1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2013 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/>. */
24 #include "gdb_string.h"
35 #include "gdb_assert.h"
37 #include "exceptions.h"
38 #include "target-descriptions.h"
39 #include "gdbthread.h"
42 #include "inline-frame.h"
43 #include "tracepoint.h"
44 #include "gdb/fileio.h"
47 static void target_info (char *, int);
49 static void default_terminal_info (const char *, int);
51 static int default_watchpoint_addr_within_range (struct target_ops
*,
52 CORE_ADDR
, CORE_ADDR
, int);
54 static int default_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
56 static void tcomplain (void) ATTRIBUTE_NORETURN
;
58 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
60 static int return_zero (void);
62 static int return_one (void);
64 static int return_minus_one (void);
66 void target_ignore (void);
68 static void target_command (char *, int);
70 static struct target_ops
*find_default_run_target (char *);
72 static LONGEST
default_xfer_partial (struct target_ops
*ops
,
73 enum target_object object
,
74 const char *annex
, gdb_byte
*readbuf
,
75 const gdb_byte
*writebuf
,
76 ULONGEST offset
, LONGEST len
);
78 static LONGEST
current_xfer_partial (struct target_ops
*ops
,
79 enum target_object object
,
80 const char *annex
, gdb_byte
*readbuf
,
81 const gdb_byte
*writebuf
,
82 ULONGEST offset
, LONGEST len
);
84 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
87 static void init_dummy_target (void);
89 static struct target_ops debug_target
;
91 static void debug_to_open (char *, int);
93 static void debug_to_prepare_to_store (struct regcache
*);
95 static void debug_to_files_info (struct target_ops
*);
97 static int debug_to_insert_breakpoint (struct gdbarch
*,
98 struct bp_target_info
*);
100 static int debug_to_remove_breakpoint (struct gdbarch
*,
101 struct bp_target_info
*);
103 static int debug_to_can_use_hw_breakpoint (int, int, int);
105 static int debug_to_insert_hw_breakpoint (struct gdbarch
*,
106 struct bp_target_info
*);
108 static int debug_to_remove_hw_breakpoint (struct gdbarch
*,
109 struct bp_target_info
*);
111 static int debug_to_insert_watchpoint (CORE_ADDR
, int, int,
112 struct expression
*);
114 static int debug_to_remove_watchpoint (CORE_ADDR
, int, int,
115 struct expression
*);
117 static int debug_to_stopped_by_watchpoint (void);
119 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
121 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
122 CORE_ADDR
, CORE_ADDR
, int);
124 static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
126 static int debug_to_can_accel_watchpoint_condition (CORE_ADDR
, int, int,
127 struct expression
*);
129 static void debug_to_terminal_init (void);
131 static void debug_to_terminal_inferior (void);
133 static void debug_to_terminal_ours_for_output (void);
135 static void debug_to_terminal_save_ours (void);
137 static void debug_to_terminal_ours (void);
139 static void debug_to_load (char *, int);
141 static int debug_to_can_run (void);
143 static void debug_to_stop (ptid_t
);
145 /* Pointer to array of target architecture structures; the size of the
146 array; the current index into the array; the allocated size of the
148 struct target_ops
**target_structs
;
149 unsigned target_struct_size
;
150 unsigned target_struct_allocsize
;
151 #define DEFAULT_ALLOCSIZE 10
153 /* The initial current target, so that there is always a semi-valid
156 static struct target_ops dummy_target
;
158 /* Top of target stack. */
160 static struct target_ops
*target_stack
;
162 /* The target structure we are currently using to talk to a process
163 or file or whatever "inferior" we have. */
165 struct target_ops current_target
;
167 /* Command list for target. */
169 static struct cmd_list_element
*targetlist
= NULL
;
171 /* Nonzero if we should trust readonly sections from the
172 executable when reading memory. */
174 static int trust_readonly
= 0;
176 /* Nonzero if we should show true memory content including
177 memory breakpoint inserted by gdb. */
179 static int show_memory_breakpoints
= 0;
181 /* These globals control whether GDB attempts to perform these
182 operations; they are useful for targets that need to prevent
183 inadvertant disruption, such as in non-stop mode. */
185 int may_write_registers
= 1;
187 int may_write_memory
= 1;
189 int may_insert_breakpoints
= 1;
191 int may_insert_tracepoints
= 1;
193 int may_insert_fast_tracepoints
= 1;
197 /* Non-zero if we want to see trace of target level stuff. */
199 static unsigned int targetdebug
= 0;
201 show_targetdebug (struct ui_file
*file
, int from_tty
,
202 struct cmd_list_element
*c
, const char *value
)
204 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
207 static void setup_target_debug (void);
209 /* The option sets this. */
210 static int stack_cache_enabled_p_1
= 1;
211 /* And set_stack_cache_enabled_p updates this.
212 The reason for the separation is so that we don't flush the cache for
213 on->on transitions. */
214 static int stack_cache_enabled_p
= 1;
216 /* This is called *after* the stack-cache has been set.
217 Flush the cache for off->on and on->off transitions.
218 There's no real need to flush the cache for on->off transitions,
219 except cleanliness. */
222 set_stack_cache_enabled_p (char *args
, int from_tty
,
223 struct cmd_list_element
*c
)
225 if (stack_cache_enabled_p
!= stack_cache_enabled_p_1
)
226 target_dcache_invalidate ();
228 stack_cache_enabled_p
= stack_cache_enabled_p_1
;
232 show_stack_cache_enabled_p (struct ui_file
*file
, int from_tty
,
233 struct cmd_list_element
*c
, const char *value
)
235 fprintf_filtered (file
, _("Cache use for stack accesses is %s.\n"), value
);
238 /* Cache of memory operations, to speed up remote access. */
239 static DCACHE
*target_dcache
;
241 /* Invalidate the target dcache. */
244 target_dcache_invalidate (void)
246 dcache_invalidate (target_dcache
);
249 /* The user just typed 'target' without the name of a target. */
252 target_command (char *arg
, int from_tty
)
254 fputs_filtered ("Argument required (target name). Try `help target'\n",
258 /* Default target_has_* methods for process_stratum targets. */
261 default_child_has_all_memory (struct target_ops
*ops
)
263 /* If no inferior selected, then we can't read memory here. */
264 if (ptid_equal (inferior_ptid
, null_ptid
))
271 default_child_has_memory (struct target_ops
*ops
)
273 /* If no inferior selected, then we can't read memory here. */
274 if (ptid_equal (inferior_ptid
, null_ptid
))
281 default_child_has_stack (struct target_ops
*ops
)
283 /* If no inferior selected, there's no stack. */
284 if (ptid_equal (inferior_ptid
, null_ptid
))
291 default_child_has_registers (struct target_ops
*ops
)
293 /* Can't read registers from no inferior. */
294 if (ptid_equal (inferior_ptid
, null_ptid
))
301 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
303 /* If there's no thread selected, then we can't make it run through
305 if (ptid_equal (the_ptid
, null_ptid
))
313 target_has_all_memory_1 (void)
315 struct target_ops
*t
;
317 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
318 if (t
->to_has_all_memory (t
))
325 target_has_memory_1 (void)
327 struct target_ops
*t
;
329 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
330 if (t
->to_has_memory (t
))
337 target_has_stack_1 (void)
339 struct target_ops
*t
;
341 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
342 if (t
->to_has_stack (t
))
349 target_has_registers_1 (void)
351 struct target_ops
*t
;
353 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
354 if (t
->to_has_registers (t
))
361 target_has_execution_1 (ptid_t the_ptid
)
363 struct target_ops
*t
;
365 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
366 if (t
->to_has_execution (t
, the_ptid
))
373 target_has_execution_current (void)
375 return target_has_execution_1 (inferior_ptid
);
378 /* Complete initialization of T. This ensures that various fields in
379 T are set, if needed by the target implementation. */
382 complete_target_initialization (struct target_ops
*t
)
384 /* Provide default values for all "must have" methods. */
385 if (t
->to_xfer_partial
== NULL
)
386 t
->to_xfer_partial
= default_xfer_partial
;
388 if (t
->to_has_all_memory
== NULL
)
389 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
391 if (t
->to_has_memory
== NULL
)
392 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
394 if (t
->to_has_stack
== NULL
)
395 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
397 if (t
->to_has_registers
== NULL
)
398 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
400 if (t
->to_has_execution
== NULL
)
401 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
404 /* Add possible target architecture T to the list and add a new
405 command 'target T->to_shortname'. Set COMPLETER as the command's
406 completer if not NULL. */
409 add_target_with_completer (struct target_ops
*t
,
410 completer_ftype
*completer
)
412 struct cmd_list_element
*c
;
414 complete_target_initialization (t
);
418 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
419 target_structs
= (struct target_ops
**) xmalloc
420 (target_struct_allocsize
* sizeof (*target_structs
));
422 if (target_struct_size
>= target_struct_allocsize
)
424 target_struct_allocsize
*= 2;
425 target_structs
= (struct target_ops
**)
426 xrealloc ((char *) target_structs
,
427 target_struct_allocsize
* sizeof (*target_structs
));
429 target_structs
[target_struct_size
++] = t
;
431 if (targetlist
== NULL
)
432 add_prefix_cmd ("target", class_run
, target_command
, _("\
433 Connect to a target machine or process.\n\
434 The first argument is the type or protocol of the target machine.\n\
435 Remaining arguments are interpreted by the target protocol. For more\n\
436 information on the arguments for a particular protocol, type\n\
437 `help target ' followed by the protocol name."),
438 &targetlist
, "target ", 0, &cmdlist
);
439 c
= add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
,
441 if (completer
!= NULL
)
442 set_cmd_completer (c
, completer
);
445 /* Add a possible target architecture to the list. */
448 add_target (struct target_ops
*t
)
450 add_target_with_completer (t
, NULL
);
456 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
458 struct cmd_list_element
*c
;
461 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
463 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
464 alt
= xstrprintf ("target %s", t
->to_shortname
);
465 deprecate_cmd (c
, alt
);
478 struct target_ops
*t
;
480 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
481 if (t
->to_kill
!= NULL
)
484 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
494 target_load (char *arg
, int from_tty
)
496 target_dcache_invalidate ();
497 (*current_target
.to_load
) (arg
, from_tty
);
501 target_create_inferior (char *exec_file
, char *args
,
502 char **env
, int from_tty
)
504 struct target_ops
*t
;
506 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
508 if (t
->to_create_inferior
!= NULL
)
510 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
512 fprintf_unfiltered (gdb_stdlog
,
513 "target_create_inferior (%s, %s, xxx, %d)\n",
514 exec_file
, args
, from_tty
);
519 internal_error (__FILE__
, __LINE__
,
520 _("could not find a target to create inferior"));
524 target_terminal_inferior (void)
526 /* A background resume (``run&'') should leave GDB in control of the
527 terminal. Use target_can_async_p, not target_is_async_p, since at
528 this point the target is not async yet. However, if sync_execution
529 is not set, we know it will become async prior to resume. */
530 if (target_can_async_p () && !sync_execution
)
533 /* If GDB is resuming the inferior in the foreground, install
534 inferior's terminal modes. */
535 (*current_target
.to_terminal_inferior
) ();
539 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
540 struct target_ops
*t
)
542 errno
= EIO
; /* Can't read/write this location. */
543 return 0; /* No bytes handled. */
549 error (_("You can't do that when your target is `%s'"),
550 current_target
.to_shortname
);
556 error (_("You can't do that without a process to debug."));
560 default_terminal_info (const char *args
, int from_tty
)
562 printf_unfiltered (_("No saved terminal information.\n"));
565 /* A default implementation for the to_get_ada_task_ptid target method.
567 This function builds the PTID by using both LWP and TID as part of
568 the PTID lwp and tid elements. The pid used is the pid of the
572 default_get_ada_task_ptid (long lwp
, long tid
)
574 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
577 static enum exec_direction_kind
578 default_execution_direction (void)
580 if (!target_can_execute_reverse
)
582 else if (!target_can_async_p ())
585 gdb_assert_not_reached ("\
586 to_execution_direction must be implemented for reverse async");
589 /* Go through the target stack from top to bottom, copying over zero
590 entries in current_target, then filling in still empty entries. In
591 effect, we are doing class inheritance through the pushed target
594 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
595 is currently implemented, is that it discards any knowledge of
596 which target an inherited method originally belonged to.
597 Consequently, new new target methods should instead explicitly and
598 locally search the target stack for the target that can handle the
602 update_current_target (void)
604 struct target_ops
*t
;
606 /* First, reset current's contents. */
607 memset (¤t_target
, 0, sizeof (current_target
));
609 #define INHERIT(FIELD, TARGET) \
610 if (!current_target.FIELD) \
611 current_target.FIELD = (TARGET)->FIELD
613 for (t
= target_stack
; t
; t
= t
->beneath
)
615 INHERIT (to_shortname
, t
);
616 INHERIT (to_longname
, t
);
618 /* Do not inherit to_open. */
619 /* Do not inherit to_close. */
620 /* Do not inherit to_attach. */
621 INHERIT (to_post_attach
, t
);
622 INHERIT (to_attach_no_wait
, t
);
623 /* Do not inherit to_detach. */
624 /* Do not inherit to_disconnect. */
625 /* Do not inherit to_resume. */
626 /* Do not inherit to_wait. */
627 /* Do not inherit to_fetch_registers. */
628 /* Do not inherit to_store_registers. */
629 INHERIT (to_prepare_to_store
, t
);
630 INHERIT (deprecated_xfer_memory
, t
);
631 INHERIT (to_files_info
, t
);
632 INHERIT (to_insert_breakpoint
, t
);
633 INHERIT (to_remove_breakpoint
, t
);
634 INHERIT (to_can_use_hw_breakpoint
, t
);
635 INHERIT (to_insert_hw_breakpoint
, t
);
636 INHERIT (to_remove_hw_breakpoint
, t
);
637 /* Do not inherit to_ranged_break_num_registers. */
638 INHERIT (to_insert_watchpoint
, t
);
639 INHERIT (to_remove_watchpoint
, t
);
640 /* Do not inherit to_insert_mask_watchpoint. */
641 /* Do not inherit to_remove_mask_watchpoint. */
642 INHERIT (to_stopped_data_address
, t
);
643 INHERIT (to_have_steppable_watchpoint
, t
);
644 INHERIT (to_have_continuable_watchpoint
, t
);
645 INHERIT (to_stopped_by_watchpoint
, t
);
646 INHERIT (to_watchpoint_addr_within_range
, t
);
647 INHERIT (to_region_ok_for_hw_watchpoint
, t
);
648 INHERIT (to_can_accel_watchpoint_condition
, t
);
649 /* Do not inherit to_masked_watch_num_registers. */
650 INHERIT (to_terminal_init
, t
);
651 INHERIT (to_terminal_inferior
, t
);
652 INHERIT (to_terminal_ours_for_output
, t
);
653 INHERIT (to_terminal_ours
, t
);
654 INHERIT (to_terminal_save_ours
, t
);
655 INHERIT (to_terminal_info
, t
);
656 /* Do not inherit to_kill. */
657 INHERIT (to_load
, t
);
658 /* Do no inherit to_create_inferior. */
659 INHERIT (to_post_startup_inferior
, t
);
660 INHERIT (to_insert_fork_catchpoint
, t
);
661 INHERIT (to_remove_fork_catchpoint
, t
);
662 INHERIT (to_insert_vfork_catchpoint
, t
);
663 INHERIT (to_remove_vfork_catchpoint
, t
);
664 /* Do not inherit to_follow_fork. */
665 INHERIT (to_insert_exec_catchpoint
, t
);
666 INHERIT (to_remove_exec_catchpoint
, t
);
667 INHERIT (to_set_syscall_catchpoint
, t
);
668 INHERIT (to_has_exited
, t
);
669 /* Do not inherit to_mourn_inferior. */
670 INHERIT (to_can_run
, t
);
671 /* Do not inherit to_pass_signals. */
672 /* Do not inherit to_program_signals. */
673 /* Do not inherit to_thread_alive. */
674 /* Do not inherit to_find_new_threads. */
675 /* Do not inherit to_pid_to_str. */
676 INHERIT (to_extra_thread_info
, t
);
677 INHERIT (to_thread_name
, t
);
678 INHERIT (to_stop
, t
);
679 /* Do not inherit to_xfer_partial. */
680 INHERIT (to_rcmd
, t
);
681 INHERIT (to_pid_to_exec_file
, t
);
682 INHERIT (to_log_command
, t
);
683 INHERIT (to_stratum
, t
);
684 /* Do not inherit to_has_all_memory. */
685 /* Do not inherit to_has_memory. */
686 /* Do not inherit to_has_stack. */
687 /* Do not inherit to_has_registers. */
688 /* Do not inherit to_has_execution. */
689 INHERIT (to_has_thread_control
, t
);
690 INHERIT (to_can_async_p
, t
);
691 INHERIT (to_is_async_p
, t
);
692 INHERIT (to_async
, t
);
693 INHERIT (to_find_memory_regions
, t
);
694 INHERIT (to_make_corefile_notes
, t
);
695 INHERIT (to_get_bookmark
, t
);
696 INHERIT (to_goto_bookmark
, t
);
697 /* Do not inherit to_get_thread_local_address. */
698 INHERIT (to_can_execute_reverse
, t
);
699 INHERIT (to_execution_direction
, t
);
700 INHERIT (to_thread_architecture
, t
);
701 /* Do not inherit to_read_description. */
702 INHERIT (to_get_ada_task_ptid
, t
);
703 /* Do not inherit to_search_memory. */
704 INHERIT (to_supports_multi_process
, t
);
705 INHERIT (to_supports_enable_disable_tracepoint
, t
);
706 INHERIT (to_supports_string_tracing
, t
);
707 INHERIT (to_trace_init
, t
);
708 INHERIT (to_download_tracepoint
, t
);
709 INHERIT (to_can_download_tracepoint
, t
);
710 INHERIT (to_download_trace_state_variable
, t
);
711 INHERIT (to_enable_tracepoint
, t
);
712 INHERIT (to_disable_tracepoint
, t
);
713 INHERIT (to_trace_set_readonly_regions
, t
);
714 INHERIT (to_trace_start
, t
);
715 INHERIT (to_get_trace_status
, t
);
716 INHERIT (to_get_tracepoint_status
, t
);
717 INHERIT (to_trace_stop
, t
);
718 INHERIT (to_trace_find
, t
);
719 INHERIT (to_get_trace_state_variable_value
, t
);
720 INHERIT (to_save_trace_data
, t
);
721 INHERIT (to_upload_tracepoints
, t
);
722 INHERIT (to_upload_trace_state_variables
, t
);
723 INHERIT (to_get_raw_trace_data
, t
);
724 INHERIT (to_get_min_fast_tracepoint_insn_len
, t
);
725 INHERIT (to_set_disconnected_tracing
, t
);
726 INHERIT (to_set_circular_trace_buffer
, t
);
727 INHERIT (to_set_trace_buffer_size
, t
);
728 INHERIT (to_set_trace_notes
, t
);
729 INHERIT (to_get_tib_address
, t
);
730 INHERIT (to_set_permissions
, t
);
731 INHERIT (to_static_tracepoint_marker_at
, t
);
732 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
733 INHERIT (to_traceframe_info
, t
);
734 INHERIT (to_use_agent
, t
);
735 INHERIT (to_can_use_agent
, t
);
736 INHERIT (to_augmented_libraries_svr4_read
, t
);
737 INHERIT (to_magic
, t
);
738 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
739 INHERIT (to_can_run_breakpoint_commands
, t
);
740 /* Do not inherit to_memory_map. */
741 /* Do not inherit to_flash_erase. */
742 /* Do not inherit to_flash_done. */
746 /* Clean up a target struct so it no longer has any zero pointers in
747 it. Some entries are defaulted to a method that print an error,
748 others are hard-wired to a standard recursive default. */
750 #define de_fault(field, value) \
751 if (!current_target.field) \
752 current_target.field = value
755 (void (*) (char *, int))
760 de_fault (to_post_attach
,
763 de_fault (to_prepare_to_store
,
764 (void (*) (struct regcache
*))
766 de_fault (deprecated_xfer_memory
,
767 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
768 struct mem_attrib
*, struct target_ops
*))
770 de_fault (to_files_info
,
771 (void (*) (struct target_ops
*))
773 de_fault (to_insert_breakpoint
,
774 memory_insert_breakpoint
);
775 de_fault (to_remove_breakpoint
,
776 memory_remove_breakpoint
);
777 de_fault (to_can_use_hw_breakpoint
,
778 (int (*) (int, int, int))
780 de_fault (to_insert_hw_breakpoint
,
781 (int (*) (struct gdbarch
*, struct bp_target_info
*))
783 de_fault (to_remove_hw_breakpoint
,
784 (int (*) (struct gdbarch
*, struct bp_target_info
*))
786 de_fault (to_insert_watchpoint
,
787 (int (*) (CORE_ADDR
, int, int, struct expression
*))
789 de_fault (to_remove_watchpoint
,
790 (int (*) (CORE_ADDR
, int, int, struct expression
*))
792 de_fault (to_stopped_by_watchpoint
,
795 de_fault (to_stopped_data_address
,
796 (int (*) (struct target_ops
*, CORE_ADDR
*))
798 de_fault (to_watchpoint_addr_within_range
,
799 default_watchpoint_addr_within_range
);
800 de_fault (to_region_ok_for_hw_watchpoint
,
801 default_region_ok_for_hw_watchpoint
);
802 de_fault (to_can_accel_watchpoint_condition
,
803 (int (*) (CORE_ADDR
, int, int, struct expression
*))
805 de_fault (to_terminal_init
,
808 de_fault (to_terminal_inferior
,
811 de_fault (to_terminal_ours_for_output
,
814 de_fault (to_terminal_ours
,
817 de_fault (to_terminal_save_ours
,
820 de_fault (to_terminal_info
,
821 default_terminal_info
);
823 (void (*) (char *, int))
825 de_fault (to_post_startup_inferior
,
828 de_fault (to_insert_fork_catchpoint
,
831 de_fault (to_remove_fork_catchpoint
,
834 de_fault (to_insert_vfork_catchpoint
,
837 de_fault (to_remove_vfork_catchpoint
,
840 de_fault (to_insert_exec_catchpoint
,
843 de_fault (to_remove_exec_catchpoint
,
846 de_fault (to_set_syscall_catchpoint
,
847 (int (*) (int, int, int, int, int *))
849 de_fault (to_has_exited
,
850 (int (*) (int, int, int *))
852 de_fault (to_can_run
,
854 de_fault (to_extra_thread_info
,
855 (char *(*) (struct thread_info
*))
857 de_fault (to_thread_name
,
858 (char *(*) (struct thread_info
*))
863 current_target
.to_xfer_partial
= current_xfer_partial
;
865 (void (*) (char *, struct ui_file
*))
867 de_fault (to_pid_to_exec_file
,
871 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
873 de_fault (to_thread_architecture
,
874 default_thread_architecture
);
875 current_target
.to_read_description
= NULL
;
876 de_fault (to_get_ada_task_ptid
,
877 (ptid_t (*) (long, long))
878 default_get_ada_task_ptid
);
879 de_fault (to_supports_multi_process
,
882 de_fault (to_supports_enable_disable_tracepoint
,
885 de_fault (to_supports_string_tracing
,
888 de_fault (to_trace_init
,
891 de_fault (to_download_tracepoint
,
892 (void (*) (struct bp_location
*))
894 de_fault (to_can_download_tracepoint
,
897 de_fault (to_download_trace_state_variable
,
898 (void (*) (struct trace_state_variable
*))
900 de_fault (to_enable_tracepoint
,
901 (void (*) (struct bp_location
*))
903 de_fault (to_disable_tracepoint
,
904 (void (*) (struct bp_location
*))
906 de_fault (to_trace_set_readonly_regions
,
909 de_fault (to_trace_start
,
912 de_fault (to_get_trace_status
,
913 (int (*) (struct trace_status
*))
915 de_fault (to_get_tracepoint_status
,
916 (void (*) (struct breakpoint
*, struct uploaded_tp
*))
918 de_fault (to_trace_stop
,
921 de_fault (to_trace_find
,
922 (int (*) (enum trace_find_type
, int, CORE_ADDR
, CORE_ADDR
, int *))
924 de_fault (to_get_trace_state_variable_value
,
925 (int (*) (int, LONGEST
*))
927 de_fault (to_save_trace_data
,
928 (int (*) (const char *))
930 de_fault (to_upload_tracepoints
,
931 (int (*) (struct uploaded_tp
**))
933 de_fault (to_upload_trace_state_variables
,
934 (int (*) (struct uploaded_tsv
**))
936 de_fault (to_get_raw_trace_data
,
937 (LONGEST (*) (gdb_byte
*, ULONGEST
, LONGEST
))
939 de_fault (to_get_min_fast_tracepoint_insn_len
,
942 de_fault (to_set_disconnected_tracing
,
945 de_fault (to_set_circular_trace_buffer
,
948 de_fault (to_set_trace_buffer_size
,
951 de_fault (to_set_trace_notes
,
952 (int (*) (const char *, const char *, const char *))
954 de_fault (to_get_tib_address
,
955 (int (*) (ptid_t
, CORE_ADDR
*))
957 de_fault (to_set_permissions
,
960 de_fault (to_static_tracepoint_marker_at
,
961 (int (*) (CORE_ADDR
, struct static_tracepoint_marker
*))
963 de_fault (to_static_tracepoint_markers_by_strid
,
964 (VEC(static_tracepoint_marker_p
) * (*) (const char *))
966 de_fault (to_traceframe_info
,
967 (struct traceframe_info
* (*) (void))
969 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
972 de_fault (to_can_run_breakpoint_commands
,
975 de_fault (to_use_agent
,
978 de_fault (to_can_use_agent
,
981 de_fault (to_augmented_libraries_svr4_read
,
984 de_fault (to_execution_direction
, default_execution_direction
);
988 /* Finally, position the target-stack beneath the squashed
989 "current_target". That way code looking for a non-inherited
990 target method can quickly and simply find it. */
991 current_target
.beneath
= target_stack
;
994 setup_target_debug ();
997 /* Push a new target type into the stack of the existing target accessors,
998 possibly superseding some of the existing accessors.
1000 Rather than allow an empty stack, we always have the dummy target at
1001 the bottom stratum, so we can call the function vectors without
1005 push_target (struct target_ops
*t
)
1007 struct target_ops
**cur
;
1009 /* Check magic number. If wrong, it probably means someone changed
1010 the struct definition, but not all the places that initialize one. */
1011 if (t
->to_magic
!= OPS_MAGIC
)
1013 fprintf_unfiltered (gdb_stderr
,
1014 "Magic number of %s target struct wrong\n",
1016 internal_error (__FILE__
, __LINE__
,
1017 _("failed internal consistency check"));
1020 /* Find the proper stratum to install this target in. */
1021 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1023 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
1027 /* If there's already targets at this stratum, remove them. */
1028 /* FIXME: cagney/2003-10-15: I think this should be popping all
1029 targets to CUR, and not just those at this stratum level. */
1030 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
1032 /* There's already something at this stratum level. Close it,
1033 and un-hook it from the stack. */
1034 struct target_ops
*tmp
= (*cur
);
1036 (*cur
) = (*cur
)->beneath
;
1037 tmp
->beneath
= NULL
;
1041 /* We have removed all targets in our stratum, now add the new one. */
1042 t
->beneath
= (*cur
);
1045 update_current_target ();
1048 /* Remove a target_ops vector from the stack, wherever it may be.
1049 Return how many times it was removed (0 or 1). */
1052 unpush_target (struct target_ops
*t
)
1054 struct target_ops
**cur
;
1055 struct target_ops
*tmp
;
1057 if (t
->to_stratum
== dummy_stratum
)
1058 internal_error (__FILE__
, __LINE__
,
1059 _("Attempt to unpush the dummy target"));
1061 /* Look for the specified target. Note that we assume that a target
1062 can only occur once in the target stack. */
1064 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1070 /* If we don't find target_ops, quit. Only open targets should be
1075 /* Unchain the target. */
1077 (*cur
) = (*cur
)->beneath
;
1078 tmp
->beneath
= NULL
;
1080 update_current_target ();
1082 /* Finally close the target. Note we do this after unchaining, so
1083 any target method calls from within the target_close
1084 implementation don't end up in T anymore. */
1091 pop_all_targets_above (enum strata above_stratum
)
1093 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
1095 if (!unpush_target (target_stack
))
1097 fprintf_unfiltered (gdb_stderr
,
1098 "pop_all_targets couldn't find target %s\n",
1099 target_stack
->to_shortname
);
1100 internal_error (__FILE__
, __LINE__
,
1101 _("failed internal consistency check"));
1108 pop_all_targets (void)
1110 pop_all_targets_above (dummy_stratum
);
1113 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
1116 target_is_pushed (struct target_ops
*t
)
1118 struct target_ops
**cur
;
1120 /* Check magic number. If wrong, it probably means someone changed
1121 the struct definition, but not all the places that initialize one. */
1122 if (t
->to_magic
!= OPS_MAGIC
)
1124 fprintf_unfiltered (gdb_stderr
,
1125 "Magic number of %s target struct wrong\n",
1127 internal_error (__FILE__
, __LINE__
,
1128 _("failed internal consistency check"));
1131 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1138 /* Using the objfile specified in OBJFILE, find the address for the
1139 current thread's thread-local storage with offset OFFSET. */
1141 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1143 volatile CORE_ADDR addr
= 0;
1144 struct target_ops
*target
;
1146 for (target
= current_target
.beneath
;
1148 target
= target
->beneath
)
1150 if (target
->to_get_thread_local_address
!= NULL
)
1155 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
1157 ptid_t ptid
= inferior_ptid
;
1158 volatile struct gdb_exception ex
;
1160 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1164 /* Fetch the load module address for this objfile. */
1165 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1167 /* If it's 0, throw the appropriate exception. */
1169 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1170 _("TLS load module not found"));
1172 addr
= target
->to_get_thread_local_address (target
, ptid
,
1175 /* If an error occurred, print TLS related messages here. Otherwise,
1176 throw the error to some higher catcher. */
1179 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1183 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1184 error (_("Cannot find thread-local variables "
1185 "in this thread library."));
1187 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1188 if (objfile_is_library
)
1189 error (_("Cannot find shared library `%s' in dynamic"
1190 " linker's load module list"), objfile
->name
);
1192 error (_("Cannot find executable file `%s' in dynamic"
1193 " linker's load module list"), objfile
->name
);
1195 case TLS_NOT_ALLOCATED_YET_ERROR
:
1196 if (objfile_is_library
)
1197 error (_("The inferior has not yet allocated storage for"
1198 " thread-local variables in\n"
1199 "the shared library `%s'\n"
1201 objfile
->name
, target_pid_to_str (ptid
));
1203 error (_("The inferior has not yet allocated storage for"
1204 " thread-local variables in\n"
1205 "the executable `%s'\n"
1207 objfile
->name
, target_pid_to_str (ptid
));
1209 case TLS_GENERIC_ERROR
:
1210 if (objfile_is_library
)
1211 error (_("Cannot find thread-local storage for %s, "
1212 "shared library %s:\n%s"),
1213 target_pid_to_str (ptid
),
1214 objfile
->name
, ex
.message
);
1216 error (_("Cannot find thread-local storage for %s, "
1217 "executable file %s:\n%s"),
1218 target_pid_to_str (ptid
),
1219 objfile
->name
, ex
.message
);
1222 throw_exception (ex
);
1227 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1228 TLS is an ABI-specific thing. But we don't do that yet. */
1230 error (_("Cannot find thread-local variables on this target"));
1236 target_xfer_error_to_string (enum target_xfer_error err
)
1238 #define CASE(X) case X: return #X
1241 CASE(TARGET_XFER_E_IO
);
1242 CASE(TARGET_XFER_E_UNAVAILABLE
);
1251 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1253 /* target_read_string -- read a null terminated string, up to LEN bytes,
1254 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1255 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1256 is responsible for freeing it. Return the number of bytes successfully
1260 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1262 int tlen
, offset
, i
;
1266 int buffer_allocated
;
1268 unsigned int nbytes_read
= 0;
1270 gdb_assert (string
);
1272 /* Small for testing. */
1273 buffer_allocated
= 4;
1274 buffer
= xmalloc (buffer_allocated
);
1279 tlen
= MIN (len
, 4 - (memaddr
& 3));
1280 offset
= memaddr
& 3;
1282 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1285 /* The transfer request might have crossed the boundary to an
1286 unallocated region of memory. Retry the transfer, requesting
1290 errcode
= target_read_memory (memaddr
, buf
, 1);
1295 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1299 bytes
= bufptr
- buffer
;
1300 buffer_allocated
*= 2;
1301 buffer
= xrealloc (buffer
, buffer_allocated
);
1302 bufptr
= buffer
+ bytes
;
1305 for (i
= 0; i
< tlen
; i
++)
1307 *bufptr
++ = buf
[i
+ offset
];
1308 if (buf
[i
+ offset
] == '\000')
1310 nbytes_read
+= i
+ 1;
1317 nbytes_read
+= tlen
;
1326 struct target_section_table
*
1327 target_get_section_table (struct target_ops
*target
)
1329 struct target_ops
*t
;
1332 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1334 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1335 if (t
->to_get_section_table
!= NULL
)
1336 return (*t
->to_get_section_table
) (t
);
1341 /* Find a section containing ADDR. */
1343 struct target_section
*
1344 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1346 struct target_section_table
*table
= target_get_section_table (target
);
1347 struct target_section
*secp
;
1352 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1354 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1360 /* Read memory from the live target, even if currently inspecting a
1361 traceframe. The return is the same as that of target_read. */
1364 target_read_live_memory (enum target_object object
,
1365 ULONGEST memaddr
, gdb_byte
*myaddr
, LONGEST len
)
1368 struct cleanup
*cleanup
;
1370 /* Switch momentarily out of tfind mode so to access live memory.
1371 Note that this must not clear global state, such as the frame
1372 cache, which must still remain valid for the previous traceframe.
1373 We may be _building_ the frame cache at this point. */
1374 cleanup
= make_cleanup_restore_traceframe_number ();
1375 set_traceframe_number (-1);
1377 ret
= target_read (current_target
.beneath
, object
, NULL
,
1378 myaddr
, memaddr
, len
);
1380 do_cleanups (cleanup
);
1384 /* Using the set of read-only target sections of OPS, read live
1385 read-only memory. Note that the actual reads start from the
1386 top-most target again.
1388 For interface/parameters/return description see target.h,
1392 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1393 enum target_object object
,
1394 gdb_byte
*readbuf
, ULONGEST memaddr
,
1397 struct target_section
*secp
;
1398 struct target_section_table
*table
;
1400 secp
= target_section_by_addr (ops
, memaddr
);
1402 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1403 secp
->the_bfd_section
)
1406 struct target_section
*p
;
1407 ULONGEST memend
= memaddr
+ len
;
1409 table
= target_get_section_table (ops
);
1411 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1413 if (memaddr
>= p
->addr
)
1415 if (memend
<= p
->endaddr
)
1417 /* Entire transfer is within this section. */
1418 return target_read_live_memory (object
, memaddr
,
1421 else if (memaddr
>= p
->endaddr
)
1423 /* This section ends before the transfer starts. */
1428 /* This section overlaps the transfer. Just do half. */
1429 len
= p
->endaddr
- memaddr
;
1430 return target_read_live_memory (object
, memaddr
,
1440 /* Perform a partial memory transfer.
1441 For docs see target.h, to_xfer_partial. */
1444 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1445 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1450 struct mem_region
*region
;
1451 struct inferior
*inf
;
1453 /* For accesses to unmapped overlay sections, read directly from
1454 files. Must do this first, as MEMADDR may need adjustment. */
1455 if (readbuf
!= NULL
&& overlay_debugging
)
1457 struct obj_section
*section
= find_pc_overlay (memaddr
);
1459 if (pc_in_unmapped_range (memaddr
, section
))
1461 struct target_section_table
*table
1462 = target_get_section_table (ops
);
1463 const char *section_name
= section
->the_bfd_section
->name
;
1465 memaddr
= overlay_mapped_address (memaddr
, section
);
1466 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1469 table
->sections_end
,
1474 /* Try the executable files, if "trust-readonly-sections" is set. */
1475 if (readbuf
!= NULL
&& trust_readonly
)
1477 struct target_section
*secp
;
1478 struct target_section_table
*table
;
1480 secp
= target_section_by_addr (ops
, memaddr
);
1482 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1483 secp
->the_bfd_section
)
1486 table
= target_get_section_table (ops
);
1487 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1490 table
->sections_end
,
1495 /* If reading unavailable memory in the context of traceframes, and
1496 this address falls within a read-only section, fallback to
1497 reading from live memory. */
1498 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1500 VEC(mem_range_s
) *available
;
1502 /* If we fail to get the set of available memory, then the
1503 target does not support querying traceframe info, and so we
1504 attempt reading from the traceframe anyway (assuming the
1505 target implements the old QTro packet then). */
1506 if (traceframe_available_memory (&available
, memaddr
, len
))
1508 struct cleanup
*old_chain
;
1510 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1512 if (VEC_empty (mem_range_s
, available
)
1513 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1515 /* Don't read into the traceframe's available
1517 if (!VEC_empty (mem_range_s
, available
))
1519 LONGEST oldlen
= len
;
1521 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1522 gdb_assert (len
<= oldlen
);
1525 do_cleanups (old_chain
);
1527 /* This goes through the topmost target again. */
1528 res
= memory_xfer_live_readonly_partial (ops
, object
,
1529 readbuf
, memaddr
, len
);
1533 /* No use trying further, we know some memory starting
1534 at MEMADDR isn't available. */
1535 return TARGET_XFER_E_UNAVAILABLE
;
1538 /* Don't try to read more than how much is available, in
1539 case the target implements the deprecated QTro packet to
1540 cater for older GDBs (the target's knowledge of read-only
1541 sections may be outdated by now). */
1542 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1544 do_cleanups (old_chain
);
1548 /* Try GDB's internal data cache. */
1549 region
= lookup_mem_region (memaddr
);
1550 /* region->hi == 0 means there's no upper bound. */
1551 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1554 reg_len
= region
->hi
- memaddr
;
1556 switch (region
->attrib
.mode
)
1559 if (writebuf
!= NULL
)
1564 if (readbuf
!= NULL
)
1569 /* We only support writing to flash during "load" for now. */
1570 if (writebuf
!= NULL
)
1571 error (_("Writing to flash memory forbidden in this context"));
1578 if (!ptid_equal (inferior_ptid
, null_ptid
))
1579 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1584 /* The dcache reads whole cache lines; that doesn't play well
1585 with reading from a trace buffer, because reading outside of
1586 the collected memory range fails. */
1587 && get_traceframe_number () == -1
1588 && (region
->attrib
.cache
1589 || (stack_cache_enabled_p
&& object
== TARGET_OBJECT_STACK_MEMORY
)))
1591 if (readbuf
!= NULL
)
1592 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
, readbuf
,
1595 /* FIXME drow/2006-08-09: If we're going to preserve const
1596 correctness dcache_xfer_memory should take readbuf and
1598 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
,
1607 /* If none of those methods found the memory we wanted, fall back
1608 to a target partial transfer. Normally a single call to
1609 to_xfer_partial is enough; if it doesn't recognize an object
1610 it will call the to_xfer_partial of the next target down.
1611 But for memory this won't do. Memory is the only target
1612 object which can be read from more than one valid target.
1613 A core file, for instance, could have some of memory but
1614 delegate other bits to the target below it. So, we must
1615 manually try all targets. */
1619 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1620 readbuf
, writebuf
, memaddr
, reg_len
);
1624 /* We want to continue past core files to executables, but not
1625 past a running target's memory. */
1626 if (ops
->to_has_all_memory (ops
))
1631 while (ops
!= NULL
);
1633 /* Make sure the cache gets updated no matter what - if we are writing
1634 to the stack. Even if this write is not tagged as such, we still need
1635 to update the cache. */
1640 && !region
->attrib
.cache
1641 && stack_cache_enabled_p
1642 && object
!= TARGET_OBJECT_STACK_MEMORY
)
1644 dcache_update (target_dcache
, memaddr
, (void *) writebuf
, res
);
1647 /* If we still haven't got anything, return the last error. We
1652 /* Perform a partial memory transfer. For docs see target.h,
1656 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1657 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1662 /* Zero length requests are ok and require no work. */
1666 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1667 breakpoint insns, thus hiding out from higher layers whether
1668 there are software breakpoints inserted in the code stream. */
1669 if (readbuf
!= NULL
)
1671 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
);
1673 if (res
> 0 && !show_memory_breakpoints
)
1674 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1679 struct cleanup
*old_chain
;
1681 buf
= xmalloc (len
);
1682 old_chain
= make_cleanup (xfree
, buf
);
1683 memcpy (buf
, writebuf
, len
);
1685 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1686 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
);
1688 do_cleanups (old_chain
);
1695 restore_show_memory_breakpoints (void *arg
)
1697 show_memory_breakpoints
= (uintptr_t) arg
;
1701 make_show_memory_breakpoints_cleanup (int show
)
1703 int current
= show_memory_breakpoints
;
1705 show_memory_breakpoints
= show
;
1706 return make_cleanup (restore_show_memory_breakpoints
,
1707 (void *) (uintptr_t) current
);
1710 /* For docs see target.h, to_xfer_partial. */
1713 target_xfer_partial (struct target_ops
*ops
,
1714 enum target_object object
, const char *annex
,
1715 void *readbuf
, const void *writebuf
,
1716 ULONGEST offset
, LONGEST len
)
1720 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1722 if (writebuf
&& !may_write_memory
)
1723 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1724 core_addr_to_string_nz (offset
), plongest (len
));
1726 /* If this is a memory transfer, let the memory-specific code
1727 have a look at it instead. Memory transfers are more
1729 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
)
1730 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1731 writebuf
, offset
, len
);
1734 enum target_object raw_object
= object
;
1736 /* If this is a raw memory transfer, request the normal
1737 memory object from other layers. */
1738 if (raw_object
== TARGET_OBJECT_RAW_MEMORY
)
1739 raw_object
= TARGET_OBJECT_MEMORY
;
1741 retval
= ops
->to_xfer_partial (ops
, raw_object
, annex
, readbuf
,
1742 writebuf
, offset
, len
);
1747 const unsigned char *myaddr
= NULL
;
1749 fprintf_unfiltered (gdb_stdlog
,
1750 "%s:target_xfer_partial "
1751 "(%d, %s, %s, %s, %s, %s) = %s",
1754 (annex
? annex
: "(null)"),
1755 host_address_to_string (readbuf
),
1756 host_address_to_string (writebuf
),
1757 core_addr_to_string_nz (offset
),
1758 plongest (len
), plongest (retval
));
1764 if (retval
> 0 && myaddr
!= NULL
)
1768 fputs_unfiltered (", bytes =", gdb_stdlog
);
1769 for (i
= 0; i
< retval
; i
++)
1771 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1773 if (targetdebug
< 2 && i
> 0)
1775 fprintf_unfiltered (gdb_stdlog
, " ...");
1778 fprintf_unfiltered (gdb_stdlog
, "\n");
1781 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1785 fputc_unfiltered ('\n', gdb_stdlog
);
1790 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
1791 GDB's memory at MYADDR. Returns either 0 for success or an errno value
1792 if any error occurs.
1794 If an error occurs, no guarantee is made about the contents of the data at
1795 MYADDR. In particular, the caller should not depend upon partial reads
1796 filling the buffer with good data. There is no way for the caller to know
1797 how much good data might have been transfered anyway. Callers that can
1798 deal with partial reads should call target_read (which will retry until
1799 it makes no progress, and then return how much was transferred). */
1802 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1804 /* Dispatch to the topmost target, not the flattened current_target.
1805 Memory accesses check target->to_has_(all_)memory, and the
1806 flattened target doesn't inherit those. */
1807 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1808 myaddr
, memaddr
, len
) == len
)
1814 /* Like target_read_memory, but specify explicitly that this is a read from
1815 the target's stack. This may trigger different cache behavior. */
1818 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1820 /* Dispatch to the topmost target, not the flattened current_target.
1821 Memory accesses check target->to_has_(all_)memory, and the
1822 flattened target doesn't inherit those. */
1824 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1825 myaddr
, memaddr
, len
) == len
)
1831 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1832 Returns either 0 for success or an errno value if any error occurs.
1833 If an error occurs, no guarantee is made about how much data got written.
1834 Callers that can deal with partial writes should call target_write. */
1837 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1839 /* Dispatch to the topmost target, not the flattened current_target.
1840 Memory accesses check target->to_has_(all_)memory, and the
1841 flattened target doesn't inherit those. */
1842 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1843 myaddr
, memaddr
, len
) == len
)
1849 /* Write LEN bytes from MYADDR to target raw memory at address
1850 MEMADDR. Returns either 0 for success or an errno value if any
1851 error occurs. If an error occurs, no guarantee is made about how
1852 much data got written. Callers that can deal with partial writes
1853 should call target_write. */
1856 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1858 /* Dispatch to the topmost target, not the flattened current_target.
1859 Memory accesses check target->to_has_(all_)memory, and the
1860 flattened target doesn't inherit those. */
1861 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1862 myaddr
, memaddr
, len
) == len
)
1868 /* Fetch the target's memory map. */
1871 target_memory_map (void)
1873 VEC(mem_region_s
) *result
;
1874 struct mem_region
*last_one
, *this_one
;
1876 struct target_ops
*t
;
1879 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1881 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1882 if (t
->to_memory_map
!= NULL
)
1888 result
= t
->to_memory_map (t
);
1892 qsort (VEC_address (mem_region_s
, result
),
1893 VEC_length (mem_region_s
, result
),
1894 sizeof (struct mem_region
), mem_region_cmp
);
1896 /* Check that regions do not overlap. Simultaneously assign
1897 a numbering for the "mem" commands to use to refer to
1900 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1902 this_one
->number
= ix
;
1904 if (last_one
&& last_one
->hi
> this_one
->lo
)
1906 warning (_("Overlapping regions in memory map: ignoring"));
1907 VEC_free (mem_region_s
, result
);
1910 last_one
= this_one
;
1917 target_flash_erase (ULONGEST address
, LONGEST length
)
1919 struct target_ops
*t
;
1921 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1922 if (t
->to_flash_erase
!= NULL
)
1925 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1926 hex_string (address
), phex (length
, 0));
1927 t
->to_flash_erase (t
, address
, length
);
1935 target_flash_done (void)
1937 struct target_ops
*t
;
1939 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1940 if (t
->to_flash_done
!= NULL
)
1943 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1944 t
->to_flash_done (t
);
1952 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1953 struct cmd_list_element
*c
, const char *value
)
1955 fprintf_filtered (file
,
1956 _("Mode for reading from readonly sections is %s.\n"),
1960 /* More generic transfers. */
1963 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1964 const char *annex
, gdb_byte
*readbuf
,
1965 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1967 if (object
== TARGET_OBJECT_MEMORY
1968 && ops
->deprecated_xfer_memory
!= NULL
)
1969 /* If available, fall back to the target's
1970 "deprecated_xfer_memory" method. */
1975 if (writebuf
!= NULL
)
1977 void *buffer
= xmalloc (len
);
1978 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1980 memcpy (buffer
, writebuf
, len
);
1981 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1982 1/*write*/, NULL
, ops
);
1983 do_cleanups (cleanup
);
1985 if (readbuf
!= NULL
)
1986 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1987 0/*read*/, NULL
, ops
);
1990 else if (xfered
== 0 && errno
== 0)
1991 /* "deprecated_xfer_memory" uses 0, cross checked against
1992 ERRNO as one indication of an error. */
1997 else if (ops
->beneath
!= NULL
)
1998 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1999 readbuf
, writebuf
, offset
, len
);
2004 /* The xfer_partial handler for the topmost target. Unlike the default,
2005 it does not need to handle memory specially; it just passes all
2006 requests down the stack. */
2009 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
2010 const char *annex
, gdb_byte
*readbuf
,
2011 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
2013 if (ops
->beneath
!= NULL
)
2014 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
2015 readbuf
, writebuf
, offset
, len
);
2020 /* Target vector read/write partial wrapper functions. */
2023 target_read_partial (struct target_ops
*ops
,
2024 enum target_object object
,
2025 const char *annex
, gdb_byte
*buf
,
2026 ULONGEST offset
, LONGEST len
)
2028 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
2032 target_write_partial (struct target_ops
*ops
,
2033 enum target_object object
,
2034 const char *annex
, const gdb_byte
*buf
,
2035 ULONGEST offset
, LONGEST len
)
2037 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
2040 /* Wrappers to perform the full transfer. */
2042 /* For docs on target_read see target.h. */
2045 target_read (struct target_ops
*ops
,
2046 enum target_object object
,
2047 const char *annex
, gdb_byte
*buf
,
2048 ULONGEST offset
, LONGEST len
)
2052 while (xfered
< len
)
2054 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
2055 (gdb_byte
*) buf
+ xfered
,
2056 offset
+ xfered
, len
- xfered
);
2058 /* Call an observer, notifying them of the xfer progress? */
2069 /* Assuming that the entire [begin, end) range of memory cannot be
2070 read, try to read whatever subrange is possible to read.
2072 The function returns, in RESULT, either zero or one memory block.
2073 If there's a readable subrange at the beginning, it is completely
2074 read and returned. Any further readable subrange will not be read.
2075 Otherwise, if there's a readable subrange at the end, it will be
2076 completely read and returned. Any readable subranges before it
2077 (obviously, not starting at the beginning), will be ignored. In
2078 other cases -- either no readable subrange, or readable subrange(s)
2079 that is neither at the beginning, or end, nothing is returned.
2081 The purpose of this function is to handle a read across a boundary
2082 of accessible memory in a case when memory map is not available.
2083 The above restrictions are fine for this case, but will give
2084 incorrect results if the memory is 'patchy'. However, supporting
2085 'patchy' memory would require trying to read every single byte,
2086 and it seems unacceptable solution. Explicit memory map is
2087 recommended for this case -- and target_read_memory_robust will
2088 take care of reading multiple ranges then. */
2091 read_whatever_is_readable (struct target_ops
*ops
,
2092 ULONGEST begin
, ULONGEST end
,
2093 VEC(memory_read_result_s
) **result
)
2095 gdb_byte
*buf
= xmalloc (end
- begin
);
2096 ULONGEST current_begin
= begin
;
2097 ULONGEST current_end
= end
;
2099 memory_read_result_s r
;
2101 /* If we previously failed to read 1 byte, nothing can be done here. */
2102 if (end
- begin
<= 1)
2108 /* Check that either first or the last byte is readable, and give up
2109 if not. This heuristic is meant to permit reading accessible memory
2110 at the boundary of accessible region. */
2111 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2112 buf
, begin
, 1) == 1)
2117 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2118 buf
+ (end
-begin
) - 1, end
- 1, 1) == 1)
2129 /* Loop invariant is that the [current_begin, current_end) was previously
2130 found to be not readable as a whole.
2132 Note loop condition -- if the range has 1 byte, we can't divide the range
2133 so there's no point trying further. */
2134 while (current_end
- current_begin
> 1)
2136 ULONGEST first_half_begin
, first_half_end
;
2137 ULONGEST second_half_begin
, second_half_end
;
2139 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2143 first_half_begin
= current_begin
;
2144 first_half_end
= middle
;
2145 second_half_begin
= middle
;
2146 second_half_end
= current_end
;
2150 first_half_begin
= middle
;
2151 first_half_end
= current_end
;
2152 second_half_begin
= current_begin
;
2153 second_half_end
= middle
;
2156 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2157 buf
+ (first_half_begin
- begin
),
2159 first_half_end
- first_half_begin
);
2161 if (xfer
== first_half_end
- first_half_begin
)
2163 /* This half reads up fine. So, the error must be in the
2165 current_begin
= second_half_begin
;
2166 current_end
= second_half_end
;
2170 /* This half is not readable. Because we've tried one byte, we
2171 know some part of this half if actually redable. Go to the next
2172 iteration to divide again and try to read.
2174 We don't handle the other half, because this function only tries
2175 to read a single readable subrange. */
2176 current_begin
= first_half_begin
;
2177 current_end
= first_half_end
;
2183 /* The [begin, current_begin) range has been read. */
2185 r
.end
= current_begin
;
2190 /* The [current_end, end) range has been read. */
2191 LONGEST rlen
= end
- current_end
;
2193 r
.data
= xmalloc (rlen
);
2194 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2195 r
.begin
= current_end
;
2199 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2203 free_memory_read_result_vector (void *x
)
2205 VEC(memory_read_result_s
) *v
= x
;
2206 memory_read_result_s
*current
;
2209 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2211 xfree (current
->data
);
2213 VEC_free (memory_read_result_s
, v
);
2216 VEC(memory_read_result_s
) *
2217 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2219 VEC(memory_read_result_s
) *result
= 0;
2222 while (xfered
< len
)
2224 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2227 /* If there is no explicit region, a fake one should be created. */
2228 gdb_assert (region
);
2230 if (region
->hi
== 0)
2231 rlen
= len
- xfered
;
2233 rlen
= region
->hi
- offset
;
2235 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2237 /* Cannot read this region. Note that we can end up here only
2238 if the region is explicitly marked inaccessible, or
2239 'inaccessible-by-default' is in effect. */
2244 LONGEST to_read
= min (len
- xfered
, rlen
);
2245 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2247 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2248 (gdb_byte
*) buffer
,
2249 offset
+ xfered
, to_read
);
2250 /* Call an observer, notifying them of the xfer progress? */
2253 /* Got an error reading full chunk. See if maybe we can read
2256 read_whatever_is_readable (ops
, offset
+ xfered
,
2257 offset
+ xfered
+ to_read
, &result
);
2262 struct memory_read_result r
;
2264 r
.begin
= offset
+ xfered
;
2265 r
.end
= r
.begin
+ xfer
;
2266 VEC_safe_push (memory_read_result_s
, result
, &r
);
2276 /* An alternative to target_write with progress callbacks. */
2279 target_write_with_progress (struct target_ops
*ops
,
2280 enum target_object object
,
2281 const char *annex
, const gdb_byte
*buf
,
2282 ULONGEST offset
, LONGEST len
,
2283 void (*progress
) (ULONGEST
, void *), void *baton
)
2287 /* Give the progress callback a chance to set up. */
2289 (*progress
) (0, baton
);
2291 while (xfered
< len
)
2293 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
2294 (gdb_byte
*) buf
+ xfered
,
2295 offset
+ xfered
, len
- xfered
);
2303 (*progress
) (xfer
, baton
);
2311 /* For docs on target_write see target.h. */
2314 target_write (struct target_ops
*ops
,
2315 enum target_object object
,
2316 const char *annex
, const gdb_byte
*buf
,
2317 ULONGEST offset
, LONGEST len
)
2319 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2323 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2324 the size of the transferred data. PADDING additional bytes are
2325 available in *BUF_P. This is a helper function for
2326 target_read_alloc; see the declaration of that function for more
2330 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2331 const char *annex
, gdb_byte
**buf_p
, int padding
)
2333 size_t buf_alloc
, buf_pos
;
2337 /* This function does not have a length parameter; it reads the
2338 entire OBJECT). Also, it doesn't support objects fetched partly
2339 from one target and partly from another (in a different stratum,
2340 e.g. a core file and an executable). Both reasons make it
2341 unsuitable for reading memory. */
2342 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2344 /* Start by reading up to 4K at a time. The target will throttle
2345 this number down if necessary. */
2347 buf
= xmalloc (buf_alloc
);
2351 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2352 buf_pos
, buf_alloc
- buf_pos
- padding
);
2355 /* An error occurred. */
2361 /* Read all there was. */
2371 /* If the buffer is filling up, expand it. */
2372 if (buf_alloc
< buf_pos
* 2)
2375 buf
= xrealloc (buf
, buf_alloc
);
2382 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2383 the size of the transferred data. See the declaration in "target.h"
2384 function for more information about the return value. */
2387 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2388 const char *annex
, gdb_byte
**buf_p
)
2390 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2393 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2394 returned as a string, allocated using xmalloc. If an error occurs
2395 or the transfer is unsupported, NULL is returned. Empty objects
2396 are returned as allocated but empty strings. A warning is issued
2397 if the result contains any embedded NUL bytes. */
2400 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2405 LONGEST i
, transferred
;
2407 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2408 bufstr
= (char *) buffer
;
2410 if (transferred
< 0)
2413 if (transferred
== 0)
2414 return xstrdup ("");
2416 bufstr
[transferred
] = 0;
2418 /* Check for embedded NUL bytes; but allow trailing NULs. */
2419 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2422 warning (_("target object %d, annex %s, "
2423 "contained unexpected null characters"),
2424 (int) object
, annex
? annex
: "(none)");
2431 /* Memory transfer methods. */
2434 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2437 /* This method is used to read from an alternate, non-current
2438 target. This read must bypass the overlay support (as symbols
2439 don't match this target), and GDB's internal cache (wrong cache
2440 for this target). */
2441 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2443 memory_error (EIO
, addr
);
2447 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2448 int len
, enum bfd_endian byte_order
)
2450 gdb_byte buf
[sizeof (ULONGEST
)];
2452 gdb_assert (len
<= sizeof (buf
));
2453 get_target_memory (ops
, addr
, buf
, len
);
2454 return extract_unsigned_integer (buf
, len
, byte_order
);
2458 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2459 struct bp_target_info
*bp_tgt
)
2461 if (!may_insert_breakpoints
)
2463 warning (_("May not insert breakpoints"));
2467 return (*current_target
.to_insert_breakpoint
) (gdbarch
, bp_tgt
);
2471 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2472 struct bp_target_info
*bp_tgt
)
2474 /* This is kind of a weird case to handle, but the permission might
2475 have been changed after breakpoints were inserted - in which case
2476 we should just take the user literally and assume that any
2477 breakpoints should be left in place. */
2478 if (!may_insert_breakpoints
)
2480 warning (_("May not remove breakpoints"));
2484 return (*current_target
.to_remove_breakpoint
) (gdbarch
, bp_tgt
);
2488 target_info (char *args
, int from_tty
)
2490 struct target_ops
*t
;
2491 int has_all_mem
= 0;
2493 if (symfile_objfile
!= NULL
)
2494 printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile
->name
);
2496 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2498 if (!(*t
->to_has_memory
) (t
))
2501 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2504 printf_unfiltered (_("\tWhile running this, "
2505 "GDB does not access memory from...\n"));
2506 printf_unfiltered ("%s:\n", t
->to_longname
);
2507 (t
->to_files_info
) (t
);
2508 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2512 /* This function is called before any new inferior is created, e.g.
2513 by running a program, attaching, or connecting to a target.
2514 It cleans up any state from previous invocations which might
2515 change between runs. This is a subset of what target_preopen
2516 resets (things which might change between targets). */
2519 target_pre_inferior (int from_tty
)
2521 /* Clear out solib state. Otherwise the solib state of the previous
2522 inferior might have survived and is entirely wrong for the new
2523 target. This has been observed on GNU/Linux using glibc 2.3. How
2535 Cannot access memory at address 0xdeadbeef
2538 /* In some OSs, the shared library list is the same/global/shared
2539 across inferiors. If code is shared between processes, so are
2540 memory regions and features. */
2541 if (!gdbarch_has_global_solist (target_gdbarch ()))
2543 no_shared_libraries (NULL
, from_tty
);
2545 invalidate_target_mem_regions ();
2547 target_clear_description ();
2550 agent_capability_invalidate ();
2553 /* Callback for iterate_over_inferiors. Gets rid of the given
2557 dispose_inferior (struct inferior
*inf
, void *args
)
2559 struct thread_info
*thread
;
2561 thread
= any_thread_of_process (inf
->pid
);
2564 switch_to_thread (thread
->ptid
);
2566 /* Core inferiors actually should be detached, not killed. */
2567 if (target_has_execution
)
2570 target_detach (NULL
, 0);
2576 /* This is to be called by the open routine before it does
2580 target_preopen (int from_tty
)
2584 if (have_inferiors ())
2587 || !have_live_inferiors ()
2588 || query (_("A program is being debugged already. Kill it? ")))
2589 iterate_over_inferiors (dispose_inferior
, NULL
);
2591 error (_("Program not killed."));
2594 /* Calling target_kill may remove the target from the stack. But if
2595 it doesn't (which seems like a win for UDI), remove it now. */
2596 /* Leave the exec target, though. The user may be switching from a
2597 live process to a core of the same program. */
2598 pop_all_targets_above (file_stratum
);
2600 target_pre_inferior (from_tty
);
2603 /* Detach a target after doing deferred register stores. */
2606 target_detach (char *args
, int from_tty
)
2608 struct target_ops
* t
;
2610 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2611 /* Don't remove global breakpoints here. They're removed on
2612 disconnection from the target. */
2615 /* If we're in breakpoints-always-inserted mode, have to remove
2616 them before detaching. */
2617 remove_breakpoints_pid (PIDGET (inferior_ptid
));
2619 prepare_for_detach ();
2621 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2623 if (t
->to_detach
!= NULL
)
2625 t
->to_detach (t
, args
, from_tty
);
2627 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2633 internal_error (__FILE__
, __LINE__
, _("could not find a target to detach"));
2637 target_disconnect (char *args
, int from_tty
)
2639 struct target_ops
*t
;
2641 /* If we're in breakpoints-always-inserted mode or if breakpoints
2642 are global across processes, we have to remove them before
2644 remove_breakpoints ();
2646 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2647 if (t
->to_disconnect
!= NULL
)
2650 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2652 t
->to_disconnect (t
, args
, from_tty
);
2660 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2662 struct target_ops
*t
;
2664 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2666 if (t
->to_wait
!= NULL
)
2668 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2672 char *status_string
;
2673 char *options_string
;
2675 status_string
= target_waitstatus_to_string (status
);
2676 options_string
= target_options_to_string (options
);
2677 fprintf_unfiltered (gdb_stdlog
,
2678 "target_wait (%d, status, options={%s})"
2680 PIDGET (ptid
), options_string
,
2681 PIDGET (retval
), status_string
);
2682 xfree (status_string
);
2683 xfree (options_string
);
2694 target_pid_to_str (ptid_t ptid
)
2696 struct target_ops
*t
;
2698 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2700 if (t
->to_pid_to_str
!= NULL
)
2701 return (*t
->to_pid_to_str
) (t
, ptid
);
2704 return normal_pid_to_str (ptid
);
2708 target_thread_name (struct thread_info
*info
)
2710 struct target_ops
*t
;
2712 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2714 if (t
->to_thread_name
!= NULL
)
2715 return (*t
->to_thread_name
) (info
);
2722 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2724 struct target_ops
*t
;
2726 target_dcache_invalidate ();
2728 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2730 if (t
->to_resume
!= NULL
)
2732 t
->to_resume (t
, ptid
, step
, signal
);
2734 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2736 step
? "step" : "continue",
2737 gdb_signal_to_name (signal
));
2739 registers_changed_ptid (ptid
);
2740 set_executing (ptid
, 1);
2741 set_running (ptid
, 1);
2742 clear_inline_frame_state (ptid
);
2751 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2753 struct target_ops
*t
;
2755 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2757 if (t
->to_pass_signals
!= NULL
)
2763 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2766 for (i
= 0; i
< numsigs
; i
++)
2767 if (pass_signals
[i
])
2768 fprintf_unfiltered (gdb_stdlog
, " %s",
2769 gdb_signal_to_name (i
));
2771 fprintf_unfiltered (gdb_stdlog
, " })\n");
2774 (*t
->to_pass_signals
) (numsigs
, pass_signals
);
2781 target_program_signals (int numsigs
, unsigned char *program_signals
)
2783 struct target_ops
*t
;
2785 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2787 if (t
->to_program_signals
!= NULL
)
2793 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2796 for (i
= 0; i
< numsigs
; i
++)
2797 if (program_signals
[i
])
2798 fprintf_unfiltered (gdb_stdlog
, " %s",
2799 gdb_signal_to_name (i
));
2801 fprintf_unfiltered (gdb_stdlog
, " })\n");
2804 (*t
->to_program_signals
) (numsigs
, program_signals
);
2810 /* Look through the list of possible targets for a target that can
2814 target_follow_fork (int follow_child
)
2816 struct target_ops
*t
;
2818 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2820 if (t
->to_follow_fork
!= NULL
)
2822 int retval
= t
->to_follow_fork (t
, follow_child
);
2825 fprintf_unfiltered (gdb_stdlog
, "target_follow_fork (%d) = %d\n",
2826 follow_child
, retval
);
2831 /* Some target returned a fork event, but did not know how to follow it. */
2832 internal_error (__FILE__
, __LINE__
,
2833 _("could not find a target to follow fork"));
2837 target_mourn_inferior (void)
2839 struct target_ops
*t
;
2841 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2843 if (t
->to_mourn_inferior
!= NULL
)
2845 t
->to_mourn_inferior (t
);
2847 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2849 /* We no longer need to keep handles on any of the object files.
2850 Make sure to release them to avoid unnecessarily locking any
2851 of them while we're not actually debugging. */
2852 bfd_cache_close_all ();
2858 internal_error (__FILE__
, __LINE__
,
2859 _("could not find a target to follow mourn inferior"));
2862 /* Look for a target which can describe architectural features, starting
2863 from TARGET. If we find one, return its description. */
2865 const struct target_desc
*
2866 target_read_description (struct target_ops
*target
)
2868 struct target_ops
*t
;
2870 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2871 if (t
->to_read_description
!= NULL
)
2873 const struct target_desc
*tdesc
;
2875 tdesc
= t
->to_read_description (t
);
2883 /* The default implementation of to_search_memory.
2884 This implements a basic search of memory, reading target memory and
2885 performing the search here (as opposed to performing the search in on the
2886 target side with, for example, gdbserver). */
2889 simple_search_memory (struct target_ops
*ops
,
2890 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2891 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2892 CORE_ADDR
*found_addrp
)
2894 /* NOTE: also defined in find.c testcase. */
2895 #define SEARCH_CHUNK_SIZE 16000
2896 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2897 /* Buffer to hold memory contents for searching. */
2898 gdb_byte
*search_buf
;
2899 unsigned search_buf_size
;
2900 struct cleanup
*old_cleanups
;
2902 search_buf_size
= chunk_size
+ pattern_len
- 1;
2904 /* No point in trying to allocate a buffer larger than the search space. */
2905 if (search_space_len
< search_buf_size
)
2906 search_buf_size
= search_space_len
;
2908 search_buf
= malloc (search_buf_size
);
2909 if (search_buf
== NULL
)
2910 error (_("Unable to allocate memory to perform the search."));
2911 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2913 /* Prime the search buffer. */
2915 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2916 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2918 warning (_("Unable to access %s bytes of target "
2919 "memory at %s, halting search."),
2920 pulongest (search_buf_size
), hex_string (start_addr
));
2921 do_cleanups (old_cleanups
);
2925 /* Perform the search.
2927 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2928 When we've scanned N bytes we copy the trailing bytes to the start and
2929 read in another N bytes. */
2931 while (search_space_len
>= pattern_len
)
2933 gdb_byte
*found_ptr
;
2934 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2936 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2937 pattern
, pattern_len
);
2939 if (found_ptr
!= NULL
)
2941 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2943 *found_addrp
= found_addr
;
2944 do_cleanups (old_cleanups
);
2948 /* Not found in this chunk, skip to next chunk. */
2950 /* Don't let search_space_len wrap here, it's unsigned. */
2951 if (search_space_len
>= chunk_size
)
2952 search_space_len
-= chunk_size
;
2954 search_space_len
= 0;
2956 if (search_space_len
>= pattern_len
)
2958 unsigned keep_len
= search_buf_size
- chunk_size
;
2959 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2962 /* Copy the trailing part of the previous iteration to the front
2963 of the buffer for the next iteration. */
2964 gdb_assert (keep_len
== pattern_len
- 1);
2965 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2967 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2969 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2970 search_buf
+ keep_len
, read_addr
,
2971 nr_to_read
) != nr_to_read
)
2973 warning (_("Unable to access %s bytes of target "
2974 "memory at %s, halting search."),
2975 plongest (nr_to_read
),
2976 hex_string (read_addr
));
2977 do_cleanups (old_cleanups
);
2981 start_addr
+= chunk_size
;
2987 do_cleanups (old_cleanups
);
2991 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2992 sequence of bytes in PATTERN with length PATTERN_LEN.
2994 The result is 1 if found, 0 if not found, and -1 if there was an error
2995 requiring halting of the search (e.g. memory read error).
2996 If the pattern is found the address is recorded in FOUND_ADDRP. */
2999 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
3000 const gdb_byte
*pattern
, ULONGEST pattern_len
,
3001 CORE_ADDR
*found_addrp
)
3003 struct target_ops
*t
;
3006 /* We don't use INHERIT to set current_target.to_search_memory,
3007 so we have to scan the target stack and handle targetdebug
3011 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
3012 hex_string (start_addr
));
3014 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3015 if (t
->to_search_memory
!= NULL
)
3020 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
3021 pattern
, pattern_len
, found_addrp
);
3025 /* If a special version of to_search_memory isn't available, use the
3027 found
= simple_search_memory (current_target
.beneath
,
3028 start_addr
, search_space_len
,
3029 pattern
, pattern_len
, found_addrp
);
3033 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
3038 /* Look through the currently pushed targets. If none of them will
3039 be able to restart the currently running process, issue an error
3043 target_require_runnable (void)
3045 struct target_ops
*t
;
3047 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3049 /* If this target knows how to create a new program, then
3050 assume we will still be able to after killing the current
3051 one. Either killing and mourning will not pop T, or else
3052 find_default_run_target will find it again. */
3053 if (t
->to_create_inferior
!= NULL
)
3056 /* Do not worry about thread_stratum targets that can not
3057 create inferiors. Assume they will be pushed again if
3058 necessary, and continue to the process_stratum. */
3059 if (t
->to_stratum
== thread_stratum
3060 || t
->to_stratum
== arch_stratum
)
3063 error (_("The \"%s\" target does not support \"run\". "
3064 "Try \"help target\" or \"continue\"."),
3068 /* This function is only called if the target is running. In that
3069 case there should have been a process_stratum target and it
3070 should either know how to create inferiors, or not... */
3071 internal_error (__FILE__
, __LINE__
, _("No targets found"));
3074 /* Look through the list of possible targets for a target that can
3075 execute a run or attach command without any other data. This is
3076 used to locate the default process stratum.
3078 If DO_MESG is not NULL, the result is always valid (error() is
3079 called for errors); else, return NULL on error. */
3081 static struct target_ops
*
3082 find_default_run_target (char *do_mesg
)
3084 struct target_ops
**t
;
3085 struct target_ops
*runable
= NULL
;
3090 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3093 if ((*t
)->to_can_run
&& target_can_run (*t
))
3103 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3112 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3114 struct target_ops
*t
;
3116 t
= find_default_run_target ("attach");
3117 (t
->to_attach
) (t
, args
, from_tty
);
3122 find_default_create_inferior (struct target_ops
*ops
,
3123 char *exec_file
, char *allargs
, char **env
,
3126 struct target_ops
*t
;
3128 t
= find_default_run_target ("run");
3129 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3134 find_default_can_async_p (void)
3136 struct target_ops
*t
;
3138 /* This may be called before the target is pushed on the stack;
3139 look for the default process stratum. If there's none, gdb isn't
3140 configured with a native debugger, and target remote isn't
3142 t
= find_default_run_target (NULL
);
3143 if (t
&& t
->to_can_async_p
)
3144 return (t
->to_can_async_p
) ();
3149 find_default_is_async_p (void)
3151 struct target_ops
*t
;
3153 /* This may be called before the target is pushed on the stack;
3154 look for the default process stratum. If there's none, gdb isn't
3155 configured with a native debugger, and target remote isn't
3157 t
= find_default_run_target (NULL
);
3158 if (t
&& t
->to_is_async_p
)
3159 return (t
->to_is_async_p
) ();
3164 find_default_supports_non_stop (void)
3166 struct target_ops
*t
;
3168 t
= find_default_run_target (NULL
);
3169 if (t
&& t
->to_supports_non_stop
)
3170 return (t
->to_supports_non_stop
) ();
3175 target_supports_non_stop (void)
3177 struct target_ops
*t
;
3179 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3180 if (t
->to_supports_non_stop
)
3181 return t
->to_supports_non_stop ();
3186 /* Implement the "info proc" command. */
3189 target_info_proc (char *args
, enum info_proc_what what
)
3191 struct target_ops
*t
;
3193 /* If we're already connected to something that can get us OS
3194 related data, use it. Otherwise, try using the native
3196 if (current_target
.to_stratum
>= process_stratum
)
3197 t
= current_target
.beneath
;
3199 t
= find_default_run_target (NULL
);
3201 for (; t
!= NULL
; t
= t
->beneath
)
3203 if (t
->to_info_proc
!= NULL
)
3205 t
->to_info_proc (t
, args
, what
);
3208 fprintf_unfiltered (gdb_stdlog
,
3209 "target_info_proc (\"%s\", %d)\n", args
, what
);
3219 find_default_supports_disable_randomization (void)
3221 struct target_ops
*t
;
3223 t
= find_default_run_target (NULL
);
3224 if (t
&& t
->to_supports_disable_randomization
)
3225 return (t
->to_supports_disable_randomization
) ();
3230 target_supports_disable_randomization (void)
3232 struct target_ops
*t
;
3234 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3235 if (t
->to_supports_disable_randomization
)
3236 return t
->to_supports_disable_randomization ();
3242 target_get_osdata (const char *type
)
3244 struct target_ops
*t
;
3246 /* If we're already connected to something that can get us OS
3247 related data, use it. Otherwise, try using the native
3249 if (current_target
.to_stratum
>= process_stratum
)
3250 t
= current_target
.beneath
;
3252 t
= find_default_run_target ("get OS data");
3257 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3260 /* Determine the current address space of thread PTID. */
3262 struct address_space
*
3263 target_thread_address_space (ptid_t ptid
)
3265 struct address_space
*aspace
;
3266 struct inferior
*inf
;
3267 struct target_ops
*t
;
3269 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3271 if (t
->to_thread_address_space
!= NULL
)
3273 aspace
= t
->to_thread_address_space (t
, ptid
);
3274 gdb_assert (aspace
);
3277 fprintf_unfiltered (gdb_stdlog
,
3278 "target_thread_address_space (%s) = %d\n",
3279 target_pid_to_str (ptid
),
3280 address_space_num (aspace
));
3285 /* Fall-back to the "main" address space of the inferior. */
3286 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3288 if (inf
== NULL
|| inf
->aspace
== NULL
)
3289 internal_error (__FILE__
, __LINE__
,
3290 _("Can't determine the current "
3291 "address space of thread %s\n"),
3292 target_pid_to_str (ptid
));
3298 /* Target file operations. */
3300 static struct target_ops
*
3301 default_fileio_target (void)
3303 /* If we're already connected to something that can perform
3304 file I/O, use it. Otherwise, try using the native target. */
3305 if (current_target
.to_stratum
>= process_stratum
)
3306 return current_target
.beneath
;
3308 return find_default_run_target ("file I/O");
3311 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3312 target file descriptor, or -1 if an error occurs (and set
3315 target_fileio_open (const char *filename
, int flags
, int mode
,
3318 struct target_ops
*t
;
3320 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3322 if (t
->to_fileio_open
!= NULL
)
3324 int fd
= t
->to_fileio_open (filename
, flags
, mode
, target_errno
);
3327 fprintf_unfiltered (gdb_stdlog
,
3328 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3329 filename
, flags
, mode
,
3330 fd
, fd
!= -1 ? 0 : *target_errno
);
3335 *target_errno
= FILEIO_ENOSYS
;
3339 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3340 Return the number of bytes written, or -1 if an error occurs
3341 (and set *TARGET_ERRNO). */
3343 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3344 ULONGEST offset
, int *target_errno
)
3346 struct target_ops
*t
;
3348 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3350 if (t
->to_fileio_pwrite
!= NULL
)
3352 int ret
= t
->to_fileio_pwrite (fd
, write_buf
, len
, offset
,
3356 fprintf_unfiltered (gdb_stdlog
,
3357 "target_fileio_pwrite (%d,...,%d,%s) "
3359 fd
, len
, pulongest (offset
),
3360 ret
, ret
!= -1 ? 0 : *target_errno
);
3365 *target_errno
= FILEIO_ENOSYS
;
3369 /* Read up to LEN bytes FD on the target into READ_BUF.
3370 Return the number of bytes read, or -1 if an error occurs
3371 (and set *TARGET_ERRNO). */
3373 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3374 ULONGEST offset
, int *target_errno
)
3376 struct target_ops
*t
;
3378 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3380 if (t
->to_fileio_pread
!= NULL
)
3382 int ret
= t
->to_fileio_pread (fd
, read_buf
, len
, offset
,
3386 fprintf_unfiltered (gdb_stdlog
,
3387 "target_fileio_pread (%d,...,%d,%s) "
3389 fd
, len
, pulongest (offset
),
3390 ret
, ret
!= -1 ? 0 : *target_errno
);
3395 *target_errno
= FILEIO_ENOSYS
;
3399 /* Close FD on the target. Return 0, or -1 if an error occurs
3400 (and set *TARGET_ERRNO). */
3402 target_fileio_close (int fd
, int *target_errno
)
3404 struct target_ops
*t
;
3406 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3408 if (t
->to_fileio_close
!= NULL
)
3410 int ret
= t
->to_fileio_close (fd
, target_errno
);
3413 fprintf_unfiltered (gdb_stdlog
,
3414 "target_fileio_close (%d) = %d (%d)\n",
3415 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3420 *target_errno
= FILEIO_ENOSYS
;
3424 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3425 occurs (and set *TARGET_ERRNO). */
3427 target_fileio_unlink (const char *filename
, int *target_errno
)
3429 struct target_ops
*t
;
3431 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3433 if (t
->to_fileio_unlink
!= NULL
)
3435 int ret
= t
->to_fileio_unlink (filename
, target_errno
);
3438 fprintf_unfiltered (gdb_stdlog
,
3439 "target_fileio_unlink (%s) = %d (%d)\n",
3440 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3445 *target_errno
= FILEIO_ENOSYS
;
3449 /* Read value of symbolic link FILENAME on the target. Return a
3450 null-terminated string allocated via xmalloc, or NULL if an error
3451 occurs (and set *TARGET_ERRNO). */
3453 target_fileio_readlink (const char *filename
, int *target_errno
)
3455 struct target_ops
*t
;
3457 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3459 if (t
->to_fileio_readlink
!= NULL
)
3461 char *ret
= t
->to_fileio_readlink (filename
, target_errno
);
3464 fprintf_unfiltered (gdb_stdlog
,
3465 "target_fileio_readlink (%s) = %s (%d)\n",
3466 filename
, ret
? ret
: "(nil)",
3467 ret
? 0 : *target_errno
);
3472 *target_errno
= FILEIO_ENOSYS
;
3477 target_fileio_close_cleanup (void *opaque
)
3479 int fd
= *(int *) opaque
;
3482 target_fileio_close (fd
, &target_errno
);
3485 /* Read target file FILENAME. Store the result in *BUF_P and
3486 return the size of the transferred data. PADDING additional bytes are
3487 available in *BUF_P. This is a helper function for
3488 target_fileio_read_alloc; see the declaration of that function for more
3492 target_fileio_read_alloc_1 (const char *filename
,
3493 gdb_byte
**buf_p
, int padding
)
3495 struct cleanup
*close_cleanup
;
3496 size_t buf_alloc
, buf_pos
;
3502 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3506 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3508 /* Start by reading up to 4K at a time. The target will throttle
3509 this number down if necessary. */
3511 buf
= xmalloc (buf_alloc
);
3515 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3516 buf_alloc
- buf_pos
- padding
, buf_pos
,
3520 /* An error occurred. */
3521 do_cleanups (close_cleanup
);
3527 /* Read all there was. */
3528 do_cleanups (close_cleanup
);
3538 /* If the buffer is filling up, expand it. */
3539 if (buf_alloc
< buf_pos
* 2)
3542 buf
= xrealloc (buf
, buf_alloc
);
3549 /* Read target file FILENAME. Store the result in *BUF_P and return
3550 the size of the transferred data. See the declaration in "target.h"
3551 function for more information about the return value. */
3554 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3556 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3559 /* Read target file FILENAME. The result is NUL-terminated and
3560 returned as a string, allocated using xmalloc. If an error occurs
3561 or the transfer is unsupported, NULL is returned. Empty objects
3562 are returned as allocated but empty strings. A warning is issued
3563 if the result contains any embedded NUL bytes. */
3566 target_fileio_read_stralloc (const char *filename
)
3570 LONGEST i
, transferred
;
3572 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3573 bufstr
= (char *) buffer
;
3575 if (transferred
< 0)
3578 if (transferred
== 0)
3579 return xstrdup ("");
3581 bufstr
[transferred
] = 0;
3583 /* Check for embedded NUL bytes; but allow trailing NULs. */
3584 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3587 warning (_("target file %s "
3588 "contained unexpected null characters"),
3598 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3600 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3604 default_watchpoint_addr_within_range (struct target_ops
*target
,
3606 CORE_ADDR start
, int length
)
3608 return addr
>= start
&& addr
< start
+ length
;
3611 static struct gdbarch
*
3612 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3614 return target_gdbarch ();
3630 return_minus_one (void)
3636 * Find the next target down the stack from the specified target.
3640 find_target_beneath (struct target_ops
*t
)
3646 /* The inferior process has died. Long live the inferior! */
3649 generic_mourn_inferior (void)
3653 ptid
= inferior_ptid
;
3654 inferior_ptid
= null_ptid
;
3656 /* Mark breakpoints uninserted in case something tries to delete a
3657 breakpoint while we delete the inferior's threads (which would
3658 fail, since the inferior is long gone). */
3659 mark_breakpoints_out ();
3661 if (!ptid_equal (ptid
, null_ptid
))
3663 int pid
= ptid_get_pid (ptid
);
3664 exit_inferior (pid
);
3667 /* Note this wipes step-resume breakpoints, so needs to be done
3668 after exit_inferior, which ends up referencing the step-resume
3669 breakpoints through clear_thread_inferior_resources. */
3670 breakpoint_init_inferior (inf_exited
);
3672 registers_changed ();
3674 reopen_exec_file ();
3675 reinit_frame_cache ();
3677 if (deprecated_detach_hook
)
3678 deprecated_detach_hook ();
3681 /* Convert a normal process ID to a string. Returns the string in a
3685 normal_pid_to_str (ptid_t ptid
)
3687 static char buf
[32];
3689 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3694 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3696 return normal_pid_to_str (ptid
);
3699 /* Error-catcher for target_find_memory_regions. */
3701 dummy_find_memory_regions (find_memory_region_ftype ignore1
, void *ignore2
)
3703 error (_("Command not implemented for this target."));
3707 /* Error-catcher for target_make_corefile_notes. */
3709 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
3711 error (_("Command not implemented for this target."));
3715 /* Error-catcher for target_get_bookmark. */
3717 dummy_get_bookmark (char *ignore1
, int ignore2
)
3723 /* Error-catcher for target_goto_bookmark. */
3725 dummy_goto_bookmark (gdb_byte
*ignore
, int from_tty
)
3730 /* Set up the handful of non-empty slots needed by the dummy target
3734 init_dummy_target (void)
3736 dummy_target
.to_shortname
= "None";
3737 dummy_target
.to_longname
= "None";
3738 dummy_target
.to_doc
= "";
3739 dummy_target
.to_attach
= find_default_attach
;
3740 dummy_target
.to_detach
=
3741 (void (*)(struct target_ops
*, char *, int))target_ignore
;
3742 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3743 dummy_target
.to_can_async_p
= find_default_can_async_p
;
3744 dummy_target
.to_is_async_p
= find_default_is_async_p
;
3745 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3746 dummy_target
.to_supports_disable_randomization
3747 = find_default_supports_disable_randomization
;
3748 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3749 dummy_target
.to_stratum
= dummy_stratum
;
3750 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
3751 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
3752 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
3753 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
3754 dummy_target
.to_xfer_partial
= default_xfer_partial
;
3755 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3756 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3757 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3758 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3759 dummy_target
.to_has_execution
3760 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3761 dummy_target
.to_stopped_by_watchpoint
= return_zero
;
3762 dummy_target
.to_stopped_data_address
=
3763 (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
;
3764 dummy_target
.to_magic
= OPS_MAGIC
;
3768 debug_to_open (char *args
, int from_tty
)
3770 debug_target
.to_open (args
, from_tty
);
3772 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3776 target_close (struct target_ops
*targ
)
3778 gdb_assert (!target_is_pushed (targ
));
3780 if (targ
->to_xclose
!= NULL
)
3781 targ
->to_xclose (targ
);
3782 else if (targ
->to_close
!= NULL
)
3786 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3790 target_attach (char *args
, int from_tty
)
3792 struct target_ops
*t
;
3794 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3796 if (t
->to_attach
!= NULL
)
3798 t
->to_attach (t
, args
, from_tty
);
3800 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3806 internal_error (__FILE__
, __LINE__
,
3807 _("could not find a target to attach"));
3811 target_thread_alive (ptid_t ptid
)
3813 struct target_ops
*t
;
3815 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3817 if (t
->to_thread_alive
!= NULL
)
3821 retval
= t
->to_thread_alive (t
, ptid
);
3823 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3824 PIDGET (ptid
), retval
);
3834 target_find_new_threads (void)
3836 struct target_ops
*t
;
3838 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3840 if (t
->to_find_new_threads
!= NULL
)
3842 t
->to_find_new_threads (t
);
3844 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3852 target_stop (ptid_t ptid
)
3856 warning (_("May not interrupt or stop the target, ignoring attempt"));
3860 (*current_target
.to_stop
) (ptid
);
3864 debug_to_post_attach (int pid
)
3866 debug_target
.to_post_attach (pid
);
3868 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3871 /* Concatenate ELEM to LIST, a comma separate list, and return the
3872 result. The LIST incoming argument is released. */
3875 str_comma_list_concat_elem (char *list
, const char *elem
)
3878 return xstrdup (elem
);
3880 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3883 /* Helper for target_options_to_string. If OPT is present in
3884 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3885 Returns the new resulting string. OPT is removed from
3889 do_option (int *target_options
, char *ret
,
3890 int opt
, char *opt_str
)
3892 if ((*target_options
& opt
) != 0)
3894 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3895 *target_options
&= ~opt
;
3902 target_options_to_string (int target_options
)
3906 #define DO_TARG_OPTION(OPT) \
3907 ret = do_option (&target_options, ret, OPT, #OPT)
3909 DO_TARG_OPTION (TARGET_WNOHANG
);
3911 if (target_options
!= 0)
3912 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3920 debug_print_register (const char * func
,
3921 struct regcache
*regcache
, int regno
)
3923 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3925 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3926 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3927 && gdbarch_register_name (gdbarch
, regno
) != NULL
3928 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3929 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3930 gdbarch_register_name (gdbarch
, regno
));
3932 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3933 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3935 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3936 int i
, size
= register_size (gdbarch
, regno
);
3937 gdb_byte buf
[MAX_REGISTER_SIZE
];
3939 regcache_raw_collect (regcache
, regno
, buf
);
3940 fprintf_unfiltered (gdb_stdlog
, " = ");
3941 for (i
= 0; i
< size
; i
++)
3943 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3945 if (size
<= sizeof (LONGEST
))
3947 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3949 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3950 core_addr_to_string_nz (val
), plongest (val
));
3953 fprintf_unfiltered (gdb_stdlog
, "\n");
3957 target_fetch_registers (struct regcache
*regcache
, int regno
)
3959 struct target_ops
*t
;
3961 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3963 if (t
->to_fetch_registers
!= NULL
)
3965 t
->to_fetch_registers (t
, regcache
, regno
);
3967 debug_print_register ("target_fetch_registers", regcache
, regno
);
3974 target_store_registers (struct regcache
*regcache
, int regno
)
3976 struct target_ops
*t
;
3978 if (!may_write_registers
)
3979 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3981 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3983 if (t
->to_store_registers
!= NULL
)
3985 t
->to_store_registers (t
, regcache
, regno
);
3988 debug_print_register ("target_store_registers", regcache
, regno
);
3998 target_core_of_thread (ptid_t ptid
)
4000 struct target_ops
*t
;
4002 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4004 if (t
->to_core_of_thread
!= NULL
)
4006 int retval
= t
->to_core_of_thread (t
, ptid
);
4009 fprintf_unfiltered (gdb_stdlog
,
4010 "target_core_of_thread (%d) = %d\n",
4011 PIDGET (ptid
), retval
);
4020 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
4022 struct target_ops
*t
;
4024 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4026 if (t
->to_verify_memory
!= NULL
)
4028 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
4031 fprintf_unfiltered (gdb_stdlog
,
4032 "target_verify_memory (%s, %s) = %d\n",
4033 paddress (target_gdbarch (), memaddr
),
4043 /* The documentation for this function is in its prototype declaration in
4047 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4049 struct target_ops
*t
;
4051 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4052 if (t
->to_insert_mask_watchpoint
!= NULL
)
4056 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
4059 fprintf_unfiltered (gdb_stdlog
, "\
4060 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
4061 core_addr_to_string (addr
),
4062 core_addr_to_string (mask
), rw
, ret
);
4070 /* The documentation for this function is in its prototype declaration in
4074 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4076 struct target_ops
*t
;
4078 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4079 if (t
->to_remove_mask_watchpoint
!= NULL
)
4083 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
4086 fprintf_unfiltered (gdb_stdlog
, "\
4087 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
4088 core_addr_to_string (addr
),
4089 core_addr_to_string (mask
), rw
, ret
);
4097 /* The documentation for this function is in its prototype declaration
4101 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4103 struct target_ops
*t
;
4105 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4106 if (t
->to_masked_watch_num_registers
!= NULL
)
4107 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4112 /* The documentation for this function is in its prototype declaration
4116 target_ranged_break_num_registers (void)
4118 struct target_ops
*t
;
4120 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4121 if (t
->to_ranged_break_num_registers
!= NULL
)
4122 return t
->to_ranged_break_num_registers (t
);
4130 target_supports_btrace (void)
4132 struct target_ops
*t
;
4134 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4135 if (t
->to_supports_btrace
!= NULL
)
4136 return t
->to_supports_btrace ();
4143 struct btrace_target_info
*
4144 target_enable_btrace (ptid_t ptid
)
4146 struct target_ops
*t
;
4148 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4149 if (t
->to_enable_btrace
!= NULL
)
4150 return t
->to_enable_btrace (ptid
);
4159 target_disable_btrace (struct btrace_target_info
*btinfo
)
4161 struct target_ops
*t
;
4163 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4164 if (t
->to_disable_btrace
!= NULL
)
4165 return t
->to_disable_btrace (btinfo
);
4173 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4175 struct target_ops
*t
;
4177 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4178 if (t
->to_teardown_btrace
!= NULL
)
4179 return t
->to_teardown_btrace (btinfo
);
4186 VEC (btrace_block_s
) *
4187 target_read_btrace (struct btrace_target_info
*btinfo
,
4188 enum btrace_read_type type
)
4190 struct target_ops
*t
;
4192 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4193 if (t
->to_read_btrace
!= NULL
)
4194 return t
->to_read_btrace (btinfo
, type
);
4203 target_stop_recording (void)
4205 struct target_ops
*t
;
4207 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4208 if (t
->to_stop_recording
!= NULL
)
4210 t
->to_stop_recording ();
4214 /* This is optional. */
4220 target_info_record (void)
4222 struct target_ops
*t
;
4224 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4225 if (t
->to_info_record
!= NULL
)
4227 t
->to_info_record ();
4237 target_save_record (const char *filename
)
4239 struct target_ops
*t
;
4241 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4242 if (t
->to_save_record
!= NULL
)
4244 t
->to_save_record (filename
);
4254 target_supports_delete_record (void)
4256 struct target_ops
*t
;
4258 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4259 if (t
->to_delete_record
!= NULL
)
4268 target_delete_record (void)
4270 struct target_ops
*t
;
4272 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4273 if (t
->to_delete_record
!= NULL
)
4275 t
->to_delete_record ();
4285 target_record_is_replaying (void)
4287 struct target_ops
*t
;
4289 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4290 if (t
->to_record_is_replaying
!= NULL
)
4291 return t
->to_record_is_replaying ();
4299 target_goto_record_begin (void)
4301 struct target_ops
*t
;
4303 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4304 if (t
->to_goto_record_begin
!= NULL
)
4306 t
->to_goto_record_begin ();
4316 target_goto_record_end (void)
4318 struct target_ops
*t
;
4320 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4321 if (t
->to_goto_record_end
!= NULL
)
4323 t
->to_goto_record_end ();
4333 target_goto_record (ULONGEST insn
)
4335 struct target_ops
*t
;
4337 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4338 if (t
->to_goto_record
!= NULL
)
4340 t
->to_goto_record (insn
);
4350 target_insn_history (int size
, int flags
)
4352 struct target_ops
*t
;
4354 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4355 if (t
->to_insn_history
!= NULL
)
4357 t
->to_insn_history (size
, flags
);
4367 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4369 struct target_ops
*t
;
4371 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4372 if (t
->to_insn_history_from
!= NULL
)
4374 t
->to_insn_history_from (from
, size
, flags
);
4384 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4386 struct target_ops
*t
;
4388 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4389 if (t
->to_insn_history_range
!= NULL
)
4391 t
->to_insn_history_range (begin
, end
, flags
);
4401 target_call_history (int size
, int flags
)
4403 struct target_ops
*t
;
4405 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4406 if (t
->to_call_history
!= NULL
)
4408 t
->to_call_history (size
, flags
);
4418 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4420 struct target_ops
*t
;
4422 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4423 if (t
->to_call_history_from
!= NULL
)
4425 t
->to_call_history_from (begin
, size
, flags
);
4435 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4437 struct target_ops
*t
;
4439 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4440 if (t
->to_call_history_range
!= NULL
)
4442 t
->to_call_history_range (begin
, end
, flags
);
4450 debug_to_prepare_to_store (struct regcache
*regcache
)
4452 debug_target
.to_prepare_to_store (regcache
);
4454 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4458 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4459 int write
, struct mem_attrib
*attrib
,
4460 struct target_ops
*target
)
4464 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4467 fprintf_unfiltered (gdb_stdlog
,
4468 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4469 paddress (target_gdbarch (), memaddr
), len
,
4470 write
? "write" : "read", retval
);
4476 fputs_unfiltered (", bytes =", gdb_stdlog
);
4477 for (i
= 0; i
< retval
; i
++)
4479 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4481 if (targetdebug
< 2 && i
> 0)
4483 fprintf_unfiltered (gdb_stdlog
, " ...");
4486 fprintf_unfiltered (gdb_stdlog
, "\n");
4489 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4493 fputc_unfiltered ('\n', gdb_stdlog
);
4499 debug_to_files_info (struct target_ops
*target
)
4501 debug_target
.to_files_info (target
);
4503 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4507 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
4508 struct bp_target_info
*bp_tgt
)
4512 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
4514 fprintf_unfiltered (gdb_stdlog
,
4515 "target_insert_breakpoint (%s, xxx) = %ld\n",
4516 core_addr_to_string (bp_tgt
->placed_address
),
4517 (unsigned long) retval
);
4522 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
4523 struct bp_target_info
*bp_tgt
)
4527 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
4529 fprintf_unfiltered (gdb_stdlog
,
4530 "target_remove_breakpoint (%s, xxx) = %ld\n",
4531 core_addr_to_string (bp_tgt
->placed_address
),
4532 (unsigned long) retval
);
4537 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
4541 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
4543 fprintf_unfiltered (gdb_stdlog
,
4544 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4545 (unsigned long) type
,
4546 (unsigned long) cnt
,
4547 (unsigned long) from_tty
,
4548 (unsigned long) retval
);
4553 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
4557 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
4559 fprintf_unfiltered (gdb_stdlog
,
4560 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4561 core_addr_to_string (addr
), (unsigned long) len
,
4562 core_addr_to_string (retval
));
4567 debug_to_can_accel_watchpoint_condition (CORE_ADDR addr
, int len
, int rw
,
4568 struct expression
*cond
)
4572 retval
= debug_target
.to_can_accel_watchpoint_condition (addr
, len
,
4575 fprintf_unfiltered (gdb_stdlog
,
4576 "target_can_accel_watchpoint_condition "
4577 "(%s, %d, %d, %s) = %ld\n",
4578 core_addr_to_string (addr
), len
, rw
,
4579 host_address_to_string (cond
), (unsigned long) retval
);
4584 debug_to_stopped_by_watchpoint (void)
4588 retval
= debug_target
.to_stopped_by_watchpoint ();
4590 fprintf_unfiltered (gdb_stdlog
,
4591 "target_stopped_by_watchpoint () = %ld\n",
4592 (unsigned long) retval
);
4597 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4601 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4603 fprintf_unfiltered (gdb_stdlog
,
4604 "target_stopped_data_address ([%s]) = %ld\n",
4605 core_addr_to_string (*addr
),
4606 (unsigned long)retval
);
4611 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4613 CORE_ADDR start
, int length
)
4617 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4620 fprintf_filtered (gdb_stdlog
,
4621 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4622 core_addr_to_string (addr
), core_addr_to_string (start
),
4628 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
4629 struct bp_target_info
*bp_tgt
)
4633 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
4635 fprintf_unfiltered (gdb_stdlog
,
4636 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4637 core_addr_to_string (bp_tgt
->placed_address
),
4638 (unsigned long) retval
);
4643 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
4644 struct bp_target_info
*bp_tgt
)
4648 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
4650 fprintf_unfiltered (gdb_stdlog
,
4651 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4652 core_addr_to_string (bp_tgt
->placed_address
),
4653 (unsigned long) retval
);
4658 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
4659 struct expression
*cond
)
4663 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
, cond
);
4665 fprintf_unfiltered (gdb_stdlog
,
4666 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4667 core_addr_to_string (addr
), len
, type
,
4668 host_address_to_string (cond
), (unsigned long) retval
);
4673 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
4674 struct expression
*cond
)
4678 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
, cond
);
4680 fprintf_unfiltered (gdb_stdlog
,
4681 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4682 core_addr_to_string (addr
), len
, type
,
4683 host_address_to_string (cond
), (unsigned long) retval
);
4688 debug_to_terminal_init (void)
4690 debug_target
.to_terminal_init ();
4692 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4696 debug_to_terminal_inferior (void)
4698 debug_target
.to_terminal_inferior ();
4700 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4704 debug_to_terminal_ours_for_output (void)
4706 debug_target
.to_terminal_ours_for_output ();
4708 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4712 debug_to_terminal_ours (void)
4714 debug_target
.to_terminal_ours ();
4716 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4720 debug_to_terminal_save_ours (void)
4722 debug_target
.to_terminal_save_ours ();
4724 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4728 debug_to_terminal_info (const char *arg
, int from_tty
)
4730 debug_target
.to_terminal_info (arg
, from_tty
);
4732 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4737 debug_to_load (char *args
, int from_tty
)
4739 debug_target
.to_load (args
, from_tty
);
4741 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4745 debug_to_post_startup_inferior (ptid_t ptid
)
4747 debug_target
.to_post_startup_inferior (ptid
);
4749 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4754 debug_to_insert_fork_catchpoint (int pid
)
4758 retval
= debug_target
.to_insert_fork_catchpoint (pid
);
4760 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4767 debug_to_remove_fork_catchpoint (int pid
)
4771 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
4773 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4780 debug_to_insert_vfork_catchpoint (int pid
)
4784 retval
= debug_target
.to_insert_vfork_catchpoint (pid
);
4786 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4793 debug_to_remove_vfork_catchpoint (int pid
)
4797 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
4799 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4806 debug_to_insert_exec_catchpoint (int pid
)
4810 retval
= debug_target
.to_insert_exec_catchpoint (pid
);
4812 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4819 debug_to_remove_exec_catchpoint (int pid
)
4823 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
4825 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4832 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
4836 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
4838 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4839 pid
, wait_status
, *exit_status
, has_exited
);
4845 debug_to_can_run (void)
4849 retval
= debug_target
.to_can_run ();
4851 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4856 static struct gdbarch
*
4857 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4859 struct gdbarch
*retval
;
4861 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4863 fprintf_unfiltered (gdb_stdlog
,
4864 "target_thread_architecture (%s) = %s [%s]\n",
4865 target_pid_to_str (ptid
),
4866 host_address_to_string (retval
),
4867 gdbarch_bfd_arch_info (retval
)->printable_name
);
4872 debug_to_stop (ptid_t ptid
)
4874 debug_target
.to_stop (ptid
);
4876 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4877 target_pid_to_str (ptid
));
4881 debug_to_rcmd (char *command
,
4882 struct ui_file
*outbuf
)
4884 debug_target
.to_rcmd (command
, outbuf
);
4885 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4889 debug_to_pid_to_exec_file (int pid
)
4893 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
4895 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4902 setup_target_debug (void)
4904 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4906 current_target
.to_open
= debug_to_open
;
4907 current_target
.to_post_attach
= debug_to_post_attach
;
4908 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4909 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4910 current_target
.to_files_info
= debug_to_files_info
;
4911 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4912 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4913 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4914 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4915 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4916 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4917 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4918 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4919 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4920 current_target
.to_watchpoint_addr_within_range
4921 = debug_to_watchpoint_addr_within_range
;
4922 current_target
.to_region_ok_for_hw_watchpoint
4923 = debug_to_region_ok_for_hw_watchpoint
;
4924 current_target
.to_can_accel_watchpoint_condition
4925 = debug_to_can_accel_watchpoint_condition
;
4926 current_target
.to_terminal_init
= debug_to_terminal_init
;
4927 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4928 current_target
.to_terminal_ours_for_output
4929 = debug_to_terminal_ours_for_output
;
4930 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4931 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4932 current_target
.to_terminal_info
= debug_to_terminal_info
;
4933 current_target
.to_load
= debug_to_load
;
4934 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4935 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4936 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4937 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4938 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4939 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4940 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4941 current_target
.to_has_exited
= debug_to_has_exited
;
4942 current_target
.to_can_run
= debug_to_can_run
;
4943 current_target
.to_stop
= debug_to_stop
;
4944 current_target
.to_rcmd
= debug_to_rcmd
;
4945 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4946 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4950 static char targ_desc
[] =
4951 "Names of targets and files being debugged.\nShows the entire \
4952 stack of targets currently in use (including the exec-file,\n\
4953 core-file, and process, if any), as well as the symbol file name.";
4956 do_monitor_command (char *cmd
,
4959 if ((current_target
.to_rcmd
4960 == (void (*) (char *, struct ui_file
*)) tcomplain
)
4961 || (current_target
.to_rcmd
== debug_to_rcmd
4962 && (debug_target
.to_rcmd
4963 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
4964 error (_("\"monitor\" command not supported by this target."));
4965 target_rcmd (cmd
, gdb_stdtarg
);
4968 /* Print the name of each layers of our target stack. */
4971 maintenance_print_target_stack (char *cmd
, int from_tty
)
4973 struct target_ops
*t
;
4975 printf_filtered (_("The current target stack is:\n"));
4977 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4979 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4983 /* Controls if async mode is permitted. */
4984 int target_async_permitted
= 0;
4986 /* The set command writes to this variable. If the inferior is
4987 executing, target_async_permitted is *not* updated. */
4988 static int target_async_permitted_1
= 0;
4991 set_target_async_command (char *args
, int from_tty
,
4992 struct cmd_list_element
*c
)
4994 if (have_live_inferiors ())
4996 target_async_permitted_1
= target_async_permitted
;
4997 error (_("Cannot change this setting while the inferior is running."));
5000 target_async_permitted
= target_async_permitted_1
;
5004 show_target_async_command (struct ui_file
*file
, int from_tty
,
5005 struct cmd_list_element
*c
,
5008 fprintf_filtered (file
,
5009 _("Controlling the inferior in "
5010 "asynchronous mode is %s.\n"), value
);
5013 /* Temporary copies of permission settings. */
5015 static int may_write_registers_1
= 1;
5016 static int may_write_memory_1
= 1;
5017 static int may_insert_breakpoints_1
= 1;
5018 static int may_insert_tracepoints_1
= 1;
5019 static int may_insert_fast_tracepoints_1
= 1;
5020 static int may_stop_1
= 1;
5022 /* Make the user-set values match the real values again. */
5025 update_target_permissions (void)
5027 may_write_registers_1
= may_write_registers
;
5028 may_write_memory_1
= may_write_memory
;
5029 may_insert_breakpoints_1
= may_insert_breakpoints
;
5030 may_insert_tracepoints_1
= may_insert_tracepoints
;
5031 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
5032 may_stop_1
= may_stop
;
5035 /* The one function handles (most of) the permission flags in the same
5039 set_target_permissions (char *args
, int from_tty
,
5040 struct cmd_list_element
*c
)
5042 if (target_has_execution
)
5044 update_target_permissions ();
5045 error (_("Cannot change this setting while the inferior is running."));
5048 /* Make the real values match the user-changed values. */
5049 may_write_registers
= may_write_registers_1
;
5050 may_insert_breakpoints
= may_insert_breakpoints_1
;
5051 may_insert_tracepoints
= may_insert_tracepoints_1
;
5052 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
5053 may_stop
= may_stop_1
;
5054 update_observer_mode ();
5057 /* Set memory write permission independently of observer mode. */
5060 set_write_memory_permission (char *args
, int from_tty
,
5061 struct cmd_list_element
*c
)
5063 /* Make the real values match the user-changed values. */
5064 may_write_memory
= may_write_memory_1
;
5065 update_observer_mode ();
5070 initialize_targets (void)
5072 init_dummy_target ();
5073 push_target (&dummy_target
);
5075 add_info ("target", target_info
, targ_desc
);
5076 add_info ("files", target_info
, targ_desc
);
5078 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
5079 Set target debugging."), _("\
5080 Show target debugging."), _("\
5081 When non-zero, target debugging is enabled. Higher numbers are more\n\
5082 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
5086 &setdebuglist
, &showdebuglist
);
5088 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
5089 &trust_readonly
, _("\
5090 Set mode for reading from readonly sections."), _("\
5091 Show mode for reading from readonly sections."), _("\
5092 When this mode is on, memory reads from readonly sections (such as .text)\n\
5093 will be read from the object file instead of from the target. This will\n\
5094 result in significant performance improvement for remote targets."),
5096 show_trust_readonly
,
5097 &setlist
, &showlist
);
5099 add_com ("monitor", class_obscure
, do_monitor_command
,
5100 _("Send a command to the remote monitor (remote targets only)."));
5102 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5103 _("Print the name of each layer of the internal target stack."),
5104 &maintenanceprintlist
);
5106 add_setshow_boolean_cmd ("target-async", no_class
,
5107 &target_async_permitted_1
, _("\
5108 Set whether gdb controls the inferior in asynchronous mode."), _("\
5109 Show whether gdb controls the inferior in asynchronous mode."), _("\
5110 Tells gdb whether to control the inferior in asynchronous mode."),
5111 set_target_async_command
,
5112 show_target_async_command
,
5116 add_setshow_boolean_cmd ("stack-cache", class_support
,
5117 &stack_cache_enabled_p_1
, _("\
5118 Set cache use for stack access."), _("\
5119 Show cache use for stack access."), _("\
5120 When on, use the data cache for all stack access, regardless of any\n\
5121 configured memory regions. This improves remote performance significantly.\n\
5122 By default, caching for stack access is on."),
5123 set_stack_cache_enabled_p
,
5124 show_stack_cache_enabled_p
,
5125 &setlist
, &showlist
);
5127 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5128 &may_write_registers_1
, _("\
5129 Set permission to write into registers."), _("\
5130 Show permission to write into registers."), _("\
5131 When this permission is on, GDB may write into the target's registers.\n\
5132 Otherwise, any sort of write attempt will result in an error."),
5133 set_target_permissions
, NULL
,
5134 &setlist
, &showlist
);
5136 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5137 &may_write_memory_1
, _("\
5138 Set permission to write into target memory."), _("\
5139 Show permission to write into target memory."), _("\
5140 When this permission is on, GDB may write into the target's memory.\n\
5141 Otherwise, any sort of write attempt will result in an error."),
5142 set_write_memory_permission
, NULL
,
5143 &setlist
, &showlist
);
5145 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5146 &may_insert_breakpoints_1
, _("\
5147 Set permission to insert breakpoints in the target."), _("\
5148 Show permission to insert breakpoints in the target."), _("\
5149 When this permission is on, GDB may insert breakpoints in the program.\n\
5150 Otherwise, any sort of insertion attempt will result in an error."),
5151 set_target_permissions
, NULL
,
5152 &setlist
, &showlist
);
5154 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5155 &may_insert_tracepoints_1
, _("\
5156 Set permission to insert tracepoints in the target."), _("\
5157 Show permission to insert tracepoints in the target."), _("\
5158 When this permission is on, GDB may insert tracepoints in the program.\n\
5159 Otherwise, any sort of insertion attempt will result in an error."),
5160 set_target_permissions
, NULL
,
5161 &setlist
, &showlist
);
5163 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5164 &may_insert_fast_tracepoints_1
, _("\
5165 Set permission to insert fast tracepoints in the target."), _("\
5166 Show permission to insert fast tracepoints in the target."), _("\
5167 When this permission is on, GDB may insert fast tracepoints.\n\
5168 Otherwise, any sort of insertion attempt will result in an error."),
5169 set_target_permissions
, NULL
,
5170 &setlist
, &showlist
);
5172 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5174 Set permission to interrupt or signal the target."), _("\
5175 Show permission to interrupt or signal the target."), _("\
5176 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5177 Otherwise, any attempt to interrupt or stop will be ignored."),
5178 set_target_permissions
, NULL
,
5179 &setlist
, &showlist
);
5182 target_dcache
= dcache_init ();