1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
5 Free Software Foundation, Inc.
7 Contributed by Cygnus Support.
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "gdb_string.h"
38 #include "gdb_assert.h"
40 #include "exceptions.h"
41 #include "target-descriptions.h"
42 #include "gdbthread.h"
45 static void target_info (char *, int);
47 static void maybe_kill_then_attach (char *, int);
49 static void kill_or_be_killed (int);
51 static void default_terminal_info (char *, int);
53 static int default_watchpoint_addr_within_range (struct target_ops
*,
54 CORE_ADDR
, CORE_ADDR
, int);
56 static int default_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
58 static int nosymbol (char *, CORE_ADDR
*);
60 static void tcomplain (void) ATTR_NORETURN
;
62 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
64 static int return_zero (void);
66 static int return_one (void);
68 static int return_minus_one (void);
70 void target_ignore (void);
72 static void target_command (char *, int);
74 static struct target_ops
*find_default_run_target (char *);
76 static void nosupport_runtime (void);
78 static LONGEST
default_xfer_partial (struct target_ops
*ops
,
79 enum target_object object
,
80 const char *annex
, gdb_byte
*readbuf
,
81 const gdb_byte
*writebuf
,
82 ULONGEST offset
, LONGEST len
);
84 static LONGEST
current_xfer_partial (struct target_ops
*ops
,
85 enum target_object object
,
86 const char *annex
, gdb_byte
*readbuf
,
87 const gdb_byte
*writebuf
,
88 ULONGEST offset
, LONGEST len
);
90 static LONGEST
target_xfer_partial (struct target_ops
*ops
,
91 enum target_object object
,
93 void *readbuf
, const void *writebuf
,
94 ULONGEST offset
, LONGEST len
);
96 static void init_dummy_target (void);
98 static struct target_ops debug_target
;
100 static void debug_to_open (char *, int);
102 static void debug_to_close (int);
104 static void debug_to_attach (char *, int);
106 static void debug_to_detach (char *, int);
108 static void debug_to_resume (ptid_t
, int, enum target_signal
);
110 static ptid_t
debug_to_wait (ptid_t
, struct target_waitstatus
*);
112 static void debug_to_fetch_registers (struct regcache
*, int);
114 static void debug_to_store_registers (struct regcache
*, int);
116 static void debug_to_prepare_to_store (struct regcache
*);
118 static void debug_to_files_info (struct target_ops
*);
120 static int debug_to_insert_breakpoint (struct bp_target_info
*);
122 static int debug_to_remove_breakpoint (struct bp_target_info
*);
124 static int debug_to_can_use_hw_breakpoint (int, int, int);
126 static int debug_to_insert_hw_breakpoint (struct bp_target_info
*);
128 static int debug_to_remove_hw_breakpoint (struct bp_target_info
*);
130 static int debug_to_insert_watchpoint (CORE_ADDR
, int, int);
132 static int debug_to_remove_watchpoint (CORE_ADDR
, int, int);
134 static int debug_to_stopped_by_watchpoint (void);
136 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
138 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
139 CORE_ADDR
, CORE_ADDR
, int);
141 static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
143 static void debug_to_terminal_init (void);
145 static void debug_to_terminal_inferior (void);
147 static void debug_to_terminal_ours_for_output (void);
149 static void debug_to_terminal_save_ours (void);
151 static void debug_to_terminal_ours (void);
153 static void debug_to_terminal_info (char *, int);
155 static void debug_to_kill (void);
157 static void debug_to_load (char *, int);
159 static int debug_to_lookup_symbol (char *, CORE_ADDR
*);
161 static void debug_to_mourn_inferior (void);
163 static int debug_to_can_run (void);
165 static void debug_to_notice_signals (ptid_t
);
167 static int debug_to_thread_alive (ptid_t
);
169 static void debug_to_stop (ptid_t
);
171 /* NOTE: cagney/2004-09-29: Many targets reference this variable in
172 wierd and mysterious ways. Putting the variable here lets those
173 wierd and mysterious ways keep building while they are being
174 converted to the inferior inheritance structure. */
175 struct target_ops deprecated_child_ops
;
177 /* Pointer to array of target architecture structures; the size of the
178 array; the current index into the array; the allocated size of the
180 struct target_ops
**target_structs
;
181 unsigned target_struct_size
;
182 unsigned target_struct_index
;
183 unsigned target_struct_allocsize
;
184 #define DEFAULT_ALLOCSIZE 10
186 /* The initial current target, so that there is always a semi-valid
189 static struct target_ops dummy_target
;
191 /* Top of target stack. */
193 static struct target_ops
*target_stack
;
195 /* The target structure we are currently using to talk to a process
196 or file or whatever "inferior" we have. */
198 struct target_ops current_target
;
200 /* Command list for target. */
202 static struct cmd_list_element
*targetlist
= NULL
;
204 /* Nonzero if we are debugging an attached outside process
205 rather than an inferior. */
209 /* Nonzero if we should trust readonly sections from the
210 executable when reading memory. */
212 static int trust_readonly
= 0;
214 /* Nonzero if we should show true memory content including
215 memory breakpoint inserted by gdb. */
217 static int show_memory_breakpoints
= 0;
219 /* Non-zero if we want to see trace of target level stuff. */
221 static int targetdebug
= 0;
223 show_targetdebug (struct ui_file
*file
, int from_tty
,
224 struct cmd_list_element
*c
, const char *value
)
226 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
229 static void setup_target_debug (void);
231 DCACHE
*target_dcache
;
233 /* The user just typed 'target' without the name of a target. */
236 target_command (char *arg
, int from_tty
)
238 fputs_filtered ("Argument required (target name). Try `help target'\n",
242 /* Add a possible target architecture to the list. */
245 add_target (struct target_ops
*t
)
247 /* Provide default values for all "must have" methods. */
248 if (t
->to_xfer_partial
== NULL
)
249 t
->to_xfer_partial
= default_xfer_partial
;
253 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
254 target_structs
= (struct target_ops
**) xmalloc
255 (target_struct_allocsize
* sizeof (*target_structs
));
257 if (target_struct_size
>= target_struct_allocsize
)
259 target_struct_allocsize
*= 2;
260 target_structs
= (struct target_ops
**)
261 xrealloc ((char *) target_structs
,
262 target_struct_allocsize
* sizeof (*target_structs
));
264 target_structs
[target_struct_size
++] = t
;
266 if (targetlist
== NULL
)
267 add_prefix_cmd ("target", class_run
, target_command
, _("\
268 Connect to a target machine or process.\n\
269 The first argument is the type or protocol of the target machine.\n\
270 Remaining arguments are interpreted by the target protocol. For more\n\
271 information on the arguments for a particular protocol, type\n\
272 `help target ' followed by the protocol name."),
273 &targetlist
, "target ", 0, &cmdlist
);
274 add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
285 target_load (char *arg
, int from_tty
)
287 dcache_invalidate (target_dcache
);
288 (*current_target
.to_load
) (arg
, from_tty
);
292 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
293 struct target_ops
*t
)
295 errno
= EIO
; /* Can't read/write this location */
296 return 0; /* No bytes handled */
302 error (_("You can't do that when your target is `%s'"),
303 current_target
.to_shortname
);
309 error (_("You can't do that without a process to debug."));
313 nosymbol (char *name
, CORE_ADDR
*addrp
)
315 return 1; /* Symbol does not exist in target env */
319 nosupport_runtime (void)
321 if (ptid_equal (inferior_ptid
, null_ptid
))
324 error (_("No run-time support for this"));
329 default_terminal_info (char *args
, int from_tty
)
331 printf_unfiltered (_("No saved terminal information.\n"));
334 /* This is the default target_create_inferior and target_attach function.
335 If the current target is executing, it asks whether to kill it off.
336 If this function returns without calling error(), it has killed off
337 the target, and the operation should be attempted. */
340 kill_or_be_killed (int from_tty
)
342 if (target_has_execution
)
344 printf_unfiltered (_("You are already running a program:\n"));
345 target_files_info ();
346 if (query ("Kill it? "))
349 if (target_has_execution
)
350 error (_("Killing the program did not help."));
355 error (_("Program not killed."));
362 maybe_kill_then_attach (char *args
, int from_tty
)
364 kill_or_be_killed (from_tty
);
365 target_attach (args
, from_tty
);
369 maybe_kill_then_create_inferior (char *exec
, char *args
, char **env
,
372 kill_or_be_killed (0);
373 target_create_inferior (exec
, args
, env
, from_tty
);
376 /* Go through the target stack from top to bottom, copying over zero
377 entries in current_target, then filling in still empty entries. In
378 effect, we are doing class inheritance through the pushed target
381 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
382 is currently implemented, is that it discards any knowledge of
383 which target an inherited method originally belonged to.
384 Consequently, new new target methods should instead explicitly and
385 locally search the target stack for the target that can handle the
389 update_current_target (void)
391 struct target_ops
*t
;
393 /* First, reset current's contents. */
394 memset (¤t_target
, 0, sizeof (current_target
));
396 #define INHERIT(FIELD, TARGET) \
397 if (!current_target.FIELD) \
398 current_target.FIELD = (TARGET)->FIELD
400 for (t
= target_stack
; t
; t
= t
->beneath
)
402 INHERIT (to_shortname
, t
);
403 INHERIT (to_longname
, t
);
405 INHERIT (to_open
, t
);
406 INHERIT (to_close
, t
);
407 INHERIT (to_attach
, t
);
408 INHERIT (to_post_attach
, t
);
409 INHERIT (to_attach_no_wait
, t
);
410 INHERIT (to_detach
, t
);
411 /* Do not inherit to_disconnect. */
412 INHERIT (to_resume
, t
);
413 INHERIT (to_wait
, t
);
414 INHERIT (to_fetch_registers
, t
);
415 INHERIT (to_store_registers
, t
);
416 INHERIT (to_prepare_to_store
, t
);
417 INHERIT (deprecated_xfer_memory
, t
);
418 INHERIT (to_files_info
, t
);
419 INHERIT (to_insert_breakpoint
, t
);
420 INHERIT (to_remove_breakpoint
, t
);
421 INHERIT (to_can_use_hw_breakpoint
, t
);
422 INHERIT (to_insert_hw_breakpoint
, t
);
423 INHERIT (to_remove_hw_breakpoint
, t
);
424 INHERIT (to_insert_watchpoint
, t
);
425 INHERIT (to_remove_watchpoint
, t
);
426 INHERIT (to_stopped_data_address
, t
);
427 INHERIT (to_have_steppable_watchpoint
, t
);
428 INHERIT (to_have_continuable_watchpoint
, t
);
429 INHERIT (to_stopped_by_watchpoint
, t
);
430 INHERIT (to_watchpoint_addr_within_range
, t
);
431 INHERIT (to_region_ok_for_hw_watchpoint
, t
);
432 INHERIT (to_terminal_init
, t
);
433 INHERIT (to_terminal_inferior
, t
);
434 INHERIT (to_terminal_ours_for_output
, t
);
435 INHERIT (to_terminal_ours
, t
);
436 INHERIT (to_terminal_save_ours
, t
);
437 INHERIT (to_terminal_info
, t
);
438 INHERIT (to_kill
, t
);
439 INHERIT (to_load
, t
);
440 INHERIT (to_lookup_symbol
, t
);
441 INHERIT (to_create_inferior
, t
);
442 INHERIT (to_post_startup_inferior
, t
);
443 INHERIT (to_acknowledge_created_inferior
, t
);
444 INHERIT (to_insert_fork_catchpoint
, t
);
445 INHERIT (to_remove_fork_catchpoint
, t
);
446 INHERIT (to_insert_vfork_catchpoint
, t
);
447 INHERIT (to_remove_vfork_catchpoint
, t
);
448 /* Do not inherit to_follow_fork. */
449 INHERIT (to_insert_exec_catchpoint
, t
);
450 INHERIT (to_remove_exec_catchpoint
, t
);
451 INHERIT (to_has_exited
, t
);
452 INHERIT (to_mourn_inferior
, t
);
453 INHERIT (to_can_run
, t
);
454 INHERIT (to_notice_signals
, t
);
455 INHERIT (to_thread_alive
, t
);
456 INHERIT (to_find_new_threads
, t
);
457 INHERIT (to_pid_to_str
, t
);
458 INHERIT (to_extra_thread_info
, t
);
459 INHERIT (to_stop
, t
);
460 /* Do not inherit to_xfer_partial. */
461 INHERIT (to_rcmd
, t
);
462 INHERIT (to_pid_to_exec_file
, t
);
463 INHERIT (to_log_command
, t
);
464 INHERIT (to_stratum
, t
);
465 INHERIT (to_has_all_memory
, t
);
466 INHERIT (to_has_memory
, t
);
467 INHERIT (to_has_stack
, t
);
468 INHERIT (to_has_registers
, t
);
469 INHERIT (to_has_execution
, t
);
470 INHERIT (to_has_thread_control
, t
);
471 INHERIT (to_sections
, t
);
472 INHERIT (to_sections_end
, t
);
473 INHERIT (to_can_async_p
, t
);
474 INHERIT (to_is_async_p
, t
);
475 INHERIT (to_async
, t
);
476 INHERIT (to_async_mask
, t
);
477 INHERIT (to_find_memory_regions
, t
);
478 INHERIT (to_make_corefile_notes
, t
);
479 INHERIT (to_get_thread_local_address
, t
);
480 /* Do not inherit to_read_description. */
481 /* Do not inherit to_search_memory. */
482 INHERIT (to_magic
, t
);
483 /* Do not inherit to_memory_map. */
484 /* Do not inherit to_flash_erase. */
485 /* Do not inherit to_flash_done. */
489 /* Clean up a target struct so it no longer has any zero pointers in
490 it. Some entries are defaulted to a method that print an error,
491 others are hard-wired to a standard recursive default. */
493 #define de_fault(field, value) \
494 if (!current_target.field) \
495 current_target.field = value
498 (void (*) (char *, int))
504 maybe_kill_then_attach
);
505 de_fault (to_post_attach
,
509 (void (*) (char *, int))
512 (void (*) (ptid_t
, int, enum target_signal
))
515 (ptid_t (*) (ptid_t
, struct target_waitstatus
*))
517 de_fault (to_fetch_registers
,
518 (void (*) (struct regcache
*, int))
520 de_fault (to_store_registers
,
521 (void (*) (struct regcache
*, int))
523 de_fault (to_prepare_to_store
,
524 (void (*) (struct regcache
*))
526 de_fault (deprecated_xfer_memory
,
527 (int (*) (CORE_ADDR
, gdb_byte
*, int, int, struct mem_attrib
*, struct target_ops
*))
529 de_fault (to_files_info
,
530 (void (*) (struct target_ops
*))
532 de_fault (to_insert_breakpoint
,
533 memory_insert_breakpoint
);
534 de_fault (to_remove_breakpoint
,
535 memory_remove_breakpoint
);
536 de_fault (to_can_use_hw_breakpoint
,
537 (int (*) (int, int, int))
539 de_fault (to_insert_hw_breakpoint
,
540 (int (*) (struct bp_target_info
*))
542 de_fault (to_remove_hw_breakpoint
,
543 (int (*) (struct bp_target_info
*))
545 de_fault (to_insert_watchpoint
,
546 (int (*) (CORE_ADDR
, int, int))
548 de_fault (to_remove_watchpoint
,
549 (int (*) (CORE_ADDR
, int, int))
551 de_fault (to_stopped_by_watchpoint
,
554 de_fault (to_stopped_data_address
,
555 (int (*) (struct target_ops
*, CORE_ADDR
*))
557 de_fault (to_watchpoint_addr_within_range
,
558 default_watchpoint_addr_within_range
);
559 de_fault (to_region_ok_for_hw_watchpoint
,
560 default_region_ok_for_hw_watchpoint
);
561 de_fault (to_terminal_init
,
564 de_fault (to_terminal_inferior
,
567 de_fault (to_terminal_ours_for_output
,
570 de_fault (to_terminal_ours
,
573 de_fault (to_terminal_save_ours
,
576 de_fault (to_terminal_info
,
577 default_terminal_info
);
582 (void (*) (char *, int))
584 de_fault (to_lookup_symbol
,
585 (int (*) (char *, CORE_ADDR
*))
587 de_fault (to_create_inferior
,
588 maybe_kill_then_create_inferior
);
589 de_fault (to_post_startup_inferior
,
592 de_fault (to_acknowledge_created_inferior
,
595 de_fault (to_insert_fork_catchpoint
,
598 de_fault (to_remove_fork_catchpoint
,
601 de_fault (to_insert_vfork_catchpoint
,
604 de_fault (to_remove_vfork_catchpoint
,
607 de_fault (to_insert_exec_catchpoint
,
610 de_fault (to_remove_exec_catchpoint
,
613 de_fault (to_has_exited
,
614 (int (*) (int, int, int *))
616 de_fault (to_mourn_inferior
,
619 de_fault (to_can_run
,
621 de_fault (to_notice_signals
,
624 de_fault (to_thread_alive
,
627 de_fault (to_find_new_threads
,
630 de_fault (to_extra_thread_info
,
631 (char *(*) (struct thread_info
*))
636 current_target
.to_xfer_partial
= current_xfer_partial
;
638 (void (*) (char *, struct ui_file
*))
640 de_fault (to_pid_to_exec_file
,
643 de_fault (to_can_async_p
,
646 de_fault (to_is_async_p
,
650 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
652 de_fault (to_async_mask
,
655 current_target
.to_read_description
= NULL
;
658 /* Finally, position the target-stack beneath the squashed
659 "current_target". That way code looking for a non-inherited
660 target method can quickly and simply find it. */
661 current_target
.beneath
= target_stack
;
664 setup_target_debug ();
667 /* Mark OPS as a running target. This reverses the effect
668 of target_mark_exited. */
671 target_mark_running (struct target_ops
*ops
)
673 struct target_ops
*t
;
675 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
679 internal_error (__FILE__
, __LINE__
,
680 "Attempted to mark unpushed target \"%s\" as running",
683 ops
->to_has_execution
= 1;
684 ops
->to_has_all_memory
= 1;
685 ops
->to_has_memory
= 1;
686 ops
->to_has_stack
= 1;
687 ops
->to_has_registers
= 1;
689 update_current_target ();
692 /* Mark OPS as a non-running target. This reverses the effect
693 of target_mark_running. */
696 target_mark_exited (struct target_ops
*ops
)
698 struct target_ops
*t
;
700 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
704 internal_error (__FILE__
, __LINE__
,
705 "Attempted to mark unpushed target \"%s\" as running",
708 ops
->to_has_execution
= 0;
709 ops
->to_has_all_memory
= 0;
710 ops
->to_has_memory
= 0;
711 ops
->to_has_stack
= 0;
712 ops
->to_has_registers
= 0;
714 update_current_target ();
717 /* Push a new target type into the stack of the existing target accessors,
718 possibly superseding some of the existing accessors.
720 Result is zero if the pushed target ended up on top of the stack,
721 nonzero if at least one target is on top of it.
723 Rather than allow an empty stack, we always have the dummy target at
724 the bottom stratum, so we can call the function vectors without
728 push_target (struct target_ops
*t
)
730 struct target_ops
**cur
;
732 /* Check magic number. If wrong, it probably means someone changed
733 the struct definition, but not all the places that initialize one. */
734 if (t
->to_magic
!= OPS_MAGIC
)
736 fprintf_unfiltered (gdb_stderr
,
737 "Magic number of %s target struct wrong\n",
739 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
742 /* Find the proper stratum to install this target in. */
743 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
745 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
749 /* If there's already targets at this stratum, remove them. */
750 /* FIXME: cagney/2003-10-15: I think this should be popping all
751 targets to CUR, and not just those at this stratum level. */
752 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
754 /* There's already something at this stratum level. Close it,
755 and un-hook it from the stack. */
756 struct target_ops
*tmp
= (*cur
);
757 (*cur
) = (*cur
)->beneath
;
759 target_close (tmp
, 0);
762 /* We have removed all targets in our stratum, now add the new one. */
766 update_current_target ();
769 return (t
!= target_stack
);
772 /* Remove a target_ops vector from the stack, wherever it may be.
773 Return how many times it was removed (0 or 1). */
776 unpush_target (struct target_ops
*t
)
778 struct target_ops
**cur
;
779 struct target_ops
*tmp
;
781 /* Look for the specified target. Note that we assume that a target
782 can only occur once in the target stack. */
784 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
791 return 0; /* Didn't find target_ops, quit now */
793 /* NOTE: cagney/2003-12-06: In '94 the close call was made
794 unconditional by moving it to before the above check that the
795 target was in the target stack (something about "Change the way
796 pushing and popping of targets work to support target overlays
797 and inheritance"). This doesn't make much sense - only open
798 targets should be closed. */
801 /* Unchain the target */
803 (*cur
) = (*cur
)->beneath
;
806 update_current_target ();
814 target_close (¤t_target
, 0); /* Let it clean up */
815 if (unpush_target (target_stack
) == 1)
818 fprintf_unfiltered (gdb_stderr
,
819 "pop_target couldn't find target %s\n",
820 current_target
.to_shortname
);
821 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
824 /* Using the objfile specified in OBJFILE, find the address for the
825 current thread's thread-local storage with offset OFFSET. */
827 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
829 volatile CORE_ADDR addr
= 0;
831 if (target_get_thread_local_address_p ()
832 && gdbarch_fetch_tls_load_module_address_p (current_gdbarch
))
834 ptid_t ptid
= inferior_ptid
;
835 volatile struct gdb_exception ex
;
837 TRY_CATCH (ex
, RETURN_MASK_ALL
)
841 /* Fetch the load module address for this objfile. */
842 lm_addr
= gdbarch_fetch_tls_load_module_address (current_gdbarch
,
844 /* If it's 0, throw the appropriate exception. */
846 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
847 _("TLS load module not found"));
849 addr
= target_get_thread_local_address (ptid
, lm_addr
, offset
);
851 /* If an error occurred, print TLS related messages here. Otherwise,
852 throw the error to some higher catcher. */
855 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
859 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
860 error (_("Cannot find thread-local variables in this thread library."));
862 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
863 if (objfile_is_library
)
864 error (_("Cannot find shared library `%s' in dynamic"
865 " linker's load module list"), objfile
->name
);
867 error (_("Cannot find executable file `%s' in dynamic"
868 " linker's load module list"), objfile
->name
);
870 case TLS_NOT_ALLOCATED_YET_ERROR
:
871 if (objfile_is_library
)
872 error (_("The inferior has not yet allocated storage for"
873 " thread-local variables in\n"
874 "the shared library `%s'\n"
876 objfile
->name
, target_pid_to_str (ptid
));
878 error (_("The inferior has not yet allocated storage for"
879 " thread-local variables in\n"
880 "the executable `%s'\n"
882 objfile
->name
, target_pid_to_str (ptid
));
884 case TLS_GENERIC_ERROR
:
885 if (objfile_is_library
)
886 error (_("Cannot find thread-local storage for %s, "
887 "shared library %s:\n%s"),
888 target_pid_to_str (ptid
),
889 objfile
->name
, ex
.message
);
891 error (_("Cannot find thread-local storage for %s, "
892 "executable file %s:\n%s"),
893 target_pid_to_str (ptid
),
894 objfile
->name
, ex
.message
);
897 throw_exception (ex
);
902 /* It wouldn't be wrong here to try a gdbarch method, too; finding
903 TLS is an ABI-specific thing. But we don't do that yet. */
905 error (_("Cannot find thread-local variables on this target"));
911 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
913 /* target_read_string -- read a null terminated string, up to LEN bytes,
914 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
915 Set *STRING to a pointer to malloc'd memory containing the data; the caller
916 is responsible for freeing it. Return the number of bytes successfully
920 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
922 int tlen
, origlen
, offset
, i
;
926 int buffer_allocated
;
928 unsigned int nbytes_read
= 0;
932 /* Small for testing. */
933 buffer_allocated
= 4;
934 buffer
= xmalloc (buffer_allocated
);
941 tlen
= MIN (len
, 4 - (memaddr
& 3));
942 offset
= memaddr
& 3;
944 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
947 /* The transfer request might have crossed the boundary to an
948 unallocated region of memory. Retry the transfer, requesting
952 errcode
= target_read_memory (memaddr
, buf
, 1);
957 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
960 bytes
= bufptr
- buffer
;
961 buffer_allocated
*= 2;
962 buffer
= xrealloc (buffer
, buffer_allocated
);
963 bufptr
= buffer
+ bytes
;
966 for (i
= 0; i
< tlen
; i
++)
968 *bufptr
++ = buf
[i
+ offset
];
969 if (buf
[i
+ offset
] == '\000')
971 nbytes_read
+= i
+ 1;
987 /* Find a section containing ADDR. */
988 struct section_table
*
989 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
991 struct section_table
*secp
;
992 for (secp
= target
->to_sections
;
993 secp
< target
->to_sections_end
;
996 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1002 /* Perform a partial memory transfer. The arguments and return
1003 value are just as for target_xfer_partial. */
1006 memory_xfer_partial (struct target_ops
*ops
, void *readbuf
, const void *writebuf
,
1007 ULONGEST memaddr
, LONGEST len
)
1011 struct mem_region
*region
;
1013 /* Zero length requests are ok and require no work. */
1017 /* Try the executable file, if "trust-readonly-sections" is set. */
1018 if (readbuf
!= NULL
&& trust_readonly
)
1020 struct section_table
*secp
;
1022 secp
= target_section_by_addr (ops
, memaddr
);
1024 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1026 return xfer_memory (memaddr
, readbuf
, len
, 0, NULL
, ops
);
1029 /* Likewise for accesses to unmapped overlay sections. */
1030 if (readbuf
!= NULL
&& overlay_debugging
)
1032 asection
*section
= find_pc_overlay (memaddr
);
1033 if (pc_in_unmapped_range (memaddr
, section
))
1034 return xfer_memory (memaddr
, readbuf
, len
, 0, NULL
, ops
);
1037 /* Try GDB's internal data cache. */
1038 region
= lookup_mem_region (memaddr
);
1039 /* region->hi == 0 means there's no upper bound. */
1040 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1043 reg_len
= region
->hi
- memaddr
;
1045 switch (region
->attrib
.mode
)
1048 if (writebuf
!= NULL
)
1053 if (readbuf
!= NULL
)
1058 /* We only support writing to flash during "load" for now. */
1059 if (writebuf
!= NULL
)
1060 error (_("Writing to flash memory forbidden in this context"));
1067 if (region
->attrib
.cache
)
1069 /* FIXME drow/2006-08-09: This call discards OPS, so the raw
1070 memory request will start back at current_target. */
1071 if (readbuf
!= NULL
)
1072 res
= dcache_xfer_memory (target_dcache
, memaddr
, readbuf
,
1075 /* FIXME drow/2006-08-09: If we're going to preserve const
1076 correctness dcache_xfer_memory should take readbuf and
1078 res
= dcache_xfer_memory (target_dcache
, memaddr
,
1085 if (readbuf
&& !show_memory_breakpoints
)
1086 breakpoint_restore_shadows (readbuf
, memaddr
, reg_len
);
1091 /* If none of those methods found the memory we wanted, fall back
1092 to a target partial transfer. Normally a single call to
1093 to_xfer_partial is enough; if it doesn't recognize an object
1094 it will call the to_xfer_partial of the next target down.
1095 But for memory this won't do. Memory is the only target
1096 object which can be read from more than one valid target.
1097 A core file, for instance, could have some of memory but
1098 delegate other bits to the target below it. So, we must
1099 manually try all targets. */
1103 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1104 readbuf
, writebuf
, memaddr
, reg_len
);
1108 /* We want to continue past core files to executables, but not
1109 past a running target's memory. */
1110 if (ops
->to_has_all_memory
)
1115 while (ops
!= NULL
);
1117 if (readbuf
&& !show_memory_breakpoints
)
1118 breakpoint_restore_shadows (readbuf
, memaddr
, reg_len
);
1120 /* If we still haven't got anything, return the last error. We
1126 restore_show_memory_breakpoints (void *arg
)
1128 show_memory_breakpoints
= (uintptr_t) arg
;
1132 make_show_memory_breakpoints_cleanup (int show
)
1134 int current
= show_memory_breakpoints
;
1135 show_memory_breakpoints
= show
;
1137 return make_cleanup (restore_show_memory_breakpoints
,
1138 (void *) (uintptr_t) current
);
1142 target_xfer_partial (struct target_ops
*ops
,
1143 enum target_object object
, const char *annex
,
1144 void *readbuf
, const void *writebuf
,
1145 ULONGEST offset
, LONGEST len
)
1149 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1151 /* If this is a memory transfer, let the memory-specific code
1152 have a look at it instead. Memory transfers are more
1154 if (object
== TARGET_OBJECT_MEMORY
)
1155 retval
= memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
);
1158 enum target_object raw_object
= object
;
1160 /* If this is a raw memory transfer, request the normal
1161 memory object from other layers. */
1162 if (raw_object
== TARGET_OBJECT_RAW_MEMORY
)
1163 raw_object
= TARGET_OBJECT_MEMORY
;
1165 retval
= ops
->to_xfer_partial (ops
, raw_object
, annex
, readbuf
,
1166 writebuf
, offset
, len
);
1171 const unsigned char *myaddr
= NULL
;
1173 fprintf_unfiltered (gdb_stdlog
,
1174 "%s:target_xfer_partial (%d, %s, 0x%lx, 0x%lx, 0x%s, %s) = %s",
1177 (annex
? annex
: "(null)"),
1178 (long) readbuf
, (long) writebuf
,
1179 paddr_nz (offset
), paddr_d (len
), paddr_d (retval
));
1185 if (retval
> 0 && myaddr
!= NULL
)
1189 fputs_unfiltered (", bytes =", gdb_stdlog
);
1190 for (i
= 0; i
< retval
; i
++)
1192 if ((((long) &(myaddr
[i
])) & 0xf) == 0)
1194 if (targetdebug
< 2 && i
> 0)
1196 fprintf_unfiltered (gdb_stdlog
, " ...");
1199 fprintf_unfiltered (gdb_stdlog
, "\n");
1202 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1206 fputc_unfiltered ('\n', gdb_stdlog
);
1211 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
1212 GDB's memory at MYADDR. Returns either 0 for success or an errno value
1213 if any error occurs.
1215 If an error occurs, no guarantee is made about the contents of the data at
1216 MYADDR. In particular, the caller should not depend upon partial reads
1217 filling the buffer with good data. There is no way for the caller to know
1218 how much good data might have been transfered anyway. Callers that can
1219 deal with partial reads should call target_read (which will retry until
1220 it makes no progress, and then return how much was transferred). */
1223 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
1225 if (target_read (¤t_target
, TARGET_OBJECT_MEMORY
, NULL
,
1226 myaddr
, memaddr
, len
) == len
)
1233 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
1235 if (target_write (¤t_target
, TARGET_OBJECT_MEMORY
, NULL
,
1236 myaddr
, memaddr
, len
) == len
)
1242 /* Fetch the target's memory map. */
1245 target_memory_map (void)
1247 VEC(mem_region_s
) *result
;
1248 struct mem_region
*last_one
, *this_one
;
1250 struct target_ops
*t
;
1253 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1255 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1256 if (t
->to_memory_map
!= NULL
)
1262 result
= t
->to_memory_map (t
);
1266 qsort (VEC_address (mem_region_s
, result
),
1267 VEC_length (mem_region_s
, result
),
1268 sizeof (struct mem_region
), mem_region_cmp
);
1270 /* Check that regions do not overlap. Simultaneously assign
1271 a numbering for the "mem" commands to use to refer to
1274 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1276 this_one
->number
= ix
;
1278 if (last_one
&& last_one
->hi
> this_one
->lo
)
1280 warning (_("Overlapping regions in memory map: ignoring"));
1281 VEC_free (mem_region_s
, result
);
1284 last_one
= this_one
;
1291 target_flash_erase (ULONGEST address
, LONGEST length
)
1293 struct target_ops
*t
;
1295 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1296 if (t
->to_flash_erase
!= NULL
)
1299 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1300 paddr (address
), phex (length
, 0));
1301 t
->to_flash_erase (t
, address
, length
);
1309 target_flash_done (void)
1311 struct target_ops
*t
;
1313 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1314 if (t
->to_flash_done
!= NULL
)
1317 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1318 t
->to_flash_done (t
);
1325 #ifndef target_stopped_data_address_p
1327 target_stopped_data_address_p (struct target_ops
*target
)
1329 if (target
->to_stopped_data_address
1330 == (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
)
1332 if (target
->to_stopped_data_address
== debug_to_stopped_data_address
1333 && (debug_target
.to_stopped_data_address
1334 == (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
))
1341 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1342 struct cmd_list_element
*c
, const char *value
)
1344 fprintf_filtered (file
, _("\
1345 Mode for reading from readonly sections is %s.\n"),
1349 /* More generic transfers. */
1352 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1353 const char *annex
, gdb_byte
*readbuf
,
1354 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1356 if (object
== TARGET_OBJECT_MEMORY
1357 && ops
->deprecated_xfer_memory
!= NULL
)
1358 /* If available, fall back to the target's
1359 "deprecated_xfer_memory" method. */
1363 if (writebuf
!= NULL
)
1365 void *buffer
= xmalloc (len
);
1366 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1367 memcpy (buffer
, writebuf
, len
);
1368 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1369 1/*write*/, NULL
, ops
);
1370 do_cleanups (cleanup
);
1372 if (readbuf
!= NULL
)
1373 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1374 0/*read*/, NULL
, ops
);
1377 else if (xfered
== 0 && errno
== 0)
1378 /* "deprecated_xfer_memory" uses 0, cross checked against
1379 ERRNO as one indication of an error. */
1384 else if (ops
->beneath
!= NULL
)
1385 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1386 readbuf
, writebuf
, offset
, len
);
1391 /* The xfer_partial handler for the topmost target. Unlike the default,
1392 it does not need to handle memory specially; it just passes all
1393 requests down the stack. */
1396 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1397 const char *annex
, gdb_byte
*readbuf
,
1398 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1400 if (ops
->beneath
!= NULL
)
1401 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1402 readbuf
, writebuf
, offset
, len
);
1407 /* Target vector read/write partial wrapper functions.
1409 NOTE: cagney/2003-10-21: I wonder if having "to_xfer_partial
1410 (inbuf, outbuf)", instead of separate read/write methods, make life
1414 target_read_partial (struct target_ops
*ops
,
1415 enum target_object object
,
1416 const char *annex
, gdb_byte
*buf
,
1417 ULONGEST offset
, LONGEST len
)
1419 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
1423 target_write_partial (struct target_ops
*ops
,
1424 enum target_object object
,
1425 const char *annex
, const gdb_byte
*buf
,
1426 ULONGEST offset
, LONGEST len
)
1428 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
1431 /* Wrappers to perform the full transfer. */
1433 target_read (struct target_ops
*ops
,
1434 enum target_object object
,
1435 const char *annex
, gdb_byte
*buf
,
1436 ULONGEST offset
, LONGEST len
)
1439 while (xfered
< len
)
1441 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
1442 (gdb_byte
*) buf
+ xfered
,
1443 offset
+ xfered
, len
- xfered
);
1444 /* Call an observer, notifying them of the xfer progress? */
1456 target_read_until_error (struct target_ops
*ops
,
1457 enum target_object object
,
1458 const char *annex
, gdb_byte
*buf
,
1459 ULONGEST offset
, LONGEST len
)
1462 while (xfered
< len
)
1464 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
1465 (gdb_byte
*) buf
+ xfered
,
1466 offset
+ xfered
, len
- xfered
);
1467 /* Call an observer, notifying them of the xfer progress? */
1472 /* We've got an error. Try to read in smaller blocks. */
1473 ULONGEST start
= offset
+ xfered
;
1474 ULONGEST remaining
= len
- xfered
;
1477 /* If an attempt was made to read a random memory address,
1478 it's likely that the very first byte is not accessible.
1479 Try reading the first byte, to avoid doing log N tries
1481 xfer
= target_read_partial (ops
, object
, annex
,
1482 (gdb_byte
*) buf
+ xfered
, start
, 1);
1491 xfer
= target_read_partial (ops
, object
, annex
,
1492 (gdb_byte
*) buf
+ xfered
,
1502 /* We have successfully read the first half. So, the
1503 error must be in the second half. Adjust start and
1504 remaining to point at the second half. */
1521 /* An alternative to target_write with progress callbacks. */
1524 target_write_with_progress (struct target_ops
*ops
,
1525 enum target_object object
,
1526 const char *annex
, const gdb_byte
*buf
,
1527 ULONGEST offset
, LONGEST len
,
1528 void (*progress
) (ULONGEST
, void *), void *baton
)
1532 /* Give the progress callback a chance to set up. */
1534 (*progress
) (0, baton
);
1536 while (xfered
< len
)
1538 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
1539 (gdb_byte
*) buf
+ xfered
,
1540 offset
+ xfered
, len
- xfered
);
1548 (*progress
) (xfer
, baton
);
1557 target_write (struct target_ops
*ops
,
1558 enum target_object object
,
1559 const char *annex
, const gdb_byte
*buf
,
1560 ULONGEST offset
, LONGEST len
)
1562 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
1566 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
1567 the size of the transferred data. PADDING additional bytes are
1568 available in *BUF_P. This is a helper function for
1569 target_read_alloc; see the declaration of that function for more
1573 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
1574 const char *annex
, gdb_byte
**buf_p
, int padding
)
1576 size_t buf_alloc
, buf_pos
;
1580 /* This function does not have a length parameter; it reads the
1581 entire OBJECT). Also, it doesn't support objects fetched partly
1582 from one target and partly from another (in a different stratum,
1583 e.g. a core file and an executable). Both reasons make it
1584 unsuitable for reading memory. */
1585 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
1587 /* Start by reading up to 4K at a time. The target will throttle
1588 this number down if necessary. */
1590 buf
= xmalloc (buf_alloc
);
1594 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
1595 buf_pos
, buf_alloc
- buf_pos
- padding
);
1598 /* An error occurred. */
1604 /* Read all there was. */
1614 /* If the buffer is filling up, expand it. */
1615 if (buf_alloc
< buf_pos
* 2)
1618 buf
= xrealloc (buf
, buf_alloc
);
1625 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
1626 the size of the transferred data. See the declaration in "target.h"
1627 function for more information about the return value. */
1630 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
1631 const char *annex
, gdb_byte
**buf_p
)
1633 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
1636 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
1637 returned as a string, allocated using xmalloc. If an error occurs
1638 or the transfer is unsupported, NULL is returned. Empty objects
1639 are returned as allocated but empty strings. A warning is issued
1640 if the result contains any embedded NUL bytes. */
1643 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
1647 LONGEST transferred
;
1649 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
1651 if (transferred
< 0)
1654 if (transferred
== 0)
1655 return xstrdup ("");
1657 buffer
[transferred
] = 0;
1658 if (strlen (buffer
) < transferred
)
1659 warning (_("target object %d, annex %s, "
1660 "contained unexpected null characters"),
1661 (int) object
, annex
? annex
: "(none)");
1663 return (char *) buffer
;
1666 /* Memory transfer methods. */
1669 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
1672 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
, buf
, addr
, len
)
1674 memory_error (EIO
, addr
);
1678 get_target_memory_unsigned (struct target_ops
*ops
,
1679 CORE_ADDR addr
, int len
)
1681 gdb_byte buf
[sizeof (ULONGEST
)];
1683 gdb_assert (len
<= sizeof (buf
));
1684 get_target_memory (ops
, addr
, buf
, len
);
1685 return extract_unsigned_integer (buf
, len
);
1689 target_info (char *args
, int from_tty
)
1691 struct target_ops
*t
;
1692 int has_all_mem
= 0;
1694 if (symfile_objfile
!= NULL
)
1695 printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile
->name
);
1697 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
1699 if (!t
->to_has_memory
)
1702 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
1705 printf_unfiltered (_("\tWhile running this, GDB does not access memory from...\n"));
1706 printf_unfiltered ("%s:\n", t
->to_longname
);
1707 (t
->to_files_info
) (t
);
1708 has_all_mem
= t
->to_has_all_memory
;
1712 /* This function is called before any new inferior is created, e.g.
1713 by running a program, attaching, or connecting to a target.
1714 It cleans up any state from previous invocations which might
1715 change between runs. This is a subset of what target_preopen
1716 resets (things which might change between targets). */
1719 target_pre_inferior (int from_tty
)
1721 /* Clear out solib state. Otherwise the solib state of the previous
1722 inferior might have survived and is entirely wrong for the new
1723 target. This has been observed on GNU/Linux using glibc 2.3. How
1735 Cannot access memory at address 0xdeadbeef
1737 no_shared_libraries (NULL
, from_tty
);
1739 invalidate_target_mem_regions ();
1741 target_clear_description ();
1744 /* This is to be called by the open routine before it does
1748 target_preopen (int from_tty
)
1752 if (target_has_execution
)
1755 || query (_("A program is being debugged already. Kill it? ")))
1758 error (_("Program not killed."));
1761 /* Calling target_kill may remove the target from the stack. But if
1762 it doesn't (which seems like a win for UDI), remove it now. */
1764 if (target_has_execution
)
1767 target_pre_inferior (from_tty
);
1770 /* Detach a target after doing deferred register stores. */
1773 target_detach (char *args
, int from_tty
)
1775 /* If we're in breakpoints-always-inserted mode, have to
1776 remove them before detaching. */
1777 remove_breakpoints ();
1779 (current_target
.to_detach
) (args
, from_tty
);
1783 target_disconnect (char *args
, int from_tty
)
1785 struct target_ops
*t
;
1787 /* If we're in breakpoints-always-inserted mode, have to
1788 remove them before disconnecting. */
1789 remove_breakpoints ();
1791 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1792 if (t
->to_disconnect
!= NULL
)
1795 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
1797 t
->to_disconnect (t
, args
, from_tty
);
1805 target_resume (ptid_t ptid
, int step
, enum target_signal signal
)
1807 dcache_invalidate (target_dcache
);
1808 (*current_target
.to_resume
) (ptid
, step
, signal
);
1809 set_executing (ptid
, 1);
1810 set_running (ptid
, 1);
1812 /* Look through the list of possible targets for a target that can
1816 target_follow_fork (int follow_child
)
1818 struct target_ops
*t
;
1820 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1822 if (t
->to_follow_fork
!= NULL
)
1824 int retval
= t
->to_follow_fork (t
, follow_child
);
1826 fprintf_unfiltered (gdb_stdlog
, "target_follow_fork (%d) = %d\n",
1827 follow_child
, retval
);
1832 /* Some target returned a fork event, but did not know how to follow it. */
1833 internal_error (__FILE__
, __LINE__
,
1834 "could not find a target to follow fork");
1837 /* Look for a target which can describe architectural features, starting
1838 from TARGET. If we find one, return its description. */
1840 const struct target_desc
*
1841 target_read_description (struct target_ops
*target
)
1843 struct target_ops
*t
;
1845 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1846 if (t
->to_read_description
!= NULL
)
1848 const struct target_desc
*tdesc
;
1850 tdesc
= t
->to_read_description (t
);
1858 /* The default implementation of to_search_memory.
1859 This implements a basic search of memory, reading target memory and
1860 performing the search here (as opposed to performing the search in on the
1861 target side with, for example, gdbserver). */
1864 simple_search_memory (struct target_ops
*ops
,
1865 CORE_ADDR start_addr
, ULONGEST search_space_len
,
1866 const gdb_byte
*pattern
, ULONGEST pattern_len
,
1867 CORE_ADDR
*found_addrp
)
1869 /* NOTE: also defined in find.c testcase. */
1870 #define SEARCH_CHUNK_SIZE 16000
1871 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
1872 /* Buffer to hold memory contents for searching. */
1873 gdb_byte
*search_buf
;
1874 unsigned search_buf_size
;
1875 struct cleanup
*old_cleanups
;
1877 search_buf_size
= chunk_size
+ pattern_len
- 1;
1879 /* No point in trying to allocate a buffer larger than the search space. */
1880 if (search_space_len
< search_buf_size
)
1881 search_buf_size
= search_space_len
;
1883 search_buf
= malloc (search_buf_size
);
1884 if (search_buf
== NULL
)
1885 error (_("Unable to allocate memory to perform the search."));
1886 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
1888 /* Prime the search buffer. */
1890 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1891 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
1893 warning (_("Unable to access target memory at %s, halting search."),
1894 hex_string (start_addr
));
1895 do_cleanups (old_cleanups
);
1899 /* Perform the search.
1901 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
1902 When we've scanned N bytes we copy the trailing bytes to the start and
1903 read in another N bytes. */
1905 while (search_space_len
>= pattern_len
)
1907 gdb_byte
*found_ptr
;
1908 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
1910 found_ptr
= memmem (search_buf
, nr_search_bytes
,
1911 pattern
, pattern_len
);
1913 if (found_ptr
!= NULL
)
1915 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
1916 *found_addrp
= found_addr
;
1917 do_cleanups (old_cleanups
);
1921 /* Not found in this chunk, skip to next chunk. */
1923 /* Don't let search_space_len wrap here, it's unsigned. */
1924 if (search_space_len
>= chunk_size
)
1925 search_space_len
-= chunk_size
;
1927 search_space_len
= 0;
1929 if (search_space_len
>= pattern_len
)
1931 unsigned keep_len
= search_buf_size
- chunk_size
;
1932 CORE_ADDR read_addr
= start_addr
+ keep_len
;
1935 /* Copy the trailing part of the previous iteration to the front
1936 of the buffer for the next iteration. */
1937 gdb_assert (keep_len
== pattern_len
- 1);
1938 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
1940 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
1942 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1943 search_buf
+ keep_len
, read_addr
,
1944 nr_to_read
) != nr_to_read
)
1946 warning (_("Unable to access target memory at %s, halting search."),
1947 hex_string (read_addr
));
1948 do_cleanups (old_cleanups
);
1952 start_addr
+= chunk_size
;
1958 do_cleanups (old_cleanups
);
1962 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
1963 sequence of bytes in PATTERN with length PATTERN_LEN.
1965 The result is 1 if found, 0 if not found, and -1 if there was an error
1966 requiring halting of the search (e.g. memory read error).
1967 If the pattern is found the address is recorded in FOUND_ADDRP. */
1970 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
1971 const gdb_byte
*pattern
, ULONGEST pattern_len
,
1972 CORE_ADDR
*found_addrp
)
1974 struct target_ops
*t
;
1977 /* We don't use INHERIT to set current_target.to_search_memory,
1978 so we have to scan the target stack and handle targetdebug
1982 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
1983 hex_string (start_addr
));
1985 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1986 if (t
->to_search_memory
!= NULL
)
1991 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
1992 pattern
, pattern_len
, found_addrp
);
1996 /* If a special version of to_search_memory isn't available, use the
1998 found
= simple_search_memory (¤t_target
,
1999 start_addr
, search_space_len
,
2000 pattern
, pattern_len
, found_addrp
);
2004 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2009 /* Look through the currently pushed targets. If none of them will
2010 be able to restart the currently running process, issue an error
2014 target_require_runnable (void)
2016 struct target_ops
*t
;
2018 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2020 /* If this target knows how to create a new program, then
2021 assume we will still be able to after killing the current
2022 one. Either killing and mourning will not pop T, or else
2023 find_default_run_target will find it again. */
2024 if (t
->to_create_inferior
!= NULL
)
2027 /* Do not worry about thread_stratum targets that can not
2028 create inferiors. Assume they will be pushed again if
2029 necessary, and continue to the process_stratum. */
2030 if (t
->to_stratum
== thread_stratum
)
2034 The \"%s\" target does not support \"run\". Try \"help target\" or \"continue\"."),
2038 /* This function is only called if the target is running. In that
2039 case there should have been a process_stratum target and it
2040 should either know how to create inferiors, or not... */
2041 internal_error (__FILE__
, __LINE__
, "No targets found");
2044 /* Look through the list of possible targets for a target that can
2045 execute a run or attach command without any other data. This is
2046 used to locate the default process stratum.
2048 If DO_MESG is not NULL, the result is always valid (error() is
2049 called for errors); else, return NULL on error. */
2051 static struct target_ops
*
2052 find_default_run_target (char *do_mesg
)
2054 struct target_ops
**t
;
2055 struct target_ops
*runable
= NULL
;
2060 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2063 if ((*t
)->to_can_run
&& target_can_run (*t
))
2073 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
2082 find_default_attach (char *args
, int from_tty
)
2084 struct target_ops
*t
;
2086 t
= find_default_run_target ("attach");
2087 (t
->to_attach
) (args
, from_tty
);
2092 find_default_create_inferior (char *exec_file
, char *allargs
, char **env
,
2095 struct target_ops
*t
;
2097 t
= find_default_run_target ("run");
2098 (t
->to_create_inferior
) (exec_file
, allargs
, env
, from_tty
);
2103 find_default_can_async_p (void)
2105 struct target_ops
*t
;
2107 /* This may be called before the target is pushed on the stack;
2108 look for the default process stratum. If there's none, gdb isn't
2109 configured with a native debugger, and target remote isn't
2111 t
= find_default_run_target (NULL
);
2112 if (t
&& t
->to_can_async_p
)
2113 return (t
->to_can_async_p
) ();
2118 find_default_is_async_p (void)
2120 struct target_ops
*t
;
2122 /* This may be called before the target is pushed on the stack;
2123 look for the default process stratum. If there's none, gdb isn't
2124 configured with a native debugger, and target remote isn't
2126 t
= find_default_run_target (NULL
);
2127 if (t
&& t
->to_is_async_p
)
2128 return (t
->to_is_async_p
) ();
2133 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
2135 return (len
<= TYPE_LENGTH (builtin_type_void_data_ptr
));
2139 default_watchpoint_addr_within_range (struct target_ops
*target
,
2141 CORE_ADDR start
, int length
)
2143 return addr
>= start
&& addr
< start
+ length
;
2159 return_minus_one (void)
2165 * Resize the to_sections pointer. Also make sure that anyone that
2166 * was holding on to an old value of it gets updated.
2167 * Returns the old size.
2171 target_resize_to_sections (struct target_ops
*target
, int num_added
)
2173 struct target_ops
**t
;
2174 struct section_table
*old_value
;
2177 old_value
= target
->to_sections
;
2179 if (target
->to_sections
)
2181 old_count
= target
->to_sections_end
- target
->to_sections
;
2182 target
->to_sections
= (struct section_table
*)
2183 xrealloc ((char *) target
->to_sections
,
2184 (sizeof (struct section_table
)) * (num_added
+ old_count
));
2189 target
->to_sections
= (struct section_table
*)
2190 xmalloc ((sizeof (struct section_table
)) * num_added
);
2192 target
->to_sections_end
= target
->to_sections
+ (num_added
+ old_count
);
2194 /* Check to see if anyone else was pointing to this structure.
2195 If old_value was null, then no one was. */
2199 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2202 if ((*t
)->to_sections
== old_value
)
2204 (*t
)->to_sections
= target
->to_sections
;
2205 (*t
)->to_sections_end
= target
->to_sections_end
;
2208 /* There is a flattened view of the target stack in current_target,
2209 so its to_sections pointer might also need updating. */
2210 if (current_target
.to_sections
== old_value
)
2212 current_target
.to_sections
= target
->to_sections
;
2213 current_target
.to_sections_end
= target
->to_sections_end
;
2221 /* Remove all target sections taken from ABFD.
2223 Scan the current target stack for targets whose section tables
2224 refer to sections from BFD, and remove those sections. We use this
2225 when we notice that the inferior has unloaded a shared object, for
2228 remove_target_sections (bfd
*abfd
)
2230 struct target_ops
**t
;
2232 for (t
= target_structs
; t
< target_structs
+ target_struct_size
; t
++)
2234 struct section_table
*src
, *dest
;
2236 dest
= (*t
)->to_sections
;
2237 for (src
= (*t
)->to_sections
; src
< (*t
)->to_sections_end
; src
++)
2238 if (src
->bfd
!= abfd
)
2240 /* Keep this section. */
2241 if (dest
< src
) *dest
= *src
;
2245 /* If we've dropped any sections, resize the section table. */
2247 target_resize_to_sections (*t
, dest
- src
);
2254 /* Find a single runnable target in the stack and return it. If for
2255 some reason there is more than one, return NULL. */
2258 find_run_target (void)
2260 struct target_ops
**t
;
2261 struct target_ops
*runable
= NULL
;
2266 for (t
= target_structs
; t
< target_structs
+ target_struct_size
; ++t
)
2268 if ((*t
)->to_can_run
&& target_can_run (*t
))
2275 return (count
== 1 ? runable
: NULL
);
2278 /* Find a single core_stratum target in the list of targets and return it.
2279 If for some reason there is more than one, return NULL. */
2282 find_core_target (void)
2284 struct target_ops
**t
;
2285 struct target_ops
*runable
= NULL
;
2290 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2293 if ((*t
)->to_stratum
== core_stratum
)
2300 return (count
== 1 ? runable
: NULL
);
2304 * Find the next target down the stack from the specified target.
2308 find_target_beneath (struct target_ops
*t
)
2314 /* The inferior process has died. Long live the inferior! */
2317 generic_mourn_inferior (void)
2319 extern int show_breakpoint_hit_counts
;
2321 inferior_ptid
= null_ptid
;
2323 breakpoint_init_inferior (inf_exited
);
2324 registers_changed ();
2326 reopen_exec_file ();
2327 reinit_frame_cache ();
2329 /* It is confusing to the user for ignore counts to stick around
2330 from previous runs of the inferior. So clear them. */
2331 /* However, it is more confusing for the ignore counts to disappear when
2332 using hit counts. So don't clear them if we're counting hits. */
2333 if (!show_breakpoint_hit_counts
)
2334 breakpoint_clear_ignore_counts ();
2336 if (deprecated_detach_hook
)
2337 deprecated_detach_hook ();
2340 /* Helper function for child_wait and the derivatives of child_wait.
2341 HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
2342 translation of that in OURSTATUS. */
2344 store_waitstatus (struct target_waitstatus
*ourstatus
, int hoststatus
)
2346 if (WIFEXITED (hoststatus
))
2348 ourstatus
->kind
= TARGET_WAITKIND_EXITED
;
2349 ourstatus
->value
.integer
= WEXITSTATUS (hoststatus
);
2351 else if (!WIFSTOPPED (hoststatus
))
2353 ourstatus
->kind
= TARGET_WAITKIND_SIGNALLED
;
2354 ourstatus
->value
.sig
= target_signal_from_host (WTERMSIG (hoststatus
));
2358 ourstatus
->kind
= TARGET_WAITKIND_STOPPED
;
2359 ourstatus
->value
.sig
= target_signal_from_host (WSTOPSIG (hoststatus
));
2363 /* Returns zero to leave the inferior alone, one to interrupt it. */
2364 int (*target_activity_function
) (void);
2365 int target_activity_fd
;
2367 /* Convert a normal process ID to a string. Returns the string in a
2371 normal_pid_to_str (ptid_t ptid
)
2373 static char buf
[32];
2375 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
2379 /* Error-catcher for target_find_memory_regions */
2380 static int dummy_find_memory_regions (int (*ignore1
) (), void *ignore2
)
2382 error (_("No target."));
2386 /* Error-catcher for target_make_corefile_notes */
2387 static char * dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
2389 error (_("No target."));
2393 /* Set up the handful of non-empty slots needed by the dummy target
2397 init_dummy_target (void)
2399 dummy_target
.to_shortname
= "None";
2400 dummy_target
.to_longname
= "None";
2401 dummy_target
.to_doc
= "";
2402 dummy_target
.to_attach
= find_default_attach
;
2403 dummy_target
.to_create_inferior
= find_default_create_inferior
;
2404 dummy_target
.to_can_async_p
= find_default_can_async_p
;
2405 dummy_target
.to_is_async_p
= find_default_is_async_p
;
2406 dummy_target
.to_pid_to_str
= normal_pid_to_str
;
2407 dummy_target
.to_stratum
= dummy_stratum
;
2408 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
2409 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
2410 dummy_target
.to_xfer_partial
= default_xfer_partial
;
2411 dummy_target
.to_magic
= OPS_MAGIC
;
2415 debug_to_open (char *args
, int from_tty
)
2417 debug_target
.to_open (args
, from_tty
);
2419 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
2423 debug_to_close (int quitting
)
2425 target_close (&debug_target
, quitting
);
2426 fprintf_unfiltered (gdb_stdlog
, "target_close (%d)\n", quitting
);
2430 target_close (struct target_ops
*targ
, int quitting
)
2432 if (targ
->to_xclose
!= NULL
)
2433 targ
->to_xclose (targ
, quitting
);
2434 else if (targ
->to_close
!= NULL
)
2435 targ
->to_close (quitting
);
2439 debug_to_attach (char *args
, int from_tty
)
2441 debug_target
.to_attach (args
, from_tty
);
2443 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n", args
, from_tty
);
2448 debug_to_post_attach (int pid
)
2450 debug_target
.to_post_attach (pid
);
2452 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
2456 debug_to_detach (char *args
, int from_tty
)
2458 debug_target
.to_detach (args
, from_tty
);
2460 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n", args
, from_tty
);
2464 debug_to_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2466 debug_target
.to_resume (ptid
, step
, siggnal
);
2468 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n", PIDGET (ptid
),
2469 step
? "step" : "continue",
2470 target_signal_to_name (siggnal
));
2474 debug_to_wait (ptid_t ptid
, struct target_waitstatus
*status
)
2478 retval
= debug_target
.to_wait (ptid
, status
);
2480 fprintf_unfiltered (gdb_stdlog
,
2481 "target_wait (%d, status) = %d, ", PIDGET (ptid
),
2483 fprintf_unfiltered (gdb_stdlog
, "status->kind = ");
2484 switch (status
->kind
)
2486 case TARGET_WAITKIND_EXITED
:
2487 fprintf_unfiltered (gdb_stdlog
, "exited, status = %d\n",
2488 status
->value
.integer
);
2490 case TARGET_WAITKIND_STOPPED
:
2491 fprintf_unfiltered (gdb_stdlog
, "stopped, signal = %s\n",
2492 target_signal_to_name (status
->value
.sig
));
2494 case TARGET_WAITKIND_SIGNALLED
:
2495 fprintf_unfiltered (gdb_stdlog
, "signalled, signal = %s\n",
2496 target_signal_to_name (status
->value
.sig
));
2498 case TARGET_WAITKIND_LOADED
:
2499 fprintf_unfiltered (gdb_stdlog
, "loaded\n");
2501 case TARGET_WAITKIND_FORKED
:
2502 fprintf_unfiltered (gdb_stdlog
, "forked\n");
2504 case TARGET_WAITKIND_VFORKED
:
2505 fprintf_unfiltered (gdb_stdlog
, "vforked\n");
2507 case TARGET_WAITKIND_EXECD
:
2508 fprintf_unfiltered (gdb_stdlog
, "execd\n");
2510 case TARGET_WAITKIND_SPURIOUS
:
2511 fprintf_unfiltered (gdb_stdlog
, "spurious\n");
2514 fprintf_unfiltered (gdb_stdlog
, "unknown???\n");
2522 debug_print_register (const char * func
,
2523 struct regcache
*regcache
, int regno
)
2525 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
2526 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
2527 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
2528 + gdbarch_num_pseudo_regs (gdbarch
)
2529 && gdbarch_register_name (gdbarch
, regno
) != NULL
2530 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
2531 fprintf_unfiltered (gdb_stdlog
, "(%s)",
2532 gdbarch_register_name (gdbarch
, regno
));
2534 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
2537 int i
, size
= register_size (gdbarch
, regno
);
2538 unsigned char buf
[MAX_REGISTER_SIZE
];
2539 regcache_cooked_read (regcache
, regno
, buf
);
2540 fprintf_unfiltered (gdb_stdlog
, " = ");
2541 for (i
= 0; i
< size
; i
++)
2543 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
2545 if (size
<= sizeof (LONGEST
))
2547 ULONGEST val
= extract_unsigned_integer (buf
, size
);
2548 fprintf_unfiltered (gdb_stdlog
, " 0x%s %s",
2549 paddr_nz (val
), paddr_d (val
));
2552 fprintf_unfiltered (gdb_stdlog
, "\n");
2556 debug_to_fetch_registers (struct regcache
*regcache
, int regno
)
2558 debug_target
.to_fetch_registers (regcache
, regno
);
2559 debug_print_register ("target_fetch_registers", regcache
, regno
);
2563 debug_to_store_registers (struct regcache
*regcache
, int regno
)
2565 debug_target
.to_store_registers (regcache
, regno
);
2566 debug_print_register ("target_store_registers", regcache
, regno
);
2567 fprintf_unfiltered (gdb_stdlog
, "\n");
2571 debug_to_prepare_to_store (struct regcache
*regcache
)
2573 debug_target
.to_prepare_to_store (regcache
);
2575 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
2579 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
2580 int write
, struct mem_attrib
*attrib
,
2581 struct target_ops
*target
)
2585 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
2588 fprintf_unfiltered (gdb_stdlog
,
2589 "target_xfer_memory (0x%x, xxx, %d, %s, xxx) = %d",
2590 (unsigned int) memaddr
, /* possable truncate long long */
2591 len
, write
? "write" : "read", retval
);
2597 fputs_unfiltered (", bytes =", gdb_stdlog
);
2598 for (i
= 0; i
< retval
; i
++)
2600 if ((((long) &(myaddr
[i
])) & 0xf) == 0)
2602 if (targetdebug
< 2 && i
> 0)
2604 fprintf_unfiltered (gdb_stdlog
, " ...");
2607 fprintf_unfiltered (gdb_stdlog
, "\n");
2610 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
2614 fputc_unfiltered ('\n', gdb_stdlog
);
2620 debug_to_files_info (struct target_ops
*target
)
2622 debug_target
.to_files_info (target
);
2624 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
2628 debug_to_insert_breakpoint (struct bp_target_info
*bp_tgt
)
2632 retval
= debug_target
.to_insert_breakpoint (bp_tgt
);
2634 fprintf_unfiltered (gdb_stdlog
,
2635 "target_insert_breakpoint (0x%lx, xxx) = %ld\n",
2636 (unsigned long) bp_tgt
->placed_address
,
2637 (unsigned long) retval
);
2642 debug_to_remove_breakpoint (struct bp_target_info
*bp_tgt
)
2646 retval
= debug_target
.to_remove_breakpoint (bp_tgt
);
2648 fprintf_unfiltered (gdb_stdlog
,
2649 "target_remove_breakpoint (0x%lx, xxx) = %ld\n",
2650 (unsigned long) bp_tgt
->placed_address
,
2651 (unsigned long) retval
);
2656 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
2660 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
2662 fprintf_unfiltered (gdb_stdlog
,
2663 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
2664 (unsigned long) type
,
2665 (unsigned long) cnt
,
2666 (unsigned long) from_tty
,
2667 (unsigned long) retval
);
2672 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
2676 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
2678 fprintf_unfiltered (gdb_stdlog
,
2679 "TARGET_REGION_OK_FOR_HW_WATCHPOINT (%ld, %ld) = 0x%lx\n",
2680 (unsigned long) addr
,
2681 (unsigned long) len
,
2682 (unsigned long) retval
);
2687 debug_to_stopped_by_watchpoint (void)
2691 retval
= debug_target
.to_stopped_by_watchpoint ();
2693 fprintf_unfiltered (gdb_stdlog
,
2694 "STOPPED_BY_WATCHPOINT () = %ld\n",
2695 (unsigned long) retval
);
2700 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
2704 retval
= debug_target
.to_stopped_data_address (target
, addr
);
2706 fprintf_unfiltered (gdb_stdlog
,
2707 "target_stopped_data_address ([0x%lx]) = %ld\n",
2708 (unsigned long)*addr
,
2709 (unsigned long)retval
);
2714 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
2716 CORE_ADDR start
, int length
)
2720 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
2723 fprintf_filtered (gdb_stdlog
,
2724 "target_watchpoint_addr_within_range (0x%lx, 0x%lx, %d) = %d\n",
2725 (unsigned long) addr
, (unsigned long) start
, length
,
2731 debug_to_insert_hw_breakpoint (struct bp_target_info
*bp_tgt
)
2735 retval
= debug_target
.to_insert_hw_breakpoint (bp_tgt
);
2737 fprintf_unfiltered (gdb_stdlog
,
2738 "target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n",
2739 (unsigned long) bp_tgt
->placed_address
,
2740 (unsigned long) retval
);
2745 debug_to_remove_hw_breakpoint (struct bp_target_info
*bp_tgt
)
2749 retval
= debug_target
.to_remove_hw_breakpoint (bp_tgt
);
2751 fprintf_unfiltered (gdb_stdlog
,
2752 "target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n",
2753 (unsigned long) bp_tgt
->placed_address
,
2754 (unsigned long) retval
);
2759 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
2763 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
);
2765 fprintf_unfiltered (gdb_stdlog
,
2766 "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n",
2767 (unsigned long) addr
, len
, type
, (unsigned long) retval
);
2772 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
2776 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
);
2778 fprintf_unfiltered (gdb_stdlog
,
2779 "target_remove_watchpoint (0x%lx, %d, %d) = %ld\n",
2780 (unsigned long) addr
, len
, type
, (unsigned long) retval
);
2785 debug_to_terminal_init (void)
2787 debug_target
.to_terminal_init ();
2789 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
2793 debug_to_terminal_inferior (void)
2795 debug_target
.to_terminal_inferior ();
2797 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
2801 debug_to_terminal_ours_for_output (void)
2803 debug_target
.to_terminal_ours_for_output ();
2805 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
2809 debug_to_terminal_ours (void)
2811 debug_target
.to_terminal_ours ();
2813 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
2817 debug_to_terminal_save_ours (void)
2819 debug_target
.to_terminal_save_ours ();
2821 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
2825 debug_to_terminal_info (char *arg
, int from_tty
)
2827 debug_target
.to_terminal_info (arg
, from_tty
);
2829 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
2834 debug_to_kill (void)
2836 debug_target
.to_kill ();
2838 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
2842 debug_to_load (char *args
, int from_tty
)
2844 debug_target
.to_load (args
, from_tty
);
2846 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
2850 debug_to_lookup_symbol (char *name
, CORE_ADDR
*addrp
)
2854 retval
= debug_target
.to_lookup_symbol (name
, addrp
);
2856 fprintf_unfiltered (gdb_stdlog
, "target_lookup_symbol (%s, xxx)\n", name
);
2862 debug_to_create_inferior (char *exec_file
, char *args
, char **env
,
2865 debug_target
.to_create_inferior (exec_file
, args
, env
, from_tty
);
2867 fprintf_unfiltered (gdb_stdlog
, "target_create_inferior (%s, %s, xxx, %d)\n",
2868 exec_file
, args
, from_tty
);
2872 debug_to_post_startup_inferior (ptid_t ptid
)
2874 debug_target
.to_post_startup_inferior (ptid
);
2876 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
2881 debug_to_acknowledge_created_inferior (int pid
)
2883 debug_target
.to_acknowledge_created_inferior (pid
);
2885 fprintf_unfiltered (gdb_stdlog
, "target_acknowledge_created_inferior (%d)\n",
2890 debug_to_insert_fork_catchpoint (int pid
)
2892 debug_target
.to_insert_fork_catchpoint (pid
);
2894 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d)\n",
2899 debug_to_remove_fork_catchpoint (int pid
)
2903 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
2905 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
2912 debug_to_insert_vfork_catchpoint (int pid
)
2914 debug_target
.to_insert_vfork_catchpoint (pid
);
2916 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d)\n",
2921 debug_to_remove_vfork_catchpoint (int pid
)
2925 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
2927 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
2934 debug_to_insert_exec_catchpoint (int pid
)
2936 debug_target
.to_insert_exec_catchpoint (pid
);
2938 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d)\n",
2943 debug_to_remove_exec_catchpoint (int pid
)
2947 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
2949 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
2956 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
2960 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
2962 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
2963 pid
, wait_status
, *exit_status
, has_exited
);
2969 debug_to_mourn_inferior (void)
2971 debug_target
.to_mourn_inferior ();
2973 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2977 debug_to_can_run (void)
2981 retval
= debug_target
.to_can_run ();
2983 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
2989 debug_to_notice_signals (ptid_t ptid
)
2991 debug_target
.to_notice_signals (ptid
);
2993 fprintf_unfiltered (gdb_stdlog
, "target_notice_signals (%d)\n",
2998 debug_to_thread_alive (ptid_t ptid
)
3002 retval
= debug_target
.to_thread_alive (ptid
);
3004 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3005 PIDGET (ptid
), retval
);
3011 debug_to_find_new_threads (void)
3013 debug_target
.to_find_new_threads ();
3015 fputs_unfiltered ("target_find_new_threads ()\n", gdb_stdlog
);
3019 debug_to_stop (ptid_t ptid
)
3021 debug_target
.to_stop (ptid
);
3023 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
3024 target_pid_to_str (ptid
));
3028 debug_to_rcmd (char *command
,
3029 struct ui_file
*outbuf
)
3031 debug_target
.to_rcmd (command
, outbuf
);
3032 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
3036 debug_to_pid_to_exec_file (int pid
)
3040 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
3042 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
3049 setup_target_debug (void)
3051 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
3053 current_target
.to_open
= debug_to_open
;
3054 current_target
.to_close
= debug_to_close
;
3055 current_target
.to_attach
= debug_to_attach
;
3056 current_target
.to_post_attach
= debug_to_post_attach
;
3057 current_target
.to_detach
= debug_to_detach
;
3058 current_target
.to_resume
= debug_to_resume
;
3059 current_target
.to_wait
= debug_to_wait
;
3060 current_target
.to_fetch_registers
= debug_to_fetch_registers
;
3061 current_target
.to_store_registers
= debug_to_store_registers
;
3062 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
3063 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
3064 current_target
.to_files_info
= debug_to_files_info
;
3065 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
3066 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
3067 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
3068 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
3069 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
3070 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
3071 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
3072 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
3073 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
3074 current_target
.to_watchpoint_addr_within_range
= debug_to_watchpoint_addr_within_range
;
3075 current_target
.to_region_ok_for_hw_watchpoint
= debug_to_region_ok_for_hw_watchpoint
;
3076 current_target
.to_terminal_init
= debug_to_terminal_init
;
3077 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
3078 current_target
.to_terminal_ours_for_output
= debug_to_terminal_ours_for_output
;
3079 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
3080 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
3081 current_target
.to_terminal_info
= debug_to_terminal_info
;
3082 current_target
.to_kill
= debug_to_kill
;
3083 current_target
.to_load
= debug_to_load
;
3084 current_target
.to_lookup_symbol
= debug_to_lookup_symbol
;
3085 current_target
.to_create_inferior
= debug_to_create_inferior
;
3086 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
3087 current_target
.to_acknowledge_created_inferior
= debug_to_acknowledge_created_inferior
;
3088 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
3089 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
3090 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
3091 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
3092 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
3093 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
3094 current_target
.to_has_exited
= debug_to_has_exited
;
3095 current_target
.to_mourn_inferior
= debug_to_mourn_inferior
;
3096 current_target
.to_can_run
= debug_to_can_run
;
3097 current_target
.to_notice_signals
= debug_to_notice_signals
;
3098 current_target
.to_thread_alive
= debug_to_thread_alive
;
3099 current_target
.to_find_new_threads
= debug_to_find_new_threads
;
3100 current_target
.to_stop
= debug_to_stop
;
3101 current_target
.to_rcmd
= debug_to_rcmd
;
3102 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
3106 static char targ_desc
[] =
3107 "Names of targets and files being debugged.\n\
3108 Shows the entire stack of targets currently in use (including the exec-file,\n\
3109 core-file, and process, if any), as well as the symbol file name.";
3112 do_monitor_command (char *cmd
,
3115 if ((current_target
.to_rcmd
3116 == (void (*) (char *, struct ui_file
*)) tcomplain
)
3117 || (current_target
.to_rcmd
== debug_to_rcmd
3118 && (debug_target
.to_rcmd
3119 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
3120 error (_("\"monitor\" command not supported by this target."));
3121 target_rcmd (cmd
, gdb_stdtarg
);
3124 /* Print the name of each layers of our target stack. */
3127 maintenance_print_target_stack (char *cmd
, int from_tty
)
3129 struct target_ops
*t
;
3131 printf_filtered (_("The current target stack is:\n"));
3133 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3135 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
3140 initialize_targets (void)
3142 init_dummy_target ();
3143 push_target (&dummy_target
);
3145 add_info ("target", target_info
, targ_desc
);
3146 add_info ("files", target_info
, targ_desc
);
3148 add_setshow_zinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
3149 Set target debugging."), _("\
3150 Show target debugging."), _("\
3151 When non-zero, target debugging is enabled. Higher numbers are more\n\
3152 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
3156 &setdebuglist
, &showdebuglist
);
3158 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
3159 &trust_readonly
, _("\
3160 Set mode for reading from readonly sections."), _("\
3161 Show mode for reading from readonly sections."), _("\
3162 When this mode is on, memory reads from readonly sections (such as .text)\n\
3163 will be read from the object file instead of from the target. This will\n\
3164 result in significant performance improvement for remote targets."),
3166 show_trust_readonly
,
3167 &setlist
, &showlist
);
3169 add_com ("monitor", class_obscure
, do_monitor_command
,
3170 _("Send a command to the remote monitor (remote targets only)."));
3172 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
3173 _("Print the name of each layer of the internal target stack."),
3174 &maintenanceprintlist
);
3176 target_dcache
= dcache_init ();