1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2014 Free Software Foundation, Inc.
5 Contributed by Cygnus Support.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "target-dcache.h"
36 #include "gdb_assert.h"
38 #include "exceptions.h"
39 #include "target-descriptions.h"
40 #include "gdbthread.h"
43 #include "inline-frame.h"
44 #include "tracepoint.h"
45 #include "gdb/fileio.h"
48 static void target_info (char *, int);
50 static void default_terminal_info (struct target_ops
*, const char *, int);
52 static int default_watchpoint_addr_within_range (struct target_ops
*,
53 CORE_ADDR
, CORE_ADDR
, int);
55 static int default_region_ok_for_hw_watchpoint (struct target_ops
*,
58 static void default_rcmd (struct target_ops
*, char *, struct ui_file
*);
60 static ptid_t
default_get_ada_task_ptid (struct target_ops
*self
,
63 static void tcomplain (void) ATTRIBUTE_NORETURN
;
65 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
67 static int return_zero (void);
69 static void *return_null (void);
71 void target_ignore (void);
73 static void target_command (char *, int);
75 static struct target_ops
*find_default_run_target (char *);
77 static target_xfer_partial_ftype default_xfer_partial
;
79 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
82 static int dummy_find_memory_regions (struct target_ops
*self
,
83 find_memory_region_ftype ignore1
,
86 static char *dummy_make_corefile_notes (struct target_ops
*self
,
87 bfd
*ignore1
, int *ignore2
);
89 static int find_default_can_async_p (struct target_ops
*ignore
);
91 static int find_default_is_async_p (struct target_ops
*ignore
);
93 static enum exec_direction_kind default_execution_direction
94 (struct target_ops
*self
);
96 #include "target-delegates.c"
98 static void init_dummy_target (void);
100 static struct target_ops debug_target
;
102 static void debug_to_open (char *, int);
104 static void debug_to_prepare_to_store (struct target_ops
*self
,
107 static void debug_to_files_info (struct target_ops
*);
109 static int debug_to_insert_breakpoint (struct target_ops
*, struct gdbarch
*,
110 struct bp_target_info
*);
112 static int debug_to_remove_breakpoint (struct target_ops
*, struct gdbarch
*,
113 struct bp_target_info
*);
115 static int debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
118 static int debug_to_insert_hw_breakpoint (struct target_ops
*self
,
120 struct bp_target_info
*);
122 static int debug_to_remove_hw_breakpoint (struct target_ops
*self
,
124 struct bp_target_info
*);
126 static int debug_to_insert_watchpoint (struct target_ops
*self
,
128 struct expression
*);
130 static int debug_to_remove_watchpoint (struct target_ops
*self
,
132 struct expression
*);
134 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
136 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
137 CORE_ADDR
, CORE_ADDR
, int);
139 static int debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
142 static int debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
144 struct expression
*);
146 static void debug_to_terminal_init (struct target_ops
*self
);
148 static void debug_to_terminal_inferior (struct target_ops
*self
);
150 static void debug_to_terminal_ours_for_output (struct target_ops
*self
);
152 static void debug_to_terminal_save_ours (struct target_ops
*self
);
154 static void debug_to_terminal_ours (struct target_ops
*self
);
156 static void debug_to_load (struct target_ops
*self
, char *, int);
158 static int debug_to_can_run (struct target_ops
*self
);
160 static void debug_to_stop (struct target_ops
*self
, ptid_t
);
162 /* Pointer to array of target architecture structures; the size of the
163 array; the current index into the array; the allocated size of the
165 struct target_ops
**target_structs
;
166 unsigned target_struct_size
;
167 unsigned target_struct_allocsize
;
168 #define DEFAULT_ALLOCSIZE 10
170 /* The initial current target, so that there is always a semi-valid
173 static struct target_ops dummy_target
;
175 /* Top of target stack. */
177 static struct target_ops
*target_stack
;
179 /* The target structure we are currently using to talk to a process
180 or file or whatever "inferior" we have. */
182 struct target_ops current_target
;
184 /* Command list for target. */
186 static struct cmd_list_element
*targetlist
= NULL
;
188 /* Nonzero if we should trust readonly sections from the
189 executable when reading memory. */
191 static int trust_readonly
= 0;
193 /* Nonzero if we should show true memory content including
194 memory breakpoint inserted by gdb. */
196 static int show_memory_breakpoints
= 0;
198 /* These globals control whether GDB attempts to perform these
199 operations; they are useful for targets that need to prevent
200 inadvertant disruption, such as in non-stop mode. */
202 int may_write_registers
= 1;
204 int may_write_memory
= 1;
206 int may_insert_breakpoints
= 1;
208 int may_insert_tracepoints
= 1;
210 int may_insert_fast_tracepoints
= 1;
214 /* Non-zero if we want to see trace of target level stuff. */
216 static unsigned int targetdebug
= 0;
218 show_targetdebug (struct ui_file
*file
, int from_tty
,
219 struct cmd_list_element
*c
, const char *value
)
221 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
224 static void setup_target_debug (void);
226 /* The user just typed 'target' without the name of a target. */
229 target_command (char *arg
, int from_tty
)
231 fputs_filtered ("Argument required (target name). Try `help target'\n",
235 /* Default target_has_* methods for process_stratum targets. */
238 default_child_has_all_memory (struct target_ops
*ops
)
240 /* If no inferior selected, then we can't read memory here. */
241 if (ptid_equal (inferior_ptid
, null_ptid
))
248 default_child_has_memory (struct target_ops
*ops
)
250 /* If no inferior selected, then we can't read memory here. */
251 if (ptid_equal (inferior_ptid
, null_ptid
))
258 default_child_has_stack (struct target_ops
*ops
)
260 /* If no inferior selected, there's no stack. */
261 if (ptid_equal (inferior_ptid
, null_ptid
))
268 default_child_has_registers (struct target_ops
*ops
)
270 /* Can't read registers from no inferior. */
271 if (ptid_equal (inferior_ptid
, null_ptid
))
278 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
280 /* If there's no thread selected, then we can't make it run through
282 if (ptid_equal (the_ptid
, null_ptid
))
290 target_has_all_memory_1 (void)
292 struct target_ops
*t
;
294 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
295 if (t
->to_has_all_memory (t
))
302 target_has_memory_1 (void)
304 struct target_ops
*t
;
306 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
307 if (t
->to_has_memory (t
))
314 target_has_stack_1 (void)
316 struct target_ops
*t
;
318 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
319 if (t
->to_has_stack (t
))
326 target_has_registers_1 (void)
328 struct target_ops
*t
;
330 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
331 if (t
->to_has_registers (t
))
338 target_has_execution_1 (ptid_t the_ptid
)
340 struct target_ops
*t
;
342 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
343 if (t
->to_has_execution (t
, the_ptid
))
350 target_has_execution_current (void)
352 return target_has_execution_1 (inferior_ptid
);
355 /* Complete initialization of T. This ensures that various fields in
356 T are set, if needed by the target implementation. */
359 complete_target_initialization (struct target_ops
*t
)
361 /* Provide default values for all "must have" methods. */
362 if (t
->to_xfer_partial
== NULL
)
363 t
->to_xfer_partial
= default_xfer_partial
;
365 if (t
->to_has_all_memory
== NULL
)
366 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
368 if (t
->to_has_memory
== NULL
)
369 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
371 if (t
->to_has_stack
== NULL
)
372 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
374 if (t
->to_has_registers
== NULL
)
375 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
377 if (t
->to_has_execution
== NULL
)
378 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
380 install_delegators (t
);
383 /* Add possible target architecture T to the list and add a new
384 command 'target T->to_shortname'. Set COMPLETER as the command's
385 completer if not NULL. */
388 add_target_with_completer (struct target_ops
*t
,
389 completer_ftype
*completer
)
391 struct cmd_list_element
*c
;
393 complete_target_initialization (t
);
397 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
398 target_structs
= (struct target_ops
**) xmalloc
399 (target_struct_allocsize
* sizeof (*target_structs
));
401 if (target_struct_size
>= target_struct_allocsize
)
403 target_struct_allocsize
*= 2;
404 target_structs
= (struct target_ops
**)
405 xrealloc ((char *) target_structs
,
406 target_struct_allocsize
* sizeof (*target_structs
));
408 target_structs
[target_struct_size
++] = t
;
410 if (targetlist
== NULL
)
411 add_prefix_cmd ("target", class_run
, target_command
, _("\
412 Connect to a target machine or process.\n\
413 The first argument is the type or protocol of the target machine.\n\
414 Remaining arguments are interpreted by the target protocol. For more\n\
415 information on the arguments for a particular protocol, type\n\
416 `help target ' followed by the protocol name."),
417 &targetlist
, "target ", 0, &cmdlist
);
418 c
= add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
,
420 if (completer
!= NULL
)
421 set_cmd_completer (c
, completer
);
424 /* Add a possible target architecture to the list. */
427 add_target (struct target_ops
*t
)
429 add_target_with_completer (t
, NULL
);
435 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
437 struct cmd_list_element
*c
;
440 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
442 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
443 alt
= xstrprintf ("target %s", t
->to_shortname
);
444 deprecate_cmd (c
, alt
);
457 struct target_ops
*t
;
459 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
460 if (t
->to_kill
!= NULL
)
463 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
473 target_load (char *arg
, int from_tty
)
475 target_dcache_invalidate ();
476 (*current_target
.to_load
) (¤t_target
, arg
, from_tty
);
480 target_create_inferior (char *exec_file
, char *args
,
481 char **env
, int from_tty
)
483 struct target_ops
*t
;
485 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
487 if (t
->to_create_inferior
!= NULL
)
489 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
491 fprintf_unfiltered (gdb_stdlog
,
492 "target_create_inferior (%s, %s, xxx, %d)\n",
493 exec_file
, args
, from_tty
);
498 internal_error (__FILE__
, __LINE__
,
499 _("could not find a target to create inferior"));
503 target_terminal_inferior (void)
505 /* A background resume (``run&'') should leave GDB in control of the
506 terminal. Use target_can_async_p, not target_is_async_p, since at
507 this point the target is not async yet. However, if sync_execution
508 is not set, we know it will become async prior to resume. */
509 if (target_can_async_p () && !sync_execution
)
512 /* If GDB is resuming the inferior in the foreground, install
513 inferior's terminal modes. */
514 (*current_target
.to_terminal_inferior
) (¤t_target
);
518 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
519 struct target_ops
*t
)
521 errno
= EIO
; /* Can't read/write this location. */
522 return 0; /* No bytes handled. */
528 error (_("You can't do that when your target is `%s'"),
529 current_target
.to_shortname
);
535 error (_("You can't do that without a process to debug."));
539 default_terminal_info (struct target_ops
*self
, const char *args
, int from_tty
)
541 printf_unfiltered (_("No saved terminal information.\n"));
544 /* A default implementation for the to_get_ada_task_ptid target method.
546 This function builds the PTID by using both LWP and TID as part of
547 the PTID lwp and tid elements. The pid used is the pid of the
551 default_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long tid
)
553 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
556 static enum exec_direction_kind
557 default_execution_direction (struct target_ops
*self
)
559 if (!target_can_execute_reverse
)
561 else if (!target_can_async_p ())
564 gdb_assert_not_reached ("\
565 to_execution_direction must be implemented for reverse async");
568 /* Go through the target stack from top to bottom, copying over zero
569 entries in current_target, then filling in still empty entries. In
570 effect, we are doing class inheritance through the pushed target
573 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
574 is currently implemented, is that it discards any knowledge of
575 which target an inherited method originally belonged to.
576 Consequently, new new target methods should instead explicitly and
577 locally search the target stack for the target that can handle the
581 update_current_target (void)
583 struct target_ops
*t
;
585 /* First, reset current's contents. */
586 memset (¤t_target
, 0, sizeof (current_target
));
588 /* Install the delegators. */
589 install_delegators (¤t_target
);
591 #define INHERIT(FIELD, TARGET) \
592 if (!current_target.FIELD) \
593 current_target.FIELD = (TARGET)->FIELD
595 for (t
= target_stack
; t
; t
= t
->beneath
)
597 INHERIT (to_shortname
, t
);
598 INHERIT (to_longname
, t
);
600 /* Do not inherit to_open. */
601 /* Do not inherit to_close. */
602 /* Do not inherit to_attach. */
603 /* Do not inherit to_post_attach. */
604 INHERIT (to_attach_no_wait
, t
);
605 /* Do not inherit to_detach. */
606 /* Do not inherit to_disconnect. */
607 /* Do not inherit to_resume. */
608 /* Do not inherit to_wait. */
609 /* Do not inherit to_fetch_registers. */
610 /* Do not inherit to_store_registers. */
611 /* Do not inherit to_prepare_to_store. */
612 INHERIT (deprecated_xfer_memory
, t
);
613 /* Do not inherit to_files_info. */
614 /* Do not inherit to_insert_breakpoint. */
615 /* Do not inherit to_remove_breakpoint. */
616 /* Do not inherit to_can_use_hw_breakpoint. */
617 /* Do not inherit to_insert_hw_breakpoint. */
618 /* Do not inherit to_remove_hw_breakpoint. */
619 /* Do not inherit to_ranged_break_num_registers. */
620 /* Do not inherit to_insert_watchpoint. */
621 /* Do not inherit to_remove_watchpoint. */
622 /* Do not inherit to_insert_mask_watchpoint. */
623 /* Do not inherit to_remove_mask_watchpoint. */
624 /* Do not inherit to_stopped_data_address. */
625 INHERIT (to_have_steppable_watchpoint
, t
);
626 INHERIT (to_have_continuable_watchpoint
, t
);
627 /* Do not inherit to_stopped_by_watchpoint. */
628 /* Do not inherit to_watchpoint_addr_within_range. */
629 /* Do not inherit to_region_ok_for_hw_watchpoint. */
630 /* Do not inherit to_can_accel_watchpoint_condition. */
631 /* Do not inherit to_masked_watch_num_registers. */
632 /* Do not inherit to_terminal_init. */
633 /* Do not inherit to_terminal_inferior. */
634 /* Do not inherit to_terminal_ours_for_output. */
635 /* Do not inherit to_terminal_ours. */
636 /* Do not inherit to_terminal_save_ours. */
637 /* Do not inherit to_terminal_info. */
638 /* Do not inherit to_kill. */
639 /* Do not inherit to_load. */
640 /* Do no inherit to_create_inferior. */
641 /* Do not inherit to_post_startup_inferior. */
642 /* Do not inherit to_insert_fork_catchpoint. */
643 /* Do not inherit to_remove_fork_catchpoint. */
644 /* Do not inherit to_insert_vfork_catchpoint. */
645 /* Do not inherit to_remove_vfork_catchpoint. */
646 /* Do not inherit to_follow_fork. */
647 /* Do not inherit to_insert_exec_catchpoint. */
648 /* Do not inherit to_remove_exec_catchpoint. */
649 /* Do not inherit to_set_syscall_catchpoint. */
650 /* Do not inherit to_has_exited. */
651 /* Do not inherit to_mourn_inferior. */
652 INHERIT (to_can_run
, t
);
653 /* Do not inherit to_pass_signals. */
654 /* Do not inherit to_program_signals. */
655 /* Do not inherit to_thread_alive. */
656 /* Do not inherit to_find_new_threads. */
657 /* Do not inherit to_pid_to_str. */
658 /* Do not inherit to_extra_thread_info. */
659 /* Do not inherit to_thread_name. */
660 INHERIT (to_stop
, t
);
661 /* Do not inherit to_xfer_partial. */
662 /* Do not inherit to_rcmd. */
663 /* Do not inherit to_pid_to_exec_file. */
664 /* Do not inherit to_log_command. */
665 INHERIT (to_stratum
, t
);
666 /* Do not inherit to_has_all_memory. */
667 /* Do not inherit to_has_memory. */
668 /* Do not inherit to_has_stack. */
669 /* Do not inherit to_has_registers. */
670 /* Do not inherit to_has_execution. */
671 INHERIT (to_has_thread_control
, t
);
672 /* Do not inherit to_can_async_p. */
673 /* Do not inherit to_is_async_p. */
674 /* Do not inherit to_async. */
675 /* Do not inherit to_find_memory_regions. */
676 /* Do not inherit to_make_corefile_notes. */
677 /* Do not inherit to_get_bookmark. */
678 /* Do not inherit to_goto_bookmark. */
679 /* Do not inherit to_get_thread_local_address. */
680 /* Do not inherit to_can_execute_reverse. */
681 /* Do not inherit to_execution_direction. */
682 /* Do not inherit to_thread_architecture. */
683 /* Do not inherit to_read_description. */
684 /* Do not inherit to_get_ada_task_ptid. */
685 /* Do not inherit to_search_memory. */
686 /* Do not inherit to_supports_multi_process. */
687 /* Do not inherit to_supports_enable_disable_tracepoint. */
688 /* Do not inherit to_supports_string_tracing. */
689 /* Do not inherit to_trace_init. */
690 /* Do not inherit to_download_tracepoint. */
691 /* Do not inherit to_can_download_tracepoint. */
692 /* Do not inherit to_download_trace_state_variable. */
693 /* Do not inherit to_enable_tracepoint. */
694 /* Do not inherit to_disable_tracepoint. */
695 /* Do not inherit to_trace_set_readonly_regions. */
696 /* Do not inherit to_trace_start. */
697 /* Do not inherit to_get_trace_status. */
698 /* Do not inherit to_get_tracepoint_status. */
699 /* Do not inherit to_trace_stop. */
700 /* Do not inherit to_trace_find. */
701 /* Do not inherit to_get_trace_state_variable_value. */
702 /* Do not inherit to_save_trace_data. */
703 /* Do not inherit to_upload_tracepoints. */
704 /* Do not inherit to_upload_trace_state_variables. */
705 /* Do not inherit to_get_raw_trace_data. */
706 /* Do not inherit to_get_min_fast_tracepoint_insn_len. */
707 /* Do not inherit to_set_disconnected_tracing. */
708 /* Do not inherit to_set_circular_trace_buffer. */
709 /* Do not inherit to_set_trace_buffer_size. */
710 /* Do not inherit to_set_trace_notes. */
711 /* Do not inherit to_get_tib_address. */
712 /* Do not inherit to_set_permissions. */
713 INHERIT (to_static_tracepoint_marker_at
, t
);
714 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
715 INHERIT (to_traceframe_info
, t
);
716 INHERIT (to_use_agent
, t
);
717 INHERIT (to_can_use_agent
, t
);
718 INHERIT (to_augmented_libraries_svr4_read
, t
);
719 INHERIT (to_magic
, t
);
720 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
721 INHERIT (to_can_run_breakpoint_commands
, t
);
722 /* Do not inherit to_memory_map. */
723 /* Do not inherit to_flash_erase. */
724 /* Do not inherit to_flash_done. */
728 /* Clean up a target struct so it no longer has any zero pointers in
729 it. Some entries are defaulted to a method that print an error,
730 others are hard-wired to a standard recursive default. */
732 #define de_fault(field, value) \
733 if (!current_target.field) \
734 current_target.field = value
737 (void (*) (char *, int))
740 (void (*) (struct target_ops
*))
742 de_fault (deprecated_xfer_memory
,
743 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
744 struct mem_attrib
*, struct target_ops
*))
746 de_fault (to_can_run
,
747 (int (*) (struct target_ops
*))
750 (void (*) (struct target_ops
*, ptid_t
))
752 current_target
.to_read_description
= NULL
;
753 de_fault (to_static_tracepoint_marker_at
,
754 (int (*) (struct target_ops
*,
755 CORE_ADDR
, struct static_tracepoint_marker
*))
757 de_fault (to_static_tracepoint_markers_by_strid
,
758 (VEC(static_tracepoint_marker_p
) * (*) (struct target_ops
*,
761 de_fault (to_traceframe_info
,
762 (struct traceframe_info
* (*) (struct target_ops
*))
764 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
765 (int (*) (struct target_ops
*))
767 de_fault (to_can_run_breakpoint_commands
,
768 (int (*) (struct target_ops
*))
770 de_fault (to_use_agent
,
771 (int (*) (struct target_ops
*, int))
773 de_fault (to_can_use_agent
,
774 (int (*) (struct target_ops
*))
776 de_fault (to_augmented_libraries_svr4_read
,
777 (int (*) (struct target_ops
*))
782 /* Finally, position the target-stack beneath the squashed
783 "current_target". That way code looking for a non-inherited
784 target method can quickly and simply find it. */
785 current_target
.beneath
= target_stack
;
788 setup_target_debug ();
791 /* Push a new target type into the stack of the existing target accessors,
792 possibly superseding some of the existing accessors.
794 Rather than allow an empty stack, we always have the dummy target at
795 the bottom stratum, so we can call the function vectors without
799 push_target (struct target_ops
*t
)
801 struct target_ops
**cur
;
803 /* Check magic number. If wrong, it probably means someone changed
804 the struct definition, but not all the places that initialize one. */
805 if (t
->to_magic
!= OPS_MAGIC
)
807 fprintf_unfiltered (gdb_stderr
,
808 "Magic number of %s target struct wrong\n",
810 internal_error (__FILE__
, __LINE__
,
811 _("failed internal consistency check"));
814 /* Find the proper stratum to install this target in. */
815 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
817 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
821 /* If there's already targets at this stratum, remove them. */
822 /* FIXME: cagney/2003-10-15: I think this should be popping all
823 targets to CUR, and not just those at this stratum level. */
824 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
826 /* There's already something at this stratum level. Close it,
827 and un-hook it from the stack. */
828 struct target_ops
*tmp
= (*cur
);
830 (*cur
) = (*cur
)->beneath
;
835 /* We have removed all targets in our stratum, now add the new one. */
839 update_current_target ();
842 /* Remove a target_ops vector from the stack, wherever it may be.
843 Return how many times it was removed (0 or 1). */
846 unpush_target (struct target_ops
*t
)
848 struct target_ops
**cur
;
849 struct target_ops
*tmp
;
851 if (t
->to_stratum
== dummy_stratum
)
852 internal_error (__FILE__
, __LINE__
,
853 _("Attempt to unpush the dummy target"));
855 /* Look for the specified target. Note that we assume that a target
856 can only occur once in the target stack. */
858 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
864 /* If we don't find target_ops, quit. Only open targets should be
869 /* Unchain the target. */
871 (*cur
) = (*cur
)->beneath
;
874 update_current_target ();
876 /* Finally close the target. Note we do this after unchaining, so
877 any target method calls from within the target_close
878 implementation don't end up in T anymore. */
885 pop_all_targets_above (enum strata above_stratum
)
887 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
889 if (!unpush_target (target_stack
))
891 fprintf_unfiltered (gdb_stderr
,
892 "pop_all_targets couldn't find target %s\n",
893 target_stack
->to_shortname
);
894 internal_error (__FILE__
, __LINE__
,
895 _("failed internal consistency check"));
902 pop_all_targets (void)
904 pop_all_targets_above (dummy_stratum
);
907 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
910 target_is_pushed (struct target_ops
*t
)
912 struct target_ops
**cur
;
914 /* Check magic number. If wrong, it probably means someone changed
915 the struct definition, but not all the places that initialize one. */
916 if (t
->to_magic
!= OPS_MAGIC
)
918 fprintf_unfiltered (gdb_stderr
,
919 "Magic number of %s target struct wrong\n",
921 internal_error (__FILE__
, __LINE__
,
922 _("failed internal consistency check"));
925 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
932 /* Using the objfile specified in OBJFILE, find the address for the
933 current thread's thread-local storage with offset OFFSET. */
935 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
937 volatile CORE_ADDR addr
= 0;
938 struct target_ops
*target
;
940 for (target
= current_target
.beneath
;
942 target
= target
->beneath
)
944 if (target
->to_get_thread_local_address
!= NULL
)
949 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
951 ptid_t ptid
= inferior_ptid
;
952 volatile struct gdb_exception ex
;
954 TRY_CATCH (ex
, RETURN_MASK_ALL
)
958 /* Fetch the load module address for this objfile. */
959 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
961 /* If it's 0, throw the appropriate exception. */
963 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
964 _("TLS load module not found"));
966 addr
= target
->to_get_thread_local_address (target
, ptid
,
969 /* If an error occurred, print TLS related messages here. Otherwise,
970 throw the error to some higher catcher. */
973 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
977 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
978 error (_("Cannot find thread-local variables "
979 "in this thread library."));
981 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
982 if (objfile_is_library
)
983 error (_("Cannot find shared library `%s' in dynamic"
984 " linker's load module list"), objfile_name (objfile
));
986 error (_("Cannot find executable file `%s' in dynamic"
987 " linker's load module list"), objfile_name (objfile
));
989 case TLS_NOT_ALLOCATED_YET_ERROR
:
990 if (objfile_is_library
)
991 error (_("The inferior has not yet allocated storage for"
992 " thread-local variables in\n"
993 "the shared library `%s'\n"
995 objfile_name (objfile
), target_pid_to_str (ptid
));
997 error (_("The inferior has not yet allocated storage for"
998 " thread-local variables in\n"
999 "the executable `%s'\n"
1001 objfile_name (objfile
), target_pid_to_str (ptid
));
1003 case TLS_GENERIC_ERROR
:
1004 if (objfile_is_library
)
1005 error (_("Cannot find thread-local storage for %s, "
1006 "shared library %s:\n%s"),
1007 target_pid_to_str (ptid
),
1008 objfile_name (objfile
), ex
.message
);
1010 error (_("Cannot find thread-local storage for %s, "
1011 "executable file %s:\n%s"),
1012 target_pid_to_str (ptid
),
1013 objfile_name (objfile
), ex
.message
);
1016 throw_exception (ex
);
1021 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1022 TLS is an ABI-specific thing. But we don't do that yet. */
1024 error (_("Cannot find thread-local variables on this target"));
1030 target_xfer_status_to_string (enum target_xfer_status err
)
1032 #define CASE(X) case X: return #X
1035 CASE(TARGET_XFER_E_IO
);
1036 CASE(TARGET_XFER_E_UNAVAILABLE
);
1045 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1047 /* target_read_string -- read a null terminated string, up to LEN bytes,
1048 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1049 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1050 is responsible for freeing it. Return the number of bytes successfully
1054 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1056 int tlen
, offset
, i
;
1060 int buffer_allocated
;
1062 unsigned int nbytes_read
= 0;
1064 gdb_assert (string
);
1066 /* Small for testing. */
1067 buffer_allocated
= 4;
1068 buffer
= xmalloc (buffer_allocated
);
1073 tlen
= MIN (len
, 4 - (memaddr
& 3));
1074 offset
= memaddr
& 3;
1076 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1079 /* The transfer request might have crossed the boundary to an
1080 unallocated region of memory. Retry the transfer, requesting
1084 errcode
= target_read_memory (memaddr
, buf
, 1);
1089 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1093 bytes
= bufptr
- buffer
;
1094 buffer_allocated
*= 2;
1095 buffer
= xrealloc (buffer
, buffer_allocated
);
1096 bufptr
= buffer
+ bytes
;
1099 for (i
= 0; i
< tlen
; i
++)
1101 *bufptr
++ = buf
[i
+ offset
];
1102 if (buf
[i
+ offset
] == '\000')
1104 nbytes_read
+= i
+ 1;
1111 nbytes_read
+= tlen
;
1120 struct target_section_table
*
1121 target_get_section_table (struct target_ops
*target
)
1123 struct target_ops
*t
;
1126 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1128 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1129 if (t
->to_get_section_table
!= NULL
)
1130 return (*t
->to_get_section_table
) (t
);
1135 /* Find a section containing ADDR. */
1137 struct target_section
*
1138 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1140 struct target_section_table
*table
= target_get_section_table (target
);
1141 struct target_section
*secp
;
1146 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1148 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1154 /* Read memory from the live target, even if currently inspecting a
1155 traceframe. The return is the same as that of target_read. */
1157 static enum target_xfer_status
1158 target_read_live_memory (enum target_object object
,
1159 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1160 ULONGEST
*xfered_len
)
1162 enum target_xfer_status ret
;
1163 struct cleanup
*cleanup
;
1165 /* Switch momentarily out of tfind mode so to access live memory.
1166 Note that this must not clear global state, such as the frame
1167 cache, which must still remain valid for the previous traceframe.
1168 We may be _building_ the frame cache at this point. */
1169 cleanup
= make_cleanup_restore_traceframe_number ();
1170 set_traceframe_number (-1);
1172 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1173 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1175 do_cleanups (cleanup
);
1179 /* Using the set of read-only target sections of OPS, read live
1180 read-only memory. Note that the actual reads start from the
1181 top-most target again.
1183 For interface/parameters/return description see target.h,
1186 static enum target_xfer_status
1187 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1188 enum target_object object
,
1189 gdb_byte
*readbuf
, ULONGEST memaddr
,
1190 ULONGEST len
, ULONGEST
*xfered_len
)
1192 struct target_section
*secp
;
1193 struct target_section_table
*table
;
1195 secp
= target_section_by_addr (ops
, memaddr
);
1197 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1198 secp
->the_bfd_section
)
1201 struct target_section
*p
;
1202 ULONGEST memend
= memaddr
+ len
;
1204 table
= target_get_section_table (ops
);
1206 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1208 if (memaddr
>= p
->addr
)
1210 if (memend
<= p
->endaddr
)
1212 /* Entire transfer is within this section. */
1213 return target_read_live_memory (object
, memaddr
,
1214 readbuf
, len
, xfered_len
);
1216 else if (memaddr
>= p
->endaddr
)
1218 /* This section ends before the transfer starts. */
1223 /* This section overlaps the transfer. Just do half. */
1224 len
= p
->endaddr
- memaddr
;
1225 return target_read_live_memory (object
, memaddr
,
1226 readbuf
, len
, xfered_len
);
1232 return TARGET_XFER_EOF
;
1235 /* Read memory from more than one valid target. A core file, for
1236 instance, could have some of memory but delegate other bits to
1237 the target below it. So, we must manually try all targets. */
1239 static enum target_xfer_status
1240 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1241 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1242 ULONGEST
*xfered_len
)
1244 enum target_xfer_status res
;
1248 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1249 readbuf
, writebuf
, memaddr
, len
,
1251 if (res
== TARGET_XFER_OK
)
1254 /* Stop if the target reports that the memory is not available. */
1255 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1258 /* We want to continue past core files to executables, but not
1259 past a running target's memory. */
1260 if (ops
->to_has_all_memory (ops
))
1265 while (ops
!= NULL
);
1270 /* Perform a partial memory transfer.
1271 For docs see target.h, to_xfer_partial. */
1273 static enum target_xfer_status
1274 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1275 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1276 ULONGEST len
, ULONGEST
*xfered_len
)
1278 enum target_xfer_status res
;
1280 struct mem_region
*region
;
1281 struct inferior
*inf
;
1283 /* For accesses to unmapped overlay sections, read directly from
1284 files. Must do this first, as MEMADDR may need adjustment. */
1285 if (readbuf
!= NULL
&& overlay_debugging
)
1287 struct obj_section
*section
= find_pc_overlay (memaddr
);
1289 if (pc_in_unmapped_range (memaddr
, section
))
1291 struct target_section_table
*table
1292 = target_get_section_table (ops
);
1293 const char *section_name
= section
->the_bfd_section
->name
;
1295 memaddr
= overlay_mapped_address (memaddr
, section
);
1296 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1297 memaddr
, len
, xfered_len
,
1299 table
->sections_end
,
1304 /* Try the executable files, if "trust-readonly-sections" is set. */
1305 if (readbuf
!= NULL
&& trust_readonly
)
1307 struct target_section
*secp
;
1308 struct target_section_table
*table
;
1310 secp
= target_section_by_addr (ops
, memaddr
);
1312 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1313 secp
->the_bfd_section
)
1316 table
= target_get_section_table (ops
);
1317 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1318 memaddr
, len
, xfered_len
,
1320 table
->sections_end
,
1325 /* If reading unavailable memory in the context of traceframes, and
1326 this address falls within a read-only section, fallback to
1327 reading from live memory. */
1328 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1330 VEC(mem_range_s
) *available
;
1332 /* If we fail to get the set of available memory, then the
1333 target does not support querying traceframe info, and so we
1334 attempt reading from the traceframe anyway (assuming the
1335 target implements the old QTro packet then). */
1336 if (traceframe_available_memory (&available
, memaddr
, len
))
1338 struct cleanup
*old_chain
;
1340 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1342 if (VEC_empty (mem_range_s
, available
)
1343 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1345 /* Don't read into the traceframe's available
1347 if (!VEC_empty (mem_range_s
, available
))
1349 LONGEST oldlen
= len
;
1351 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1352 gdb_assert (len
<= oldlen
);
1355 do_cleanups (old_chain
);
1357 /* This goes through the topmost target again. */
1358 res
= memory_xfer_live_readonly_partial (ops
, object
,
1361 if (res
== TARGET_XFER_OK
)
1362 return TARGET_XFER_OK
;
1365 /* No use trying further, we know some memory starting
1366 at MEMADDR isn't available. */
1368 return TARGET_XFER_E_UNAVAILABLE
;
1372 /* Don't try to read more than how much is available, in
1373 case the target implements the deprecated QTro packet to
1374 cater for older GDBs (the target's knowledge of read-only
1375 sections may be outdated by now). */
1376 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1378 do_cleanups (old_chain
);
1382 /* Try GDB's internal data cache. */
1383 region
= lookup_mem_region (memaddr
);
1384 /* region->hi == 0 means there's no upper bound. */
1385 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1388 reg_len
= region
->hi
- memaddr
;
1390 switch (region
->attrib
.mode
)
1393 if (writebuf
!= NULL
)
1394 return TARGET_XFER_E_IO
;
1398 if (readbuf
!= NULL
)
1399 return TARGET_XFER_E_IO
;
1403 /* We only support writing to flash during "load" for now. */
1404 if (writebuf
!= NULL
)
1405 error (_("Writing to flash memory forbidden in this context"));
1409 return TARGET_XFER_E_IO
;
1412 if (!ptid_equal (inferior_ptid
, null_ptid
))
1413 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1418 /* The dcache reads whole cache lines; that doesn't play well
1419 with reading from a trace buffer, because reading outside of
1420 the collected memory range fails. */
1421 && get_traceframe_number () == -1
1422 && (region
->attrib
.cache
1423 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1424 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1426 DCACHE
*dcache
= target_dcache_get_or_init ();
1429 if (readbuf
!= NULL
)
1430 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1432 /* FIXME drow/2006-08-09: If we're going to preserve const
1433 correctness dcache_xfer_memory should take readbuf and
1435 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1438 return TARGET_XFER_E_IO
;
1441 *xfered_len
= (ULONGEST
) l
;
1442 return TARGET_XFER_OK
;
1446 /* If none of those methods found the memory we wanted, fall back
1447 to a target partial transfer. Normally a single call to
1448 to_xfer_partial is enough; if it doesn't recognize an object
1449 it will call the to_xfer_partial of the next target down.
1450 But for memory this won't do. Memory is the only target
1451 object which can be read from more than one valid target.
1452 A core file, for instance, could have some of memory but
1453 delegate other bits to the target below it. So, we must
1454 manually try all targets. */
1456 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1459 /* Make sure the cache gets updated no matter what - if we are writing
1460 to the stack. Even if this write is not tagged as such, we still need
1461 to update the cache. */
1463 if (res
== TARGET_XFER_OK
1466 && target_dcache_init_p ()
1467 && !region
->attrib
.cache
1468 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1469 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1471 DCACHE
*dcache
= target_dcache_get ();
1473 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1476 /* If we still haven't got anything, return the last error. We
1481 /* Perform a partial memory transfer. For docs see target.h,
1484 static enum target_xfer_status
1485 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1486 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1487 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1489 enum target_xfer_status res
;
1491 /* Zero length requests are ok and require no work. */
1493 return TARGET_XFER_EOF
;
1495 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1496 breakpoint insns, thus hiding out from higher layers whether
1497 there are software breakpoints inserted in the code stream. */
1498 if (readbuf
!= NULL
)
1500 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1503 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1504 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1509 struct cleanup
*old_chain
;
1511 /* A large write request is likely to be partially satisfied
1512 by memory_xfer_partial_1. We will continually malloc
1513 and free a copy of the entire write request for breakpoint
1514 shadow handling even though we only end up writing a small
1515 subset of it. Cap writes to 4KB to mitigate this. */
1516 len
= min (4096, len
);
1518 buf
= xmalloc (len
);
1519 old_chain
= make_cleanup (xfree
, buf
);
1520 memcpy (buf
, writebuf
, len
);
1522 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1523 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1526 do_cleanups (old_chain
);
1533 restore_show_memory_breakpoints (void *arg
)
1535 show_memory_breakpoints
= (uintptr_t) arg
;
1539 make_show_memory_breakpoints_cleanup (int show
)
1541 int current
= show_memory_breakpoints
;
1543 show_memory_breakpoints
= show
;
1544 return make_cleanup (restore_show_memory_breakpoints
,
1545 (void *) (uintptr_t) current
);
1548 /* For docs see target.h, to_xfer_partial. */
1550 enum target_xfer_status
1551 target_xfer_partial (struct target_ops
*ops
,
1552 enum target_object object
, const char *annex
,
1553 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1554 ULONGEST offset
, ULONGEST len
,
1555 ULONGEST
*xfered_len
)
1557 enum target_xfer_status retval
;
1559 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1561 /* Transfer is done when LEN is zero. */
1563 return TARGET_XFER_EOF
;
1565 if (writebuf
&& !may_write_memory
)
1566 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1567 core_addr_to_string_nz (offset
), plongest (len
));
1571 /* If this is a memory transfer, let the memory-specific code
1572 have a look at it instead. Memory transfers are more
1574 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1575 || object
== TARGET_OBJECT_CODE_MEMORY
)
1576 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1577 writebuf
, offset
, len
, xfered_len
);
1578 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1580 /* Request the normal memory object from other layers. */
1581 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1585 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1586 writebuf
, offset
, len
, xfered_len
);
1590 const unsigned char *myaddr
= NULL
;
1592 fprintf_unfiltered (gdb_stdlog
,
1593 "%s:target_xfer_partial "
1594 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1597 (annex
? annex
: "(null)"),
1598 host_address_to_string (readbuf
),
1599 host_address_to_string (writebuf
),
1600 core_addr_to_string_nz (offset
),
1601 pulongest (len
), retval
,
1602 pulongest (*xfered_len
));
1608 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1612 fputs_unfiltered (", bytes =", gdb_stdlog
);
1613 for (i
= 0; i
< *xfered_len
; i
++)
1615 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1617 if (targetdebug
< 2 && i
> 0)
1619 fprintf_unfiltered (gdb_stdlog
, " ...");
1622 fprintf_unfiltered (gdb_stdlog
, "\n");
1625 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1629 fputc_unfiltered ('\n', gdb_stdlog
);
1632 /* Check implementations of to_xfer_partial update *XFERED_LEN
1633 properly. Do assertion after printing debug messages, so that we
1634 can find more clues on assertion failure from debugging messages. */
1635 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1636 gdb_assert (*xfered_len
> 0);
1641 /* Read LEN bytes of target memory at address MEMADDR, placing the
1642 results in GDB's memory at MYADDR. Returns either 0 for success or
1643 TARGET_XFER_E_IO if any error occurs.
1645 If an error occurs, no guarantee is made about the contents of the data at
1646 MYADDR. In particular, the caller should not depend upon partial reads
1647 filling the buffer with good data. There is no way for the caller to know
1648 how much good data might have been transfered anyway. Callers that can
1649 deal with partial reads should call target_read (which will retry until
1650 it makes no progress, and then return how much was transferred). */
1653 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1655 /* Dispatch to the topmost target, not the flattened current_target.
1656 Memory accesses check target->to_has_(all_)memory, and the
1657 flattened target doesn't inherit those. */
1658 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1659 myaddr
, memaddr
, len
) == len
)
1662 return TARGET_XFER_E_IO
;
1665 /* Like target_read_memory, but specify explicitly that this is a read
1666 from the target's raw memory. That is, this read bypasses the
1667 dcache, breakpoint shadowing, etc. */
1670 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1672 /* See comment in target_read_memory about why the request starts at
1673 current_target.beneath. */
1674 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1675 myaddr
, memaddr
, len
) == len
)
1678 return TARGET_XFER_E_IO
;
1681 /* Like target_read_memory, but specify explicitly that this is a read from
1682 the target's stack. This may trigger different cache behavior. */
1685 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1687 /* See comment in target_read_memory about why the request starts at
1688 current_target.beneath. */
1689 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1690 myaddr
, memaddr
, len
) == len
)
1693 return TARGET_XFER_E_IO
;
1696 /* Like target_read_memory, but specify explicitly that this is a read from
1697 the target's code. This may trigger different cache behavior. */
1700 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1702 /* See comment in target_read_memory about why the request starts at
1703 current_target.beneath. */
1704 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1705 myaddr
, memaddr
, len
) == len
)
1708 return TARGET_XFER_E_IO
;
1711 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1712 Returns either 0 for success or TARGET_XFER_E_IO if any
1713 error occurs. If an error occurs, no guarantee is made about how
1714 much data got written. Callers that can deal with partial writes
1715 should call target_write. */
1718 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1720 /* See comment in target_read_memory about why the request starts at
1721 current_target.beneath. */
1722 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1723 myaddr
, memaddr
, len
) == len
)
1726 return TARGET_XFER_E_IO
;
1729 /* Write LEN bytes from MYADDR to target raw memory at address
1730 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1731 if any error occurs. If an error occurs, no guarantee is made
1732 about how much data got written. Callers that can deal with
1733 partial writes should call target_write. */
1736 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1738 /* See comment in target_read_memory about why the request starts at
1739 current_target.beneath. */
1740 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1741 myaddr
, memaddr
, len
) == len
)
1744 return TARGET_XFER_E_IO
;
1747 /* Fetch the target's memory map. */
1750 target_memory_map (void)
1752 VEC(mem_region_s
) *result
;
1753 struct mem_region
*last_one
, *this_one
;
1755 struct target_ops
*t
;
1758 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1760 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1761 if (t
->to_memory_map
!= NULL
)
1767 result
= t
->to_memory_map (t
);
1771 qsort (VEC_address (mem_region_s
, result
),
1772 VEC_length (mem_region_s
, result
),
1773 sizeof (struct mem_region
), mem_region_cmp
);
1775 /* Check that regions do not overlap. Simultaneously assign
1776 a numbering for the "mem" commands to use to refer to
1779 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1781 this_one
->number
= ix
;
1783 if (last_one
&& last_one
->hi
> this_one
->lo
)
1785 warning (_("Overlapping regions in memory map: ignoring"));
1786 VEC_free (mem_region_s
, result
);
1789 last_one
= this_one
;
1796 target_flash_erase (ULONGEST address
, LONGEST length
)
1798 struct target_ops
*t
;
1800 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1801 if (t
->to_flash_erase
!= NULL
)
1804 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1805 hex_string (address
), phex (length
, 0));
1806 t
->to_flash_erase (t
, address
, length
);
1814 target_flash_done (void)
1816 struct target_ops
*t
;
1818 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1819 if (t
->to_flash_done
!= NULL
)
1822 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1823 t
->to_flash_done (t
);
1831 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1832 struct cmd_list_element
*c
, const char *value
)
1834 fprintf_filtered (file
,
1835 _("Mode for reading from readonly sections is %s.\n"),
1839 /* More generic transfers. */
1841 static enum target_xfer_status
1842 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1843 const char *annex
, gdb_byte
*readbuf
,
1844 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1845 ULONGEST
*xfered_len
)
1847 if (object
== TARGET_OBJECT_MEMORY
1848 && ops
->deprecated_xfer_memory
!= NULL
)
1849 /* If available, fall back to the target's
1850 "deprecated_xfer_memory" method. */
1855 if (writebuf
!= NULL
)
1857 void *buffer
= xmalloc (len
);
1858 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1860 memcpy (buffer
, writebuf
, len
);
1861 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1862 1/*write*/, NULL
, ops
);
1863 do_cleanups (cleanup
);
1865 if (readbuf
!= NULL
)
1866 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1867 0/*read*/, NULL
, ops
);
1870 *xfered_len
= (ULONGEST
) xfered
;
1871 return TARGET_XFER_E_IO
;
1873 else if (xfered
== 0 && errno
== 0)
1874 /* "deprecated_xfer_memory" uses 0, cross checked against
1875 ERRNO as one indication of an error. */
1876 return TARGET_XFER_EOF
;
1878 return TARGET_XFER_E_IO
;
1882 gdb_assert (ops
->beneath
!= NULL
);
1883 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1884 readbuf
, writebuf
, offset
, len
,
1889 /* Target vector read/write partial wrapper functions. */
1891 static enum target_xfer_status
1892 target_read_partial (struct target_ops
*ops
,
1893 enum target_object object
,
1894 const char *annex
, gdb_byte
*buf
,
1895 ULONGEST offset
, ULONGEST len
,
1896 ULONGEST
*xfered_len
)
1898 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
1902 static enum target_xfer_status
1903 target_write_partial (struct target_ops
*ops
,
1904 enum target_object object
,
1905 const char *annex
, const gdb_byte
*buf
,
1906 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
1908 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
1912 /* Wrappers to perform the full transfer. */
1914 /* For docs on target_read see target.h. */
1917 target_read (struct target_ops
*ops
,
1918 enum target_object object
,
1919 const char *annex
, gdb_byte
*buf
,
1920 ULONGEST offset
, LONGEST len
)
1924 while (xfered
< len
)
1926 ULONGEST xfered_len
;
1927 enum target_xfer_status status
;
1929 status
= target_read_partial (ops
, object
, annex
,
1930 (gdb_byte
*) buf
+ xfered
,
1931 offset
+ xfered
, len
- xfered
,
1934 /* Call an observer, notifying them of the xfer progress? */
1935 if (status
== TARGET_XFER_EOF
)
1937 else if (status
== TARGET_XFER_OK
)
1939 xfered
+= xfered_len
;
1949 /* Assuming that the entire [begin, end) range of memory cannot be
1950 read, try to read whatever subrange is possible to read.
1952 The function returns, in RESULT, either zero or one memory block.
1953 If there's a readable subrange at the beginning, it is completely
1954 read and returned. Any further readable subrange will not be read.
1955 Otherwise, if there's a readable subrange at the end, it will be
1956 completely read and returned. Any readable subranges before it
1957 (obviously, not starting at the beginning), will be ignored. In
1958 other cases -- either no readable subrange, or readable subrange(s)
1959 that is neither at the beginning, or end, nothing is returned.
1961 The purpose of this function is to handle a read across a boundary
1962 of accessible memory in a case when memory map is not available.
1963 The above restrictions are fine for this case, but will give
1964 incorrect results if the memory is 'patchy'. However, supporting
1965 'patchy' memory would require trying to read every single byte,
1966 and it seems unacceptable solution. Explicit memory map is
1967 recommended for this case -- and target_read_memory_robust will
1968 take care of reading multiple ranges then. */
1971 read_whatever_is_readable (struct target_ops
*ops
,
1972 ULONGEST begin
, ULONGEST end
,
1973 VEC(memory_read_result_s
) **result
)
1975 gdb_byte
*buf
= xmalloc (end
- begin
);
1976 ULONGEST current_begin
= begin
;
1977 ULONGEST current_end
= end
;
1979 memory_read_result_s r
;
1980 ULONGEST xfered_len
;
1982 /* If we previously failed to read 1 byte, nothing can be done here. */
1983 if (end
- begin
<= 1)
1989 /* Check that either first or the last byte is readable, and give up
1990 if not. This heuristic is meant to permit reading accessible memory
1991 at the boundary of accessible region. */
1992 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1993 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
1998 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1999 buf
+ (end
-begin
) - 1, end
- 1, 1,
2000 &xfered_len
) == TARGET_XFER_OK
)
2011 /* Loop invariant is that the [current_begin, current_end) was previously
2012 found to be not readable as a whole.
2014 Note loop condition -- if the range has 1 byte, we can't divide the range
2015 so there's no point trying further. */
2016 while (current_end
- current_begin
> 1)
2018 ULONGEST first_half_begin
, first_half_end
;
2019 ULONGEST second_half_begin
, second_half_end
;
2021 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2025 first_half_begin
= current_begin
;
2026 first_half_end
= middle
;
2027 second_half_begin
= middle
;
2028 second_half_end
= current_end
;
2032 first_half_begin
= middle
;
2033 first_half_end
= current_end
;
2034 second_half_begin
= current_begin
;
2035 second_half_end
= middle
;
2038 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2039 buf
+ (first_half_begin
- begin
),
2041 first_half_end
- first_half_begin
);
2043 if (xfer
== first_half_end
- first_half_begin
)
2045 /* This half reads up fine. So, the error must be in the
2047 current_begin
= second_half_begin
;
2048 current_end
= second_half_end
;
2052 /* This half is not readable. Because we've tried one byte, we
2053 know some part of this half if actually redable. Go to the next
2054 iteration to divide again and try to read.
2056 We don't handle the other half, because this function only tries
2057 to read a single readable subrange. */
2058 current_begin
= first_half_begin
;
2059 current_end
= first_half_end
;
2065 /* The [begin, current_begin) range has been read. */
2067 r
.end
= current_begin
;
2072 /* The [current_end, end) range has been read. */
2073 LONGEST rlen
= end
- current_end
;
2075 r
.data
= xmalloc (rlen
);
2076 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2077 r
.begin
= current_end
;
2081 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2085 free_memory_read_result_vector (void *x
)
2087 VEC(memory_read_result_s
) *v
= x
;
2088 memory_read_result_s
*current
;
2091 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2093 xfree (current
->data
);
2095 VEC_free (memory_read_result_s
, v
);
2098 VEC(memory_read_result_s
) *
2099 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2101 VEC(memory_read_result_s
) *result
= 0;
2104 while (xfered
< len
)
2106 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2109 /* If there is no explicit region, a fake one should be created. */
2110 gdb_assert (region
);
2112 if (region
->hi
== 0)
2113 rlen
= len
- xfered
;
2115 rlen
= region
->hi
- offset
;
2117 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2119 /* Cannot read this region. Note that we can end up here only
2120 if the region is explicitly marked inaccessible, or
2121 'inaccessible-by-default' is in effect. */
2126 LONGEST to_read
= min (len
- xfered
, rlen
);
2127 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2129 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2130 (gdb_byte
*) buffer
,
2131 offset
+ xfered
, to_read
);
2132 /* Call an observer, notifying them of the xfer progress? */
2135 /* Got an error reading full chunk. See if maybe we can read
2138 read_whatever_is_readable (ops
, offset
+ xfered
,
2139 offset
+ xfered
+ to_read
, &result
);
2144 struct memory_read_result r
;
2146 r
.begin
= offset
+ xfered
;
2147 r
.end
= r
.begin
+ xfer
;
2148 VEC_safe_push (memory_read_result_s
, result
, &r
);
2158 /* An alternative to target_write with progress callbacks. */
2161 target_write_with_progress (struct target_ops
*ops
,
2162 enum target_object object
,
2163 const char *annex
, const gdb_byte
*buf
,
2164 ULONGEST offset
, LONGEST len
,
2165 void (*progress
) (ULONGEST
, void *), void *baton
)
2169 /* Give the progress callback a chance to set up. */
2171 (*progress
) (0, baton
);
2173 while (xfered
< len
)
2175 ULONGEST xfered_len
;
2176 enum target_xfer_status status
;
2178 status
= target_write_partial (ops
, object
, annex
,
2179 (gdb_byte
*) buf
+ xfered
,
2180 offset
+ xfered
, len
- xfered
,
2183 if (status
== TARGET_XFER_EOF
)
2185 if (TARGET_XFER_STATUS_ERROR_P (status
))
2188 gdb_assert (status
== TARGET_XFER_OK
);
2190 (*progress
) (xfered_len
, baton
);
2192 xfered
+= xfered_len
;
2198 /* For docs on target_write see target.h. */
2201 target_write (struct target_ops
*ops
,
2202 enum target_object object
,
2203 const char *annex
, const gdb_byte
*buf
,
2204 ULONGEST offset
, LONGEST len
)
2206 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2210 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2211 the size of the transferred data. PADDING additional bytes are
2212 available in *BUF_P. This is a helper function for
2213 target_read_alloc; see the declaration of that function for more
2217 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2218 const char *annex
, gdb_byte
**buf_p
, int padding
)
2220 size_t buf_alloc
, buf_pos
;
2223 /* This function does not have a length parameter; it reads the
2224 entire OBJECT). Also, it doesn't support objects fetched partly
2225 from one target and partly from another (in a different stratum,
2226 e.g. a core file and an executable). Both reasons make it
2227 unsuitable for reading memory. */
2228 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2230 /* Start by reading up to 4K at a time. The target will throttle
2231 this number down if necessary. */
2233 buf
= xmalloc (buf_alloc
);
2237 ULONGEST xfered_len
;
2238 enum target_xfer_status status
;
2240 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2241 buf_pos
, buf_alloc
- buf_pos
- padding
,
2244 if (status
== TARGET_XFER_EOF
)
2246 /* Read all there was. */
2253 else if (status
!= TARGET_XFER_OK
)
2255 /* An error occurred. */
2257 return TARGET_XFER_E_IO
;
2260 buf_pos
+= xfered_len
;
2262 /* If the buffer is filling up, expand it. */
2263 if (buf_alloc
< buf_pos
* 2)
2266 buf
= xrealloc (buf
, buf_alloc
);
2273 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2274 the size of the transferred data. See the declaration in "target.h"
2275 function for more information about the return value. */
2278 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2279 const char *annex
, gdb_byte
**buf_p
)
2281 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2284 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2285 returned as a string, allocated using xmalloc. If an error occurs
2286 or the transfer is unsupported, NULL is returned. Empty objects
2287 are returned as allocated but empty strings. A warning is issued
2288 if the result contains any embedded NUL bytes. */
2291 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2296 LONGEST i
, transferred
;
2298 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2299 bufstr
= (char *) buffer
;
2301 if (transferred
< 0)
2304 if (transferred
== 0)
2305 return xstrdup ("");
2307 bufstr
[transferred
] = 0;
2309 /* Check for embedded NUL bytes; but allow trailing NULs. */
2310 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2313 warning (_("target object %d, annex %s, "
2314 "contained unexpected null characters"),
2315 (int) object
, annex
? annex
: "(none)");
2322 /* Memory transfer methods. */
2325 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2328 /* This method is used to read from an alternate, non-current
2329 target. This read must bypass the overlay support (as symbols
2330 don't match this target), and GDB's internal cache (wrong cache
2331 for this target). */
2332 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2334 memory_error (TARGET_XFER_E_IO
, addr
);
2338 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2339 int len
, enum bfd_endian byte_order
)
2341 gdb_byte buf
[sizeof (ULONGEST
)];
2343 gdb_assert (len
<= sizeof (buf
));
2344 get_target_memory (ops
, addr
, buf
, len
);
2345 return extract_unsigned_integer (buf
, len
, byte_order
);
2351 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2352 struct bp_target_info
*bp_tgt
)
2354 if (!may_insert_breakpoints
)
2356 warning (_("May not insert breakpoints"));
2360 return current_target
.to_insert_breakpoint (¤t_target
,
2367 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2368 struct bp_target_info
*bp_tgt
)
2370 /* This is kind of a weird case to handle, but the permission might
2371 have been changed after breakpoints were inserted - in which case
2372 we should just take the user literally and assume that any
2373 breakpoints should be left in place. */
2374 if (!may_insert_breakpoints
)
2376 warning (_("May not remove breakpoints"));
2380 return current_target
.to_remove_breakpoint (¤t_target
,
2385 target_info (char *args
, int from_tty
)
2387 struct target_ops
*t
;
2388 int has_all_mem
= 0;
2390 if (symfile_objfile
!= NULL
)
2391 printf_unfiltered (_("Symbols from \"%s\".\n"),
2392 objfile_name (symfile_objfile
));
2394 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2396 if (!(*t
->to_has_memory
) (t
))
2399 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2402 printf_unfiltered (_("\tWhile running this, "
2403 "GDB does not access memory from...\n"));
2404 printf_unfiltered ("%s:\n", t
->to_longname
);
2405 (t
->to_files_info
) (t
);
2406 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2410 /* This function is called before any new inferior is created, e.g.
2411 by running a program, attaching, or connecting to a target.
2412 It cleans up any state from previous invocations which might
2413 change between runs. This is a subset of what target_preopen
2414 resets (things which might change between targets). */
2417 target_pre_inferior (int from_tty
)
2419 /* Clear out solib state. Otherwise the solib state of the previous
2420 inferior might have survived and is entirely wrong for the new
2421 target. This has been observed on GNU/Linux using glibc 2.3. How
2433 Cannot access memory at address 0xdeadbeef
2436 /* In some OSs, the shared library list is the same/global/shared
2437 across inferiors. If code is shared between processes, so are
2438 memory regions and features. */
2439 if (!gdbarch_has_global_solist (target_gdbarch ()))
2441 no_shared_libraries (NULL
, from_tty
);
2443 invalidate_target_mem_regions ();
2445 target_clear_description ();
2448 agent_capability_invalidate ();
2451 /* Callback for iterate_over_inferiors. Gets rid of the given
2455 dispose_inferior (struct inferior
*inf
, void *args
)
2457 struct thread_info
*thread
;
2459 thread
= any_thread_of_process (inf
->pid
);
2462 switch_to_thread (thread
->ptid
);
2464 /* Core inferiors actually should be detached, not killed. */
2465 if (target_has_execution
)
2468 target_detach (NULL
, 0);
2474 /* This is to be called by the open routine before it does
2478 target_preopen (int from_tty
)
2482 if (have_inferiors ())
2485 || !have_live_inferiors ()
2486 || query (_("A program is being debugged already. Kill it? ")))
2487 iterate_over_inferiors (dispose_inferior
, NULL
);
2489 error (_("Program not killed."));
2492 /* Calling target_kill may remove the target from the stack. But if
2493 it doesn't (which seems like a win for UDI), remove it now. */
2494 /* Leave the exec target, though. The user may be switching from a
2495 live process to a core of the same program. */
2496 pop_all_targets_above (file_stratum
);
2498 target_pre_inferior (from_tty
);
2501 /* Detach a target after doing deferred register stores. */
2504 target_detach (const char *args
, int from_tty
)
2506 struct target_ops
* t
;
2508 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2509 /* Don't remove global breakpoints here. They're removed on
2510 disconnection from the target. */
2513 /* If we're in breakpoints-always-inserted mode, have to remove
2514 them before detaching. */
2515 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2517 prepare_for_detach ();
2519 current_target
.to_detach (¤t_target
, args
, from_tty
);
2521 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2526 target_disconnect (char *args
, int from_tty
)
2528 struct target_ops
*t
;
2530 /* If we're in breakpoints-always-inserted mode or if breakpoints
2531 are global across processes, we have to remove them before
2533 remove_breakpoints ();
2535 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2536 if (t
->to_disconnect
!= NULL
)
2539 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2541 t
->to_disconnect (t
, args
, from_tty
);
2549 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2551 struct target_ops
*t
;
2552 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2557 char *status_string
;
2558 char *options_string
;
2560 status_string
= target_waitstatus_to_string (status
);
2561 options_string
= target_options_to_string (options
);
2562 fprintf_unfiltered (gdb_stdlog
,
2563 "target_wait (%d, status, options={%s})"
2565 ptid_get_pid (ptid
), options_string
,
2566 ptid_get_pid (retval
), status_string
);
2567 xfree (status_string
);
2568 xfree (options_string
);
2575 target_pid_to_str (ptid_t ptid
)
2577 struct target_ops
*t
;
2579 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2581 if (t
->to_pid_to_str
!= NULL
)
2582 return (*t
->to_pid_to_str
) (t
, ptid
);
2585 return normal_pid_to_str (ptid
);
2589 target_thread_name (struct thread_info
*info
)
2591 return current_target
.to_thread_name (¤t_target
, info
);
2595 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2597 struct target_ops
*t
;
2599 target_dcache_invalidate ();
2601 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2603 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2604 ptid_get_pid (ptid
),
2605 step
? "step" : "continue",
2606 gdb_signal_to_name (signal
));
2608 registers_changed_ptid (ptid
);
2609 set_executing (ptid
, 1);
2610 set_running (ptid
, 1);
2611 clear_inline_frame_state (ptid
);
2615 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2617 struct target_ops
*t
;
2619 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2621 if (t
->to_pass_signals
!= NULL
)
2627 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2630 for (i
= 0; i
< numsigs
; i
++)
2631 if (pass_signals
[i
])
2632 fprintf_unfiltered (gdb_stdlog
, " %s",
2633 gdb_signal_to_name (i
));
2635 fprintf_unfiltered (gdb_stdlog
, " })\n");
2638 (*t
->to_pass_signals
) (t
, numsigs
, pass_signals
);
2645 target_program_signals (int numsigs
, unsigned char *program_signals
)
2647 struct target_ops
*t
;
2649 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2651 if (t
->to_program_signals
!= NULL
)
2657 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2660 for (i
= 0; i
< numsigs
; i
++)
2661 if (program_signals
[i
])
2662 fprintf_unfiltered (gdb_stdlog
, " %s",
2663 gdb_signal_to_name (i
));
2665 fprintf_unfiltered (gdb_stdlog
, " })\n");
2668 (*t
->to_program_signals
) (t
, numsigs
, program_signals
);
2674 /* Look through the list of possible targets for a target that can
2678 target_follow_fork (int follow_child
, int detach_fork
)
2680 struct target_ops
*t
;
2682 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2684 if (t
->to_follow_fork
!= NULL
)
2686 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2689 fprintf_unfiltered (gdb_stdlog
,
2690 "target_follow_fork (%d, %d) = %d\n",
2691 follow_child
, detach_fork
, retval
);
2696 /* Some target returned a fork event, but did not know how to follow it. */
2697 internal_error (__FILE__
, __LINE__
,
2698 _("could not find a target to follow fork"));
2702 target_mourn_inferior (void)
2704 struct target_ops
*t
;
2706 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2708 if (t
->to_mourn_inferior
!= NULL
)
2710 t
->to_mourn_inferior (t
);
2712 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2714 /* We no longer need to keep handles on any of the object files.
2715 Make sure to release them to avoid unnecessarily locking any
2716 of them while we're not actually debugging. */
2717 bfd_cache_close_all ();
2723 internal_error (__FILE__
, __LINE__
,
2724 _("could not find a target to follow mourn inferior"));
2727 /* Look for a target which can describe architectural features, starting
2728 from TARGET. If we find one, return its description. */
2730 const struct target_desc
*
2731 target_read_description (struct target_ops
*target
)
2733 struct target_ops
*t
;
2735 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2736 if (t
->to_read_description
!= NULL
)
2738 const struct target_desc
*tdesc
;
2740 tdesc
= t
->to_read_description (t
);
2748 /* The default implementation of to_search_memory.
2749 This implements a basic search of memory, reading target memory and
2750 performing the search here (as opposed to performing the search in on the
2751 target side with, for example, gdbserver). */
2754 simple_search_memory (struct target_ops
*ops
,
2755 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2756 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2757 CORE_ADDR
*found_addrp
)
2759 /* NOTE: also defined in find.c testcase. */
2760 #define SEARCH_CHUNK_SIZE 16000
2761 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2762 /* Buffer to hold memory contents for searching. */
2763 gdb_byte
*search_buf
;
2764 unsigned search_buf_size
;
2765 struct cleanup
*old_cleanups
;
2767 search_buf_size
= chunk_size
+ pattern_len
- 1;
2769 /* No point in trying to allocate a buffer larger than the search space. */
2770 if (search_space_len
< search_buf_size
)
2771 search_buf_size
= search_space_len
;
2773 search_buf
= malloc (search_buf_size
);
2774 if (search_buf
== NULL
)
2775 error (_("Unable to allocate memory to perform the search."));
2776 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2778 /* Prime the search buffer. */
2780 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2781 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2783 warning (_("Unable to access %s bytes of target "
2784 "memory at %s, halting search."),
2785 pulongest (search_buf_size
), hex_string (start_addr
));
2786 do_cleanups (old_cleanups
);
2790 /* Perform the search.
2792 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2793 When we've scanned N bytes we copy the trailing bytes to the start and
2794 read in another N bytes. */
2796 while (search_space_len
>= pattern_len
)
2798 gdb_byte
*found_ptr
;
2799 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2801 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2802 pattern
, pattern_len
);
2804 if (found_ptr
!= NULL
)
2806 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2808 *found_addrp
= found_addr
;
2809 do_cleanups (old_cleanups
);
2813 /* Not found in this chunk, skip to next chunk. */
2815 /* Don't let search_space_len wrap here, it's unsigned. */
2816 if (search_space_len
>= chunk_size
)
2817 search_space_len
-= chunk_size
;
2819 search_space_len
= 0;
2821 if (search_space_len
>= pattern_len
)
2823 unsigned keep_len
= search_buf_size
- chunk_size
;
2824 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2827 /* Copy the trailing part of the previous iteration to the front
2828 of the buffer for the next iteration. */
2829 gdb_assert (keep_len
== pattern_len
- 1);
2830 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2832 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2834 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2835 search_buf
+ keep_len
, read_addr
,
2836 nr_to_read
) != nr_to_read
)
2838 warning (_("Unable to access %s bytes of target "
2839 "memory at %s, halting search."),
2840 plongest (nr_to_read
),
2841 hex_string (read_addr
));
2842 do_cleanups (old_cleanups
);
2846 start_addr
+= chunk_size
;
2852 do_cleanups (old_cleanups
);
2856 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2857 sequence of bytes in PATTERN with length PATTERN_LEN.
2859 The result is 1 if found, 0 if not found, and -1 if there was an error
2860 requiring halting of the search (e.g. memory read error).
2861 If the pattern is found the address is recorded in FOUND_ADDRP. */
2864 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2865 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2866 CORE_ADDR
*found_addrp
)
2868 struct target_ops
*t
;
2871 /* We don't use INHERIT to set current_target.to_search_memory,
2872 so we have to scan the target stack and handle targetdebug
2876 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2877 hex_string (start_addr
));
2879 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2880 if (t
->to_search_memory
!= NULL
)
2885 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2886 pattern
, pattern_len
, found_addrp
);
2890 /* If a special version of to_search_memory isn't available, use the
2892 found
= simple_search_memory (current_target
.beneath
,
2893 start_addr
, search_space_len
,
2894 pattern
, pattern_len
, found_addrp
);
2898 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2903 /* Look through the currently pushed targets. If none of them will
2904 be able to restart the currently running process, issue an error
2908 target_require_runnable (void)
2910 struct target_ops
*t
;
2912 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2914 /* If this target knows how to create a new program, then
2915 assume we will still be able to after killing the current
2916 one. Either killing and mourning will not pop T, or else
2917 find_default_run_target will find it again. */
2918 if (t
->to_create_inferior
!= NULL
)
2921 /* Do not worry about thread_stratum targets that can not
2922 create inferiors. Assume they will be pushed again if
2923 necessary, and continue to the process_stratum. */
2924 if (t
->to_stratum
== thread_stratum
2925 || t
->to_stratum
== arch_stratum
)
2928 error (_("The \"%s\" target does not support \"run\". "
2929 "Try \"help target\" or \"continue\"."),
2933 /* This function is only called if the target is running. In that
2934 case there should have been a process_stratum target and it
2935 should either know how to create inferiors, or not... */
2936 internal_error (__FILE__
, __LINE__
, _("No targets found"));
2939 /* Look through the list of possible targets for a target that can
2940 execute a run or attach command without any other data. This is
2941 used to locate the default process stratum.
2943 If DO_MESG is not NULL, the result is always valid (error() is
2944 called for errors); else, return NULL on error. */
2946 static struct target_ops
*
2947 find_default_run_target (char *do_mesg
)
2949 struct target_ops
**t
;
2950 struct target_ops
*runable
= NULL
;
2955 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2958 if ((*t
)->to_can_run
&& target_can_run (*t
))
2968 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
2977 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
2979 struct target_ops
*t
;
2981 t
= find_default_run_target ("attach");
2982 (t
->to_attach
) (t
, args
, from_tty
);
2987 find_default_create_inferior (struct target_ops
*ops
,
2988 char *exec_file
, char *allargs
, char **env
,
2991 struct target_ops
*t
;
2993 t
= find_default_run_target ("run");
2994 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
2999 find_default_can_async_p (struct target_ops
*ignore
)
3001 struct target_ops
*t
;
3003 /* This may be called before the target is pushed on the stack;
3004 look for the default process stratum. If there's none, gdb isn't
3005 configured with a native debugger, and target remote isn't
3007 t
= find_default_run_target (NULL
);
3008 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
3009 return (t
->to_can_async_p
) (t
);
3014 find_default_is_async_p (struct target_ops
*ignore
)
3016 struct target_ops
*t
;
3018 /* This may be called before the target is pushed on the stack;
3019 look for the default process stratum. If there's none, gdb isn't
3020 configured with a native debugger, and target remote isn't
3022 t
= find_default_run_target (NULL
);
3023 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
3024 return (t
->to_is_async_p
) (t
);
3029 find_default_supports_non_stop (struct target_ops
*self
)
3031 struct target_ops
*t
;
3033 t
= find_default_run_target (NULL
);
3034 if (t
&& t
->to_supports_non_stop
)
3035 return (t
->to_supports_non_stop
) (t
);
3040 target_supports_non_stop (void)
3042 struct target_ops
*t
;
3044 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3045 if (t
->to_supports_non_stop
)
3046 return t
->to_supports_non_stop (t
);
3051 /* Implement the "info proc" command. */
3054 target_info_proc (char *args
, enum info_proc_what what
)
3056 struct target_ops
*t
;
3058 /* If we're already connected to something that can get us OS
3059 related data, use it. Otherwise, try using the native
3061 if (current_target
.to_stratum
>= process_stratum
)
3062 t
= current_target
.beneath
;
3064 t
= find_default_run_target (NULL
);
3066 for (; t
!= NULL
; t
= t
->beneath
)
3068 if (t
->to_info_proc
!= NULL
)
3070 t
->to_info_proc (t
, args
, what
);
3073 fprintf_unfiltered (gdb_stdlog
,
3074 "target_info_proc (\"%s\", %d)\n", args
, what
);
3084 find_default_supports_disable_randomization (struct target_ops
*self
)
3086 struct target_ops
*t
;
3088 t
= find_default_run_target (NULL
);
3089 if (t
&& t
->to_supports_disable_randomization
)
3090 return (t
->to_supports_disable_randomization
) (t
);
3095 target_supports_disable_randomization (void)
3097 struct target_ops
*t
;
3099 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3100 if (t
->to_supports_disable_randomization
)
3101 return t
->to_supports_disable_randomization (t
);
3107 target_get_osdata (const char *type
)
3109 struct target_ops
*t
;
3111 /* If we're already connected to something that can get us OS
3112 related data, use it. Otherwise, try using the native
3114 if (current_target
.to_stratum
>= process_stratum
)
3115 t
= current_target
.beneath
;
3117 t
= find_default_run_target ("get OS data");
3122 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3125 /* Determine the current address space of thread PTID. */
3127 struct address_space
*
3128 target_thread_address_space (ptid_t ptid
)
3130 struct address_space
*aspace
;
3131 struct inferior
*inf
;
3132 struct target_ops
*t
;
3134 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3136 if (t
->to_thread_address_space
!= NULL
)
3138 aspace
= t
->to_thread_address_space (t
, ptid
);
3139 gdb_assert (aspace
);
3142 fprintf_unfiltered (gdb_stdlog
,
3143 "target_thread_address_space (%s) = %d\n",
3144 target_pid_to_str (ptid
),
3145 address_space_num (aspace
));
3150 /* Fall-back to the "main" address space of the inferior. */
3151 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3153 if (inf
== NULL
|| inf
->aspace
== NULL
)
3154 internal_error (__FILE__
, __LINE__
,
3155 _("Can't determine the current "
3156 "address space of thread %s\n"),
3157 target_pid_to_str (ptid
));
3163 /* Target file operations. */
3165 static struct target_ops
*
3166 default_fileio_target (void)
3168 /* If we're already connected to something that can perform
3169 file I/O, use it. Otherwise, try using the native target. */
3170 if (current_target
.to_stratum
>= process_stratum
)
3171 return current_target
.beneath
;
3173 return find_default_run_target ("file I/O");
3176 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3177 target file descriptor, or -1 if an error occurs (and set
3180 target_fileio_open (const char *filename
, int flags
, int mode
,
3183 struct target_ops
*t
;
3185 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3187 if (t
->to_fileio_open
!= NULL
)
3189 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3192 fprintf_unfiltered (gdb_stdlog
,
3193 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3194 filename
, flags
, mode
,
3195 fd
, fd
!= -1 ? 0 : *target_errno
);
3200 *target_errno
= FILEIO_ENOSYS
;
3204 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3205 Return the number of bytes written, or -1 if an error occurs
3206 (and set *TARGET_ERRNO). */
3208 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3209 ULONGEST offset
, int *target_errno
)
3211 struct target_ops
*t
;
3213 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3215 if (t
->to_fileio_pwrite
!= NULL
)
3217 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3221 fprintf_unfiltered (gdb_stdlog
,
3222 "target_fileio_pwrite (%d,...,%d,%s) "
3224 fd
, len
, pulongest (offset
),
3225 ret
, ret
!= -1 ? 0 : *target_errno
);
3230 *target_errno
= FILEIO_ENOSYS
;
3234 /* Read up to LEN bytes FD on the target into READ_BUF.
3235 Return the number of bytes read, or -1 if an error occurs
3236 (and set *TARGET_ERRNO). */
3238 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3239 ULONGEST offset
, int *target_errno
)
3241 struct target_ops
*t
;
3243 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3245 if (t
->to_fileio_pread
!= NULL
)
3247 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3251 fprintf_unfiltered (gdb_stdlog
,
3252 "target_fileio_pread (%d,...,%d,%s) "
3254 fd
, len
, pulongest (offset
),
3255 ret
, ret
!= -1 ? 0 : *target_errno
);
3260 *target_errno
= FILEIO_ENOSYS
;
3264 /* Close FD on the target. Return 0, or -1 if an error occurs
3265 (and set *TARGET_ERRNO). */
3267 target_fileio_close (int fd
, int *target_errno
)
3269 struct target_ops
*t
;
3271 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3273 if (t
->to_fileio_close
!= NULL
)
3275 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3278 fprintf_unfiltered (gdb_stdlog
,
3279 "target_fileio_close (%d) = %d (%d)\n",
3280 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3285 *target_errno
= FILEIO_ENOSYS
;
3289 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3290 occurs (and set *TARGET_ERRNO). */
3292 target_fileio_unlink (const char *filename
, int *target_errno
)
3294 struct target_ops
*t
;
3296 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3298 if (t
->to_fileio_unlink
!= NULL
)
3300 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3303 fprintf_unfiltered (gdb_stdlog
,
3304 "target_fileio_unlink (%s) = %d (%d)\n",
3305 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3310 *target_errno
= FILEIO_ENOSYS
;
3314 /* Read value of symbolic link FILENAME on the target. Return a
3315 null-terminated string allocated via xmalloc, or NULL if an error
3316 occurs (and set *TARGET_ERRNO). */
3318 target_fileio_readlink (const char *filename
, int *target_errno
)
3320 struct target_ops
*t
;
3322 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3324 if (t
->to_fileio_readlink
!= NULL
)
3326 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3329 fprintf_unfiltered (gdb_stdlog
,
3330 "target_fileio_readlink (%s) = %s (%d)\n",
3331 filename
, ret
? ret
: "(nil)",
3332 ret
? 0 : *target_errno
);
3337 *target_errno
= FILEIO_ENOSYS
;
3342 target_fileio_close_cleanup (void *opaque
)
3344 int fd
= *(int *) opaque
;
3347 target_fileio_close (fd
, &target_errno
);
3350 /* Read target file FILENAME. Store the result in *BUF_P and
3351 return the size of the transferred data. PADDING additional bytes are
3352 available in *BUF_P. This is a helper function for
3353 target_fileio_read_alloc; see the declaration of that function for more
3357 target_fileio_read_alloc_1 (const char *filename
,
3358 gdb_byte
**buf_p
, int padding
)
3360 struct cleanup
*close_cleanup
;
3361 size_t buf_alloc
, buf_pos
;
3367 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3371 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3373 /* Start by reading up to 4K at a time. The target will throttle
3374 this number down if necessary. */
3376 buf
= xmalloc (buf_alloc
);
3380 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3381 buf_alloc
- buf_pos
- padding
, buf_pos
,
3385 /* An error occurred. */
3386 do_cleanups (close_cleanup
);
3392 /* Read all there was. */
3393 do_cleanups (close_cleanup
);
3403 /* If the buffer is filling up, expand it. */
3404 if (buf_alloc
< buf_pos
* 2)
3407 buf
= xrealloc (buf
, buf_alloc
);
3414 /* Read target file FILENAME. Store the result in *BUF_P and return
3415 the size of the transferred data. See the declaration in "target.h"
3416 function for more information about the return value. */
3419 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3421 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3424 /* Read target file FILENAME. The result is NUL-terminated and
3425 returned as a string, allocated using xmalloc. If an error occurs
3426 or the transfer is unsupported, NULL is returned. Empty objects
3427 are returned as allocated but empty strings. A warning is issued
3428 if the result contains any embedded NUL bytes. */
3431 target_fileio_read_stralloc (const char *filename
)
3435 LONGEST i
, transferred
;
3437 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3438 bufstr
= (char *) buffer
;
3440 if (transferred
< 0)
3443 if (transferred
== 0)
3444 return xstrdup ("");
3446 bufstr
[transferred
] = 0;
3448 /* Check for embedded NUL bytes; but allow trailing NULs. */
3449 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3452 warning (_("target file %s "
3453 "contained unexpected null characters"),
3463 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3464 CORE_ADDR addr
, int len
)
3466 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3470 default_watchpoint_addr_within_range (struct target_ops
*target
,
3472 CORE_ADDR start
, int length
)
3474 return addr
>= start
&& addr
< start
+ length
;
3477 static struct gdbarch
*
3478 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3480 return target_gdbarch ();
3496 * Find the next target down the stack from the specified target.
3500 find_target_beneath (struct target_ops
*t
)
3508 find_target_at (enum strata stratum
)
3510 struct target_ops
*t
;
3512 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3513 if (t
->to_stratum
== stratum
)
3520 /* The inferior process has died. Long live the inferior! */
3523 generic_mourn_inferior (void)
3527 ptid
= inferior_ptid
;
3528 inferior_ptid
= null_ptid
;
3530 /* Mark breakpoints uninserted in case something tries to delete a
3531 breakpoint while we delete the inferior's threads (which would
3532 fail, since the inferior is long gone). */
3533 mark_breakpoints_out ();
3535 if (!ptid_equal (ptid
, null_ptid
))
3537 int pid
= ptid_get_pid (ptid
);
3538 exit_inferior (pid
);
3541 /* Note this wipes step-resume breakpoints, so needs to be done
3542 after exit_inferior, which ends up referencing the step-resume
3543 breakpoints through clear_thread_inferior_resources. */
3544 breakpoint_init_inferior (inf_exited
);
3546 registers_changed ();
3548 reopen_exec_file ();
3549 reinit_frame_cache ();
3551 if (deprecated_detach_hook
)
3552 deprecated_detach_hook ();
3555 /* Convert a normal process ID to a string. Returns the string in a
3559 normal_pid_to_str (ptid_t ptid
)
3561 static char buf
[32];
3563 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3568 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3570 return normal_pid_to_str (ptid
);
3573 /* Error-catcher for target_find_memory_regions. */
3575 dummy_find_memory_regions (struct target_ops
*self
,
3576 find_memory_region_ftype ignore1
, void *ignore2
)
3578 error (_("Command not implemented for this target."));
3582 /* Error-catcher for target_make_corefile_notes. */
3584 dummy_make_corefile_notes (struct target_ops
*self
,
3585 bfd
*ignore1
, int *ignore2
)
3587 error (_("Command not implemented for this target."));
3591 /* Set up the handful of non-empty slots needed by the dummy target
3595 init_dummy_target (void)
3597 dummy_target
.to_shortname
= "None";
3598 dummy_target
.to_longname
= "None";
3599 dummy_target
.to_doc
= "";
3600 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3601 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3602 dummy_target
.to_supports_disable_randomization
3603 = find_default_supports_disable_randomization
;
3604 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3605 dummy_target
.to_stratum
= dummy_stratum
;
3606 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3607 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3608 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3609 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3610 dummy_target
.to_has_execution
3611 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3612 dummy_target
.to_magic
= OPS_MAGIC
;
3614 install_dummy_methods (&dummy_target
);
3618 debug_to_open (char *args
, int from_tty
)
3620 debug_target
.to_open (args
, from_tty
);
3622 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3626 target_close (struct target_ops
*targ
)
3628 gdb_assert (!target_is_pushed (targ
));
3630 if (targ
->to_xclose
!= NULL
)
3631 targ
->to_xclose (targ
);
3632 else if (targ
->to_close
!= NULL
)
3633 targ
->to_close (targ
);
3636 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3640 target_attach (char *args
, int from_tty
)
3642 current_target
.to_attach (¤t_target
, args
, from_tty
);
3644 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3649 target_thread_alive (ptid_t ptid
)
3651 struct target_ops
*t
;
3653 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3655 if (t
->to_thread_alive
!= NULL
)
3659 retval
= t
->to_thread_alive (t
, ptid
);
3661 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3662 ptid_get_pid (ptid
), retval
);
3672 target_find_new_threads (void)
3674 struct target_ops
*t
;
3676 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3678 if (t
->to_find_new_threads
!= NULL
)
3680 t
->to_find_new_threads (t
);
3682 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3690 target_stop (ptid_t ptid
)
3694 warning (_("May not interrupt or stop the target, ignoring attempt"));
3698 (*current_target
.to_stop
) (¤t_target
, ptid
);
3702 debug_to_post_attach (struct target_ops
*self
, int pid
)
3704 debug_target
.to_post_attach (&debug_target
, pid
);
3706 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3709 /* Concatenate ELEM to LIST, a comma separate list, and return the
3710 result. The LIST incoming argument is released. */
3713 str_comma_list_concat_elem (char *list
, const char *elem
)
3716 return xstrdup (elem
);
3718 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3721 /* Helper for target_options_to_string. If OPT is present in
3722 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3723 Returns the new resulting string. OPT is removed from
3727 do_option (int *target_options
, char *ret
,
3728 int opt
, char *opt_str
)
3730 if ((*target_options
& opt
) != 0)
3732 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3733 *target_options
&= ~opt
;
3740 target_options_to_string (int target_options
)
3744 #define DO_TARG_OPTION(OPT) \
3745 ret = do_option (&target_options, ret, OPT, #OPT)
3747 DO_TARG_OPTION (TARGET_WNOHANG
);
3749 if (target_options
!= 0)
3750 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3758 debug_print_register (const char * func
,
3759 struct regcache
*regcache
, int regno
)
3761 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3763 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3764 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3765 && gdbarch_register_name (gdbarch
, regno
) != NULL
3766 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3767 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3768 gdbarch_register_name (gdbarch
, regno
));
3770 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3771 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3773 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3774 int i
, size
= register_size (gdbarch
, regno
);
3775 gdb_byte buf
[MAX_REGISTER_SIZE
];
3777 regcache_raw_collect (regcache
, regno
, buf
);
3778 fprintf_unfiltered (gdb_stdlog
, " = ");
3779 for (i
= 0; i
< size
; i
++)
3781 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3783 if (size
<= sizeof (LONGEST
))
3785 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3787 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3788 core_addr_to_string_nz (val
), plongest (val
));
3791 fprintf_unfiltered (gdb_stdlog
, "\n");
3795 target_fetch_registers (struct regcache
*regcache
, int regno
)
3797 struct target_ops
*t
;
3799 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3801 if (t
->to_fetch_registers
!= NULL
)
3803 t
->to_fetch_registers (t
, regcache
, regno
);
3805 debug_print_register ("target_fetch_registers", regcache
, regno
);
3812 target_store_registers (struct regcache
*regcache
, int regno
)
3814 struct target_ops
*t
;
3816 if (!may_write_registers
)
3817 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3819 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3822 debug_print_register ("target_store_registers", regcache
, regno
);
3827 target_core_of_thread (ptid_t ptid
)
3829 struct target_ops
*t
;
3831 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3833 if (t
->to_core_of_thread
!= NULL
)
3835 int retval
= t
->to_core_of_thread (t
, ptid
);
3838 fprintf_unfiltered (gdb_stdlog
,
3839 "target_core_of_thread (%d) = %d\n",
3840 ptid_get_pid (ptid
), retval
);
3849 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3851 struct target_ops
*t
;
3853 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3855 if (t
->to_verify_memory
!= NULL
)
3857 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3860 fprintf_unfiltered (gdb_stdlog
,
3861 "target_verify_memory (%s, %s) = %d\n",
3862 paddress (target_gdbarch (), memaddr
),
3872 /* The documentation for this function is in its prototype declaration in
3876 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3878 struct target_ops
*t
;
3880 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3881 if (t
->to_insert_mask_watchpoint
!= NULL
)
3885 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
3888 fprintf_unfiltered (gdb_stdlog
, "\
3889 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3890 core_addr_to_string (addr
),
3891 core_addr_to_string (mask
), rw
, ret
);
3899 /* The documentation for this function is in its prototype declaration in
3903 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3905 struct target_ops
*t
;
3907 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3908 if (t
->to_remove_mask_watchpoint
!= NULL
)
3912 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
3915 fprintf_unfiltered (gdb_stdlog
, "\
3916 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3917 core_addr_to_string (addr
),
3918 core_addr_to_string (mask
), rw
, ret
);
3926 /* The documentation for this function is in its prototype declaration
3930 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
3932 struct target_ops
*t
;
3934 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3935 if (t
->to_masked_watch_num_registers
!= NULL
)
3936 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
3941 /* The documentation for this function is in its prototype declaration
3945 target_ranged_break_num_registers (void)
3947 struct target_ops
*t
;
3949 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3950 if (t
->to_ranged_break_num_registers
!= NULL
)
3951 return t
->to_ranged_break_num_registers (t
);
3958 struct btrace_target_info
*
3959 target_enable_btrace (ptid_t ptid
)
3961 struct target_ops
*t
;
3963 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3964 if (t
->to_enable_btrace
!= NULL
)
3965 return t
->to_enable_btrace (t
, ptid
);
3974 target_disable_btrace (struct btrace_target_info
*btinfo
)
3976 struct target_ops
*t
;
3978 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3979 if (t
->to_disable_btrace
!= NULL
)
3981 t
->to_disable_btrace (t
, btinfo
);
3991 target_teardown_btrace (struct btrace_target_info
*btinfo
)
3993 struct target_ops
*t
;
3995 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3996 if (t
->to_teardown_btrace
!= NULL
)
3998 t
->to_teardown_btrace (t
, btinfo
);
4008 target_read_btrace (VEC (btrace_block_s
) **btrace
,
4009 struct btrace_target_info
*btinfo
,
4010 enum btrace_read_type type
)
4012 struct target_ops
*t
;
4014 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4015 if (t
->to_read_btrace
!= NULL
)
4016 return t
->to_read_btrace (t
, btrace
, btinfo
, type
);
4019 return BTRACE_ERR_NOT_SUPPORTED
;
4025 target_stop_recording (void)
4027 struct target_ops
*t
;
4029 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4030 if (t
->to_stop_recording
!= NULL
)
4032 t
->to_stop_recording (t
);
4036 /* This is optional. */
4042 target_info_record (void)
4044 struct target_ops
*t
;
4046 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4047 if (t
->to_info_record
!= NULL
)
4049 t
->to_info_record (t
);
4059 target_save_record (const char *filename
)
4061 struct target_ops
*t
;
4063 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4064 if (t
->to_save_record
!= NULL
)
4066 t
->to_save_record (t
, filename
);
4076 target_supports_delete_record (void)
4078 struct target_ops
*t
;
4080 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4081 if (t
->to_delete_record
!= NULL
)
4090 target_delete_record (void)
4092 struct target_ops
*t
;
4094 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4095 if (t
->to_delete_record
!= NULL
)
4097 t
->to_delete_record (t
);
4107 target_record_is_replaying (void)
4109 struct target_ops
*t
;
4111 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4112 if (t
->to_record_is_replaying
!= NULL
)
4113 return t
->to_record_is_replaying (t
);
4121 target_goto_record_begin (void)
4123 struct target_ops
*t
;
4125 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4126 if (t
->to_goto_record_begin
!= NULL
)
4128 t
->to_goto_record_begin (t
);
4138 target_goto_record_end (void)
4140 struct target_ops
*t
;
4142 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4143 if (t
->to_goto_record_end
!= NULL
)
4145 t
->to_goto_record_end (t
);
4155 target_goto_record (ULONGEST insn
)
4157 struct target_ops
*t
;
4159 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4160 if (t
->to_goto_record
!= NULL
)
4162 t
->to_goto_record (t
, insn
);
4172 target_insn_history (int size
, int flags
)
4174 struct target_ops
*t
;
4176 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4177 if (t
->to_insn_history
!= NULL
)
4179 t
->to_insn_history (t
, size
, flags
);
4189 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4191 struct target_ops
*t
;
4193 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4194 if (t
->to_insn_history_from
!= NULL
)
4196 t
->to_insn_history_from (t
, from
, size
, flags
);
4206 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4208 struct target_ops
*t
;
4210 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4211 if (t
->to_insn_history_range
!= NULL
)
4213 t
->to_insn_history_range (t
, begin
, end
, flags
);
4223 target_call_history (int size
, int flags
)
4225 struct target_ops
*t
;
4227 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4228 if (t
->to_call_history
!= NULL
)
4230 t
->to_call_history (t
, size
, flags
);
4240 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4242 struct target_ops
*t
;
4244 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4245 if (t
->to_call_history_from
!= NULL
)
4247 t
->to_call_history_from (t
, begin
, size
, flags
);
4257 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4259 struct target_ops
*t
;
4261 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4262 if (t
->to_call_history_range
!= NULL
)
4264 t
->to_call_history_range (t
, begin
, end
, flags
);
4272 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
4274 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
4276 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4281 const struct frame_unwind
*
4282 target_get_unwinder (void)
4284 struct target_ops
*t
;
4286 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4287 if (t
->to_get_unwinder
!= NULL
)
4288 return t
->to_get_unwinder
;
4295 const struct frame_unwind
*
4296 target_get_tailcall_unwinder (void)
4298 struct target_ops
*t
;
4300 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4301 if (t
->to_get_tailcall_unwinder
!= NULL
)
4302 return t
->to_get_tailcall_unwinder
;
4310 forward_target_decr_pc_after_break (struct target_ops
*ops
,
4311 struct gdbarch
*gdbarch
)
4313 for (; ops
!= NULL
; ops
= ops
->beneath
)
4314 if (ops
->to_decr_pc_after_break
!= NULL
)
4315 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
4317 return gdbarch_decr_pc_after_break (gdbarch
);
4323 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
4325 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
4329 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4330 int write
, struct mem_attrib
*attrib
,
4331 struct target_ops
*target
)
4335 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4338 fprintf_unfiltered (gdb_stdlog
,
4339 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4340 paddress (target_gdbarch (), memaddr
), len
,
4341 write
? "write" : "read", retval
);
4347 fputs_unfiltered (", bytes =", gdb_stdlog
);
4348 for (i
= 0; i
< retval
; i
++)
4350 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4352 if (targetdebug
< 2 && i
> 0)
4354 fprintf_unfiltered (gdb_stdlog
, " ...");
4357 fprintf_unfiltered (gdb_stdlog
, "\n");
4360 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4364 fputc_unfiltered ('\n', gdb_stdlog
);
4370 debug_to_files_info (struct target_ops
*target
)
4372 debug_target
.to_files_info (target
);
4374 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4378 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4379 struct bp_target_info
*bp_tgt
)
4383 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4385 fprintf_unfiltered (gdb_stdlog
,
4386 "target_insert_breakpoint (%s, xxx) = %ld\n",
4387 core_addr_to_string (bp_tgt
->placed_address
),
4388 (unsigned long) retval
);
4393 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4394 struct bp_target_info
*bp_tgt
)
4398 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4400 fprintf_unfiltered (gdb_stdlog
,
4401 "target_remove_breakpoint (%s, xxx) = %ld\n",
4402 core_addr_to_string (bp_tgt
->placed_address
),
4403 (unsigned long) retval
);
4408 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4409 int type
, int cnt
, int from_tty
)
4413 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4414 type
, cnt
, from_tty
);
4416 fprintf_unfiltered (gdb_stdlog
,
4417 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4418 (unsigned long) type
,
4419 (unsigned long) cnt
,
4420 (unsigned long) from_tty
,
4421 (unsigned long) retval
);
4426 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4427 CORE_ADDR addr
, int len
)
4431 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4434 fprintf_unfiltered (gdb_stdlog
,
4435 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4436 core_addr_to_string (addr
), (unsigned long) len
,
4437 core_addr_to_string (retval
));
4442 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4443 CORE_ADDR addr
, int len
, int rw
,
4444 struct expression
*cond
)
4448 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4452 fprintf_unfiltered (gdb_stdlog
,
4453 "target_can_accel_watchpoint_condition "
4454 "(%s, %d, %d, %s) = %ld\n",
4455 core_addr_to_string (addr
), len
, rw
,
4456 host_address_to_string (cond
), (unsigned long) retval
);
4461 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4465 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4467 fprintf_unfiltered (gdb_stdlog
,
4468 "target_stopped_by_watchpoint () = %ld\n",
4469 (unsigned long) retval
);
4474 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4478 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4480 fprintf_unfiltered (gdb_stdlog
,
4481 "target_stopped_data_address ([%s]) = %ld\n",
4482 core_addr_to_string (*addr
),
4483 (unsigned long)retval
);
4488 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4490 CORE_ADDR start
, int length
)
4494 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4497 fprintf_filtered (gdb_stdlog
,
4498 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4499 core_addr_to_string (addr
), core_addr_to_string (start
),
4505 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4506 struct gdbarch
*gdbarch
,
4507 struct bp_target_info
*bp_tgt
)
4511 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4514 fprintf_unfiltered (gdb_stdlog
,
4515 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4516 core_addr_to_string (bp_tgt
->placed_address
),
4517 (unsigned long) retval
);
4522 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4523 struct gdbarch
*gdbarch
,
4524 struct bp_target_info
*bp_tgt
)
4528 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4531 fprintf_unfiltered (gdb_stdlog
,
4532 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4533 core_addr_to_string (bp_tgt
->placed_address
),
4534 (unsigned long) retval
);
4539 debug_to_insert_watchpoint (struct target_ops
*self
,
4540 CORE_ADDR addr
, int len
, int type
,
4541 struct expression
*cond
)
4545 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4546 addr
, len
, type
, cond
);
4548 fprintf_unfiltered (gdb_stdlog
,
4549 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4550 core_addr_to_string (addr
), len
, type
,
4551 host_address_to_string (cond
), (unsigned long) retval
);
4556 debug_to_remove_watchpoint (struct target_ops
*self
,
4557 CORE_ADDR addr
, int len
, int type
,
4558 struct expression
*cond
)
4562 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4563 addr
, len
, type
, cond
);
4565 fprintf_unfiltered (gdb_stdlog
,
4566 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4567 core_addr_to_string (addr
), len
, type
,
4568 host_address_to_string (cond
), (unsigned long) retval
);
4573 debug_to_terminal_init (struct target_ops
*self
)
4575 debug_target
.to_terminal_init (&debug_target
);
4577 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4581 debug_to_terminal_inferior (struct target_ops
*self
)
4583 debug_target
.to_terminal_inferior (&debug_target
);
4585 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4589 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4591 debug_target
.to_terminal_ours_for_output (&debug_target
);
4593 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4597 debug_to_terminal_ours (struct target_ops
*self
)
4599 debug_target
.to_terminal_ours (&debug_target
);
4601 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4605 debug_to_terminal_save_ours (struct target_ops
*self
)
4607 debug_target
.to_terminal_save_ours (&debug_target
);
4609 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4613 debug_to_terminal_info (struct target_ops
*self
,
4614 const char *arg
, int from_tty
)
4616 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4618 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4623 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4625 debug_target
.to_load (&debug_target
, args
, from_tty
);
4627 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4631 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4633 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4635 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4636 ptid_get_pid (ptid
));
4640 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4644 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4646 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4653 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4657 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4659 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4666 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4670 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4672 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4679 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4683 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4685 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4692 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4696 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4698 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4705 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4709 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4711 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4718 debug_to_has_exited (struct target_ops
*self
,
4719 int pid
, int wait_status
, int *exit_status
)
4723 has_exited
= debug_target
.to_has_exited (&debug_target
,
4724 pid
, wait_status
, exit_status
);
4726 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4727 pid
, wait_status
, *exit_status
, has_exited
);
4733 debug_to_can_run (struct target_ops
*self
)
4737 retval
= debug_target
.to_can_run (&debug_target
);
4739 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4744 static struct gdbarch
*
4745 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4747 struct gdbarch
*retval
;
4749 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4751 fprintf_unfiltered (gdb_stdlog
,
4752 "target_thread_architecture (%s) = %s [%s]\n",
4753 target_pid_to_str (ptid
),
4754 host_address_to_string (retval
),
4755 gdbarch_bfd_arch_info (retval
)->printable_name
);
4760 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4762 debug_target
.to_stop (&debug_target
, ptid
);
4764 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4765 target_pid_to_str (ptid
));
4769 debug_to_rcmd (struct target_ops
*self
, char *command
,
4770 struct ui_file
*outbuf
)
4772 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4773 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4777 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4781 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4783 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4790 setup_target_debug (void)
4792 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4794 current_target
.to_open
= debug_to_open
;
4795 current_target
.to_post_attach
= debug_to_post_attach
;
4796 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4797 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4798 current_target
.to_files_info
= debug_to_files_info
;
4799 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4800 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4801 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4802 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4803 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4804 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4805 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4806 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4807 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4808 current_target
.to_watchpoint_addr_within_range
4809 = debug_to_watchpoint_addr_within_range
;
4810 current_target
.to_region_ok_for_hw_watchpoint
4811 = debug_to_region_ok_for_hw_watchpoint
;
4812 current_target
.to_can_accel_watchpoint_condition
4813 = debug_to_can_accel_watchpoint_condition
;
4814 current_target
.to_terminal_init
= debug_to_terminal_init
;
4815 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4816 current_target
.to_terminal_ours_for_output
4817 = debug_to_terminal_ours_for_output
;
4818 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4819 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4820 current_target
.to_terminal_info
= debug_to_terminal_info
;
4821 current_target
.to_load
= debug_to_load
;
4822 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4823 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4824 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4825 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4826 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4827 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4828 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4829 current_target
.to_has_exited
= debug_to_has_exited
;
4830 current_target
.to_can_run
= debug_to_can_run
;
4831 current_target
.to_stop
= debug_to_stop
;
4832 current_target
.to_rcmd
= debug_to_rcmd
;
4833 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4834 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4838 static char targ_desc
[] =
4839 "Names of targets and files being debugged.\nShows the entire \
4840 stack of targets currently in use (including the exec-file,\n\
4841 core-file, and process, if any), as well as the symbol file name.";
4844 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4846 error (_("\"monitor\" command not supported by this target."));
4850 do_monitor_command (char *cmd
,
4853 target_rcmd (cmd
, gdb_stdtarg
);
4856 /* Print the name of each layers of our target stack. */
4859 maintenance_print_target_stack (char *cmd
, int from_tty
)
4861 struct target_ops
*t
;
4863 printf_filtered (_("The current target stack is:\n"));
4865 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4867 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4871 /* Controls if async mode is permitted. */
4872 int target_async_permitted
= 0;
4874 /* The set command writes to this variable. If the inferior is
4875 executing, target_async_permitted is *not* updated. */
4876 static int target_async_permitted_1
= 0;
4879 set_target_async_command (char *args
, int from_tty
,
4880 struct cmd_list_element
*c
)
4882 if (have_live_inferiors ())
4884 target_async_permitted_1
= target_async_permitted
;
4885 error (_("Cannot change this setting while the inferior is running."));
4888 target_async_permitted
= target_async_permitted_1
;
4892 show_target_async_command (struct ui_file
*file
, int from_tty
,
4893 struct cmd_list_element
*c
,
4896 fprintf_filtered (file
,
4897 _("Controlling the inferior in "
4898 "asynchronous mode is %s.\n"), value
);
4901 /* Temporary copies of permission settings. */
4903 static int may_write_registers_1
= 1;
4904 static int may_write_memory_1
= 1;
4905 static int may_insert_breakpoints_1
= 1;
4906 static int may_insert_tracepoints_1
= 1;
4907 static int may_insert_fast_tracepoints_1
= 1;
4908 static int may_stop_1
= 1;
4910 /* Make the user-set values match the real values again. */
4913 update_target_permissions (void)
4915 may_write_registers_1
= may_write_registers
;
4916 may_write_memory_1
= may_write_memory
;
4917 may_insert_breakpoints_1
= may_insert_breakpoints
;
4918 may_insert_tracepoints_1
= may_insert_tracepoints
;
4919 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4920 may_stop_1
= may_stop
;
4923 /* The one function handles (most of) the permission flags in the same
4927 set_target_permissions (char *args
, int from_tty
,
4928 struct cmd_list_element
*c
)
4930 if (target_has_execution
)
4932 update_target_permissions ();
4933 error (_("Cannot change this setting while the inferior is running."));
4936 /* Make the real values match the user-changed values. */
4937 may_write_registers
= may_write_registers_1
;
4938 may_insert_breakpoints
= may_insert_breakpoints_1
;
4939 may_insert_tracepoints
= may_insert_tracepoints_1
;
4940 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4941 may_stop
= may_stop_1
;
4942 update_observer_mode ();
4945 /* Set memory write permission independently of observer mode. */
4948 set_write_memory_permission (char *args
, int from_tty
,
4949 struct cmd_list_element
*c
)
4951 /* Make the real values match the user-changed values. */
4952 may_write_memory
= may_write_memory_1
;
4953 update_observer_mode ();
4958 initialize_targets (void)
4960 init_dummy_target ();
4961 push_target (&dummy_target
);
4963 add_info ("target", target_info
, targ_desc
);
4964 add_info ("files", target_info
, targ_desc
);
4966 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
4967 Set target debugging."), _("\
4968 Show target debugging."), _("\
4969 When non-zero, target debugging is enabled. Higher numbers are more\n\
4970 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4974 &setdebuglist
, &showdebuglist
);
4976 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
4977 &trust_readonly
, _("\
4978 Set mode for reading from readonly sections."), _("\
4979 Show mode for reading from readonly sections."), _("\
4980 When this mode is on, memory reads from readonly sections (such as .text)\n\
4981 will be read from the object file instead of from the target. This will\n\
4982 result in significant performance improvement for remote targets."),
4984 show_trust_readonly
,
4985 &setlist
, &showlist
);
4987 add_com ("monitor", class_obscure
, do_monitor_command
,
4988 _("Send a command to the remote monitor (remote targets only)."));
4990 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
4991 _("Print the name of each layer of the internal target stack."),
4992 &maintenanceprintlist
);
4994 add_setshow_boolean_cmd ("target-async", no_class
,
4995 &target_async_permitted_1
, _("\
4996 Set whether gdb controls the inferior in asynchronous mode."), _("\
4997 Show whether gdb controls the inferior in asynchronous mode."), _("\
4998 Tells gdb whether to control the inferior in asynchronous mode."),
4999 set_target_async_command
,
5000 show_target_async_command
,
5004 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5005 &may_write_registers_1
, _("\
5006 Set permission to write into registers."), _("\
5007 Show permission to write into registers."), _("\
5008 When this permission is on, GDB may write into the target's registers.\n\
5009 Otherwise, any sort of write attempt will result in an error."),
5010 set_target_permissions
, NULL
,
5011 &setlist
, &showlist
);
5013 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5014 &may_write_memory_1
, _("\
5015 Set permission to write into target memory."), _("\
5016 Show permission to write into target memory."), _("\
5017 When this permission is on, GDB may write into the target's memory.\n\
5018 Otherwise, any sort of write attempt will result in an error."),
5019 set_write_memory_permission
, NULL
,
5020 &setlist
, &showlist
);
5022 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5023 &may_insert_breakpoints_1
, _("\
5024 Set permission to insert breakpoints in the target."), _("\
5025 Show permission to insert breakpoints in the target."), _("\
5026 When this permission is on, GDB may insert breakpoints in the program.\n\
5027 Otherwise, any sort of insertion attempt will result in an error."),
5028 set_target_permissions
, NULL
,
5029 &setlist
, &showlist
);
5031 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5032 &may_insert_tracepoints_1
, _("\
5033 Set permission to insert tracepoints in the target."), _("\
5034 Show permission to insert tracepoints in the target."), _("\
5035 When this permission is on, GDB may insert tracepoints in the program.\n\
5036 Otherwise, any sort of insertion attempt will result in an error."),
5037 set_target_permissions
, NULL
,
5038 &setlist
, &showlist
);
5040 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5041 &may_insert_fast_tracepoints_1
, _("\
5042 Set permission to insert fast tracepoints in the target."), _("\
5043 Show permission to insert fast tracepoints in the target."), _("\
5044 When this permission is on, GDB may insert fast tracepoints.\n\
5045 Otherwise, any sort of insertion attempt will result in an error."),
5046 set_target_permissions
, NULL
,
5047 &setlist
, &showlist
);
5049 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5051 Set permission to interrupt or signal the target."), _("\
5052 Show permission to interrupt or signal the target."), _("\
5053 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5054 Otherwise, any attempt to interrupt or stop will be ignored."),
5055 set_target_permissions
, NULL
,
5056 &setlist
, &showlist
);