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"
69 dummy_stratum
, /* The lowest of the low */
70 file_stratum
, /* Executable files, etc */
71 process_stratum
, /* Executing processes or core dump files */
72 thread_stratum
, /* Executing threads */
73 record_stratum
, /* Support record debugging */
74 arch_stratum
/* Architecture overrides */
77 enum thread_control_capabilities
79 tc_none
= 0, /* Default: can't control thread execution. */
80 tc_schedlock
= 1, /* Can lock the thread scheduler. */
83 /* Stuff for target_wait. */
85 /* Generally, what has the program done? */
88 /* The program has exited. The exit status is in value.integer. */
89 TARGET_WAITKIND_EXITED
,
91 /* The program has stopped with a signal. Which signal is in
93 TARGET_WAITKIND_STOPPED
,
95 /* The program has terminated with a signal. Which signal is in
97 TARGET_WAITKIND_SIGNALLED
,
99 /* The program is letting us know that it dynamically loaded something
100 (e.g. it called load(2) on AIX). */
101 TARGET_WAITKIND_LOADED
,
103 /* The program has forked. A "related" process' PTID is in
104 value.related_pid. I.e., if the child forks, value.related_pid
105 is the parent's ID. */
107 TARGET_WAITKIND_FORKED
,
109 /* The program has vforked. A "related" process's PTID is in
110 value.related_pid. */
112 TARGET_WAITKIND_VFORKED
,
114 /* The program has exec'ed a new executable file. The new file's
115 pathname is pointed to by value.execd_pathname. */
117 TARGET_WAITKIND_EXECD
,
119 /* The program had previously vforked, and now the child is done
120 with the shared memory region, because it exec'ed or exited.
121 Note that the event is reported to the vfork parent. This is
122 only used if GDB did not stay attached to the vfork child,
123 otherwise, a TARGET_WAITKIND_EXECD or
124 TARGET_WAITKIND_EXIT|SIGNALLED event associated with the child
125 has the same effect. */
126 TARGET_WAITKIND_VFORK_DONE
,
128 /* The program has entered or returned from a system call. On
129 HP-UX, this is used in the hardware watchpoint implementation.
130 The syscall's unique integer ID number is in value.syscall_id. */
132 TARGET_WAITKIND_SYSCALL_ENTRY
,
133 TARGET_WAITKIND_SYSCALL_RETURN
,
135 /* Nothing happened, but we stopped anyway. This perhaps should be handled
136 within target_wait, but I'm not sure target_wait should be resuming the
138 TARGET_WAITKIND_SPURIOUS
,
140 /* An event has occured, but we should wait again.
141 Remote_async_wait() returns this when there is an event
142 on the inferior, but the rest of the world is not interested in
143 it. The inferior has not stopped, but has just sent some output
144 to the console, for instance. In this case, we want to go back
145 to the event loop and wait there for another event from the
146 inferior, rather than being stuck in the remote_async_wait()
147 function. sThis way the event loop is responsive to other events,
148 like for instance the user typing. */
149 TARGET_WAITKIND_IGNORE
,
151 /* The target has run out of history information,
152 and cannot run backward any further. */
153 TARGET_WAITKIND_NO_HISTORY
,
155 /* There are no resumed children left in the program. */
156 TARGET_WAITKIND_NO_RESUMED
159 struct target_waitstatus
161 enum target_waitkind kind
;
163 /* Forked child pid, execd pathname, exit status, signal number or
170 char *execd_pathname
;
176 /* Options that can be passed to target_wait. */
178 /* Return immediately if there's no event already queued. If this
179 options is not requested, target_wait blocks waiting for an
181 #define TARGET_WNOHANG 1
183 /* The structure below stores information about a system call.
184 It is basically used in the "catch syscall" command, and in
185 every function that gives information about a system call.
187 It's also good to mention that its fields represent everything
188 that we currently know about a syscall in GDB. */
191 /* The syscall number. */
194 /* The syscall name. */
198 /* Return a pretty printed form of target_waitstatus.
199 Space for the result is malloc'd, caller must free. */
200 extern char *target_waitstatus_to_string (const struct target_waitstatus
*);
202 /* Return a pretty printed form of TARGET_OPTIONS.
203 Space for the result is malloc'd, caller must free. */
204 extern char *target_options_to_string (int target_options
);
206 /* Possible types of events that the inferior handler will have to
208 enum inferior_event_type
210 /* Process a normal inferior event which will result in target_wait
213 /* We are called because a timer went off. */
215 /* We are called to do stuff after the inferior stops. */
217 /* We are called to do some stuff after the inferior stops, but we
218 are expected to reenter the proceed() and
219 handle_inferior_event() functions. This is used only in case of
220 'step n' like commands. */
224 /* Target objects which can be transfered using target_read,
225 target_write, et cetera. */
229 /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */
231 /* SPU target specific transfer. See "spu-tdep.c". */
233 /* Transfer up-to LEN bytes of memory starting at OFFSET. */
234 TARGET_OBJECT_MEMORY
,
235 /* Memory, avoiding GDB's data cache and trusting the executable.
236 Target implementations of to_xfer_partial never need to handle
237 this object, and most callers should not use it. */
238 TARGET_OBJECT_RAW_MEMORY
,
239 /* Memory known to be part of the target's stack. This is cached even
240 if it is not in a region marked as such, since it is known to be
242 TARGET_OBJECT_STACK_MEMORY
,
243 /* Kernel Unwind Table. See "ia64-tdep.c". */
244 TARGET_OBJECT_UNWIND_TABLE
,
245 /* Transfer auxilliary vector. */
247 /* StackGhost cookie. See "sparc-tdep.c". */
248 TARGET_OBJECT_WCOOKIE
,
249 /* Target memory map in XML format. */
250 TARGET_OBJECT_MEMORY_MAP
,
251 /* Flash memory. This object can be used to write contents to
252 a previously erased flash memory. Using it without erasing
253 flash can have unexpected results. Addresses are physical
254 address on target, and not relative to flash start. */
256 /* Available target-specific features, e.g. registers and coprocessors.
257 See "target-descriptions.c". ANNEX should never be empty. */
258 TARGET_OBJECT_AVAILABLE_FEATURES
,
259 /* Currently loaded libraries, in XML format. */
260 TARGET_OBJECT_LIBRARIES
,
261 /* Currently loaded libraries specific for SVR4 systems, in XML format. */
262 TARGET_OBJECT_LIBRARIES_SVR4
,
263 /* Get OS specific data. The ANNEX specifies the type (running
264 processes, etc.). The data being transfered is expected to follow
265 the DTD specified in features/osdata.dtd. */
266 TARGET_OBJECT_OSDATA
,
267 /* Extra signal info. Usually the contents of `siginfo_t' on unix
269 TARGET_OBJECT_SIGNAL_INFO
,
270 /* The list of threads that are being debugged. */
271 TARGET_OBJECT_THREADS
,
272 /* Collected static trace data. */
273 TARGET_OBJECT_STATIC_TRACE_DATA
,
274 /* The HP-UX registers (those that can be obtained or modified by using
275 the TT_LWP_RUREGS/TT_LWP_WUREGS ttrace requests). */
276 TARGET_OBJECT_HPUX_UREGS
,
277 /* The HP-UX shared library linkage pointer. ANNEX should be a string
278 image of the code address whose linkage pointer we are looking for.
280 The size of the data transfered is always 8 bytes (the size of an
282 TARGET_OBJECT_HPUX_SOLIB_GOT
,
283 /* Traceframe info, in XML format. */
284 TARGET_OBJECT_TRACEFRAME_INFO
,
285 /* Load maps for FDPIC systems. */
287 /* Darwin dynamic linker info data. */
288 TARGET_OBJECT_DARWIN_DYLD_INFO
,
289 /* OpenVMS Unwind Information Block. */
290 TARGET_OBJECT_OPENVMS_UIB
,
291 /* Branch trace data, in XML format. */
293 /* Possible future objects: TARGET_OBJECT_FILE, ... */
296 /* Enumeration of the kinds of traceframe searches that a target may
297 be able to perform. */
308 typedef struct static_tracepoint_marker
*static_tracepoint_marker_p
;
309 DEF_VEC_P(static_tracepoint_marker_p
);
311 /* Request that OPS transfer up to LEN 8-bit bytes of the target's
312 OBJECT. The OFFSET, for a seekable object, specifies the
313 starting point. The ANNEX can be used to provide additional
314 data-specific information to the target.
316 Return the number of bytes actually transfered, or -1 if the
317 transfer is not supported or otherwise fails. Return of a positive
318 value less than LEN indicates that no further transfer is possible.
319 Unlike the raw to_xfer_partial interface, callers of these
320 functions do not need to retry partial transfers. */
322 extern LONGEST
target_read (struct target_ops
*ops
,
323 enum target_object object
,
324 const char *annex
, gdb_byte
*buf
,
325 ULONGEST offset
, LONGEST len
);
327 struct memory_read_result
329 /* First address that was read. */
331 /* Past-the-end address. */
336 typedef struct memory_read_result memory_read_result_s
;
337 DEF_VEC_O(memory_read_result_s
);
339 extern void free_memory_read_result_vector (void *);
341 extern VEC(memory_read_result_s
)* read_memory_robust (struct target_ops
*ops
,
345 extern LONGEST
target_write (struct target_ops
*ops
,
346 enum target_object object
,
347 const char *annex
, const gdb_byte
*buf
,
348 ULONGEST offset
, LONGEST len
);
350 /* Similar to target_write, except that it also calls PROGRESS with
351 the number of bytes written and the opaque BATON after every
352 successful partial write (and before the first write). This is
353 useful for progress reporting and user interaction while writing
354 data. To abort the transfer, the progress callback can throw an
357 LONGEST
target_write_with_progress (struct target_ops
*ops
,
358 enum target_object object
,
359 const char *annex
, const gdb_byte
*buf
,
360 ULONGEST offset
, LONGEST len
,
361 void (*progress
) (ULONGEST
, void *),
364 /* Wrapper to perform a full read of unknown size. OBJECT/ANNEX will
365 be read using OPS. The return value will be -1 if the transfer
366 fails or is not supported; 0 if the object is empty; or the length
367 of the object otherwise. If a positive value is returned, a
368 sufficiently large buffer will be allocated using xmalloc and
369 returned in *BUF_P containing the contents of the object.
371 This method should be used for objects sufficiently small to store
372 in a single xmalloc'd buffer, when no fixed bound on the object's
373 size is known in advance. Don't try to read TARGET_OBJECT_MEMORY
374 through this function. */
376 extern LONGEST
target_read_alloc (struct target_ops
*ops
,
377 enum target_object object
,
378 const char *annex
, gdb_byte
**buf_p
);
380 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
381 returned as a string, allocated using xmalloc. If an error occurs
382 or the transfer is unsupported, NULL is returned. Empty objects
383 are returned as allocated but empty strings. A warning is issued
384 if the result contains any embedded NUL bytes. */
386 extern char *target_read_stralloc (struct target_ops
*ops
,
387 enum target_object object
,
390 /* Wrappers to target read/write that perform memory transfers. They
391 throw an error if the memory transfer fails.
393 NOTE: cagney/2003-10-23: The naming schema is lifted from
394 "frame.h". The parameter order is lifted from get_frame_memory,
395 which in turn lifted it from read_memory. */
397 extern void get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
,
398 gdb_byte
*buf
, LONGEST len
);
399 extern ULONGEST
get_target_memory_unsigned (struct target_ops
*ops
,
400 CORE_ADDR addr
, int len
,
401 enum bfd_endian byte_order
);
403 struct thread_info
; /* fwd decl for parameter list below: */
407 struct target_ops
*beneath
; /* To the target under this one. */
408 char *to_shortname
; /* Name this target type */
409 char *to_longname
; /* Name for printing */
410 char *to_doc
; /* Documentation. Does not include trailing
411 newline, and starts with a one-line descrip-
412 tion (probably similar to to_longname). */
413 /* Per-target scratch pad. */
415 /* The open routine takes the rest of the parameters from the
416 command, and (if successful) pushes a new target onto the
417 stack. Targets should supply this routine, if only to provide
419 void (*to_open
) (char *, int);
420 /* Old targets with a static target vector provide "to_close".
421 New re-entrant targets provide "to_xclose" and that is expected
422 to xfree everything (including the "struct target_ops"). */
423 void (*to_xclose
) (struct target_ops
*targ
, int quitting
);
424 void (*to_close
) (int);
425 void (*to_attach
) (struct target_ops
*ops
, char *, int);
426 void (*to_post_attach
) (int);
427 void (*to_detach
) (struct target_ops
*ops
, char *, int);
428 void (*to_disconnect
) (struct target_ops
*, char *, int);
429 void (*to_resume
) (struct target_ops
*, ptid_t
, int, enum gdb_signal
);
430 ptid_t (*to_wait
) (struct target_ops
*,
431 ptid_t
, struct target_waitstatus
*, int);
432 void (*to_fetch_registers
) (struct target_ops
*, struct regcache
*, int);
433 void (*to_store_registers
) (struct target_ops
*, struct regcache
*, int);
434 void (*to_prepare_to_store
) (struct regcache
*);
436 /* Transfer LEN bytes of memory between GDB address MYADDR and
437 target address MEMADDR. If WRITE, transfer them to the target, else
438 transfer them from the target. TARGET is the target from which we
441 Return value, N, is one of the following:
443 0 means that we can't handle this. If errno has been set, it is the
444 error which prevented us from doing it (FIXME: What about bfd_error?).
446 positive (call it N) means that we have transferred N bytes
447 starting at MEMADDR. We might be able to handle more bytes
448 beyond this length, but no promises.
450 negative (call its absolute value N) means that we cannot
451 transfer right at MEMADDR, but we could transfer at least
452 something at MEMADDR + N.
454 NOTE: cagney/2004-10-01: This has been entirely superseeded by
455 to_xfer_partial and inferior inheritance. */
457 int (*deprecated_xfer_memory
) (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
459 struct mem_attrib
*attrib
,
460 struct target_ops
*target
);
462 void (*to_files_info
) (struct target_ops
*);
463 int (*to_insert_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
464 int (*to_remove_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
465 int (*to_can_use_hw_breakpoint
) (int, int, int);
466 int (*to_ranged_break_num_registers
) (struct target_ops
*);
467 int (*to_insert_hw_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
468 int (*to_remove_hw_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
470 /* Documentation of what the two routines below are expected to do is
471 provided with the corresponding target_* macros. */
472 int (*to_remove_watchpoint
) (CORE_ADDR
, int, int, struct expression
*);
473 int (*to_insert_watchpoint
) (CORE_ADDR
, int, int, struct expression
*);
475 int (*to_insert_mask_watchpoint
) (struct target_ops
*,
476 CORE_ADDR
, CORE_ADDR
, int);
477 int (*to_remove_mask_watchpoint
) (struct target_ops
*,
478 CORE_ADDR
, CORE_ADDR
, int);
479 int (*to_stopped_by_watchpoint
) (void);
480 int to_have_steppable_watchpoint
;
481 int to_have_continuable_watchpoint
;
482 int (*to_stopped_data_address
) (struct target_ops
*, CORE_ADDR
*);
483 int (*to_watchpoint_addr_within_range
) (struct target_ops
*,
484 CORE_ADDR
, CORE_ADDR
, int);
486 /* Documentation of this routine is provided with the corresponding
488 int (*to_region_ok_for_hw_watchpoint
) (CORE_ADDR
, int);
490 int (*to_can_accel_watchpoint_condition
) (CORE_ADDR
, int, int,
491 struct expression
*);
492 int (*to_masked_watch_num_registers
) (struct target_ops
*,
493 CORE_ADDR
, CORE_ADDR
);
494 void (*to_terminal_init
) (void);
495 void (*to_terminal_inferior
) (void);
496 void (*to_terminal_ours_for_output
) (void);
497 void (*to_terminal_ours
) (void);
498 void (*to_terminal_save_ours
) (void);
499 void (*to_terminal_info
) (char *, int);
500 void (*to_kill
) (struct target_ops
*);
501 void (*to_load
) (char *, int);
502 void (*to_create_inferior
) (struct target_ops
*,
503 char *, char *, char **, int);
504 void (*to_post_startup_inferior
) (ptid_t
);
505 int (*to_insert_fork_catchpoint
) (int);
506 int (*to_remove_fork_catchpoint
) (int);
507 int (*to_insert_vfork_catchpoint
) (int);
508 int (*to_remove_vfork_catchpoint
) (int);
509 int (*to_follow_fork
) (struct target_ops
*, int);
510 int (*to_insert_exec_catchpoint
) (int);
511 int (*to_remove_exec_catchpoint
) (int);
512 int (*to_set_syscall_catchpoint
) (int, int, int, int, int *);
513 int (*to_has_exited
) (int, int, int *);
514 void (*to_mourn_inferior
) (struct target_ops
*);
515 int (*to_can_run
) (void);
517 /* Documentation of this routine is provided with the corresponding
519 void (*to_pass_signals
) (int, unsigned char *);
521 /* Documentation of this routine is provided with the
522 corresponding target_* function. */
523 void (*to_program_signals
) (int, unsigned char *);
525 int (*to_thread_alive
) (struct target_ops
*, ptid_t ptid
);
526 void (*to_find_new_threads
) (struct target_ops
*);
527 char *(*to_pid_to_str
) (struct target_ops
*, ptid_t
);
528 char *(*to_extra_thread_info
) (struct thread_info
*);
529 char *(*to_thread_name
) (struct thread_info
*);
530 void (*to_stop
) (ptid_t
);
531 void (*to_rcmd
) (char *command
, struct ui_file
*output
);
532 char *(*to_pid_to_exec_file
) (int pid
);
533 void (*to_log_command
) (const char *);
534 struct target_section_table
*(*to_get_section_table
) (struct target_ops
*);
535 enum strata to_stratum
;
536 int (*to_has_all_memory
) (struct target_ops
*);
537 int (*to_has_memory
) (struct target_ops
*);
538 int (*to_has_stack
) (struct target_ops
*);
539 int (*to_has_registers
) (struct target_ops
*);
540 int (*to_has_execution
) (struct target_ops
*, ptid_t
);
541 int to_has_thread_control
; /* control thread execution */
542 int to_attach_no_wait
;
543 /* ASYNC target controls */
544 int (*to_can_async_p
) (void);
545 int (*to_is_async_p
) (void);
546 void (*to_async
) (void (*) (enum inferior_event_type
, void *), void *);
547 int (*to_supports_non_stop
) (void);
548 /* find_memory_regions support method for gcore */
549 int (*to_find_memory_regions
) (find_memory_region_ftype func
, void *data
);
550 /* make_corefile_notes support method for gcore */
551 char * (*to_make_corefile_notes
) (bfd
*, int *);
552 /* get_bookmark support method for bookmarks */
553 gdb_byte
* (*to_get_bookmark
) (char *, int);
554 /* goto_bookmark support method for bookmarks */
555 void (*to_goto_bookmark
) (gdb_byte
*, int);
556 /* Return the thread-local address at OFFSET in the
557 thread-local storage for the thread PTID and the shared library
558 or executable file given by OBJFILE. If that block of
559 thread-local storage hasn't been allocated yet, this function
560 may return an error. */
561 CORE_ADDR (*to_get_thread_local_address
) (struct target_ops
*ops
,
563 CORE_ADDR load_module_addr
,
566 /* Request that OPS transfer up to LEN 8-bit bytes of the target's
567 OBJECT. The OFFSET, for a seekable object, specifies the
568 starting point. The ANNEX can be used to provide additional
569 data-specific information to the target.
571 Return the number of bytes actually transfered, zero when no
572 further transfer is possible, and -1 when the transfer is not
573 supported. Return of a positive value smaller than LEN does
574 not indicate the end of the object, only the end of the
575 transfer; higher level code should continue transferring if
576 desired. This is handled in target.c.
578 The interface does not support a "retry" mechanism. Instead it
579 assumes that at least one byte will be transfered on each
582 NOTE: cagney/2003-10-17: The current interface can lead to
583 fragmented transfers. Lower target levels should not implement
584 hacks, such as enlarging the transfer, in an attempt to
585 compensate for this. Instead, the target stack should be
586 extended so that it implements supply/collect methods and a
587 look-aside object cache. With that available, the lowest
588 target can safely and freely "push" data up the stack.
590 See target_read and target_write for more information. One,
591 and only one, of readbuf or writebuf must be non-NULL. */
593 LONGEST (*to_xfer_partial
) (struct target_ops
*ops
,
594 enum target_object object
, const char *annex
,
595 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
596 ULONGEST offset
, LONGEST len
);
598 /* Returns the memory map for the target. A return value of NULL
599 means that no memory map is available. If a memory address
600 does not fall within any returned regions, it's assumed to be
601 RAM. The returned memory regions should not overlap.
603 The order of regions does not matter; target_memory_map will
604 sort regions by starting address. For that reason, this
605 function should not be called directly except via
608 This method should not cache data; if the memory map could
609 change unexpectedly, it should be invalidated, and higher
610 layers will re-fetch it. */
611 VEC(mem_region_s
) *(*to_memory_map
) (struct target_ops
*);
613 /* Erases the region of flash memory starting at ADDRESS, of
616 Precondition: both ADDRESS and ADDRESS+LENGTH should be aligned
617 on flash block boundaries, as reported by 'to_memory_map'. */
618 void (*to_flash_erase
) (struct target_ops
*,
619 ULONGEST address
, LONGEST length
);
621 /* Finishes a flash memory write sequence. After this operation
622 all flash memory should be available for writing and the result
623 of reading from areas written by 'to_flash_write' should be
624 equal to what was written. */
625 void (*to_flash_done
) (struct target_ops
*);
627 /* Describe the architecture-specific features of this target.
628 Returns the description found, or NULL if no description
630 const struct target_desc
*(*to_read_description
) (struct target_ops
*ops
);
632 /* Build the PTID of the thread on which a given task is running,
633 based on LWP and THREAD. These values are extracted from the
634 task Private_Data section of the Ada Task Control Block, and
635 their interpretation depends on the target. */
636 ptid_t (*to_get_ada_task_ptid
) (long lwp
, long thread
);
638 /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
639 Return 0 if *READPTR is already at the end of the buffer.
640 Return -1 if there is insufficient buffer for a whole entry.
641 Return 1 if an entry was read into *TYPEP and *VALP. */
642 int (*to_auxv_parse
) (struct target_ops
*ops
, gdb_byte
**readptr
,
643 gdb_byte
*endptr
, CORE_ADDR
*typep
, CORE_ADDR
*valp
);
645 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
646 sequence of bytes in PATTERN with length PATTERN_LEN.
648 The result is 1 if found, 0 if not found, and -1 if there was an error
649 requiring halting of the search (e.g. memory read error).
650 If the pattern is found the address is recorded in FOUND_ADDRP. */
651 int (*to_search_memory
) (struct target_ops
*ops
,
652 CORE_ADDR start_addr
, ULONGEST search_space_len
,
653 const gdb_byte
*pattern
, ULONGEST pattern_len
,
654 CORE_ADDR
*found_addrp
);
656 /* Can target execute in reverse? */
657 int (*to_can_execute_reverse
) (void);
659 /* The direction the target is currently executing. Must be
660 implemented on targets that support reverse execution and async
661 mode. The default simply returns forward execution. */
662 enum exec_direction_kind (*to_execution_direction
) (void);
664 /* Does this target support debugging multiple processes
666 int (*to_supports_multi_process
) (void);
668 /* Does this target support enabling and disabling tracepoints while a trace
669 experiment is running? */
670 int (*to_supports_enable_disable_tracepoint
) (void);
672 /* Does this target support disabling address space randomization? */
673 int (*to_supports_disable_randomization
) (void);
675 /* Does this target support the tracenz bytecode for string collection? */
676 int (*to_supports_string_tracing
) (void);
678 /* Does this target support evaluation of breakpoint conditions on its
680 int (*to_supports_evaluation_of_breakpoint_conditions
) (void);
682 /* Does this target support evaluation of breakpoint commands on its
684 int (*to_can_run_breakpoint_commands
) (void);
686 /* Determine current architecture of thread PTID.
688 The target is supposed to determine the architecture of the code where
689 the target is currently stopped at (on Cell, if a target is in spu_run,
690 to_thread_architecture would return SPU, otherwise PPC32 or PPC64).
691 This is architecture used to perform decr_pc_after_break adjustment,
692 and also determines the frame architecture of the innermost frame.
693 ptrace operations need to operate according to target_gdbarch ().
695 The default implementation always returns target_gdbarch (). */
696 struct gdbarch
*(*to_thread_architecture
) (struct target_ops
*, ptid_t
);
698 /* Determine current address space of thread PTID.
700 The default implementation always returns the inferior's
702 struct address_space
*(*to_thread_address_space
) (struct target_ops
*,
705 /* Target file operations. */
707 /* Open FILENAME on the target, using FLAGS and MODE. Return a
708 target file descriptor, or -1 if an error occurs (and set
710 int (*to_fileio_open
) (const char *filename
, int flags
, int mode
,
713 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
714 Return the number of bytes written, or -1 if an error occurs
715 (and set *TARGET_ERRNO). */
716 int (*to_fileio_pwrite
) (int fd
, const gdb_byte
*write_buf
, int len
,
717 ULONGEST offset
, int *target_errno
);
719 /* Read up to LEN bytes FD on the target into READ_BUF.
720 Return the number of bytes read, or -1 if an error occurs
721 (and set *TARGET_ERRNO). */
722 int (*to_fileio_pread
) (int fd
, gdb_byte
*read_buf
, int len
,
723 ULONGEST offset
, int *target_errno
);
725 /* Close FD on the target. Return 0, or -1 if an error occurs
726 (and set *TARGET_ERRNO). */
727 int (*to_fileio_close
) (int fd
, int *target_errno
);
729 /* Unlink FILENAME on the target. Return 0, or -1 if an error
730 occurs (and set *TARGET_ERRNO). */
731 int (*to_fileio_unlink
) (const char *filename
, int *target_errno
);
733 /* Read value of symbolic link FILENAME on the target. Return a
734 null-terminated string allocated via xmalloc, or NULL if an error
735 occurs (and set *TARGET_ERRNO). */
736 char *(*to_fileio_readlink
) (const char *filename
, int *target_errno
);
739 /* Implement the "info proc" command. */
740 void (*to_info_proc
) (struct target_ops
*, char *, enum info_proc_what
);
742 /* Tracepoint-related operations. */
744 /* Prepare the target for a tracing run. */
745 void (*to_trace_init
) (void);
747 /* Send full details of a tracepoint location to the target. */
748 void (*to_download_tracepoint
) (struct bp_location
*location
);
750 /* Is the target able to download tracepoint locations in current
752 int (*to_can_download_tracepoint
) (void);
754 /* Send full details of a trace state variable to the target. */
755 void (*to_download_trace_state_variable
) (struct trace_state_variable
*tsv
);
757 /* Enable a tracepoint on the target. */
758 void (*to_enable_tracepoint
) (struct bp_location
*location
);
760 /* Disable a tracepoint on the target. */
761 void (*to_disable_tracepoint
) (struct bp_location
*location
);
763 /* Inform the target info of memory regions that are readonly
764 (such as text sections), and so it should return data from
765 those rather than look in the trace buffer. */
766 void (*to_trace_set_readonly_regions
) (void);
768 /* Start a trace run. */
769 void (*to_trace_start
) (void);
771 /* Get the current status of a tracing run. */
772 int (*to_get_trace_status
) (struct trace_status
*ts
);
774 void (*to_get_tracepoint_status
) (struct breakpoint
*tp
,
775 struct uploaded_tp
*utp
);
777 /* Stop a trace run. */
778 void (*to_trace_stop
) (void);
780 /* Ask the target to find a trace frame of the given type TYPE,
781 using NUM, ADDR1, and ADDR2 as search parameters. Returns the
782 number of the trace frame, and also the tracepoint number at
783 TPP. If no trace frame matches, return -1. May throw if the
785 int (*to_trace_find
) (enum trace_find_type type
, int num
,
786 ULONGEST addr1
, ULONGEST addr2
, int *tpp
);
788 /* Get the value of the trace state variable number TSV, returning
789 1 if the value is known and writing the value itself into the
790 location pointed to by VAL, else returning 0. */
791 int (*to_get_trace_state_variable_value
) (int tsv
, LONGEST
*val
);
793 int (*to_save_trace_data
) (const char *filename
);
795 int (*to_upload_tracepoints
) (struct uploaded_tp
**utpp
);
797 int (*to_upload_trace_state_variables
) (struct uploaded_tsv
**utsvp
);
799 LONGEST (*to_get_raw_trace_data
) (gdb_byte
*buf
,
800 ULONGEST offset
, LONGEST len
);
802 /* Get the minimum length of instruction on which a fast tracepoint
803 may be set on the target. If this operation is unsupported,
804 return -1. If for some reason the minimum length cannot be
805 determined, return 0. */
806 int (*to_get_min_fast_tracepoint_insn_len
) (void);
808 /* Set the target's tracing behavior in response to unexpected
809 disconnection - set VAL to 1 to keep tracing, 0 to stop. */
810 void (*to_set_disconnected_tracing
) (int val
);
811 void (*to_set_circular_trace_buffer
) (int val
);
812 /* Set the size of trace buffer in the target. */
813 void (*to_set_trace_buffer_size
) (LONGEST val
);
815 /* Add/change textual notes about the trace run, returning 1 if
816 successful, 0 otherwise. */
817 int (*to_set_trace_notes
) (char *user
, char *notes
, char* stopnotes
);
819 /* Return the processor core that thread PTID was last seen on.
820 This information is updated only when:
821 - update_thread_list is called
823 If the core cannot be determined -- either for the specified
824 thread, or right now, or in this debug session, or for this
825 target -- return -1. */
826 int (*to_core_of_thread
) (struct target_ops
*, ptid_t ptid
);
828 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range
829 matches the contents of [DATA,DATA+SIZE). Returns 1 if there's
830 a match, 0 if there's a mismatch, and -1 if an error is
831 encountered while reading memory. */
832 int (*to_verify_memory
) (struct target_ops
*, const gdb_byte
*data
,
833 CORE_ADDR memaddr
, ULONGEST size
);
835 /* Return the address of the start of the Thread Information Block
836 a Windows OS specific feature. */
837 int (*to_get_tib_address
) (ptid_t ptid
, CORE_ADDR
*addr
);
839 /* Send the new settings of write permission variables. */
840 void (*to_set_permissions
) (void);
842 /* Look for a static tracepoint marker at ADDR, and fill in MARKER
843 with its details. Return 1 on success, 0 on failure. */
844 int (*to_static_tracepoint_marker_at
) (CORE_ADDR
,
845 struct static_tracepoint_marker
*marker
);
847 /* Return a vector of all tracepoints markers string id ID, or all
848 markers if ID is NULL. */
849 VEC(static_tracepoint_marker_p
) *(*to_static_tracepoint_markers_by_strid
)
852 /* Return a traceframe info object describing the current
853 traceframe's contents. This method should not cache data;
854 higher layers take care of caching, invalidating, and
855 re-fetching when necessary. */
856 struct traceframe_info
*(*to_traceframe_info
) (void);
858 /* Ask the target to use or not to use agent according to USE. Return 1
859 successful, 0 otherwise. */
860 int (*to_use_agent
) (int use
);
862 /* Is the target able to use agent in current state? */
863 int (*to_can_use_agent
) (void);
865 /* Check whether the target supports branch tracing. */
866 int (*to_supports_btrace
) (void);
868 /* Enable branch tracing for PTID and allocate a branch trace target
869 information struct for reading and for disabling branch trace. */
870 struct btrace_target_info
*(*to_enable_btrace
) (ptid_t ptid
);
872 /* Disable branch tracing and deallocate TINFO. */
873 void (*to_disable_btrace
) (struct btrace_target_info
*tinfo
);
875 /* Disable branch tracing and deallocate TINFO. This function is similar
876 to to_disable_btrace, except that it is called during teardown and is
877 only allowed to perform actions that are safe. A counter-example would
878 be attempting to talk to a remote target. */
879 void (*to_teardown_btrace
) (struct btrace_target_info
*tinfo
);
881 /* Read branch trace data. */
882 VEC (btrace_block_s
) *(*to_read_btrace
) (struct btrace_target_info
*,
883 enum btrace_read_type
);
885 /* Stop trace recording. */
886 void (*to_stop_recording
) (void);
888 /* Print information about the recording. */
889 void (*to_info_record
) (void);
891 /* Save the recorded execution trace into a file. */
892 void (*to_save_record
) (char *filename
);
894 /* Delete the recorded execution trace from the current position onwards. */
895 void (*to_delete_record
) (void);
897 /* Query if the record target is currently replaying. */
898 int (*to_record_is_replaying
) (void);
900 /* Go to the begin of the execution trace. */
901 void (*to_goto_record_begin
) (void);
903 /* Go to the end of the execution trace. */
904 void (*to_goto_record_end
) (void);
906 /* Go to a specific location in the recorded execution trace. */
907 void (*to_goto_record
) (ULONGEST insn
);
909 /* Disassemble SIZE instructions in the recorded execution trace from
910 the current position.
911 If SIZE < 0, disassemble abs (SIZE) preceding instructions; otherwise,
912 disassemble SIZE succeeding instructions. */
913 void (*to_insn_history
) (int size
, int flags
);
915 /* Disassemble SIZE instructions in the recorded execution trace around
917 If SIZE < 0, disassemble abs (SIZE) instructions before FROM; otherwise,
918 disassemble SIZE instructions after FROM. */
919 void (*to_insn_history_from
) (ULONGEST from
, int size
, int flags
);
921 /* Disassemble a section of the recorded execution trace from instruction
922 BEGIN (inclusive) to instruction END (exclusive). */
923 void (*to_insn_history_range
) (ULONGEST begin
, ULONGEST end
, int flags
);
925 /* Print a function trace of the recorded execution trace.
926 If SIZE < 0, print abs (SIZE) preceding functions; otherwise, print SIZE
927 succeeding functions. */
928 void (*to_call_history
) (int size
, int flags
);
930 /* Print a function trace of the recorded execution trace starting
932 If SIZE < 0, print abs (SIZE) functions before FROM; otherwise, print
933 SIZE functions after FROM. */
934 void (*to_call_history_from
) (ULONGEST begin
, int size
, int flags
);
936 /* Print a function trace of an execution trace section from function BEGIN
937 (inclusive) to function END (exclusive). */
938 void (*to_call_history_range
) (ULONGEST begin
, ULONGEST end
, int flags
);
941 /* Need sub-structure for target machine related rather than comm related?
945 /* Magic number for checking ops size. If a struct doesn't end with this
946 number, somebody changed the declaration but didn't change all the
947 places that initialize one. */
949 #define OPS_MAGIC 3840
951 /* The ops structure for our "current" target process. This should
952 never be NULL. If there is no target, it points to the dummy_target. */
954 extern struct target_ops current_target
;
956 /* Define easy words for doing these operations on our current target. */
958 #define target_shortname (current_target.to_shortname)
959 #define target_longname (current_target.to_longname)
961 /* Does whatever cleanup is required for a target that we are no
962 longer going to be calling. QUITTING indicates that GDB is exiting
963 and should not get hung on an error (otherwise it is important to
964 perform clean termination, even if it takes a while). This routine
965 is automatically always called after popping the target off the
966 target stack - the target's own methods are no longer available
967 through the target vector. Closing file descriptors and freeing all
968 memory allocated memory are typical things it should do. */
970 void target_close (struct target_ops
*targ
, int quitting
);
972 /* Attaches to a process on the target side. Arguments are as passed
973 to the `attach' command by the user. This routine can be called
974 when the target is not on the target-stack, if the target_can_run
975 routine returns 1; in that case, it must push itself onto the stack.
976 Upon exit, the target should be ready for normal operations, and
977 should be ready to deliver the status of the process immediately
978 (without waiting) to an upcoming target_wait call. */
980 void target_attach (char *, int);
982 /* Some targets don't generate traps when attaching to the inferior,
983 or their target_attach implementation takes care of the waiting.
984 These targets must set to_attach_no_wait. */
986 #define target_attach_no_wait \
987 (current_target.to_attach_no_wait)
989 /* The target_attach operation places a process under debugger control,
990 and stops the process.
992 This operation provides a target-specific hook that allows the
993 necessary bookkeeping to be performed after an attach completes. */
994 #define target_post_attach(pid) \
995 (*current_target.to_post_attach) (pid)
997 /* Takes a program previously attached to and detaches it.
998 The program may resume execution (some targets do, some don't) and will
999 no longer stop on signals, etc. We better not have left any breakpoints
1000 in the program or it'll die when it hits one. ARGS is arguments
1001 typed by the user (e.g. a signal to send the process). FROM_TTY
1002 says whether to be verbose or not. */
1004 extern void target_detach (char *, int);
1006 /* Disconnect from the current target without resuming it (leaving it
1007 waiting for a debugger). */
1009 extern void target_disconnect (char *, int);
1011 /* Resume execution of the target process PTID (or a group of
1012 threads). STEP says whether to single-step or to run free; SIGGNAL
1013 is the signal to be given to the target, or GDB_SIGNAL_0 for no
1014 signal. The caller may not pass GDB_SIGNAL_DEFAULT. A specific
1015 PTID means `step/resume only this process id'. A wildcard PTID
1016 (all threads, or all threads of process) means `step/resume
1017 INFERIOR_PTID, and let other threads (for which the wildcard PTID
1018 matches) resume with their 'thread->suspend.stop_signal' signal
1019 (usually GDB_SIGNAL_0) if it is in "pass" state, or with no signal
1020 if in "no pass" state. */
1022 extern void target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
);
1024 /* Wait for process pid to do something. PTID = -1 to wait for any
1025 pid to do something. Return pid of child, or -1 in case of error;
1026 store status through argument pointer STATUS. Note that it is
1027 _NOT_ OK to throw_exception() out of target_wait() without popping
1028 the debugging target from the stack; GDB isn't prepared to get back
1029 to the prompt with a debugging target but without the frame cache,
1030 stop_pc, etc., set up. OPTIONS is a bitwise OR of TARGET_W*
1033 extern ptid_t
target_wait (ptid_t ptid
, struct target_waitstatus
*status
,
1036 /* Fetch at least register REGNO, or all regs if regno == -1. No result. */
1038 extern void target_fetch_registers (struct regcache
*regcache
, int regno
);
1040 /* Store at least register REGNO, or all regs if REGNO == -1.
1041 It can store as many registers as it wants to, so target_prepare_to_store
1042 must have been previously called. Calls error() if there are problems. */
1044 extern void target_store_registers (struct regcache
*regcache
, int regs
);
1046 /* Get ready to modify the registers array. On machines which store
1047 individual registers, this doesn't need to do anything. On machines
1048 which store all the registers in one fell swoop, this makes sure
1049 that REGISTERS contains all the registers from the program being
1052 #define target_prepare_to_store(regcache) \
1053 (*current_target.to_prepare_to_store) (regcache)
1055 /* Determine current address space of thread PTID. */
1057 struct address_space
*target_thread_address_space (ptid_t
);
1059 /* Implement the "info proc" command. This returns one if the request
1060 was handled, and zero otherwise. It can also throw an exception if
1061 an error was encountered while attempting to handle the
1064 int target_info_proc (char *, enum info_proc_what
);
1066 /* Returns true if this target can debug multiple processes
1069 #define target_supports_multi_process() \
1070 (*current_target.to_supports_multi_process) ()
1072 /* Returns true if this target can disable address space randomization. */
1074 int target_supports_disable_randomization (void);
1076 /* Returns true if this target can enable and disable tracepoints
1077 while a trace experiment is running. */
1079 #define target_supports_enable_disable_tracepoint() \
1080 (*current_target.to_supports_enable_disable_tracepoint) ()
1082 #define target_supports_string_tracing() \
1083 (*current_target.to_supports_string_tracing) ()
1085 /* Returns true if this target can handle breakpoint conditions
1088 #define target_supports_evaluation_of_breakpoint_conditions() \
1089 (*current_target.to_supports_evaluation_of_breakpoint_conditions) ()
1091 /* Returns true if this target can handle breakpoint commands
1094 #define target_can_run_breakpoint_commands() \
1095 (*current_target.to_can_run_breakpoint_commands) ()
1097 /* Invalidate all target dcaches. */
1098 extern void target_dcache_invalidate (void);
1100 extern int target_read_string (CORE_ADDR
, char **, int, int *);
1102 extern int target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
1105 extern int target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
);
1107 extern int target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
,
1110 extern int target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
,
1113 /* Fetches the target's memory map. If one is found it is sorted
1114 and returned, after some consistency checking. Otherwise, NULL
1116 VEC(mem_region_s
) *target_memory_map (void);
1118 /* Erase the specified flash region. */
1119 void target_flash_erase (ULONGEST address
, LONGEST length
);
1121 /* Finish a sequence of flash operations. */
1122 void target_flash_done (void);
1124 /* Describes a request for a memory write operation. */
1125 struct memory_write_request
1127 /* Begining address that must be written. */
1129 /* Past-the-end address. */
1131 /* The data to write. */
1133 /* A callback baton for progress reporting for this request. */
1136 typedef struct memory_write_request memory_write_request_s
;
1137 DEF_VEC_O(memory_write_request_s
);
1139 /* Enumeration specifying different flash preservation behaviour. */
1140 enum flash_preserve_mode
1146 /* Write several memory blocks at once. This version can be more
1147 efficient than making several calls to target_write_memory, in
1148 particular because it can optimize accesses to flash memory.
1150 Moreover, this is currently the only memory access function in gdb
1151 that supports writing to flash memory, and it should be used for
1152 all cases where access to flash memory is desirable.
1154 REQUESTS is the vector (see vec.h) of memory_write_request.
1155 PRESERVE_FLASH_P indicates what to do with blocks which must be
1156 erased, but not completely rewritten.
1157 PROGRESS_CB is a function that will be periodically called to provide
1158 feedback to user. It will be called with the baton corresponding
1159 to the request currently being written. It may also be called
1160 with a NULL baton, when preserved flash sectors are being rewritten.
1162 The function returns 0 on success, and error otherwise. */
1163 int target_write_memory_blocks (VEC(memory_write_request_s
) *requests
,
1164 enum flash_preserve_mode preserve_flash_p
,
1165 void (*progress_cb
) (ULONGEST
, void *));
1167 /* Print a line about the current target. */
1169 #define target_files_info() \
1170 (*current_target.to_files_info) (¤t_target)
1172 /* Insert a breakpoint at address BP_TGT->placed_address in the target
1173 machine. Result is 0 for success, or an errno value. */
1175 extern int target_insert_breakpoint (struct gdbarch
*gdbarch
,
1176 struct bp_target_info
*bp_tgt
);
1178 /* Remove a breakpoint at address BP_TGT->placed_address in the target
1179 machine. Result is 0 for success, or an errno value. */
1181 extern int target_remove_breakpoint (struct gdbarch
*gdbarch
,
1182 struct bp_target_info
*bp_tgt
);
1184 /* Initialize the terminal settings we record for the inferior,
1185 before we actually run the inferior. */
1187 #define target_terminal_init() \
1188 (*current_target.to_terminal_init) ()
1190 /* Put the inferior's terminal settings into effect.
1191 This is preparation for starting or resuming the inferior. */
1193 extern void target_terminal_inferior (void);
1195 /* Put some of our terminal settings into effect,
1196 enough to get proper results from our output,
1197 but do not change into or out of RAW mode
1198 so that no input is discarded.
1200 After doing this, either terminal_ours or terminal_inferior
1201 should be called to get back to a normal state of affairs. */
1203 #define target_terminal_ours_for_output() \
1204 (*current_target.to_terminal_ours_for_output) ()
1206 /* Put our terminal settings into effect.
1207 First record the inferior's terminal settings
1208 so they can be restored properly later. */
1210 #define target_terminal_ours() \
1211 (*current_target.to_terminal_ours) ()
1213 /* Save our terminal settings.
1214 This is called from TUI after entering or leaving the curses
1215 mode. Since curses modifies our terminal this call is here
1216 to take this change into account. */
1218 #define target_terminal_save_ours() \
1219 (*current_target.to_terminal_save_ours) ()
1221 /* Print useful information about our terminal status, if such a thing
1224 #define target_terminal_info(arg, from_tty) \
1225 (*current_target.to_terminal_info) (arg, from_tty)
1227 /* Kill the inferior process. Make it go away. */
1229 extern void target_kill (void);
1231 /* Load an executable file into the target process. This is expected
1232 to not only bring new code into the target process, but also to
1233 update GDB's symbol tables to match.
1235 ARG contains command-line arguments, to be broken down with
1236 buildargv (). The first non-switch argument is the filename to
1237 load, FILE; the second is a number (as parsed by strtoul (..., ...,
1238 0)), which is an offset to apply to the load addresses of FILE's
1239 sections. The target may define switches, or other non-switch
1240 arguments, as it pleases. */
1242 extern void target_load (char *arg
, int from_tty
);
1244 /* Start an inferior process and set inferior_ptid to its pid.
1245 EXEC_FILE is the file to run.
1246 ALLARGS is a string containing the arguments to the program.
1247 ENV is the environment vector to pass. Errors reported with error().
1248 On VxWorks and various standalone systems, we ignore exec_file. */
1250 void target_create_inferior (char *exec_file
, char *args
,
1251 char **env
, int from_tty
);
1253 /* Some targets (such as ttrace-based HPUX) don't allow us to request
1254 notification of inferior events such as fork and vork immediately
1255 after the inferior is created. (This because of how gdb gets an
1256 inferior created via invoking a shell to do it. In such a scenario,
1257 if the shell init file has commands in it, the shell will fork and
1258 exec for each of those commands, and we will see each such fork
1261 Such targets will supply an appropriate definition for this function. */
1263 #define target_post_startup_inferior(ptid) \
1264 (*current_target.to_post_startup_inferior) (ptid)
1266 /* On some targets, we can catch an inferior fork or vfork event when
1267 it occurs. These functions insert/remove an already-created
1268 catchpoint for such events. They return 0 for success, 1 if the
1269 catchpoint type is not supported and -1 for failure. */
1271 #define target_insert_fork_catchpoint(pid) \
1272 (*current_target.to_insert_fork_catchpoint) (pid)
1274 #define target_remove_fork_catchpoint(pid) \
1275 (*current_target.to_remove_fork_catchpoint) (pid)
1277 #define target_insert_vfork_catchpoint(pid) \
1278 (*current_target.to_insert_vfork_catchpoint) (pid)
1280 #define target_remove_vfork_catchpoint(pid) \
1281 (*current_target.to_remove_vfork_catchpoint) (pid)
1283 /* If the inferior forks or vforks, this function will be called at
1284 the next resume in order to perform any bookkeeping and fiddling
1285 necessary to continue debugging either the parent or child, as
1286 requested, and releasing the other. Information about the fork
1287 or vfork event is available via get_last_target_status ().
1288 This function returns 1 if the inferior should not be resumed
1289 (i.e. there is another event pending). */
1291 int target_follow_fork (int follow_child
);
1293 /* On some targets, we can catch an inferior exec event when it
1294 occurs. These functions insert/remove an already-created
1295 catchpoint for such events. They return 0 for success, 1 if the
1296 catchpoint type is not supported and -1 for failure. */
1298 #define target_insert_exec_catchpoint(pid) \
1299 (*current_target.to_insert_exec_catchpoint) (pid)
1301 #define target_remove_exec_catchpoint(pid) \
1302 (*current_target.to_remove_exec_catchpoint) (pid)
1306 NEEDED is nonzero if any syscall catch (of any kind) is requested.
1307 If NEEDED is zero, it means the target can disable the mechanism to
1308 catch system calls because there are no more catchpoints of this type.
1310 ANY_COUNT is nonzero if a generic (filter-less) syscall catch is
1311 being requested. In this case, both TABLE_SIZE and TABLE should
1314 TABLE_SIZE is the number of elements in TABLE. It only matters if
1317 TABLE is an array of ints, indexed by syscall number. An element in
1318 this array is nonzero if that syscall should be caught. This argument
1319 only matters if ANY_COUNT is zero.
1321 Return 0 for success, 1 if syscall catchpoints are not supported or -1
1324 #define target_set_syscall_catchpoint(pid, needed, any_count, table_size, table) \
1325 (*current_target.to_set_syscall_catchpoint) (pid, needed, any_count, \
1328 /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the
1329 exit code of PID, if any. */
1331 #define target_has_exited(pid,wait_status,exit_status) \
1332 (*current_target.to_has_exited) (pid,wait_status,exit_status)
1334 /* The debugger has completed a blocking wait() call. There is now
1335 some process event that must be processed. This function should
1336 be defined by those targets that require the debugger to perform
1337 cleanup or internal state changes in response to the process event. */
1339 /* The inferior process has died. Do what is right. */
1341 void target_mourn_inferior (void);
1343 /* Does target have enough data to do a run or attach command? */
1345 #define target_can_run(t) \
1346 ((t)->to_can_run) ()
1348 /* Set list of signals to be handled in the target.
1350 PASS_SIGNALS is an array of size NSIG, indexed by target signal number
1351 (enum gdb_signal). For every signal whose entry in this array is
1352 non-zero, the target is allowed -but not required- to skip reporting
1353 arrival of the signal to the GDB core by returning from target_wait,
1354 and to pass the signal directly to the inferior instead.
1356 However, if the target is hardware single-stepping a thread that is
1357 about to receive a signal, it needs to be reported in any case, even
1358 if mentioned in a previous target_pass_signals call. */
1360 extern void target_pass_signals (int nsig
, unsigned char *pass_signals
);
1362 /* Set list of signals the target may pass to the inferior. This
1363 directly maps to the "handle SIGNAL pass/nopass" setting.
1365 PROGRAM_SIGNALS is an array of size NSIG, indexed by target signal
1366 number (enum gdb_signal). For every signal whose entry in this
1367 array is non-zero, the target is allowed to pass the signal to the
1368 inferior. Signals not present in the array shall be silently
1369 discarded. This does not influence whether to pass signals to the
1370 inferior as a result of a target_resume call. This is useful in
1371 scenarios where the target needs to decide whether to pass or not a
1372 signal to the inferior without GDB core involvement, such as for
1373 example, when detaching (as threads may have been suspended with
1374 pending signals not reported to GDB). */
1376 extern void target_program_signals (int nsig
, unsigned char *program_signals
);
1378 /* Check to see if a thread is still alive. */
1380 extern int target_thread_alive (ptid_t ptid
);
1382 /* Query for new threads and add them to the thread list. */
1384 extern void target_find_new_threads (void);
1386 /* Make target stop in a continuable fashion. (For instance, under
1387 Unix, this should act like SIGSTOP). This function is normally
1388 used by GUIs to implement a stop button. */
1390 extern void target_stop (ptid_t ptid
);
1392 /* Send the specified COMMAND to the target's monitor
1393 (shell,interpreter) for execution. The result of the query is
1394 placed in OUTBUF. */
1396 #define target_rcmd(command, outbuf) \
1397 (*current_target.to_rcmd) (command, outbuf)
1400 /* Does the target include all of memory, or only part of it? This
1401 determines whether we look up the target chain for other parts of
1402 memory if this target can't satisfy a request. */
1404 extern int target_has_all_memory_1 (void);
1405 #define target_has_all_memory target_has_all_memory_1 ()
1407 /* Does the target include memory? (Dummy targets don't.) */
1409 extern int target_has_memory_1 (void);
1410 #define target_has_memory target_has_memory_1 ()
1412 /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until
1413 we start a process.) */
1415 extern int target_has_stack_1 (void);
1416 #define target_has_stack target_has_stack_1 ()
1418 /* Does the target have registers? (Exec files don't.) */
1420 extern int target_has_registers_1 (void);
1421 #define target_has_registers target_has_registers_1 ()
1423 /* Does the target have execution? Can we make it jump (through
1424 hoops), or pop its stack a few times? This means that the current
1425 target is currently executing; for some targets, that's the same as
1426 whether or not the target is capable of execution, but there are
1427 also targets which can be current while not executing. In that
1428 case this will become true after target_create_inferior or
1431 extern int target_has_execution_1 (ptid_t
);
1433 /* Like target_has_execution_1, but always passes inferior_ptid. */
1435 extern int target_has_execution_current (void);
1437 #define target_has_execution target_has_execution_current ()
1439 /* Default implementations for process_stratum targets. Return true
1440 if there's a selected inferior, false otherwise. */
1442 extern int default_child_has_all_memory (struct target_ops
*ops
);
1443 extern int default_child_has_memory (struct target_ops
*ops
);
1444 extern int default_child_has_stack (struct target_ops
*ops
);
1445 extern int default_child_has_registers (struct target_ops
*ops
);
1446 extern int default_child_has_execution (struct target_ops
*ops
,
1449 /* Can the target support the debugger control of thread execution?
1450 Can it lock the thread scheduler? */
1452 #define target_can_lock_scheduler \
1453 (current_target.to_has_thread_control & tc_schedlock)
1455 /* Should the target enable async mode if it is supported? Temporary
1456 cludge until async mode is a strict superset of sync mode. */
1457 extern int target_async_permitted
;
1459 /* Can the target support asynchronous execution? */
1460 #define target_can_async_p() (current_target.to_can_async_p ())
1462 /* Is the target in asynchronous execution mode? */
1463 #define target_is_async_p() (current_target.to_is_async_p ())
1465 int target_supports_non_stop (void);
1467 /* Put the target in async mode with the specified callback function. */
1468 #define target_async(CALLBACK,CONTEXT) \
1469 (current_target.to_async ((CALLBACK), (CONTEXT)))
1471 #define target_execution_direction() \
1472 (current_target.to_execution_direction ())
1474 /* Converts a process id to a string. Usually, the string just contains
1475 `process xyz', but on some systems it may contain
1476 `process xyz thread abc'. */
1478 extern char *target_pid_to_str (ptid_t ptid
);
1480 extern char *normal_pid_to_str (ptid_t ptid
);
1482 /* Return a short string describing extra information about PID,
1483 e.g. "sleeping", "runnable", "running on LWP 3". Null return value
1486 #define target_extra_thread_info(TP) \
1487 (current_target.to_extra_thread_info (TP))
1489 /* Return the thread's name. A NULL result means that the target
1490 could not determine this thread's name. */
1492 extern char *target_thread_name (struct thread_info
*);
1494 /* Attempts to find the pathname of the executable file
1495 that was run to create a specified process.
1497 The process PID must be stopped when this operation is used.
1499 If the executable file cannot be determined, NULL is returned.
1501 Else, a pointer to a character string containing the pathname
1502 is returned. This string should be copied into a buffer by
1503 the client if the string will not be immediately used, or if
1506 #define target_pid_to_exec_file(pid) \
1507 (current_target.to_pid_to_exec_file) (pid)
1509 /* See the to_thread_architecture description in struct target_ops. */
1511 #define target_thread_architecture(ptid) \
1512 (current_target.to_thread_architecture (¤t_target, ptid))
1515 * Iterator function for target memory regions.
1516 * Calls a callback function once for each memory region 'mapped'
1517 * in the child process. Defined as a simple macro rather than
1518 * as a function macro so that it can be tested for nullity.
1521 #define target_find_memory_regions(FUNC, DATA) \
1522 (current_target.to_find_memory_regions) (FUNC, DATA)
1525 * Compose corefile .note section.
1528 #define target_make_corefile_notes(BFD, SIZE_P) \
1529 (current_target.to_make_corefile_notes) (BFD, SIZE_P)
1531 /* Bookmark interfaces. */
1532 #define target_get_bookmark(ARGS, FROM_TTY) \
1533 (current_target.to_get_bookmark) (ARGS, FROM_TTY)
1535 #define target_goto_bookmark(ARG, FROM_TTY) \
1536 (current_target.to_goto_bookmark) (ARG, FROM_TTY)
1538 /* Hardware watchpoint interfaces. */
1540 /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or
1541 write). Only the INFERIOR_PTID task is being queried. */
1543 #define target_stopped_by_watchpoint \
1544 (*current_target.to_stopped_by_watchpoint)
1546 /* Non-zero if we have steppable watchpoints */
1548 #define target_have_steppable_watchpoint \
1549 (current_target.to_have_steppable_watchpoint)
1551 /* Non-zero if we have continuable watchpoints */
1553 #define target_have_continuable_watchpoint \
1554 (current_target.to_have_continuable_watchpoint)
1556 /* Provide defaults for hardware watchpoint functions. */
1558 /* If the *_hw_beakpoint functions have not been defined
1559 elsewhere use the definitions in the target vector. */
1561 /* Returns non-zero if we can set a hardware watchpoint of type TYPE. TYPE is
1562 one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or
1563 bp_hardware_breakpoint. CNT is the number of such watchpoints used so far
1564 (including this one?). OTHERTYPE is who knows what... */
1566 #define target_can_use_hardware_watchpoint(TYPE,CNT,OTHERTYPE) \
1567 (*current_target.to_can_use_hw_breakpoint) (TYPE, CNT, OTHERTYPE);
1569 /* Returns the number of debug registers needed to watch the given
1570 memory region, or zero if not supported. */
1572 #define target_region_ok_for_hw_watchpoint(addr, len) \
1573 (*current_target.to_region_ok_for_hw_watchpoint) (addr, len)
1576 /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes.
1577 TYPE is 0 for write, 1 for read, and 2 for read/write accesses.
1578 COND is the expression for its condition, or NULL if there's none.
1579 Returns 0 for success, 1 if the watchpoint type is not supported,
1582 #define target_insert_watchpoint(addr, len, type, cond) \
1583 (*current_target.to_insert_watchpoint) (addr, len, type, cond)
1585 #define target_remove_watchpoint(addr, len, type, cond) \
1586 (*current_target.to_remove_watchpoint) (addr, len, type, cond)
1588 /* Insert a new masked watchpoint at ADDR using the mask MASK.
1589 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
1590 or hw_access for an access watchpoint. Returns 0 for success, 1 if
1591 masked watchpoints are not supported, -1 for failure. */
1593 extern int target_insert_mask_watchpoint (CORE_ADDR
, CORE_ADDR
, int);
1595 /* Remove a masked watchpoint at ADDR with the mask MASK.
1596 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
1597 or hw_access for an access watchpoint. Returns 0 for success, non-zero
1600 extern int target_remove_mask_watchpoint (CORE_ADDR
, CORE_ADDR
, int);
1602 #define target_insert_hw_breakpoint(gdbarch, bp_tgt) \
1603 (*current_target.to_insert_hw_breakpoint) (gdbarch, bp_tgt)
1605 #define target_remove_hw_breakpoint(gdbarch, bp_tgt) \
1606 (*current_target.to_remove_hw_breakpoint) (gdbarch, bp_tgt)
1608 /* Return number of debug registers needed for a ranged breakpoint,
1609 or -1 if ranged breakpoints are not supported. */
1611 extern int target_ranged_break_num_registers (void);
1613 /* Return non-zero if target knows the data address which triggered this
1614 target_stopped_by_watchpoint, in such case place it to *ADDR_P. Only the
1615 INFERIOR_PTID task is being queried. */
1616 #define target_stopped_data_address(target, addr_p) \
1617 (*target.to_stopped_data_address) (target, addr_p)
1619 /* Return non-zero if ADDR is within the range of a watchpoint spanning
1620 LENGTH bytes beginning at START. */
1621 #define target_watchpoint_addr_within_range(target, addr, start, length) \
1622 (*target.to_watchpoint_addr_within_range) (target, addr, start, length)
1624 /* Return non-zero if the target is capable of using hardware to evaluate
1625 the condition expression. In this case, if the condition is false when
1626 the watched memory location changes, execution may continue without the
1627 debugger being notified.
1629 Due to limitations in the hardware implementation, it may be capable of
1630 avoiding triggering the watchpoint in some cases where the condition
1631 expression is false, but may report some false positives as well.
1632 For this reason, GDB will still evaluate the condition expression when
1633 the watchpoint triggers. */
1634 #define target_can_accel_watchpoint_condition(addr, len, type, cond) \
1635 (*current_target.to_can_accel_watchpoint_condition) (addr, len, type, cond)
1637 /* Return number of debug registers needed for a masked watchpoint,
1638 -1 if masked watchpoints are not supported or -2 if the given address
1639 and mask combination cannot be used. */
1641 extern int target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
);
1643 /* Target can execute in reverse? */
1644 #define target_can_execute_reverse \
1645 (current_target.to_can_execute_reverse ? \
1646 current_target.to_can_execute_reverse () : 0)
1648 extern const struct target_desc
*target_read_description (struct target_ops
*);
1650 #define target_get_ada_task_ptid(lwp, tid) \
1651 (*current_target.to_get_ada_task_ptid) (lwp,tid)
1653 /* Utility implementation of searching memory. */
1654 extern int simple_search_memory (struct target_ops
* ops
,
1655 CORE_ADDR start_addr
,
1656 ULONGEST search_space_len
,
1657 const gdb_byte
*pattern
,
1658 ULONGEST pattern_len
,
1659 CORE_ADDR
*found_addrp
);
1661 /* Main entry point for searching memory. */
1662 extern int target_search_memory (CORE_ADDR start_addr
,
1663 ULONGEST search_space_len
,
1664 const gdb_byte
*pattern
,
1665 ULONGEST pattern_len
,
1666 CORE_ADDR
*found_addrp
);
1668 /* Target file operations. */
1670 /* Open FILENAME on the target, using FLAGS and MODE. Return a
1671 target file descriptor, or -1 if an error occurs (and set
1673 extern int target_fileio_open (const char *filename
, int flags
, int mode
,
1676 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
1677 Return the number of bytes written, or -1 if an error occurs
1678 (and set *TARGET_ERRNO). */
1679 extern int target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
1680 ULONGEST offset
, int *target_errno
);
1682 /* Read up to LEN bytes FD on the target into READ_BUF.
1683 Return the number of bytes read, or -1 if an error occurs
1684 (and set *TARGET_ERRNO). */
1685 extern int target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
1686 ULONGEST offset
, int *target_errno
);
1688 /* Close FD on the target. Return 0, or -1 if an error occurs
1689 (and set *TARGET_ERRNO). */
1690 extern int target_fileio_close (int fd
, int *target_errno
);
1692 /* Unlink FILENAME on the target. Return 0, or -1 if an error
1693 occurs (and set *TARGET_ERRNO). */
1694 extern int target_fileio_unlink (const char *filename
, int *target_errno
);
1696 /* Read value of symbolic link FILENAME on the target. Return a
1697 null-terminated string allocated via xmalloc, or NULL if an error
1698 occurs (and set *TARGET_ERRNO). */
1699 extern char *target_fileio_readlink (const char *filename
, int *target_errno
);
1701 /* Read target file FILENAME. The return value will be -1 if the transfer
1702 fails or is not supported; 0 if the object is empty; or the length
1703 of the object otherwise. If a positive value is returned, a
1704 sufficiently large buffer will be allocated using xmalloc and
1705 returned in *BUF_P containing the contents of the object.
1707 This method should be used for objects sufficiently small to store
1708 in a single xmalloc'd buffer, when no fixed bound on the object's
1709 size is known in advance. */
1710 extern LONGEST
target_fileio_read_alloc (const char *filename
,
1713 /* Read target file FILENAME. The result is NUL-terminated and
1714 returned as a string, allocated using xmalloc. If an error occurs
1715 or the transfer is unsupported, NULL is returned. Empty objects
1716 are returned as allocated but empty strings. A warning is issued
1717 if the result contains any embedded NUL bytes. */
1718 extern char *target_fileio_read_stralloc (const char *filename
);
1721 /* Tracepoint-related operations. */
1723 #define target_trace_init() \
1724 (*current_target.to_trace_init) ()
1726 #define target_download_tracepoint(t) \
1727 (*current_target.to_download_tracepoint) (t)
1729 #define target_can_download_tracepoint() \
1730 (*current_target.to_can_download_tracepoint) ()
1732 #define target_download_trace_state_variable(tsv) \
1733 (*current_target.to_download_trace_state_variable) (tsv)
1735 #define target_enable_tracepoint(loc) \
1736 (*current_target.to_enable_tracepoint) (loc)
1738 #define target_disable_tracepoint(loc) \
1739 (*current_target.to_disable_tracepoint) (loc)
1741 #define target_trace_start() \
1742 (*current_target.to_trace_start) ()
1744 #define target_trace_set_readonly_regions() \
1745 (*current_target.to_trace_set_readonly_regions) ()
1747 #define target_get_trace_status(ts) \
1748 (*current_target.to_get_trace_status) (ts)
1750 #define target_get_tracepoint_status(tp,utp) \
1751 (*current_target.to_get_tracepoint_status) (tp, utp)
1753 #define target_trace_stop() \
1754 (*current_target.to_trace_stop) ()
1756 #define target_trace_find(type,num,addr1,addr2,tpp) \
1757 (*current_target.to_trace_find) ((type), (num), (addr1), (addr2), (tpp))
1759 #define target_get_trace_state_variable_value(tsv,val) \
1760 (*current_target.to_get_trace_state_variable_value) ((tsv), (val))
1762 #define target_save_trace_data(filename) \
1763 (*current_target.to_save_trace_data) (filename)
1765 #define target_upload_tracepoints(utpp) \
1766 (*current_target.to_upload_tracepoints) (utpp)
1768 #define target_upload_trace_state_variables(utsvp) \
1769 (*current_target.to_upload_trace_state_variables) (utsvp)
1771 #define target_get_raw_trace_data(buf,offset,len) \
1772 (*current_target.to_get_raw_trace_data) ((buf), (offset), (len))
1774 #define target_get_min_fast_tracepoint_insn_len() \
1775 (*current_target.to_get_min_fast_tracepoint_insn_len) ()
1777 #define target_set_disconnected_tracing(val) \
1778 (*current_target.to_set_disconnected_tracing) (val)
1780 #define target_set_circular_trace_buffer(val) \
1781 (*current_target.to_set_circular_trace_buffer) (val)
1783 #define target_set_trace_buffer_size(val) \
1784 (*current_target.to_set_trace_buffer_size) (val)
1786 #define target_set_trace_notes(user,notes,stopnotes) \
1787 (*current_target.to_set_trace_notes) ((user), (notes), (stopnotes))
1789 #define target_get_tib_address(ptid, addr) \
1790 (*current_target.to_get_tib_address) ((ptid), (addr))
1792 #define target_set_permissions() \
1793 (*current_target.to_set_permissions) ()
1795 #define target_static_tracepoint_marker_at(addr, marker) \
1796 (*current_target.to_static_tracepoint_marker_at) (addr, marker)
1798 #define target_static_tracepoint_markers_by_strid(marker_id) \
1799 (*current_target.to_static_tracepoint_markers_by_strid) (marker_id)
1801 #define target_traceframe_info() \
1802 (*current_target.to_traceframe_info) ()
1804 #define target_use_agent(use) \
1805 (*current_target.to_use_agent) (use)
1807 #define target_can_use_agent() \
1808 (*current_target.to_can_use_agent) ()
1810 /* Command logging facility. */
1812 #define target_log_command(p) \
1814 if (current_target.to_log_command) \
1815 (*current_target.to_log_command) (p); \
1819 extern int target_core_of_thread (ptid_t ptid
);
1821 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range matches
1822 the contents of [DATA,DATA+SIZE). Returns 1 if there's a match, 0
1823 if there's a mismatch, and -1 if an error is encountered while
1824 reading memory. Throws an error if the functionality is found not
1825 to be supported by the current target. */
1826 int target_verify_memory (const gdb_byte
*data
,
1827 CORE_ADDR memaddr
, ULONGEST size
);
1829 /* Routines for maintenance of the target structures...
1831 add_target: Add a target to the list of all possible targets.
1833 push_target: Make this target the top of the stack of currently used
1834 targets, within its particular stratum of the stack. Result
1835 is 0 if now atop the stack, nonzero if not on top (maybe
1838 unpush_target: Remove this from the stack of currently used targets,
1839 no matter where it is on the list. Returns 0 if no
1840 change, 1 if removed from stack.
1842 pop_target: Remove the top thing on the stack of current targets. */
1844 extern void add_target (struct target_ops
*);
1846 /* Adds a command ALIAS for target T and marks it deprecated. This is useful
1847 for maintaining backwards compatibility when renaming targets. */
1849 extern void add_deprecated_target_alias (struct target_ops
*t
, char *alias
);
1851 extern void push_target (struct target_ops
*);
1853 extern int unpush_target (struct target_ops
*);
1855 extern void target_pre_inferior (int);
1857 extern void target_preopen (int);
1859 extern void pop_target (void);
1861 /* Does whatever cleanup is required to get rid of all pushed targets.
1862 QUITTING is propagated to target_close; it indicates that GDB is
1863 exiting and should not get hung on an error (otherwise it is
1864 important to perform clean termination, even if it takes a
1866 extern void pop_all_targets (int quitting
);
1868 /* Like pop_all_targets, but pops only targets whose stratum is
1869 strictly above ABOVE_STRATUM. */
1870 extern void pop_all_targets_above (enum strata above_stratum
, int quitting
);
1872 extern int target_is_pushed (struct target_ops
*t
);
1874 extern CORE_ADDR
target_translate_tls_address (struct objfile
*objfile
,
1877 /* Struct target_section maps address ranges to file sections. It is
1878 mostly used with BFD files, but can be used without (e.g. for handling
1879 raw disks, or files not in formats handled by BFD). */
1881 struct target_section
1883 CORE_ADDR addr
; /* Lowest address in section */
1884 CORE_ADDR endaddr
; /* 1+highest address in section */
1886 struct bfd_section
*the_bfd_section
;
1888 /* A given BFD may appear multiple times in the target section
1889 list, so each BFD is associated with a given key. The key is
1890 just some convenient pointer that can be used to differentiate
1891 the BFDs. These are managed only by convention. */
1894 bfd
*bfd
; /* BFD file pointer */
1897 /* Holds an array of target sections. Defined by [SECTIONS..SECTIONS_END[. */
1899 struct target_section_table
1901 struct target_section
*sections
;
1902 struct target_section
*sections_end
;
1905 /* Return the "section" containing the specified address. */
1906 struct target_section
*target_section_by_addr (struct target_ops
*target
,
1909 /* Return the target section table this target (or the targets
1910 beneath) currently manipulate. */
1912 extern struct target_section_table
*target_get_section_table
1913 (struct target_ops
*target
);
1915 /* From mem-break.c */
1917 extern int memory_remove_breakpoint (struct gdbarch
*,
1918 struct bp_target_info
*);
1920 extern int memory_insert_breakpoint (struct gdbarch
*,
1921 struct bp_target_info
*);
1923 extern int default_memory_remove_breakpoint (struct gdbarch
*,
1924 struct bp_target_info
*);
1926 extern int default_memory_insert_breakpoint (struct gdbarch
*,
1927 struct bp_target_info
*);
1932 extern void initialize_targets (void);
1934 extern void noprocess (void) ATTRIBUTE_NORETURN
;
1936 extern void target_require_runnable (void);
1938 extern void find_default_attach (struct target_ops
*, char *, int);
1940 extern void find_default_create_inferior (struct target_ops
*,
1941 char *, char *, char **, int);
1943 extern struct target_ops
*find_run_target (void);
1945 extern struct target_ops
*find_target_beneath (struct target_ops
*);
1947 /* Read OS data object of type TYPE from the target, and return it in
1948 XML format. The result is NUL-terminated and returned as a string,
1949 allocated using xmalloc. If an error occurs or the transfer is
1950 unsupported, NULL is returned. Empty objects are returned as
1951 allocated but empty strings. */
1953 extern char *target_get_osdata (const char *type
);
1956 /* Stuff that should be shared among the various remote targets. */
1958 /* Debugging level. 0 is off, and non-zero values mean to print some debug
1959 information (higher values, more information). */
1960 extern int remote_debug
;
1962 /* Speed in bits per second, or -1 which means don't mess with the speed. */
1963 extern int baud_rate
;
1964 /* Timeout limit for response from target. */
1965 extern int remote_timeout
;
1969 /* Set the show memory breakpoints mode to show, and installs a cleanup
1970 to restore it back to the current value. */
1971 extern struct cleanup
*make_show_memory_breakpoints_cleanup (int show
);
1973 extern int may_write_registers
;
1974 extern int may_write_memory
;
1975 extern int may_insert_breakpoints
;
1976 extern int may_insert_tracepoints
;
1977 extern int may_insert_fast_tracepoints
;
1978 extern int may_stop
;
1980 extern void update_target_permissions (void);
1983 /* Imported from machine dependent code. */
1985 /* Blank target vector entries are initialized to target_ignore. */
1986 void target_ignore (void);
1988 /* See to_supports_btrace in struct target_ops. */
1989 extern int target_supports_btrace (void);
1991 /* See to_enable_btrace in struct target_ops. */
1992 extern struct btrace_target_info
*target_enable_btrace (ptid_t ptid
);
1994 /* See to_disable_btrace in struct target_ops. */
1995 extern void target_disable_btrace (struct btrace_target_info
*btinfo
);
1997 /* See to_teardown_btrace in struct target_ops. */
1998 extern void target_teardown_btrace (struct btrace_target_info
*btinfo
);
2000 /* See to_read_btrace in struct target_ops. */
2001 extern VEC (btrace_block_s
) *target_read_btrace (struct btrace_target_info
*,
2002 enum btrace_read_type
);
2004 /* See to_stop_recording in struct target_ops. */
2005 extern void target_stop_recording (void);
2007 /* See to_info_record in struct target_ops. */
2008 extern void target_info_record (void);
2010 /* See to_save_record in struct target_ops. */
2011 extern void target_save_record (char *filename
);
2013 /* Query if the target supports deleting the execution log. */
2014 extern int target_supports_delete_record (void);
2016 /* See to_delete_record in struct target_ops. */
2017 extern void target_delete_record (void);
2019 /* See to_record_is_replaying in struct target_ops. */
2020 extern int target_record_is_replaying (void);
2022 /* See to_goto_record_begin in struct target_ops. */
2023 extern void target_goto_record_begin (void);
2025 /* See to_goto_record_end in struct target_ops. */
2026 extern void target_goto_record_end (void);
2028 /* See to_goto_record in struct target_ops. */
2029 extern void target_goto_record (ULONGEST insn
);
2031 /* See to_insn_history. */
2032 extern void target_insn_history (int size
, int flags
);
2034 /* See to_insn_history_from. */
2035 extern void target_insn_history_from (ULONGEST from
, int size
, int flags
);
2037 /* See to_insn_history_range. */
2038 extern void target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
);
2040 /* See to_call_history. */
2041 extern void target_call_history (int size
, int flags
);
2043 /* See to_call_history_from. */
2044 extern void target_call_history_from (ULONGEST begin
, int size
, int flags
);
2046 /* See to_call_history_range. */
2047 extern void target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
);
2049 #endif /* !defined (TARGET_H) */