1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2013 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"
35 #include "gdb_assert.h"
37 #include "exceptions.h"
38 #include "target-descriptions.h"
39 #include "gdbthread.h"
42 #include "inline-frame.h"
43 #include "tracepoint.h"
44 #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 unsigned 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
);
440 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
442 struct cmd_list_element
*c
;
445 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
447 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
448 alt
= xstrprintf ("target %s", t
->to_shortname
);
449 deprecate_cmd (c
, alt
);
462 struct target_ops
*t
;
464 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
465 if (t
->to_kill
!= NULL
)
468 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
478 target_load (char *arg
, int from_tty
)
480 target_dcache_invalidate ();
481 (*current_target
.to_load
) (arg
, from_tty
);
485 target_create_inferior (char *exec_file
, char *args
,
486 char **env
, int from_tty
)
488 struct target_ops
*t
;
490 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
492 if (t
->to_create_inferior
!= NULL
)
494 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
496 fprintf_unfiltered (gdb_stdlog
,
497 "target_create_inferior (%s, %s, xxx, %d)\n",
498 exec_file
, args
, from_tty
);
503 internal_error (__FILE__
, __LINE__
,
504 _("could not find a target to create inferior"));
508 target_terminal_inferior (void)
510 /* A background resume (``run&'') should leave GDB in control of the
511 terminal. Use target_can_async_p, not target_is_async_p, since at
512 this point the target is not async yet. However, if sync_execution
513 is not set, we know it will become async prior to resume. */
514 if (target_can_async_p () && !sync_execution
)
517 /* If GDB is resuming the inferior in the foreground, install
518 inferior's terminal modes. */
519 (*current_target
.to_terminal_inferior
) ();
523 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
524 struct target_ops
*t
)
526 errno
= EIO
; /* Can't read/write this location. */
527 return 0; /* No bytes handled. */
533 error (_("You can't do that when your target is `%s'"),
534 current_target
.to_shortname
);
540 error (_("You can't do that without a process to debug."));
544 default_terminal_info (char *args
, int from_tty
)
546 printf_unfiltered (_("No saved terminal information.\n"));
549 /* A default implementation for the to_get_ada_task_ptid target method.
551 This function builds the PTID by using both LWP and TID as part of
552 the PTID lwp and tid elements. The pid used is the pid of the
556 default_get_ada_task_ptid (long lwp
, long tid
)
558 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
561 static enum exec_direction_kind
562 default_execution_direction (void)
564 if (!target_can_execute_reverse
)
566 else if (!target_can_async_p ())
569 gdb_assert_not_reached ("\
570 to_execution_direction must be implemented for reverse async");
573 /* Go through the target stack from top to bottom, copying over zero
574 entries in current_target, then filling in still empty entries. In
575 effect, we are doing class inheritance through the pushed target
578 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
579 is currently implemented, is that it discards any knowledge of
580 which target an inherited method originally belonged to.
581 Consequently, new new target methods should instead explicitly and
582 locally search the target stack for the target that can handle the
586 update_current_target (void)
588 struct target_ops
*t
;
590 /* First, reset current's contents. */
591 memset (¤t_target
, 0, sizeof (current_target
));
593 #define INHERIT(FIELD, TARGET) \
594 if (!current_target.FIELD) \
595 current_target.FIELD = (TARGET)->FIELD
597 for (t
= target_stack
; t
; t
= t
->beneath
)
599 INHERIT (to_shortname
, t
);
600 INHERIT (to_longname
, t
);
602 /* Do not inherit to_open. */
603 /* Do not inherit to_close. */
604 /* Do not inherit to_attach. */
605 INHERIT (to_post_attach
, t
);
606 INHERIT (to_attach_no_wait
, t
);
607 /* Do not inherit to_detach. */
608 /* Do not inherit to_disconnect. */
609 /* Do not inherit to_resume. */
610 /* Do not inherit to_wait. */
611 /* Do not inherit to_fetch_registers. */
612 /* Do not inherit to_store_registers. */
613 INHERIT (to_prepare_to_store
, t
);
614 INHERIT (deprecated_xfer_memory
, t
);
615 INHERIT (to_files_info
, t
);
616 INHERIT (to_insert_breakpoint
, t
);
617 INHERIT (to_remove_breakpoint
, t
);
618 INHERIT (to_can_use_hw_breakpoint
, t
);
619 INHERIT (to_insert_hw_breakpoint
, t
);
620 INHERIT (to_remove_hw_breakpoint
, t
);
621 /* Do not inherit to_ranged_break_num_registers. */
622 INHERIT (to_insert_watchpoint
, t
);
623 INHERIT (to_remove_watchpoint
, t
);
624 /* Do not inherit to_insert_mask_watchpoint. */
625 /* Do not inherit to_remove_mask_watchpoint. */
626 INHERIT (to_stopped_data_address
, t
);
627 INHERIT (to_have_steppable_watchpoint
, t
);
628 INHERIT (to_have_continuable_watchpoint
, t
);
629 INHERIT (to_stopped_by_watchpoint
, t
);
630 INHERIT (to_watchpoint_addr_within_range
, t
);
631 INHERIT (to_region_ok_for_hw_watchpoint
, t
);
632 INHERIT (to_can_accel_watchpoint_condition
, t
);
633 /* Do not inherit to_masked_watch_num_registers. */
634 INHERIT (to_terminal_init
, t
);
635 INHERIT (to_terminal_inferior
, t
);
636 INHERIT (to_terminal_ours_for_output
, t
);
637 INHERIT (to_terminal_ours
, t
);
638 INHERIT (to_terminal_save_ours
, t
);
639 INHERIT (to_terminal_info
, t
);
640 /* Do not inherit to_kill. */
641 INHERIT (to_load
, t
);
642 /* Do no inherit to_create_inferior. */
643 INHERIT (to_post_startup_inferior
, t
);
644 INHERIT (to_insert_fork_catchpoint
, t
);
645 INHERIT (to_remove_fork_catchpoint
, t
);
646 INHERIT (to_insert_vfork_catchpoint
, t
);
647 INHERIT (to_remove_vfork_catchpoint
, t
);
648 /* Do not inherit to_follow_fork. */
649 INHERIT (to_insert_exec_catchpoint
, t
);
650 INHERIT (to_remove_exec_catchpoint
, t
);
651 INHERIT (to_set_syscall_catchpoint
, t
);
652 INHERIT (to_has_exited
, t
);
653 /* Do not inherit to_mourn_inferior. */
654 INHERIT (to_can_run
, t
);
655 /* Do not inherit to_pass_signals. */
656 /* Do not inherit to_program_signals. */
657 /* Do not inherit to_thread_alive. */
658 /* Do not inherit to_find_new_threads. */
659 /* Do not inherit to_pid_to_str. */
660 INHERIT (to_extra_thread_info
, t
);
661 INHERIT (to_thread_name
, t
);
662 INHERIT (to_stop
, t
);
663 /* Do not inherit to_xfer_partial. */
664 INHERIT (to_rcmd
, t
);
665 INHERIT (to_pid_to_exec_file
, t
);
666 INHERIT (to_log_command
, t
);
667 INHERIT (to_stratum
, t
);
668 /* Do not inherit to_has_all_memory. */
669 /* Do not inherit to_has_memory. */
670 /* Do not inherit to_has_stack. */
671 /* Do not inherit to_has_registers. */
672 /* Do not inherit to_has_execution. */
673 INHERIT (to_has_thread_control
, t
);
674 INHERIT (to_can_async_p
, t
);
675 INHERIT (to_is_async_p
, t
);
676 INHERIT (to_async
, t
);
677 INHERIT (to_find_memory_regions
, t
);
678 INHERIT (to_make_corefile_notes
, t
);
679 INHERIT (to_get_bookmark
, t
);
680 INHERIT (to_goto_bookmark
, t
);
681 /* Do not inherit to_get_thread_local_address. */
682 INHERIT (to_can_execute_reverse
, t
);
683 INHERIT (to_execution_direction
, t
);
684 INHERIT (to_thread_architecture
, t
);
685 /* Do not inherit to_read_description. */
686 INHERIT (to_get_ada_task_ptid
, t
);
687 /* Do not inherit to_search_memory. */
688 INHERIT (to_supports_multi_process
, t
);
689 INHERIT (to_supports_enable_disable_tracepoint
, t
);
690 INHERIT (to_supports_string_tracing
, t
);
691 INHERIT (to_trace_init
, t
);
692 INHERIT (to_download_tracepoint
, t
);
693 INHERIT (to_can_download_tracepoint
, t
);
694 INHERIT (to_download_trace_state_variable
, t
);
695 INHERIT (to_enable_tracepoint
, t
);
696 INHERIT (to_disable_tracepoint
, t
);
697 INHERIT (to_trace_set_readonly_regions
, t
);
698 INHERIT (to_trace_start
, t
);
699 INHERIT (to_get_trace_status
, t
);
700 INHERIT (to_get_tracepoint_status
, t
);
701 INHERIT (to_trace_stop
, t
);
702 INHERIT (to_trace_find
, t
);
703 INHERIT (to_get_trace_state_variable_value
, t
);
704 INHERIT (to_save_trace_data
, t
);
705 INHERIT (to_upload_tracepoints
, t
);
706 INHERIT (to_upload_trace_state_variables
, t
);
707 INHERIT (to_get_raw_trace_data
, t
);
708 INHERIT (to_get_min_fast_tracepoint_insn_len
, t
);
709 INHERIT (to_set_disconnected_tracing
, t
);
710 INHERIT (to_set_circular_trace_buffer
, t
);
711 INHERIT (to_set_trace_buffer_size
, t
);
712 INHERIT (to_set_trace_notes
, t
);
713 INHERIT (to_get_tib_address
, t
);
714 INHERIT (to_set_permissions
, t
);
715 INHERIT (to_static_tracepoint_marker_at
, t
);
716 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
717 INHERIT (to_traceframe_info
, t
);
718 INHERIT (to_use_agent
, t
);
719 INHERIT (to_can_use_agent
, t
);
720 INHERIT (to_magic
, t
);
721 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
722 INHERIT (to_can_run_breakpoint_commands
, t
);
723 /* Do not inherit to_memory_map. */
724 /* Do not inherit to_flash_erase. */
725 /* Do not inherit to_flash_done. */
729 /* Clean up a target struct so it no longer has any zero pointers in
730 it. Some entries are defaulted to a method that print an error,
731 others are hard-wired to a standard recursive default. */
733 #define de_fault(field, value) \
734 if (!current_target.field) \
735 current_target.field = value
738 (void (*) (char *, int))
743 de_fault (to_post_attach
,
746 de_fault (to_prepare_to_store
,
747 (void (*) (struct regcache
*))
749 de_fault (deprecated_xfer_memory
,
750 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
751 struct mem_attrib
*, struct target_ops
*))
753 de_fault (to_files_info
,
754 (void (*) (struct target_ops
*))
756 de_fault (to_insert_breakpoint
,
757 memory_insert_breakpoint
);
758 de_fault (to_remove_breakpoint
,
759 memory_remove_breakpoint
);
760 de_fault (to_can_use_hw_breakpoint
,
761 (int (*) (int, int, int))
763 de_fault (to_insert_hw_breakpoint
,
764 (int (*) (struct gdbarch
*, struct bp_target_info
*))
766 de_fault (to_remove_hw_breakpoint
,
767 (int (*) (struct gdbarch
*, struct bp_target_info
*))
769 de_fault (to_insert_watchpoint
,
770 (int (*) (CORE_ADDR
, int, int, struct expression
*))
772 de_fault (to_remove_watchpoint
,
773 (int (*) (CORE_ADDR
, int, int, struct expression
*))
775 de_fault (to_stopped_by_watchpoint
,
778 de_fault (to_stopped_data_address
,
779 (int (*) (struct target_ops
*, CORE_ADDR
*))
781 de_fault (to_watchpoint_addr_within_range
,
782 default_watchpoint_addr_within_range
);
783 de_fault (to_region_ok_for_hw_watchpoint
,
784 default_region_ok_for_hw_watchpoint
);
785 de_fault (to_can_accel_watchpoint_condition
,
786 (int (*) (CORE_ADDR
, int, int, struct expression
*))
788 de_fault (to_terminal_init
,
791 de_fault (to_terminal_inferior
,
794 de_fault (to_terminal_ours_for_output
,
797 de_fault (to_terminal_ours
,
800 de_fault (to_terminal_save_ours
,
803 de_fault (to_terminal_info
,
804 default_terminal_info
);
806 (void (*) (char *, int))
808 de_fault (to_post_startup_inferior
,
811 de_fault (to_insert_fork_catchpoint
,
814 de_fault (to_remove_fork_catchpoint
,
817 de_fault (to_insert_vfork_catchpoint
,
820 de_fault (to_remove_vfork_catchpoint
,
823 de_fault (to_insert_exec_catchpoint
,
826 de_fault (to_remove_exec_catchpoint
,
829 de_fault (to_set_syscall_catchpoint
,
830 (int (*) (int, int, int, int, int *))
832 de_fault (to_has_exited
,
833 (int (*) (int, int, int *))
835 de_fault (to_can_run
,
837 de_fault (to_extra_thread_info
,
838 (char *(*) (struct thread_info
*))
840 de_fault (to_thread_name
,
841 (char *(*) (struct thread_info
*))
846 current_target
.to_xfer_partial
= current_xfer_partial
;
848 (void (*) (char *, struct ui_file
*))
850 de_fault (to_pid_to_exec_file
,
854 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
856 de_fault (to_thread_architecture
,
857 default_thread_architecture
);
858 current_target
.to_read_description
= NULL
;
859 de_fault (to_get_ada_task_ptid
,
860 (ptid_t (*) (long, long))
861 default_get_ada_task_ptid
);
862 de_fault (to_supports_multi_process
,
865 de_fault (to_supports_enable_disable_tracepoint
,
868 de_fault (to_supports_string_tracing
,
871 de_fault (to_trace_init
,
874 de_fault (to_download_tracepoint
,
875 (void (*) (struct bp_location
*))
877 de_fault (to_can_download_tracepoint
,
880 de_fault (to_download_trace_state_variable
,
881 (void (*) (struct trace_state_variable
*))
883 de_fault (to_enable_tracepoint
,
884 (void (*) (struct bp_location
*))
886 de_fault (to_disable_tracepoint
,
887 (void (*) (struct bp_location
*))
889 de_fault (to_trace_set_readonly_regions
,
892 de_fault (to_trace_start
,
895 de_fault (to_get_trace_status
,
896 (int (*) (struct trace_status
*))
898 de_fault (to_get_tracepoint_status
,
899 (void (*) (struct breakpoint
*, struct uploaded_tp
*))
901 de_fault (to_trace_stop
,
904 de_fault (to_trace_find
,
905 (int (*) (enum trace_find_type
, int, ULONGEST
, ULONGEST
, int *))
907 de_fault (to_get_trace_state_variable_value
,
908 (int (*) (int, LONGEST
*))
910 de_fault (to_save_trace_data
,
911 (int (*) (const char *))
913 de_fault (to_upload_tracepoints
,
914 (int (*) (struct uploaded_tp
**))
916 de_fault (to_upload_trace_state_variables
,
917 (int (*) (struct uploaded_tsv
**))
919 de_fault (to_get_raw_trace_data
,
920 (LONGEST (*) (gdb_byte
*, ULONGEST
, LONGEST
))
922 de_fault (to_get_min_fast_tracepoint_insn_len
,
925 de_fault (to_set_disconnected_tracing
,
928 de_fault (to_set_circular_trace_buffer
,
931 de_fault (to_set_trace_buffer_size
,
934 de_fault (to_set_trace_notes
,
935 (int (*) (char *, char *, char *))
937 de_fault (to_get_tib_address
,
938 (int (*) (ptid_t
, CORE_ADDR
*))
940 de_fault (to_set_permissions
,
943 de_fault (to_static_tracepoint_marker_at
,
944 (int (*) (CORE_ADDR
, struct static_tracepoint_marker
*))
946 de_fault (to_static_tracepoint_markers_by_strid
,
947 (VEC(static_tracepoint_marker_p
) * (*) (const char *))
949 de_fault (to_traceframe_info
,
950 (struct traceframe_info
* (*) (void))
952 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
955 de_fault (to_can_run_breakpoint_commands
,
958 de_fault (to_use_agent
,
961 de_fault (to_can_use_agent
,
964 de_fault (to_execution_direction
, default_execution_direction
);
968 /* Finally, position the target-stack beneath the squashed
969 "current_target". That way code looking for a non-inherited
970 target method can quickly and simply find it. */
971 current_target
.beneath
= target_stack
;
974 setup_target_debug ();
977 /* Push a new target type into the stack of the existing target accessors,
978 possibly superseding some of the existing accessors.
980 Rather than allow an empty stack, we always have the dummy target at
981 the bottom stratum, so we can call the function vectors without
985 push_target (struct target_ops
*t
)
987 struct target_ops
**cur
;
989 /* Check magic number. If wrong, it probably means someone changed
990 the struct definition, but not all the places that initialize one. */
991 if (t
->to_magic
!= OPS_MAGIC
)
993 fprintf_unfiltered (gdb_stderr
,
994 "Magic number of %s target struct wrong\n",
996 internal_error (__FILE__
, __LINE__
,
997 _("failed internal consistency check"));
1000 /* Find the proper stratum to install this target in. */
1001 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1003 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
1007 /* If there's already targets at this stratum, remove them. */
1008 /* FIXME: cagney/2003-10-15: I think this should be popping all
1009 targets to CUR, and not just those at this stratum level. */
1010 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
1012 /* There's already something at this stratum level. Close it,
1013 and un-hook it from the stack. */
1014 struct target_ops
*tmp
= (*cur
);
1016 (*cur
) = (*cur
)->beneath
;
1017 tmp
->beneath
= NULL
;
1018 target_close (tmp
, 0);
1021 /* We have removed all targets in our stratum, now add the new one. */
1022 t
->beneath
= (*cur
);
1025 update_current_target ();
1028 /* Remove a target_ops vector from the stack, wherever it may be.
1029 Return how many times it was removed (0 or 1). */
1032 unpush_target (struct target_ops
*t
)
1034 struct target_ops
**cur
;
1035 struct target_ops
*tmp
;
1037 if (t
->to_stratum
== dummy_stratum
)
1038 internal_error (__FILE__
, __LINE__
,
1039 _("Attempt to unpush the dummy target"));
1041 /* Look for the specified target. Note that we assume that a target
1042 can only occur once in the target stack. */
1044 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1050 /* If we don't find target_ops, quit. Only open targets should be
1055 /* Unchain the target. */
1057 (*cur
) = (*cur
)->beneath
;
1058 tmp
->beneath
= NULL
;
1060 update_current_target ();
1062 /* Finally close the target. Note we do this after unchaining, so
1063 any target method calls from within the target_close
1064 implementation don't end up in T anymore. */
1065 target_close (t
, 0);
1073 target_close (target_stack
, 0); /* Let it clean up. */
1074 if (unpush_target (target_stack
) == 1)
1077 fprintf_unfiltered (gdb_stderr
,
1078 "pop_target couldn't find target %s\n",
1079 current_target
.to_shortname
);
1080 internal_error (__FILE__
, __LINE__
,
1081 _("failed internal consistency check"));
1085 pop_all_targets_above (enum strata above_stratum
, int quitting
)
1087 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
1089 target_close (target_stack
, quitting
);
1090 if (!unpush_target (target_stack
))
1092 fprintf_unfiltered (gdb_stderr
,
1093 "pop_all_targets couldn't find target %s\n",
1094 target_stack
->to_shortname
);
1095 internal_error (__FILE__
, __LINE__
,
1096 _("failed internal consistency check"));
1103 pop_all_targets (int quitting
)
1105 pop_all_targets_above (dummy_stratum
, quitting
);
1108 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
1111 target_is_pushed (struct target_ops
*t
)
1113 struct target_ops
**cur
;
1115 /* Check magic number. If wrong, it probably means someone changed
1116 the struct definition, but not all the places that initialize one. */
1117 if (t
->to_magic
!= OPS_MAGIC
)
1119 fprintf_unfiltered (gdb_stderr
,
1120 "Magic number of %s target struct wrong\n",
1122 internal_error (__FILE__
, __LINE__
,
1123 _("failed internal consistency check"));
1126 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1133 /* Using the objfile specified in OBJFILE, find the address for the
1134 current thread's thread-local storage with offset OFFSET. */
1136 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1138 volatile CORE_ADDR addr
= 0;
1139 struct target_ops
*target
;
1141 for (target
= current_target
.beneath
;
1143 target
= target
->beneath
)
1145 if (target
->to_get_thread_local_address
!= NULL
)
1150 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
1152 ptid_t ptid
= inferior_ptid
;
1153 volatile struct gdb_exception ex
;
1155 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1159 /* Fetch the load module address for this objfile. */
1160 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1162 /* If it's 0, throw the appropriate exception. */
1164 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1165 _("TLS load module not found"));
1167 addr
= target
->to_get_thread_local_address (target
, ptid
,
1170 /* If an error occurred, print TLS related messages here. Otherwise,
1171 throw the error to some higher catcher. */
1174 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1178 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1179 error (_("Cannot find thread-local variables "
1180 "in this thread library."));
1182 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1183 if (objfile_is_library
)
1184 error (_("Cannot find shared library `%s' in dynamic"
1185 " linker's load module list"), objfile
->name
);
1187 error (_("Cannot find executable file `%s' in dynamic"
1188 " linker's load module list"), objfile
->name
);
1190 case TLS_NOT_ALLOCATED_YET_ERROR
:
1191 if (objfile_is_library
)
1192 error (_("The inferior has not yet allocated storage for"
1193 " thread-local variables in\n"
1194 "the shared library `%s'\n"
1196 objfile
->name
, target_pid_to_str (ptid
));
1198 error (_("The inferior has not yet allocated storage for"
1199 " thread-local variables in\n"
1200 "the executable `%s'\n"
1202 objfile
->name
, target_pid_to_str (ptid
));
1204 case TLS_GENERIC_ERROR
:
1205 if (objfile_is_library
)
1206 error (_("Cannot find thread-local storage for %s, "
1207 "shared library %s:\n%s"),
1208 target_pid_to_str (ptid
),
1209 objfile
->name
, ex
.message
);
1211 error (_("Cannot find thread-local storage for %s, "
1212 "executable file %s:\n%s"),
1213 target_pid_to_str (ptid
),
1214 objfile
->name
, ex
.message
);
1217 throw_exception (ex
);
1222 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1223 TLS is an ABI-specific thing. But we don't do that yet. */
1225 error (_("Cannot find thread-local variables on this target"));
1231 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1233 /* target_read_string -- read a null terminated string, up to LEN bytes,
1234 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1235 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1236 is responsible for freeing it. Return the number of bytes successfully
1240 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1242 int tlen
, offset
, i
;
1246 int buffer_allocated
;
1248 unsigned int nbytes_read
= 0;
1250 gdb_assert (string
);
1252 /* Small for testing. */
1253 buffer_allocated
= 4;
1254 buffer
= xmalloc (buffer_allocated
);
1259 tlen
= MIN (len
, 4 - (memaddr
& 3));
1260 offset
= memaddr
& 3;
1262 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1265 /* The transfer request might have crossed the boundary to an
1266 unallocated region of memory. Retry the transfer, requesting
1270 errcode
= target_read_memory (memaddr
, buf
, 1);
1275 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1279 bytes
= bufptr
- buffer
;
1280 buffer_allocated
*= 2;
1281 buffer
= xrealloc (buffer
, buffer_allocated
);
1282 bufptr
= buffer
+ bytes
;
1285 for (i
= 0; i
< tlen
; i
++)
1287 *bufptr
++ = buf
[i
+ offset
];
1288 if (buf
[i
+ offset
] == '\000')
1290 nbytes_read
+= i
+ 1;
1297 nbytes_read
+= tlen
;
1306 struct target_section_table
*
1307 target_get_section_table (struct target_ops
*target
)
1309 struct target_ops
*t
;
1312 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1314 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1315 if (t
->to_get_section_table
!= NULL
)
1316 return (*t
->to_get_section_table
) (t
);
1321 /* Find a section containing ADDR. */
1323 struct target_section
*
1324 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1326 struct target_section_table
*table
= target_get_section_table (target
);
1327 struct target_section
*secp
;
1332 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1334 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1340 /* Read memory from the live target, even if currently inspecting a
1341 traceframe. The return is the same as that of target_read. */
1344 target_read_live_memory (enum target_object object
,
1345 ULONGEST memaddr
, gdb_byte
*myaddr
, LONGEST len
)
1348 struct cleanup
*cleanup
;
1350 /* Switch momentarily out of tfind mode so to access live memory.
1351 Note that this must not clear global state, such as the frame
1352 cache, which must still remain valid for the previous traceframe.
1353 We may be _building_ the frame cache at this point. */
1354 cleanup
= make_cleanup_restore_traceframe_number ();
1355 set_traceframe_number (-1);
1357 ret
= target_read (current_target
.beneath
, object
, NULL
,
1358 myaddr
, memaddr
, len
);
1360 do_cleanups (cleanup
);
1364 /* Using the set of read-only target sections of OPS, read live
1365 read-only memory. Note that the actual reads start from the
1366 top-most target again.
1368 For interface/parameters/return description see target.h,
1372 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1373 enum target_object object
,
1374 gdb_byte
*readbuf
, ULONGEST memaddr
,
1377 struct target_section
*secp
;
1378 struct target_section_table
*table
;
1380 secp
= target_section_by_addr (ops
, memaddr
);
1382 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1385 struct target_section
*p
;
1386 ULONGEST memend
= memaddr
+ len
;
1388 table
= target_get_section_table (ops
);
1390 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1392 if (memaddr
>= p
->addr
)
1394 if (memend
<= p
->endaddr
)
1396 /* Entire transfer is within this section. */
1397 return target_read_live_memory (object
, memaddr
,
1400 else if (memaddr
>= p
->endaddr
)
1402 /* This section ends before the transfer starts. */
1407 /* This section overlaps the transfer. Just do half. */
1408 len
= p
->endaddr
- memaddr
;
1409 return target_read_live_memory (object
, memaddr
,
1419 /* Perform a partial memory transfer.
1420 For docs see target.h, to_xfer_partial. */
1423 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1424 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1429 struct mem_region
*region
;
1430 struct inferior
*inf
;
1432 /* For accesses to unmapped overlay sections, read directly from
1433 files. Must do this first, as MEMADDR may need adjustment. */
1434 if (readbuf
!= NULL
&& overlay_debugging
)
1436 struct obj_section
*section
= find_pc_overlay (memaddr
);
1438 if (pc_in_unmapped_range (memaddr
, section
))
1440 struct target_section_table
*table
1441 = target_get_section_table (ops
);
1442 const char *section_name
= section
->the_bfd_section
->name
;
1444 memaddr
= overlay_mapped_address (memaddr
, section
);
1445 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1448 table
->sections_end
,
1453 /* Try the executable files, if "trust-readonly-sections" is set. */
1454 if (readbuf
!= NULL
&& trust_readonly
)
1456 struct target_section
*secp
;
1457 struct target_section_table
*table
;
1459 secp
= target_section_by_addr (ops
, memaddr
);
1461 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1464 table
= target_get_section_table (ops
);
1465 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1468 table
->sections_end
,
1473 /* If reading unavailable memory in the context of traceframes, and
1474 this address falls within a read-only section, fallback to
1475 reading from live memory. */
1476 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1478 VEC(mem_range_s
) *available
;
1480 /* If we fail to get the set of available memory, then the
1481 target does not support querying traceframe info, and so we
1482 attempt reading from the traceframe anyway (assuming the
1483 target implements the old QTro packet then). */
1484 if (traceframe_available_memory (&available
, memaddr
, len
))
1486 struct cleanup
*old_chain
;
1488 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1490 if (VEC_empty (mem_range_s
, available
)
1491 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1493 /* Don't read into the traceframe's available
1495 if (!VEC_empty (mem_range_s
, available
))
1497 LONGEST oldlen
= len
;
1499 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1500 gdb_assert (len
<= oldlen
);
1503 do_cleanups (old_chain
);
1505 /* This goes through the topmost target again. */
1506 res
= memory_xfer_live_readonly_partial (ops
, object
,
1507 readbuf
, memaddr
, len
);
1511 /* No use trying further, we know some memory starting
1512 at MEMADDR isn't available. */
1516 /* Don't try to read more than how much is available, in
1517 case the target implements the deprecated QTro packet to
1518 cater for older GDBs (the target's knowledge of read-only
1519 sections may be outdated by now). */
1520 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1522 do_cleanups (old_chain
);
1526 /* Try GDB's internal data cache. */
1527 region
= lookup_mem_region (memaddr
);
1528 /* region->hi == 0 means there's no upper bound. */
1529 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1532 reg_len
= region
->hi
- memaddr
;
1534 switch (region
->attrib
.mode
)
1537 if (writebuf
!= NULL
)
1542 if (readbuf
!= NULL
)
1547 /* We only support writing to flash during "load" for now. */
1548 if (writebuf
!= NULL
)
1549 error (_("Writing to flash memory forbidden in this context"));
1556 if (!ptid_equal (inferior_ptid
, null_ptid
))
1557 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1562 /* The dcache reads whole cache lines; that doesn't play well
1563 with reading from a trace buffer, because reading outside of
1564 the collected memory range fails. */
1565 && get_traceframe_number () == -1
1566 && (region
->attrib
.cache
1567 || (stack_cache_enabled_p
&& object
== TARGET_OBJECT_STACK_MEMORY
)))
1569 if (readbuf
!= NULL
)
1570 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
, readbuf
,
1573 /* FIXME drow/2006-08-09: If we're going to preserve const
1574 correctness dcache_xfer_memory should take readbuf and
1576 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
,
1585 /* If none of those methods found the memory we wanted, fall back
1586 to a target partial transfer. Normally a single call to
1587 to_xfer_partial is enough; if it doesn't recognize an object
1588 it will call the to_xfer_partial of the next target down.
1589 But for memory this won't do. Memory is the only target
1590 object which can be read from more than one valid target.
1591 A core file, for instance, could have some of memory but
1592 delegate other bits to the target below it. So, we must
1593 manually try all targets. */
1597 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1598 readbuf
, writebuf
, memaddr
, reg_len
);
1602 /* We want to continue past core files to executables, but not
1603 past a running target's memory. */
1604 if (ops
->to_has_all_memory (ops
))
1609 while (ops
!= NULL
);
1611 /* Make sure the cache gets updated no matter what - if we are writing
1612 to the stack. Even if this write is not tagged as such, we still need
1613 to update the cache. */
1618 && !region
->attrib
.cache
1619 && stack_cache_enabled_p
1620 && object
!= TARGET_OBJECT_STACK_MEMORY
)
1622 dcache_update (target_dcache
, memaddr
, (void *) writebuf
, res
);
1625 /* If we still haven't got anything, return the last error. We
1630 /* Perform a partial memory transfer. For docs see target.h,
1634 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1635 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1640 /* Zero length requests are ok and require no work. */
1644 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1645 breakpoint insns, thus hiding out from higher layers whether
1646 there are software breakpoints inserted in the code stream. */
1647 if (readbuf
!= NULL
)
1649 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
);
1651 if (res
> 0 && !show_memory_breakpoints
)
1652 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1657 struct cleanup
*old_chain
;
1659 buf
= xmalloc (len
);
1660 old_chain
= make_cleanup (xfree
, buf
);
1661 memcpy (buf
, writebuf
, len
);
1663 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1664 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
);
1666 do_cleanups (old_chain
);
1673 restore_show_memory_breakpoints (void *arg
)
1675 show_memory_breakpoints
= (uintptr_t) arg
;
1679 make_show_memory_breakpoints_cleanup (int show
)
1681 int current
= show_memory_breakpoints
;
1683 show_memory_breakpoints
= show
;
1684 return make_cleanup (restore_show_memory_breakpoints
,
1685 (void *) (uintptr_t) current
);
1688 /* For docs see target.h, to_xfer_partial. */
1691 target_xfer_partial (struct target_ops
*ops
,
1692 enum target_object object
, const char *annex
,
1693 void *readbuf
, const void *writebuf
,
1694 ULONGEST offset
, LONGEST len
)
1698 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1700 if (writebuf
&& !may_write_memory
)
1701 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1702 core_addr_to_string_nz (offset
), plongest (len
));
1704 /* If this is a memory transfer, let the memory-specific code
1705 have a look at it instead. Memory transfers are more
1707 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
)
1708 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1709 writebuf
, offset
, len
);
1712 enum target_object raw_object
= object
;
1714 /* If this is a raw memory transfer, request the normal
1715 memory object from other layers. */
1716 if (raw_object
== TARGET_OBJECT_RAW_MEMORY
)
1717 raw_object
= TARGET_OBJECT_MEMORY
;
1719 retval
= ops
->to_xfer_partial (ops
, raw_object
, annex
, readbuf
,
1720 writebuf
, offset
, len
);
1725 const unsigned char *myaddr
= NULL
;
1727 fprintf_unfiltered (gdb_stdlog
,
1728 "%s:target_xfer_partial "
1729 "(%d, %s, %s, %s, %s, %s) = %s",
1732 (annex
? annex
: "(null)"),
1733 host_address_to_string (readbuf
),
1734 host_address_to_string (writebuf
),
1735 core_addr_to_string_nz (offset
),
1736 plongest (len
), plongest (retval
));
1742 if (retval
> 0 && myaddr
!= NULL
)
1746 fputs_unfiltered (", bytes =", gdb_stdlog
);
1747 for (i
= 0; i
< retval
; i
++)
1749 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1751 if (targetdebug
< 2 && i
> 0)
1753 fprintf_unfiltered (gdb_stdlog
, " ...");
1756 fprintf_unfiltered (gdb_stdlog
, "\n");
1759 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1763 fputc_unfiltered ('\n', gdb_stdlog
);
1768 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
1769 GDB's memory at MYADDR. Returns either 0 for success or an errno value
1770 if any error occurs.
1772 If an error occurs, no guarantee is made about the contents of the data at
1773 MYADDR. In particular, the caller should not depend upon partial reads
1774 filling the buffer with good data. There is no way for the caller to know
1775 how much good data might have been transfered anyway. Callers that can
1776 deal with partial reads should call target_read (which will retry until
1777 it makes no progress, and then return how much was transferred). */
1780 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1782 /* Dispatch to the topmost target, not the flattened current_target.
1783 Memory accesses check target->to_has_(all_)memory, and the
1784 flattened target doesn't inherit those. */
1785 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1786 myaddr
, memaddr
, len
) == len
)
1792 /* Like target_read_memory, but specify explicitly that this is a read from
1793 the target's stack. This may trigger different cache behavior. */
1796 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1798 /* Dispatch to the topmost target, not the flattened current_target.
1799 Memory accesses check target->to_has_(all_)memory, and the
1800 flattened target doesn't inherit those. */
1802 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1803 myaddr
, memaddr
, len
) == len
)
1809 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1810 Returns either 0 for success or an errno value if any error occurs.
1811 If an error occurs, no guarantee is made about how much data got written.
1812 Callers that can deal with partial writes should call target_write. */
1815 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1817 /* Dispatch to the topmost target, not the flattened current_target.
1818 Memory accesses check target->to_has_(all_)memory, and the
1819 flattened target doesn't inherit those. */
1820 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1821 myaddr
, memaddr
, len
) == len
)
1827 /* Write LEN bytes from MYADDR to target raw memory at address
1828 MEMADDR. Returns either 0 for success or an errno value if any
1829 error occurs. If an error occurs, no guarantee is made about how
1830 much data got written. Callers that can deal with partial writes
1831 should call target_write. */
1834 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1836 /* Dispatch to the topmost target, not the flattened current_target.
1837 Memory accesses check target->to_has_(all_)memory, and the
1838 flattened target doesn't inherit those. */
1839 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1840 myaddr
, memaddr
, len
) == len
)
1846 /* Fetch the target's memory map. */
1849 target_memory_map (void)
1851 VEC(mem_region_s
) *result
;
1852 struct mem_region
*last_one
, *this_one
;
1854 struct target_ops
*t
;
1857 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1859 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1860 if (t
->to_memory_map
!= NULL
)
1866 result
= t
->to_memory_map (t
);
1870 qsort (VEC_address (mem_region_s
, result
),
1871 VEC_length (mem_region_s
, result
),
1872 sizeof (struct mem_region
), mem_region_cmp
);
1874 /* Check that regions do not overlap. Simultaneously assign
1875 a numbering for the "mem" commands to use to refer to
1878 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1880 this_one
->number
= ix
;
1882 if (last_one
&& last_one
->hi
> this_one
->lo
)
1884 warning (_("Overlapping regions in memory map: ignoring"));
1885 VEC_free (mem_region_s
, result
);
1888 last_one
= this_one
;
1895 target_flash_erase (ULONGEST address
, LONGEST length
)
1897 struct target_ops
*t
;
1899 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1900 if (t
->to_flash_erase
!= NULL
)
1903 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1904 hex_string (address
), phex (length
, 0));
1905 t
->to_flash_erase (t
, address
, length
);
1913 target_flash_done (void)
1915 struct target_ops
*t
;
1917 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1918 if (t
->to_flash_done
!= NULL
)
1921 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1922 t
->to_flash_done (t
);
1930 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1931 struct cmd_list_element
*c
, const char *value
)
1933 fprintf_filtered (file
,
1934 _("Mode for reading from readonly sections is %s.\n"),
1938 /* More generic transfers. */
1941 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1942 const char *annex
, gdb_byte
*readbuf
,
1943 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1945 if (object
== TARGET_OBJECT_MEMORY
1946 && ops
->deprecated_xfer_memory
!= NULL
)
1947 /* If available, fall back to the target's
1948 "deprecated_xfer_memory" method. */
1953 if (writebuf
!= NULL
)
1955 void *buffer
= xmalloc (len
);
1956 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1958 memcpy (buffer
, writebuf
, len
);
1959 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1960 1/*write*/, NULL
, ops
);
1961 do_cleanups (cleanup
);
1963 if (readbuf
!= NULL
)
1964 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1965 0/*read*/, NULL
, ops
);
1968 else if (xfered
== 0 && errno
== 0)
1969 /* "deprecated_xfer_memory" uses 0, cross checked against
1970 ERRNO as one indication of an error. */
1975 else if (ops
->beneath
!= NULL
)
1976 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1977 readbuf
, writebuf
, offset
, len
);
1982 /* The xfer_partial handler for the topmost target. Unlike the default,
1983 it does not need to handle memory specially; it just passes all
1984 requests down the stack. */
1987 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1988 const char *annex
, gdb_byte
*readbuf
,
1989 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1991 if (ops
->beneath
!= NULL
)
1992 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1993 readbuf
, writebuf
, offset
, len
);
1998 /* Target vector read/write partial wrapper functions. */
2001 target_read_partial (struct target_ops
*ops
,
2002 enum target_object object
,
2003 const char *annex
, gdb_byte
*buf
,
2004 ULONGEST offset
, LONGEST len
)
2006 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
2010 target_write_partial (struct target_ops
*ops
,
2011 enum target_object object
,
2012 const char *annex
, const gdb_byte
*buf
,
2013 ULONGEST offset
, LONGEST len
)
2015 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
2018 /* Wrappers to perform the full transfer. */
2020 /* For docs on target_read see target.h. */
2023 target_read (struct target_ops
*ops
,
2024 enum target_object object
,
2025 const char *annex
, gdb_byte
*buf
,
2026 ULONGEST offset
, LONGEST len
)
2030 while (xfered
< len
)
2032 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
2033 (gdb_byte
*) buf
+ xfered
,
2034 offset
+ xfered
, len
- xfered
);
2036 /* Call an observer, notifying them of the xfer progress? */
2047 /* Assuming that the entire [begin, end) range of memory cannot be
2048 read, try to read whatever subrange is possible to read.
2050 The function returns, in RESULT, either zero or one memory block.
2051 If there's a readable subrange at the beginning, it is completely
2052 read and returned. Any further readable subrange will not be read.
2053 Otherwise, if there's a readable subrange at the end, it will be
2054 completely read and returned. Any readable subranges before it
2055 (obviously, not starting at the beginning), will be ignored. In
2056 other cases -- either no readable subrange, or readable subrange(s)
2057 that is neither at the beginning, or end, nothing is returned.
2059 The purpose of this function is to handle a read across a boundary
2060 of accessible memory in a case when memory map is not available.
2061 The above restrictions are fine for this case, but will give
2062 incorrect results if the memory is 'patchy'. However, supporting
2063 'patchy' memory would require trying to read every single byte,
2064 and it seems unacceptable solution. Explicit memory map is
2065 recommended for this case -- and target_read_memory_robust will
2066 take care of reading multiple ranges then. */
2069 read_whatever_is_readable (struct target_ops
*ops
,
2070 ULONGEST begin
, ULONGEST end
,
2071 VEC(memory_read_result_s
) **result
)
2073 gdb_byte
*buf
= xmalloc (end
- begin
);
2074 ULONGEST current_begin
= begin
;
2075 ULONGEST current_end
= end
;
2077 memory_read_result_s r
;
2079 /* If we previously failed to read 1 byte, nothing can be done here. */
2080 if (end
- begin
<= 1)
2086 /* Check that either first or the last byte is readable, and give up
2087 if not. This heuristic is meant to permit reading accessible memory
2088 at the boundary of accessible region. */
2089 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2090 buf
, begin
, 1) == 1)
2095 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2096 buf
+ (end
-begin
) - 1, end
- 1, 1) == 1)
2107 /* Loop invariant is that the [current_begin, current_end) was previously
2108 found to be not readable as a whole.
2110 Note loop condition -- if the range has 1 byte, we can't divide the range
2111 so there's no point trying further. */
2112 while (current_end
- current_begin
> 1)
2114 ULONGEST first_half_begin
, first_half_end
;
2115 ULONGEST second_half_begin
, second_half_end
;
2117 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2121 first_half_begin
= current_begin
;
2122 first_half_end
= middle
;
2123 second_half_begin
= middle
;
2124 second_half_end
= current_end
;
2128 first_half_begin
= middle
;
2129 first_half_end
= current_end
;
2130 second_half_begin
= current_begin
;
2131 second_half_end
= middle
;
2134 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2135 buf
+ (first_half_begin
- begin
),
2137 first_half_end
- first_half_begin
);
2139 if (xfer
== first_half_end
- first_half_begin
)
2141 /* This half reads up fine. So, the error must be in the
2143 current_begin
= second_half_begin
;
2144 current_end
= second_half_end
;
2148 /* This half is not readable. Because we've tried one byte, we
2149 know some part of this half if actually redable. Go to the next
2150 iteration to divide again and try to read.
2152 We don't handle the other half, because this function only tries
2153 to read a single readable subrange. */
2154 current_begin
= first_half_begin
;
2155 current_end
= first_half_end
;
2161 /* The [begin, current_begin) range has been read. */
2163 r
.end
= current_begin
;
2168 /* The [current_end, end) range has been read. */
2169 LONGEST rlen
= end
- current_end
;
2171 r
.data
= xmalloc (rlen
);
2172 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2173 r
.begin
= current_end
;
2177 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2181 free_memory_read_result_vector (void *x
)
2183 VEC(memory_read_result_s
) *v
= x
;
2184 memory_read_result_s
*current
;
2187 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2189 xfree (current
->data
);
2191 VEC_free (memory_read_result_s
, v
);
2194 VEC(memory_read_result_s
) *
2195 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2197 VEC(memory_read_result_s
) *result
= 0;
2200 while (xfered
< len
)
2202 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2205 /* If there is no explicit region, a fake one should be created. */
2206 gdb_assert (region
);
2208 if (region
->hi
== 0)
2209 rlen
= len
- xfered
;
2211 rlen
= region
->hi
- offset
;
2213 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2215 /* Cannot read this region. Note that we can end up here only
2216 if the region is explicitly marked inaccessible, or
2217 'inaccessible-by-default' is in effect. */
2222 LONGEST to_read
= min (len
- xfered
, rlen
);
2223 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2225 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2226 (gdb_byte
*) buffer
,
2227 offset
+ xfered
, to_read
);
2228 /* Call an observer, notifying them of the xfer progress? */
2231 /* Got an error reading full chunk. See if maybe we can read
2234 read_whatever_is_readable (ops
, offset
+ xfered
,
2235 offset
+ xfered
+ to_read
, &result
);
2240 struct memory_read_result r
;
2242 r
.begin
= offset
+ xfered
;
2243 r
.end
= r
.begin
+ xfer
;
2244 VEC_safe_push (memory_read_result_s
, result
, &r
);
2254 /* An alternative to target_write with progress callbacks. */
2257 target_write_with_progress (struct target_ops
*ops
,
2258 enum target_object object
,
2259 const char *annex
, const gdb_byte
*buf
,
2260 ULONGEST offset
, LONGEST len
,
2261 void (*progress
) (ULONGEST
, void *), void *baton
)
2265 /* Give the progress callback a chance to set up. */
2267 (*progress
) (0, baton
);
2269 while (xfered
< len
)
2271 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
2272 (gdb_byte
*) buf
+ xfered
,
2273 offset
+ xfered
, len
- xfered
);
2281 (*progress
) (xfer
, baton
);
2289 /* For docs on target_write see target.h. */
2292 target_write (struct target_ops
*ops
,
2293 enum target_object object
,
2294 const char *annex
, const gdb_byte
*buf
,
2295 ULONGEST offset
, LONGEST len
)
2297 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2301 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2302 the size of the transferred data. PADDING additional bytes are
2303 available in *BUF_P. This is a helper function for
2304 target_read_alloc; see the declaration of that function for more
2308 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2309 const char *annex
, gdb_byte
**buf_p
, int padding
)
2311 size_t buf_alloc
, buf_pos
;
2315 /* This function does not have a length parameter; it reads the
2316 entire OBJECT). Also, it doesn't support objects fetched partly
2317 from one target and partly from another (in a different stratum,
2318 e.g. a core file and an executable). Both reasons make it
2319 unsuitable for reading memory. */
2320 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2322 /* Start by reading up to 4K at a time. The target will throttle
2323 this number down if necessary. */
2325 buf
= xmalloc (buf_alloc
);
2329 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2330 buf_pos
, buf_alloc
- buf_pos
- padding
);
2333 /* An error occurred. */
2339 /* Read all there was. */
2349 /* If the buffer is filling up, expand it. */
2350 if (buf_alloc
< buf_pos
* 2)
2353 buf
= xrealloc (buf
, buf_alloc
);
2360 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2361 the size of the transferred data. See the declaration in "target.h"
2362 function for more information about the return value. */
2365 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2366 const char *annex
, gdb_byte
**buf_p
)
2368 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2371 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2372 returned as a string, allocated using xmalloc. If an error occurs
2373 or the transfer is unsupported, NULL is returned. Empty objects
2374 are returned as allocated but empty strings. A warning is issued
2375 if the result contains any embedded NUL bytes. */
2378 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2382 LONGEST i
, transferred
;
2384 transferred
= target_read_alloc_1 (ops
, object
, annex
,
2385 (gdb_byte
**) &buffer
, 1);
2387 if (transferred
< 0)
2390 if (transferred
== 0)
2391 return xstrdup ("");
2393 buffer
[transferred
] = 0;
2395 /* Check for embedded NUL bytes; but allow trailing NULs. */
2396 for (i
= strlen (buffer
); i
< transferred
; i
++)
2399 warning (_("target object %d, annex %s, "
2400 "contained unexpected null characters"),
2401 (int) object
, annex
? annex
: "(none)");
2408 /* Memory transfer methods. */
2411 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2414 /* This method is used to read from an alternate, non-current
2415 target. This read must bypass the overlay support (as symbols
2416 don't match this target), and GDB's internal cache (wrong cache
2417 for this target). */
2418 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2420 memory_error (EIO
, addr
);
2424 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2425 int len
, enum bfd_endian byte_order
)
2427 gdb_byte buf
[sizeof (ULONGEST
)];
2429 gdb_assert (len
<= sizeof (buf
));
2430 get_target_memory (ops
, addr
, buf
, len
);
2431 return extract_unsigned_integer (buf
, len
, byte_order
);
2435 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2436 struct bp_target_info
*bp_tgt
)
2438 if (!may_insert_breakpoints
)
2440 warning (_("May not insert breakpoints"));
2444 return (*current_target
.to_insert_breakpoint
) (gdbarch
, bp_tgt
);
2448 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2449 struct bp_target_info
*bp_tgt
)
2451 /* This is kind of a weird case to handle, but the permission might
2452 have been changed after breakpoints were inserted - in which case
2453 we should just take the user literally and assume that any
2454 breakpoints should be left in place. */
2455 if (!may_insert_breakpoints
)
2457 warning (_("May not remove breakpoints"));
2461 return (*current_target
.to_remove_breakpoint
) (gdbarch
, bp_tgt
);
2465 target_info (char *args
, int from_tty
)
2467 struct target_ops
*t
;
2468 int has_all_mem
= 0;
2470 if (symfile_objfile
!= NULL
)
2471 printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile
->name
);
2473 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2475 if (!(*t
->to_has_memory
) (t
))
2478 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2481 printf_unfiltered (_("\tWhile running this, "
2482 "GDB does not access memory from...\n"));
2483 printf_unfiltered ("%s:\n", t
->to_longname
);
2484 (t
->to_files_info
) (t
);
2485 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2489 /* This function is called before any new inferior is created, e.g.
2490 by running a program, attaching, or connecting to a target.
2491 It cleans up any state from previous invocations which might
2492 change between runs. This is a subset of what target_preopen
2493 resets (things which might change between targets). */
2496 target_pre_inferior (int from_tty
)
2498 /* Clear out solib state. Otherwise the solib state of the previous
2499 inferior might have survived and is entirely wrong for the new
2500 target. This has been observed on GNU/Linux using glibc 2.3. How
2512 Cannot access memory at address 0xdeadbeef
2515 /* In some OSs, the shared library list is the same/global/shared
2516 across inferiors. If code is shared between processes, so are
2517 memory regions and features. */
2518 if (!gdbarch_has_global_solist (target_gdbarch ()))
2520 no_shared_libraries (NULL
, from_tty
);
2522 invalidate_target_mem_regions ();
2524 target_clear_description ();
2527 agent_capability_invalidate ();
2530 /* Callback for iterate_over_inferiors. Gets rid of the given
2534 dispose_inferior (struct inferior
*inf
, void *args
)
2536 struct thread_info
*thread
;
2538 thread
= any_thread_of_process (inf
->pid
);
2541 switch_to_thread (thread
->ptid
);
2543 /* Core inferiors actually should be detached, not killed. */
2544 if (target_has_execution
)
2547 target_detach (NULL
, 0);
2553 /* This is to be called by the open routine before it does
2557 target_preopen (int from_tty
)
2561 if (have_inferiors ())
2564 || !have_live_inferiors ()
2565 || query (_("A program is being debugged already. Kill it? ")))
2566 iterate_over_inferiors (dispose_inferior
, NULL
);
2568 error (_("Program not killed."));
2571 /* Calling target_kill may remove the target from the stack. But if
2572 it doesn't (which seems like a win for UDI), remove it now. */
2573 /* Leave the exec target, though. The user may be switching from a
2574 live process to a core of the same program. */
2575 pop_all_targets_above (file_stratum
, 0);
2577 target_pre_inferior (from_tty
);
2580 /* Detach a target after doing deferred register stores. */
2583 target_detach (char *args
, int from_tty
)
2585 struct target_ops
* t
;
2587 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2588 /* Don't remove global breakpoints here. They're removed on
2589 disconnection from the target. */
2592 /* If we're in breakpoints-always-inserted mode, have to remove
2593 them before detaching. */
2594 remove_breakpoints_pid (PIDGET (inferior_ptid
));
2596 prepare_for_detach ();
2598 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2600 if (t
->to_detach
!= NULL
)
2602 t
->to_detach (t
, args
, from_tty
);
2604 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2610 internal_error (__FILE__
, __LINE__
, _("could not find a target to detach"));
2614 target_disconnect (char *args
, int from_tty
)
2616 struct target_ops
*t
;
2618 /* If we're in breakpoints-always-inserted mode or if breakpoints
2619 are global across processes, we have to remove them before
2621 remove_breakpoints ();
2623 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2624 if (t
->to_disconnect
!= NULL
)
2627 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2629 t
->to_disconnect (t
, args
, from_tty
);
2637 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2639 struct target_ops
*t
;
2641 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2643 if (t
->to_wait
!= NULL
)
2645 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2649 char *status_string
;
2650 char *options_string
;
2652 status_string
= target_waitstatus_to_string (status
);
2653 options_string
= target_options_to_string (options
);
2654 fprintf_unfiltered (gdb_stdlog
,
2655 "target_wait (%d, status, options={%s})"
2657 PIDGET (ptid
), options_string
,
2658 PIDGET (retval
), status_string
);
2659 xfree (status_string
);
2660 xfree (options_string
);
2671 target_pid_to_str (ptid_t ptid
)
2673 struct target_ops
*t
;
2675 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2677 if (t
->to_pid_to_str
!= NULL
)
2678 return (*t
->to_pid_to_str
) (t
, ptid
);
2681 return normal_pid_to_str (ptid
);
2685 target_thread_name (struct thread_info
*info
)
2687 struct target_ops
*t
;
2689 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2691 if (t
->to_thread_name
!= NULL
)
2692 return (*t
->to_thread_name
) (info
);
2699 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2701 struct target_ops
*t
;
2703 target_dcache_invalidate ();
2705 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2707 if (t
->to_resume
!= NULL
)
2709 t
->to_resume (t
, ptid
, step
, signal
);
2711 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2713 step
? "step" : "continue",
2714 gdb_signal_to_name (signal
));
2716 registers_changed_ptid (ptid
);
2717 set_executing (ptid
, 1);
2718 set_running (ptid
, 1);
2719 clear_inline_frame_state (ptid
);
2728 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2730 struct target_ops
*t
;
2732 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2734 if (t
->to_pass_signals
!= NULL
)
2740 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2743 for (i
= 0; i
< numsigs
; i
++)
2744 if (pass_signals
[i
])
2745 fprintf_unfiltered (gdb_stdlog
, " %s",
2746 gdb_signal_to_name (i
));
2748 fprintf_unfiltered (gdb_stdlog
, " })\n");
2751 (*t
->to_pass_signals
) (numsigs
, pass_signals
);
2758 target_program_signals (int numsigs
, unsigned char *program_signals
)
2760 struct target_ops
*t
;
2762 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2764 if (t
->to_program_signals
!= NULL
)
2770 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2773 for (i
= 0; i
< numsigs
; i
++)
2774 if (program_signals
[i
])
2775 fprintf_unfiltered (gdb_stdlog
, " %s",
2776 gdb_signal_to_name (i
));
2778 fprintf_unfiltered (gdb_stdlog
, " })\n");
2781 (*t
->to_program_signals
) (numsigs
, program_signals
);
2787 /* Look through the list of possible targets for a target that can
2791 target_follow_fork (int follow_child
)
2793 struct target_ops
*t
;
2795 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2797 if (t
->to_follow_fork
!= NULL
)
2799 int retval
= t
->to_follow_fork (t
, follow_child
);
2802 fprintf_unfiltered (gdb_stdlog
, "target_follow_fork (%d) = %d\n",
2803 follow_child
, retval
);
2808 /* Some target returned a fork event, but did not know how to follow it. */
2809 internal_error (__FILE__
, __LINE__
,
2810 _("could not find a target to follow fork"));
2814 target_mourn_inferior (void)
2816 struct target_ops
*t
;
2818 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2820 if (t
->to_mourn_inferior
!= NULL
)
2822 t
->to_mourn_inferior (t
);
2824 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2826 /* We no longer need to keep handles on any of the object files.
2827 Make sure to release them to avoid unnecessarily locking any
2828 of them while we're not actually debugging. */
2829 bfd_cache_close_all ();
2835 internal_error (__FILE__
, __LINE__
,
2836 _("could not find a target to follow mourn inferior"));
2839 /* Look for a target which can describe architectural features, starting
2840 from TARGET. If we find one, return its description. */
2842 const struct target_desc
*
2843 target_read_description (struct target_ops
*target
)
2845 struct target_ops
*t
;
2847 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2848 if (t
->to_read_description
!= NULL
)
2850 const struct target_desc
*tdesc
;
2852 tdesc
= t
->to_read_description (t
);
2860 /* The default implementation of to_search_memory.
2861 This implements a basic search of memory, reading target memory and
2862 performing the search here (as opposed to performing the search in on the
2863 target side with, for example, gdbserver). */
2866 simple_search_memory (struct target_ops
*ops
,
2867 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2868 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2869 CORE_ADDR
*found_addrp
)
2871 /* NOTE: also defined in find.c testcase. */
2872 #define SEARCH_CHUNK_SIZE 16000
2873 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2874 /* Buffer to hold memory contents for searching. */
2875 gdb_byte
*search_buf
;
2876 unsigned search_buf_size
;
2877 struct cleanup
*old_cleanups
;
2879 search_buf_size
= chunk_size
+ pattern_len
- 1;
2881 /* No point in trying to allocate a buffer larger than the search space. */
2882 if (search_space_len
< search_buf_size
)
2883 search_buf_size
= search_space_len
;
2885 search_buf
= malloc (search_buf_size
);
2886 if (search_buf
== NULL
)
2887 error (_("Unable to allocate memory to perform the search."));
2888 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2890 /* Prime the search buffer. */
2892 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2893 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2895 warning (_("Unable to access %s bytes of target "
2896 "memory at %s, halting search."),
2897 pulongest (search_buf_size
), hex_string (start_addr
));
2898 do_cleanups (old_cleanups
);
2902 /* Perform the search.
2904 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2905 When we've scanned N bytes we copy the trailing bytes to the start and
2906 read in another N bytes. */
2908 while (search_space_len
>= pattern_len
)
2910 gdb_byte
*found_ptr
;
2911 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2913 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2914 pattern
, pattern_len
);
2916 if (found_ptr
!= NULL
)
2918 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2920 *found_addrp
= found_addr
;
2921 do_cleanups (old_cleanups
);
2925 /* Not found in this chunk, skip to next chunk. */
2927 /* Don't let search_space_len wrap here, it's unsigned. */
2928 if (search_space_len
>= chunk_size
)
2929 search_space_len
-= chunk_size
;
2931 search_space_len
= 0;
2933 if (search_space_len
>= pattern_len
)
2935 unsigned keep_len
= search_buf_size
- chunk_size
;
2936 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2939 /* Copy the trailing part of the previous iteration to the front
2940 of the buffer for the next iteration. */
2941 gdb_assert (keep_len
== pattern_len
- 1);
2942 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2944 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2946 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2947 search_buf
+ keep_len
, read_addr
,
2948 nr_to_read
) != nr_to_read
)
2950 warning (_("Unable to access %s bytes of target "
2951 "memory at %s, halting search."),
2952 plongest (nr_to_read
),
2953 hex_string (read_addr
));
2954 do_cleanups (old_cleanups
);
2958 start_addr
+= chunk_size
;
2964 do_cleanups (old_cleanups
);
2968 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2969 sequence of bytes in PATTERN with length PATTERN_LEN.
2971 The result is 1 if found, 0 if not found, and -1 if there was an error
2972 requiring halting of the search (e.g. memory read error).
2973 If the pattern is found the address is recorded in FOUND_ADDRP. */
2976 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2977 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2978 CORE_ADDR
*found_addrp
)
2980 struct target_ops
*t
;
2983 /* We don't use INHERIT to set current_target.to_search_memory,
2984 so we have to scan the target stack and handle targetdebug
2988 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2989 hex_string (start_addr
));
2991 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2992 if (t
->to_search_memory
!= NULL
)
2997 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2998 pattern
, pattern_len
, found_addrp
);
3002 /* If a special version of to_search_memory isn't available, use the
3004 found
= simple_search_memory (current_target
.beneath
,
3005 start_addr
, search_space_len
,
3006 pattern
, pattern_len
, found_addrp
);
3010 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
3015 /* Look through the currently pushed targets. If none of them will
3016 be able to restart the currently running process, issue an error
3020 target_require_runnable (void)
3022 struct target_ops
*t
;
3024 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3026 /* If this target knows how to create a new program, then
3027 assume we will still be able to after killing the current
3028 one. Either killing and mourning will not pop T, or else
3029 find_default_run_target will find it again. */
3030 if (t
->to_create_inferior
!= NULL
)
3033 /* Do not worry about thread_stratum targets that can not
3034 create inferiors. Assume they will be pushed again if
3035 necessary, and continue to the process_stratum. */
3036 if (t
->to_stratum
== thread_stratum
3037 || t
->to_stratum
== arch_stratum
)
3040 error (_("The \"%s\" target does not support \"run\". "
3041 "Try \"help target\" or \"continue\"."),
3045 /* This function is only called if the target is running. In that
3046 case there should have been a process_stratum target and it
3047 should either know how to create inferiors, or not... */
3048 internal_error (__FILE__
, __LINE__
, _("No targets found"));
3051 /* Look through the list of possible targets for a target that can
3052 execute a run or attach command without any other data. This is
3053 used to locate the default process stratum.
3055 If DO_MESG is not NULL, the result is always valid (error() is
3056 called for errors); else, return NULL on error. */
3058 static struct target_ops
*
3059 find_default_run_target (char *do_mesg
)
3061 struct target_ops
**t
;
3062 struct target_ops
*runable
= NULL
;
3067 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3070 if ((*t
)->to_can_run
&& target_can_run (*t
))
3080 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3089 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3091 struct target_ops
*t
;
3093 t
= find_default_run_target ("attach");
3094 (t
->to_attach
) (t
, args
, from_tty
);
3099 find_default_create_inferior (struct target_ops
*ops
,
3100 char *exec_file
, char *allargs
, char **env
,
3103 struct target_ops
*t
;
3105 t
= find_default_run_target ("run");
3106 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3111 find_default_can_async_p (void)
3113 struct target_ops
*t
;
3115 /* This may be called before the target is pushed on the stack;
3116 look for the default process stratum. If there's none, gdb isn't
3117 configured with a native debugger, and target remote isn't
3119 t
= find_default_run_target (NULL
);
3120 if (t
&& t
->to_can_async_p
)
3121 return (t
->to_can_async_p
) ();
3126 find_default_is_async_p (void)
3128 struct target_ops
*t
;
3130 /* This may be called before the target is pushed on the stack;
3131 look for the default process stratum. If there's none, gdb isn't
3132 configured with a native debugger, and target remote isn't
3134 t
= find_default_run_target (NULL
);
3135 if (t
&& t
->to_is_async_p
)
3136 return (t
->to_is_async_p
) ();
3141 find_default_supports_non_stop (void)
3143 struct target_ops
*t
;
3145 t
= find_default_run_target (NULL
);
3146 if (t
&& t
->to_supports_non_stop
)
3147 return (t
->to_supports_non_stop
) ();
3152 target_supports_non_stop (void)
3154 struct target_ops
*t
;
3156 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3157 if (t
->to_supports_non_stop
)
3158 return t
->to_supports_non_stop ();
3163 /* Implement the "info proc" command. */
3166 target_info_proc (char *args
, enum info_proc_what what
)
3168 struct target_ops
*t
;
3170 /* If we're already connected to something that can get us OS
3171 related data, use it. Otherwise, try using the native
3173 if (current_target
.to_stratum
>= process_stratum
)
3174 t
= current_target
.beneath
;
3176 t
= find_default_run_target (NULL
);
3178 for (; t
!= NULL
; t
= t
->beneath
)
3180 if (t
->to_info_proc
!= NULL
)
3182 t
->to_info_proc (t
, args
, what
);
3185 fprintf_unfiltered (gdb_stdlog
,
3186 "target_info_proc (\"%s\", %d)\n", args
, what
);
3196 find_default_supports_disable_randomization (void)
3198 struct target_ops
*t
;
3200 t
= find_default_run_target (NULL
);
3201 if (t
&& t
->to_supports_disable_randomization
)
3202 return (t
->to_supports_disable_randomization
) ();
3207 target_supports_disable_randomization (void)
3209 struct target_ops
*t
;
3211 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3212 if (t
->to_supports_disable_randomization
)
3213 return t
->to_supports_disable_randomization ();
3219 target_get_osdata (const char *type
)
3221 struct target_ops
*t
;
3223 /* If we're already connected to something that can get us OS
3224 related data, use it. Otherwise, try using the native
3226 if (current_target
.to_stratum
>= process_stratum
)
3227 t
= current_target
.beneath
;
3229 t
= find_default_run_target ("get OS data");
3234 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3237 /* Determine the current address space of thread PTID. */
3239 struct address_space
*
3240 target_thread_address_space (ptid_t ptid
)
3242 struct address_space
*aspace
;
3243 struct inferior
*inf
;
3244 struct target_ops
*t
;
3246 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3248 if (t
->to_thread_address_space
!= NULL
)
3250 aspace
= t
->to_thread_address_space (t
, ptid
);
3251 gdb_assert (aspace
);
3254 fprintf_unfiltered (gdb_stdlog
,
3255 "target_thread_address_space (%s) = %d\n",
3256 target_pid_to_str (ptid
),
3257 address_space_num (aspace
));
3262 /* Fall-back to the "main" address space of the inferior. */
3263 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3265 if (inf
== NULL
|| inf
->aspace
== NULL
)
3266 internal_error (__FILE__
, __LINE__
,
3267 _("Can't determine the current "
3268 "address space of thread %s\n"),
3269 target_pid_to_str (ptid
));
3275 /* Target file operations. */
3277 static struct target_ops
*
3278 default_fileio_target (void)
3280 /* If we're already connected to something that can perform
3281 file I/O, use it. Otherwise, try using the native target. */
3282 if (current_target
.to_stratum
>= process_stratum
)
3283 return current_target
.beneath
;
3285 return find_default_run_target ("file I/O");
3288 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3289 target file descriptor, or -1 if an error occurs (and set
3292 target_fileio_open (const char *filename
, int flags
, int mode
,
3295 struct target_ops
*t
;
3297 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3299 if (t
->to_fileio_open
!= NULL
)
3301 int fd
= t
->to_fileio_open (filename
, flags
, mode
, target_errno
);
3304 fprintf_unfiltered (gdb_stdlog
,
3305 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3306 filename
, flags
, mode
,
3307 fd
, fd
!= -1 ? 0 : *target_errno
);
3312 *target_errno
= FILEIO_ENOSYS
;
3316 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3317 Return the number of bytes written, or -1 if an error occurs
3318 (and set *TARGET_ERRNO). */
3320 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3321 ULONGEST offset
, int *target_errno
)
3323 struct target_ops
*t
;
3325 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3327 if (t
->to_fileio_pwrite
!= NULL
)
3329 int ret
= t
->to_fileio_pwrite (fd
, write_buf
, len
, offset
,
3333 fprintf_unfiltered (gdb_stdlog
,
3334 "target_fileio_pwrite (%d,...,%d,%s) "
3336 fd
, len
, pulongest (offset
),
3337 ret
, ret
!= -1 ? 0 : *target_errno
);
3342 *target_errno
= FILEIO_ENOSYS
;
3346 /* Read up to LEN bytes FD on the target into READ_BUF.
3347 Return the number of bytes read, or -1 if an error occurs
3348 (and set *TARGET_ERRNO). */
3350 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3351 ULONGEST offset
, int *target_errno
)
3353 struct target_ops
*t
;
3355 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3357 if (t
->to_fileio_pread
!= NULL
)
3359 int ret
= t
->to_fileio_pread (fd
, read_buf
, len
, offset
,
3363 fprintf_unfiltered (gdb_stdlog
,
3364 "target_fileio_pread (%d,...,%d,%s) "
3366 fd
, len
, pulongest (offset
),
3367 ret
, ret
!= -1 ? 0 : *target_errno
);
3372 *target_errno
= FILEIO_ENOSYS
;
3376 /* Close FD on the target. Return 0, or -1 if an error occurs
3377 (and set *TARGET_ERRNO). */
3379 target_fileio_close (int fd
, int *target_errno
)
3381 struct target_ops
*t
;
3383 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3385 if (t
->to_fileio_close
!= NULL
)
3387 int ret
= t
->to_fileio_close (fd
, target_errno
);
3390 fprintf_unfiltered (gdb_stdlog
,
3391 "target_fileio_close (%d) = %d (%d)\n",
3392 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3397 *target_errno
= FILEIO_ENOSYS
;
3401 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3402 occurs (and set *TARGET_ERRNO). */
3404 target_fileio_unlink (const char *filename
, int *target_errno
)
3406 struct target_ops
*t
;
3408 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3410 if (t
->to_fileio_unlink
!= NULL
)
3412 int ret
= t
->to_fileio_unlink (filename
, target_errno
);
3415 fprintf_unfiltered (gdb_stdlog
,
3416 "target_fileio_unlink (%s) = %d (%d)\n",
3417 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3422 *target_errno
= FILEIO_ENOSYS
;
3426 /* Read value of symbolic link FILENAME on the target. Return a
3427 null-terminated string allocated via xmalloc, or NULL if an error
3428 occurs (and set *TARGET_ERRNO). */
3430 target_fileio_readlink (const char *filename
, int *target_errno
)
3432 struct target_ops
*t
;
3434 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3436 if (t
->to_fileio_readlink
!= NULL
)
3438 char *ret
= t
->to_fileio_readlink (filename
, target_errno
);
3441 fprintf_unfiltered (gdb_stdlog
,
3442 "target_fileio_readlink (%s) = %s (%d)\n",
3443 filename
, ret
? ret
: "(nil)",
3444 ret
? 0 : *target_errno
);
3449 *target_errno
= FILEIO_ENOSYS
;
3454 target_fileio_close_cleanup (void *opaque
)
3456 int fd
= *(int *) opaque
;
3459 target_fileio_close (fd
, &target_errno
);
3462 /* Read target file FILENAME. Store the result in *BUF_P and
3463 return the size of the transferred data. PADDING additional bytes are
3464 available in *BUF_P. This is a helper function for
3465 target_fileio_read_alloc; see the declaration of that function for more
3469 target_fileio_read_alloc_1 (const char *filename
,
3470 gdb_byte
**buf_p
, int padding
)
3472 struct cleanup
*close_cleanup
;
3473 size_t buf_alloc
, buf_pos
;
3479 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3483 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3485 /* Start by reading up to 4K at a time. The target will throttle
3486 this number down if necessary. */
3488 buf
= xmalloc (buf_alloc
);
3492 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3493 buf_alloc
- buf_pos
- padding
, buf_pos
,
3497 /* An error occurred. */
3498 do_cleanups (close_cleanup
);
3504 /* Read all there was. */
3505 do_cleanups (close_cleanup
);
3515 /* If the buffer is filling up, expand it. */
3516 if (buf_alloc
< buf_pos
* 2)
3519 buf
= xrealloc (buf
, buf_alloc
);
3526 /* Read target file FILENAME. Store the result in *BUF_P and return
3527 the size of the transferred data. See the declaration in "target.h"
3528 function for more information about the return value. */
3531 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3533 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3536 /* Read target file FILENAME. The result is NUL-terminated and
3537 returned as a string, allocated using xmalloc. If an error occurs
3538 or the transfer is unsupported, NULL is returned. Empty objects
3539 are returned as allocated but empty strings. A warning is issued
3540 if the result contains any embedded NUL bytes. */
3543 target_fileio_read_stralloc (const char *filename
)
3546 LONGEST i
, transferred
;
3548 transferred
= target_fileio_read_alloc_1 (filename
,
3549 (gdb_byte
**) &buffer
, 1);
3551 if (transferred
< 0)
3554 if (transferred
== 0)
3555 return xstrdup ("");
3557 buffer
[transferred
] = 0;
3559 /* Check for embedded NUL bytes; but allow trailing NULs. */
3560 for (i
= strlen (buffer
); i
< transferred
; i
++)
3563 warning (_("target file %s "
3564 "contained unexpected null characters"),
3574 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3576 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3580 default_watchpoint_addr_within_range (struct target_ops
*target
,
3582 CORE_ADDR start
, int length
)
3584 return addr
>= start
&& addr
< start
+ length
;
3587 static struct gdbarch
*
3588 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3590 return target_gdbarch ();
3606 return_minus_one (void)
3611 /* Find a single runnable target in the stack and return it. If for
3612 some reason there is more than one, return NULL. */
3615 find_run_target (void)
3617 struct target_ops
**t
;
3618 struct target_ops
*runable
= NULL
;
3623 for (t
= target_structs
; t
< target_structs
+ target_struct_size
; ++t
)
3625 if ((*t
)->to_can_run
&& target_can_run (*t
))
3632 return (count
== 1 ? runable
: NULL
);
3636 * Find the next target down the stack from the specified target.
3640 find_target_beneath (struct target_ops
*t
)
3646 /* The inferior process has died. Long live the inferior! */
3649 generic_mourn_inferior (void)
3653 ptid
= inferior_ptid
;
3654 inferior_ptid
= null_ptid
;
3656 /* Mark breakpoints uninserted in case something tries to delete a
3657 breakpoint while we delete the inferior's threads (which would
3658 fail, since the inferior is long gone). */
3659 mark_breakpoints_out ();
3661 if (!ptid_equal (ptid
, null_ptid
))
3663 int pid
= ptid_get_pid (ptid
);
3664 exit_inferior (pid
);
3667 /* Note this wipes step-resume breakpoints, so needs to be done
3668 after exit_inferior, which ends up referencing the step-resume
3669 breakpoints through clear_thread_inferior_resources. */
3670 breakpoint_init_inferior (inf_exited
);
3672 registers_changed ();
3674 reopen_exec_file ();
3675 reinit_frame_cache ();
3677 if (deprecated_detach_hook
)
3678 deprecated_detach_hook ();
3681 /* Convert a normal process ID to a string. Returns the string in a
3685 normal_pid_to_str (ptid_t ptid
)
3687 static char buf
[32];
3689 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3694 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3696 return normal_pid_to_str (ptid
);
3699 /* Error-catcher for target_find_memory_regions. */
3701 dummy_find_memory_regions (find_memory_region_ftype ignore1
, void *ignore2
)
3703 error (_("Command not implemented for this target."));
3707 /* Error-catcher for target_make_corefile_notes. */
3709 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
3711 error (_("Command not implemented for this target."));
3715 /* Error-catcher for target_get_bookmark. */
3717 dummy_get_bookmark (char *ignore1
, int ignore2
)
3723 /* Error-catcher for target_goto_bookmark. */
3725 dummy_goto_bookmark (gdb_byte
*ignore
, int from_tty
)
3730 /* Set up the handful of non-empty slots needed by the dummy target
3734 init_dummy_target (void)
3736 dummy_target
.to_shortname
= "None";
3737 dummy_target
.to_longname
= "None";
3738 dummy_target
.to_doc
= "";
3739 dummy_target
.to_attach
= find_default_attach
;
3740 dummy_target
.to_detach
=
3741 (void (*)(struct target_ops
*, char *, int))target_ignore
;
3742 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3743 dummy_target
.to_can_async_p
= find_default_can_async_p
;
3744 dummy_target
.to_is_async_p
= find_default_is_async_p
;
3745 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3746 dummy_target
.to_supports_disable_randomization
3747 = find_default_supports_disable_randomization
;
3748 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3749 dummy_target
.to_stratum
= dummy_stratum
;
3750 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
3751 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
3752 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
3753 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
3754 dummy_target
.to_xfer_partial
= default_xfer_partial
;
3755 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3756 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3757 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3758 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3759 dummy_target
.to_has_execution
3760 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3761 dummy_target
.to_stopped_by_watchpoint
= return_zero
;
3762 dummy_target
.to_stopped_data_address
=
3763 (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
;
3764 dummy_target
.to_magic
= OPS_MAGIC
;
3768 debug_to_open (char *args
, int from_tty
)
3770 debug_target
.to_open (args
, from_tty
);
3772 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3776 target_close (struct target_ops
*targ
, int quitting
)
3778 if (targ
->to_xclose
!= NULL
)
3779 targ
->to_xclose (targ
, quitting
);
3780 else if (targ
->to_close
!= NULL
)
3781 targ
->to_close (quitting
);
3784 fprintf_unfiltered (gdb_stdlog
, "target_close (%d)\n", quitting
);
3788 target_attach (char *args
, int from_tty
)
3790 struct target_ops
*t
;
3792 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3794 if (t
->to_attach
!= NULL
)
3796 t
->to_attach (t
, args
, from_tty
);
3798 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3804 internal_error (__FILE__
, __LINE__
,
3805 _("could not find a target to attach"));
3809 target_thread_alive (ptid_t ptid
)
3811 struct target_ops
*t
;
3813 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3815 if (t
->to_thread_alive
!= NULL
)
3819 retval
= t
->to_thread_alive (t
, ptid
);
3821 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3822 PIDGET (ptid
), retval
);
3832 target_find_new_threads (void)
3834 struct target_ops
*t
;
3836 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3838 if (t
->to_find_new_threads
!= NULL
)
3840 t
->to_find_new_threads (t
);
3842 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3850 target_stop (ptid_t ptid
)
3854 warning (_("May not interrupt or stop the target, ignoring attempt"));
3858 (*current_target
.to_stop
) (ptid
);
3862 debug_to_post_attach (int pid
)
3864 debug_target
.to_post_attach (pid
);
3866 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3869 /* Return a pretty printed form of target_waitstatus.
3870 Space for the result is malloc'd, caller must free. */
3873 target_waitstatus_to_string (const struct target_waitstatus
*ws
)
3875 const char *kind_str
= "status->kind = ";
3879 case TARGET_WAITKIND_EXITED
:
3880 return xstrprintf ("%sexited, status = %d",
3881 kind_str
, ws
->value
.integer
);
3882 case TARGET_WAITKIND_STOPPED
:
3883 return xstrprintf ("%sstopped, signal = %s",
3884 kind_str
, gdb_signal_to_name (ws
->value
.sig
));
3885 case TARGET_WAITKIND_SIGNALLED
:
3886 return xstrprintf ("%ssignalled, signal = %s",
3887 kind_str
, gdb_signal_to_name (ws
->value
.sig
));
3888 case TARGET_WAITKIND_LOADED
:
3889 return xstrprintf ("%sloaded", kind_str
);
3890 case TARGET_WAITKIND_FORKED
:
3891 return xstrprintf ("%sforked", kind_str
);
3892 case TARGET_WAITKIND_VFORKED
:
3893 return xstrprintf ("%svforked", kind_str
);
3894 case TARGET_WAITKIND_EXECD
:
3895 return xstrprintf ("%sexecd", kind_str
);
3896 case TARGET_WAITKIND_VFORK_DONE
:
3897 return xstrprintf ("%svfork-done", kind_str
);
3898 case TARGET_WAITKIND_SYSCALL_ENTRY
:
3899 return xstrprintf ("%sentered syscall", kind_str
);
3900 case TARGET_WAITKIND_SYSCALL_RETURN
:
3901 return xstrprintf ("%sexited syscall", kind_str
);
3902 case TARGET_WAITKIND_SPURIOUS
:
3903 return xstrprintf ("%sspurious", kind_str
);
3904 case TARGET_WAITKIND_IGNORE
:
3905 return xstrprintf ("%signore", kind_str
);
3906 case TARGET_WAITKIND_NO_HISTORY
:
3907 return xstrprintf ("%sno-history", kind_str
);
3908 case TARGET_WAITKIND_NO_RESUMED
:
3909 return xstrprintf ("%sno-resumed", kind_str
);
3911 return xstrprintf ("%sunknown???", kind_str
);
3915 /* Concatenate ELEM to LIST, a comma separate list, and return the
3916 result. The LIST incoming argument is released. */
3919 str_comma_list_concat_elem (char *list
, const char *elem
)
3922 return xstrdup (elem
);
3924 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3927 /* Helper for target_options_to_string. If OPT is present in
3928 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3929 Returns the new resulting string. OPT is removed from
3933 do_option (int *target_options
, char *ret
,
3934 int opt
, char *opt_str
)
3936 if ((*target_options
& opt
) != 0)
3938 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3939 *target_options
&= ~opt
;
3946 target_options_to_string (int target_options
)
3950 #define DO_TARG_OPTION(OPT) \
3951 ret = do_option (&target_options, ret, OPT, #OPT)
3953 DO_TARG_OPTION (TARGET_WNOHANG
);
3955 if (target_options
!= 0)
3956 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3964 debug_print_register (const char * func
,
3965 struct regcache
*regcache
, int regno
)
3967 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3969 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3970 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3971 && gdbarch_register_name (gdbarch
, regno
) != NULL
3972 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3973 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3974 gdbarch_register_name (gdbarch
, regno
));
3976 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3977 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3979 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3980 int i
, size
= register_size (gdbarch
, regno
);
3981 gdb_byte buf
[MAX_REGISTER_SIZE
];
3983 regcache_raw_collect (regcache
, regno
, buf
);
3984 fprintf_unfiltered (gdb_stdlog
, " = ");
3985 for (i
= 0; i
< size
; i
++)
3987 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3989 if (size
<= sizeof (LONGEST
))
3991 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3993 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3994 core_addr_to_string_nz (val
), plongest (val
));
3997 fprintf_unfiltered (gdb_stdlog
, "\n");
4001 target_fetch_registers (struct regcache
*regcache
, int regno
)
4003 struct target_ops
*t
;
4005 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4007 if (t
->to_fetch_registers
!= NULL
)
4009 t
->to_fetch_registers (t
, regcache
, regno
);
4011 debug_print_register ("target_fetch_registers", regcache
, regno
);
4018 target_store_registers (struct regcache
*regcache
, int regno
)
4020 struct target_ops
*t
;
4022 if (!may_write_registers
)
4023 error (_("Writing to registers is not allowed (regno %d)"), regno
);
4025 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4027 if (t
->to_store_registers
!= NULL
)
4029 t
->to_store_registers (t
, regcache
, regno
);
4032 debug_print_register ("target_store_registers", regcache
, regno
);
4042 target_core_of_thread (ptid_t ptid
)
4044 struct target_ops
*t
;
4046 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4048 if (t
->to_core_of_thread
!= NULL
)
4050 int retval
= t
->to_core_of_thread (t
, ptid
);
4053 fprintf_unfiltered (gdb_stdlog
,
4054 "target_core_of_thread (%d) = %d\n",
4055 PIDGET (ptid
), retval
);
4064 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
4066 struct target_ops
*t
;
4068 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4070 if (t
->to_verify_memory
!= NULL
)
4072 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
4075 fprintf_unfiltered (gdb_stdlog
,
4076 "target_verify_memory (%s, %s) = %d\n",
4077 paddress (target_gdbarch (), memaddr
),
4087 /* The documentation for this function is in its prototype declaration in
4091 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4093 struct target_ops
*t
;
4095 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4096 if (t
->to_insert_mask_watchpoint
!= NULL
)
4100 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
4103 fprintf_unfiltered (gdb_stdlog
, "\
4104 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
4105 core_addr_to_string (addr
),
4106 core_addr_to_string (mask
), rw
, ret
);
4114 /* The documentation for this function is in its prototype declaration in
4118 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4120 struct target_ops
*t
;
4122 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4123 if (t
->to_remove_mask_watchpoint
!= NULL
)
4127 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
4130 fprintf_unfiltered (gdb_stdlog
, "\
4131 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
4132 core_addr_to_string (addr
),
4133 core_addr_to_string (mask
), rw
, ret
);
4141 /* The documentation for this function is in its prototype declaration
4145 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4147 struct target_ops
*t
;
4149 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4150 if (t
->to_masked_watch_num_registers
!= NULL
)
4151 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4156 /* The documentation for this function is in its prototype declaration
4160 target_ranged_break_num_registers (void)
4162 struct target_ops
*t
;
4164 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4165 if (t
->to_ranged_break_num_registers
!= NULL
)
4166 return t
->to_ranged_break_num_registers (t
);
4174 target_supports_btrace (void)
4176 struct target_ops
*t
;
4178 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4179 if (t
->to_supports_btrace
!= NULL
)
4180 return t
->to_supports_btrace ();
4187 struct btrace_target_info
*
4188 target_enable_btrace (ptid_t ptid
)
4190 struct target_ops
*t
;
4192 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4193 if (t
->to_enable_btrace
!= NULL
)
4194 return t
->to_enable_btrace (ptid
);
4203 target_disable_btrace (struct btrace_target_info
*btinfo
)
4205 struct target_ops
*t
;
4207 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4208 if (t
->to_disable_btrace
!= NULL
)
4209 return t
->to_disable_btrace (btinfo
);
4217 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4219 struct target_ops
*t
;
4221 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4222 if (t
->to_teardown_btrace
!= NULL
)
4223 return t
->to_teardown_btrace (btinfo
);
4230 VEC (btrace_block_s
) *
4231 target_read_btrace (struct btrace_target_info
*btinfo
,
4232 enum btrace_read_type type
)
4234 struct target_ops
*t
;
4236 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4237 if (t
->to_read_btrace
!= NULL
)
4238 return t
->to_read_btrace (btinfo
, type
);
4247 target_info_record (void)
4249 struct target_ops
*t
;
4251 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4252 if (t
->to_info_record
!= NULL
)
4254 t
->to_info_record ();
4264 target_save_record (char *filename
)
4266 struct target_ops
*t
;
4268 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4269 if (t
->to_save_record
!= NULL
)
4271 t
->to_save_record (filename
);
4281 target_supports_delete_record (void)
4283 struct target_ops
*t
;
4285 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4286 if (t
->to_delete_record
!= NULL
)
4295 target_delete_record (void)
4297 struct target_ops
*t
;
4299 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4300 if (t
->to_delete_record
!= NULL
)
4302 t
->to_delete_record ();
4312 target_record_is_replaying (void)
4314 struct target_ops
*t
;
4316 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4317 if (t
->to_record_is_replaying
!= NULL
)
4318 return t
->to_record_is_replaying ();
4326 target_goto_record_begin (void)
4328 struct target_ops
*t
;
4330 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4331 if (t
->to_goto_record_begin
!= NULL
)
4333 t
->to_goto_record_begin ();
4343 target_goto_record_end (void)
4345 struct target_ops
*t
;
4347 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4348 if (t
->to_goto_record_end
!= NULL
)
4350 t
->to_goto_record_end ();
4360 target_goto_record (ULONGEST insn
)
4362 struct target_ops
*t
;
4364 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4365 if (t
->to_goto_record
!= NULL
)
4367 t
->to_goto_record (insn
);
4375 debug_to_prepare_to_store (struct regcache
*regcache
)
4377 debug_target
.to_prepare_to_store (regcache
);
4379 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4383 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4384 int write
, struct mem_attrib
*attrib
,
4385 struct target_ops
*target
)
4389 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4392 fprintf_unfiltered (gdb_stdlog
,
4393 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4394 paddress (target_gdbarch (), memaddr
), len
,
4395 write
? "write" : "read", retval
);
4401 fputs_unfiltered (", bytes =", gdb_stdlog
);
4402 for (i
= 0; i
< retval
; i
++)
4404 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4406 if (targetdebug
< 2 && i
> 0)
4408 fprintf_unfiltered (gdb_stdlog
, " ...");
4411 fprintf_unfiltered (gdb_stdlog
, "\n");
4414 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4418 fputc_unfiltered ('\n', gdb_stdlog
);
4424 debug_to_files_info (struct target_ops
*target
)
4426 debug_target
.to_files_info (target
);
4428 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4432 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
4433 struct bp_target_info
*bp_tgt
)
4437 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
4439 fprintf_unfiltered (gdb_stdlog
,
4440 "target_insert_breakpoint (%s, xxx) = %ld\n",
4441 core_addr_to_string (bp_tgt
->placed_address
),
4442 (unsigned long) retval
);
4447 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
4448 struct bp_target_info
*bp_tgt
)
4452 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
4454 fprintf_unfiltered (gdb_stdlog
,
4455 "target_remove_breakpoint (%s, xxx) = %ld\n",
4456 core_addr_to_string (bp_tgt
->placed_address
),
4457 (unsigned long) retval
);
4462 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
4466 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
4468 fprintf_unfiltered (gdb_stdlog
,
4469 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4470 (unsigned long) type
,
4471 (unsigned long) cnt
,
4472 (unsigned long) from_tty
,
4473 (unsigned long) retval
);
4478 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
4482 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
4484 fprintf_unfiltered (gdb_stdlog
,
4485 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4486 core_addr_to_string (addr
), (unsigned long) len
,
4487 core_addr_to_string (retval
));
4492 debug_to_can_accel_watchpoint_condition (CORE_ADDR addr
, int len
, int rw
,
4493 struct expression
*cond
)
4497 retval
= debug_target
.to_can_accel_watchpoint_condition (addr
, len
,
4500 fprintf_unfiltered (gdb_stdlog
,
4501 "target_can_accel_watchpoint_condition "
4502 "(%s, %d, %d, %s) = %ld\n",
4503 core_addr_to_string (addr
), len
, rw
,
4504 host_address_to_string (cond
), (unsigned long) retval
);
4509 debug_to_stopped_by_watchpoint (void)
4513 retval
= debug_target
.to_stopped_by_watchpoint ();
4515 fprintf_unfiltered (gdb_stdlog
,
4516 "target_stopped_by_watchpoint () = %ld\n",
4517 (unsigned long) retval
);
4522 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4526 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4528 fprintf_unfiltered (gdb_stdlog
,
4529 "target_stopped_data_address ([%s]) = %ld\n",
4530 core_addr_to_string (*addr
),
4531 (unsigned long)retval
);
4536 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4538 CORE_ADDR start
, int length
)
4542 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4545 fprintf_filtered (gdb_stdlog
,
4546 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4547 core_addr_to_string (addr
), core_addr_to_string (start
),
4553 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
4554 struct bp_target_info
*bp_tgt
)
4558 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
4560 fprintf_unfiltered (gdb_stdlog
,
4561 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4562 core_addr_to_string (bp_tgt
->placed_address
),
4563 (unsigned long) retval
);
4568 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
4569 struct bp_target_info
*bp_tgt
)
4573 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
4575 fprintf_unfiltered (gdb_stdlog
,
4576 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4577 core_addr_to_string (bp_tgt
->placed_address
),
4578 (unsigned long) retval
);
4583 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
4584 struct expression
*cond
)
4588 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
, cond
);
4590 fprintf_unfiltered (gdb_stdlog
,
4591 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4592 core_addr_to_string (addr
), len
, type
,
4593 host_address_to_string (cond
), (unsigned long) retval
);
4598 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
4599 struct expression
*cond
)
4603 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
, cond
);
4605 fprintf_unfiltered (gdb_stdlog
,
4606 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4607 core_addr_to_string (addr
), len
, type
,
4608 host_address_to_string (cond
), (unsigned long) retval
);
4613 debug_to_terminal_init (void)
4615 debug_target
.to_terminal_init ();
4617 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4621 debug_to_terminal_inferior (void)
4623 debug_target
.to_terminal_inferior ();
4625 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4629 debug_to_terminal_ours_for_output (void)
4631 debug_target
.to_terminal_ours_for_output ();
4633 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4637 debug_to_terminal_ours (void)
4639 debug_target
.to_terminal_ours ();
4641 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4645 debug_to_terminal_save_ours (void)
4647 debug_target
.to_terminal_save_ours ();
4649 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4653 debug_to_terminal_info (char *arg
, int from_tty
)
4655 debug_target
.to_terminal_info (arg
, from_tty
);
4657 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4662 debug_to_load (char *args
, int from_tty
)
4664 debug_target
.to_load (args
, from_tty
);
4666 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4670 debug_to_post_startup_inferior (ptid_t ptid
)
4672 debug_target
.to_post_startup_inferior (ptid
);
4674 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4679 debug_to_insert_fork_catchpoint (int pid
)
4683 retval
= debug_target
.to_insert_fork_catchpoint (pid
);
4685 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4692 debug_to_remove_fork_catchpoint (int pid
)
4696 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
4698 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4705 debug_to_insert_vfork_catchpoint (int pid
)
4709 retval
= debug_target
.to_insert_vfork_catchpoint (pid
);
4711 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4718 debug_to_remove_vfork_catchpoint (int pid
)
4722 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
4724 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4731 debug_to_insert_exec_catchpoint (int pid
)
4735 retval
= debug_target
.to_insert_exec_catchpoint (pid
);
4737 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4744 debug_to_remove_exec_catchpoint (int pid
)
4748 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
4750 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4757 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
4761 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
4763 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4764 pid
, wait_status
, *exit_status
, has_exited
);
4770 debug_to_can_run (void)
4774 retval
= debug_target
.to_can_run ();
4776 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4781 static struct gdbarch
*
4782 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4784 struct gdbarch
*retval
;
4786 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4788 fprintf_unfiltered (gdb_stdlog
,
4789 "target_thread_architecture (%s) = %s [%s]\n",
4790 target_pid_to_str (ptid
),
4791 host_address_to_string (retval
),
4792 gdbarch_bfd_arch_info (retval
)->printable_name
);
4797 debug_to_stop (ptid_t ptid
)
4799 debug_target
.to_stop (ptid
);
4801 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4802 target_pid_to_str (ptid
));
4806 debug_to_rcmd (char *command
,
4807 struct ui_file
*outbuf
)
4809 debug_target
.to_rcmd (command
, outbuf
);
4810 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4814 debug_to_pid_to_exec_file (int pid
)
4818 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
4820 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4827 setup_target_debug (void)
4829 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4831 current_target
.to_open
= debug_to_open
;
4832 current_target
.to_post_attach
= debug_to_post_attach
;
4833 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4834 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4835 current_target
.to_files_info
= debug_to_files_info
;
4836 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4837 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4838 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4839 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4840 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4841 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4842 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4843 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4844 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4845 current_target
.to_watchpoint_addr_within_range
4846 = debug_to_watchpoint_addr_within_range
;
4847 current_target
.to_region_ok_for_hw_watchpoint
4848 = debug_to_region_ok_for_hw_watchpoint
;
4849 current_target
.to_can_accel_watchpoint_condition
4850 = debug_to_can_accel_watchpoint_condition
;
4851 current_target
.to_terminal_init
= debug_to_terminal_init
;
4852 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4853 current_target
.to_terminal_ours_for_output
4854 = debug_to_terminal_ours_for_output
;
4855 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4856 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4857 current_target
.to_terminal_info
= debug_to_terminal_info
;
4858 current_target
.to_load
= debug_to_load
;
4859 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4860 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4861 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4862 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4863 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4864 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4865 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4866 current_target
.to_has_exited
= debug_to_has_exited
;
4867 current_target
.to_can_run
= debug_to_can_run
;
4868 current_target
.to_stop
= debug_to_stop
;
4869 current_target
.to_rcmd
= debug_to_rcmd
;
4870 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4871 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4875 static char targ_desc
[] =
4876 "Names of targets and files being debugged.\nShows the entire \
4877 stack of targets currently in use (including the exec-file,\n\
4878 core-file, and process, if any), as well as the symbol file name.";
4881 do_monitor_command (char *cmd
,
4884 if ((current_target
.to_rcmd
4885 == (void (*) (char *, struct ui_file
*)) tcomplain
)
4886 || (current_target
.to_rcmd
== debug_to_rcmd
4887 && (debug_target
.to_rcmd
4888 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
4889 error (_("\"monitor\" command not supported by this target."));
4890 target_rcmd (cmd
, gdb_stdtarg
);
4893 /* Print the name of each layers of our target stack. */
4896 maintenance_print_target_stack (char *cmd
, int from_tty
)
4898 struct target_ops
*t
;
4900 printf_filtered (_("The current target stack is:\n"));
4902 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4904 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4908 /* Controls if async mode is permitted. */
4909 int target_async_permitted
= 0;
4911 /* The set command writes to this variable. If the inferior is
4912 executing, linux_nat_async_permitted is *not* updated. */
4913 static int target_async_permitted_1
= 0;
4916 set_target_async_command (char *args
, int from_tty
,
4917 struct cmd_list_element
*c
)
4919 if (have_live_inferiors ())
4921 target_async_permitted_1
= target_async_permitted
;
4922 error (_("Cannot change this setting while the inferior is running."));
4925 target_async_permitted
= target_async_permitted_1
;
4929 show_target_async_command (struct ui_file
*file
, int from_tty
,
4930 struct cmd_list_element
*c
,
4933 fprintf_filtered (file
,
4934 _("Controlling the inferior in "
4935 "asynchronous mode is %s.\n"), value
);
4938 /* Temporary copies of permission settings. */
4940 static int may_write_registers_1
= 1;
4941 static int may_write_memory_1
= 1;
4942 static int may_insert_breakpoints_1
= 1;
4943 static int may_insert_tracepoints_1
= 1;
4944 static int may_insert_fast_tracepoints_1
= 1;
4945 static int may_stop_1
= 1;
4947 /* Make the user-set values match the real values again. */
4950 update_target_permissions (void)
4952 may_write_registers_1
= may_write_registers
;
4953 may_write_memory_1
= may_write_memory
;
4954 may_insert_breakpoints_1
= may_insert_breakpoints
;
4955 may_insert_tracepoints_1
= may_insert_tracepoints
;
4956 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4957 may_stop_1
= may_stop
;
4960 /* The one function handles (most of) the permission flags in the same
4964 set_target_permissions (char *args
, int from_tty
,
4965 struct cmd_list_element
*c
)
4967 if (target_has_execution
)
4969 update_target_permissions ();
4970 error (_("Cannot change this setting while the inferior is running."));
4973 /* Make the real values match the user-changed values. */
4974 may_write_registers
= may_write_registers_1
;
4975 may_insert_breakpoints
= may_insert_breakpoints_1
;
4976 may_insert_tracepoints
= may_insert_tracepoints_1
;
4977 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4978 may_stop
= may_stop_1
;
4979 update_observer_mode ();
4982 /* Set memory write permission independently of observer mode. */
4985 set_write_memory_permission (char *args
, int from_tty
,
4986 struct cmd_list_element
*c
)
4988 /* Make the real values match the user-changed values. */
4989 may_write_memory
= may_write_memory_1
;
4990 update_observer_mode ();
4995 initialize_targets (void)
4997 init_dummy_target ();
4998 push_target (&dummy_target
);
5000 add_info ("target", target_info
, targ_desc
);
5001 add_info ("files", target_info
, targ_desc
);
5003 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
5004 Set target debugging."), _("\
5005 Show target debugging."), _("\
5006 When non-zero, target debugging is enabled. Higher numbers are more\n\
5007 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
5011 &setdebuglist
, &showdebuglist
);
5013 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
5014 &trust_readonly
, _("\
5015 Set mode for reading from readonly sections."), _("\
5016 Show mode for reading from readonly sections."), _("\
5017 When this mode is on, memory reads from readonly sections (such as .text)\n\
5018 will be read from the object file instead of from the target. This will\n\
5019 result in significant performance improvement for remote targets."),
5021 show_trust_readonly
,
5022 &setlist
, &showlist
);
5024 add_com ("monitor", class_obscure
, do_monitor_command
,
5025 _("Send a command to the remote monitor (remote targets only)."));
5027 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5028 _("Print the name of each layer of the internal target stack."),
5029 &maintenanceprintlist
);
5031 add_setshow_boolean_cmd ("target-async", no_class
,
5032 &target_async_permitted_1
, _("\
5033 Set whether gdb controls the inferior in asynchronous mode."), _("\
5034 Show whether gdb controls the inferior in asynchronous mode."), _("\
5035 Tells gdb whether to control the inferior in asynchronous mode."),
5036 set_target_async_command
,
5037 show_target_async_command
,
5041 add_setshow_boolean_cmd ("stack-cache", class_support
,
5042 &stack_cache_enabled_p_1
, _("\
5043 Set cache use for stack access."), _("\
5044 Show cache use for stack access."), _("\
5045 When on, use the data cache for all stack access, regardless of any\n\
5046 configured memory regions. This improves remote performance significantly.\n\
5047 By default, caching for stack access is on."),
5048 set_stack_cache_enabled_p
,
5049 show_stack_cache_enabled_p
,
5050 &setlist
, &showlist
);
5052 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5053 &may_write_registers_1
, _("\
5054 Set permission to write into registers."), _("\
5055 Show permission to write into registers."), _("\
5056 When this permission is on, GDB may write into the target's registers.\n\
5057 Otherwise, any sort of write attempt will result in an error."),
5058 set_target_permissions
, NULL
,
5059 &setlist
, &showlist
);
5061 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5062 &may_write_memory_1
, _("\
5063 Set permission to write into target memory."), _("\
5064 Show permission to write into target memory."), _("\
5065 When this permission is on, GDB may write into the target's memory.\n\
5066 Otherwise, any sort of write attempt will result in an error."),
5067 set_write_memory_permission
, NULL
,
5068 &setlist
, &showlist
);
5070 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5071 &may_insert_breakpoints_1
, _("\
5072 Set permission to insert breakpoints in the target."), _("\
5073 Show permission to insert breakpoints in the target."), _("\
5074 When this permission is on, GDB may insert breakpoints in the program.\n\
5075 Otherwise, any sort of insertion attempt will result in an error."),
5076 set_target_permissions
, NULL
,
5077 &setlist
, &showlist
);
5079 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5080 &may_insert_tracepoints_1
, _("\
5081 Set permission to insert tracepoints in the target."), _("\
5082 Show permission to insert tracepoints in the target."), _("\
5083 When this permission is on, GDB may insert tracepoints in the program.\n\
5084 Otherwise, any sort of insertion attempt will result in an error."),
5085 set_target_permissions
, NULL
,
5086 &setlist
, &showlist
);
5088 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5089 &may_insert_fast_tracepoints_1
, _("\
5090 Set permission to insert fast tracepoints in the target."), _("\
5091 Show permission to insert fast tracepoints in the target."), _("\
5092 When this permission is on, GDB may insert fast tracepoints.\n\
5093 Otherwise, any sort of insertion attempt will result in an error."),
5094 set_target_permissions
, NULL
,
5095 &setlist
, &showlist
);
5097 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5099 Set permission to interrupt or signal the target."), _("\
5100 Show permission to interrupt or signal the target."), _("\
5101 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5102 Otherwise, any attempt to interrupt or stop will be ignored."),
5103 set_target_permissions
, NULL
,
5104 &setlist
, &showlist
);
5107 target_dcache
= dcache_init ();