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 void *return_null (void);
71 void target_ignore (void);
73 static void target_command (char *, int);
75 static struct target_ops
*find_default_run_target (char *);
77 static target_xfer_partial_ftype default_xfer_partial
;
79 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
82 static int dummy_find_memory_regions (struct target_ops
*self
,
83 find_memory_region_ftype ignore1
,
86 static char *dummy_make_corefile_notes (struct target_ops
*self
,
87 bfd
*ignore1
, int *ignore2
);
89 static int find_default_can_async_p (struct target_ops
*ignore
);
91 static int find_default_is_async_p (struct target_ops
*ignore
);
93 static enum exec_direction_kind default_execution_direction
94 (struct target_ops
*self
);
96 #include "target-delegates.c"
98 static void init_dummy_target (void);
100 static struct target_ops debug_target
;
102 static void debug_to_open (char *, int);
104 static void debug_to_prepare_to_store (struct target_ops
*self
,
107 static void debug_to_files_info (struct target_ops
*);
109 static int debug_to_insert_breakpoint (struct target_ops
*, struct gdbarch
*,
110 struct bp_target_info
*);
112 static int debug_to_remove_breakpoint (struct target_ops
*, struct gdbarch
*,
113 struct bp_target_info
*);
115 static int debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
118 static int debug_to_insert_hw_breakpoint (struct target_ops
*self
,
120 struct bp_target_info
*);
122 static int debug_to_remove_hw_breakpoint (struct target_ops
*self
,
124 struct bp_target_info
*);
126 static int debug_to_insert_watchpoint (struct target_ops
*self
,
128 struct expression
*);
130 static int debug_to_remove_watchpoint (struct target_ops
*self
,
132 struct expression
*);
134 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
136 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
137 CORE_ADDR
, CORE_ADDR
, int);
139 static int debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
142 static int debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
144 struct expression
*);
146 static void debug_to_terminal_init (struct target_ops
*self
);
148 static void debug_to_terminal_inferior (struct target_ops
*self
);
150 static void debug_to_terminal_ours_for_output (struct target_ops
*self
);
152 static void debug_to_terminal_save_ours (struct target_ops
*self
);
154 static void debug_to_terminal_ours (struct target_ops
*self
);
156 static void debug_to_load (struct target_ops
*self
, char *, int);
158 static int debug_to_can_run (struct target_ops
*self
);
160 static void debug_to_stop (struct target_ops
*self
, ptid_t
);
162 /* Pointer to array of target architecture structures; the size of the
163 array; the current index into the array; the allocated size of the
165 struct target_ops
**target_structs
;
166 unsigned target_struct_size
;
167 unsigned target_struct_allocsize
;
168 #define DEFAULT_ALLOCSIZE 10
170 /* The initial current target, so that there is always a semi-valid
173 static struct target_ops dummy_target
;
175 /* Top of target stack. */
177 static struct target_ops
*target_stack
;
179 /* The target structure we are currently using to talk to a process
180 or file or whatever "inferior" we have. */
182 struct target_ops current_target
;
184 /* Command list for target. */
186 static struct cmd_list_element
*targetlist
= NULL
;
188 /* Nonzero if we should trust readonly sections from the
189 executable when reading memory. */
191 static int trust_readonly
= 0;
193 /* Nonzero if we should show true memory content including
194 memory breakpoint inserted by gdb. */
196 static int show_memory_breakpoints
= 0;
198 /* These globals control whether GDB attempts to perform these
199 operations; they are useful for targets that need to prevent
200 inadvertant disruption, such as in non-stop mode. */
202 int may_write_registers
= 1;
204 int may_write_memory
= 1;
206 int may_insert_breakpoints
= 1;
208 int may_insert_tracepoints
= 1;
210 int may_insert_fast_tracepoints
= 1;
214 /* Non-zero if we want to see trace of target level stuff. */
216 static unsigned int targetdebug
= 0;
218 show_targetdebug (struct ui_file
*file
, int from_tty
,
219 struct cmd_list_element
*c
, const char *value
)
221 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
224 static void setup_target_debug (void);
226 /* The user just typed 'target' without the name of a target. */
229 target_command (char *arg
, int from_tty
)
231 fputs_filtered ("Argument required (target name). Try `help target'\n",
235 /* Default target_has_* methods for process_stratum targets. */
238 default_child_has_all_memory (struct target_ops
*ops
)
240 /* If no inferior selected, then we can't read memory here. */
241 if (ptid_equal (inferior_ptid
, null_ptid
))
248 default_child_has_memory (struct target_ops
*ops
)
250 /* If no inferior selected, then we can't read memory here. */
251 if (ptid_equal (inferior_ptid
, null_ptid
))
258 default_child_has_stack (struct target_ops
*ops
)
260 /* If no inferior selected, there's no stack. */
261 if (ptid_equal (inferior_ptid
, null_ptid
))
268 default_child_has_registers (struct target_ops
*ops
)
270 /* Can't read registers from no inferior. */
271 if (ptid_equal (inferior_ptid
, null_ptid
))
278 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
280 /* If there's no thread selected, then we can't make it run through
282 if (ptid_equal (the_ptid
, null_ptid
))
290 target_has_all_memory_1 (void)
292 struct target_ops
*t
;
294 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
295 if (t
->to_has_all_memory (t
))
302 target_has_memory_1 (void)
304 struct target_ops
*t
;
306 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
307 if (t
->to_has_memory (t
))
314 target_has_stack_1 (void)
316 struct target_ops
*t
;
318 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
319 if (t
->to_has_stack (t
))
326 target_has_registers_1 (void)
328 struct target_ops
*t
;
330 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
331 if (t
->to_has_registers (t
))
338 target_has_execution_1 (ptid_t the_ptid
)
340 struct target_ops
*t
;
342 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
343 if (t
->to_has_execution (t
, the_ptid
))
350 target_has_execution_current (void)
352 return target_has_execution_1 (inferior_ptid
);
355 /* Complete initialization of T. This ensures that various fields in
356 T are set, if needed by the target implementation. */
359 complete_target_initialization (struct target_ops
*t
)
361 /* Provide default values for all "must have" methods. */
362 if (t
->to_xfer_partial
== NULL
)
363 t
->to_xfer_partial
= default_xfer_partial
;
365 if (t
->to_has_all_memory
== NULL
)
366 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
368 if (t
->to_has_memory
== NULL
)
369 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
371 if (t
->to_has_stack
== NULL
)
372 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
374 if (t
->to_has_registers
== NULL
)
375 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
377 if (t
->to_has_execution
== NULL
)
378 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
380 install_delegators (t
);
383 /* Add possible target architecture T to the list and add a new
384 command 'target T->to_shortname'. Set COMPLETER as the command's
385 completer if not NULL. */
388 add_target_with_completer (struct target_ops
*t
,
389 completer_ftype
*completer
)
391 struct cmd_list_element
*c
;
393 complete_target_initialization (t
);
397 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
398 target_structs
= (struct target_ops
**) xmalloc
399 (target_struct_allocsize
* sizeof (*target_structs
));
401 if (target_struct_size
>= target_struct_allocsize
)
403 target_struct_allocsize
*= 2;
404 target_structs
= (struct target_ops
**)
405 xrealloc ((char *) target_structs
,
406 target_struct_allocsize
* sizeof (*target_structs
));
408 target_structs
[target_struct_size
++] = t
;
410 if (targetlist
== NULL
)
411 add_prefix_cmd ("target", class_run
, target_command
, _("\
412 Connect to a target machine or process.\n\
413 The first argument is the type or protocol of the target machine.\n\
414 Remaining arguments are interpreted by the target protocol. For more\n\
415 information on the arguments for a particular protocol, type\n\
416 `help target ' followed by the protocol name."),
417 &targetlist
, "target ", 0, &cmdlist
);
418 c
= add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
,
420 if (completer
!= NULL
)
421 set_cmd_completer (c
, completer
);
424 /* Add a possible target architecture to the list. */
427 add_target (struct target_ops
*t
)
429 add_target_with_completer (t
, NULL
);
435 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
437 struct cmd_list_element
*c
;
440 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
442 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
443 alt
= xstrprintf ("target %s", t
->to_shortname
);
444 deprecate_cmd (c
, alt
);
457 struct target_ops
*t
;
459 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
460 if (t
->to_kill
!= NULL
)
463 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
473 target_load (char *arg
, int from_tty
)
475 target_dcache_invalidate ();
476 (*current_target
.to_load
) (¤t_target
, arg
, from_tty
);
480 target_create_inferior (char *exec_file
, char *args
,
481 char **env
, int from_tty
)
483 struct target_ops
*t
;
485 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
487 if (t
->to_create_inferior
!= NULL
)
489 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
491 fprintf_unfiltered (gdb_stdlog
,
492 "target_create_inferior (%s, %s, xxx, %d)\n",
493 exec_file
, args
, from_tty
);
498 internal_error (__FILE__
, __LINE__
,
499 _("could not find a target to create inferior"));
503 target_terminal_inferior (void)
505 /* A background resume (``run&'') should leave GDB in control of the
506 terminal. Use target_can_async_p, not target_is_async_p, since at
507 this point the target is not async yet. However, if sync_execution
508 is not set, we know it will become async prior to resume. */
509 if (target_can_async_p () && !sync_execution
)
512 /* If GDB is resuming the inferior in the foreground, install
513 inferior's terminal modes. */
514 (*current_target
.to_terminal_inferior
) (¤t_target
);
518 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
519 struct target_ops
*t
)
521 errno
= EIO
; /* Can't read/write this location. */
522 return 0; /* No bytes handled. */
528 error (_("You can't do that when your target is `%s'"),
529 current_target
.to_shortname
);
535 error (_("You can't do that without a process to debug."));
539 default_terminal_info (struct target_ops
*self
, const char *args
, int from_tty
)
541 printf_unfiltered (_("No saved terminal information.\n"));
544 /* A default implementation for the to_get_ada_task_ptid target method.
546 This function builds the PTID by using both LWP and TID as part of
547 the PTID lwp and tid elements. The pid used is the pid of the
551 default_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long tid
)
553 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
556 static enum exec_direction_kind
557 default_execution_direction (struct target_ops
*self
)
559 if (!target_can_execute_reverse
)
561 else if (!target_can_async_p ())
564 gdb_assert_not_reached ("\
565 to_execution_direction must be implemented for reverse async");
568 /* Go through the target stack from top to bottom, copying over zero
569 entries in current_target, then filling in still empty entries. In
570 effect, we are doing class inheritance through the pushed target
573 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
574 is currently implemented, is that it discards any knowledge of
575 which target an inherited method originally belonged to.
576 Consequently, new new target methods should instead explicitly and
577 locally search the target stack for the target that can handle the
581 update_current_target (void)
583 struct target_ops
*t
;
585 /* First, reset current's contents. */
586 memset (¤t_target
, 0, sizeof (current_target
));
588 /* Install the delegators. */
589 install_delegators (¤t_target
);
591 #define INHERIT(FIELD, TARGET) \
592 if (!current_target.FIELD) \
593 current_target.FIELD = (TARGET)->FIELD
595 for (t
= target_stack
; t
; t
= t
->beneath
)
597 INHERIT (to_shortname
, t
);
598 INHERIT (to_longname
, t
);
600 /* Do not inherit to_open. */
601 /* Do not inherit to_close. */
602 /* Do not inherit to_attach. */
603 /* Do not inherit to_post_attach. */
604 INHERIT (to_attach_no_wait
, t
);
605 /* Do not inherit to_detach. */
606 /* Do not inherit to_disconnect. */
607 /* Do not inherit to_resume. */
608 /* Do not inherit to_wait. */
609 /* Do not inherit to_fetch_registers. */
610 /* Do not inherit to_store_registers. */
611 /* Do not inherit to_prepare_to_store. */
612 INHERIT (deprecated_xfer_memory
, t
);
613 /* Do not inherit to_files_info. */
614 /* Do not inherit to_insert_breakpoint. */
615 /* Do not inherit to_remove_breakpoint. */
616 /* Do not inherit to_can_use_hw_breakpoint. */
617 /* Do not inherit to_insert_hw_breakpoint. */
618 /* Do not inherit to_remove_hw_breakpoint. */
619 /* Do not inherit to_ranged_break_num_registers. */
620 /* Do not inherit to_insert_watchpoint. */
621 /* Do not inherit to_remove_watchpoint. */
622 /* Do not inherit to_insert_mask_watchpoint. */
623 /* Do not inherit to_remove_mask_watchpoint. */
624 /* Do not inherit to_stopped_data_address. */
625 INHERIT (to_have_steppable_watchpoint
, t
);
626 INHERIT (to_have_continuable_watchpoint
, t
);
627 /* Do not inherit to_stopped_by_watchpoint. */
628 /* Do not inherit to_watchpoint_addr_within_range. */
629 /* Do not inherit to_region_ok_for_hw_watchpoint. */
630 /* Do not inherit to_can_accel_watchpoint_condition. */
631 /* Do not inherit to_masked_watch_num_registers. */
632 /* Do not inherit to_terminal_init. */
633 /* Do not inherit to_terminal_inferior. */
634 /* Do not inherit to_terminal_ours_for_output. */
635 /* Do not inherit to_terminal_ours. */
636 /* Do not inherit to_terminal_save_ours. */
637 /* Do not inherit to_terminal_info. */
638 /* Do not inherit to_kill. */
639 /* Do not inherit to_load. */
640 /* Do no inherit to_create_inferior. */
641 /* Do not inherit to_post_startup_inferior. */
642 /* Do not inherit to_insert_fork_catchpoint. */
643 /* Do not inherit to_remove_fork_catchpoint. */
644 /* Do not inherit to_insert_vfork_catchpoint. */
645 /* Do not inherit to_remove_vfork_catchpoint. */
646 /* Do not inherit to_follow_fork. */
647 /* Do not inherit to_insert_exec_catchpoint. */
648 /* Do not inherit to_remove_exec_catchpoint. */
649 /* Do not inherit to_set_syscall_catchpoint. */
650 /* Do not inherit to_has_exited. */
651 /* Do not inherit to_mourn_inferior. */
652 INHERIT (to_can_run
, t
);
653 /* Do not inherit to_pass_signals. */
654 /* Do not inherit to_program_signals. */
655 /* Do not inherit to_thread_alive. */
656 /* Do not inherit to_find_new_threads. */
657 /* Do not inherit to_pid_to_str. */
658 /* Do not inherit to_extra_thread_info. */
659 /* Do not inherit to_thread_name. */
660 INHERIT (to_stop
, t
);
661 /* Do not inherit to_xfer_partial. */
662 /* Do not inherit to_rcmd. */
663 /* Do not inherit to_pid_to_exec_file. */
664 /* Do not inherit to_log_command. */
665 INHERIT (to_stratum
, t
);
666 /* Do not inherit to_has_all_memory. */
667 /* Do not inherit to_has_memory. */
668 /* Do not inherit to_has_stack. */
669 /* Do not inherit to_has_registers. */
670 /* Do not inherit to_has_execution. */
671 INHERIT (to_has_thread_control
, t
);
672 /* Do not inherit to_can_async_p. */
673 /* Do not inherit to_is_async_p. */
674 /* Do not inherit to_async. */
675 /* Do not inherit to_find_memory_regions. */
676 /* Do not inherit to_make_corefile_notes. */
677 /* Do not inherit to_get_bookmark. */
678 /* Do not inherit to_goto_bookmark. */
679 /* Do not inherit to_get_thread_local_address. */
680 /* Do not inherit to_can_execute_reverse. */
681 /* Do not inherit to_execution_direction. */
682 /* Do not inherit to_thread_architecture. */
683 /* Do not inherit to_read_description. */
684 /* Do not inherit to_get_ada_task_ptid. */
685 /* Do not inherit to_search_memory. */
686 /* Do not inherit to_supports_multi_process. */
687 /* Do not inherit to_supports_enable_disable_tracepoint. */
688 /* Do not inherit to_supports_string_tracing. */
689 /* Do not inherit to_trace_init. */
690 /* Do not inherit to_download_tracepoint. */
691 /* Do not inherit to_can_download_tracepoint. */
692 /* Do not inherit to_download_trace_state_variable. */
693 /* Do not inherit to_enable_tracepoint. */
694 /* Do not inherit to_disable_tracepoint. */
695 /* Do not inherit to_trace_set_readonly_regions. */
696 /* Do not inherit to_trace_start. */
697 /* Do not inherit to_get_trace_status. */
698 /* Do not inherit to_get_tracepoint_status. */
699 /* Do not inherit to_trace_stop. */
700 /* Do not inherit to_trace_find. */
701 /* Do not inherit to_get_trace_state_variable_value. */
702 /* Do not inherit to_save_trace_data. */
703 /* Do not inherit to_upload_tracepoints. */
704 /* Do not inherit to_upload_trace_state_variables. */
705 /* Do not inherit to_get_raw_trace_data. */
706 /* Do not inherit to_get_min_fast_tracepoint_insn_len. */
707 /* Do not inherit to_set_disconnected_tracing. */
708 /* Do not inherit to_set_circular_trace_buffer. */
709 /* Do not inherit to_set_trace_buffer_size. */
710 /* Do not inherit to_set_trace_notes. */
711 INHERIT (to_get_tib_address
, t
);
712 INHERIT (to_set_permissions
, t
);
713 INHERIT (to_static_tracepoint_marker_at
, t
);
714 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
715 INHERIT (to_traceframe_info
, t
);
716 INHERIT (to_use_agent
, t
);
717 INHERIT (to_can_use_agent
, t
);
718 INHERIT (to_augmented_libraries_svr4_read
, t
);
719 INHERIT (to_magic
, t
);
720 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
721 INHERIT (to_can_run_breakpoint_commands
, t
);
722 /* Do not inherit to_memory_map. */
723 /* Do not inherit to_flash_erase. */
724 /* Do not inherit to_flash_done. */
728 /* Clean up a target struct so it no longer has any zero pointers in
729 it. Some entries are defaulted to a method that print an error,
730 others are hard-wired to a standard recursive default. */
732 #define de_fault(field, value) \
733 if (!current_target.field) \
734 current_target.field = value
737 (void (*) (char *, int))
740 (void (*) (struct target_ops
*))
742 de_fault (deprecated_xfer_memory
,
743 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
744 struct mem_attrib
*, struct target_ops
*))
746 de_fault (to_can_run
,
747 (int (*) (struct target_ops
*))
750 (void (*) (struct target_ops
*, ptid_t
))
752 current_target
.to_read_description
= NULL
;
753 de_fault (to_get_tib_address
,
754 (int (*) (struct target_ops
*, ptid_t
, CORE_ADDR
*))
756 de_fault (to_set_permissions
,
757 (void (*) (struct target_ops
*))
759 de_fault (to_static_tracepoint_marker_at
,
760 (int (*) (struct target_ops
*,
761 CORE_ADDR
, struct static_tracepoint_marker
*))
763 de_fault (to_static_tracepoint_markers_by_strid
,
764 (VEC(static_tracepoint_marker_p
) * (*) (struct target_ops
*,
767 de_fault (to_traceframe_info
,
768 (struct traceframe_info
* (*) (struct target_ops
*))
770 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
771 (int (*) (struct target_ops
*))
773 de_fault (to_can_run_breakpoint_commands
,
774 (int (*) (struct target_ops
*))
776 de_fault (to_use_agent
,
777 (int (*) (struct target_ops
*, int))
779 de_fault (to_can_use_agent
,
780 (int (*) (struct target_ops
*))
782 de_fault (to_augmented_libraries_svr4_read
,
783 (int (*) (struct target_ops
*))
788 /* Finally, position the target-stack beneath the squashed
789 "current_target". That way code looking for a non-inherited
790 target method can quickly and simply find it. */
791 current_target
.beneath
= target_stack
;
794 setup_target_debug ();
797 /* Push a new target type into the stack of the existing target accessors,
798 possibly superseding some of the existing accessors.
800 Rather than allow an empty stack, we always have the dummy target at
801 the bottom stratum, so we can call the function vectors without
805 push_target (struct target_ops
*t
)
807 struct target_ops
**cur
;
809 /* Check magic number. If wrong, it probably means someone changed
810 the struct definition, but not all the places that initialize one. */
811 if (t
->to_magic
!= OPS_MAGIC
)
813 fprintf_unfiltered (gdb_stderr
,
814 "Magic number of %s target struct wrong\n",
816 internal_error (__FILE__
, __LINE__
,
817 _("failed internal consistency check"));
820 /* Find the proper stratum to install this target in. */
821 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
823 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
827 /* If there's already targets at this stratum, remove them. */
828 /* FIXME: cagney/2003-10-15: I think this should be popping all
829 targets to CUR, and not just those at this stratum level. */
830 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
832 /* There's already something at this stratum level. Close it,
833 and un-hook it from the stack. */
834 struct target_ops
*tmp
= (*cur
);
836 (*cur
) = (*cur
)->beneath
;
841 /* We have removed all targets in our stratum, now add the new one. */
845 update_current_target ();
848 /* Remove a target_ops vector from the stack, wherever it may be.
849 Return how many times it was removed (0 or 1). */
852 unpush_target (struct target_ops
*t
)
854 struct target_ops
**cur
;
855 struct target_ops
*tmp
;
857 if (t
->to_stratum
== dummy_stratum
)
858 internal_error (__FILE__
, __LINE__
,
859 _("Attempt to unpush the dummy target"));
861 /* Look for the specified target. Note that we assume that a target
862 can only occur once in the target stack. */
864 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
870 /* If we don't find target_ops, quit. Only open targets should be
875 /* Unchain the target. */
877 (*cur
) = (*cur
)->beneath
;
880 update_current_target ();
882 /* Finally close the target. Note we do this after unchaining, so
883 any target method calls from within the target_close
884 implementation don't end up in T anymore. */
891 pop_all_targets_above (enum strata above_stratum
)
893 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
895 if (!unpush_target (target_stack
))
897 fprintf_unfiltered (gdb_stderr
,
898 "pop_all_targets couldn't find target %s\n",
899 target_stack
->to_shortname
);
900 internal_error (__FILE__
, __LINE__
,
901 _("failed internal consistency check"));
908 pop_all_targets (void)
910 pop_all_targets_above (dummy_stratum
);
913 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
916 target_is_pushed (struct target_ops
*t
)
918 struct target_ops
**cur
;
920 /* Check magic number. If wrong, it probably means someone changed
921 the struct definition, but not all the places that initialize one. */
922 if (t
->to_magic
!= OPS_MAGIC
)
924 fprintf_unfiltered (gdb_stderr
,
925 "Magic number of %s target struct wrong\n",
927 internal_error (__FILE__
, __LINE__
,
928 _("failed internal consistency check"));
931 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
938 /* Using the objfile specified in OBJFILE, find the address for the
939 current thread's thread-local storage with offset OFFSET. */
941 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
943 volatile CORE_ADDR addr
= 0;
944 struct target_ops
*target
;
946 for (target
= current_target
.beneath
;
948 target
= target
->beneath
)
950 if (target
->to_get_thread_local_address
!= NULL
)
955 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
957 ptid_t ptid
= inferior_ptid
;
958 volatile struct gdb_exception ex
;
960 TRY_CATCH (ex
, RETURN_MASK_ALL
)
964 /* Fetch the load module address for this objfile. */
965 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
967 /* If it's 0, throw the appropriate exception. */
969 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
970 _("TLS load module not found"));
972 addr
= target
->to_get_thread_local_address (target
, ptid
,
975 /* If an error occurred, print TLS related messages here. Otherwise,
976 throw the error to some higher catcher. */
979 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
983 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
984 error (_("Cannot find thread-local variables "
985 "in this thread library."));
987 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
988 if (objfile_is_library
)
989 error (_("Cannot find shared library `%s' in dynamic"
990 " linker's load module list"), objfile_name (objfile
));
992 error (_("Cannot find executable file `%s' in dynamic"
993 " linker's load module list"), objfile_name (objfile
));
995 case TLS_NOT_ALLOCATED_YET_ERROR
:
996 if (objfile_is_library
)
997 error (_("The inferior has not yet allocated storage for"
998 " thread-local variables in\n"
999 "the shared library `%s'\n"
1001 objfile_name (objfile
), target_pid_to_str (ptid
));
1003 error (_("The inferior has not yet allocated storage for"
1004 " thread-local variables in\n"
1005 "the executable `%s'\n"
1007 objfile_name (objfile
), target_pid_to_str (ptid
));
1009 case TLS_GENERIC_ERROR
:
1010 if (objfile_is_library
)
1011 error (_("Cannot find thread-local storage for %s, "
1012 "shared library %s:\n%s"),
1013 target_pid_to_str (ptid
),
1014 objfile_name (objfile
), ex
.message
);
1016 error (_("Cannot find thread-local storage for %s, "
1017 "executable file %s:\n%s"),
1018 target_pid_to_str (ptid
),
1019 objfile_name (objfile
), ex
.message
);
1022 throw_exception (ex
);
1027 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1028 TLS is an ABI-specific thing. But we don't do that yet. */
1030 error (_("Cannot find thread-local variables on this target"));
1036 target_xfer_status_to_string (enum target_xfer_status err
)
1038 #define CASE(X) case X: return #X
1041 CASE(TARGET_XFER_E_IO
);
1042 CASE(TARGET_XFER_E_UNAVAILABLE
);
1051 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1053 /* target_read_string -- read a null terminated string, up to LEN bytes,
1054 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1055 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1056 is responsible for freeing it. Return the number of bytes successfully
1060 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1062 int tlen
, offset
, i
;
1066 int buffer_allocated
;
1068 unsigned int nbytes_read
= 0;
1070 gdb_assert (string
);
1072 /* Small for testing. */
1073 buffer_allocated
= 4;
1074 buffer
= xmalloc (buffer_allocated
);
1079 tlen
= MIN (len
, 4 - (memaddr
& 3));
1080 offset
= memaddr
& 3;
1082 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1085 /* The transfer request might have crossed the boundary to an
1086 unallocated region of memory. Retry the transfer, requesting
1090 errcode
= target_read_memory (memaddr
, buf
, 1);
1095 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1099 bytes
= bufptr
- buffer
;
1100 buffer_allocated
*= 2;
1101 buffer
= xrealloc (buffer
, buffer_allocated
);
1102 bufptr
= buffer
+ bytes
;
1105 for (i
= 0; i
< tlen
; i
++)
1107 *bufptr
++ = buf
[i
+ offset
];
1108 if (buf
[i
+ offset
] == '\000')
1110 nbytes_read
+= i
+ 1;
1117 nbytes_read
+= tlen
;
1126 struct target_section_table
*
1127 target_get_section_table (struct target_ops
*target
)
1129 struct target_ops
*t
;
1132 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1134 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1135 if (t
->to_get_section_table
!= NULL
)
1136 return (*t
->to_get_section_table
) (t
);
1141 /* Find a section containing ADDR. */
1143 struct target_section
*
1144 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1146 struct target_section_table
*table
= target_get_section_table (target
);
1147 struct target_section
*secp
;
1152 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1154 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1160 /* Read memory from the live target, even if currently inspecting a
1161 traceframe. The return is the same as that of target_read. */
1163 static enum target_xfer_status
1164 target_read_live_memory (enum target_object object
,
1165 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1166 ULONGEST
*xfered_len
)
1168 enum target_xfer_status ret
;
1169 struct cleanup
*cleanup
;
1171 /* Switch momentarily out of tfind mode so to access live memory.
1172 Note that this must not clear global state, such as the frame
1173 cache, which must still remain valid for the previous traceframe.
1174 We may be _building_ the frame cache at this point. */
1175 cleanup
= make_cleanup_restore_traceframe_number ();
1176 set_traceframe_number (-1);
1178 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1179 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1181 do_cleanups (cleanup
);
1185 /* Using the set of read-only target sections of OPS, read live
1186 read-only memory. Note that the actual reads start from the
1187 top-most target again.
1189 For interface/parameters/return description see target.h,
1192 static enum target_xfer_status
1193 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1194 enum target_object object
,
1195 gdb_byte
*readbuf
, ULONGEST memaddr
,
1196 ULONGEST len
, ULONGEST
*xfered_len
)
1198 struct target_section
*secp
;
1199 struct target_section_table
*table
;
1201 secp
= target_section_by_addr (ops
, memaddr
);
1203 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1204 secp
->the_bfd_section
)
1207 struct target_section
*p
;
1208 ULONGEST memend
= memaddr
+ len
;
1210 table
= target_get_section_table (ops
);
1212 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1214 if (memaddr
>= p
->addr
)
1216 if (memend
<= p
->endaddr
)
1218 /* Entire transfer is within this section. */
1219 return target_read_live_memory (object
, memaddr
,
1220 readbuf
, len
, xfered_len
);
1222 else if (memaddr
>= p
->endaddr
)
1224 /* This section ends before the transfer starts. */
1229 /* This section overlaps the transfer. Just do half. */
1230 len
= p
->endaddr
- memaddr
;
1231 return target_read_live_memory (object
, memaddr
,
1232 readbuf
, len
, xfered_len
);
1238 return TARGET_XFER_EOF
;
1241 /* Read memory from more than one valid target. A core file, for
1242 instance, could have some of memory but delegate other bits to
1243 the target below it. So, we must manually try all targets. */
1245 static enum target_xfer_status
1246 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1247 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1248 ULONGEST
*xfered_len
)
1250 enum target_xfer_status res
;
1254 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1255 readbuf
, writebuf
, memaddr
, len
,
1257 if (res
== TARGET_XFER_OK
)
1260 /* Stop if the target reports that the memory is not available. */
1261 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1264 /* We want to continue past core files to executables, but not
1265 past a running target's memory. */
1266 if (ops
->to_has_all_memory (ops
))
1271 while (ops
!= NULL
);
1276 /* Perform a partial memory transfer.
1277 For docs see target.h, to_xfer_partial. */
1279 static enum target_xfer_status
1280 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1281 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1282 ULONGEST len
, ULONGEST
*xfered_len
)
1284 enum target_xfer_status res
;
1286 struct mem_region
*region
;
1287 struct inferior
*inf
;
1289 /* For accesses to unmapped overlay sections, read directly from
1290 files. Must do this first, as MEMADDR may need adjustment. */
1291 if (readbuf
!= NULL
&& overlay_debugging
)
1293 struct obj_section
*section
= find_pc_overlay (memaddr
);
1295 if (pc_in_unmapped_range (memaddr
, section
))
1297 struct target_section_table
*table
1298 = target_get_section_table (ops
);
1299 const char *section_name
= section
->the_bfd_section
->name
;
1301 memaddr
= overlay_mapped_address (memaddr
, section
);
1302 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1303 memaddr
, len
, xfered_len
,
1305 table
->sections_end
,
1310 /* Try the executable files, if "trust-readonly-sections" is set. */
1311 if (readbuf
!= NULL
&& trust_readonly
)
1313 struct target_section
*secp
;
1314 struct target_section_table
*table
;
1316 secp
= target_section_by_addr (ops
, memaddr
);
1318 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1319 secp
->the_bfd_section
)
1322 table
= target_get_section_table (ops
);
1323 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1324 memaddr
, len
, xfered_len
,
1326 table
->sections_end
,
1331 /* If reading unavailable memory in the context of traceframes, and
1332 this address falls within a read-only section, fallback to
1333 reading from live memory. */
1334 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1336 VEC(mem_range_s
) *available
;
1338 /* If we fail to get the set of available memory, then the
1339 target does not support querying traceframe info, and so we
1340 attempt reading from the traceframe anyway (assuming the
1341 target implements the old QTro packet then). */
1342 if (traceframe_available_memory (&available
, memaddr
, len
))
1344 struct cleanup
*old_chain
;
1346 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1348 if (VEC_empty (mem_range_s
, available
)
1349 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1351 /* Don't read into the traceframe's available
1353 if (!VEC_empty (mem_range_s
, available
))
1355 LONGEST oldlen
= len
;
1357 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1358 gdb_assert (len
<= oldlen
);
1361 do_cleanups (old_chain
);
1363 /* This goes through the topmost target again. */
1364 res
= memory_xfer_live_readonly_partial (ops
, object
,
1367 if (res
== TARGET_XFER_OK
)
1368 return TARGET_XFER_OK
;
1371 /* No use trying further, we know some memory starting
1372 at MEMADDR isn't available. */
1374 return TARGET_XFER_E_UNAVAILABLE
;
1378 /* Don't try to read more than how much is available, in
1379 case the target implements the deprecated QTro packet to
1380 cater for older GDBs (the target's knowledge of read-only
1381 sections may be outdated by now). */
1382 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1384 do_cleanups (old_chain
);
1388 /* Try GDB's internal data cache. */
1389 region
= lookup_mem_region (memaddr
);
1390 /* region->hi == 0 means there's no upper bound. */
1391 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1394 reg_len
= region
->hi
- memaddr
;
1396 switch (region
->attrib
.mode
)
1399 if (writebuf
!= NULL
)
1400 return TARGET_XFER_E_IO
;
1404 if (readbuf
!= NULL
)
1405 return TARGET_XFER_E_IO
;
1409 /* We only support writing to flash during "load" for now. */
1410 if (writebuf
!= NULL
)
1411 error (_("Writing to flash memory forbidden in this context"));
1415 return TARGET_XFER_E_IO
;
1418 if (!ptid_equal (inferior_ptid
, null_ptid
))
1419 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1424 /* The dcache reads whole cache lines; that doesn't play well
1425 with reading from a trace buffer, because reading outside of
1426 the collected memory range fails. */
1427 && get_traceframe_number () == -1
1428 && (region
->attrib
.cache
1429 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1430 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1432 DCACHE
*dcache
= target_dcache_get_or_init ();
1435 if (readbuf
!= NULL
)
1436 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1438 /* FIXME drow/2006-08-09: If we're going to preserve const
1439 correctness dcache_xfer_memory should take readbuf and
1441 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1444 return TARGET_XFER_E_IO
;
1447 *xfered_len
= (ULONGEST
) l
;
1448 return TARGET_XFER_OK
;
1452 /* If none of those methods found the memory we wanted, fall back
1453 to a target partial transfer. Normally a single call to
1454 to_xfer_partial is enough; if it doesn't recognize an object
1455 it will call the to_xfer_partial of the next target down.
1456 But for memory this won't do. Memory is the only target
1457 object which can be read from more than one valid target.
1458 A core file, for instance, could have some of memory but
1459 delegate other bits to the target below it. So, we must
1460 manually try all targets. */
1462 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1465 /* Make sure the cache gets updated no matter what - if we are writing
1466 to the stack. Even if this write is not tagged as such, we still need
1467 to update the cache. */
1469 if (res
== TARGET_XFER_OK
1472 && target_dcache_init_p ()
1473 && !region
->attrib
.cache
1474 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1475 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1477 DCACHE
*dcache
= target_dcache_get ();
1479 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1482 /* If we still haven't got anything, return the last error. We
1487 /* Perform a partial memory transfer. For docs see target.h,
1490 static enum target_xfer_status
1491 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1492 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1493 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1495 enum target_xfer_status res
;
1497 /* Zero length requests are ok and require no work. */
1499 return TARGET_XFER_EOF
;
1501 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1502 breakpoint insns, thus hiding out from higher layers whether
1503 there are software breakpoints inserted in the code stream. */
1504 if (readbuf
!= NULL
)
1506 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1509 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1510 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1515 struct cleanup
*old_chain
;
1517 /* A large write request is likely to be partially satisfied
1518 by memory_xfer_partial_1. We will continually malloc
1519 and free a copy of the entire write request for breakpoint
1520 shadow handling even though we only end up writing a small
1521 subset of it. Cap writes to 4KB to mitigate this. */
1522 len
= min (4096, len
);
1524 buf
= xmalloc (len
);
1525 old_chain
= make_cleanup (xfree
, buf
);
1526 memcpy (buf
, writebuf
, len
);
1528 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1529 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1532 do_cleanups (old_chain
);
1539 restore_show_memory_breakpoints (void *arg
)
1541 show_memory_breakpoints
= (uintptr_t) arg
;
1545 make_show_memory_breakpoints_cleanup (int show
)
1547 int current
= show_memory_breakpoints
;
1549 show_memory_breakpoints
= show
;
1550 return make_cleanup (restore_show_memory_breakpoints
,
1551 (void *) (uintptr_t) current
);
1554 /* For docs see target.h, to_xfer_partial. */
1556 enum target_xfer_status
1557 target_xfer_partial (struct target_ops
*ops
,
1558 enum target_object object
, const char *annex
,
1559 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1560 ULONGEST offset
, ULONGEST len
,
1561 ULONGEST
*xfered_len
)
1563 enum target_xfer_status retval
;
1565 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1567 /* Transfer is done when LEN is zero. */
1569 return TARGET_XFER_EOF
;
1571 if (writebuf
&& !may_write_memory
)
1572 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1573 core_addr_to_string_nz (offset
), plongest (len
));
1577 /* If this is a memory transfer, let the memory-specific code
1578 have a look at it instead. Memory transfers are more
1580 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1581 || object
== TARGET_OBJECT_CODE_MEMORY
)
1582 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1583 writebuf
, offset
, len
, xfered_len
);
1584 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1586 /* Request the normal memory object from other layers. */
1587 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1591 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1592 writebuf
, offset
, len
, xfered_len
);
1596 const unsigned char *myaddr
= NULL
;
1598 fprintf_unfiltered (gdb_stdlog
,
1599 "%s:target_xfer_partial "
1600 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1603 (annex
? annex
: "(null)"),
1604 host_address_to_string (readbuf
),
1605 host_address_to_string (writebuf
),
1606 core_addr_to_string_nz (offset
),
1607 pulongest (len
), retval
,
1608 pulongest (*xfered_len
));
1614 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1618 fputs_unfiltered (", bytes =", gdb_stdlog
);
1619 for (i
= 0; i
< *xfered_len
; i
++)
1621 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1623 if (targetdebug
< 2 && i
> 0)
1625 fprintf_unfiltered (gdb_stdlog
, " ...");
1628 fprintf_unfiltered (gdb_stdlog
, "\n");
1631 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1635 fputc_unfiltered ('\n', gdb_stdlog
);
1638 /* Check implementations of to_xfer_partial update *XFERED_LEN
1639 properly. Do assertion after printing debug messages, so that we
1640 can find more clues on assertion failure from debugging messages. */
1641 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1642 gdb_assert (*xfered_len
> 0);
1647 /* Read LEN bytes of target memory at address MEMADDR, placing the
1648 results in GDB's memory at MYADDR. Returns either 0 for success or
1649 TARGET_XFER_E_IO if any error occurs.
1651 If an error occurs, no guarantee is made about the contents of the data at
1652 MYADDR. In particular, the caller should not depend upon partial reads
1653 filling the buffer with good data. There is no way for the caller to know
1654 how much good data might have been transfered anyway. Callers that can
1655 deal with partial reads should call target_read (which will retry until
1656 it makes no progress, and then return how much was transferred). */
1659 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1661 /* Dispatch to the topmost target, not the flattened current_target.
1662 Memory accesses check target->to_has_(all_)memory, and the
1663 flattened target doesn't inherit those. */
1664 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1665 myaddr
, memaddr
, len
) == len
)
1668 return TARGET_XFER_E_IO
;
1671 /* Like target_read_memory, but specify explicitly that this is a read
1672 from the target's raw memory. That is, this read bypasses the
1673 dcache, breakpoint shadowing, etc. */
1676 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1678 /* See comment in target_read_memory about why the request starts at
1679 current_target.beneath. */
1680 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1681 myaddr
, memaddr
, len
) == len
)
1684 return TARGET_XFER_E_IO
;
1687 /* Like target_read_memory, but specify explicitly that this is a read from
1688 the target's stack. This may trigger different cache behavior. */
1691 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1693 /* See comment in target_read_memory about why the request starts at
1694 current_target.beneath. */
1695 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1696 myaddr
, memaddr
, len
) == len
)
1699 return TARGET_XFER_E_IO
;
1702 /* Like target_read_memory, but specify explicitly that this is a read from
1703 the target's code. This may trigger different cache behavior. */
1706 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1708 /* See comment in target_read_memory about why the request starts at
1709 current_target.beneath. */
1710 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1711 myaddr
, memaddr
, len
) == len
)
1714 return TARGET_XFER_E_IO
;
1717 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1718 Returns either 0 for success or TARGET_XFER_E_IO if any
1719 error occurs. If an error occurs, no guarantee is made about how
1720 much data got written. Callers that can deal with partial writes
1721 should call target_write. */
1724 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1726 /* See comment in target_read_memory about why the request starts at
1727 current_target.beneath. */
1728 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1729 myaddr
, memaddr
, len
) == len
)
1732 return TARGET_XFER_E_IO
;
1735 /* Write LEN bytes from MYADDR to target raw memory at address
1736 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1737 if any error occurs. If an error occurs, no guarantee is made
1738 about how much data got written. Callers that can deal with
1739 partial writes should call target_write. */
1742 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1744 /* See comment in target_read_memory about why the request starts at
1745 current_target.beneath. */
1746 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1747 myaddr
, memaddr
, len
) == len
)
1750 return TARGET_XFER_E_IO
;
1753 /* Fetch the target's memory map. */
1756 target_memory_map (void)
1758 VEC(mem_region_s
) *result
;
1759 struct mem_region
*last_one
, *this_one
;
1761 struct target_ops
*t
;
1764 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1766 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1767 if (t
->to_memory_map
!= NULL
)
1773 result
= t
->to_memory_map (t
);
1777 qsort (VEC_address (mem_region_s
, result
),
1778 VEC_length (mem_region_s
, result
),
1779 sizeof (struct mem_region
), mem_region_cmp
);
1781 /* Check that regions do not overlap. Simultaneously assign
1782 a numbering for the "mem" commands to use to refer to
1785 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1787 this_one
->number
= ix
;
1789 if (last_one
&& last_one
->hi
> this_one
->lo
)
1791 warning (_("Overlapping regions in memory map: ignoring"));
1792 VEC_free (mem_region_s
, result
);
1795 last_one
= this_one
;
1802 target_flash_erase (ULONGEST address
, LONGEST length
)
1804 struct target_ops
*t
;
1806 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1807 if (t
->to_flash_erase
!= NULL
)
1810 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1811 hex_string (address
), phex (length
, 0));
1812 t
->to_flash_erase (t
, address
, length
);
1820 target_flash_done (void)
1822 struct target_ops
*t
;
1824 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1825 if (t
->to_flash_done
!= NULL
)
1828 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1829 t
->to_flash_done (t
);
1837 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1838 struct cmd_list_element
*c
, const char *value
)
1840 fprintf_filtered (file
,
1841 _("Mode for reading from readonly sections is %s.\n"),
1845 /* More generic transfers. */
1847 static enum target_xfer_status
1848 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1849 const char *annex
, gdb_byte
*readbuf
,
1850 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1851 ULONGEST
*xfered_len
)
1853 if (object
== TARGET_OBJECT_MEMORY
1854 && ops
->deprecated_xfer_memory
!= NULL
)
1855 /* If available, fall back to the target's
1856 "deprecated_xfer_memory" method. */
1861 if (writebuf
!= NULL
)
1863 void *buffer
= xmalloc (len
);
1864 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1866 memcpy (buffer
, writebuf
, len
);
1867 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1868 1/*write*/, NULL
, ops
);
1869 do_cleanups (cleanup
);
1871 if (readbuf
!= NULL
)
1872 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1873 0/*read*/, NULL
, ops
);
1876 *xfered_len
= (ULONGEST
) xfered
;
1877 return TARGET_XFER_E_IO
;
1879 else if (xfered
== 0 && errno
== 0)
1880 /* "deprecated_xfer_memory" uses 0, cross checked against
1881 ERRNO as one indication of an error. */
1882 return TARGET_XFER_EOF
;
1884 return TARGET_XFER_E_IO
;
1888 gdb_assert (ops
->beneath
!= NULL
);
1889 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1890 readbuf
, writebuf
, offset
, len
,
1895 /* Target vector read/write partial wrapper functions. */
1897 static enum target_xfer_status
1898 target_read_partial (struct target_ops
*ops
,
1899 enum target_object object
,
1900 const char *annex
, gdb_byte
*buf
,
1901 ULONGEST offset
, ULONGEST len
,
1902 ULONGEST
*xfered_len
)
1904 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
1908 static enum target_xfer_status
1909 target_write_partial (struct target_ops
*ops
,
1910 enum target_object object
,
1911 const char *annex
, const gdb_byte
*buf
,
1912 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
1914 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
1918 /* Wrappers to perform the full transfer. */
1920 /* For docs on target_read see target.h. */
1923 target_read (struct target_ops
*ops
,
1924 enum target_object object
,
1925 const char *annex
, gdb_byte
*buf
,
1926 ULONGEST offset
, LONGEST len
)
1930 while (xfered
< len
)
1932 ULONGEST xfered_len
;
1933 enum target_xfer_status status
;
1935 status
= target_read_partial (ops
, object
, annex
,
1936 (gdb_byte
*) buf
+ xfered
,
1937 offset
+ xfered
, len
- xfered
,
1940 /* Call an observer, notifying them of the xfer progress? */
1941 if (status
== TARGET_XFER_EOF
)
1943 else if (status
== TARGET_XFER_OK
)
1945 xfered
+= xfered_len
;
1955 /* Assuming that the entire [begin, end) range of memory cannot be
1956 read, try to read whatever subrange is possible to read.
1958 The function returns, in RESULT, either zero or one memory block.
1959 If there's a readable subrange at the beginning, it is completely
1960 read and returned. Any further readable subrange will not be read.
1961 Otherwise, if there's a readable subrange at the end, it will be
1962 completely read and returned. Any readable subranges before it
1963 (obviously, not starting at the beginning), will be ignored. In
1964 other cases -- either no readable subrange, or readable subrange(s)
1965 that is neither at the beginning, or end, nothing is returned.
1967 The purpose of this function is to handle a read across a boundary
1968 of accessible memory in a case when memory map is not available.
1969 The above restrictions are fine for this case, but will give
1970 incorrect results if the memory is 'patchy'. However, supporting
1971 'patchy' memory would require trying to read every single byte,
1972 and it seems unacceptable solution. Explicit memory map is
1973 recommended for this case -- and target_read_memory_robust will
1974 take care of reading multiple ranges then. */
1977 read_whatever_is_readable (struct target_ops
*ops
,
1978 ULONGEST begin
, ULONGEST end
,
1979 VEC(memory_read_result_s
) **result
)
1981 gdb_byte
*buf
= xmalloc (end
- begin
);
1982 ULONGEST current_begin
= begin
;
1983 ULONGEST current_end
= end
;
1985 memory_read_result_s r
;
1986 ULONGEST xfered_len
;
1988 /* If we previously failed to read 1 byte, nothing can be done here. */
1989 if (end
- begin
<= 1)
1995 /* Check that either first or the last byte is readable, and give up
1996 if not. This heuristic is meant to permit reading accessible memory
1997 at the boundary of accessible region. */
1998 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1999 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
2004 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2005 buf
+ (end
-begin
) - 1, end
- 1, 1,
2006 &xfered_len
) == TARGET_XFER_OK
)
2017 /* Loop invariant is that the [current_begin, current_end) was previously
2018 found to be not readable as a whole.
2020 Note loop condition -- if the range has 1 byte, we can't divide the range
2021 so there's no point trying further. */
2022 while (current_end
- current_begin
> 1)
2024 ULONGEST first_half_begin
, first_half_end
;
2025 ULONGEST second_half_begin
, second_half_end
;
2027 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2031 first_half_begin
= current_begin
;
2032 first_half_end
= middle
;
2033 second_half_begin
= middle
;
2034 second_half_end
= current_end
;
2038 first_half_begin
= middle
;
2039 first_half_end
= current_end
;
2040 second_half_begin
= current_begin
;
2041 second_half_end
= middle
;
2044 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2045 buf
+ (first_half_begin
- begin
),
2047 first_half_end
- first_half_begin
);
2049 if (xfer
== first_half_end
- first_half_begin
)
2051 /* This half reads up fine. So, the error must be in the
2053 current_begin
= second_half_begin
;
2054 current_end
= second_half_end
;
2058 /* This half is not readable. Because we've tried one byte, we
2059 know some part of this half if actually redable. Go to the next
2060 iteration to divide again and try to read.
2062 We don't handle the other half, because this function only tries
2063 to read a single readable subrange. */
2064 current_begin
= first_half_begin
;
2065 current_end
= first_half_end
;
2071 /* The [begin, current_begin) range has been read. */
2073 r
.end
= current_begin
;
2078 /* The [current_end, end) range has been read. */
2079 LONGEST rlen
= end
- current_end
;
2081 r
.data
= xmalloc (rlen
);
2082 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2083 r
.begin
= current_end
;
2087 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2091 free_memory_read_result_vector (void *x
)
2093 VEC(memory_read_result_s
) *v
= x
;
2094 memory_read_result_s
*current
;
2097 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2099 xfree (current
->data
);
2101 VEC_free (memory_read_result_s
, v
);
2104 VEC(memory_read_result_s
) *
2105 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2107 VEC(memory_read_result_s
) *result
= 0;
2110 while (xfered
< len
)
2112 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2115 /* If there is no explicit region, a fake one should be created. */
2116 gdb_assert (region
);
2118 if (region
->hi
== 0)
2119 rlen
= len
- xfered
;
2121 rlen
= region
->hi
- offset
;
2123 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2125 /* Cannot read this region. Note that we can end up here only
2126 if the region is explicitly marked inaccessible, or
2127 'inaccessible-by-default' is in effect. */
2132 LONGEST to_read
= min (len
- xfered
, rlen
);
2133 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2135 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2136 (gdb_byte
*) buffer
,
2137 offset
+ xfered
, to_read
);
2138 /* Call an observer, notifying them of the xfer progress? */
2141 /* Got an error reading full chunk. See if maybe we can read
2144 read_whatever_is_readable (ops
, offset
+ xfered
,
2145 offset
+ xfered
+ to_read
, &result
);
2150 struct memory_read_result r
;
2152 r
.begin
= offset
+ xfered
;
2153 r
.end
= r
.begin
+ xfer
;
2154 VEC_safe_push (memory_read_result_s
, result
, &r
);
2164 /* An alternative to target_write with progress callbacks. */
2167 target_write_with_progress (struct target_ops
*ops
,
2168 enum target_object object
,
2169 const char *annex
, const gdb_byte
*buf
,
2170 ULONGEST offset
, LONGEST len
,
2171 void (*progress
) (ULONGEST
, void *), void *baton
)
2175 /* Give the progress callback a chance to set up. */
2177 (*progress
) (0, baton
);
2179 while (xfered
< len
)
2181 ULONGEST xfered_len
;
2182 enum target_xfer_status status
;
2184 status
= target_write_partial (ops
, object
, annex
,
2185 (gdb_byte
*) buf
+ xfered
,
2186 offset
+ xfered
, len
- xfered
,
2189 if (status
== TARGET_XFER_EOF
)
2191 if (TARGET_XFER_STATUS_ERROR_P (status
))
2194 gdb_assert (status
== TARGET_XFER_OK
);
2196 (*progress
) (xfered_len
, baton
);
2198 xfered
+= xfered_len
;
2204 /* For docs on target_write see target.h. */
2207 target_write (struct target_ops
*ops
,
2208 enum target_object object
,
2209 const char *annex
, const gdb_byte
*buf
,
2210 ULONGEST offset
, LONGEST len
)
2212 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2216 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2217 the size of the transferred data. PADDING additional bytes are
2218 available in *BUF_P. This is a helper function for
2219 target_read_alloc; see the declaration of that function for more
2223 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2224 const char *annex
, gdb_byte
**buf_p
, int padding
)
2226 size_t buf_alloc
, buf_pos
;
2229 /* This function does not have a length parameter; it reads the
2230 entire OBJECT). Also, it doesn't support objects fetched partly
2231 from one target and partly from another (in a different stratum,
2232 e.g. a core file and an executable). Both reasons make it
2233 unsuitable for reading memory. */
2234 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2236 /* Start by reading up to 4K at a time. The target will throttle
2237 this number down if necessary. */
2239 buf
= xmalloc (buf_alloc
);
2243 ULONGEST xfered_len
;
2244 enum target_xfer_status status
;
2246 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2247 buf_pos
, buf_alloc
- buf_pos
- padding
,
2250 if (status
== TARGET_XFER_EOF
)
2252 /* Read all there was. */
2259 else if (status
!= TARGET_XFER_OK
)
2261 /* An error occurred. */
2263 return TARGET_XFER_E_IO
;
2266 buf_pos
+= xfered_len
;
2268 /* If the buffer is filling up, expand it. */
2269 if (buf_alloc
< buf_pos
* 2)
2272 buf
= xrealloc (buf
, buf_alloc
);
2279 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2280 the size of the transferred data. See the declaration in "target.h"
2281 function for more information about the return value. */
2284 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2285 const char *annex
, gdb_byte
**buf_p
)
2287 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2290 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2291 returned as a string, allocated using xmalloc. If an error occurs
2292 or the transfer is unsupported, NULL is returned. Empty objects
2293 are returned as allocated but empty strings. A warning is issued
2294 if the result contains any embedded NUL bytes. */
2297 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2302 LONGEST i
, transferred
;
2304 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2305 bufstr
= (char *) buffer
;
2307 if (transferred
< 0)
2310 if (transferred
== 0)
2311 return xstrdup ("");
2313 bufstr
[transferred
] = 0;
2315 /* Check for embedded NUL bytes; but allow trailing NULs. */
2316 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2319 warning (_("target object %d, annex %s, "
2320 "contained unexpected null characters"),
2321 (int) object
, annex
? annex
: "(none)");
2328 /* Memory transfer methods. */
2331 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2334 /* This method is used to read from an alternate, non-current
2335 target. This read must bypass the overlay support (as symbols
2336 don't match this target), and GDB's internal cache (wrong cache
2337 for this target). */
2338 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2340 memory_error (TARGET_XFER_E_IO
, addr
);
2344 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2345 int len
, enum bfd_endian byte_order
)
2347 gdb_byte buf
[sizeof (ULONGEST
)];
2349 gdb_assert (len
<= sizeof (buf
));
2350 get_target_memory (ops
, addr
, buf
, len
);
2351 return extract_unsigned_integer (buf
, len
, byte_order
);
2357 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2358 struct bp_target_info
*bp_tgt
)
2360 if (!may_insert_breakpoints
)
2362 warning (_("May not insert breakpoints"));
2366 return current_target
.to_insert_breakpoint (¤t_target
,
2373 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2374 struct bp_target_info
*bp_tgt
)
2376 /* This is kind of a weird case to handle, but the permission might
2377 have been changed after breakpoints were inserted - in which case
2378 we should just take the user literally and assume that any
2379 breakpoints should be left in place. */
2380 if (!may_insert_breakpoints
)
2382 warning (_("May not remove breakpoints"));
2386 return current_target
.to_remove_breakpoint (¤t_target
,
2391 target_info (char *args
, int from_tty
)
2393 struct target_ops
*t
;
2394 int has_all_mem
= 0;
2396 if (symfile_objfile
!= NULL
)
2397 printf_unfiltered (_("Symbols from \"%s\".\n"),
2398 objfile_name (symfile_objfile
));
2400 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2402 if (!(*t
->to_has_memory
) (t
))
2405 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2408 printf_unfiltered (_("\tWhile running this, "
2409 "GDB does not access memory from...\n"));
2410 printf_unfiltered ("%s:\n", t
->to_longname
);
2411 (t
->to_files_info
) (t
);
2412 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2416 /* This function is called before any new inferior is created, e.g.
2417 by running a program, attaching, or connecting to a target.
2418 It cleans up any state from previous invocations which might
2419 change between runs. This is a subset of what target_preopen
2420 resets (things which might change between targets). */
2423 target_pre_inferior (int from_tty
)
2425 /* Clear out solib state. Otherwise the solib state of the previous
2426 inferior might have survived and is entirely wrong for the new
2427 target. This has been observed on GNU/Linux using glibc 2.3. How
2439 Cannot access memory at address 0xdeadbeef
2442 /* In some OSs, the shared library list is the same/global/shared
2443 across inferiors. If code is shared between processes, so are
2444 memory regions and features. */
2445 if (!gdbarch_has_global_solist (target_gdbarch ()))
2447 no_shared_libraries (NULL
, from_tty
);
2449 invalidate_target_mem_regions ();
2451 target_clear_description ();
2454 agent_capability_invalidate ();
2457 /* Callback for iterate_over_inferiors. Gets rid of the given
2461 dispose_inferior (struct inferior
*inf
, void *args
)
2463 struct thread_info
*thread
;
2465 thread
= any_thread_of_process (inf
->pid
);
2468 switch_to_thread (thread
->ptid
);
2470 /* Core inferiors actually should be detached, not killed. */
2471 if (target_has_execution
)
2474 target_detach (NULL
, 0);
2480 /* This is to be called by the open routine before it does
2484 target_preopen (int from_tty
)
2488 if (have_inferiors ())
2491 || !have_live_inferiors ()
2492 || query (_("A program is being debugged already. Kill it? ")))
2493 iterate_over_inferiors (dispose_inferior
, NULL
);
2495 error (_("Program not killed."));
2498 /* Calling target_kill may remove the target from the stack. But if
2499 it doesn't (which seems like a win for UDI), remove it now. */
2500 /* Leave the exec target, though. The user may be switching from a
2501 live process to a core of the same program. */
2502 pop_all_targets_above (file_stratum
);
2504 target_pre_inferior (from_tty
);
2507 /* Detach a target after doing deferred register stores. */
2510 target_detach (const char *args
, int from_tty
)
2512 struct target_ops
* t
;
2514 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2515 /* Don't remove global breakpoints here. They're removed on
2516 disconnection from the target. */
2519 /* If we're in breakpoints-always-inserted mode, have to remove
2520 them before detaching. */
2521 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2523 prepare_for_detach ();
2525 current_target
.to_detach (¤t_target
, args
, from_tty
);
2527 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2532 target_disconnect (char *args
, int from_tty
)
2534 struct target_ops
*t
;
2536 /* If we're in breakpoints-always-inserted mode or if breakpoints
2537 are global across processes, we have to remove them before
2539 remove_breakpoints ();
2541 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2542 if (t
->to_disconnect
!= NULL
)
2545 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2547 t
->to_disconnect (t
, args
, from_tty
);
2555 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2557 struct target_ops
*t
;
2558 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2563 char *status_string
;
2564 char *options_string
;
2566 status_string
= target_waitstatus_to_string (status
);
2567 options_string
= target_options_to_string (options
);
2568 fprintf_unfiltered (gdb_stdlog
,
2569 "target_wait (%d, status, options={%s})"
2571 ptid_get_pid (ptid
), options_string
,
2572 ptid_get_pid (retval
), status_string
);
2573 xfree (status_string
);
2574 xfree (options_string
);
2581 target_pid_to_str (ptid_t ptid
)
2583 struct target_ops
*t
;
2585 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2587 if (t
->to_pid_to_str
!= NULL
)
2588 return (*t
->to_pid_to_str
) (t
, ptid
);
2591 return normal_pid_to_str (ptid
);
2595 target_thread_name (struct thread_info
*info
)
2597 return current_target
.to_thread_name (¤t_target
, info
);
2601 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2603 struct target_ops
*t
;
2605 target_dcache_invalidate ();
2607 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2609 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2610 ptid_get_pid (ptid
),
2611 step
? "step" : "continue",
2612 gdb_signal_to_name (signal
));
2614 registers_changed_ptid (ptid
);
2615 set_executing (ptid
, 1);
2616 set_running (ptid
, 1);
2617 clear_inline_frame_state (ptid
);
2621 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2623 struct target_ops
*t
;
2625 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2627 if (t
->to_pass_signals
!= NULL
)
2633 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2636 for (i
= 0; i
< numsigs
; i
++)
2637 if (pass_signals
[i
])
2638 fprintf_unfiltered (gdb_stdlog
, " %s",
2639 gdb_signal_to_name (i
));
2641 fprintf_unfiltered (gdb_stdlog
, " })\n");
2644 (*t
->to_pass_signals
) (t
, numsigs
, pass_signals
);
2651 target_program_signals (int numsigs
, unsigned char *program_signals
)
2653 struct target_ops
*t
;
2655 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2657 if (t
->to_program_signals
!= NULL
)
2663 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2666 for (i
= 0; i
< numsigs
; i
++)
2667 if (program_signals
[i
])
2668 fprintf_unfiltered (gdb_stdlog
, " %s",
2669 gdb_signal_to_name (i
));
2671 fprintf_unfiltered (gdb_stdlog
, " })\n");
2674 (*t
->to_program_signals
) (t
, numsigs
, program_signals
);
2680 /* Look through the list of possible targets for a target that can
2684 target_follow_fork (int follow_child
, int detach_fork
)
2686 struct target_ops
*t
;
2688 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2690 if (t
->to_follow_fork
!= NULL
)
2692 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2695 fprintf_unfiltered (gdb_stdlog
,
2696 "target_follow_fork (%d, %d) = %d\n",
2697 follow_child
, detach_fork
, retval
);
2702 /* Some target returned a fork event, but did not know how to follow it. */
2703 internal_error (__FILE__
, __LINE__
,
2704 _("could not find a target to follow fork"));
2708 target_mourn_inferior (void)
2710 struct target_ops
*t
;
2712 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2714 if (t
->to_mourn_inferior
!= NULL
)
2716 t
->to_mourn_inferior (t
);
2718 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2720 /* We no longer need to keep handles on any of the object files.
2721 Make sure to release them to avoid unnecessarily locking any
2722 of them while we're not actually debugging. */
2723 bfd_cache_close_all ();
2729 internal_error (__FILE__
, __LINE__
,
2730 _("could not find a target to follow mourn inferior"));
2733 /* Look for a target which can describe architectural features, starting
2734 from TARGET. If we find one, return its description. */
2736 const struct target_desc
*
2737 target_read_description (struct target_ops
*target
)
2739 struct target_ops
*t
;
2741 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2742 if (t
->to_read_description
!= NULL
)
2744 const struct target_desc
*tdesc
;
2746 tdesc
= t
->to_read_description (t
);
2754 /* The default implementation of to_search_memory.
2755 This implements a basic search of memory, reading target memory and
2756 performing the search here (as opposed to performing the search in on the
2757 target side with, for example, gdbserver). */
2760 simple_search_memory (struct target_ops
*ops
,
2761 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2762 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2763 CORE_ADDR
*found_addrp
)
2765 /* NOTE: also defined in find.c testcase. */
2766 #define SEARCH_CHUNK_SIZE 16000
2767 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2768 /* Buffer to hold memory contents for searching. */
2769 gdb_byte
*search_buf
;
2770 unsigned search_buf_size
;
2771 struct cleanup
*old_cleanups
;
2773 search_buf_size
= chunk_size
+ pattern_len
- 1;
2775 /* No point in trying to allocate a buffer larger than the search space. */
2776 if (search_space_len
< search_buf_size
)
2777 search_buf_size
= search_space_len
;
2779 search_buf
= malloc (search_buf_size
);
2780 if (search_buf
== NULL
)
2781 error (_("Unable to allocate memory to perform the search."));
2782 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2784 /* Prime the search buffer. */
2786 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2787 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2789 warning (_("Unable to access %s bytes of target "
2790 "memory at %s, halting search."),
2791 pulongest (search_buf_size
), hex_string (start_addr
));
2792 do_cleanups (old_cleanups
);
2796 /* Perform the search.
2798 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2799 When we've scanned N bytes we copy the trailing bytes to the start and
2800 read in another N bytes. */
2802 while (search_space_len
>= pattern_len
)
2804 gdb_byte
*found_ptr
;
2805 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2807 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2808 pattern
, pattern_len
);
2810 if (found_ptr
!= NULL
)
2812 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2814 *found_addrp
= found_addr
;
2815 do_cleanups (old_cleanups
);
2819 /* Not found in this chunk, skip to next chunk. */
2821 /* Don't let search_space_len wrap here, it's unsigned. */
2822 if (search_space_len
>= chunk_size
)
2823 search_space_len
-= chunk_size
;
2825 search_space_len
= 0;
2827 if (search_space_len
>= pattern_len
)
2829 unsigned keep_len
= search_buf_size
- chunk_size
;
2830 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2833 /* Copy the trailing part of the previous iteration to the front
2834 of the buffer for the next iteration. */
2835 gdb_assert (keep_len
== pattern_len
- 1);
2836 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2838 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2840 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2841 search_buf
+ keep_len
, read_addr
,
2842 nr_to_read
) != nr_to_read
)
2844 warning (_("Unable to access %s bytes of target "
2845 "memory at %s, halting search."),
2846 plongest (nr_to_read
),
2847 hex_string (read_addr
));
2848 do_cleanups (old_cleanups
);
2852 start_addr
+= chunk_size
;
2858 do_cleanups (old_cleanups
);
2862 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2863 sequence of bytes in PATTERN with length PATTERN_LEN.
2865 The result is 1 if found, 0 if not found, and -1 if there was an error
2866 requiring halting of the search (e.g. memory read error).
2867 If the pattern is found the address is recorded in FOUND_ADDRP. */
2870 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2871 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2872 CORE_ADDR
*found_addrp
)
2874 struct target_ops
*t
;
2877 /* We don't use INHERIT to set current_target.to_search_memory,
2878 so we have to scan the target stack and handle targetdebug
2882 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2883 hex_string (start_addr
));
2885 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2886 if (t
->to_search_memory
!= NULL
)
2891 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2892 pattern
, pattern_len
, found_addrp
);
2896 /* If a special version of to_search_memory isn't available, use the
2898 found
= simple_search_memory (current_target
.beneath
,
2899 start_addr
, search_space_len
,
2900 pattern
, pattern_len
, found_addrp
);
2904 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2909 /* Look through the currently pushed targets. If none of them will
2910 be able to restart the currently running process, issue an error
2914 target_require_runnable (void)
2916 struct target_ops
*t
;
2918 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2920 /* If this target knows how to create a new program, then
2921 assume we will still be able to after killing the current
2922 one. Either killing and mourning will not pop T, or else
2923 find_default_run_target will find it again. */
2924 if (t
->to_create_inferior
!= NULL
)
2927 /* Do not worry about thread_stratum targets that can not
2928 create inferiors. Assume they will be pushed again if
2929 necessary, and continue to the process_stratum. */
2930 if (t
->to_stratum
== thread_stratum
2931 || t
->to_stratum
== arch_stratum
)
2934 error (_("The \"%s\" target does not support \"run\". "
2935 "Try \"help target\" or \"continue\"."),
2939 /* This function is only called if the target is running. In that
2940 case there should have been a process_stratum target and it
2941 should either know how to create inferiors, or not... */
2942 internal_error (__FILE__
, __LINE__
, _("No targets found"));
2945 /* Look through the list of possible targets for a target that can
2946 execute a run or attach command without any other data. This is
2947 used to locate the default process stratum.
2949 If DO_MESG is not NULL, the result is always valid (error() is
2950 called for errors); else, return NULL on error. */
2952 static struct target_ops
*
2953 find_default_run_target (char *do_mesg
)
2955 struct target_ops
**t
;
2956 struct target_ops
*runable
= NULL
;
2961 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2964 if ((*t
)->to_can_run
&& target_can_run (*t
))
2974 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
2983 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
2985 struct target_ops
*t
;
2987 t
= find_default_run_target ("attach");
2988 (t
->to_attach
) (t
, args
, from_tty
);
2993 find_default_create_inferior (struct target_ops
*ops
,
2994 char *exec_file
, char *allargs
, char **env
,
2997 struct target_ops
*t
;
2999 t
= find_default_run_target ("run");
3000 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3005 find_default_can_async_p (struct target_ops
*ignore
)
3007 struct target_ops
*t
;
3009 /* This may be called before the target is pushed on the stack;
3010 look for the default process stratum. If there's none, gdb isn't
3011 configured with a native debugger, and target remote isn't
3013 t
= find_default_run_target (NULL
);
3014 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
3015 return (t
->to_can_async_p
) (t
);
3020 find_default_is_async_p (struct target_ops
*ignore
)
3022 struct target_ops
*t
;
3024 /* This may be called before the target is pushed on the stack;
3025 look for the default process stratum. If there's none, gdb isn't
3026 configured with a native debugger, and target remote isn't
3028 t
= find_default_run_target (NULL
);
3029 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
3030 return (t
->to_is_async_p
) (t
);
3035 find_default_supports_non_stop (struct target_ops
*self
)
3037 struct target_ops
*t
;
3039 t
= find_default_run_target (NULL
);
3040 if (t
&& t
->to_supports_non_stop
)
3041 return (t
->to_supports_non_stop
) (t
);
3046 target_supports_non_stop (void)
3048 struct target_ops
*t
;
3050 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3051 if (t
->to_supports_non_stop
)
3052 return t
->to_supports_non_stop (t
);
3057 /* Implement the "info proc" command. */
3060 target_info_proc (char *args
, enum info_proc_what what
)
3062 struct target_ops
*t
;
3064 /* If we're already connected to something that can get us OS
3065 related data, use it. Otherwise, try using the native
3067 if (current_target
.to_stratum
>= process_stratum
)
3068 t
= current_target
.beneath
;
3070 t
= find_default_run_target (NULL
);
3072 for (; t
!= NULL
; t
= t
->beneath
)
3074 if (t
->to_info_proc
!= NULL
)
3076 t
->to_info_proc (t
, args
, what
);
3079 fprintf_unfiltered (gdb_stdlog
,
3080 "target_info_proc (\"%s\", %d)\n", args
, what
);
3090 find_default_supports_disable_randomization (struct target_ops
*self
)
3092 struct target_ops
*t
;
3094 t
= find_default_run_target (NULL
);
3095 if (t
&& t
->to_supports_disable_randomization
)
3096 return (t
->to_supports_disable_randomization
) (t
);
3101 target_supports_disable_randomization (void)
3103 struct target_ops
*t
;
3105 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3106 if (t
->to_supports_disable_randomization
)
3107 return t
->to_supports_disable_randomization (t
);
3113 target_get_osdata (const char *type
)
3115 struct target_ops
*t
;
3117 /* If we're already connected to something that can get us OS
3118 related data, use it. Otherwise, try using the native
3120 if (current_target
.to_stratum
>= process_stratum
)
3121 t
= current_target
.beneath
;
3123 t
= find_default_run_target ("get OS data");
3128 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3131 /* Determine the current address space of thread PTID. */
3133 struct address_space
*
3134 target_thread_address_space (ptid_t ptid
)
3136 struct address_space
*aspace
;
3137 struct inferior
*inf
;
3138 struct target_ops
*t
;
3140 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3142 if (t
->to_thread_address_space
!= NULL
)
3144 aspace
= t
->to_thread_address_space (t
, ptid
);
3145 gdb_assert (aspace
);
3148 fprintf_unfiltered (gdb_stdlog
,
3149 "target_thread_address_space (%s) = %d\n",
3150 target_pid_to_str (ptid
),
3151 address_space_num (aspace
));
3156 /* Fall-back to the "main" address space of the inferior. */
3157 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3159 if (inf
== NULL
|| inf
->aspace
== NULL
)
3160 internal_error (__FILE__
, __LINE__
,
3161 _("Can't determine the current "
3162 "address space of thread %s\n"),
3163 target_pid_to_str (ptid
));
3169 /* Target file operations. */
3171 static struct target_ops
*
3172 default_fileio_target (void)
3174 /* If we're already connected to something that can perform
3175 file I/O, use it. Otherwise, try using the native target. */
3176 if (current_target
.to_stratum
>= process_stratum
)
3177 return current_target
.beneath
;
3179 return find_default_run_target ("file I/O");
3182 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3183 target file descriptor, or -1 if an error occurs (and set
3186 target_fileio_open (const char *filename
, int flags
, int mode
,
3189 struct target_ops
*t
;
3191 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3193 if (t
->to_fileio_open
!= NULL
)
3195 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3198 fprintf_unfiltered (gdb_stdlog
,
3199 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3200 filename
, flags
, mode
,
3201 fd
, fd
!= -1 ? 0 : *target_errno
);
3206 *target_errno
= FILEIO_ENOSYS
;
3210 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3211 Return the number of bytes written, or -1 if an error occurs
3212 (and set *TARGET_ERRNO). */
3214 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3215 ULONGEST offset
, int *target_errno
)
3217 struct target_ops
*t
;
3219 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3221 if (t
->to_fileio_pwrite
!= NULL
)
3223 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3227 fprintf_unfiltered (gdb_stdlog
,
3228 "target_fileio_pwrite (%d,...,%d,%s) "
3230 fd
, len
, pulongest (offset
),
3231 ret
, ret
!= -1 ? 0 : *target_errno
);
3236 *target_errno
= FILEIO_ENOSYS
;
3240 /* Read up to LEN bytes FD on the target into READ_BUF.
3241 Return the number of bytes read, or -1 if an error occurs
3242 (and set *TARGET_ERRNO). */
3244 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3245 ULONGEST offset
, int *target_errno
)
3247 struct target_ops
*t
;
3249 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3251 if (t
->to_fileio_pread
!= NULL
)
3253 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3257 fprintf_unfiltered (gdb_stdlog
,
3258 "target_fileio_pread (%d,...,%d,%s) "
3260 fd
, len
, pulongest (offset
),
3261 ret
, ret
!= -1 ? 0 : *target_errno
);
3266 *target_errno
= FILEIO_ENOSYS
;
3270 /* Close FD on the target. Return 0, or -1 if an error occurs
3271 (and set *TARGET_ERRNO). */
3273 target_fileio_close (int fd
, int *target_errno
)
3275 struct target_ops
*t
;
3277 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3279 if (t
->to_fileio_close
!= NULL
)
3281 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3284 fprintf_unfiltered (gdb_stdlog
,
3285 "target_fileio_close (%d) = %d (%d)\n",
3286 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3291 *target_errno
= FILEIO_ENOSYS
;
3295 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3296 occurs (and set *TARGET_ERRNO). */
3298 target_fileio_unlink (const char *filename
, int *target_errno
)
3300 struct target_ops
*t
;
3302 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3304 if (t
->to_fileio_unlink
!= NULL
)
3306 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3309 fprintf_unfiltered (gdb_stdlog
,
3310 "target_fileio_unlink (%s) = %d (%d)\n",
3311 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3316 *target_errno
= FILEIO_ENOSYS
;
3320 /* Read value of symbolic link FILENAME on the target. Return a
3321 null-terminated string allocated via xmalloc, or NULL if an error
3322 occurs (and set *TARGET_ERRNO). */
3324 target_fileio_readlink (const char *filename
, int *target_errno
)
3326 struct target_ops
*t
;
3328 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3330 if (t
->to_fileio_readlink
!= NULL
)
3332 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3335 fprintf_unfiltered (gdb_stdlog
,
3336 "target_fileio_readlink (%s) = %s (%d)\n",
3337 filename
, ret
? ret
: "(nil)",
3338 ret
? 0 : *target_errno
);
3343 *target_errno
= FILEIO_ENOSYS
;
3348 target_fileio_close_cleanup (void *opaque
)
3350 int fd
= *(int *) opaque
;
3353 target_fileio_close (fd
, &target_errno
);
3356 /* Read target file FILENAME. Store the result in *BUF_P and
3357 return the size of the transferred data. PADDING additional bytes are
3358 available in *BUF_P. This is a helper function for
3359 target_fileio_read_alloc; see the declaration of that function for more
3363 target_fileio_read_alloc_1 (const char *filename
,
3364 gdb_byte
**buf_p
, int padding
)
3366 struct cleanup
*close_cleanup
;
3367 size_t buf_alloc
, buf_pos
;
3373 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3377 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3379 /* Start by reading up to 4K at a time. The target will throttle
3380 this number down if necessary. */
3382 buf
= xmalloc (buf_alloc
);
3386 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3387 buf_alloc
- buf_pos
- padding
, buf_pos
,
3391 /* An error occurred. */
3392 do_cleanups (close_cleanup
);
3398 /* Read all there was. */
3399 do_cleanups (close_cleanup
);
3409 /* If the buffer is filling up, expand it. */
3410 if (buf_alloc
< buf_pos
* 2)
3413 buf
= xrealloc (buf
, buf_alloc
);
3420 /* Read target file FILENAME. Store the result in *BUF_P and return
3421 the size of the transferred data. See the declaration in "target.h"
3422 function for more information about the return value. */
3425 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3427 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3430 /* Read target file FILENAME. The result is NUL-terminated and
3431 returned as a string, allocated using xmalloc. If an error occurs
3432 or the transfer is unsupported, NULL is returned. Empty objects
3433 are returned as allocated but empty strings. A warning is issued
3434 if the result contains any embedded NUL bytes. */
3437 target_fileio_read_stralloc (const char *filename
)
3441 LONGEST i
, transferred
;
3443 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3444 bufstr
= (char *) buffer
;
3446 if (transferred
< 0)
3449 if (transferred
== 0)
3450 return xstrdup ("");
3452 bufstr
[transferred
] = 0;
3454 /* Check for embedded NUL bytes; but allow trailing NULs. */
3455 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3458 warning (_("target file %s "
3459 "contained unexpected null characters"),
3469 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3470 CORE_ADDR addr
, int len
)
3472 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3476 default_watchpoint_addr_within_range (struct target_ops
*target
,
3478 CORE_ADDR start
, int length
)
3480 return addr
>= start
&& addr
< start
+ length
;
3483 static struct gdbarch
*
3484 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3486 return target_gdbarch ();
3502 * Find the next target down the stack from the specified target.
3506 find_target_beneath (struct target_ops
*t
)
3514 find_target_at (enum strata stratum
)
3516 struct target_ops
*t
;
3518 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3519 if (t
->to_stratum
== stratum
)
3526 /* The inferior process has died. Long live the inferior! */
3529 generic_mourn_inferior (void)
3533 ptid
= inferior_ptid
;
3534 inferior_ptid
= null_ptid
;
3536 /* Mark breakpoints uninserted in case something tries to delete a
3537 breakpoint while we delete the inferior's threads (which would
3538 fail, since the inferior is long gone). */
3539 mark_breakpoints_out ();
3541 if (!ptid_equal (ptid
, null_ptid
))
3543 int pid
= ptid_get_pid (ptid
);
3544 exit_inferior (pid
);
3547 /* Note this wipes step-resume breakpoints, so needs to be done
3548 after exit_inferior, which ends up referencing the step-resume
3549 breakpoints through clear_thread_inferior_resources. */
3550 breakpoint_init_inferior (inf_exited
);
3552 registers_changed ();
3554 reopen_exec_file ();
3555 reinit_frame_cache ();
3557 if (deprecated_detach_hook
)
3558 deprecated_detach_hook ();
3561 /* Convert a normal process ID to a string. Returns the string in a
3565 normal_pid_to_str (ptid_t ptid
)
3567 static char buf
[32];
3569 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3574 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3576 return normal_pid_to_str (ptid
);
3579 /* Error-catcher for target_find_memory_regions. */
3581 dummy_find_memory_regions (struct target_ops
*self
,
3582 find_memory_region_ftype ignore1
, void *ignore2
)
3584 error (_("Command not implemented for this target."));
3588 /* Error-catcher for target_make_corefile_notes. */
3590 dummy_make_corefile_notes (struct target_ops
*self
,
3591 bfd
*ignore1
, int *ignore2
)
3593 error (_("Command not implemented for this target."));
3597 /* Set up the handful of non-empty slots needed by the dummy target
3601 init_dummy_target (void)
3603 dummy_target
.to_shortname
= "None";
3604 dummy_target
.to_longname
= "None";
3605 dummy_target
.to_doc
= "";
3606 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3607 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3608 dummy_target
.to_supports_disable_randomization
3609 = find_default_supports_disable_randomization
;
3610 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3611 dummy_target
.to_stratum
= dummy_stratum
;
3612 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3613 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3614 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3615 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3616 dummy_target
.to_has_execution
3617 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3618 dummy_target
.to_magic
= OPS_MAGIC
;
3620 install_dummy_methods (&dummy_target
);
3624 debug_to_open (char *args
, int from_tty
)
3626 debug_target
.to_open (args
, from_tty
);
3628 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3632 target_close (struct target_ops
*targ
)
3634 gdb_assert (!target_is_pushed (targ
));
3636 if (targ
->to_xclose
!= NULL
)
3637 targ
->to_xclose (targ
);
3638 else if (targ
->to_close
!= NULL
)
3639 targ
->to_close (targ
);
3642 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3646 target_attach (char *args
, int from_tty
)
3648 current_target
.to_attach (¤t_target
, args
, from_tty
);
3650 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3655 target_thread_alive (ptid_t ptid
)
3657 struct target_ops
*t
;
3659 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3661 if (t
->to_thread_alive
!= NULL
)
3665 retval
= t
->to_thread_alive (t
, ptid
);
3667 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3668 ptid_get_pid (ptid
), retval
);
3678 target_find_new_threads (void)
3680 struct target_ops
*t
;
3682 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3684 if (t
->to_find_new_threads
!= NULL
)
3686 t
->to_find_new_threads (t
);
3688 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3696 target_stop (ptid_t ptid
)
3700 warning (_("May not interrupt or stop the target, ignoring attempt"));
3704 (*current_target
.to_stop
) (¤t_target
, ptid
);
3708 debug_to_post_attach (struct target_ops
*self
, int pid
)
3710 debug_target
.to_post_attach (&debug_target
, pid
);
3712 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3715 /* Concatenate ELEM to LIST, a comma separate list, and return the
3716 result. The LIST incoming argument is released. */
3719 str_comma_list_concat_elem (char *list
, const char *elem
)
3722 return xstrdup (elem
);
3724 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3727 /* Helper for target_options_to_string. If OPT is present in
3728 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3729 Returns the new resulting string. OPT is removed from
3733 do_option (int *target_options
, char *ret
,
3734 int opt
, char *opt_str
)
3736 if ((*target_options
& opt
) != 0)
3738 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3739 *target_options
&= ~opt
;
3746 target_options_to_string (int target_options
)
3750 #define DO_TARG_OPTION(OPT) \
3751 ret = do_option (&target_options, ret, OPT, #OPT)
3753 DO_TARG_OPTION (TARGET_WNOHANG
);
3755 if (target_options
!= 0)
3756 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3764 debug_print_register (const char * func
,
3765 struct regcache
*regcache
, int regno
)
3767 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3769 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3770 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3771 && gdbarch_register_name (gdbarch
, regno
) != NULL
3772 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3773 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3774 gdbarch_register_name (gdbarch
, regno
));
3776 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3777 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3779 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3780 int i
, size
= register_size (gdbarch
, regno
);
3781 gdb_byte buf
[MAX_REGISTER_SIZE
];
3783 regcache_raw_collect (regcache
, regno
, buf
);
3784 fprintf_unfiltered (gdb_stdlog
, " = ");
3785 for (i
= 0; i
< size
; i
++)
3787 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3789 if (size
<= sizeof (LONGEST
))
3791 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3793 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3794 core_addr_to_string_nz (val
), plongest (val
));
3797 fprintf_unfiltered (gdb_stdlog
, "\n");
3801 target_fetch_registers (struct regcache
*regcache
, int regno
)
3803 struct target_ops
*t
;
3805 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3807 if (t
->to_fetch_registers
!= NULL
)
3809 t
->to_fetch_registers (t
, regcache
, regno
);
3811 debug_print_register ("target_fetch_registers", regcache
, regno
);
3818 target_store_registers (struct regcache
*regcache
, int regno
)
3820 struct target_ops
*t
;
3822 if (!may_write_registers
)
3823 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3825 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3828 debug_print_register ("target_store_registers", regcache
, regno
);
3833 target_core_of_thread (ptid_t ptid
)
3835 struct target_ops
*t
;
3837 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3839 if (t
->to_core_of_thread
!= NULL
)
3841 int retval
= t
->to_core_of_thread (t
, ptid
);
3844 fprintf_unfiltered (gdb_stdlog
,
3845 "target_core_of_thread (%d) = %d\n",
3846 ptid_get_pid (ptid
), retval
);
3855 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3857 struct target_ops
*t
;
3859 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3861 if (t
->to_verify_memory
!= NULL
)
3863 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3866 fprintf_unfiltered (gdb_stdlog
,
3867 "target_verify_memory (%s, %s) = %d\n",
3868 paddress (target_gdbarch (), memaddr
),
3878 /* The documentation for this function is in its prototype declaration in
3882 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3884 struct target_ops
*t
;
3886 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3887 if (t
->to_insert_mask_watchpoint
!= NULL
)
3891 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
3894 fprintf_unfiltered (gdb_stdlog
, "\
3895 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3896 core_addr_to_string (addr
),
3897 core_addr_to_string (mask
), rw
, ret
);
3905 /* The documentation for this function is in its prototype declaration in
3909 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3911 struct target_ops
*t
;
3913 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3914 if (t
->to_remove_mask_watchpoint
!= NULL
)
3918 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
3921 fprintf_unfiltered (gdb_stdlog
, "\
3922 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3923 core_addr_to_string (addr
),
3924 core_addr_to_string (mask
), rw
, ret
);
3932 /* The documentation for this function is in its prototype declaration
3936 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
3938 struct target_ops
*t
;
3940 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3941 if (t
->to_masked_watch_num_registers
!= NULL
)
3942 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
3947 /* The documentation for this function is in its prototype declaration
3951 target_ranged_break_num_registers (void)
3953 struct target_ops
*t
;
3955 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3956 if (t
->to_ranged_break_num_registers
!= NULL
)
3957 return t
->to_ranged_break_num_registers (t
);
3964 struct btrace_target_info
*
3965 target_enable_btrace (ptid_t ptid
)
3967 struct target_ops
*t
;
3969 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3970 if (t
->to_enable_btrace
!= NULL
)
3971 return t
->to_enable_btrace (t
, ptid
);
3980 target_disable_btrace (struct btrace_target_info
*btinfo
)
3982 struct target_ops
*t
;
3984 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3985 if (t
->to_disable_btrace
!= NULL
)
3987 t
->to_disable_btrace (t
, btinfo
);
3997 target_teardown_btrace (struct btrace_target_info
*btinfo
)
3999 struct target_ops
*t
;
4001 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4002 if (t
->to_teardown_btrace
!= NULL
)
4004 t
->to_teardown_btrace (t
, btinfo
);
4014 target_read_btrace (VEC (btrace_block_s
) **btrace
,
4015 struct btrace_target_info
*btinfo
,
4016 enum btrace_read_type type
)
4018 struct target_ops
*t
;
4020 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4021 if (t
->to_read_btrace
!= NULL
)
4022 return t
->to_read_btrace (t
, btrace
, btinfo
, type
);
4025 return BTRACE_ERR_NOT_SUPPORTED
;
4031 target_stop_recording (void)
4033 struct target_ops
*t
;
4035 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4036 if (t
->to_stop_recording
!= NULL
)
4038 t
->to_stop_recording (t
);
4042 /* This is optional. */
4048 target_info_record (void)
4050 struct target_ops
*t
;
4052 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4053 if (t
->to_info_record
!= NULL
)
4055 t
->to_info_record (t
);
4065 target_save_record (const char *filename
)
4067 struct target_ops
*t
;
4069 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4070 if (t
->to_save_record
!= NULL
)
4072 t
->to_save_record (t
, filename
);
4082 target_supports_delete_record (void)
4084 struct target_ops
*t
;
4086 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4087 if (t
->to_delete_record
!= NULL
)
4096 target_delete_record (void)
4098 struct target_ops
*t
;
4100 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4101 if (t
->to_delete_record
!= NULL
)
4103 t
->to_delete_record (t
);
4113 target_record_is_replaying (void)
4115 struct target_ops
*t
;
4117 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4118 if (t
->to_record_is_replaying
!= NULL
)
4119 return t
->to_record_is_replaying (t
);
4127 target_goto_record_begin (void)
4129 struct target_ops
*t
;
4131 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4132 if (t
->to_goto_record_begin
!= NULL
)
4134 t
->to_goto_record_begin (t
);
4144 target_goto_record_end (void)
4146 struct target_ops
*t
;
4148 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4149 if (t
->to_goto_record_end
!= NULL
)
4151 t
->to_goto_record_end (t
);
4161 target_goto_record (ULONGEST insn
)
4163 struct target_ops
*t
;
4165 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4166 if (t
->to_goto_record
!= NULL
)
4168 t
->to_goto_record (t
, insn
);
4178 target_insn_history (int size
, int flags
)
4180 struct target_ops
*t
;
4182 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4183 if (t
->to_insn_history
!= NULL
)
4185 t
->to_insn_history (t
, size
, flags
);
4195 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4197 struct target_ops
*t
;
4199 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4200 if (t
->to_insn_history_from
!= NULL
)
4202 t
->to_insn_history_from (t
, from
, size
, flags
);
4212 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4214 struct target_ops
*t
;
4216 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4217 if (t
->to_insn_history_range
!= NULL
)
4219 t
->to_insn_history_range (t
, begin
, end
, flags
);
4229 target_call_history (int size
, int flags
)
4231 struct target_ops
*t
;
4233 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4234 if (t
->to_call_history
!= NULL
)
4236 t
->to_call_history (t
, size
, flags
);
4246 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4248 struct target_ops
*t
;
4250 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4251 if (t
->to_call_history_from
!= NULL
)
4253 t
->to_call_history_from (t
, begin
, size
, flags
);
4263 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4265 struct target_ops
*t
;
4267 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4268 if (t
->to_call_history_range
!= NULL
)
4270 t
->to_call_history_range (t
, begin
, end
, flags
);
4278 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
4280 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
4282 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4287 const struct frame_unwind
*
4288 target_get_unwinder (void)
4290 struct target_ops
*t
;
4292 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4293 if (t
->to_get_unwinder
!= NULL
)
4294 return t
->to_get_unwinder
;
4301 const struct frame_unwind
*
4302 target_get_tailcall_unwinder (void)
4304 struct target_ops
*t
;
4306 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4307 if (t
->to_get_tailcall_unwinder
!= NULL
)
4308 return t
->to_get_tailcall_unwinder
;
4316 forward_target_decr_pc_after_break (struct target_ops
*ops
,
4317 struct gdbarch
*gdbarch
)
4319 for (; ops
!= NULL
; ops
= ops
->beneath
)
4320 if (ops
->to_decr_pc_after_break
!= NULL
)
4321 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
4323 return gdbarch_decr_pc_after_break (gdbarch
);
4329 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
4331 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
4335 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4336 int write
, struct mem_attrib
*attrib
,
4337 struct target_ops
*target
)
4341 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4344 fprintf_unfiltered (gdb_stdlog
,
4345 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4346 paddress (target_gdbarch (), memaddr
), len
,
4347 write
? "write" : "read", retval
);
4353 fputs_unfiltered (", bytes =", gdb_stdlog
);
4354 for (i
= 0; i
< retval
; i
++)
4356 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4358 if (targetdebug
< 2 && i
> 0)
4360 fprintf_unfiltered (gdb_stdlog
, " ...");
4363 fprintf_unfiltered (gdb_stdlog
, "\n");
4366 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4370 fputc_unfiltered ('\n', gdb_stdlog
);
4376 debug_to_files_info (struct target_ops
*target
)
4378 debug_target
.to_files_info (target
);
4380 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4384 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4385 struct bp_target_info
*bp_tgt
)
4389 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4391 fprintf_unfiltered (gdb_stdlog
,
4392 "target_insert_breakpoint (%s, xxx) = %ld\n",
4393 core_addr_to_string (bp_tgt
->placed_address
),
4394 (unsigned long) retval
);
4399 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4400 struct bp_target_info
*bp_tgt
)
4404 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4406 fprintf_unfiltered (gdb_stdlog
,
4407 "target_remove_breakpoint (%s, xxx) = %ld\n",
4408 core_addr_to_string (bp_tgt
->placed_address
),
4409 (unsigned long) retval
);
4414 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4415 int type
, int cnt
, int from_tty
)
4419 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4420 type
, cnt
, from_tty
);
4422 fprintf_unfiltered (gdb_stdlog
,
4423 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4424 (unsigned long) type
,
4425 (unsigned long) cnt
,
4426 (unsigned long) from_tty
,
4427 (unsigned long) retval
);
4432 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4433 CORE_ADDR addr
, int len
)
4437 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4440 fprintf_unfiltered (gdb_stdlog
,
4441 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4442 core_addr_to_string (addr
), (unsigned long) len
,
4443 core_addr_to_string (retval
));
4448 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4449 CORE_ADDR addr
, int len
, int rw
,
4450 struct expression
*cond
)
4454 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4458 fprintf_unfiltered (gdb_stdlog
,
4459 "target_can_accel_watchpoint_condition "
4460 "(%s, %d, %d, %s) = %ld\n",
4461 core_addr_to_string (addr
), len
, rw
,
4462 host_address_to_string (cond
), (unsigned long) retval
);
4467 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4471 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4473 fprintf_unfiltered (gdb_stdlog
,
4474 "target_stopped_by_watchpoint () = %ld\n",
4475 (unsigned long) retval
);
4480 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4484 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4486 fprintf_unfiltered (gdb_stdlog
,
4487 "target_stopped_data_address ([%s]) = %ld\n",
4488 core_addr_to_string (*addr
),
4489 (unsigned long)retval
);
4494 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4496 CORE_ADDR start
, int length
)
4500 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4503 fprintf_filtered (gdb_stdlog
,
4504 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4505 core_addr_to_string (addr
), core_addr_to_string (start
),
4511 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4512 struct gdbarch
*gdbarch
,
4513 struct bp_target_info
*bp_tgt
)
4517 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4520 fprintf_unfiltered (gdb_stdlog
,
4521 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4522 core_addr_to_string (bp_tgt
->placed_address
),
4523 (unsigned long) retval
);
4528 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4529 struct gdbarch
*gdbarch
,
4530 struct bp_target_info
*bp_tgt
)
4534 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4537 fprintf_unfiltered (gdb_stdlog
,
4538 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4539 core_addr_to_string (bp_tgt
->placed_address
),
4540 (unsigned long) retval
);
4545 debug_to_insert_watchpoint (struct target_ops
*self
,
4546 CORE_ADDR addr
, int len
, int type
,
4547 struct expression
*cond
)
4551 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4552 addr
, len
, type
, cond
);
4554 fprintf_unfiltered (gdb_stdlog
,
4555 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4556 core_addr_to_string (addr
), len
, type
,
4557 host_address_to_string (cond
), (unsigned long) retval
);
4562 debug_to_remove_watchpoint (struct target_ops
*self
,
4563 CORE_ADDR addr
, int len
, int type
,
4564 struct expression
*cond
)
4568 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4569 addr
, len
, type
, cond
);
4571 fprintf_unfiltered (gdb_stdlog
,
4572 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4573 core_addr_to_string (addr
), len
, type
,
4574 host_address_to_string (cond
), (unsigned long) retval
);
4579 debug_to_terminal_init (struct target_ops
*self
)
4581 debug_target
.to_terminal_init (&debug_target
);
4583 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4587 debug_to_terminal_inferior (struct target_ops
*self
)
4589 debug_target
.to_terminal_inferior (&debug_target
);
4591 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4595 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4597 debug_target
.to_terminal_ours_for_output (&debug_target
);
4599 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4603 debug_to_terminal_ours (struct target_ops
*self
)
4605 debug_target
.to_terminal_ours (&debug_target
);
4607 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4611 debug_to_terminal_save_ours (struct target_ops
*self
)
4613 debug_target
.to_terminal_save_ours (&debug_target
);
4615 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4619 debug_to_terminal_info (struct target_ops
*self
,
4620 const char *arg
, int from_tty
)
4622 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4624 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4629 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4631 debug_target
.to_load (&debug_target
, args
, from_tty
);
4633 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4637 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4639 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4641 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4642 ptid_get_pid (ptid
));
4646 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4650 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4652 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4659 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4663 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4665 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4672 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4676 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4678 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4685 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4689 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4691 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4698 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4702 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4704 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4711 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4715 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4717 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4724 debug_to_has_exited (struct target_ops
*self
,
4725 int pid
, int wait_status
, int *exit_status
)
4729 has_exited
= debug_target
.to_has_exited (&debug_target
,
4730 pid
, wait_status
, exit_status
);
4732 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4733 pid
, wait_status
, *exit_status
, has_exited
);
4739 debug_to_can_run (struct target_ops
*self
)
4743 retval
= debug_target
.to_can_run (&debug_target
);
4745 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4750 static struct gdbarch
*
4751 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4753 struct gdbarch
*retval
;
4755 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4757 fprintf_unfiltered (gdb_stdlog
,
4758 "target_thread_architecture (%s) = %s [%s]\n",
4759 target_pid_to_str (ptid
),
4760 host_address_to_string (retval
),
4761 gdbarch_bfd_arch_info (retval
)->printable_name
);
4766 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4768 debug_target
.to_stop (&debug_target
, ptid
);
4770 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4771 target_pid_to_str (ptid
));
4775 debug_to_rcmd (struct target_ops
*self
, char *command
,
4776 struct ui_file
*outbuf
)
4778 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4779 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4783 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4787 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4789 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4796 setup_target_debug (void)
4798 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4800 current_target
.to_open
= debug_to_open
;
4801 current_target
.to_post_attach
= debug_to_post_attach
;
4802 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4803 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4804 current_target
.to_files_info
= debug_to_files_info
;
4805 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4806 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4807 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4808 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4809 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4810 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4811 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4812 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4813 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4814 current_target
.to_watchpoint_addr_within_range
4815 = debug_to_watchpoint_addr_within_range
;
4816 current_target
.to_region_ok_for_hw_watchpoint
4817 = debug_to_region_ok_for_hw_watchpoint
;
4818 current_target
.to_can_accel_watchpoint_condition
4819 = debug_to_can_accel_watchpoint_condition
;
4820 current_target
.to_terminal_init
= debug_to_terminal_init
;
4821 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4822 current_target
.to_terminal_ours_for_output
4823 = debug_to_terminal_ours_for_output
;
4824 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4825 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4826 current_target
.to_terminal_info
= debug_to_terminal_info
;
4827 current_target
.to_load
= debug_to_load
;
4828 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4829 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4830 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4831 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4832 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4833 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4834 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4835 current_target
.to_has_exited
= debug_to_has_exited
;
4836 current_target
.to_can_run
= debug_to_can_run
;
4837 current_target
.to_stop
= debug_to_stop
;
4838 current_target
.to_rcmd
= debug_to_rcmd
;
4839 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4840 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4844 static char targ_desc
[] =
4845 "Names of targets and files being debugged.\nShows the entire \
4846 stack of targets currently in use (including the exec-file,\n\
4847 core-file, and process, if any), as well as the symbol file name.";
4850 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4852 error (_("\"monitor\" command not supported by this target."));
4856 do_monitor_command (char *cmd
,
4859 target_rcmd (cmd
, gdb_stdtarg
);
4862 /* Print the name of each layers of our target stack. */
4865 maintenance_print_target_stack (char *cmd
, int from_tty
)
4867 struct target_ops
*t
;
4869 printf_filtered (_("The current target stack is:\n"));
4871 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4873 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4877 /* Controls if async mode is permitted. */
4878 int target_async_permitted
= 0;
4880 /* The set command writes to this variable. If the inferior is
4881 executing, target_async_permitted is *not* updated. */
4882 static int target_async_permitted_1
= 0;
4885 set_target_async_command (char *args
, int from_tty
,
4886 struct cmd_list_element
*c
)
4888 if (have_live_inferiors ())
4890 target_async_permitted_1
= target_async_permitted
;
4891 error (_("Cannot change this setting while the inferior is running."));
4894 target_async_permitted
= target_async_permitted_1
;
4898 show_target_async_command (struct ui_file
*file
, int from_tty
,
4899 struct cmd_list_element
*c
,
4902 fprintf_filtered (file
,
4903 _("Controlling the inferior in "
4904 "asynchronous mode is %s.\n"), value
);
4907 /* Temporary copies of permission settings. */
4909 static int may_write_registers_1
= 1;
4910 static int may_write_memory_1
= 1;
4911 static int may_insert_breakpoints_1
= 1;
4912 static int may_insert_tracepoints_1
= 1;
4913 static int may_insert_fast_tracepoints_1
= 1;
4914 static int may_stop_1
= 1;
4916 /* Make the user-set values match the real values again. */
4919 update_target_permissions (void)
4921 may_write_registers_1
= may_write_registers
;
4922 may_write_memory_1
= may_write_memory
;
4923 may_insert_breakpoints_1
= may_insert_breakpoints
;
4924 may_insert_tracepoints_1
= may_insert_tracepoints
;
4925 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4926 may_stop_1
= may_stop
;
4929 /* The one function handles (most of) the permission flags in the same
4933 set_target_permissions (char *args
, int from_tty
,
4934 struct cmd_list_element
*c
)
4936 if (target_has_execution
)
4938 update_target_permissions ();
4939 error (_("Cannot change this setting while the inferior is running."));
4942 /* Make the real values match the user-changed values. */
4943 may_write_registers
= may_write_registers_1
;
4944 may_insert_breakpoints
= may_insert_breakpoints_1
;
4945 may_insert_tracepoints
= may_insert_tracepoints_1
;
4946 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4947 may_stop
= may_stop_1
;
4948 update_observer_mode ();
4951 /* Set memory write permission independently of observer mode. */
4954 set_write_memory_permission (char *args
, int from_tty
,
4955 struct cmd_list_element
*c
)
4957 /* Make the real values match the user-changed values. */
4958 may_write_memory
= may_write_memory_1
;
4959 update_observer_mode ();
4964 initialize_targets (void)
4966 init_dummy_target ();
4967 push_target (&dummy_target
);
4969 add_info ("target", target_info
, targ_desc
);
4970 add_info ("files", target_info
, targ_desc
);
4972 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
4973 Set target debugging."), _("\
4974 Show target debugging."), _("\
4975 When non-zero, target debugging is enabled. Higher numbers are more\n\
4976 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4980 &setdebuglist
, &showdebuglist
);
4982 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
4983 &trust_readonly
, _("\
4984 Set mode for reading from readonly sections."), _("\
4985 Show mode for reading from readonly sections."), _("\
4986 When this mode is on, memory reads from readonly sections (such as .text)\n\
4987 will be read from the object file instead of from the target. This will\n\
4988 result in significant performance improvement for remote targets."),
4990 show_trust_readonly
,
4991 &setlist
, &showlist
);
4993 add_com ("monitor", class_obscure
, do_monitor_command
,
4994 _("Send a command to the remote monitor (remote targets only)."));
4996 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
4997 _("Print the name of each layer of the internal target stack."),
4998 &maintenanceprintlist
);
5000 add_setshow_boolean_cmd ("target-async", no_class
,
5001 &target_async_permitted_1
, _("\
5002 Set whether gdb controls the inferior in asynchronous mode."), _("\
5003 Show whether gdb controls the inferior in asynchronous mode."), _("\
5004 Tells gdb whether to control the inferior in asynchronous mode."),
5005 set_target_async_command
,
5006 show_target_async_command
,
5010 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5011 &may_write_registers_1
, _("\
5012 Set permission to write into registers."), _("\
5013 Show permission to write into registers."), _("\
5014 When this permission is on, GDB may write into the target's registers.\n\
5015 Otherwise, any sort of write attempt will result in an error."),
5016 set_target_permissions
, NULL
,
5017 &setlist
, &showlist
);
5019 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5020 &may_write_memory_1
, _("\
5021 Set permission to write into target memory."), _("\
5022 Show permission to write into target memory."), _("\
5023 When this permission is on, GDB may write into the target's memory.\n\
5024 Otherwise, any sort of write attempt will result in an error."),
5025 set_write_memory_permission
, NULL
,
5026 &setlist
, &showlist
);
5028 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5029 &may_insert_breakpoints_1
, _("\
5030 Set permission to insert breakpoints in the target."), _("\
5031 Show permission to insert breakpoints in the target."), _("\
5032 When this permission is on, GDB may insert breakpoints in the program.\n\
5033 Otherwise, any sort of insertion attempt will result in an error."),
5034 set_target_permissions
, NULL
,
5035 &setlist
, &showlist
);
5037 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5038 &may_insert_tracepoints_1
, _("\
5039 Set permission to insert tracepoints in the target."), _("\
5040 Show permission to insert tracepoints in the target."), _("\
5041 When this permission is on, GDB may insert tracepoints in the program.\n\
5042 Otherwise, any sort of insertion attempt will result in an error."),
5043 set_target_permissions
, NULL
,
5044 &setlist
, &showlist
);
5046 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5047 &may_insert_fast_tracepoints_1
, _("\
5048 Set permission to insert fast tracepoints in the target."), _("\
5049 Show permission to insert fast tracepoints in the target."), _("\
5050 When this permission is on, GDB may insert fast tracepoints.\n\
5051 Otherwise, any sort of insertion attempt will result in an error."),
5052 set_target_permissions
, NULL
,
5053 &setlist
, &showlist
);
5055 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5057 Set permission to interrupt or signal the target."), _("\
5058 Show permission to interrupt or signal the target."), _("\
5059 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5060 Otherwise, any attempt to interrupt or stop will be ignored."),
5061 set_target_permissions
, NULL
,
5062 &setlist
, &showlist
);