1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2012 Free Software Foundation, Inc.
5 Contributed by Cygnus Support.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "gdb_string.h"
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 int targetdebug
= 0;
210 show_targetdebug (struct ui_file
*file
, int from_tty
,
211 struct cmd_list_element
*c
, const char *value
)
213 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
216 static void setup_target_debug (void);
218 /* The option sets this. */
219 static int stack_cache_enabled_p_1
= 1;
220 /* And set_stack_cache_enabled_p updates this.
221 The reason for the separation is so that we don't flush the cache for
222 on->on transitions. */
223 static int stack_cache_enabled_p
= 1;
225 /* This is called *after* the stack-cache has been set.
226 Flush the cache for off->on and on->off transitions.
227 There's no real need to flush the cache for on->off transitions,
228 except cleanliness. */
231 set_stack_cache_enabled_p (char *args
, int from_tty
,
232 struct cmd_list_element
*c
)
234 if (stack_cache_enabled_p
!= stack_cache_enabled_p_1
)
235 target_dcache_invalidate ();
237 stack_cache_enabled_p
= stack_cache_enabled_p_1
;
241 show_stack_cache_enabled_p (struct ui_file
*file
, int from_tty
,
242 struct cmd_list_element
*c
, const char *value
)
244 fprintf_filtered (file
, _("Cache use for stack accesses is %s.\n"), value
);
247 /* Cache of memory operations, to speed up remote access. */
248 static DCACHE
*target_dcache
;
250 /* Invalidate the target dcache. */
253 target_dcache_invalidate (void)
255 dcache_invalidate (target_dcache
);
258 /* The user just typed 'target' without the name of a target. */
261 target_command (char *arg
, int from_tty
)
263 fputs_filtered ("Argument required (target name). Try `help target'\n",
267 /* Default target_has_* methods for process_stratum targets. */
270 default_child_has_all_memory (struct target_ops
*ops
)
272 /* If no inferior selected, then we can't read memory here. */
273 if (ptid_equal (inferior_ptid
, null_ptid
))
280 default_child_has_memory (struct target_ops
*ops
)
282 /* If no inferior selected, then we can't read memory here. */
283 if (ptid_equal (inferior_ptid
, null_ptid
))
290 default_child_has_stack (struct target_ops
*ops
)
292 /* If no inferior selected, there's no stack. */
293 if (ptid_equal (inferior_ptid
, null_ptid
))
300 default_child_has_registers (struct target_ops
*ops
)
302 /* Can't read registers from no inferior. */
303 if (ptid_equal (inferior_ptid
, null_ptid
))
310 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
312 /* If there's no thread selected, then we can't make it run through
314 if (ptid_equal (the_ptid
, null_ptid
))
322 target_has_all_memory_1 (void)
324 struct target_ops
*t
;
326 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
327 if (t
->to_has_all_memory (t
))
334 target_has_memory_1 (void)
336 struct target_ops
*t
;
338 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
339 if (t
->to_has_memory (t
))
346 target_has_stack_1 (void)
348 struct target_ops
*t
;
350 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
351 if (t
->to_has_stack (t
))
358 target_has_registers_1 (void)
360 struct target_ops
*t
;
362 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
363 if (t
->to_has_registers (t
))
370 target_has_execution_1 (ptid_t the_ptid
)
372 struct target_ops
*t
;
374 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
375 if (t
->to_has_execution (t
, the_ptid
))
382 target_has_execution_current (void)
384 return target_has_execution_1 (inferior_ptid
);
387 /* Add a possible target architecture to the list. */
390 add_target (struct target_ops
*t
)
392 /* Provide default values for all "must have" methods. */
393 if (t
->to_xfer_partial
== NULL
)
394 t
->to_xfer_partial
= default_xfer_partial
;
396 if (t
->to_has_all_memory
== NULL
)
397 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
399 if (t
->to_has_memory
== NULL
)
400 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
402 if (t
->to_has_stack
== NULL
)
403 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
405 if (t
->to_has_registers
== NULL
)
406 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
408 if (t
->to_has_execution
== NULL
)
409 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
413 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
414 target_structs
= (struct target_ops
**) xmalloc
415 (target_struct_allocsize
* sizeof (*target_structs
));
417 if (target_struct_size
>= target_struct_allocsize
)
419 target_struct_allocsize
*= 2;
420 target_structs
= (struct target_ops
**)
421 xrealloc ((char *) target_structs
,
422 target_struct_allocsize
* sizeof (*target_structs
));
424 target_structs
[target_struct_size
++] = t
;
426 if (targetlist
== NULL
)
427 add_prefix_cmd ("target", class_run
, target_command
, _("\
428 Connect to a target machine or process.\n\
429 The first argument is the type or protocol of the target machine.\n\
430 Remaining arguments are interpreted by the target protocol. For more\n\
431 information on the arguments for a particular protocol, type\n\
432 `help target ' followed by the protocol name."),
433 &targetlist
, "target ", 0, &cmdlist
);
434 add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
447 struct target_ops
*t
;
449 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
450 if (t
->to_kill
!= NULL
)
453 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
463 target_load (char *arg
, int from_tty
)
465 target_dcache_invalidate ();
466 (*current_target
.to_load
) (arg
, from_tty
);
470 target_create_inferior (char *exec_file
, char *args
,
471 char **env
, int from_tty
)
473 struct target_ops
*t
;
475 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
477 if (t
->to_create_inferior
!= NULL
)
479 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
481 fprintf_unfiltered (gdb_stdlog
,
482 "target_create_inferior (%s, %s, xxx, %d)\n",
483 exec_file
, args
, from_tty
);
488 internal_error (__FILE__
, __LINE__
,
489 _("could not find a target to create inferior"));
493 target_terminal_inferior (void)
495 /* A background resume (``run&'') should leave GDB in control of the
496 terminal. Use target_can_async_p, not target_is_async_p, since at
497 this point the target is not async yet. However, if sync_execution
498 is not set, we know it will become async prior to resume. */
499 if (target_can_async_p () && !sync_execution
)
502 /* If GDB is resuming the inferior in the foreground, install
503 inferior's terminal modes. */
504 (*current_target
.to_terminal_inferior
) ();
508 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
509 struct target_ops
*t
)
511 errno
= EIO
; /* Can't read/write this location. */
512 return 0; /* No bytes handled. */
518 error (_("You can't do that when your target is `%s'"),
519 current_target
.to_shortname
);
525 error (_("You can't do that without a process to debug."));
529 default_terminal_info (char *args
, int from_tty
)
531 printf_unfiltered (_("No saved terminal information.\n"));
534 /* A default implementation for the to_get_ada_task_ptid target method.
536 This function builds the PTID by using both LWP and TID as part of
537 the PTID lwp and tid elements. The pid used is the pid of the
541 default_get_ada_task_ptid (long lwp
, long tid
)
543 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
546 static enum exec_direction_kind
547 default_execution_direction (void)
549 if (!target_can_execute_reverse
)
551 else if (!target_can_async_p ())
554 gdb_assert_not_reached ("\
555 to_execution_direction must be implemented for reverse async");
558 /* Go through the target stack from top to bottom, copying over zero
559 entries in current_target, then filling in still empty entries. In
560 effect, we are doing class inheritance through the pushed target
563 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
564 is currently implemented, is that it discards any knowledge of
565 which target an inherited method originally belonged to.
566 Consequently, new new target methods should instead explicitly and
567 locally search the target stack for the target that can handle the
571 update_current_target (void)
573 struct target_ops
*t
;
575 /* First, reset current's contents. */
576 memset (¤t_target
, 0, sizeof (current_target
));
578 #define INHERIT(FIELD, TARGET) \
579 if (!current_target.FIELD) \
580 current_target.FIELD = (TARGET)->FIELD
582 for (t
= target_stack
; t
; t
= t
->beneath
)
584 INHERIT (to_shortname
, t
);
585 INHERIT (to_longname
, t
);
587 /* Do not inherit to_open. */
588 /* Do not inherit to_close. */
589 /* Do not inherit to_attach. */
590 INHERIT (to_post_attach
, t
);
591 INHERIT (to_attach_no_wait
, t
);
592 /* Do not inherit to_detach. */
593 /* Do not inherit to_disconnect. */
594 /* Do not inherit to_resume. */
595 /* Do not inherit to_wait. */
596 /* Do not inherit to_fetch_registers. */
597 /* Do not inherit to_store_registers. */
598 INHERIT (to_prepare_to_store
, t
);
599 INHERIT (deprecated_xfer_memory
, t
);
600 INHERIT (to_files_info
, t
);
601 INHERIT (to_insert_breakpoint
, t
);
602 INHERIT (to_remove_breakpoint
, t
);
603 INHERIT (to_can_use_hw_breakpoint
, t
);
604 INHERIT (to_insert_hw_breakpoint
, t
);
605 INHERIT (to_remove_hw_breakpoint
, t
);
606 /* Do not inherit to_ranged_break_num_registers. */
607 INHERIT (to_insert_watchpoint
, t
);
608 INHERIT (to_remove_watchpoint
, t
);
609 /* Do not inherit to_insert_mask_watchpoint. */
610 /* Do not inherit to_remove_mask_watchpoint. */
611 INHERIT (to_stopped_data_address
, t
);
612 INHERIT (to_have_steppable_watchpoint
, t
);
613 INHERIT (to_have_continuable_watchpoint
, t
);
614 INHERIT (to_stopped_by_watchpoint
, t
);
615 INHERIT (to_watchpoint_addr_within_range
, t
);
616 INHERIT (to_region_ok_for_hw_watchpoint
, t
);
617 INHERIT (to_can_accel_watchpoint_condition
, t
);
618 /* Do not inherit to_masked_watch_num_registers. */
619 INHERIT (to_terminal_init
, t
);
620 INHERIT (to_terminal_inferior
, t
);
621 INHERIT (to_terminal_ours_for_output
, t
);
622 INHERIT (to_terminal_ours
, t
);
623 INHERIT (to_terminal_save_ours
, t
);
624 INHERIT (to_terminal_info
, t
);
625 /* Do not inherit to_kill. */
626 INHERIT (to_load
, t
);
627 /* Do no inherit to_create_inferior. */
628 INHERIT (to_post_startup_inferior
, t
);
629 INHERIT (to_insert_fork_catchpoint
, t
);
630 INHERIT (to_remove_fork_catchpoint
, t
);
631 INHERIT (to_insert_vfork_catchpoint
, t
);
632 INHERIT (to_remove_vfork_catchpoint
, t
);
633 /* Do not inherit to_follow_fork. */
634 INHERIT (to_insert_exec_catchpoint
, t
);
635 INHERIT (to_remove_exec_catchpoint
, t
);
636 INHERIT (to_set_syscall_catchpoint
, t
);
637 INHERIT (to_has_exited
, t
);
638 /* Do not inherit to_mourn_inferior. */
639 INHERIT (to_can_run
, t
);
640 /* Do not inherit to_pass_signals. */
641 /* Do not inherit to_program_signals. */
642 /* Do not inherit to_thread_alive. */
643 /* Do not inherit to_find_new_threads. */
644 /* Do not inherit to_pid_to_str. */
645 INHERIT (to_extra_thread_info
, t
);
646 INHERIT (to_thread_name
, t
);
647 INHERIT (to_stop
, t
);
648 /* Do not inherit to_xfer_partial. */
649 INHERIT (to_rcmd
, t
);
650 INHERIT (to_pid_to_exec_file
, t
);
651 INHERIT (to_log_command
, t
);
652 INHERIT (to_stratum
, t
);
653 /* Do not inherit to_has_all_memory. */
654 /* Do not inherit to_has_memory. */
655 /* Do not inherit to_has_stack. */
656 /* Do not inherit to_has_registers. */
657 /* Do not inherit to_has_execution. */
658 INHERIT (to_has_thread_control
, t
);
659 INHERIT (to_can_async_p
, t
);
660 INHERIT (to_is_async_p
, t
);
661 INHERIT (to_async
, t
);
662 INHERIT (to_find_memory_regions
, t
);
663 INHERIT (to_make_corefile_notes
, t
);
664 INHERIT (to_get_bookmark
, t
);
665 INHERIT (to_goto_bookmark
, t
);
666 /* Do not inherit to_get_thread_local_address. */
667 INHERIT (to_can_execute_reverse
, t
);
668 INHERIT (to_execution_direction
, t
);
669 INHERIT (to_thread_architecture
, t
);
670 /* Do not inherit to_read_description. */
671 INHERIT (to_get_ada_task_ptid
, t
);
672 /* Do not inherit to_search_memory. */
673 INHERIT (to_supports_multi_process
, t
);
674 INHERIT (to_supports_enable_disable_tracepoint
, t
);
675 INHERIT (to_supports_string_tracing
, t
);
676 INHERIT (to_trace_init
, t
);
677 INHERIT (to_download_tracepoint
, t
);
678 INHERIT (to_can_download_tracepoint
, t
);
679 INHERIT (to_download_trace_state_variable
, t
);
680 INHERIT (to_enable_tracepoint
, t
);
681 INHERIT (to_disable_tracepoint
, t
);
682 INHERIT (to_trace_set_readonly_regions
, t
);
683 INHERIT (to_trace_start
, t
);
684 INHERIT (to_get_trace_status
, t
);
685 INHERIT (to_get_tracepoint_status
, t
);
686 INHERIT (to_trace_stop
, t
);
687 INHERIT (to_trace_find
, t
);
688 INHERIT (to_get_trace_state_variable_value
, t
);
689 INHERIT (to_save_trace_data
, t
);
690 INHERIT (to_upload_tracepoints
, t
);
691 INHERIT (to_upload_trace_state_variables
, t
);
692 INHERIT (to_get_raw_trace_data
, t
);
693 INHERIT (to_get_min_fast_tracepoint_insn_len
, t
);
694 INHERIT (to_set_disconnected_tracing
, t
);
695 INHERIT (to_set_circular_trace_buffer
, t
);
696 INHERIT (to_set_trace_notes
, t
);
697 INHERIT (to_get_tib_address
, t
);
698 INHERIT (to_set_permissions
, t
);
699 INHERIT (to_static_tracepoint_marker_at
, t
);
700 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
701 INHERIT (to_traceframe_info
, t
);
702 INHERIT (to_use_agent
, t
);
703 INHERIT (to_can_use_agent
, t
);
704 INHERIT (to_magic
, t
);
705 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
706 /* Do not inherit to_memory_map. */
707 /* Do not inherit to_flash_erase. */
708 /* Do not inherit to_flash_done. */
712 /* Clean up a target struct so it no longer has any zero pointers in
713 it. Some entries are defaulted to a method that print an error,
714 others are hard-wired to a standard recursive default. */
716 #define de_fault(field, value) \
717 if (!current_target.field) \
718 current_target.field = value
721 (void (*) (char *, int))
726 de_fault (to_post_attach
,
729 de_fault (to_prepare_to_store
,
730 (void (*) (struct regcache
*))
732 de_fault (deprecated_xfer_memory
,
733 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
734 struct mem_attrib
*, struct target_ops
*))
736 de_fault (to_files_info
,
737 (void (*) (struct target_ops
*))
739 de_fault (to_insert_breakpoint
,
740 memory_insert_breakpoint
);
741 de_fault (to_remove_breakpoint
,
742 memory_remove_breakpoint
);
743 de_fault (to_can_use_hw_breakpoint
,
744 (int (*) (int, int, int))
746 de_fault (to_insert_hw_breakpoint
,
747 (int (*) (struct gdbarch
*, struct bp_target_info
*))
749 de_fault (to_remove_hw_breakpoint
,
750 (int (*) (struct gdbarch
*, struct bp_target_info
*))
752 de_fault (to_insert_watchpoint
,
753 (int (*) (CORE_ADDR
, int, int, struct expression
*))
755 de_fault (to_remove_watchpoint
,
756 (int (*) (CORE_ADDR
, int, int, struct expression
*))
758 de_fault (to_stopped_by_watchpoint
,
761 de_fault (to_stopped_data_address
,
762 (int (*) (struct target_ops
*, CORE_ADDR
*))
764 de_fault (to_watchpoint_addr_within_range
,
765 default_watchpoint_addr_within_range
);
766 de_fault (to_region_ok_for_hw_watchpoint
,
767 default_region_ok_for_hw_watchpoint
);
768 de_fault (to_can_accel_watchpoint_condition
,
769 (int (*) (CORE_ADDR
, int, int, struct expression
*))
771 de_fault (to_terminal_init
,
774 de_fault (to_terminal_inferior
,
777 de_fault (to_terminal_ours_for_output
,
780 de_fault (to_terminal_ours
,
783 de_fault (to_terminal_save_ours
,
786 de_fault (to_terminal_info
,
787 default_terminal_info
);
789 (void (*) (char *, int))
791 de_fault (to_post_startup_inferior
,
794 de_fault (to_insert_fork_catchpoint
,
797 de_fault (to_remove_fork_catchpoint
,
800 de_fault (to_insert_vfork_catchpoint
,
803 de_fault (to_remove_vfork_catchpoint
,
806 de_fault (to_insert_exec_catchpoint
,
809 de_fault (to_remove_exec_catchpoint
,
812 de_fault (to_set_syscall_catchpoint
,
813 (int (*) (int, int, int, int, int *))
815 de_fault (to_has_exited
,
816 (int (*) (int, int, int *))
818 de_fault (to_can_run
,
820 de_fault (to_extra_thread_info
,
821 (char *(*) (struct thread_info
*))
823 de_fault (to_thread_name
,
824 (char *(*) (struct thread_info
*))
829 current_target
.to_xfer_partial
= current_xfer_partial
;
831 (void (*) (char *, struct ui_file
*))
833 de_fault (to_pid_to_exec_file
,
837 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
839 de_fault (to_thread_architecture
,
840 default_thread_architecture
);
841 current_target
.to_read_description
= NULL
;
842 de_fault (to_get_ada_task_ptid
,
843 (ptid_t (*) (long, long))
844 default_get_ada_task_ptid
);
845 de_fault (to_supports_multi_process
,
848 de_fault (to_supports_enable_disable_tracepoint
,
851 de_fault (to_supports_string_tracing
,
854 de_fault (to_trace_init
,
857 de_fault (to_download_tracepoint
,
858 (void (*) (struct bp_location
*))
860 de_fault (to_can_download_tracepoint
,
863 de_fault (to_download_trace_state_variable
,
864 (void (*) (struct trace_state_variable
*))
866 de_fault (to_enable_tracepoint
,
867 (void (*) (struct bp_location
*))
869 de_fault (to_disable_tracepoint
,
870 (void (*) (struct bp_location
*))
872 de_fault (to_trace_set_readonly_regions
,
875 de_fault (to_trace_start
,
878 de_fault (to_get_trace_status
,
879 (int (*) (struct trace_status
*))
881 de_fault (to_get_tracepoint_status
,
882 (void (*) (struct breakpoint
*, struct uploaded_tp
*))
884 de_fault (to_trace_stop
,
887 de_fault (to_trace_find
,
888 (int (*) (enum trace_find_type
, int, ULONGEST
, ULONGEST
, int *))
890 de_fault (to_get_trace_state_variable_value
,
891 (int (*) (int, LONGEST
*))
893 de_fault (to_save_trace_data
,
894 (int (*) (const char *))
896 de_fault (to_upload_tracepoints
,
897 (int (*) (struct uploaded_tp
**))
899 de_fault (to_upload_trace_state_variables
,
900 (int (*) (struct uploaded_tsv
**))
902 de_fault (to_get_raw_trace_data
,
903 (LONGEST (*) (gdb_byte
*, ULONGEST
, LONGEST
))
905 de_fault (to_get_min_fast_tracepoint_insn_len
,
908 de_fault (to_set_disconnected_tracing
,
911 de_fault (to_set_circular_trace_buffer
,
914 de_fault (to_set_trace_notes
,
915 (int (*) (char *, char *, char *))
917 de_fault (to_get_tib_address
,
918 (int (*) (ptid_t
, CORE_ADDR
*))
920 de_fault (to_set_permissions
,
923 de_fault (to_static_tracepoint_marker_at
,
924 (int (*) (CORE_ADDR
, struct static_tracepoint_marker
*))
926 de_fault (to_static_tracepoint_markers_by_strid
,
927 (VEC(static_tracepoint_marker_p
) * (*) (const char *))
929 de_fault (to_traceframe_info
,
930 (struct traceframe_info
* (*) (void))
932 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
935 de_fault (to_use_agent
,
938 de_fault (to_can_use_agent
,
941 de_fault (to_execution_direction
, default_execution_direction
);
945 /* Finally, position the target-stack beneath the squashed
946 "current_target". That way code looking for a non-inherited
947 target method can quickly and simply find it. */
948 current_target
.beneath
= target_stack
;
951 setup_target_debug ();
954 /* Push a new target type into the stack of the existing target accessors,
955 possibly superseding some of the existing accessors.
957 Rather than allow an empty stack, we always have the dummy target at
958 the bottom stratum, so we can call the function vectors without
962 push_target (struct target_ops
*t
)
964 struct target_ops
**cur
;
966 /* Check magic number. If wrong, it probably means someone changed
967 the struct definition, but not all the places that initialize one. */
968 if (t
->to_magic
!= OPS_MAGIC
)
970 fprintf_unfiltered (gdb_stderr
,
971 "Magic number of %s target struct wrong\n",
973 internal_error (__FILE__
, __LINE__
,
974 _("failed internal consistency check"));
977 /* Find the proper stratum to install this target in. */
978 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
980 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
984 /* If there's already targets at this stratum, remove them. */
985 /* FIXME: cagney/2003-10-15: I think this should be popping all
986 targets to CUR, and not just those at this stratum level. */
987 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
989 /* There's already something at this stratum level. Close it,
990 and un-hook it from the stack. */
991 struct target_ops
*tmp
= (*cur
);
993 (*cur
) = (*cur
)->beneath
;
995 target_close (tmp
, 0);
998 /* We have removed all targets in our stratum, now add the new one. */
1002 update_current_target ();
1005 /* Remove a target_ops vector from the stack, wherever it may be.
1006 Return how many times it was removed (0 or 1). */
1009 unpush_target (struct target_ops
*t
)
1011 struct target_ops
**cur
;
1012 struct target_ops
*tmp
;
1014 if (t
->to_stratum
== dummy_stratum
)
1015 internal_error (__FILE__
, __LINE__
,
1016 _("Attempt to unpush the dummy target"));
1018 /* Look for the specified target. Note that we assume that a target
1019 can only occur once in the target stack. */
1021 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1027 /* If we don't find target_ops, quit. Only open targets should be
1032 /* Unchain the target. */
1034 (*cur
) = (*cur
)->beneath
;
1035 tmp
->beneath
= NULL
;
1037 update_current_target ();
1039 /* Finally close the target. Note we do this after unchaining, so
1040 any target method calls from within the target_close
1041 implementation don't end up in T anymore. */
1042 target_close (t
, 0);
1050 target_close (target_stack
, 0); /* Let it clean up. */
1051 if (unpush_target (target_stack
) == 1)
1054 fprintf_unfiltered (gdb_stderr
,
1055 "pop_target couldn't find target %s\n",
1056 current_target
.to_shortname
);
1057 internal_error (__FILE__
, __LINE__
,
1058 _("failed internal consistency check"));
1062 pop_all_targets_above (enum strata above_stratum
, int quitting
)
1064 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
1066 target_close (target_stack
, quitting
);
1067 if (!unpush_target (target_stack
))
1069 fprintf_unfiltered (gdb_stderr
,
1070 "pop_all_targets couldn't find target %s\n",
1071 target_stack
->to_shortname
);
1072 internal_error (__FILE__
, __LINE__
,
1073 _("failed internal consistency check"));
1080 pop_all_targets (int quitting
)
1082 pop_all_targets_above (dummy_stratum
, quitting
);
1085 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
1088 target_is_pushed (struct target_ops
*t
)
1090 struct target_ops
**cur
;
1092 /* Check magic number. If wrong, it probably means someone changed
1093 the struct definition, but not all the places that initialize one. */
1094 if (t
->to_magic
!= OPS_MAGIC
)
1096 fprintf_unfiltered (gdb_stderr
,
1097 "Magic number of %s target struct wrong\n",
1099 internal_error (__FILE__
, __LINE__
,
1100 _("failed internal consistency check"));
1103 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1110 /* Using the objfile specified in OBJFILE, find the address for the
1111 current thread's thread-local storage with offset OFFSET. */
1113 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1115 volatile CORE_ADDR addr
= 0;
1116 struct target_ops
*target
;
1118 for (target
= current_target
.beneath
;
1120 target
= target
->beneath
)
1122 if (target
->to_get_thread_local_address
!= NULL
)
1127 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch
))
1129 ptid_t ptid
= inferior_ptid
;
1130 volatile struct gdb_exception ex
;
1132 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1136 /* Fetch the load module address for this objfile. */
1137 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch
,
1139 /* If it's 0, throw the appropriate exception. */
1141 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1142 _("TLS load module not found"));
1144 addr
= target
->to_get_thread_local_address (target
, ptid
,
1147 /* If an error occurred, print TLS related messages here. Otherwise,
1148 throw the error to some higher catcher. */
1151 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1155 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1156 error (_("Cannot find thread-local variables "
1157 "in this thread library."));
1159 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1160 if (objfile_is_library
)
1161 error (_("Cannot find shared library `%s' in dynamic"
1162 " linker's load module list"), objfile
->name
);
1164 error (_("Cannot find executable file `%s' in dynamic"
1165 " linker's load module list"), objfile
->name
);
1167 case TLS_NOT_ALLOCATED_YET_ERROR
:
1168 if (objfile_is_library
)
1169 error (_("The inferior has not yet allocated storage for"
1170 " thread-local variables in\n"
1171 "the shared library `%s'\n"
1173 objfile
->name
, target_pid_to_str (ptid
));
1175 error (_("The inferior has not yet allocated storage for"
1176 " thread-local variables in\n"
1177 "the executable `%s'\n"
1179 objfile
->name
, target_pid_to_str (ptid
));
1181 case TLS_GENERIC_ERROR
:
1182 if (objfile_is_library
)
1183 error (_("Cannot find thread-local storage for %s, "
1184 "shared library %s:\n%s"),
1185 target_pid_to_str (ptid
),
1186 objfile
->name
, ex
.message
);
1188 error (_("Cannot find thread-local storage for %s, "
1189 "executable file %s:\n%s"),
1190 target_pid_to_str (ptid
),
1191 objfile
->name
, ex
.message
);
1194 throw_exception (ex
);
1199 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1200 TLS is an ABI-specific thing. But we don't do that yet. */
1202 error (_("Cannot find thread-local variables on this target"));
1208 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1210 /* target_read_string -- read a null terminated string, up to LEN bytes,
1211 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1212 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1213 is responsible for freeing it. Return the number of bytes successfully
1217 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1219 int tlen
, origlen
, offset
, i
;
1223 int buffer_allocated
;
1225 unsigned int nbytes_read
= 0;
1227 gdb_assert (string
);
1229 /* Small for testing. */
1230 buffer_allocated
= 4;
1231 buffer
= xmalloc (buffer_allocated
);
1238 tlen
= MIN (len
, 4 - (memaddr
& 3));
1239 offset
= memaddr
& 3;
1241 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1244 /* The transfer request might have crossed the boundary to an
1245 unallocated region of memory. Retry the transfer, requesting
1249 errcode
= target_read_memory (memaddr
, buf
, 1);
1254 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1258 bytes
= bufptr
- buffer
;
1259 buffer_allocated
*= 2;
1260 buffer
= xrealloc (buffer
, buffer_allocated
);
1261 bufptr
= buffer
+ bytes
;
1264 for (i
= 0; i
< tlen
; i
++)
1266 *bufptr
++ = buf
[i
+ offset
];
1267 if (buf
[i
+ offset
] == '\000')
1269 nbytes_read
+= i
+ 1;
1276 nbytes_read
+= tlen
;
1285 struct target_section_table
*
1286 target_get_section_table (struct target_ops
*target
)
1288 struct target_ops
*t
;
1291 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1293 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1294 if (t
->to_get_section_table
!= NULL
)
1295 return (*t
->to_get_section_table
) (t
);
1300 /* Find a section containing ADDR. */
1302 struct target_section
*
1303 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1305 struct target_section_table
*table
= target_get_section_table (target
);
1306 struct target_section
*secp
;
1311 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1313 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1319 /* Read memory from the live target, even if currently inspecting a
1320 traceframe. The return is the same as that of target_read. */
1323 target_read_live_memory (enum target_object object
,
1324 ULONGEST memaddr
, gdb_byte
*myaddr
, LONGEST len
)
1327 struct cleanup
*cleanup
;
1329 /* Switch momentarily out of tfind mode so to access live memory.
1330 Note that this must not clear global state, such as the frame
1331 cache, which must still remain valid for the previous traceframe.
1332 We may be _building_ the frame cache at this point. */
1333 cleanup
= make_cleanup_restore_traceframe_number ();
1334 set_traceframe_number (-1);
1336 ret
= target_read (current_target
.beneath
, object
, NULL
,
1337 myaddr
, memaddr
, len
);
1339 do_cleanups (cleanup
);
1343 /* Using the set of read-only target sections of OPS, read live
1344 read-only memory. Note that the actual reads start from the
1345 top-most target again.
1347 For interface/parameters/return description see target.h,
1351 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1352 enum target_object object
,
1353 gdb_byte
*readbuf
, ULONGEST memaddr
,
1356 struct target_section
*secp
;
1357 struct target_section_table
*table
;
1359 secp
= target_section_by_addr (ops
, memaddr
);
1361 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1364 struct target_section
*p
;
1365 ULONGEST memend
= memaddr
+ len
;
1367 table
= target_get_section_table (ops
);
1369 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1371 if (memaddr
>= p
->addr
)
1373 if (memend
<= p
->endaddr
)
1375 /* Entire transfer is within this section. */
1376 return target_read_live_memory (object
, memaddr
,
1379 else if (memaddr
>= p
->endaddr
)
1381 /* This section ends before the transfer starts. */
1386 /* This section overlaps the transfer. Just do half. */
1387 len
= p
->endaddr
- memaddr
;
1388 return target_read_live_memory (object
, memaddr
,
1398 /* Perform a partial memory transfer.
1399 For docs see target.h, to_xfer_partial. */
1402 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1403 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1408 struct mem_region
*region
;
1409 struct inferior
*inf
;
1411 /* For accesses to unmapped overlay sections, read directly from
1412 files. Must do this first, as MEMADDR may need adjustment. */
1413 if (readbuf
!= NULL
&& overlay_debugging
)
1415 struct obj_section
*section
= find_pc_overlay (memaddr
);
1417 if (pc_in_unmapped_range (memaddr
, section
))
1419 struct target_section_table
*table
1420 = target_get_section_table (ops
);
1421 const char *section_name
= section
->the_bfd_section
->name
;
1423 memaddr
= overlay_mapped_address (memaddr
, section
);
1424 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1427 table
->sections_end
,
1432 /* Try the executable files, if "trust-readonly-sections" is set. */
1433 if (readbuf
!= NULL
&& trust_readonly
)
1435 struct target_section
*secp
;
1436 struct target_section_table
*table
;
1438 secp
= target_section_by_addr (ops
, memaddr
);
1440 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1443 table
= target_get_section_table (ops
);
1444 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1447 table
->sections_end
,
1452 /* If reading unavailable memory in the context of traceframes, and
1453 this address falls within a read-only section, fallback to
1454 reading from live memory. */
1455 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1457 VEC(mem_range_s
) *available
;
1459 /* If we fail to get the set of available memory, then the
1460 target does not support querying traceframe info, and so we
1461 attempt reading from the traceframe anyway (assuming the
1462 target implements the old QTro packet then). */
1463 if (traceframe_available_memory (&available
, memaddr
, len
))
1465 struct cleanup
*old_chain
;
1467 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1469 if (VEC_empty (mem_range_s
, available
)
1470 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1472 /* Don't read into the traceframe's available
1474 if (!VEC_empty (mem_range_s
, available
))
1476 LONGEST oldlen
= len
;
1478 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1479 gdb_assert (len
<= oldlen
);
1482 do_cleanups (old_chain
);
1484 /* This goes through the topmost target again. */
1485 res
= memory_xfer_live_readonly_partial (ops
, object
,
1486 readbuf
, memaddr
, len
);
1490 /* No use trying further, we know some memory starting
1491 at MEMADDR isn't available. */
1495 /* Don't try to read more than how much is available, in
1496 case the target implements the deprecated QTro packet to
1497 cater for older GDBs (the target's knowledge of read-only
1498 sections may be outdated by now). */
1499 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1501 do_cleanups (old_chain
);
1505 /* Try GDB's internal data cache. */
1506 region
= lookup_mem_region (memaddr
);
1507 /* region->hi == 0 means there's no upper bound. */
1508 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1511 reg_len
= region
->hi
- memaddr
;
1513 switch (region
->attrib
.mode
)
1516 if (writebuf
!= NULL
)
1521 if (readbuf
!= NULL
)
1526 /* We only support writing to flash during "load" for now. */
1527 if (writebuf
!= NULL
)
1528 error (_("Writing to flash memory forbidden in this context"));
1535 if (!ptid_equal (inferior_ptid
, null_ptid
))
1536 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1541 /* The dcache reads whole cache lines; that doesn't play well
1542 with reading from a trace buffer, because reading outside of
1543 the collected memory range fails. */
1544 && get_traceframe_number () == -1
1545 && (region
->attrib
.cache
1546 || (stack_cache_enabled_p
&& object
== TARGET_OBJECT_STACK_MEMORY
)))
1548 if (readbuf
!= NULL
)
1549 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
, readbuf
,
1552 /* FIXME drow/2006-08-09: If we're going to preserve const
1553 correctness dcache_xfer_memory should take readbuf and
1555 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
,
1564 /* If none of those methods found the memory we wanted, fall back
1565 to a target partial transfer. Normally a single call to
1566 to_xfer_partial is enough; if it doesn't recognize an object
1567 it will call the to_xfer_partial of the next target down.
1568 But for memory this won't do. Memory is the only target
1569 object which can be read from more than one valid target.
1570 A core file, for instance, could have some of memory but
1571 delegate other bits to the target below it. So, we must
1572 manually try all targets. */
1576 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1577 readbuf
, writebuf
, memaddr
, reg_len
);
1581 /* We want to continue past core files to executables, but not
1582 past a running target's memory. */
1583 if (ops
->to_has_all_memory (ops
))
1588 while (ops
!= NULL
);
1590 /* Make sure the cache gets updated no matter what - if we are writing
1591 to the stack. Even if this write is not tagged as such, we still need
1592 to update the cache. */
1597 && !region
->attrib
.cache
1598 && stack_cache_enabled_p
1599 && object
!= TARGET_OBJECT_STACK_MEMORY
)
1601 dcache_update (target_dcache
, memaddr
, (void *) writebuf
, res
);
1604 /* If we still haven't got anything, return the last error. We
1609 /* Perform a partial memory transfer. For docs see target.h,
1613 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1614 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1619 /* Zero length requests are ok and require no work. */
1623 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1624 breakpoint insns, thus hiding out from higher layers whether
1625 there are software breakpoints inserted in the code stream. */
1626 if (readbuf
!= NULL
)
1628 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
);
1630 if (res
> 0 && !show_memory_breakpoints
)
1631 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1636 struct cleanup
*old_chain
;
1638 buf
= xmalloc (len
);
1639 old_chain
= make_cleanup (xfree
, buf
);
1640 memcpy (buf
, writebuf
, len
);
1642 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1643 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
);
1645 do_cleanups (old_chain
);
1652 restore_show_memory_breakpoints (void *arg
)
1654 show_memory_breakpoints
= (uintptr_t) arg
;
1658 make_show_memory_breakpoints_cleanup (int show
)
1660 int current
= show_memory_breakpoints
;
1662 show_memory_breakpoints
= show
;
1663 return make_cleanup (restore_show_memory_breakpoints
,
1664 (void *) (uintptr_t) current
);
1667 /* For docs see target.h, to_xfer_partial. */
1670 target_xfer_partial (struct target_ops
*ops
,
1671 enum target_object object
, const char *annex
,
1672 void *readbuf
, const void *writebuf
,
1673 ULONGEST offset
, LONGEST len
)
1677 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1679 if (writebuf
&& !may_write_memory
)
1680 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1681 core_addr_to_string_nz (offset
), plongest (len
));
1683 /* If this is a memory transfer, let the memory-specific code
1684 have a look at it instead. Memory transfers are more
1686 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
)
1687 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1688 writebuf
, offset
, len
);
1691 enum target_object raw_object
= object
;
1693 /* If this is a raw memory transfer, request the normal
1694 memory object from other layers. */
1695 if (raw_object
== TARGET_OBJECT_RAW_MEMORY
)
1696 raw_object
= TARGET_OBJECT_MEMORY
;
1698 retval
= ops
->to_xfer_partial (ops
, raw_object
, annex
, readbuf
,
1699 writebuf
, offset
, len
);
1704 const unsigned char *myaddr
= NULL
;
1706 fprintf_unfiltered (gdb_stdlog
,
1707 "%s:target_xfer_partial "
1708 "(%d, %s, %s, %s, %s, %s) = %s",
1711 (annex
? annex
: "(null)"),
1712 host_address_to_string (readbuf
),
1713 host_address_to_string (writebuf
),
1714 core_addr_to_string_nz (offset
),
1715 plongest (len
), plongest (retval
));
1721 if (retval
> 0 && myaddr
!= NULL
)
1725 fputs_unfiltered (", bytes =", gdb_stdlog
);
1726 for (i
= 0; i
< retval
; i
++)
1728 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1730 if (targetdebug
< 2 && i
> 0)
1732 fprintf_unfiltered (gdb_stdlog
, " ...");
1735 fprintf_unfiltered (gdb_stdlog
, "\n");
1738 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1742 fputc_unfiltered ('\n', gdb_stdlog
);
1747 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
1748 GDB's memory at MYADDR. Returns either 0 for success or an errno value
1749 if any error occurs.
1751 If an error occurs, no guarantee is made about the contents of the data at
1752 MYADDR. In particular, the caller should not depend upon partial reads
1753 filling the buffer with good data. There is no way for the caller to know
1754 how much good data might have been transfered anyway. Callers that can
1755 deal with partial reads should call target_read (which will retry until
1756 it makes no progress, and then return how much was transferred). */
1759 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1761 /* Dispatch to the topmost target, not the flattened current_target.
1762 Memory accesses check target->to_has_(all_)memory, and the
1763 flattened target doesn't inherit those. */
1764 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1765 myaddr
, memaddr
, len
) == len
)
1771 /* Like target_read_memory, but specify explicitly that this is a read from
1772 the target's stack. This may trigger different cache behavior. */
1775 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1777 /* Dispatch to the topmost target, not the flattened current_target.
1778 Memory accesses check target->to_has_(all_)memory, and the
1779 flattened target doesn't inherit those. */
1781 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1782 myaddr
, memaddr
, len
) == len
)
1788 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1789 Returns either 0 for success or an errno value if any error occurs.
1790 If an error occurs, no guarantee is made about how much data got written.
1791 Callers that can deal with partial writes should call target_write. */
1794 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1796 /* Dispatch to the topmost target, not the flattened current_target.
1797 Memory accesses check target->to_has_(all_)memory, and the
1798 flattened target doesn't inherit those. */
1799 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1800 myaddr
, memaddr
, len
) == len
)
1806 /* Write LEN bytes from MYADDR to target raw memory at address
1807 MEMADDR. Returns either 0 for success or an errno value if any
1808 error occurs. If an error occurs, no guarantee is made about how
1809 much data got written. Callers that can deal with partial writes
1810 should call target_write. */
1813 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1815 /* Dispatch to the topmost target, not the flattened current_target.
1816 Memory accesses check target->to_has_(all_)memory, and the
1817 flattened target doesn't inherit those. */
1818 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1819 myaddr
, memaddr
, len
) == len
)
1825 /* Fetch the target's memory map. */
1828 target_memory_map (void)
1830 VEC(mem_region_s
) *result
;
1831 struct mem_region
*last_one
, *this_one
;
1833 struct target_ops
*t
;
1836 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1838 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1839 if (t
->to_memory_map
!= NULL
)
1845 result
= t
->to_memory_map (t
);
1849 qsort (VEC_address (mem_region_s
, result
),
1850 VEC_length (mem_region_s
, result
),
1851 sizeof (struct mem_region
), mem_region_cmp
);
1853 /* Check that regions do not overlap. Simultaneously assign
1854 a numbering for the "mem" commands to use to refer to
1857 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1859 this_one
->number
= ix
;
1861 if (last_one
&& last_one
->hi
> this_one
->lo
)
1863 warning (_("Overlapping regions in memory map: ignoring"));
1864 VEC_free (mem_region_s
, result
);
1867 last_one
= this_one
;
1874 target_flash_erase (ULONGEST address
, LONGEST length
)
1876 struct target_ops
*t
;
1878 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1879 if (t
->to_flash_erase
!= NULL
)
1882 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1883 hex_string (address
), phex (length
, 0));
1884 t
->to_flash_erase (t
, address
, length
);
1892 target_flash_done (void)
1894 struct target_ops
*t
;
1896 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1897 if (t
->to_flash_done
!= NULL
)
1900 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1901 t
->to_flash_done (t
);
1909 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1910 struct cmd_list_element
*c
, const char *value
)
1912 fprintf_filtered (file
,
1913 _("Mode for reading from readonly sections is %s.\n"),
1917 /* More generic transfers. */
1920 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1921 const char *annex
, gdb_byte
*readbuf
,
1922 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1924 if (object
== TARGET_OBJECT_MEMORY
1925 && ops
->deprecated_xfer_memory
!= NULL
)
1926 /* If available, fall back to the target's
1927 "deprecated_xfer_memory" method. */
1932 if (writebuf
!= NULL
)
1934 void *buffer
= xmalloc (len
);
1935 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1937 memcpy (buffer
, writebuf
, len
);
1938 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1939 1/*write*/, NULL
, ops
);
1940 do_cleanups (cleanup
);
1942 if (readbuf
!= NULL
)
1943 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1944 0/*read*/, NULL
, ops
);
1947 else if (xfered
== 0 && errno
== 0)
1948 /* "deprecated_xfer_memory" uses 0, cross checked against
1949 ERRNO as one indication of an error. */
1954 else if (ops
->beneath
!= NULL
)
1955 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1956 readbuf
, writebuf
, offset
, len
);
1961 /* The xfer_partial handler for the topmost target. Unlike the default,
1962 it does not need to handle memory specially; it just passes all
1963 requests down the stack. */
1966 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1967 const char *annex
, gdb_byte
*readbuf
,
1968 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1970 if (ops
->beneath
!= NULL
)
1971 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1972 readbuf
, writebuf
, offset
, len
);
1977 /* Target vector read/write partial wrapper functions. */
1980 target_read_partial (struct target_ops
*ops
,
1981 enum target_object object
,
1982 const char *annex
, gdb_byte
*buf
,
1983 ULONGEST offset
, LONGEST len
)
1985 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
1989 target_write_partial (struct target_ops
*ops
,
1990 enum target_object object
,
1991 const char *annex
, const gdb_byte
*buf
,
1992 ULONGEST offset
, LONGEST len
)
1994 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
1997 /* Wrappers to perform the full transfer. */
1999 /* For docs on target_read see target.h. */
2002 target_read (struct target_ops
*ops
,
2003 enum target_object object
,
2004 const char *annex
, gdb_byte
*buf
,
2005 ULONGEST offset
, LONGEST len
)
2009 while (xfered
< len
)
2011 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
2012 (gdb_byte
*) buf
+ xfered
,
2013 offset
+ xfered
, len
- xfered
);
2015 /* Call an observer, notifying them of the xfer progress? */
2026 /* Assuming that the entire [begin, end) range of memory cannot be
2027 read, try to read whatever subrange is possible to read.
2029 The function returns, in RESULT, either zero or one memory block.
2030 If there's a readable subrange at the beginning, it is completely
2031 read and returned. Any further readable subrange will not be read.
2032 Otherwise, if there's a readable subrange at the end, it will be
2033 completely read and returned. Any readable subranges before it
2034 (obviously, not starting at the beginning), will be ignored. In
2035 other cases -- either no readable subrange, or readable subrange(s)
2036 that is neither at the beginning, or end, nothing is returned.
2038 The purpose of this function is to handle a read across a boundary
2039 of accessible memory in a case when memory map is not available.
2040 The above restrictions are fine for this case, but will give
2041 incorrect results if the memory is 'patchy'. However, supporting
2042 'patchy' memory would require trying to read every single byte,
2043 and it seems unacceptable solution. Explicit memory map is
2044 recommended for this case -- and target_read_memory_robust will
2045 take care of reading multiple ranges then. */
2048 read_whatever_is_readable (struct target_ops
*ops
,
2049 ULONGEST begin
, ULONGEST end
,
2050 VEC(memory_read_result_s
) **result
)
2052 gdb_byte
*buf
= xmalloc (end
- begin
);
2053 ULONGEST current_begin
= begin
;
2054 ULONGEST current_end
= end
;
2056 memory_read_result_s r
;
2058 /* If we previously failed to read 1 byte, nothing can be done here. */
2059 if (end
- begin
<= 1)
2065 /* Check that either first or the last byte is readable, and give up
2066 if not. This heuristic is meant to permit reading accessible memory
2067 at the boundary of accessible region. */
2068 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2069 buf
, begin
, 1) == 1)
2074 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2075 buf
+ (end
-begin
) - 1, end
- 1, 1) == 1)
2086 /* Loop invariant is that the [current_begin, current_end) was previously
2087 found to be not readable as a whole.
2089 Note loop condition -- if the range has 1 byte, we can't divide the range
2090 so there's no point trying further. */
2091 while (current_end
- current_begin
> 1)
2093 ULONGEST first_half_begin
, first_half_end
;
2094 ULONGEST second_half_begin
, second_half_end
;
2096 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2100 first_half_begin
= current_begin
;
2101 first_half_end
= middle
;
2102 second_half_begin
= middle
;
2103 second_half_end
= current_end
;
2107 first_half_begin
= middle
;
2108 first_half_end
= current_end
;
2109 second_half_begin
= current_begin
;
2110 second_half_end
= middle
;
2113 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2114 buf
+ (first_half_begin
- begin
),
2116 first_half_end
- first_half_begin
);
2118 if (xfer
== first_half_end
- first_half_begin
)
2120 /* This half reads up fine. So, the error must be in the
2122 current_begin
= second_half_begin
;
2123 current_end
= second_half_end
;
2127 /* This half is not readable. Because we've tried one byte, we
2128 know some part of this half if actually redable. Go to the next
2129 iteration to divide again and try to read.
2131 We don't handle the other half, because this function only tries
2132 to read a single readable subrange. */
2133 current_begin
= first_half_begin
;
2134 current_end
= first_half_end
;
2140 /* The [begin, current_begin) range has been read. */
2142 r
.end
= current_begin
;
2147 /* The [current_end, end) range has been read. */
2148 LONGEST rlen
= end
- current_end
;
2150 r
.data
= xmalloc (rlen
);
2151 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2152 r
.begin
= current_end
;
2156 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2160 free_memory_read_result_vector (void *x
)
2162 VEC(memory_read_result_s
) *v
= x
;
2163 memory_read_result_s
*current
;
2166 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2168 xfree (current
->data
);
2170 VEC_free (memory_read_result_s
, v
);
2173 VEC(memory_read_result_s
) *
2174 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2176 VEC(memory_read_result_s
) *result
= 0;
2179 while (xfered
< len
)
2181 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2184 /* If there is no explicit region, a fake one should be created. */
2185 gdb_assert (region
);
2187 if (region
->hi
== 0)
2188 rlen
= len
- xfered
;
2190 rlen
= region
->hi
- offset
;
2192 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2194 /* Cannot read this region. Note that we can end up here only
2195 if the region is explicitly marked inaccessible, or
2196 'inaccessible-by-default' is in effect. */
2201 LONGEST to_read
= min (len
- xfered
, rlen
);
2202 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2204 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2205 (gdb_byte
*) buffer
,
2206 offset
+ xfered
, to_read
);
2207 /* Call an observer, notifying them of the xfer progress? */
2210 /* Got an error reading full chunk. See if maybe we can read
2213 read_whatever_is_readable (ops
, offset
+ xfered
,
2214 offset
+ xfered
+ to_read
, &result
);
2219 struct memory_read_result r
;
2221 r
.begin
= offset
+ xfered
;
2222 r
.end
= r
.begin
+ xfer
;
2223 VEC_safe_push (memory_read_result_s
, result
, &r
);
2233 /* An alternative to target_write with progress callbacks. */
2236 target_write_with_progress (struct target_ops
*ops
,
2237 enum target_object object
,
2238 const char *annex
, const gdb_byte
*buf
,
2239 ULONGEST offset
, LONGEST len
,
2240 void (*progress
) (ULONGEST
, void *), void *baton
)
2244 /* Give the progress callback a chance to set up. */
2246 (*progress
) (0, baton
);
2248 while (xfered
< len
)
2250 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
2251 (gdb_byte
*) buf
+ xfered
,
2252 offset
+ xfered
, len
- xfered
);
2260 (*progress
) (xfer
, baton
);
2268 /* For docs on target_write see target.h. */
2271 target_write (struct target_ops
*ops
,
2272 enum target_object object
,
2273 const char *annex
, const gdb_byte
*buf
,
2274 ULONGEST offset
, LONGEST len
)
2276 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2280 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2281 the size of the transferred data. PADDING additional bytes are
2282 available in *BUF_P. This is a helper function for
2283 target_read_alloc; see the declaration of that function for more
2287 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2288 const char *annex
, gdb_byte
**buf_p
, int padding
)
2290 size_t buf_alloc
, buf_pos
;
2294 /* This function does not have a length parameter; it reads the
2295 entire OBJECT). Also, it doesn't support objects fetched partly
2296 from one target and partly from another (in a different stratum,
2297 e.g. a core file and an executable). Both reasons make it
2298 unsuitable for reading memory. */
2299 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2301 /* Start by reading up to 4K at a time. The target will throttle
2302 this number down if necessary. */
2304 buf
= xmalloc (buf_alloc
);
2308 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2309 buf_pos
, buf_alloc
- buf_pos
- padding
);
2312 /* An error occurred. */
2318 /* Read all there was. */
2328 /* If the buffer is filling up, expand it. */
2329 if (buf_alloc
< buf_pos
* 2)
2332 buf
= xrealloc (buf
, buf_alloc
);
2339 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2340 the size of the transferred data. See the declaration in "target.h"
2341 function for more information about the return value. */
2344 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2345 const char *annex
, gdb_byte
**buf_p
)
2347 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2350 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2351 returned as a string, allocated using xmalloc. If an error occurs
2352 or the transfer is unsupported, NULL is returned. Empty objects
2353 are returned as allocated but empty strings. A warning is issued
2354 if the result contains any embedded NUL bytes. */
2357 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2361 LONGEST i
, transferred
;
2363 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2365 if (transferred
< 0)
2368 if (transferred
== 0)
2369 return xstrdup ("");
2371 buffer
[transferred
] = 0;
2373 /* Check for embedded NUL bytes; but allow trailing NULs. */
2374 for (i
= strlen (buffer
); i
< transferred
; i
++)
2377 warning (_("target object %d, annex %s, "
2378 "contained unexpected null characters"),
2379 (int) object
, annex
? annex
: "(none)");
2383 return (char *) buffer
;
2386 /* Memory transfer methods. */
2389 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2392 /* This method is used to read from an alternate, non-current
2393 target. This read must bypass the overlay support (as symbols
2394 don't match this target), and GDB's internal cache (wrong cache
2395 for this target). */
2396 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2398 memory_error (EIO
, addr
);
2402 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2403 int len
, enum bfd_endian byte_order
)
2405 gdb_byte buf
[sizeof (ULONGEST
)];
2407 gdb_assert (len
<= sizeof (buf
));
2408 get_target_memory (ops
, addr
, buf
, len
);
2409 return extract_unsigned_integer (buf
, len
, byte_order
);
2413 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2414 struct bp_target_info
*bp_tgt
)
2416 if (!may_insert_breakpoints
)
2418 warning (_("May not insert breakpoints"));
2422 return (*current_target
.to_insert_breakpoint
) (gdbarch
, bp_tgt
);
2426 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2427 struct bp_target_info
*bp_tgt
)
2429 /* This is kind of a weird case to handle, but the permission might
2430 have been changed after breakpoints were inserted - in which case
2431 we should just take the user literally and assume that any
2432 breakpoints should be left in place. */
2433 if (!may_insert_breakpoints
)
2435 warning (_("May not remove breakpoints"));
2439 return (*current_target
.to_remove_breakpoint
) (gdbarch
, bp_tgt
);
2443 target_info (char *args
, int from_tty
)
2445 struct target_ops
*t
;
2446 int has_all_mem
= 0;
2448 if (symfile_objfile
!= NULL
)
2449 printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile
->name
);
2451 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2453 if (!(*t
->to_has_memory
) (t
))
2456 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2459 printf_unfiltered (_("\tWhile running this, "
2460 "GDB does not access memory from...\n"));
2461 printf_unfiltered ("%s:\n", t
->to_longname
);
2462 (t
->to_files_info
) (t
);
2463 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2467 /* This function is called before any new inferior is created, e.g.
2468 by running a program, attaching, or connecting to a target.
2469 It cleans up any state from previous invocations which might
2470 change between runs. This is a subset of what target_preopen
2471 resets (things which might change between targets). */
2474 target_pre_inferior (int from_tty
)
2476 /* Clear out solib state. Otherwise the solib state of the previous
2477 inferior might have survived and is entirely wrong for the new
2478 target. This has been observed on GNU/Linux using glibc 2.3. How
2490 Cannot access memory at address 0xdeadbeef
2493 /* In some OSs, the shared library list is the same/global/shared
2494 across inferiors. If code is shared between processes, so are
2495 memory regions and features. */
2496 if (!gdbarch_has_global_solist (target_gdbarch
))
2498 no_shared_libraries (NULL
, from_tty
);
2500 invalidate_target_mem_regions ();
2502 target_clear_description ();
2505 agent_capability_invalidate ();
2508 /* Callback for iterate_over_inferiors. Gets rid of the given
2512 dispose_inferior (struct inferior
*inf
, void *args
)
2514 struct thread_info
*thread
;
2516 thread
= any_thread_of_process (inf
->pid
);
2519 switch_to_thread (thread
->ptid
);
2521 /* Core inferiors actually should be detached, not killed. */
2522 if (target_has_execution
)
2525 target_detach (NULL
, 0);
2531 /* This is to be called by the open routine before it does
2535 target_preopen (int from_tty
)
2539 if (have_inferiors ())
2542 || !have_live_inferiors ()
2543 || query (_("A program is being debugged already. Kill it? ")))
2544 iterate_over_inferiors (dispose_inferior
, NULL
);
2546 error (_("Program not killed."));
2549 /* Calling target_kill may remove the target from the stack. But if
2550 it doesn't (which seems like a win for UDI), remove it now. */
2551 /* Leave the exec target, though. The user may be switching from a
2552 live process to a core of the same program. */
2553 pop_all_targets_above (file_stratum
, 0);
2555 target_pre_inferior (from_tty
);
2558 /* Detach a target after doing deferred register stores. */
2561 target_detach (char *args
, int from_tty
)
2563 struct target_ops
* t
;
2565 if (gdbarch_has_global_breakpoints (target_gdbarch
))
2566 /* Don't remove global breakpoints here. They're removed on
2567 disconnection from the target. */
2570 /* If we're in breakpoints-always-inserted mode, have to remove
2571 them before detaching. */
2572 remove_breakpoints_pid (PIDGET (inferior_ptid
));
2574 prepare_for_detach ();
2576 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2578 if (t
->to_detach
!= NULL
)
2580 t
->to_detach (t
, args
, from_tty
);
2582 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2588 internal_error (__FILE__
, __LINE__
, _("could not find a target to detach"));
2592 target_disconnect (char *args
, int from_tty
)
2594 struct target_ops
*t
;
2596 /* If we're in breakpoints-always-inserted mode or if breakpoints
2597 are global across processes, we have to remove them before
2599 remove_breakpoints ();
2601 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2602 if (t
->to_disconnect
!= NULL
)
2605 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2607 t
->to_disconnect (t
, args
, from_tty
);
2615 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2617 struct target_ops
*t
;
2619 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2621 if (t
->to_wait
!= NULL
)
2623 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2627 char *status_string
;
2629 status_string
= target_waitstatus_to_string (status
);
2630 fprintf_unfiltered (gdb_stdlog
,
2631 "target_wait (%d, status) = %d, %s\n",
2632 PIDGET (ptid
), PIDGET (retval
),
2634 xfree (status_string
);
2645 target_pid_to_str (ptid_t ptid
)
2647 struct target_ops
*t
;
2649 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2651 if (t
->to_pid_to_str
!= NULL
)
2652 return (*t
->to_pid_to_str
) (t
, ptid
);
2655 return normal_pid_to_str (ptid
);
2659 target_thread_name (struct thread_info
*info
)
2661 struct target_ops
*t
;
2663 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2665 if (t
->to_thread_name
!= NULL
)
2666 return (*t
->to_thread_name
) (info
);
2673 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2675 struct target_ops
*t
;
2677 target_dcache_invalidate ();
2679 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2681 if (t
->to_resume
!= NULL
)
2683 t
->to_resume (t
, ptid
, step
, signal
);
2685 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2687 step
? "step" : "continue",
2688 gdb_signal_to_name (signal
));
2690 registers_changed_ptid (ptid
);
2691 set_executing (ptid
, 1);
2692 set_running (ptid
, 1);
2693 clear_inline_frame_state (ptid
);
2702 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2704 struct target_ops
*t
;
2706 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2708 if (t
->to_pass_signals
!= NULL
)
2714 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2717 for (i
= 0; i
< numsigs
; i
++)
2718 if (pass_signals
[i
])
2719 fprintf_unfiltered (gdb_stdlog
, " %s",
2720 gdb_signal_to_name (i
));
2722 fprintf_unfiltered (gdb_stdlog
, " })\n");
2725 (*t
->to_pass_signals
) (numsigs
, pass_signals
);
2732 target_program_signals (int numsigs
, unsigned char *program_signals
)
2734 struct target_ops
*t
;
2736 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2738 if (t
->to_program_signals
!= NULL
)
2744 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2747 for (i
= 0; i
< numsigs
; i
++)
2748 if (program_signals
[i
])
2749 fprintf_unfiltered (gdb_stdlog
, " %s",
2750 gdb_signal_to_name (i
));
2752 fprintf_unfiltered (gdb_stdlog
, " })\n");
2755 (*t
->to_program_signals
) (numsigs
, program_signals
);
2761 /* Look through the list of possible targets for a target that can
2765 target_follow_fork (int follow_child
)
2767 struct target_ops
*t
;
2769 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2771 if (t
->to_follow_fork
!= NULL
)
2773 int retval
= t
->to_follow_fork (t
, follow_child
);
2776 fprintf_unfiltered (gdb_stdlog
, "target_follow_fork (%d) = %d\n",
2777 follow_child
, retval
);
2782 /* Some target returned a fork event, but did not know how to follow it. */
2783 internal_error (__FILE__
, __LINE__
,
2784 _("could not find a target to follow fork"));
2788 target_mourn_inferior (void)
2790 struct target_ops
*t
;
2792 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2794 if (t
->to_mourn_inferior
!= NULL
)
2796 t
->to_mourn_inferior (t
);
2798 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2800 /* We no longer need to keep handles on any of the object files.
2801 Make sure to release them to avoid unnecessarily locking any
2802 of them while we're not actually debugging. */
2803 bfd_cache_close_all ();
2809 internal_error (__FILE__
, __LINE__
,
2810 _("could not find a target to follow mourn inferior"));
2813 /* Look for a target which can describe architectural features, starting
2814 from TARGET. If we find one, return its description. */
2816 const struct target_desc
*
2817 target_read_description (struct target_ops
*target
)
2819 struct target_ops
*t
;
2821 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2822 if (t
->to_read_description
!= NULL
)
2824 const struct target_desc
*tdesc
;
2826 tdesc
= t
->to_read_description (t
);
2834 /* The default implementation of to_search_memory.
2835 This implements a basic search of memory, reading target memory and
2836 performing the search here (as opposed to performing the search in on the
2837 target side with, for example, gdbserver). */
2840 simple_search_memory (struct target_ops
*ops
,
2841 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2842 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2843 CORE_ADDR
*found_addrp
)
2845 /* NOTE: also defined in find.c testcase. */
2846 #define SEARCH_CHUNK_SIZE 16000
2847 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2848 /* Buffer to hold memory contents for searching. */
2849 gdb_byte
*search_buf
;
2850 unsigned search_buf_size
;
2851 struct cleanup
*old_cleanups
;
2853 search_buf_size
= chunk_size
+ pattern_len
- 1;
2855 /* No point in trying to allocate a buffer larger than the search space. */
2856 if (search_space_len
< search_buf_size
)
2857 search_buf_size
= search_space_len
;
2859 search_buf
= malloc (search_buf_size
);
2860 if (search_buf
== NULL
)
2861 error (_("Unable to allocate memory to perform the search."));
2862 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2864 /* Prime the search buffer. */
2866 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2867 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2869 warning (_("Unable to access target memory at %s, halting search."),
2870 hex_string (start_addr
));
2871 do_cleanups (old_cleanups
);
2875 /* Perform the search.
2877 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2878 When we've scanned N bytes we copy the trailing bytes to the start and
2879 read in another N bytes. */
2881 while (search_space_len
>= pattern_len
)
2883 gdb_byte
*found_ptr
;
2884 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2886 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2887 pattern
, pattern_len
);
2889 if (found_ptr
!= NULL
)
2891 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2893 *found_addrp
= found_addr
;
2894 do_cleanups (old_cleanups
);
2898 /* Not found in this chunk, skip to next chunk. */
2900 /* Don't let search_space_len wrap here, it's unsigned. */
2901 if (search_space_len
>= chunk_size
)
2902 search_space_len
-= chunk_size
;
2904 search_space_len
= 0;
2906 if (search_space_len
>= pattern_len
)
2908 unsigned keep_len
= search_buf_size
- chunk_size
;
2909 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2912 /* Copy the trailing part of the previous iteration to the front
2913 of the buffer for the next iteration. */
2914 gdb_assert (keep_len
== pattern_len
- 1);
2915 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2917 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2919 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2920 search_buf
+ keep_len
, read_addr
,
2921 nr_to_read
) != nr_to_read
)
2923 warning (_("Unable to access target "
2924 "memory at %s, halting search."),
2925 hex_string (read_addr
));
2926 do_cleanups (old_cleanups
);
2930 start_addr
+= chunk_size
;
2936 do_cleanups (old_cleanups
);
2940 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2941 sequence of bytes in PATTERN with length PATTERN_LEN.
2943 The result is 1 if found, 0 if not found, and -1 if there was an error
2944 requiring halting of the search (e.g. memory read error).
2945 If the pattern is found the address is recorded in FOUND_ADDRP. */
2948 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2949 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2950 CORE_ADDR
*found_addrp
)
2952 struct target_ops
*t
;
2955 /* We don't use INHERIT to set current_target.to_search_memory,
2956 so we have to scan the target stack and handle targetdebug
2960 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2961 hex_string (start_addr
));
2963 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2964 if (t
->to_search_memory
!= NULL
)
2969 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2970 pattern
, pattern_len
, found_addrp
);
2974 /* If a special version of to_search_memory isn't available, use the
2976 found
= simple_search_memory (current_target
.beneath
,
2977 start_addr
, search_space_len
,
2978 pattern
, pattern_len
, found_addrp
);
2982 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2987 /* Look through the currently pushed targets. If none of them will
2988 be able to restart the currently running process, issue an error
2992 target_require_runnable (void)
2994 struct target_ops
*t
;
2996 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2998 /* If this target knows how to create a new program, then
2999 assume we will still be able to after killing the current
3000 one. Either killing and mourning will not pop T, or else
3001 find_default_run_target will find it again. */
3002 if (t
->to_create_inferior
!= NULL
)
3005 /* Do not worry about thread_stratum targets that can not
3006 create inferiors. Assume they will be pushed again if
3007 necessary, and continue to the process_stratum. */
3008 if (t
->to_stratum
== thread_stratum
3009 || t
->to_stratum
== arch_stratum
)
3012 error (_("The \"%s\" target does not support \"run\". "
3013 "Try \"help target\" or \"continue\"."),
3017 /* This function is only called if the target is running. In that
3018 case there should have been a process_stratum target and it
3019 should either know how to create inferiors, or not... */
3020 internal_error (__FILE__
, __LINE__
, _("No targets found"));
3023 /* Look through the list of possible targets for a target that can
3024 execute a run or attach command without any other data. This is
3025 used to locate the default process stratum.
3027 If DO_MESG is not NULL, the result is always valid (error() is
3028 called for errors); else, return NULL on error. */
3030 static struct target_ops
*
3031 find_default_run_target (char *do_mesg
)
3033 struct target_ops
**t
;
3034 struct target_ops
*runable
= NULL
;
3039 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3042 if ((*t
)->to_can_run
&& target_can_run (*t
))
3052 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3061 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3063 struct target_ops
*t
;
3065 t
= find_default_run_target ("attach");
3066 (t
->to_attach
) (t
, args
, from_tty
);
3071 find_default_create_inferior (struct target_ops
*ops
,
3072 char *exec_file
, char *allargs
, char **env
,
3075 struct target_ops
*t
;
3077 t
= find_default_run_target ("run");
3078 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3083 find_default_can_async_p (void)
3085 struct target_ops
*t
;
3087 /* This may be called before the target is pushed on the stack;
3088 look for the default process stratum. If there's none, gdb isn't
3089 configured with a native debugger, and target remote isn't
3091 t
= find_default_run_target (NULL
);
3092 if (t
&& t
->to_can_async_p
)
3093 return (t
->to_can_async_p
) ();
3098 find_default_is_async_p (void)
3100 struct target_ops
*t
;
3102 /* This may be called before the target is pushed on the stack;
3103 look for the default process stratum. If there's none, gdb isn't
3104 configured with a native debugger, and target remote isn't
3106 t
= find_default_run_target (NULL
);
3107 if (t
&& t
->to_is_async_p
)
3108 return (t
->to_is_async_p
) ();
3113 find_default_supports_non_stop (void)
3115 struct target_ops
*t
;
3117 t
= find_default_run_target (NULL
);
3118 if (t
&& t
->to_supports_non_stop
)
3119 return (t
->to_supports_non_stop
) ();
3124 target_supports_non_stop (void)
3126 struct target_ops
*t
;
3128 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3129 if (t
->to_supports_non_stop
)
3130 return t
->to_supports_non_stop ();
3135 /* Implement the "info proc" command. */
3138 target_info_proc (char *args
, enum info_proc_what what
)
3140 struct target_ops
*t
;
3142 /* If we're already connected to something that can get us OS
3143 related data, use it. Otherwise, try using the native
3145 if (current_target
.to_stratum
>= process_stratum
)
3146 t
= current_target
.beneath
;
3148 t
= find_default_run_target (NULL
);
3150 for (; t
!= NULL
; t
= t
->beneath
)
3152 if (t
->to_info_proc
!= NULL
)
3154 t
->to_info_proc (t
, args
, what
);
3157 fprintf_unfiltered (gdb_stdlog
,
3158 "target_info_proc (\"%s\", %d)\n", args
, what
);
3164 error (_("Not supported on this target."));
3168 find_default_supports_disable_randomization (void)
3170 struct target_ops
*t
;
3172 t
= find_default_run_target (NULL
);
3173 if (t
&& t
->to_supports_disable_randomization
)
3174 return (t
->to_supports_disable_randomization
) ();
3179 target_supports_disable_randomization (void)
3181 struct target_ops
*t
;
3183 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3184 if (t
->to_supports_disable_randomization
)
3185 return t
->to_supports_disable_randomization ();
3191 target_get_osdata (const char *type
)
3193 struct target_ops
*t
;
3195 /* If we're already connected to something that can get us OS
3196 related data, use it. Otherwise, try using the native
3198 if (current_target
.to_stratum
>= process_stratum
)
3199 t
= current_target
.beneath
;
3201 t
= find_default_run_target ("get OS data");
3206 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3209 /* Determine the current address space of thread PTID. */
3211 struct address_space
*
3212 target_thread_address_space (ptid_t ptid
)
3214 struct address_space
*aspace
;
3215 struct inferior
*inf
;
3216 struct target_ops
*t
;
3218 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3220 if (t
->to_thread_address_space
!= NULL
)
3222 aspace
= t
->to_thread_address_space (t
, ptid
);
3223 gdb_assert (aspace
);
3226 fprintf_unfiltered (gdb_stdlog
,
3227 "target_thread_address_space (%s) = %d\n",
3228 target_pid_to_str (ptid
),
3229 address_space_num (aspace
));
3234 /* Fall-back to the "main" address space of the inferior. */
3235 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3237 if (inf
== NULL
|| inf
->aspace
== NULL
)
3238 internal_error (__FILE__
, __LINE__
,
3239 _("Can't determine the current "
3240 "address space of thread %s\n"),
3241 target_pid_to_str (ptid
));
3247 /* Target file operations. */
3249 static struct target_ops
*
3250 default_fileio_target (void)
3252 /* If we're already connected to something that can perform
3253 file I/O, use it. Otherwise, try using the native target. */
3254 if (current_target
.to_stratum
>= process_stratum
)
3255 return current_target
.beneath
;
3257 return find_default_run_target ("file I/O");
3260 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3261 target file descriptor, or -1 if an error occurs (and set
3264 target_fileio_open (const char *filename
, int flags
, int mode
,
3267 struct target_ops
*t
;
3269 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3271 if (t
->to_fileio_open
!= NULL
)
3273 int fd
= t
->to_fileio_open (filename
, flags
, mode
, target_errno
);
3276 fprintf_unfiltered (gdb_stdlog
,
3277 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3278 filename
, flags
, mode
,
3279 fd
, fd
!= -1 ? 0 : *target_errno
);
3284 *target_errno
= FILEIO_ENOSYS
;
3288 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3289 Return the number of bytes written, or -1 if an error occurs
3290 (and set *TARGET_ERRNO). */
3292 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3293 ULONGEST offset
, int *target_errno
)
3295 struct target_ops
*t
;
3297 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3299 if (t
->to_fileio_pwrite
!= NULL
)
3301 int ret
= t
->to_fileio_pwrite (fd
, write_buf
, len
, offset
,
3305 fprintf_unfiltered (gdb_stdlog
,
3306 "target_fileio_pwrite (%d,...,%d,%s) "
3308 fd
, len
, pulongest (offset
),
3309 ret
, ret
!= -1 ? 0 : *target_errno
);
3314 *target_errno
= FILEIO_ENOSYS
;
3318 /* Read up to LEN bytes FD on the target into READ_BUF.
3319 Return the number of bytes read, or -1 if an error occurs
3320 (and set *TARGET_ERRNO). */
3322 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3323 ULONGEST offset
, int *target_errno
)
3325 struct target_ops
*t
;
3327 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3329 if (t
->to_fileio_pread
!= NULL
)
3331 int ret
= t
->to_fileio_pread (fd
, read_buf
, len
, offset
,
3335 fprintf_unfiltered (gdb_stdlog
,
3336 "target_fileio_pread (%d,...,%d,%s) "
3338 fd
, len
, pulongest (offset
),
3339 ret
, ret
!= -1 ? 0 : *target_errno
);
3344 *target_errno
= FILEIO_ENOSYS
;
3348 /* Close FD on the target. Return 0, or -1 if an error occurs
3349 (and set *TARGET_ERRNO). */
3351 target_fileio_close (int fd
, int *target_errno
)
3353 struct target_ops
*t
;
3355 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3357 if (t
->to_fileio_close
!= NULL
)
3359 int ret
= t
->to_fileio_close (fd
, target_errno
);
3362 fprintf_unfiltered (gdb_stdlog
,
3363 "target_fileio_close (%d) = %d (%d)\n",
3364 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3369 *target_errno
= FILEIO_ENOSYS
;
3373 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3374 occurs (and set *TARGET_ERRNO). */
3376 target_fileio_unlink (const char *filename
, int *target_errno
)
3378 struct target_ops
*t
;
3380 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3382 if (t
->to_fileio_unlink
!= NULL
)
3384 int ret
= t
->to_fileio_unlink (filename
, target_errno
);
3387 fprintf_unfiltered (gdb_stdlog
,
3388 "target_fileio_unlink (%s) = %d (%d)\n",
3389 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3394 *target_errno
= FILEIO_ENOSYS
;
3398 /* Read value of symbolic link FILENAME on the target. Return a
3399 null-terminated string allocated via xmalloc, or NULL if an error
3400 occurs (and set *TARGET_ERRNO). */
3402 target_fileio_readlink (const char *filename
, int *target_errno
)
3404 struct target_ops
*t
;
3406 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3408 if (t
->to_fileio_readlink
!= NULL
)
3410 char *ret
= t
->to_fileio_readlink (filename
, target_errno
);
3413 fprintf_unfiltered (gdb_stdlog
,
3414 "target_fileio_readlink (%s) = %s (%d)\n",
3415 filename
, ret
? ret
: "(nil)",
3416 ret
? 0 : *target_errno
);
3421 *target_errno
= FILEIO_ENOSYS
;
3426 target_fileio_close_cleanup (void *opaque
)
3428 int fd
= *(int *) opaque
;
3431 target_fileio_close (fd
, &target_errno
);
3434 /* Read target file FILENAME. Store the result in *BUF_P and
3435 return the size of the transferred data. PADDING additional bytes are
3436 available in *BUF_P. This is a helper function for
3437 target_fileio_read_alloc; see the declaration of that function for more
3441 target_fileio_read_alloc_1 (const char *filename
,
3442 gdb_byte
**buf_p
, int padding
)
3444 struct cleanup
*close_cleanup
;
3445 size_t buf_alloc
, buf_pos
;
3451 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3455 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3457 /* Start by reading up to 4K at a time. The target will throttle
3458 this number down if necessary. */
3460 buf
= xmalloc (buf_alloc
);
3464 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3465 buf_alloc
- buf_pos
- padding
, buf_pos
,
3469 /* An error occurred. */
3470 do_cleanups (close_cleanup
);
3476 /* Read all there was. */
3477 do_cleanups (close_cleanup
);
3487 /* If the buffer is filling up, expand it. */
3488 if (buf_alloc
< buf_pos
* 2)
3491 buf
= xrealloc (buf
, buf_alloc
);
3498 /* Read target file FILENAME. Store the result in *BUF_P and return
3499 the size of the transferred data. See the declaration in "target.h"
3500 function for more information about the return value. */
3503 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3505 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3508 /* Read target file FILENAME. The result is NUL-terminated and
3509 returned as a string, allocated using xmalloc. If an error occurs
3510 or the transfer is unsupported, NULL is returned. Empty objects
3511 are returned as allocated but empty strings. A warning is issued
3512 if the result contains any embedded NUL bytes. */
3515 target_fileio_read_stralloc (const char *filename
)
3518 LONGEST i
, transferred
;
3520 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3522 if (transferred
< 0)
3525 if (transferred
== 0)
3526 return xstrdup ("");
3528 buffer
[transferred
] = 0;
3530 /* Check for embedded NUL bytes; but allow trailing NULs. */
3531 for (i
= strlen (buffer
); i
< transferred
; i
++)
3534 warning (_("target file %s "
3535 "contained unexpected null characters"),
3540 return (char *) buffer
;
3545 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3547 return (len
<= gdbarch_ptr_bit (target_gdbarch
) / TARGET_CHAR_BIT
);
3551 default_watchpoint_addr_within_range (struct target_ops
*target
,
3553 CORE_ADDR start
, int length
)
3555 return addr
>= start
&& addr
< start
+ length
;
3558 static struct gdbarch
*
3559 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3561 return target_gdbarch
;
3577 return_minus_one (void)
3582 /* Find a single runnable target in the stack and return it. If for
3583 some reason there is more than one, return NULL. */
3586 find_run_target (void)
3588 struct target_ops
**t
;
3589 struct target_ops
*runable
= NULL
;
3594 for (t
= target_structs
; t
< target_structs
+ target_struct_size
; ++t
)
3596 if ((*t
)->to_can_run
&& target_can_run (*t
))
3603 return (count
== 1 ? runable
: NULL
);
3607 * Find the next target down the stack from the specified target.
3611 find_target_beneath (struct target_ops
*t
)
3617 /* The inferior process has died. Long live the inferior! */
3620 generic_mourn_inferior (void)
3624 ptid
= inferior_ptid
;
3625 inferior_ptid
= null_ptid
;
3627 /* Mark breakpoints uninserted in case something tries to delete a
3628 breakpoint while we delete the inferior's threads (which would
3629 fail, since the inferior is long gone). */
3630 mark_breakpoints_out ();
3632 if (!ptid_equal (ptid
, null_ptid
))
3634 int pid
= ptid_get_pid (ptid
);
3635 exit_inferior (pid
);
3638 /* Note this wipes step-resume breakpoints, so needs to be done
3639 after exit_inferior, which ends up referencing the step-resume
3640 breakpoints through clear_thread_inferior_resources. */
3641 breakpoint_init_inferior (inf_exited
);
3643 registers_changed ();
3645 reopen_exec_file ();
3646 reinit_frame_cache ();
3648 if (deprecated_detach_hook
)
3649 deprecated_detach_hook ();
3652 /* Convert a normal process ID to a string. Returns the string in a
3656 normal_pid_to_str (ptid_t ptid
)
3658 static char buf
[32];
3660 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3665 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3667 return normal_pid_to_str (ptid
);
3670 /* Error-catcher for target_find_memory_regions. */
3672 dummy_find_memory_regions (find_memory_region_ftype ignore1
, void *ignore2
)
3674 error (_("Command not implemented for this target."));
3678 /* Error-catcher for target_make_corefile_notes. */
3680 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
3682 error (_("Command not implemented for this target."));
3686 /* Error-catcher for target_get_bookmark. */
3688 dummy_get_bookmark (char *ignore1
, int ignore2
)
3694 /* Error-catcher for target_goto_bookmark. */
3696 dummy_goto_bookmark (gdb_byte
*ignore
, int from_tty
)
3701 /* Set up the handful of non-empty slots needed by the dummy target
3705 init_dummy_target (void)
3707 dummy_target
.to_shortname
= "None";
3708 dummy_target
.to_longname
= "None";
3709 dummy_target
.to_doc
= "";
3710 dummy_target
.to_attach
= find_default_attach
;
3711 dummy_target
.to_detach
=
3712 (void (*)(struct target_ops
*, char *, int))target_ignore
;
3713 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3714 dummy_target
.to_can_async_p
= find_default_can_async_p
;
3715 dummy_target
.to_is_async_p
= find_default_is_async_p
;
3716 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3717 dummy_target
.to_supports_disable_randomization
3718 = find_default_supports_disable_randomization
;
3719 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3720 dummy_target
.to_stratum
= dummy_stratum
;
3721 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
3722 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
3723 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
3724 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
3725 dummy_target
.to_xfer_partial
= default_xfer_partial
;
3726 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3727 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3728 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3729 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3730 dummy_target
.to_has_execution
3731 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3732 dummy_target
.to_stopped_by_watchpoint
= return_zero
;
3733 dummy_target
.to_stopped_data_address
=
3734 (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
;
3735 dummy_target
.to_magic
= OPS_MAGIC
;
3739 debug_to_open (char *args
, int from_tty
)
3741 debug_target
.to_open (args
, from_tty
);
3743 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3747 target_close (struct target_ops
*targ
, int quitting
)
3749 if (targ
->to_xclose
!= NULL
)
3750 targ
->to_xclose (targ
, quitting
);
3751 else if (targ
->to_close
!= NULL
)
3752 targ
->to_close (quitting
);
3755 fprintf_unfiltered (gdb_stdlog
, "target_close (%d)\n", quitting
);
3759 target_attach (char *args
, int from_tty
)
3761 struct target_ops
*t
;
3763 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3765 if (t
->to_attach
!= NULL
)
3767 t
->to_attach (t
, args
, from_tty
);
3769 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3775 internal_error (__FILE__
, __LINE__
,
3776 _("could not find a target to attach"));
3780 target_thread_alive (ptid_t ptid
)
3782 struct target_ops
*t
;
3784 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3786 if (t
->to_thread_alive
!= NULL
)
3790 retval
= t
->to_thread_alive (t
, ptid
);
3792 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3793 PIDGET (ptid
), retval
);
3803 target_find_new_threads (void)
3805 struct target_ops
*t
;
3807 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3809 if (t
->to_find_new_threads
!= NULL
)
3811 t
->to_find_new_threads (t
);
3813 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3821 target_stop (ptid_t ptid
)
3825 warning (_("May not interrupt or stop the target, ignoring attempt"));
3829 (*current_target
.to_stop
) (ptid
);
3833 debug_to_post_attach (int pid
)
3835 debug_target
.to_post_attach (pid
);
3837 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3840 /* Return a pretty printed form of target_waitstatus.
3841 Space for the result is malloc'd, caller must free. */
3844 target_waitstatus_to_string (const struct target_waitstatus
*ws
)
3846 const char *kind_str
= "status->kind = ";
3850 case TARGET_WAITKIND_EXITED
:
3851 return xstrprintf ("%sexited, status = %d",
3852 kind_str
, ws
->value
.integer
);
3853 case TARGET_WAITKIND_STOPPED
:
3854 return xstrprintf ("%sstopped, signal = %s",
3855 kind_str
, gdb_signal_to_name (ws
->value
.sig
));
3856 case TARGET_WAITKIND_SIGNALLED
:
3857 return xstrprintf ("%ssignalled, signal = %s",
3858 kind_str
, gdb_signal_to_name (ws
->value
.sig
));
3859 case TARGET_WAITKIND_LOADED
:
3860 return xstrprintf ("%sloaded", kind_str
);
3861 case TARGET_WAITKIND_FORKED
:
3862 return xstrprintf ("%sforked", kind_str
);
3863 case TARGET_WAITKIND_VFORKED
:
3864 return xstrprintf ("%svforked", kind_str
);
3865 case TARGET_WAITKIND_EXECD
:
3866 return xstrprintf ("%sexecd", kind_str
);
3867 case TARGET_WAITKIND_SYSCALL_ENTRY
:
3868 return xstrprintf ("%sentered syscall", kind_str
);
3869 case TARGET_WAITKIND_SYSCALL_RETURN
:
3870 return xstrprintf ("%sexited syscall", kind_str
);
3871 case TARGET_WAITKIND_SPURIOUS
:
3872 return xstrprintf ("%sspurious", kind_str
);
3873 case TARGET_WAITKIND_IGNORE
:
3874 return xstrprintf ("%signore", kind_str
);
3875 case TARGET_WAITKIND_NO_HISTORY
:
3876 return xstrprintf ("%sno-history", kind_str
);
3877 case TARGET_WAITKIND_NO_RESUMED
:
3878 return xstrprintf ("%sno-resumed", kind_str
);
3880 return xstrprintf ("%sunknown???", kind_str
);
3885 debug_print_register (const char * func
,
3886 struct regcache
*regcache
, int regno
)
3888 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3890 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3891 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3892 && gdbarch_register_name (gdbarch
, regno
) != NULL
3893 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3894 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3895 gdbarch_register_name (gdbarch
, regno
));
3897 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3898 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3900 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3901 int i
, size
= register_size (gdbarch
, regno
);
3902 unsigned char buf
[MAX_REGISTER_SIZE
];
3904 regcache_raw_collect (regcache
, regno
, buf
);
3905 fprintf_unfiltered (gdb_stdlog
, " = ");
3906 for (i
= 0; i
< size
; i
++)
3908 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3910 if (size
<= sizeof (LONGEST
))
3912 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3914 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3915 core_addr_to_string_nz (val
), plongest (val
));
3918 fprintf_unfiltered (gdb_stdlog
, "\n");
3922 target_fetch_registers (struct regcache
*regcache
, int regno
)
3924 struct target_ops
*t
;
3926 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3928 if (t
->to_fetch_registers
!= NULL
)
3930 t
->to_fetch_registers (t
, regcache
, regno
);
3932 debug_print_register ("target_fetch_registers", regcache
, regno
);
3939 target_store_registers (struct regcache
*regcache
, int regno
)
3941 struct target_ops
*t
;
3943 if (!may_write_registers
)
3944 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3946 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3948 if (t
->to_store_registers
!= NULL
)
3950 t
->to_store_registers (t
, regcache
, regno
);
3953 debug_print_register ("target_store_registers", regcache
, regno
);
3963 target_core_of_thread (ptid_t ptid
)
3965 struct target_ops
*t
;
3967 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3969 if (t
->to_core_of_thread
!= NULL
)
3971 int retval
= t
->to_core_of_thread (t
, ptid
);
3974 fprintf_unfiltered (gdb_stdlog
,
3975 "target_core_of_thread (%d) = %d\n",
3976 PIDGET (ptid
), retval
);
3985 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3987 struct target_ops
*t
;
3989 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3991 if (t
->to_verify_memory
!= NULL
)
3993 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3996 fprintf_unfiltered (gdb_stdlog
,
3997 "target_verify_memory (%s, %s) = %d\n",
3998 paddress (target_gdbarch
, memaddr
),
4008 /* The documentation for this function is in its prototype declaration in
4012 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4014 struct target_ops
*t
;
4016 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4017 if (t
->to_insert_mask_watchpoint
!= NULL
)
4021 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
4024 fprintf_unfiltered (gdb_stdlog
, "\
4025 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
4026 core_addr_to_string (addr
),
4027 core_addr_to_string (mask
), rw
, ret
);
4035 /* The documentation for this function is in its prototype declaration in
4039 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4041 struct target_ops
*t
;
4043 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4044 if (t
->to_remove_mask_watchpoint
!= NULL
)
4048 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
4051 fprintf_unfiltered (gdb_stdlog
, "\
4052 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
4053 core_addr_to_string (addr
),
4054 core_addr_to_string (mask
), rw
, ret
);
4062 /* The documentation for this function is in its prototype declaration
4066 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4068 struct target_ops
*t
;
4070 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4071 if (t
->to_masked_watch_num_registers
!= NULL
)
4072 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4077 /* The documentation for this function is in its prototype declaration
4081 target_ranged_break_num_registers (void)
4083 struct target_ops
*t
;
4085 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4086 if (t
->to_ranged_break_num_registers
!= NULL
)
4087 return t
->to_ranged_break_num_registers (t
);
4093 debug_to_prepare_to_store (struct regcache
*regcache
)
4095 debug_target
.to_prepare_to_store (regcache
);
4097 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4101 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4102 int write
, struct mem_attrib
*attrib
,
4103 struct target_ops
*target
)
4107 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4110 fprintf_unfiltered (gdb_stdlog
,
4111 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4112 paddress (target_gdbarch
, memaddr
), len
,
4113 write
? "write" : "read", retval
);
4119 fputs_unfiltered (", bytes =", gdb_stdlog
);
4120 for (i
= 0; i
< retval
; i
++)
4122 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4124 if (targetdebug
< 2 && i
> 0)
4126 fprintf_unfiltered (gdb_stdlog
, " ...");
4129 fprintf_unfiltered (gdb_stdlog
, "\n");
4132 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4136 fputc_unfiltered ('\n', gdb_stdlog
);
4142 debug_to_files_info (struct target_ops
*target
)
4144 debug_target
.to_files_info (target
);
4146 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4150 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
4151 struct bp_target_info
*bp_tgt
)
4155 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
4157 fprintf_unfiltered (gdb_stdlog
,
4158 "target_insert_breakpoint (%s, xxx) = %ld\n",
4159 core_addr_to_string (bp_tgt
->placed_address
),
4160 (unsigned long) retval
);
4165 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
4166 struct bp_target_info
*bp_tgt
)
4170 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
4172 fprintf_unfiltered (gdb_stdlog
,
4173 "target_remove_breakpoint (%s, xxx) = %ld\n",
4174 core_addr_to_string (bp_tgt
->placed_address
),
4175 (unsigned long) retval
);
4180 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
4184 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
4186 fprintf_unfiltered (gdb_stdlog
,
4187 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4188 (unsigned long) type
,
4189 (unsigned long) cnt
,
4190 (unsigned long) from_tty
,
4191 (unsigned long) retval
);
4196 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
4200 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
4202 fprintf_unfiltered (gdb_stdlog
,
4203 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4204 core_addr_to_string (addr
), (unsigned long) len
,
4205 core_addr_to_string (retval
));
4210 debug_to_can_accel_watchpoint_condition (CORE_ADDR addr
, int len
, int rw
,
4211 struct expression
*cond
)
4215 retval
= debug_target
.to_can_accel_watchpoint_condition (addr
, len
,
4218 fprintf_unfiltered (gdb_stdlog
,
4219 "target_can_accel_watchpoint_condition "
4220 "(%s, %d, %d, %s) = %ld\n",
4221 core_addr_to_string (addr
), len
, rw
,
4222 host_address_to_string (cond
), (unsigned long) retval
);
4227 debug_to_stopped_by_watchpoint (void)
4231 retval
= debug_target
.to_stopped_by_watchpoint ();
4233 fprintf_unfiltered (gdb_stdlog
,
4234 "target_stopped_by_watchpoint () = %ld\n",
4235 (unsigned long) retval
);
4240 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4244 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4246 fprintf_unfiltered (gdb_stdlog
,
4247 "target_stopped_data_address ([%s]) = %ld\n",
4248 core_addr_to_string (*addr
),
4249 (unsigned long)retval
);
4254 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4256 CORE_ADDR start
, int length
)
4260 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4263 fprintf_filtered (gdb_stdlog
,
4264 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4265 core_addr_to_string (addr
), core_addr_to_string (start
),
4271 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
4272 struct bp_target_info
*bp_tgt
)
4276 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
4278 fprintf_unfiltered (gdb_stdlog
,
4279 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4280 core_addr_to_string (bp_tgt
->placed_address
),
4281 (unsigned long) retval
);
4286 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
4287 struct bp_target_info
*bp_tgt
)
4291 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
4293 fprintf_unfiltered (gdb_stdlog
,
4294 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4295 core_addr_to_string (bp_tgt
->placed_address
),
4296 (unsigned long) retval
);
4301 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
4302 struct expression
*cond
)
4306 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
, cond
);
4308 fprintf_unfiltered (gdb_stdlog
,
4309 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4310 core_addr_to_string (addr
), len
, type
,
4311 host_address_to_string (cond
), (unsigned long) retval
);
4316 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
4317 struct expression
*cond
)
4321 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
, cond
);
4323 fprintf_unfiltered (gdb_stdlog
,
4324 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4325 core_addr_to_string (addr
), len
, type
,
4326 host_address_to_string (cond
), (unsigned long) retval
);
4331 debug_to_terminal_init (void)
4333 debug_target
.to_terminal_init ();
4335 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4339 debug_to_terminal_inferior (void)
4341 debug_target
.to_terminal_inferior ();
4343 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4347 debug_to_terminal_ours_for_output (void)
4349 debug_target
.to_terminal_ours_for_output ();
4351 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4355 debug_to_terminal_ours (void)
4357 debug_target
.to_terminal_ours ();
4359 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4363 debug_to_terminal_save_ours (void)
4365 debug_target
.to_terminal_save_ours ();
4367 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4371 debug_to_terminal_info (char *arg
, int from_tty
)
4373 debug_target
.to_terminal_info (arg
, from_tty
);
4375 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4380 debug_to_load (char *args
, int from_tty
)
4382 debug_target
.to_load (args
, from_tty
);
4384 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4388 debug_to_post_startup_inferior (ptid_t ptid
)
4390 debug_target
.to_post_startup_inferior (ptid
);
4392 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4397 debug_to_insert_fork_catchpoint (int pid
)
4401 retval
= debug_target
.to_insert_fork_catchpoint (pid
);
4403 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4410 debug_to_remove_fork_catchpoint (int pid
)
4414 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
4416 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4423 debug_to_insert_vfork_catchpoint (int pid
)
4427 retval
= debug_target
.to_insert_vfork_catchpoint (pid
);
4429 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4436 debug_to_remove_vfork_catchpoint (int pid
)
4440 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
4442 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4449 debug_to_insert_exec_catchpoint (int pid
)
4453 retval
= debug_target
.to_insert_exec_catchpoint (pid
);
4455 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4462 debug_to_remove_exec_catchpoint (int pid
)
4466 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
4468 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4475 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
4479 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
4481 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4482 pid
, wait_status
, *exit_status
, has_exited
);
4488 debug_to_can_run (void)
4492 retval
= debug_target
.to_can_run ();
4494 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4499 static struct gdbarch
*
4500 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4502 struct gdbarch
*retval
;
4504 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4506 fprintf_unfiltered (gdb_stdlog
,
4507 "target_thread_architecture (%s) = %s [%s]\n",
4508 target_pid_to_str (ptid
),
4509 host_address_to_string (retval
),
4510 gdbarch_bfd_arch_info (retval
)->printable_name
);
4515 debug_to_stop (ptid_t ptid
)
4517 debug_target
.to_stop (ptid
);
4519 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4520 target_pid_to_str (ptid
));
4524 debug_to_rcmd (char *command
,
4525 struct ui_file
*outbuf
)
4527 debug_target
.to_rcmd (command
, outbuf
);
4528 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4532 debug_to_pid_to_exec_file (int pid
)
4536 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
4538 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4545 setup_target_debug (void)
4547 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4549 current_target
.to_open
= debug_to_open
;
4550 current_target
.to_post_attach
= debug_to_post_attach
;
4551 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4552 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4553 current_target
.to_files_info
= debug_to_files_info
;
4554 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4555 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4556 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4557 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4558 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4559 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4560 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4561 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4562 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4563 current_target
.to_watchpoint_addr_within_range
4564 = debug_to_watchpoint_addr_within_range
;
4565 current_target
.to_region_ok_for_hw_watchpoint
4566 = debug_to_region_ok_for_hw_watchpoint
;
4567 current_target
.to_can_accel_watchpoint_condition
4568 = debug_to_can_accel_watchpoint_condition
;
4569 current_target
.to_terminal_init
= debug_to_terminal_init
;
4570 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4571 current_target
.to_terminal_ours_for_output
4572 = debug_to_terminal_ours_for_output
;
4573 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4574 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4575 current_target
.to_terminal_info
= debug_to_terminal_info
;
4576 current_target
.to_load
= debug_to_load
;
4577 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4578 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4579 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4580 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4581 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4582 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4583 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4584 current_target
.to_has_exited
= debug_to_has_exited
;
4585 current_target
.to_can_run
= debug_to_can_run
;
4586 current_target
.to_stop
= debug_to_stop
;
4587 current_target
.to_rcmd
= debug_to_rcmd
;
4588 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4589 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4593 static char targ_desc
[] =
4594 "Names of targets and files being debugged.\nShows the entire \
4595 stack of targets currently in use (including the exec-file,\n\
4596 core-file, and process, if any), as well as the symbol file name.";
4599 do_monitor_command (char *cmd
,
4602 if ((current_target
.to_rcmd
4603 == (void (*) (char *, struct ui_file
*)) tcomplain
)
4604 || (current_target
.to_rcmd
== debug_to_rcmd
4605 && (debug_target
.to_rcmd
4606 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
4607 error (_("\"monitor\" command not supported by this target."));
4608 target_rcmd (cmd
, gdb_stdtarg
);
4611 /* Print the name of each layers of our target stack. */
4614 maintenance_print_target_stack (char *cmd
, int from_tty
)
4616 struct target_ops
*t
;
4618 printf_filtered (_("The current target stack is:\n"));
4620 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4622 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4626 /* Controls if async mode is permitted. */
4627 int target_async_permitted
= 0;
4629 /* The set command writes to this variable. If the inferior is
4630 executing, linux_nat_async_permitted is *not* updated. */
4631 static int target_async_permitted_1
= 0;
4634 set_target_async_command (char *args
, int from_tty
,
4635 struct cmd_list_element
*c
)
4637 if (have_live_inferiors ())
4639 target_async_permitted_1
= target_async_permitted
;
4640 error (_("Cannot change this setting while the inferior is running."));
4643 target_async_permitted
= target_async_permitted_1
;
4647 show_target_async_command (struct ui_file
*file
, int from_tty
,
4648 struct cmd_list_element
*c
,
4651 fprintf_filtered (file
,
4652 _("Controlling the inferior in "
4653 "asynchronous mode is %s.\n"), value
);
4656 /* Temporary copies of permission settings. */
4658 static int may_write_registers_1
= 1;
4659 static int may_write_memory_1
= 1;
4660 static int may_insert_breakpoints_1
= 1;
4661 static int may_insert_tracepoints_1
= 1;
4662 static int may_insert_fast_tracepoints_1
= 1;
4663 static int may_stop_1
= 1;
4665 /* Make the user-set values match the real values again. */
4668 update_target_permissions (void)
4670 may_write_registers_1
= may_write_registers
;
4671 may_write_memory_1
= may_write_memory
;
4672 may_insert_breakpoints_1
= may_insert_breakpoints
;
4673 may_insert_tracepoints_1
= may_insert_tracepoints
;
4674 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4675 may_stop_1
= may_stop
;
4678 /* The one function handles (most of) the permission flags in the same
4682 set_target_permissions (char *args
, int from_tty
,
4683 struct cmd_list_element
*c
)
4685 if (target_has_execution
)
4687 update_target_permissions ();
4688 error (_("Cannot change this setting while the inferior is running."));
4691 /* Make the real values match the user-changed values. */
4692 may_write_registers
= may_write_registers_1
;
4693 may_insert_breakpoints
= may_insert_breakpoints_1
;
4694 may_insert_tracepoints
= may_insert_tracepoints_1
;
4695 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4696 may_stop
= may_stop_1
;
4697 update_observer_mode ();
4700 /* Set memory write permission independently of observer mode. */
4703 set_write_memory_permission (char *args
, int from_tty
,
4704 struct cmd_list_element
*c
)
4706 /* Make the real values match the user-changed values. */
4707 may_write_memory
= may_write_memory_1
;
4708 update_observer_mode ();
4713 initialize_targets (void)
4715 init_dummy_target ();
4716 push_target (&dummy_target
);
4718 add_info ("target", target_info
, targ_desc
);
4719 add_info ("files", target_info
, targ_desc
);
4721 add_setshow_zinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
4722 Set target debugging."), _("\
4723 Show target debugging."), _("\
4724 When non-zero, target debugging is enabled. Higher numbers are more\n\
4725 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4729 &setdebuglist
, &showdebuglist
);
4731 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
4732 &trust_readonly
, _("\
4733 Set mode for reading from readonly sections."), _("\
4734 Show mode for reading from readonly sections."), _("\
4735 When this mode is on, memory reads from readonly sections (such as .text)\n\
4736 will be read from the object file instead of from the target. This will\n\
4737 result in significant performance improvement for remote targets."),
4739 show_trust_readonly
,
4740 &setlist
, &showlist
);
4742 add_com ("monitor", class_obscure
, do_monitor_command
,
4743 _("Send a command to the remote monitor (remote targets only)."));
4745 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
4746 _("Print the name of each layer of the internal target stack."),
4747 &maintenanceprintlist
);
4749 add_setshow_boolean_cmd ("target-async", no_class
,
4750 &target_async_permitted_1
, _("\
4751 Set whether gdb controls the inferior in asynchronous mode."), _("\
4752 Show whether gdb controls the inferior in asynchronous mode."), _("\
4753 Tells gdb whether to control the inferior in asynchronous mode."),
4754 set_target_async_command
,
4755 show_target_async_command
,
4759 add_setshow_boolean_cmd ("stack-cache", class_support
,
4760 &stack_cache_enabled_p_1
, _("\
4761 Set cache use for stack access."), _("\
4762 Show cache use for stack access."), _("\
4763 When on, use the data cache for all stack access, regardless of any\n\
4764 configured memory regions. This improves remote performance significantly.\n\
4765 By default, caching for stack access is on."),
4766 set_stack_cache_enabled_p
,
4767 show_stack_cache_enabled_p
,
4768 &setlist
, &showlist
);
4770 add_setshow_boolean_cmd ("may-write-registers", class_support
,
4771 &may_write_registers_1
, _("\
4772 Set permission to write into registers."), _("\
4773 Show permission to write into registers."), _("\
4774 When this permission is on, GDB may write into the target's registers.\n\
4775 Otherwise, any sort of write attempt will result in an error."),
4776 set_target_permissions
, NULL
,
4777 &setlist
, &showlist
);
4779 add_setshow_boolean_cmd ("may-write-memory", class_support
,
4780 &may_write_memory_1
, _("\
4781 Set permission to write into target memory."), _("\
4782 Show permission to write into target memory."), _("\
4783 When this permission is on, GDB may write into the target's memory.\n\
4784 Otherwise, any sort of write attempt will result in an error."),
4785 set_write_memory_permission
, NULL
,
4786 &setlist
, &showlist
);
4788 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
4789 &may_insert_breakpoints_1
, _("\
4790 Set permission to insert breakpoints in the target."), _("\
4791 Show permission to insert breakpoints in the target."), _("\
4792 When this permission is on, GDB may insert breakpoints in the program.\n\
4793 Otherwise, any sort of insertion attempt will result in an error."),
4794 set_target_permissions
, NULL
,
4795 &setlist
, &showlist
);
4797 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
4798 &may_insert_tracepoints_1
, _("\
4799 Set permission to insert tracepoints in the target."), _("\
4800 Show permission to insert tracepoints in the target."), _("\
4801 When this permission is on, GDB may insert tracepoints in the program.\n\
4802 Otherwise, any sort of insertion attempt will result in an error."),
4803 set_target_permissions
, NULL
,
4804 &setlist
, &showlist
);
4806 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
4807 &may_insert_fast_tracepoints_1
, _("\
4808 Set permission to insert fast tracepoints in the target."), _("\
4809 Show permission to insert fast tracepoints in the target."), _("\
4810 When this permission is on, GDB may insert fast tracepoints.\n\
4811 Otherwise, any sort of insertion attempt will result in an error."),
4812 set_target_permissions
, NULL
,
4813 &setlist
, &showlist
);
4815 add_setshow_boolean_cmd ("may-interrupt", class_support
,
4817 Set permission to interrupt or signal the target."), _("\
4818 Show permission to interrupt or signal the target."), _("\
4819 When this permission is on, GDB may interrupt/stop the target's execution.\n\
4820 Otherwise, any attempt to interrupt or stop will be ignored."),
4821 set_target_permissions
, NULL
,
4822 &setlist
, &showlist
);
4825 target_dcache
= dcache_init ();