1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2013 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/>. */
26 #include "target-dcache.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"
48 static void target_info (char *, int);
50 static void default_terminal_info (const char *, int);
52 static int default_watchpoint_addr_within_range (struct target_ops
*,
53 CORE_ADDR
, CORE_ADDR
, int);
55 static int default_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
57 static void tcomplain (void) ATTRIBUTE_NORETURN
;
59 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
61 static int return_zero (void);
63 static int return_one (void);
65 static int return_minus_one (void);
67 void target_ignore (void);
69 static void target_command (char *, int);
71 static struct target_ops
*find_default_run_target (char *);
73 static LONGEST
default_xfer_partial (struct target_ops
*ops
,
74 enum target_object object
,
75 const char *annex
, gdb_byte
*readbuf
,
76 const gdb_byte
*writebuf
,
77 ULONGEST offset
, LONGEST len
);
79 static LONGEST
current_xfer_partial (struct target_ops
*ops
,
80 enum target_object object
,
81 const char *annex
, gdb_byte
*readbuf
,
82 const gdb_byte
*writebuf
,
83 ULONGEST offset
, LONGEST len
);
85 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
88 static void init_dummy_target (void);
90 static struct target_ops debug_target
;
92 static void debug_to_open (char *, int);
94 static void debug_to_prepare_to_store (struct regcache
*);
96 static void debug_to_files_info (struct target_ops
*);
98 static int debug_to_insert_breakpoint (struct gdbarch
*,
99 struct bp_target_info
*);
101 static int debug_to_remove_breakpoint (struct gdbarch
*,
102 struct bp_target_info
*);
104 static int debug_to_can_use_hw_breakpoint (int, int, int);
106 static int debug_to_insert_hw_breakpoint (struct gdbarch
*,
107 struct bp_target_info
*);
109 static int debug_to_remove_hw_breakpoint (struct gdbarch
*,
110 struct bp_target_info
*);
112 static int debug_to_insert_watchpoint (CORE_ADDR
, int, int,
113 struct expression
*);
115 static int debug_to_remove_watchpoint (CORE_ADDR
, int, int,
116 struct expression
*);
118 static int debug_to_stopped_by_watchpoint (void);
120 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
122 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
123 CORE_ADDR
, CORE_ADDR
, int);
125 static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
127 static int debug_to_can_accel_watchpoint_condition (CORE_ADDR
, int, int,
128 struct expression
*);
130 static void debug_to_terminal_init (void);
132 static void debug_to_terminal_inferior (void);
134 static void debug_to_terminal_ours_for_output (void);
136 static void debug_to_terminal_save_ours (void);
138 static void debug_to_terminal_ours (void);
140 static void debug_to_load (char *, int);
142 static int debug_to_can_run (void);
144 static void debug_to_stop (ptid_t
);
146 /* Pointer to array of target architecture structures; the size of the
147 array; the current index into the array; the allocated size of the
149 struct target_ops
**target_structs
;
150 unsigned target_struct_size
;
151 unsigned target_struct_allocsize
;
152 #define DEFAULT_ALLOCSIZE 10
154 /* The initial current target, so that there is always a semi-valid
157 static struct target_ops dummy_target
;
159 /* Top of target stack. */
161 static struct target_ops
*target_stack
;
163 /* The target structure we are currently using to talk to a process
164 or file or whatever "inferior" we have. */
166 struct target_ops current_target
;
168 /* Command list for target. */
170 static struct cmd_list_element
*targetlist
= NULL
;
172 /* Nonzero if we should trust readonly sections from the
173 executable when reading memory. */
175 static int trust_readonly
= 0;
177 /* Nonzero if we should show true memory content including
178 memory breakpoint inserted by gdb. */
180 static int show_memory_breakpoints
= 0;
182 /* These globals control whether GDB attempts to perform these
183 operations; they are useful for targets that need to prevent
184 inadvertant disruption, such as in non-stop mode. */
186 int may_write_registers
= 1;
188 int may_write_memory
= 1;
190 int may_insert_breakpoints
= 1;
192 int may_insert_tracepoints
= 1;
194 int may_insert_fast_tracepoints
= 1;
198 /* Non-zero if we want to see trace of target level stuff. */
200 static unsigned int targetdebug
= 0;
202 show_targetdebug (struct ui_file
*file
, int from_tty
,
203 struct cmd_list_element
*c
, const char *value
)
205 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
208 static void setup_target_debug (void);
210 /* The user just typed 'target' without the name of a target. */
213 target_command (char *arg
, int from_tty
)
215 fputs_filtered ("Argument required (target name). Try `help target'\n",
219 /* Default target_has_* methods for process_stratum targets. */
222 default_child_has_all_memory (struct target_ops
*ops
)
224 /* If no inferior selected, then we can't read memory here. */
225 if (ptid_equal (inferior_ptid
, null_ptid
))
232 default_child_has_memory (struct target_ops
*ops
)
234 /* If no inferior selected, then we can't read memory here. */
235 if (ptid_equal (inferior_ptid
, null_ptid
))
242 default_child_has_stack (struct target_ops
*ops
)
244 /* If no inferior selected, there's no stack. */
245 if (ptid_equal (inferior_ptid
, null_ptid
))
252 default_child_has_registers (struct target_ops
*ops
)
254 /* Can't read registers from no inferior. */
255 if (ptid_equal (inferior_ptid
, null_ptid
))
262 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
264 /* If there's no thread selected, then we can't make it run through
266 if (ptid_equal (the_ptid
, null_ptid
))
274 target_has_all_memory_1 (void)
276 struct target_ops
*t
;
278 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
279 if (t
->to_has_all_memory (t
))
286 target_has_memory_1 (void)
288 struct target_ops
*t
;
290 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
291 if (t
->to_has_memory (t
))
298 target_has_stack_1 (void)
300 struct target_ops
*t
;
302 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
303 if (t
->to_has_stack (t
))
310 target_has_registers_1 (void)
312 struct target_ops
*t
;
314 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
315 if (t
->to_has_registers (t
))
322 target_has_execution_1 (ptid_t the_ptid
)
324 struct target_ops
*t
;
326 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
327 if (t
->to_has_execution (t
, the_ptid
))
334 target_has_execution_current (void)
336 return target_has_execution_1 (inferior_ptid
);
339 /* Complete initialization of T. This ensures that various fields in
340 T are set, if needed by the target implementation. */
343 complete_target_initialization (struct target_ops
*t
)
345 /* Provide default values for all "must have" methods. */
346 if (t
->to_xfer_partial
== NULL
)
347 t
->to_xfer_partial
= default_xfer_partial
;
349 if (t
->to_has_all_memory
== NULL
)
350 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
352 if (t
->to_has_memory
== NULL
)
353 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
355 if (t
->to_has_stack
== NULL
)
356 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
358 if (t
->to_has_registers
== NULL
)
359 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
361 if (t
->to_has_execution
== NULL
)
362 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
365 /* Add possible target architecture T to the list and add a new
366 command 'target T->to_shortname'. Set COMPLETER as the command's
367 completer if not NULL. */
370 add_target_with_completer (struct target_ops
*t
,
371 completer_ftype
*completer
)
373 struct cmd_list_element
*c
;
375 complete_target_initialization (t
);
379 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
380 target_structs
= (struct target_ops
**) xmalloc
381 (target_struct_allocsize
* sizeof (*target_structs
));
383 if (target_struct_size
>= target_struct_allocsize
)
385 target_struct_allocsize
*= 2;
386 target_structs
= (struct target_ops
**)
387 xrealloc ((char *) target_structs
,
388 target_struct_allocsize
* sizeof (*target_structs
));
390 target_structs
[target_struct_size
++] = t
;
392 if (targetlist
== NULL
)
393 add_prefix_cmd ("target", class_run
, target_command
, _("\
394 Connect to a target machine or process.\n\
395 The first argument is the type or protocol of the target machine.\n\
396 Remaining arguments are interpreted by the target protocol. For more\n\
397 information on the arguments for a particular protocol, type\n\
398 `help target ' followed by the protocol name."),
399 &targetlist
, "target ", 0, &cmdlist
);
400 c
= add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
,
402 if (completer
!= NULL
)
403 set_cmd_completer (c
, completer
);
406 /* Add a possible target architecture to the list. */
409 add_target (struct target_ops
*t
)
411 add_target_with_completer (t
, NULL
);
417 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
419 struct cmd_list_element
*c
;
422 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
424 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
425 alt
= xstrprintf ("target %s", t
->to_shortname
);
426 deprecate_cmd (c
, alt
);
439 struct target_ops
*t
;
441 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
442 if (t
->to_kill
!= NULL
)
445 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
455 target_load (char *arg
, int from_tty
)
457 target_dcache_invalidate ();
458 (*current_target
.to_load
) (arg
, from_tty
);
462 target_create_inferior (char *exec_file
, char *args
,
463 char **env
, int from_tty
)
465 struct target_ops
*t
;
467 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
469 if (t
->to_create_inferior
!= NULL
)
471 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
473 fprintf_unfiltered (gdb_stdlog
,
474 "target_create_inferior (%s, %s, xxx, %d)\n",
475 exec_file
, args
, from_tty
);
480 internal_error (__FILE__
, __LINE__
,
481 _("could not find a target to create inferior"));
485 target_terminal_inferior (void)
487 /* A background resume (``run&'') should leave GDB in control of the
488 terminal. Use target_can_async_p, not target_is_async_p, since at
489 this point the target is not async yet. However, if sync_execution
490 is not set, we know it will become async prior to resume. */
491 if (target_can_async_p () && !sync_execution
)
494 /* If GDB is resuming the inferior in the foreground, install
495 inferior's terminal modes. */
496 (*current_target
.to_terminal_inferior
) ();
500 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
501 struct target_ops
*t
)
503 errno
= EIO
; /* Can't read/write this location. */
504 return 0; /* No bytes handled. */
510 error (_("You can't do that when your target is `%s'"),
511 current_target
.to_shortname
);
517 error (_("You can't do that without a process to debug."));
521 default_terminal_info (const char *args
, int from_tty
)
523 printf_unfiltered (_("No saved terminal information.\n"));
526 /* A default implementation for the to_get_ada_task_ptid target method.
528 This function builds the PTID by using both LWP and TID as part of
529 the PTID lwp and tid elements. The pid used is the pid of the
533 default_get_ada_task_ptid (long lwp
, long tid
)
535 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
538 static enum exec_direction_kind
539 default_execution_direction (void)
541 if (!target_can_execute_reverse
)
543 else if (!target_can_async_p ())
546 gdb_assert_not_reached ("\
547 to_execution_direction must be implemented for reverse async");
550 /* Go through the target stack from top to bottom, copying over zero
551 entries in current_target, then filling in still empty entries. In
552 effect, we are doing class inheritance through the pushed target
555 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
556 is currently implemented, is that it discards any knowledge of
557 which target an inherited method originally belonged to.
558 Consequently, new new target methods should instead explicitly and
559 locally search the target stack for the target that can handle the
563 update_current_target (void)
565 struct target_ops
*t
;
567 /* First, reset current's contents. */
568 memset (¤t_target
, 0, sizeof (current_target
));
570 #define INHERIT(FIELD, TARGET) \
571 if (!current_target.FIELD) \
572 current_target.FIELD = (TARGET)->FIELD
574 for (t
= target_stack
; t
; t
= t
->beneath
)
576 INHERIT (to_shortname
, t
);
577 INHERIT (to_longname
, t
);
579 /* Do not inherit to_open. */
580 /* Do not inherit to_close. */
581 /* Do not inherit to_attach. */
582 INHERIT (to_post_attach
, t
);
583 INHERIT (to_attach_no_wait
, t
);
584 /* Do not inherit to_detach. */
585 /* Do not inherit to_disconnect. */
586 /* Do not inherit to_resume. */
587 /* Do not inherit to_wait. */
588 /* Do not inherit to_fetch_registers. */
589 /* Do not inherit to_store_registers. */
590 INHERIT (to_prepare_to_store
, t
);
591 INHERIT (deprecated_xfer_memory
, t
);
592 INHERIT (to_files_info
, t
);
593 INHERIT (to_insert_breakpoint
, t
);
594 INHERIT (to_remove_breakpoint
, t
);
595 INHERIT (to_can_use_hw_breakpoint
, t
);
596 INHERIT (to_insert_hw_breakpoint
, t
);
597 INHERIT (to_remove_hw_breakpoint
, t
);
598 /* Do not inherit to_ranged_break_num_registers. */
599 INHERIT (to_insert_watchpoint
, t
);
600 INHERIT (to_remove_watchpoint
, t
);
601 /* Do not inherit to_insert_mask_watchpoint. */
602 /* Do not inherit to_remove_mask_watchpoint. */
603 INHERIT (to_stopped_data_address
, t
);
604 INHERIT (to_have_steppable_watchpoint
, t
);
605 INHERIT (to_have_continuable_watchpoint
, t
);
606 INHERIT (to_stopped_by_watchpoint
, t
);
607 INHERIT (to_watchpoint_addr_within_range
, t
);
608 INHERIT (to_region_ok_for_hw_watchpoint
, t
);
609 INHERIT (to_can_accel_watchpoint_condition
, t
);
610 /* Do not inherit to_masked_watch_num_registers. */
611 INHERIT (to_terminal_init
, t
);
612 INHERIT (to_terminal_inferior
, t
);
613 INHERIT (to_terminal_ours_for_output
, t
);
614 INHERIT (to_terminal_ours
, t
);
615 INHERIT (to_terminal_save_ours
, t
);
616 INHERIT (to_terminal_info
, t
);
617 /* Do not inherit to_kill. */
618 INHERIT (to_load
, t
);
619 /* Do no inherit to_create_inferior. */
620 INHERIT (to_post_startup_inferior
, t
);
621 INHERIT (to_insert_fork_catchpoint
, t
);
622 INHERIT (to_remove_fork_catchpoint
, t
);
623 INHERIT (to_insert_vfork_catchpoint
, t
);
624 INHERIT (to_remove_vfork_catchpoint
, t
);
625 /* Do not inherit to_follow_fork. */
626 INHERIT (to_insert_exec_catchpoint
, t
);
627 INHERIT (to_remove_exec_catchpoint
, t
);
628 INHERIT (to_set_syscall_catchpoint
, t
);
629 INHERIT (to_has_exited
, t
);
630 /* Do not inherit to_mourn_inferior. */
631 INHERIT (to_can_run
, t
);
632 /* Do not inherit to_pass_signals. */
633 /* Do not inherit to_program_signals. */
634 /* Do not inherit to_thread_alive. */
635 /* Do not inherit to_find_new_threads. */
636 /* Do not inherit to_pid_to_str. */
637 INHERIT (to_extra_thread_info
, t
);
638 INHERIT (to_thread_name
, t
);
639 INHERIT (to_stop
, t
);
640 /* Do not inherit to_xfer_partial. */
641 INHERIT (to_rcmd
, t
);
642 INHERIT (to_pid_to_exec_file
, t
);
643 INHERIT (to_log_command
, t
);
644 INHERIT (to_stratum
, t
);
645 /* Do not inherit to_has_all_memory. */
646 /* Do not inherit to_has_memory. */
647 /* Do not inherit to_has_stack. */
648 /* Do not inherit to_has_registers. */
649 /* Do not inherit to_has_execution. */
650 INHERIT (to_has_thread_control
, t
);
651 INHERIT (to_can_async_p
, t
);
652 INHERIT (to_is_async_p
, t
);
653 INHERIT (to_async
, t
);
654 INHERIT (to_find_memory_regions
, t
);
655 INHERIT (to_make_corefile_notes
, t
);
656 INHERIT (to_get_bookmark
, t
);
657 INHERIT (to_goto_bookmark
, t
);
658 /* Do not inherit to_get_thread_local_address. */
659 INHERIT (to_can_execute_reverse
, t
);
660 INHERIT (to_execution_direction
, t
);
661 INHERIT (to_thread_architecture
, t
);
662 /* Do not inherit to_read_description. */
663 INHERIT (to_get_ada_task_ptid
, t
);
664 /* Do not inherit to_search_memory. */
665 INHERIT (to_supports_multi_process
, t
);
666 INHERIT (to_supports_enable_disable_tracepoint
, t
);
667 INHERIT (to_supports_string_tracing
, t
);
668 INHERIT (to_trace_init
, t
);
669 INHERIT (to_download_tracepoint
, t
);
670 INHERIT (to_can_download_tracepoint
, t
);
671 INHERIT (to_download_trace_state_variable
, t
);
672 INHERIT (to_enable_tracepoint
, t
);
673 INHERIT (to_disable_tracepoint
, t
);
674 INHERIT (to_trace_set_readonly_regions
, t
);
675 INHERIT (to_trace_start
, t
);
676 INHERIT (to_get_trace_status
, t
);
677 INHERIT (to_get_tracepoint_status
, t
);
678 INHERIT (to_trace_stop
, t
);
679 INHERIT (to_trace_find
, t
);
680 INHERIT (to_get_trace_state_variable_value
, t
);
681 INHERIT (to_save_trace_data
, t
);
682 INHERIT (to_upload_tracepoints
, t
);
683 INHERIT (to_upload_trace_state_variables
, t
);
684 INHERIT (to_get_raw_trace_data
, t
);
685 INHERIT (to_get_min_fast_tracepoint_insn_len
, t
);
686 INHERIT (to_set_disconnected_tracing
, t
);
687 INHERIT (to_set_circular_trace_buffer
, t
);
688 INHERIT (to_set_trace_buffer_size
, t
);
689 INHERIT (to_set_trace_notes
, t
);
690 INHERIT (to_get_tib_address
, t
);
691 INHERIT (to_set_permissions
, t
);
692 INHERIT (to_static_tracepoint_marker_at
, t
);
693 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
694 INHERIT (to_traceframe_info
, t
);
695 INHERIT (to_use_agent
, t
);
696 INHERIT (to_can_use_agent
, t
);
697 INHERIT (to_augmented_libraries_svr4_read
, t
);
698 INHERIT (to_magic
, t
);
699 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
700 INHERIT (to_can_run_breakpoint_commands
, t
);
701 /* Do not inherit to_memory_map. */
702 /* Do not inherit to_flash_erase. */
703 /* Do not inherit to_flash_done. */
707 /* Clean up a target struct so it no longer has any zero pointers in
708 it. Some entries are defaulted to a method that print an error,
709 others are hard-wired to a standard recursive default. */
711 #define de_fault(field, value) \
712 if (!current_target.field) \
713 current_target.field = value
716 (void (*) (char *, int))
721 de_fault (to_post_attach
,
724 de_fault (to_prepare_to_store
,
725 (void (*) (struct regcache
*))
727 de_fault (deprecated_xfer_memory
,
728 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
729 struct mem_attrib
*, struct target_ops
*))
731 de_fault (to_files_info
,
732 (void (*) (struct target_ops
*))
734 de_fault (to_insert_breakpoint
,
735 memory_insert_breakpoint
);
736 de_fault (to_remove_breakpoint
,
737 memory_remove_breakpoint
);
738 de_fault (to_can_use_hw_breakpoint
,
739 (int (*) (int, int, int))
741 de_fault (to_insert_hw_breakpoint
,
742 (int (*) (struct gdbarch
*, struct bp_target_info
*))
744 de_fault (to_remove_hw_breakpoint
,
745 (int (*) (struct gdbarch
*, struct bp_target_info
*))
747 de_fault (to_insert_watchpoint
,
748 (int (*) (CORE_ADDR
, int, int, struct expression
*))
750 de_fault (to_remove_watchpoint
,
751 (int (*) (CORE_ADDR
, int, int, struct expression
*))
753 de_fault (to_stopped_by_watchpoint
,
756 de_fault (to_stopped_data_address
,
757 (int (*) (struct target_ops
*, CORE_ADDR
*))
759 de_fault (to_watchpoint_addr_within_range
,
760 default_watchpoint_addr_within_range
);
761 de_fault (to_region_ok_for_hw_watchpoint
,
762 default_region_ok_for_hw_watchpoint
);
763 de_fault (to_can_accel_watchpoint_condition
,
764 (int (*) (CORE_ADDR
, int, int, struct expression
*))
766 de_fault (to_terminal_init
,
769 de_fault (to_terminal_inferior
,
772 de_fault (to_terminal_ours_for_output
,
775 de_fault (to_terminal_ours
,
778 de_fault (to_terminal_save_ours
,
781 de_fault (to_terminal_info
,
782 default_terminal_info
);
784 (void (*) (char *, int))
786 de_fault (to_post_startup_inferior
,
789 de_fault (to_insert_fork_catchpoint
,
792 de_fault (to_remove_fork_catchpoint
,
795 de_fault (to_insert_vfork_catchpoint
,
798 de_fault (to_remove_vfork_catchpoint
,
801 de_fault (to_insert_exec_catchpoint
,
804 de_fault (to_remove_exec_catchpoint
,
807 de_fault (to_set_syscall_catchpoint
,
808 (int (*) (int, int, int, int, int *))
810 de_fault (to_has_exited
,
811 (int (*) (int, int, int *))
813 de_fault (to_can_run
,
815 de_fault (to_extra_thread_info
,
816 (char *(*) (struct thread_info
*))
818 de_fault (to_thread_name
,
819 (char *(*) (struct thread_info
*))
824 current_target
.to_xfer_partial
= current_xfer_partial
;
826 (void (*) (char *, struct ui_file
*))
828 de_fault (to_pid_to_exec_file
,
832 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
834 de_fault (to_thread_architecture
,
835 default_thread_architecture
);
836 current_target
.to_read_description
= NULL
;
837 de_fault (to_get_ada_task_ptid
,
838 (ptid_t (*) (long, long))
839 default_get_ada_task_ptid
);
840 de_fault (to_supports_multi_process
,
843 de_fault (to_supports_enable_disable_tracepoint
,
846 de_fault (to_supports_string_tracing
,
849 de_fault (to_trace_init
,
852 de_fault (to_download_tracepoint
,
853 (void (*) (struct bp_location
*))
855 de_fault (to_can_download_tracepoint
,
858 de_fault (to_download_trace_state_variable
,
859 (void (*) (struct trace_state_variable
*))
861 de_fault (to_enable_tracepoint
,
862 (void (*) (struct bp_location
*))
864 de_fault (to_disable_tracepoint
,
865 (void (*) (struct bp_location
*))
867 de_fault (to_trace_set_readonly_regions
,
870 de_fault (to_trace_start
,
873 de_fault (to_get_trace_status
,
874 (int (*) (struct trace_status
*))
876 de_fault (to_get_tracepoint_status
,
877 (void (*) (struct breakpoint
*, struct uploaded_tp
*))
879 de_fault (to_trace_stop
,
882 de_fault (to_trace_find
,
883 (int (*) (enum trace_find_type
, int, CORE_ADDR
, CORE_ADDR
, int *))
885 de_fault (to_get_trace_state_variable_value
,
886 (int (*) (int, LONGEST
*))
888 de_fault (to_save_trace_data
,
889 (int (*) (const char *))
891 de_fault (to_upload_tracepoints
,
892 (int (*) (struct uploaded_tp
**))
894 de_fault (to_upload_trace_state_variables
,
895 (int (*) (struct uploaded_tsv
**))
897 de_fault (to_get_raw_trace_data
,
898 (LONGEST (*) (gdb_byte
*, ULONGEST
, LONGEST
))
900 de_fault (to_get_min_fast_tracepoint_insn_len
,
903 de_fault (to_set_disconnected_tracing
,
906 de_fault (to_set_circular_trace_buffer
,
909 de_fault (to_set_trace_buffer_size
,
912 de_fault (to_set_trace_notes
,
913 (int (*) (const char *, const char *, const char *))
915 de_fault (to_get_tib_address
,
916 (int (*) (ptid_t
, CORE_ADDR
*))
918 de_fault (to_set_permissions
,
921 de_fault (to_static_tracepoint_marker_at
,
922 (int (*) (CORE_ADDR
, struct static_tracepoint_marker
*))
924 de_fault (to_static_tracepoint_markers_by_strid
,
925 (VEC(static_tracepoint_marker_p
) * (*) (const char *))
927 de_fault (to_traceframe_info
,
928 (struct traceframe_info
* (*) (void))
930 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
933 de_fault (to_can_run_breakpoint_commands
,
936 de_fault (to_use_agent
,
939 de_fault (to_can_use_agent
,
942 de_fault (to_augmented_libraries_svr4_read
,
945 de_fault (to_execution_direction
, default_execution_direction
);
949 /* Finally, position the target-stack beneath the squashed
950 "current_target". That way code looking for a non-inherited
951 target method can quickly and simply find it. */
952 current_target
.beneath
= target_stack
;
955 setup_target_debug ();
958 /* Push a new target type into the stack of the existing target accessors,
959 possibly superseding some of the existing accessors.
961 Rather than allow an empty stack, we always have the dummy target at
962 the bottom stratum, so we can call the function vectors without
966 push_target (struct target_ops
*t
)
968 struct target_ops
**cur
;
970 /* Check magic number. If wrong, it probably means someone changed
971 the struct definition, but not all the places that initialize one. */
972 if (t
->to_magic
!= OPS_MAGIC
)
974 fprintf_unfiltered (gdb_stderr
,
975 "Magic number of %s target struct wrong\n",
977 internal_error (__FILE__
, __LINE__
,
978 _("failed internal consistency check"));
981 /* Find the proper stratum to install this target in. */
982 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
984 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
988 /* If there's already targets at this stratum, remove them. */
989 /* FIXME: cagney/2003-10-15: I think this should be popping all
990 targets to CUR, and not just those at this stratum level. */
991 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
993 /* There's already something at this stratum level. Close it,
994 and un-hook it from the stack. */
995 struct target_ops
*tmp
= (*cur
);
997 (*cur
) = (*cur
)->beneath
;
1002 /* We have removed all targets in our stratum, now add the new one. */
1003 t
->beneath
= (*cur
);
1006 update_current_target ();
1009 /* Remove a target_ops vector from the stack, wherever it may be.
1010 Return how many times it was removed (0 or 1). */
1013 unpush_target (struct target_ops
*t
)
1015 struct target_ops
**cur
;
1016 struct target_ops
*tmp
;
1018 if (t
->to_stratum
== dummy_stratum
)
1019 internal_error (__FILE__
, __LINE__
,
1020 _("Attempt to unpush the dummy target"));
1022 /* Look for the specified target. Note that we assume that a target
1023 can only occur once in the target stack. */
1025 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1031 /* If we don't find target_ops, quit. Only open targets should be
1036 /* Unchain the target. */
1038 (*cur
) = (*cur
)->beneath
;
1039 tmp
->beneath
= NULL
;
1041 update_current_target ();
1043 /* Finally close the target. Note we do this after unchaining, so
1044 any target method calls from within the target_close
1045 implementation don't end up in T anymore. */
1052 pop_all_targets_above (enum strata above_stratum
)
1054 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
1056 if (!unpush_target (target_stack
))
1058 fprintf_unfiltered (gdb_stderr
,
1059 "pop_all_targets couldn't find target %s\n",
1060 target_stack
->to_shortname
);
1061 internal_error (__FILE__
, __LINE__
,
1062 _("failed internal consistency check"));
1069 pop_all_targets (void)
1071 pop_all_targets_above (dummy_stratum
);
1074 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
1077 target_is_pushed (struct target_ops
*t
)
1079 struct target_ops
**cur
;
1081 /* Check magic number. If wrong, it probably means someone changed
1082 the struct definition, but not all the places that initialize one. */
1083 if (t
->to_magic
!= OPS_MAGIC
)
1085 fprintf_unfiltered (gdb_stderr
,
1086 "Magic number of %s target struct wrong\n",
1088 internal_error (__FILE__
, __LINE__
,
1089 _("failed internal consistency check"));
1092 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1099 /* Using the objfile specified in OBJFILE, find the address for the
1100 current thread's thread-local storage with offset OFFSET. */
1102 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1104 volatile CORE_ADDR addr
= 0;
1105 struct target_ops
*target
;
1107 for (target
= current_target
.beneath
;
1109 target
= target
->beneath
)
1111 if (target
->to_get_thread_local_address
!= NULL
)
1116 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
1118 ptid_t ptid
= inferior_ptid
;
1119 volatile struct gdb_exception ex
;
1121 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1125 /* Fetch the load module address for this objfile. */
1126 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1128 /* If it's 0, throw the appropriate exception. */
1130 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1131 _("TLS load module not found"));
1133 addr
= target
->to_get_thread_local_address (target
, ptid
,
1136 /* If an error occurred, print TLS related messages here. Otherwise,
1137 throw the error to some higher catcher. */
1140 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1144 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1145 error (_("Cannot find thread-local variables "
1146 "in this thread library."));
1148 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1149 if (objfile_is_library
)
1150 error (_("Cannot find shared library `%s' in dynamic"
1151 " linker's load module list"), objfile_name (objfile
));
1153 error (_("Cannot find executable file `%s' in dynamic"
1154 " linker's load module list"), objfile_name (objfile
));
1156 case TLS_NOT_ALLOCATED_YET_ERROR
:
1157 if (objfile_is_library
)
1158 error (_("The inferior has not yet allocated storage for"
1159 " thread-local variables in\n"
1160 "the shared library `%s'\n"
1162 objfile_name (objfile
), target_pid_to_str (ptid
));
1164 error (_("The inferior has not yet allocated storage for"
1165 " thread-local variables in\n"
1166 "the executable `%s'\n"
1168 objfile_name (objfile
), target_pid_to_str (ptid
));
1170 case TLS_GENERIC_ERROR
:
1171 if (objfile_is_library
)
1172 error (_("Cannot find thread-local storage for %s, "
1173 "shared library %s:\n%s"),
1174 target_pid_to_str (ptid
),
1175 objfile_name (objfile
), ex
.message
);
1177 error (_("Cannot find thread-local storage for %s, "
1178 "executable file %s:\n%s"),
1179 target_pid_to_str (ptid
),
1180 objfile_name (objfile
), ex
.message
);
1183 throw_exception (ex
);
1188 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1189 TLS is an ABI-specific thing. But we don't do that yet. */
1191 error (_("Cannot find thread-local variables on this target"));
1197 target_xfer_error_to_string (enum target_xfer_error err
)
1199 #define CASE(X) case X: return #X
1202 CASE(TARGET_XFER_E_IO
);
1203 CASE(TARGET_XFER_E_UNAVAILABLE
);
1212 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1214 /* target_read_string -- read a null terminated string, up to LEN bytes,
1215 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1216 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1217 is responsible for freeing it. Return the number of bytes successfully
1221 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1223 int tlen
, offset
, i
;
1227 int buffer_allocated
;
1229 unsigned int nbytes_read
= 0;
1231 gdb_assert (string
);
1233 /* Small for testing. */
1234 buffer_allocated
= 4;
1235 buffer
= xmalloc (buffer_allocated
);
1240 tlen
= MIN (len
, 4 - (memaddr
& 3));
1241 offset
= memaddr
& 3;
1243 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1246 /* The transfer request might have crossed the boundary to an
1247 unallocated region of memory. Retry the transfer, requesting
1251 errcode
= target_read_memory (memaddr
, buf
, 1);
1256 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1260 bytes
= bufptr
- buffer
;
1261 buffer_allocated
*= 2;
1262 buffer
= xrealloc (buffer
, buffer_allocated
);
1263 bufptr
= buffer
+ bytes
;
1266 for (i
= 0; i
< tlen
; i
++)
1268 *bufptr
++ = buf
[i
+ offset
];
1269 if (buf
[i
+ offset
] == '\000')
1271 nbytes_read
+= i
+ 1;
1278 nbytes_read
+= tlen
;
1287 struct target_section_table
*
1288 target_get_section_table (struct target_ops
*target
)
1290 struct target_ops
*t
;
1293 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1295 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1296 if (t
->to_get_section_table
!= NULL
)
1297 return (*t
->to_get_section_table
) (t
);
1302 /* Find a section containing ADDR. */
1304 struct target_section
*
1305 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1307 struct target_section_table
*table
= target_get_section_table (target
);
1308 struct target_section
*secp
;
1313 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1315 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1321 /* Read memory from the live target, even if currently inspecting a
1322 traceframe. The return is the same as that of target_read. */
1325 target_read_live_memory (enum target_object object
,
1326 ULONGEST memaddr
, gdb_byte
*myaddr
, LONGEST len
)
1329 struct cleanup
*cleanup
;
1331 /* Switch momentarily out of tfind mode so to access live memory.
1332 Note that this must not clear global state, such as the frame
1333 cache, which must still remain valid for the previous traceframe.
1334 We may be _building_ the frame cache at this point. */
1335 cleanup
= make_cleanup_restore_traceframe_number ();
1336 set_traceframe_number (-1);
1338 ret
= target_read (current_target
.beneath
, object
, NULL
,
1339 myaddr
, memaddr
, len
);
1341 do_cleanups (cleanup
);
1345 /* Using the set of read-only target sections of OPS, read live
1346 read-only memory. Note that the actual reads start from the
1347 top-most target again.
1349 For interface/parameters/return description see target.h,
1353 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1354 enum target_object object
,
1355 gdb_byte
*readbuf
, ULONGEST memaddr
,
1358 struct target_section
*secp
;
1359 struct target_section_table
*table
;
1361 secp
= target_section_by_addr (ops
, memaddr
);
1363 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1364 secp
->the_bfd_section
)
1367 struct target_section
*p
;
1368 ULONGEST memend
= memaddr
+ len
;
1370 table
= target_get_section_table (ops
);
1372 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1374 if (memaddr
>= p
->addr
)
1376 if (memend
<= p
->endaddr
)
1378 /* Entire transfer is within this section. */
1379 return target_read_live_memory (object
, memaddr
,
1382 else if (memaddr
>= p
->endaddr
)
1384 /* This section ends before the transfer starts. */
1389 /* This section overlaps the transfer. Just do half. */
1390 len
= p
->endaddr
- memaddr
;
1391 return target_read_live_memory (object
, memaddr
,
1401 /* Perform a partial memory transfer.
1402 For docs see target.h, to_xfer_partial. */
1405 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1406 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1411 struct mem_region
*region
;
1412 struct inferior
*inf
;
1414 /* For accesses to unmapped overlay sections, read directly from
1415 files. Must do this first, as MEMADDR may need adjustment. */
1416 if (readbuf
!= NULL
&& overlay_debugging
)
1418 struct obj_section
*section
= find_pc_overlay (memaddr
);
1420 if (pc_in_unmapped_range (memaddr
, section
))
1422 struct target_section_table
*table
1423 = target_get_section_table (ops
);
1424 const char *section_name
= section
->the_bfd_section
->name
;
1426 memaddr
= overlay_mapped_address (memaddr
, section
);
1427 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1430 table
->sections_end
,
1435 /* Try the executable files, if "trust-readonly-sections" is set. */
1436 if (readbuf
!= NULL
&& trust_readonly
)
1438 struct target_section
*secp
;
1439 struct target_section_table
*table
;
1441 secp
= target_section_by_addr (ops
, memaddr
);
1443 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1444 secp
->the_bfd_section
)
1447 table
= target_get_section_table (ops
);
1448 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1451 table
->sections_end
,
1456 /* If reading unavailable memory in the context of traceframes, and
1457 this address falls within a read-only section, fallback to
1458 reading from live memory. */
1459 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1461 VEC(mem_range_s
) *available
;
1463 /* If we fail to get the set of available memory, then the
1464 target does not support querying traceframe info, and so we
1465 attempt reading from the traceframe anyway (assuming the
1466 target implements the old QTro packet then). */
1467 if (traceframe_available_memory (&available
, memaddr
, len
))
1469 struct cleanup
*old_chain
;
1471 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1473 if (VEC_empty (mem_range_s
, available
)
1474 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1476 /* Don't read into the traceframe's available
1478 if (!VEC_empty (mem_range_s
, available
))
1480 LONGEST oldlen
= len
;
1482 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1483 gdb_assert (len
<= oldlen
);
1486 do_cleanups (old_chain
);
1488 /* This goes through the topmost target again. */
1489 res
= memory_xfer_live_readonly_partial (ops
, object
,
1490 readbuf
, memaddr
, len
);
1494 /* No use trying further, we know some memory starting
1495 at MEMADDR isn't available. */
1496 return TARGET_XFER_E_UNAVAILABLE
;
1499 /* Don't try to read more than how much is available, in
1500 case the target implements the deprecated QTro packet to
1501 cater for older GDBs (the target's knowledge of read-only
1502 sections may be outdated by now). */
1503 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1505 do_cleanups (old_chain
);
1509 /* Try GDB's internal data cache. */
1510 region
= lookup_mem_region (memaddr
);
1511 /* region->hi == 0 means there's no upper bound. */
1512 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1515 reg_len
= region
->hi
- memaddr
;
1517 switch (region
->attrib
.mode
)
1520 if (writebuf
!= NULL
)
1525 if (readbuf
!= NULL
)
1530 /* We only support writing to flash during "load" for now. */
1531 if (writebuf
!= NULL
)
1532 error (_("Writing to flash memory forbidden in this context"));
1539 if (!ptid_equal (inferior_ptid
, null_ptid
))
1540 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1545 /* The dcache reads whole cache lines; that doesn't play well
1546 with reading from a trace buffer, because reading outside of
1547 the collected memory range fails. */
1548 && get_traceframe_number () == -1
1549 && (region
->attrib
.cache
1550 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1551 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1553 DCACHE
*dcache
= target_dcache_get_or_init ();
1555 if (readbuf
!= NULL
)
1556 res
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1558 /* FIXME drow/2006-08-09: If we're going to preserve const
1559 correctness dcache_xfer_memory should take readbuf and
1561 res
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1569 /* If none of those methods found the memory we wanted, fall back
1570 to a target partial transfer. Normally a single call to
1571 to_xfer_partial is enough; if it doesn't recognize an object
1572 it will call the to_xfer_partial of the next target down.
1573 But for memory this won't do. Memory is the only target
1574 object which can be read from more than one valid target.
1575 A core file, for instance, could have some of memory but
1576 delegate other bits to the target below it. So, we must
1577 manually try all targets. */
1581 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1582 readbuf
, writebuf
, memaddr
, reg_len
);
1586 /* We want to continue past core files to executables, but not
1587 past a running target's memory. */
1588 if (ops
->to_has_all_memory (ops
))
1593 while (ops
!= NULL
);
1595 /* Make sure the cache gets updated no matter what - if we are writing
1596 to the stack. Even if this write is not tagged as such, we still need
1597 to update the cache. */
1602 && target_dcache_init_p ()
1603 && !region
->attrib
.cache
1604 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1605 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1607 DCACHE
*dcache
= target_dcache_get ();
1609 dcache_update (dcache
, memaddr
, (void *) writebuf
, res
);
1612 /* If we still haven't got anything, return the last error. We
1617 /* Perform a partial memory transfer. For docs see target.h,
1621 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1622 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1627 /* Zero length requests are ok and require no work. */
1631 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1632 breakpoint insns, thus hiding out from higher layers whether
1633 there are software breakpoints inserted in the code stream. */
1634 if (readbuf
!= NULL
)
1636 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
);
1638 if (res
> 0 && !show_memory_breakpoints
)
1639 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1644 struct cleanup
*old_chain
;
1646 /* A large write request is likely to be partially satisfied
1647 by memory_xfer_partial_1. We will continually malloc
1648 and free a copy of the entire write request for breakpoint
1649 shadow handling even though we only end up writing a small
1650 subset of it. Cap writes to 4KB to mitigate this. */
1651 len
= min (4096, len
);
1653 buf
= xmalloc (len
);
1654 old_chain
= make_cleanup (xfree
, buf
);
1655 memcpy (buf
, writebuf
, len
);
1657 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1658 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
);
1660 do_cleanups (old_chain
);
1667 restore_show_memory_breakpoints (void *arg
)
1669 show_memory_breakpoints
= (uintptr_t) arg
;
1673 make_show_memory_breakpoints_cleanup (int show
)
1675 int current
= show_memory_breakpoints
;
1677 show_memory_breakpoints
= show
;
1678 return make_cleanup (restore_show_memory_breakpoints
,
1679 (void *) (uintptr_t) current
);
1682 /* For docs see target.h, to_xfer_partial. */
1685 target_xfer_partial (struct target_ops
*ops
,
1686 enum target_object object
, const char *annex
,
1687 void *readbuf
, const void *writebuf
,
1688 ULONGEST offset
, LONGEST len
)
1692 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1694 if (writebuf
&& !may_write_memory
)
1695 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1696 core_addr_to_string_nz (offset
), plongest (len
));
1698 /* If this is a memory transfer, let the memory-specific code
1699 have a look at it instead. Memory transfers are more
1701 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1702 || object
== TARGET_OBJECT_CODE_MEMORY
)
1703 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1704 writebuf
, offset
, len
);
1707 enum target_object raw_object
= object
;
1709 /* If this is a raw memory transfer, request the normal
1710 memory object from other layers. */
1711 if (raw_object
== TARGET_OBJECT_RAW_MEMORY
)
1712 raw_object
= TARGET_OBJECT_MEMORY
;
1714 retval
= ops
->to_xfer_partial (ops
, raw_object
, annex
, readbuf
,
1715 writebuf
, offset
, len
);
1720 const unsigned char *myaddr
= NULL
;
1722 fprintf_unfiltered (gdb_stdlog
,
1723 "%s:target_xfer_partial "
1724 "(%d, %s, %s, %s, %s, %s) = %s",
1727 (annex
? annex
: "(null)"),
1728 host_address_to_string (readbuf
),
1729 host_address_to_string (writebuf
),
1730 core_addr_to_string_nz (offset
),
1731 plongest (len
), plongest (retval
));
1737 if (retval
> 0 && myaddr
!= NULL
)
1741 fputs_unfiltered (", bytes =", gdb_stdlog
);
1742 for (i
= 0; i
< retval
; i
++)
1744 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1746 if (targetdebug
< 2 && i
> 0)
1748 fprintf_unfiltered (gdb_stdlog
, " ...");
1751 fprintf_unfiltered (gdb_stdlog
, "\n");
1754 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1758 fputc_unfiltered ('\n', gdb_stdlog
);
1763 /* Read LEN bytes of target memory at address MEMADDR, placing the
1764 results in GDB's memory at MYADDR. Returns either 0 for success or
1765 a target_xfer_error value if any error occurs.
1767 If an error occurs, no guarantee is made about the contents of the data at
1768 MYADDR. In particular, the caller should not depend upon partial reads
1769 filling the buffer with good data. There is no way for the caller to know
1770 how much good data might have been transfered anyway. Callers that can
1771 deal with partial reads should call target_read (which will retry until
1772 it makes no progress, and then return how much was transferred). */
1775 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1777 /* Dispatch to the topmost target, not the flattened current_target.
1778 Memory accesses check target->to_has_(all_)memory, and the
1779 flattened target doesn't inherit those. */
1780 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1781 myaddr
, memaddr
, len
) == len
)
1784 return TARGET_XFER_E_IO
;
1787 /* Like target_read_memory, but specify explicitly that this is a read from
1788 the target's stack. This may trigger different cache behavior. */
1791 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1793 /* Dispatch to the topmost target, not the flattened current_target.
1794 Memory accesses check target->to_has_(all_)memory, and the
1795 flattened target doesn't inherit those. */
1797 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1798 myaddr
, memaddr
, len
) == len
)
1801 return TARGET_XFER_E_IO
;
1804 /* Like target_read_memory, but specify explicitly that this is a read from
1805 the target's code. This may trigger different cache behavior. */
1808 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1810 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1811 myaddr
, memaddr
, len
) == len
)
1814 return TARGET_XFER_E_IO
;
1817 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1818 Returns either 0 for success or a target_xfer_error value if any
1819 error occurs. If an error occurs, no guarantee is made about how
1820 much data got written. Callers that can deal with partial writes
1821 should call target_write. */
1824 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1826 /* Dispatch to the topmost target, not the flattened current_target.
1827 Memory accesses check target->to_has_(all_)memory, and the
1828 flattened target doesn't inherit those. */
1829 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1830 myaddr
, memaddr
, len
) == len
)
1833 return TARGET_XFER_E_IO
;
1836 /* Write LEN bytes from MYADDR to target raw memory at address
1837 MEMADDR. Returns either 0 for success or a target_xfer_error value
1838 if any error occurs. If an error occurs, no guarantee is made
1839 about how much data got written. Callers that can deal with
1840 partial writes should call target_write. */
1843 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1845 /* Dispatch to the topmost target, not the flattened current_target.
1846 Memory accesses check target->to_has_(all_)memory, and the
1847 flattened target doesn't inherit those. */
1848 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1849 myaddr
, memaddr
, len
) == len
)
1852 return TARGET_XFER_E_IO
;
1855 /* Fetch the target's memory map. */
1858 target_memory_map (void)
1860 VEC(mem_region_s
) *result
;
1861 struct mem_region
*last_one
, *this_one
;
1863 struct target_ops
*t
;
1866 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1868 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1869 if (t
->to_memory_map
!= NULL
)
1875 result
= t
->to_memory_map (t
);
1879 qsort (VEC_address (mem_region_s
, result
),
1880 VEC_length (mem_region_s
, result
),
1881 sizeof (struct mem_region
), mem_region_cmp
);
1883 /* Check that regions do not overlap. Simultaneously assign
1884 a numbering for the "mem" commands to use to refer to
1887 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1889 this_one
->number
= ix
;
1891 if (last_one
&& last_one
->hi
> this_one
->lo
)
1893 warning (_("Overlapping regions in memory map: ignoring"));
1894 VEC_free (mem_region_s
, result
);
1897 last_one
= this_one
;
1904 target_flash_erase (ULONGEST address
, LONGEST length
)
1906 struct target_ops
*t
;
1908 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1909 if (t
->to_flash_erase
!= NULL
)
1912 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1913 hex_string (address
), phex (length
, 0));
1914 t
->to_flash_erase (t
, address
, length
);
1922 target_flash_done (void)
1924 struct target_ops
*t
;
1926 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1927 if (t
->to_flash_done
!= NULL
)
1930 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1931 t
->to_flash_done (t
);
1939 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1940 struct cmd_list_element
*c
, const char *value
)
1942 fprintf_filtered (file
,
1943 _("Mode for reading from readonly sections is %s.\n"),
1947 /* More generic transfers. */
1950 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1951 const char *annex
, gdb_byte
*readbuf
,
1952 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1954 if (object
== TARGET_OBJECT_MEMORY
1955 && ops
->deprecated_xfer_memory
!= NULL
)
1956 /* If available, fall back to the target's
1957 "deprecated_xfer_memory" method. */
1962 if (writebuf
!= NULL
)
1964 void *buffer
= xmalloc (len
);
1965 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1967 memcpy (buffer
, writebuf
, len
);
1968 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1969 1/*write*/, NULL
, ops
);
1970 do_cleanups (cleanup
);
1972 if (readbuf
!= NULL
)
1973 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1974 0/*read*/, NULL
, ops
);
1977 else if (xfered
== 0 && errno
== 0)
1978 /* "deprecated_xfer_memory" uses 0, cross checked against
1979 ERRNO as one indication of an error. */
1984 else if (ops
->beneath
!= NULL
)
1985 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1986 readbuf
, writebuf
, offset
, len
);
1991 /* The xfer_partial handler for the topmost target. Unlike the default,
1992 it does not need to handle memory specially; it just passes all
1993 requests down the stack. */
1996 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1997 const char *annex
, gdb_byte
*readbuf
,
1998 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
2000 if (ops
->beneath
!= NULL
)
2001 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
2002 readbuf
, writebuf
, offset
, len
);
2007 /* Target vector read/write partial wrapper functions. */
2010 target_read_partial (struct target_ops
*ops
,
2011 enum target_object object
,
2012 const char *annex
, gdb_byte
*buf
,
2013 ULONGEST offset
, LONGEST len
)
2015 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
2019 target_write_partial (struct target_ops
*ops
,
2020 enum target_object object
,
2021 const char *annex
, const gdb_byte
*buf
,
2022 ULONGEST offset
, LONGEST len
)
2024 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
2027 /* Wrappers to perform the full transfer. */
2029 /* For docs on target_read see target.h. */
2032 target_read (struct target_ops
*ops
,
2033 enum target_object object
,
2034 const char *annex
, gdb_byte
*buf
,
2035 ULONGEST offset
, LONGEST len
)
2039 while (xfered
< len
)
2041 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
2042 (gdb_byte
*) buf
+ xfered
,
2043 offset
+ xfered
, len
- xfered
);
2045 /* Call an observer, notifying them of the xfer progress? */
2056 /* Assuming that the entire [begin, end) range of memory cannot be
2057 read, try to read whatever subrange is possible to read.
2059 The function returns, in RESULT, either zero or one memory block.
2060 If there's a readable subrange at the beginning, it is completely
2061 read and returned. Any further readable subrange will not be read.
2062 Otherwise, if there's a readable subrange at the end, it will be
2063 completely read and returned. Any readable subranges before it
2064 (obviously, not starting at the beginning), will be ignored. In
2065 other cases -- either no readable subrange, or readable subrange(s)
2066 that is neither at the beginning, or end, nothing is returned.
2068 The purpose of this function is to handle a read across a boundary
2069 of accessible memory in a case when memory map is not available.
2070 The above restrictions are fine for this case, but will give
2071 incorrect results if the memory is 'patchy'. However, supporting
2072 'patchy' memory would require trying to read every single byte,
2073 and it seems unacceptable solution. Explicit memory map is
2074 recommended for this case -- and target_read_memory_robust will
2075 take care of reading multiple ranges then. */
2078 read_whatever_is_readable (struct target_ops
*ops
,
2079 ULONGEST begin
, ULONGEST end
,
2080 VEC(memory_read_result_s
) **result
)
2082 gdb_byte
*buf
= xmalloc (end
- begin
);
2083 ULONGEST current_begin
= begin
;
2084 ULONGEST current_end
= end
;
2086 memory_read_result_s r
;
2088 /* If we previously failed to read 1 byte, nothing can be done here. */
2089 if (end
- begin
<= 1)
2095 /* Check that either first or the last byte is readable, and give up
2096 if not. This heuristic is meant to permit reading accessible memory
2097 at the boundary of accessible region. */
2098 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2099 buf
, begin
, 1) == 1)
2104 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2105 buf
+ (end
-begin
) - 1, end
- 1, 1) == 1)
2116 /* Loop invariant is that the [current_begin, current_end) was previously
2117 found to be not readable as a whole.
2119 Note loop condition -- if the range has 1 byte, we can't divide the range
2120 so there's no point trying further. */
2121 while (current_end
- current_begin
> 1)
2123 ULONGEST first_half_begin
, first_half_end
;
2124 ULONGEST second_half_begin
, second_half_end
;
2126 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2130 first_half_begin
= current_begin
;
2131 first_half_end
= middle
;
2132 second_half_begin
= middle
;
2133 second_half_end
= current_end
;
2137 first_half_begin
= middle
;
2138 first_half_end
= current_end
;
2139 second_half_begin
= current_begin
;
2140 second_half_end
= middle
;
2143 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2144 buf
+ (first_half_begin
- begin
),
2146 first_half_end
- first_half_begin
);
2148 if (xfer
== first_half_end
- first_half_begin
)
2150 /* This half reads up fine. So, the error must be in the
2152 current_begin
= second_half_begin
;
2153 current_end
= second_half_end
;
2157 /* This half is not readable. Because we've tried one byte, we
2158 know some part of this half if actually redable. Go to the next
2159 iteration to divide again and try to read.
2161 We don't handle the other half, because this function only tries
2162 to read a single readable subrange. */
2163 current_begin
= first_half_begin
;
2164 current_end
= first_half_end
;
2170 /* The [begin, current_begin) range has been read. */
2172 r
.end
= current_begin
;
2177 /* The [current_end, end) range has been read. */
2178 LONGEST rlen
= end
- current_end
;
2180 r
.data
= xmalloc (rlen
);
2181 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2182 r
.begin
= current_end
;
2186 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2190 free_memory_read_result_vector (void *x
)
2192 VEC(memory_read_result_s
) *v
= x
;
2193 memory_read_result_s
*current
;
2196 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2198 xfree (current
->data
);
2200 VEC_free (memory_read_result_s
, v
);
2203 VEC(memory_read_result_s
) *
2204 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2206 VEC(memory_read_result_s
) *result
= 0;
2209 while (xfered
< len
)
2211 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2214 /* If there is no explicit region, a fake one should be created. */
2215 gdb_assert (region
);
2217 if (region
->hi
== 0)
2218 rlen
= len
- xfered
;
2220 rlen
= region
->hi
- offset
;
2222 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2224 /* Cannot read this region. Note that we can end up here only
2225 if the region is explicitly marked inaccessible, or
2226 'inaccessible-by-default' is in effect. */
2231 LONGEST to_read
= min (len
- xfered
, rlen
);
2232 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2234 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2235 (gdb_byte
*) buffer
,
2236 offset
+ xfered
, to_read
);
2237 /* Call an observer, notifying them of the xfer progress? */
2240 /* Got an error reading full chunk. See if maybe we can read
2243 read_whatever_is_readable (ops
, offset
+ xfered
,
2244 offset
+ xfered
+ to_read
, &result
);
2249 struct memory_read_result r
;
2251 r
.begin
= offset
+ xfered
;
2252 r
.end
= r
.begin
+ xfer
;
2253 VEC_safe_push (memory_read_result_s
, result
, &r
);
2263 /* An alternative to target_write with progress callbacks. */
2266 target_write_with_progress (struct target_ops
*ops
,
2267 enum target_object object
,
2268 const char *annex
, const gdb_byte
*buf
,
2269 ULONGEST offset
, LONGEST len
,
2270 void (*progress
) (ULONGEST
, void *), void *baton
)
2274 /* Give the progress callback a chance to set up. */
2276 (*progress
) (0, baton
);
2278 while (xfered
< len
)
2280 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
2281 (gdb_byte
*) buf
+ xfered
,
2282 offset
+ xfered
, len
- xfered
);
2290 (*progress
) (xfer
, baton
);
2298 /* For docs on target_write see target.h. */
2301 target_write (struct target_ops
*ops
,
2302 enum target_object object
,
2303 const char *annex
, const gdb_byte
*buf
,
2304 ULONGEST offset
, LONGEST len
)
2306 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2310 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2311 the size of the transferred data. PADDING additional bytes are
2312 available in *BUF_P. This is a helper function for
2313 target_read_alloc; see the declaration of that function for more
2317 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2318 const char *annex
, gdb_byte
**buf_p
, int padding
)
2320 size_t buf_alloc
, buf_pos
;
2324 /* This function does not have a length parameter; it reads the
2325 entire OBJECT). Also, it doesn't support objects fetched partly
2326 from one target and partly from another (in a different stratum,
2327 e.g. a core file and an executable). Both reasons make it
2328 unsuitable for reading memory. */
2329 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2331 /* Start by reading up to 4K at a time. The target will throttle
2332 this number down if necessary. */
2334 buf
= xmalloc (buf_alloc
);
2338 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2339 buf_pos
, buf_alloc
- buf_pos
- padding
);
2342 /* An error occurred. */
2348 /* Read all there was. */
2358 /* If the buffer is filling up, expand it. */
2359 if (buf_alloc
< buf_pos
* 2)
2362 buf
= xrealloc (buf
, buf_alloc
);
2369 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2370 the size of the transferred data. See the declaration in "target.h"
2371 function for more information about the return value. */
2374 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2375 const char *annex
, gdb_byte
**buf_p
)
2377 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2380 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2381 returned as a string, allocated using xmalloc. If an error occurs
2382 or the transfer is unsupported, NULL is returned. Empty objects
2383 are returned as allocated but empty strings. A warning is issued
2384 if the result contains any embedded NUL bytes. */
2387 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2392 LONGEST i
, transferred
;
2394 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2395 bufstr
= (char *) buffer
;
2397 if (transferred
< 0)
2400 if (transferred
== 0)
2401 return xstrdup ("");
2403 bufstr
[transferred
] = 0;
2405 /* Check for embedded NUL bytes; but allow trailing NULs. */
2406 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2409 warning (_("target object %d, annex %s, "
2410 "contained unexpected null characters"),
2411 (int) object
, annex
? annex
: "(none)");
2418 /* Memory transfer methods. */
2421 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2424 /* This method is used to read from an alternate, non-current
2425 target. This read must bypass the overlay support (as symbols
2426 don't match this target), and GDB's internal cache (wrong cache
2427 for this target). */
2428 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2430 memory_error (TARGET_XFER_E_IO
, addr
);
2434 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2435 int len
, enum bfd_endian byte_order
)
2437 gdb_byte buf
[sizeof (ULONGEST
)];
2439 gdb_assert (len
<= sizeof (buf
));
2440 get_target_memory (ops
, addr
, buf
, len
);
2441 return extract_unsigned_integer (buf
, len
, byte_order
);
2445 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2446 struct bp_target_info
*bp_tgt
)
2448 if (!may_insert_breakpoints
)
2450 warning (_("May not insert breakpoints"));
2454 return (*current_target
.to_insert_breakpoint
) (gdbarch
, bp_tgt
);
2458 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2459 struct bp_target_info
*bp_tgt
)
2461 /* This is kind of a weird case to handle, but the permission might
2462 have been changed after breakpoints were inserted - in which case
2463 we should just take the user literally and assume that any
2464 breakpoints should be left in place. */
2465 if (!may_insert_breakpoints
)
2467 warning (_("May not remove breakpoints"));
2471 return (*current_target
.to_remove_breakpoint
) (gdbarch
, bp_tgt
);
2475 target_info (char *args
, int from_tty
)
2477 struct target_ops
*t
;
2478 int has_all_mem
= 0;
2480 if (symfile_objfile
!= NULL
)
2481 printf_unfiltered (_("Symbols from \"%s\".\n"),
2482 objfile_name (symfile_objfile
));
2484 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2486 if (!(*t
->to_has_memory
) (t
))
2489 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2492 printf_unfiltered (_("\tWhile running this, "
2493 "GDB does not access memory from...\n"));
2494 printf_unfiltered ("%s:\n", t
->to_longname
);
2495 (t
->to_files_info
) (t
);
2496 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2500 /* This function is called before any new inferior is created, e.g.
2501 by running a program, attaching, or connecting to a target.
2502 It cleans up any state from previous invocations which might
2503 change between runs. This is a subset of what target_preopen
2504 resets (things which might change between targets). */
2507 target_pre_inferior (int from_tty
)
2509 /* Clear out solib state. Otherwise the solib state of the previous
2510 inferior might have survived and is entirely wrong for the new
2511 target. This has been observed on GNU/Linux using glibc 2.3. How
2523 Cannot access memory at address 0xdeadbeef
2526 /* In some OSs, the shared library list is the same/global/shared
2527 across inferiors. If code is shared between processes, so are
2528 memory regions and features. */
2529 if (!gdbarch_has_global_solist (target_gdbarch ()))
2531 no_shared_libraries (NULL
, from_tty
);
2533 invalidate_target_mem_regions ();
2535 target_clear_description ();
2538 agent_capability_invalidate ();
2541 /* Callback for iterate_over_inferiors. Gets rid of the given
2545 dispose_inferior (struct inferior
*inf
, void *args
)
2547 struct thread_info
*thread
;
2549 thread
= any_thread_of_process (inf
->pid
);
2552 switch_to_thread (thread
->ptid
);
2554 /* Core inferiors actually should be detached, not killed. */
2555 if (target_has_execution
)
2558 target_detach (NULL
, 0);
2564 /* This is to be called by the open routine before it does
2568 target_preopen (int from_tty
)
2572 if (have_inferiors ())
2575 || !have_live_inferiors ()
2576 || query (_("A program is being debugged already. Kill it? ")))
2577 iterate_over_inferiors (dispose_inferior
, NULL
);
2579 error (_("Program not killed."));
2582 /* Calling target_kill may remove the target from the stack. But if
2583 it doesn't (which seems like a win for UDI), remove it now. */
2584 /* Leave the exec target, though. The user may be switching from a
2585 live process to a core of the same program. */
2586 pop_all_targets_above (file_stratum
);
2588 target_pre_inferior (from_tty
);
2591 /* Detach a target after doing deferred register stores. */
2594 target_detach (const char *args
, int from_tty
)
2596 struct target_ops
* t
;
2598 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2599 /* Don't remove global breakpoints here. They're removed on
2600 disconnection from the target. */
2603 /* If we're in breakpoints-always-inserted mode, have to remove
2604 them before detaching. */
2605 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2607 prepare_for_detach ();
2609 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2611 if (t
->to_detach
!= NULL
)
2613 t
->to_detach (t
, args
, from_tty
);
2615 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2621 internal_error (__FILE__
, __LINE__
, _("could not find a target to detach"));
2625 target_disconnect (char *args
, int from_tty
)
2627 struct target_ops
*t
;
2629 /* If we're in breakpoints-always-inserted mode or if breakpoints
2630 are global across processes, we have to remove them before
2632 remove_breakpoints ();
2634 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2635 if (t
->to_disconnect
!= NULL
)
2638 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2640 t
->to_disconnect (t
, args
, from_tty
);
2648 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2650 struct target_ops
*t
;
2652 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2654 if (t
->to_wait
!= NULL
)
2656 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2660 char *status_string
;
2661 char *options_string
;
2663 status_string
= target_waitstatus_to_string (status
);
2664 options_string
= target_options_to_string (options
);
2665 fprintf_unfiltered (gdb_stdlog
,
2666 "target_wait (%d, status, options={%s})"
2668 ptid_get_pid (ptid
), options_string
,
2669 ptid_get_pid (retval
), status_string
);
2670 xfree (status_string
);
2671 xfree (options_string
);
2682 target_pid_to_str (ptid_t ptid
)
2684 struct target_ops
*t
;
2686 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2688 if (t
->to_pid_to_str
!= NULL
)
2689 return (*t
->to_pid_to_str
) (t
, ptid
);
2692 return normal_pid_to_str (ptid
);
2696 target_thread_name (struct thread_info
*info
)
2698 struct target_ops
*t
;
2700 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2702 if (t
->to_thread_name
!= NULL
)
2703 return (*t
->to_thread_name
) (info
);
2710 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2712 struct target_ops
*t
;
2714 target_dcache_invalidate ();
2716 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2718 if (t
->to_resume
!= NULL
)
2720 t
->to_resume (t
, ptid
, step
, signal
);
2722 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2723 ptid_get_pid (ptid
),
2724 step
? "step" : "continue",
2725 gdb_signal_to_name (signal
));
2727 registers_changed_ptid (ptid
);
2728 set_executing (ptid
, 1);
2729 set_running (ptid
, 1);
2730 clear_inline_frame_state (ptid
);
2739 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2741 struct target_ops
*t
;
2743 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2745 if (t
->to_pass_signals
!= NULL
)
2751 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2754 for (i
= 0; i
< numsigs
; i
++)
2755 if (pass_signals
[i
])
2756 fprintf_unfiltered (gdb_stdlog
, " %s",
2757 gdb_signal_to_name (i
));
2759 fprintf_unfiltered (gdb_stdlog
, " })\n");
2762 (*t
->to_pass_signals
) (numsigs
, pass_signals
);
2769 target_program_signals (int numsigs
, unsigned char *program_signals
)
2771 struct target_ops
*t
;
2773 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2775 if (t
->to_program_signals
!= NULL
)
2781 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2784 for (i
= 0; i
< numsigs
; i
++)
2785 if (program_signals
[i
])
2786 fprintf_unfiltered (gdb_stdlog
, " %s",
2787 gdb_signal_to_name (i
));
2789 fprintf_unfiltered (gdb_stdlog
, " })\n");
2792 (*t
->to_program_signals
) (numsigs
, program_signals
);
2798 /* Look through the list of possible targets for a target that can
2802 target_follow_fork (int follow_child
, int detach_fork
)
2804 struct target_ops
*t
;
2806 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2808 if (t
->to_follow_fork
!= NULL
)
2810 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2813 fprintf_unfiltered (gdb_stdlog
,
2814 "target_follow_fork (%d, %d) = %d\n",
2815 follow_child
, detach_fork
, retval
);
2820 /* Some target returned a fork event, but did not know how to follow it. */
2821 internal_error (__FILE__
, __LINE__
,
2822 _("could not find a target to follow fork"));
2826 target_mourn_inferior (void)
2828 struct target_ops
*t
;
2830 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2832 if (t
->to_mourn_inferior
!= NULL
)
2834 t
->to_mourn_inferior (t
);
2836 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2838 /* We no longer need to keep handles on any of the object files.
2839 Make sure to release them to avoid unnecessarily locking any
2840 of them while we're not actually debugging. */
2841 bfd_cache_close_all ();
2847 internal_error (__FILE__
, __LINE__
,
2848 _("could not find a target to follow mourn inferior"));
2851 /* Look for a target which can describe architectural features, starting
2852 from TARGET. If we find one, return its description. */
2854 const struct target_desc
*
2855 target_read_description (struct target_ops
*target
)
2857 struct target_ops
*t
;
2859 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2860 if (t
->to_read_description
!= NULL
)
2862 const struct target_desc
*tdesc
;
2864 tdesc
= t
->to_read_description (t
);
2872 /* The default implementation of to_search_memory.
2873 This implements a basic search of memory, reading target memory and
2874 performing the search here (as opposed to performing the search in on the
2875 target side with, for example, gdbserver). */
2878 simple_search_memory (struct target_ops
*ops
,
2879 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2880 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2881 CORE_ADDR
*found_addrp
)
2883 /* NOTE: also defined in find.c testcase. */
2884 #define SEARCH_CHUNK_SIZE 16000
2885 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2886 /* Buffer to hold memory contents for searching. */
2887 gdb_byte
*search_buf
;
2888 unsigned search_buf_size
;
2889 struct cleanup
*old_cleanups
;
2891 search_buf_size
= chunk_size
+ pattern_len
- 1;
2893 /* No point in trying to allocate a buffer larger than the search space. */
2894 if (search_space_len
< search_buf_size
)
2895 search_buf_size
= search_space_len
;
2897 search_buf
= malloc (search_buf_size
);
2898 if (search_buf
== NULL
)
2899 error (_("Unable to allocate memory to perform the search."));
2900 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2902 /* Prime the search buffer. */
2904 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2905 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2907 warning (_("Unable to access %s bytes of target "
2908 "memory at %s, halting search."),
2909 pulongest (search_buf_size
), hex_string (start_addr
));
2910 do_cleanups (old_cleanups
);
2914 /* Perform the search.
2916 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2917 When we've scanned N bytes we copy the trailing bytes to the start and
2918 read in another N bytes. */
2920 while (search_space_len
>= pattern_len
)
2922 gdb_byte
*found_ptr
;
2923 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2925 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2926 pattern
, pattern_len
);
2928 if (found_ptr
!= NULL
)
2930 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2932 *found_addrp
= found_addr
;
2933 do_cleanups (old_cleanups
);
2937 /* Not found in this chunk, skip to next chunk. */
2939 /* Don't let search_space_len wrap here, it's unsigned. */
2940 if (search_space_len
>= chunk_size
)
2941 search_space_len
-= chunk_size
;
2943 search_space_len
= 0;
2945 if (search_space_len
>= pattern_len
)
2947 unsigned keep_len
= search_buf_size
- chunk_size
;
2948 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2951 /* Copy the trailing part of the previous iteration to the front
2952 of the buffer for the next iteration. */
2953 gdb_assert (keep_len
== pattern_len
- 1);
2954 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2956 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2958 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2959 search_buf
+ keep_len
, read_addr
,
2960 nr_to_read
) != nr_to_read
)
2962 warning (_("Unable to access %s bytes of target "
2963 "memory at %s, halting search."),
2964 plongest (nr_to_read
),
2965 hex_string (read_addr
));
2966 do_cleanups (old_cleanups
);
2970 start_addr
+= chunk_size
;
2976 do_cleanups (old_cleanups
);
2980 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2981 sequence of bytes in PATTERN with length PATTERN_LEN.
2983 The result is 1 if found, 0 if not found, and -1 if there was an error
2984 requiring halting of the search (e.g. memory read error).
2985 If the pattern is found the address is recorded in FOUND_ADDRP. */
2988 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2989 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2990 CORE_ADDR
*found_addrp
)
2992 struct target_ops
*t
;
2995 /* We don't use INHERIT to set current_target.to_search_memory,
2996 so we have to scan the target stack and handle targetdebug
3000 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
3001 hex_string (start_addr
));
3003 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3004 if (t
->to_search_memory
!= NULL
)
3009 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
3010 pattern
, pattern_len
, found_addrp
);
3014 /* If a special version of to_search_memory isn't available, use the
3016 found
= simple_search_memory (current_target
.beneath
,
3017 start_addr
, search_space_len
,
3018 pattern
, pattern_len
, found_addrp
);
3022 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
3027 /* Look through the currently pushed targets. If none of them will
3028 be able to restart the currently running process, issue an error
3032 target_require_runnable (void)
3034 struct target_ops
*t
;
3036 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3038 /* If this target knows how to create a new program, then
3039 assume we will still be able to after killing the current
3040 one. Either killing and mourning will not pop T, or else
3041 find_default_run_target will find it again. */
3042 if (t
->to_create_inferior
!= NULL
)
3045 /* Do not worry about thread_stratum targets that can not
3046 create inferiors. Assume they will be pushed again if
3047 necessary, and continue to the process_stratum. */
3048 if (t
->to_stratum
== thread_stratum
3049 || t
->to_stratum
== arch_stratum
)
3052 error (_("The \"%s\" target does not support \"run\". "
3053 "Try \"help target\" or \"continue\"."),
3057 /* This function is only called if the target is running. In that
3058 case there should have been a process_stratum target and it
3059 should either know how to create inferiors, or not... */
3060 internal_error (__FILE__
, __LINE__
, _("No targets found"));
3063 /* Look through the list of possible targets for a target that can
3064 execute a run or attach command without any other data. This is
3065 used to locate the default process stratum.
3067 If DO_MESG is not NULL, the result is always valid (error() is
3068 called for errors); else, return NULL on error. */
3070 static struct target_ops
*
3071 find_default_run_target (char *do_mesg
)
3073 struct target_ops
**t
;
3074 struct target_ops
*runable
= NULL
;
3079 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3082 if ((*t
)->to_can_run
&& target_can_run (*t
))
3092 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3101 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3103 struct target_ops
*t
;
3105 t
= find_default_run_target ("attach");
3106 (t
->to_attach
) (t
, args
, from_tty
);
3111 find_default_create_inferior (struct target_ops
*ops
,
3112 char *exec_file
, char *allargs
, char **env
,
3115 struct target_ops
*t
;
3117 t
= find_default_run_target ("run");
3118 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3123 find_default_can_async_p (void)
3125 struct target_ops
*t
;
3127 /* This may be called before the target is pushed on the stack;
3128 look for the default process stratum. If there's none, gdb isn't
3129 configured with a native debugger, and target remote isn't
3131 t
= find_default_run_target (NULL
);
3132 if (t
&& t
->to_can_async_p
)
3133 return (t
->to_can_async_p
) ();
3138 find_default_is_async_p (void)
3140 struct target_ops
*t
;
3142 /* This may be called before the target is pushed on the stack;
3143 look for the default process stratum. If there's none, gdb isn't
3144 configured with a native debugger, and target remote isn't
3146 t
= find_default_run_target (NULL
);
3147 if (t
&& t
->to_is_async_p
)
3148 return (t
->to_is_async_p
) ();
3153 find_default_supports_non_stop (void)
3155 struct target_ops
*t
;
3157 t
= find_default_run_target (NULL
);
3158 if (t
&& t
->to_supports_non_stop
)
3159 return (t
->to_supports_non_stop
) ();
3164 target_supports_non_stop (void)
3166 struct target_ops
*t
;
3168 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3169 if (t
->to_supports_non_stop
)
3170 return t
->to_supports_non_stop ();
3175 /* Implement the "info proc" command. */
3178 target_info_proc (char *args
, enum info_proc_what what
)
3180 struct target_ops
*t
;
3182 /* If we're already connected to something that can get us OS
3183 related data, use it. Otherwise, try using the native
3185 if (current_target
.to_stratum
>= process_stratum
)
3186 t
= current_target
.beneath
;
3188 t
= find_default_run_target (NULL
);
3190 for (; t
!= NULL
; t
= t
->beneath
)
3192 if (t
->to_info_proc
!= NULL
)
3194 t
->to_info_proc (t
, args
, what
);
3197 fprintf_unfiltered (gdb_stdlog
,
3198 "target_info_proc (\"%s\", %d)\n", args
, what
);
3208 find_default_supports_disable_randomization (void)
3210 struct target_ops
*t
;
3212 t
= find_default_run_target (NULL
);
3213 if (t
&& t
->to_supports_disable_randomization
)
3214 return (t
->to_supports_disable_randomization
) ();
3219 target_supports_disable_randomization (void)
3221 struct target_ops
*t
;
3223 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3224 if (t
->to_supports_disable_randomization
)
3225 return t
->to_supports_disable_randomization ();
3231 target_get_osdata (const char *type
)
3233 struct target_ops
*t
;
3235 /* If we're already connected to something that can get us OS
3236 related data, use it. Otherwise, try using the native
3238 if (current_target
.to_stratum
>= process_stratum
)
3239 t
= current_target
.beneath
;
3241 t
= find_default_run_target ("get OS data");
3246 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3249 /* Determine the current address space of thread PTID. */
3251 struct address_space
*
3252 target_thread_address_space (ptid_t ptid
)
3254 struct address_space
*aspace
;
3255 struct inferior
*inf
;
3256 struct target_ops
*t
;
3258 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3260 if (t
->to_thread_address_space
!= NULL
)
3262 aspace
= t
->to_thread_address_space (t
, ptid
);
3263 gdb_assert (aspace
);
3266 fprintf_unfiltered (gdb_stdlog
,
3267 "target_thread_address_space (%s) = %d\n",
3268 target_pid_to_str (ptid
),
3269 address_space_num (aspace
));
3274 /* Fall-back to the "main" address space of the inferior. */
3275 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3277 if (inf
== NULL
|| inf
->aspace
== NULL
)
3278 internal_error (__FILE__
, __LINE__
,
3279 _("Can't determine the current "
3280 "address space of thread %s\n"),
3281 target_pid_to_str (ptid
));
3287 /* Target file operations. */
3289 static struct target_ops
*
3290 default_fileio_target (void)
3292 /* If we're already connected to something that can perform
3293 file I/O, use it. Otherwise, try using the native target. */
3294 if (current_target
.to_stratum
>= process_stratum
)
3295 return current_target
.beneath
;
3297 return find_default_run_target ("file I/O");
3300 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3301 target file descriptor, or -1 if an error occurs (and set
3304 target_fileio_open (const char *filename
, int flags
, int mode
,
3307 struct target_ops
*t
;
3309 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3311 if (t
->to_fileio_open
!= NULL
)
3313 int fd
= t
->to_fileio_open (filename
, flags
, mode
, target_errno
);
3316 fprintf_unfiltered (gdb_stdlog
,
3317 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3318 filename
, flags
, mode
,
3319 fd
, fd
!= -1 ? 0 : *target_errno
);
3324 *target_errno
= FILEIO_ENOSYS
;
3328 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3329 Return the number of bytes written, or -1 if an error occurs
3330 (and set *TARGET_ERRNO). */
3332 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3333 ULONGEST offset
, int *target_errno
)
3335 struct target_ops
*t
;
3337 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3339 if (t
->to_fileio_pwrite
!= NULL
)
3341 int ret
= t
->to_fileio_pwrite (fd
, write_buf
, len
, offset
,
3345 fprintf_unfiltered (gdb_stdlog
,
3346 "target_fileio_pwrite (%d,...,%d,%s) "
3348 fd
, len
, pulongest (offset
),
3349 ret
, ret
!= -1 ? 0 : *target_errno
);
3354 *target_errno
= FILEIO_ENOSYS
;
3358 /* Read up to LEN bytes FD on the target into READ_BUF.
3359 Return the number of bytes read, or -1 if an error occurs
3360 (and set *TARGET_ERRNO). */
3362 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3363 ULONGEST offset
, int *target_errno
)
3365 struct target_ops
*t
;
3367 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3369 if (t
->to_fileio_pread
!= NULL
)
3371 int ret
= t
->to_fileio_pread (fd
, read_buf
, len
, offset
,
3375 fprintf_unfiltered (gdb_stdlog
,
3376 "target_fileio_pread (%d,...,%d,%s) "
3378 fd
, len
, pulongest (offset
),
3379 ret
, ret
!= -1 ? 0 : *target_errno
);
3384 *target_errno
= FILEIO_ENOSYS
;
3388 /* Close FD on the target. Return 0, or -1 if an error occurs
3389 (and set *TARGET_ERRNO). */
3391 target_fileio_close (int fd
, int *target_errno
)
3393 struct target_ops
*t
;
3395 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3397 if (t
->to_fileio_close
!= NULL
)
3399 int ret
= t
->to_fileio_close (fd
, target_errno
);
3402 fprintf_unfiltered (gdb_stdlog
,
3403 "target_fileio_close (%d) = %d (%d)\n",
3404 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3409 *target_errno
= FILEIO_ENOSYS
;
3413 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3414 occurs (and set *TARGET_ERRNO). */
3416 target_fileio_unlink (const char *filename
, int *target_errno
)
3418 struct target_ops
*t
;
3420 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3422 if (t
->to_fileio_unlink
!= NULL
)
3424 int ret
= t
->to_fileio_unlink (filename
, target_errno
);
3427 fprintf_unfiltered (gdb_stdlog
,
3428 "target_fileio_unlink (%s) = %d (%d)\n",
3429 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3434 *target_errno
= FILEIO_ENOSYS
;
3438 /* Read value of symbolic link FILENAME on the target. Return a
3439 null-terminated string allocated via xmalloc, or NULL if an error
3440 occurs (and set *TARGET_ERRNO). */
3442 target_fileio_readlink (const char *filename
, int *target_errno
)
3444 struct target_ops
*t
;
3446 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3448 if (t
->to_fileio_readlink
!= NULL
)
3450 char *ret
= t
->to_fileio_readlink (filename
, target_errno
);
3453 fprintf_unfiltered (gdb_stdlog
,
3454 "target_fileio_readlink (%s) = %s (%d)\n",
3455 filename
, ret
? ret
: "(nil)",
3456 ret
? 0 : *target_errno
);
3461 *target_errno
= FILEIO_ENOSYS
;
3466 target_fileio_close_cleanup (void *opaque
)
3468 int fd
= *(int *) opaque
;
3471 target_fileio_close (fd
, &target_errno
);
3474 /* Read target file FILENAME. Store the result in *BUF_P and
3475 return the size of the transferred data. PADDING additional bytes are
3476 available in *BUF_P. This is a helper function for
3477 target_fileio_read_alloc; see the declaration of that function for more
3481 target_fileio_read_alloc_1 (const char *filename
,
3482 gdb_byte
**buf_p
, int padding
)
3484 struct cleanup
*close_cleanup
;
3485 size_t buf_alloc
, buf_pos
;
3491 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3495 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3497 /* Start by reading up to 4K at a time. The target will throttle
3498 this number down if necessary. */
3500 buf
= xmalloc (buf_alloc
);
3504 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3505 buf_alloc
- buf_pos
- padding
, buf_pos
,
3509 /* An error occurred. */
3510 do_cleanups (close_cleanup
);
3516 /* Read all there was. */
3517 do_cleanups (close_cleanup
);
3527 /* If the buffer is filling up, expand it. */
3528 if (buf_alloc
< buf_pos
* 2)
3531 buf
= xrealloc (buf
, buf_alloc
);
3538 /* Read target file FILENAME. Store the result in *BUF_P and return
3539 the size of the transferred data. See the declaration in "target.h"
3540 function for more information about the return value. */
3543 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3545 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3548 /* Read target file FILENAME. The result is NUL-terminated and
3549 returned as a string, allocated using xmalloc. If an error occurs
3550 or the transfer is unsupported, NULL is returned. Empty objects
3551 are returned as allocated but empty strings. A warning is issued
3552 if the result contains any embedded NUL bytes. */
3555 target_fileio_read_stralloc (const char *filename
)
3559 LONGEST i
, transferred
;
3561 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3562 bufstr
= (char *) buffer
;
3564 if (transferred
< 0)
3567 if (transferred
== 0)
3568 return xstrdup ("");
3570 bufstr
[transferred
] = 0;
3572 /* Check for embedded NUL bytes; but allow trailing NULs. */
3573 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3576 warning (_("target file %s "
3577 "contained unexpected null characters"),
3587 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3589 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3593 default_watchpoint_addr_within_range (struct target_ops
*target
,
3595 CORE_ADDR start
, int length
)
3597 return addr
>= start
&& addr
< start
+ length
;
3600 static struct gdbarch
*
3601 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3603 return target_gdbarch ();
3619 return_minus_one (void)
3625 * Find the next target down the stack from the specified target.
3629 find_target_beneath (struct target_ops
*t
)
3635 /* The inferior process has died. Long live the inferior! */
3638 generic_mourn_inferior (void)
3642 ptid
= inferior_ptid
;
3643 inferior_ptid
= null_ptid
;
3645 /* Mark breakpoints uninserted in case something tries to delete a
3646 breakpoint while we delete the inferior's threads (which would
3647 fail, since the inferior is long gone). */
3648 mark_breakpoints_out ();
3650 if (!ptid_equal (ptid
, null_ptid
))
3652 int pid
= ptid_get_pid (ptid
);
3653 exit_inferior (pid
);
3656 /* Note this wipes step-resume breakpoints, so needs to be done
3657 after exit_inferior, which ends up referencing the step-resume
3658 breakpoints through clear_thread_inferior_resources. */
3659 breakpoint_init_inferior (inf_exited
);
3661 registers_changed ();
3663 reopen_exec_file ();
3664 reinit_frame_cache ();
3666 if (deprecated_detach_hook
)
3667 deprecated_detach_hook ();
3670 /* Convert a normal process ID to a string. Returns the string in a
3674 normal_pid_to_str (ptid_t ptid
)
3676 static char buf
[32];
3678 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3683 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3685 return normal_pid_to_str (ptid
);
3688 /* Error-catcher for target_find_memory_regions. */
3690 dummy_find_memory_regions (find_memory_region_ftype ignore1
, void *ignore2
)
3692 error (_("Command not implemented for this target."));
3696 /* Error-catcher for target_make_corefile_notes. */
3698 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
3700 error (_("Command not implemented for this target."));
3704 /* Error-catcher for target_get_bookmark. */
3706 dummy_get_bookmark (char *ignore1
, int ignore2
)
3712 /* Error-catcher for target_goto_bookmark. */
3714 dummy_goto_bookmark (gdb_byte
*ignore
, int from_tty
)
3719 /* Set up the handful of non-empty slots needed by the dummy target
3723 init_dummy_target (void)
3725 dummy_target
.to_shortname
= "None";
3726 dummy_target
.to_longname
= "None";
3727 dummy_target
.to_doc
= "";
3728 dummy_target
.to_attach
= find_default_attach
;
3729 dummy_target
.to_detach
=
3730 (void (*)(struct target_ops
*, const char *, int))target_ignore
;
3731 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3732 dummy_target
.to_can_async_p
= find_default_can_async_p
;
3733 dummy_target
.to_is_async_p
= find_default_is_async_p
;
3734 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3735 dummy_target
.to_supports_disable_randomization
3736 = find_default_supports_disable_randomization
;
3737 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3738 dummy_target
.to_stratum
= dummy_stratum
;
3739 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
3740 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
3741 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
3742 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
3743 dummy_target
.to_xfer_partial
= default_xfer_partial
;
3744 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3745 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3746 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3747 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3748 dummy_target
.to_has_execution
3749 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3750 dummy_target
.to_stopped_by_watchpoint
= return_zero
;
3751 dummy_target
.to_stopped_data_address
=
3752 (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
;
3753 dummy_target
.to_magic
= OPS_MAGIC
;
3757 debug_to_open (char *args
, int from_tty
)
3759 debug_target
.to_open (args
, from_tty
);
3761 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3765 target_close (struct target_ops
*targ
)
3767 gdb_assert (!target_is_pushed (targ
));
3769 if (targ
->to_xclose
!= NULL
)
3770 targ
->to_xclose (targ
);
3771 else if (targ
->to_close
!= NULL
)
3775 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3779 target_attach (char *args
, int from_tty
)
3781 struct target_ops
*t
;
3783 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3785 if (t
->to_attach
!= NULL
)
3787 t
->to_attach (t
, args
, from_tty
);
3789 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3795 internal_error (__FILE__
, __LINE__
,
3796 _("could not find a target to attach"));
3800 target_thread_alive (ptid_t ptid
)
3802 struct target_ops
*t
;
3804 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3806 if (t
->to_thread_alive
!= NULL
)
3810 retval
= t
->to_thread_alive (t
, ptid
);
3812 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3813 ptid_get_pid (ptid
), retval
);
3823 target_find_new_threads (void)
3825 struct target_ops
*t
;
3827 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3829 if (t
->to_find_new_threads
!= NULL
)
3831 t
->to_find_new_threads (t
);
3833 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3841 target_stop (ptid_t ptid
)
3845 warning (_("May not interrupt or stop the target, ignoring attempt"));
3849 (*current_target
.to_stop
) (ptid
);
3853 debug_to_post_attach (int pid
)
3855 debug_target
.to_post_attach (pid
);
3857 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3860 /* Concatenate ELEM to LIST, a comma separate list, and return the
3861 result. The LIST incoming argument is released. */
3864 str_comma_list_concat_elem (char *list
, const char *elem
)
3867 return xstrdup (elem
);
3869 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3872 /* Helper for target_options_to_string. If OPT is present in
3873 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3874 Returns the new resulting string. OPT is removed from
3878 do_option (int *target_options
, char *ret
,
3879 int opt
, char *opt_str
)
3881 if ((*target_options
& opt
) != 0)
3883 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3884 *target_options
&= ~opt
;
3891 target_options_to_string (int target_options
)
3895 #define DO_TARG_OPTION(OPT) \
3896 ret = do_option (&target_options, ret, OPT, #OPT)
3898 DO_TARG_OPTION (TARGET_WNOHANG
);
3900 if (target_options
!= 0)
3901 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3909 debug_print_register (const char * func
,
3910 struct regcache
*regcache
, int regno
)
3912 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3914 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3915 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3916 && gdbarch_register_name (gdbarch
, regno
) != NULL
3917 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3918 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3919 gdbarch_register_name (gdbarch
, regno
));
3921 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3922 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3924 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3925 int i
, size
= register_size (gdbarch
, regno
);
3926 gdb_byte buf
[MAX_REGISTER_SIZE
];
3928 regcache_raw_collect (regcache
, regno
, buf
);
3929 fprintf_unfiltered (gdb_stdlog
, " = ");
3930 for (i
= 0; i
< size
; i
++)
3932 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3934 if (size
<= sizeof (LONGEST
))
3936 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3938 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3939 core_addr_to_string_nz (val
), plongest (val
));
3942 fprintf_unfiltered (gdb_stdlog
, "\n");
3946 target_fetch_registers (struct regcache
*regcache
, int regno
)
3948 struct target_ops
*t
;
3950 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3952 if (t
->to_fetch_registers
!= NULL
)
3954 t
->to_fetch_registers (t
, regcache
, regno
);
3956 debug_print_register ("target_fetch_registers", regcache
, regno
);
3963 target_store_registers (struct regcache
*regcache
, int regno
)
3965 struct target_ops
*t
;
3967 if (!may_write_registers
)
3968 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3970 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3972 if (t
->to_store_registers
!= NULL
)
3974 t
->to_store_registers (t
, regcache
, regno
);
3977 debug_print_register ("target_store_registers", regcache
, regno
);
3987 target_core_of_thread (ptid_t ptid
)
3989 struct target_ops
*t
;
3991 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3993 if (t
->to_core_of_thread
!= NULL
)
3995 int retval
= t
->to_core_of_thread (t
, ptid
);
3998 fprintf_unfiltered (gdb_stdlog
,
3999 "target_core_of_thread (%d) = %d\n",
4000 ptid_get_pid (ptid
), retval
);
4009 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
4011 struct target_ops
*t
;
4013 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4015 if (t
->to_verify_memory
!= NULL
)
4017 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
4020 fprintf_unfiltered (gdb_stdlog
,
4021 "target_verify_memory (%s, %s) = %d\n",
4022 paddress (target_gdbarch (), memaddr
),
4032 /* The documentation for this function is in its prototype declaration in
4036 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4038 struct target_ops
*t
;
4040 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4041 if (t
->to_insert_mask_watchpoint
!= NULL
)
4045 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
4048 fprintf_unfiltered (gdb_stdlog
, "\
4049 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
4050 core_addr_to_string (addr
),
4051 core_addr_to_string (mask
), rw
, ret
);
4059 /* The documentation for this function is in its prototype declaration in
4063 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4065 struct target_ops
*t
;
4067 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4068 if (t
->to_remove_mask_watchpoint
!= NULL
)
4072 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
4075 fprintf_unfiltered (gdb_stdlog
, "\
4076 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
4077 core_addr_to_string (addr
),
4078 core_addr_to_string (mask
), rw
, ret
);
4086 /* The documentation for this function is in its prototype declaration
4090 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4092 struct target_ops
*t
;
4094 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4095 if (t
->to_masked_watch_num_registers
!= NULL
)
4096 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4101 /* The documentation for this function is in its prototype declaration
4105 target_ranged_break_num_registers (void)
4107 struct target_ops
*t
;
4109 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4110 if (t
->to_ranged_break_num_registers
!= NULL
)
4111 return t
->to_ranged_break_num_registers (t
);
4119 target_supports_btrace (void)
4121 struct target_ops
*t
;
4123 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4124 if (t
->to_supports_btrace
!= NULL
)
4125 return t
->to_supports_btrace ();
4132 struct btrace_target_info
*
4133 target_enable_btrace (ptid_t ptid
)
4135 struct target_ops
*t
;
4137 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4138 if (t
->to_enable_btrace
!= NULL
)
4139 return t
->to_enable_btrace (ptid
);
4148 target_disable_btrace (struct btrace_target_info
*btinfo
)
4150 struct target_ops
*t
;
4152 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4153 if (t
->to_disable_btrace
!= NULL
)
4155 t
->to_disable_btrace (btinfo
);
4165 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4167 struct target_ops
*t
;
4169 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4170 if (t
->to_teardown_btrace
!= NULL
)
4172 t
->to_teardown_btrace (btinfo
);
4181 VEC (btrace_block_s
) *
4182 target_read_btrace (struct btrace_target_info
*btinfo
,
4183 enum btrace_read_type type
)
4185 struct target_ops
*t
;
4187 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4188 if (t
->to_read_btrace
!= NULL
)
4189 return t
->to_read_btrace (btinfo
, type
);
4198 target_stop_recording (void)
4200 struct target_ops
*t
;
4202 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4203 if (t
->to_stop_recording
!= NULL
)
4205 t
->to_stop_recording ();
4209 /* This is optional. */
4215 target_info_record (void)
4217 struct target_ops
*t
;
4219 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4220 if (t
->to_info_record
!= NULL
)
4222 t
->to_info_record ();
4232 target_save_record (const char *filename
)
4234 struct target_ops
*t
;
4236 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4237 if (t
->to_save_record
!= NULL
)
4239 t
->to_save_record (filename
);
4249 target_supports_delete_record (void)
4251 struct target_ops
*t
;
4253 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4254 if (t
->to_delete_record
!= NULL
)
4263 target_delete_record (void)
4265 struct target_ops
*t
;
4267 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4268 if (t
->to_delete_record
!= NULL
)
4270 t
->to_delete_record ();
4280 target_record_is_replaying (void)
4282 struct target_ops
*t
;
4284 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4285 if (t
->to_record_is_replaying
!= NULL
)
4286 return t
->to_record_is_replaying ();
4294 target_goto_record_begin (void)
4296 struct target_ops
*t
;
4298 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4299 if (t
->to_goto_record_begin
!= NULL
)
4301 t
->to_goto_record_begin ();
4311 target_goto_record_end (void)
4313 struct target_ops
*t
;
4315 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4316 if (t
->to_goto_record_end
!= NULL
)
4318 t
->to_goto_record_end ();
4328 target_goto_record (ULONGEST insn
)
4330 struct target_ops
*t
;
4332 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4333 if (t
->to_goto_record
!= NULL
)
4335 t
->to_goto_record (insn
);
4345 target_insn_history (int size
, int flags
)
4347 struct target_ops
*t
;
4349 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4350 if (t
->to_insn_history
!= NULL
)
4352 t
->to_insn_history (size
, flags
);
4362 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4364 struct target_ops
*t
;
4366 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4367 if (t
->to_insn_history_from
!= NULL
)
4369 t
->to_insn_history_from (from
, size
, flags
);
4379 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4381 struct target_ops
*t
;
4383 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4384 if (t
->to_insn_history_range
!= NULL
)
4386 t
->to_insn_history_range (begin
, end
, flags
);
4396 target_call_history (int size
, int flags
)
4398 struct target_ops
*t
;
4400 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4401 if (t
->to_call_history
!= NULL
)
4403 t
->to_call_history (size
, flags
);
4413 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4415 struct target_ops
*t
;
4417 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4418 if (t
->to_call_history_from
!= NULL
)
4420 t
->to_call_history_from (begin
, size
, flags
);
4430 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4432 struct target_ops
*t
;
4434 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4435 if (t
->to_call_history_range
!= NULL
)
4437 t
->to_call_history_range (begin
, end
, flags
);
4445 debug_to_prepare_to_store (struct regcache
*regcache
)
4447 debug_target
.to_prepare_to_store (regcache
);
4449 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4453 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4454 int write
, struct mem_attrib
*attrib
,
4455 struct target_ops
*target
)
4459 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4462 fprintf_unfiltered (gdb_stdlog
,
4463 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4464 paddress (target_gdbarch (), memaddr
), len
,
4465 write
? "write" : "read", retval
);
4471 fputs_unfiltered (", bytes =", gdb_stdlog
);
4472 for (i
= 0; i
< retval
; i
++)
4474 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4476 if (targetdebug
< 2 && i
> 0)
4478 fprintf_unfiltered (gdb_stdlog
, " ...");
4481 fprintf_unfiltered (gdb_stdlog
, "\n");
4484 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4488 fputc_unfiltered ('\n', gdb_stdlog
);
4494 debug_to_files_info (struct target_ops
*target
)
4496 debug_target
.to_files_info (target
);
4498 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4502 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
4503 struct bp_target_info
*bp_tgt
)
4507 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
4509 fprintf_unfiltered (gdb_stdlog
,
4510 "target_insert_breakpoint (%s, xxx) = %ld\n",
4511 core_addr_to_string (bp_tgt
->placed_address
),
4512 (unsigned long) retval
);
4517 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
4518 struct bp_target_info
*bp_tgt
)
4522 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
4524 fprintf_unfiltered (gdb_stdlog
,
4525 "target_remove_breakpoint (%s, xxx) = %ld\n",
4526 core_addr_to_string (bp_tgt
->placed_address
),
4527 (unsigned long) retval
);
4532 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
4536 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
4538 fprintf_unfiltered (gdb_stdlog
,
4539 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4540 (unsigned long) type
,
4541 (unsigned long) cnt
,
4542 (unsigned long) from_tty
,
4543 (unsigned long) retval
);
4548 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
4552 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
4554 fprintf_unfiltered (gdb_stdlog
,
4555 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4556 core_addr_to_string (addr
), (unsigned long) len
,
4557 core_addr_to_string (retval
));
4562 debug_to_can_accel_watchpoint_condition (CORE_ADDR addr
, int len
, int rw
,
4563 struct expression
*cond
)
4567 retval
= debug_target
.to_can_accel_watchpoint_condition (addr
, len
,
4570 fprintf_unfiltered (gdb_stdlog
,
4571 "target_can_accel_watchpoint_condition "
4572 "(%s, %d, %d, %s) = %ld\n",
4573 core_addr_to_string (addr
), len
, rw
,
4574 host_address_to_string (cond
), (unsigned long) retval
);
4579 debug_to_stopped_by_watchpoint (void)
4583 retval
= debug_target
.to_stopped_by_watchpoint ();
4585 fprintf_unfiltered (gdb_stdlog
,
4586 "target_stopped_by_watchpoint () = %ld\n",
4587 (unsigned long) retval
);
4592 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4596 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4598 fprintf_unfiltered (gdb_stdlog
,
4599 "target_stopped_data_address ([%s]) = %ld\n",
4600 core_addr_to_string (*addr
),
4601 (unsigned long)retval
);
4606 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4608 CORE_ADDR start
, int length
)
4612 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4615 fprintf_filtered (gdb_stdlog
,
4616 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4617 core_addr_to_string (addr
), core_addr_to_string (start
),
4623 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
4624 struct bp_target_info
*bp_tgt
)
4628 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
4630 fprintf_unfiltered (gdb_stdlog
,
4631 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4632 core_addr_to_string (bp_tgt
->placed_address
),
4633 (unsigned long) retval
);
4638 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
4639 struct bp_target_info
*bp_tgt
)
4643 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
4645 fprintf_unfiltered (gdb_stdlog
,
4646 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4647 core_addr_to_string (bp_tgt
->placed_address
),
4648 (unsigned long) retval
);
4653 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
4654 struct expression
*cond
)
4658 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
, cond
);
4660 fprintf_unfiltered (gdb_stdlog
,
4661 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4662 core_addr_to_string (addr
), len
, type
,
4663 host_address_to_string (cond
), (unsigned long) retval
);
4668 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
4669 struct expression
*cond
)
4673 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
, cond
);
4675 fprintf_unfiltered (gdb_stdlog
,
4676 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4677 core_addr_to_string (addr
), len
, type
,
4678 host_address_to_string (cond
), (unsigned long) retval
);
4683 debug_to_terminal_init (void)
4685 debug_target
.to_terminal_init ();
4687 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4691 debug_to_terminal_inferior (void)
4693 debug_target
.to_terminal_inferior ();
4695 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4699 debug_to_terminal_ours_for_output (void)
4701 debug_target
.to_terminal_ours_for_output ();
4703 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4707 debug_to_terminal_ours (void)
4709 debug_target
.to_terminal_ours ();
4711 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4715 debug_to_terminal_save_ours (void)
4717 debug_target
.to_terminal_save_ours ();
4719 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4723 debug_to_terminal_info (const char *arg
, int from_tty
)
4725 debug_target
.to_terminal_info (arg
, from_tty
);
4727 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4732 debug_to_load (char *args
, int from_tty
)
4734 debug_target
.to_load (args
, from_tty
);
4736 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4740 debug_to_post_startup_inferior (ptid_t ptid
)
4742 debug_target
.to_post_startup_inferior (ptid
);
4744 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4745 ptid_get_pid (ptid
));
4749 debug_to_insert_fork_catchpoint (int pid
)
4753 retval
= debug_target
.to_insert_fork_catchpoint (pid
);
4755 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4762 debug_to_remove_fork_catchpoint (int pid
)
4766 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
4768 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4775 debug_to_insert_vfork_catchpoint (int pid
)
4779 retval
= debug_target
.to_insert_vfork_catchpoint (pid
);
4781 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4788 debug_to_remove_vfork_catchpoint (int pid
)
4792 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
4794 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4801 debug_to_insert_exec_catchpoint (int pid
)
4805 retval
= debug_target
.to_insert_exec_catchpoint (pid
);
4807 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4814 debug_to_remove_exec_catchpoint (int pid
)
4818 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
4820 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4827 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
4831 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
4833 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4834 pid
, wait_status
, *exit_status
, has_exited
);
4840 debug_to_can_run (void)
4844 retval
= debug_target
.to_can_run ();
4846 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4851 static struct gdbarch
*
4852 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4854 struct gdbarch
*retval
;
4856 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4858 fprintf_unfiltered (gdb_stdlog
,
4859 "target_thread_architecture (%s) = %s [%s]\n",
4860 target_pid_to_str (ptid
),
4861 host_address_to_string (retval
),
4862 gdbarch_bfd_arch_info (retval
)->printable_name
);
4867 debug_to_stop (ptid_t ptid
)
4869 debug_target
.to_stop (ptid
);
4871 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4872 target_pid_to_str (ptid
));
4876 debug_to_rcmd (char *command
,
4877 struct ui_file
*outbuf
)
4879 debug_target
.to_rcmd (command
, outbuf
);
4880 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4884 debug_to_pid_to_exec_file (int pid
)
4888 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
4890 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4897 setup_target_debug (void)
4899 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4901 current_target
.to_open
= debug_to_open
;
4902 current_target
.to_post_attach
= debug_to_post_attach
;
4903 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4904 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4905 current_target
.to_files_info
= debug_to_files_info
;
4906 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4907 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4908 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4909 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4910 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4911 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4912 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4913 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4914 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4915 current_target
.to_watchpoint_addr_within_range
4916 = debug_to_watchpoint_addr_within_range
;
4917 current_target
.to_region_ok_for_hw_watchpoint
4918 = debug_to_region_ok_for_hw_watchpoint
;
4919 current_target
.to_can_accel_watchpoint_condition
4920 = debug_to_can_accel_watchpoint_condition
;
4921 current_target
.to_terminal_init
= debug_to_terminal_init
;
4922 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4923 current_target
.to_terminal_ours_for_output
4924 = debug_to_terminal_ours_for_output
;
4925 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4926 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4927 current_target
.to_terminal_info
= debug_to_terminal_info
;
4928 current_target
.to_load
= debug_to_load
;
4929 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4930 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4931 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4932 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4933 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4934 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4935 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4936 current_target
.to_has_exited
= debug_to_has_exited
;
4937 current_target
.to_can_run
= debug_to_can_run
;
4938 current_target
.to_stop
= debug_to_stop
;
4939 current_target
.to_rcmd
= debug_to_rcmd
;
4940 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4941 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4945 static char targ_desc
[] =
4946 "Names of targets and files being debugged.\nShows the entire \
4947 stack of targets currently in use (including the exec-file,\n\
4948 core-file, and process, if any), as well as the symbol file name.";
4951 do_monitor_command (char *cmd
,
4954 if ((current_target
.to_rcmd
4955 == (void (*) (char *, struct ui_file
*)) tcomplain
)
4956 || (current_target
.to_rcmd
== debug_to_rcmd
4957 && (debug_target
.to_rcmd
4958 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
4959 error (_("\"monitor\" command not supported by this target."));
4960 target_rcmd (cmd
, gdb_stdtarg
);
4963 /* Print the name of each layers of our target stack. */
4966 maintenance_print_target_stack (char *cmd
, int from_tty
)
4968 struct target_ops
*t
;
4970 printf_filtered (_("The current target stack is:\n"));
4972 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4974 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4978 /* Controls if async mode is permitted. */
4979 int target_async_permitted
= 0;
4981 /* The set command writes to this variable. If the inferior is
4982 executing, target_async_permitted is *not* updated. */
4983 static int target_async_permitted_1
= 0;
4986 set_target_async_command (char *args
, int from_tty
,
4987 struct cmd_list_element
*c
)
4989 if (have_live_inferiors ())
4991 target_async_permitted_1
= target_async_permitted
;
4992 error (_("Cannot change this setting while the inferior is running."));
4995 target_async_permitted
= target_async_permitted_1
;
4999 show_target_async_command (struct ui_file
*file
, int from_tty
,
5000 struct cmd_list_element
*c
,
5003 fprintf_filtered (file
,
5004 _("Controlling the inferior in "
5005 "asynchronous mode is %s.\n"), value
);
5008 /* Temporary copies of permission settings. */
5010 static int may_write_registers_1
= 1;
5011 static int may_write_memory_1
= 1;
5012 static int may_insert_breakpoints_1
= 1;
5013 static int may_insert_tracepoints_1
= 1;
5014 static int may_insert_fast_tracepoints_1
= 1;
5015 static int may_stop_1
= 1;
5017 /* Make the user-set values match the real values again. */
5020 update_target_permissions (void)
5022 may_write_registers_1
= may_write_registers
;
5023 may_write_memory_1
= may_write_memory
;
5024 may_insert_breakpoints_1
= may_insert_breakpoints
;
5025 may_insert_tracepoints_1
= may_insert_tracepoints
;
5026 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
5027 may_stop_1
= may_stop
;
5030 /* The one function handles (most of) the permission flags in the same
5034 set_target_permissions (char *args
, int from_tty
,
5035 struct cmd_list_element
*c
)
5037 if (target_has_execution
)
5039 update_target_permissions ();
5040 error (_("Cannot change this setting while the inferior is running."));
5043 /* Make the real values match the user-changed values. */
5044 may_write_registers
= may_write_registers_1
;
5045 may_insert_breakpoints
= may_insert_breakpoints_1
;
5046 may_insert_tracepoints
= may_insert_tracepoints_1
;
5047 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
5048 may_stop
= may_stop_1
;
5049 update_observer_mode ();
5052 /* Set memory write permission independently of observer mode. */
5055 set_write_memory_permission (char *args
, int from_tty
,
5056 struct cmd_list_element
*c
)
5058 /* Make the real values match the user-changed values. */
5059 may_write_memory
= may_write_memory_1
;
5060 update_observer_mode ();
5065 initialize_targets (void)
5067 init_dummy_target ();
5068 push_target (&dummy_target
);
5070 add_info ("target", target_info
, targ_desc
);
5071 add_info ("files", target_info
, targ_desc
);
5073 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
5074 Set target debugging."), _("\
5075 Show target debugging."), _("\
5076 When non-zero, target debugging is enabled. Higher numbers are more\n\
5077 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
5081 &setdebuglist
, &showdebuglist
);
5083 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
5084 &trust_readonly
, _("\
5085 Set mode for reading from readonly sections."), _("\
5086 Show mode for reading from readonly sections."), _("\
5087 When this mode is on, memory reads from readonly sections (such as .text)\n\
5088 will be read from the object file instead of from the target. This will\n\
5089 result in significant performance improvement for remote targets."),
5091 show_trust_readonly
,
5092 &setlist
, &showlist
);
5094 add_com ("monitor", class_obscure
, do_monitor_command
,
5095 _("Send a command to the remote monitor (remote targets only)."));
5097 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5098 _("Print the name of each layer of the internal target stack."),
5099 &maintenanceprintlist
);
5101 add_setshow_boolean_cmd ("target-async", no_class
,
5102 &target_async_permitted_1
, _("\
5103 Set whether gdb controls the inferior in asynchronous mode."), _("\
5104 Show whether gdb controls the inferior in asynchronous mode."), _("\
5105 Tells gdb whether to control the inferior in asynchronous mode."),
5106 set_target_async_command
,
5107 show_target_async_command
,
5111 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5112 &may_write_registers_1
, _("\
5113 Set permission to write into registers."), _("\
5114 Show permission to write into registers."), _("\
5115 When this permission is on, GDB may write into the target's registers.\n\
5116 Otherwise, any sort of write attempt will result in an error."),
5117 set_target_permissions
, NULL
,
5118 &setlist
, &showlist
);
5120 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5121 &may_write_memory_1
, _("\
5122 Set permission to write into target memory."), _("\
5123 Show permission to write into target memory."), _("\
5124 When this permission is on, GDB may write into the target's memory.\n\
5125 Otherwise, any sort of write attempt will result in an error."),
5126 set_write_memory_permission
, NULL
,
5127 &setlist
, &showlist
);
5129 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5130 &may_insert_breakpoints_1
, _("\
5131 Set permission to insert breakpoints in the target."), _("\
5132 Show permission to insert breakpoints in the target."), _("\
5133 When this permission is on, GDB may insert breakpoints in the program.\n\
5134 Otherwise, any sort of insertion attempt will result in an error."),
5135 set_target_permissions
, NULL
,
5136 &setlist
, &showlist
);
5138 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5139 &may_insert_tracepoints_1
, _("\
5140 Set permission to insert tracepoints in the target."), _("\
5141 Show permission to insert tracepoints in the target."), _("\
5142 When this permission is on, GDB may insert tracepoints in the program.\n\
5143 Otherwise, any sort of insertion attempt will result in an error."),
5144 set_target_permissions
, NULL
,
5145 &setlist
, &showlist
);
5147 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5148 &may_insert_fast_tracepoints_1
, _("\
5149 Set permission to insert fast tracepoints in the target."), _("\
5150 Show permission to insert fast tracepoints in the target."), _("\
5151 When this permission is on, GDB may insert fast tracepoints.\n\
5152 Otherwise, any sort of insertion attempt will result in an error."),
5153 set_target_permissions
, NULL
,
5154 &setlist
, &showlist
);
5156 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5158 Set permission to interrupt or signal the target."), _("\
5159 Show permission to interrupt or signal the target."), _("\
5160 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5161 Otherwise, any attempt to interrupt or stop will be ignored."),
5162 set_target_permissions
, NULL
,
5163 &setlist
, &showlist
);