1 /* Interface between GDB and target environments, including files and processes
3 Copyright (C) 1990-2013 Free Software Foundation, Inc.
5 Contributed by Cygnus Support. Written by John Gilmore.
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/>. */
22 #if !defined (TARGET_H)
30 struct bp_target_info
;
32 struct target_section_table
;
33 struct trace_state_variable
;
37 struct static_tracepoint_marker
;
38 struct traceframe_info
;
41 /* This include file defines the interface between the main part
42 of the debugger, and the part which is target-specific, or
43 specific to the communications interface between us and the
46 A TARGET is an interface between the debugger and a particular
47 kind of file or process. Targets can be STACKED in STRATA,
48 so that more than one target can potentially respond to a request.
49 In particular, memory accesses will walk down the stack of targets
50 until they find a target that is interested in handling that particular
51 address. STRATA are artificial boundaries on the stack, within
52 which particular kinds of targets live. Strata exist so that
53 people don't get confused by pushing e.g. a process target and then
54 a file target, and wondering why they can't see the current values
55 of variables any more (the file target is handling them and they
56 never get to the process target). So when you push a file target,
57 it goes into the file stratum, which is always below the process
64 #include "gdb_signals.h"
70 dummy_stratum
, /* The lowest of the low */
71 file_stratum
, /* Executable files, etc */
72 process_stratum
, /* Executing processes or core dump files */
73 thread_stratum
, /* Executing threads */
74 record_stratum
, /* Support record debugging */
75 arch_stratum
/* Architecture overrides */
78 enum thread_control_capabilities
80 tc_none
= 0, /* Default: can't control thread execution. */
81 tc_schedlock
= 1, /* Can lock the thread scheduler. */
84 /* Stuff for target_wait. */
86 /* Generally, what has the program done? */
89 /* The program has exited. The exit status is in value.integer. */
90 TARGET_WAITKIND_EXITED
,
92 /* The program has stopped with a signal. Which signal is in
94 TARGET_WAITKIND_STOPPED
,
96 /* The program has terminated with a signal. Which signal is in
98 TARGET_WAITKIND_SIGNALLED
,
100 /* The program is letting us know that it dynamically loaded something
101 (e.g. it called load(2) on AIX). */
102 TARGET_WAITKIND_LOADED
,
104 /* The program has forked. A "related" process' PTID is in
105 value.related_pid. I.e., if the child forks, value.related_pid
106 is the parent's ID. */
108 TARGET_WAITKIND_FORKED
,
110 /* The program has vforked. A "related" process's PTID is in
111 value.related_pid. */
113 TARGET_WAITKIND_VFORKED
,
115 /* The program has exec'ed a new executable file. The new file's
116 pathname is pointed to by value.execd_pathname. */
118 TARGET_WAITKIND_EXECD
,
120 /* The program had previously vforked, and now the child is done
121 with the shared memory region, because it exec'ed or exited.
122 Note that the event is reported to the vfork parent. This is
123 only used if GDB did not stay attached to the vfork child,
124 otherwise, a TARGET_WAITKIND_EXECD or
125 TARGET_WAITKIND_EXIT|SIGNALLED event associated with the child
126 has the same effect. */
127 TARGET_WAITKIND_VFORK_DONE
,
129 /* The program has entered or returned from a system call. On
130 HP-UX, this is used in the hardware watchpoint implementation.
131 The syscall's unique integer ID number is in value.syscall_id. */
133 TARGET_WAITKIND_SYSCALL_ENTRY
,
134 TARGET_WAITKIND_SYSCALL_RETURN
,
136 /* Nothing happened, but we stopped anyway. This perhaps should be handled
137 within target_wait, but I'm not sure target_wait should be resuming the
139 TARGET_WAITKIND_SPURIOUS
,
141 /* An event has occured, but we should wait again.
142 Remote_async_wait() returns this when there is an event
143 on the inferior, but the rest of the world is not interested in
144 it. The inferior has not stopped, but has just sent some output
145 to the console, for instance. In this case, we want to go back
146 to the event loop and wait there for another event from the
147 inferior, rather than being stuck in the remote_async_wait()
148 function. sThis way the event loop is responsive to other events,
149 like for instance the user typing. */
150 TARGET_WAITKIND_IGNORE
,
152 /* The target has run out of history information,
153 and cannot run backward any further. */
154 TARGET_WAITKIND_NO_HISTORY
,
156 /* There are no resumed children left in the program. */
157 TARGET_WAITKIND_NO_RESUMED
160 struct target_waitstatus
162 enum target_waitkind kind
;
164 /* Forked child pid, execd pathname, exit status, signal number or
171 char *execd_pathname
;
177 /* Options that can be passed to target_wait. */
179 /* Return immediately if there's no event already queued. If this
180 options is not requested, target_wait blocks waiting for an
182 #define TARGET_WNOHANG 1
184 /* The structure below stores information about a system call.
185 It is basically used in the "catch syscall" command, and in
186 every function that gives information about a system call.
188 It's also good to mention that its fields represent everything
189 that we currently know about a syscall in GDB. */
192 /* The syscall number. */
195 /* The syscall name. */
199 /* Return a pretty printed form of target_waitstatus.
200 Space for the result is malloc'd, caller must free. */
201 extern char *target_waitstatus_to_string (const struct target_waitstatus
*);
203 /* Return a pretty printed form of TARGET_OPTIONS.
204 Space for the result is malloc'd, caller must free. */
205 extern char *target_options_to_string (int target_options
);
207 /* Possible types of events that the inferior handler will have to
209 enum inferior_event_type
211 /* Process a normal inferior event which will result in target_wait
214 /* We are called because a timer went off. */
216 /* We are called to do stuff after the inferior stops. */
218 /* We are called to do some stuff after the inferior stops, but we
219 are expected to reenter the proceed() and
220 handle_inferior_event() functions. This is used only in case of
221 'step n' like commands. */
225 /* Target objects which can be transfered using target_read,
226 target_write, et cetera. */
230 /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */
232 /* SPU target specific transfer. See "spu-tdep.c". */
234 /* Transfer up-to LEN bytes of memory starting at OFFSET. */
235 TARGET_OBJECT_MEMORY
,
236 /* Memory, avoiding GDB's data cache and trusting the executable.
237 Target implementations of to_xfer_partial never need to handle
238 this object, and most callers should not use it. */
239 TARGET_OBJECT_RAW_MEMORY
,
240 /* Memory known to be part of the target's stack. This is cached even
241 if it is not in a region marked as such, since it is known to be
243 TARGET_OBJECT_STACK_MEMORY
,
244 /* Kernel Unwind Table. See "ia64-tdep.c". */
245 TARGET_OBJECT_UNWIND_TABLE
,
246 /* Transfer auxilliary vector. */
248 /* StackGhost cookie. See "sparc-tdep.c". */
249 TARGET_OBJECT_WCOOKIE
,
250 /* Target memory map in XML format. */
251 TARGET_OBJECT_MEMORY_MAP
,
252 /* Flash memory. This object can be used to write contents to
253 a previously erased flash memory. Using it without erasing
254 flash can have unexpected results. Addresses are physical
255 address on target, and not relative to flash start. */
257 /* Available target-specific features, e.g. registers and coprocessors.
258 See "target-descriptions.c". ANNEX should never be empty. */
259 TARGET_OBJECT_AVAILABLE_FEATURES
,
260 /* Currently loaded libraries, in XML format. */
261 TARGET_OBJECT_LIBRARIES
,
262 /* Currently loaded libraries specific for SVR4 systems, in XML format. */
263 TARGET_OBJECT_LIBRARIES_SVR4
,
264 /* Get OS specific data. The ANNEX specifies the type (running
265 processes, etc.). The data being transfered is expected to follow
266 the DTD specified in features/osdata.dtd. */
267 TARGET_OBJECT_OSDATA
,
268 /* Extra signal info. Usually the contents of `siginfo_t' on unix
270 TARGET_OBJECT_SIGNAL_INFO
,
271 /* The list of threads that are being debugged. */
272 TARGET_OBJECT_THREADS
,
273 /* Collected static trace data. */
274 TARGET_OBJECT_STATIC_TRACE_DATA
,
275 /* The HP-UX registers (those that can be obtained or modified by using
276 the TT_LWP_RUREGS/TT_LWP_WUREGS ttrace requests). */
277 TARGET_OBJECT_HPUX_UREGS
,
278 /* The HP-UX shared library linkage pointer. ANNEX should be a string
279 image of the code address whose linkage pointer we are looking for.
281 The size of the data transfered is always 8 bytes (the size of an
283 TARGET_OBJECT_HPUX_SOLIB_GOT
,
284 /* Traceframe info, in XML format. */
285 TARGET_OBJECT_TRACEFRAME_INFO
,
286 /* Load maps for FDPIC systems. */
288 /* Darwin dynamic linker info data. */
289 TARGET_OBJECT_DARWIN_DYLD_INFO
,
290 /* OpenVMS Unwind Information Block. */
291 TARGET_OBJECT_OPENVMS_UIB
,
292 /* Branch trace data, in XML format. */
294 /* Possible future objects: TARGET_OBJECT_FILE, ... */
297 /* Enumeration of the kinds of traceframe searches that a target may
298 be able to perform. */
309 typedef struct static_tracepoint_marker
*static_tracepoint_marker_p
;
310 DEF_VEC_P(static_tracepoint_marker_p
);
312 /* Request that OPS transfer up to LEN 8-bit bytes of the target's
313 OBJECT. The OFFSET, for a seekable object, specifies the
314 starting point. The ANNEX can be used to provide additional
315 data-specific information to the target.
317 Return the number of bytes actually transfered, or -1 if the
318 transfer is not supported or otherwise fails. Return of a positive
319 value less than LEN indicates that no further transfer is possible.
320 Unlike the raw to_xfer_partial interface, callers of these
321 functions do not need to retry partial transfers. */
323 extern LONGEST
target_read (struct target_ops
*ops
,
324 enum target_object object
,
325 const char *annex
, gdb_byte
*buf
,
326 ULONGEST offset
, LONGEST len
);
328 struct memory_read_result
330 /* First address that was read. */
332 /* Past-the-end address. */
337 typedef struct memory_read_result memory_read_result_s
;
338 DEF_VEC_O(memory_read_result_s
);
340 extern void free_memory_read_result_vector (void *);
342 extern VEC(memory_read_result_s
)* read_memory_robust (struct target_ops
*ops
,
346 extern LONGEST
target_write (struct target_ops
*ops
,
347 enum target_object object
,
348 const char *annex
, const gdb_byte
*buf
,
349 ULONGEST offset
, LONGEST len
);
351 /* Similar to target_write, except that it also calls PROGRESS with
352 the number of bytes written and the opaque BATON after every
353 successful partial write (and before the first write). This is
354 useful for progress reporting and user interaction while writing
355 data. To abort the transfer, the progress callback can throw an
358 LONGEST
target_write_with_progress (struct target_ops
*ops
,
359 enum target_object object
,
360 const char *annex
, const gdb_byte
*buf
,
361 ULONGEST offset
, LONGEST len
,
362 void (*progress
) (ULONGEST
, void *),
365 /* Wrapper to perform a full read of unknown size. OBJECT/ANNEX will
366 be read using OPS. The return value will be -1 if the transfer
367 fails or is not supported; 0 if the object is empty; or the length
368 of the object otherwise. If a positive value is returned, a
369 sufficiently large buffer will be allocated using xmalloc and
370 returned in *BUF_P containing the contents of the object.
372 This method should be used for objects sufficiently small to store
373 in a single xmalloc'd buffer, when no fixed bound on the object's
374 size is known in advance. Don't try to read TARGET_OBJECT_MEMORY
375 through this function. */
377 extern LONGEST
target_read_alloc (struct target_ops
*ops
,
378 enum target_object object
,
379 const char *annex
, gdb_byte
**buf_p
);
381 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
382 returned as a string, allocated using xmalloc. If an error occurs
383 or the transfer is unsupported, NULL is returned. Empty objects
384 are returned as allocated but empty strings. A warning is issued
385 if the result contains any embedded NUL bytes. */
387 extern char *target_read_stralloc (struct target_ops
*ops
,
388 enum target_object object
,
391 /* Wrappers to target read/write that perform memory transfers. They
392 throw an error if the memory transfer fails.
394 NOTE: cagney/2003-10-23: The naming schema is lifted from
395 "frame.h". The parameter order is lifted from get_frame_memory,
396 which in turn lifted it from read_memory. */
398 extern void get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
,
399 gdb_byte
*buf
, LONGEST len
);
400 extern ULONGEST
get_target_memory_unsigned (struct target_ops
*ops
,
401 CORE_ADDR addr
, int len
,
402 enum bfd_endian byte_order
);
404 struct thread_info
; /* fwd decl for parameter list below: */
408 struct target_ops
*beneath
; /* To the target under this one. */
409 char *to_shortname
; /* Name this target type */
410 char *to_longname
; /* Name for printing */
411 char *to_doc
; /* Documentation. Does not include trailing
412 newline, and starts with a one-line descrip-
413 tion (probably similar to to_longname). */
414 /* Per-target scratch pad. */
416 /* The open routine takes the rest of the parameters from the
417 command, and (if successful) pushes a new target onto the
418 stack. Targets should supply this routine, if only to provide
420 void (*to_open
) (char *, int);
421 /* Old targets with a static target vector provide "to_close".
422 New re-entrant targets provide "to_xclose" and that is expected
423 to xfree everything (including the "struct target_ops"). */
424 void (*to_xclose
) (struct target_ops
*targ
);
425 void (*to_close
) (void);
426 void (*to_attach
) (struct target_ops
*ops
, char *, int);
427 void (*to_post_attach
) (int);
428 void (*to_detach
) (struct target_ops
*ops
, char *, int);
429 void (*to_disconnect
) (struct target_ops
*, char *, int);
430 void (*to_resume
) (struct target_ops
*, ptid_t
, int, enum gdb_signal
);
431 ptid_t (*to_wait
) (struct target_ops
*,
432 ptid_t
, struct target_waitstatus
*, int);
433 void (*to_fetch_registers
) (struct target_ops
*, struct regcache
*, int);
434 void (*to_store_registers
) (struct target_ops
*, struct regcache
*, int);
435 void (*to_prepare_to_store
) (struct regcache
*);
437 /* Transfer LEN bytes of memory between GDB address MYADDR and
438 target address MEMADDR. If WRITE, transfer them to the target, else
439 transfer them from the target. TARGET is the target from which we
442 Return value, N, is one of the following:
444 0 means that we can't handle this. If errno has been set, it is the
445 error which prevented us from doing it (FIXME: What about bfd_error?).
447 positive (call it N) means that we have transferred N bytes
448 starting at MEMADDR. We might be able to handle more bytes
449 beyond this length, but no promises.
451 negative (call its absolute value N) means that we cannot
452 transfer right at MEMADDR, but we could transfer at least
453 something at MEMADDR + N.
455 NOTE: cagney/2004-10-01: This has been entirely superseeded by
456 to_xfer_partial and inferior inheritance. */
458 int (*deprecated_xfer_memory
) (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
460 struct mem_attrib
*attrib
,
461 struct target_ops
*target
);
463 void (*to_files_info
) (struct target_ops
*);
464 int (*to_insert_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
465 int (*to_remove_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
466 int (*to_can_use_hw_breakpoint
) (int, int, int);
467 int (*to_ranged_break_num_registers
) (struct target_ops
*);
468 int (*to_insert_hw_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
469 int (*to_remove_hw_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
471 /* Documentation of what the two routines below are expected to do is
472 provided with the corresponding target_* macros. */
473 int (*to_remove_watchpoint
) (CORE_ADDR
, int, int, struct expression
*);
474 int (*to_insert_watchpoint
) (CORE_ADDR
, int, int, struct expression
*);
476 int (*to_insert_mask_watchpoint
) (struct target_ops
*,
477 CORE_ADDR
, CORE_ADDR
, int);
478 int (*to_remove_mask_watchpoint
) (struct target_ops
*,
479 CORE_ADDR
, CORE_ADDR
, int);
480 int (*to_stopped_by_watchpoint
) (void);
481 int to_have_steppable_watchpoint
;
482 int to_have_continuable_watchpoint
;
483 int (*to_stopped_data_address
) (struct target_ops
*, CORE_ADDR
*);
484 int (*to_watchpoint_addr_within_range
) (struct target_ops
*,
485 CORE_ADDR
, CORE_ADDR
, int);
487 /* Documentation of this routine is provided with the corresponding
489 int (*to_region_ok_for_hw_watchpoint
) (CORE_ADDR
, int);
491 int (*to_can_accel_watchpoint_condition
) (CORE_ADDR
, int, int,
492 struct expression
*);
493 int (*to_masked_watch_num_registers
) (struct target_ops
*,
494 CORE_ADDR
, CORE_ADDR
);
495 void (*to_terminal_init
) (void);
496 void (*to_terminal_inferior
) (void);
497 void (*to_terminal_ours_for_output
) (void);
498 void (*to_terminal_ours
) (void);
499 void (*to_terminal_save_ours
) (void);
500 void (*to_terminal_info
) (char *, int);
501 void (*to_kill
) (struct target_ops
*);
502 void (*to_load
) (char *, int);
503 void (*to_create_inferior
) (struct target_ops
*,
504 char *, char *, char **, int);
505 void (*to_post_startup_inferior
) (ptid_t
);
506 int (*to_insert_fork_catchpoint
) (int);
507 int (*to_remove_fork_catchpoint
) (int);
508 int (*to_insert_vfork_catchpoint
) (int);
509 int (*to_remove_vfork_catchpoint
) (int);
510 int (*to_follow_fork
) (struct target_ops
*, int);
511 int (*to_insert_exec_catchpoint
) (int);
512 int (*to_remove_exec_catchpoint
) (int);
513 int (*to_set_syscall_catchpoint
) (int, int, int, int, int *);
514 int (*to_has_exited
) (int, int, int *);
515 void (*to_mourn_inferior
) (struct target_ops
*);
516 int (*to_can_run
) (void);
518 /* Documentation of this routine is provided with the corresponding
520 void (*to_pass_signals
) (int, unsigned char *);
522 /* Documentation of this routine is provided with the
523 corresponding target_* function. */
524 void (*to_program_signals
) (int, unsigned char *);
526 int (*to_thread_alive
) (struct target_ops
*, ptid_t ptid
);
527 void (*to_find_new_threads
) (struct target_ops
*);
528 char *(*to_pid_to_str
) (struct target_ops
*, ptid_t
);
529 char *(*to_extra_thread_info
) (struct thread_info
*);
530 char *(*to_thread_name
) (struct thread_info
*);
531 void (*to_stop
) (ptid_t
);
532 void (*to_rcmd
) (char *command
, struct ui_file
*output
);
533 char *(*to_pid_to_exec_file
) (int pid
);
534 void (*to_log_command
) (const char *);
535 struct target_section_table
*(*to_get_section_table
) (struct target_ops
*);
536 enum strata to_stratum
;
537 int (*to_has_all_memory
) (struct target_ops
*);
538 int (*to_has_memory
) (struct target_ops
*);
539 int (*to_has_stack
) (struct target_ops
*);
540 int (*to_has_registers
) (struct target_ops
*);
541 int (*to_has_execution
) (struct target_ops
*, ptid_t
);
542 int to_has_thread_control
; /* control thread execution */
543 int to_attach_no_wait
;
544 /* ASYNC target controls */
545 int (*to_can_async_p
) (void);
546 int (*to_is_async_p
) (void);
547 void (*to_async
) (void (*) (enum inferior_event_type
, void *), void *);
548 int (*to_supports_non_stop
) (void);
549 /* find_memory_regions support method for gcore */
550 int (*to_find_memory_regions
) (find_memory_region_ftype func
, void *data
);
551 /* make_corefile_notes support method for gcore */
552 char * (*to_make_corefile_notes
) (bfd
*, int *);
553 /* get_bookmark support method for bookmarks */
554 gdb_byte
* (*to_get_bookmark
) (char *, int);
555 /* goto_bookmark support method for bookmarks */
556 void (*to_goto_bookmark
) (gdb_byte
*, int);
557 /* Return the thread-local address at OFFSET in the
558 thread-local storage for the thread PTID and the shared library
559 or executable file given by OBJFILE. If that block of
560 thread-local storage hasn't been allocated yet, this function
561 may return an error. */
562 CORE_ADDR (*to_get_thread_local_address
) (struct target_ops
*ops
,
564 CORE_ADDR load_module_addr
,
567 /* Request that OPS transfer up to LEN 8-bit bytes of the target's
568 OBJECT. The OFFSET, for a seekable object, specifies the
569 starting point. The ANNEX can be used to provide additional
570 data-specific information to the target.
572 Return the number of bytes actually transfered, zero when no
573 further transfer is possible, and -1 when the transfer is not
574 supported. Return of a positive value smaller than LEN does
575 not indicate the end of the object, only the end of the
576 transfer; higher level code should continue transferring if
577 desired. This is handled in target.c.
579 The interface does not support a "retry" mechanism. Instead it
580 assumes that at least one byte will be transfered on each
583 NOTE: cagney/2003-10-17: The current interface can lead to
584 fragmented transfers. Lower target levels should not implement
585 hacks, such as enlarging the transfer, in an attempt to
586 compensate for this. Instead, the target stack should be
587 extended so that it implements supply/collect methods and a
588 look-aside object cache. With that available, the lowest
589 target can safely and freely "push" data up the stack.
591 See target_read and target_write for more information. One,
592 and only one, of readbuf or writebuf must be non-NULL. */
594 LONGEST (*to_xfer_partial
) (struct target_ops
*ops
,
595 enum target_object object
, const char *annex
,
596 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
597 ULONGEST offset
, LONGEST len
);
599 /* Returns the memory map for the target. A return value of NULL
600 means that no memory map is available. If a memory address
601 does not fall within any returned regions, it's assumed to be
602 RAM. The returned memory regions should not overlap.
604 The order of regions does not matter; target_memory_map will
605 sort regions by starting address. For that reason, this
606 function should not be called directly except via
609 This method should not cache data; if the memory map could
610 change unexpectedly, it should be invalidated, and higher
611 layers will re-fetch it. */
612 VEC(mem_region_s
) *(*to_memory_map
) (struct target_ops
*);
614 /* Erases the region of flash memory starting at ADDRESS, of
617 Precondition: both ADDRESS and ADDRESS+LENGTH should be aligned
618 on flash block boundaries, as reported by 'to_memory_map'. */
619 void (*to_flash_erase
) (struct target_ops
*,
620 ULONGEST address
, LONGEST length
);
622 /* Finishes a flash memory write sequence. After this operation
623 all flash memory should be available for writing and the result
624 of reading from areas written by 'to_flash_write' should be
625 equal to what was written. */
626 void (*to_flash_done
) (struct target_ops
*);
628 /* Describe the architecture-specific features of this target.
629 Returns the description found, or NULL if no description
631 const struct target_desc
*(*to_read_description
) (struct target_ops
*ops
);
633 /* Build the PTID of the thread on which a given task is running,
634 based on LWP and THREAD. These values are extracted from the
635 task Private_Data section of the Ada Task Control Block, and
636 their interpretation depends on the target. */
637 ptid_t (*to_get_ada_task_ptid
) (long lwp
, long thread
);
639 /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
640 Return 0 if *READPTR is already at the end of the buffer.
641 Return -1 if there is insufficient buffer for a whole entry.
642 Return 1 if an entry was read into *TYPEP and *VALP. */
643 int (*to_auxv_parse
) (struct target_ops
*ops
, gdb_byte
**readptr
,
644 gdb_byte
*endptr
, CORE_ADDR
*typep
, CORE_ADDR
*valp
);
646 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
647 sequence of bytes in PATTERN with length PATTERN_LEN.
649 The result is 1 if found, 0 if not found, and -1 if there was an error
650 requiring halting of the search (e.g. memory read error).
651 If the pattern is found the address is recorded in FOUND_ADDRP. */
652 int (*to_search_memory
) (struct target_ops
*ops
,
653 CORE_ADDR start_addr
, ULONGEST search_space_len
,
654 const gdb_byte
*pattern
, ULONGEST pattern_len
,
655 CORE_ADDR
*found_addrp
);
657 /* Can target execute in reverse? */
658 int (*to_can_execute_reverse
) (void);
660 /* The direction the target is currently executing. Must be
661 implemented on targets that support reverse execution and async
662 mode. The default simply returns forward execution. */
663 enum exec_direction_kind (*to_execution_direction
) (void);
665 /* Does this target support debugging multiple processes
667 int (*to_supports_multi_process
) (void);
669 /* Does this target support enabling and disabling tracepoints while a trace
670 experiment is running? */
671 int (*to_supports_enable_disable_tracepoint
) (void);
673 /* Does this target support disabling address space randomization? */
674 int (*to_supports_disable_randomization
) (void);
676 /* Does this target support the tracenz bytecode for string collection? */
677 int (*to_supports_string_tracing
) (void);
679 /* Does this target support evaluation of breakpoint conditions on its
681 int (*to_supports_evaluation_of_breakpoint_conditions
) (void);
683 /* Does this target support evaluation of breakpoint commands on its
685 int (*to_can_run_breakpoint_commands
) (void);
687 /* Determine current architecture of thread PTID.
689 The target is supposed to determine the architecture of the code where
690 the target is currently stopped at (on Cell, if a target is in spu_run,
691 to_thread_architecture would return SPU, otherwise PPC32 or PPC64).
692 This is architecture used to perform decr_pc_after_break adjustment,
693 and also determines the frame architecture of the innermost frame.
694 ptrace operations need to operate according to target_gdbarch ().
696 The default implementation always returns target_gdbarch (). */
697 struct gdbarch
*(*to_thread_architecture
) (struct target_ops
*, ptid_t
);
699 /* Determine current address space of thread PTID.
701 The default implementation always returns the inferior's
703 struct address_space
*(*to_thread_address_space
) (struct target_ops
*,
706 /* Target file operations. */
708 /* Open FILENAME on the target, using FLAGS and MODE. Return a
709 target file descriptor, or -1 if an error occurs (and set
711 int (*to_fileio_open
) (const char *filename
, int flags
, int mode
,
714 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
715 Return the number of bytes written, or -1 if an error occurs
716 (and set *TARGET_ERRNO). */
717 int (*to_fileio_pwrite
) (int fd
, const gdb_byte
*write_buf
, int len
,
718 ULONGEST offset
, int *target_errno
);
720 /* Read up to LEN bytes FD on the target into READ_BUF.
721 Return the number of bytes read, or -1 if an error occurs
722 (and set *TARGET_ERRNO). */
723 int (*to_fileio_pread
) (int fd
, gdb_byte
*read_buf
, int len
,
724 ULONGEST offset
, int *target_errno
);
726 /* Close FD on the target. Return 0, or -1 if an error occurs
727 (and set *TARGET_ERRNO). */
728 int (*to_fileio_close
) (int fd
, int *target_errno
);
730 /* Unlink FILENAME on the target. Return 0, or -1 if an error
731 occurs (and set *TARGET_ERRNO). */
732 int (*to_fileio_unlink
) (const char *filename
, int *target_errno
);
734 /* Read value of symbolic link FILENAME on the target. Return a
735 null-terminated string allocated via xmalloc, or NULL if an error
736 occurs (and set *TARGET_ERRNO). */
737 char *(*to_fileio_readlink
) (const char *filename
, int *target_errno
);
740 /* Implement the "info proc" command. */
741 void (*to_info_proc
) (struct target_ops
*, char *, enum info_proc_what
);
743 /* Tracepoint-related operations. */
745 /* Prepare the target for a tracing run. */
746 void (*to_trace_init
) (void);
748 /* Send full details of a tracepoint location to the target. */
749 void (*to_download_tracepoint
) (struct bp_location
*location
);
751 /* Is the target able to download tracepoint locations in current
753 int (*to_can_download_tracepoint
) (void);
755 /* Send full details of a trace state variable to the target. */
756 void (*to_download_trace_state_variable
) (struct trace_state_variable
*tsv
);
758 /* Enable a tracepoint on the target. */
759 void (*to_enable_tracepoint
) (struct bp_location
*location
);
761 /* Disable a tracepoint on the target. */
762 void (*to_disable_tracepoint
) (struct bp_location
*location
);
764 /* Inform the target info of memory regions that are readonly
765 (such as text sections), and so it should return data from
766 those rather than look in the trace buffer. */
767 void (*to_trace_set_readonly_regions
) (void);
769 /* Start a trace run. */
770 void (*to_trace_start
) (void);
772 /* Get the current status of a tracing run. */
773 int (*to_get_trace_status
) (struct trace_status
*ts
);
775 void (*to_get_tracepoint_status
) (struct breakpoint
*tp
,
776 struct uploaded_tp
*utp
);
778 /* Stop a trace run. */
779 void (*to_trace_stop
) (void);
781 /* Ask the target to find a trace frame of the given type TYPE,
782 using NUM, ADDR1, and ADDR2 as search parameters. Returns the
783 number of the trace frame, and also the tracepoint number at
784 TPP. If no trace frame matches, return -1. May throw if the
786 int (*to_trace_find
) (enum trace_find_type type
, int num
,
787 ULONGEST addr1
, ULONGEST addr2
, int *tpp
);
789 /* Get the value of the trace state variable number TSV, returning
790 1 if the value is known and writing the value itself into the
791 location pointed to by VAL, else returning 0. */
792 int (*to_get_trace_state_variable_value
) (int tsv
, LONGEST
*val
);
794 int (*to_save_trace_data
) (const char *filename
);
796 int (*to_upload_tracepoints
) (struct uploaded_tp
**utpp
);
798 int (*to_upload_trace_state_variables
) (struct uploaded_tsv
**utsvp
);
800 LONGEST (*to_get_raw_trace_data
) (gdb_byte
*buf
,
801 ULONGEST offset
, LONGEST len
);
803 /* Get the minimum length of instruction on which a fast tracepoint
804 may be set on the target. If this operation is unsupported,
805 return -1. If for some reason the minimum length cannot be
806 determined, return 0. */
807 int (*to_get_min_fast_tracepoint_insn_len
) (void);
809 /* Set the target's tracing behavior in response to unexpected
810 disconnection - set VAL to 1 to keep tracing, 0 to stop. */
811 void (*to_set_disconnected_tracing
) (int val
);
812 void (*to_set_circular_trace_buffer
) (int val
);
813 /* Set the size of trace buffer in the target. */
814 void (*to_set_trace_buffer_size
) (LONGEST val
);
816 /* Add/change textual notes about the trace run, returning 1 if
817 successful, 0 otherwise. */
818 int (*to_set_trace_notes
) (char *user
, char *notes
, char* stopnotes
);
820 /* Return the processor core that thread PTID was last seen on.
821 This information is updated only when:
822 - update_thread_list is called
824 If the core cannot be determined -- either for the specified
825 thread, or right now, or in this debug session, or for this
826 target -- return -1. */
827 int (*to_core_of_thread
) (struct target_ops
*, ptid_t ptid
);
829 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range
830 matches the contents of [DATA,DATA+SIZE). Returns 1 if there's
831 a match, 0 if there's a mismatch, and -1 if an error is
832 encountered while reading memory. */
833 int (*to_verify_memory
) (struct target_ops
*, const gdb_byte
*data
,
834 CORE_ADDR memaddr
, ULONGEST size
);
836 /* Return the address of the start of the Thread Information Block
837 a Windows OS specific feature. */
838 int (*to_get_tib_address
) (ptid_t ptid
, CORE_ADDR
*addr
);
840 /* Send the new settings of write permission variables. */
841 void (*to_set_permissions
) (void);
843 /* Look for a static tracepoint marker at ADDR, and fill in MARKER
844 with its details. Return 1 on success, 0 on failure. */
845 int (*to_static_tracepoint_marker_at
) (CORE_ADDR
,
846 struct static_tracepoint_marker
*marker
);
848 /* Return a vector of all tracepoints markers string id ID, or all
849 markers if ID is NULL. */
850 VEC(static_tracepoint_marker_p
) *(*to_static_tracepoint_markers_by_strid
)
853 /* Return a traceframe info object describing the current
854 traceframe's contents. This method should not cache data;
855 higher layers take care of caching, invalidating, and
856 re-fetching when necessary. */
857 struct traceframe_info
*(*to_traceframe_info
) (void);
859 /* Ask the target to use or not to use agent according to USE. Return 1
860 successful, 0 otherwise. */
861 int (*to_use_agent
) (int use
);
863 /* Is the target able to use agent in current state? */
864 int (*to_can_use_agent
) (void);
866 /* Check whether the target supports branch tracing. */
867 int (*to_supports_btrace
) (void);
869 /* Enable branch tracing for PTID and allocate a branch trace target
870 information struct for reading and for disabling branch trace. */
871 struct btrace_target_info
*(*to_enable_btrace
) (ptid_t ptid
);
873 /* Disable branch tracing and deallocate TINFO. */
874 void (*to_disable_btrace
) (struct btrace_target_info
*tinfo
);
876 /* Disable branch tracing and deallocate TINFO. This function is similar
877 to to_disable_btrace, except that it is called during teardown and is
878 only allowed to perform actions that are safe. A counter-example would
879 be attempting to talk to a remote target. */
880 void (*to_teardown_btrace
) (struct btrace_target_info
*tinfo
);
882 /* Read branch trace data. */
883 VEC (btrace_block_s
) *(*to_read_btrace
) (struct btrace_target_info
*,
884 enum btrace_read_type
);
886 /* Stop trace recording. */
887 void (*to_stop_recording
) (void);
889 /* Print information about the recording. */
890 void (*to_info_record
) (void);
892 /* Save the recorded execution trace into a file. */
893 void (*to_save_record
) (char *filename
);
895 /* Delete the recorded execution trace from the current position onwards. */
896 void (*to_delete_record
) (void);
898 /* Query if the record target is currently replaying. */
899 int (*to_record_is_replaying
) (void);
901 /* Go to the begin of the execution trace. */
902 void (*to_goto_record_begin
) (void);
904 /* Go to the end of the execution trace. */
905 void (*to_goto_record_end
) (void);
907 /* Go to a specific location in the recorded execution trace. */
908 void (*to_goto_record
) (ULONGEST insn
);
910 /* Disassemble SIZE instructions in the recorded execution trace from
911 the current position.
912 If SIZE < 0, disassemble abs (SIZE) preceding instructions; otherwise,
913 disassemble SIZE succeeding instructions. */
914 void (*to_insn_history
) (int size
, int flags
);
916 /* Disassemble SIZE instructions in the recorded execution trace around
918 If SIZE < 0, disassemble abs (SIZE) instructions before FROM; otherwise,
919 disassemble SIZE instructions after FROM. */
920 void (*to_insn_history_from
) (ULONGEST from
, int size
, int flags
);
922 /* Disassemble a section of the recorded execution trace from instruction
923 BEGIN (inclusive) to instruction END (exclusive). */
924 void (*to_insn_history_range
) (ULONGEST begin
, ULONGEST end
, int flags
);
926 /* Print a function trace of the recorded execution trace.
927 If SIZE < 0, print abs (SIZE) preceding functions; otherwise, print SIZE
928 succeeding functions. */
929 void (*to_call_history
) (int size
, int flags
);
931 /* Print a function trace of the recorded execution trace starting
933 If SIZE < 0, print abs (SIZE) functions before FROM; otherwise, print
934 SIZE functions after FROM. */
935 void (*to_call_history_from
) (ULONGEST begin
, int size
, int flags
);
937 /* Print a function trace of an execution trace section from function BEGIN
938 (inclusive) to function END (exclusive). */
939 void (*to_call_history_range
) (ULONGEST begin
, ULONGEST end
, int flags
);
942 /* Need sub-structure for target machine related rather than comm related?
946 /* Magic number for checking ops size. If a struct doesn't end with this
947 number, somebody changed the declaration but didn't change all the
948 places that initialize one. */
950 #define OPS_MAGIC 3840
952 /* The ops structure for our "current" target process. This should
953 never be NULL. If there is no target, it points to the dummy_target. */
955 extern struct target_ops current_target
;
957 /* Define easy words for doing these operations on our current target. */
959 #define target_shortname (current_target.to_shortname)
960 #define target_longname (current_target.to_longname)
962 /* Does whatever cleanup is required for a target that we are no
963 longer going to be calling. This routine is automatically always
964 called after popping the target off the target stack - the target's
965 own methods are no longer available through the target vector.
966 Closing file descriptors and freeing all memory allocated memory are
967 typical things it should do. */
969 void target_close (struct target_ops
*targ
);
971 /* Attaches to a process on the target side. Arguments are as passed
972 to the `attach' command by the user. This routine can be called
973 when the target is not on the target-stack, if the target_can_run
974 routine returns 1; in that case, it must push itself onto the stack.
975 Upon exit, the target should be ready for normal operations, and
976 should be ready to deliver the status of the process immediately
977 (without waiting) to an upcoming target_wait call. */
979 void target_attach (char *, int);
981 /* Some targets don't generate traps when attaching to the inferior,
982 or their target_attach implementation takes care of the waiting.
983 These targets must set to_attach_no_wait. */
985 #define target_attach_no_wait \
986 (current_target.to_attach_no_wait)
988 /* The target_attach operation places a process under debugger control,
989 and stops the process.
991 This operation provides a target-specific hook that allows the
992 necessary bookkeeping to be performed after an attach completes. */
993 #define target_post_attach(pid) \
994 (*current_target.to_post_attach) (pid)
996 /* Takes a program previously attached to and detaches it.
997 The program may resume execution (some targets do, some don't) and will
998 no longer stop on signals, etc. We better not have left any breakpoints
999 in the program or it'll die when it hits one. ARGS is arguments
1000 typed by the user (e.g. a signal to send the process). FROM_TTY
1001 says whether to be verbose or not. */
1003 extern void target_detach (char *, int);
1005 /* Disconnect from the current target without resuming it (leaving it
1006 waiting for a debugger). */
1008 extern void target_disconnect (char *, int);
1010 /* Resume execution of the target process PTID (or a group of
1011 threads). STEP says whether to single-step or to run free; SIGGNAL
1012 is the signal to be given to the target, or GDB_SIGNAL_0 for no
1013 signal. The caller may not pass GDB_SIGNAL_DEFAULT. A specific
1014 PTID means `step/resume only this process id'. A wildcard PTID
1015 (all threads, or all threads of process) means `step/resume
1016 INFERIOR_PTID, and let other threads (for which the wildcard PTID
1017 matches) resume with their 'thread->suspend.stop_signal' signal
1018 (usually GDB_SIGNAL_0) if it is in "pass" state, or with no signal
1019 if in "no pass" state. */
1021 extern void target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
);
1023 /* Wait for process pid to do something. PTID = -1 to wait for any
1024 pid to do something. Return pid of child, or -1 in case of error;
1025 store status through argument pointer STATUS. Note that it is
1026 _NOT_ OK to throw_exception() out of target_wait() without popping
1027 the debugging target from the stack; GDB isn't prepared to get back
1028 to the prompt with a debugging target but without the frame cache,
1029 stop_pc, etc., set up. OPTIONS is a bitwise OR of TARGET_W*
1032 extern ptid_t
target_wait (ptid_t ptid
, struct target_waitstatus
*status
,
1035 /* Fetch at least register REGNO, or all regs if regno == -1. No result. */
1037 extern void target_fetch_registers (struct regcache
*regcache
, int regno
);
1039 /* Store at least register REGNO, or all regs if REGNO == -1.
1040 It can store as many registers as it wants to, so target_prepare_to_store
1041 must have been previously called. Calls error() if there are problems. */
1043 extern void target_store_registers (struct regcache
*regcache
, int regs
);
1045 /* Get ready to modify the registers array. On machines which store
1046 individual registers, this doesn't need to do anything. On machines
1047 which store all the registers in one fell swoop, this makes sure
1048 that REGISTERS contains all the registers from the program being
1051 #define target_prepare_to_store(regcache) \
1052 (*current_target.to_prepare_to_store) (regcache)
1054 /* Determine current address space of thread PTID. */
1056 struct address_space
*target_thread_address_space (ptid_t
);
1058 /* Implement the "info proc" command. This returns one if the request
1059 was handled, and zero otherwise. It can also throw an exception if
1060 an error was encountered while attempting to handle the
1063 int target_info_proc (char *, enum info_proc_what
);
1065 /* Returns true if this target can debug multiple processes
1068 #define target_supports_multi_process() \
1069 (*current_target.to_supports_multi_process) ()
1071 /* Returns true if this target can disable address space randomization. */
1073 int target_supports_disable_randomization (void);
1075 /* Returns true if this target can enable and disable tracepoints
1076 while a trace experiment is running. */
1078 #define target_supports_enable_disable_tracepoint() \
1079 (*current_target.to_supports_enable_disable_tracepoint) ()
1081 #define target_supports_string_tracing() \
1082 (*current_target.to_supports_string_tracing) ()
1084 /* Returns true if this target can handle breakpoint conditions
1087 #define target_supports_evaluation_of_breakpoint_conditions() \
1088 (*current_target.to_supports_evaluation_of_breakpoint_conditions) ()
1090 /* Returns true if this target can handle breakpoint commands
1093 #define target_can_run_breakpoint_commands() \
1094 (*current_target.to_can_run_breakpoint_commands) ()
1096 /* Invalidate all target dcaches. */
1097 extern void target_dcache_invalidate (void);
1099 extern int target_read_string (CORE_ADDR
, char **, int, int *);
1101 extern int target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
1104 extern int target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
);
1106 extern int target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
,
1109 extern int target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
,
1112 /* Fetches the target's memory map. If one is found it is sorted
1113 and returned, after some consistency checking. Otherwise, NULL
1115 VEC(mem_region_s
) *target_memory_map (void);
1117 /* Erase the specified flash region. */
1118 void target_flash_erase (ULONGEST address
, LONGEST length
);
1120 /* Finish a sequence of flash operations. */
1121 void target_flash_done (void);
1123 /* Describes a request for a memory write operation. */
1124 struct memory_write_request
1126 /* Begining address that must be written. */
1128 /* Past-the-end address. */
1130 /* The data to write. */
1132 /* A callback baton for progress reporting for this request. */
1135 typedef struct memory_write_request memory_write_request_s
;
1136 DEF_VEC_O(memory_write_request_s
);
1138 /* Enumeration specifying different flash preservation behaviour. */
1139 enum flash_preserve_mode
1145 /* Write several memory blocks at once. This version can be more
1146 efficient than making several calls to target_write_memory, in
1147 particular because it can optimize accesses to flash memory.
1149 Moreover, this is currently the only memory access function in gdb
1150 that supports writing to flash memory, and it should be used for
1151 all cases where access to flash memory is desirable.
1153 REQUESTS is the vector (see vec.h) of memory_write_request.
1154 PRESERVE_FLASH_P indicates what to do with blocks which must be
1155 erased, but not completely rewritten.
1156 PROGRESS_CB is a function that will be periodically called to provide
1157 feedback to user. It will be called with the baton corresponding
1158 to the request currently being written. It may also be called
1159 with a NULL baton, when preserved flash sectors are being rewritten.
1161 The function returns 0 on success, and error otherwise. */
1162 int target_write_memory_blocks (VEC(memory_write_request_s
) *requests
,
1163 enum flash_preserve_mode preserve_flash_p
,
1164 void (*progress_cb
) (ULONGEST
, void *));
1166 /* Print a line about the current target. */
1168 #define target_files_info() \
1169 (*current_target.to_files_info) (¤t_target)
1171 /* Insert a breakpoint at address BP_TGT->placed_address in the target
1172 machine. Result is 0 for success, or an errno value. */
1174 extern int target_insert_breakpoint (struct gdbarch
*gdbarch
,
1175 struct bp_target_info
*bp_tgt
);
1177 /* Remove a breakpoint at address BP_TGT->placed_address in the target
1178 machine. Result is 0 for success, or an errno value. */
1180 extern int target_remove_breakpoint (struct gdbarch
*gdbarch
,
1181 struct bp_target_info
*bp_tgt
);
1183 /* Initialize the terminal settings we record for the inferior,
1184 before we actually run the inferior. */
1186 #define target_terminal_init() \
1187 (*current_target.to_terminal_init) ()
1189 /* Put the inferior's terminal settings into effect.
1190 This is preparation for starting or resuming the inferior. */
1192 extern void target_terminal_inferior (void);
1194 /* Put some of our terminal settings into effect,
1195 enough to get proper results from our output,
1196 but do not change into or out of RAW mode
1197 so that no input is discarded.
1199 After doing this, either terminal_ours or terminal_inferior
1200 should be called to get back to a normal state of affairs. */
1202 #define target_terminal_ours_for_output() \
1203 (*current_target.to_terminal_ours_for_output) ()
1205 /* Put our terminal settings into effect.
1206 First record the inferior's terminal settings
1207 so they can be restored properly later. */
1209 #define target_terminal_ours() \
1210 (*current_target.to_terminal_ours) ()
1212 /* Save our terminal settings.
1213 This is called from TUI after entering or leaving the curses
1214 mode. Since curses modifies our terminal this call is here
1215 to take this change into account. */
1217 #define target_terminal_save_ours() \
1218 (*current_target.to_terminal_save_ours) ()
1220 /* Print useful information about our terminal status, if such a thing
1223 #define target_terminal_info(arg, from_tty) \
1224 (*current_target.to_terminal_info) (arg, from_tty)
1226 /* Kill the inferior process. Make it go away. */
1228 extern void target_kill (void);
1230 /* Load an executable file into the target process. This is expected
1231 to not only bring new code into the target process, but also to
1232 update GDB's symbol tables to match.
1234 ARG contains command-line arguments, to be broken down with
1235 buildargv (). The first non-switch argument is the filename to
1236 load, FILE; the second is a number (as parsed by strtoul (..., ...,
1237 0)), which is an offset to apply to the load addresses of FILE's
1238 sections. The target may define switches, or other non-switch
1239 arguments, as it pleases. */
1241 extern void target_load (char *arg
, int from_tty
);
1243 /* Start an inferior process and set inferior_ptid to its pid.
1244 EXEC_FILE is the file to run.
1245 ALLARGS is a string containing the arguments to the program.
1246 ENV is the environment vector to pass. Errors reported with error().
1247 On VxWorks and various standalone systems, we ignore exec_file. */
1249 void target_create_inferior (char *exec_file
, char *args
,
1250 char **env
, int from_tty
);
1252 /* Some targets (such as ttrace-based HPUX) don't allow us to request
1253 notification of inferior events such as fork and vork immediately
1254 after the inferior is created. (This because of how gdb gets an
1255 inferior created via invoking a shell to do it. In such a scenario,
1256 if the shell init file has commands in it, the shell will fork and
1257 exec for each of those commands, and we will see each such fork
1260 Such targets will supply an appropriate definition for this function. */
1262 #define target_post_startup_inferior(ptid) \
1263 (*current_target.to_post_startup_inferior) (ptid)
1265 /* On some targets, we can catch an inferior fork or vfork event when
1266 it occurs. These functions insert/remove an already-created
1267 catchpoint for such events. They return 0 for success, 1 if the
1268 catchpoint type is not supported and -1 for failure. */
1270 #define target_insert_fork_catchpoint(pid) \
1271 (*current_target.to_insert_fork_catchpoint) (pid)
1273 #define target_remove_fork_catchpoint(pid) \
1274 (*current_target.to_remove_fork_catchpoint) (pid)
1276 #define target_insert_vfork_catchpoint(pid) \
1277 (*current_target.to_insert_vfork_catchpoint) (pid)
1279 #define target_remove_vfork_catchpoint(pid) \
1280 (*current_target.to_remove_vfork_catchpoint) (pid)
1282 /* If the inferior forks or vforks, this function will be called at
1283 the next resume in order to perform any bookkeeping and fiddling
1284 necessary to continue debugging either the parent or child, as
1285 requested, and releasing the other. Information about the fork
1286 or vfork event is available via get_last_target_status ().
1287 This function returns 1 if the inferior should not be resumed
1288 (i.e. there is another event pending). */
1290 int target_follow_fork (int follow_child
);
1292 /* On some targets, we can catch an inferior exec event when it
1293 occurs. These functions insert/remove an already-created
1294 catchpoint for such events. They return 0 for success, 1 if the
1295 catchpoint type is not supported and -1 for failure. */
1297 #define target_insert_exec_catchpoint(pid) \
1298 (*current_target.to_insert_exec_catchpoint) (pid)
1300 #define target_remove_exec_catchpoint(pid) \
1301 (*current_target.to_remove_exec_catchpoint) (pid)
1305 NEEDED is nonzero if any syscall catch (of any kind) is requested.
1306 If NEEDED is zero, it means the target can disable the mechanism to
1307 catch system calls because there are no more catchpoints of this type.
1309 ANY_COUNT is nonzero if a generic (filter-less) syscall catch is
1310 being requested. In this case, both TABLE_SIZE and TABLE should
1313 TABLE_SIZE is the number of elements in TABLE. It only matters if
1316 TABLE is an array of ints, indexed by syscall number. An element in
1317 this array is nonzero if that syscall should be caught. This argument
1318 only matters if ANY_COUNT is zero.
1320 Return 0 for success, 1 if syscall catchpoints are not supported or -1
1323 #define target_set_syscall_catchpoint(pid, needed, any_count, table_size, table) \
1324 (*current_target.to_set_syscall_catchpoint) (pid, needed, any_count, \
1327 /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the
1328 exit code of PID, if any. */
1330 #define target_has_exited(pid,wait_status,exit_status) \
1331 (*current_target.to_has_exited) (pid,wait_status,exit_status)
1333 /* The debugger has completed a blocking wait() call. There is now
1334 some process event that must be processed. This function should
1335 be defined by those targets that require the debugger to perform
1336 cleanup or internal state changes in response to the process event. */
1338 /* The inferior process has died. Do what is right. */
1340 void target_mourn_inferior (void);
1342 /* Does target have enough data to do a run or attach command? */
1344 #define target_can_run(t) \
1345 ((t)->to_can_run) ()
1347 /* Set list of signals to be handled in the target.
1349 PASS_SIGNALS is an array of size NSIG, indexed by target signal number
1350 (enum gdb_signal). For every signal whose entry in this array is
1351 non-zero, the target is allowed -but not required- to skip reporting
1352 arrival of the signal to the GDB core by returning from target_wait,
1353 and to pass the signal directly to the inferior instead.
1355 However, if the target is hardware single-stepping a thread that is
1356 about to receive a signal, it needs to be reported in any case, even
1357 if mentioned in a previous target_pass_signals call. */
1359 extern void target_pass_signals (int nsig
, unsigned char *pass_signals
);
1361 /* Set list of signals the target may pass to the inferior. This
1362 directly maps to the "handle SIGNAL pass/nopass" setting.
1364 PROGRAM_SIGNALS is an array of size NSIG, indexed by target signal
1365 number (enum gdb_signal). For every signal whose entry in this
1366 array is non-zero, the target is allowed to pass the signal to the
1367 inferior. Signals not present in the array shall be silently
1368 discarded. This does not influence whether to pass signals to the
1369 inferior as a result of a target_resume call. This is useful in
1370 scenarios where the target needs to decide whether to pass or not a
1371 signal to the inferior without GDB core involvement, such as for
1372 example, when detaching (as threads may have been suspended with
1373 pending signals not reported to GDB). */
1375 extern void target_program_signals (int nsig
, unsigned char *program_signals
);
1377 /* Check to see if a thread is still alive. */
1379 extern int target_thread_alive (ptid_t ptid
);
1381 /* Query for new threads and add them to the thread list. */
1383 extern void target_find_new_threads (void);
1385 /* Make target stop in a continuable fashion. (For instance, under
1386 Unix, this should act like SIGSTOP). This function is normally
1387 used by GUIs to implement a stop button. */
1389 extern void target_stop (ptid_t ptid
);
1391 /* Send the specified COMMAND to the target's monitor
1392 (shell,interpreter) for execution. The result of the query is
1393 placed in OUTBUF. */
1395 #define target_rcmd(command, outbuf) \
1396 (*current_target.to_rcmd) (command, outbuf)
1399 /* Does the target include all of memory, or only part of it? This
1400 determines whether we look up the target chain for other parts of
1401 memory if this target can't satisfy a request. */
1403 extern int target_has_all_memory_1 (void);
1404 #define target_has_all_memory target_has_all_memory_1 ()
1406 /* Does the target include memory? (Dummy targets don't.) */
1408 extern int target_has_memory_1 (void);
1409 #define target_has_memory target_has_memory_1 ()
1411 /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until
1412 we start a process.) */
1414 extern int target_has_stack_1 (void);
1415 #define target_has_stack target_has_stack_1 ()
1417 /* Does the target have registers? (Exec files don't.) */
1419 extern int target_has_registers_1 (void);
1420 #define target_has_registers target_has_registers_1 ()
1422 /* Does the target have execution? Can we make it jump (through
1423 hoops), or pop its stack a few times? This means that the current
1424 target is currently executing; for some targets, that's the same as
1425 whether or not the target is capable of execution, but there are
1426 also targets which can be current while not executing. In that
1427 case this will become true after target_create_inferior or
1430 extern int target_has_execution_1 (ptid_t
);
1432 /* Like target_has_execution_1, but always passes inferior_ptid. */
1434 extern int target_has_execution_current (void);
1436 #define target_has_execution target_has_execution_current ()
1438 /* Default implementations for process_stratum targets. Return true
1439 if there's a selected inferior, false otherwise. */
1441 extern int default_child_has_all_memory (struct target_ops
*ops
);
1442 extern int default_child_has_memory (struct target_ops
*ops
);
1443 extern int default_child_has_stack (struct target_ops
*ops
);
1444 extern int default_child_has_registers (struct target_ops
*ops
);
1445 extern int default_child_has_execution (struct target_ops
*ops
,
1448 /* Can the target support the debugger control of thread execution?
1449 Can it lock the thread scheduler? */
1451 #define target_can_lock_scheduler \
1452 (current_target.to_has_thread_control & tc_schedlock)
1454 /* Should the target enable async mode if it is supported? Temporary
1455 cludge until async mode is a strict superset of sync mode. */
1456 extern int target_async_permitted
;
1458 /* Can the target support asynchronous execution? */
1459 #define target_can_async_p() (current_target.to_can_async_p ())
1461 /* Is the target in asynchronous execution mode? */
1462 #define target_is_async_p() (current_target.to_is_async_p ())
1464 int target_supports_non_stop (void);
1466 /* Put the target in async mode with the specified callback function. */
1467 #define target_async(CALLBACK,CONTEXT) \
1468 (current_target.to_async ((CALLBACK), (CONTEXT)))
1470 #define target_execution_direction() \
1471 (current_target.to_execution_direction ())
1473 /* Converts a process id to a string. Usually, the string just contains
1474 `process xyz', but on some systems it may contain
1475 `process xyz thread abc'. */
1477 extern char *target_pid_to_str (ptid_t ptid
);
1479 extern char *normal_pid_to_str (ptid_t ptid
);
1481 /* Return a short string describing extra information about PID,
1482 e.g. "sleeping", "runnable", "running on LWP 3". Null return value
1485 #define target_extra_thread_info(TP) \
1486 (current_target.to_extra_thread_info (TP))
1488 /* Return the thread's name. A NULL result means that the target
1489 could not determine this thread's name. */
1491 extern char *target_thread_name (struct thread_info
*);
1493 /* Attempts to find the pathname of the executable file
1494 that was run to create a specified process.
1496 The process PID must be stopped when this operation is used.
1498 If the executable file cannot be determined, NULL is returned.
1500 Else, a pointer to a character string containing the pathname
1501 is returned. This string should be copied into a buffer by
1502 the client if the string will not be immediately used, or if
1505 #define target_pid_to_exec_file(pid) \
1506 (current_target.to_pid_to_exec_file) (pid)
1508 /* See the to_thread_architecture description in struct target_ops. */
1510 #define target_thread_architecture(ptid) \
1511 (current_target.to_thread_architecture (¤t_target, ptid))
1514 * Iterator function for target memory regions.
1515 * Calls a callback function once for each memory region 'mapped'
1516 * in the child process. Defined as a simple macro rather than
1517 * as a function macro so that it can be tested for nullity.
1520 #define target_find_memory_regions(FUNC, DATA) \
1521 (current_target.to_find_memory_regions) (FUNC, DATA)
1524 * Compose corefile .note section.
1527 #define target_make_corefile_notes(BFD, SIZE_P) \
1528 (current_target.to_make_corefile_notes) (BFD, SIZE_P)
1530 /* Bookmark interfaces. */
1531 #define target_get_bookmark(ARGS, FROM_TTY) \
1532 (current_target.to_get_bookmark) (ARGS, FROM_TTY)
1534 #define target_goto_bookmark(ARG, FROM_TTY) \
1535 (current_target.to_goto_bookmark) (ARG, FROM_TTY)
1537 /* Hardware watchpoint interfaces. */
1539 /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or
1540 write). Only the INFERIOR_PTID task is being queried. */
1542 #define target_stopped_by_watchpoint \
1543 (*current_target.to_stopped_by_watchpoint)
1545 /* Non-zero if we have steppable watchpoints */
1547 #define target_have_steppable_watchpoint \
1548 (current_target.to_have_steppable_watchpoint)
1550 /* Non-zero if we have continuable watchpoints */
1552 #define target_have_continuable_watchpoint \
1553 (current_target.to_have_continuable_watchpoint)
1555 /* Provide defaults for hardware watchpoint functions. */
1557 /* If the *_hw_beakpoint functions have not been defined
1558 elsewhere use the definitions in the target vector. */
1560 /* Returns non-zero if we can set a hardware watchpoint of type TYPE. TYPE is
1561 one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or
1562 bp_hardware_breakpoint. CNT is the number of such watchpoints used so far
1563 (including this one?). OTHERTYPE is who knows what... */
1565 #define target_can_use_hardware_watchpoint(TYPE,CNT,OTHERTYPE) \
1566 (*current_target.to_can_use_hw_breakpoint) (TYPE, CNT, OTHERTYPE);
1568 /* Returns the number of debug registers needed to watch the given
1569 memory region, or zero if not supported. */
1571 #define target_region_ok_for_hw_watchpoint(addr, len) \
1572 (*current_target.to_region_ok_for_hw_watchpoint) (addr, len)
1575 /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes.
1576 TYPE is 0 for write, 1 for read, and 2 for read/write accesses.
1577 COND is the expression for its condition, or NULL if there's none.
1578 Returns 0 for success, 1 if the watchpoint type is not supported,
1581 #define target_insert_watchpoint(addr, len, type, cond) \
1582 (*current_target.to_insert_watchpoint) (addr, len, type, cond)
1584 #define target_remove_watchpoint(addr, len, type, cond) \
1585 (*current_target.to_remove_watchpoint) (addr, len, type, cond)
1587 /* Insert a new masked watchpoint at ADDR using the mask MASK.
1588 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
1589 or hw_access for an access watchpoint. Returns 0 for success, 1 if
1590 masked watchpoints are not supported, -1 for failure. */
1592 extern int target_insert_mask_watchpoint (CORE_ADDR
, CORE_ADDR
, int);
1594 /* Remove a masked watchpoint at ADDR with the mask MASK.
1595 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
1596 or hw_access for an access watchpoint. Returns 0 for success, non-zero
1599 extern int target_remove_mask_watchpoint (CORE_ADDR
, CORE_ADDR
, int);
1601 #define target_insert_hw_breakpoint(gdbarch, bp_tgt) \
1602 (*current_target.to_insert_hw_breakpoint) (gdbarch, bp_tgt)
1604 #define target_remove_hw_breakpoint(gdbarch, bp_tgt) \
1605 (*current_target.to_remove_hw_breakpoint) (gdbarch, bp_tgt)
1607 /* Return number of debug registers needed for a ranged breakpoint,
1608 or -1 if ranged breakpoints are not supported. */
1610 extern int target_ranged_break_num_registers (void);
1612 /* Return non-zero if target knows the data address which triggered this
1613 target_stopped_by_watchpoint, in such case place it to *ADDR_P. Only the
1614 INFERIOR_PTID task is being queried. */
1615 #define target_stopped_data_address(target, addr_p) \
1616 (*target.to_stopped_data_address) (target, addr_p)
1618 /* Return non-zero if ADDR is within the range of a watchpoint spanning
1619 LENGTH bytes beginning at START. */
1620 #define target_watchpoint_addr_within_range(target, addr, start, length) \
1621 (*target.to_watchpoint_addr_within_range) (target, addr, start, length)
1623 /* Return non-zero if the target is capable of using hardware to evaluate
1624 the condition expression. In this case, if the condition is false when
1625 the watched memory location changes, execution may continue without the
1626 debugger being notified.
1628 Due to limitations in the hardware implementation, it may be capable of
1629 avoiding triggering the watchpoint in some cases where the condition
1630 expression is false, but may report some false positives as well.
1631 For this reason, GDB will still evaluate the condition expression when
1632 the watchpoint triggers. */
1633 #define target_can_accel_watchpoint_condition(addr, len, type, cond) \
1634 (*current_target.to_can_accel_watchpoint_condition) (addr, len, type, cond)
1636 /* Return number of debug registers needed for a masked watchpoint,
1637 -1 if masked watchpoints are not supported or -2 if the given address
1638 and mask combination cannot be used. */
1640 extern int target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
);
1642 /* Target can execute in reverse? */
1643 #define target_can_execute_reverse \
1644 (current_target.to_can_execute_reverse ? \
1645 current_target.to_can_execute_reverse () : 0)
1647 extern const struct target_desc
*target_read_description (struct target_ops
*);
1649 #define target_get_ada_task_ptid(lwp, tid) \
1650 (*current_target.to_get_ada_task_ptid) (lwp,tid)
1652 /* Utility implementation of searching memory. */
1653 extern int simple_search_memory (struct target_ops
* ops
,
1654 CORE_ADDR start_addr
,
1655 ULONGEST search_space_len
,
1656 const gdb_byte
*pattern
,
1657 ULONGEST pattern_len
,
1658 CORE_ADDR
*found_addrp
);
1660 /* Main entry point for searching memory. */
1661 extern int target_search_memory (CORE_ADDR start_addr
,
1662 ULONGEST search_space_len
,
1663 const gdb_byte
*pattern
,
1664 ULONGEST pattern_len
,
1665 CORE_ADDR
*found_addrp
);
1667 /* Target file operations. */
1669 /* Open FILENAME on the target, using FLAGS and MODE. Return a
1670 target file descriptor, or -1 if an error occurs (and set
1672 extern int target_fileio_open (const char *filename
, int flags
, int mode
,
1675 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
1676 Return the number of bytes written, or -1 if an error occurs
1677 (and set *TARGET_ERRNO). */
1678 extern int target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
1679 ULONGEST offset
, int *target_errno
);
1681 /* Read up to LEN bytes FD on the target into READ_BUF.
1682 Return the number of bytes read, or -1 if an error occurs
1683 (and set *TARGET_ERRNO). */
1684 extern int target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
1685 ULONGEST offset
, int *target_errno
);
1687 /* Close FD on the target. Return 0, or -1 if an error occurs
1688 (and set *TARGET_ERRNO). */
1689 extern int target_fileio_close (int fd
, int *target_errno
);
1691 /* Unlink FILENAME on the target. Return 0, or -1 if an error
1692 occurs (and set *TARGET_ERRNO). */
1693 extern int target_fileio_unlink (const char *filename
, int *target_errno
);
1695 /* Read value of symbolic link FILENAME on the target. Return a
1696 null-terminated string allocated via xmalloc, or NULL if an error
1697 occurs (and set *TARGET_ERRNO). */
1698 extern char *target_fileio_readlink (const char *filename
, int *target_errno
);
1700 /* Read target file FILENAME. The return value will be -1 if the transfer
1701 fails or is not supported; 0 if the object is empty; or the length
1702 of the object otherwise. If a positive value is returned, a
1703 sufficiently large buffer will be allocated using xmalloc and
1704 returned in *BUF_P containing the contents of the object.
1706 This method should be used for objects sufficiently small to store
1707 in a single xmalloc'd buffer, when no fixed bound on the object's
1708 size is known in advance. */
1709 extern LONGEST
target_fileio_read_alloc (const char *filename
,
1712 /* Read target file FILENAME. The result is NUL-terminated and
1713 returned as a string, allocated using xmalloc. If an error occurs
1714 or the transfer is unsupported, NULL is returned. Empty objects
1715 are returned as allocated but empty strings. A warning is issued
1716 if the result contains any embedded NUL bytes. */
1717 extern char *target_fileio_read_stralloc (const char *filename
);
1720 /* Tracepoint-related operations. */
1722 #define target_trace_init() \
1723 (*current_target.to_trace_init) ()
1725 #define target_download_tracepoint(t) \
1726 (*current_target.to_download_tracepoint) (t)
1728 #define target_can_download_tracepoint() \
1729 (*current_target.to_can_download_tracepoint) ()
1731 #define target_download_trace_state_variable(tsv) \
1732 (*current_target.to_download_trace_state_variable) (tsv)
1734 #define target_enable_tracepoint(loc) \
1735 (*current_target.to_enable_tracepoint) (loc)
1737 #define target_disable_tracepoint(loc) \
1738 (*current_target.to_disable_tracepoint) (loc)
1740 #define target_trace_start() \
1741 (*current_target.to_trace_start) ()
1743 #define target_trace_set_readonly_regions() \
1744 (*current_target.to_trace_set_readonly_regions) ()
1746 #define target_get_trace_status(ts) \
1747 (*current_target.to_get_trace_status) (ts)
1749 #define target_get_tracepoint_status(tp,utp) \
1750 (*current_target.to_get_tracepoint_status) (tp, utp)
1752 #define target_trace_stop() \
1753 (*current_target.to_trace_stop) ()
1755 #define target_trace_find(type,num,addr1,addr2,tpp) \
1756 (*current_target.to_trace_find) ((type), (num), (addr1), (addr2), (tpp))
1758 #define target_get_trace_state_variable_value(tsv,val) \
1759 (*current_target.to_get_trace_state_variable_value) ((tsv), (val))
1761 #define target_save_trace_data(filename) \
1762 (*current_target.to_save_trace_data) (filename)
1764 #define target_upload_tracepoints(utpp) \
1765 (*current_target.to_upload_tracepoints) (utpp)
1767 #define target_upload_trace_state_variables(utsvp) \
1768 (*current_target.to_upload_trace_state_variables) (utsvp)
1770 #define target_get_raw_trace_data(buf,offset,len) \
1771 (*current_target.to_get_raw_trace_data) ((buf), (offset), (len))
1773 #define target_get_min_fast_tracepoint_insn_len() \
1774 (*current_target.to_get_min_fast_tracepoint_insn_len) ()
1776 #define target_set_disconnected_tracing(val) \
1777 (*current_target.to_set_disconnected_tracing) (val)
1779 #define target_set_circular_trace_buffer(val) \
1780 (*current_target.to_set_circular_trace_buffer) (val)
1782 #define target_set_trace_buffer_size(val) \
1783 (*current_target.to_set_trace_buffer_size) (val)
1785 #define target_set_trace_notes(user,notes,stopnotes) \
1786 (*current_target.to_set_trace_notes) ((user), (notes), (stopnotes))
1788 #define target_get_tib_address(ptid, addr) \
1789 (*current_target.to_get_tib_address) ((ptid), (addr))
1791 #define target_set_permissions() \
1792 (*current_target.to_set_permissions) ()
1794 #define target_static_tracepoint_marker_at(addr, marker) \
1795 (*current_target.to_static_tracepoint_marker_at) (addr, marker)
1797 #define target_static_tracepoint_markers_by_strid(marker_id) \
1798 (*current_target.to_static_tracepoint_markers_by_strid) (marker_id)
1800 #define target_traceframe_info() \
1801 (*current_target.to_traceframe_info) ()
1803 #define target_use_agent(use) \
1804 (*current_target.to_use_agent) (use)
1806 #define target_can_use_agent() \
1807 (*current_target.to_can_use_agent) ()
1809 /* Command logging facility. */
1811 #define target_log_command(p) \
1813 if (current_target.to_log_command) \
1814 (*current_target.to_log_command) (p); \
1818 extern int target_core_of_thread (ptid_t ptid
);
1820 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range matches
1821 the contents of [DATA,DATA+SIZE). Returns 1 if there's a match, 0
1822 if there's a mismatch, and -1 if an error is encountered while
1823 reading memory. Throws an error if the functionality is found not
1824 to be supported by the current target. */
1825 int target_verify_memory (const gdb_byte
*data
,
1826 CORE_ADDR memaddr
, ULONGEST size
);
1828 /* Routines for maintenance of the target structures...
1830 add_target: Add a target to the list of all possible targets.
1832 push_target: Make this target the top of the stack of currently used
1833 targets, within its particular stratum of the stack. Result
1834 is 0 if now atop the stack, nonzero if not on top (maybe
1837 unpush_target: Remove this from the stack of currently used targets,
1838 no matter where it is on the list. Returns 0 if no
1839 change, 1 if removed from stack.
1841 pop_target: Remove the top thing on the stack of current targets. */
1843 extern void add_target (struct target_ops
*);
1845 extern void add_target_with_completer (struct target_ops
*t
,
1846 completer_ftype
*completer
);
1848 /* Adds a command ALIAS for target T and marks it deprecated. This is useful
1849 for maintaining backwards compatibility when renaming targets. */
1851 extern void add_deprecated_target_alias (struct target_ops
*t
, char *alias
);
1853 extern void push_target (struct target_ops
*);
1855 extern int unpush_target (struct target_ops
*);
1857 extern void target_pre_inferior (int);
1859 extern void target_preopen (int);
1861 extern void pop_target (void);
1863 /* Does whatever cleanup is required to get rid of all pushed targets. */
1864 extern void pop_all_targets (void);
1866 /* Like pop_all_targets, but pops only targets whose stratum is
1867 strictly above ABOVE_STRATUM. */
1868 extern void pop_all_targets_above (enum strata above_stratum
);
1870 extern int target_is_pushed (struct target_ops
*t
);
1872 extern CORE_ADDR
target_translate_tls_address (struct objfile
*objfile
,
1875 /* Struct target_section maps address ranges to file sections. It is
1876 mostly used with BFD files, but can be used without (e.g. for handling
1877 raw disks, or files not in formats handled by BFD). */
1879 struct target_section
1881 CORE_ADDR addr
; /* Lowest address in section */
1882 CORE_ADDR endaddr
; /* 1+highest address in section */
1884 struct bfd_section
*the_bfd_section
;
1886 /* A given BFD may appear multiple times in the target section
1887 list, so each BFD is associated with a given key. The key is
1888 just some convenient pointer that can be used to differentiate
1889 the BFDs. These are managed only by convention. */
1892 bfd
*bfd
; /* BFD file pointer */
1895 /* Holds an array of target sections. Defined by [SECTIONS..SECTIONS_END[. */
1897 struct target_section_table
1899 struct target_section
*sections
;
1900 struct target_section
*sections_end
;
1903 /* Return the "section" containing the specified address. */
1904 struct target_section
*target_section_by_addr (struct target_ops
*target
,
1907 /* Return the target section table this target (or the targets
1908 beneath) currently manipulate. */
1910 extern struct target_section_table
*target_get_section_table
1911 (struct target_ops
*target
);
1913 /* From mem-break.c */
1915 extern int memory_remove_breakpoint (struct gdbarch
*,
1916 struct bp_target_info
*);
1918 extern int memory_insert_breakpoint (struct gdbarch
*,
1919 struct bp_target_info
*);
1921 extern int default_memory_remove_breakpoint (struct gdbarch
*,
1922 struct bp_target_info
*);
1924 extern int default_memory_insert_breakpoint (struct gdbarch
*,
1925 struct bp_target_info
*);
1930 extern void initialize_targets (void);
1932 extern void noprocess (void) ATTRIBUTE_NORETURN
;
1934 extern void target_require_runnable (void);
1936 extern void find_default_attach (struct target_ops
*, char *, int);
1938 extern void find_default_create_inferior (struct target_ops
*,
1939 char *, char *, char **, int);
1941 extern struct target_ops
*find_run_target (void);
1943 extern struct target_ops
*find_target_beneath (struct target_ops
*);
1945 /* Read OS data object of type TYPE from the target, and return it in
1946 XML format. The result is NUL-terminated and returned as a string,
1947 allocated using xmalloc. If an error occurs or the transfer is
1948 unsupported, NULL is returned. Empty objects are returned as
1949 allocated but empty strings. */
1951 extern char *target_get_osdata (const char *type
);
1954 /* Stuff that should be shared among the various remote targets. */
1956 /* Debugging level. 0 is off, and non-zero values mean to print some debug
1957 information (higher values, more information). */
1958 extern int remote_debug
;
1960 /* Speed in bits per second, or -1 which means don't mess with the speed. */
1961 extern int baud_rate
;
1962 /* Timeout limit for response from target. */
1963 extern int remote_timeout
;
1967 /* Set the show memory breakpoints mode to show, and installs a cleanup
1968 to restore it back to the current value. */
1969 extern struct cleanup
*make_show_memory_breakpoints_cleanup (int show
);
1971 extern int may_write_registers
;
1972 extern int may_write_memory
;
1973 extern int may_insert_breakpoints
;
1974 extern int may_insert_tracepoints
;
1975 extern int may_insert_fast_tracepoints
;
1976 extern int may_stop
;
1978 extern void update_target_permissions (void);
1981 /* Imported from machine dependent code. */
1983 /* Blank target vector entries are initialized to target_ignore. */
1984 void target_ignore (void);
1986 /* See to_supports_btrace in struct target_ops. */
1987 extern int target_supports_btrace (void);
1989 /* See to_enable_btrace in struct target_ops. */
1990 extern struct btrace_target_info
*target_enable_btrace (ptid_t ptid
);
1992 /* See to_disable_btrace in struct target_ops. */
1993 extern void target_disable_btrace (struct btrace_target_info
*btinfo
);
1995 /* See to_teardown_btrace in struct target_ops. */
1996 extern void target_teardown_btrace (struct btrace_target_info
*btinfo
);
1998 /* See to_read_btrace in struct target_ops. */
1999 extern VEC (btrace_block_s
) *target_read_btrace (struct btrace_target_info
*,
2000 enum btrace_read_type
);
2002 /* See to_stop_recording in struct target_ops. */
2003 extern void target_stop_recording (void);
2005 /* See to_info_record in struct target_ops. */
2006 extern void target_info_record (void);
2008 /* See to_save_record in struct target_ops. */
2009 extern void target_save_record (char *filename
);
2011 /* Query if the target supports deleting the execution log. */
2012 extern int target_supports_delete_record (void);
2014 /* See to_delete_record in struct target_ops. */
2015 extern void target_delete_record (void);
2017 /* See to_record_is_replaying in struct target_ops. */
2018 extern int target_record_is_replaying (void);
2020 /* See to_goto_record_begin in struct target_ops. */
2021 extern void target_goto_record_begin (void);
2023 /* See to_goto_record_end in struct target_ops. */
2024 extern void target_goto_record_end (void);
2026 /* See to_goto_record in struct target_ops. */
2027 extern void target_goto_record (ULONGEST insn
);
2029 /* See to_insn_history. */
2030 extern void target_insn_history (int size
, int flags
);
2032 /* See to_insn_history_from. */
2033 extern void target_insn_history_from (ULONGEST from
, int size
, int flags
);
2035 /* See to_insn_history_range. */
2036 extern void target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
);
2038 /* See to_call_history. */
2039 extern void target_call_history (int size
, int flags
);
2041 /* See to_call_history_from. */
2042 extern void target_call_history_from (ULONGEST begin
, int size
, int flags
);
2044 /* See to_call_history_range. */
2045 extern void target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
);
2047 #endif /* !defined (TARGET_H) */