1 /* Select target systems and architectures at runtime for GDB.
3 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
4 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
6 Contributed by Cygnus Support.
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330,
23 Boston, MA 02111-1307, USA. */
27 #include "gdb_string.h"
39 #include "gdb_assert.h"
42 static void target_info (char *, int);
44 static void maybe_kill_then_attach (char *, int);
46 static void kill_or_be_killed (int);
48 static void default_terminal_info (char *, int);
50 static int default_region_size_ok_for_hw_watchpoint (int);
52 static int nosymbol (char *, CORE_ADDR
*);
54 static void tcomplain (void);
56 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
58 static int return_zero (void);
60 static int return_one (void);
62 static int return_minus_one (void);
64 void target_ignore (void);
66 static void target_command (char *, int);
68 static struct target_ops
*find_default_run_target (char *);
70 static void nosupport_runtime (void);
72 static LONGEST
default_xfer_partial (struct target_ops
*ops
,
73 enum target_object object
,
74 const char *annex
, void *readbuf
,
76 ULONGEST offset
, LONGEST len
);
78 /* Transfer LEN bytes between target address MEMADDR and GDB address
79 MYADDR. Returns 0 for success, errno code for failure (which
80 includes partial transfers -- if you want a more useful response to
81 partial transfers, try either target_read_memory_partial or
82 target_write_memory_partial). */
84 static int target_xfer_memory (CORE_ADDR memaddr
, char *myaddr
, int len
,
87 static void init_dummy_target (void);
89 static struct target_ops debug_target
;
91 static void debug_to_open (char *, int);
93 static void debug_to_close (int);
95 static void debug_to_attach (char *, int);
97 static void debug_to_detach (char *, int);
99 static void debug_to_disconnect (char *, int);
101 static void debug_to_resume (ptid_t
, int, enum target_signal
);
103 static ptid_t
debug_to_wait (ptid_t
, struct target_waitstatus
*);
105 static void debug_to_fetch_registers (int);
107 static void debug_to_store_registers (int);
109 static void debug_to_prepare_to_store (void);
111 static int deprecated_debug_xfer_memory (CORE_ADDR
, char *, int, int,
113 struct target_ops
*);
115 static void debug_to_files_info (struct target_ops
*);
117 static int debug_to_insert_breakpoint (CORE_ADDR
, char *);
119 static int debug_to_remove_breakpoint (CORE_ADDR
, char *);
121 static int debug_to_can_use_hw_breakpoint (int, int, int);
123 static int debug_to_insert_hw_breakpoint (CORE_ADDR
, char *);
125 static int debug_to_remove_hw_breakpoint (CORE_ADDR
, char *);
127 static int debug_to_insert_watchpoint (CORE_ADDR
, int, int);
129 static int debug_to_remove_watchpoint (CORE_ADDR
, int, int);
131 static int debug_to_stopped_by_watchpoint (void);
133 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
135 static int debug_to_region_size_ok_for_hw_watchpoint (int);
137 static void debug_to_terminal_init (void);
139 static void debug_to_terminal_inferior (void);
141 static void debug_to_terminal_ours_for_output (void);
143 static void debug_to_terminal_save_ours (void);
145 static void debug_to_terminal_ours (void);
147 static void debug_to_terminal_info (char *, int);
149 static void debug_to_kill (void);
151 static void debug_to_load (char *, int);
153 static int debug_to_lookup_symbol (char *, CORE_ADDR
*);
155 static void debug_to_mourn_inferior (void);
157 static int debug_to_can_run (void);
159 static void debug_to_notice_signals (ptid_t
);
161 static int debug_to_thread_alive (ptid_t
);
163 static void debug_to_stop (void);
165 /* NOTE: cagney/2004-09-29: Many targets reference this variable in
166 wierd and mysterious ways. Putting the variable here lets those
167 wierd and mysterious ways keep building while they are being
168 converted to the inferior inheritance structure. */
169 struct target_ops deprecated_child_ops
;
171 /* Pointer to array of target architecture structures; the size of the
172 array; the current index into the array; the allocated size of the
174 struct target_ops
**target_structs
;
175 unsigned target_struct_size
;
176 unsigned target_struct_index
;
177 unsigned target_struct_allocsize
;
178 #define DEFAULT_ALLOCSIZE 10
180 /* The initial current target, so that there is always a semi-valid
183 static struct target_ops dummy_target
;
185 /* Top of target stack. */
187 static struct target_ops
*target_stack
;
189 /* The target structure we are currently using to talk to a process
190 or file or whatever "inferior" we have. */
192 struct target_ops current_target
;
194 /* Command list for target. */
196 static struct cmd_list_element
*targetlist
= NULL
;
198 /* Nonzero if we are debugging an attached outside process
199 rather than an inferior. */
203 /* Non-zero if we want to see trace of target level stuff. */
205 static int targetdebug
= 0;
207 show_targetdebug (struct ui_file
*file
, int from_tty
,
208 struct cmd_list_element
*c
, const char *value
)
210 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
213 static void setup_target_debug (void);
215 DCACHE
*target_dcache
;
217 /* The user just typed 'target' without the name of a target. */
220 target_command (char *arg
, int from_tty
)
222 fputs_filtered ("Argument required (target name). Try `help target'\n",
226 /* Add a possible target architecture to the list. */
229 add_target (struct target_ops
*t
)
231 /* Provide default values for all "must have" methods. */
232 if (t
->to_xfer_partial
== NULL
)
233 t
->to_xfer_partial
= default_xfer_partial
;
237 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
238 target_structs
= (struct target_ops
**) xmalloc
239 (target_struct_allocsize
* sizeof (*target_structs
));
241 if (target_struct_size
>= target_struct_allocsize
)
243 target_struct_allocsize
*= 2;
244 target_structs
= (struct target_ops
**)
245 xrealloc ((char *) target_structs
,
246 target_struct_allocsize
* sizeof (*target_structs
));
248 target_structs
[target_struct_size
++] = t
;
250 if (targetlist
== NULL
)
251 add_prefix_cmd ("target", class_run
, target_command
, _("\
252 Connect to a target machine or process.\n\
253 The first argument is the type or protocol of the target machine.\n\
254 Remaining arguments are interpreted by the target protocol. For more\n\
255 information on the arguments for a particular protocol, type\n\
256 `help target ' followed by the protocol name."),
257 &targetlist
, "target ", 0, &cmdlist
);
258 add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
269 target_load (char *arg
, int from_tty
)
271 dcache_invalidate (target_dcache
);
272 (*current_target
.to_load
) (arg
, from_tty
);
276 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
277 struct target_ops
*t
)
279 errno
= EIO
; /* Can't read/write this location */
280 return 0; /* No bytes handled */
286 error (_("You can't do that when your target is `%s'"),
287 current_target
.to_shortname
);
293 error (_("You can't do that without a process to debug."));
297 nosymbol (char *name
, CORE_ADDR
*addrp
)
299 return 1; /* Symbol does not exist in target env */
303 nosupport_runtime (void)
305 if (ptid_equal (inferior_ptid
, null_ptid
))
308 error (_("No run-time support for this"));
313 default_terminal_info (char *args
, int from_tty
)
315 printf_unfiltered (_("No saved terminal information.\n"));
318 /* This is the default target_create_inferior and target_attach function.
319 If the current target is executing, it asks whether to kill it off.
320 If this function returns without calling error(), it has killed off
321 the target, and the operation should be attempted. */
324 kill_or_be_killed (int from_tty
)
326 if (target_has_execution
)
328 printf_unfiltered (_("You are already running a program:\n"));
329 target_files_info ();
330 if (query ("Kill it? "))
333 if (target_has_execution
)
334 error (_("Killing the program did not help."));
339 error (_("Program not killed."));
346 maybe_kill_then_attach (char *args
, int from_tty
)
348 kill_or_be_killed (from_tty
);
349 target_attach (args
, from_tty
);
353 maybe_kill_then_create_inferior (char *exec
, char *args
, char **env
,
356 kill_or_be_killed (0);
357 target_create_inferior (exec
, args
, env
, from_tty
);
360 /* Go through the target stack from top to bottom, copying over zero
361 entries in current_target, then filling in still empty entries. In
362 effect, we are doing class inheritance through the pushed target
365 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
366 is currently implemented, is that it discards any knowledge of
367 which target an inherited method originally belonged to.
368 Consequently, new new target methods should instead explicitly and
369 locally search the target stack for the target that can handle the
373 update_current_target (void)
375 struct target_ops
*t
;
377 /* First, reset curren'ts contents. */
378 memset (¤t_target
, 0, sizeof (current_target
));
380 #define INHERIT(FIELD, TARGET) \
381 if (!current_target.FIELD) \
382 current_target.FIELD = (TARGET)->FIELD
384 for (t
= target_stack
; t
; t
= t
->beneath
)
386 INHERIT (to_shortname
, t
);
387 INHERIT (to_longname
, t
);
389 INHERIT (to_open
, t
);
390 INHERIT (to_close
, t
);
391 INHERIT (to_attach
, t
);
392 INHERIT (to_post_attach
, t
);
393 INHERIT (to_detach
, t
);
394 INHERIT (to_disconnect
, t
);
395 INHERIT (to_resume
, t
);
396 INHERIT (to_wait
, t
);
397 INHERIT (to_fetch_registers
, t
);
398 INHERIT (to_store_registers
, t
);
399 INHERIT (to_prepare_to_store
, t
);
400 INHERIT (deprecated_xfer_memory
, t
);
401 INHERIT (to_files_info
, t
);
402 INHERIT (to_insert_breakpoint
, t
);
403 INHERIT (to_remove_breakpoint
, t
);
404 INHERIT (to_can_use_hw_breakpoint
, t
);
405 INHERIT (to_insert_hw_breakpoint
, t
);
406 INHERIT (to_remove_hw_breakpoint
, t
);
407 INHERIT (to_insert_watchpoint
, t
);
408 INHERIT (to_remove_watchpoint
, t
);
409 INHERIT (to_stopped_data_address
, t
);
410 INHERIT (to_stopped_by_watchpoint
, t
);
411 INHERIT (to_have_continuable_watchpoint
, t
);
412 INHERIT (to_region_size_ok_for_hw_watchpoint
, t
);
413 INHERIT (to_terminal_init
, t
);
414 INHERIT (to_terminal_inferior
, t
);
415 INHERIT (to_terminal_ours_for_output
, t
);
416 INHERIT (to_terminal_ours
, t
);
417 INHERIT (to_terminal_save_ours
, t
);
418 INHERIT (to_terminal_info
, t
);
419 INHERIT (to_kill
, t
);
420 INHERIT (to_load
, t
);
421 INHERIT (to_lookup_symbol
, t
);
422 INHERIT (to_create_inferior
, t
);
423 INHERIT (to_post_startup_inferior
, t
);
424 INHERIT (to_acknowledge_created_inferior
, t
);
425 INHERIT (to_insert_fork_catchpoint
, t
);
426 INHERIT (to_remove_fork_catchpoint
, t
);
427 INHERIT (to_insert_vfork_catchpoint
, t
);
428 INHERIT (to_remove_vfork_catchpoint
, t
);
429 INHERIT (to_follow_fork
, t
);
430 INHERIT (to_insert_exec_catchpoint
, t
);
431 INHERIT (to_remove_exec_catchpoint
, t
);
432 INHERIT (to_reported_exec_events_per_exec_call
, t
);
433 INHERIT (to_has_exited
, t
);
434 INHERIT (to_mourn_inferior
, t
);
435 INHERIT (to_can_run
, t
);
436 INHERIT (to_notice_signals
, t
);
437 INHERIT (to_thread_alive
, t
);
438 INHERIT (to_find_new_threads
, t
);
439 INHERIT (to_pid_to_str
, t
);
440 INHERIT (to_extra_thread_info
, t
);
441 INHERIT (to_stop
, t
);
442 /* Do not inherit to_xfer_partial. */
443 INHERIT (to_rcmd
, t
);
444 INHERIT (to_enable_exception_callback
, t
);
445 INHERIT (to_get_current_exception_event
, t
);
446 INHERIT (to_pid_to_exec_file
, t
);
447 INHERIT (to_stratum
, t
);
448 INHERIT (to_has_all_memory
, t
);
449 INHERIT (to_has_memory
, t
);
450 INHERIT (to_has_stack
, t
);
451 INHERIT (to_has_registers
, t
);
452 INHERIT (to_has_execution
, t
);
453 INHERIT (to_has_thread_control
, t
);
454 INHERIT (to_sections
, t
);
455 INHERIT (to_sections_end
, t
);
456 INHERIT (to_can_async_p
, t
);
457 INHERIT (to_is_async_p
, t
);
458 INHERIT (to_async
, t
);
459 INHERIT (to_async_mask_value
, t
);
460 INHERIT (to_find_memory_regions
, t
);
461 INHERIT (to_make_corefile_notes
, t
);
462 INHERIT (to_get_thread_local_address
, t
);
463 INHERIT (to_magic
, t
);
467 /* Clean up a target struct so it no longer has any zero pointers in
468 it. Some entries are defaulted to a method that print an error,
469 others are hard-wired to a standard recursive default. */
471 #define de_fault(field, value) \
472 if (!current_target.field) \
473 current_target.field = value
476 (void (*) (char *, int))
482 maybe_kill_then_attach
);
483 de_fault (to_post_attach
,
487 (void (*) (char *, int))
489 de_fault (to_disconnect
,
490 (void (*) (char *, int))
493 (void (*) (ptid_t
, int, enum target_signal
))
496 (ptid_t (*) (ptid_t
, struct target_waitstatus
*))
498 de_fault (to_fetch_registers
,
501 de_fault (to_store_registers
,
504 de_fault (to_prepare_to_store
,
507 de_fault (deprecated_xfer_memory
,
508 (int (*) (CORE_ADDR
, char *, int, int, struct mem_attrib
*, struct target_ops
*))
510 de_fault (to_files_info
,
511 (void (*) (struct target_ops
*))
513 de_fault (to_insert_breakpoint
,
514 memory_insert_breakpoint
);
515 de_fault (to_remove_breakpoint
,
516 memory_remove_breakpoint
);
517 de_fault (to_can_use_hw_breakpoint
,
518 (int (*) (int, int, int))
520 de_fault (to_insert_hw_breakpoint
,
521 (int (*) (CORE_ADDR
, char *))
523 de_fault (to_remove_hw_breakpoint
,
524 (int (*) (CORE_ADDR
, char *))
526 de_fault (to_insert_watchpoint
,
527 (int (*) (CORE_ADDR
, int, int))
529 de_fault (to_remove_watchpoint
,
530 (int (*) (CORE_ADDR
, int, int))
532 de_fault (to_stopped_by_watchpoint
,
535 de_fault (to_stopped_data_address
,
536 (int (*) (struct target_ops
*, CORE_ADDR
*))
538 de_fault (to_region_size_ok_for_hw_watchpoint
,
539 default_region_size_ok_for_hw_watchpoint
);
540 de_fault (to_terminal_init
,
543 de_fault (to_terminal_inferior
,
546 de_fault (to_terminal_ours_for_output
,
549 de_fault (to_terminal_ours
,
552 de_fault (to_terminal_save_ours
,
555 de_fault (to_terminal_info
,
556 default_terminal_info
);
561 (void (*) (char *, int))
563 de_fault (to_lookup_symbol
,
564 (int (*) (char *, CORE_ADDR
*))
566 de_fault (to_create_inferior
,
567 maybe_kill_then_create_inferior
);
568 de_fault (to_post_startup_inferior
,
571 de_fault (to_acknowledge_created_inferior
,
574 de_fault (to_insert_fork_catchpoint
,
577 de_fault (to_remove_fork_catchpoint
,
580 de_fault (to_insert_vfork_catchpoint
,
583 de_fault (to_remove_vfork_catchpoint
,
586 de_fault (to_follow_fork
,
589 de_fault (to_insert_exec_catchpoint
,
592 de_fault (to_remove_exec_catchpoint
,
595 de_fault (to_reported_exec_events_per_exec_call
,
598 de_fault (to_has_exited
,
599 (int (*) (int, int, int *))
601 de_fault (to_mourn_inferior
,
604 de_fault (to_can_run
,
606 de_fault (to_notice_signals
,
609 de_fault (to_thread_alive
,
612 de_fault (to_find_new_threads
,
615 de_fault (to_extra_thread_info
,
616 (char *(*) (struct thread_info
*))
621 current_target
.to_xfer_partial
= default_xfer_partial
;
623 (void (*) (char *, struct ui_file
*))
625 de_fault (to_enable_exception_callback
,
626 (struct symtab_and_line
* (*) (enum exception_event_kind
, int))
628 de_fault (to_get_current_exception_event
,
629 (struct exception_event_record
* (*) (void))
631 de_fault (to_pid_to_exec_file
,
634 de_fault (to_can_async_p
,
637 de_fault (to_is_async_p
,
641 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
645 /* Finally, position the target-stack beneath the squashed
646 "current_target". That way code looking for a non-inherited
647 target method can quickly and simply find it. */
648 current_target
.beneath
= target_stack
;
651 /* Push a new target type into the stack of the existing target accessors,
652 possibly superseding some of the existing accessors.
654 Result is zero if the pushed target ended up on top of the stack,
655 nonzero if at least one target is on top of it.
657 Rather than allow an empty stack, we always have the dummy target at
658 the bottom stratum, so we can call the function vectors without
662 push_target (struct target_ops
*t
)
664 struct target_ops
**cur
;
666 /* Check magic number. If wrong, it probably means someone changed
667 the struct definition, but not all the places that initialize one. */
668 if (t
->to_magic
!= OPS_MAGIC
)
670 fprintf_unfiltered (gdb_stderr
,
671 "Magic number of %s target struct wrong\n",
673 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
676 /* Find the proper stratum to install this target in. */
677 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
679 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
683 /* If there's already targets at this stratum, remove them. */
684 /* FIXME: cagney/2003-10-15: I think this should be poping all
685 targets to CUR, and not just those at this stratum level. */
686 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
688 /* There's already something at this stratum level. Close it,
689 and un-hook it from the stack. */
690 struct target_ops
*tmp
= (*cur
);
691 (*cur
) = (*cur
)->beneath
;
693 target_close (tmp
, 0);
696 /* We have removed all targets in our stratum, now add the new one. */
700 update_current_target ();
703 setup_target_debug ();
706 return (t
!= target_stack
);
709 /* Remove a target_ops vector from the stack, wherever it may be.
710 Return how many times it was removed (0 or 1). */
713 unpush_target (struct target_ops
*t
)
715 struct target_ops
**cur
;
716 struct target_ops
*tmp
;
718 /* Look for the specified target. Note that we assume that a target
719 can only occur once in the target stack. */
721 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
728 return 0; /* Didn't find target_ops, quit now */
730 /* NOTE: cagney/2003-12-06: In '94 the close call was made
731 unconditional by moving it to before the above check that the
732 target was in the target stack (something about "Change the way
733 pushing and popping of targets work to support target overlays
734 and inheritance"). This doesn't make much sense - only open
735 targets should be closed. */
738 /* Unchain the target */
740 (*cur
) = (*cur
)->beneath
;
743 update_current_target ();
751 target_close (¤t_target
, 0); /* Let it clean up */
752 if (unpush_target (target_stack
) == 1)
755 fprintf_unfiltered (gdb_stderr
,
756 "pop_target couldn't find target %s\n",
757 current_target
.to_shortname
);
758 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
762 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
764 /* target_read_string -- read a null terminated string, up to LEN bytes,
765 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
766 Set *STRING to a pointer to malloc'd memory containing the data; the caller
767 is responsible for freeing it. Return the number of bytes successfully
771 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
773 int tlen
, origlen
, offset
, i
;
777 int buffer_allocated
;
779 unsigned int nbytes_read
= 0;
781 /* Small for testing. */
782 buffer_allocated
= 4;
783 buffer
= xmalloc (buffer_allocated
);
790 tlen
= MIN (len
, 4 - (memaddr
& 3));
791 offset
= memaddr
& 3;
793 errcode
= target_read_memory (memaddr
& ~3, buf
, 4);
796 /* The transfer request might have crossed the boundary to an
797 unallocated region of memory. Retry the transfer, requesting
801 errcode
= target_read_memory (memaddr
, buf
, 1);
806 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
809 bytes
= bufptr
- buffer
;
810 buffer_allocated
*= 2;
811 buffer
= xrealloc (buffer
, buffer_allocated
);
812 bufptr
= buffer
+ bytes
;
815 for (i
= 0; i
< tlen
; i
++)
817 *bufptr
++ = buf
[i
+ offset
];
818 if (buf
[i
+ offset
] == '\000')
820 nbytes_read
+= i
+ 1;
837 /* Find a section containing ADDR. */
838 struct section_table
*
839 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
841 struct section_table
*secp
;
842 for (secp
= target
->to_sections
;
843 secp
< target
->to_sections_end
;
846 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
852 /* Return non-zero when the target vector has supplied an xfer_partial
853 method and it, rather than xfer_memory, should be used. */
855 target_xfer_partial_p (void)
857 return (target_stack
!= NULL
858 && target_stack
->to_xfer_partial
!= default_xfer_partial
);
862 target_xfer_partial (struct target_ops
*ops
,
863 enum target_object object
, const char *annex
,
864 void *readbuf
, const void *writebuf
,
865 ULONGEST offset
, LONGEST len
)
869 gdb_assert (ops
->to_xfer_partial
!= NULL
);
870 retval
= ops
->to_xfer_partial (ops
, object
, annex
, readbuf
, writebuf
,
874 const unsigned char *myaddr
= NULL
;
876 fprintf_unfiltered (gdb_stdlog
,
877 "%s:target_xfer_partial (%d, %s, 0x%lx, 0x%lx, 0x%s, %s) = %s",
880 (annex
? annex
: "(null)"),
881 (long) readbuf
, (long) writebuf
,
882 paddr_nz (offset
), paddr_d (len
), paddr_d (retval
));
888 if (retval
> 0 && myaddr
!= NULL
)
892 fputs_unfiltered (", bytes =", gdb_stdlog
);
893 for (i
= 0; i
< retval
; i
++)
895 if ((((long) &(myaddr
[i
])) & 0xf) == 0)
897 if (targetdebug
< 2 && i
> 0)
899 fprintf_unfiltered (gdb_stdlog
, " ...");
902 fprintf_unfiltered (gdb_stdlog
, "\n");
905 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
909 fputc_unfiltered ('\n', gdb_stdlog
);
914 /* Attempt a transfer all LEN bytes starting at OFFSET between the
915 inferior's KIND:ANNEX space and GDB's READBUF/WRITEBUF buffer. If
916 the transfer succeeds, return zero, otherwize the host ERRNO is
919 The inferior is formed from several layers. In the case of
920 corefiles, inf-corefile is layered above inf-exec and a request for
921 text (corefiles do not include text pages) will be first sent to
922 the core-stratum, fail, and then sent to the object-file where it
925 NOTE: cagney/2004-09-30:
927 The old code tried to use four separate mechanisms for mapping an
928 object:offset:len tuple onto an inferior and its address space: the
929 target stack; the inferior's TO_SECTIONS; solib's SO_LIST;
934 The code below is instead using a single mechanism (currently
935 strata). If that mechanism proves insufficient then re-factor it
936 implementing another singluar mechanism (for instance, a generic
937 object:annex onto inferior:object:annex say). */
940 xfer_using_stratum (enum target_object object
, const char *annex
,
941 ULONGEST offset
, LONGEST len
, void *readbuf
,
942 const void *writebuf
)
945 struct target_ops
*target
;
947 /* Always successful. */
950 /* Never successful. */
951 if (target_stack
== NULL
)
954 target
= target_stack
;
957 xfered
= target_xfer_partial (target
, object
, annex
,
958 readbuf
, writebuf
, offset
, len
);
961 /* The partial xfer succeeded, update the counts, check that
962 the xfer hasn't finished and if it hasn't set things up
963 for the next round. */
969 readbuf
= (bfd_byte
*) readbuf
+ xfered
;
970 if (writebuf
!= NULL
)
971 writebuf
= (bfd_byte
*) writebuf
+ xfered
;
972 target
= target_stack
;
976 /* Something totally screwed up, abandon the attempt to
985 /* This "stratum" didn't work, try the next one down. */
986 target
= target
->beneath
;
993 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
994 GDB's memory at MYADDR. Returns either 0 for success or an errno value
997 If an error occurs, no guarantee is made about the contents of the data at
998 MYADDR. In particular, the caller should not depend upon partial reads
999 filling the buffer with good data. There is no way for the caller to know
1000 how much good data might have been transfered anyway. Callers that can
1001 deal with partial reads should call target_read_memory_partial. */
1004 target_read_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
)
1006 if (target_xfer_partial_p ())
1007 return xfer_using_stratum (TARGET_OBJECT_MEMORY
, NULL
,
1008 memaddr
, len
, myaddr
, NULL
);
1010 return target_xfer_memory (memaddr
, myaddr
, len
, 0);
1014 target_write_memory (CORE_ADDR memaddr
, const bfd_byte
*myaddr
, int len
)
1016 bfd_byte
*bytes
= alloca (len
);
1017 memcpy (bytes
, myaddr
, len
);
1018 if (target_xfer_partial_p ())
1019 return xfer_using_stratum (TARGET_OBJECT_MEMORY
, NULL
,
1020 memaddr
, len
, NULL
, bytes
);
1022 return target_xfer_memory (memaddr
, bytes
, len
, 1);
1025 #ifndef target_stopped_data_address_p
1027 target_stopped_data_address_p (struct target_ops
*target
)
1029 if (target
->to_stopped_data_address
1030 == (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
)
1032 if (target
->to_stopped_data_address
== debug_to_stopped_data_address
1033 && (debug_target
.to_stopped_data_address
1034 == (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
))
1040 static int trust_readonly
= 0;
1042 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1043 struct cmd_list_element
*c
, const char *value
)
1045 fprintf_filtered (file
, _("\
1046 Mode for reading from readonly sections is %s.\n"),
1050 /* Move memory to or from the targets. The top target gets priority;
1051 if it cannot handle it, it is offered to the next one down, etc.
1053 Result is -1 on error, or the number of bytes transfered. */
1056 do_xfer_memory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
1057 struct mem_attrib
*attrib
)
1061 struct target_ops
*t
;
1063 /* Zero length requests are ok and require no work. */
1067 /* deprecated_xfer_memory is not guaranteed to set errno, even when
1071 if (!write
&& trust_readonly
)
1073 struct section_table
*secp
;
1074 /* User-settable option, "trust-readonly-sections". If true,
1075 then memory from any SEC_READONLY bfd section may be read
1076 directly from the bfd file. */
1077 secp
= target_section_by_addr (¤t_target
, memaddr
);
1079 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1081 return xfer_memory (memaddr
, myaddr
, len
, 0, attrib
, ¤t_target
);
1084 /* The quick case is that the top target can handle the transfer. */
1085 res
= current_target
.deprecated_xfer_memory
1086 (memaddr
, myaddr
, len
, write
, attrib
, ¤t_target
);
1088 /* If res <= 0 then we call it again in the loop. Ah well. */
1091 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
1093 if (!t
->to_has_memory
)
1096 res
= t
->deprecated_xfer_memory (memaddr
, myaddr
, len
, write
, attrib
, t
);
1098 break; /* Handled all or part of xfer */
1099 if (t
->to_has_all_memory
)
1111 /* Perform a memory transfer. Iterate until the entire region has
1114 Result is 0 or errno value. */
1117 target_xfer_memory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
)
1121 struct mem_region
*region
;
1123 /* Zero length requests are ok and require no work. */
1131 region
= lookup_mem_region(memaddr
);
1132 if (memaddr
+ len
< region
->hi
)
1135 reg_len
= region
->hi
- memaddr
;
1137 switch (region
->attrib
.mode
)
1152 if (region
->attrib
.cache
)
1153 res
= dcache_xfer_memory (target_dcache
, memaddr
, myaddr
,
1156 res
= do_xfer_memory (memaddr
, myaddr
, reg_len
, write
,
1161 /* If this address is for nonexistent memory, read zeros
1162 if reading, or do nothing if writing. Return
1165 memset (myaddr
, 0, len
);
1179 return 0; /* We managed to cover it all somehow. */
1183 /* Perform a partial memory transfer.
1185 Result is -1 on error, or the number of bytes transfered. */
1188 target_xfer_memory_partial (CORE_ADDR memaddr
, char *myaddr
, int len
,
1189 int write_p
, int *err
)
1193 struct mem_region
*region
;
1195 /* Zero length requests are ok and require no work. */
1202 region
= lookup_mem_region(memaddr
);
1203 if (memaddr
+ len
< region
->hi
)
1206 reg_len
= region
->hi
- memaddr
;
1208 switch (region
->attrib
.mode
)
1227 if (region
->attrib
.cache
)
1228 res
= dcache_xfer_memory (target_dcache
, memaddr
, myaddr
,
1231 res
= do_xfer_memory (memaddr
, myaddr
, reg_len
, write_p
,
1249 target_read_memory_partial (CORE_ADDR memaddr
, char *buf
, int len
, int *err
)
1251 if (target_xfer_partial_p ())
1252 return target_xfer_partial (target_stack
, TARGET_OBJECT_MEMORY
, NULL
,
1253 buf
, NULL
, memaddr
, len
);
1255 return target_xfer_memory_partial (memaddr
, buf
, len
, 0, err
);
1259 target_write_memory_partial (CORE_ADDR memaddr
, char *buf
, int len
, int *err
)
1261 if (target_xfer_partial_p ())
1262 return target_xfer_partial (target_stack
, TARGET_OBJECT_MEMORY
, NULL
,
1263 NULL
, buf
, memaddr
, len
);
1265 return target_xfer_memory_partial (memaddr
, buf
, len
, 1, err
);
1268 /* More generic transfers. */
1271 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1272 const char *annex
, void *readbuf
,
1273 const void *writebuf
, ULONGEST offset
, LONGEST len
)
1275 if (object
== TARGET_OBJECT_MEMORY
1276 && ops
->deprecated_xfer_memory
!= NULL
)
1277 /* If available, fall back to the target's
1278 "deprecated_xfer_memory" method. */
1282 if (writebuf
!= NULL
)
1284 void *buffer
= xmalloc (len
);
1285 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1286 memcpy (buffer
, writebuf
, len
);
1287 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1288 1/*write*/, NULL
, ops
);
1289 do_cleanups (cleanup
);
1291 if (readbuf
!= NULL
)
1292 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
, 0/*read*/,
1296 else if (xfered
== 0 && errno
== 0)
1297 /* "deprecated_xfer_memory" uses 0, cross checked against
1298 ERRNO as one indication of an error. */
1303 else if (ops
->beneath
!= NULL
)
1304 return target_xfer_partial (ops
->beneath
, object
, annex
,
1305 readbuf
, writebuf
, offset
, len
);
1310 /* Target vector read/write partial wrapper functions.
1312 NOTE: cagney/2003-10-21: I wonder if having "to_xfer_partial
1313 (inbuf, outbuf)", instead of separate read/write methods, make life
1317 target_read_partial (struct target_ops
*ops
,
1318 enum target_object object
,
1319 const char *annex
, void *buf
,
1320 ULONGEST offset
, LONGEST len
)
1322 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
1326 target_write_partial (struct target_ops
*ops
,
1327 enum target_object object
,
1328 const char *annex
, const void *buf
,
1329 ULONGEST offset
, LONGEST len
)
1331 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
1334 /* Wrappers to perform the full transfer. */
1336 target_read (struct target_ops
*ops
,
1337 enum target_object object
,
1338 const char *annex
, void *buf
,
1339 ULONGEST offset
, LONGEST len
)
1342 while (xfered
< len
)
1344 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
1345 (bfd_byte
*) buf
+ xfered
,
1346 offset
+ xfered
, len
- xfered
);
1347 /* Call an observer, notifying them of the xfer progress? */
1349 /* Call memory_error? */
1358 target_write (struct target_ops
*ops
,
1359 enum target_object object
,
1360 const char *annex
, const void *buf
,
1361 ULONGEST offset
, LONGEST len
)
1364 while (xfered
< len
)
1366 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
1367 (bfd_byte
*) buf
+ xfered
,
1368 offset
+ xfered
, len
- xfered
);
1369 /* Call an observer, notifying them of the xfer progress? */
1371 /* Call memory_error? */
1379 /* Memory transfer methods. */
1382 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, void *buf
,
1385 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
, buf
, addr
, len
)
1387 memory_error (EIO
, addr
);
1391 get_target_memory_unsigned (struct target_ops
*ops
,
1392 CORE_ADDR addr
, int len
)
1394 char buf
[sizeof (ULONGEST
)];
1396 gdb_assert (len
<= sizeof (buf
));
1397 get_target_memory (ops
, addr
, buf
, len
);
1398 return extract_unsigned_integer (buf
, len
);
1402 target_info (char *args
, int from_tty
)
1404 struct target_ops
*t
;
1405 int has_all_mem
= 0;
1407 if (symfile_objfile
!= NULL
)
1408 printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile
->name
);
1410 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
1412 if (!t
->to_has_memory
)
1415 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
1418 printf_unfiltered (_("\tWhile running this, GDB does not access memory from...\n"));
1419 printf_unfiltered ("%s:\n", t
->to_longname
);
1420 (t
->to_files_info
) (t
);
1421 has_all_mem
= t
->to_has_all_memory
;
1425 /* This is to be called by the open routine before it does
1429 target_preopen (int from_tty
)
1433 if (target_has_execution
)
1436 || query (_("A program is being debugged already. Kill it? ")))
1439 error (_("Program not killed."));
1442 /* Calling target_kill may remove the target from the stack. But if
1443 it doesn't (which seems like a win for UDI), remove it now. */
1445 if (target_has_execution
)
1449 /* Detach a target after doing deferred register stores. */
1452 target_detach (char *args
, int from_tty
)
1454 (current_target
.to_detach
) (args
, from_tty
);
1458 target_disconnect (char *args
, int from_tty
)
1460 (current_target
.to_disconnect
) (args
, from_tty
);
1464 target_link (char *modname
, CORE_ADDR
*t_reloc
)
1466 if (DEPRECATED_STREQ (current_target
.to_shortname
, "rombug"))
1468 (current_target
.to_lookup_symbol
) (modname
, t_reloc
);
1470 error (_("Unable to link to %s and get relocation in rombug"), modname
);
1473 *t_reloc
= (CORE_ADDR
) -1;
1477 target_async_mask (int mask
)
1479 int saved_async_masked_status
= target_async_mask_value
;
1480 target_async_mask_value
= mask
;
1481 return saved_async_masked_status
;
1484 /* Look through the list of possible targets for a target that can
1485 execute a run or attach command without any other data. This is
1486 used to locate the default process stratum.
1488 Result is always valid (error() is called for errors). */
1490 static struct target_ops
*
1491 find_default_run_target (char *do_mesg
)
1493 struct target_ops
**t
;
1494 struct target_ops
*runable
= NULL
;
1499 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
1502 if ((*t
)->to_can_run
&& target_can_run (*t
))
1510 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
1516 find_default_attach (char *args
, int from_tty
)
1518 struct target_ops
*t
;
1520 t
= find_default_run_target ("attach");
1521 (t
->to_attach
) (args
, from_tty
);
1526 find_default_create_inferior (char *exec_file
, char *allargs
, char **env
,
1529 struct target_ops
*t
;
1531 t
= find_default_run_target ("run");
1532 (t
->to_create_inferior
) (exec_file
, allargs
, env
, from_tty
);
1537 default_region_size_ok_for_hw_watchpoint (int byte_count
)
1539 return (byte_count
<= TYPE_LENGTH (builtin_type_void_data_ptr
));
1555 return_minus_one (void)
1561 * Resize the to_sections pointer. Also make sure that anyone that
1562 * was holding on to an old value of it gets updated.
1563 * Returns the old size.
1567 target_resize_to_sections (struct target_ops
*target
, int num_added
)
1569 struct target_ops
**t
;
1570 struct section_table
*old_value
;
1573 old_value
= target
->to_sections
;
1575 if (target
->to_sections
)
1577 old_count
= target
->to_sections_end
- target
->to_sections
;
1578 target
->to_sections
= (struct section_table
*)
1579 xrealloc ((char *) target
->to_sections
,
1580 (sizeof (struct section_table
)) * (num_added
+ old_count
));
1585 target
->to_sections
= (struct section_table
*)
1586 xmalloc ((sizeof (struct section_table
)) * num_added
);
1588 target
->to_sections_end
= target
->to_sections
+ (num_added
+ old_count
);
1590 /* Check to see if anyone else was pointing to this structure.
1591 If old_value was null, then no one was. */
1595 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
1598 if ((*t
)->to_sections
== old_value
)
1600 (*t
)->to_sections
= target
->to_sections
;
1601 (*t
)->to_sections_end
= target
->to_sections_end
;
1604 /* There is a flattened view of the target stack in current_target,
1605 so its to_sections pointer might also need updating. */
1606 if (current_target
.to_sections
== old_value
)
1608 current_target
.to_sections
= target
->to_sections
;
1609 current_target
.to_sections_end
= target
->to_sections_end
;
1617 /* Remove all target sections taken from ABFD.
1619 Scan the current target stack for targets whose section tables
1620 refer to sections from BFD, and remove those sections. We use this
1621 when we notice that the inferior has unloaded a shared object, for
1624 remove_target_sections (bfd
*abfd
)
1626 struct target_ops
**t
;
1628 for (t
= target_structs
; t
< target_structs
+ target_struct_size
; t
++)
1630 struct section_table
*src
, *dest
;
1632 dest
= (*t
)->to_sections
;
1633 for (src
= (*t
)->to_sections
; src
< (*t
)->to_sections_end
; src
++)
1634 if (src
->bfd
!= abfd
)
1636 /* Keep this section. */
1637 if (dest
< src
) *dest
= *src
;
1641 /* If we've dropped any sections, resize the section table. */
1643 target_resize_to_sections (*t
, dest
- src
);
1650 /* Find a single runnable target in the stack and return it. If for
1651 some reason there is more than one, return NULL. */
1654 find_run_target (void)
1656 struct target_ops
**t
;
1657 struct target_ops
*runable
= NULL
;
1662 for (t
= target_structs
; t
< target_structs
+ target_struct_size
; ++t
)
1664 if ((*t
)->to_can_run
&& target_can_run (*t
))
1671 return (count
== 1 ? runable
: NULL
);
1674 /* Find a single core_stratum target in the list of targets and return it.
1675 If for some reason there is more than one, return NULL. */
1678 find_core_target (void)
1680 struct target_ops
**t
;
1681 struct target_ops
*runable
= NULL
;
1686 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
1689 if ((*t
)->to_stratum
== core_stratum
)
1696 return (count
== 1 ? runable
: NULL
);
1700 * Find the next target down the stack from the specified target.
1704 find_target_beneath (struct target_ops
*t
)
1710 /* The inferior process has died. Long live the inferior! */
1713 generic_mourn_inferior (void)
1715 extern int show_breakpoint_hit_counts
;
1717 inferior_ptid
= null_ptid
;
1719 breakpoint_init_inferior (inf_exited
);
1720 registers_changed ();
1722 reopen_exec_file ();
1723 reinit_frame_cache ();
1725 /* It is confusing to the user for ignore counts to stick around
1726 from previous runs of the inferior. So clear them. */
1727 /* However, it is more confusing for the ignore counts to disappear when
1728 using hit counts. So don't clear them if we're counting hits. */
1729 if (!show_breakpoint_hit_counts
)
1730 breakpoint_clear_ignore_counts ();
1732 if (deprecated_detach_hook
)
1733 deprecated_detach_hook ();
1736 /* Helper function for child_wait and the Lynx derivatives of child_wait.
1737 HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
1738 translation of that in OURSTATUS. */
1740 store_waitstatus (struct target_waitstatus
*ourstatus
, int hoststatus
)
1742 #ifdef CHILD_SPECIAL_WAITSTATUS
1743 /* CHILD_SPECIAL_WAITSTATUS should return nonzero and set *OURSTATUS
1744 if it wants to deal with hoststatus. */
1745 if (CHILD_SPECIAL_WAITSTATUS (ourstatus
, hoststatus
))
1749 if (WIFEXITED (hoststatus
))
1751 ourstatus
->kind
= TARGET_WAITKIND_EXITED
;
1752 ourstatus
->value
.integer
= WEXITSTATUS (hoststatus
);
1754 else if (!WIFSTOPPED (hoststatus
))
1756 ourstatus
->kind
= TARGET_WAITKIND_SIGNALLED
;
1757 ourstatus
->value
.sig
= target_signal_from_host (WTERMSIG (hoststatus
));
1761 ourstatus
->kind
= TARGET_WAITKIND_STOPPED
;
1762 ourstatus
->value
.sig
= target_signal_from_host (WSTOPSIG (hoststatus
));
1766 /* Returns zero to leave the inferior alone, one to interrupt it. */
1767 int (*target_activity_function
) (void);
1768 int target_activity_fd
;
1770 /* Convert a normal process ID to a string. Returns the string in a static
1774 normal_pid_to_str (ptid_t ptid
)
1776 static char buf
[30];
1778 sprintf (buf
, "process %d", PIDGET (ptid
));
1782 /* Error-catcher for target_find_memory_regions */
1783 static int dummy_find_memory_regions (int (*ignore1
) (), void *ignore2
)
1785 error (_("No target."));
1789 /* Error-catcher for target_make_corefile_notes */
1790 static char * dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
1792 error (_("No target."));
1796 /* Set up the handful of non-empty slots needed by the dummy target
1800 init_dummy_target (void)
1802 dummy_target
.to_shortname
= "None";
1803 dummy_target
.to_longname
= "None";
1804 dummy_target
.to_doc
= "";
1805 dummy_target
.to_attach
= find_default_attach
;
1806 dummy_target
.to_create_inferior
= find_default_create_inferior
;
1807 dummy_target
.to_pid_to_str
= normal_pid_to_str
;
1808 dummy_target
.to_stratum
= dummy_stratum
;
1809 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
1810 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
1811 dummy_target
.to_xfer_partial
= default_xfer_partial
;
1812 dummy_target
.to_magic
= OPS_MAGIC
;
1816 debug_to_open (char *args
, int from_tty
)
1818 debug_target
.to_open (args
, from_tty
);
1820 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
1824 debug_to_close (int quitting
)
1826 target_close (&debug_target
, quitting
);
1827 fprintf_unfiltered (gdb_stdlog
, "target_close (%d)\n", quitting
);
1831 target_close (struct target_ops
*targ
, int quitting
)
1833 if (targ
->to_xclose
!= NULL
)
1834 targ
->to_xclose (targ
, quitting
);
1835 else if (targ
->to_close
!= NULL
)
1836 targ
->to_close (quitting
);
1840 debug_to_attach (char *args
, int from_tty
)
1842 debug_target
.to_attach (args
, from_tty
);
1844 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n", args
, from_tty
);
1849 debug_to_post_attach (int pid
)
1851 debug_target
.to_post_attach (pid
);
1853 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
1857 debug_to_detach (char *args
, int from_tty
)
1859 debug_target
.to_detach (args
, from_tty
);
1861 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n", args
, from_tty
);
1865 debug_to_disconnect (char *args
, int from_tty
)
1867 debug_target
.to_disconnect (args
, from_tty
);
1869 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
1874 debug_to_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
1876 debug_target
.to_resume (ptid
, step
, siggnal
);
1878 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n", PIDGET (ptid
),
1879 step
? "step" : "continue",
1880 target_signal_to_name (siggnal
));
1884 debug_to_wait (ptid_t ptid
, struct target_waitstatus
*status
)
1888 retval
= debug_target
.to_wait (ptid
, status
);
1890 fprintf_unfiltered (gdb_stdlog
,
1891 "target_wait (%d, status) = %d, ", PIDGET (ptid
),
1893 fprintf_unfiltered (gdb_stdlog
, "status->kind = ");
1894 switch (status
->kind
)
1896 case TARGET_WAITKIND_EXITED
:
1897 fprintf_unfiltered (gdb_stdlog
, "exited, status = %d\n",
1898 status
->value
.integer
);
1900 case TARGET_WAITKIND_STOPPED
:
1901 fprintf_unfiltered (gdb_stdlog
, "stopped, signal = %s\n",
1902 target_signal_to_name (status
->value
.sig
));
1904 case TARGET_WAITKIND_SIGNALLED
:
1905 fprintf_unfiltered (gdb_stdlog
, "signalled, signal = %s\n",
1906 target_signal_to_name (status
->value
.sig
));
1908 case TARGET_WAITKIND_LOADED
:
1909 fprintf_unfiltered (gdb_stdlog
, "loaded\n");
1911 case TARGET_WAITKIND_FORKED
:
1912 fprintf_unfiltered (gdb_stdlog
, "forked\n");
1914 case TARGET_WAITKIND_VFORKED
:
1915 fprintf_unfiltered (gdb_stdlog
, "vforked\n");
1917 case TARGET_WAITKIND_EXECD
:
1918 fprintf_unfiltered (gdb_stdlog
, "execd\n");
1920 case TARGET_WAITKIND_SPURIOUS
:
1921 fprintf_unfiltered (gdb_stdlog
, "spurious\n");
1924 fprintf_unfiltered (gdb_stdlog
, "unknown???\n");
1932 debug_print_register (const char * func
, int regno
)
1934 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
1935 if (regno
>= 0 && regno
< NUM_REGS
+ NUM_PSEUDO_REGS
1936 && REGISTER_NAME (regno
) != NULL
&& REGISTER_NAME (regno
)[0] != '\0')
1937 fprintf_unfiltered (gdb_stdlog
, "(%s)", REGISTER_NAME (regno
));
1939 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
1943 unsigned char buf
[MAX_REGISTER_SIZE
];
1944 deprecated_read_register_gen (regno
, buf
);
1945 fprintf_unfiltered (gdb_stdlog
, " = ");
1946 for (i
= 0; i
< register_size (current_gdbarch
, regno
); i
++)
1948 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
1950 if (register_size (current_gdbarch
, regno
) <= sizeof (LONGEST
))
1952 fprintf_unfiltered (gdb_stdlog
, " 0x%s %s",
1953 paddr_nz (read_register (regno
)),
1954 paddr_d (read_register (regno
)));
1957 fprintf_unfiltered (gdb_stdlog
, "\n");
1961 debug_to_fetch_registers (int regno
)
1963 debug_target
.to_fetch_registers (regno
);
1964 debug_print_register ("target_fetch_registers", regno
);
1968 debug_to_store_registers (int regno
)
1970 debug_target
.to_store_registers (regno
);
1971 debug_print_register ("target_store_registers", regno
);
1972 fprintf_unfiltered (gdb_stdlog
, "\n");
1976 debug_to_prepare_to_store (void)
1978 debug_target
.to_prepare_to_store ();
1980 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
1984 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, char *myaddr
, int len
,
1985 int write
, struct mem_attrib
*attrib
,
1986 struct target_ops
*target
)
1990 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
1993 fprintf_unfiltered (gdb_stdlog
,
1994 "target_xfer_memory (0x%x, xxx, %d, %s, xxx) = %d",
1995 (unsigned int) memaddr
, /* possable truncate long long */
1996 len
, write
? "write" : "read", retval
);
2002 fputs_unfiltered (", bytes =", gdb_stdlog
);
2003 for (i
= 0; i
< retval
; i
++)
2005 if ((((long) &(myaddr
[i
])) & 0xf) == 0)
2007 if (targetdebug
< 2 && i
> 0)
2009 fprintf_unfiltered (gdb_stdlog
, " ...");
2012 fprintf_unfiltered (gdb_stdlog
, "\n");
2015 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
2019 fputc_unfiltered ('\n', gdb_stdlog
);
2025 debug_to_files_info (struct target_ops
*target
)
2027 debug_target
.to_files_info (target
);
2029 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
2033 debug_to_insert_breakpoint (CORE_ADDR addr
, char *save
)
2037 retval
= debug_target
.to_insert_breakpoint (addr
, save
);
2039 fprintf_unfiltered (gdb_stdlog
,
2040 "target_insert_breakpoint (0x%lx, xxx) = %ld\n",
2041 (unsigned long) addr
,
2042 (unsigned long) retval
);
2047 debug_to_remove_breakpoint (CORE_ADDR addr
, char *save
)
2051 retval
= debug_target
.to_remove_breakpoint (addr
, save
);
2053 fprintf_unfiltered (gdb_stdlog
,
2054 "target_remove_breakpoint (0x%lx, xxx) = %ld\n",
2055 (unsigned long) addr
,
2056 (unsigned long) retval
);
2061 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
2065 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
2067 fprintf_unfiltered (gdb_stdlog
,
2068 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
2069 (unsigned long) type
,
2070 (unsigned long) cnt
,
2071 (unsigned long) from_tty
,
2072 (unsigned long) retval
);
2077 debug_to_region_size_ok_for_hw_watchpoint (int byte_count
)
2081 retval
= debug_target
.to_region_size_ok_for_hw_watchpoint (byte_count
);
2083 fprintf_unfiltered (gdb_stdlog
,
2084 "TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT (%ld) = 0x%lx\n",
2085 (unsigned long) byte_count
,
2086 (unsigned long) retval
);
2091 debug_to_stopped_by_watchpoint (void)
2095 retval
= debug_target
.to_stopped_by_watchpoint ();
2097 fprintf_unfiltered (gdb_stdlog
,
2098 "STOPPED_BY_WATCHPOINT () = %ld\n",
2099 (unsigned long) retval
);
2104 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
2108 retval
= debug_target
.to_stopped_data_address (target
, addr
);
2110 fprintf_unfiltered (gdb_stdlog
,
2111 "target_stopped_data_address ([0x%lx]) = %ld\n",
2112 (unsigned long)*addr
,
2113 (unsigned long)retval
);
2118 debug_to_insert_hw_breakpoint (CORE_ADDR addr
, char *save
)
2122 retval
= debug_target
.to_insert_hw_breakpoint (addr
, save
);
2124 fprintf_unfiltered (gdb_stdlog
,
2125 "target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n",
2126 (unsigned long) addr
,
2127 (unsigned long) retval
);
2132 debug_to_remove_hw_breakpoint (CORE_ADDR addr
, char *save
)
2136 retval
= debug_target
.to_remove_hw_breakpoint (addr
, save
);
2138 fprintf_unfiltered (gdb_stdlog
,
2139 "target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n",
2140 (unsigned long) addr
,
2141 (unsigned long) retval
);
2146 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
2150 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
);
2152 fprintf_unfiltered (gdb_stdlog
,
2153 "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n",
2154 (unsigned long) addr
, len
, type
, (unsigned long) retval
);
2159 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
2163 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
);
2165 fprintf_unfiltered (gdb_stdlog
,
2166 "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n",
2167 (unsigned long) addr
, len
, type
, (unsigned long) retval
);
2172 debug_to_terminal_init (void)
2174 debug_target
.to_terminal_init ();
2176 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
2180 debug_to_terminal_inferior (void)
2182 debug_target
.to_terminal_inferior ();
2184 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
2188 debug_to_terminal_ours_for_output (void)
2190 debug_target
.to_terminal_ours_for_output ();
2192 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
2196 debug_to_terminal_ours (void)
2198 debug_target
.to_terminal_ours ();
2200 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
2204 debug_to_terminal_save_ours (void)
2206 debug_target
.to_terminal_save_ours ();
2208 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
2212 debug_to_terminal_info (char *arg
, int from_tty
)
2214 debug_target
.to_terminal_info (arg
, from_tty
);
2216 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
2221 debug_to_kill (void)
2223 debug_target
.to_kill ();
2225 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
2229 debug_to_load (char *args
, int from_tty
)
2231 debug_target
.to_load (args
, from_tty
);
2233 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
2237 debug_to_lookup_symbol (char *name
, CORE_ADDR
*addrp
)
2241 retval
= debug_target
.to_lookup_symbol (name
, addrp
);
2243 fprintf_unfiltered (gdb_stdlog
, "target_lookup_symbol (%s, xxx)\n", name
);
2249 debug_to_create_inferior (char *exec_file
, char *args
, char **env
,
2252 debug_target
.to_create_inferior (exec_file
, args
, env
, from_tty
);
2254 fprintf_unfiltered (gdb_stdlog
, "target_create_inferior (%s, %s, xxx, %d)\n",
2255 exec_file
, args
, from_tty
);
2259 debug_to_post_startup_inferior (ptid_t ptid
)
2261 debug_target
.to_post_startup_inferior (ptid
);
2263 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
2268 debug_to_acknowledge_created_inferior (int pid
)
2270 debug_target
.to_acknowledge_created_inferior (pid
);
2272 fprintf_unfiltered (gdb_stdlog
, "target_acknowledge_created_inferior (%d)\n",
2277 debug_to_insert_fork_catchpoint (int pid
)
2279 debug_target
.to_insert_fork_catchpoint (pid
);
2281 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d)\n",
2286 debug_to_remove_fork_catchpoint (int pid
)
2290 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
2292 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
2299 debug_to_insert_vfork_catchpoint (int pid
)
2301 debug_target
.to_insert_vfork_catchpoint (pid
);
2303 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d)\n",
2308 debug_to_remove_vfork_catchpoint (int pid
)
2312 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
2314 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
2321 debug_to_follow_fork (int follow_child
)
2323 int retval
= debug_target
.to_follow_fork (follow_child
);
2325 fprintf_unfiltered (gdb_stdlog
, "target_follow_fork (%d) = %d\n",
2326 follow_child
, retval
);
2332 debug_to_insert_exec_catchpoint (int pid
)
2334 debug_target
.to_insert_exec_catchpoint (pid
);
2336 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d)\n",
2341 debug_to_remove_exec_catchpoint (int pid
)
2345 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
2347 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
2354 debug_to_reported_exec_events_per_exec_call (void)
2356 int reported_exec_events
;
2358 reported_exec_events
= debug_target
.to_reported_exec_events_per_exec_call ();
2360 fprintf_unfiltered (gdb_stdlog
,
2361 "target_reported_exec_events_per_exec_call () = %d\n",
2362 reported_exec_events
);
2364 return reported_exec_events
;
2368 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
2372 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
2374 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
2375 pid
, wait_status
, *exit_status
, has_exited
);
2381 debug_to_mourn_inferior (void)
2383 debug_target
.to_mourn_inferior ();
2385 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2389 debug_to_can_run (void)
2393 retval
= debug_target
.to_can_run ();
2395 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
2401 debug_to_notice_signals (ptid_t ptid
)
2403 debug_target
.to_notice_signals (ptid
);
2405 fprintf_unfiltered (gdb_stdlog
, "target_notice_signals (%d)\n",
2410 debug_to_thread_alive (ptid_t ptid
)
2414 retval
= debug_target
.to_thread_alive (ptid
);
2416 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
2417 PIDGET (ptid
), retval
);
2423 debug_to_find_new_threads (void)
2425 debug_target
.to_find_new_threads ();
2427 fputs_unfiltered ("target_find_new_threads ()\n", gdb_stdlog
);
2431 debug_to_stop (void)
2433 debug_target
.to_stop ();
2435 fprintf_unfiltered (gdb_stdlog
, "target_stop ()\n");
2439 debug_to_rcmd (char *command
,
2440 struct ui_file
*outbuf
)
2442 debug_target
.to_rcmd (command
, outbuf
);
2443 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
2446 static struct symtab_and_line
*
2447 debug_to_enable_exception_callback (enum exception_event_kind kind
, int enable
)
2449 struct symtab_and_line
*result
;
2450 result
= debug_target
.to_enable_exception_callback (kind
, enable
);
2451 fprintf_unfiltered (gdb_stdlog
,
2452 "target get_exception_callback_sal (%d, %d)\n",
2457 static struct exception_event_record
*
2458 debug_to_get_current_exception_event (void)
2460 struct exception_event_record
*result
;
2461 result
= debug_target
.to_get_current_exception_event ();
2462 fprintf_unfiltered (gdb_stdlog
, "target get_current_exception_event ()\n");
2467 debug_to_pid_to_exec_file (int pid
)
2471 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
2473 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
2480 setup_target_debug (void)
2482 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
2484 current_target
.to_open
= debug_to_open
;
2485 current_target
.to_close
= debug_to_close
;
2486 current_target
.to_attach
= debug_to_attach
;
2487 current_target
.to_post_attach
= debug_to_post_attach
;
2488 current_target
.to_detach
= debug_to_detach
;
2489 current_target
.to_disconnect
= debug_to_disconnect
;
2490 current_target
.to_resume
= debug_to_resume
;
2491 current_target
.to_wait
= debug_to_wait
;
2492 current_target
.to_fetch_registers
= debug_to_fetch_registers
;
2493 current_target
.to_store_registers
= debug_to_store_registers
;
2494 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
2495 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
2496 current_target
.to_files_info
= debug_to_files_info
;
2497 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
2498 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
2499 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
2500 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
2501 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
2502 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
2503 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
2504 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
2505 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
2506 current_target
.to_region_size_ok_for_hw_watchpoint
= debug_to_region_size_ok_for_hw_watchpoint
;
2507 current_target
.to_terminal_init
= debug_to_terminal_init
;
2508 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
2509 current_target
.to_terminal_ours_for_output
= debug_to_terminal_ours_for_output
;
2510 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
2511 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
2512 current_target
.to_terminal_info
= debug_to_terminal_info
;
2513 current_target
.to_kill
= debug_to_kill
;
2514 current_target
.to_load
= debug_to_load
;
2515 current_target
.to_lookup_symbol
= debug_to_lookup_symbol
;
2516 current_target
.to_create_inferior
= debug_to_create_inferior
;
2517 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
2518 current_target
.to_acknowledge_created_inferior
= debug_to_acknowledge_created_inferior
;
2519 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
2520 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
2521 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
2522 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
2523 current_target
.to_follow_fork
= debug_to_follow_fork
;
2524 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
2525 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
2526 current_target
.to_reported_exec_events_per_exec_call
= debug_to_reported_exec_events_per_exec_call
;
2527 current_target
.to_has_exited
= debug_to_has_exited
;
2528 current_target
.to_mourn_inferior
= debug_to_mourn_inferior
;
2529 current_target
.to_can_run
= debug_to_can_run
;
2530 current_target
.to_notice_signals
= debug_to_notice_signals
;
2531 current_target
.to_thread_alive
= debug_to_thread_alive
;
2532 current_target
.to_find_new_threads
= debug_to_find_new_threads
;
2533 current_target
.to_stop
= debug_to_stop
;
2534 current_target
.to_rcmd
= debug_to_rcmd
;
2535 current_target
.to_enable_exception_callback
= debug_to_enable_exception_callback
;
2536 current_target
.to_get_current_exception_event
= debug_to_get_current_exception_event
;
2537 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
2542 static char targ_desc
[] =
2543 "Names of targets and files being debugged.\n\
2544 Shows the entire stack of targets currently in use (including the exec-file,\n\
2545 core-file, and process, if any), as well as the symbol file name.";
2548 do_monitor_command (char *cmd
,
2551 if ((current_target
.to_rcmd
2552 == (void (*) (char *, struct ui_file
*)) tcomplain
)
2553 || (current_target
.to_rcmd
== debug_to_rcmd
2554 && (debug_target
.to_rcmd
2555 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
2556 error (_("\"monitor\" command not supported by this target."));
2557 target_rcmd (cmd
, gdb_stdtarg
);
2561 initialize_targets (void)
2563 init_dummy_target ();
2564 push_target (&dummy_target
);
2566 add_info ("target", target_info
, targ_desc
);
2567 add_info ("files", target_info
, targ_desc
);
2569 add_setshow_zinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
2570 Set target debugging."), _("\
2571 Show target debugging."), _("\
2572 When non-zero, target debugging is enabled. Higher numbers are more\n\
2573 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
2577 &setdebuglist
, &showdebuglist
);
2579 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
2580 &trust_readonly
, _("\
2581 Set mode for reading from readonly sections."), _("\
2582 Show mode for reading from readonly sections."), _("\
2583 When this mode is on, memory reads from readonly sections (such as .text)\n\
2584 will be read from the object file instead of from the target. This will\n\
2585 result in significant performance improvement for remote targets."),
2587 show_trust_readonly
,
2588 &setlist
, &showlist
);
2590 add_com ("monitor", class_obscure
, do_monitor_command
,
2591 _("Send a command to the remote monitor (remote targets only)."));
2593 target_dcache
= dcache_init ();