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"
49 static void target_info (char *, int);
51 static void default_terminal_info (struct target_ops
*, const 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 (struct target_ops
*,
59 static void default_rcmd (struct target_ops
*, char *, struct ui_file
*);
61 static ptid_t
default_get_ada_task_ptid (struct target_ops
*self
,
64 static int default_follow_fork (struct target_ops
*self
, int follow_child
,
67 static void default_mourn_inferior (struct target_ops
*self
);
69 static int default_search_memory (struct target_ops
*ops
,
71 ULONGEST search_space_len
,
72 const gdb_byte
*pattern
,
74 CORE_ADDR
*found_addrp
);
76 static void tcomplain (void) ATTRIBUTE_NORETURN
;
78 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
80 static int return_zero (struct target_ops
*);
82 static int return_zero_has_execution (struct target_ops
*, ptid_t
);
84 void target_ignore (void);
86 static void target_command (char *, int);
88 static struct target_ops
*find_default_run_target (char *);
90 static target_xfer_partial_ftype default_xfer_partial
;
92 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
95 static int dummy_find_memory_regions (struct target_ops
*self
,
96 find_memory_region_ftype ignore1
,
99 static char *dummy_make_corefile_notes (struct target_ops
*self
,
100 bfd
*ignore1
, int *ignore2
);
102 static char *default_pid_to_str (struct target_ops
*ops
, ptid_t ptid
);
104 static int find_default_can_async_p (struct target_ops
*ignore
);
106 static int find_default_is_async_p (struct target_ops
*ignore
);
108 static enum exec_direction_kind default_execution_direction
109 (struct target_ops
*self
);
111 #include "target-delegates.c"
113 static void init_dummy_target (void);
115 static struct target_ops debug_target
;
117 static void debug_to_open (char *, int);
119 static void debug_to_prepare_to_store (struct target_ops
*self
,
122 static void debug_to_files_info (struct target_ops
*);
124 static int debug_to_insert_breakpoint (struct target_ops
*, struct gdbarch
*,
125 struct bp_target_info
*);
127 static int debug_to_remove_breakpoint (struct target_ops
*, struct gdbarch
*,
128 struct bp_target_info
*);
130 static int debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
133 static int debug_to_insert_hw_breakpoint (struct target_ops
*self
,
135 struct bp_target_info
*);
137 static int debug_to_remove_hw_breakpoint (struct target_ops
*self
,
139 struct bp_target_info
*);
141 static int debug_to_insert_watchpoint (struct target_ops
*self
,
143 struct expression
*);
145 static int debug_to_remove_watchpoint (struct target_ops
*self
,
147 struct expression
*);
149 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
151 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
152 CORE_ADDR
, CORE_ADDR
, int);
154 static int debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
157 static int debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
159 struct expression
*);
161 static void debug_to_terminal_init (struct target_ops
*self
);
163 static void debug_to_terminal_inferior (struct target_ops
*self
);
165 static void debug_to_terminal_ours_for_output (struct target_ops
*self
);
167 static void debug_to_terminal_save_ours (struct target_ops
*self
);
169 static void debug_to_terminal_ours (struct target_ops
*self
);
171 static void debug_to_load (struct target_ops
*self
, char *, int);
173 static int debug_to_can_run (struct target_ops
*self
);
175 static void debug_to_stop (struct target_ops
*self
, ptid_t
);
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_allocsize
;
183 #define DEFAULT_ALLOCSIZE 10
185 /* The initial current target, so that there is always a semi-valid
188 static struct target_ops dummy_target
;
190 /* Top of target stack. */
192 static struct target_ops
*target_stack
;
194 /* The target structure we are currently using to talk to a process
195 or file or whatever "inferior" we have. */
197 struct target_ops current_target
;
199 /* Command list for target. */
201 static struct cmd_list_element
*targetlist
= NULL
;
203 /* Nonzero if we should trust readonly sections from the
204 executable when reading memory. */
206 static int trust_readonly
= 0;
208 /* Nonzero if we should show true memory content including
209 memory breakpoint inserted by gdb. */
211 static int show_memory_breakpoints
= 0;
213 /* These globals control whether GDB attempts to perform these
214 operations; they are useful for targets that need to prevent
215 inadvertant disruption, such as in non-stop mode. */
217 int may_write_registers
= 1;
219 int may_write_memory
= 1;
221 int may_insert_breakpoints
= 1;
223 int may_insert_tracepoints
= 1;
225 int may_insert_fast_tracepoints
= 1;
229 /* Non-zero if we want to see trace of target level stuff. */
231 static unsigned int targetdebug
= 0;
233 show_targetdebug (struct ui_file
*file
, int from_tty
,
234 struct cmd_list_element
*c
, const char *value
)
236 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
239 static void setup_target_debug (void);
241 /* The user just typed 'target' without the name of a target. */
244 target_command (char *arg
, int from_tty
)
246 fputs_filtered ("Argument required (target name). Try `help target'\n",
250 /* Default target_has_* methods for process_stratum targets. */
253 default_child_has_all_memory (struct target_ops
*ops
)
255 /* If no inferior selected, then we can't read memory here. */
256 if (ptid_equal (inferior_ptid
, null_ptid
))
263 default_child_has_memory (struct target_ops
*ops
)
265 /* If no inferior selected, then we can't read memory here. */
266 if (ptid_equal (inferior_ptid
, null_ptid
))
273 default_child_has_stack (struct target_ops
*ops
)
275 /* If no inferior selected, there's no stack. */
276 if (ptid_equal (inferior_ptid
, null_ptid
))
283 default_child_has_registers (struct target_ops
*ops
)
285 /* Can't read registers from no inferior. */
286 if (ptid_equal (inferior_ptid
, null_ptid
))
293 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
295 /* If there's no thread selected, then we can't make it run through
297 if (ptid_equal (the_ptid
, null_ptid
))
305 target_has_all_memory_1 (void)
307 struct target_ops
*t
;
309 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
310 if (t
->to_has_all_memory (t
))
317 target_has_memory_1 (void)
319 struct target_ops
*t
;
321 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
322 if (t
->to_has_memory (t
))
329 target_has_stack_1 (void)
331 struct target_ops
*t
;
333 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
334 if (t
->to_has_stack (t
))
341 target_has_registers_1 (void)
343 struct target_ops
*t
;
345 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
346 if (t
->to_has_registers (t
))
353 target_has_execution_1 (ptid_t the_ptid
)
355 struct target_ops
*t
;
357 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
358 if (t
->to_has_execution (t
, the_ptid
))
365 target_has_execution_current (void)
367 return target_has_execution_1 (inferior_ptid
);
370 /* Complete initialization of T. This ensures that various fields in
371 T are set, if needed by the target implementation. */
374 complete_target_initialization (struct target_ops
*t
)
376 /* Provide default values for all "must have" methods. */
377 if (t
->to_xfer_partial
== NULL
)
378 t
->to_xfer_partial
= default_xfer_partial
;
380 if (t
->to_has_all_memory
== NULL
)
381 t
->to_has_all_memory
= return_zero
;
383 if (t
->to_has_memory
== NULL
)
384 t
->to_has_memory
= return_zero
;
386 if (t
->to_has_stack
== NULL
)
387 t
->to_has_stack
= return_zero
;
389 if (t
->to_has_registers
== NULL
)
390 t
->to_has_registers
= return_zero
;
392 if (t
->to_has_execution
== NULL
)
393 t
->to_has_execution
= return_zero_has_execution
;
395 install_delegators (t
);
398 /* Add possible target architecture T to the list and add a new
399 command 'target T->to_shortname'. Set COMPLETER as the command's
400 completer if not NULL. */
403 add_target_with_completer (struct target_ops
*t
,
404 completer_ftype
*completer
)
406 struct cmd_list_element
*c
;
408 complete_target_initialization (t
);
412 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
413 target_structs
= (struct target_ops
**) xmalloc
414 (target_struct_allocsize
* sizeof (*target_structs
));
416 if (target_struct_size
>= target_struct_allocsize
)
418 target_struct_allocsize
*= 2;
419 target_structs
= (struct target_ops
**)
420 xrealloc ((char *) target_structs
,
421 target_struct_allocsize
* sizeof (*target_structs
));
423 target_structs
[target_struct_size
++] = t
;
425 if (targetlist
== NULL
)
426 add_prefix_cmd ("target", class_run
, target_command
, _("\
427 Connect to a target machine or process.\n\
428 The first argument is the type or protocol of the target machine.\n\
429 Remaining arguments are interpreted by the target protocol. For more\n\
430 information on the arguments for a particular protocol, type\n\
431 `help target ' followed by the protocol name."),
432 &targetlist
, "target ", 0, &cmdlist
);
433 c
= add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
,
435 if (completer
!= NULL
)
436 set_cmd_completer (c
, completer
);
439 /* Add a possible target architecture to the list. */
442 add_target (struct target_ops
*t
)
444 add_target_with_completer (t
, NULL
);
450 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
452 struct cmd_list_element
*c
;
455 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
457 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
458 alt
= xstrprintf ("target %s", t
->to_shortname
);
459 deprecate_cmd (c
, alt
);
473 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
475 current_target
.to_kill (¤t_target
);
479 target_load (char *arg
, int from_tty
)
481 target_dcache_invalidate ();
482 (*current_target
.to_load
) (¤t_target
, arg
, from_tty
);
486 target_create_inferior (char *exec_file
, char *args
,
487 char **env
, int from_tty
)
489 struct target_ops
*t
;
491 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
493 if (t
->to_create_inferior
!= NULL
)
495 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
497 fprintf_unfiltered (gdb_stdlog
,
498 "target_create_inferior (%s, %s, xxx, %d)\n",
499 exec_file
, args
, from_tty
);
504 internal_error (__FILE__
, __LINE__
,
505 _("could not find a target to create inferior"));
509 target_terminal_inferior (void)
511 /* A background resume (``run&'') should leave GDB in control of the
512 terminal. Use target_can_async_p, not target_is_async_p, since at
513 this point the target is not async yet. However, if sync_execution
514 is not set, we know it will become async prior to resume. */
515 if (target_can_async_p () && !sync_execution
)
518 /* If GDB is resuming the inferior in the foreground, install
519 inferior's terminal modes. */
520 (*current_target
.to_terminal_inferior
) (¤t_target
);
524 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
525 struct target_ops
*t
)
527 errno
= EIO
; /* Can't read/write this location. */
528 return 0; /* No bytes handled. */
534 error (_("You can't do that when your target is `%s'"),
535 current_target
.to_shortname
);
541 error (_("You can't do that without a process to debug."));
545 default_terminal_info (struct target_ops
*self
, const char *args
, int from_tty
)
547 printf_unfiltered (_("No saved terminal information.\n"));
550 /* A default implementation for the to_get_ada_task_ptid target method.
552 This function builds the PTID by using both LWP and TID as part of
553 the PTID lwp and tid elements. The pid used is the pid of the
557 default_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long tid
)
559 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
562 static enum exec_direction_kind
563 default_execution_direction (struct target_ops
*self
)
565 if (!target_can_execute_reverse
)
567 else if (!target_can_async_p ())
570 gdb_assert_not_reached ("\
571 to_execution_direction must be implemented for reverse async");
574 /* Go through the target stack from top to bottom, copying over zero
575 entries in current_target, then filling in still empty entries. In
576 effect, we are doing class inheritance through the pushed target
579 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
580 is currently implemented, is that it discards any knowledge of
581 which target an inherited method originally belonged to.
582 Consequently, new new target methods should instead explicitly and
583 locally search the target stack for the target that can handle the
587 update_current_target (void)
589 struct target_ops
*t
;
591 /* First, reset current's contents. */
592 memset (¤t_target
, 0, sizeof (current_target
));
594 /* Install the delegators. */
595 install_delegators (¤t_target
);
597 current_target
.to_stratum
= target_stack
->to_stratum
;
599 #define INHERIT(FIELD, TARGET) \
600 if (!current_target.FIELD) \
601 current_target.FIELD = (TARGET)->FIELD
603 /* Do not add any new INHERITs here. Instead, use the delegation
604 mechanism provided by make-target-delegates. */
605 for (t
= target_stack
; t
; t
= t
->beneath
)
607 INHERIT (to_shortname
, t
);
608 INHERIT (to_longname
, t
);
610 INHERIT (to_attach_no_wait
, t
);
611 INHERIT (deprecated_xfer_memory
, t
);
612 INHERIT (to_have_steppable_watchpoint
, t
);
613 INHERIT (to_have_continuable_watchpoint
, t
);
614 INHERIT (to_has_thread_control
, t
);
615 INHERIT (to_magic
, t
);
619 /* Clean up a target struct so it no longer has any zero pointers in
620 it. Do not add any new de_faults here. Instead, use the
621 delegation mechanism provided by make-target-delegates. */
623 #define de_fault(field, value) \
624 if (!current_target.field) \
625 current_target.field = value
628 (void (*) (char *, int))
631 (void (*) (struct target_ops
*))
633 de_fault (deprecated_xfer_memory
,
634 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
635 struct mem_attrib
*, struct target_ops
*))
640 /* Finally, position the target-stack beneath the squashed
641 "current_target". That way code looking for a non-inherited
642 target method can quickly and simply find it. */
643 current_target
.beneath
= target_stack
;
646 setup_target_debug ();
649 /* Push a new target type into the stack of the existing target accessors,
650 possibly superseding some of the existing accessors.
652 Rather than allow an empty stack, we always have the dummy target at
653 the bottom stratum, so we can call the function vectors without
657 push_target (struct target_ops
*t
)
659 struct target_ops
**cur
;
661 /* Check magic number. If wrong, it probably means someone changed
662 the struct definition, but not all the places that initialize one. */
663 if (t
->to_magic
!= OPS_MAGIC
)
665 fprintf_unfiltered (gdb_stderr
,
666 "Magic number of %s target struct wrong\n",
668 internal_error (__FILE__
, __LINE__
,
669 _("failed internal consistency check"));
672 /* Find the proper stratum to install this target in. */
673 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
675 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
679 /* If there's already targets at this stratum, remove them. */
680 /* FIXME: cagney/2003-10-15: I think this should be popping all
681 targets to CUR, and not just those at this stratum level. */
682 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
684 /* There's already something at this stratum level. Close it,
685 and un-hook it from the stack. */
686 struct target_ops
*tmp
= (*cur
);
688 (*cur
) = (*cur
)->beneath
;
693 /* We have removed all targets in our stratum, now add the new one. */
697 update_current_target ();
700 /* Remove a target_ops vector from the stack, wherever it may be.
701 Return how many times it was removed (0 or 1). */
704 unpush_target (struct target_ops
*t
)
706 struct target_ops
**cur
;
707 struct target_ops
*tmp
;
709 if (t
->to_stratum
== dummy_stratum
)
710 internal_error (__FILE__
, __LINE__
,
711 _("Attempt to unpush the dummy target"));
713 /* Look for the specified target. Note that we assume that a target
714 can only occur once in the target stack. */
716 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
722 /* If we don't find target_ops, quit. Only open targets should be
727 /* Unchain the target. */
729 (*cur
) = (*cur
)->beneath
;
732 update_current_target ();
734 /* Finally close the target. Note we do this after unchaining, so
735 any target method calls from within the target_close
736 implementation don't end up in T anymore. */
743 pop_all_targets_above (enum strata above_stratum
)
745 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
747 if (!unpush_target (target_stack
))
749 fprintf_unfiltered (gdb_stderr
,
750 "pop_all_targets couldn't find target %s\n",
751 target_stack
->to_shortname
);
752 internal_error (__FILE__
, __LINE__
,
753 _("failed internal consistency check"));
760 pop_all_targets (void)
762 pop_all_targets_above (dummy_stratum
);
765 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
768 target_is_pushed (struct target_ops
*t
)
770 struct target_ops
**cur
;
772 /* Check magic number. If wrong, it probably means someone changed
773 the struct definition, but not all the places that initialize one. */
774 if (t
->to_magic
!= OPS_MAGIC
)
776 fprintf_unfiltered (gdb_stderr
,
777 "Magic number of %s target struct wrong\n",
779 internal_error (__FILE__
, __LINE__
,
780 _("failed internal consistency check"));
783 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
790 /* Using the objfile specified in OBJFILE, find the address for the
791 current thread's thread-local storage with offset OFFSET. */
793 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
795 volatile CORE_ADDR addr
= 0;
796 struct target_ops
*target
;
798 for (target
= current_target
.beneath
;
800 target
= target
->beneath
)
802 if (target
->to_get_thread_local_address
!= NULL
)
807 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
809 ptid_t ptid
= inferior_ptid
;
810 volatile struct gdb_exception ex
;
812 TRY_CATCH (ex
, RETURN_MASK_ALL
)
816 /* Fetch the load module address for this objfile. */
817 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
819 /* If it's 0, throw the appropriate exception. */
821 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
822 _("TLS load module not found"));
824 addr
= target
->to_get_thread_local_address (target
, ptid
,
827 /* If an error occurred, print TLS related messages here. Otherwise,
828 throw the error to some higher catcher. */
831 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
835 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
836 error (_("Cannot find thread-local variables "
837 "in this thread library."));
839 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
840 if (objfile_is_library
)
841 error (_("Cannot find shared library `%s' in dynamic"
842 " linker's load module list"), objfile_name (objfile
));
844 error (_("Cannot find executable file `%s' in dynamic"
845 " linker's load module list"), objfile_name (objfile
));
847 case TLS_NOT_ALLOCATED_YET_ERROR
:
848 if (objfile_is_library
)
849 error (_("The inferior has not yet allocated storage for"
850 " thread-local variables in\n"
851 "the shared library `%s'\n"
853 objfile_name (objfile
), target_pid_to_str (ptid
));
855 error (_("The inferior has not yet allocated storage for"
856 " thread-local variables in\n"
857 "the executable `%s'\n"
859 objfile_name (objfile
), target_pid_to_str (ptid
));
861 case TLS_GENERIC_ERROR
:
862 if (objfile_is_library
)
863 error (_("Cannot find thread-local storage for %s, "
864 "shared library %s:\n%s"),
865 target_pid_to_str (ptid
),
866 objfile_name (objfile
), ex
.message
);
868 error (_("Cannot find thread-local storage for %s, "
869 "executable file %s:\n%s"),
870 target_pid_to_str (ptid
),
871 objfile_name (objfile
), ex
.message
);
874 throw_exception (ex
);
879 /* It wouldn't be wrong here to try a gdbarch method, too; finding
880 TLS is an ABI-specific thing. But we don't do that yet. */
882 error (_("Cannot find thread-local variables on this target"));
888 target_xfer_status_to_string (enum target_xfer_status err
)
890 #define CASE(X) case X: return #X
893 CASE(TARGET_XFER_E_IO
);
894 CASE(TARGET_XFER_E_UNAVAILABLE
);
903 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
905 /* target_read_string -- read a null terminated string, up to LEN bytes,
906 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
907 Set *STRING to a pointer to malloc'd memory containing the data; the caller
908 is responsible for freeing it. Return the number of bytes successfully
912 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
918 int buffer_allocated
;
920 unsigned int nbytes_read
= 0;
924 /* Small for testing. */
925 buffer_allocated
= 4;
926 buffer
= xmalloc (buffer_allocated
);
931 tlen
= MIN (len
, 4 - (memaddr
& 3));
932 offset
= memaddr
& 3;
934 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
937 /* The transfer request might have crossed the boundary to an
938 unallocated region of memory. Retry the transfer, requesting
942 errcode
= target_read_memory (memaddr
, buf
, 1);
947 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
951 bytes
= bufptr
- buffer
;
952 buffer_allocated
*= 2;
953 buffer
= xrealloc (buffer
, buffer_allocated
);
954 bufptr
= buffer
+ bytes
;
957 for (i
= 0; i
< tlen
; i
++)
959 *bufptr
++ = buf
[i
+ offset
];
960 if (buf
[i
+ offset
] == '\000')
962 nbytes_read
+= i
+ 1;
978 struct target_section_table
*
979 target_get_section_table (struct target_ops
*target
)
982 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
984 return (*target
->to_get_section_table
) (target
);
987 /* Find a section containing ADDR. */
989 struct target_section
*
990 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
992 struct target_section_table
*table
= target_get_section_table (target
);
993 struct target_section
*secp
;
998 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1000 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1006 /* Read memory from the live target, even if currently inspecting a
1007 traceframe. The return is the same as that of target_read. */
1009 static enum target_xfer_status
1010 target_read_live_memory (enum target_object object
,
1011 ULONGEST memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
1012 ULONGEST
*xfered_len
)
1014 enum target_xfer_status ret
;
1015 struct cleanup
*cleanup
;
1017 /* Switch momentarily out of tfind mode so to access live memory.
1018 Note that this must not clear global state, such as the frame
1019 cache, which must still remain valid for the previous traceframe.
1020 We may be _building_ the frame cache at this point. */
1021 cleanup
= make_cleanup_restore_traceframe_number ();
1022 set_traceframe_number (-1);
1024 ret
= target_xfer_partial (current_target
.beneath
, object
, NULL
,
1025 myaddr
, NULL
, memaddr
, len
, xfered_len
);
1027 do_cleanups (cleanup
);
1031 /* Using the set of read-only target sections of OPS, read live
1032 read-only memory. Note that the actual reads start from the
1033 top-most target again.
1035 For interface/parameters/return description see target.h,
1038 static enum target_xfer_status
1039 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1040 enum target_object object
,
1041 gdb_byte
*readbuf
, ULONGEST memaddr
,
1042 ULONGEST len
, ULONGEST
*xfered_len
)
1044 struct target_section
*secp
;
1045 struct target_section_table
*table
;
1047 secp
= target_section_by_addr (ops
, memaddr
);
1049 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1050 secp
->the_bfd_section
)
1053 struct target_section
*p
;
1054 ULONGEST memend
= memaddr
+ len
;
1056 table
= target_get_section_table (ops
);
1058 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1060 if (memaddr
>= p
->addr
)
1062 if (memend
<= p
->endaddr
)
1064 /* Entire transfer is within this section. */
1065 return target_read_live_memory (object
, memaddr
,
1066 readbuf
, len
, xfered_len
);
1068 else if (memaddr
>= p
->endaddr
)
1070 /* This section ends before the transfer starts. */
1075 /* This section overlaps the transfer. Just do half. */
1076 len
= p
->endaddr
- memaddr
;
1077 return target_read_live_memory (object
, memaddr
,
1078 readbuf
, len
, xfered_len
);
1084 return TARGET_XFER_EOF
;
1087 /* Read memory from more than one valid target. A core file, for
1088 instance, could have some of memory but delegate other bits to
1089 the target below it. So, we must manually try all targets. */
1091 static enum target_xfer_status
1092 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
1093 const gdb_byte
*writebuf
, ULONGEST memaddr
, LONGEST len
,
1094 ULONGEST
*xfered_len
)
1096 enum target_xfer_status res
;
1100 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1101 readbuf
, writebuf
, memaddr
, len
,
1103 if (res
== TARGET_XFER_OK
)
1106 /* Stop if the target reports that the memory is not available. */
1107 if (res
== TARGET_XFER_E_UNAVAILABLE
)
1110 /* We want to continue past core files to executables, but not
1111 past a running target's memory. */
1112 if (ops
->to_has_all_memory (ops
))
1117 while (ops
!= NULL
);
1122 /* Perform a partial memory transfer.
1123 For docs see target.h, to_xfer_partial. */
1125 static enum target_xfer_status
1126 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1127 gdb_byte
*readbuf
, const gdb_byte
*writebuf
, ULONGEST memaddr
,
1128 ULONGEST len
, ULONGEST
*xfered_len
)
1130 enum target_xfer_status res
;
1132 struct mem_region
*region
;
1133 struct inferior
*inf
;
1135 /* For accesses to unmapped overlay sections, read directly from
1136 files. Must do this first, as MEMADDR may need adjustment. */
1137 if (readbuf
!= NULL
&& overlay_debugging
)
1139 struct obj_section
*section
= find_pc_overlay (memaddr
);
1141 if (pc_in_unmapped_range (memaddr
, section
))
1143 struct target_section_table
*table
1144 = target_get_section_table (ops
);
1145 const char *section_name
= section
->the_bfd_section
->name
;
1147 memaddr
= overlay_mapped_address (memaddr
, section
);
1148 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1149 memaddr
, len
, xfered_len
,
1151 table
->sections_end
,
1156 /* Try the executable files, if "trust-readonly-sections" is set. */
1157 if (readbuf
!= NULL
&& trust_readonly
)
1159 struct target_section
*secp
;
1160 struct target_section_table
*table
;
1162 secp
= target_section_by_addr (ops
, memaddr
);
1164 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
1165 secp
->the_bfd_section
)
1168 table
= target_get_section_table (ops
);
1169 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1170 memaddr
, len
, xfered_len
,
1172 table
->sections_end
,
1177 /* If reading unavailable memory in the context of traceframes, and
1178 this address falls within a read-only section, fallback to
1179 reading from live memory. */
1180 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1182 VEC(mem_range_s
) *available
;
1184 /* If we fail to get the set of available memory, then the
1185 target does not support querying traceframe info, and so we
1186 attempt reading from the traceframe anyway (assuming the
1187 target implements the old QTro packet then). */
1188 if (traceframe_available_memory (&available
, memaddr
, len
))
1190 struct cleanup
*old_chain
;
1192 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1194 if (VEC_empty (mem_range_s
, available
)
1195 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1197 /* Don't read into the traceframe's available
1199 if (!VEC_empty (mem_range_s
, available
))
1201 LONGEST oldlen
= len
;
1203 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1204 gdb_assert (len
<= oldlen
);
1207 do_cleanups (old_chain
);
1209 /* This goes through the topmost target again. */
1210 res
= memory_xfer_live_readonly_partial (ops
, object
,
1213 if (res
== TARGET_XFER_OK
)
1214 return TARGET_XFER_OK
;
1217 /* No use trying further, we know some memory starting
1218 at MEMADDR isn't available. */
1220 return TARGET_XFER_E_UNAVAILABLE
;
1224 /* Don't try to read more than how much is available, in
1225 case the target implements the deprecated QTro packet to
1226 cater for older GDBs (the target's knowledge of read-only
1227 sections may be outdated by now). */
1228 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1230 do_cleanups (old_chain
);
1234 /* Try GDB's internal data cache. */
1235 region
= lookup_mem_region (memaddr
);
1236 /* region->hi == 0 means there's no upper bound. */
1237 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1240 reg_len
= region
->hi
- memaddr
;
1242 switch (region
->attrib
.mode
)
1245 if (writebuf
!= NULL
)
1246 return TARGET_XFER_E_IO
;
1250 if (readbuf
!= NULL
)
1251 return TARGET_XFER_E_IO
;
1255 /* We only support writing to flash during "load" for now. */
1256 if (writebuf
!= NULL
)
1257 error (_("Writing to flash memory forbidden in this context"));
1261 return TARGET_XFER_E_IO
;
1264 if (!ptid_equal (inferior_ptid
, null_ptid
))
1265 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1270 /* The dcache reads whole cache lines; that doesn't play well
1271 with reading from a trace buffer, because reading outside of
1272 the collected memory range fails. */
1273 && get_traceframe_number () == -1
1274 && (region
->attrib
.cache
1275 || (stack_cache_enabled_p () && object
== TARGET_OBJECT_STACK_MEMORY
)
1276 || (code_cache_enabled_p () && object
== TARGET_OBJECT_CODE_MEMORY
)))
1278 DCACHE
*dcache
= target_dcache_get_or_init ();
1281 if (readbuf
!= NULL
)
1282 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, readbuf
, reg_len
, 0);
1284 /* FIXME drow/2006-08-09: If we're going to preserve const
1285 correctness dcache_xfer_memory should take readbuf and
1287 l
= dcache_xfer_memory (ops
, dcache
, memaddr
, (void *) writebuf
,
1290 return TARGET_XFER_E_IO
;
1293 *xfered_len
= (ULONGEST
) l
;
1294 return TARGET_XFER_OK
;
1298 /* If none of those methods found the memory we wanted, fall back
1299 to a target partial transfer. Normally a single call to
1300 to_xfer_partial is enough; if it doesn't recognize an object
1301 it will call the to_xfer_partial of the next target down.
1302 But for memory this won't do. Memory is the only target
1303 object which can be read from more than one valid target.
1304 A core file, for instance, could have some of memory but
1305 delegate other bits to the target below it. So, we must
1306 manually try all targets. */
1308 res
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, memaddr
, reg_len
,
1311 /* Make sure the cache gets updated no matter what - if we are writing
1312 to the stack. Even if this write is not tagged as such, we still need
1313 to update the cache. */
1315 if (res
== TARGET_XFER_OK
1318 && target_dcache_init_p ()
1319 && !region
->attrib
.cache
1320 && ((stack_cache_enabled_p () && object
!= TARGET_OBJECT_STACK_MEMORY
)
1321 || (code_cache_enabled_p () && object
!= TARGET_OBJECT_CODE_MEMORY
)))
1323 DCACHE
*dcache
= target_dcache_get ();
1325 dcache_update (dcache
, memaddr
, (void *) writebuf
, reg_len
);
1328 /* If we still haven't got anything, return the last error. We
1333 /* Perform a partial memory transfer. For docs see target.h,
1336 static enum target_xfer_status
1337 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1338 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1339 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
1341 enum target_xfer_status res
;
1343 /* Zero length requests are ok and require no work. */
1345 return TARGET_XFER_EOF
;
1347 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1348 breakpoint insns, thus hiding out from higher layers whether
1349 there are software breakpoints inserted in the code stream. */
1350 if (readbuf
!= NULL
)
1352 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
,
1355 if (res
== TARGET_XFER_OK
&& !show_memory_breakpoints
)
1356 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1361 struct cleanup
*old_chain
;
1363 /* A large write request is likely to be partially satisfied
1364 by memory_xfer_partial_1. We will continually malloc
1365 and free a copy of the entire write request for breakpoint
1366 shadow handling even though we only end up writing a small
1367 subset of it. Cap writes to 4KB to mitigate this. */
1368 len
= min (4096, len
);
1370 buf
= xmalloc (len
);
1371 old_chain
= make_cleanup (xfree
, buf
);
1372 memcpy (buf
, writebuf
, len
);
1374 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1375 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
,
1378 do_cleanups (old_chain
);
1385 restore_show_memory_breakpoints (void *arg
)
1387 show_memory_breakpoints
= (uintptr_t) arg
;
1391 make_show_memory_breakpoints_cleanup (int show
)
1393 int current
= show_memory_breakpoints
;
1395 show_memory_breakpoints
= show
;
1396 return make_cleanup (restore_show_memory_breakpoints
,
1397 (void *) (uintptr_t) current
);
1400 /* For docs see target.h, to_xfer_partial. */
1402 enum target_xfer_status
1403 target_xfer_partial (struct target_ops
*ops
,
1404 enum target_object object
, const char *annex
,
1405 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
1406 ULONGEST offset
, ULONGEST len
,
1407 ULONGEST
*xfered_len
)
1409 enum target_xfer_status retval
;
1411 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1413 /* Transfer is done when LEN is zero. */
1415 return TARGET_XFER_EOF
;
1417 if (writebuf
&& !may_write_memory
)
1418 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1419 core_addr_to_string_nz (offset
), plongest (len
));
1423 /* If this is a memory transfer, let the memory-specific code
1424 have a look at it instead. Memory transfers are more
1426 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
1427 || object
== TARGET_OBJECT_CODE_MEMORY
)
1428 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1429 writebuf
, offset
, len
, xfered_len
);
1430 else if (object
== TARGET_OBJECT_RAW_MEMORY
)
1432 /* Request the normal memory object from other layers. */
1433 retval
= raw_memory_xfer_partial (ops
, readbuf
, writebuf
, offset
, len
,
1437 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
,
1438 writebuf
, offset
, len
, xfered_len
);
1442 const unsigned char *myaddr
= NULL
;
1444 fprintf_unfiltered (gdb_stdlog
,
1445 "%s:target_xfer_partial "
1446 "(%d, %s, %s, %s, %s, %s) = %d, %s",
1449 (annex
? annex
: "(null)"),
1450 host_address_to_string (readbuf
),
1451 host_address_to_string (writebuf
),
1452 core_addr_to_string_nz (offset
),
1453 pulongest (len
), retval
,
1454 pulongest (*xfered_len
));
1460 if (retval
== TARGET_XFER_OK
&& myaddr
!= NULL
)
1464 fputs_unfiltered (", bytes =", gdb_stdlog
);
1465 for (i
= 0; i
< *xfered_len
; i
++)
1467 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1469 if (targetdebug
< 2 && i
> 0)
1471 fprintf_unfiltered (gdb_stdlog
, " ...");
1474 fprintf_unfiltered (gdb_stdlog
, "\n");
1477 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1481 fputc_unfiltered ('\n', gdb_stdlog
);
1484 /* Check implementations of to_xfer_partial update *XFERED_LEN
1485 properly. Do assertion after printing debug messages, so that we
1486 can find more clues on assertion failure from debugging messages. */
1487 if (retval
== TARGET_XFER_OK
|| retval
== TARGET_XFER_E_UNAVAILABLE
)
1488 gdb_assert (*xfered_len
> 0);
1493 /* Read LEN bytes of target memory at address MEMADDR, placing the
1494 results in GDB's memory at MYADDR. Returns either 0 for success or
1495 TARGET_XFER_E_IO if any error occurs.
1497 If an error occurs, no guarantee is made about the contents of the data at
1498 MYADDR. In particular, the caller should not depend upon partial reads
1499 filling the buffer with good data. There is no way for the caller to know
1500 how much good data might have been transfered anyway. Callers that can
1501 deal with partial reads should call target_read (which will retry until
1502 it makes no progress, and then return how much was transferred). */
1505 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1507 /* Dispatch to the topmost target, not the flattened current_target.
1508 Memory accesses check target->to_has_(all_)memory, and the
1509 flattened target doesn't inherit those. */
1510 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1511 myaddr
, memaddr
, len
) == len
)
1514 return TARGET_XFER_E_IO
;
1517 /* Like target_read_memory, but specify explicitly that this is a read
1518 from the target's raw memory. That is, this read bypasses the
1519 dcache, breakpoint shadowing, etc. */
1522 target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1524 /* See comment in target_read_memory about why the request starts at
1525 current_target.beneath. */
1526 if (target_read (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1527 myaddr
, memaddr
, len
) == len
)
1530 return TARGET_XFER_E_IO
;
1533 /* Like target_read_memory, but specify explicitly that this is a read from
1534 the target's stack. This may trigger different cache behavior. */
1537 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1539 /* See comment in target_read_memory about why the request starts at
1540 current_target.beneath. */
1541 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1542 myaddr
, memaddr
, len
) == len
)
1545 return TARGET_XFER_E_IO
;
1548 /* Like target_read_memory, but specify explicitly that this is a read from
1549 the target's code. This may trigger different cache behavior. */
1552 target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1554 /* See comment in target_read_memory about why the request starts at
1555 current_target.beneath. */
1556 if (target_read (current_target
.beneath
, TARGET_OBJECT_CODE_MEMORY
, NULL
,
1557 myaddr
, memaddr
, len
) == len
)
1560 return TARGET_XFER_E_IO
;
1563 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1564 Returns either 0 for success or TARGET_XFER_E_IO if any
1565 error occurs. If an error occurs, no guarantee is made about how
1566 much data got written. Callers that can deal with partial writes
1567 should call target_write. */
1570 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1572 /* See comment in target_read_memory about why the request starts at
1573 current_target.beneath. */
1574 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1575 myaddr
, memaddr
, len
) == len
)
1578 return TARGET_XFER_E_IO
;
1581 /* Write LEN bytes from MYADDR to target raw memory at address
1582 MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO
1583 if any error occurs. If an error occurs, no guarantee is made
1584 about how much data got written. Callers that can deal with
1585 partial writes should call target_write. */
1588 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1590 /* See comment in target_read_memory about why the request starts at
1591 current_target.beneath. */
1592 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1593 myaddr
, memaddr
, len
) == len
)
1596 return TARGET_XFER_E_IO
;
1599 /* Fetch the target's memory map. */
1602 target_memory_map (void)
1604 VEC(mem_region_s
) *result
;
1605 struct mem_region
*last_one
, *this_one
;
1607 struct target_ops
*t
;
1610 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1612 result
= current_target
.to_memory_map (¤t_target
);
1616 qsort (VEC_address (mem_region_s
, result
),
1617 VEC_length (mem_region_s
, result
),
1618 sizeof (struct mem_region
), mem_region_cmp
);
1620 /* Check that regions do not overlap. Simultaneously assign
1621 a numbering for the "mem" commands to use to refer to
1624 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1626 this_one
->number
= ix
;
1628 if (last_one
&& last_one
->hi
> this_one
->lo
)
1630 warning (_("Overlapping regions in memory map: ignoring"));
1631 VEC_free (mem_region_s
, result
);
1634 last_one
= this_one
;
1641 target_flash_erase (ULONGEST address
, LONGEST length
)
1644 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1645 hex_string (address
), phex (length
, 0));
1646 current_target
.to_flash_erase (¤t_target
, address
, length
);
1650 target_flash_done (void)
1653 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1654 current_target
.to_flash_done (¤t_target
);
1658 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1659 struct cmd_list_element
*c
, const char *value
)
1661 fprintf_filtered (file
,
1662 _("Mode for reading from readonly sections is %s.\n"),
1666 /* More generic transfers. */
1668 static enum target_xfer_status
1669 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1670 const char *annex
, gdb_byte
*readbuf
,
1671 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
1672 ULONGEST
*xfered_len
)
1674 if (object
== TARGET_OBJECT_MEMORY
1675 && ops
->deprecated_xfer_memory
!= NULL
)
1676 /* If available, fall back to the target's
1677 "deprecated_xfer_memory" method. */
1682 if (writebuf
!= NULL
)
1684 void *buffer
= xmalloc (len
);
1685 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1687 memcpy (buffer
, writebuf
, len
);
1688 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1689 1/*write*/, NULL
, ops
);
1690 do_cleanups (cleanup
);
1692 if (readbuf
!= NULL
)
1693 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1694 0/*read*/, NULL
, ops
);
1697 *xfered_len
= (ULONGEST
) xfered
;
1698 return TARGET_XFER_E_IO
;
1700 else if (xfered
== 0 && errno
== 0)
1701 /* "deprecated_xfer_memory" uses 0, cross checked against
1702 ERRNO as one indication of an error. */
1703 return TARGET_XFER_EOF
;
1705 return TARGET_XFER_E_IO
;
1709 gdb_assert (ops
->beneath
!= NULL
);
1710 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1711 readbuf
, writebuf
, offset
, len
,
1716 /* Target vector read/write partial wrapper functions. */
1718 static enum target_xfer_status
1719 target_read_partial (struct target_ops
*ops
,
1720 enum target_object object
,
1721 const char *annex
, gdb_byte
*buf
,
1722 ULONGEST offset
, ULONGEST len
,
1723 ULONGEST
*xfered_len
)
1725 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
,
1729 static enum target_xfer_status
1730 target_write_partial (struct target_ops
*ops
,
1731 enum target_object object
,
1732 const char *annex
, const gdb_byte
*buf
,
1733 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
)
1735 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
,
1739 /* Wrappers to perform the full transfer. */
1741 /* For docs on target_read see target.h. */
1744 target_read (struct target_ops
*ops
,
1745 enum target_object object
,
1746 const char *annex
, gdb_byte
*buf
,
1747 ULONGEST offset
, LONGEST len
)
1751 while (xfered
< len
)
1753 ULONGEST xfered_len
;
1754 enum target_xfer_status status
;
1756 status
= target_read_partial (ops
, object
, annex
,
1757 (gdb_byte
*) buf
+ xfered
,
1758 offset
+ xfered
, len
- xfered
,
1761 /* Call an observer, notifying them of the xfer progress? */
1762 if (status
== TARGET_XFER_EOF
)
1764 else if (status
== TARGET_XFER_OK
)
1766 xfered
+= xfered_len
;
1776 /* Assuming that the entire [begin, end) range of memory cannot be
1777 read, try to read whatever subrange is possible to read.
1779 The function returns, in RESULT, either zero or one memory block.
1780 If there's a readable subrange at the beginning, it is completely
1781 read and returned. Any further readable subrange will not be read.
1782 Otherwise, if there's a readable subrange at the end, it will be
1783 completely read and returned. Any readable subranges before it
1784 (obviously, not starting at the beginning), will be ignored. In
1785 other cases -- either no readable subrange, or readable subrange(s)
1786 that is neither at the beginning, or end, nothing is returned.
1788 The purpose of this function is to handle a read across a boundary
1789 of accessible memory in a case when memory map is not available.
1790 The above restrictions are fine for this case, but will give
1791 incorrect results if the memory is 'patchy'. However, supporting
1792 'patchy' memory would require trying to read every single byte,
1793 and it seems unacceptable solution. Explicit memory map is
1794 recommended for this case -- and target_read_memory_robust will
1795 take care of reading multiple ranges then. */
1798 read_whatever_is_readable (struct target_ops
*ops
,
1799 ULONGEST begin
, ULONGEST end
,
1800 VEC(memory_read_result_s
) **result
)
1802 gdb_byte
*buf
= xmalloc (end
- begin
);
1803 ULONGEST current_begin
= begin
;
1804 ULONGEST current_end
= end
;
1806 memory_read_result_s r
;
1807 ULONGEST xfered_len
;
1809 /* If we previously failed to read 1 byte, nothing can be done here. */
1810 if (end
- begin
<= 1)
1816 /* Check that either first or the last byte is readable, and give up
1817 if not. This heuristic is meant to permit reading accessible memory
1818 at the boundary of accessible region. */
1819 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1820 buf
, begin
, 1, &xfered_len
) == TARGET_XFER_OK
)
1825 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1826 buf
+ (end
-begin
) - 1, end
- 1, 1,
1827 &xfered_len
) == TARGET_XFER_OK
)
1838 /* Loop invariant is that the [current_begin, current_end) was previously
1839 found to be not readable as a whole.
1841 Note loop condition -- if the range has 1 byte, we can't divide the range
1842 so there's no point trying further. */
1843 while (current_end
- current_begin
> 1)
1845 ULONGEST first_half_begin
, first_half_end
;
1846 ULONGEST second_half_begin
, second_half_end
;
1848 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
1852 first_half_begin
= current_begin
;
1853 first_half_end
= middle
;
1854 second_half_begin
= middle
;
1855 second_half_end
= current_end
;
1859 first_half_begin
= middle
;
1860 first_half_end
= current_end
;
1861 second_half_begin
= current_begin
;
1862 second_half_end
= middle
;
1865 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1866 buf
+ (first_half_begin
- begin
),
1868 first_half_end
- first_half_begin
);
1870 if (xfer
== first_half_end
- first_half_begin
)
1872 /* This half reads up fine. So, the error must be in the
1874 current_begin
= second_half_begin
;
1875 current_end
= second_half_end
;
1879 /* This half is not readable. Because we've tried one byte, we
1880 know some part of this half if actually redable. Go to the next
1881 iteration to divide again and try to read.
1883 We don't handle the other half, because this function only tries
1884 to read a single readable subrange. */
1885 current_begin
= first_half_begin
;
1886 current_end
= first_half_end
;
1892 /* The [begin, current_begin) range has been read. */
1894 r
.end
= current_begin
;
1899 /* The [current_end, end) range has been read. */
1900 LONGEST rlen
= end
- current_end
;
1902 r
.data
= xmalloc (rlen
);
1903 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
1904 r
.begin
= current_end
;
1908 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
1912 free_memory_read_result_vector (void *x
)
1914 VEC(memory_read_result_s
) *v
= x
;
1915 memory_read_result_s
*current
;
1918 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
1920 xfree (current
->data
);
1922 VEC_free (memory_read_result_s
, v
);
1925 VEC(memory_read_result_s
) *
1926 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
1928 VEC(memory_read_result_s
) *result
= 0;
1931 while (xfered
< len
)
1933 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
1936 /* If there is no explicit region, a fake one should be created. */
1937 gdb_assert (region
);
1939 if (region
->hi
== 0)
1940 rlen
= len
- xfered
;
1942 rlen
= region
->hi
- offset
;
1944 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
1946 /* Cannot read this region. Note that we can end up here only
1947 if the region is explicitly marked inaccessible, or
1948 'inaccessible-by-default' is in effect. */
1953 LONGEST to_read
= min (len
- xfered
, rlen
);
1954 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
1956 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1957 (gdb_byte
*) buffer
,
1958 offset
+ xfered
, to_read
);
1959 /* Call an observer, notifying them of the xfer progress? */
1962 /* Got an error reading full chunk. See if maybe we can read
1965 read_whatever_is_readable (ops
, offset
+ xfered
,
1966 offset
+ xfered
+ to_read
, &result
);
1971 struct memory_read_result r
;
1973 r
.begin
= offset
+ xfered
;
1974 r
.end
= r
.begin
+ xfer
;
1975 VEC_safe_push (memory_read_result_s
, result
, &r
);
1985 /* An alternative to target_write with progress callbacks. */
1988 target_write_with_progress (struct target_ops
*ops
,
1989 enum target_object object
,
1990 const char *annex
, const gdb_byte
*buf
,
1991 ULONGEST offset
, LONGEST len
,
1992 void (*progress
) (ULONGEST
, void *), void *baton
)
1996 /* Give the progress callback a chance to set up. */
1998 (*progress
) (0, baton
);
2000 while (xfered
< len
)
2002 ULONGEST xfered_len
;
2003 enum target_xfer_status status
;
2005 status
= target_write_partial (ops
, object
, annex
,
2006 (gdb_byte
*) buf
+ xfered
,
2007 offset
+ xfered
, len
- xfered
,
2010 if (status
== TARGET_XFER_EOF
)
2012 if (TARGET_XFER_STATUS_ERROR_P (status
))
2015 gdb_assert (status
== TARGET_XFER_OK
);
2017 (*progress
) (xfered_len
, baton
);
2019 xfered
+= xfered_len
;
2025 /* For docs on target_write see target.h. */
2028 target_write (struct target_ops
*ops
,
2029 enum target_object object
,
2030 const char *annex
, const gdb_byte
*buf
,
2031 ULONGEST offset
, LONGEST len
)
2033 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2037 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2038 the size of the transferred data. PADDING additional bytes are
2039 available in *BUF_P. This is a helper function for
2040 target_read_alloc; see the declaration of that function for more
2044 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2045 const char *annex
, gdb_byte
**buf_p
, int padding
)
2047 size_t buf_alloc
, buf_pos
;
2050 /* This function does not have a length parameter; it reads the
2051 entire OBJECT). Also, it doesn't support objects fetched partly
2052 from one target and partly from another (in a different stratum,
2053 e.g. a core file and an executable). Both reasons make it
2054 unsuitable for reading memory. */
2055 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2057 /* Start by reading up to 4K at a time. The target will throttle
2058 this number down if necessary. */
2060 buf
= xmalloc (buf_alloc
);
2064 ULONGEST xfered_len
;
2065 enum target_xfer_status status
;
2067 status
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2068 buf_pos
, buf_alloc
- buf_pos
- padding
,
2071 if (status
== TARGET_XFER_EOF
)
2073 /* Read all there was. */
2080 else if (status
!= TARGET_XFER_OK
)
2082 /* An error occurred. */
2084 return TARGET_XFER_E_IO
;
2087 buf_pos
+= xfered_len
;
2089 /* If the buffer is filling up, expand it. */
2090 if (buf_alloc
< buf_pos
* 2)
2093 buf
= xrealloc (buf
, buf_alloc
);
2100 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2101 the size of the transferred data. See the declaration in "target.h"
2102 function for more information about the return value. */
2105 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2106 const char *annex
, gdb_byte
**buf_p
)
2108 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2111 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2112 returned as a string, allocated using xmalloc. If an error occurs
2113 or the transfer is unsupported, NULL is returned. Empty objects
2114 are returned as allocated but empty strings. A warning is issued
2115 if the result contains any embedded NUL bytes. */
2118 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2123 LONGEST i
, transferred
;
2125 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2126 bufstr
= (char *) buffer
;
2128 if (transferred
< 0)
2131 if (transferred
== 0)
2132 return xstrdup ("");
2134 bufstr
[transferred
] = 0;
2136 /* Check for embedded NUL bytes; but allow trailing NULs. */
2137 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2140 warning (_("target object %d, annex %s, "
2141 "contained unexpected null characters"),
2142 (int) object
, annex
? annex
: "(none)");
2149 /* Memory transfer methods. */
2152 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2155 /* This method is used to read from an alternate, non-current
2156 target. This read must bypass the overlay support (as symbols
2157 don't match this target), and GDB's internal cache (wrong cache
2158 for this target). */
2159 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2161 memory_error (TARGET_XFER_E_IO
, addr
);
2165 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2166 int len
, enum bfd_endian byte_order
)
2168 gdb_byte buf
[sizeof (ULONGEST
)];
2170 gdb_assert (len
<= sizeof (buf
));
2171 get_target_memory (ops
, addr
, buf
, len
);
2172 return extract_unsigned_integer (buf
, len
, byte_order
);
2178 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2179 struct bp_target_info
*bp_tgt
)
2181 if (!may_insert_breakpoints
)
2183 warning (_("May not insert breakpoints"));
2187 return current_target
.to_insert_breakpoint (¤t_target
,
2194 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2195 struct bp_target_info
*bp_tgt
)
2197 /* This is kind of a weird case to handle, but the permission might
2198 have been changed after breakpoints were inserted - in which case
2199 we should just take the user literally and assume that any
2200 breakpoints should be left in place. */
2201 if (!may_insert_breakpoints
)
2203 warning (_("May not remove breakpoints"));
2207 return current_target
.to_remove_breakpoint (¤t_target
,
2212 target_info (char *args
, int from_tty
)
2214 struct target_ops
*t
;
2215 int has_all_mem
= 0;
2217 if (symfile_objfile
!= NULL
)
2218 printf_unfiltered (_("Symbols from \"%s\".\n"),
2219 objfile_name (symfile_objfile
));
2221 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2223 if (!(*t
->to_has_memory
) (t
))
2226 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2229 printf_unfiltered (_("\tWhile running this, "
2230 "GDB does not access memory from...\n"));
2231 printf_unfiltered ("%s:\n", t
->to_longname
);
2232 (t
->to_files_info
) (t
);
2233 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2237 /* This function is called before any new inferior is created, e.g.
2238 by running a program, attaching, or connecting to a target.
2239 It cleans up any state from previous invocations which might
2240 change between runs. This is a subset of what target_preopen
2241 resets (things which might change between targets). */
2244 target_pre_inferior (int from_tty
)
2246 /* Clear out solib state. Otherwise the solib state of the previous
2247 inferior might have survived and is entirely wrong for the new
2248 target. This has been observed on GNU/Linux using glibc 2.3. How
2260 Cannot access memory at address 0xdeadbeef
2263 /* In some OSs, the shared library list is the same/global/shared
2264 across inferiors. If code is shared between processes, so are
2265 memory regions and features. */
2266 if (!gdbarch_has_global_solist (target_gdbarch ()))
2268 no_shared_libraries (NULL
, from_tty
);
2270 invalidate_target_mem_regions ();
2272 target_clear_description ();
2275 agent_capability_invalidate ();
2278 /* Callback for iterate_over_inferiors. Gets rid of the given
2282 dispose_inferior (struct inferior
*inf
, void *args
)
2284 struct thread_info
*thread
;
2286 thread
= any_thread_of_process (inf
->pid
);
2289 switch_to_thread (thread
->ptid
);
2291 /* Core inferiors actually should be detached, not killed. */
2292 if (target_has_execution
)
2295 target_detach (NULL
, 0);
2301 /* This is to be called by the open routine before it does
2305 target_preopen (int from_tty
)
2309 if (have_inferiors ())
2312 || !have_live_inferiors ()
2313 || query (_("A program is being debugged already. Kill it? ")))
2314 iterate_over_inferiors (dispose_inferior
, NULL
);
2316 error (_("Program not killed."));
2319 /* Calling target_kill may remove the target from the stack. But if
2320 it doesn't (which seems like a win for UDI), remove it now. */
2321 /* Leave the exec target, though. The user may be switching from a
2322 live process to a core of the same program. */
2323 pop_all_targets_above (file_stratum
);
2325 target_pre_inferior (from_tty
);
2328 /* Detach a target after doing deferred register stores. */
2331 target_detach (const char *args
, int from_tty
)
2333 struct target_ops
* t
;
2335 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2336 /* Don't remove global breakpoints here. They're removed on
2337 disconnection from the target. */
2340 /* If we're in breakpoints-always-inserted mode, have to remove
2341 them before detaching. */
2342 remove_breakpoints_pid (ptid_get_pid (inferior_ptid
));
2344 prepare_for_detach ();
2346 current_target
.to_detach (¤t_target
, args
, from_tty
);
2348 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2353 target_disconnect (char *args
, int from_tty
)
2355 /* If we're in breakpoints-always-inserted mode or if breakpoints
2356 are global across processes, we have to remove them before
2358 remove_breakpoints ();
2361 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2363 current_target
.to_disconnect (¤t_target
, args
, from_tty
);
2367 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2369 struct target_ops
*t
;
2370 ptid_t retval
= (current_target
.to_wait
) (¤t_target
, ptid
,
2375 char *status_string
;
2376 char *options_string
;
2378 status_string
= target_waitstatus_to_string (status
);
2379 options_string
= target_options_to_string (options
);
2380 fprintf_unfiltered (gdb_stdlog
,
2381 "target_wait (%d, status, options={%s})"
2383 ptid_get_pid (ptid
), options_string
,
2384 ptid_get_pid (retval
), status_string
);
2385 xfree (status_string
);
2386 xfree (options_string
);
2393 target_pid_to_str (ptid_t ptid
)
2395 return (*current_target
.to_pid_to_str
) (¤t_target
, ptid
);
2399 target_thread_name (struct thread_info
*info
)
2401 return current_target
.to_thread_name (¤t_target
, info
);
2405 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2407 struct target_ops
*t
;
2409 target_dcache_invalidate ();
2411 current_target
.to_resume (¤t_target
, ptid
, step
, signal
);
2413 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2414 ptid_get_pid (ptid
),
2415 step
? "step" : "continue",
2416 gdb_signal_to_name (signal
));
2418 registers_changed_ptid (ptid
);
2419 set_executing (ptid
, 1);
2420 set_running (ptid
, 1);
2421 clear_inline_frame_state (ptid
);
2425 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2431 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2434 for (i
= 0; i
< numsigs
; i
++)
2435 if (pass_signals
[i
])
2436 fprintf_unfiltered (gdb_stdlog
, " %s",
2437 gdb_signal_to_name (i
));
2439 fprintf_unfiltered (gdb_stdlog
, " })\n");
2442 (*current_target
.to_pass_signals
) (¤t_target
, numsigs
, pass_signals
);
2446 target_program_signals (int numsigs
, unsigned char *program_signals
)
2452 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2455 for (i
= 0; i
< numsigs
; i
++)
2456 if (program_signals
[i
])
2457 fprintf_unfiltered (gdb_stdlog
, " %s",
2458 gdb_signal_to_name (i
));
2460 fprintf_unfiltered (gdb_stdlog
, " })\n");
2463 (*current_target
.to_program_signals
) (¤t_target
,
2464 numsigs
, program_signals
);
2468 default_follow_fork (struct target_ops
*self
, int follow_child
,
2471 /* Some target returned a fork event, but did not know how to follow it. */
2472 internal_error (__FILE__
, __LINE__
,
2473 _("could not find a target to follow fork"));
2476 /* Look through the list of possible targets for a target that can
2480 target_follow_fork (int follow_child
, int detach_fork
)
2482 int retval
= current_target
.to_follow_fork (¤t_target
,
2483 follow_child
, detach_fork
);
2486 fprintf_unfiltered (gdb_stdlog
,
2487 "target_follow_fork (%d, %d) = %d\n",
2488 follow_child
, detach_fork
, retval
);
2493 default_mourn_inferior (struct target_ops
*self
)
2495 internal_error (__FILE__
, __LINE__
,
2496 _("could not find a target to follow mourn inferior"));
2500 target_mourn_inferior (void)
2502 current_target
.to_mourn_inferior (¤t_target
);
2504 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2506 /* We no longer need to keep handles on any of the object files.
2507 Make sure to release them to avoid unnecessarily locking any
2508 of them while we're not actually debugging. */
2509 bfd_cache_close_all ();
2512 /* Look for a target which can describe architectural features, starting
2513 from TARGET. If we find one, return its description. */
2515 const struct target_desc
*
2516 target_read_description (struct target_ops
*target
)
2518 return target
->to_read_description (target
);
2521 /* This implements a basic search of memory, reading target memory and
2522 performing the search here (as opposed to performing the search in on the
2523 target side with, for example, gdbserver). */
2526 simple_search_memory (struct target_ops
*ops
,
2527 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2528 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2529 CORE_ADDR
*found_addrp
)
2531 /* NOTE: also defined in find.c testcase. */
2532 #define SEARCH_CHUNK_SIZE 16000
2533 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2534 /* Buffer to hold memory contents for searching. */
2535 gdb_byte
*search_buf
;
2536 unsigned search_buf_size
;
2537 struct cleanup
*old_cleanups
;
2539 search_buf_size
= chunk_size
+ pattern_len
- 1;
2541 /* No point in trying to allocate a buffer larger than the search space. */
2542 if (search_space_len
< search_buf_size
)
2543 search_buf_size
= search_space_len
;
2545 search_buf
= malloc (search_buf_size
);
2546 if (search_buf
== NULL
)
2547 error (_("Unable to allocate memory to perform the search."));
2548 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2550 /* Prime the search buffer. */
2552 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2553 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2555 warning (_("Unable to access %s bytes of target "
2556 "memory at %s, halting search."),
2557 pulongest (search_buf_size
), hex_string (start_addr
));
2558 do_cleanups (old_cleanups
);
2562 /* Perform the search.
2564 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2565 When we've scanned N bytes we copy the trailing bytes to the start and
2566 read in another N bytes. */
2568 while (search_space_len
>= pattern_len
)
2570 gdb_byte
*found_ptr
;
2571 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2573 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2574 pattern
, pattern_len
);
2576 if (found_ptr
!= NULL
)
2578 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2580 *found_addrp
= found_addr
;
2581 do_cleanups (old_cleanups
);
2585 /* Not found in this chunk, skip to next chunk. */
2587 /* Don't let search_space_len wrap here, it's unsigned. */
2588 if (search_space_len
>= chunk_size
)
2589 search_space_len
-= chunk_size
;
2591 search_space_len
= 0;
2593 if (search_space_len
>= pattern_len
)
2595 unsigned keep_len
= search_buf_size
- chunk_size
;
2596 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2599 /* Copy the trailing part of the previous iteration to the front
2600 of the buffer for the next iteration. */
2601 gdb_assert (keep_len
== pattern_len
- 1);
2602 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2604 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2606 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2607 search_buf
+ keep_len
, read_addr
,
2608 nr_to_read
) != nr_to_read
)
2610 warning (_("Unable to access %s bytes of target "
2611 "memory at %s, halting search."),
2612 plongest (nr_to_read
),
2613 hex_string (read_addr
));
2614 do_cleanups (old_cleanups
);
2618 start_addr
+= chunk_size
;
2624 do_cleanups (old_cleanups
);
2628 /* Default implementation of memory-searching. */
2631 default_search_memory (struct target_ops
*self
,
2632 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2633 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2634 CORE_ADDR
*found_addrp
)
2636 /* Start over from the top of the target stack. */
2637 return simple_search_memory (current_target
.beneath
,
2638 start_addr
, search_space_len
,
2639 pattern
, pattern_len
, found_addrp
);
2642 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2643 sequence of bytes in PATTERN with length PATTERN_LEN.
2645 The result is 1 if found, 0 if not found, and -1 if there was an error
2646 requiring halting of the search (e.g. memory read error).
2647 If the pattern is found the address is recorded in FOUND_ADDRP. */
2650 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2651 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2652 CORE_ADDR
*found_addrp
)
2657 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2658 hex_string (start_addr
));
2660 found
= current_target
.to_search_memory (¤t_target
, start_addr
,
2662 pattern
, pattern_len
, found_addrp
);
2665 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2670 /* Look through the currently pushed targets. If none of them will
2671 be able to restart the currently running process, issue an error
2675 target_require_runnable (void)
2677 struct target_ops
*t
;
2679 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2681 /* If this target knows how to create a new program, then
2682 assume we will still be able to after killing the current
2683 one. Either killing and mourning will not pop T, or else
2684 find_default_run_target will find it again. */
2685 if (t
->to_create_inferior
!= NULL
)
2688 /* Do not worry about thread_stratum targets that can not
2689 create inferiors. Assume they will be pushed again if
2690 necessary, and continue to the process_stratum. */
2691 if (t
->to_stratum
== thread_stratum
2692 || t
->to_stratum
== arch_stratum
)
2695 error (_("The \"%s\" target does not support \"run\". "
2696 "Try \"help target\" or \"continue\"."),
2700 /* This function is only called if the target is running. In that
2701 case there should have been a process_stratum target and it
2702 should either know how to create inferiors, or not... */
2703 internal_error (__FILE__
, __LINE__
, _("No targets found"));
2706 /* Look through the list of possible targets for a target that can
2707 execute a run or attach command without any other data. This is
2708 used to locate the default process stratum.
2710 If DO_MESG is not NULL, the result is always valid (error() is
2711 called for errors); else, return NULL on error. */
2713 static struct target_ops
*
2714 find_default_run_target (char *do_mesg
)
2716 struct target_ops
**t
;
2717 struct target_ops
*runable
= NULL
;
2722 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2725 if ((*t
)->to_can_run
!= delegate_can_run
&& target_can_run (*t
))
2735 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
2744 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
2746 struct target_ops
*t
;
2748 t
= find_default_run_target ("attach");
2749 (t
->to_attach
) (t
, args
, from_tty
);
2754 find_default_create_inferior (struct target_ops
*ops
,
2755 char *exec_file
, char *allargs
, char **env
,
2758 struct target_ops
*t
;
2760 t
= find_default_run_target ("run");
2761 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
2766 find_default_can_async_p (struct target_ops
*ignore
)
2768 struct target_ops
*t
;
2770 /* This may be called before the target is pushed on the stack;
2771 look for the default process stratum. If there's none, gdb isn't
2772 configured with a native debugger, and target remote isn't
2774 t
= find_default_run_target (NULL
);
2775 if (t
&& t
->to_can_async_p
!= delegate_can_async_p
)
2776 return (t
->to_can_async_p
) (t
);
2781 find_default_is_async_p (struct target_ops
*ignore
)
2783 struct target_ops
*t
;
2785 /* This may be called before the target is pushed on the stack;
2786 look for the default process stratum. If there's none, gdb isn't
2787 configured with a native debugger, and target remote isn't
2789 t
= find_default_run_target (NULL
);
2790 if (t
&& t
->to_is_async_p
!= delegate_is_async_p
)
2791 return (t
->to_is_async_p
) (t
);
2796 find_default_supports_non_stop (struct target_ops
*self
)
2798 struct target_ops
*t
;
2800 t
= find_default_run_target (NULL
);
2801 if (t
&& t
->to_supports_non_stop
)
2802 return (t
->to_supports_non_stop
) (t
);
2807 target_supports_non_stop (void)
2809 struct target_ops
*t
;
2811 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
2812 if (t
->to_supports_non_stop
)
2813 return t
->to_supports_non_stop (t
);
2818 /* Implement the "info proc" command. */
2821 target_info_proc (char *args
, enum info_proc_what what
)
2823 struct target_ops
*t
;
2825 /* If we're already connected to something that can get us OS
2826 related data, use it. Otherwise, try using the native
2828 if (current_target
.to_stratum
>= process_stratum
)
2829 t
= current_target
.beneath
;
2831 t
= find_default_run_target (NULL
);
2833 for (; t
!= NULL
; t
= t
->beneath
)
2835 if (t
->to_info_proc
!= NULL
)
2837 t
->to_info_proc (t
, args
, what
);
2840 fprintf_unfiltered (gdb_stdlog
,
2841 "target_info_proc (\"%s\", %d)\n", args
, what
);
2851 find_default_supports_disable_randomization (struct target_ops
*self
)
2853 struct target_ops
*t
;
2855 t
= find_default_run_target (NULL
);
2856 if (t
&& t
->to_supports_disable_randomization
)
2857 return (t
->to_supports_disable_randomization
) (t
);
2862 target_supports_disable_randomization (void)
2864 struct target_ops
*t
;
2866 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
2867 if (t
->to_supports_disable_randomization
)
2868 return t
->to_supports_disable_randomization (t
);
2874 target_get_osdata (const char *type
)
2876 struct target_ops
*t
;
2878 /* If we're already connected to something that can get us OS
2879 related data, use it. Otherwise, try using the native
2881 if (current_target
.to_stratum
>= process_stratum
)
2882 t
= current_target
.beneath
;
2884 t
= find_default_run_target ("get OS data");
2889 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
2892 /* Determine the current address space of thread PTID. */
2894 struct address_space
*
2895 target_thread_address_space (ptid_t ptid
)
2897 struct address_space
*aspace
;
2898 struct inferior
*inf
;
2899 struct target_ops
*t
;
2901 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2903 if (t
->to_thread_address_space
!= NULL
)
2905 aspace
= t
->to_thread_address_space (t
, ptid
);
2906 gdb_assert (aspace
);
2909 fprintf_unfiltered (gdb_stdlog
,
2910 "target_thread_address_space (%s) = %d\n",
2911 target_pid_to_str (ptid
),
2912 address_space_num (aspace
));
2917 /* Fall-back to the "main" address space of the inferior. */
2918 inf
= find_inferior_pid (ptid_get_pid (ptid
));
2920 if (inf
== NULL
|| inf
->aspace
== NULL
)
2921 internal_error (__FILE__
, __LINE__
,
2922 _("Can't determine the current "
2923 "address space of thread %s\n"),
2924 target_pid_to_str (ptid
));
2930 /* Target file operations. */
2932 static struct target_ops
*
2933 default_fileio_target (void)
2935 /* If we're already connected to something that can perform
2936 file I/O, use it. Otherwise, try using the native target. */
2937 if (current_target
.to_stratum
>= process_stratum
)
2938 return current_target
.beneath
;
2940 return find_default_run_target ("file I/O");
2943 /* Open FILENAME on the target, using FLAGS and MODE. Return a
2944 target file descriptor, or -1 if an error occurs (and set
2947 target_fileio_open (const char *filename
, int flags
, int mode
,
2950 struct target_ops
*t
;
2952 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
2954 if (t
->to_fileio_open
!= NULL
)
2956 int fd
= t
->to_fileio_open (t
, filename
, flags
, mode
, target_errno
);
2959 fprintf_unfiltered (gdb_stdlog
,
2960 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
2961 filename
, flags
, mode
,
2962 fd
, fd
!= -1 ? 0 : *target_errno
);
2967 *target_errno
= FILEIO_ENOSYS
;
2971 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
2972 Return the number of bytes written, or -1 if an error occurs
2973 (and set *TARGET_ERRNO). */
2975 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
2976 ULONGEST offset
, int *target_errno
)
2978 struct target_ops
*t
;
2980 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
2982 if (t
->to_fileio_pwrite
!= NULL
)
2984 int ret
= t
->to_fileio_pwrite (t
, fd
, write_buf
, len
, offset
,
2988 fprintf_unfiltered (gdb_stdlog
,
2989 "target_fileio_pwrite (%d,...,%d,%s) "
2991 fd
, len
, pulongest (offset
),
2992 ret
, ret
!= -1 ? 0 : *target_errno
);
2997 *target_errno
= FILEIO_ENOSYS
;
3001 /* Read up to LEN bytes FD on the target into READ_BUF.
3002 Return the number of bytes read, or -1 if an error occurs
3003 (and set *TARGET_ERRNO). */
3005 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3006 ULONGEST offset
, int *target_errno
)
3008 struct target_ops
*t
;
3010 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3012 if (t
->to_fileio_pread
!= NULL
)
3014 int ret
= t
->to_fileio_pread (t
, fd
, read_buf
, len
, offset
,
3018 fprintf_unfiltered (gdb_stdlog
,
3019 "target_fileio_pread (%d,...,%d,%s) "
3021 fd
, len
, pulongest (offset
),
3022 ret
, ret
!= -1 ? 0 : *target_errno
);
3027 *target_errno
= FILEIO_ENOSYS
;
3031 /* Close FD on the target. Return 0, or -1 if an error occurs
3032 (and set *TARGET_ERRNO). */
3034 target_fileio_close (int fd
, int *target_errno
)
3036 struct target_ops
*t
;
3038 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3040 if (t
->to_fileio_close
!= NULL
)
3042 int ret
= t
->to_fileio_close (t
, fd
, target_errno
);
3045 fprintf_unfiltered (gdb_stdlog
,
3046 "target_fileio_close (%d) = %d (%d)\n",
3047 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3052 *target_errno
= FILEIO_ENOSYS
;
3056 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3057 occurs (and set *TARGET_ERRNO). */
3059 target_fileio_unlink (const char *filename
, int *target_errno
)
3061 struct target_ops
*t
;
3063 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3065 if (t
->to_fileio_unlink
!= NULL
)
3067 int ret
= t
->to_fileio_unlink (t
, filename
, target_errno
);
3070 fprintf_unfiltered (gdb_stdlog
,
3071 "target_fileio_unlink (%s) = %d (%d)\n",
3072 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3077 *target_errno
= FILEIO_ENOSYS
;
3081 /* Read value of symbolic link FILENAME on the target. Return a
3082 null-terminated string allocated via xmalloc, or NULL if an error
3083 occurs (and set *TARGET_ERRNO). */
3085 target_fileio_readlink (const char *filename
, int *target_errno
)
3087 struct target_ops
*t
;
3089 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3091 if (t
->to_fileio_readlink
!= NULL
)
3093 char *ret
= t
->to_fileio_readlink (t
, filename
, target_errno
);
3096 fprintf_unfiltered (gdb_stdlog
,
3097 "target_fileio_readlink (%s) = %s (%d)\n",
3098 filename
, ret
? ret
: "(nil)",
3099 ret
? 0 : *target_errno
);
3104 *target_errno
= FILEIO_ENOSYS
;
3109 target_fileio_close_cleanup (void *opaque
)
3111 int fd
= *(int *) opaque
;
3114 target_fileio_close (fd
, &target_errno
);
3117 /* Read target file FILENAME. Store the result in *BUF_P and
3118 return the size of the transferred data. PADDING additional bytes are
3119 available in *BUF_P. This is a helper function for
3120 target_fileio_read_alloc; see the declaration of that function for more
3124 target_fileio_read_alloc_1 (const char *filename
,
3125 gdb_byte
**buf_p
, int padding
)
3127 struct cleanup
*close_cleanup
;
3128 size_t buf_alloc
, buf_pos
;
3134 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3138 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3140 /* Start by reading up to 4K at a time. The target will throttle
3141 this number down if necessary. */
3143 buf
= xmalloc (buf_alloc
);
3147 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3148 buf_alloc
- buf_pos
- padding
, buf_pos
,
3152 /* An error occurred. */
3153 do_cleanups (close_cleanup
);
3159 /* Read all there was. */
3160 do_cleanups (close_cleanup
);
3170 /* If the buffer is filling up, expand it. */
3171 if (buf_alloc
< buf_pos
* 2)
3174 buf
= xrealloc (buf
, buf_alloc
);
3181 /* Read target file FILENAME. Store the result in *BUF_P and return
3182 the size of the transferred data. See the declaration in "target.h"
3183 function for more information about the return value. */
3186 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3188 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3191 /* Read target file FILENAME. The result is NUL-terminated and
3192 returned as a string, allocated using xmalloc. If an error occurs
3193 or the transfer is unsupported, NULL is returned. Empty objects
3194 are returned as allocated but empty strings. A warning is issued
3195 if the result contains any embedded NUL bytes. */
3198 target_fileio_read_stralloc (const char *filename
)
3202 LONGEST i
, transferred
;
3204 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3205 bufstr
= (char *) buffer
;
3207 if (transferred
< 0)
3210 if (transferred
== 0)
3211 return xstrdup ("");
3213 bufstr
[transferred
] = 0;
3215 /* Check for embedded NUL bytes; but allow trailing NULs. */
3216 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3219 warning (_("target file %s "
3220 "contained unexpected null characters"),
3230 default_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3231 CORE_ADDR addr
, int len
)
3233 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3237 default_watchpoint_addr_within_range (struct target_ops
*target
,
3239 CORE_ADDR start
, int length
)
3241 return addr
>= start
&& addr
< start
+ length
;
3244 static struct gdbarch
*
3245 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3247 return target_gdbarch ();
3251 return_zero (struct target_ops
*ignore
)
3257 return_zero_has_execution (struct target_ops
*ignore
, ptid_t ignore2
)
3263 * Find the next target down the stack from the specified target.
3267 find_target_beneath (struct target_ops
*t
)
3275 find_target_at (enum strata stratum
)
3277 struct target_ops
*t
;
3279 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3280 if (t
->to_stratum
== stratum
)
3287 /* The inferior process has died. Long live the inferior! */
3290 generic_mourn_inferior (void)
3294 ptid
= inferior_ptid
;
3295 inferior_ptid
= null_ptid
;
3297 /* Mark breakpoints uninserted in case something tries to delete a
3298 breakpoint while we delete the inferior's threads (which would
3299 fail, since the inferior is long gone). */
3300 mark_breakpoints_out ();
3302 if (!ptid_equal (ptid
, null_ptid
))
3304 int pid
= ptid_get_pid (ptid
);
3305 exit_inferior (pid
);
3308 /* Note this wipes step-resume breakpoints, so needs to be done
3309 after exit_inferior, which ends up referencing the step-resume
3310 breakpoints through clear_thread_inferior_resources. */
3311 breakpoint_init_inferior (inf_exited
);
3313 registers_changed ();
3315 reopen_exec_file ();
3316 reinit_frame_cache ();
3318 if (deprecated_detach_hook
)
3319 deprecated_detach_hook ();
3322 /* Convert a normal process ID to a string. Returns the string in a
3326 normal_pid_to_str (ptid_t ptid
)
3328 static char buf
[32];
3330 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3335 default_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3337 return normal_pid_to_str (ptid
);
3340 /* Error-catcher for target_find_memory_regions. */
3342 dummy_find_memory_regions (struct target_ops
*self
,
3343 find_memory_region_ftype ignore1
, void *ignore2
)
3345 error (_("Command not implemented for this target."));
3349 /* Error-catcher for target_make_corefile_notes. */
3351 dummy_make_corefile_notes (struct target_ops
*self
,
3352 bfd
*ignore1
, int *ignore2
)
3354 error (_("Command not implemented for this target."));
3358 /* Set up the handful of non-empty slots needed by the dummy target
3362 init_dummy_target (void)
3364 dummy_target
.to_shortname
= "None";
3365 dummy_target
.to_longname
= "None";
3366 dummy_target
.to_doc
= "";
3367 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3368 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3369 dummy_target
.to_supports_disable_randomization
3370 = find_default_supports_disable_randomization
;
3371 dummy_target
.to_stratum
= dummy_stratum
;
3372 dummy_target
.to_has_all_memory
= return_zero
;
3373 dummy_target
.to_has_memory
= return_zero
;
3374 dummy_target
.to_has_stack
= return_zero
;
3375 dummy_target
.to_has_registers
= return_zero
;
3376 dummy_target
.to_has_execution
= return_zero_has_execution
;
3377 dummy_target
.to_magic
= OPS_MAGIC
;
3379 install_dummy_methods (&dummy_target
);
3383 debug_to_open (char *args
, int from_tty
)
3385 debug_target
.to_open (args
, from_tty
);
3387 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3391 target_close (struct target_ops
*targ
)
3393 gdb_assert (!target_is_pushed (targ
));
3395 if (targ
->to_xclose
!= NULL
)
3396 targ
->to_xclose (targ
);
3397 else if (targ
->to_close
!= NULL
)
3398 targ
->to_close (targ
);
3401 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3405 target_attach (char *args
, int from_tty
)
3407 current_target
.to_attach (¤t_target
, args
, from_tty
);
3409 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3414 target_thread_alive (ptid_t ptid
)
3418 retval
= current_target
.to_thread_alive (¤t_target
, ptid
);
3420 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3421 ptid_get_pid (ptid
), retval
);
3427 target_find_new_threads (void)
3429 current_target
.to_find_new_threads (¤t_target
);
3431 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3435 target_stop (ptid_t ptid
)
3439 warning (_("May not interrupt or stop the target, ignoring attempt"));
3443 (*current_target
.to_stop
) (¤t_target
, ptid
);
3447 debug_to_post_attach (struct target_ops
*self
, int pid
)
3449 debug_target
.to_post_attach (&debug_target
, pid
);
3451 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3454 /* Concatenate ELEM to LIST, a comma separate list, and return the
3455 result. The LIST incoming argument is released. */
3458 str_comma_list_concat_elem (char *list
, const char *elem
)
3461 return xstrdup (elem
);
3463 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3466 /* Helper for target_options_to_string. If OPT is present in
3467 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3468 Returns the new resulting string. OPT is removed from
3472 do_option (int *target_options
, char *ret
,
3473 int opt
, char *opt_str
)
3475 if ((*target_options
& opt
) != 0)
3477 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3478 *target_options
&= ~opt
;
3485 target_options_to_string (int target_options
)
3489 #define DO_TARG_OPTION(OPT) \
3490 ret = do_option (&target_options, ret, OPT, #OPT)
3492 DO_TARG_OPTION (TARGET_WNOHANG
);
3494 if (target_options
!= 0)
3495 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3503 debug_print_register (const char * func
,
3504 struct regcache
*regcache
, int regno
)
3506 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3508 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3509 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3510 && gdbarch_register_name (gdbarch
, regno
) != NULL
3511 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3512 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3513 gdbarch_register_name (gdbarch
, regno
));
3515 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3516 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3518 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3519 int i
, size
= register_size (gdbarch
, regno
);
3520 gdb_byte buf
[MAX_REGISTER_SIZE
];
3522 regcache_raw_collect (regcache
, regno
, buf
);
3523 fprintf_unfiltered (gdb_stdlog
, " = ");
3524 for (i
= 0; i
< size
; i
++)
3526 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3528 if (size
<= sizeof (LONGEST
))
3530 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3532 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3533 core_addr_to_string_nz (val
), plongest (val
));
3536 fprintf_unfiltered (gdb_stdlog
, "\n");
3540 target_fetch_registers (struct regcache
*regcache
, int regno
)
3542 current_target
.to_fetch_registers (¤t_target
, regcache
, regno
);
3544 debug_print_register ("target_fetch_registers", regcache
, regno
);
3548 target_store_registers (struct regcache
*regcache
, int regno
)
3550 struct target_ops
*t
;
3552 if (!may_write_registers
)
3553 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3555 current_target
.to_store_registers (¤t_target
, regcache
, regno
);
3558 debug_print_register ("target_store_registers", regcache
, regno
);
3563 target_core_of_thread (ptid_t ptid
)
3565 int retval
= current_target
.to_core_of_thread (¤t_target
, ptid
);
3568 fprintf_unfiltered (gdb_stdlog
,
3569 "target_core_of_thread (%d) = %d\n",
3570 ptid_get_pid (ptid
), retval
);
3575 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3577 int retval
= current_target
.to_verify_memory (¤t_target
,
3578 data
, memaddr
, size
);
3581 fprintf_unfiltered (gdb_stdlog
,
3582 "target_verify_memory (%s, %s) = %d\n",
3583 paddress (target_gdbarch (), memaddr
),
3589 /* The documentation for this function is in its prototype declaration in
3593 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3597 ret
= current_target
.to_insert_mask_watchpoint (¤t_target
,
3601 fprintf_unfiltered (gdb_stdlog
, "\
3602 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3603 core_addr_to_string (addr
),
3604 core_addr_to_string (mask
), rw
, ret
);
3609 /* The documentation for this function is in its prototype declaration in
3613 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3617 ret
= current_target
.to_remove_mask_watchpoint (¤t_target
,
3621 fprintf_unfiltered (gdb_stdlog
, "\
3622 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3623 core_addr_to_string (addr
),
3624 core_addr_to_string (mask
), rw
, ret
);
3629 /* The documentation for this function is in its prototype declaration
3633 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
3635 return current_target
.to_masked_watch_num_registers (¤t_target
,
3639 /* The documentation for this function is in its prototype declaration
3643 target_ranged_break_num_registers (void)
3645 return current_target
.to_ranged_break_num_registers (¤t_target
);
3650 struct btrace_target_info
*
3651 target_enable_btrace (ptid_t ptid
)
3653 return current_target
.to_enable_btrace (¤t_target
, ptid
);
3659 target_disable_btrace (struct btrace_target_info
*btinfo
)
3661 current_target
.to_disable_btrace (¤t_target
, btinfo
);
3667 target_teardown_btrace (struct btrace_target_info
*btinfo
)
3669 current_target
.to_teardown_btrace (¤t_target
, btinfo
);
3675 target_read_btrace (VEC (btrace_block_s
) **btrace
,
3676 struct btrace_target_info
*btinfo
,
3677 enum btrace_read_type type
)
3679 return current_target
.to_read_btrace (¤t_target
, btrace
, btinfo
, type
);
3685 target_stop_recording (void)
3687 current_target
.to_stop_recording (¤t_target
);
3693 target_info_record (void)
3695 struct target_ops
*t
;
3697 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3698 if (t
->to_info_record
!= NULL
)
3700 t
->to_info_record (t
);
3710 target_save_record (const char *filename
)
3712 current_target
.to_save_record (¤t_target
, filename
);
3718 target_supports_delete_record (void)
3720 struct target_ops
*t
;
3722 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3723 if (t
->to_delete_record
!= NULL
)
3732 target_delete_record (void)
3734 current_target
.to_delete_record (¤t_target
);
3740 target_record_is_replaying (void)
3742 return current_target
.to_record_is_replaying (¤t_target
);
3748 target_goto_record_begin (void)
3750 current_target
.to_goto_record_begin (¤t_target
);
3756 target_goto_record_end (void)
3758 current_target
.to_goto_record_end (¤t_target
);
3764 target_goto_record (ULONGEST insn
)
3766 current_target
.to_goto_record (¤t_target
, insn
);
3772 target_insn_history (int size
, int flags
)
3774 current_target
.to_insn_history (¤t_target
, size
, flags
);
3780 target_insn_history_from (ULONGEST from
, int size
, int flags
)
3782 current_target
.to_insn_history_from (¤t_target
, from
, size
, flags
);
3788 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
3790 current_target
.to_insn_history_range (¤t_target
, begin
, end
, flags
);
3796 target_call_history (int size
, int flags
)
3798 current_target
.to_call_history (¤t_target
, size
, flags
);
3804 target_call_history_from (ULONGEST begin
, int size
, int flags
)
3806 current_target
.to_call_history_from (¤t_target
, begin
, size
, flags
);
3812 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
3814 current_target
.to_call_history_range (¤t_target
, begin
, end
, flags
);
3818 debug_to_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
3820 debug_target
.to_prepare_to_store (&debug_target
, regcache
);
3822 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
3827 const struct frame_unwind
*
3828 target_get_unwinder (void)
3830 struct target_ops
*t
;
3832 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3833 if (t
->to_get_unwinder
!= NULL
)
3834 return t
->to_get_unwinder
;
3841 const struct frame_unwind
*
3842 target_get_tailcall_unwinder (void)
3844 struct target_ops
*t
;
3846 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3847 if (t
->to_get_tailcall_unwinder
!= NULL
)
3848 return t
->to_get_tailcall_unwinder
;
3856 forward_target_decr_pc_after_break (struct target_ops
*ops
,
3857 struct gdbarch
*gdbarch
)
3859 for (; ops
!= NULL
; ops
= ops
->beneath
)
3860 if (ops
->to_decr_pc_after_break
!= NULL
)
3861 return ops
->to_decr_pc_after_break (ops
, gdbarch
);
3863 return gdbarch_decr_pc_after_break (gdbarch
);
3869 target_decr_pc_after_break (struct gdbarch
*gdbarch
)
3871 return forward_target_decr_pc_after_break (current_target
.beneath
, gdbarch
);
3875 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
3876 int write
, struct mem_attrib
*attrib
,
3877 struct target_ops
*target
)
3881 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
3884 fprintf_unfiltered (gdb_stdlog
,
3885 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
3886 paddress (target_gdbarch (), memaddr
), len
,
3887 write
? "write" : "read", retval
);
3893 fputs_unfiltered (", bytes =", gdb_stdlog
);
3894 for (i
= 0; i
< retval
; i
++)
3896 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
3898 if (targetdebug
< 2 && i
> 0)
3900 fprintf_unfiltered (gdb_stdlog
, " ...");
3903 fprintf_unfiltered (gdb_stdlog
, "\n");
3906 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
3910 fputc_unfiltered ('\n', gdb_stdlog
);
3916 debug_to_files_info (struct target_ops
*target
)
3918 debug_target
.to_files_info (target
);
3920 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
3924 debug_to_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
3925 struct bp_target_info
*bp_tgt
)
3929 retval
= debug_target
.to_insert_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
3931 fprintf_unfiltered (gdb_stdlog
,
3932 "target_insert_breakpoint (%s, xxx) = %ld\n",
3933 core_addr_to_string (bp_tgt
->placed_address
),
3934 (unsigned long) retval
);
3939 debug_to_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
3940 struct bp_target_info
*bp_tgt
)
3944 retval
= debug_target
.to_remove_breakpoint (&debug_target
, gdbarch
, bp_tgt
);
3946 fprintf_unfiltered (gdb_stdlog
,
3947 "target_remove_breakpoint (%s, xxx) = %ld\n",
3948 core_addr_to_string (bp_tgt
->placed_address
),
3949 (unsigned long) retval
);
3954 debug_to_can_use_hw_breakpoint (struct target_ops
*self
,
3955 int type
, int cnt
, int from_tty
)
3959 retval
= debug_target
.to_can_use_hw_breakpoint (&debug_target
,
3960 type
, cnt
, from_tty
);
3962 fprintf_unfiltered (gdb_stdlog
,
3963 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
3964 (unsigned long) type
,
3965 (unsigned long) cnt
,
3966 (unsigned long) from_tty
,
3967 (unsigned long) retval
);
3972 debug_to_region_ok_for_hw_watchpoint (struct target_ops
*self
,
3973 CORE_ADDR addr
, int len
)
3977 retval
= debug_target
.to_region_ok_for_hw_watchpoint (&debug_target
,
3980 fprintf_unfiltered (gdb_stdlog
,
3981 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
3982 core_addr_to_string (addr
), (unsigned long) len
,
3983 core_addr_to_string (retval
));
3988 debug_to_can_accel_watchpoint_condition (struct target_ops
*self
,
3989 CORE_ADDR addr
, int len
, int rw
,
3990 struct expression
*cond
)
3994 retval
= debug_target
.to_can_accel_watchpoint_condition (&debug_target
,
3998 fprintf_unfiltered (gdb_stdlog
,
3999 "target_can_accel_watchpoint_condition "
4000 "(%s, %d, %d, %s) = %ld\n",
4001 core_addr_to_string (addr
), len
, rw
,
4002 host_address_to_string (cond
), (unsigned long) retval
);
4007 debug_to_stopped_by_watchpoint (struct target_ops
*ops
)
4011 retval
= debug_target
.to_stopped_by_watchpoint (&debug_target
);
4013 fprintf_unfiltered (gdb_stdlog
,
4014 "target_stopped_by_watchpoint () = %ld\n",
4015 (unsigned long) retval
);
4020 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4024 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4026 fprintf_unfiltered (gdb_stdlog
,
4027 "target_stopped_data_address ([%s]) = %ld\n",
4028 core_addr_to_string (*addr
),
4029 (unsigned long)retval
);
4034 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4036 CORE_ADDR start
, int length
)
4040 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4043 fprintf_filtered (gdb_stdlog
,
4044 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4045 core_addr_to_string (addr
), core_addr_to_string (start
),
4051 debug_to_insert_hw_breakpoint (struct target_ops
*self
,
4052 struct gdbarch
*gdbarch
,
4053 struct bp_target_info
*bp_tgt
)
4057 retval
= debug_target
.to_insert_hw_breakpoint (&debug_target
,
4060 fprintf_unfiltered (gdb_stdlog
,
4061 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4062 core_addr_to_string (bp_tgt
->placed_address
),
4063 (unsigned long) retval
);
4068 debug_to_remove_hw_breakpoint (struct target_ops
*self
,
4069 struct gdbarch
*gdbarch
,
4070 struct bp_target_info
*bp_tgt
)
4074 retval
= debug_target
.to_remove_hw_breakpoint (&debug_target
,
4077 fprintf_unfiltered (gdb_stdlog
,
4078 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4079 core_addr_to_string (bp_tgt
->placed_address
),
4080 (unsigned long) retval
);
4085 debug_to_insert_watchpoint (struct target_ops
*self
,
4086 CORE_ADDR addr
, int len
, int type
,
4087 struct expression
*cond
)
4091 retval
= debug_target
.to_insert_watchpoint (&debug_target
,
4092 addr
, len
, type
, cond
);
4094 fprintf_unfiltered (gdb_stdlog
,
4095 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4096 core_addr_to_string (addr
), len
, type
,
4097 host_address_to_string (cond
), (unsigned long) retval
);
4102 debug_to_remove_watchpoint (struct target_ops
*self
,
4103 CORE_ADDR addr
, int len
, int type
,
4104 struct expression
*cond
)
4108 retval
= debug_target
.to_remove_watchpoint (&debug_target
,
4109 addr
, len
, type
, cond
);
4111 fprintf_unfiltered (gdb_stdlog
,
4112 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4113 core_addr_to_string (addr
), len
, type
,
4114 host_address_to_string (cond
), (unsigned long) retval
);
4119 debug_to_terminal_init (struct target_ops
*self
)
4121 debug_target
.to_terminal_init (&debug_target
);
4123 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4127 debug_to_terminal_inferior (struct target_ops
*self
)
4129 debug_target
.to_terminal_inferior (&debug_target
);
4131 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4135 debug_to_terminal_ours_for_output (struct target_ops
*self
)
4137 debug_target
.to_terminal_ours_for_output (&debug_target
);
4139 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4143 debug_to_terminal_ours (struct target_ops
*self
)
4145 debug_target
.to_terminal_ours (&debug_target
);
4147 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4151 debug_to_terminal_save_ours (struct target_ops
*self
)
4153 debug_target
.to_terminal_save_ours (&debug_target
);
4155 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4159 debug_to_terminal_info (struct target_ops
*self
,
4160 const char *arg
, int from_tty
)
4162 debug_target
.to_terminal_info (&debug_target
, arg
, from_tty
);
4164 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4169 debug_to_load (struct target_ops
*self
, char *args
, int from_tty
)
4171 debug_target
.to_load (&debug_target
, args
, from_tty
);
4173 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4177 debug_to_post_startup_inferior (struct target_ops
*self
, ptid_t ptid
)
4179 debug_target
.to_post_startup_inferior (&debug_target
, ptid
);
4181 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4182 ptid_get_pid (ptid
));
4186 debug_to_insert_fork_catchpoint (struct target_ops
*self
, int pid
)
4190 retval
= debug_target
.to_insert_fork_catchpoint (&debug_target
, pid
);
4192 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4199 debug_to_remove_fork_catchpoint (struct target_ops
*self
, int pid
)
4203 retval
= debug_target
.to_remove_fork_catchpoint (&debug_target
, pid
);
4205 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4212 debug_to_insert_vfork_catchpoint (struct target_ops
*self
, int pid
)
4216 retval
= debug_target
.to_insert_vfork_catchpoint (&debug_target
, pid
);
4218 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4225 debug_to_remove_vfork_catchpoint (struct target_ops
*self
, int pid
)
4229 retval
= debug_target
.to_remove_vfork_catchpoint (&debug_target
, pid
);
4231 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4238 debug_to_insert_exec_catchpoint (struct target_ops
*self
, int pid
)
4242 retval
= debug_target
.to_insert_exec_catchpoint (&debug_target
, pid
);
4244 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4251 debug_to_remove_exec_catchpoint (struct target_ops
*self
, int pid
)
4255 retval
= debug_target
.to_remove_exec_catchpoint (&debug_target
, pid
);
4257 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4264 debug_to_has_exited (struct target_ops
*self
,
4265 int pid
, int wait_status
, int *exit_status
)
4269 has_exited
= debug_target
.to_has_exited (&debug_target
,
4270 pid
, wait_status
, exit_status
);
4272 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4273 pid
, wait_status
, *exit_status
, has_exited
);
4279 debug_to_can_run (struct target_ops
*self
)
4283 retval
= debug_target
.to_can_run (&debug_target
);
4285 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4290 static struct gdbarch
*
4291 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4293 struct gdbarch
*retval
;
4295 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4297 fprintf_unfiltered (gdb_stdlog
,
4298 "target_thread_architecture (%s) = %s [%s]\n",
4299 target_pid_to_str (ptid
),
4300 host_address_to_string (retval
),
4301 gdbarch_bfd_arch_info (retval
)->printable_name
);
4306 debug_to_stop (struct target_ops
*self
, ptid_t ptid
)
4308 debug_target
.to_stop (&debug_target
, ptid
);
4310 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4311 target_pid_to_str (ptid
));
4315 debug_to_rcmd (struct target_ops
*self
, char *command
,
4316 struct ui_file
*outbuf
)
4318 debug_target
.to_rcmd (&debug_target
, command
, outbuf
);
4319 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4323 debug_to_pid_to_exec_file (struct target_ops
*self
, int pid
)
4327 exec_file
= debug_target
.to_pid_to_exec_file (&debug_target
, pid
);
4329 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4336 setup_target_debug (void)
4338 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4340 current_target
.to_open
= debug_to_open
;
4341 current_target
.to_post_attach
= debug_to_post_attach
;
4342 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4343 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4344 current_target
.to_files_info
= debug_to_files_info
;
4345 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4346 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4347 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4348 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4349 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4350 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4351 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4352 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4353 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4354 current_target
.to_watchpoint_addr_within_range
4355 = debug_to_watchpoint_addr_within_range
;
4356 current_target
.to_region_ok_for_hw_watchpoint
4357 = debug_to_region_ok_for_hw_watchpoint
;
4358 current_target
.to_can_accel_watchpoint_condition
4359 = debug_to_can_accel_watchpoint_condition
;
4360 current_target
.to_terminal_init
= debug_to_terminal_init
;
4361 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4362 current_target
.to_terminal_ours_for_output
4363 = debug_to_terminal_ours_for_output
;
4364 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4365 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4366 current_target
.to_terminal_info
= debug_to_terminal_info
;
4367 current_target
.to_load
= debug_to_load
;
4368 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4369 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4370 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4371 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4372 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4373 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4374 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4375 current_target
.to_has_exited
= debug_to_has_exited
;
4376 current_target
.to_can_run
= debug_to_can_run
;
4377 current_target
.to_stop
= debug_to_stop
;
4378 current_target
.to_rcmd
= debug_to_rcmd
;
4379 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4380 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4384 static char targ_desc
[] =
4385 "Names of targets and files being debugged.\nShows the entire \
4386 stack of targets currently in use (including the exec-file,\n\
4387 core-file, and process, if any), as well as the symbol file name.";
4390 default_rcmd (struct target_ops
*self
, char *command
, struct ui_file
*output
)
4392 error (_("\"monitor\" command not supported by this target."));
4396 do_monitor_command (char *cmd
,
4399 target_rcmd (cmd
, gdb_stdtarg
);
4402 /* Print the name of each layers of our target stack. */
4405 maintenance_print_target_stack (char *cmd
, int from_tty
)
4407 struct target_ops
*t
;
4409 printf_filtered (_("The current target stack is:\n"));
4411 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4413 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4417 /* Controls if async mode is permitted. */
4418 int target_async_permitted
= 0;
4420 /* The set command writes to this variable. If the inferior is
4421 executing, target_async_permitted is *not* updated. */
4422 static int target_async_permitted_1
= 0;
4425 set_target_async_command (char *args
, int from_tty
,
4426 struct cmd_list_element
*c
)
4428 if (have_live_inferiors ())
4430 target_async_permitted_1
= target_async_permitted
;
4431 error (_("Cannot change this setting while the inferior is running."));
4434 target_async_permitted
= target_async_permitted_1
;
4438 show_target_async_command (struct ui_file
*file
, int from_tty
,
4439 struct cmd_list_element
*c
,
4442 fprintf_filtered (file
,
4443 _("Controlling the inferior in "
4444 "asynchronous mode is %s.\n"), value
);
4447 /* Temporary copies of permission settings. */
4449 static int may_write_registers_1
= 1;
4450 static int may_write_memory_1
= 1;
4451 static int may_insert_breakpoints_1
= 1;
4452 static int may_insert_tracepoints_1
= 1;
4453 static int may_insert_fast_tracepoints_1
= 1;
4454 static int may_stop_1
= 1;
4456 /* Make the user-set values match the real values again. */
4459 update_target_permissions (void)
4461 may_write_registers_1
= may_write_registers
;
4462 may_write_memory_1
= may_write_memory
;
4463 may_insert_breakpoints_1
= may_insert_breakpoints
;
4464 may_insert_tracepoints_1
= may_insert_tracepoints
;
4465 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4466 may_stop_1
= may_stop
;
4469 /* The one function handles (most of) the permission flags in the same
4473 set_target_permissions (char *args
, int from_tty
,
4474 struct cmd_list_element
*c
)
4476 if (target_has_execution
)
4478 update_target_permissions ();
4479 error (_("Cannot change this setting while the inferior is running."));
4482 /* Make the real values match the user-changed values. */
4483 may_write_registers
= may_write_registers_1
;
4484 may_insert_breakpoints
= may_insert_breakpoints_1
;
4485 may_insert_tracepoints
= may_insert_tracepoints_1
;
4486 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4487 may_stop
= may_stop_1
;
4488 update_observer_mode ();
4491 /* Set memory write permission independently of observer mode. */
4494 set_write_memory_permission (char *args
, int from_tty
,
4495 struct cmd_list_element
*c
)
4497 /* Make the real values match the user-changed values. */
4498 may_write_memory
= may_write_memory_1
;
4499 update_observer_mode ();
4504 initialize_targets (void)
4506 init_dummy_target ();
4507 push_target (&dummy_target
);
4509 add_info ("target", target_info
, targ_desc
);
4510 add_info ("files", target_info
, targ_desc
);
4512 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
4513 Set target debugging."), _("\
4514 Show target debugging."), _("\
4515 When non-zero, target debugging is enabled. Higher numbers are more\n\
4516 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4520 &setdebuglist
, &showdebuglist
);
4522 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
4523 &trust_readonly
, _("\
4524 Set mode for reading from readonly sections."), _("\
4525 Show mode for reading from readonly sections."), _("\
4526 When this mode is on, memory reads from readonly sections (such as .text)\n\
4527 will be read from the object file instead of from the target. This will\n\
4528 result in significant performance improvement for remote targets."),
4530 show_trust_readonly
,
4531 &setlist
, &showlist
);
4533 add_com ("monitor", class_obscure
, do_monitor_command
,
4534 _("Send a command to the remote monitor (remote targets only)."));
4536 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
4537 _("Print the name of each layer of the internal target stack."),
4538 &maintenanceprintlist
);
4540 add_setshow_boolean_cmd ("target-async", no_class
,
4541 &target_async_permitted_1
, _("\
4542 Set whether gdb controls the inferior in asynchronous mode."), _("\
4543 Show whether gdb controls the inferior in asynchronous mode."), _("\
4544 Tells gdb whether to control the inferior in asynchronous mode."),
4545 set_target_async_command
,
4546 show_target_async_command
,
4550 add_setshow_boolean_cmd ("may-write-registers", class_support
,
4551 &may_write_registers_1
, _("\
4552 Set permission to write into registers."), _("\
4553 Show permission to write into registers."), _("\
4554 When this permission is on, GDB may write into the target's registers.\n\
4555 Otherwise, any sort of write attempt will result in an error."),
4556 set_target_permissions
, NULL
,
4557 &setlist
, &showlist
);
4559 add_setshow_boolean_cmd ("may-write-memory", class_support
,
4560 &may_write_memory_1
, _("\
4561 Set permission to write into target memory."), _("\
4562 Show permission to write into target memory."), _("\
4563 When this permission is on, GDB may write into the target's memory.\n\
4564 Otherwise, any sort of write attempt will result in an error."),
4565 set_write_memory_permission
, NULL
,
4566 &setlist
, &showlist
);
4568 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
4569 &may_insert_breakpoints_1
, _("\
4570 Set permission to insert breakpoints in the target."), _("\
4571 Show permission to insert breakpoints in the target."), _("\
4572 When this permission is on, GDB may insert breakpoints in the program.\n\
4573 Otherwise, any sort of insertion attempt will result in an error."),
4574 set_target_permissions
, NULL
,
4575 &setlist
, &showlist
);
4577 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
4578 &may_insert_tracepoints_1
, _("\
4579 Set permission to insert tracepoints in the target."), _("\
4580 Show permission to insert tracepoints in the target."), _("\
4581 When this permission is on, GDB may insert tracepoints in the program.\n\
4582 Otherwise, any sort of insertion attempt will result in an error."),
4583 set_target_permissions
, NULL
,
4584 &setlist
, &showlist
);
4586 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
4587 &may_insert_fast_tracepoints_1
, _("\
4588 Set permission to insert fast tracepoints in the target."), _("\
4589 Show permission to insert fast tracepoints in the target."), _("\
4590 When this permission is on, GDB may insert fast tracepoints.\n\
4591 Otherwise, any sort of insertion attempt will result in an error."),
4592 set_target_permissions
, NULL
,
4593 &setlist
, &showlist
);
4595 add_setshow_boolean_cmd ("may-interrupt", class_support
,
4597 Set permission to interrupt or signal the target."), _("\
4598 Show permission to interrupt or signal the target."), _("\
4599 When this permission is on, GDB may interrupt/stop the target's execution.\n\
4600 Otherwise, any attempt to interrupt or stop will be ignored."),
4601 set_target_permissions
, NULL
,
4602 &setlist
, &showlist
);