1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2014 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/>. */
26 #include "target-dcache.h"
36 #include "gdb_assert.h"
38 #include "exceptions.h"
39 #include "target-descriptions.h"
40 #include "gdbthread.h"
43 #include "inline-frame.h"
44 #include "tracepoint.h"
45 #include "gdb/fileio.h"
48 static void target_info (char *, int);
50 static void default_terminal_info (const char *, int);
52 static int default_watchpoint_addr_within_range (struct target_ops
*,
53 CORE_ADDR
, CORE_ADDR
, int);
55 static int default_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
57 static void tcomplain (void) ATTRIBUTE_NORETURN
;
59 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
61 static int return_zero (void);
63 static int return_one (void);
65 static int return_minus_one (void);
67 void target_ignore (void);
69 static void target_command (char *, int);
71 static struct target_ops
*find_default_run_target (char *);
73 static target_xfer_partial_ftype default_xfer_partial
;
75 static target_xfer_partial_ftype current_xfer_partial
;
77 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
80 static void init_dummy_target (void);
82 static struct target_ops debug_target
;
84 static void debug_to_open (char *, int);
86 static void debug_to_prepare_to_store (struct regcache
*);
88 static void debug_to_files_info (struct target_ops
*);
90 static int debug_to_insert_breakpoint (struct gdbarch
*,
91 struct bp_target_info
*);
93 static int debug_to_remove_breakpoint (struct gdbarch
*,
94 struct bp_target_info
*);
96 static int debug_to_can_use_hw_breakpoint (int, int, int);
98 static int debug_to_insert_hw_breakpoint (struct gdbarch
*,
99 struct bp_target_info
*);
101 static int debug_to_remove_hw_breakpoint (struct gdbarch
*,
102 struct bp_target_info
*);
104 static int debug_to_insert_watchpoint (CORE_ADDR
, int, int,
105 struct expression
*);
107 static int debug_to_remove_watchpoint (CORE_ADDR
, int, int,
108 struct expression
*);
110 static int debug_to_stopped_by_watchpoint (void);
112 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
114 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
115 CORE_ADDR
, CORE_ADDR
, int);
117 static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
119 static int debug_to_can_accel_watchpoint_condition (CORE_ADDR
, int, int,
120 struct expression
*);
122 static void debug_to_terminal_init (void);
124 static void debug_to_terminal_inferior (void);
126 static void debug_to_terminal_ours_for_output (void);
128 static void debug_to_terminal_save_ours (void);
130 static void debug_to_terminal_ours (void);
132 static void debug_to_load (char *, int);
134 static int debug_to_can_run (void);
136 static void debug_to_stop (ptid_t
);
138 /* Pointer to array of target architecture structures; the size of the
139 array; the current index into the array; the allocated size of the
141 struct target_ops
**target_structs
;
142 unsigned target_struct_size
;
143 unsigned target_struct_allocsize
;
144 #define DEFAULT_ALLOCSIZE 10
146 /* The initial current target, so that there is always a semi-valid
149 static struct target_ops dummy_target
;
151 /* Top of target stack. */
153 static struct target_ops
*target_stack
;
155 /* The target structure we are currently using to talk to a process
156 or file or whatever "inferior" we have. */
158 struct target_ops current_target
;
160 /* Command list for target. */
162 static struct cmd_list_element
*targetlist
= NULL
;
164 /* Nonzero if we should trust readonly sections from the
165 executable when reading memory. */
167 static int trust_readonly
= 0;
169 /* Nonzero if we should show true memory content including
170 memory breakpoint inserted by gdb. */
172 static int show_memory_breakpoints
= 0;
174 /* These globals control whether GDB attempts to perform these
175 operations; they are useful for targets that need to prevent
176 inadvertant disruption, such as in non-stop mode. */
178 int may_write_registers
= 1;
180 int may_write_memory
= 1;
182 int may_insert_breakpoints
= 1;
184 int may_insert_tracepoints
= 1;
186 int may_insert_fast_tracepoints
= 1;
190 /* Non-zero if we want to see trace of target level stuff. */
192 static unsigned int targetdebug
= 0;
194 show_targetdebug (struct ui_file
*file
, int from_tty
,
195 struct cmd_list_element
*c
, const char *value
)
197 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
200 static void setup_target_debug (void);
202 /* The user just typed 'target' without the name of a target. */
205 target_command (char *arg
, int from_tty
)
207 fputs_filtered ("Argument required (target name). Try `help target'\n",
211 /* Default target_has_* methods for process_stratum targets. */
214 default_child_has_all_memory (struct target_ops
*ops
)
216 /* If no inferior selected, then we can't read memory here. */
217 if (ptid_equal (inferior_ptid
, null_ptid
))
224 default_child_has_memory (struct target_ops
*ops
)
226 /* If no inferior selected, then we can't read memory here. */
227 if (ptid_equal (inferior_ptid
, null_ptid
))
234 default_child_has_stack (struct target_ops
*ops
)
236 /* If no inferior selected, there's no stack. */
237 if (ptid_equal (inferior_ptid
, null_ptid
))
244 default_child_has_registers (struct target_ops
*ops
)
246 /* Can't read registers from no inferior. */
247 if (ptid_equal (inferior_ptid
, null_ptid
))
254 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
256 /* If there's no thread selected, then we can't make it run through
258 if (ptid_equal (the_ptid
, null_ptid
))
266 target_has_all_memory_1 (void)
268 struct target_ops
*t
;
270 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
271 if (t
->to_has_all_memory (t
))
278 target_has_memory_1 (void)
280 struct target_ops
*t
;
282 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
283 if (t
->to_has_memory (t
))
290 target_has_stack_1 (void)
292 struct target_ops
*t
;
294 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
295 if (t
->to_has_stack (t
))
302 target_has_registers_1 (void)
304 struct target_ops
*t
;
306 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
307 if (t
->to_has_registers (t
))
314 target_has_execution_1 (ptid_t the_ptid
)
316 struct target_ops
*t
;
318 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
319 if (t
->to_has_execution (t
, the_ptid
))
326 target_has_execution_current (void)
328 return target_has_execution_1 (inferior_ptid
);
331 /* Complete initialization of T. This ensures that various fields in
332 T are set, if needed by the target implementation. */
335 complete_target_initialization (struct target_ops
*t
)
337 /* Provide default values for all "must have" methods. */
338 if (t
->to_xfer_partial
== NULL
)
339 t
->to_xfer_partial
= default_xfer_partial
;
341 if (t
->to_has_all_memory
== NULL
)
342 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
344 if (t
->to_has_memory
== NULL
)
345 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
347 if (t
->to_has_stack
== NULL
)
348 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
350 if (t
->to_has_registers
== NULL
)
351 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
353 if (t
->to_has_execution
== NULL
)
354 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
357 /* Add possible target architecture T to the list and add a new
358 command 'target T->to_shortname'. Set COMPLETER as the command's
359 completer if not NULL. */
362 add_target_with_completer (struct target_ops
*t
,
363 completer_ftype
*completer
)
365 struct cmd_list_element
*c
;
367 complete_target_initialization (t
);
371 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
372 target_structs
= (struct target_ops
**) xmalloc
373 (target_struct_allocsize
* sizeof (*target_structs
));
375 if (target_struct_size
>= target_struct_allocsize
)
377 target_struct_allocsize
*= 2;
378 target_structs
= (struct target_ops
**)
379 xrealloc ((char *) target_structs
,
380 target_struct_allocsize
* sizeof (*target_structs
));
382 target_structs
[target_struct_size
++] = t
;
384 if (targetlist
== NULL
)
385 add_prefix_cmd ("target", class_run
, target_command
, _("\
386 Connect to a target machine or process.\n\
387 The first argument is the type or protocol of the target machine.\n\
388 Remaining arguments are interpreted by the target protocol. For more\n\
389 information on the arguments for a particular protocol, type\n\
390 `help target ' followed by the protocol name."),
391 &targetlist
, "target ", 0, &cmdlist
);
392 c
= add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
,
394 if (completer
!= NULL
)
395 set_cmd_completer (c
, completer
);
398 /* Add a possible target architecture to the list. */
401 add_target (struct target_ops
*t
)
403 add_target_with_completer (t
, NULL
);
409 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
411 struct cmd_list_element
*c
;
414 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
416 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
417 alt
= xstrprintf ("target %s", t
->to_shortname
);
418 deprecate_cmd (c
, alt
);
431 struct target_ops
*t
;
433 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
434 if (t
->to_kill
!= NULL
)
437 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
447 target_load (char *arg
, int from_tty
)
449 target_dcache_invalidate ();
450 (*current_target
.to_load
) (arg
, from_tty
);
454 target_create_inferior (char *exec_file
, char *args
,
455 char **env
, int from_tty
)
457 struct target_ops
*t
;
459 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
461 if (t
->to_create_inferior
!= NULL
)
463 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
465 fprintf_unfiltered (gdb_stdlog
,
466 "target_create_inferior (%s, %s, xxx, %d)\n",
467 exec_file
, args
, from_tty
);
472 internal_error (__FILE__
, __LINE__
,
473 _("could not find a target to create inferior"));
477 target_terminal_inferior (void)
479 /* A background resume (``run&'') should leave GDB in control of the
480 terminal. Use target_can_async_p, not target_is_async_p, since at
481 this point the target is not async yet. However, if sync_execution
482 is not set, we know it will become async prior to resume. */
483 if (target_can_async_p () && !sync_execution
)
486 /* If GDB is resuming the inferior in the foreground, install
487 inferior's terminal modes. */
488 (*current_target
.to_terminal_inferior
) ();
492 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
493 struct target_ops
*t
)
495 errno
= EIO
; /* Can't read/write this location. */
496 return 0; /* No bytes handled. */
502 error (_("You can't do that when your target is `%s'"),
503 current_target
.to_shortname
);
509 error (_("You can't do that without a process to debug."));
513 default_terminal_info (const char *args
, int from_tty
)
515 printf_unfiltered (_("No saved terminal information.\n"));
518 /* A default implementation for the to_get_ada_task_ptid target method.
520 This function builds the PTID by using both LWP and TID as part of
521 the PTID lwp and tid elements. The pid used is the pid of the
525 default_get_ada_task_ptid (long lwp
, long tid
)
527 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
530 static enum exec_direction_kind
531 default_execution_direction (void)
533 if (!target_can_execute_reverse
)
535 else if (!target_can_async_p ())
538 gdb_assert_not_reached ("\
539 to_execution_direction must be implemented for reverse async");
542 /* Go through the target stack from top to bottom, copying over zero
543 entries in current_target, then filling in still empty entries. In
544 effect, we are doing class inheritance through the pushed target
547 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
548 is currently implemented, is that it discards any knowledge of
549 which target an inherited method originally belonged to.
550 Consequently, new new target methods should instead explicitly and
551 locally search the target stack for the target that can handle the
555 update_current_target (void)
557 struct target_ops
*t
;
559 /* First, reset current's contents. */
560 memset (¤t_target
, 0, sizeof (current_target
));
562 #define INHERIT(FIELD, TARGET) \
563 if (!current_target.FIELD) \
564 current_target.FIELD = (TARGET)->FIELD
566 for (t
= target_stack
; t
; t
= t
->beneath
)
568 INHERIT (to_shortname
, t
);
569 INHERIT (to_longname
, t
);
571 /* Do not inherit to_open. */
572 /* Do not inherit to_close. */
573 /* Do not inherit to_attach. */
574 INHERIT (to_post_attach
, t
);
575 INHERIT (to_attach_no_wait
, t
);
576 /* Do not inherit to_detach. */
577 /* Do not inherit to_disconnect. */
578 /* Do not inherit to_resume. */
579 /* Do not inherit to_wait. */
580 /* Do not inherit to_fetch_registers. */
581 /* Do not inherit to_store_registers. */
582 INHERIT (to_prepare_to_store
, t
);
583 INHERIT (deprecated_xfer_memory
, t
);
584 INHERIT (to_files_info
, t
);
585 INHERIT (to_insert_breakpoint
, t
);
586 INHERIT (to_remove_breakpoint
, t
);
587 INHERIT (to_can_use_hw_breakpoint
, t
);
588 INHERIT (to_insert_hw_breakpoint
, t
);
589 INHERIT (to_remove_hw_breakpoint
, t
);
590 /* Do not inherit to_ranged_break_num_registers. */
591 INHERIT (to_insert_watchpoint
, t
);
592 INHERIT (to_remove_watchpoint
, t
);
593 /* Do not inherit to_insert_mask_watchpoint. */
594 /* Do not inherit to_remove_mask_watchpoint. */
595 INHERIT (to_stopped_data_address
, t
);
596 INHERIT (to_have_steppable_watchpoint
, t
);
597 INHERIT (to_have_continuable_watchpoint
, t
);
598 INHERIT (to_stopped_by_watchpoint
, t
);
599 INHERIT (to_watchpoint_addr_within_range
, t
);
600 INHERIT (to_region_ok_for_hw_watchpoint
, t
);
601 INHERIT (to_can_accel_watchpoint_condition
, t
);
602 /* Do not inherit to_masked_watch_num_registers. */
603 INHERIT (to_terminal_init
, t
);
604 INHERIT (to_terminal_inferior
, t
);
605 INHERIT (to_terminal_ours_for_output
, t
);
606 INHERIT (to_terminal_ours
, t
);
607 INHERIT (to_terminal_save_ours
, t
);
608 INHERIT (to_terminal_info
, t
);
609 /* Do not inherit to_kill. */
610 INHERIT (to_load
, t
);
611 /* Do no inherit to_create_inferior. */
612 INHERIT (to_post_startup_inferior
, t
);
613 INHERIT (to_insert_fork_catchpoint
, t
);
614 INHERIT (to_remove_fork_catchpoint
, t
);
615 INHERIT (to_insert_vfork_catchpoint
, t
);
616 INHERIT (to_remove_vfork_catchpoint
, t
);
617 /* Do not inherit to_follow_fork. */
618 INHERIT (to_insert_exec_catchpoint
, t
);
619 INHERIT (to_remove_exec_catchpoint
, t
);
620 INHERIT (to_set_syscall_catchpoint
, t
);
621 INHERIT (to_has_exited
, t
);
622 /* Do not inherit to_mourn_inferior. */
623 INHERIT (to_can_run
, t
);
624 /* Do not inherit to_pass_signals. */
625 /* Do not inherit to_program_signals. */
626 /* Do not inherit to_thread_alive. */
627 /* Do not inherit to_find_new_threads. */
628 /* Do not inherit to_pid_to_str. */
629 INHERIT (to_extra_thread_info
, t
);
630 INHERIT (to_thread_name
, t
);
631 INHERIT (to_stop
, t
);
632 /* Do not inherit to_xfer_partial. */
633 INHERIT (to_rcmd
, t
);
634 INHERIT (to_pid_to_exec_file
, t
);
635 INHERIT (to_log_command
, t
);
636 INHERIT (to_stratum
, t
);
637 /* Do not inherit to_has_all_memory. */
638 /* Do not inherit to_has_memory. */
639 /* Do not inherit to_has_stack. */
640 /* Do not inherit to_has_registers. */
641 /* Do not inherit to_has_execution. */
642 INHERIT (to_has_thread_control
, t
);
643 INHERIT (to_can_async_p
, t
);
644 INHERIT (to_is_async_p
, t
);
645 INHERIT (to_async
, t
);
646 INHERIT (to_find_memory_regions
, t
);
647 INHERIT (to_make_corefile_notes
, t
);
648 INHERIT (to_get_bookmark
, t
);
649 INHERIT (to_goto_bookmark
, t
);
650 /* Do not inherit to_get_thread_local_address. */
651 INHERIT (to_can_execute_reverse
, t
);
652 INHERIT (to_execution_direction
, t
);
653 INHERIT (to_thread_architecture
, t
);
654 /* Do not inherit to_read_description. */
655 INHERIT (to_get_ada_task_ptid
, t
);
656 /* Do not inherit to_search_memory. */
657 INHERIT (to_supports_multi_process
, t
);
658 INHERIT (to_supports_enable_disable_tracepoint
, t
);
659 INHERIT (to_supports_string_tracing
, t
);
660 INHERIT (to_trace_init
, t
);
661 INHERIT (to_download_tracepoint
, t
);
662 INHERIT (to_can_download_tracepoint
, t
);
663 INHERIT (to_download_trace_state_variable
, t
);
664 INHERIT (to_enable_tracepoint
, t
);
665 INHERIT (to_disable_tracepoint
, t
);
666 INHERIT (to_trace_set_readonly_regions
, t
);
667 INHERIT (to_trace_start
, t
);
668 INHERIT (to_get_trace_status
, t
);
669 INHERIT (to_get_tracepoint_status
, t
);
670 INHERIT (to_trace_stop
, t
);
671 INHERIT (to_trace_find
, t
);
672 INHERIT (to_get_trace_state_variable_value
, t
);
673 INHERIT (to_save_trace_data
, t
);
674 INHERIT (to_upload_tracepoints
, t
);
675 INHERIT (to_upload_trace_state_variables
, t
);
676 INHERIT (to_get_raw_trace_data
, t
);
677 INHERIT (to_get_min_fast_tracepoint_insn_len
, t
);
678 INHERIT (to_set_disconnected_tracing
, t
);
679 INHERIT (to_set_circular_trace_buffer
, t
);
680 INHERIT (to_set_trace_buffer_size
, t
);
681 INHERIT (to_set_trace_notes
, t
);
682 INHERIT (to_get_tib_address
, t
);
683 INHERIT (to_set_permissions
, t
);
684 INHERIT (to_static_tracepoint_marker_at
, t
);
685 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
686 INHERIT (to_traceframe_info
, t
);
687 INHERIT (to_use_agent
, t
);
688 INHERIT (to_can_use_agent
, t
);
689 INHERIT (to_augmented_libraries_svr4_read
, t
);
690 INHERIT (to_magic
, t
);
691 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
692 INHERIT (to_can_run_breakpoint_commands
, t
);
693 /* Do not inherit to_memory_map. */
694 /* Do not inherit to_flash_erase. */
695 /* Do not inherit to_flash_done. */
699 /* Clean up a target struct so it no longer has any zero pointers in
700 it. Some entries are defaulted to a method that print an error,
701 others are hard-wired to a standard recursive default. */
703 #define de_fault(field, value) \
704 if (!current_target.field) \
705 current_target.field = value
708 (void (*) (char *, int))
713 de_fault (to_post_attach
,
716 de_fault (to_prepare_to_store
,
717 (void (*) (struct regcache
*))
719 de_fault (deprecated_xfer_memory
,
720 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
721 struct mem_attrib
*, struct target_ops
*))
723 de_fault (to_files_info
,
724 (void (*) (struct target_ops
*))
726 de_fault (to_insert_breakpoint
,
727 memory_insert_breakpoint
);
728 de_fault (to_remove_breakpoint
,
729 memory_remove_breakpoint
);
730 de_fault (to_can_use_hw_breakpoint
,
731 (int (*) (int, int, int))
733 de_fault (to_insert_hw_breakpoint
,
734 (int (*) (struct gdbarch
*, struct bp_target_info
*))
736 de_fault (to_remove_hw_breakpoint
,
737 (int (*) (struct gdbarch
*, struct bp_target_info
*))
739 de_fault (to_insert_watchpoint
,
740 (int (*) (CORE_ADDR
, int, int, struct expression
*))
742 de_fault (to_remove_watchpoint
,
743 (int (*) (CORE_ADDR
, int, int, struct expression
*))
745 de_fault (to_stopped_by_watchpoint
,
748 de_fault (to_stopped_data_address
,
749 (int (*) (struct target_ops
*, CORE_ADDR
*))
751 de_fault (to_watchpoint_addr_within_range
,
752 default_watchpoint_addr_within_range
);
753 de_fault (to_region_ok_for_hw_watchpoint
,
754 default_region_ok_for_hw_watchpoint
);
755 de_fault (to_can_accel_watchpoint_condition
,
756 (int (*) (CORE_ADDR
, int, int, struct expression
*))
758 de_fault (to_terminal_init
,
761 de_fault (to_terminal_inferior
,
764 de_fault (to_terminal_ours_for_output
,
767 de_fault (to_terminal_ours
,
770 de_fault (to_terminal_save_ours
,
773 de_fault (to_terminal_info
,
774 default_terminal_info
);
776 (void (*) (char *, int))
778 de_fault (to_post_startup_inferior
,
781 de_fault (to_insert_fork_catchpoint
,
784 de_fault (to_remove_fork_catchpoint
,
787 de_fault (to_insert_vfork_catchpoint
,
790 de_fault (to_remove_vfork_catchpoint
,
793 de_fault (to_insert_exec_catchpoint
,
796 de_fault (to_remove_exec_catchpoint
,
799 de_fault (to_set_syscall_catchpoint
,
800 (int (*) (int, int, int, int, int *))
802 de_fault (to_has_exited
,
803 (int (*) (int, int, int *))
805 de_fault (to_can_run
,
807 de_fault (to_extra_thread_info
,
808 (char *(*) (struct thread_info
*))
810 de_fault (to_thread_name
,
811 (char *(*) (struct thread_info
*))
816 current_target
.to_xfer_partial
= current_xfer_partial
;
818 (void (*) (char *, struct ui_file
*))
820 de_fault (to_pid_to_exec_file
,
824 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
826 de_fault (to_thread_architecture
,
827 default_thread_architecture
);
828 current_target
.to_read_description
= NULL
;
829 de_fault (to_get_ada_task_ptid
,
830 (ptid_t (*) (long, long))
831 default_get_ada_task_ptid
);
832 de_fault (to_supports_multi_process
,
835 de_fault (to_supports_enable_disable_tracepoint
,
838 de_fault (to_supports_string_tracing
,
841 de_fault (to_trace_init
,
844 de_fault (to_download_tracepoint
,
845 (void (*) (struct bp_location
*))
847 de_fault (to_can_download_tracepoint
,
850 de_fault (to_download_trace_state_variable
,
851 (void (*) (struct trace_state_variable
*))
853 de_fault (to_enable_tracepoint
,
854 (void (*) (struct bp_location
*))
856 de_fault (to_disable_tracepoint
,
857 (void (*) (struct bp_location
*))
859 de_fault (to_trace_set_readonly_regions
,
862 de_fault (to_trace_start
,
865 de_fault (to_get_trace_status
,
866 (int (*) (struct trace_status
*))
868 de_fault (to_get_tracepoint_status
,
869 (void (*) (struct breakpoint
*, struct uploaded_tp
*))
871 de_fault (to_trace_stop
,
874 de_fault (to_trace_find
,
875 (int (*) (enum trace_find_type
, int, CORE_ADDR
, CORE_ADDR
, int *))
877 de_fault (to_get_trace_state_variable_value
,
878 (int (*) (int, LONGEST
*))
880 de_fault (to_save_trace_data
,
881 (int (*) (const char *))
883 de_fault (to_upload_tracepoints
,
884 (int (*) (struct uploaded_tp
**))
886 de_fault (to_upload_trace_state_variables
,
887 (int (*) (struct uploaded_tsv
**))
889 de_fault (to_get_raw_trace_data
,
890 (LONGEST (*) (gdb_byte
*, ULONGEST
, LONGEST
))
892 de_fault (to_get_min_fast_tracepoint_insn_len
,
895 de_fault (to_set_disconnected_tracing
,
898 de_fault (to_set_circular_trace_buffer
,
901 de_fault (to_set_trace_buffer_size
,
904 de_fault (to_set_trace_notes
,
905 (int (*) (const char *, const char *, const char *))
907 de_fault (to_get_tib_address
,
908 (int (*) (ptid_t
, CORE_ADDR
*))
910 de_fault (to_set_permissions
,
913 de_fault (to_static_tracepoint_marker_at
,
914 (int (*) (CORE_ADDR
, struct static_tracepoint_marker
*))
916 de_fault (to_static_tracepoint_markers_by_strid
,
917 (VEC(static_tracepoint_marker_p
) * (*) (const char *))
919 de_fault (to_traceframe_info
,
920 (struct traceframe_info
* (*) (void))
922 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
925 de_fault (to_can_run_breakpoint_commands
,
928 de_fault (to_use_agent
,
931 de_fault (to_can_use_agent
,
934 de_fault (to_augmented_libraries_svr4_read
,
937 de_fault (to_execution_direction
, default_execution_direction
);
941 /* Finally, position the target-stack beneath the squashed
942 "current_target". That way code looking for a non-inherited
943 target method can quickly and simply find it. */
944 current_target
.beneath
= target_stack
;
947 setup_target_debug ();
950 /* Push a new target type into the stack of the existing target accessors,
951 possibly superseding some of the existing accessors.
953 Rather than allow an empty stack, we always have the dummy target at
954 the bottom stratum, so we can call the function vectors without
958 push_target (struct target_ops
*t
)
960 struct target_ops
**cur
;
962 /* Check magic number. If wrong, it probably means someone changed
963 the struct definition, but not all the places that initialize one. */
964 if (t
->to_magic
!= OPS_MAGIC
)
966 fprintf_unfiltered (gdb_stderr
,
967 "Magic number of %s target struct wrong\n",
969 internal_error (__FILE__
, __LINE__
,
970 _("failed internal consistency check"));
973 /* Find the proper stratum to install this target in. */
974 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
976 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
980 /* If there's already targets at this stratum, remove them. */
981 /* FIXME: cagney/2003-10-15: I think this should be popping all
982 targets to CUR, and not just those at this stratum level. */
983 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
985 /* There's already something at this stratum level. Close it,
986 and un-hook it from the stack. */
987 struct target_ops
*tmp
= (*cur
);
989 (*cur
) = (*cur
)->beneath
;
994 /* We have removed all targets in our stratum, now add the new one. */
998 update_current_target ();
1001 /* Remove a target_ops vector from the stack, wherever it may be.
1002 Return how many times it was removed (0 or 1). */
1005 unpush_target (struct target_ops
*t
)
1007 struct target_ops
**cur
;
1008 struct target_ops
*tmp
;
1010 if (t
->to_stratum
== dummy_stratum
)
1011 internal_error (__FILE__
, __LINE__
,
1012 _("Attempt to unpush the dummy target"));
1014 /* Look for the specified target. Note that we assume that a target
1015 can only occur once in the target stack. */
1017 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1023 /* If we don't find target_ops, quit. Only open targets should be
1028 /* Unchain the target. */
1030 (*cur
) = (*cur
)->beneath
;
1031 tmp
->beneath
= NULL
;
1033 update_current_target ();
1035 /* Finally close the target. Note we do this after unchaining, so
1036 any target method calls from within the target_close
1037 implementation don't end up in T anymore. */
1044 pop_all_targets_above (enum strata above_stratum
)
1046 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
1048 if (!unpush_target (target_stack
))
1050 fprintf_unfiltered (gdb_stderr
,
1051 "pop_all_targets couldn't find target %s\n",
1052 target_stack
->to_shortname
);
1053 internal_error (__FILE__
, __LINE__
,
1054 _("failed internal consistency check"));
1061 pop_all_targets (void)
1063 pop_all_targets_above (dummy_stratum
);
1066 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
1069 target_is_pushed (struct target_ops
*t
)
1071 struct target_ops
**cur
;
1073 /* Check magic number. If wrong, it probably means someone changed
1074 the struct definition, but not all the places that initialize one. */
1075 if (t
->to_magic
!= OPS_MAGIC
)
1077 fprintf_unfiltered (gdb_stderr
,
1078 "Magic number of %s target struct wrong\n",
1080 internal_error (__FILE__
, __LINE__
,
1081 _("failed internal consistency check"));
1084 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1091 /* Using the objfile specified in OBJFILE, find the address for the
1092 current thread's thread-local storage with offset OFFSET. */
1094 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1096 volatile CORE_ADDR addr
= 0;
1097 struct target_ops
*target
;
1099 for (target
= current_target
.beneath
;
1101 target
= target
->beneath
)
1103 if (target
->to_get_thread_local_address
!= NULL
)
1108 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
1110 ptid_t ptid
= inferior_ptid
;
1111 volatile struct gdb_exception ex
;
1113 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1117 /* Fetch the load module address for this objfile. */
1118 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1120 /* If it's 0, throw the appropriate exception. */
1122 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1123 _("TLS load module not found"));
1125 addr
= target
->to_get_thread_local_address (target
, ptid
,
1128 /* If an error occurred, print TLS related messages here. Otherwise,
1129 throw the error to some higher catcher. */
1132 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1136 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1137 error (_("Cannot find thread-local variables "
1138 "in this thread library."));
1140 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1141 if (objfile_is_library
)
1142 error (_("Cannot find shared library `%s' in dynamic"
1143 " linker's load module list"), objfile_name (objfile
));
1145 error (_("Cannot find executable file `%s' in dynamic"
1146 " linker's load module list"), objfile_name (objfile
));
1148 case TLS_NOT_ALLOCATED_YET_ERROR
:
1149 if (objfile_is_library
)
1150 error (_("The inferior has not yet allocated storage for"
1151 " thread-local variables in\n"
1152 "the shared library `%s'\n"
1154 objfile_name (objfile
), target_pid_to_str (ptid
));
1156 error (_("The inferior has not yet allocated storage for"
1157 " thread-local variables in\n"
1158 "the executable `%s'\n"
1160 objfile_name (objfile
), target_pid_to_str (ptid
));
1162 case TLS_GENERIC_ERROR
:
1163 if (objfile_is_library
)
1164 error (_("Cannot find thread-local storage for %s, "
1165 "shared library %s:\n%s"),
1166 target_pid_to_str (ptid
),
1167 objfile_name (objfile
), ex
.message
);
1169 error (_("Cannot find thread-local storage for %s, "
1170 "executable file %s:\n%s"),
1171 target_pid_to_str (ptid
),
1172 objfile_name (objfile
), ex
.message
);
1175 throw_exception (ex
);
1180 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1181 TLS is an ABI-specific thing. But we don't do that yet. */
1183 error (_("Cannot find thread-local variables on this target"));
1189 target_xfer_error_to_string (enum target_xfer_error err
)
1191 #define CASE(X) case X: return #X
1194 CASE(TARGET_XFER_E_IO
);
1195 CASE(TARGET_XFER_E_UNAVAILABLE
);
1204 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1206 /* target_read_string -- read a null terminated string, up to LEN bytes,
1207 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1208 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1209 is responsible for freeing it. Return the number of bytes successfully
1213 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1215 int tlen
, offset
, i
;
1219 int buffer_allocated
;
1221 unsigned int nbytes_read
= 0;
1223 gdb_assert (string
);
1225 /* Small for testing. */
1226 buffer_allocated
= 4;
1227 buffer
= xmalloc (buffer_allocated
);
1232 tlen
= MIN (len
, 4 - (memaddr
& 3));
1233 offset
= memaddr
& 3;
1235 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1238 /* The transfer request might have crossed the boundary to an
1239 unallocated region of memory. Retry the transfer, requesting
1243 errcode
= target_read_memory (memaddr
, buf
, 1);
1248 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1252 bytes
= bufptr
- buffer
;
1253 buffer_allocated
*= 2;
1254 buffer
= xrealloc (buffer
, buffer_allocated
);
1255 bufptr
= buffer
+ bytes
;
1258 for (i
= 0; i
< tlen
; i
++)
1260 *bufptr
++ = buf
[i
+ offset
];
1261 if (buf
[i
+ offset
] == '\000')
1263 nbytes_read
+= i
+ 1;
1270 nbytes_read
+= tlen
;
1279 struct target_section_table
*
1280 target_get_section_table (struct target_ops
*target
)
1282 struct target_ops
*t
;
1285 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1287 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1288 if (t
->to_get_section_table
!= NULL
)
1289 return (*t
->to_get_section_table
) (t
);
1294 /* Find a section containing ADDR. */
1296 struct target_section
*
1297 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1299 struct target_section_table
*table
= target_get_section_table (target
);
1300 struct target_section
*secp
;
1305 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1307 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1313 /* Read memory from the live target, even if currently inspecting a
1314 traceframe. The return is the same as that of target_read. */
1317 target_read_live_memory (enum target_object object
,
1318 ULONGEST memaddr
, gdb_byte
*myaddr
, LONGEST len
)
1321 struct cleanup
*cleanup
;
1323 /* Switch momentarily out of tfind mode so to access live memory.
1324 Note that this must not clear global state, such as the frame
1325 cache, which must still remain valid for the previous traceframe.
1326 We may be _building_ the frame cache at this point. */
1327 cleanup
= make_cleanup_restore_traceframe_number ();
1328 set_traceframe_number (-1);
1330 ret
= target_read (current_target
.beneath
, object
, NULL
,
1331 myaddr
, memaddr
, len
);
1333 do_cleanups (cleanup
);
1337 /* Using the set of read-only target sections of OPS, read live
1338 read-only memory. Note that the actual reads start from the
1339 top-most target again.
1341 For interface/parameters/return description see target.h,
1345 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1346 enum target_object object
,
1347 gdb_byte
*readbuf
, ULONGEST memaddr
,
1350 struct target_section
*secp
;
1351 struct target_section_table
*table
;
1353 secp
= target_section_by_addr (ops
, memaddr
);
1355 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1356 secp
->the_bfd_section
)
1359 struct target_section
*p
;
1360 ULONGEST memend
= memaddr
+ len
;
1362 table
= target_get_section_table (ops
);
1364 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1366 if (memaddr
>= p
->addr
)
1368 if (memend
<= p
->endaddr
)
1370 /* Entire transfer is within this section. */
1371 return target_read_live_memory (object
, memaddr
,
1374 else if (memaddr
>= p
->endaddr
)
1376 /* This section ends before the transfer starts. */
1381 /* This section overlaps the transfer. Just do half. */
1382 len
= p
->endaddr
- memaddr
;
1383 return target_read_live_memory (object
, memaddr
,
1393 /* Read memory from more than one valid target. A core file, for
1394 instance, could have some of memory but delegate other bits to
1395 the target below it. So, we must manually try all targets. */
1398 raw_memory_xfer_partial (struct target_ops
*ops
, void *readbuf
,
1399 const void *writebuf
, ULONGEST memaddr
, LONGEST len
)
1405 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1406 readbuf
, writebuf
, memaddr
, len
);
1410 /* We want to continue past core files to executables, but not
1411 past a running target's memory. */
1412 if (ops
->to_has_all_memory (ops
))
1417 while (ops
!= NULL
);
1422 /* Perform a partial memory transfer.
1423 For docs see target.h, to_xfer_partial. */
1426 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1427 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1432 struct mem_region
*region
;
1433 struct inferior
*inf
;
1435 /* For accesses to unmapped overlay sections, read directly from
1436 files. Must do this first, as MEMADDR may need adjustment. */
1437 if (readbuf
!= NULL
&& overlay_debugging
)
1439 struct obj_section
*section
= find_pc_overlay (memaddr
);
1441 if (pc_in_unmapped_range (memaddr
, section
))
1443 struct target_section_table
*table
1444 = target_get_section_table (ops
);
1445 const char *section_name
= section
->the_bfd_section
->name
;
1447 memaddr
= overlay_mapped_address (memaddr
, section
);
1448 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1451 table
->sections_end
,
1456 /* Try the executable files, if "trust-readonly-sections" is set. */
1457 if (readbuf
!= NULL
&& trust_readonly
)
1459 struct target_section
*secp
;
1460 struct target_section_table
*table
;
1462 secp
= target_section_by_addr (ops
, memaddr
);
1464 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1465 secp
->the_bfd_section
)
1468 table
= target_get_section_table (ops
);
1469 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1472 table
->sections_end
,
1477 /* If reading unavailable memory in the context of traceframes, and
1478 this address falls within a read-only section, fallback to
1479 reading from live memory. */
1480 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1482 VEC(mem_range_s
) *available
;
1484 /* If we fail to get the set of available memory, then the
1485 target does not support querying traceframe info, and so we
1486 attempt reading from the traceframe anyway (assuming the
1487 target implements the old QTro packet then). */
1488 if (traceframe_available_memory (&available
, memaddr
, len
))
1490 struct cleanup
*old_chain
;
1492 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1494 if (VEC_empty (mem_range_s
, available
)
1495 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1497 /* Don't read into the traceframe's available
1499 if (!VEC_empty (mem_range_s
, available
))
1501 LONGEST oldlen
= len
;
1503 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1504 gdb_assert (len
<= oldlen
);
1507 do_cleanups (old_chain
);
1509 /* This goes through the topmost target again. */
1510 res
= memory_xfer_live_readonly_partial (ops
, object
,
1511 readbuf
, memaddr
, len
);
1515 /* No use trying further, we know some memory starting
1516 at MEMADDR isn't available. */
1517 return TARGET_XFER_E_UNAVAILABLE
;
1520 /* Don't try to read more than how much is available, in
1521 case the target implements the deprecated QTro packet to
1522 cater for older GDBs (the target's knowledge of read-only
1523 sections may be outdated by now). */
1524 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1526 do_cleanups (old_chain
);
1530 /* Try GDB's internal data cache. */
1531 region
= lookup_mem_region (memaddr
);
1532 /* region->hi == 0 means there's no upper bound. */
1533 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1536 reg_len
= region
->hi
- memaddr
;
1538 switch (region
->attrib
.mode
)
1541 if (writebuf
!= NULL
)
1546 if (readbuf
!= NULL
)
1551 /* We only support writing to flash during "load" for now. */
1552 if (writebuf
!= NULL
)
1553 error (_("Writing to flash memory forbidden in this context"));
1560 if (!ptid_equal (inferior_ptid
, null_ptid
))
1561 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1566 /* The dcache reads whole cache lines; that doesn't play well
1567 with reading from a trace buffer, because reading outside of
1568 the collected memory range fails. */
1569 && get_traceframe_number () == -1
1570 && (region
->attrib
.cache
1571 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1572 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1574 DCACHE
*dcache
= target_dcache_get_or_init ();
1576 if (readbuf
!= NULL
)
1577 res
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1579 /* FIXME drow/2006-08-09: If we're going to preserve const
1580 correctness dcache_xfer_memory should take readbuf and
1582 res
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1590 /* If none of those methods found the memory we wanted, fall back
1591 to a target partial transfer. Normally a single call to
1592 to_xfer_partial is enough; if it doesn't recognize an object
1593 it will call the to_xfer_partial of the next target down.
1594 But for memory this won't do. Memory is the only target
1595 object which can be read from more than one valid target. */
1596 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
);
1598 /* Make sure the cache gets updated no matter what - if we are writing
1599 to the stack. Even if this write is not tagged as such, we still need
1600 to update the cache. */
1605 && target_dcache_init_p ()
1606 && !region
->attrib
.cache
1607 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1608 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1610 DCACHE
*dcache
= target_dcache_get ();
1612 dcache_update (dcache
, memaddr
, (void *) writebuf
, res
);
1615 /* If we still haven't got anything, return the last error. We
1620 /* Perform a partial memory transfer. For docs see target.h,
1624 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1625 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1630 /* Zero length requests are ok and require no work. */
1634 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1635 breakpoint insns, thus hiding out from higher layers whether
1636 there are software breakpoints inserted in the code stream. */
1637 if (readbuf
!= NULL
)
1639 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
);
1641 if (res
> 0 && !show_memory_breakpoints
)
1642 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1647 struct cleanup
*old_chain
;
1649 /* A large write request is likely to be partially satisfied
1650 by memory_xfer_partial_1. We will continually malloc
1651 and free a copy of the entire write request for breakpoint
1652 shadow handling even though we only end up writing a small
1653 subset of it. Cap writes to 4KB to mitigate this. */
1654 len
= min (4096, len
);
1656 buf
= xmalloc (len
);
1657 old_chain
= make_cleanup (xfree
, buf
);
1658 memcpy (buf
, writebuf
, len
);
1660 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1661 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
);
1663 do_cleanups (old_chain
);
1670 restore_show_memory_breakpoints (void *arg
)
1672 show_memory_breakpoints
= (uintptr_t) arg
;
1676 make_show_memory_breakpoints_cleanup (int show
)
1678 int current
= show_memory_breakpoints
;
1680 show_memory_breakpoints
= show
;
1681 return make_cleanup (restore_show_memory_breakpoints
,
1682 (void *) (uintptr_t) current
);
1685 /* For docs see target.h, to_xfer_partial. */
1688 target_xfer_partial (struct target_ops
*ops
,
1689 enum target_object object
, const char *annex
,
1690 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1691 ULONGEST offset
, LONGEST len
)
1695 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1697 if (writebuf
&& !may_write_memory
)
1698 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1699 core_addr_to_string_nz (offset
), plongest (len
));
1701 /* If this is a memory transfer, let the memory-specific code
1702 have a look at it instead. Memory transfers are more
1704 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1705 || object
== TARGET_OBJECT_CODE_MEMORY
)
1706 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1707 writebuf
, offset
, len
);
1708 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1710 /* Request the normal memory object from other layers. */
1711 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
);
1714 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1715 writebuf
, offset
, len
);
1719 const unsigned char *myaddr
= NULL
;
1721 fprintf_unfiltered (gdb_stdlog
,
1722 "%s:target_xfer_partial "
1723 "(%d, %s, %s, %s, %s, %s) = %s",
1726 (annex
? annex
: "(null)"),
1727 host_address_to_string (readbuf
),
1728 host_address_to_string (writebuf
),
1729 core_addr_to_string_nz (offset
),
1730 plongest (len
), plongest (retval
));
1736 if (retval
> 0 && myaddr
!= NULL
)
1740 fputs_unfiltered (", bytes =", gdb_stdlog
);
1741 for (i
= 0; i
< retval
; i
++)
1743 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1745 if (targetdebug
< 2 && i
> 0)
1747 fprintf_unfiltered (gdb_stdlog
, " ...");
1750 fprintf_unfiltered (gdb_stdlog
, "\n");
1753 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1757 fputc_unfiltered ('\n', gdb_stdlog
);
1762 /* Read LEN bytes of target memory at address MEMADDR, placing the
1763 results in GDB's memory at MYADDR. Returns either 0 for success or
1764 a target_xfer_error value if any error occurs.
1766 If an error occurs, no guarantee is made about the contents of the data at
1767 MYADDR. In particular, the caller should not depend upon partial reads
1768 filling the buffer with good data. There is no way for the caller to know
1769 how much good data might have been transfered anyway. Callers that can
1770 deal with partial reads should call target_read (which will retry until
1771 it makes no progress, and then return how much was transferred). */
1774 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1776 /* Dispatch to the topmost target, not the flattened current_target.
1777 Memory accesses check target->to_has_(all_)memory, and the
1778 flattened target doesn't inherit those. */
1779 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1780 myaddr
, memaddr
, len
) == len
)
1783 return TARGET_XFER_E_IO
;
1786 /* Like target_read_memory, but specify explicitly that this is a read
1787 from the target's raw memory. That is, this read bypasses the
1788 dcache, breakpoint shadowing, etc. */
1791 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1793 /* See comment in target_read_memory about why the request starts at
1794 current_target.beneath. */
1795 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1796 myaddr
, memaddr
, len
) == len
)
1799 return TARGET_XFER_E_IO
;
1802 /* Like target_read_memory, but specify explicitly that this is a read from
1803 the target's stack. This may trigger different cache behavior. */
1806 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1808 /* See comment in target_read_memory about why the request starts at
1809 current_target.beneath. */
1810 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1811 myaddr
, memaddr
, len
) == len
)
1814 return TARGET_XFER_E_IO
;
1817 /* Like target_read_memory, but specify explicitly that this is a read from
1818 the target's code. This may trigger different cache behavior. */
1821 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1823 /* See comment in target_read_memory about why the request starts at
1824 current_target.beneath. */
1825 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1826 myaddr
, memaddr
, len
) == len
)
1829 return TARGET_XFER_E_IO
;
1832 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1833 Returns either 0 for success or a target_xfer_error value if any
1834 error occurs. If an error occurs, no guarantee is made about how
1835 much data got written. Callers that can deal with partial writes
1836 should call target_write. */
1839 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1841 /* See comment in target_read_memory about why the request starts at
1842 current_target.beneath. */
1843 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1844 myaddr
, memaddr
, len
) == len
)
1847 return TARGET_XFER_E_IO
;
1850 /* Write LEN bytes from MYADDR to target raw memory at address
1851 MEMADDR. Returns either 0 for success or a target_xfer_error value
1852 if any error occurs. If an error occurs, no guarantee is made
1853 about how much data got written. Callers that can deal with
1854 partial writes should call target_write. */
1857 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1859 /* See comment in target_read_memory about why the request starts at
1860 current_target.beneath. */
1861 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1862 myaddr
, memaddr
, len
) == len
)
1865 return TARGET_XFER_E_IO
;
1868 /* Fetch the target's memory map. */
1871 target_memory_map (void)
1873 VEC(mem_region_s
) *result
;
1874 struct mem_region
*last_one
, *this_one
;
1876 struct target_ops
*t
;
1879 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1881 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1882 if (t
->to_memory_map
!= NULL
)
1888 result
= t
->to_memory_map (t
);
1892 qsort (VEC_address (mem_region_s
, result
),
1893 VEC_length (mem_region_s
, result
),
1894 sizeof (struct mem_region
), mem_region_cmp
);
1896 /* Check that regions do not overlap. Simultaneously assign
1897 a numbering for the "mem" commands to use to refer to
1900 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1902 this_one
->number
= ix
;
1904 if (last_one
&& last_one
->hi
> this_one
->lo
)
1906 warning (_("Overlapping regions in memory map: ignoring"));
1907 VEC_free (mem_region_s
, result
);
1910 last_one
= this_one
;
1917 target_flash_erase (ULONGEST address
, LONGEST length
)
1919 struct target_ops
*t
;
1921 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1922 if (t
->to_flash_erase
!= NULL
)
1925 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1926 hex_string (address
), phex (length
, 0));
1927 t
->to_flash_erase (t
, address
, length
);
1935 target_flash_done (void)
1937 struct target_ops
*t
;
1939 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1940 if (t
->to_flash_done
!= NULL
)
1943 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1944 t
->to_flash_done (t
);
1952 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1953 struct cmd_list_element
*c
, const char *value
)
1955 fprintf_filtered (file
,
1956 _("Mode for reading from readonly sections is %s.\n"),
1960 /* More generic transfers. */
1963 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1964 const char *annex
, gdb_byte
*readbuf
,
1965 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1967 if (object
== TARGET_OBJECT_MEMORY
1968 && ops
->deprecated_xfer_memory
!= NULL
)
1969 /* If available, fall back to the target's
1970 "deprecated_xfer_memory" method. */
1975 if (writebuf
!= NULL
)
1977 void *buffer
= xmalloc (len
);
1978 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1980 memcpy (buffer
, writebuf
, len
);
1981 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1982 1/*write*/, NULL
, ops
);
1983 do_cleanups (cleanup
);
1985 if (readbuf
!= NULL
)
1986 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1987 0/*read*/, NULL
, ops
);
1990 else if (xfered
== 0 && errno
== 0)
1991 /* "deprecated_xfer_memory" uses 0, cross checked against
1992 ERRNO as one indication of an error. */
1997 else if (ops
->beneath
!= NULL
)
1998 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1999 readbuf
, writebuf
, offset
, len
);
2004 /* The xfer_partial handler for the topmost target. Unlike the default,
2005 it does not need to handle memory specially; it just passes all
2006 requests down the stack. */
2009 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
2010 const char *annex
, gdb_byte
*readbuf
,
2011 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
2013 if (ops
->beneath
!= NULL
)
2014 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
2015 readbuf
, writebuf
, offset
, len
);
2020 /* Target vector read/write partial wrapper functions. */
2023 target_read_partial (struct target_ops
*ops
,
2024 enum target_object object
,
2025 const char *annex
, gdb_byte
*buf
,
2026 ULONGEST offset
, LONGEST len
)
2028 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
2032 target_write_partial (struct target_ops
*ops
,
2033 enum target_object object
,
2034 const char *annex
, const gdb_byte
*buf
,
2035 ULONGEST offset
, LONGEST len
)
2037 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
2040 /* Wrappers to perform the full transfer. */
2042 /* For docs on target_read see target.h. */
2045 target_read (struct target_ops
*ops
,
2046 enum target_object object
,
2047 const char *annex
, gdb_byte
*buf
,
2048 ULONGEST offset
, LONGEST len
)
2052 while (xfered
< len
)
2054 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
2055 (gdb_byte
*) buf
+ xfered
,
2056 offset
+ xfered
, len
- xfered
);
2058 /* Call an observer, notifying them of the xfer progress? */
2069 /* Assuming that the entire [begin, end) range of memory cannot be
2070 read, try to read whatever subrange is possible to read.
2072 The function returns, in RESULT, either zero or one memory block.
2073 If there's a readable subrange at the beginning, it is completely
2074 read and returned. Any further readable subrange will not be read.
2075 Otherwise, if there's a readable subrange at the end, it will be
2076 completely read and returned. Any readable subranges before it
2077 (obviously, not starting at the beginning), will be ignored. In
2078 other cases -- either no readable subrange, or readable subrange(s)
2079 that is neither at the beginning, or end, nothing is returned.
2081 The purpose of this function is to handle a read across a boundary
2082 of accessible memory in a case when memory map is not available.
2083 The above restrictions are fine for this case, but will give
2084 incorrect results if the memory is 'patchy'. However, supporting
2085 'patchy' memory would require trying to read every single byte,
2086 and it seems unacceptable solution. Explicit memory map is
2087 recommended for this case -- and target_read_memory_robust will
2088 take care of reading multiple ranges then. */
2091 read_whatever_is_readable (struct target_ops
*ops
,
2092 ULONGEST begin
, ULONGEST end
,
2093 VEC(memory_read_result_s
) **result
)
2095 gdb_byte
*buf
= xmalloc (end
- begin
);
2096 ULONGEST current_begin
= begin
;
2097 ULONGEST current_end
= end
;
2099 memory_read_result_s r
;
2101 /* If we previously failed to read 1 byte, nothing can be done here. */
2102 if (end
- begin
<= 1)
2108 /* Check that either first or the last byte is readable, and give up
2109 if not. This heuristic is meant to permit reading accessible memory
2110 at the boundary of accessible region. */
2111 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2112 buf
, begin
, 1) == 1)
2117 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2118 buf
+ (end
-begin
) - 1, end
- 1, 1) == 1)
2129 /* Loop invariant is that the [current_begin, current_end) was previously
2130 found to be not readable as a whole.
2132 Note loop condition -- if the range has 1 byte, we can't divide the range
2133 so there's no point trying further. */
2134 while (current_end
- current_begin
> 1)
2136 ULONGEST first_half_begin
, first_half_end
;
2137 ULONGEST second_half_begin
, second_half_end
;
2139 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2143 first_half_begin
= current_begin
;
2144 first_half_end
= middle
;
2145 second_half_begin
= middle
;
2146 second_half_end
= current_end
;
2150 first_half_begin
= middle
;
2151 first_half_end
= current_end
;
2152 second_half_begin
= current_begin
;
2153 second_half_end
= middle
;
2156 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2157 buf
+ (first_half_begin
- begin
),
2159 first_half_end
- first_half_begin
);
2161 if (xfer
== first_half_end
- first_half_begin
)
2163 /* This half reads up fine. So, the error must be in the
2165 current_begin
= second_half_begin
;
2166 current_end
= second_half_end
;
2170 /* This half is not readable. Because we've tried one byte, we
2171 know some part of this half if actually redable. Go to the next
2172 iteration to divide again and try to read.
2174 We don't handle the other half, because this function only tries
2175 to read a single readable subrange. */
2176 current_begin
= first_half_begin
;
2177 current_end
= first_half_end
;
2183 /* The [begin, current_begin) range has been read. */
2185 r
.end
= current_begin
;
2190 /* The [current_end, end) range has been read. */
2191 LONGEST rlen
= end
- current_end
;
2193 r
.data
= xmalloc (rlen
);
2194 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2195 r
.begin
= current_end
;
2199 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2203 free_memory_read_result_vector (void *x
)
2205 VEC(memory_read_result_s
) *v
= x
;
2206 memory_read_result_s
*current
;
2209 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2211 xfree (current
->data
);
2213 VEC_free (memory_read_result_s
, v
);
2216 VEC(memory_read_result_s
) *
2217 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2219 VEC(memory_read_result_s
) *result
= 0;
2222 while (xfered
< len
)
2224 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2227 /* If there is no explicit region, a fake one should be created. */
2228 gdb_assert (region
);
2230 if (region
->hi
== 0)
2231 rlen
= len
- xfered
;
2233 rlen
= region
->hi
- offset
;
2235 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2237 /* Cannot read this region. Note that we can end up here only
2238 if the region is explicitly marked inaccessible, or
2239 'inaccessible-by-default' is in effect. */
2244 LONGEST to_read
= min (len
- xfered
, rlen
);
2245 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2247 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2248 (gdb_byte
*) buffer
,
2249 offset
+ xfered
, to_read
);
2250 /* Call an observer, notifying them of the xfer progress? */
2253 /* Got an error reading full chunk. See if maybe we can read
2256 read_whatever_is_readable (ops
, offset
+ xfered
,
2257 offset
+ xfered
+ to_read
, &result
);
2262 struct memory_read_result r
;
2264 r
.begin
= offset
+ xfered
;
2265 r
.end
= r
.begin
+ xfer
;
2266 VEC_safe_push (memory_read_result_s
, result
, &r
);
2276 /* An alternative to target_write with progress callbacks. */
2279 target_write_with_progress (struct target_ops
*ops
,
2280 enum target_object object
,
2281 const char *annex
, const gdb_byte
*buf
,
2282 ULONGEST offset
, LONGEST len
,
2283 void (*progress
) (ULONGEST
, void *), void *baton
)
2287 /* Give the progress callback a chance to set up. */
2289 (*progress
) (0, baton
);
2291 while (xfered
< len
)
2293 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
2294 (gdb_byte
*) buf
+ xfered
,
2295 offset
+ xfered
, len
- xfered
);
2303 (*progress
) (xfer
, baton
);
2311 /* For docs on target_write see target.h. */
2314 target_write (struct target_ops
*ops
,
2315 enum target_object object
,
2316 const char *annex
, const gdb_byte
*buf
,
2317 ULONGEST offset
, LONGEST len
)
2319 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2323 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2324 the size of the transferred data. PADDING additional bytes are
2325 available in *BUF_P. This is a helper function for
2326 target_read_alloc; see the declaration of that function for more
2330 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2331 const char *annex
, gdb_byte
**buf_p
, int padding
)
2333 size_t buf_alloc
, buf_pos
;
2337 /* This function does not have a length parameter; it reads the
2338 entire OBJECT). Also, it doesn't support objects fetched partly
2339 from one target and partly from another (in a different stratum,
2340 e.g. a core file and an executable). Both reasons make it
2341 unsuitable for reading memory. */
2342 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2344 /* Start by reading up to 4K at a time. The target will throttle
2345 this number down if necessary. */
2347 buf
= xmalloc (buf_alloc
);
2351 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2352 buf_pos
, buf_alloc
- buf_pos
- padding
);
2355 /* An error occurred. */
2361 /* Read all there was. */
2371 /* If the buffer is filling up, expand it. */
2372 if (buf_alloc
< buf_pos
* 2)
2375 buf
= xrealloc (buf
, buf_alloc
);
2382 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2383 the size of the transferred data. See the declaration in "target.h"
2384 function for more information about the return value. */
2387 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2388 const char *annex
, gdb_byte
**buf_p
)
2390 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2393 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2394 returned as a string, allocated using xmalloc. If an error occurs
2395 or the transfer is unsupported, NULL is returned. Empty objects
2396 are returned as allocated but empty strings. A warning is issued
2397 if the result contains any embedded NUL bytes. */
2400 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2405 LONGEST i
, transferred
;
2407 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2408 bufstr
= (char *) buffer
;
2410 if (transferred
< 0)
2413 if (transferred
== 0)
2414 return xstrdup ("");
2416 bufstr
[transferred
] = 0;
2418 /* Check for embedded NUL bytes; but allow trailing NULs. */
2419 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2422 warning (_("target object %d, annex %s, "
2423 "contained unexpected null characters"),
2424 (int) object
, annex
? annex
: "(none)");
2431 /* Memory transfer methods. */
2434 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2437 /* This method is used to read from an alternate, non-current
2438 target. This read must bypass the overlay support (as symbols
2439 don't match this target), and GDB's internal cache (wrong cache
2440 for this target). */
2441 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2443 memory_error (TARGET_XFER_E_IO
, addr
);
2447 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2448 int len
, enum bfd_endian byte_order
)
2450 gdb_byte buf
[sizeof (ULONGEST
)];
2452 gdb_assert (len
<= sizeof (buf
));
2453 get_target_memory (ops
, addr
, buf
, len
);
2454 return extract_unsigned_integer (buf
, len
, byte_order
);
2458 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2459 struct bp_target_info
*bp_tgt
)
2461 if (!may_insert_breakpoints
)
2463 warning (_("May not insert breakpoints"));
2467 return (*current_target
.to_insert_breakpoint
) (gdbarch
, bp_tgt
);
2471 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2472 struct bp_target_info
*bp_tgt
)
2474 /* This is kind of a weird case to handle, but the permission might
2475 have been changed after breakpoints were inserted - in which case
2476 we should just take the user literally and assume that any
2477 breakpoints should be left in place. */
2478 if (!may_insert_breakpoints
)
2480 warning (_("May not remove breakpoints"));
2484 return (*current_target
.to_remove_breakpoint
) (gdbarch
, bp_tgt
);
2488 target_info (char *args
, int from_tty
)
2490 struct target_ops
*t
;
2491 int has_all_mem
= 0;
2493 if (symfile_objfile
!= NULL
)
2494 printf_unfiltered (_("Symbols from \"%s\".\n"),
2495 objfile_name (symfile_objfile
));
2497 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2499 if (!(*t
->to_has_memory
) (t
))
2502 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2505 printf_unfiltered (_("\tWhile running this, "
2506 "GDB does not access memory from...\n"));
2507 printf_unfiltered ("%s:\n", t
->to_longname
);
2508 (t
->to_files_info
) (t
);
2509 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2513 /* This function is called before any new inferior is created, e.g.
2514 by running a program, attaching, or connecting to a target.
2515 It cleans up any state from previous invocations which might
2516 change between runs. This is a subset of what target_preopen
2517 resets (things which might change between targets). */
2520 target_pre_inferior (int from_tty
)
2522 /* Clear out solib state. Otherwise the solib state of the previous
2523 inferior might have survived and is entirely wrong for the new
2524 target. This has been observed on GNU/Linux using glibc 2.3. How
2536 Cannot access memory at address 0xdeadbeef
2539 /* In some OSs, the shared library list is the same/global/shared
2540 across inferiors. If code is shared between processes, so are
2541 memory regions and features. */
2542 if (!gdbarch_has_global_solist (target_gdbarch ()))
2544 no_shared_libraries (NULL
, from_tty
);
2546 invalidate_target_mem_regions ();
2548 target_clear_description ();
2551 agent_capability_invalidate ();
2554 /* Callback for iterate_over_inferiors. Gets rid of the given
2558 dispose_inferior (struct inferior
*inf
, void *args
)
2560 struct thread_info
*thread
;
2562 thread
= any_thread_of_process (inf
->pid
);
2565 switch_to_thread (thread
->ptid
);
2567 /* Core inferiors actually should be detached, not killed. */
2568 if (target_has_execution
)
2571 target_detach (NULL
, 0);
2577 /* This is to be called by the open routine before it does
2581 target_preopen (int from_tty
)
2585 if (have_inferiors ())
2588 || !have_live_inferiors ()
2589 || query (_("A program is being debugged already. Kill it? ")))
2590 iterate_over_inferiors (dispose_inferior
, NULL
);
2592 error (_("Program not killed."));
2595 /* Calling target_kill may remove the target from the stack. But if
2596 it doesn't (which seems like a win for UDI), remove it now. */
2597 /* Leave the exec target, though. The user may be switching from a
2598 live process to a core of the same program. */
2599 pop_all_targets_above (file_stratum
);
2601 target_pre_inferior (from_tty
);
2604 /* Detach a target after doing deferred register stores. */
2607 target_detach (const char *args
, int from_tty
)
2609 struct target_ops
* t
;
2611 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2612 /* Don't remove global breakpoints here. They're removed on
2613 disconnection from the target. */
2616 /* If we're in breakpoints-always-inserted mode, have to remove
2617 them before detaching. */
2618 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2620 prepare_for_detach ();
2622 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2624 if (t
->to_detach
!= NULL
)
2626 t
->to_detach (t
, args
, from_tty
);
2628 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2634 internal_error (__FILE__
, __LINE__
, _("could not find a target to detach"));
2638 target_disconnect (char *args
, int from_tty
)
2640 struct target_ops
*t
;
2642 /* If we're in breakpoints-always-inserted mode or if breakpoints
2643 are global across processes, we have to remove them before
2645 remove_breakpoints ();
2647 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2648 if (t
->to_disconnect
!= NULL
)
2651 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2653 t
->to_disconnect (t
, args
, from_tty
);
2661 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2663 struct target_ops
*t
;
2665 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2667 if (t
->to_wait
!= NULL
)
2669 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2673 char *status_string
;
2674 char *options_string
;
2676 status_string
= target_waitstatus_to_string (status
);
2677 options_string
= target_options_to_string (options
);
2678 fprintf_unfiltered (gdb_stdlog
,
2679 "target_wait (%d, status, options={%s})"
2681 ptid_get_pid (ptid
), options_string
,
2682 ptid_get_pid (retval
), status_string
);
2683 xfree (status_string
);
2684 xfree (options_string
);
2695 target_pid_to_str (ptid_t ptid
)
2697 struct target_ops
*t
;
2699 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2701 if (t
->to_pid_to_str
!= NULL
)
2702 return (*t
->to_pid_to_str
) (t
, ptid
);
2705 return normal_pid_to_str (ptid
);
2709 target_thread_name (struct thread_info
*info
)
2711 struct target_ops
*t
;
2713 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2715 if (t
->to_thread_name
!= NULL
)
2716 return (*t
->to_thread_name
) (info
);
2723 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2725 struct target_ops
*t
;
2727 target_dcache_invalidate ();
2729 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2731 if (t
->to_resume
!= NULL
)
2733 t
->to_resume (t
, ptid
, step
, signal
);
2735 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2736 ptid_get_pid (ptid
),
2737 step
? "step" : "continue",
2738 gdb_signal_to_name (signal
));
2740 registers_changed_ptid (ptid
);
2741 set_executing (ptid
, 1);
2742 set_running (ptid
, 1);
2743 clear_inline_frame_state (ptid
);
2752 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2754 struct target_ops
*t
;
2756 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2758 if (t
->to_pass_signals
!= NULL
)
2764 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2767 for (i
= 0; i
< numsigs
; i
++)
2768 if (pass_signals
[i
])
2769 fprintf_unfiltered (gdb_stdlog
, " %s",
2770 gdb_signal_to_name (i
));
2772 fprintf_unfiltered (gdb_stdlog
, " })\n");
2775 (*t
->to_pass_signals
) (numsigs
, pass_signals
);
2782 target_program_signals (int numsigs
, unsigned char *program_signals
)
2784 struct target_ops
*t
;
2786 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2788 if (t
->to_program_signals
!= NULL
)
2794 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2797 for (i
= 0; i
< numsigs
; i
++)
2798 if (program_signals
[i
])
2799 fprintf_unfiltered (gdb_stdlog
, " %s",
2800 gdb_signal_to_name (i
));
2802 fprintf_unfiltered (gdb_stdlog
, " })\n");
2805 (*t
->to_program_signals
) (numsigs
, program_signals
);
2811 /* Look through the list of possible targets for a target that can
2815 target_follow_fork (int follow_child
, int detach_fork
)
2817 struct target_ops
*t
;
2819 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2821 if (t
->to_follow_fork
!= NULL
)
2823 int retval
= t
->to_follow_fork (t
, follow_child
, detach_fork
);
2826 fprintf_unfiltered (gdb_stdlog
,
2827 "target_follow_fork (%d, %d) = %d\n",
2828 follow_child
, detach_fork
, retval
);
2833 /* Some target returned a fork event, but did not know how to follow it. */
2834 internal_error (__FILE__
, __LINE__
,
2835 _("could not find a target to follow fork"));
2839 target_mourn_inferior (void)
2841 struct target_ops
*t
;
2843 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2845 if (t
->to_mourn_inferior
!= NULL
)
2847 t
->to_mourn_inferior (t
);
2849 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2851 /* We no longer need to keep handles on any of the object files.
2852 Make sure to release them to avoid unnecessarily locking any
2853 of them while we're not actually debugging. */
2854 bfd_cache_close_all ();
2860 internal_error (__FILE__
, __LINE__
,
2861 _("could not find a target to follow mourn inferior"));
2864 /* Look for a target which can describe architectural features, starting
2865 from TARGET. If we find one, return its description. */
2867 const struct target_desc
*
2868 target_read_description (struct target_ops
*target
)
2870 struct target_ops
*t
;
2872 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2873 if (t
->to_read_description
!= NULL
)
2875 const struct target_desc
*tdesc
;
2877 tdesc
= t
->to_read_description (t
);
2885 /* The default implementation of to_search_memory.
2886 This implements a basic search of memory, reading target memory and
2887 performing the search here (as opposed to performing the search in on the
2888 target side with, for example, gdbserver). */
2891 simple_search_memory (struct target_ops
*ops
,
2892 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2893 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2894 CORE_ADDR
*found_addrp
)
2896 /* NOTE: also defined in find.c testcase. */
2897 #define SEARCH_CHUNK_SIZE 16000
2898 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2899 /* Buffer to hold memory contents for searching. */
2900 gdb_byte
*search_buf
;
2901 unsigned search_buf_size
;
2902 struct cleanup
*old_cleanups
;
2904 search_buf_size
= chunk_size
+ pattern_len
- 1;
2906 /* No point in trying to allocate a buffer larger than the search space. */
2907 if (search_space_len
< search_buf_size
)
2908 search_buf_size
= search_space_len
;
2910 search_buf
= malloc (search_buf_size
);
2911 if (search_buf
== NULL
)
2912 error (_("Unable to allocate memory to perform the search."));
2913 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2915 /* Prime the search buffer. */
2917 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2918 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2920 warning (_("Unable to access %s bytes of target "
2921 "memory at %s, halting search."),
2922 pulongest (search_buf_size
), hex_string (start_addr
));
2923 do_cleanups (old_cleanups
);
2927 /* Perform the search.
2929 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2930 When we've scanned N bytes we copy the trailing bytes to the start and
2931 read in another N bytes. */
2933 while (search_space_len
>= pattern_len
)
2935 gdb_byte
*found_ptr
;
2936 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2938 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2939 pattern
, pattern_len
);
2941 if (found_ptr
!= NULL
)
2943 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2945 *found_addrp
= found_addr
;
2946 do_cleanups (old_cleanups
);
2950 /* Not found in this chunk, skip to next chunk. */
2952 /* Don't let search_space_len wrap here, it's unsigned. */
2953 if (search_space_len
>= chunk_size
)
2954 search_space_len
-= chunk_size
;
2956 search_space_len
= 0;
2958 if (search_space_len
>= pattern_len
)
2960 unsigned keep_len
= search_buf_size
- chunk_size
;
2961 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2964 /* Copy the trailing part of the previous iteration to the front
2965 of the buffer for the next iteration. */
2966 gdb_assert (keep_len
== pattern_len
- 1);
2967 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2969 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2971 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2972 search_buf
+ keep_len
, read_addr
,
2973 nr_to_read
) != nr_to_read
)
2975 warning (_("Unable to access %s bytes of target "
2976 "memory at %s, halting search."),
2977 plongest (nr_to_read
),
2978 hex_string (read_addr
));
2979 do_cleanups (old_cleanups
);
2983 start_addr
+= chunk_size
;
2989 do_cleanups (old_cleanups
);
2993 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2994 sequence of bytes in PATTERN with length PATTERN_LEN.
2996 The result is 1 if found, 0 if not found, and -1 if there was an error
2997 requiring halting of the search (e.g. memory read error).
2998 If the pattern is found the address is recorded in FOUND_ADDRP. */
3001 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
3002 const gdb_byte
*pattern
, ULONGEST pattern_len
,
3003 CORE_ADDR
*found_addrp
)
3005 struct target_ops
*t
;
3008 /* We don't use INHERIT to set current_target.to_search_memory,
3009 so we have to scan the target stack and handle targetdebug
3013 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
3014 hex_string (start_addr
));
3016 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3017 if (t
->to_search_memory
!= NULL
)
3022 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
3023 pattern
, pattern_len
, found_addrp
);
3027 /* If a special version of to_search_memory isn't available, use the
3029 found
= simple_search_memory (current_target
.beneath
,
3030 start_addr
, search_space_len
,
3031 pattern
, pattern_len
, found_addrp
);
3035 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
3040 /* Look through the currently pushed targets. If none of them will
3041 be able to restart the currently running process, issue an error
3045 target_require_runnable (void)
3047 struct target_ops
*t
;
3049 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3051 /* If this target knows how to create a new program, then
3052 assume we will still be able to after killing the current
3053 one. Either killing and mourning will not pop T, or else
3054 find_default_run_target will find it again. */
3055 if (t
->to_create_inferior
!= NULL
)
3058 /* Do not worry about thread_stratum targets that can not
3059 create inferiors. Assume they will be pushed again if
3060 necessary, and continue to the process_stratum. */
3061 if (t
->to_stratum
== thread_stratum
3062 || t
->to_stratum
== arch_stratum
)
3065 error (_("The \"%s\" target does not support \"run\". "
3066 "Try \"help target\" or \"continue\"."),
3070 /* This function is only called if the target is running. In that
3071 case there should have been a process_stratum target and it
3072 should either know how to create inferiors, or not... */
3073 internal_error (__FILE__
, __LINE__
, _("No targets found"));
3076 /* Look through the list of possible targets for a target that can
3077 execute a run or attach command without any other data. This is
3078 used to locate the default process stratum.
3080 If DO_MESG is not NULL, the result is always valid (error() is
3081 called for errors); else, return NULL on error. */
3083 static struct target_ops
*
3084 find_default_run_target (char *do_mesg
)
3086 struct target_ops
**t
;
3087 struct target_ops
*runable
= NULL
;
3092 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3095 if ((*t
)->to_can_run
&& target_can_run (*t
))
3105 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3114 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3116 struct target_ops
*t
;
3118 t
= find_default_run_target ("attach");
3119 (t
->to_attach
) (t
, args
, from_tty
);
3124 find_default_create_inferior (struct target_ops
*ops
,
3125 char *exec_file
, char *allargs
, char **env
,
3128 struct target_ops
*t
;
3130 t
= find_default_run_target ("run");
3131 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3136 find_default_can_async_p (void)
3138 struct target_ops
*t
;
3140 /* This may be called before the target is pushed on the stack;
3141 look for the default process stratum. If there's none, gdb isn't
3142 configured with a native debugger, and target remote isn't
3144 t
= find_default_run_target (NULL
);
3145 if (t
&& t
->to_can_async_p
)
3146 return (t
->to_can_async_p
) ();
3151 find_default_is_async_p (void)
3153 struct target_ops
*t
;
3155 /* This may be called before the target is pushed on the stack;
3156 look for the default process stratum. If there's none, gdb isn't
3157 configured with a native debugger, and target remote isn't
3159 t
= find_default_run_target (NULL
);
3160 if (t
&& t
->to_is_async_p
)
3161 return (t
->to_is_async_p
) ();
3166 find_default_supports_non_stop (void)
3168 struct target_ops
*t
;
3170 t
= find_default_run_target (NULL
);
3171 if (t
&& t
->to_supports_non_stop
)
3172 return (t
->to_supports_non_stop
) ();
3177 target_supports_non_stop (void)
3179 struct target_ops
*t
;
3181 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3182 if (t
->to_supports_non_stop
)
3183 return t
->to_supports_non_stop ();
3188 /* Implement the "info proc" command. */
3191 target_info_proc (char *args
, enum info_proc_what what
)
3193 struct target_ops
*t
;
3195 /* If we're already connected to something that can get us OS
3196 related data, use it. Otherwise, try using the native
3198 if (current_target
.to_stratum
>= process_stratum
)
3199 t
= current_target
.beneath
;
3201 t
= find_default_run_target (NULL
);
3203 for (; t
!= NULL
; t
= t
->beneath
)
3205 if (t
->to_info_proc
!= NULL
)
3207 t
->to_info_proc (t
, args
, what
);
3210 fprintf_unfiltered (gdb_stdlog
,
3211 "target_info_proc (\"%s\", %d)\n", args
, what
);
3221 find_default_supports_disable_randomization (void)
3223 struct target_ops
*t
;
3225 t
= find_default_run_target (NULL
);
3226 if (t
&& t
->to_supports_disable_randomization
)
3227 return (t
->to_supports_disable_randomization
) ();
3232 target_supports_disable_randomization (void)
3234 struct target_ops
*t
;
3236 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3237 if (t
->to_supports_disable_randomization
)
3238 return t
->to_supports_disable_randomization ();
3244 target_get_osdata (const char *type
)
3246 struct target_ops
*t
;
3248 /* If we're already connected to something that can get us OS
3249 related data, use it. Otherwise, try using the native
3251 if (current_target
.to_stratum
>= process_stratum
)
3252 t
= current_target
.beneath
;
3254 t
= find_default_run_target ("get OS data");
3259 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3262 /* Determine the current address space of thread PTID. */
3264 struct address_space
*
3265 target_thread_address_space (ptid_t ptid
)
3267 struct address_space
*aspace
;
3268 struct inferior
*inf
;
3269 struct target_ops
*t
;
3271 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3273 if (t
->to_thread_address_space
!= NULL
)
3275 aspace
= t
->to_thread_address_space (t
, ptid
);
3276 gdb_assert (aspace
);
3279 fprintf_unfiltered (gdb_stdlog
,
3280 "target_thread_address_space (%s) = %d\n",
3281 target_pid_to_str (ptid
),
3282 address_space_num (aspace
));
3287 /* Fall-back to the "main" address space of the inferior. */
3288 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3290 if (inf
== NULL
|| inf
->aspace
== NULL
)
3291 internal_error (__FILE__
, __LINE__
,
3292 _("Can't determine the current "
3293 "address space of thread %s\n"),
3294 target_pid_to_str (ptid
));
3300 /* Target file operations. */
3302 static struct target_ops
*
3303 default_fileio_target (void)
3305 /* If we're already connected to something that can perform
3306 file I/O, use it. Otherwise, try using the native target. */
3307 if (current_target
.to_stratum
>= process_stratum
)
3308 return current_target
.beneath
;
3310 return find_default_run_target ("file I/O");
3313 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3314 target file descriptor, or -1 if an error occurs (and set
3317 target_fileio_open (const char *filename
, int flags
, int mode
,
3320 struct target_ops
*t
;
3322 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3324 if (t
->to_fileio_open
!= NULL
)
3326 int fd
= t
->to_fileio_open (filename
, flags
, mode
, target_errno
);
3329 fprintf_unfiltered (gdb_stdlog
,
3330 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3331 filename
, flags
, mode
,
3332 fd
, fd
!= -1 ? 0 : *target_errno
);
3337 *target_errno
= FILEIO_ENOSYS
;
3341 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3342 Return the number of bytes written, or -1 if an error occurs
3343 (and set *TARGET_ERRNO). */
3345 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3346 ULONGEST offset
, int *target_errno
)
3348 struct target_ops
*t
;
3350 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3352 if (t
->to_fileio_pwrite
!= NULL
)
3354 int ret
= t
->to_fileio_pwrite (fd
, write_buf
, len
, offset
,
3358 fprintf_unfiltered (gdb_stdlog
,
3359 "target_fileio_pwrite (%d,...,%d,%s) "
3361 fd
, len
, pulongest (offset
),
3362 ret
, ret
!= -1 ? 0 : *target_errno
);
3367 *target_errno
= FILEIO_ENOSYS
;
3371 /* Read up to LEN bytes FD on the target into READ_BUF.
3372 Return the number of bytes read, or -1 if an error occurs
3373 (and set *TARGET_ERRNO). */
3375 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3376 ULONGEST offset
, int *target_errno
)
3378 struct target_ops
*t
;
3380 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3382 if (t
->to_fileio_pread
!= NULL
)
3384 int ret
= t
->to_fileio_pread (fd
, read_buf
, len
, offset
,
3388 fprintf_unfiltered (gdb_stdlog
,
3389 "target_fileio_pread (%d,...,%d,%s) "
3391 fd
, len
, pulongest (offset
),
3392 ret
, ret
!= -1 ? 0 : *target_errno
);
3397 *target_errno
= FILEIO_ENOSYS
;
3401 /* Close FD on the target. Return 0, or -1 if an error occurs
3402 (and set *TARGET_ERRNO). */
3404 target_fileio_close (int fd
, int *target_errno
)
3406 struct target_ops
*t
;
3408 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3410 if (t
->to_fileio_close
!= NULL
)
3412 int ret
= t
->to_fileio_close (fd
, target_errno
);
3415 fprintf_unfiltered (gdb_stdlog
,
3416 "target_fileio_close (%d) = %d (%d)\n",
3417 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3422 *target_errno
= FILEIO_ENOSYS
;
3426 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3427 occurs (and set *TARGET_ERRNO). */
3429 target_fileio_unlink (const char *filename
, int *target_errno
)
3431 struct target_ops
*t
;
3433 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3435 if (t
->to_fileio_unlink
!= NULL
)
3437 int ret
= t
->to_fileio_unlink (filename
, target_errno
);
3440 fprintf_unfiltered (gdb_stdlog
,
3441 "target_fileio_unlink (%s) = %d (%d)\n",
3442 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3447 *target_errno
= FILEIO_ENOSYS
;
3451 /* Read value of symbolic link FILENAME on the target. Return a
3452 null-terminated string allocated via xmalloc, or NULL if an error
3453 occurs (and set *TARGET_ERRNO). */
3455 target_fileio_readlink (const char *filename
, int *target_errno
)
3457 struct target_ops
*t
;
3459 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3461 if (t
->to_fileio_readlink
!= NULL
)
3463 char *ret
= t
->to_fileio_readlink (filename
, target_errno
);
3466 fprintf_unfiltered (gdb_stdlog
,
3467 "target_fileio_readlink (%s) = %s (%d)\n",
3468 filename
, ret
? ret
: "(nil)",
3469 ret
? 0 : *target_errno
);
3474 *target_errno
= FILEIO_ENOSYS
;
3479 target_fileio_close_cleanup (void *opaque
)
3481 int fd
= *(int *) opaque
;
3484 target_fileio_close (fd
, &target_errno
);
3487 /* Read target file FILENAME. Store the result in *BUF_P and
3488 return the size of the transferred data. PADDING additional bytes are
3489 available in *BUF_P. This is a helper function for
3490 target_fileio_read_alloc; see the declaration of that function for more
3494 target_fileio_read_alloc_1 (const char *filename
,
3495 gdb_byte
**buf_p
, int padding
)
3497 struct cleanup
*close_cleanup
;
3498 size_t buf_alloc
, buf_pos
;
3504 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3508 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3510 /* Start by reading up to 4K at a time. The target will throttle
3511 this number down if necessary. */
3513 buf
= xmalloc (buf_alloc
);
3517 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3518 buf_alloc
- buf_pos
- padding
, buf_pos
,
3522 /* An error occurred. */
3523 do_cleanups (close_cleanup
);
3529 /* Read all there was. */
3530 do_cleanups (close_cleanup
);
3540 /* If the buffer is filling up, expand it. */
3541 if (buf_alloc
< buf_pos
* 2)
3544 buf
= xrealloc (buf
, buf_alloc
);
3551 /* Read target file FILENAME. Store the result in *BUF_P and return
3552 the size of the transferred data. See the declaration in "target.h"
3553 function for more information about the return value. */
3556 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3558 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3561 /* Read target file FILENAME. The result is NUL-terminated and
3562 returned as a string, allocated using xmalloc. If an error occurs
3563 or the transfer is unsupported, NULL is returned. Empty objects
3564 are returned as allocated but empty strings. A warning is issued
3565 if the result contains any embedded NUL bytes. */
3568 target_fileio_read_stralloc (const char *filename
)
3572 LONGEST i
, transferred
;
3574 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3575 bufstr
= (char *) buffer
;
3577 if (transferred
< 0)
3580 if (transferred
== 0)
3581 return xstrdup ("");
3583 bufstr
[transferred
] = 0;
3585 /* Check for embedded NUL bytes; but allow trailing NULs. */
3586 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3589 warning (_("target file %s "
3590 "contained unexpected null characters"),
3600 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3602 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3606 default_watchpoint_addr_within_range (struct target_ops
*target
,
3608 CORE_ADDR start
, int length
)
3610 return addr
>= start
&& addr
< start
+ length
;
3613 static struct gdbarch
*
3614 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3616 return target_gdbarch ();
3632 return_minus_one (void)
3638 * Find the next target down the stack from the specified target.
3642 find_target_beneath (struct target_ops
*t
)
3648 /* The inferior process has died. Long live the inferior! */
3651 generic_mourn_inferior (void)
3655 ptid
= inferior_ptid
;
3656 inferior_ptid
= null_ptid
;
3658 /* Mark breakpoints uninserted in case something tries to delete a
3659 breakpoint while we delete the inferior's threads (which would
3660 fail, since the inferior is long gone). */
3661 mark_breakpoints_out ();
3663 if (!ptid_equal (ptid
, null_ptid
))
3665 int pid
= ptid_get_pid (ptid
);
3666 exit_inferior (pid
);
3669 /* Note this wipes step-resume breakpoints, so needs to be done
3670 after exit_inferior, which ends up referencing the step-resume
3671 breakpoints through clear_thread_inferior_resources. */
3672 breakpoint_init_inferior (inf_exited
);
3674 registers_changed ();
3676 reopen_exec_file ();
3677 reinit_frame_cache ();
3679 if (deprecated_detach_hook
)
3680 deprecated_detach_hook ();
3683 /* Convert a normal process ID to a string. Returns the string in a
3687 normal_pid_to_str (ptid_t ptid
)
3689 static char buf
[32];
3691 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3696 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3698 return normal_pid_to_str (ptid
);
3701 /* Error-catcher for target_find_memory_regions. */
3703 dummy_find_memory_regions (find_memory_region_ftype ignore1
, void *ignore2
)
3705 error (_("Command not implemented for this target."));
3709 /* Error-catcher for target_make_corefile_notes. */
3711 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
3713 error (_("Command not implemented for this target."));
3717 /* Error-catcher for target_get_bookmark. */
3719 dummy_get_bookmark (char *ignore1
, int ignore2
)
3725 /* Error-catcher for target_goto_bookmark. */
3727 dummy_goto_bookmark (gdb_byte
*ignore
, int from_tty
)
3732 /* Set up the handful of non-empty slots needed by the dummy target
3736 init_dummy_target (void)
3738 dummy_target
.to_shortname
= "None";
3739 dummy_target
.to_longname
= "None";
3740 dummy_target
.to_doc
= "";
3741 dummy_target
.to_attach
= find_default_attach
;
3742 dummy_target
.to_detach
=
3743 (void (*)(struct target_ops
*, const char *, int))target_ignore
;
3744 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3745 dummy_target
.to_can_async_p
= find_default_can_async_p
;
3746 dummy_target
.to_is_async_p
= find_default_is_async_p
;
3747 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3748 dummy_target
.to_supports_disable_randomization
3749 = find_default_supports_disable_randomization
;
3750 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3751 dummy_target
.to_stratum
= dummy_stratum
;
3752 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
3753 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
3754 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
3755 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
3756 dummy_target
.to_xfer_partial
= default_xfer_partial
;
3757 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3758 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3759 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3760 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3761 dummy_target
.to_has_execution
3762 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3763 dummy_target
.to_stopped_by_watchpoint
= return_zero
;
3764 dummy_target
.to_stopped_data_address
=
3765 (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
;
3766 dummy_target
.to_magic
= OPS_MAGIC
;
3770 debug_to_open (char *args
, int from_tty
)
3772 debug_target
.to_open (args
, from_tty
);
3774 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3778 target_close (struct target_ops
*targ
)
3780 gdb_assert (!target_is_pushed (targ
));
3782 if (targ
->to_xclose
!= NULL
)
3783 targ
->to_xclose (targ
);
3784 else if (targ
->to_close
!= NULL
)
3788 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3792 target_attach (char *args
, int from_tty
)
3794 struct target_ops
*t
;
3796 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3798 if (t
->to_attach
!= NULL
)
3800 t
->to_attach (t
, args
, from_tty
);
3802 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3808 internal_error (__FILE__
, __LINE__
,
3809 _("could not find a target to attach"));
3813 target_thread_alive (ptid_t ptid
)
3815 struct target_ops
*t
;
3817 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3819 if (t
->to_thread_alive
!= NULL
)
3823 retval
= t
->to_thread_alive (t
, ptid
);
3825 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3826 ptid_get_pid (ptid
), retval
);
3836 target_find_new_threads (void)
3838 struct target_ops
*t
;
3840 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3842 if (t
->to_find_new_threads
!= NULL
)
3844 t
->to_find_new_threads (t
);
3846 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3854 target_stop (ptid_t ptid
)
3858 warning (_("May not interrupt or stop the target, ignoring attempt"));
3862 (*current_target
.to_stop
) (ptid
);
3866 debug_to_post_attach (int pid
)
3868 debug_target
.to_post_attach (pid
);
3870 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3873 /* Concatenate ELEM to LIST, a comma separate list, and return the
3874 result. The LIST incoming argument is released. */
3877 str_comma_list_concat_elem (char *list
, const char *elem
)
3880 return xstrdup (elem
);
3882 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3885 /* Helper for target_options_to_string. If OPT is present in
3886 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3887 Returns the new resulting string. OPT is removed from
3891 do_option (int *target_options
, char *ret
,
3892 int opt
, char *opt_str
)
3894 if ((*target_options
& opt
) != 0)
3896 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3897 *target_options
&= ~opt
;
3904 target_options_to_string (int target_options
)
3908 #define DO_TARG_OPTION(OPT) \
3909 ret = do_option (&target_options, ret, OPT, #OPT)
3911 DO_TARG_OPTION (TARGET_WNOHANG
);
3913 if (target_options
!= 0)
3914 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3922 debug_print_register (const char * func
,
3923 struct regcache
*regcache
, int regno
)
3925 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3927 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3928 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3929 && gdbarch_register_name (gdbarch
, regno
) != NULL
3930 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3931 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3932 gdbarch_register_name (gdbarch
, regno
));
3934 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3935 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3937 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3938 int i
, size
= register_size (gdbarch
, regno
);
3939 gdb_byte buf
[MAX_REGISTER_SIZE
];
3941 regcache_raw_collect (regcache
, regno
, buf
);
3942 fprintf_unfiltered (gdb_stdlog
, " = ");
3943 for (i
= 0; i
< size
; i
++)
3945 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3947 if (size
<= sizeof (LONGEST
))
3949 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3951 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3952 core_addr_to_string_nz (val
), plongest (val
));
3955 fprintf_unfiltered (gdb_stdlog
, "\n");
3959 target_fetch_registers (struct regcache
*regcache
, int regno
)
3961 struct target_ops
*t
;
3963 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3965 if (t
->to_fetch_registers
!= NULL
)
3967 t
->to_fetch_registers (t
, regcache
, regno
);
3969 debug_print_register ("target_fetch_registers", regcache
, regno
);
3976 target_store_registers (struct regcache
*regcache
, int regno
)
3978 struct target_ops
*t
;
3980 if (!may_write_registers
)
3981 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3983 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3985 if (t
->to_store_registers
!= NULL
)
3987 t
->to_store_registers (t
, regcache
, regno
);
3990 debug_print_register ("target_store_registers", regcache
, regno
);
4000 target_core_of_thread (ptid_t ptid
)
4002 struct target_ops
*t
;
4004 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4006 if (t
->to_core_of_thread
!= NULL
)
4008 int retval
= t
->to_core_of_thread (t
, ptid
);
4011 fprintf_unfiltered (gdb_stdlog
,
4012 "target_core_of_thread (%d) = %d\n",
4013 ptid_get_pid (ptid
), retval
);
4022 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
4024 struct target_ops
*t
;
4026 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4028 if (t
->to_verify_memory
!= NULL
)
4030 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
4033 fprintf_unfiltered (gdb_stdlog
,
4034 "target_verify_memory (%s, %s) = %d\n",
4035 paddress (target_gdbarch (), memaddr
),
4045 /* The documentation for this function is in its prototype declaration in
4049 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4051 struct target_ops
*t
;
4053 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4054 if (t
->to_insert_mask_watchpoint
!= NULL
)
4058 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
4061 fprintf_unfiltered (gdb_stdlog
, "\
4062 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
4063 core_addr_to_string (addr
),
4064 core_addr_to_string (mask
), rw
, ret
);
4072 /* The documentation for this function is in its prototype declaration in
4076 target_remove_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_remove_mask_watchpoint
!= NULL
)
4085 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
4088 fprintf_unfiltered (gdb_stdlog
, "\
4089 target_remove_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
4103 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4105 struct target_ops
*t
;
4107 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4108 if (t
->to_masked_watch_num_registers
!= NULL
)
4109 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4114 /* The documentation for this function is in its prototype declaration
4118 target_ranged_break_num_registers (void)
4120 struct target_ops
*t
;
4122 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4123 if (t
->to_ranged_break_num_registers
!= NULL
)
4124 return t
->to_ranged_break_num_registers (t
);
4132 target_supports_btrace (void)
4134 struct target_ops
*t
;
4136 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4137 if (t
->to_supports_btrace
!= NULL
)
4138 return t
->to_supports_btrace ();
4145 struct btrace_target_info
*
4146 target_enable_btrace (ptid_t ptid
)
4148 struct target_ops
*t
;
4150 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4151 if (t
->to_enable_btrace
!= NULL
)
4152 return t
->to_enable_btrace (ptid
);
4161 target_disable_btrace (struct btrace_target_info
*btinfo
)
4163 struct target_ops
*t
;
4165 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4166 if (t
->to_disable_btrace
!= NULL
)
4168 t
->to_disable_btrace (btinfo
);
4178 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4180 struct target_ops
*t
;
4182 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4183 if (t
->to_teardown_btrace
!= NULL
)
4185 t
->to_teardown_btrace (btinfo
);
4194 VEC (btrace_block_s
) *
4195 target_read_btrace (struct btrace_target_info
*btinfo
,
4196 enum btrace_read_type type
)
4198 struct target_ops
*t
;
4200 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4201 if (t
->to_read_btrace
!= NULL
)
4202 return t
->to_read_btrace (btinfo
, type
);
4211 target_stop_recording (void)
4213 struct target_ops
*t
;
4215 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4216 if (t
->to_stop_recording
!= NULL
)
4218 t
->to_stop_recording ();
4222 /* This is optional. */
4228 target_info_record (void)
4230 struct target_ops
*t
;
4232 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4233 if (t
->to_info_record
!= NULL
)
4235 t
->to_info_record ();
4245 target_save_record (const char *filename
)
4247 struct target_ops
*t
;
4249 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4250 if (t
->to_save_record
!= NULL
)
4252 t
->to_save_record (filename
);
4262 target_supports_delete_record (void)
4264 struct target_ops
*t
;
4266 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4267 if (t
->to_delete_record
!= NULL
)
4276 target_delete_record (void)
4278 struct target_ops
*t
;
4280 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4281 if (t
->to_delete_record
!= NULL
)
4283 t
->to_delete_record ();
4293 target_record_is_replaying (void)
4295 struct target_ops
*t
;
4297 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4298 if (t
->to_record_is_replaying
!= NULL
)
4299 return t
->to_record_is_replaying ();
4307 target_goto_record_begin (void)
4309 struct target_ops
*t
;
4311 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4312 if (t
->to_goto_record_begin
!= NULL
)
4314 t
->to_goto_record_begin ();
4324 target_goto_record_end (void)
4326 struct target_ops
*t
;
4328 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4329 if (t
->to_goto_record_end
!= NULL
)
4331 t
->to_goto_record_end ();
4341 target_goto_record (ULONGEST insn
)
4343 struct target_ops
*t
;
4345 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4346 if (t
->to_goto_record
!= NULL
)
4348 t
->to_goto_record (insn
);
4358 target_insn_history (int size
, int flags
)
4360 struct target_ops
*t
;
4362 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4363 if (t
->to_insn_history
!= NULL
)
4365 t
->to_insn_history (size
, flags
);
4375 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4377 struct target_ops
*t
;
4379 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4380 if (t
->to_insn_history_from
!= NULL
)
4382 t
->to_insn_history_from (from
, size
, flags
);
4392 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4394 struct target_ops
*t
;
4396 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4397 if (t
->to_insn_history_range
!= NULL
)
4399 t
->to_insn_history_range (begin
, end
, flags
);
4409 target_call_history (int size
, int flags
)
4411 struct target_ops
*t
;
4413 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4414 if (t
->to_call_history
!= NULL
)
4416 t
->to_call_history (size
, flags
);
4426 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4428 struct target_ops
*t
;
4430 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4431 if (t
->to_call_history_from
!= NULL
)
4433 t
->to_call_history_from (begin
, size
, flags
);
4443 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4445 struct target_ops
*t
;
4447 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4448 if (t
->to_call_history_range
!= NULL
)
4450 t
->to_call_history_range (begin
, end
, flags
);
4458 debug_to_prepare_to_store (struct regcache
*regcache
)
4460 debug_target
.to_prepare_to_store (regcache
);
4462 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4466 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4467 int write
, struct mem_attrib
*attrib
,
4468 struct target_ops
*target
)
4472 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4475 fprintf_unfiltered (gdb_stdlog
,
4476 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4477 paddress (target_gdbarch (), memaddr
), len
,
4478 write
? "write" : "read", retval
);
4484 fputs_unfiltered (", bytes =", gdb_stdlog
);
4485 for (i
= 0; i
< retval
; i
++)
4487 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4489 if (targetdebug
< 2 && i
> 0)
4491 fprintf_unfiltered (gdb_stdlog
, " ...");
4494 fprintf_unfiltered (gdb_stdlog
, "\n");
4497 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4501 fputc_unfiltered ('\n', gdb_stdlog
);
4507 debug_to_files_info (struct target_ops
*target
)
4509 debug_target
.to_files_info (target
);
4511 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4515 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
4516 struct bp_target_info
*bp_tgt
)
4520 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
4522 fprintf_unfiltered (gdb_stdlog
,
4523 "target_insert_breakpoint (%s, xxx) = %ld\n",
4524 core_addr_to_string (bp_tgt
->placed_address
),
4525 (unsigned long) retval
);
4530 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
4531 struct bp_target_info
*bp_tgt
)
4535 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
4537 fprintf_unfiltered (gdb_stdlog
,
4538 "target_remove_breakpoint (%s, xxx) = %ld\n",
4539 core_addr_to_string (bp_tgt
->placed_address
),
4540 (unsigned long) retval
);
4545 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
4549 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
4551 fprintf_unfiltered (gdb_stdlog
,
4552 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4553 (unsigned long) type
,
4554 (unsigned long) cnt
,
4555 (unsigned long) from_tty
,
4556 (unsigned long) retval
);
4561 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
4565 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
4567 fprintf_unfiltered (gdb_stdlog
,
4568 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4569 core_addr_to_string (addr
), (unsigned long) len
,
4570 core_addr_to_string (retval
));
4575 debug_to_can_accel_watchpoint_condition (CORE_ADDR addr
, int len
, int rw
,
4576 struct expression
*cond
)
4580 retval
= debug_target
.to_can_accel_watchpoint_condition (addr
, len
,
4583 fprintf_unfiltered (gdb_stdlog
,
4584 "target_can_accel_watchpoint_condition "
4585 "(%s, %d, %d, %s) = %ld\n",
4586 core_addr_to_string (addr
), len
, rw
,
4587 host_address_to_string (cond
), (unsigned long) retval
);
4592 debug_to_stopped_by_watchpoint (void)
4596 retval
= debug_target
.to_stopped_by_watchpoint ();
4598 fprintf_unfiltered (gdb_stdlog
,
4599 "target_stopped_by_watchpoint () = %ld\n",
4600 (unsigned long) retval
);
4605 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4609 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4611 fprintf_unfiltered (gdb_stdlog
,
4612 "target_stopped_data_address ([%s]) = %ld\n",
4613 core_addr_to_string (*addr
),
4614 (unsigned long)retval
);
4619 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4621 CORE_ADDR start
, int length
)
4625 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4628 fprintf_filtered (gdb_stdlog
,
4629 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4630 core_addr_to_string (addr
), core_addr_to_string (start
),
4636 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
4637 struct bp_target_info
*bp_tgt
)
4641 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
4643 fprintf_unfiltered (gdb_stdlog
,
4644 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4645 core_addr_to_string (bp_tgt
->placed_address
),
4646 (unsigned long) retval
);
4651 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
4652 struct bp_target_info
*bp_tgt
)
4656 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
4658 fprintf_unfiltered (gdb_stdlog
,
4659 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4660 core_addr_to_string (bp_tgt
->placed_address
),
4661 (unsigned long) retval
);
4666 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
4667 struct expression
*cond
)
4671 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
, cond
);
4673 fprintf_unfiltered (gdb_stdlog
,
4674 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4675 core_addr_to_string (addr
), len
, type
,
4676 host_address_to_string (cond
), (unsigned long) retval
);
4681 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
4682 struct expression
*cond
)
4686 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
, cond
);
4688 fprintf_unfiltered (gdb_stdlog
,
4689 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4690 core_addr_to_string (addr
), len
, type
,
4691 host_address_to_string (cond
), (unsigned long) retval
);
4696 debug_to_terminal_init (void)
4698 debug_target
.to_terminal_init ();
4700 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4704 debug_to_terminal_inferior (void)
4706 debug_target
.to_terminal_inferior ();
4708 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4712 debug_to_terminal_ours_for_output (void)
4714 debug_target
.to_terminal_ours_for_output ();
4716 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4720 debug_to_terminal_ours (void)
4722 debug_target
.to_terminal_ours ();
4724 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4728 debug_to_terminal_save_ours (void)
4730 debug_target
.to_terminal_save_ours ();
4732 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4736 debug_to_terminal_info (const char *arg
, int from_tty
)
4738 debug_target
.to_terminal_info (arg
, from_tty
);
4740 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4745 debug_to_load (char *args
, int from_tty
)
4747 debug_target
.to_load (args
, from_tty
);
4749 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4753 debug_to_post_startup_inferior (ptid_t ptid
)
4755 debug_target
.to_post_startup_inferior (ptid
);
4757 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4758 ptid_get_pid (ptid
));
4762 debug_to_insert_fork_catchpoint (int pid
)
4766 retval
= debug_target
.to_insert_fork_catchpoint (pid
);
4768 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4775 debug_to_remove_fork_catchpoint (int pid
)
4779 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
4781 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4788 debug_to_insert_vfork_catchpoint (int pid
)
4792 retval
= debug_target
.to_insert_vfork_catchpoint (pid
);
4794 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4801 debug_to_remove_vfork_catchpoint (int pid
)
4805 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
4807 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4814 debug_to_insert_exec_catchpoint (int pid
)
4818 retval
= debug_target
.to_insert_exec_catchpoint (pid
);
4820 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4827 debug_to_remove_exec_catchpoint (int pid
)
4831 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
4833 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4840 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
4844 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
4846 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4847 pid
, wait_status
, *exit_status
, has_exited
);
4853 debug_to_can_run (void)
4857 retval
= debug_target
.to_can_run ();
4859 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4864 static struct gdbarch
*
4865 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4867 struct gdbarch
*retval
;
4869 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4871 fprintf_unfiltered (gdb_stdlog
,
4872 "target_thread_architecture (%s) = %s [%s]\n",
4873 target_pid_to_str (ptid
),
4874 host_address_to_string (retval
),
4875 gdbarch_bfd_arch_info (retval
)->printable_name
);
4880 debug_to_stop (ptid_t ptid
)
4882 debug_target
.to_stop (ptid
);
4884 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4885 target_pid_to_str (ptid
));
4889 debug_to_rcmd (char *command
,
4890 struct ui_file
*outbuf
)
4892 debug_target
.to_rcmd (command
, outbuf
);
4893 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4897 debug_to_pid_to_exec_file (int pid
)
4901 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
4903 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4910 setup_target_debug (void)
4912 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4914 current_target
.to_open
= debug_to_open
;
4915 current_target
.to_post_attach
= debug_to_post_attach
;
4916 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4917 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4918 current_target
.to_files_info
= debug_to_files_info
;
4919 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4920 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4921 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4922 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4923 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4924 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4925 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4926 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4927 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4928 current_target
.to_watchpoint_addr_within_range
4929 = debug_to_watchpoint_addr_within_range
;
4930 current_target
.to_region_ok_for_hw_watchpoint
4931 = debug_to_region_ok_for_hw_watchpoint
;
4932 current_target
.to_can_accel_watchpoint_condition
4933 = debug_to_can_accel_watchpoint_condition
;
4934 current_target
.to_terminal_init
= debug_to_terminal_init
;
4935 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4936 current_target
.to_terminal_ours_for_output
4937 = debug_to_terminal_ours_for_output
;
4938 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4939 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4940 current_target
.to_terminal_info
= debug_to_terminal_info
;
4941 current_target
.to_load
= debug_to_load
;
4942 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4943 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4944 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4945 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4946 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4947 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4948 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4949 current_target
.to_has_exited
= debug_to_has_exited
;
4950 current_target
.to_can_run
= debug_to_can_run
;
4951 current_target
.to_stop
= debug_to_stop
;
4952 current_target
.to_rcmd
= debug_to_rcmd
;
4953 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4954 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4958 static char targ_desc
[] =
4959 "Names of targets and files being debugged.\nShows the entire \
4960 stack of targets currently in use (including the exec-file,\n\
4961 core-file, and process, if any), as well as the symbol file name.";
4964 do_monitor_command (char *cmd
,
4967 if ((current_target
.to_rcmd
4968 == (void (*) (char *, struct ui_file
*)) tcomplain
)
4969 || (current_target
.to_rcmd
== debug_to_rcmd
4970 && (debug_target
.to_rcmd
4971 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
4972 error (_("\"monitor\" command not supported by this target."));
4973 target_rcmd (cmd
, gdb_stdtarg
);
4976 /* Print the name of each layers of our target stack. */
4979 maintenance_print_target_stack (char *cmd
, int from_tty
)
4981 struct target_ops
*t
;
4983 printf_filtered (_("The current target stack is:\n"));
4985 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4987 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4991 /* Controls if async mode is permitted. */
4992 int target_async_permitted
= 0;
4994 /* The set command writes to this variable. If the inferior is
4995 executing, target_async_permitted is *not* updated. */
4996 static int target_async_permitted_1
= 0;
4999 set_target_async_command (char *args
, int from_tty
,
5000 struct cmd_list_element
*c
)
5002 if (have_live_inferiors ())
5004 target_async_permitted_1
= target_async_permitted
;
5005 error (_("Cannot change this setting while the inferior is running."));
5008 target_async_permitted
= target_async_permitted_1
;
5012 show_target_async_command (struct ui_file
*file
, int from_tty
,
5013 struct cmd_list_element
*c
,
5016 fprintf_filtered (file
,
5017 _("Controlling the inferior in "
5018 "asynchronous mode is %s.\n"), value
);
5021 /* Temporary copies of permission settings. */
5023 static int may_write_registers_1
= 1;
5024 static int may_write_memory_1
= 1;
5025 static int may_insert_breakpoints_1
= 1;
5026 static int may_insert_tracepoints_1
= 1;
5027 static int may_insert_fast_tracepoints_1
= 1;
5028 static int may_stop_1
= 1;
5030 /* Make the user-set values match the real values again. */
5033 update_target_permissions (void)
5035 may_write_registers_1
= may_write_registers
;
5036 may_write_memory_1
= may_write_memory
;
5037 may_insert_breakpoints_1
= may_insert_breakpoints
;
5038 may_insert_tracepoints_1
= may_insert_tracepoints
;
5039 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
5040 may_stop_1
= may_stop
;
5043 /* The one function handles (most of) the permission flags in the same
5047 set_target_permissions (char *args
, int from_tty
,
5048 struct cmd_list_element
*c
)
5050 if (target_has_execution
)
5052 update_target_permissions ();
5053 error (_("Cannot change this setting while the inferior is running."));
5056 /* Make the real values match the user-changed values. */
5057 may_write_registers
= may_write_registers_1
;
5058 may_insert_breakpoints
= may_insert_breakpoints_1
;
5059 may_insert_tracepoints
= may_insert_tracepoints_1
;
5060 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
5061 may_stop
= may_stop_1
;
5062 update_observer_mode ();
5065 /* Set memory write permission independently of observer mode. */
5068 set_write_memory_permission (char *args
, int from_tty
,
5069 struct cmd_list_element
*c
)
5071 /* Make the real values match the user-changed values. */
5072 may_write_memory
= may_write_memory_1
;
5073 update_observer_mode ();
5078 initialize_targets (void)
5080 init_dummy_target ();
5081 push_target (&dummy_target
);
5083 add_info ("target", target_info
, targ_desc
);
5084 add_info ("files", target_info
, targ_desc
);
5086 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
5087 Set target debugging."), _("\
5088 Show target debugging."), _("\
5089 When non-zero, target debugging is enabled. Higher numbers are more\n\
5090 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
5094 &setdebuglist
, &showdebuglist
);
5096 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
5097 &trust_readonly
, _("\
5098 Set mode for reading from readonly sections."), _("\
5099 Show mode for reading from readonly sections."), _("\
5100 When this mode is on, memory reads from readonly sections (such as .text)\n\
5101 will be read from the object file instead of from the target. This will\n\
5102 result in significant performance improvement for remote targets."),
5104 show_trust_readonly
,
5105 &setlist
, &showlist
);
5107 add_com ("monitor", class_obscure
, do_monitor_command
,
5108 _("Send a command to the remote monitor (remote targets only)."));
5110 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5111 _("Print the name of each layer of the internal target stack."),
5112 &maintenanceprintlist
);
5114 add_setshow_boolean_cmd ("target-async", no_class
,
5115 &target_async_permitted_1
, _("\
5116 Set whether gdb controls the inferior in asynchronous mode."), _("\
5117 Show whether gdb controls the inferior in asynchronous mode."), _("\
5118 Tells gdb whether to control the inferior in asynchronous mode."),
5119 set_target_async_command
,
5120 show_target_async_command
,
5124 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5125 &may_write_registers_1
, _("\
5126 Set permission to write into registers."), _("\
5127 Show permission to write into registers."), _("\
5128 When this permission is on, GDB may write into the target's registers.\n\
5129 Otherwise, any sort of write attempt will result in an error."),
5130 set_target_permissions
, NULL
,
5131 &setlist
, &showlist
);
5133 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5134 &may_write_memory_1
, _("\
5135 Set permission to write into target memory."), _("\
5136 Show permission to write into target memory."), _("\
5137 When this permission is on, GDB may write into the target's memory.\n\
5138 Otherwise, any sort of write attempt will result in an error."),
5139 set_write_memory_permission
, NULL
,
5140 &setlist
, &showlist
);
5142 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5143 &may_insert_breakpoints_1
, _("\
5144 Set permission to insert breakpoints in the target."), _("\
5145 Show permission to insert breakpoints in the target."), _("\
5146 When this permission is on, GDB may insert breakpoints in the program.\n\
5147 Otherwise, any sort of insertion attempt will result in an error."),
5148 set_target_permissions
, NULL
,
5149 &setlist
, &showlist
);
5151 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5152 &may_insert_tracepoints_1
, _("\
5153 Set permission to insert tracepoints in the target."), _("\
5154 Show permission to insert tracepoints in the target."), _("\
5155 When this permission is on, GDB may insert tracepoints in the program.\n\
5156 Otherwise, any sort of insertion attempt will result in an error."),
5157 set_target_permissions
, NULL
,
5158 &setlist
, &showlist
);
5160 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5161 &may_insert_fast_tracepoints_1
, _("\
5162 Set permission to insert fast tracepoints in the target."), _("\
5163 Show permission to insert fast tracepoints in the target."), _("\
5164 When this permission is on, GDB may insert fast tracepoints.\n\
5165 Otherwise, any sort of insertion attempt will result in an error."),
5166 set_target_permissions
, NULL
,
5167 &setlist
, &showlist
);
5169 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5171 Set permission to interrupt or signal the target."), _("\
5172 Show permission to interrupt or signal the target."), _("\
5173 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5174 Otherwise, any attempt to interrupt or stop will be ignored."),
5175 set_target_permissions
, NULL
,
5176 &setlist
, &showlist
);