1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
5 Free Software Foundation, Inc.
7 Contributed by Cygnus Support.
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "gdb_string.h"
38 #include "gdb_assert.h"
40 #include "exceptions.h"
41 #include "target-descriptions.h"
42 #include "gdbthread.h"
45 #include "inline-frame.h"
46 #include "tracepoint.h"
48 static void target_info (char *, int);
50 static void default_terminal_info (char *, int);
52 static int default_watchpoint_addr_within_range (struct target_ops
*,
53 CORE_ADDR
, CORE_ADDR
, int);
55 static int default_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
57 static int nosymbol (char *, CORE_ADDR
*);
59 static void tcomplain (void) ATTRIBUTE_NORETURN
;
61 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
63 static int return_zero (void);
65 static int return_one (void);
67 static int return_minus_one (void);
69 void target_ignore (void);
71 static void target_command (char *, int);
73 static struct target_ops
*find_default_run_target (char *);
75 static LONGEST
default_xfer_partial (struct target_ops
*ops
,
76 enum target_object object
,
77 const char *annex
, gdb_byte
*readbuf
,
78 const gdb_byte
*writebuf
,
79 ULONGEST offset
, LONGEST len
);
81 static LONGEST
current_xfer_partial (struct target_ops
*ops
,
82 enum target_object object
,
83 const char *annex
, gdb_byte
*readbuf
,
84 const gdb_byte
*writebuf
,
85 ULONGEST offset
, LONGEST len
);
87 static LONGEST
target_xfer_partial (struct target_ops
*ops
,
88 enum target_object object
,
90 void *readbuf
, const void *writebuf
,
91 ULONGEST offset
, LONGEST len
);
93 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
96 static void init_dummy_target (void);
98 static struct target_ops debug_target
;
100 static void debug_to_open (char *, int);
102 static void debug_to_prepare_to_store (struct regcache
*);
104 static void debug_to_files_info (struct target_ops
*);
106 static int debug_to_insert_breakpoint (struct gdbarch
*,
107 struct bp_target_info
*);
109 static int debug_to_remove_breakpoint (struct gdbarch
*,
110 struct bp_target_info
*);
112 static int debug_to_can_use_hw_breakpoint (int, int, int);
114 static int debug_to_insert_hw_breakpoint (struct gdbarch
*,
115 struct bp_target_info
*);
117 static int debug_to_remove_hw_breakpoint (struct gdbarch
*,
118 struct bp_target_info
*);
120 static int debug_to_insert_watchpoint (CORE_ADDR
, int, int);
122 static int debug_to_remove_watchpoint (CORE_ADDR
, int, int);
124 static int debug_to_stopped_by_watchpoint (void);
126 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
128 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
129 CORE_ADDR
, CORE_ADDR
, int);
131 static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
133 static void debug_to_terminal_init (void);
135 static void debug_to_terminal_inferior (void);
137 static void debug_to_terminal_ours_for_output (void);
139 static void debug_to_terminal_save_ours (void);
141 static void debug_to_terminal_ours (void);
143 static void debug_to_terminal_info (char *, int);
145 static void debug_to_load (char *, int);
147 static int debug_to_lookup_symbol (char *, CORE_ADDR
*);
149 static int debug_to_can_run (void);
151 static void debug_to_notice_signals (ptid_t
);
153 static void debug_to_stop (ptid_t
);
155 /* NOTE: cagney/2004-09-29: Many targets reference this variable in
156 wierd and mysterious ways. Putting the variable here lets those
157 wierd and mysterious ways keep building while they are being
158 converted to the inferior inheritance structure. */
159 struct target_ops deprecated_child_ops
;
161 /* Pointer to array of target architecture structures; the size of the
162 array; the current index into the array; the allocated size of the
164 struct target_ops
**target_structs
;
165 unsigned target_struct_size
;
166 unsigned target_struct_index
;
167 unsigned target_struct_allocsize
;
168 #define DEFAULT_ALLOCSIZE 10
170 /* The initial current target, so that there is always a semi-valid
173 static struct target_ops dummy_target
;
175 /* Top of target stack. */
177 static struct target_ops
*target_stack
;
179 /* The target structure we are currently using to talk to a process
180 or file or whatever "inferior" we have. */
182 struct target_ops current_target
;
184 /* Command list for target. */
186 static struct cmd_list_element
*targetlist
= NULL
;
188 /* Nonzero if we should trust readonly sections from the
189 executable when reading memory. */
191 static int trust_readonly
= 0;
193 /* Nonzero if we should show true memory content including
194 memory breakpoint inserted by gdb. */
196 static int show_memory_breakpoints
= 0;
198 /* Non-zero if we want to see trace of target level stuff. */
200 static int targetdebug
= 0;
202 show_targetdebug (struct ui_file
*file
, int from_tty
,
203 struct cmd_list_element
*c
, const char *value
)
205 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
208 static void setup_target_debug (void);
210 /* The option sets this. */
211 static int stack_cache_enabled_p_1
= 1;
212 /* And set_stack_cache_enabled_p updates this.
213 The reason for the separation is so that we don't flush the cache for
214 on->on transitions. */
215 static int stack_cache_enabled_p
= 1;
217 /* This is called *after* the stack-cache has been set.
218 Flush the cache for off->on and on->off transitions.
219 There's no real need to flush the cache for on->off transitions,
220 except cleanliness. */
223 set_stack_cache_enabled_p (char *args
, int from_tty
,
224 struct cmd_list_element
*c
)
226 if (stack_cache_enabled_p
!= stack_cache_enabled_p_1
)
227 target_dcache_invalidate ();
229 stack_cache_enabled_p
= stack_cache_enabled_p_1
;
233 show_stack_cache_enabled_p (struct ui_file
*file
, int from_tty
,
234 struct cmd_list_element
*c
, const char *value
)
236 fprintf_filtered (file
, _("Cache use for stack accesses is %s.\n"), value
);
239 /* Cache of memory operations, to speed up remote access. */
240 static DCACHE
*target_dcache
;
242 /* Invalidate the target dcache. */
245 target_dcache_invalidate (void)
247 dcache_invalidate (target_dcache
);
250 /* The user just typed 'target' without the name of a target. */
253 target_command (char *arg
, int from_tty
)
255 fputs_filtered ("Argument required (target name). Try `help target'\n",
259 /* Default target_has_* methods for process_stratum targets. */
262 default_child_has_all_memory (struct target_ops
*ops
)
264 /* If no inferior selected, then we can't read memory here. */
265 if (ptid_equal (inferior_ptid
, null_ptid
))
272 default_child_has_memory (struct target_ops
*ops
)
274 /* If no inferior selected, then we can't read memory here. */
275 if (ptid_equal (inferior_ptid
, null_ptid
))
282 default_child_has_stack (struct target_ops
*ops
)
284 /* If no inferior selected, there's no stack. */
285 if (ptid_equal (inferior_ptid
, null_ptid
))
292 default_child_has_registers (struct target_ops
*ops
)
294 /* Can't read registers from no inferior. */
295 if (ptid_equal (inferior_ptid
, null_ptid
))
302 default_child_has_execution (struct target_ops
*ops
)
304 /* If there's no thread selected, then we can't make it run through
306 if (ptid_equal (inferior_ptid
, null_ptid
))
314 target_has_all_memory_1 (void)
316 struct target_ops
*t
;
318 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
319 if (t
->to_has_all_memory (t
))
326 target_has_memory_1 (void)
328 struct target_ops
*t
;
330 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
331 if (t
->to_has_memory (t
))
338 target_has_stack_1 (void)
340 struct target_ops
*t
;
342 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
343 if (t
->to_has_stack (t
))
350 target_has_registers_1 (void)
352 struct target_ops
*t
;
354 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
355 if (t
->to_has_registers (t
))
362 target_has_execution_1 (void)
364 struct target_ops
*t
;
366 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
367 if (t
->to_has_execution (t
))
373 /* Add a possible target architecture to the list. */
376 add_target (struct target_ops
*t
)
378 /* Provide default values for all "must have" methods. */
379 if (t
->to_xfer_partial
== NULL
)
380 t
->to_xfer_partial
= default_xfer_partial
;
382 if (t
->to_has_all_memory
== NULL
)
383 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
385 if (t
->to_has_memory
== NULL
)
386 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
388 if (t
->to_has_stack
== NULL
)
389 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
391 if (t
->to_has_registers
== NULL
)
392 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
394 if (t
->to_has_execution
== NULL
)
395 t
->to_has_execution
= (int (*) (struct target_ops
*)) return_zero
;
399 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
400 target_structs
= (struct target_ops
**) xmalloc
401 (target_struct_allocsize
* sizeof (*target_structs
));
403 if (target_struct_size
>= target_struct_allocsize
)
405 target_struct_allocsize
*= 2;
406 target_structs
= (struct target_ops
**)
407 xrealloc ((char *) target_structs
,
408 target_struct_allocsize
* sizeof (*target_structs
));
410 target_structs
[target_struct_size
++] = t
;
412 if (targetlist
== NULL
)
413 add_prefix_cmd ("target", class_run
, target_command
, _("\
414 Connect to a target machine or process.\n\
415 The first argument is the type or protocol of the target machine.\n\
416 Remaining arguments are interpreted by the target protocol. For more\n\
417 information on the arguments for a particular protocol, type\n\
418 `help target ' followed by the protocol name."),
419 &targetlist
, "target ", 0, &cmdlist
);
420 add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
433 struct target_ops
*t
;
435 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
436 if (t
->to_kill
!= NULL
)
439 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
449 target_load (char *arg
, int from_tty
)
451 target_dcache_invalidate ();
452 (*current_target
.to_load
) (arg
, from_tty
);
456 target_create_inferior (char *exec_file
, char *args
,
457 char **env
, int from_tty
)
459 struct target_ops
*t
;
461 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
463 if (t
->to_create_inferior
!= NULL
)
465 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
467 fprintf_unfiltered (gdb_stdlog
,
468 "target_create_inferior (%s, %s, xxx, %d)\n",
469 exec_file
, args
, from_tty
);
474 internal_error (__FILE__
, __LINE__
,
475 "could not find a target to create inferior");
479 target_terminal_inferior (void)
481 /* A background resume (``run&'') should leave GDB in control of the
482 terminal. Use target_can_async_p, not target_is_async_p, since at
483 this point the target is not async yet. However, if sync_execution
484 is not set, we know it will become async prior to resume. */
485 if (target_can_async_p () && !sync_execution
)
488 /* If GDB is resuming the inferior in the foreground, install
489 inferior's terminal modes. */
490 (*current_target
.to_terminal_inferior
) ();
494 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
495 struct target_ops
*t
)
497 errno
= EIO
; /* Can't read/write this location */
498 return 0; /* No bytes handled */
504 error (_("You can't do that when your target is `%s'"),
505 current_target
.to_shortname
);
511 error (_("You can't do that without a process to debug."));
515 nosymbol (char *name
, CORE_ADDR
*addrp
)
517 return 1; /* Symbol does not exist in target env */
521 default_terminal_info (char *args
, int from_tty
)
523 printf_unfiltered (_("No saved terminal information.\n"));
526 /* A default implementation for the to_get_ada_task_ptid target method.
528 This function builds the PTID by using both LWP and TID as part of
529 the PTID lwp and tid elements. The pid used is the pid of the
533 default_get_ada_task_ptid (long lwp
, long tid
)
535 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
538 /* Go through the target stack from top to bottom, copying over zero
539 entries in current_target, then filling in still empty entries. In
540 effect, we are doing class inheritance through the pushed target
543 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
544 is currently implemented, is that it discards any knowledge of
545 which target an inherited method originally belonged to.
546 Consequently, new new target methods should instead explicitly and
547 locally search the target stack for the target that can handle the
551 update_current_target (void)
553 struct target_ops
*t
;
555 /* First, reset current's contents. */
556 memset (¤t_target
, 0, sizeof (current_target
));
558 #define INHERIT(FIELD, TARGET) \
559 if (!current_target.FIELD) \
560 current_target.FIELD = (TARGET)->FIELD
562 for (t
= target_stack
; t
; t
= t
->beneath
)
564 INHERIT (to_shortname
, t
);
565 INHERIT (to_longname
, t
);
567 /* Do not inherit to_open. */
568 /* Do not inherit to_close. */
569 /* Do not inherit to_attach. */
570 INHERIT (to_post_attach
, t
);
571 INHERIT (to_attach_no_wait
, t
);
572 /* Do not inherit to_detach. */
573 /* Do not inherit to_disconnect. */
574 /* Do not inherit to_resume. */
575 /* Do not inherit to_wait. */
576 /* Do not inherit to_fetch_registers. */
577 /* Do not inherit to_store_registers. */
578 INHERIT (to_prepare_to_store
, t
);
579 INHERIT (deprecated_xfer_memory
, t
);
580 INHERIT (to_files_info
, t
);
581 INHERIT (to_insert_breakpoint
, t
);
582 INHERIT (to_remove_breakpoint
, t
);
583 INHERIT (to_can_use_hw_breakpoint
, t
);
584 INHERIT (to_insert_hw_breakpoint
, t
);
585 INHERIT (to_remove_hw_breakpoint
, t
);
586 INHERIT (to_insert_watchpoint
, t
);
587 INHERIT (to_remove_watchpoint
, t
);
588 INHERIT (to_stopped_data_address
, t
);
589 INHERIT (to_have_steppable_watchpoint
, t
);
590 INHERIT (to_have_continuable_watchpoint
, t
);
591 INHERIT (to_stopped_by_watchpoint
, t
);
592 INHERIT (to_watchpoint_addr_within_range
, t
);
593 INHERIT (to_region_ok_for_hw_watchpoint
, t
);
594 INHERIT (to_terminal_init
, t
);
595 INHERIT (to_terminal_inferior
, t
);
596 INHERIT (to_terminal_ours_for_output
, t
);
597 INHERIT (to_terminal_ours
, t
);
598 INHERIT (to_terminal_save_ours
, t
);
599 INHERIT (to_terminal_info
, t
);
600 /* Do not inherit to_kill. */
601 INHERIT (to_load
, t
);
602 INHERIT (to_lookup_symbol
, t
);
603 /* Do no inherit to_create_inferior. */
604 INHERIT (to_post_startup_inferior
, t
);
605 INHERIT (to_acknowledge_created_inferior
, t
);
606 INHERIT (to_insert_fork_catchpoint
, t
);
607 INHERIT (to_remove_fork_catchpoint
, t
);
608 INHERIT (to_insert_vfork_catchpoint
, t
);
609 INHERIT (to_remove_vfork_catchpoint
, t
);
610 /* Do not inherit to_follow_fork. */
611 INHERIT (to_insert_exec_catchpoint
, t
);
612 INHERIT (to_remove_exec_catchpoint
, t
);
613 INHERIT (to_set_syscall_catchpoint
, t
);
614 INHERIT (to_has_exited
, t
);
615 /* Do not inherit to_mourn_inferiour. */
616 INHERIT (to_can_run
, t
);
617 INHERIT (to_notice_signals
, t
);
618 /* Do not inherit to_thread_alive. */
619 /* Do not inherit to_find_new_threads. */
620 /* Do not inherit to_pid_to_str. */
621 INHERIT (to_extra_thread_info
, t
);
622 INHERIT (to_stop
, t
);
623 /* Do not inherit to_xfer_partial. */
624 INHERIT (to_rcmd
, t
);
625 INHERIT (to_pid_to_exec_file
, t
);
626 INHERIT (to_log_command
, t
);
627 INHERIT (to_stratum
, t
);
628 /* Do not inherit to_has_all_memory */
629 /* Do not inherit to_has_memory */
630 /* Do not inherit to_has_stack */
631 /* Do not inherit to_has_registers */
632 /* Do not inherit to_has_execution */
633 INHERIT (to_has_thread_control
, t
);
634 INHERIT (to_can_async_p
, t
);
635 INHERIT (to_is_async_p
, t
);
636 INHERIT (to_async
, t
);
637 INHERIT (to_async_mask
, t
);
638 INHERIT (to_find_memory_regions
, t
);
639 INHERIT (to_make_corefile_notes
, t
);
640 INHERIT (to_get_bookmark
, t
);
641 INHERIT (to_goto_bookmark
, t
);
642 /* Do not inherit to_get_thread_local_address. */
643 INHERIT (to_can_execute_reverse
, t
);
644 INHERIT (to_thread_architecture
, t
);
645 /* Do not inherit to_read_description. */
646 INHERIT (to_get_ada_task_ptid
, t
);
647 /* Do not inherit to_search_memory. */
648 INHERIT (to_supports_multi_process
, t
);
649 INHERIT (to_trace_init
, t
);
650 INHERIT (to_download_tracepoint
, t
);
651 INHERIT (to_download_trace_state_variable
, t
);
652 INHERIT (to_trace_set_readonly_regions
, t
);
653 INHERIT (to_trace_start
, t
);
654 INHERIT (to_get_trace_status
, t
);
655 INHERIT (to_trace_stop
, t
);
656 INHERIT (to_trace_find
, t
);
657 INHERIT (to_get_trace_state_variable_value
, t
);
658 INHERIT (to_save_trace_data
, t
);
659 INHERIT (to_upload_tracepoints
, t
);
660 INHERIT (to_upload_trace_state_variables
, t
);
661 INHERIT (to_get_raw_trace_data
, t
);
662 INHERIT (to_set_disconnected_tracing
, t
);
663 INHERIT (to_set_circular_trace_buffer
, t
);
664 INHERIT (to_get_tib_address
, t
);
665 INHERIT (to_magic
, t
);
666 /* Do not inherit to_memory_map. */
667 /* Do not inherit to_flash_erase. */
668 /* Do not inherit to_flash_done. */
672 /* Clean up a target struct so it no longer has any zero pointers in
673 it. Some entries are defaulted to a method that print an error,
674 others are hard-wired to a standard recursive default. */
676 #define de_fault(field, value) \
677 if (!current_target.field) \
678 current_target.field = value
681 (void (*) (char *, int))
686 de_fault (to_post_attach
,
689 de_fault (to_prepare_to_store
,
690 (void (*) (struct regcache
*))
692 de_fault (deprecated_xfer_memory
,
693 (int (*) (CORE_ADDR
, gdb_byte
*, int, int, struct mem_attrib
*, struct target_ops
*))
695 de_fault (to_files_info
,
696 (void (*) (struct target_ops
*))
698 de_fault (to_insert_breakpoint
,
699 memory_insert_breakpoint
);
700 de_fault (to_remove_breakpoint
,
701 memory_remove_breakpoint
);
702 de_fault (to_can_use_hw_breakpoint
,
703 (int (*) (int, int, int))
705 de_fault (to_insert_hw_breakpoint
,
706 (int (*) (struct gdbarch
*, struct bp_target_info
*))
708 de_fault (to_remove_hw_breakpoint
,
709 (int (*) (struct gdbarch
*, struct bp_target_info
*))
711 de_fault (to_insert_watchpoint
,
712 (int (*) (CORE_ADDR
, int, int))
714 de_fault (to_remove_watchpoint
,
715 (int (*) (CORE_ADDR
, int, int))
717 de_fault (to_stopped_by_watchpoint
,
720 de_fault (to_stopped_data_address
,
721 (int (*) (struct target_ops
*, CORE_ADDR
*))
723 de_fault (to_watchpoint_addr_within_range
,
724 default_watchpoint_addr_within_range
);
725 de_fault (to_region_ok_for_hw_watchpoint
,
726 default_region_ok_for_hw_watchpoint
);
727 de_fault (to_terminal_init
,
730 de_fault (to_terminal_inferior
,
733 de_fault (to_terminal_ours_for_output
,
736 de_fault (to_terminal_ours
,
739 de_fault (to_terminal_save_ours
,
742 de_fault (to_terminal_info
,
743 default_terminal_info
);
745 (void (*) (char *, int))
747 de_fault (to_lookup_symbol
,
748 (int (*) (char *, CORE_ADDR
*))
750 de_fault (to_post_startup_inferior
,
753 de_fault (to_acknowledge_created_inferior
,
756 de_fault (to_insert_fork_catchpoint
,
759 de_fault (to_remove_fork_catchpoint
,
762 de_fault (to_insert_vfork_catchpoint
,
765 de_fault (to_remove_vfork_catchpoint
,
768 de_fault (to_insert_exec_catchpoint
,
771 de_fault (to_remove_exec_catchpoint
,
774 de_fault (to_set_syscall_catchpoint
,
775 (int (*) (int, int, int, int, int *))
777 de_fault (to_has_exited
,
778 (int (*) (int, int, int *))
780 de_fault (to_can_run
,
782 de_fault (to_notice_signals
,
785 de_fault (to_extra_thread_info
,
786 (char *(*) (struct thread_info
*))
791 current_target
.to_xfer_partial
= current_xfer_partial
;
793 (void (*) (char *, struct ui_file
*))
795 de_fault (to_pid_to_exec_file
,
799 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
801 de_fault (to_async_mask
,
804 de_fault (to_thread_architecture
,
805 default_thread_architecture
);
806 current_target
.to_read_description
= NULL
;
807 de_fault (to_get_ada_task_ptid
,
808 (ptid_t (*) (long, long))
809 default_get_ada_task_ptid
);
810 de_fault (to_supports_multi_process
,
813 de_fault (to_trace_init
,
816 de_fault (to_download_tracepoint
,
817 (void (*) (struct breakpoint
*))
819 de_fault (to_download_trace_state_variable
,
820 (void (*) (struct trace_state_variable
*))
822 de_fault (to_trace_set_readonly_regions
,
825 de_fault (to_trace_start
,
828 de_fault (to_get_trace_status
,
829 (int (*) (struct trace_status
*))
831 de_fault (to_trace_stop
,
834 de_fault (to_trace_find
,
835 (int (*) (enum trace_find_type
, int, ULONGEST
, ULONGEST
, int *))
837 de_fault (to_get_trace_state_variable_value
,
838 (int (*) (int, LONGEST
*))
840 de_fault (to_save_trace_data
,
841 (int (*) (const char *))
843 de_fault (to_upload_tracepoints
,
844 (int (*) (struct uploaded_tp
**))
846 de_fault (to_upload_trace_state_variables
,
847 (int (*) (struct uploaded_tsv
**))
849 de_fault (to_get_raw_trace_data
,
850 (LONGEST (*) (gdb_byte
*, ULONGEST
, LONGEST
))
852 de_fault (to_set_disconnected_tracing
,
855 de_fault (to_set_circular_trace_buffer
,
858 de_fault (to_get_tib_address
,
859 (int (*) (ptid_t
, CORE_ADDR
*))
863 /* Finally, position the target-stack beneath the squashed
864 "current_target". That way code looking for a non-inherited
865 target method can quickly and simply find it. */
866 current_target
.beneath
= target_stack
;
869 setup_target_debug ();
872 /* Push a new target type into the stack of the existing target accessors,
873 possibly superseding some of the existing accessors.
875 Result is zero if the pushed target ended up on top of the stack,
876 nonzero if at least one target is on top of it.
878 Rather than allow an empty stack, we always have the dummy target at
879 the bottom stratum, so we can call the function vectors without
883 push_target (struct target_ops
*t
)
885 struct target_ops
**cur
;
887 /* Check magic number. If wrong, it probably means someone changed
888 the struct definition, but not all the places that initialize one. */
889 if (t
->to_magic
!= OPS_MAGIC
)
891 fprintf_unfiltered (gdb_stderr
,
892 "Magic number of %s target struct wrong\n",
894 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
897 /* Find the proper stratum to install this target in. */
898 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
900 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
904 /* If there's already targets at this stratum, remove them. */
905 /* FIXME: cagney/2003-10-15: I think this should be popping all
906 targets to CUR, and not just those at this stratum level. */
907 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
909 /* There's already something at this stratum level. Close it,
910 and un-hook it from the stack. */
911 struct target_ops
*tmp
= (*cur
);
913 (*cur
) = (*cur
)->beneath
;
915 target_close (tmp
, 0);
918 /* We have removed all targets in our stratum, now add the new one. */
922 update_current_target ();
925 return (t
!= target_stack
);
928 /* Remove a target_ops vector from the stack, wherever it may be.
929 Return how many times it was removed (0 or 1). */
932 unpush_target (struct target_ops
*t
)
934 struct target_ops
**cur
;
935 struct target_ops
*tmp
;
937 if (t
->to_stratum
== dummy_stratum
)
938 internal_error (__FILE__
, __LINE__
,
939 "Attempt to unpush the dummy target");
941 /* Look for the specified target. Note that we assume that a target
942 can only occur once in the target stack. */
944 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
951 return 0; /* Didn't find target_ops, quit now */
953 /* NOTE: cagney/2003-12-06: In '94 the close call was made
954 unconditional by moving it to before the above check that the
955 target was in the target stack (something about "Change the way
956 pushing and popping of targets work to support target overlays
957 and inheritance"). This doesn't make much sense - only open
958 targets should be closed. */
961 /* Unchain the target */
963 (*cur
) = (*cur
)->beneath
;
966 update_current_target ();
974 target_close (target_stack
, 0); /* Let it clean up */
975 if (unpush_target (target_stack
) == 1)
978 fprintf_unfiltered (gdb_stderr
,
979 "pop_target couldn't find target %s\n",
980 current_target
.to_shortname
);
981 internal_error (__FILE__
, __LINE__
,
982 _("failed internal consistency check"));
986 pop_all_targets_above (enum strata above_stratum
, int quitting
)
988 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
990 target_close (target_stack
, quitting
);
991 if (!unpush_target (target_stack
))
993 fprintf_unfiltered (gdb_stderr
,
994 "pop_all_targets couldn't find target %s\n",
995 target_stack
->to_shortname
);
996 internal_error (__FILE__
, __LINE__
,
997 _("failed internal consistency check"));
1004 pop_all_targets (int quitting
)
1006 pop_all_targets_above (dummy_stratum
, quitting
);
1009 /* Using the objfile specified in OBJFILE, find the address for the
1010 current thread's thread-local storage with offset OFFSET. */
1012 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1014 volatile CORE_ADDR addr
= 0;
1015 struct target_ops
*target
;
1017 for (target
= current_target
.beneath
;
1019 target
= target
->beneath
)
1021 if (target
->to_get_thread_local_address
!= NULL
)
1026 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch
))
1028 ptid_t ptid
= inferior_ptid
;
1029 volatile struct gdb_exception ex
;
1031 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1035 /* Fetch the load module address for this objfile. */
1036 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch
,
1038 /* If it's 0, throw the appropriate exception. */
1040 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1041 _("TLS load module not found"));
1043 addr
= target
->to_get_thread_local_address (target
, ptid
, lm_addr
, offset
);
1045 /* If an error occurred, print TLS related messages here. Otherwise,
1046 throw the error to some higher catcher. */
1049 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1053 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1054 error (_("Cannot find thread-local variables in this thread library."));
1056 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1057 if (objfile_is_library
)
1058 error (_("Cannot find shared library `%s' in dynamic"
1059 " linker's load module list"), objfile
->name
);
1061 error (_("Cannot find executable file `%s' in dynamic"
1062 " linker's load module list"), objfile
->name
);
1064 case TLS_NOT_ALLOCATED_YET_ERROR
:
1065 if (objfile_is_library
)
1066 error (_("The inferior has not yet allocated storage for"
1067 " thread-local variables in\n"
1068 "the shared library `%s'\n"
1070 objfile
->name
, target_pid_to_str (ptid
));
1072 error (_("The inferior has not yet allocated storage for"
1073 " thread-local variables in\n"
1074 "the executable `%s'\n"
1076 objfile
->name
, target_pid_to_str (ptid
));
1078 case TLS_GENERIC_ERROR
:
1079 if (objfile_is_library
)
1080 error (_("Cannot find thread-local storage for %s, "
1081 "shared library %s:\n%s"),
1082 target_pid_to_str (ptid
),
1083 objfile
->name
, ex
.message
);
1085 error (_("Cannot find thread-local storage for %s, "
1086 "executable file %s:\n%s"),
1087 target_pid_to_str (ptid
),
1088 objfile
->name
, ex
.message
);
1091 throw_exception (ex
);
1096 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1097 TLS is an ABI-specific thing. But we don't do that yet. */
1099 error (_("Cannot find thread-local variables on this target"));
1105 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1107 /* target_read_string -- read a null terminated string, up to LEN bytes,
1108 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1109 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1110 is responsible for freeing it. Return the number of bytes successfully
1114 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1116 int tlen
, origlen
, offset
, i
;
1120 int buffer_allocated
;
1122 unsigned int nbytes_read
= 0;
1124 gdb_assert (string
);
1126 /* Small for testing. */
1127 buffer_allocated
= 4;
1128 buffer
= xmalloc (buffer_allocated
);
1135 tlen
= MIN (len
, 4 - (memaddr
& 3));
1136 offset
= memaddr
& 3;
1138 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1141 /* The transfer request might have crossed the boundary to an
1142 unallocated region of memory. Retry the transfer, requesting
1146 errcode
= target_read_memory (memaddr
, buf
, 1);
1151 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1155 bytes
= bufptr
- buffer
;
1156 buffer_allocated
*= 2;
1157 buffer
= xrealloc (buffer
, buffer_allocated
);
1158 bufptr
= buffer
+ bytes
;
1161 for (i
= 0; i
< tlen
; i
++)
1163 *bufptr
++ = buf
[i
+ offset
];
1164 if (buf
[i
+ offset
] == '\000')
1166 nbytes_read
+= i
+ 1;
1173 nbytes_read
+= tlen
;
1182 struct target_section_table
*
1183 target_get_section_table (struct target_ops
*target
)
1185 struct target_ops
*t
;
1188 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1190 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1191 if (t
->to_get_section_table
!= NULL
)
1192 return (*t
->to_get_section_table
) (t
);
1197 /* Find a section containing ADDR. */
1199 struct target_section
*
1200 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1202 struct target_section_table
*table
= target_get_section_table (target
);
1203 struct target_section
*secp
;
1208 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1210 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1216 /* Perform a partial memory transfer.
1217 For docs see target.h, to_xfer_partial. */
1220 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1221 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1226 struct mem_region
*region
;
1227 struct inferior
*inf
;
1229 /* Zero length requests are ok and require no work. */
1233 /* For accesses to unmapped overlay sections, read directly from
1234 files. Must do this first, as MEMADDR may need adjustment. */
1235 if (readbuf
!= NULL
&& overlay_debugging
)
1237 struct obj_section
*section
= find_pc_overlay (memaddr
);
1239 if (pc_in_unmapped_range (memaddr
, section
))
1241 struct target_section_table
*table
1242 = target_get_section_table (ops
);
1243 const char *section_name
= section
->the_bfd_section
->name
;
1245 memaddr
= overlay_mapped_address (memaddr
, section
);
1246 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1249 table
->sections_end
,
1254 /* Try the executable files, if "trust-readonly-sections" is set. */
1255 if (readbuf
!= NULL
&& trust_readonly
)
1257 struct target_section
*secp
;
1258 struct target_section_table
*table
;
1260 secp
= target_section_by_addr (ops
, memaddr
);
1262 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1265 table
= target_get_section_table (ops
);
1266 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1269 table
->sections_end
,
1274 /* Try GDB's internal data cache. */
1275 region
= lookup_mem_region (memaddr
);
1276 /* region->hi == 0 means there's no upper bound. */
1277 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1280 reg_len
= region
->hi
- memaddr
;
1282 switch (region
->attrib
.mode
)
1285 if (writebuf
!= NULL
)
1290 if (readbuf
!= NULL
)
1295 /* We only support writing to flash during "load" for now. */
1296 if (writebuf
!= NULL
)
1297 error (_("Writing to flash memory forbidden in this context"));
1304 if (!ptid_equal (inferior_ptid
, null_ptid
))
1305 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1310 /* The dcache reads whole cache lines; that doesn't play well
1311 with reading from a trace buffer, because reading outside of
1312 the collected memory range fails. */
1313 && get_traceframe_number () == -1
1314 && (region
->attrib
.cache
1315 || (stack_cache_enabled_p
&& object
== TARGET_OBJECT_STACK_MEMORY
)))
1317 if (readbuf
!= NULL
)
1318 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
, readbuf
,
1321 /* FIXME drow/2006-08-09: If we're going to preserve const
1322 correctness dcache_xfer_memory should take readbuf and
1324 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
,
1331 if (readbuf
&& !show_memory_breakpoints
)
1332 breakpoint_restore_shadows (readbuf
, memaddr
, reg_len
);
1337 /* If none of those methods found the memory we wanted, fall back
1338 to a target partial transfer. Normally a single call to
1339 to_xfer_partial is enough; if it doesn't recognize an object
1340 it will call the to_xfer_partial of the next target down.
1341 But for memory this won't do. Memory is the only target
1342 object which can be read from more than one valid target.
1343 A core file, for instance, could have some of memory but
1344 delegate other bits to the target below it. So, we must
1345 manually try all targets. */
1349 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1350 readbuf
, writebuf
, memaddr
, reg_len
);
1354 /* We want to continue past core files to executables, but not
1355 past a running target's memory. */
1356 if (ops
->to_has_all_memory (ops
))
1361 while (ops
!= NULL
);
1363 if (readbuf
&& !show_memory_breakpoints
)
1364 breakpoint_restore_shadows (readbuf
, memaddr
, reg_len
);
1366 /* Make sure the cache gets updated no matter what - if we are writing
1367 to the stack. Even if this write is not tagged as such, we still need
1368 to update the cache. */
1373 && !region
->attrib
.cache
1374 && stack_cache_enabled_p
1375 && object
!= TARGET_OBJECT_STACK_MEMORY
)
1377 dcache_update (target_dcache
, memaddr
, (void *) writebuf
, res
);
1380 /* If we still haven't got anything, return the last error. We
1386 restore_show_memory_breakpoints (void *arg
)
1388 show_memory_breakpoints
= (uintptr_t) arg
;
1392 make_show_memory_breakpoints_cleanup (int show
)
1394 int current
= show_memory_breakpoints
;
1396 show_memory_breakpoints
= show
;
1397 return make_cleanup (restore_show_memory_breakpoints
,
1398 (void *) (uintptr_t) current
);
1401 /* For docs see target.h, to_xfer_partial. */
1404 target_xfer_partial (struct target_ops
*ops
,
1405 enum target_object object
, const char *annex
,
1406 void *readbuf
, const void *writebuf
,
1407 ULONGEST offset
, LONGEST len
)
1411 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1413 /* If this is a memory transfer, let the memory-specific code
1414 have a look at it instead. Memory transfers are more
1416 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
)
1417 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1418 writebuf
, offset
, len
);
1421 enum target_object raw_object
= object
;
1423 /* If this is a raw memory transfer, request the normal
1424 memory object from other layers. */
1425 if (raw_object
== TARGET_OBJECT_RAW_MEMORY
)
1426 raw_object
= TARGET_OBJECT_MEMORY
;
1428 retval
= ops
->to_xfer_partial (ops
, raw_object
, annex
, readbuf
,
1429 writebuf
, offset
, len
);
1434 const unsigned char *myaddr
= NULL
;
1436 fprintf_unfiltered (gdb_stdlog
,
1437 "%s:target_xfer_partial (%d, %s, %s, %s, %s, %s) = %s",
1440 (annex
? annex
: "(null)"),
1441 host_address_to_string (readbuf
),
1442 host_address_to_string (writebuf
),
1443 core_addr_to_string_nz (offset
),
1444 plongest (len
), plongest (retval
));
1450 if (retval
> 0 && myaddr
!= NULL
)
1454 fputs_unfiltered (", bytes =", gdb_stdlog
);
1455 for (i
= 0; i
< retval
; i
++)
1457 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1459 if (targetdebug
< 2 && i
> 0)
1461 fprintf_unfiltered (gdb_stdlog
, " ...");
1464 fprintf_unfiltered (gdb_stdlog
, "\n");
1467 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1471 fputc_unfiltered ('\n', gdb_stdlog
);
1476 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
1477 GDB's memory at MYADDR. Returns either 0 for success or an errno value
1478 if any error occurs.
1480 If an error occurs, no guarantee is made about the contents of the data at
1481 MYADDR. In particular, the caller should not depend upon partial reads
1482 filling the buffer with good data. There is no way for the caller to know
1483 how much good data might have been transfered anyway. Callers that can
1484 deal with partial reads should call target_read (which will retry until
1485 it makes no progress, and then return how much was transferred). */
1488 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
1490 /* Dispatch to the topmost target, not the flattened current_target.
1491 Memory accesses check target->to_has_(all_)memory, and the
1492 flattened target doesn't inherit those. */
1493 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1494 myaddr
, memaddr
, len
) == len
)
1500 /* Like target_read_memory, but specify explicitly that this is a read from
1501 the target's stack. This may trigger different cache behavior. */
1504 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
1506 /* Dispatch to the topmost target, not the flattened current_target.
1507 Memory accesses check target->to_has_(all_)memory, and the
1508 flattened target doesn't inherit those. */
1510 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1511 myaddr
, memaddr
, len
) == len
)
1517 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1518 Returns either 0 for success or an errno value if any error occurs.
1519 If an error occurs, no guarantee is made about how much data got written.
1520 Callers that can deal with partial writes should call target_write. */
1523 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
1525 /* Dispatch to the topmost target, not the flattened current_target.
1526 Memory accesses check target->to_has_(all_)memory, and the
1527 flattened target doesn't inherit those. */
1528 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1529 myaddr
, memaddr
, len
) == len
)
1535 /* Fetch the target's memory map. */
1538 target_memory_map (void)
1540 VEC(mem_region_s
) *result
;
1541 struct mem_region
*last_one
, *this_one
;
1543 struct target_ops
*t
;
1546 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1548 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1549 if (t
->to_memory_map
!= NULL
)
1555 result
= t
->to_memory_map (t
);
1559 qsort (VEC_address (mem_region_s
, result
),
1560 VEC_length (mem_region_s
, result
),
1561 sizeof (struct mem_region
), mem_region_cmp
);
1563 /* Check that regions do not overlap. Simultaneously assign
1564 a numbering for the "mem" commands to use to refer to
1567 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1569 this_one
->number
= ix
;
1571 if (last_one
&& last_one
->hi
> this_one
->lo
)
1573 warning (_("Overlapping regions in memory map: ignoring"));
1574 VEC_free (mem_region_s
, result
);
1577 last_one
= this_one
;
1584 target_flash_erase (ULONGEST address
, LONGEST length
)
1586 struct target_ops
*t
;
1588 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1589 if (t
->to_flash_erase
!= NULL
)
1592 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1593 hex_string (address
), phex (length
, 0));
1594 t
->to_flash_erase (t
, address
, length
);
1602 target_flash_done (void)
1604 struct target_ops
*t
;
1606 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1607 if (t
->to_flash_done
!= NULL
)
1610 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1611 t
->to_flash_done (t
);
1619 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1620 struct cmd_list_element
*c
, const char *value
)
1622 fprintf_filtered (file
, _("\
1623 Mode for reading from readonly sections is %s.\n"),
1627 /* More generic transfers. */
1630 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1631 const char *annex
, gdb_byte
*readbuf
,
1632 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1634 if (object
== TARGET_OBJECT_MEMORY
1635 && ops
->deprecated_xfer_memory
!= NULL
)
1636 /* If available, fall back to the target's
1637 "deprecated_xfer_memory" method. */
1642 if (writebuf
!= NULL
)
1644 void *buffer
= xmalloc (len
);
1645 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1647 memcpy (buffer
, writebuf
, len
);
1648 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1649 1/*write*/, NULL
, ops
);
1650 do_cleanups (cleanup
);
1652 if (readbuf
!= NULL
)
1653 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1654 0/*read*/, NULL
, ops
);
1657 else if (xfered
== 0 && errno
== 0)
1658 /* "deprecated_xfer_memory" uses 0, cross checked against
1659 ERRNO as one indication of an error. */
1664 else if (ops
->beneath
!= NULL
)
1665 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1666 readbuf
, writebuf
, offset
, len
);
1671 /* The xfer_partial handler for the topmost target. Unlike the default,
1672 it does not need to handle memory specially; it just passes all
1673 requests down the stack. */
1676 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1677 const char *annex
, gdb_byte
*readbuf
,
1678 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1680 if (ops
->beneath
!= NULL
)
1681 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1682 readbuf
, writebuf
, offset
, len
);
1687 /* Target vector read/write partial wrapper functions. */
1690 target_read_partial (struct target_ops
*ops
,
1691 enum target_object object
,
1692 const char *annex
, gdb_byte
*buf
,
1693 ULONGEST offset
, LONGEST len
)
1695 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
1699 target_write_partial (struct target_ops
*ops
,
1700 enum target_object object
,
1701 const char *annex
, const gdb_byte
*buf
,
1702 ULONGEST offset
, LONGEST len
)
1704 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
1707 /* Wrappers to perform the full transfer. */
1709 /* For docs on target_read see target.h. */
1712 target_read (struct target_ops
*ops
,
1713 enum target_object object
,
1714 const char *annex
, gdb_byte
*buf
,
1715 ULONGEST offset
, LONGEST len
)
1719 while (xfered
< len
)
1721 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
1722 (gdb_byte
*) buf
+ xfered
,
1723 offset
+ xfered
, len
- xfered
);
1725 /* Call an observer, notifying them of the xfer progress? */
1737 target_read_until_error (struct target_ops
*ops
,
1738 enum target_object object
,
1739 const char *annex
, gdb_byte
*buf
,
1740 ULONGEST offset
, LONGEST len
)
1744 while (xfered
< len
)
1746 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
1747 (gdb_byte
*) buf
+ xfered
,
1748 offset
+ xfered
, len
- xfered
);
1750 /* Call an observer, notifying them of the xfer progress? */
1755 /* We've got an error. Try to read in smaller blocks. */
1756 ULONGEST start
= offset
+ xfered
;
1757 ULONGEST remaining
= len
- xfered
;
1760 /* If an attempt was made to read a random memory address,
1761 it's likely that the very first byte is not accessible.
1762 Try reading the first byte, to avoid doing log N tries
1764 xfer
= target_read_partial (ops
, object
, annex
,
1765 (gdb_byte
*) buf
+ xfered
, start
, 1);
1774 xfer
= target_read_partial (ops
, object
, annex
,
1775 (gdb_byte
*) buf
+ xfered
,
1785 /* We have successfully read the first half. So, the
1786 error must be in the second half. Adjust start and
1787 remaining to point at the second half. */
1803 /* An alternative to target_write with progress callbacks. */
1806 target_write_with_progress (struct target_ops
*ops
,
1807 enum target_object object
,
1808 const char *annex
, const gdb_byte
*buf
,
1809 ULONGEST offset
, LONGEST len
,
1810 void (*progress
) (ULONGEST
, void *), void *baton
)
1814 /* Give the progress callback a chance to set up. */
1816 (*progress
) (0, baton
);
1818 while (xfered
< len
)
1820 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
1821 (gdb_byte
*) buf
+ xfered
,
1822 offset
+ xfered
, len
- xfered
);
1830 (*progress
) (xfer
, baton
);
1838 /* For docs on target_write see target.h. */
1841 target_write (struct target_ops
*ops
,
1842 enum target_object object
,
1843 const char *annex
, const gdb_byte
*buf
,
1844 ULONGEST offset
, LONGEST len
)
1846 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
1850 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
1851 the size of the transferred data. PADDING additional bytes are
1852 available in *BUF_P. This is a helper function for
1853 target_read_alloc; see the declaration of that function for more
1857 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
1858 const char *annex
, gdb_byte
**buf_p
, int padding
)
1860 size_t buf_alloc
, buf_pos
;
1864 /* This function does not have a length parameter; it reads the
1865 entire OBJECT). Also, it doesn't support objects fetched partly
1866 from one target and partly from another (in a different stratum,
1867 e.g. a core file and an executable). Both reasons make it
1868 unsuitable for reading memory. */
1869 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
1871 /* Start by reading up to 4K at a time. The target will throttle
1872 this number down if necessary. */
1874 buf
= xmalloc (buf_alloc
);
1878 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
1879 buf_pos
, buf_alloc
- buf_pos
- padding
);
1882 /* An error occurred. */
1888 /* Read all there was. */
1898 /* If the buffer is filling up, expand it. */
1899 if (buf_alloc
< buf_pos
* 2)
1902 buf
= xrealloc (buf
, buf_alloc
);
1909 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
1910 the size of the transferred data. See the declaration in "target.h"
1911 function for more information about the return value. */
1914 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
1915 const char *annex
, gdb_byte
**buf_p
)
1917 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
1920 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
1921 returned as a string, allocated using xmalloc. If an error occurs
1922 or the transfer is unsupported, NULL is returned. Empty objects
1923 are returned as allocated but empty strings. A warning is issued
1924 if the result contains any embedded NUL bytes. */
1927 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
1931 LONGEST transferred
;
1933 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
1935 if (transferred
< 0)
1938 if (transferred
== 0)
1939 return xstrdup ("");
1941 buffer
[transferred
] = 0;
1942 if (strlen (buffer
) < transferred
)
1943 warning (_("target object %d, annex %s, "
1944 "contained unexpected null characters"),
1945 (int) object
, annex
? annex
: "(none)");
1947 return (char *) buffer
;
1950 /* Memory transfer methods. */
1953 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
1956 /* This method is used to read from an alternate, non-current
1957 target. This read must bypass the overlay support (as symbols
1958 don't match this target), and GDB's internal cache (wrong cache
1959 for this target). */
1960 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
1962 memory_error (EIO
, addr
);
1966 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
1967 int len
, enum bfd_endian byte_order
)
1969 gdb_byte buf
[sizeof (ULONGEST
)];
1971 gdb_assert (len
<= sizeof (buf
));
1972 get_target_memory (ops
, addr
, buf
, len
);
1973 return extract_unsigned_integer (buf
, len
, byte_order
);
1977 target_info (char *args
, int from_tty
)
1979 struct target_ops
*t
;
1980 int has_all_mem
= 0;
1982 if (symfile_objfile
!= NULL
)
1983 printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile
->name
);
1985 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
1987 if (!(*t
->to_has_memory
) (t
))
1990 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
1993 printf_unfiltered (_("\tWhile running this, GDB does not access memory from...\n"));
1994 printf_unfiltered ("%s:\n", t
->to_longname
);
1995 (t
->to_files_info
) (t
);
1996 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2000 /* This function is called before any new inferior is created, e.g.
2001 by running a program, attaching, or connecting to a target.
2002 It cleans up any state from previous invocations which might
2003 change between runs. This is a subset of what target_preopen
2004 resets (things which might change between targets). */
2007 target_pre_inferior (int from_tty
)
2009 /* Clear out solib state. Otherwise the solib state of the previous
2010 inferior might have survived and is entirely wrong for the new
2011 target. This has been observed on GNU/Linux using glibc 2.3. How
2023 Cannot access memory at address 0xdeadbeef
2026 /* In some OSs, the shared library list is the same/global/shared
2027 across inferiors. If code is shared between processes, so are
2028 memory regions and features. */
2029 if (!gdbarch_has_global_solist (target_gdbarch
))
2031 no_shared_libraries (NULL
, from_tty
);
2033 invalidate_target_mem_regions ();
2035 target_clear_description ();
2039 /* Callback for iterate_over_inferiors. Gets rid of the given
2043 dispose_inferior (struct inferior
*inf
, void *args
)
2045 struct thread_info
*thread
;
2047 thread
= any_thread_of_process (inf
->pid
);
2050 switch_to_thread (thread
->ptid
);
2052 /* Core inferiors actually should be detached, not killed. */
2053 if (target_has_execution
)
2056 target_detach (NULL
, 0);
2062 /* This is to be called by the open routine before it does
2066 target_preopen (int from_tty
)
2070 if (have_inferiors ())
2073 || !have_live_inferiors ()
2074 || query (_("A program is being debugged already. Kill it? ")))
2075 iterate_over_inferiors (dispose_inferior
, NULL
);
2077 error (_("Program not killed."));
2080 /* Calling target_kill may remove the target from the stack. But if
2081 it doesn't (which seems like a win for UDI), remove it now. */
2082 /* Leave the exec target, though. The user may be switching from a
2083 live process to a core of the same program. */
2084 pop_all_targets_above (file_stratum
, 0);
2086 target_pre_inferior (from_tty
);
2089 /* Detach a target after doing deferred register stores. */
2092 target_detach (char *args
, int from_tty
)
2094 struct target_ops
* t
;
2096 if (gdbarch_has_global_breakpoints (target_gdbarch
))
2097 /* Don't remove global breakpoints here. They're removed on
2098 disconnection from the target. */
2101 /* If we're in breakpoints-always-inserted mode, have to remove
2102 them before detaching. */
2103 remove_breakpoints_pid (PIDGET (inferior_ptid
));
2105 prepare_for_detach ();
2107 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2109 if (t
->to_detach
!= NULL
)
2111 t
->to_detach (t
, args
, from_tty
);
2113 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2119 internal_error (__FILE__
, __LINE__
, "could not find a target to detach");
2123 target_disconnect (char *args
, int from_tty
)
2125 struct target_ops
*t
;
2127 /* If we're in breakpoints-always-inserted mode or if breakpoints
2128 are global across processes, we have to remove them before
2130 remove_breakpoints ();
2132 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2133 if (t
->to_disconnect
!= NULL
)
2136 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2138 t
->to_disconnect (t
, args
, from_tty
);
2146 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2148 struct target_ops
*t
;
2150 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2152 if (t
->to_wait
!= NULL
)
2154 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2158 char *status_string
;
2160 status_string
= target_waitstatus_to_string (status
);
2161 fprintf_unfiltered (gdb_stdlog
,
2162 "target_wait (%d, status) = %d, %s\n",
2163 PIDGET (ptid
), PIDGET (retval
),
2165 xfree (status_string
);
2176 target_pid_to_str (ptid_t ptid
)
2178 struct target_ops
*t
;
2180 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2182 if (t
->to_pid_to_str
!= NULL
)
2183 return (*t
->to_pid_to_str
) (t
, ptid
);
2186 return normal_pid_to_str (ptid
);
2190 target_resume (ptid_t ptid
, int step
, enum target_signal signal
)
2192 struct target_ops
*t
;
2194 target_dcache_invalidate ();
2196 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2198 if (t
->to_resume
!= NULL
)
2200 t
->to_resume (t
, ptid
, step
, signal
);
2202 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2204 step
? "step" : "continue",
2205 target_signal_to_name (signal
));
2207 registers_changed_ptid (ptid
);
2208 set_executing (ptid
, 1);
2209 set_running (ptid
, 1);
2210 clear_inline_frame_state (ptid
);
2217 /* Look through the list of possible targets for a target that can
2221 target_follow_fork (int follow_child
)
2223 struct target_ops
*t
;
2225 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2227 if (t
->to_follow_fork
!= NULL
)
2229 int retval
= t
->to_follow_fork (t
, follow_child
);
2232 fprintf_unfiltered (gdb_stdlog
, "target_follow_fork (%d) = %d\n",
2233 follow_child
, retval
);
2238 /* Some target returned a fork event, but did not know how to follow it. */
2239 internal_error (__FILE__
, __LINE__
,
2240 "could not find a target to follow fork");
2244 target_mourn_inferior (void)
2246 struct target_ops
*t
;
2248 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2250 if (t
->to_mourn_inferior
!= NULL
)
2252 t
->to_mourn_inferior (t
);
2254 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2256 /* We no longer need to keep handles on any of the object files.
2257 Make sure to release them to avoid unnecessarily locking any
2258 of them while we're not actually debugging. */
2259 bfd_cache_close_all ();
2265 internal_error (__FILE__
, __LINE__
,
2266 "could not find a target to follow mourn inferiour");
2269 /* Look for a target which can describe architectural features, starting
2270 from TARGET. If we find one, return its description. */
2272 const struct target_desc
*
2273 target_read_description (struct target_ops
*target
)
2275 struct target_ops
*t
;
2277 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2278 if (t
->to_read_description
!= NULL
)
2280 const struct target_desc
*tdesc
;
2282 tdesc
= t
->to_read_description (t
);
2290 /* The default implementation of to_search_memory.
2291 This implements a basic search of memory, reading target memory and
2292 performing the search here (as opposed to performing the search in on the
2293 target side with, for example, gdbserver). */
2296 simple_search_memory (struct target_ops
*ops
,
2297 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2298 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2299 CORE_ADDR
*found_addrp
)
2301 /* NOTE: also defined in find.c testcase. */
2302 #define SEARCH_CHUNK_SIZE 16000
2303 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2304 /* Buffer to hold memory contents for searching. */
2305 gdb_byte
*search_buf
;
2306 unsigned search_buf_size
;
2307 struct cleanup
*old_cleanups
;
2309 search_buf_size
= chunk_size
+ pattern_len
- 1;
2311 /* No point in trying to allocate a buffer larger than the search space. */
2312 if (search_space_len
< search_buf_size
)
2313 search_buf_size
= search_space_len
;
2315 search_buf
= malloc (search_buf_size
);
2316 if (search_buf
== NULL
)
2317 error (_("Unable to allocate memory to perform the search."));
2318 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2320 /* Prime the search buffer. */
2322 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2323 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2325 warning (_("Unable to access target memory at %s, halting search."),
2326 hex_string (start_addr
));
2327 do_cleanups (old_cleanups
);
2331 /* Perform the search.
2333 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2334 When we've scanned N bytes we copy the trailing bytes to the start and
2335 read in another N bytes. */
2337 while (search_space_len
>= pattern_len
)
2339 gdb_byte
*found_ptr
;
2340 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2342 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2343 pattern
, pattern_len
);
2345 if (found_ptr
!= NULL
)
2347 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2349 *found_addrp
= found_addr
;
2350 do_cleanups (old_cleanups
);
2354 /* Not found in this chunk, skip to next chunk. */
2356 /* Don't let search_space_len wrap here, it's unsigned. */
2357 if (search_space_len
>= chunk_size
)
2358 search_space_len
-= chunk_size
;
2360 search_space_len
= 0;
2362 if (search_space_len
>= pattern_len
)
2364 unsigned keep_len
= search_buf_size
- chunk_size
;
2365 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2368 /* Copy the trailing part of the previous iteration to the front
2369 of the buffer for the next iteration. */
2370 gdb_assert (keep_len
== pattern_len
- 1);
2371 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2373 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2375 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2376 search_buf
+ keep_len
, read_addr
,
2377 nr_to_read
) != nr_to_read
)
2379 warning (_("Unable to access target memory at %s, halting search."),
2380 hex_string (read_addr
));
2381 do_cleanups (old_cleanups
);
2385 start_addr
+= chunk_size
;
2391 do_cleanups (old_cleanups
);
2395 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2396 sequence of bytes in PATTERN with length PATTERN_LEN.
2398 The result is 1 if found, 0 if not found, and -1 if there was an error
2399 requiring halting of the search (e.g. memory read error).
2400 If the pattern is found the address is recorded in FOUND_ADDRP. */
2403 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2404 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2405 CORE_ADDR
*found_addrp
)
2407 struct target_ops
*t
;
2410 /* We don't use INHERIT to set current_target.to_search_memory,
2411 so we have to scan the target stack and handle targetdebug
2415 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2416 hex_string (start_addr
));
2418 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2419 if (t
->to_search_memory
!= NULL
)
2424 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2425 pattern
, pattern_len
, found_addrp
);
2429 /* If a special version of to_search_memory isn't available, use the
2431 found
= simple_search_memory (current_target
.beneath
,
2432 start_addr
, search_space_len
,
2433 pattern
, pattern_len
, found_addrp
);
2437 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2442 /* Look through the currently pushed targets. If none of them will
2443 be able to restart the currently running process, issue an error
2447 target_require_runnable (void)
2449 struct target_ops
*t
;
2451 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2453 /* If this target knows how to create a new program, then
2454 assume we will still be able to after killing the current
2455 one. Either killing and mourning will not pop T, or else
2456 find_default_run_target will find it again. */
2457 if (t
->to_create_inferior
!= NULL
)
2460 /* Do not worry about thread_stratum targets that can not
2461 create inferiors. Assume they will be pushed again if
2462 necessary, and continue to the process_stratum. */
2463 if (t
->to_stratum
== thread_stratum
2464 || t
->to_stratum
== arch_stratum
)
2468 The \"%s\" target does not support \"run\". Try \"help target\" or \"continue\"."),
2472 /* This function is only called if the target is running. In that
2473 case there should have been a process_stratum target and it
2474 should either know how to create inferiors, or not... */
2475 internal_error (__FILE__
, __LINE__
, "No targets found");
2478 /* Look through the list of possible targets for a target that can
2479 execute a run or attach command without any other data. This is
2480 used to locate the default process stratum.
2482 If DO_MESG is not NULL, the result is always valid (error() is
2483 called for errors); else, return NULL on error. */
2485 static struct target_ops
*
2486 find_default_run_target (char *do_mesg
)
2488 struct target_ops
**t
;
2489 struct target_ops
*runable
= NULL
;
2494 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2497 if ((*t
)->to_can_run
&& target_can_run (*t
))
2507 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
2516 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
2518 struct target_ops
*t
;
2520 t
= find_default_run_target ("attach");
2521 (t
->to_attach
) (t
, args
, from_tty
);
2526 find_default_create_inferior (struct target_ops
*ops
,
2527 char *exec_file
, char *allargs
, char **env
,
2530 struct target_ops
*t
;
2532 t
= find_default_run_target ("run");
2533 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
2538 find_default_can_async_p (void)
2540 struct target_ops
*t
;
2542 /* This may be called before the target is pushed on the stack;
2543 look for the default process stratum. If there's none, gdb isn't
2544 configured with a native debugger, and target remote isn't
2546 t
= find_default_run_target (NULL
);
2547 if (t
&& t
->to_can_async_p
)
2548 return (t
->to_can_async_p
) ();
2553 find_default_is_async_p (void)
2555 struct target_ops
*t
;
2557 /* This may be called before the target is pushed on the stack;
2558 look for the default process stratum. If there's none, gdb isn't
2559 configured with a native debugger, and target remote isn't
2561 t
= find_default_run_target (NULL
);
2562 if (t
&& t
->to_is_async_p
)
2563 return (t
->to_is_async_p
) ();
2568 find_default_supports_non_stop (void)
2570 struct target_ops
*t
;
2572 t
= find_default_run_target (NULL
);
2573 if (t
&& t
->to_supports_non_stop
)
2574 return (t
->to_supports_non_stop
) ();
2579 target_supports_non_stop (void)
2581 struct target_ops
*t
;
2583 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
2584 if (t
->to_supports_non_stop
)
2585 return t
->to_supports_non_stop ();
2592 target_get_osdata (const char *type
)
2594 struct target_ops
*t
;
2596 /* If we're already connected to something that can get us OS
2597 related data, use it. Otherwise, try using the native
2599 if (current_target
.to_stratum
>= process_stratum
)
2600 t
= current_target
.beneath
;
2602 t
= find_default_run_target ("get OS data");
2607 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
2610 /* Determine the current address space of thread PTID. */
2612 struct address_space
*
2613 target_thread_address_space (ptid_t ptid
)
2615 struct address_space
*aspace
;
2616 struct inferior
*inf
;
2617 struct target_ops
*t
;
2619 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2621 if (t
->to_thread_address_space
!= NULL
)
2623 aspace
= t
->to_thread_address_space (t
, ptid
);
2624 gdb_assert (aspace
);
2627 fprintf_unfiltered (gdb_stdlog
,
2628 "target_thread_address_space (%s) = %d\n",
2629 target_pid_to_str (ptid
),
2630 address_space_num (aspace
));
2635 /* Fall-back to the "main" address space of the inferior. */
2636 inf
= find_inferior_pid (ptid_get_pid (ptid
));
2638 if (inf
== NULL
|| inf
->aspace
== NULL
)
2639 internal_error (__FILE__
, __LINE__
, "\
2640 Can't determine the current address space of thread %s\n",
2641 target_pid_to_str (ptid
));
2647 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
2649 return (len
<= gdbarch_ptr_bit (target_gdbarch
) / TARGET_CHAR_BIT
);
2653 default_watchpoint_addr_within_range (struct target_ops
*target
,
2655 CORE_ADDR start
, int length
)
2657 return addr
>= start
&& addr
< start
+ length
;
2660 static struct gdbarch
*
2661 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
2663 return target_gdbarch
;
2679 return_minus_one (void)
2684 /* Find a single runnable target in the stack and return it. If for
2685 some reason there is more than one, return NULL. */
2688 find_run_target (void)
2690 struct target_ops
**t
;
2691 struct target_ops
*runable
= NULL
;
2696 for (t
= target_structs
; t
< target_structs
+ target_struct_size
; ++t
)
2698 if ((*t
)->to_can_run
&& target_can_run (*t
))
2705 return (count
== 1 ? runable
: NULL
);
2708 /* Find a single core_stratum target in the list of targets and return it.
2709 If for some reason there is more than one, return NULL. */
2712 find_core_target (void)
2714 struct target_ops
**t
;
2715 struct target_ops
*runable
= NULL
;
2720 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2723 if ((*t
)->to_stratum
== core_stratum
)
2730 return (count
== 1 ? runable
: NULL
);
2734 * Find the next target down the stack from the specified target.
2738 find_target_beneath (struct target_ops
*t
)
2744 /* The inferior process has died. Long live the inferior! */
2747 generic_mourn_inferior (void)
2751 ptid
= inferior_ptid
;
2752 inferior_ptid
= null_ptid
;
2754 if (!ptid_equal (ptid
, null_ptid
))
2756 int pid
= ptid_get_pid (ptid
);
2757 exit_inferior (pid
);
2760 breakpoint_init_inferior (inf_exited
);
2761 registers_changed ();
2763 reopen_exec_file ();
2764 reinit_frame_cache ();
2766 if (deprecated_detach_hook
)
2767 deprecated_detach_hook ();
2770 /* Helper function for child_wait and the derivatives of child_wait.
2771 HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
2772 translation of that in OURSTATUS. */
2774 store_waitstatus (struct target_waitstatus
*ourstatus
, int hoststatus
)
2776 if (WIFEXITED (hoststatus
))
2778 ourstatus
->kind
= TARGET_WAITKIND_EXITED
;
2779 ourstatus
->value
.integer
= WEXITSTATUS (hoststatus
);
2781 else if (!WIFSTOPPED (hoststatus
))
2783 ourstatus
->kind
= TARGET_WAITKIND_SIGNALLED
;
2784 ourstatus
->value
.sig
= target_signal_from_host (WTERMSIG (hoststatus
));
2788 ourstatus
->kind
= TARGET_WAITKIND_STOPPED
;
2789 ourstatus
->value
.sig
= target_signal_from_host (WSTOPSIG (hoststatus
));
2793 /* Convert a normal process ID to a string. Returns the string in a
2797 normal_pid_to_str (ptid_t ptid
)
2799 static char buf
[32];
2801 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
2806 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
2808 return normal_pid_to_str (ptid
);
2811 /* Error-catcher for target_find_memory_regions. */
2813 dummy_find_memory_regions (int (*ignore1
) (), void *ignore2
)
2815 error (_("Command not implemented for this target."));
2819 /* Error-catcher for target_make_corefile_notes. */
2821 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
2823 error (_("Command not implemented for this target."));
2827 /* Error-catcher for target_get_bookmark. */
2829 dummy_get_bookmark (char *ignore1
, int ignore2
)
2835 /* Error-catcher for target_goto_bookmark. */
2837 dummy_goto_bookmark (gdb_byte
*ignore
, int from_tty
)
2842 /* Set up the handful of non-empty slots needed by the dummy target
2846 init_dummy_target (void)
2848 dummy_target
.to_shortname
= "None";
2849 dummy_target
.to_longname
= "None";
2850 dummy_target
.to_doc
= "";
2851 dummy_target
.to_attach
= find_default_attach
;
2852 dummy_target
.to_detach
=
2853 (void (*)(struct target_ops
*, char *, int))target_ignore
;
2854 dummy_target
.to_create_inferior
= find_default_create_inferior
;
2855 dummy_target
.to_can_async_p
= find_default_can_async_p
;
2856 dummy_target
.to_is_async_p
= find_default_is_async_p
;
2857 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
2858 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
2859 dummy_target
.to_stratum
= dummy_stratum
;
2860 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
2861 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
2862 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
2863 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
2864 dummy_target
.to_xfer_partial
= default_xfer_partial
;
2865 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
2866 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
2867 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
2868 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
2869 dummy_target
.to_has_execution
= (int (*) (struct target_ops
*)) return_zero
;
2870 dummy_target
.to_stopped_by_watchpoint
= return_zero
;
2871 dummy_target
.to_stopped_data_address
=
2872 (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
;
2873 dummy_target
.to_magic
= OPS_MAGIC
;
2877 debug_to_open (char *args
, int from_tty
)
2879 debug_target
.to_open (args
, from_tty
);
2881 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
2885 target_close (struct target_ops
*targ
, int quitting
)
2887 if (targ
->to_xclose
!= NULL
)
2888 targ
->to_xclose (targ
, quitting
);
2889 else if (targ
->to_close
!= NULL
)
2890 targ
->to_close (quitting
);
2893 fprintf_unfiltered (gdb_stdlog
, "target_close (%d)\n", quitting
);
2897 target_attach (char *args
, int from_tty
)
2899 struct target_ops
*t
;
2901 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2903 if (t
->to_attach
!= NULL
)
2905 t
->to_attach (t
, args
, from_tty
);
2907 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
2913 internal_error (__FILE__
, __LINE__
,
2914 "could not find a target to attach");
2918 target_thread_alive (ptid_t ptid
)
2920 struct target_ops
*t
;
2922 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2924 if (t
->to_thread_alive
!= NULL
)
2928 retval
= t
->to_thread_alive (t
, ptid
);
2930 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
2931 PIDGET (ptid
), retval
);
2941 target_find_new_threads (void)
2943 struct target_ops
*t
;
2945 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2947 if (t
->to_find_new_threads
!= NULL
)
2949 t
->to_find_new_threads (t
);
2951 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
2959 debug_to_post_attach (int pid
)
2961 debug_target
.to_post_attach (pid
);
2963 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
2966 /* Return a pretty printed form of target_waitstatus.
2967 Space for the result is malloc'd, caller must free. */
2970 target_waitstatus_to_string (const struct target_waitstatus
*ws
)
2972 const char *kind_str
= "status->kind = ";
2976 case TARGET_WAITKIND_EXITED
:
2977 return xstrprintf ("%sexited, status = %d",
2978 kind_str
, ws
->value
.integer
);
2979 case TARGET_WAITKIND_STOPPED
:
2980 return xstrprintf ("%sstopped, signal = %s",
2981 kind_str
, target_signal_to_name (ws
->value
.sig
));
2982 case TARGET_WAITKIND_SIGNALLED
:
2983 return xstrprintf ("%ssignalled, signal = %s",
2984 kind_str
, target_signal_to_name (ws
->value
.sig
));
2985 case TARGET_WAITKIND_LOADED
:
2986 return xstrprintf ("%sloaded", kind_str
);
2987 case TARGET_WAITKIND_FORKED
:
2988 return xstrprintf ("%sforked", kind_str
);
2989 case TARGET_WAITKIND_VFORKED
:
2990 return xstrprintf ("%svforked", kind_str
);
2991 case TARGET_WAITKIND_EXECD
:
2992 return xstrprintf ("%sexecd", kind_str
);
2993 case TARGET_WAITKIND_SYSCALL_ENTRY
:
2994 return xstrprintf ("%sentered syscall", kind_str
);
2995 case TARGET_WAITKIND_SYSCALL_RETURN
:
2996 return xstrprintf ("%sexited syscall", kind_str
);
2997 case TARGET_WAITKIND_SPURIOUS
:
2998 return xstrprintf ("%sspurious", kind_str
);
2999 case TARGET_WAITKIND_IGNORE
:
3000 return xstrprintf ("%signore", kind_str
);
3001 case TARGET_WAITKIND_NO_HISTORY
:
3002 return xstrprintf ("%sno-history", kind_str
);
3004 return xstrprintf ("%sunknown???", kind_str
);
3009 debug_print_register (const char * func
,
3010 struct regcache
*regcache
, int regno
)
3012 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3014 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3015 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3016 && gdbarch_register_name (gdbarch
, regno
) != NULL
3017 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3018 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3019 gdbarch_register_name (gdbarch
, regno
));
3021 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3022 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3024 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3025 int i
, size
= register_size (gdbarch
, regno
);
3026 unsigned char buf
[MAX_REGISTER_SIZE
];
3028 regcache_raw_collect (regcache
, regno
, buf
);
3029 fprintf_unfiltered (gdb_stdlog
, " = ");
3030 for (i
= 0; i
< size
; i
++)
3032 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3034 if (size
<= sizeof (LONGEST
))
3036 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3038 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3039 core_addr_to_string_nz (val
), plongest (val
));
3042 fprintf_unfiltered (gdb_stdlog
, "\n");
3046 target_fetch_registers (struct regcache
*regcache
, int regno
)
3048 struct target_ops
*t
;
3050 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3052 if (t
->to_fetch_registers
!= NULL
)
3054 t
->to_fetch_registers (t
, regcache
, regno
);
3056 debug_print_register ("target_fetch_registers", regcache
, regno
);
3063 target_store_registers (struct regcache
*regcache
, int regno
)
3065 struct target_ops
*t
;
3067 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3069 if (t
->to_store_registers
!= NULL
)
3071 t
->to_store_registers (t
, regcache
, regno
);
3074 debug_print_register ("target_store_registers", regcache
, regno
);
3084 target_core_of_thread (ptid_t ptid
)
3086 struct target_ops
*t
;
3088 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3090 if (t
->to_core_of_thread
!= NULL
)
3092 int retval
= t
->to_core_of_thread (t
, ptid
);
3095 fprintf_unfiltered (gdb_stdlog
, "target_core_of_thread (%d) = %d\n",
3096 PIDGET (ptid
), retval
);
3105 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3107 struct target_ops
*t
;
3109 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3111 if (t
->to_verify_memory
!= NULL
)
3113 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3116 fprintf_unfiltered (gdb_stdlog
, "target_verify_memory (%s, %s) = %d\n",
3117 paddress (target_gdbarch
, memaddr
),
3128 debug_to_prepare_to_store (struct regcache
*regcache
)
3130 debug_target
.to_prepare_to_store (regcache
);
3132 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
3136 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
3137 int write
, struct mem_attrib
*attrib
,
3138 struct target_ops
*target
)
3142 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
3145 fprintf_unfiltered (gdb_stdlog
,
3146 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
3147 paddress (target_gdbarch
, memaddr
), len
,
3148 write
? "write" : "read", retval
);
3154 fputs_unfiltered (", bytes =", gdb_stdlog
);
3155 for (i
= 0; i
< retval
; i
++)
3157 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
3159 if (targetdebug
< 2 && i
> 0)
3161 fprintf_unfiltered (gdb_stdlog
, " ...");
3164 fprintf_unfiltered (gdb_stdlog
, "\n");
3167 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
3171 fputc_unfiltered ('\n', gdb_stdlog
);
3177 debug_to_files_info (struct target_ops
*target
)
3179 debug_target
.to_files_info (target
);
3181 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
3185 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
3186 struct bp_target_info
*bp_tgt
)
3190 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
3192 fprintf_unfiltered (gdb_stdlog
,
3193 "target_insert_breakpoint (0x%lx, xxx) = %ld\n",
3194 (unsigned long) bp_tgt
->placed_address
,
3195 (unsigned long) retval
);
3200 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
3201 struct bp_target_info
*bp_tgt
)
3205 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
3207 fprintf_unfiltered (gdb_stdlog
,
3208 "target_remove_breakpoint (0x%lx, xxx) = %ld\n",
3209 (unsigned long) bp_tgt
->placed_address
,
3210 (unsigned long) retval
);
3215 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
3219 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
3221 fprintf_unfiltered (gdb_stdlog
,
3222 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
3223 (unsigned long) type
,
3224 (unsigned long) cnt
,
3225 (unsigned long) from_tty
,
3226 (unsigned long) retval
);
3231 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3235 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
3237 fprintf_unfiltered (gdb_stdlog
,
3238 "target_region_ok_for_hw_watchpoint (%ld, %ld) = 0x%lx\n",
3239 (unsigned long) addr
,
3240 (unsigned long) len
,
3241 (unsigned long) retval
);
3246 debug_to_stopped_by_watchpoint (void)
3250 retval
= debug_target
.to_stopped_by_watchpoint ();
3252 fprintf_unfiltered (gdb_stdlog
,
3253 "target_stopped_by_watchpoint () = %ld\n",
3254 (unsigned long) retval
);
3259 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
3263 retval
= debug_target
.to_stopped_data_address (target
, addr
);
3265 fprintf_unfiltered (gdb_stdlog
,
3266 "target_stopped_data_address ([0x%lx]) = %ld\n",
3267 (unsigned long)*addr
,
3268 (unsigned long)retval
);
3273 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
3275 CORE_ADDR start
, int length
)
3279 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
3282 fprintf_filtered (gdb_stdlog
,
3283 "target_watchpoint_addr_within_range (0x%lx, 0x%lx, %d) = %d\n",
3284 (unsigned long) addr
, (unsigned long) start
, length
,
3290 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
3291 struct bp_target_info
*bp_tgt
)
3295 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
3297 fprintf_unfiltered (gdb_stdlog
,
3298 "target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n",
3299 (unsigned long) bp_tgt
->placed_address
,
3300 (unsigned long) retval
);
3305 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
3306 struct bp_target_info
*bp_tgt
)
3310 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
3312 fprintf_unfiltered (gdb_stdlog
,
3313 "target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n",
3314 (unsigned long) bp_tgt
->placed_address
,
3315 (unsigned long) retval
);
3320 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
3324 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
);
3326 fprintf_unfiltered (gdb_stdlog
,
3327 "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n",
3328 (unsigned long) addr
, len
, type
, (unsigned long) retval
);
3333 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
3337 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
);
3339 fprintf_unfiltered (gdb_stdlog
,
3340 "target_remove_watchpoint (0x%lx, %d, %d) = %ld\n",
3341 (unsigned long) addr
, len
, type
, (unsigned long) retval
);
3346 debug_to_terminal_init (void)
3348 debug_target
.to_terminal_init ();
3350 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
3354 debug_to_terminal_inferior (void)
3356 debug_target
.to_terminal_inferior ();
3358 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
3362 debug_to_terminal_ours_for_output (void)
3364 debug_target
.to_terminal_ours_for_output ();
3366 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
3370 debug_to_terminal_ours (void)
3372 debug_target
.to_terminal_ours ();
3374 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
3378 debug_to_terminal_save_ours (void)
3380 debug_target
.to_terminal_save_ours ();
3382 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
3386 debug_to_terminal_info (char *arg
, int from_tty
)
3388 debug_target
.to_terminal_info (arg
, from_tty
);
3390 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
3395 debug_to_load (char *args
, int from_tty
)
3397 debug_target
.to_load (args
, from_tty
);
3399 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
3403 debug_to_lookup_symbol (char *name
, CORE_ADDR
*addrp
)
3407 retval
= debug_target
.to_lookup_symbol (name
, addrp
);
3409 fprintf_unfiltered (gdb_stdlog
, "target_lookup_symbol (%s, xxx)\n", name
);
3415 debug_to_post_startup_inferior (ptid_t ptid
)
3417 debug_target
.to_post_startup_inferior (ptid
);
3419 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
3424 debug_to_acknowledge_created_inferior (int pid
)
3426 debug_target
.to_acknowledge_created_inferior (pid
);
3428 fprintf_unfiltered (gdb_stdlog
, "target_acknowledge_created_inferior (%d)\n",
3433 debug_to_insert_fork_catchpoint (int pid
)
3435 debug_target
.to_insert_fork_catchpoint (pid
);
3437 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d)\n",
3442 debug_to_remove_fork_catchpoint (int pid
)
3446 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
3448 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
3455 debug_to_insert_vfork_catchpoint (int pid
)
3457 debug_target
.to_insert_vfork_catchpoint (pid
);
3459 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d)\n",
3464 debug_to_remove_vfork_catchpoint (int pid
)
3468 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
3470 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
3477 debug_to_insert_exec_catchpoint (int pid
)
3479 debug_target
.to_insert_exec_catchpoint (pid
);
3481 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d)\n",
3486 debug_to_remove_exec_catchpoint (int pid
)
3490 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
3492 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
3499 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
3503 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
3505 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
3506 pid
, wait_status
, *exit_status
, has_exited
);
3512 debug_to_can_run (void)
3516 retval
= debug_target
.to_can_run ();
3518 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
3524 debug_to_notice_signals (ptid_t ptid
)
3526 debug_target
.to_notice_signals (ptid
);
3528 fprintf_unfiltered (gdb_stdlog
, "target_notice_signals (%d)\n",
3532 static struct gdbarch
*
3533 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3535 struct gdbarch
*retval
;
3537 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
3539 fprintf_unfiltered (gdb_stdlog
, "target_thread_architecture (%s) = %s [%s]\n",
3540 target_pid_to_str (ptid
), host_address_to_string (retval
),
3541 gdbarch_bfd_arch_info (retval
)->printable_name
);
3546 debug_to_stop (ptid_t ptid
)
3548 debug_target
.to_stop (ptid
);
3550 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
3551 target_pid_to_str (ptid
));
3555 debug_to_rcmd (char *command
,
3556 struct ui_file
*outbuf
)
3558 debug_target
.to_rcmd (command
, outbuf
);
3559 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
3563 debug_to_pid_to_exec_file (int pid
)
3567 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
3569 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
3576 setup_target_debug (void)
3578 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
3580 current_target
.to_open
= debug_to_open
;
3581 current_target
.to_post_attach
= debug_to_post_attach
;
3582 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
3583 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
3584 current_target
.to_files_info
= debug_to_files_info
;
3585 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
3586 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
3587 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
3588 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
3589 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
3590 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
3591 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
3592 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
3593 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
3594 current_target
.to_watchpoint_addr_within_range
= debug_to_watchpoint_addr_within_range
;
3595 current_target
.to_region_ok_for_hw_watchpoint
= debug_to_region_ok_for_hw_watchpoint
;
3596 current_target
.to_terminal_init
= debug_to_terminal_init
;
3597 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
3598 current_target
.to_terminal_ours_for_output
= debug_to_terminal_ours_for_output
;
3599 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
3600 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
3601 current_target
.to_terminal_info
= debug_to_terminal_info
;
3602 current_target
.to_load
= debug_to_load
;
3603 current_target
.to_lookup_symbol
= debug_to_lookup_symbol
;
3604 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
3605 current_target
.to_acknowledge_created_inferior
= debug_to_acknowledge_created_inferior
;
3606 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
3607 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
3608 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
3609 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
3610 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
3611 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
3612 current_target
.to_has_exited
= debug_to_has_exited
;
3613 current_target
.to_can_run
= debug_to_can_run
;
3614 current_target
.to_notice_signals
= debug_to_notice_signals
;
3615 current_target
.to_stop
= debug_to_stop
;
3616 current_target
.to_rcmd
= debug_to_rcmd
;
3617 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
3618 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
3622 static char targ_desc
[] =
3623 "Names of targets and files being debugged.\n\
3624 Shows the entire stack of targets currently in use (including the exec-file,\n\
3625 core-file, and process, if any), as well as the symbol file name.";
3628 do_monitor_command (char *cmd
,
3631 if ((current_target
.to_rcmd
3632 == (void (*) (char *, struct ui_file
*)) tcomplain
)
3633 || (current_target
.to_rcmd
== debug_to_rcmd
3634 && (debug_target
.to_rcmd
3635 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
3636 error (_("\"monitor\" command not supported by this target."));
3637 target_rcmd (cmd
, gdb_stdtarg
);
3640 /* Print the name of each layers of our target stack. */
3643 maintenance_print_target_stack (char *cmd
, int from_tty
)
3645 struct target_ops
*t
;
3647 printf_filtered (_("The current target stack is:\n"));
3649 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3651 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
3655 /* Controls if async mode is permitted. */
3656 int target_async_permitted
= 0;
3658 /* The set command writes to this variable. If the inferior is
3659 executing, linux_nat_async_permitted is *not* updated. */
3660 static int target_async_permitted_1
= 0;
3663 set_maintenance_target_async_permitted (char *args
, int from_tty
,
3664 struct cmd_list_element
*c
)
3666 if (have_live_inferiors ())
3668 target_async_permitted_1
= target_async_permitted
;
3669 error (_("Cannot change this setting while the inferior is running."));
3672 target_async_permitted
= target_async_permitted_1
;
3676 show_maintenance_target_async_permitted (struct ui_file
*file
, int from_tty
,
3677 struct cmd_list_element
*c
,
3680 fprintf_filtered (file
, _("\
3681 Controlling the inferior in asynchronous mode is %s.\n"), value
);
3685 initialize_targets (void)
3687 init_dummy_target ();
3688 push_target (&dummy_target
);
3690 add_info ("target", target_info
, targ_desc
);
3691 add_info ("files", target_info
, targ_desc
);
3693 add_setshow_zinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
3694 Set target debugging."), _("\
3695 Show target debugging."), _("\
3696 When non-zero, target debugging is enabled. Higher numbers are more\n\
3697 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
3701 &setdebuglist
, &showdebuglist
);
3703 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
3704 &trust_readonly
, _("\
3705 Set mode for reading from readonly sections."), _("\
3706 Show mode for reading from readonly sections."), _("\
3707 When this mode is on, memory reads from readonly sections (such as .text)\n\
3708 will be read from the object file instead of from the target. This will\n\
3709 result in significant performance improvement for remote targets."),
3711 show_trust_readonly
,
3712 &setlist
, &showlist
);
3714 add_com ("monitor", class_obscure
, do_monitor_command
,
3715 _("Send a command to the remote monitor (remote targets only)."));
3717 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
3718 _("Print the name of each layer of the internal target stack."),
3719 &maintenanceprintlist
);
3721 add_setshow_boolean_cmd ("target-async", no_class
,
3722 &target_async_permitted_1
, _("\
3723 Set whether gdb controls the inferior in asynchronous mode."), _("\
3724 Show whether gdb controls the inferior in asynchronous mode."), _("\
3725 Tells gdb whether to control the inferior in asynchronous mode."),
3726 set_maintenance_target_async_permitted
,
3727 show_maintenance_target_async_permitted
,
3731 add_setshow_boolean_cmd ("stack-cache", class_support
,
3732 &stack_cache_enabled_p_1
, _("\
3733 Set cache use for stack access."), _("\
3734 Show cache use for stack access."), _("\
3735 When on, use the data cache for all stack access, regardless of any\n\
3736 configured memory regions. This improves remote performance significantly.\n\
3737 By default, caching for stack access is on."),
3738 set_stack_cache_enabled_p
,
3739 show_stack_cache_enabled_p
,
3740 &setlist
, &showlist
);
3742 target_dcache
= dcache_init ();