1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2014 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 (struct target_ops
*, 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 (struct target_ops
*,
58 static void default_rcmd (struct target_ops
*, char *, struct ui_file
*);
60 static void tcomplain (void) ATTRIBUTE_NORETURN
;
62 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
64 static int return_zero (void);
66 static int return_minus_one (void);
68 static void *return_null (void);
70 void target_ignore (void);
72 static void target_command (char *, int);
74 static struct target_ops
*find_default_run_target (char *);
76 static target_xfer_partial_ftype default_xfer_partial
;
78 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
81 static int dummy_find_memory_regions (struct target_ops
*self
,
82 find_memory_region_ftype ignore1
,
85 static char *dummy_make_corefile_notes (struct target_ops
*self
,
86 bfd
*ignore1
, int *ignore2
);
88 static int find_default_can_async_p (struct target_ops
*ignore
);
90 static int find_default_is_async_p (struct target_ops
*ignore
);
92 #include "target-delegates.c"
94 static void init_dummy_target (void);
96 static struct target_ops debug_target
;
98 static void debug_to_open (char *, int);
100 static void debug_to_prepare_to_store (struct target_ops
*self
,
103 static void debug_to_files_info (struct target_ops
*);
105 static int debug_to_insert_breakpoint (struct target_ops
*, struct gdbarch
*,
106 struct bp_target_info
*);
108 static int debug_to_remove_breakpoint (struct target_ops
*, struct gdbarch
*,
109 struct bp_target_info
*);
111 static int debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
114 static int debug_to_insert_hw_breakpoint (struct target_ops
*self
,
116 struct bp_target_info
*);
118 static int debug_to_remove_hw_breakpoint (struct target_ops
*self
,
120 struct bp_target_info
*);
122 static int debug_to_insert_watchpoint (struct target_ops
*self
,
124 struct expression
*);
126 static int debug_to_remove_watchpoint (struct target_ops
*self
,
128 struct expression
*);
130 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
132 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
133 CORE_ADDR
, CORE_ADDR
, int);
135 static int debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
138 static int debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
140 struct expression
*);
142 static void debug_to_terminal_init (struct target_ops
*self
);
144 static void debug_to_terminal_inferior (struct target_ops
*self
);
146 static void debug_to_terminal_ours_for_output (struct target_ops
*self
);
148 static void debug_to_terminal_save_ours (struct target_ops
*self
);
150 static void debug_to_terminal_ours (struct target_ops
*self
);
152 static void debug_to_load (struct target_ops
*self
, char *, int);
154 static int debug_to_can_run (struct target_ops
*self
);
156 static void debug_to_stop (struct target_ops
*self
, ptid_t
);
158 /* Pointer to array of target architecture structures; the size of the
159 array; the current index into the array; the allocated size of the
161 struct target_ops
**target_structs
;
162 unsigned target_struct_size
;
163 unsigned target_struct_allocsize
;
164 #define DEFAULT_ALLOCSIZE 10
166 /* The initial current target, so that there is always a semi-valid
169 static struct target_ops dummy_target
;
171 /* Top of target stack. */
173 static struct target_ops
*target_stack
;
175 /* The target structure we are currently using to talk to a process
176 or file or whatever "inferior" we have. */
178 struct target_ops current_target
;
180 /* Command list for target. */
182 static struct cmd_list_element
*targetlist
= NULL
;
184 /* Nonzero if we should trust readonly sections from the
185 executable when reading memory. */
187 static int trust_readonly
= 0;
189 /* Nonzero if we should show true memory content including
190 memory breakpoint inserted by gdb. */
192 static int show_memory_breakpoints
= 0;
194 /* These globals control whether GDB attempts to perform these
195 operations; they are useful for targets that need to prevent
196 inadvertant disruption, such as in non-stop mode. */
198 int may_write_registers
= 1;
200 int may_write_memory
= 1;
202 int may_insert_breakpoints
= 1;
204 int may_insert_tracepoints
= 1;
206 int may_insert_fast_tracepoints
= 1;
210 /* Non-zero if we want to see trace of target level stuff. */
212 static unsigned int targetdebug
= 0;
214 show_targetdebug (struct ui_file
*file
, int from_tty
,
215 struct cmd_list_element
*c
, const char *value
)
217 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
220 static void setup_target_debug (void);
222 /* The user just typed 'target' without the name of a target. */
225 target_command (char *arg
, int from_tty
)
227 fputs_filtered ("Argument required (target name). Try `help target'\n",
231 /* Default target_has_* methods for process_stratum targets. */
234 default_child_has_all_memory (struct target_ops
*ops
)
236 /* If no inferior selected, then we can't read memory here. */
237 if (ptid_equal (inferior_ptid
, null_ptid
))
244 default_child_has_memory (struct target_ops
*ops
)
246 /* If no inferior selected, then we can't read memory here. */
247 if (ptid_equal (inferior_ptid
, null_ptid
))
254 default_child_has_stack (struct target_ops
*ops
)
256 /* If no inferior selected, there's no stack. */
257 if (ptid_equal (inferior_ptid
, null_ptid
))
264 default_child_has_registers (struct target_ops
*ops
)
266 /* Can't read registers from no inferior. */
267 if (ptid_equal (inferior_ptid
, null_ptid
))
274 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
276 /* If there's no thread selected, then we can't make it run through
278 if (ptid_equal (the_ptid
, null_ptid
))
286 target_has_all_memory_1 (void)
288 struct target_ops
*t
;
290 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
291 if (t
->to_has_all_memory (t
))
298 target_has_memory_1 (void)
300 struct target_ops
*t
;
302 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
303 if (t
->to_has_memory (t
))
310 target_has_stack_1 (void)
312 struct target_ops
*t
;
314 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
315 if (t
->to_has_stack (t
))
322 target_has_registers_1 (void)
324 struct target_ops
*t
;
326 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
327 if (t
->to_has_registers (t
))
334 target_has_execution_1 (ptid_t the_ptid
)
336 struct target_ops
*t
;
338 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
339 if (t
->to_has_execution (t
, the_ptid
))
346 target_has_execution_current (void)
348 return target_has_execution_1 (inferior_ptid
);
351 /* Complete initialization of T. This ensures that various fields in
352 T are set, if needed by the target implementation. */
355 complete_target_initialization (struct target_ops
*t
)
357 /* Provide default values for all "must have" methods. */
358 if (t
->to_xfer_partial
== NULL
)
359 t
->to_xfer_partial
= default_xfer_partial
;
361 if (t
->to_has_all_memory
== NULL
)
362 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
364 if (t
->to_has_memory
== NULL
)
365 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
367 if (t
->to_has_stack
== NULL
)
368 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
370 if (t
->to_has_registers
== NULL
)
371 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
373 if (t
->to_has_execution
== NULL
)
374 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
376 install_delegators (t
);
379 /* Add possible target architecture T to the list and add a new
380 command 'target T->to_shortname'. Set COMPLETER as the command's
381 completer if not NULL. */
384 add_target_with_completer (struct target_ops
*t
,
385 completer_ftype
*completer
)
387 struct cmd_list_element
*c
;
389 complete_target_initialization (t
);
393 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
394 target_structs
= (struct target_ops
**) xmalloc
395 (target_struct_allocsize
* sizeof (*target_structs
));
397 if (target_struct_size
>= target_struct_allocsize
)
399 target_struct_allocsize
*= 2;
400 target_structs
= (struct target_ops
**)
401 xrealloc ((char *) target_structs
,
402 target_struct_allocsize
* sizeof (*target_structs
));
404 target_structs
[target_struct_size
++] = t
;
406 if (targetlist
== NULL
)
407 add_prefix_cmd ("target", class_run
, target_command
, _("\
408 Connect to a target machine or process.\n\
409 The first argument is the type or protocol of the target machine.\n\
410 Remaining arguments are interpreted by the target protocol. For more\n\
411 information on the arguments for a particular protocol, type\n\
412 `help target ' followed by the protocol name."),
413 &targetlist
, "target ", 0, &cmdlist
);
414 c
= add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
,
416 if (completer
!= NULL
)
417 set_cmd_completer (c
, completer
);
420 /* Add a possible target architecture to the list. */
423 add_target (struct target_ops
*t
)
425 add_target_with_completer (t
, NULL
);
431 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
433 struct cmd_list_element
*c
;
436 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
438 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
439 alt
= xstrprintf ("target %s", t
->to_shortname
);
440 deprecate_cmd (c
, alt
);
453 struct target_ops
*t
;
455 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
456 if (t
->to_kill
!= NULL
)
459 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
469 target_load (char *arg
, int from_tty
)
471 target_dcache_invalidate ();
472 (*current_target
.to_load
) (¤t_target
, arg
, from_tty
);
476 target_create_inferior (char *exec_file
, char *args
,
477 char **env
, int from_tty
)
479 struct target_ops
*t
;
481 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
483 if (t
->to_create_inferior
!= NULL
)
485 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
487 fprintf_unfiltered (gdb_stdlog
,
488 "target_create_inferior (%s, %s, xxx, %d)\n",
489 exec_file
, args
, from_tty
);
494 internal_error (__FILE__
, __LINE__
,
495 _("could not find a target to create inferior"));
499 target_terminal_inferior (void)
501 /* A background resume (``run&'') should leave GDB in control of the
502 terminal. Use target_can_async_p, not target_is_async_p, since at
503 this point the target is not async yet. However, if sync_execution
504 is not set, we know it will become async prior to resume. */
505 if (target_can_async_p () && !sync_execution
)
508 /* If GDB is resuming the inferior in the foreground, install
509 inferior's terminal modes. */
510 (*current_target
.to_terminal_inferior
) (¤t_target
);
514 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
515 struct target_ops
*t
)
517 errno
= EIO
; /* Can't read/write this location. */
518 return 0; /* No bytes handled. */
524 error (_("You can't do that when your target is `%s'"),
525 current_target
.to_shortname
);
531 error (_("You can't do that without a process to debug."));
535 default_terminal_info (struct target_ops
*self
, const char *args
, int from_tty
)
537 printf_unfiltered (_("No saved terminal information.\n"));
540 /* A default implementation for the to_get_ada_task_ptid target method.
542 This function builds the PTID by using both LWP and TID as part of
543 the PTID lwp and tid elements. The pid used is the pid of the
547 default_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long tid
)
549 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
552 static enum exec_direction_kind
553 default_execution_direction (struct target_ops
*self
)
555 if (!target_can_execute_reverse
)
557 else if (!target_can_async_p ())
560 gdb_assert_not_reached ("\
561 to_execution_direction must be implemented for reverse async");
564 /* Go through the target stack from top to bottom, copying over zero
565 entries in current_target, then filling in still empty entries. In
566 effect, we are doing class inheritance through the pushed target
569 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
570 is currently implemented, is that it discards any knowledge of
571 which target an inherited method originally belonged to.
572 Consequently, new new target methods should instead explicitly and
573 locally search the target stack for the target that can handle the
577 update_current_target (void)
579 struct target_ops
*t
;
581 /* First, reset current's contents. */
582 memset (¤t_target
, 0, sizeof (current_target
));
584 /* Install the delegators. */
585 install_delegators (¤t_target
);
587 #define INHERIT(FIELD, TARGET) \
588 if (!current_target.FIELD) \
589 current_target.FIELD = (TARGET)->FIELD
591 for (t
= target_stack
; t
; t
= t
->beneath
)
593 INHERIT (to_shortname
, t
);
594 INHERIT (to_longname
, t
);
596 /* Do not inherit to_open. */
597 /* Do not inherit to_close. */
598 /* Do not inherit to_attach. */
599 /* Do not inherit to_post_attach. */
600 INHERIT (to_attach_no_wait
, t
);
601 /* Do not inherit to_detach. */
602 /* Do not inherit to_disconnect. */
603 /* Do not inherit to_resume. */
604 /* Do not inherit to_wait. */
605 /* Do not inherit to_fetch_registers. */
606 /* Do not inherit to_store_registers. */
607 /* Do not inherit to_prepare_to_store. */
608 INHERIT (deprecated_xfer_memory
, t
);
609 /* Do not inherit to_files_info. */
610 /* Do not inherit to_insert_breakpoint. */
611 /* Do not inherit to_remove_breakpoint. */
612 /* Do not inherit to_can_use_hw_breakpoint. */
613 /* Do not inherit to_insert_hw_breakpoint. */
614 /* Do not inherit to_remove_hw_breakpoint. */
615 /* Do not inherit to_ranged_break_num_registers. */
616 /* Do not inherit to_insert_watchpoint. */
617 /* Do not inherit to_remove_watchpoint. */
618 /* Do not inherit to_insert_mask_watchpoint. */
619 /* Do not inherit to_remove_mask_watchpoint. */
620 /* Do not inherit to_stopped_data_address. */
621 INHERIT (to_have_steppable_watchpoint
, t
);
622 INHERIT (to_have_continuable_watchpoint
, t
);
623 /* Do not inherit to_stopped_by_watchpoint. */
624 /* Do not inherit to_watchpoint_addr_within_range. */
625 /* Do not inherit to_region_ok_for_hw_watchpoint. */
626 /* Do not inherit to_can_accel_watchpoint_condition. */
627 /* Do not inherit to_masked_watch_num_registers. */
628 /* Do not inherit to_terminal_init. */
629 /* Do not inherit to_terminal_inferior. */
630 /* Do not inherit to_terminal_ours_for_output. */
631 /* Do not inherit to_terminal_ours. */
632 /* Do not inherit to_terminal_save_ours. */
633 /* Do not inherit to_terminal_info. */
634 /* Do not inherit to_kill. */
635 /* Do not inherit to_load. */
636 /* Do no inherit to_create_inferior. */
637 /* Do not inherit to_post_startup_inferior. */
638 /* Do not inherit to_insert_fork_catchpoint. */
639 /* Do not inherit to_remove_fork_catchpoint. */
640 /* Do not inherit to_insert_vfork_catchpoint. */
641 /* Do not inherit to_remove_vfork_catchpoint. */
642 /* Do not inherit to_follow_fork. */
643 /* Do not inherit to_insert_exec_catchpoint. */
644 /* Do not inherit to_remove_exec_catchpoint. */
645 /* Do not inherit to_set_syscall_catchpoint. */
646 /* Do not inherit to_has_exited. */
647 /* Do not inherit to_mourn_inferior. */
648 INHERIT (to_can_run
, t
);
649 /* Do not inherit to_pass_signals. */
650 /* Do not inherit to_program_signals. */
651 /* Do not inherit to_thread_alive. */
652 /* Do not inherit to_find_new_threads. */
653 /* Do not inherit to_pid_to_str. */
654 /* Do not inherit to_extra_thread_info. */
655 /* Do not inherit to_thread_name. */
656 INHERIT (to_stop
, t
);
657 /* Do not inherit to_xfer_partial. */
658 /* Do not inherit to_rcmd. */
659 /* Do not inherit to_pid_to_exec_file. */
660 /* Do not inherit to_log_command. */
661 INHERIT (to_stratum
, t
);
662 /* Do not inherit to_has_all_memory. */
663 /* Do not inherit to_has_memory. */
664 /* Do not inherit to_has_stack. */
665 /* Do not inherit to_has_registers. */
666 /* Do not inherit to_has_execution. */
667 INHERIT (to_has_thread_control
, t
);
668 /* Do not inherit to_can_async_p. */
669 /* Do not inherit to_is_async_p. */
670 /* Do not inherit to_async. */
671 /* Do not inherit to_find_memory_regions. */
672 /* Do not inherit to_make_corefile_notes. */
673 /* Do not inherit to_get_bookmark. */
674 /* Do not inherit to_goto_bookmark. */
675 /* Do not inherit to_get_thread_local_address. */
676 INHERIT (to_can_execute_reverse
, t
);
677 INHERIT (to_execution_direction
, t
);
678 INHERIT (to_thread_architecture
, t
);
679 /* Do not inherit to_read_description. */
680 INHERIT (to_get_ada_task_ptid
, t
);
681 /* Do not inherit to_search_memory. */
682 INHERIT (to_supports_multi_process
, t
);
683 INHERIT (to_supports_enable_disable_tracepoint
, t
);
684 INHERIT (to_supports_string_tracing
, t
);
685 INHERIT (to_trace_init
, t
);
686 INHERIT (to_download_tracepoint
, t
);
687 INHERIT (to_can_download_tracepoint
, t
);
688 INHERIT (to_download_trace_state_variable
, t
);
689 INHERIT (to_enable_tracepoint
, t
);
690 INHERIT (to_disable_tracepoint
, t
);
691 INHERIT (to_trace_set_readonly_regions
, t
);
692 INHERIT (to_trace_start
, t
);
693 INHERIT (to_get_trace_status
, t
);
694 INHERIT (to_get_tracepoint_status
, t
);
695 INHERIT (to_trace_stop
, t
);
696 INHERIT (to_trace_find
, t
);
697 INHERIT (to_get_trace_state_variable_value
, t
);
698 INHERIT (to_save_trace_data
, t
);
699 INHERIT (to_upload_tracepoints
, t
);
700 INHERIT (to_upload_trace_state_variables
, t
);
701 INHERIT (to_get_raw_trace_data
, t
);
702 INHERIT (to_get_min_fast_tracepoint_insn_len
, t
);
703 INHERIT (to_set_disconnected_tracing
, t
);
704 INHERIT (to_set_circular_trace_buffer
, t
);
705 INHERIT (to_set_trace_buffer_size
, t
);
706 INHERIT (to_set_trace_notes
, t
);
707 INHERIT (to_get_tib_address
, t
);
708 INHERIT (to_set_permissions
, t
);
709 INHERIT (to_static_tracepoint_marker_at
, t
);
710 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
711 INHERIT (to_traceframe_info
, t
);
712 INHERIT (to_use_agent
, t
);
713 INHERIT (to_can_use_agent
, t
);
714 INHERIT (to_augmented_libraries_svr4_read
, t
);
715 INHERIT (to_magic
, t
);
716 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
717 INHERIT (to_can_run_breakpoint_commands
, t
);
718 /* Do not inherit to_memory_map. */
719 /* Do not inherit to_flash_erase. */
720 /* Do not inherit to_flash_done. */
724 /* Clean up a target struct so it no longer has any zero pointers in
725 it. Some entries are defaulted to a method that print an error,
726 others are hard-wired to a standard recursive default. */
728 #define de_fault(field, value) \
729 if (!current_target.field) \
730 current_target.field = value
733 (void (*) (char *, int))
736 (void (*) (struct target_ops
*))
738 de_fault (deprecated_xfer_memory
,
739 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
740 struct mem_attrib
*, struct target_ops
*))
742 de_fault (to_can_run
,
743 (int (*) (struct target_ops
*))
746 (void (*) (struct target_ops
*, ptid_t
))
748 de_fault (to_thread_architecture
,
749 default_thread_architecture
);
750 current_target
.to_read_description
= NULL
;
751 de_fault (to_get_ada_task_ptid
,
752 (ptid_t (*) (struct target_ops
*, long, long))
753 default_get_ada_task_ptid
);
754 de_fault (to_supports_multi_process
,
755 (int (*) (struct target_ops
*))
757 de_fault (to_supports_enable_disable_tracepoint
,
758 (int (*) (struct target_ops
*))
760 de_fault (to_supports_string_tracing
,
761 (int (*) (struct target_ops
*))
763 de_fault (to_trace_init
,
764 (void (*) (struct target_ops
*))
766 de_fault (to_download_tracepoint
,
767 (void (*) (struct target_ops
*, struct bp_location
*))
769 de_fault (to_can_download_tracepoint
,
770 (int (*) (struct target_ops
*))
772 de_fault (to_download_trace_state_variable
,
773 (void (*) (struct target_ops
*, struct trace_state_variable
*))
775 de_fault (to_enable_tracepoint
,
776 (void (*) (struct target_ops
*, struct bp_location
*))
778 de_fault (to_disable_tracepoint
,
779 (void (*) (struct target_ops
*, struct bp_location
*))
781 de_fault (to_trace_set_readonly_regions
,
782 (void (*) (struct target_ops
*))
784 de_fault (to_trace_start
,
785 (void (*) (struct target_ops
*))
787 de_fault (to_get_trace_status
,
788 (int (*) (struct target_ops
*, struct trace_status
*))
790 de_fault (to_get_tracepoint_status
,
791 (void (*) (struct target_ops
*, struct breakpoint
*,
792 struct uploaded_tp
*))
794 de_fault (to_trace_stop
,
795 (void (*) (struct target_ops
*))
797 de_fault (to_trace_find
,
798 (int (*) (struct target_ops
*,
799 enum trace_find_type
, int, CORE_ADDR
, CORE_ADDR
, int *))
801 de_fault (to_get_trace_state_variable_value
,
802 (int (*) (struct target_ops
*, int, LONGEST
*))
804 de_fault (to_save_trace_data
,
805 (int (*) (struct target_ops
*, const char *))
807 de_fault (to_upload_tracepoints
,
808 (int (*) (struct target_ops
*, struct uploaded_tp
**))
810 de_fault (to_upload_trace_state_variables
,
811 (int (*) (struct target_ops
*, struct uploaded_tsv
**))
813 de_fault (to_get_raw_trace_data
,
814 (LONGEST (*) (struct target_ops
*, gdb_byte
*, ULONGEST
, LONGEST
))
816 de_fault (to_get_min_fast_tracepoint_insn_len
,
817 (int (*) (struct target_ops
*))
819 de_fault (to_set_disconnected_tracing
,
820 (void (*) (struct target_ops
*, int))
822 de_fault (to_set_circular_trace_buffer
,
823 (void (*) (struct target_ops
*, int))
825 de_fault (to_set_trace_buffer_size
,
826 (void (*) (struct target_ops
*, LONGEST
))
828 de_fault (to_set_trace_notes
,
829 (int (*) (struct target_ops
*,
830 const char *, const char *, const char *))
832 de_fault (to_get_tib_address
,
833 (int (*) (struct target_ops
*, ptid_t
, CORE_ADDR
*))
835 de_fault (to_set_permissions
,
836 (void (*) (struct target_ops
*))
838 de_fault (to_static_tracepoint_marker_at
,
839 (int (*) (struct target_ops
*,
840 CORE_ADDR
, struct static_tracepoint_marker
*))
842 de_fault (to_static_tracepoint_markers_by_strid
,
843 (VEC(static_tracepoint_marker_p
) * (*) (struct target_ops
*,
846 de_fault (to_traceframe_info
,
847 (struct traceframe_info
* (*) (struct target_ops
*))
849 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
850 (int (*) (struct target_ops
*))
852 de_fault (to_can_run_breakpoint_commands
,
853 (int (*) (struct target_ops
*))
855 de_fault (to_use_agent
,
856 (int (*) (struct target_ops
*, int))
858 de_fault (to_can_use_agent
,
859 (int (*) (struct target_ops
*))
861 de_fault (to_augmented_libraries_svr4_read
,
862 (int (*) (struct target_ops
*))
864 de_fault (to_execution_direction
, default_execution_direction
);
868 /* Finally, position the target-stack beneath the squashed
869 "current_target". That way code looking for a non-inherited
870 target method can quickly and simply find it. */
871 current_target
.beneath
= target_stack
;
874 setup_target_debug ();
877 /* Push a new target type into the stack of the existing target accessors,
878 possibly superseding some of the existing accessors.
880 Rather than allow an empty stack, we always have the dummy target at
881 the bottom stratum, so we can call the function vectors without
885 push_target (struct target_ops
*t
)
887 struct target_ops
**cur
;
889 /* Check magic number. If wrong, it probably means someone changed
890 the struct definition, but not all the places that initialize one. */
891 if (t
->to_magic
!= OPS_MAGIC
)
893 fprintf_unfiltered (gdb_stderr
,
894 "Magic number of %s target struct wrong\n",
896 internal_error (__FILE__
, __LINE__
,
897 _("failed internal consistency check"));
900 /* Find the proper stratum to install this target in. */
901 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
903 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
907 /* If there's already targets at this stratum, remove them. */
908 /* FIXME: cagney/2003-10-15: I think this should be popping all
909 targets to CUR, and not just those at this stratum level. */
910 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
912 /* There's already something at this stratum level. Close it,
913 and un-hook it from the stack. */
914 struct target_ops
*tmp
= (*cur
);
916 (*cur
) = (*cur
)->beneath
;
921 /* We have removed all targets in our stratum, now add the new one. */
925 update_current_target ();
928 /* Remove a target_ops vector from the stack, wherever it may be.
929 Return how many times it was removed (0 or 1). */
932 unpush_target (struct target_ops
*t
)
934 struct target_ops
**cur
;
935 struct target_ops
*tmp
;
937 if (t
->to_stratum
== dummy_stratum
)
938 internal_error (__FILE__
, __LINE__
,
939 _("Attempt to unpush the dummy target"));
941 /* Look for the specified target. Note that we assume that a target
942 can only occur once in the target stack. */
944 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
950 /* If we don't find target_ops, quit. Only open targets should be
955 /* Unchain the target. */
957 (*cur
) = (*cur
)->beneath
;
960 update_current_target ();
962 /* Finally close the target. Note we do this after unchaining, so
963 any target method calls from within the target_close
964 implementation don't end up in T anymore. */
971 pop_all_targets_above (enum strata above_stratum
)
973 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
975 if (!unpush_target (target_stack
))
977 fprintf_unfiltered (gdb_stderr
,
978 "pop_all_targets couldn't find target %s\n",
979 target_stack
->to_shortname
);
980 internal_error (__FILE__
, __LINE__
,
981 _("failed internal consistency check"));
988 pop_all_targets (void)
990 pop_all_targets_above (dummy_stratum
);
993 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
996 target_is_pushed (struct target_ops
*t
)
998 struct target_ops
**cur
;
1000 /* Check magic number. If wrong, it probably means someone changed
1001 the struct definition, but not all the places that initialize one. */
1002 if (t
->to_magic
!= OPS_MAGIC
)
1004 fprintf_unfiltered (gdb_stderr
,
1005 "Magic number of %s target struct wrong\n",
1007 internal_error (__FILE__
, __LINE__
,
1008 _("failed internal consistency check"));
1011 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1018 /* Using the objfile specified in OBJFILE, find the address for the
1019 current thread's thread-local storage with offset OFFSET. */
1021 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1023 volatile CORE_ADDR addr
= 0;
1024 struct target_ops
*target
;
1026 for (target
= current_target
.beneath
;
1028 target
= target
->beneath
)
1030 if (target
->to_get_thread_local_address
!= NULL
)
1035 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
1037 ptid_t ptid
= inferior_ptid
;
1038 volatile struct gdb_exception ex
;
1040 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1044 /* Fetch the load module address for this objfile. */
1045 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1047 /* If it's 0, throw the appropriate exception. */
1049 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1050 _("TLS load module not found"));
1052 addr
= target
->to_get_thread_local_address (target
, ptid
,
1055 /* If an error occurred, print TLS related messages here. Otherwise,
1056 throw the error to some higher catcher. */
1059 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1063 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1064 error (_("Cannot find thread-local variables "
1065 "in this thread library."));
1067 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1068 if (objfile_is_library
)
1069 error (_("Cannot find shared library `%s' in dynamic"
1070 " linker's load module list"), objfile_name (objfile
));
1072 error (_("Cannot find executable file `%s' in dynamic"
1073 " linker's load module list"), objfile_name (objfile
));
1075 case TLS_NOT_ALLOCATED_YET_ERROR
:
1076 if (objfile_is_library
)
1077 error (_("The inferior has not yet allocated storage for"
1078 " thread-local variables in\n"
1079 "the shared library `%s'\n"
1081 objfile_name (objfile
), target_pid_to_str (ptid
));
1083 error (_("The inferior has not yet allocated storage for"
1084 " thread-local variables in\n"
1085 "the executable `%s'\n"
1087 objfile_name (objfile
), target_pid_to_str (ptid
));
1089 case TLS_GENERIC_ERROR
:
1090 if (objfile_is_library
)
1091 error (_("Cannot find thread-local storage for %s, "
1092 "shared library %s:\n%s"),
1093 target_pid_to_str (ptid
),
1094 objfile_name (objfile
), ex
.message
);
1096 error (_("Cannot find thread-local storage for %s, "
1097 "executable file %s:\n%s"),
1098 target_pid_to_str (ptid
),
1099 objfile_name (objfile
), ex
.message
);
1102 throw_exception (ex
);
1107 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1108 TLS is an ABI-specific thing. But we don't do that yet. */
1110 error (_("Cannot find thread-local variables on this target"));
1116 target_xfer_status_to_string (enum target_xfer_status err
)
1118 #define CASE(X) case X: return #X
1121 CASE(TARGET_XFER_E_IO
);
1122 CASE(TARGET_XFER_E_UNAVAILABLE
);
1131 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1133 /* target_read_string -- read a null terminated string, up to LEN bytes,
1134 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1135 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1136 is responsible for freeing it. Return the number of bytes successfully
1140 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1142 int tlen
, offset
, i
;
1146 int buffer_allocated
;
1148 unsigned int nbytes_read
= 0;
1150 gdb_assert (string
);
1152 /* Small for testing. */
1153 buffer_allocated
= 4;
1154 buffer
= xmalloc (buffer_allocated
);
1159 tlen
= MIN (len
, 4 - (memaddr
& 3));
1160 offset
= memaddr
& 3;
1162 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1165 /* The transfer request might have crossed the boundary to an
1166 unallocated region of memory. Retry the transfer, requesting
1170 errcode
= target_read_memory (memaddr
, buf
, 1);
1175 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1179 bytes
= bufptr
- buffer
;
1180 buffer_allocated
*= 2;
1181 buffer
= xrealloc (buffer
, buffer_allocated
);
1182 bufptr
= buffer
+ bytes
;
1185 for (i
= 0; i
< tlen
; i
++)
1187 *bufptr
++ = buf
[i
+ offset
];
1188 if (buf
[i
+ offset
] == '\000')
1190 nbytes_read
+= i
+ 1;
1197 nbytes_read
+= tlen
;
1206 struct target_section_table
*
1207 target_get_section_table (struct target_ops
*target
)
1209 struct target_ops
*t
;
1212 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1214 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1215 if (t
->to_get_section_table
!= NULL
)
1216 return (*t
->to_get_section_table
) (t
);
1221 /* Find a section containing ADDR. */
1223 struct target_section
*
1224 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1226 struct target_section_table
*table
= target_get_section_table (target
);
1227 struct target_section
*secp
;
1232 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1234 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1240 /* Read memory from the live target, even if currently inspecting a
1241 traceframe. The return is the same as that of target_read. */
1243 static enum target_xfer_status
1244 target_read_live_memory (enum target_object object
,
1245 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1246 ULONGEST
*xfered_len
)
1248 enum target_xfer_status ret
;
1249 struct cleanup
*cleanup
;
1251 /* Switch momentarily out of tfind mode so to access live memory.
1252 Note that this must not clear global state, such as the frame
1253 cache, which must still remain valid for the previous traceframe.
1254 We may be _building_ the frame cache at this point. */
1255 cleanup
= make_cleanup_restore_traceframe_number ();
1256 set_traceframe_number (-1);
1258 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1259 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1261 do_cleanups (cleanup
);
1265 /* Using the set of read-only target sections of OPS, read live
1266 read-only memory. Note that the actual reads start from the
1267 top-most target again.
1269 For interface/parameters/return description see target.h,
1272 static enum target_xfer_status
1273 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1274 enum target_object object
,
1275 gdb_byte
*readbuf
, ULONGEST memaddr
,
1276 ULONGEST len
, ULONGEST
*xfered_len
)
1278 struct target_section
*secp
;
1279 struct target_section_table
*table
;
1281 secp
= target_section_by_addr (ops
, memaddr
);
1283 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1284 secp
->the_bfd_section
)
1287 struct target_section
*p
;
1288 ULONGEST memend
= memaddr
+ len
;
1290 table
= target_get_section_table (ops
);
1292 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1294 if (memaddr
>= p
->addr
)
1296 if (memend
<= p
->endaddr
)
1298 /* Entire transfer is within this section. */
1299 return target_read_live_memory (object
, memaddr
,
1300 readbuf
, len
, xfered_len
);
1302 else if (memaddr
>= p
->endaddr
)
1304 /* This section ends before the transfer starts. */
1309 /* This section overlaps the transfer. Just do half. */
1310 len
= p
->endaddr
- memaddr
;
1311 return target_read_live_memory (object
, memaddr
,
1312 readbuf
, len
, xfered_len
);
1318 return TARGET_XFER_EOF
;
1321 /* Read memory from more than one valid target. A core file, for
1322 instance, could have some of memory but delegate other bits to
1323 the target below it. So, we must manually try all targets. */
1325 static enum target_xfer_status
1326 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1327 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1328 ULONGEST
*xfered_len
)
1330 enum target_xfer_status res
;
1334 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1335 readbuf
, writebuf
, memaddr
, len
,
1337 if (res
== TARGET_XFER_OK
)
1340 /* Stop if the target reports that the memory is not available. */
1341 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1344 /* We want to continue past core files to executables, but not
1345 past a running target's memory. */
1346 if (ops
->to_has_all_memory (ops
))
1351 while (ops
!= NULL
);
1356 /* Perform a partial memory transfer.
1357 For docs see target.h, to_xfer_partial. */
1359 static enum target_xfer_status
1360 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1361 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1362 ULONGEST len
, ULONGEST
*xfered_len
)
1364 enum target_xfer_status res
;
1366 struct mem_region
*region
;
1367 struct inferior
*inf
;
1369 /* For accesses to unmapped overlay sections, read directly from
1370 files. Must do this first, as MEMADDR may need adjustment. */
1371 if (readbuf
!= NULL
&& overlay_debugging
)
1373 struct obj_section
*section
= find_pc_overlay (memaddr
);
1375 if (pc_in_unmapped_range (memaddr
, section
))
1377 struct target_section_table
*table
1378 = target_get_section_table (ops
);
1379 const char *section_name
= section
->the_bfd_section
->name
;
1381 memaddr
= overlay_mapped_address (memaddr
, section
);
1382 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1383 memaddr
, len
, xfered_len
,
1385 table
->sections_end
,
1390 /* Try the executable files, if "trust-readonly-sections" is set. */
1391 if (readbuf
!= NULL
&& trust_readonly
)
1393 struct target_section
*secp
;
1394 struct target_section_table
*table
;
1396 secp
= target_section_by_addr (ops
, memaddr
);
1398 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1399 secp
->the_bfd_section
)
1402 table
= target_get_section_table (ops
);
1403 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1404 memaddr
, len
, xfered_len
,
1406 table
->sections_end
,
1411 /* If reading unavailable memory in the context of traceframes, and
1412 this address falls within a read-only section, fallback to
1413 reading from live memory. */
1414 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1416 VEC(mem_range_s
) *available
;
1418 /* If we fail to get the set of available memory, then the
1419 target does not support querying traceframe info, and so we
1420 attempt reading from the traceframe anyway (assuming the
1421 target implements the old QTro packet then). */
1422 if (traceframe_available_memory (&available
, memaddr
, len
))
1424 struct cleanup
*old_chain
;
1426 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1428 if (VEC_empty (mem_range_s
, available
)
1429 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1431 /* Don't read into the traceframe's available
1433 if (!VEC_empty (mem_range_s
, available
))
1435 LONGEST oldlen
= len
;
1437 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1438 gdb_assert (len
<= oldlen
);
1441 do_cleanups (old_chain
);
1443 /* This goes through the topmost target again. */
1444 res
= memory_xfer_live_readonly_partial (ops
, object
,
1447 if (res
== TARGET_XFER_OK
)
1448 return TARGET_XFER_OK
;
1451 /* No use trying further, we know some memory starting
1452 at MEMADDR isn't available. */
1454 return TARGET_XFER_E_UNAVAILABLE
;
1458 /* Don't try to read more than how much is available, in
1459 case the target implements the deprecated QTro packet to
1460 cater for older GDBs (the target's knowledge of read-only
1461 sections may be outdated by now). */
1462 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1464 do_cleanups (old_chain
);
1468 /* Try GDB's internal data cache. */
1469 region
= lookup_mem_region (memaddr
);
1470 /* region->hi == 0 means there's no upper bound. */
1471 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1474 reg_len
= region
->hi
- memaddr
;
1476 switch (region
->attrib
.mode
)
1479 if (writebuf
!= NULL
)
1480 return TARGET_XFER_E_IO
;
1484 if (readbuf
!= NULL
)
1485 return TARGET_XFER_E_IO
;
1489 /* We only support writing to flash during "load" for now. */
1490 if (writebuf
!= NULL
)
1491 error (_("Writing to flash memory forbidden in this context"));
1495 return TARGET_XFER_E_IO
;
1498 if (!ptid_equal (inferior_ptid
, null_ptid
))
1499 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1504 /* The dcache reads whole cache lines; that doesn't play well
1505 with reading from a trace buffer, because reading outside of
1506 the collected memory range fails. */
1507 && get_traceframe_number () == -1
1508 && (region
->attrib
.cache
1509 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1510 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1512 DCACHE
*dcache
= target_dcache_get_or_init ();
1515 if (readbuf
!= NULL
)
1516 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1518 /* FIXME drow/2006-08-09: If we're going to preserve const
1519 correctness dcache_xfer_memory should take readbuf and
1521 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1524 return TARGET_XFER_E_IO
;
1527 *xfered_len
= (ULONGEST
) l
;
1528 return TARGET_XFER_OK
;
1532 /* If none of those methods found the memory we wanted, fall back
1533 to a target partial transfer. Normally a single call to
1534 to_xfer_partial is enough; if it doesn't recognize an object
1535 it will call the to_xfer_partial of the next target down.
1536 But for memory this won't do. Memory is the only target
1537 object which can be read from more than one valid target.
1538 A core file, for instance, could have some of memory but
1539 delegate other bits to the target below it. So, we must
1540 manually try all targets. */
1542 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1545 /* Make sure the cache gets updated no matter what - if we are writing
1546 to the stack. Even if this write is not tagged as such, we still need
1547 to update the cache. */
1549 if (res
== TARGET_XFER_OK
1552 && target_dcache_init_p ()
1553 && !region
->attrib
.cache
1554 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1555 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1557 DCACHE
*dcache
= target_dcache_get ();
1559 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1562 /* If we still haven't got anything, return the last error. We
1567 /* Perform a partial memory transfer. For docs see target.h,
1570 static enum target_xfer_status
1571 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1572 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1573 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1575 enum target_xfer_status res
;
1577 /* Zero length requests are ok and require no work. */
1579 return TARGET_XFER_EOF
;
1581 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1582 breakpoint insns, thus hiding out from higher layers whether
1583 there are software breakpoints inserted in the code stream. */
1584 if (readbuf
!= NULL
)
1586 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1589 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1590 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1595 struct cleanup
*old_chain
;
1597 /* A large write request is likely to be partially satisfied
1598 by memory_xfer_partial_1. We will continually malloc
1599 and free a copy of the entire write request for breakpoint
1600 shadow handling even though we only end up writing a small
1601 subset of it. Cap writes to 4KB to mitigate this. */
1602 len
= min (4096, len
);
1604 buf
= xmalloc (len
);
1605 old_chain
= make_cleanup (xfree
, buf
);
1606 memcpy (buf
, writebuf
, len
);
1608 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1609 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1612 do_cleanups (old_chain
);
1619 restore_show_memory_breakpoints (void *arg
)
1621 show_memory_breakpoints
= (uintptr_t) arg
;
1625 make_show_memory_breakpoints_cleanup (int show
)
1627 int current
= show_memory_breakpoints
;
1629 show_memory_breakpoints
= show
;
1630 return make_cleanup (restore_show_memory_breakpoints
,
1631 (void *) (uintptr_t) current
);
1634 /* For docs see target.h, to_xfer_partial. */
1636 enum target_xfer_status
1637 target_xfer_partial (struct target_ops
*ops
,
1638 enum target_object object
, const char *annex
,
1639 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1640 ULONGEST offset
, ULONGEST len
,
1641 ULONGEST
*xfered_len
)
1643 enum target_xfer_status retval
;
1645 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1647 /* Transfer is done when LEN is zero. */
1649 return TARGET_XFER_EOF
;
1651 if (writebuf
&& !may_write_memory
)
1652 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1653 core_addr_to_string_nz (offset
), plongest (len
));
1657 /* If this is a memory transfer, let the memory-specific code
1658 have a look at it instead. Memory transfers are more
1660 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1661 || object
== TARGET_OBJECT_CODE_MEMORY
)
1662 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1663 writebuf
, offset
, len
, xfered_len
);
1664 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1666 /* Request the normal memory object from other layers. */
1667 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1671 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1672 writebuf
, offset
, len
, xfered_len
);
1676 const unsigned char *myaddr
= NULL
;
1678 fprintf_unfiltered (gdb_stdlog
,
1679 "%s:target_xfer_partial "
1680 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1683 (annex
? annex
: "(null)"),
1684 host_address_to_string (readbuf
),
1685 host_address_to_string (writebuf
),
1686 core_addr_to_string_nz (offset
),
1687 pulongest (len
), retval
,
1688 pulongest (*xfered_len
));
1694 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1698 fputs_unfiltered (", bytes =", gdb_stdlog
);
1699 for (i
= 0; i
< *xfered_len
; i
++)
1701 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1703 if (targetdebug
< 2 && i
> 0)
1705 fprintf_unfiltered (gdb_stdlog
, " ...");
1708 fprintf_unfiltered (gdb_stdlog
, "\n");
1711 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1715 fputc_unfiltered ('\n', gdb_stdlog
);
1718 /* Check implementations of to_xfer_partial update *XFERED_LEN
1719 properly. Do assertion after printing debug messages, so that we
1720 can find more clues on assertion failure from debugging messages. */
1721 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1722 gdb_assert (*xfered_len
> 0);
1727 /* Read LEN bytes of target memory at address MEMADDR, placing the
1728 results in GDB's memory at MYADDR. Returns either 0 for success or
1729 TARGET_XFER_E_IO if any error occurs.
1731 If an error occurs, no guarantee is made about the contents of the data at
1732 MYADDR. In particular, the caller should not depend upon partial reads
1733 filling the buffer with good data. There is no way for the caller to know
1734 how much good data might have been transfered anyway. Callers that can
1735 deal with partial reads should call target_read (which will retry until
1736 it makes no progress, and then return how much was transferred). */
1739 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1741 /* Dispatch to the topmost target, not the flattened current_target.
1742 Memory accesses check target->to_has_(all_)memory, and the
1743 flattened target doesn't inherit those. */
1744 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1745 myaddr
, memaddr
, len
) == len
)
1748 return TARGET_XFER_E_IO
;
1751 /* Like target_read_memory, but specify explicitly that this is a read
1752 from the target's raw memory. That is, this read bypasses the
1753 dcache, breakpoint shadowing, etc. */
1756 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1758 /* See comment in target_read_memory about why the request starts at
1759 current_target.beneath. */
1760 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1761 myaddr
, memaddr
, len
) == len
)
1764 return TARGET_XFER_E_IO
;
1767 /* Like target_read_memory, but specify explicitly that this is a read from
1768 the target's stack. This may trigger different cache behavior. */
1771 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1773 /* See comment in target_read_memory about why the request starts at
1774 current_target.beneath. */
1775 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1776 myaddr
, memaddr
, len
) == len
)
1779 return TARGET_XFER_E_IO
;
1782 /* Like target_read_memory, but specify explicitly that this is a read from
1783 the target's code. This may trigger different cache behavior. */
1786 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1788 /* See comment in target_read_memory about why the request starts at
1789 current_target.beneath. */
1790 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1791 myaddr
, memaddr
, len
) == len
)
1794 return TARGET_XFER_E_IO
;
1797 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1798 Returns either 0 for success or TARGET_XFER_E_IO if any
1799 error occurs. If an error occurs, no guarantee is made about how
1800 much data got written. Callers that can deal with partial writes
1801 should call target_write. */
1804 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1806 /* See comment in target_read_memory about why the request starts at
1807 current_target.beneath. */
1808 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1809 myaddr
, memaddr
, len
) == len
)
1812 return TARGET_XFER_E_IO
;
1815 /* Write LEN bytes from MYADDR to target raw memory at address
1816 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1817 if any error occurs. If an error occurs, no guarantee is made
1818 about how much data got written. Callers that can deal with
1819 partial writes should call target_write. */
1822 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1824 /* See comment in target_read_memory about why the request starts at
1825 current_target.beneath. */
1826 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1827 myaddr
, memaddr
, len
) == len
)
1830 return TARGET_XFER_E_IO
;
1833 /* Fetch the target's memory map. */
1836 target_memory_map (void)
1838 VEC(mem_region_s
) *result
;
1839 struct mem_region
*last_one
, *this_one
;
1841 struct target_ops
*t
;
1844 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1846 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1847 if (t
->to_memory_map
!= NULL
)
1853 result
= t
->to_memory_map (t
);
1857 qsort (VEC_address (mem_region_s
, result
),
1858 VEC_length (mem_region_s
, result
),
1859 sizeof (struct mem_region
), mem_region_cmp
);
1861 /* Check that regions do not overlap. Simultaneously assign
1862 a numbering for the "mem" commands to use to refer to
1865 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1867 this_one
->number
= ix
;
1869 if (last_one
&& last_one
->hi
> this_one
->lo
)
1871 warning (_("Overlapping regions in memory map: ignoring"));
1872 VEC_free (mem_region_s
, result
);
1875 last_one
= this_one
;
1882 target_flash_erase (ULONGEST address
, LONGEST length
)
1884 struct target_ops
*t
;
1886 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1887 if (t
->to_flash_erase
!= NULL
)
1890 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1891 hex_string (address
), phex (length
, 0));
1892 t
->to_flash_erase (t
, address
, length
);
1900 target_flash_done (void)
1902 struct target_ops
*t
;
1904 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1905 if (t
->to_flash_done
!= NULL
)
1908 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1909 t
->to_flash_done (t
);
1917 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1918 struct cmd_list_element
*c
, const char *value
)
1920 fprintf_filtered (file
,
1921 _("Mode for reading from readonly sections is %s.\n"),
1925 /* More generic transfers. */
1927 static enum target_xfer_status
1928 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1929 const char *annex
, gdb_byte
*readbuf
,
1930 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1931 ULONGEST
*xfered_len
)
1933 if (object
== TARGET_OBJECT_MEMORY
1934 && ops
->deprecated_xfer_memory
!= NULL
)
1935 /* If available, fall back to the target's
1936 "deprecated_xfer_memory" method. */
1941 if (writebuf
!= NULL
)
1943 void *buffer
= xmalloc (len
);
1944 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1946 memcpy (buffer
, writebuf
, len
);
1947 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1948 1/*write*/, NULL
, ops
);
1949 do_cleanups (cleanup
);
1951 if (readbuf
!= NULL
)
1952 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1953 0/*read*/, NULL
, ops
);
1956 *xfered_len
= (ULONGEST
) xfered
;
1957 return TARGET_XFER_E_IO
;
1959 else if (xfered
== 0 && errno
== 0)
1960 /* "deprecated_xfer_memory" uses 0, cross checked against
1961 ERRNO as one indication of an error. */
1962 return TARGET_XFER_EOF
;
1964 return TARGET_XFER_E_IO
;
1968 gdb_assert (ops
->beneath
!= NULL
);
1969 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1970 readbuf
, writebuf
, offset
, len
,
1975 /* Target vector read/write partial wrapper functions. */
1977 static enum target_xfer_status
1978 target_read_partial (struct target_ops
*ops
,
1979 enum target_object object
,
1980 const char *annex
, gdb_byte
*buf
,
1981 ULONGEST offset
, ULONGEST len
,
1982 ULONGEST
*xfered_len
)
1984 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
1988 static enum target_xfer_status
1989 target_write_partial (struct target_ops
*ops
,
1990 enum target_object object
,
1991 const char *annex
, const gdb_byte
*buf
,
1992 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
1994 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
1998 /* Wrappers to perform the full transfer. */
2000 /* For docs on target_read see target.h. */
2003 target_read (struct target_ops
*ops
,
2004 enum target_object object
,
2005 const char *annex
, gdb_byte
*buf
,
2006 ULONGEST offset
, LONGEST len
)
2010 while (xfered
< len
)
2012 ULONGEST xfered_len
;
2013 enum target_xfer_status status
;
2015 status
= target_read_partial (ops
, object
, annex
,
2016 (gdb_byte
*) buf
+ xfered
,
2017 offset
+ xfered
, len
- xfered
,
2020 /* Call an observer, notifying them of the xfer progress? */
2021 if (status
== TARGET_XFER_EOF
)
2023 else if (status
== TARGET_XFER_OK
)
2025 xfered
+= xfered_len
;
2035 /* Assuming that the entire [begin, end) range of memory cannot be
2036 read, try to read whatever subrange is possible to read.
2038 The function returns, in RESULT, either zero or one memory block.
2039 If there's a readable subrange at the beginning, it is completely
2040 read and returned. Any further readable subrange will not be read.
2041 Otherwise, if there's a readable subrange at the end, it will be
2042 completely read and returned. Any readable subranges before it
2043 (obviously, not starting at the beginning), will be ignored. In
2044 other cases -- either no readable subrange, or readable subrange(s)
2045 that is neither at the beginning, or end, nothing is returned.
2047 The purpose of this function is to handle a read across a boundary
2048 of accessible memory in a case when memory map is not available.
2049 The above restrictions are fine for this case, but will give
2050 incorrect results if the memory is 'patchy'. However, supporting
2051 'patchy' memory would require trying to read every single byte,
2052 and it seems unacceptable solution. Explicit memory map is
2053 recommended for this case -- and target_read_memory_robust will
2054 take care of reading multiple ranges then. */
2057 read_whatever_is_readable (struct target_ops
*ops
,
2058 ULONGEST begin
, ULONGEST end
,
2059 VEC(memory_read_result_s
) **result
)
2061 gdb_byte
*buf
= xmalloc (end
- begin
);
2062 ULONGEST current_begin
= begin
;
2063 ULONGEST current_end
= end
;
2065 memory_read_result_s r
;
2066 ULONGEST xfered_len
;
2068 /* If we previously failed to read 1 byte, nothing can be done here. */
2069 if (end
- begin
<= 1)
2075 /* Check that either first or the last byte is readable, and give up
2076 if not. This heuristic is meant to permit reading accessible memory
2077 at the boundary of accessible region. */
2078 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2079 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
2084 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2085 buf
+ (end
-begin
) - 1, end
- 1, 1,
2086 &xfered_len
) == TARGET_XFER_OK
)
2097 /* Loop invariant is that the [current_begin, current_end) was previously
2098 found to be not readable as a whole.
2100 Note loop condition -- if the range has 1 byte, we can't divide the range
2101 so there's no point trying further. */
2102 while (current_end
- current_begin
> 1)
2104 ULONGEST first_half_begin
, first_half_end
;
2105 ULONGEST second_half_begin
, second_half_end
;
2107 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2111 first_half_begin
= current_begin
;
2112 first_half_end
= middle
;
2113 second_half_begin
= middle
;
2114 second_half_end
= current_end
;
2118 first_half_begin
= middle
;
2119 first_half_end
= current_end
;
2120 second_half_begin
= current_begin
;
2121 second_half_end
= middle
;
2124 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2125 buf
+ (first_half_begin
- begin
),
2127 first_half_end
- first_half_begin
);
2129 if (xfer
== first_half_end
- first_half_begin
)
2131 /* This half reads up fine. So, the error must be in the
2133 current_begin
= second_half_begin
;
2134 current_end
= second_half_end
;
2138 /* This half is not readable. Because we've tried one byte, we
2139 know some part of this half if actually redable. Go to the next
2140 iteration to divide again and try to read.
2142 We don't handle the other half, because this function only tries
2143 to read a single readable subrange. */
2144 current_begin
= first_half_begin
;
2145 current_end
= first_half_end
;
2151 /* The [begin, current_begin) range has been read. */
2153 r
.end
= current_begin
;
2158 /* The [current_end, end) range has been read. */
2159 LONGEST rlen
= end
- current_end
;
2161 r
.data
= xmalloc (rlen
);
2162 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2163 r
.begin
= current_end
;
2167 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2171 free_memory_read_result_vector (void *x
)
2173 VEC(memory_read_result_s
) *v
= x
;
2174 memory_read_result_s
*current
;
2177 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2179 xfree (current
->data
);
2181 VEC_free (memory_read_result_s
, v
);
2184 VEC(memory_read_result_s
) *
2185 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2187 VEC(memory_read_result_s
) *result
= 0;
2190 while (xfered
< len
)
2192 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2195 /* If there is no explicit region, a fake one should be created. */
2196 gdb_assert (region
);
2198 if (region
->hi
== 0)
2199 rlen
= len
- xfered
;
2201 rlen
= region
->hi
- offset
;
2203 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2205 /* Cannot read this region. Note that we can end up here only
2206 if the region is explicitly marked inaccessible, or
2207 'inaccessible-by-default' is in effect. */
2212 LONGEST to_read
= min (len
- xfered
, rlen
);
2213 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2215 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2216 (gdb_byte
*) buffer
,
2217 offset
+ xfered
, to_read
);
2218 /* Call an observer, notifying them of the xfer progress? */
2221 /* Got an error reading full chunk. See if maybe we can read
2224 read_whatever_is_readable (ops
, offset
+ xfered
,
2225 offset
+ xfered
+ to_read
, &result
);
2230 struct memory_read_result r
;
2232 r
.begin
= offset
+ xfered
;
2233 r
.end
= r
.begin
+ xfer
;
2234 VEC_safe_push (memory_read_result_s
, result
, &r
);
2244 /* An alternative to target_write with progress callbacks. */
2247 target_write_with_progress (struct target_ops
*ops
,
2248 enum target_object object
,
2249 const char *annex
, const gdb_byte
*buf
,
2250 ULONGEST offset
, LONGEST len
,
2251 void (*progress
) (ULONGEST
, void *), void *baton
)
2255 /* Give the progress callback a chance to set up. */
2257 (*progress
) (0, baton
);
2259 while (xfered
< len
)
2261 ULONGEST xfered_len
;
2262 enum target_xfer_status status
;
2264 status
= target_write_partial (ops
, object
, annex
,
2265 (gdb_byte
*) buf
+ xfered
,
2266 offset
+ xfered
, len
- xfered
,
2269 if (status
== TARGET_XFER_EOF
)
2271 if (TARGET_XFER_STATUS_ERROR_P (status
))
2274 gdb_assert (status
== TARGET_XFER_OK
);
2276 (*progress
) (xfered_len
, baton
);
2278 xfered
+= xfered_len
;
2284 /* For docs on target_write see target.h. */
2287 target_write (struct target_ops
*ops
,
2288 enum target_object object
,
2289 const char *annex
, const gdb_byte
*buf
,
2290 ULONGEST offset
, LONGEST len
)
2292 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2296 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2297 the size of the transferred data. PADDING additional bytes are
2298 available in *BUF_P. This is a helper function for
2299 target_read_alloc; see the declaration of that function for more
2303 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2304 const char *annex
, gdb_byte
**buf_p
, int padding
)
2306 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 ULONGEST xfered_len
;
2324 enum target_xfer_status status
;
2326 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2327 buf_pos
, buf_alloc
- buf_pos
- padding
,
2330 if (status
== TARGET_XFER_EOF
)
2332 /* Read all there was. */
2339 else if (status
!= TARGET_XFER_OK
)
2341 /* An error occurred. */
2343 return TARGET_XFER_E_IO
;
2346 buf_pos
+= xfered_len
;
2348 /* If the buffer is filling up, expand it. */
2349 if (buf_alloc
< buf_pos
* 2)
2352 buf
= xrealloc (buf
, buf_alloc
);
2359 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2360 the size of the transferred data. See the declaration in "target.h"
2361 function for more information about the return value. */
2364 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2365 const char *annex
, gdb_byte
**buf_p
)
2367 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2370 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2371 returned as a string, allocated using xmalloc. If an error occurs
2372 or the transfer is unsupported, NULL is returned. Empty objects
2373 are returned as allocated but empty strings. A warning is issued
2374 if the result contains any embedded NUL bytes. */
2377 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2382 LONGEST i
, transferred
;
2384 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2385 bufstr
= (char *) buffer
;
2387 if (transferred
< 0)
2390 if (transferred
== 0)
2391 return xstrdup ("");
2393 bufstr
[transferred
] = 0;
2395 /* Check for embedded NUL bytes; but allow trailing NULs. */
2396 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2399 warning (_("target object %d, annex %s, "
2400 "contained unexpected null characters"),
2401 (int) object
, annex
? annex
: "(none)");
2408 /* Memory transfer methods. */
2411 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2414 /* This method is used to read from an alternate, non-current
2415 target. This read must bypass the overlay support (as symbols
2416 don't match this target), and GDB's internal cache (wrong cache
2417 for this target). */
2418 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2420 memory_error (TARGET_XFER_E_IO
, addr
);
2424 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2425 int len
, enum bfd_endian byte_order
)
2427 gdb_byte buf
[sizeof (ULONGEST
)];
2429 gdb_assert (len
<= sizeof (buf
));
2430 get_target_memory (ops
, addr
, buf
, len
);
2431 return extract_unsigned_integer (buf
, len
, byte_order
);
2437 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2438 struct bp_target_info
*bp_tgt
)
2440 if (!may_insert_breakpoints
)
2442 warning (_("May not insert breakpoints"));
2446 return current_target
.to_insert_breakpoint (¤t_target
,
2453 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2454 struct bp_target_info
*bp_tgt
)
2456 /* This is kind of a weird case to handle, but the permission might
2457 have been changed after breakpoints were inserted - in which case
2458 we should just take the user literally and assume that any
2459 breakpoints should be left in place. */
2460 if (!may_insert_breakpoints
)
2462 warning (_("May not remove breakpoints"));
2466 return current_target
.to_remove_breakpoint (¤t_target
,
2471 target_info (char *args
, int from_tty
)
2473 struct target_ops
*t
;
2474 int has_all_mem
= 0;
2476 if (symfile_objfile
!= NULL
)
2477 printf_unfiltered (_("Symbols from \"%s\".\n"),
2478 objfile_name (symfile_objfile
));
2480 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2482 if (!(*t
->to_has_memory
) (t
))
2485 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2488 printf_unfiltered (_("\tWhile running this, "
2489 "GDB does not access memory from...\n"));
2490 printf_unfiltered ("%s:\n", t
->to_longname
);
2491 (t
->to_files_info
) (t
);
2492 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2496 /* This function is called before any new inferior is created, e.g.
2497 by running a program, attaching, or connecting to a target.
2498 It cleans up any state from previous invocations which might
2499 change between runs. This is a subset of what target_preopen
2500 resets (things which might change between targets). */
2503 target_pre_inferior (int from_tty
)
2505 /* Clear out solib state. Otherwise the solib state of the previous
2506 inferior might have survived and is entirely wrong for the new
2507 target. This has been observed on GNU/Linux using glibc 2.3. How
2519 Cannot access memory at address 0xdeadbeef
2522 /* In some OSs, the shared library list is the same/global/shared
2523 across inferiors. If code is shared between processes, so are
2524 memory regions and features. */
2525 if (!gdbarch_has_global_solist (target_gdbarch ()))
2527 no_shared_libraries (NULL
, from_tty
);
2529 invalidate_target_mem_regions ();
2531 target_clear_description ();
2534 agent_capability_invalidate ();
2537 /* Callback for iterate_over_inferiors. Gets rid of the given
2541 dispose_inferior (struct inferior
*inf
, void *args
)
2543 struct thread_info
*thread
;
2545 thread
= any_thread_of_process (inf
->pid
);
2548 switch_to_thread (thread
->ptid
);
2550 /* Core inferiors actually should be detached, not killed. */
2551 if (target_has_execution
)
2554 target_detach (NULL
, 0);
2560 /* This is to be called by the open routine before it does
2564 target_preopen (int from_tty
)
2568 if (have_inferiors ())
2571 || !have_live_inferiors ()
2572 || query (_("A program is being debugged already. Kill it? ")))
2573 iterate_over_inferiors (dispose_inferior
, NULL
);
2575 error (_("Program not killed."));
2578 /* Calling target_kill may remove the target from the stack. But if
2579 it doesn't (which seems like a win for UDI), remove it now. */
2580 /* Leave the exec target, though. The user may be switching from a
2581 live process to a core of the same program. */
2582 pop_all_targets_above (file_stratum
);
2584 target_pre_inferior (from_tty
);
2587 /* Detach a target after doing deferred register stores. */
2590 target_detach (const char *args
, int from_tty
)
2592 struct target_ops
* t
;
2594 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2595 /* Don't remove global breakpoints here. They're removed on
2596 disconnection from the target. */
2599 /* If we're in breakpoints-always-inserted mode, have to remove
2600 them before detaching. */
2601 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2603 prepare_for_detach ();
2605 current_target
.to_detach (¤t_target
, args
, from_tty
);
2607 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2612 target_disconnect (char *args
, int from_tty
)
2614 struct target_ops
*t
;
2616 /* If we're in breakpoints-always-inserted mode or if breakpoints
2617 are global across processes, we have to remove them before
2619 remove_breakpoints ();
2621 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2622 if (t
->to_disconnect
!= NULL
)
2625 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2627 t
->to_disconnect (t
, args
, from_tty
);
2635 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2637 struct target_ops
*t
;
2638 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2643 char *status_string
;
2644 char *options_string
;
2646 status_string
= target_waitstatus_to_string (status
);
2647 options_string
= target_options_to_string (options
);
2648 fprintf_unfiltered (gdb_stdlog
,
2649 "target_wait (%d, status, options={%s})"
2651 ptid_get_pid (ptid
), options_string
,
2652 ptid_get_pid (retval
), status_string
);
2653 xfree (status_string
);
2654 xfree (options_string
);
2661 target_pid_to_str (ptid_t ptid
)
2663 struct target_ops
*t
;
2665 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2667 if (t
->to_pid_to_str
!= NULL
)
2668 return (*t
->to_pid_to_str
) (t
, ptid
);
2671 return normal_pid_to_str (ptid
);
2675 target_thread_name (struct thread_info
*info
)
2677 return current_target
.to_thread_name (¤t_target
, info
);
2681 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2683 struct target_ops
*t
;
2685 target_dcache_invalidate ();
2687 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2689 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2690 ptid_get_pid (ptid
),
2691 step
? "step" : "continue",
2692 gdb_signal_to_name (signal
));
2694 registers_changed_ptid (ptid
);
2695 set_executing (ptid
, 1);
2696 set_running (ptid
, 1);
2697 clear_inline_frame_state (ptid
);
2701 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2703 struct target_ops
*t
;
2705 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2707 if (t
->to_pass_signals
!= NULL
)
2713 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2716 for (i
= 0; i
< numsigs
; i
++)
2717 if (pass_signals
[i
])
2718 fprintf_unfiltered (gdb_stdlog
, " %s",
2719 gdb_signal_to_name (i
));
2721 fprintf_unfiltered (gdb_stdlog
, " })\n");
2724 (*t
->to_pass_signals
) (t
, numsigs
, pass_signals
);
2731 target_program_signals (int numsigs
, unsigned char *program_signals
)
2733 struct target_ops
*t
;
2735 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2737 if (t
->to_program_signals
!= NULL
)
2743 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2746 for (i
= 0; i
< numsigs
; i
++)
2747 if (program_signals
[i
])
2748 fprintf_unfiltered (gdb_stdlog
, " %s",
2749 gdb_signal_to_name (i
));
2751 fprintf_unfiltered (gdb_stdlog
, " })\n");
2754 (*t
->to_program_signals
) (t
, numsigs
, program_signals
);
2760 /* Look through the list of possible targets for a target that can
2764 target_follow_fork (int follow_child
, int detach_fork
)
2766 struct target_ops
*t
;
2768 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2770 if (t
->to_follow_fork
!= NULL
)
2772 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2775 fprintf_unfiltered (gdb_stdlog
,
2776 "target_follow_fork (%d, %d) = %d\n",
2777 follow_child
, detach_fork
, retval
);
2782 /* Some target returned a fork event, but did not know how to follow it. */
2783 internal_error (__FILE__
, __LINE__
,
2784 _("could not find a target to follow fork"));
2788 target_mourn_inferior (void)
2790 struct target_ops
*t
;
2792 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2794 if (t
->to_mourn_inferior
!= NULL
)
2796 t
->to_mourn_inferior (t
);
2798 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2800 /* We no longer need to keep handles on any of the object files.
2801 Make sure to release them to avoid unnecessarily locking any
2802 of them while we're not actually debugging. */
2803 bfd_cache_close_all ();
2809 internal_error (__FILE__
, __LINE__
,
2810 _("could not find a target to follow mourn inferior"));
2813 /* Look for a target which can describe architectural features, starting
2814 from TARGET. If we find one, return its description. */
2816 const struct target_desc
*
2817 target_read_description (struct target_ops
*target
)
2819 struct target_ops
*t
;
2821 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2822 if (t
->to_read_description
!= NULL
)
2824 const struct target_desc
*tdesc
;
2826 tdesc
= t
->to_read_description (t
);
2834 /* The default implementation of to_search_memory.
2835 This implements a basic search of memory, reading target memory and
2836 performing the search here (as opposed to performing the search in on the
2837 target side with, for example, gdbserver). */
2840 simple_search_memory (struct target_ops
*ops
,
2841 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2842 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2843 CORE_ADDR
*found_addrp
)
2845 /* NOTE: also defined in find.c testcase. */
2846 #define SEARCH_CHUNK_SIZE 16000
2847 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2848 /* Buffer to hold memory contents for searching. */
2849 gdb_byte
*search_buf
;
2850 unsigned search_buf_size
;
2851 struct cleanup
*old_cleanups
;
2853 search_buf_size
= chunk_size
+ pattern_len
- 1;
2855 /* No point in trying to allocate a buffer larger than the search space. */
2856 if (search_space_len
< search_buf_size
)
2857 search_buf_size
= search_space_len
;
2859 search_buf
= malloc (search_buf_size
);
2860 if (search_buf
== NULL
)
2861 error (_("Unable to allocate memory to perform the search."));
2862 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2864 /* Prime the search buffer. */
2866 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2867 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2869 warning (_("Unable to access %s bytes of target "
2870 "memory at %s, halting search."),
2871 pulongest (search_buf_size
), hex_string (start_addr
));
2872 do_cleanups (old_cleanups
);
2876 /* Perform the search.
2878 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2879 When we've scanned N bytes we copy the trailing bytes to the start and
2880 read in another N bytes. */
2882 while (search_space_len
>= pattern_len
)
2884 gdb_byte
*found_ptr
;
2885 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2887 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2888 pattern
, pattern_len
);
2890 if (found_ptr
!= NULL
)
2892 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2894 *found_addrp
= found_addr
;
2895 do_cleanups (old_cleanups
);
2899 /* Not found in this chunk, skip to next chunk. */
2901 /* Don't let search_space_len wrap here, it's unsigned. */
2902 if (search_space_len
>= chunk_size
)
2903 search_space_len
-= chunk_size
;
2905 search_space_len
= 0;
2907 if (search_space_len
>= pattern_len
)
2909 unsigned keep_len
= search_buf_size
- chunk_size
;
2910 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2913 /* Copy the trailing part of the previous iteration to the front
2914 of the buffer for the next iteration. */
2915 gdb_assert (keep_len
== pattern_len
- 1);
2916 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2918 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2920 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2921 search_buf
+ keep_len
, read_addr
,
2922 nr_to_read
) != nr_to_read
)
2924 warning (_("Unable to access %s bytes of target "
2925 "memory at %s, halting search."),
2926 plongest (nr_to_read
),
2927 hex_string (read_addr
));
2928 do_cleanups (old_cleanups
);
2932 start_addr
+= chunk_size
;
2938 do_cleanups (old_cleanups
);
2942 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2943 sequence of bytes in PATTERN with length PATTERN_LEN.
2945 The result is 1 if found, 0 if not found, and -1 if there was an error
2946 requiring halting of the search (e.g. memory read error).
2947 If the pattern is found the address is recorded in FOUND_ADDRP. */
2950 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2951 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2952 CORE_ADDR
*found_addrp
)
2954 struct target_ops
*t
;
2957 /* We don't use INHERIT to set current_target.to_search_memory,
2958 so we have to scan the target stack and handle targetdebug
2962 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2963 hex_string (start_addr
));
2965 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2966 if (t
->to_search_memory
!= NULL
)
2971 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2972 pattern
, pattern_len
, found_addrp
);
2976 /* If a special version of to_search_memory isn't available, use the
2978 found
= simple_search_memory (current_target
.beneath
,
2979 start_addr
, search_space_len
,
2980 pattern
, pattern_len
, found_addrp
);
2984 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2989 /* Look through the currently pushed targets. If none of them will
2990 be able to restart the currently running process, issue an error
2994 target_require_runnable (void)
2996 struct target_ops
*t
;
2998 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3000 /* If this target knows how to create a new program, then
3001 assume we will still be able to after killing the current
3002 one. Either killing and mourning will not pop T, or else
3003 find_default_run_target will find it again. */
3004 if (t
->to_create_inferior
!= NULL
)
3007 /* Do not worry about thread_stratum targets that can not
3008 create inferiors. Assume they will be pushed again if
3009 necessary, and continue to the process_stratum. */
3010 if (t
->to_stratum
== thread_stratum
3011 || t
->to_stratum
== arch_stratum
)
3014 error (_("The \"%s\" target does not support \"run\". "
3015 "Try \"help target\" or \"continue\"."),
3019 /* This function is only called if the target is running. In that
3020 case there should have been a process_stratum target and it
3021 should either know how to create inferiors, or not... */
3022 internal_error (__FILE__
, __LINE__
, _("No targets found"));
3025 /* Look through the list of possible targets for a target that can
3026 execute a run or attach command without any other data. This is
3027 used to locate the default process stratum.
3029 If DO_MESG is not NULL, the result is always valid (error() is
3030 called for errors); else, return NULL on error. */
3032 static struct target_ops
*
3033 find_default_run_target (char *do_mesg
)
3035 struct target_ops
**t
;
3036 struct target_ops
*runable
= NULL
;
3041 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3044 if ((*t
)->to_can_run
&& target_can_run (*t
))
3054 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3063 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3065 struct target_ops
*t
;
3067 t
= find_default_run_target ("attach");
3068 (t
->to_attach
) (t
, args
, from_tty
);
3073 find_default_create_inferior (struct target_ops
*ops
,
3074 char *exec_file
, char *allargs
, char **env
,
3077 struct target_ops
*t
;
3079 t
= find_default_run_target ("run");
3080 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3085 find_default_can_async_p (struct target_ops
*ignore
)
3087 struct target_ops
*t
;
3089 /* This may be called before the target is pushed on the stack;
3090 look for the default process stratum. If there's none, gdb isn't
3091 configured with a native debugger, and target remote isn't
3093 t
= find_default_run_target (NULL
);
3094 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
3095 return (t
->to_can_async_p
) (t
);
3100 find_default_is_async_p (struct target_ops
*ignore
)
3102 struct target_ops
*t
;
3104 /* This may be called before the target is pushed on the stack;
3105 look for the default process stratum. If there's none, gdb isn't
3106 configured with a native debugger, and target remote isn't
3108 t
= find_default_run_target (NULL
);
3109 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
3110 return (t
->to_is_async_p
) (t
);
3115 find_default_supports_non_stop (struct target_ops
*self
)
3117 struct target_ops
*t
;
3119 t
= find_default_run_target (NULL
);
3120 if (t
&& t
->to_supports_non_stop
)
3121 return (t
->to_supports_non_stop
) (t
);
3126 target_supports_non_stop (void)
3128 struct target_ops
*t
;
3130 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3131 if (t
->to_supports_non_stop
)
3132 return t
->to_supports_non_stop (t
);
3137 /* Implement the "info proc" command. */
3140 target_info_proc (char *args
, enum info_proc_what what
)
3142 struct target_ops
*t
;
3144 /* If we're already connected to something that can get us OS
3145 related data, use it. Otherwise, try using the native
3147 if (current_target
.to_stratum
>= process_stratum
)
3148 t
= current_target
.beneath
;
3150 t
= find_default_run_target (NULL
);
3152 for (; t
!= NULL
; t
= t
->beneath
)
3154 if (t
->to_info_proc
!= NULL
)
3156 t
->to_info_proc (t
, args
, what
);
3159 fprintf_unfiltered (gdb_stdlog
,
3160 "target_info_proc (\"%s\", %d)\n", args
, what
);
3170 find_default_supports_disable_randomization (struct target_ops
*self
)
3172 struct target_ops
*t
;
3174 t
= find_default_run_target (NULL
);
3175 if (t
&& t
->to_supports_disable_randomization
)
3176 return (t
->to_supports_disable_randomization
) (t
);
3181 target_supports_disable_randomization (void)
3183 struct target_ops
*t
;
3185 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3186 if (t
->to_supports_disable_randomization
)
3187 return t
->to_supports_disable_randomization (t
);
3193 target_get_osdata (const char *type
)
3195 struct target_ops
*t
;
3197 /* If we're already connected to something that can get us OS
3198 related data, use it. Otherwise, try using the native
3200 if (current_target
.to_stratum
>= process_stratum
)
3201 t
= current_target
.beneath
;
3203 t
= find_default_run_target ("get OS data");
3208 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3211 /* Determine the current address space of thread PTID. */
3213 struct address_space
*
3214 target_thread_address_space (ptid_t ptid
)
3216 struct address_space
*aspace
;
3217 struct inferior
*inf
;
3218 struct target_ops
*t
;
3220 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3222 if (t
->to_thread_address_space
!= NULL
)
3224 aspace
= t
->to_thread_address_space (t
, ptid
);
3225 gdb_assert (aspace
);
3228 fprintf_unfiltered (gdb_stdlog
,
3229 "target_thread_address_space (%s) = %d\n",
3230 target_pid_to_str (ptid
),
3231 address_space_num (aspace
));
3236 /* Fall-back to the "main" address space of the inferior. */
3237 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3239 if (inf
== NULL
|| inf
->aspace
== NULL
)
3240 internal_error (__FILE__
, __LINE__
,
3241 _("Can't determine the current "
3242 "address space of thread %s\n"),
3243 target_pid_to_str (ptid
));
3249 /* Target file operations. */
3251 static struct target_ops
*
3252 default_fileio_target (void)
3254 /* If we're already connected to something that can perform
3255 file I/O, use it. Otherwise, try using the native target. */
3256 if (current_target
.to_stratum
>= process_stratum
)
3257 return current_target
.beneath
;
3259 return find_default_run_target ("file I/O");
3262 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3263 target file descriptor, or -1 if an error occurs (and set
3266 target_fileio_open (const char *filename
, int flags
, int mode
,
3269 struct target_ops
*t
;
3271 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3273 if (t
->to_fileio_open
!= NULL
)
3275 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3278 fprintf_unfiltered (gdb_stdlog
,
3279 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3280 filename
, flags
, mode
,
3281 fd
, fd
!= -1 ? 0 : *target_errno
);
3286 *target_errno
= FILEIO_ENOSYS
;
3290 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3291 Return the number of bytes written, or -1 if an error occurs
3292 (and set *TARGET_ERRNO). */
3294 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3295 ULONGEST offset
, int *target_errno
)
3297 struct target_ops
*t
;
3299 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3301 if (t
->to_fileio_pwrite
!= NULL
)
3303 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3307 fprintf_unfiltered (gdb_stdlog
,
3308 "target_fileio_pwrite (%d,...,%d,%s) "
3310 fd
, len
, pulongest (offset
),
3311 ret
, ret
!= -1 ? 0 : *target_errno
);
3316 *target_errno
= FILEIO_ENOSYS
;
3320 /* Read up to LEN bytes FD on the target into READ_BUF.
3321 Return the number of bytes read, or -1 if an error occurs
3322 (and set *TARGET_ERRNO). */
3324 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3325 ULONGEST offset
, int *target_errno
)
3327 struct target_ops
*t
;
3329 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3331 if (t
->to_fileio_pread
!= NULL
)
3333 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3337 fprintf_unfiltered (gdb_stdlog
,
3338 "target_fileio_pread (%d,...,%d,%s) "
3340 fd
, len
, pulongest (offset
),
3341 ret
, ret
!= -1 ? 0 : *target_errno
);
3346 *target_errno
= FILEIO_ENOSYS
;
3350 /* Close FD on the target. Return 0, or -1 if an error occurs
3351 (and set *TARGET_ERRNO). */
3353 target_fileio_close (int fd
, int *target_errno
)
3355 struct target_ops
*t
;
3357 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3359 if (t
->to_fileio_close
!= NULL
)
3361 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3364 fprintf_unfiltered (gdb_stdlog
,
3365 "target_fileio_close (%d) = %d (%d)\n",
3366 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3371 *target_errno
= FILEIO_ENOSYS
;
3375 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3376 occurs (and set *TARGET_ERRNO). */
3378 target_fileio_unlink (const char *filename
, int *target_errno
)
3380 struct target_ops
*t
;
3382 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3384 if (t
->to_fileio_unlink
!= NULL
)
3386 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3389 fprintf_unfiltered (gdb_stdlog
,
3390 "target_fileio_unlink (%s) = %d (%d)\n",
3391 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3396 *target_errno
= FILEIO_ENOSYS
;
3400 /* Read value of symbolic link FILENAME on the target. Return a
3401 null-terminated string allocated via xmalloc, or NULL if an error
3402 occurs (and set *TARGET_ERRNO). */
3404 target_fileio_readlink (const char *filename
, int *target_errno
)
3406 struct target_ops
*t
;
3408 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3410 if (t
->to_fileio_readlink
!= NULL
)
3412 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3415 fprintf_unfiltered (gdb_stdlog
,
3416 "target_fileio_readlink (%s) = %s (%d)\n",
3417 filename
, ret
? ret
: "(nil)",
3418 ret
? 0 : *target_errno
);
3423 *target_errno
= FILEIO_ENOSYS
;
3428 target_fileio_close_cleanup (void *opaque
)
3430 int fd
= *(int *) opaque
;
3433 target_fileio_close (fd
, &target_errno
);
3436 /* Read target file FILENAME. Store the result in *BUF_P and
3437 return the size of the transferred data. PADDING additional bytes are
3438 available in *BUF_P. This is a helper function for
3439 target_fileio_read_alloc; see the declaration of that function for more
3443 target_fileio_read_alloc_1 (const char *filename
,
3444 gdb_byte
**buf_p
, int padding
)
3446 struct cleanup
*close_cleanup
;
3447 size_t buf_alloc
, buf_pos
;
3453 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3457 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3459 /* Start by reading up to 4K at a time. The target will throttle
3460 this number down if necessary. */
3462 buf
= xmalloc (buf_alloc
);
3466 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3467 buf_alloc
- buf_pos
- padding
, buf_pos
,
3471 /* An error occurred. */
3472 do_cleanups (close_cleanup
);
3478 /* Read all there was. */
3479 do_cleanups (close_cleanup
);
3489 /* If the buffer is filling up, expand it. */
3490 if (buf_alloc
< buf_pos
* 2)
3493 buf
= xrealloc (buf
, buf_alloc
);
3500 /* Read target file FILENAME. Store the result in *BUF_P and return
3501 the size of the transferred data. See the declaration in "target.h"
3502 function for more information about the return value. */
3505 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3507 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3510 /* Read target file FILENAME. The result is NUL-terminated and
3511 returned as a string, allocated using xmalloc. If an error occurs
3512 or the transfer is unsupported, NULL is returned. Empty objects
3513 are returned as allocated but empty strings. A warning is issued
3514 if the result contains any embedded NUL bytes. */
3517 target_fileio_read_stralloc (const char *filename
)
3521 LONGEST i
, transferred
;
3523 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3524 bufstr
= (char *) buffer
;
3526 if (transferred
< 0)
3529 if (transferred
== 0)
3530 return xstrdup ("");
3532 bufstr
[transferred
] = 0;
3534 /* Check for embedded NUL bytes; but allow trailing NULs. */
3535 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3538 warning (_("target file %s "
3539 "contained unexpected null characters"),
3549 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3550 CORE_ADDR addr
, int len
)
3552 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3556 default_watchpoint_addr_within_range (struct target_ops
*target
,
3558 CORE_ADDR start
, int length
)
3560 return addr
>= start
&& addr
< start
+ length
;
3563 static struct gdbarch
*
3564 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3566 return target_gdbarch ();
3576 return_minus_one (void)
3588 * Find the next target down the stack from the specified target.
3592 find_target_beneath (struct target_ops
*t
)
3600 find_target_at (enum strata stratum
)
3602 struct target_ops
*t
;
3604 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3605 if (t
->to_stratum
== stratum
)
3612 /* The inferior process has died. Long live the inferior! */
3615 generic_mourn_inferior (void)
3619 ptid
= inferior_ptid
;
3620 inferior_ptid
= null_ptid
;
3622 /* Mark breakpoints uninserted in case something tries to delete a
3623 breakpoint while we delete the inferior's threads (which would
3624 fail, since the inferior is long gone). */
3625 mark_breakpoints_out ();
3627 if (!ptid_equal (ptid
, null_ptid
))
3629 int pid
= ptid_get_pid (ptid
);
3630 exit_inferior (pid
);
3633 /* Note this wipes step-resume breakpoints, so needs to be done
3634 after exit_inferior, which ends up referencing the step-resume
3635 breakpoints through clear_thread_inferior_resources. */
3636 breakpoint_init_inferior (inf_exited
);
3638 registers_changed ();
3640 reopen_exec_file ();
3641 reinit_frame_cache ();
3643 if (deprecated_detach_hook
)
3644 deprecated_detach_hook ();
3647 /* Convert a normal process ID to a string. Returns the string in a
3651 normal_pid_to_str (ptid_t ptid
)
3653 static char buf
[32];
3655 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3660 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3662 return normal_pid_to_str (ptid
);
3665 /* Error-catcher for target_find_memory_regions. */
3667 dummy_find_memory_regions (struct target_ops
*self
,
3668 find_memory_region_ftype ignore1
, void *ignore2
)
3670 error (_("Command not implemented for this target."));
3674 /* Error-catcher for target_make_corefile_notes. */
3676 dummy_make_corefile_notes (struct target_ops
*self
,
3677 bfd
*ignore1
, int *ignore2
)
3679 error (_("Command not implemented for this target."));
3683 /* Set up the handful of non-empty slots needed by the dummy target
3687 init_dummy_target (void)
3689 dummy_target
.to_shortname
= "None";
3690 dummy_target
.to_longname
= "None";
3691 dummy_target
.to_doc
= "";
3692 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3693 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3694 dummy_target
.to_supports_disable_randomization
3695 = find_default_supports_disable_randomization
;
3696 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3697 dummy_target
.to_stratum
= dummy_stratum
;
3698 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3699 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3700 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3701 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3702 dummy_target
.to_has_execution
3703 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3704 dummy_target
.to_magic
= OPS_MAGIC
;
3706 install_dummy_methods (&dummy_target
);
3710 debug_to_open (char *args
, int from_tty
)
3712 debug_target
.to_open (args
, from_tty
);
3714 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3718 target_close (struct target_ops
*targ
)
3720 gdb_assert (!target_is_pushed (targ
));
3722 if (targ
->to_xclose
!= NULL
)
3723 targ
->to_xclose (targ
);
3724 else if (targ
->to_close
!= NULL
)
3725 targ
->to_close (targ
);
3728 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3732 target_attach (char *args
, int from_tty
)
3734 current_target
.to_attach (¤t_target
, args
, from_tty
);
3736 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3741 target_thread_alive (ptid_t ptid
)
3743 struct target_ops
*t
;
3745 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3747 if (t
->to_thread_alive
!= NULL
)
3751 retval
= t
->to_thread_alive (t
, ptid
);
3753 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3754 ptid_get_pid (ptid
), retval
);
3764 target_find_new_threads (void)
3766 struct target_ops
*t
;
3768 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3770 if (t
->to_find_new_threads
!= NULL
)
3772 t
->to_find_new_threads (t
);
3774 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3782 target_stop (ptid_t ptid
)
3786 warning (_("May not interrupt or stop the target, ignoring attempt"));
3790 (*current_target
.to_stop
) (¤t_target
, ptid
);
3794 debug_to_post_attach (struct target_ops
*self
, int pid
)
3796 debug_target
.to_post_attach (&debug_target
, pid
);
3798 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3801 /* Concatenate ELEM to LIST, a comma separate list, and return the
3802 result. The LIST incoming argument is released. */
3805 str_comma_list_concat_elem (char *list
, const char *elem
)
3808 return xstrdup (elem
);
3810 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3813 /* Helper for target_options_to_string. If OPT is present in
3814 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3815 Returns the new resulting string. OPT is removed from
3819 do_option (int *target_options
, char *ret
,
3820 int opt
, char *opt_str
)
3822 if ((*target_options
& opt
) != 0)
3824 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3825 *target_options
&= ~opt
;
3832 target_options_to_string (int target_options
)
3836 #define DO_TARG_OPTION(OPT) \
3837 ret = do_option (&target_options, ret, OPT, #OPT)
3839 DO_TARG_OPTION (TARGET_WNOHANG
);
3841 if (target_options
!= 0)
3842 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3850 debug_print_register (const char * func
,
3851 struct regcache
*regcache
, int regno
)
3853 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3855 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3856 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3857 && gdbarch_register_name (gdbarch
, regno
) != NULL
3858 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3859 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3860 gdbarch_register_name (gdbarch
, regno
));
3862 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3863 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3865 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3866 int i
, size
= register_size (gdbarch
, regno
);
3867 gdb_byte buf
[MAX_REGISTER_SIZE
];
3869 regcache_raw_collect (regcache
, regno
, buf
);
3870 fprintf_unfiltered (gdb_stdlog
, " = ");
3871 for (i
= 0; i
< size
; i
++)
3873 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3875 if (size
<= sizeof (LONGEST
))
3877 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3879 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3880 core_addr_to_string_nz (val
), plongest (val
));
3883 fprintf_unfiltered (gdb_stdlog
, "\n");
3887 target_fetch_registers (struct regcache
*regcache
, int regno
)
3889 struct target_ops
*t
;
3891 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3893 if (t
->to_fetch_registers
!= NULL
)
3895 t
->to_fetch_registers (t
, regcache
, regno
);
3897 debug_print_register ("target_fetch_registers", regcache
, regno
);
3904 target_store_registers (struct regcache
*regcache
, int regno
)
3906 struct target_ops
*t
;
3908 if (!may_write_registers
)
3909 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3911 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3914 debug_print_register ("target_store_registers", regcache
, regno
);
3919 target_core_of_thread (ptid_t ptid
)
3921 struct target_ops
*t
;
3923 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3925 if (t
->to_core_of_thread
!= NULL
)
3927 int retval
= t
->to_core_of_thread (t
, ptid
);
3930 fprintf_unfiltered (gdb_stdlog
,
3931 "target_core_of_thread (%d) = %d\n",
3932 ptid_get_pid (ptid
), retval
);
3941 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3943 struct target_ops
*t
;
3945 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3947 if (t
->to_verify_memory
!= NULL
)
3949 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3952 fprintf_unfiltered (gdb_stdlog
,
3953 "target_verify_memory (%s, %s) = %d\n",
3954 paddress (target_gdbarch (), memaddr
),
3964 /* The documentation for this function is in its prototype declaration in
3968 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3970 struct target_ops
*t
;
3972 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3973 if (t
->to_insert_mask_watchpoint
!= NULL
)
3977 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
3980 fprintf_unfiltered (gdb_stdlog
, "\
3981 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3982 core_addr_to_string (addr
),
3983 core_addr_to_string (mask
), rw
, ret
);
3991 /* The documentation for this function is in its prototype declaration in
3995 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3997 struct target_ops
*t
;
3999 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4000 if (t
->to_remove_mask_watchpoint
!= NULL
)
4004 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
4007 fprintf_unfiltered (gdb_stdlog
, "\
4008 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
4009 core_addr_to_string (addr
),
4010 core_addr_to_string (mask
), rw
, ret
);
4018 /* The documentation for this function is in its prototype declaration
4022 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4024 struct target_ops
*t
;
4026 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4027 if (t
->to_masked_watch_num_registers
!= NULL
)
4028 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4033 /* The documentation for this function is in its prototype declaration
4037 target_ranged_break_num_registers (void)
4039 struct target_ops
*t
;
4041 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4042 if (t
->to_ranged_break_num_registers
!= NULL
)
4043 return t
->to_ranged_break_num_registers (t
);
4050 struct btrace_target_info
*
4051 target_enable_btrace (ptid_t ptid
)
4053 struct target_ops
*t
;
4055 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4056 if (t
->to_enable_btrace
!= NULL
)
4057 return t
->to_enable_btrace (t
, ptid
);
4066 target_disable_btrace (struct btrace_target_info
*btinfo
)
4068 struct target_ops
*t
;
4070 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4071 if (t
->to_disable_btrace
!= NULL
)
4073 t
->to_disable_btrace (t
, btinfo
);
4083 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4085 struct target_ops
*t
;
4087 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4088 if (t
->to_teardown_btrace
!= NULL
)
4090 t
->to_teardown_btrace (t
, btinfo
);
4100 target_read_btrace (VEC (btrace_block_s
) **btrace
,
4101 struct btrace_target_info
*btinfo
,
4102 enum btrace_read_type type
)
4104 struct target_ops
*t
;
4106 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4107 if (t
->to_read_btrace
!= NULL
)
4108 return t
->to_read_btrace (t
, btrace
, btinfo
, type
);
4111 return BTRACE_ERR_NOT_SUPPORTED
;
4117 target_stop_recording (void)
4119 struct target_ops
*t
;
4121 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4122 if (t
->to_stop_recording
!= NULL
)
4124 t
->to_stop_recording (t
);
4128 /* This is optional. */
4134 target_info_record (void)
4136 struct target_ops
*t
;
4138 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4139 if (t
->to_info_record
!= NULL
)
4141 t
->to_info_record (t
);
4151 target_save_record (const char *filename
)
4153 struct target_ops
*t
;
4155 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4156 if (t
->to_save_record
!= NULL
)
4158 t
->to_save_record (t
, filename
);
4168 target_supports_delete_record (void)
4170 struct target_ops
*t
;
4172 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4173 if (t
->to_delete_record
!= NULL
)
4182 target_delete_record (void)
4184 struct target_ops
*t
;
4186 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4187 if (t
->to_delete_record
!= NULL
)
4189 t
->to_delete_record (t
);
4199 target_record_is_replaying (void)
4201 struct target_ops
*t
;
4203 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4204 if (t
->to_record_is_replaying
!= NULL
)
4205 return t
->to_record_is_replaying (t
);
4213 target_goto_record_begin (void)
4215 struct target_ops
*t
;
4217 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4218 if (t
->to_goto_record_begin
!= NULL
)
4220 t
->to_goto_record_begin (t
);
4230 target_goto_record_end (void)
4232 struct target_ops
*t
;
4234 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4235 if (t
->to_goto_record_end
!= NULL
)
4237 t
->to_goto_record_end (t
);
4247 target_goto_record (ULONGEST insn
)
4249 struct target_ops
*t
;
4251 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4252 if (t
->to_goto_record
!= NULL
)
4254 t
->to_goto_record (t
, insn
);
4264 target_insn_history (int size
, int flags
)
4266 struct target_ops
*t
;
4268 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4269 if (t
->to_insn_history
!= NULL
)
4271 t
->to_insn_history (t
, size
, flags
);
4281 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4283 struct target_ops
*t
;
4285 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4286 if (t
->to_insn_history_from
!= NULL
)
4288 t
->to_insn_history_from (t
, from
, size
, flags
);
4298 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4300 struct target_ops
*t
;
4302 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4303 if (t
->to_insn_history_range
!= NULL
)
4305 t
->to_insn_history_range (t
, begin
, end
, flags
);
4315 target_call_history (int size
, int flags
)
4317 struct target_ops
*t
;
4319 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4320 if (t
->to_call_history
!= NULL
)
4322 t
->to_call_history (t
, size
, flags
);
4332 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4334 struct target_ops
*t
;
4336 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4337 if (t
->to_call_history_from
!= NULL
)
4339 t
->to_call_history_from (t
, begin
, size
, flags
);
4349 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4351 struct target_ops
*t
;
4353 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4354 if (t
->to_call_history_range
!= NULL
)
4356 t
->to_call_history_range (t
, begin
, end
, flags
);
4364 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
4366 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
4368 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4373 const struct frame_unwind
*
4374 target_get_unwinder (void)
4376 struct target_ops
*t
;
4378 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4379 if (t
->to_get_unwinder
!= NULL
)
4380 return t
->to_get_unwinder
;
4387 const struct frame_unwind
*
4388 target_get_tailcall_unwinder (void)
4390 struct target_ops
*t
;
4392 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4393 if (t
->to_get_tailcall_unwinder
!= NULL
)
4394 return t
->to_get_tailcall_unwinder
;
4402 forward_target_decr_pc_after_break (struct target_ops
*ops
,
4403 struct gdbarch
*gdbarch
)
4405 for (; ops
!= NULL
; ops
= ops
->beneath
)
4406 if (ops
->to_decr_pc_after_break
!= NULL
)
4407 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
4409 return gdbarch_decr_pc_after_break (gdbarch
);
4415 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
4417 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
4421 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4422 int write
, struct mem_attrib
*attrib
,
4423 struct target_ops
*target
)
4427 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4430 fprintf_unfiltered (gdb_stdlog
,
4431 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4432 paddress (target_gdbarch (), memaddr
), len
,
4433 write
? "write" : "read", retval
);
4439 fputs_unfiltered (", bytes =", gdb_stdlog
);
4440 for (i
= 0; i
< retval
; i
++)
4442 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4444 if (targetdebug
< 2 && i
> 0)
4446 fprintf_unfiltered (gdb_stdlog
, " ...");
4449 fprintf_unfiltered (gdb_stdlog
, "\n");
4452 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4456 fputc_unfiltered ('\n', gdb_stdlog
);
4462 debug_to_files_info (struct target_ops
*target
)
4464 debug_target
.to_files_info (target
);
4466 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4470 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4471 struct bp_target_info
*bp_tgt
)
4475 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4477 fprintf_unfiltered (gdb_stdlog
,
4478 "target_insert_breakpoint (%s, xxx) = %ld\n",
4479 core_addr_to_string (bp_tgt
->placed_address
),
4480 (unsigned long) retval
);
4485 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4486 struct bp_target_info
*bp_tgt
)
4490 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4492 fprintf_unfiltered (gdb_stdlog
,
4493 "target_remove_breakpoint (%s, xxx) = %ld\n",
4494 core_addr_to_string (bp_tgt
->placed_address
),
4495 (unsigned long) retval
);
4500 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4501 int type
, int cnt
, int from_tty
)
4505 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4506 type
, cnt
, from_tty
);
4508 fprintf_unfiltered (gdb_stdlog
,
4509 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4510 (unsigned long) type
,
4511 (unsigned long) cnt
,
4512 (unsigned long) from_tty
,
4513 (unsigned long) retval
);
4518 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4519 CORE_ADDR addr
, int len
)
4523 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4526 fprintf_unfiltered (gdb_stdlog
,
4527 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4528 core_addr_to_string (addr
), (unsigned long) len
,
4529 core_addr_to_string (retval
));
4534 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4535 CORE_ADDR addr
, int len
, int rw
,
4536 struct expression
*cond
)
4540 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4544 fprintf_unfiltered (gdb_stdlog
,
4545 "target_can_accel_watchpoint_condition "
4546 "(%s, %d, %d, %s) = %ld\n",
4547 core_addr_to_string (addr
), len
, rw
,
4548 host_address_to_string (cond
), (unsigned long) retval
);
4553 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4557 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4559 fprintf_unfiltered (gdb_stdlog
,
4560 "target_stopped_by_watchpoint () = %ld\n",
4561 (unsigned long) retval
);
4566 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4570 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4572 fprintf_unfiltered (gdb_stdlog
,
4573 "target_stopped_data_address ([%s]) = %ld\n",
4574 core_addr_to_string (*addr
),
4575 (unsigned long)retval
);
4580 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4582 CORE_ADDR start
, int length
)
4586 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4589 fprintf_filtered (gdb_stdlog
,
4590 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4591 core_addr_to_string (addr
), core_addr_to_string (start
),
4597 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4598 struct gdbarch
*gdbarch
,
4599 struct bp_target_info
*bp_tgt
)
4603 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4606 fprintf_unfiltered (gdb_stdlog
,
4607 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4608 core_addr_to_string (bp_tgt
->placed_address
),
4609 (unsigned long) retval
);
4614 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4615 struct gdbarch
*gdbarch
,
4616 struct bp_target_info
*bp_tgt
)
4620 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4623 fprintf_unfiltered (gdb_stdlog
,
4624 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4625 core_addr_to_string (bp_tgt
->placed_address
),
4626 (unsigned long) retval
);
4631 debug_to_insert_watchpoint (struct target_ops
*self
,
4632 CORE_ADDR addr
, int len
, int type
,
4633 struct expression
*cond
)
4637 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4638 addr
, len
, type
, cond
);
4640 fprintf_unfiltered (gdb_stdlog
,
4641 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4642 core_addr_to_string (addr
), len
, type
,
4643 host_address_to_string (cond
), (unsigned long) retval
);
4648 debug_to_remove_watchpoint (struct target_ops
*self
,
4649 CORE_ADDR addr
, int len
, int type
,
4650 struct expression
*cond
)
4654 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4655 addr
, len
, type
, cond
);
4657 fprintf_unfiltered (gdb_stdlog
,
4658 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4659 core_addr_to_string (addr
), len
, type
,
4660 host_address_to_string (cond
), (unsigned long) retval
);
4665 debug_to_terminal_init (struct target_ops
*self
)
4667 debug_target
.to_terminal_init (&debug_target
);
4669 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4673 debug_to_terminal_inferior (struct target_ops
*self
)
4675 debug_target
.to_terminal_inferior (&debug_target
);
4677 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4681 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4683 debug_target
.to_terminal_ours_for_output (&debug_target
);
4685 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4689 debug_to_terminal_ours (struct target_ops
*self
)
4691 debug_target
.to_terminal_ours (&debug_target
);
4693 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4697 debug_to_terminal_save_ours (struct target_ops
*self
)
4699 debug_target
.to_terminal_save_ours (&debug_target
);
4701 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4705 debug_to_terminal_info (struct target_ops
*self
,
4706 const char *arg
, int from_tty
)
4708 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4710 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4715 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4717 debug_target
.to_load (&debug_target
, args
, from_tty
);
4719 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4723 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4725 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4727 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4728 ptid_get_pid (ptid
));
4732 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4736 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4738 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4745 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4749 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4751 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4758 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4762 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4764 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4771 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4775 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4777 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4784 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4788 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4790 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4797 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4801 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4803 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4810 debug_to_has_exited (struct target_ops
*self
,
4811 int pid
, int wait_status
, int *exit_status
)
4815 has_exited
= debug_target
.to_has_exited (&debug_target
,
4816 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 (struct target_ops
*self
)
4829 retval
= debug_target
.to_can_run (&debug_target
);
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 (struct target_ops
*self
, ptid_t ptid
)
4854 debug_target
.to_stop (&debug_target
, ptid
);
4856 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4857 target_pid_to_str (ptid
));
4861 debug_to_rcmd (struct target_ops
*self
, char *command
,
4862 struct ui_file
*outbuf
)
4864 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4865 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4869 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4873 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, 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 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4938 error (_("\"monitor\" command not supported by this target."));
4942 do_monitor_command (char *cmd
,
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
);