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 INHERIT (to_download_trace_state_variable
, t
);
695 INHERIT (to_enable_tracepoint
, t
);
696 INHERIT (to_disable_tracepoint
, t
);
697 INHERIT (to_trace_set_readonly_regions
, t
);
698 INHERIT (to_trace_start
, t
);
699 INHERIT (to_get_trace_status
, t
);
700 INHERIT (to_get_tracepoint_status
, t
);
701 INHERIT (to_trace_stop
, t
);
702 INHERIT (to_trace_find
, t
);
703 INHERIT (to_get_trace_state_variable_value
, t
);
704 INHERIT (to_save_trace_data
, t
);
705 INHERIT (to_upload_tracepoints
, t
);
706 INHERIT (to_upload_trace_state_variables
, t
);
707 INHERIT (to_get_raw_trace_data
, t
);
708 INHERIT (to_get_min_fast_tracepoint_insn_len
, t
);
709 INHERIT (to_set_disconnected_tracing
, t
);
710 INHERIT (to_set_circular_trace_buffer
, t
);
711 INHERIT (to_set_trace_buffer_size
, t
);
712 INHERIT (to_set_trace_notes
, t
);
713 INHERIT (to_get_tib_address
, t
);
714 INHERIT (to_set_permissions
, t
);
715 INHERIT (to_static_tracepoint_marker_at
, t
);
716 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
717 INHERIT (to_traceframe_info
, t
);
718 INHERIT (to_use_agent
, t
);
719 INHERIT (to_can_use_agent
, t
);
720 INHERIT (to_augmented_libraries_svr4_read
, t
);
721 INHERIT (to_magic
, t
);
722 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
723 INHERIT (to_can_run_breakpoint_commands
, t
);
724 /* Do not inherit to_memory_map. */
725 /* Do not inherit to_flash_erase. */
726 /* Do not inherit to_flash_done. */
730 /* Clean up a target struct so it no longer has any zero pointers in
731 it. Some entries are defaulted to a method that print an error,
732 others are hard-wired to a standard recursive default. */
734 #define de_fault(field, value) \
735 if (!current_target.field) \
736 current_target.field = value
739 (void (*) (char *, int))
742 (void (*) (struct target_ops
*))
744 de_fault (deprecated_xfer_memory
,
745 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
746 struct mem_attrib
*, struct target_ops
*))
748 de_fault (to_can_run
,
749 (int (*) (struct target_ops
*))
752 (void (*) (struct target_ops
*, ptid_t
))
754 current_target
.to_read_description
= NULL
;
755 de_fault (to_download_trace_state_variable
,
756 (void (*) (struct target_ops
*, struct trace_state_variable
*))
758 de_fault (to_enable_tracepoint
,
759 (void (*) (struct target_ops
*, struct bp_location
*))
761 de_fault (to_disable_tracepoint
,
762 (void (*) (struct target_ops
*, struct bp_location
*))
764 de_fault (to_trace_set_readonly_regions
,
765 (void (*) (struct target_ops
*))
767 de_fault (to_trace_start
,
768 (void (*) (struct target_ops
*))
770 de_fault (to_get_trace_status
,
771 (int (*) (struct target_ops
*, struct trace_status
*))
773 de_fault (to_get_tracepoint_status
,
774 (void (*) (struct target_ops
*, struct breakpoint
*,
775 struct uploaded_tp
*))
777 de_fault (to_trace_stop
,
778 (void (*) (struct target_ops
*))
780 de_fault (to_trace_find
,
781 (int (*) (struct target_ops
*,
782 enum trace_find_type
, int, CORE_ADDR
, CORE_ADDR
, int *))
784 de_fault (to_get_trace_state_variable_value
,
785 (int (*) (struct target_ops
*, int, LONGEST
*))
787 de_fault (to_save_trace_data
,
788 (int (*) (struct target_ops
*, const char *))
790 de_fault (to_upload_tracepoints
,
791 (int (*) (struct target_ops
*, struct uploaded_tp
**))
793 de_fault (to_upload_trace_state_variables
,
794 (int (*) (struct target_ops
*, struct uploaded_tsv
**))
796 de_fault (to_get_raw_trace_data
,
797 (LONGEST (*) (struct target_ops
*, gdb_byte
*, ULONGEST
, LONGEST
))
799 de_fault (to_get_min_fast_tracepoint_insn_len
,
800 (int (*) (struct target_ops
*))
802 de_fault (to_set_disconnected_tracing
,
803 (void (*) (struct target_ops
*, int))
805 de_fault (to_set_circular_trace_buffer
,
806 (void (*) (struct target_ops
*, int))
808 de_fault (to_set_trace_buffer_size
,
809 (void (*) (struct target_ops
*, LONGEST
))
811 de_fault (to_set_trace_notes
,
812 (int (*) (struct target_ops
*,
813 const char *, const char *, const char *))
815 de_fault (to_get_tib_address
,
816 (int (*) (struct target_ops
*, ptid_t
, CORE_ADDR
*))
818 de_fault (to_set_permissions
,
819 (void (*) (struct target_ops
*))
821 de_fault (to_static_tracepoint_marker_at
,
822 (int (*) (struct target_ops
*,
823 CORE_ADDR
, struct static_tracepoint_marker
*))
825 de_fault (to_static_tracepoint_markers_by_strid
,
826 (VEC(static_tracepoint_marker_p
) * (*) (struct target_ops
*,
829 de_fault (to_traceframe_info
,
830 (struct traceframe_info
* (*) (struct target_ops
*))
832 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
833 (int (*) (struct target_ops
*))
835 de_fault (to_can_run_breakpoint_commands
,
836 (int (*) (struct target_ops
*))
838 de_fault (to_use_agent
,
839 (int (*) (struct target_ops
*, int))
841 de_fault (to_can_use_agent
,
842 (int (*) (struct target_ops
*))
844 de_fault (to_augmented_libraries_svr4_read
,
845 (int (*) (struct target_ops
*))
850 /* Finally, position the target-stack beneath the squashed
851 "current_target". That way code looking for a non-inherited
852 target method can quickly and simply find it. */
853 current_target
.beneath
= target_stack
;
856 setup_target_debug ();
859 /* Push a new target type into the stack of the existing target accessors,
860 possibly superseding some of the existing accessors.
862 Rather than allow an empty stack, we always have the dummy target at
863 the bottom stratum, so we can call the function vectors without
867 push_target (struct target_ops
*t
)
869 struct target_ops
**cur
;
871 /* Check magic number. If wrong, it probably means someone changed
872 the struct definition, but not all the places that initialize one. */
873 if (t
->to_magic
!= OPS_MAGIC
)
875 fprintf_unfiltered (gdb_stderr
,
876 "Magic number of %s target struct wrong\n",
878 internal_error (__FILE__
, __LINE__
,
879 _("failed internal consistency check"));
882 /* Find the proper stratum to install this target in. */
883 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
885 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
889 /* If there's already targets at this stratum, remove them. */
890 /* FIXME: cagney/2003-10-15: I think this should be popping all
891 targets to CUR, and not just those at this stratum level. */
892 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
894 /* There's already something at this stratum level. Close it,
895 and un-hook it from the stack. */
896 struct target_ops
*tmp
= (*cur
);
898 (*cur
) = (*cur
)->beneath
;
903 /* We have removed all targets in our stratum, now add the new one. */
907 update_current_target ();
910 /* Remove a target_ops vector from the stack, wherever it may be.
911 Return how many times it was removed (0 or 1). */
914 unpush_target (struct target_ops
*t
)
916 struct target_ops
**cur
;
917 struct target_ops
*tmp
;
919 if (t
->to_stratum
== dummy_stratum
)
920 internal_error (__FILE__
, __LINE__
,
921 _("Attempt to unpush the dummy target"));
923 /* Look for the specified target. Note that we assume that a target
924 can only occur once in the target stack. */
926 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
932 /* If we don't find target_ops, quit. Only open targets should be
937 /* Unchain the target. */
939 (*cur
) = (*cur
)->beneath
;
942 update_current_target ();
944 /* Finally close the target. Note we do this after unchaining, so
945 any target method calls from within the target_close
946 implementation don't end up in T anymore. */
953 pop_all_targets_above (enum strata above_stratum
)
955 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
957 if (!unpush_target (target_stack
))
959 fprintf_unfiltered (gdb_stderr
,
960 "pop_all_targets couldn't find target %s\n",
961 target_stack
->to_shortname
);
962 internal_error (__FILE__
, __LINE__
,
963 _("failed internal consistency check"));
970 pop_all_targets (void)
972 pop_all_targets_above (dummy_stratum
);
975 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
978 target_is_pushed (struct target_ops
*t
)
980 struct target_ops
**cur
;
982 /* Check magic number. If wrong, it probably means someone changed
983 the struct definition, but not all the places that initialize one. */
984 if (t
->to_magic
!= OPS_MAGIC
)
986 fprintf_unfiltered (gdb_stderr
,
987 "Magic number of %s target struct wrong\n",
989 internal_error (__FILE__
, __LINE__
,
990 _("failed internal consistency check"));
993 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1000 /* Using the objfile specified in OBJFILE, find the address for the
1001 current thread's thread-local storage with offset OFFSET. */
1003 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1005 volatile CORE_ADDR addr
= 0;
1006 struct target_ops
*target
;
1008 for (target
= current_target
.beneath
;
1010 target
= target
->beneath
)
1012 if (target
->to_get_thread_local_address
!= NULL
)
1017 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
1019 ptid_t ptid
= inferior_ptid
;
1020 volatile struct gdb_exception ex
;
1022 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1026 /* Fetch the load module address for this objfile. */
1027 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1029 /* If it's 0, throw the appropriate exception. */
1031 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1032 _("TLS load module not found"));
1034 addr
= target
->to_get_thread_local_address (target
, ptid
,
1037 /* If an error occurred, print TLS related messages here. Otherwise,
1038 throw the error to some higher catcher. */
1041 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1045 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1046 error (_("Cannot find thread-local variables "
1047 "in this thread library."));
1049 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1050 if (objfile_is_library
)
1051 error (_("Cannot find shared library `%s' in dynamic"
1052 " linker's load module list"), objfile_name (objfile
));
1054 error (_("Cannot find executable file `%s' in dynamic"
1055 " linker's load module list"), objfile_name (objfile
));
1057 case TLS_NOT_ALLOCATED_YET_ERROR
:
1058 if (objfile_is_library
)
1059 error (_("The inferior has not yet allocated storage for"
1060 " thread-local variables in\n"
1061 "the shared library `%s'\n"
1063 objfile_name (objfile
), target_pid_to_str (ptid
));
1065 error (_("The inferior has not yet allocated storage for"
1066 " thread-local variables in\n"
1067 "the executable `%s'\n"
1069 objfile_name (objfile
), target_pid_to_str (ptid
));
1071 case TLS_GENERIC_ERROR
:
1072 if (objfile_is_library
)
1073 error (_("Cannot find thread-local storage for %s, "
1074 "shared library %s:\n%s"),
1075 target_pid_to_str (ptid
),
1076 objfile_name (objfile
), ex
.message
);
1078 error (_("Cannot find thread-local storage for %s, "
1079 "executable file %s:\n%s"),
1080 target_pid_to_str (ptid
),
1081 objfile_name (objfile
), ex
.message
);
1084 throw_exception (ex
);
1089 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1090 TLS is an ABI-specific thing. But we don't do that yet. */
1092 error (_("Cannot find thread-local variables on this target"));
1098 target_xfer_status_to_string (enum target_xfer_status err
)
1100 #define CASE(X) case X: return #X
1103 CASE(TARGET_XFER_E_IO
);
1104 CASE(TARGET_XFER_E_UNAVAILABLE
);
1113 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1115 /* target_read_string -- read a null terminated string, up to LEN bytes,
1116 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1117 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1118 is responsible for freeing it. Return the number of bytes successfully
1122 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1124 int tlen
, offset
, i
;
1128 int buffer_allocated
;
1130 unsigned int nbytes_read
= 0;
1132 gdb_assert (string
);
1134 /* Small for testing. */
1135 buffer_allocated
= 4;
1136 buffer
= xmalloc (buffer_allocated
);
1141 tlen
= MIN (len
, 4 - (memaddr
& 3));
1142 offset
= memaddr
& 3;
1144 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1147 /* The transfer request might have crossed the boundary to an
1148 unallocated region of memory. Retry the transfer, requesting
1152 errcode
= target_read_memory (memaddr
, buf
, 1);
1157 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1161 bytes
= bufptr
- buffer
;
1162 buffer_allocated
*= 2;
1163 buffer
= xrealloc (buffer
, buffer_allocated
);
1164 bufptr
= buffer
+ bytes
;
1167 for (i
= 0; i
< tlen
; i
++)
1169 *bufptr
++ = buf
[i
+ offset
];
1170 if (buf
[i
+ offset
] == '\000')
1172 nbytes_read
+= i
+ 1;
1179 nbytes_read
+= tlen
;
1188 struct target_section_table
*
1189 target_get_section_table (struct target_ops
*target
)
1191 struct target_ops
*t
;
1194 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1196 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1197 if (t
->to_get_section_table
!= NULL
)
1198 return (*t
->to_get_section_table
) (t
);
1203 /* Find a section containing ADDR. */
1205 struct target_section
*
1206 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1208 struct target_section_table
*table
= target_get_section_table (target
);
1209 struct target_section
*secp
;
1214 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1216 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1222 /* Read memory from the live target, even if currently inspecting a
1223 traceframe. The return is the same as that of target_read. */
1225 static enum target_xfer_status
1226 target_read_live_memory (enum target_object object
,
1227 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1228 ULONGEST
*xfered_len
)
1230 enum target_xfer_status ret
;
1231 struct cleanup
*cleanup
;
1233 /* Switch momentarily out of tfind mode so to access live memory.
1234 Note that this must not clear global state, such as the frame
1235 cache, which must still remain valid for the previous traceframe.
1236 We may be _building_ the frame cache at this point. */
1237 cleanup
= make_cleanup_restore_traceframe_number ();
1238 set_traceframe_number (-1);
1240 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1241 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1243 do_cleanups (cleanup
);
1247 /* Using the set of read-only target sections of OPS, read live
1248 read-only memory. Note that the actual reads start from the
1249 top-most target again.
1251 For interface/parameters/return description see target.h,
1254 static enum target_xfer_status
1255 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1256 enum target_object object
,
1257 gdb_byte
*readbuf
, ULONGEST memaddr
,
1258 ULONGEST len
, ULONGEST
*xfered_len
)
1260 struct target_section
*secp
;
1261 struct target_section_table
*table
;
1263 secp
= target_section_by_addr (ops
, memaddr
);
1265 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1266 secp
->the_bfd_section
)
1269 struct target_section
*p
;
1270 ULONGEST memend
= memaddr
+ len
;
1272 table
= target_get_section_table (ops
);
1274 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1276 if (memaddr
>= p
->addr
)
1278 if (memend
<= p
->endaddr
)
1280 /* Entire transfer is within this section. */
1281 return target_read_live_memory (object
, memaddr
,
1282 readbuf
, len
, xfered_len
);
1284 else if (memaddr
>= p
->endaddr
)
1286 /* This section ends before the transfer starts. */
1291 /* This section overlaps the transfer. Just do half. */
1292 len
= p
->endaddr
- memaddr
;
1293 return target_read_live_memory (object
, memaddr
,
1294 readbuf
, len
, xfered_len
);
1300 return TARGET_XFER_EOF
;
1303 /* Read memory from more than one valid target. A core file, for
1304 instance, could have some of memory but delegate other bits to
1305 the target below it. So, we must manually try all targets. */
1307 static enum target_xfer_status
1308 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1309 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1310 ULONGEST
*xfered_len
)
1312 enum target_xfer_status res
;
1316 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1317 readbuf
, writebuf
, memaddr
, len
,
1319 if (res
== TARGET_XFER_OK
)
1322 /* Stop if the target reports that the memory is not available. */
1323 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1326 /* We want to continue past core files to executables, but not
1327 past a running target's memory. */
1328 if (ops
->to_has_all_memory (ops
))
1333 while (ops
!= NULL
);
1338 /* Perform a partial memory transfer.
1339 For docs see target.h, to_xfer_partial. */
1341 static enum target_xfer_status
1342 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1343 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1344 ULONGEST len
, ULONGEST
*xfered_len
)
1346 enum target_xfer_status res
;
1348 struct mem_region
*region
;
1349 struct inferior
*inf
;
1351 /* For accesses to unmapped overlay sections, read directly from
1352 files. Must do this first, as MEMADDR may need adjustment. */
1353 if (readbuf
!= NULL
&& overlay_debugging
)
1355 struct obj_section
*section
= find_pc_overlay (memaddr
);
1357 if (pc_in_unmapped_range (memaddr
, section
))
1359 struct target_section_table
*table
1360 = target_get_section_table (ops
);
1361 const char *section_name
= section
->the_bfd_section
->name
;
1363 memaddr
= overlay_mapped_address (memaddr
, section
);
1364 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1365 memaddr
, len
, xfered_len
,
1367 table
->sections_end
,
1372 /* Try the executable files, if "trust-readonly-sections" is set. */
1373 if (readbuf
!= NULL
&& trust_readonly
)
1375 struct target_section
*secp
;
1376 struct target_section_table
*table
;
1378 secp
= target_section_by_addr (ops
, memaddr
);
1380 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1381 secp
->the_bfd_section
)
1384 table
= target_get_section_table (ops
);
1385 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1386 memaddr
, len
, xfered_len
,
1388 table
->sections_end
,
1393 /* If reading unavailable memory in the context of traceframes, and
1394 this address falls within a read-only section, fallback to
1395 reading from live memory. */
1396 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1398 VEC(mem_range_s
) *available
;
1400 /* If we fail to get the set of available memory, then the
1401 target does not support querying traceframe info, and so we
1402 attempt reading from the traceframe anyway (assuming the
1403 target implements the old QTro packet then). */
1404 if (traceframe_available_memory (&available
, memaddr
, len
))
1406 struct cleanup
*old_chain
;
1408 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1410 if (VEC_empty (mem_range_s
, available
)
1411 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1413 /* Don't read into the traceframe's available
1415 if (!VEC_empty (mem_range_s
, available
))
1417 LONGEST oldlen
= len
;
1419 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1420 gdb_assert (len
<= oldlen
);
1423 do_cleanups (old_chain
);
1425 /* This goes through the topmost target again. */
1426 res
= memory_xfer_live_readonly_partial (ops
, object
,
1429 if (res
== TARGET_XFER_OK
)
1430 return TARGET_XFER_OK
;
1433 /* No use trying further, we know some memory starting
1434 at MEMADDR isn't available. */
1436 return TARGET_XFER_E_UNAVAILABLE
;
1440 /* Don't try to read more than how much is available, in
1441 case the target implements the deprecated QTro packet to
1442 cater for older GDBs (the target's knowledge of read-only
1443 sections may be outdated by now). */
1444 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1446 do_cleanups (old_chain
);
1450 /* Try GDB's internal data cache. */
1451 region
= lookup_mem_region (memaddr
);
1452 /* region->hi == 0 means there's no upper bound. */
1453 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1456 reg_len
= region
->hi
- memaddr
;
1458 switch (region
->attrib
.mode
)
1461 if (writebuf
!= NULL
)
1462 return TARGET_XFER_E_IO
;
1466 if (readbuf
!= NULL
)
1467 return TARGET_XFER_E_IO
;
1471 /* We only support writing to flash during "load" for now. */
1472 if (writebuf
!= NULL
)
1473 error (_("Writing to flash memory forbidden in this context"));
1477 return TARGET_XFER_E_IO
;
1480 if (!ptid_equal (inferior_ptid
, null_ptid
))
1481 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1486 /* The dcache reads whole cache lines; that doesn't play well
1487 with reading from a trace buffer, because reading outside of
1488 the collected memory range fails. */
1489 && get_traceframe_number () == -1
1490 && (region
->attrib
.cache
1491 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1492 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1494 DCACHE
*dcache
= target_dcache_get_or_init ();
1497 if (readbuf
!= NULL
)
1498 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1500 /* FIXME drow/2006-08-09: If we're going to preserve const
1501 correctness dcache_xfer_memory should take readbuf and
1503 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1506 return TARGET_XFER_E_IO
;
1509 *xfered_len
= (ULONGEST
) l
;
1510 return TARGET_XFER_OK
;
1514 /* If none of those methods found the memory we wanted, fall back
1515 to a target partial transfer. Normally a single call to
1516 to_xfer_partial is enough; if it doesn't recognize an object
1517 it will call the to_xfer_partial of the next target down.
1518 But for memory this won't do. Memory is the only target
1519 object which can be read from more than one valid target.
1520 A core file, for instance, could have some of memory but
1521 delegate other bits to the target below it. So, we must
1522 manually try all targets. */
1524 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1527 /* Make sure the cache gets updated no matter what - if we are writing
1528 to the stack. Even if this write is not tagged as such, we still need
1529 to update the cache. */
1531 if (res
== TARGET_XFER_OK
1534 && target_dcache_init_p ()
1535 && !region
->attrib
.cache
1536 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1537 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1539 DCACHE
*dcache
= target_dcache_get ();
1541 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1544 /* If we still haven't got anything, return the last error. We
1549 /* Perform a partial memory transfer. For docs see target.h,
1552 static enum target_xfer_status
1553 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1554 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1555 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1557 enum target_xfer_status res
;
1559 /* Zero length requests are ok and require no work. */
1561 return TARGET_XFER_EOF
;
1563 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1564 breakpoint insns, thus hiding out from higher layers whether
1565 there are software breakpoints inserted in the code stream. */
1566 if (readbuf
!= NULL
)
1568 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1571 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1572 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1577 struct cleanup
*old_chain
;
1579 /* A large write request is likely to be partially satisfied
1580 by memory_xfer_partial_1. We will continually malloc
1581 and free a copy of the entire write request for breakpoint
1582 shadow handling even though we only end up writing a small
1583 subset of it. Cap writes to 4KB to mitigate this. */
1584 len
= min (4096, len
);
1586 buf
= xmalloc (len
);
1587 old_chain
= make_cleanup (xfree
, buf
);
1588 memcpy (buf
, writebuf
, len
);
1590 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1591 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1594 do_cleanups (old_chain
);
1601 restore_show_memory_breakpoints (void *arg
)
1603 show_memory_breakpoints
= (uintptr_t) arg
;
1607 make_show_memory_breakpoints_cleanup (int show
)
1609 int current
= show_memory_breakpoints
;
1611 show_memory_breakpoints
= show
;
1612 return make_cleanup (restore_show_memory_breakpoints
,
1613 (void *) (uintptr_t) current
);
1616 /* For docs see target.h, to_xfer_partial. */
1618 enum target_xfer_status
1619 target_xfer_partial (struct target_ops
*ops
,
1620 enum target_object object
, const char *annex
,
1621 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1622 ULONGEST offset
, ULONGEST len
,
1623 ULONGEST
*xfered_len
)
1625 enum target_xfer_status retval
;
1627 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1629 /* Transfer is done when LEN is zero. */
1631 return TARGET_XFER_EOF
;
1633 if (writebuf
&& !may_write_memory
)
1634 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1635 core_addr_to_string_nz (offset
), plongest (len
));
1639 /* If this is a memory transfer, let the memory-specific code
1640 have a look at it instead. Memory transfers are more
1642 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1643 || object
== TARGET_OBJECT_CODE_MEMORY
)
1644 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1645 writebuf
, offset
, len
, xfered_len
);
1646 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1648 /* Request the normal memory object from other layers. */
1649 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1653 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1654 writebuf
, offset
, len
, xfered_len
);
1658 const unsigned char *myaddr
= NULL
;
1660 fprintf_unfiltered (gdb_stdlog
,
1661 "%s:target_xfer_partial "
1662 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1665 (annex
? annex
: "(null)"),
1666 host_address_to_string (readbuf
),
1667 host_address_to_string (writebuf
),
1668 core_addr_to_string_nz (offset
),
1669 pulongest (len
), retval
,
1670 pulongest (*xfered_len
));
1676 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1680 fputs_unfiltered (", bytes =", gdb_stdlog
);
1681 for (i
= 0; i
< *xfered_len
; i
++)
1683 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1685 if (targetdebug
< 2 && i
> 0)
1687 fprintf_unfiltered (gdb_stdlog
, " ...");
1690 fprintf_unfiltered (gdb_stdlog
, "\n");
1693 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1697 fputc_unfiltered ('\n', gdb_stdlog
);
1700 /* Check implementations of to_xfer_partial update *XFERED_LEN
1701 properly. Do assertion after printing debug messages, so that we
1702 can find more clues on assertion failure from debugging messages. */
1703 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1704 gdb_assert (*xfered_len
> 0);
1709 /* Read LEN bytes of target memory at address MEMADDR, placing the
1710 results in GDB's memory at MYADDR. Returns either 0 for success or
1711 TARGET_XFER_E_IO if any error occurs.
1713 If an error occurs, no guarantee is made about the contents of the data at
1714 MYADDR. In particular, the caller should not depend upon partial reads
1715 filling the buffer with good data. There is no way for the caller to know
1716 how much good data might have been transfered anyway. Callers that can
1717 deal with partial reads should call target_read (which will retry until
1718 it makes no progress, and then return how much was transferred). */
1721 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1723 /* Dispatch to the topmost target, not the flattened current_target.
1724 Memory accesses check target->to_has_(all_)memory, and the
1725 flattened target doesn't inherit those. */
1726 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1727 myaddr
, memaddr
, len
) == len
)
1730 return TARGET_XFER_E_IO
;
1733 /* Like target_read_memory, but specify explicitly that this is a read
1734 from the target's raw memory. That is, this read bypasses the
1735 dcache, breakpoint shadowing, etc. */
1738 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1740 /* See comment in target_read_memory about why the request starts at
1741 current_target.beneath. */
1742 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1743 myaddr
, memaddr
, len
) == len
)
1746 return TARGET_XFER_E_IO
;
1749 /* Like target_read_memory, but specify explicitly that this is a read from
1750 the target's stack. This may trigger different cache behavior. */
1753 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1755 /* See comment in target_read_memory about why the request starts at
1756 current_target.beneath. */
1757 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1758 myaddr
, memaddr
, len
) == len
)
1761 return TARGET_XFER_E_IO
;
1764 /* Like target_read_memory, but specify explicitly that this is a read from
1765 the target's code. This may trigger different cache behavior. */
1768 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1770 /* See comment in target_read_memory about why the request starts at
1771 current_target.beneath. */
1772 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1773 myaddr
, memaddr
, len
) == len
)
1776 return TARGET_XFER_E_IO
;
1779 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1780 Returns either 0 for success or TARGET_XFER_E_IO if any
1781 error occurs. If an error occurs, no guarantee is made about how
1782 much data got written. Callers that can deal with partial writes
1783 should call target_write. */
1786 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1788 /* See comment in target_read_memory about why the request starts at
1789 current_target.beneath. */
1790 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1791 myaddr
, memaddr
, len
) == len
)
1794 return TARGET_XFER_E_IO
;
1797 /* Write LEN bytes from MYADDR to target raw memory at address
1798 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1799 if any error occurs. If an error occurs, no guarantee is made
1800 about how much data got written. Callers that can deal with
1801 partial writes should call target_write. */
1804 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1806 /* See comment in target_read_memory about why the request starts at
1807 current_target.beneath. */
1808 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1809 myaddr
, memaddr
, len
) == len
)
1812 return TARGET_XFER_E_IO
;
1815 /* Fetch the target's memory map. */
1818 target_memory_map (void)
1820 VEC(mem_region_s
) *result
;
1821 struct mem_region
*last_one
, *this_one
;
1823 struct target_ops
*t
;
1826 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1828 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1829 if (t
->to_memory_map
!= NULL
)
1835 result
= t
->to_memory_map (t
);
1839 qsort (VEC_address (mem_region_s
, result
),
1840 VEC_length (mem_region_s
, result
),
1841 sizeof (struct mem_region
), mem_region_cmp
);
1843 /* Check that regions do not overlap. Simultaneously assign
1844 a numbering for the "mem" commands to use to refer to
1847 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1849 this_one
->number
= ix
;
1851 if (last_one
&& last_one
->hi
> this_one
->lo
)
1853 warning (_("Overlapping regions in memory map: ignoring"));
1854 VEC_free (mem_region_s
, result
);
1857 last_one
= this_one
;
1864 target_flash_erase (ULONGEST address
, LONGEST length
)
1866 struct target_ops
*t
;
1868 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1869 if (t
->to_flash_erase
!= NULL
)
1872 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1873 hex_string (address
), phex (length
, 0));
1874 t
->to_flash_erase (t
, address
, length
);
1882 target_flash_done (void)
1884 struct target_ops
*t
;
1886 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1887 if (t
->to_flash_done
!= NULL
)
1890 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1891 t
->to_flash_done (t
);
1899 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1900 struct cmd_list_element
*c
, const char *value
)
1902 fprintf_filtered (file
,
1903 _("Mode for reading from readonly sections is %s.\n"),
1907 /* More generic transfers. */
1909 static enum target_xfer_status
1910 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1911 const char *annex
, gdb_byte
*readbuf
,
1912 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1913 ULONGEST
*xfered_len
)
1915 if (object
== TARGET_OBJECT_MEMORY
1916 && ops
->deprecated_xfer_memory
!= NULL
)
1917 /* If available, fall back to the target's
1918 "deprecated_xfer_memory" method. */
1923 if (writebuf
!= NULL
)
1925 void *buffer
= xmalloc (len
);
1926 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1928 memcpy (buffer
, writebuf
, len
);
1929 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1930 1/*write*/, NULL
, ops
);
1931 do_cleanups (cleanup
);
1933 if (readbuf
!= NULL
)
1934 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1935 0/*read*/, NULL
, ops
);
1938 *xfered_len
= (ULONGEST
) xfered
;
1939 return TARGET_XFER_E_IO
;
1941 else if (xfered
== 0 && errno
== 0)
1942 /* "deprecated_xfer_memory" uses 0, cross checked against
1943 ERRNO as one indication of an error. */
1944 return TARGET_XFER_EOF
;
1946 return TARGET_XFER_E_IO
;
1950 gdb_assert (ops
->beneath
!= NULL
);
1951 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1952 readbuf
, writebuf
, offset
, len
,
1957 /* Target vector read/write partial wrapper functions. */
1959 static enum target_xfer_status
1960 target_read_partial (struct target_ops
*ops
,
1961 enum target_object object
,
1962 const char *annex
, gdb_byte
*buf
,
1963 ULONGEST offset
, ULONGEST len
,
1964 ULONGEST
*xfered_len
)
1966 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
1970 static enum target_xfer_status
1971 target_write_partial (struct target_ops
*ops
,
1972 enum target_object object
,
1973 const char *annex
, const gdb_byte
*buf
,
1974 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
1976 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
1980 /* Wrappers to perform the full transfer. */
1982 /* For docs on target_read see target.h. */
1985 target_read (struct target_ops
*ops
,
1986 enum target_object object
,
1987 const char *annex
, gdb_byte
*buf
,
1988 ULONGEST offset
, LONGEST len
)
1992 while (xfered
< len
)
1994 ULONGEST xfered_len
;
1995 enum target_xfer_status status
;
1997 status
= target_read_partial (ops
, object
, annex
,
1998 (gdb_byte
*) buf
+ xfered
,
1999 offset
+ xfered
, len
- xfered
,
2002 /* Call an observer, notifying them of the xfer progress? */
2003 if (status
== TARGET_XFER_EOF
)
2005 else if (status
== TARGET_XFER_OK
)
2007 xfered
+= xfered_len
;
2017 /* Assuming that the entire [begin, end) range of memory cannot be
2018 read, try to read whatever subrange is possible to read.
2020 The function returns, in RESULT, either zero or one memory block.
2021 If there's a readable subrange at the beginning, it is completely
2022 read and returned. Any further readable subrange will not be read.
2023 Otherwise, if there's a readable subrange at the end, it will be
2024 completely read and returned. Any readable subranges before it
2025 (obviously, not starting at the beginning), will be ignored. In
2026 other cases -- either no readable subrange, or readable subrange(s)
2027 that is neither at the beginning, or end, nothing is returned.
2029 The purpose of this function is to handle a read across a boundary
2030 of accessible memory in a case when memory map is not available.
2031 The above restrictions are fine for this case, but will give
2032 incorrect results if the memory is 'patchy'. However, supporting
2033 'patchy' memory would require trying to read every single byte,
2034 and it seems unacceptable solution. Explicit memory map is
2035 recommended for this case -- and target_read_memory_robust will
2036 take care of reading multiple ranges then. */
2039 read_whatever_is_readable (struct target_ops
*ops
,
2040 ULONGEST begin
, ULONGEST end
,
2041 VEC(memory_read_result_s
) **result
)
2043 gdb_byte
*buf
= xmalloc (end
- begin
);
2044 ULONGEST current_begin
= begin
;
2045 ULONGEST current_end
= end
;
2047 memory_read_result_s r
;
2048 ULONGEST xfered_len
;
2050 /* If we previously failed to read 1 byte, nothing can be done here. */
2051 if (end
- begin
<= 1)
2057 /* Check that either first or the last byte is readable, and give up
2058 if not. This heuristic is meant to permit reading accessible memory
2059 at the boundary of accessible region. */
2060 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2061 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
2066 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2067 buf
+ (end
-begin
) - 1, end
- 1, 1,
2068 &xfered_len
) == TARGET_XFER_OK
)
2079 /* Loop invariant is that the [current_begin, current_end) was previously
2080 found to be not readable as a whole.
2082 Note loop condition -- if the range has 1 byte, we can't divide the range
2083 so there's no point trying further. */
2084 while (current_end
- current_begin
> 1)
2086 ULONGEST first_half_begin
, first_half_end
;
2087 ULONGEST second_half_begin
, second_half_end
;
2089 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2093 first_half_begin
= current_begin
;
2094 first_half_end
= middle
;
2095 second_half_begin
= middle
;
2096 second_half_end
= current_end
;
2100 first_half_begin
= middle
;
2101 first_half_end
= current_end
;
2102 second_half_begin
= current_begin
;
2103 second_half_end
= middle
;
2106 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2107 buf
+ (first_half_begin
- begin
),
2109 first_half_end
- first_half_begin
);
2111 if (xfer
== first_half_end
- first_half_begin
)
2113 /* This half reads up fine. So, the error must be in the
2115 current_begin
= second_half_begin
;
2116 current_end
= second_half_end
;
2120 /* This half is not readable. Because we've tried one byte, we
2121 know some part of this half if actually redable. Go to the next
2122 iteration to divide again and try to read.
2124 We don't handle the other half, because this function only tries
2125 to read a single readable subrange. */
2126 current_begin
= first_half_begin
;
2127 current_end
= first_half_end
;
2133 /* The [begin, current_begin) range has been read. */
2135 r
.end
= current_begin
;
2140 /* The [current_end, end) range has been read. */
2141 LONGEST rlen
= end
- current_end
;
2143 r
.data
= xmalloc (rlen
);
2144 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2145 r
.begin
= current_end
;
2149 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2153 free_memory_read_result_vector (void *x
)
2155 VEC(memory_read_result_s
) *v
= x
;
2156 memory_read_result_s
*current
;
2159 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2161 xfree (current
->data
);
2163 VEC_free (memory_read_result_s
, v
);
2166 VEC(memory_read_result_s
) *
2167 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2169 VEC(memory_read_result_s
) *result
= 0;
2172 while (xfered
< len
)
2174 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2177 /* If there is no explicit region, a fake one should be created. */
2178 gdb_assert (region
);
2180 if (region
->hi
== 0)
2181 rlen
= len
- xfered
;
2183 rlen
= region
->hi
- offset
;
2185 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2187 /* Cannot read this region. Note that we can end up here only
2188 if the region is explicitly marked inaccessible, or
2189 'inaccessible-by-default' is in effect. */
2194 LONGEST to_read
= min (len
- xfered
, rlen
);
2195 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2197 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2198 (gdb_byte
*) buffer
,
2199 offset
+ xfered
, to_read
);
2200 /* Call an observer, notifying them of the xfer progress? */
2203 /* Got an error reading full chunk. See if maybe we can read
2206 read_whatever_is_readable (ops
, offset
+ xfered
,
2207 offset
+ xfered
+ to_read
, &result
);
2212 struct memory_read_result r
;
2214 r
.begin
= offset
+ xfered
;
2215 r
.end
= r
.begin
+ xfer
;
2216 VEC_safe_push (memory_read_result_s
, result
, &r
);
2226 /* An alternative to target_write with progress callbacks. */
2229 target_write_with_progress (struct target_ops
*ops
,
2230 enum target_object object
,
2231 const char *annex
, const gdb_byte
*buf
,
2232 ULONGEST offset
, LONGEST len
,
2233 void (*progress
) (ULONGEST
, void *), void *baton
)
2237 /* Give the progress callback a chance to set up. */
2239 (*progress
) (0, baton
);
2241 while (xfered
< len
)
2243 ULONGEST xfered_len
;
2244 enum target_xfer_status status
;
2246 status
= target_write_partial (ops
, object
, annex
,
2247 (gdb_byte
*) buf
+ xfered
,
2248 offset
+ xfered
, len
- xfered
,
2251 if (status
== TARGET_XFER_EOF
)
2253 if (TARGET_XFER_STATUS_ERROR_P (status
))
2256 gdb_assert (status
== TARGET_XFER_OK
);
2258 (*progress
) (xfered_len
, baton
);
2260 xfered
+= xfered_len
;
2266 /* For docs on target_write see target.h. */
2269 target_write (struct target_ops
*ops
,
2270 enum target_object object
,
2271 const char *annex
, const gdb_byte
*buf
,
2272 ULONGEST offset
, LONGEST len
)
2274 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2278 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2279 the size of the transferred data. PADDING additional bytes are
2280 available in *BUF_P. This is a helper function for
2281 target_read_alloc; see the declaration of that function for more
2285 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2286 const char *annex
, gdb_byte
**buf_p
, int padding
)
2288 size_t buf_alloc
, buf_pos
;
2291 /* This function does not have a length parameter; it reads the
2292 entire OBJECT). Also, it doesn't support objects fetched partly
2293 from one target and partly from another (in a different stratum,
2294 e.g. a core file and an executable). Both reasons make it
2295 unsuitable for reading memory. */
2296 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2298 /* Start by reading up to 4K at a time. The target will throttle
2299 this number down if necessary. */
2301 buf
= xmalloc (buf_alloc
);
2305 ULONGEST xfered_len
;
2306 enum target_xfer_status status
;
2308 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2309 buf_pos
, buf_alloc
- buf_pos
- padding
,
2312 if (status
== TARGET_XFER_EOF
)
2314 /* Read all there was. */
2321 else if (status
!= TARGET_XFER_OK
)
2323 /* An error occurred. */
2325 return TARGET_XFER_E_IO
;
2328 buf_pos
+= xfered_len
;
2330 /* If the buffer is filling up, expand it. */
2331 if (buf_alloc
< buf_pos
* 2)
2334 buf
= xrealloc (buf
, buf_alloc
);
2341 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2342 the size of the transferred data. See the declaration in "target.h"
2343 function for more information about the return value. */
2346 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2347 const char *annex
, gdb_byte
**buf_p
)
2349 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2352 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2353 returned as a string, allocated using xmalloc. If an error occurs
2354 or the transfer is unsupported, NULL is returned. Empty objects
2355 are returned as allocated but empty strings. A warning is issued
2356 if the result contains any embedded NUL bytes. */
2359 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2364 LONGEST i
, transferred
;
2366 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2367 bufstr
= (char *) buffer
;
2369 if (transferred
< 0)
2372 if (transferred
== 0)
2373 return xstrdup ("");
2375 bufstr
[transferred
] = 0;
2377 /* Check for embedded NUL bytes; but allow trailing NULs. */
2378 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2381 warning (_("target object %d, annex %s, "
2382 "contained unexpected null characters"),
2383 (int) object
, annex
? annex
: "(none)");
2390 /* Memory transfer methods. */
2393 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2396 /* This method is used to read from an alternate, non-current
2397 target. This read must bypass the overlay support (as symbols
2398 don't match this target), and GDB's internal cache (wrong cache
2399 for this target). */
2400 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2402 memory_error (TARGET_XFER_E_IO
, addr
);
2406 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2407 int len
, enum bfd_endian byte_order
)
2409 gdb_byte buf
[sizeof (ULONGEST
)];
2411 gdb_assert (len
<= sizeof (buf
));
2412 get_target_memory (ops
, addr
, buf
, len
);
2413 return extract_unsigned_integer (buf
, len
, byte_order
);
2419 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2420 struct bp_target_info
*bp_tgt
)
2422 if (!may_insert_breakpoints
)
2424 warning (_("May not insert breakpoints"));
2428 return current_target
.to_insert_breakpoint (¤t_target
,
2435 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2436 struct bp_target_info
*bp_tgt
)
2438 /* This is kind of a weird case to handle, but the permission might
2439 have been changed after breakpoints were inserted - in which case
2440 we should just take the user literally and assume that any
2441 breakpoints should be left in place. */
2442 if (!may_insert_breakpoints
)
2444 warning (_("May not remove breakpoints"));
2448 return current_target
.to_remove_breakpoint (¤t_target
,
2453 target_info (char *args
, int from_tty
)
2455 struct target_ops
*t
;
2456 int has_all_mem
= 0;
2458 if (symfile_objfile
!= NULL
)
2459 printf_unfiltered (_("Symbols from \"%s\".\n"),
2460 objfile_name (symfile_objfile
));
2462 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2464 if (!(*t
->to_has_memory
) (t
))
2467 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2470 printf_unfiltered (_("\tWhile running this, "
2471 "GDB does not access memory from...\n"));
2472 printf_unfiltered ("%s:\n", t
->to_longname
);
2473 (t
->to_files_info
) (t
);
2474 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2478 /* This function is called before any new inferior is created, e.g.
2479 by running a program, attaching, or connecting to a target.
2480 It cleans up any state from previous invocations which might
2481 change between runs. This is a subset of what target_preopen
2482 resets (things which might change between targets). */
2485 target_pre_inferior (int from_tty
)
2487 /* Clear out solib state. Otherwise the solib state of the previous
2488 inferior might have survived and is entirely wrong for the new
2489 target. This has been observed on GNU/Linux using glibc 2.3. How
2501 Cannot access memory at address 0xdeadbeef
2504 /* In some OSs, the shared library list is the same/global/shared
2505 across inferiors. If code is shared between processes, so are
2506 memory regions and features. */
2507 if (!gdbarch_has_global_solist (target_gdbarch ()))
2509 no_shared_libraries (NULL
, from_tty
);
2511 invalidate_target_mem_regions ();
2513 target_clear_description ();
2516 agent_capability_invalidate ();
2519 /* Callback for iterate_over_inferiors. Gets rid of the given
2523 dispose_inferior (struct inferior
*inf
, void *args
)
2525 struct thread_info
*thread
;
2527 thread
= any_thread_of_process (inf
->pid
);
2530 switch_to_thread (thread
->ptid
);
2532 /* Core inferiors actually should be detached, not killed. */
2533 if (target_has_execution
)
2536 target_detach (NULL
, 0);
2542 /* This is to be called by the open routine before it does
2546 target_preopen (int from_tty
)
2550 if (have_inferiors ())
2553 || !have_live_inferiors ()
2554 || query (_("A program is being debugged already. Kill it? ")))
2555 iterate_over_inferiors (dispose_inferior
, NULL
);
2557 error (_("Program not killed."));
2560 /* Calling target_kill may remove the target from the stack. But if
2561 it doesn't (which seems like a win for UDI), remove it now. */
2562 /* Leave the exec target, though. The user may be switching from a
2563 live process to a core of the same program. */
2564 pop_all_targets_above (file_stratum
);
2566 target_pre_inferior (from_tty
);
2569 /* Detach a target after doing deferred register stores. */
2572 target_detach (const char *args
, int from_tty
)
2574 struct target_ops
* t
;
2576 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2577 /* Don't remove global breakpoints here. They're removed on
2578 disconnection from the target. */
2581 /* If we're in breakpoints-always-inserted mode, have to remove
2582 them before detaching. */
2583 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2585 prepare_for_detach ();
2587 current_target
.to_detach (¤t_target
, args
, from_tty
);
2589 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2594 target_disconnect (char *args
, int from_tty
)
2596 struct target_ops
*t
;
2598 /* If we're in breakpoints-always-inserted mode or if breakpoints
2599 are global across processes, we have to remove them before
2601 remove_breakpoints ();
2603 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2604 if (t
->to_disconnect
!= NULL
)
2607 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2609 t
->to_disconnect (t
, args
, from_tty
);
2617 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2619 struct target_ops
*t
;
2620 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2625 char *status_string
;
2626 char *options_string
;
2628 status_string
= target_waitstatus_to_string (status
);
2629 options_string
= target_options_to_string (options
);
2630 fprintf_unfiltered (gdb_stdlog
,
2631 "target_wait (%d, status, options={%s})"
2633 ptid_get_pid (ptid
), options_string
,
2634 ptid_get_pid (retval
), status_string
);
2635 xfree (status_string
);
2636 xfree (options_string
);
2643 target_pid_to_str (ptid_t ptid
)
2645 struct target_ops
*t
;
2647 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2649 if (t
->to_pid_to_str
!= NULL
)
2650 return (*t
->to_pid_to_str
) (t
, ptid
);
2653 return normal_pid_to_str (ptid
);
2657 target_thread_name (struct thread_info
*info
)
2659 return current_target
.to_thread_name (¤t_target
, info
);
2663 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2665 struct target_ops
*t
;
2667 target_dcache_invalidate ();
2669 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2671 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2672 ptid_get_pid (ptid
),
2673 step
? "step" : "continue",
2674 gdb_signal_to_name (signal
));
2676 registers_changed_ptid (ptid
);
2677 set_executing (ptid
, 1);
2678 set_running (ptid
, 1);
2679 clear_inline_frame_state (ptid
);
2683 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2685 struct target_ops
*t
;
2687 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2689 if (t
->to_pass_signals
!= NULL
)
2695 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2698 for (i
= 0; i
< numsigs
; i
++)
2699 if (pass_signals
[i
])
2700 fprintf_unfiltered (gdb_stdlog
, " %s",
2701 gdb_signal_to_name (i
));
2703 fprintf_unfiltered (gdb_stdlog
, " })\n");
2706 (*t
->to_pass_signals
) (t
, numsigs
, pass_signals
);
2713 target_program_signals (int numsigs
, unsigned char *program_signals
)
2715 struct target_ops
*t
;
2717 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2719 if (t
->to_program_signals
!= NULL
)
2725 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2728 for (i
= 0; i
< numsigs
; i
++)
2729 if (program_signals
[i
])
2730 fprintf_unfiltered (gdb_stdlog
, " %s",
2731 gdb_signal_to_name (i
));
2733 fprintf_unfiltered (gdb_stdlog
, " })\n");
2736 (*t
->to_program_signals
) (t
, numsigs
, program_signals
);
2742 /* Look through the list of possible targets for a target that can
2746 target_follow_fork (int follow_child
, int detach_fork
)
2748 struct target_ops
*t
;
2750 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2752 if (t
->to_follow_fork
!= NULL
)
2754 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2757 fprintf_unfiltered (gdb_stdlog
,
2758 "target_follow_fork (%d, %d) = %d\n",
2759 follow_child
, detach_fork
, retval
);
2764 /* Some target returned a fork event, but did not know how to follow it. */
2765 internal_error (__FILE__
, __LINE__
,
2766 _("could not find a target to follow fork"));
2770 target_mourn_inferior (void)
2772 struct target_ops
*t
;
2774 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2776 if (t
->to_mourn_inferior
!= NULL
)
2778 t
->to_mourn_inferior (t
);
2780 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2782 /* We no longer need to keep handles on any of the object files.
2783 Make sure to release them to avoid unnecessarily locking any
2784 of them while we're not actually debugging. */
2785 bfd_cache_close_all ();
2791 internal_error (__FILE__
, __LINE__
,
2792 _("could not find a target to follow mourn inferior"));
2795 /* Look for a target which can describe architectural features, starting
2796 from TARGET. If we find one, return its description. */
2798 const struct target_desc
*
2799 target_read_description (struct target_ops
*target
)
2801 struct target_ops
*t
;
2803 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2804 if (t
->to_read_description
!= NULL
)
2806 const struct target_desc
*tdesc
;
2808 tdesc
= t
->to_read_description (t
);
2816 /* The default implementation of to_search_memory.
2817 This implements a basic search of memory, reading target memory and
2818 performing the search here (as opposed to performing the search in on the
2819 target side with, for example, gdbserver). */
2822 simple_search_memory (struct target_ops
*ops
,
2823 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2824 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2825 CORE_ADDR
*found_addrp
)
2827 /* NOTE: also defined in find.c testcase. */
2828 #define SEARCH_CHUNK_SIZE 16000
2829 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2830 /* Buffer to hold memory contents for searching. */
2831 gdb_byte
*search_buf
;
2832 unsigned search_buf_size
;
2833 struct cleanup
*old_cleanups
;
2835 search_buf_size
= chunk_size
+ pattern_len
- 1;
2837 /* No point in trying to allocate a buffer larger than the search space. */
2838 if (search_space_len
< search_buf_size
)
2839 search_buf_size
= search_space_len
;
2841 search_buf
= malloc (search_buf_size
);
2842 if (search_buf
== NULL
)
2843 error (_("Unable to allocate memory to perform the search."));
2844 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2846 /* Prime the search buffer. */
2848 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2849 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2851 warning (_("Unable to access %s bytes of target "
2852 "memory at %s, halting search."),
2853 pulongest (search_buf_size
), hex_string (start_addr
));
2854 do_cleanups (old_cleanups
);
2858 /* Perform the search.
2860 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2861 When we've scanned N bytes we copy the trailing bytes to the start and
2862 read in another N bytes. */
2864 while (search_space_len
>= pattern_len
)
2866 gdb_byte
*found_ptr
;
2867 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2869 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2870 pattern
, pattern_len
);
2872 if (found_ptr
!= NULL
)
2874 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2876 *found_addrp
= found_addr
;
2877 do_cleanups (old_cleanups
);
2881 /* Not found in this chunk, skip to next chunk. */
2883 /* Don't let search_space_len wrap here, it's unsigned. */
2884 if (search_space_len
>= chunk_size
)
2885 search_space_len
-= chunk_size
;
2887 search_space_len
= 0;
2889 if (search_space_len
>= pattern_len
)
2891 unsigned keep_len
= search_buf_size
- chunk_size
;
2892 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2895 /* Copy the trailing part of the previous iteration to the front
2896 of the buffer for the next iteration. */
2897 gdb_assert (keep_len
== pattern_len
- 1);
2898 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2900 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2902 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2903 search_buf
+ keep_len
, read_addr
,
2904 nr_to_read
) != nr_to_read
)
2906 warning (_("Unable to access %s bytes of target "
2907 "memory at %s, halting search."),
2908 plongest (nr_to_read
),
2909 hex_string (read_addr
));
2910 do_cleanups (old_cleanups
);
2914 start_addr
+= chunk_size
;
2920 do_cleanups (old_cleanups
);
2924 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2925 sequence of bytes in PATTERN with length PATTERN_LEN.
2927 The result is 1 if found, 0 if not found, and -1 if there was an error
2928 requiring halting of the search (e.g. memory read error).
2929 If the pattern is found the address is recorded in FOUND_ADDRP. */
2932 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2933 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2934 CORE_ADDR
*found_addrp
)
2936 struct target_ops
*t
;
2939 /* We don't use INHERIT to set current_target.to_search_memory,
2940 so we have to scan the target stack and handle targetdebug
2944 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2945 hex_string (start_addr
));
2947 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2948 if (t
->to_search_memory
!= NULL
)
2953 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2954 pattern
, pattern_len
, found_addrp
);
2958 /* If a special version of to_search_memory isn't available, use the
2960 found
= simple_search_memory (current_target
.beneath
,
2961 start_addr
, search_space_len
,
2962 pattern
, pattern_len
, found_addrp
);
2966 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2971 /* Look through the currently pushed targets. If none of them will
2972 be able to restart the currently running process, issue an error
2976 target_require_runnable (void)
2978 struct target_ops
*t
;
2980 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2982 /* If this target knows how to create a new program, then
2983 assume we will still be able to after killing the current
2984 one. Either killing and mourning will not pop T, or else
2985 find_default_run_target will find it again. */
2986 if (t
->to_create_inferior
!= NULL
)
2989 /* Do not worry about thread_stratum targets that can not
2990 create inferiors. Assume they will be pushed again if
2991 necessary, and continue to the process_stratum. */
2992 if (t
->to_stratum
== thread_stratum
2993 || t
->to_stratum
== arch_stratum
)
2996 error (_("The \"%s\" target does not support \"run\". "
2997 "Try \"help target\" or \"continue\"."),
3001 /* This function is only called if the target is running. In that
3002 case there should have been a process_stratum target and it
3003 should either know how to create inferiors, or not... */
3004 internal_error (__FILE__
, __LINE__
, _("No targets found"));
3007 /* Look through the list of possible targets for a target that can
3008 execute a run or attach command without any other data. This is
3009 used to locate the default process stratum.
3011 If DO_MESG is not NULL, the result is always valid (error() is
3012 called for errors); else, return NULL on error. */
3014 static struct target_ops
*
3015 find_default_run_target (char *do_mesg
)
3017 struct target_ops
**t
;
3018 struct target_ops
*runable
= NULL
;
3023 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3026 if ((*t
)->to_can_run
&& target_can_run (*t
))
3036 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3045 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3047 struct target_ops
*t
;
3049 t
= find_default_run_target ("attach");
3050 (t
->to_attach
) (t
, args
, from_tty
);
3055 find_default_create_inferior (struct target_ops
*ops
,
3056 char *exec_file
, char *allargs
, char **env
,
3059 struct target_ops
*t
;
3061 t
= find_default_run_target ("run");
3062 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3067 find_default_can_async_p (struct target_ops
*ignore
)
3069 struct target_ops
*t
;
3071 /* This may be called before the target is pushed on the stack;
3072 look for the default process stratum. If there's none, gdb isn't
3073 configured with a native debugger, and target remote isn't
3075 t
= find_default_run_target (NULL
);
3076 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
3077 return (t
->to_can_async_p
) (t
);
3082 find_default_is_async_p (struct target_ops
*ignore
)
3084 struct target_ops
*t
;
3086 /* This may be called before the target is pushed on the stack;
3087 look for the default process stratum. If there's none, gdb isn't
3088 configured with a native debugger, and target remote isn't
3090 t
= find_default_run_target (NULL
);
3091 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
3092 return (t
->to_is_async_p
) (t
);
3097 find_default_supports_non_stop (struct target_ops
*self
)
3099 struct target_ops
*t
;
3101 t
= find_default_run_target (NULL
);
3102 if (t
&& t
->to_supports_non_stop
)
3103 return (t
->to_supports_non_stop
) (t
);
3108 target_supports_non_stop (void)
3110 struct target_ops
*t
;
3112 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3113 if (t
->to_supports_non_stop
)
3114 return t
->to_supports_non_stop (t
);
3119 /* Implement the "info proc" command. */
3122 target_info_proc (char *args
, enum info_proc_what what
)
3124 struct target_ops
*t
;
3126 /* If we're already connected to something that can get us OS
3127 related data, use it. Otherwise, try using the native
3129 if (current_target
.to_stratum
>= process_stratum
)
3130 t
= current_target
.beneath
;
3132 t
= find_default_run_target (NULL
);
3134 for (; t
!= NULL
; t
= t
->beneath
)
3136 if (t
->to_info_proc
!= NULL
)
3138 t
->to_info_proc (t
, args
, what
);
3141 fprintf_unfiltered (gdb_stdlog
,
3142 "target_info_proc (\"%s\", %d)\n", args
, what
);
3152 find_default_supports_disable_randomization (struct target_ops
*self
)
3154 struct target_ops
*t
;
3156 t
= find_default_run_target (NULL
);
3157 if (t
&& t
->to_supports_disable_randomization
)
3158 return (t
->to_supports_disable_randomization
) (t
);
3163 target_supports_disable_randomization (void)
3165 struct target_ops
*t
;
3167 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3168 if (t
->to_supports_disable_randomization
)
3169 return t
->to_supports_disable_randomization (t
);
3175 target_get_osdata (const char *type
)
3177 struct target_ops
*t
;
3179 /* If we're already connected to something that can get us OS
3180 related data, use it. Otherwise, try using the native
3182 if (current_target
.to_stratum
>= process_stratum
)
3183 t
= current_target
.beneath
;
3185 t
= find_default_run_target ("get OS data");
3190 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3193 /* Determine the current address space of thread PTID. */
3195 struct address_space
*
3196 target_thread_address_space (ptid_t ptid
)
3198 struct address_space
*aspace
;
3199 struct inferior
*inf
;
3200 struct target_ops
*t
;
3202 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3204 if (t
->to_thread_address_space
!= NULL
)
3206 aspace
= t
->to_thread_address_space (t
, ptid
);
3207 gdb_assert (aspace
);
3210 fprintf_unfiltered (gdb_stdlog
,
3211 "target_thread_address_space (%s) = %d\n",
3212 target_pid_to_str (ptid
),
3213 address_space_num (aspace
));
3218 /* Fall-back to the "main" address space of the inferior. */
3219 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3221 if (inf
== NULL
|| inf
->aspace
== NULL
)
3222 internal_error (__FILE__
, __LINE__
,
3223 _("Can't determine the current "
3224 "address space of thread %s\n"),
3225 target_pid_to_str (ptid
));
3231 /* Target file operations. */
3233 static struct target_ops
*
3234 default_fileio_target (void)
3236 /* If we're already connected to something that can perform
3237 file I/O, use it. Otherwise, try using the native target. */
3238 if (current_target
.to_stratum
>= process_stratum
)
3239 return current_target
.beneath
;
3241 return find_default_run_target ("file I/O");
3244 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3245 target file descriptor, or -1 if an error occurs (and set
3248 target_fileio_open (const char *filename
, int flags
, int mode
,
3251 struct target_ops
*t
;
3253 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3255 if (t
->to_fileio_open
!= NULL
)
3257 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3260 fprintf_unfiltered (gdb_stdlog
,
3261 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3262 filename
, flags
, mode
,
3263 fd
, fd
!= -1 ? 0 : *target_errno
);
3268 *target_errno
= FILEIO_ENOSYS
;
3272 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3273 Return the number of bytes written, or -1 if an error occurs
3274 (and set *TARGET_ERRNO). */
3276 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3277 ULONGEST offset
, int *target_errno
)
3279 struct target_ops
*t
;
3281 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3283 if (t
->to_fileio_pwrite
!= NULL
)
3285 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3289 fprintf_unfiltered (gdb_stdlog
,
3290 "target_fileio_pwrite (%d,...,%d,%s) "
3292 fd
, len
, pulongest (offset
),
3293 ret
, ret
!= -1 ? 0 : *target_errno
);
3298 *target_errno
= FILEIO_ENOSYS
;
3302 /* Read up to LEN bytes FD on the target into READ_BUF.
3303 Return the number of bytes read, or -1 if an error occurs
3304 (and set *TARGET_ERRNO). */
3306 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3307 ULONGEST offset
, int *target_errno
)
3309 struct target_ops
*t
;
3311 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3313 if (t
->to_fileio_pread
!= NULL
)
3315 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3319 fprintf_unfiltered (gdb_stdlog
,
3320 "target_fileio_pread (%d,...,%d,%s) "
3322 fd
, len
, pulongest (offset
),
3323 ret
, ret
!= -1 ? 0 : *target_errno
);
3328 *target_errno
= FILEIO_ENOSYS
;
3332 /* Close FD on the target. Return 0, or -1 if an error occurs
3333 (and set *TARGET_ERRNO). */
3335 target_fileio_close (int fd
, int *target_errno
)
3337 struct target_ops
*t
;
3339 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3341 if (t
->to_fileio_close
!= NULL
)
3343 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3346 fprintf_unfiltered (gdb_stdlog
,
3347 "target_fileio_close (%d) = %d (%d)\n",
3348 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3353 *target_errno
= FILEIO_ENOSYS
;
3357 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3358 occurs (and set *TARGET_ERRNO). */
3360 target_fileio_unlink (const char *filename
, int *target_errno
)
3362 struct target_ops
*t
;
3364 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3366 if (t
->to_fileio_unlink
!= NULL
)
3368 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3371 fprintf_unfiltered (gdb_stdlog
,
3372 "target_fileio_unlink (%s) = %d (%d)\n",
3373 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3378 *target_errno
= FILEIO_ENOSYS
;
3382 /* Read value of symbolic link FILENAME on the target. Return a
3383 null-terminated string allocated via xmalloc, or NULL if an error
3384 occurs (and set *TARGET_ERRNO). */
3386 target_fileio_readlink (const char *filename
, int *target_errno
)
3388 struct target_ops
*t
;
3390 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3392 if (t
->to_fileio_readlink
!= NULL
)
3394 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3397 fprintf_unfiltered (gdb_stdlog
,
3398 "target_fileio_readlink (%s) = %s (%d)\n",
3399 filename
, ret
? ret
: "(nil)",
3400 ret
? 0 : *target_errno
);
3405 *target_errno
= FILEIO_ENOSYS
;
3410 target_fileio_close_cleanup (void *opaque
)
3412 int fd
= *(int *) opaque
;
3415 target_fileio_close (fd
, &target_errno
);
3418 /* Read target file FILENAME. Store the result in *BUF_P and
3419 return the size of the transferred data. PADDING additional bytes are
3420 available in *BUF_P. This is a helper function for
3421 target_fileio_read_alloc; see the declaration of that function for more
3425 target_fileio_read_alloc_1 (const char *filename
,
3426 gdb_byte
**buf_p
, int padding
)
3428 struct cleanup
*close_cleanup
;
3429 size_t buf_alloc
, buf_pos
;
3435 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3439 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3441 /* Start by reading up to 4K at a time. The target will throttle
3442 this number down if necessary. */
3444 buf
= xmalloc (buf_alloc
);
3448 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3449 buf_alloc
- buf_pos
- padding
, buf_pos
,
3453 /* An error occurred. */
3454 do_cleanups (close_cleanup
);
3460 /* Read all there was. */
3461 do_cleanups (close_cleanup
);
3471 /* If the buffer is filling up, expand it. */
3472 if (buf_alloc
< buf_pos
* 2)
3475 buf
= xrealloc (buf
, buf_alloc
);
3482 /* Read target file FILENAME. Store the result in *BUF_P and return
3483 the size of the transferred data. See the declaration in "target.h"
3484 function for more information about the return value. */
3487 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3489 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3492 /* Read target file FILENAME. The result is NUL-terminated and
3493 returned as a string, allocated using xmalloc. If an error occurs
3494 or the transfer is unsupported, NULL is returned. Empty objects
3495 are returned as allocated but empty strings. A warning is issued
3496 if the result contains any embedded NUL bytes. */
3499 target_fileio_read_stralloc (const char *filename
)
3503 LONGEST i
, transferred
;
3505 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3506 bufstr
= (char *) buffer
;
3508 if (transferred
< 0)
3511 if (transferred
== 0)
3512 return xstrdup ("");
3514 bufstr
[transferred
] = 0;
3516 /* Check for embedded NUL bytes; but allow trailing NULs. */
3517 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3520 warning (_("target file %s "
3521 "contained unexpected null characters"),
3531 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3532 CORE_ADDR addr
, int len
)
3534 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3538 default_watchpoint_addr_within_range (struct target_ops
*target
,
3540 CORE_ADDR start
, int length
)
3542 return addr
>= start
&& addr
< start
+ length
;
3545 static struct gdbarch
*
3546 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3548 return target_gdbarch ();
3558 return_minus_one (void)
3570 * Find the next target down the stack from the specified target.
3574 find_target_beneath (struct target_ops
*t
)
3582 find_target_at (enum strata stratum
)
3584 struct target_ops
*t
;
3586 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3587 if (t
->to_stratum
== stratum
)
3594 /* The inferior process has died. Long live the inferior! */
3597 generic_mourn_inferior (void)
3601 ptid
= inferior_ptid
;
3602 inferior_ptid
= null_ptid
;
3604 /* Mark breakpoints uninserted in case something tries to delete a
3605 breakpoint while we delete the inferior's threads (which would
3606 fail, since the inferior is long gone). */
3607 mark_breakpoints_out ();
3609 if (!ptid_equal (ptid
, null_ptid
))
3611 int pid
= ptid_get_pid (ptid
);
3612 exit_inferior (pid
);
3615 /* Note this wipes step-resume breakpoints, so needs to be done
3616 after exit_inferior, which ends up referencing the step-resume
3617 breakpoints through clear_thread_inferior_resources. */
3618 breakpoint_init_inferior (inf_exited
);
3620 registers_changed ();
3622 reopen_exec_file ();
3623 reinit_frame_cache ();
3625 if (deprecated_detach_hook
)
3626 deprecated_detach_hook ();
3629 /* Convert a normal process ID to a string. Returns the string in a
3633 normal_pid_to_str (ptid_t ptid
)
3635 static char buf
[32];
3637 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3642 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3644 return normal_pid_to_str (ptid
);
3647 /* Error-catcher for target_find_memory_regions. */
3649 dummy_find_memory_regions (struct target_ops
*self
,
3650 find_memory_region_ftype ignore1
, void *ignore2
)
3652 error (_("Command not implemented for this target."));
3656 /* Error-catcher for target_make_corefile_notes. */
3658 dummy_make_corefile_notes (struct target_ops
*self
,
3659 bfd
*ignore1
, int *ignore2
)
3661 error (_("Command not implemented for this target."));
3665 /* Set up the handful of non-empty slots needed by the dummy target
3669 init_dummy_target (void)
3671 dummy_target
.to_shortname
= "None";
3672 dummy_target
.to_longname
= "None";
3673 dummy_target
.to_doc
= "";
3674 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3675 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3676 dummy_target
.to_supports_disable_randomization
3677 = find_default_supports_disable_randomization
;
3678 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3679 dummy_target
.to_stratum
= dummy_stratum
;
3680 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3681 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3682 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3683 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3684 dummy_target
.to_has_execution
3685 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3686 dummy_target
.to_magic
= OPS_MAGIC
;
3688 install_dummy_methods (&dummy_target
);
3692 debug_to_open (char *args
, int from_tty
)
3694 debug_target
.to_open (args
, from_tty
);
3696 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3700 target_close (struct target_ops
*targ
)
3702 gdb_assert (!target_is_pushed (targ
));
3704 if (targ
->to_xclose
!= NULL
)
3705 targ
->to_xclose (targ
);
3706 else if (targ
->to_close
!= NULL
)
3707 targ
->to_close (targ
);
3710 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3714 target_attach (char *args
, int from_tty
)
3716 current_target
.to_attach (¤t_target
, args
, from_tty
);
3718 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3723 target_thread_alive (ptid_t ptid
)
3725 struct target_ops
*t
;
3727 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3729 if (t
->to_thread_alive
!= NULL
)
3733 retval
= t
->to_thread_alive (t
, ptid
);
3735 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3736 ptid_get_pid (ptid
), retval
);
3746 target_find_new_threads (void)
3748 struct target_ops
*t
;
3750 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3752 if (t
->to_find_new_threads
!= NULL
)
3754 t
->to_find_new_threads (t
);
3756 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3764 target_stop (ptid_t ptid
)
3768 warning (_("May not interrupt or stop the target, ignoring attempt"));
3772 (*current_target
.to_stop
) (¤t_target
, ptid
);
3776 debug_to_post_attach (struct target_ops
*self
, int pid
)
3778 debug_target
.to_post_attach (&debug_target
, pid
);
3780 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3783 /* Concatenate ELEM to LIST, a comma separate list, and return the
3784 result. The LIST incoming argument is released. */
3787 str_comma_list_concat_elem (char *list
, const char *elem
)
3790 return xstrdup (elem
);
3792 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3795 /* Helper for target_options_to_string. If OPT is present in
3796 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3797 Returns the new resulting string. OPT is removed from
3801 do_option (int *target_options
, char *ret
,
3802 int opt
, char *opt_str
)
3804 if ((*target_options
& opt
) != 0)
3806 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3807 *target_options
&= ~opt
;
3814 target_options_to_string (int target_options
)
3818 #define DO_TARG_OPTION(OPT) \
3819 ret = do_option (&target_options, ret, OPT, #OPT)
3821 DO_TARG_OPTION (TARGET_WNOHANG
);
3823 if (target_options
!= 0)
3824 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3832 debug_print_register (const char * func
,
3833 struct regcache
*regcache
, int regno
)
3835 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3837 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3838 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3839 && gdbarch_register_name (gdbarch
, regno
) != NULL
3840 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3841 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3842 gdbarch_register_name (gdbarch
, regno
));
3844 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3845 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3847 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3848 int i
, size
= register_size (gdbarch
, regno
);
3849 gdb_byte buf
[MAX_REGISTER_SIZE
];
3851 regcache_raw_collect (regcache
, regno
, buf
);
3852 fprintf_unfiltered (gdb_stdlog
, " = ");
3853 for (i
= 0; i
< size
; i
++)
3855 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3857 if (size
<= sizeof (LONGEST
))
3859 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3861 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3862 core_addr_to_string_nz (val
), plongest (val
));
3865 fprintf_unfiltered (gdb_stdlog
, "\n");
3869 target_fetch_registers (struct regcache
*regcache
, int regno
)
3871 struct target_ops
*t
;
3873 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3875 if (t
->to_fetch_registers
!= NULL
)
3877 t
->to_fetch_registers (t
, regcache
, regno
);
3879 debug_print_register ("target_fetch_registers", regcache
, regno
);
3886 target_store_registers (struct regcache
*regcache
, int regno
)
3888 struct target_ops
*t
;
3890 if (!may_write_registers
)
3891 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3893 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3896 debug_print_register ("target_store_registers", regcache
, regno
);
3901 target_core_of_thread (ptid_t ptid
)
3903 struct target_ops
*t
;
3905 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3907 if (t
->to_core_of_thread
!= NULL
)
3909 int retval
= t
->to_core_of_thread (t
, ptid
);
3912 fprintf_unfiltered (gdb_stdlog
,
3913 "target_core_of_thread (%d) = %d\n",
3914 ptid_get_pid (ptid
), retval
);
3923 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3925 struct target_ops
*t
;
3927 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3929 if (t
->to_verify_memory
!= NULL
)
3931 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3934 fprintf_unfiltered (gdb_stdlog
,
3935 "target_verify_memory (%s, %s) = %d\n",
3936 paddress (target_gdbarch (), memaddr
),
3946 /* The documentation for this function is in its prototype declaration in
3950 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3952 struct target_ops
*t
;
3954 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3955 if (t
->to_insert_mask_watchpoint
!= NULL
)
3959 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
3962 fprintf_unfiltered (gdb_stdlog
, "\
3963 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3964 core_addr_to_string (addr
),
3965 core_addr_to_string (mask
), rw
, ret
);
3973 /* The documentation for this function is in its prototype declaration in
3977 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3979 struct target_ops
*t
;
3981 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3982 if (t
->to_remove_mask_watchpoint
!= NULL
)
3986 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
3989 fprintf_unfiltered (gdb_stdlog
, "\
3990 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3991 core_addr_to_string (addr
),
3992 core_addr_to_string (mask
), rw
, ret
);
4000 /* The documentation for this function is in its prototype declaration
4004 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4006 struct target_ops
*t
;
4008 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4009 if (t
->to_masked_watch_num_registers
!= NULL
)
4010 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4015 /* The documentation for this function is in its prototype declaration
4019 target_ranged_break_num_registers (void)
4021 struct target_ops
*t
;
4023 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4024 if (t
->to_ranged_break_num_registers
!= NULL
)
4025 return t
->to_ranged_break_num_registers (t
);
4032 struct btrace_target_info
*
4033 target_enable_btrace (ptid_t ptid
)
4035 struct target_ops
*t
;
4037 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4038 if (t
->to_enable_btrace
!= NULL
)
4039 return t
->to_enable_btrace (t
, ptid
);
4048 target_disable_btrace (struct btrace_target_info
*btinfo
)
4050 struct target_ops
*t
;
4052 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4053 if (t
->to_disable_btrace
!= NULL
)
4055 t
->to_disable_btrace (t
, btinfo
);
4065 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4067 struct target_ops
*t
;
4069 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4070 if (t
->to_teardown_btrace
!= NULL
)
4072 t
->to_teardown_btrace (t
, btinfo
);
4082 target_read_btrace (VEC (btrace_block_s
) **btrace
,
4083 struct btrace_target_info
*btinfo
,
4084 enum btrace_read_type type
)
4086 struct target_ops
*t
;
4088 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4089 if (t
->to_read_btrace
!= NULL
)
4090 return t
->to_read_btrace (t
, btrace
, btinfo
, type
);
4093 return BTRACE_ERR_NOT_SUPPORTED
;
4099 target_stop_recording (void)
4101 struct target_ops
*t
;
4103 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4104 if (t
->to_stop_recording
!= NULL
)
4106 t
->to_stop_recording (t
);
4110 /* This is optional. */
4116 target_info_record (void)
4118 struct target_ops
*t
;
4120 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4121 if (t
->to_info_record
!= NULL
)
4123 t
->to_info_record (t
);
4133 target_save_record (const char *filename
)
4135 struct target_ops
*t
;
4137 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4138 if (t
->to_save_record
!= NULL
)
4140 t
->to_save_record (t
, filename
);
4150 target_supports_delete_record (void)
4152 struct target_ops
*t
;
4154 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4155 if (t
->to_delete_record
!= NULL
)
4164 target_delete_record (void)
4166 struct target_ops
*t
;
4168 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4169 if (t
->to_delete_record
!= NULL
)
4171 t
->to_delete_record (t
);
4181 target_record_is_replaying (void)
4183 struct target_ops
*t
;
4185 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4186 if (t
->to_record_is_replaying
!= NULL
)
4187 return t
->to_record_is_replaying (t
);
4195 target_goto_record_begin (void)
4197 struct target_ops
*t
;
4199 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4200 if (t
->to_goto_record_begin
!= NULL
)
4202 t
->to_goto_record_begin (t
);
4212 target_goto_record_end (void)
4214 struct target_ops
*t
;
4216 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4217 if (t
->to_goto_record_end
!= NULL
)
4219 t
->to_goto_record_end (t
);
4229 target_goto_record (ULONGEST insn
)
4231 struct target_ops
*t
;
4233 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4234 if (t
->to_goto_record
!= NULL
)
4236 t
->to_goto_record (t
, insn
);
4246 target_insn_history (int size
, int flags
)
4248 struct target_ops
*t
;
4250 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4251 if (t
->to_insn_history
!= NULL
)
4253 t
->to_insn_history (t
, size
, flags
);
4263 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4265 struct target_ops
*t
;
4267 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4268 if (t
->to_insn_history_from
!= NULL
)
4270 t
->to_insn_history_from (t
, from
, size
, flags
);
4280 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4282 struct target_ops
*t
;
4284 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4285 if (t
->to_insn_history_range
!= NULL
)
4287 t
->to_insn_history_range (t
, begin
, end
, flags
);
4297 target_call_history (int size
, int flags
)
4299 struct target_ops
*t
;
4301 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4302 if (t
->to_call_history
!= NULL
)
4304 t
->to_call_history (t
, size
, flags
);
4314 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4316 struct target_ops
*t
;
4318 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4319 if (t
->to_call_history_from
!= NULL
)
4321 t
->to_call_history_from (t
, begin
, size
, flags
);
4331 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4333 struct target_ops
*t
;
4335 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4336 if (t
->to_call_history_range
!= NULL
)
4338 t
->to_call_history_range (t
, begin
, end
, flags
);
4346 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
4348 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
4350 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4355 const struct frame_unwind
*
4356 target_get_unwinder (void)
4358 struct target_ops
*t
;
4360 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4361 if (t
->to_get_unwinder
!= NULL
)
4362 return t
->to_get_unwinder
;
4369 const struct frame_unwind
*
4370 target_get_tailcall_unwinder (void)
4372 struct target_ops
*t
;
4374 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4375 if (t
->to_get_tailcall_unwinder
!= NULL
)
4376 return t
->to_get_tailcall_unwinder
;
4384 forward_target_decr_pc_after_break (struct target_ops
*ops
,
4385 struct gdbarch
*gdbarch
)
4387 for (; ops
!= NULL
; ops
= ops
->beneath
)
4388 if (ops
->to_decr_pc_after_break
!= NULL
)
4389 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
4391 return gdbarch_decr_pc_after_break (gdbarch
);
4397 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
4399 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
4403 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4404 int write
, struct mem_attrib
*attrib
,
4405 struct target_ops
*target
)
4409 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4412 fprintf_unfiltered (gdb_stdlog
,
4413 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4414 paddress (target_gdbarch (), memaddr
), len
,
4415 write
? "write" : "read", retval
);
4421 fputs_unfiltered (", bytes =", gdb_stdlog
);
4422 for (i
= 0; i
< retval
; i
++)
4424 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4426 if (targetdebug
< 2 && i
> 0)
4428 fprintf_unfiltered (gdb_stdlog
, " ...");
4431 fprintf_unfiltered (gdb_stdlog
, "\n");
4434 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4438 fputc_unfiltered ('\n', gdb_stdlog
);
4444 debug_to_files_info (struct target_ops
*target
)
4446 debug_target
.to_files_info (target
);
4448 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4452 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4453 struct bp_target_info
*bp_tgt
)
4457 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4459 fprintf_unfiltered (gdb_stdlog
,
4460 "target_insert_breakpoint (%s, xxx) = %ld\n",
4461 core_addr_to_string (bp_tgt
->placed_address
),
4462 (unsigned long) retval
);
4467 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4468 struct bp_target_info
*bp_tgt
)
4472 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4474 fprintf_unfiltered (gdb_stdlog
,
4475 "target_remove_breakpoint (%s, xxx) = %ld\n",
4476 core_addr_to_string (bp_tgt
->placed_address
),
4477 (unsigned long) retval
);
4482 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4483 int type
, int cnt
, int from_tty
)
4487 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4488 type
, cnt
, from_tty
);
4490 fprintf_unfiltered (gdb_stdlog
,
4491 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4492 (unsigned long) type
,
4493 (unsigned long) cnt
,
4494 (unsigned long) from_tty
,
4495 (unsigned long) retval
);
4500 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4501 CORE_ADDR addr
, int len
)
4505 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4508 fprintf_unfiltered (gdb_stdlog
,
4509 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4510 core_addr_to_string (addr
), (unsigned long) len
,
4511 core_addr_to_string (retval
));
4516 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4517 CORE_ADDR addr
, int len
, int rw
,
4518 struct expression
*cond
)
4522 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4526 fprintf_unfiltered (gdb_stdlog
,
4527 "target_can_accel_watchpoint_condition "
4528 "(%s, %d, %d, %s) = %ld\n",
4529 core_addr_to_string (addr
), len
, rw
,
4530 host_address_to_string (cond
), (unsigned long) retval
);
4535 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4539 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4541 fprintf_unfiltered (gdb_stdlog
,
4542 "target_stopped_by_watchpoint () = %ld\n",
4543 (unsigned long) retval
);
4548 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4552 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4554 fprintf_unfiltered (gdb_stdlog
,
4555 "target_stopped_data_address ([%s]) = %ld\n",
4556 core_addr_to_string (*addr
),
4557 (unsigned long)retval
);
4562 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4564 CORE_ADDR start
, int length
)
4568 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4571 fprintf_filtered (gdb_stdlog
,
4572 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4573 core_addr_to_string (addr
), core_addr_to_string (start
),
4579 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4580 struct gdbarch
*gdbarch
,
4581 struct bp_target_info
*bp_tgt
)
4585 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4588 fprintf_unfiltered (gdb_stdlog
,
4589 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4590 core_addr_to_string (bp_tgt
->placed_address
),
4591 (unsigned long) retval
);
4596 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4597 struct gdbarch
*gdbarch
,
4598 struct bp_target_info
*bp_tgt
)
4602 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4605 fprintf_unfiltered (gdb_stdlog
,
4606 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4607 core_addr_to_string (bp_tgt
->placed_address
),
4608 (unsigned long) retval
);
4613 debug_to_insert_watchpoint (struct target_ops
*self
,
4614 CORE_ADDR addr
, int len
, int type
,
4615 struct expression
*cond
)
4619 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4620 addr
, len
, type
, cond
);
4622 fprintf_unfiltered (gdb_stdlog
,
4623 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4624 core_addr_to_string (addr
), len
, type
,
4625 host_address_to_string (cond
), (unsigned long) retval
);
4630 debug_to_remove_watchpoint (struct target_ops
*self
,
4631 CORE_ADDR addr
, int len
, int type
,
4632 struct expression
*cond
)
4636 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4637 addr
, len
, type
, cond
);
4639 fprintf_unfiltered (gdb_stdlog
,
4640 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4641 core_addr_to_string (addr
), len
, type
,
4642 host_address_to_string (cond
), (unsigned long) retval
);
4647 debug_to_terminal_init (struct target_ops
*self
)
4649 debug_target
.to_terminal_init (&debug_target
);
4651 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4655 debug_to_terminal_inferior (struct target_ops
*self
)
4657 debug_target
.to_terminal_inferior (&debug_target
);
4659 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4663 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4665 debug_target
.to_terminal_ours_for_output (&debug_target
);
4667 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4671 debug_to_terminal_ours (struct target_ops
*self
)
4673 debug_target
.to_terminal_ours (&debug_target
);
4675 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4679 debug_to_terminal_save_ours (struct target_ops
*self
)
4681 debug_target
.to_terminal_save_ours (&debug_target
);
4683 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4687 debug_to_terminal_info (struct target_ops
*self
,
4688 const char *arg
, int from_tty
)
4690 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4692 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4697 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4699 debug_target
.to_load (&debug_target
, args
, from_tty
);
4701 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4705 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4707 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4709 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4710 ptid_get_pid (ptid
));
4714 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4718 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4720 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4727 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4731 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4733 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4740 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4744 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4746 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4753 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4757 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4759 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4766 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4770 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4772 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4779 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4783 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4785 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4792 debug_to_has_exited (struct target_ops
*self
,
4793 int pid
, int wait_status
, int *exit_status
)
4797 has_exited
= debug_target
.to_has_exited (&debug_target
,
4798 pid
, wait_status
, exit_status
);
4800 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4801 pid
, wait_status
, *exit_status
, has_exited
);
4807 debug_to_can_run (struct target_ops
*self
)
4811 retval
= debug_target
.to_can_run (&debug_target
);
4813 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4818 static struct gdbarch
*
4819 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4821 struct gdbarch
*retval
;
4823 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4825 fprintf_unfiltered (gdb_stdlog
,
4826 "target_thread_architecture (%s) = %s [%s]\n",
4827 target_pid_to_str (ptid
),
4828 host_address_to_string (retval
),
4829 gdbarch_bfd_arch_info (retval
)->printable_name
);
4834 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4836 debug_target
.to_stop (&debug_target
, ptid
);
4838 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4839 target_pid_to_str (ptid
));
4843 debug_to_rcmd (struct target_ops
*self
, char *command
,
4844 struct ui_file
*outbuf
)
4846 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4847 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4851 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4855 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4857 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4864 setup_target_debug (void)
4866 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4868 current_target
.to_open
= debug_to_open
;
4869 current_target
.to_post_attach
= debug_to_post_attach
;
4870 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4871 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4872 current_target
.to_files_info
= debug_to_files_info
;
4873 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4874 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4875 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4876 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4877 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4878 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4879 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4880 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4881 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4882 current_target
.to_watchpoint_addr_within_range
4883 = debug_to_watchpoint_addr_within_range
;
4884 current_target
.to_region_ok_for_hw_watchpoint
4885 = debug_to_region_ok_for_hw_watchpoint
;
4886 current_target
.to_can_accel_watchpoint_condition
4887 = debug_to_can_accel_watchpoint_condition
;
4888 current_target
.to_terminal_init
= debug_to_terminal_init
;
4889 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4890 current_target
.to_terminal_ours_for_output
4891 = debug_to_terminal_ours_for_output
;
4892 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4893 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4894 current_target
.to_terminal_info
= debug_to_terminal_info
;
4895 current_target
.to_load
= debug_to_load
;
4896 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4897 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4898 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4899 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4900 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4901 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4902 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4903 current_target
.to_has_exited
= debug_to_has_exited
;
4904 current_target
.to_can_run
= debug_to_can_run
;
4905 current_target
.to_stop
= debug_to_stop
;
4906 current_target
.to_rcmd
= debug_to_rcmd
;
4907 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4908 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4912 static char targ_desc
[] =
4913 "Names of targets and files being debugged.\nShows the entire \
4914 stack of targets currently in use (including the exec-file,\n\
4915 core-file, and process, if any), as well as the symbol file name.";
4918 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4920 error (_("\"monitor\" command not supported by this target."));
4924 do_monitor_command (char *cmd
,
4927 target_rcmd (cmd
, gdb_stdtarg
);
4930 /* Print the name of each layers of our target stack. */
4933 maintenance_print_target_stack (char *cmd
, int from_tty
)
4935 struct target_ops
*t
;
4937 printf_filtered (_("The current target stack is:\n"));
4939 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4941 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4945 /* Controls if async mode is permitted. */
4946 int target_async_permitted
= 0;
4948 /* The set command writes to this variable. If the inferior is
4949 executing, target_async_permitted is *not* updated. */
4950 static int target_async_permitted_1
= 0;
4953 set_target_async_command (char *args
, int from_tty
,
4954 struct cmd_list_element
*c
)
4956 if (have_live_inferiors ())
4958 target_async_permitted_1
= target_async_permitted
;
4959 error (_("Cannot change this setting while the inferior is running."));
4962 target_async_permitted
= target_async_permitted_1
;
4966 show_target_async_command (struct ui_file
*file
, int from_tty
,
4967 struct cmd_list_element
*c
,
4970 fprintf_filtered (file
,
4971 _("Controlling the inferior in "
4972 "asynchronous mode is %s.\n"), value
);
4975 /* Temporary copies of permission settings. */
4977 static int may_write_registers_1
= 1;
4978 static int may_write_memory_1
= 1;
4979 static int may_insert_breakpoints_1
= 1;
4980 static int may_insert_tracepoints_1
= 1;
4981 static int may_insert_fast_tracepoints_1
= 1;
4982 static int may_stop_1
= 1;
4984 /* Make the user-set values match the real values again. */
4987 update_target_permissions (void)
4989 may_write_registers_1
= may_write_registers
;
4990 may_write_memory_1
= may_write_memory
;
4991 may_insert_breakpoints_1
= may_insert_breakpoints
;
4992 may_insert_tracepoints_1
= may_insert_tracepoints
;
4993 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4994 may_stop_1
= may_stop
;
4997 /* The one function handles (most of) the permission flags in the same
5001 set_target_permissions (char *args
, int from_tty
,
5002 struct cmd_list_element
*c
)
5004 if (target_has_execution
)
5006 update_target_permissions ();
5007 error (_("Cannot change this setting while the inferior is running."));
5010 /* Make the real values match the user-changed values. */
5011 may_write_registers
= may_write_registers_1
;
5012 may_insert_breakpoints
= may_insert_breakpoints_1
;
5013 may_insert_tracepoints
= may_insert_tracepoints_1
;
5014 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
5015 may_stop
= may_stop_1
;
5016 update_observer_mode ();
5019 /* Set memory write permission independently of observer mode. */
5022 set_write_memory_permission (char *args
, int from_tty
,
5023 struct cmd_list_element
*c
)
5025 /* Make the real values match the user-changed values. */
5026 may_write_memory
= may_write_memory_1
;
5027 update_observer_mode ();
5032 initialize_targets (void)
5034 init_dummy_target ();
5035 push_target (&dummy_target
);
5037 add_info ("target", target_info
, targ_desc
);
5038 add_info ("files", target_info
, targ_desc
);
5040 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
5041 Set target debugging."), _("\
5042 Show target debugging."), _("\
5043 When non-zero, target debugging is enabled. Higher numbers are more\n\
5044 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
5048 &setdebuglist
, &showdebuglist
);
5050 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
5051 &trust_readonly
, _("\
5052 Set mode for reading from readonly sections."), _("\
5053 Show mode for reading from readonly sections."), _("\
5054 When this mode is on, memory reads from readonly sections (such as .text)\n\
5055 will be read from the object file instead of from the target. This will\n\
5056 result in significant performance improvement for remote targets."),
5058 show_trust_readonly
,
5059 &setlist
, &showlist
);
5061 add_com ("monitor", class_obscure
, do_monitor_command
,
5062 _("Send a command to the remote monitor (remote targets only)."));
5064 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5065 _("Print the name of each layer of the internal target stack."),
5066 &maintenanceprintlist
);
5068 add_setshow_boolean_cmd ("target-async", no_class
,
5069 &target_async_permitted_1
, _("\
5070 Set whether gdb controls the inferior in asynchronous mode."), _("\
5071 Show whether gdb controls the inferior in asynchronous mode."), _("\
5072 Tells gdb whether to control the inferior in asynchronous mode."),
5073 set_target_async_command
,
5074 show_target_async_command
,
5078 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5079 &may_write_registers_1
, _("\
5080 Set permission to write into registers."), _("\
5081 Show permission to write into registers."), _("\
5082 When this permission is on, GDB may write into the target's registers.\n\
5083 Otherwise, any sort of write attempt will result in an error."),
5084 set_target_permissions
, NULL
,
5085 &setlist
, &showlist
);
5087 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5088 &may_write_memory_1
, _("\
5089 Set permission to write into target memory."), _("\
5090 Show permission to write into target memory."), _("\
5091 When this permission is on, GDB may write into the target's memory.\n\
5092 Otherwise, any sort of write attempt will result in an error."),
5093 set_write_memory_permission
, NULL
,
5094 &setlist
, &showlist
);
5096 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5097 &may_insert_breakpoints_1
, _("\
5098 Set permission to insert breakpoints in the target."), _("\
5099 Show permission to insert breakpoints in the target."), _("\
5100 When this permission is on, GDB may insert breakpoints in the program.\n\
5101 Otherwise, any sort of insertion attempt will result in an error."),
5102 set_target_permissions
, NULL
,
5103 &setlist
, &showlist
);
5105 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5106 &may_insert_tracepoints_1
, _("\
5107 Set permission to insert tracepoints in the target."), _("\
5108 Show permission to insert tracepoints in the target."), _("\
5109 When this permission is on, GDB may insert tracepoints in the program.\n\
5110 Otherwise, any sort of insertion attempt will result in an error."),
5111 set_target_permissions
, NULL
,
5112 &setlist
, &showlist
);
5114 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5115 &may_insert_fast_tracepoints_1
, _("\
5116 Set permission to insert fast tracepoints in the target."), _("\
5117 Show permission to insert fast tracepoints in the target."), _("\
5118 When this permission is on, GDB may insert fast tracepoints.\n\
5119 Otherwise, any sort of insertion attempt will result in an error."),
5120 set_target_permissions
, NULL
,
5121 &setlist
, &showlist
);
5123 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5125 Set permission to interrupt or signal the target."), _("\
5126 Show permission to interrupt or signal the target."), _("\
5127 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5128 Otherwise, any attempt to interrupt or stop will be ignored."),
5129 set_target_permissions
, NULL
,
5130 &setlist
, &showlist
);