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 int default_follow_fork (struct target_ops
*self
, int follow_child
,
66 static void default_mourn_inferior (struct target_ops
*self
);
68 static void tcomplain (void) ATTRIBUTE_NORETURN
;
70 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
72 static int return_zero (void);
74 void target_ignore (void);
76 static void target_command (char *, int);
78 static struct target_ops
*find_default_run_target (char *);
80 static target_xfer_partial_ftype default_xfer_partial
;
82 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
85 static int dummy_find_memory_regions (struct target_ops
*self
,
86 find_memory_region_ftype ignore1
,
89 static char *dummy_make_corefile_notes (struct target_ops
*self
,
90 bfd
*ignore1
, int *ignore2
);
92 static int find_default_can_async_p (struct target_ops
*ignore
);
94 static int find_default_is_async_p (struct target_ops
*ignore
);
96 static enum exec_direction_kind default_execution_direction
97 (struct target_ops
*self
);
99 #include "target-delegates.c"
101 static void init_dummy_target (void);
103 static struct target_ops debug_target
;
105 static void debug_to_open (char *, int);
107 static void debug_to_prepare_to_store (struct target_ops
*self
,
110 static void debug_to_files_info (struct target_ops
*);
112 static int debug_to_insert_breakpoint (struct target_ops
*, struct gdbarch
*,
113 struct bp_target_info
*);
115 static int debug_to_remove_breakpoint (struct target_ops
*, struct gdbarch
*,
116 struct bp_target_info
*);
118 static int debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
121 static int debug_to_insert_hw_breakpoint (struct target_ops
*self
,
123 struct bp_target_info
*);
125 static int debug_to_remove_hw_breakpoint (struct target_ops
*self
,
127 struct bp_target_info
*);
129 static int debug_to_insert_watchpoint (struct target_ops
*self
,
131 struct expression
*);
133 static int debug_to_remove_watchpoint (struct target_ops
*self
,
135 struct expression
*);
137 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
139 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
140 CORE_ADDR
, CORE_ADDR
, int);
142 static int debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
145 static int debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
147 struct expression
*);
149 static void debug_to_terminal_init (struct target_ops
*self
);
151 static void debug_to_terminal_inferior (struct target_ops
*self
);
153 static void debug_to_terminal_ours_for_output (struct target_ops
*self
);
155 static void debug_to_terminal_save_ours (struct target_ops
*self
);
157 static void debug_to_terminal_ours (struct target_ops
*self
);
159 static void debug_to_load (struct target_ops
*self
, char *, int);
161 static int debug_to_can_run (struct target_ops
*self
);
163 static void debug_to_stop (struct target_ops
*self
, ptid_t
);
165 /* Pointer to array of target architecture structures; the size of the
166 array; the current index into the array; the allocated size of the
168 struct target_ops
**target_structs
;
169 unsigned target_struct_size
;
170 unsigned target_struct_allocsize
;
171 #define DEFAULT_ALLOCSIZE 10
173 /* The initial current target, so that there is always a semi-valid
176 static struct target_ops dummy_target
;
178 /* Top of target stack. */
180 static struct target_ops
*target_stack
;
182 /* The target structure we are currently using to talk to a process
183 or file or whatever "inferior" we have. */
185 struct target_ops current_target
;
187 /* Command list for target. */
189 static struct cmd_list_element
*targetlist
= NULL
;
191 /* Nonzero if we should trust readonly sections from the
192 executable when reading memory. */
194 static int trust_readonly
= 0;
196 /* Nonzero if we should show true memory content including
197 memory breakpoint inserted by gdb. */
199 static int show_memory_breakpoints
= 0;
201 /* These globals control whether GDB attempts to perform these
202 operations; they are useful for targets that need to prevent
203 inadvertant disruption, such as in non-stop mode. */
205 int may_write_registers
= 1;
207 int may_write_memory
= 1;
209 int may_insert_breakpoints
= 1;
211 int may_insert_tracepoints
= 1;
213 int may_insert_fast_tracepoints
= 1;
217 /* Non-zero if we want to see trace of target level stuff. */
219 static unsigned int targetdebug
= 0;
221 show_targetdebug (struct ui_file
*file
, int from_tty
,
222 struct cmd_list_element
*c
, const char *value
)
224 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
227 static void setup_target_debug (void);
229 /* The user just typed 'target' without the name of a target. */
232 target_command (char *arg
, int from_tty
)
234 fputs_filtered ("Argument required (target name). Try `help target'\n",
238 /* Default target_has_* methods for process_stratum targets. */
241 default_child_has_all_memory (struct target_ops
*ops
)
243 /* If no inferior selected, then we can't read memory here. */
244 if (ptid_equal (inferior_ptid
, null_ptid
))
251 default_child_has_memory (struct target_ops
*ops
)
253 /* If no inferior selected, then we can't read memory here. */
254 if (ptid_equal (inferior_ptid
, null_ptid
))
261 default_child_has_stack (struct target_ops
*ops
)
263 /* If no inferior selected, there's no stack. */
264 if (ptid_equal (inferior_ptid
, null_ptid
))
271 default_child_has_registers (struct target_ops
*ops
)
273 /* Can't read registers from no inferior. */
274 if (ptid_equal (inferior_ptid
, null_ptid
))
281 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
283 /* If there's no thread selected, then we can't make it run through
285 if (ptid_equal (the_ptid
, null_ptid
))
293 target_has_all_memory_1 (void)
295 struct target_ops
*t
;
297 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
298 if (t
->to_has_all_memory (t
))
305 target_has_memory_1 (void)
307 struct target_ops
*t
;
309 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
310 if (t
->to_has_memory (t
))
317 target_has_stack_1 (void)
319 struct target_ops
*t
;
321 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
322 if (t
->to_has_stack (t
))
329 target_has_registers_1 (void)
331 struct target_ops
*t
;
333 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
334 if (t
->to_has_registers (t
))
341 target_has_execution_1 (ptid_t the_ptid
)
343 struct target_ops
*t
;
345 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
346 if (t
->to_has_execution (t
, the_ptid
))
353 target_has_execution_current (void)
355 return target_has_execution_1 (inferior_ptid
);
358 /* Complete initialization of T. This ensures that various fields in
359 T are set, if needed by the target implementation. */
362 complete_target_initialization (struct target_ops
*t
)
364 /* Provide default values for all "must have" methods. */
365 if (t
->to_xfer_partial
== NULL
)
366 t
->to_xfer_partial
= default_xfer_partial
;
368 if (t
->to_has_all_memory
== NULL
)
369 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
371 if (t
->to_has_memory
== NULL
)
372 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
374 if (t
->to_has_stack
== NULL
)
375 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
377 if (t
->to_has_registers
== NULL
)
378 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
380 if (t
->to_has_execution
== NULL
)
381 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
383 install_delegators (t
);
386 /* Add possible target architecture T to the list and add a new
387 command 'target T->to_shortname'. Set COMPLETER as the command's
388 completer if not NULL. */
391 add_target_with_completer (struct target_ops
*t
,
392 completer_ftype
*completer
)
394 struct cmd_list_element
*c
;
396 complete_target_initialization (t
);
400 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
401 target_structs
= (struct target_ops
**) xmalloc
402 (target_struct_allocsize
* sizeof (*target_structs
));
404 if (target_struct_size
>= target_struct_allocsize
)
406 target_struct_allocsize
*= 2;
407 target_structs
= (struct target_ops
**)
408 xrealloc ((char *) target_structs
,
409 target_struct_allocsize
* sizeof (*target_structs
));
411 target_structs
[target_struct_size
++] = t
;
413 if (targetlist
== NULL
)
414 add_prefix_cmd ("target", class_run
, target_command
, _("\
415 Connect to a target machine or process.\n\
416 The first argument is the type or protocol of the target machine.\n\
417 Remaining arguments are interpreted by the target protocol. For more\n\
418 information on the arguments for a particular protocol, type\n\
419 `help target ' followed by the protocol name."),
420 &targetlist
, "target ", 0, &cmdlist
);
421 c
= add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
,
423 if (completer
!= NULL
)
424 set_cmd_completer (c
, completer
);
427 /* Add a possible target architecture to the list. */
430 add_target (struct target_ops
*t
)
432 add_target_with_completer (t
, NULL
);
438 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
440 struct cmd_list_element
*c
;
443 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
445 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
446 alt
= xstrprintf ("target %s", t
->to_shortname
);
447 deprecate_cmd (c
, alt
);
461 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
463 current_target
.to_kill (¤t_target
);
467 target_load (char *arg
, int from_tty
)
469 target_dcache_invalidate ();
470 (*current_target
.to_load
) (¤t_target
, arg
, from_tty
);
474 target_create_inferior (char *exec_file
, char *args
,
475 char **env
, int from_tty
)
477 struct target_ops
*t
;
479 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
481 if (t
->to_create_inferior
!= NULL
)
483 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
485 fprintf_unfiltered (gdb_stdlog
,
486 "target_create_inferior (%s, %s, xxx, %d)\n",
487 exec_file
, args
, from_tty
);
492 internal_error (__FILE__
, __LINE__
,
493 _("could not find a target to create inferior"));
497 target_terminal_inferior (void)
499 /* A background resume (``run&'') should leave GDB in control of the
500 terminal. Use target_can_async_p, not target_is_async_p, since at
501 this point the target is not async yet. However, if sync_execution
502 is not set, we know it will become async prior to resume. */
503 if (target_can_async_p () && !sync_execution
)
506 /* If GDB is resuming the inferior in the foreground, install
507 inferior's terminal modes. */
508 (*current_target
.to_terminal_inferior
) (¤t_target
);
512 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
513 struct target_ops
*t
)
515 errno
= EIO
; /* Can't read/write this location. */
516 return 0; /* No bytes handled. */
522 error (_("You can't do that when your target is `%s'"),
523 current_target
.to_shortname
);
529 error (_("You can't do that without a process to debug."));
533 default_terminal_info (struct target_ops
*self
, const char *args
, int from_tty
)
535 printf_unfiltered (_("No saved terminal information.\n"));
538 /* A default implementation for the to_get_ada_task_ptid target method.
540 This function builds the PTID by using both LWP and TID as part of
541 the PTID lwp and tid elements. The pid used is the pid of the
545 default_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long tid
)
547 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
550 static enum exec_direction_kind
551 default_execution_direction (struct target_ops
*self
)
553 if (!target_can_execute_reverse
)
555 else if (!target_can_async_p ())
558 gdb_assert_not_reached ("\
559 to_execution_direction must be implemented for reverse async");
562 /* Go through the target stack from top to bottom, copying over zero
563 entries in current_target, then filling in still empty entries. In
564 effect, we are doing class inheritance through the pushed target
567 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
568 is currently implemented, is that it discards any knowledge of
569 which target an inherited method originally belonged to.
570 Consequently, new new target methods should instead explicitly and
571 locally search the target stack for the target that can handle the
575 update_current_target (void)
577 struct target_ops
*t
;
579 /* First, reset current's contents. */
580 memset (¤t_target
, 0, sizeof (current_target
));
582 /* Install the delegators. */
583 install_delegators (¤t_target
);
585 #define INHERIT(FIELD, TARGET) \
586 if (!current_target.FIELD) \
587 current_target.FIELD = (TARGET)->FIELD
589 for (t
= target_stack
; t
; t
= t
->beneath
)
591 INHERIT (to_shortname
, t
);
592 INHERIT (to_longname
, t
);
594 /* Do not inherit to_open. */
595 /* Do not inherit to_close. */
596 /* Do not inherit to_attach. */
597 /* Do not inherit to_post_attach. */
598 INHERIT (to_attach_no_wait
, t
);
599 /* Do not inherit to_detach. */
600 /* Do not inherit to_disconnect. */
601 /* Do not inherit to_resume. */
602 /* Do not inherit to_wait. */
603 /* Do not inherit to_fetch_registers. */
604 /* Do not inherit to_store_registers. */
605 /* Do not inherit to_prepare_to_store. */
606 INHERIT (deprecated_xfer_memory
, t
);
607 /* Do not inherit to_files_info. */
608 /* Do not inherit to_insert_breakpoint. */
609 /* Do not inherit to_remove_breakpoint. */
610 /* Do not inherit to_can_use_hw_breakpoint. */
611 /* Do not inherit to_insert_hw_breakpoint. */
612 /* Do not inherit to_remove_hw_breakpoint. */
613 /* Do not inherit to_ranged_break_num_registers. */
614 /* Do not inherit to_insert_watchpoint. */
615 /* Do not inherit to_remove_watchpoint. */
616 /* Do not inherit to_insert_mask_watchpoint. */
617 /* Do not inherit to_remove_mask_watchpoint. */
618 /* Do not inherit to_stopped_data_address. */
619 INHERIT (to_have_steppable_watchpoint
, t
);
620 INHERIT (to_have_continuable_watchpoint
, t
);
621 /* Do not inherit to_stopped_by_watchpoint. */
622 /* Do not inherit to_watchpoint_addr_within_range. */
623 /* Do not inherit to_region_ok_for_hw_watchpoint. */
624 /* Do not inherit to_can_accel_watchpoint_condition. */
625 /* Do not inherit to_masked_watch_num_registers. */
626 /* Do not inherit to_terminal_init. */
627 /* Do not inherit to_terminal_inferior. */
628 /* Do not inherit to_terminal_ours_for_output. */
629 /* Do not inherit to_terminal_ours. */
630 /* Do not inherit to_terminal_save_ours. */
631 /* Do not inherit to_terminal_info. */
632 /* Do not inherit to_kill. */
633 /* Do not inherit to_load. */
634 /* Do no inherit to_create_inferior. */
635 /* Do not inherit to_post_startup_inferior. */
636 /* Do not inherit to_insert_fork_catchpoint. */
637 /* Do not inherit to_remove_fork_catchpoint. */
638 /* Do not inherit to_insert_vfork_catchpoint. */
639 /* Do not inherit to_remove_vfork_catchpoint. */
640 /* Do not inherit to_follow_fork. */
641 /* Do not inherit to_insert_exec_catchpoint. */
642 /* Do not inherit to_remove_exec_catchpoint. */
643 /* Do not inherit to_set_syscall_catchpoint. */
644 /* Do not inherit to_has_exited. */
645 /* Do not inherit to_mourn_inferior. */
646 INHERIT (to_can_run
, t
);
647 /* Do not inherit to_pass_signals. */
648 /* Do not inherit to_program_signals. */
649 /* Do not inherit to_thread_alive. */
650 /* Do not inherit to_find_new_threads. */
651 /* Do not inherit to_pid_to_str. */
652 /* Do not inherit to_extra_thread_info. */
653 /* Do not inherit to_thread_name. */
654 /* Do not inherit to_stop. */
655 /* Do not inherit to_xfer_partial. */
656 /* Do not inherit to_rcmd. */
657 /* Do not inherit to_pid_to_exec_file. */
658 /* Do not inherit to_log_command. */
659 INHERIT (to_stratum
, t
);
660 /* Do not inherit to_has_all_memory. */
661 /* Do not inherit to_has_memory. */
662 /* Do not inherit to_has_stack. */
663 /* Do not inherit to_has_registers. */
664 /* Do not inherit to_has_execution. */
665 INHERIT (to_has_thread_control
, t
);
666 /* Do not inherit to_can_async_p. */
667 /* Do not inherit to_is_async_p. */
668 /* Do not inherit to_async. */
669 /* Do not inherit to_find_memory_regions. */
670 /* Do not inherit to_make_corefile_notes. */
671 /* Do not inherit to_get_bookmark. */
672 /* Do not inherit to_goto_bookmark. */
673 /* Do not inherit to_get_thread_local_address. */
674 /* Do not inherit to_can_execute_reverse. */
675 /* Do not inherit to_execution_direction. */
676 /* Do not inherit to_thread_architecture. */
677 /* Do not inherit to_read_description. */
678 /* Do not inherit to_get_ada_task_ptid. */
679 /* Do not inherit to_search_memory. */
680 /* Do not inherit to_supports_multi_process. */
681 /* Do not inherit to_supports_enable_disable_tracepoint. */
682 /* Do not inherit to_supports_string_tracing. */
683 /* Do not inherit to_trace_init. */
684 /* Do not inherit to_download_tracepoint. */
685 /* Do not inherit to_can_download_tracepoint. */
686 /* Do not inherit to_download_trace_state_variable. */
687 /* Do not inherit to_enable_tracepoint. */
688 /* Do not inherit to_disable_tracepoint. */
689 /* Do not inherit to_trace_set_readonly_regions. */
690 /* Do not inherit to_trace_start. */
691 /* Do not inherit to_get_trace_status. */
692 /* Do not inherit to_get_tracepoint_status. */
693 /* Do not inherit to_trace_stop. */
694 /* Do not inherit to_trace_find. */
695 /* Do not inherit to_get_trace_state_variable_value. */
696 /* Do not inherit to_save_trace_data. */
697 /* Do not inherit to_upload_tracepoints. */
698 /* Do not inherit to_upload_trace_state_variables. */
699 /* Do not inherit to_get_raw_trace_data. */
700 /* Do not inherit to_get_min_fast_tracepoint_insn_len. */
701 /* Do not inherit to_set_disconnected_tracing. */
702 /* Do not inherit to_set_circular_trace_buffer. */
703 /* Do not inherit to_set_trace_buffer_size. */
704 /* Do not inherit to_set_trace_notes. */
705 /* Do not inherit to_get_tib_address. */
706 /* Do not inherit to_set_permissions. */
707 /* Do not inherit to_static_tracepoint_marker_at. */
708 /* Do not inherit to_static_tracepoint_markers_by_strid. */
709 /* Do not inherit to_traceframe_info. */
710 /* Do not inherit to_use_agent. */
711 /* Do not inherit to_can_use_agent. */
712 /* Do not inherit to_augmented_libraries_svr4_read. */
713 INHERIT (to_magic
, t
);
715 to_supports_evaluation_of_breakpoint_conditions. */
716 /* Do not inherit to_can_run_breakpoint_commands. */
717 /* Do not inherit to_memory_map. */
718 /* Do not inherit to_flash_erase. */
719 /* Do not inherit to_flash_done. */
723 /* Clean up a target struct so it no longer has any zero pointers in
724 it. Some entries are defaulted to a method that print an error,
725 others are hard-wired to a standard recursive default. */
727 #define de_fault(field, value) \
728 if (!current_target.field) \
729 current_target.field = value
732 (void (*) (char *, int))
735 (void (*) (struct target_ops
*))
737 de_fault (deprecated_xfer_memory
,
738 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
739 struct mem_attrib
*, struct target_ops
*))
741 de_fault (to_can_run
,
742 (int (*) (struct target_ops
*))
744 current_target
.to_read_description
= NULL
;
748 /* Finally, position the target-stack beneath the squashed
749 "current_target". That way code looking for a non-inherited
750 target method can quickly and simply find it. */
751 current_target
.beneath
= target_stack
;
754 setup_target_debug ();
757 /* Push a new target type into the stack of the existing target accessors,
758 possibly superseding some of the existing accessors.
760 Rather than allow an empty stack, we always have the dummy target at
761 the bottom stratum, so we can call the function vectors without
765 push_target (struct target_ops
*t
)
767 struct target_ops
**cur
;
769 /* Check magic number. If wrong, it probably means someone changed
770 the struct definition, but not all the places that initialize one. */
771 if (t
->to_magic
!= OPS_MAGIC
)
773 fprintf_unfiltered (gdb_stderr
,
774 "Magic number of %s target struct wrong\n",
776 internal_error (__FILE__
, __LINE__
,
777 _("failed internal consistency check"));
780 /* Find the proper stratum to install this target in. */
781 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
783 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
787 /* If there's already targets at this stratum, remove them. */
788 /* FIXME: cagney/2003-10-15: I think this should be popping all
789 targets to CUR, and not just those at this stratum level. */
790 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
792 /* There's already something at this stratum level. Close it,
793 and un-hook it from the stack. */
794 struct target_ops
*tmp
= (*cur
);
796 (*cur
) = (*cur
)->beneath
;
801 /* We have removed all targets in our stratum, now add the new one. */
805 update_current_target ();
808 /* Remove a target_ops vector from the stack, wherever it may be.
809 Return how many times it was removed (0 or 1). */
812 unpush_target (struct target_ops
*t
)
814 struct target_ops
**cur
;
815 struct target_ops
*tmp
;
817 if (t
->to_stratum
== dummy_stratum
)
818 internal_error (__FILE__
, __LINE__
,
819 _("Attempt to unpush the dummy target"));
821 /* Look for the specified target. Note that we assume that a target
822 can only occur once in the target stack. */
824 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
830 /* If we don't find target_ops, quit. Only open targets should be
835 /* Unchain the target. */
837 (*cur
) = (*cur
)->beneath
;
840 update_current_target ();
842 /* Finally close the target. Note we do this after unchaining, so
843 any target method calls from within the target_close
844 implementation don't end up in T anymore. */
851 pop_all_targets_above (enum strata above_stratum
)
853 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
855 if (!unpush_target (target_stack
))
857 fprintf_unfiltered (gdb_stderr
,
858 "pop_all_targets couldn't find target %s\n",
859 target_stack
->to_shortname
);
860 internal_error (__FILE__
, __LINE__
,
861 _("failed internal consistency check"));
868 pop_all_targets (void)
870 pop_all_targets_above (dummy_stratum
);
873 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
876 target_is_pushed (struct target_ops
*t
)
878 struct target_ops
**cur
;
880 /* Check magic number. If wrong, it probably means someone changed
881 the struct definition, but not all the places that initialize one. */
882 if (t
->to_magic
!= OPS_MAGIC
)
884 fprintf_unfiltered (gdb_stderr
,
885 "Magic number of %s target struct wrong\n",
887 internal_error (__FILE__
, __LINE__
,
888 _("failed internal consistency check"));
891 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
898 /* Using the objfile specified in OBJFILE, find the address for the
899 current thread's thread-local storage with offset OFFSET. */
901 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
903 volatile CORE_ADDR addr
= 0;
904 struct target_ops
*target
;
906 for (target
= current_target
.beneath
;
908 target
= target
->beneath
)
910 if (target
->to_get_thread_local_address
!= NULL
)
915 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
917 ptid_t ptid
= inferior_ptid
;
918 volatile struct gdb_exception ex
;
920 TRY_CATCH (ex
, RETURN_MASK_ALL
)
924 /* Fetch the load module address for this objfile. */
925 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
927 /* If it's 0, throw the appropriate exception. */
929 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
930 _("TLS load module not found"));
932 addr
= target
->to_get_thread_local_address (target
, ptid
,
935 /* If an error occurred, print TLS related messages here. Otherwise,
936 throw the error to some higher catcher. */
939 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
943 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
944 error (_("Cannot find thread-local variables "
945 "in this thread library."));
947 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
948 if (objfile_is_library
)
949 error (_("Cannot find shared library `%s' in dynamic"
950 " linker's load module list"), objfile_name (objfile
));
952 error (_("Cannot find executable file `%s' in dynamic"
953 " linker's load module list"), objfile_name (objfile
));
955 case TLS_NOT_ALLOCATED_YET_ERROR
:
956 if (objfile_is_library
)
957 error (_("The inferior has not yet allocated storage for"
958 " thread-local variables in\n"
959 "the shared library `%s'\n"
961 objfile_name (objfile
), target_pid_to_str (ptid
));
963 error (_("The inferior has not yet allocated storage for"
964 " thread-local variables in\n"
965 "the executable `%s'\n"
967 objfile_name (objfile
), target_pid_to_str (ptid
));
969 case TLS_GENERIC_ERROR
:
970 if (objfile_is_library
)
971 error (_("Cannot find thread-local storage for %s, "
972 "shared library %s:\n%s"),
973 target_pid_to_str (ptid
),
974 objfile_name (objfile
), ex
.message
);
976 error (_("Cannot find thread-local storage for %s, "
977 "executable file %s:\n%s"),
978 target_pid_to_str (ptid
),
979 objfile_name (objfile
), ex
.message
);
982 throw_exception (ex
);
987 /* It wouldn't be wrong here to try a gdbarch method, too; finding
988 TLS is an ABI-specific thing. But we don't do that yet. */
990 error (_("Cannot find thread-local variables on this target"));
996 target_xfer_status_to_string (enum target_xfer_status err
)
998 #define CASE(X) case X: return #X
1001 CASE(TARGET_XFER_E_IO
);
1002 CASE(TARGET_XFER_E_UNAVAILABLE
);
1011 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1013 /* target_read_string -- read a null terminated string, up to LEN bytes,
1014 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1015 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1016 is responsible for freeing it. Return the number of bytes successfully
1020 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1022 int tlen
, offset
, i
;
1026 int buffer_allocated
;
1028 unsigned int nbytes_read
= 0;
1030 gdb_assert (string
);
1032 /* Small for testing. */
1033 buffer_allocated
= 4;
1034 buffer
= xmalloc (buffer_allocated
);
1039 tlen
= MIN (len
, 4 - (memaddr
& 3));
1040 offset
= memaddr
& 3;
1042 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1045 /* The transfer request might have crossed the boundary to an
1046 unallocated region of memory. Retry the transfer, requesting
1050 errcode
= target_read_memory (memaddr
, buf
, 1);
1055 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1059 bytes
= bufptr
- buffer
;
1060 buffer_allocated
*= 2;
1061 buffer
= xrealloc (buffer
, buffer_allocated
);
1062 bufptr
= buffer
+ bytes
;
1065 for (i
= 0; i
< tlen
; i
++)
1067 *bufptr
++ = buf
[i
+ offset
];
1068 if (buf
[i
+ offset
] == '\000')
1070 nbytes_read
+= i
+ 1;
1077 nbytes_read
+= tlen
;
1086 struct target_section_table
*
1087 target_get_section_table (struct target_ops
*target
)
1089 struct target_ops
*t
;
1092 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1094 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1095 if (t
->to_get_section_table
!= NULL
)
1096 return (*t
->to_get_section_table
) (t
);
1101 /* Find a section containing ADDR. */
1103 struct target_section
*
1104 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1106 struct target_section_table
*table
= target_get_section_table (target
);
1107 struct target_section
*secp
;
1112 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1114 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1120 /* Read memory from the live target, even if currently inspecting a
1121 traceframe. The return is the same as that of target_read. */
1123 static enum target_xfer_status
1124 target_read_live_memory (enum target_object object
,
1125 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1126 ULONGEST
*xfered_len
)
1128 enum target_xfer_status ret
;
1129 struct cleanup
*cleanup
;
1131 /* Switch momentarily out of tfind mode so to access live memory.
1132 Note that this must not clear global state, such as the frame
1133 cache, which must still remain valid for the previous traceframe.
1134 We may be _building_ the frame cache at this point. */
1135 cleanup
= make_cleanup_restore_traceframe_number ();
1136 set_traceframe_number (-1);
1138 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1139 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1141 do_cleanups (cleanup
);
1145 /* Using the set of read-only target sections of OPS, read live
1146 read-only memory. Note that the actual reads start from the
1147 top-most target again.
1149 For interface/parameters/return description see target.h,
1152 static enum target_xfer_status
1153 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1154 enum target_object object
,
1155 gdb_byte
*readbuf
, ULONGEST memaddr
,
1156 ULONGEST len
, ULONGEST
*xfered_len
)
1158 struct target_section
*secp
;
1159 struct target_section_table
*table
;
1161 secp
= target_section_by_addr (ops
, memaddr
);
1163 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1164 secp
->the_bfd_section
)
1167 struct target_section
*p
;
1168 ULONGEST memend
= memaddr
+ len
;
1170 table
= target_get_section_table (ops
);
1172 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1174 if (memaddr
>= p
->addr
)
1176 if (memend
<= p
->endaddr
)
1178 /* Entire transfer is within this section. */
1179 return target_read_live_memory (object
, memaddr
,
1180 readbuf
, len
, xfered_len
);
1182 else if (memaddr
>= p
->endaddr
)
1184 /* This section ends before the transfer starts. */
1189 /* This section overlaps the transfer. Just do half. */
1190 len
= p
->endaddr
- memaddr
;
1191 return target_read_live_memory (object
, memaddr
,
1192 readbuf
, len
, xfered_len
);
1198 return TARGET_XFER_EOF
;
1201 /* Read memory from more than one valid target. A core file, for
1202 instance, could have some of memory but delegate other bits to
1203 the target below it. So, we must manually try all targets. */
1205 static enum target_xfer_status
1206 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1207 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1208 ULONGEST
*xfered_len
)
1210 enum target_xfer_status res
;
1214 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1215 readbuf
, writebuf
, memaddr
, len
,
1217 if (res
== TARGET_XFER_OK
)
1220 /* Stop if the target reports that the memory is not available. */
1221 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1224 /* We want to continue past core files to executables, but not
1225 past a running target's memory. */
1226 if (ops
->to_has_all_memory (ops
))
1231 while (ops
!= NULL
);
1236 /* Perform a partial memory transfer.
1237 For docs see target.h, to_xfer_partial. */
1239 static enum target_xfer_status
1240 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1241 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1242 ULONGEST len
, ULONGEST
*xfered_len
)
1244 enum target_xfer_status res
;
1246 struct mem_region
*region
;
1247 struct inferior
*inf
;
1249 /* For accesses to unmapped overlay sections, read directly from
1250 files. Must do this first, as MEMADDR may need adjustment. */
1251 if (readbuf
!= NULL
&& overlay_debugging
)
1253 struct obj_section
*section
= find_pc_overlay (memaddr
);
1255 if (pc_in_unmapped_range (memaddr
, section
))
1257 struct target_section_table
*table
1258 = target_get_section_table (ops
);
1259 const char *section_name
= section
->the_bfd_section
->name
;
1261 memaddr
= overlay_mapped_address (memaddr
, section
);
1262 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1263 memaddr
, len
, xfered_len
,
1265 table
->sections_end
,
1270 /* Try the executable files, if "trust-readonly-sections" is set. */
1271 if (readbuf
!= NULL
&& trust_readonly
)
1273 struct target_section
*secp
;
1274 struct target_section_table
*table
;
1276 secp
= target_section_by_addr (ops
, memaddr
);
1278 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1279 secp
->the_bfd_section
)
1282 table
= target_get_section_table (ops
);
1283 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1284 memaddr
, len
, xfered_len
,
1286 table
->sections_end
,
1291 /* If reading unavailable memory in the context of traceframes, and
1292 this address falls within a read-only section, fallback to
1293 reading from live memory. */
1294 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1296 VEC(mem_range_s
) *available
;
1298 /* If we fail to get the set of available memory, then the
1299 target does not support querying traceframe info, and so we
1300 attempt reading from the traceframe anyway (assuming the
1301 target implements the old QTro packet then). */
1302 if (traceframe_available_memory (&available
, memaddr
, len
))
1304 struct cleanup
*old_chain
;
1306 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1308 if (VEC_empty (mem_range_s
, available
)
1309 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1311 /* Don't read into the traceframe's available
1313 if (!VEC_empty (mem_range_s
, available
))
1315 LONGEST oldlen
= len
;
1317 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1318 gdb_assert (len
<= oldlen
);
1321 do_cleanups (old_chain
);
1323 /* This goes through the topmost target again. */
1324 res
= memory_xfer_live_readonly_partial (ops
, object
,
1327 if (res
== TARGET_XFER_OK
)
1328 return TARGET_XFER_OK
;
1331 /* No use trying further, we know some memory starting
1332 at MEMADDR isn't available. */
1334 return TARGET_XFER_E_UNAVAILABLE
;
1338 /* Don't try to read more than how much is available, in
1339 case the target implements the deprecated QTro packet to
1340 cater for older GDBs (the target's knowledge of read-only
1341 sections may be outdated by now). */
1342 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1344 do_cleanups (old_chain
);
1348 /* Try GDB's internal data cache. */
1349 region
= lookup_mem_region (memaddr
);
1350 /* region->hi == 0 means there's no upper bound. */
1351 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1354 reg_len
= region
->hi
- memaddr
;
1356 switch (region
->attrib
.mode
)
1359 if (writebuf
!= NULL
)
1360 return TARGET_XFER_E_IO
;
1364 if (readbuf
!= NULL
)
1365 return TARGET_XFER_E_IO
;
1369 /* We only support writing to flash during "load" for now. */
1370 if (writebuf
!= NULL
)
1371 error (_("Writing to flash memory forbidden in this context"));
1375 return TARGET_XFER_E_IO
;
1378 if (!ptid_equal (inferior_ptid
, null_ptid
))
1379 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1384 /* The dcache reads whole cache lines; that doesn't play well
1385 with reading from a trace buffer, because reading outside of
1386 the collected memory range fails. */
1387 && get_traceframe_number () == -1
1388 && (region
->attrib
.cache
1389 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1390 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1392 DCACHE
*dcache
= target_dcache_get_or_init ();
1395 if (readbuf
!= NULL
)
1396 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1398 /* FIXME drow/2006-08-09: If we're going to preserve const
1399 correctness dcache_xfer_memory should take readbuf and
1401 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1404 return TARGET_XFER_E_IO
;
1407 *xfered_len
= (ULONGEST
) l
;
1408 return TARGET_XFER_OK
;
1412 /* If none of those methods found the memory we wanted, fall back
1413 to a target partial transfer. Normally a single call to
1414 to_xfer_partial is enough; if it doesn't recognize an object
1415 it will call the to_xfer_partial of the next target down.
1416 But for memory this won't do. Memory is the only target
1417 object which can be read from more than one valid target.
1418 A core file, for instance, could have some of memory but
1419 delegate other bits to the target below it. So, we must
1420 manually try all targets. */
1422 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1425 /* Make sure the cache gets updated no matter what - if we are writing
1426 to the stack. Even if this write is not tagged as such, we still need
1427 to update the cache. */
1429 if (res
== TARGET_XFER_OK
1432 && target_dcache_init_p ()
1433 && !region
->attrib
.cache
1434 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1435 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1437 DCACHE
*dcache
= target_dcache_get ();
1439 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1442 /* If we still haven't got anything, return the last error. We
1447 /* Perform a partial memory transfer. For docs see target.h,
1450 static enum target_xfer_status
1451 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1452 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1453 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1455 enum target_xfer_status res
;
1457 /* Zero length requests are ok and require no work. */
1459 return TARGET_XFER_EOF
;
1461 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1462 breakpoint insns, thus hiding out from higher layers whether
1463 there are software breakpoints inserted in the code stream. */
1464 if (readbuf
!= NULL
)
1466 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1469 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1470 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1475 struct cleanup
*old_chain
;
1477 /* A large write request is likely to be partially satisfied
1478 by memory_xfer_partial_1. We will continually malloc
1479 and free a copy of the entire write request for breakpoint
1480 shadow handling even though we only end up writing a small
1481 subset of it. Cap writes to 4KB to mitigate this. */
1482 len
= min (4096, len
);
1484 buf
= xmalloc (len
);
1485 old_chain
= make_cleanup (xfree
, buf
);
1486 memcpy (buf
, writebuf
, len
);
1488 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1489 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1492 do_cleanups (old_chain
);
1499 restore_show_memory_breakpoints (void *arg
)
1501 show_memory_breakpoints
= (uintptr_t) arg
;
1505 make_show_memory_breakpoints_cleanup (int show
)
1507 int current
= show_memory_breakpoints
;
1509 show_memory_breakpoints
= show
;
1510 return make_cleanup (restore_show_memory_breakpoints
,
1511 (void *) (uintptr_t) current
);
1514 /* For docs see target.h, to_xfer_partial. */
1516 enum target_xfer_status
1517 target_xfer_partial (struct target_ops
*ops
,
1518 enum target_object object
, const char *annex
,
1519 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1520 ULONGEST offset
, ULONGEST len
,
1521 ULONGEST
*xfered_len
)
1523 enum target_xfer_status retval
;
1525 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1527 /* Transfer is done when LEN is zero. */
1529 return TARGET_XFER_EOF
;
1531 if (writebuf
&& !may_write_memory
)
1532 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1533 core_addr_to_string_nz (offset
), plongest (len
));
1537 /* If this is a memory transfer, let the memory-specific code
1538 have a look at it instead. Memory transfers are more
1540 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1541 || object
== TARGET_OBJECT_CODE_MEMORY
)
1542 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1543 writebuf
, offset
, len
, xfered_len
);
1544 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1546 /* Request the normal memory object from other layers. */
1547 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1551 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1552 writebuf
, offset
, len
, xfered_len
);
1556 const unsigned char *myaddr
= NULL
;
1558 fprintf_unfiltered (gdb_stdlog
,
1559 "%s:target_xfer_partial "
1560 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1563 (annex
? annex
: "(null)"),
1564 host_address_to_string (readbuf
),
1565 host_address_to_string (writebuf
),
1566 core_addr_to_string_nz (offset
),
1567 pulongest (len
), retval
,
1568 pulongest (*xfered_len
));
1574 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1578 fputs_unfiltered (", bytes =", gdb_stdlog
);
1579 for (i
= 0; i
< *xfered_len
; i
++)
1581 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1583 if (targetdebug
< 2 && i
> 0)
1585 fprintf_unfiltered (gdb_stdlog
, " ...");
1588 fprintf_unfiltered (gdb_stdlog
, "\n");
1591 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1595 fputc_unfiltered ('\n', gdb_stdlog
);
1598 /* Check implementations of to_xfer_partial update *XFERED_LEN
1599 properly. Do assertion after printing debug messages, so that we
1600 can find more clues on assertion failure from debugging messages. */
1601 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1602 gdb_assert (*xfered_len
> 0);
1607 /* Read LEN bytes of target memory at address MEMADDR, placing the
1608 results in GDB's memory at MYADDR. Returns either 0 for success or
1609 TARGET_XFER_E_IO if any error occurs.
1611 If an error occurs, no guarantee is made about the contents of the data at
1612 MYADDR. In particular, the caller should not depend upon partial reads
1613 filling the buffer with good data. There is no way for the caller to know
1614 how much good data might have been transfered anyway. Callers that can
1615 deal with partial reads should call target_read (which will retry until
1616 it makes no progress, and then return how much was transferred). */
1619 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1621 /* Dispatch to the topmost target, not the flattened current_target.
1622 Memory accesses check target->to_has_(all_)memory, and the
1623 flattened target doesn't inherit those. */
1624 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1625 myaddr
, memaddr
, len
) == len
)
1628 return TARGET_XFER_E_IO
;
1631 /* Like target_read_memory, but specify explicitly that this is a read
1632 from the target's raw memory. That is, this read bypasses the
1633 dcache, breakpoint shadowing, etc. */
1636 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1638 /* See comment in target_read_memory about why the request starts at
1639 current_target.beneath. */
1640 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1641 myaddr
, memaddr
, len
) == len
)
1644 return TARGET_XFER_E_IO
;
1647 /* Like target_read_memory, but specify explicitly that this is a read from
1648 the target's stack. This may trigger different cache behavior. */
1651 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1653 /* See comment in target_read_memory about why the request starts at
1654 current_target.beneath. */
1655 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1656 myaddr
, memaddr
, len
) == len
)
1659 return TARGET_XFER_E_IO
;
1662 /* Like target_read_memory, but specify explicitly that this is a read from
1663 the target's code. This may trigger different cache behavior. */
1666 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1668 /* See comment in target_read_memory about why the request starts at
1669 current_target.beneath. */
1670 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1671 myaddr
, memaddr
, len
) == len
)
1674 return TARGET_XFER_E_IO
;
1677 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1678 Returns either 0 for success or TARGET_XFER_E_IO if any
1679 error occurs. If an error occurs, no guarantee is made about how
1680 much data got written. Callers that can deal with partial writes
1681 should call target_write. */
1684 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1686 /* See comment in target_read_memory about why the request starts at
1687 current_target.beneath. */
1688 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1689 myaddr
, memaddr
, len
) == len
)
1692 return TARGET_XFER_E_IO
;
1695 /* Write LEN bytes from MYADDR to target raw memory at address
1696 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1697 if any error occurs. If an error occurs, no guarantee is made
1698 about how much data got written. Callers that can deal with
1699 partial writes should call target_write. */
1702 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1704 /* See comment in target_read_memory about why the request starts at
1705 current_target.beneath. */
1706 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1707 myaddr
, memaddr
, len
) == len
)
1710 return TARGET_XFER_E_IO
;
1713 /* Fetch the target's memory map. */
1716 target_memory_map (void)
1718 VEC(mem_region_s
) *result
;
1719 struct mem_region
*last_one
, *this_one
;
1721 struct target_ops
*t
;
1724 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1726 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1727 if (t
->to_memory_map
!= NULL
)
1733 result
= t
->to_memory_map (t
);
1737 qsort (VEC_address (mem_region_s
, result
),
1738 VEC_length (mem_region_s
, result
),
1739 sizeof (struct mem_region
), mem_region_cmp
);
1741 /* Check that regions do not overlap. Simultaneously assign
1742 a numbering for the "mem" commands to use to refer to
1745 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1747 this_one
->number
= ix
;
1749 if (last_one
&& last_one
->hi
> this_one
->lo
)
1751 warning (_("Overlapping regions in memory map: ignoring"));
1752 VEC_free (mem_region_s
, result
);
1755 last_one
= this_one
;
1762 target_flash_erase (ULONGEST address
, LONGEST length
)
1764 struct target_ops
*t
;
1766 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1767 if (t
->to_flash_erase
!= NULL
)
1770 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1771 hex_string (address
), phex (length
, 0));
1772 t
->to_flash_erase (t
, address
, length
);
1780 target_flash_done (void)
1782 struct target_ops
*t
;
1784 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1785 if (t
->to_flash_done
!= NULL
)
1788 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1789 t
->to_flash_done (t
);
1797 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1798 struct cmd_list_element
*c
, const char *value
)
1800 fprintf_filtered (file
,
1801 _("Mode for reading from readonly sections is %s.\n"),
1805 /* More generic transfers. */
1807 static enum target_xfer_status
1808 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1809 const char *annex
, gdb_byte
*readbuf
,
1810 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1811 ULONGEST
*xfered_len
)
1813 if (object
== TARGET_OBJECT_MEMORY
1814 && ops
->deprecated_xfer_memory
!= NULL
)
1815 /* If available, fall back to the target's
1816 "deprecated_xfer_memory" method. */
1821 if (writebuf
!= NULL
)
1823 void *buffer
= xmalloc (len
);
1824 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1826 memcpy (buffer
, writebuf
, len
);
1827 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1828 1/*write*/, NULL
, ops
);
1829 do_cleanups (cleanup
);
1831 if (readbuf
!= NULL
)
1832 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1833 0/*read*/, NULL
, ops
);
1836 *xfered_len
= (ULONGEST
) xfered
;
1837 return TARGET_XFER_E_IO
;
1839 else if (xfered
== 0 && errno
== 0)
1840 /* "deprecated_xfer_memory" uses 0, cross checked against
1841 ERRNO as one indication of an error. */
1842 return TARGET_XFER_EOF
;
1844 return TARGET_XFER_E_IO
;
1848 gdb_assert (ops
->beneath
!= NULL
);
1849 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1850 readbuf
, writebuf
, offset
, len
,
1855 /* Target vector read/write partial wrapper functions. */
1857 static enum target_xfer_status
1858 target_read_partial (struct target_ops
*ops
,
1859 enum target_object object
,
1860 const char *annex
, gdb_byte
*buf
,
1861 ULONGEST offset
, ULONGEST len
,
1862 ULONGEST
*xfered_len
)
1864 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
1868 static enum target_xfer_status
1869 target_write_partial (struct target_ops
*ops
,
1870 enum target_object object
,
1871 const char *annex
, const gdb_byte
*buf
,
1872 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
1874 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
1878 /* Wrappers to perform the full transfer. */
1880 /* For docs on target_read see target.h. */
1883 target_read (struct target_ops
*ops
,
1884 enum target_object object
,
1885 const char *annex
, gdb_byte
*buf
,
1886 ULONGEST offset
, LONGEST len
)
1890 while (xfered
< len
)
1892 ULONGEST xfered_len
;
1893 enum target_xfer_status status
;
1895 status
= target_read_partial (ops
, object
, annex
,
1896 (gdb_byte
*) buf
+ xfered
,
1897 offset
+ xfered
, len
- xfered
,
1900 /* Call an observer, notifying them of the xfer progress? */
1901 if (status
== TARGET_XFER_EOF
)
1903 else if (status
== TARGET_XFER_OK
)
1905 xfered
+= xfered_len
;
1915 /* Assuming that the entire [begin, end) range of memory cannot be
1916 read, try to read whatever subrange is possible to read.
1918 The function returns, in RESULT, either zero or one memory block.
1919 If there's a readable subrange at the beginning, it is completely
1920 read and returned. Any further readable subrange will not be read.
1921 Otherwise, if there's a readable subrange at the end, it will be
1922 completely read and returned. Any readable subranges before it
1923 (obviously, not starting at the beginning), will be ignored. In
1924 other cases -- either no readable subrange, or readable subrange(s)
1925 that is neither at the beginning, or end, nothing is returned.
1927 The purpose of this function is to handle a read across a boundary
1928 of accessible memory in a case when memory map is not available.
1929 The above restrictions are fine for this case, but will give
1930 incorrect results if the memory is 'patchy'. However, supporting
1931 'patchy' memory would require trying to read every single byte,
1932 and it seems unacceptable solution. Explicit memory map is
1933 recommended for this case -- and target_read_memory_robust will
1934 take care of reading multiple ranges then. */
1937 read_whatever_is_readable (struct target_ops
*ops
,
1938 ULONGEST begin
, ULONGEST end
,
1939 VEC(memory_read_result_s
) **result
)
1941 gdb_byte
*buf
= xmalloc (end
- begin
);
1942 ULONGEST current_begin
= begin
;
1943 ULONGEST current_end
= end
;
1945 memory_read_result_s r
;
1946 ULONGEST xfered_len
;
1948 /* If we previously failed to read 1 byte, nothing can be done here. */
1949 if (end
- begin
<= 1)
1955 /* Check that either first or the last byte is readable, and give up
1956 if not. This heuristic is meant to permit reading accessible memory
1957 at the boundary of accessible region. */
1958 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1959 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
1964 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1965 buf
+ (end
-begin
) - 1, end
- 1, 1,
1966 &xfered_len
) == TARGET_XFER_OK
)
1977 /* Loop invariant is that the [current_begin, current_end) was previously
1978 found to be not readable as a whole.
1980 Note loop condition -- if the range has 1 byte, we can't divide the range
1981 so there's no point trying further. */
1982 while (current_end
- current_begin
> 1)
1984 ULONGEST first_half_begin
, first_half_end
;
1985 ULONGEST second_half_begin
, second_half_end
;
1987 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
1991 first_half_begin
= current_begin
;
1992 first_half_end
= middle
;
1993 second_half_begin
= middle
;
1994 second_half_end
= current_end
;
1998 first_half_begin
= middle
;
1999 first_half_end
= current_end
;
2000 second_half_begin
= current_begin
;
2001 second_half_end
= middle
;
2004 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2005 buf
+ (first_half_begin
- begin
),
2007 first_half_end
- first_half_begin
);
2009 if (xfer
== first_half_end
- first_half_begin
)
2011 /* This half reads up fine. So, the error must be in the
2013 current_begin
= second_half_begin
;
2014 current_end
= second_half_end
;
2018 /* This half is not readable. Because we've tried one byte, we
2019 know some part of this half if actually redable. Go to the next
2020 iteration to divide again and try to read.
2022 We don't handle the other half, because this function only tries
2023 to read a single readable subrange. */
2024 current_begin
= first_half_begin
;
2025 current_end
= first_half_end
;
2031 /* The [begin, current_begin) range has been read. */
2033 r
.end
= current_begin
;
2038 /* The [current_end, end) range has been read. */
2039 LONGEST rlen
= end
- current_end
;
2041 r
.data
= xmalloc (rlen
);
2042 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2043 r
.begin
= current_end
;
2047 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2051 free_memory_read_result_vector (void *x
)
2053 VEC(memory_read_result_s
) *v
= x
;
2054 memory_read_result_s
*current
;
2057 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2059 xfree (current
->data
);
2061 VEC_free (memory_read_result_s
, v
);
2064 VEC(memory_read_result_s
) *
2065 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2067 VEC(memory_read_result_s
) *result
= 0;
2070 while (xfered
< len
)
2072 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2075 /* If there is no explicit region, a fake one should be created. */
2076 gdb_assert (region
);
2078 if (region
->hi
== 0)
2079 rlen
= len
- xfered
;
2081 rlen
= region
->hi
- offset
;
2083 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2085 /* Cannot read this region. Note that we can end up here only
2086 if the region is explicitly marked inaccessible, or
2087 'inaccessible-by-default' is in effect. */
2092 LONGEST to_read
= min (len
- xfered
, rlen
);
2093 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2095 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2096 (gdb_byte
*) buffer
,
2097 offset
+ xfered
, to_read
);
2098 /* Call an observer, notifying them of the xfer progress? */
2101 /* Got an error reading full chunk. See if maybe we can read
2104 read_whatever_is_readable (ops
, offset
+ xfered
,
2105 offset
+ xfered
+ to_read
, &result
);
2110 struct memory_read_result r
;
2112 r
.begin
= offset
+ xfered
;
2113 r
.end
= r
.begin
+ xfer
;
2114 VEC_safe_push (memory_read_result_s
, result
, &r
);
2124 /* An alternative to target_write with progress callbacks. */
2127 target_write_with_progress (struct target_ops
*ops
,
2128 enum target_object object
,
2129 const char *annex
, const gdb_byte
*buf
,
2130 ULONGEST offset
, LONGEST len
,
2131 void (*progress
) (ULONGEST
, void *), void *baton
)
2135 /* Give the progress callback a chance to set up. */
2137 (*progress
) (0, baton
);
2139 while (xfered
< len
)
2141 ULONGEST xfered_len
;
2142 enum target_xfer_status status
;
2144 status
= target_write_partial (ops
, object
, annex
,
2145 (gdb_byte
*) buf
+ xfered
,
2146 offset
+ xfered
, len
- xfered
,
2149 if (status
== TARGET_XFER_EOF
)
2151 if (TARGET_XFER_STATUS_ERROR_P (status
))
2154 gdb_assert (status
== TARGET_XFER_OK
);
2156 (*progress
) (xfered_len
, baton
);
2158 xfered
+= xfered_len
;
2164 /* For docs on target_write see target.h. */
2167 target_write (struct target_ops
*ops
,
2168 enum target_object object
,
2169 const char *annex
, const gdb_byte
*buf
,
2170 ULONGEST offset
, LONGEST len
)
2172 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2176 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2177 the size of the transferred data. PADDING additional bytes are
2178 available in *BUF_P. This is a helper function for
2179 target_read_alloc; see the declaration of that function for more
2183 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2184 const char *annex
, gdb_byte
**buf_p
, int padding
)
2186 size_t buf_alloc
, buf_pos
;
2189 /* This function does not have a length parameter; it reads the
2190 entire OBJECT). Also, it doesn't support objects fetched partly
2191 from one target and partly from another (in a different stratum,
2192 e.g. a core file and an executable). Both reasons make it
2193 unsuitable for reading memory. */
2194 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2196 /* Start by reading up to 4K at a time. The target will throttle
2197 this number down if necessary. */
2199 buf
= xmalloc (buf_alloc
);
2203 ULONGEST xfered_len
;
2204 enum target_xfer_status status
;
2206 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2207 buf_pos
, buf_alloc
- buf_pos
- padding
,
2210 if (status
== TARGET_XFER_EOF
)
2212 /* Read all there was. */
2219 else if (status
!= TARGET_XFER_OK
)
2221 /* An error occurred. */
2223 return TARGET_XFER_E_IO
;
2226 buf_pos
+= xfered_len
;
2228 /* If the buffer is filling up, expand it. */
2229 if (buf_alloc
< buf_pos
* 2)
2232 buf
= xrealloc (buf
, buf_alloc
);
2239 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2240 the size of the transferred data. See the declaration in "target.h"
2241 function for more information about the return value. */
2244 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2245 const char *annex
, gdb_byte
**buf_p
)
2247 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2250 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2251 returned as a string, allocated using xmalloc. If an error occurs
2252 or the transfer is unsupported, NULL is returned. Empty objects
2253 are returned as allocated but empty strings. A warning is issued
2254 if the result contains any embedded NUL bytes. */
2257 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2262 LONGEST i
, transferred
;
2264 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2265 bufstr
= (char *) buffer
;
2267 if (transferred
< 0)
2270 if (transferred
== 0)
2271 return xstrdup ("");
2273 bufstr
[transferred
] = 0;
2275 /* Check for embedded NUL bytes; but allow trailing NULs. */
2276 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2279 warning (_("target object %d, annex %s, "
2280 "contained unexpected null characters"),
2281 (int) object
, annex
? annex
: "(none)");
2288 /* Memory transfer methods. */
2291 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2294 /* This method is used to read from an alternate, non-current
2295 target. This read must bypass the overlay support (as symbols
2296 don't match this target), and GDB's internal cache (wrong cache
2297 for this target). */
2298 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2300 memory_error (TARGET_XFER_E_IO
, addr
);
2304 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2305 int len
, enum bfd_endian byte_order
)
2307 gdb_byte buf
[sizeof (ULONGEST
)];
2309 gdb_assert (len
<= sizeof (buf
));
2310 get_target_memory (ops
, addr
, buf
, len
);
2311 return extract_unsigned_integer (buf
, len
, byte_order
);
2317 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2318 struct bp_target_info
*bp_tgt
)
2320 if (!may_insert_breakpoints
)
2322 warning (_("May not insert breakpoints"));
2326 return current_target
.to_insert_breakpoint (¤t_target
,
2333 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2334 struct bp_target_info
*bp_tgt
)
2336 /* This is kind of a weird case to handle, but the permission might
2337 have been changed after breakpoints were inserted - in which case
2338 we should just take the user literally and assume that any
2339 breakpoints should be left in place. */
2340 if (!may_insert_breakpoints
)
2342 warning (_("May not remove breakpoints"));
2346 return current_target
.to_remove_breakpoint (¤t_target
,
2351 target_info (char *args
, int from_tty
)
2353 struct target_ops
*t
;
2354 int has_all_mem
= 0;
2356 if (symfile_objfile
!= NULL
)
2357 printf_unfiltered (_("Symbols from \"%s\".\n"),
2358 objfile_name (symfile_objfile
));
2360 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2362 if (!(*t
->to_has_memory
) (t
))
2365 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2368 printf_unfiltered (_("\tWhile running this, "
2369 "GDB does not access memory from...\n"));
2370 printf_unfiltered ("%s:\n", t
->to_longname
);
2371 (t
->to_files_info
) (t
);
2372 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2376 /* This function is called before any new inferior is created, e.g.
2377 by running a program, attaching, or connecting to a target.
2378 It cleans up any state from previous invocations which might
2379 change between runs. This is a subset of what target_preopen
2380 resets (things which might change between targets). */
2383 target_pre_inferior (int from_tty
)
2385 /* Clear out solib state. Otherwise the solib state of the previous
2386 inferior might have survived and is entirely wrong for the new
2387 target. This has been observed on GNU/Linux using glibc 2.3. How
2399 Cannot access memory at address 0xdeadbeef
2402 /* In some OSs, the shared library list is the same/global/shared
2403 across inferiors. If code is shared between processes, so are
2404 memory regions and features. */
2405 if (!gdbarch_has_global_solist (target_gdbarch ()))
2407 no_shared_libraries (NULL
, from_tty
);
2409 invalidate_target_mem_regions ();
2411 target_clear_description ();
2414 agent_capability_invalidate ();
2417 /* Callback for iterate_over_inferiors. Gets rid of the given
2421 dispose_inferior (struct inferior
*inf
, void *args
)
2423 struct thread_info
*thread
;
2425 thread
= any_thread_of_process (inf
->pid
);
2428 switch_to_thread (thread
->ptid
);
2430 /* Core inferiors actually should be detached, not killed. */
2431 if (target_has_execution
)
2434 target_detach (NULL
, 0);
2440 /* This is to be called by the open routine before it does
2444 target_preopen (int from_tty
)
2448 if (have_inferiors ())
2451 || !have_live_inferiors ()
2452 || query (_("A program is being debugged already. Kill it? ")))
2453 iterate_over_inferiors (dispose_inferior
, NULL
);
2455 error (_("Program not killed."));
2458 /* Calling target_kill may remove the target from the stack. But if
2459 it doesn't (which seems like a win for UDI), remove it now. */
2460 /* Leave the exec target, though. The user may be switching from a
2461 live process to a core of the same program. */
2462 pop_all_targets_above (file_stratum
);
2464 target_pre_inferior (from_tty
);
2467 /* Detach a target after doing deferred register stores. */
2470 target_detach (const char *args
, int from_tty
)
2472 struct target_ops
* t
;
2474 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2475 /* Don't remove global breakpoints here. They're removed on
2476 disconnection from the target. */
2479 /* If we're in breakpoints-always-inserted mode, have to remove
2480 them before detaching. */
2481 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2483 prepare_for_detach ();
2485 current_target
.to_detach (¤t_target
, args
, from_tty
);
2487 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2492 target_disconnect (char *args
, int from_tty
)
2494 struct target_ops
*t
;
2496 /* If we're in breakpoints-always-inserted mode or if breakpoints
2497 are global across processes, we have to remove them before
2499 remove_breakpoints ();
2501 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2502 if (t
->to_disconnect
!= NULL
)
2505 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2507 t
->to_disconnect (t
, args
, from_tty
);
2515 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2517 struct target_ops
*t
;
2518 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2523 char *status_string
;
2524 char *options_string
;
2526 status_string
= target_waitstatus_to_string (status
);
2527 options_string
= target_options_to_string (options
);
2528 fprintf_unfiltered (gdb_stdlog
,
2529 "target_wait (%d, status, options={%s})"
2531 ptid_get_pid (ptid
), options_string
,
2532 ptid_get_pid (retval
), status_string
);
2533 xfree (status_string
);
2534 xfree (options_string
);
2541 target_pid_to_str (ptid_t ptid
)
2543 struct target_ops
*t
;
2545 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2547 if (t
->to_pid_to_str
!= NULL
)
2548 return (*t
->to_pid_to_str
) (t
, ptid
);
2551 return normal_pid_to_str (ptid
);
2555 target_thread_name (struct thread_info
*info
)
2557 return current_target
.to_thread_name (¤t_target
, info
);
2561 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2563 struct target_ops
*t
;
2565 target_dcache_invalidate ();
2567 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2569 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2570 ptid_get_pid (ptid
),
2571 step
? "step" : "continue",
2572 gdb_signal_to_name (signal
));
2574 registers_changed_ptid (ptid
);
2575 set_executing (ptid
, 1);
2576 set_running (ptid
, 1);
2577 clear_inline_frame_state (ptid
);
2581 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2587 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2590 for (i
= 0; i
< numsigs
; i
++)
2591 if (pass_signals
[i
])
2592 fprintf_unfiltered (gdb_stdlog
, " %s",
2593 gdb_signal_to_name (i
));
2595 fprintf_unfiltered (gdb_stdlog
, " })\n");
2598 (*current_target
.to_pass_signals
) (¤t_target
, numsigs
, pass_signals
);
2602 target_program_signals (int numsigs
, unsigned char *program_signals
)
2608 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2611 for (i
= 0; i
< numsigs
; i
++)
2612 if (program_signals
[i
])
2613 fprintf_unfiltered (gdb_stdlog
, " %s",
2614 gdb_signal_to_name (i
));
2616 fprintf_unfiltered (gdb_stdlog
, " })\n");
2619 (*current_target
.to_program_signals
) (¤t_target
,
2620 numsigs
, program_signals
);
2624 default_follow_fork (struct target_ops
*self
, int follow_child
,
2627 /* Some target returned a fork event, but did not know how to follow it. */
2628 internal_error (__FILE__
, __LINE__
,
2629 _("could not find a target to follow fork"));
2632 /* Look through the list of possible targets for a target that can
2636 target_follow_fork (int follow_child
, int detach_fork
)
2638 int retval
= current_target
.to_follow_fork (¤t_target
,
2639 follow_child
, detach_fork
);
2642 fprintf_unfiltered (gdb_stdlog
,
2643 "target_follow_fork (%d, %d) = %d\n",
2644 follow_child
, detach_fork
, retval
);
2649 default_mourn_inferior (struct target_ops
*self
)
2651 internal_error (__FILE__
, __LINE__
,
2652 _("could not find a target to follow mourn inferior"));
2656 target_mourn_inferior (void)
2658 current_target
.to_mourn_inferior (¤t_target
);
2660 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2662 /* We no longer need to keep handles on any of the object files.
2663 Make sure to release them to avoid unnecessarily locking any
2664 of them while we're not actually debugging. */
2665 bfd_cache_close_all ();
2668 /* Look for a target which can describe architectural features, starting
2669 from TARGET. If we find one, return its description. */
2671 const struct target_desc
*
2672 target_read_description (struct target_ops
*target
)
2674 struct target_ops
*t
;
2676 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2677 if (t
->to_read_description
!= NULL
)
2679 const struct target_desc
*tdesc
;
2681 tdesc
= t
->to_read_description (t
);
2689 /* The default implementation of to_search_memory.
2690 This implements a basic search of memory, reading target memory and
2691 performing the search here (as opposed to performing the search in on the
2692 target side with, for example, gdbserver). */
2695 simple_search_memory (struct target_ops
*ops
,
2696 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2697 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2698 CORE_ADDR
*found_addrp
)
2700 /* NOTE: also defined in find.c testcase. */
2701 #define SEARCH_CHUNK_SIZE 16000
2702 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2703 /* Buffer to hold memory contents for searching. */
2704 gdb_byte
*search_buf
;
2705 unsigned search_buf_size
;
2706 struct cleanup
*old_cleanups
;
2708 search_buf_size
= chunk_size
+ pattern_len
- 1;
2710 /* No point in trying to allocate a buffer larger than the search space. */
2711 if (search_space_len
< search_buf_size
)
2712 search_buf_size
= search_space_len
;
2714 search_buf
= malloc (search_buf_size
);
2715 if (search_buf
== NULL
)
2716 error (_("Unable to allocate memory to perform the search."));
2717 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2719 /* Prime the search buffer. */
2721 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2722 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2724 warning (_("Unable to access %s bytes of target "
2725 "memory at %s, halting search."),
2726 pulongest (search_buf_size
), hex_string (start_addr
));
2727 do_cleanups (old_cleanups
);
2731 /* Perform the search.
2733 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2734 When we've scanned N bytes we copy the trailing bytes to the start and
2735 read in another N bytes. */
2737 while (search_space_len
>= pattern_len
)
2739 gdb_byte
*found_ptr
;
2740 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2742 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2743 pattern
, pattern_len
);
2745 if (found_ptr
!= NULL
)
2747 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2749 *found_addrp
= found_addr
;
2750 do_cleanups (old_cleanups
);
2754 /* Not found in this chunk, skip to next chunk. */
2756 /* Don't let search_space_len wrap here, it's unsigned. */
2757 if (search_space_len
>= chunk_size
)
2758 search_space_len
-= chunk_size
;
2760 search_space_len
= 0;
2762 if (search_space_len
>= pattern_len
)
2764 unsigned keep_len
= search_buf_size
- chunk_size
;
2765 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2768 /* Copy the trailing part of the previous iteration to the front
2769 of the buffer for the next iteration. */
2770 gdb_assert (keep_len
== pattern_len
- 1);
2771 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2773 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2775 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2776 search_buf
+ keep_len
, read_addr
,
2777 nr_to_read
) != nr_to_read
)
2779 warning (_("Unable to access %s bytes of target "
2780 "memory at %s, halting search."),
2781 plongest (nr_to_read
),
2782 hex_string (read_addr
));
2783 do_cleanups (old_cleanups
);
2787 start_addr
+= chunk_size
;
2793 do_cleanups (old_cleanups
);
2797 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2798 sequence of bytes in PATTERN with length PATTERN_LEN.
2800 The result is 1 if found, 0 if not found, and -1 if there was an error
2801 requiring halting of the search (e.g. memory read error).
2802 If the pattern is found the address is recorded in FOUND_ADDRP. */
2805 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2806 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2807 CORE_ADDR
*found_addrp
)
2809 struct target_ops
*t
;
2812 /* We don't use INHERIT to set current_target.to_search_memory,
2813 so we have to scan the target stack and handle targetdebug
2817 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2818 hex_string (start_addr
));
2820 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2821 if (t
->to_search_memory
!= NULL
)
2826 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2827 pattern
, pattern_len
, found_addrp
);
2831 /* If a special version of to_search_memory isn't available, use the
2833 found
= simple_search_memory (current_target
.beneath
,
2834 start_addr
, search_space_len
,
2835 pattern
, pattern_len
, found_addrp
);
2839 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2844 /* Look through the currently pushed targets. If none of them will
2845 be able to restart the currently running process, issue an error
2849 target_require_runnable (void)
2851 struct target_ops
*t
;
2853 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2855 /* If this target knows how to create a new program, then
2856 assume we will still be able to after killing the current
2857 one. Either killing and mourning will not pop T, or else
2858 find_default_run_target will find it again. */
2859 if (t
->to_create_inferior
!= NULL
)
2862 /* Do not worry about thread_stratum targets that can not
2863 create inferiors. Assume they will be pushed again if
2864 necessary, and continue to the process_stratum. */
2865 if (t
->to_stratum
== thread_stratum
2866 || t
->to_stratum
== arch_stratum
)
2869 error (_("The \"%s\" target does not support \"run\". "
2870 "Try \"help target\" or \"continue\"."),
2874 /* This function is only called if the target is running. In that
2875 case there should have been a process_stratum target and it
2876 should either know how to create inferiors, or not... */
2877 internal_error (__FILE__
, __LINE__
, _("No targets found"));
2880 /* Look through the list of possible targets for a target that can
2881 execute a run or attach command without any other data. This is
2882 used to locate the default process stratum.
2884 If DO_MESG is not NULL, the result is always valid (error() is
2885 called for errors); else, return NULL on error. */
2887 static struct target_ops
*
2888 find_default_run_target (char *do_mesg
)
2890 struct target_ops
**t
;
2891 struct target_ops
*runable
= NULL
;
2896 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2899 if ((*t
)->to_can_run
&& target_can_run (*t
))
2909 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
2918 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
2920 struct target_ops
*t
;
2922 t
= find_default_run_target ("attach");
2923 (t
->to_attach
) (t
, args
, from_tty
);
2928 find_default_create_inferior (struct target_ops
*ops
,
2929 char *exec_file
, char *allargs
, char **env
,
2932 struct target_ops
*t
;
2934 t
= find_default_run_target ("run");
2935 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
2940 find_default_can_async_p (struct target_ops
*ignore
)
2942 struct target_ops
*t
;
2944 /* This may be called before the target is pushed on the stack;
2945 look for the default process stratum. If there's none, gdb isn't
2946 configured with a native debugger, and target remote isn't
2948 t
= find_default_run_target (NULL
);
2949 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
2950 return (t
->to_can_async_p
) (t
);
2955 find_default_is_async_p (struct target_ops
*ignore
)
2957 struct target_ops
*t
;
2959 /* This may be called before the target is pushed on the stack;
2960 look for the default process stratum. If there's none, gdb isn't
2961 configured with a native debugger, and target remote isn't
2963 t
= find_default_run_target (NULL
);
2964 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
2965 return (t
->to_is_async_p
) (t
);
2970 find_default_supports_non_stop (struct target_ops
*self
)
2972 struct target_ops
*t
;
2974 t
= find_default_run_target (NULL
);
2975 if (t
&& t
->to_supports_non_stop
)
2976 return (t
->to_supports_non_stop
) (t
);
2981 target_supports_non_stop (void)
2983 struct target_ops
*t
;
2985 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
2986 if (t
->to_supports_non_stop
)
2987 return t
->to_supports_non_stop (t
);
2992 /* Implement the "info proc" command. */
2995 target_info_proc (char *args
, enum info_proc_what what
)
2997 struct target_ops
*t
;
2999 /* If we're already connected to something that can get us OS
3000 related data, use it. Otherwise, try using the native
3002 if (current_target
.to_stratum
>= process_stratum
)
3003 t
= current_target
.beneath
;
3005 t
= find_default_run_target (NULL
);
3007 for (; t
!= NULL
; t
= t
->beneath
)
3009 if (t
->to_info_proc
!= NULL
)
3011 t
->to_info_proc (t
, args
, what
);
3014 fprintf_unfiltered (gdb_stdlog
,
3015 "target_info_proc (\"%s\", %d)\n", args
, what
);
3025 find_default_supports_disable_randomization (struct target_ops
*self
)
3027 struct target_ops
*t
;
3029 t
= find_default_run_target (NULL
);
3030 if (t
&& t
->to_supports_disable_randomization
)
3031 return (t
->to_supports_disable_randomization
) (t
);
3036 target_supports_disable_randomization (void)
3038 struct target_ops
*t
;
3040 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3041 if (t
->to_supports_disable_randomization
)
3042 return t
->to_supports_disable_randomization (t
);
3048 target_get_osdata (const char *type
)
3050 struct target_ops
*t
;
3052 /* If we're already connected to something that can get us OS
3053 related data, use it. Otherwise, try using the native
3055 if (current_target
.to_stratum
>= process_stratum
)
3056 t
= current_target
.beneath
;
3058 t
= find_default_run_target ("get OS data");
3063 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3066 /* Determine the current address space of thread PTID. */
3068 struct address_space
*
3069 target_thread_address_space (ptid_t ptid
)
3071 struct address_space
*aspace
;
3072 struct inferior
*inf
;
3073 struct target_ops
*t
;
3075 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3077 if (t
->to_thread_address_space
!= NULL
)
3079 aspace
= t
->to_thread_address_space (t
, ptid
);
3080 gdb_assert (aspace
);
3083 fprintf_unfiltered (gdb_stdlog
,
3084 "target_thread_address_space (%s) = %d\n",
3085 target_pid_to_str (ptid
),
3086 address_space_num (aspace
));
3091 /* Fall-back to the "main" address space of the inferior. */
3092 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3094 if (inf
== NULL
|| inf
->aspace
== NULL
)
3095 internal_error (__FILE__
, __LINE__
,
3096 _("Can't determine the current "
3097 "address space of thread %s\n"),
3098 target_pid_to_str (ptid
));
3104 /* Target file operations. */
3106 static struct target_ops
*
3107 default_fileio_target (void)
3109 /* If we're already connected to something that can perform
3110 file I/O, use it. Otherwise, try using the native target. */
3111 if (current_target
.to_stratum
>= process_stratum
)
3112 return current_target
.beneath
;
3114 return find_default_run_target ("file I/O");
3117 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3118 target file descriptor, or -1 if an error occurs (and set
3121 target_fileio_open (const char *filename
, int flags
, int mode
,
3124 struct target_ops
*t
;
3126 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3128 if (t
->to_fileio_open
!= NULL
)
3130 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3133 fprintf_unfiltered (gdb_stdlog
,
3134 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3135 filename
, flags
, mode
,
3136 fd
, fd
!= -1 ? 0 : *target_errno
);
3141 *target_errno
= FILEIO_ENOSYS
;
3145 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3146 Return the number of bytes written, or -1 if an error occurs
3147 (and set *TARGET_ERRNO). */
3149 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3150 ULONGEST offset
, int *target_errno
)
3152 struct target_ops
*t
;
3154 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3156 if (t
->to_fileio_pwrite
!= NULL
)
3158 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3162 fprintf_unfiltered (gdb_stdlog
,
3163 "target_fileio_pwrite (%d,...,%d,%s) "
3165 fd
, len
, pulongest (offset
),
3166 ret
, ret
!= -1 ? 0 : *target_errno
);
3171 *target_errno
= FILEIO_ENOSYS
;
3175 /* Read up to LEN bytes FD on the target into READ_BUF.
3176 Return the number of bytes read, or -1 if an error occurs
3177 (and set *TARGET_ERRNO). */
3179 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3180 ULONGEST offset
, int *target_errno
)
3182 struct target_ops
*t
;
3184 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3186 if (t
->to_fileio_pread
!= NULL
)
3188 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3192 fprintf_unfiltered (gdb_stdlog
,
3193 "target_fileio_pread (%d,...,%d,%s) "
3195 fd
, len
, pulongest (offset
),
3196 ret
, ret
!= -1 ? 0 : *target_errno
);
3201 *target_errno
= FILEIO_ENOSYS
;
3205 /* Close FD on the target. Return 0, or -1 if an error occurs
3206 (and set *TARGET_ERRNO). */
3208 target_fileio_close (int fd
, int *target_errno
)
3210 struct target_ops
*t
;
3212 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3214 if (t
->to_fileio_close
!= NULL
)
3216 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3219 fprintf_unfiltered (gdb_stdlog
,
3220 "target_fileio_close (%d) = %d (%d)\n",
3221 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3226 *target_errno
= FILEIO_ENOSYS
;
3230 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3231 occurs (and set *TARGET_ERRNO). */
3233 target_fileio_unlink (const char *filename
, int *target_errno
)
3235 struct target_ops
*t
;
3237 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3239 if (t
->to_fileio_unlink
!= NULL
)
3241 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3244 fprintf_unfiltered (gdb_stdlog
,
3245 "target_fileio_unlink (%s) = %d (%d)\n",
3246 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3251 *target_errno
= FILEIO_ENOSYS
;
3255 /* Read value of symbolic link FILENAME on the target. Return a
3256 null-terminated string allocated via xmalloc, or NULL if an error
3257 occurs (and set *TARGET_ERRNO). */
3259 target_fileio_readlink (const char *filename
, int *target_errno
)
3261 struct target_ops
*t
;
3263 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3265 if (t
->to_fileio_readlink
!= NULL
)
3267 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3270 fprintf_unfiltered (gdb_stdlog
,
3271 "target_fileio_readlink (%s) = %s (%d)\n",
3272 filename
, ret
? ret
: "(nil)",
3273 ret
? 0 : *target_errno
);
3278 *target_errno
= FILEIO_ENOSYS
;
3283 target_fileio_close_cleanup (void *opaque
)
3285 int fd
= *(int *) opaque
;
3288 target_fileio_close (fd
, &target_errno
);
3291 /* Read target file FILENAME. Store the result in *BUF_P and
3292 return the size of the transferred data. PADDING additional bytes are
3293 available in *BUF_P. This is a helper function for
3294 target_fileio_read_alloc; see the declaration of that function for more
3298 target_fileio_read_alloc_1 (const char *filename
,
3299 gdb_byte
**buf_p
, int padding
)
3301 struct cleanup
*close_cleanup
;
3302 size_t buf_alloc
, buf_pos
;
3308 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3312 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3314 /* Start by reading up to 4K at a time. The target will throttle
3315 this number down if necessary. */
3317 buf
= xmalloc (buf_alloc
);
3321 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3322 buf_alloc
- buf_pos
- padding
, buf_pos
,
3326 /* An error occurred. */
3327 do_cleanups (close_cleanup
);
3333 /* Read all there was. */
3334 do_cleanups (close_cleanup
);
3344 /* If the buffer is filling up, expand it. */
3345 if (buf_alloc
< buf_pos
* 2)
3348 buf
= xrealloc (buf
, buf_alloc
);
3355 /* Read target file FILENAME. Store the result in *BUF_P and return
3356 the size of the transferred data. See the declaration in "target.h"
3357 function for more information about the return value. */
3360 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3362 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3365 /* Read target file FILENAME. The result is NUL-terminated and
3366 returned as a string, allocated using xmalloc. If an error occurs
3367 or the transfer is unsupported, NULL is returned. Empty objects
3368 are returned as allocated but empty strings. A warning is issued
3369 if the result contains any embedded NUL bytes. */
3372 target_fileio_read_stralloc (const char *filename
)
3376 LONGEST i
, transferred
;
3378 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3379 bufstr
= (char *) buffer
;
3381 if (transferred
< 0)
3384 if (transferred
== 0)
3385 return xstrdup ("");
3387 bufstr
[transferred
] = 0;
3389 /* Check for embedded NUL bytes; but allow trailing NULs. */
3390 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3393 warning (_("target file %s "
3394 "contained unexpected null characters"),
3404 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3405 CORE_ADDR addr
, int len
)
3407 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3411 default_watchpoint_addr_within_range (struct target_ops
*target
,
3413 CORE_ADDR start
, int length
)
3415 return addr
>= start
&& addr
< start
+ length
;
3418 static struct gdbarch
*
3419 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3421 return target_gdbarch ();
3431 * Find the next target down the stack from the specified target.
3435 find_target_beneath (struct target_ops
*t
)
3443 find_target_at (enum strata stratum
)
3445 struct target_ops
*t
;
3447 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3448 if (t
->to_stratum
== stratum
)
3455 /* The inferior process has died. Long live the inferior! */
3458 generic_mourn_inferior (void)
3462 ptid
= inferior_ptid
;
3463 inferior_ptid
= null_ptid
;
3465 /* Mark breakpoints uninserted in case something tries to delete a
3466 breakpoint while we delete the inferior's threads (which would
3467 fail, since the inferior is long gone). */
3468 mark_breakpoints_out ();
3470 if (!ptid_equal (ptid
, null_ptid
))
3472 int pid
= ptid_get_pid (ptid
);
3473 exit_inferior (pid
);
3476 /* Note this wipes step-resume breakpoints, so needs to be done
3477 after exit_inferior, which ends up referencing the step-resume
3478 breakpoints through clear_thread_inferior_resources. */
3479 breakpoint_init_inferior (inf_exited
);
3481 registers_changed ();
3483 reopen_exec_file ();
3484 reinit_frame_cache ();
3486 if (deprecated_detach_hook
)
3487 deprecated_detach_hook ();
3490 /* Convert a normal process ID to a string. Returns the string in a
3494 normal_pid_to_str (ptid_t ptid
)
3496 static char buf
[32];
3498 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3503 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3505 return normal_pid_to_str (ptid
);
3508 /* Error-catcher for target_find_memory_regions. */
3510 dummy_find_memory_regions (struct target_ops
*self
,
3511 find_memory_region_ftype ignore1
, void *ignore2
)
3513 error (_("Command not implemented for this target."));
3517 /* Error-catcher for target_make_corefile_notes. */
3519 dummy_make_corefile_notes (struct target_ops
*self
,
3520 bfd
*ignore1
, int *ignore2
)
3522 error (_("Command not implemented for this target."));
3526 /* Set up the handful of non-empty slots needed by the dummy target
3530 init_dummy_target (void)
3532 dummy_target
.to_shortname
= "None";
3533 dummy_target
.to_longname
= "None";
3534 dummy_target
.to_doc
= "";
3535 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3536 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3537 dummy_target
.to_supports_disable_randomization
3538 = find_default_supports_disable_randomization
;
3539 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3540 dummy_target
.to_stratum
= dummy_stratum
;
3541 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3542 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3543 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3544 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3545 dummy_target
.to_has_execution
3546 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3547 dummy_target
.to_magic
= OPS_MAGIC
;
3549 install_dummy_methods (&dummy_target
);
3553 debug_to_open (char *args
, int from_tty
)
3555 debug_target
.to_open (args
, from_tty
);
3557 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3561 target_close (struct target_ops
*targ
)
3563 gdb_assert (!target_is_pushed (targ
));
3565 if (targ
->to_xclose
!= NULL
)
3566 targ
->to_xclose (targ
);
3567 else if (targ
->to_close
!= NULL
)
3568 targ
->to_close (targ
);
3571 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3575 target_attach (char *args
, int from_tty
)
3577 current_target
.to_attach (¤t_target
, args
, from_tty
);
3579 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3584 target_thread_alive (ptid_t ptid
)
3586 struct target_ops
*t
;
3588 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3590 if (t
->to_thread_alive
!= NULL
)
3594 retval
= t
->to_thread_alive (t
, ptid
);
3596 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3597 ptid_get_pid (ptid
), retval
);
3607 target_find_new_threads (void)
3609 struct target_ops
*t
;
3611 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3613 if (t
->to_find_new_threads
!= NULL
)
3615 t
->to_find_new_threads (t
);
3617 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3625 target_stop (ptid_t ptid
)
3629 warning (_("May not interrupt or stop the target, ignoring attempt"));
3633 (*current_target
.to_stop
) (¤t_target
, ptid
);
3637 debug_to_post_attach (struct target_ops
*self
, int pid
)
3639 debug_target
.to_post_attach (&debug_target
, pid
);
3641 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3644 /* Concatenate ELEM to LIST, a comma separate list, and return the
3645 result. The LIST incoming argument is released. */
3648 str_comma_list_concat_elem (char *list
, const char *elem
)
3651 return xstrdup (elem
);
3653 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3656 /* Helper for target_options_to_string. If OPT is present in
3657 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3658 Returns the new resulting string. OPT is removed from
3662 do_option (int *target_options
, char *ret
,
3663 int opt
, char *opt_str
)
3665 if ((*target_options
& opt
) != 0)
3667 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3668 *target_options
&= ~opt
;
3675 target_options_to_string (int target_options
)
3679 #define DO_TARG_OPTION(OPT) \
3680 ret = do_option (&target_options, ret, OPT, #OPT)
3682 DO_TARG_OPTION (TARGET_WNOHANG
);
3684 if (target_options
!= 0)
3685 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3693 debug_print_register (const char * func
,
3694 struct regcache
*regcache
, int regno
)
3696 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3698 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3699 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3700 && gdbarch_register_name (gdbarch
, regno
) != NULL
3701 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3702 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3703 gdbarch_register_name (gdbarch
, regno
));
3705 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3706 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3708 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3709 int i
, size
= register_size (gdbarch
, regno
);
3710 gdb_byte buf
[MAX_REGISTER_SIZE
];
3712 regcache_raw_collect (regcache
, regno
, buf
);
3713 fprintf_unfiltered (gdb_stdlog
, " = ");
3714 for (i
= 0; i
< size
; i
++)
3716 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3718 if (size
<= sizeof (LONGEST
))
3720 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3722 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3723 core_addr_to_string_nz (val
), plongest (val
));
3726 fprintf_unfiltered (gdb_stdlog
, "\n");
3730 target_fetch_registers (struct regcache
*regcache
, int regno
)
3732 current_target
.to_fetch_registers (¤t_target
, regcache
, regno
);
3734 debug_print_register ("target_fetch_registers", regcache
, regno
);
3738 target_store_registers (struct regcache
*regcache
, int regno
)
3740 struct target_ops
*t
;
3742 if (!may_write_registers
)
3743 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3745 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3748 debug_print_register ("target_store_registers", regcache
, regno
);
3753 target_core_of_thread (ptid_t ptid
)
3755 struct target_ops
*t
;
3757 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3759 if (t
->to_core_of_thread
!= NULL
)
3761 int retval
= t
->to_core_of_thread (t
, ptid
);
3764 fprintf_unfiltered (gdb_stdlog
,
3765 "target_core_of_thread (%d) = %d\n",
3766 ptid_get_pid (ptid
), retval
);
3775 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3777 struct target_ops
*t
;
3779 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3781 if (t
->to_verify_memory
!= NULL
)
3783 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3786 fprintf_unfiltered (gdb_stdlog
,
3787 "target_verify_memory (%s, %s) = %d\n",
3788 paddress (target_gdbarch (), memaddr
),
3798 /* The documentation for this function is in its prototype declaration in
3802 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3806 ret
= current_target
.to_insert_mask_watchpoint (¤t_target
,
3810 fprintf_unfiltered (gdb_stdlog
, "\
3811 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3812 core_addr_to_string (addr
),
3813 core_addr_to_string (mask
), rw
, ret
);
3818 /* The documentation for this function is in its prototype declaration in
3822 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3826 ret
= current_target
.to_remove_mask_watchpoint (¤t_target
,
3830 fprintf_unfiltered (gdb_stdlog
, "\
3831 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3832 core_addr_to_string (addr
),
3833 core_addr_to_string (mask
), rw
, ret
);
3838 /* The documentation for this function is in its prototype declaration
3842 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
3844 return current_target
.to_masked_watch_num_registers (¤t_target
,
3848 /* The documentation for this function is in its prototype declaration
3852 target_ranged_break_num_registers (void)
3854 return current_target
.to_ranged_break_num_registers (¤t_target
);
3859 struct btrace_target_info
*
3860 target_enable_btrace (ptid_t ptid
)
3862 struct target_ops
*t
;
3864 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3865 if (t
->to_enable_btrace
!= NULL
)
3866 return t
->to_enable_btrace (t
, ptid
);
3875 target_disable_btrace (struct btrace_target_info
*btinfo
)
3877 struct target_ops
*t
;
3879 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3880 if (t
->to_disable_btrace
!= NULL
)
3882 t
->to_disable_btrace (t
, btinfo
);
3892 target_teardown_btrace (struct btrace_target_info
*btinfo
)
3894 struct target_ops
*t
;
3896 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3897 if (t
->to_teardown_btrace
!= NULL
)
3899 t
->to_teardown_btrace (t
, btinfo
);
3909 target_read_btrace (VEC (btrace_block_s
) **btrace
,
3910 struct btrace_target_info
*btinfo
,
3911 enum btrace_read_type type
)
3913 struct target_ops
*t
;
3915 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3916 if (t
->to_read_btrace
!= NULL
)
3917 return t
->to_read_btrace (t
, btrace
, btinfo
, type
);
3920 return BTRACE_ERR_NOT_SUPPORTED
;
3926 target_stop_recording (void)
3928 struct target_ops
*t
;
3930 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3931 if (t
->to_stop_recording
!= NULL
)
3933 t
->to_stop_recording (t
);
3937 /* This is optional. */
3943 target_info_record (void)
3945 struct target_ops
*t
;
3947 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3948 if (t
->to_info_record
!= NULL
)
3950 t
->to_info_record (t
);
3960 target_save_record (const char *filename
)
3962 struct target_ops
*t
;
3964 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3965 if (t
->to_save_record
!= NULL
)
3967 t
->to_save_record (t
, filename
);
3977 target_supports_delete_record (void)
3979 struct target_ops
*t
;
3981 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3982 if (t
->to_delete_record
!= NULL
)
3991 target_delete_record (void)
3993 struct target_ops
*t
;
3995 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3996 if (t
->to_delete_record
!= NULL
)
3998 t
->to_delete_record (t
);
4008 target_record_is_replaying (void)
4010 struct target_ops
*t
;
4012 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4013 if (t
->to_record_is_replaying
!= NULL
)
4014 return t
->to_record_is_replaying (t
);
4022 target_goto_record_begin (void)
4024 struct target_ops
*t
;
4026 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4027 if (t
->to_goto_record_begin
!= NULL
)
4029 t
->to_goto_record_begin (t
);
4039 target_goto_record_end (void)
4041 struct target_ops
*t
;
4043 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4044 if (t
->to_goto_record_end
!= NULL
)
4046 t
->to_goto_record_end (t
);
4056 target_goto_record (ULONGEST insn
)
4058 struct target_ops
*t
;
4060 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4061 if (t
->to_goto_record
!= NULL
)
4063 t
->to_goto_record (t
, insn
);
4073 target_insn_history (int size
, int flags
)
4075 struct target_ops
*t
;
4077 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4078 if (t
->to_insn_history
!= NULL
)
4080 t
->to_insn_history (t
, size
, flags
);
4090 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4092 struct target_ops
*t
;
4094 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4095 if (t
->to_insn_history_from
!= NULL
)
4097 t
->to_insn_history_from (t
, from
, size
, flags
);
4107 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4109 struct target_ops
*t
;
4111 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4112 if (t
->to_insn_history_range
!= NULL
)
4114 t
->to_insn_history_range (t
, begin
, end
, flags
);
4124 target_call_history (int size
, int flags
)
4126 struct target_ops
*t
;
4128 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4129 if (t
->to_call_history
!= NULL
)
4131 t
->to_call_history (t
, size
, flags
);
4141 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4143 struct target_ops
*t
;
4145 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4146 if (t
->to_call_history_from
!= NULL
)
4148 t
->to_call_history_from (t
, begin
, size
, flags
);
4158 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4160 struct target_ops
*t
;
4162 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4163 if (t
->to_call_history_range
!= NULL
)
4165 t
->to_call_history_range (t
, begin
, end
, flags
);
4173 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
4175 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
4177 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4182 const struct frame_unwind
*
4183 target_get_unwinder (void)
4185 struct target_ops
*t
;
4187 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4188 if (t
->to_get_unwinder
!= NULL
)
4189 return t
->to_get_unwinder
;
4196 const struct frame_unwind
*
4197 target_get_tailcall_unwinder (void)
4199 struct target_ops
*t
;
4201 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4202 if (t
->to_get_tailcall_unwinder
!= NULL
)
4203 return t
->to_get_tailcall_unwinder
;
4211 forward_target_decr_pc_after_break (struct target_ops
*ops
,
4212 struct gdbarch
*gdbarch
)
4214 for (; ops
!= NULL
; ops
= ops
->beneath
)
4215 if (ops
->to_decr_pc_after_break
!= NULL
)
4216 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
4218 return gdbarch_decr_pc_after_break (gdbarch
);
4224 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
4226 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
4230 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4231 int write
, struct mem_attrib
*attrib
,
4232 struct target_ops
*target
)
4236 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4239 fprintf_unfiltered (gdb_stdlog
,
4240 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4241 paddress (target_gdbarch (), memaddr
), len
,
4242 write
? "write" : "read", retval
);
4248 fputs_unfiltered (", bytes =", gdb_stdlog
);
4249 for (i
= 0; i
< retval
; i
++)
4251 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4253 if (targetdebug
< 2 && i
> 0)
4255 fprintf_unfiltered (gdb_stdlog
, " ...");
4258 fprintf_unfiltered (gdb_stdlog
, "\n");
4261 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4265 fputc_unfiltered ('\n', gdb_stdlog
);
4271 debug_to_files_info (struct target_ops
*target
)
4273 debug_target
.to_files_info (target
);
4275 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4279 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4280 struct bp_target_info
*bp_tgt
)
4284 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4286 fprintf_unfiltered (gdb_stdlog
,
4287 "target_insert_breakpoint (%s, xxx) = %ld\n",
4288 core_addr_to_string (bp_tgt
->placed_address
),
4289 (unsigned long) retval
);
4294 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4295 struct bp_target_info
*bp_tgt
)
4299 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4301 fprintf_unfiltered (gdb_stdlog
,
4302 "target_remove_breakpoint (%s, xxx) = %ld\n",
4303 core_addr_to_string (bp_tgt
->placed_address
),
4304 (unsigned long) retval
);
4309 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4310 int type
, int cnt
, int from_tty
)
4314 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4315 type
, cnt
, from_tty
);
4317 fprintf_unfiltered (gdb_stdlog
,
4318 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4319 (unsigned long) type
,
4320 (unsigned long) cnt
,
4321 (unsigned long) from_tty
,
4322 (unsigned long) retval
);
4327 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4328 CORE_ADDR addr
, int len
)
4332 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4335 fprintf_unfiltered (gdb_stdlog
,
4336 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4337 core_addr_to_string (addr
), (unsigned long) len
,
4338 core_addr_to_string (retval
));
4343 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4344 CORE_ADDR addr
, int len
, int rw
,
4345 struct expression
*cond
)
4349 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4353 fprintf_unfiltered (gdb_stdlog
,
4354 "target_can_accel_watchpoint_condition "
4355 "(%s, %d, %d, %s) = %ld\n",
4356 core_addr_to_string (addr
), len
, rw
,
4357 host_address_to_string (cond
), (unsigned long) retval
);
4362 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4366 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4368 fprintf_unfiltered (gdb_stdlog
,
4369 "target_stopped_by_watchpoint () = %ld\n",
4370 (unsigned long) retval
);
4375 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4379 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4381 fprintf_unfiltered (gdb_stdlog
,
4382 "target_stopped_data_address ([%s]) = %ld\n",
4383 core_addr_to_string (*addr
),
4384 (unsigned long)retval
);
4389 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4391 CORE_ADDR start
, int length
)
4395 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4398 fprintf_filtered (gdb_stdlog
,
4399 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4400 core_addr_to_string (addr
), core_addr_to_string (start
),
4406 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4407 struct gdbarch
*gdbarch
,
4408 struct bp_target_info
*bp_tgt
)
4412 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4415 fprintf_unfiltered (gdb_stdlog
,
4416 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4417 core_addr_to_string (bp_tgt
->placed_address
),
4418 (unsigned long) retval
);
4423 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4424 struct gdbarch
*gdbarch
,
4425 struct bp_target_info
*bp_tgt
)
4429 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4432 fprintf_unfiltered (gdb_stdlog
,
4433 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4434 core_addr_to_string (bp_tgt
->placed_address
),
4435 (unsigned long) retval
);
4440 debug_to_insert_watchpoint (struct target_ops
*self
,
4441 CORE_ADDR addr
, int len
, int type
,
4442 struct expression
*cond
)
4446 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4447 addr
, len
, type
, cond
);
4449 fprintf_unfiltered (gdb_stdlog
,
4450 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4451 core_addr_to_string (addr
), len
, type
,
4452 host_address_to_string (cond
), (unsigned long) retval
);
4457 debug_to_remove_watchpoint (struct target_ops
*self
,
4458 CORE_ADDR addr
, int len
, int type
,
4459 struct expression
*cond
)
4463 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4464 addr
, len
, type
, cond
);
4466 fprintf_unfiltered (gdb_stdlog
,
4467 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4468 core_addr_to_string (addr
), len
, type
,
4469 host_address_to_string (cond
), (unsigned long) retval
);
4474 debug_to_terminal_init (struct target_ops
*self
)
4476 debug_target
.to_terminal_init (&debug_target
);
4478 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4482 debug_to_terminal_inferior (struct target_ops
*self
)
4484 debug_target
.to_terminal_inferior (&debug_target
);
4486 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4490 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4492 debug_target
.to_terminal_ours_for_output (&debug_target
);
4494 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4498 debug_to_terminal_ours (struct target_ops
*self
)
4500 debug_target
.to_terminal_ours (&debug_target
);
4502 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4506 debug_to_terminal_save_ours (struct target_ops
*self
)
4508 debug_target
.to_terminal_save_ours (&debug_target
);
4510 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4514 debug_to_terminal_info (struct target_ops
*self
,
4515 const char *arg
, int from_tty
)
4517 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4519 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4524 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4526 debug_target
.to_load (&debug_target
, args
, from_tty
);
4528 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4532 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4534 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4536 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4537 ptid_get_pid (ptid
));
4541 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4545 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4547 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4554 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4558 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4560 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4567 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4571 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4573 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4580 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4584 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4586 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4593 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4597 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4599 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4606 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4610 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4612 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4619 debug_to_has_exited (struct target_ops
*self
,
4620 int pid
, int wait_status
, int *exit_status
)
4624 has_exited
= debug_target
.to_has_exited (&debug_target
,
4625 pid
, wait_status
, exit_status
);
4627 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4628 pid
, wait_status
, *exit_status
, has_exited
);
4634 debug_to_can_run (struct target_ops
*self
)
4638 retval
= debug_target
.to_can_run (&debug_target
);
4640 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4645 static struct gdbarch
*
4646 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4648 struct gdbarch
*retval
;
4650 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4652 fprintf_unfiltered (gdb_stdlog
,
4653 "target_thread_architecture (%s) = %s [%s]\n",
4654 target_pid_to_str (ptid
),
4655 host_address_to_string (retval
),
4656 gdbarch_bfd_arch_info (retval
)->printable_name
);
4661 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4663 debug_target
.to_stop (&debug_target
, ptid
);
4665 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4666 target_pid_to_str (ptid
));
4670 debug_to_rcmd (struct target_ops
*self
, char *command
,
4671 struct ui_file
*outbuf
)
4673 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4674 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4678 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4682 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4684 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4691 setup_target_debug (void)
4693 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4695 current_target
.to_open
= debug_to_open
;
4696 current_target
.to_post_attach
= debug_to_post_attach
;
4697 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4698 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4699 current_target
.to_files_info
= debug_to_files_info
;
4700 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4701 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4702 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4703 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4704 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4705 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4706 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4707 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4708 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4709 current_target
.to_watchpoint_addr_within_range
4710 = debug_to_watchpoint_addr_within_range
;
4711 current_target
.to_region_ok_for_hw_watchpoint
4712 = debug_to_region_ok_for_hw_watchpoint
;
4713 current_target
.to_can_accel_watchpoint_condition
4714 = debug_to_can_accel_watchpoint_condition
;
4715 current_target
.to_terminal_init
= debug_to_terminal_init
;
4716 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4717 current_target
.to_terminal_ours_for_output
4718 = debug_to_terminal_ours_for_output
;
4719 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4720 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4721 current_target
.to_terminal_info
= debug_to_terminal_info
;
4722 current_target
.to_load
= debug_to_load
;
4723 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4724 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4725 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4726 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4727 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4728 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4729 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4730 current_target
.to_has_exited
= debug_to_has_exited
;
4731 current_target
.to_can_run
= debug_to_can_run
;
4732 current_target
.to_stop
= debug_to_stop
;
4733 current_target
.to_rcmd
= debug_to_rcmd
;
4734 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4735 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4739 static char targ_desc
[] =
4740 "Names of targets and files being debugged.\nShows the entire \
4741 stack of targets currently in use (including the exec-file,\n\
4742 core-file, and process, if any), as well as the symbol file name.";
4745 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4747 error (_("\"monitor\" command not supported by this target."));
4751 do_monitor_command (char *cmd
,
4754 target_rcmd (cmd
, gdb_stdtarg
);
4757 /* Print the name of each layers of our target stack. */
4760 maintenance_print_target_stack (char *cmd
, int from_tty
)
4762 struct target_ops
*t
;
4764 printf_filtered (_("The current target stack is:\n"));
4766 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4768 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4772 /* Controls if async mode is permitted. */
4773 int target_async_permitted
= 0;
4775 /* The set command writes to this variable. If the inferior is
4776 executing, target_async_permitted is *not* updated. */
4777 static int target_async_permitted_1
= 0;
4780 set_target_async_command (char *args
, int from_tty
,
4781 struct cmd_list_element
*c
)
4783 if (have_live_inferiors ())
4785 target_async_permitted_1
= target_async_permitted
;
4786 error (_("Cannot change this setting while the inferior is running."));
4789 target_async_permitted
= target_async_permitted_1
;
4793 show_target_async_command (struct ui_file
*file
, int from_tty
,
4794 struct cmd_list_element
*c
,
4797 fprintf_filtered (file
,
4798 _("Controlling the inferior in "
4799 "asynchronous mode is %s.\n"), value
);
4802 /* Temporary copies of permission settings. */
4804 static int may_write_registers_1
= 1;
4805 static int may_write_memory_1
= 1;
4806 static int may_insert_breakpoints_1
= 1;
4807 static int may_insert_tracepoints_1
= 1;
4808 static int may_insert_fast_tracepoints_1
= 1;
4809 static int may_stop_1
= 1;
4811 /* Make the user-set values match the real values again. */
4814 update_target_permissions (void)
4816 may_write_registers_1
= may_write_registers
;
4817 may_write_memory_1
= may_write_memory
;
4818 may_insert_breakpoints_1
= may_insert_breakpoints
;
4819 may_insert_tracepoints_1
= may_insert_tracepoints
;
4820 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4821 may_stop_1
= may_stop
;
4824 /* The one function handles (most of) the permission flags in the same
4828 set_target_permissions (char *args
, int from_tty
,
4829 struct cmd_list_element
*c
)
4831 if (target_has_execution
)
4833 update_target_permissions ();
4834 error (_("Cannot change this setting while the inferior is running."));
4837 /* Make the real values match the user-changed values. */
4838 may_write_registers
= may_write_registers_1
;
4839 may_insert_breakpoints
= may_insert_breakpoints_1
;
4840 may_insert_tracepoints
= may_insert_tracepoints_1
;
4841 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4842 may_stop
= may_stop_1
;
4843 update_observer_mode ();
4846 /* Set memory write permission independently of observer mode. */
4849 set_write_memory_permission (char *args
, int from_tty
,
4850 struct cmd_list_element
*c
)
4852 /* Make the real values match the user-changed values. */
4853 may_write_memory
= may_write_memory_1
;
4854 update_observer_mode ();
4859 initialize_targets (void)
4861 init_dummy_target ();
4862 push_target (&dummy_target
);
4864 add_info ("target", target_info
, targ_desc
);
4865 add_info ("files", target_info
, targ_desc
);
4867 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
4868 Set target debugging."), _("\
4869 Show target debugging."), _("\
4870 When non-zero, target debugging is enabled. Higher numbers are more\n\
4871 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4875 &setdebuglist
, &showdebuglist
);
4877 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
4878 &trust_readonly
, _("\
4879 Set mode for reading from readonly sections."), _("\
4880 Show mode for reading from readonly sections."), _("\
4881 When this mode is on, memory reads from readonly sections (such as .text)\n\
4882 will be read from the object file instead of from the target. This will\n\
4883 result in significant performance improvement for remote targets."),
4885 show_trust_readonly
,
4886 &setlist
, &showlist
);
4888 add_com ("monitor", class_obscure
, do_monitor_command
,
4889 _("Send a command to the remote monitor (remote targets only)."));
4891 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
4892 _("Print the name of each layer of the internal target stack."),
4893 &maintenanceprintlist
);
4895 add_setshow_boolean_cmd ("target-async", no_class
,
4896 &target_async_permitted_1
, _("\
4897 Set whether gdb controls the inferior in asynchronous mode."), _("\
4898 Show whether gdb controls the inferior in asynchronous mode."), _("\
4899 Tells gdb whether to control the inferior in asynchronous mode."),
4900 set_target_async_command
,
4901 show_target_async_command
,
4905 add_setshow_boolean_cmd ("may-write-registers", class_support
,
4906 &may_write_registers_1
, _("\
4907 Set permission to write into registers."), _("\
4908 Show permission to write into registers."), _("\
4909 When this permission is on, GDB may write into the target's registers.\n\
4910 Otherwise, any sort of write attempt will result in an error."),
4911 set_target_permissions
, NULL
,
4912 &setlist
, &showlist
);
4914 add_setshow_boolean_cmd ("may-write-memory", class_support
,
4915 &may_write_memory_1
, _("\
4916 Set permission to write into target memory."), _("\
4917 Show permission to write into target memory."), _("\
4918 When this permission is on, GDB may write into the target's memory.\n\
4919 Otherwise, any sort of write attempt will result in an error."),
4920 set_write_memory_permission
, NULL
,
4921 &setlist
, &showlist
);
4923 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
4924 &may_insert_breakpoints_1
, _("\
4925 Set permission to insert breakpoints in the target."), _("\
4926 Show permission to insert breakpoints in the target."), _("\
4927 When this permission is on, GDB may insert breakpoints in the program.\n\
4928 Otherwise, any sort of insertion attempt will result in an error."),
4929 set_target_permissions
, NULL
,
4930 &setlist
, &showlist
);
4932 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
4933 &may_insert_tracepoints_1
, _("\
4934 Set permission to insert tracepoints in the target."), _("\
4935 Show permission to insert tracepoints in the target."), _("\
4936 When this permission is on, GDB may insert tracepoints in the program.\n\
4937 Otherwise, any sort of insertion attempt will result in an error."),
4938 set_target_permissions
, NULL
,
4939 &setlist
, &showlist
);
4941 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
4942 &may_insert_fast_tracepoints_1
, _("\
4943 Set permission to insert fast tracepoints in the target."), _("\
4944 Show permission to insert fast tracepoints in the target."), _("\
4945 When this permission is on, GDB may insert fast tracepoints.\n\
4946 Otherwise, any sort of insertion attempt will result in an error."),
4947 set_target_permissions
, NULL
,
4948 &setlist
, &showlist
);
4950 add_setshow_boolean_cmd ("may-interrupt", class_support
,
4952 Set permission to interrupt or signal the target."), _("\
4953 Show permission to interrupt or signal the target."), _("\
4954 When this permission is on, GDB may interrupt/stop the target's execution.\n\
4955 Otherwise, any attempt to interrupt or stop will be ignored."),
4956 set_target_permissions
, NULL
,
4957 &setlist
, &showlist
);