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
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"
47 static void target_info (char *, int);
49 static void kill_or_be_killed (int);
51 static void default_terminal_info (char *, int);
53 static int default_watchpoint_addr_within_range (struct target_ops
*,
54 CORE_ADDR
, CORE_ADDR
, int);
56 static int default_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
58 static int nosymbol (char *, CORE_ADDR
*);
60 static void tcomplain (void) ATTR_NORETURN
;
62 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
64 static int return_zero (void);
66 static int return_one (void);
68 static int return_minus_one (void);
70 void target_ignore (void);
72 static void target_command (char *, int);
74 static struct target_ops
*find_default_run_target (char *);
76 static void nosupport_runtime (void);
78 static LONGEST
default_xfer_partial (struct target_ops
*ops
,
79 enum target_object object
,
80 const char *annex
, gdb_byte
*readbuf
,
81 const gdb_byte
*writebuf
,
82 ULONGEST offset
, LONGEST len
);
84 static LONGEST
current_xfer_partial (struct target_ops
*ops
,
85 enum target_object object
,
86 const char *annex
, gdb_byte
*readbuf
,
87 const gdb_byte
*writebuf
,
88 ULONGEST offset
, LONGEST len
);
90 static LONGEST
target_xfer_partial (struct target_ops
*ops
,
91 enum target_object object
,
93 void *readbuf
, const void *writebuf
,
94 ULONGEST offset
, LONGEST len
);
96 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
99 static void init_dummy_target (void);
101 static struct target_ops debug_target
;
103 static void debug_to_open (char *, int);
105 static void debug_to_prepare_to_store (struct regcache
*);
107 static void debug_to_files_info (struct target_ops
*);
109 static int debug_to_insert_breakpoint (struct gdbarch
*,
110 struct bp_target_info
*);
112 static int debug_to_remove_breakpoint (struct gdbarch
*,
113 struct bp_target_info
*);
115 static int debug_to_can_use_hw_breakpoint (int, int, int);
117 static int debug_to_insert_hw_breakpoint (struct gdbarch
*,
118 struct bp_target_info
*);
120 static int debug_to_remove_hw_breakpoint (struct gdbarch
*,
121 struct bp_target_info
*);
123 static int debug_to_insert_watchpoint (CORE_ADDR
, int, int);
125 static int debug_to_remove_watchpoint (CORE_ADDR
, int, int);
127 static int debug_to_stopped_by_watchpoint (void);
129 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
131 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
132 CORE_ADDR
, CORE_ADDR
, int);
134 static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
136 static void debug_to_terminal_init (void);
138 static void debug_to_terminal_inferior (void);
140 static void debug_to_terminal_ours_for_output (void);
142 static void debug_to_terminal_save_ours (void);
144 static void debug_to_terminal_ours (void);
146 static void debug_to_terminal_info (char *, int);
148 static void debug_to_load (char *, int);
150 static int debug_to_lookup_symbol (char *, CORE_ADDR
*);
152 static int debug_to_can_run (void);
154 static void debug_to_notice_signals (ptid_t
);
156 static void debug_to_stop (ptid_t
);
158 /* NOTE: cagney/2004-09-29: Many targets reference this variable in
159 wierd and mysterious ways. Putting the variable here lets those
160 wierd and mysterious ways keep building while they are being
161 converted to the inferior inheritance structure. */
162 struct target_ops deprecated_child_ops
;
164 /* Pointer to array of target architecture structures; the size of the
165 array; the current index into the array; the allocated size of the
167 struct target_ops
**target_structs
;
168 unsigned target_struct_size
;
169 unsigned target_struct_index
;
170 unsigned target_struct_allocsize
;
171 #define DEFAULT_ALLOCSIZE 10
173 /* The initial current target, so that there is always a semi-valid
176 static struct target_ops dummy_target
;
178 /* Top of target stack. */
180 static struct target_ops
*target_stack
;
182 /* The target structure we are currently using to talk to a process
183 or file or whatever "inferior" we have. */
185 struct target_ops current_target
;
187 /* Command list for target. */
189 static struct cmd_list_element
*targetlist
= NULL
;
191 /* Nonzero if we should trust readonly sections from the
192 executable when reading memory. */
194 static int trust_readonly
= 0;
196 /* Nonzero if we should show true memory content including
197 memory breakpoint inserted by gdb. */
199 static int show_memory_breakpoints
= 0;
201 /* Non-zero if we want to see trace of target level stuff. */
203 static int targetdebug
= 0;
205 show_targetdebug (struct ui_file
*file
, int from_tty
,
206 struct cmd_list_element
*c
, const char *value
)
208 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
211 static void setup_target_debug (void);
213 /* The option sets this. */
214 static int stack_cache_enabled_p_1
= 1;
215 /* And set_stack_cache_enabled_p updates this.
216 The reason for the separation is so that we don't flush the cache for
217 on->on transitions. */
218 static int stack_cache_enabled_p
= 1;
220 /* This is called *after* the stack-cache has been set.
221 Flush the cache for off->on and on->off transitions.
222 There's no real need to flush the cache for on->off transitions,
223 except cleanliness. */
226 set_stack_cache_enabled_p (char *args
, int from_tty
,
227 struct cmd_list_element
*c
)
229 if (stack_cache_enabled_p
!= stack_cache_enabled_p_1
)
230 target_dcache_invalidate ();
232 stack_cache_enabled_p
= stack_cache_enabled_p_1
;
236 show_stack_cache_enabled_p (struct ui_file
*file
, int from_tty
,
237 struct cmd_list_element
*c
, const char *value
)
239 fprintf_filtered (file
, _("Cache use for stack accesses is %s.\n"), value
);
242 /* Cache of memory operations, to speed up remote access. */
243 static DCACHE
*target_dcache
;
245 /* Invalidate the target dcache. */
248 target_dcache_invalidate (void)
250 dcache_invalidate (target_dcache
);
253 /* The user just typed 'target' without the name of a target. */
256 target_command (char *arg
, int from_tty
)
258 fputs_filtered ("Argument required (target name). Try `help target'\n",
262 /* Default target_has_* methods for process_stratum targets. */
265 default_child_has_all_memory (struct target_ops
*ops
)
267 /* If no inferior selected, then we can't read memory here. */
268 if (ptid_equal (inferior_ptid
, null_ptid
))
275 default_child_has_memory (struct target_ops
*ops
)
277 /* If no inferior selected, then we can't read memory here. */
278 if (ptid_equal (inferior_ptid
, null_ptid
))
285 default_child_has_stack (struct target_ops
*ops
)
287 /* If no inferior selected, there's no stack. */
288 if (ptid_equal (inferior_ptid
, null_ptid
))
295 default_child_has_registers (struct target_ops
*ops
)
297 /* Can't read registers from no inferior. */
298 if (ptid_equal (inferior_ptid
, null_ptid
))
305 default_child_has_execution (struct target_ops
*ops
)
307 /* If there's no thread selected, then we can't make it run through
309 if (ptid_equal (inferior_ptid
, null_ptid
))
317 target_has_all_memory_1 (void)
319 struct target_ops
*t
;
321 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
322 if (t
->to_has_all_memory (t
))
329 target_has_memory_1 (void)
331 struct target_ops
*t
;
333 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
334 if (t
->to_has_memory (t
))
341 target_has_stack_1 (void)
343 struct target_ops
*t
;
345 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
346 if (t
->to_has_stack (t
))
353 target_has_registers_1 (void)
355 struct target_ops
*t
;
357 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
358 if (t
->to_has_registers (t
))
365 target_has_execution_1 (void)
367 struct target_ops
*t
;
369 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
370 if (t
->to_has_execution (t
))
376 /* Add a possible target architecture to the list. */
379 add_target (struct target_ops
*t
)
381 /* Provide default values for all "must have" methods. */
382 if (t
->to_xfer_partial
== NULL
)
383 t
->to_xfer_partial
= default_xfer_partial
;
385 if (t
->to_has_all_memory
== NULL
)
386 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
388 if (t
->to_has_memory
== NULL
)
389 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
391 if (t
->to_has_stack
== NULL
)
392 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
394 if (t
->to_has_registers
== NULL
)
395 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
397 if (t
->to_has_execution
== NULL
)
398 t
->to_has_execution
= (int (*) (struct target_ops
*)) return_zero
;
402 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
403 target_structs
= (struct target_ops
**) xmalloc
404 (target_struct_allocsize
* sizeof (*target_structs
));
406 if (target_struct_size
>= target_struct_allocsize
)
408 target_struct_allocsize
*= 2;
409 target_structs
= (struct target_ops
**)
410 xrealloc ((char *) target_structs
,
411 target_struct_allocsize
* sizeof (*target_structs
));
413 target_structs
[target_struct_size
++] = t
;
415 if (targetlist
== NULL
)
416 add_prefix_cmd ("target", class_run
, target_command
, _("\
417 Connect to a target machine or process.\n\
418 The first argument is the type or protocol of the target machine.\n\
419 Remaining arguments are interpreted by the target protocol. For more\n\
420 information on the arguments for a particular protocol, type\n\
421 `help target ' followed by the protocol name."),
422 &targetlist
, "target ", 0, &cmdlist
);
423 add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
436 struct target_ops
*t
;
438 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
439 if (t
->to_kill
!= NULL
)
442 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
452 target_load (char *arg
, int from_tty
)
454 target_dcache_invalidate ();
455 (*current_target
.to_load
) (arg
, from_tty
);
459 target_create_inferior (char *exec_file
, char *args
,
460 char **env
, int from_tty
)
462 struct target_ops
*t
;
463 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
465 if (t
->to_create_inferior
!= NULL
)
467 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
469 fprintf_unfiltered (gdb_stdlog
,
470 "target_create_inferior (%s, %s, xxx, %d)\n",
471 exec_file
, args
, from_tty
);
476 internal_error (__FILE__
, __LINE__
,
477 "could not find a target to create inferior");
481 target_terminal_inferior (void)
483 /* A background resume (``run&'') should leave GDB in control of the
485 if (target_is_async_p () && !sync_execution
)
488 /* If GDB is resuming the inferior in the foreground, install
489 inferior's terminal modes. */
490 (*current_target
.to_terminal_inferior
) ();
494 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
495 struct target_ops
*t
)
497 errno
= EIO
; /* Can't read/write this location */
498 return 0; /* No bytes handled */
504 error (_("You can't do that when your target is `%s'"),
505 current_target
.to_shortname
);
511 error (_("You can't do that without a process to debug."));
515 nosymbol (char *name
, CORE_ADDR
*addrp
)
517 return 1; /* Symbol does not exist in target env */
521 nosupport_runtime (void)
523 if (ptid_equal (inferior_ptid
, null_ptid
))
526 error (_("No run-time support for this"));
531 default_terminal_info (char *args
, int from_tty
)
533 printf_unfiltered (_("No saved terminal information.\n"));
536 /* This is the default target_create_inferior and target_attach function.
537 If the current target is executing, it asks whether to kill it off.
538 If this function returns without calling error(), it has killed off
539 the target, and the operation should be attempted. */
542 kill_or_be_killed (int from_tty
)
544 if (target_has_execution
)
546 printf_unfiltered (_("You are already running a program:\n"));
547 target_files_info ();
548 if (query (_("Kill it? ")))
551 if (target_has_execution
)
552 error (_("Killing the program did not help."));
557 error (_("Program not killed."));
563 /* A default implementation for the to_get_ada_task_ptid target method.
565 This function builds the PTID by using both LWP and TID as part of
566 the PTID lwp and tid elements. The pid used is the pid of the
570 default_get_ada_task_ptid (long lwp
, long tid
)
572 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
575 /* Go through the target stack from top to bottom, copying over zero
576 entries in current_target, then filling in still empty entries. In
577 effect, we are doing class inheritance through the pushed target
580 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
581 is currently implemented, is that it discards any knowledge of
582 which target an inherited method originally belonged to.
583 Consequently, new new target methods should instead explicitly and
584 locally search the target stack for the target that can handle the
588 update_current_target (void)
590 struct target_ops
*t
;
592 /* First, reset current's contents. */
593 memset (¤t_target
, 0, sizeof (current_target
));
595 #define INHERIT(FIELD, TARGET) \
596 if (!current_target.FIELD) \
597 current_target.FIELD = (TARGET)->FIELD
599 for (t
= target_stack
; t
; t
= t
->beneath
)
601 INHERIT (to_shortname
, t
);
602 INHERIT (to_longname
, t
);
604 /* Do not inherit to_open. */
605 /* Do not inherit to_close. */
606 /* Do not inherit to_attach. */
607 INHERIT (to_post_attach
, t
);
608 INHERIT (to_attach_no_wait
, t
);
609 /* Do not inherit to_detach. */
610 /* Do not inherit to_disconnect. */
611 /* Do not inherit to_resume. */
612 /* Do not inherit to_wait. */
613 /* Do not inherit to_fetch_registers. */
614 /* Do not inherit to_store_registers. */
615 INHERIT (to_prepare_to_store
, t
);
616 INHERIT (deprecated_xfer_memory
, t
);
617 INHERIT (to_files_info
, t
);
618 INHERIT (to_insert_breakpoint
, t
);
619 INHERIT (to_remove_breakpoint
, t
);
620 INHERIT (to_can_use_hw_breakpoint
, t
);
621 INHERIT (to_insert_hw_breakpoint
, t
);
622 INHERIT (to_remove_hw_breakpoint
, t
);
623 INHERIT (to_insert_watchpoint
, t
);
624 INHERIT (to_remove_watchpoint
, t
);
625 INHERIT (to_stopped_data_address
, t
);
626 INHERIT (to_have_steppable_watchpoint
, t
);
627 INHERIT (to_have_continuable_watchpoint
, t
);
628 INHERIT (to_stopped_by_watchpoint
, t
);
629 INHERIT (to_watchpoint_addr_within_range
, t
);
630 INHERIT (to_region_ok_for_hw_watchpoint
, t
);
631 INHERIT (to_terminal_init
, t
);
632 INHERIT (to_terminal_inferior
, t
);
633 INHERIT (to_terminal_ours_for_output
, t
);
634 INHERIT (to_terminal_ours
, t
);
635 INHERIT (to_terminal_save_ours
, t
);
636 INHERIT (to_terminal_info
, t
);
637 /* Do not inherit to_kill. */
638 INHERIT (to_load
, t
);
639 INHERIT (to_lookup_symbol
, t
);
640 /* Do no inherit to_create_inferior. */
641 INHERIT (to_post_startup_inferior
, t
);
642 INHERIT (to_acknowledge_created_inferior
, t
);
643 INHERIT (to_insert_fork_catchpoint
, t
);
644 INHERIT (to_remove_fork_catchpoint
, t
);
645 INHERIT (to_insert_vfork_catchpoint
, t
);
646 INHERIT (to_remove_vfork_catchpoint
, t
);
647 /* Do not inherit to_follow_fork. */
648 INHERIT (to_insert_exec_catchpoint
, t
);
649 INHERIT (to_remove_exec_catchpoint
, t
);
650 INHERIT (to_set_syscall_catchpoint
, t
);
651 INHERIT (to_has_exited
, t
);
652 /* Do not inherit to_mourn_inferiour. */
653 INHERIT (to_can_run
, t
);
654 INHERIT (to_notice_signals
, t
);
655 /* Do not inherit to_thread_alive. */
656 /* Do not inherit to_find_new_threads. */
657 /* Do not inherit to_pid_to_str. */
658 INHERIT (to_extra_thread_info
, t
);
659 INHERIT (to_stop
, t
);
660 /* Do not inherit to_xfer_partial. */
661 INHERIT (to_rcmd
, t
);
662 INHERIT (to_pid_to_exec_file
, t
);
663 INHERIT (to_log_command
, t
);
664 INHERIT (to_stratum
, t
);
665 /* Do not inherit to_has_all_memory */
666 /* Do not inherit to_has_memory */
667 /* Do not inherit to_has_stack */
668 /* Do not inherit to_has_registers */
669 /* Do not inherit to_has_execution */
670 INHERIT (to_has_thread_control
, t
);
671 INHERIT (to_can_async_p
, t
);
672 INHERIT (to_is_async_p
, t
);
673 INHERIT (to_async
, t
);
674 INHERIT (to_async_mask
, t
);
675 INHERIT (to_find_memory_regions
, t
);
676 INHERIT (to_make_corefile_notes
, t
);
677 /* Do not inherit to_get_thread_local_address. */
678 INHERIT (to_can_execute_reverse
, t
);
679 INHERIT (to_thread_architecture
, t
);
680 /* Do not inherit to_read_description. */
681 INHERIT (to_get_ada_task_ptid
, t
);
682 /* Do not inherit to_search_memory. */
683 INHERIT (to_supports_multi_process
, t
);
684 INHERIT (to_magic
, t
);
685 /* Do not inherit to_memory_map. */
686 /* Do not inherit to_flash_erase. */
687 /* Do not inherit to_flash_done. */
691 /* Clean up a target struct so it no longer has any zero pointers in
692 it. Some entries are defaulted to a method that print an error,
693 others are hard-wired to a standard recursive default. */
695 #define de_fault(field, value) \
696 if (!current_target.field) \
697 current_target.field = value
700 (void (*) (char *, int))
705 de_fault (to_post_attach
,
708 de_fault (to_prepare_to_store
,
709 (void (*) (struct regcache
*))
711 de_fault (deprecated_xfer_memory
,
712 (int (*) (CORE_ADDR
, gdb_byte
*, int, int, struct mem_attrib
*, struct target_ops
*))
714 de_fault (to_files_info
,
715 (void (*) (struct target_ops
*))
717 de_fault (to_insert_breakpoint
,
718 memory_insert_breakpoint
);
719 de_fault (to_remove_breakpoint
,
720 memory_remove_breakpoint
);
721 de_fault (to_can_use_hw_breakpoint
,
722 (int (*) (int, int, int))
724 de_fault (to_insert_hw_breakpoint
,
725 (int (*) (struct gdbarch
*, struct bp_target_info
*))
727 de_fault (to_remove_hw_breakpoint
,
728 (int (*) (struct gdbarch
*, struct bp_target_info
*))
730 de_fault (to_insert_watchpoint
,
731 (int (*) (CORE_ADDR
, int, int))
733 de_fault (to_remove_watchpoint
,
734 (int (*) (CORE_ADDR
, int, int))
736 de_fault (to_stopped_by_watchpoint
,
739 de_fault (to_stopped_data_address
,
740 (int (*) (struct target_ops
*, CORE_ADDR
*))
742 de_fault (to_watchpoint_addr_within_range
,
743 default_watchpoint_addr_within_range
);
744 de_fault (to_region_ok_for_hw_watchpoint
,
745 default_region_ok_for_hw_watchpoint
);
746 de_fault (to_terminal_init
,
749 de_fault (to_terminal_inferior
,
752 de_fault (to_terminal_ours_for_output
,
755 de_fault (to_terminal_ours
,
758 de_fault (to_terminal_save_ours
,
761 de_fault (to_terminal_info
,
762 default_terminal_info
);
764 (void (*) (char *, int))
766 de_fault (to_lookup_symbol
,
767 (int (*) (char *, CORE_ADDR
*))
769 de_fault (to_post_startup_inferior
,
772 de_fault (to_acknowledge_created_inferior
,
775 de_fault (to_insert_fork_catchpoint
,
778 de_fault (to_remove_fork_catchpoint
,
781 de_fault (to_insert_vfork_catchpoint
,
784 de_fault (to_remove_vfork_catchpoint
,
787 de_fault (to_insert_exec_catchpoint
,
790 de_fault (to_remove_exec_catchpoint
,
793 de_fault (to_set_syscall_catchpoint
,
794 (int (*) (int, int, int, int, int *))
796 de_fault (to_has_exited
,
797 (int (*) (int, int, int *))
799 de_fault (to_can_run
,
801 de_fault (to_notice_signals
,
804 de_fault (to_extra_thread_info
,
805 (char *(*) (struct thread_info
*))
810 current_target
.to_xfer_partial
= current_xfer_partial
;
812 (void (*) (char *, struct ui_file
*))
814 de_fault (to_pid_to_exec_file
,
818 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
820 de_fault (to_async_mask
,
823 de_fault (to_thread_architecture
,
824 default_thread_architecture
);
825 current_target
.to_read_description
= NULL
;
826 de_fault (to_get_ada_task_ptid
,
827 (ptid_t (*) (long, long))
828 default_get_ada_task_ptid
);
829 de_fault (to_supports_multi_process
,
834 /* Finally, position the target-stack beneath the squashed
835 "current_target". That way code looking for a non-inherited
836 target method can quickly and simply find it. */
837 current_target
.beneath
= target_stack
;
840 setup_target_debug ();
843 /* Push a new target type into the stack of the existing target accessors,
844 possibly superseding some of the existing accessors.
846 Result is zero if the pushed target ended up on top of the stack,
847 nonzero if at least one target is on top of it.
849 Rather than allow an empty stack, we always have the dummy target at
850 the bottom stratum, so we can call the function vectors without
854 push_target (struct target_ops
*t
)
856 struct target_ops
**cur
;
858 /* Check magic number. If wrong, it probably means someone changed
859 the struct definition, but not all the places that initialize one. */
860 if (t
->to_magic
!= OPS_MAGIC
)
862 fprintf_unfiltered (gdb_stderr
,
863 "Magic number of %s target struct wrong\n",
865 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
868 /* Find the proper stratum to install this target in. */
869 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
871 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
875 /* If there's already targets at this stratum, remove them. */
876 /* FIXME: cagney/2003-10-15: I think this should be popping all
877 targets to CUR, and not just those at this stratum level. */
878 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
880 /* There's already something at this stratum level. Close it,
881 and un-hook it from the stack. */
882 struct target_ops
*tmp
= (*cur
);
883 (*cur
) = (*cur
)->beneath
;
885 target_close (tmp
, 0);
888 /* We have removed all targets in our stratum, now add the new one. */
892 update_current_target ();
895 return (t
!= target_stack
);
898 /* Remove a target_ops vector from the stack, wherever it may be.
899 Return how many times it was removed (0 or 1). */
902 unpush_target (struct target_ops
*t
)
904 struct target_ops
**cur
;
905 struct target_ops
*tmp
;
907 if (t
->to_stratum
== dummy_stratum
)
908 internal_error (__FILE__
, __LINE__
,
909 "Attempt to unpush the dummy target");
911 /* Look for the specified target. Note that we assume that a target
912 can only occur once in the target stack. */
914 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
921 return 0; /* Didn't find target_ops, quit now */
923 /* NOTE: cagney/2003-12-06: In '94 the close call was made
924 unconditional by moving it to before the above check that the
925 target was in the target stack (something about "Change the way
926 pushing and popping of targets work to support target overlays
927 and inheritance"). This doesn't make much sense - only open
928 targets should be closed. */
931 /* Unchain the target */
933 (*cur
) = (*cur
)->beneath
;
936 update_current_target ();
944 target_close (target_stack
, 0); /* Let it clean up */
945 if (unpush_target (target_stack
) == 1)
948 fprintf_unfiltered (gdb_stderr
,
949 "pop_target couldn't find target %s\n",
950 current_target
.to_shortname
);
951 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
955 pop_all_targets_above (enum strata above_stratum
, int quitting
)
957 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
959 target_close (target_stack
, quitting
);
960 if (!unpush_target (target_stack
))
962 fprintf_unfiltered (gdb_stderr
,
963 "pop_all_targets couldn't find target %s\n",
964 target_stack
->to_shortname
);
965 internal_error (__FILE__
, __LINE__
,
966 _("failed internal consistency check"));
973 pop_all_targets (int quitting
)
975 pop_all_targets_above (dummy_stratum
, quitting
);
978 /* Using the objfile specified in OBJFILE, find the address for the
979 current thread's thread-local storage with offset OFFSET. */
981 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
983 volatile CORE_ADDR addr
= 0;
984 struct target_ops
*target
;
986 for (target
= current_target
.beneath
;
988 target
= target
->beneath
)
990 if (target
->to_get_thread_local_address
!= NULL
)
995 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch
))
997 ptid_t ptid
= inferior_ptid
;
998 volatile struct gdb_exception ex
;
1000 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1004 /* Fetch the load module address for this objfile. */
1005 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch
,
1007 /* If it's 0, throw the appropriate exception. */
1009 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1010 _("TLS load module not found"));
1012 addr
= target
->to_get_thread_local_address (target
, ptid
, lm_addr
, offset
);
1014 /* If an error occurred, print TLS related messages here. Otherwise,
1015 throw the error to some higher catcher. */
1018 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1022 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1023 error (_("Cannot find thread-local variables in this thread library."));
1025 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1026 if (objfile_is_library
)
1027 error (_("Cannot find shared library `%s' in dynamic"
1028 " linker's load module list"), objfile
->name
);
1030 error (_("Cannot find executable file `%s' in dynamic"
1031 " linker's load module list"), objfile
->name
);
1033 case TLS_NOT_ALLOCATED_YET_ERROR
:
1034 if (objfile_is_library
)
1035 error (_("The inferior has not yet allocated storage for"
1036 " thread-local variables in\n"
1037 "the shared library `%s'\n"
1039 objfile
->name
, target_pid_to_str (ptid
));
1041 error (_("The inferior has not yet allocated storage for"
1042 " thread-local variables in\n"
1043 "the executable `%s'\n"
1045 objfile
->name
, target_pid_to_str (ptid
));
1047 case TLS_GENERIC_ERROR
:
1048 if (objfile_is_library
)
1049 error (_("Cannot find thread-local storage for %s, "
1050 "shared library %s:\n%s"),
1051 target_pid_to_str (ptid
),
1052 objfile
->name
, ex
.message
);
1054 error (_("Cannot find thread-local storage for %s, "
1055 "executable file %s:\n%s"),
1056 target_pid_to_str (ptid
),
1057 objfile
->name
, ex
.message
);
1060 throw_exception (ex
);
1065 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1066 TLS is an ABI-specific thing. But we don't do that yet. */
1068 error (_("Cannot find thread-local variables on this target"));
1074 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1076 /* target_read_string -- read a null terminated string, up to LEN bytes,
1077 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1078 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1079 is responsible for freeing it. Return the number of bytes successfully
1083 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1085 int tlen
, origlen
, offset
, i
;
1089 int buffer_allocated
;
1091 unsigned int nbytes_read
= 0;
1093 gdb_assert (string
);
1095 /* Small for testing. */
1096 buffer_allocated
= 4;
1097 buffer
= xmalloc (buffer_allocated
);
1104 tlen
= MIN (len
, 4 - (memaddr
& 3));
1105 offset
= memaddr
& 3;
1107 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1110 /* The transfer request might have crossed the boundary to an
1111 unallocated region of memory. Retry the transfer, requesting
1115 errcode
= target_read_memory (memaddr
, buf
, 1);
1120 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1123 bytes
= bufptr
- buffer
;
1124 buffer_allocated
*= 2;
1125 buffer
= xrealloc (buffer
, buffer_allocated
);
1126 bufptr
= buffer
+ bytes
;
1129 for (i
= 0; i
< tlen
; i
++)
1131 *bufptr
++ = buf
[i
+ offset
];
1132 if (buf
[i
+ offset
] == '\000')
1134 nbytes_read
+= i
+ 1;
1141 nbytes_read
+= tlen
;
1150 struct target_section_table
*
1151 target_get_section_table (struct target_ops
*target
)
1153 struct target_ops
*t
;
1156 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1158 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1159 if (t
->to_get_section_table
!= NULL
)
1160 return (*t
->to_get_section_table
) (t
);
1165 /* Find a section containing ADDR. */
1167 struct target_section
*
1168 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1170 struct target_section_table
*table
= target_get_section_table (target
);
1171 struct target_section
*secp
;
1176 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1178 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1184 /* Perform a partial memory transfer.
1185 For docs see target.h, to_xfer_partial. */
1188 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1189 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1194 struct mem_region
*region
;
1195 struct inferior
*inf
;
1197 /* Zero length requests are ok and require no work. */
1201 /* For accesses to unmapped overlay sections, read directly from
1202 files. Must do this first, as MEMADDR may need adjustment. */
1203 if (readbuf
!= NULL
&& overlay_debugging
)
1205 struct obj_section
*section
= find_pc_overlay (memaddr
);
1206 if (pc_in_unmapped_range (memaddr
, section
))
1208 struct target_section_table
*table
1209 = target_get_section_table (ops
);
1210 const char *section_name
= section
->the_bfd_section
->name
;
1211 memaddr
= overlay_mapped_address (memaddr
, section
);
1212 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1215 table
->sections_end
,
1220 /* Try the executable files, if "trust-readonly-sections" is set. */
1221 if (readbuf
!= NULL
&& trust_readonly
)
1223 struct target_section
*secp
;
1224 struct target_section_table
*table
;
1226 secp
= target_section_by_addr (ops
, memaddr
);
1228 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1231 table
= target_get_section_table (ops
);
1232 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1235 table
->sections_end
,
1240 /* Try GDB's internal data cache. */
1241 region
= lookup_mem_region (memaddr
);
1242 /* region->hi == 0 means there's no upper bound. */
1243 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1246 reg_len
= region
->hi
- memaddr
;
1248 switch (region
->attrib
.mode
)
1251 if (writebuf
!= NULL
)
1256 if (readbuf
!= NULL
)
1261 /* We only support writing to flash during "load" for now. */
1262 if (writebuf
!= NULL
)
1263 error (_("Writing to flash memory forbidden in this context"));
1270 if (!ptid_equal (inferior_ptid
, null_ptid
))
1271 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1276 && (region
->attrib
.cache
1277 || (stack_cache_enabled_p
&& object
== TARGET_OBJECT_STACK_MEMORY
)))
1279 if (readbuf
!= NULL
)
1280 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
, readbuf
,
1283 /* FIXME drow/2006-08-09: If we're going to preserve const
1284 correctness dcache_xfer_memory should take readbuf and
1286 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
,
1293 if (readbuf
&& !show_memory_breakpoints
)
1294 breakpoint_restore_shadows (readbuf
, memaddr
, reg_len
);
1299 /* If none of those methods found the memory we wanted, fall back
1300 to a target partial transfer. Normally a single call to
1301 to_xfer_partial is enough; if it doesn't recognize an object
1302 it will call the to_xfer_partial of the next target down.
1303 But for memory this won't do. Memory is the only target
1304 object which can be read from more than one valid target.
1305 A core file, for instance, could have some of memory but
1306 delegate other bits to the target below it. So, we must
1307 manually try all targets. */
1311 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1312 readbuf
, writebuf
, memaddr
, reg_len
);
1316 /* We want to continue past core files to executables, but not
1317 past a running target's memory. */
1318 if (ops
->to_has_all_memory (ops
))
1323 while (ops
!= NULL
);
1325 if (readbuf
&& !show_memory_breakpoints
)
1326 breakpoint_restore_shadows (readbuf
, memaddr
, reg_len
);
1328 /* Make sure the cache gets updated no matter what - if we are writing
1329 to the stack. Even if this write is not tagged as such, we still need
1330 to update the cache. */
1335 && !region
->attrib
.cache
1336 && stack_cache_enabled_p
1337 && object
!= TARGET_OBJECT_STACK_MEMORY
)
1339 dcache_update (target_dcache
, memaddr
, (void *) writebuf
, res
);
1342 /* If we still haven't got anything, return the last error. We
1348 restore_show_memory_breakpoints (void *arg
)
1350 show_memory_breakpoints
= (uintptr_t) arg
;
1354 make_show_memory_breakpoints_cleanup (int show
)
1356 int current
= show_memory_breakpoints
;
1357 show_memory_breakpoints
= show
;
1359 return make_cleanup (restore_show_memory_breakpoints
,
1360 (void *) (uintptr_t) current
);
1363 /* For docs see target.h, to_xfer_partial. */
1366 target_xfer_partial (struct target_ops
*ops
,
1367 enum target_object object
, const char *annex
,
1368 void *readbuf
, const void *writebuf
,
1369 ULONGEST offset
, LONGEST len
)
1373 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1375 /* If this is a memory transfer, let the memory-specific code
1376 have a look at it instead. Memory transfers are more
1378 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
)
1379 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1380 writebuf
, offset
, len
);
1383 enum target_object raw_object
= object
;
1385 /* If this is a raw memory transfer, request the normal
1386 memory object from other layers. */
1387 if (raw_object
== TARGET_OBJECT_RAW_MEMORY
)
1388 raw_object
= TARGET_OBJECT_MEMORY
;
1390 retval
= ops
->to_xfer_partial (ops
, raw_object
, annex
, readbuf
,
1391 writebuf
, offset
, len
);
1396 const unsigned char *myaddr
= NULL
;
1398 fprintf_unfiltered (gdb_stdlog
,
1399 "%s:target_xfer_partial (%d, %s, %s, %s, %s, %s) = %s",
1402 (annex
? annex
: "(null)"),
1403 host_address_to_string (readbuf
),
1404 host_address_to_string (writebuf
),
1405 core_addr_to_string_nz (offset
),
1406 plongest (len
), plongest (retval
));
1412 if (retval
> 0 && myaddr
!= NULL
)
1416 fputs_unfiltered (", bytes =", gdb_stdlog
);
1417 for (i
= 0; i
< retval
; i
++)
1419 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1421 if (targetdebug
< 2 && i
> 0)
1423 fprintf_unfiltered (gdb_stdlog
, " ...");
1426 fprintf_unfiltered (gdb_stdlog
, "\n");
1429 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1433 fputc_unfiltered ('\n', gdb_stdlog
);
1438 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
1439 GDB's memory at MYADDR. Returns either 0 for success or an errno value
1440 if any error occurs.
1442 If an error occurs, no guarantee is made about the contents of the data at
1443 MYADDR. In particular, the caller should not depend upon partial reads
1444 filling the buffer with good data. There is no way for the caller to know
1445 how much good data might have been transfered anyway. Callers that can
1446 deal with partial reads should call target_read (which will retry until
1447 it makes no progress, and then return how much was transferred). */
1450 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
1452 /* Dispatch to the topmost target, not the flattened current_target.
1453 Memory accesses check target->to_has_(all_)memory, and the
1454 flattened target doesn't inherit those. */
1455 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1456 myaddr
, memaddr
, len
) == len
)
1462 /* Like target_read_memory, but specify explicitly that this is a read from
1463 the target's stack. This may trigger different cache behavior. */
1466 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
1468 /* Dispatch to the topmost target, not the flattened current_target.
1469 Memory accesses check target->to_has_(all_)memory, and the
1470 flattened target doesn't inherit those. */
1472 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1473 myaddr
, memaddr
, len
) == len
)
1479 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1480 Returns either 0 for success or an errno value if any error occurs.
1481 If an error occurs, no guarantee is made about how much data got written.
1482 Callers that can deal with partial writes should call target_write. */
1485 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
1487 /* Dispatch to the topmost target, not the flattened current_target.
1488 Memory accesses check target->to_has_(all_)memory, and the
1489 flattened target doesn't inherit those. */
1490 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1491 myaddr
, memaddr
, len
) == len
)
1497 /* Fetch the target's memory map. */
1500 target_memory_map (void)
1502 VEC(mem_region_s
) *result
;
1503 struct mem_region
*last_one
, *this_one
;
1505 struct target_ops
*t
;
1508 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1510 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1511 if (t
->to_memory_map
!= NULL
)
1517 result
= t
->to_memory_map (t
);
1521 qsort (VEC_address (mem_region_s
, result
),
1522 VEC_length (mem_region_s
, result
),
1523 sizeof (struct mem_region
), mem_region_cmp
);
1525 /* Check that regions do not overlap. Simultaneously assign
1526 a numbering for the "mem" commands to use to refer to
1529 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1531 this_one
->number
= ix
;
1533 if (last_one
&& last_one
->hi
> this_one
->lo
)
1535 warning (_("Overlapping regions in memory map: ignoring"));
1536 VEC_free (mem_region_s
, result
);
1539 last_one
= this_one
;
1546 target_flash_erase (ULONGEST address
, LONGEST length
)
1548 struct target_ops
*t
;
1550 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1551 if (t
->to_flash_erase
!= NULL
)
1554 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1555 hex_string (address
), phex (length
, 0));
1556 t
->to_flash_erase (t
, address
, length
);
1564 target_flash_done (void)
1566 struct target_ops
*t
;
1568 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1569 if (t
->to_flash_done
!= NULL
)
1572 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1573 t
->to_flash_done (t
);
1581 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1582 struct cmd_list_element
*c
, const char *value
)
1584 fprintf_filtered (file
, _("\
1585 Mode for reading from readonly sections is %s.\n"),
1589 /* More generic transfers. */
1592 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1593 const char *annex
, gdb_byte
*readbuf
,
1594 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1596 if (object
== TARGET_OBJECT_MEMORY
1597 && ops
->deprecated_xfer_memory
!= NULL
)
1598 /* If available, fall back to the target's
1599 "deprecated_xfer_memory" method. */
1603 if (writebuf
!= NULL
)
1605 void *buffer
= xmalloc (len
);
1606 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1607 memcpy (buffer
, writebuf
, len
);
1608 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1609 1/*write*/, NULL
, ops
);
1610 do_cleanups (cleanup
);
1612 if (readbuf
!= NULL
)
1613 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1614 0/*read*/, NULL
, ops
);
1617 else if (xfered
== 0 && errno
== 0)
1618 /* "deprecated_xfer_memory" uses 0, cross checked against
1619 ERRNO as one indication of an error. */
1624 else if (ops
->beneath
!= NULL
)
1625 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1626 readbuf
, writebuf
, offset
, len
);
1631 /* The xfer_partial handler for the topmost target. Unlike the default,
1632 it does not need to handle memory specially; it just passes all
1633 requests down the stack. */
1636 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1637 const char *annex
, gdb_byte
*readbuf
,
1638 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1640 if (ops
->beneath
!= NULL
)
1641 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1642 readbuf
, writebuf
, offset
, len
);
1647 /* Target vector read/write partial wrapper functions. */
1650 target_read_partial (struct target_ops
*ops
,
1651 enum target_object object
,
1652 const char *annex
, gdb_byte
*buf
,
1653 ULONGEST offset
, LONGEST len
)
1655 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
1659 target_write_partial (struct target_ops
*ops
,
1660 enum target_object object
,
1661 const char *annex
, const gdb_byte
*buf
,
1662 ULONGEST offset
, LONGEST len
)
1664 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
1667 /* Wrappers to perform the full transfer. */
1669 /* For docs on target_read see target.h. */
1672 target_read (struct target_ops
*ops
,
1673 enum target_object object
,
1674 const char *annex
, gdb_byte
*buf
,
1675 ULONGEST offset
, LONGEST len
)
1678 while (xfered
< len
)
1680 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
1681 (gdb_byte
*) buf
+ xfered
,
1682 offset
+ xfered
, len
- xfered
);
1683 /* Call an observer, notifying them of the xfer progress? */
1695 target_read_until_error (struct target_ops
*ops
,
1696 enum target_object object
,
1697 const char *annex
, gdb_byte
*buf
,
1698 ULONGEST offset
, LONGEST len
)
1701 while (xfered
< len
)
1703 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
1704 (gdb_byte
*) buf
+ xfered
,
1705 offset
+ xfered
, len
- xfered
);
1706 /* Call an observer, notifying them of the xfer progress? */
1711 /* We've got an error. Try to read in smaller blocks. */
1712 ULONGEST start
= offset
+ xfered
;
1713 ULONGEST remaining
= len
- xfered
;
1716 /* If an attempt was made to read a random memory address,
1717 it's likely that the very first byte is not accessible.
1718 Try reading the first byte, to avoid doing log N tries
1720 xfer
= target_read_partial (ops
, object
, annex
,
1721 (gdb_byte
*) buf
+ xfered
, start
, 1);
1730 xfer
= target_read_partial (ops
, object
, annex
,
1731 (gdb_byte
*) buf
+ xfered
,
1741 /* We have successfully read the first half. So, the
1742 error must be in the second half. Adjust start and
1743 remaining to point at the second half. */
1759 /* An alternative to target_write with progress callbacks. */
1762 target_write_with_progress (struct target_ops
*ops
,
1763 enum target_object object
,
1764 const char *annex
, const gdb_byte
*buf
,
1765 ULONGEST offset
, LONGEST len
,
1766 void (*progress
) (ULONGEST
, void *), void *baton
)
1770 /* Give the progress callback a chance to set up. */
1772 (*progress
) (0, baton
);
1774 while (xfered
< len
)
1776 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
1777 (gdb_byte
*) buf
+ xfered
,
1778 offset
+ xfered
, len
- xfered
);
1786 (*progress
) (xfer
, baton
);
1794 /* For docs on target_write see target.h. */
1797 target_write (struct target_ops
*ops
,
1798 enum target_object object
,
1799 const char *annex
, const gdb_byte
*buf
,
1800 ULONGEST offset
, LONGEST len
)
1802 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
1806 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
1807 the size of the transferred data. PADDING additional bytes are
1808 available in *BUF_P. This is a helper function for
1809 target_read_alloc; see the declaration of that function for more
1813 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
1814 const char *annex
, gdb_byte
**buf_p
, int padding
)
1816 size_t buf_alloc
, buf_pos
;
1820 /* This function does not have a length parameter; it reads the
1821 entire OBJECT). Also, it doesn't support objects fetched partly
1822 from one target and partly from another (in a different stratum,
1823 e.g. a core file and an executable). Both reasons make it
1824 unsuitable for reading memory. */
1825 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
1827 /* Start by reading up to 4K at a time. The target will throttle
1828 this number down if necessary. */
1830 buf
= xmalloc (buf_alloc
);
1834 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
1835 buf_pos
, buf_alloc
- buf_pos
- padding
);
1838 /* An error occurred. */
1844 /* Read all there was. */
1854 /* If the buffer is filling up, expand it. */
1855 if (buf_alloc
< buf_pos
* 2)
1858 buf
= xrealloc (buf
, buf_alloc
);
1865 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
1866 the size of the transferred data. See the declaration in "target.h"
1867 function for more information about the return value. */
1870 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
1871 const char *annex
, gdb_byte
**buf_p
)
1873 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
1876 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
1877 returned as a string, allocated using xmalloc. If an error occurs
1878 or the transfer is unsupported, NULL is returned. Empty objects
1879 are returned as allocated but empty strings. A warning is issued
1880 if the result contains any embedded NUL bytes. */
1883 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
1887 LONGEST transferred
;
1889 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
1891 if (transferred
< 0)
1894 if (transferred
== 0)
1895 return xstrdup ("");
1897 buffer
[transferred
] = 0;
1898 if (strlen (buffer
) < transferred
)
1899 warning (_("target object %d, annex %s, "
1900 "contained unexpected null characters"),
1901 (int) object
, annex
? annex
: "(none)");
1903 return (char *) buffer
;
1906 /* Memory transfer methods. */
1909 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
1912 /* This method is used to read from an alternate, non-current
1913 target. This read must bypass the overlay support (as symbols
1914 don't match this target), and GDB's internal cache (wrong cache
1915 for this target). */
1916 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
1918 memory_error (EIO
, addr
);
1922 get_target_memory_unsigned (struct target_ops
*ops
,
1923 CORE_ADDR addr
, int len
, enum bfd_endian byte_order
)
1925 gdb_byte buf
[sizeof (ULONGEST
)];
1927 gdb_assert (len
<= sizeof (buf
));
1928 get_target_memory (ops
, addr
, buf
, len
);
1929 return extract_unsigned_integer (buf
, len
, byte_order
);
1933 target_info (char *args
, int from_tty
)
1935 struct target_ops
*t
;
1936 int has_all_mem
= 0;
1938 if (symfile_objfile
!= NULL
)
1939 printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile
->name
);
1941 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
1943 if (!(*t
->to_has_memory
) (t
))
1946 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
1949 printf_unfiltered (_("\tWhile running this, GDB does not access memory from...\n"));
1950 printf_unfiltered ("%s:\n", t
->to_longname
);
1951 (t
->to_files_info
) (t
);
1952 has_all_mem
= (*t
->to_has_all_memory
) (t
);
1956 /* This function is called before any new inferior is created, e.g.
1957 by running a program, attaching, or connecting to a target.
1958 It cleans up any state from previous invocations which might
1959 change between runs. This is a subset of what target_preopen
1960 resets (things which might change between targets). */
1963 target_pre_inferior (int from_tty
)
1965 /* Clear out solib state. Otherwise the solib state of the previous
1966 inferior might have survived and is entirely wrong for the new
1967 target. This has been observed on GNU/Linux using glibc 2.3. How
1979 Cannot access memory at address 0xdeadbeef
1982 /* In some OSs, the shared library list is the same/global/shared
1983 across inferiors. If code is shared between processes, so are
1984 memory regions and features. */
1985 if (!gdbarch_has_global_solist (target_gdbarch
))
1987 no_shared_libraries (NULL
, from_tty
);
1989 invalidate_target_mem_regions ();
1991 target_clear_description ();
1995 /* Callback for iterate_over_inferiors. Gets rid of the given
1999 dispose_inferior (struct inferior
*inf
, void *args
)
2001 struct thread_info
*thread
;
2003 thread
= any_thread_of_process (inf
->pid
);
2006 switch_to_thread (thread
->ptid
);
2008 /* Core inferiors actually should be detached, not killed. */
2009 if (target_has_execution
)
2012 target_detach (NULL
, 0);
2018 /* This is to be called by the open routine before it does
2022 target_preopen (int from_tty
)
2026 if (have_inferiors ())
2029 || !have_live_inferiors ()
2030 || query (_("A program is being debugged already. Kill it? ")))
2031 iterate_over_inferiors (dispose_inferior
, NULL
);
2033 error (_("Program not killed."));
2036 /* Calling target_kill may remove the target from the stack. But if
2037 it doesn't (which seems like a win for UDI), remove it now. */
2038 /* Leave the exec target, though. The user may be switching from a
2039 live process to a core of the same program. */
2040 pop_all_targets_above (file_stratum
, 0);
2042 target_pre_inferior (from_tty
);
2045 /* Detach a target after doing deferred register stores. */
2048 target_detach (char *args
, int from_tty
)
2050 struct target_ops
* t
;
2052 if (gdbarch_has_global_breakpoints (target_gdbarch
))
2053 /* Don't remove global breakpoints here. They're removed on
2054 disconnection from the target. */
2057 /* If we're in breakpoints-always-inserted mode, have to remove
2058 them before detaching. */
2059 remove_breakpoints_pid (PIDGET (inferior_ptid
));
2061 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2063 if (t
->to_detach
!= NULL
)
2065 t
->to_detach (t
, args
, from_tty
);
2067 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2073 internal_error (__FILE__
, __LINE__
, "could not find a target to detach");
2077 target_disconnect (char *args
, int from_tty
)
2079 struct target_ops
*t
;
2081 /* If we're in breakpoints-always-inserted mode or if breakpoints
2082 are global across processes, we have to remove them before
2084 remove_breakpoints ();
2086 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2087 if (t
->to_disconnect
!= NULL
)
2090 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2092 t
->to_disconnect (t
, args
, from_tty
);
2100 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2102 struct target_ops
*t
;
2104 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2106 if (t
->to_wait
!= NULL
)
2108 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2112 char *status_string
;
2114 status_string
= target_waitstatus_to_string (status
);
2115 fprintf_unfiltered (gdb_stdlog
,
2116 "target_wait (%d, status) = %d, %s\n",
2117 PIDGET (ptid
), PIDGET (retval
),
2119 xfree (status_string
);
2130 target_pid_to_str (ptid_t ptid
)
2132 struct target_ops
*t
;
2134 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2136 if (t
->to_pid_to_str
!= NULL
)
2137 return (*t
->to_pid_to_str
) (t
, ptid
);
2140 return normal_pid_to_str (ptid
);
2144 target_resume (ptid_t ptid
, int step
, enum target_signal signal
)
2146 struct target_ops
*t
;
2148 target_dcache_invalidate ();
2150 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2152 if (t
->to_resume
!= NULL
)
2154 t
->to_resume (t
, ptid
, step
, signal
);
2156 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2158 step
? "step" : "continue",
2159 target_signal_to_name (signal
));
2161 set_executing (ptid
, 1);
2162 set_running (ptid
, 1);
2163 clear_inline_frame_state (ptid
);
2170 /* Look through the list of possible targets for a target that can
2174 target_follow_fork (int follow_child
)
2176 struct target_ops
*t
;
2178 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2180 if (t
->to_follow_fork
!= NULL
)
2182 int retval
= t
->to_follow_fork (t
, follow_child
);
2184 fprintf_unfiltered (gdb_stdlog
, "target_follow_fork (%d) = %d\n",
2185 follow_child
, retval
);
2190 /* Some target returned a fork event, but did not know how to follow it. */
2191 internal_error (__FILE__
, __LINE__
,
2192 "could not find a target to follow fork");
2196 target_mourn_inferior (void)
2198 struct target_ops
*t
;
2199 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2201 if (t
->to_mourn_inferior
!= NULL
)
2203 t
->to_mourn_inferior (t
);
2205 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2207 /* We no longer need to keep handles on any of the object files.
2208 Make sure to release them to avoid unnecessarily locking any
2209 of them while we're not actually debugging. */
2210 bfd_cache_close_all ();
2216 internal_error (__FILE__
, __LINE__
,
2217 "could not find a target to follow mourn inferiour");
2220 /* Look for a target which can describe architectural features, starting
2221 from TARGET. If we find one, return its description. */
2223 const struct target_desc
*
2224 target_read_description (struct target_ops
*target
)
2226 struct target_ops
*t
;
2228 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2229 if (t
->to_read_description
!= NULL
)
2231 const struct target_desc
*tdesc
;
2233 tdesc
= t
->to_read_description (t
);
2241 /* The default implementation of to_search_memory.
2242 This implements a basic search of memory, reading target memory and
2243 performing the search here (as opposed to performing the search in on the
2244 target side with, for example, gdbserver). */
2247 simple_search_memory (struct target_ops
*ops
,
2248 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2249 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2250 CORE_ADDR
*found_addrp
)
2252 /* NOTE: also defined in find.c testcase. */
2253 #define SEARCH_CHUNK_SIZE 16000
2254 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2255 /* Buffer to hold memory contents for searching. */
2256 gdb_byte
*search_buf
;
2257 unsigned search_buf_size
;
2258 struct cleanup
*old_cleanups
;
2260 search_buf_size
= chunk_size
+ pattern_len
- 1;
2262 /* No point in trying to allocate a buffer larger than the search space. */
2263 if (search_space_len
< search_buf_size
)
2264 search_buf_size
= search_space_len
;
2266 search_buf
= malloc (search_buf_size
);
2267 if (search_buf
== NULL
)
2268 error (_("Unable to allocate memory to perform the search."));
2269 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2271 /* Prime the search buffer. */
2273 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2274 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2276 warning (_("Unable to access target memory at %s, halting search."),
2277 hex_string (start_addr
));
2278 do_cleanups (old_cleanups
);
2282 /* Perform the search.
2284 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2285 When we've scanned N bytes we copy the trailing bytes to the start and
2286 read in another N bytes. */
2288 while (search_space_len
>= pattern_len
)
2290 gdb_byte
*found_ptr
;
2291 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2293 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2294 pattern
, pattern_len
);
2296 if (found_ptr
!= NULL
)
2298 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2299 *found_addrp
= found_addr
;
2300 do_cleanups (old_cleanups
);
2304 /* Not found in this chunk, skip to next chunk. */
2306 /* Don't let search_space_len wrap here, it's unsigned. */
2307 if (search_space_len
>= chunk_size
)
2308 search_space_len
-= chunk_size
;
2310 search_space_len
= 0;
2312 if (search_space_len
>= pattern_len
)
2314 unsigned keep_len
= search_buf_size
- chunk_size
;
2315 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2318 /* Copy the trailing part of the previous iteration to the front
2319 of the buffer for the next iteration. */
2320 gdb_assert (keep_len
== pattern_len
- 1);
2321 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2323 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2325 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2326 search_buf
+ keep_len
, read_addr
,
2327 nr_to_read
) != nr_to_read
)
2329 warning (_("Unable to access target memory at %s, halting search."),
2330 hex_string (read_addr
));
2331 do_cleanups (old_cleanups
);
2335 start_addr
+= chunk_size
;
2341 do_cleanups (old_cleanups
);
2345 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2346 sequence of bytes in PATTERN with length PATTERN_LEN.
2348 The result is 1 if found, 0 if not found, and -1 if there was an error
2349 requiring halting of the search (e.g. memory read error).
2350 If the pattern is found the address is recorded in FOUND_ADDRP. */
2353 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2354 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2355 CORE_ADDR
*found_addrp
)
2357 struct target_ops
*t
;
2360 /* We don't use INHERIT to set current_target.to_search_memory,
2361 so we have to scan the target stack and handle targetdebug
2365 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2366 hex_string (start_addr
));
2368 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2369 if (t
->to_search_memory
!= NULL
)
2374 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2375 pattern
, pattern_len
, found_addrp
);
2379 /* If a special version of to_search_memory isn't available, use the
2381 found
= simple_search_memory (current_target
.beneath
,
2382 start_addr
, search_space_len
,
2383 pattern
, pattern_len
, found_addrp
);
2387 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2392 /* Look through the currently pushed targets. If none of them will
2393 be able to restart the currently running process, issue an error
2397 target_require_runnable (void)
2399 struct target_ops
*t
;
2401 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2403 /* If this target knows how to create a new program, then
2404 assume we will still be able to after killing the current
2405 one. Either killing and mourning will not pop T, or else
2406 find_default_run_target will find it again. */
2407 if (t
->to_create_inferior
!= NULL
)
2410 /* Do not worry about thread_stratum targets that can not
2411 create inferiors. Assume they will be pushed again if
2412 necessary, and continue to the process_stratum. */
2413 if (t
->to_stratum
== thread_stratum
2414 || t
->to_stratum
== arch_stratum
)
2418 The \"%s\" target does not support \"run\". Try \"help target\" or \"continue\"."),
2422 /* This function is only called if the target is running. In that
2423 case there should have been a process_stratum target and it
2424 should either know how to create inferiors, or not... */
2425 internal_error (__FILE__
, __LINE__
, "No targets found");
2428 /* Look through the list of possible targets for a target that can
2429 execute a run or attach command without any other data. This is
2430 used to locate the default process stratum.
2432 If DO_MESG is not NULL, the result is always valid (error() is
2433 called for errors); else, return NULL on error. */
2435 static struct target_ops
*
2436 find_default_run_target (char *do_mesg
)
2438 struct target_ops
**t
;
2439 struct target_ops
*runable
= NULL
;
2444 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2447 if ((*t
)->to_can_run
&& target_can_run (*t
))
2457 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
2466 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
2468 struct target_ops
*t
;
2470 t
= find_default_run_target ("attach");
2471 (t
->to_attach
) (t
, args
, from_tty
);
2476 find_default_create_inferior (struct target_ops
*ops
,
2477 char *exec_file
, char *allargs
, char **env
,
2480 struct target_ops
*t
;
2482 t
= find_default_run_target ("run");
2483 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
2488 find_default_can_async_p (void)
2490 struct target_ops
*t
;
2492 /* This may be called before the target is pushed on the stack;
2493 look for the default process stratum. If there's none, gdb isn't
2494 configured with a native debugger, and target remote isn't
2496 t
= find_default_run_target (NULL
);
2497 if (t
&& t
->to_can_async_p
)
2498 return (t
->to_can_async_p
) ();
2503 find_default_is_async_p (void)
2505 struct target_ops
*t
;
2507 /* This may be called before the target is pushed on the stack;
2508 look for the default process stratum. If there's none, gdb isn't
2509 configured with a native debugger, and target remote isn't
2511 t
= find_default_run_target (NULL
);
2512 if (t
&& t
->to_is_async_p
)
2513 return (t
->to_is_async_p
) ();
2518 find_default_supports_non_stop (void)
2520 struct target_ops
*t
;
2522 t
= find_default_run_target (NULL
);
2523 if (t
&& t
->to_supports_non_stop
)
2524 return (t
->to_supports_non_stop
) ();
2529 target_supports_non_stop (void)
2531 struct target_ops
*t
;
2532 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
2533 if (t
->to_supports_non_stop
)
2534 return t
->to_supports_non_stop ();
2541 target_get_osdata (const char *type
)
2544 struct target_ops
*t
;
2546 /* If we're already connected to something that can get us OS
2547 related data, use it. Otherwise, try using the native
2549 if (current_target
.to_stratum
>= process_stratum
)
2550 t
= current_target
.beneath
;
2552 t
= find_default_run_target ("get OS data");
2557 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
2560 /* Determine the current address space of thread PTID. */
2562 struct address_space
*
2563 target_thread_address_space (ptid_t ptid
)
2565 struct address_space
*aspace
;
2566 struct inferior
*inf
;
2567 struct target_ops
*t
;
2569 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2571 if (t
->to_thread_address_space
!= NULL
)
2573 aspace
= t
->to_thread_address_space (t
, ptid
);
2574 gdb_assert (aspace
);
2577 fprintf_unfiltered (gdb_stdlog
,
2578 "target_thread_address_space (%s) = %d\n",
2579 target_pid_to_str (ptid
),
2580 address_space_num (aspace
));
2585 /* Fall-back to the "main" address space of the inferior. */
2586 inf
= find_inferior_pid (ptid_get_pid (ptid
));
2588 if (inf
== NULL
|| inf
->aspace
== NULL
)
2589 internal_error (__FILE__
, __LINE__
, "\
2590 Can't determine the current address space of thread %s\n",
2591 target_pid_to_str (ptid
));
2597 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
2599 return (len
<= gdbarch_ptr_bit (target_gdbarch
) / TARGET_CHAR_BIT
);
2603 default_watchpoint_addr_within_range (struct target_ops
*target
,
2605 CORE_ADDR start
, int length
)
2607 return addr
>= start
&& addr
< start
+ length
;
2610 static struct gdbarch
*
2611 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
2613 return target_gdbarch
;
2629 return_minus_one (void)
2634 /* Find a single runnable target in the stack and return it. If for
2635 some reason there is more than one, return NULL. */
2638 find_run_target (void)
2640 struct target_ops
**t
;
2641 struct target_ops
*runable
= NULL
;
2646 for (t
= target_structs
; t
< target_structs
+ target_struct_size
; ++t
)
2648 if ((*t
)->to_can_run
&& target_can_run (*t
))
2655 return (count
== 1 ? runable
: NULL
);
2658 /* Find a single core_stratum target in the list of targets and return it.
2659 If for some reason there is more than one, return NULL. */
2662 find_core_target (void)
2664 struct target_ops
**t
;
2665 struct target_ops
*runable
= NULL
;
2670 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2673 if ((*t
)->to_stratum
== core_stratum
)
2680 return (count
== 1 ? runable
: NULL
);
2684 * Find the next target down the stack from the specified target.
2688 find_target_beneath (struct target_ops
*t
)
2694 /* The inferior process has died. Long live the inferior! */
2697 generic_mourn_inferior (void)
2701 ptid
= inferior_ptid
;
2702 inferior_ptid
= null_ptid
;
2704 if (!ptid_equal (ptid
, null_ptid
))
2706 int pid
= ptid_get_pid (ptid
);
2707 exit_inferior (pid
);
2710 breakpoint_init_inferior (inf_exited
);
2711 registers_changed ();
2713 reopen_exec_file ();
2714 reinit_frame_cache ();
2716 if (deprecated_detach_hook
)
2717 deprecated_detach_hook ();
2720 /* Helper function for child_wait and the derivatives of child_wait.
2721 HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
2722 translation of that in OURSTATUS. */
2724 store_waitstatus (struct target_waitstatus
*ourstatus
, int hoststatus
)
2726 if (WIFEXITED (hoststatus
))
2728 ourstatus
->kind
= TARGET_WAITKIND_EXITED
;
2729 ourstatus
->value
.integer
= WEXITSTATUS (hoststatus
);
2731 else if (!WIFSTOPPED (hoststatus
))
2733 ourstatus
->kind
= TARGET_WAITKIND_SIGNALLED
;
2734 ourstatus
->value
.sig
= target_signal_from_host (WTERMSIG (hoststatus
));
2738 ourstatus
->kind
= TARGET_WAITKIND_STOPPED
;
2739 ourstatus
->value
.sig
= target_signal_from_host (WSTOPSIG (hoststatus
));
2743 /* Convert a normal process ID to a string. Returns the string in a
2747 normal_pid_to_str (ptid_t ptid
)
2749 static char buf
[32];
2751 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
2756 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
2758 return normal_pid_to_str (ptid
);
2761 /* Error-catcher for target_find_memory_regions. */
2763 dummy_find_memory_regions (int (*ignore1
) (), void *ignore2
)
2765 error (_("Command not implemented for this target."));
2769 /* Error-catcher for target_make_corefile_notes. */
2771 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
2773 error (_("Command not implemented for this target."));
2777 /* Set up the handful of non-empty slots needed by the dummy target
2781 init_dummy_target (void)
2783 dummy_target
.to_shortname
= "None";
2784 dummy_target
.to_longname
= "None";
2785 dummy_target
.to_doc
= "";
2786 dummy_target
.to_attach
= find_default_attach
;
2787 dummy_target
.to_detach
=
2788 (void (*)(struct target_ops
*, char *, int))target_ignore
;
2789 dummy_target
.to_create_inferior
= find_default_create_inferior
;
2790 dummy_target
.to_can_async_p
= find_default_can_async_p
;
2791 dummy_target
.to_is_async_p
= find_default_is_async_p
;
2792 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
2793 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
2794 dummy_target
.to_stratum
= dummy_stratum
;
2795 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
2796 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
2797 dummy_target
.to_xfer_partial
= default_xfer_partial
;
2798 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
2799 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
2800 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
2801 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
2802 dummy_target
.to_has_execution
= (int (*) (struct target_ops
*)) return_zero
;
2803 dummy_target
.to_magic
= OPS_MAGIC
;
2807 debug_to_open (char *args
, int from_tty
)
2809 debug_target
.to_open (args
, from_tty
);
2811 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
2815 target_close (struct target_ops
*targ
, int quitting
)
2817 if (targ
->to_xclose
!= NULL
)
2818 targ
->to_xclose (targ
, quitting
);
2819 else if (targ
->to_close
!= NULL
)
2820 targ
->to_close (quitting
);
2823 fprintf_unfiltered (gdb_stdlog
, "target_close (%d)\n", quitting
);
2827 target_attach (char *args
, int from_tty
)
2829 struct target_ops
*t
;
2830 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2832 if (t
->to_attach
!= NULL
)
2834 t
->to_attach (t
, args
, from_tty
);
2836 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
2842 internal_error (__FILE__
, __LINE__
,
2843 "could not find a target to attach");
2847 target_thread_alive (ptid_t ptid
)
2849 struct target_ops
*t
;
2850 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2852 if (t
->to_thread_alive
!= NULL
)
2856 retval
= t
->to_thread_alive (t
, ptid
);
2858 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
2859 PIDGET (ptid
), retval
);
2869 target_find_new_threads (void)
2871 struct target_ops
*t
;
2872 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2874 if (t
->to_find_new_threads
!= NULL
)
2876 t
->to_find_new_threads (t
);
2878 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
2886 debug_to_post_attach (int pid
)
2888 debug_target
.to_post_attach (pid
);
2890 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
2893 /* Return a pretty printed form of target_waitstatus.
2894 Space for the result is malloc'd, caller must free. */
2897 target_waitstatus_to_string (const struct target_waitstatus
*ws
)
2899 const char *kind_str
= "status->kind = ";
2903 case TARGET_WAITKIND_EXITED
:
2904 return xstrprintf ("%sexited, status = %d",
2905 kind_str
, ws
->value
.integer
);
2906 case TARGET_WAITKIND_STOPPED
:
2907 return xstrprintf ("%sstopped, signal = %s",
2908 kind_str
, target_signal_to_name (ws
->value
.sig
));
2909 case TARGET_WAITKIND_SIGNALLED
:
2910 return xstrprintf ("%ssignalled, signal = %s",
2911 kind_str
, target_signal_to_name (ws
->value
.sig
));
2912 case TARGET_WAITKIND_LOADED
:
2913 return xstrprintf ("%sloaded", kind_str
);
2914 case TARGET_WAITKIND_FORKED
:
2915 return xstrprintf ("%sforked", kind_str
);
2916 case TARGET_WAITKIND_VFORKED
:
2917 return xstrprintf ("%svforked", kind_str
);
2918 case TARGET_WAITKIND_EXECD
:
2919 return xstrprintf ("%sexecd", kind_str
);
2920 case TARGET_WAITKIND_SYSCALL_ENTRY
:
2921 return xstrprintf ("%sentered syscall", kind_str
);
2922 case TARGET_WAITKIND_SYSCALL_RETURN
:
2923 return xstrprintf ("%sexited syscall", kind_str
);
2924 case TARGET_WAITKIND_SPURIOUS
:
2925 return xstrprintf ("%sspurious", kind_str
);
2926 case TARGET_WAITKIND_IGNORE
:
2927 return xstrprintf ("%signore", kind_str
);
2928 case TARGET_WAITKIND_NO_HISTORY
:
2929 return xstrprintf ("%sno-history", kind_str
);
2931 return xstrprintf ("%sunknown???", kind_str
);
2936 debug_print_register (const char * func
,
2937 struct regcache
*regcache
, int regno
)
2939 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
2940 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
2941 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
2942 && gdbarch_register_name (gdbarch
, regno
) != NULL
2943 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
2944 fprintf_unfiltered (gdb_stdlog
, "(%s)",
2945 gdbarch_register_name (gdbarch
, regno
));
2947 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
2948 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
2950 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
2951 int i
, size
= register_size (gdbarch
, regno
);
2952 unsigned char buf
[MAX_REGISTER_SIZE
];
2953 regcache_raw_collect (regcache
, regno
, buf
);
2954 fprintf_unfiltered (gdb_stdlog
, " = ");
2955 for (i
= 0; i
< size
; i
++)
2957 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
2959 if (size
<= sizeof (LONGEST
))
2961 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
2962 fprintf_unfiltered (gdb_stdlog
, " %s %s",
2963 core_addr_to_string_nz (val
), plongest (val
));
2966 fprintf_unfiltered (gdb_stdlog
, "\n");
2970 target_fetch_registers (struct regcache
*regcache
, int regno
)
2972 struct target_ops
*t
;
2973 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2975 if (t
->to_fetch_registers
!= NULL
)
2977 t
->to_fetch_registers (t
, regcache
, regno
);
2979 debug_print_register ("target_fetch_registers", regcache
, regno
);
2986 target_store_registers (struct regcache
*regcache
, int regno
)
2989 struct target_ops
*t
;
2990 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2992 if (t
->to_store_registers
!= NULL
)
2994 t
->to_store_registers (t
, regcache
, regno
);
2997 debug_print_register ("target_store_registers", regcache
, regno
);
3007 debug_to_prepare_to_store (struct regcache
*regcache
)
3009 debug_target
.to_prepare_to_store (regcache
);
3011 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
3015 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
3016 int write
, struct mem_attrib
*attrib
,
3017 struct target_ops
*target
)
3021 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
3024 fprintf_unfiltered (gdb_stdlog
,
3025 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
3026 paddress (target_gdbarch
, memaddr
), len
,
3027 write
? "write" : "read", retval
);
3033 fputs_unfiltered (", bytes =", gdb_stdlog
);
3034 for (i
= 0; i
< retval
; i
++)
3036 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
3038 if (targetdebug
< 2 && i
> 0)
3040 fprintf_unfiltered (gdb_stdlog
, " ...");
3043 fprintf_unfiltered (gdb_stdlog
, "\n");
3046 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
3050 fputc_unfiltered ('\n', gdb_stdlog
);
3056 debug_to_files_info (struct target_ops
*target
)
3058 debug_target
.to_files_info (target
);
3060 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
3064 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
3065 struct bp_target_info
*bp_tgt
)
3069 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
3071 fprintf_unfiltered (gdb_stdlog
,
3072 "target_insert_breakpoint (0x%lx, xxx) = %ld\n",
3073 (unsigned long) bp_tgt
->placed_address
,
3074 (unsigned long) retval
);
3079 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
3080 struct bp_target_info
*bp_tgt
)
3084 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
3086 fprintf_unfiltered (gdb_stdlog
,
3087 "target_remove_breakpoint (0x%lx, xxx) = %ld\n",
3088 (unsigned long) bp_tgt
->placed_address
,
3089 (unsigned long) retval
);
3094 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
3098 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
3100 fprintf_unfiltered (gdb_stdlog
,
3101 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
3102 (unsigned long) type
,
3103 (unsigned long) cnt
,
3104 (unsigned long) from_tty
,
3105 (unsigned long) retval
);
3110 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3114 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
3116 fprintf_unfiltered (gdb_stdlog
,
3117 "target_region_ok_for_hw_watchpoint (%ld, %ld) = 0x%lx\n",
3118 (unsigned long) addr
,
3119 (unsigned long) len
,
3120 (unsigned long) retval
);
3125 debug_to_stopped_by_watchpoint (void)
3129 retval
= debug_target
.to_stopped_by_watchpoint ();
3131 fprintf_unfiltered (gdb_stdlog
,
3132 "target_stopped_by_watchpoint () = %ld\n",
3133 (unsigned long) retval
);
3138 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
3142 retval
= debug_target
.to_stopped_data_address (target
, addr
);
3144 fprintf_unfiltered (gdb_stdlog
,
3145 "target_stopped_data_address ([0x%lx]) = %ld\n",
3146 (unsigned long)*addr
,
3147 (unsigned long)retval
);
3152 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
3154 CORE_ADDR start
, int length
)
3158 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
3161 fprintf_filtered (gdb_stdlog
,
3162 "target_watchpoint_addr_within_range (0x%lx, 0x%lx, %d) = %d\n",
3163 (unsigned long) addr
, (unsigned long) start
, length
,
3169 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
3170 struct bp_target_info
*bp_tgt
)
3174 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
3176 fprintf_unfiltered (gdb_stdlog
,
3177 "target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n",
3178 (unsigned long) bp_tgt
->placed_address
,
3179 (unsigned long) retval
);
3184 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
3185 struct bp_target_info
*bp_tgt
)
3189 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
3191 fprintf_unfiltered (gdb_stdlog
,
3192 "target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n",
3193 (unsigned long) bp_tgt
->placed_address
,
3194 (unsigned long) retval
);
3199 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
3203 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
);
3205 fprintf_unfiltered (gdb_stdlog
,
3206 "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n",
3207 (unsigned long) addr
, len
, type
, (unsigned long) retval
);
3212 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
3216 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
);
3218 fprintf_unfiltered (gdb_stdlog
,
3219 "target_remove_watchpoint (0x%lx, %d, %d) = %ld\n",
3220 (unsigned long) addr
, len
, type
, (unsigned long) retval
);
3225 debug_to_terminal_init (void)
3227 debug_target
.to_terminal_init ();
3229 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
3233 debug_to_terminal_inferior (void)
3235 debug_target
.to_terminal_inferior ();
3237 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
3241 debug_to_terminal_ours_for_output (void)
3243 debug_target
.to_terminal_ours_for_output ();
3245 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
3249 debug_to_terminal_ours (void)
3251 debug_target
.to_terminal_ours ();
3253 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
3257 debug_to_terminal_save_ours (void)
3259 debug_target
.to_terminal_save_ours ();
3261 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
3265 debug_to_terminal_info (char *arg
, int from_tty
)
3267 debug_target
.to_terminal_info (arg
, from_tty
);
3269 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
3274 debug_to_load (char *args
, int from_tty
)
3276 debug_target
.to_load (args
, from_tty
);
3278 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
3282 debug_to_lookup_symbol (char *name
, CORE_ADDR
*addrp
)
3286 retval
= debug_target
.to_lookup_symbol (name
, addrp
);
3288 fprintf_unfiltered (gdb_stdlog
, "target_lookup_symbol (%s, xxx)\n", name
);
3294 debug_to_post_startup_inferior (ptid_t ptid
)
3296 debug_target
.to_post_startup_inferior (ptid
);
3298 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
3303 debug_to_acknowledge_created_inferior (int pid
)
3305 debug_target
.to_acknowledge_created_inferior (pid
);
3307 fprintf_unfiltered (gdb_stdlog
, "target_acknowledge_created_inferior (%d)\n",
3312 debug_to_insert_fork_catchpoint (int pid
)
3314 debug_target
.to_insert_fork_catchpoint (pid
);
3316 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d)\n",
3321 debug_to_remove_fork_catchpoint (int pid
)
3325 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
3327 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
3334 debug_to_insert_vfork_catchpoint (int pid
)
3336 debug_target
.to_insert_vfork_catchpoint (pid
);
3338 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d)\n",
3343 debug_to_remove_vfork_catchpoint (int pid
)
3347 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
3349 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
3356 debug_to_insert_exec_catchpoint (int pid
)
3358 debug_target
.to_insert_exec_catchpoint (pid
);
3360 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d)\n",
3365 debug_to_remove_exec_catchpoint (int pid
)
3369 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
3371 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
3378 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
3382 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
3384 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
3385 pid
, wait_status
, *exit_status
, has_exited
);
3391 debug_to_can_run (void)
3395 retval
= debug_target
.to_can_run ();
3397 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
3403 debug_to_notice_signals (ptid_t ptid
)
3405 debug_target
.to_notice_signals (ptid
);
3407 fprintf_unfiltered (gdb_stdlog
, "target_notice_signals (%d)\n",
3411 static struct gdbarch
*
3412 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3414 struct gdbarch
*retval
;
3416 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
3418 fprintf_unfiltered (gdb_stdlog
, "target_thread_architecture (%s) = %s [%s]\n",
3419 target_pid_to_str (ptid
), host_address_to_string (retval
),
3420 gdbarch_bfd_arch_info (retval
)->printable_name
);
3425 debug_to_stop (ptid_t ptid
)
3427 debug_target
.to_stop (ptid
);
3429 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
3430 target_pid_to_str (ptid
));
3434 debug_to_rcmd (char *command
,
3435 struct ui_file
*outbuf
)
3437 debug_target
.to_rcmd (command
, outbuf
);
3438 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
3442 debug_to_pid_to_exec_file (int pid
)
3446 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
3448 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
3455 setup_target_debug (void)
3457 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
3459 current_target
.to_open
= debug_to_open
;
3460 current_target
.to_post_attach
= debug_to_post_attach
;
3461 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
3462 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
3463 current_target
.to_files_info
= debug_to_files_info
;
3464 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
3465 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
3466 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
3467 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
3468 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
3469 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
3470 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
3471 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
3472 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
3473 current_target
.to_watchpoint_addr_within_range
= debug_to_watchpoint_addr_within_range
;
3474 current_target
.to_region_ok_for_hw_watchpoint
= debug_to_region_ok_for_hw_watchpoint
;
3475 current_target
.to_terminal_init
= debug_to_terminal_init
;
3476 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
3477 current_target
.to_terminal_ours_for_output
= debug_to_terminal_ours_for_output
;
3478 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
3479 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
3480 current_target
.to_terminal_info
= debug_to_terminal_info
;
3481 current_target
.to_load
= debug_to_load
;
3482 current_target
.to_lookup_symbol
= debug_to_lookup_symbol
;
3483 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
3484 current_target
.to_acknowledge_created_inferior
= debug_to_acknowledge_created_inferior
;
3485 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
3486 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
3487 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
3488 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
3489 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
3490 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
3491 current_target
.to_has_exited
= debug_to_has_exited
;
3492 current_target
.to_can_run
= debug_to_can_run
;
3493 current_target
.to_notice_signals
= debug_to_notice_signals
;
3494 current_target
.to_stop
= debug_to_stop
;
3495 current_target
.to_rcmd
= debug_to_rcmd
;
3496 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
3497 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
3501 static char targ_desc
[] =
3502 "Names of targets and files being debugged.\n\
3503 Shows the entire stack of targets currently in use (including the exec-file,\n\
3504 core-file, and process, if any), as well as the symbol file name.";
3507 do_monitor_command (char *cmd
,
3510 if ((current_target
.to_rcmd
3511 == (void (*) (char *, struct ui_file
*)) tcomplain
)
3512 || (current_target
.to_rcmd
== debug_to_rcmd
3513 && (debug_target
.to_rcmd
3514 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
3515 error (_("\"monitor\" command not supported by this target."));
3516 target_rcmd (cmd
, gdb_stdtarg
);
3519 /* Print the name of each layers of our target stack. */
3522 maintenance_print_target_stack (char *cmd
, int from_tty
)
3524 struct target_ops
*t
;
3526 printf_filtered (_("The current target stack is:\n"));
3528 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3530 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
3534 /* Controls if async mode is permitted. */
3535 int target_async_permitted
= 0;
3537 /* The set command writes to this variable. If the inferior is
3538 executing, linux_nat_async_permitted is *not* updated. */
3539 static int target_async_permitted_1
= 0;
3542 set_maintenance_target_async_permitted (char *args
, int from_tty
,
3543 struct cmd_list_element
*c
)
3545 if (have_live_inferiors ())
3547 target_async_permitted_1
= target_async_permitted
;
3548 error (_("Cannot change this setting while the inferior is running."));
3551 target_async_permitted
= target_async_permitted_1
;
3555 show_maintenance_target_async_permitted (struct ui_file
*file
, int from_tty
,
3556 struct cmd_list_element
*c
,
3559 fprintf_filtered (file
, _("\
3560 Controlling the inferior in asynchronous mode is %s.\n"), value
);
3564 initialize_targets (void)
3566 init_dummy_target ();
3567 push_target (&dummy_target
);
3569 add_info ("target", target_info
, targ_desc
);
3570 add_info ("files", target_info
, targ_desc
);
3572 add_setshow_zinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
3573 Set target debugging."), _("\
3574 Show target debugging."), _("\
3575 When non-zero, target debugging is enabled. Higher numbers are more\n\
3576 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
3580 &setdebuglist
, &showdebuglist
);
3582 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
3583 &trust_readonly
, _("\
3584 Set mode for reading from readonly sections."), _("\
3585 Show mode for reading from readonly sections."), _("\
3586 When this mode is on, memory reads from readonly sections (such as .text)\n\
3587 will be read from the object file instead of from the target. This will\n\
3588 result in significant performance improvement for remote targets."),
3590 show_trust_readonly
,
3591 &setlist
, &showlist
);
3593 add_com ("monitor", class_obscure
, do_monitor_command
,
3594 _("Send a command to the remote monitor (remote targets only)."));
3596 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
3597 _("Print the name of each layer of the internal target stack."),
3598 &maintenanceprintlist
);
3600 add_setshow_boolean_cmd ("target-async", no_class
,
3601 &target_async_permitted_1
, _("\
3602 Set whether gdb controls the inferior in asynchronous mode."), _("\
3603 Show whether gdb controls the inferior in asynchronous mode."), _("\
3604 Tells gdb whether to control the inferior in asynchronous mode."),
3605 set_maintenance_target_async_permitted
,
3606 show_maintenance_target_async_permitted
,
3610 add_setshow_boolean_cmd ("stack-cache", class_support
,
3611 &stack_cache_enabled_p_1
, _("\
3612 Set cache use for stack access."), _("\
3613 Show cache use for stack access."), _("\
3614 When on, use the data cache for all stack access, regardless of any\n\
3615 configured memory regions. This improves remote performance significantly.\n\
3616 By default, caching for stack access is on."),
3617 set_stack_cache_enabled_p
,
3618 show_stack_cache_enabled_p
,
3619 &setlist
, &showlist
);
3621 target_dcache
= dcache_init ();