1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2012 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/>. */
24 #include "gdb_string.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"
47 static void target_info (char *, int);
49 static void default_terminal_info (char *, int);
51 static int default_watchpoint_addr_within_range (struct target_ops
*,
52 CORE_ADDR
, CORE_ADDR
, int);
54 static int default_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
56 static void tcomplain (void) ATTRIBUTE_NORETURN
;
58 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
60 static int return_zero (void);
62 static int return_one (void);
64 static int return_minus_one (void);
66 void target_ignore (void);
68 static void target_command (char *, int);
70 static struct target_ops
*find_default_run_target (char *);
72 static LONGEST
default_xfer_partial (struct target_ops
*ops
,
73 enum target_object object
,
74 const char *annex
, gdb_byte
*readbuf
,
75 const gdb_byte
*writebuf
,
76 ULONGEST offset
, LONGEST len
);
78 static LONGEST
current_xfer_partial (struct target_ops
*ops
,
79 enum target_object object
,
80 const char *annex
, gdb_byte
*readbuf
,
81 const gdb_byte
*writebuf
,
82 ULONGEST offset
, LONGEST len
);
84 static LONGEST
target_xfer_partial (struct target_ops
*ops
,
85 enum target_object object
,
87 void *readbuf
, const void *writebuf
,
88 ULONGEST offset
, LONGEST len
);
90 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
93 static void init_dummy_target (void);
95 static struct target_ops debug_target
;
97 static void debug_to_open (char *, int);
99 static void debug_to_prepare_to_store (struct regcache
*);
101 static void debug_to_files_info (struct target_ops
*);
103 static int debug_to_insert_breakpoint (struct gdbarch
*,
104 struct bp_target_info
*);
106 static int debug_to_remove_breakpoint (struct gdbarch
*,
107 struct bp_target_info
*);
109 static int debug_to_can_use_hw_breakpoint (int, int, int);
111 static int debug_to_insert_hw_breakpoint (struct gdbarch
*,
112 struct bp_target_info
*);
114 static int debug_to_remove_hw_breakpoint (struct gdbarch
*,
115 struct bp_target_info
*);
117 static int debug_to_insert_watchpoint (CORE_ADDR
, int, int,
118 struct expression
*);
120 static int debug_to_remove_watchpoint (CORE_ADDR
, int, int,
121 struct expression
*);
123 static int debug_to_stopped_by_watchpoint (void);
125 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
127 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
128 CORE_ADDR
, CORE_ADDR
, int);
130 static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
132 static int debug_to_can_accel_watchpoint_condition (CORE_ADDR
, int, int,
133 struct expression
*);
135 static void debug_to_terminal_init (void);
137 static void debug_to_terminal_inferior (void);
139 static void debug_to_terminal_ours_for_output (void);
141 static void debug_to_terminal_save_ours (void);
143 static void debug_to_terminal_ours (void);
145 static void debug_to_terminal_info (char *, int);
147 static void debug_to_load (char *, int);
149 static int debug_to_can_run (void);
151 static void debug_to_stop (ptid_t
);
153 /* Pointer to array of target architecture structures; the size of the
154 array; the current index into the array; the allocated size of the
156 struct target_ops
**target_structs
;
157 unsigned target_struct_size
;
158 unsigned target_struct_index
;
159 unsigned target_struct_allocsize
;
160 #define DEFAULT_ALLOCSIZE 10
162 /* The initial current target, so that there is always a semi-valid
165 static struct target_ops dummy_target
;
167 /* Top of target stack. */
169 static struct target_ops
*target_stack
;
171 /* The target structure we are currently using to talk to a process
172 or file or whatever "inferior" we have. */
174 struct target_ops current_target
;
176 /* Command list for target. */
178 static struct cmd_list_element
*targetlist
= NULL
;
180 /* Nonzero if we should trust readonly sections from the
181 executable when reading memory. */
183 static int trust_readonly
= 0;
185 /* Nonzero if we should show true memory content including
186 memory breakpoint inserted by gdb. */
188 static int show_memory_breakpoints
= 0;
190 /* These globals control whether GDB attempts to perform these
191 operations; they are useful for targets that need to prevent
192 inadvertant disruption, such as in non-stop mode. */
194 int may_write_registers
= 1;
196 int may_write_memory
= 1;
198 int may_insert_breakpoints
= 1;
200 int may_insert_tracepoints
= 1;
202 int may_insert_fast_tracepoints
= 1;
206 /* Non-zero if we want to see trace of target level stuff. */
208 static int targetdebug
= 0;
210 show_targetdebug (struct ui_file
*file
, int from_tty
,
211 struct cmd_list_element
*c
, const char *value
)
213 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
216 static void setup_target_debug (void);
218 /* The option sets this. */
219 static int stack_cache_enabled_p_1
= 1;
220 /* And set_stack_cache_enabled_p updates this.
221 The reason for the separation is so that we don't flush the cache for
222 on->on transitions. */
223 static int stack_cache_enabled_p
= 1;
225 /* This is called *after* the stack-cache has been set.
226 Flush the cache for off->on and on->off transitions.
227 There's no real need to flush the cache for on->off transitions,
228 except cleanliness. */
231 set_stack_cache_enabled_p (char *args
, int from_tty
,
232 struct cmd_list_element
*c
)
234 if (stack_cache_enabled_p
!= stack_cache_enabled_p_1
)
235 target_dcache_invalidate ();
237 stack_cache_enabled_p
= stack_cache_enabled_p_1
;
241 show_stack_cache_enabled_p (struct ui_file
*file
, int from_tty
,
242 struct cmd_list_element
*c
, const char *value
)
244 fprintf_filtered (file
, _("Cache use for stack accesses is %s.\n"), value
);
247 /* Cache of memory operations, to speed up remote access. */
248 static DCACHE
*target_dcache
;
250 /* Invalidate the target dcache. */
253 target_dcache_invalidate (void)
255 dcache_invalidate (target_dcache
);
258 /* The user just typed 'target' without the name of a target. */
261 target_command (char *arg
, int from_tty
)
263 fputs_filtered ("Argument required (target name). Try `help target'\n",
267 /* Default target_has_* methods for process_stratum targets. */
270 default_child_has_all_memory (struct target_ops
*ops
)
272 /* If no inferior selected, then we can't read memory here. */
273 if (ptid_equal (inferior_ptid
, null_ptid
))
280 default_child_has_memory (struct target_ops
*ops
)
282 /* If no inferior selected, then we can't read memory here. */
283 if (ptid_equal (inferior_ptid
, null_ptid
))
290 default_child_has_stack (struct target_ops
*ops
)
292 /* If no inferior selected, there's no stack. */
293 if (ptid_equal (inferior_ptid
, null_ptid
))
300 default_child_has_registers (struct target_ops
*ops
)
302 /* Can't read registers from no inferior. */
303 if (ptid_equal (inferior_ptid
, null_ptid
))
310 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
312 /* If there's no thread selected, then we can't make it run through
314 if (ptid_equal (the_ptid
, null_ptid
))
322 target_has_all_memory_1 (void)
324 struct target_ops
*t
;
326 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
327 if (t
->to_has_all_memory (t
))
334 target_has_memory_1 (void)
336 struct target_ops
*t
;
338 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
339 if (t
->to_has_memory (t
))
346 target_has_stack_1 (void)
348 struct target_ops
*t
;
350 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
351 if (t
->to_has_stack (t
))
358 target_has_registers_1 (void)
360 struct target_ops
*t
;
362 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
363 if (t
->to_has_registers (t
))
370 target_has_execution_1 (ptid_t the_ptid
)
372 struct target_ops
*t
;
374 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
375 if (t
->to_has_execution (t
, the_ptid
))
382 target_has_execution_current (void)
384 return target_has_execution_1 (inferior_ptid
);
387 /* Add a possible target architecture to the list. */
390 add_target (struct target_ops
*t
)
392 /* Provide default values for all "must have" methods. */
393 if (t
->to_xfer_partial
== NULL
)
394 t
->to_xfer_partial
= default_xfer_partial
;
396 if (t
->to_has_all_memory
== NULL
)
397 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
399 if (t
->to_has_memory
== NULL
)
400 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
402 if (t
->to_has_stack
== NULL
)
403 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
405 if (t
->to_has_registers
== NULL
)
406 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
408 if (t
->to_has_execution
== NULL
)
409 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
413 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
414 target_structs
= (struct target_ops
**) xmalloc
415 (target_struct_allocsize
* sizeof (*target_structs
));
417 if (target_struct_size
>= target_struct_allocsize
)
419 target_struct_allocsize
*= 2;
420 target_structs
= (struct target_ops
**)
421 xrealloc ((char *) target_structs
,
422 target_struct_allocsize
* sizeof (*target_structs
));
424 target_structs
[target_struct_size
++] = t
;
426 if (targetlist
== NULL
)
427 add_prefix_cmd ("target", class_run
, target_command
, _("\
428 Connect to a target machine or process.\n\
429 The first argument is the type or protocol of the target machine.\n\
430 Remaining arguments are interpreted by the target protocol. For more\n\
431 information on the arguments for a particular protocol, type\n\
432 `help target ' followed by the protocol name."),
433 &targetlist
, "target ", 0, &cmdlist
);
434 add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
447 struct target_ops
*t
;
449 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
450 if (t
->to_kill
!= NULL
)
453 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
463 target_load (char *arg
, int from_tty
)
465 target_dcache_invalidate ();
466 (*current_target
.to_load
) (arg
, from_tty
);
470 target_create_inferior (char *exec_file
, char *args
,
471 char **env
, int from_tty
)
473 struct target_ops
*t
;
475 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
477 if (t
->to_create_inferior
!= NULL
)
479 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
481 fprintf_unfiltered (gdb_stdlog
,
482 "target_create_inferior (%s, %s, xxx, %d)\n",
483 exec_file
, args
, from_tty
);
488 internal_error (__FILE__
, __LINE__
,
489 _("could not find a target to create inferior"));
493 target_terminal_inferior (void)
495 /* A background resume (``run&'') should leave GDB in control of the
496 terminal. Use target_can_async_p, not target_is_async_p, since at
497 this point the target is not async yet. However, if sync_execution
498 is not set, we know it will become async prior to resume. */
499 if (target_can_async_p () && !sync_execution
)
502 /* If GDB is resuming the inferior in the foreground, install
503 inferior's terminal modes. */
504 (*current_target
.to_terminal_inferior
) ();
508 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
509 struct target_ops
*t
)
511 errno
= EIO
; /* Can't read/write this location. */
512 return 0; /* No bytes handled. */
518 error (_("You can't do that when your target is `%s'"),
519 current_target
.to_shortname
);
525 error (_("You can't do that without a process to debug."));
529 default_terminal_info (char *args
, int from_tty
)
531 printf_unfiltered (_("No saved terminal information.\n"));
534 /* A default implementation for the to_get_ada_task_ptid target method.
536 This function builds the PTID by using both LWP and TID as part of
537 the PTID lwp and tid elements. The pid used is the pid of the
541 default_get_ada_task_ptid (long lwp
, long tid
)
543 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
546 static enum exec_direction_kind
547 default_execution_direction (void)
549 if (!target_can_execute_reverse
)
551 else if (!target_can_async_p ())
554 gdb_assert_not_reached ("\
555 to_execution_direction must be implemented for reverse async");
558 /* Go through the target stack from top to bottom, copying over zero
559 entries in current_target, then filling in still empty entries. In
560 effect, we are doing class inheritance through the pushed target
563 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
564 is currently implemented, is that it discards any knowledge of
565 which target an inherited method originally belonged to.
566 Consequently, new new target methods should instead explicitly and
567 locally search the target stack for the target that can handle the
571 update_current_target (void)
573 struct target_ops
*t
;
575 /* First, reset current's contents. */
576 memset (¤t_target
, 0, sizeof (current_target
));
578 #define INHERIT(FIELD, TARGET) \
579 if (!current_target.FIELD) \
580 current_target.FIELD = (TARGET)->FIELD
582 for (t
= target_stack
; t
; t
= t
->beneath
)
584 INHERIT (to_shortname
, t
);
585 INHERIT (to_longname
, t
);
587 /* Do not inherit to_open. */
588 /* Do not inherit to_close. */
589 /* Do not inherit to_attach. */
590 INHERIT (to_post_attach
, t
);
591 INHERIT (to_attach_no_wait
, t
);
592 /* Do not inherit to_detach. */
593 /* Do not inherit to_disconnect. */
594 /* Do not inherit to_resume. */
595 /* Do not inherit to_wait. */
596 /* Do not inherit to_fetch_registers. */
597 /* Do not inherit to_store_registers. */
598 INHERIT (to_prepare_to_store
, t
);
599 INHERIT (deprecated_xfer_memory
, t
);
600 INHERIT (to_files_info
, t
);
601 INHERIT (to_insert_breakpoint
, t
);
602 INHERIT (to_remove_breakpoint
, t
);
603 INHERIT (to_can_use_hw_breakpoint
, t
);
604 INHERIT (to_insert_hw_breakpoint
, t
);
605 INHERIT (to_remove_hw_breakpoint
, t
);
606 /* Do not inherit to_ranged_break_num_registers. */
607 INHERIT (to_insert_watchpoint
, t
);
608 INHERIT (to_remove_watchpoint
, t
);
609 /* Do not inherit to_insert_mask_watchpoint. */
610 /* Do not inherit to_remove_mask_watchpoint. */
611 INHERIT (to_stopped_data_address
, t
);
612 INHERIT (to_have_steppable_watchpoint
, t
);
613 INHERIT (to_have_continuable_watchpoint
, t
);
614 INHERIT (to_stopped_by_watchpoint
, t
);
615 INHERIT (to_watchpoint_addr_within_range
, t
);
616 INHERIT (to_region_ok_for_hw_watchpoint
, t
);
617 INHERIT (to_can_accel_watchpoint_condition
, t
);
618 /* Do not inherit to_masked_watch_num_registers. */
619 INHERIT (to_terminal_init
, t
);
620 INHERIT (to_terminal_inferior
, t
);
621 INHERIT (to_terminal_ours_for_output
, t
);
622 INHERIT (to_terminal_ours
, t
);
623 INHERIT (to_terminal_save_ours
, t
);
624 INHERIT (to_terminal_info
, t
);
625 /* Do not inherit to_kill. */
626 INHERIT (to_load
, t
);
627 /* Do no inherit to_create_inferior. */
628 INHERIT (to_post_startup_inferior
, t
);
629 INHERIT (to_insert_fork_catchpoint
, t
);
630 INHERIT (to_remove_fork_catchpoint
, t
);
631 INHERIT (to_insert_vfork_catchpoint
, t
);
632 INHERIT (to_remove_vfork_catchpoint
, t
);
633 /* Do not inherit to_follow_fork. */
634 INHERIT (to_insert_exec_catchpoint
, t
);
635 INHERIT (to_remove_exec_catchpoint
, t
);
636 INHERIT (to_set_syscall_catchpoint
, t
);
637 INHERIT (to_has_exited
, t
);
638 /* Do not inherit to_mourn_inferior. */
639 INHERIT (to_can_run
, t
);
640 /* Do not inherit to_pass_signals. */
641 /* Do not inherit to_thread_alive. */
642 /* Do not inherit to_find_new_threads. */
643 /* Do not inherit to_pid_to_str. */
644 INHERIT (to_extra_thread_info
, t
);
645 INHERIT (to_thread_name
, t
);
646 INHERIT (to_stop
, t
);
647 /* Do not inherit to_xfer_partial. */
648 INHERIT (to_rcmd
, t
);
649 INHERIT (to_pid_to_exec_file
, t
);
650 INHERIT (to_log_command
, t
);
651 INHERIT (to_stratum
, t
);
652 /* Do not inherit to_has_all_memory. */
653 /* Do not inherit to_has_memory. */
654 /* Do not inherit to_has_stack. */
655 /* Do not inherit to_has_registers. */
656 /* Do not inherit to_has_execution. */
657 INHERIT (to_has_thread_control
, t
);
658 INHERIT (to_can_async_p
, t
);
659 INHERIT (to_is_async_p
, t
);
660 INHERIT (to_async
, t
);
661 INHERIT (to_find_memory_regions
, t
);
662 INHERIT (to_make_corefile_notes
, t
);
663 INHERIT (to_get_bookmark
, t
);
664 INHERIT (to_goto_bookmark
, t
);
665 /* Do not inherit to_get_thread_local_address. */
666 INHERIT (to_can_execute_reverse
, t
);
667 INHERIT (to_execution_direction
, t
);
668 INHERIT (to_thread_architecture
, t
);
669 /* Do not inherit to_read_description. */
670 INHERIT (to_get_ada_task_ptid
, t
);
671 /* Do not inherit to_search_memory. */
672 INHERIT (to_supports_multi_process
, t
);
673 INHERIT (to_supports_enable_disable_tracepoint
, t
);
674 INHERIT (to_supports_string_tracing
, t
);
675 INHERIT (to_trace_init
, t
);
676 INHERIT (to_download_tracepoint
, t
);
677 INHERIT (to_can_download_tracepoint
, t
);
678 INHERIT (to_download_trace_state_variable
, t
);
679 INHERIT (to_enable_tracepoint
, t
);
680 INHERIT (to_disable_tracepoint
, t
);
681 INHERIT (to_trace_set_readonly_regions
, t
);
682 INHERIT (to_trace_start
, t
);
683 INHERIT (to_get_trace_status
, t
);
684 INHERIT (to_get_tracepoint_status
, t
);
685 INHERIT (to_trace_stop
, t
);
686 INHERIT (to_trace_find
, t
);
687 INHERIT (to_get_trace_state_variable_value
, t
);
688 INHERIT (to_save_trace_data
, t
);
689 INHERIT (to_upload_tracepoints
, t
);
690 INHERIT (to_upload_trace_state_variables
, t
);
691 INHERIT (to_get_raw_trace_data
, t
);
692 INHERIT (to_get_min_fast_tracepoint_insn_len
, t
);
693 INHERIT (to_set_disconnected_tracing
, t
);
694 INHERIT (to_set_circular_trace_buffer
, t
);
695 INHERIT (to_set_trace_notes
, t
);
696 INHERIT (to_get_tib_address
, t
);
697 INHERIT (to_set_permissions
, t
);
698 INHERIT (to_static_tracepoint_marker_at
, t
);
699 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
700 INHERIT (to_traceframe_info
, t
);
701 INHERIT (to_magic
, t
);
702 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
703 /* Do not inherit to_memory_map. */
704 /* Do not inherit to_flash_erase. */
705 /* Do not inherit to_flash_done. */
709 /* Clean up a target struct so it no longer has any zero pointers in
710 it. Some entries are defaulted to a method that print an error,
711 others are hard-wired to a standard recursive default. */
713 #define de_fault(field, value) \
714 if (!current_target.field) \
715 current_target.field = value
718 (void (*) (char *, int))
723 de_fault (to_post_attach
,
726 de_fault (to_prepare_to_store
,
727 (void (*) (struct regcache
*))
729 de_fault (deprecated_xfer_memory
,
730 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
731 struct mem_attrib
*, struct target_ops
*))
733 de_fault (to_files_info
,
734 (void (*) (struct target_ops
*))
736 de_fault (to_insert_breakpoint
,
737 memory_insert_breakpoint
);
738 de_fault (to_remove_breakpoint
,
739 memory_remove_breakpoint
);
740 de_fault (to_can_use_hw_breakpoint
,
741 (int (*) (int, int, int))
743 de_fault (to_insert_hw_breakpoint
,
744 (int (*) (struct gdbarch
*, struct bp_target_info
*))
746 de_fault (to_remove_hw_breakpoint
,
747 (int (*) (struct gdbarch
*, struct bp_target_info
*))
749 de_fault (to_insert_watchpoint
,
750 (int (*) (CORE_ADDR
, int, int, struct expression
*))
752 de_fault (to_remove_watchpoint
,
753 (int (*) (CORE_ADDR
, int, int, struct expression
*))
755 de_fault (to_stopped_by_watchpoint
,
758 de_fault (to_stopped_data_address
,
759 (int (*) (struct target_ops
*, CORE_ADDR
*))
761 de_fault (to_watchpoint_addr_within_range
,
762 default_watchpoint_addr_within_range
);
763 de_fault (to_region_ok_for_hw_watchpoint
,
764 default_region_ok_for_hw_watchpoint
);
765 de_fault (to_can_accel_watchpoint_condition
,
766 (int (*) (CORE_ADDR
, int, int, struct expression
*))
768 de_fault (to_terminal_init
,
771 de_fault (to_terminal_inferior
,
774 de_fault (to_terminal_ours_for_output
,
777 de_fault (to_terminal_ours
,
780 de_fault (to_terminal_save_ours
,
783 de_fault (to_terminal_info
,
784 default_terminal_info
);
786 (void (*) (char *, int))
788 de_fault (to_post_startup_inferior
,
791 de_fault (to_insert_fork_catchpoint
,
794 de_fault (to_remove_fork_catchpoint
,
797 de_fault (to_insert_vfork_catchpoint
,
800 de_fault (to_remove_vfork_catchpoint
,
803 de_fault (to_insert_exec_catchpoint
,
806 de_fault (to_remove_exec_catchpoint
,
809 de_fault (to_set_syscall_catchpoint
,
810 (int (*) (int, int, int, int, int *))
812 de_fault (to_has_exited
,
813 (int (*) (int, int, int *))
815 de_fault (to_can_run
,
817 de_fault (to_extra_thread_info
,
818 (char *(*) (struct thread_info
*))
820 de_fault (to_thread_name
,
821 (char *(*) (struct thread_info
*))
826 current_target
.to_xfer_partial
= current_xfer_partial
;
828 (void (*) (char *, struct ui_file
*))
830 de_fault (to_pid_to_exec_file
,
834 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
836 de_fault (to_thread_architecture
,
837 default_thread_architecture
);
838 current_target
.to_read_description
= NULL
;
839 de_fault (to_get_ada_task_ptid
,
840 (ptid_t (*) (long, long))
841 default_get_ada_task_ptid
);
842 de_fault (to_supports_multi_process
,
845 de_fault (to_supports_enable_disable_tracepoint
,
848 de_fault (to_supports_string_tracing
,
851 de_fault (to_trace_init
,
854 de_fault (to_download_tracepoint
,
855 (void (*) (struct bp_location
*))
857 de_fault (to_can_download_tracepoint
,
860 de_fault (to_download_trace_state_variable
,
861 (void (*) (struct trace_state_variable
*))
863 de_fault (to_enable_tracepoint
,
864 (void (*) (struct bp_location
*))
866 de_fault (to_disable_tracepoint
,
867 (void (*) (struct bp_location
*))
869 de_fault (to_trace_set_readonly_regions
,
872 de_fault (to_trace_start
,
875 de_fault (to_get_trace_status
,
876 (int (*) (struct trace_status
*))
878 de_fault (to_get_tracepoint_status
,
879 (void (*) (struct breakpoint
*, struct uploaded_tp
*))
881 de_fault (to_trace_stop
,
884 de_fault (to_trace_find
,
885 (int (*) (enum trace_find_type
, int, ULONGEST
, ULONGEST
, int *))
887 de_fault (to_get_trace_state_variable_value
,
888 (int (*) (int, LONGEST
*))
890 de_fault (to_save_trace_data
,
891 (int (*) (const char *))
893 de_fault (to_upload_tracepoints
,
894 (int (*) (struct uploaded_tp
**))
896 de_fault (to_upload_trace_state_variables
,
897 (int (*) (struct uploaded_tsv
**))
899 de_fault (to_get_raw_trace_data
,
900 (LONGEST (*) (gdb_byte
*, ULONGEST
, LONGEST
))
902 de_fault (to_get_min_fast_tracepoint_insn_len
,
905 de_fault (to_set_disconnected_tracing
,
908 de_fault (to_set_circular_trace_buffer
,
911 de_fault (to_set_trace_notes
,
912 (int (*) (char *, char *, char *))
914 de_fault (to_get_tib_address
,
915 (int (*) (ptid_t
, CORE_ADDR
*))
917 de_fault (to_set_permissions
,
920 de_fault (to_static_tracepoint_marker_at
,
921 (int (*) (CORE_ADDR
, struct static_tracepoint_marker
*))
923 de_fault (to_static_tracepoint_markers_by_strid
,
924 (VEC(static_tracepoint_marker_p
) * (*) (const char *))
926 de_fault (to_traceframe_info
,
927 (struct traceframe_info
* (*) (void))
929 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
932 de_fault (to_execution_direction
, default_execution_direction
);
936 /* Finally, position the target-stack beneath the squashed
937 "current_target". That way code looking for a non-inherited
938 target method can quickly and simply find it. */
939 current_target
.beneath
= target_stack
;
942 setup_target_debug ();
945 /* Push a new target type into the stack of the existing target accessors,
946 possibly superseding some of the existing accessors.
948 Rather than allow an empty stack, we always have the dummy target at
949 the bottom stratum, so we can call the function vectors without
953 push_target (struct target_ops
*t
)
955 struct target_ops
**cur
;
957 /* Check magic number. If wrong, it probably means someone changed
958 the struct definition, but not all the places that initialize one. */
959 if (t
->to_magic
!= OPS_MAGIC
)
961 fprintf_unfiltered (gdb_stderr
,
962 "Magic number of %s target struct wrong\n",
964 internal_error (__FILE__
, __LINE__
,
965 _("failed internal consistency check"));
968 /* Find the proper stratum to install this target in. */
969 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
971 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
975 /* If there's already targets at this stratum, remove them. */
976 /* FIXME: cagney/2003-10-15: I think this should be popping all
977 targets to CUR, and not just those at this stratum level. */
978 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
980 /* There's already something at this stratum level. Close it,
981 and un-hook it from the stack. */
982 struct target_ops
*tmp
= (*cur
);
984 (*cur
) = (*cur
)->beneath
;
986 target_close (tmp
, 0);
989 /* We have removed all targets in our stratum, now add the new one. */
993 update_current_target ();
996 /* Remove a target_ops vector from the stack, wherever it may be.
997 Return how many times it was removed (0 or 1). */
1000 unpush_target (struct target_ops
*t
)
1002 struct target_ops
**cur
;
1003 struct target_ops
*tmp
;
1005 if (t
->to_stratum
== dummy_stratum
)
1006 internal_error (__FILE__
, __LINE__
,
1007 _("Attempt to unpush the dummy target"));
1009 /* Look for the specified target. Note that we assume that a target
1010 can only occur once in the target stack. */
1012 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1018 /* If we don't find target_ops, quit. Only open targets should be
1023 /* Unchain the target. */
1025 (*cur
) = (*cur
)->beneath
;
1026 tmp
->beneath
= NULL
;
1028 update_current_target ();
1030 /* Finally close the target. Note we do this after unchaining, so
1031 any target method calls from within the target_close
1032 implementation don't end up in T anymore. */
1033 target_close (t
, 0);
1041 target_close (target_stack
, 0); /* Let it clean up. */
1042 if (unpush_target (target_stack
) == 1)
1045 fprintf_unfiltered (gdb_stderr
,
1046 "pop_target couldn't find target %s\n",
1047 current_target
.to_shortname
);
1048 internal_error (__FILE__
, __LINE__
,
1049 _("failed internal consistency check"));
1053 pop_all_targets_above (enum strata above_stratum
, int quitting
)
1055 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
1057 target_close (target_stack
, quitting
);
1058 if (!unpush_target (target_stack
))
1060 fprintf_unfiltered (gdb_stderr
,
1061 "pop_all_targets couldn't find target %s\n",
1062 target_stack
->to_shortname
);
1063 internal_error (__FILE__
, __LINE__
,
1064 _("failed internal consistency check"));
1071 pop_all_targets (int quitting
)
1073 pop_all_targets_above (dummy_stratum
, quitting
);
1076 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
1079 target_is_pushed (struct target_ops
*t
)
1081 struct target_ops
**cur
;
1083 /* Check magic number. If wrong, it probably means someone changed
1084 the struct definition, but not all the places that initialize one. */
1085 if (t
->to_magic
!= OPS_MAGIC
)
1087 fprintf_unfiltered (gdb_stderr
,
1088 "Magic number of %s target struct wrong\n",
1090 internal_error (__FILE__
, __LINE__
,
1091 _("failed internal consistency check"));
1094 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1101 /* Using the objfile specified in OBJFILE, find the address for the
1102 current thread's thread-local storage with offset OFFSET. */
1104 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1106 volatile CORE_ADDR addr
= 0;
1107 struct target_ops
*target
;
1109 for (target
= current_target
.beneath
;
1111 target
= target
->beneath
)
1113 if (target
->to_get_thread_local_address
!= NULL
)
1118 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch
))
1120 ptid_t ptid
= inferior_ptid
;
1121 volatile struct gdb_exception ex
;
1123 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1127 /* Fetch the load module address for this objfile. */
1128 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch
,
1130 /* If it's 0, throw the appropriate exception. */
1132 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1133 _("TLS load module not found"));
1135 addr
= target
->to_get_thread_local_address (target
, ptid
,
1138 /* If an error occurred, print TLS related messages here. Otherwise,
1139 throw the error to some higher catcher. */
1142 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1146 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1147 error (_("Cannot find thread-local variables "
1148 "in this thread library."));
1150 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1151 if (objfile_is_library
)
1152 error (_("Cannot find shared library `%s' in dynamic"
1153 " linker's load module list"), objfile
->name
);
1155 error (_("Cannot find executable file `%s' in dynamic"
1156 " linker's load module list"), objfile
->name
);
1158 case TLS_NOT_ALLOCATED_YET_ERROR
:
1159 if (objfile_is_library
)
1160 error (_("The inferior has not yet allocated storage for"
1161 " thread-local variables in\n"
1162 "the shared library `%s'\n"
1164 objfile
->name
, target_pid_to_str (ptid
));
1166 error (_("The inferior has not yet allocated storage for"
1167 " thread-local variables in\n"
1168 "the executable `%s'\n"
1170 objfile
->name
, target_pid_to_str (ptid
));
1172 case TLS_GENERIC_ERROR
:
1173 if (objfile_is_library
)
1174 error (_("Cannot find thread-local storage for %s, "
1175 "shared library %s:\n%s"),
1176 target_pid_to_str (ptid
),
1177 objfile
->name
, ex
.message
);
1179 error (_("Cannot find thread-local storage for %s, "
1180 "executable file %s:\n%s"),
1181 target_pid_to_str (ptid
),
1182 objfile
->name
, ex
.message
);
1185 throw_exception (ex
);
1190 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1191 TLS is an ABI-specific thing. But we don't do that yet. */
1193 error (_("Cannot find thread-local variables on this target"));
1199 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1201 /* target_read_string -- read a null terminated string, up to LEN bytes,
1202 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1203 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1204 is responsible for freeing it. Return the number of bytes successfully
1208 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1210 int tlen
, origlen
, offset
, i
;
1214 int buffer_allocated
;
1216 unsigned int nbytes_read
= 0;
1218 gdb_assert (string
);
1220 /* Small for testing. */
1221 buffer_allocated
= 4;
1222 buffer
= xmalloc (buffer_allocated
);
1229 tlen
= MIN (len
, 4 - (memaddr
& 3));
1230 offset
= memaddr
& 3;
1232 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1235 /* The transfer request might have crossed the boundary to an
1236 unallocated region of memory. Retry the transfer, requesting
1240 errcode
= target_read_memory (memaddr
, buf
, 1);
1245 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1249 bytes
= bufptr
- buffer
;
1250 buffer_allocated
*= 2;
1251 buffer
= xrealloc (buffer
, buffer_allocated
);
1252 bufptr
= buffer
+ bytes
;
1255 for (i
= 0; i
< tlen
; i
++)
1257 *bufptr
++ = buf
[i
+ offset
];
1258 if (buf
[i
+ offset
] == '\000')
1260 nbytes_read
+= i
+ 1;
1267 nbytes_read
+= tlen
;
1276 struct target_section_table
*
1277 target_get_section_table (struct target_ops
*target
)
1279 struct target_ops
*t
;
1282 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1284 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1285 if (t
->to_get_section_table
!= NULL
)
1286 return (*t
->to_get_section_table
) (t
);
1291 /* Find a section containing ADDR. */
1293 struct target_section
*
1294 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1296 struct target_section_table
*table
= target_get_section_table (target
);
1297 struct target_section
*secp
;
1302 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1304 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1310 /* Read memory from the live target, even if currently inspecting a
1311 traceframe. The return is the same as that of target_read. */
1314 target_read_live_memory (enum target_object object
,
1315 ULONGEST memaddr
, gdb_byte
*myaddr
, LONGEST len
)
1318 struct cleanup
*cleanup
;
1320 /* Switch momentarily out of tfind mode so to access live memory.
1321 Note that this must not clear global state, such as the frame
1322 cache, which must still remain valid for the previous traceframe.
1323 We may be _building_ the frame cache at this point. */
1324 cleanup
= make_cleanup_restore_traceframe_number ();
1325 set_traceframe_number (-1);
1327 ret
= target_read (current_target
.beneath
, object
, NULL
,
1328 myaddr
, memaddr
, len
);
1330 do_cleanups (cleanup
);
1334 /* Using the set of read-only target sections of OPS, read live
1335 read-only memory. Note that the actual reads start from the
1336 top-most target again.
1338 For interface/parameters/return description see target.h,
1342 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1343 enum target_object object
,
1344 gdb_byte
*readbuf
, ULONGEST memaddr
,
1347 struct target_section
*secp
;
1348 struct target_section_table
*table
;
1350 secp
= target_section_by_addr (ops
, memaddr
);
1352 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1355 struct target_section
*p
;
1356 ULONGEST memend
= memaddr
+ len
;
1358 table
= target_get_section_table (ops
);
1360 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1362 if (memaddr
>= p
->addr
)
1364 if (memend
<= p
->endaddr
)
1366 /* Entire transfer is within this section. */
1367 return target_read_live_memory (object
, memaddr
,
1370 else if (memaddr
>= p
->endaddr
)
1372 /* This section ends before the transfer starts. */
1377 /* This section overlaps the transfer. Just do half. */
1378 len
= p
->endaddr
- memaddr
;
1379 return target_read_live_memory (object
, memaddr
,
1389 /* Perform a partial memory transfer.
1390 For docs see target.h, to_xfer_partial. */
1393 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1394 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1399 struct mem_region
*region
;
1400 struct inferior
*inf
;
1402 /* For accesses to unmapped overlay sections, read directly from
1403 files. Must do this first, as MEMADDR may need adjustment. */
1404 if (readbuf
!= NULL
&& overlay_debugging
)
1406 struct obj_section
*section
= find_pc_overlay (memaddr
);
1408 if (pc_in_unmapped_range (memaddr
, section
))
1410 struct target_section_table
*table
1411 = target_get_section_table (ops
);
1412 const char *section_name
= section
->the_bfd_section
->name
;
1414 memaddr
= overlay_mapped_address (memaddr
, section
);
1415 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1418 table
->sections_end
,
1423 /* Try the executable files, if "trust-readonly-sections" is set. */
1424 if (readbuf
!= NULL
&& trust_readonly
)
1426 struct target_section
*secp
;
1427 struct target_section_table
*table
;
1429 secp
= target_section_by_addr (ops
, memaddr
);
1431 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1434 table
= target_get_section_table (ops
);
1435 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1438 table
->sections_end
,
1443 /* If reading unavailable memory in the context of traceframes, and
1444 this address falls within a read-only section, fallback to
1445 reading from live memory. */
1446 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1448 VEC(mem_range_s
) *available
;
1450 /* If we fail to get the set of available memory, then the
1451 target does not support querying traceframe info, and so we
1452 attempt reading from the traceframe anyway (assuming the
1453 target implements the old QTro packet then). */
1454 if (traceframe_available_memory (&available
, memaddr
, len
))
1456 struct cleanup
*old_chain
;
1458 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1460 if (VEC_empty (mem_range_s
, available
)
1461 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1463 /* Don't read into the traceframe's available
1465 if (!VEC_empty (mem_range_s
, available
))
1467 LONGEST oldlen
= len
;
1469 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1470 gdb_assert (len
<= oldlen
);
1473 do_cleanups (old_chain
);
1475 /* This goes through the topmost target again. */
1476 res
= memory_xfer_live_readonly_partial (ops
, object
,
1477 readbuf
, memaddr
, len
);
1481 /* No use trying further, we know some memory starting
1482 at MEMADDR isn't available. */
1486 /* Don't try to read more than how much is available, in
1487 case the target implements the deprecated QTro packet to
1488 cater for older GDBs (the target's knowledge of read-only
1489 sections may be outdated by now). */
1490 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1492 do_cleanups (old_chain
);
1496 /* Try GDB's internal data cache. */
1497 region
= lookup_mem_region (memaddr
);
1498 /* region->hi == 0 means there's no upper bound. */
1499 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1502 reg_len
= region
->hi
- memaddr
;
1504 switch (region
->attrib
.mode
)
1507 if (writebuf
!= NULL
)
1512 if (readbuf
!= NULL
)
1517 /* We only support writing to flash during "load" for now. */
1518 if (writebuf
!= NULL
)
1519 error (_("Writing to flash memory forbidden in this context"));
1526 if (!ptid_equal (inferior_ptid
, null_ptid
))
1527 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1532 /* The dcache reads whole cache lines; that doesn't play well
1533 with reading from a trace buffer, because reading outside of
1534 the collected memory range fails. */
1535 && get_traceframe_number () == -1
1536 && (region
->attrib
.cache
1537 || (stack_cache_enabled_p
&& object
== TARGET_OBJECT_STACK_MEMORY
)))
1539 if (readbuf
!= NULL
)
1540 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
, readbuf
,
1543 /* FIXME drow/2006-08-09: If we're going to preserve const
1544 correctness dcache_xfer_memory should take readbuf and
1546 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
,
1555 /* If none of those methods found the memory we wanted, fall back
1556 to a target partial transfer. Normally a single call to
1557 to_xfer_partial is enough; if it doesn't recognize an object
1558 it will call the to_xfer_partial of the next target down.
1559 But for memory this won't do. Memory is the only target
1560 object which can be read from more than one valid target.
1561 A core file, for instance, could have some of memory but
1562 delegate other bits to the target below it. So, we must
1563 manually try all targets. */
1567 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1568 readbuf
, writebuf
, memaddr
, reg_len
);
1572 /* We want to continue past core files to executables, but not
1573 past a running target's memory. */
1574 if (ops
->to_has_all_memory (ops
))
1579 while (ops
!= NULL
);
1581 /* Make sure the cache gets updated no matter what - if we are writing
1582 to the stack. Even if this write is not tagged as such, we still need
1583 to update the cache. */
1588 && !region
->attrib
.cache
1589 && stack_cache_enabled_p
1590 && object
!= TARGET_OBJECT_STACK_MEMORY
)
1592 dcache_update (target_dcache
, memaddr
, (void *) writebuf
, res
);
1595 /* If we still haven't got anything, return the last error. We
1600 /* Perform a partial memory transfer. For docs see target.h,
1604 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1605 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1610 /* Zero length requests are ok and require no work. */
1614 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1615 breakpoint insns, thus hiding out from higher layers whether
1616 there are software breakpoints inserted in the code stream. */
1617 if (readbuf
!= NULL
)
1619 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
);
1621 if (res
> 0 && !show_memory_breakpoints
)
1622 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1627 struct cleanup
*old_chain
;
1629 buf
= xmalloc (len
);
1630 old_chain
= make_cleanup (xfree
, buf
);
1631 memcpy (buf
, writebuf
, len
);
1633 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1634 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
);
1636 do_cleanups (old_chain
);
1643 restore_show_memory_breakpoints (void *arg
)
1645 show_memory_breakpoints
= (uintptr_t) arg
;
1649 make_show_memory_breakpoints_cleanup (int show
)
1651 int current
= show_memory_breakpoints
;
1653 show_memory_breakpoints
= show
;
1654 return make_cleanup (restore_show_memory_breakpoints
,
1655 (void *) (uintptr_t) current
);
1658 /* For docs see target.h, to_xfer_partial. */
1661 target_xfer_partial (struct target_ops
*ops
,
1662 enum target_object object
, const char *annex
,
1663 void *readbuf
, const void *writebuf
,
1664 ULONGEST offset
, LONGEST len
)
1668 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1670 if (writebuf
&& !may_write_memory
)
1671 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1672 core_addr_to_string_nz (offset
), plongest (len
));
1674 /* If this is a memory transfer, let the memory-specific code
1675 have a look at it instead. Memory transfers are more
1677 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
)
1678 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1679 writebuf
, offset
, len
);
1682 enum target_object raw_object
= object
;
1684 /* If this is a raw memory transfer, request the normal
1685 memory object from other layers. */
1686 if (raw_object
== TARGET_OBJECT_RAW_MEMORY
)
1687 raw_object
= TARGET_OBJECT_MEMORY
;
1689 retval
= ops
->to_xfer_partial (ops
, raw_object
, annex
, readbuf
,
1690 writebuf
, offset
, len
);
1695 const unsigned char *myaddr
= NULL
;
1697 fprintf_unfiltered (gdb_stdlog
,
1698 "%s:target_xfer_partial "
1699 "(%d, %s, %s, %s, %s, %s) = %s",
1702 (annex
? annex
: "(null)"),
1703 host_address_to_string (readbuf
),
1704 host_address_to_string (writebuf
),
1705 core_addr_to_string_nz (offset
),
1706 plongest (len
), plongest (retval
));
1712 if (retval
> 0 && myaddr
!= NULL
)
1716 fputs_unfiltered (", bytes =", gdb_stdlog
);
1717 for (i
= 0; i
< retval
; i
++)
1719 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1721 if (targetdebug
< 2 && i
> 0)
1723 fprintf_unfiltered (gdb_stdlog
, " ...");
1726 fprintf_unfiltered (gdb_stdlog
, "\n");
1729 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1733 fputc_unfiltered ('\n', gdb_stdlog
);
1738 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
1739 GDB's memory at MYADDR. Returns either 0 for success or an errno value
1740 if any error occurs.
1742 If an error occurs, no guarantee is made about the contents of the data at
1743 MYADDR. In particular, the caller should not depend upon partial reads
1744 filling the buffer with good data. There is no way for the caller to know
1745 how much good data might have been transfered anyway. Callers that can
1746 deal with partial reads should call target_read (which will retry until
1747 it makes no progress, and then return how much was transferred). */
1750 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
1752 /* Dispatch to the topmost target, not the flattened current_target.
1753 Memory accesses check target->to_has_(all_)memory, and the
1754 flattened target doesn't inherit those. */
1755 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1756 myaddr
, memaddr
, len
) == len
)
1762 /* Like target_read_memory, but specify explicitly that this is a read from
1763 the target's stack. This may trigger different cache behavior. */
1766 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
1768 /* Dispatch to the topmost target, not the flattened current_target.
1769 Memory accesses check target->to_has_(all_)memory, and the
1770 flattened target doesn't inherit those. */
1772 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1773 myaddr
, memaddr
, len
) == len
)
1779 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1780 Returns either 0 for success or an errno value if any error occurs.
1781 If an error occurs, no guarantee is made about how much data got written.
1782 Callers that can deal with partial writes should call target_write. */
1785 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
1787 /* Dispatch to the topmost target, not the flattened current_target.
1788 Memory accesses check target->to_has_(all_)memory, and the
1789 flattened target doesn't inherit those. */
1790 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1791 myaddr
, memaddr
, len
) == len
)
1797 /* Write LEN bytes from MYADDR to target raw memory at address
1798 MEMADDR. Returns either 0 for success or an errno value if any
1799 error occurs. If an error occurs, no guarantee is made about how
1800 much data got written. Callers that can deal with partial writes
1801 should call target_write. */
1804 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
1806 /* Dispatch to the topmost target, not the flattened current_target.
1807 Memory accesses check target->to_has_(all_)memory, and the
1808 flattened target doesn't inherit those. */
1809 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1810 myaddr
, memaddr
, len
) == len
)
1816 /* Fetch the target's memory map. */
1819 target_memory_map (void)
1821 VEC(mem_region_s
) *result
;
1822 struct mem_region
*last_one
, *this_one
;
1824 struct target_ops
*t
;
1827 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1829 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1830 if (t
->to_memory_map
!= NULL
)
1836 result
= t
->to_memory_map (t
);
1840 qsort (VEC_address (mem_region_s
, result
),
1841 VEC_length (mem_region_s
, result
),
1842 sizeof (struct mem_region
), mem_region_cmp
);
1844 /* Check that regions do not overlap. Simultaneously assign
1845 a numbering for the "mem" commands to use to refer to
1848 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1850 this_one
->number
= ix
;
1852 if (last_one
&& last_one
->hi
> this_one
->lo
)
1854 warning (_("Overlapping regions in memory map: ignoring"));
1855 VEC_free (mem_region_s
, result
);
1858 last_one
= this_one
;
1865 target_flash_erase (ULONGEST address
, LONGEST length
)
1867 struct target_ops
*t
;
1869 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1870 if (t
->to_flash_erase
!= NULL
)
1873 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1874 hex_string (address
), phex (length
, 0));
1875 t
->to_flash_erase (t
, address
, length
);
1883 target_flash_done (void)
1885 struct target_ops
*t
;
1887 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1888 if (t
->to_flash_done
!= NULL
)
1891 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1892 t
->to_flash_done (t
);
1900 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1901 struct cmd_list_element
*c
, const char *value
)
1903 fprintf_filtered (file
,
1904 _("Mode for reading from readonly sections is %s.\n"),
1908 /* More generic transfers. */
1911 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1912 const char *annex
, gdb_byte
*readbuf
,
1913 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1915 if (object
== TARGET_OBJECT_MEMORY
1916 && ops
->deprecated_xfer_memory
!= NULL
)
1917 /* If available, fall back to the target's
1918 "deprecated_xfer_memory" method. */
1923 if (writebuf
!= NULL
)
1925 void *buffer
= xmalloc (len
);
1926 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1928 memcpy (buffer
, writebuf
, len
);
1929 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1930 1/*write*/, NULL
, ops
);
1931 do_cleanups (cleanup
);
1933 if (readbuf
!= NULL
)
1934 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1935 0/*read*/, NULL
, ops
);
1938 else if (xfered
== 0 && errno
== 0)
1939 /* "deprecated_xfer_memory" uses 0, cross checked against
1940 ERRNO as one indication of an error. */
1945 else if (ops
->beneath
!= NULL
)
1946 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1947 readbuf
, writebuf
, offset
, len
);
1952 /* The xfer_partial handler for the topmost target. Unlike the default,
1953 it does not need to handle memory specially; it just passes all
1954 requests down the stack. */
1957 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1958 const char *annex
, gdb_byte
*readbuf
,
1959 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1961 if (ops
->beneath
!= NULL
)
1962 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1963 readbuf
, writebuf
, offset
, len
);
1968 /* Target vector read/write partial wrapper functions. */
1971 target_read_partial (struct target_ops
*ops
,
1972 enum target_object object
,
1973 const char *annex
, gdb_byte
*buf
,
1974 ULONGEST offset
, LONGEST len
)
1976 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
1980 target_write_partial (struct target_ops
*ops
,
1981 enum target_object object
,
1982 const char *annex
, const gdb_byte
*buf
,
1983 ULONGEST offset
, LONGEST len
)
1985 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
1988 /* Wrappers to perform the full transfer. */
1990 /* For docs on target_read see target.h. */
1993 target_read (struct target_ops
*ops
,
1994 enum target_object object
,
1995 const char *annex
, gdb_byte
*buf
,
1996 ULONGEST offset
, LONGEST len
)
2000 while (xfered
< len
)
2002 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
2003 (gdb_byte
*) buf
+ xfered
,
2004 offset
+ xfered
, len
- xfered
);
2006 /* Call an observer, notifying them of the xfer progress? */
2017 /* Assuming that the entire [begin, end) range of memory cannot be
2018 read, try to read whatever subrange is possible to read.
2020 The function returns, in RESULT, either zero or one memory block.
2021 If there's a readable subrange at the beginning, it is completely
2022 read and returned. Any further readable subrange will not be read.
2023 Otherwise, if there's a readable subrange at the end, it will be
2024 completely read and returned. Any readable subranges before it
2025 (obviously, not starting at the beginning), will be ignored. In
2026 other cases -- either no readable subrange, or readable subrange(s)
2027 that is neither at the beginning, or end, nothing is returned.
2029 The purpose of this function is to handle a read across a boundary
2030 of accessible memory in a case when memory map is not available.
2031 The above restrictions are fine for this case, but will give
2032 incorrect results if the memory is 'patchy'. However, supporting
2033 'patchy' memory would require trying to read every single byte,
2034 and it seems unacceptable solution. Explicit memory map is
2035 recommended for this case -- and target_read_memory_robust will
2036 take care of reading multiple ranges then. */
2039 read_whatever_is_readable (struct target_ops
*ops
,
2040 ULONGEST begin
, ULONGEST end
,
2041 VEC(memory_read_result_s
) **result
)
2043 gdb_byte
*buf
= xmalloc (end
- begin
);
2044 ULONGEST current_begin
= begin
;
2045 ULONGEST current_end
= end
;
2047 memory_read_result_s r
;
2049 /* If we previously failed to read 1 byte, nothing can be done here. */
2050 if (end
- begin
<= 1)
2056 /* Check that either first or the last byte is readable, and give up
2057 if not. This heuristic is meant to permit reading accessible memory
2058 at the boundary of accessible region. */
2059 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2060 buf
, begin
, 1) == 1)
2065 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2066 buf
+ (end
-begin
) - 1, end
- 1, 1) == 1)
2077 /* Loop invariant is that the [current_begin, current_end) was previously
2078 found to be not readable as a whole.
2080 Note loop condition -- if the range has 1 byte, we can't divide the range
2081 so there's no point trying further. */
2082 while (current_end
- current_begin
> 1)
2084 ULONGEST first_half_begin
, first_half_end
;
2085 ULONGEST second_half_begin
, second_half_end
;
2087 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2091 first_half_begin
= current_begin
;
2092 first_half_end
= middle
;
2093 second_half_begin
= middle
;
2094 second_half_end
= current_end
;
2098 first_half_begin
= middle
;
2099 first_half_end
= current_end
;
2100 second_half_begin
= current_begin
;
2101 second_half_end
= middle
;
2104 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2105 buf
+ (first_half_begin
- begin
),
2107 first_half_end
- first_half_begin
);
2109 if (xfer
== first_half_end
- first_half_begin
)
2111 /* This half reads up fine. So, the error must be in the
2113 current_begin
= second_half_begin
;
2114 current_end
= second_half_end
;
2118 /* This half is not readable. Because we've tried one byte, we
2119 know some part of this half if actually redable. Go to the next
2120 iteration to divide again and try to read.
2122 We don't handle the other half, because this function only tries
2123 to read a single readable subrange. */
2124 current_begin
= first_half_begin
;
2125 current_end
= first_half_end
;
2131 /* The [begin, current_begin) range has been read. */
2133 r
.end
= current_begin
;
2138 /* The [current_end, end) range has been read. */
2139 LONGEST rlen
= end
- current_end
;
2141 r
.data
= xmalloc (rlen
);
2142 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2143 r
.begin
= current_end
;
2147 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2151 free_memory_read_result_vector (void *x
)
2153 VEC(memory_read_result_s
) *v
= x
;
2154 memory_read_result_s
*current
;
2157 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2159 xfree (current
->data
);
2161 VEC_free (memory_read_result_s
, v
);
2164 VEC(memory_read_result_s
) *
2165 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2167 VEC(memory_read_result_s
) *result
= 0;
2170 while (xfered
< len
)
2172 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2175 /* If there is no explicit region, a fake one should be created. */
2176 gdb_assert (region
);
2178 if (region
->hi
== 0)
2179 rlen
= len
- xfered
;
2181 rlen
= region
->hi
- offset
;
2183 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2185 /* Cannot read this region. Note that we can end up here only
2186 if the region is explicitly marked inaccessible, or
2187 'inaccessible-by-default' is in effect. */
2192 LONGEST to_read
= min (len
- xfered
, rlen
);
2193 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2195 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2196 (gdb_byte
*) buffer
,
2197 offset
+ xfered
, to_read
);
2198 /* Call an observer, notifying them of the xfer progress? */
2201 /* Got an error reading full chunk. See if maybe we can read
2204 read_whatever_is_readable (ops
, offset
+ xfered
,
2205 offset
+ xfered
+ to_read
, &result
);
2210 struct memory_read_result r
;
2212 r
.begin
= offset
+ xfered
;
2213 r
.end
= r
.begin
+ xfer
;
2214 VEC_safe_push (memory_read_result_s
, result
, &r
);
2224 /* An alternative to target_write with progress callbacks. */
2227 target_write_with_progress (struct target_ops
*ops
,
2228 enum target_object object
,
2229 const char *annex
, const gdb_byte
*buf
,
2230 ULONGEST offset
, LONGEST len
,
2231 void (*progress
) (ULONGEST
, void *), void *baton
)
2235 /* Give the progress callback a chance to set up. */
2237 (*progress
) (0, baton
);
2239 while (xfered
< len
)
2241 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
2242 (gdb_byte
*) buf
+ xfered
,
2243 offset
+ xfered
, len
- xfered
);
2251 (*progress
) (xfer
, baton
);
2259 /* For docs on target_write see target.h. */
2262 target_write (struct target_ops
*ops
,
2263 enum target_object object
,
2264 const char *annex
, const gdb_byte
*buf
,
2265 ULONGEST offset
, LONGEST len
)
2267 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2271 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2272 the size of the transferred data. PADDING additional bytes are
2273 available in *BUF_P. This is a helper function for
2274 target_read_alloc; see the declaration of that function for more
2278 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2279 const char *annex
, gdb_byte
**buf_p
, int padding
)
2281 size_t buf_alloc
, buf_pos
;
2285 /* This function does not have a length parameter; it reads the
2286 entire OBJECT). Also, it doesn't support objects fetched partly
2287 from one target and partly from another (in a different stratum,
2288 e.g. a core file and an executable). Both reasons make it
2289 unsuitable for reading memory. */
2290 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2292 /* Start by reading up to 4K at a time. The target will throttle
2293 this number down if necessary. */
2295 buf
= xmalloc (buf_alloc
);
2299 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2300 buf_pos
, buf_alloc
- buf_pos
- padding
);
2303 /* An error occurred. */
2309 /* Read all there was. */
2319 /* If the buffer is filling up, expand it. */
2320 if (buf_alloc
< buf_pos
* 2)
2323 buf
= xrealloc (buf
, buf_alloc
);
2330 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2331 the size of the transferred data. See the declaration in "target.h"
2332 function for more information about the return value. */
2335 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2336 const char *annex
, gdb_byte
**buf_p
)
2338 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2341 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2342 returned as a string, allocated using xmalloc. If an error occurs
2343 or the transfer is unsupported, NULL is returned. Empty objects
2344 are returned as allocated but empty strings. A warning is issued
2345 if the result contains any embedded NUL bytes. */
2348 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2352 LONGEST i
, transferred
;
2354 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2356 if (transferred
< 0)
2359 if (transferred
== 0)
2360 return xstrdup ("");
2362 buffer
[transferred
] = 0;
2364 /* Check for embedded NUL bytes; but allow trailing NULs. */
2365 for (i
= strlen (buffer
); i
< transferred
; i
++)
2368 warning (_("target object %d, annex %s, "
2369 "contained unexpected null characters"),
2370 (int) object
, annex
? annex
: "(none)");
2374 return (char *) buffer
;
2377 /* Memory transfer methods. */
2380 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2383 /* This method is used to read from an alternate, non-current
2384 target. This read must bypass the overlay support (as symbols
2385 don't match this target), and GDB's internal cache (wrong cache
2386 for this target). */
2387 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2389 memory_error (EIO
, addr
);
2393 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2394 int len
, enum bfd_endian byte_order
)
2396 gdb_byte buf
[sizeof (ULONGEST
)];
2398 gdb_assert (len
<= sizeof (buf
));
2399 get_target_memory (ops
, addr
, buf
, len
);
2400 return extract_unsigned_integer (buf
, len
, byte_order
);
2404 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2405 struct bp_target_info
*bp_tgt
)
2407 if (!may_insert_breakpoints
)
2409 warning (_("May not insert breakpoints"));
2413 return (*current_target
.to_insert_breakpoint
) (gdbarch
, bp_tgt
);
2417 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2418 struct bp_target_info
*bp_tgt
)
2420 /* This is kind of a weird case to handle, but the permission might
2421 have been changed after breakpoints were inserted - in which case
2422 we should just take the user literally and assume that any
2423 breakpoints should be left in place. */
2424 if (!may_insert_breakpoints
)
2426 warning (_("May not remove breakpoints"));
2430 return (*current_target
.to_remove_breakpoint
) (gdbarch
, bp_tgt
);
2434 target_info (char *args
, int from_tty
)
2436 struct target_ops
*t
;
2437 int has_all_mem
= 0;
2439 if (symfile_objfile
!= NULL
)
2440 printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile
->name
);
2442 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2444 if (!(*t
->to_has_memory
) (t
))
2447 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2450 printf_unfiltered (_("\tWhile running this, "
2451 "GDB does not access memory from...\n"));
2452 printf_unfiltered ("%s:\n", t
->to_longname
);
2453 (t
->to_files_info
) (t
);
2454 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2458 /* This function is called before any new inferior is created, e.g.
2459 by running a program, attaching, or connecting to a target.
2460 It cleans up any state from previous invocations which might
2461 change between runs. This is a subset of what target_preopen
2462 resets (things which might change between targets). */
2465 target_pre_inferior (int from_tty
)
2467 /* Clear out solib state. Otherwise the solib state of the previous
2468 inferior might have survived and is entirely wrong for the new
2469 target. This has been observed on GNU/Linux using glibc 2.3. How
2481 Cannot access memory at address 0xdeadbeef
2484 /* In some OSs, the shared library list is the same/global/shared
2485 across inferiors. If code is shared between processes, so are
2486 memory regions and features. */
2487 if (!gdbarch_has_global_solist (target_gdbarch
))
2489 no_shared_libraries (NULL
, from_tty
);
2491 invalidate_target_mem_regions ();
2493 target_clear_description ();
2497 /* Callback for iterate_over_inferiors. Gets rid of the given
2501 dispose_inferior (struct inferior
*inf
, void *args
)
2503 struct thread_info
*thread
;
2505 thread
= any_thread_of_process (inf
->pid
);
2508 switch_to_thread (thread
->ptid
);
2510 /* Core inferiors actually should be detached, not killed. */
2511 if (target_has_execution
)
2514 target_detach (NULL
, 0);
2520 /* This is to be called by the open routine before it does
2524 target_preopen (int from_tty
)
2528 if (have_inferiors ())
2531 || !have_live_inferiors ()
2532 || query (_("A program is being debugged already. Kill it? ")))
2533 iterate_over_inferiors (dispose_inferior
, NULL
);
2535 error (_("Program not killed."));
2538 /* Calling target_kill may remove the target from the stack. But if
2539 it doesn't (which seems like a win for UDI), remove it now. */
2540 /* Leave the exec target, though. The user may be switching from a
2541 live process to a core of the same program. */
2542 pop_all_targets_above (file_stratum
, 0);
2544 target_pre_inferior (from_tty
);
2547 /* Detach a target after doing deferred register stores. */
2550 target_detach (char *args
, int from_tty
)
2552 struct target_ops
* t
;
2554 if (gdbarch_has_global_breakpoints (target_gdbarch
))
2555 /* Don't remove global breakpoints here. They're removed on
2556 disconnection from the target. */
2559 /* If we're in breakpoints-always-inserted mode, have to remove
2560 them before detaching. */
2561 remove_breakpoints_pid (PIDGET (inferior_ptid
));
2563 prepare_for_detach ();
2565 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2567 if (t
->to_detach
!= NULL
)
2569 t
->to_detach (t
, args
, from_tty
);
2571 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2577 internal_error (__FILE__
, __LINE__
, _("could not find a target to detach"));
2581 target_disconnect (char *args
, int from_tty
)
2583 struct target_ops
*t
;
2585 /* If we're in breakpoints-always-inserted mode or if breakpoints
2586 are global across processes, we have to remove them before
2588 remove_breakpoints ();
2590 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2591 if (t
->to_disconnect
!= NULL
)
2594 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2596 t
->to_disconnect (t
, args
, from_tty
);
2604 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2606 struct target_ops
*t
;
2608 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2610 if (t
->to_wait
!= NULL
)
2612 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2616 char *status_string
;
2618 status_string
= target_waitstatus_to_string (status
);
2619 fprintf_unfiltered (gdb_stdlog
,
2620 "target_wait (%d, status) = %d, %s\n",
2621 PIDGET (ptid
), PIDGET (retval
),
2623 xfree (status_string
);
2634 target_pid_to_str (ptid_t ptid
)
2636 struct target_ops
*t
;
2638 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2640 if (t
->to_pid_to_str
!= NULL
)
2641 return (*t
->to_pid_to_str
) (t
, ptid
);
2644 return normal_pid_to_str (ptid
);
2648 target_thread_name (struct thread_info
*info
)
2650 struct target_ops
*t
;
2652 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2654 if (t
->to_thread_name
!= NULL
)
2655 return (*t
->to_thread_name
) (info
);
2662 target_resume (ptid_t ptid
, int step
, enum target_signal signal
)
2664 struct target_ops
*t
;
2666 target_dcache_invalidate ();
2668 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2670 if (t
->to_resume
!= NULL
)
2672 t
->to_resume (t
, ptid
, step
, signal
);
2674 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2676 step
? "step" : "continue",
2677 target_signal_to_name (signal
));
2679 registers_changed_ptid (ptid
);
2680 set_executing (ptid
, 1);
2681 set_running (ptid
, 1);
2682 clear_inline_frame_state (ptid
);
2691 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2693 struct target_ops
*t
;
2695 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2697 if (t
->to_pass_signals
!= NULL
)
2703 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2706 for (i
= 0; i
< numsigs
; i
++)
2707 if (pass_signals
[i
])
2708 fprintf_unfiltered (gdb_stdlog
, " %s",
2709 target_signal_to_name (i
));
2711 fprintf_unfiltered (gdb_stdlog
, " })\n");
2714 (*t
->to_pass_signals
) (numsigs
, pass_signals
);
2720 /* Look through the list of possible targets for a target that can
2724 target_follow_fork (int follow_child
)
2726 struct target_ops
*t
;
2728 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2730 if (t
->to_follow_fork
!= NULL
)
2732 int retval
= t
->to_follow_fork (t
, follow_child
);
2735 fprintf_unfiltered (gdb_stdlog
, "target_follow_fork (%d) = %d\n",
2736 follow_child
, retval
);
2741 /* Some target returned a fork event, but did not know how to follow it. */
2742 internal_error (__FILE__
, __LINE__
,
2743 _("could not find a target to follow fork"));
2747 target_mourn_inferior (void)
2749 struct target_ops
*t
;
2751 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2753 if (t
->to_mourn_inferior
!= NULL
)
2755 t
->to_mourn_inferior (t
);
2757 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2759 /* We no longer need to keep handles on any of the object files.
2760 Make sure to release them to avoid unnecessarily locking any
2761 of them while we're not actually debugging. */
2762 bfd_cache_close_all ();
2768 internal_error (__FILE__
, __LINE__
,
2769 _("could not find a target to follow mourn inferior"));
2772 /* Look for a target which can describe architectural features, starting
2773 from TARGET. If we find one, return its description. */
2775 const struct target_desc
*
2776 target_read_description (struct target_ops
*target
)
2778 struct target_ops
*t
;
2780 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2781 if (t
->to_read_description
!= NULL
)
2783 const struct target_desc
*tdesc
;
2785 tdesc
= t
->to_read_description (t
);
2793 /* The default implementation of to_search_memory.
2794 This implements a basic search of memory, reading target memory and
2795 performing the search here (as opposed to performing the search in on the
2796 target side with, for example, gdbserver). */
2799 simple_search_memory (struct target_ops
*ops
,
2800 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2801 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2802 CORE_ADDR
*found_addrp
)
2804 /* NOTE: also defined in find.c testcase. */
2805 #define SEARCH_CHUNK_SIZE 16000
2806 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2807 /* Buffer to hold memory contents for searching. */
2808 gdb_byte
*search_buf
;
2809 unsigned search_buf_size
;
2810 struct cleanup
*old_cleanups
;
2812 search_buf_size
= chunk_size
+ pattern_len
- 1;
2814 /* No point in trying to allocate a buffer larger than the search space. */
2815 if (search_space_len
< search_buf_size
)
2816 search_buf_size
= search_space_len
;
2818 search_buf
= malloc (search_buf_size
);
2819 if (search_buf
== NULL
)
2820 error (_("Unable to allocate memory to perform the search."));
2821 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2823 /* Prime the search buffer. */
2825 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2826 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2828 warning (_("Unable to access target memory at %s, halting search."),
2829 hex_string (start_addr
));
2830 do_cleanups (old_cleanups
);
2834 /* Perform the search.
2836 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2837 When we've scanned N bytes we copy the trailing bytes to the start and
2838 read in another N bytes. */
2840 while (search_space_len
>= pattern_len
)
2842 gdb_byte
*found_ptr
;
2843 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2845 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2846 pattern
, pattern_len
);
2848 if (found_ptr
!= NULL
)
2850 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2852 *found_addrp
= found_addr
;
2853 do_cleanups (old_cleanups
);
2857 /* Not found in this chunk, skip to next chunk. */
2859 /* Don't let search_space_len wrap here, it's unsigned. */
2860 if (search_space_len
>= chunk_size
)
2861 search_space_len
-= chunk_size
;
2863 search_space_len
= 0;
2865 if (search_space_len
>= pattern_len
)
2867 unsigned keep_len
= search_buf_size
- chunk_size
;
2868 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2871 /* Copy the trailing part of the previous iteration to the front
2872 of the buffer for the next iteration. */
2873 gdb_assert (keep_len
== pattern_len
- 1);
2874 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2876 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2878 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2879 search_buf
+ keep_len
, read_addr
,
2880 nr_to_read
) != nr_to_read
)
2882 warning (_("Unable to access target "
2883 "memory at %s, halting search."),
2884 hex_string (read_addr
));
2885 do_cleanups (old_cleanups
);
2889 start_addr
+= chunk_size
;
2895 do_cleanups (old_cleanups
);
2899 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2900 sequence of bytes in PATTERN with length PATTERN_LEN.
2902 The result is 1 if found, 0 if not found, and -1 if there was an error
2903 requiring halting of the search (e.g. memory read error).
2904 If the pattern is found the address is recorded in FOUND_ADDRP. */
2907 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2908 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2909 CORE_ADDR
*found_addrp
)
2911 struct target_ops
*t
;
2914 /* We don't use INHERIT to set current_target.to_search_memory,
2915 so we have to scan the target stack and handle targetdebug
2919 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2920 hex_string (start_addr
));
2922 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2923 if (t
->to_search_memory
!= NULL
)
2928 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2929 pattern
, pattern_len
, found_addrp
);
2933 /* If a special version of to_search_memory isn't available, use the
2935 found
= simple_search_memory (current_target
.beneath
,
2936 start_addr
, search_space_len
,
2937 pattern
, pattern_len
, found_addrp
);
2941 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2946 /* Look through the currently pushed targets. If none of them will
2947 be able to restart the currently running process, issue an error
2951 target_require_runnable (void)
2953 struct target_ops
*t
;
2955 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2957 /* If this target knows how to create a new program, then
2958 assume we will still be able to after killing the current
2959 one. Either killing and mourning will not pop T, or else
2960 find_default_run_target will find it again. */
2961 if (t
->to_create_inferior
!= NULL
)
2964 /* Do not worry about thread_stratum targets that can not
2965 create inferiors. Assume they will be pushed again if
2966 necessary, and continue to the process_stratum. */
2967 if (t
->to_stratum
== thread_stratum
2968 || t
->to_stratum
== arch_stratum
)
2971 error (_("The \"%s\" target does not support \"run\". "
2972 "Try \"help target\" or \"continue\"."),
2976 /* This function is only called if the target is running. In that
2977 case there should have been a process_stratum target and it
2978 should either know how to create inferiors, or not... */
2979 internal_error (__FILE__
, __LINE__
, _("No targets found"));
2982 /* Look through the list of possible targets for a target that can
2983 execute a run or attach command without any other data. This is
2984 used to locate the default process stratum.
2986 If DO_MESG is not NULL, the result is always valid (error() is
2987 called for errors); else, return NULL on error. */
2989 static struct target_ops
*
2990 find_default_run_target (char *do_mesg
)
2992 struct target_ops
**t
;
2993 struct target_ops
*runable
= NULL
;
2998 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3001 if ((*t
)->to_can_run
&& target_can_run (*t
))
3011 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3020 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3022 struct target_ops
*t
;
3024 t
= find_default_run_target ("attach");
3025 (t
->to_attach
) (t
, args
, from_tty
);
3030 find_default_create_inferior (struct target_ops
*ops
,
3031 char *exec_file
, char *allargs
, char **env
,
3034 struct target_ops
*t
;
3036 t
= find_default_run_target ("run");
3037 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3042 find_default_can_async_p (void)
3044 struct target_ops
*t
;
3046 /* This may be called before the target is pushed on the stack;
3047 look for the default process stratum. If there's none, gdb isn't
3048 configured with a native debugger, and target remote isn't
3050 t
= find_default_run_target (NULL
);
3051 if (t
&& t
->to_can_async_p
)
3052 return (t
->to_can_async_p
) ();
3057 find_default_is_async_p (void)
3059 struct target_ops
*t
;
3061 /* This may be called before the target is pushed on the stack;
3062 look for the default process stratum. If there's none, gdb isn't
3063 configured with a native debugger, and target remote isn't
3065 t
= find_default_run_target (NULL
);
3066 if (t
&& t
->to_is_async_p
)
3067 return (t
->to_is_async_p
) ();
3072 find_default_supports_non_stop (void)
3074 struct target_ops
*t
;
3076 t
= find_default_run_target (NULL
);
3077 if (t
&& t
->to_supports_non_stop
)
3078 return (t
->to_supports_non_stop
) ();
3083 target_supports_non_stop (void)
3085 struct target_ops
*t
;
3087 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3088 if (t
->to_supports_non_stop
)
3089 return t
->to_supports_non_stop ();
3094 /* Implement the "info proc" command. */
3097 target_info_proc (char *args
, enum info_proc_what what
)
3099 struct target_ops
*t
;
3101 /* If we're already connected to something that can get us OS
3102 related data, use it. Otherwise, try using the native
3104 if (current_target
.to_stratum
>= process_stratum
)
3105 t
= current_target
.beneath
;
3107 t
= find_default_run_target (NULL
);
3109 for (; t
!= NULL
; t
= t
->beneath
)
3111 if (t
->to_info_proc
!= NULL
)
3113 t
->to_info_proc (t
, args
, what
);
3116 fprintf_unfiltered (gdb_stdlog
,
3117 "target_info_proc (\"%s\", %d)\n", args
, what
);
3123 error (_("Not supported on this target."));
3127 find_default_supports_disable_randomization (void)
3129 struct target_ops
*t
;
3131 t
= find_default_run_target (NULL
);
3132 if (t
&& t
->to_supports_disable_randomization
)
3133 return (t
->to_supports_disable_randomization
) ();
3138 target_supports_disable_randomization (void)
3140 struct target_ops
*t
;
3142 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3143 if (t
->to_supports_disable_randomization
)
3144 return t
->to_supports_disable_randomization ();
3150 target_get_osdata (const char *type
)
3152 struct target_ops
*t
;
3154 /* If we're already connected to something that can get us OS
3155 related data, use it. Otherwise, try using the native
3157 if (current_target
.to_stratum
>= process_stratum
)
3158 t
= current_target
.beneath
;
3160 t
= find_default_run_target ("get OS data");
3165 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3168 /* Determine the current address space of thread PTID. */
3170 struct address_space
*
3171 target_thread_address_space (ptid_t ptid
)
3173 struct address_space
*aspace
;
3174 struct inferior
*inf
;
3175 struct target_ops
*t
;
3177 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3179 if (t
->to_thread_address_space
!= NULL
)
3181 aspace
= t
->to_thread_address_space (t
, ptid
);
3182 gdb_assert (aspace
);
3185 fprintf_unfiltered (gdb_stdlog
,
3186 "target_thread_address_space (%s) = %d\n",
3187 target_pid_to_str (ptid
),
3188 address_space_num (aspace
));
3193 /* Fall-back to the "main" address space of the inferior. */
3194 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3196 if (inf
== NULL
|| inf
->aspace
== NULL
)
3197 internal_error (__FILE__
, __LINE__
,
3198 _("Can't determine the current "
3199 "address space of thread %s\n"),
3200 target_pid_to_str (ptid
));
3206 /* Target file operations. */
3208 static struct target_ops
*
3209 default_fileio_target (void)
3211 /* If we're already connected to something that can perform
3212 file I/O, use it. Otherwise, try using the native target. */
3213 if (current_target
.to_stratum
>= process_stratum
)
3214 return current_target
.beneath
;
3216 return find_default_run_target ("file I/O");
3219 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3220 target file descriptor, or -1 if an error occurs (and set
3223 target_fileio_open (const char *filename
, int flags
, int mode
,
3226 struct target_ops
*t
;
3228 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3230 if (t
->to_fileio_open
!= NULL
)
3232 int fd
= t
->to_fileio_open (filename
, flags
, mode
, target_errno
);
3235 fprintf_unfiltered (gdb_stdlog
,
3236 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3237 filename
, flags
, mode
,
3238 fd
, fd
!= -1 ? 0 : *target_errno
);
3243 *target_errno
= FILEIO_ENOSYS
;
3247 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3248 Return the number of bytes written, or -1 if an error occurs
3249 (and set *TARGET_ERRNO). */
3251 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3252 ULONGEST offset
, int *target_errno
)
3254 struct target_ops
*t
;
3256 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3258 if (t
->to_fileio_pwrite
!= NULL
)
3260 int ret
= t
->to_fileio_pwrite (fd
, write_buf
, len
, offset
,
3264 fprintf_unfiltered (gdb_stdlog
,
3265 "target_fileio_pwrite (%d,...,%d,%s) "
3267 fd
, len
, pulongest (offset
),
3268 ret
, ret
!= -1 ? 0 : *target_errno
);
3273 *target_errno
= FILEIO_ENOSYS
;
3277 /* Read up to LEN bytes FD on the target into READ_BUF.
3278 Return the number of bytes read, or -1 if an error occurs
3279 (and set *TARGET_ERRNO). */
3281 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3282 ULONGEST offset
, int *target_errno
)
3284 struct target_ops
*t
;
3286 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3288 if (t
->to_fileio_pread
!= NULL
)
3290 int ret
= t
->to_fileio_pread (fd
, read_buf
, len
, offset
,
3294 fprintf_unfiltered (gdb_stdlog
,
3295 "target_fileio_pread (%d,...,%d,%s) "
3297 fd
, len
, pulongest (offset
),
3298 ret
, ret
!= -1 ? 0 : *target_errno
);
3303 *target_errno
= FILEIO_ENOSYS
;
3307 /* Close FD on the target. Return 0, or -1 if an error occurs
3308 (and set *TARGET_ERRNO). */
3310 target_fileio_close (int fd
, int *target_errno
)
3312 struct target_ops
*t
;
3314 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3316 if (t
->to_fileio_close
!= NULL
)
3318 int ret
= t
->to_fileio_close (fd
, target_errno
);
3321 fprintf_unfiltered (gdb_stdlog
,
3322 "target_fileio_close (%d) = %d (%d)\n",
3323 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3328 *target_errno
= FILEIO_ENOSYS
;
3332 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3333 occurs (and set *TARGET_ERRNO). */
3335 target_fileio_unlink (const char *filename
, int *target_errno
)
3337 struct target_ops
*t
;
3339 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3341 if (t
->to_fileio_unlink
!= NULL
)
3343 int ret
= t
->to_fileio_unlink (filename
, target_errno
);
3346 fprintf_unfiltered (gdb_stdlog
,
3347 "target_fileio_unlink (%s) = %d (%d)\n",
3348 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3353 *target_errno
= FILEIO_ENOSYS
;
3357 /* Read value of symbolic link FILENAME on the target. Return a
3358 null-terminated string allocated via xmalloc, or NULL if an error
3359 occurs (and set *TARGET_ERRNO). */
3361 target_fileio_readlink (const char *filename
, int *target_errno
)
3363 struct target_ops
*t
;
3365 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3367 if (t
->to_fileio_readlink
!= NULL
)
3369 char *ret
= t
->to_fileio_readlink (filename
, target_errno
);
3372 fprintf_unfiltered (gdb_stdlog
,
3373 "target_fileio_readlink (%s) = %s (%d)\n",
3374 filename
, ret
? ret
: "(nil)",
3375 ret
? 0 : *target_errno
);
3380 *target_errno
= FILEIO_ENOSYS
;
3385 target_fileio_close_cleanup (void *opaque
)
3387 int fd
= *(int *) opaque
;
3390 target_fileio_close (fd
, &target_errno
);
3393 /* Read target file FILENAME. Store the result in *BUF_P and
3394 return the size of the transferred data. PADDING additional bytes are
3395 available in *BUF_P. This is a helper function for
3396 target_fileio_read_alloc; see the declaration of that function for more
3400 target_fileio_read_alloc_1 (const char *filename
,
3401 gdb_byte
**buf_p
, int padding
)
3403 struct cleanup
*close_cleanup
;
3404 size_t buf_alloc
, buf_pos
;
3410 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3414 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3416 /* Start by reading up to 4K at a time. The target will throttle
3417 this number down if necessary. */
3419 buf
= xmalloc (buf_alloc
);
3423 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3424 buf_alloc
- buf_pos
- padding
, buf_pos
,
3428 /* An error occurred. */
3429 do_cleanups (close_cleanup
);
3435 /* Read all there was. */
3436 do_cleanups (close_cleanup
);
3446 /* If the buffer is filling up, expand it. */
3447 if (buf_alloc
< buf_pos
* 2)
3450 buf
= xrealloc (buf
, buf_alloc
);
3457 /* Read target file FILENAME. Store the result in *BUF_P and return
3458 the size of the transferred data. See the declaration in "target.h"
3459 function for more information about the return value. */
3462 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3464 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3467 /* Read target file FILENAME. The result is NUL-terminated and
3468 returned as a string, allocated using xmalloc. If an error occurs
3469 or the transfer is unsupported, NULL is returned. Empty objects
3470 are returned as allocated but empty strings. A warning is issued
3471 if the result contains any embedded NUL bytes. */
3474 target_fileio_read_stralloc (const char *filename
)
3477 LONGEST i
, transferred
;
3479 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3481 if (transferred
< 0)
3484 if (transferred
== 0)
3485 return xstrdup ("");
3487 buffer
[transferred
] = 0;
3489 /* Check for embedded NUL bytes; but allow trailing NULs. */
3490 for (i
= strlen (buffer
); i
< transferred
; i
++)
3493 warning (_("target file %s "
3494 "contained unexpected null characters"),
3499 return (char *) buffer
;
3504 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3506 return (len
<= gdbarch_ptr_bit (target_gdbarch
) / TARGET_CHAR_BIT
);
3510 default_watchpoint_addr_within_range (struct target_ops
*target
,
3512 CORE_ADDR start
, int length
)
3514 return addr
>= start
&& addr
< start
+ length
;
3517 static struct gdbarch
*
3518 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3520 return target_gdbarch
;
3536 return_minus_one (void)
3541 /* Find a single runnable target in the stack and return it. If for
3542 some reason there is more than one, return NULL. */
3545 find_run_target (void)
3547 struct target_ops
**t
;
3548 struct target_ops
*runable
= NULL
;
3553 for (t
= target_structs
; t
< target_structs
+ target_struct_size
; ++t
)
3555 if ((*t
)->to_can_run
&& target_can_run (*t
))
3562 return (count
== 1 ? runable
: NULL
);
3566 * Find the next target down the stack from the specified target.
3570 find_target_beneath (struct target_ops
*t
)
3576 /* The inferior process has died. Long live the inferior! */
3579 generic_mourn_inferior (void)
3583 ptid
= inferior_ptid
;
3584 inferior_ptid
= null_ptid
;
3586 /* Mark breakpoints uninserted in case something tries to delete a
3587 breakpoint while we delete the inferior's threads (which would
3588 fail, since the inferior is long gone). */
3589 mark_breakpoints_out ();
3591 if (!ptid_equal (ptid
, null_ptid
))
3593 int pid
= ptid_get_pid (ptid
);
3594 exit_inferior (pid
);
3597 /* Note this wipes step-resume breakpoints, so needs to be done
3598 after exit_inferior, which ends up referencing the step-resume
3599 breakpoints through clear_thread_inferior_resources. */
3600 breakpoint_init_inferior (inf_exited
);
3602 registers_changed ();
3604 reopen_exec_file ();
3605 reinit_frame_cache ();
3607 if (deprecated_detach_hook
)
3608 deprecated_detach_hook ();
3611 /* Helper function for child_wait and the derivatives of child_wait.
3612 HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
3613 translation of that in OURSTATUS. */
3615 store_waitstatus (struct target_waitstatus
*ourstatus
, int hoststatus
)
3617 if (WIFEXITED (hoststatus
))
3619 ourstatus
->kind
= TARGET_WAITKIND_EXITED
;
3620 ourstatus
->value
.integer
= WEXITSTATUS (hoststatus
);
3622 else if (!WIFSTOPPED (hoststatus
))
3624 ourstatus
->kind
= TARGET_WAITKIND_SIGNALLED
;
3625 ourstatus
->value
.sig
= target_signal_from_host (WTERMSIG (hoststatus
));
3629 ourstatus
->kind
= TARGET_WAITKIND_STOPPED
;
3630 ourstatus
->value
.sig
= target_signal_from_host (WSTOPSIG (hoststatus
));
3634 /* Convert a normal process ID to a string. Returns the string in a
3638 normal_pid_to_str (ptid_t ptid
)
3640 static char buf
[32];
3642 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3647 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3649 return normal_pid_to_str (ptid
);
3652 /* Error-catcher for target_find_memory_regions. */
3654 dummy_find_memory_regions (find_memory_region_ftype ignore1
, void *ignore2
)
3656 error (_("Command not implemented for this target."));
3660 /* Error-catcher for target_make_corefile_notes. */
3662 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
3664 error (_("Command not implemented for this target."));
3668 /* Error-catcher for target_get_bookmark. */
3670 dummy_get_bookmark (char *ignore1
, int ignore2
)
3676 /* Error-catcher for target_goto_bookmark. */
3678 dummy_goto_bookmark (gdb_byte
*ignore
, int from_tty
)
3683 /* Set up the handful of non-empty slots needed by the dummy target
3687 init_dummy_target (void)
3689 dummy_target
.to_shortname
= "None";
3690 dummy_target
.to_longname
= "None";
3691 dummy_target
.to_doc
= "";
3692 dummy_target
.to_attach
= find_default_attach
;
3693 dummy_target
.to_detach
=
3694 (void (*)(struct target_ops
*, char *, int))target_ignore
;
3695 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3696 dummy_target
.to_can_async_p
= find_default_can_async_p
;
3697 dummy_target
.to_is_async_p
= find_default_is_async_p
;
3698 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3699 dummy_target
.to_supports_disable_randomization
3700 = find_default_supports_disable_randomization
;
3701 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3702 dummy_target
.to_stratum
= dummy_stratum
;
3703 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
3704 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
3705 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
3706 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
3707 dummy_target
.to_xfer_partial
= default_xfer_partial
;
3708 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3709 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3710 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3711 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3712 dummy_target
.to_has_execution
3713 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3714 dummy_target
.to_stopped_by_watchpoint
= return_zero
;
3715 dummy_target
.to_stopped_data_address
=
3716 (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
;
3717 dummy_target
.to_magic
= OPS_MAGIC
;
3721 debug_to_open (char *args
, int from_tty
)
3723 debug_target
.to_open (args
, from_tty
);
3725 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3729 target_close (struct target_ops
*targ
, int quitting
)
3731 if (targ
->to_xclose
!= NULL
)
3732 targ
->to_xclose (targ
, quitting
);
3733 else if (targ
->to_close
!= NULL
)
3734 targ
->to_close (quitting
);
3737 fprintf_unfiltered (gdb_stdlog
, "target_close (%d)\n", quitting
);
3741 target_attach (char *args
, int from_tty
)
3743 struct target_ops
*t
;
3745 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3747 if (t
->to_attach
!= NULL
)
3749 t
->to_attach (t
, args
, from_tty
);
3751 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3757 internal_error (__FILE__
, __LINE__
,
3758 _("could not find a target to attach"));
3762 target_thread_alive (ptid_t ptid
)
3764 struct target_ops
*t
;
3766 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3768 if (t
->to_thread_alive
!= NULL
)
3772 retval
= t
->to_thread_alive (t
, ptid
);
3774 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3775 PIDGET (ptid
), retval
);
3785 target_find_new_threads (void)
3787 struct target_ops
*t
;
3789 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3791 if (t
->to_find_new_threads
!= NULL
)
3793 t
->to_find_new_threads (t
);
3795 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3803 target_stop (ptid_t ptid
)
3807 warning (_("May not interrupt or stop the target, ignoring attempt"));
3811 (*current_target
.to_stop
) (ptid
);
3815 debug_to_post_attach (int pid
)
3817 debug_target
.to_post_attach (pid
);
3819 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3822 /* Return a pretty printed form of target_waitstatus.
3823 Space for the result is malloc'd, caller must free. */
3826 target_waitstatus_to_string (const struct target_waitstatus
*ws
)
3828 const char *kind_str
= "status->kind = ";
3832 case TARGET_WAITKIND_EXITED
:
3833 return xstrprintf ("%sexited, status = %d",
3834 kind_str
, ws
->value
.integer
);
3835 case TARGET_WAITKIND_STOPPED
:
3836 return xstrprintf ("%sstopped, signal = %s",
3837 kind_str
, target_signal_to_name (ws
->value
.sig
));
3838 case TARGET_WAITKIND_SIGNALLED
:
3839 return xstrprintf ("%ssignalled, signal = %s",
3840 kind_str
, target_signal_to_name (ws
->value
.sig
));
3841 case TARGET_WAITKIND_LOADED
:
3842 return xstrprintf ("%sloaded", kind_str
);
3843 case TARGET_WAITKIND_FORKED
:
3844 return xstrprintf ("%sforked", kind_str
);
3845 case TARGET_WAITKIND_VFORKED
:
3846 return xstrprintf ("%svforked", kind_str
);
3847 case TARGET_WAITKIND_EXECD
:
3848 return xstrprintf ("%sexecd", kind_str
);
3849 case TARGET_WAITKIND_SYSCALL_ENTRY
:
3850 return xstrprintf ("%sentered syscall", kind_str
);
3851 case TARGET_WAITKIND_SYSCALL_RETURN
:
3852 return xstrprintf ("%sexited syscall", kind_str
);
3853 case TARGET_WAITKIND_SPURIOUS
:
3854 return xstrprintf ("%sspurious", kind_str
);
3855 case TARGET_WAITKIND_IGNORE
:
3856 return xstrprintf ("%signore", kind_str
);
3857 case TARGET_WAITKIND_NO_HISTORY
:
3858 return xstrprintf ("%sno-history", kind_str
);
3859 case TARGET_WAITKIND_NO_RESUMED
:
3860 return xstrprintf ("%sno-resumed", kind_str
);
3862 return xstrprintf ("%sunknown???", kind_str
);
3867 debug_print_register (const char * func
,
3868 struct regcache
*regcache
, int regno
)
3870 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3872 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3873 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3874 && gdbarch_register_name (gdbarch
, regno
) != NULL
3875 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3876 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3877 gdbarch_register_name (gdbarch
, regno
));
3879 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3880 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3882 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3883 int i
, size
= register_size (gdbarch
, regno
);
3884 unsigned char buf
[MAX_REGISTER_SIZE
];
3886 regcache_raw_collect (regcache
, regno
, buf
);
3887 fprintf_unfiltered (gdb_stdlog
, " = ");
3888 for (i
= 0; i
< size
; i
++)
3890 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3892 if (size
<= sizeof (LONGEST
))
3894 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3896 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3897 core_addr_to_string_nz (val
), plongest (val
));
3900 fprintf_unfiltered (gdb_stdlog
, "\n");
3904 target_fetch_registers (struct regcache
*regcache
, int regno
)
3906 struct target_ops
*t
;
3908 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3910 if (t
->to_fetch_registers
!= NULL
)
3912 t
->to_fetch_registers (t
, regcache
, regno
);
3914 debug_print_register ("target_fetch_registers", regcache
, regno
);
3921 target_store_registers (struct regcache
*regcache
, int regno
)
3923 struct target_ops
*t
;
3925 if (!may_write_registers
)
3926 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3928 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3930 if (t
->to_store_registers
!= NULL
)
3932 t
->to_store_registers (t
, regcache
, regno
);
3935 debug_print_register ("target_store_registers", regcache
, regno
);
3945 target_core_of_thread (ptid_t ptid
)
3947 struct target_ops
*t
;
3949 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3951 if (t
->to_core_of_thread
!= NULL
)
3953 int retval
= t
->to_core_of_thread (t
, ptid
);
3956 fprintf_unfiltered (gdb_stdlog
,
3957 "target_core_of_thread (%d) = %d\n",
3958 PIDGET (ptid
), retval
);
3967 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3969 struct target_ops
*t
;
3971 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3973 if (t
->to_verify_memory
!= NULL
)
3975 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3978 fprintf_unfiltered (gdb_stdlog
,
3979 "target_verify_memory (%s, %s) = %d\n",
3980 paddress (target_gdbarch
, memaddr
),
3990 /* The documentation for this function is in its prototype declaration in
3994 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3996 struct target_ops
*t
;
3998 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3999 if (t
->to_insert_mask_watchpoint
!= NULL
)
4003 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
4006 fprintf_unfiltered (gdb_stdlog
, "\
4007 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
4008 core_addr_to_string (addr
),
4009 core_addr_to_string (mask
), rw
, ret
);
4017 /* The documentation for this function is in its prototype declaration in
4021 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4023 struct target_ops
*t
;
4025 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4026 if (t
->to_remove_mask_watchpoint
!= NULL
)
4030 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
4033 fprintf_unfiltered (gdb_stdlog
, "\
4034 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
4035 core_addr_to_string (addr
),
4036 core_addr_to_string (mask
), rw
, ret
);
4044 /* The documentation for this function is in its prototype declaration
4048 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4050 struct target_ops
*t
;
4052 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4053 if (t
->to_masked_watch_num_registers
!= NULL
)
4054 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4059 /* The documentation for this function is in its prototype declaration
4063 target_ranged_break_num_registers (void)
4065 struct target_ops
*t
;
4067 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4068 if (t
->to_ranged_break_num_registers
!= NULL
)
4069 return t
->to_ranged_break_num_registers (t
);
4075 debug_to_prepare_to_store (struct regcache
*regcache
)
4077 debug_target
.to_prepare_to_store (regcache
);
4079 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4083 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4084 int write
, struct mem_attrib
*attrib
,
4085 struct target_ops
*target
)
4089 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4092 fprintf_unfiltered (gdb_stdlog
,
4093 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4094 paddress (target_gdbarch
, memaddr
), len
,
4095 write
? "write" : "read", retval
);
4101 fputs_unfiltered (", bytes =", gdb_stdlog
);
4102 for (i
= 0; i
< retval
; i
++)
4104 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4106 if (targetdebug
< 2 && i
> 0)
4108 fprintf_unfiltered (gdb_stdlog
, " ...");
4111 fprintf_unfiltered (gdb_stdlog
, "\n");
4114 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4118 fputc_unfiltered ('\n', gdb_stdlog
);
4124 debug_to_files_info (struct target_ops
*target
)
4126 debug_target
.to_files_info (target
);
4128 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4132 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
4133 struct bp_target_info
*bp_tgt
)
4137 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
4139 fprintf_unfiltered (gdb_stdlog
,
4140 "target_insert_breakpoint (%s, xxx) = %ld\n",
4141 core_addr_to_string (bp_tgt
->placed_address
),
4142 (unsigned long) retval
);
4147 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
4148 struct bp_target_info
*bp_tgt
)
4152 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
4154 fprintf_unfiltered (gdb_stdlog
,
4155 "target_remove_breakpoint (%s, xxx) = %ld\n",
4156 core_addr_to_string (bp_tgt
->placed_address
),
4157 (unsigned long) retval
);
4162 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
4166 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
4168 fprintf_unfiltered (gdb_stdlog
,
4169 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4170 (unsigned long) type
,
4171 (unsigned long) cnt
,
4172 (unsigned long) from_tty
,
4173 (unsigned long) retval
);
4178 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
4182 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
4184 fprintf_unfiltered (gdb_stdlog
,
4185 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4186 core_addr_to_string (addr
), (unsigned long) len
,
4187 core_addr_to_string (retval
));
4192 debug_to_can_accel_watchpoint_condition (CORE_ADDR addr
, int len
, int rw
,
4193 struct expression
*cond
)
4197 retval
= debug_target
.to_can_accel_watchpoint_condition (addr
, len
,
4200 fprintf_unfiltered (gdb_stdlog
,
4201 "target_can_accel_watchpoint_condition "
4202 "(%s, %d, %d, %s) = %ld\n",
4203 core_addr_to_string (addr
), len
, rw
,
4204 host_address_to_string (cond
), (unsigned long) retval
);
4209 debug_to_stopped_by_watchpoint (void)
4213 retval
= debug_target
.to_stopped_by_watchpoint ();
4215 fprintf_unfiltered (gdb_stdlog
,
4216 "target_stopped_by_watchpoint () = %ld\n",
4217 (unsigned long) retval
);
4222 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4226 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4228 fprintf_unfiltered (gdb_stdlog
,
4229 "target_stopped_data_address ([%s]) = %ld\n",
4230 core_addr_to_string (*addr
),
4231 (unsigned long)retval
);
4236 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4238 CORE_ADDR start
, int length
)
4242 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4245 fprintf_filtered (gdb_stdlog
,
4246 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4247 core_addr_to_string (addr
), core_addr_to_string (start
),
4253 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
4254 struct bp_target_info
*bp_tgt
)
4258 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
4260 fprintf_unfiltered (gdb_stdlog
,
4261 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4262 core_addr_to_string (bp_tgt
->placed_address
),
4263 (unsigned long) retval
);
4268 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
4269 struct bp_target_info
*bp_tgt
)
4273 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
4275 fprintf_unfiltered (gdb_stdlog
,
4276 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4277 core_addr_to_string (bp_tgt
->placed_address
),
4278 (unsigned long) retval
);
4283 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
4284 struct expression
*cond
)
4288 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
, cond
);
4290 fprintf_unfiltered (gdb_stdlog
,
4291 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4292 core_addr_to_string (addr
), len
, type
,
4293 host_address_to_string (cond
), (unsigned long) retval
);
4298 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
4299 struct expression
*cond
)
4303 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
, cond
);
4305 fprintf_unfiltered (gdb_stdlog
,
4306 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4307 core_addr_to_string (addr
), len
, type
,
4308 host_address_to_string (cond
), (unsigned long) retval
);
4313 debug_to_terminal_init (void)
4315 debug_target
.to_terminal_init ();
4317 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4321 debug_to_terminal_inferior (void)
4323 debug_target
.to_terminal_inferior ();
4325 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4329 debug_to_terminal_ours_for_output (void)
4331 debug_target
.to_terminal_ours_for_output ();
4333 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4337 debug_to_terminal_ours (void)
4339 debug_target
.to_terminal_ours ();
4341 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4345 debug_to_terminal_save_ours (void)
4347 debug_target
.to_terminal_save_ours ();
4349 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4353 debug_to_terminal_info (char *arg
, int from_tty
)
4355 debug_target
.to_terminal_info (arg
, from_tty
);
4357 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4362 debug_to_load (char *args
, int from_tty
)
4364 debug_target
.to_load (args
, from_tty
);
4366 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4370 debug_to_post_startup_inferior (ptid_t ptid
)
4372 debug_target
.to_post_startup_inferior (ptid
);
4374 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4379 debug_to_insert_fork_catchpoint (int pid
)
4383 retval
= debug_target
.to_insert_fork_catchpoint (pid
);
4385 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4392 debug_to_remove_fork_catchpoint (int pid
)
4396 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
4398 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4405 debug_to_insert_vfork_catchpoint (int pid
)
4409 retval
= debug_target
.to_insert_vfork_catchpoint (pid
);
4411 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4418 debug_to_remove_vfork_catchpoint (int pid
)
4422 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
4424 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4431 debug_to_insert_exec_catchpoint (int pid
)
4435 retval
= debug_target
.to_insert_exec_catchpoint (pid
);
4437 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4444 debug_to_remove_exec_catchpoint (int pid
)
4448 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
4450 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4457 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
4461 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
4463 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4464 pid
, wait_status
, *exit_status
, has_exited
);
4470 debug_to_can_run (void)
4474 retval
= debug_target
.to_can_run ();
4476 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4481 static struct gdbarch
*
4482 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4484 struct gdbarch
*retval
;
4486 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4488 fprintf_unfiltered (gdb_stdlog
,
4489 "target_thread_architecture (%s) = %s [%s]\n",
4490 target_pid_to_str (ptid
),
4491 host_address_to_string (retval
),
4492 gdbarch_bfd_arch_info (retval
)->printable_name
);
4497 debug_to_stop (ptid_t ptid
)
4499 debug_target
.to_stop (ptid
);
4501 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4502 target_pid_to_str (ptid
));
4506 debug_to_rcmd (char *command
,
4507 struct ui_file
*outbuf
)
4509 debug_target
.to_rcmd (command
, outbuf
);
4510 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4514 debug_to_pid_to_exec_file (int pid
)
4518 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
4520 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4527 setup_target_debug (void)
4529 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4531 current_target
.to_open
= debug_to_open
;
4532 current_target
.to_post_attach
= debug_to_post_attach
;
4533 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4534 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4535 current_target
.to_files_info
= debug_to_files_info
;
4536 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4537 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4538 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4539 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4540 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4541 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4542 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4543 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4544 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4545 current_target
.to_watchpoint_addr_within_range
4546 = debug_to_watchpoint_addr_within_range
;
4547 current_target
.to_region_ok_for_hw_watchpoint
4548 = debug_to_region_ok_for_hw_watchpoint
;
4549 current_target
.to_can_accel_watchpoint_condition
4550 = debug_to_can_accel_watchpoint_condition
;
4551 current_target
.to_terminal_init
= debug_to_terminal_init
;
4552 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4553 current_target
.to_terminal_ours_for_output
4554 = debug_to_terminal_ours_for_output
;
4555 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4556 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4557 current_target
.to_terminal_info
= debug_to_terminal_info
;
4558 current_target
.to_load
= debug_to_load
;
4559 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4560 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4561 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4562 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4563 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4564 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4565 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4566 current_target
.to_has_exited
= debug_to_has_exited
;
4567 current_target
.to_can_run
= debug_to_can_run
;
4568 current_target
.to_stop
= debug_to_stop
;
4569 current_target
.to_rcmd
= debug_to_rcmd
;
4570 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4571 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4575 static char targ_desc
[] =
4576 "Names of targets and files being debugged.\nShows the entire \
4577 stack of targets currently in use (including the exec-file,\n\
4578 core-file, and process, if any), as well as the symbol file name.";
4581 do_monitor_command (char *cmd
,
4584 if ((current_target
.to_rcmd
4585 == (void (*) (char *, struct ui_file
*)) tcomplain
)
4586 || (current_target
.to_rcmd
== debug_to_rcmd
4587 && (debug_target
.to_rcmd
4588 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
4589 error (_("\"monitor\" command not supported by this target."));
4590 target_rcmd (cmd
, gdb_stdtarg
);
4593 /* Print the name of each layers of our target stack. */
4596 maintenance_print_target_stack (char *cmd
, int from_tty
)
4598 struct target_ops
*t
;
4600 printf_filtered (_("The current target stack is:\n"));
4602 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4604 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4608 /* Controls if async mode is permitted. */
4609 int target_async_permitted
= 0;
4611 /* The set command writes to this variable. If the inferior is
4612 executing, linux_nat_async_permitted is *not* updated. */
4613 static int target_async_permitted_1
= 0;
4616 set_maintenance_target_async_permitted (char *args
, int from_tty
,
4617 struct cmd_list_element
*c
)
4619 if (have_live_inferiors ())
4621 target_async_permitted_1
= target_async_permitted
;
4622 error (_("Cannot change this setting while the inferior is running."));
4625 target_async_permitted
= target_async_permitted_1
;
4629 show_maintenance_target_async_permitted (struct ui_file
*file
, int from_tty
,
4630 struct cmd_list_element
*c
,
4633 fprintf_filtered (file
,
4634 _("Controlling the inferior in "
4635 "asynchronous mode is %s.\n"), value
);
4638 /* Temporary copies of permission settings. */
4640 static int may_write_registers_1
= 1;
4641 static int may_write_memory_1
= 1;
4642 static int may_insert_breakpoints_1
= 1;
4643 static int may_insert_tracepoints_1
= 1;
4644 static int may_insert_fast_tracepoints_1
= 1;
4645 static int may_stop_1
= 1;
4647 /* Make the user-set values match the real values again. */
4650 update_target_permissions (void)
4652 may_write_registers_1
= may_write_registers
;
4653 may_write_memory_1
= may_write_memory
;
4654 may_insert_breakpoints_1
= may_insert_breakpoints
;
4655 may_insert_tracepoints_1
= may_insert_tracepoints
;
4656 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4657 may_stop_1
= may_stop
;
4660 /* The one function handles (most of) the permission flags in the same
4664 set_target_permissions (char *args
, int from_tty
,
4665 struct cmd_list_element
*c
)
4667 if (target_has_execution
)
4669 update_target_permissions ();
4670 error (_("Cannot change this setting while the inferior is running."));
4673 /* Make the real values match the user-changed values. */
4674 may_write_registers
= may_write_registers_1
;
4675 may_insert_breakpoints
= may_insert_breakpoints_1
;
4676 may_insert_tracepoints
= may_insert_tracepoints_1
;
4677 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4678 may_stop
= may_stop_1
;
4679 update_observer_mode ();
4682 /* Set memory write permission independently of observer mode. */
4685 set_write_memory_permission (char *args
, int from_tty
,
4686 struct cmd_list_element
*c
)
4688 /* Make the real values match the user-changed values. */
4689 may_write_memory
= may_write_memory_1
;
4690 update_observer_mode ();
4695 initialize_targets (void)
4697 init_dummy_target ();
4698 push_target (&dummy_target
);
4700 add_info ("target", target_info
, targ_desc
);
4701 add_info ("files", target_info
, targ_desc
);
4703 add_setshow_zinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
4704 Set target debugging."), _("\
4705 Show target debugging."), _("\
4706 When non-zero, target debugging is enabled. Higher numbers are more\n\
4707 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4711 &setdebuglist
, &showdebuglist
);
4713 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
4714 &trust_readonly
, _("\
4715 Set mode for reading from readonly sections."), _("\
4716 Show mode for reading from readonly sections."), _("\
4717 When this mode is on, memory reads from readonly sections (such as .text)\n\
4718 will be read from the object file instead of from the target. This will\n\
4719 result in significant performance improvement for remote targets."),
4721 show_trust_readonly
,
4722 &setlist
, &showlist
);
4724 add_com ("monitor", class_obscure
, do_monitor_command
,
4725 _("Send a command to the remote monitor (remote targets only)."));
4727 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
4728 _("Print the name of each layer of the internal target stack."),
4729 &maintenanceprintlist
);
4731 add_setshow_boolean_cmd ("target-async", no_class
,
4732 &target_async_permitted_1
, _("\
4733 Set whether gdb controls the inferior in asynchronous mode."), _("\
4734 Show whether gdb controls the inferior in asynchronous mode."), _("\
4735 Tells gdb whether to control the inferior in asynchronous mode."),
4736 set_maintenance_target_async_permitted
,
4737 show_maintenance_target_async_permitted
,
4741 add_setshow_boolean_cmd ("stack-cache", class_support
,
4742 &stack_cache_enabled_p_1
, _("\
4743 Set cache use for stack access."), _("\
4744 Show cache use for stack access."), _("\
4745 When on, use the data cache for all stack access, regardless of any\n\
4746 configured memory regions. This improves remote performance significantly.\n\
4747 By default, caching for stack access is on."),
4748 set_stack_cache_enabled_p
,
4749 show_stack_cache_enabled_p
,
4750 &setlist
, &showlist
);
4752 add_setshow_boolean_cmd ("may-write-registers", class_support
,
4753 &may_write_registers_1
, _("\
4754 Set permission to write into registers."), _("\
4755 Show permission to write into registers."), _("\
4756 When this permission is on, GDB may write into the target's registers.\n\
4757 Otherwise, any sort of write attempt will result in an error."),
4758 set_target_permissions
, NULL
,
4759 &setlist
, &showlist
);
4761 add_setshow_boolean_cmd ("may-write-memory", class_support
,
4762 &may_write_memory_1
, _("\
4763 Set permission to write into target memory."), _("\
4764 Show permission to write into target memory."), _("\
4765 When this permission is on, GDB may write into the target's memory.\n\
4766 Otherwise, any sort of write attempt will result in an error."),
4767 set_write_memory_permission
, NULL
,
4768 &setlist
, &showlist
);
4770 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
4771 &may_insert_breakpoints_1
, _("\
4772 Set permission to insert breakpoints in the target."), _("\
4773 Show permission to insert breakpoints in the target."), _("\
4774 When this permission is on, GDB may insert breakpoints in the program.\n\
4775 Otherwise, any sort of insertion attempt will result in an error."),
4776 set_target_permissions
, NULL
,
4777 &setlist
, &showlist
);
4779 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
4780 &may_insert_tracepoints_1
, _("\
4781 Set permission to insert tracepoints in the target."), _("\
4782 Show permission to insert tracepoints in the target."), _("\
4783 When this permission is on, GDB may insert tracepoints in the program.\n\
4784 Otherwise, any sort of insertion attempt will result in an error."),
4785 set_target_permissions
, NULL
,
4786 &setlist
, &showlist
);
4788 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
4789 &may_insert_fast_tracepoints_1
, _("\
4790 Set permission to insert fast tracepoints in the target."), _("\
4791 Show permission to insert fast tracepoints in the target."), _("\
4792 When this permission is on, GDB may insert fast tracepoints.\n\
4793 Otherwise, any sort of insertion attempt will result in an error."),
4794 set_target_permissions
, NULL
,
4795 &setlist
, &showlist
);
4797 add_setshow_boolean_cmd ("may-interrupt", class_support
,
4799 Set permission to interrupt or signal the target."), _("\
4800 Show permission to interrupt or signal the target."), _("\
4801 When this permission is on, GDB may interrupt/stop the target's execution.\n\
4802 Otherwise, any attempt to interrupt or stop will be ignored."),
4803 set_target_permissions
, NULL
,
4804 &setlist
, &showlist
);
4807 target_dcache
= dcache_init ();