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,
121 struct expression
*);
123 static int debug_to_remove_watchpoint (CORE_ADDR
, int, int,
124 struct expression
*);
126 static int debug_to_stopped_by_watchpoint (void);
128 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
130 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
131 CORE_ADDR
, CORE_ADDR
, int);
133 static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
135 static int debug_to_can_accel_watchpoint_condition (CORE_ADDR
, int, int,
136 struct expression
*);
138 static void debug_to_terminal_init (void);
140 static void debug_to_terminal_inferior (void);
142 static void debug_to_terminal_ours_for_output (void);
144 static void debug_to_terminal_save_ours (void);
146 static void debug_to_terminal_ours (void);
148 static void debug_to_terminal_info (char *, int);
150 static void debug_to_load (char *, int);
152 static int debug_to_lookup_symbol (char *, CORE_ADDR
*);
154 static int debug_to_can_run (void);
156 static void debug_to_notice_signals (ptid_t
);
158 static void debug_to_stop (ptid_t
);
160 /* NOTE: cagney/2004-09-29: Many targets reference this variable in
161 wierd and mysterious ways. Putting the variable here lets those
162 wierd and mysterious ways keep building while they are being
163 converted to the inferior inheritance structure. */
164 struct target_ops deprecated_child_ops
;
166 /* Pointer to array of target architecture structures; the size of the
167 array; the current index into the array; the allocated size of the
169 struct target_ops
**target_structs
;
170 unsigned target_struct_size
;
171 unsigned target_struct_index
;
172 unsigned target_struct_allocsize
;
173 #define DEFAULT_ALLOCSIZE 10
175 /* The initial current target, so that there is always a semi-valid
178 static struct target_ops dummy_target
;
180 /* Top of target stack. */
182 static struct target_ops
*target_stack
;
184 /* The target structure we are currently using to talk to a process
185 or file or whatever "inferior" we have. */
187 struct target_ops current_target
;
189 /* Command list for target. */
191 static struct cmd_list_element
*targetlist
= NULL
;
193 /* Nonzero if we should trust readonly sections from the
194 executable when reading memory. */
196 static int trust_readonly
= 0;
198 /* Nonzero if we should show true memory content including
199 memory breakpoint inserted by gdb. */
201 static int show_memory_breakpoints
= 0;
203 /* These globals control whether GDB attempts to perform these
204 operations; they are useful for targets that need to prevent
205 inadvertant disruption, such as in non-stop mode. */
207 int may_write_registers
= 1;
209 int may_write_memory
= 1;
211 int may_insert_breakpoints
= 1;
213 int may_insert_tracepoints
= 1;
215 int may_insert_fast_tracepoints
= 1;
219 /* Non-zero if we want to see trace of target level stuff. */
221 static int targetdebug
= 0;
223 show_targetdebug (struct ui_file
*file
, int from_tty
,
224 struct cmd_list_element
*c
, const char *value
)
226 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
229 static void setup_target_debug (void);
231 /* The option sets this. */
232 static int stack_cache_enabled_p_1
= 1;
233 /* And set_stack_cache_enabled_p updates this.
234 The reason for the separation is so that we don't flush the cache for
235 on->on transitions. */
236 static int stack_cache_enabled_p
= 1;
238 /* This is called *after* the stack-cache has been set.
239 Flush the cache for off->on and on->off transitions.
240 There's no real need to flush the cache for on->off transitions,
241 except cleanliness. */
244 set_stack_cache_enabled_p (char *args
, int from_tty
,
245 struct cmd_list_element
*c
)
247 if (stack_cache_enabled_p
!= stack_cache_enabled_p_1
)
248 target_dcache_invalidate ();
250 stack_cache_enabled_p
= stack_cache_enabled_p_1
;
254 show_stack_cache_enabled_p (struct ui_file
*file
, int from_tty
,
255 struct cmd_list_element
*c
, const char *value
)
257 fprintf_filtered (file
, _("Cache use for stack accesses is %s.\n"), value
);
260 /* Cache of memory operations, to speed up remote access. */
261 static DCACHE
*target_dcache
;
263 /* Invalidate the target dcache. */
266 target_dcache_invalidate (void)
268 dcache_invalidate (target_dcache
);
271 /* The user just typed 'target' without the name of a target. */
274 target_command (char *arg
, int from_tty
)
276 fputs_filtered ("Argument required (target name). Try `help target'\n",
280 /* Default target_has_* methods for process_stratum targets. */
283 default_child_has_all_memory (struct target_ops
*ops
)
285 /* If no inferior selected, then we can't read memory here. */
286 if (ptid_equal (inferior_ptid
, null_ptid
))
293 default_child_has_memory (struct target_ops
*ops
)
295 /* If no inferior selected, then we can't read memory here. */
296 if (ptid_equal (inferior_ptid
, null_ptid
))
303 default_child_has_stack (struct target_ops
*ops
)
305 /* If no inferior selected, there's no stack. */
306 if (ptid_equal (inferior_ptid
, null_ptid
))
313 default_child_has_registers (struct target_ops
*ops
)
315 /* Can't read registers from no inferior. */
316 if (ptid_equal (inferior_ptid
, null_ptid
))
323 default_child_has_execution (struct target_ops
*ops
)
325 /* If there's no thread selected, then we can't make it run through
327 if (ptid_equal (inferior_ptid
, null_ptid
))
335 target_has_all_memory_1 (void)
337 struct target_ops
*t
;
339 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
340 if (t
->to_has_all_memory (t
))
347 target_has_memory_1 (void)
349 struct target_ops
*t
;
351 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
352 if (t
->to_has_memory (t
))
359 target_has_stack_1 (void)
361 struct target_ops
*t
;
363 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
364 if (t
->to_has_stack (t
))
371 target_has_registers_1 (void)
373 struct target_ops
*t
;
375 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
376 if (t
->to_has_registers (t
))
383 target_has_execution_1 (void)
385 struct target_ops
*t
;
387 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
388 if (t
->to_has_execution (t
))
394 /* Add a possible target architecture to the list. */
397 add_target (struct target_ops
*t
)
399 /* Provide default values for all "must have" methods. */
400 if (t
->to_xfer_partial
== NULL
)
401 t
->to_xfer_partial
= default_xfer_partial
;
403 if (t
->to_has_all_memory
== NULL
)
404 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
406 if (t
->to_has_memory
== NULL
)
407 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
409 if (t
->to_has_stack
== NULL
)
410 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
412 if (t
->to_has_registers
== NULL
)
413 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
415 if (t
->to_has_execution
== NULL
)
416 t
->to_has_execution
= (int (*) (struct target_ops
*)) return_zero
;
420 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
421 target_structs
= (struct target_ops
**) xmalloc
422 (target_struct_allocsize
* sizeof (*target_structs
));
424 if (target_struct_size
>= target_struct_allocsize
)
426 target_struct_allocsize
*= 2;
427 target_structs
= (struct target_ops
**)
428 xrealloc ((char *) target_structs
,
429 target_struct_allocsize
* sizeof (*target_structs
));
431 target_structs
[target_struct_size
++] = t
;
433 if (targetlist
== NULL
)
434 add_prefix_cmd ("target", class_run
, target_command
, _("\
435 Connect to a target machine or process.\n\
436 The first argument is the type or protocol of the target machine.\n\
437 Remaining arguments are interpreted by the target protocol. For more\n\
438 information on the arguments for a particular protocol, type\n\
439 `help target ' followed by the protocol name."),
440 &targetlist
, "target ", 0, &cmdlist
);
441 add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
454 struct target_ops
*t
;
456 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
457 if (t
->to_kill
!= NULL
)
460 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
470 target_load (char *arg
, int from_tty
)
472 target_dcache_invalidate ();
473 (*current_target
.to_load
) (arg
, from_tty
);
477 target_create_inferior (char *exec_file
, char *args
,
478 char **env
, int from_tty
)
480 struct target_ops
*t
;
482 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
484 if (t
->to_create_inferior
!= NULL
)
486 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
488 fprintf_unfiltered (gdb_stdlog
,
489 "target_create_inferior (%s, %s, xxx, %d)\n",
490 exec_file
, args
, from_tty
);
495 internal_error (__FILE__
, __LINE__
,
496 "could not find a target to create inferior");
500 target_terminal_inferior (void)
502 /* A background resume (``run&'') should leave GDB in control of the
503 terminal. Use target_can_async_p, not target_is_async_p, since at
504 this point the target is not async yet. However, if sync_execution
505 is not set, we know it will become async prior to resume. */
506 if (target_can_async_p () && !sync_execution
)
509 /* If GDB is resuming the inferior in the foreground, install
510 inferior's terminal modes. */
511 (*current_target
.to_terminal_inferior
) ();
515 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
516 struct target_ops
*t
)
518 errno
= EIO
; /* Can't read/write this location */
519 return 0; /* No bytes handled */
525 error (_("You can't do that when your target is `%s'"),
526 current_target
.to_shortname
);
532 error (_("You can't do that without a process to debug."));
536 nosymbol (char *name
, CORE_ADDR
*addrp
)
538 return 1; /* Symbol does not exist in target env */
542 default_terminal_info (char *args
, int from_tty
)
544 printf_unfiltered (_("No saved terminal information.\n"));
547 /* A default implementation for the to_get_ada_task_ptid target method.
549 This function builds the PTID by using both LWP and TID as part of
550 the PTID lwp and tid elements. The pid used is the pid of the
554 default_get_ada_task_ptid (long lwp
, long tid
)
556 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
559 /* Go through the target stack from top to bottom, copying over zero
560 entries in current_target, then filling in still empty entries. In
561 effect, we are doing class inheritance through the pushed target
564 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
565 is currently implemented, is that it discards any knowledge of
566 which target an inherited method originally belonged to.
567 Consequently, new new target methods should instead explicitly and
568 locally search the target stack for the target that can handle the
572 update_current_target (void)
574 struct target_ops
*t
;
576 /* First, reset current's contents. */
577 memset (¤t_target
, 0, sizeof (current_target
));
579 #define INHERIT(FIELD, TARGET) \
580 if (!current_target.FIELD) \
581 current_target.FIELD = (TARGET)->FIELD
583 for (t
= target_stack
; t
; t
= t
->beneath
)
585 INHERIT (to_shortname
, t
);
586 INHERIT (to_longname
, t
);
588 /* Do not inherit to_open. */
589 /* Do not inherit to_close. */
590 /* Do not inherit to_attach. */
591 INHERIT (to_post_attach
, t
);
592 INHERIT (to_attach_no_wait
, t
);
593 /* Do not inherit to_detach. */
594 /* Do not inherit to_disconnect. */
595 /* Do not inherit to_resume. */
596 /* Do not inherit to_wait. */
597 /* Do not inherit to_fetch_registers. */
598 /* Do not inherit to_store_registers. */
599 INHERIT (to_prepare_to_store
, t
);
600 INHERIT (deprecated_xfer_memory
, t
);
601 INHERIT (to_files_info
, t
);
602 INHERIT (to_insert_breakpoint
, t
);
603 INHERIT (to_remove_breakpoint
, t
);
604 INHERIT (to_can_use_hw_breakpoint
, t
);
605 INHERIT (to_insert_hw_breakpoint
, t
);
606 INHERIT (to_remove_hw_breakpoint
, t
);
607 INHERIT (to_insert_watchpoint
, t
);
608 INHERIT (to_remove_watchpoint
, t
);
609 INHERIT (to_stopped_data_address
, t
);
610 INHERIT (to_have_steppable_watchpoint
, t
);
611 INHERIT (to_have_continuable_watchpoint
, t
);
612 INHERIT (to_stopped_by_watchpoint
, t
);
613 INHERIT (to_watchpoint_addr_within_range
, t
);
614 INHERIT (to_region_ok_for_hw_watchpoint
, t
);
615 INHERIT (to_can_accel_watchpoint_condition
, t
);
616 INHERIT (to_terminal_init
, t
);
617 INHERIT (to_terminal_inferior
, t
);
618 INHERIT (to_terminal_ours_for_output
, t
);
619 INHERIT (to_terminal_ours
, t
);
620 INHERIT (to_terminal_save_ours
, t
);
621 INHERIT (to_terminal_info
, t
);
622 /* Do not inherit to_kill. */
623 INHERIT (to_load
, t
);
624 INHERIT (to_lookup_symbol
, t
);
625 /* Do no inherit to_create_inferior. */
626 INHERIT (to_post_startup_inferior
, t
);
627 INHERIT (to_acknowledge_created_inferior
, t
);
628 INHERIT (to_insert_fork_catchpoint
, t
);
629 INHERIT (to_remove_fork_catchpoint
, t
);
630 INHERIT (to_insert_vfork_catchpoint
, t
);
631 INHERIT (to_remove_vfork_catchpoint
, t
);
632 /* Do not inherit to_follow_fork. */
633 INHERIT (to_insert_exec_catchpoint
, t
);
634 INHERIT (to_remove_exec_catchpoint
, t
);
635 INHERIT (to_set_syscall_catchpoint
, t
);
636 INHERIT (to_has_exited
, t
);
637 /* Do not inherit to_mourn_inferior. */
638 INHERIT (to_can_run
, t
);
639 INHERIT (to_notice_signals
, t
);
640 /* Do not inherit to_thread_alive. */
641 /* Do not inherit to_find_new_threads. */
642 /* Do not inherit to_pid_to_str. */
643 INHERIT (to_extra_thread_info
, t
);
644 INHERIT (to_stop
, t
);
645 /* Do not inherit to_xfer_partial. */
646 INHERIT (to_rcmd
, t
);
647 INHERIT (to_pid_to_exec_file
, t
);
648 INHERIT (to_log_command
, t
);
649 INHERIT (to_stratum
, t
);
650 /* Do not inherit to_has_all_memory */
651 /* Do not inherit to_has_memory */
652 /* Do not inherit to_has_stack */
653 /* Do not inherit to_has_registers */
654 /* Do not inherit to_has_execution */
655 INHERIT (to_has_thread_control
, t
);
656 INHERIT (to_can_async_p
, t
);
657 INHERIT (to_is_async_p
, t
);
658 INHERIT (to_async
, t
);
659 INHERIT (to_async_mask
, t
);
660 INHERIT (to_find_memory_regions
, t
);
661 INHERIT (to_make_corefile_notes
, t
);
662 INHERIT (to_get_bookmark
, t
);
663 INHERIT (to_goto_bookmark
, t
);
664 /* Do not inherit to_get_thread_local_address. */
665 INHERIT (to_can_execute_reverse
, t
);
666 INHERIT (to_thread_architecture
, t
);
667 /* Do not inherit to_read_description. */
668 INHERIT (to_get_ada_task_ptid
, t
);
669 /* Do not inherit to_search_memory. */
670 INHERIT (to_supports_multi_process
, t
);
671 INHERIT (to_trace_init
, t
);
672 INHERIT (to_download_tracepoint
, t
);
673 INHERIT (to_download_trace_state_variable
, t
);
674 INHERIT (to_trace_set_readonly_regions
, t
);
675 INHERIT (to_trace_start
, t
);
676 INHERIT (to_get_trace_status
, t
);
677 INHERIT (to_trace_stop
, t
);
678 INHERIT (to_trace_find
, t
);
679 INHERIT (to_get_trace_state_variable_value
, t
);
680 INHERIT (to_save_trace_data
, t
);
681 INHERIT (to_upload_tracepoints
, t
);
682 INHERIT (to_upload_trace_state_variables
, t
);
683 INHERIT (to_get_raw_trace_data
, t
);
684 INHERIT (to_set_disconnected_tracing
, t
);
685 INHERIT (to_set_circular_trace_buffer
, t
);
686 INHERIT (to_get_tib_address
, t
);
687 INHERIT (to_set_permissions
, t
);
688 INHERIT (to_static_tracepoint_marker_at
, t
);
689 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
690 INHERIT (to_magic
, t
);
691 /* Do not inherit to_memory_map. */
692 /* Do not inherit to_flash_erase. */
693 /* Do not inherit to_flash_done. */
697 /* Clean up a target struct so it no longer has any zero pointers in
698 it. Some entries are defaulted to a method that print an error,
699 others are hard-wired to a standard recursive default. */
701 #define de_fault(field, value) \
702 if (!current_target.field) \
703 current_target.field = value
706 (void (*) (char *, int))
711 de_fault (to_post_attach
,
714 de_fault (to_prepare_to_store
,
715 (void (*) (struct regcache
*))
717 de_fault (deprecated_xfer_memory
,
718 (int (*) (CORE_ADDR
, gdb_byte
*, int, int, struct mem_attrib
*, struct target_ops
*))
720 de_fault (to_files_info
,
721 (void (*) (struct target_ops
*))
723 de_fault (to_insert_breakpoint
,
724 memory_insert_breakpoint
);
725 de_fault (to_remove_breakpoint
,
726 memory_remove_breakpoint
);
727 de_fault (to_can_use_hw_breakpoint
,
728 (int (*) (int, int, int))
730 de_fault (to_insert_hw_breakpoint
,
731 (int (*) (struct gdbarch
*, struct bp_target_info
*))
733 de_fault (to_remove_hw_breakpoint
,
734 (int (*) (struct gdbarch
*, struct bp_target_info
*))
736 de_fault (to_insert_watchpoint
,
737 (int (*) (CORE_ADDR
, int, int, struct expression
*))
739 de_fault (to_remove_watchpoint
,
740 (int (*) (CORE_ADDR
, int, int, struct expression
*))
742 de_fault (to_stopped_by_watchpoint
,
745 de_fault (to_stopped_data_address
,
746 (int (*) (struct target_ops
*, CORE_ADDR
*))
748 de_fault (to_watchpoint_addr_within_range
,
749 default_watchpoint_addr_within_range
);
750 de_fault (to_region_ok_for_hw_watchpoint
,
751 default_region_ok_for_hw_watchpoint
);
752 de_fault (to_can_accel_watchpoint_condition
,
753 (int (*) (CORE_ADDR
, int, int, struct expression
*))
755 de_fault (to_terminal_init
,
758 de_fault (to_terminal_inferior
,
761 de_fault (to_terminal_ours_for_output
,
764 de_fault (to_terminal_ours
,
767 de_fault (to_terminal_save_ours
,
770 de_fault (to_terminal_info
,
771 default_terminal_info
);
773 (void (*) (char *, int))
775 de_fault (to_lookup_symbol
,
776 (int (*) (char *, CORE_ADDR
*))
778 de_fault (to_post_startup_inferior
,
781 de_fault (to_acknowledge_created_inferior
,
784 de_fault (to_insert_fork_catchpoint
,
787 de_fault (to_remove_fork_catchpoint
,
790 de_fault (to_insert_vfork_catchpoint
,
793 de_fault (to_remove_vfork_catchpoint
,
796 de_fault (to_insert_exec_catchpoint
,
799 de_fault (to_remove_exec_catchpoint
,
802 de_fault (to_set_syscall_catchpoint
,
803 (int (*) (int, int, int, int, int *))
805 de_fault (to_has_exited
,
806 (int (*) (int, int, int *))
808 de_fault (to_can_run
,
810 de_fault (to_notice_signals
,
813 de_fault (to_extra_thread_info
,
814 (char *(*) (struct thread_info
*))
819 current_target
.to_xfer_partial
= current_xfer_partial
;
821 (void (*) (char *, struct ui_file
*))
823 de_fault (to_pid_to_exec_file
,
827 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
829 de_fault (to_async_mask
,
832 de_fault (to_thread_architecture
,
833 default_thread_architecture
);
834 current_target
.to_read_description
= NULL
;
835 de_fault (to_get_ada_task_ptid
,
836 (ptid_t (*) (long, long))
837 default_get_ada_task_ptid
);
838 de_fault (to_supports_multi_process
,
841 de_fault (to_trace_init
,
844 de_fault (to_download_tracepoint
,
845 (void (*) (struct breakpoint
*))
847 de_fault (to_download_trace_state_variable
,
848 (void (*) (struct trace_state_variable
*))
850 de_fault (to_trace_set_readonly_regions
,
853 de_fault (to_trace_start
,
856 de_fault (to_get_trace_status
,
857 (int (*) (struct trace_status
*))
859 de_fault (to_trace_stop
,
862 de_fault (to_trace_find
,
863 (int (*) (enum trace_find_type
, int, ULONGEST
, ULONGEST
, int *))
865 de_fault (to_get_trace_state_variable_value
,
866 (int (*) (int, LONGEST
*))
868 de_fault (to_save_trace_data
,
869 (int (*) (const char *))
871 de_fault (to_upload_tracepoints
,
872 (int (*) (struct uploaded_tp
**))
874 de_fault (to_upload_trace_state_variables
,
875 (int (*) (struct uploaded_tsv
**))
877 de_fault (to_get_raw_trace_data
,
878 (LONGEST (*) (gdb_byte
*, ULONGEST
, LONGEST
))
880 de_fault (to_set_disconnected_tracing
,
883 de_fault (to_set_circular_trace_buffer
,
886 de_fault (to_get_tib_address
,
887 (int (*) (ptid_t
, CORE_ADDR
*))
889 de_fault (to_set_permissions
,
892 de_fault (to_static_tracepoint_marker_at
,
893 (int (*) (CORE_ADDR
, struct static_tracepoint_marker
*))
895 de_fault (to_static_tracepoint_markers_by_strid
,
896 (VEC(static_tracepoint_marker_p
) * (*) (const char *))
900 /* Finally, position the target-stack beneath the squashed
901 "current_target". That way code looking for a non-inherited
902 target method can quickly and simply find it. */
903 current_target
.beneath
= target_stack
;
906 setup_target_debug ();
909 /* Push a new target type into the stack of the existing target accessors,
910 possibly superseding some of the existing accessors.
912 Rather than allow an empty stack, we always have the dummy target at
913 the bottom stratum, so we can call the function vectors without
917 push_target (struct target_ops
*t
)
919 struct target_ops
**cur
;
921 /* Check magic number. If wrong, it probably means someone changed
922 the struct definition, but not all the places that initialize one. */
923 if (t
->to_magic
!= OPS_MAGIC
)
925 fprintf_unfiltered (gdb_stderr
,
926 "Magic number of %s target struct wrong\n",
928 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
931 /* Find the proper stratum to install this target in. */
932 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
934 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
938 /* If there's already targets at this stratum, remove them. */
939 /* FIXME: cagney/2003-10-15: I think this should be popping all
940 targets to CUR, and not just those at this stratum level. */
941 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
943 /* There's already something at this stratum level. Close it,
944 and un-hook it from the stack. */
945 struct target_ops
*tmp
= (*cur
);
947 (*cur
) = (*cur
)->beneath
;
949 target_close (tmp
, 0);
952 /* We have removed all targets in our stratum, now add the new one. */
956 update_current_target ();
959 /* Remove a target_ops vector from the stack, wherever it may be.
960 Return how many times it was removed (0 or 1). */
963 unpush_target (struct target_ops
*t
)
965 struct target_ops
**cur
;
966 struct target_ops
*tmp
;
968 if (t
->to_stratum
== dummy_stratum
)
969 internal_error (__FILE__
, __LINE__
,
970 "Attempt to unpush the dummy target");
972 /* Look for the specified target. Note that we assume that a target
973 can only occur once in the target stack. */
975 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
982 return 0; /* Didn't find target_ops, quit now */
984 /* NOTE: cagney/2003-12-06: In '94 the close call was made
985 unconditional by moving it to before the above check that the
986 target was in the target stack (something about "Change the way
987 pushing and popping of targets work to support target overlays
988 and inheritance"). This doesn't make much sense - only open
989 targets should be closed. */
992 /* Unchain the target */
994 (*cur
) = (*cur
)->beneath
;
997 update_current_target ();
1005 target_close (target_stack
, 0); /* Let it clean up */
1006 if (unpush_target (target_stack
) == 1)
1009 fprintf_unfiltered (gdb_stderr
,
1010 "pop_target couldn't find target %s\n",
1011 current_target
.to_shortname
);
1012 internal_error (__FILE__
, __LINE__
,
1013 _("failed internal consistency check"));
1017 pop_all_targets_above (enum strata above_stratum
, int quitting
)
1019 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
1021 target_close (target_stack
, quitting
);
1022 if (!unpush_target (target_stack
))
1024 fprintf_unfiltered (gdb_stderr
,
1025 "pop_all_targets couldn't find target %s\n",
1026 target_stack
->to_shortname
);
1027 internal_error (__FILE__
, __LINE__
,
1028 _("failed internal consistency check"));
1035 pop_all_targets (int quitting
)
1037 pop_all_targets_above (dummy_stratum
, quitting
);
1040 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
1043 target_is_pushed (struct target_ops
*t
)
1045 struct target_ops
**cur
;
1047 /* Check magic number. If wrong, it probably means someone changed
1048 the struct definition, but not all the places that initialize one. */
1049 if (t
->to_magic
!= OPS_MAGIC
)
1051 fprintf_unfiltered (gdb_stderr
,
1052 "Magic number of %s target struct wrong\n",
1054 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1057 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1064 /* Using the objfile specified in OBJFILE, find the address for the
1065 current thread's thread-local storage with offset OFFSET. */
1067 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1069 volatile CORE_ADDR addr
= 0;
1070 struct target_ops
*target
;
1072 for (target
= current_target
.beneath
;
1074 target
= target
->beneath
)
1076 if (target
->to_get_thread_local_address
!= NULL
)
1081 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch
))
1083 ptid_t ptid
= inferior_ptid
;
1084 volatile struct gdb_exception ex
;
1086 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1090 /* Fetch the load module address for this objfile. */
1091 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch
,
1093 /* If it's 0, throw the appropriate exception. */
1095 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1096 _("TLS load module not found"));
1098 addr
= target
->to_get_thread_local_address (target
, ptid
, lm_addr
, offset
);
1100 /* If an error occurred, print TLS related messages here. Otherwise,
1101 throw the error to some higher catcher. */
1104 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1108 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1109 error (_("Cannot find thread-local variables in this thread library."));
1111 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1112 if (objfile_is_library
)
1113 error (_("Cannot find shared library `%s' in dynamic"
1114 " linker's load module list"), objfile
->name
);
1116 error (_("Cannot find executable file `%s' in dynamic"
1117 " linker's load module list"), objfile
->name
);
1119 case TLS_NOT_ALLOCATED_YET_ERROR
:
1120 if (objfile_is_library
)
1121 error (_("The inferior has not yet allocated storage for"
1122 " thread-local variables in\n"
1123 "the shared library `%s'\n"
1125 objfile
->name
, target_pid_to_str (ptid
));
1127 error (_("The inferior has not yet allocated storage for"
1128 " thread-local variables in\n"
1129 "the executable `%s'\n"
1131 objfile
->name
, target_pid_to_str (ptid
));
1133 case TLS_GENERIC_ERROR
:
1134 if (objfile_is_library
)
1135 error (_("Cannot find thread-local storage for %s, "
1136 "shared library %s:\n%s"),
1137 target_pid_to_str (ptid
),
1138 objfile
->name
, ex
.message
);
1140 error (_("Cannot find thread-local storage for %s, "
1141 "executable file %s:\n%s"),
1142 target_pid_to_str (ptid
),
1143 objfile
->name
, ex
.message
);
1146 throw_exception (ex
);
1151 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1152 TLS is an ABI-specific thing. But we don't do that yet. */
1154 error (_("Cannot find thread-local variables on this target"));
1160 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1162 /* target_read_string -- read a null terminated string, up to LEN bytes,
1163 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1164 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1165 is responsible for freeing it. Return the number of bytes successfully
1169 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1171 int tlen
, origlen
, offset
, i
;
1175 int buffer_allocated
;
1177 unsigned int nbytes_read
= 0;
1179 gdb_assert (string
);
1181 /* Small for testing. */
1182 buffer_allocated
= 4;
1183 buffer
= xmalloc (buffer_allocated
);
1190 tlen
= MIN (len
, 4 - (memaddr
& 3));
1191 offset
= memaddr
& 3;
1193 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1196 /* The transfer request might have crossed the boundary to an
1197 unallocated region of memory. Retry the transfer, requesting
1201 errcode
= target_read_memory (memaddr
, buf
, 1);
1206 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1210 bytes
= bufptr
- buffer
;
1211 buffer_allocated
*= 2;
1212 buffer
= xrealloc (buffer
, buffer_allocated
);
1213 bufptr
= buffer
+ bytes
;
1216 for (i
= 0; i
< tlen
; i
++)
1218 *bufptr
++ = buf
[i
+ offset
];
1219 if (buf
[i
+ offset
] == '\000')
1221 nbytes_read
+= i
+ 1;
1228 nbytes_read
+= tlen
;
1237 struct target_section_table
*
1238 target_get_section_table (struct target_ops
*target
)
1240 struct target_ops
*t
;
1243 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1245 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1246 if (t
->to_get_section_table
!= NULL
)
1247 return (*t
->to_get_section_table
) (t
);
1252 /* Find a section containing ADDR. */
1254 struct target_section
*
1255 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1257 struct target_section_table
*table
= target_get_section_table (target
);
1258 struct target_section
*secp
;
1263 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1265 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1271 /* Perform a partial memory transfer.
1272 For docs see target.h, to_xfer_partial. */
1275 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1276 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1281 struct mem_region
*region
;
1282 struct inferior
*inf
;
1284 /* Zero length requests are ok and require no work. */
1288 /* For accesses to unmapped overlay sections, read directly from
1289 files. Must do this first, as MEMADDR may need adjustment. */
1290 if (readbuf
!= NULL
&& overlay_debugging
)
1292 struct obj_section
*section
= find_pc_overlay (memaddr
);
1294 if (pc_in_unmapped_range (memaddr
, section
))
1296 struct target_section_table
*table
1297 = target_get_section_table (ops
);
1298 const char *section_name
= section
->the_bfd_section
->name
;
1300 memaddr
= overlay_mapped_address (memaddr
, section
);
1301 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1304 table
->sections_end
,
1309 /* Try the executable files, if "trust-readonly-sections" is set. */
1310 if (readbuf
!= NULL
&& trust_readonly
)
1312 struct target_section
*secp
;
1313 struct target_section_table
*table
;
1315 secp
= target_section_by_addr (ops
, memaddr
);
1317 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1320 table
= target_get_section_table (ops
);
1321 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1324 table
->sections_end
,
1329 /* Try GDB's internal data cache. */
1330 region
= lookup_mem_region (memaddr
);
1331 /* region->hi == 0 means there's no upper bound. */
1332 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1335 reg_len
= region
->hi
- memaddr
;
1337 switch (region
->attrib
.mode
)
1340 if (writebuf
!= NULL
)
1345 if (readbuf
!= NULL
)
1350 /* We only support writing to flash during "load" for now. */
1351 if (writebuf
!= NULL
)
1352 error (_("Writing to flash memory forbidden in this context"));
1359 if (!ptid_equal (inferior_ptid
, null_ptid
))
1360 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1365 /* The dcache reads whole cache lines; that doesn't play well
1366 with reading from a trace buffer, because reading outside of
1367 the collected memory range fails. */
1368 && get_traceframe_number () == -1
1369 && (region
->attrib
.cache
1370 || (stack_cache_enabled_p
&& object
== TARGET_OBJECT_STACK_MEMORY
)))
1372 if (readbuf
!= NULL
)
1373 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
, readbuf
,
1376 /* FIXME drow/2006-08-09: If we're going to preserve const
1377 correctness dcache_xfer_memory should take readbuf and
1379 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
,
1386 if (readbuf
&& !show_memory_breakpoints
)
1387 breakpoint_restore_shadows (readbuf
, memaddr
, reg_len
);
1392 /* If none of those methods found the memory we wanted, fall back
1393 to a target partial transfer. Normally a single call to
1394 to_xfer_partial is enough; if it doesn't recognize an object
1395 it will call the to_xfer_partial of the next target down.
1396 But for memory this won't do. Memory is the only target
1397 object which can be read from more than one valid target.
1398 A core file, for instance, could have some of memory but
1399 delegate other bits to the target below it. So, we must
1400 manually try all targets. */
1404 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1405 readbuf
, writebuf
, memaddr
, reg_len
);
1409 /* We want to continue past core files to executables, but not
1410 past a running target's memory. */
1411 if (ops
->to_has_all_memory (ops
))
1416 while (ops
!= NULL
);
1418 if (readbuf
&& !show_memory_breakpoints
)
1419 breakpoint_restore_shadows (readbuf
, memaddr
, reg_len
);
1421 /* Make sure the cache gets updated no matter what - if we are writing
1422 to the stack. Even if this write is not tagged as such, we still need
1423 to update the cache. */
1428 && !region
->attrib
.cache
1429 && stack_cache_enabled_p
1430 && object
!= TARGET_OBJECT_STACK_MEMORY
)
1432 dcache_update (target_dcache
, memaddr
, (void *) writebuf
, res
);
1435 /* If we still haven't got anything, return the last error. We
1441 restore_show_memory_breakpoints (void *arg
)
1443 show_memory_breakpoints
= (uintptr_t) arg
;
1447 make_show_memory_breakpoints_cleanup (int show
)
1449 int current
= show_memory_breakpoints
;
1451 show_memory_breakpoints
= show
;
1452 return make_cleanup (restore_show_memory_breakpoints
,
1453 (void *) (uintptr_t) current
);
1456 /* For docs see target.h, to_xfer_partial. */
1459 target_xfer_partial (struct target_ops
*ops
,
1460 enum target_object object
, const char *annex
,
1461 void *readbuf
, const void *writebuf
,
1462 ULONGEST offset
, LONGEST len
)
1466 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1468 if (writebuf
&& !may_write_memory
)
1469 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1470 core_addr_to_string_nz (offset
), plongest (len
));
1472 /* If this is a memory transfer, let the memory-specific code
1473 have a look at it instead. Memory transfers are more
1475 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
)
1476 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1477 writebuf
, offset
, len
);
1480 enum target_object raw_object
= object
;
1482 /* If this is a raw memory transfer, request the normal
1483 memory object from other layers. */
1484 if (raw_object
== TARGET_OBJECT_RAW_MEMORY
)
1485 raw_object
= TARGET_OBJECT_MEMORY
;
1487 retval
= ops
->to_xfer_partial (ops
, raw_object
, annex
, readbuf
,
1488 writebuf
, offset
, len
);
1493 const unsigned char *myaddr
= NULL
;
1495 fprintf_unfiltered (gdb_stdlog
,
1496 "%s:target_xfer_partial (%d, %s, %s, %s, %s, %s) = %s",
1499 (annex
? annex
: "(null)"),
1500 host_address_to_string (readbuf
),
1501 host_address_to_string (writebuf
),
1502 core_addr_to_string_nz (offset
),
1503 plongest (len
), plongest (retval
));
1509 if (retval
> 0 && myaddr
!= NULL
)
1513 fputs_unfiltered (", bytes =", gdb_stdlog
);
1514 for (i
= 0; i
< retval
; i
++)
1516 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1518 if (targetdebug
< 2 && i
> 0)
1520 fprintf_unfiltered (gdb_stdlog
, " ...");
1523 fprintf_unfiltered (gdb_stdlog
, "\n");
1526 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1530 fputc_unfiltered ('\n', gdb_stdlog
);
1535 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
1536 GDB's memory at MYADDR. Returns either 0 for success or an errno value
1537 if any error occurs.
1539 If an error occurs, no guarantee is made about the contents of the data at
1540 MYADDR. In particular, the caller should not depend upon partial reads
1541 filling the buffer with good data. There is no way for the caller to know
1542 how much good data might have been transfered anyway. Callers that can
1543 deal with partial reads should call target_read (which will retry until
1544 it makes no progress, and then return how much was transferred). */
1547 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
1549 /* Dispatch to the topmost target, not the flattened current_target.
1550 Memory accesses check target->to_has_(all_)memory, and the
1551 flattened target doesn't inherit those. */
1552 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1553 myaddr
, memaddr
, len
) == len
)
1559 /* Like target_read_memory, but specify explicitly that this is a read from
1560 the target's stack. This may trigger different cache behavior. */
1563 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
1565 /* Dispatch to the topmost target, not the flattened current_target.
1566 Memory accesses check target->to_has_(all_)memory, and the
1567 flattened target doesn't inherit those. */
1569 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1570 myaddr
, memaddr
, len
) == len
)
1576 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1577 Returns either 0 for success or an errno value if any error occurs.
1578 If an error occurs, no guarantee is made about how much data got written.
1579 Callers that can deal with partial writes should call target_write. */
1582 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
1584 /* Dispatch to the topmost target, not the flattened current_target.
1585 Memory accesses check target->to_has_(all_)memory, and the
1586 flattened target doesn't inherit those. */
1587 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1588 myaddr
, memaddr
, len
) == len
)
1594 /* Fetch the target's memory map. */
1597 target_memory_map (void)
1599 VEC(mem_region_s
) *result
;
1600 struct mem_region
*last_one
, *this_one
;
1602 struct target_ops
*t
;
1605 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1607 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1608 if (t
->to_memory_map
!= NULL
)
1614 result
= t
->to_memory_map (t
);
1618 qsort (VEC_address (mem_region_s
, result
),
1619 VEC_length (mem_region_s
, result
),
1620 sizeof (struct mem_region
), mem_region_cmp
);
1622 /* Check that regions do not overlap. Simultaneously assign
1623 a numbering for the "mem" commands to use to refer to
1626 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1628 this_one
->number
= ix
;
1630 if (last_one
&& last_one
->hi
> this_one
->lo
)
1632 warning (_("Overlapping regions in memory map: ignoring"));
1633 VEC_free (mem_region_s
, result
);
1636 last_one
= this_one
;
1643 target_flash_erase (ULONGEST address
, LONGEST length
)
1645 struct target_ops
*t
;
1647 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1648 if (t
->to_flash_erase
!= NULL
)
1651 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1652 hex_string (address
), phex (length
, 0));
1653 t
->to_flash_erase (t
, address
, length
);
1661 target_flash_done (void)
1663 struct target_ops
*t
;
1665 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1666 if (t
->to_flash_done
!= NULL
)
1669 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1670 t
->to_flash_done (t
);
1678 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1679 struct cmd_list_element
*c
, const char *value
)
1681 fprintf_filtered (file
, _("\
1682 Mode for reading from readonly sections is %s.\n"),
1686 /* More generic transfers. */
1689 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1690 const char *annex
, gdb_byte
*readbuf
,
1691 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1693 if (object
== TARGET_OBJECT_MEMORY
1694 && ops
->deprecated_xfer_memory
!= NULL
)
1695 /* If available, fall back to the target's
1696 "deprecated_xfer_memory" method. */
1701 if (writebuf
!= NULL
)
1703 void *buffer
= xmalloc (len
);
1704 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1706 memcpy (buffer
, writebuf
, len
);
1707 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1708 1/*write*/, NULL
, ops
);
1709 do_cleanups (cleanup
);
1711 if (readbuf
!= NULL
)
1712 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1713 0/*read*/, NULL
, ops
);
1716 else if (xfered
== 0 && errno
== 0)
1717 /* "deprecated_xfer_memory" uses 0, cross checked against
1718 ERRNO as one indication of an error. */
1723 else if (ops
->beneath
!= NULL
)
1724 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1725 readbuf
, writebuf
, offset
, len
);
1730 /* The xfer_partial handler for the topmost target. Unlike the default,
1731 it does not need to handle memory specially; it just passes all
1732 requests down the stack. */
1735 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1736 const char *annex
, gdb_byte
*readbuf
,
1737 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1739 if (ops
->beneath
!= NULL
)
1740 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1741 readbuf
, writebuf
, offset
, len
);
1746 /* Target vector read/write partial wrapper functions. */
1749 target_read_partial (struct target_ops
*ops
,
1750 enum target_object object
,
1751 const char *annex
, gdb_byte
*buf
,
1752 ULONGEST offset
, LONGEST len
)
1754 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
1758 target_write_partial (struct target_ops
*ops
,
1759 enum target_object object
,
1760 const char *annex
, const gdb_byte
*buf
,
1761 ULONGEST offset
, LONGEST len
)
1763 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
1766 /* Wrappers to perform the full transfer. */
1768 /* For docs on target_read see target.h. */
1771 target_read (struct target_ops
*ops
,
1772 enum target_object object
,
1773 const char *annex
, gdb_byte
*buf
,
1774 ULONGEST offset
, LONGEST len
)
1778 while (xfered
< len
)
1780 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
1781 (gdb_byte
*) buf
+ xfered
,
1782 offset
+ xfered
, len
- xfered
);
1784 /* Call an observer, notifying them of the xfer progress? */
1796 target_read_until_error (struct target_ops
*ops
,
1797 enum target_object object
,
1798 const char *annex
, gdb_byte
*buf
,
1799 ULONGEST offset
, LONGEST len
)
1803 while (xfered
< len
)
1805 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
1806 (gdb_byte
*) buf
+ xfered
,
1807 offset
+ xfered
, len
- xfered
);
1809 /* Call an observer, notifying them of the xfer progress? */
1814 /* We've got an error. Try to read in smaller blocks. */
1815 ULONGEST start
= offset
+ xfered
;
1816 ULONGEST remaining
= len
- xfered
;
1819 /* If an attempt was made to read a random memory address,
1820 it's likely that the very first byte is not accessible.
1821 Try reading the first byte, to avoid doing log N tries
1823 xfer
= target_read_partial (ops
, object
, annex
,
1824 (gdb_byte
*) buf
+ xfered
, start
, 1);
1833 xfer
= target_read_partial (ops
, object
, annex
,
1834 (gdb_byte
*) buf
+ xfered
,
1844 /* We have successfully read the first half. So, the
1845 error must be in the second half. Adjust start and
1846 remaining to point at the second half. */
1862 /* An alternative to target_write with progress callbacks. */
1865 target_write_with_progress (struct target_ops
*ops
,
1866 enum target_object object
,
1867 const char *annex
, const gdb_byte
*buf
,
1868 ULONGEST offset
, LONGEST len
,
1869 void (*progress
) (ULONGEST
, void *), void *baton
)
1873 /* Give the progress callback a chance to set up. */
1875 (*progress
) (0, baton
);
1877 while (xfered
< len
)
1879 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
1880 (gdb_byte
*) buf
+ xfered
,
1881 offset
+ xfered
, len
- xfered
);
1889 (*progress
) (xfer
, baton
);
1897 /* For docs on target_write see target.h. */
1900 target_write (struct target_ops
*ops
,
1901 enum target_object object
,
1902 const char *annex
, const gdb_byte
*buf
,
1903 ULONGEST offset
, LONGEST len
)
1905 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
1909 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
1910 the size of the transferred data. PADDING additional bytes are
1911 available in *BUF_P. This is a helper function for
1912 target_read_alloc; see the declaration of that function for more
1916 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
1917 const char *annex
, gdb_byte
**buf_p
, int padding
)
1919 size_t buf_alloc
, buf_pos
;
1923 /* This function does not have a length parameter; it reads the
1924 entire OBJECT). Also, it doesn't support objects fetched partly
1925 from one target and partly from another (in a different stratum,
1926 e.g. a core file and an executable). Both reasons make it
1927 unsuitable for reading memory. */
1928 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
1930 /* Start by reading up to 4K at a time. The target will throttle
1931 this number down if necessary. */
1933 buf
= xmalloc (buf_alloc
);
1937 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
1938 buf_pos
, buf_alloc
- buf_pos
- padding
);
1941 /* An error occurred. */
1947 /* Read all there was. */
1957 /* If the buffer is filling up, expand it. */
1958 if (buf_alloc
< buf_pos
* 2)
1961 buf
= xrealloc (buf
, buf_alloc
);
1968 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
1969 the size of the transferred data. See the declaration in "target.h"
1970 function for more information about the return value. */
1973 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
1974 const char *annex
, gdb_byte
**buf_p
)
1976 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
1979 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
1980 returned as a string, allocated using xmalloc. If an error occurs
1981 or the transfer is unsupported, NULL is returned. Empty objects
1982 are returned as allocated but empty strings. A warning is issued
1983 if the result contains any embedded NUL bytes. */
1986 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
1990 LONGEST transferred
;
1992 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
1994 if (transferred
< 0)
1997 if (transferred
== 0)
1998 return xstrdup ("");
2000 buffer
[transferred
] = 0;
2001 if (strlen (buffer
) < transferred
)
2002 warning (_("target object %d, annex %s, "
2003 "contained unexpected null characters"),
2004 (int) object
, annex
? annex
: "(none)");
2006 return (char *) buffer
;
2009 /* Memory transfer methods. */
2012 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2015 /* This method is used to read from an alternate, non-current
2016 target. This read must bypass the overlay support (as symbols
2017 don't match this target), and GDB's internal cache (wrong cache
2018 for this target). */
2019 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2021 memory_error (EIO
, addr
);
2025 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2026 int len
, enum bfd_endian byte_order
)
2028 gdb_byte buf
[sizeof (ULONGEST
)];
2030 gdb_assert (len
<= sizeof (buf
));
2031 get_target_memory (ops
, addr
, buf
, len
);
2032 return extract_unsigned_integer (buf
, len
, byte_order
);
2036 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2037 struct bp_target_info
*bp_tgt
)
2039 if (!may_insert_breakpoints
)
2041 warning (_("May not insert breakpoints"));
2045 return (*current_target
.to_insert_breakpoint
) (gdbarch
, bp_tgt
);
2049 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2050 struct bp_target_info
*bp_tgt
)
2052 /* This is kind of a weird case to handle, but the permission might
2053 have been changed after breakpoints were inserted - in which case
2054 we should just take the user literally and assume that any
2055 breakpoints should be left in place. */
2056 if (!may_insert_breakpoints
)
2058 warning (_("May not remove breakpoints"));
2062 return (*current_target
.to_remove_breakpoint
) (gdbarch
, bp_tgt
);
2066 target_info (char *args
, int from_tty
)
2068 struct target_ops
*t
;
2069 int has_all_mem
= 0;
2071 if (symfile_objfile
!= NULL
)
2072 printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile
->name
);
2074 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2076 if (!(*t
->to_has_memory
) (t
))
2079 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2082 printf_unfiltered (_("\tWhile running this, GDB does not access memory from...\n"));
2083 printf_unfiltered ("%s:\n", t
->to_longname
);
2084 (t
->to_files_info
) (t
);
2085 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2089 /* This function is called before any new inferior is created, e.g.
2090 by running a program, attaching, or connecting to a target.
2091 It cleans up any state from previous invocations which might
2092 change between runs. This is a subset of what target_preopen
2093 resets (things which might change between targets). */
2096 target_pre_inferior (int from_tty
)
2098 /* Clear out solib state. Otherwise the solib state of the previous
2099 inferior might have survived and is entirely wrong for the new
2100 target. This has been observed on GNU/Linux using glibc 2.3. How
2112 Cannot access memory at address 0xdeadbeef
2115 /* In some OSs, the shared library list is the same/global/shared
2116 across inferiors. If code is shared between processes, so are
2117 memory regions and features. */
2118 if (!gdbarch_has_global_solist (target_gdbarch
))
2120 no_shared_libraries (NULL
, from_tty
);
2122 invalidate_target_mem_regions ();
2124 target_clear_description ();
2128 /* Callback for iterate_over_inferiors. Gets rid of the given
2132 dispose_inferior (struct inferior
*inf
, void *args
)
2134 struct thread_info
*thread
;
2136 thread
= any_thread_of_process (inf
->pid
);
2139 switch_to_thread (thread
->ptid
);
2141 /* Core inferiors actually should be detached, not killed. */
2142 if (target_has_execution
)
2145 target_detach (NULL
, 0);
2151 /* This is to be called by the open routine before it does
2155 target_preopen (int from_tty
)
2159 if (have_inferiors ())
2162 || !have_live_inferiors ()
2163 || query (_("A program is being debugged already. Kill it? ")))
2164 iterate_over_inferiors (dispose_inferior
, NULL
);
2166 error (_("Program not killed."));
2169 /* Calling target_kill may remove the target from the stack. But if
2170 it doesn't (which seems like a win for UDI), remove it now. */
2171 /* Leave the exec target, though. The user may be switching from a
2172 live process to a core of the same program. */
2173 pop_all_targets_above (file_stratum
, 0);
2175 target_pre_inferior (from_tty
);
2178 /* Detach a target after doing deferred register stores. */
2181 target_detach (char *args
, int from_tty
)
2183 struct target_ops
* t
;
2185 if (gdbarch_has_global_breakpoints (target_gdbarch
))
2186 /* Don't remove global breakpoints here. They're removed on
2187 disconnection from the target. */
2190 /* If we're in breakpoints-always-inserted mode, have to remove
2191 them before detaching. */
2192 remove_breakpoints_pid (PIDGET (inferior_ptid
));
2194 prepare_for_detach ();
2196 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2198 if (t
->to_detach
!= NULL
)
2200 t
->to_detach (t
, args
, from_tty
);
2202 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2208 internal_error (__FILE__
, __LINE__
, "could not find a target to detach");
2212 target_disconnect (char *args
, int from_tty
)
2214 struct target_ops
*t
;
2216 /* If we're in breakpoints-always-inserted mode or if breakpoints
2217 are global across processes, we have to remove them before
2219 remove_breakpoints ();
2221 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2222 if (t
->to_disconnect
!= NULL
)
2225 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2227 t
->to_disconnect (t
, args
, from_tty
);
2235 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2237 struct target_ops
*t
;
2239 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2241 if (t
->to_wait
!= NULL
)
2243 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2247 char *status_string
;
2249 status_string
= target_waitstatus_to_string (status
);
2250 fprintf_unfiltered (gdb_stdlog
,
2251 "target_wait (%d, status) = %d, %s\n",
2252 PIDGET (ptid
), PIDGET (retval
),
2254 xfree (status_string
);
2265 target_pid_to_str (ptid_t ptid
)
2267 struct target_ops
*t
;
2269 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2271 if (t
->to_pid_to_str
!= NULL
)
2272 return (*t
->to_pid_to_str
) (t
, ptid
);
2275 return normal_pid_to_str (ptid
);
2279 target_resume (ptid_t ptid
, int step
, enum target_signal signal
)
2281 struct target_ops
*t
;
2283 target_dcache_invalidate ();
2285 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2287 if (t
->to_resume
!= NULL
)
2289 t
->to_resume (t
, ptid
, step
, signal
);
2291 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2293 step
? "step" : "continue",
2294 target_signal_to_name (signal
));
2296 registers_changed_ptid (ptid
);
2297 set_executing (ptid
, 1);
2298 set_running (ptid
, 1);
2299 clear_inline_frame_state (ptid
);
2306 /* Look through the list of possible targets for a target that can
2310 target_follow_fork (int follow_child
)
2312 struct target_ops
*t
;
2314 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2316 if (t
->to_follow_fork
!= NULL
)
2318 int retval
= t
->to_follow_fork (t
, follow_child
);
2321 fprintf_unfiltered (gdb_stdlog
, "target_follow_fork (%d) = %d\n",
2322 follow_child
, retval
);
2327 /* Some target returned a fork event, but did not know how to follow it. */
2328 internal_error (__FILE__
, __LINE__
,
2329 "could not find a target to follow fork");
2333 target_mourn_inferior (void)
2335 struct target_ops
*t
;
2337 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2339 if (t
->to_mourn_inferior
!= NULL
)
2341 t
->to_mourn_inferior (t
);
2343 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2345 /* We no longer need to keep handles on any of the object files.
2346 Make sure to release them to avoid unnecessarily locking any
2347 of them while we're not actually debugging. */
2348 bfd_cache_close_all ();
2354 internal_error (__FILE__
, __LINE__
,
2355 "could not find a target to follow mourn inferior");
2358 /* Look for a target which can describe architectural features, starting
2359 from TARGET. If we find one, return its description. */
2361 const struct target_desc
*
2362 target_read_description (struct target_ops
*target
)
2364 struct target_ops
*t
;
2366 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2367 if (t
->to_read_description
!= NULL
)
2369 const struct target_desc
*tdesc
;
2371 tdesc
= t
->to_read_description (t
);
2379 /* The default implementation of to_search_memory.
2380 This implements a basic search of memory, reading target memory and
2381 performing the search here (as opposed to performing the search in on the
2382 target side with, for example, gdbserver). */
2385 simple_search_memory (struct target_ops
*ops
,
2386 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2387 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2388 CORE_ADDR
*found_addrp
)
2390 /* NOTE: also defined in find.c testcase. */
2391 #define SEARCH_CHUNK_SIZE 16000
2392 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2393 /* Buffer to hold memory contents for searching. */
2394 gdb_byte
*search_buf
;
2395 unsigned search_buf_size
;
2396 struct cleanup
*old_cleanups
;
2398 search_buf_size
= chunk_size
+ pattern_len
- 1;
2400 /* No point in trying to allocate a buffer larger than the search space. */
2401 if (search_space_len
< search_buf_size
)
2402 search_buf_size
= search_space_len
;
2404 search_buf
= malloc (search_buf_size
);
2405 if (search_buf
== NULL
)
2406 error (_("Unable to allocate memory to perform the search."));
2407 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2409 /* Prime the search buffer. */
2411 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2412 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2414 warning (_("Unable to access target memory at %s, halting search."),
2415 hex_string (start_addr
));
2416 do_cleanups (old_cleanups
);
2420 /* Perform the search.
2422 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2423 When we've scanned N bytes we copy the trailing bytes to the start and
2424 read in another N bytes. */
2426 while (search_space_len
>= pattern_len
)
2428 gdb_byte
*found_ptr
;
2429 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2431 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2432 pattern
, pattern_len
);
2434 if (found_ptr
!= NULL
)
2436 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2438 *found_addrp
= found_addr
;
2439 do_cleanups (old_cleanups
);
2443 /* Not found in this chunk, skip to next chunk. */
2445 /* Don't let search_space_len wrap here, it's unsigned. */
2446 if (search_space_len
>= chunk_size
)
2447 search_space_len
-= chunk_size
;
2449 search_space_len
= 0;
2451 if (search_space_len
>= pattern_len
)
2453 unsigned keep_len
= search_buf_size
- chunk_size
;
2454 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2457 /* Copy the trailing part of the previous iteration to the front
2458 of the buffer for the next iteration. */
2459 gdb_assert (keep_len
== pattern_len
- 1);
2460 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2462 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2464 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2465 search_buf
+ keep_len
, read_addr
,
2466 nr_to_read
) != nr_to_read
)
2468 warning (_("Unable to access target memory at %s, halting search."),
2469 hex_string (read_addr
));
2470 do_cleanups (old_cleanups
);
2474 start_addr
+= chunk_size
;
2480 do_cleanups (old_cleanups
);
2484 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2485 sequence of bytes in PATTERN with length PATTERN_LEN.
2487 The result is 1 if found, 0 if not found, and -1 if there was an error
2488 requiring halting of the search (e.g. memory read error).
2489 If the pattern is found the address is recorded in FOUND_ADDRP. */
2492 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2493 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2494 CORE_ADDR
*found_addrp
)
2496 struct target_ops
*t
;
2499 /* We don't use INHERIT to set current_target.to_search_memory,
2500 so we have to scan the target stack and handle targetdebug
2504 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2505 hex_string (start_addr
));
2507 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2508 if (t
->to_search_memory
!= NULL
)
2513 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2514 pattern
, pattern_len
, found_addrp
);
2518 /* If a special version of to_search_memory isn't available, use the
2520 found
= simple_search_memory (current_target
.beneath
,
2521 start_addr
, search_space_len
,
2522 pattern
, pattern_len
, found_addrp
);
2526 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2531 /* Look through the currently pushed targets. If none of them will
2532 be able to restart the currently running process, issue an error
2536 target_require_runnable (void)
2538 struct target_ops
*t
;
2540 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2542 /* If this target knows how to create a new program, then
2543 assume we will still be able to after killing the current
2544 one. Either killing and mourning will not pop T, or else
2545 find_default_run_target will find it again. */
2546 if (t
->to_create_inferior
!= NULL
)
2549 /* Do not worry about thread_stratum targets that can not
2550 create inferiors. Assume they will be pushed again if
2551 necessary, and continue to the process_stratum. */
2552 if (t
->to_stratum
== thread_stratum
2553 || t
->to_stratum
== arch_stratum
)
2557 The \"%s\" target does not support \"run\". Try \"help target\" or \"continue\"."),
2561 /* This function is only called if the target is running. In that
2562 case there should have been a process_stratum target and it
2563 should either know how to create inferiors, or not... */
2564 internal_error (__FILE__
, __LINE__
, "No targets found");
2567 /* Look through the list of possible targets for a target that can
2568 execute a run or attach command without any other data. This is
2569 used to locate the default process stratum.
2571 If DO_MESG is not NULL, the result is always valid (error() is
2572 called for errors); else, return NULL on error. */
2574 static struct target_ops
*
2575 find_default_run_target (char *do_mesg
)
2577 struct target_ops
**t
;
2578 struct target_ops
*runable
= NULL
;
2583 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2586 if ((*t
)->to_can_run
&& target_can_run (*t
))
2596 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
2605 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
2607 struct target_ops
*t
;
2609 t
= find_default_run_target ("attach");
2610 (t
->to_attach
) (t
, args
, from_tty
);
2615 find_default_create_inferior (struct target_ops
*ops
,
2616 char *exec_file
, char *allargs
, char **env
,
2619 struct target_ops
*t
;
2621 t
= find_default_run_target ("run");
2622 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
2627 find_default_can_async_p (void)
2629 struct target_ops
*t
;
2631 /* This may be called before the target is pushed on the stack;
2632 look for the default process stratum. If there's none, gdb isn't
2633 configured with a native debugger, and target remote isn't
2635 t
= find_default_run_target (NULL
);
2636 if (t
&& t
->to_can_async_p
)
2637 return (t
->to_can_async_p
) ();
2642 find_default_is_async_p (void)
2644 struct target_ops
*t
;
2646 /* This may be called before the target is pushed on the stack;
2647 look for the default process stratum. If there's none, gdb isn't
2648 configured with a native debugger, and target remote isn't
2650 t
= find_default_run_target (NULL
);
2651 if (t
&& t
->to_is_async_p
)
2652 return (t
->to_is_async_p
) ();
2657 find_default_supports_non_stop (void)
2659 struct target_ops
*t
;
2661 t
= find_default_run_target (NULL
);
2662 if (t
&& t
->to_supports_non_stop
)
2663 return (t
->to_supports_non_stop
) ();
2668 target_supports_non_stop (void)
2670 struct target_ops
*t
;
2672 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
2673 if (t
->to_supports_non_stop
)
2674 return t
->to_supports_non_stop ();
2681 target_get_osdata (const char *type
)
2683 struct target_ops
*t
;
2685 /* If we're already connected to something that can get us OS
2686 related data, use it. Otherwise, try using the native
2688 if (current_target
.to_stratum
>= process_stratum
)
2689 t
= current_target
.beneath
;
2691 t
= find_default_run_target ("get OS data");
2696 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
2699 /* Determine the current address space of thread PTID. */
2701 struct address_space
*
2702 target_thread_address_space (ptid_t ptid
)
2704 struct address_space
*aspace
;
2705 struct inferior
*inf
;
2706 struct target_ops
*t
;
2708 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2710 if (t
->to_thread_address_space
!= NULL
)
2712 aspace
= t
->to_thread_address_space (t
, ptid
);
2713 gdb_assert (aspace
);
2716 fprintf_unfiltered (gdb_stdlog
,
2717 "target_thread_address_space (%s) = %d\n",
2718 target_pid_to_str (ptid
),
2719 address_space_num (aspace
));
2724 /* Fall-back to the "main" address space of the inferior. */
2725 inf
= find_inferior_pid (ptid_get_pid (ptid
));
2727 if (inf
== NULL
|| inf
->aspace
== NULL
)
2728 internal_error (__FILE__
, __LINE__
, "\
2729 Can't determine the current address space of thread %s\n",
2730 target_pid_to_str (ptid
));
2736 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
2738 return (len
<= gdbarch_ptr_bit (target_gdbarch
) / TARGET_CHAR_BIT
);
2742 default_watchpoint_addr_within_range (struct target_ops
*target
,
2744 CORE_ADDR start
, int length
)
2746 return addr
>= start
&& addr
< start
+ length
;
2749 static struct gdbarch
*
2750 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
2752 return target_gdbarch
;
2768 return_minus_one (void)
2773 /* Find a single runnable target in the stack and return it. If for
2774 some reason there is more than one, return NULL. */
2777 find_run_target (void)
2779 struct target_ops
**t
;
2780 struct target_ops
*runable
= NULL
;
2785 for (t
= target_structs
; t
< target_structs
+ target_struct_size
; ++t
)
2787 if ((*t
)->to_can_run
&& target_can_run (*t
))
2794 return (count
== 1 ? runable
: NULL
);
2798 * Find the next target down the stack from the specified target.
2802 find_target_beneath (struct target_ops
*t
)
2808 /* The inferior process has died. Long live the inferior! */
2811 generic_mourn_inferior (void)
2815 ptid
= inferior_ptid
;
2816 inferior_ptid
= null_ptid
;
2818 if (!ptid_equal (ptid
, null_ptid
))
2820 int pid
= ptid_get_pid (ptid
);
2821 exit_inferior (pid
);
2824 breakpoint_init_inferior (inf_exited
);
2825 registers_changed ();
2827 reopen_exec_file ();
2828 reinit_frame_cache ();
2830 if (deprecated_detach_hook
)
2831 deprecated_detach_hook ();
2834 /* Helper function for child_wait and the derivatives of child_wait.
2835 HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
2836 translation of that in OURSTATUS. */
2838 store_waitstatus (struct target_waitstatus
*ourstatus
, int hoststatus
)
2840 if (WIFEXITED (hoststatus
))
2842 ourstatus
->kind
= TARGET_WAITKIND_EXITED
;
2843 ourstatus
->value
.integer
= WEXITSTATUS (hoststatus
);
2845 else if (!WIFSTOPPED (hoststatus
))
2847 ourstatus
->kind
= TARGET_WAITKIND_SIGNALLED
;
2848 ourstatus
->value
.sig
= target_signal_from_host (WTERMSIG (hoststatus
));
2852 ourstatus
->kind
= TARGET_WAITKIND_STOPPED
;
2853 ourstatus
->value
.sig
= target_signal_from_host (WSTOPSIG (hoststatus
));
2857 /* Convert a normal process ID to a string. Returns the string in a
2861 normal_pid_to_str (ptid_t ptid
)
2863 static char buf
[32];
2865 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
2870 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
2872 return normal_pid_to_str (ptid
);
2875 /* Error-catcher for target_find_memory_regions. */
2877 dummy_find_memory_regions (int (*ignore1
) (), void *ignore2
)
2879 error (_("Command not implemented for this target."));
2883 /* Error-catcher for target_make_corefile_notes. */
2885 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
2887 error (_("Command not implemented for this target."));
2891 /* Error-catcher for target_get_bookmark. */
2893 dummy_get_bookmark (char *ignore1
, int ignore2
)
2899 /* Error-catcher for target_goto_bookmark. */
2901 dummy_goto_bookmark (gdb_byte
*ignore
, int from_tty
)
2906 /* Set up the handful of non-empty slots needed by the dummy target
2910 init_dummy_target (void)
2912 dummy_target
.to_shortname
= "None";
2913 dummy_target
.to_longname
= "None";
2914 dummy_target
.to_doc
= "";
2915 dummy_target
.to_attach
= find_default_attach
;
2916 dummy_target
.to_detach
=
2917 (void (*)(struct target_ops
*, char *, int))target_ignore
;
2918 dummy_target
.to_create_inferior
= find_default_create_inferior
;
2919 dummy_target
.to_can_async_p
= find_default_can_async_p
;
2920 dummy_target
.to_is_async_p
= find_default_is_async_p
;
2921 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
2922 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
2923 dummy_target
.to_stratum
= dummy_stratum
;
2924 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
2925 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
2926 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
2927 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
2928 dummy_target
.to_xfer_partial
= default_xfer_partial
;
2929 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
2930 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
2931 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
2932 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
2933 dummy_target
.to_has_execution
= (int (*) (struct target_ops
*)) return_zero
;
2934 dummy_target
.to_stopped_by_watchpoint
= return_zero
;
2935 dummy_target
.to_stopped_data_address
=
2936 (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
;
2937 dummy_target
.to_magic
= OPS_MAGIC
;
2941 debug_to_open (char *args
, int from_tty
)
2943 debug_target
.to_open (args
, from_tty
);
2945 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
2949 target_close (struct target_ops
*targ
, int quitting
)
2951 if (targ
->to_xclose
!= NULL
)
2952 targ
->to_xclose (targ
, quitting
);
2953 else if (targ
->to_close
!= NULL
)
2954 targ
->to_close (quitting
);
2957 fprintf_unfiltered (gdb_stdlog
, "target_close (%d)\n", quitting
);
2961 target_attach (char *args
, int from_tty
)
2963 struct target_ops
*t
;
2965 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2967 if (t
->to_attach
!= NULL
)
2969 t
->to_attach (t
, args
, from_tty
);
2971 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
2977 internal_error (__FILE__
, __LINE__
,
2978 "could not find a target to attach");
2982 target_thread_alive (ptid_t ptid
)
2984 struct target_ops
*t
;
2986 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2988 if (t
->to_thread_alive
!= NULL
)
2992 retval
= t
->to_thread_alive (t
, ptid
);
2994 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
2995 PIDGET (ptid
), retval
);
3005 target_find_new_threads (void)
3007 struct target_ops
*t
;
3009 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3011 if (t
->to_find_new_threads
!= NULL
)
3013 t
->to_find_new_threads (t
);
3015 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3023 target_stop (ptid_t ptid
)
3027 warning (_("May not interrupt or stop the target, ignoring attempt"));
3031 (*current_target
.to_stop
) (ptid
);
3035 debug_to_post_attach (int pid
)
3037 debug_target
.to_post_attach (pid
);
3039 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3042 /* Return a pretty printed form of target_waitstatus.
3043 Space for the result is malloc'd, caller must free. */
3046 target_waitstatus_to_string (const struct target_waitstatus
*ws
)
3048 const char *kind_str
= "status->kind = ";
3052 case TARGET_WAITKIND_EXITED
:
3053 return xstrprintf ("%sexited, status = %d",
3054 kind_str
, ws
->value
.integer
);
3055 case TARGET_WAITKIND_STOPPED
:
3056 return xstrprintf ("%sstopped, signal = %s",
3057 kind_str
, target_signal_to_name (ws
->value
.sig
));
3058 case TARGET_WAITKIND_SIGNALLED
:
3059 return xstrprintf ("%ssignalled, signal = %s",
3060 kind_str
, target_signal_to_name (ws
->value
.sig
));
3061 case TARGET_WAITKIND_LOADED
:
3062 return xstrprintf ("%sloaded", kind_str
);
3063 case TARGET_WAITKIND_FORKED
:
3064 return xstrprintf ("%sforked", kind_str
);
3065 case TARGET_WAITKIND_VFORKED
:
3066 return xstrprintf ("%svforked", kind_str
);
3067 case TARGET_WAITKIND_EXECD
:
3068 return xstrprintf ("%sexecd", kind_str
);
3069 case TARGET_WAITKIND_SYSCALL_ENTRY
:
3070 return xstrprintf ("%sentered syscall", kind_str
);
3071 case TARGET_WAITKIND_SYSCALL_RETURN
:
3072 return xstrprintf ("%sexited syscall", kind_str
);
3073 case TARGET_WAITKIND_SPURIOUS
:
3074 return xstrprintf ("%sspurious", kind_str
);
3075 case TARGET_WAITKIND_IGNORE
:
3076 return xstrprintf ("%signore", kind_str
);
3077 case TARGET_WAITKIND_NO_HISTORY
:
3078 return xstrprintf ("%sno-history", kind_str
);
3080 return xstrprintf ("%sunknown???", kind_str
);
3085 debug_print_register (const char * func
,
3086 struct regcache
*regcache
, int regno
)
3088 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3090 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3091 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3092 && gdbarch_register_name (gdbarch
, regno
) != NULL
3093 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3094 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3095 gdbarch_register_name (gdbarch
, regno
));
3097 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3098 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3100 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3101 int i
, size
= register_size (gdbarch
, regno
);
3102 unsigned char buf
[MAX_REGISTER_SIZE
];
3104 regcache_raw_collect (regcache
, regno
, buf
);
3105 fprintf_unfiltered (gdb_stdlog
, " = ");
3106 for (i
= 0; i
< size
; i
++)
3108 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3110 if (size
<= sizeof (LONGEST
))
3112 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3114 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3115 core_addr_to_string_nz (val
), plongest (val
));
3118 fprintf_unfiltered (gdb_stdlog
, "\n");
3122 target_fetch_registers (struct regcache
*regcache
, int regno
)
3124 struct target_ops
*t
;
3126 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3128 if (t
->to_fetch_registers
!= NULL
)
3130 t
->to_fetch_registers (t
, regcache
, regno
);
3132 debug_print_register ("target_fetch_registers", regcache
, regno
);
3139 target_store_registers (struct regcache
*regcache
, int regno
)
3141 struct target_ops
*t
;
3143 if (!may_write_registers
)
3144 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3146 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3148 if (t
->to_store_registers
!= NULL
)
3150 t
->to_store_registers (t
, regcache
, regno
);
3153 debug_print_register ("target_store_registers", regcache
, regno
);
3163 target_core_of_thread (ptid_t ptid
)
3165 struct target_ops
*t
;
3167 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3169 if (t
->to_core_of_thread
!= NULL
)
3171 int retval
= t
->to_core_of_thread (t
, ptid
);
3174 fprintf_unfiltered (gdb_stdlog
, "target_core_of_thread (%d) = %d\n",
3175 PIDGET (ptid
), retval
);
3184 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3186 struct target_ops
*t
;
3188 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3190 if (t
->to_verify_memory
!= NULL
)
3192 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3195 fprintf_unfiltered (gdb_stdlog
, "target_verify_memory (%s, %s) = %d\n",
3196 paddress (target_gdbarch
, memaddr
),
3207 debug_to_prepare_to_store (struct regcache
*regcache
)
3209 debug_target
.to_prepare_to_store (regcache
);
3211 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
3215 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
3216 int write
, struct mem_attrib
*attrib
,
3217 struct target_ops
*target
)
3221 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
3224 fprintf_unfiltered (gdb_stdlog
,
3225 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
3226 paddress (target_gdbarch
, memaddr
), len
,
3227 write
? "write" : "read", retval
);
3233 fputs_unfiltered (", bytes =", gdb_stdlog
);
3234 for (i
= 0; i
< retval
; i
++)
3236 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
3238 if (targetdebug
< 2 && i
> 0)
3240 fprintf_unfiltered (gdb_stdlog
, " ...");
3243 fprintf_unfiltered (gdb_stdlog
, "\n");
3246 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
3250 fputc_unfiltered ('\n', gdb_stdlog
);
3256 debug_to_files_info (struct target_ops
*target
)
3258 debug_target
.to_files_info (target
);
3260 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
3264 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
3265 struct bp_target_info
*bp_tgt
)
3269 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
3271 fprintf_unfiltered (gdb_stdlog
,
3272 "target_insert_breakpoint (%s, xxx) = %ld\n",
3273 core_addr_to_string (bp_tgt
->placed_address
),
3274 (unsigned long) retval
);
3279 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
3280 struct bp_target_info
*bp_tgt
)
3284 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
3286 fprintf_unfiltered (gdb_stdlog
,
3287 "target_remove_breakpoint (%s, xxx) = %ld\n",
3288 core_addr_to_string (bp_tgt
->placed_address
),
3289 (unsigned long) retval
);
3294 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
3298 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
3300 fprintf_unfiltered (gdb_stdlog
,
3301 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
3302 (unsigned long) type
,
3303 (unsigned long) cnt
,
3304 (unsigned long) from_tty
,
3305 (unsigned long) retval
);
3310 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3314 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
3316 fprintf_unfiltered (gdb_stdlog
,
3317 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
3318 core_addr_to_string (addr
), (unsigned long) len
,
3319 core_addr_to_string (retval
));
3324 debug_to_can_accel_watchpoint_condition (CORE_ADDR addr
, int len
, int rw
,
3325 struct expression
*cond
)
3329 retval
= debug_target
.to_can_accel_watchpoint_condition (addr
, len
, rw
, cond
);
3331 fprintf_unfiltered (gdb_stdlog
,
3332 "target_can_accel_watchpoint_condition (%s, %d, %d, %s) = %ld\n",
3333 core_addr_to_string (addr
), len
, rw
,
3334 host_address_to_string (cond
), (unsigned long) retval
);
3339 debug_to_stopped_by_watchpoint (void)
3343 retval
= debug_target
.to_stopped_by_watchpoint ();
3345 fprintf_unfiltered (gdb_stdlog
,
3346 "target_stopped_by_watchpoint () = %ld\n",
3347 (unsigned long) retval
);
3352 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
3356 retval
= debug_target
.to_stopped_data_address (target
, addr
);
3358 fprintf_unfiltered (gdb_stdlog
,
3359 "target_stopped_data_address ([%s]) = %ld\n",
3360 core_addr_to_string (*addr
),
3361 (unsigned long)retval
);
3366 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
3368 CORE_ADDR start
, int length
)
3372 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
3375 fprintf_filtered (gdb_stdlog
,
3376 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
3377 core_addr_to_string (addr
), core_addr_to_string (start
),
3383 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
3384 struct bp_target_info
*bp_tgt
)
3388 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
3390 fprintf_unfiltered (gdb_stdlog
,
3391 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
3392 core_addr_to_string (bp_tgt
->placed_address
),
3393 (unsigned long) retval
);
3398 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
3399 struct bp_target_info
*bp_tgt
)
3403 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
3405 fprintf_unfiltered (gdb_stdlog
,
3406 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
3407 core_addr_to_string (bp_tgt
->placed_address
),
3408 (unsigned long) retval
);
3413 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
3414 struct expression
*cond
)
3418 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
, cond
);
3420 fprintf_unfiltered (gdb_stdlog
,
3421 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
3422 core_addr_to_string (addr
), len
, type
,
3423 host_address_to_string (cond
), (unsigned long) retval
);
3428 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
3429 struct expression
*cond
)
3433 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
, cond
);
3435 fprintf_unfiltered (gdb_stdlog
,
3436 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
3437 core_addr_to_string (addr
), len
, type
,
3438 host_address_to_string (cond
), (unsigned long) retval
);
3443 debug_to_terminal_init (void)
3445 debug_target
.to_terminal_init ();
3447 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
3451 debug_to_terminal_inferior (void)
3453 debug_target
.to_terminal_inferior ();
3455 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
3459 debug_to_terminal_ours_for_output (void)
3461 debug_target
.to_terminal_ours_for_output ();
3463 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
3467 debug_to_terminal_ours (void)
3469 debug_target
.to_terminal_ours ();
3471 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
3475 debug_to_terminal_save_ours (void)
3477 debug_target
.to_terminal_save_ours ();
3479 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
3483 debug_to_terminal_info (char *arg
, int from_tty
)
3485 debug_target
.to_terminal_info (arg
, from_tty
);
3487 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
3492 debug_to_load (char *args
, int from_tty
)
3494 debug_target
.to_load (args
, from_tty
);
3496 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
3500 debug_to_lookup_symbol (char *name
, CORE_ADDR
*addrp
)
3504 retval
= debug_target
.to_lookup_symbol (name
, addrp
);
3506 fprintf_unfiltered (gdb_stdlog
, "target_lookup_symbol (%s, xxx)\n", name
);
3512 debug_to_post_startup_inferior (ptid_t ptid
)
3514 debug_target
.to_post_startup_inferior (ptid
);
3516 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
3521 debug_to_acknowledge_created_inferior (int pid
)
3523 debug_target
.to_acknowledge_created_inferior (pid
);
3525 fprintf_unfiltered (gdb_stdlog
, "target_acknowledge_created_inferior (%d)\n",
3530 debug_to_insert_fork_catchpoint (int pid
)
3532 debug_target
.to_insert_fork_catchpoint (pid
);
3534 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d)\n",
3539 debug_to_remove_fork_catchpoint (int pid
)
3543 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
3545 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
3552 debug_to_insert_vfork_catchpoint (int pid
)
3554 debug_target
.to_insert_vfork_catchpoint (pid
);
3556 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d)\n",
3561 debug_to_remove_vfork_catchpoint (int pid
)
3565 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
3567 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
3574 debug_to_insert_exec_catchpoint (int pid
)
3576 debug_target
.to_insert_exec_catchpoint (pid
);
3578 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d)\n",
3583 debug_to_remove_exec_catchpoint (int pid
)
3587 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
3589 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
3596 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
3600 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
3602 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
3603 pid
, wait_status
, *exit_status
, has_exited
);
3609 debug_to_can_run (void)
3613 retval
= debug_target
.to_can_run ();
3615 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
3621 debug_to_notice_signals (ptid_t ptid
)
3623 debug_target
.to_notice_signals (ptid
);
3625 fprintf_unfiltered (gdb_stdlog
, "target_notice_signals (%d)\n",
3629 static struct gdbarch
*
3630 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3632 struct gdbarch
*retval
;
3634 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
3636 fprintf_unfiltered (gdb_stdlog
, "target_thread_architecture (%s) = %s [%s]\n",
3637 target_pid_to_str (ptid
), host_address_to_string (retval
),
3638 gdbarch_bfd_arch_info (retval
)->printable_name
);
3643 debug_to_stop (ptid_t ptid
)
3645 debug_target
.to_stop (ptid
);
3647 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
3648 target_pid_to_str (ptid
));
3652 debug_to_rcmd (char *command
,
3653 struct ui_file
*outbuf
)
3655 debug_target
.to_rcmd (command
, outbuf
);
3656 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
3660 debug_to_pid_to_exec_file (int pid
)
3664 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
3666 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
3673 setup_target_debug (void)
3675 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
3677 current_target
.to_open
= debug_to_open
;
3678 current_target
.to_post_attach
= debug_to_post_attach
;
3679 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
3680 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
3681 current_target
.to_files_info
= debug_to_files_info
;
3682 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
3683 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
3684 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
3685 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
3686 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
3687 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
3688 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
3689 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
3690 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
3691 current_target
.to_watchpoint_addr_within_range
= debug_to_watchpoint_addr_within_range
;
3692 current_target
.to_region_ok_for_hw_watchpoint
= debug_to_region_ok_for_hw_watchpoint
;
3693 current_target
.to_can_accel_watchpoint_condition
= debug_to_can_accel_watchpoint_condition
;
3694 current_target
.to_terminal_init
= debug_to_terminal_init
;
3695 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
3696 current_target
.to_terminal_ours_for_output
= debug_to_terminal_ours_for_output
;
3697 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
3698 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
3699 current_target
.to_terminal_info
= debug_to_terminal_info
;
3700 current_target
.to_load
= debug_to_load
;
3701 current_target
.to_lookup_symbol
= debug_to_lookup_symbol
;
3702 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
3703 current_target
.to_acknowledge_created_inferior
= debug_to_acknowledge_created_inferior
;
3704 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
3705 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
3706 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
3707 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
3708 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
3709 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
3710 current_target
.to_has_exited
= debug_to_has_exited
;
3711 current_target
.to_can_run
= debug_to_can_run
;
3712 current_target
.to_notice_signals
= debug_to_notice_signals
;
3713 current_target
.to_stop
= debug_to_stop
;
3714 current_target
.to_rcmd
= debug_to_rcmd
;
3715 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
3716 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
3720 static char targ_desc
[] =
3721 "Names of targets and files being debugged.\n\
3722 Shows the entire stack of targets currently in use (including the exec-file,\n\
3723 core-file, and process, if any), as well as the symbol file name.";
3726 do_monitor_command (char *cmd
,
3729 if ((current_target
.to_rcmd
3730 == (void (*) (char *, struct ui_file
*)) tcomplain
)
3731 || (current_target
.to_rcmd
== debug_to_rcmd
3732 && (debug_target
.to_rcmd
3733 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
3734 error (_("\"monitor\" command not supported by this target."));
3735 target_rcmd (cmd
, gdb_stdtarg
);
3738 /* Print the name of each layers of our target stack. */
3741 maintenance_print_target_stack (char *cmd
, int from_tty
)
3743 struct target_ops
*t
;
3745 printf_filtered (_("The current target stack is:\n"));
3747 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3749 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
3753 /* Controls if async mode is permitted. */
3754 int target_async_permitted
= 0;
3756 /* The set command writes to this variable. If the inferior is
3757 executing, linux_nat_async_permitted is *not* updated. */
3758 static int target_async_permitted_1
= 0;
3761 set_maintenance_target_async_permitted (char *args
, int from_tty
,
3762 struct cmd_list_element
*c
)
3764 if (have_live_inferiors ())
3766 target_async_permitted_1
= target_async_permitted
;
3767 error (_("Cannot change this setting while the inferior is running."));
3770 target_async_permitted
= target_async_permitted_1
;
3774 show_maintenance_target_async_permitted (struct ui_file
*file
, int from_tty
,
3775 struct cmd_list_element
*c
,
3778 fprintf_filtered (file
, _("\
3779 Controlling the inferior in asynchronous mode is %s.\n"), value
);
3782 /* Temporary copies of permission settings. */
3784 static int may_write_registers_1
= 1;
3785 static int may_write_memory_1
= 1;
3786 static int may_insert_breakpoints_1
= 1;
3787 static int may_insert_tracepoints_1
= 1;
3788 static int may_insert_fast_tracepoints_1
= 1;
3789 static int may_stop_1
= 1;
3791 /* Make the user-set values match the real values again. */
3794 update_target_permissions (void)
3796 may_write_registers_1
= may_write_registers
;
3797 may_write_memory_1
= may_write_memory
;
3798 may_insert_breakpoints_1
= may_insert_breakpoints
;
3799 may_insert_tracepoints_1
= may_insert_tracepoints
;
3800 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
3801 may_stop_1
= may_stop
;
3804 /* The one function handles (most of) the permission flags in the same
3808 set_target_permissions (char *args
, int from_tty
,
3809 struct cmd_list_element
*c
)
3811 if (target_has_execution
)
3813 update_target_permissions ();
3814 error (_("Cannot change this setting while the inferior is running."));
3817 /* Make the real values match the user-changed values. */
3818 may_write_registers
= may_write_registers_1
;
3819 may_insert_breakpoints
= may_insert_breakpoints_1
;
3820 may_insert_tracepoints
= may_insert_tracepoints_1
;
3821 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
3822 may_stop
= may_stop_1
;
3823 update_observer_mode ();
3826 /* Set memory write permission independently of observer mode. */
3829 set_write_memory_permission (char *args
, int from_tty
,
3830 struct cmd_list_element
*c
)
3832 /* Make the real values match the user-changed values. */
3833 may_write_memory
= may_write_memory_1
;
3834 update_observer_mode ();
3839 initialize_targets (void)
3841 init_dummy_target ();
3842 push_target (&dummy_target
);
3844 add_info ("target", target_info
, targ_desc
);
3845 add_info ("files", target_info
, targ_desc
);
3847 add_setshow_zinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
3848 Set target debugging."), _("\
3849 Show target debugging."), _("\
3850 When non-zero, target debugging is enabled. Higher numbers are more\n\
3851 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
3855 &setdebuglist
, &showdebuglist
);
3857 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
3858 &trust_readonly
, _("\
3859 Set mode for reading from readonly sections."), _("\
3860 Show mode for reading from readonly sections."), _("\
3861 When this mode is on, memory reads from readonly sections (such as .text)\n\
3862 will be read from the object file instead of from the target. This will\n\
3863 result in significant performance improvement for remote targets."),
3865 show_trust_readonly
,
3866 &setlist
, &showlist
);
3868 add_com ("monitor", class_obscure
, do_monitor_command
,
3869 _("Send a command to the remote monitor (remote targets only)."));
3871 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
3872 _("Print the name of each layer of the internal target stack."),
3873 &maintenanceprintlist
);
3875 add_setshow_boolean_cmd ("target-async", no_class
,
3876 &target_async_permitted_1
, _("\
3877 Set whether gdb controls the inferior in asynchronous mode."), _("\
3878 Show whether gdb controls the inferior in asynchronous mode."), _("\
3879 Tells gdb whether to control the inferior in asynchronous mode."),
3880 set_maintenance_target_async_permitted
,
3881 show_maintenance_target_async_permitted
,
3885 add_setshow_boolean_cmd ("stack-cache", class_support
,
3886 &stack_cache_enabled_p_1
, _("\
3887 Set cache use for stack access."), _("\
3888 Show cache use for stack access."), _("\
3889 When on, use the data cache for all stack access, regardless of any\n\
3890 configured memory regions. This improves remote performance significantly.\n\
3891 By default, caching for stack access is on."),
3892 set_stack_cache_enabled_p
,
3893 show_stack_cache_enabled_p
,
3894 &setlist
, &showlist
);
3896 add_setshow_boolean_cmd ("may-write-registers", class_support
,
3897 &may_write_registers_1
, _("\
3898 Set permission to write into registers."), _("\
3899 Show permission to write into registers."), _("\
3900 When this permission is on, GDB may write into the target's registers.\n\
3901 Otherwise, any sort of write attempt will result in an error."),
3902 set_target_permissions
, NULL
,
3903 &setlist
, &showlist
);
3905 add_setshow_boolean_cmd ("may-write-memory", class_support
,
3906 &may_write_memory_1
, _("\
3907 Set permission to write into target memory."), _("\
3908 Show permission to write into target memory."), _("\
3909 When this permission is on, GDB may write into the target's memory.\n\
3910 Otherwise, any sort of write attempt will result in an error."),
3911 set_write_memory_permission
, NULL
,
3912 &setlist
, &showlist
);
3914 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
3915 &may_insert_breakpoints_1
, _("\
3916 Set permission to insert breakpoints in the target."), _("\
3917 Show permission to insert breakpoints in the target."), _("\
3918 When this permission is on, GDB may insert breakpoints in the program.\n\
3919 Otherwise, any sort of insertion attempt will result in an error."),
3920 set_target_permissions
, NULL
,
3921 &setlist
, &showlist
);
3923 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
3924 &may_insert_tracepoints_1
, _("\
3925 Set permission to insert tracepoints in the target."), _("\
3926 Show permission to insert tracepoints in the target."), _("\
3927 When this permission is on, GDB may insert tracepoints in the program.\n\
3928 Otherwise, any sort of insertion attempt will result in an error."),
3929 set_target_permissions
, NULL
,
3930 &setlist
, &showlist
);
3932 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
3933 &may_insert_fast_tracepoints_1
, _("\
3934 Set permission to insert fast tracepoints in the target."), _("\
3935 Show permission to insert fast tracepoints in the target."), _("\
3936 When this permission is on, GDB may insert fast tracepoints.\n\
3937 Otherwise, any sort of insertion attempt will result in an error."),
3938 set_target_permissions
, NULL
,
3939 &setlist
, &showlist
);
3941 add_setshow_boolean_cmd ("may-interrupt", class_support
,
3943 Set permission to interrupt or signal the target."), _("\
3944 Show permission to interrupt or signal the target."), _("\
3945 When this permission is on, GDB may interrupt/stop the target's execution.\n\
3946 Otherwise, any attempt to interrupt or stop will be ignored."),
3947 set_target_permissions
, NULL
,
3948 &setlist
, &showlist
);
3951 target_dcache
= dcache_init ();