1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2013 Free Software Foundation, Inc.
5 Contributed by Cygnus Support.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "gdb_string.h"
35 #include "gdb_assert.h"
37 #include "exceptions.h"
38 #include "target-descriptions.h"
39 #include "gdbthread.h"
42 #include "inline-frame.h"
43 #include "tracepoint.h"
44 #include "gdb/fileio.h"
47 static void target_info (char *, int);
49 static void default_terminal_info (char *, int);
51 static int default_watchpoint_addr_within_range (struct target_ops
*,
52 CORE_ADDR
, CORE_ADDR
, int);
54 static int default_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
56 static void tcomplain (void) ATTRIBUTE_NORETURN
;
58 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
60 static int return_zero (void);
62 static int return_one (void);
64 static int return_minus_one (void);
66 void target_ignore (void);
68 static void target_command (char *, int);
70 static struct target_ops
*find_default_run_target (char *);
72 static LONGEST
default_xfer_partial (struct target_ops
*ops
,
73 enum target_object object
,
74 const char *annex
, gdb_byte
*readbuf
,
75 const gdb_byte
*writebuf
,
76 ULONGEST offset
, LONGEST len
);
78 static LONGEST
current_xfer_partial (struct target_ops
*ops
,
79 enum target_object object
,
80 const char *annex
, gdb_byte
*readbuf
,
81 const gdb_byte
*writebuf
,
82 ULONGEST offset
, LONGEST len
);
84 static LONGEST
target_xfer_partial (struct target_ops
*ops
,
85 enum target_object object
,
87 void *readbuf
, const void *writebuf
,
88 ULONGEST offset
, LONGEST len
);
90 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
93 static void init_dummy_target (void);
95 static struct target_ops debug_target
;
97 static void debug_to_open (char *, int);
99 static void debug_to_prepare_to_store (struct regcache
*);
101 static void debug_to_files_info (struct target_ops
*);
103 static int debug_to_insert_breakpoint (struct gdbarch
*,
104 struct bp_target_info
*);
106 static int debug_to_remove_breakpoint (struct gdbarch
*,
107 struct bp_target_info
*);
109 static int debug_to_can_use_hw_breakpoint (int, int, int);
111 static int debug_to_insert_hw_breakpoint (struct gdbarch
*,
112 struct bp_target_info
*);
114 static int debug_to_remove_hw_breakpoint (struct gdbarch
*,
115 struct bp_target_info
*);
117 static int debug_to_insert_watchpoint (CORE_ADDR
, int, int,
118 struct expression
*);
120 static int debug_to_remove_watchpoint (CORE_ADDR
, int, int,
121 struct expression
*);
123 static int debug_to_stopped_by_watchpoint (void);
125 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
127 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
128 CORE_ADDR
, CORE_ADDR
, int);
130 static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
132 static int debug_to_can_accel_watchpoint_condition (CORE_ADDR
, int, int,
133 struct expression
*);
135 static void debug_to_terminal_init (void);
137 static void debug_to_terminal_inferior (void);
139 static void debug_to_terminal_ours_for_output (void);
141 static void debug_to_terminal_save_ours (void);
143 static void debug_to_terminal_ours (void);
145 static void debug_to_terminal_info (char *, int);
147 static void debug_to_load (char *, int);
149 static int debug_to_can_run (void);
151 static void debug_to_stop (ptid_t
);
153 /* Pointer to array of target architecture structures; the size of the
154 array; the current index into the array; the allocated size of the
156 struct target_ops
**target_structs
;
157 unsigned target_struct_size
;
158 unsigned target_struct_index
;
159 unsigned target_struct_allocsize
;
160 #define DEFAULT_ALLOCSIZE 10
162 /* The initial current target, so that there is always a semi-valid
165 static struct target_ops dummy_target
;
167 /* Top of target stack. */
169 static struct target_ops
*target_stack
;
171 /* The target structure we are currently using to talk to a process
172 or file or whatever "inferior" we have. */
174 struct target_ops current_target
;
176 /* Command list for target. */
178 static struct cmd_list_element
*targetlist
= NULL
;
180 /* Nonzero if we should trust readonly sections from the
181 executable when reading memory. */
183 static int trust_readonly
= 0;
185 /* Nonzero if we should show true memory content including
186 memory breakpoint inserted by gdb. */
188 static int show_memory_breakpoints
= 0;
190 /* These globals control whether GDB attempts to perform these
191 operations; they are useful for targets that need to prevent
192 inadvertant disruption, such as in non-stop mode. */
194 int may_write_registers
= 1;
196 int may_write_memory
= 1;
198 int may_insert_breakpoints
= 1;
200 int may_insert_tracepoints
= 1;
202 int may_insert_fast_tracepoints
= 1;
206 /* Non-zero if we want to see trace of target level stuff. */
208 static unsigned int targetdebug
= 0;
210 show_targetdebug (struct ui_file
*file
, int from_tty
,
211 struct cmd_list_element
*c
, const char *value
)
213 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
216 static void setup_target_debug (void);
218 /* The option sets this. */
219 static int stack_cache_enabled_p_1
= 1;
220 /* And set_stack_cache_enabled_p updates this.
221 The reason for the separation is so that we don't flush the cache for
222 on->on transitions. */
223 static int stack_cache_enabled_p
= 1;
225 /* This is called *after* the stack-cache has been set.
226 Flush the cache for off->on and on->off transitions.
227 There's no real need to flush the cache for on->off transitions,
228 except cleanliness. */
231 set_stack_cache_enabled_p (char *args
, int from_tty
,
232 struct cmd_list_element
*c
)
234 if (stack_cache_enabled_p
!= stack_cache_enabled_p_1
)
235 target_dcache_invalidate ();
237 stack_cache_enabled_p
= stack_cache_enabled_p_1
;
241 show_stack_cache_enabled_p (struct ui_file
*file
, int from_tty
,
242 struct cmd_list_element
*c
, const char *value
)
244 fprintf_filtered (file
, _("Cache use for stack accesses is %s.\n"), value
);
247 /* Cache of memory operations, to speed up remote access. */
248 static DCACHE
*target_dcache
;
250 /* Invalidate the target dcache. */
253 target_dcache_invalidate (void)
255 dcache_invalidate (target_dcache
);
258 /* The user just typed 'target' without the name of a target. */
261 target_command (char *arg
, int from_tty
)
263 fputs_filtered ("Argument required (target name). Try `help target'\n",
267 /* Default target_has_* methods for process_stratum targets. */
270 default_child_has_all_memory (struct target_ops
*ops
)
272 /* If no inferior selected, then we can't read memory here. */
273 if (ptid_equal (inferior_ptid
, null_ptid
))
280 default_child_has_memory (struct target_ops
*ops
)
282 /* If no inferior selected, then we can't read memory here. */
283 if (ptid_equal (inferior_ptid
, null_ptid
))
290 default_child_has_stack (struct target_ops
*ops
)
292 /* If no inferior selected, there's no stack. */
293 if (ptid_equal (inferior_ptid
, null_ptid
))
300 default_child_has_registers (struct target_ops
*ops
)
302 /* Can't read registers from no inferior. */
303 if (ptid_equal (inferior_ptid
, null_ptid
))
310 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
312 /* If there's no thread selected, then we can't make it run through
314 if (ptid_equal (the_ptid
, null_ptid
))
322 target_has_all_memory_1 (void)
324 struct target_ops
*t
;
326 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
327 if (t
->to_has_all_memory (t
))
334 target_has_memory_1 (void)
336 struct target_ops
*t
;
338 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
339 if (t
->to_has_memory (t
))
346 target_has_stack_1 (void)
348 struct target_ops
*t
;
350 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
351 if (t
->to_has_stack (t
))
358 target_has_registers_1 (void)
360 struct target_ops
*t
;
362 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
363 if (t
->to_has_registers (t
))
370 target_has_execution_1 (ptid_t the_ptid
)
372 struct target_ops
*t
;
374 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
375 if (t
->to_has_execution (t
, the_ptid
))
382 target_has_execution_current (void)
384 return target_has_execution_1 (inferior_ptid
);
387 /* Add a possible target architecture to the list. */
390 add_target (struct target_ops
*t
)
392 /* Provide default values for all "must have" methods. */
393 if (t
->to_xfer_partial
== NULL
)
394 t
->to_xfer_partial
= default_xfer_partial
;
396 if (t
->to_has_all_memory
== NULL
)
397 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
399 if (t
->to_has_memory
== NULL
)
400 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
402 if (t
->to_has_stack
== NULL
)
403 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
405 if (t
->to_has_registers
== NULL
)
406 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
408 if (t
->to_has_execution
== NULL
)
409 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
413 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
414 target_structs
= (struct target_ops
**) xmalloc
415 (target_struct_allocsize
* sizeof (*target_structs
));
417 if (target_struct_size
>= target_struct_allocsize
)
419 target_struct_allocsize
*= 2;
420 target_structs
= (struct target_ops
**)
421 xrealloc ((char *) target_structs
,
422 target_struct_allocsize
* sizeof (*target_structs
));
424 target_structs
[target_struct_size
++] = t
;
426 if (targetlist
== NULL
)
427 add_prefix_cmd ("target", class_run
, target_command
, _("\
428 Connect to a target machine or process.\n\
429 The first argument is the type or protocol of the target machine.\n\
430 Remaining arguments are interpreted by the target protocol. For more\n\
431 information on the arguments for a particular protocol, type\n\
432 `help target ' followed by the protocol name."),
433 &targetlist
, "target ", 0, &cmdlist
);
434 add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
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 INHERIT (to_can_run_breakpoint_commands
, t
);
707 /* Do not inherit to_memory_map. */
708 /* Do not inherit to_flash_erase. */
709 /* Do not inherit to_flash_done. */
713 /* Clean up a target struct so it no longer has any zero pointers in
714 it. Some entries are defaulted to a method that print an error,
715 others are hard-wired to a standard recursive default. */
717 #define de_fault(field, value) \
718 if (!current_target.field) \
719 current_target.field = value
722 (void (*) (char *, int))
727 de_fault (to_post_attach
,
730 de_fault (to_prepare_to_store
,
731 (void (*) (struct regcache
*))
733 de_fault (deprecated_xfer_memory
,
734 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
735 struct mem_attrib
*, struct target_ops
*))
737 de_fault (to_files_info
,
738 (void (*) (struct target_ops
*))
740 de_fault (to_insert_breakpoint
,
741 memory_insert_breakpoint
);
742 de_fault (to_remove_breakpoint
,
743 memory_remove_breakpoint
);
744 de_fault (to_can_use_hw_breakpoint
,
745 (int (*) (int, int, int))
747 de_fault (to_insert_hw_breakpoint
,
748 (int (*) (struct gdbarch
*, struct bp_target_info
*))
750 de_fault (to_remove_hw_breakpoint
,
751 (int (*) (struct gdbarch
*, struct bp_target_info
*))
753 de_fault (to_insert_watchpoint
,
754 (int (*) (CORE_ADDR
, int, int, struct expression
*))
756 de_fault (to_remove_watchpoint
,
757 (int (*) (CORE_ADDR
, int, int, struct expression
*))
759 de_fault (to_stopped_by_watchpoint
,
762 de_fault (to_stopped_data_address
,
763 (int (*) (struct target_ops
*, CORE_ADDR
*))
765 de_fault (to_watchpoint_addr_within_range
,
766 default_watchpoint_addr_within_range
);
767 de_fault (to_region_ok_for_hw_watchpoint
,
768 default_region_ok_for_hw_watchpoint
);
769 de_fault (to_can_accel_watchpoint_condition
,
770 (int (*) (CORE_ADDR
, int, int, struct expression
*))
772 de_fault (to_terminal_init
,
775 de_fault (to_terminal_inferior
,
778 de_fault (to_terminal_ours_for_output
,
781 de_fault (to_terminal_ours
,
784 de_fault (to_terminal_save_ours
,
787 de_fault (to_terminal_info
,
788 default_terminal_info
);
790 (void (*) (char *, int))
792 de_fault (to_post_startup_inferior
,
795 de_fault (to_insert_fork_catchpoint
,
798 de_fault (to_remove_fork_catchpoint
,
801 de_fault (to_insert_vfork_catchpoint
,
804 de_fault (to_remove_vfork_catchpoint
,
807 de_fault (to_insert_exec_catchpoint
,
810 de_fault (to_remove_exec_catchpoint
,
813 de_fault (to_set_syscall_catchpoint
,
814 (int (*) (int, int, int, int, int *))
816 de_fault (to_has_exited
,
817 (int (*) (int, int, int *))
819 de_fault (to_can_run
,
821 de_fault (to_extra_thread_info
,
822 (char *(*) (struct thread_info
*))
824 de_fault (to_thread_name
,
825 (char *(*) (struct thread_info
*))
830 current_target
.to_xfer_partial
= current_xfer_partial
;
832 (void (*) (char *, struct ui_file
*))
834 de_fault (to_pid_to_exec_file
,
838 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
840 de_fault (to_thread_architecture
,
841 default_thread_architecture
);
842 current_target
.to_read_description
= NULL
;
843 de_fault (to_get_ada_task_ptid
,
844 (ptid_t (*) (long, long))
845 default_get_ada_task_ptid
);
846 de_fault (to_supports_multi_process
,
849 de_fault (to_supports_enable_disable_tracepoint
,
852 de_fault (to_supports_string_tracing
,
855 de_fault (to_trace_init
,
858 de_fault (to_download_tracepoint
,
859 (void (*) (struct bp_location
*))
861 de_fault (to_can_download_tracepoint
,
864 de_fault (to_download_trace_state_variable
,
865 (void (*) (struct trace_state_variable
*))
867 de_fault (to_enable_tracepoint
,
868 (void (*) (struct bp_location
*))
870 de_fault (to_disable_tracepoint
,
871 (void (*) (struct bp_location
*))
873 de_fault (to_trace_set_readonly_regions
,
876 de_fault (to_trace_start
,
879 de_fault (to_get_trace_status
,
880 (int (*) (struct trace_status
*))
882 de_fault (to_get_tracepoint_status
,
883 (void (*) (struct breakpoint
*, struct uploaded_tp
*))
885 de_fault (to_trace_stop
,
888 de_fault (to_trace_find
,
889 (int (*) (enum trace_find_type
, int, ULONGEST
, ULONGEST
, int *))
891 de_fault (to_get_trace_state_variable_value
,
892 (int (*) (int, LONGEST
*))
894 de_fault (to_save_trace_data
,
895 (int (*) (const char *))
897 de_fault (to_upload_tracepoints
,
898 (int (*) (struct uploaded_tp
**))
900 de_fault (to_upload_trace_state_variables
,
901 (int (*) (struct uploaded_tsv
**))
903 de_fault (to_get_raw_trace_data
,
904 (LONGEST (*) (gdb_byte
*, ULONGEST
, LONGEST
))
906 de_fault (to_get_min_fast_tracepoint_insn_len
,
909 de_fault (to_set_disconnected_tracing
,
912 de_fault (to_set_circular_trace_buffer
,
915 de_fault (to_set_trace_notes
,
916 (int (*) (char *, char *, char *))
918 de_fault (to_get_tib_address
,
919 (int (*) (ptid_t
, CORE_ADDR
*))
921 de_fault (to_set_permissions
,
924 de_fault (to_static_tracepoint_marker_at
,
925 (int (*) (CORE_ADDR
, struct static_tracepoint_marker
*))
927 de_fault (to_static_tracepoint_markers_by_strid
,
928 (VEC(static_tracepoint_marker_p
) * (*) (const char *))
930 de_fault (to_traceframe_info
,
931 (struct traceframe_info
* (*) (void))
933 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
936 de_fault (to_can_run_breakpoint_commands
,
939 de_fault (to_use_agent
,
942 de_fault (to_can_use_agent
,
945 de_fault (to_execution_direction
, default_execution_direction
);
949 /* Finally, position the target-stack beneath the squashed
950 "current_target". That way code looking for a non-inherited
951 target method can quickly and simply find it. */
952 current_target
.beneath
= target_stack
;
955 setup_target_debug ();
958 /* Push a new target type into the stack of the existing target accessors,
959 possibly superseding some of the existing accessors.
961 Rather than allow an empty stack, we always have the dummy target at
962 the bottom stratum, so we can call the function vectors without
966 push_target (struct target_ops
*t
)
968 struct target_ops
**cur
;
970 /* Check magic number. If wrong, it probably means someone changed
971 the struct definition, but not all the places that initialize one. */
972 if (t
->to_magic
!= OPS_MAGIC
)
974 fprintf_unfiltered (gdb_stderr
,
975 "Magic number of %s target struct wrong\n",
977 internal_error (__FILE__
, __LINE__
,
978 _("failed internal consistency check"));
981 /* Find the proper stratum to install this target in. */
982 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
984 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
988 /* If there's already targets at this stratum, remove them. */
989 /* FIXME: cagney/2003-10-15: I think this should be popping all
990 targets to CUR, and not just those at this stratum level. */
991 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
993 /* There's already something at this stratum level. Close it,
994 and un-hook it from the stack. */
995 struct target_ops
*tmp
= (*cur
);
997 (*cur
) = (*cur
)->beneath
;
999 target_close (tmp
, 0);
1002 /* We have removed all targets in our stratum, now add the new one. */
1003 t
->beneath
= (*cur
);
1006 update_current_target ();
1009 /* Remove a target_ops vector from the stack, wherever it may be.
1010 Return how many times it was removed (0 or 1). */
1013 unpush_target (struct target_ops
*t
)
1015 struct target_ops
**cur
;
1016 struct target_ops
*tmp
;
1018 if (t
->to_stratum
== dummy_stratum
)
1019 internal_error (__FILE__
, __LINE__
,
1020 _("Attempt to unpush the dummy target"));
1022 /* Look for the specified target. Note that we assume that a target
1023 can only occur once in the target stack. */
1025 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1031 /* If we don't find target_ops, quit. Only open targets should be
1036 /* Unchain the target. */
1038 (*cur
) = (*cur
)->beneath
;
1039 tmp
->beneath
= NULL
;
1041 update_current_target ();
1043 /* Finally close the target. Note we do this after unchaining, so
1044 any target method calls from within the target_close
1045 implementation don't end up in T anymore. */
1046 target_close (t
, 0);
1054 target_close (target_stack
, 0); /* Let it clean up. */
1055 if (unpush_target (target_stack
) == 1)
1058 fprintf_unfiltered (gdb_stderr
,
1059 "pop_target couldn't find target %s\n",
1060 current_target
.to_shortname
);
1061 internal_error (__FILE__
, __LINE__
,
1062 _("failed internal consistency check"));
1066 pop_all_targets_above (enum strata above_stratum
, int quitting
)
1068 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
1070 target_close (target_stack
, quitting
);
1071 if (!unpush_target (target_stack
))
1073 fprintf_unfiltered (gdb_stderr
,
1074 "pop_all_targets couldn't find target %s\n",
1075 target_stack
->to_shortname
);
1076 internal_error (__FILE__
, __LINE__
,
1077 _("failed internal consistency check"));
1084 pop_all_targets (int quitting
)
1086 pop_all_targets_above (dummy_stratum
, quitting
);
1089 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
1092 target_is_pushed (struct target_ops
*t
)
1094 struct target_ops
**cur
;
1096 /* Check magic number. If wrong, it probably means someone changed
1097 the struct definition, but not all the places that initialize one. */
1098 if (t
->to_magic
!= OPS_MAGIC
)
1100 fprintf_unfiltered (gdb_stderr
,
1101 "Magic number of %s target struct wrong\n",
1103 internal_error (__FILE__
, __LINE__
,
1104 _("failed internal consistency check"));
1107 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1114 /* Using the objfile specified in OBJFILE, find the address for the
1115 current thread's thread-local storage with offset OFFSET. */
1117 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1119 volatile CORE_ADDR addr
= 0;
1120 struct target_ops
*target
;
1122 for (target
= current_target
.beneath
;
1124 target
= target
->beneath
)
1126 if (target
->to_get_thread_local_address
!= NULL
)
1131 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
1133 ptid_t ptid
= inferior_ptid
;
1134 volatile struct gdb_exception ex
;
1136 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1140 /* Fetch the load module address for this objfile. */
1141 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1143 /* If it's 0, throw the appropriate exception. */
1145 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1146 _("TLS load module not found"));
1148 addr
= target
->to_get_thread_local_address (target
, ptid
,
1151 /* If an error occurred, print TLS related messages here. Otherwise,
1152 throw the error to some higher catcher. */
1155 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1159 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1160 error (_("Cannot find thread-local variables "
1161 "in this thread library."));
1163 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1164 if (objfile_is_library
)
1165 error (_("Cannot find shared library `%s' in dynamic"
1166 " linker's load module list"), objfile
->name
);
1168 error (_("Cannot find executable file `%s' in dynamic"
1169 " linker's load module list"), objfile
->name
);
1171 case TLS_NOT_ALLOCATED_YET_ERROR
:
1172 if (objfile_is_library
)
1173 error (_("The inferior has not yet allocated storage for"
1174 " thread-local variables in\n"
1175 "the shared library `%s'\n"
1177 objfile
->name
, target_pid_to_str (ptid
));
1179 error (_("The inferior has not yet allocated storage for"
1180 " thread-local variables in\n"
1181 "the executable `%s'\n"
1183 objfile
->name
, target_pid_to_str (ptid
));
1185 case TLS_GENERIC_ERROR
:
1186 if (objfile_is_library
)
1187 error (_("Cannot find thread-local storage for %s, "
1188 "shared library %s:\n%s"),
1189 target_pid_to_str (ptid
),
1190 objfile
->name
, ex
.message
);
1192 error (_("Cannot find thread-local storage for %s, "
1193 "executable file %s:\n%s"),
1194 target_pid_to_str (ptid
),
1195 objfile
->name
, ex
.message
);
1198 throw_exception (ex
);
1203 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1204 TLS is an ABI-specific thing. But we don't do that yet. */
1206 error (_("Cannot find thread-local variables on this target"));
1212 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1214 /* target_read_string -- read a null terminated string, up to LEN bytes,
1215 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1216 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1217 is responsible for freeing it. Return the number of bytes successfully
1221 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1223 int tlen
, offset
, i
;
1227 int buffer_allocated
;
1229 unsigned int nbytes_read
= 0;
1231 gdb_assert (string
);
1233 /* Small for testing. */
1234 buffer_allocated
= 4;
1235 buffer
= xmalloc (buffer_allocated
);
1240 tlen
= MIN (len
, 4 - (memaddr
& 3));
1241 offset
= memaddr
& 3;
1243 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1246 /* The transfer request might have crossed the boundary to an
1247 unallocated region of memory. Retry the transfer, requesting
1251 errcode
= target_read_memory (memaddr
, buf
, 1);
1256 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1260 bytes
= bufptr
- buffer
;
1261 buffer_allocated
*= 2;
1262 buffer
= xrealloc (buffer
, buffer_allocated
);
1263 bufptr
= buffer
+ bytes
;
1266 for (i
= 0; i
< tlen
; i
++)
1268 *bufptr
++ = buf
[i
+ offset
];
1269 if (buf
[i
+ offset
] == '\000')
1271 nbytes_read
+= i
+ 1;
1278 nbytes_read
+= tlen
;
1287 struct target_section_table
*
1288 target_get_section_table (struct target_ops
*target
)
1290 struct target_ops
*t
;
1293 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1295 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1296 if (t
->to_get_section_table
!= NULL
)
1297 return (*t
->to_get_section_table
) (t
);
1302 /* Find a section containing ADDR. */
1304 struct target_section
*
1305 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1307 struct target_section_table
*table
= target_get_section_table (target
);
1308 struct target_section
*secp
;
1313 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1315 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1321 /* Read memory from the live target, even if currently inspecting a
1322 traceframe. The return is the same as that of target_read. */
1325 target_read_live_memory (enum target_object object
,
1326 ULONGEST memaddr
, gdb_byte
*myaddr
, LONGEST len
)
1329 struct cleanup
*cleanup
;
1331 /* Switch momentarily out of tfind mode so to access live memory.
1332 Note that this must not clear global state, such as the frame
1333 cache, which must still remain valid for the previous traceframe.
1334 We may be _building_ the frame cache at this point. */
1335 cleanup
= make_cleanup_restore_traceframe_number ();
1336 set_traceframe_number (-1);
1338 ret
= target_read (current_target
.beneath
, object
, NULL
,
1339 myaddr
, memaddr
, len
);
1341 do_cleanups (cleanup
);
1345 /* Using the set of read-only target sections of OPS, read live
1346 read-only memory. Note that the actual reads start from the
1347 top-most target again.
1349 For interface/parameters/return description see target.h,
1353 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1354 enum target_object object
,
1355 gdb_byte
*readbuf
, ULONGEST memaddr
,
1358 struct target_section
*secp
;
1359 struct target_section_table
*table
;
1361 secp
= target_section_by_addr (ops
, memaddr
);
1363 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1366 struct target_section
*p
;
1367 ULONGEST memend
= memaddr
+ len
;
1369 table
= target_get_section_table (ops
);
1371 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1373 if (memaddr
>= p
->addr
)
1375 if (memend
<= p
->endaddr
)
1377 /* Entire transfer is within this section. */
1378 return target_read_live_memory (object
, memaddr
,
1381 else if (memaddr
>= p
->endaddr
)
1383 /* This section ends before the transfer starts. */
1388 /* This section overlaps the transfer. Just do half. */
1389 len
= p
->endaddr
- memaddr
;
1390 return target_read_live_memory (object
, memaddr
,
1400 /* Perform a partial memory transfer.
1401 For docs see target.h, to_xfer_partial. */
1404 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1405 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1410 struct mem_region
*region
;
1411 struct inferior
*inf
;
1413 /* For accesses to unmapped overlay sections, read directly from
1414 files. Must do this first, as MEMADDR may need adjustment. */
1415 if (readbuf
!= NULL
&& overlay_debugging
)
1417 struct obj_section
*section
= find_pc_overlay (memaddr
);
1419 if (pc_in_unmapped_range (memaddr
, section
))
1421 struct target_section_table
*table
1422 = target_get_section_table (ops
);
1423 const char *section_name
= section
->the_bfd_section
->name
;
1425 memaddr
= overlay_mapped_address (memaddr
, section
);
1426 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1429 table
->sections_end
,
1434 /* Try the executable files, if "trust-readonly-sections" is set. */
1435 if (readbuf
!= NULL
&& trust_readonly
)
1437 struct target_section
*secp
;
1438 struct target_section_table
*table
;
1440 secp
= target_section_by_addr (ops
, memaddr
);
1442 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1445 table
= target_get_section_table (ops
);
1446 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1449 table
->sections_end
,
1454 /* If reading unavailable memory in the context of traceframes, and
1455 this address falls within a read-only section, fallback to
1456 reading from live memory. */
1457 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1459 VEC(mem_range_s
) *available
;
1461 /* If we fail to get the set of available memory, then the
1462 target does not support querying traceframe info, and so we
1463 attempt reading from the traceframe anyway (assuming the
1464 target implements the old QTro packet then). */
1465 if (traceframe_available_memory (&available
, memaddr
, len
))
1467 struct cleanup
*old_chain
;
1469 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1471 if (VEC_empty (mem_range_s
, available
)
1472 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1474 /* Don't read into the traceframe's available
1476 if (!VEC_empty (mem_range_s
, available
))
1478 LONGEST oldlen
= len
;
1480 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1481 gdb_assert (len
<= oldlen
);
1484 do_cleanups (old_chain
);
1486 /* This goes through the topmost target again. */
1487 res
= memory_xfer_live_readonly_partial (ops
, object
,
1488 readbuf
, memaddr
, len
);
1492 /* No use trying further, we know some memory starting
1493 at MEMADDR isn't available. */
1497 /* Don't try to read more than how much is available, in
1498 case the target implements the deprecated QTro packet to
1499 cater for older GDBs (the target's knowledge of read-only
1500 sections may be outdated by now). */
1501 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1503 do_cleanups (old_chain
);
1507 /* Try GDB's internal data cache. */
1508 region
= lookup_mem_region (memaddr
);
1509 /* region->hi == 0 means there's no upper bound. */
1510 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1513 reg_len
= region
->hi
- memaddr
;
1515 switch (region
->attrib
.mode
)
1518 if (writebuf
!= NULL
)
1523 if (readbuf
!= NULL
)
1528 /* We only support writing to flash during "load" for now. */
1529 if (writebuf
!= NULL
)
1530 error (_("Writing to flash memory forbidden in this context"));
1537 if (!ptid_equal (inferior_ptid
, null_ptid
))
1538 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1543 /* The dcache reads whole cache lines; that doesn't play well
1544 with reading from a trace buffer, because reading outside of
1545 the collected memory range fails. */
1546 && get_traceframe_number () == -1
1547 && (region
->attrib
.cache
1548 || (stack_cache_enabled_p
&& object
== TARGET_OBJECT_STACK_MEMORY
)))
1550 if (readbuf
!= NULL
)
1551 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
, readbuf
,
1554 /* FIXME drow/2006-08-09: If we're going to preserve const
1555 correctness dcache_xfer_memory should take readbuf and
1557 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
,
1566 /* If none of those methods found the memory we wanted, fall back
1567 to a target partial transfer. Normally a single call to
1568 to_xfer_partial is enough; if it doesn't recognize an object
1569 it will call the to_xfer_partial of the next target down.
1570 But for memory this won't do. Memory is the only target
1571 object which can be read from more than one valid target.
1572 A core file, for instance, could have some of memory but
1573 delegate other bits to the target below it. So, we must
1574 manually try all targets. */
1578 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1579 readbuf
, writebuf
, memaddr
, reg_len
);
1583 /* We want to continue past core files to executables, but not
1584 past a running target's memory. */
1585 if (ops
->to_has_all_memory (ops
))
1590 while (ops
!= NULL
);
1592 /* Make sure the cache gets updated no matter what - if we are writing
1593 to the stack. Even if this write is not tagged as such, we still need
1594 to update the cache. */
1599 && !region
->attrib
.cache
1600 && stack_cache_enabled_p
1601 && object
!= TARGET_OBJECT_STACK_MEMORY
)
1603 dcache_update (target_dcache
, memaddr
, (void *) writebuf
, res
);
1606 /* If we still haven't got anything, return the last error. We
1611 /* Perform a partial memory transfer. For docs see target.h,
1615 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1616 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1621 /* Zero length requests are ok and require no work. */
1625 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1626 breakpoint insns, thus hiding out from higher layers whether
1627 there are software breakpoints inserted in the code stream. */
1628 if (readbuf
!= NULL
)
1630 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
);
1632 if (res
> 0 && !show_memory_breakpoints
)
1633 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1638 struct cleanup
*old_chain
;
1640 buf
= xmalloc (len
);
1641 old_chain
= make_cleanup (xfree
, buf
);
1642 memcpy (buf
, writebuf
, len
);
1644 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1645 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
);
1647 do_cleanups (old_chain
);
1654 restore_show_memory_breakpoints (void *arg
)
1656 show_memory_breakpoints
= (uintptr_t) arg
;
1660 make_show_memory_breakpoints_cleanup (int show
)
1662 int current
= show_memory_breakpoints
;
1664 show_memory_breakpoints
= show
;
1665 return make_cleanup (restore_show_memory_breakpoints
,
1666 (void *) (uintptr_t) current
);
1669 /* For docs see target.h, to_xfer_partial. */
1672 target_xfer_partial (struct target_ops
*ops
,
1673 enum target_object object
, const char *annex
,
1674 void *readbuf
, const void *writebuf
,
1675 ULONGEST offset
, LONGEST len
)
1679 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1681 if (writebuf
&& !may_write_memory
)
1682 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1683 core_addr_to_string_nz (offset
), plongest (len
));
1685 /* If this is a memory transfer, let the memory-specific code
1686 have a look at it instead. Memory transfers are more
1688 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
)
1689 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1690 writebuf
, offset
, len
);
1693 enum target_object raw_object
= object
;
1695 /* If this is a raw memory transfer, request the normal
1696 memory object from other layers. */
1697 if (raw_object
== TARGET_OBJECT_RAW_MEMORY
)
1698 raw_object
= TARGET_OBJECT_MEMORY
;
1700 retval
= ops
->to_xfer_partial (ops
, raw_object
, annex
, readbuf
,
1701 writebuf
, offset
, len
);
1706 const unsigned char *myaddr
= NULL
;
1708 fprintf_unfiltered (gdb_stdlog
,
1709 "%s:target_xfer_partial "
1710 "(%d, %s, %s, %s, %s, %s) = %s",
1713 (annex
? annex
: "(null)"),
1714 host_address_to_string (readbuf
),
1715 host_address_to_string (writebuf
),
1716 core_addr_to_string_nz (offset
),
1717 plongest (len
), plongest (retval
));
1723 if (retval
> 0 && myaddr
!= NULL
)
1727 fputs_unfiltered (", bytes =", gdb_stdlog
);
1728 for (i
= 0; i
< retval
; i
++)
1730 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1732 if (targetdebug
< 2 && i
> 0)
1734 fprintf_unfiltered (gdb_stdlog
, " ...");
1737 fprintf_unfiltered (gdb_stdlog
, "\n");
1740 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1744 fputc_unfiltered ('\n', gdb_stdlog
);
1749 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
1750 GDB's memory at MYADDR. Returns either 0 for success or an errno value
1751 if any error occurs.
1753 If an error occurs, no guarantee is made about the contents of the data at
1754 MYADDR. In particular, the caller should not depend upon partial reads
1755 filling the buffer with good data. There is no way for the caller to know
1756 how much good data might have been transfered anyway. Callers that can
1757 deal with partial reads should call target_read (which will retry until
1758 it makes no progress, and then return how much was transferred). */
1761 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1763 /* Dispatch to the topmost target, not the flattened current_target.
1764 Memory accesses check target->to_has_(all_)memory, and the
1765 flattened target doesn't inherit those. */
1766 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1767 myaddr
, memaddr
, len
) == len
)
1773 /* Like target_read_memory, but specify explicitly that this is a read from
1774 the target's stack. This may trigger different cache behavior. */
1777 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1779 /* Dispatch to the topmost target, not the flattened current_target.
1780 Memory accesses check target->to_has_(all_)memory, and the
1781 flattened target doesn't inherit those. */
1783 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1784 myaddr
, memaddr
, len
) == len
)
1790 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1791 Returns either 0 for success or an errno value if any error occurs.
1792 If an error occurs, no guarantee is made about how much data got written.
1793 Callers that can deal with partial writes should call target_write. */
1796 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1798 /* Dispatch to the topmost target, not the flattened current_target.
1799 Memory accesses check target->to_has_(all_)memory, and the
1800 flattened target doesn't inherit those. */
1801 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1802 myaddr
, memaddr
, len
) == len
)
1808 /* Write LEN bytes from MYADDR to target raw memory at address
1809 MEMADDR. Returns either 0 for success or an errno value if any
1810 error occurs. If an error occurs, no guarantee is made about how
1811 much data got written. Callers that can deal with partial writes
1812 should call target_write. */
1815 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1817 /* Dispatch to the topmost target, not the flattened current_target.
1818 Memory accesses check target->to_has_(all_)memory, and the
1819 flattened target doesn't inherit those. */
1820 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1821 myaddr
, memaddr
, len
) == len
)
1827 /* Fetch the target's memory map. */
1830 target_memory_map (void)
1832 VEC(mem_region_s
) *result
;
1833 struct mem_region
*last_one
, *this_one
;
1835 struct target_ops
*t
;
1838 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1840 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1841 if (t
->to_memory_map
!= NULL
)
1847 result
= t
->to_memory_map (t
);
1851 qsort (VEC_address (mem_region_s
, result
),
1852 VEC_length (mem_region_s
, result
),
1853 sizeof (struct mem_region
), mem_region_cmp
);
1855 /* Check that regions do not overlap. Simultaneously assign
1856 a numbering for the "mem" commands to use to refer to
1859 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1861 this_one
->number
= ix
;
1863 if (last_one
&& last_one
->hi
> this_one
->lo
)
1865 warning (_("Overlapping regions in memory map: ignoring"));
1866 VEC_free (mem_region_s
, result
);
1869 last_one
= this_one
;
1876 target_flash_erase (ULONGEST address
, LONGEST length
)
1878 struct target_ops
*t
;
1880 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1881 if (t
->to_flash_erase
!= NULL
)
1884 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1885 hex_string (address
), phex (length
, 0));
1886 t
->to_flash_erase (t
, address
, length
);
1894 target_flash_done (void)
1896 struct target_ops
*t
;
1898 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1899 if (t
->to_flash_done
!= NULL
)
1902 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1903 t
->to_flash_done (t
);
1911 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1912 struct cmd_list_element
*c
, const char *value
)
1914 fprintf_filtered (file
,
1915 _("Mode for reading from readonly sections is %s.\n"),
1919 /* More generic transfers. */
1922 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1923 const char *annex
, gdb_byte
*readbuf
,
1924 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1926 if (object
== TARGET_OBJECT_MEMORY
1927 && ops
->deprecated_xfer_memory
!= NULL
)
1928 /* If available, fall back to the target's
1929 "deprecated_xfer_memory" method. */
1934 if (writebuf
!= NULL
)
1936 void *buffer
= xmalloc (len
);
1937 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1939 memcpy (buffer
, writebuf
, len
);
1940 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1941 1/*write*/, NULL
, ops
);
1942 do_cleanups (cleanup
);
1944 if (readbuf
!= NULL
)
1945 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1946 0/*read*/, NULL
, ops
);
1949 else if (xfered
== 0 && errno
== 0)
1950 /* "deprecated_xfer_memory" uses 0, cross checked against
1951 ERRNO as one indication of an error. */
1956 else if (ops
->beneath
!= NULL
)
1957 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1958 readbuf
, writebuf
, offset
, len
);
1963 /* The xfer_partial handler for the topmost target. Unlike the default,
1964 it does not need to handle memory specially; it just passes all
1965 requests down the stack. */
1968 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1969 const char *annex
, gdb_byte
*readbuf
,
1970 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1972 if (ops
->beneath
!= NULL
)
1973 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1974 readbuf
, writebuf
, offset
, len
);
1979 /* Target vector read/write partial wrapper functions. */
1982 target_read_partial (struct target_ops
*ops
,
1983 enum target_object object
,
1984 const char *annex
, gdb_byte
*buf
,
1985 ULONGEST offset
, LONGEST len
)
1987 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
1991 target_write_partial (struct target_ops
*ops
,
1992 enum target_object object
,
1993 const char *annex
, const gdb_byte
*buf
,
1994 ULONGEST offset
, LONGEST len
)
1996 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
1999 /* Wrappers to perform the full transfer. */
2001 /* For docs on target_read see target.h. */
2004 target_read (struct target_ops
*ops
,
2005 enum target_object object
,
2006 const char *annex
, gdb_byte
*buf
,
2007 ULONGEST offset
, LONGEST len
)
2011 while (xfered
< len
)
2013 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
2014 (gdb_byte
*) buf
+ xfered
,
2015 offset
+ xfered
, len
- xfered
);
2017 /* Call an observer, notifying them of the xfer progress? */
2028 /* Assuming that the entire [begin, end) range of memory cannot be
2029 read, try to read whatever subrange is possible to read.
2031 The function returns, in RESULT, either zero or one memory block.
2032 If there's a readable subrange at the beginning, it is completely
2033 read and returned. Any further readable subrange will not be read.
2034 Otherwise, if there's a readable subrange at the end, it will be
2035 completely read and returned. Any readable subranges before it
2036 (obviously, not starting at the beginning), will be ignored. In
2037 other cases -- either no readable subrange, or readable subrange(s)
2038 that is neither at the beginning, or end, nothing is returned.
2040 The purpose of this function is to handle a read across a boundary
2041 of accessible memory in a case when memory map is not available.
2042 The above restrictions are fine for this case, but will give
2043 incorrect results if the memory is 'patchy'. However, supporting
2044 'patchy' memory would require trying to read every single byte,
2045 and it seems unacceptable solution. Explicit memory map is
2046 recommended for this case -- and target_read_memory_robust will
2047 take care of reading multiple ranges then. */
2050 read_whatever_is_readable (struct target_ops
*ops
,
2051 ULONGEST begin
, ULONGEST end
,
2052 VEC(memory_read_result_s
) **result
)
2054 gdb_byte
*buf
= xmalloc (end
- begin
);
2055 ULONGEST current_begin
= begin
;
2056 ULONGEST current_end
= end
;
2058 memory_read_result_s r
;
2060 /* If we previously failed to read 1 byte, nothing can be done here. */
2061 if (end
- begin
<= 1)
2067 /* Check that either first or the last byte is readable, and give up
2068 if not. This heuristic is meant to permit reading accessible memory
2069 at the boundary of accessible region. */
2070 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2071 buf
, begin
, 1) == 1)
2076 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2077 buf
+ (end
-begin
) - 1, end
- 1, 1) == 1)
2088 /* Loop invariant is that the [current_begin, current_end) was previously
2089 found to be not readable as a whole.
2091 Note loop condition -- if the range has 1 byte, we can't divide the range
2092 so there's no point trying further. */
2093 while (current_end
- current_begin
> 1)
2095 ULONGEST first_half_begin
, first_half_end
;
2096 ULONGEST second_half_begin
, second_half_end
;
2098 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2102 first_half_begin
= current_begin
;
2103 first_half_end
= middle
;
2104 second_half_begin
= middle
;
2105 second_half_end
= current_end
;
2109 first_half_begin
= middle
;
2110 first_half_end
= current_end
;
2111 second_half_begin
= current_begin
;
2112 second_half_end
= middle
;
2115 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2116 buf
+ (first_half_begin
- begin
),
2118 first_half_end
- first_half_begin
);
2120 if (xfer
== first_half_end
- first_half_begin
)
2122 /* This half reads up fine. So, the error must be in the
2124 current_begin
= second_half_begin
;
2125 current_end
= second_half_end
;
2129 /* This half is not readable. Because we've tried one byte, we
2130 know some part of this half if actually redable. Go to the next
2131 iteration to divide again and try to read.
2133 We don't handle the other half, because this function only tries
2134 to read a single readable subrange. */
2135 current_begin
= first_half_begin
;
2136 current_end
= first_half_end
;
2142 /* The [begin, current_begin) range has been read. */
2144 r
.end
= current_begin
;
2149 /* The [current_end, end) range has been read. */
2150 LONGEST rlen
= end
- current_end
;
2152 r
.data
= xmalloc (rlen
);
2153 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2154 r
.begin
= current_end
;
2158 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2162 free_memory_read_result_vector (void *x
)
2164 VEC(memory_read_result_s
) *v
= x
;
2165 memory_read_result_s
*current
;
2168 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2170 xfree (current
->data
);
2172 VEC_free (memory_read_result_s
, v
);
2175 VEC(memory_read_result_s
) *
2176 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2178 VEC(memory_read_result_s
) *result
= 0;
2181 while (xfered
< len
)
2183 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2186 /* If there is no explicit region, a fake one should be created. */
2187 gdb_assert (region
);
2189 if (region
->hi
== 0)
2190 rlen
= len
- xfered
;
2192 rlen
= region
->hi
- offset
;
2194 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2196 /* Cannot read this region. Note that we can end up here only
2197 if the region is explicitly marked inaccessible, or
2198 'inaccessible-by-default' is in effect. */
2203 LONGEST to_read
= min (len
- xfered
, rlen
);
2204 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2206 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2207 (gdb_byte
*) buffer
,
2208 offset
+ xfered
, to_read
);
2209 /* Call an observer, notifying them of the xfer progress? */
2212 /* Got an error reading full chunk. See if maybe we can read
2215 read_whatever_is_readable (ops
, offset
+ xfered
,
2216 offset
+ xfered
+ to_read
, &result
);
2221 struct memory_read_result r
;
2223 r
.begin
= offset
+ xfered
;
2224 r
.end
= r
.begin
+ xfer
;
2225 VEC_safe_push (memory_read_result_s
, result
, &r
);
2235 /* An alternative to target_write with progress callbacks. */
2238 target_write_with_progress (struct target_ops
*ops
,
2239 enum target_object object
,
2240 const char *annex
, const gdb_byte
*buf
,
2241 ULONGEST offset
, LONGEST len
,
2242 void (*progress
) (ULONGEST
, void *), void *baton
)
2246 /* Give the progress callback a chance to set up. */
2248 (*progress
) (0, baton
);
2250 while (xfered
< len
)
2252 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
2253 (gdb_byte
*) buf
+ xfered
,
2254 offset
+ xfered
, len
- xfered
);
2262 (*progress
) (xfer
, baton
);
2270 /* For docs on target_write see target.h. */
2273 target_write (struct target_ops
*ops
,
2274 enum target_object object
,
2275 const char *annex
, const gdb_byte
*buf
,
2276 ULONGEST offset
, LONGEST len
)
2278 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2282 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2283 the size of the transferred data. PADDING additional bytes are
2284 available in *BUF_P. This is a helper function for
2285 target_read_alloc; see the declaration of that function for more
2289 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2290 const char *annex
, gdb_byte
**buf_p
, int padding
)
2292 size_t buf_alloc
, buf_pos
;
2296 /* This function does not have a length parameter; it reads the
2297 entire OBJECT). Also, it doesn't support objects fetched partly
2298 from one target and partly from another (in a different stratum,
2299 e.g. a core file and an executable). Both reasons make it
2300 unsuitable for reading memory. */
2301 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2303 /* Start by reading up to 4K at a time. The target will throttle
2304 this number down if necessary. */
2306 buf
= xmalloc (buf_alloc
);
2310 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2311 buf_pos
, buf_alloc
- buf_pos
- padding
);
2314 /* An error occurred. */
2320 /* Read all there was. */
2330 /* If the buffer is filling up, expand it. */
2331 if (buf_alloc
< buf_pos
* 2)
2334 buf
= xrealloc (buf
, buf_alloc
);
2341 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2342 the size of the transferred data. See the declaration in "target.h"
2343 function for more information about the return value. */
2346 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2347 const char *annex
, gdb_byte
**buf_p
)
2349 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2352 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2353 returned as a string, allocated using xmalloc. If an error occurs
2354 or the transfer is unsupported, NULL is returned. Empty objects
2355 are returned as allocated but empty strings. A warning is issued
2356 if the result contains any embedded NUL bytes. */
2359 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2363 LONGEST i
, transferred
;
2365 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2367 if (transferred
< 0)
2370 if (transferred
== 0)
2371 return xstrdup ("");
2373 buffer
[transferred
] = 0;
2375 /* Check for embedded NUL bytes; but allow trailing NULs. */
2376 for (i
= strlen (buffer
); i
< transferred
; i
++)
2379 warning (_("target object %d, annex %s, "
2380 "contained unexpected null characters"),
2381 (int) object
, annex
? annex
: "(none)");
2385 return (char *) buffer
;
2388 /* Memory transfer methods. */
2391 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2394 /* This method is used to read from an alternate, non-current
2395 target. This read must bypass the overlay support (as symbols
2396 don't match this target), and GDB's internal cache (wrong cache
2397 for this target). */
2398 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2400 memory_error (EIO
, addr
);
2404 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2405 int len
, enum bfd_endian byte_order
)
2407 gdb_byte buf
[sizeof (ULONGEST
)];
2409 gdb_assert (len
<= sizeof (buf
));
2410 get_target_memory (ops
, addr
, buf
, len
);
2411 return extract_unsigned_integer (buf
, len
, byte_order
);
2415 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2416 struct bp_target_info
*bp_tgt
)
2418 if (!may_insert_breakpoints
)
2420 warning (_("May not insert breakpoints"));
2424 return (*current_target
.to_insert_breakpoint
) (gdbarch
, bp_tgt
);
2428 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2429 struct bp_target_info
*bp_tgt
)
2431 /* This is kind of a weird case to handle, but the permission might
2432 have been changed after breakpoints were inserted - in which case
2433 we should just take the user literally and assume that any
2434 breakpoints should be left in place. */
2435 if (!may_insert_breakpoints
)
2437 warning (_("May not remove breakpoints"));
2441 return (*current_target
.to_remove_breakpoint
) (gdbarch
, bp_tgt
);
2445 target_info (char *args
, int from_tty
)
2447 struct target_ops
*t
;
2448 int has_all_mem
= 0;
2450 if (symfile_objfile
!= NULL
)
2451 printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile
->name
);
2453 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2455 if (!(*t
->to_has_memory
) (t
))
2458 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2461 printf_unfiltered (_("\tWhile running this, "
2462 "GDB does not access memory from...\n"));
2463 printf_unfiltered ("%s:\n", t
->to_longname
);
2464 (t
->to_files_info
) (t
);
2465 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2469 /* This function is called before any new inferior is created, e.g.
2470 by running a program, attaching, or connecting to a target.
2471 It cleans up any state from previous invocations which might
2472 change between runs. This is a subset of what target_preopen
2473 resets (things which might change between targets). */
2476 target_pre_inferior (int from_tty
)
2478 /* Clear out solib state. Otherwise the solib state of the previous
2479 inferior might have survived and is entirely wrong for the new
2480 target. This has been observed on GNU/Linux using glibc 2.3. How
2492 Cannot access memory at address 0xdeadbeef
2495 /* In some OSs, the shared library list is the same/global/shared
2496 across inferiors. If code is shared between processes, so are
2497 memory regions and features. */
2498 if (!gdbarch_has_global_solist (target_gdbarch ()))
2500 no_shared_libraries (NULL
, from_tty
);
2502 invalidate_target_mem_regions ();
2504 target_clear_description ();
2507 agent_capability_invalidate ();
2510 /* Callback for iterate_over_inferiors. Gets rid of the given
2514 dispose_inferior (struct inferior
*inf
, void *args
)
2516 struct thread_info
*thread
;
2518 thread
= any_thread_of_process (inf
->pid
);
2521 switch_to_thread (thread
->ptid
);
2523 /* Core inferiors actually should be detached, not killed. */
2524 if (target_has_execution
)
2527 target_detach (NULL
, 0);
2533 /* This is to be called by the open routine before it does
2537 target_preopen (int from_tty
)
2541 if (have_inferiors ())
2544 || !have_live_inferiors ()
2545 || query (_("A program is being debugged already. Kill it? ")))
2546 iterate_over_inferiors (dispose_inferior
, NULL
);
2548 error (_("Program not killed."));
2551 /* Calling target_kill may remove the target from the stack. But if
2552 it doesn't (which seems like a win for UDI), remove it now. */
2553 /* Leave the exec target, though. The user may be switching from a
2554 live process to a core of the same program. */
2555 pop_all_targets_above (file_stratum
, 0);
2557 target_pre_inferior (from_tty
);
2560 /* Detach a target after doing deferred register stores. */
2563 target_detach (char *args
, int from_tty
)
2565 struct target_ops
* t
;
2567 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2568 /* Don't remove global breakpoints here. They're removed on
2569 disconnection from the target. */
2572 /* If we're in breakpoints-always-inserted mode, have to remove
2573 them before detaching. */
2574 remove_breakpoints_pid (PIDGET (inferior_ptid
));
2576 prepare_for_detach ();
2578 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2580 if (t
->to_detach
!= NULL
)
2582 t
->to_detach (t
, args
, from_tty
);
2584 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2590 internal_error (__FILE__
, __LINE__
, _("could not find a target to detach"));
2594 target_disconnect (char *args
, int from_tty
)
2596 struct target_ops
*t
;
2598 /* If we're in breakpoints-always-inserted mode or if breakpoints
2599 are global across processes, we have to remove them before
2601 remove_breakpoints ();
2603 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2604 if (t
->to_disconnect
!= NULL
)
2607 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2609 t
->to_disconnect (t
, args
, from_tty
);
2617 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2619 struct target_ops
*t
;
2621 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2623 if (t
->to_wait
!= NULL
)
2625 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2629 char *status_string
;
2630 char *options_string
;
2632 status_string
= target_waitstatus_to_string (status
);
2633 options_string
= target_options_to_string (options
);
2634 fprintf_unfiltered (gdb_stdlog
,
2635 "target_wait (%d, status, options={%s})"
2637 PIDGET (ptid
), options_string
,
2638 PIDGET (retval
), status_string
);
2639 xfree (status_string
);
2640 xfree (options_string
);
2651 target_pid_to_str (ptid_t ptid
)
2653 struct target_ops
*t
;
2655 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2657 if (t
->to_pid_to_str
!= NULL
)
2658 return (*t
->to_pid_to_str
) (t
, ptid
);
2661 return normal_pid_to_str (ptid
);
2665 target_thread_name (struct thread_info
*info
)
2667 struct target_ops
*t
;
2669 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2671 if (t
->to_thread_name
!= NULL
)
2672 return (*t
->to_thread_name
) (info
);
2679 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2681 struct target_ops
*t
;
2683 target_dcache_invalidate ();
2685 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2687 if (t
->to_resume
!= NULL
)
2689 t
->to_resume (t
, ptid
, step
, signal
);
2691 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2693 step
? "step" : "continue",
2694 gdb_signal_to_name (signal
));
2696 registers_changed_ptid (ptid
);
2697 set_executing (ptid
, 1);
2698 set_running (ptid
, 1);
2699 clear_inline_frame_state (ptid
);
2708 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2710 struct target_ops
*t
;
2712 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2714 if (t
->to_pass_signals
!= NULL
)
2720 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2723 for (i
= 0; i
< numsigs
; i
++)
2724 if (pass_signals
[i
])
2725 fprintf_unfiltered (gdb_stdlog
, " %s",
2726 gdb_signal_to_name (i
));
2728 fprintf_unfiltered (gdb_stdlog
, " })\n");
2731 (*t
->to_pass_signals
) (numsigs
, pass_signals
);
2738 target_program_signals (int numsigs
, unsigned char *program_signals
)
2740 struct target_ops
*t
;
2742 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2744 if (t
->to_program_signals
!= NULL
)
2750 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2753 for (i
= 0; i
< numsigs
; i
++)
2754 if (program_signals
[i
])
2755 fprintf_unfiltered (gdb_stdlog
, " %s",
2756 gdb_signal_to_name (i
));
2758 fprintf_unfiltered (gdb_stdlog
, " })\n");
2761 (*t
->to_program_signals
) (numsigs
, program_signals
);
2767 /* Look through the list of possible targets for a target that can
2771 target_follow_fork (int follow_child
)
2773 struct target_ops
*t
;
2775 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2777 if (t
->to_follow_fork
!= NULL
)
2779 int retval
= t
->to_follow_fork (t
, follow_child
);
2782 fprintf_unfiltered (gdb_stdlog
, "target_follow_fork (%d) = %d\n",
2783 follow_child
, retval
);
2788 /* Some target returned a fork event, but did not know how to follow it. */
2789 internal_error (__FILE__
, __LINE__
,
2790 _("could not find a target to follow fork"));
2794 target_mourn_inferior (void)
2796 struct target_ops
*t
;
2798 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2800 if (t
->to_mourn_inferior
!= NULL
)
2802 t
->to_mourn_inferior (t
);
2804 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2806 /* We no longer need to keep handles on any of the object files.
2807 Make sure to release them to avoid unnecessarily locking any
2808 of them while we're not actually debugging. */
2809 bfd_cache_close_all ();
2815 internal_error (__FILE__
, __LINE__
,
2816 _("could not find a target to follow mourn inferior"));
2819 /* Look for a target which can describe architectural features, starting
2820 from TARGET. If we find one, return its description. */
2822 const struct target_desc
*
2823 target_read_description (struct target_ops
*target
)
2825 struct target_ops
*t
;
2827 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2828 if (t
->to_read_description
!= NULL
)
2830 const struct target_desc
*tdesc
;
2832 tdesc
= t
->to_read_description (t
);
2840 /* The default implementation of to_search_memory.
2841 This implements a basic search of memory, reading target memory and
2842 performing the search here (as opposed to performing the search in on the
2843 target side with, for example, gdbserver). */
2846 simple_search_memory (struct target_ops
*ops
,
2847 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2848 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2849 CORE_ADDR
*found_addrp
)
2851 /* NOTE: also defined in find.c testcase. */
2852 #define SEARCH_CHUNK_SIZE 16000
2853 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2854 /* Buffer to hold memory contents for searching. */
2855 gdb_byte
*search_buf
;
2856 unsigned search_buf_size
;
2857 struct cleanup
*old_cleanups
;
2859 search_buf_size
= chunk_size
+ pattern_len
- 1;
2861 /* No point in trying to allocate a buffer larger than the search space. */
2862 if (search_space_len
< search_buf_size
)
2863 search_buf_size
= search_space_len
;
2865 search_buf
= malloc (search_buf_size
);
2866 if (search_buf
== NULL
)
2867 error (_("Unable to allocate memory to perform the search."));
2868 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2870 /* Prime the search buffer. */
2872 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2873 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2875 warning (_("Unable to access %s bytes of target "
2876 "memory at %s, halting search."),
2877 pulongest (search_buf_size
), hex_string (start_addr
));
2878 do_cleanups (old_cleanups
);
2882 /* Perform the search.
2884 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2885 When we've scanned N bytes we copy the trailing bytes to the start and
2886 read in another N bytes. */
2888 while (search_space_len
>= pattern_len
)
2890 gdb_byte
*found_ptr
;
2891 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2893 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2894 pattern
, pattern_len
);
2896 if (found_ptr
!= NULL
)
2898 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2900 *found_addrp
= found_addr
;
2901 do_cleanups (old_cleanups
);
2905 /* Not found in this chunk, skip to next chunk. */
2907 /* Don't let search_space_len wrap here, it's unsigned. */
2908 if (search_space_len
>= chunk_size
)
2909 search_space_len
-= chunk_size
;
2911 search_space_len
= 0;
2913 if (search_space_len
>= pattern_len
)
2915 unsigned keep_len
= search_buf_size
- chunk_size
;
2916 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2919 /* Copy the trailing part of the previous iteration to the front
2920 of the buffer for the next iteration. */
2921 gdb_assert (keep_len
== pattern_len
- 1);
2922 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2924 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2926 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2927 search_buf
+ keep_len
, read_addr
,
2928 nr_to_read
) != nr_to_read
)
2930 warning (_("Unable to access %s bytes of target "
2931 "memory at %s, halting search."),
2932 plongest (nr_to_read
),
2933 hex_string (read_addr
));
2934 do_cleanups (old_cleanups
);
2938 start_addr
+= chunk_size
;
2944 do_cleanups (old_cleanups
);
2948 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2949 sequence of bytes in PATTERN with length PATTERN_LEN.
2951 The result is 1 if found, 0 if not found, and -1 if there was an error
2952 requiring halting of the search (e.g. memory read error).
2953 If the pattern is found the address is recorded in FOUND_ADDRP. */
2956 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2957 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2958 CORE_ADDR
*found_addrp
)
2960 struct target_ops
*t
;
2963 /* We don't use INHERIT to set current_target.to_search_memory,
2964 so we have to scan the target stack and handle targetdebug
2968 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2969 hex_string (start_addr
));
2971 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2972 if (t
->to_search_memory
!= NULL
)
2977 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2978 pattern
, pattern_len
, found_addrp
);
2982 /* If a special version of to_search_memory isn't available, use the
2984 found
= simple_search_memory (current_target
.beneath
,
2985 start_addr
, search_space_len
,
2986 pattern
, pattern_len
, found_addrp
);
2990 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2995 /* Look through the currently pushed targets. If none of them will
2996 be able to restart the currently running process, issue an error
3000 target_require_runnable (void)
3002 struct target_ops
*t
;
3004 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3006 /* If this target knows how to create a new program, then
3007 assume we will still be able to after killing the current
3008 one. Either killing and mourning will not pop T, or else
3009 find_default_run_target will find it again. */
3010 if (t
->to_create_inferior
!= NULL
)
3013 /* Do not worry about thread_stratum targets that can not
3014 create inferiors. Assume they will be pushed again if
3015 necessary, and continue to the process_stratum. */
3016 if (t
->to_stratum
== thread_stratum
3017 || t
->to_stratum
== arch_stratum
)
3020 error (_("The \"%s\" target does not support \"run\". "
3021 "Try \"help target\" or \"continue\"."),
3025 /* This function is only called if the target is running. In that
3026 case there should have been a process_stratum target and it
3027 should either know how to create inferiors, or not... */
3028 internal_error (__FILE__
, __LINE__
, _("No targets found"));
3031 /* Look through the list of possible targets for a target that can
3032 execute a run or attach command without any other data. This is
3033 used to locate the default process stratum.
3035 If DO_MESG is not NULL, the result is always valid (error() is
3036 called for errors); else, return NULL on error. */
3038 static struct target_ops
*
3039 find_default_run_target (char *do_mesg
)
3041 struct target_ops
**t
;
3042 struct target_ops
*runable
= NULL
;
3047 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3050 if ((*t
)->to_can_run
&& target_can_run (*t
))
3060 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3069 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3071 struct target_ops
*t
;
3073 t
= find_default_run_target ("attach");
3074 (t
->to_attach
) (t
, args
, from_tty
);
3079 find_default_create_inferior (struct target_ops
*ops
,
3080 char *exec_file
, char *allargs
, char **env
,
3083 struct target_ops
*t
;
3085 t
= find_default_run_target ("run");
3086 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3091 find_default_can_async_p (void)
3093 struct target_ops
*t
;
3095 /* This may be called before the target is pushed on the stack;
3096 look for the default process stratum. If there's none, gdb isn't
3097 configured with a native debugger, and target remote isn't
3099 t
= find_default_run_target (NULL
);
3100 if (t
&& t
->to_can_async_p
)
3101 return (t
->to_can_async_p
) ();
3106 find_default_is_async_p (void)
3108 struct target_ops
*t
;
3110 /* This may be called before the target is pushed on the stack;
3111 look for the default process stratum. If there's none, gdb isn't
3112 configured with a native debugger, and target remote isn't
3114 t
= find_default_run_target (NULL
);
3115 if (t
&& t
->to_is_async_p
)
3116 return (t
->to_is_async_p
) ();
3121 find_default_supports_non_stop (void)
3123 struct target_ops
*t
;
3125 t
= find_default_run_target (NULL
);
3126 if (t
&& t
->to_supports_non_stop
)
3127 return (t
->to_supports_non_stop
) ();
3132 target_supports_non_stop (void)
3134 struct target_ops
*t
;
3136 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3137 if (t
->to_supports_non_stop
)
3138 return t
->to_supports_non_stop ();
3143 /* Implement the "info proc" command. */
3146 target_info_proc (char *args
, enum info_proc_what what
)
3148 struct target_ops
*t
;
3150 /* If we're already connected to something that can get us OS
3151 related data, use it. Otherwise, try using the native
3153 if (current_target
.to_stratum
>= process_stratum
)
3154 t
= current_target
.beneath
;
3156 t
= find_default_run_target (NULL
);
3158 for (; t
!= NULL
; t
= t
->beneath
)
3160 if (t
->to_info_proc
!= NULL
)
3162 t
->to_info_proc (t
, args
, what
);
3165 fprintf_unfiltered (gdb_stdlog
,
3166 "target_info_proc (\"%s\", %d)\n", args
, what
);
3176 find_default_supports_disable_randomization (void)
3178 struct target_ops
*t
;
3180 t
= find_default_run_target (NULL
);
3181 if (t
&& t
->to_supports_disable_randomization
)
3182 return (t
->to_supports_disable_randomization
) ();
3187 target_supports_disable_randomization (void)
3189 struct target_ops
*t
;
3191 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3192 if (t
->to_supports_disable_randomization
)
3193 return t
->to_supports_disable_randomization ();
3199 target_get_osdata (const char *type
)
3201 struct target_ops
*t
;
3203 /* If we're already connected to something that can get us OS
3204 related data, use it. Otherwise, try using the native
3206 if (current_target
.to_stratum
>= process_stratum
)
3207 t
= current_target
.beneath
;
3209 t
= find_default_run_target ("get OS data");
3214 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3217 /* Determine the current address space of thread PTID. */
3219 struct address_space
*
3220 target_thread_address_space (ptid_t ptid
)
3222 struct address_space
*aspace
;
3223 struct inferior
*inf
;
3224 struct target_ops
*t
;
3226 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3228 if (t
->to_thread_address_space
!= NULL
)
3230 aspace
= t
->to_thread_address_space (t
, ptid
);
3231 gdb_assert (aspace
);
3234 fprintf_unfiltered (gdb_stdlog
,
3235 "target_thread_address_space (%s) = %d\n",
3236 target_pid_to_str (ptid
),
3237 address_space_num (aspace
));
3242 /* Fall-back to the "main" address space of the inferior. */
3243 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3245 if (inf
== NULL
|| inf
->aspace
== NULL
)
3246 internal_error (__FILE__
, __LINE__
,
3247 _("Can't determine the current "
3248 "address space of thread %s\n"),
3249 target_pid_to_str (ptid
));
3255 /* Target file operations. */
3257 static struct target_ops
*
3258 default_fileio_target (void)
3260 /* If we're already connected to something that can perform
3261 file I/O, use it. Otherwise, try using the native target. */
3262 if (current_target
.to_stratum
>= process_stratum
)
3263 return current_target
.beneath
;
3265 return find_default_run_target ("file I/O");
3268 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3269 target file descriptor, or -1 if an error occurs (and set
3272 target_fileio_open (const char *filename
, int flags
, int mode
,
3275 struct target_ops
*t
;
3277 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3279 if (t
->to_fileio_open
!= NULL
)
3281 int fd
= t
->to_fileio_open (filename
, flags
, mode
, target_errno
);
3284 fprintf_unfiltered (gdb_stdlog
,
3285 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3286 filename
, flags
, mode
,
3287 fd
, fd
!= -1 ? 0 : *target_errno
);
3292 *target_errno
= FILEIO_ENOSYS
;
3296 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3297 Return the number of bytes written, or -1 if an error occurs
3298 (and set *TARGET_ERRNO). */
3300 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3301 ULONGEST offset
, int *target_errno
)
3303 struct target_ops
*t
;
3305 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3307 if (t
->to_fileio_pwrite
!= NULL
)
3309 int ret
= t
->to_fileio_pwrite (fd
, write_buf
, len
, offset
,
3313 fprintf_unfiltered (gdb_stdlog
,
3314 "target_fileio_pwrite (%d,...,%d,%s) "
3316 fd
, len
, pulongest (offset
),
3317 ret
, ret
!= -1 ? 0 : *target_errno
);
3322 *target_errno
= FILEIO_ENOSYS
;
3326 /* Read up to LEN bytes FD on the target into READ_BUF.
3327 Return the number of bytes read, or -1 if an error occurs
3328 (and set *TARGET_ERRNO). */
3330 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3331 ULONGEST offset
, int *target_errno
)
3333 struct target_ops
*t
;
3335 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3337 if (t
->to_fileio_pread
!= NULL
)
3339 int ret
= t
->to_fileio_pread (fd
, read_buf
, len
, offset
,
3343 fprintf_unfiltered (gdb_stdlog
,
3344 "target_fileio_pread (%d,...,%d,%s) "
3346 fd
, len
, pulongest (offset
),
3347 ret
, ret
!= -1 ? 0 : *target_errno
);
3352 *target_errno
= FILEIO_ENOSYS
;
3356 /* Close FD on the target. Return 0, or -1 if an error occurs
3357 (and set *TARGET_ERRNO). */
3359 target_fileio_close (int fd
, int *target_errno
)
3361 struct target_ops
*t
;
3363 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3365 if (t
->to_fileio_close
!= NULL
)
3367 int ret
= t
->to_fileio_close (fd
, target_errno
);
3370 fprintf_unfiltered (gdb_stdlog
,
3371 "target_fileio_close (%d) = %d (%d)\n",
3372 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3377 *target_errno
= FILEIO_ENOSYS
;
3381 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3382 occurs (and set *TARGET_ERRNO). */
3384 target_fileio_unlink (const char *filename
, int *target_errno
)
3386 struct target_ops
*t
;
3388 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3390 if (t
->to_fileio_unlink
!= NULL
)
3392 int ret
= t
->to_fileio_unlink (filename
, target_errno
);
3395 fprintf_unfiltered (gdb_stdlog
,
3396 "target_fileio_unlink (%s) = %d (%d)\n",
3397 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3402 *target_errno
= FILEIO_ENOSYS
;
3406 /* Read value of symbolic link FILENAME on the target. Return a
3407 null-terminated string allocated via xmalloc, or NULL if an error
3408 occurs (and set *TARGET_ERRNO). */
3410 target_fileio_readlink (const char *filename
, int *target_errno
)
3412 struct target_ops
*t
;
3414 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3416 if (t
->to_fileio_readlink
!= NULL
)
3418 char *ret
= t
->to_fileio_readlink (filename
, target_errno
);
3421 fprintf_unfiltered (gdb_stdlog
,
3422 "target_fileio_readlink (%s) = %s (%d)\n",
3423 filename
, ret
? ret
: "(nil)",
3424 ret
? 0 : *target_errno
);
3429 *target_errno
= FILEIO_ENOSYS
;
3434 target_fileio_close_cleanup (void *opaque
)
3436 int fd
= *(int *) opaque
;
3439 target_fileio_close (fd
, &target_errno
);
3442 /* Read target file FILENAME. Store the result in *BUF_P and
3443 return the size of the transferred data. PADDING additional bytes are
3444 available in *BUF_P. This is a helper function for
3445 target_fileio_read_alloc; see the declaration of that function for more
3449 target_fileio_read_alloc_1 (const char *filename
,
3450 gdb_byte
**buf_p
, int padding
)
3452 struct cleanup
*close_cleanup
;
3453 size_t buf_alloc
, buf_pos
;
3459 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3463 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3465 /* Start by reading up to 4K at a time. The target will throttle
3466 this number down if necessary. */
3468 buf
= xmalloc (buf_alloc
);
3472 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3473 buf_alloc
- buf_pos
- padding
, buf_pos
,
3477 /* An error occurred. */
3478 do_cleanups (close_cleanup
);
3484 /* Read all there was. */
3485 do_cleanups (close_cleanup
);
3495 /* If the buffer is filling up, expand it. */
3496 if (buf_alloc
< buf_pos
* 2)
3499 buf
= xrealloc (buf
, buf_alloc
);
3506 /* Read target file FILENAME. Store the result in *BUF_P and return
3507 the size of the transferred data. See the declaration in "target.h"
3508 function for more information about the return value. */
3511 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3513 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3516 /* Read target file FILENAME. The result is NUL-terminated and
3517 returned as a string, allocated using xmalloc. If an error occurs
3518 or the transfer is unsupported, NULL is returned. Empty objects
3519 are returned as allocated but empty strings. A warning is issued
3520 if the result contains any embedded NUL bytes. */
3523 target_fileio_read_stralloc (const char *filename
)
3526 LONGEST i
, transferred
;
3528 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3530 if (transferred
< 0)
3533 if (transferred
== 0)
3534 return xstrdup ("");
3536 buffer
[transferred
] = 0;
3538 /* Check for embedded NUL bytes; but allow trailing NULs. */
3539 for (i
= strlen (buffer
); i
< transferred
; i
++)
3542 warning (_("target file %s "
3543 "contained unexpected null characters"),
3548 return (char *) buffer
;
3553 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3555 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3559 default_watchpoint_addr_within_range (struct target_ops
*target
,
3561 CORE_ADDR start
, int length
)
3563 return addr
>= start
&& addr
< start
+ length
;
3566 static struct gdbarch
*
3567 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3569 return target_gdbarch ();
3585 return_minus_one (void)
3590 /* Find a single runnable target in the stack and return it. If for
3591 some reason there is more than one, return NULL. */
3594 find_run_target (void)
3596 struct target_ops
**t
;
3597 struct target_ops
*runable
= NULL
;
3602 for (t
= target_structs
; t
< target_structs
+ target_struct_size
; ++t
)
3604 if ((*t
)->to_can_run
&& target_can_run (*t
))
3611 return (count
== 1 ? runable
: NULL
);
3615 * Find the next target down the stack from the specified target.
3619 find_target_beneath (struct target_ops
*t
)
3625 /* The inferior process has died. Long live the inferior! */
3628 generic_mourn_inferior (void)
3632 ptid
= inferior_ptid
;
3633 inferior_ptid
= null_ptid
;
3635 /* Mark breakpoints uninserted in case something tries to delete a
3636 breakpoint while we delete the inferior's threads (which would
3637 fail, since the inferior is long gone). */
3638 mark_breakpoints_out ();
3640 if (!ptid_equal (ptid
, null_ptid
))
3642 int pid
= ptid_get_pid (ptid
);
3643 exit_inferior (pid
);
3646 /* Note this wipes step-resume breakpoints, so needs to be done
3647 after exit_inferior, which ends up referencing the step-resume
3648 breakpoints through clear_thread_inferior_resources. */
3649 breakpoint_init_inferior (inf_exited
);
3651 registers_changed ();
3653 reopen_exec_file ();
3654 reinit_frame_cache ();
3656 if (deprecated_detach_hook
)
3657 deprecated_detach_hook ();
3660 /* Convert a normal process ID to a string. Returns the string in a
3664 normal_pid_to_str (ptid_t ptid
)
3666 static char buf
[32];
3668 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3673 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3675 return normal_pid_to_str (ptid
);
3678 /* Error-catcher for target_find_memory_regions. */
3680 dummy_find_memory_regions (find_memory_region_ftype ignore1
, void *ignore2
)
3682 error (_("Command not implemented for this target."));
3686 /* Error-catcher for target_make_corefile_notes. */
3688 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
3690 error (_("Command not implemented for this target."));
3694 /* Error-catcher for target_get_bookmark. */
3696 dummy_get_bookmark (char *ignore1
, int ignore2
)
3702 /* Error-catcher for target_goto_bookmark. */
3704 dummy_goto_bookmark (gdb_byte
*ignore
, int from_tty
)
3709 /* Set up the handful of non-empty slots needed by the dummy target
3713 init_dummy_target (void)
3715 dummy_target
.to_shortname
= "None";
3716 dummy_target
.to_longname
= "None";
3717 dummy_target
.to_doc
= "";
3718 dummy_target
.to_attach
= find_default_attach
;
3719 dummy_target
.to_detach
=
3720 (void (*)(struct target_ops
*, char *, int))target_ignore
;
3721 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3722 dummy_target
.to_can_async_p
= find_default_can_async_p
;
3723 dummy_target
.to_is_async_p
= find_default_is_async_p
;
3724 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3725 dummy_target
.to_supports_disable_randomization
3726 = find_default_supports_disable_randomization
;
3727 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3728 dummy_target
.to_stratum
= dummy_stratum
;
3729 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
3730 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
3731 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
3732 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
3733 dummy_target
.to_xfer_partial
= default_xfer_partial
;
3734 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3735 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3736 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3737 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3738 dummy_target
.to_has_execution
3739 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3740 dummy_target
.to_stopped_by_watchpoint
= return_zero
;
3741 dummy_target
.to_stopped_data_address
=
3742 (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
;
3743 dummy_target
.to_magic
= OPS_MAGIC
;
3747 debug_to_open (char *args
, int from_tty
)
3749 debug_target
.to_open (args
, from_tty
);
3751 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3755 target_close (struct target_ops
*targ
, int quitting
)
3757 if (targ
->to_xclose
!= NULL
)
3758 targ
->to_xclose (targ
, quitting
);
3759 else if (targ
->to_close
!= NULL
)
3760 targ
->to_close (quitting
);
3763 fprintf_unfiltered (gdb_stdlog
, "target_close (%d)\n", quitting
);
3767 target_attach (char *args
, int from_tty
)
3769 struct target_ops
*t
;
3771 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3773 if (t
->to_attach
!= NULL
)
3775 t
->to_attach (t
, args
, from_tty
);
3777 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3783 internal_error (__FILE__
, __LINE__
,
3784 _("could not find a target to attach"));
3788 target_thread_alive (ptid_t ptid
)
3790 struct target_ops
*t
;
3792 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3794 if (t
->to_thread_alive
!= NULL
)
3798 retval
= t
->to_thread_alive (t
, ptid
);
3800 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3801 PIDGET (ptid
), retval
);
3811 target_find_new_threads (void)
3813 struct target_ops
*t
;
3815 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3817 if (t
->to_find_new_threads
!= NULL
)
3819 t
->to_find_new_threads (t
);
3821 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3829 target_stop (ptid_t ptid
)
3833 warning (_("May not interrupt or stop the target, ignoring attempt"));
3837 (*current_target
.to_stop
) (ptid
);
3841 debug_to_post_attach (int pid
)
3843 debug_target
.to_post_attach (pid
);
3845 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3848 /* Return a pretty printed form of target_waitstatus.
3849 Space for the result is malloc'd, caller must free. */
3852 target_waitstatus_to_string (const struct target_waitstatus
*ws
)
3854 const char *kind_str
= "status->kind = ";
3858 case TARGET_WAITKIND_EXITED
:
3859 return xstrprintf ("%sexited, status = %d",
3860 kind_str
, ws
->value
.integer
);
3861 case TARGET_WAITKIND_STOPPED
:
3862 return xstrprintf ("%sstopped, signal = %s",
3863 kind_str
, gdb_signal_to_name (ws
->value
.sig
));
3864 case TARGET_WAITKIND_SIGNALLED
:
3865 return xstrprintf ("%ssignalled, signal = %s",
3866 kind_str
, gdb_signal_to_name (ws
->value
.sig
));
3867 case TARGET_WAITKIND_LOADED
:
3868 return xstrprintf ("%sloaded", kind_str
);
3869 case TARGET_WAITKIND_FORKED
:
3870 return xstrprintf ("%sforked", kind_str
);
3871 case TARGET_WAITKIND_VFORKED
:
3872 return xstrprintf ("%svforked", kind_str
);
3873 case TARGET_WAITKIND_EXECD
:
3874 return xstrprintf ("%sexecd", kind_str
);
3875 case TARGET_WAITKIND_VFORK_DONE
:
3876 return xstrprintf ("%svfork-done", kind_str
);
3877 case TARGET_WAITKIND_SYSCALL_ENTRY
:
3878 return xstrprintf ("%sentered syscall", kind_str
);
3879 case TARGET_WAITKIND_SYSCALL_RETURN
:
3880 return xstrprintf ("%sexited syscall", kind_str
);
3881 case TARGET_WAITKIND_SPURIOUS
:
3882 return xstrprintf ("%sspurious", kind_str
);
3883 case TARGET_WAITKIND_IGNORE
:
3884 return xstrprintf ("%signore", kind_str
);
3885 case TARGET_WAITKIND_NO_HISTORY
:
3886 return xstrprintf ("%sno-history", kind_str
);
3887 case TARGET_WAITKIND_NO_RESUMED
:
3888 return xstrprintf ("%sno-resumed", kind_str
);
3890 return xstrprintf ("%sunknown???", kind_str
);
3894 /* Concatenate ELEM to LIST, a comma separate list, and return the
3895 result. The LIST incoming argument is released. */
3898 str_comma_list_concat_elem (char *list
, const char *elem
)
3901 return xstrdup (elem
);
3903 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3906 /* Helper for target_options_to_string. If OPT is present in
3907 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3908 Returns the new resulting string. OPT is removed from
3912 do_option (int *target_options
, char *ret
,
3913 int opt
, char *opt_str
)
3915 if ((*target_options
& opt
) != 0)
3917 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3918 *target_options
&= ~opt
;
3925 target_options_to_string (int target_options
)
3929 #define DO_TARG_OPTION(OPT) \
3930 ret = do_option (&target_options, ret, OPT, #OPT)
3932 DO_TARG_OPTION (TARGET_WNOHANG
);
3934 if (target_options
!= 0)
3935 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3943 debug_print_register (const char * func
,
3944 struct regcache
*regcache
, int regno
)
3946 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3948 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3949 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3950 && gdbarch_register_name (gdbarch
, regno
) != NULL
3951 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3952 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3953 gdbarch_register_name (gdbarch
, regno
));
3955 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3956 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3958 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3959 int i
, size
= register_size (gdbarch
, regno
);
3960 unsigned char buf
[MAX_REGISTER_SIZE
];
3962 regcache_raw_collect (regcache
, regno
, buf
);
3963 fprintf_unfiltered (gdb_stdlog
, " = ");
3964 for (i
= 0; i
< size
; i
++)
3966 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3968 if (size
<= sizeof (LONGEST
))
3970 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3972 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3973 core_addr_to_string_nz (val
), plongest (val
));
3976 fprintf_unfiltered (gdb_stdlog
, "\n");
3980 target_fetch_registers (struct regcache
*regcache
, int regno
)
3982 struct target_ops
*t
;
3984 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3986 if (t
->to_fetch_registers
!= NULL
)
3988 t
->to_fetch_registers (t
, regcache
, regno
);
3990 debug_print_register ("target_fetch_registers", regcache
, regno
);
3997 target_store_registers (struct regcache
*regcache
, int regno
)
3999 struct target_ops
*t
;
4001 if (!may_write_registers
)
4002 error (_("Writing to registers is not allowed (regno %d)"), regno
);
4004 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4006 if (t
->to_store_registers
!= NULL
)
4008 t
->to_store_registers (t
, regcache
, regno
);
4011 debug_print_register ("target_store_registers", regcache
, regno
);
4021 target_core_of_thread (ptid_t ptid
)
4023 struct target_ops
*t
;
4025 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4027 if (t
->to_core_of_thread
!= NULL
)
4029 int retval
= t
->to_core_of_thread (t
, ptid
);
4032 fprintf_unfiltered (gdb_stdlog
,
4033 "target_core_of_thread (%d) = %d\n",
4034 PIDGET (ptid
), retval
);
4043 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
4045 struct target_ops
*t
;
4047 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4049 if (t
->to_verify_memory
!= NULL
)
4051 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
4054 fprintf_unfiltered (gdb_stdlog
,
4055 "target_verify_memory (%s, %s) = %d\n",
4056 paddress (target_gdbarch (), memaddr
),
4066 /* The documentation for this function is in its prototype declaration in
4070 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4072 struct target_ops
*t
;
4074 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4075 if (t
->to_insert_mask_watchpoint
!= NULL
)
4079 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
4082 fprintf_unfiltered (gdb_stdlog
, "\
4083 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
4084 core_addr_to_string (addr
),
4085 core_addr_to_string (mask
), rw
, ret
);
4093 /* The documentation for this function is in its prototype declaration in
4097 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4099 struct target_ops
*t
;
4101 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4102 if (t
->to_remove_mask_watchpoint
!= NULL
)
4106 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
4109 fprintf_unfiltered (gdb_stdlog
, "\
4110 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
4111 core_addr_to_string (addr
),
4112 core_addr_to_string (mask
), rw
, ret
);
4120 /* The documentation for this function is in its prototype declaration
4124 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4126 struct target_ops
*t
;
4128 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4129 if (t
->to_masked_watch_num_registers
!= NULL
)
4130 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4135 /* The documentation for this function is in its prototype declaration
4139 target_ranged_break_num_registers (void)
4141 struct target_ops
*t
;
4143 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4144 if (t
->to_ranged_break_num_registers
!= NULL
)
4145 return t
->to_ranged_break_num_registers (t
);
4151 debug_to_prepare_to_store (struct regcache
*regcache
)
4153 debug_target
.to_prepare_to_store (regcache
);
4155 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4159 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4160 int write
, struct mem_attrib
*attrib
,
4161 struct target_ops
*target
)
4165 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4168 fprintf_unfiltered (gdb_stdlog
,
4169 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4170 paddress (target_gdbarch (), memaddr
), len
,
4171 write
? "write" : "read", retval
);
4177 fputs_unfiltered (", bytes =", gdb_stdlog
);
4178 for (i
= 0; i
< retval
; i
++)
4180 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4182 if (targetdebug
< 2 && i
> 0)
4184 fprintf_unfiltered (gdb_stdlog
, " ...");
4187 fprintf_unfiltered (gdb_stdlog
, "\n");
4190 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4194 fputc_unfiltered ('\n', gdb_stdlog
);
4200 debug_to_files_info (struct target_ops
*target
)
4202 debug_target
.to_files_info (target
);
4204 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4208 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
4209 struct bp_target_info
*bp_tgt
)
4213 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
4215 fprintf_unfiltered (gdb_stdlog
,
4216 "target_insert_breakpoint (%s, xxx) = %ld\n",
4217 core_addr_to_string (bp_tgt
->placed_address
),
4218 (unsigned long) retval
);
4223 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
4224 struct bp_target_info
*bp_tgt
)
4228 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
4230 fprintf_unfiltered (gdb_stdlog
,
4231 "target_remove_breakpoint (%s, xxx) = %ld\n",
4232 core_addr_to_string (bp_tgt
->placed_address
),
4233 (unsigned long) retval
);
4238 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
4242 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
4244 fprintf_unfiltered (gdb_stdlog
,
4245 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4246 (unsigned long) type
,
4247 (unsigned long) cnt
,
4248 (unsigned long) from_tty
,
4249 (unsigned long) retval
);
4254 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
4258 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
4260 fprintf_unfiltered (gdb_stdlog
,
4261 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4262 core_addr_to_string (addr
), (unsigned long) len
,
4263 core_addr_to_string (retval
));
4268 debug_to_can_accel_watchpoint_condition (CORE_ADDR addr
, int len
, int rw
,
4269 struct expression
*cond
)
4273 retval
= debug_target
.to_can_accel_watchpoint_condition (addr
, len
,
4276 fprintf_unfiltered (gdb_stdlog
,
4277 "target_can_accel_watchpoint_condition "
4278 "(%s, %d, %d, %s) = %ld\n",
4279 core_addr_to_string (addr
), len
, rw
,
4280 host_address_to_string (cond
), (unsigned long) retval
);
4285 debug_to_stopped_by_watchpoint (void)
4289 retval
= debug_target
.to_stopped_by_watchpoint ();
4291 fprintf_unfiltered (gdb_stdlog
,
4292 "target_stopped_by_watchpoint () = %ld\n",
4293 (unsigned long) retval
);
4298 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4302 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4304 fprintf_unfiltered (gdb_stdlog
,
4305 "target_stopped_data_address ([%s]) = %ld\n",
4306 core_addr_to_string (*addr
),
4307 (unsigned long)retval
);
4312 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4314 CORE_ADDR start
, int length
)
4318 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4321 fprintf_filtered (gdb_stdlog
,
4322 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4323 core_addr_to_string (addr
), core_addr_to_string (start
),
4329 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
4330 struct bp_target_info
*bp_tgt
)
4334 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
4336 fprintf_unfiltered (gdb_stdlog
,
4337 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4338 core_addr_to_string (bp_tgt
->placed_address
),
4339 (unsigned long) retval
);
4344 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
4345 struct bp_target_info
*bp_tgt
)
4349 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
4351 fprintf_unfiltered (gdb_stdlog
,
4352 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4353 core_addr_to_string (bp_tgt
->placed_address
),
4354 (unsigned long) retval
);
4359 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
4360 struct expression
*cond
)
4364 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
, cond
);
4366 fprintf_unfiltered (gdb_stdlog
,
4367 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4368 core_addr_to_string (addr
), len
, type
,
4369 host_address_to_string (cond
), (unsigned long) retval
);
4374 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
4375 struct expression
*cond
)
4379 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
, cond
);
4381 fprintf_unfiltered (gdb_stdlog
,
4382 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4383 core_addr_to_string (addr
), len
, type
,
4384 host_address_to_string (cond
), (unsigned long) retval
);
4389 debug_to_terminal_init (void)
4391 debug_target
.to_terminal_init ();
4393 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4397 debug_to_terminal_inferior (void)
4399 debug_target
.to_terminal_inferior ();
4401 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4405 debug_to_terminal_ours_for_output (void)
4407 debug_target
.to_terminal_ours_for_output ();
4409 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4413 debug_to_terminal_ours (void)
4415 debug_target
.to_terminal_ours ();
4417 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4421 debug_to_terminal_save_ours (void)
4423 debug_target
.to_terminal_save_ours ();
4425 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4429 debug_to_terminal_info (char *arg
, int from_tty
)
4431 debug_target
.to_terminal_info (arg
, from_tty
);
4433 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4438 debug_to_load (char *args
, int from_tty
)
4440 debug_target
.to_load (args
, from_tty
);
4442 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4446 debug_to_post_startup_inferior (ptid_t ptid
)
4448 debug_target
.to_post_startup_inferior (ptid
);
4450 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4455 debug_to_insert_fork_catchpoint (int pid
)
4459 retval
= debug_target
.to_insert_fork_catchpoint (pid
);
4461 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4468 debug_to_remove_fork_catchpoint (int pid
)
4472 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
4474 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4481 debug_to_insert_vfork_catchpoint (int pid
)
4485 retval
= debug_target
.to_insert_vfork_catchpoint (pid
);
4487 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4494 debug_to_remove_vfork_catchpoint (int pid
)
4498 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
4500 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4507 debug_to_insert_exec_catchpoint (int pid
)
4511 retval
= debug_target
.to_insert_exec_catchpoint (pid
);
4513 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4520 debug_to_remove_exec_catchpoint (int pid
)
4524 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
4526 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4533 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
4537 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
4539 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4540 pid
, wait_status
, *exit_status
, has_exited
);
4546 debug_to_can_run (void)
4550 retval
= debug_target
.to_can_run ();
4552 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4557 static struct gdbarch
*
4558 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4560 struct gdbarch
*retval
;
4562 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4564 fprintf_unfiltered (gdb_stdlog
,
4565 "target_thread_architecture (%s) = %s [%s]\n",
4566 target_pid_to_str (ptid
),
4567 host_address_to_string (retval
),
4568 gdbarch_bfd_arch_info (retval
)->printable_name
);
4573 debug_to_stop (ptid_t ptid
)
4575 debug_target
.to_stop (ptid
);
4577 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4578 target_pid_to_str (ptid
));
4582 debug_to_rcmd (char *command
,
4583 struct ui_file
*outbuf
)
4585 debug_target
.to_rcmd (command
, outbuf
);
4586 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4590 debug_to_pid_to_exec_file (int pid
)
4594 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
4596 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4603 setup_target_debug (void)
4605 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4607 current_target
.to_open
= debug_to_open
;
4608 current_target
.to_post_attach
= debug_to_post_attach
;
4609 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4610 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4611 current_target
.to_files_info
= debug_to_files_info
;
4612 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4613 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4614 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4615 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4616 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4617 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4618 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4619 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4620 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4621 current_target
.to_watchpoint_addr_within_range
4622 = debug_to_watchpoint_addr_within_range
;
4623 current_target
.to_region_ok_for_hw_watchpoint
4624 = debug_to_region_ok_for_hw_watchpoint
;
4625 current_target
.to_can_accel_watchpoint_condition
4626 = debug_to_can_accel_watchpoint_condition
;
4627 current_target
.to_terminal_init
= debug_to_terminal_init
;
4628 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4629 current_target
.to_terminal_ours_for_output
4630 = debug_to_terminal_ours_for_output
;
4631 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4632 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4633 current_target
.to_terminal_info
= debug_to_terminal_info
;
4634 current_target
.to_load
= debug_to_load
;
4635 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4636 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4637 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4638 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4639 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4640 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4641 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4642 current_target
.to_has_exited
= debug_to_has_exited
;
4643 current_target
.to_can_run
= debug_to_can_run
;
4644 current_target
.to_stop
= debug_to_stop
;
4645 current_target
.to_rcmd
= debug_to_rcmd
;
4646 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4647 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4651 static char targ_desc
[] =
4652 "Names of targets and files being debugged.\nShows the entire \
4653 stack of targets currently in use (including the exec-file,\n\
4654 core-file, and process, if any), as well as the symbol file name.";
4657 do_monitor_command (char *cmd
,
4660 if ((current_target
.to_rcmd
4661 == (void (*) (char *, struct ui_file
*)) tcomplain
)
4662 || (current_target
.to_rcmd
== debug_to_rcmd
4663 && (debug_target
.to_rcmd
4664 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
4665 error (_("\"monitor\" command not supported by this target."));
4666 target_rcmd (cmd
, gdb_stdtarg
);
4669 /* Print the name of each layers of our target stack. */
4672 maintenance_print_target_stack (char *cmd
, int from_tty
)
4674 struct target_ops
*t
;
4676 printf_filtered (_("The current target stack is:\n"));
4678 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4680 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4684 /* Controls if async mode is permitted. */
4685 int target_async_permitted
= 0;
4687 /* The set command writes to this variable. If the inferior is
4688 executing, linux_nat_async_permitted is *not* updated. */
4689 static int target_async_permitted_1
= 0;
4692 set_target_async_command (char *args
, int from_tty
,
4693 struct cmd_list_element
*c
)
4695 if (have_live_inferiors ())
4697 target_async_permitted_1
= target_async_permitted
;
4698 error (_("Cannot change this setting while the inferior is running."));
4701 target_async_permitted
= target_async_permitted_1
;
4705 show_target_async_command (struct ui_file
*file
, int from_tty
,
4706 struct cmd_list_element
*c
,
4709 fprintf_filtered (file
,
4710 _("Controlling the inferior in "
4711 "asynchronous mode is %s.\n"), value
);
4714 /* Temporary copies of permission settings. */
4716 static int may_write_registers_1
= 1;
4717 static int may_write_memory_1
= 1;
4718 static int may_insert_breakpoints_1
= 1;
4719 static int may_insert_tracepoints_1
= 1;
4720 static int may_insert_fast_tracepoints_1
= 1;
4721 static int may_stop_1
= 1;
4723 /* Make the user-set values match the real values again. */
4726 update_target_permissions (void)
4728 may_write_registers_1
= may_write_registers
;
4729 may_write_memory_1
= may_write_memory
;
4730 may_insert_breakpoints_1
= may_insert_breakpoints
;
4731 may_insert_tracepoints_1
= may_insert_tracepoints
;
4732 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4733 may_stop_1
= may_stop
;
4736 /* The one function handles (most of) the permission flags in the same
4740 set_target_permissions (char *args
, int from_tty
,
4741 struct cmd_list_element
*c
)
4743 if (target_has_execution
)
4745 update_target_permissions ();
4746 error (_("Cannot change this setting while the inferior is running."));
4749 /* Make the real values match the user-changed values. */
4750 may_write_registers
= may_write_registers_1
;
4751 may_insert_breakpoints
= may_insert_breakpoints_1
;
4752 may_insert_tracepoints
= may_insert_tracepoints_1
;
4753 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4754 may_stop
= may_stop_1
;
4755 update_observer_mode ();
4758 /* Set memory write permission independently of observer mode. */
4761 set_write_memory_permission (char *args
, int from_tty
,
4762 struct cmd_list_element
*c
)
4764 /* Make the real values match the user-changed values. */
4765 may_write_memory
= may_write_memory_1
;
4766 update_observer_mode ();
4771 initialize_targets (void)
4773 init_dummy_target ();
4774 push_target (&dummy_target
);
4776 add_info ("target", target_info
, targ_desc
);
4777 add_info ("files", target_info
, targ_desc
);
4779 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
4780 Set target debugging."), _("\
4781 Show target debugging."), _("\
4782 When non-zero, target debugging is enabled. Higher numbers are more\n\
4783 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4787 &setdebuglist
, &showdebuglist
);
4789 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
4790 &trust_readonly
, _("\
4791 Set mode for reading from readonly sections."), _("\
4792 Show mode for reading from readonly sections."), _("\
4793 When this mode is on, memory reads from readonly sections (such as .text)\n\
4794 will be read from the object file instead of from the target. This will\n\
4795 result in significant performance improvement for remote targets."),
4797 show_trust_readonly
,
4798 &setlist
, &showlist
);
4800 add_com ("monitor", class_obscure
, do_monitor_command
,
4801 _("Send a command to the remote monitor (remote targets only)."));
4803 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
4804 _("Print the name of each layer of the internal target stack."),
4805 &maintenanceprintlist
);
4807 add_setshow_boolean_cmd ("target-async", no_class
,
4808 &target_async_permitted_1
, _("\
4809 Set whether gdb controls the inferior in asynchronous mode."), _("\
4810 Show whether gdb controls the inferior in asynchronous mode."), _("\
4811 Tells gdb whether to control the inferior in asynchronous mode."),
4812 set_target_async_command
,
4813 show_target_async_command
,
4817 add_setshow_boolean_cmd ("stack-cache", class_support
,
4818 &stack_cache_enabled_p_1
, _("\
4819 Set cache use for stack access."), _("\
4820 Show cache use for stack access."), _("\
4821 When on, use the data cache for all stack access, regardless of any\n\
4822 configured memory regions. This improves remote performance significantly.\n\
4823 By default, caching for stack access is on."),
4824 set_stack_cache_enabled_p
,
4825 show_stack_cache_enabled_p
,
4826 &setlist
, &showlist
);
4828 add_setshow_boolean_cmd ("may-write-registers", class_support
,
4829 &may_write_registers_1
, _("\
4830 Set permission to write into registers."), _("\
4831 Show permission to write into registers."), _("\
4832 When this permission is on, GDB may write into the target's registers.\n\
4833 Otherwise, any sort of write attempt will result in an error."),
4834 set_target_permissions
, NULL
,
4835 &setlist
, &showlist
);
4837 add_setshow_boolean_cmd ("may-write-memory", class_support
,
4838 &may_write_memory_1
, _("\
4839 Set permission to write into target memory."), _("\
4840 Show permission to write into target memory."), _("\
4841 When this permission is on, GDB may write into the target's memory.\n\
4842 Otherwise, any sort of write attempt will result in an error."),
4843 set_write_memory_permission
, NULL
,
4844 &setlist
, &showlist
);
4846 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
4847 &may_insert_breakpoints_1
, _("\
4848 Set permission to insert breakpoints in the target."), _("\
4849 Show permission to insert breakpoints in the target."), _("\
4850 When this permission is on, GDB may insert breakpoints in the program.\n\
4851 Otherwise, any sort of insertion attempt will result in an error."),
4852 set_target_permissions
, NULL
,
4853 &setlist
, &showlist
);
4855 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
4856 &may_insert_tracepoints_1
, _("\
4857 Set permission to insert tracepoints in the target."), _("\
4858 Show permission to insert tracepoints in the target."), _("\
4859 When this permission is on, GDB may insert tracepoints in the program.\n\
4860 Otherwise, any sort of insertion attempt will result in an error."),
4861 set_target_permissions
, NULL
,
4862 &setlist
, &showlist
);
4864 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
4865 &may_insert_fast_tracepoints_1
, _("\
4866 Set permission to insert fast tracepoints in the target."), _("\
4867 Show permission to insert fast tracepoints in the target."), _("\
4868 When this permission is on, GDB may insert fast tracepoints.\n\
4869 Otherwise, any sort of insertion attempt will result in an error."),
4870 set_target_permissions
, NULL
,
4871 &setlist
, &showlist
);
4873 add_setshow_boolean_cmd ("may-interrupt", class_support
,
4875 Set permission to interrupt or signal the target."), _("\
4876 Show permission to interrupt or signal the target."), _("\
4877 When this permission is on, GDB may interrupt/stop the target's execution.\n\
4878 Otherwise, any attempt to interrupt or stop will be ignored."),
4879 set_target_permissions
, NULL
,
4880 &setlist
, &showlist
);
4883 target_dcache
= dcache_init ();