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 () && object
== TARGET_OBJECT_STACK_MEMORY
)))
1552 DCACHE
*dcache
= target_dcache_get_or_init ();
1554 if (readbuf
!= NULL
)
1555 res
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1557 /* FIXME drow/2006-08-09: If we're going to preserve const
1558 correctness dcache_xfer_memory should take readbuf and
1560 res
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1568 /* If none of those methods found the memory we wanted, fall back
1569 to a target partial transfer. Normally a single call to
1570 to_xfer_partial is enough; if it doesn't recognize an object
1571 it will call the to_xfer_partial of the next target down.
1572 But for memory this won't do. Memory is the only target
1573 object which can be read from more than one valid target.
1574 A core file, for instance, could have some of memory but
1575 delegate other bits to the target below it. So, we must
1576 manually try all targets. */
1580 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1581 readbuf
, writebuf
, memaddr
, reg_len
);
1585 /* We want to continue past core files to executables, but not
1586 past a running target's memory. */
1587 if (ops
->to_has_all_memory (ops
))
1592 while (ops
!= NULL
);
1594 /* Make sure the cache gets updated no matter what - if we are writing
1595 to the stack. Even if this write is not tagged as such, we still need
1596 to update the cache. */
1601 && target_dcache_init_p ()
1602 && !region
->attrib
.cache
1603 && stack_cache_enabled ()
1604 && object
!= TARGET_OBJECT_STACK_MEMORY
)
1606 DCACHE
*dcache
= target_dcache_get ();
1608 dcache_update (dcache
, memaddr
, (void *) writebuf
, res
);
1611 /* If we still haven't got anything, return the last error. We
1616 /* Perform a partial memory transfer. For docs see target.h,
1620 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1621 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1626 /* Zero length requests are ok and require no work. */
1630 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1631 breakpoint insns, thus hiding out from higher layers whether
1632 there are software breakpoints inserted in the code stream. */
1633 if (readbuf
!= NULL
)
1635 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
);
1637 if (res
> 0 && !show_memory_breakpoints
)
1638 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1643 struct cleanup
*old_chain
;
1645 /* A large write request is likely to be partially satisfied
1646 by memory_xfer_partial_1. We will continually malloc
1647 and free a copy of the entire write request for breakpoint
1648 shadow handling even though we only end up writing a small
1649 subset of it. Cap writes to 4KB to mitigate this. */
1650 len
= min (4096, len
);
1652 buf
= xmalloc (len
);
1653 old_chain
= make_cleanup (xfree
, buf
);
1654 memcpy (buf
, writebuf
, len
);
1656 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1657 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
);
1659 do_cleanups (old_chain
);
1666 restore_show_memory_breakpoints (void *arg
)
1668 show_memory_breakpoints
= (uintptr_t) arg
;
1672 make_show_memory_breakpoints_cleanup (int show
)
1674 int current
= show_memory_breakpoints
;
1676 show_memory_breakpoints
= show
;
1677 return make_cleanup (restore_show_memory_breakpoints
,
1678 (void *) (uintptr_t) current
);
1681 /* For docs see target.h, to_xfer_partial. */
1684 target_xfer_partial (struct target_ops
*ops
,
1685 enum target_object object
, const char *annex
,
1686 void *readbuf
, const void *writebuf
,
1687 ULONGEST offset
, LONGEST len
)
1691 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1693 if (writebuf
&& !may_write_memory
)
1694 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1695 core_addr_to_string_nz (offset
), plongest (len
));
1697 /* If this is a memory transfer, let the memory-specific code
1698 have a look at it instead. Memory transfers are more
1700 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
)
1701 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1702 writebuf
, offset
, len
);
1705 enum target_object raw_object
= object
;
1707 /* If this is a raw memory transfer, request the normal
1708 memory object from other layers. */
1709 if (raw_object
== TARGET_OBJECT_RAW_MEMORY
)
1710 raw_object
= TARGET_OBJECT_MEMORY
;
1712 retval
= ops
->to_xfer_partial (ops
, raw_object
, annex
, readbuf
,
1713 writebuf
, offset
, len
);
1718 const unsigned char *myaddr
= NULL
;
1720 fprintf_unfiltered (gdb_stdlog
,
1721 "%s:target_xfer_partial "
1722 "(%d, %s, %s, %s, %s, %s) = %s",
1725 (annex
? annex
: "(null)"),
1726 host_address_to_string (readbuf
),
1727 host_address_to_string (writebuf
),
1728 core_addr_to_string_nz (offset
),
1729 plongest (len
), plongest (retval
));
1735 if (retval
> 0 && myaddr
!= NULL
)
1739 fputs_unfiltered (", bytes =", gdb_stdlog
);
1740 for (i
= 0; i
< retval
; i
++)
1742 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1744 if (targetdebug
< 2 && i
> 0)
1746 fprintf_unfiltered (gdb_stdlog
, " ...");
1749 fprintf_unfiltered (gdb_stdlog
, "\n");
1752 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1756 fputc_unfiltered ('\n', gdb_stdlog
);
1761 /* Read LEN bytes of target memory at address MEMADDR, placing the
1762 results in GDB's memory at MYADDR. Returns either 0 for success or
1763 a target_xfer_error value if any error occurs.
1765 If an error occurs, no guarantee is made about the contents of the data at
1766 MYADDR. In particular, the caller should not depend upon partial reads
1767 filling the buffer with good data. There is no way for the caller to know
1768 how much good data might have been transfered anyway. Callers that can
1769 deal with partial reads should call target_read (which will retry until
1770 it makes no progress, and then return how much was transferred). */
1773 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1775 /* Dispatch to the topmost target, not the flattened current_target.
1776 Memory accesses check target->to_has_(all_)memory, and the
1777 flattened target doesn't inherit those. */
1778 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1779 myaddr
, memaddr
, len
) == len
)
1782 return TARGET_XFER_E_IO
;
1785 /* Like target_read_memory, but specify explicitly that this is a read from
1786 the target's stack. This may trigger different cache behavior. */
1789 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1791 /* Dispatch to the topmost target, not the flattened current_target.
1792 Memory accesses check target->to_has_(all_)memory, and the
1793 flattened target doesn't inherit those. */
1795 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1796 myaddr
, memaddr
, len
) == len
)
1799 return TARGET_XFER_E_IO
;
1802 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1803 Returns either 0 for success or a target_xfer_error value if any
1804 error occurs. If an error occurs, no guarantee is made about how
1805 much data got written. Callers that can deal with partial writes
1806 should call target_write. */
1809 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1811 /* Dispatch to the topmost target, not the flattened current_target.
1812 Memory accesses check target->to_has_(all_)memory, and the
1813 flattened target doesn't inherit those. */
1814 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1815 myaddr
, memaddr
, len
) == len
)
1818 return TARGET_XFER_E_IO
;
1821 /* Write LEN bytes from MYADDR to target raw memory at address
1822 MEMADDR. Returns either 0 for success or a target_xfer_error value
1823 if any error occurs. If an error occurs, no guarantee is made
1824 about how much data got written. Callers that can deal with
1825 partial writes should call target_write. */
1828 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1830 /* Dispatch to the topmost target, not the flattened current_target.
1831 Memory accesses check target->to_has_(all_)memory, and the
1832 flattened target doesn't inherit those. */
1833 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1834 myaddr
, memaddr
, len
) == len
)
1837 return TARGET_XFER_E_IO
;
1840 /* Fetch the target's memory map. */
1843 target_memory_map (void)
1845 VEC(mem_region_s
) *result
;
1846 struct mem_region
*last_one
, *this_one
;
1848 struct target_ops
*t
;
1851 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1853 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1854 if (t
->to_memory_map
!= NULL
)
1860 result
= t
->to_memory_map (t
);
1864 qsort (VEC_address (mem_region_s
, result
),
1865 VEC_length (mem_region_s
, result
),
1866 sizeof (struct mem_region
), mem_region_cmp
);
1868 /* Check that regions do not overlap. Simultaneously assign
1869 a numbering for the "mem" commands to use to refer to
1872 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1874 this_one
->number
= ix
;
1876 if (last_one
&& last_one
->hi
> this_one
->lo
)
1878 warning (_("Overlapping regions in memory map: ignoring"));
1879 VEC_free (mem_region_s
, result
);
1882 last_one
= this_one
;
1889 target_flash_erase (ULONGEST address
, LONGEST length
)
1891 struct target_ops
*t
;
1893 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1894 if (t
->to_flash_erase
!= NULL
)
1897 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1898 hex_string (address
), phex (length
, 0));
1899 t
->to_flash_erase (t
, address
, length
);
1907 target_flash_done (void)
1909 struct target_ops
*t
;
1911 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1912 if (t
->to_flash_done
!= NULL
)
1915 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1916 t
->to_flash_done (t
);
1924 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1925 struct cmd_list_element
*c
, const char *value
)
1927 fprintf_filtered (file
,
1928 _("Mode for reading from readonly sections is %s.\n"),
1932 /* More generic transfers. */
1935 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1936 const char *annex
, gdb_byte
*readbuf
,
1937 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1939 if (object
== TARGET_OBJECT_MEMORY
1940 && ops
->deprecated_xfer_memory
!= NULL
)
1941 /* If available, fall back to the target's
1942 "deprecated_xfer_memory" method. */
1947 if (writebuf
!= NULL
)
1949 void *buffer
= xmalloc (len
);
1950 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1952 memcpy (buffer
, writebuf
, len
);
1953 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1954 1/*write*/, NULL
, ops
);
1955 do_cleanups (cleanup
);
1957 if (readbuf
!= NULL
)
1958 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1959 0/*read*/, NULL
, ops
);
1962 else if (xfered
== 0 && errno
== 0)
1963 /* "deprecated_xfer_memory" uses 0, cross checked against
1964 ERRNO as one indication of an error. */
1969 else if (ops
->beneath
!= NULL
)
1970 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1971 readbuf
, writebuf
, offset
, len
);
1976 /* The xfer_partial handler for the topmost target. Unlike the default,
1977 it does not need to handle memory specially; it just passes all
1978 requests down the stack. */
1981 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1982 const char *annex
, gdb_byte
*readbuf
,
1983 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1985 if (ops
->beneath
!= NULL
)
1986 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1987 readbuf
, writebuf
, offset
, len
);
1992 /* Target vector read/write partial wrapper functions. */
1995 target_read_partial (struct target_ops
*ops
,
1996 enum target_object object
,
1997 const char *annex
, gdb_byte
*buf
,
1998 ULONGEST offset
, LONGEST len
)
2000 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
2004 target_write_partial (struct target_ops
*ops
,
2005 enum target_object object
,
2006 const char *annex
, const gdb_byte
*buf
,
2007 ULONGEST offset
, LONGEST len
)
2009 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
2012 /* Wrappers to perform the full transfer. */
2014 /* For docs on target_read see target.h. */
2017 target_read (struct target_ops
*ops
,
2018 enum target_object object
,
2019 const char *annex
, gdb_byte
*buf
,
2020 ULONGEST offset
, LONGEST len
)
2024 while (xfered
< len
)
2026 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
2027 (gdb_byte
*) buf
+ xfered
,
2028 offset
+ xfered
, len
- xfered
);
2030 /* Call an observer, notifying them of the xfer progress? */
2041 /* Assuming that the entire [begin, end) range of memory cannot be
2042 read, try to read whatever subrange is possible to read.
2044 The function returns, in RESULT, either zero or one memory block.
2045 If there's a readable subrange at the beginning, it is completely
2046 read and returned. Any further readable subrange will not be read.
2047 Otherwise, if there's a readable subrange at the end, it will be
2048 completely read and returned. Any readable subranges before it
2049 (obviously, not starting at the beginning), will be ignored. In
2050 other cases -- either no readable subrange, or readable subrange(s)
2051 that is neither at the beginning, or end, nothing is returned.
2053 The purpose of this function is to handle a read across a boundary
2054 of accessible memory in a case when memory map is not available.
2055 The above restrictions are fine for this case, but will give
2056 incorrect results if the memory is 'patchy'. However, supporting
2057 'patchy' memory would require trying to read every single byte,
2058 and it seems unacceptable solution. Explicit memory map is
2059 recommended for this case -- and target_read_memory_robust will
2060 take care of reading multiple ranges then. */
2063 read_whatever_is_readable (struct target_ops
*ops
,
2064 ULONGEST begin
, ULONGEST end
,
2065 VEC(memory_read_result_s
) **result
)
2067 gdb_byte
*buf
= xmalloc (end
- begin
);
2068 ULONGEST current_begin
= begin
;
2069 ULONGEST current_end
= end
;
2071 memory_read_result_s r
;
2073 /* If we previously failed to read 1 byte, nothing can be done here. */
2074 if (end
- begin
<= 1)
2080 /* Check that either first or the last byte is readable, and give up
2081 if not. This heuristic is meant to permit reading accessible memory
2082 at the boundary of accessible region. */
2083 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2084 buf
, begin
, 1) == 1)
2089 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2090 buf
+ (end
-begin
) - 1, end
- 1, 1) == 1)
2101 /* Loop invariant is that the [current_begin, current_end) was previously
2102 found to be not readable as a whole.
2104 Note loop condition -- if the range has 1 byte, we can't divide the range
2105 so there's no point trying further. */
2106 while (current_end
- current_begin
> 1)
2108 ULONGEST first_half_begin
, first_half_end
;
2109 ULONGEST second_half_begin
, second_half_end
;
2111 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2115 first_half_begin
= current_begin
;
2116 first_half_end
= middle
;
2117 second_half_begin
= middle
;
2118 second_half_end
= current_end
;
2122 first_half_begin
= middle
;
2123 first_half_end
= current_end
;
2124 second_half_begin
= current_begin
;
2125 second_half_end
= middle
;
2128 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2129 buf
+ (first_half_begin
- begin
),
2131 first_half_end
- first_half_begin
);
2133 if (xfer
== first_half_end
- first_half_begin
)
2135 /* This half reads up fine. So, the error must be in the
2137 current_begin
= second_half_begin
;
2138 current_end
= second_half_end
;
2142 /* This half is not readable. Because we've tried one byte, we
2143 know some part of this half if actually redable. Go to the next
2144 iteration to divide again and try to read.
2146 We don't handle the other half, because this function only tries
2147 to read a single readable subrange. */
2148 current_begin
= first_half_begin
;
2149 current_end
= first_half_end
;
2155 /* The [begin, current_begin) range has been read. */
2157 r
.end
= current_begin
;
2162 /* The [current_end, end) range has been read. */
2163 LONGEST rlen
= end
- current_end
;
2165 r
.data
= xmalloc (rlen
);
2166 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2167 r
.begin
= current_end
;
2171 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2175 free_memory_read_result_vector (void *x
)
2177 VEC(memory_read_result_s
) *v
= x
;
2178 memory_read_result_s
*current
;
2181 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2183 xfree (current
->data
);
2185 VEC_free (memory_read_result_s
, v
);
2188 VEC(memory_read_result_s
) *
2189 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2191 VEC(memory_read_result_s
) *result
= 0;
2194 while (xfered
< len
)
2196 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2199 /* If there is no explicit region, a fake one should be created. */
2200 gdb_assert (region
);
2202 if (region
->hi
== 0)
2203 rlen
= len
- xfered
;
2205 rlen
= region
->hi
- offset
;
2207 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2209 /* Cannot read this region. Note that we can end up here only
2210 if the region is explicitly marked inaccessible, or
2211 'inaccessible-by-default' is in effect. */
2216 LONGEST to_read
= min (len
- xfered
, rlen
);
2217 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2219 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2220 (gdb_byte
*) buffer
,
2221 offset
+ xfered
, to_read
);
2222 /* Call an observer, notifying them of the xfer progress? */
2225 /* Got an error reading full chunk. See if maybe we can read
2228 read_whatever_is_readable (ops
, offset
+ xfered
,
2229 offset
+ xfered
+ to_read
, &result
);
2234 struct memory_read_result r
;
2236 r
.begin
= offset
+ xfered
;
2237 r
.end
= r
.begin
+ xfer
;
2238 VEC_safe_push (memory_read_result_s
, result
, &r
);
2248 /* An alternative to target_write with progress callbacks. */
2251 target_write_with_progress (struct target_ops
*ops
,
2252 enum target_object object
,
2253 const char *annex
, const gdb_byte
*buf
,
2254 ULONGEST offset
, LONGEST len
,
2255 void (*progress
) (ULONGEST
, void *), void *baton
)
2259 /* Give the progress callback a chance to set up. */
2261 (*progress
) (0, baton
);
2263 while (xfered
< len
)
2265 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
2266 (gdb_byte
*) buf
+ xfered
,
2267 offset
+ xfered
, len
- xfered
);
2275 (*progress
) (xfer
, baton
);
2283 /* For docs on target_write see target.h. */
2286 target_write (struct target_ops
*ops
,
2287 enum target_object object
,
2288 const char *annex
, const gdb_byte
*buf
,
2289 ULONGEST offset
, LONGEST len
)
2291 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2295 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2296 the size of the transferred data. PADDING additional bytes are
2297 available in *BUF_P. This is a helper function for
2298 target_read_alloc; see the declaration of that function for more
2302 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2303 const char *annex
, gdb_byte
**buf_p
, int padding
)
2305 size_t buf_alloc
, buf_pos
;
2309 /* This function does not have a length parameter; it reads the
2310 entire OBJECT). Also, it doesn't support objects fetched partly
2311 from one target and partly from another (in a different stratum,
2312 e.g. a core file and an executable). Both reasons make it
2313 unsuitable for reading memory. */
2314 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2316 /* Start by reading up to 4K at a time. The target will throttle
2317 this number down if necessary. */
2319 buf
= xmalloc (buf_alloc
);
2323 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2324 buf_pos
, buf_alloc
- buf_pos
- padding
);
2327 /* An error occurred. */
2333 /* Read all there was. */
2343 /* If the buffer is filling up, expand it. */
2344 if (buf_alloc
< buf_pos
* 2)
2347 buf
= xrealloc (buf
, buf_alloc
);
2354 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2355 the size of the transferred data. See the declaration in "target.h"
2356 function for more information about the return value. */
2359 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2360 const char *annex
, gdb_byte
**buf_p
)
2362 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2365 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2366 returned as a string, allocated using xmalloc. If an error occurs
2367 or the transfer is unsupported, NULL is returned. Empty objects
2368 are returned as allocated but empty strings. A warning is issued
2369 if the result contains any embedded NUL bytes. */
2372 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2377 LONGEST i
, transferred
;
2379 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2380 bufstr
= (char *) buffer
;
2382 if (transferred
< 0)
2385 if (transferred
== 0)
2386 return xstrdup ("");
2388 bufstr
[transferred
] = 0;
2390 /* Check for embedded NUL bytes; but allow trailing NULs. */
2391 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2394 warning (_("target object %d, annex %s, "
2395 "contained unexpected null characters"),
2396 (int) object
, annex
? annex
: "(none)");
2403 /* Memory transfer methods. */
2406 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2409 /* This method is used to read from an alternate, non-current
2410 target. This read must bypass the overlay support (as symbols
2411 don't match this target), and GDB's internal cache (wrong cache
2412 for this target). */
2413 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2415 memory_error (TARGET_XFER_E_IO
, addr
);
2419 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2420 int len
, enum bfd_endian byte_order
)
2422 gdb_byte buf
[sizeof (ULONGEST
)];
2424 gdb_assert (len
<= sizeof (buf
));
2425 get_target_memory (ops
, addr
, buf
, len
);
2426 return extract_unsigned_integer (buf
, len
, byte_order
);
2430 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2431 struct bp_target_info
*bp_tgt
)
2433 if (!may_insert_breakpoints
)
2435 warning (_("May not insert breakpoints"));
2439 return (*current_target
.to_insert_breakpoint
) (gdbarch
, bp_tgt
);
2443 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2444 struct bp_target_info
*bp_tgt
)
2446 /* This is kind of a weird case to handle, but the permission might
2447 have been changed after breakpoints were inserted - in which case
2448 we should just take the user literally and assume that any
2449 breakpoints should be left in place. */
2450 if (!may_insert_breakpoints
)
2452 warning (_("May not remove breakpoints"));
2456 return (*current_target
.to_remove_breakpoint
) (gdbarch
, bp_tgt
);
2460 target_info (char *args
, int from_tty
)
2462 struct target_ops
*t
;
2463 int has_all_mem
= 0;
2465 if (symfile_objfile
!= NULL
)
2466 printf_unfiltered (_("Symbols from \"%s\".\n"),
2467 objfile_name (symfile_objfile
));
2469 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2471 if (!(*t
->to_has_memory
) (t
))
2474 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2477 printf_unfiltered (_("\tWhile running this, "
2478 "GDB does not access memory from...\n"));
2479 printf_unfiltered ("%s:\n", t
->to_longname
);
2480 (t
->to_files_info
) (t
);
2481 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2485 /* This function is called before any new inferior is created, e.g.
2486 by running a program, attaching, or connecting to a target.
2487 It cleans up any state from previous invocations which might
2488 change between runs. This is a subset of what target_preopen
2489 resets (things which might change between targets). */
2492 target_pre_inferior (int from_tty
)
2494 /* Clear out solib state. Otherwise the solib state of the previous
2495 inferior might have survived and is entirely wrong for the new
2496 target. This has been observed on GNU/Linux using glibc 2.3. How
2508 Cannot access memory at address 0xdeadbeef
2511 /* In some OSs, the shared library list is the same/global/shared
2512 across inferiors. If code is shared between processes, so are
2513 memory regions and features. */
2514 if (!gdbarch_has_global_solist (target_gdbarch ()))
2516 no_shared_libraries (NULL
, from_tty
);
2518 invalidate_target_mem_regions ();
2520 target_clear_description ();
2523 agent_capability_invalidate ();
2526 /* Callback for iterate_over_inferiors. Gets rid of the given
2530 dispose_inferior (struct inferior
*inf
, void *args
)
2532 struct thread_info
*thread
;
2534 thread
= any_thread_of_process (inf
->pid
);
2537 switch_to_thread (thread
->ptid
);
2539 /* Core inferiors actually should be detached, not killed. */
2540 if (target_has_execution
)
2543 target_detach (NULL
, 0);
2549 /* This is to be called by the open routine before it does
2553 target_preopen (int from_tty
)
2557 if (have_inferiors ())
2560 || !have_live_inferiors ()
2561 || query (_("A program is being debugged already. Kill it? ")))
2562 iterate_over_inferiors (dispose_inferior
, NULL
);
2564 error (_("Program not killed."));
2567 /* Calling target_kill may remove the target from the stack. But if
2568 it doesn't (which seems like a win for UDI), remove it now. */
2569 /* Leave the exec target, though. The user may be switching from a
2570 live process to a core of the same program. */
2571 pop_all_targets_above (file_stratum
);
2573 target_pre_inferior (from_tty
);
2576 /* Detach a target after doing deferred register stores. */
2579 target_detach (const char *args
, int from_tty
)
2581 struct target_ops
* t
;
2583 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2584 /* Don't remove global breakpoints here. They're removed on
2585 disconnection from the target. */
2588 /* If we're in breakpoints-always-inserted mode, have to remove
2589 them before detaching. */
2590 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2592 prepare_for_detach ();
2594 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2596 if (t
->to_detach
!= NULL
)
2598 t
->to_detach (t
, args
, from_tty
);
2600 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2606 internal_error (__FILE__
, __LINE__
, _("could not find a target to detach"));
2610 target_disconnect (char *args
, int from_tty
)
2612 struct target_ops
*t
;
2614 /* If we're in breakpoints-always-inserted mode or if breakpoints
2615 are global across processes, we have to remove them before
2617 remove_breakpoints ();
2619 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2620 if (t
->to_disconnect
!= NULL
)
2623 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2625 t
->to_disconnect (t
, args
, from_tty
);
2633 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2635 struct target_ops
*t
;
2637 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2639 if (t
->to_wait
!= NULL
)
2641 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2645 char *status_string
;
2646 char *options_string
;
2648 status_string
= target_waitstatus_to_string (status
);
2649 options_string
= target_options_to_string (options
);
2650 fprintf_unfiltered (gdb_stdlog
,
2651 "target_wait (%d, status, options={%s})"
2653 ptid_get_pid (ptid
), options_string
,
2654 ptid_get_pid (retval
), status_string
);
2655 xfree (status_string
);
2656 xfree (options_string
);
2667 target_pid_to_str (ptid_t ptid
)
2669 struct target_ops
*t
;
2671 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2673 if (t
->to_pid_to_str
!= NULL
)
2674 return (*t
->to_pid_to_str
) (t
, ptid
);
2677 return normal_pid_to_str (ptid
);
2681 target_thread_name (struct thread_info
*info
)
2683 struct target_ops
*t
;
2685 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2687 if (t
->to_thread_name
!= NULL
)
2688 return (*t
->to_thread_name
) (info
);
2695 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2697 struct target_ops
*t
;
2699 target_dcache_invalidate ();
2701 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2703 if (t
->to_resume
!= NULL
)
2705 t
->to_resume (t
, ptid
, step
, signal
);
2707 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2708 ptid_get_pid (ptid
),
2709 step
? "step" : "continue",
2710 gdb_signal_to_name (signal
));
2712 registers_changed_ptid (ptid
);
2713 set_executing (ptid
, 1);
2714 set_running (ptid
, 1);
2715 clear_inline_frame_state (ptid
);
2724 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2726 struct target_ops
*t
;
2728 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2730 if (t
->to_pass_signals
!= NULL
)
2736 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2739 for (i
= 0; i
< numsigs
; i
++)
2740 if (pass_signals
[i
])
2741 fprintf_unfiltered (gdb_stdlog
, " %s",
2742 gdb_signal_to_name (i
));
2744 fprintf_unfiltered (gdb_stdlog
, " })\n");
2747 (*t
->to_pass_signals
) (numsigs
, pass_signals
);
2754 target_program_signals (int numsigs
, unsigned char *program_signals
)
2756 struct target_ops
*t
;
2758 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2760 if (t
->to_program_signals
!= NULL
)
2766 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2769 for (i
= 0; i
< numsigs
; i
++)
2770 if (program_signals
[i
])
2771 fprintf_unfiltered (gdb_stdlog
, " %s",
2772 gdb_signal_to_name (i
));
2774 fprintf_unfiltered (gdb_stdlog
, " })\n");
2777 (*t
->to_program_signals
) (numsigs
, program_signals
);
2783 /* Look through the list of possible targets for a target that can
2787 target_follow_fork (int follow_child
, int detach_fork
)
2789 struct target_ops
*t
;
2791 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2793 if (t
->to_follow_fork
!= NULL
)
2795 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2798 fprintf_unfiltered (gdb_stdlog
,
2799 "target_follow_fork (%d, %d) = %d\n",
2800 follow_child
, detach_fork
, retval
);
2805 /* Some target returned a fork event, but did not know how to follow it. */
2806 internal_error (__FILE__
, __LINE__
,
2807 _("could not find a target to follow fork"));
2811 target_mourn_inferior (void)
2813 struct target_ops
*t
;
2815 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2817 if (t
->to_mourn_inferior
!= NULL
)
2819 t
->to_mourn_inferior (t
);
2821 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2823 /* We no longer need to keep handles on any of the object files.
2824 Make sure to release them to avoid unnecessarily locking any
2825 of them while we're not actually debugging. */
2826 bfd_cache_close_all ();
2832 internal_error (__FILE__
, __LINE__
,
2833 _("could not find a target to follow mourn inferior"));
2836 /* Look for a target which can describe architectural features, starting
2837 from TARGET. If we find one, return its description. */
2839 const struct target_desc
*
2840 target_read_description (struct target_ops
*target
)
2842 struct target_ops
*t
;
2844 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2845 if (t
->to_read_description
!= NULL
)
2847 const struct target_desc
*tdesc
;
2849 tdesc
= t
->to_read_description (t
);
2857 /* The default implementation of to_search_memory.
2858 This implements a basic search of memory, reading target memory and
2859 performing the search here (as opposed to performing the search in on the
2860 target side with, for example, gdbserver). */
2863 simple_search_memory (struct target_ops
*ops
,
2864 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2865 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2866 CORE_ADDR
*found_addrp
)
2868 /* NOTE: also defined in find.c testcase. */
2869 #define SEARCH_CHUNK_SIZE 16000
2870 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2871 /* Buffer to hold memory contents for searching. */
2872 gdb_byte
*search_buf
;
2873 unsigned search_buf_size
;
2874 struct cleanup
*old_cleanups
;
2876 search_buf_size
= chunk_size
+ pattern_len
- 1;
2878 /* No point in trying to allocate a buffer larger than the search space. */
2879 if (search_space_len
< search_buf_size
)
2880 search_buf_size
= search_space_len
;
2882 search_buf
= malloc (search_buf_size
);
2883 if (search_buf
== NULL
)
2884 error (_("Unable to allocate memory to perform the search."));
2885 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2887 /* Prime the search buffer. */
2889 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2890 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2892 warning (_("Unable to access %s bytes of target "
2893 "memory at %s, halting search."),
2894 pulongest (search_buf_size
), hex_string (start_addr
));
2895 do_cleanups (old_cleanups
);
2899 /* Perform the search.
2901 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2902 When we've scanned N bytes we copy the trailing bytes to the start and
2903 read in another N bytes. */
2905 while (search_space_len
>= pattern_len
)
2907 gdb_byte
*found_ptr
;
2908 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2910 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2911 pattern
, pattern_len
);
2913 if (found_ptr
!= NULL
)
2915 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2917 *found_addrp
= found_addr
;
2918 do_cleanups (old_cleanups
);
2922 /* Not found in this chunk, skip to next chunk. */
2924 /* Don't let search_space_len wrap here, it's unsigned. */
2925 if (search_space_len
>= chunk_size
)
2926 search_space_len
-= chunk_size
;
2928 search_space_len
= 0;
2930 if (search_space_len
>= pattern_len
)
2932 unsigned keep_len
= search_buf_size
- chunk_size
;
2933 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2936 /* Copy the trailing part of the previous iteration to the front
2937 of the buffer for the next iteration. */
2938 gdb_assert (keep_len
== pattern_len
- 1);
2939 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2941 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2943 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2944 search_buf
+ keep_len
, read_addr
,
2945 nr_to_read
) != nr_to_read
)
2947 warning (_("Unable to access %s bytes of target "
2948 "memory at %s, halting search."),
2949 plongest (nr_to_read
),
2950 hex_string (read_addr
));
2951 do_cleanups (old_cleanups
);
2955 start_addr
+= chunk_size
;
2961 do_cleanups (old_cleanups
);
2965 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2966 sequence of bytes in PATTERN with length PATTERN_LEN.
2968 The result is 1 if found, 0 if not found, and -1 if there was an error
2969 requiring halting of the search (e.g. memory read error).
2970 If the pattern is found the address is recorded in FOUND_ADDRP. */
2973 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2974 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2975 CORE_ADDR
*found_addrp
)
2977 struct target_ops
*t
;
2980 /* We don't use INHERIT to set current_target.to_search_memory,
2981 so we have to scan the target stack and handle targetdebug
2985 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2986 hex_string (start_addr
));
2988 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2989 if (t
->to_search_memory
!= NULL
)
2994 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2995 pattern
, pattern_len
, found_addrp
);
2999 /* If a special version of to_search_memory isn't available, use the
3001 found
= simple_search_memory (current_target
.beneath
,
3002 start_addr
, search_space_len
,
3003 pattern
, pattern_len
, found_addrp
);
3007 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
3012 /* Look through the currently pushed targets. If none of them will
3013 be able to restart the currently running process, issue an error
3017 target_require_runnable (void)
3019 struct target_ops
*t
;
3021 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3023 /* If this target knows how to create a new program, then
3024 assume we will still be able to after killing the current
3025 one. Either killing and mourning will not pop T, or else
3026 find_default_run_target will find it again. */
3027 if (t
->to_create_inferior
!= NULL
)
3030 /* Do not worry about thread_stratum targets that can not
3031 create inferiors. Assume they will be pushed again if
3032 necessary, and continue to the process_stratum. */
3033 if (t
->to_stratum
== thread_stratum
3034 || t
->to_stratum
== arch_stratum
)
3037 error (_("The \"%s\" target does not support \"run\". "
3038 "Try \"help target\" or \"continue\"."),
3042 /* This function is only called if the target is running. In that
3043 case there should have been a process_stratum target and it
3044 should either know how to create inferiors, or not... */
3045 internal_error (__FILE__
, __LINE__
, _("No targets found"));
3048 /* Look through the list of possible targets for a target that can
3049 execute a run or attach command without any other data. This is
3050 used to locate the default process stratum.
3052 If DO_MESG is not NULL, the result is always valid (error() is
3053 called for errors); else, return NULL on error. */
3055 static struct target_ops
*
3056 find_default_run_target (char *do_mesg
)
3058 struct target_ops
**t
;
3059 struct target_ops
*runable
= NULL
;
3064 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3067 if ((*t
)->to_can_run
&& target_can_run (*t
))
3077 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3086 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3088 struct target_ops
*t
;
3090 t
= find_default_run_target ("attach");
3091 (t
->to_attach
) (t
, args
, from_tty
);
3096 find_default_create_inferior (struct target_ops
*ops
,
3097 char *exec_file
, char *allargs
, char **env
,
3100 struct target_ops
*t
;
3102 t
= find_default_run_target ("run");
3103 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3108 find_default_can_async_p (void)
3110 struct target_ops
*t
;
3112 /* This may be called before the target is pushed on the stack;
3113 look for the default process stratum. If there's none, gdb isn't
3114 configured with a native debugger, and target remote isn't
3116 t
= find_default_run_target (NULL
);
3117 if (t
&& t
->to_can_async_p
)
3118 return (t
->to_can_async_p
) ();
3123 find_default_is_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_is_async_p
)
3133 return (t
->to_is_async_p
) ();
3138 find_default_supports_non_stop (void)
3140 struct target_ops
*t
;
3142 t
= find_default_run_target (NULL
);
3143 if (t
&& t
->to_supports_non_stop
)
3144 return (t
->to_supports_non_stop
) ();
3149 target_supports_non_stop (void)
3151 struct target_ops
*t
;
3153 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3154 if (t
->to_supports_non_stop
)
3155 return t
->to_supports_non_stop ();
3160 /* Implement the "info proc" command. */
3163 target_info_proc (char *args
, enum info_proc_what what
)
3165 struct target_ops
*t
;
3167 /* If we're already connected to something that can get us OS
3168 related data, use it. Otherwise, try using the native
3170 if (current_target
.to_stratum
>= process_stratum
)
3171 t
= current_target
.beneath
;
3173 t
= find_default_run_target (NULL
);
3175 for (; t
!= NULL
; t
= t
->beneath
)
3177 if (t
->to_info_proc
!= NULL
)
3179 t
->to_info_proc (t
, args
, what
);
3182 fprintf_unfiltered (gdb_stdlog
,
3183 "target_info_proc (\"%s\", %d)\n", args
, what
);
3193 find_default_supports_disable_randomization (void)
3195 struct target_ops
*t
;
3197 t
= find_default_run_target (NULL
);
3198 if (t
&& t
->to_supports_disable_randomization
)
3199 return (t
->to_supports_disable_randomization
) ();
3204 target_supports_disable_randomization (void)
3206 struct target_ops
*t
;
3208 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3209 if (t
->to_supports_disable_randomization
)
3210 return t
->to_supports_disable_randomization ();
3216 target_get_osdata (const char *type
)
3218 struct target_ops
*t
;
3220 /* If we're already connected to something that can get us OS
3221 related data, use it. Otherwise, try using the native
3223 if (current_target
.to_stratum
>= process_stratum
)
3224 t
= current_target
.beneath
;
3226 t
= find_default_run_target ("get OS data");
3231 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3234 /* Determine the current address space of thread PTID. */
3236 struct address_space
*
3237 target_thread_address_space (ptid_t ptid
)
3239 struct address_space
*aspace
;
3240 struct inferior
*inf
;
3241 struct target_ops
*t
;
3243 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3245 if (t
->to_thread_address_space
!= NULL
)
3247 aspace
= t
->to_thread_address_space (t
, ptid
);
3248 gdb_assert (aspace
);
3251 fprintf_unfiltered (gdb_stdlog
,
3252 "target_thread_address_space (%s) = %d\n",
3253 target_pid_to_str (ptid
),
3254 address_space_num (aspace
));
3259 /* Fall-back to the "main" address space of the inferior. */
3260 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3262 if (inf
== NULL
|| inf
->aspace
== NULL
)
3263 internal_error (__FILE__
, __LINE__
,
3264 _("Can't determine the current "
3265 "address space of thread %s\n"),
3266 target_pid_to_str (ptid
));
3272 /* Target file operations. */
3274 static struct target_ops
*
3275 default_fileio_target (void)
3277 /* If we're already connected to something that can perform
3278 file I/O, use it. Otherwise, try using the native target. */
3279 if (current_target
.to_stratum
>= process_stratum
)
3280 return current_target
.beneath
;
3282 return find_default_run_target ("file I/O");
3285 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3286 target file descriptor, or -1 if an error occurs (and set
3289 target_fileio_open (const char *filename
, int flags
, int mode
,
3292 struct target_ops
*t
;
3294 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3296 if (t
->to_fileio_open
!= NULL
)
3298 int fd
= t
->to_fileio_open (filename
, flags
, mode
, target_errno
);
3301 fprintf_unfiltered (gdb_stdlog
,
3302 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3303 filename
, flags
, mode
,
3304 fd
, fd
!= -1 ? 0 : *target_errno
);
3309 *target_errno
= FILEIO_ENOSYS
;
3313 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3314 Return the number of bytes written, or -1 if an error occurs
3315 (and set *TARGET_ERRNO). */
3317 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3318 ULONGEST offset
, int *target_errno
)
3320 struct target_ops
*t
;
3322 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3324 if (t
->to_fileio_pwrite
!= NULL
)
3326 int ret
= t
->to_fileio_pwrite (fd
, write_buf
, len
, offset
,
3330 fprintf_unfiltered (gdb_stdlog
,
3331 "target_fileio_pwrite (%d,...,%d,%s) "
3333 fd
, len
, pulongest (offset
),
3334 ret
, ret
!= -1 ? 0 : *target_errno
);
3339 *target_errno
= FILEIO_ENOSYS
;
3343 /* Read up to LEN bytes FD on the target into READ_BUF.
3344 Return the number of bytes read, or -1 if an error occurs
3345 (and set *TARGET_ERRNO). */
3347 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3348 ULONGEST offset
, int *target_errno
)
3350 struct target_ops
*t
;
3352 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3354 if (t
->to_fileio_pread
!= NULL
)
3356 int ret
= t
->to_fileio_pread (fd
, read_buf
, len
, offset
,
3360 fprintf_unfiltered (gdb_stdlog
,
3361 "target_fileio_pread (%d,...,%d,%s) "
3363 fd
, len
, pulongest (offset
),
3364 ret
, ret
!= -1 ? 0 : *target_errno
);
3369 *target_errno
= FILEIO_ENOSYS
;
3373 /* Close FD on the target. Return 0, or -1 if an error occurs
3374 (and set *TARGET_ERRNO). */
3376 target_fileio_close (int fd
, int *target_errno
)
3378 struct target_ops
*t
;
3380 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3382 if (t
->to_fileio_close
!= NULL
)
3384 int ret
= t
->to_fileio_close (fd
, target_errno
);
3387 fprintf_unfiltered (gdb_stdlog
,
3388 "target_fileio_close (%d) = %d (%d)\n",
3389 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3394 *target_errno
= FILEIO_ENOSYS
;
3398 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3399 occurs (and set *TARGET_ERRNO). */
3401 target_fileio_unlink (const char *filename
, int *target_errno
)
3403 struct target_ops
*t
;
3405 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3407 if (t
->to_fileio_unlink
!= NULL
)
3409 int ret
= t
->to_fileio_unlink (filename
, target_errno
);
3412 fprintf_unfiltered (gdb_stdlog
,
3413 "target_fileio_unlink (%s) = %d (%d)\n",
3414 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3419 *target_errno
= FILEIO_ENOSYS
;
3423 /* Read value of symbolic link FILENAME on the target. Return a
3424 null-terminated string allocated via xmalloc, or NULL if an error
3425 occurs (and set *TARGET_ERRNO). */
3427 target_fileio_readlink (const char *filename
, int *target_errno
)
3429 struct target_ops
*t
;
3431 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3433 if (t
->to_fileio_readlink
!= NULL
)
3435 char *ret
= t
->to_fileio_readlink (filename
, target_errno
);
3438 fprintf_unfiltered (gdb_stdlog
,
3439 "target_fileio_readlink (%s) = %s (%d)\n",
3440 filename
, ret
? ret
: "(nil)",
3441 ret
? 0 : *target_errno
);
3446 *target_errno
= FILEIO_ENOSYS
;
3451 target_fileio_close_cleanup (void *opaque
)
3453 int fd
= *(int *) opaque
;
3456 target_fileio_close (fd
, &target_errno
);
3459 /* Read target file FILENAME. Store the result in *BUF_P and
3460 return the size of the transferred data. PADDING additional bytes are
3461 available in *BUF_P. This is a helper function for
3462 target_fileio_read_alloc; see the declaration of that function for more
3466 target_fileio_read_alloc_1 (const char *filename
,
3467 gdb_byte
**buf_p
, int padding
)
3469 struct cleanup
*close_cleanup
;
3470 size_t buf_alloc
, buf_pos
;
3476 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3480 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3482 /* Start by reading up to 4K at a time. The target will throttle
3483 this number down if necessary. */
3485 buf
= xmalloc (buf_alloc
);
3489 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3490 buf_alloc
- buf_pos
- padding
, buf_pos
,
3494 /* An error occurred. */
3495 do_cleanups (close_cleanup
);
3501 /* Read all there was. */
3502 do_cleanups (close_cleanup
);
3512 /* If the buffer is filling up, expand it. */
3513 if (buf_alloc
< buf_pos
* 2)
3516 buf
= xrealloc (buf
, buf_alloc
);
3523 /* Read target file FILENAME. Store the result in *BUF_P and return
3524 the size of the transferred data. See the declaration in "target.h"
3525 function for more information about the return value. */
3528 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3530 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3533 /* Read target file FILENAME. The result is NUL-terminated and
3534 returned as a string, allocated using xmalloc. If an error occurs
3535 or the transfer is unsupported, NULL is returned. Empty objects
3536 are returned as allocated but empty strings. A warning is issued
3537 if the result contains any embedded NUL bytes. */
3540 target_fileio_read_stralloc (const char *filename
)
3544 LONGEST i
, transferred
;
3546 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3547 bufstr
= (char *) buffer
;
3549 if (transferred
< 0)
3552 if (transferred
== 0)
3553 return xstrdup ("");
3555 bufstr
[transferred
] = 0;
3557 /* Check for embedded NUL bytes; but allow trailing NULs. */
3558 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3561 warning (_("target file %s "
3562 "contained unexpected null characters"),
3572 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3574 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3578 default_watchpoint_addr_within_range (struct target_ops
*target
,
3580 CORE_ADDR start
, int length
)
3582 return addr
>= start
&& addr
< start
+ length
;
3585 static struct gdbarch
*
3586 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3588 return target_gdbarch ();
3604 return_minus_one (void)
3610 * Find the next target down the stack from the specified target.
3614 find_target_beneath (struct target_ops
*t
)
3620 /* The inferior process has died. Long live the inferior! */
3623 generic_mourn_inferior (void)
3627 ptid
= inferior_ptid
;
3628 inferior_ptid
= null_ptid
;
3630 /* Mark breakpoints uninserted in case something tries to delete a
3631 breakpoint while we delete the inferior's threads (which would
3632 fail, since the inferior is long gone). */
3633 mark_breakpoints_out ();
3635 if (!ptid_equal (ptid
, null_ptid
))
3637 int pid
= ptid_get_pid (ptid
);
3638 exit_inferior (pid
);
3641 /* Note this wipes step-resume breakpoints, so needs to be done
3642 after exit_inferior, which ends up referencing the step-resume
3643 breakpoints through clear_thread_inferior_resources. */
3644 breakpoint_init_inferior (inf_exited
);
3646 registers_changed ();
3648 reopen_exec_file ();
3649 reinit_frame_cache ();
3651 if (deprecated_detach_hook
)
3652 deprecated_detach_hook ();
3655 /* Convert a normal process ID to a string. Returns the string in a
3659 normal_pid_to_str (ptid_t ptid
)
3661 static char buf
[32];
3663 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3668 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3670 return normal_pid_to_str (ptid
);
3673 /* Error-catcher for target_find_memory_regions. */
3675 dummy_find_memory_regions (find_memory_region_ftype ignore1
, void *ignore2
)
3677 error (_("Command not implemented for this target."));
3681 /* Error-catcher for target_make_corefile_notes. */
3683 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
3685 error (_("Command not implemented for this target."));
3689 /* Error-catcher for target_get_bookmark. */
3691 dummy_get_bookmark (char *ignore1
, int ignore2
)
3697 /* Error-catcher for target_goto_bookmark. */
3699 dummy_goto_bookmark (gdb_byte
*ignore
, int from_tty
)
3704 /* Set up the handful of non-empty slots needed by the dummy target
3708 init_dummy_target (void)
3710 dummy_target
.to_shortname
= "None";
3711 dummy_target
.to_longname
= "None";
3712 dummy_target
.to_doc
= "";
3713 dummy_target
.to_attach
= find_default_attach
;
3714 dummy_target
.to_detach
=
3715 (void (*)(struct target_ops
*, const char *, int))target_ignore
;
3716 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3717 dummy_target
.to_can_async_p
= find_default_can_async_p
;
3718 dummy_target
.to_is_async_p
= find_default_is_async_p
;
3719 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3720 dummy_target
.to_supports_disable_randomization
3721 = find_default_supports_disable_randomization
;
3722 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3723 dummy_target
.to_stratum
= dummy_stratum
;
3724 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
3725 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
3726 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
3727 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
3728 dummy_target
.to_xfer_partial
= default_xfer_partial
;
3729 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3730 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3731 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3732 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3733 dummy_target
.to_has_execution
3734 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3735 dummy_target
.to_stopped_by_watchpoint
= return_zero
;
3736 dummy_target
.to_stopped_data_address
=
3737 (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
;
3738 dummy_target
.to_magic
= OPS_MAGIC
;
3742 debug_to_open (char *args
, int from_tty
)
3744 debug_target
.to_open (args
, from_tty
);
3746 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3750 target_close (struct target_ops
*targ
)
3752 gdb_assert (!target_is_pushed (targ
));
3754 if (targ
->to_xclose
!= NULL
)
3755 targ
->to_xclose (targ
);
3756 else if (targ
->to_close
!= NULL
)
3760 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3764 target_attach (char *args
, int from_tty
)
3766 struct target_ops
*t
;
3768 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3770 if (t
->to_attach
!= NULL
)
3772 t
->to_attach (t
, args
, from_tty
);
3774 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3780 internal_error (__FILE__
, __LINE__
,
3781 _("could not find a target to attach"));
3785 target_thread_alive (ptid_t ptid
)
3787 struct target_ops
*t
;
3789 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3791 if (t
->to_thread_alive
!= NULL
)
3795 retval
= t
->to_thread_alive (t
, ptid
);
3797 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3798 ptid_get_pid (ptid
), retval
);
3808 target_find_new_threads (void)
3810 struct target_ops
*t
;
3812 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3814 if (t
->to_find_new_threads
!= NULL
)
3816 t
->to_find_new_threads (t
);
3818 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3826 target_stop (ptid_t ptid
)
3830 warning (_("May not interrupt or stop the target, ignoring attempt"));
3834 (*current_target
.to_stop
) (ptid
);
3838 debug_to_post_attach (int pid
)
3840 debug_target
.to_post_attach (pid
);
3842 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3845 /* Concatenate ELEM to LIST, a comma separate list, and return the
3846 result. The LIST incoming argument is released. */
3849 str_comma_list_concat_elem (char *list
, const char *elem
)
3852 return xstrdup (elem
);
3854 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3857 /* Helper for target_options_to_string. If OPT is present in
3858 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3859 Returns the new resulting string. OPT is removed from
3863 do_option (int *target_options
, char *ret
,
3864 int opt
, char *opt_str
)
3866 if ((*target_options
& opt
) != 0)
3868 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3869 *target_options
&= ~opt
;
3876 target_options_to_string (int target_options
)
3880 #define DO_TARG_OPTION(OPT) \
3881 ret = do_option (&target_options, ret, OPT, #OPT)
3883 DO_TARG_OPTION (TARGET_WNOHANG
);
3885 if (target_options
!= 0)
3886 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3894 debug_print_register (const char * func
,
3895 struct regcache
*regcache
, int regno
)
3897 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3899 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3900 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3901 && gdbarch_register_name (gdbarch
, regno
) != NULL
3902 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3903 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3904 gdbarch_register_name (gdbarch
, regno
));
3906 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3907 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3909 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3910 int i
, size
= register_size (gdbarch
, regno
);
3911 gdb_byte buf
[MAX_REGISTER_SIZE
];
3913 regcache_raw_collect (regcache
, regno
, buf
);
3914 fprintf_unfiltered (gdb_stdlog
, " = ");
3915 for (i
= 0; i
< size
; i
++)
3917 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3919 if (size
<= sizeof (LONGEST
))
3921 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3923 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3924 core_addr_to_string_nz (val
), plongest (val
));
3927 fprintf_unfiltered (gdb_stdlog
, "\n");
3931 target_fetch_registers (struct regcache
*regcache
, int regno
)
3933 struct target_ops
*t
;
3935 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3937 if (t
->to_fetch_registers
!= NULL
)
3939 t
->to_fetch_registers (t
, regcache
, regno
);
3941 debug_print_register ("target_fetch_registers", regcache
, regno
);
3948 target_store_registers (struct regcache
*regcache
, int regno
)
3950 struct target_ops
*t
;
3952 if (!may_write_registers
)
3953 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3955 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3957 if (t
->to_store_registers
!= NULL
)
3959 t
->to_store_registers (t
, regcache
, regno
);
3962 debug_print_register ("target_store_registers", regcache
, regno
);
3972 target_core_of_thread (ptid_t ptid
)
3974 struct target_ops
*t
;
3976 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3978 if (t
->to_core_of_thread
!= NULL
)
3980 int retval
= t
->to_core_of_thread (t
, ptid
);
3983 fprintf_unfiltered (gdb_stdlog
,
3984 "target_core_of_thread (%d) = %d\n",
3985 ptid_get_pid (ptid
), retval
);
3994 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3996 struct target_ops
*t
;
3998 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4000 if (t
->to_verify_memory
!= NULL
)
4002 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
4005 fprintf_unfiltered (gdb_stdlog
,
4006 "target_verify_memory (%s, %s) = %d\n",
4007 paddress (target_gdbarch (), memaddr
),
4017 /* The documentation for this function is in its prototype declaration in
4021 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4023 struct target_ops
*t
;
4025 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4026 if (t
->to_insert_mask_watchpoint
!= NULL
)
4030 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
4033 fprintf_unfiltered (gdb_stdlog
, "\
4034 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
4035 core_addr_to_string (addr
),
4036 core_addr_to_string (mask
), rw
, ret
);
4044 /* The documentation for this function is in its prototype declaration in
4048 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4050 struct target_ops
*t
;
4052 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4053 if (t
->to_remove_mask_watchpoint
!= NULL
)
4057 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
4060 fprintf_unfiltered (gdb_stdlog
, "\
4061 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
4062 core_addr_to_string (addr
),
4063 core_addr_to_string (mask
), rw
, ret
);
4071 /* The documentation for this function is in its prototype declaration
4075 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4077 struct target_ops
*t
;
4079 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4080 if (t
->to_masked_watch_num_registers
!= NULL
)
4081 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4086 /* The documentation for this function is in its prototype declaration
4090 target_ranged_break_num_registers (void)
4092 struct target_ops
*t
;
4094 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4095 if (t
->to_ranged_break_num_registers
!= NULL
)
4096 return t
->to_ranged_break_num_registers (t
);
4104 target_supports_btrace (void)
4106 struct target_ops
*t
;
4108 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4109 if (t
->to_supports_btrace
!= NULL
)
4110 return t
->to_supports_btrace ();
4117 struct btrace_target_info
*
4118 target_enable_btrace (ptid_t ptid
)
4120 struct target_ops
*t
;
4122 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4123 if (t
->to_enable_btrace
!= NULL
)
4124 return t
->to_enable_btrace (ptid
);
4133 target_disable_btrace (struct btrace_target_info
*btinfo
)
4135 struct target_ops
*t
;
4137 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4138 if (t
->to_disable_btrace
!= NULL
)
4140 t
->to_disable_btrace (btinfo
);
4150 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4152 struct target_ops
*t
;
4154 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4155 if (t
->to_teardown_btrace
!= NULL
)
4157 t
->to_teardown_btrace (btinfo
);
4166 VEC (btrace_block_s
) *
4167 target_read_btrace (struct btrace_target_info
*btinfo
,
4168 enum btrace_read_type type
)
4170 struct target_ops
*t
;
4172 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4173 if (t
->to_read_btrace
!= NULL
)
4174 return t
->to_read_btrace (btinfo
, type
);
4183 target_stop_recording (void)
4185 struct target_ops
*t
;
4187 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4188 if (t
->to_stop_recording
!= NULL
)
4190 t
->to_stop_recording ();
4194 /* This is optional. */
4200 target_info_record (void)
4202 struct target_ops
*t
;
4204 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4205 if (t
->to_info_record
!= NULL
)
4207 t
->to_info_record ();
4217 target_save_record (const char *filename
)
4219 struct target_ops
*t
;
4221 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4222 if (t
->to_save_record
!= NULL
)
4224 t
->to_save_record (filename
);
4234 target_supports_delete_record (void)
4236 struct target_ops
*t
;
4238 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4239 if (t
->to_delete_record
!= NULL
)
4248 target_delete_record (void)
4250 struct target_ops
*t
;
4252 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4253 if (t
->to_delete_record
!= NULL
)
4255 t
->to_delete_record ();
4265 target_record_is_replaying (void)
4267 struct target_ops
*t
;
4269 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4270 if (t
->to_record_is_replaying
!= NULL
)
4271 return t
->to_record_is_replaying ();
4279 target_goto_record_begin (void)
4281 struct target_ops
*t
;
4283 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4284 if (t
->to_goto_record_begin
!= NULL
)
4286 t
->to_goto_record_begin ();
4296 target_goto_record_end (void)
4298 struct target_ops
*t
;
4300 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4301 if (t
->to_goto_record_end
!= NULL
)
4303 t
->to_goto_record_end ();
4313 target_goto_record (ULONGEST insn
)
4315 struct target_ops
*t
;
4317 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4318 if (t
->to_goto_record
!= NULL
)
4320 t
->to_goto_record (insn
);
4330 target_insn_history (int size
, int flags
)
4332 struct target_ops
*t
;
4334 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4335 if (t
->to_insn_history
!= NULL
)
4337 t
->to_insn_history (size
, flags
);
4347 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4349 struct target_ops
*t
;
4351 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4352 if (t
->to_insn_history_from
!= NULL
)
4354 t
->to_insn_history_from (from
, size
, flags
);
4364 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4366 struct target_ops
*t
;
4368 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4369 if (t
->to_insn_history_range
!= NULL
)
4371 t
->to_insn_history_range (begin
, end
, flags
);
4381 target_call_history (int size
, int flags
)
4383 struct target_ops
*t
;
4385 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4386 if (t
->to_call_history
!= NULL
)
4388 t
->to_call_history (size
, flags
);
4398 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4400 struct target_ops
*t
;
4402 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4403 if (t
->to_call_history_from
!= NULL
)
4405 t
->to_call_history_from (begin
, size
, flags
);
4415 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4417 struct target_ops
*t
;
4419 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4420 if (t
->to_call_history_range
!= NULL
)
4422 t
->to_call_history_range (begin
, end
, flags
);
4430 debug_to_prepare_to_store (struct regcache
*regcache
)
4432 debug_target
.to_prepare_to_store (regcache
);
4434 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4438 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4439 int write
, struct mem_attrib
*attrib
,
4440 struct target_ops
*target
)
4444 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4447 fprintf_unfiltered (gdb_stdlog
,
4448 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4449 paddress (target_gdbarch (), memaddr
), len
,
4450 write
? "write" : "read", retval
);
4456 fputs_unfiltered (", bytes =", gdb_stdlog
);
4457 for (i
= 0; i
< retval
; i
++)
4459 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4461 if (targetdebug
< 2 && i
> 0)
4463 fprintf_unfiltered (gdb_stdlog
, " ...");
4466 fprintf_unfiltered (gdb_stdlog
, "\n");
4469 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4473 fputc_unfiltered ('\n', gdb_stdlog
);
4479 debug_to_files_info (struct target_ops
*target
)
4481 debug_target
.to_files_info (target
);
4483 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4487 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
4488 struct bp_target_info
*bp_tgt
)
4492 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
4494 fprintf_unfiltered (gdb_stdlog
,
4495 "target_insert_breakpoint (%s, xxx) = %ld\n",
4496 core_addr_to_string (bp_tgt
->placed_address
),
4497 (unsigned long) retval
);
4502 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
4503 struct bp_target_info
*bp_tgt
)
4507 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
4509 fprintf_unfiltered (gdb_stdlog
,
4510 "target_remove_breakpoint (%s, xxx) = %ld\n",
4511 core_addr_to_string (bp_tgt
->placed_address
),
4512 (unsigned long) retval
);
4517 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
4521 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
4523 fprintf_unfiltered (gdb_stdlog
,
4524 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4525 (unsigned long) type
,
4526 (unsigned long) cnt
,
4527 (unsigned long) from_tty
,
4528 (unsigned long) retval
);
4533 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
4537 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
4539 fprintf_unfiltered (gdb_stdlog
,
4540 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4541 core_addr_to_string (addr
), (unsigned long) len
,
4542 core_addr_to_string (retval
));
4547 debug_to_can_accel_watchpoint_condition (CORE_ADDR addr
, int len
, int rw
,
4548 struct expression
*cond
)
4552 retval
= debug_target
.to_can_accel_watchpoint_condition (addr
, len
,
4555 fprintf_unfiltered (gdb_stdlog
,
4556 "target_can_accel_watchpoint_condition "
4557 "(%s, %d, %d, %s) = %ld\n",
4558 core_addr_to_string (addr
), len
, rw
,
4559 host_address_to_string (cond
), (unsigned long) retval
);
4564 debug_to_stopped_by_watchpoint (void)
4568 retval
= debug_target
.to_stopped_by_watchpoint ();
4570 fprintf_unfiltered (gdb_stdlog
,
4571 "target_stopped_by_watchpoint () = %ld\n",
4572 (unsigned long) retval
);
4577 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4581 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4583 fprintf_unfiltered (gdb_stdlog
,
4584 "target_stopped_data_address ([%s]) = %ld\n",
4585 core_addr_to_string (*addr
),
4586 (unsigned long)retval
);
4591 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4593 CORE_ADDR start
, int length
)
4597 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4600 fprintf_filtered (gdb_stdlog
,
4601 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4602 core_addr_to_string (addr
), core_addr_to_string (start
),
4608 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
4609 struct bp_target_info
*bp_tgt
)
4613 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
4615 fprintf_unfiltered (gdb_stdlog
,
4616 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4617 core_addr_to_string (bp_tgt
->placed_address
),
4618 (unsigned long) retval
);
4623 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
4624 struct bp_target_info
*bp_tgt
)
4628 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
4630 fprintf_unfiltered (gdb_stdlog
,
4631 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4632 core_addr_to_string (bp_tgt
->placed_address
),
4633 (unsigned long) retval
);
4638 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
4639 struct expression
*cond
)
4643 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
, cond
);
4645 fprintf_unfiltered (gdb_stdlog
,
4646 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4647 core_addr_to_string (addr
), len
, type
,
4648 host_address_to_string (cond
), (unsigned long) retval
);
4653 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
4654 struct expression
*cond
)
4658 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
, cond
);
4660 fprintf_unfiltered (gdb_stdlog
,
4661 "target_remove_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_terminal_init (void)
4670 debug_target
.to_terminal_init ();
4672 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4676 debug_to_terminal_inferior (void)
4678 debug_target
.to_terminal_inferior ();
4680 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4684 debug_to_terminal_ours_for_output (void)
4686 debug_target
.to_terminal_ours_for_output ();
4688 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4692 debug_to_terminal_ours (void)
4694 debug_target
.to_terminal_ours ();
4696 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4700 debug_to_terminal_save_ours (void)
4702 debug_target
.to_terminal_save_ours ();
4704 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4708 debug_to_terminal_info (const char *arg
, int from_tty
)
4710 debug_target
.to_terminal_info (arg
, from_tty
);
4712 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4717 debug_to_load (char *args
, int from_tty
)
4719 debug_target
.to_load (args
, from_tty
);
4721 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4725 debug_to_post_startup_inferior (ptid_t ptid
)
4727 debug_target
.to_post_startup_inferior (ptid
);
4729 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4730 ptid_get_pid (ptid
));
4734 debug_to_insert_fork_catchpoint (int pid
)
4738 retval
= debug_target
.to_insert_fork_catchpoint (pid
);
4740 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4747 debug_to_remove_fork_catchpoint (int pid
)
4751 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
4753 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4760 debug_to_insert_vfork_catchpoint (int pid
)
4764 retval
= debug_target
.to_insert_vfork_catchpoint (pid
);
4766 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4773 debug_to_remove_vfork_catchpoint (int pid
)
4777 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
4779 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4786 debug_to_insert_exec_catchpoint (int pid
)
4790 retval
= debug_target
.to_insert_exec_catchpoint (pid
);
4792 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4799 debug_to_remove_exec_catchpoint (int pid
)
4803 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
4805 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4812 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
4816 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
4818 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4819 pid
, wait_status
, *exit_status
, has_exited
);
4825 debug_to_can_run (void)
4829 retval
= debug_target
.to_can_run ();
4831 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4836 static struct gdbarch
*
4837 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4839 struct gdbarch
*retval
;
4841 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4843 fprintf_unfiltered (gdb_stdlog
,
4844 "target_thread_architecture (%s) = %s [%s]\n",
4845 target_pid_to_str (ptid
),
4846 host_address_to_string (retval
),
4847 gdbarch_bfd_arch_info (retval
)->printable_name
);
4852 debug_to_stop (ptid_t ptid
)
4854 debug_target
.to_stop (ptid
);
4856 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4857 target_pid_to_str (ptid
));
4861 debug_to_rcmd (char *command
,
4862 struct ui_file
*outbuf
)
4864 debug_target
.to_rcmd (command
, outbuf
);
4865 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4869 debug_to_pid_to_exec_file (int pid
)
4873 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
4875 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4882 setup_target_debug (void)
4884 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4886 current_target
.to_open
= debug_to_open
;
4887 current_target
.to_post_attach
= debug_to_post_attach
;
4888 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4889 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4890 current_target
.to_files_info
= debug_to_files_info
;
4891 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4892 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4893 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4894 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4895 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4896 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4897 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4898 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4899 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4900 current_target
.to_watchpoint_addr_within_range
4901 = debug_to_watchpoint_addr_within_range
;
4902 current_target
.to_region_ok_for_hw_watchpoint
4903 = debug_to_region_ok_for_hw_watchpoint
;
4904 current_target
.to_can_accel_watchpoint_condition
4905 = debug_to_can_accel_watchpoint_condition
;
4906 current_target
.to_terminal_init
= debug_to_terminal_init
;
4907 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4908 current_target
.to_terminal_ours_for_output
4909 = debug_to_terminal_ours_for_output
;
4910 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4911 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4912 current_target
.to_terminal_info
= debug_to_terminal_info
;
4913 current_target
.to_load
= debug_to_load
;
4914 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4915 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4916 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4917 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4918 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4919 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4920 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4921 current_target
.to_has_exited
= debug_to_has_exited
;
4922 current_target
.to_can_run
= debug_to_can_run
;
4923 current_target
.to_stop
= debug_to_stop
;
4924 current_target
.to_rcmd
= debug_to_rcmd
;
4925 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4926 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4930 static char targ_desc
[] =
4931 "Names of targets and files being debugged.\nShows the entire \
4932 stack of targets currently in use (including the exec-file,\n\
4933 core-file, and process, if any), as well as the symbol file name.";
4936 do_monitor_command (char *cmd
,
4939 if ((current_target
.to_rcmd
4940 == (void (*) (char *, struct ui_file
*)) tcomplain
)
4941 || (current_target
.to_rcmd
== debug_to_rcmd
4942 && (debug_target
.to_rcmd
4943 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
4944 error (_("\"monitor\" command not supported by this target."));
4945 target_rcmd (cmd
, gdb_stdtarg
);
4948 /* Print the name of each layers of our target stack. */
4951 maintenance_print_target_stack (char *cmd
, int from_tty
)
4953 struct target_ops
*t
;
4955 printf_filtered (_("The current target stack is:\n"));
4957 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4959 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4963 /* Controls if async mode is permitted. */
4964 int target_async_permitted
= 0;
4966 /* The set command writes to this variable. If the inferior is
4967 executing, target_async_permitted is *not* updated. */
4968 static int target_async_permitted_1
= 0;
4971 set_target_async_command (char *args
, int from_tty
,
4972 struct cmd_list_element
*c
)
4974 if (have_live_inferiors ())
4976 target_async_permitted_1
= target_async_permitted
;
4977 error (_("Cannot change this setting while the inferior is running."));
4980 target_async_permitted
= target_async_permitted_1
;
4984 show_target_async_command (struct ui_file
*file
, int from_tty
,
4985 struct cmd_list_element
*c
,
4988 fprintf_filtered (file
,
4989 _("Controlling the inferior in "
4990 "asynchronous mode is %s.\n"), value
);
4993 /* Temporary copies of permission settings. */
4995 static int may_write_registers_1
= 1;
4996 static int may_write_memory_1
= 1;
4997 static int may_insert_breakpoints_1
= 1;
4998 static int may_insert_tracepoints_1
= 1;
4999 static int may_insert_fast_tracepoints_1
= 1;
5000 static int may_stop_1
= 1;
5002 /* Make the user-set values match the real values again. */
5005 update_target_permissions (void)
5007 may_write_registers_1
= may_write_registers
;
5008 may_write_memory_1
= may_write_memory
;
5009 may_insert_breakpoints_1
= may_insert_breakpoints
;
5010 may_insert_tracepoints_1
= may_insert_tracepoints
;
5011 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
5012 may_stop_1
= may_stop
;
5015 /* The one function handles (most of) the permission flags in the same
5019 set_target_permissions (char *args
, int from_tty
,
5020 struct cmd_list_element
*c
)
5022 if (target_has_execution
)
5024 update_target_permissions ();
5025 error (_("Cannot change this setting while the inferior is running."));
5028 /* Make the real values match the user-changed values. */
5029 may_write_registers
= may_write_registers_1
;
5030 may_insert_breakpoints
= may_insert_breakpoints_1
;
5031 may_insert_tracepoints
= may_insert_tracepoints_1
;
5032 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
5033 may_stop
= may_stop_1
;
5034 update_observer_mode ();
5037 /* Set memory write permission independently of observer mode. */
5040 set_write_memory_permission (char *args
, int from_tty
,
5041 struct cmd_list_element
*c
)
5043 /* Make the real values match the user-changed values. */
5044 may_write_memory
= may_write_memory_1
;
5045 update_observer_mode ();
5050 initialize_targets (void)
5052 init_dummy_target ();
5053 push_target (&dummy_target
);
5055 add_info ("target", target_info
, targ_desc
);
5056 add_info ("files", target_info
, targ_desc
);
5058 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
5059 Set target debugging."), _("\
5060 Show target debugging."), _("\
5061 When non-zero, target debugging is enabled. Higher numbers are more\n\
5062 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
5066 &setdebuglist
, &showdebuglist
);
5068 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
5069 &trust_readonly
, _("\
5070 Set mode for reading from readonly sections."), _("\
5071 Show mode for reading from readonly sections."), _("\
5072 When this mode is on, memory reads from readonly sections (such as .text)\n\
5073 will be read from the object file instead of from the target. This will\n\
5074 result in significant performance improvement for remote targets."),
5076 show_trust_readonly
,
5077 &setlist
, &showlist
);
5079 add_com ("monitor", class_obscure
, do_monitor_command
,
5080 _("Send a command to the remote monitor (remote targets only)."));
5082 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5083 _("Print the name of each layer of the internal target stack."),
5084 &maintenanceprintlist
);
5086 add_setshow_boolean_cmd ("target-async", no_class
,
5087 &target_async_permitted_1
, _("\
5088 Set whether gdb controls the inferior in asynchronous mode."), _("\
5089 Show whether gdb controls the inferior in asynchronous mode."), _("\
5090 Tells gdb whether to control the inferior in asynchronous mode."),
5091 set_target_async_command
,
5092 show_target_async_command
,
5096 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5097 &may_write_registers_1
, _("\
5098 Set permission to write into registers."), _("\
5099 Show permission to write into registers."), _("\
5100 When this permission is on, GDB may write into the target's registers.\n\
5101 Otherwise, any sort of write attempt will result in an error."),
5102 set_target_permissions
, NULL
,
5103 &setlist
, &showlist
);
5105 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5106 &may_write_memory_1
, _("\
5107 Set permission to write into target memory."), _("\
5108 Show permission to write into target memory."), _("\
5109 When this permission is on, GDB may write into the target's memory.\n\
5110 Otherwise, any sort of write attempt will result in an error."),
5111 set_write_memory_permission
, NULL
,
5112 &setlist
, &showlist
);
5114 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5115 &may_insert_breakpoints_1
, _("\
5116 Set permission to insert breakpoints in the target."), _("\
5117 Show permission to insert breakpoints in the target."), _("\
5118 When this permission is on, GDB may insert breakpoints in the program.\n\
5119 Otherwise, any sort of insertion attempt will result in an error."),
5120 set_target_permissions
, NULL
,
5121 &setlist
, &showlist
);
5123 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5124 &may_insert_tracepoints_1
, _("\
5125 Set permission to insert tracepoints in the target."), _("\
5126 Show permission to insert tracepoints in the target."), _("\
5127 When this permission is on, GDB may insert tracepoints in the program.\n\
5128 Otherwise, any sort of insertion attempt will result in an error."),
5129 set_target_permissions
, NULL
,
5130 &setlist
, &showlist
);
5132 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5133 &may_insert_fast_tracepoints_1
, _("\
5134 Set permission to insert fast tracepoints in the target."), _("\
5135 Show permission to insert fast tracepoints in the target."), _("\
5136 When this permission is on, GDB may insert fast tracepoints.\n\
5137 Otherwise, any sort of insertion attempt will result in an error."),
5138 set_target_permissions
, NULL
,
5139 &setlist
, &showlist
);
5141 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5143 Set permission to interrupt or signal the target."), _("\
5144 Show permission to interrupt or signal the target."), _("\
5145 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5146 Otherwise, any attempt to interrupt or stop will be ignored."),
5147 set_target_permissions
, NULL
,
5148 &setlist
, &showlist
);