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 /* Do not inherit to_enable_tracepoint. */
696 /* Do not inherit to_disable_tracepoint. */
697 /* Do not inherit to_trace_set_readonly_regions. */
698 /* Do not inherit to_trace_start. */
699 /* Do not inherit to_get_trace_status. */
700 /* Do not inherit to_get_tracepoint_status. */
701 /* Do not inherit to_trace_stop. */
702 /* Do not inherit to_trace_find. */
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_get_trace_state_variable_value
,
756 (int (*) (struct target_ops
*, int, LONGEST
*))
758 de_fault (to_save_trace_data
,
759 (int (*) (struct target_ops
*, const char *))
761 de_fault (to_upload_tracepoints
,
762 (int (*) (struct target_ops
*, struct uploaded_tp
**))
764 de_fault (to_upload_trace_state_variables
,
765 (int (*) (struct target_ops
*, struct uploaded_tsv
**))
767 de_fault (to_get_raw_trace_data
,
768 (LONGEST (*) (struct target_ops
*, gdb_byte
*, ULONGEST
, LONGEST
))
770 de_fault (to_get_min_fast_tracepoint_insn_len
,
771 (int (*) (struct target_ops
*))
773 de_fault (to_set_disconnected_tracing
,
774 (void (*) (struct target_ops
*, int))
776 de_fault (to_set_circular_trace_buffer
,
777 (void (*) (struct target_ops
*, int))
779 de_fault (to_set_trace_buffer_size
,
780 (void (*) (struct target_ops
*, LONGEST
))
782 de_fault (to_set_trace_notes
,
783 (int (*) (struct target_ops
*,
784 const char *, const char *, const char *))
786 de_fault (to_get_tib_address
,
787 (int (*) (struct target_ops
*, ptid_t
, CORE_ADDR
*))
789 de_fault (to_set_permissions
,
790 (void (*) (struct target_ops
*))
792 de_fault (to_static_tracepoint_marker_at
,
793 (int (*) (struct target_ops
*,
794 CORE_ADDR
, struct static_tracepoint_marker
*))
796 de_fault (to_static_tracepoint_markers_by_strid
,
797 (VEC(static_tracepoint_marker_p
) * (*) (struct target_ops
*,
800 de_fault (to_traceframe_info
,
801 (struct traceframe_info
* (*) (struct target_ops
*))
803 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
804 (int (*) (struct target_ops
*))
806 de_fault (to_can_run_breakpoint_commands
,
807 (int (*) (struct target_ops
*))
809 de_fault (to_use_agent
,
810 (int (*) (struct target_ops
*, int))
812 de_fault (to_can_use_agent
,
813 (int (*) (struct target_ops
*))
815 de_fault (to_augmented_libraries_svr4_read
,
816 (int (*) (struct target_ops
*))
821 /* Finally, position the target-stack beneath the squashed
822 "current_target". That way code looking for a non-inherited
823 target method can quickly and simply find it. */
824 current_target
.beneath
= target_stack
;
827 setup_target_debug ();
830 /* Push a new target type into the stack of the existing target accessors,
831 possibly superseding some of the existing accessors.
833 Rather than allow an empty stack, we always have the dummy target at
834 the bottom stratum, so we can call the function vectors without
838 push_target (struct target_ops
*t
)
840 struct target_ops
**cur
;
842 /* Check magic number. If wrong, it probably means someone changed
843 the struct definition, but not all the places that initialize one. */
844 if (t
->to_magic
!= OPS_MAGIC
)
846 fprintf_unfiltered (gdb_stderr
,
847 "Magic number of %s target struct wrong\n",
849 internal_error (__FILE__
, __LINE__
,
850 _("failed internal consistency check"));
853 /* Find the proper stratum to install this target in. */
854 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
856 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
860 /* If there's already targets at this stratum, remove them. */
861 /* FIXME: cagney/2003-10-15: I think this should be popping all
862 targets to CUR, and not just those at this stratum level. */
863 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
865 /* There's already something at this stratum level. Close it,
866 and un-hook it from the stack. */
867 struct target_ops
*tmp
= (*cur
);
869 (*cur
) = (*cur
)->beneath
;
874 /* We have removed all targets in our stratum, now add the new one. */
878 update_current_target ();
881 /* Remove a target_ops vector from the stack, wherever it may be.
882 Return how many times it was removed (0 or 1). */
885 unpush_target (struct target_ops
*t
)
887 struct target_ops
**cur
;
888 struct target_ops
*tmp
;
890 if (t
->to_stratum
== dummy_stratum
)
891 internal_error (__FILE__
, __LINE__
,
892 _("Attempt to unpush the dummy target"));
894 /* Look for the specified target. Note that we assume that a target
895 can only occur once in the target stack. */
897 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
903 /* If we don't find target_ops, quit. Only open targets should be
908 /* Unchain the target. */
910 (*cur
) = (*cur
)->beneath
;
913 update_current_target ();
915 /* Finally close the target. Note we do this after unchaining, so
916 any target method calls from within the target_close
917 implementation don't end up in T anymore. */
924 pop_all_targets_above (enum strata above_stratum
)
926 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
928 if (!unpush_target (target_stack
))
930 fprintf_unfiltered (gdb_stderr
,
931 "pop_all_targets couldn't find target %s\n",
932 target_stack
->to_shortname
);
933 internal_error (__FILE__
, __LINE__
,
934 _("failed internal consistency check"));
941 pop_all_targets (void)
943 pop_all_targets_above (dummy_stratum
);
946 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
949 target_is_pushed (struct target_ops
*t
)
951 struct target_ops
**cur
;
953 /* Check magic number. If wrong, it probably means someone changed
954 the struct definition, but not all the places that initialize one. */
955 if (t
->to_magic
!= OPS_MAGIC
)
957 fprintf_unfiltered (gdb_stderr
,
958 "Magic number of %s target struct wrong\n",
960 internal_error (__FILE__
, __LINE__
,
961 _("failed internal consistency check"));
964 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
971 /* Using the objfile specified in OBJFILE, find the address for the
972 current thread's thread-local storage with offset OFFSET. */
974 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
976 volatile CORE_ADDR addr
= 0;
977 struct target_ops
*target
;
979 for (target
= current_target
.beneath
;
981 target
= target
->beneath
)
983 if (target
->to_get_thread_local_address
!= NULL
)
988 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
990 ptid_t ptid
= inferior_ptid
;
991 volatile struct gdb_exception ex
;
993 TRY_CATCH (ex
, RETURN_MASK_ALL
)
997 /* Fetch the load module address for this objfile. */
998 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1000 /* If it's 0, throw the appropriate exception. */
1002 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1003 _("TLS load module not found"));
1005 addr
= target
->to_get_thread_local_address (target
, ptid
,
1008 /* If an error occurred, print TLS related messages here. Otherwise,
1009 throw the error to some higher catcher. */
1012 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1016 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1017 error (_("Cannot find thread-local variables "
1018 "in this thread library."));
1020 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1021 if (objfile_is_library
)
1022 error (_("Cannot find shared library `%s' in dynamic"
1023 " linker's load module list"), objfile_name (objfile
));
1025 error (_("Cannot find executable file `%s' in dynamic"
1026 " linker's load module list"), objfile_name (objfile
));
1028 case TLS_NOT_ALLOCATED_YET_ERROR
:
1029 if (objfile_is_library
)
1030 error (_("The inferior has not yet allocated storage for"
1031 " thread-local variables in\n"
1032 "the shared library `%s'\n"
1034 objfile_name (objfile
), target_pid_to_str (ptid
));
1036 error (_("The inferior has not yet allocated storage for"
1037 " thread-local variables in\n"
1038 "the executable `%s'\n"
1040 objfile_name (objfile
), target_pid_to_str (ptid
));
1042 case TLS_GENERIC_ERROR
:
1043 if (objfile_is_library
)
1044 error (_("Cannot find thread-local storage for %s, "
1045 "shared library %s:\n%s"),
1046 target_pid_to_str (ptid
),
1047 objfile_name (objfile
), ex
.message
);
1049 error (_("Cannot find thread-local storage for %s, "
1050 "executable file %s:\n%s"),
1051 target_pid_to_str (ptid
),
1052 objfile_name (objfile
), ex
.message
);
1055 throw_exception (ex
);
1060 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1061 TLS is an ABI-specific thing. But we don't do that yet. */
1063 error (_("Cannot find thread-local variables on this target"));
1069 target_xfer_status_to_string (enum target_xfer_status err
)
1071 #define CASE(X) case X: return #X
1074 CASE(TARGET_XFER_E_IO
);
1075 CASE(TARGET_XFER_E_UNAVAILABLE
);
1084 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1086 /* target_read_string -- read a null terminated string, up to LEN bytes,
1087 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1088 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1089 is responsible for freeing it. Return the number of bytes successfully
1093 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1095 int tlen
, offset
, i
;
1099 int buffer_allocated
;
1101 unsigned int nbytes_read
= 0;
1103 gdb_assert (string
);
1105 /* Small for testing. */
1106 buffer_allocated
= 4;
1107 buffer
= xmalloc (buffer_allocated
);
1112 tlen
= MIN (len
, 4 - (memaddr
& 3));
1113 offset
= memaddr
& 3;
1115 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1118 /* The transfer request might have crossed the boundary to an
1119 unallocated region of memory. Retry the transfer, requesting
1123 errcode
= target_read_memory (memaddr
, buf
, 1);
1128 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1132 bytes
= bufptr
- buffer
;
1133 buffer_allocated
*= 2;
1134 buffer
= xrealloc (buffer
, buffer_allocated
);
1135 bufptr
= buffer
+ bytes
;
1138 for (i
= 0; i
< tlen
; i
++)
1140 *bufptr
++ = buf
[i
+ offset
];
1141 if (buf
[i
+ offset
] == '\000')
1143 nbytes_read
+= i
+ 1;
1150 nbytes_read
+= tlen
;
1159 struct target_section_table
*
1160 target_get_section_table (struct target_ops
*target
)
1162 struct target_ops
*t
;
1165 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1167 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1168 if (t
->to_get_section_table
!= NULL
)
1169 return (*t
->to_get_section_table
) (t
);
1174 /* Find a section containing ADDR. */
1176 struct target_section
*
1177 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1179 struct target_section_table
*table
= target_get_section_table (target
);
1180 struct target_section
*secp
;
1185 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1187 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1193 /* Read memory from the live target, even if currently inspecting a
1194 traceframe. The return is the same as that of target_read. */
1196 static enum target_xfer_status
1197 target_read_live_memory (enum target_object object
,
1198 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1199 ULONGEST
*xfered_len
)
1201 enum target_xfer_status ret
;
1202 struct cleanup
*cleanup
;
1204 /* Switch momentarily out of tfind mode so to access live memory.
1205 Note that this must not clear global state, such as the frame
1206 cache, which must still remain valid for the previous traceframe.
1207 We may be _building_ the frame cache at this point. */
1208 cleanup
= make_cleanup_restore_traceframe_number ();
1209 set_traceframe_number (-1);
1211 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1212 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1214 do_cleanups (cleanup
);
1218 /* Using the set of read-only target sections of OPS, read live
1219 read-only memory. Note that the actual reads start from the
1220 top-most target again.
1222 For interface/parameters/return description see target.h,
1225 static enum target_xfer_status
1226 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1227 enum target_object object
,
1228 gdb_byte
*readbuf
, ULONGEST memaddr
,
1229 ULONGEST len
, ULONGEST
*xfered_len
)
1231 struct target_section
*secp
;
1232 struct target_section_table
*table
;
1234 secp
= target_section_by_addr (ops
, memaddr
);
1236 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1237 secp
->the_bfd_section
)
1240 struct target_section
*p
;
1241 ULONGEST memend
= memaddr
+ len
;
1243 table
= target_get_section_table (ops
);
1245 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1247 if (memaddr
>= p
->addr
)
1249 if (memend
<= p
->endaddr
)
1251 /* Entire transfer is within this section. */
1252 return target_read_live_memory (object
, memaddr
,
1253 readbuf
, len
, xfered_len
);
1255 else if (memaddr
>= p
->endaddr
)
1257 /* This section ends before the transfer starts. */
1262 /* This section overlaps the transfer. Just do half. */
1263 len
= p
->endaddr
- memaddr
;
1264 return target_read_live_memory (object
, memaddr
,
1265 readbuf
, len
, xfered_len
);
1271 return TARGET_XFER_EOF
;
1274 /* Read memory from more than one valid target. A core file, for
1275 instance, could have some of memory but delegate other bits to
1276 the target below it. So, we must manually try all targets. */
1278 static enum target_xfer_status
1279 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1280 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1281 ULONGEST
*xfered_len
)
1283 enum target_xfer_status res
;
1287 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1288 readbuf
, writebuf
, memaddr
, len
,
1290 if (res
== TARGET_XFER_OK
)
1293 /* Stop if the target reports that the memory is not available. */
1294 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1297 /* We want to continue past core files to executables, but not
1298 past a running target's memory. */
1299 if (ops
->to_has_all_memory (ops
))
1304 while (ops
!= NULL
);
1309 /* Perform a partial memory transfer.
1310 For docs see target.h, to_xfer_partial. */
1312 static enum target_xfer_status
1313 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1314 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1315 ULONGEST len
, ULONGEST
*xfered_len
)
1317 enum target_xfer_status res
;
1319 struct mem_region
*region
;
1320 struct inferior
*inf
;
1322 /* For accesses to unmapped overlay sections, read directly from
1323 files. Must do this first, as MEMADDR may need adjustment. */
1324 if (readbuf
!= NULL
&& overlay_debugging
)
1326 struct obj_section
*section
= find_pc_overlay (memaddr
);
1328 if (pc_in_unmapped_range (memaddr
, section
))
1330 struct target_section_table
*table
1331 = target_get_section_table (ops
);
1332 const char *section_name
= section
->the_bfd_section
->name
;
1334 memaddr
= overlay_mapped_address (memaddr
, section
);
1335 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1336 memaddr
, len
, xfered_len
,
1338 table
->sections_end
,
1343 /* Try the executable files, if "trust-readonly-sections" is set. */
1344 if (readbuf
!= NULL
&& trust_readonly
)
1346 struct target_section
*secp
;
1347 struct target_section_table
*table
;
1349 secp
= target_section_by_addr (ops
, memaddr
);
1351 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1352 secp
->the_bfd_section
)
1355 table
= target_get_section_table (ops
);
1356 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1357 memaddr
, len
, xfered_len
,
1359 table
->sections_end
,
1364 /* If reading unavailable memory in the context of traceframes, and
1365 this address falls within a read-only section, fallback to
1366 reading from live memory. */
1367 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1369 VEC(mem_range_s
) *available
;
1371 /* If we fail to get the set of available memory, then the
1372 target does not support querying traceframe info, and so we
1373 attempt reading from the traceframe anyway (assuming the
1374 target implements the old QTro packet then). */
1375 if (traceframe_available_memory (&available
, memaddr
, len
))
1377 struct cleanup
*old_chain
;
1379 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1381 if (VEC_empty (mem_range_s
, available
)
1382 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1384 /* Don't read into the traceframe's available
1386 if (!VEC_empty (mem_range_s
, available
))
1388 LONGEST oldlen
= len
;
1390 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1391 gdb_assert (len
<= oldlen
);
1394 do_cleanups (old_chain
);
1396 /* This goes through the topmost target again. */
1397 res
= memory_xfer_live_readonly_partial (ops
, object
,
1400 if (res
== TARGET_XFER_OK
)
1401 return TARGET_XFER_OK
;
1404 /* No use trying further, we know some memory starting
1405 at MEMADDR isn't available. */
1407 return TARGET_XFER_E_UNAVAILABLE
;
1411 /* Don't try to read more than how much is available, in
1412 case the target implements the deprecated QTro packet to
1413 cater for older GDBs (the target's knowledge of read-only
1414 sections may be outdated by now). */
1415 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1417 do_cleanups (old_chain
);
1421 /* Try GDB's internal data cache. */
1422 region
= lookup_mem_region (memaddr
);
1423 /* region->hi == 0 means there's no upper bound. */
1424 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1427 reg_len
= region
->hi
- memaddr
;
1429 switch (region
->attrib
.mode
)
1432 if (writebuf
!= NULL
)
1433 return TARGET_XFER_E_IO
;
1437 if (readbuf
!= NULL
)
1438 return TARGET_XFER_E_IO
;
1442 /* We only support writing to flash during "load" for now. */
1443 if (writebuf
!= NULL
)
1444 error (_("Writing to flash memory forbidden in this context"));
1448 return TARGET_XFER_E_IO
;
1451 if (!ptid_equal (inferior_ptid
, null_ptid
))
1452 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1457 /* The dcache reads whole cache lines; that doesn't play well
1458 with reading from a trace buffer, because reading outside of
1459 the collected memory range fails. */
1460 && get_traceframe_number () == -1
1461 && (region
->attrib
.cache
1462 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1463 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1465 DCACHE
*dcache
= target_dcache_get_or_init ();
1468 if (readbuf
!= NULL
)
1469 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1471 /* FIXME drow/2006-08-09: If we're going to preserve const
1472 correctness dcache_xfer_memory should take readbuf and
1474 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1477 return TARGET_XFER_E_IO
;
1480 *xfered_len
= (ULONGEST
) l
;
1481 return TARGET_XFER_OK
;
1485 /* If none of those methods found the memory we wanted, fall back
1486 to a target partial transfer. Normally a single call to
1487 to_xfer_partial is enough; if it doesn't recognize an object
1488 it will call the to_xfer_partial of the next target down.
1489 But for memory this won't do. Memory is the only target
1490 object which can be read from more than one valid target.
1491 A core file, for instance, could have some of memory but
1492 delegate other bits to the target below it. So, we must
1493 manually try all targets. */
1495 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1498 /* Make sure the cache gets updated no matter what - if we are writing
1499 to the stack. Even if this write is not tagged as such, we still need
1500 to update the cache. */
1502 if (res
== TARGET_XFER_OK
1505 && target_dcache_init_p ()
1506 && !region
->attrib
.cache
1507 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1508 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1510 DCACHE
*dcache
= target_dcache_get ();
1512 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1515 /* If we still haven't got anything, return the last error. We
1520 /* Perform a partial memory transfer. For docs see target.h,
1523 static enum target_xfer_status
1524 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1525 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1526 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1528 enum target_xfer_status res
;
1530 /* Zero length requests are ok and require no work. */
1532 return TARGET_XFER_EOF
;
1534 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1535 breakpoint insns, thus hiding out from higher layers whether
1536 there are software breakpoints inserted in the code stream. */
1537 if (readbuf
!= NULL
)
1539 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1542 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1543 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1548 struct cleanup
*old_chain
;
1550 /* A large write request is likely to be partially satisfied
1551 by memory_xfer_partial_1. We will continually malloc
1552 and free a copy of the entire write request for breakpoint
1553 shadow handling even though we only end up writing a small
1554 subset of it. Cap writes to 4KB to mitigate this. */
1555 len
= min (4096, len
);
1557 buf
= xmalloc (len
);
1558 old_chain
= make_cleanup (xfree
, buf
);
1559 memcpy (buf
, writebuf
, len
);
1561 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1562 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1565 do_cleanups (old_chain
);
1572 restore_show_memory_breakpoints (void *arg
)
1574 show_memory_breakpoints
= (uintptr_t) arg
;
1578 make_show_memory_breakpoints_cleanup (int show
)
1580 int current
= show_memory_breakpoints
;
1582 show_memory_breakpoints
= show
;
1583 return make_cleanup (restore_show_memory_breakpoints
,
1584 (void *) (uintptr_t) current
);
1587 /* For docs see target.h, to_xfer_partial. */
1589 enum target_xfer_status
1590 target_xfer_partial (struct target_ops
*ops
,
1591 enum target_object object
, const char *annex
,
1592 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1593 ULONGEST offset
, ULONGEST len
,
1594 ULONGEST
*xfered_len
)
1596 enum target_xfer_status retval
;
1598 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1600 /* Transfer is done when LEN is zero. */
1602 return TARGET_XFER_EOF
;
1604 if (writebuf
&& !may_write_memory
)
1605 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1606 core_addr_to_string_nz (offset
), plongest (len
));
1610 /* If this is a memory transfer, let the memory-specific code
1611 have a look at it instead. Memory transfers are more
1613 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1614 || object
== TARGET_OBJECT_CODE_MEMORY
)
1615 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1616 writebuf
, offset
, len
, xfered_len
);
1617 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1619 /* Request the normal memory object from other layers. */
1620 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1624 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1625 writebuf
, offset
, len
, xfered_len
);
1629 const unsigned char *myaddr
= NULL
;
1631 fprintf_unfiltered (gdb_stdlog
,
1632 "%s:target_xfer_partial "
1633 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1636 (annex
? annex
: "(null)"),
1637 host_address_to_string (readbuf
),
1638 host_address_to_string (writebuf
),
1639 core_addr_to_string_nz (offset
),
1640 pulongest (len
), retval
,
1641 pulongest (*xfered_len
));
1647 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1651 fputs_unfiltered (", bytes =", gdb_stdlog
);
1652 for (i
= 0; i
< *xfered_len
; i
++)
1654 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1656 if (targetdebug
< 2 && i
> 0)
1658 fprintf_unfiltered (gdb_stdlog
, " ...");
1661 fprintf_unfiltered (gdb_stdlog
, "\n");
1664 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1668 fputc_unfiltered ('\n', gdb_stdlog
);
1671 /* Check implementations of to_xfer_partial update *XFERED_LEN
1672 properly. Do assertion after printing debug messages, so that we
1673 can find more clues on assertion failure from debugging messages. */
1674 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1675 gdb_assert (*xfered_len
> 0);
1680 /* Read LEN bytes of target memory at address MEMADDR, placing the
1681 results in GDB's memory at MYADDR. Returns either 0 for success or
1682 TARGET_XFER_E_IO if any error occurs.
1684 If an error occurs, no guarantee is made about the contents of the data at
1685 MYADDR. In particular, the caller should not depend upon partial reads
1686 filling the buffer with good data. There is no way for the caller to know
1687 how much good data might have been transfered anyway. Callers that can
1688 deal with partial reads should call target_read (which will retry until
1689 it makes no progress, and then return how much was transferred). */
1692 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1694 /* Dispatch to the topmost target, not the flattened current_target.
1695 Memory accesses check target->to_has_(all_)memory, and the
1696 flattened target doesn't inherit those. */
1697 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1698 myaddr
, memaddr
, len
) == len
)
1701 return TARGET_XFER_E_IO
;
1704 /* Like target_read_memory, but specify explicitly that this is a read
1705 from the target's raw memory. That is, this read bypasses the
1706 dcache, breakpoint shadowing, etc. */
1709 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1711 /* See comment in target_read_memory about why the request starts at
1712 current_target.beneath. */
1713 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1714 myaddr
, memaddr
, len
) == len
)
1717 return TARGET_XFER_E_IO
;
1720 /* Like target_read_memory, but specify explicitly that this is a read from
1721 the target's stack. This may trigger different cache behavior. */
1724 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1726 /* See comment in target_read_memory about why the request starts at
1727 current_target.beneath. */
1728 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1729 myaddr
, memaddr
, len
) == len
)
1732 return TARGET_XFER_E_IO
;
1735 /* Like target_read_memory, but specify explicitly that this is a read from
1736 the target's code. This may trigger different cache behavior. */
1739 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1741 /* See comment in target_read_memory about why the request starts at
1742 current_target.beneath. */
1743 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1744 myaddr
, memaddr
, len
) == len
)
1747 return TARGET_XFER_E_IO
;
1750 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1751 Returns either 0 for success or TARGET_XFER_E_IO if any
1752 error occurs. If an error occurs, no guarantee is made about how
1753 much data got written. Callers that can deal with partial writes
1754 should call target_write. */
1757 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1759 /* See comment in target_read_memory about why the request starts at
1760 current_target.beneath. */
1761 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1762 myaddr
, memaddr
, len
) == len
)
1765 return TARGET_XFER_E_IO
;
1768 /* Write LEN bytes from MYADDR to target raw memory at address
1769 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1770 if any error occurs. If an error occurs, no guarantee is made
1771 about how much data got written. Callers that can deal with
1772 partial writes should call target_write. */
1775 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1777 /* See comment in target_read_memory about why the request starts at
1778 current_target.beneath. */
1779 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1780 myaddr
, memaddr
, len
) == len
)
1783 return TARGET_XFER_E_IO
;
1786 /* Fetch the target's memory map. */
1789 target_memory_map (void)
1791 VEC(mem_region_s
) *result
;
1792 struct mem_region
*last_one
, *this_one
;
1794 struct target_ops
*t
;
1797 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1799 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1800 if (t
->to_memory_map
!= NULL
)
1806 result
= t
->to_memory_map (t
);
1810 qsort (VEC_address (mem_region_s
, result
),
1811 VEC_length (mem_region_s
, result
),
1812 sizeof (struct mem_region
), mem_region_cmp
);
1814 /* Check that regions do not overlap. Simultaneously assign
1815 a numbering for the "mem" commands to use to refer to
1818 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1820 this_one
->number
= ix
;
1822 if (last_one
&& last_one
->hi
> this_one
->lo
)
1824 warning (_("Overlapping regions in memory map: ignoring"));
1825 VEC_free (mem_region_s
, result
);
1828 last_one
= this_one
;
1835 target_flash_erase (ULONGEST address
, LONGEST length
)
1837 struct target_ops
*t
;
1839 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1840 if (t
->to_flash_erase
!= NULL
)
1843 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1844 hex_string (address
), phex (length
, 0));
1845 t
->to_flash_erase (t
, address
, length
);
1853 target_flash_done (void)
1855 struct target_ops
*t
;
1857 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1858 if (t
->to_flash_done
!= NULL
)
1861 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1862 t
->to_flash_done (t
);
1870 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1871 struct cmd_list_element
*c
, const char *value
)
1873 fprintf_filtered (file
,
1874 _("Mode for reading from readonly sections is %s.\n"),
1878 /* More generic transfers. */
1880 static enum target_xfer_status
1881 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1882 const char *annex
, gdb_byte
*readbuf
,
1883 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1884 ULONGEST
*xfered_len
)
1886 if (object
== TARGET_OBJECT_MEMORY
1887 && ops
->deprecated_xfer_memory
!= NULL
)
1888 /* If available, fall back to the target's
1889 "deprecated_xfer_memory" method. */
1894 if (writebuf
!= NULL
)
1896 void *buffer
= xmalloc (len
);
1897 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1899 memcpy (buffer
, writebuf
, len
);
1900 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1901 1/*write*/, NULL
, ops
);
1902 do_cleanups (cleanup
);
1904 if (readbuf
!= NULL
)
1905 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1906 0/*read*/, NULL
, ops
);
1909 *xfered_len
= (ULONGEST
) xfered
;
1910 return TARGET_XFER_E_IO
;
1912 else if (xfered
== 0 && errno
== 0)
1913 /* "deprecated_xfer_memory" uses 0, cross checked against
1914 ERRNO as one indication of an error. */
1915 return TARGET_XFER_EOF
;
1917 return TARGET_XFER_E_IO
;
1921 gdb_assert (ops
->beneath
!= NULL
);
1922 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1923 readbuf
, writebuf
, offset
, len
,
1928 /* Target vector read/write partial wrapper functions. */
1930 static enum target_xfer_status
1931 target_read_partial (struct target_ops
*ops
,
1932 enum target_object object
,
1933 const char *annex
, gdb_byte
*buf
,
1934 ULONGEST offset
, ULONGEST len
,
1935 ULONGEST
*xfered_len
)
1937 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
1941 static enum target_xfer_status
1942 target_write_partial (struct target_ops
*ops
,
1943 enum target_object object
,
1944 const char *annex
, const gdb_byte
*buf
,
1945 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
1947 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
1951 /* Wrappers to perform the full transfer. */
1953 /* For docs on target_read see target.h. */
1956 target_read (struct target_ops
*ops
,
1957 enum target_object object
,
1958 const char *annex
, gdb_byte
*buf
,
1959 ULONGEST offset
, LONGEST len
)
1963 while (xfered
< len
)
1965 ULONGEST xfered_len
;
1966 enum target_xfer_status status
;
1968 status
= target_read_partial (ops
, object
, annex
,
1969 (gdb_byte
*) buf
+ xfered
,
1970 offset
+ xfered
, len
- xfered
,
1973 /* Call an observer, notifying them of the xfer progress? */
1974 if (status
== TARGET_XFER_EOF
)
1976 else if (status
== TARGET_XFER_OK
)
1978 xfered
+= xfered_len
;
1988 /* Assuming that the entire [begin, end) range of memory cannot be
1989 read, try to read whatever subrange is possible to read.
1991 The function returns, in RESULT, either zero or one memory block.
1992 If there's a readable subrange at the beginning, it is completely
1993 read and returned. Any further readable subrange will not be read.
1994 Otherwise, if there's a readable subrange at the end, it will be
1995 completely read and returned. Any readable subranges before it
1996 (obviously, not starting at the beginning), will be ignored. In
1997 other cases -- either no readable subrange, or readable subrange(s)
1998 that is neither at the beginning, or end, nothing is returned.
2000 The purpose of this function is to handle a read across a boundary
2001 of accessible memory in a case when memory map is not available.
2002 The above restrictions are fine for this case, but will give
2003 incorrect results if the memory is 'patchy'. However, supporting
2004 'patchy' memory would require trying to read every single byte,
2005 and it seems unacceptable solution. Explicit memory map is
2006 recommended for this case -- and target_read_memory_robust will
2007 take care of reading multiple ranges then. */
2010 read_whatever_is_readable (struct target_ops
*ops
,
2011 ULONGEST begin
, ULONGEST end
,
2012 VEC(memory_read_result_s
) **result
)
2014 gdb_byte
*buf
= xmalloc (end
- begin
);
2015 ULONGEST current_begin
= begin
;
2016 ULONGEST current_end
= end
;
2018 memory_read_result_s r
;
2019 ULONGEST xfered_len
;
2021 /* If we previously failed to read 1 byte, nothing can be done here. */
2022 if (end
- begin
<= 1)
2028 /* Check that either first or the last byte is readable, and give up
2029 if not. This heuristic is meant to permit reading accessible memory
2030 at the boundary of accessible region. */
2031 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2032 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
2037 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2038 buf
+ (end
-begin
) - 1, end
- 1, 1,
2039 &xfered_len
) == TARGET_XFER_OK
)
2050 /* Loop invariant is that the [current_begin, current_end) was previously
2051 found to be not readable as a whole.
2053 Note loop condition -- if the range has 1 byte, we can't divide the range
2054 so there's no point trying further. */
2055 while (current_end
- current_begin
> 1)
2057 ULONGEST first_half_begin
, first_half_end
;
2058 ULONGEST second_half_begin
, second_half_end
;
2060 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2064 first_half_begin
= current_begin
;
2065 first_half_end
= middle
;
2066 second_half_begin
= middle
;
2067 second_half_end
= current_end
;
2071 first_half_begin
= middle
;
2072 first_half_end
= current_end
;
2073 second_half_begin
= current_begin
;
2074 second_half_end
= middle
;
2077 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2078 buf
+ (first_half_begin
- begin
),
2080 first_half_end
- first_half_begin
);
2082 if (xfer
== first_half_end
- first_half_begin
)
2084 /* This half reads up fine. So, the error must be in the
2086 current_begin
= second_half_begin
;
2087 current_end
= second_half_end
;
2091 /* This half is not readable. Because we've tried one byte, we
2092 know some part of this half if actually redable. Go to the next
2093 iteration to divide again and try to read.
2095 We don't handle the other half, because this function only tries
2096 to read a single readable subrange. */
2097 current_begin
= first_half_begin
;
2098 current_end
= first_half_end
;
2104 /* The [begin, current_begin) range has been read. */
2106 r
.end
= current_begin
;
2111 /* The [current_end, end) range has been read. */
2112 LONGEST rlen
= end
- current_end
;
2114 r
.data
= xmalloc (rlen
);
2115 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2116 r
.begin
= current_end
;
2120 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2124 free_memory_read_result_vector (void *x
)
2126 VEC(memory_read_result_s
) *v
= x
;
2127 memory_read_result_s
*current
;
2130 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2132 xfree (current
->data
);
2134 VEC_free (memory_read_result_s
, v
);
2137 VEC(memory_read_result_s
) *
2138 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2140 VEC(memory_read_result_s
) *result
= 0;
2143 while (xfered
< len
)
2145 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2148 /* If there is no explicit region, a fake one should be created. */
2149 gdb_assert (region
);
2151 if (region
->hi
== 0)
2152 rlen
= len
- xfered
;
2154 rlen
= region
->hi
- offset
;
2156 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2158 /* Cannot read this region. Note that we can end up here only
2159 if the region is explicitly marked inaccessible, or
2160 'inaccessible-by-default' is in effect. */
2165 LONGEST to_read
= min (len
- xfered
, rlen
);
2166 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2168 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2169 (gdb_byte
*) buffer
,
2170 offset
+ xfered
, to_read
);
2171 /* Call an observer, notifying them of the xfer progress? */
2174 /* Got an error reading full chunk. See if maybe we can read
2177 read_whatever_is_readable (ops
, offset
+ xfered
,
2178 offset
+ xfered
+ to_read
, &result
);
2183 struct memory_read_result r
;
2185 r
.begin
= offset
+ xfered
;
2186 r
.end
= r
.begin
+ xfer
;
2187 VEC_safe_push (memory_read_result_s
, result
, &r
);
2197 /* An alternative to target_write with progress callbacks. */
2200 target_write_with_progress (struct target_ops
*ops
,
2201 enum target_object object
,
2202 const char *annex
, const gdb_byte
*buf
,
2203 ULONGEST offset
, LONGEST len
,
2204 void (*progress
) (ULONGEST
, void *), void *baton
)
2208 /* Give the progress callback a chance to set up. */
2210 (*progress
) (0, baton
);
2212 while (xfered
< len
)
2214 ULONGEST xfered_len
;
2215 enum target_xfer_status status
;
2217 status
= target_write_partial (ops
, object
, annex
,
2218 (gdb_byte
*) buf
+ xfered
,
2219 offset
+ xfered
, len
- xfered
,
2222 if (status
== TARGET_XFER_EOF
)
2224 if (TARGET_XFER_STATUS_ERROR_P (status
))
2227 gdb_assert (status
== TARGET_XFER_OK
);
2229 (*progress
) (xfered_len
, baton
);
2231 xfered
+= xfered_len
;
2237 /* For docs on target_write see target.h. */
2240 target_write (struct target_ops
*ops
,
2241 enum target_object object
,
2242 const char *annex
, const gdb_byte
*buf
,
2243 ULONGEST offset
, LONGEST len
)
2245 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2249 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2250 the size of the transferred data. PADDING additional bytes are
2251 available in *BUF_P. This is a helper function for
2252 target_read_alloc; see the declaration of that function for more
2256 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2257 const char *annex
, gdb_byte
**buf_p
, int padding
)
2259 size_t buf_alloc
, buf_pos
;
2262 /* This function does not have a length parameter; it reads the
2263 entire OBJECT). Also, it doesn't support objects fetched partly
2264 from one target and partly from another (in a different stratum,
2265 e.g. a core file and an executable). Both reasons make it
2266 unsuitable for reading memory. */
2267 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2269 /* Start by reading up to 4K at a time. The target will throttle
2270 this number down if necessary. */
2272 buf
= xmalloc (buf_alloc
);
2276 ULONGEST xfered_len
;
2277 enum target_xfer_status status
;
2279 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2280 buf_pos
, buf_alloc
- buf_pos
- padding
,
2283 if (status
== TARGET_XFER_EOF
)
2285 /* Read all there was. */
2292 else if (status
!= TARGET_XFER_OK
)
2294 /* An error occurred. */
2296 return TARGET_XFER_E_IO
;
2299 buf_pos
+= xfered_len
;
2301 /* If the buffer is filling up, expand it. */
2302 if (buf_alloc
< buf_pos
* 2)
2305 buf
= xrealloc (buf
, buf_alloc
);
2312 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2313 the size of the transferred data. See the declaration in "target.h"
2314 function for more information about the return value. */
2317 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2318 const char *annex
, gdb_byte
**buf_p
)
2320 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2323 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2324 returned as a string, allocated using xmalloc. If an error occurs
2325 or the transfer is unsupported, NULL is returned. Empty objects
2326 are returned as allocated but empty strings. A warning is issued
2327 if the result contains any embedded NUL bytes. */
2330 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2335 LONGEST i
, transferred
;
2337 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2338 bufstr
= (char *) buffer
;
2340 if (transferred
< 0)
2343 if (transferred
== 0)
2344 return xstrdup ("");
2346 bufstr
[transferred
] = 0;
2348 /* Check for embedded NUL bytes; but allow trailing NULs. */
2349 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2352 warning (_("target object %d, annex %s, "
2353 "contained unexpected null characters"),
2354 (int) object
, annex
? annex
: "(none)");
2361 /* Memory transfer methods. */
2364 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2367 /* This method is used to read from an alternate, non-current
2368 target. This read must bypass the overlay support (as symbols
2369 don't match this target), and GDB's internal cache (wrong cache
2370 for this target). */
2371 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2373 memory_error (TARGET_XFER_E_IO
, addr
);
2377 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2378 int len
, enum bfd_endian byte_order
)
2380 gdb_byte buf
[sizeof (ULONGEST
)];
2382 gdb_assert (len
<= sizeof (buf
));
2383 get_target_memory (ops
, addr
, buf
, len
);
2384 return extract_unsigned_integer (buf
, len
, byte_order
);
2390 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2391 struct bp_target_info
*bp_tgt
)
2393 if (!may_insert_breakpoints
)
2395 warning (_("May not insert breakpoints"));
2399 return current_target
.to_insert_breakpoint (¤t_target
,
2406 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2407 struct bp_target_info
*bp_tgt
)
2409 /* This is kind of a weird case to handle, but the permission might
2410 have been changed after breakpoints were inserted - in which case
2411 we should just take the user literally and assume that any
2412 breakpoints should be left in place. */
2413 if (!may_insert_breakpoints
)
2415 warning (_("May not remove breakpoints"));
2419 return current_target
.to_remove_breakpoint (¤t_target
,
2424 target_info (char *args
, int from_tty
)
2426 struct target_ops
*t
;
2427 int has_all_mem
= 0;
2429 if (symfile_objfile
!= NULL
)
2430 printf_unfiltered (_("Symbols from \"%s\".\n"),
2431 objfile_name (symfile_objfile
));
2433 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2435 if (!(*t
->to_has_memory
) (t
))
2438 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2441 printf_unfiltered (_("\tWhile running this, "
2442 "GDB does not access memory from...\n"));
2443 printf_unfiltered ("%s:\n", t
->to_longname
);
2444 (t
->to_files_info
) (t
);
2445 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2449 /* This function is called before any new inferior is created, e.g.
2450 by running a program, attaching, or connecting to a target.
2451 It cleans up any state from previous invocations which might
2452 change between runs. This is a subset of what target_preopen
2453 resets (things which might change between targets). */
2456 target_pre_inferior (int from_tty
)
2458 /* Clear out solib state. Otherwise the solib state of the previous
2459 inferior might have survived and is entirely wrong for the new
2460 target. This has been observed on GNU/Linux using glibc 2.3. How
2472 Cannot access memory at address 0xdeadbeef
2475 /* In some OSs, the shared library list is the same/global/shared
2476 across inferiors. If code is shared between processes, so are
2477 memory regions and features. */
2478 if (!gdbarch_has_global_solist (target_gdbarch ()))
2480 no_shared_libraries (NULL
, from_tty
);
2482 invalidate_target_mem_regions ();
2484 target_clear_description ();
2487 agent_capability_invalidate ();
2490 /* Callback for iterate_over_inferiors. Gets rid of the given
2494 dispose_inferior (struct inferior
*inf
, void *args
)
2496 struct thread_info
*thread
;
2498 thread
= any_thread_of_process (inf
->pid
);
2501 switch_to_thread (thread
->ptid
);
2503 /* Core inferiors actually should be detached, not killed. */
2504 if (target_has_execution
)
2507 target_detach (NULL
, 0);
2513 /* This is to be called by the open routine before it does
2517 target_preopen (int from_tty
)
2521 if (have_inferiors ())
2524 || !have_live_inferiors ()
2525 || query (_("A program is being debugged already. Kill it? ")))
2526 iterate_over_inferiors (dispose_inferior
, NULL
);
2528 error (_("Program not killed."));
2531 /* Calling target_kill may remove the target from the stack. But if
2532 it doesn't (which seems like a win for UDI), remove it now. */
2533 /* Leave the exec target, though. The user may be switching from a
2534 live process to a core of the same program. */
2535 pop_all_targets_above (file_stratum
);
2537 target_pre_inferior (from_tty
);
2540 /* Detach a target after doing deferred register stores. */
2543 target_detach (const char *args
, int from_tty
)
2545 struct target_ops
* t
;
2547 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2548 /* Don't remove global breakpoints here. They're removed on
2549 disconnection from the target. */
2552 /* If we're in breakpoints-always-inserted mode, have to remove
2553 them before detaching. */
2554 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2556 prepare_for_detach ();
2558 current_target
.to_detach (¤t_target
, args
, from_tty
);
2560 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2565 target_disconnect (char *args
, int from_tty
)
2567 struct target_ops
*t
;
2569 /* If we're in breakpoints-always-inserted mode or if breakpoints
2570 are global across processes, we have to remove them before
2572 remove_breakpoints ();
2574 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2575 if (t
->to_disconnect
!= NULL
)
2578 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2580 t
->to_disconnect (t
, args
, from_tty
);
2588 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2590 struct target_ops
*t
;
2591 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2596 char *status_string
;
2597 char *options_string
;
2599 status_string
= target_waitstatus_to_string (status
);
2600 options_string
= target_options_to_string (options
);
2601 fprintf_unfiltered (gdb_stdlog
,
2602 "target_wait (%d, status, options={%s})"
2604 ptid_get_pid (ptid
), options_string
,
2605 ptid_get_pid (retval
), status_string
);
2606 xfree (status_string
);
2607 xfree (options_string
);
2614 target_pid_to_str (ptid_t ptid
)
2616 struct target_ops
*t
;
2618 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2620 if (t
->to_pid_to_str
!= NULL
)
2621 return (*t
->to_pid_to_str
) (t
, ptid
);
2624 return normal_pid_to_str (ptid
);
2628 target_thread_name (struct thread_info
*info
)
2630 return current_target
.to_thread_name (¤t_target
, info
);
2634 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2636 struct target_ops
*t
;
2638 target_dcache_invalidate ();
2640 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2642 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2643 ptid_get_pid (ptid
),
2644 step
? "step" : "continue",
2645 gdb_signal_to_name (signal
));
2647 registers_changed_ptid (ptid
);
2648 set_executing (ptid
, 1);
2649 set_running (ptid
, 1);
2650 clear_inline_frame_state (ptid
);
2654 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2656 struct target_ops
*t
;
2658 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2660 if (t
->to_pass_signals
!= NULL
)
2666 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2669 for (i
= 0; i
< numsigs
; i
++)
2670 if (pass_signals
[i
])
2671 fprintf_unfiltered (gdb_stdlog
, " %s",
2672 gdb_signal_to_name (i
));
2674 fprintf_unfiltered (gdb_stdlog
, " })\n");
2677 (*t
->to_pass_signals
) (t
, numsigs
, pass_signals
);
2684 target_program_signals (int numsigs
, unsigned char *program_signals
)
2686 struct target_ops
*t
;
2688 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2690 if (t
->to_program_signals
!= NULL
)
2696 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2699 for (i
= 0; i
< numsigs
; i
++)
2700 if (program_signals
[i
])
2701 fprintf_unfiltered (gdb_stdlog
, " %s",
2702 gdb_signal_to_name (i
));
2704 fprintf_unfiltered (gdb_stdlog
, " })\n");
2707 (*t
->to_program_signals
) (t
, numsigs
, program_signals
);
2713 /* Look through the list of possible targets for a target that can
2717 target_follow_fork (int follow_child
, int detach_fork
)
2719 struct target_ops
*t
;
2721 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2723 if (t
->to_follow_fork
!= NULL
)
2725 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2728 fprintf_unfiltered (gdb_stdlog
,
2729 "target_follow_fork (%d, %d) = %d\n",
2730 follow_child
, detach_fork
, retval
);
2735 /* Some target returned a fork event, but did not know how to follow it. */
2736 internal_error (__FILE__
, __LINE__
,
2737 _("could not find a target to follow fork"));
2741 target_mourn_inferior (void)
2743 struct target_ops
*t
;
2745 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2747 if (t
->to_mourn_inferior
!= NULL
)
2749 t
->to_mourn_inferior (t
);
2751 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2753 /* We no longer need to keep handles on any of the object files.
2754 Make sure to release them to avoid unnecessarily locking any
2755 of them while we're not actually debugging. */
2756 bfd_cache_close_all ();
2762 internal_error (__FILE__
, __LINE__
,
2763 _("could not find a target to follow mourn inferior"));
2766 /* Look for a target which can describe architectural features, starting
2767 from TARGET. If we find one, return its description. */
2769 const struct target_desc
*
2770 target_read_description (struct target_ops
*target
)
2772 struct target_ops
*t
;
2774 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2775 if (t
->to_read_description
!= NULL
)
2777 const struct target_desc
*tdesc
;
2779 tdesc
= t
->to_read_description (t
);
2787 /* The default implementation of to_search_memory.
2788 This implements a basic search of memory, reading target memory and
2789 performing the search here (as opposed to performing the search in on the
2790 target side with, for example, gdbserver). */
2793 simple_search_memory (struct target_ops
*ops
,
2794 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2795 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2796 CORE_ADDR
*found_addrp
)
2798 /* NOTE: also defined in find.c testcase. */
2799 #define SEARCH_CHUNK_SIZE 16000
2800 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2801 /* Buffer to hold memory contents for searching. */
2802 gdb_byte
*search_buf
;
2803 unsigned search_buf_size
;
2804 struct cleanup
*old_cleanups
;
2806 search_buf_size
= chunk_size
+ pattern_len
- 1;
2808 /* No point in trying to allocate a buffer larger than the search space. */
2809 if (search_space_len
< search_buf_size
)
2810 search_buf_size
= search_space_len
;
2812 search_buf
= malloc (search_buf_size
);
2813 if (search_buf
== NULL
)
2814 error (_("Unable to allocate memory to perform the search."));
2815 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2817 /* Prime the search buffer. */
2819 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2820 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2822 warning (_("Unable to access %s bytes of target "
2823 "memory at %s, halting search."),
2824 pulongest (search_buf_size
), hex_string (start_addr
));
2825 do_cleanups (old_cleanups
);
2829 /* Perform the search.
2831 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2832 When we've scanned N bytes we copy the trailing bytes to the start and
2833 read in another N bytes. */
2835 while (search_space_len
>= pattern_len
)
2837 gdb_byte
*found_ptr
;
2838 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2840 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2841 pattern
, pattern_len
);
2843 if (found_ptr
!= NULL
)
2845 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2847 *found_addrp
= found_addr
;
2848 do_cleanups (old_cleanups
);
2852 /* Not found in this chunk, skip to next chunk. */
2854 /* Don't let search_space_len wrap here, it's unsigned. */
2855 if (search_space_len
>= chunk_size
)
2856 search_space_len
-= chunk_size
;
2858 search_space_len
= 0;
2860 if (search_space_len
>= pattern_len
)
2862 unsigned keep_len
= search_buf_size
- chunk_size
;
2863 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2866 /* Copy the trailing part of the previous iteration to the front
2867 of the buffer for the next iteration. */
2868 gdb_assert (keep_len
== pattern_len
- 1);
2869 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2871 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2873 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2874 search_buf
+ keep_len
, read_addr
,
2875 nr_to_read
) != nr_to_read
)
2877 warning (_("Unable to access %s bytes of target "
2878 "memory at %s, halting search."),
2879 plongest (nr_to_read
),
2880 hex_string (read_addr
));
2881 do_cleanups (old_cleanups
);
2885 start_addr
+= chunk_size
;
2891 do_cleanups (old_cleanups
);
2895 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2896 sequence of bytes in PATTERN with length PATTERN_LEN.
2898 The result is 1 if found, 0 if not found, and -1 if there was an error
2899 requiring halting of the search (e.g. memory read error).
2900 If the pattern is found the address is recorded in FOUND_ADDRP. */
2903 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2904 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2905 CORE_ADDR
*found_addrp
)
2907 struct target_ops
*t
;
2910 /* We don't use INHERIT to set current_target.to_search_memory,
2911 so we have to scan the target stack and handle targetdebug
2915 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2916 hex_string (start_addr
));
2918 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2919 if (t
->to_search_memory
!= NULL
)
2924 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2925 pattern
, pattern_len
, found_addrp
);
2929 /* If a special version of to_search_memory isn't available, use the
2931 found
= simple_search_memory (current_target
.beneath
,
2932 start_addr
, search_space_len
,
2933 pattern
, pattern_len
, found_addrp
);
2937 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2942 /* Look through the currently pushed targets. If none of them will
2943 be able to restart the currently running process, issue an error
2947 target_require_runnable (void)
2949 struct target_ops
*t
;
2951 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2953 /* If this target knows how to create a new program, then
2954 assume we will still be able to after killing the current
2955 one. Either killing and mourning will not pop T, or else
2956 find_default_run_target will find it again. */
2957 if (t
->to_create_inferior
!= NULL
)
2960 /* Do not worry about thread_stratum targets that can not
2961 create inferiors. Assume they will be pushed again if
2962 necessary, and continue to the process_stratum. */
2963 if (t
->to_stratum
== thread_stratum
2964 || t
->to_stratum
== arch_stratum
)
2967 error (_("The \"%s\" target does not support \"run\". "
2968 "Try \"help target\" or \"continue\"."),
2972 /* This function is only called if the target is running. In that
2973 case there should have been a process_stratum target and it
2974 should either know how to create inferiors, or not... */
2975 internal_error (__FILE__
, __LINE__
, _("No targets found"));
2978 /* Look through the list of possible targets for a target that can
2979 execute a run or attach command without any other data. This is
2980 used to locate the default process stratum.
2982 If DO_MESG is not NULL, the result is always valid (error() is
2983 called for errors); else, return NULL on error. */
2985 static struct target_ops
*
2986 find_default_run_target (char *do_mesg
)
2988 struct target_ops
**t
;
2989 struct target_ops
*runable
= NULL
;
2994 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2997 if ((*t
)->to_can_run
&& target_can_run (*t
))
3007 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3016 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3018 struct target_ops
*t
;
3020 t
= find_default_run_target ("attach");
3021 (t
->to_attach
) (t
, args
, from_tty
);
3026 find_default_create_inferior (struct target_ops
*ops
,
3027 char *exec_file
, char *allargs
, char **env
,
3030 struct target_ops
*t
;
3032 t
= find_default_run_target ("run");
3033 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3038 find_default_can_async_p (struct target_ops
*ignore
)
3040 struct target_ops
*t
;
3042 /* This may be called before the target is pushed on the stack;
3043 look for the default process stratum. If there's none, gdb isn't
3044 configured with a native debugger, and target remote isn't
3046 t
= find_default_run_target (NULL
);
3047 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
3048 return (t
->to_can_async_p
) (t
);
3053 find_default_is_async_p (struct target_ops
*ignore
)
3055 struct target_ops
*t
;
3057 /* This may be called before the target is pushed on the stack;
3058 look for the default process stratum. If there's none, gdb isn't
3059 configured with a native debugger, and target remote isn't
3061 t
= find_default_run_target (NULL
);
3062 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
3063 return (t
->to_is_async_p
) (t
);
3068 find_default_supports_non_stop (struct target_ops
*self
)
3070 struct target_ops
*t
;
3072 t
= find_default_run_target (NULL
);
3073 if (t
&& t
->to_supports_non_stop
)
3074 return (t
->to_supports_non_stop
) (t
);
3079 target_supports_non_stop (void)
3081 struct target_ops
*t
;
3083 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3084 if (t
->to_supports_non_stop
)
3085 return t
->to_supports_non_stop (t
);
3090 /* Implement the "info proc" command. */
3093 target_info_proc (char *args
, enum info_proc_what what
)
3095 struct target_ops
*t
;
3097 /* If we're already connected to something that can get us OS
3098 related data, use it. Otherwise, try using the native
3100 if (current_target
.to_stratum
>= process_stratum
)
3101 t
= current_target
.beneath
;
3103 t
= find_default_run_target (NULL
);
3105 for (; t
!= NULL
; t
= t
->beneath
)
3107 if (t
->to_info_proc
!= NULL
)
3109 t
->to_info_proc (t
, args
, what
);
3112 fprintf_unfiltered (gdb_stdlog
,
3113 "target_info_proc (\"%s\", %d)\n", args
, what
);
3123 find_default_supports_disable_randomization (struct target_ops
*self
)
3125 struct target_ops
*t
;
3127 t
= find_default_run_target (NULL
);
3128 if (t
&& t
->to_supports_disable_randomization
)
3129 return (t
->to_supports_disable_randomization
) (t
);
3134 target_supports_disable_randomization (void)
3136 struct target_ops
*t
;
3138 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3139 if (t
->to_supports_disable_randomization
)
3140 return t
->to_supports_disable_randomization (t
);
3146 target_get_osdata (const char *type
)
3148 struct target_ops
*t
;
3150 /* If we're already connected to something that can get us OS
3151 related data, use it. Otherwise, try using the native
3153 if (current_target
.to_stratum
>= process_stratum
)
3154 t
= current_target
.beneath
;
3156 t
= find_default_run_target ("get OS data");
3161 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3164 /* Determine the current address space of thread PTID. */
3166 struct address_space
*
3167 target_thread_address_space (ptid_t ptid
)
3169 struct address_space
*aspace
;
3170 struct inferior
*inf
;
3171 struct target_ops
*t
;
3173 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3175 if (t
->to_thread_address_space
!= NULL
)
3177 aspace
= t
->to_thread_address_space (t
, ptid
);
3178 gdb_assert (aspace
);
3181 fprintf_unfiltered (gdb_stdlog
,
3182 "target_thread_address_space (%s) = %d\n",
3183 target_pid_to_str (ptid
),
3184 address_space_num (aspace
));
3189 /* Fall-back to the "main" address space of the inferior. */
3190 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3192 if (inf
== NULL
|| inf
->aspace
== NULL
)
3193 internal_error (__FILE__
, __LINE__
,
3194 _("Can't determine the current "
3195 "address space of thread %s\n"),
3196 target_pid_to_str (ptid
));
3202 /* Target file operations. */
3204 static struct target_ops
*
3205 default_fileio_target (void)
3207 /* If we're already connected to something that can perform
3208 file I/O, use it. Otherwise, try using the native target. */
3209 if (current_target
.to_stratum
>= process_stratum
)
3210 return current_target
.beneath
;
3212 return find_default_run_target ("file I/O");
3215 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3216 target file descriptor, or -1 if an error occurs (and set
3219 target_fileio_open (const char *filename
, int flags
, int mode
,
3222 struct target_ops
*t
;
3224 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3226 if (t
->to_fileio_open
!= NULL
)
3228 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3231 fprintf_unfiltered (gdb_stdlog
,
3232 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3233 filename
, flags
, mode
,
3234 fd
, fd
!= -1 ? 0 : *target_errno
);
3239 *target_errno
= FILEIO_ENOSYS
;
3243 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3244 Return the number of bytes written, or -1 if an error occurs
3245 (and set *TARGET_ERRNO). */
3247 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3248 ULONGEST offset
, int *target_errno
)
3250 struct target_ops
*t
;
3252 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3254 if (t
->to_fileio_pwrite
!= NULL
)
3256 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3260 fprintf_unfiltered (gdb_stdlog
,
3261 "target_fileio_pwrite (%d,...,%d,%s) "
3263 fd
, len
, pulongest (offset
),
3264 ret
, ret
!= -1 ? 0 : *target_errno
);
3269 *target_errno
= FILEIO_ENOSYS
;
3273 /* Read up to LEN bytes FD on the target into READ_BUF.
3274 Return the number of bytes read, or -1 if an error occurs
3275 (and set *TARGET_ERRNO). */
3277 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3278 ULONGEST offset
, int *target_errno
)
3280 struct target_ops
*t
;
3282 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3284 if (t
->to_fileio_pread
!= NULL
)
3286 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3290 fprintf_unfiltered (gdb_stdlog
,
3291 "target_fileio_pread (%d,...,%d,%s) "
3293 fd
, len
, pulongest (offset
),
3294 ret
, ret
!= -1 ? 0 : *target_errno
);
3299 *target_errno
= FILEIO_ENOSYS
;
3303 /* Close FD on the target. Return 0, or -1 if an error occurs
3304 (and set *TARGET_ERRNO). */
3306 target_fileio_close (int fd
, int *target_errno
)
3308 struct target_ops
*t
;
3310 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3312 if (t
->to_fileio_close
!= NULL
)
3314 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3317 fprintf_unfiltered (gdb_stdlog
,
3318 "target_fileio_close (%d) = %d (%d)\n",
3319 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3324 *target_errno
= FILEIO_ENOSYS
;
3328 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3329 occurs (and set *TARGET_ERRNO). */
3331 target_fileio_unlink (const char *filename
, int *target_errno
)
3333 struct target_ops
*t
;
3335 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3337 if (t
->to_fileio_unlink
!= NULL
)
3339 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3342 fprintf_unfiltered (gdb_stdlog
,
3343 "target_fileio_unlink (%s) = %d (%d)\n",
3344 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3349 *target_errno
= FILEIO_ENOSYS
;
3353 /* Read value of symbolic link FILENAME on the target. Return a
3354 null-terminated string allocated via xmalloc, or NULL if an error
3355 occurs (and set *TARGET_ERRNO). */
3357 target_fileio_readlink (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_readlink
!= NULL
)
3365 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3368 fprintf_unfiltered (gdb_stdlog
,
3369 "target_fileio_readlink (%s) = %s (%d)\n",
3370 filename
, ret
? ret
: "(nil)",
3371 ret
? 0 : *target_errno
);
3376 *target_errno
= FILEIO_ENOSYS
;
3381 target_fileio_close_cleanup (void *opaque
)
3383 int fd
= *(int *) opaque
;
3386 target_fileio_close (fd
, &target_errno
);
3389 /* Read target file FILENAME. Store the result in *BUF_P and
3390 return the size of the transferred data. PADDING additional bytes are
3391 available in *BUF_P. This is a helper function for
3392 target_fileio_read_alloc; see the declaration of that function for more
3396 target_fileio_read_alloc_1 (const char *filename
,
3397 gdb_byte
**buf_p
, int padding
)
3399 struct cleanup
*close_cleanup
;
3400 size_t buf_alloc
, buf_pos
;
3406 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3410 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3412 /* Start by reading up to 4K at a time. The target will throttle
3413 this number down if necessary. */
3415 buf
= xmalloc (buf_alloc
);
3419 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3420 buf_alloc
- buf_pos
- padding
, buf_pos
,
3424 /* An error occurred. */
3425 do_cleanups (close_cleanup
);
3431 /* Read all there was. */
3432 do_cleanups (close_cleanup
);
3442 /* If the buffer is filling up, expand it. */
3443 if (buf_alloc
< buf_pos
* 2)
3446 buf
= xrealloc (buf
, buf_alloc
);
3453 /* Read target file FILENAME. Store the result in *BUF_P and return
3454 the size of the transferred data. See the declaration in "target.h"
3455 function for more information about the return value. */
3458 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3460 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3463 /* Read target file FILENAME. The result is NUL-terminated and
3464 returned as a string, allocated using xmalloc. If an error occurs
3465 or the transfer is unsupported, NULL is returned. Empty objects
3466 are returned as allocated but empty strings. A warning is issued
3467 if the result contains any embedded NUL bytes. */
3470 target_fileio_read_stralloc (const char *filename
)
3474 LONGEST i
, transferred
;
3476 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3477 bufstr
= (char *) buffer
;
3479 if (transferred
< 0)
3482 if (transferred
== 0)
3483 return xstrdup ("");
3485 bufstr
[transferred
] = 0;
3487 /* Check for embedded NUL bytes; but allow trailing NULs. */
3488 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3491 warning (_("target file %s "
3492 "contained unexpected null characters"),
3502 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3503 CORE_ADDR addr
, int len
)
3505 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3509 default_watchpoint_addr_within_range (struct target_ops
*target
,
3511 CORE_ADDR start
, int length
)
3513 return addr
>= start
&& addr
< start
+ length
;
3516 static struct gdbarch
*
3517 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3519 return target_gdbarch ();
3529 return_minus_one (void)
3541 * Find the next target down the stack from the specified target.
3545 find_target_beneath (struct target_ops
*t
)
3553 find_target_at (enum strata stratum
)
3555 struct target_ops
*t
;
3557 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3558 if (t
->to_stratum
== stratum
)
3565 /* The inferior process has died. Long live the inferior! */
3568 generic_mourn_inferior (void)
3572 ptid
= inferior_ptid
;
3573 inferior_ptid
= null_ptid
;
3575 /* Mark breakpoints uninserted in case something tries to delete a
3576 breakpoint while we delete the inferior's threads (which would
3577 fail, since the inferior is long gone). */
3578 mark_breakpoints_out ();
3580 if (!ptid_equal (ptid
, null_ptid
))
3582 int pid
= ptid_get_pid (ptid
);
3583 exit_inferior (pid
);
3586 /* Note this wipes step-resume breakpoints, so needs to be done
3587 after exit_inferior, which ends up referencing the step-resume
3588 breakpoints through clear_thread_inferior_resources. */
3589 breakpoint_init_inferior (inf_exited
);
3591 registers_changed ();
3593 reopen_exec_file ();
3594 reinit_frame_cache ();
3596 if (deprecated_detach_hook
)
3597 deprecated_detach_hook ();
3600 /* Convert a normal process ID to a string. Returns the string in a
3604 normal_pid_to_str (ptid_t ptid
)
3606 static char buf
[32];
3608 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3613 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3615 return normal_pid_to_str (ptid
);
3618 /* Error-catcher for target_find_memory_regions. */
3620 dummy_find_memory_regions (struct target_ops
*self
,
3621 find_memory_region_ftype ignore1
, void *ignore2
)
3623 error (_("Command not implemented for this target."));
3627 /* Error-catcher for target_make_corefile_notes. */
3629 dummy_make_corefile_notes (struct target_ops
*self
,
3630 bfd
*ignore1
, int *ignore2
)
3632 error (_("Command not implemented for this target."));
3636 /* Set up the handful of non-empty slots needed by the dummy target
3640 init_dummy_target (void)
3642 dummy_target
.to_shortname
= "None";
3643 dummy_target
.to_longname
= "None";
3644 dummy_target
.to_doc
= "";
3645 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3646 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3647 dummy_target
.to_supports_disable_randomization
3648 = find_default_supports_disable_randomization
;
3649 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3650 dummy_target
.to_stratum
= dummy_stratum
;
3651 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3652 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3653 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3654 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3655 dummy_target
.to_has_execution
3656 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3657 dummy_target
.to_magic
= OPS_MAGIC
;
3659 install_dummy_methods (&dummy_target
);
3663 debug_to_open (char *args
, int from_tty
)
3665 debug_target
.to_open (args
, from_tty
);
3667 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3671 target_close (struct target_ops
*targ
)
3673 gdb_assert (!target_is_pushed (targ
));
3675 if (targ
->to_xclose
!= NULL
)
3676 targ
->to_xclose (targ
);
3677 else if (targ
->to_close
!= NULL
)
3678 targ
->to_close (targ
);
3681 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3685 target_attach (char *args
, int from_tty
)
3687 current_target
.to_attach (¤t_target
, args
, from_tty
);
3689 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3694 target_thread_alive (ptid_t ptid
)
3696 struct target_ops
*t
;
3698 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3700 if (t
->to_thread_alive
!= NULL
)
3704 retval
= t
->to_thread_alive (t
, ptid
);
3706 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3707 ptid_get_pid (ptid
), retval
);
3717 target_find_new_threads (void)
3719 struct target_ops
*t
;
3721 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3723 if (t
->to_find_new_threads
!= NULL
)
3725 t
->to_find_new_threads (t
);
3727 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3735 target_stop (ptid_t ptid
)
3739 warning (_("May not interrupt or stop the target, ignoring attempt"));
3743 (*current_target
.to_stop
) (¤t_target
, ptid
);
3747 debug_to_post_attach (struct target_ops
*self
, int pid
)
3749 debug_target
.to_post_attach (&debug_target
, pid
);
3751 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3754 /* Concatenate ELEM to LIST, a comma separate list, and return the
3755 result. The LIST incoming argument is released. */
3758 str_comma_list_concat_elem (char *list
, const char *elem
)
3761 return xstrdup (elem
);
3763 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3766 /* Helper for target_options_to_string. If OPT is present in
3767 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3768 Returns the new resulting string. OPT is removed from
3772 do_option (int *target_options
, char *ret
,
3773 int opt
, char *opt_str
)
3775 if ((*target_options
& opt
) != 0)
3777 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3778 *target_options
&= ~opt
;
3785 target_options_to_string (int target_options
)
3789 #define DO_TARG_OPTION(OPT) \
3790 ret = do_option (&target_options, ret, OPT, #OPT)
3792 DO_TARG_OPTION (TARGET_WNOHANG
);
3794 if (target_options
!= 0)
3795 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3803 debug_print_register (const char * func
,
3804 struct regcache
*regcache
, int regno
)
3806 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3808 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3809 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3810 && gdbarch_register_name (gdbarch
, regno
) != NULL
3811 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3812 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3813 gdbarch_register_name (gdbarch
, regno
));
3815 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3816 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3818 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3819 int i
, size
= register_size (gdbarch
, regno
);
3820 gdb_byte buf
[MAX_REGISTER_SIZE
];
3822 regcache_raw_collect (regcache
, regno
, buf
);
3823 fprintf_unfiltered (gdb_stdlog
, " = ");
3824 for (i
= 0; i
< size
; i
++)
3826 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3828 if (size
<= sizeof (LONGEST
))
3830 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3832 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3833 core_addr_to_string_nz (val
), plongest (val
));
3836 fprintf_unfiltered (gdb_stdlog
, "\n");
3840 target_fetch_registers (struct regcache
*regcache
, int regno
)
3842 struct target_ops
*t
;
3844 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3846 if (t
->to_fetch_registers
!= NULL
)
3848 t
->to_fetch_registers (t
, regcache
, regno
);
3850 debug_print_register ("target_fetch_registers", regcache
, regno
);
3857 target_store_registers (struct regcache
*regcache
, int regno
)
3859 struct target_ops
*t
;
3861 if (!may_write_registers
)
3862 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3864 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3867 debug_print_register ("target_store_registers", regcache
, regno
);
3872 target_core_of_thread (ptid_t ptid
)
3874 struct target_ops
*t
;
3876 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3878 if (t
->to_core_of_thread
!= NULL
)
3880 int retval
= t
->to_core_of_thread (t
, ptid
);
3883 fprintf_unfiltered (gdb_stdlog
,
3884 "target_core_of_thread (%d) = %d\n",
3885 ptid_get_pid (ptid
), retval
);
3894 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3896 struct target_ops
*t
;
3898 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3900 if (t
->to_verify_memory
!= NULL
)
3902 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3905 fprintf_unfiltered (gdb_stdlog
,
3906 "target_verify_memory (%s, %s) = %d\n",
3907 paddress (target_gdbarch (), memaddr
),
3917 /* The documentation for this function is in its prototype declaration in
3921 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3923 struct target_ops
*t
;
3925 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3926 if (t
->to_insert_mask_watchpoint
!= NULL
)
3930 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
3933 fprintf_unfiltered (gdb_stdlog
, "\
3934 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3935 core_addr_to_string (addr
),
3936 core_addr_to_string (mask
), rw
, ret
);
3944 /* The documentation for this function is in its prototype declaration in
3948 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3950 struct target_ops
*t
;
3952 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3953 if (t
->to_remove_mask_watchpoint
!= NULL
)
3957 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
3960 fprintf_unfiltered (gdb_stdlog
, "\
3961 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3962 core_addr_to_string (addr
),
3963 core_addr_to_string (mask
), rw
, ret
);
3971 /* The documentation for this function is in its prototype declaration
3975 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
3977 struct target_ops
*t
;
3979 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3980 if (t
->to_masked_watch_num_registers
!= NULL
)
3981 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
3986 /* The documentation for this function is in its prototype declaration
3990 target_ranged_break_num_registers (void)
3992 struct target_ops
*t
;
3994 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3995 if (t
->to_ranged_break_num_registers
!= NULL
)
3996 return t
->to_ranged_break_num_registers (t
);
4003 struct btrace_target_info
*
4004 target_enable_btrace (ptid_t ptid
)
4006 struct target_ops
*t
;
4008 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4009 if (t
->to_enable_btrace
!= NULL
)
4010 return t
->to_enable_btrace (t
, ptid
);
4019 target_disable_btrace (struct btrace_target_info
*btinfo
)
4021 struct target_ops
*t
;
4023 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4024 if (t
->to_disable_btrace
!= NULL
)
4026 t
->to_disable_btrace (t
, btinfo
);
4036 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4038 struct target_ops
*t
;
4040 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4041 if (t
->to_teardown_btrace
!= NULL
)
4043 t
->to_teardown_btrace (t
, btinfo
);
4053 target_read_btrace (VEC (btrace_block_s
) **btrace
,
4054 struct btrace_target_info
*btinfo
,
4055 enum btrace_read_type type
)
4057 struct target_ops
*t
;
4059 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4060 if (t
->to_read_btrace
!= NULL
)
4061 return t
->to_read_btrace (t
, btrace
, btinfo
, type
);
4064 return BTRACE_ERR_NOT_SUPPORTED
;
4070 target_stop_recording (void)
4072 struct target_ops
*t
;
4074 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4075 if (t
->to_stop_recording
!= NULL
)
4077 t
->to_stop_recording (t
);
4081 /* This is optional. */
4087 target_info_record (void)
4089 struct target_ops
*t
;
4091 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4092 if (t
->to_info_record
!= NULL
)
4094 t
->to_info_record (t
);
4104 target_save_record (const char *filename
)
4106 struct target_ops
*t
;
4108 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4109 if (t
->to_save_record
!= NULL
)
4111 t
->to_save_record (t
, filename
);
4121 target_supports_delete_record (void)
4123 struct target_ops
*t
;
4125 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4126 if (t
->to_delete_record
!= NULL
)
4135 target_delete_record (void)
4137 struct target_ops
*t
;
4139 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4140 if (t
->to_delete_record
!= NULL
)
4142 t
->to_delete_record (t
);
4152 target_record_is_replaying (void)
4154 struct target_ops
*t
;
4156 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4157 if (t
->to_record_is_replaying
!= NULL
)
4158 return t
->to_record_is_replaying (t
);
4166 target_goto_record_begin (void)
4168 struct target_ops
*t
;
4170 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4171 if (t
->to_goto_record_begin
!= NULL
)
4173 t
->to_goto_record_begin (t
);
4183 target_goto_record_end (void)
4185 struct target_ops
*t
;
4187 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4188 if (t
->to_goto_record_end
!= NULL
)
4190 t
->to_goto_record_end (t
);
4200 target_goto_record (ULONGEST insn
)
4202 struct target_ops
*t
;
4204 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4205 if (t
->to_goto_record
!= NULL
)
4207 t
->to_goto_record (t
, insn
);
4217 target_insn_history (int size
, int flags
)
4219 struct target_ops
*t
;
4221 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4222 if (t
->to_insn_history
!= NULL
)
4224 t
->to_insn_history (t
, size
, flags
);
4234 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4236 struct target_ops
*t
;
4238 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4239 if (t
->to_insn_history_from
!= NULL
)
4241 t
->to_insn_history_from (t
, from
, size
, flags
);
4251 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4253 struct target_ops
*t
;
4255 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4256 if (t
->to_insn_history_range
!= NULL
)
4258 t
->to_insn_history_range (t
, begin
, end
, flags
);
4268 target_call_history (int size
, int flags
)
4270 struct target_ops
*t
;
4272 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4273 if (t
->to_call_history
!= NULL
)
4275 t
->to_call_history (t
, size
, flags
);
4285 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4287 struct target_ops
*t
;
4289 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4290 if (t
->to_call_history_from
!= NULL
)
4292 t
->to_call_history_from (t
, begin
, size
, flags
);
4302 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4304 struct target_ops
*t
;
4306 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4307 if (t
->to_call_history_range
!= NULL
)
4309 t
->to_call_history_range (t
, begin
, end
, flags
);
4317 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
4319 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
4321 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4326 const struct frame_unwind
*
4327 target_get_unwinder (void)
4329 struct target_ops
*t
;
4331 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4332 if (t
->to_get_unwinder
!= NULL
)
4333 return t
->to_get_unwinder
;
4340 const struct frame_unwind
*
4341 target_get_tailcall_unwinder (void)
4343 struct target_ops
*t
;
4345 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4346 if (t
->to_get_tailcall_unwinder
!= NULL
)
4347 return t
->to_get_tailcall_unwinder
;
4355 forward_target_decr_pc_after_break (struct target_ops
*ops
,
4356 struct gdbarch
*gdbarch
)
4358 for (; ops
!= NULL
; ops
= ops
->beneath
)
4359 if (ops
->to_decr_pc_after_break
!= NULL
)
4360 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
4362 return gdbarch_decr_pc_after_break (gdbarch
);
4368 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
4370 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
4374 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4375 int write
, struct mem_attrib
*attrib
,
4376 struct target_ops
*target
)
4380 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4383 fprintf_unfiltered (gdb_stdlog
,
4384 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4385 paddress (target_gdbarch (), memaddr
), len
,
4386 write
? "write" : "read", retval
);
4392 fputs_unfiltered (", bytes =", gdb_stdlog
);
4393 for (i
= 0; i
< retval
; i
++)
4395 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4397 if (targetdebug
< 2 && i
> 0)
4399 fprintf_unfiltered (gdb_stdlog
, " ...");
4402 fprintf_unfiltered (gdb_stdlog
, "\n");
4405 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4409 fputc_unfiltered ('\n', gdb_stdlog
);
4415 debug_to_files_info (struct target_ops
*target
)
4417 debug_target
.to_files_info (target
);
4419 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4423 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4424 struct bp_target_info
*bp_tgt
)
4428 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4430 fprintf_unfiltered (gdb_stdlog
,
4431 "target_insert_breakpoint (%s, xxx) = %ld\n",
4432 core_addr_to_string (bp_tgt
->placed_address
),
4433 (unsigned long) retval
);
4438 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4439 struct bp_target_info
*bp_tgt
)
4443 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4445 fprintf_unfiltered (gdb_stdlog
,
4446 "target_remove_breakpoint (%s, xxx) = %ld\n",
4447 core_addr_to_string (bp_tgt
->placed_address
),
4448 (unsigned long) retval
);
4453 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4454 int type
, int cnt
, int from_tty
)
4458 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4459 type
, cnt
, from_tty
);
4461 fprintf_unfiltered (gdb_stdlog
,
4462 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4463 (unsigned long) type
,
4464 (unsigned long) cnt
,
4465 (unsigned long) from_tty
,
4466 (unsigned long) retval
);
4471 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4472 CORE_ADDR addr
, int len
)
4476 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4479 fprintf_unfiltered (gdb_stdlog
,
4480 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4481 core_addr_to_string (addr
), (unsigned long) len
,
4482 core_addr_to_string (retval
));
4487 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4488 CORE_ADDR addr
, int len
, int rw
,
4489 struct expression
*cond
)
4493 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4497 fprintf_unfiltered (gdb_stdlog
,
4498 "target_can_accel_watchpoint_condition "
4499 "(%s, %d, %d, %s) = %ld\n",
4500 core_addr_to_string (addr
), len
, rw
,
4501 host_address_to_string (cond
), (unsigned long) retval
);
4506 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4510 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4512 fprintf_unfiltered (gdb_stdlog
,
4513 "target_stopped_by_watchpoint () = %ld\n",
4514 (unsigned long) retval
);
4519 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4523 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4525 fprintf_unfiltered (gdb_stdlog
,
4526 "target_stopped_data_address ([%s]) = %ld\n",
4527 core_addr_to_string (*addr
),
4528 (unsigned long)retval
);
4533 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4535 CORE_ADDR start
, int length
)
4539 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4542 fprintf_filtered (gdb_stdlog
,
4543 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4544 core_addr_to_string (addr
), core_addr_to_string (start
),
4550 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4551 struct gdbarch
*gdbarch
,
4552 struct bp_target_info
*bp_tgt
)
4556 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4559 fprintf_unfiltered (gdb_stdlog
,
4560 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4561 core_addr_to_string (bp_tgt
->placed_address
),
4562 (unsigned long) retval
);
4567 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4568 struct gdbarch
*gdbarch
,
4569 struct bp_target_info
*bp_tgt
)
4573 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4576 fprintf_unfiltered (gdb_stdlog
,
4577 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4578 core_addr_to_string (bp_tgt
->placed_address
),
4579 (unsigned long) retval
);
4584 debug_to_insert_watchpoint (struct target_ops
*self
,
4585 CORE_ADDR addr
, int len
, int type
,
4586 struct expression
*cond
)
4590 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4591 addr
, len
, type
, cond
);
4593 fprintf_unfiltered (gdb_stdlog
,
4594 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4595 core_addr_to_string (addr
), len
, type
,
4596 host_address_to_string (cond
), (unsigned long) retval
);
4601 debug_to_remove_watchpoint (struct target_ops
*self
,
4602 CORE_ADDR addr
, int len
, int type
,
4603 struct expression
*cond
)
4607 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4608 addr
, len
, type
, cond
);
4610 fprintf_unfiltered (gdb_stdlog
,
4611 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4612 core_addr_to_string (addr
), len
, type
,
4613 host_address_to_string (cond
), (unsigned long) retval
);
4618 debug_to_terminal_init (struct target_ops
*self
)
4620 debug_target
.to_terminal_init (&debug_target
);
4622 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4626 debug_to_terminal_inferior (struct target_ops
*self
)
4628 debug_target
.to_terminal_inferior (&debug_target
);
4630 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4634 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4636 debug_target
.to_terminal_ours_for_output (&debug_target
);
4638 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4642 debug_to_terminal_ours (struct target_ops
*self
)
4644 debug_target
.to_terminal_ours (&debug_target
);
4646 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4650 debug_to_terminal_save_ours (struct target_ops
*self
)
4652 debug_target
.to_terminal_save_ours (&debug_target
);
4654 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4658 debug_to_terminal_info (struct target_ops
*self
,
4659 const char *arg
, int from_tty
)
4661 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4663 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4668 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4670 debug_target
.to_load (&debug_target
, args
, from_tty
);
4672 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4676 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4678 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4680 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4681 ptid_get_pid (ptid
));
4685 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4689 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4691 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4698 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4702 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4704 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4711 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4715 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4717 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4724 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4728 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4730 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4737 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4741 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4743 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4750 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4754 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4756 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4763 debug_to_has_exited (struct target_ops
*self
,
4764 int pid
, int wait_status
, int *exit_status
)
4768 has_exited
= debug_target
.to_has_exited (&debug_target
,
4769 pid
, wait_status
, exit_status
);
4771 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4772 pid
, wait_status
, *exit_status
, has_exited
);
4778 debug_to_can_run (struct target_ops
*self
)
4782 retval
= debug_target
.to_can_run (&debug_target
);
4784 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4789 static struct gdbarch
*
4790 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4792 struct gdbarch
*retval
;
4794 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4796 fprintf_unfiltered (gdb_stdlog
,
4797 "target_thread_architecture (%s) = %s [%s]\n",
4798 target_pid_to_str (ptid
),
4799 host_address_to_string (retval
),
4800 gdbarch_bfd_arch_info (retval
)->printable_name
);
4805 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4807 debug_target
.to_stop (&debug_target
, ptid
);
4809 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4810 target_pid_to_str (ptid
));
4814 debug_to_rcmd (struct target_ops
*self
, char *command
,
4815 struct ui_file
*outbuf
)
4817 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4818 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4822 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4826 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4828 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4835 setup_target_debug (void)
4837 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4839 current_target
.to_open
= debug_to_open
;
4840 current_target
.to_post_attach
= debug_to_post_attach
;
4841 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4842 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4843 current_target
.to_files_info
= debug_to_files_info
;
4844 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4845 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4846 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4847 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4848 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4849 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4850 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4851 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4852 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4853 current_target
.to_watchpoint_addr_within_range
4854 = debug_to_watchpoint_addr_within_range
;
4855 current_target
.to_region_ok_for_hw_watchpoint
4856 = debug_to_region_ok_for_hw_watchpoint
;
4857 current_target
.to_can_accel_watchpoint_condition
4858 = debug_to_can_accel_watchpoint_condition
;
4859 current_target
.to_terminal_init
= debug_to_terminal_init
;
4860 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4861 current_target
.to_terminal_ours_for_output
4862 = debug_to_terminal_ours_for_output
;
4863 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4864 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4865 current_target
.to_terminal_info
= debug_to_terminal_info
;
4866 current_target
.to_load
= debug_to_load
;
4867 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4868 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4869 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4870 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4871 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4872 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4873 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4874 current_target
.to_has_exited
= debug_to_has_exited
;
4875 current_target
.to_can_run
= debug_to_can_run
;
4876 current_target
.to_stop
= debug_to_stop
;
4877 current_target
.to_rcmd
= debug_to_rcmd
;
4878 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4879 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4883 static char targ_desc
[] =
4884 "Names of targets and files being debugged.\nShows the entire \
4885 stack of targets currently in use (including the exec-file,\n\
4886 core-file, and process, if any), as well as the symbol file name.";
4889 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4891 error (_("\"monitor\" command not supported by this target."));
4895 do_monitor_command (char *cmd
,
4898 target_rcmd (cmd
, gdb_stdtarg
);
4901 /* Print the name of each layers of our target stack. */
4904 maintenance_print_target_stack (char *cmd
, int from_tty
)
4906 struct target_ops
*t
;
4908 printf_filtered (_("The current target stack is:\n"));
4910 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4912 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4916 /* Controls if async mode is permitted. */
4917 int target_async_permitted
= 0;
4919 /* The set command writes to this variable. If the inferior is
4920 executing, target_async_permitted is *not* updated. */
4921 static int target_async_permitted_1
= 0;
4924 set_target_async_command (char *args
, int from_tty
,
4925 struct cmd_list_element
*c
)
4927 if (have_live_inferiors ())
4929 target_async_permitted_1
= target_async_permitted
;
4930 error (_("Cannot change this setting while the inferior is running."));
4933 target_async_permitted
= target_async_permitted_1
;
4937 show_target_async_command (struct ui_file
*file
, int from_tty
,
4938 struct cmd_list_element
*c
,
4941 fprintf_filtered (file
,
4942 _("Controlling the inferior in "
4943 "asynchronous mode is %s.\n"), value
);
4946 /* Temporary copies of permission settings. */
4948 static int may_write_registers_1
= 1;
4949 static int may_write_memory_1
= 1;
4950 static int may_insert_breakpoints_1
= 1;
4951 static int may_insert_tracepoints_1
= 1;
4952 static int may_insert_fast_tracepoints_1
= 1;
4953 static int may_stop_1
= 1;
4955 /* Make the user-set values match the real values again. */
4958 update_target_permissions (void)
4960 may_write_registers_1
= may_write_registers
;
4961 may_write_memory_1
= may_write_memory
;
4962 may_insert_breakpoints_1
= may_insert_breakpoints
;
4963 may_insert_tracepoints_1
= may_insert_tracepoints
;
4964 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4965 may_stop_1
= may_stop
;
4968 /* The one function handles (most of) the permission flags in the same
4972 set_target_permissions (char *args
, int from_tty
,
4973 struct cmd_list_element
*c
)
4975 if (target_has_execution
)
4977 update_target_permissions ();
4978 error (_("Cannot change this setting while the inferior is running."));
4981 /* Make the real values match the user-changed values. */
4982 may_write_registers
= may_write_registers_1
;
4983 may_insert_breakpoints
= may_insert_breakpoints_1
;
4984 may_insert_tracepoints
= may_insert_tracepoints_1
;
4985 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4986 may_stop
= may_stop_1
;
4987 update_observer_mode ();
4990 /* Set memory write permission independently of observer mode. */
4993 set_write_memory_permission (char *args
, int from_tty
,
4994 struct cmd_list_element
*c
)
4996 /* Make the real values match the user-changed values. */
4997 may_write_memory
= may_write_memory_1
;
4998 update_observer_mode ();
5003 initialize_targets (void)
5005 init_dummy_target ();
5006 push_target (&dummy_target
);
5008 add_info ("target", target_info
, targ_desc
);
5009 add_info ("files", target_info
, targ_desc
);
5011 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
5012 Set target debugging."), _("\
5013 Show target debugging."), _("\
5014 When non-zero, target debugging is enabled. Higher numbers are more\n\
5015 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
5019 &setdebuglist
, &showdebuglist
);
5021 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
5022 &trust_readonly
, _("\
5023 Set mode for reading from readonly sections."), _("\
5024 Show mode for reading from readonly sections."), _("\
5025 When this mode is on, memory reads from readonly sections (such as .text)\n\
5026 will be read from the object file instead of from the target. This will\n\
5027 result in significant performance improvement for remote targets."),
5029 show_trust_readonly
,
5030 &setlist
, &showlist
);
5032 add_com ("monitor", class_obscure
, do_monitor_command
,
5033 _("Send a command to the remote monitor (remote targets only)."));
5035 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5036 _("Print the name of each layer of the internal target stack."),
5037 &maintenanceprintlist
);
5039 add_setshow_boolean_cmd ("target-async", no_class
,
5040 &target_async_permitted_1
, _("\
5041 Set whether gdb controls the inferior in asynchronous mode."), _("\
5042 Show whether gdb controls the inferior in asynchronous mode."), _("\
5043 Tells gdb whether to control the inferior in asynchronous mode."),
5044 set_target_async_command
,
5045 show_target_async_command
,
5049 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5050 &may_write_registers_1
, _("\
5051 Set permission to write into registers."), _("\
5052 Show permission to write into registers."), _("\
5053 When this permission is on, GDB may write into the target's registers.\n\
5054 Otherwise, any sort of write attempt will result in an error."),
5055 set_target_permissions
, NULL
,
5056 &setlist
, &showlist
);
5058 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5059 &may_write_memory_1
, _("\
5060 Set permission to write into target memory."), _("\
5061 Show permission to write into target memory."), _("\
5062 When this permission is on, GDB may write into the target's memory.\n\
5063 Otherwise, any sort of write attempt will result in an error."),
5064 set_write_memory_permission
, NULL
,
5065 &setlist
, &showlist
);
5067 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5068 &may_insert_breakpoints_1
, _("\
5069 Set permission to insert breakpoints in the target."), _("\
5070 Show permission to insert breakpoints in the target."), _("\
5071 When this permission is on, GDB may insert breakpoints in the program.\n\
5072 Otherwise, any sort of insertion attempt will result in an error."),
5073 set_target_permissions
, NULL
,
5074 &setlist
, &showlist
);
5076 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5077 &may_insert_tracepoints_1
, _("\
5078 Set permission to insert tracepoints in the target."), _("\
5079 Show permission to insert tracepoints in the target."), _("\
5080 When this permission is on, GDB may insert tracepoints in the program.\n\
5081 Otherwise, any sort of insertion attempt will result in an error."),
5082 set_target_permissions
, NULL
,
5083 &setlist
, &showlist
);
5085 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5086 &may_insert_fast_tracepoints_1
, _("\
5087 Set permission to insert fast tracepoints in the target."), _("\
5088 Show permission to insert fast tracepoints in the target."), _("\
5089 When this permission is on, GDB may insert fast tracepoints.\n\
5090 Otherwise, any sort of insertion attempt will result in an error."),
5091 set_target_permissions
, NULL
,
5092 &setlist
, &showlist
);
5094 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5096 Set permission to interrupt or signal the target."), _("\
5097 Show permission to interrupt or signal the target."), _("\
5098 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5099 Otherwise, any attempt to interrupt or stop will be ignored."),
5100 set_target_permissions
, NULL
,
5101 &setlist
, &showlist
);