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 INHERIT (to_set_disconnected_tracing
, t
);
708 INHERIT (to_set_circular_trace_buffer
, t
);
709 INHERIT (to_set_trace_buffer_size
, t
);
710 INHERIT (to_set_trace_notes
, t
);
711 INHERIT (to_get_tib_address
, t
);
712 INHERIT (to_set_permissions
, t
);
713 INHERIT (to_static_tracepoint_marker_at
, t
);
714 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
715 INHERIT (to_traceframe_info
, t
);
716 INHERIT (to_use_agent
, t
);
717 INHERIT (to_can_use_agent
, t
);
718 INHERIT (to_augmented_libraries_svr4_read
, t
);
719 INHERIT (to_magic
, t
);
720 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
721 INHERIT (to_can_run_breakpoint_commands
, t
);
722 /* Do not inherit to_memory_map. */
723 /* Do not inherit to_flash_erase. */
724 /* Do not inherit to_flash_done. */
728 /* Clean up a target struct so it no longer has any zero pointers in
729 it. Some entries are defaulted to a method that print an error,
730 others are hard-wired to a standard recursive default. */
732 #define de_fault(field, value) \
733 if (!current_target.field) \
734 current_target.field = value
737 (void (*) (char *, int))
740 (void (*) (struct target_ops
*))
742 de_fault (deprecated_xfer_memory
,
743 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
744 struct mem_attrib
*, struct target_ops
*))
746 de_fault (to_can_run
,
747 (int (*) (struct target_ops
*))
750 (void (*) (struct target_ops
*, ptid_t
))
752 current_target
.to_read_description
= NULL
;
753 de_fault (to_set_disconnected_tracing
,
754 (void (*) (struct target_ops
*, int))
756 de_fault (to_set_circular_trace_buffer
,
757 (void (*) (struct target_ops
*, int))
759 de_fault (to_set_trace_buffer_size
,
760 (void (*) (struct target_ops
*, LONGEST
))
762 de_fault (to_set_trace_notes
,
763 (int (*) (struct target_ops
*,
764 const char *, const char *, const char *))
766 de_fault (to_get_tib_address
,
767 (int (*) (struct target_ops
*, ptid_t
, CORE_ADDR
*))
769 de_fault (to_set_permissions
,
770 (void (*) (struct target_ops
*))
772 de_fault (to_static_tracepoint_marker_at
,
773 (int (*) (struct target_ops
*,
774 CORE_ADDR
, struct static_tracepoint_marker
*))
776 de_fault (to_static_tracepoint_markers_by_strid
,
777 (VEC(static_tracepoint_marker_p
) * (*) (struct target_ops
*,
780 de_fault (to_traceframe_info
,
781 (struct traceframe_info
* (*) (struct target_ops
*))
783 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
784 (int (*) (struct target_ops
*))
786 de_fault (to_can_run_breakpoint_commands
,
787 (int (*) (struct target_ops
*))
789 de_fault (to_use_agent
,
790 (int (*) (struct target_ops
*, int))
792 de_fault (to_can_use_agent
,
793 (int (*) (struct target_ops
*))
795 de_fault (to_augmented_libraries_svr4_read
,
796 (int (*) (struct target_ops
*))
801 /* Finally, position the target-stack beneath the squashed
802 "current_target". That way code looking for a non-inherited
803 target method can quickly and simply find it. */
804 current_target
.beneath
= target_stack
;
807 setup_target_debug ();
810 /* Push a new target type into the stack of the existing target accessors,
811 possibly superseding some of the existing accessors.
813 Rather than allow an empty stack, we always have the dummy target at
814 the bottom stratum, so we can call the function vectors without
818 push_target (struct target_ops
*t
)
820 struct target_ops
**cur
;
822 /* Check magic number. If wrong, it probably means someone changed
823 the struct definition, but not all the places that initialize one. */
824 if (t
->to_magic
!= OPS_MAGIC
)
826 fprintf_unfiltered (gdb_stderr
,
827 "Magic number of %s target struct wrong\n",
829 internal_error (__FILE__
, __LINE__
,
830 _("failed internal consistency check"));
833 /* Find the proper stratum to install this target in. */
834 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
836 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
840 /* If there's already targets at this stratum, remove them. */
841 /* FIXME: cagney/2003-10-15: I think this should be popping all
842 targets to CUR, and not just those at this stratum level. */
843 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
845 /* There's already something at this stratum level. Close it,
846 and un-hook it from the stack. */
847 struct target_ops
*tmp
= (*cur
);
849 (*cur
) = (*cur
)->beneath
;
854 /* We have removed all targets in our stratum, now add the new one. */
858 update_current_target ();
861 /* Remove a target_ops vector from the stack, wherever it may be.
862 Return how many times it was removed (0 or 1). */
865 unpush_target (struct target_ops
*t
)
867 struct target_ops
**cur
;
868 struct target_ops
*tmp
;
870 if (t
->to_stratum
== dummy_stratum
)
871 internal_error (__FILE__
, __LINE__
,
872 _("Attempt to unpush the dummy target"));
874 /* Look for the specified target. Note that we assume that a target
875 can only occur once in the target stack. */
877 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
883 /* If we don't find target_ops, quit. Only open targets should be
888 /* Unchain the target. */
890 (*cur
) = (*cur
)->beneath
;
893 update_current_target ();
895 /* Finally close the target. Note we do this after unchaining, so
896 any target method calls from within the target_close
897 implementation don't end up in T anymore. */
904 pop_all_targets_above (enum strata above_stratum
)
906 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
908 if (!unpush_target (target_stack
))
910 fprintf_unfiltered (gdb_stderr
,
911 "pop_all_targets couldn't find target %s\n",
912 target_stack
->to_shortname
);
913 internal_error (__FILE__
, __LINE__
,
914 _("failed internal consistency check"));
921 pop_all_targets (void)
923 pop_all_targets_above (dummy_stratum
);
926 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
929 target_is_pushed (struct target_ops
*t
)
931 struct target_ops
**cur
;
933 /* Check magic number. If wrong, it probably means someone changed
934 the struct definition, but not all the places that initialize one. */
935 if (t
->to_magic
!= OPS_MAGIC
)
937 fprintf_unfiltered (gdb_stderr
,
938 "Magic number of %s target struct wrong\n",
940 internal_error (__FILE__
, __LINE__
,
941 _("failed internal consistency check"));
944 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
951 /* Using the objfile specified in OBJFILE, find the address for the
952 current thread's thread-local storage with offset OFFSET. */
954 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
956 volatile CORE_ADDR addr
= 0;
957 struct target_ops
*target
;
959 for (target
= current_target
.beneath
;
961 target
= target
->beneath
)
963 if (target
->to_get_thread_local_address
!= NULL
)
968 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
970 ptid_t ptid
= inferior_ptid
;
971 volatile struct gdb_exception ex
;
973 TRY_CATCH (ex
, RETURN_MASK_ALL
)
977 /* Fetch the load module address for this objfile. */
978 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
980 /* If it's 0, throw the appropriate exception. */
982 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
983 _("TLS load module not found"));
985 addr
= target
->to_get_thread_local_address (target
, ptid
,
988 /* If an error occurred, print TLS related messages here. Otherwise,
989 throw the error to some higher catcher. */
992 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
996 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
997 error (_("Cannot find thread-local variables "
998 "in this thread library."));
1000 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1001 if (objfile_is_library
)
1002 error (_("Cannot find shared library `%s' in dynamic"
1003 " linker's load module list"), objfile_name (objfile
));
1005 error (_("Cannot find executable file `%s' in dynamic"
1006 " linker's load module list"), objfile_name (objfile
));
1008 case TLS_NOT_ALLOCATED_YET_ERROR
:
1009 if (objfile_is_library
)
1010 error (_("The inferior has not yet allocated storage for"
1011 " thread-local variables in\n"
1012 "the shared library `%s'\n"
1014 objfile_name (objfile
), target_pid_to_str (ptid
));
1016 error (_("The inferior has not yet allocated storage for"
1017 " thread-local variables in\n"
1018 "the executable `%s'\n"
1020 objfile_name (objfile
), target_pid_to_str (ptid
));
1022 case TLS_GENERIC_ERROR
:
1023 if (objfile_is_library
)
1024 error (_("Cannot find thread-local storage for %s, "
1025 "shared library %s:\n%s"),
1026 target_pid_to_str (ptid
),
1027 objfile_name (objfile
), ex
.message
);
1029 error (_("Cannot find thread-local storage for %s, "
1030 "executable file %s:\n%s"),
1031 target_pid_to_str (ptid
),
1032 objfile_name (objfile
), ex
.message
);
1035 throw_exception (ex
);
1040 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1041 TLS is an ABI-specific thing. But we don't do that yet. */
1043 error (_("Cannot find thread-local variables on this target"));
1049 target_xfer_status_to_string (enum target_xfer_status err
)
1051 #define CASE(X) case X: return #X
1054 CASE(TARGET_XFER_E_IO
);
1055 CASE(TARGET_XFER_E_UNAVAILABLE
);
1064 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1066 /* target_read_string -- read a null terminated string, up to LEN bytes,
1067 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1068 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1069 is responsible for freeing it. Return the number of bytes successfully
1073 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1075 int tlen
, offset
, i
;
1079 int buffer_allocated
;
1081 unsigned int nbytes_read
= 0;
1083 gdb_assert (string
);
1085 /* Small for testing. */
1086 buffer_allocated
= 4;
1087 buffer
= xmalloc (buffer_allocated
);
1092 tlen
= MIN (len
, 4 - (memaddr
& 3));
1093 offset
= memaddr
& 3;
1095 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1098 /* The transfer request might have crossed the boundary to an
1099 unallocated region of memory. Retry the transfer, requesting
1103 errcode
= target_read_memory (memaddr
, buf
, 1);
1108 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1112 bytes
= bufptr
- buffer
;
1113 buffer_allocated
*= 2;
1114 buffer
= xrealloc (buffer
, buffer_allocated
);
1115 bufptr
= buffer
+ bytes
;
1118 for (i
= 0; i
< tlen
; i
++)
1120 *bufptr
++ = buf
[i
+ offset
];
1121 if (buf
[i
+ offset
] == '\000')
1123 nbytes_read
+= i
+ 1;
1130 nbytes_read
+= tlen
;
1139 struct target_section_table
*
1140 target_get_section_table (struct target_ops
*target
)
1142 struct target_ops
*t
;
1145 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1147 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1148 if (t
->to_get_section_table
!= NULL
)
1149 return (*t
->to_get_section_table
) (t
);
1154 /* Find a section containing ADDR. */
1156 struct target_section
*
1157 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1159 struct target_section_table
*table
= target_get_section_table (target
);
1160 struct target_section
*secp
;
1165 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1167 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1173 /* Read memory from the live target, even if currently inspecting a
1174 traceframe. The return is the same as that of target_read. */
1176 static enum target_xfer_status
1177 target_read_live_memory (enum target_object object
,
1178 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1179 ULONGEST
*xfered_len
)
1181 enum target_xfer_status ret
;
1182 struct cleanup
*cleanup
;
1184 /* Switch momentarily out of tfind mode so to access live memory.
1185 Note that this must not clear global state, such as the frame
1186 cache, which must still remain valid for the previous traceframe.
1187 We may be _building_ the frame cache at this point. */
1188 cleanup
= make_cleanup_restore_traceframe_number ();
1189 set_traceframe_number (-1);
1191 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1192 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1194 do_cleanups (cleanup
);
1198 /* Using the set of read-only target sections of OPS, read live
1199 read-only memory. Note that the actual reads start from the
1200 top-most target again.
1202 For interface/parameters/return description see target.h,
1205 static enum target_xfer_status
1206 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1207 enum target_object object
,
1208 gdb_byte
*readbuf
, ULONGEST memaddr
,
1209 ULONGEST len
, ULONGEST
*xfered_len
)
1211 struct target_section
*secp
;
1212 struct target_section_table
*table
;
1214 secp
= target_section_by_addr (ops
, memaddr
);
1216 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1217 secp
->the_bfd_section
)
1220 struct target_section
*p
;
1221 ULONGEST memend
= memaddr
+ len
;
1223 table
= target_get_section_table (ops
);
1225 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1227 if (memaddr
>= p
->addr
)
1229 if (memend
<= p
->endaddr
)
1231 /* Entire transfer is within this section. */
1232 return target_read_live_memory (object
, memaddr
,
1233 readbuf
, len
, xfered_len
);
1235 else if (memaddr
>= p
->endaddr
)
1237 /* This section ends before the transfer starts. */
1242 /* This section overlaps the transfer. Just do half. */
1243 len
= p
->endaddr
- memaddr
;
1244 return target_read_live_memory (object
, memaddr
,
1245 readbuf
, len
, xfered_len
);
1251 return TARGET_XFER_EOF
;
1254 /* Read memory from more than one valid target. A core file, for
1255 instance, could have some of memory but delegate other bits to
1256 the target below it. So, we must manually try all targets. */
1258 static enum target_xfer_status
1259 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1260 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1261 ULONGEST
*xfered_len
)
1263 enum target_xfer_status res
;
1267 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1268 readbuf
, writebuf
, memaddr
, len
,
1270 if (res
== TARGET_XFER_OK
)
1273 /* Stop if the target reports that the memory is not available. */
1274 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1277 /* We want to continue past core files to executables, but not
1278 past a running target's memory. */
1279 if (ops
->to_has_all_memory (ops
))
1284 while (ops
!= NULL
);
1289 /* Perform a partial memory transfer.
1290 For docs see target.h, to_xfer_partial. */
1292 static enum target_xfer_status
1293 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1294 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1295 ULONGEST len
, ULONGEST
*xfered_len
)
1297 enum target_xfer_status res
;
1299 struct mem_region
*region
;
1300 struct inferior
*inf
;
1302 /* For accesses to unmapped overlay sections, read directly from
1303 files. Must do this first, as MEMADDR may need adjustment. */
1304 if (readbuf
!= NULL
&& overlay_debugging
)
1306 struct obj_section
*section
= find_pc_overlay (memaddr
);
1308 if (pc_in_unmapped_range (memaddr
, section
))
1310 struct target_section_table
*table
1311 = target_get_section_table (ops
);
1312 const char *section_name
= section
->the_bfd_section
->name
;
1314 memaddr
= overlay_mapped_address (memaddr
, section
);
1315 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1316 memaddr
, len
, xfered_len
,
1318 table
->sections_end
,
1323 /* Try the executable files, if "trust-readonly-sections" is set. */
1324 if (readbuf
!= NULL
&& trust_readonly
)
1326 struct target_section
*secp
;
1327 struct target_section_table
*table
;
1329 secp
= target_section_by_addr (ops
, memaddr
);
1331 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1332 secp
->the_bfd_section
)
1335 table
= target_get_section_table (ops
);
1336 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1337 memaddr
, len
, xfered_len
,
1339 table
->sections_end
,
1344 /* If reading unavailable memory in the context of traceframes, and
1345 this address falls within a read-only section, fallback to
1346 reading from live memory. */
1347 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1349 VEC(mem_range_s
) *available
;
1351 /* If we fail to get the set of available memory, then the
1352 target does not support querying traceframe info, and so we
1353 attempt reading from the traceframe anyway (assuming the
1354 target implements the old QTro packet then). */
1355 if (traceframe_available_memory (&available
, memaddr
, len
))
1357 struct cleanup
*old_chain
;
1359 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1361 if (VEC_empty (mem_range_s
, available
)
1362 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1364 /* Don't read into the traceframe's available
1366 if (!VEC_empty (mem_range_s
, available
))
1368 LONGEST oldlen
= len
;
1370 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1371 gdb_assert (len
<= oldlen
);
1374 do_cleanups (old_chain
);
1376 /* This goes through the topmost target again. */
1377 res
= memory_xfer_live_readonly_partial (ops
, object
,
1380 if (res
== TARGET_XFER_OK
)
1381 return TARGET_XFER_OK
;
1384 /* No use trying further, we know some memory starting
1385 at MEMADDR isn't available. */
1387 return TARGET_XFER_E_UNAVAILABLE
;
1391 /* Don't try to read more than how much is available, in
1392 case the target implements the deprecated QTro packet to
1393 cater for older GDBs (the target's knowledge of read-only
1394 sections may be outdated by now). */
1395 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1397 do_cleanups (old_chain
);
1401 /* Try GDB's internal data cache. */
1402 region
= lookup_mem_region (memaddr
);
1403 /* region->hi == 0 means there's no upper bound. */
1404 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1407 reg_len
= region
->hi
- memaddr
;
1409 switch (region
->attrib
.mode
)
1412 if (writebuf
!= NULL
)
1413 return TARGET_XFER_E_IO
;
1417 if (readbuf
!= NULL
)
1418 return TARGET_XFER_E_IO
;
1422 /* We only support writing to flash during "load" for now. */
1423 if (writebuf
!= NULL
)
1424 error (_("Writing to flash memory forbidden in this context"));
1428 return TARGET_XFER_E_IO
;
1431 if (!ptid_equal (inferior_ptid
, null_ptid
))
1432 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1437 /* The dcache reads whole cache lines; that doesn't play well
1438 with reading from a trace buffer, because reading outside of
1439 the collected memory range fails. */
1440 && get_traceframe_number () == -1
1441 && (region
->attrib
.cache
1442 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1443 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1445 DCACHE
*dcache
= target_dcache_get_or_init ();
1448 if (readbuf
!= NULL
)
1449 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1451 /* FIXME drow/2006-08-09: If we're going to preserve const
1452 correctness dcache_xfer_memory should take readbuf and
1454 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1457 return TARGET_XFER_E_IO
;
1460 *xfered_len
= (ULONGEST
) l
;
1461 return TARGET_XFER_OK
;
1465 /* If none of those methods found the memory we wanted, fall back
1466 to a target partial transfer. Normally a single call to
1467 to_xfer_partial is enough; if it doesn't recognize an object
1468 it will call the to_xfer_partial of the next target down.
1469 But for memory this won't do. Memory is the only target
1470 object which can be read from more than one valid target.
1471 A core file, for instance, could have some of memory but
1472 delegate other bits to the target below it. So, we must
1473 manually try all targets. */
1475 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1478 /* Make sure the cache gets updated no matter what - if we are writing
1479 to the stack. Even if this write is not tagged as such, we still need
1480 to update the cache. */
1482 if (res
== TARGET_XFER_OK
1485 && target_dcache_init_p ()
1486 && !region
->attrib
.cache
1487 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1488 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1490 DCACHE
*dcache
= target_dcache_get ();
1492 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1495 /* If we still haven't got anything, return the last error. We
1500 /* Perform a partial memory transfer. For docs see target.h,
1503 static enum target_xfer_status
1504 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1505 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1506 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1508 enum target_xfer_status res
;
1510 /* Zero length requests are ok and require no work. */
1512 return TARGET_XFER_EOF
;
1514 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1515 breakpoint insns, thus hiding out from higher layers whether
1516 there are software breakpoints inserted in the code stream. */
1517 if (readbuf
!= NULL
)
1519 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1522 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1523 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1528 struct cleanup
*old_chain
;
1530 /* A large write request is likely to be partially satisfied
1531 by memory_xfer_partial_1. We will continually malloc
1532 and free a copy of the entire write request for breakpoint
1533 shadow handling even though we only end up writing a small
1534 subset of it. Cap writes to 4KB to mitigate this. */
1535 len
= min (4096, len
);
1537 buf
= xmalloc (len
);
1538 old_chain
= make_cleanup (xfree
, buf
);
1539 memcpy (buf
, writebuf
, len
);
1541 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1542 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1545 do_cleanups (old_chain
);
1552 restore_show_memory_breakpoints (void *arg
)
1554 show_memory_breakpoints
= (uintptr_t) arg
;
1558 make_show_memory_breakpoints_cleanup (int show
)
1560 int current
= show_memory_breakpoints
;
1562 show_memory_breakpoints
= show
;
1563 return make_cleanup (restore_show_memory_breakpoints
,
1564 (void *) (uintptr_t) current
);
1567 /* For docs see target.h, to_xfer_partial. */
1569 enum target_xfer_status
1570 target_xfer_partial (struct target_ops
*ops
,
1571 enum target_object object
, const char *annex
,
1572 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1573 ULONGEST offset
, ULONGEST len
,
1574 ULONGEST
*xfered_len
)
1576 enum target_xfer_status retval
;
1578 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1580 /* Transfer is done when LEN is zero. */
1582 return TARGET_XFER_EOF
;
1584 if (writebuf
&& !may_write_memory
)
1585 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1586 core_addr_to_string_nz (offset
), plongest (len
));
1590 /* If this is a memory transfer, let the memory-specific code
1591 have a look at it instead. Memory transfers are more
1593 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1594 || object
== TARGET_OBJECT_CODE_MEMORY
)
1595 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1596 writebuf
, offset
, len
, xfered_len
);
1597 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1599 /* Request the normal memory object from other layers. */
1600 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1604 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1605 writebuf
, offset
, len
, xfered_len
);
1609 const unsigned char *myaddr
= NULL
;
1611 fprintf_unfiltered (gdb_stdlog
,
1612 "%s:target_xfer_partial "
1613 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1616 (annex
? annex
: "(null)"),
1617 host_address_to_string (readbuf
),
1618 host_address_to_string (writebuf
),
1619 core_addr_to_string_nz (offset
),
1620 pulongest (len
), retval
,
1621 pulongest (*xfered_len
));
1627 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1631 fputs_unfiltered (", bytes =", gdb_stdlog
);
1632 for (i
= 0; i
< *xfered_len
; i
++)
1634 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1636 if (targetdebug
< 2 && i
> 0)
1638 fprintf_unfiltered (gdb_stdlog
, " ...");
1641 fprintf_unfiltered (gdb_stdlog
, "\n");
1644 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1648 fputc_unfiltered ('\n', gdb_stdlog
);
1651 /* Check implementations of to_xfer_partial update *XFERED_LEN
1652 properly. Do assertion after printing debug messages, so that we
1653 can find more clues on assertion failure from debugging messages. */
1654 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1655 gdb_assert (*xfered_len
> 0);
1660 /* Read LEN bytes of target memory at address MEMADDR, placing the
1661 results in GDB's memory at MYADDR. Returns either 0 for success or
1662 TARGET_XFER_E_IO if any error occurs.
1664 If an error occurs, no guarantee is made about the contents of the data at
1665 MYADDR. In particular, the caller should not depend upon partial reads
1666 filling the buffer with good data. There is no way for the caller to know
1667 how much good data might have been transfered anyway. Callers that can
1668 deal with partial reads should call target_read (which will retry until
1669 it makes no progress, and then return how much was transferred). */
1672 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1674 /* Dispatch to the topmost target, not the flattened current_target.
1675 Memory accesses check target->to_has_(all_)memory, and the
1676 flattened target doesn't inherit those. */
1677 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1678 myaddr
, memaddr
, len
) == len
)
1681 return TARGET_XFER_E_IO
;
1684 /* Like target_read_memory, but specify explicitly that this is a read
1685 from the target's raw memory. That is, this read bypasses the
1686 dcache, breakpoint shadowing, etc. */
1689 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1691 /* See comment in target_read_memory about why the request starts at
1692 current_target.beneath. */
1693 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1694 myaddr
, memaddr
, len
) == len
)
1697 return TARGET_XFER_E_IO
;
1700 /* Like target_read_memory, but specify explicitly that this is a read from
1701 the target's stack. This may trigger different cache behavior. */
1704 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1706 /* See comment in target_read_memory about why the request starts at
1707 current_target.beneath. */
1708 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1709 myaddr
, memaddr
, len
) == len
)
1712 return TARGET_XFER_E_IO
;
1715 /* Like target_read_memory, but specify explicitly that this is a read from
1716 the target's code. This may trigger different cache behavior. */
1719 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1721 /* See comment in target_read_memory about why the request starts at
1722 current_target.beneath. */
1723 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1724 myaddr
, memaddr
, len
) == len
)
1727 return TARGET_XFER_E_IO
;
1730 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1731 Returns either 0 for success or TARGET_XFER_E_IO if any
1732 error occurs. If an error occurs, no guarantee is made about how
1733 much data got written. Callers that can deal with partial writes
1734 should call target_write. */
1737 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1739 /* See comment in target_read_memory about why the request starts at
1740 current_target.beneath. */
1741 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1742 myaddr
, memaddr
, len
) == len
)
1745 return TARGET_XFER_E_IO
;
1748 /* Write LEN bytes from MYADDR to target raw memory at address
1749 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1750 if any error occurs. If an error occurs, no guarantee is made
1751 about how much data got written. Callers that can deal with
1752 partial writes should call target_write. */
1755 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1757 /* See comment in target_read_memory about why the request starts at
1758 current_target.beneath. */
1759 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1760 myaddr
, memaddr
, len
) == len
)
1763 return TARGET_XFER_E_IO
;
1766 /* Fetch the target's memory map. */
1769 target_memory_map (void)
1771 VEC(mem_region_s
) *result
;
1772 struct mem_region
*last_one
, *this_one
;
1774 struct target_ops
*t
;
1777 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1779 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1780 if (t
->to_memory_map
!= NULL
)
1786 result
= t
->to_memory_map (t
);
1790 qsort (VEC_address (mem_region_s
, result
),
1791 VEC_length (mem_region_s
, result
),
1792 sizeof (struct mem_region
), mem_region_cmp
);
1794 /* Check that regions do not overlap. Simultaneously assign
1795 a numbering for the "mem" commands to use to refer to
1798 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1800 this_one
->number
= ix
;
1802 if (last_one
&& last_one
->hi
> this_one
->lo
)
1804 warning (_("Overlapping regions in memory map: ignoring"));
1805 VEC_free (mem_region_s
, result
);
1808 last_one
= this_one
;
1815 target_flash_erase (ULONGEST address
, LONGEST length
)
1817 struct target_ops
*t
;
1819 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1820 if (t
->to_flash_erase
!= NULL
)
1823 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1824 hex_string (address
), phex (length
, 0));
1825 t
->to_flash_erase (t
, address
, length
);
1833 target_flash_done (void)
1835 struct target_ops
*t
;
1837 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1838 if (t
->to_flash_done
!= NULL
)
1841 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1842 t
->to_flash_done (t
);
1850 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1851 struct cmd_list_element
*c
, const char *value
)
1853 fprintf_filtered (file
,
1854 _("Mode for reading from readonly sections is %s.\n"),
1858 /* More generic transfers. */
1860 static enum target_xfer_status
1861 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1862 const char *annex
, gdb_byte
*readbuf
,
1863 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1864 ULONGEST
*xfered_len
)
1866 if (object
== TARGET_OBJECT_MEMORY
1867 && ops
->deprecated_xfer_memory
!= NULL
)
1868 /* If available, fall back to the target's
1869 "deprecated_xfer_memory" method. */
1874 if (writebuf
!= NULL
)
1876 void *buffer
= xmalloc (len
);
1877 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1879 memcpy (buffer
, writebuf
, len
);
1880 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1881 1/*write*/, NULL
, ops
);
1882 do_cleanups (cleanup
);
1884 if (readbuf
!= NULL
)
1885 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1886 0/*read*/, NULL
, ops
);
1889 *xfered_len
= (ULONGEST
) xfered
;
1890 return TARGET_XFER_E_IO
;
1892 else if (xfered
== 0 && errno
== 0)
1893 /* "deprecated_xfer_memory" uses 0, cross checked against
1894 ERRNO as one indication of an error. */
1895 return TARGET_XFER_EOF
;
1897 return TARGET_XFER_E_IO
;
1901 gdb_assert (ops
->beneath
!= NULL
);
1902 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1903 readbuf
, writebuf
, offset
, len
,
1908 /* Target vector read/write partial wrapper functions. */
1910 static enum target_xfer_status
1911 target_read_partial (struct target_ops
*ops
,
1912 enum target_object object
,
1913 const char *annex
, gdb_byte
*buf
,
1914 ULONGEST offset
, ULONGEST len
,
1915 ULONGEST
*xfered_len
)
1917 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
1921 static enum target_xfer_status
1922 target_write_partial (struct target_ops
*ops
,
1923 enum target_object object
,
1924 const char *annex
, const gdb_byte
*buf
,
1925 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
1927 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
1931 /* Wrappers to perform the full transfer. */
1933 /* For docs on target_read see target.h. */
1936 target_read (struct target_ops
*ops
,
1937 enum target_object object
,
1938 const char *annex
, gdb_byte
*buf
,
1939 ULONGEST offset
, LONGEST len
)
1943 while (xfered
< len
)
1945 ULONGEST xfered_len
;
1946 enum target_xfer_status status
;
1948 status
= target_read_partial (ops
, object
, annex
,
1949 (gdb_byte
*) buf
+ xfered
,
1950 offset
+ xfered
, len
- xfered
,
1953 /* Call an observer, notifying them of the xfer progress? */
1954 if (status
== TARGET_XFER_EOF
)
1956 else if (status
== TARGET_XFER_OK
)
1958 xfered
+= xfered_len
;
1968 /* Assuming that the entire [begin, end) range of memory cannot be
1969 read, try to read whatever subrange is possible to read.
1971 The function returns, in RESULT, either zero or one memory block.
1972 If there's a readable subrange at the beginning, it is completely
1973 read and returned. Any further readable subrange will not be read.
1974 Otherwise, if there's a readable subrange at the end, it will be
1975 completely read and returned. Any readable subranges before it
1976 (obviously, not starting at the beginning), will be ignored. In
1977 other cases -- either no readable subrange, or readable subrange(s)
1978 that is neither at the beginning, or end, nothing is returned.
1980 The purpose of this function is to handle a read across a boundary
1981 of accessible memory in a case when memory map is not available.
1982 The above restrictions are fine for this case, but will give
1983 incorrect results if the memory is 'patchy'. However, supporting
1984 'patchy' memory would require trying to read every single byte,
1985 and it seems unacceptable solution. Explicit memory map is
1986 recommended for this case -- and target_read_memory_robust will
1987 take care of reading multiple ranges then. */
1990 read_whatever_is_readable (struct target_ops
*ops
,
1991 ULONGEST begin
, ULONGEST end
,
1992 VEC(memory_read_result_s
) **result
)
1994 gdb_byte
*buf
= xmalloc (end
- begin
);
1995 ULONGEST current_begin
= begin
;
1996 ULONGEST current_end
= end
;
1998 memory_read_result_s r
;
1999 ULONGEST xfered_len
;
2001 /* If we previously failed to read 1 byte, nothing can be done here. */
2002 if (end
- begin
<= 1)
2008 /* Check that either first or the last byte is readable, and give up
2009 if not. This heuristic is meant to permit reading accessible memory
2010 at the boundary of accessible region. */
2011 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2012 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
2017 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2018 buf
+ (end
-begin
) - 1, end
- 1, 1,
2019 &xfered_len
) == TARGET_XFER_OK
)
2030 /* Loop invariant is that the [current_begin, current_end) was previously
2031 found to be not readable as a whole.
2033 Note loop condition -- if the range has 1 byte, we can't divide the range
2034 so there's no point trying further. */
2035 while (current_end
- current_begin
> 1)
2037 ULONGEST first_half_begin
, first_half_end
;
2038 ULONGEST second_half_begin
, second_half_end
;
2040 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2044 first_half_begin
= current_begin
;
2045 first_half_end
= middle
;
2046 second_half_begin
= middle
;
2047 second_half_end
= current_end
;
2051 first_half_begin
= middle
;
2052 first_half_end
= current_end
;
2053 second_half_begin
= current_begin
;
2054 second_half_end
= middle
;
2057 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2058 buf
+ (first_half_begin
- begin
),
2060 first_half_end
- first_half_begin
);
2062 if (xfer
== first_half_end
- first_half_begin
)
2064 /* This half reads up fine. So, the error must be in the
2066 current_begin
= second_half_begin
;
2067 current_end
= second_half_end
;
2071 /* This half is not readable. Because we've tried one byte, we
2072 know some part of this half if actually redable. Go to the next
2073 iteration to divide again and try to read.
2075 We don't handle the other half, because this function only tries
2076 to read a single readable subrange. */
2077 current_begin
= first_half_begin
;
2078 current_end
= first_half_end
;
2084 /* The [begin, current_begin) range has been read. */
2086 r
.end
= current_begin
;
2091 /* The [current_end, end) range has been read. */
2092 LONGEST rlen
= end
- current_end
;
2094 r
.data
= xmalloc (rlen
);
2095 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2096 r
.begin
= current_end
;
2100 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2104 free_memory_read_result_vector (void *x
)
2106 VEC(memory_read_result_s
) *v
= x
;
2107 memory_read_result_s
*current
;
2110 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2112 xfree (current
->data
);
2114 VEC_free (memory_read_result_s
, v
);
2117 VEC(memory_read_result_s
) *
2118 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2120 VEC(memory_read_result_s
) *result
= 0;
2123 while (xfered
< len
)
2125 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2128 /* If there is no explicit region, a fake one should be created. */
2129 gdb_assert (region
);
2131 if (region
->hi
== 0)
2132 rlen
= len
- xfered
;
2134 rlen
= region
->hi
- offset
;
2136 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2138 /* Cannot read this region. Note that we can end up here only
2139 if the region is explicitly marked inaccessible, or
2140 'inaccessible-by-default' is in effect. */
2145 LONGEST to_read
= min (len
- xfered
, rlen
);
2146 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2148 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2149 (gdb_byte
*) buffer
,
2150 offset
+ xfered
, to_read
);
2151 /* Call an observer, notifying them of the xfer progress? */
2154 /* Got an error reading full chunk. See if maybe we can read
2157 read_whatever_is_readable (ops
, offset
+ xfered
,
2158 offset
+ xfered
+ to_read
, &result
);
2163 struct memory_read_result r
;
2165 r
.begin
= offset
+ xfered
;
2166 r
.end
= r
.begin
+ xfer
;
2167 VEC_safe_push (memory_read_result_s
, result
, &r
);
2177 /* An alternative to target_write with progress callbacks. */
2180 target_write_with_progress (struct target_ops
*ops
,
2181 enum target_object object
,
2182 const char *annex
, const gdb_byte
*buf
,
2183 ULONGEST offset
, LONGEST len
,
2184 void (*progress
) (ULONGEST
, void *), void *baton
)
2188 /* Give the progress callback a chance to set up. */
2190 (*progress
) (0, baton
);
2192 while (xfered
< len
)
2194 ULONGEST xfered_len
;
2195 enum target_xfer_status status
;
2197 status
= target_write_partial (ops
, object
, annex
,
2198 (gdb_byte
*) buf
+ xfered
,
2199 offset
+ xfered
, len
- xfered
,
2202 if (status
== TARGET_XFER_EOF
)
2204 if (TARGET_XFER_STATUS_ERROR_P (status
))
2207 gdb_assert (status
== TARGET_XFER_OK
);
2209 (*progress
) (xfered_len
, baton
);
2211 xfered
+= xfered_len
;
2217 /* For docs on target_write see target.h. */
2220 target_write (struct target_ops
*ops
,
2221 enum target_object object
,
2222 const char *annex
, const gdb_byte
*buf
,
2223 ULONGEST offset
, LONGEST len
)
2225 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2229 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2230 the size of the transferred data. PADDING additional bytes are
2231 available in *BUF_P. This is a helper function for
2232 target_read_alloc; see the declaration of that function for more
2236 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2237 const char *annex
, gdb_byte
**buf_p
, int padding
)
2239 size_t buf_alloc
, buf_pos
;
2242 /* This function does not have a length parameter; it reads the
2243 entire OBJECT). Also, it doesn't support objects fetched partly
2244 from one target and partly from another (in a different stratum,
2245 e.g. a core file and an executable). Both reasons make it
2246 unsuitable for reading memory. */
2247 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2249 /* Start by reading up to 4K at a time. The target will throttle
2250 this number down if necessary. */
2252 buf
= xmalloc (buf_alloc
);
2256 ULONGEST xfered_len
;
2257 enum target_xfer_status status
;
2259 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2260 buf_pos
, buf_alloc
- buf_pos
- padding
,
2263 if (status
== TARGET_XFER_EOF
)
2265 /* Read all there was. */
2272 else if (status
!= TARGET_XFER_OK
)
2274 /* An error occurred. */
2276 return TARGET_XFER_E_IO
;
2279 buf_pos
+= xfered_len
;
2281 /* If the buffer is filling up, expand it. */
2282 if (buf_alloc
< buf_pos
* 2)
2285 buf
= xrealloc (buf
, buf_alloc
);
2292 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2293 the size of the transferred data. See the declaration in "target.h"
2294 function for more information about the return value. */
2297 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2298 const char *annex
, gdb_byte
**buf_p
)
2300 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2303 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2304 returned as a string, allocated using xmalloc. If an error occurs
2305 or the transfer is unsupported, NULL is returned. Empty objects
2306 are returned as allocated but empty strings. A warning is issued
2307 if the result contains any embedded NUL bytes. */
2310 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2315 LONGEST i
, transferred
;
2317 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2318 bufstr
= (char *) buffer
;
2320 if (transferred
< 0)
2323 if (transferred
== 0)
2324 return xstrdup ("");
2326 bufstr
[transferred
] = 0;
2328 /* Check for embedded NUL bytes; but allow trailing NULs. */
2329 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2332 warning (_("target object %d, annex %s, "
2333 "contained unexpected null characters"),
2334 (int) object
, annex
? annex
: "(none)");
2341 /* Memory transfer methods. */
2344 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2347 /* This method is used to read from an alternate, non-current
2348 target. This read must bypass the overlay support (as symbols
2349 don't match this target), and GDB's internal cache (wrong cache
2350 for this target). */
2351 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2353 memory_error (TARGET_XFER_E_IO
, addr
);
2357 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2358 int len
, enum bfd_endian byte_order
)
2360 gdb_byte buf
[sizeof (ULONGEST
)];
2362 gdb_assert (len
<= sizeof (buf
));
2363 get_target_memory (ops
, addr
, buf
, len
);
2364 return extract_unsigned_integer (buf
, len
, byte_order
);
2370 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2371 struct bp_target_info
*bp_tgt
)
2373 if (!may_insert_breakpoints
)
2375 warning (_("May not insert breakpoints"));
2379 return current_target
.to_insert_breakpoint (¤t_target
,
2386 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2387 struct bp_target_info
*bp_tgt
)
2389 /* This is kind of a weird case to handle, but the permission might
2390 have been changed after breakpoints were inserted - in which case
2391 we should just take the user literally and assume that any
2392 breakpoints should be left in place. */
2393 if (!may_insert_breakpoints
)
2395 warning (_("May not remove breakpoints"));
2399 return current_target
.to_remove_breakpoint (¤t_target
,
2404 target_info (char *args
, int from_tty
)
2406 struct target_ops
*t
;
2407 int has_all_mem
= 0;
2409 if (symfile_objfile
!= NULL
)
2410 printf_unfiltered (_("Symbols from \"%s\".\n"),
2411 objfile_name (symfile_objfile
));
2413 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2415 if (!(*t
->to_has_memory
) (t
))
2418 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2421 printf_unfiltered (_("\tWhile running this, "
2422 "GDB does not access memory from...\n"));
2423 printf_unfiltered ("%s:\n", t
->to_longname
);
2424 (t
->to_files_info
) (t
);
2425 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2429 /* This function is called before any new inferior is created, e.g.
2430 by running a program, attaching, or connecting to a target.
2431 It cleans up any state from previous invocations which might
2432 change between runs. This is a subset of what target_preopen
2433 resets (things which might change between targets). */
2436 target_pre_inferior (int from_tty
)
2438 /* Clear out solib state. Otherwise the solib state of the previous
2439 inferior might have survived and is entirely wrong for the new
2440 target. This has been observed on GNU/Linux using glibc 2.3. How
2452 Cannot access memory at address 0xdeadbeef
2455 /* In some OSs, the shared library list is the same/global/shared
2456 across inferiors. If code is shared between processes, so are
2457 memory regions and features. */
2458 if (!gdbarch_has_global_solist (target_gdbarch ()))
2460 no_shared_libraries (NULL
, from_tty
);
2462 invalidate_target_mem_regions ();
2464 target_clear_description ();
2467 agent_capability_invalidate ();
2470 /* Callback for iterate_over_inferiors. Gets rid of the given
2474 dispose_inferior (struct inferior
*inf
, void *args
)
2476 struct thread_info
*thread
;
2478 thread
= any_thread_of_process (inf
->pid
);
2481 switch_to_thread (thread
->ptid
);
2483 /* Core inferiors actually should be detached, not killed. */
2484 if (target_has_execution
)
2487 target_detach (NULL
, 0);
2493 /* This is to be called by the open routine before it does
2497 target_preopen (int from_tty
)
2501 if (have_inferiors ())
2504 || !have_live_inferiors ()
2505 || query (_("A program is being debugged already. Kill it? ")))
2506 iterate_over_inferiors (dispose_inferior
, NULL
);
2508 error (_("Program not killed."));
2511 /* Calling target_kill may remove the target from the stack. But if
2512 it doesn't (which seems like a win for UDI), remove it now. */
2513 /* Leave the exec target, though. The user may be switching from a
2514 live process to a core of the same program. */
2515 pop_all_targets_above (file_stratum
);
2517 target_pre_inferior (from_tty
);
2520 /* Detach a target after doing deferred register stores. */
2523 target_detach (const char *args
, int from_tty
)
2525 struct target_ops
* t
;
2527 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2528 /* Don't remove global breakpoints here. They're removed on
2529 disconnection from the target. */
2532 /* If we're in breakpoints-always-inserted mode, have to remove
2533 them before detaching. */
2534 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2536 prepare_for_detach ();
2538 current_target
.to_detach (¤t_target
, args
, from_tty
);
2540 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2545 target_disconnect (char *args
, int from_tty
)
2547 struct target_ops
*t
;
2549 /* If we're in breakpoints-always-inserted mode or if breakpoints
2550 are global across processes, we have to remove them before
2552 remove_breakpoints ();
2554 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2555 if (t
->to_disconnect
!= NULL
)
2558 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2560 t
->to_disconnect (t
, args
, from_tty
);
2568 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2570 struct target_ops
*t
;
2571 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2576 char *status_string
;
2577 char *options_string
;
2579 status_string
= target_waitstatus_to_string (status
);
2580 options_string
= target_options_to_string (options
);
2581 fprintf_unfiltered (gdb_stdlog
,
2582 "target_wait (%d, status, options={%s})"
2584 ptid_get_pid (ptid
), options_string
,
2585 ptid_get_pid (retval
), status_string
);
2586 xfree (status_string
);
2587 xfree (options_string
);
2594 target_pid_to_str (ptid_t ptid
)
2596 struct target_ops
*t
;
2598 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2600 if (t
->to_pid_to_str
!= NULL
)
2601 return (*t
->to_pid_to_str
) (t
, ptid
);
2604 return normal_pid_to_str (ptid
);
2608 target_thread_name (struct thread_info
*info
)
2610 return current_target
.to_thread_name (¤t_target
, info
);
2614 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2616 struct target_ops
*t
;
2618 target_dcache_invalidate ();
2620 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2622 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2623 ptid_get_pid (ptid
),
2624 step
? "step" : "continue",
2625 gdb_signal_to_name (signal
));
2627 registers_changed_ptid (ptid
);
2628 set_executing (ptid
, 1);
2629 set_running (ptid
, 1);
2630 clear_inline_frame_state (ptid
);
2634 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2636 struct target_ops
*t
;
2638 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2640 if (t
->to_pass_signals
!= NULL
)
2646 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2649 for (i
= 0; i
< numsigs
; i
++)
2650 if (pass_signals
[i
])
2651 fprintf_unfiltered (gdb_stdlog
, " %s",
2652 gdb_signal_to_name (i
));
2654 fprintf_unfiltered (gdb_stdlog
, " })\n");
2657 (*t
->to_pass_signals
) (t
, numsigs
, pass_signals
);
2664 target_program_signals (int numsigs
, unsigned char *program_signals
)
2666 struct target_ops
*t
;
2668 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2670 if (t
->to_program_signals
!= NULL
)
2676 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2679 for (i
= 0; i
< numsigs
; i
++)
2680 if (program_signals
[i
])
2681 fprintf_unfiltered (gdb_stdlog
, " %s",
2682 gdb_signal_to_name (i
));
2684 fprintf_unfiltered (gdb_stdlog
, " })\n");
2687 (*t
->to_program_signals
) (t
, numsigs
, program_signals
);
2693 /* Look through the list of possible targets for a target that can
2697 target_follow_fork (int follow_child
, int detach_fork
)
2699 struct target_ops
*t
;
2701 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2703 if (t
->to_follow_fork
!= NULL
)
2705 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2708 fprintf_unfiltered (gdb_stdlog
,
2709 "target_follow_fork (%d, %d) = %d\n",
2710 follow_child
, detach_fork
, retval
);
2715 /* Some target returned a fork event, but did not know how to follow it. */
2716 internal_error (__FILE__
, __LINE__
,
2717 _("could not find a target to follow fork"));
2721 target_mourn_inferior (void)
2723 struct target_ops
*t
;
2725 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2727 if (t
->to_mourn_inferior
!= NULL
)
2729 t
->to_mourn_inferior (t
);
2731 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2733 /* We no longer need to keep handles on any of the object files.
2734 Make sure to release them to avoid unnecessarily locking any
2735 of them while we're not actually debugging. */
2736 bfd_cache_close_all ();
2742 internal_error (__FILE__
, __LINE__
,
2743 _("could not find a target to follow mourn inferior"));
2746 /* Look for a target which can describe architectural features, starting
2747 from TARGET. If we find one, return its description. */
2749 const struct target_desc
*
2750 target_read_description (struct target_ops
*target
)
2752 struct target_ops
*t
;
2754 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2755 if (t
->to_read_description
!= NULL
)
2757 const struct target_desc
*tdesc
;
2759 tdesc
= t
->to_read_description (t
);
2767 /* The default implementation of to_search_memory.
2768 This implements a basic search of memory, reading target memory and
2769 performing the search here (as opposed to performing the search in on the
2770 target side with, for example, gdbserver). */
2773 simple_search_memory (struct target_ops
*ops
,
2774 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2775 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2776 CORE_ADDR
*found_addrp
)
2778 /* NOTE: also defined in find.c testcase. */
2779 #define SEARCH_CHUNK_SIZE 16000
2780 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2781 /* Buffer to hold memory contents for searching. */
2782 gdb_byte
*search_buf
;
2783 unsigned search_buf_size
;
2784 struct cleanup
*old_cleanups
;
2786 search_buf_size
= chunk_size
+ pattern_len
- 1;
2788 /* No point in trying to allocate a buffer larger than the search space. */
2789 if (search_space_len
< search_buf_size
)
2790 search_buf_size
= search_space_len
;
2792 search_buf
= malloc (search_buf_size
);
2793 if (search_buf
== NULL
)
2794 error (_("Unable to allocate memory to perform the search."));
2795 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2797 /* Prime the search buffer. */
2799 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2800 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2802 warning (_("Unable to access %s bytes of target "
2803 "memory at %s, halting search."),
2804 pulongest (search_buf_size
), hex_string (start_addr
));
2805 do_cleanups (old_cleanups
);
2809 /* Perform the search.
2811 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2812 When we've scanned N bytes we copy the trailing bytes to the start and
2813 read in another N bytes. */
2815 while (search_space_len
>= pattern_len
)
2817 gdb_byte
*found_ptr
;
2818 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2820 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2821 pattern
, pattern_len
);
2823 if (found_ptr
!= NULL
)
2825 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2827 *found_addrp
= found_addr
;
2828 do_cleanups (old_cleanups
);
2832 /* Not found in this chunk, skip to next chunk. */
2834 /* Don't let search_space_len wrap here, it's unsigned. */
2835 if (search_space_len
>= chunk_size
)
2836 search_space_len
-= chunk_size
;
2838 search_space_len
= 0;
2840 if (search_space_len
>= pattern_len
)
2842 unsigned keep_len
= search_buf_size
- chunk_size
;
2843 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2846 /* Copy the trailing part of the previous iteration to the front
2847 of the buffer for the next iteration. */
2848 gdb_assert (keep_len
== pattern_len
- 1);
2849 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2851 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2853 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2854 search_buf
+ keep_len
, read_addr
,
2855 nr_to_read
) != nr_to_read
)
2857 warning (_("Unable to access %s bytes of target "
2858 "memory at %s, halting search."),
2859 plongest (nr_to_read
),
2860 hex_string (read_addr
));
2861 do_cleanups (old_cleanups
);
2865 start_addr
+= chunk_size
;
2871 do_cleanups (old_cleanups
);
2875 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2876 sequence of bytes in PATTERN with length PATTERN_LEN.
2878 The result is 1 if found, 0 if not found, and -1 if there was an error
2879 requiring halting of the search (e.g. memory read error).
2880 If the pattern is found the address is recorded in FOUND_ADDRP. */
2883 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2884 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2885 CORE_ADDR
*found_addrp
)
2887 struct target_ops
*t
;
2890 /* We don't use INHERIT to set current_target.to_search_memory,
2891 so we have to scan the target stack and handle targetdebug
2895 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2896 hex_string (start_addr
));
2898 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2899 if (t
->to_search_memory
!= NULL
)
2904 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2905 pattern
, pattern_len
, found_addrp
);
2909 /* If a special version of to_search_memory isn't available, use the
2911 found
= simple_search_memory (current_target
.beneath
,
2912 start_addr
, search_space_len
,
2913 pattern
, pattern_len
, found_addrp
);
2917 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2922 /* Look through the currently pushed targets. If none of them will
2923 be able to restart the currently running process, issue an error
2927 target_require_runnable (void)
2929 struct target_ops
*t
;
2931 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2933 /* If this target knows how to create a new program, then
2934 assume we will still be able to after killing the current
2935 one. Either killing and mourning will not pop T, or else
2936 find_default_run_target will find it again. */
2937 if (t
->to_create_inferior
!= NULL
)
2940 /* Do not worry about thread_stratum targets that can not
2941 create inferiors. Assume they will be pushed again if
2942 necessary, and continue to the process_stratum. */
2943 if (t
->to_stratum
== thread_stratum
2944 || t
->to_stratum
== arch_stratum
)
2947 error (_("The \"%s\" target does not support \"run\". "
2948 "Try \"help target\" or \"continue\"."),
2952 /* This function is only called if the target is running. In that
2953 case there should have been a process_stratum target and it
2954 should either know how to create inferiors, or not... */
2955 internal_error (__FILE__
, __LINE__
, _("No targets found"));
2958 /* Look through the list of possible targets for a target that can
2959 execute a run or attach command without any other data. This is
2960 used to locate the default process stratum.
2962 If DO_MESG is not NULL, the result is always valid (error() is
2963 called for errors); else, return NULL on error. */
2965 static struct target_ops
*
2966 find_default_run_target (char *do_mesg
)
2968 struct target_ops
**t
;
2969 struct target_ops
*runable
= NULL
;
2974 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2977 if ((*t
)->to_can_run
&& target_can_run (*t
))
2987 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
2996 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
2998 struct target_ops
*t
;
3000 t
= find_default_run_target ("attach");
3001 (t
->to_attach
) (t
, args
, from_tty
);
3006 find_default_create_inferior (struct target_ops
*ops
,
3007 char *exec_file
, char *allargs
, char **env
,
3010 struct target_ops
*t
;
3012 t
= find_default_run_target ("run");
3013 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3018 find_default_can_async_p (struct target_ops
*ignore
)
3020 struct target_ops
*t
;
3022 /* This may be called before the target is pushed on the stack;
3023 look for the default process stratum. If there's none, gdb isn't
3024 configured with a native debugger, and target remote isn't
3026 t
= find_default_run_target (NULL
);
3027 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
3028 return (t
->to_can_async_p
) (t
);
3033 find_default_is_async_p (struct target_ops
*ignore
)
3035 struct target_ops
*t
;
3037 /* This may be called before the target is pushed on the stack;
3038 look for the default process stratum. If there's none, gdb isn't
3039 configured with a native debugger, and target remote isn't
3041 t
= find_default_run_target (NULL
);
3042 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
3043 return (t
->to_is_async_p
) (t
);
3048 find_default_supports_non_stop (struct target_ops
*self
)
3050 struct target_ops
*t
;
3052 t
= find_default_run_target (NULL
);
3053 if (t
&& t
->to_supports_non_stop
)
3054 return (t
->to_supports_non_stop
) (t
);
3059 target_supports_non_stop (void)
3061 struct target_ops
*t
;
3063 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3064 if (t
->to_supports_non_stop
)
3065 return t
->to_supports_non_stop (t
);
3070 /* Implement the "info proc" command. */
3073 target_info_proc (char *args
, enum info_proc_what what
)
3075 struct target_ops
*t
;
3077 /* If we're already connected to something that can get us OS
3078 related data, use it. Otherwise, try using the native
3080 if (current_target
.to_stratum
>= process_stratum
)
3081 t
= current_target
.beneath
;
3083 t
= find_default_run_target (NULL
);
3085 for (; t
!= NULL
; t
= t
->beneath
)
3087 if (t
->to_info_proc
!= NULL
)
3089 t
->to_info_proc (t
, args
, what
);
3092 fprintf_unfiltered (gdb_stdlog
,
3093 "target_info_proc (\"%s\", %d)\n", args
, what
);
3103 find_default_supports_disable_randomization (struct target_ops
*self
)
3105 struct target_ops
*t
;
3107 t
= find_default_run_target (NULL
);
3108 if (t
&& t
->to_supports_disable_randomization
)
3109 return (t
->to_supports_disable_randomization
) (t
);
3114 target_supports_disable_randomization (void)
3116 struct target_ops
*t
;
3118 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3119 if (t
->to_supports_disable_randomization
)
3120 return t
->to_supports_disable_randomization (t
);
3126 target_get_osdata (const char *type
)
3128 struct target_ops
*t
;
3130 /* If we're already connected to something that can get us OS
3131 related data, use it. Otherwise, try using the native
3133 if (current_target
.to_stratum
>= process_stratum
)
3134 t
= current_target
.beneath
;
3136 t
= find_default_run_target ("get OS data");
3141 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3144 /* Determine the current address space of thread PTID. */
3146 struct address_space
*
3147 target_thread_address_space (ptid_t ptid
)
3149 struct address_space
*aspace
;
3150 struct inferior
*inf
;
3151 struct target_ops
*t
;
3153 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3155 if (t
->to_thread_address_space
!= NULL
)
3157 aspace
= t
->to_thread_address_space (t
, ptid
);
3158 gdb_assert (aspace
);
3161 fprintf_unfiltered (gdb_stdlog
,
3162 "target_thread_address_space (%s) = %d\n",
3163 target_pid_to_str (ptid
),
3164 address_space_num (aspace
));
3169 /* Fall-back to the "main" address space of the inferior. */
3170 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3172 if (inf
== NULL
|| inf
->aspace
== NULL
)
3173 internal_error (__FILE__
, __LINE__
,
3174 _("Can't determine the current "
3175 "address space of thread %s\n"),
3176 target_pid_to_str (ptid
));
3182 /* Target file operations. */
3184 static struct target_ops
*
3185 default_fileio_target (void)
3187 /* If we're already connected to something that can perform
3188 file I/O, use it. Otherwise, try using the native target. */
3189 if (current_target
.to_stratum
>= process_stratum
)
3190 return current_target
.beneath
;
3192 return find_default_run_target ("file I/O");
3195 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3196 target file descriptor, or -1 if an error occurs (and set
3199 target_fileio_open (const char *filename
, int flags
, int mode
,
3202 struct target_ops
*t
;
3204 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3206 if (t
->to_fileio_open
!= NULL
)
3208 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
3211 fprintf_unfiltered (gdb_stdlog
,
3212 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3213 filename
, flags
, mode
,
3214 fd
, fd
!= -1 ? 0 : *target_errno
);
3219 *target_errno
= FILEIO_ENOSYS
;
3223 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3224 Return the number of bytes written, or -1 if an error occurs
3225 (and set *TARGET_ERRNO). */
3227 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3228 ULONGEST offset
, int *target_errno
)
3230 struct target_ops
*t
;
3232 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3234 if (t
->to_fileio_pwrite
!= NULL
)
3236 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
3240 fprintf_unfiltered (gdb_stdlog
,
3241 "target_fileio_pwrite (%d,...,%d,%s) "
3243 fd
, len
, pulongest (offset
),
3244 ret
, ret
!= -1 ? 0 : *target_errno
);
3249 *target_errno
= FILEIO_ENOSYS
;
3253 /* Read up to LEN bytes FD on the target into READ_BUF.
3254 Return the number of bytes read, or -1 if an error occurs
3255 (and set *TARGET_ERRNO). */
3257 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3258 ULONGEST offset
, int *target_errno
)
3260 struct target_ops
*t
;
3262 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3264 if (t
->to_fileio_pread
!= NULL
)
3266 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3270 fprintf_unfiltered (gdb_stdlog
,
3271 "target_fileio_pread (%d,...,%d,%s) "
3273 fd
, len
, pulongest (offset
),
3274 ret
, ret
!= -1 ? 0 : *target_errno
);
3279 *target_errno
= FILEIO_ENOSYS
;
3283 /* Close FD on the target. Return 0, or -1 if an error occurs
3284 (and set *TARGET_ERRNO). */
3286 target_fileio_close (int fd
, int *target_errno
)
3288 struct target_ops
*t
;
3290 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3292 if (t
->to_fileio_close
!= NULL
)
3294 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3297 fprintf_unfiltered (gdb_stdlog
,
3298 "target_fileio_close (%d) = %d (%d)\n",
3299 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3304 *target_errno
= FILEIO_ENOSYS
;
3308 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3309 occurs (and set *TARGET_ERRNO). */
3311 target_fileio_unlink (const char *filename
, int *target_errno
)
3313 struct target_ops
*t
;
3315 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3317 if (t
->to_fileio_unlink
!= NULL
)
3319 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3322 fprintf_unfiltered (gdb_stdlog
,
3323 "target_fileio_unlink (%s) = %d (%d)\n",
3324 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3329 *target_errno
= FILEIO_ENOSYS
;
3333 /* Read value of symbolic link FILENAME on the target. Return a
3334 null-terminated string allocated via xmalloc, or NULL if an error
3335 occurs (and set *TARGET_ERRNO). */
3337 target_fileio_readlink (const char *filename
, int *target_errno
)
3339 struct target_ops
*t
;
3341 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3343 if (t
->to_fileio_readlink
!= NULL
)
3345 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3348 fprintf_unfiltered (gdb_stdlog
,
3349 "target_fileio_readlink (%s) = %s (%d)\n",
3350 filename
, ret
? ret
: "(nil)",
3351 ret
? 0 : *target_errno
);
3356 *target_errno
= FILEIO_ENOSYS
;
3361 target_fileio_close_cleanup (void *opaque
)
3363 int fd
= *(int *) opaque
;
3366 target_fileio_close (fd
, &target_errno
);
3369 /* Read target file FILENAME. Store the result in *BUF_P and
3370 return the size of the transferred data. PADDING additional bytes are
3371 available in *BUF_P. This is a helper function for
3372 target_fileio_read_alloc; see the declaration of that function for more
3376 target_fileio_read_alloc_1 (const char *filename
,
3377 gdb_byte
**buf_p
, int padding
)
3379 struct cleanup
*close_cleanup
;
3380 size_t buf_alloc
, buf_pos
;
3386 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3390 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3392 /* Start by reading up to 4K at a time. The target will throttle
3393 this number down if necessary. */
3395 buf
= xmalloc (buf_alloc
);
3399 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3400 buf_alloc
- buf_pos
- padding
, buf_pos
,
3404 /* An error occurred. */
3405 do_cleanups (close_cleanup
);
3411 /* Read all there was. */
3412 do_cleanups (close_cleanup
);
3422 /* If the buffer is filling up, expand it. */
3423 if (buf_alloc
< buf_pos
* 2)
3426 buf
= xrealloc (buf
, buf_alloc
);
3433 /* Read target file FILENAME. Store the result in *BUF_P and return
3434 the size of the transferred data. See the declaration in "target.h"
3435 function for more information about the return value. */
3438 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3440 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3443 /* Read target file FILENAME. The result is NUL-terminated and
3444 returned as a string, allocated using xmalloc. If an error occurs
3445 or the transfer is unsupported, NULL is returned. Empty objects
3446 are returned as allocated but empty strings. A warning is issued
3447 if the result contains any embedded NUL bytes. */
3450 target_fileio_read_stralloc (const char *filename
)
3454 LONGEST i
, transferred
;
3456 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3457 bufstr
= (char *) buffer
;
3459 if (transferred
< 0)
3462 if (transferred
== 0)
3463 return xstrdup ("");
3465 bufstr
[transferred
] = 0;
3467 /* Check for embedded NUL bytes; but allow trailing NULs. */
3468 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3471 warning (_("target file %s "
3472 "contained unexpected null characters"),
3482 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3483 CORE_ADDR addr
, int len
)
3485 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3489 default_watchpoint_addr_within_range (struct target_ops
*target
,
3491 CORE_ADDR start
, int length
)
3493 return addr
>= start
&& addr
< start
+ length
;
3496 static struct gdbarch
*
3497 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3499 return target_gdbarch ();
3515 * Find the next target down the stack from the specified target.
3519 find_target_beneath (struct target_ops
*t
)
3527 find_target_at (enum strata stratum
)
3529 struct target_ops
*t
;
3531 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3532 if (t
->to_stratum
== stratum
)
3539 /* The inferior process has died. Long live the inferior! */
3542 generic_mourn_inferior (void)
3546 ptid
= inferior_ptid
;
3547 inferior_ptid
= null_ptid
;
3549 /* Mark breakpoints uninserted in case something tries to delete a
3550 breakpoint while we delete the inferior's threads (which would
3551 fail, since the inferior is long gone). */
3552 mark_breakpoints_out ();
3554 if (!ptid_equal (ptid
, null_ptid
))
3556 int pid
= ptid_get_pid (ptid
);
3557 exit_inferior (pid
);
3560 /* Note this wipes step-resume breakpoints, so needs to be done
3561 after exit_inferior, which ends up referencing the step-resume
3562 breakpoints through clear_thread_inferior_resources. */
3563 breakpoint_init_inferior (inf_exited
);
3565 registers_changed ();
3567 reopen_exec_file ();
3568 reinit_frame_cache ();
3570 if (deprecated_detach_hook
)
3571 deprecated_detach_hook ();
3574 /* Convert a normal process ID to a string. Returns the string in a
3578 normal_pid_to_str (ptid_t ptid
)
3580 static char buf
[32];
3582 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3587 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3589 return normal_pid_to_str (ptid
);
3592 /* Error-catcher for target_find_memory_regions. */
3594 dummy_find_memory_regions (struct target_ops
*self
,
3595 find_memory_region_ftype ignore1
, void *ignore2
)
3597 error (_("Command not implemented for this target."));
3601 /* Error-catcher for target_make_corefile_notes. */
3603 dummy_make_corefile_notes (struct target_ops
*self
,
3604 bfd
*ignore1
, int *ignore2
)
3606 error (_("Command not implemented for this target."));
3610 /* Set up the handful of non-empty slots needed by the dummy target
3614 init_dummy_target (void)
3616 dummy_target
.to_shortname
= "None";
3617 dummy_target
.to_longname
= "None";
3618 dummy_target
.to_doc
= "";
3619 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3620 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3621 dummy_target
.to_supports_disable_randomization
3622 = find_default_supports_disable_randomization
;
3623 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3624 dummy_target
.to_stratum
= dummy_stratum
;
3625 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3626 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3627 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3628 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3629 dummy_target
.to_has_execution
3630 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3631 dummy_target
.to_magic
= OPS_MAGIC
;
3633 install_dummy_methods (&dummy_target
);
3637 debug_to_open (char *args
, int from_tty
)
3639 debug_target
.to_open (args
, from_tty
);
3641 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3645 target_close (struct target_ops
*targ
)
3647 gdb_assert (!target_is_pushed (targ
));
3649 if (targ
->to_xclose
!= NULL
)
3650 targ
->to_xclose (targ
);
3651 else if (targ
->to_close
!= NULL
)
3652 targ
->to_close (targ
);
3655 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3659 target_attach (char *args
, int from_tty
)
3661 current_target
.to_attach (¤t_target
, args
, from_tty
);
3663 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3668 target_thread_alive (ptid_t ptid
)
3670 struct target_ops
*t
;
3672 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3674 if (t
->to_thread_alive
!= NULL
)
3678 retval
= t
->to_thread_alive (t
, ptid
);
3680 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3681 ptid_get_pid (ptid
), retval
);
3691 target_find_new_threads (void)
3693 struct target_ops
*t
;
3695 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3697 if (t
->to_find_new_threads
!= NULL
)
3699 t
->to_find_new_threads (t
);
3701 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3709 target_stop (ptid_t ptid
)
3713 warning (_("May not interrupt or stop the target, ignoring attempt"));
3717 (*current_target
.to_stop
) (¤t_target
, ptid
);
3721 debug_to_post_attach (struct target_ops
*self
, int pid
)
3723 debug_target
.to_post_attach (&debug_target
, pid
);
3725 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3728 /* Concatenate ELEM to LIST, a comma separate list, and return the
3729 result. The LIST incoming argument is released. */
3732 str_comma_list_concat_elem (char *list
, const char *elem
)
3735 return xstrdup (elem
);
3737 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3740 /* Helper for target_options_to_string. If OPT is present in
3741 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3742 Returns the new resulting string. OPT is removed from
3746 do_option (int *target_options
, char *ret
,
3747 int opt
, char *opt_str
)
3749 if ((*target_options
& opt
) != 0)
3751 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3752 *target_options
&= ~opt
;
3759 target_options_to_string (int target_options
)
3763 #define DO_TARG_OPTION(OPT) \
3764 ret = do_option (&target_options, ret, OPT, #OPT)
3766 DO_TARG_OPTION (TARGET_WNOHANG
);
3768 if (target_options
!= 0)
3769 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3777 debug_print_register (const char * func
,
3778 struct regcache
*regcache
, int regno
)
3780 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3782 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3783 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3784 && gdbarch_register_name (gdbarch
, regno
) != NULL
3785 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3786 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3787 gdbarch_register_name (gdbarch
, regno
));
3789 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3790 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3792 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3793 int i
, size
= register_size (gdbarch
, regno
);
3794 gdb_byte buf
[MAX_REGISTER_SIZE
];
3796 regcache_raw_collect (regcache
, regno
, buf
);
3797 fprintf_unfiltered (gdb_stdlog
, " = ");
3798 for (i
= 0; i
< size
; i
++)
3800 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3802 if (size
<= sizeof (LONGEST
))
3804 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3806 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3807 core_addr_to_string_nz (val
), plongest (val
));
3810 fprintf_unfiltered (gdb_stdlog
, "\n");
3814 target_fetch_registers (struct regcache
*regcache
, int regno
)
3816 struct target_ops
*t
;
3818 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3820 if (t
->to_fetch_registers
!= NULL
)
3822 t
->to_fetch_registers (t
, regcache
, regno
);
3824 debug_print_register ("target_fetch_registers", regcache
, regno
);
3831 target_store_registers (struct regcache
*regcache
, int regno
)
3833 struct target_ops
*t
;
3835 if (!may_write_registers
)
3836 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3838 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3841 debug_print_register ("target_store_registers", regcache
, regno
);
3846 target_core_of_thread (ptid_t ptid
)
3848 struct target_ops
*t
;
3850 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3852 if (t
->to_core_of_thread
!= NULL
)
3854 int retval
= t
->to_core_of_thread (t
, ptid
);
3857 fprintf_unfiltered (gdb_stdlog
,
3858 "target_core_of_thread (%d) = %d\n",
3859 ptid_get_pid (ptid
), retval
);
3868 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3870 struct target_ops
*t
;
3872 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3874 if (t
->to_verify_memory
!= NULL
)
3876 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3879 fprintf_unfiltered (gdb_stdlog
,
3880 "target_verify_memory (%s, %s) = %d\n",
3881 paddress (target_gdbarch (), memaddr
),
3891 /* The documentation for this function is in its prototype declaration in
3895 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3897 struct target_ops
*t
;
3899 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3900 if (t
->to_insert_mask_watchpoint
!= NULL
)
3904 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
3907 fprintf_unfiltered (gdb_stdlog
, "\
3908 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3909 core_addr_to_string (addr
),
3910 core_addr_to_string (mask
), rw
, ret
);
3918 /* The documentation for this function is in its prototype declaration in
3922 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3924 struct target_ops
*t
;
3926 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3927 if (t
->to_remove_mask_watchpoint
!= NULL
)
3931 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
3934 fprintf_unfiltered (gdb_stdlog
, "\
3935 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3936 core_addr_to_string (addr
),
3937 core_addr_to_string (mask
), rw
, ret
);
3945 /* The documentation for this function is in its prototype declaration
3949 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
3951 struct target_ops
*t
;
3953 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3954 if (t
->to_masked_watch_num_registers
!= NULL
)
3955 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
3960 /* The documentation for this function is in its prototype declaration
3964 target_ranged_break_num_registers (void)
3966 struct target_ops
*t
;
3968 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3969 if (t
->to_ranged_break_num_registers
!= NULL
)
3970 return t
->to_ranged_break_num_registers (t
);
3977 struct btrace_target_info
*
3978 target_enable_btrace (ptid_t ptid
)
3980 struct target_ops
*t
;
3982 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3983 if (t
->to_enable_btrace
!= NULL
)
3984 return t
->to_enable_btrace (t
, ptid
);
3993 target_disable_btrace (struct btrace_target_info
*btinfo
)
3995 struct target_ops
*t
;
3997 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3998 if (t
->to_disable_btrace
!= NULL
)
4000 t
->to_disable_btrace (t
, btinfo
);
4010 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4012 struct target_ops
*t
;
4014 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4015 if (t
->to_teardown_btrace
!= NULL
)
4017 t
->to_teardown_btrace (t
, btinfo
);
4027 target_read_btrace (VEC (btrace_block_s
) **btrace
,
4028 struct btrace_target_info
*btinfo
,
4029 enum btrace_read_type type
)
4031 struct target_ops
*t
;
4033 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4034 if (t
->to_read_btrace
!= NULL
)
4035 return t
->to_read_btrace (t
, btrace
, btinfo
, type
);
4038 return BTRACE_ERR_NOT_SUPPORTED
;
4044 target_stop_recording (void)
4046 struct target_ops
*t
;
4048 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4049 if (t
->to_stop_recording
!= NULL
)
4051 t
->to_stop_recording (t
);
4055 /* This is optional. */
4061 target_info_record (void)
4063 struct target_ops
*t
;
4065 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4066 if (t
->to_info_record
!= NULL
)
4068 t
->to_info_record (t
);
4078 target_save_record (const char *filename
)
4080 struct target_ops
*t
;
4082 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4083 if (t
->to_save_record
!= NULL
)
4085 t
->to_save_record (t
, filename
);
4095 target_supports_delete_record (void)
4097 struct target_ops
*t
;
4099 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4100 if (t
->to_delete_record
!= NULL
)
4109 target_delete_record (void)
4111 struct target_ops
*t
;
4113 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4114 if (t
->to_delete_record
!= NULL
)
4116 t
->to_delete_record (t
);
4126 target_record_is_replaying (void)
4128 struct target_ops
*t
;
4130 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4131 if (t
->to_record_is_replaying
!= NULL
)
4132 return t
->to_record_is_replaying (t
);
4140 target_goto_record_begin (void)
4142 struct target_ops
*t
;
4144 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4145 if (t
->to_goto_record_begin
!= NULL
)
4147 t
->to_goto_record_begin (t
);
4157 target_goto_record_end (void)
4159 struct target_ops
*t
;
4161 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4162 if (t
->to_goto_record_end
!= NULL
)
4164 t
->to_goto_record_end (t
);
4174 target_goto_record (ULONGEST insn
)
4176 struct target_ops
*t
;
4178 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4179 if (t
->to_goto_record
!= NULL
)
4181 t
->to_goto_record (t
, insn
);
4191 target_insn_history (int size
, int flags
)
4193 struct target_ops
*t
;
4195 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4196 if (t
->to_insn_history
!= NULL
)
4198 t
->to_insn_history (t
, size
, flags
);
4208 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4210 struct target_ops
*t
;
4212 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4213 if (t
->to_insn_history_from
!= NULL
)
4215 t
->to_insn_history_from (t
, from
, size
, flags
);
4225 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4227 struct target_ops
*t
;
4229 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4230 if (t
->to_insn_history_range
!= NULL
)
4232 t
->to_insn_history_range (t
, begin
, end
, flags
);
4242 target_call_history (int size
, int flags
)
4244 struct target_ops
*t
;
4246 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4247 if (t
->to_call_history
!= NULL
)
4249 t
->to_call_history (t
, size
, flags
);
4259 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4261 struct target_ops
*t
;
4263 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4264 if (t
->to_call_history_from
!= NULL
)
4266 t
->to_call_history_from (t
, begin
, size
, flags
);
4276 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4278 struct target_ops
*t
;
4280 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4281 if (t
->to_call_history_range
!= NULL
)
4283 t
->to_call_history_range (t
, begin
, end
, flags
);
4291 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
4293 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
4295 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4300 const struct frame_unwind
*
4301 target_get_unwinder (void)
4303 struct target_ops
*t
;
4305 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4306 if (t
->to_get_unwinder
!= NULL
)
4307 return t
->to_get_unwinder
;
4314 const struct frame_unwind
*
4315 target_get_tailcall_unwinder (void)
4317 struct target_ops
*t
;
4319 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4320 if (t
->to_get_tailcall_unwinder
!= NULL
)
4321 return t
->to_get_tailcall_unwinder
;
4329 forward_target_decr_pc_after_break (struct target_ops
*ops
,
4330 struct gdbarch
*gdbarch
)
4332 for (; ops
!= NULL
; ops
= ops
->beneath
)
4333 if (ops
->to_decr_pc_after_break
!= NULL
)
4334 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
4336 return gdbarch_decr_pc_after_break (gdbarch
);
4342 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
4344 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
4348 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4349 int write
, struct mem_attrib
*attrib
,
4350 struct target_ops
*target
)
4354 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4357 fprintf_unfiltered (gdb_stdlog
,
4358 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4359 paddress (target_gdbarch (), memaddr
), len
,
4360 write
? "write" : "read", retval
);
4366 fputs_unfiltered (", bytes =", gdb_stdlog
);
4367 for (i
= 0; i
< retval
; i
++)
4369 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4371 if (targetdebug
< 2 && i
> 0)
4373 fprintf_unfiltered (gdb_stdlog
, " ...");
4376 fprintf_unfiltered (gdb_stdlog
, "\n");
4379 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4383 fputc_unfiltered ('\n', gdb_stdlog
);
4389 debug_to_files_info (struct target_ops
*target
)
4391 debug_target
.to_files_info (target
);
4393 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4397 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4398 struct bp_target_info
*bp_tgt
)
4402 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4404 fprintf_unfiltered (gdb_stdlog
,
4405 "target_insert_breakpoint (%s, xxx) = %ld\n",
4406 core_addr_to_string (bp_tgt
->placed_address
),
4407 (unsigned long) retval
);
4412 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
4413 struct bp_target_info
*bp_tgt
)
4417 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
4419 fprintf_unfiltered (gdb_stdlog
,
4420 "target_remove_breakpoint (%s, xxx) = %ld\n",
4421 core_addr_to_string (bp_tgt
->placed_address
),
4422 (unsigned long) retval
);
4427 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
4428 int type
, int cnt
, int from_tty
)
4432 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
4433 type
, cnt
, from_tty
);
4435 fprintf_unfiltered (gdb_stdlog
,
4436 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4437 (unsigned long) type
,
4438 (unsigned long) cnt
,
4439 (unsigned long) from_tty
,
4440 (unsigned long) retval
);
4445 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
4446 CORE_ADDR addr
, int len
)
4450 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
4453 fprintf_unfiltered (gdb_stdlog
,
4454 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4455 core_addr_to_string (addr
), (unsigned long) len
,
4456 core_addr_to_string (retval
));
4461 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
4462 CORE_ADDR addr
, int len
, int rw
,
4463 struct expression
*cond
)
4467 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
4471 fprintf_unfiltered (gdb_stdlog
,
4472 "target_can_accel_watchpoint_condition "
4473 "(%s, %d, %d, %s) = %ld\n",
4474 core_addr_to_string (addr
), len
, rw
,
4475 host_address_to_string (cond
), (unsigned long) retval
);
4480 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4484 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4486 fprintf_unfiltered (gdb_stdlog
,
4487 "target_stopped_by_watchpoint () = %ld\n",
4488 (unsigned long) retval
);
4493 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4497 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4499 fprintf_unfiltered (gdb_stdlog
,
4500 "target_stopped_data_address ([%s]) = %ld\n",
4501 core_addr_to_string (*addr
),
4502 (unsigned long)retval
);
4507 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4509 CORE_ADDR start
, int length
)
4513 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4516 fprintf_filtered (gdb_stdlog
,
4517 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4518 core_addr_to_string (addr
), core_addr_to_string (start
),
4524 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4525 struct gdbarch
*gdbarch
,
4526 struct bp_target_info
*bp_tgt
)
4530 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4533 fprintf_unfiltered (gdb_stdlog
,
4534 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4535 core_addr_to_string (bp_tgt
->placed_address
),
4536 (unsigned long) retval
);
4541 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4542 struct gdbarch
*gdbarch
,
4543 struct bp_target_info
*bp_tgt
)
4547 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4550 fprintf_unfiltered (gdb_stdlog
,
4551 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4552 core_addr_to_string (bp_tgt
->placed_address
),
4553 (unsigned long) retval
);
4558 debug_to_insert_watchpoint (struct target_ops
*self
,
4559 CORE_ADDR addr
, int len
, int type
,
4560 struct expression
*cond
)
4564 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4565 addr
, len
, type
, cond
);
4567 fprintf_unfiltered (gdb_stdlog
,
4568 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4569 core_addr_to_string (addr
), len
, type
,
4570 host_address_to_string (cond
), (unsigned long) retval
);
4575 debug_to_remove_watchpoint (struct target_ops
*self
,
4576 CORE_ADDR addr
, int len
, int type
,
4577 struct expression
*cond
)
4581 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4582 addr
, len
, type
, cond
);
4584 fprintf_unfiltered (gdb_stdlog
,
4585 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4586 core_addr_to_string (addr
), len
, type
,
4587 host_address_to_string (cond
), (unsigned long) retval
);
4592 debug_to_terminal_init (struct target_ops
*self
)
4594 debug_target
.to_terminal_init (&debug_target
);
4596 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4600 debug_to_terminal_inferior (struct target_ops
*self
)
4602 debug_target
.to_terminal_inferior (&debug_target
);
4604 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4608 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4610 debug_target
.to_terminal_ours_for_output (&debug_target
);
4612 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4616 debug_to_terminal_ours (struct target_ops
*self
)
4618 debug_target
.to_terminal_ours (&debug_target
);
4620 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4624 debug_to_terminal_save_ours (struct target_ops
*self
)
4626 debug_target
.to_terminal_save_ours (&debug_target
);
4628 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4632 debug_to_terminal_info (struct target_ops
*self
,
4633 const char *arg
, int from_tty
)
4635 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4637 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4642 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4644 debug_target
.to_load (&debug_target
, args
, from_tty
);
4646 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4650 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4652 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4654 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4655 ptid_get_pid (ptid
));
4659 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4663 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4665 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4672 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4676 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4678 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4685 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4689 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4691 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4698 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4702 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4704 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4711 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4715 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4717 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4724 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4728 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4730 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4737 debug_to_has_exited (struct target_ops
*self
,
4738 int pid
, int wait_status
, int *exit_status
)
4742 has_exited
= debug_target
.to_has_exited (&debug_target
,
4743 pid
, wait_status
, exit_status
);
4745 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4746 pid
, wait_status
, *exit_status
, has_exited
);
4752 debug_to_can_run (struct target_ops
*self
)
4756 retval
= debug_target
.to_can_run (&debug_target
);
4758 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4763 static struct gdbarch
*
4764 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4766 struct gdbarch
*retval
;
4768 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4770 fprintf_unfiltered (gdb_stdlog
,
4771 "target_thread_architecture (%s) = %s [%s]\n",
4772 target_pid_to_str (ptid
),
4773 host_address_to_string (retval
),
4774 gdbarch_bfd_arch_info (retval
)->printable_name
);
4779 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4781 debug_target
.to_stop (&debug_target
, ptid
);
4783 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4784 target_pid_to_str (ptid
));
4788 debug_to_rcmd (struct target_ops
*self
, char *command
,
4789 struct ui_file
*outbuf
)
4791 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4792 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4796 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4800 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4802 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4809 setup_target_debug (void)
4811 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4813 current_target
.to_open
= debug_to_open
;
4814 current_target
.to_post_attach
= debug_to_post_attach
;
4815 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4816 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4817 current_target
.to_files_info
= debug_to_files_info
;
4818 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4819 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4820 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4821 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4822 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4823 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4824 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4825 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4826 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4827 current_target
.to_watchpoint_addr_within_range
4828 = debug_to_watchpoint_addr_within_range
;
4829 current_target
.to_region_ok_for_hw_watchpoint
4830 = debug_to_region_ok_for_hw_watchpoint
;
4831 current_target
.to_can_accel_watchpoint_condition
4832 = debug_to_can_accel_watchpoint_condition
;
4833 current_target
.to_terminal_init
= debug_to_terminal_init
;
4834 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4835 current_target
.to_terminal_ours_for_output
4836 = debug_to_terminal_ours_for_output
;
4837 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4838 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4839 current_target
.to_terminal_info
= debug_to_terminal_info
;
4840 current_target
.to_load
= debug_to_load
;
4841 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4842 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4843 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4844 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4845 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4846 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4847 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4848 current_target
.to_has_exited
= debug_to_has_exited
;
4849 current_target
.to_can_run
= debug_to_can_run
;
4850 current_target
.to_stop
= debug_to_stop
;
4851 current_target
.to_rcmd
= debug_to_rcmd
;
4852 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4853 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4857 static char targ_desc
[] =
4858 "Names of targets and files being debugged.\nShows the entire \
4859 stack of targets currently in use (including the exec-file,\n\
4860 core-file, and process, if any), as well as the symbol file name.";
4863 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4865 error (_("\"monitor\" command not supported by this target."));
4869 do_monitor_command (char *cmd
,
4872 target_rcmd (cmd
, gdb_stdtarg
);
4875 /* Print the name of each layers of our target stack. */
4878 maintenance_print_target_stack (char *cmd
, int from_tty
)
4880 struct target_ops
*t
;
4882 printf_filtered (_("The current target stack is:\n"));
4884 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4886 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4890 /* Controls if async mode is permitted. */
4891 int target_async_permitted
= 0;
4893 /* The set command writes to this variable. If the inferior is
4894 executing, target_async_permitted is *not* updated. */
4895 static int target_async_permitted_1
= 0;
4898 set_target_async_command (char *args
, int from_tty
,
4899 struct cmd_list_element
*c
)
4901 if (have_live_inferiors ())
4903 target_async_permitted_1
= target_async_permitted
;
4904 error (_("Cannot change this setting while the inferior is running."));
4907 target_async_permitted
= target_async_permitted_1
;
4911 show_target_async_command (struct ui_file
*file
, int from_tty
,
4912 struct cmd_list_element
*c
,
4915 fprintf_filtered (file
,
4916 _("Controlling the inferior in "
4917 "asynchronous mode is %s.\n"), value
);
4920 /* Temporary copies of permission settings. */
4922 static int may_write_registers_1
= 1;
4923 static int may_write_memory_1
= 1;
4924 static int may_insert_breakpoints_1
= 1;
4925 static int may_insert_tracepoints_1
= 1;
4926 static int may_insert_fast_tracepoints_1
= 1;
4927 static int may_stop_1
= 1;
4929 /* Make the user-set values match the real values again. */
4932 update_target_permissions (void)
4934 may_write_registers_1
= may_write_registers
;
4935 may_write_memory_1
= may_write_memory
;
4936 may_insert_breakpoints_1
= may_insert_breakpoints
;
4937 may_insert_tracepoints_1
= may_insert_tracepoints
;
4938 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4939 may_stop_1
= may_stop
;
4942 /* The one function handles (most of) the permission flags in the same
4946 set_target_permissions (char *args
, int from_tty
,
4947 struct cmd_list_element
*c
)
4949 if (target_has_execution
)
4951 update_target_permissions ();
4952 error (_("Cannot change this setting while the inferior is running."));
4955 /* Make the real values match the user-changed values. */
4956 may_write_registers
= may_write_registers_1
;
4957 may_insert_breakpoints
= may_insert_breakpoints_1
;
4958 may_insert_tracepoints
= may_insert_tracepoints_1
;
4959 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4960 may_stop
= may_stop_1
;
4961 update_observer_mode ();
4964 /* Set memory write permission independently of observer mode. */
4967 set_write_memory_permission (char *args
, int from_tty
,
4968 struct cmd_list_element
*c
)
4970 /* Make the real values match the user-changed values. */
4971 may_write_memory
= may_write_memory_1
;
4972 update_observer_mode ();
4977 initialize_targets (void)
4979 init_dummy_target ();
4980 push_target (&dummy_target
);
4982 add_info ("target", target_info
, targ_desc
);
4983 add_info ("files", target_info
, targ_desc
);
4985 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
4986 Set target debugging."), _("\
4987 Show target debugging."), _("\
4988 When non-zero, target debugging is enabled. Higher numbers are more\n\
4989 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4993 &setdebuglist
, &showdebuglist
);
4995 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
4996 &trust_readonly
, _("\
4997 Set mode for reading from readonly sections."), _("\
4998 Show mode for reading from readonly sections."), _("\
4999 When this mode is on, memory reads from readonly sections (such as .text)\n\
5000 will be read from the object file instead of from the target. This will\n\
5001 result in significant performance improvement for remote targets."),
5003 show_trust_readonly
,
5004 &setlist
, &showlist
);
5006 add_com ("monitor", class_obscure
, do_monitor_command
,
5007 _("Send a command to the remote monitor (remote targets only)."));
5009 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5010 _("Print the name of each layer of the internal target stack."),
5011 &maintenanceprintlist
);
5013 add_setshow_boolean_cmd ("target-async", no_class
,
5014 &target_async_permitted_1
, _("\
5015 Set whether gdb controls the inferior in asynchronous mode."), _("\
5016 Show whether gdb controls the inferior in asynchronous mode."), _("\
5017 Tells gdb whether to control the inferior in asynchronous mode."),
5018 set_target_async_command
,
5019 show_target_async_command
,
5023 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5024 &may_write_registers_1
, _("\
5025 Set permission to write into registers."), _("\
5026 Show permission to write into registers."), _("\
5027 When this permission is on, GDB may write into the target's registers.\n\
5028 Otherwise, any sort of write attempt will result in an error."),
5029 set_target_permissions
, NULL
,
5030 &setlist
, &showlist
);
5032 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5033 &may_write_memory_1
, _("\
5034 Set permission to write into target memory."), _("\
5035 Show permission to write into target memory."), _("\
5036 When this permission is on, GDB may write into the target's memory.\n\
5037 Otherwise, any sort of write attempt will result in an error."),
5038 set_write_memory_permission
, NULL
,
5039 &setlist
, &showlist
);
5041 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5042 &may_insert_breakpoints_1
, _("\
5043 Set permission to insert breakpoints in the target."), _("\
5044 Show permission to insert breakpoints in the target."), _("\
5045 When this permission is on, GDB may insert breakpoints in the program.\n\
5046 Otherwise, any sort of insertion attempt will result in an error."),
5047 set_target_permissions
, NULL
,
5048 &setlist
, &showlist
);
5050 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5051 &may_insert_tracepoints_1
, _("\
5052 Set permission to insert tracepoints in the target."), _("\
5053 Show permission to insert tracepoints in the target."), _("\
5054 When this permission is on, GDB may insert tracepoints in the program.\n\
5055 Otherwise, any sort of insertion attempt will result in an error."),
5056 set_target_permissions
, NULL
,
5057 &setlist
, &showlist
);
5059 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5060 &may_insert_fast_tracepoints_1
, _("\
5061 Set permission to insert fast tracepoints in the target."), _("\
5062 Show permission to insert fast tracepoints in the target."), _("\
5063 When this permission is on, GDB may insert fast tracepoints.\n\
5064 Otherwise, any sort of insertion attempt will result in an error."),
5065 set_target_permissions
, NULL
,
5066 &setlist
, &showlist
);
5068 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5070 Set permission to interrupt or signal the target."), _("\
5071 Show permission to interrupt or signal the target."), _("\
5072 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5073 Otherwise, any attempt to interrupt or stop will be ignored."),
5074 set_target_permissions
, NULL
,
5075 &setlist
, &showlist
);