1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2012 Free Software Foundation, Inc.
5 Contributed by Cygnus Support.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "gdb_string.h"
36 #include "gdb_assert.h"
38 #include "exceptions.h"
39 #include "target-descriptions.h"
40 #include "gdbthread.h"
43 #include "inline-frame.h"
44 #include "tracepoint.h"
45 #include "gdb/fileio.h"
47 static void target_info (char *, int);
49 static void default_terminal_info (char *, int);
51 static int default_watchpoint_addr_within_range (struct target_ops
*,
52 CORE_ADDR
, CORE_ADDR
, int);
54 static int default_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
56 static void tcomplain (void) ATTRIBUTE_NORETURN
;
58 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
60 static int return_zero (void);
62 static int return_one (void);
64 static int return_minus_one (void);
66 void target_ignore (void);
68 static void target_command (char *, int);
70 static struct target_ops
*find_default_run_target (char *);
72 static LONGEST
default_xfer_partial (struct target_ops
*ops
,
73 enum target_object object
,
74 const char *annex
, gdb_byte
*readbuf
,
75 const gdb_byte
*writebuf
,
76 ULONGEST offset
, LONGEST len
);
78 static LONGEST
current_xfer_partial (struct target_ops
*ops
,
79 enum target_object object
,
80 const char *annex
, gdb_byte
*readbuf
,
81 const gdb_byte
*writebuf
,
82 ULONGEST offset
, LONGEST len
);
84 static LONGEST
target_xfer_partial (struct target_ops
*ops
,
85 enum target_object object
,
87 void *readbuf
, const void *writebuf
,
88 ULONGEST offset
, LONGEST len
);
90 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
93 static void init_dummy_target (void);
95 static struct target_ops debug_target
;
97 static void debug_to_open (char *, int);
99 static void debug_to_prepare_to_store (struct regcache
*);
101 static void debug_to_files_info (struct target_ops
*);
103 static int debug_to_insert_breakpoint (struct gdbarch
*,
104 struct bp_target_info
*);
106 static int debug_to_remove_breakpoint (struct gdbarch
*,
107 struct bp_target_info
*);
109 static int debug_to_can_use_hw_breakpoint (int, int, int);
111 static int debug_to_insert_hw_breakpoint (struct gdbarch
*,
112 struct bp_target_info
*);
114 static int debug_to_remove_hw_breakpoint (struct gdbarch
*,
115 struct bp_target_info
*);
117 static int debug_to_insert_watchpoint (CORE_ADDR
, int, int,
118 struct expression
*);
120 static int debug_to_remove_watchpoint (CORE_ADDR
, int, int,
121 struct expression
*);
123 static int debug_to_stopped_by_watchpoint (void);
125 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
127 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
128 CORE_ADDR
, CORE_ADDR
, int);
130 static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
132 static int debug_to_can_accel_watchpoint_condition (CORE_ADDR
, int, int,
133 struct expression
*);
135 static void debug_to_terminal_init (void);
137 static void debug_to_terminal_inferior (void);
139 static void debug_to_terminal_ours_for_output (void);
141 static void debug_to_terminal_save_ours (void);
143 static void debug_to_terminal_ours (void);
145 static void debug_to_terminal_info (char *, int);
147 static void debug_to_load (char *, int);
149 static int debug_to_can_run (void);
151 static void debug_to_stop (ptid_t
);
153 /* Pointer to array of target architecture structures; the size of the
154 array; the current index into the array; the allocated size of the
156 struct target_ops
**target_structs
;
157 unsigned target_struct_size
;
158 unsigned target_struct_index
;
159 unsigned target_struct_allocsize
;
160 #define DEFAULT_ALLOCSIZE 10
162 /* The initial current target, so that there is always a semi-valid
165 static struct target_ops dummy_target
;
167 /* Top of target stack. */
169 static struct target_ops
*target_stack
;
171 /* The target structure we are currently using to talk to a process
172 or file or whatever "inferior" we have. */
174 struct target_ops current_target
;
176 /* Command list for target. */
178 static struct cmd_list_element
*targetlist
= NULL
;
180 /* Nonzero if we should trust readonly sections from the
181 executable when reading memory. */
183 static int trust_readonly
= 0;
185 /* Nonzero if we should show true memory content including
186 memory breakpoint inserted by gdb. */
188 static int show_memory_breakpoints
= 0;
190 /* These globals control whether GDB attempts to perform these
191 operations; they are useful for targets that need to prevent
192 inadvertant disruption, such as in non-stop mode. */
194 int may_write_registers
= 1;
196 int may_write_memory
= 1;
198 int may_insert_breakpoints
= 1;
200 int may_insert_tracepoints
= 1;
202 int may_insert_fast_tracepoints
= 1;
206 /* Non-zero if we want to see trace of target level stuff. */
208 static int targetdebug
= 0;
210 show_targetdebug (struct ui_file
*file
, int from_tty
,
211 struct cmd_list_element
*c
, const char *value
)
213 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
216 static void setup_target_debug (void);
218 /* The option sets this. */
219 static int stack_cache_enabled_p_1
= 1;
220 /* And set_stack_cache_enabled_p updates this.
221 The reason for the separation is so that we don't flush the cache for
222 on->on transitions. */
223 static int stack_cache_enabled_p
= 1;
225 /* This is called *after* the stack-cache has been set.
226 Flush the cache for off->on and on->off transitions.
227 There's no real need to flush the cache for on->off transitions,
228 except cleanliness. */
231 set_stack_cache_enabled_p (char *args
, int from_tty
,
232 struct cmd_list_element
*c
)
234 if (stack_cache_enabled_p
!= stack_cache_enabled_p_1
)
235 target_dcache_invalidate ();
237 stack_cache_enabled_p
= stack_cache_enabled_p_1
;
241 show_stack_cache_enabled_p (struct ui_file
*file
, int from_tty
,
242 struct cmd_list_element
*c
, const char *value
)
244 fprintf_filtered (file
, _("Cache use for stack accesses is %s.\n"), value
);
247 /* Cache of memory operations, to speed up remote access. */
248 static DCACHE
*target_dcache
;
250 /* Invalidate the target dcache. */
253 target_dcache_invalidate (void)
255 dcache_invalidate (target_dcache
);
258 /* The user just typed 'target' without the name of a target. */
261 target_command (char *arg
, int from_tty
)
263 fputs_filtered ("Argument required (target name). Try `help target'\n",
267 /* Default target_has_* methods for process_stratum targets. */
270 default_child_has_all_memory (struct target_ops
*ops
)
272 /* If no inferior selected, then we can't read memory here. */
273 if (ptid_equal (inferior_ptid
, null_ptid
))
280 default_child_has_memory (struct target_ops
*ops
)
282 /* If no inferior selected, then we can't read memory here. */
283 if (ptid_equal (inferior_ptid
, null_ptid
))
290 default_child_has_stack (struct target_ops
*ops
)
292 /* If no inferior selected, there's no stack. */
293 if (ptid_equal (inferior_ptid
, null_ptid
))
300 default_child_has_registers (struct target_ops
*ops
)
302 /* Can't read registers from no inferior. */
303 if (ptid_equal (inferior_ptid
, null_ptid
))
310 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
312 /* If there's no thread selected, then we can't make it run through
314 if (ptid_equal (the_ptid
, null_ptid
))
322 target_has_all_memory_1 (void)
324 struct target_ops
*t
;
326 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
327 if (t
->to_has_all_memory (t
))
334 target_has_memory_1 (void)
336 struct target_ops
*t
;
338 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
339 if (t
->to_has_memory (t
))
346 target_has_stack_1 (void)
348 struct target_ops
*t
;
350 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
351 if (t
->to_has_stack (t
))
358 target_has_registers_1 (void)
360 struct target_ops
*t
;
362 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
363 if (t
->to_has_registers (t
))
370 target_has_execution_1 (ptid_t the_ptid
)
372 struct target_ops
*t
;
374 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
375 if (t
->to_has_execution (t
, the_ptid
))
382 target_has_execution_current (void)
384 return target_has_execution_1 (inferior_ptid
);
387 /* Add a possible target architecture to the list. */
390 add_target (struct target_ops
*t
)
392 /* Provide default values for all "must have" methods. */
393 if (t
->to_xfer_partial
== NULL
)
394 t
->to_xfer_partial
= default_xfer_partial
;
396 if (t
->to_has_all_memory
== NULL
)
397 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
399 if (t
->to_has_memory
== NULL
)
400 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
402 if (t
->to_has_stack
== NULL
)
403 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
405 if (t
->to_has_registers
== NULL
)
406 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
408 if (t
->to_has_execution
== NULL
)
409 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
413 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
414 target_structs
= (struct target_ops
**) xmalloc
415 (target_struct_allocsize
* sizeof (*target_structs
));
417 if (target_struct_size
>= target_struct_allocsize
)
419 target_struct_allocsize
*= 2;
420 target_structs
= (struct target_ops
**)
421 xrealloc ((char *) target_structs
,
422 target_struct_allocsize
* sizeof (*target_structs
));
424 target_structs
[target_struct_size
++] = t
;
426 if (targetlist
== NULL
)
427 add_prefix_cmd ("target", class_run
, target_command
, _("\
428 Connect to a target machine or process.\n\
429 The first argument is the type or protocol of the target machine.\n\
430 Remaining arguments are interpreted by the target protocol. For more\n\
431 information on the arguments for a particular protocol, type\n\
432 `help target ' followed by the protocol name."),
433 &targetlist
, "target ", 0, &cmdlist
);
434 add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
447 struct target_ops
*t
;
449 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
450 if (t
->to_kill
!= NULL
)
453 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
463 target_load (char *arg
, int from_tty
)
465 target_dcache_invalidate ();
466 (*current_target
.to_load
) (arg
, from_tty
);
470 target_create_inferior (char *exec_file
, char *args
,
471 char **env
, int from_tty
)
473 struct target_ops
*t
;
475 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
477 if (t
->to_create_inferior
!= NULL
)
479 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
481 fprintf_unfiltered (gdb_stdlog
,
482 "target_create_inferior (%s, %s, xxx, %d)\n",
483 exec_file
, args
, from_tty
);
488 internal_error (__FILE__
, __LINE__
,
489 _("could not find a target to create inferior"));
493 target_terminal_inferior (void)
495 /* A background resume (``run&'') should leave GDB in control of the
496 terminal. Use target_can_async_p, not target_is_async_p, since at
497 this point the target is not async yet. However, if sync_execution
498 is not set, we know it will become async prior to resume. */
499 if (target_can_async_p () && !sync_execution
)
502 /* If GDB is resuming the inferior in the foreground, install
503 inferior's terminal modes. */
504 (*current_target
.to_terminal_inferior
) ();
508 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
509 struct target_ops
*t
)
511 errno
= EIO
; /* Can't read/write this location. */
512 return 0; /* No bytes handled. */
518 error (_("You can't do that when your target is `%s'"),
519 current_target
.to_shortname
);
525 error (_("You can't do that without a process to debug."));
529 default_terminal_info (char *args
, int from_tty
)
531 printf_unfiltered (_("No saved terminal information.\n"));
534 /* A default implementation for the to_get_ada_task_ptid target method.
536 This function builds the PTID by using both LWP and TID as part of
537 the PTID lwp and tid elements. The pid used is the pid of the
541 default_get_ada_task_ptid (long lwp
, long tid
)
543 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
546 static enum exec_direction_kind
547 default_execution_direction (void)
549 if (!target_can_execute_reverse
)
551 else if (!target_can_async_p ())
554 gdb_assert_not_reached ("\
555 to_execution_direction must be implemented for reverse async");
558 /* Go through the target stack from top to bottom, copying over zero
559 entries in current_target, then filling in still empty entries. In
560 effect, we are doing class inheritance through the pushed target
563 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
564 is currently implemented, is that it discards any knowledge of
565 which target an inherited method originally belonged to.
566 Consequently, new new target methods should instead explicitly and
567 locally search the target stack for the target that can handle the
571 update_current_target (void)
573 struct target_ops
*t
;
575 /* First, reset current's contents. */
576 memset (¤t_target
, 0, sizeof (current_target
));
578 #define INHERIT(FIELD, TARGET) \
579 if (!current_target.FIELD) \
580 current_target.FIELD = (TARGET)->FIELD
582 for (t
= target_stack
; t
; t
= t
->beneath
)
584 INHERIT (to_shortname
, t
);
585 INHERIT (to_longname
, t
);
587 /* Do not inherit to_open. */
588 /* Do not inherit to_close. */
589 /* Do not inherit to_attach. */
590 INHERIT (to_post_attach
, t
);
591 INHERIT (to_attach_no_wait
, t
);
592 /* Do not inherit to_detach. */
593 /* Do not inherit to_disconnect. */
594 /* Do not inherit to_resume. */
595 /* Do not inherit to_wait. */
596 /* Do not inherit to_fetch_registers. */
597 /* Do not inherit to_store_registers. */
598 INHERIT (to_prepare_to_store
, t
);
599 INHERIT (deprecated_xfer_memory
, t
);
600 INHERIT (to_files_info
, t
);
601 INHERIT (to_insert_breakpoint
, t
);
602 INHERIT (to_remove_breakpoint
, t
);
603 INHERIT (to_can_use_hw_breakpoint
, t
);
604 INHERIT (to_insert_hw_breakpoint
, t
);
605 INHERIT (to_remove_hw_breakpoint
, t
);
606 /* Do not inherit to_ranged_break_num_registers. */
607 INHERIT (to_insert_watchpoint
, t
);
608 INHERIT (to_remove_watchpoint
, t
);
609 /* Do not inherit to_insert_mask_watchpoint. */
610 /* Do not inherit to_remove_mask_watchpoint. */
611 INHERIT (to_stopped_data_address
, t
);
612 INHERIT (to_have_steppable_watchpoint
, t
);
613 INHERIT (to_have_continuable_watchpoint
, t
);
614 INHERIT (to_stopped_by_watchpoint
, t
);
615 INHERIT (to_watchpoint_addr_within_range
, t
);
616 INHERIT (to_region_ok_for_hw_watchpoint
, t
);
617 INHERIT (to_can_accel_watchpoint_condition
, t
);
618 /* Do not inherit to_masked_watch_num_registers. */
619 INHERIT (to_terminal_init
, t
);
620 INHERIT (to_terminal_inferior
, t
);
621 INHERIT (to_terminal_ours_for_output
, t
);
622 INHERIT (to_terminal_ours
, t
);
623 INHERIT (to_terminal_save_ours
, t
);
624 INHERIT (to_terminal_info
, t
);
625 /* Do not inherit to_kill. */
626 INHERIT (to_load
, t
);
627 /* Do no inherit to_create_inferior. */
628 INHERIT (to_post_startup_inferior
, t
);
629 INHERIT (to_insert_fork_catchpoint
, t
);
630 INHERIT (to_remove_fork_catchpoint
, t
);
631 INHERIT (to_insert_vfork_catchpoint
, t
);
632 INHERIT (to_remove_vfork_catchpoint
, t
);
633 /* Do not inherit to_follow_fork. */
634 INHERIT (to_insert_exec_catchpoint
, t
);
635 INHERIT (to_remove_exec_catchpoint
, t
);
636 INHERIT (to_set_syscall_catchpoint
, t
);
637 INHERIT (to_has_exited
, t
);
638 /* Do not inherit to_mourn_inferior. */
639 INHERIT (to_can_run
, t
);
640 /* Do not inherit to_pass_signals. */
641 /* Do not inherit to_thread_alive. */
642 /* Do not inherit to_find_new_threads. */
643 /* Do not inherit to_pid_to_str. */
644 INHERIT (to_extra_thread_info
, t
);
645 INHERIT (to_thread_name
, t
);
646 INHERIT (to_stop
, t
);
647 /* Do not inherit to_xfer_partial. */
648 INHERIT (to_rcmd
, t
);
649 INHERIT (to_pid_to_exec_file
, t
);
650 INHERIT (to_log_command
, t
);
651 INHERIT (to_stratum
, t
);
652 /* Do not inherit to_has_all_memory. */
653 /* Do not inherit to_has_memory. */
654 /* Do not inherit to_has_stack. */
655 /* Do not inherit to_has_registers. */
656 /* Do not inherit to_has_execution. */
657 INHERIT (to_has_thread_control
, t
);
658 INHERIT (to_can_async_p
, t
);
659 INHERIT (to_is_async_p
, t
);
660 INHERIT (to_async
, t
);
661 INHERIT (to_find_memory_regions
, t
);
662 INHERIT (to_make_corefile_notes
, t
);
663 INHERIT (to_get_bookmark
, t
);
664 INHERIT (to_goto_bookmark
, t
);
665 /* Do not inherit to_get_thread_local_address. */
666 INHERIT (to_can_execute_reverse
, t
);
667 INHERIT (to_execution_direction
, t
);
668 INHERIT (to_thread_architecture
, t
);
669 /* Do not inherit to_read_description. */
670 INHERIT (to_get_ada_task_ptid
, t
);
671 /* Do not inherit to_search_memory. */
672 INHERIT (to_supports_multi_process
, t
);
673 INHERIT (to_supports_enable_disable_tracepoint
, t
);
674 INHERIT (to_supports_string_tracing
, t
);
675 INHERIT (to_trace_init
, t
);
676 INHERIT (to_download_tracepoint
, t
);
677 INHERIT (to_can_download_tracepoint
, t
);
678 INHERIT (to_download_trace_state_variable
, t
);
679 INHERIT (to_enable_tracepoint
, t
);
680 INHERIT (to_disable_tracepoint
, t
);
681 INHERIT (to_trace_set_readonly_regions
, t
);
682 INHERIT (to_trace_start
, t
);
683 INHERIT (to_get_trace_status
, t
);
684 INHERIT (to_get_tracepoint_status
, t
);
685 INHERIT (to_trace_stop
, t
);
686 INHERIT (to_trace_find
, t
);
687 INHERIT (to_get_trace_state_variable_value
, t
);
688 INHERIT (to_save_trace_data
, t
);
689 INHERIT (to_upload_tracepoints
, t
);
690 INHERIT (to_upload_trace_state_variables
, t
);
691 INHERIT (to_get_raw_trace_data
, t
);
692 INHERIT (to_get_min_fast_tracepoint_insn_len
, t
);
693 INHERIT (to_set_disconnected_tracing
, t
);
694 INHERIT (to_set_circular_trace_buffer
, t
);
695 INHERIT (to_set_trace_notes
, t
);
696 INHERIT (to_get_tib_address
, t
);
697 INHERIT (to_set_permissions
, t
);
698 INHERIT (to_static_tracepoint_marker_at
, t
);
699 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
700 INHERIT (to_traceframe_info
, t
);
701 INHERIT (to_magic
, t
);
702 /* Do not inherit to_memory_map. */
703 /* Do not inherit to_flash_erase. */
704 /* Do not inherit to_flash_done. */
708 /* Clean up a target struct so it no longer has any zero pointers in
709 it. Some entries are defaulted to a method that print an error,
710 others are hard-wired to a standard recursive default. */
712 #define de_fault(field, value) \
713 if (!current_target.field) \
714 current_target.field = value
717 (void (*) (char *, int))
722 de_fault (to_post_attach
,
725 de_fault (to_prepare_to_store
,
726 (void (*) (struct regcache
*))
728 de_fault (deprecated_xfer_memory
,
729 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
730 struct mem_attrib
*, struct target_ops
*))
732 de_fault (to_files_info
,
733 (void (*) (struct target_ops
*))
735 de_fault (to_insert_breakpoint
,
736 memory_insert_breakpoint
);
737 de_fault (to_remove_breakpoint
,
738 memory_remove_breakpoint
);
739 de_fault (to_can_use_hw_breakpoint
,
740 (int (*) (int, int, int))
742 de_fault (to_insert_hw_breakpoint
,
743 (int (*) (struct gdbarch
*, struct bp_target_info
*))
745 de_fault (to_remove_hw_breakpoint
,
746 (int (*) (struct gdbarch
*, struct bp_target_info
*))
748 de_fault (to_insert_watchpoint
,
749 (int (*) (CORE_ADDR
, int, int, struct expression
*))
751 de_fault (to_remove_watchpoint
,
752 (int (*) (CORE_ADDR
, int, int, struct expression
*))
754 de_fault (to_stopped_by_watchpoint
,
757 de_fault (to_stopped_data_address
,
758 (int (*) (struct target_ops
*, CORE_ADDR
*))
760 de_fault (to_watchpoint_addr_within_range
,
761 default_watchpoint_addr_within_range
);
762 de_fault (to_region_ok_for_hw_watchpoint
,
763 default_region_ok_for_hw_watchpoint
);
764 de_fault (to_can_accel_watchpoint_condition
,
765 (int (*) (CORE_ADDR
, int, int, struct expression
*))
767 de_fault (to_terminal_init
,
770 de_fault (to_terminal_inferior
,
773 de_fault (to_terminal_ours_for_output
,
776 de_fault (to_terminal_ours
,
779 de_fault (to_terminal_save_ours
,
782 de_fault (to_terminal_info
,
783 default_terminal_info
);
785 (void (*) (char *, int))
787 de_fault (to_post_startup_inferior
,
790 de_fault (to_insert_fork_catchpoint
,
793 de_fault (to_remove_fork_catchpoint
,
796 de_fault (to_insert_vfork_catchpoint
,
799 de_fault (to_remove_vfork_catchpoint
,
802 de_fault (to_insert_exec_catchpoint
,
805 de_fault (to_remove_exec_catchpoint
,
808 de_fault (to_set_syscall_catchpoint
,
809 (int (*) (int, int, int, int, int *))
811 de_fault (to_has_exited
,
812 (int (*) (int, int, int *))
814 de_fault (to_can_run
,
816 de_fault (to_extra_thread_info
,
817 (char *(*) (struct thread_info
*))
819 de_fault (to_thread_name
,
820 (char *(*) (struct thread_info
*))
825 current_target
.to_xfer_partial
= current_xfer_partial
;
827 (void (*) (char *, struct ui_file
*))
829 de_fault (to_pid_to_exec_file
,
833 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
835 de_fault (to_thread_architecture
,
836 default_thread_architecture
);
837 current_target
.to_read_description
= NULL
;
838 de_fault (to_get_ada_task_ptid
,
839 (ptid_t (*) (long, long))
840 default_get_ada_task_ptid
);
841 de_fault (to_supports_multi_process
,
844 de_fault (to_supports_enable_disable_tracepoint
,
847 de_fault (to_supports_string_tracing
,
850 de_fault (to_trace_init
,
853 de_fault (to_download_tracepoint
,
854 (void (*) (struct bp_location
*))
856 de_fault (to_can_download_tracepoint
,
859 de_fault (to_download_trace_state_variable
,
860 (void (*) (struct trace_state_variable
*))
862 de_fault (to_enable_tracepoint
,
863 (void (*) (struct bp_location
*))
865 de_fault (to_disable_tracepoint
,
866 (void (*) (struct bp_location
*))
868 de_fault (to_trace_set_readonly_regions
,
871 de_fault (to_trace_start
,
874 de_fault (to_get_trace_status
,
875 (int (*) (struct trace_status
*))
877 de_fault (to_get_tracepoint_status
,
878 (void (*) (struct breakpoint
*, struct uploaded_tp
*))
880 de_fault (to_trace_stop
,
883 de_fault (to_trace_find
,
884 (int (*) (enum trace_find_type
, int, ULONGEST
, ULONGEST
, int *))
886 de_fault (to_get_trace_state_variable_value
,
887 (int (*) (int, LONGEST
*))
889 de_fault (to_save_trace_data
,
890 (int (*) (const char *))
892 de_fault (to_upload_tracepoints
,
893 (int (*) (struct uploaded_tp
**))
895 de_fault (to_upload_trace_state_variables
,
896 (int (*) (struct uploaded_tsv
**))
898 de_fault (to_get_raw_trace_data
,
899 (LONGEST (*) (gdb_byte
*, ULONGEST
, LONGEST
))
901 de_fault (to_get_min_fast_tracepoint_insn_len
,
904 de_fault (to_set_disconnected_tracing
,
907 de_fault (to_set_circular_trace_buffer
,
910 de_fault (to_set_trace_notes
,
911 (int (*) (char *, char *, char *))
913 de_fault (to_get_tib_address
,
914 (int (*) (ptid_t
, CORE_ADDR
*))
916 de_fault (to_set_permissions
,
919 de_fault (to_static_tracepoint_marker_at
,
920 (int (*) (CORE_ADDR
, struct static_tracepoint_marker
*))
922 de_fault (to_static_tracepoint_markers_by_strid
,
923 (VEC(static_tracepoint_marker_p
) * (*) (const char *))
925 de_fault (to_traceframe_info
,
926 (struct traceframe_info
* (*) (void))
928 de_fault (to_execution_direction
, default_execution_direction
);
932 /* Finally, position the target-stack beneath the squashed
933 "current_target". That way code looking for a non-inherited
934 target method can quickly and simply find it. */
935 current_target
.beneath
= target_stack
;
938 setup_target_debug ();
941 /* Push a new target type into the stack of the existing target accessors,
942 possibly superseding some of the existing accessors.
944 Rather than allow an empty stack, we always have the dummy target at
945 the bottom stratum, so we can call the function vectors without
949 push_target (struct target_ops
*t
)
951 struct target_ops
**cur
;
953 /* Check magic number. If wrong, it probably means someone changed
954 the struct definition, but not all the places that initialize one. */
955 if (t
->to_magic
!= OPS_MAGIC
)
957 fprintf_unfiltered (gdb_stderr
,
958 "Magic number of %s target struct wrong\n",
960 internal_error (__FILE__
, __LINE__
,
961 _("failed internal consistency check"));
964 /* Find the proper stratum to install this target in. */
965 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
967 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
971 /* If there's already targets at this stratum, remove them. */
972 /* FIXME: cagney/2003-10-15: I think this should be popping all
973 targets to CUR, and not just those at this stratum level. */
974 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
976 /* There's already something at this stratum level. Close it,
977 and un-hook it from the stack. */
978 struct target_ops
*tmp
= (*cur
);
980 (*cur
) = (*cur
)->beneath
;
982 target_close (tmp
, 0);
985 /* We have removed all targets in our stratum, now add the new one. */
989 update_current_target ();
992 /* Remove a target_ops vector from the stack, wherever it may be.
993 Return how many times it was removed (0 or 1). */
996 unpush_target (struct target_ops
*t
)
998 struct target_ops
**cur
;
999 struct target_ops
*tmp
;
1001 if (t
->to_stratum
== dummy_stratum
)
1002 internal_error (__FILE__
, __LINE__
,
1003 _("Attempt to unpush the dummy target"));
1005 /* Look for the specified target. Note that we assume that a target
1006 can only occur once in the target stack. */
1008 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1014 /* If we don't find target_ops, quit. Only open targets should be
1019 /* Unchain the target. */
1021 (*cur
) = (*cur
)->beneath
;
1022 tmp
->beneath
= NULL
;
1024 update_current_target ();
1026 /* Finally close the target. Note we do this after unchaining, so
1027 any target method calls from within the target_close
1028 implementation don't end up in T anymore. */
1029 target_close (t
, 0);
1037 target_close (target_stack
, 0); /* Let it clean up. */
1038 if (unpush_target (target_stack
) == 1)
1041 fprintf_unfiltered (gdb_stderr
,
1042 "pop_target couldn't find target %s\n",
1043 current_target
.to_shortname
);
1044 internal_error (__FILE__
, __LINE__
,
1045 _("failed internal consistency check"));
1049 pop_all_targets_above (enum strata above_stratum
, int quitting
)
1051 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
1053 target_close (target_stack
, quitting
);
1054 if (!unpush_target (target_stack
))
1056 fprintf_unfiltered (gdb_stderr
,
1057 "pop_all_targets couldn't find target %s\n",
1058 target_stack
->to_shortname
);
1059 internal_error (__FILE__
, __LINE__
,
1060 _("failed internal consistency check"));
1067 pop_all_targets (int quitting
)
1069 pop_all_targets_above (dummy_stratum
, quitting
);
1072 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
1075 target_is_pushed (struct target_ops
*t
)
1077 struct target_ops
**cur
;
1079 /* Check magic number. If wrong, it probably means someone changed
1080 the struct definition, but not all the places that initialize one. */
1081 if (t
->to_magic
!= OPS_MAGIC
)
1083 fprintf_unfiltered (gdb_stderr
,
1084 "Magic number of %s target struct wrong\n",
1086 internal_error (__FILE__
, __LINE__
,
1087 _("failed internal consistency check"));
1090 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1097 /* Using the objfile specified in OBJFILE, find the address for the
1098 current thread's thread-local storage with offset OFFSET. */
1100 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1102 volatile CORE_ADDR addr
= 0;
1103 struct target_ops
*target
;
1105 for (target
= current_target
.beneath
;
1107 target
= target
->beneath
)
1109 if (target
->to_get_thread_local_address
!= NULL
)
1114 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch
))
1116 ptid_t ptid
= inferior_ptid
;
1117 volatile struct gdb_exception ex
;
1119 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1123 /* Fetch the load module address for this objfile. */
1124 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch
,
1126 /* If it's 0, throw the appropriate exception. */
1128 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1129 _("TLS load module not found"));
1131 addr
= target
->to_get_thread_local_address (target
, ptid
,
1134 /* If an error occurred, print TLS related messages here. Otherwise,
1135 throw the error to some higher catcher. */
1138 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1142 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1143 error (_("Cannot find thread-local variables "
1144 "in this thread library."));
1146 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1147 if (objfile_is_library
)
1148 error (_("Cannot find shared library `%s' in dynamic"
1149 " linker's load module list"), objfile
->name
);
1151 error (_("Cannot find executable file `%s' in dynamic"
1152 " linker's load module list"), objfile
->name
);
1154 case TLS_NOT_ALLOCATED_YET_ERROR
:
1155 if (objfile_is_library
)
1156 error (_("The inferior has not yet allocated storage for"
1157 " thread-local variables in\n"
1158 "the shared library `%s'\n"
1160 objfile
->name
, target_pid_to_str (ptid
));
1162 error (_("The inferior has not yet allocated storage for"
1163 " thread-local variables in\n"
1164 "the executable `%s'\n"
1166 objfile
->name
, target_pid_to_str (ptid
));
1168 case TLS_GENERIC_ERROR
:
1169 if (objfile_is_library
)
1170 error (_("Cannot find thread-local storage for %s, "
1171 "shared library %s:\n%s"),
1172 target_pid_to_str (ptid
),
1173 objfile
->name
, ex
.message
);
1175 error (_("Cannot find thread-local storage for %s, "
1176 "executable file %s:\n%s"),
1177 target_pid_to_str (ptid
),
1178 objfile
->name
, ex
.message
);
1181 throw_exception (ex
);
1186 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1187 TLS is an ABI-specific thing. But we don't do that yet. */
1189 error (_("Cannot find thread-local variables on this target"));
1195 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1197 /* target_read_string -- read a null terminated string, up to LEN bytes,
1198 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1199 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1200 is responsible for freeing it. Return the number of bytes successfully
1204 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1206 int tlen
, origlen
, offset
, i
;
1210 int buffer_allocated
;
1212 unsigned int nbytes_read
= 0;
1214 gdb_assert (string
);
1216 /* Small for testing. */
1217 buffer_allocated
= 4;
1218 buffer
= xmalloc (buffer_allocated
);
1225 tlen
= MIN (len
, 4 - (memaddr
& 3));
1226 offset
= memaddr
& 3;
1228 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1231 /* The transfer request might have crossed the boundary to an
1232 unallocated region of memory. Retry the transfer, requesting
1236 errcode
= target_read_memory (memaddr
, buf
, 1);
1241 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1245 bytes
= bufptr
- buffer
;
1246 buffer_allocated
*= 2;
1247 buffer
= xrealloc (buffer
, buffer_allocated
);
1248 bufptr
= buffer
+ bytes
;
1251 for (i
= 0; i
< tlen
; i
++)
1253 *bufptr
++ = buf
[i
+ offset
];
1254 if (buf
[i
+ offset
] == '\000')
1256 nbytes_read
+= i
+ 1;
1263 nbytes_read
+= tlen
;
1272 struct target_section_table
*
1273 target_get_section_table (struct target_ops
*target
)
1275 struct target_ops
*t
;
1278 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1280 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1281 if (t
->to_get_section_table
!= NULL
)
1282 return (*t
->to_get_section_table
) (t
);
1287 /* Find a section containing ADDR. */
1289 struct target_section
*
1290 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1292 struct target_section_table
*table
= target_get_section_table (target
);
1293 struct target_section
*secp
;
1298 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1300 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1306 /* Read memory from the live target, even if currently inspecting a
1307 traceframe. The return is the same as that of target_read. */
1310 target_read_live_memory (enum target_object object
,
1311 ULONGEST memaddr
, gdb_byte
*myaddr
, LONGEST len
)
1314 struct cleanup
*cleanup
;
1316 /* Switch momentarily out of tfind mode so to access live memory.
1317 Note that this must not clear global state, such as the frame
1318 cache, which must still remain valid for the previous traceframe.
1319 We may be _building_ the frame cache at this point. */
1320 cleanup
= make_cleanup_restore_traceframe_number ();
1321 set_traceframe_number (-1);
1323 ret
= target_read (current_target
.beneath
, object
, NULL
,
1324 myaddr
, memaddr
, len
);
1326 do_cleanups (cleanup
);
1330 /* Using the set of read-only target sections of OPS, read live
1331 read-only memory. Note that the actual reads start from the
1332 top-most target again.
1334 For interface/parameters/return description see target.h,
1338 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1339 enum target_object object
,
1340 gdb_byte
*readbuf
, ULONGEST memaddr
,
1343 struct target_section
*secp
;
1344 struct target_section_table
*table
;
1346 secp
= target_section_by_addr (ops
, memaddr
);
1348 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1351 struct target_section
*p
;
1352 ULONGEST memend
= memaddr
+ len
;
1354 table
= target_get_section_table (ops
);
1356 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1358 if (memaddr
>= p
->addr
)
1360 if (memend
<= p
->endaddr
)
1362 /* Entire transfer is within this section. */
1363 return target_read_live_memory (object
, memaddr
,
1366 else if (memaddr
>= p
->endaddr
)
1368 /* This section ends before the transfer starts. */
1373 /* This section overlaps the transfer. Just do half. */
1374 len
= p
->endaddr
- memaddr
;
1375 return target_read_live_memory (object
, memaddr
,
1385 /* Perform a partial memory transfer.
1386 For docs see target.h, to_xfer_partial. */
1389 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1390 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1395 struct mem_region
*region
;
1396 struct inferior
*inf
;
1398 /* For accesses to unmapped overlay sections, read directly from
1399 files. Must do this first, as MEMADDR may need adjustment. */
1400 if (readbuf
!= NULL
&& overlay_debugging
)
1402 struct obj_section
*section
= find_pc_overlay (memaddr
);
1404 if (pc_in_unmapped_range (memaddr
, section
))
1406 struct target_section_table
*table
1407 = target_get_section_table (ops
);
1408 const char *section_name
= section
->the_bfd_section
->name
;
1410 memaddr
= overlay_mapped_address (memaddr
, section
);
1411 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1414 table
->sections_end
,
1419 /* Try the executable files, if "trust-readonly-sections" is set. */
1420 if (readbuf
!= NULL
&& trust_readonly
)
1422 struct target_section
*secp
;
1423 struct target_section_table
*table
;
1425 secp
= target_section_by_addr (ops
, memaddr
);
1427 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1430 table
= target_get_section_table (ops
);
1431 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1434 table
->sections_end
,
1439 /* If reading unavailable memory in the context of traceframes, and
1440 this address falls within a read-only section, fallback to
1441 reading from live memory. */
1442 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1444 VEC(mem_range_s
) *available
;
1446 /* If we fail to get the set of available memory, then the
1447 target does not support querying traceframe info, and so we
1448 attempt reading from the traceframe anyway (assuming the
1449 target implements the old QTro packet then). */
1450 if (traceframe_available_memory (&available
, memaddr
, len
))
1452 struct cleanup
*old_chain
;
1454 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1456 if (VEC_empty (mem_range_s
, available
)
1457 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1459 /* Don't read into the traceframe's available
1461 if (!VEC_empty (mem_range_s
, available
))
1463 LONGEST oldlen
= len
;
1465 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1466 gdb_assert (len
<= oldlen
);
1469 do_cleanups (old_chain
);
1471 /* This goes through the topmost target again. */
1472 res
= memory_xfer_live_readonly_partial (ops
, object
,
1473 readbuf
, memaddr
, len
);
1477 /* No use trying further, we know some memory starting
1478 at MEMADDR isn't available. */
1482 /* Don't try to read more than how much is available, in
1483 case the target implements the deprecated QTro packet to
1484 cater for older GDBs (the target's knowledge of read-only
1485 sections may be outdated by now). */
1486 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1488 do_cleanups (old_chain
);
1492 /* Try GDB's internal data cache. */
1493 region
= lookup_mem_region (memaddr
);
1494 /* region->hi == 0 means there's no upper bound. */
1495 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1498 reg_len
= region
->hi
- memaddr
;
1500 switch (region
->attrib
.mode
)
1503 if (writebuf
!= NULL
)
1508 if (readbuf
!= NULL
)
1513 /* We only support writing to flash during "load" for now. */
1514 if (writebuf
!= NULL
)
1515 error (_("Writing to flash memory forbidden in this context"));
1522 if (!ptid_equal (inferior_ptid
, null_ptid
))
1523 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1528 /* The dcache reads whole cache lines; that doesn't play well
1529 with reading from a trace buffer, because reading outside of
1530 the collected memory range fails. */
1531 && get_traceframe_number () == -1
1532 && (region
->attrib
.cache
1533 || (stack_cache_enabled_p
&& object
== TARGET_OBJECT_STACK_MEMORY
)))
1535 if (readbuf
!= NULL
)
1536 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
, readbuf
,
1539 /* FIXME drow/2006-08-09: If we're going to preserve const
1540 correctness dcache_xfer_memory should take readbuf and
1542 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
,
1551 /* If none of those methods found the memory we wanted, fall back
1552 to a target partial transfer. Normally a single call to
1553 to_xfer_partial is enough; if it doesn't recognize an object
1554 it will call the to_xfer_partial of the next target down.
1555 But for memory this won't do. Memory is the only target
1556 object which can be read from more than one valid target.
1557 A core file, for instance, could have some of memory but
1558 delegate other bits to the target below it. So, we must
1559 manually try all targets. */
1563 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1564 readbuf
, writebuf
, memaddr
, reg_len
);
1568 /* We want to continue past core files to executables, but not
1569 past a running target's memory. */
1570 if (ops
->to_has_all_memory (ops
))
1575 while (ops
!= NULL
);
1577 /* Make sure the cache gets updated no matter what - if we are writing
1578 to the stack. Even if this write is not tagged as such, we still need
1579 to update the cache. */
1584 && !region
->attrib
.cache
1585 && stack_cache_enabled_p
1586 && object
!= TARGET_OBJECT_STACK_MEMORY
)
1588 dcache_update (target_dcache
, memaddr
, (void *) writebuf
, res
);
1591 /* If we still haven't got anything, return the last error. We
1596 /* Perform a partial memory transfer. For docs see target.h,
1600 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1601 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1606 /* Zero length requests are ok and require no work. */
1610 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1611 breakpoint insns, thus hiding out from higher layers whether
1612 there are software breakpoints inserted in the code stream. */
1613 if (readbuf
!= NULL
)
1615 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
);
1617 if (res
> 0 && !show_memory_breakpoints
)
1618 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1623 struct cleanup
*old_chain
;
1625 buf
= xmalloc (len
);
1626 old_chain
= make_cleanup (xfree
, buf
);
1627 memcpy (buf
, writebuf
, len
);
1629 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1630 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
);
1632 do_cleanups (old_chain
);
1639 restore_show_memory_breakpoints (void *arg
)
1641 show_memory_breakpoints
= (uintptr_t) arg
;
1645 make_show_memory_breakpoints_cleanup (int show
)
1647 int current
= show_memory_breakpoints
;
1649 show_memory_breakpoints
= show
;
1650 return make_cleanup (restore_show_memory_breakpoints
,
1651 (void *) (uintptr_t) current
);
1654 /* For docs see target.h, to_xfer_partial. */
1657 target_xfer_partial (struct target_ops
*ops
,
1658 enum target_object object
, const char *annex
,
1659 void *readbuf
, const void *writebuf
,
1660 ULONGEST offset
, LONGEST len
)
1664 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1666 if (writebuf
&& !may_write_memory
)
1667 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1668 core_addr_to_string_nz (offset
), plongest (len
));
1670 /* If this is a memory transfer, let the memory-specific code
1671 have a look at it instead. Memory transfers are more
1673 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
)
1674 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1675 writebuf
, offset
, len
);
1678 enum target_object raw_object
= object
;
1680 /* If this is a raw memory transfer, request the normal
1681 memory object from other layers. */
1682 if (raw_object
== TARGET_OBJECT_RAW_MEMORY
)
1683 raw_object
= TARGET_OBJECT_MEMORY
;
1685 retval
= ops
->to_xfer_partial (ops
, raw_object
, annex
, readbuf
,
1686 writebuf
, offset
, len
);
1691 const unsigned char *myaddr
= NULL
;
1693 fprintf_unfiltered (gdb_stdlog
,
1694 "%s:target_xfer_partial "
1695 "(%d, %s, %s, %s, %s, %s) = %s",
1698 (annex
? annex
: "(null)"),
1699 host_address_to_string (readbuf
),
1700 host_address_to_string (writebuf
),
1701 core_addr_to_string_nz (offset
),
1702 plongest (len
), plongest (retval
));
1708 if (retval
> 0 && myaddr
!= NULL
)
1712 fputs_unfiltered (", bytes =", gdb_stdlog
);
1713 for (i
= 0; i
< retval
; i
++)
1715 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1717 if (targetdebug
< 2 && i
> 0)
1719 fprintf_unfiltered (gdb_stdlog
, " ...");
1722 fprintf_unfiltered (gdb_stdlog
, "\n");
1725 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1729 fputc_unfiltered ('\n', gdb_stdlog
);
1734 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
1735 GDB's memory at MYADDR. Returns either 0 for success or an errno value
1736 if any error occurs.
1738 If an error occurs, no guarantee is made about the contents of the data at
1739 MYADDR. In particular, the caller should not depend upon partial reads
1740 filling the buffer with good data. There is no way for the caller to know
1741 how much good data might have been transfered anyway. Callers that can
1742 deal with partial reads should call target_read (which will retry until
1743 it makes no progress, and then return how much was transferred). */
1746 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
1748 /* Dispatch to the topmost target, not the flattened current_target.
1749 Memory accesses check target->to_has_(all_)memory, and the
1750 flattened target doesn't inherit those. */
1751 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1752 myaddr
, memaddr
, len
) == len
)
1758 /* Like target_read_memory, but specify explicitly that this is a read from
1759 the target's stack. This may trigger different cache behavior. */
1762 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
1764 /* Dispatch to the topmost target, not the flattened current_target.
1765 Memory accesses check target->to_has_(all_)memory, and the
1766 flattened target doesn't inherit those. */
1768 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1769 myaddr
, memaddr
, len
) == len
)
1775 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1776 Returns either 0 for success or an errno value if any error occurs.
1777 If an error occurs, no guarantee is made about how much data got written.
1778 Callers that can deal with partial writes should call target_write. */
1781 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
1783 /* Dispatch to the topmost target, not the flattened current_target.
1784 Memory accesses check target->to_has_(all_)memory, and the
1785 flattened target doesn't inherit those. */
1786 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1787 myaddr
, memaddr
, len
) == len
)
1793 /* Write LEN bytes from MYADDR to target raw memory at address
1794 MEMADDR. Returns either 0 for success or an errno value if any
1795 error occurs. If an error occurs, no guarantee is made about how
1796 much data got written. Callers that can deal with partial writes
1797 should call target_write. */
1800 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
1802 /* Dispatch to the topmost target, not the flattened current_target.
1803 Memory accesses check target->to_has_(all_)memory, and the
1804 flattened target doesn't inherit those. */
1805 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1806 myaddr
, memaddr
, len
) == len
)
1812 /* Fetch the target's memory map. */
1815 target_memory_map (void)
1817 VEC(mem_region_s
) *result
;
1818 struct mem_region
*last_one
, *this_one
;
1820 struct target_ops
*t
;
1823 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1825 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1826 if (t
->to_memory_map
!= NULL
)
1832 result
= t
->to_memory_map (t
);
1836 qsort (VEC_address (mem_region_s
, result
),
1837 VEC_length (mem_region_s
, result
),
1838 sizeof (struct mem_region
), mem_region_cmp
);
1840 /* Check that regions do not overlap. Simultaneously assign
1841 a numbering for the "mem" commands to use to refer to
1844 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1846 this_one
->number
= ix
;
1848 if (last_one
&& last_one
->hi
> this_one
->lo
)
1850 warning (_("Overlapping regions in memory map: ignoring"));
1851 VEC_free (mem_region_s
, result
);
1854 last_one
= this_one
;
1861 target_flash_erase (ULONGEST address
, LONGEST length
)
1863 struct target_ops
*t
;
1865 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1866 if (t
->to_flash_erase
!= NULL
)
1869 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1870 hex_string (address
), phex (length
, 0));
1871 t
->to_flash_erase (t
, address
, length
);
1879 target_flash_done (void)
1881 struct target_ops
*t
;
1883 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1884 if (t
->to_flash_done
!= NULL
)
1887 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1888 t
->to_flash_done (t
);
1896 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1897 struct cmd_list_element
*c
, const char *value
)
1899 fprintf_filtered (file
,
1900 _("Mode for reading from readonly sections is %s.\n"),
1904 /* More generic transfers. */
1907 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1908 const char *annex
, gdb_byte
*readbuf
,
1909 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1911 if (object
== TARGET_OBJECT_MEMORY
1912 && ops
->deprecated_xfer_memory
!= NULL
)
1913 /* If available, fall back to the target's
1914 "deprecated_xfer_memory" method. */
1919 if (writebuf
!= NULL
)
1921 void *buffer
= xmalloc (len
);
1922 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1924 memcpy (buffer
, writebuf
, len
);
1925 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1926 1/*write*/, NULL
, ops
);
1927 do_cleanups (cleanup
);
1929 if (readbuf
!= NULL
)
1930 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1931 0/*read*/, NULL
, ops
);
1934 else if (xfered
== 0 && errno
== 0)
1935 /* "deprecated_xfer_memory" uses 0, cross checked against
1936 ERRNO as one indication of an error. */
1941 else if (ops
->beneath
!= NULL
)
1942 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1943 readbuf
, writebuf
, offset
, len
);
1948 /* The xfer_partial handler for the topmost target. Unlike the default,
1949 it does not need to handle memory specially; it just passes all
1950 requests down the stack. */
1953 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1954 const char *annex
, gdb_byte
*readbuf
,
1955 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1957 if (ops
->beneath
!= NULL
)
1958 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1959 readbuf
, writebuf
, offset
, len
);
1964 /* Target vector read/write partial wrapper functions. */
1967 target_read_partial (struct target_ops
*ops
,
1968 enum target_object object
,
1969 const char *annex
, gdb_byte
*buf
,
1970 ULONGEST offset
, LONGEST len
)
1972 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
1976 target_write_partial (struct target_ops
*ops
,
1977 enum target_object object
,
1978 const char *annex
, const gdb_byte
*buf
,
1979 ULONGEST offset
, LONGEST len
)
1981 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
1984 /* Wrappers to perform the full transfer. */
1986 /* For docs on target_read see target.h. */
1989 target_read (struct target_ops
*ops
,
1990 enum target_object object
,
1991 const char *annex
, gdb_byte
*buf
,
1992 ULONGEST offset
, LONGEST len
)
1996 while (xfered
< len
)
1998 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
1999 (gdb_byte
*) buf
+ xfered
,
2000 offset
+ xfered
, len
- xfered
);
2002 /* Call an observer, notifying them of the xfer progress? */
2013 /* Assuming that the entire [begin, end) range of memory cannot be
2014 read, try to read whatever subrange is possible to read.
2016 The function returns, in RESULT, either zero or one memory block.
2017 If there's a readable subrange at the beginning, it is completely
2018 read and returned. Any further readable subrange will not be read.
2019 Otherwise, if there's a readable subrange at the end, it will be
2020 completely read and returned. Any readable subranges before it
2021 (obviously, not starting at the beginning), will be ignored. In
2022 other cases -- either no readable subrange, or readable subrange(s)
2023 that is neither at the beginning, or end, nothing is returned.
2025 The purpose of this function is to handle a read across a boundary
2026 of accessible memory in a case when memory map is not available.
2027 The above restrictions are fine for this case, but will give
2028 incorrect results if the memory is 'patchy'. However, supporting
2029 'patchy' memory would require trying to read every single byte,
2030 and it seems unacceptable solution. Explicit memory map is
2031 recommended for this case -- and target_read_memory_robust will
2032 take care of reading multiple ranges then. */
2035 read_whatever_is_readable (struct target_ops
*ops
,
2036 ULONGEST begin
, ULONGEST end
,
2037 VEC(memory_read_result_s
) **result
)
2039 gdb_byte
*buf
= xmalloc (end
- begin
);
2040 ULONGEST current_begin
= begin
;
2041 ULONGEST current_end
= end
;
2043 memory_read_result_s r
;
2045 /* If we previously failed to read 1 byte, nothing can be done here. */
2046 if (end
- begin
<= 1)
2052 /* Check that either first or the last byte is readable, and give up
2053 if not. This heuristic is meant to permit reading accessible memory
2054 at the boundary of accessible region. */
2055 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2056 buf
, begin
, 1) == 1)
2061 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2062 buf
+ (end
-begin
) - 1, end
- 1, 1) == 1)
2073 /* Loop invariant is that the [current_begin, current_end) was previously
2074 found to be not readable as a whole.
2076 Note loop condition -- if the range has 1 byte, we can't divide the range
2077 so there's no point trying further. */
2078 while (current_end
- current_begin
> 1)
2080 ULONGEST first_half_begin
, first_half_end
;
2081 ULONGEST second_half_begin
, second_half_end
;
2083 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2087 first_half_begin
= current_begin
;
2088 first_half_end
= middle
;
2089 second_half_begin
= middle
;
2090 second_half_end
= current_end
;
2094 first_half_begin
= middle
;
2095 first_half_end
= current_end
;
2096 second_half_begin
= current_begin
;
2097 second_half_end
= middle
;
2100 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2101 buf
+ (first_half_begin
- begin
),
2103 first_half_end
- first_half_begin
);
2105 if (xfer
== first_half_end
- first_half_begin
)
2107 /* This half reads up fine. So, the error must be in the
2109 current_begin
= second_half_begin
;
2110 current_end
= second_half_end
;
2114 /* This half is not readable. Because we've tried one byte, we
2115 know some part of this half if actually redable. Go to the next
2116 iteration to divide again and try to read.
2118 We don't handle the other half, because this function only tries
2119 to read a single readable subrange. */
2120 current_begin
= first_half_begin
;
2121 current_end
= first_half_end
;
2127 /* The [begin, current_begin) range has been read. */
2129 r
.end
= current_begin
;
2134 /* The [current_end, end) range has been read. */
2135 LONGEST rlen
= end
- current_end
;
2137 r
.data
= xmalloc (rlen
);
2138 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2139 r
.begin
= current_end
;
2143 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2147 free_memory_read_result_vector (void *x
)
2149 VEC(memory_read_result_s
) *v
= x
;
2150 memory_read_result_s
*current
;
2153 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2155 xfree (current
->data
);
2157 VEC_free (memory_read_result_s
, v
);
2160 VEC(memory_read_result_s
) *
2161 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2163 VEC(memory_read_result_s
) *result
= 0;
2166 while (xfered
< len
)
2168 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2171 /* If there is no explicit region, a fake one should be created. */
2172 gdb_assert (region
);
2174 if (region
->hi
== 0)
2175 rlen
= len
- xfered
;
2177 rlen
= region
->hi
- offset
;
2179 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2181 /* Cannot read this region. Note that we can end up here only
2182 if the region is explicitly marked inaccessible, or
2183 'inaccessible-by-default' is in effect. */
2188 LONGEST to_read
= min (len
- xfered
, rlen
);
2189 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2191 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2192 (gdb_byte
*) buffer
,
2193 offset
+ xfered
, to_read
);
2194 /* Call an observer, notifying them of the xfer progress? */
2197 /* Got an error reading full chunk. See if maybe we can read
2200 read_whatever_is_readable (ops
, offset
+ xfered
,
2201 offset
+ xfered
+ to_read
, &result
);
2206 struct memory_read_result r
;
2208 r
.begin
= offset
+ xfered
;
2209 r
.end
= r
.begin
+ xfer
;
2210 VEC_safe_push (memory_read_result_s
, result
, &r
);
2220 /* An alternative to target_write with progress callbacks. */
2223 target_write_with_progress (struct target_ops
*ops
,
2224 enum target_object object
,
2225 const char *annex
, const gdb_byte
*buf
,
2226 ULONGEST offset
, LONGEST len
,
2227 void (*progress
) (ULONGEST
, void *), void *baton
)
2231 /* Give the progress callback a chance to set up. */
2233 (*progress
) (0, baton
);
2235 while (xfered
< len
)
2237 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
2238 (gdb_byte
*) buf
+ xfered
,
2239 offset
+ xfered
, len
- xfered
);
2247 (*progress
) (xfer
, baton
);
2255 /* For docs on target_write see target.h. */
2258 target_write (struct target_ops
*ops
,
2259 enum target_object object
,
2260 const char *annex
, const gdb_byte
*buf
,
2261 ULONGEST offset
, LONGEST len
)
2263 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2267 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2268 the size of the transferred data. PADDING additional bytes are
2269 available in *BUF_P. This is a helper function for
2270 target_read_alloc; see the declaration of that function for more
2274 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2275 const char *annex
, gdb_byte
**buf_p
, int padding
)
2277 size_t buf_alloc
, buf_pos
;
2281 /* This function does not have a length parameter; it reads the
2282 entire OBJECT). Also, it doesn't support objects fetched partly
2283 from one target and partly from another (in a different stratum,
2284 e.g. a core file and an executable). Both reasons make it
2285 unsuitable for reading memory. */
2286 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2288 /* Start by reading up to 4K at a time. The target will throttle
2289 this number down if necessary. */
2291 buf
= xmalloc (buf_alloc
);
2295 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2296 buf_pos
, buf_alloc
- buf_pos
- padding
);
2299 /* An error occurred. */
2305 /* Read all there was. */
2315 /* If the buffer is filling up, expand it. */
2316 if (buf_alloc
< buf_pos
* 2)
2319 buf
= xrealloc (buf
, buf_alloc
);
2326 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2327 the size of the transferred data. See the declaration in "target.h"
2328 function for more information about the return value. */
2331 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2332 const char *annex
, gdb_byte
**buf_p
)
2334 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2337 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2338 returned as a string, allocated using xmalloc. If an error occurs
2339 or the transfer is unsupported, NULL is returned. Empty objects
2340 are returned as allocated but empty strings. A warning is issued
2341 if the result contains any embedded NUL bytes. */
2344 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2348 LONGEST i
, transferred
;
2350 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2352 if (transferred
< 0)
2355 if (transferred
== 0)
2356 return xstrdup ("");
2358 buffer
[transferred
] = 0;
2360 /* Check for embedded NUL bytes; but allow trailing NULs. */
2361 for (i
= strlen (buffer
); i
< transferred
; i
++)
2364 warning (_("target object %d, annex %s, "
2365 "contained unexpected null characters"),
2366 (int) object
, annex
? annex
: "(none)");
2370 return (char *) buffer
;
2373 /* Memory transfer methods. */
2376 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2379 /* This method is used to read from an alternate, non-current
2380 target. This read must bypass the overlay support (as symbols
2381 don't match this target), and GDB's internal cache (wrong cache
2382 for this target). */
2383 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2385 memory_error (EIO
, addr
);
2389 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2390 int len
, enum bfd_endian byte_order
)
2392 gdb_byte buf
[sizeof (ULONGEST
)];
2394 gdb_assert (len
<= sizeof (buf
));
2395 get_target_memory (ops
, addr
, buf
, len
);
2396 return extract_unsigned_integer (buf
, len
, byte_order
);
2400 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2401 struct bp_target_info
*bp_tgt
)
2403 if (!may_insert_breakpoints
)
2405 warning (_("May not insert breakpoints"));
2409 return (*current_target
.to_insert_breakpoint
) (gdbarch
, bp_tgt
);
2413 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2414 struct bp_target_info
*bp_tgt
)
2416 /* This is kind of a weird case to handle, but the permission might
2417 have been changed after breakpoints were inserted - in which case
2418 we should just take the user literally and assume that any
2419 breakpoints should be left in place. */
2420 if (!may_insert_breakpoints
)
2422 warning (_("May not remove breakpoints"));
2426 return (*current_target
.to_remove_breakpoint
) (gdbarch
, bp_tgt
);
2430 target_info (char *args
, int from_tty
)
2432 struct target_ops
*t
;
2433 int has_all_mem
= 0;
2435 if (symfile_objfile
!= NULL
)
2436 printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile
->name
);
2438 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2440 if (!(*t
->to_has_memory
) (t
))
2443 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2446 printf_unfiltered (_("\tWhile running this, "
2447 "GDB does not access memory from...\n"));
2448 printf_unfiltered ("%s:\n", t
->to_longname
);
2449 (t
->to_files_info
) (t
);
2450 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2454 /* This function is called before any new inferior is created, e.g.
2455 by running a program, attaching, or connecting to a target.
2456 It cleans up any state from previous invocations which might
2457 change between runs. This is a subset of what target_preopen
2458 resets (things which might change between targets). */
2461 target_pre_inferior (int from_tty
)
2463 /* Clear out solib state. Otherwise the solib state of the previous
2464 inferior might have survived and is entirely wrong for the new
2465 target. This has been observed on GNU/Linux using glibc 2.3. How
2477 Cannot access memory at address 0xdeadbeef
2480 /* In some OSs, the shared library list is the same/global/shared
2481 across inferiors. If code is shared between processes, so are
2482 memory regions and features. */
2483 if (!gdbarch_has_global_solist (target_gdbarch
))
2485 no_shared_libraries (NULL
, from_tty
);
2487 invalidate_target_mem_regions ();
2489 target_clear_description ();
2493 /* Callback for iterate_over_inferiors. Gets rid of the given
2497 dispose_inferior (struct inferior
*inf
, void *args
)
2499 struct thread_info
*thread
;
2501 thread
= any_thread_of_process (inf
->pid
);
2504 switch_to_thread (thread
->ptid
);
2506 /* Core inferiors actually should be detached, not killed. */
2507 if (target_has_execution
)
2510 target_detach (NULL
, 0);
2516 /* This is to be called by the open routine before it does
2520 target_preopen (int from_tty
)
2524 if (have_inferiors ())
2527 || !have_live_inferiors ()
2528 || query (_("A program is being debugged already. Kill it? ")))
2529 iterate_over_inferiors (dispose_inferior
, NULL
);
2531 error (_("Program not killed."));
2534 /* Calling target_kill may remove the target from the stack. But if
2535 it doesn't (which seems like a win for UDI), remove it now. */
2536 /* Leave the exec target, though. The user may be switching from a
2537 live process to a core of the same program. */
2538 pop_all_targets_above (file_stratum
, 0);
2540 target_pre_inferior (from_tty
);
2543 /* Detach a target after doing deferred register stores. */
2546 target_detach (char *args
, int from_tty
)
2548 struct target_ops
* t
;
2550 if (gdbarch_has_global_breakpoints (target_gdbarch
))
2551 /* Don't remove global breakpoints here. They're removed on
2552 disconnection from the target. */
2555 /* If we're in breakpoints-always-inserted mode, have to remove
2556 them before detaching. */
2557 remove_breakpoints_pid (PIDGET (inferior_ptid
));
2559 prepare_for_detach ();
2561 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2563 if (t
->to_detach
!= NULL
)
2565 t
->to_detach (t
, args
, from_tty
);
2567 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2573 internal_error (__FILE__
, __LINE__
, _("could not find a target to detach"));
2577 target_disconnect (char *args
, int from_tty
)
2579 struct target_ops
*t
;
2581 /* If we're in breakpoints-always-inserted mode or if breakpoints
2582 are global across processes, we have to remove them before
2584 remove_breakpoints ();
2586 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2587 if (t
->to_disconnect
!= NULL
)
2590 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2592 t
->to_disconnect (t
, args
, from_tty
);
2600 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2602 struct target_ops
*t
;
2604 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2606 if (t
->to_wait
!= NULL
)
2608 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2612 char *status_string
;
2614 status_string
= target_waitstatus_to_string (status
);
2615 fprintf_unfiltered (gdb_stdlog
,
2616 "target_wait (%d, status) = %d, %s\n",
2617 PIDGET (ptid
), PIDGET (retval
),
2619 xfree (status_string
);
2630 target_pid_to_str (ptid_t ptid
)
2632 struct target_ops
*t
;
2634 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2636 if (t
->to_pid_to_str
!= NULL
)
2637 return (*t
->to_pid_to_str
) (t
, ptid
);
2640 return normal_pid_to_str (ptid
);
2644 target_thread_name (struct thread_info
*info
)
2646 struct target_ops
*t
;
2648 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2650 if (t
->to_thread_name
!= NULL
)
2651 return (*t
->to_thread_name
) (info
);
2658 target_resume (ptid_t ptid
, int step
, enum target_signal signal
)
2660 struct target_ops
*t
;
2662 target_dcache_invalidate ();
2664 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2666 if (t
->to_resume
!= NULL
)
2668 t
->to_resume (t
, ptid
, step
, signal
);
2670 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2672 step
? "step" : "continue",
2673 target_signal_to_name (signal
));
2675 registers_changed_ptid (ptid
);
2676 set_executing (ptid
, 1);
2677 set_running (ptid
, 1);
2678 clear_inline_frame_state (ptid
);
2687 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2689 struct target_ops
*t
;
2691 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2693 if (t
->to_pass_signals
!= NULL
)
2699 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2702 for (i
= 0; i
< numsigs
; i
++)
2703 if (pass_signals
[i
])
2704 fprintf_unfiltered (gdb_stdlog
, " %s",
2705 target_signal_to_name (i
));
2707 fprintf_unfiltered (gdb_stdlog
, " })\n");
2710 (*t
->to_pass_signals
) (numsigs
, pass_signals
);
2716 /* Look through the list of possible targets for a target that can
2720 target_follow_fork (int follow_child
)
2722 struct target_ops
*t
;
2724 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2726 if (t
->to_follow_fork
!= NULL
)
2728 int retval
= t
->to_follow_fork (t
, follow_child
);
2731 fprintf_unfiltered (gdb_stdlog
, "target_follow_fork (%d) = %d\n",
2732 follow_child
, retval
);
2737 /* Some target returned a fork event, but did not know how to follow it. */
2738 internal_error (__FILE__
, __LINE__
,
2739 _("could not find a target to follow fork"));
2743 target_mourn_inferior (void)
2745 struct target_ops
*t
;
2747 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2749 if (t
->to_mourn_inferior
!= NULL
)
2751 t
->to_mourn_inferior (t
);
2753 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2755 /* We no longer need to keep handles on any of the object files.
2756 Make sure to release them to avoid unnecessarily locking any
2757 of them while we're not actually debugging. */
2758 bfd_cache_close_all ();
2764 internal_error (__FILE__
, __LINE__
,
2765 _("could not find a target to follow mourn inferior"));
2768 /* Look for a target which can describe architectural features, starting
2769 from TARGET. If we find one, return its description. */
2771 const struct target_desc
*
2772 target_read_description (struct target_ops
*target
)
2774 struct target_ops
*t
;
2776 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2777 if (t
->to_read_description
!= NULL
)
2779 const struct target_desc
*tdesc
;
2781 tdesc
= t
->to_read_description (t
);
2789 /* The default implementation of to_search_memory.
2790 This implements a basic search of memory, reading target memory and
2791 performing the search here (as opposed to performing the search in on the
2792 target side with, for example, gdbserver). */
2795 simple_search_memory (struct target_ops
*ops
,
2796 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2797 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2798 CORE_ADDR
*found_addrp
)
2800 /* NOTE: also defined in find.c testcase. */
2801 #define SEARCH_CHUNK_SIZE 16000
2802 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2803 /* Buffer to hold memory contents for searching. */
2804 gdb_byte
*search_buf
;
2805 unsigned search_buf_size
;
2806 struct cleanup
*old_cleanups
;
2808 search_buf_size
= chunk_size
+ pattern_len
- 1;
2810 /* No point in trying to allocate a buffer larger than the search space. */
2811 if (search_space_len
< search_buf_size
)
2812 search_buf_size
= search_space_len
;
2814 search_buf
= malloc (search_buf_size
);
2815 if (search_buf
== NULL
)
2816 error (_("Unable to allocate memory to perform the search."));
2817 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2819 /* Prime the search buffer. */
2821 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2822 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2824 warning (_("Unable to access target memory at %s, halting search."),
2825 hex_string (start_addr
));
2826 do_cleanups (old_cleanups
);
2830 /* Perform the search.
2832 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2833 When we've scanned N bytes we copy the trailing bytes to the start and
2834 read in another N bytes. */
2836 while (search_space_len
>= pattern_len
)
2838 gdb_byte
*found_ptr
;
2839 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2841 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2842 pattern
, pattern_len
);
2844 if (found_ptr
!= NULL
)
2846 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2848 *found_addrp
= found_addr
;
2849 do_cleanups (old_cleanups
);
2853 /* Not found in this chunk, skip to next chunk. */
2855 /* Don't let search_space_len wrap here, it's unsigned. */
2856 if (search_space_len
>= chunk_size
)
2857 search_space_len
-= chunk_size
;
2859 search_space_len
= 0;
2861 if (search_space_len
>= pattern_len
)
2863 unsigned keep_len
= search_buf_size
- chunk_size
;
2864 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2867 /* Copy the trailing part of the previous iteration to the front
2868 of the buffer for the next iteration. */
2869 gdb_assert (keep_len
== pattern_len
- 1);
2870 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2872 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2874 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2875 search_buf
+ keep_len
, read_addr
,
2876 nr_to_read
) != nr_to_read
)
2878 warning (_("Unable to access target "
2879 "memory at %s, halting search."),
2880 hex_string (read_addr
));
2881 do_cleanups (old_cleanups
);
2885 start_addr
+= chunk_size
;
2891 do_cleanups (old_cleanups
);
2895 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2896 sequence of bytes in PATTERN with length PATTERN_LEN.
2898 The result is 1 if found, 0 if not found, and -1 if there was an error
2899 requiring halting of the search (e.g. memory read error).
2900 If the pattern is found the address is recorded in FOUND_ADDRP. */
2903 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2904 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2905 CORE_ADDR
*found_addrp
)
2907 struct target_ops
*t
;
2910 /* We don't use INHERIT to set current_target.to_search_memory,
2911 so we have to scan the target stack and handle targetdebug
2915 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2916 hex_string (start_addr
));
2918 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2919 if (t
->to_search_memory
!= NULL
)
2924 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2925 pattern
, pattern_len
, found_addrp
);
2929 /* If a special version of to_search_memory isn't available, use the
2931 found
= simple_search_memory (current_target
.beneath
,
2932 start_addr
, search_space_len
,
2933 pattern
, pattern_len
, found_addrp
);
2937 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2942 /* Look through the currently pushed targets. If none of them will
2943 be able to restart the currently running process, issue an error
2947 target_require_runnable (void)
2949 struct target_ops
*t
;
2951 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2953 /* If this target knows how to create a new program, then
2954 assume we will still be able to after killing the current
2955 one. Either killing and mourning will not pop T, or else
2956 find_default_run_target will find it again. */
2957 if (t
->to_create_inferior
!= NULL
)
2960 /* Do not worry about thread_stratum targets that can not
2961 create inferiors. Assume they will be pushed again if
2962 necessary, and continue to the process_stratum. */
2963 if (t
->to_stratum
== thread_stratum
2964 || t
->to_stratum
== arch_stratum
)
2967 error (_("The \"%s\" target does not support \"run\". "
2968 "Try \"help target\" or \"continue\"."),
2972 /* This function is only called if the target is running. In that
2973 case there should have been a process_stratum target and it
2974 should either know how to create inferiors, or not... */
2975 internal_error (__FILE__
, __LINE__
, _("No targets found"));
2978 /* Look through the list of possible targets for a target that can
2979 execute a run or attach command without any other data. This is
2980 used to locate the default process stratum.
2982 If DO_MESG is not NULL, the result is always valid (error() is
2983 called for errors); else, return NULL on error. */
2985 static struct target_ops
*
2986 find_default_run_target (char *do_mesg
)
2988 struct target_ops
**t
;
2989 struct target_ops
*runable
= NULL
;
2994 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2997 if ((*t
)->to_can_run
&& target_can_run (*t
))
3007 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3016 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3018 struct target_ops
*t
;
3020 t
= find_default_run_target ("attach");
3021 (t
->to_attach
) (t
, args
, from_tty
);
3026 find_default_create_inferior (struct target_ops
*ops
,
3027 char *exec_file
, char *allargs
, char **env
,
3030 struct target_ops
*t
;
3032 t
= find_default_run_target ("run");
3033 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3038 find_default_can_async_p (void)
3040 struct target_ops
*t
;
3042 /* This may be called before the target is pushed on the stack;
3043 look for the default process stratum. If there's none, gdb isn't
3044 configured with a native debugger, and target remote isn't
3046 t
= find_default_run_target (NULL
);
3047 if (t
&& t
->to_can_async_p
)
3048 return (t
->to_can_async_p
) ();
3053 find_default_is_async_p (void)
3055 struct target_ops
*t
;
3057 /* This may be called before the target is pushed on the stack;
3058 look for the default process stratum. If there's none, gdb isn't
3059 configured with a native debugger, and target remote isn't
3061 t
= find_default_run_target (NULL
);
3062 if (t
&& t
->to_is_async_p
)
3063 return (t
->to_is_async_p
) ();
3068 find_default_supports_non_stop (void)
3070 struct target_ops
*t
;
3072 t
= find_default_run_target (NULL
);
3073 if (t
&& t
->to_supports_non_stop
)
3074 return (t
->to_supports_non_stop
) ();
3079 target_supports_non_stop (void)
3081 struct target_ops
*t
;
3083 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3084 if (t
->to_supports_non_stop
)
3085 return t
->to_supports_non_stop ();
3091 find_default_supports_disable_randomization (void)
3093 struct target_ops
*t
;
3095 t
= find_default_run_target (NULL
);
3096 if (t
&& t
->to_supports_disable_randomization
)
3097 return (t
->to_supports_disable_randomization
) ();
3102 target_supports_disable_randomization (void)
3104 struct target_ops
*t
;
3106 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3107 if (t
->to_supports_disable_randomization
)
3108 return t
->to_supports_disable_randomization ();
3114 target_get_osdata (const char *type
)
3116 struct target_ops
*t
;
3118 /* If we're already connected to something that can get us OS
3119 related data, use it. Otherwise, try using the native
3121 if (current_target
.to_stratum
>= process_stratum
)
3122 t
= current_target
.beneath
;
3124 t
= find_default_run_target ("get OS data");
3129 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3132 /* Determine the current address space of thread PTID. */
3134 struct address_space
*
3135 target_thread_address_space (ptid_t ptid
)
3137 struct address_space
*aspace
;
3138 struct inferior
*inf
;
3139 struct target_ops
*t
;
3141 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3143 if (t
->to_thread_address_space
!= NULL
)
3145 aspace
= t
->to_thread_address_space (t
, ptid
);
3146 gdb_assert (aspace
);
3149 fprintf_unfiltered (gdb_stdlog
,
3150 "target_thread_address_space (%s) = %d\n",
3151 target_pid_to_str (ptid
),
3152 address_space_num (aspace
));
3157 /* Fall-back to the "main" address space of the inferior. */
3158 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3160 if (inf
== NULL
|| inf
->aspace
== NULL
)
3161 internal_error (__FILE__
, __LINE__
,
3162 _("Can't determine the current "
3163 "address space of thread %s\n"),
3164 target_pid_to_str (ptid
));
3170 /* Target file operations. */
3172 static struct target_ops
*
3173 default_fileio_target (void)
3175 /* If we're already connected to something that can perform
3176 file I/O, use it. Otherwise, try using the native target. */
3177 if (current_target
.to_stratum
>= process_stratum
)
3178 return current_target
.beneath
;
3180 return find_default_run_target ("file I/O");
3183 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3184 target file descriptor, or -1 if an error occurs (and set
3187 target_fileio_open (const char *filename
, int flags
, int mode
,
3190 struct target_ops
*t
;
3192 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3194 if (t
->to_fileio_open
!= NULL
)
3196 int fd
= t
->to_fileio_open (filename
, flags
, mode
, target_errno
);
3199 fprintf_unfiltered (gdb_stdlog
,
3200 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3201 filename
, flags
, mode
,
3202 fd
, fd
!= -1 ? 0 : *target_errno
);
3207 *target_errno
= FILEIO_ENOSYS
;
3211 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3212 Return the number of bytes written, or -1 if an error occurs
3213 (and set *TARGET_ERRNO). */
3215 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3216 ULONGEST offset
, int *target_errno
)
3218 struct target_ops
*t
;
3220 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3222 if (t
->to_fileio_pwrite
!= NULL
)
3224 int ret
= t
->to_fileio_pwrite (fd
, write_buf
, len
, offset
,
3228 fprintf_unfiltered (gdb_stdlog
,
3229 "target_fileio_pwrite (%d,%p,%d,%s) "
3231 fd
, write_buf
, len
, pulongest (offset
),
3232 ret
, ret
!= -1 ? 0 : *target_errno
);
3237 *target_errno
= FILEIO_ENOSYS
;
3241 /* Read up to LEN bytes FD on the target into READ_BUF.
3242 Return the number of bytes read, or -1 if an error occurs
3243 (and set *TARGET_ERRNO). */
3245 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3246 ULONGEST offset
, int *target_errno
)
3248 struct target_ops
*t
;
3250 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3252 if (t
->to_fileio_pread
!= NULL
)
3254 int ret
= t
->to_fileio_pread (fd
, read_buf
, len
, offset
,
3258 fprintf_unfiltered (gdb_stdlog
,
3259 "target_fileio_pread (%d,%p,%d,%s) "
3261 fd
, read_buf
, len
, pulongest (offset
),
3262 ret
, ret
!= -1 ? 0 : *target_errno
);
3267 *target_errno
= FILEIO_ENOSYS
;
3271 /* Close FD on the target. Return 0, or -1 if an error occurs
3272 (and set *TARGET_ERRNO). */
3274 target_fileio_close (int fd
, int *target_errno
)
3276 struct target_ops
*t
;
3278 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3280 if (t
->to_fileio_close
!= NULL
)
3282 int ret
= t
->to_fileio_close (fd
, target_errno
);
3285 fprintf_unfiltered (gdb_stdlog
,
3286 "target_fileio_close (%d) = %d (%d)\n",
3287 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3292 *target_errno
= FILEIO_ENOSYS
;
3296 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3297 occurs (and set *TARGET_ERRNO). */
3299 target_fileio_unlink (const char *filename
, int *target_errno
)
3301 struct target_ops
*t
;
3303 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3305 if (t
->to_fileio_unlink
!= NULL
)
3307 int ret
= t
->to_fileio_unlink (filename
, target_errno
);
3310 fprintf_unfiltered (gdb_stdlog
,
3311 "target_fileio_unlink (%s) = %d (%d)\n",
3312 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3317 *target_errno
= FILEIO_ENOSYS
;
3322 target_fileio_close_cleanup (void *opaque
)
3324 int fd
= *(int *) opaque
;
3327 target_fileio_close (fd
, &target_errno
);
3330 /* Read target file FILENAME. Store the result in *BUF_P and
3331 return the size of the transferred data. PADDING additional bytes are
3332 available in *BUF_P. This is a helper function for
3333 target_fileio_read_alloc; see the declaration of that function for more
3337 target_fileio_read_alloc_1 (const char *filename
,
3338 gdb_byte
**buf_p
, int padding
)
3340 struct cleanup
*close_cleanup
;
3341 size_t buf_alloc
, buf_pos
;
3347 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3351 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3353 /* Start by reading up to 4K at a time. The target will throttle
3354 this number down if necessary. */
3356 buf
= xmalloc (buf_alloc
);
3360 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3361 buf_alloc
- buf_pos
- padding
, buf_pos
,
3365 /* An error occurred. */
3366 do_cleanups (close_cleanup
);
3372 /* Read all there was. */
3373 do_cleanups (close_cleanup
);
3383 /* If the buffer is filling up, expand it. */
3384 if (buf_alloc
< buf_pos
* 2)
3387 buf
= xrealloc (buf
, buf_alloc
);
3394 /* Read target file FILENAME. Store the result in *BUF_P and return
3395 the size of the transferred data. See the declaration in "target.h"
3396 function for more information about the return value. */
3399 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3401 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3404 /* Read target file FILENAME. The result is NUL-terminated and
3405 returned as a string, allocated using xmalloc. If an error occurs
3406 or the transfer is unsupported, NULL is returned. Empty objects
3407 are returned as allocated but empty strings. A warning is issued
3408 if the result contains any embedded NUL bytes. */
3411 target_fileio_read_stralloc (const char *filename
)
3414 LONGEST i
, transferred
;
3416 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3418 if (transferred
< 0)
3421 if (transferred
== 0)
3422 return xstrdup ("");
3424 buffer
[transferred
] = 0;
3426 /* Check for embedded NUL bytes; but allow trailing NULs. */
3427 for (i
= strlen (buffer
); i
< transferred
; i
++)
3430 warning (_("target file %s "
3431 "contained unexpected null characters"),
3436 return (char *) buffer
;
3441 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3443 return (len
<= gdbarch_ptr_bit (target_gdbarch
) / TARGET_CHAR_BIT
);
3447 default_watchpoint_addr_within_range (struct target_ops
*target
,
3449 CORE_ADDR start
, int length
)
3451 return addr
>= start
&& addr
< start
+ length
;
3454 static struct gdbarch
*
3455 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3457 return target_gdbarch
;
3473 return_minus_one (void)
3478 /* Find a single runnable target in the stack and return it. If for
3479 some reason there is more than one, return NULL. */
3482 find_run_target (void)
3484 struct target_ops
**t
;
3485 struct target_ops
*runable
= NULL
;
3490 for (t
= target_structs
; t
< target_structs
+ target_struct_size
; ++t
)
3492 if ((*t
)->to_can_run
&& target_can_run (*t
))
3499 return (count
== 1 ? runable
: NULL
);
3503 * Find the next target down the stack from the specified target.
3507 find_target_beneath (struct target_ops
*t
)
3513 /* The inferior process has died. Long live the inferior! */
3516 generic_mourn_inferior (void)
3520 ptid
= inferior_ptid
;
3521 inferior_ptid
= null_ptid
;
3523 if (!ptid_equal (ptid
, null_ptid
))
3525 int pid
= ptid_get_pid (ptid
);
3526 exit_inferior (pid
);
3529 breakpoint_init_inferior (inf_exited
);
3530 registers_changed ();
3532 reopen_exec_file ();
3533 reinit_frame_cache ();
3535 if (deprecated_detach_hook
)
3536 deprecated_detach_hook ();
3539 /* Helper function for child_wait and the derivatives of child_wait.
3540 HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
3541 translation of that in OURSTATUS. */
3543 store_waitstatus (struct target_waitstatus
*ourstatus
, int hoststatus
)
3545 if (WIFEXITED (hoststatus
))
3547 ourstatus
->kind
= TARGET_WAITKIND_EXITED
;
3548 ourstatus
->value
.integer
= WEXITSTATUS (hoststatus
);
3550 else if (!WIFSTOPPED (hoststatus
))
3552 ourstatus
->kind
= TARGET_WAITKIND_SIGNALLED
;
3553 ourstatus
->value
.sig
= target_signal_from_host (WTERMSIG (hoststatus
));
3557 ourstatus
->kind
= TARGET_WAITKIND_STOPPED
;
3558 ourstatus
->value
.sig
= target_signal_from_host (WSTOPSIG (hoststatus
));
3562 /* Convert a normal process ID to a string. Returns the string in a
3566 normal_pid_to_str (ptid_t ptid
)
3568 static char buf
[32];
3570 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3575 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3577 return normal_pid_to_str (ptid
);
3580 /* Error-catcher for target_find_memory_regions. */
3582 dummy_find_memory_regions (find_memory_region_ftype ignore1
, void *ignore2
)
3584 error (_("Command not implemented for this target."));
3588 /* Error-catcher for target_make_corefile_notes. */
3590 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
3592 error (_("Command not implemented for this target."));
3596 /* Error-catcher for target_get_bookmark. */
3598 dummy_get_bookmark (char *ignore1
, int ignore2
)
3604 /* Error-catcher for target_goto_bookmark. */
3606 dummy_goto_bookmark (gdb_byte
*ignore
, int from_tty
)
3611 /* Set up the handful of non-empty slots needed by the dummy target
3615 init_dummy_target (void)
3617 dummy_target
.to_shortname
= "None";
3618 dummy_target
.to_longname
= "None";
3619 dummy_target
.to_doc
= "";
3620 dummy_target
.to_attach
= find_default_attach
;
3621 dummy_target
.to_detach
=
3622 (void (*)(struct target_ops
*, char *, int))target_ignore
;
3623 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3624 dummy_target
.to_can_async_p
= find_default_can_async_p
;
3625 dummy_target
.to_is_async_p
= find_default_is_async_p
;
3626 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3627 dummy_target
.to_supports_disable_randomization
3628 = find_default_supports_disable_randomization
;
3629 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3630 dummy_target
.to_stratum
= dummy_stratum
;
3631 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
3632 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
3633 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
3634 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
3635 dummy_target
.to_xfer_partial
= default_xfer_partial
;
3636 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3637 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3638 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3639 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3640 dummy_target
.to_has_execution
3641 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3642 dummy_target
.to_stopped_by_watchpoint
= return_zero
;
3643 dummy_target
.to_stopped_data_address
=
3644 (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
;
3645 dummy_target
.to_magic
= OPS_MAGIC
;
3649 debug_to_open (char *args
, int from_tty
)
3651 debug_target
.to_open (args
, from_tty
);
3653 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3657 target_close (struct target_ops
*targ
, int quitting
)
3659 if (targ
->to_xclose
!= NULL
)
3660 targ
->to_xclose (targ
, quitting
);
3661 else if (targ
->to_close
!= NULL
)
3662 targ
->to_close (quitting
);
3665 fprintf_unfiltered (gdb_stdlog
, "target_close (%d)\n", quitting
);
3669 target_attach (char *args
, int from_tty
)
3671 struct target_ops
*t
;
3673 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3675 if (t
->to_attach
!= NULL
)
3677 t
->to_attach (t
, args
, from_tty
);
3679 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3685 internal_error (__FILE__
, __LINE__
,
3686 _("could not find a target to attach"));
3690 target_thread_alive (ptid_t ptid
)
3692 struct target_ops
*t
;
3694 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3696 if (t
->to_thread_alive
!= NULL
)
3700 retval
= t
->to_thread_alive (t
, ptid
);
3702 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3703 PIDGET (ptid
), retval
);
3713 target_find_new_threads (void)
3715 struct target_ops
*t
;
3717 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3719 if (t
->to_find_new_threads
!= NULL
)
3721 t
->to_find_new_threads (t
);
3723 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3731 target_stop (ptid_t ptid
)
3735 warning (_("May not interrupt or stop the target, ignoring attempt"));
3739 (*current_target
.to_stop
) (ptid
);
3743 debug_to_post_attach (int pid
)
3745 debug_target
.to_post_attach (pid
);
3747 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3750 /* Return a pretty printed form of target_waitstatus.
3751 Space for the result is malloc'd, caller must free. */
3754 target_waitstatus_to_string (const struct target_waitstatus
*ws
)
3756 const char *kind_str
= "status->kind = ";
3760 case TARGET_WAITKIND_EXITED
:
3761 return xstrprintf ("%sexited, status = %d",
3762 kind_str
, ws
->value
.integer
);
3763 case TARGET_WAITKIND_STOPPED
:
3764 return xstrprintf ("%sstopped, signal = %s",
3765 kind_str
, target_signal_to_name (ws
->value
.sig
));
3766 case TARGET_WAITKIND_SIGNALLED
:
3767 return xstrprintf ("%ssignalled, signal = %s",
3768 kind_str
, target_signal_to_name (ws
->value
.sig
));
3769 case TARGET_WAITKIND_LOADED
:
3770 return xstrprintf ("%sloaded", kind_str
);
3771 case TARGET_WAITKIND_FORKED
:
3772 return xstrprintf ("%sforked", kind_str
);
3773 case TARGET_WAITKIND_VFORKED
:
3774 return xstrprintf ("%svforked", kind_str
);
3775 case TARGET_WAITKIND_EXECD
:
3776 return xstrprintf ("%sexecd", kind_str
);
3777 case TARGET_WAITKIND_SYSCALL_ENTRY
:
3778 return xstrprintf ("%sentered syscall", kind_str
);
3779 case TARGET_WAITKIND_SYSCALL_RETURN
:
3780 return xstrprintf ("%sexited syscall", kind_str
);
3781 case TARGET_WAITKIND_SPURIOUS
:
3782 return xstrprintf ("%sspurious", kind_str
);
3783 case TARGET_WAITKIND_IGNORE
:
3784 return xstrprintf ("%signore", kind_str
);
3785 case TARGET_WAITKIND_NO_HISTORY
:
3786 return xstrprintf ("%sno-history", kind_str
);
3787 case TARGET_WAITKIND_NO_RESUMED
:
3788 return xstrprintf ("%sno-resumed", kind_str
);
3790 return xstrprintf ("%sunknown???", kind_str
);
3795 debug_print_register (const char * func
,
3796 struct regcache
*regcache
, int regno
)
3798 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3800 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3801 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3802 && gdbarch_register_name (gdbarch
, regno
) != NULL
3803 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3804 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3805 gdbarch_register_name (gdbarch
, regno
));
3807 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3808 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3810 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3811 int i
, size
= register_size (gdbarch
, regno
);
3812 unsigned char buf
[MAX_REGISTER_SIZE
];
3814 regcache_raw_collect (regcache
, regno
, buf
);
3815 fprintf_unfiltered (gdb_stdlog
, " = ");
3816 for (i
= 0; i
< size
; i
++)
3818 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3820 if (size
<= sizeof (LONGEST
))
3822 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3824 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3825 core_addr_to_string_nz (val
), plongest (val
));
3828 fprintf_unfiltered (gdb_stdlog
, "\n");
3832 target_fetch_registers (struct regcache
*regcache
, int regno
)
3834 struct target_ops
*t
;
3836 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3838 if (t
->to_fetch_registers
!= NULL
)
3840 t
->to_fetch_registers (t
, regcache
, regno
);
3842 debug_print_register ("target_fetch_registers", regcache
, regno
);
3849 target_store_registers (struct regcache
*regcache
, int regno
)
3851 struct target_ops
*t
;
3853 if (!may_write_registers
)
3854 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3856 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3858 if (t
->to_store_registers
!= NULL
)
3860 t
->to_store_registers (t
, regcache
, regno
);
3863 debug_print_register ("target_store_registers", regcache
, regno
);
3873 target_core_of_thread (ptid_t ptid
)
3875 struct target_ops
*t
;
3877 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3879 if (t
->to_core_of_thread
!= NULL
)
3881 int retval
= t
->to_core_of_thread (t
, ptid
);
3884 fprintf_unfiltered (gdb_stdlog
,
3885 "target_core_of_thread (%d) = %d\n",
3886 PIDGET (ptid
), retval
);
3895 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3897 struct target_ops
*t
;
3899 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3901 if (t
->to_verify_memory
!= NULL
)
3903 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3906 fprintf_unfiltered (gdb_stdlog
,
3907 "target_verify_memory (%s, %s) = %d\n",
3908 paddress (target_gdbarch
, memaddr
),
3918 /* The documentation for this function is in its prototype declaration in
3922 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3924 struct target_ops
*t
;
3926 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3927 if (t
->to_insert_mask_watchpoint
!= NULL
)
3931 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
3934 fprintf_unfiltered (gdb_stdlog
, "\
3935 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3936 core_addr_to_string (addr
),
3937 core_addr_to_string (mask
), rw
, ret
);
3945 /* The documentation for this function is in its prototype declaration in
3949 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3951 struct target_ops
*t
;
3953 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3954 if (t
->to_remove_mask_watchpoint
!= NULL
)
3958 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
3961 fprintf_unfiltered (gdb_stdlog
, "\
3962 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3963 core_addr_to_string (addr
),
3964 core_addr_to_string (mask
), rw
, ret
);
3972 /* The documentation for this function is in its prototype declaration
3976 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
3978 struct target_ops
*t
;
3980 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3981 if (t
->to_masked_watch_num_registers
!= NULL
)
3982 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
3987 /* The documentation for this function is in its prototype declaration
3991 target_ranged_break_num_registers (void)
3993 struct target_ops
*t
;
3995 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3996 if (t
->to_ranged_break_num_registers
!= NULL
)
3997 return t
->to_ranged_break_num_registers (t
);
4003 debug_to_prepare_to_store (struct regcache
*regcache
)
4005 debug_target
.to_prepare_to_store (regcache
);
4007 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4011 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4012 int write
, struct mem_attrib
*attrib
,
4013 struct target_ops
*target
)
4017 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4020 fprintf_unfiltered (gdb_stdlog
,
4021 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4022 paddress (target_gdbarch
, memaddr
), len
,
4023 write
? "write" : "read", retval
);
4029 fputs_unfiltered (", bytes =", gdb_stdlog
);
4030 for (i
= 0; i
< retval
; i
++)
4032 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4034 if (targetdebug
< 2 && i
> 0)
4036 fprintf_unfiltered (gdb_stdlog
, " ...");
4039 fprintf_unfiltered (gdb_stdlog
, "\n");
4042 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4046 fputc_unfiltered ('\n', gdb_stdlog
);
4052 debug_to_files_info (struct target_ops
*target
)
4054 debug_target
.to_files_info (target
);
4056 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4060 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
4061 struct bp_target_info
*bp_tgt
)
4065 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
4067 fprintf_unfiltered (gdb_stdlog
,
4068 "target_insert_breakpoint (%s, xxx) = %ld\n",
4069 core_addr_to_string (bp_tgt
->placed_address
),
4070 (unsigned long) retval
);
4075 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
4076 struct bp_target_info
*bp_tgt
)
4080 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
4082 fprintf_unfiltered (gdb_stdlog
,
4083 "target_remove_breakpoint (%s, xxx) = %ld\n",
4084 core_addr_to_string (bp_tgt
->placed_address
),
4085 (unsigned long) retval
);
4090 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
4094 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
4096 fprintf_unfiltered (gdb_stdlog
,
4097 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4098 (unsigned long) type
,
4099 (unsigned long) cnt
,
4100 (unsigned long) from_tty
,
4101 (unsigned long) retval
);
4106 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
4110 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
4112 fprintf_unfiltered (gdb_stdlog
,
4113 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4114 core_addr_to_string (addr
), (unsigned long) len
,
4115 core_addr_to_string (retval
));
4120 debug_to_can_accel_watchpoint_condition (CORE_ADDR addr
, int len
, int rw
,
4121 struct expression
*cond
)
4125 retval
= debug_target
.to_can_accel_watchpoint_condition (addr
, len
,
4128 fprintf_unfiltered (gdb_stdlog
,
4129 "target_can_accel_watchpoint_condition "
4130 "(%s, %d, %d, %s) = %ld\n",
4131 core_addr_to_string (addr
), len
, rw
,
4132 host_address_to_string (cond
), (unsigned long) retval
);
4137 debug_to_stopped_by_watchpoint (void)
4141 retval
= debug_target
.to_stopped_by_watchpoint ();
4143 fprintf_unfiltered (gdb_stdlog
,
4144 "target_stopped_by_watchpoint () = %ld\n",
4145 (unsigned long) retval
);
4150 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4154 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4156 fprintf_unfiltered (gdb_stdlog
,
4157 "target_stopped_data_address ([%s]) = %ld\n",
4158 core_addr_to_string (*addr
),
4159 (unsigned long)retval
);
4164 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4166 CORE_ADDR start
, int length
)
4170 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4173 fprintf_filtered (gdb_stdlog
,
4174 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4175 core_addr_to_string (addr
), core_addr_to_string (start
),
4181 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
4182 struct bp_target_info
*bp_tgt
)
4186 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
4188 fprintf_unfiltered (gdb_stdlog
,
4189 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4190 core_addr_to_string (bp_tgt
->placed_address
),
4191 (unsigned long) retval
);
4196 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
4197 struct bp_target_info
*bp_tgt
)
4201 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
4203 fprintf_unfiltered (gdb_stdlog
,
4204 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4205 core_addr_to_string (bp_tgt
->placed_address
),
4206 (unsigned long) retval
);
4211 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
4212 struct expression
*cond
)
4216 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
, cond
);
4218 fprintf_unfiltered (gdb_stdlog
,
4219 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4220 core_addr_to_string (addr
), len
, type
,
4221 host_address_to_string (cond
), (unsigned long) retval
);
4226 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
4227 struct expression
*cond
)
4231 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
, cond
);
4233 fprintf_unfiltered (gdb_stdlog
,
4234 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4235 core_addr_to_string (addr
), len
, type
,
4236 host_address_to_string (cond
), (unsigned long) retval
);
4241 debug_to_terminal_init (void)
4243 debug_target
.to_terminal_init ();
4245 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4249 debug_to_terminal_inferior (void)
4251 debug_target
.to_terminal_inferior ();
4253 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4257 debug_to_terminal_ours_for_output (void)
4259 debug_target
.to_terminal_ours_for_output ();
4261 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4265 debug_to_terminal_ours (void)
4267 debug_target
.to_terminal_ours ();
4269 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4273 debug_to_terminal_save_ours (void)
4275 debug_target
.to_terminal_save_ours ();
4277 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4281 debug_to_terminal_info (char *arg
, int from_tty
)
4283 debug_target
.to_terminal_info (arg
, from_tty
);
4285 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4290 debug_to_load (char *args
, int from_tty
)
4292 debug_target
.to_load (args
, from_tty
);
4294 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4298 debug_to_post_startup_inferior (ptid_t ptid
)
4300 debug_target
.to_post_startup_inferior (ptid
);
4302 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4307 debug_to_insert_fork_catchpoint (int pid
)
4311 retval
= debug_target
.to_insert_fork_catchpoint (pid
);
4313 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4320 debug_to_remove_fork_catchpoint (int pid
)
4324 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
4326 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4333 debug_to_insert_vfork_catchpoint (int pid
)
4337 retval
= debug_target
.to_insert_vfork_catchpoint (pid
);
4339 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4346 debug_to_remove_vfork_catchpoint (int pid
)
4350 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
4352 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4359 debug_to_insert_exec_catchpoint (int pid
)
4363 retval
= debug_target
.to_insert_exec_catchpoint (pid
);
4365 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4372 debug_to_remove_exec_catchpoint (int pid
)
4376 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
4378 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4385 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
4389 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
4391 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4392 pid
, wait_status
, *exit_status
, has_exited
);
4398 debug_to_can_run (void)
4402 retval
= debug_target
.to_can_run ();
4404 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4409 static struct gdbarch
*
4410 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4412 struct gdbarch
*retval
;
4414 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4416 fprintf_unfiltered (gdb_stdlog
,
4417 "target_thread_architecture (%s) = %s [%s]\n",
4418 target_pid_to_str (ptid
),
4419 host_address_to_string (retval
),
4420 gdbarch_bfd_arch_info (retval
)->printable_name
);
4425 debug_to_stop (ptid_t ptid
)
4427 debug_target
.to_stop (ptid
);
4429 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4430 target_pid_to_str (ptid
));
4434 debug_to_rcmd (char *command
,
4435 struct ui_file
*outbuf
)
4437 debug_target
.to_rcmd (command
, outbuf
);
4438 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4442 debug_to_pid_to_exec_file (int pid
)
4446 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
4448 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4455 setup_target_debug (void)
4457 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4459 current_target
.to_open
= debug_to_open
;
4460 current_target
.to_post_attach
= debug_to_post_attach
;
4461 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4462 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4463 current_target
.to_files_info
= debug_to_files_info
;
4464 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4465 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4466 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4467 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4468 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4469 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4470 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4471 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4472 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4473 current_target
.to_watchpoint_addr_within_range
4474 = debug_to_watchpoint_addr_within_range
;
4475 current_target
.to_region_ok_for_hw_watchpoint
4476 = debug_to_region_ok_for_hw_watchpoint
;
4477 current_target
.to_can_accel_watchpoint_condition
4478 = debug_to_can_accel_watchpoint_condition
;
4479 current_target
.to_terminal_init
= debug_to_terminal_init
;
4480 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4481 current_target
.to_terminal_ours_for_output
4482 = debug_to_terminal_ours_for_output
;
4483 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4484 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4485 current_target
.to_terminal_info
= debug_to_terminal_info
;
4486 current_target
.to_load
= debug_to_load
;
4487 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4488 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4489 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4490 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4491 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4492 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4493 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4494 current_target
.to_has_exited
= debug_to_has_exited
;
4495 current_target
.to_can_run
= debug_to_can_run
;
4496 current_target
.to_stop
= debug_to_stop
;
4497 current_target
.to_rcmd
= debug_to_rcmd
;
4498 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4499 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4503 static char targ_desc
[] =
4504 "Names of targets and files being debugged.\nShows the entire \
4505 stack of targets currently in use (including the exec-file,\n\
4506 core-file, and process, if any), as well as the symbol file name.";
4509 do_monitor_command (char *cmd
,
4512 if ((current_target
.to_rcmd
4513 == (void (*) (char *, struct ui_file
*)) tcomplain
)
4514 || (current_target
.to_rcmd
== debug_to_rcmd
4515 && (debug_target
.to_rcmd
4516 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
4517 error (_("\"monitor\" command not supported by this target."));
4518 target_rcmd (cmd
, gdb_stdtarg
);
4521 /* Print the name of each layers of our target stack. */
4524 maintenance_print_target_stack (char *cmd
, int from_tty
)
4526 struct target_ops
*t
;
4528 printf_filtered (_("The current target stack is:\n"));
4530 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4532 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4536 /* Controls if async mode is permitted. */
4537 int target_async_permitted
= 0;
4539 /* The set command writes to this variable. If the inferior is
4540 executing, linux_nat_async_permitted is *not* updated. */
4541 static int target_async_permitted_1
= 0;
4544 set_maintenance_target_async_permitted (char *args
, int from_tty
,
4545 struct cmd_list_element
*c
)
4547 if (have_live_inferiors ())
4549 target_async_permitted_1
= target_async_permitted
;
4550 error (_("Cannot change this setting while the inferior is running."));
4553 target_async_permitted
= target_async_permitted_1
;
4557 show_maintenance_target_async_permitted (struct ui_file
*file
, int from_tty
,
4558 struct cmd_list_element
*c
,
4561 fprintf_filtered (file
,
4562 _("Controlling the inferior in "
4563 "asynchronous mode is %s.\n"), value
);
4566 /* Temporary copies of permission settings. */
4568 static int may_write_registers_1
= 1;
4569 static int may_write_memory_1
= 1;
4570 static int may_insert_breakpoints_1
= 1;
4571 static int may_insert_tracepoints_1
= 1;
4572 static int may_insert_fast_tracepoints_1
= 1;
4573 static int may_stop_1
= 1;
4575 /* Make the user-set values match the real values again. */
4578 update_target_permissions (void)
4580 may_write_registers_1
= may_write_registers
;
4581 may_write_memory_1
= may_write_memory
;
4582 may_insert_breakpoints_1
= may_insert_breakpoints
;
4583 may_insert_tracepoints_1
= may_insert_tracepoints
;
4584 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4585 may_stop_1
= may_stop
;
4588 /* The one function handles (most of) the permission flags in the same
4592 set_target_permissions (char *args
, int from_tty
,
4593 struct cmd_list_element
*c
)
4595 if (target_has_execution
)
4597 update_target_permissions ();
4598 error (_("Cannot change this setting while the inferior is running."));
4601 /* Make the real values match the user-changed values. */
4602 may_write_registers
= may_write_registers_1
;
4603 may_insert_breakpoints
= may_insert_breakpoints_1
;
4604 may_insert_tracepoints
= may_insert_tracepoints_1
;
4605 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4606 may_stop
= may_stop_1
;
4607 update_observer_mode ();
4610 /* Set memory write permission independently of observer mode. */
4613 set_write_memory_permission (char *args
, int from_tty
,
4614 struct cmd_list_element
*c
)
4616 /* Make the real values match the user-changed values. */
4617 may_write_memory
= may_write_memory_1
;
4618 update_observer_mode ();
4623 initialize_targets (void)
4625 init_dummy_target ();
4626 push_target (&dummy_target
);
4628 add_info ("target", target_info
, targ_desc
);
4629 add_info ("files", target_info
, targ_desc
);
4631 add_setshow_zinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
4632 Set target debugging."), _("\
4633 Show target debugging."), _("\
4634 When non-zero, target debugging is enabled. Higher numbers are more\n\
4635 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4639 &setdebuglist
, &showdebuglist
);
4641 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
4642 &trust_readonly
, _("\
4643 Set mode for reading from readonly sections."), _("\
4644 Show mode for reading from readonly sections."), _("\
4645 When this mode is on, memory reads from readonly sections (such as .text)\n\
4646 will be read from the object file instead of from the target. This will\n\
4647 result in significant performance improvement for remote targets."),
4649 show_trust_readonly
,
4650 &setlist
, &showlist
);
4652 add_com ("monitor", class_obscure
, do_monitor_command
,
4653 _("Send a command to the remote monitor (remote targets only)."));
4655 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
4656 _("Print the name of each layer of the internal target stack."),
4657 &maintenanceprintlist
);
4659 add_setshow_boolean_cmd ("target-async", no_class
,
4660 &target_async_permitted_1
, _("\
4661 Set whether gdb controls the inferior in asynchronous mode."), _("\
4662 Show whether gdb controls the inferior in asynchronous mode."), _("\
4663 Tells gdb whether to control the inferior in asynchronous mode."),
4664 set_maintenance_target_async_permitted
,
4665 show_maintenance_target_async_permitted
,
4669 add_setshow_boolean_cmd ("stack-cache", class_support
,
4670 &stack_cache_enabled_p_1
, _("\
4671 Set cache use for stack access."), _("\
4672 Show cache use for stack access."), _("\
4673 When on, use the data cache for all stack access, regardless of any\n\
4674 configured memory regions. This improves remote performance significantly.\n\
4675 By default, caching for stack access is on."),
4676 set_stack_cache_enabled_p
,
4677 show_stack_cache_enabled_p
,
4678 &setlist
, &showlist
);
4680 add_setshow_boolean_cmd ("may-write-registers", class_support
,
4681 &may_write_registers_1
, _("\
4682 Set permission to write into registers."), _("\
4683 Show permission to write into registers."), _("\
4684 When this permission is on, GDB may write into the target's registers.\n\
4685 Otherwise, any sort of write attempt will result in an error."),
4686 set_target_permissions
, NULL
,
4687 &setlist
, &showlist
);
4689 add_setshow_boolean_cmd ("may-write-memory", class_support
,
4690 &may_write_memory_1
, _("\
4691 Set permission to write into target memory."), _("\
4692 Show permission to write into target memory."), _("\
4693 When this permission is on, GDB may write into the target's memory.\n\
4694 Otherwise, any sort of write attempt will result in an error."),
4695 set_write_memory_permission
, NULL
,
4696 &setlist
, &showlist
);
4698 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
4699 &may_insert_breakpoints_1
, _("\
4700 Set permission to insert breakpoints in the target."), _("\
4701 Show permission to insert breakpoints in the target."), _("\
4702 When this permission is on, GDB may insert breakpoints in the program.\n\
4703 Otherwise, any sort of insertion attempt will result in an error."),
4704 set_target_permissions
, NULL
,
4705 &setlist
, &showlist
);
4707 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
4708 &may_insert_tracepoints_1
, _("\
4709 Set permission to insert tracepoints in the target."), _("\
4710 Show permission to insert tracepoints in the target."), _("\
4711 When this permission is on, GDB may insert tracepoints in the program.\n\
4712 Otherwise, any sort of insertion attempt will result in an error."),
4713 set_target_permissions
, NULL
,
4714 &setlist
, &showlist
);
4716 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
4717 &may_insert_fast_tracepoints_1
, _("\
4718 Set permission to insert fast tracepoints in the target."), _("\
4719 Show permission to insert fast tracepoints in the target."), _("\
4720 When this permission is on, GDB may insert fast tracepoints.\n\
4721 Otherwise, any sort of insertion attempt will result in an error."),
4722 set_target_permissions
, NULL
,
4723 &setlist
, &showlist
);
4725 add_setshow_boolean_cmd ("may-interrupt", class_support
,
4727 Set permission to interrupt or signal the target."), _("\
4728 Show permission to interrupt or signal the target."), _("\
4729 When this permission is on, GDB may interrupt/stop the target's execution.\n\
4730 Otherwise, any attempt to interrupt or stop will be ignored."),
4731 set_target_permissions
, NULL
,
4732 &setlist
, &showlist
);
4735 target_dcache
= dcache_init ();