1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
5 Free Software Foundation, Inc.
7 Contributed by Cygnus Support.
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "gdb_string.h"
38 #include "gdb_assert.h"
40 #include "exceptions.h"
41 #include "target-descriptions.h"
42 #include "gdbthread.h"
45 #include "inline-frame.h"
46 #include "tracepoint.h"
48 static void target_info (char *, int);
50 static void default_terminal_info (char *, int);
52 static int default_watchpoint_addr_within_range (struct target_ops
*,
53 CORE_ADDR
, CORE_ADDR
, int);
55 static int default_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
57 static int nosymbol (char *, CORE_ADDR
*);
59 static void tcomplain (void) ATTRIBUTE_NORETURN
;
61 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
63 static int return_zero (void);
65 static int return_one (void);
67 static int return_minus_one (void);
69 void target_ignore (void);
71 static void target_command (char *, int);
73 static struct target_ops
*find_default_run_target (char *);
75 static LONGEST
default_xfer_partial (struct target_ops
*ops
,
76 enum target_object object
,
77 const char *annex
, gdb_byte
*readbuf
,
78 const gdb_byte
*writebuf
,
79 ULONGEST offset
, LONGEST len
);
81 static LONGEST
current_xfer_partial (struct target_ops
*ops
,
82 enum target_object object
,
83 const char *annex
, gdb_byte
*readbuf
,
84 const gdb_byte
*writebuf
,
85 ULONGEST offset
, LONGEST len
);
87 static LONGEST
target_xfer_partial (struct target_ops
*ops
,
88 enum target_object object
,
90 void *readbuf
, const void *writebuf
,
91 ULONGEST offset
, LONGEST len
);
93 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
96 static void init_dummy_target (void);
98 static struct target_ops debug_target
;
100 static void debug_to_open (char *, int);
102 static void debug_to_prepare_to_store (struct regcache
*);
104 static void debug_to_files_info (struct target_ops
*);
106 static int debug_to_insert_breakpoint (struct gdbarch
*,
107 struct bp_target_info
*);
109 static int debug_to_remove_breakpoint (struct gdbarch
*,
110 struct bp_target_info
*);
112 static int debug_to_can_use_hw_breakpoint (int, int, int);
114 static int debug_to_insert_hw_breakpoint (struct gdbarch
*,
115 struct bp_target_info
*);
117 static int debug_to_remove_hw_breakpoint (struct gdbarch
*,
118 struct bp_target_info
*);
120 static int debug_to_insert_watchpoint (CORE_ADDR
, int, int);
122 static int debug_to_remove_watchpoint (CORE_ADDR
, int, int);
124 static int debug_to_stopped_by_watchpoint (void);
126 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
128 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
129 CORE_ADDR
, CORE_ADDR
, int);
131 static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
133 static void debug_to_terminal_init (void);
135 static void debug_to_terminal_inferior (void);
137 static void debug_to_terminal_ours_for_output (void);
139 static void debug_to_terminal_save_ours (void);
141 static void debug_to_terminal_ours (void);
143 static void debug_to_terminal_info (char *, int);
145 static void debug_to_load (char *, int);
147 static int debug_to_lookup_symbol (char *, CORE_ADDR
*);
149 static int debug_to_can_run (void);
151 static void debug_to_notice_signals (ptid_t
);
153 static void debug_to_stop (ptid_t
);
155 /* NOTE: cagney/2004-09-29: Many targets reference this variable in
156 wierd and mysterious ways. Putting the variable here lets those
157 wierd and mysterious ways keep building while they are being
158 converted to the inferior inheritance structure. */
159 struct target_ops deprecated_child_ops
;
161 /* Pointer to array of target architecture structures; the size of the
162 array; the current index into the array; the allocated size of the
164 struct target_ops
**target_structs
;
165 unsigned target_struct_size
;
166 unsigned target_struct_index
;
167 unsigned target_struct_allocsize
;
168 #define DEFAULT_ALLOCSIZE 10
170 /* The initial current target, so that there is always a semi-valid
173 static struct target_ops dummy_target
;
175 /* Top of target stack. */
177 static struct target_ops
*target_stack
;
179 /* The target structure we are currently using to talk to a process
180 or file or whatever "inferior" we have. */
182 struct target_ops current_target
;
184 /* Command list for target. */
186 static struct cmd_list_element
*targetlist
= NULL
;
188 /* Nonzero if we should trust readonly sections from the
189 executable when reading memory. */
191 static int trust_readonly
= 0;
193 /* Nonzero if we should show true memory content including
194 memory breakpoint inserted by gdb. */
196 static int show_memory_breakpoints
= 0;
198 /* Non-zero if we want to see trace of target level stuff. */
200 static int targetdebug
= 0;
202 show_targetdebug (struct ui_file
*file
, int from_tty
,
203 struct cmd_list_element
*c
, const char *value
)
205 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
208 static void setup_target_debug (void);
210 /* The option sets this. */
211 static int stack_cache_enabled_p_1
= 1;
212 /* And set_stack_cache_enabled_p updates this.
213 The reason for the separation is so that we don't flush the cache for
214 on->on transitions. */
215 static int stack_cache_enabled_p
= 1;
217 /* This is called *after* the stack-cache has been set.
218 Flush the cache for off->on and on->off transitions.
219 There's no real need to flush the cache for on->off transitions,
220 except cleanliness. */
223 set_stack_cache_enabled_p (char *args
, int from_tty
,
224 struct cmd_list_element
*c
)
226 if (stack_cache_enabled_p
!= stack_cache_enabled_p_1
)
227 target_dcache_invalidate ();
229 stack_cache_enabled_p
= stack_cache_enabled_p_1
;
233 show_stack_cache_enabled_p (struct ui_file
*file
, int from_tty
,
234 struct cmd_list_element
*c
, const char *value
)
236 fprintf_filtered (file
, _("Cache use for stack accesses is %s.\n"), value
);
239 /* Cache of memory operations, to speed up remote access. */
240 static DCACHE
*target_dcache
;
242 /* Invalidate the target dcache. */
245 target_dcache_invalidate (void)
247 dcache_invalidate (target_dcache
);
250 /* The user just typed 'target' without the name of a target. */
253 target_command (char *arg
, int from_tty
)
255 fputs_filtered ("Argument required (target name). Try `help target'\n",
259 /* Default target_has_* methods for process_stratum targets. */
262 default_child_has_all_memory (struct target_ops
*ops
)
264 /* If no inferior selected, then we can't read memory here. */
265 if (ptid_equal (inferior_ptid
, null_ptid
))
272 default_child_has_memory (struct target_ops
*ops
)
274 /* If no inferior selected, then we can't read memory here. */
275 if (ptid_equal (inferior_ptid
, null_ptid
))
282 default_child_has_stack (struct target_ops
*ops
)
284 /* If no inferior selected, there's no stack. */
285 if (ptid_equal (inferior_ptid
, null_ptid
))
292 default_child_has_registers (struct target_ops
*ops
)
294 /* Can't read registers from no inferior. */
295 if (ptid_equal (inferior_ptid
, null_ptid
))
302 default_child_has_execution (struct target_ops
*ops
)
304 /* If there's no thread selected, then we can't make it run through
306 if (ptid_equal (inferior_ptid
, null_ptid
))
314 target_has_all_memory_1 (void)
316 struct target_ops
*t
;
318 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
319 if (t
->to_has_all_memory (t
))
326 target_has_memory_1 (void)
328 struct target_ops
*t
;
330 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
331 if (t
->to_has_memory (t
))
338 target_has_stack_1 (void)
340 struct target_ops
*t
;
342 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
343 if (t
->to_has_stack (t
))
350 target_has_registers_1 (void)
352 struct target_ops
*t
;
354 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
355 if (t
->to_has_registers (t
))
362 target_has_execution_1 (void)
364 struct target_ops
*t
;
366 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
367 if (t
->to_has_execution (t
))
373 /* Add a possible target architecture to the list. */
376 add_target (struct target_ops
*t
)
378 /* Provide default values for all "must have" methods. */
379 if (t
->to_xfer_partial
== NULL
)
380 t
->to_xfer_partial
= default_xfer_partial
;
382 if (t
->to_has_all_memory
== NULL
)
383 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
385 if (t
->to_has_memory
== NULL
)
386 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
388 if (t
->to_has_stack
== NULL
)
389 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
391 if (t
->to_has_registers
== NULL
)
392 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
394 if (t
->to_has_execution
== NULL
)
395 t
->to_has_execution
= (int (*) (struct target_ops
*)) return_zero
;
399 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
400 target_structs
= (struct target_ops
**) xmalloc
401 (target_struct_allocsize
* sizeof (*target_structs
));
403 if (target_struct_size
>= target_struct_allocsize
)
405 target_struct_allocsize
*= 2;
406 target_structs
= (struct target_ops
**)
407 xrealloc ((char *) target_structs
,
408 target_struct_allocsize
* sizeof (*target_structs
));
410 target_structs
[target_struct_size
++] = t
;
412 if (targetlist
== NULL
)
413 add_prefix_cmd ("target", class_run
, target_command
, _("\
414 Connect to a target machine or process.\n\
415 The first argument is the type or protocol of the target machine.\n\
416 Remaining arguments are interpreted by the target protocol. For more\n\
417 information on the arguments for a particular protocol, type\n\
418 `help target ' followed by the protocol name."),
419 &targetlist
, "target ", 0, &cmdlist
);
420 add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
433 struct target_ops
*t
;
435 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
436 if (t
->to_kill
!= NULL
)
439 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
449 target_load (char *arg
, int from_tty
)
451 target_dcache_invalidate ();
452 (*current_target
.to_load
) (arg
, from_tty
);
456 target_create_inferior (char *exec_file
, char *args
,
457 char **env
, int from_tty
)
459 struct target_ops
*t
;
460 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
462 if (t
->to_create_inferior
!= NULL
)
464 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
466 fprintf_unfiltered (gdb_stdlog
,
467 "target_create_inferior (%s, %s, xxx, %d)\n",
468 exec_file
, args
, from_tty
);
473 internal_error (__FILE__
, __LINE__
,
474 "could not find a target to create inferior");
478 target_terminal_inferior (void)
480 /* A background resume (``run&'') should leave GDB in control of the
481 terminal. Use target_can_async_p, not target_is_async_p, since at
482 this point the target is not async yet. However, if sync_execution
483 is not set, we know it will become async prior to resume. */
484 if (target_can_async_p () && !sync_execution
)
487 /* If GDB is resuming the inferior in the foreground, install
488 inferior's terminal modes. */
489 (*current_target
.to_terminal_inferior
) ();
493 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
494 struct target_ops
*t
)
496 errno
= EIO
; /* Can't read/write this location */
497 return 0; /* No bytes handled */
503 error (_("You can't do that when your target is `%s'"),
504 current_target
.to_shortname
);
510 error (_("You can't do that without a process to debug."));
514 nosymbol (char *name
, CORE_ADDR
*addrp
)
516 return 1; /* Symbol does not exist in target env */
520 default_terminal_info (char *args
, int from_tty
)
522 printf_unfiltered (_("No saved terminal information.\n"));
525 /* A default implementation for the to_get_ada_task_ptid target method.
527 This function builds the PTID by using both LWP and TID as part of
528 the PTID lwp and tid elements. The pid used is the pid of the
532 default_get_ada_task_ptid (long lwp
, long tid
)
534 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
537 /* Go through the target stack from top to bottom, copying over zero
538 entries in current_target, then filling in still empty entries. In
539 effect, we are doing class inheritance through the pushed target
542 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
543 is currently implemented, is that it discards any knowledge of
544 which target an inherited method originally belonged to.
545 Consequently, new new target methods should instead explicitly and
546 locally search the target stack for the target that can handle the
550 update_current_target (void)
552 struct target_ops
*t
;
554 /* First, reset current's contents. */
555 memset (¤t_target
, 0, sizeof (current_target
));
557 #define INHERIT(FIELD, TARGET) \
558 if (!current_target.FIELD) \
559 current_target.FIELD = (TARGET)->FIELD
561 for (t
= target_stack
; t
; t
= t
->beneath
)
563 INHERIT (to_shortname
, t
);
564 INHERIT (to_longname
, t
);
566 /* Do not inherit to_open. */
567 /* Do not inherit to_close. */
568 /* Do not inherit to_attach. */
569 INHERIT (to_post_attach
, t
);
570 INHERIT (to_attach_no_wait
, t
);
571 /* Do not inherit to_detach. */
572 /* Do not inherit to_disconnect. */
573 /* Do not inherit to_resume. */
574 /* Do not inherit to_wait. */
575 /* Do not inherit to_fetch_registers. */
576 /* Do not inherit to_store_registers. */
577 INHERIT (to_prepare_to_store
, t
);
578 INHERIT (deprecated_xfer_memory
, t
);
579 INHERIT (to_files_info
, t
);
580 INHERIT (to_insert_breakpoint
, t
);
581 INHERIT (to_remove_breakpoint
, t
);
582 INHERIT (to_can_use_hw_breakpoint
, t
);
583 INHERIT (to_insert_hw_breakpoint
, t
);
584 INHERIT (to_remove_hw_breakpoint
, t
);
585 INHERIT (to_insert_watchpoint
, t
);
586 INHERIT (to_remove_watchpoint
, t
);
587 INHERIT (to_stopped_data_address
, t
);
588 INHERIT (to_have_steppable_watchpoint
, t
);
589 INHERIT (to_have_continuable_watchpoint
, t
);
590 INHERIT (to_stopped_by_watchpoint
, t
);
591 INHERIT (to_watchpoint_addr_within_range
, t
);
592 INHERIT (to_region_ok_for_hw_watchpoint
, t
);
593 INHERIT (to_terminal_init
, t
);
594 INHERIT (to_terminal_inferior
, t
);
595 INHERIT (to_terminal_ours_for_output
, t
);
596 INHERIT (to_terminal_ours
, t
);
597 INHERIT (to_terminal_save_ours
, t
);
598 INHERIT (to_terminal_info
, t
);
599 /* Do not inherit to_kill. */
600 INHERIT (to_load
, t
);
601 INHERIT (to_lookup_symbol
, t
);
602 /* Do no inherit to_create_inferior. */
603 INHERIT (to_post_startup_inferior
, t
);
604 INHERIT (to_acknowledge_created_inferior
, t
);
605 INHERIT (to_insert_fork_catchpoint
, t
);
606 INHERIT (to_remove_fork_catchpoint
, t
);
607 INHERIT (to_insert_vfork_catchpoint
, t
);
608 INHERIT (to_remove_vfork_catchpoint
, t
);
609 /* Do not inherit to_follow_fork. */
610 INHERIT (to_insert_exec_catchpoint
, t
);
611 INHERIT (to_remove_exec_catchpoint
, t
);
612 INHERIT (to_set_syscall_catchpoint
, t
);
613 INHERIT (to_has_exited
, t
);
614 /* Do not inherit to_mourn_inferiour. */
615 INHERIT (to_can_run
, t
);
616 INHERIT (to_notice_signals
, t
);
617 /* Do not inherit to_thread_alive. */
618 /* Do not inherit to_find_new_threads. */
619 /* Do not inherit to_pid_to_str. */
620 INHERIT (to_extra_thread_info
, t
);
621 INHERIT (to_stop
, t
);
622 /* Do not inherit to_xfer_partial. */
623 INHERIT (to_rcmd
, t
);
624 INHERIT (to_pid_to_exec_file
, t
);
625 INHERIT (to_log_command
, t
);
626 INHERIT (to_stratum
, t
);
627 /* Do not inherit to_has_all_memory */
628 /* Do not inherit to_has_memory */
629 /* Do not inherit to_has_stack */
630 /* Do not inherit to_has_registers */
631 /* Do not inherit to_has_execution */
632 INHERIT (to_has_thread_control
, t
);
633 INHERIT (to_can_async_p
, t
);
634 INHERIT (to_is_async_p
, t
);
635 INHERIT (to_async
, t
);
636 INHERIT (to_async_mask
, t
);
637 INHERIT (to_find_memory_regions
, t
);
638 INHERIT (to_make_corefile_notes
, t
);
639 INHERIT (to_get_bookmark
, t
);
640 INHERIT (to_goto_bookmark
, t
);
641 /* Do not inherit to_get_thread_local_address. */
642 INHERIT (to_can_execute_reverse
, t
);
643 INHERIT (to_thread_architecture
, t
);
644 /* Do not inherit to_read_description. */
645 INHERIT (to_get_ada_task_ptid
, t
);
646 /* Do not inherit to_search_memory. */
647 INHERIT (to_supports_multi_process
, t
);
648 INHERIT (to_trace_init
, t
);
649 INHERIT (to_download_tracepoint
, t
);
650 INHERIT (to_download_trace_state_variable
, t
);
651 INHERIT (to_trace_set_readonly_regions
, t
);
652 INHERIT (to_trace_start
, t
);
653 INHERIT (to_get_trace_status
, t
);
654 INHERIT (to_trace_stop
, t
);
655 INHERIT (to_trace_find
, t
);
656 INHERIT (to_get_trace_state_variable_value
, t
);
657 INHERIT (to_save_trace_data
, t
);
658 INHERIT (to_upload_tracepoints
, t
);
659 INHERIT (to_upload_trace_state_variables
, t
);
660 INHERIT (to_get_raw_trace_data
, t
);
661 INHERIT (to_set_disconnected_tracing
, t
);
662 INHERIT (to_set_circular_trace_buffer
, t
);
663 INHERIT (to_get_tib_address
, t
);
664 INHERIT (to_magic
, t
);
665 /* Do not inherit to_memory_map. */
666 /* Do not inherit to_flash_erase. */
667 /* Do not inherit to_flash_done. */
671 /* Clean up a target struct so it no longer has any zero pointers in
672 it. Some entries are defaulted to a method that print an error,
673 others are hard-wired to a standard recursive default. */
675 #define de_fault(field, value) \
676 if (!current_target.field) \
677 current_target.field = value
680 (void (*) (char *, int))
685 de_fault (to_post_attach
,
688 de_fault (to_prepare_to_store
,
689 (void (*) (struct regcache
*))
691 de_fault (deprecated_xfer_memory
,
692 (int (*) (CORE_ADDR
, gdb_byte
*, int, int, struct mem_attrib
*, struct target_ops
*))
694 de_fault (to_files_info
,
695 (void (*) (struct target_ops
*))
697 de_fault (to_insert_breakpoint
,
698 memory_insert_breakpoint
);
699 de_fault (to_remove_breakpoint
,
700 memory_remove_breakpoint
);
701 de_fault (to_can_use_hw_breakpoint
,
702 (int (*) (int, int, int))
704 de_fault (to_insert_hw_breakpoint
,
705 (int (*) (struct gdbarch
*, struct bp_target_info
*))
707 de_fault (to_remove_hw_breakpoint
,
708 (int (*) (struct gdbarch
*, struct bp_target_info
*))
710 de_fault (to_insert_watchpoint
,
711 (int (*) (CORE_ADDR
, int, int))
713 de_fault (to_remove_watchpoint
,
714 (int (*) (CORE_ADDR
, int, int))
716 de_fault (to_stopped_by_watchpoint
,
719 de_fault (to_stopped_data_address
,
720 (int (*) (struct target_ops
*, CORE_ADDR
*))
722 de_fault (to_watchpoint_addr_within_range
,
723 default_watchpoint_addr_within_range
);
724 de_fault (to_region_ok_for_hw_watchpoint
,
725 default_region_ok_for_hw_watchpoint
);
726 de_fault (to_terminal_init
,
729 de_fault (to_terminal_inferior
,
732 de_fault (to_terminal_ours_for_output
,
735 de_fault (to_terminal_ours
,
738 de_fault (to_terminal_save_ours
,
741 de_fault (to_terminal_info
,
742 default_terminal_info
);
744 (void (*) (char *, int))
746 de_fault (to_lookup_symbol
,
747 (int (*) (char *, CORE_ADDR
*))
749 de_fault (to_post_startup_inferior
,
752 de_fault (to_acknowledge_created_inferior
,
755 de_fault (to_insert_fork_catchpoint
,
758 de_fault (to_remove_fork_catchpoint
,
761 de_fault (to_insert_vfork_catchpoint
,
764 de_fault (to_remove_vfork_catchpoint
,
767 de_fault (to_insert_exec_catchpoint
,
770 de_fault (to_remove_exec_catchpoint
,
773 de_fault (to_set_syscall_catchpoint
,
774 (int (*) (int, int, int, int, int *))
776 de_fault (to_has_exited
,
777 (int (*) (int, int, int *))
779 de_fault (to_can_run
,
781 de_fault (to_notice_signals
,
784 de_fault (to_extra_thread_info
,
785 (char *(*) (struct thread_info
*))
790 current_target
.to_xfer_partial
= current_xfer_partial
;
792 (void (*) (char *, struct ui_file
*))
794 de_fault (to_pid_to_exec_file
,
798 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
800 de_fault (to_async_mask
,
803 de_fault (to_thread_architecture
,
804 default_thread_architecture
);
805 current_target
.to_read_description
= NULL
;
806 de_fault (to_get_ada_task_ptid
,
807 (ptid_t (*) (long, long))
808 default_get_ada_task_ptid
);
809 de_fault (to_supports_multi_process
,
812 de_fault (to_trace_init
,
815 de_fault (to_download_tracepoint
,
816 (void (*) (struct breakpoint
*))
818 de_fault (to_download_trace_state_variable
,
819 (void (*) (struct trace_state_variable
*))
821 de_fault (to_trace_set_readonly_regions
,
824 de_fault (to_trace_start
,
827 de_fault (to_get_trace_status
,
828 (int (*) (struct trace_status
*))
830 de_fault (to_trace_stop
,
833 de_fault (to_trace_find
,
834 (int (*) (enum trace_find_type
, int, ULONGEST
, ULONGEST
, int *))
836 de_fault (to_get_trace_state_variable_value
,
837 (int (*) (int, LONGEST
*))
839 de_fault (to_save_trace_data
,
840 (int (*) (const char *))
842 de_fault (to_upload_tracepoints
,
843 (int (*) (struct uploaded_tp
**))
845 de_fault (to_upload_trace_state_variables
,
846 (int (*) (struct uploaded_tsv
**))
848 de_fault (to_get_raw_trace_data
,
849 (LONGEST (*) (gdb_byte
*, ULONGEST
, LONGEST
))
851 de_fault (to_set_disconnected_tracing
,
854 de_fault (to_set_circular_trace_buffer
,
857 de_fault (to_get_tib_address
,
858 (int (*) (ptid_t
, CORE_ADDR
*))
862 /* Finally, position the target-stack beneath the squashed
863 "current_target". That way code looking for a non-inherited
864 target method can quickly and simply find it. */
865 current_target
.beneath
= target_stack
;
868 setup_target_debug ();
871 /* Push a new target type into the stack of the existing target accessors,
872 possibly superseding some of the existing accessors.
874 Result is zero if the pushed target ended up on top of the stack,
875 nonzero if at least one target is on top of it.
877 Rather than allow an empty stack, we always have the dummy target at
878 the bottom stratum, so we can call the function vectors without
882 push_target (struct target_ops
*t
)
884 struct target_ops
**cur
;
886 /* Check magic number. If wrong, it probably means someone changed
887 the struct definition, but not all the places that initialize one. */
888 if (t
->to_magic
!= OPS_MAGIC
)
890 fprintf_unfiltered (gdb_stderr
,
891 "Magic number of %s target struct wrong\n",
893 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
896 /* Find the proper stratum to install this target in. */
897 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
899 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
903 /* If there's already targets at this stratum, remove them. */
904 /* FIXME: cagney/2003-10-15: I think this should be popping all
905 targets to CUR, and not just those at this stratum level. */
906 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
908 /* There's already something at this stratum level. Close it,
909 and un-hook it from the stack. */
910 struct target_ops
*tmp
= (*cur
);
911 (*cur
) = (*cur
)->beneath
;
913 target_close (tmp
, 0);
916 /* We have removed all targets in our stratum, now add the new one. */
920 update_current_target ();
923 return (t
!= target_stack
);
926 /* Remove a target_ops vector from the stack, wherever it may be.
927 Return how many times it was removed (0 or 1). */
930 unpush_target (struct target_ops
*t
)
932 struct target_ops
**cur
;
933 struct target_ops
*tmp
;
935 if (t
->to_stratum
== dummy_stratum
)
936 internal_error (__FILE__
, __LINE__
,
937 "Attempt to unpush the dummy target");
939 /* Look for the specified target. Note that we assume that a target
940 can only occur once in the target stack. */
942 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
949 return 0; /* Didn't find target_ops, quit now */
951 /* NOTE: cagney/2003-12-06: In '94 the close call was made
952 unconditional by moving it to before the above check that the
953 target was in the target stack (something about "Change the way
954 pushing and popping of targets work to support target overlays
955 and inheritance"). This doesn't make much sense - only open
956 targets should be closed. */
959 /* Unchain the target */
961 (*cur
) = (*cur
)->beneath
;
964 update_current_target ();
972 target_close (target_stack
, 0); /* Let it clean up */
973 if (unpush_target (target_stack
) == 1)
976 fprintf_unfiltered (gdb_stderr
,
977 "pop_target couldn't find target %s\n",
978 current_target
.to_shortname
);
979 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
983 pop_all_targets_above (enum strata above_stratum
, int quitting
)
985 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
987 target_close (target_stack
, quitting
);
988 if (!unpush_target (target_stack
))
990 fprintf_unfiltered (gdb_stderr
,
991 "pop_all_targets couldn't find target %s\n",
992 target_stack
->to_shortname
);
993 internal_error (__FILE__
, __LINE__
,
994 _("failed internal consistency check"));
1001 pop_all_targets (int quitting
)
1003 pop_all_targets_above (dummy_stratum
, quitting
);
1006 /* Using the objfile specified in OBJFILE, find the address for the
1007 current thread's thread-local storage with offset OFFSET. */
1009 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1011 volatile CORE_ADDR addr
= 0;
1012 struct target_ops
*target
;
1014 for (target
= current_target
.beneath
;
1016 target
= target
->beneath
)
1018 if (target
->to_get_thread_local_address
!= NULL
)
1023 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch
))
1025 ptid_t ptid
= inferior_ptid
;
1026 volatile struct gdb_exception ex
;
1028 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1032 /* Fetch the load module address for this objfile. */
1033 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch
,
1035 /* If it's 0, throw the appropriate exception. */
1037 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1038 _("TLS load module not found"));
1040 addr
= target
->to_get_thread_local_address (target
, ptid
, lm_addr
, offset
);
1042 /* If an error occurred, print TLS related messages here. Otherwise,
1043 throw the error to some higher catcher. */
1046 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1050 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1051 error (_("Cannot find thread-local variables in this thread library."));
1053 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1054 if (objfile_is_library
)
1055 error (_("Cannot find shared library `%s' in dynamic"
1056 " linker's load module list"), objfile
->name
);
1058 error (_("Cannot find executable file `%s' in dynamic"
1059 " linker's load module list"), objfile
->name
);
1061 case TLS_NOT_ALLOCATED_YET_ERROR
:
1062 if (objfile_is_library
)
1063 error (_("The inferior has not yet allocated storage for"
1064 " thread-local variables in\n"
1065 "the shared library `%s'\n"
1067 objfile
->name
, target_pid_to_str (ptid
));
1069 error (_("The inferior has not yet allocated storage for"
1070 " thread-local variables in\n"
1071 "the executable `%s'\n"
1073 objfile
->name
, target_pid_to_str (ptid
));
1075 case TLS_GENERIC_ERROR
:
1076 if (objfile_is_library
)
1077 error (_("Cannot find thread-local storage for %s, "
1078 "shared library %s:\n%s"),
1079 target_pid_to_str (ptid
),
1080 objfile
->name
, ex
.message
);
1082 error (_("Cannot find thread-local storage for %s, "
1083 "executable file %s:\n%s"),
1084 target_pid_to_str (ptid
),
1085 objfile
->name
, ex
.message
);
1088 throw_exception (ex
);
1093 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1094 TLS is an ABI-specific thing. But we don't do that yet. */
1096 error (_("Cannot find thread-local variables on this target"));
1102 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1104 /* target_read_string -- read a null terminated string, up to LEN bytes,
1105 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1106 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1107 is responsible for freeing it. Return the number of bytes successfully
1111 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1113 int tlen
, origlen
, offset
, i
;
1117 int buffer_allocated
;
1119 unsigned int nbytes_read
= 0;
1121 gdb_assert (string
);
1123 /* Small for testing. */
1124 buffer_allocated
= 4;
1125 buffer
= xmalloc (buffer_allocated
);
1132 tlen
= MIN (len
, 4 - (memaddr
& 3));
1133 offset
= memaddr
& 3;
1135 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1138 /* The transfer request might have crossed the boundary to an
1139 unallocated region of memory. Retry the transfer, requesting
1143 errcode
= target_read_memory (memaddr
, buf
, 1);
1148 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1151 bytes
= bufptr
- buffer
;
1152 buffer_allocated
*= 2;
1153 buffer
= xrealloc (buffer
, buffer_allocated
);
1154 bufptr
= buffer
+ bytes
;
1157 for (i
= 0; i
< tlen
; i
++)
1159 *bufptr
++ = buf
[i
+ offset
];
1160 if (buf
[i
+ offset
] == '\000')
1162 nbytes_read
+= i
+ 1;
1169 nbytes_read
+= tlen
;
1178 struct target_section_table
*
1179 target_get_section_table (struct target_ops
*target
)
1181 struct target_ops
*t
;
1184 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1186 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1187 if (t
->to_get_section_table
!= NULL
)
1188 return (*t
->to_get_section_table
) (t
);
1193 /* Find a section containing ADDR. */
1195 struct target_section
*
1196 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1198 struct target_section_table
*table
= target_get_section_table (target
);
1199 struct target_section
*secp
;
1204 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1206 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1212 /* Perform a partial memory transfer.
1213 For docs see target.h, to_xfer_partial. */
1216 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1217 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1222 struct mem_region
*region
;
1223 struct inferior
*inf
;
1225 /* Zero length requests are ok and require no work. */
1229 /* For accesses to unmapped overlay sections, read directly from
1230 files. Must do this first, as MEMADDR may need adjustment. */
1231 if (readbuf
!= NULL
&& overlay_debugging
)
1233 struct obj_section
*section
= find_pc_overlay (memaddr
);
1234 if (pc_in_unmapped_range (memaddr
, section
))
1236 struct target_section_table
*table
1237 = target_get_section_table (ops
);
1238 const char *section_name
= section
->the_bfd_section
->name
;
1239 memaddr
= overlay_mapped_address (memaddr
, section
);
1240 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1243 table
->sections_end
,
1248 /* Try the executable files, if "trust-readonly-sections" is set. */
1249 if (readbuf
!= NULL
&& trust_readonly
)
1251 struct target_section
*secp
;
1252 struct target_section_table
*table
;
1254 secp
= target_section_by_addr (ops
, memaddr
);
1256 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1259 table
= target_get_section_table (ops
);
1260 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1263 table
->sections_end
,
1268 /* Try GDB's internal data cache. */
1269 region
= lookup_mem_region (memaddr
);
1270 /* region->hi == 0 means there's no upper bound. */
1271 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1274 reg_len
= region
->hi
- memaddr
;
1276 switch (region
->attrib
.mode
)
1279 if (writebuf
!= NULL
)
1284 if (readbuf
!= NULL
)
1289 /* We only support writing to flash during "load" for now. */
1290 if (writebuf
!= NULL
)
1291 error (_("Writing to flash memory forbidden in this context"));
1298 if (!ptid_equal (inferior_ptid
, null_ptid
))
1299 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1304 /* The dcache reads whole cache lines; that doesn't play well
1305 with reading from a trace buffer, because reading outside of
1306 the collected memory range fails. */
1307 && get_traceframe_number () == -1
1308 && (region
->attrib
.cache
1309 || (stack_cache_enabled_p
&& object
== TARGET_OBJECT_STACK_MEMORY
)))
1311 if (readbuf
!= NULL
)
1312 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
, readbuf
,
1315 /* FIXME drow/2006-08-09: If we're going to preserve const
1316 correctness dcache_xfer_memory should take readbuf and
1318 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
,
1325 if (readbuf
&& !show_memory_breakpoints
)
1326 breakpoint_restore_shadows (readbuf
, memaddr
, reg_len
);
1331 /* If none of those methods found the memory we wanted, fall back
1332 to a target partial transfer. Normally a single call to
1333 to_xfer_partial is enough; if it doesn't recognize an object
1334 it will call the to_xfer_partial of the next target down.
1335 But for memory this won't do. Memory is the only target
1336 object which can be read from more than one valid target.
1337 A core file, for instance, could have some of memory but
1338 delegate other bits to the target below it. So, we must
1339 manually try all targets. */
1343 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1344 readbuf
, writebuf
, memaddr
, reg_len
);
1348 /* We want to continue past core files to executables, but not
1349 past a running target's memory. */
1350 if (ops
->to_has_all_memory (ops
))
1355 while (ops
!= NULL
);
1357 if (readbuf
&& !show_memory_breakpoints
)
1358 breakpoint_restore_shadows (readbuf
, memaddr
, reg_len
);
1360 /* Make sure the cache gets updated no matter what - if we are writing
1361 to the stack. Even if this write is not tagged as such, we still need
1362 to update the cache. */
1367 && !region
->attrib
.cache
1368 && stack_cache_enabled_p
1369 && object
!= TARGET_OBJECT_STACK_MEMORY
)
1371 dcache_update (target_dcache
, memaddr
, (void *) writebuf
, res
);
1374 /* If we still haven't got anything, return the last error. We
1380 restore_show_memory_breakpoints (void *arg
)
1382 show_memory_breakpoints
= (uintptr_t) arg
;
1386 make_show_memory_breakpoints_cleanup (int show
)
1388 int current
= show_memory_breakpoints
;
1389 show_memory_breakpoints
= show
;
1391 return make_cleanup (restore_show_memory_breakpoints
,
1392 (void *) (uintptr_t) current
);
1395 /* For docs see target.h, to_xfer_partial. */
1398 target_xfer_partial (struct target_ops
*ops
,
1399 enum target_object object
, const char *annex
,
1400 void *readbuf
, const void *writebuf
,
1401 ULONGEST offset
, LONGEST len
)
1405 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1407 /* If this is a memory transfer, let the memory-specific code
1408 have a look at it instead. Memory transfers are more
1410 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
)
1411 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1412 writebuf
, offset
, len
);
1415 enum target_object raw_object
= object
;
1417 /* If this is a raw memory transfer, request the normal
1418 memory object from other layers. */
1419 if (raw_object
== TARGET_OBJECT_RAW_MEMORY
)
1420 raw_object
= TARGET_OBJECT_MEMORY
;
1422 retval
= ops
->to_xfer_partial (ops
, raw_object
, annex
, readbuf
,
1423 writebuf
, offset
, len
);
1428 const unsigned char *myaddr
= NULL
;
1430 fprintf_unfiltered (gdb_stdlog
,
1431 "%s:target_xfer_partial (%d, %s, %s, %s, %s, %s) = %s",
1434 (annex
? annex
: "(null)"),
1435 host_address_to_string (readbuf
),
1436 host_address_to_string (writebuf
),
1437 core_addr_to_string_nz (offset
),
1438 plongest (len
), plongest (retval
));
1444 if (retval
> 0 && myaddr
!= NULL
)
1448 fputs_unfiltered (", bytes =", gdb_stdlog
);
1449 for (i
= 0; i
< retval
; i
++)
1451 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1453 if (targetdebug
< 2 && i
> 0)
1455 fprintf_unfiltered (gdb_stdlog
, " ...");
1458 fprintf_unfiltered (gdb_stdlog
, "\n");
1461 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1465 fputc_unfiltered ('\n', gdb_stdlog
);
1470 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
1471 GDB's memory at MYADDR. Returns either 0 for success or an errno value
1472 if any error occurs.
1474 If an error occurs, no guarantee is made about the contents of the data at
1475 MYADDR. In particular, the caller should not depend upon partial reads
1476 filling the buffer with good data. There is no way for the caller to know
1477 how much good data might have been transfered anyway. Callers that can
1478 deal with partial reads should call target_read (which will retry until
1479 it makes no progress, and then return how much was transferred). */
1482 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
1484 /* Dispatch to the topmost target, not the flattened current_target.
1485 Memory accesses check target->to_has_(all_)memory, and the
1486 flattened target doesn't inherit those. */
1487 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1488 myaddr
, memaddr
, len
) == len
)
1494 /* Like target_read_memory, but specify explicitly that this is a read from
1495 the target's stack. This may trigger different cache behavior. */
1498 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
1500 /* Dispatch to the topmost target, not the flattened current_target.
1501 Memory accesses check target->to_has_(all_)memory, and the
1502 flattened target doesn't inherit those. */
1504 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1505 myaddr
, memaddr
, len
) == len
)
1511 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1512 Returns either 0 for success or an errno value if any error occurs.
1513 If an error occurs, no guarantee is made about how much data got written.
1514 Callers that can deal with partial writes should call target_write. */
1517 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
1519 /* Dispatch to the topmost target, not the flattened current_target.
1520 Memory accesses check target->to_has_(all_)memory, and the
1521 flattened target doesn't inherit those. */
1522 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1523 myaddr
, memaddr
, len
) == len
)
1529 /* Fetch the target's memory map. */
1532 target_memory_map (void)
1534 VEC(mem_region_s
) *result
;
1535 struct mem_region
*last_one
, *this_one
;
1537 struct target_ops
*t
;
1540 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1542 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1543 if (t
->to_memory_map
!= NULL
)
1549 result
= t
->to_memory_map (t
);
1553 qsort (VEC_address (mem_region_s
, result
),
1554 VEC_length (mem_region_s
, result
),
1555 sizeof (struct mem_region
), mem_region_cmp
);
1557 /* Check that regions do not overlap. Simultaneously assign
1558 a numbering for the "mem" commands to use to refer to
1561 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1563 this_one
->number
= ix
;
1565 if (last_one
&& last_one
->hi
> this_one
->lo
)
1567 warning (_("Overlapping regions in memory map: ignoring"));
1568 VEC_free (mem_region_s
, result
);
1571 last_one
= this_one
;
1578 target_flash_erase (ULONGEST address
, LONGEST length
)
1580 struct target_ops
*t
;
1582 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1583 if (t
->to_flash_erase
!= NULL
)
1586 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1587 hex_string (address
), phex (length
, 0));
1588 t
->to_flash_erase (t
, address
, length
);
1596 target_flash_done (void)
1598 struct target_ops
*t
;
1600 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1601 if (t
->to_flash_done
!= NULL
)
1604 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1605 t
->to_flash_done (t
);
1613 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1614 struct cmd_list_element
*c
, const char *value
)
1616 fprintf_filtered (file
, _("\
1617 Mode for reading from readonly sections is %s.\n"),
1621 /* More generic transfers. */
1624 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1625 const char *annex
, gdb_byte
*readbuf
,
1626 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1628 if (object
== TARGET_OBJECT_MEMORY
1629 && ops
->deprecated_xfer_memory
!= NULL
)
1630 /* If available, fall back to the target's
1631 "deprecated_xfer_memory" method. */
1635 if (writebuf
!= NULL
)
1637 void *buffer
= xmalloc (len
);
1638 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1639 memcpy (buffer
, writebuf
, len
);
1640 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1641 1/*write*/, NULL
, ops
);
1642 do_cleanups (cleanup
);
1644 if (readbuf
!= NULL
)
1645 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1646 0/*read*/, NULL
, ops
);
1649 else if (xfered
== 0 && errno
== 0)
1650 /* "deprecated_xfer_memory" uses 0, cross checked against
1651 ERRNO as one indication of an error. */
1656 else if (ops
->beneath
!= NULL
)
1657 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1658 readbuf
, writebuf
, offset
, len
);
1663 /* The xfer_partial handler for the topmost target. Unlike the default,
1664 it does not need to handle memory specially; it just passes all
1665 requests down the stack. */
1668 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1669 const char *annex
, gdb_byte
*readbuf
,
1670 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1672 if (ops
->beneath
!= NULL
)
1673 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1674 readbuf
, writebuf
, offset
, len
);
1679 /* Target vector read/write partial wrapper functions. */
1682 target_read_partial (struct target_ops
*ops
,
1683 enum target_object object
,
1684 const char *annex
, gdb_byte
*buf
,
1685 ULONGEST offset
, LONGEST len
)
1687 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
1691 target_write_partial (struct target_ops
*ops
,
1692 enum target_object object
,
1693 const char *annex
, const gdb_byte
*buf
,
1694 ULONGEST offset
, LONGEST len
)
1696 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
1699 /* Wrappers to perform the full transfer. */
1701 /* For docs on target_read see target.h. */
1704 target_read (struct target_ops
*ops
,
1705 enum target_object object
,
1706 const char *annex
, gdb_byte
*buf
,
1707 ULONGEST offset
, LONGEST len
)
1710 while (xfered
< len
)
1712 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
1713 (gdb_byte
*) buf
+ xfered
,
1714 offset
+ xfered
, len
- xfered
);
1715 /* Call an observer, notifying them of the xfer progress? */
1727 target_read_until_error (struct target_ops
*ops
,
1728 enum target_object object
,
1729 const char *annex
, gdb_byte
*buf
,
1730 ULONGEST offset
, LONGEST len
)
1733 while (xfered
< len
)
1735 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
1736 (gdb_byte
*) buf
+ xfered
,
1737 offset
+ xfered
, len
- xfered
);
1738 /* Call an observer, notifying them of the xfer progress? */
1743 /* We've got an error. Try to read in smaller blocks. */
1744 ULONGEST start
= offset
+ xfered
;
1745 ULONGEST remaining
= len
- xfered
;
1748 /* If an attempt was made to read a random memory address,
1749 it's likely that the very first byte is not accessible.
1750 Try reading the first byte, to avoid doing log N tries
1752 xfer
= target_read_partial (ops
, object
, annex
,
1753 (gdb_byte
*) buf
+ xfered
, start
, 1);
1762 xfer
= target_read_partial (ops
, object
, annex
,
1763 (gdb_byte
*) buf
+ xfered
,
1773 /* We have successfully read the first half. So, the
1774 error must be in the second half. Adjust start and
1775 remaining to point at the second half. */
1791 /* An alternative to target_write with progress callbacks. */
1794 target_write_with_progress (struct target_ops
*ops
,
1795 enum target_object object
,
1796 const char *annex
, const gdb_byte
*buf
,
1797 ULONGEST offset
, LONGEST len
,
1798 void (*progress
) (ULONGEST
, void *), void *baton
)
1802 /* Give the progress callback a chance to set up. */
1804 (*progress
) (0, baton
);
1806 while (xfered
< len
)
1808 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
1809 (gdb_byte
*) buf
+ xfered
,
1810 offset
+ xfered
, len
- xfered
);
1818 (*progress
) (xfer
, baton
);
1826 /* For docs on target_write see target.h. */
1829 target_write (struct target_ops
*ops
,
1830 enum target_object object
,
1831 const char *annex
, const gdb_byte
*buf
,
1832 ULONGEST offset
, LONGEST len
)
1834 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
1838 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
1839 the size of the transferred data. PADDING additional bytes are
1840 available in *BUF_P. This is a helper function for
1841 target_read_alloc; see the declaration of that function for more
1845 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
1846 const char *annex
, gdb_byte
**buf_p
, int padding
)
1848 size_t buf_alloc
, buf_pos
;
1852 /* This function does not have a length parameter; it reads the
1853 entire OBJECT). Also, it doesn't support objects fetched partly
1854 from one target and partly from another (in a different stratum,
1855 e.g. a core file and an executable). Both reasons make it
1856 unsuitable for reading memory. */
1857 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
1859 /* Start by reading up to 4K at a time. The target will throttle
1860 this number down if necessary. */
1862 buf
= xmalloc (buf_alloc
);
1866 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
1867 buf_pos
, buf_alloc
- buf_pos
- padding
);
1870 /* An error occurred. */
1876 /* Read all there was. */
1886 /* If the buffer is filling up, expand it. */
1887 if (buf_alloc
< buf_pos
* 2)
1890 buf
= xrealloc (buf
, buf_alloc
);
1897 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
1898 the size of the transferred data. See the declaration in "target.h"
1899 function for more information about the return value. */
1902 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
1903 const char *annex
, gdb_byte
**buf_p
)
1905 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
1908 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
1909 returned as a string, allocated using xmalloc. If an error occurs
1910 or the transfer is unsupported, NULL is returned. Empty objects
1911 are returned as allocated but empty strings. A warning is issued
1912 if the result contains any embedded NUL bytes. */
1915 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
1919 LONGEST transferred
;
1921 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
1923 if (transferred
< 0)
1926 if (transferred
== 0)
1927 return xstrdup ("");
1929 buffer
[transferred
] = 0;
1930 if (strlen (buffer
) < transferred
)
1931 warning (_("target object %d, annex %s, "
1932 "contained unexpected null characters"),
1933 (int) object
, annex
? annex
: "(none)");
1935 return (char *) buffer
;
1938 /* Memory transfer methods. */
1941 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
1944 /* This method is used to read from an alternate, non-current
1945 target. This read must bypass the overlay support (as symbols
1946 don't match this target), and GDB's internal cache (wrong cache
1947 for this target). */
1948 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
1950 memory_error (EIO
, addr
);
1954 get_target_memory_unsigned (struct target_ops
*ops
,
1955 CORE_ADDR addr
, int len
, enum bfd_endian byte_order
)
1957 gdb_byte buf
[sizeof (ULONGEST
)];
1959 gdb_assert (len
<= sizeof (buf
));
1960 get_target_memory (ops
, addr
, buf
, len
);
1961 return extract_unsigned_integer (buf
, len
, byte_order
);
1965 target_info (char *args
, int from_tty
)
1967 struct target_ops
*t
;
1968 int has_all_mem
= 0;
1970 if (symfile_objfile
!= NULL
)
1971 printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile
->name
);
1973 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
1975 if (!(*t
->to_has_memory
) (t
))
1978 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
1981 printf_unfiltered (_("\tWhile running this, GDB does not access memory from...\n"));
1982 printf_unfiltered ("%s:\n", t
->to_longname
);
1983 (t
->to_files_info
) (t
);
1984 has_all_mem
= (*t
->to_has_all_memory
) (t
);
1988 /* This function is called before any new inferior is created, e.g.
1989 by running a program, attaching, or connecting to a target.
1990 It cleans up any state from previous invocations which might
1991 change between runs. This is a subset of what target_preopen
1992 resets (things which might change between targets). */
1995 target_pre_inferior (int from_tty
)
1997 /* Clear out solib state. Otherwise the solib state of the previous
1998 inferior might have survived and is entirely wrong for the new
1999 target. This has been observed on GNU/Linux using glibc 2.3. How
2011 Cannot access memory at address 0xdeadbeef
2014 /* In some OSs, the shared library list is the same/global/shared
2015 across inferiors. If code is shared between processes, so are
2016 memory regions and features. */
2017 if (!gdbarch_has_global_solist (target_gdbarch
))
2019 no_shared_libraries (NULL
, from_tty
);
2021 invalidate_target_mem_regions ();
2023 target_clear_description ();
2027 /* Callback for iterate_over_inferiors. Gets rid of the given
2031 dispose_inferior (struct inferior
*inf
, void *args
)
2033 struct thread_info
*thread
;
2035 thread
= any_thread_of_process (inf
->pid
);
2038 switch_to_thread (thread
->ptid
);
2040 /* Core inferiors actually should be detached, not killed. */
2041 if (target_has_execution
)
2044 target_detach (NULL
, 0);
2050 /* This is to be called by the open routine before it does
2054 target_preopen (int from_tty
)
2058 if (have_inferiors ())
2061 || !have_live_inferiors ()
2062 || query (_("A program is being debugged already. Kill it? ")))
2063 iterate_over_inferiors (dispose_inferior
, NULL
);
2065 error (_("Program not killed."));
2068 /* Calling target_kill may remove the target from the stack. But if
2069 it doesn't (which seems like a win for UDI), remove it now. */
2070 /* Leave the exec target, though. The user may be switching from a
2071 live process to a core of the same program. */
2072 pop_all_targets_above (file_stratum
, 0);
2074 target_pre_inferior (from_tty
);
2077 /* Detach a target after doing deferred register stores. */
2080 target_detach (char *args
, int from_tty
)
2082 struct target_ops
* t
;
2084 if (gdbarch_has_global_breakpoints (target_gdbarch
))
2085 /* Don't remove global breakpoints here. They're removed on
2086 disconnection from the target. */
2089 /* If we're in breakpoints-always-inserted mode, have to remove
2090 them before detaching. */
2091 remove_breakpoints_pid (PIDGET (inferior_ptid
));
2093 prepare_for_detach ();
2095 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2097 if (t
->to_detach
!= NULL
)
2099 t
->to_detach (t
, args
, from_tty
);
2101 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2107 internal_error (__FILE__
, __LINE__
, "could not find a target to detach");
2111 target_disconnect (char *args
, int from_tty
)
2113 struct target_ops
*t
;
2115 /* If we're in breakpoints-always-inserted mode or if breakpoints
2116 are global across processes, we have to remove them before
2118 remove_breakpoints ();
2120 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2121 if (t
->to_disconnect
!= NULL
)
2124 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2126 t
->to_disconnect (t
, args
, from_tty
);
2134 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2136 struct target_ops
*t
;
2138 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2140 if (t
->to_wait
!= NULL
)
2142 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2146 char *status_string
;
2148 status_string
= target_waitstatus_to_string (status
);
2149 fprintf_unfiltered (gdb_stdlog
,
2150 "target_wait (%d, status) = %d, %s\n",
2151 PIDGET (ptid
), PIDGET (retval
),
2153 xfree (status_string
);
2164 target_pid_to_str (ptid_t ptid
)
2166 struct target_ops
*t
;
2168 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2170 if (t
->to_pid_to_str
!= NULL
)
2171 return (*t
->to_pid_to_str
) (t
, ptid
);
2174 return normal_pid_to_str (ptid
);
2178 target_resume (ptid_t ptid
, int step
, enum target_signal signal
)
2180 struct target_ops
*t
;
2182 target_dcache_invalidate ();
2184 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2186 if (t
->to_resume
!= NULL
)
2188 t
->to_resume (t
, ptid
, step
, signal
);
2190 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2192 step
? "step" : "continue",
2193 target_signal_to_name (signal
));
2195 registers_changed_ptid (ptid
);
2196 set_executing (ptid
, 1);
2197 set_running (ptid
, 1);
2198 clear_inline_frame_state (ptid
);
2205 /* Look through the list of possible targets for a target that can
2209 target_follow_fork (int follow_child
)
2211 struct target_ops
*t
;
2213 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2215 if (t
->to_follow_fork
!= NULL
)
2217 int retval
= t
->to_follow_fork (t
, follow_child
);
2219 fprintf_unfiltered (gdb_stdlog
, "target_follow_fork (%d) = %d\n",
2220 follow_child
, retval
);
2225 /* Some target returned a fork event, but did not know how to follow it. */
2226 internal_error (__FILE__
, __LINE__
,
2227 "could not find a target to follow fork");
2231 target_mourn_inferior (void)
2233 struct target_ops
*t
;
2234 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2236 if (t
->to_mourn_inferior
!= NULL
)
2238 t
->to_mourn_inferior (t
);
2240 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2242 /* We no longer need to keep handles on any of the object files.
2243 Make sure to release them to avoid unnecessarily locking any
2244 of them while we're not actually debugging. */
2245 bfd_cache_close_all ();
2251 internal_error (__FILE__
, __LINE__
,
2252 "could not find a target to follow mourn inferiour");
2255 /* Look for a target which can describe architectural features, starting
2256 from TARGET. If we find one, return its description. */
2258 const struct target_desc
*
2259 target_read_description (struct target_ops
*target
)
2261 struct target_ops
*t
;
2263 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2264 if (t
->to_read_description
!= NULL
)
2266 const struct target_desc
*tdesc
;
2268 tdesc
= t
->to_read_description (t
);
2276 /* The default implementation of to_search_memory.
2277 This implements a basic search of memory, reading target memory and
2278 performing the search here (as opposed to performing the search in on the
2279 target side with, for example, gdbserver). */
2282 simple_search_memory (struct target_ops
*ops
,
2283 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2284 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2285 CORE_ADDR
*found_addrp
)
2287 /* NOTE: also defined in find.c testcase. */
2288 #define SEARCH_CHUNK_SIZE 16000
2289 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2290 /* Buffer to hold memory contents for searching. */
2291 gdb_byte
*search_buf
;
2292 unsigned search_buf_size
;
2293 struct cleanup
*old_cleanups
;
2295 search_buf_size
= chunk_size
+ pattern_len
- 1;
2297 /* No point in trying to allocate a buffer larger than the search space. */
2298 if (search_space_len
< search_buf_size
)
2299 search_buf_size
= search_space_len
;
2301 search_buf
= malloc (search_buf_size
);
2302 if (search_buf
== NULL
)
2303 error (_("Unable to allocate memory to perform the search."));
2304 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2306 /* Prime the search buffer. */
2308 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2309 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2311 warning (_("Unable to access target memory at %s, halting search."),
2312 hex_string (start_addr
));
2313 do_cleanups (old_cleanups
);
2317 /* Perform the search.
2319 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2320 When we've scanned N bytes we copy the trailing bytes to the start and
2321 read in another N bytes. */
2323 while (search_space_len
>= pattern_len
)
2325 gdb_byte
*found_ptr
;
2326 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2328 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2329 pattern
, pattern_len
);
2331 if (found_ptr
!= NULL
)
2333 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2334 *found_addrp
= found_addr
;
2335 do_cleanups (old_cleanups
);
2339 /* Not found in this chunk, skip to next chunk. */
2341 /* Don't let search_space_len wrap here, it's unsigned. */
2342 if (search_space_len
>= chunk_size
)
2343 search_space_len
-= chunk_size
;
2345 search_space_len
= 0;
2347 if (search_space_len
>= pattern_len
)
2349 unsigned keep_len
= search_buf_size
- chunk_size
;
2350 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2353 /* Copy the trailing part of the previous iteration to the front
2354 of the buffer for the next iteration. */
2355 gdb_assert (keep_len
== pattern_len
- 1);
2356 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2358 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2360 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2361 search_buf
+ keep_len
, read_addr
,
2362 nr_to_read
) != nr_to_read
)
2364 warning (_("Unable to access target memory at %s, halting search."),
2365 hex_string (read_addr
));
2366 do_cleanups (old_cleanups
);
2370 start_addr
+= chunk_size
;
2376 do_cleanups (old_cleanups
);
2380 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2381 sequence of bytes in PATTERN with length PATTERN_LEN.
2383 The result is 1 if found, 0 if not found, and -1 if there was an error
2384 requiring halting of the search (e.g. memory read error).
2385 If the pattern is found the address is recorded in FOUND_ADDRP. */
2388 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2389 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2390 CORE_ADDR
*found_addrp
)
2392 struct target_ops
*t
;
2395 /* We don't use INHERIT to set current_target.to_search_memory,
2396 so we have to scan the target stack and handle targetdebug
2400 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2401 hex_string (start_addr
));
2403 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2404 if (t
->to_search_memory
!= NULL
)
2409 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2410 pattern
, pattern_len
, found_addrp
);
2414 /* If a special version of to_search_memory isn't available, use the
2416 found
= simple_search_memory (current_target
.beneath
,
2417 start_addr
, search_space_len
,
2418 pattern
, pattern_len
, found_addrp
);
2422 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2427 /* Look through the currently pushed targets. If none of them will
2428 be able to restart the currently running process, issue an error
2432 target_require_runnable (void)
2434 struct target_ops
*t
;
2436 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2438 /* If this target knows how to create a new program, then
2439 assume we will still be able to after killing the current
2440 one. Either killing and mourning will not pop T, or else
2441 find_default_run_target will find it again. */
2442 if (t
->to_create_inferior
!= NULL
)
2445 /* Do not worry about thread_stratum targets that can not
2446 create inferiors. Assume they will be pushed again if
2447 necessary, and continue to the process_stratum. */
2448 if (t
->to_stratum
== thread_stratum
2449 || t
->to_stratum
== arch_stratum
)
2453 The \"%s\" target does not support \"run\". Try \"help target\" or \"continue\"."),
2457 /* This function is only called if the target is running. In that
2458 case there should have been a process_stratum target and it
2459 should either know how to create inferiors, or not... */
2460 internal_error (__FILE__
, __LINE__
, "No targets found");
2463 /* Look through the list of possible targets for a target that can
2464 execute a run or attach command without any other data. This is
2465 used to locate the default process stratum.
2467 If DO_MESG is not NULL, the result is always valid (error() is
2468 called for errors); else, return NULL on error. */
2470 static struct target_ops
*
2471 find_default_run_target (char *do_mesg
)
2473 struct target_ops
**t
;
2474 struct target_ops
*runable
= NULL
;
2479 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2482 if ((*t
)->to_can_run
&& target_can_run (*t
))
2492 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
2501 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
2503 struct target_ops
*t
;
2505 t
= find_default_run_target ("attach");
2506 (t
->to_attach
) (t
, args
, from_tty
);
2511 find_default_create_inferior (struct target_ops
*ops
,
2512 char *exec_file
, char *allargs
, char **env
,
2515 struct target_ops
*t
;
2517 t
= find_default_run_target ("run");
2518 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
2523 find_default_can_async_p (void)
2525 struct target_ops
*t
;
2527 /* This may be called before the target is pushed on the stack;
2528 look for the default process stratum. If there's none, gdb isn't
2529 configured with a native debugger, and target remote isn't
2531 t
= find_default_run_target (NULL
);
2532 if (t
&& t
->to_can_async_p
)
2533 return (t
->to_can_async_p
) ();
2538 find_default_is_async_p (void)
2540 struct target_ops
*t
;
2542 /* This may be called before the target is pushed on the stack;
2543 look for the default process stratum. If there's none, gdb isn't
2544 configured with a native debugger, and target remote isn't
2546 t
= find_default_run_target (NULL
);
2547 if (t
&& t
->to_is_async_p
)
2548 return (t
->to_is_async_p
) ();
2553 find_default_supports_non_stop (void)
2555 struct target_ops
*t
;
2557 t
= find_default_run_target (NULL
);
2558 if (t
&& t
->to_supports_non_stop
)
2559 return (t
->to_supports_non_stop
) ();
2564 target_supports_non_stop (void)
2566 struct target_ops
*t
;
2567 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
2568 if (t
->to_supports_non_stop
)
2569 return t
->to_supports_non_stop ();
2576 target_get_osdata (const char *type
)
2579 struct target_ops
*t
;
2581 /* If we're already connected to something that can get us OS
2582 related data, use it. Otherwise, try using the native
2584 if (current_target
.to_stratum
>= process_stratum
)
2585 t
= current_target
.beneath
;
2587 t
= find_default_run_target ("get OS data");
2592 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
2595 /* Determine the current address space of thread PTID. */
2597 struct address_space
*
2598 target_thread_address_space (ptid_t ptid
)
2600 struct address_space
*aspace
;
2601 struct inferior
*inf
;
2602 struct target_ops
*t
;
2604 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2606 if (t
->to_thread_address_space
!= NULL
)
2608 aspace
= t
->to_thread_address_space (t
, ptid
);
2609 gdb_assert (aspace
);
2612 fprintf_unfiltered (gdb_stdlog
,
2613 "target_thread_address_space (%s) = %d\n",
2614 target_pid_to_str (ptid
),
2615 address_space_num (aspace
));
2620 /* Fall-back to the "main" address space of the inferior. */
2621 inf
= find_inferior_pid (ptid_get_pid (ptid
));
2623 if (inf
== NULL
|| inf
->aspace
== NULL
)
2624 internal_error (__FILE__
, __LINE__
, "\
2625 Can't determine the current address space of thread %s\n",
2626 target_pid_to_str (ptid
));
2632 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
2634 return (len
<= gdbarch_ptr_bit (target_gdbarch
) / TARGET_CHAR_BIT
);
2638 default_watchpoint_addr_within_range (struct target_ops
*target
,
2640 CORE_ADDR start
, int length
)
2642 return addr
>= start
&& addr
< start
+ length
;
2645 static struct gdbarch
*
2646 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
2648 return target_gdbarch
;
2664 return_minus_one (void)
2669 /* Find a single runnable target in the stack and return it. If for
2670 some reason there is more than one, return NULL. */
2673 find_run_target (void)
2675 struct target_ops
**t
;
2676 struct target_ops
*runable
= NULL
;
2681 for (t
= target_structs
; t
< target_structs
+ target_struct_size
; ++t
)
2683 if ((*t
)->to_can_run
&& target_can_run (*t
))
2690 return (count
== 1 ? runable
: NULL
);
2693 /* Find a single core_stratum target in the list of targets and return it.
2694 If for some reason there is more than one, return NULL. */
2697 find_core_target (void)
2699 struct target_ops
**t
;
2700 struct target_ops
*runable
= NULL
;
2705 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2708 if ((*t
)->to_stratum
== core_stratum
)
2715 return (count
== 1 ? runable
: NULL
);
2719 * Find the next target down the stack from the specified target.
2723 find_target_beneath (struct target_ops
*t
)
2729 /* The inferior process has died. Long live the inferior! */
2732 generic_mourn_inferior (void)
2736 ptid
= inferior_ptid
;
2737 inferior_ptid
= null_ptid
;
2739 if (!ptid_equal (ptid
, null_ptid
))
2741 int pid
= ptid_get_pid (ptid
);
2742 exit_inferior (pid
);
2745 breakpoint_init_inferior (inf_exited
);
2746 registers_changed ();
2748 reopen_exec_file ();
2749 reinit_frame_cache ();
2751 if (deprecated_detach_hook
)
2752 deprecated_detach_hook ();
2755 /* Helper function for child_wait and the derivatives of child_wait.
2756 HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
2757 translation of that in OURSTATUS. */
2759 store_waitstatus (struct target_waitstatus
*ourstatus
, int hoststatus
)
2761 if (WIFEXITED (hoststatus
))
2763 ourstatus
->kind
= TARGET_WAITKIND_EXITED
;
2764 ourstatus
->value
.integer
= WEXITSTATUS (hoststatus
);
2766 else if (!WIFSTOPPED (hoststatus
))
2768 ourstatus
->kind
= TARGET_WAITKIND_SIGNALLED
;
2769 ourstatus
->value
.sig
= target_signal_from_host (WTERMSIG (hoststatus
));
2773 ourstatus
->kind
= TARGET_WAITKIND_STOPPED
;
2774 ourstatus
->value
.sig
= target_signal_from_host (WSTOPSIG (hoststatus
));
2778 /* Convert a normal process ID to a string. Returns the string in a
2782 normal_pid_to_str (ptid_t ptid
)
2784 static char buf
[32];
2786 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
2791 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
2793 return normal_pid_to_str (ptid
);
2796 /* Error-catcher for target_find_memory_regions. */
2798 dummy_find_memory_regions (int (*ignore1
) (), void *ignore2
)
2800 error (_("Command not implemented for this target."));
2804 /* Error-catcher for target_make_corefile_notes. */
2806 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
2808 error (_("Command not implemented for this target."));
2812 /* Error-catcher for target_get_bookmark. */
2814 dummy_get_bookmark (char *ignore1
, int ignore2
)
2820 /* Error-catcher for target_goto_bookmark. */
2822 dummy_goto_bookmark (gdb_byte
*ignore
, int from_tty
)
2827 /* Set up the handful of non-empty slots needed by the dummy target
2831 init_dummy_target (void)
2833 dummy_target
.to_shortname
= "None";
2834 dummy_target
.to_longname
= "None";
2835 dummy_target
.to_doc
= "";
2836 dummy_target
.to_attach
= find_default_attach
;
2837 dummy_target
.to_detach
=
2838 (void (*)(struct target_ops
*, char *, int))target_ignore
;
2839 dummy_target
.to_create_inferior
= find_default_create_inferior
;
2840 dummy_target
.to_can_async_p
= find_default_can_async_p
;
2841 dummy_target
.to_is_async_p
= find_default_is_async_p
;
2842 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
2843 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
2844 dummy_target
.to_stratum
= dummy_stratum
;
2845 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
2846 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
2847 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
2848 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
2849 dummy_target
.to_xfer_partial
= default_xfer_partial
;
2850 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
2851 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
2852 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
2853 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
2854 dummy_target
.to_has_execution
= (int (*) (struct target_ops
*)) return_zero
;
2855 dummy_target
.to_stopped_by_watchpoint
= return_zero
;
2856 dummy_target
.to_stopped_data_address
=
2857 (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
;
2858 dummy_target
.to_magic
= OPS_MAGIC
;
2862 debug_to_open (char *args
, int from_tty
)
2864 debug_target
.to_open (args
, from_tty
);
2866 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
2870 target_close (struct target_ops
*targ
, int quitting
)
2872 if (targ
->to_xclose
!= NULL
)
2873 targ
->to_xclose (targ
, quitting
);
2874 else if (targ
->to_close
!= NULL
)
2875 targ
->to_close (quitting
);
2878 fprintf_unfiltered (gdb_stdlog
, "target_close (%d)\n", quitting
);
2882 target_attach (char *args
, int from_tty
)
2884 struct target_ops
*t
;
2885 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2887 if (t
->to_attach
!= NULL
)
2889 t
->to_attach (t
, args
, from_tty
);
2891 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
2897 internal_error (__FILE__
, __LINE__
,
2898 "could not find a target to attach");
2902 target_thread_alive (ptid_t ptid
)
2904 struct target_ops
*t
;
2905 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2907 if (t
->to_thread_alive
!= NULL
)
2911 retval
= t
->to_thread_alive (t
, ptid
);
2913 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
2914 PIDGET (ptid
), retval
);
2924 target_find_new_threads (void)
2926 struct target_ops
*t
;
2927 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2929 if (t
->to_find_new_threads
!= NULL
)
2931 t
->to_find_new_threads (t
);
2933 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
2941 debug_to_post_attach (int pid
)
2943 debug_target
.to_post_attach (pid
);
2945 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
2948 /* Return a pretty printed form of target_waitstatus.
2949 Space for the result is malloc'd, caller must free. */
2952 target_waitstatus_to_string (const struct target_waitstatus
*ws
)
2954 const char *kind_str
= "status->kind = ";
2958 case TARGET_WAITKIND_EXITED
:
2959 return xstrprintf ("%sexited, status = %d",
2960 kind_str
, ws
->value
.integer
);
2961 case TARGET_WAITKIND_STOPPED
:
2962 return xstrprintf ("%sstopped, signal = %s",
2963 kind_str
, target_signal_to_name (ws
->value
.sig
));
2964 case TARGET_WAITKIND_SIGNALLED
:
2965 return xstrprintf ("%ssignalled, signal = %s",
2966 kind_str
, target_signal_to_name (ws
->value
.sig
));
2967 case TARGET_WAITKIND_LOADED
:
2968 return xstrprintf ("%sloaded", kind_str
);
2969 case TARGET_WAITKIND_FORKED
:
2970 return xstrprintf ("%sforked", kind_str
);
2971 case TARGET_WAITKIND_VFORKED
:
2972 return xstrprintf ("%svforked", kind_str
);
2973 case TARGET_WAITKIND_EXECD
:
2974 return xstrprintf ("%sexecd", kind_str
);
2975 case TARGET_WAITKIND_SYSCALL_ENTRY
:
2976 return xstrprintf ("%sentered syscall", kind_str
);
2977 case TARGET_WAITKIND_SYSCALL_RETURN
:
2978 return xstrprintf ("%sexited syscall", kind_str
);
2979 case TARGET_WAITKIND_SPURIOUS
:
2980 return xstrprintf ("%sspurious", kind_str
);
2981 case TARGET_WAITKIND_IGNORE
:
2982 return xstrprintf ("%signore", kind_str
);
2983 case TARGET_WAITKIND_NO_HISTORY
:
2984 return xstrprintf ("%sno-history", kind_str
);
2986 return xstrprintf ("%sunknown???", kind_str
);
2991 debug_print_register (const char * func
,
2992 struct regcache
*regcache
, int regno
)
2994 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
2995 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
2996 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
2997 && gdbarch_register_name (gdbarch
, regno
) != NULL
2998 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
2999 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3000 gdbarch_register_name (gdbarch
, regno
));
3002 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3003 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3005 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3006 int i
, size
= register_size (gdbarch
, regno
);
3007 unsigned char buf
[MAX_REGISTER_SIZE
];
3008 regcache_raw_collect (regcache
, regno
, buf
);
3009 fprintf_unfiltered (gdb_stdlog
, " = ");
3010 for (i
= 0; i
< size
; i
++)
3012 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3014 if (size
<= sizeof (LONGEST
))
3016 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3017 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3018 core_addr_to_string_nz (val
), plongest (val
));
3021 fprintf_unfiltered (gdb_stdlog
, "\n");
3025 target_fetch_registers (struct regcache
*regcache
, int regno
)
3027 struct target_ops
*t
;
3028 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3030 if (t
->to_fetch_registers
!= NULL
)
3032 t
->to_fetch_registers (t
, regcache
, regno
);
3034 debug_print_register ("target_fetch_registers", regcache
, regno
);
3041 target_store_registers (struct regcache
*regcache
, int regno
)
3044 struct target_ops
*t
;
3045 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3047 if (t
->to_store_registers
!= NULL
)
3049 t
->to_store_registers (t
, regcache
, regno
);
3052 debug_print_register ("target_store_registers", regcache
, regno
);
3062 target_core_of_thread (ptid_t ptid
)
3064 struct target_ops
*t
;
3066 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3068 if (t
->to_core_of_thread
!= NULL
)
3070 int retval
= t
->to_core_of_thread (t
, ptid
);
3072 fprintf_unfiltered (gdb_stdlog
, "target_core_of_thread (%d) = %d\n",
3073 PIDGET (ptid
), retval
);
3082 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3084 struct target_ops
*t
;
3086 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3088 if (t
->to_verify_memory
!= NULL
)
3090 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3092 fprintf_unfiltered (gdb_stdlog
, "target_verify_memory (%s, %s) = %d\n",
3093 paddress (target_gdbarch
, memaddr
),
3104 debug_to_prepare_to_store (struct regcache
*regcache
)
3106 debug_target
.to_prepare_to_store (regcache
);
3108 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
3112 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
3113 int write
, struct mem_attrib
*attrib
,
3114 struct target_ops
*target
)
3118 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
3121 fprintf_unfiltered (gdb_stdlog
,
3122 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
3123 paddress (target_gdbarch
, memaddr
), len
,
3124 write
? "write" : "read", retval
);
3130 fputs_unfiltered (", bytes =", gdb_stdlog
);
3131 for (i
= 0; i
< retval
; i
++)
3133 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
3135 if (targetdebug
< 2 && i
> 0)
3137 fprintf_unfiltered (gdb_stdlog
, " ...");
3140 fprintf_unfiltered (gdb_stdlog
, "\n");
3143 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
3147 fputc_unfiltered ('\n', gdb_stdlog
);
3153 debug_to_files_info (struct target_ops
*target
)
3155 debug_target
.to_files_info (target
);
3157 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
3161 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
3162 struct bp_target_info
*bp_tgt
)
3166 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
3168 fprintf_unfiltered (gdb_stdlog
,
3169 "target_insert_breakpoint (0x%lx, xxx) = %ld\n",
3170 (unsigned long) bp_tgt
->placed_address
,
3171 (unsigned long) retval
);
3176 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
3177 struct bp_target_info
*bp_tgt
)
3181 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
3183 fprintf_unfiltered (gdb_stdlog
,
3184 "target_remove_breakpoint (0x%lx, xxx) = %ld\n",
3185 (unsigned long) bp_tgt
->placed_address
,
3186 (unsigned long) retval
);
3191 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
3195 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
3197 fprintf_unfiltered (gdb_stdlog
,
3198 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
3199 (unsigned long) type
,
3200 (unsigned long) cnt
,
3201 (unsigned long) from_tty
,
3202 (unsigned long) retval
);
3207 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3211 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
3213 fprintf_unfiltered (gdb_stdlog
,
3214 "target_region_ok_for_hw_watchpoint (%ld, %ld) = 0x%lx\n",
3215 (unsigned long) addr
,
3216 (unsigned long) len
,
3217 (unsigned long) retval
);
3222 debug_to_stopped_by_watchpoint (void)
3226 retval
= debug_target
.to_stopped_by_watchpoint ();
3228 fprintf_unfiltered (gdb_stdlog
,
3229 "target_stopped_by_watchpoint () = %ld\n",
3230 (unsigned long) retval
);
3235 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
3239 retval
= debug_target
.to_stopped_data_address (target
, addr
);
3241 fprintf_unfiltered (gdb_stdlog
,
3242 "target_stopped_data_address ([0x%lx]) = %ld\n",
3243 (unsigned long)*addr
,
3244 (unsigned long)retval
);
3249 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
3251 CORE_ADDR start
, int length
)
3255 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
3258 fprintf_filtered (gdb_stdlog
,
3259 "target_watchpoint_addr_within_range (0x%lx, 0x%lx, %d) = %d\n",
3260 (unsigned long) addr
, (unsigned long) start
, length
,
3266 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
3267 struct bp_target_info
*bp_tgt
)
3271 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
3273 fprintf_unfiltered (gdb_stdlog
,
3274 "target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n",
3275 (unsigned long) bp_tgt
->placed_address
,
3276 (unsigned long) retval
);
3281 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
3282 struct bp_target_info
*bp_tgt
)
3286 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
3288 fprintf_unfiltered (gdb_stdlog
,
3289 "target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n",
3290 (unsigned long) bp_tgt
->placed_address
,
3291 (unsigned long) retval
);
3296 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
3300 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
);
3302 fprintf_unfiltered (gdb_stdlog
,
3303 "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n",
3304 (unsigned long) addr
, len
, type
, (unsigned long) retval
);
3309 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
3313 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
);
3315 fprintf_unfiltered (gdb_stdlog
,
3316 "target_remove_watchpoint (0x%lx, %d, %d) = %ld\n",
3317 (unsigned long) addr
, len
, type
, (unsigned long) retval
);
3322 debug_to_terminal_init (void)
3324 debug_target
.to_terminal_init ();
3326 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
3330 debug_to_terminal_inferior (void)
3332 debug_target
.to_terminal_inferior ();
3334 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
3338 debug_to_terminal_ours_for_output (void)
3340 debug_target
.to_terminal_ours_for_output ();
3342 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
3346 debug_to_terminal_ours (void)
3348 debug_target
.to_terminal_ours ();
3350 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
3354 debug_to_terminal_save_ours (void)
3356 debug_target
.to_terminal_save_ours ();
3358 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
3362 debug_to_terminal_info (char *arg
, int from_tty
)
3364 debug_target
.to_terminal_info (arg
, from_tty
);
3366 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
3371 debug_to_load (char *args
, int from_tty
)
3373 debug_target
.to_load (args
, from_tty
);
3375 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
3379 debug_to_lookup_symbol (char *name
, CORE_ADDR
*addrp
)
3383 retval
= debug_target
.to_lookup_symbol (name
, addrp
);
3385 fprintf_unfiltered (gdb_stdlog
, "target_lookup_symbol (%s, xxx)\n", name
);
3391 debug_to_post_startup_inferior (ptid_t ptid
)
3393 debug_target
.to_post_startup_inferior (ptid
);
3395 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
3400 debug_to_acknowledge_created_inferior (int pid
)
3402 debug_target
.to_acknowledge_created_inferior (pid
);
3404 fprintf_unfiltered (gdb_stdlog
, "target_acknowledge_created_inferior (%d)\n",
3409 debug_to_insert_fork_catchpoint (int pid
)
3411 debug_target
.to_insert_fork_catchpoint (pid
);
3413 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d)\n",
3418 debug_to_remove_fork_catchpoint (int pid
)
3422 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
3424 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
3431 debug_to_insert_vfork_catchpoint (int pid
)
3433 debug_target
.to_insert_vfork_catchpoint (pid
);
3435 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d)\n",
3440 debug_to_remove_vfork_catchpoint (int pid
)
3444 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
3446 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
3453 debug_to_insert_exec_catchpoint (int pid
)
3455 debug_target
.to_insert_exec_catchpoint (pid
);
3457 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d)\n",
3462 debug_to_remove_exec_catchpoint (int pid
)
3466 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
3468 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
3475 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
3479 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
3481 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
3482 pid
, wait_status
, *exit_status
, has_exited
);
3488 debug_to_can_run (void)
3492 retval
= debug_target
.to_can_run ();
3494 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
3500 debug_to_notice_signals (ptid_t ptid
)
3502 debug_target
.to_notice_signals (ptid
);
3504 fprintf_unfiltered (gdb_stdlog
, "target_notice_signals (%d)\n",
3508 static struct gdbarch
*
3509 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3511 struct gdbarch
*retval
;
3513 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
3515 fprintf_unfiltered (gdb_stdlog
, "target_thread_architecture (%s) = %s [%s]\n",
3516 target_pid_to_str (ptid
), host_address_to_string (retval
),
3517 gdbarch_bfd_arch_info (retval
)->printable_name
);
3522 debug_to_stop (ptid_t ptid
)
3524 debug_target
.to_stop (ptid
);
3526 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
3527 target_pid_to_str (ptid
));
3531 debug_to_rcmd (char *command
,
3532 struct ui_file
*outbuf
)
3534 debug_target
.to_rcmd (command
, outbuf
);
3535 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
3539 debug_to_pid_to_exec_file (int pid
)
3543 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
3545 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
3552 setup_target_debug (void)
3554 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
3556 current_target
.to_open
= debug_to_open
;
3557 current_target
.to_post_attach
= debug_to_post_attach
;
3558 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
3559 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
3560 current_target
.to_files_info
= debug_to_files_info
;
3561 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
3562 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
3563 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
3564 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
3565 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
3566 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
3567 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
3568 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
3569 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
3570 current_target
.to_watchpoint_addr_within_range
= debug_to_watchpoint_addr_within_range
;
3571 current_target
.to_region_ok_for_hw_watchpoint
= debug_to_region_ok_for_hw_watchpoint
;
3572 current_target
.to_terminal_init
= debug_to_terminal_init
;
3573 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
3574 current_target
.to_terminal_ours_for_output
= debug_to_terminal_ours_for_output
;
3575 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
3576 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
3577 current_target
.to_terminal_info
= debug_to_terminal_info
;
3578 current_target
.to_load
= debug_to_load
;
3579 current_target
.to_lookup_symbol
= debug_to_lookup_symbol
;
3580 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
3581 current_target
.to_acknowledge_created_inferior
= debug_to_acknowledge_created_inferior
;
3582 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
3583 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
3584 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
3585 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
3586 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
3587 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
3588 current_target
.to_has_exited
= debug_to_has_exited
;
3589 current_target
.to_can_run
= debug_to_can_run
;
3590 current_target
.to_notice_signals
= debug_to_notice_signals
;
3591 current_target
.to_stop
= debug_to_stop
;
3592 current_target
.to_rcmd
= debug_to_rcmd
;
3593 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
3594 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
3598 static char targ_desc
[] =
3599 "Names of targets and files being debugged.\n\
3600 Shows the entire stack of targets currently in use (including the exec-file,\n\
3601 core-file, and process, if any), as well as the symbol file name.";
3604 do_monitor_command (char *cmd
,
3607 if ((current_target
.to_rcmd
3608 == (void (*) (char *, struct ui_file
*)) tcomplain
)
3609 || (current_target
.to_rcmd
== debug_to_rcmd
3610 && (debug_target
.to_rcmd
3611 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
3612 error (_("\"monitor\" command not supported by this target."));
3613 target_rcmd (cmd
, gdb_stdtarg
);
3616 /* Print the name of each layers of our target stack. */
3619 maintenance_print_target_stack (char *cmd
, int from_tty
)
3621 struct target_ops
*t
;
3623 printf_filtered (_("The current target stack is:\n"));
3625 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3627 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
3631 /* Controls if async mode is permitted. */
3632 int target_async_permitted
= 0;
3634 /* The set command writes to this variable. If the inferior is
3635 executing, linux_nat_async_permitted is *not* updated. */
3636 static int target_async_permitted_1
= 0;
3639 set_maintenance_target_async_permitted (char *args
, int from_tty
,
3640 struct cmd_list_element
*c
)
3642 if (have_live_inferiors ())
3644 target_async_permitted_1
= target_async_permitted
;
3645 error (_("Cannot change this setting while the inferior is running."));
3648 target_async_permitted
= target_async_permitted_1
;
3652 show_maintenance_target_async_permitted (struct ui_file
*file
, int from_tty
,
3653 struct cmd_list_element
*c
,
3656 fprintf_filtered (file
, _("\
3657 Controlling the inferior in asynchronous mode is %s.\n"), value
);
3661 initialize_targets (void)
3663 init_dummy_target ();
3664 push_target (&dummy_target
);
3666 add_info ("target", target_info
, targ_desc
);
3667 add_info ("files", target_info
, targ_desc
);
3669 add_setshow_zinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
3670 Set target debugging."), _("\
3671 Show target debugging."), _("\
3672 When non-zero, target debugging is enabled. Higher numbers are more\n\
3673 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
3677 &setdebuglist
, &showdebuglist
);
3679 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
3680 &trust_readonly
, _("\
3681 Set mode for reading from readonly sections."), _("\
3682 Show mode for reading from readonly sections."), _("\
3683 When this mode is on, memory reads from readonly sections (such as .text)\n\
3684 will be read from the object file instead of from the target. This will\n\
3685 result in significant performance improvement for remote targets."),
3687 show_trust_readonly
,
3688 &setlist
, &showlist
);
3690 add_com ("monitor", class_obscure
, do_monitor_command
,
3691 _("Send a command to the remote monitor (remote targets only)."));
3693 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
3694 _("Print the name of each layer of the internal target stack."),
3695 &maintenanceprintlist
);
3697 add_setshow_boolean_cmd ("target-async", no_class
,
3698 &target_async_permitted_1
, _("\
3699 Set whether gdb controls the inferior in asynchronous mode."), _("\
3700 Show whether gdb controls the inferior in asynchronous mode."), _("\
3701 Tells gdb whether to control the inferior in asynchronous mode."),
3702 set_maintenance_target_async_permitted
,
3703 show_maintenance_target_async_permitted
,
3707 add_setshow_boolean_cmd ("stack-cache", class_support
,
3708 &stack_cache_enabled_p_1
, _("\
3709 Set cache use for stack access."), _("\
3710 Show cache use for stack access."), _("\
3711 When on, use the data cache for all stack access, regardless of any\n\
3712 configured memory regions. This improves remote performance significantly.\n\
3713 By default, caching for stack access is on."),
3714 set_stack_cache_enabled_p
,
3715 show_stack_cache_enabled_p
,
3716 &setlist
, &showlist
);
3718 target_dcache
= dcache_init ();