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_buffer_size
, t
);
697 INHERIT (to_set_trace_notes
, t
);
698 INHERIT (to_get_tib_address
, t
);
699 INHERIT (to_set_permissions
, t
);
700 INHERIT (to_static_tracepoint_marker_at
, t
);
701 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
702 INHERIT (to_traceframe_info
, t
);
703 INHERIT (to_use_agent
, t
);
704 INHERIT (to_can_use_agent
, t
);
705 INHERIT (to_magic
, t
);
706 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
707 INHERIT (to_can_run_breakpoint_commands
, t
);
708 /* Do not inherit to_memory_map. */
709 /* Do not inherit to_flash_erase. */
710 /* Do not inherit to_flash_done. */
714 /* Clean up a target struct so it no longer has any zero pointers in
715 it. Some entries are defaulted to a method that print an error,
716 others are hard-wired to a standard recursive default. */
718 #define de_fault(field, value) \
719 if (!current_target.field) \
720 current_target.field = value
723 (void (*) (char *, int))
728 de_fault (to_post_attach
,
731 de_fault (to_prepare_to_store
,
732 (void (*) (struct regcache
*))
734 de_fault (deprecated_xfer_memory
,
735 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
736 struct mem_attrib
*, struct target_ops
*))
738 de_fault (to_files_info
,
739 (void (*) (struct target_ops
*))
741 de_fault (to_insert_breakpoint
,
742 memory_insert_breakpoint
);
743 de_fault (to_remove_breakpoint
,
744 memory_remove_breakpoint
);
745 de_fault (to_can_use_hw_breakpoint
,
746 (int (*) (int, int, int))
748 de_fault (to_insert_hw_breakpoint
,
749 (int (*) (struct gdbarch
*, struct bp_target_info
*))
751 de_fault (to_remove_hw_breakpoint
,
752 (int (*) (struct gdbarch
*, struct bp_target_info
*))
754 de_fault (to_insert_watchpoint
,
755 (int (*) (CORE_ADDR
, int, int, struct expression
*))
757 de_fault (to_remove_watchpoint
,
758 (int (*) (CORE_ADDR
, int, int, struct expression
*))
760 de_fault (to_stopped_by_watchpoint
,
763 de_fault (to_stopped_data_address
,
764 (int (*) (struct target_ops
*, CORE_ADDR
*))
766 de_fault (to_watchpoint_addr_within_range
,
767 default_watchpoint_addr_within_range
);
768 de_fault (to_region_ok_for_hw_watchpoint
,
769 default_region_ok_for_hw_watchpoint
);
770 de_fault (to_can_accel_watchpoint_condition
,
771 (int (*) (CORE_ADDR
, int, int, struct expression
*))
773 de_fault (to_terminal_init
,
776 de_fault (to_terminal_inferior
,
779 de_fault (to_terminal_ours_for_output
,
782 de_fault (to_terminal_ours
,
785 de_fault (to_terminal_save_ours
,
788 de_fault (to_terminal_info
,
789 default_terminal_info
);
791 (void (*) (char *, int))
793 de_fault (to_post_startup_inferior
,
796 de_fault (to_insert_fork_catchpoint
,
799 de_fault (to_remove_fork_catchpoint
,
802 de_fault (to_insert_vfork_catchpoint
,
805 de_fault (to_remove_vfork_catchpoint
,
808 de_fault (to_insert_exec_catchpoint
,
811 de_fault (to_remove_exec_catchpoint
,
814 de_fault (to_set_syscall_catchpoint
,
815 (int (*) (int, int, int, int, int *))
817 de_fault (to_has_exited
,
818 (int (*) (int, int, int *))
820 de_fault (to_can_run
,
822 de_fault (to_extra_thread_info
,
823 (char *(*) (struct thread_info
*))
825 de_fault (to_thread_name
,
826 (char *(*) (struct thread_info
*))
831 current_target
.to_xfer_partial
= current_xfer_partial
;
833 (void (*) (char *, struct ui_file
*))
835 de_fault (to_pid_to_exec_file
,
839 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
841 de_fault (to_thread_architecture
,
842 default_thread_architecture
);
843 current_target
.to_read_description
= NULL
;
844 de_fault (to_get_ada_task_ptid
,
845 (ptid_t (*) (long, long))
846 default_get_ada_task_ptid
);
847 de_fault (to_supports_multi_process
,
850 de_fault (to_supports_enable_disable_tracepoint
,
853 de_fault (to_supports_string_tracing
,
856 de_fault (to_trace_init
,
859 de_fault (to_download_tracepoint
,
860 (void (*) (struct bp_location
*))
862 de_fault (to_can_download_tracepoint
,
865 de_fault (to_download_trace_state_variable
,
866 (void (*) (struct trace_state_variable
*))
868 de_fault (to_enable_tracepoint
,
869 (void (*) (struct bp_location
*))
871 de_fault (to_disable_tracepoint
,
872 (void (*) (struct bp_location
*))
874 de_fault (to_trace_set_readonly_regions
,
877 de_fault (to_trace_start
,
880 de_fault (to_get_trace_status
,
881 (int (*) (struct trace_status
*))
883 de_fault (to_get_tracepoint_status
,
884 (void (*) (struct breakpoint
*, struct uploaded_tp
*))
886 de_fault (to_trace_stop
,
889 de_fault (to_trace_find
,
890 (int (*) (enum trace_find_type
, int, ULONGEST
, ULONGEST
, int *))
892 de_fault (to_get_trace_state_variable_value
,
893 (int (*) (int, LONGEST
*))
895 de_fault (to_save_trace_data
,
896 (int (*) (const char *))
898 de_fault (to_upload_tracepoints
,
899 (int (*) (struct uploaded_tp
**))
901 de_fault (to_upload_trace_state_variables
,
902 (int (*) (struct uploaded_tsv
**))
904 de_fault (to_get_raw_trace_data
,
905 (LONGEST (*) (gdb_byte
*, ULONGEST
, LONGEST
))
907 de_fault (to_get_min_fast_tracepoint_insn_len
,
910 de_fault (to_set_disconnected_tracing
,
913 de_fault (to_set_circular_trace_buffer
,
916 de_fault (to_set_trace_buffer_size
,
919 de_fault (to_set_trace_notes
,
920 (int (*) (char *, char *, char *))
922 de_fault (to_get_tib_address
,
923 (int (*) (ptid_t
, CORE_ADDR
*))
925 de_fault (to_set_permissions
,
928 de_fault (to_static_tracepoint_marker_at
,
929 (int (*) (CORE_ADDR
, struct static_tracepoint_marker
*))
931 de_fault (to_static_tracepoint_markers_by_strid
,
932 (VEC(static_tracepoint_marker_p
) * (*) (const char *))
934 de_fault (to_traceframe_info
,
935 (struct traceframe_info
* (*) (void))
937 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
940 de_fault (to_can_run_breakpoint_commands
,
943 de_fault (to_use_agent
,
946 de_fault (to_can_use_agent
,
949 de_fault (to_execution_direction
, default_execution_direction
);
953 /* Finally, position the target-stack beneath the squashed
954 "current_target". That way code looking for a non-inherited
955 target method can quickly and simply find it. */
956 current_target
.beneath
= target_stack
;
959 setup_target_debug ();
962 /* Push a new target type into the stack of the existing target accessors,
963 possibly superseding some of the existing accessors.
965 Rather than allow an empty stack, we always have the dummy target at
966 the bottom stratum, so we can call the function vectors without
970 push_target (struct target_ops
*t
)
972 struct target_ops
**cur
;
974 /* Check magic number. If wrong, it probably means someone changed
975 the struct definition, but not all the places that initialize one. */
976 if (t
->to_magic
!= OPS_MAGIC
)
978 fprintf_unfiltered (gdb_stderr
,
979 "Magic number of %s target struct wrong\n",
981 internal_error (__FILE__
, __LINE__
,
982 _("failed internal consistency check"));
985 /* Find the proper stratum to install this target in. */
986 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
988 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
992 /* If there's already targets at this stratum, remove them. */
993 /* FIXME: cagney/2003-10-15: I think this should be popping all
994 targets to CUR, and not just those at this stratum level. */
995 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
997 /* There's already something at this stratum level. Close it,
998 and un-hook it from the stack. */
999 struct target_ops
*tmp
= (*cur
);
1001 (*cur
) = (*cur
)->beneath
;
1002 tmp
->beneath
= NULL
;
1003 target_close (tmp
, 0);
1006 /* We have removed all targets in our stratum, now add the new one. */
1007 t
->beneath
= (*cur
);
1010 update_current_target ();
1013 /* Remove a target_ops vector from the stack, wherever it may be.
1014 Return how many times it was removed (0 or 1). */
1017 unpush_target (struct target_ops
*t
)
1019 struct target_ops
**cur
;
1020 struct target_ops
*tmp
;
1022 if (t
->to_stratum
== dummy_stratum
)
1023 internal_error (__FILE__
, __LINE__
,
1024 _("Attempt to unpush the dummy target"));
1026 /* Look for the specified target. Note that we assume that a target
1027 can only occur once in the target stack. */
1029 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1035 /* If we don't find target_ops, quit. Only open targets should be
1040 /* Unchain the target. */
1042 (*cur
) = (*cur
)->beneath
;
1043 tmp
->beneath
= NULL
;
1045 update_current_target ();
1047 /* Finally close the target. Note we do this after unchaining, so
1048 any target method calls from within the target_close
1049 implementation don't end up in T anymore. */
1050 target_close (t
, 0);
1058 target_close (target_stack
, 0); /* Let it clean up. */
1059 if (unpush_target (target_stack
) == 1)
1062 fprintf_unfiltered (gdb_stderr
,
1063 "pop_target couldn't find target %s\n",
1064 current_target
.to_shortname
);
1065 internal_error (__FILE__
, __LINE__
,
1066 _("failed internal consistency check"));
1070 pop_all_targets_above (enum strata above_stratum
, int quitting
)
1072 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
1074 target_close (target_stack
, quitting
);
1075 if (!unpush_target (target_stack
))
1077 fprintf_unfiltered (gdb_stderr
,
1078 "pop_all_targets couldn't find target %s\n",
1079 target_stack
->to_shortname
);
1080 internal_error (__FILE__
, __LINE__
,
1081 _("failed internal consistency check"));
1088 pop_all_targets (int quitting
)
1090 pop_all_targets_above (dummy_stratum
, quitting
);
1093 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
1096 target_is_pushed (struct target_ops
*t
)
1098 struct target_ops
**cur
;
1100 /* Check magic number. If wrong, it probably means someone changed
1101 the struct definition, but not all the places that initialize one. */
1102 if (t
->to_magic
!= OPS_MAGIC
)
1104 fprintf_unfiltered (gdb_stderr
,
1105 "Magic number of %s target struct wrong\n",
1107 internal_error (__FILE__
, __LINE__
,
1108 _("failed internal consistency check"));
1111 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1118 /* Using the objfile specified in OBJFILE, find the address for the
1119 current thread's thread-local storage with offset OFFSET. */
1121 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1123 volatile CORE_ADDR addr
= 0;
1124 struct target_ops
*target
;
1126 for (target
= current_target
.beneath
;
1128 target
= target
->beneath
)
1130 if (target
->to_get_thread_local_address
!= NULL
)
1135 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
1137 ptid_t ptid
= inferior_ptid
;
1138 volatile struct gdb_exception ex
;
1140 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1144 /* Fetch the load module address for this objfile. */
1145 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1147 /* If it's 0, throw the appropriate exception. */
1149 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1150 _("TLS load module not found"));
1152 addr
= target
->to_get_thread_local_address (target
, ptid
,
1155 /* If an error occurred, print TLS related messages here. Otherwise,
1156 throw the error to some higher catcher. */
1159 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1163 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1164 error (_("Cannot find thread-local variables "
1165 "in this thread library."));
1167 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1168 if (objfile_is_library
)
1169 error (_("Cannot find shared library `%s' in dynamic"
1170 " linker's load module list"), objfile
->name
);
1172 error (_("Cannot find executable file `%s' in dynamic"
1173 " linker's load module list"), objfile
->name
);
1175 case TLS_NOT_ALLOCATED_YET_ERROR
:
1176 if (objfile_is_library
)
1177 error (_("The inferior has not yet allocated storage for"
1178 " thread-local variables in\n"
1179 "the shared library `%s'\n"
1181 objfile
->name
, target_pid_to_str (ptid
));
1183 error (_("The inferior has not yet allocated storage for"
1184 " thread-local variables in\n"
1185 "the executable `%s'\n"
1187 objfile
->name
, target_pid_to_str (ptid
));
1189 case TLS_GENERIC_ERROR
:
1190 if (objfile_is_library
)
1191 error (_("Cannot find thread-local storage for %s, "
1192 "shared library %s:\n%s"),
1193 target_pid_to_str (ptid
),
1194 objfile
->name
, ex
.message
);
1196 error (_("Cannot find thread-local storage for %s, "
1197 "executable file %s:\n%s"),
1198 target_pid_to_str (ptid
),
1199 objfile
->name
, ex
.message
);
1202 throw_exception (ex
);
1207 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1208 TLS is an ABI-specific thing. But we don't do that yet. */
1210 error (_("Cannot find thread-local variables on this target"));
1216 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1218 /* target_read_string -- read a null terminated string, up to LEN bytes,
1219 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1220 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1221 is responsible for freeing it. Return the number of bytes successfully
1225 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1227 int tlen
, offset
, i
;
1231 int buffer_allocated
;
1233 unsigned int nbytes_read
= 0;
1235 gdb_assert (string
);
1237 /* Small for testing. */
1238 buffer_allocated
= 4;
1239 buffer
= xmalloc (buffer_allocated
);
1244 tlen
= MIN (len
, 4 - (memaddr
& 3));
1245 offset
= memaddr
& 3;
1247 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1250 /* The transfer request might have crossed the boundary to an
1251 unallocated region of memory. Retry the transfer, requesting
1255 errcode
= target_read_memory (memaddr
, buf
, 1);
1260 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1264 bytes
= bufptr
- buffer
;
1265 buffer_allocated
*= 2;
1266 buffer
= xrealloc (buffer
, buffer_allocated
);
1267 bufptr
= buffer
+ bytes
;
1270 for (i
= 0; i
< tlen
; i
++)
1272 *bufptr
++ = buf
[i
+ offset
];
1273 if (buf
[i
+ offset
] == '\000')
1275 nbytes_read
+= i
+ 1;
1282 nbytes_read
+= tlen
;
1291 struct target_section_table
*
1292 target_get_section_table (struct target_ops
*target
)
1294 struct target_ops
*t
;
1297 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1299 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1300 if (t
->to_get_section_table
!= NULL
)
1301 return (*t
->to_get_section_table
) (t
);
1306 /* Find a section containing ADDR. */
1308 struct target_section
*
1309 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1311 struct target_section_table
*table
= target_get_section_table (target
);
1312 struct target_section
*secp
;
1317 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1319 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1325 /* Read memory from the live target, even if currently inspecting a
1326 traceframe. The return is the same as that of target_read. */
1329 target_read_live_memory (enum target_object object
,
1330 ULONGEST memaddr
, gdb_byte
*myaddr
, LONGEST len
)
1333 struct cleanup
*cleanup
;
1335 /* Switch momentarily out of tfind mode so to access live memory.
1336 Note that this must not clear global state, such as the frame
1337 cache, which must still remain valid for the previous traceframe.
1338 We may be _building_ the frame cache at this point. */
1339 cleanup
= make_cleanup_restore_traceframe_number ();
1340 set_traceframe_number (-1);
1342 ret
= target_read (current_target
.beneath
, object
, NULL
,
1343 myaddr
, memaddr
, len
);
1345 do_cleanups (cleanup
);
1349 /* Using the set of read-only target sections of OPS, read live
1350 read-only memory. Note that the actual reads start from the
1351 top-most target again.
1353 For interface/parameters/return description see target.h,
1357 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1358 enum target_object object
,
1359 gdb_byte
*readbuf
, ULONGEST memaddr
,
1362 struct target_section
*secp
;
1363 struct target_section_table
*table
;
1365 secp
= target_section_by_addr (ops
, memaddr
);
1367 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1370 struct target_section
*p
;
1371 ULONGEST memend
= memaddr
+ len
;
1373 table
= target_get_section_table (ops
);
1375 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1377 if (memaddr
>= p
->addr
)
1379 if (memend
<= p
->endaddr
)
1381 /* Entire transfer is within this section. */
1382 return target_read_live_memory (object
, memaddr
,
1385 else if (memaddr
>= p
->endaddr
)
1387 /* This section ends before the transfer starts. */
1392 /* This section overlaps the transfer. Just do half. */
1393 len
= p
->endaddr
- memaddr
;
1394 return target_read_live_memory (object
, memaddr
,
1404 /* Perform a partial memory transfer.
1405 For docs see target.h, to_xfer_partial. */
1408 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1409 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1414 struct mem_region
*region
;
1415 struct inferior
*inf
;
1417 /* For accesses to unmapped overlay sections, read directly from
1418 files. Must do this first, as MEMADDR may need adjustment. */
1419 if (readbuf
!= NULL
&& overlay_debugging
)
1421 struct obj_section
*section
= find_pc_overlay (memaddr
);
1423 if (pc_in_unmapped_range (memaddr
, section
))
1425 struct target_section_table
*table
1426 = target_get_section_table (ops
);
1427 const char *section_name
= section
->the_bfd_section
->name
;
1429 memaddr
= overlay_mapped_address (memaddr
, section
);
1430 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1433 table
->sections_end
,
1438 /* Try the executable files, if "trust-readonly-sections" is set. */
1439 if (readbuf
!= NULL
&& trust_readonly
)
1441 struct target_section
*secp
;
1442 struct target_section_table
*table
;
1444 secp
= target_section_by_addr (ops
, memaddr
);
1446 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1449 table
= target_get_section_table (ops
);
1450 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1453 table
->sections_end
,
1458 /* If reading unavailable memory in the context of traceframes, and
1459 this address falls within a read-only section, fallback to
1460 reading from live memory. */
1461 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1463 VEC(mem_range_s
) *available
;
1465 /* If we fail to get the set of available memory, then the
1466 target does not support querying traceframe info, and so we
1467 attempt reading from the traceframe anyway (assuming the
1468 target implements the old QTro packet then). */
1469 if (traceframe_available_memory (&available
, memaddr
, len
))
1471 struct cleanup
*old_chain
;
1473 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1475 if (VEC_empty (mem_range_s
, available
)
1476 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1478 /* Don't read into the traceframe's available
1480 if (!VEC_empty (mem_range_s
, available
))
1482 LONGEST oldlen
= len
;
1484 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1485 gdb_assert (len
<= oldlen
);
1488 do_cleanups (old_chain
);
1490 /* This goes through the topmost target again. */
1491 res
= memory_xfer_live_readonly_partial (ops
, object
,
1492 readbuf
, memaddr
, len
);
1496 /* No use trying further, we know some memory starting
1497 at MEMADDR isn't available. */
1501 /* Don't try to read more than how much is available, in
1502 case the target implements the deprecated QTro packet to
1503 cater for older GDBs (the target's knowledge of read-only
1504 sections may be outdated by now). */
1505 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1507 do_cleanups (old_chain
);
1511 /* Try GDB's internal data cache. */
1512 region
= lookup_mem_region (memaddr
);
1513 /* region->hi == 0 means there's no upper bound. */
1514 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1517 reg_len
= region
->hi
- memaddr
;
1519 switch (region
->attrib
.mode
)
1522 if (writebuf
!= NULL
)
1527 if (readbuf
!= NULL
)
1532 /* We only support writing to flash during "load" for now. */
1533 if (writebuf
!= NULL
)
1534 error (_("Writing to flash memory forbidden in this context"));
1541 if (!ptid_equal (inferior_ptid
, null_ptid
))
1542 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1547 /* The dcache reads whole cache lines; that doesn't play well
1548 with reading from a trace buffer, because reading outside of
1549 the collected memory range fails. */
1550 && get_traceframe_number () == -1
1551 && (region
->attrib
.cache
1552 || (stack_cache_enabled_p
&& object
== TARGET_OBJECT_STACK_MEMORY
)))
1554 if (readbuf
!= NULL
)
1555 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
, readbuf
,
1558 /* FIXME drow/2006-08-09: If we're going to preserve const
1559 correctness dcache_xfer_memory should take readbuf and
1561 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
,
1570 /* If none of those methods found the memory we wanted, fall back
1571 to a target partial transfer. Normally a single call to
1572 to_xfer_partial is enough; if it doesn't recognize an object
1573 it will call the to_xfer_partial of the next target down.
1574 But for memory this won't do. Memory is the only target
1575 object which can be read from more than one valid target.
1576 A core file, for instance, could have some of memory but
1577 delegate other bits to the target below it. So, we must
1578 manually try all targets. */
1582 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1583 readbuf
, writebuf
, memaddr
, reg_len
);
1587 /* We want to continue past core files to executables, but not
1588 past a running target's memory. */
1589 if (ops
->to_has_all_memory (ops
))
1594 while (ops
!= NULL
);
1596 /* Make sure the cache gets updated no matter what - if we are writing
1597 to the stack. Even if this write is not tagged as such, we still need
1598 to update the cache. */
1603 && !region
->attrib
.cache
1604 && stack_cache_enabled_p
1605 && object
!= TARGET_OBJECT_STACK_MEMORY
)
1607 dcache_update (target_dcache
, memaddr
, (void *) writebuf
, res
);
1610 /* If we still haven't got anything, return the last error. We
1615 /* Perform a partial memory transfer. For docs see target.h,
1619 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1620 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1625 /* Zero length requests are ok and require no work. */
1629 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1630 breakpoint insns, thus hiding out from higher layers whether
1631 there are software breakpoints inserted in the code stream. */
1632 if (readbuf
!= NULL
)
1634 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
);
1636 if (res
> 0 && !show_memory_breakpoints
)
1637 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1642 struct cleanup
*old_chain
;
1644 buf
= xmalloc (len
);
1645 old_chain
= make_cleanup (xfree
, buf
);
1646 memcpy (buf
, writebuf
, len
);
1648 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1649 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
);
1651 do_cleanups (old_chain
);
1658 restore_show_memory_breakpoints (void *arg
)
1660 show_memory_breakpoints
= (uintptr_t) arg
;
1664 make_show_memory_breakpoints_cleanup (int show
)
1666 int current
= show_memory_breakpoints
;
1668 show_memory_breakpoints
= show
;
1669 return make_cleanup (restore_show_memory_breakpoints
,
1670 (void *) (uintptr_t) current
);
1673 /* For docs see target.h, to_xfer_partial. */
1676 target_xfer_partial (struct target_ops
*ops
,
1677 enum target_object object
, const char *annex
,
1678 void *readbuf
, const void *writebuf
,
1679 ULONGEST offset
, LONGEST len
)
1683 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1685 if (writebuf
&& !may_write_memory
)
1686 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1687 core_addr_to_string_nz (offset
), plongest (len
));
1689 /* If this is a memory transfer, let the memory-specific code
1690 have a look at it instead. Memory transfers are more
1692 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
)
1693 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1694 writebuf
, offset
, len
);
1697 enum target_object raw_object
= object
;
1699 /* If this is a raw memory transfer, request the normal
1700 memory object from other layers. */
1701 if (raw_object
== TARGET_OBJECT_RAW_MEMORY
)
1702 raw_object
= TARGET_OBJECT_MEMORY
;
1704 retval
= ops
->to_xfer_partial (ops
, raw_object
, annex
, readbuf
,
1705 writebuf
, offset
, len
);
1710 const unsigned char *myaddr
= NULL
;
1712 fprintf_unfiltered (gdb_stdlog
,
1713 "%s:target_xfer_partial "
1714 "(%d, %s, %s, %s, %s, %s) = %s",
1717 (annex
? annex
: "(null)"),
1718 host_address_to_string (readbuf
),
1719 host_address_to_string (writebuf
),
1720 core_addr_to_string_nz (offset
),
1721 plongest (len
), plongest (retval
));
1727 if (retval
> 0 && myaddr
!= NULL
)
1731 fputs_unfiltered (", bytes =", gdb_stdlog
);
1732 for (i
= 0; i
< retval
; i
++)
1734 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1736 if (targetdebug
< 2 && i
> 0)
1738 fprintf_unfiltered (gdb_stdlog
, " ...");
1741 fprintf_unfiltered (gdb_stdlog
, "\n");
1744 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1748 fputc_unfiltered ('\n', gdb_stdlog
);
1753 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
1754 GDB's memory at MYADDR. Returns either 0 for success or an errno value
1755 if any error occurs.
1757 If an error occurs, no guarantee is made about the contents of the data at
1758 MYADDR. In particular, the caller should not depend upon partial reads
1759 filling the buffer with good data. There is no way for the caller to know
1760 how much good data might have been transfered anyway. Callers that can
1761 deal with partial reads should call target_read (which will retry until
1762 it makes no progress, and then return how much was transferred). */
1765 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1767 /* Dispatch to the topmost target, not the flattened current_target.
1768 Memory accesses check target->to_has_(all_)memory, and the
1769 flattened target doesn't inherit those. */
1770 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1771 myaddr
, memaddr
, len
) == len
)
1777 /* Like target_read_memory, but specify explicitly that this is a read from
1778 the target's stack. This may trigger different cache behavior. */
1781 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1783 /* Dispatch to the topmost target, not the flattened current_target.
1784 Memory accesses check target->to_has_(all_)memory, and the
1785 flattened target doesn't inherit those. */
1787 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1788 myaddr
, memaddr
, len
) == len
)
1794 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1795 Returns either 0 for success or an errno value if any error occurs.
1796 If an error occurs, no guarantee is made about how much data got written.
1797 Callers that can deal with partial writes should call target_write. */
1800 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1802 /* Dispatch to the topmost target, not the flattened current_target.
1803 Memory accesses check target->to_has_(all_)memory, and the
1804 flattened target doesn't inherit those. */
1805 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1806 myaddr
, memaddr
, len
) == len
)
1812 /* Write LEN bytes from MYADDR to target raw memory at address
1813 MEMADDR. Returns either 0 for success or an errno value if any
1814 error occurs. If an error occurs, no guarantee is made about how
1815 much data got written. Callers that can deal with partial writes
1816 should call target_write. */
1819 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1821 /* Dispatch to the topmost target, not the flattened current_target.
1822 Memory accesses check target->to_has_(all_)memory, and the
1823 flattened target doesn't inherit those. */
1824 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1825 myaddr
, memaddr
, len
) == len
)
1831 /* Fetch the target's memory map. */
1834 target_memory_map (void)
1836 VEC(mem_region_s
) *result
;
1837 struct mem_region
*last_one
, *this_one
;
1839 struct target_ops
*t
;
1842 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1844 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1845 if (t
->to_memory_map
!= NULL
)
1851 result
= t
->to_memory_map (t
);
1855 qsort (VEC_address (mem_region_s
, result
),
1856 VEC_length (mem_region_s
, result
),
1857 sizeof (struct mem_region
), mem_region_cmp
);
1859 /* Check that regions do not overlap. Simultaneously assign
1860 a numbering for the "mem" commands to use to refer to
1863 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1865 this_one
->number
= ix
;
1867 if (last_one
&& last_one
->hi
> this_one
->lo
)
1869 warning (_("Overlapping regions in memory map: ignoring"));
1870 VEC_free (mem_region_s
, result
);
1873 last_one
= this_one
;
1880 target_flash_erase (ULONGEST address
, LONGEST length
)
1882 struct target_ops
*t
;
1884 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1885 if (t
->to_flash_erase
!= NULL
)
1888 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1889 hex_string (address
), phex (length
, 0));
1890 t
->to_flash_erase (t
, address
, length
);
1898 target_flash_done (void)
1900 struct target_ops
*t
;
1902 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1903 if (t
->to_flash_done
!= NULL
)
1906 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1907 t
->to_flash_done (t
);
1915 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1916 struct cmd_list_element
*c
, const char *value
)
1918 fprintf_filtered (file
,
1919 _("Mode for reading from readonly sections is %s.\n"),
1923 /* More generic transfers. */
1926 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1927 const char *annex
, gdb_byte
*readbuf
,
1928 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1930 if (object
== TARGET_OBJECT_MEMORY
1931 && ops
->deprecated_xfer_memory
!= NULL
)
1932 /* If available, fall back to the target's
1933 "deprecated_xfer_memory" method. */
1938 if (writebuf
!= NULL
)
1940 void *buffer
= xmalloc (len
);
1941 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1943 memcpy (buffer
, writebuf
, len
);
1944 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1945 1/*write*/, NULL
, ops
);
1946 do_cleanups (cleanup
);
1948 if (readbuf
!= NULL
)
1949 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1950 0/*read*/, NULL
, ops
);
1953 else if (xfered
== 0 && errno
== 0)
1954 /* "deprecated_xfer_memory" uses 0, cross checked against
1955 ERRNO as one indication of an error. */
1960 else if (ops
->beneath
!= NULL
)
1961 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1962 readbuf
, writebuf
, offset
, len
);
1967 /* The xfer_partial handler for the topmost target. Unlike the default,
1968 it does not need to handle memory specially; it just passes all
1969 requests down the stack. */
1972 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1973 const char *annex
, gdb_byte
*readbuf
,
1974 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1976 if (ops
->beneath
!= NULL
)
1977 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1978 readbuf
, writebuf
, offset
, len
);
1983 /* Target vector read/write partial wrapper functions. */
1986 target_read_partial (struct target_ops
*ops
,
1987 enum target_object object
,
1988 const char *annex
, gdb_byte
*buf
,
1989 ULONGEST offset
, LONGEST len
)
1991 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
1995 target_write_partial (struct target_ops
*ops
,
1996 enum target_object object
,
1997 const char *annex
, const gdb_byte
*buf
,
1998 ULONGEST offset
, LONGEST len
)
2000 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
2003 /* Wrappers to perform the full transfer. */
2005 /* For docs on target_read see target.h. */
2008 target_read (struct target_ops
*ops
,
2009 enum target_object object
,
2010 const char *annex
, gdb_byte
*buf
,
2011 ULONGEST offset
, LONGEST len
)
2015 while (xfered
< len
)
2017 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
2018 (gdb_byte
*) buf
+ xfered
,
2019 offset
+ xfered
, len
- xfered
);
2021 /* Call an observer, notifying them of the xfer progress? */
2032 /* Assuming that the entire [begin, end) range of memory cannot be
2033 read, try to read whatever subrange is possible to read.
2035 The function returns, in RESULT, either zero or one memory block.
2036 If there's a readable subrange at the beginning, it is completely
2037 read and returned. Any further readable subrange will not be read.
2038 Otherwise, if there's a readable subrange at the end, it will be
2039 completely read and returned. Any readable subranges before it
2040 (obviously, not starting at the beginning), will be ignored. In
2041 other cases -- either no readable subrange, or readable subrange(s)
2042 that is neither at the beginning, or end, nothing is returned.
2044 The purpose of this function is to handle a read across a boundary
2045 of accessible memory in a case when memory map is not available.
2046 The above restrictions are fine for this case, but will give
2047 incorrect results if the memory is 'patchy'. However, supporting
2048 'patchy' memory would require trying to read every single byte,
2049 and it seems unacceptable solution. Explicit memory map is
2050 recommended for this case -- and target_read_memory_robust will
2051 take care of reading multiple ranges then. */
2054 read_whatever_is_readable (struct target_ops
*ops
,
2055 ULONGEST begin
, ULONGEST end
,
2056 VEC(memory_read_result_s
) **result
)
2058 gdb_byte
*buf
= xmalloc (end
- begin
);
2059 ULONGEST current_begin
= begin
;
2060 ULONGEST current_end
= end
;
2062 memory_read_result_s r
;
2064 /* If we previously failed to read 1 byte, nothing can be done here. */
2065 if (end
- begin
<= 1)
2071 /* Check that either first or the last byte is readable, and give up
2072 if not. This heuristic is meant to permit reading accessible memory
2073 at the boundary of accessible region. */
2074 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2075 buf
, begin
, 1) == 1)
2080 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2081 buf
+ (end
-begin
) - 1, end
- 1, 1) == 1)
2092 /* Loop invariant is that the [current_begin, current_end) was previously
2093 found to be not readable as a whole.
2095 Note loop condition -- if the range has 1 byte, we can't divide the range
2096 so there's no point trying further. */
2097 while (current_end
- current_begin
> 1)
2099 ULONGEST first_half_begin
, first_half_end
;
2100 ULONGEST second_half_begin
, second_half_end
;
2102 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2106 first_half_begin
= current_begin
;
2107 first_half_end
= middle
;
2108 second_half_begin
= middle
;
2109 second_half_end
= current_end
;
2113 first_half_begin
= middle
;
2114 first_half_end
= current_end
;
2115 second_half_begin
= current_begin
;
2116 second_half_end
= middle
;
2119 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2120 buf
+ (first_half_begin
- begin
),
2122 first_half_end
- first_half_begin
);
2124 if (xfer
== first_half_end
- first_half_begin
)
2126 /* This half reads up fine. So, the error must be in the
2128 current_begin
= second_half_begin
;
2129 current_end
= second_half_end
;
2133 /* This half is not readable. Because we've tried one byte, we
2134 know some part of this half if actually redable. Go to the next
2135 iteration to divide again and try to read.
2137 We don't handle the other half, because this function only tries
2138 to read a single readable subrange. */
2139 current_begin
= first_half_begin
;
2140 current_end
= first_half_end
;
2146 /* The [begin, current_begin) range has been read. */
2148 r
.end
= current_begin
;
2153 /* The [current_end, end) range has been read. */
2154 LONGEST rlen
= end
- current_end
;
2156 r
.data
= xmalloc (rlen
);
2157 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2158 r
.begin
= current_end
;
2162 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2166 free_memory_read_result_vector (void *x
)
2168 VEC(memory_read_result_s
) *v
= x
;
2169 memory_read_result_s
*current
;
2172 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2174 xfree (current
->data
);
2176 VEC_free (memory_read_result_s
, v
);
2179 VEC(memory_read_result_s
) *
2180 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2182 VEC(memory_read_result_s
) *result
= 0;
2185 while (xfered
< len
)
2187 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2190 /* If there is no explicit region, a fake one should be created. */
2191 gdb_assert (region
);
2193 if (region
->hi
== 0)
2194 rlen
= len
- xfered
;
2196 rlen
= region
->hi
- offset
;
2198 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2200 /* Cannot read this region. Note that we can end up here only
2201 if the region is explicitly marked inaccessible, or
2202 'inaccessible-by-default' is in effect. */
2207 LONGEST to_read
= min (len
- xfered
, rlen
);
2208 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2210 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2211 (gdb_byte
*) buffer
,
2212 offset
+ xfered
, to_read
);
2213 /* Call an observer, notifying them of the xfer progress? */
2216 /* Got an error reading full chunk. See if maybe we can read
2219 read_whatever_is_readable (ops
, offset
+ xfered
,
2220 offset
+ xfered
+ to_read
, &result
);
2225 struct memory_read_result r
;
2227 r
.begin
= offset
+ xfered
;
2228 r
.end
= r
.begin
+ xfer
;
2229 VEC_safe_push (memory_read_result_s
, result
, &r
);
2239 /* An alternative to target_write with progress callbacks. */
2242 target_write_with_progress (struct target_ops
*ops
,
2243 enum target_object object
,
2244 const char *annex
, const gdb_byte
*buf
,
2245 ULONGEST offset
, LONGEST len
,
2246 void (*progress
) (ULONGEST
, void *), void *baton
)
2250 /* Give the progress callback a chance to set up. */
2252 (*progress
) (0, baton
);
2254 while (xfered
< len
)
2256 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
2257 (gdb_byte
*) buf
+ xfered
,
2258 offset
+ xfered
, len
- xfered
);
2266 (*progress
) (xfer
, baton
);
2274 /* For docs on target_write see target.h. */
2277 target_write (struct target_ops
*ops
,
2278 enum target_object object
,
2279 const char *annex
, const gdb_byte
*buf
,
2280 ULONGEST offset
, LONGEST len
)
2282 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2286 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2287 the size of the transferred data. PADDING additional bytes are
2288 available in *BUF_P. This is a helper function for
2289 target_read_alloc; see the declaration of that function for more
2293 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2294 const char *annex
, gdb_byte
**buf_p
, int padding
)
2296 size_t buf_alloc
, buf_pos
;
2300 /* This function does not have a length parameter; it reads the
2301 entire OBJECT). Also, it doesn't support objects fetched partly
2302 from one target and partly from another (in a different stratum,
2303 e.g. a core file and an executable). Both reasons make it
2304 unsuitable for reading memory. */
2305 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2307 /* Start by reading up to 4K at a time. The target will throttle
2308 this number down if necessary. */
2310 buf
= xmalloc (buf_alloc
);
2314 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2315 buf_pos
, buf_alloc
- buf_pos
- padding
);
2318 /* An error occurred. */
2324 /* Read all there was. */
2334 /* If the buffer is filling up, expand it. */
2335 if (buf_alloc
< buf_pos
* 2)
2338 buf
= xrealloc (buf
, buf_alloc
);
2345 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2346 the size of the transferred data. See the declaration in "target.h"
2347 function for more information about the return value. */
2350 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2351 const char *annex
, gdb_byte
**buf_p
)
2353 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2356 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2357 returned as a string, allocated using xmalloc. If an error occurs
2358 or the transfer is unsupported, NULL is returned. Empty objects
2359 are returned as allocated but empty strings. A warning is issued
2360 if the result contains any embedded NUL bytes. */
2363 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2367 LONGEST i
, transferred
;
2369 transferred
= target_read_alloc_1 (ops
, object
, annex
,
2370 (gdb_byte
**) &buffer
, 1);
2372 if (transferred
< 0)
2375 if (transferred
== 0)
2376 return xstrdup ("");
2378 buffer
[transferred
] = 0;
2380 /* Check for embedded NUL bytes; but allow trailing NULs. */
2381 for (i
= strlen (buffer
); i
< transferred
; i
++)
2384 warning (_("target object %d, annex %s, "
2385 "contained unexpected null characters"),
2386 (int) object
, annex
? annex
: "(none)");
2393 /* Memory transfer methods. */
2396 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2399 /* This method is used to read from an alternate, non-current
2400 target. This read must bypass the overlay support (as symbols
2401 don't match this target), and GDB's internal cache (wrong cache
2402 for this target). */
2403 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2405 memory_error (EIO
, addr
);
2409 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2410 int len
, enum bfd_endian byte_order
)
2412 gdb_byte buf
[sizeof (ULONGEST
)];
2414 gdb_assert (len
<= sizeof (buf
));
2415 get_target_memory (ops
, addr
, buf
, len
);
2416 return extract_unsigned_integer (buf
, len
, byte_order
);
2420 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2421 struct bp_target_info
*bp_tgt
)
2423 if (!may_insert_breakpoints
)
2425 warning (_("May not insert breakpoints"));
2429 return (*current_target
.to_insert_breakpoint
) (gdbarch
, bp_tgt
);
2433 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2434 struct bp_target_info
*bp_tgt
)
2436 /* This is kind of a weird case to handle, but the permission might
2437 have been changed after breakpoints were inserted - in which case
2438 we should just take the user literally and assume that any
2439 breakpoints should be left in place. */
2440 if (!may_insert_breakpoints
)
2442 warning (_("May not remove breakpoints"));
2446 return (*current_target
.to_remove_breakpoint
) (gdbarch
, bp_tgt
);
2450 target_info (char *args
, int from_tty
)
2452 struct target_ops
*t
;
2453 int has_all_mem
= 0;
2455 if (symfile_objfile
!= NULL
)
2456 printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile
->name
);
2458 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2460 if (!(*t
->to_has_memory
) (t
))
2463 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2466 printf_unfiltered (_("\tWhile running this, "
2467 "GDB does not access memory from...\n"));
2468 printf_unfiltered ("%s:\n", t
->to_longname
);
2469 (t
->to_files_info
) (t
);
2470 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2474 /* This function is called before any new inferior is created, e.g.
2475 by running a program, attaching, or connecting to a target.
2476 It cleans up any state from previous invocations which might
2477 change between runs. This is a subset of what target_preopen
2478 resets (things which might change between targets). */
2481 target_pre_inferior (int from_tty
)
2483 /* Clear out solib state. Otherwise the solib state of the previous
2484 inferior might have survived and is entirely wrong for the new
2485 target. This has been observed on GNU/Linux using glibc 2.3. How
2497 Cannot access memory at address 0xdeadbeef
2500 /* In some OSs, the shared library list is the same/global/shared
2501 across inferiors. If code is shared between processes, so are
2502 memory regions and features. */
2503 if (!gdbarch_has_global_solist (target_gdbarch ()))
2505 no_shared_libraries (NULL
, from_tty
);
2507 invalidate_target_mem_regions ();
2509 target_clear_description ();
2512 agent_capability_invalidate ();
2515 /* Callback for iterate_over_inferiors. Gets rid of the given
2519 dispose_inferior (struct inferior
*inf
, void *args
)
2521 struct thread_info
*thread
;
2523 thread
= any_thread_of_process (inf
->pid
);
2526 switch_to_thread (thread
->ptid
);
2528 /* Core inferiors actually should be detached, not killed. */
2529 if (target_has_execution
)
2532 target_detach (NULL
, 0);
2538 /* This is to be called by the open routine before it does
2542 target_preopen (int from_tty
)
2546 if (have_inferiors ())
2549 || !have_live_inferiors ()
2550 || query (_("A program is being debugged already. Kill it? ")))
2551 iterate_over_inferiors (dispose_inferior
, NULL
);
2553 error (_("Program not killed."));
2556 /* Calling target_kill may remove the target from the stack. But if
2557 it doesn't (which seems like a win for UDI), remove it now. */
2558 /* Leave the exec target, though. The user may be switching from a
2559 live process to a core of the same program. */
2560 pop_all_targets_above (file_stratum
, 0);
2562 target_pre_inferior (from_tty
);
2565 /* Detach a target after doing deferred register stores. */
2568 target_detach (char *args
, int from_tty
)
2570 struct target_ops
* t
;
2572 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2573 /* Don't remove global breakpoints here. They're removed on
2574 disconnection from the target. */
2577 /* If we're in breakpoints-always-inserted mode, have to remove
2578 them before detaching. */
2579 remove_breakpoints_pid (PIDGET (inferior_ptid
));
2581 prepare_for_detach ();
2583 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2585 if (t
->to_detach
!= NULL
)
2587 t
->to_detach (t
, args
, from_tty
);
2589 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2595 internal_error (__FILE__
, __LINE__
, _("could not find a target to detach"));
2599 target_disconnect (char *args
, int from_tty
)
2601 struct target_ops
*t
;
2603 /* If we're in breakpoints-always-inserted mode or if breakpoints
2604 are global across processes, we have to remove them before
2606 remove_breakpoints ();
2608 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2609 if (t
->to_disconnect
!= NULL
)
2612 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2614 t
->to_disconnect (t
, args
, from_tty
);
2622 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2624 struct target_ops
*t
;
2626 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2628 if (t
->to_wait
!= NULL
)
2630 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2634 char *status_string
;
2635 char *options_string
;
2637 status_string
= target_waitstatus_to_string (status
);
2638 options_string
= target_options_to_string (options
);
2639 fprintf_unfiltered (gdb_stdlog
,
2640 "target_wait (%d, status, options={%s})"
2642 PIDGET (ptid
), options_string
,
2643 PIDGET (retval
), status_string
);
2644 xfree (status_string
);
2645 xfree (options_string
);
2656 target_pid_to_str (ptid_t ptid
)
2658 struct target_ops
*t
;
2660 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2662 if (t
->to_pid_to_str
!= NULL
)
2663 return (*t
->to_pid_to_str
) (t
, ptid
);
2666 return normal_pid_to_str (ptid
);
2670 target_thread_name (struct thread_info
*info
)
2672 struct target_ops
*t
;
2674 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2676 if (t
->to_thread_name
!= NULL
)
2677 return (*t
->to_thread_name
) (info
);
2684 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2686 struct target_ops
*t
;
2688 target_dcache_invalidate ();
2690 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2692 if (t
->to_resume
!= NULL
)
2694 t
->to_resume (t
, ptid
, step
, signal
);
2696 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2698 step
? "step" : "continue",
2699 gdb_signal_to_name (signal
));
2701 registers_changed_ptid (ptid
);
2702 set_executing (ptid
, 1);
2703 set_running (ptid
, 1);
2704 clear_inline_frame_state (ptid
);
2713 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2715 struct target_ops
*t
;
2717 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2719 if (t
->to_pass_signals
!= NULL
)
2725 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2728 for (i
= 0; i
< numsigs
; i
++)
2729 if (pass_signals
[i
])
2730 fprintf_unfiltered (gdb_stdlog
, " %s",
2731 gdb_signal_to_name (i
));
2733 fprintf_unfiltered (gdb_stdlog
, " })\n");
2736 (*t
->to_pass_signals
) (numsigs
, pass_signals
);
2743 target_program_signals (int numsigs
, unsigned char *program_signals
)
2745 struct target_ops
*t
;
2747 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2749 if (t
->to_program_signals
!= NULL
)
2755 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2758 for (i
= 0; i
< numsigs
; i
++)
2759 if (program_signals
[i
])
2760 fprintf_unfiltered (gdb_stdlog
, " %s",
2761 gdb_signal_to_name (i
));
2763 fprintf_unfiltered (gdb_stdlog
, " })\n");
2766 (*t
->to_program_signals
) (numsigs
, program_signals
);
2772 /* Look through the list of possible targets for a target that can
2776 target_follow_fork (int follow_child
)
2778 struct target_ops
*t
;
2780 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2782 if (t
->to_follow_fork
!= NULL
)
2784 int retval
= t
->to_follow_fork (t
, follow_child
);
2787 fprintf_unfiltered (gdb_stdlog
, "target_follow_fork (%d) = %d\n",
2788 follow_child
, retval
);
2793 /* Some target returned a fork event, but did not know how to follow it. */
2794 internal_error (__FILE__
, __LINE__
,
2795 _("could not find a target to follow fork"));
2799 target_mourn_inferior (void)
2801 struct target_ops
*t
;
2803 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2805 if (t
->to_mourn_inferior
!= NULL
)
2807 t
->to_mourn_inferior (t
);
2809 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2811 /* We no longer need to keep handles on any of the object files.
2812 Make sure to release them to avoid unnecessarily locking any
2813 of them while we're not actually debugging. */
2814 bfd_cache_close_all ();
2820 internal_error (__FILE__
, __LINE__
,
2821 _("could not find a target to follow mourn inferior"));
2824 /* Look for a target which can describe architectural features, starting
2825 from TARGET. If we find one, return its description. */
2827 const struct target_desc
*
2828 target_read_description (struct target_ops
*target
)
2830 struct target_ops
*t
;
2832 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2833 if (t
->to_read_description
!= NULL
)
2835 const struct target_desc
*tdesc
;
2837 tdesc
= t
->to_read_description (t
);
2845 /* The default implementation of to_search_memory.
2846 This implements a basic search of memory, reading target memory and
2847 performing the search here (as opposed to performing the search in on the
2848 target side with, for example, gdbserver). */
2851 simple_search_memory (struct target_ops
*ops
,
2852 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2853 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2854 CORE_ADDR
*found_addrp
)
2856 /* NOTE: also defined in find.c testcase. */
2857 #define SEARCH_CHUNK_SIZE 16000
2858 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2859 /* Buffer to hold memory contents for searching. */
2860 gdb_byte
*search_buf
;
2861 unsigned search_buf_size
;
2862 struct cleanup
*old_cleanups
;
2864 search_buf_size
= chunk_size
+ pattern_len
- 1;
2866 /* No point in trying to allocate a buffer larger than the search space. */
2867 if (search_space_len
< search_buf_size
)
2868 search_buf_size
= search_space_len
;
2870 search_buf
= malloc (search_buf_size
);
2871 if (search_buf
== NULL
)
2872 error (_("Unable to allocate memory to perform the search."));
2873 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2875 /* Prime the search buffer. */
2877 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2878 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2880 warning (_("Unable to access %s bytes of target "
2881 "memory at %s, halting search."),
2882 pulongest (search_buf_size
), hex_string (start_addr
));
2883 do_cleanups (old_cleanups
);
2887 /* Perform the search.
2889 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2890 When we've scanned N bytes we copy the trailing bytes to the start and
2891 read in another N bytes. */
2893 while (search_space_len
>= pattern_len
)
2895 gdb_byte
*found_ptr
;
2896 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2898 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2899 pattern
, pattern_len
);
2901 if (found_ptr
!= NULL
)
2903 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2905 *found_addrp
= found_addr
;
2906 do_cleanups (old_cleanups
);
2910 /* Not found in this chunk, skip to next chunk. */
2912 /* Don't let search_space_len wrap here, it's unsigned. */
2913 if (search_space_len
>= chunk_size
)
2914 search_space_len
-= chunk_size
;
2916 search_space_len
= 0;
2918 if (search_space_len
>= pattern_len
)
2920 unsigned keep_len
= search_buf_size
- chunk_size
;
2921 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2924 /* Copy the trailing part of the previous iteration to the front
2925 of the buffer for the next iteration. */
2926 gdb_assert (keep_len
== pattern_len
- 1);
2927 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2929 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2931 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2932 search_buf
+ keep_len
, read_addr
,
2933 nr_to_read
) != nr_to_read
)
2935 warning (_("Unable to access %s bytes of target "
2936 "memory at %s, halting search."),
2937 plongest (nr_to_read
),
2938 hex_string (read_addr
));
2939 do_cleanups (old_cleanups
);
2943 start_addr
+= chunk_size
;
2949 do_cleanups (old_cleanups
);
2953 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2954 sequence of bytes in PATTERN with length PATTERN_LEN.
2956 The result is 1 if found, 0 if not found, and -1 if there was an error
2957 requiring halting of the search (e.g. memory read error).
2958 If the pattern is found the address is recorded in FOUND_ADDRP. */
2961 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2962 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2963 CORE_ADDR
*found_addrp
)
2965 struct target_ops
*t
;
2968 /* We don't use INHERIT to set current_target.to_search_memory,
2969 so we have to scan the target stack and handle targetdebug
2973 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2974 hex_string (start_addr
));
2976 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2977 if (t
->to_search_memory
!= NULL
)
2982 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2983 pattern
, pattern_len
, found_addrp
);
2987 /* If a special version of to_search_memory isn't available, use the
2989 found
= simple_search_memory (current_target
.beneath
,
2990 start_addr
, search_space_len
,
2991 pattern
, pattern_len
, found_addrp
);
2995 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
3000 /* Look through the currently pushed targets. If none of them will
3001 be able to restart the currently running process, issue an error
3005 target_require_runnable (void)
3007 struct target_ops
*t
;
3009 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3011 /* If this target knows how to create a new program, then
3012 assume we will still be able to after killing the current
3013 one. Either killing and mourning will not pop T, or else
3014 find_default_run_target will find it again. */
3015 if (t
->to_create_inferior
!= NULL
)
3018 /* Do not worry about thread_stratum targets that can not
3019 create inferiors. Assume they will be pushed again if
3020 necessary, and continue to the process_stratum. */
3021 if (t
->to_stratum
== thread_stratum
3022 || t
->to_stratum
== arch_stratum
)
3025 error (_("The \"%s\" target does not support \"run\". "
3026 "Try \"help target\" or \"continue\"."),
3030 /* This function is only called if the target is running. In that
3031 case there should have been a process_stratum target and it
3032 should either know how to create inferiors, or not... */
3033 internal_error (__FILE__
, __LINE__
, _("No targets found"));
3036 /* Look through the list of possible targets for a target that can
3037 execute a run or attach command without any other data. This is
3038 used to locate the default process stratum.
3040 If DO_MESG is not NULL, the result is always valid (error() is
3041 called for errors); else, return NULL on error. */
3043 static struct target_ops
*
3044 find_default_run_target (char *do_mesg
)
3046 struct target_ops
**t
;
3047 struct target_ops
*runable
= NULL
;
3052 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3055 if ((*t
)->to_can_run
&& target_can_run (*t
))
3065 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3074 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3076 struct target_ops
*t
;
3078 t
= find_default_run_target ("attach");
3079 (t
->to_attach
) (t
, args
, from_tty
);
3084 find_default_create_inferior (struct target_ops
*ops
,
3085 char *exec_file
, char *allargs
, char **env
,
3088 struct target_ops
*t
;
3090 t
= find_default_run_target ("run");
3091 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3096 find_default_can_async_p (void)
3098 struct target_ops
*t
;
3100 /* This may be called before the target is pushed on the stack;
3101 look for the default process stratum. If there's none, gdb isn't
3102 configured with a native debugger, and target remote isn't
3104 t
= find_default_run_target (NULL
);
3105 if (t
&& t
->to_can_async_p
)
3106 return (t
->to_can_async_p
) ();
3111 find_default_is_async_p (void)
3113 struct target_ops
*t
;
3115 /* This may be called before the target is pushed on the stack;
3116 look for the default process stratum. If there's none, gdb isn't
3117 configured with a native debugger, and target remote isn't
3119 t
= find_default_run_target (NULL
);
3120 if (t
&& t
->to_is_async_p
)
3121 return (t
->to_is_async_p
) ();
3126 find_default_supports_non_stop (void)
3128 struct target_ops
*t
;
3130 t
= find_default_run_target (NULL
);
3131 if (t
&& t
->to_supports_non_stop
)
3132 return (t
->to_supports_non_stop
) ();
3137 target_supports_non_stop (void)
3139 struct target_ops
*t
;
3141 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3142 if (t
->to_supports_non_stop
)
3143 return t
->to_supports_non_stop ();
3148 /* Implement the "info proc" command. */
3151 target_info_proc (char *args
, enum info_proc_what what
)
3153 struct target_ops
*t
;
3155 /* If we're already connected to something that can get us OS
3156 related data, use it. Otherwise, try using the native
3158 if (current_target
.to_stratum
>= process_stratum
)
3159 t
= current_target
.beneath
;
3161 t
= find_default_run_target (NULL
);
3163 for (; t
!= NULL
; t
= t
->beneath
)
3165 if (t
->to_info_proc
!= NULL
)
3167 t
->to_info_proc (t
, args
, what
);
3170 fprintf_unfiltered (gdb_stdlog
,
3171 "target_info_proc (\"%s\", %d)\n", args
, what
);
3181 find_default_supports_disable_randomization (void)
3183 struct target_ops
*t
;
3185 t
= find_default_run_target (NULL
);
3186 if (t
&& t
->to_supports_disable_randomization
)
3187 return (t
->to_supports_disable_randomization
) ();
3192 target_supports_disable_randomization (void)
3194 struct target_ops
*t
;
3196 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3197 if (t
->to_supports_disable_randomization
)
3198 return t
->to_supports_disable_randomization ();
3204 target_get_osdata (const char *type
)
3206 struct target_ops
*t
;
3208 /* If we're already connected to something that can get us OS
3209 related data, use it. Otherwise, try using the native
3211 if (current_target
.to_stratum
>= process_stratum
)
3212 t
= current_target
.beneath
;
3214 t
= find_default_run_target ("get OS data");
3219 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3222 /* Determine the current address space of thread PTID. */
3224 struct address_space
*
3225 target_thread_address_space (ptid_t ptid
)
3227 struct address_space
*aspace
;
3228 struct inferior
*inf
;
3229 struct target_ops
*t
;
3231 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3233 if (t
->to_thread_address_space
!= NULL
)
3235 aspace
= t
->to_thread_address_space (t
, ptid
);
3236 gdb_assert (aspace
);
3239 fprintf_unfiltered (gdb_stdlog
,
3240 "target_thread_address_space (%s) = %d\n",
3241 target_pid_to_str (ptid
),
3242 address_space_num (aspace
));
3247 /* Fall-back to the "main" address space of the inferior. */
3248 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3250 if (inf
== NULL
|| inf
->aspace
== NULL
)
3251 internal_error (__FILE__
, __LINE__
,
3252 _("Can't determine the current "
3253 "address space of thread %s\n"),
3254 target_pid_to_str (ptid
));
3260 /* Target file operations. */
3262 static struct target_ops
*
3263 default_fileio_target (void)
3265 /* If we're already connected to something that can perform
3266 file I/O, use it. Otherwise, try using the native target. */
3267 if (current_target
.to_stratum
>= process_stratum
)
3268 return current_target
.beneath
;
3270 return find_default_run_target ("file I/O");
3273 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3274 target file descriptor, or -1 if an error occurs (and set
3277 target_fileio_open (const char *filename
, int flags
, int mode
,
3280 struct target_ops
*t
;
3282 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3284 if (t
->to_fileio_open
!= NULL
)
3286 int fd
= t
->to_fileio_open (filename
, flags
, mode
, target_errno
);
3289 fprintf_unfiltered (gdb_stdlog
,
3290 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3291 filename
, flags
, mode
,
3292 fd
, fd
!= -1 ? 0 : *target_errno
);
3297 *target_errno
= FILEIO_ENOSYS
;
3301 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3302 Return the number of bytes written, or -1 if an error occurs
3303 (and set *TARGET_ERRNO). */
3305 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3306 ULONGEST offset
, int *target_errno
)
3308 struct target_ops
*t
;
3310 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3312 if (t
->to_fileio_pwrite
!= NULL
)
3314 int ret
= t
->to_fileio_pwrite (fd
, write_buf
, len
, offset
,
3318 fprintf_unfiltered (gdb_stdlog
,
3319 "target_fileio_pwrite (%d,...,%d,%s) "
3321 fd
, len
, pulongest (offset
),
3322 ret
, ret
!= -1 ? 0 : *target_errno
);
3327 *target_errno
= FILEIO_ENOSYS
;
3331 /* Read up to LEN bytes FD on the target into READ_BUF.
3332 Return the number of bytes read, or -1 if an error occurs
3333 (and set *TARGET_ERRNO). */
3335 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3336 ULONGEST offset
, int *target_errno
)
3338 struct target_ops
*t
;
3340 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3342 if (t
->to_fileio_pread
!= NULL
)
3344 int ret
= t
->to_fileio_pread (fd
, read_buf
, len
, offset
,
3348 fprintf_unfiltered (gdb_stdlog
,
3349 "target_fileio_pread (%d,...,%d,%s) "
3351 fd
, len
, pulongest (offset
),
3352 ret
, ret
!= -1 ? 0 : *target_errno
);
3357 *target_errno
= FILEIO_ENOSYS
;
3361 /* Close FD on the target. Return 0, or -1 if an error occurs
3362 (and set *TARGET_ERRNO). */
3364 target_fileio_close (int fd
, int *target_errno
)
3366 struct target_ops
*t
;
3368 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3370 if (t
->to_fileio_close
!= NULL
)
3372 int ret
= t
->to_fileio_close (fd
, target_errno
);
3375 fprintf_unfiltered (gdb_stdlog
,
3376 "target_fileio_close (%d) = %d (%d)\n",
3377 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3382 *target_errno
= FILEIO_ENOSYS
;
3386 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3387 occurs (and set *TARGET_ERRNO). */
3389 target_fileio_unlink (const char *filename
, int *target_errno
)
3391 struct target_ops
*t
;
3393 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3395 if (t
->to_fileio_unlink
!= NULL
)
3397 int ret
= t
->to_fileio_unlink (filename
, target_errno
);
3400 fprintf_unfiltered (gdb_stdlog
,
3401 "target_fileio_unlink (%s) = %d (%d)\n",
3402 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3407 *target_errno
= FILEIO_ENOSYS
;
3411 /* Read value of symbolic link FILENAME on the target. Return a
3412 null-terminated string allocated via xmalloc, or NULL if an error
3413 occurs (and set *TARGET_ERRNO). */
3415 target_fileio_readlink (const char *filename
, int *target_errno
)
3417 struct target_ops
*t
;
3419 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3421 if (t
->to_fileio_readlink
!= NULL
)
3423 char *ret
= t
->to_fileio_readlink (filename
, target_errno
);
3426 fprintf_unfiltered (gdb_stdlog
,
3427 "target_fileio_readlink (%s) = %s (%d)\n",
3428 filename
, ret
? ret
: "(nil)",
3429 ret
? 0 : *target_errno
);
3434 *target_errno
= FILEIO_ENOSYS
;
3439 target_fileio_close_cleanup (void *opaque
)
3441 int fd
= *(int *) opaque
;
3444 target_fileio_close (fd
, &target_errno
);
3447 /* Read target file FILENAME. Store the result in *BUF_P and
3448 return the size of the transferred data. PADDING additional bytes are
3449 available in *BUF_P. This is a helper function for
3450 target_fileio_read_alloc; see the declaration of that function for more
3454 target_fileio_read_alloc_1 (const char *filename
,
3455 gdb_byte
**buf_p
, int padding
)
3457 struct cleanup
*close_cleanup
;
3458 size_t buf_alloc
, buf_pos
;
3464 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3468 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3470 /* Start by reading up to 4K at a time. The target will throttle
3471 this number down if necessary. */
3473 buf
= xmalloc (buf_alloc
);
3477 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3478 buf_alloc
- buf_pos
- padding
, buf_pos
,
3482 /* An error occurred. */
3483 do_cleanups (close_cleanup
);
3489 /* Read all there was. */
3490 do_cleanups (close_cleanup
);
3500 /* If the buffer is filling up, expand it. */
3501 if (buf_alloc
< buf_pos
* 2)
3504 buf
= xrealloc (buf
, buf_alloc
);
3511 /* Read target file FILENAME. Store the result in *BUF_P and return
3512 the size of the transferred data. See the declaration in "target.h"
3513 function for more information about the return value. */
3516 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3518 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3521 /* Read target file FILENAME. The result is NUL-terminated and
3522 returned as a string, allocated using xmalloc. If an error occurs
3523 or the transfer is unsupported, NULL is returned. Empty objects
3524 are returned as allocated but empty strings. A warning is issued
3525 if the result contains any embedded NUL bytes. */
3528 target_fileio_read_stralloc (const char *filename
)
3531 LONGEST i
, transferred
;
3533 transferred
= target_fileio_read_alloc_1 (filename
,
3534 (gdb_byte
**) &buffer
, 1);
3536 if (transferred
< 0)
3539 if (transferred
== 0)
3540 return xstrdup ("");
3542 buffer
[transferred
] = 0;
3544 /* Check for embedded NUL bytes; but allow trailing NULs. */
3545 for (i
= strlen (buffer
); i
< transferred
; i
++)
3548 warning (_("target file %s "
3549 "contained unexpected null characters"),
3559 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3561 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3565 default_watchpoint_addr_within_range (struct target_ops
*target
,
3567 CORE_ADDR start
, int length
)
3569 return addr
>= start
&& addr
< start
+ length
;
3572 static struct gdbarch
*
3573 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3575 return target_gdbarch ();
3591 return_minus_one (void)
3596 /* Find a single runnable target in the stack and return it. If for
3597 some reason there is more than one, return NULL. */
3600 find_run_target (void)
3602 struct target_ops
**t
;
3603 struct target_ops
*runable
= NULL
;
3608 for (t
= target_structs
; t
< target_structs
+ target_struct_size
; ++t
)
3610 if ((*t
)->to_can_run
&& target_can_run (*t
))
3617 return (count
== 1 ? runable
: NULL
);
3621 * Find the next target down the stack from the specified target.
3625 find_target_beneath (struct target_ops
*t
)
3631 /* The inferior process has died. Long live the inferior! */
3634 generic_mourn_inferior (void)
3638 ptid
= inferior_ptid
;
3639 inferior_ptid
= null_ptid
;
3641 /* Mark breakpoints uninserted in case something tries to delete a
3642 breakpoint while we delete the inferior's threads (which would
3643 fail, since the inferior is long gone). */
3644 mark_breakpoints_out ();
3646 if (!ptid_equal (ptid
, null_ptid
))
3648 int pid
= ptid_get_pid (ptid
);
3649 exit_inferior (pid
);
3652 /* Note this wipes step-resume breakpoints, so needs to be done
3653 after exit_inferior, which ends up referencing the step-resume
3654 breakpoints through clear_thread_inferior_resources. */
3655 breakpoint_init_inferior (inf_exited
);
3657 registers_changed ();
3659 reopen_exec_file ();
3660 reinit_frame_cache ();
3662 if (deprecated_detach_hook
)
3663 deprecated_detach_hook ();
3666 /* Convert a normal process ID to a string. Returns the string in a
3670 normal_pid_to_str (ptid_t ptid
)
3672 static char buf
[32];
3674 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3679 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3681 return normal_pid_to_str (ptid
);
3684 /* Error-catcher for target_find_memory_regions. */
3686 dummy_find_memory_regions (find_memory_region_ftype ignore1
, void *ignore2
)
3688 error (_("Command not implemented for this target."));
3692 /* Error-catcher for target_make_corefile_notes. */
3694 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
3696 error (_("Command not implemented for this target."));
3700 /* Error-catcher for target_get_bookmark. */
3702 dummy_get_bookmark (char *ignore1
, int ignore2
)
3708 /* Error-catcher for target_goto_bookmark. */
3710 dummy_goto_bookmark (gdb_byte
*ignore
, int from_tty
)
3715 /* Set up the handful of non-empty slots needed by the dummy target
3719 init_dummy_target (void)
3721 dummy_target
.to_shortname
= "None";
3722 dummy_target
.to_longname
= "None";
3723 dummy_target
.to_doc
= "";
3724 dummy_target
.to_attach
= find_default_attach
;
3725 dummy_target
.to_detach
=
3726 (void (*)(struct target_ops
*, char *, int))target_ignore
;
3727 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3728 dummy_target
.to_can_async_p
= find_default_can_async_p
;
3729 dummy_target
.to_is_async_p
= find_default_is_async_p
;
3730 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3731 dummy_target
.to_supports_disable_randomization
3732 = find_default_supports_disable_randomization
;
3733 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3734 dummy_target
.to_stratum
= dummy_stratum
;
3735 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
3736 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
3737 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
3738 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
3739 dummy_target
.to_xfer_partial
= default_xfer_partial
;
3740 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3741 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3742 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3743 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3744 dummy_target
.to_has_execution
3745 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3746 dummy_target
.to_stopped_by_watchpoint
= return_zero
;
3747 dummy_target
.to_stopped_data_address
=
3748 (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
;
3749 dummy_target
.to_magic
= OPS_MAGIC
;
3753 debug_to_open (char *args
, int from_tty
)
3755 debug_target
.to_open (args
, from_tty
);
3757 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3761 target_close (struct target_ops
*targ
, int quitting
)
3763 if (targ
->to_xclose
!= NULL
)
3764 targ
->to_xclose (targ
, quitting
);
3765 else if (targ
->to_close
!= NULL
)
3766 targ
->to_close (quitting
);
3769 fprintf_unfiltered (gdb_stdlog
, "target_close (%d)\n", quitting
);
3773 target_attach (char *args
, int from_tty
)
3775 struct target_ops
*t
;
3777 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3779 if (t
->to_attach
!= NULL
)
3781 t
->to_attach (t
, args
, from_tty
);
3783 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3789 internal_error (__FILE__
, __LINE__
,
3790 _("could not find a target to attach"));
3794 target_thread_alive (ptid_t ptid
)
3796 struct target_ops
*t
;
3798 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3800 if (t
->to_thread_alive
!= NULL
)
3804 retval
= t
->to_thread_alive (t
, ptid
);
3806 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3807 PIDGET (ptid
), retval
);
3817 target_find_new_threads (void)
3819 struct target_ops
*t
;
3821 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3823 if (t
->to_find_new_threads
!= NULL
)
3825 t
->to_find_new_threads (t
);
3827 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3835 target_stop (ptid_t ptid
)
3839 warning (_("May not interrupt or stop the target, ignoring attempt"));
3843 (*current_target
.to_stop
) (ptid
);
3847 debug_to_post_attach (int pid
)
3849 debug_target
.to_post_attach (pid
);
3851 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3854 /* Return a pretty printed form of target_waitstatus.
3855 Space for the result is malloc'd, caller must free. */
3858 target_waitstatus_to_string (const struct target_waitstatus
*ws
)
3860 const char *kind_str
= "status->kind = ";
3864 case TARGET_WAITKIND_EXITED
:
3865 return xstrprintf ("%sexited, status = %d",
3866 kind_str
, ws
->value
.integer
);
3867 case TARGET_WAITKIND_STOPPED
:
3868 return xstrprintf ("%sstopped, signal = %s",
3869 kind_str
, gdb_signal_to_name (ws
->value
.sig
));
3870 case TARGET_WAITKIND_SIGNALLED
:
3871 return xstrprintf ("%ssignalled, signal = %s",
3872 kind_str
, gdb_signal_to_name (ws
->value
.sig
));
3873 case TARGET_WAITKIND_LOADED
:
3874 return xstrprintf ("%sloaded", kind_str
);
3875 case TARGET_WAITKIND_FORKED
:
3876 return xstrprintf ("%sforked", kind_str
);
3877 case TARGET_WAITKIND_VFORKED
:
3878 return xstrprintf ("%svforked", kind_str
);
3879 case TARGET_WAITKIND_EXECD
:
3880 return xstrprintf ("%sexecd", kind_str
);
3881 case TARGET_WAITKIND_VFORK_DONE
:
3882 return xstrprintf ("%svfork-done", kind_str
);
3883 case TARGET_WAITKIND_SYSCALL_ENTRY
:
3884 return xstrprintf ("%sentered syscall", kind_str
);
3885 case TARGET_WAITKIND_SYSCALL_RETURN
:
3886 return xstrprintf ("%sexited syscall", kind_str
);
3887 case TARGET_WAITKIND_SPURIOUS
:
3888 return xstrprintf ("%sspurious", kind_str
);
3889 case TARGET_WAITKIND_IGNORE
:
3890 return xstrprintf ("%signore", kind_str
);
3891 case TARGET_WAITKIND_NO_HISTORY
:
3892 return xstrprintf ("%sno-history", kind_str
);
3893 case TARGET_WAITKIND_NO_RESUMED
:
3894 return xstrprintf ("%sno-resumed", kind_str
);
3896 return xstrprintf ("%sunknown???", kind_str
);
3900 /* Concatenate ELEM to LIST, a comma separate list, and return the
3901 result. The LIST incoming argument is released. */
3904 str_comma_list_concat_elem (char *list
, const char *elem
)
3907 return xstrdup (elem
);
3909 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3912 /* Helper for target_options_to_string. If OPT is present in
3913 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3914 Returns the new resulting string. OPT is removed from
3918 do_option (int *target_options
, char *ret
,
3919 int opt
, char *opt_str
)
3921 if ((*target_options
& opt
) != 0)
3923 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3924 *target_options
&= ~opt
;
3931 target_options_to_string (int target_options
)
3935 #define DO_TARG_OPTION(OPT) \
3936 ret = do_option (&target_options, ret, OPT, #OPT)
3938 DO_TARG_OPTION (TARGET_WNOHANG
);
3940 if (target_options
!= 0)
3941 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3949 debug_print_register (const char * func
,
3950 struct regcache
*regcache
, int regno
)
3952 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3954 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3955 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3956 && gdbarch_register_name (gdbarch
, regno
) != NULL
3957 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3958 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3959 gdbarch_register_name (gdbarch
, regno
));
3961 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3962 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3964 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3965 int i
, size
= register_size (gdbarch
, regno
);
3966 gdb_byte buf
[MAX_REGISTER_SIZE
];
3968 regcache_raw_collect (regcache
, regno
, buf
);
3969 fprintf_unfiltered (gdb_stdlog
, " = ");
3970 for (i
= 0; i
< size
; i
++)
3972 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3974 if (size
<= sizeof (LONGEST
))
3976 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3978 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3979 core_addr_to_string_nz (val
), plongest (val
));
3982 fprintf_unfiltered (gdb_stdlog
, "\n");
3986 target_fetch_registers (struct regcache
*regcache
, int regno
)
3988 struct target_ops
*t
;
3990 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3992 if (t
->to_fetch_registers
!= NULL
)
3994 t
->to_fetch_registers (t
, regcache
, regno
);
3996 debug_print_register ("target_fetch_registers", regcache
, regno
);
4003 target_store_registers (struct regcache
*regcache
, int regno
)
4005 struct target_ops
*t
;
4007 if (!may_write_registers
)
4008 error (_("Writing to registers is not allowed (regno %d)"), regno
);
4010 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4012 if (t
->to_store_registers
!= NULL
)
4014 t
->to_store_registers (t
, regcache
, regno
);
4017 debug_print_register ("target_store_registers", regcache
, regno
);
4027 target_core_of_thread (ptid_t ptid
)
4029 struct target_ops
*t
;
4031 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4033 if (t
->to_core_of_thread
!= NULL
)
4035 int retval
= t
->to_core_of_thread (t
, ptid
);
4038 fprintf_unfiltered (gdb_stdlog
,
4039 "target_core_of_thread (%d) = %d\n",
4040 PIDGET (ptid
), retval
);
4049 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
4051 struct target_ops
*t
;
4053 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4055 if (t
->to_verify_memory
!= NULL
)
4057 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
4060 fprintf_unfiltered (gdb_stdlog
,
4061 "target_verify_memory (%s, %s) = %d\n",
4062 paddress (target_gdbarch (), memaddr
),
4072 /* The documentation for this function is in its prototype declaration in
4076 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4078 struct target_ops
*t
;
4080 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4081 if (t
->to_insert_mask_watchpoint
!= NULL
)
4085 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
4088 fprintf_unfiltered (gdb_stdlog
, "\
4089 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
4090 core_addr_to_string (addr
),
4091 core_addr_to_string (mask
), rw
, ret
);
4099 /* The documentation for this function is in its prototype declaration in
4103 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4105 struct target_ops
*t
;
4107 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4108 if (t
->to_remove_mask_watchpoint
!= NULL
)
4112 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
4115 fprintf_unfiltered (gdb_stdlog
, "\
4116 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
4117 core_addr_to_string (addr
),
4118 core_addr_to_string (mask
), rw
, ret
);
4126 /* The documentation for this function is in its prototype declaration
4130 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4132 struct target_ops
*t
;
4134 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4135 if (t
->to_masked_watch_num_registers
!= NULL
)
4136 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4141 /* The documentation for this function is in its prototype declaration
4145 target_ranged_break_num_registers (void)
4147 struct target_ops
*t
;
4149 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4150 if (t
->to_ranged_break_num_registers
!= NULL
)
4151 return t
->to_ranged_break_num_registers (t
);
4159 target_supports_btrace (void)
4161 struct target_ops
*t
;
4163 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4164 if (t
->to_supports_btrace
!= NULL
)
4165 return t
->to_supports_btrace ();
4172 struct btrace_target_info
*
4173 target_enable_btrace (ptid_t ptid
)
4175 struct target_ops
*t
;
4177 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4178 if (t
->to_enable_btrace
!= NULL
)
4179 return t
->to_enable_btrace (ptid
);
4188 target_disable_btrace (struct btrace_target_info
*btinfo
)
4190 struct target_ops
*t
;
4192 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4193 if (t
->to_disable_btrace
!= NULL
)
4194 return t
->to_disable_btrace (btinfo
);
4202 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4204 struct target_ops
*t
;
4206 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4207 if (t
->to_teardown_btrace
!= NULL
)
4208 return t
->to_teardown_btrace (btinfo
);
4215 VEC (btrace_block_s
) *
4216 target_read_btrace (struct btrace_target_info
*btinfo
,
4217 enum btrace_read_type type
)
4219 struct target_ops
*t
;
4221 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4222 if (t
->to_read_btrace
!= NULL
)
4223 return t
->to_read_btrace (btinfo
, type
);
4230 debug_to_prepare_to_store (struct regcache
*regcache
)
4232 debug_target
.to_prepare_to_store (regcache
);
4234 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4238 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4239 int write
, struct mem_attrib
*attrib
,
4240 struct target_ops
*target
)
4244 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4247 fprintf_unfiltered (gdb_stdlog
,
4248 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4249 paddress (target_gdbarch (), memaddr
), len
,
4250 write
? "write" : "read", retval
);
4256 fputs_unfiltered (", bytes =", gdb_stdlog
);
4257 for (i
= 0; i
< retval
; i
++)
4259 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4261 if (targetdebug
< 2 && i
> 0)
4263 fprintf_unfiltered (gdb_stdlog
, " ...");
4266 fprintf_unfiltered (gdb_stdlog
, "\n");
4269 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4273 fputc_unfiltered ('\n', gdb_stdlog
);
4279 debug_to_files_info (struct target_ops
*target
)
4281 debug_target
.to_files_info (target
);
4283 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4287 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
4288 struct bp_target_info
*bp_tgt
)
4292 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
4294 fprintf_unfiltered (gdb_stdlog
,
4295 "target_insert_breakpoint (%s, xxx) = %ld\n",
4296 core_addr_to_string (bp_tgt
->placed_address
),
4297 (unsigned long) retval
);
4302 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
4303 struct bp_target_info
*bp_tgt
)
4307 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
4309 fprintf_unfiltered (gdb_stdlog
,
4310 "target_remove_breakpoint (%s, xxx) = %ld\n",
4311 core_addr_to_string (bp_tgt
->placed_address
),
4312 (unsigned long) retval
);
4317 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
4321 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
4323 fprintf_unfiltered (gdb_stdlog
,
4324 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4325 (unsigned long) type
,
4326 (unsigned long) cnt
,
4327 (unsigned long) from_tty
,
4328 (unsigned long) retval
);
4333 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
4337 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
4339 fprintf_unfiltered (gdb_stdlog
,
4340 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4341 core_addr_to_string (addr
), (unsigned long) len
,
4342 core_addr_to_string (retval
));
4347 debug_to_can_accel_watchpoint_condition (CORE_ADDR addr
, int len
, int rw
,
4348 struct expression
*cond
)
4352 retval
= debug_target
.to_can_accel_watchpoint_condition (addr
, len
,
4355 fprintf_unfiltered (gdb_stdlog
,
4356 "target_can_accel_watchpoint_condition "
4357 "(%s, %d, %d, %s) = %ld\n",
4358 core_addr_to_string (addr
), len
, rw
,
4359 host_address_to_string (cond
), (unsigned long) retval
);
4364 debug_to_stopped_by_watchpoint (void)
4368 retval
= debug_target
.to_stopped_by_watchpoint ();
4370 fprintf_unfiltered (gdb_stdlog
,
4371 "target_stopped_by_watchpoint () = %ld\n",
4372 (unsigned long) retval
);
4377 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4381 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4383 fprintf_unfiltered (gdb_stdlog
,
4384 "target_stopped_data_address ([%s]) = %ld\n",
4385 core_addr_to_string (*addr
),
4386 (unsigned long)retval
);
4391 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4393 CORE_ADDR start
, int length
)
4397 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4400 fprintf_filtered (gdb_stdlog
,
4401 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4402 core_addr_to_string (addr
), core_addr_to_string (start
),
4408 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
4409 struct bp_target_info
*bp_tgt
)
4413 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
4415 fprintf_unfiltered (gdb_stdlog
,
4416 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4417 core_addr_to_string (bp_tgt
->placed_address
),
4418 (unsigned long) retval
);
4423 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
4424 struct bp_target_info
*bp_tgt
)
4428 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
4430 fprintf_unfiltered (gdb_stdlog
,
4431 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4432 core_addr_to_string (bp_tgt
->placed_address
),
4433 (unsigned long) retval
);
4438 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
4439 struct expression
*cond
)
4443 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
, cond
);
4445 fprintf_unfiltered (gdb_stdlog
,
4446 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4447 core_addr_to_string (addr
), len
, type
,
4448 host_address_to_string (cond
), (unsigned long) retval
);
4453 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
4454 struct expression
*cond
)
4458 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
, cond
);
4460 fprintf_unfiltered (gdb_stdlog
,
4461 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4462 core_addr_to_string (addr
), len
, type
,
4463 host_address_to_string (cond
), (unsigned long) retval
);
4468 debug_to_terminal_init (void)
4470 debug_target
.to_terminal_init ();
4472 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4476 debug_to_terminal_inferior (void)
4478 debug_target
.to_terminal_inferior ();
4480 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4484 debug_to_terminal_ours_for_output (void)
4486 debug_target
.to_terminal_ours_for_output ();
4488 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4492 debug_to_terminal_ours (void)
4494 debug_target
.to_terminal_ours ();
4496 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4500 debug_to_terminal_save_ours (void)
4502 debug_target
.to_terminal_save_ours ();
4504 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4508 debug_to_terminal_info (char *arg
, int from_tty
)
4510 debug_target
.to_terminal_info (arg
, from_tty
);
4512 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4517 debug_to_load (char *args
, int from_tty
)
4519 debug_target
.to_load (args
, from_tty
);
4521 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4525 debug_to_post_startup_inferior (ptid_t ptid
)
4527 debug_target
.to_post_startup_inferior (ptid
);
4529 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4534 debug_to_insert_fork_catchpoint (int pid
)
4538 retval
= debug_target
.to_insert_fork_catchpoint (pid
);
4540 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4547 debug_to_remove_fork_catchpoint (int pid
)
4551 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
4553 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4560 debug_to_insert_vfork_catchpoint (int pid
)
4564 retval
= debug_target
.to_insert_vfork_catchpoint (pid
);
4566 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4573 debug_to_remove_vfork_catchpoint (int pid
)
4577 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
4579 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4586 debug_to_insert_exec_catchpoint (int pid
)
4590 retval
= debug_target
.to_insert_exec_catchpoint (pid
);
4592 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4599 debug_to_remove_exec_catchpoint (int pid
)
4603 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
4605 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4612 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
4616 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
4618 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4619 pid
, wait_status
, *exit_status
, has_exited
);
4625 debug_to_can_run (void)
4629 retval
= debug_target
.to_can_run ();
4631 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4636 static struct gdbarch
*
4637 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4639 struct gdbarch
*retval
;
4641 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4643 fprintf_unfiltered (gdb_stdlog
,
4644 "target_thread_architecture (%s) = %s [%s]\n",
4645 target_pid_to_str (ptid
),
4646 host_address_to_string (retval
),
4647 gdbarch_bfd_arch_info (retval
)->printable_name
);
4652 debug_to_stop (ptid_t ptid
)
4654 debug_target
.to_stop (ptid
);
4656 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4657 target_pid_to_str (ptid
));
4661 debug_to_rcmd (char *command
,
4662 struct ui_file
*outbuf
)
4664 debug_target
.to_rcmd (command
, outbuf
);
4665 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4669 debug_to_pid_to_exec_file (int pid
)
4673 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
4675 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4682 setup_target_debug (void)
4684 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4686 current_target
.to_open
= debug_to_open
;
4687 current_target
.to_post_attach
= debug_to_post_attach
;
4688 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4689 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4690 current_target
.to_files_info
= debug_to_files_info
;
4691 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4692 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4693 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4694 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4695 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4696 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4697 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4698 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4699 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4700 current_target
.to_watchpoint_addr_within_range
4701 = debug_to_watchpoint_addr_within_range
;
4702 current_target
.to_region_ok_for_hw_watchpoint
4703 = debug_to_region_ok_for_hw_watchpoint
;
4704 current_target
.to_can_accel_watchpoint_condition
4705 = debug_to_can_accel_watchpoint_condition
;
4706 current_target
.to_terminal_init
= debug_to_terminal_init
;
4707 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4708 current_target
.to_terminal_ours_for_output
4709 = debug_to_terminal_ours_for_output
;
4710 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4711 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4712 current_target
.to_terminal_info
= debug_to_terminal_info
;
4713 current_target
.to_load
= debug_to_load
;
4714 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4715 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4716 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4717 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4718 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4719 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4720 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4721 current_target
.to_has_exited
= debug_to_has_exited
;
4722 current_target
.to_can_run
= debug_to_can_run
;
4723 current_target
.to_stop
= debug_to_stop
;
4724 current_target
.to_rcmd
= debug_to_rcmd
;
4725 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4726 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4730 static char targ_desc
[] =
4731 "Names of targets and files being debugged.\nShows the entire \
4732 stack of targets currently in use (including the exec-file,\n\
4733 core-file, and process, if any), as well as the symbol file name.";
4736 do_monitor_command (char *cmd
,
4739 if ((current_target
.to_rcmd
4740 == (void (*) (char *, struct ui_file
*)) tcomplain
)
4741 || (current_target
.to_rcmd
== debug_to_rcmd
4742 && (debug_target
.to_rcmd
4743 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
4744 error (_("\"monitor\" command not supported by this target."));
4745 target_rcmd (cmd
, gdb_stdtarg
);
4748 /* Print the name of each layers of our target stack. */
4751 maintenance_print_target_stack (char *cmd
, int from_tty
)
4753 struct target_ops
*t
;
4755 printf_filtered (_("The current target stack is:\n"));
4757 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4759 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4763 /* Controls if async mode is permitted. */
4764 int target_async_permitted
= 0;
4766 /* The set command writes to this variable. If the inferior is
4767 executing, linux_nat_async_permitted is *not* updated. */
4768 static int target_async_permitted_1
= 0;
4771 set_target_async_command (char *args
, int from_tty
,
4772 struct cmd_list_element
*c
)
4774 if (have_live_inferiors ())
4776 target_async_permitted_1
= target_async_permitted
;
4777 error (_("Cannot change this setting while the inferior is running."));
4780 target_async_permitted
= target_async_permitted_1
;
4784 show_target_async_command (struct ui_file
*file
, int from_tty
,
4785 struct cmd_list_element
*c
,
4788 fprintf_filtered (file
,
4789 _("Controlling the inferior in "
4790 "asynchronous mode is %s.\n"), value
);
4793 /* Temporary copies of permission settings. */
4795 static int may_write_registers_1
= 1;
4796 static int may_write_memory_1
= 1;
4797 static int may_insert_breakpoints_1
= 1;
4798 static int may_insert_tracepoints_1
= 1;
4799 static int may_insert_fast_tracepoints_1
= 1;
4800 static int may_stop_1
= 1;
4802 /* Make the user-set values match the real values again. */
4805 update_target_permissions (void)
4807 may_write_registers_1
= may_write_registers
;
4808 may_write_memory_1
= may_write_memory
;
4809 may_insert_breakpoints_1
= may_insert_breakpoints
;
4810 may_insert_tracepoints_1
= may_insert_tracepoints
;
4811 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4812 may_stop_1
= may_stop
;
4815 /* The one function handles (most of) the permission flags in the same
4819 set_target_permissions (char *args
, int from_tty
,
4820 struct cmd_list_element
*c
)
4822 if (target_has_execution
)
4824 update_target_permissions ();
4825 error (_("Cannot change this setting while the inferior is running."));
4828 /* Make the real values match the user-changed values. */
4829 may_write_registers
= may_write_registers_1
;
4830 may_insert_breakpoints
= may_insert_breakpoints_1
;
4831 may_insert_tracepoints
= may_insert_tracepoints_1
;
4832 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4833 may_stop
= may_stop_1
;
4834 update_observer_mode ();
4837 /* Set memory write permission independently of observer mode. */
4840 set_write_memory_permission (char *args
, int from_tty
,
4841 struct cmd_list_element
*c
)
4843 /* Make the real values match the user-changed values. */
4844 may_write_memory
= may_write_memory_1
;
4845 update_observer_mode ();
4850 initialize_targets (void)
4852 init_dummy_target ();
4853 push_target (&dummy_target
);
4855 add_info ("target", target_info
, targ_desc
);
4856 add_info ("files", target_info
, targ_desc
);
4858 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
4859 Set target debugging."), _("\
4860 Show target debugging."), _("\
4861 When non-zero, target debugging is enabled. Higher numbers are more\n\
4862 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4866 &setdebuglist
, &showdebuglist
);
4868 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
4869 &trust_readonly
, _("\
4870 Set mode for reading from readonly sections."), _("\
4871 Show mode for reading from readonly sections."), _("\
4872 When this mode is on, memory reads from readonly sections (such as .text)\n\
4873 will be read from the object file instead of from the target. This will\n\
4874 result in significant performance improvement for remote targets."),
4876 show_trust_readonly
,
4877 &setlist
, &showlist
);
4879 add_com ("monitor", class_obscure
, do_monitor_command
,
4880 _("Send a command to the remote monitor (remote targets only)."));
4882 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
4883 _("Print the name of each layer of the internal target stack."),
4884 &maintenanceprintlist
);
4886 add_setshow_boolean_cmd ("target-async", no_class
,
4887 &target_async_permitted_1
, _("\
4888 Set whether gdb controls the inferior in asynchronous mode."), _("\
4889 Show whether gdb controls the inferior in asynchronous mode."), _("\
4890 Tells gdb whether to control the inferior in asynchronous mode."),
4891 set_target_async_command
,
4892 show_target_async_command
,
4896 add_setshow_boolean_cmd ("stack-cache", class_support
,
4897 &stack_cache_enabled_p_1
, _("\
4898 Set cache use for stack access."), _("\
4899 Show cache use for stack access."), _("\
4900 When on, use the data cache for all stack access, regardless of any\n\
4901 configured memory regions. This improves remote performance significantly.\n\
4902 By default, caching for stack access is on."),
4903 set_stack_cache_enabled_p
,
4904 show_stack_cache_enabled_p
,
4905 &setlist
, &showlist
);
4907 add_setshow_boolean_cmd ("may-write-registers", class_support
,
4908 &may_write_registers_1
, _("\
4909 Set permission to write into registers."), _("\
4910 Show permission to write into registers."), _("\
4911 When this permission is on, GDB may write into the target's registers.\n\
4912 Otherwise, any sort of write attempt will result in an error."),
4913 set_target_permissions
, NULL
,
4914 &setlist
, &showlist
);
4916 add_setshow_boolean_cmd ("may-write-memory", class_support
,
4917 &may_write_memory_1
, _("\
4918 Set permission to write into target memory."), _("\
4919 Show permission to write into target memory."), _("\
4920 When this permission is on, GDB may write into the target's memory.\n\
4921 Otherwise, any sort of write attempt will result in an error."),
4922 set_write_memory_permission
, NULL
,
4923 &setlist
, &showlist
);
4925 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
4926 &may_insert_breakpoints_1
, _("\
4927 Set permission to insert breakpoints in the target."), _("\
4928 Show permission to insert breakpoints in the target."), _("\
4929 When this permission is on, GDB may insert breakpoints in the program.\n\
4930 Otherwise, any sort of insertion attempt will result in an error."),
4931 set_target_permissions
, NULL
,
4932 &setlist
, &showlist
);
4934 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
4935 &may_insert_tracepoints_1
, _("\
4936 Set permission to insert tracepoints in the target."), _("\
4937 Show permission to insert tracepoints in the target."), _("\
4938 When this permission is on, GDB may insert tracepoints in the program.\n\
4939 Otherwise, any sort of insertion attempt will result in an error."),
4940 set_target_permissions
, NULL
,
4941 &setlist
, &showlist
);
4943 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
4944 &may_insert_fast_tracepoints_1
, _("\
4945 Set permission to insert fast tracepoints in the target."), _("\
4946 Show permission to insert fast tracepoints in the target."), _("\
4947 When this permission is on, GDB may insert fast tracepoints.\n\
4948 Otherwise, any sort of insertion attempt will result in an error."),
4949 set_target_permissions
, NULL
,
4950 &setlist
, &showlist
);
4952 add_setshow_boolean_cmd ("may-interrupt", class_support
,
4954 Set permission to interrupt or signal the target."), _("\
4955 Show permission to interrupt or signal the target."), _("\
4956 When this permission is on, GDB may interrupt/stop the target's execution.\n\
4957 Otherwise, any attempt to interrupt or stop will be ignored."),
4958 set_target_permissions
, NULL
,
4959 &setlist
, &showlist
);
4962 target_dcache
= dcache_init ();