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 ptid_t
default_get_ada_task_ptid (struct target_ops
*self
,
63 static void tcomplain (void) ATTRIBUTE_NORETURN
;
65 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
67 static int return_zero (void);
69 static int return_minus_one (void);
71 static void *return_null (void);
73 void target_ignore (void);
75 static void target_command (char *, int);
77 static struct target_ops
*find_default_run_target (char *);
79 static target_xfer_partial_ftype default_xfer_partial
;
81 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
84 static int dummy_find_memory_regions (struct target_ops
*self
,
85 find_memory_region_ftype ignore1
,
88 static char *dummy_make_corefile_notes (struct target_ops
*self
,
89 bfd
*ignore1
, int *ignore2
);
91 static int find_default_can_async_p (struct target_ops
*ignore
);
93 static int find_default_is_async_p (struct target_ops
*ignore
);
95 static enum exec_direction_kind default_execution_direction
96 (struct target_ops
*self
);
98 #include "target-delegates.c"
100 static void init_dummy_target (void);
102 static struct target_ops debug_target
;
104 static void debug_to_open (char *, int);
106 static void debug_to_prepare_to_store (struct target_ops
*self
,
109 static void debug_to_files_info (struct target_ops
*);
111 static int debug_to_insert_breakpoint (struct target_ops
*, struct gdbarch
*,
112 struct bp_target_info
*);
114 static int debug_to_remove_breakpoint (struct target_ops
*, struct gdbarch
*,
115 struct bp_target_info
*);
117 static int debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
120 static int debug_to_insert_hw_breakpoint (struct target_ops
*self
,
122 struct bp_target_info
*);
124 static int debug_to_remove_hw_breakpoint (struct target_ops
*self
,
126 struct bp_target_info
*);
128 static int debug_to_insert_watchpoint (struct target_ops
*self
,
130 struct expression
*);
132 static int debug_to_remove_watchpoint (struct target_ops
*self
,
134 struct expression
*);
136 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
138 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
139 CORE_ADDR
, CORE_ADDR
, int);
141 static int debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
144 static int debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
146 struct expression
*);
148 static void debug_to_terminal_init (struct target_ops
*self
);
150 static void debug_to_terminal_inferior (struct target_ops
*self
);
152 static void debug_to_terminal_ours_for_output (struct target_ops
*self
);
154 static void debug_to_terminal_save_ours (struct target_ops
*self
);
156 static void debug_to_terminal_ours (struct target_ops
*self
);
158 static void debug_to_load (struct target_ops
*self
, char *, int);
160 static int debug_to_can_run (struct target_ops
*self
);
162 static void debug_to_stop (struct target_ops
*self
, ptid_t
);
164 /* Pointer to array of target architecture structures; the size of the
165 array; the current index into the array; the allocated size of the
167 struct target_ops
**target_structs
;
168 unsigned target_struct_size
;
169 unsigned target_struct_allocsize
;
170 #define DEFAULT_ALLOCSIZE 10
172 /* The initial current target, so that there is always a semi-valid
175 static struct target_ops dummy_target
;
177 /* Top of target stack. */
179 static struct target_ops
*target_stack
;
181 /* The target structure we are currently using to talk to a process
182 or file or whatever "inferior" we have. */
184 struct target_ops current_target
;
186 /* Command list for target. */
188 static struct cmd_list_element
*targetlist
= NULL
;
190 /* Nonzero if we should trust readonly sections from the
191 executable when reading memory. */
193 static int trust_readonly
= 0;
195 /* Nonzero if we should show true memory content including
196 memory breakpoint inserted by gdb. */
198 static int show_memory_breakpoints
= 0;
200 /* These globals control whether GDB attempts to perform these
201 operations; they are useful for targets that need to prevent
202 inadvertant disruption, such as in non-stop mode. */
204 int may_write_registers
= 1;
206 int may_write_memory
= 1;
208 int may_insert_breakpoints
= 1;
210 int may_insert_tracepoints
= 1;
212 int may_insert_fast_tracepoints
= 1;
216 /* Non-zero if we want to see trace of target level stuff. */
218 static unsigned int targetdebug
= 0;
220 show_targetdebug (struct ui_file
*file
, int from_tty
,
221 struct cmd_list_element
*c
, const char *value
)
223 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
226 static void setup_target_debug (void);
228 /* The user just typed 'target' without the name of a target. */
231 target_command (char *arg
, int from_tty
)
233 fputs_filtered ("Argument required (target name). Try `help target'\n",
237 /* Default target_has_* methods for process_stratum targets. */
240 default_child_has_all_memory (struct target_ops
*ops
)
242 /* If no inferior selected, then we can't read memory here. */
243 if (ptid_equal (inferior_ptid
, null_ptid
))
250 default_child_has_memory (struct target_ops
*ops
)
252 /* If no inferior selected, then we can't read memory here. */
253 if (ptid_equal (inferior_ptid
, null_ptid
))
260 default_child_has_stack (struct target_ops
*ops
)
262 /* If no inferior selected, there's no stack. */
263 if (ptid_equal (inferior_ptid
, null_ptid
))
270 default_child_has_registers (struct target_ops
*ops
)
272 /* Can't read registers from no inferior. */
273 if (ptid_equal (inferior_ptid
, null_ptid
))
280 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
282 /* If there's no thread selected, then we can't make it run through
284 if (ptid_equal (the_ptid
, null_ptid
))
292 target_has_all_memory_1 (void)
294 struct target_ops
*t
;
296 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
297 if (t
->to_has_all_memory (t
))
304 target_has_memory_1 (void)
306 struct target_ops
*t
;
308 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
309 if (t
->to_has_memory (t
))
316 target_has_stack_1 (void)
318 struct target_ops
*t
;
320 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
321 if (t
->to_has_stack (t
))
328 target_has_registers_1 (void)
330 struct target_ops
*t
;
332 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
333 if (t
->to_has_registers (t
))
340 target_has_execution_1 (ptid_t the_ptid
)
342 struct target_ops
*t
;
344 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
345 if (t
->to_has_execution (t
, the_ptid
))
352 target_has_execution_current (void)
354 return target_has_execution_1 (inferior_ptid
);
357 /* Complete initialization of T. This ensures that various fields in
358 T are set, if needed by the target implementation. */
361 complete_target_initialization (struct target_ops
*t
)
363 /* Provide default values for all "must have" methods. */
364 if (t
->to_xfer_partial
== NULL
)
365 t
->to_xfer_partial
= default_xfer_partial
;
367 if (t
->to_has_all_memory
== NULL
)
368 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
370 if (t
->to_has_memory
== NULL
)
371 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
373 if (t
->to_has_stack
== NULL
)
374 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
376 if (t
->to_has_registers
== NULL
)
377 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
379 if (t
->to_has_execution
== NULL
)
380 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
382 install_delegators (t
);
385 /* Add possible target architecture T to the list and add a new
386 command 'target T->to_shortname'. Set COMPLETER as the command's
387 completer if not NULL. */
390 add_target_with_completer (struct target_ops
*t
,
391 completer_ftype
*completer
)
393 struct cmd_list_element
*c
;
395 complete_target_initialization (t
);
399 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
400 target_structs
= (struct target_ops
**) xmalloc
401 (target_struct_allocsize
* sizeof (*target_structs
));
403 if (target_struct_size
>= target_struct_allocsize
)
405 target_struct_allocsize
*= 2;
406 target_structs
= (struct target_ops
**)
407 xrealloc ((char *) target_structs
,
408 target_struct_allocsize
* sizeof (*target_structs
));
410 target_structs
[target_struct_size
++] = t
;
412 if (targetlist
== NULL
)
413 add_prefix_cmd ("target", class_run
, target_command
, _("\
414 Connect to a target machine or process.\n\
415 The first argument is the type or protocol of the target machine.\n\
416 Remaining arguments are interpreted by the target protocol. For more\n\
417 information on the arguments for a particular protocol, type\n\
418 `help target ' followed by the protocol name."),
419 &targetlist
, "target ", 0, &cmdlist
);
420 c
= add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
,
422 if (completer
!= NULL
)
423 set_cmd_completer (c
, completer
);
426 /* Add a possible target architecture to the list. */
429 add_target (struct target_ops
*t
)
431 add_target_with_completer (t
, NULL
);
437 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
439 struct cmd_list_element
*c
;
442 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
444 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
445 alt
= xstrprintf ("target %s", t
->to_shortname
);
446 deprecate_cmd (c
, alt
);
459 struct target_ops
*t
;
461 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
462 if (t
->to_kill
!= NULL
)
465 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
475 target_load (char *arg
, int from_tty
)
477 target_dcache_invalidate ();
478 (*current_target
.to_load
) (¤t_target
, arg
, from_tty
);
482 target_create_inferior (char *exec_file
, char *args
,
483 char **env
, int from_tty
)
485 struct target_ops
*t
;
487 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
489 if (t
->to_create_inferior
!= NULL
)
491 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
493 fprintf_unfiltered (gdb_stdlog
,
494 "target_create_inferior (%s, %s, xxx, %d)\n",
495 exec_file
, args
, from_tty
);
500 internal_error (__FILE__
, __LINE__
,
501 _("could not find a target to create inferior"));
505 target_terminal_inferior (void)
507 /* A background resume (``run&'') should leave GDB in control of the
508 terminal. Use target_can_async_p, not target_is_async_p, since at
509 this point the target is not async yet. However, if sync_execution
510 is not set, we know it will become async prior to resume. */
511 if (target_can_async_p () && !sync_execution
)
514 /* If GDB is resuming the inferior in the foreground, install
515 inferior's terminal modes. */
516 (*current_target
.to_terminal_inferior
) (¤t_target
);
520 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
521 struct target_ops
*t
)
523 errno
= EIO
; /* Can't read/write this location. */
524 return 0; /* No bytes handled. */
530 error (_("You can't do that when your target is `%s'"),
531 current_target
.to_shortname
);
537 error (_("You can't do that without a process to debug."));
541 default_terminal_info (struct target_ops
*self
, const char *args
, int from_tty
)
543 printf_unfiltered (_("No saved terminal information.\n"));
546 /* A default implementation for the to_get_ada_task_ptid target method.
548 This function builds the PTID by using both LWP and TID as part of
549 the PTID lwp and tid elements. The pid used is the pid of the
553 default_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long tid
)
555 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
558 static enum exec_direction_kind
559 default_execution_direction (struct target_ops
*self
)
561 if (!target_can_execute_reverse
)
563 else if (!target_can_async_p ())
566 gdb_assert_not_reached ("\
567 to_execution_direction must be implemented for reverse async");
570 /* Go through the target stack from top to bottom, copying over zero
571 entries in current_target, then filling in still empty entries. In
572 effect, we are doing class inheritance through the pushed target
575 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
576 is currently implemented, is that it discards any knowledge of
577 which target an inherited method originally belonged to.
578 Consequently, new new target methods should instead explicitly and
579 locally search the target stack for the target that can handle the
583 update_current_target (void)
585 struct target_ops
*t
;
587 /* First, reset current's contents. */
588 memset (¤t_target
, 0, sizeof (current_target
));
590 /* Install the delegators. */
591 install_delegators (¤t_target
);
593 #define INHERIT(FIELD, TARGET) \
594 if (!current_target.FIELD) \
595 current_target.FIELD = (TARGET)->FIELD
597 for (t
= target_stack
; t
; t
= t
->beneath
)
599 INHERIT (to_shortname
, t
);
600 INHERIT (to_longname
, t
);
602 /* Do not inherit to_open. */
603 /* Do not inherit to_close. */
604 /* Do not inherit to_attach. */
605 /* Do not inherit to_post_attach. */
606 INHERIT (to_attach_no_wait
, t
);
607 /* Do not inherit to_detach. */
608 /* Do not inherit to_disconnect. */
609 /* Do not inherit to_resume. */
610 /* Do not inherit to_wait. */
611 /* Do not inherit to_fetch_registers. */
612 /* Do not inherit to_store_registers. */
613 /* Do not inherit to_prepare_to_store. */
614 INHERIT (deprecated_xfer_memory
, t
);
615 /* Do not inherit to_files_info. */
616 /* Do not inherit to_insert_breakpoint. */
617 /* Do not inherit to_remove_breakpoint. */
618 /* Do not inherit to_can_use_hw_breakpoint. */
619 /* Do not inherit to_insert_hw_breakpoint. */
620 /* Do not inherit to_remove_hw_breakpoint. */
621 /* Do not inherit to_ranged_break_num_registers. */
622 /* Do not inherit to_insert_watchpoint. */
623 /* Do not inherit to_remove_watchpoint. */
624 /* Do not inherit to_insert_mask_watchpoint. */
625 /* Do not inherit to_remove_mask_watchpoint. */
626 /* Do not inherit to_stopped_data_address. */
627 INHERIT (to_have_steppable_watchpoint
, t
);
628 INHERIT (to_have_continuable_watchpoint
, t
);
629 /* Do not inherit to_stopped_by_watchpoint. */
630 /* Do not inherit to_watchpoint_addr_within_range. */
631 /* Do not inherit to_region_ok_for_hw_watchpoint. */
632 /* Do not inherit to_can_accel_watchpoint_condition. */
633 /* Do not inherit to_masked_watch_num_registers. */
634 /* Do not inherit to_terminal_init. */
635 /* Do not inherit to_terminal_inferior. */
636 /* Do not inherit to_terminal_ours_for_output. */
637 /* Do not inherit to_terminal_ours. */
638 /* Do not inherit to_terminal_save_ours. */
639 /* Do not inherit to_terminal_info. */
640 /* Do not inherit to_kill. */
641 /* Do not inherit to_load. */
642 /* Do no inherit to_create_inferior. */
643 /* Do not inherit to_post_startup_inferior. */
644 /* Do not inherit to_insert_fork_catchpoint. */
645 /* Do not inherit to_remove_fork_catchpoint. */
646 /* Do not inherit to_insert_vfork_catchpoint. */
647 /* Do not inherit to_remove_vfork_catchpoint. */
648 /* Do not inherit to_follow_fork. */
649 /* Do not inherit to_insert_exec_catchpoint. */
650 /* Do not inherit to_remove_exec_catchpoint. */
651 /* Do not inherit to_set_syscall_catchpoint. */
652 /* Do not inherit to_has_exited. */
653 /* Do not inherit to_mourn_inferior. */
654 INHERIT (to_can_run
, t
);
655 /* Do not inherit to_pass_signals. */
656 /* Do not inherit to_program_signals. */
657 /* Do not inherit to_thread_alive. */
658 /* Do not inherit to_find_new_threads. */
659 /* Do not inherit to_pid_to_str. */
660 /* Do not inherit to_extra_thread_info. */
661 /* Do not inherit to_thread_name. */
662 INHERIT (to_stop
, t
);
663 /* Do not inherit to_xfer_partial. */
664 /* Do not inherit to_rcmd. */
665 /* Do not inherit to_pid_to_exec_file. */
666 /* Do not inherit to_log_command. */
667 INHERIT (to_stratum
, t
);
668 /* Do not inherit to_has_all_memory. */
669 /* Do not inherit to_has_memory. */
670 /* Do not inherit to_has_stack. */
671 /* Do not inherit to_has_registers. */
672 /* Do not inherit to_has_execution. */
673 INHERIT (to_has_thread_control
, t
);
674 /* Do not inherit to_can_async_p. */
675 /* Do not inherit to_is_async_p. */
676 /* Do not inherit to_async. */
677 /* Do not inherit to_find_memory_regions. */
678 /* Do not inherit to_make_corefile_notes. */
679 /* Do not inherit to_get_bookmark. */
680 /* Do not inherit to_goto_bookmark. */
681 /* Do not inherit to_get_thread_local_address. */
682 /* Do not inherit to_can_execute_reverse. */
683 /* Do not inherit to_execution_direction. */
684 /* Do not inherit to_thread_architecture. */
685 /* Do not inherit to_read_description. */
686 /* Do not inherit to_get_ada_task_ptid. */
687 /* Do not inherit to_search_memory. */
688 /* Do not inherit to_supports_multi_process. */
689 /* Do not inherit to_supports_enable_disable_tracepoint. */
690 /* Do not inherit to_supports_string_tracing. */
691 /* Do not inherit to_trace_init. */
692 /* Do not inherit to_download_tracepoint. */
693 /* Do not inherit to_can_download_tracepoint. */
694 /* Do not inherit to_download_trace_state_variable. */
695 INHERIT (to_enable_tracepoint
, t
);
696 INHERIT (to_disable_tracepoint
, t
);
697 INHERIT (to_trace_set_readonly_regions
, t
);
698 INHERIT (to_trace_start
, t
);
699 INHERIT (to_get_trace_status
, t
);
700 INHERIT (to_get_tracepoint_status
, t
);
701 INHERIT (to_trace_stop
, t
);
702 INHERIT (to_trace_find
, t
);
703 INHERIT (to_get_trace_state_variable_value
, t
);
704 INHERIT (to_save_trace_data
, t
);
705 INHERIT (to_upload_tracepoints
, t
);
706 INHERIT (to_upload_trace_state_variables
, t
);
707 INHERIT (to_get_raw_trace_data
, t
);
708 INHERIT (to_get_min_fast_tracepoint_insn_len
, t
);
709 INHERIT (to_set_disconnected_tracing
, t
);
710 INHERIT (to_set_circular_trace_buffer
, t
);
711 INHERIT (to_set_trace_buffer_size
, t
);
712 INHERIT (to_set_trace_notes
, t
);
713 INHERIT (to_get_tib_address
, t
);
714 INHERIT (to_set_permissions
, t
);
715 INHERIT (to_static_tracepoint_marker_at
, t
);
716 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
717 INHERIT (to_traceframe_info
, t
);
718 INHERIT (to_use_agent
, t
);
719 INHERIT (to_can_use_agent
, t
);
720 INHERIT (to_augmented_libraries_svr4_read
, t
);
721 INHERIT (to_magic
, t
);
722 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
723 INHERIT (to_can_run_breakpoint_commands
, t
);
724 /* Do not inherit to_memory_map. */
725 /* Do not inherit to_flash_erase. */
726 /* Do not inherit to_flash_done. */
730 /* Clean up a target struct so it no longer has any zero pointers in
731 it. Some entries are defaulted to a method that print an error,
732 others are hard-wired to a standard recursive default. */
734 #define de_fault(field, value) \
735 if (!current_target.field) \
736 current_target.field = value
739 (void (*) (char *, int))
742 (void (*) (struct target_ops
*))
744 de_fault (deprecated_xfer_memory
,
745 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
746 struct mem_attrib
*, struct target_ops
*))
748 de_fault (to_can_run
,
749 (int (*) (struct target_ops
*))
752 (void (*) (struct target_ops
*, ptid_t
))
754 current_target
.to_read_description
= NULL
;
755 de_fault (to_enable_tracepoint
,
756 (void (*) (struct target_ops
*, struct bp_location
*))
758 de_fault (to_disable_tracepoint
,
759 (void (*) (struct target_ops
*, struct bp_location
*))
761 de_fault (to_trace_set_readonly_regions
,
762 (void (*) (struct target_ops
*))
764 de_fault (to_trace_start
,
765 (void (*) (struct target_ops
*))
767 de_fault (to_get_trace_status
,
768 (int (*) (struct target_ops
*, struct trace_status
*))
770 de_fault (to_get_tracepoint_status
,
771 (void (*) (struct target_ops
*, struct breakpoint
*,
772 struct uploaded_tp
*))
774 de_fault (to_trace_stop
,
775 (void (*) (struct target_ops
*))
777 de_fault (to_trace_find
,
778 (int (*) (struct target_ops
*,
779 enum trace_find_type
, int, CORE_ADDR
, CORE_ADDR
, int *))
781 de_fault (to_get_trace_state_variable_value
,
782 (int (*) (struct target_ops
*, int, LONGEST
*))
784 de_fault (to_save_trace_data
,
785 (int (*) (struct target_ops
*, const char *))
787 de_fault (to_upload_tracepoints
,
788 (int (*) (struct target_ops
*, struct uploaded_tp
**))
790 de_fault (to_upload_trace_state_variables
,
791 (int (*) (struct target_ops
*, struct uploaded_tsv
**))
793 de_fault (to_get_raw_trace_data
,
794 (LONGEST (*) (struct target_ops
*, gdb_byte
*, ULONGEST
, LONGEST
))
796 de_fault (to_get_min_fast_tracepoint_insn_len
,
797 (int (*) (struct target_ops
*))
799 de_fault (to_set_disconnected_tracing
,
800 (void (*) (struct target_ops
*, int))
802 de_fault (to_set_circular_trace_buffer
,
803 (void (*) (struct target_ops
*, int))
805 de_fault (to_set_trace_buffer_size
,
806 (void (*) (struct target_ops
*, LONGEST
))
808 de_fault (to_set_trace_notes
,
809 (int (*) (struct target_ops
*,
810 const char *, const char *, const char *))
812 de_fault (to_get_tib_address
,
813 (int (*) (struct target_ops
*, ptid_t
, CORE_ADDR
*))
815 de_fault (to_set_permissions
,
816 (void (*) (struct target_ops
*))
818 de_fault (to_static_tracepoint_marker_at
,
819 (int (*) (struct target_ops
*,
820 CORE_ADDR
, struct static_tracepoint_marker
*))
822 de_fault (to_static_tracepoint_markers_by_strid
,
823 (VEC(static_tracepoint_marker_p
) * (*) (struct target_ops
*,
826 de_fault (to_traceframe_info
,
827 (struct traceframe_info
* (*) (struct target_ops
*))
829 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
830 (int (*) (struct target_ops
*))
832 de_fault (to_can_run_breakpoint_commands
,
833 (int (*) (struct target_ops
*))
835 de_fault (to_use_agent
,
836 (int (*) (struct target_ops
*, int))
838 de_fault (to_can_use_agent
,
839 (int (*) (struct target_ops
*))
841 de_fault (to_augmented_libraries_svr4_read
,
842 (int (*) (struct target_ops
*))
847 /* Finally, position the target-stack beneath the squashed
848 "current_target". That way code looking for a non-inherited
849 target method can quickly and simply find it. */
850 current_target
.beneath
= target_stack
;
853 setup_target_debug ();
856 /* Push a new target type into the stack of the existing target accessors,
857 possibly superseding some of the existing accessors.
859 Rather than allow an empty stack, we always have the dummy target at
860 the bottom stratum, so we can call the function vectors without
864 push_target (struct target_ops
*t
)
866 struct target_ops
**cur
;
868 /* Check magic number. If wrong, it probably means someone changed
869 the struct definition, but not all the places that initialize one. */
870 if (t
->to_magic
!= OPS_MAGIC
)
872 fprintf_unfiltered (gdb_stderr
,
873 "Magic number of %s target struct wrong\n",
875 internal_error (__FILE__
, __LINE__
,
876 _("failed internal consistency check"));
879 /* Find the proper stratum to install this target in. */
880 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
882 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
886 /* If there's already targets at this stratum, remove them. */
887 /* FIXME: cagney/2003-10-15: I think this should be popping all
888 targets to CUR, and not just those at this stratum level. */
889 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
891 /* There's already something at this stratum level. Close it,
892 and un-hook it from the stack. */
893 struct target_ops
*tmp
= (*cur
);
895 (*cur
) = (*cur
)->beneath
;
900 /* We have removed all targets in our stratum, now add the new one. */
904 update_current_target ();
907 /* Remove a target_ops vector from the stack, wherever it may be.
908 Return how many times it was removed (0 or 1). */
911 unpush_target (struct target_ops
*t
)
913 struct target_ops
**cur
;
914 struct target_ops
*tmp
;
916 if (t
->to_stratum
== dummy_stratum
)
917 internal_error (__FILE__
, __LINE__
,
918 _("Attempt to unpush the dummy target"));
920 /* Look for the specified target. Note that we assume that a target
921 can only occur once in the target stack. */
923 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
929 /* If we don't find target_ops, quit. Only open targets should be
934 /* Unchain the target. */
936 (*cur
) = (*cur
)->beneath
;
939 update_current_target ();
941 /* Finally close the target. Note we do this after unchaining, so
942 any target method calls from within the target_close
943 implementation don't end up in T anymore. */
950 pop_all_targets_above (enum strata above_stratum
)
952 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
954 if (!unpush_target (target_stack
))
956 fprintf_unfiltered (gdb_stderr
,
957 "pop_all_targets couldn't find target %s\n",
958 target_stack
->to_shortname
);
959 internal_error (__FILE__
, __LINE__
,
960 _("failed internal consistency check"));
967 pop_all_targets (void)
969 pop_all_targets_above (dummy_stratum
);
972 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
975 target_is_pushed (struct target_ops
*t
)
977 struct target_ops
**cur
;
979 /* Check magic number. If wrong, it probably means someone changed
980 the struct definition, but not all the places that initialize one. */
981 if (t
->to_magic
!= OPS_MAGIC
)
983 fprintf_unfiltered (gdb_stderr
,
984 "Magic number of %s target struct wrong\n",
986 internal_error (__FILE__
, __LINE__
,
987 _("failed internal consistency check"));
990 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
997 /* Using the objfile specified in OBJFILE, find the address for the
998 current thread's thread-local storage with offset OFFSET. */
1000 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1002 volatile CORE_ADDR addr
= 0;
1003 struct target_ops
*target
;
1005 for (target
= current_target
.beneath
;
1007 target
= target
->beneath
)
1009 if (target
->to_get_thread_local_address
!= NULL
)
1014 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
1016 ptid_t ptid
= inferior_ptid
;
1017 volatile struct gdb_exception ex
;
1019 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1023 /* Fetch the load module address for this objfile. */
1024 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1026 /* If it's 0, throw the appropriate exception. */
1028 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1029 _("TLS load module not found"));
1031 addr
= target
->to_get_thread_local_address (target
, ptid
,
1034 /* If an error occurred, print TLS related messages here. Otherwise,
1035 throw the error to some higher catcher. */
1038 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1042 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1043 error (_("Cannot find thread-local variables "
1044 "in this thread library."));
1046 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1047 if (objfile_is_library
)
1048 error (_("Cannot find shared library `%s' in dynamic"
1049 " linker's load module list"), objfile_name (objfile
));
1051 error (_("Cannot find executable file `%s' in dynamic"
1052 " linker's load module list"), objfile_name (objfile
));
1054 case TLS_NOT_ALLOCATED_YET_ERROR
:
1055 if (objfile_is_library
)
1056 error (_("The inferior has not yet allocated storage for"
1057 " thread-local variables in\n"
1058 "the shared library `%s'\n"
1060 objfile_name (objfile
), target_pid_to_str (ptid
));
1062 error (_("The inferior has not yet allocated storage for"
1063 " thread-local variables in\n"
1064 "the executable `%s'\n"
1066 objfile_name (objfile
), target_pid_to_str (ptid
));
1068 case TLS_GENERIC_ERROR
:
1069 if (objfile_is_library
)
1070 error (_("Cannot find thread-local storage for %s, "
1071 "shared library %s:\n%s"),
1072 target_pid_to_str (ptid
),
1073 objfile_name (objfile
), ex
.message
);
1075 error (_("Cannot find thread-local storage for %s, "
1076 "executable file %s:\n%s"),
1077 target_pid_to_str (ptid
),
1078 objfile_name (objfile
), ex
.message
);
1081 throw_exception (ex
);
1086 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1087 TLS is an ABI-specific thing. But we don't do that yet. */
1089 error (_("Cannot find thread-local variables on this target"));
1095 target_xfer_status_to_string (enum target_xfer_status err
)
1097 #define CASE(X) case X: return #X
1100 CASE(TARGET_XFER_E_IO
);
1101 CASE(TARGET_XFER_E_UNAVAILABLE
);
1110 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1112 /* target_read_string -- read a null terminated string, up to LEN bytes,
1113 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1114 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1115 is responsible for freeing it. Return the number of bytes successfully
1119 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1121 int tlen
, offset
, i
;
1125 int buffer_allocated
;
1127 unsigned int nbytes_read
= 0;
1129 gdb_assert (string
);
1131 /* Small for testing. */
1132 buffer_allocated
= 4;
1133 buffer
= xmalloc (buffer_allocated
);
1138 tlen
= MIN (len
, 4 - (memaddr
& 3));
1139 offset
= memaddr
& 3;
1141 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1144 /* The transfer request might have crossed the boundary to an
1145 unallocated region of memory. Retry the transfer, requesting
1149 errcode
= target_read_memory (memaddr
, buf
, 1);
1154 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1158 bytes
= bufptr
- buffer
;
1159 buffer_allocated
*= 2;
1160 buffer
= xrealloc (buffer
, buffer_allocated
);
1161 bufptr
= buffer
+ bytes
;
1164 for (i
= 0; i
< tlen
; i
++)
1166 *bufptr
++ = buf
[i
+ offset
];
1167 if (buf
[i
+ offset
] == '\000')
1169 nbytes_read
+= i
+ 1;
1176 nbytes_read
+= tlen
;
1185 struct target_section_table
*
1186 target_get_section_table (struct target_ops
*target
)
1188 struct target_ops
*t
;
1191 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1193 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1194 if (t
->to_get_section_table
!= NULL
)
1195 return (*t
->to_get_section_table
) (t
);
1200 /* Find a section containing ADDR. */
1202 struct target_section
*
1203 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1205 struct target_section_table
*table
= target_get_section_table (target
);
1206 struct target_section
*secp
;
1211 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1213 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1219 /* Read memory from the live target, even if currently inspecting a
1220 traceframe. The return is the same as that of target_read. */
1222 static enum target_xfer_status
1223 target_read_live_memory (enum target_object object
,
1224 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1225 ULONGEST
*xfered_len
)
1227 enum target_xfer_status ret
;
1228 struct cleanup
*cleanup
;
1230 /* Switch momentarily out of tfind mode so to access live memory.
1231 Note that this must not clear global state, such as the frame
1232 cache, which must still remain valid for the previous traceframe.
1233 We may be _building_ the frame cache at this point. */
1234 cleanup
= make_cleanup_restore_traceframe_number ();
1235 set_traceframe_number (-1);
1237 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1238 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1240 do_cleanups (cleanup
);
1244 /* Using the set of read-only target sections of OPS, read live
1245 read-only memory. Note that the actual reads start from the
1246 top-most target again.
1248 For interface/parameters/return description see target.h,
1251 static enum target_xfer_status
1252 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1253 enum target_object object
,
1254 gdb_byte
*readbuf
, ULONGEST memaddr
,
1255 ULONGEST len
, ULONGEST
*xfered_len
)
1257 struct target_section
*secp
;
1258 struct target_section_table
*table
;
1260 secp
= target_section_by_addr (ops
, memaddr
);
1262 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1263 secp
->the_bfd_section
)
1266 struct target_section
*p
;
1267 ULONGEST memend
= memaddr
+ len
;
1269 table
= target_get_section_table (ops
);
1271 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1273 if (memaddr
>= p
->addr
)
1275 if (memend
<= p
->endaddr
)
1277 /* Entire transfer is within this section. */
1278 return target_read_live_memory (object
, memaddr
,
1279 readbuf
, len
, xfered_len
);
1281 else if (memaddr
>= p
->endaddr
)
1283 /* This section ends before the transfer starts. */
1288 /* This section overlaps the transfer. Just do half. */
1289 len
= p
->endaddr
- memaddr
;
1290 return target_read_live_memory (object
, memaddr
,
1291 readbuf
, len
, xfered_len
);
1297 return TARGET_XFER_EOF
;
1300 /* Read memory from more than one valid target. A core file, for
1301 instance, could have some of memory but delegate other bits to
1302 the target below it. So, we must manually try all targets. */
1304 static enum target_xfer_status
1305 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1306 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1307 ULONGEST
*xfered_len
)
1309 enum target_xfer_status res
;
1313 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1314 readbuf
, writebuf
, memaddr
, len
,
1316 if (res
== TARGET_XFER_OK
)
1319 /* Stop if the target reports that the memory is not available. */
1320 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1323 /* We want to continue past core files to executables, but not
1324 past a running target's memory. */
1325 if (ops
->to_has_all_memory (ops
))
1330 while (ops
!= NULL
);
1335 /* Perform a partial memory transfer.
1336 For docs see target.h, to_xfer_partial. */
1338 static enum target_xfer_status
1339 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1340 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1341 ULONGEST len
, ULONGEST
*xfered_len
)
1343 enum target_xfer_status res
;
1345 struct mem_region
*region
;
1346 struct inferior
*inf
;
1348 /* For accesses to unmapped overlay sections, read directly from
1349 files. Must do this first, as MEMADDR may need adjustment. */
1350 if (readbuf
!= NULL
&& overlay_debugging
)
1352 struct obj_section
*section
= find_pc_overlay (memaddr
);
1354 if (pc_in_unmapped_range (memaddr
, section
))
1356 struct target_section_table
*table
1357 = target_get_section_table (ops
);
1358 const char *section_name
= section
->the_bfd_section
->name
;
1360 memaddr
= overlay_mapped_address (memaddr
, section
);
1361 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1362 memaddr
, len
, xfered_len
,
1364 table
->sections_end
,
1369 /* Try the executable files, if "trust-readonly-sections" is set. */
1370 if (readbuf
!= NULL
&& trust_readonly
)
1372 struct target_section
*secp
;
1373 struct target_section_table
*table
;
1375 secp
= target_section_by_addr (ops
, memaddr
);
1377 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1378 secp
->the_bfd_section
)
1381 table
= target_get_section_table (ops
);
1382 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1383 memaddr
, len
, xfered_len
,
1385 table
->sections_end
,
1390 /* If reading unavailable memory in the context of traceframes, and
1391 this address falls within a read-only section, fallback to
1392 reading from live memory. */
1393 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1395 VEC(mem_range_s
) *available
;
1397 /* If we fail to get the set of available memory, then the
1398 target does not support querying traceframe info, and so we
1399 attempt reading from the traceframe anyway (assuming the
1400 target implements the old QTro packet then). */
1401 if (traceframe_available_memory (&available
, memaddr
, len
))
1403 struct cleanup
*old_chain
;
1405 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1407 if (VEC_empty (mem_range_s
, available
)
1408 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1410 /* Don't read into the traceframe's available
1412 if (!VEC_empty (mem_range_s
, available
))
1414 LONGEST oldlen
= len
;
1416 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1417 gdb_assert (len
<= oldlen
);
1420 do_cleanups (old_chain
);
1422 /* This goes through the topmost target again. */
1423 res
= memory_xfer_live_readonly_partial (ops
, object
,
1426 if (res
== TARGET_XFER_OK
)
1427 return TARGET_XFER_OK
;
1430 /* No use trying further, we know some memory starting
1431 at MEMADDR isn't available. */
1433 return TARGET_XFER_E_UNAVAILABLE
;
1437 /* Don't try to read more than how much is available, in
1438 case the target implements the deprecated QTro packet to
1439 cater for older GDBs (the target's knowledge of read-only
1440 sections may be outdated by now). */
1441 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1443 do_cleanups (old_chain
);
1447 /* Try GDB's internal data cache. */
1448 region
= lookup_mem_region (memaddr
);
1449 /* region->hi == 0 means there's no upper bound. */
1450 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1453 reg_len
= region
->hi
- memaddr
;
1455 switch (region
->attrib
.mode
)
1458 if (writebuf
!= NULL
)
1459 return TARGET_XFER_E_IO
;
1463 if (readbuf
!= NULL
)
1464 return TARGET_XFER_E_IO
;
1468 /* We only support writing to flash during "load" for now. */
1469 if (writebuf
!= NULL
)
1470 error (_("Writing to flash memory forbidden in this context"));
1474 return TARGET_XFER_E_IO
;
1477 if (!ptid_equal (inferior_ptid
, null_ptid
))
1478 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1483 /* The dcache reads whole cache lines; that doesn't play well
1484 with reading from a trace buffer, because reading outside of
1485 the collected memory range fails. */
1486 && get_traceframe_number () == -1
1487 && (region
->attrib
.cache
1488 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1489 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1491 DCACHE
*dcache
= target_dcache_get_or_init ();
1494 if (readbuf
!= NULL
)
1495 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1497 /* FIXME drow/2006-08-09: If we're going to preserve const
1498 correctness dcache_xfer_memory should take readbuf and
1500 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1503 return TARGET_XFER_E_IO
;
1506 *xfered_len
= (ULONGEST
) l
;
1507 return TARGET_XFER_OK
;
1511 /* If none of those methods found the memory we wanted, fall back
1512 to a target partial transfer. Normally a single call to
1513 to_xfer_partial is enough; if it doesn't recognize an object
1514 it will call the to_xfer_partial of the next target down.
1515 But for memory this won't do. Memory is the only target
1516 object which can be read from more than one valid target.
1517 A core file, for instance, could have some of memory but
1518 delegate other bits to the target below it. So, we must
1519 manually try all targets. */
1521 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1524 /* Make sure the cache gets updated no matter what - if we are writing
1525 to the stack. Even if this write is not tagged as such, we still need
1526 to update the cache. */
1528 if (res
== TARGET_XFER_OK
1531 && target_dcache_init_p ()
1532 && !region
->attrib
.cache
1533 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1534 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1536 DCACHE
*dcache
= target_dcache_get ();
1538 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1541 /* If we still haven't got anything, return the last error. We
1546 /* Perform a partial memory transfer. For docs see target.h,
1549 static enum target_xfer_status
1550 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1551 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1552 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1554 enum target_xfer_status res
;
1556 /* Zero length requests are ok and require no work. */
1558 return TARGET_XFER_EOF
;
1560 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1561 breakpoint insns, thus hiding out from higher layers whether
1562 there are software breakpoints inserted in the code stream. */
1563 if (readbuf
!= NULL
)
1565 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1568 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1569 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1574 struct cleanup
*old_chain
;
1576 /* A large write request is likely to be partially satisfied
1577 by memory_xfer_partial_1. We will continually malloc
1578 and free a copy of the entire write request for breakpoint
1579 shadow handling even though we only end up writing a small
1580 subset of it. Cap writes to 4KB to mitigate this. */
1581 len
= min (4096, len
);
1583 buf
= xmalloc (len
);
1584 old_chain
= make_cleanup (xfree
, buf
);
1585 memcpy (buf
, writebuf
, len
);
1587 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1588 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1591 do_cleanups (old_chain
);
1598 restore_show_memory_breakpoints (void *arg
)
1600 show_memory_breakpoints
= (uintptr_t) arg
;
1604 make_show_memory_breakpoints_cleanup (int show
)
1606 int current
= show_memory_breakpoints
;
1608 show_memory_breakpoints
= show
;
1609 return make_cleanup (restore_show_memory_breakpoints
,
1610 (void *) (uintptr_t) current
);
1613 /* For docs see target.h, to_xfer_partial. */
1615 enum target_xfer_status
1616 target_xfer_partial (struct target_ops
*ops
,
1617 enum target_object object
, const char *annex
,
1618 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1619 ULONGEST offset
, ULONGEST len
,
1620 ULONGEST
*xfered_len
)
1622 enum target_xfer_status retval
;
1624 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1626 /* Transfer is done when LEN is zero. */
1628 return TARGET_XFER_EOF
;
1630 if (writebuf
&& !may_write_memory
)
1631 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1632 core_addr_to_string_nz (offset
), plongest (len
));
1636 /* If this is a memory transfer, let the memory-specific code
1637 have a look at it instead. Memory transfers are more
1639 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1640 || object
== TARGET_OBJECT_CODE_MEMORY
)
1641 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1642 writebuf
, offset
, len
, xfered_len
);
1643 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1645 /* Request the normal memory object from other layers. */
1646 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1650 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1651 writebuf
, offset
, len
, xfered_len
);
1655 const unsigned char *myaddr
= NULL
;
1657 fprintf_unfiltered (gdb_stdlog
,
1658 "%s:target_xfer_partial "
1659 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1662 (annex
? annex
: "(null)"),
1663 host_address_to_string (readbuf
),
1664 host_address_to_string (writebuf
),
1665 core_addr_to_string_nz (offset
),
1666 pulongest (len
), retval
,
1667 pulongest (*xfered_len
));
1673 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1677 fputs_unfiltered (", bytes =", gdb_stdlog
);
1678 for (i
= 0; i
< *xfered_len
; i
++)
1680 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1682 if (targetdebug
< 2 && i
> 0)
1684 fprintf_unfiltered (gdb_stdlog
, " ...");
1687 fprintf_unfiltered (gdb_stdlog
, "\n");
1690 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1694 fputc_unfiltered ('\n', gdb_stdlog
);
1697 /* Check implementations of to_xfer_partial update *XFERED_LEN
1698 properly. Do assertion after printing debug messages, so that we
1699 can find more clues on assertion failure from debugging messages. */
1700 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1701 gdb_assert (*xfered_len
> 0);
1706 /* Read LEN bytes of target memory at address MEMADDR, placing the
1707 results in GDB's memory at MYADDR. Returns either 0 for success or
1708 TARGET_XFER_E_IO if any error occurs.
1710 If an error occurs, no guarantee is made about the contents of the data at
1711 MYADDR. In particular, the caller should not depend upon partial reads
1712 filling the buffer with good data. There is no way for the caller to know
1713 how much good data might have been transfered anyway. Callers that can
1714 deal with partial reads should call target_read (which will retry until
1715 it makes no progress, and then return how much was transferred). */
1718 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1720 /* Dispatch to the topmost target, not the flattened current_target.
1721 Memory accesses check target->to_has_(all_)memory, and the
1722 flattened target doesn't inherit those. */
1723 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1724 myaddr
, memaddr
, len
) == len
)
1727 return TARGET_XFER_E_IO
;
1730 /* Like target_read_memory, but specify explicitly that this is a read
1731 from the target's raw memory. That is, this read bypasses the
1732 dcache, breakpoint shadowing, etc. */
1735 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1737 /* See comment in target_read_memory about why the request starts at
1738 current_target.beneath. */
1739 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1740 myaddr
, memaddr
, len
) == len
)
1743 return TARGET_XFER_E_IO
;
1746 /* Like target_read_memory, but specify explicitly that this is a read from
1747 the target's stack. This may trigger different cache behavior. */
1750 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1752 /* See comment in target_read_memory about why the request starts at
1753 current_target.beneath. */
1754 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1755 myaddr
, memaddr
, len
) == len
)
1758 return TARGET_XFER_E_IO
;
1761 /* Like target_read_memory, but specify explicitly that this is a read from
1762 the target's code. This may trigger different cache behavior. */
1765 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1767 /* See comment in target_read_memory about why the request starts at
1768 current_target.beneath. */
1769 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1770 myaddr
, memaddr
, len
) == len
)
1773 return TARGET_XFER_E_IO
;
1776 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1777 Returns either 0 for success or TARGET_XFER_E_IO if any
1778 error occurs. If an error occurs, no guarantee is made about how
1779 much data got written. Callers that can deal with partial writes
1780 should call target_write. */
1783 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1785 /* See comment in target_read_memory about why the request starts at
1786 current_target.beneath. */
1787 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1788 myaddr
, memaddr
, len
) == len
)
1791 return TARGET_XFER_E_IO
;
1794 /* Write LEN bytes from MYADDR to target raw memory at address
1795 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1796 if any error occurs. If an error occurs, no guarantee is made
1797 about how much data got written. Callers that can deal with
1798 partial writes should call target_write. */
1801 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1803 /* See comment in target_read_memory about why the request starts at
1804 current_target.beneath. */
1805 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1806 myaddr
, memaddr
, len
) == len
)
1809 return TARGET_XFER_E_IO
;
1812 /* Fetch the target's memory map. */
1815 target_memory_map (void)
1817 VEC(mem_region_s
) *result
;
1818 struct mem_region
*last_one
, *this_one
;
1820 struct target_ops
*t
;
1823 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1825 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1826 if (t
->to_memory_map
!= NULL
)
1832 result
= t
->to_memory_map (t
);
1836 qsort (VEC_address (mem_region_s
, result
),
1837 VEC_length (mem_region_s
, result
),
1838 sizeof (struct mem_region
), mem_region_cmp
);
1840 /* Check that regions do not overlap. Simultaneously assign
1841 a numbering for the "mem" commands to use to refer to
1844 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1846 this_one
->number
= ix
;
1848 if (last_one
&& last_one
->hi
> this_one
->lo
)
1850 warning (_("Overlapping regions in memory map: ignoring"));
1851 VEC_free (mem_region_s
, result
);
1854 last_one
= this_one
;
1861 target_flash_erase (ULONGEST address
, LONGEST length
)
1863 struct target_ops
*t
;
1865 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1866 if (t
->to_flash_erase
!= NULL
)
1869 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1870 hex_string (address
), phex (length
, 0));
1871 t
->to_flash_erase (t
, address
, length
);
1879 target_flash_done (void)
1881 struct target_ops
*t
;
1883 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1884 if (t
->to_flash_done
!= NULL
)
1887 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1888 t
->to_flash_done (t
);
1896 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1897 struct cmd_list_element
*c
, const char *value
)
1899 fprintf_filtered (file
,
1900 _("Mode for reading from readonly sections is %s.\n"),
1904 /* More generic transfers. */
1906 static enum target_xfer_status
1907 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1908 const char *annex
, gdb_byte
*readbuf
,
1909 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1910 ULONGEST
*xfered_len
)
1912 if (object
== TARGET_OBJECT_MEMORY
1913 && ops
->deprecated_xfer_memory
!= NULL
)
1914 /* If available, fall back to the target's
1915 "deprecated_xfer_memory" method. */
1920 if (writebuf
!= NULL
)
1922 void *buffer
= xmalloc (len
);
1923 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1925 memcpy (buffer
, writebuf
, len
);
1926 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1927 1/*write*/, NULL
, ops
);
1928 do_cleanups (cleanup
);
1930 if (readbuf
!= NULL
)
1931 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1932 0/*read*/, NULL
, ops
);
1935 *xfered_len
= (ULONGEST
) xfered
;
1936 return TARGET_XFER_E_IO
;
1938 else if (xfered
== 0 && errno
== 0)
1939 /* "deprecated_xfer_memory" uses 0, cross checked against
1940 ERRNO as one indication of an error. */
1941 return TARGET_XFER_EOF
;
1943 return TARGET_XFER_E_IO
;
1947 gdb_assert (ops
->beneath
!= NULL
);
1948 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1949 readbuf
, writebuf
, offset
, len
,
1954 /* Target vector read/write partial wrapper functions. */
1956 static enum target_xfer_status
1957 target_read_partial (struct target_ops
*ops
,
1958 enum target_object object
,
1959 const char *annex
, gdb_byte
*buf
,
1960 ULONGEST offset
, ULONGEST len
,
1961 ULONGEST
*xfered_len
)
1963 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
1967 static enum target_xfer_status
1968 target_write_partial (struct target_ops
*ops
,
1969 enum target_object object
,
1970 const char *annex
, const gdb_byte
*buf
,
1971 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
1973 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
1977 /* Wrappers to perform the full transfer. */
1979 /* For docs on target_read see target.h. */
1982 target_read (struct target_ops
*ops
,
1983 enum target_object object
,
1984 const char *annex
, gdb_byte
*buf
,
1985 ULONGEST offset
, LONGEST len
)
1989 while (xfered
< len
)
1991 ULONGEST xfered_len
;
1992 enum target_xfer_status status
;
1994 status
= target_read_partial (ops
, object
, annex
,
1995 (gdb_byte
*) buf
+ xfered
,
1996 offset
+ xfered
, len
- xfered
,
1999 /* Call an observer, notifying them of the xfer progress? */
2000 if (status
== TARGET_XFER_EOF
)
2002 else if (status
== TARGET_XFER_OK
)
2004 xfered
+= xfered_len
;
2014 /* Assuming that the entire [begin, end) range of memory cannot be
2015 read, try to read whatever subrange is possible to read.
2017 The function returns, in RESULT, either zero or one memory block.
2018 If there's a readable subrange at the beginning, it is completely
2019 read and returned. Any further readable subrange will not be read.
2020 Otherwise, if there's a readable subrange at the end, it will be
2021 completely read and returned. Any readable subranges before it
2022 (obviously, not starting at the beginning), will be ignored. In
2023 other cases -- either no readable subrange, or readable subrange(s)
2024 that is neither at the beginning, or end, nothing is returned.
2026 The purpose of this function is to handle a read across a boundary
2027 of accessible memory in a case when memory map is not available.
2028 The above restrictions are fine for this case, but will give
2029 incorrect results if the memory is 'patchy'. However, supporting
2030 'patchy' memory would require trying to read every single byte,
2031 and it seems unacceptable solution. Explicit memory map is
2032 recommended for this case -- and target_read_memory_robust will
2033 take care of reading multiple ranges then. */
2036 read_whatever_is_readable (struct target_ops
*ops
,
2037 ULONGEST begin
, ULONGEST end
,
2038 VEC(memory_read_result_s
) **result
)
2040 gdb_byte
*buf
= xmalloc (end
- begin
);
2041 ULONGEST current_begin
= begin
;
2042 ULONGEST current_end
= end
;
2044 memory_read_result_s r
;
2045 ULONGEST xfered_len
;
2047 /* If we previously failed to read 1 byte, nothing can be done here. */
2048 if (end
- begin
<= 1)
2054 /* Check that either first or the last byte is readable, and give up
2055 if not. This heuristic is meant to permit reading accessible memory
2056 at the boundary of accessible region. */
2057 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2058 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
2063 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2064 buf
+ (end
-begin
) - 1, end
- 1, 1,
2065 &xfered_len
) == TARGET_XFER_OK
)
2076 /* Loop invariant is that the [current_begin, current_end) was previously
2077 found to be not readable as a whole.
2079 Note loop condition -- if the range has 1 byte, we can't divide the range
2080 so there's no point trying further. */
2081 while (current_end
- current_begin
> 1)
2083 ULONGEST first_half_begin
, first_half_end
;
2084 ULONGEST second_half_begin
, second_half_end
;
2086 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2090 first_half_begin
= current_begin
;
2091 first_half_end
= middle
;
2092 second_half_begin
= middle
;
2093 second_half_end
= current_end
;
2097 first_half_begin
= middle
;
2098 first_half_end
= current_end
;
2099 second_half_begin
= current_begin
;
2100 second_half_end
= middle
;
2103 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2104 buf
+ (first_half_begin
- begin
),
2106 first_half_end
- first_half_begin
);
2108 if (xfer
== first_half_end
- first_half_begin
)
2110 /* This half reads up fine. So, the error must be in the
2112 current_begin
= second_half_begin
;
2113 current_end
= second_half_end
;
2117 /* This half is not readable. Because we've tried one byte, we
2118 know some part of this half if actually redable. Go to the next
2119 iteration to divide again and try to read.
2121 We don't handle the other half, because this function only tries
2122 to read a single readable subrange. */
2123 current_begin
= first_half_begin
;
2124 current_end
= first_half_end
;
2130 /* The [begin, current_begin) range has been read. */
2132 r
.end
= current_begin
;
2137 /* The [current_end, end) range has been read. */
2138 LONGEST rlen
= end
- current_end
;
2140 r
.data
= xmalloc (rlen
);
2141 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2142 r
.begin
= current_end
;
2146 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2150 free_memory_read_result_vector (void *x
)
2152 VEC(memory_read_result_s
) *v
= x
;
2153 memory_read_result_s
*current
;
2156 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2158 xfree (current
->data
);
2160 VEC_free (memory_read_result_s
, v
);
2163 VEC(memory_read_result_s
) *
2164 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2166 VEC(memory_read_result_s
) *result
= 0;
2169 while (xfered
< len
)
2171 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2174 /* If there is no explicit region, a fake one should be created. */
2175 gdb_assert (region
);
2177 if (region
->hi
== 0)
2178 rlen
= len
- xfered
;
2180 rlen
= region
->hi
- offset
;
2182 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2184 /* Cannot read this region. Note that we can end up here only
2185 if the region is explicitly marked inaccessible, or
2186 'inaccessible-by-default' is in effect. */
2191 LONGEST to_read
= min (len
- xfered
, rlen
);
2192 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2194 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2195 (gdb_byte
*) buffer
,
2196 offset
+ xfered
, to_read
);
2197 /* Call an observer, notifying them of the xfer progress? */
2200 /* Got an error reading full chunk. See if maybe we can read
2203 read_whatever_is_readable (ops
, offset
+ xfered
,
2204 offset
+ xfered
+ to_read
, &result
);
2209 struct memory_read_result r
;
2211 r
.begin
= offset
+ xfered
;
2212 r
.end
= r
.begin
+ xfer
;
2213 VEC_safe_push (memory_read_result_s
, result
, &r
);
2223 /* An alternative to target_write with progress callbacks. */
2226 target_write_with_progress (struct target_ops
*ops
,
2227 enum target_object object
,
2228 const char *annex
, const gdb_byte
*buf
,
2229 ULONGEST offset
, LONGEST len
,
2230 void (*progress
) (ULONGEST
, void *), void *baton
)
2234 /* Give the progress callback a chance to set up. */
2236 (*progress
) (0, baton
);
2238 while (xfered
< len
)
2240 ULONGEST xfered_len
;
2241 enum target_xfer_status status
;
2243 status
= target_write_partial (ops
, object
, annex
,
2244 (gdb_byte
*) buf
+ xfered
,
2245 offset
+ xfered
, len
- xfered
,
2248 if (status
== TARGET_XFER_EOF
)
2250 if (TARGET_XFER_STATUS_ERROR_P (status
))
2253 gdb_assert (status
== TARGET_XFER_OK
);
2255 (*progress
) (xfered_len
, baton
);
2257 xfered
+= xfered_len
;
2263 /* For docs on target_write see target.h. */
2266 target_write (struct target_ops
*ops
,
2267 enum target_object object
,
2268 const char *annex
, const gdb_byte
*buf
,
2269 ULONGEST offset
, LONGEST len
)
2271 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2275 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2276 the size of the transferred data. PADDING additional bytes are
2277 available in *BUF_P. This is a helper function for
2278 target_read_alloc; see the declaration of that function for more
2282 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2283 const char *annex
, gdb_byte
**buf_p
, int padding
)
2285 size_t buf_alloc
, buf_pos
;
2288 /* This function does not have a length parameter; it reads the
2289 entire OBJECT). Also, it doesn't support objects fetched partly
2290 from one target and partly from another (in a different stratum,
2291 e.g. a core file and an executable). Both reasons make it
2292 unsuitable for reading memory. */
2293 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2295 /* Start by reading up to 4K at a time. The target will throttle
2296 this number down if necessary. */
2298 buf
= xmalloc (buf_alloc
);
2302 ULONGEST xfered_len
;
2303 enum target_xfer_status status
;
2305 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2306 buf_pos
, buf_alloc
- buf_pos
- padding
,
2309 if (status
== TARGET_XFER_EOF
)
2311 /* Read all there was. */
2318 else if (status
!= TARGET_XFER_OK
)
2320 /* An error occurred. */
2322 return TARGET_XFER_E_IO
;
2325 buf_pos
+= xfered_len
;
2327 /* If the buffer is filling up, expand it. */
2328 if (buf_alloc
< buf_pos
* 2)
2331 buf
= xrealloc (buf
, buf_alloc
);
2338 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2339 the size of the transferred data. See the declaration in "target.h"
2340 function for more information about the return value. */
2343 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2344 const char *annex
, gdb_byte
**buf_p
)
2346 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2349 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2350 returned as a string, allocated using xmalloc. If an error occurs
2351 or the transfer is unsupported, NULL is returned. Empty objects
2352 are returned as allocated but empty strings. A warning is issued
2353 if the result contains any embedded NUL bytes. */
2356 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2361 LONGEST i
, transferred
;
2363 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2364 bufstr
= (char *) buffer
;
2366 if (transferred
< 0)
2369 if (transferred
== 0)
2370 return xstrdup ("");
2372 bufstr
[transferred
] = 0;
2374 /* Check for embedded NUL bytes; but allow trailing NULs. */
2375 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2378 warning (_("target object %d, annex %s, "
2379 "contained unexpected null characters"),
2380 (int) object
, annex
? annex
: "(none)");
2387 /* Memory transfer methods. */
2390 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2393 /* This method is used to read from an alternate, non-current
2394 target. This read must bypass the overlay support (as symbols
2395 don't match this target), and GDB's internal cache (wrong cache
2396 for this target). */
2397 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2399 memory_error (TARGET_XFER_E_IO
, addr
);
2403 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2404 int len
, enum bfd_endian byte_order
)
2406 gdb_byte buf
[sizeof (ULONGEST
)];
2408 gdb_assert (len
<= sizeof (buf
));
2409 get_target_memory (ops
, addr
, buf
, len
);
2410 return extract_unsigned_integer (buf
, len
, byte_order
);
2416 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2417 struct bp_target_info
*bp_tgt
)
2419 if (!may_insert_breakpoints
)
2421 warning (_("May not insert breakpoints"));
2425 return current_target
.to_insert_breakpoint (¤t_target
,
2432 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2433 struct bp_target_info
*bp_tgt
)
2435 /* This is kind of a weird case to handle, but the permission might
2436 have been changed after breakpoints were inserted - in which case
2437 we should just take the user literally and assume that any
2438 breakpoints should be left in place. */
2439 if (!may_insert_breakpoints
)
2441 warning (_("May not remove breakpoints"));
2445 return current_target
.to_remove_breakpoint (¤t_target
,
2450 target_info (char *args
, int from_tty
)
2452 struct target_ops
*t
;
2453 int has_all_mem
= 0;
2455 if (symfile_objfile
!= NULL
)
2456 printf_unfiltered (_("Symbols from \"%s\".\n"),
2457 objfile_name (symfile_objfile
));
2459 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2461 if (!(*t
->to_has_memory
) (t
))
2464 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2467 printf_unfiltered (_("\tWhile running this, "
2468 "GDB does not access memory from...\n"));
2469 printf_unfiltered ("%s:\n", t
->to_longname
);
2470 (t
->to_files_info
) (t
);
2471 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2475 /* This function is called before any new inferior is created, e.g.
2476 by running a program, attaching, or connecting to a target.
2477 It cleans up any state from previous invocations which might
2478 change between runs. This is a subset of what target_preopen
2479 resets (things which might change between targets). */
2482 target_pre_inferior (int from_tty
)
2484 /* Clear out solib state. Otherwise the solib state of the previous
2485 inferior might have survived and is entirely wrong for the new
2486 target. This has been observed on GNU/Linux using glibc 2.3. How
2498 Cannot access memory at address 0xdeadbeef
2501 /* In some OSs, the shared library list is the same/global/shared
2502 across inferiors. If code is shared between processes, so are
2503 memory regions and features. */
2504 if (!gdbarch_has_global_solist (target_gdbarch ()))
2506 no_shared_libraries (NULL
, from_tty
);
2508 invalidate_target_mem_regions ();
2510 target_clear_description ();
2513 agent_capability_invalidate ();
2516 /* Callback for iterate_over_inferiors. Gets rid of the given
2520 dispose_inferior (struct inferior
*inf
, void *args
)
2522 struct thread_info
*thread
;
2524 thread
= any_thread_of_process (inf
->pid
);
2527 switch_to_thread (thread
->ptid
);
2529 /* Core inferiors actually should be detached, not killed. */
2530 if (target_has_execution
)
2533 target_detach (NULL
, 0);
2539 /* This is to be called by the open routine before it does
2543 target_preopen (int from_tty
)
2547 if (have_inferiors ())
2550 || !have_live_inferiors ()
2551 || query (_("A program is being debugged already. Kill it? ")))
2552 iterate_over_inferiors (dispose_inferior
, NULL
);
2554 error (_("Program not killed."));
2557 /* Calling target_kill may remove the target from the stack. But if
2558 it doesn't (which seems like a win for UDI), remove it now. */
2559 /* Leave the exec target, though. The user may be switching from a
2560 live process to a core of the same program. */
2561 pop_all_targets_above (file_stratum
);
2563 target_pre_inferior (from_tty
);
2566 /* Detach a target after doing deferred register stores. */
2569 target_detach (const char *args
, int from_tty
)
2571 struct target_ops
* t
;
2573 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2574 /* Don't remove global breakpoints here. They're removed on
2575 disconnection from the target. */
2578 /* If we're in breakpoints-always-inserted mode, have to remove
2579 them before detaching. */
2580 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2582 prepare_for_detach ();
2584 current_target
.to_detach (¤t_target
, args
, from_tty
);
2586 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2591 target_disconnect (char *args
, int from_tty
)
2593 struct target_ops
*t
;
2595 /* If we're in breakpoints-always-inserted mode or if breakpoints
2596 are global across processes, we have to remove them before
2598 remove_breakpoints ();
2600 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2601 if (t
->to_disconnect
!= NULL
)
2604 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2606 t
->to_disconnect (t
, args
, from_tty
);
2614 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2616 struct target_ops
*t
;
2617 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2622 char *status_string
;
2623 char *options_string
;
2625 status_string
= target_waitstatus_to_string (status
);
2626 options_string
= target_options_to_string (options
);
2627 fprintf_unfiltered (gdb_stdlog
,
2628 "target_wait (%d, status, options={%s})"
2630 ptid_get_pid (ptid
), options_string
,
2631 ptid_get_pid (retval
), status_string
);
2632 xfree (status_string
);
2633 xfree (options_string
);
2640 target_pid_to_str (ptid_t ptid
)
2642 struct target_ops
*t
;
2644 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2646 if (t
->to_pid_to_str
!= NULL
)
2647 return (*t
->to_pid_to_str
) (t
, ptid
);
2650 return normal_pid_to_str (ptid
);
2654 target_thread_name (struct thread_info
*info
)
2656 return current_target
.to_thread_name (¤t_target
, info
);
2660 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2662 struct target_ops
*t
;
2664 target_dcache_invalidate ();
2666 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2668 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2669 ptid_get_pid (ptid
),
2670 step
? "step" : "continue",
2671 gdb_signal_to_name (signal
));
2673 registers_changed_ptid (ptid
);
2674 set_executing (ptid
, 1);
2675 set_running (ptid
, 1);
2676 clear_inline_frame_state (ptid
);
2680 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2682 struct target_ops
*t
;
2684 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2686 if (t
->to_pass_signals
!= NULL
)
2692 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2695 for (i
= 0; i
< numsigs
; i
++)
2696 if (pass_signals
[i
])
2697 fprintf_unfiltered (gdb_stdlog
, " %s",
2698 gdb_signal_to_name (i
));
2700 fprintf_unfiltered (gdb_stdlog
, " })\n");
2703 (*t
->to_pass_signals
) (t
, numsigs
, pass_signals
);
2710 target_program_signals (int numsigs
, unsigned char *program_signals
)
2712 struct target_ops
*t
;
2714 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2716 if (t
->to_program_signals
!= NULL
)
2722 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2725 for (i
= 0; i
< numsigs
; i
++)
2726 if (program_signals
[i
])
2727 fprintf_unfiltered (gdb_stdlog
, " %s",
2728 gdb_signal_to_name (i
));
2730 fprintf_unfiltered (gdb_stdlog
, " })\n");
2733 (*t
->to_program_signals
) (t
, numsigs
, program_signals
);
2739 /* Look through the list of possible targets for a target that can
2743 target_follow_fork (int follow_child
, int detach_fork
)
2745 struct target_ops
*t
;
2747 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2749 if (t
->to_follow_fork
!= NULL
)
2751 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2754 fprintf_unfiltered (gdb_stdlog
,
2755 "target_follow_fork (%d, %d) = %d\n",
2756 follow_child
, detach_fork
, retval
);
2761 /* Some target returned a fork event, but did not know how to follow it. */
2762 internal_error (__FILE__
, __LINE__
,
2763 _("could not find a target to follow fork"));
2767 target_mourn_inferior (void)
2769 struct target_ops
*t
;
2771 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2773 if (t
->to_mourn_inferior
!= NULL
)
2775 t
->to_mourn_inferior (t
);
2777 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2779 /* We no longer need to keep handles on any of the object files.
2780 Make sure to release them to avoid unnecessarily locking any
2781 of them while we're not actually debugging. */
2782 bfd_cache_close_all ();
2788 internal_error (__FILE__
, __LINE__
,
2789 _("could not find a target to follow mourn inferior"));
2792 /* Look for a target which can describe architectural features, starting
2793 from TARGET. If we find one, return its description. */
2795 const struct target_desc
*
2796 target_read_description (struct target_ops
*target
)
2798 struct target_ops
*t
;
2800 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2801 if (t
->to_read_description
!= NULL
)
2803 const struct target_desc
*tdesc
;
2805 tdesc
= t
->to_read_description (t
);
2813 /* The default implementation of to_search_memory.
2814 This implements a basic search of memory, reading target memory and
2815 performing the search here (as opposed to performing the search in on the
2816 target side with, for example, gdbserver). */
2819 simple_search_memory (struct target_ops
*ops
,
2820 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2821 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2822 CORE_ADDR
*found_addrp
)
2824 /* NOTE: also defined in find.c testcase. */
2825 #define SEARCH_CHUNK_SIZE 16000
2826 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2827 /* Buffer to hold memory contents for searching. */
2828 gdb_byte
*search_buf
;
2829 unsigned search_buf_size
;
2830 struct cleanup
*old_cleanups
;
2832 search_buf_size
= chunk_size
+ pattern_len
- 1;
2834 /* No point in trying to allocate a buffer larger than the search space. */
2835 if (search_space_len
< search_buf_size
)
2836 search_buf_size
= search_space_len
;
2838 search_buf
= malloc (search_buf_size
);
2839 if (search_buf
== NULL
)
2840 error (_("Unable to allocate memory to perform the search."));
2841 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2843 /* Prime the search buffer. */
2845 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2846 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2848 warning (_("Unable to access %s bytes of target "
2849 "memory at %s, halting search."),
2850 pulongest (search_buf_size
), hex_string (start_addr
));
2851 do_cleanups (old_cleanups
);
2855 /* Perform the search.
2857 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2858 When we've scanned N bytes we copy the trailing bytes to the start and
2859 read in another N bytes. */
2861 while (search_space_len
>= pattern_len
)
2863 gdb_byte
*found_ptr
;
2864 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2866 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2867 pattern
, pattern_len
);
2869 if (found_ptr
!= NULL
)
2871 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2873 *found_addrp
= found_addr
;
2874 do_cleanups (old_cleanups
);
2878 /* Not found in this chunk, skip to next chunk. */
2880 /* Don't let search_space_len wrap here, it's unsigned. */
2881 if (search_space_len
>= chunk_size
)
2882 search_space_len
-= chunk_size
;
2884 search_space_len
= 0;
2886 if (search_space_len
>= pattern_len
)
2888 unsigned keep_len
= search_buf_size
- chunk_size
;
2889 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2892 /* Copy the trailing part of the previous iteration to the front
2893 of the buffer for the next iteration. */
2894 gdb_assert (keep_len
== pattern_len
- 1);
2895 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2897 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2899 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2900 search_buf
+ keep_len
, read_addr
,
2901 nr_to_read
) != nr_to_read
)
2903 warning (_("Unable to access %s bytes of target "
2904 "memory at %s, halting search."),
2905 plongest (nr_to_read
),
2906 hex_string (read_addr
));
2907 do_cleanups (old_cleanups
);
2911 start_addr
+= chunk_size
;
2917 do_cleanups (old_cleanups
);
2921 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2922 sequence of bytes in PATTERN with length PATTERN_LEN.
2924 The result is 1 if found, 0 if not found, and -1 if there was an error
2925 requiring halting of the search (e.g. memory read error).
2926 If the pattern is found the address is recorded in FOUND_ADDRP. */
2929 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2930 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2931 CORE_ADDR
*found_addrp
)
2933 struct target_ops
*t
;
2936 /* We don't use INHERIT to set current_target.to_search_memory,
2937 so we have to scan the target stack and handle targetdebug
2941 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2942 hex_string (start_addr
));
2944 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2945 if (t
->to_search_memory
!= NULL
)
2950 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2951 pattern
, pattern_len
, found_addrp
);
2955 /* If a special version of to_search_memory isn't available, use the
2957 found
= simple_search_memory (current_target
.beneath
,
2958 start_addr
, search_space_len
,
2959 pattern
, pattern_len
, found_addrp
);
2963 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2968 /* Look through the currently pushed targets. If none of them will
2969 be able to restart the currently running process, issue an error
2973 target_require_runnable (void)
2975 struct target_ops
*t
;
2977 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2979 /* If this target knows how to create a new program, then
2980 assume we will still be able to after killing the current
2981 one. Either killing and mourning will not pop T, or else
2982 find_default_run_target will find it again. */
2983 if (t
->to_create_inferior
!= NULL
)
2986 /* Do not worry about thread_stratum targets that can not
2987 create inferiors. Assume they will be pushed again if
2988 necessary, and continue to the process_stratum. */
2989 if (t
->to_stratum
== thread_stratum
2990 || t
->to_stratum
== arch_stratum
)
2993 error (_("The \"%s\" target does not support \"run\". "
2994 "Try \"help target\" or \"continue\"."),
2998 /* This function is only called if the target is running. In that
2999 case there should have been a process_stratum target and it
3000 should either know how to create inferiors, or not... */
3001 internal_error (__FILE__
, __LINE__
, _("No targets found"));
3004 /* Look through the list of possible targets for a target that can
3005 execute a run or attach command without any other data. This is
3006 used to locate the default process stratum.
3008 If DO_MESG is not NULL, the result is always valid (error() is
3009 called for errors); else, return NULL on error. */
3011 static struct target_ops
*
3012 find_default_run_target (char *do_mesg
)
3014 struct target_ops
**t
;
3015 struct target_ops
*runable
= NULL
;
3020 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3023 if ((*t
)->to_can_run
&& target_can_run (*t
))
3033 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3042 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3044 struct target_ops
*t
;
3046 t
= find_default_run_target ("attach");
3047 (t
->to_attach
) (t
, args
, from_tty
);
3052 find_default_create_inferior (struct target_ops
*ops
,
3053 char *exec_file
, char *allargs
, char **env
,
3056 struct target_ops
*t
;
3058 t
= find_default_run_target ("run");
3059 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3064 find_default_can_async_p (struct target_ops
*ignore
)
3066 struct target_ops
*t
;
3068 /* This may be called before the target is pushed on the stack;
3069 look for the default process stratum. If there's none, gdb isn't
3070 configured with a native debugger, and target remote isn't
3072 t
= find_default_run_target (NULL
);
3073 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
3074 return (t
->to_can_async_p
) (t
);
3079 find_default_is_async_p (struct target_ops
*ignore
)
3081 struct target_ops
*t
;
3083 /* This may be called before the target is pushed on the stack;
3084 look for the default process stratum. If there's none, gdb isn't
3085 configured with a native debugger, and target remote isn't
3087 t
= find_default_run_target (NULL
);
3088 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
3089 return (t
->to_is_async_p
) (t
);
3094 find_default_supports_non_stop (struct target_ops
*self
)
3096 struct target_ops
*t
;
3098 t
= find_default_run_target (NULL
);
3099 if (t
&& t
->to_supports_non_stop
)
3100 return (t
->to_supports_non_stop
) (t
);
3105 target_supports_non_stop (void)
3107 struct target_ops
*t
;
3109 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3110 if (t
->to_supports_non_stop
)
3111 return t
->to_supports_non_stop (t
);
3116 /* Implement the "info proc" command. */
3119 target_info_proc (char *args
, enum info_proc_what what
)
3121 struct target_ops
*t
;
3123 /* If we're already connected to something that can get us OS
3124 related data, use it. Otherwise, try using the native
3126 if (current_target
.to_stratum
>= process_stratum
)
3127 t
= current_target
.beneath
;
3129 t
= find_default_run_target (NULL
);
3131 for (; t
!= NULL
; t
= t
->beneath
)
3133 if (t
->to_info_proc
!= NULL
)
3135 t
->to_info_proc (t
, args
, what
);
3138 fprintf_unfiltered (gdb_stdlog
,
3139 "target_info_proc (\"%s\", %d)\n", args
, what
);
3149 find_default_supports_disable_randomization (struct target_ops
*self
)
3151 struct target_ops
*t
;
3153 t
= find_default_run_target (NULL
);
3154 if (t
&& t
->to_supports_disable_randomization
)
3155 return (t
->to_supports_disable_randomization
) (t
);
3160 target_supports_disable_randomization (void)
3162 struct target_ops
*t
;
3164 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3165 if (t
->to_supports_disable_randomization
)
3166 return t
->to_supports_disable_randomization (t
);
3172 target_get_osdata (const char *type
)
3174 struct target_ops
*t
;
3176 /* If we're already connected to something that can get us OS
3177 related data, use it. Otherwise, try using the native
3179 if (current_target
.to_stratum
>= process_stratum
)
3180 t
= current_target
.beneath
;
3182 t
= find_default_run_target ("get OS data");
3187 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3190 /* Determine the current address space of thread PTID. */
3192 struct address_space
*
3193 target_thread_address_space (ptid_t ptid
)
3195 struct address_space
*aspace
;
3196 struct inferior
*inf
;
3197 struct target_ops
*t
;
3199 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3201 if (t
->to_thread_address_space
!= NULL
)
3203 aspace
= t
->to_thread_address_space (t
, ptid
);
3204 gdb_assert (aspace
);
3207 fprintf_unfiltered (gdb_stdlog
,
3208 "target_thread_address_space (%s) = %d\n",
3209 target_pid_to_str (ptid
),
3210 address_space_num (aspace
));
3215 /* Fall-back to the "main" address space of the inferior. */
3216 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3218 if (inf
== NULL
|| inf
->aspace
== NULL
)
3219 internal_error (__FILE__
, __LINE__
,
3220 _("Can't determine the current "
3221 "address space of thread %s\n"),
3222 target_pid_to_str (ptid
));
3228 /* Target file operations. */
3230 static struct target_ops
*
3231 default_fileio_target (void)
3233 /* If we're already connected to something that can perform
3234 file I/O, use it. Otherwise, try using the native target. */
3235 if (current_target
.to_stratum
>= process_stratum
)
3236 return current_target
.beneath
;
3238 return find_default_run_target ("file I/O");
3241 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3242 target file descriptor, or -1 if an error occurs (and set
3245 target_fileio_open (const char *filename
, int flags
, int mode
,
3248 struct target_ops
*t
;
3250 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3252 if (t
->to_fileio_open
!= NULL
)
3254 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3257 fprintf_unfiltered (gdb_stdlog
,
3258 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3259 filename
, flags
, mode
,
3260 fd
, fd
!= -1 ? 0 : *target_errno
);
3265 *target_errno
= FILEIO_ENOSYS
;
3269 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3270 Return the number of bytes written, or -1 if an error occurs
3271 (and set *TARGET_ERRNO). */
3273 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3274 ULONGEST offset
, int *target_errno
)
3276 struct target_ops
*t
;
3278 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3280 if (t
->to_fileio_pwrite
!= NULL
)
3282 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3286 fprintf_unfiltered (gdb_stdlog
,
3287 "target_fileio_pwrite (%d,...,%d,%s) "
3289 fd
, len
, pulongest (offset
),
3290 ret
, ret
!= -1 ? 0 : *target_errno
);
3295 *target_errno
= FILEIO_ENOSYS
;
3299 /* Read up to LEN bytes FD on the target into READ_BUF.
3300 Return the number of bytes read, or -1 if an error occurs
3301 (and set *TARGET_ERRNO). */
3303 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3304 ULONGEST offset
, int *target_errno
)
3306 struct target_ops
*t
;
3308 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3310 if (t
->to_fileio_pread
!= NULL
)
3312 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3316 fprintf_unfiltered (gdb_stdlog
,
3317 "target_fileio_pread (%d,...,%d,%s) "
3319 fd
, len
, pulongest (offset
),
3320 ret
, ret
!= -1 ? 0 : *target_errno
);
3325 *target_errno
= FILEIO_ENOSYS
;
3329 /* Close FD on the target. Return 0, or -1 if an error occurs
3330 (and set *TARGET_ERRNO). */
3332 target_fileio_close (int fd
, int *target_errno
)
3334 struct target_ops
*t
;
3336 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3338 if (t
->to_fileio_close
!= NULL
)
3340 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3343 fprintf_unfiltered (gdb_stdlog
,
3344 "target_fileio_close (%d) = %d (%d)\n",
3345 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3350 *target_errno
= FILEIO_ENOSYS
;
3354 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3355 occurs (and set *TARGET_ERRNO). */
3357 target_fileio_unlink (const char *filename
, int *target_errno
)
3359 struct target_ops
*t
;
3361 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3363 if (t
->to_fileio_unlink
!= NULL
)
3365 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3368 fprintf_unfiltered (gdb_stdlog
,
3369 "target_fileio_unlink (%s) = %d (%d)\n",
3370 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3375 *target_errno
= FILEIO_ENOSYS
;
3379 /* Read value of symbolic link FILENAME on the target. Return a
3380 null-terminated string allocated via xmalloc, or NULL if an error
3381 occurs (and set *TARGET_ERRNO). */
3383 target_fileio_readlink (const char *filename
, int *target_errno
)
3385 struct target_ops
*t
;
3387 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3389 if (t
->to_fileio_readlink
!= NULL
)
3391 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3394 fprintf_unfiltered (gdb_stdlog
,
3395 "target_fileio_readlink (%s) = %s (%d)\n",
3396 filename
, ret
? ret
: "(nil)",
3397 ret
? 0 : *target_errno
);
3402 *target_errno
= FILEIO_ENOSYS
;
3407 target_fileio_close_cleanup (void *opaque
)
3409 int fd
= *(int *) opaque
;
3412 target_fileio_close (fd
, &target_errno
);
3415 /* Read target file FILENAME. Store the result in *BUF_P and
3416 return the size of the transferred data. PADDING additional bytes are
3417 available in *BUF_P. This is a helper function for
3418 target_fileio_read_alloc; see the declaration of that function for more
3422 target_fileio_read_alloc_1 (const char *filename
,
3423 gdb_byte
**buf_p
, int padding
)
3425 struct cleanup
*close_cleanup
;
3426 size_t buf_alloc
, buf_pos
;
3432 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3436 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3438 /* Start by reading up to 4K at a time. The target will throttle
3439 this number down if necessary. */
3441 buf
= xmalloc (buf_alloc
);
3445 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3446 buf_alloc
- buf_pos
- padding
, buf_pos
,
3450 /* An error occurred. */
3451 do_cleanups (close_cleanup
);
3457 /* Read all there was. */
3458 do_cleanups (close_cleanup
);
3468 /* If the buffer is filling up, expand it. */
3469 if (buf_alloc
< buf_pos
* 2)
3472 buf
= xrealloc (buf
, buf_alloc
);
3479 /* Read target file FILENAME. Store the result in *BUF_P and return
3480 the size of the transferred data. See the declaration in "target.h"
3481 function for more information about the return value. */
3484 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3486 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3489 /* Read target file FILENAME. The result is NUL-terminated and
3490 returned as a string, allocated using xmalloc. If an error occurs
3491 or the transfer is unsupported, NULL is returned. Empty objects
3492 are returned as allocated but empty strings. A warning is issued
3493 if the result contains any embedded NUL bytes. */
3496 target_fileio_read_stralloc (const char *filename
)
3500 LONGEST i
, transferred
;
3502 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3503 bufstr
= (char *) buffer
;
3505 if (transferred
< 0)
3508 if (transferred
== 0)
3509 return xstrdup ("");
3511 bufstr
[transferred
] = 0;
3513 /* Check for embedded NUL bytes; but allow trailing NULs. */
3514 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3517 warning (_("target file %s "
3518 "contained unexpected null characters"),
3528 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3529 CORE_ADDR addr
, int len
)
3531 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3535 default_watchpoint_addr_within_range (struct target_ops
*target
,
3537 CORE_ADDR start
, int length
)
3539 return addr
>= start
&& addr
< start
+ length
;
3542 static struct gdbarch
*
3543 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3545 return target_gdbarch ();
3555 return_minus_one (void)
3567 * Find the next target down the stack from the specified target.
3571 find_target_beneath (struct target_ops
*t
)
3579 find_target_at (enum strata stratum
)
3581 struct target_ops
*t
;
3583 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3584 if (t
->to_stratum
== stratum
)
3591 /* The inferior process has died. Long live the inferior! */
3594 generic_mourn_inferior (void)
3598 ptid
= inferior_ptid
;
3599 inferior_ptid
= null_ptid
;
3601 /* Mark breakpoints uninserted in case something tries to delete a
3602 breakpoint while we delete the inferior's threads (which would
3603 fail, since the inferior is long gone). */
3604 mark_breakpoints_out ();
3606 if (!ptid_equal (ptid
, null_ptid
))
3608 int pid
= ptid_get_pid (ptid
);
3609 exit_inferior (pid
);
3612 /* Note this wipes step-resume breakpoints, so needs to be done
3613 after exit_inferior, which ends up referencing the step-resume
3614 breakpoints through clear_thread_inferior_resources. */
3615 breakpoint_init_inferior (inf_exited
);
3617 registers_changed ();
3619 reopen_exec_file ();
3620 reinit_frame_cache ();
3622 if (deprecated_detach_hook
)
3623 deprecated_detach_hook ();
3626 /* Convert a normal process ID to a string. Returns the string in a
3630 normal_pid_to_str (ptid_t ptid
)
3632 static char buf
[32];
3634 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3639 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3641 return normal_pid_to_str (ptid
);
3644 /* Error-catcher for target_find_memory_regions. */
3646 dummy_find_memory_regions (struct target_ops
*self
,
3647 find_memory_region_ftype ignore1
, void *ignore2
)
3649 error (_("Command not implemented for this target."));
3653 /* Error-catcher for target_make_corefile_notes. */
3655 dummy_make_corefile_notes (struct target_ops
*self
,
3656 bfd
*ignore1
, int *ignore2
)
3658 error (_("Command not implemented for this target."));
3662 /* Set up the handful of non-empty slots needed by the dummy target
3666 init_dummy_target (void)
3668 dummy_target
.to_shortname
= "None";
3669 dummy_target
.to_longname
= "None";
3670 dummy_target
.to_doc
= "";
3671 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3672 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3673 dummy_target
.to_supports_disable_randomization
3674 = find_default_supports_disable_randomization
;
3675 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3676 dummy_target
.to_stratum
= dummy_stratum
;
3677 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3678 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3679 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3680 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3681 dummy_target
.to_has_execution
3682 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3683 dummy_target
.to_magic
= OPS_MAGIC
;
3685 install_dummy_methods (&dummy_target
);
3689 debug_to_open (char *args
, int from_tty
)
3691 debug_target
.to_open (args
, from_tty
);
3693 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3697 target_close (struct target_ops
*targ
)
3699 gdb_assert (!target_is_pushed (targ
));
3701 if (targ
->to_xclose
!= NULL
)
3702 targ
->to_xclose (targ
);
3703 else if (targ
->to_close
!= NULL
)
3704 targ
->to_close (targ
);
3707 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3711 target_attach (char *args
, int from_tty
)
3713 current_target
.to_attach (¤t_target
, args
, from_tty
);
3715 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3720 target_thread_alive (ptid_t ptid
)
3722 struct target_ops
*t
;
3724 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3726 if (t
->to_thread_alive
!= NULL
)
3730 retval
= t
->to_thread_alive (t
, ptid
);
3732 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3733 ptid_get_pid (ptid
), retval
);
3743 target_find_new_threads (void)
3745 struct target_ops
*t
;
3747 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3749 if (t
->to_find_new_threads
!= NULL
)
3751 t
->to_find_new_threads (t
);
3753 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3761 target_stop (ptid_t ptid
)
3765 warning (_("May not interrupt or stop the target, ignoring attempt"));
3769 (*current_target
.to_stop
) (¤t_target
, ptid
);
3773 debug_to_post_attach (struct target_ops
*self
, int pid
)
3775 debug_target
.to_post_attach (&debug_target
, pid
);
3777 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3780 /* Concatenate ELEM to LIST, a comma separate list, and return the
3781 result. The LIST incoming argument is released. */
3784 str_comma_list_concat_elem (char *list
, const char *elem
)
3787 return xstrdup (elem
);
3789 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3792 /* Helper for target_options_to_string. If OPT is present in
3793 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3794 Returns the new resulting string. OPT is removed from
3798 do_option (int *target_options
, char *ret
,
3799 int opt
, char *opt_str
)
3801 if ((*target_options
& opt
) != 0)
3803 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3804 *target_options
&= ~opt
;
3811 target_options_to_string (int target_options
)
3815 #define DO_TARG_OPTION(OPT) \
3816 ret = do_option (&target_options, ret, OPT, #OPT)
3818 DO_TARG_OPTION (TARGET_WNOHANG
);
3820 if (target_options
!= 0)
3821 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3829 debug_print_register (const char * func
,
3830 struct regcache
*regcache
, int regno
)
3832 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3834 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3835 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3836 && gdbarch_register_name (gdbarch
, regno
) != NULL
3837 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3838 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3839 gdbarch_register_name (gdbarch
, regno
));
3841 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3842 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3844 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3845 int i
, size
= register_size (gdbarch
, regno
);
3846 gdb_byte buf
[MAX_REGISTER_SIZE
];
3848 regcache_raw_collect (regcache
, regno
, buf
);
3849 fprintf_unfiltered (gdb_stdlog
, " = ");
3850 for (i
= 0; i
< size
; i
++)
3852 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3854 if (size
<= sizeof (LONGEST
))
3856 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3858 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3859 core_addr_to_string_nz (val
), plongest (val
));
3862 fprintf_unfiltered (gdb_stdlog
, "\n");
3866 target_fetch_registers (struct regcache
*regcache
, int regno
)
3868 struct target_ops
*t
;
3870 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3872 if (t
->to_fetch_registers
!= NULL
)
3874 t
->to_fetch_registers (t
, regcache
, regno
);
3876 debug_print_register ("target_fetch_registers", regcache
, regno
);
3883 target_store_registers (struct regcache
*regcache
, int regno
)
3885 struct target_ops
*t
;
3887 if (!may_write_registers
)
3888 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3890 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3893 debug_print_register ("target_store_registers", regcache
, regno
);
3898 target_core_of_thread (ptid_t ptid
)
3900 struct target_ops
*t
;
3902 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3904 if (t
->to_core_of_thread
!= NULL
)
3906 int retval
= t
->to_core_of_thread (t
, ptid
);
3909 fprintf_unfiltered (gdb_stdlog
,
3910 "target_core_of_thread (%d) = %d\n",
3911 ptid_get_pid (ptid
), retval
);
3920 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3922 struct target_ops
*t
;
3924 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3926 if (t
->to_verify_memory
!= NULL
)
3928 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3931 fprintf_unfiltered (gdb_stdlog
,
3932 "target_verify_memory (%s, %s) = %d\n",
3933 paddress (target_gdbarch (), memaddr
),
3943 /* The documentation for this function is in its prototype declaration in
3947 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3949 struct target_ops
*t
;
3951 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3952 if (t
->to_insert_mask_watchpoint
!= NULL
)
3956 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
3959 fprintf_unfiltered (gdb_stdlog
, "\
3960 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3961 core_addr_to_string (addr
),
3962 core_addr_to_string (mask
), rw
, ret
);
3970 /* The documentation for this function is in its prototype declaration in
3974 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3976 struct target_ops
*t
;
3978 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3979 if (t
->to_remove_mask_watchpoint
!= NULL
)
3983 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
3986 fprintf_unfiltered (gdb_stdlog
, "\
3987 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3988 core_addr_to_string (addr
),
3989 core_addr_to_string (mask
), rw
, ret
);
3997 /* The documentation for this function is in its prototype declaration
4001 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4003 struct target_ops
*t
;
4005 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4006 if (t
->to_masked_watch_num_registers
!= NULL
)
4007 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4012 /* The documentation for this function is in its prototype declaration
4016 target_ranged_break_num_registers (void)
4018 struct target_ops
*t
;
4020 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4021 if (t
->to_ranged_break_num_registers
!= NULL
)
4022 return t
->to_ranged_break_num_registers (t
);
4029 struct btrace_target_info
*
4030 target_enable_btrace (ptid_t ptid
)
4032 struct target_ops
*t
;
4034 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4035 if (t
->to_enable_btrace
!= NULL
)
4036 return t
->to_enable_btrace (t
, ptid
);
4045 target_disable_btrace (struct btrace_target_info
*btinfo
)
4047 struct target_ops
*t
;
4049 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4050 if (t
->to_disable_btrace
!= NULL
)
4052 t
->to_disable_btrace (t
, btinfo
);
4062 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4064 struct target_ops
*t
;
4066 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4067 if (t
->to_teardown_btrace
!= NULL
)
4069 t
->to_teardown_btrace (t
, btinfo
);
4079 target_read_btrace (VEC (btrace_block_s
) **btrace
,
4080 struct btrace_target_info
*btinfo
,
4081 enum btrace_read_type type
)
4083 struct target_ops
*t
;
4085 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4086 if (t
->to_read_btrace
!= NULL
)
4087 return t
->to_read_btrace (t
, btrace
, btinfo
, type
);
4090 return BTRACE_ERR_NOT_SUPPORTED
;
4096 target_stop_recording (void)
4098 struct target_ops
*t
;
4100 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4101 if (t
->to_stop_recording
!= NULL
)
4103 t
->to_stop_recording (t
);
4107 /* This is optional. */
4113 target_info_record (void)
4115 struct target_ops
*t
;
4117 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4118 if (t
->to_info_record
!= NULL
)
4120 t
->to_info_record (t
);
4130 target_save_record (const char *filename
)
4132 struct target_ops
*t
;
4134 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4135 if (t
->to_save_record
!= NULL
)
4137 t
->to_save_record (t
, filename
);
4147 target_supports_delete_record (void)
4149 struct target_ops
*t
;
4151 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4152 if (t
->to_delete_record
!= NULL
)
4161 target_delete_record (void)
4163 struct target_ops
*t
;
4165 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4166 if (t
->to_delete_record
!= NULL
)
4168 t
->to_delete_record (t
);
4178 target_record_is_replaying (void)
4180 struct target_ops
*t
;
4182 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4183 if (t
->to_record_is_replaying
!= NULL
)
4184 return t
->to_record_is_replaying (t
);
4192 target_goto_record_begin (void)
4194 struct target_ops
*t
;
4196 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4197 if (t
->to_goto_record_begin
!= NULL
)
4199 t
->to_goto_record_begin (t
);
4209 target_goto_record_end (void)
4211 struct target_ops
*t
;
4213 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4214 if (t
->to_goto_record_end
!= NULL
)
4216 t
->to_goto_record_end (t
);
4226 target_goto_record (ULONGEST insn
)
4228 struct target_ops
*t
;
4230 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4231 if (t
->to_goto_record
!= NULL
)
4233 t
->to_goto_record (t
, insn
);
4243 target_insn_history (int size
, int flags
)
4245 struct target_ops
*t
;
4247 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4248 if (t
->to_insn_history
!= NULL
)
4250 t
->to_insn_history (t
, size
, flags
);
4260 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4262 struct target_ops
*t
;
4264 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4265 if (t
->to_insn_history_from
!= NULL
)
4267 t
->to_insn_history_from (t
, from
, size
, flags
);
4277 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4279 struct target_ops
*t
;
4281 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4282 if (t
->to_insn_history_range
!= NULL
)
4284 t
->to_insn_history_range (t
, begin
, end
, flags
);
4294 target_call_history (int size
, int flags
)
4296 struct target_ops
*t
;
4298 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4299 if (t
->to_call_history
!= NULL
)
4301 t
->to_call_history (t
, size
, flags
);
4311 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4313 struct target_ops
*t
;
4315 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4316 if (t
->to_call_history_from
!= NULL
)
4318 t
->to_call_history_from (t
, begin
, size
, flags
);
4328 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4330 struct target_ops
*t
;
4332 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4333 if (t
->to_call_history_range
!= NULL
)
4335 t
->to_call_history_range (t
, begin
, end
, flags
);
4343 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
4345 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
4347 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4352 const struct frame_unwind
*
4353 target_get_unwinder (void)
4355 struct target_ops
*t
;
4357 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4358 if (t
->to_get_unwinder
!= NULL
)
4359 return t
->to_get_unwinder
;
4366 const struct frame_unwind
*
4367 target_get_tailcall_unwinder (void)
4369 struct target_ops
*t
;
4371 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4372 if (t
->to_get_tailcall_unwinder
!= NULL
)
4373 return t
->to_get_tailcall_unwinder
;
4381 forward_target_decr_pc_after_break (struct target_ops
*ops
,
4382 struct gdbarch
*gdbarch
)
4384 for (; ops
!= NULL
; ops
= ops
->beneath
)
4385 if (ops
->to_decr_pc_after_break
!= NULL
)
4386 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
4388 return gdbarch_decr_pc_after_break (gdbarch
);
4394 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
4396 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
4400 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4401 int write
, struct mem_attrib
*attrib
,
4402 struct target_ops
*target
)
4406 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4409 fprintf_unfiltered (gdb_stdlog
,
4410 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4411 paddress (target_gdbarch (), memaddr
), len
,
4412 write
? "write" : "read", retval
);
4418 fputs_unfiltered (", bytes =", gdb_stdlog
);
4419 for (i
= 0; i
< retval
; i
++)
4421 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4423 if (targetdebug
< 2 && i
> 0)
4425 fprintf_unfiltered (gdb_stdlog
, " ...");
4428 fprintf_unfiltered (gdb_stdlog
, "\n");
4431 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4435 fputc_unfiltered ('\n', gdb_stdlog
);
4441 debug_to_files_info (struct target_ops
*target
)
4443 debug_target
.to_files_info (target
);
4445 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4449 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4450 struct bp_target_info
*bp_tgt
)
4454 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4456 fprintf_unfiltered (gdb_stdlog
,
4457 "target_insert_breakpoint (%s, xxx) = %ld\n",
4458 core_addr_to_string (bp_tgt
->placed_address
),
4459 (unsigned long) retval
);
4464 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4465 struct bp_target_info
*bp_tgt
)
4469 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4471 fprintf_unfiltered (gdb_stdlog
,
4472 "target_remove_breakpoint (%s, xxx) = %ld\n",
4473 core_addr_to_string (bp_tgt
->placed_address
),
4474 (unsigned long) retval
);
4479 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4480 int type
, int cnt
, int from_tty
)
4484 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4485 type
, cnt
, from_tty
);
4487 fprintf_unfiltered (gdb_stdlog
,
4488 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4489 (unsigned long) type
,
4490 (unsigned long) cnt
,
4491 (unsigned long) from_tty
,
4492 (unsigned long) retval
);
4497 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4498 CORE_ADDR addr
, int len
)
4502 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4505 fprintf_unfiltered (gdb_stdlog
,
4506 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4507 core_addr_to_string (addr
), (unsigned long) len
,
4508 core_addr_to_string (retval
));
4513 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4514 CORE_ADDR addr
, int len
, int rw
,
4515 struct expression
*cond
)
4519 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4523 fprintf_unfiltered (gdb_stdlog
,
4524 "target_can_accel_watchpoint_condition "
4525 "(%s, %d, %d, %s) = %ld\n",
4526 core_addr_to_string (addr
), len
, rw
,
4527 host_address_to_string (cond
), (unsigned long) retval
);
4532 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4536 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4538 fprintf_unfiltered (gdb_stdlog
,
4539 "target_stopped_by_watchpoint () = %ld\n",
4540 (unsigned long) retval
);
4545 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4549 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4551 fprintf_unfiltered (gdb_stdlog
,
4552 "target_stopped_data_address ([%s]) = %ld\n",
4553 core_addr_to_string (*addr
),
4554 (unsigned long)retval
);
4559 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4561 CORE_ADDR start
, int length
)
4565 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4568 fprintf_filtered (gdb_stdlog
,
4569 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4570 core_addr_to_string (addr
), core_addr_to_string (start
),
4576 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4577 struct gdbarch
*gdbarch
,
4578 struct bp_target_info
*bp_tgt
)
4582 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4585 fprintf_unfiltered (gdb_stdlog
,
4586 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4587 core_addr_to_string (bp_tgt
->placed_address
),
4588 (unsigned long) retval
);
4593 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4594 struct gdbarch
*gdbarch
,
4595 struct bp_target_info
*bp_tgt
)
4599 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4602 fprintf_unfiltered (gdb_stdlog
,
4603 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4604 core_addr_to_string (bp_tgt
->placed_address
),
4605 (unsigned long) retval
);
4610 debug_to_insert_watchpoint (struct target_ops
*self
,
4611 CORE_ADDR addr
, int len
, int type
,
4612 struct expression
*cond
)
4616 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4617 addr
, len
, type
, cond
);
4619 fprintf_unfiltered (gdb_stdlog
,
4620 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4621 core_addr_to_string (addr
), len
, type
,
4622 host_address_to_string (cond
), (unsigned long) retval
);
4627 debug_to_remove_watchpoint (struct target_ops
*self
,
4628 CORE_ADDR addr
, int len
, int type
,
4629 struct expression
*cond
)
4633 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4634 addr
, len
, type
, cond
);
4636 fprintf_unfiltered (gdb_stdlog
,
4637 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4638 core_addr_to_string (addr
), len
, type
,
4639 host_address_to_string (cond
), (unsigned long) retval
);
4644 debug_to_terminal_init (struct target_ops
*self
)
4646 debug_target
.to_terminal_init (&debug_target
);
4648 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4652 debug_to_terminal_inferior (struct target_ops
*self
)
4654 debug_target
.to_terminal_inferior (&debug_target
);
4656 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4660 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4662 debug_target
.to_terminal_ours_for_output (&debug_target
);
4664 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4668 debug_to_terminal_ours (struct target_ops
*self
)
4670 debug_target
.to_terminal_ours (&debug_target
);
4672 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4676 debug_to_terminal_save_ours (struct target_ops
*self
)
4678 debug_target
.to_terminal_save_ours (&debug_target
);
4680 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4684 debug_to_terminal_info (struct target_ops
*self
,
4685 const char *arg
, int from_tty
)
4687 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4689 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4694 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4696 debug_target
.to_load (&debug_target
, args
, from_tty
);
4698 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4702 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4704 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4706 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4707 ptid_get_pid (ptid
));
4711 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4715 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4717 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4724 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4728 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4730 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4737 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4741 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4743 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4750 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4754 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4756 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4763 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4767 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4769 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4776 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4780 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4782 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4789 debug_to_has_exited (struct target_ops
*self
,
4790 int pid
, int wait_status
, int *exit_status
)
4794 has_exited
= debug_target
.to_has_exited (&debug_target
,
4795 pid
, wait_status
, exit_status
);
4797 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4798 pid
, wait_status
, *exit_status
, has_exited
);
4804 debug_to_can_run (struct target_ops
*self
)
4808 retval
= debug_target
.to_can_run (&debug_target
);
4810 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4815 static struct gdbarch
*
4816 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4818 struct gdbarch
*retval
;
4820 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4822 fprintf_unfiltered (gdb_stdlog
,
4823 "target_thread_architecture (%s) = %s [%s]\n",
4824 target_pid_to_str (ptid
),
4825 host_address_to_string (retval
),
4826 gdbarch_bfd_arch_info (retval
)->printable_name
);
4831 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4833 debug_target
.to_stop (&debug_target
, ptid
);
4835 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4836 target_pid_to_str (ptid
));
4840 debug_to_rcmd (struct target_ops
*self
, char *command
,
4841 struct ui_file
*outbuf
)
4843 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4844 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4848 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4852 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4854 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4861 setup_target_debug (void)
4863 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4865 current_target
.to_open
= debug_to_open
;
4866 current_target
.to_post_attach
= debug_to_post_attach
;
4867 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4868 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4869 current_target
.to_files_info
= debug_to_files_info
;
4870 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4871 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4872 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4873 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4874 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4875 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4876 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4877 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4878 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4879 current_target
.to_watchpoint_addr_within_range
4880 = debug_to_watchpoint_addr_within_range
;
4881 current_target
.to_region_ok_for_hw_watchpoint
4882 = debug_to_region_ok_for_hw_watchpoint
;
4883 current_target
.to_can_accel_watchpoint_condition
4884 = debug_to_can_accel_watchpoint_condition
;
4885 current_target
.to_terminal_init
= debug_to_terminal_init
;
4886 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4887 current_target
.to_terminal_ours_for_output
4888 = debug_to_terminal_ours_for_output
;
4889 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4890 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4891 current_target
.to_terminal_info
= debug_to_terminal_info
;
4892 current_target
.to_load
= debug_to_load
;
4893 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4894 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4895 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4896 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4897 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4898 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4899 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4900 current_target
.to_has_exited
= debug_to_has_exited
;
4901 current_target
.to_can_run
= debug_to_can_run
;
4902 current_target
.to_stop
= debug_to_stop
;
4903 current_target
.to_rcmd
= debug_to_rcmd
;
4904 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4905 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4909 static char targ_desc
[] =
4910 "Names of targets and files being debugged.\nShows the entire \
4911 stack of targets currently in use (including the exec-file,\n\
4912 core-file, and process, if any), as well as the symbol file name.";
4915 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4917 error (_("\"monitor\" command not supported by this target."));
4921 do_monitor_command (char *cmd
,
4924 target_rcmd (cmd
, gdb_stdtarg
);
4927 /* Print the name of each layers of our target stack. */
4930 maintenance_print_target_stack (char *cmd
, int from_tty
)
4932 struct target_ops
*t
;
4934 printf_filtered (_("The current target stack is:\n"));
4936 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4938 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4942 /* Controls if async mode is permitted. */
4943 int target_async_permitted
= 0;
4945 /* The set command writes to this variable. If the inferior is
4946 executing, target_async_permitted is *not* updated. */
4947 static int target_async_permitted_1
= 0;
4950 set_target_async_command (char *args
, int from_tty
,
4951 struct cmd_list_element
*c
)
4953 if (have_live_inferiors ())
4955 target_async_permitted_1
= target_async_permitted
;
4956 error (_("Cannot change this setting while the inferior is running."));
4959 target_async_permitted
= target_async_permitted_1
;
4963 show_target_async_command (struct ui_file
*file
, int from_tty
,
4964 struct cmd_list_element
*c
,
4967 fprintf_filtered (file
,
4968 _("Controlling the inferior in "
4969 "asynchronous mode is %s.\n"), value
);
4972 /* Temporary copies of permission settings. */
4974 static int may_write_registers_1
= 1;
4975 static int may_write_memory_1
= 1;
4976 static int may_insert_breakpoints_1
= 1;
4977 static int may_insert_tracepoints_1
= 1;
4978 static int may_insert_fast_tracepoints_1
= 1;
4979 static int may_stop_1
= 1;
4981 /* Make the user-set values match the real values again. */
4984 update_target_permissions (void)
4986 may_write_registers_1
= may_write_registers
;
4987 may_write_memory_1
= may_write_memory
;
4988 may_insert_breakpoints_1
= may_insert_breakpoints
;
4989 may_insert_tracepoints_1
= may_insert_tracepoints
;
4990 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4991 may_stop_1
= may_stop
;
4994 /* The one function handles (most of) the permission flags in the same
4998 set_target_permissions (char *args
, int from_tty
,
4999 struct cmd_list_element
*c
)
5001 if (target_has_execution
)
5003 update_target_permissions ();
5004 error (_("Cannot change this setting while the inferior is running."));
5007 /* Make the real values match the user-changed values. */
5008 may_write_registers
= may_write_registers_1
;
5009 may_insert_breakpoints
= may_insert_breakpoints_1
;
5010 may_insert_tracepoints
= may_insert_tracepoints_1
;
5011 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
5012 may_stop
= may_stop_1
;
5013 update_observer_mode ();
5016 /* Set memory write permission independently of observer mode. */
5019 set_write_memory_permission (char *args
, int from_tty
,
5020 struct cmd_list_element
*c
)
5022 /* Make the real values match the user-changed values. */
5023 may_write_memory
= may_write_memory_1
;
5024 update_observer_mode ();
5029 initialize_targets (void)
5031 init_dummy_target ();
5032 push_target (&dummy_target
);
5034 add_info ("target", target_info
, targ_desc
);
5035 add_info ("files", target_info
, targ_desc
);
5037 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
5038 Set target debugging."), _("\
5039 Show target debugging."), _("\
5040 When non-zero, target debugging is enabled. Higher numbers are more\n\
5041 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
5045 &setdebuglist
, &showdebuglist
);
5047 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
5048 &trust_readonly
, _("\
5049 Set mode for reading from readonly sections."), _("\
5050 Show mode for reading from readonly sections."), _("\
5051 When this mode is on, memory reads from readonly sections (such as .text)\n\
5052 will be read from the object file instead of from the target. This will\n\
5053 result in significant performance improvement for remote targets."),
5055 show_trust_readonly
,
5056 &setlist
, &showlist
);
5058 add_com ("monitor", class_obscure
, do_monitor_command
,
5059 _("Send a command to the remote monitor (remote targets only)."));
5061 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5062 _("Print the name of each layer of the internal target stack."),
5063 &maintenanceprintlist
);
5065 add_setshow_boolean_cmd ("target-async", no_class
,
5066 &target_async_permitted_1
, _("\
5067 Set whether gdb controls the inferior in asynchronous mode."), _("\
5068 Show whether gdb controls the inferior in asynchronous mode."), _("\
5069 Tells gdb whether to control the inferior in asynchronous mode."),
5070 set_target_async_command
,
5071 show_target_async_command
,
5075 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5076 &may_write_registers_1
, _("\
5077 Set permission to write into registers."), _("\
5078 Show permission to write into registers."), _("\
5079 When this permission is on, GDB may write into the target's registers.\n\
5080 Otherwise, any sort of write attempt will result in an error."),
5081 set_target_permissions
, NULL
,
5082 &setlist
, &showlist
);
5084 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5085 &may_write_memory_1
, _("\
5086 Set permission to write into target memory."), _("\
5087 Show permission to write into target memory."), _("\
5088 When this permission is on, GDB may write into the target's memory.\n\
5089 Otherwise, any sort of write attempt will result in an error."),
5090 set_write_memory_permission
, NULL
,
5091 &setlist
, &showlist
);
5093 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5094 &may_insert_breakpoints_1
, _("\
5095 Set permission to insert breakpoints in the target."), _("\
5096 Show permission to insert breakpoints in the target."), _("\
5097 When this permission is on, GDB may insert breakpoints in the program.\n\
5098 Otherwise, any sort of insertion attempt will result in an error."),
5099 set_target_permissions
, NULL
,
5100 &setlist
, &showlist
);
5102 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5103 &may_insert_tracepoints_1
, _("\
5104 Set permission to insert tracepoints in the target."), _("\
5105 Show permission to insert tracepoints in the target."), _("\
5106 When this permission is on, GDB may insert tracepoints in the program.\n\
5107 Otherwise, any sort of insertion attempt will result in an error."),
5108 set_target_permissions
, NULL
,
5109 &setlist
, &showlist
);
5111 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5112 &may_insert_fast_tracepoints_1
, _("\
5113 Set permission to insert fast tracepoints in the target."), _("\
5114 Show permission to insert fast tracepoints in the target."), _("\
5115 When this permission is on, GDB may insert fast tracepoints.\n\
5116 Otherwise, any sort of insertion attempt will result in an error."),
5117 set_target_permissions
, NULL
,
5118 &setlist
, &showlist
);
5120 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5122 Set permission to interrupt or signal the target."), _("\
5123 Show permission to interrupt or signal the target."), _("\
5124 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5125 Otherwise, any attempt to interrupt or stop will be ignored."),
5126 set_target_permissions
, NULL
,
5127 &setlist
, &showlist
);