1 /* Interface between GDB and target environments, including files and processes
3 Copyright (C) 1990-2014 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
;
42 /* This include file defines the interface between the main part
43 of the debugger, and the part which is target-specific, or
44 specific to the communications interface between us and the
47 A TARGET is an interface between the debugger and a particular
48 kind of file or process. Targets can be STACKED in STRATA,
49 so that more than one target can potentially respond to a request.
50 In particular, memory accesses will walk down the stack of targets
51 until they find a target that is interested in handling that particular
52 address. STRATA are artificial boundaries on the stack, within
53 which particular kinds of targets live. Strata exist so that
54 people don't get confused by pushing e.g. a process target and then
55 a file target, and wondering why they can't see the current values
56 of variables any more (the file target is handling them and they
57 never get to the process target). So when you push a file target,
58 it goes into the file stratum, which is always below the process
61 #include "target/resume.h"
62 #include "target/wait.h"
63 #include "target/waitstatus.h"
68 #include "gdb_signals.h"
74 dummy_stratum
, /* The lowest of the low */
75 file_stratum
, /* Executable files, etc */
76 process_stratum
, /* Executing processes or core dump files */
77 thread_stratum
, /* Executing threads */
78 record_stratum
, /* Support record debugging */
79 arch_stratum
/* Architecture overrides */
82 enum thread_control_capabilities
84 tc_none
= 0, /* Default: can't control thread execution. */
85 tc_schedlock
= 1, /* Can lock the thread scheduler. */
88 /* The structure below stores information about a system call.
89 It is basically used in the "catch syscall" command, and in
90 every function that gives information about a system call.
92 It's also good to mention that its fields represent everything
93 that we currently know about a syscall in GDB. */
96 /* The syscall number. */
99 /* The syscall name. */
103 /* Return a pretty printed form of target_waitstatus.
104 Space for the result is malloc'd, caller must free. */
105 extern char *target_waitstatus_to_string (const struct target_waitstatus
*);
107 /* Return a pretty printed form of TARGET_OPTIONS.
108 Space for the result is malloc'd, caller must free. */
109 extern char *target_options_to_string (int target_options
);
111 /* Possible types of events that the inferior handler will have to
113 enum inferior_event_type
115 /* Process a normal inferior event which will result in target_wait
118 /* We are called because a timer went off. */
120 /* We are called to do stuff after the inferior stops. */
122 /* We are called to do some stuff after the inferior stops, but we
123 are expected to reenter the proceed() and
124 handle_inferior_event() functions. This is used only in case of
125 'step n' like commands. */
129 /* Target objects which can be transfered using target_read,
130 target_write, et cetera. */
134 /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */
136 /* SPU target specific transfer. See "spu-tdep.c". */
138 /* Transfer up-to LEN bytes of memory starting at OFFSET. */
139 TARGET_OBJECT_MEMORY
,
140 /* Memory, avoiding GDB's data cache and trusting the executable.
141 Target implementations of to_xfer_partial never need to handle
142 this object, and most callers should not use it. */
143 TARGET_OBJECT_RAW_MEMORY
,
144 /* Memory known to be part of the target's stack. This is cached even
145 if it is not in a region marked as such, since it is known to be
147 TARGET_OBJECT_STACK_MEMORY
,
148 /* Memory known to be part of the target code. This is cached even
149 if it is not in a region marked as such. */
150 TARGET_OBJECT_CODE_MEMORY
,
151 /* Kernel Unwind Table. See "ia64-tdep.c". */
152 TARGET_OBJECT_UNWIND_TABLE
,
153 /* Transfer auxilliary vector. */
155 /* StackGhost cookie. See "sparc-tdep.c". */
156 TARGET_OBJECT_WCOOKIE
,
157 /* Target memory map in XML format. */
158 TARGET_OBJECT_MEMORY_MAP
,
159 /* Flash memory. This object can be used to write contents to
160 a previously erased flash memory. Using it without erasing
161 flash can have unexpected results. Addresses are physical
162 address on target, and not relative to flash start. */
164 /* Available target-specific features, e.g. registers and coprocessors.
165 See "target-descriptions.c". ANNEX should never be empty. */
166 TARGET_OBJECT_AVAILABLE_FEATURES
,
167 /* Currently loaded libraries, in XML format. */
168 TARGET_OBJECT_LIBRARIES
,
169 /* Currently loaded libraries specific for SVR4 systems, in XML format. */
170 TARGET_OBJECT_LIBRARIES_SVR4
,
171 /* Currently loaded libraries specific to AIX systems, in XML format. */
172 TARGET_OBJECT_LIBRARIES_AIX
,
173 /* Get OS specific data. The ANNEX specifies the type (running
174 processes, etc.). The data being transfered is expected to follow
175 the DTD specified in features/osdata.dtd. */
176 TARGET_OBJECT_OSDATA
,
177 /* Extra signal info. Usually the contents of `siginfo_t' on unix
179 TARGET_OBJECT_SIGNAL_INFO
,
180 /* The list of threads that are being debugged. */
181 TARGET_OBJECT_THREADS
,
182 /* Collected static trace data. */
183 TARGET_OBJECT_STATIC_TRACE_DATA
,
184 /* The HP-UX registers (those that can be obtained or modified by using
185 the TT_LWP_RUREGS/TT_LWP_WUREGS ttrace requests). */
186 TARGET_OBJECT_HPUX_UREGS
,
187 /* The HP-UX shared library linkage pointer. ANNEX should be a string
188 image of the code address whose linkage pointer we are looking for.
190 The size of the data transfered is always 8 bytes (the size of an
192 TARGET_OBJECT_HPUX_SOLIB_GOT
,
193 /* Traceframe info, in XML format. */
194 TARGET_OBJECT_TRACEFRAME_INFO
,
195 /* Load maps for FDPIC systems. */
197 /* Darwin dynamic linker info data. */
198 TARGET_OBJECT_DARWIN_DYLD_INFO
,
199 /* OpenVMS Unwind Information Block. */
200 TARGET_OBJECT_OPENVMS_UIB
,
201 /* Branch trace data, in XML format. */
203 /* Possible future objects: TARGET_OBJECT_FILE, ... */
206 /* Possible error codes returned by target_xfer_partial, etc. */
208 enum target_xfer_error
210 /* Generic I/O error. Note that it's important that this is '-1',
211 as we still have target_xfer-related code returning hardcoded
213 TARGET_XFER_E_IO
= -1,
215 /* Transfer failed because the piece of the object requested is
217 TARGET_XFER_E_UNAVAILABLE
= -2,
219 /* Keep list in sync with target_xfer_error_to_string. */
222 /* Return the string form of ERR. */
224 extern const char *target_xfer_error_to_string (enum target_xfer_error err
);
226 /* Enumeration of the kinds of traceframe searches that a target may
227 be able to perform. */
238 typedef struct static_tracepoint_marker
*static_tracepoint_marker_p
;
239 DEF_VEC_P(static_tracepoint_marker_p
);
242 target_xfer_partial_ftype (struct target_ops
*ops
,
243 enum target_object object
,
246 const gdb_byte
*writebuf
,
250 /* Request that OPS transfer up to LEN 8-bit bytes of the target's
251 OBJECT. The OFFSET, for a seekable object, specifies the
252 starting point. The ANNEX can be used to provide additional
253 data-specific information to the target.
255 Return the number of bytes actually transfered, or a negative error
256 code (an 'enum target_xfer_error' value) if the transfer is not
257 supported or otherwise fails. Return of a positive value less than
258 LEN indicates that no further transfer is possible. Unlike the raw
259 to_xfer_partial interface, callers of these functions do not need
260 to retry partial transfers. */
262 extern LONGEST
target_read (struct target_ops
*ops
,
263 enum target_object object
,
264 const char *annex
, gdb_byte
*buf
,
265 ULONGEST offset
, LONGEST len
);
267 struct memory_read_result
269 /* First address that was read. */
271 /* Past-the-end address. */
276 typedef struct memory_read_result memory_read_result_s
;
277 DEF_VEC_O(memory_read_result_s
);
279 extern void free_memory_read_result_vector (void *);
281 extern VEC(memory_read_result_s
)* read_memory_robust (struct target_ops
*ops
,
285 extern LONGEST
target_write (struct target_ops
*ops
,
286 enum target_object object
,
287 const char *annex
, const gdb_byte
*buf
,
288 ULONGEST offset
, LONGEST len
);
290 /* Similar to target_write, except that it also calls PROGRESS with
291 the number of bytes written and the opaque BATON after every
292 successful partial write (and before the first write). This is
293 useful for progress reporting and user interaction while writing
294 data. To abort the transfer, the progress callback can throw an
297 LONGEST
target_write_with_progress (struct target_ops
*ops
,
298 enum target_object object
,
299 const char *annex
, const gdb_byte
*buf
,
300 ULONGEST offset
, LONGEST len
,
301 void (*progress
) (ULONGEST
, void *),
304 /* Wrapper to perform a full read of unknown size. OBJECT/ANNEX will
305 be read using OPS. The return value will be -1 if the transfer
306 fails or is not supported; 0 if the object is empty; or the length
307 of the object otherwise. If a positive value is returned, a
308 sufficiently large buffer will be allocated using xmalloc and
309 returned in *BUF_P containing the contents of the object.
311 This method should be used for objects sufficiently small to store
312 in a single xmalloc'd buffer, when no fixed bound on the object's
313 size is known in advance. Don't try to read TARGET_OBJECT_MEMORY
314 through this function. */
316 extern LONGEST
target_read_alloc (struct target_ops
*ops
,
317 enum target_object object
,
318 const char *annex
, gdb_byte
**buf_p
);
320 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
321 returned as a string, allocated using xmalloc. If an error occurs
322 or the transfer is unsupported, NULL is returned. Empty objects
323 are returned as allocated but empty strings. A warning is issued
324 if the result contains any embedded NUL bytes. */
326 extern char *target_read_stralloc (struct target_ops
*ops
,
327 enum target_object object
,
330 /* See target_ops->to_xfer_partial. */
331 extern target_xfer_partial_ftype target_xfer_partial
;
333 /* Wrappers to target read/write that perform memory transfers. They
334 throw an error if the memory transfer fails.
336 NOTE: cagney/2003-10-23: The naming schema is lifted from
337 "frame.h". The parameter order is lifted from get_frame_memory,
338 which in turn lifted it from read_memory. */
340 extern void get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
,
341 gdb_byte
*buf
, LONGEST len
);
342 extern ULONGEST
get_target_memory_unsigned (struct target_ops
*ops
,
343 CORE_ADDR addr
, int len
,
344 enum bfd_endian byte_order
);
346 struct thread_info
; /* fwd decl for parameter list below: */
348 /* The type of the callback to the to_async method. */
350 typedef void async_callback_ftype (enum inferior_event_type event_type
,
355 struct target_ops
*beneath
; /* To the target under this one. */
356 char *to_shortname
; /* Name this target type */
357 char *to_longname
; /* Name for printing */
358 char *to_doc
; /* Documentation. Does not include trailing
359 newline, and starts with a one-line descrip-
360 tion (probably similar to to_longname). */
361 /* Per-target scratch pad. */
363 /* The open routine takes the rest of the parameters from the
364 command, and (if successful) pushes a new target onto the
365 stack. Targets should supply this routine, if only to provide
367 void (*to_open
) (char *, int);
368 /* Old targets with a static target vector provide "to_close".
369 New re-entrant targets provide "to_xclose" and that is expected
370 to xfree everything (including the "struct target_ops"). */
371 void (*to_xclose
) (struct target_ops
*targ
);
372 void (*to_close
) (void);
373 void (*to_attach
) (struct target_ops
*ops
, char *, int);
374 void (*to_post_attach
) (int);
375 void (*to_detach
) (struct target_ops
*ops
, const char *, int);
376 void (*to_disconnect
) (struct target_ops
*, char *, int);
377 void (*to_resume
) (struct target_ops
*, ptid_t
, int, enum gdb_signal
);
378 ptid_t (*to_wait
) (struct target_ops
*,
379 ptid_t
, struct target_waitstatus
*, int);
380 void (*to_fetch_registers
) (struct target_ops
*, struct regcache
*, int);
381 void (*to_store_registers
) (struct target_ops
*, struct regcache
*, int);
382 void (*to_prepare_to_store
) (struct target_ops
*, struct regcache
*);
384 /* Transfer LEN bytes of memory between GDB address MYADDR and
385 target address MEMADDR. If WRITE, transfer them to the target, else
386 transfer them from the target. TARGET is the target from which we
389 Return value, N, is one of the following:
391 0 means that we can't handle this. If errno has been set, it is the
392 error which prevented us from doing it (FIXME: What about bfd_error?).
394 positive (call it N) means that we have transferred N bytes
395 starting at MEMADDR. We might be able to handle more bytes
396 beyond this length, but no promises.
398 negative (call its absolute value N) means that we cannot
399 transfer right at MEMADDR, but we could transfer at least
400 something at MEMADDR + N.
402 NOTE: cagney/2004-10-01: This has been entirely superseeded by
403 to_xfer_partial and inferior inheritance. */
405 int (*deprecated_xfer_memory
) (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
407 struct mem_attrib
*attrib
,
408 struct target_ops
*target
);
410 void (*to_files_info
) (struct target_ops
*);
411 int (*to_insert_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
412 int (*to_remove_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
413 int (*to_can_use_hw_breakpoint
) (int, int, int);
414 int (*to_ranged_break_num_registers
) (struct target_ops
*);
415 int (*to_insert_hw_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
416 int (*to_remove_hw_breakpoint
) (struct gdbarch
*, struct bp_target_info
*);
418 /* Documentation of what the two routines below are expected to do is
419 provided with the corresponding target_* macros. */
420 int (*to_remove_watchpoint
) (CORE_ADDR
, int, int, struct expression
*);
421 int (*to_insert_watchpoint
) (CORE_ADDR
, int, int, struct expression
*);
423 int (*to_insert_mask_watchpoint
) (struct target_ops
*,
424 CORE_ADDR
, CORE_ADDR
, int);
425 int (*to_remove_mask_watchpoint
) (struct target_ops
*,
426 CORE_ADDR
, CORE_ADDR
, int);
427 int (*to_stopped_by_watchpoint
) (void);
428 int to_have_steppable_watchpoint
;
429 int to_have_continuable_watchpoint
;
430 int (*to_stopped_data_address
) (struct target_ops
*, CORE_ADDR
*);
431 int (*to_watchpoint_addr_within_range
) (struct target_ops
*,
432 CORE_ADDR
, CORE_ADDR
, int);
434 /* Documentation of this routine is provided with the corresponding
436 int (*to_region_ok_for_hw_watchpoint
) (CORE_ADDR
, int);
438 int (*to_can_accel_watchpoint_condition
) (CORE_ADDR
, int, int,
439 struct expression
*);
440 int (*to_masked_watch_num_registers
) (struct target_ops
*,
441 CORE_ADDR
, CORE_ADDR
);
442 void (*to_terminal_init
) (void);
443 void (*to_terminal_inferior
) (void);
444 void (*to_terminal_ours_for_output
) (void);
445 void (*to_terminal_ours
) (void);
446 void (*to_terminal_save_ours
) (void);
447 void (*to_terminal_info
) (const char *, int);
448 void (*to_kill
) (struct target_ops
*);
449 void (*to_load
) (char *, int);
450 void (*to_create_inferior
) (struct target_ops
*,
451 char *, char *, char **, int);
452 void (*to_post_startup_inferior
) (ptid_t
);
453 int (*to_insert_fork_catchpoint
) (int);
454 int (*to_remove_fork_catchpoint
) (int);
455 int (*to_insert_vfork_catchpoint
) (int);
456 int (*to_remove_vfork_catchpoint
) (int);
457 int (*to_follow_fork
) (struct target_ops
*, int, int);
458 int (*to_insert_exec_catchpoint
) (int);
459 int (*to_remove_exec_catchpoint
) (int);
460 int (*to_set_syscall_catchpoint
) (int, int, int, int, int *);
461 int (*to_has_exited
) (int, int, int *);
462 void (*to_mourn_inferior
) (struct target_ops
*);
463 int (*to_can_run
) (void);
465 /* Documentation of this routine is provided with the corresponding
467 void (*to_pass_signals
) (int, unsigned char *);
469 /* Documentation of this routine is provided with the
470 corresponding target_* function. */
471 void (*to_program_signals
) (int, unsigned char *);
473 int (*to_thread_alive
) (struct target_ops
*, ptid_t ptid
);
474 void (*to_find_new_threads
) (struct target_ops
*);
475 char *(*to_pid_to_str
) (struct target_ops
*, ptid_t
);
476 char *(*to_extra_thread_info
) (struct thread_info
*);
477 char *(*to_thread_name
) (struct thread_info
*);
478 void (*to_stop
) (ptid_t
);
479 void (*to_rcmd
) (char *command
, struct ui_file
*output
);
480 char *(*to_pid_to_exec_file
) (int pid
);
481 void (*to_log_command
) (const char *);
482 struct target_section_table
*(*to_get_section_table
) (struct target_ops
*);
483 enum strata to_stratum
;
484 int (*to_has_all_memory
) (struct target_ops
*);
485 int (*to_has_memory
) (struct target_ops
*);
486 int (*to_has_stack
) (struct target_ops
*);
487 int (*to_has_registers
) (struct target_ops
*);
488 int (*to_has_execution
) (struct target_ops
*, ptid_t
);
489 int to_has_thread_control
; /* control thread execution */
490 int to_attach_no_wait
;
491 /* ASYNC target controls */
492 int (*to_can_async_p
) (void);
493 int (*to_is_async_p
) (void);
494 void (*to_async
) (async_callback_ftype
*, void *);
495 int (*to_supports_non_stop
) (void);
496 /* find_memory_regions support method for gcore */
497 int (*to_find_memory_regions
) (find_memory_region_ftype func
, void *data
);
498 /* make_corefile_notes support method for gcore */
499 char * (*to_make_corefile_notes
) (bfd
*, int *);
500 /* get_bookmark support method for bookmarks */
501 gdb_byte
* (*to_get_bookmark
) (char *, int);
502 /* goto_bookmark support method for bookmarks */
503 void (*to_goto_bookmark
) (gdb_byte
*, int);
504 /* Return the thread-local address at OFFSET in the
505 thread-local storage for the thread PTID and the shared library
506 or executable file given by OBJFILE. If that block of
507 thread-local storage hasn't been allocated yet, this function
508 may return an error. */
509 CORE_ADDR (*to_get_thread_local_address
) (struct target_ops
*ops
,
511 CORE_ADDR load_module_addr
,
514 /* Request that OPS transfer up to LEN 8-bit bytes of the target's
515 OBJECT. The OFFSET, for a seekable object, specifies the
516 starting point. The ANNEX can be used to provide additional
517 data-specific information to the target.
519 Return the number of bytes actually transfered, zero when no
520 further transfer is possible, and a negative error code (really
521 an 'enum target_xfer_error' value) when the transfer is not
522 supported. Return of a positive value smaller than LEN does
523 not indicate the end of the object, only the end of the
524 transfer; higher level code should continue transferring if
525 desired. This is handled in target.c.
527 The interface does not support a "retry" mechanism. Instead it
528 assumes that at least one byte will be transfered on each
531 NOTE: cagney/2003-10-17: The current interface can lead to
532 fragmented transfers. Lower target levels should not implement
533 hacks, such as enlarging the transfer, in an attempt to
534 compensate for this. Instead, the target stack should be
535 extended so that it implements supply/collect methods and a
536 look-aside object cache. With that available, the lowest
537 target can safely and freely "push" data up the stack.
539 See target_read and target_write for more information. One,
540 and only one, of readbuf or writebuf must be non-NULL. */
542 LONGEST (*to_xfer_partial
) (struct target_ops
*ops
,
543 enum target_object object
, const char *annex
,
544 gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
545 ULONGEST offset
, ULONGEST len
);
547 /* Returns the memory map for the target. A return value of NULL
548 means that no memory map is available. If a memory address
549 does not fall within any returned regions, it's assumed to be
550 RAM. The returned memory regions should not overlap.
552 The order of regions does not matter; target_memory_map will
553 sort regions by starting address. For that reason, this
554 function should not be called directly except via
557 This method should not cache data; if the memory map could
558 change unexpectedly, it should be invalidated, and higher
559 layers will re-fetch it. */
560 VEC(mem_region_s
) *(*to_memory_map
) (struct target_ops
*);
562 /* Erases the region of flash memory starting at ADDRESS, of
565 Precondition: both ADDRESS and ADDRESS+LENGTH should be aligned
566 on flash block boundaries, as reported by 'to_memory_map'. */
567 void (*to_flash_erase
) (struct target_ops
*,
568 ULONGEST address
, LONGEST length
);
570 /* Finishes a flash memory write sequence. After this operation
571 all flash memory should be available for writing and the result
572 of reading from areas written by 'to_flash_write' should be
573 equal to what was written. */
574 void (*to_flash_done
) (struct target_ops
*);
576 /* Describe the architecture-specific features of this target.
577 Returns the description found, or NULL if no description
579 const struct target_desc
*(*to_read_description
) (struct target_ops
*ops
);
581 /* Build the PTID of the thread on which a given task is running,
582 based on LWP and THREAD. These values are extracted from the
583 task Private_Data section of the Ada Task Control Block, and
584 their interpretation depends on the target. */
585 ptid_t (*to_get_ada_task_ptid
) (long lwp
, long thread
);
587 /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
588 Return 0 if *READPTR is already at the end of the buffer.
589 Return -1 if there is insufficient buffer for a whole entry.
590 Return 1 if an entry was read into *TYPEP and *VALP. */
591 int (*to_auxv_parse
) (struct target_ops
*ops
, gdb_byte
**readptr
,
592 gdb_byte
*endptr
, CORE_ADDR
*typep
, CORE_ADDR
*valp
);
594 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
595 sequence of bytes in PATTERN with length PATTERN_LEN.
597 The result is 1 if found, 0 if not found, and -1 if there was an error
598 requiring halting of the search (e.g. memory read error).
599 If the pattern is found the address is recorded in FOUND_ADDRP. */
600 int (*to_search_memory
) (struct target_ops
*ops
,
601 CORE_ADDR start_addr
, ULONGEST search_space_len
,
602 const gdb_byte
*pattern
, ULONGEST pattern_len
,
603 CORE_ADDR
*found_addrp
);
605 /* Can target execute in reverse? */
606 int (*to_can_execute_reverse
) (void);
608 /* The direction the target is currently executing. Must be
609 implemented on targets that support reverse execution and async
610 mode. The default simply returns forward execution. */
611 enum exec_direction_kind (*to_execution_direction
) (void);
613 /* Does this target support debugging multiple processes
615 int (*to_supports_multi_process
) (void);
617 /* Does this target support enabling and disabling tracepoints while a trace
618 experiment is running? */
619 int (*to_supports_enable_disable_tracepoint
) (void);
621 /* Does this target support disabling address space randomization? */
622 int (*to_supports_disable_randomization
) (void);
624 /* Does this target support the tracenz bytecode for string collection? */
625 int (*to_supports_string_tracing
) (void);
627 /* Does this target support evaluation of breakpoint conditions on its
629 int (*to_supports_evaluation_of_breakpoint_conditions
) (void);
631 /* Does this target support evaluation of breakpoint commands on its
633 int (*to_can_run_breakpoint_commands
) (void);
635 /* Determine current architecture of thread PTID.
637 The target is supposed to determine the architecture of the code where
638 the target is currently stopped at (on Cell, if a target is in spu_run,
639 to_thread_architecture would return SPU, otherwise PPC32 or PPC64).
640 This is architecture used to perform decr_pc_after_break adjustment,
641 and also determines the frame architecture of the innermost frame.
642 ptrace operations need to operate according to target_gdbarch ().
644 The default implementation always returns target_gdbarch (). */
645 struct gdbarch
*(*to_thread_architecture
) (struct target_ops
*, ptid_t
);
647 /* Determine current address space of thread PTID.
649 The default implementation always returns the inferior's
651 struct address_space
*(*to_thread_address_space
) (struct target_ops
*,
654 /* Target file operations. */
656 /* Open FILENAME on the target, using FLAGS and MODE. Return a
657 target file descriptor, or -1 if an error occurs (and set
659 int (*to_fileio_open
) (const char *filename
, int flags
, int mode
,
662 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
663 Return the number of bytes written, or -1 if an error occurs
664 (and set *TARGET_ERRNO). */
665 int (*to_fileio_pwrite
) (int fd
, const gdb_byte
*write_buf
, int len
,
666 ULONGEST offset
, int *target_errno
);
668 /* Read up to LEN bytes FD on the target into READ_BUF.
669 Return the number of bytes read, or -1 if an error occurs
670 (and set *TARGET_ERRNO). */
671 int (*to_fileio_pread
) (int fd
, gdb_byte
*read_buf
, int len
,
672 ULONGEST offset
, int *target_errno
);
674 /* Close FD on the target. Return 0, or -1 if an error occurs
675 (and set *TARGET_ERRNO). */
676 int (*to_fileio_close
) (int fd
, int *target_errno
);
678 /* Unlink FILENAME on the target. Return 0, or -1 if an error
679 occurs (and set *TARGET_ERRNO). */
680 int (*to_fileio_unlink
) (const char *filename
, int *target_errno
);
682 /* Read value of symbolic link FILENAME on the target. Return a
683 null-terminated string allocated via xmalloc, or NULL if an error
684 occurs (and set *TARGET_ERRNO). */
685 char *(*to_fileio_readlink
) (const char *filename
, int *target_errno
);
688 /* Implement the "info proc" command. */
689 void (*to_info_proc
) (struct target_ops
*, char *, enum info_proc_what
);
691 /* Tracepoint-related operations. */
693 /* Prepare the target for a tracing run. */
694 void (*to_trace_init
) (void);
696 /* Send full details of a tracepoint location to the target. */
697 void (*to_download_tracepoint
) (struct bp_location
*location
);
699 /* Is the target able to download tracepoint locations in current
701 int (*to_can_download_tracepoint
) (void);
703 /* Send full details of a trace state variable to the target. */
704 void (*to_download_trace_state_variable
) (struct trace_state_variable
*tsv
);
706 /* Enable a tracepoint on the target. */
707 void (*to_enable_tracepoint
) (struct bp_location
*location
);
709 /* Disable a tracepoint on the target. */
710 void (*to_disable_tracepoint
) (struct bp_location
*location
);
712 /* Inform the target info of memory regions that are readonly
713 (such as text sections), and so it should return data from
714 those rather than look in the trace buffer. */
715 void (*to_trace_set_readonly_regions
) (void);
717 /* Start a trace run. */
718 void (*to_trace_start
) (void);
720 /* Get the current status of a tracing run. */
721 int (*to_get_trace_status
) (struct trace_status
*ts
);
723 void (*to_get_tracepoint_status
) (struct breakpoint
*tp
,
724 struct uploaded_tp
*utp
);
726 /* Stop a trace run. */
727 void (*to_trace_stop
) (void);
729 /* Ask the target to find a trace frame of the given type TYPE,
730 using NUM, ADDR1, and ADDR2 as search parameters. Returns the
731 number of the trace frame, and also the tracepoint number at
732 TPP. If no trace frame matches, return -1. May throw if the
734 int (*to_trace_find
) (enum trace_find_type type
, int num
,
735 CORE_ADDR addr1
, CORE_ADDR addr2
, int *tpp
);
737 /* Get the value of the trace state variable number TSV, returning
738 1 if the value is known and writing the value itself into the
739 location pointed to by VAL, else returning 0. */
740 int (*to_get_trace_state_variable_value
) (int tsv
, LONGEST
*val
);
742 int (*to_save_trace_data
) (const char *filename
);
744 int (*to_upload_tracepoints
) (struct uploaded_tp
**utpp
);
746 int (*to_upload_trace_state_variables
) (struct uploaded_tsv
**utsvp
);
748 LONGEST (*to_get_raw_trace_data
) (gdb_byte
*buf
,
749 ULONGEST offset
, LONGEST len
);
751 /* Get the minimum length of instruction on which a fast tracepoint
752 may be set on the target. If this operation is unsupported,
753 return -1. If for some reason the minimum length cannot be
754 determined, return 0. */
755 int (*to_get_min_fast_tracepoint_insn_len
) (void);
757 /* Set the target's tracing behavior in response to unexpected
758 disconnection - set VAL to 1 to keep tracing, 0 to stop. */
759 void (*to_set_disconnected_tracing
) (int val
);
760 void (*to_set_circular_trace_buffer
) (int val
);
761 /* Set the size of trace buffer in the target. */
762 void (*to_set_trace_buffer_size
) (LONGEST val
);
764 /* Add/change textual notes about the trace run, returning 1 if
765 successful, 0 otherwise. */
766 int (*to_set_trace_notes
) (const char *user
, const char *notes
,
767 const char *stopnotes
);
769 /* Return the processor core that thread PTID was last seen on.
770 This information is updated only when:
771 - update_thread_list is called
773 If the core cannot be determined -- either for the specified
774 thread, or right now, or in this debug session, or for this
775 target -- return -1. */
776 int (*to_core_of_thread
) (struct target_ops
*, ptid_t ptid
);
778 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range
779 matches the contents of [DATA,DATA+SIZE). Returns 1 if there's
780 a match, 0 if there's a mismatch, and -1 if an error is
781 encountered while reading memory. */
782 int (*to_verify_memory
) (struct target_ops
*, const gdb_byte
*data
,
783 CORE_ADDR memaddr
, ULONGEST size
);
785 /* Return the address of the start of the Thread Information Block
786 a Windows OS specific feature. */
787 int (*to_get_tib_address
) (ptid_t ptid
, CORE_ADDR
*addr
);
789 /* Send the new settings of write permission variables. */
790 void (*to_set_permissions
) (void);
792 /* Look for a static tracepoint marker at ADDR, and fill in MARKER
793 with its details. Return 1 on success, 0 on failure. */
794 int (*to_static_tracepoint_marker_at
) (CORE_ADDR
,
795 struct static_tracepoint_marker
*marker
);
797 /* Return a vector of all tracepoints markers string id ID, or all
798 markers if ID is NULL. */
799 VEC(static_tracepoint_marker_p
) *(*to_static_tracepoint_markers_by_strid
)
802 /* Return a traceframe info object describing the current
803 traceframe's contents. If the target doesn't support
804 traceframe info, return NULL. If the current traceframe is not
805 selected (the current traceframe number is -1), the target can
806 choose to return either NULL or an empty traceframe info. If
807 NULL is returned, for example in remote target, GDB will read
808 from the live inferior. If an empty traceframe info is
809 returned, for example in tfile target, which means the
810 traceframe info is available, but the requested memory is not
811 available in it. GDB will try to see if the requested memory
812 is available in the read-only sections. This method should not
813 cache data; higher layers take care of caching, invalidating,
814 and re-fetching when necessary. */
815 struct traceframe_info
*(*to_traceframe_info
) (void);
817 /* Ask the target to use or not to use agent according to USE. Return 1
818 successful, 0 otherwise. */
819 int (*to_use_agent
) (int use
);
821 /* Is the target able to use agent in current state? */
822 int (*to_can_use_agent
) (void);
824 /* Check whether the target supports branch tracing. */
825 int (*to_supports_btrace
) (void);
827 /* Enable branch tracing for PTID and allocate a branch trace target
828 information struct for reading and for disabling branch trace. */
829 struct btrace_target_info
*(*to_enable_btrace
) (ptid_t ptid
);
831 /* Disable branch tracing and deallocate TINFO. */
832 void (*to_disable_btrace
) (struct btrace_target_info
*tinfo
);
834 /* Disable branch tracing and deallocate TINFO. This function is similar
835 to to_disable_btrace, except that it is called during teardown and is
836 only allowed to perform actions that are safe. A counter-example would
837 be attempting to talk to a remote target. */
838 void (*to_teardown_btrace
) (struct btrace_target_info
*tinfo
);
840 /* Read branch trace data. */
841 VEC (btrace_block_s
) *(*to_read_btrace
) (struct btrace_target_info
*,
842 enum btrace_read_type
);
844 /* Stop trace recording. */
845 void (*to_stop_recording
) (void);
847 /* Print information about the recording. */
848 void (*to_info_record
) (void);
850 /* Save the recorded execution trace into a file. */
851 void (*to_save_record
) (const char *filename
);
853 /* Delete the recorded execution trace from the current position onwards. */
854 void (*to_delete_record
) (void);
856 /* Query if the record target is currently replaying. */
857 int (*to_record_is_replaying
) (void);
859 /* Go to the begin of the execution trace. */
860 void (*to_goto_record_begin
) (void);
862 /* Go to the end of the execution trace. */
863 void (*to_goto_record_end
) (void);
865 /* Go to a specific location in the recorded execution trace. */
866 void (*to_goto_record
) (ULONGEST insn
);
868 /* Disassemble SIZE instructions in the recorded execution trace from
869 the current position.
870 If SIZE < 0, disassemble abs (SIZE) preceding instructions; otherwise,
871 disassemble SIZE succeeding instructions. */
872 void (*to_insn_history
) (int size
, int flags
);
874 /* Disassemble SIZE instructions in the recorded execution trace around
876 If SIZE < 0, disassemble abs (SIZE) instructions before FROM; otherwise,
877 disassemble SIZE instructions after FROM. */
878 void (*to_insn_history_from
) (ULONGEST from
, int size
, int flags
);
880 /* Disassemble a section of the recorded execution trace from instruction
881 BEGIN (inclusive) to instruction END (inclusive). */
882 void (*to_insn_history_range
) (ULONGEST begin
, ULONGEST end
, int flags
);
884 /* Print a function trace of the recorded execution trace.
885 If SIZE < 0, print abs (SIZE) preceding functions; otherwise, print SIZE
886 succeeding functions. */
887 void (*to_call_history
) (int size
, int flags
);
889 /* Print a function trace of the recorded execution trace starting
891 If SIZE < 0, print abs (SIZE) functions before FROM; otherwise, print
892 SIZE functions after FROM. */
893 void (*to_call_history_from
) (ULONGEST begin
, int size
, int flags
);
895 /* Print a function trace of an execution trace section from function BEGIN
896 (inclusive) to function END (inclusive). */
897 void (*to_call_history_range
) (ULONGEST begin
, ULONGEST end
, int flags
);
899 /* Nonzero if TARGET_OBJECT_LIBRARIES_SVR4 may be read with a
901 int (*to_augmented_libraries_svr4_read
) (void);
904 /* Need sub-structure for target machine related rather than comm related?
908 /* Magic number for checking ops size. If a struct doesn't end with this
909 number, somebody changed the declaration but didn't change all the
910 places that initialize one. */
912 #define OPS_MAGIC 3840
914 /* The ops structure for our "current" target process. This should
915 never be NULL. If there is no target, it points to the dummy_target. */
917 extern struct target_ops current_target
;
919 /* Define easy words for doing these operations on our current target. */
921 #define target_shortname (current_target.to_shortname)
922 #define target_longname (current_target.to_longname)
924 /* Does whatever cleanup is required for a target that we are no
925 longer going to be calling. This routine is automatically always
926 called after popping the target off the target stack - the target's
927 own methods are no longer available through the target vector.
928 Closing file descriptors and freeing all memory allocated memory are
929 typical things it should do. */
931 void target_close (struct target_ops
*targ
);
933 /* Attaches to a process on the target side. Arguments are as passed
934 to the `attach' command by the user. This routine can be called
935 when the target is not on the target-stack, if the target_can_run
936 routine returns 1; in that case, it must push itself onto the stack.
937 Upon exit, the target should be ready for normal operations, and
938 should be ready to deliver the status of the process immediately
939 (without waiting) to an upcoming target_wait call. */
941 void target_attach (char *, int);
943 /* Some targets don't generate traps when attaching to the inferior,
944 or their target_attach implementation takes care of the waiting.
945 These targets must set to_attach_no_wait. */
947 #define target_attach_no_wait \
948 (current_target.to_attach_no_wait)
950 /* The target_attach operation places a process under debugger control,
951 and stops the process.
953 This operation provides a target-specific hook that allows the
954 necessary bookkeeping to be performed after an attach completes. */
955 #define target_post_attach(pid) \
956 (*current_target.to_post_attach) (pid)
958 /* Takes a program previously attached to and detaches it.
959 The program may resume execution (some targets do, some don't) and will
960 no longer stop on signals, etc. We better not have left any breakpoints
961 in the program or it'll die when it hits one. ARGS is arguments
962 typed by the user (e.g. a signal to send the process). FROM_TTY
963 says whether to be verbose or not. */
965 extern void target_detach (const char *, int);
967 /* Disconnect from the current target without resuming it (leaving it
968 waiting for a debugger). */
970 extern void target_disconnect (char *, int);
972 /* Resume execution of the target process PTID (or a group of
973 threads). STEP says whether to single-step or to run free; SIGGNAL
974 is the signal to be given to the target, or GDB_SIGNAL_0 for no
975 signal. The caller may not pass GDB_SIGNAL_DEFAULT. A specific
976 PTID means `step/resume only this process id'. A wildcard PTID
977 (all threads, or all threads of process) means `step/resume
978 INFERIOR_PTID, and let other threads (for which the wildcard PTID
979 matches) resume with their 'thread->suspend.stop_signal' signal
980 (usually GDB_SIGNAL_0) if it is in "pass" state, or with no signal
981 if in "no pass" state. */
983 extern void target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
);
985 /* Wait for process pid to do something. PTID = -1 to wait for any
986 pid to do something. Return pid of child, or -1 in case of error;
987 store status through argument pointer STATUS. Note that it is
988 _NOT_ OK to throw_exception() out of target_wait() without popping
989 the debugging target from the stack; GDB isn't prepared to get back
990 to the prompt with a debugging target but without the frame cache,
991 stop_pc, etc., set up. OPTIONS is a bitwise OR of TARGET_W*
994 extern ptid_t
target_wait (ptid_t ptid
, struct target_waitstatus
*status
,
997 /* Fetch at least register REGNO, or all regs if regno == -1. No result. */
999 extern void target_fetch_registers (struct regcache
*regcache
, int regno
);
1001 /* Store at least register REGNO, or all regs if REGNO == -1.
1002 It can store as many registers as it wants to, so target_prepare_to_store
1003 must have been previously called. Calls error() if there are problems. */
1005 extern void target_store_registers (struct regcache
*regcache
, int regs
);
1007 /* Get ready to modify the registers array. On machines which store
1008 individual registers, this doesn't need to do anything. On machines
1009 which store all the registers in one fell swoop, this makes sure
1010 that REGISTERS contains all the registers from the program being
1013 #define target_prepare_to_store(regcache) \
1014 (*current_target.to_prepare_to_store) (¤t_target, regcache)
1016 /* Determine current address space of thread PTID. */
1018 struct address_space
*target_thread_address_space (ptid_t
);
1020 /* Implement the "info proc" command. This returns one if the request
1021 was handled, and zero otherwise. It can also throw an exception if
1022 an error was encountered while attempting to handle the
1025 int target_info_proc (char *, enum info_proc_what
);
1027 /* Returns true if this target can debug multiple processes
1030 #define target_supports_multi_process() \
1031 (*current_target.to_supports_multi_process) ()
1033 /* Returns true if this target can disable address space randomization. */
1035 int target_supports_disable_randomization (void);
1037 /* Returns true if this target can enable and disable tracepoints
1038 while a trace experiment is running. */
1040 #define target_supports_enable_disable_tracepoint() \
1041 (*current_target.to_supports_enable_disable_tracepoint) ()
1043 #define target_supports_string_tracing() \
1044 (*current_target.to_supports_string_tracing) ()
1046 /* Returns true if this target can handle breakpoint conditions
1049 #define target_supports_evaluation_of_breakpoint_conditions() \
1050 (*current_target.to_supports_evaluation_of_breakpoint_conditions) ()
1052 /* Returns true if this target can handle breakpoint commands
1055 #define target_can_run_breakpoint_commands() \
1056 (*current_target.to_can_run_breakpoint_commands) ()
1058 extern int target_read_string (CORE_ADDR
, char **, int, int *);
1060 extern int target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
1063 extern int target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
1066 extern int target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
);
1068 extern int target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
);
1070 extern int target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
,
1073 extern int target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
,
1076 /* Fetches the target's memory map. If one is found it is sorted
1077 and returned, after some consistency checking. Otherwise, NULL
1079 VEC(mem_region_s
) *target_memory_map (void);
1081 /* Erase the specified flash region. */
1082 void target_flash_erase (ULONGEST address
, LONGEST length
);
1084 /* Finish a sequence of flash operations. */
1085 void target_flash_done (void);
1087 /* Describes a request for a memory write operation. */
1088 struct memory_write_request
1090 /* Begining address that must be written. */
1092 /* Past-the-end address. */
1094 /* The data to write. */
1096 /* A callback baton for progress reporting for this request. */
1099 typedef struct memory_write_request memory_write_request_s
;
1100 DEF_VEC_O(memory_write_request_s
);
1102 /* Enumeration specifying different flash preservation behaviour. */
1103 enum flash_preserve_mode
1109 /* Write several memory blocks at once. This version can be more
1110 efficient than making several calls to target_write_memory, in
1111 particular because it can optimize accesses to flash memory.
1113 Moreover, this is currently the only memory access function in gdb
1114 that supports writing to flash memory, and it should be used for
1115 all cases where access to flash memory is desirable.
1117 REQUESTS is the vector (see vec.h) of memory_write_request.
1118 PRESERVE_FLASH_P indicates what to do with blocks which must be
1119 erased, but not completely rewritten.
1120 PROGRESS_CB is a function that will be periodically called to provide
1121 feedback to user. It will be called with the baton corresponding
1122 to the request currently being written. It may also be called
1123 with a NULL baton, when preserved flash sectors are being rewritten.
1125 The function returns 0 on success, and error otherwise. */
1126 int target_write_memory_blocks (VEC(memory_write_request_s
) *requests
,
1127 enum flash_preserve_mode preserve_flash_p
,
1128 void (*progress_cb
) (ULONGEST
, void *));
1130 /* Print a line about the current target. */
1132 #define target_files_info() \
1133 (*current_target.to_files_info) (¤t_target)
1135 /* Insert a hardware breakpoint at address BP_TGT->placed_address in
1136 the target machine. Returns 0 for success, and returns non-zero or
1137 throws an error (with a detailed failure reason error code and
1138 message) otherwise. */
1140 extern int target_insert_breakpoint (struct gdbarch
*gdbarch
,
1141 struct bp_target_info
*bp_tgt
);
1143 /* Remove a breakpoint at address BP_TGT->placed_address in the target
1144 machine. Result is 0 for success, non-zero for error. */
1146 extern int target_remove_breakpoint (struct gdbarch
*gdbarch
,
1147 struct bp_target_info
*bp_tgt
);
1149 /* Initialize the terminal settings we record for the inferior,
1150 before we actually run the inferior. */
1152 #define target_terminal_init() \
1153 (*current_target.to_terminal_init) ()
1155 /* Put the inferior's terminal settings into effect.
1156 This is preparation for starting or resuming the inferior. */
1158 extern void target_terminal_inferior (void);
1160 /* Put some of our terminal settings into effect,
1161 enough to get proper results from our output,
1162 but do not change into or out of RAW mode
1163 so that no input is discarded.
1165 After doing this, either terminal_ours or terminal_inferior
1166 should be called to get back to a normal state of affairs. */
1168 #define target_terminal_ours_for_output() \
1169 (*current_target.to_terminal_ours_for_output) ()
1171 /* Put our terminal settings into effect.
1172 First record the inferior's terminal settings
1173 so they can be restored properly later. */
1175 #define target_terminal_ours() \
1176 (*current_target.to_terminal_ours) ()
1178 /* Save our terminal settings.
1179 This is called from TUI after entering or leaving the curses
1180 mode. Since curses modifies our terminal this call is here
1181 to take this change into account. */
1183 #define target_terminal_save_ours() \
1184 (*current_target.to_terminal_save_ours) ()
1186 /* Print useful information about our terminal status, if such a thing
1189 #define target_terminal_info(arg, from_tty) \
1190 (*current_target.to_terminal_info) (arg, from_tty)
1192 /* Kill the inferior process. Make it go away. */
1194 extern void target_kill (void);
1196 /* Load an executable file into the target process. This is expected
1197 to not only bring new code into the target process, but also to
1198 update GDB's symbol tables to match.
1200 ARG contains command-line arguments, to be broken down with
1201 buildargv (). The first non-switch argument is the filename to
1202 load, FILE; the second is a number (as parsed by strtoul (..., ...,
1203 0)), which is an offset to apply to the load addresses of FILE's
1204 sections. The target may define switches, or other non-switch
1205 arguments, as it pleases. */
1207 extern void target_load (char *arg
, int from_tty
);
1209 /* Start an inferior process and set inferior_ptid to its pid.
1210 EXEC_FILE is the file to run.
1211 ALLARGS is a string containing the arguments to the program.
1212 ENV is the environment vector to pass. Errors reported with error().
1213 On VxWorks and various standalone systems, we ignore exec_file. */
1215 void target_create_inferior (char *exec_file
, char *args
,
1216 char **env
, int from_tty
);
1218 /* Some targets (such as ttrace-based HPUX) don't allow us to request
1219 notification of inferior events such as fork and vork immediately
1220 after the inferior is created. (This because of how gdb gets an
1221 inferior created via invoking a shell to do it. In such a scenario,
1222 if the shell init file has commands in it, the shell will fork and
1223 exec for each of those commands, and we will see each such fork
1226 Such targets will supply an appropriate definition for this function. */
1228 #define target_post_startup_inferior(ptid) \
1229 (*current_target.to_post_startup_inferior) (ptid)
1231 /* On some targets, we can catch an inferior fork or vfork event when
1232 it occurs. These functions insert/remove an already-created
1233 catchpoint for such events. They return 0 for success, 1 if the
1234 catchpoint type is not supported and -1 for failure. */
1236 #define target_insert_fork_catchpoint(pid) \
1237 (*current_target.to_insert_fork_catchpoint) (pid)
1239 #define target_remove_fork_catchpoint(pid) \
1240 (*current_target.to_remove_fork_catchpoint) (pid)
1242 #define target_insert_vfork_catchpoint(pid) \
1243 (*current_target.to_insert_vfork_catchpoint) (pid)
1245 #define target_remove_vfork_catchpoint(pid) \
1246 (*current_target.to_remove_vfork_catchpoint) (pid)
1248 /* If the inferior forks or vforks, this function will be called at
1249 the next resume in order to perform any bookkeeping and fiddling
1250 necessary to continue debugging either the parent or child, as
1251 requested, and releasing the other. Information about the fork
1252 or vfork event is available via get_last_target_status ().
1253 This function returns 1 if the inferior should not be resumed
1254 (i.e. there is another event pending). */
1256 int target_follow_fork (int follow_child
, int detach_fork
);
1258 /* On some targets, we can catch an inferior exec event when it
1259 occurs. These functions insert/remove an already-created
1260 catchpoint for such events. They return 0 for success, 1 if the
1261 catchpoint type is not supported and -1 for failure. */
1263 #define target_insert_exec_catchpoint(pid) \
1264 (*current_target.to_insert_exec_catchpoint) (pid)
1266 #define target_remove_exec_catchpoint(pid) \
1267 (*current_target.to_remove_exec_catchpoint) (pid)
1271 NEEDED is nonzero if any syscall catch (of any kind) is requested.
1272 If NEEDED is zero, it means the target can disable the mechanism to
1273 catch system calls because there are no more catchpoints of this type.
1275 ANY_COUNT is nonzero if a generic (filter-less) syscall catch is
1276 being requested. In this case, both TABLE_SIZE and TABLE should
1279 TABLE_SIZE is the number of elements in TABLE. It only matters if
1282 TABLE is an array of ints, indexed by syscall number. An element in
1283 this array is nonzero if that syscall should be caught. This argument
1284 only matters if ANY_COUNT is zero.
1286 Return 0 for success, 1 if syscall catchpoints are not supported or -1
1289 #define target_set_syscall_catchpoint(pid, needed, any_count, table_size, table) \
1290 (*current_target.to_set_syscall_catchpoint) (pid, needed, any_count, \
1293 /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the
1294 exit code of PID, if any. */
1296 #define target_has_exited(pid,wait_status,exit_status) \
1297 (*current_target.to_has_exited) (pid,wait_status,exit_status)
1299 /* The debugger has completed a blocking wait() call. There is now
1300 some process event that must be processed. This function should
1301 be defined by those targets that require the debugger to perform
1302 cleanup or internal state changes in response to the process event. */
1304 /* The inferior process has died. Do what is right. */
1306 void target_mourn_inferior (void);
1308 /* Does target have enough data to do a run or attach command? */
1310 #define target_can_run(t) \
1311 ((t)->to_can_run) ()
1313 /* Set list of signals to be handled in the target.
1315 PASS_SIGNALS is an array of size NSIG, indexed by target signal number
1316 (enum gdb_signal). For every signal whose entry in this array is
1317 non-zero, the target is allowed -but not required- to skip reporting
1318 arrival of the signal to the GDB core by returning from target_wait,
1319 and to pass the signal directly to the inferior instead.
1321 However, if the target is hardware single-stepping a thread that is
1322 about to receive a signal, it needs to be reported in any case, even
1323 if mentioned in a previous target_pass_signals call. */
1325 extern void target_pass_signals (int nsig
, unsigned char *pass_signals
);
1327 /* Set list of signals the target may pass to the inferior. This
1328 directly maps to the "handle SIGNAL pass/nopass" setting.
1330 PROGRAM_SIGNALS is an array of size NSIG, indexed by target signal
1331 number (enum gdb_signal). For every signal whose entry in this
1332 array is non-zero, the target is allowed to pass the signal to the
1333 inferior. Signals not present in the array shall be silently
1334 discarded. This does not influence whether to pass signals to the
1335 inferior as a result of a target_resume call. This is useful in
1336 scenarios where the target needs to decide whether to pass or not a
1337 signal to the inferior without GDB core involvement, such as for
1338 example, when detaching (as threads may have been suspended with
1339 pending signals not reported to GDB). */
1341 extern void target_program_signals (int nsig
, unsigned char *program_signals
);
1343 /* Check to see if a thread is still alive. */
1345 extern int target_thread_alive (ptid_t ptid
);
1347 /* Query for new threads and add them to the thread list. */
1349 extern void target_find_new_threads (void);
1351 /* Make target stop in a continuable fashion. (For instance, under
1352 Unix, this should act like SIGSTOP). This function is normally
1353 used by GUIs to implement a stop button. */
1355 extern void target_stop (ptid_t ptid
);
1357 /* Send the specified COMMAND to the target's monitor
1358 (shell,interpreter) for execution. The result of the query is
1359 placed in OUTBUF. */
1361 #define target_rcmd(command, outbuf) \
1362 (*current_target.to_rcmd) (command, outbuf)
1365 /* Does the target include all of memory, or only part of it? This
1366 determines whether we look up the target chain for other parts of
1367 memory if this target can't satisfy a request. */
1369 extern int target_has_all_memory_1 (void);
1370 #define target_has_all_memory target_has_all_memory_1 ()
1372 /* Does the target include memory? (Dummy targets don't.) */
1374 extern int target_has_memory_1 (void);
1375 #define target_has_memory target_has_memory_1 ()
1377 /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until
1378 we start a process.) */
1380 extern int target_has_stack_1 (void);
1381 #define target_has_stack target_has_stack_1 ()
1383 /* Does the target have registers? (Exec files don't.) */
1385 extern int target_has_registers_1 (void);
1386 #define target_has_registers target_has_registers_1 ()
1388 /* Does the target have execution? Can we make it jump (through
1389 hoops), or pop its stack a few times? This means that the current
1390 target is currently executing; for some targets, that's the same as
1391 whether or not the target is capable of execution, but there are
1392 also targets which can be current while not executing. In that
1393 case this will become true after target_create_inferior or
1396 extern int target_has_execution_1 (ptid_t
);
1398 /* Like target_has_execution_1, but always passes inferior_ptid. */
1400 extern int target_has_execution_current (void);
1402 #define target_has_execution target_has_execution_current ()
1404 /* Default implementations for process_stratum targets. Return true
1405 if there's a selected inferior, false otherwise. */
1407 extern int default_child_has_all_memory (struct target_ops
*ops
);
1408 extern int default_child_has_memory (struct target_ops
*ops
);
1409 extern int default_child_has_stack (struct target_ops
*ops
);
1410 extern int default_child_has_registers (struct target_ops
*ops
);
1411 extern int default_child_has_execution (struct target_ops
*ops
,
1414 /* Can the target support the debugger control of thread execution?
1415 Can it lock the thread scheduler? */
1417 #define target_can_lock_scheduler \
1418 (current_target.to_has_thread_control & tc_schedlock)
1420 /* Should the target enable async mode if it is supported? Temporary
1421 cludge until async mode is a strict superset of sync mode. */
1422 extern int target_async_permitted
;
1424 /* Can the target support asynchronous execution? */
1425 #define target_can_async_p() (current_target.to_can_async_p ())
1427 /* Is the target in asynchronous execution mode? */
1428 #define target_is_async_p() (current_target.to_is_async_p ())
1430 int target_supports_non_stop (void);
1432 /* Put the target in async mode with the specified callback function. */
1433 #define target_async(CALLBACK,CONTEXT) \
1434 (current_target.to_async ((CALLBACK), (CONTEXT)))
1436 #define target_execution_direction() \
1437 (current_target.to_execution_direction ())
1439 /* Converts a process id to a string. Usually, the string just contains
1440 `process xyz', but on some systems it may contain
1441 `process xyz thread abc'. */
1443 extern char *target_pid_to_str (ptid_t ptid
);
1445 extern char *normal_pid_to_str (ptid_t ptid
);
1447 /* Return a short string describing extra information about PID,
1448 e.g. "sleeping", "runnable", "running on LWP 3". Null return value
1451 #define target_extra_thread_info(TP) \
1452 (current_target.to_extra_thread_info (TP))
1454 /* Return the thread's name. A NULL result means that the target
1455 could not determine this thread's name. */
1457 extern char *target_thread_name (struct thread_info
*);
1459 /* Attempts to find the pathname of the executable file
1460 that was run to create a specified process.
1462 The process PID must be stopped when this operation is used.
1464 If the executable file cannot be determined, NULL is returned.
1466 Else, a pointer to a character string containing the pathname
1467 is returned. This string should be copied into a buffer by
1468 the client if the string will not be immediately used, or if
1471 #define target_pid_to_exec_file(pid) \
1472 (current_target.to_pid_to_exec_file) (pid)
1474 /* See the to_thread_architecture description in struct target_ops. */
1476 #define target_thread_architecture(ptid) \
1477 (current_target.to_thread_architecture (¤t_target, ptid))
1480 * Iterator function for target memory regions.
1481 * Calls a callback function once for each memory region 'mapped'
1482 * in the child process. Defined as a simple macro rather than
1483 * as a function macro so that it can be tested for nullity.
1486 #define target_find_memory_regions(FUNC, DATA) \
1487 (current_target.to_find_memory_regions) (FUNC, DATA)
1490 * Compose corefile .note section.
1493 #define target_make_corefile_notes(BFD, SIZE_P) \
1494 (current_target.to_make_corefile_notes) (BFD, SIZE_P)
1496 /* Bookmark interfaces. */
1497 #define target_get_bookmark(ARGS, FROM_TTY) \
1498 (current_target.to_get_bookmark) (ARGS, FROM_TTY)
1500 #define target_goto_bookmark(ARG, FROM_TTY) \
1501 (current_target.to_goto_bookmark) (ARG, FROM_TTY)
1503 /* Hardware watchpoint interfaces. */
1505 /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or
1506 write). Only the INFERIOR_PTID task is being queried. */
1508 #define target_stopped_by_watchpoint \
1509 (*current_target.to_stopped_by_watchpoint)
1511 /* Non-zero if we have steppable watchpoints */
1513 #define target_have_steppable_watchpoint \
1514 (current_target.to_have_steppable_watchpoint)
1516 /* Non-zero if we have continuable watchpoints */
1518 #define target_have_continuable_watchpoint \
1519 (current_target.to_have_continuable_watchpoint)
1521 /* Provide defaults for hardware watchpoint functions. */
1523 /* If the *_hw_beakpoint functions have not been defined
1524 elsewhere use the definitions in the target vector. */
1526 /* Returns non-zero if we can set a hardware watchpoint of type TYPE. TYPE is
1527 one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or
1528 bp_hardware_breakpoint. CNT is the number of such watchpoints used so far
1529 (including this one?). OTHERTYPE is who knows what... */
1531 #define target_can_use_hardware_watchpoint(TYPE,CNT,OTHERTYPE) \
1532 (*current_target.to_can_use_hw_breakpoint) (TYPE, CNT, OTHERTYPE);
1534 /* Returns the number of debug registers needed to watch the given
1535 memory region, or zero if not supported. */
1537 #define target_region_ok_for_hw_watchpoint(addr, len) \
1538 (*current_target.to_region_ok_for_hw_watchpoint) (addr, len)
1541 /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes.
1542 TYPE is 0 for write, 1 for read, and 2 for read/write accesses.
1543 COND is the expression for its condition, or NULL if there's none.
1544 Returns 0 for success, 1 if the watchpoint type is not supported,
1547 #define target_insert_watchpoint(addr, len, type, cond) \
1548 (*current_target.to_insert_watchpoint) (addr, len, type, cond)
1550 #define target_remove_watchpoint(addr, len, type, cond) \
1551 (*current_target.to_remove_watchpoint) (addr, len, type, cond)
1553 /* Insert a new masked watchpoint at ADDR using the mask MASK.
1554 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
1555 or hw_access for an access watchpoint. Returns 0 for success, 1 if
1556 masked watchpoints are not supported, -1 for failure. */
1558 extern int target_insert_mask_watchpoint (CORE_ADDR
, CORE_ADDR
, int);
1560 /* Remove a masked watchpoint at ADDR with the mask MASK.
1561 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
1562 or hw_access for an access watchpoint. Returns 0 for success, non-zero
1565 extern int target_remove_mask_watchpoint (CORE_ADDR
, CORE_ADDR
, int);
1567 /* Insert a hardware breakpoint at address BP_TGT->placed_address in
1568 the target machine. Returns 0 for success, and returns non-zero or
1569 throws an error (with a detailed failure reason error code and
1570 message) otherwise. */
1572 #define target_insert_hw_breakpoint(gdbarch, bp_tgt) \
1573 (*current_target.to_insert_hw_breakpoint) (gdbarch, bp_tgt)
1575 #define target_remove_hw_breakpoint(gdbarch, bp_tgt) \
1576 (*current_target.to_remove_hw_breakpoint) (gdbarch, bp_tgt)
1578 /* Return number of debug registers needed for a ranged breakpoint,
1579 or -1 if ranged breakpoints are not supported. */
1581 extern int target_ranged_break_num_registers (void);
1583 /* Return non-zero if target knows the data address which triggered this
1584 target_stopped_by_watchpoint, in such case place it to *ADDR_P. Only the
1585 INFERIOR_PTID task is being queried. */
1586 #define target_stopped_data_address(target, addr_p) \
1587 (*target.to_stopped_data_address) (target, addr_p)
1589 /* Return non-zero if ADDR is within the range of a watchpoint spanning
1590 LENGTH bytes beginning at START. */
1591 #define target_watchpoint_addr_within_range(target, addr, start, length) \
1592 (*target.to_watchpoint_addr_within_range) (target, addr, start, length)
1594 /* Return non-zero if the target is capable of using hardware to evaluate
1595 the condition expression. In this case, if the condition is false when
1596 the watched memory location changes, execution may continue without the
1597 debugger being notified.
1599 Due to limitations in the hardware implementation, it may be capable of
1600 avoiding triggering the watchpoint in some cases where the condition
1601 expression is false, but may report some false positives as well.
1602 For this reason, GDB will still evaluate the condition expression when
1603 the watchpoint triggers. */
1604 #define target_can_accel_watchpoint_condition(addr, len, type, cond) \
1605 (*current_target.to_can_accel_watchpoint_condition) (addr, len, type, cond)
1607 /* Return number of debug registers needed for a masked watchpoint,
1608 -1 if masked watchpoints are not supported or -2 if the given address
1609 and mask combination cannot be used. */
1611 extern int target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
);
1613 /* Target can execute in reverse? */
1614 #define target_can_execute_reverse \
1615 (current_target.to_can_execute_reverse ? \
1616 current_target.to_can_execute_reverse () : 0)
1618 extern const struct target_desc
*target_read_description (struct target_ops
*);
1620 #define target_get_ada_task_ptid(lwp, tid) \
1621 (*current_target.to_get_ada_task_ptid) (lwp,tid)
1623 /* Utility implementation of searching memory. */
1624 extern int simple_search_memory (struct target_ops
* ops
,
1625 CORE_ADDR start_addr
,
1626 ULONGEST search_space_len
,
1627 const gdb_byte
*pattern
,
1628 ULONGEST pattern_len
,
1629 CORE_ADDR
*found_addrp
);
1631 /* Main entry point for searching memory. */
1632 extern int target_search_memory (CORE_ADDR start_addr
,
1633 ULONGEST search_space_len
,
1634 const gdb_byte
*pattern
,
1635 ULONGEST pattern_len
,
1636 CORE_ADDR
*found_addrp
);
1638 /* Target file operations. */
1640 /* Open FILENAME on the target, using FLAGS and MODE. Return a
1641 target file descriptor, or -1 if an error occurs (and set
1643 extern int target_fileio_open (const char *filename
, int flags
, int mode
,
1646 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
1647 Return the number of bytes written, or -1 if an error occurs
1648 (and set *TARGET_ERRNO). */
1649 extern int target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
1650 ULONGEST offset
, int *target_errno
);
1652 /* Read up to LEN bytes FD on the target into READ_BUF.
1653 Return the number of bytes read, or -1 if an error occurs
1654 (and set *TARGET_ERRNO). */
1655 extern int target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
1656 ULONGEST offset
, int *target_errno
);
1658 /* Close FD on the target. Return 0, or -1 if an error occurs
1659 (and set *TARGET_ERRNO). */
1660 extern int target_fileio_close (int fd
, int *target_errno
);
1662 /* Unlink FILENAME on the target. Return 0, or -1 if an error
1663 occurs (and set *TARGET_ERRNO). */
1664 extern int target_fileio_unlink (const char *filename
, int *target_errno
);
1666 /* Read value of symbolic link FILENAME on the target. Return a
1667 null-terminated string allocated via xmalloc, or NULL if an error
1668 occurs (and set *TARGET_ERRNO). */
1669 extern char *target_fileio_readlink (const char *filename
, int *target_errno
);
1671 /* Read target file FILENAME. The return value will be -1 if the transfer
1672 fails or is not supported; 0 if the object is empty; or the length
1673 of the object otherwise. If a positive value is returned, a
1674 sufficiently large buffer will be allocated using xmalloc and
1675 returned in *BUF_P containing the contents of the object.
1677 This method should be used for objects sufficiently small to store
1678 in a single xmalloc'd buffer, when no fixed bound on the object's
1679 size is known in advance. */
1680 extern LONGEST
target_fileio_read_alloc (const char *filename
,
1683 /* Read target file FILENAME. The result is NUL-terminated and
1684 returned as a string, allocated using xmalloc. If an error occurs
1685 or the transfer is unsupported, NULL is returned. Empty objects
1686 are returned as allocated but empty strings. A warning is issued
1687 if the result contains any embedded NUL bytes. */
1688 extern char *target_fileio_read_stralloc (const char *filename
);
1691 /* Tracepoint-related operations. */
1693 #define target_trace_init() \
1694 (*current_target.to_trace_init) ()
1696 #define target_download_tracepoint(t) \
1697 (*current_target.to_download_tracepoint) (t)
1699 #define target_can_download_tracepoint() \
1700 (*current_target.to_can_download_tracepoint) ()
1702 #define target_download_trace_state_variable(tsv) \
1703 (*current_target.to_download_trace_state_variable) (tsv)
1705 #define target_enable_tracepoint(loc) \
1706 (*current_target.to_enable_tracepoint) (loc)
1708 #define target_disable_tracepoint(loc) \
1709 (*current_target.to_disable_tracepoint) (loc)
1711 #define target_trace_start() \
1712 (*current_target.to_trace_start) ()
1714 #define target_trace_set_readonly_regions() \
1715 (*current_target.to_trace_set_readonly_regions) ()
1717 #define target_get_trace_status(ts) \
1718 (*current_target.to_get_trace_status) (ts)
1720 #define target_get_tracepoint_status(tp,utp) \
1721 (*current_target.to_get_tracepoint_status) (tp, utp)
1723 #define target_trace_stop() \
1724 (*current_target.to_trace_stop) ()
1726 #define target_trace_find(type,num,addr1,addr2,tpp) \
1727 (*current_target.to_trace_find) ((type), (num), (addr1), (addr2), (tpp))
1729 #define target_get_trace_state_variable_value(tsv,val) \
1730 (*current_target.to_get_trace_state_variable_value) ((tsv), (val))
1732 #define target_save_trace_data(filename) \
1733 (*current_target.to_save_trace_data) (filename)
1735 #define target_upload_tracepoints(utpp) \
1736 (*current_target.to_upload_tracepoints) (utpp)
1738 #define target_upload_trace_state_variables(utsvp) \
1739 (*current_target.to_upload_trace_state_variables) (utsvp)
1741 #define target_get_raw_trace_data(buf,offset,len) \
1742 (*current_target.to_get_raw_trace_data) ((buf), (offset), (len))
1744 #define target_get_min_fast_tracepoint_insn_len() \
1745 (*current_target.to_get_min_fast_tracepoint_insn_len) ()
1747 #define target_set_disconnected_tracing(val) \
1748 (*current_target.to_set_disconnected_tracing) (val)
1750 #define target_set_circular_trace_buffer(val) \
1751 (*current_target.to_set_circular_trace_buffer) (val)
1753 #define target_set_trace_buffer_size(val) \
1754 (*current_target.to_set_trace_buffer_size) (val)
1756 #define target_set_trace_notes(user,notes,stopnotes) \
1757 (*current_target.to_set_trace_notes) ((user), (notes), (stopnotes))
1759 #define target_get_tib_address(ptid, addr) \
1760 (*current_target.to_get_tib_address) ((ptid), (addr))
1762 #define target_set_permissions() \
1763 (*current_target.to_set_permissions) ()
1765 #define target_static_tracepoint_marker_at(addr, marker) \
1766 (*current_target.to_static_tracepoint_marker_at) (addr, marker)
1768 #define target_static_tracepoint_markers_by_strid(marker_id) \
1769 (*current_target.to_static_tracepoint_markers_by_strid) (marker_id)
1771 #define target_traceframe_info() \
1772 (*current_target.to_traceframe_info) ()
1774 #define target_use_agent(use) \
1775 (*current_target.to_use_agent) (use)
1777 #define target_can_use_agent() \
1778 (*current_target.to_can_use_agent) ()
1780 #define target_augmented_libraries_svr4_read() \
1781 (*current_target.to_augmented_libraries_svr4_read) ()
1783 /* Command logging facility. */
1785 #define target_log_command(p) \
1787 if (current_target.to_log_command) \
1788 (*current_target.to_log_command) (p); \
1792 extern int target_core_of_thread (ptid_t ptid
);
1794 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range matches
1795 the contents of [DATA,DATA+SIZE). Returns 1 if there's a match, 0
1796 if there's a mismatch, and -1 if an error is encountered while
1797 reading memory. Throws an error if the functionality is found not
1798 to be supported by the current target. */
1799 int target_verify_memory (const gdb_byte
*data
,
1800 CORE_ADDR memaddr
, ULONGEST size
);
1802 /* Routines for maintenance of the target structures...
1804 complete_target_initialization: Finalize a target_ops by filling in
1805 any fields needed by the target implementation.
1807 add_target: Add a target to the list of all possible targets.
1809 push_target: Make this target the top of the stack of currently used
1810 targets, within its particular stratum of the stack. Result
1811 is 0 if now atop the stack, nonzero if not on top (maybe
1814 unpush_target: Remove this from the stack of currently used targets,
1815 no matter where it is on the list. Returns 0 if no
1816 change, 1 if removed from stack. */
1818 extern void add_target (struct target_ops
*);
1820 extern void add_target_with_completer (struct target_ops
*t
,
1821 completer_ftype
*completer
);
1823 extern void complete_target_initialization (struct target_ops
*t
);
1825 /* Adds a command ALIAS for target T and marks it deprecated. This is useful
1826 for maintaining backwards compatibility when renaming targets. */
1828 extern void add_deprecated_target_alias (struct target_ops
*t
, char *alias
);
1830 extern void push_target (struct target_ops
*);
1832 extern int unpush_target (struct target_ops
*);
1834 extern void target_pre_inferior (int);
1836 extern void target_preopen (int);
1838 /* Does whatever cleanup is required to get rid of all pushed targets. */
1839 extern void pop_all_targets (void);
1841 /* Like pop_all_targets, but pops only targets whose stratum is
1842 strictly above ABOVE_STRATUM. */
1843 extern void pop_all_targets_above (enum strata above_stratum
);
1845 extern int target_is_pushed (struct target_ops
*t
);
1847 extern CORE_ADDR
target_translate_tls_address (struct objfile
*objfile
,
1850 /* Struct target_section maps address ranges to file sections. It is
1851 mostly used with BFD files, but can be used without (e.g. for handling
1852 raw disks, or files not in formats handled by BFD). */
1854 struct target_section
1856 CORE_ADDR addr
; /* Lowest address in section */
1857 CORE_ADDR endaddr
; /* 1+highest address in section */
1859 struct bfd_section
*the_bfd_section
;
1861 /* The "owner" of the section.
1862 It can be any unique value. It is set by add_target_sections
1863 and used by remove_target_sections.
1864 For example, for executables it is a pointer to exec_bfd and
1865 for shlibs it is the so_list pointer. */
1869 /* Holds an array of target sections. Defined by [SECTIONS..SECTIONS_END[. */
1871 struct target_section_table
1873 struct target_section
*sections
;
1874 struct target_section
*sections_end
;
1877 /* Return the "section" containing the specified address. */
1878 struct target_section
*target_section_by_addr (struct target_ops
*target
,
1881 /* Return the target section table this target (or the targets
1882 beneath) currently manipulate. */
1884 extern struct target_section_table
*target_get_section_table
1885 (struct target_ops
*target
);
1887 /* From mem-break.c */
1889 extern int memory_remove_breakpoint (struct gdbarch
*,
1890 struct bp_target_info
*);
1892 extern int memory_insert_breakpoint (struct gdbarch
*,
1893 struct bp_target_info
*);
1895 extern int default_memory_remove_breakpoint (struct gdbarch
*,
1896 struct bp_target_info
*);
1898 extern int default_memory_insert_breakpoint (struct gdbarch
*,
1899 struct bp_target_info
*);
1904 extern void initialize_targets (void);
1906 extern void noprocess (void) ATTRIBUTE_NORETURN
;
1908 extern void target_require_runnable (void);
1910 extern void find_default_attach (struct target_ops
*, char *, int);
1912 extern void find_default_create_inferior (struct target_ops
*,
1913 char *, char *, char **, int);
1915 extern struct target_ops
*find_target_beneath (struct target_ops
*);
1917 /* Read OS data object of type TYPE from the target, and return it in
1918 XML format. The result is NUL-terminated and returned as a string,
1919 allocated using xmalloc. If an error occurs or the transfer is
1920 unsupported, NULL is returned. Empty objects are returned as
1921 allocated but empty strings. */
1923 extern char *target_get_osdata (const char *type
);
1926 /* Stuff that should be shared among the various remote targets. */
1928 /* Debugging level. 0 is off, and non-zero values mean to print some debug
1929 information (higher values, more information). */
1930 extern int remote_debug
;
1932 /* Speed in bits per second, or -1 which means don't mess with the speed. */
1933 extern int baud_rate
;
1934 /* Timeout limit for response from target. */
1935 extern int remote_timeout
;
1939 /* Set the show memory breakpoints mode to show, and installs a cleanup
1940 to restore it back to the current value. */
1941 extern struct cleanup
*make_show_memory_breakpoints_cleanup (int show
);
1943 extern int may_write_registers
;
1944 extern int may_write_memory
;
1945 extern int may_insert_breakpoints
;
1946 extern int may_insert_tracepoints
;
1947 extern int may_insert_fast_tracepoints
;
1948 extern int may_stop
;
1950 extern void update_target_permissions (void);
1953 /* Imported from machine dependent code. */
1955 /* Blank target vector entries are initialized to target_ignore. */
1956 void target_ignore (void);
1958 /* See to_supports_btrace in struct target_ops. */
1959 extern int target_supports_btrace (void);
1961 /* See to_enable_btrace in struct target_ops. */
1962 extern struct btrace_target_info
*target_enable_btrace (ptid_t ptid
);
1964 /* See to_disable_btrace in struct target_ops. */
1965 extern void target_disable_btrace (struct btrace_target_info
*btinfo
);
1967 /* See to_teardown_btrace in struct target_ops. */
1968 extern void target_teardown_btrace (struct btrace_target_info
*btinfo
);
1970 /* See to_read_btrace in struct target_ops. */
1971 extern VEC (btrace_block_s
) *target_read_btrace (struct btrace_target_info
*,
1972 enum btrace_read_type
);
1974 /* See to_stop_recording in struct target_ops. */
1975 extern void target_stop_recording (void);
1977 /* See to_info_record in struct target_ops. */
1978 extern void target_info_record (void);
1980 /* See to_save_record in struct target_ops. */
1981 extern void target_save_record (const char *filename
);
1983 /* Query if the target supports deleting the execution log. */
1984 extern int target_supports_delete_record (void);
1986 /* See to_delete_record in struct target_ops. */
1987 extern void target_delete_record (void);
1989 /* See to_record_is_replaying in struct target_ops. */
1990 extern int target_record_is_replaying (void);
1992 /* See to_goto_record_begin in struct target_ops. */
1993 extern void target_goto_record_begin (void);
1995 /* See to_goto_record_end in struct target_ops. */
1996 extern void target_goto_record_end (void);
1998 /* See to_goto_record in struct target_ops. */
1999 extern void target_goto_record (ULONGEST insn
);
2001 /* See to_insn_history. */
2002 extern void target_insn_history (int size
, int flags
);
2004 /* See to_insn_history_from. */
2005 extern void target_insn_history_from (ULONGEST from
, int size
, int flags
);
2007 /* See to_insn_history_range. */
2008 extern void target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
);
2010 /* See to_call_history. */
2011 extern void target_call_history (int size
, int flags
);
2013 /* See to_call_history_from. */
2014 extern void target_call_history_from (ULONGEST begin
, int size
, int flags
);
2016 /* See to_call_history_range. */
2017 extern void target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
);
2019 #endif /* !defined (TARGET_H) */