered (gdb_stdlog
,
1606 "%s:target_xfer_partial "
1607 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1610 (annex
? annex
: "(null)"),
1611 host_address_to_string (readbuf
),
1612 host_address_to_string (writebuf
),
1613 core_addr_to_string_nz (offset
),
1614 pulongest (len
), retval
,
1615 pulongest (*xfered_len
));
1621 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1625 fputs_unfiltered (", bytes =", gdb_stdlog
);
1626 for (i
= 0; i
< *xfered_len
; i
++)
1628 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1630 if (targetdebug
< 2 && i
> 0)
1632 fprintf_unfiltered (gdb_stdlog
, " ...");
1635 fprintf_unfiltered (gdb_stdlog
, "\n");
1638 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1642 fputc_unfiltered ('\n', gdb_stdlog
);
1645 /* Check implementations of to_xfer_partial update *XFERED_LEN
1646 properly. Do assertion after printing debug messages, so that we
1647 can find more clues on assertion failure from debugging messages. */
1648 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1649 gdb_assert (*xfered_len
> 0);
1654 /* Read LEN bytes of target memory at address MEMADDR, placing the
1655 results in GDB's memory at MYADDR. Returns either 0 for success or
1656 TARGET_XFER_E_IO if any error occurs.
1658 If an error occurs, no guarantee is made about the contents of the data at
1659 MYADDR. In particular, the caller should not depend upon partial reads
1660 filling the buffer with good data. There is no way for the caller to know
1661 how much good data might have been transfered anyway. Callers that can
1662 deal with partial reads should call target_read (which will retry until
1663 it makes no progress, and then return how much was transferred). */
1666 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1668 /* Dispatch to the topmost target, not the flattened current_target.
1669 Memory accesses check target->to_has_(all_)memory, and the
1670 flattened target doesn't inherit those. */
1671 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1672 myaddr
, memaddr
, len
) == len
)
1675 return TARGET_XFER_E_IO
;
1678 /* Like target_read_memory, but specify explicitly that this is a read
1679 from the target's raw memory. That is, this read bypasses the
1680 dcache, breakpoint shadowing, etc. */
1683 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1685 /* See comment in target_read_memory about why the request starts at
1686 current_target.beneath. */
1687 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1688 myaddr
, memaddr
, len
) == len
)
1691 return TARGET_XFER_E_IO
;
1694 /* Like target_read_memory, but specify explicitly that this is a read from
1695 the target's stack. This may trigger different cache behavior. */
1698 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1700 /* See comment in target_read_memory about why the request starts at
1701 current_target.beneath. */
1702 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1703 myaddr
, memaddr
, len
) == len
)
1706 return TARGET_XFER_E_IO
;
1709 /* Like target_read_memory, but specify explicitly that this is a read from
1710 the target's code. This may trigger different cache behavior. */
1713 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1715 /* See comment in target_read_memory about why the request starts at
1716 current_target.beneath. */
1717 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1718 myaddr
, memaddr
, len
) == len
)
1721 return TARGET_XFER_E_IO
;
1724 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1725 Returns either 0 for success or TARGET_XFER_E_IO if any
1726 error occurs. If an error occurs, no guarantee is made about how
1727 much data got written. Callers that can deal with partial writes
1728 should call target_write. */
1731 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1733 /* See comment in target_read_memory about why the request starts at
1734 current_target.beneath. */
1735 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1736 myaddr
, memaddr
, len
) == len
)
1739 return TARGET_XFER_E_IO
;
1742 /* Write LEN bytes from MYADDR to target raw memory at address
1743 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1744 if any error occurs. If an error occurs, no guarantee is made
1745 about how much data got written. Callers that can deal with
1746 partial writes should call target_write. */
1749 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1751 /* See comment in target_read_memory about why the request starts at
1752 current_target.beneath. */
1753 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1754 myaddr
, memaddr
, len
) == len
)
1757 return TARGET_XFER_E_IO
;
1760 /* Fetch the target's memory map. */
1763 target_memory_map (void)
1765 VEC(mem_region_s
) *result
;
1766 struct mem_region
*last_one
, *this_one
;
1768 struct target_ops
*t
;
1771 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1773 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1774 if (t
->to_memory_map
!= NULL
)
1780 result
= t
->to_memory_map (t
);
1784 qsort (VEC_address (mem_region_s
, result
),
1785 VEC_length (mem_region_s
, result
),
1786 sizeof (struct mem_region
), mem_region_cmp
);
1788 /* Check that regions do not overlap. Simultaneously assign
1789 a numbering for the "mem" commands to use to refer to
1792 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1794 this_one
->number
= ix
;
1796 if (last_one
&& last_one
->hi
> this_one
->lo
)
1798 warning (_("Overlapping regions in memory map: ignoring"));
1799 VEC_free (mem_region_s
, result
);
1802 last_one
= this_one
;
1809 target_flash_erase (ULONGEST address
, LONGEST length
)
1811 struct target_ops
*t
;
1813 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1814 if (t
->to_flash_erase
!= NULL
)
1817 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1818 hex_string (address
), phex (length
, 0));
1819 t
->to_flash_erase (t
, address
, length
);
1827 target_flash_done (void)
1829 struct target_ops
*t
;
1831 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1832 if (t
->to_flash_done
!= NULL
)
1835 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1836 t
->to_flash_done (t
);
1844 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1845 struct cmd_list_element
*c
, const char *value
)
1847 fprintf_filtered (file
,
1848 _("Mode for reading from readonly sections is %s.\n"),
1852 /* More generic transfers. */
1854 static enum target_xfer_status
1855 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1856 const char *annex
, gdb_byte
*readbuf
,
1857 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1858 ULONGEST
*xfered_len
)
1860 if (object
== TARGET_OBJECT_MEMORY
1861 && ops
->deprecated_xfer_memory
!= NULL
)
1862 /* If available, fall back to the target's
1863 "deprecated_xfer_memory" method. */
1868 if (writebuf
!= NULL
)
1870 void *buffer
= xmalloc (len
);
1871 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1873 memcpy (buffer
, writebuf
, len
);
1874 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1875 1/*write*/, NULL
, ops
);
1876 do_cleanups (cleanup
);
1878 if (readbuf
!= NULL
)
1879 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1880 0/*read*/, NULL
, ops
);
1883 *xfered_len
= (ULONGEST
) xfered
;
1884 return TARGET_XFER_E_IO
;
1886 else if (xfered
== 0 && errno
== 0)
1887 /* "deprecated_xfer_memory" uses 0, cross checked against
1888 ERRNO as one indication of an error. */
1889 return TARGET_XFER_EOF
;
1891 return TARGET_XFER_E_IO
;
1895 gdb_assert (ops
->beneath
!= NULL
);
1896 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1897 readbuf
, writebuf
, offset
, len
,
1902 /* Target vector read/write partial wrapper functions. */
1904 static enum target_xfer_status
1905 target_read_partial (struct target_ops
*ops
,
1906 enum target_object object
,
1907 const char *annex
, gdb_byte
*buf
,
1908 ULONGEST offset
, ULONGEST len
,
1909 ULONGEST
*xfered_len
)
1911 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
1915 static enum target_xfer_status
1916 target_write_partial (struct target_ops
*ops
,
1917 enum target_object object
,
1918 const char *annex
, const gdb_byte
*buf
,
1919 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
1921 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
1925 /* Wrappers to perform the full transfer. */
1927 /* For docs on target_read see target.h. */
1930 target_read (struct target_ops
*ops
,
1931 enum target_object object
,
1932 const char *annex
, gdb_byte
*buf
,
1933 ULONGEST offset
, LONGEST len
)
1937 while (xfered
< len
)
1939 ULONGEST xfered_len
;
1940 enum target_xfer_status status
;
1942 status
= target_read_partial (ops
, object
, annex
,
1943 (gdb_byte
*) buf
+ xfered
,
1944 offset
+ xfered
, len
- xfered
,
1947 /* Call an observer, notifying them of the xfer progress? */
1948 if (status
== TARGET_XFER_EOF
)
1950 else if (status
== TARGET_XFER_OK
)
1952 xfered
+= xfered_len
;
1962 /* Assuming that the entire [begin, end) range of memory cannot be
1963 read, try to read whatever subrange is possible to read.
1965 The function returns, in RESULT, either zero or one memory block.
1966 If there's a readable subrange at the beginning, it is completely
1967 read and returned. Any further readable subrange will not be read.
1968 Otherwise, if there's a readable subrange at the end, it will be
1969 completely read and returned. Any readable subranges before it
1970 (obviously, not starting at the beginning), will be ignored. In
1971 other cases -- either no readable subrange, or readable subrange(s)
1972 that is neither at the beginning, or end, nothing is returned.
1974 The purpose of this function is to handle a read across a boundary
1975 of accessible memory in a case when memory map is not available.
1976 The above restrictions are fine for this case, but will give
1977 incorrect results if the memory is 'patchy'. However, supporting
1978 'patchy' memory would require trying to read every single byte,
1979 and it seems unacceptable solution. Explicit memory map is
1980 recommended for this case -- and target_read_memory_robust will
1981 take care of reading multiple ranges then. */
1984 read_whatever_is_readable (struct target_ops
*ops
,
1985 ULONGEST begin
, ULONGEST end
,
1986 VEC(memory_read_result_s
) **result
)
1988 gdb_byte
*buf
= xmalloc (end
- begin
);
1989 ULONGEST current_begin
= begin
;
1990 ULONGEST current_end
= end
;
1992 memory_read_result_s r
;
1993 ULONGEST xfered_len
;
1995 /* If we previously failed to read 1 byte, nothing can be done here. */
1996 if (end
- begin
<= 1)
2002 /* Check that either first or the last byte is readable, and give up
2003 if not. This heuristic is meant to permit reading accessible memory
2004 at the boundary of accessible region. */
2005 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2006 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
2011 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2012 buf
+ (end
-begin
) - 1, end
- 1, 1,
2013 &xfered_len
) == TARGET_XFER_OK
)
2024 /* Loop invariant is that the [current_begin, current_end) was previously
2025 found to be not readable as a whole.
2027 Note loop condition -- if the range has 1 byte, we can't divide the range
2028 so there's no point trying further. */
2029 while (current_end
- current_begin
> 1)
2031 ULONGEST first_half_begin
, first_half_end
;
2032 ULONGEST second_half_begin
, second_half_end
;
2034 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2038 first_half_begin
= current_begin
;
2039 first_half_end
= middle
;
2040 second_half_begin
= middle
;
2041 second_half_end
= current_end
;
2045 first_half_begin
= middle
;
2046 first_half_end
= current_end
;
2047 second_half_begin
= current_begin
;
2048 second_half_end
= middle
;
2051 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2052 buf
+ (first_half_begin
- begin
),
2054 first_half_end
- first_half_begin
);
2056 if (xfer
== first_half_end
- first_half_begin
)
2058 /* This half reads up fine. So, the error must be in the
2060 current_begin
= second_half_begin
;
2061 current_end
= second_half_end
;
2065 /* This half is not readable. Because we've tried one byte, we
2066 know some part of this half if actually redable. Go to the next
2067 iteration to divide again and try to read.
2069 We don't handle the other half, because this function only tries
2070 to read a single readable subrange. */
2071 current_begin
= first_half_begin
;
2072 current_end
= first_half_end
;
2078 /* The [begin, current_begin) range has been read. */
2080 r
.end
= current_begin
;
2085 /* The [current_end, end) range has been read. */
2086 LONGEST rlen
= end
- current_end
;
2088 r
.data
= xmalloc (rlen
);
2089 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2090 r
.begin
= current_end
;
2094 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2098 free_memory_read_result_vector (void *x
)
2100 VEC(memory_read_result_s
) *v
= x
;
2101 memory_read_result_s
*current
;
2104 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2106 xfree (current
->data
);
2108 VEC_free (memory_read_result_s
, v
);
2111 VEC(memory_read_result_s
) *
2112 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2114 VEC(memory_read_result_s
) *result
= 0;
2117 while (xfered
< len
)
2119 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2122 /* If there is no explicit region, a fake one should be created. */
2123 gdb_assert (region
);
2125 if (region
->hi
== 0)
2126 rlen
= len
- xfered
;
2128 rlen
= region
->hi
- offset
;
2130 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2132 /* Cannot read this region. Note that we can end up here only
2133 if the region is explicitly marked inaccessible, or
2134 'inaccessible-by-default' is in effect. */
2139 LONGEST to_read
= min (len
- xfered
, rlen
);
2140 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2142 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2143 (gdb_byte
*) buffer
,
2144 offset
+ xfered
, to_read
);
2145 /* Call an observer, notifying them of the xfer progress? */
2148 /* Got an error reading full chunk. See if maybe we can read
2151 read_whatever_is_readable (ops
, offset
+ xfered
,
2152 offset
+ xfered
+ to_read
, &result
);
2157 struct memory_read_result r
;
2159 r
.begin
= offset
+ xfered
;
2160 r
.end
= r
.begin
+ xfer
;
2161 VEC_safe_push (memory_read_result_s
, result
, &r
);
2171 /* An alternative to target_write with progress callbacks. */
2174 target_write_with_progress (struct target_ops
*ops
,
2175 enum target_object object
,
2176 const char *annex
, const gdb_byte
*buf
,
2177 ULONGEST offset
, LONGEST len
,
2178 void (*progress
) (ULONGEST
, void *), void *baton
)
2182 /* Give the progress callback a chance to set up. */
2184 (*progress
) (0, baton
);
2186 while (xfered
< len
)
2188 ULONGEST xfered_len
;
2189 enum target_xfer_status status
;
2191 status
= target_write_partial (ops
, object
, annex
,
2192 (gdb_byte
*) buf
+ xfered
,
2193 offset
+ xfered
, len
- xfered
,
2196 if (status
== TARGET_XFER_EOF
)
2198 if (TARGET_XFER_STATUS_ERROR_P (status
))
2201 gdb_assert (status
== TARGET_XFER_OK
);
2203 (*progress
) (xfered_len
, baton
);
2205 xfered
+= xfered_len
;
2211 /* For docs on target_write see target.h. */
2214 target_write (struct target_ops
*ops
,
2215 enum target_object object
,
2216 const char *annex
, const gdb_byte
*buf
,
2217 ULONGEST offset
, LONGEST len
)
2219 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2223 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2224 the size of the transferred data. PADDING additional bytes are
2225 available in *BUF_P. This is a helper function for
2226 target_read_alloc; see the declaration of that function for more
2230 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2231 const char *annex
, gdb_byte
**buf_p
, int padding
)
2233 size_t buf_alloc
, buf_pos
;
2236 /* This function does not have a length parameter; it reads the
2237 entire OBJECT). Also, it doesn't support objects fetched partly
2238 from one target and partly from another (in a different stratum,
2239 e.g. a core file and an executable). Both reasons make it
2240 unsuitable for reading memory. */
2241 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2243 /* Start by reading up to 4K at a time. The target will throttle
2244 this number down if necessary. */
2246 buf
= xmalloc (buf_alloc
);
2250 ULONGEST xfered_len
;
2251 enum target_xfer_status status
;
2253 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2254 buf_pos
, buf_alloc
- buf_pos
- padding
,
2257 if (status
== TARGET_XFER_EOF
)
2259 /* Read all there was. */
2266 else if (status
!= TARGET_XFER_OK
)
2268 /* An error occurred. */
2270 return TARGET_XFER_E_IO
;
2273 buf_pos
+= xfered_len
;
2275 /* If the buffer is filling up, expand it. */
2276 if (buf_alloc
< buf_pos
* 2)
2279 buf
= xrealloc (buf
, buf_alloc
);
2286 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2287 the size of the transferred data. See the declaration in "target.h"
2288 function for more information about the return value. */
2291 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2292 const char *annex
, gdb_byte
**buf_p
)
2294 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2297 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2298 returned as a string, allocated using xmalloc. If an error occurs
2299 or the transfer is unsupported, NULL is returned. Empty objects
2300 are returned as allocated but empty strings. A warning is issued
2301 if the result contains any embedded NUL bytes. */
2304 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2309 LONGEST i
, transferred
;
2311 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2312 bufstr
= (char *) buffer
;
2314 if (transferred
< 0)
2317 if (transferred
== 0)
2318 return xstrdup ("");
2320 bufstr
[transferred
] = 0;
2322 /* Check for embedded NUL bytes; but allow trailing NULs. */
2323 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2326 warning (_("target object %d, annex %s, "
2327 "contained unexpected null characters"),
2328 (int) object
, annex
? annex
: "(none)");
2335 /* Memory transfer methods. */
2338 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2341 /* This method is used to read from an alternate, non-current
2342 target. This read must bypass the overlay support (as symbols
2343 don't match this target), and GDB's internal cache (wrong cache
2344 for this target). */
2345 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2347 memory_error (TARGET_XFER_E_IO
, addr
);
2351 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2352 int len
, enum bfd_endian byte_order
)
2354 gdb_byte buf
[sizeof (ULONGEST
)];
2356 gdb_assert (len
<= sizeof (buf
));
2357 get_target_memory (ops
, addr
, buf
, len
);
2358 return extract_unsigned_integer (buf
, len
, byte_order
);
2364 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2365 struct bp_target_info
*bp_tgt
)
2367 if (!may_insert_breakpoints
)
2369 warning (_("May not insert breakpoints"));
2373 return current_target
.to_insert_breakpoint (¤t_target
,
2380 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2381 struct bp_target_info
*bp_tgt
)
2383 /* This is kind of a weird case to handle, but the permission might
2384 have been changed after breakpoints were inserted - in which case
2385 we should just take the user literally and assume that any
2386 breakpoints should be left in place. */
2387 if (!may_insert_breakpoints
)
2389 warning (_("May not remove breakpoints"));
2393 return current_target
.to_remove_breakpoint (¤t_target
,
2398 target_info (char *args
, int from_tty
)
2400 struct target_ops
*t
;
2401 int has_all_mem
= 0;
2403 if (symfile_objfile
!= NULL
)
2404 printf_unfiltered (_("Symbols from \"%s\".\n"),
2405 objfile_name (symfile_objfile
));
2407 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2409 if (!(*t
->to_has_memory
) (t
))
2412 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2415 printf_unfiltered (_("\tWhile running this, "
2416 "GDB does not access memory from...\n"));
2417 printf_unfiltered ("%s:\n", t
->to_longname
);
2418 (t
->to_files_info
) (t
);
2419 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2423 /* This function is called before any new inferior is created, e.g.
2424 by running a program, attaching, or connecting to a target.
2425 It cleans up any state from previous invocations which might
2426 change between runs. This is a subset of what target_preopen
2427 resets (things which might change between targets). */
2430 target_pre_inferior (int from_tty
)
2432 /* Clear out solib state. Otherwise the solib state of the previous
2433 inferior might have survived and is entirely wrong for the new
2434 target. This has been observed on GNU/Linux using glibc 2.3. How
2446 Cannot access memory at address 0xdeadbeef
2449 /* In some OSs, the shared library list is the same/global/shared
2450 across inferiors. If code is shared between processes, so are
2451 memory regions and features. */
2452 if (!gdbarch_has_global_solist (target_gdbarch ()))
2454 no_shared_libraries (NULL
, from_tty
);
2456 invalidate_target_mem_regions ();
2458 target_clear_description ();
2461 agent_capability_invalidate ();
2464 /* Callback for iterate_over_inferiors. Gets rid of the given
2468 dispose_inferior (struct inferior
*inf
, void *args
)
2470 struct thread_info
*thread
;
2472 thread
= any_thread_of_process (inf
->pid
);
2475 switch_to_thread (thread
->ptid
);
2477 /* Core inferiors actually should be detached, not killed. */
2478 if (target_has_execution
)
2481 target_detach (NULL
, 0);
2487 /* This is to be called by the open routine before it does
2491 target_preopen (int from_tty
)
2495 if (have_inferiors ())
2498 || !have_live_inferiors ()
2499 || query (_("A program is being debugged already. Kill it? ")))
2500 iterate_over_inferiors (dispose_inferior
, NULL
);
2502 error (_("Program not killed."));
2505 /* Calling target_kill may remove the target from the stack. But if
2506 it doesn't (which seems like a win for UDI), remove it now. */
2507 /* Leave the exec target, though. The user may be switching from a
2508 live process to a core of the same program. */
2509 pop_all_targets_above (file_stratum
);
2511 target_pre_inferior (from_tty
);
2514 /* Detach a target after doing deferred register stores. */
2517 target_detach (const char *args
, int from_tty
)
2519 struct target_ops
* t
;
2521 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2522 /* Don't remove global breakpoints here. They're removed on
2523 disconnection from the target. */
2526 /* If we're in breakpoints-always-inserted mode, have to remove
2527 them before detaching. */
2528 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2530 prepare_for_detach ();
2532 current_target
.to_detach (¤t_target
, args
, from_tty
);
2534 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2539 target_disconnect (char *args
, int from_tty
)
2541 struct target_ops
*t
;
2543 /* If we're in breakpoints-always-inserted mode or if breakpoints
2544 are global across processes, we have to remove them before
2546 remove_breakpoints ();
2548 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2549 if (t
->to_disconnect
!= NULL
)
2552 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2554 t
->to_disconnect (t
, args
, from_tty
);
2562 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2564 struct target_ops
*t
;
2565 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2570 char *status_string
;
2571 char *options_string
;
2573 status_string
= target_waitstatus_to_string (status
);
2574 options_string
= target_options_to_string (options
);
2575 fprintf_unfiltered (gdb_stdlog
,
2576 "target_wait (%d, status, options={%s})"
2578 ptid_get_pid (ptid
), options_string
,
2579 ptid_get_pid (retval
), status_string
);
2580 xfree (status_string
);
2581 xfree (options_string
);
2588 target_pid_to_str (ptid_t ptid
)
2590 struct target_ops
*t
;
2592 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2594 if (t
->to_pid_to_str
!= NULL
)
2595 return (*t
->to_pid_to_str
) (t
, ptid
);
2598 return normal_pid_to_str (ptid
);
2602 target_thread_name (struct thread_info
*info
)
2604 return current_target
.to_thread_name (¤t_target
, info
);
2608 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2610 struct target_ops
*t
;
2612 target_dcache_invalidate ();
2614 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2616 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2617 ptid_get_pid (ptid
),
2618 step
? "step" : "continue",
2619 gdb_signal_to_name (signal
));
2621 registers_changed_ptid (ptid
);
2622 set_executing (ptid
, 1);
2623 set_running (ptid
, 1);
2624 clear_inline_frame_state (ptid
);
2628 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2630 struct target_ops
*t
;
2632 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2634 if (t
->to_pass_signals
!= NULL
)
2640 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2643 for (i
= 0; i
< numsigs
; i
++)
2644 if (pass_signals
[i
])
2645 fprintf_unfiltered (gdb_stdlog
, " %s",
2646 gdb_signal_to_name (i
));
2648 fprintf_unfiltered (gdb_stdlog
, " })\n");
2651 (*t
->to_pass_signals
) (t
, numsigs
, pass_signals
);
2658 target_program_signals (int numsigs
, unsigned char *program_signals
)
2660 struct target_ops
*t
;
2662 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2664 if (t
->to_program_signals
!= NULL
)
2670 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2673 for (i
= 0; i
< numsigs
; i
++)
2674 if (program_signals
[i
])
2675 fprintf_unfiltered (gdb_stdlog
, " %s",
2676 gdb_signal_to_name (i
));
2678 fprintf_unfiltered (gdb_stdlog
, " })\n");
2681 (*t
->to_program_signals
) (t
, numsigs
, program_signals
);
2687 /* Look through the list of possible targets for a target that can
2691 target_follow_fork (int follow_child
, int detach_fork
)
2693 struct target_ops
*t
;
2695 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2697 if (t
->to_follow_fork
!= NULL
)
2699 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2702 fprintf_unfiltered (gdb_stdlog
,
2703 "target_follow_fork (%d, %d) = %d\n",
2704 follow_child
, detach_fork
, retval
);
2709 /* Some target returned a fork event, but did not know how to follow it. */
2710 internal_error (__FILE__
, __LINE__
,
2711 _("could not find a target to follow fork"));
2715 target_mourn_inferior (void)
2717 struct target_ops
*t
;
2719 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2721 if (t
->to_mourn_inferior
!= NULL
)
2723 t
->to_mourn_inferior (t
);
2725 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2727 /* We no longer need to keep handles on any of the object files.
2728 Make sure to release them to avoid unnecessarily locking any
2729 of them while we're not actually debugging. */
2730 bfd_cache_close_all ();
2736 internal_error (__FILE__
, __LINE__
,
2737 _("could not find a target to follow mourn inferior"));
2740 /* Look for a target which can describe architectural features, starting
2741 from TARGET. If we find one, return its description. */
2743 const struct target_desc
*
2744 target_read_description (struct target_ops
*target
)
2746 struct target_ops
*t
;
2748 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2749 if (t
->to_read_description
!= NULL
)
2751 const struct target_desc
*tdesc
;
2753 tdesc
= t
->to_read_description (t
);
2761 /* The default implementation of to_search_memory.
2762 This implements a basic search of memory, reading target memory and
2763 performing the search here (as opposed to performing the search in on the
2764 target side with, for example, gdbserver). */
2767 simple_search_memory (struct target_ops
*ops
,
2768 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2769 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2770 CORE_ADDR
*found_addrp
)
2772 /* NOTE: also defined in find.c testcase. */
2773 #define SEARCH_CHUNK_SIZE 16000
2774 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2775 /* Buffer to hold memory contents for searching. */
2776 gdb_byte
*search_buf
;
2777 unsigned search_buf_size
;
2778 struct cleanup
*old_cleanups
;
2780 search_buf_size
= chunk_size
+ pattern_len
- 1;
2782 /* No point in trying to allocate a buffer larger than the search space. */
2783 if (search_space_len
< search_buf_size
)
2784 search_buf_size
= search_space_len
;
2786 search_buf
= malloc (search_buf_size
);
2787 if (search_buf
== NULL
)
2788 error (_("Unable to allocate memory to perform the search."));
2789 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2791 /* Prime the search buffer. */
2793 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2794 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2796 warning (_("Unable to access %s bytes of target "
2797 "memory at %s, halting search."),
2798 pulongest (search_buf_size
), hex_string (start_addr
));
2799 do_cleanups (old_cleanups
);
2803 /* Perform the search.
2805 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2806 When we've scanned N bytes we copy the trailing bytes to the start and
2807 read in another N bytes. */
2809 while (search_space_len
>= pattern_len
)
2811 gdb_byte
*found_ptr
;
2812 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2814 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2815 pattern
, pattern_len
);
2817 if (found_ptr
!= NULL
)
2819 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2821 *found_addrp
= found_addr
;
2822 do_cleanups (old_cleanups
);
2826 /* Not found in this chunk, skip to next chunk. */
2828 /* Don't let search_space_len wrap here, it's unsigned. */
2829 if (search_space_len
>= chunk_size
)
2830 search_space_len
-= chunk_size
;
2832 search_space_len
= 0;
2834 if (search_space_len
>= pattern_len
)
2836 unsigned keep_len
= search_buf_size
- chunk_size
;
2837 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2840 /* Copy the trailing part of the previous iteration to the front
2841 of the buffer for the next iteration. */
2842 gdb_assert (keep_len
== pattern_len
- 1);
2843 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2845 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2847 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2848 search_buf
+ keep_len
, read_addr
,
2849 nr_to_read
) != nr_to_read
)
2851 warning (_("Unable to access %s bytes of target "
2852 "memory at %s, halting search."),
2853 plongest (nr_to_read
),
2854 hex_string (read_addr
));
2855 do_cleanups (old_cleanups
);
2859 start_addr
+= chunk_size
;
2865 do_cleanups (old_cleanups
);
2869 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2870 sequence of bytes in PATTERN with length PATTERN_LEN.
2872 The result is 1 if found, 0 if not found, and -1 if there was an error
2873 requiring halting of the search (e.g. memory read error).
2874 If the pattern is found the address is recorded in FOUND_ADDRP. */
2877 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2878 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2879 CORE_ADDR
*found_addrp
)
2881 struct target_ops
*t
;
2884 /* We don't use INHERIT to set current_target.to_search_memory,
2885 so we have to scan the target stack and handle targetdebug
2889 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2890 hex_string (start_addr
));
2892 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2893 if (t
->to_search_memory
!= NULL
)
2898 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2899 pattern
, pattern_len
, found_addrp
);
2903 /* If a special version of to_search_memory isn't available, use the
2905 found
= simple_search_memory (current_target
.beneath
,
2906 start_addr
, search_space_len
,
2907 pattern
, pattern_len
, found_addrp
);
2911 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2916 /* Look through the currently pushed targets. If none of them will
2917 be able to restart the currently running process, issue an error
2921 target_require_runnable (void)
2923 struct target_ops
*t
;
2925 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2927 /* If this target knows how to create a new program, then
2928 assume we will still be able to after killing the current
2929 one. Either killing and mourning will not pop T, or else
2930 find_default_run_target will find it again. */
2931 if (t
->to_create_inferior
!= NULL
)
2934 /* Do not worry about thread_stratum targets that can not
2935 create inferiors. Assume they will be pushed again if
2936 necessary, and continue to the process_stratum. */
2937 if (t
->to_stratum
== thread_stratum
2938 || t
->to_stratum
== arch_stratum
)
2941 error (_("The \"%s\" target does not support \"run\". "
2942 "Try \"help target\" or \"continue\"."),
2946 /* This function is only called if the target is running. In that
2947 case there should have been a process_stratum target and it
2948 should either know how to create inferiors, or not... */
2949 internal_error (__FILE__
, __LINE__
, _("No targets found"));
2952 /* Look through the list of possible targets for a target that can
2953 execute a run or attach command without any other data. This is
2954 used to locate the default process stratum.
2956 If DO_MESG is not NULL, the result is always valid (error() is
2957 called for errors); else, return NULL on error. */
2959 static struct target_ops
*
2960 find_default_run_target (char *do_mesg
)
2962 struct target_ops
**t
;
2963 struct target_ops
*runable
= NULL
;
2968 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2971 if ((*t
)->to_can_run
&& target_can_run (*t
))
2981 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
2990 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
2992 struct target_ops
*t
;
2994 t
= find_default_run_target ("attach");
2995 (t
->to_attach
) (t
, args
, from_tty
);
3000 find_default_create_inferior (struct target_ops
*ops
,
3001 char *exec_file
, char *allargs
, char **env
,
3004 struct target_ops
*t
;
3006 t
= find_default_run_target ("run");
3007 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3012 find_default_can_async_p (struct target_ops
*ignore
)
3014 struct target_ops
*t
;
3016 /* This may be called before the target is pushed on the stack;
3017 look for the default process stratum. If there's none, gdb isn't
3018 configured with a native debugger, and target remote isn't
3020 t
= find_default_run_target (NULL
);
3021 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
3022 return (t
->to_can_async_p
) (t
);
3027 find_default_is_async_p (struct target_ops
*ignore
)
3029 struct target_ops
*t
;
3031 /* This may be called before the target is pushed on the stack;
3032 look for the default process stratum. If there's none, gdb isn't
3033 configured with a native debugger, and target remote isn't
3035 t
= find_default_run_target (NULL
);
3036 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
3037 return (t
->to_is_async_p
) (t
);
3042 find_default_supports_non_stop (struct target_ops
*self
)
3044 struct target_ops
*t
;
3046 t
= find_default_run_target (NULL
);
3047 if (t
&& t
->to_supports_non_stop
)
3048 return (t
->to_supports_non_stop
) (t
);
3053 target_supports_non_stop (void)
3055 struct target_ops
*t
;
3057 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3058 if (t
->to_supports_non_stop
)
3059 return t
->to_supports_non_stop (t
);
3064 /* Implement the "info proc" command. */
3067 target_info_proc (char *args
, enum info_proc_what what
)
3069 struct target_ops
*t
;
3071 /* If we're already connected to something that can get us OS
3072 related data, use it. Otherwise, try using the native
3074 if (current_target
.to_stratum
>= process_stratum
)
3075 t
= current_target
.beneath
;
3077 t
= find_default_run_target (NULL
);
3079 for (; t
!= NULL
; t
= t
->beneath
)
3081 if (t
->to_info_proc
!= NULL
)
3083 t
->to_info_proc (t
, args
, what
);
3086 fprintf_unfiltered (gdb_stdlog
,
3087 "target_info_proc (\"%s\", %d)\n", args
, what
);
3097 find_default_supports_disable_randomization (struct target_ops
*self
)
3099 struct target_ops
*t
;
3101 t
= find_default_run_target (NULL
);
3102 if (t
&& t
->to_supports_disable_randomization
)
3103 return (t
->to_supports_disable_randomization
) (t
);
3108 target_supports_disable_randomization (void)
3110 struct target_ops
*t
;
3112 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3113 if (t
->to_supports_disable_randomization
)
3114 return t
->to_supports_disable_randomization (t
);
3120 target_get_osdata (const char *type
)
3122 struct target_ops
*t
;
3124 /* If we're already connected to something that can get us OS
3125 related data, use it. Otherwise, try using the native
3127 if (current_target
.to_stratum
>= process_stratum
)
3128 t
= current_target
.beneath
;
3130 t
= find_default_run_target ("get OS data");
3135 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3138 /* Determine the current address space of thread PTID. */
3140 struct address_space
*
3141 target_thread_address_space (ptid_t ptid
)
3143 struct address_space
*aspace
;
3144 struct inferior
*inf
;
3145 struct target_ops
*t
;
3147 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3149 if (t
->to_thread_address_space
!= NULL
)
3151 aspace
= t
->to_thread_address_space (t
, ptid
);
3152 gdb_assert (aspace
);
3155 fprintf_unfiltered (gdb_stdlog
,
3156 "target_thread_address_space (%s) = %d\n",
3157 target_pid_to_str (ptid
),
3158 address_space_num (aspace
));
3163 /* Fall-back to the "main" address space of the inferior. */
3164 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3166 if (inf
== NULL
|| inf
->aspace
== NULL
)
3167 internal_error (__FILE__
, __LINE__
,
3168 _("Can't determine the current "
3169 "address space of thread %s\n"),
3170 target_pid_to_str (ptid
));
3176 /* Target file operations. */
3178 static struct target_ops
*
3179 default_fileio_target (void)
3181 /* If we're already connected to something that can perform
3182 file I/O, use it. Otherwise, try using the native target. */
3183 if (current_target
.to_stratum
>= process_stratum
)
3184 return current_target
.beneath
;
3186 return find_default_run_target ("file I/O");
3189 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3190 target file descriptor, or -1 if an error occurs (and set
3193 target_fileio_open (const char *filename
, int flags
, int mode
,
3196 struct target_ops
*t
;
3198 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3200 if (t
->to_fileio_open
!= NULL
)
3202 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3205 fprintf_unfiltered (gdb_stdlog
,
3206 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3207 filename
, flags
, mode
,
3208 fd
, fd
!= -1 ? 0 : *target_errno
);
3213 *target_errno
= FILEIO_ENOSYS
;
3217 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3218 Return the number of bytes written, or -1 if an error occurs
3219 (and set *TARGET_ERRNO). */
3221 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3222 ULONGEST offset
, int *target_errno
)
3224 struct target_ops
*t
;
3226 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3228 if (t
->to_fileio_pwrite
!= NULL
)
3230 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3234 fprintf_unfiltered (gdb_stdlog
,
3235 "target_fileio_pwrite (%d,...,%d,%s) "
3237 fd
, len
, pulongest (offset
),
3238 ret
, ret
!= -1 ? 0 : *target_errno
);
3243 *target_errno
= FILEIO_ENOSYS
;
3247 /* Read up to LEN bytes FD on the target into READ_BUF.
3248 Return the number of bytes read, or -1 if an error occurs
3249 (and set *TARGET_ERRNO). */
3251 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3252 ULONGEST offset
, int *target_errno
)
3254 struct target_ops
*t
;
3256 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3258 if (t
->to_fileio_pread
!= NULL
)
3260 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3264 fprintf_unfiltered (gdb_stdlog
,
3265 "target_fileio_pread (%d,...,%d,%s) "
3267 fd
, len
, pulongest (offset
),
3268 ret
, ret
!= -1 ? 0 : *target_errno
);
3273 *target_errno
= FILEIO_ENOSYS
;
3277 /* Close FD on the target. Return 0, or -1 if an error occurs
3278 (and set *TARGET_ERRNO). */
3280 target_fileio_close (int fd
, int *target_errno
)
3282 struct target_ops
*t
;
3284 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3286 if (t
->to_fileio_close
!= NULL
)
3288 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3291 fprintf_unfiltered (gdb_stdlog
,
3292 "target_fileio_close (%d) = %d (%d)\n",
3293 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3298 *target_errno
= FILEIO_ENOSYS
;
3302 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3303 occurs (and set *TARGET_ERRNO). */
3305 target_fileio_unlink (const char *filename
, int *target_errno
)
3307 struct target_ops
*t
;
3309 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3311 if (t
->to_fileio_unlink
!= NULL
)
3313 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3316 fprintf_unfiltered (gdb_stdlog
,
3317 "target_fileio_unlink (%s) = %d (%d)\n",
3318 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3323 *target_errno
= FILEIO_ENOSYS
;
3327 /* Read value of symbolic link FILENAME on the target. Return a
3328 null-terminated string allocated via xmalloc, or NULL if an error
3329 occurs (and set *TARGET_ERRNO). */
3331 target_fileio_readlink (const char *filename
, int *target_errno
)
3333 struct target_ops
*t
;
3335 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3337 if (t
->to_fileio_readlink
!= NULL
)
3339 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3342 fprintf_unfiltered (gdb_stdlog
,
3343 "target_fileio_readlink (%s) = %s (%d)\n",
3344 filename
, ret
? ret
: "(nil)",
3345 ret
? 0 : *target_errno
);
3350 *target_errno
= FILEIO_ENOSYS
;
3355 target_fileio_close_cleanup (void *opaque
)
3357 int fd
= *(int *) opaque
;
3360 target_fileio_close (fd
, &target_errno
);
3363 /* Read target file FILENAME. Store the result in *BUF_P and
3364 return the size of the transferred data. PADDING additional bytes are
3365 available in *BUF_P. This is a helper function for
3366 target_fileio_read_alloc; see the declaration of that function for more
3370 target_fileio_read_alloc_1 (const char *filename
,
3371 gdb_byte
**buf_p
, int padding
)
3373 struct cleanup
*close_cleanup
;
3374 size_t buf_alloc
, buf_pos
;
3380 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3384 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3386 /* Start by reading up to 4K at a time. The target will throttle
3387 this number down if necessary. */
3389 buf
= xmalloc (buf_alloc
);
3393 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3394 buf_alloc
- buf_pos
- padding
, buf_pos
,
3398 /* An error occurred. */
3399 do_cleanups (close_cleanup
);
3405 /* Read all there was. */
3406 do_cleanups (close_cleanup
);
3416 /* If the buffer is filling up, expand it. */
3417 if (buf_alloc
< buf_pos
* 2)
3420 buf
= xrealloc (buf
, buf_alloc
);
3427 /* Read target file FILENAME. Store the result in *BUF_P and return
3428 the size of the transferred data. See the declaration in "target.h"
3429 function for more information about the return value. */
3432 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3434 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3437 /* Read target file FILENAME. The result is NUL-terminated and
3438 returned as a string, allocated using xmalloc. If an error occurs
3439 or the transfer is unsupported, NULL is returned. Empty objects
3440 are returned as allocated but empty strings. A warning is issued
3441 if the result contains any embedded NUL bytes. */
3444 target_fileio_read_stralloc (const char *filename
)
3448 LONGEST i
, transferred
;
3450 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3451 bufstr
= (char *) buffer
;
3453 if (transferred
< 0)
3456 if (transferred
== 0)
3457 return xstrdup ("");
3459 bufstr
[transferred
] = 0;
3461 /* Check for embedded NUL bytes; but allow trailing NULs. */
3462 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3465 warning (_("target file %s "
3466 "contained unexpected null characters"),
3476 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3477 CORE_ADDR addr
, int len
)
3479 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3483 default_watchpoint_addr_within_range (struct target_ops
*target
,
3485 CORE_ADDR start
, int length
)
3487 return addr
>= start
&& addr
< start
+ length
;
3490 static struct gdbarch
*
3491 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3493 return target_gdbarch ();
3509 * Find the next target down the stack from the specified target.
3513 find_target_beneath (struct target_ops
*t
)
3521 find_target_at (enum strata stratum
)
3523 struct target_ops
*t
;
3525 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3526 if (t
->to_stratum
== stratum
)
3533 /* The inferior process has died. Long live the inferior! */
3536 generic_mourn_inferior (void)
3540 ptid
= inferior_ptid
;
3541 inferior_ptid
= null_ptid
;
3543 /* Mark breakpoints uninserted in case something tries to delete a
3544 breakpoint while we delete the inferior's threads (which would
3545 fail, since the inferior is long gone). */
3546 mark_breakpoints_out ();
3548 if (!ptid_equal (ptid
, null_ptid
))
3550 int pid
= ptid_get_pid (ptid
);
3551 exit_inferior (pid
);
3554 /* Note this wipes step-resume breakpoints, so needs to be done
3555 after exit_inferior, which ends up referencing the step-resume
3556 breakpoints through clear_thread_inferior_resources. */
3557 breakpoint_init_inferior (inf_exited
);
3559 registers_changed ();
3561 reopen_exec_file ();
3562 reinit_frame_cache ();
3564 if (deprecated_detach_hook
)
3565 deprecated_detach_hook ();
3568 /* Convert a normal process ID to a string. Returns the string in a
3572 normal_pid_to_str (ptid_t ptid
)
3574 static char buf
[32];
3576 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3581 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3583 return normal_pid_to_str (ptid
);
3586 /* Error-catcher for target_find_memory_regions. */
3588 dummy_find_memory_regions (struct target_ops
*self
,
3589 find_memory_region_ftype ignore1
, void *ignore2
)
3591 error (_("Command not implemented for this target."));
3595 /* Error-catcher for target_make_corefile_notes. */
3597 dummy_make_corefile_notes (struct target_ops
*self
,
3598 bfd
*ignore1
, int *ignore2
)
3600 error (_("Command not implemented for this target."));
3604 /* Set up the handful of non-empty slots needed by the dummy target
3608 init_dummy_target (void)
3610 dummy_target
.to_shortname
= "None";
3611 dummy_target
.to_longname
= "None";
3612 dummy_target
.to_doc
= "";
3613 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3614 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3615 dummy_target
.to_supports_disable_randomization
3616 = find_default_supports_disable_randomization
;
3617 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3618 dummy_target
.to_stratum
= dummy_stratum
;
3619 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3620 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3621 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3622 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3623 dummy_target
.to_has_execution
3624 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3625 dummy_target
.to_magic
= OPS_MAGIC
;
3627 install_dummy_methods (&dummy_target
);
3631 debug_to_open (char *args
, int from_tty
)
3633 debug_target
.to_open (args
, from_tty
);
3635 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3639 target_close (struct target_ops
*targ
)
3641 gdb_assert (!target_is_pushed (targ
));
3643 if (targ
->to_xclose
!= NULL
)
3644 targ
->to_xclose (targ
);
3645 else if (targ
->to_close
!= NULL
)
3646 targ
->to_close (targ
);
3649 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3653 target_attach (char *args
, int from_tty
)
3655 current_target
.to_attach (¤t_target
, args
, from_tty
);
3657 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3662 target_thread_alive (ptid_t ptid
)
3664 struct target_ops
*t
;
3666 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3668 if (t
->to_thread_alive
!= NULL
)
3672 retval
= t
->to_thread_alive (t
, ptid
);
3674 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3675 ptid_get_pid (ptid
), retval
);
3685 target_find_new_threads (void)
3687 struct target_ops
*t
;
3689 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3691 if (t
->to_find_new_threads
!= NULL
)
3693 t
->to_find_new_threads (t
);
3695 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3703 target_stop (ptid_t ptid
)
3707 warning (_("May not interrupt or stop the target, ignoring attempt"));
3711 (*current_target
.to_stop
) (¤t_target
, ptid
);
3715 debug_to_post_attach (struct target_ops
*self
, int pid
)
3717 debug_target
.to_post_attach (&debug_target
, pid
);
3719 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3722 /* Concatenate ELEM to LIST, a comma separate list, and return the
3723 result. The LIST incoming argument is released. */
3726 str_comma_list_concat_elem (char *list
, const char *elem
)
3729 return xstrdup (elem
);
3731 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3734 /* Helper for target_options_to_string. If OPT is present in
3735 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3736 Returns the new resulting string. OPT is removed from
3740 do_option (int *target_options
, char *ret
,
3741 int opt
, char *opt_str
)
3743 if ((*target_options
& opt
) != 0)
3745 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3746 *target_options
&= ~opt
;
3753 target_options_to_string (int target_options
)
3757 #define DO_TARG_OPTION(OPT) \
3758 ret = do_option (&target_options, ret, OPT, #OPT)
3760 DO_TARG_OPTION (TARGET_WNOHANG
);
3762 if (target_options
!= 0)
3763 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3771 debug_print_register (const char * func
,
3772 struct regcache
*regcache
, int regno
)
3774 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3776 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3777 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3778 && gdbarch_register_name (gdbarch
, regno
) != NULL
3779 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3780 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3781 gdbarch_register_name (gdbarch
, regno
));
3783 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3784 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3786 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3787 int i
, size
= register_size (gdbarch
, regno
);
3788 gdb_byte buf
[MAX_REGISTER_SIZE
];
3790 regcache_raw_collect (regcache
, regno
, buf
);
3791 fprintf_unfiltered (gdb_stdlog
, " = ");
3792 for (i
= 0; i
< size
; i
++)
3794 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3796 if (size
<= sizeof (LONGEST
))
3798 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3800 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3801 core_addr_to_string_nz (val
), plongest (val
));
3804 fprintf_unfiltered (gdb_stdlog
, "\n");
3808 target_fetch_registers (struct regcache
*regcache
, int regno
)
3810 struct target_ops
*t
;
3812 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3814 if (t
->to_fetch_registers
!= NULL
)
3816 t
->to_fetch_registers (t
, regcache
, regno
);
3818 debug_print_register ("target_fetch_registers", regcache
, regno
);
3825 target_store_registers (struct regcache
*regcache
, int regno
)
3827 struct target_ops
*t
;
3829 if (!may_write_registers
)
3830 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3832 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3835 debug_print_register ("target_store_registers", regcache
, regno
);
3840 target_core_of_thread (ptid_t ptid
)
3842 struct target_ops
*t
;
3844 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3846 if (t
->to_core_of_thread
!= NULL
)
3848 int retval
= t
->to_core_of_thread (t
, ptid
);
3851 fprintf_unfiltered (gdb_stdlog
,
3852 "target_core_of_thread (%d) = %d\n",
3853 ptid_get_pid (ptid
), retval
);
3862 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3864 struct target_ops
*t
;
3866 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3868 if (t
->to_verify_memory
!= NULL
)
3870 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3873 fprintf_unfiltered (gdb_stdlog
,
3874 "target_verify_memory (%s, %s) = %d\n",
3875 paddress (target_gdbarch (), memaddr
),
3885 /* The documentation for this function is in its prototype declaration in
3889 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3891 struct target_ops
*t
;
3893 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3894 if (t
->to_insert_mask_watchpoint
!= NULL
)
3898 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
3901 fprintf_unfiltered (gdb_stdlog
, "\
3902 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3903 core_addr_to_string (addr
),
3904 core_addr_to_string (mask
), rw
, ret
);
3912 /* The documentation for this function is in its prototype declaration in
3916 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3918 struct target_ops
*t
;
3920 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3921 if (t
->to_remove_mask_watchpoint
!= NULL
)
3925 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
3928 fprintf_unfiltered (gdb_stdlog
, "\
3929 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3930 core_addr_to_string (addr
),
3931 core_addr_to_string (mask
), rw
, ret
);
3939 /* The documentation for this function is in its prototype declaration
3943 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
3945 struct target_ops
*t
;
3947 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3948 if (t
->to_masked_watch_num_registers
!= NULL
)
3949 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
3954 /* The documentation for this function is in its prototype declaration
3958 target_ranged_break_num_registers (void)
3960 struct target_ops
*t
;
3962 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3963 if (t
->to_ranged_break_num_registers
!= NULL
)
3964 return t
->to_ranged_break_num_registers (t
);
3971 struct btrace_target_info
*
3972 target_enable_btrace (ptid_t ptid
)
3974 struct target_ops
*t
;
3976 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3977 if (t
->to_enable_btrace
!= NULL
)
3978 return t
->to_enable_btrace (t
, ptid
);
3987 target_disable_btrace (struct btrace_target_info
*btinfo
)
3989 struct target_ops
*t
;
3991 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3992 if (t
->to_disable_btrace
!= NULL
)
3994 t
->to_disable_btrace (t
, btinfo
);
4004 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4006 struct target_ops
*t
;
4008 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4009 if (t
->to_teardown_btrace
!= NULL
)
4011 t
->to_teardown_btrace (t
, btinfo
);
4021 target_read_btrace (VEC (btrace_block_s
) **btrace
,
4022 struct btrace_target_info
*btinfo
,
4023 enum btrace_read_type type
)
4025 struct target_ops
*t
;
4027 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4028 if (t
->to_read_btrace
!= NULL
)
4029 return t
->to_read_btrace (t
, btrace
, btinfo
, type
);
4032 return BTRACE_ERR_NOT_SUPPORTED
;
4038 target_stop_recording (void)
4040 struct target_ops
*t
;
4042 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4043 if (t
->to_stop_recording
!= NULL
)
4045 t
->to_stop_recording (t
);
4049 /* This is optional. */
4055 target_info_record (void)
4057 struct target_ops
*t
;
4059 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4060 if (t
->to_info_record
!= NULL
)
4062 t
->to_info_record (t
);
4072 target_save_record (const char *filename
)
4074 struct target_ops
*t
;
4076 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4077 if (t
->to_save_record
!= NULL
)
4079 t
->to_save_record (t
, filename
);
4089 target_supports_delete_record (void)
4091 struct target_ops
*t
;
4093 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4094 if (t
->to_delete_record
!= NULL
)
4103 target_delete_record (void)
4105 struct target_ops
*t
;
4107 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4108 if (t
->to_delete_record
!= NULL
)
4110 t
->to_delete_record (t
);
4120 target_record_is_replaying (void)
4122 struct target_ops
*t
;
4124 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4125 if (t
->to_record_is_replaying
!= NULL
)
4126 return t
->to_record_is_replaying (t
);
4134 target_goto_record_begin (void)
4136 struct target_ops
*t
;
4138 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4139 if (t
->to_goto_record_begin
!= NULL
)
4141 t
->to_goto_record_begin (t
);
4151 target_goto_record_end (void)
4153 struct target_ops
*t
;
4155 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4156 if (t
->to_goto_record_end
!= NULL
)
4158 t
->to_goto_record_end (t
);
4168 target_goto_record (ULONGEST insn
)
4170 struct target_ops
*t
;
4172 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4173 if (t
->to_goto_record
!= NULL
)
4175 t
->to_goto_record (t
, insn
);
4185 target_insn_history (int size
, int flags
)
4187 struct target_ops
*t
;
4189 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4190 if (t
->to_insn_history
!= NULL
)
4192 t
->to_insn_history (t
, size
, flags
);
4202 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4204 struct target_ops
*t
;
4206 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4207 if (t
->to_insn_history_from
!= NULL
)
4209 t
->to_insn_history_from (t
, from
, size
, flags
);
4219 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4221 struct target_ops
*t
;
4223 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4224 if (t
->to_insn_history_range
!= NULL
)
4226 t
->to_insn_history_range (t
, begin
, end
, flags
);
4236 target_call_history (int size
, int flags
)
4238 struct target_ops
*t
;
4240 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4241 if (t
->to_call_history
!= NULL
)
4243 t
->to_call_history (t
, size
, flags
);
4253 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4255 struct target_ops
*t
;
4257 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4258 if (t
->to_call_history_from
!= NULL
)
4260 t
->to_call_history_from (t
, begin
, size
, flags
);
4270 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4272 struct target_ops
*t
;
4274 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4275 if (t
->to_call_history_range
!= NULL
)
4277 t
->to_call_history_range (t
, begin
, end
, flags
);
4285 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
4287 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
4289 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4294 const struct frame_unwind
*
4295 target_get_unwinder (void)
4297 struct target_ops
*t
;
4299 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4300 if (t
->to_get_unwinder
!= NULL
)
4301 return t
->to_get_unwinder
;
4308 const struct frame_unwind
*
4309 target_get_tailcall_unwinder (void)
4311 struct target_ops
*t
;
4313 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4314 if (t
->to_get_tailcall_unwinder
!= NULL
)
4315 return t
->to_get_tailcall_unwinder
;
4323 forward_target_decr_pc_after_break (struct target_ops
*ops
,
4324 struct gdbarch
*gdbarch
)
4326 for (; ops
!= NULL
; ops
= ops
->beneath
)
4327 if (ops
->to_decr_pc_after_break
!= NULL
)
4328 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
4330 return gdbarch_decr_pc_after_break (gdbarch
);
4336 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
4338 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
4342 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4343 int write
, struct mem_attrib
*attrib
,
4344 struct target_ops
*target
)
4348 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4351 fprintf_unfiltered (gdb_stdlog
,
4352 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4353 paddress (target_gdbarch (), memaddr
), len
,
4354 write
? "write" : "read", retval
);
4360 fputs_unfiltered (", bytes =", gdb_stdlog
);
4361 for (i
= 0; i
< retval
; i
++)
4363 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4365 if (targetdebug
< 2 && i
> 0)
4367 fprintf_unfiltered (gdb_stdlog
, " ...");
4370 fprintf_unfiltered (gdb_stdlog
, "\n");
4373 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4377 fputc_unfiltered ('\n', gdb_stdlog
);
4383 debug_to_files_info (struct target_ops
*target
)
4385 debug_target
.to_files_info (target
);
4387 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4391 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4392 struct bp_target_info
*bp_tgt
)
4396 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4398 fprintf_unfiltered (gdb_stdlog
,
4399 "target_insert_breakpoint (%s, xxx) = %ld\n",
4400 core_addr_to_string (bp_tgt
->placed_address
),
4401 (unsigned long) retval
);
4406 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4407 struct bp_target_info
*bp_tgt
)
4411 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4413 fprintf_unfiltered (gdb_stdlog
,
4414 "target_remove_breakpoint (%s, xxx) = %ld\n",
4415 core_addr_to_string (bp_tgt
->placed_address
),
4416 (unsigned long) retval
);
4421 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4422 int type
, int cnt
, int from_tty
)
4426 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4427 type
, cnt
, from_tty
);
4429 fprintf_unfiltered (gdb_stdlog
,
4430 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4431 (unsigned long) type
,
4432 (unsigned long) cnt
,
4433 (unsigned long) from_tty
,
4434 (unsigned long) retval
);
4439 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4440 CORE_ADDR addr
, int len
)
4444 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4447 fprintf_unfiltered (gdb_stdlog
,
4448 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4449 core_addr_to_string (addr
), (unsigned long) len
,
4450 core_addr_to_string (retval
));
4455 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4456 CORE_ADDR addr
, int len
, int rw
,
4457 struct expression
*cond
)
4461 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4465 fprintf_unfiltered (gdb_stdlog
,
4466 "target_can_accel_watchpoint_condition "
4467 "(%s, %d, %d, %s) = %ld\n",
4468 core_addr_to_string (addr
), len
, rw
,
4469 host_address_to_string (cond
), (unsigned long) retval
);
4474 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4478 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4480 fprintf_unfiltered (gdb_stdlog
,
4481 "target_stopped_by_watchpoint () = %ld\n",
4482 (unsigned long) retval
);
4487 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4491 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4493 fprintf_unfiltered (gdb_stdlog
,
4494 "target_stopped_data_address ([%s]) = %ld\n",
4495 core_addr_to_string (*addr
),
4496 (unsigned long)retval
);
4501 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4503 CORE_ADDR start
, int length
)
4507 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4510 fprintf_filtered (gdb_stdlog
,
4511 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4512 core_addr_to_string (addr
), core_addr_to_string (start
),
4518 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4519 struct gdbarch
*gdbarch
,
4520 struct bp_target_info
*bp_tgt
)
4524 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4527 fprintf_unfiltered (gdb_stdlog
,
4528 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4529 core_addr_to_string (bp_tgt
->placed_address
),
4530 (unsigned long) retval
);
4535 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4536 struct gdbarch
*gdbarch
,
4537 struct bp_target_info
*bp_tgt
)
4541 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4544 fprintf_unfiltered (gdb_stdlog
,
4545 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4546 core_addr_to_string (bp_tgt
->placed_address
),
4547 (unsigned long) retval
);
4552 debug_to_insert_watchpoint (struct target_ops
*self
,
4553 CORE_ADDR addr
, int len
, int type
,
4554 struct expression
*cond
)
4558 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4559 addr
, len
, type
, cond
);
4561 fprintf_unfiltered (gdb_stdlog
,
4562 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4563 core_addr_to_string (addr
), len
, type
,
4564 host_address_to_string (cond
), (unsigned long) retval
);
4569 debug_to_remove_watchpoint (struct target_ops
*self
,
4570 CORE_ADDR addr
, int len
, int type
,
4571 struct expression
*cond
)
4575 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4576 addr
, len
, type
, cond
);
4578 fprintf_unfiltered (gdb_stdlog
,
4579 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4580 core_addr_to_string (addr
), len
, type
,
4581 host_address_to_string (cond
), (unsigned long) retval
);
4586 debug_to_terminal_init (struct target_ops
*self
)
4588 debug_target
.to_terminal_init (&debug_target
);
4590 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4594 debug_to_terminal_inferior (struct target_ops
*self
)
4596 debug_target
.to_terminal_inferior (&debug_target
);
4598 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4602 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4604 debug_target
.to_terminal_ours_for_output (&debug_target
);
4606 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4610 debug_to_terminal_ours (struct target_ops
*self
)
4612 debug_target
.to_terminal_ours (&debug_target
);
4614 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4618 debug_to_terminal_save_ours (struct target_ops
*self
)
4620 debug_target
.to_terminal_save_ours (&debug_target
);
4622 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4626 debug_to_terminal_info (struct target_ops
*self
,
4627 const char *arg
, int from_tty
)
4629 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4631 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4636 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4638 debug_target
.to_load (&debug_target
, args
, from_tty
);
4640 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4644 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4646 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4648 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4649 ptid_get_pid (ptid
));
4653 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4657 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4659 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4666 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4670 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4672 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4679 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4683 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4685 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4692 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4696 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4698 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4705 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4709 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4711 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4718 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4722 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4724 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4731 debug_to_has_exited (struct target_ops
*self
,
4732 int pid
, int wait_status
, int *exit_status
)
4736 has_exited
= debug_target
.to_has_exited (&debug_target
,
4737 pid
, wait_status
, exit_status
);
4739 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4740 pid
, wait_status
, *exit_status
, has_exited
);
4746 debug_to_can_run (struct target_ops
*self
)
4750 retval
= debug_target
.to_can_run (&debug_target
);
4752 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4757 static struct gdbarch
*
4758 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4760 struct gdbarch
*retval
;
4762 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4764 fprintf_unfiltered (gdb_stdlog
,
4765 "target_thread_architecture (%s) = %s [%s]\n",
4766 target_pid_to_str (ptid
),
4767 host_address_to_string (retval
),
4768 gdbarch_bfd_arch_info (retval
)->printable_name
);
4773 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4775 debug_target
.to_stop (&debug_target
, ptid
);
4777 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4778 target_pid_to_str (ptid
));
4782 debug_to_rcmd (struct target_ops
*self
, char *command
,
4783 struct ui_file
*outbuf
)
4785 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4786 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4790 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4794 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4796 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4803 setup_target_debug (void)
4805 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4807 current_target
.to_open
= debug_to_open
;
4808 current_target
.to_post_attach
= debug_to_post_attach
;
4809 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4810 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4811 current_target
.to_files_info
= debug_to_files_info
;
4812 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4813 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4814 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4815 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4816 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4817 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4818 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4819 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4820 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4821 current_target
.to_watchpoint_addr_within_range
4822 = debug_to_watchpoint_addr_within_range
;
4823 current_target
.to_region_ok_for_hw_watchpoint
4824 = debug_to_region_ok_for_hw_watchpoint
;
4825 current_target
.to_can_accel_watchpoint_condition
4826 = debug_to_can_accel_watchpoint_condition
;
4827 current_target
.to_terminal_init
= debug_to_terminal_init
;
4828 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4829 current_target
.to_terminal_ours_for_output
4830 = debug_to_terminal_ours_for_output
;
4831 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4832 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4833 current_target
.to_terminal_info
= debug_to_terminal_info
;
4834 current_target
.to_load
= debug_to_load
;
4835 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4836 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4837 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4838 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4839 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4840 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4841 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4842 current_target
.to_has_exited
= debug_to_has_exited
;
4843 current_target
.to_can_run
= debug_to_can_run
;
4844 current_target
.to_stop
= debug_to_stop
;
4845 current_target
.to_rcmd
= debug_to_rcmd
;
4846 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4847 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4851 static char targ_desc
[] =
4852 "Names of targets and files being debugged.\nShows the entire \
4853 stack of targets currently in use (including the exec-file,\n\
4854 core-file, and process, if any), as well as the symbol file name.";
4857 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4859 error (_("\"monitor\" command not supported by this target."));
4863 do_monitor_command (char *cmd
,
4866 target_rcmd (cmd
, gdb_stdtarg
);
4869 /* Print the name of each layers of our target stack. */
4872 maintenance_print_target_stack (char *cmd
, int from_tty
)
4874 struct target_ops
*t
;
4876 printf_filtered (_("The current target stack is:\n"));
4878 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4880 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4884 /* Controls if async mode is permitted. */
4885 int target_async_permitted
= 0;
4887 /* The set command writes to this variable. If the inferior is
4888 executing, target_async_permitted is *not* updated. */
4889 static int target_async_permitted_1
= 0;
4892 set_target_async_command (char *args
, int from_tty
,
4893 struct cmd_list_element
*c
)
4895 if (have_live_inferiors ())
4897 target_async_permitted_1
= target_async_permitted
;
4898 error (_("Cannot change this setting while the inferior is running."));
4901 target_async_permitted
= target_async_permitted_1
;
4905 show_target_async_command (struct ui_file
*file
, int from_tty
,
4906 struct cmd_list_element
*c
,
4909 fprintf_filtered (file
,
4910 _("Controlling the inferior in "
4911 "asynchronous mode is %s.\n"), value
);
4914 /* Temporary copies of permission settings. */
4916 static int may_write_registers_1
= 1;
4917 static int may_write_memory_1
= 1;
4918 static int may_insert_breakpoints_1
= 1;
4919 static int may_insert_tracepoints_1
= 1;
4920 static int may_insert_fast_tracepoints_1
= 1;
4921 static int may_stop_1
= 1;
4923 /* Make the user-set values match the real values again. */
4926 update_target_permissions (void)
4928 may_write_registers_1
= may_write_registers
;
4929 may_write_memory_1
= may_write_memory
;
4930 may_insert_breakpoints_1
= may_insert_breakpoints
;
4931 may_insert_tracepoints_1
= may_insert_tracepoints
;
4932 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4933 may_stop_1
= may_stop
;
4936 /* The one function handles (most of) the permission flags in the same
4940 set_target_permissions (char *args
, int from_tty
,
4941 struct cmd_list_element
*c
)
4943 if (target_has_execution
)
4945 update_target_permissions ();
4946 error (_("Cannot change this setting while the inferior is running."));
4949 /* Make the real values match the user-changed values. */
4950 may_write_registers
= may_write_registers_1
;
4951 may_insert_breakpoints
= may_insert_breakpoints_1
;
4952 may_insert_tracepoints
= may_insert_tracepoints_1
;
4953 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4954 may_stop
= may_stop_1
;
4955 update_observer_mode ();
4958 /* Set memory write permission independently of observer mode. */
4961 set_write_memory_permission (char *args
, int from_tty
,
4962 struct cmd_list_element
*c
)
4964 /* Make the real values match the user-changed values. */
4965 may_write_memory
= may_write_memory_1
;
4966 update_observer_mode ();
4971 initialize_targets (void)
4973 init_dummy_target ();
4974 push_target (&dummy_target
);
4976 add_info ("target", target_info
, targ_desc
);
4977 add_info ("files", target_info
, targ_desc
);
4979 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
4980 Set target debugging."), _("\
4981 Show target debugging."), _("\
4982 When non-zero, target debugging is enabled. Higher numbers are more\n\
4983 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4987 &setdebuglist
, &showdebuglist
);
4989 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
4990 &trust_readonly
, _("\
4991 Set mode for reading from readonly sections."), _("\
4992 Show mode for reading from readonly sections."), _("\
4993 When this mode is on, memory reads from readonly sections (such as .text)\n\
4994 will be read from the object file instead of from the target. This will\n\
4995 result in significant performance improvement for remote targets."),
4997 show_trust_readonly
,
4998 &setlist
, &showlist
);
5000 add_com ("monitor", class_obscure
, do_monitor_command
,
5001 _("Send a command to the remote monitor (remote targets only)."));
5003 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5004 _("Print the name of each layer of the internal target stack."),
5005 &maintenanceprintlist
);
5007 add_setshow_boolean_cmd ("target-async", no_class
,
5008 &target_async_permitted_1
, _("\
5009 Set whether gdb controls the inferior in asynchronous mode."), _("\
5010 Show whether gdb controls the inferior in asynchronous mode."), _("\
5011 Tells gdb whether to control the inferior in asynchronous mode."),
5012 set_target_async_command
,
5013 show_target_async_command
,
5017 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5018 &may_write_registers_1
, _("\
5019 Set permission to write into registers."), _("\
5020 Show permission to write into registers."), _("\
5021 When this permission is on, GDB may write into the target's registers.\n\
5022 Otherwise, any sort of write attempt will result in an error."),
5023 set_target_permissions
, NULL
,
5024 &setlist
, &showlist
);
5026 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5027 &may_write_memory_1
, _("\
5028 Set permission to write into target memory."), _("\
5029 Show permission to write into target memory."), _("\
5030 When this permission is on, GDB may write into the target's memory.\n\
5031 Otherwise, any sort of write attempt will result in an error."),
5032 set_write_memory_permission
, NULL
,
5033 &setlist
, &showlist
);
5035 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5036 &may_insert_breakpoints_1
, _("\
5037 Set permission to insert breakpoints in the target."), _("\
5038 Show permission to insert breakpoints in the target."), _("\
5039 When this permission is on, GDB may insert breakpoints in the program.\n\
5040 Otherwise, any sort of insertion attempt will result in an error."),
5041 set_target_permissions
, NULL
,
5042 &setlist
, &showlist
);
5044 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5045 &may_insert_tracepoints_1
, _("\
5046 Set permission to insert tracepoints in the target."), _("\
5047 Show permission to insert tracepoints in the target."), _("\
5048 When this permission is on, GDB may insert tracepoints in the program.\n\
5049 Otherwise, any sort of insertion attempt will result in an error."),
5050 set_target_permissions
, NULL
,
5051 &setlist
, &showlist
);
5053 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5054 &may_insert_fast_tracepoints_1
, _("\
5055 Set permission to insert fast tracepoints in the target."), _("\
5056 Show permission to insert fast tracepoints in the target."), _("\
5057 When this permission is on, GDB may insert fast tracepoints.\n\
5058 Otherwise, any sort of insertion attempt will result in an error."),
5059 set_target_permissions
, NULL
,
5060 &setlist
, &showlist
);
5062 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5064 Set permission to interrupt or signal the target."), _("\
5065 Show permission to interrupt or signal the target."), _("\
5066 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5067 Otherwise, any attempt to interrupt or stop will be ignored."),
5068 set_target_permissions
, NULL
,
5069 &setlist
, &showlist
);