1 /* Interface between GDB and target environments, including files and processes
3 Copyright (C) 1990-2017 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;
43 #include "infrun.h" /* For enum exec_direction_kind. */
44 #include "breakpoint.h" /* For enum bptype. */
45 #include "common/scoped_restore.h"
47 /* This include file defines the interface between the main part
48 of the debugger, and the part which is target-specific, or
49 specific to the communications interface between us and the
52 A TARGET is an interface between the debugger and a particular
53 kind of file or process. Targets can be STACKED in STRATA,
54 so that more than one target can potentially respond to a request.
55 In particular, memory accesses will walk down the stack of targets
56 until they find a target that is interested in handling that particular
57 address. STRATA are artificial boundaries on the stack, within
58 which particular kinds of targets live. Strata exist so that
59 people don't get confused by pushing e.g. a process target and then
60 a file target, and wondering why they can't see the current values
61 of variables any more (the file target is handling them and they
62 never get to the process target). So when you push a file target,
63 it goes into the file stratum, which is always below the process
66 #include "target/target.h"
67 #include "target/resume.h"
68 #include "target/wait.h"
69 #include "target/waitstatus.h"
74 #include "gdb_signals.h"
80 #include "break-common.h" /* For enum target_hw_bp_type. */
84 dummy_stratum, /* The lowest of the low */
85 file_stratum, /* Executable files, etc */
86 process_stratum, /* Executing processes or core dump files */
87 thread_stratum, /* Executing threads */
88 record_stratum, /* Support record debugging */
89 arch_stratum /* Architecture overrides */
92 enum thread_control_capabilities
94 tc_none = 0, /* Default: can't control thread execution. */
95 tc_schedlock = 1, /* Can lock the thread scheduler. */
98 /* The structure below stores information about a system call.
99 It is basically used in the "catch syscall" command, and in
100 every function that gives information about a system call.
102 It's also good to mention that its fields represent everything
103 that we currently know about a syscall in GDB. */
106 /* The syscall number. */
109 /* The syscall name. */
113 /* Return a pretty printed form of TARGET_OPTIONS.
114 Space for the result is malloc'd, caller must free. */
115 extern char *target_options_to_string (int target_options);
117 /* Possible types of events that the inferior handler will have to
119 enum inferior_event_type
121 /* Process a normal inferior event which will result in target_wait
124 /* We are called to do stuff after the inferior stops. */
128 /* Target objects which can be transfered using target_read,
129 target_write, et cetera. */
133 /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */
135 /* SPU target specific transfer. See "spu-tdep.c". */
137 /* Transfer up-to LEN bytes of memory starting at OFFSET. */
138 TARGET_OBJECT_MEMORY,
139 /* Memory, avoiding GDB's data cache and trusting the executable.
140 Target implementations of to_xfer_partial never need to handle
141 this object, and most callers should not use it. */
142 TARGET_OBJECT_RAW_MEMORY,
143 /* Memory known to be part of the target's stack. This is cached even
144 if it is not in a region marked as such, since it is known to be
146 TARGET_OBJECT_STACK_MEMORY,
147 /* Memory known to be part of the target code. This is cached even
148 if it is not in a region marked as such. */
149 TARGET_OBJECT_CODE_MEMORY,
150 /* Kernel Unwind Table. See "ia64-tdep.c". */
151 TARGET_OBJECT_UNWIND_TABLE,
152 /* Transfer auxilliary vector. */
154 /* StackGhost cookie. See "sparc-tdep.c". */
155 TARGET_OBJECT_WCOOKIE,
156 /* Target memory map in XML format. */
157 TARGET_OBJECT_MEMORY_MAP,
158 /* Flash memory. This object can be used to write contents to
159 a previously erased flash memory. Using it without erasing
160 flash can have unexpected results. Addresses are physical
161 address on target, and not relative to flash start. */
163 /* Available target-specific features, e.g. registers and coprocessors.
164 See "target-descriptions.c". ANNEX should never be empty. */
165 TARGET_OBJECT_AVAILABLE_FEATURES,
166 /* Currently loaded libraries, in XML format. */
167 TARGET_OBJECT_LIBRARIES,
168 /* Currently loaded libraries specific for SVR4 systems, in XML format. */
169 TARGET_OBJECT_LIBRARIES_SVR4,
170 /* Currently loaded libraries specific to AIX systems, in XML format. */
171 TARGET_OBJECT_LIBRARIES_AIX,
172 /* Get OS specific data. The ANNEX specifies the type (running
173 processes, etc.). The data being transfered is expected to follow
174 the DTD specified in features/osdata.dtd. */
175 TARGET_OBJECT_OSDATA,
176 /* Extra signal info. Usually the contents of `siginfo_t' on unix
178 TARGET_OBJECT_SIGNAL_INFO,
179 /* The list of threads that are being debugged. */
180 TARGET_OBJECT_THREADS,
181 /* Collected static trace data. */
182 TARGET_OBJECT_STATIC_TRACE_DATA,
183 /* The HP-UX registers (those that can be obtained or modified by using
184 the TT_LWP_RUREGS/TT_LWP_WUREGS ttrace requests). */
185 TARGET_OBJECT_HPUX_UREGS,
186 /* The HP-UX shared library linkage pointer. ANNEX should be a string
187 image of the code address whose linkage pointer we are looking for.
189 The size of the data transfered is always 8 bytes (the size of an
191 TARGET_OBJECT_HPUX_SOLIB_GOT,
192 /* Traceframe info, in XML format. */
193 TARGET_OBJECT_TRACEFRAME_INFO,
194 /* Load maps for FDPIC systems. */
196 /* Darwin dynamic linker info data. */
197 TARGET_OBJECT_DARWIN_DYLD_INFO,
198 /* OpenVMS Unwind Information Block. */
199 TARGET_OBJECT_OPENVMS_UIB,
200 /* Branch trace data, in XML format. */
201 TARGET_OBJECT_BTRACE,
202 /* Branch trace configuration, in XML format. */
203 TARGET_OBJECT_BTRACE_CONF,
204 /* The pathname of the executable file that was run to create
205 a specified process. ANNEX should be a string representation
206 of the process ID of the process in question, in hexadecimal
208 TARGET_OBJECT_EXEC_FILE,
209 /* Possible future objects: TARGET_OBJECT_FILE, ... */
212 /* Possible values returned by target_xfer_partial, etc. */
214 enum target_xfer_status
216 /* Some bytes are transferred. */
219 /* No further transfer is possible. */
222 /* The piece of the object requested is unavailable. */
223 TARGET_XFER_UNAVAILABLE = 2,
225 /* Generic I/O error. Note that it's important that this is '-1',
226 as we still have target_xfer-related code returning hardcoded
228 TARGET_XFER_E_IO = -1,
230 /* Keep list in sync with target_xfer_status_to_string. */
233 /* Return the string form of STATUS. */
236 target_xfer_status_to_string (enum target_xfer_status status);
238 /* Enumeration of the kinds of traceframe searches that a target may
239 be able to perform. */
250 typedef struct static_tracepoint_marker *static_tracepoint_marker_p;
251 DEF_VEC_P(static_tracepoint_marker_p);
253 typedef enum target_xfer_status
254 target_xfer_partial_ftype (struct target_ops *ops,
255 enum target_object object,
258 const gdb_byte *writebuf,
261 ULONGEST *xfered_len);
263 enum target_xfer_status
264 raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf,
265 const gdb_byte *writebuf, ULONGEST memaddr,
266 LONGEST len, ULONGEST *xfered_len);
268 /* Request that OPS transfer up to LEN addressable units of the target's
269 OBJECT. When reading from a memory object, the size of an addressable unit
270 is architecture dependent and can be found using
271 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is 1
272 byte long. BUF should point to a buffer large enough to hold the read data,
273 taking into account the addressable unit size. The OFFSET, for a seekable
274 object, specifies the starting point. The ANNEX can be used to provide
275 additional data-specific information to the target.
277 Return the number of addressable units actually transferred, or a negative
278 error code (an 'enum target_xfer_error' value) if the transfer is not
279 supported or otherwise fails. Return of a positive value less than
280 LEN indicates that no further transfer is possible. Unlike the raw
281 to_xfer_partial interface, callers of these functions do not need
282 to retry partial transfers. */
284 extern LONGEST target_read (struct target_ops *ops,
285 enum target_object object,
286 const char *annex, gdb_byte *buf,
287 ULONGEST offset, LONGEST len);
289 struct memory_read_result
291 /* First address that was read. */
293 /* Past-the-end address. */
298 typedef struct memory_read_result memory_read_result_s;
299 DEF_VEC_O(memory_read_result_s);
301 extern void free_memory_read_result_vector (void *);
303 extern VEC(memory_read_result_s)* read_memory_robust (struct target_ops *ops,
304 const ULONGEST offset,
307 /* Request that OPS transfer up to LEN addressable units from BUF to the
308 target's OBJECT. When writing to a memory object, the addressable unit
309 size is architecture dependent and can be found using
310 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is 1
311 byte long. The OFFSET, for a seekable object, specifies the starting point.
312 The ANNEX can be used to provide additional data-specific information to
315 Return the number of addressable units actually transferred, or a negative
316 error code (an 'enum target_xfer_status' value) if the transfer is not
317 supported or otherwise fails. Return of a positive value less than
318 LEN indicates that no further transfer is possible. Unlike the raw
319 to_xfer_partial interface, callers of these functions do not need to
320 retry partial transfers. */
322 extern LONGEST target_write (struct target_ops *ops,
323 enum target_object object,
324 const char *annex, const gdb_byte *buf,
325 ULONGEST offset, LONGEST len);
327 /* Similar to target_write, except that it also calls PROGRESS with
328 the number of bytes written and the opaque BATON after every
329 successful partial write (and before the first write). This is
330 useful for progress reporting and user interaction while writing
331 data. To abort the transfer, the progress callback can throw an
334 LONGEST target_write_with_progress (struct target_ops *ops,
335 enum target_object object,
336 const char *annex, const gdb_byte *buf,
337 ULONGEST offset, LONGEST len,
338 void (*progress) (ULONGEST, void *),
341 /* Wrapper to perform a full read of unknown size. OBJECT/ANNEX will
342 be read using OPS. The return value will be -1 if the transfer
343 fails or is not supported; 0 if the object is empty; or the length
344 of the object otherwise. If a positive value is returned, a
345 sufficiently large buffer will be allocated using xmalloc and
346 returned in *BUF_P containing the contents of the object.
348 This method should be used for objects sufficiently small to store
349 in a single xmalloc'd buffer, when no fixed bound on the object's
350 size is known in advance. Don't try to read TARGET_OBJECT_MEMORY
351 through this function. */
353 extern LONGEST target_read_alloc (struct target_ops *ops,
354 enum target_object object,
355 const char *annex, gdb_byte **buf_p);
357 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
358 returned as a string, allocated using xmalloc. If an error occurs
359 or the transfer is unsupported, NULL is returned. Empty objects
360 are returned as allocated but empty strings. A warning is issued
361 if the result contains any embedded NUL bytes. */
363 extern char *target_read_stralloc (struct target_ops *ops,
364 enum target_object object,
367 /* See target_ops->to_xfer_partial. */
368 extern target_xfer_partial_ftype target_xfer_partial;
370 /* Wrappers to target read/write that perform memory transfers. They
371 throw an error if the memory transfer fails.
373 NOTE: cagney/2003-10-23: The naming schema is lifted from
374 "frame.h". The parameter order is lifted from get_frame_memory,
375 which in turn lifted it from read_memory. */
377 extern void get_target_memory (struct target_ops *ops, CORE_ADDR addr,
378 gdb_byte *buf, LONGEST len);
379 extern ULONGEST get_target_memory_unsigned (struct target_ops *ops,
380 CORE_ADDR addr, int len,
381 enum bfd_endian byte_order);
383 struct thread_info; /* fwd decl for parameter list below: */
385 /* The type of the callback to the to_async method. */
387 typedef void async_callback_ftype (enum inferior_event_type event_type,
390 /* Normally target debug printing is purely type-based. However,
391 sometimes it is necessary to override the debug printing on a
392 per-argument basis. This macro can be used, attribute-style, to
393 name the target debug printing function for a particular method
394 argument. FUNC is the name of the function. The macro's
395 definition is empty because it is only used by the
396 make-target-delegates script. */
398 #define TARGET_DEBUG_PRINTER(FUNC)
400 /* These defines are used to mark target_ops methods. The script
401 make-target-delegates scans these and auto-generates the base
402 method implementations. There are four macros that can be used:
404 1. TARGET_DEFAULT_IGNORE. There is no argument. The base method
405 does nothing. This is only valid if the method return type is
408 2. TARGET_DEFAULT_NORETURN. The argument is a function call, like
409 'tcomplain ()'. The base method simply makes this call, which is
410 assumed not to return.
412 3. TARGET_DEFAULT_RETURN. The argument is a C expression. The
413 base method returns this expression's value.
415 4. TARGET_DEFAULT_FUNC. The argument is the name of a function.
416 make-target-delegates does not generate a base method in this case,
417 but instead uses the argument function as the base method. */
419 #define TARGET_DEFAULT_IGNORE()
420 #define TARGET_DEFAULT_NORETURN(ARG)
421 #define TARGET_DEFAULT_RETURN(ARG)
422 #define TARGET_DEFAULT_FUNC(ARG)
426 struct target_ops *beneath; /* To the target under this one. */
427 const char *to_shortname; /* Name this target type */
428 const char *to_longname; /* Name for printing */
429 const char *to_doc; /* Documentation. Does not include trailing
430 newline, and starts with a one-line descrip-
431 tion (probably similar to to_longname). */
432 /* Per-target scratch pad. */
434 /* The open routine takes the rest of the parameters from the
435 command, and (if successful) pushes a new target onto the
436 stack. Targets should supply this routine, if only to provide
438 void (*to_open) (const char *, int);
439 /* Old targets with a static target vector provide "to_close".
440 New re-entrant targets provide "to_xclose" and that is expected
441 to xfree everything (including the "struct target_ops"). */
442 void (*to_xclose) (struct target_ops *targ);
443 void (*to_close) (struct target_ops *);
444 /* Attaches to a process on the target side. Arguments are as
445 passed to the `attach' command by the user. This routine can
446 be called when the target is not on the target-stack, if the
447 target_can_run routine returns 1; in that case, it must push
448 itself onto the stack. Upon exit, the target should be ready
449 for normal operations, and should be ready to deliver the
450 status of the process immediately (without waiting) to an
451 upcoming target_wait call. */
452 void (*to_attach) (struct target_ops *ops, const char *, int);
453 void (*to_post_attach) (struct target_ops *, int)
454 TARGET_DEFAULT_IGNORE ();
455 void (*to_detach) (struct target_ops *ops, const char *, int)
456 TARGET_DEFAULT_IGNORE ();
457 void (*to_disconnect) (struct target_ops *, const char *, int)
458 TARGET_DEFAULT_NORETURN (tcomplain ());
459 void (*to_resume) (struct target_ops *, ptid_t,
460 int TARGET_DEBUG_PRINTER (target_debug_print_step),
462 TARGET_DEFAULT_NORETURN (noprocess ());
463 void (*to_commit_resume) (struct target_ops *)
464 TARGET_DEFAULT_IGNORE ();
465 ptid_t (*to_wait) (struct target_ops *,
466 ptid_t, struct target_waitstatus *,
467 int TARGET_DEBUG_PRINTER (target_debug_print_options))
468 TARGET_DEFAULT_FUNC (default_target_wait);
469 void (*to_fetch_registers) (struct target_ops *, struct regcache *, int)
470 TARGET_DEFAULT_IGNORE ();
471 void (*to_store_registers) (struct target_ops *, struct regcache *, int)
472 TARGET_DEFAULT_NORETURN (noprocess ());
473 void (*to_prepare_to_store) (struct target_ops *, struct regcache *)
474 TARGET_DEFAULT_NORETURN (noprocess ());
476 void (*to_files_info) (struct target_ops *)
477 TARGET_DEFAULT_IGNORE ();
478 int (*to_insert_breakpoint) (struct target_ops *, struct gdbarch *,
479 struct bp_target_info *)
480 TARGET_DEFAULT_FUNC (memory_insert_breakpoint);
481 int (*to_remove_breakpoint) (struct target_ops *, struct gdbarch *,
482 struct bp_target_info *,
483 enum remove_bp_reason)
484 TARGET_DEFAULT_FUNC (memory_remove_breakpoint);
486 /* Returns true if the target stopped because it executed a
487 software breakpoint. This is necessary for correct background
488 execution / non-stop mode operation, and for correct PC
489 adjustment on targets where the PC needs to be adjusted when a
490 software breakpoint triggers. In these modes, by the time GDB
491 processes a breakpoint event, the breakpoint may already be
492 done from the target, so GDB needs to be able to tell whether
493 it should ignore the event and whether it should adjust the PC.
494 See adjust_pc_after_break. */
495 int (*to_stopped_by_sw_breakpoint) (struct target_ops *)
496 TARGET_DEFAULT_RETURN (0);
497 /* Returns true if the above method is supported. */
498 int (*to_supports_stopped_by_sw_breakpoint) (struct target_ops *)
499 TARGET_DEFAULT_RETURN (0);
501 /* Returns true if the target stopped for a hardware breakpoint.
502 Likewise, if the target supports hardware breakpoints, this
503 method is necessary for correct background execution / non-stop
504 mode operation. Even though hardware breakpoints do not
505 require PC adjustment, GDB needs to be able to tell whether the
506 hardware breakpoint event is a delayed event for a breakpoint
507 that is already gone and should thus be ignored. */
508 int (*to_stopped_by_hw_breakpoint) (struct target_ops *)
509 TARGET_DEFAULT_RETURN (0);
510 /* Returns true if the above method is supported. */
511 int (*to_supports_stopped_by_hw_breakpoint) (struct target_ops *)
512 TARGET_DEFAULT_RETURN (0);
514 int (*to_can_use_hw_breakpoint) (struct target_ops *,
515 enum bptype, int, int)
516 TARGET_DEFAULT_RETURN (0);
517 int (*to_ranged_break_num_registers) (struct target_ops *)
518 TARGET_DEFAULT_RETURN (-1);
519 int (*to_insert_hw_breakpoint) (struct target_ops *,
520 struct gdbarch *, struct bp_target_info *)
521 TARGET_DEFAULT_RETURN (-1);
522 int (*to_remove_hw_breakpoint) (struct target_ops *,
523 struct gdbarch *, struct bp_target_info *)
524 TARGET_DEFAULT_RETURN (-1);
526 /* Documentation of what the two routines below are expected to do is
527 provided with the corresponding target_* macros. */
528 int (*to_remove_watchpoint) (struct target_ops *, CORE_ADDR, int,
529 enum target_hw_bp_type, struct expression *)
530 TARGET_DEFAULT_RETURN (-1);
531 int (*to_insert_watchpoint) (struct target_ops *, CORE_ADDR, int,
532 enum target_hw_bp_type, struct expression *)
533 TARGET_DEFAULT_RETURN (-1);
535 int (*to_insert_mask_watchpoint) (struct target_ops *,
536 CORE_ADDR, CORE_ADDR,
537 enum target_hw_bp_type)
538 TARGET_DEFAULT_RETURN (1);
539 int (*to_remove_mask_watchpoint) (struct target_ops *,
540 CORE_ADDR, CORE_ADDR,
541 enum target_hw_bp_type)
542 TARGET_DEFAULT_RETURN (1);
543 int (*to_stopped_by_watchpoint) (struct target_ops *)
544 TARGET_DEFAULT_RETURN (0);
545 int to_have_steppable_watchpoint;
546 int to_have_continuable_watchpoint;
547 int (*to_stopped_data_address) (struct target_ops *, CORE_ADDR *)
548 TARGET_DEFAULT_RETURN (0);
549 int (*to_watchpoint_addr_within_range) (struct target_ops *,
550 CORE_ADDR, CORE_ADDR, int)
551 TARGET_DEFAULT_FUNC (default_watchpoint_addr_within_range);
553 /* Documentation of this routine is provided with the corresponding
555 int (*to_region_ok_for_hw_watchpoint) (struct target_ops *,
557 TARGET_DEFAULT_FUNC (default_region_ok_for_hw_watchpoint);
559 int (*to_can_accel_watchpoint_condition) (struct target_ops *,
562 TARGET_DEFAULT_RETURN (0);
563 int (*to_masked_watch_num_registers) (struct target_ops *,
564 CORE_ADDR, CORE_ADDR)
565 TARGET_DEFAULT_RETURN (-1);
567 /* Return 1 for sure target can do single step. Return -1 for
568 unknown. Return 0 for target can't do. */
569 int (*to_can_do_single_step) (struct target_ops *)
570 TARGET_DEFAULT_RETURN (-1);
572 void (*to_terminal_init) (struct target_ops *)
573 TARGET_DEFAULT_IGNORE ();
574 void (*to_terminal_inferior) (struct target_ops *)
575 TARGET_DEFAULT_IGNORE ();
576 void (*to_terminal_ours_for_output) (struct target_ops *)
577 TARGET_DEFAULT_IGNORE ();
578 void (*to_terminal_ours) (struct target_ops *)
579 TARGET_DEFAULT_IGNORE ();
580 void (*to_terminal_info) (struct target_ops *, const char *, int)
581 TARGET_DEFAULT_FUNC (default_terminal_info);
582 void (*to_kill) (struct target_ops *)
583 TARGET_DEFAULT_NORETURN (noprocess ());
584 void (*to_load) (struct target_ops *, const char *, int)
585 TARGET_DEFAULT_NORETURN (tcomplain ());
586 /* Start an inferior process and set inferior_ptid to its pid.
587 EXEC_FILE is the file to run.
588 ALLARGS is a string containing the arguments to the program.
589 ENV is the environment vector to pass. Errors reported with error().
590 On VxWorks and various standalone systems, we ignore exec_file. */
591 void (*to_create_inferior) (struct target_ops *,
592 const char *, const std::string &,
594 void (*to_post_startup_inferior) (struct target_ops *, ptid_t)
595 TARGET_DEFAULT_IGNORE ();
596 int (*to_insert_fork_catchpoint) (struct target_ops *, int)
597 TARGET_DEFAULT_RETURN (1);
598 int (*to_remove_fork_catchpoint) (struct target_ops *, int)
599 TARGET_DEFAULT_RETURN (1);
600 int (*to_insert_vfork_catchpoint) (struct target_ops *, int)
601 TARGET_DEFAULT_RETURN (1);
602 int (*to_remove_vfork_catchpoint) (struct target_ops *, int)
603 TARGET_DEFAULT_RETURN (1);
604 int (*to_follow_fork) (struct target_ops *, int, int)
605 TARGET_DEFAULT_FUNC (default_follow_fork);
606 int (*to_insert_exec_catchpoint) (struct target_ops *, int)
607 TARGET_DEFAULT_RETURN (1);
608 int (*to_remove_exec_catchpoint) (struct target_ops *, int)
609 TARGET_DEFAULT_RETURN (1);
610 void (*to_follow_exec) (struct target_ops *, struct inferior *, char *)
611 TARGET_DEFAULT_IGNORE ();
612 int (*to_set_syscall_catchpoint) (struct target_ops *,
613 int, int, int, int, int *)
614 TARGET_DEFAULT_RETURN (1);
615 int (*to_has_exited) (struct target_ops *, int, int, int *)
616 TARGET_DEFAULT_RETURN (0);
617 void (*to_mourn_inferior) (struct target_ops *)
618 TARGET_DEFAULT_FUNC (default_mourn_inferior);
619 /* Note that to_can_run is special and can be invoked on an
620 unpushed target. Targets defining this method must also define
621 to_can_async_p and to_supports_non_stop. */
622 int (*to_can_run) (struct target_ops *)
623 TARGET_DEFAULT_RETURN (0);
625 /* Documentation of this routine is provided with the corresponding
627 void (*to_pass_signals) (struct target_ops *, int,
628 unsigned char * TARGET_DEBUG_PRINTER (target_debug_print_signals))
629 TARGET_DEFAULT_IGNORE ();
631 /* Documentation of this routine is provided with the
632 corresponding target_* function. */
633 void (*to_program_signals) (struct target_ops *, int,
634 unsigned char * TARGET_DEBUG_PRINTER (target_debug_print_signals))
635 TARGET_DEFAULT_IGNORE ();
637 int (*to_thread_alive) (struct target_ops *, ptid_t ptid)
638 TARGET_DEFAULT_RETURN (0);
639 void (*to_update_thread_list) (struct target_ops *)
640 TARGET_DEFAULT_IGNORE ();
641 const char *(*to_pid_to_str) (struct target_ops *, ptid_t)
642 TARGET_DEFAULT_FUNC (default_pid_to_str);
643 const char *(*to_extra_thread_info) (struct target_ops *, struct thread_info *)
644 TARGET_DEFAULT_RETURN (NULL);
645 const char *(*to_thread_name) (struct target_ops *, struct thread_info *)
646 TARGET_DEFAULT_RETURN (NULL);
647 struct thread_info *(*to_thread_handle_to_thread_info) (struct target_ops *,
650 struct inferior *inf)
651 TARGET_DEFAULT_RETURN (NULL);
652 void (*to_stop) (struct target_ops *, ptid_t)
653 TARGET_DEFAULT_IGNORE ();
654 void (*to_interrupt) (struct target_ops *, ptid_t)
655 TARGET_DEFAULT_IGNORE ();
656 void (*to_pass_ctrlc) (struct target_ops *)
657 TARGET_DEFAULT_FUNC (default_target_pass_ctrlc);
658 void (*to_rcmd) (struct target_ops *,
659 const char *command, struct ui_file *output)
660 TARGET_DEFAULT_FUNC (default_rcmd);
661 char *(*to_pid_to_exec_file) (struct target_ops *, int pid)
662 TARGET_DEFAULT_RETURN (NULL);
663 void (*to_log_command) (struct target_ops *, const char *)
664 TARGET_DEFAULT_IGNORE ();
665 struct target_section_table *(*to_get_section_table) (struct target_ops *)
666 TARGET_DEFAULT_RETURN (NULL);
667 enum strata to_stratum;
668 int (*to_has_all_memory) (struct target_ops *);
669 int (*to_has_memory) (struct target_ops *);
670 int (*to_has_stack) (struct target_ops *);
671 int (*to_has_registers) (struct target_ops *);
672 int (*to_has_execution) (struct target_ops *, ptid_t);
673 int to_has_thread_control; /* control thread execution */
674 int to_attach_no_wait;
675 /* This method must be implemented in some situations. See the
676 comment on 'to_can_run'. */
677 int (*to_can_async_p) (struct target_ops *)
678 TARGET_DEFAULT_RETURN (0);
679 int (*to_is_async_p) (struct target_ops *)
680 TARGET_DEFAULT_RETURN (0);
681 void (*to_async) (struct target_ops *, int)
682 TARGET_DEFAULT_NORETURN (tcomplain ());
683 void (*to_thread_events) (struct target_ops *, int)
684 TARGET_DEFAULT_IGNORE ();
685 /* This method must be implemented in some situations. See the
686 comment on 'to_can_run'. */
687 int (*to_supports_non_stop) (struct target_ops *)
688 TARGET_DEFAULT_RETURN (0);
689 /* Return true if the target operates in non-stop mode even with
690 "set non-stop off". */
691 int (*to_always_non_stop_p) (struct target_ops *)
692 TARGET_DEFAULT_RETURN (0);
693 /* find_memory_regions support method for gcore */
694 int (*to_find_memory_regions) (struct target_ops *,
695 find_memory_region_ftype func, void *data)
696 TARGET_DEFAULT_FUNC (dummy_find_memory_regions);
697 /* make_corefile_notes support method for gcore */
698 char * (*to_make_corefile_notes) (struct target_ops *, bfd *, int *)
699 TARGET_DEFAULT_FUNC (dummy_make_corefile_notes);
700 /* get_bookmark support method for bookmarks */
701 gdb_byte * (*to_get_bookmark) (struct target_ops *, const char *, int)
702 TARGET_DEFAULT_NORETURN (tcomplain ());
703 /* goto_bookmark support method for bookmarks */
704 void (*to_goto_bookmark) (struct target_ops *, const gdb_byte *, int)
705 TARGET_DEFAULT_NORETURN (tcomplain ());
706 /* Return the thread-local address at OFFSET in the
707 thread-local storage for the thread PTID and the shared library
708 or executable file given by OBJFILE. If that block of
709 thread-local storage hasn't been allocated yet, this function
710 may return an error. LOAD_MODULE_ADDR may be zero for statically
711 linked multithreaded inferiors. */
712 CORE_ADDR (*to_get_thread_local_address) (struct target_ops *ops,
714 CORE_ADDR load_module_addr,
716 TARGET_DEFAULT_NORETURN (generic_tls_error ());
718 /* Request that OPS transfer up to LEN addressable units of the target's
719 OBJECT. When reading from a memory object, the size of an addressable
720 unit is architecture dependent and can be found using
721 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is
722 1 byte long. The OFFSET, for a seekable object, specifies the
723 starting point. The ANNEX can be used to provide additional
724 data-specific information to the target.
726 Return the transferred status, error or OK (an
727 'enum target_xfer_status' value). Save the number of addressable units
728 actually transferred in *XFERED_LEN if transfer is successful
729 (TARGET_XFER_OK) or the number unavailable units if the requested
730 data is unavailable (TARGET_XFER_UNAVAILABLE). *XFERED_LEN
731 smaller than LEN does not indicate the end of the object, only
732 the end of the transfer; higher level code should continue
733 transferring if desired. This is handled in target.c.
735 The interface does not support a "retry" mechanism. Instead it
736 assumes that at least one addressable unit will be transfered on each
739 NOTE: cagney/2003-10-17: The current interface can lead to
740 fragmented transfers. Lower target levels should not implement
741 hacks, such as enlarging the transfer, in an attempt to
742 compensate for this. Instead, the target stack should be
743 extended so that it implements supply/collect methods and a
744 look-aside object cache. With that available, the lowest
745 target can safely and freely "push" data up the stack.
747 See target_read and target_write for more information. One,
748 and only one, of readbuf or writebuf must be non-NULL. */
750 enum target_xfer_status (*to_xfer_partial) (struct target_ops *ops,
751 enum target_object object,
754 const gdb_byte *writebuf,
755 ULONGEST offset, ULONGEST len,
756 ULONGEST *xfered_len)
757 TARGET_DEFAULT_RETURN (TARGET_XFER_E_IO);
759 /* Return the limit on the size of any single memory transfer
762 ULONGEST (*to_get_memory_xfer_limit) (struct target_ops *)
763 TARGET_DEFAULT_RETURN (ULONGEST_MAX);
765 /* Returns the memory map for the target. A return value of NULL
766 means that no memory map is available. If a memory address
767 does not fall within any returned regions, it's assumed to be
768 RAM. The returned memory regions should not overlap.
770 The order of regions does not matter; target_memory_map will
771 sort regions by starting address. For that reason, this
772 function should not be called directly except via
775 This method should not cache data; if the memory map could
776 change unexpectedly, it should be invalidated, and higher
777 layers will re-fetch it. */
778 VEC(mem_region_s) *(*to_memory_map) (struct target_ops *)
779 TARGET_DEFAULT_RETURN (NULL);
781 /* Erases the region of flash memory starting at ADDRESS, of
784 Precondition: both ADDRESS and ADDRESS+LENGTH should be aligned
785 on flash block boundaries, as reported by 'to_memory_map'. */
786 void (*to_flash_erase) (struct target_ops *,
787 ULONGEST address, LONGEST length)
788 TARGET_DEFAULT_NORETURN (tcomplain ());
790 /* Finishes a flash memory write sequence. After this operation
791 all flash memory should be available for writing and the result
792 of reading from areas written by 'to_flash_write' should be
793 equal to what was written. */
794 void (*to_flash_done) (struct target_ops *)
795 TARGET_DEFAULT_NORETURN (tcomplain ());
797 /* Describe the architecture-specific features of this target. If
798 OPS doesn't have a description, this should delegate to the
799 "beneath" target. Returns the description found, or NULL if no
800 description was available. */
801 const struct target_desc *(*to_read_description) (struct target_ops *ops)
802 TARGET_DEFAULT_RETURN (NULL);
804 /* Build the PTID of the thread on which a given task is running,
805 based on LWP and THREAD. These values are extracted from the
806 task Private_Data section of the Ada Task Control Block, and
807 their interpretation depends on the target. */
808 ptid_t (*to_get_ada_task_ptid) (struct target_ops *,
809 long lwp, long thread)
810 TARGET_DEFAULT_FUNC (default_get_ada_task_ptid);
812 /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
813 Return 0 if *READPTR is already at the end of the buffer.
814 Return -1 if there is insufficient buffer for a whole entry.
815 Return 1 if an entry was read into *TYPEP and *VALP. */
816 int (*to_auxv_parse) (struct target_ops *ops, gdb_byte **readptr,
817 gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp)
818 TARGET_DEFAULT_FUNC (default_auxv_parse);
820 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
821 sequence of bytes in PATTERN with length PATTERN_LEN.
823 The result is 1 if found, 0 if not found, and -1 if there was an error
824 requiring halting of the search (e.g. memory read error).
825 If the pattern is found the address is recorded in FOUND_ADDRP. */
826 int (*to_search_memory) (struct target_ops *ops,
827 CORE_ADDR start_addr, ULONGEST search_space_len,
828 const gdb_byte *pattern, ULONGEST pattern_len,
829 CORE_ADDR *found_addrp)
830 TARGET_DEFAULT_FUNC (default_search_memory);
832 /* Can target execute in reverse? */
833 int (*to_can_execute_reverse) (struct target_ops *)
834 TARGET_DEFAULT_RETURN (0);
836 /* The direction the target is currently executing. Must be
837 implemented on targets that support reverse execution and async
838 mode. The default simply returns forward execution. */
839 enum exec_direction_kind (*to_execution_direction) (struct target_ops *)
840 TARGET_DEFAULT_FUNC (default_execution_direction);
842 /* Does this target support debugging multiple processes
844 int (*to_supports_multi_process) (struct target_ops *)
845 TARGET_DEFAULT_RETURN (0);
847 /* Does this target support enabling and disabling tracepoints while a trace
848 experiment is running? */
849 int (*to_supports_enable_disable_tracepoint) (struct target_ops *)
850 TARGET_DEFAULT_RETURN (0);
852 /* Does this target support disabling address space randomization? */
853 int (*to_supports_disable_randomization) (struct target_ops *);
855 /* Does this target support the tracenz bytecode for string collection? */
856 int (*to_supports_string_tracing) (struct target_ops *)
857 TARGET_DEFAULT_RETURN (0);
859 /* Does this target support evaluation of breakpoint conditions on its
861 int (*to_supports_evaluation_of_breakpoint_conditions) (struct target_ops *)
862 TARGET_DEFAULT_RETURN (0);
864 /* Does this target support evaluation of breakpoint commands on its
866 int (*to_can_run_breakpoint_commands) (struct target_ops *)
867 TARGET_DEFAULT_RETURN (0);
869 /* Determine current architecture of thread PTID.
871 The target is supposed to determine the architecture of the code where
872 the target is currently stopped at (on Cell, if a target is in spu_run,
873 to_thread_architecture would return SPU, otherwise PPC32 or PPC64).
874 This is architecture used to perform decr_pc_after_break adjustment,
875 and also determines the frame architecture of the innermost frame.
876 ptrace operations need to operate according to target_gdbarch ().
878 The default implementation always returns target_gdbarch (). */
879 struct gdbarch *(*to_thread_architecture) (struct target_ops *, ptid_t)
880 TARGET_DEFAULT_FUNC (default_thread_architecture);
882 /* Determine current address space of thread PTID.
884 The default implementation always returns the inferior's
886 struct address_space *(*to_thread_address_space) (struct target_ops *,
888 TARGET_DEFAULT_FUNC (default_thread_address_space);
890 /* Target file operations. */
892 /* Return nonzero if the filesystem seen by the current inferior
893 is the local filesystem, zero otherwise. */
894 int (*to_filesystem_is_local) (struct target_ops *)
895 TARGET_DEFAULT_RETURN (1);
897 /* Open FILENAME on the target, in the filesystem as seen by INF,
898 using FLAGS and MODE. If INF is NULL, use the filesystem seen
899 by the debugger (GDB or, for remote targets, the remote stub).
900 If WARN_IF_SLOW is nonzero, print a warning message if the file
901 is being accessed over a link that may be slow. Return a
902 target file descriptor, or -1 if an error occurs (and set
904 int (*to_fileio_open) (struct target_ops *,
905 struct inferior *inf, const char *filename,
906 int flags, int mode, int warn_if_slow,
909 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
910 Return the number of bytes written, or -1 if an error occurs
911 (and set *TARGET_ERRNO). */
912 int (*to_fileio_pwrite) (struct target_ops *,
913 int fd, const gdb_byte *write_buf, int len,
914 ULONGEST offset, int *target_errno);
916 /* Read up to LEN bytes FD on the target into READ_BUF.
917 Return the number of bytes read, or -1 if an error occurs
918 (and set *TARGET_ERRNO). */
919 int (*to_fileio_pread) (struct target_ops *,
920 int fd, gdb_byte *read_buf, int len,
921 ULONGEST offset, int *target_errno);
923 /* Get information about the file opened as FD and put it in
924 SB. Return 0 on success, or -1 if an error occurs (and set
926 int (*to_fileio_fstat) (struct target_ops *,
927 int fd, struct stat *sb, int *target_errno);
929 /* Close FD on the target. Return 0, or -1 if an error occurs
930 (and set *TARGET_ERRNO). */
931 int (*to_fileio_close) (struct target_ops *, int fd, int *target_errno);
933 /* Unlink FILENAME on the target, in the filesystem as seen by
934 INF. If INF is NULL, use the filesystem seen by the debugger
935 (GDB or, for remote targets, the remote stub). Return 0, or
936 -1 if an error occurs (and set *TARGET_ERRNO). */
937 int (*to_fileio_unlink) (struct target_ops *,
938 struct inferior *inf,
939 const char *filename,
942 /* Read value of symbolic link FILENAME on the target, in the
943 filesystem as seen by INF. If INF is NULL, use the filesystem
944 seen by the debugger (GDB or, for remote targets, the remote
945 stub). Return a null-terminated string allocated via xmalloc,
946 or NULL if an error occurs (and set *TARGET_ERRNO). */
947 char *(*to_fileio_readlink) (struct target_ops *,
948 struct inferior *inf,
949 const char *filename,
953 /* Implement the "info proc" command. */
954 void (*to_info_proc) (struct target_ops *, const char *,
955 enum info_proc_what);
957 /* Tracepoint-related operations. */
959 /* Prepare the target for a tracing run. */
960 void (*to_trace_init) (struct target_ops *)
961 TARGET_DEFAULT_NORETURN (tcomplain ());
963 /* Send full details of a tracepoint location to the target. */
964 void (*to_download_tracepoint) (struct target_ops *,
965 struct bp_location *location)
966 TARGET_DEFAULT_NORETURN (tcomplain ());
968 /* Is the target able to download tracepoint locations in current
970 int (*to_can_download_tracepoint) (struct target_ops *)
971 TARGET_DEFAULT_RETURN (0);
973 /* Send full details of a trace state variable to the target. */
974 void (*to_download_trace_state_variable) (struct target_ops *,
975 struct trace_state_variable *tsv)
976 TARGET_DEFAULT_NORETURN (tcomplain ());
978 /* Enable a tracepoint on the target. */
979 void (*to_enable_tracepoint) (struct target_ops *,
980 struct bp_location *location)
981 TARGET_DEFAULT_NORETURN (tcomplain ());
983 /* Disable a tracepoint on the target. */
984 void (*to_disable_tracepoint) (struct target_ops *,
985 struct bp_location *location)
986 TARGET_DEFAULT_NORETURN (tcomplain ());
988 /* Inform the target info of memory regions that are readonly
989 (such as text sections), and so it should return data from
990 those rather than look in the trace buffer. */
991 void (*to_trace_set_readonly_regions) (struct target_ops *)
992 TARGET_DEFAULT_NORETURN (tcomplain ());
994 /* Start a trace run. */
995 void (*to_trace_start) (struct target_ops *)
996 TARGET_DEFAULT_NORETURN (tcomplain ());
998 /* Get the current status of a tracing run. */
999 int (*to_get_trace_status) (struct target_ops *, struct trace_status *ts)
1000 TARGET_DEFAULT_RETURN (-1);
1002 void (*to_get_tracepoint_status) (struct target_ops *,
1003 struct breakpoint *tp,
1004 struct uploaded_tp *utp)
1005 TARGET_DEFAULT_NORETURN (tcomplain ());
1007 /* Stop a trace run. */
1008 void (*to_trace_stop) (struct target_ops *)
1009 TARGET_DEFAULT_NORETURN (tcomplain ());
1011 /* Ask the target to find a trace frame of the given type TYPE,
1012 using NUM, ADDR1, and ADDR2 as search parameters. Returns the
1013 number of the trace frame, and also the tracepoint number at
1014 TPP. If no trace frame matches, return -1. May throw if the
1016 int (*to_trace_find) (struct target_ops *,
1017 enum trace_find_type type, int num,
1018 CORE_ADDR addr1, CORE_ADDR addr2, int *tpp)
1019 TARGET_DEFAULT_RETURN (-1);
1021 /* Get the value of the trace state variable number TSV, returning
1022 1 if the value is known and writing the value itself into the
1023 location pointed to by VAL, else returning 0. */
1024 int (*to_get_trace_state_variable_value) (struct target_ops *,
1025 int tsv, LONGEST *val)
1026 TARGET_DEFAULT_RETURN (0);
1028 int (*to_save_trace_data) (struct target_ops *, const char *filename)
1029 TARGET_DEFAULT_NORETURN (tcomplain ());
1031 int (*to_upload_tracepoints) (struct target_ops *,
1032 struct uploaded_tp **utpp)
1033 TARGET_DEFAULT_RETURN (0);
1035 int (*to_upload_trace_state_variables) (struct target_ops *,
1036 struct uploaded_tsv **utsvp)
1037 TARGET_DEFAULT_RETURN (0);
1039 LONGEST (*to_get_raw_trace_data) (struct target_ops *, gdb_byte *buf,
1040 ULONGEST offset, LONGEST len)
1041 TARGET_DEFAULT_NORETURN (tcomplain ());
1043 /* Get the minimum length of instruction on which a fast tracepoint
1044 may be set on the target. If this operation is unsupported,
1045 return -1. If for some reason the minimum length cannot be
1046 determined, return 0. */
1047 int (*to_get_min_fast_tracepoint_insn_len) (struct target_ops *)
1048 TARGET_DEFAULT_RETURN (-1);
1050 /* Set the target's tracing behavior in response to unexpected
1051 disconnection - set VAL to 1 to keep tracing, 0 to stop. */
1052 void (*to_set_disconnected_tracing) (struct target_ops *, int val)
1053 TARGET_DEFAULT_IGNORE ();
1054 void (*to_set_circular_trace_buffer) (struct target_ops *, int val)
1055 TARGET_DEFAULT_IGNORE ();
1056 /* Set the size of trace buffer in the target. */
1057 void (*to_set_trace_buffer_size) (struct target_ops *, LONGEST val)
1058 TARGET_DEFAULT_IGNORE ();
1060 /* Add/change textual notes about the trace run, returning 1 if
1061 successful, 0 otherwise. */
1062 int (*to_set_trace_notes) (struct target_ops *,
1063 const char *user, const char *notes,
1064 const char *stopnotes)
1065 TARGET_DEFAULT_RETURN (0);
1067 /* Return the processor core that thread PTID was last seen on.
1068 This information is updated only when:
1069 - update_thread_list is called
1071 If the core cannot be determined -- either for the specified
1072 thread, or right now, or in this debug session, or for this
1073 target -- return -1. */
1074 int (*to_core_of_thread) (struct target_ops *, ptid_t ptid)
1075 TARGET_DEFAULT_RETURN (-1);
1077 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range
1078 matches the contents of [DATA,DATA+SIZE). Returns 1 if there's
1079 a match, 0 if there's a mismatch, and -1 if an error is
1080 encountered while reading memory. */
1081 int (*to_verify_memory) (struct target_ops *, const gdb_byte *data,
1082 CORE_ADDR memaddr, ULONGEST size)
1083 TARGET_DEFAULT_FUNC (default_verify_memory);
1085 /* Return the address of the start of the Thread Information Block
1086 a Windows OS specific feature. */
1087 int (*to_get_tib_address) (struct target_ops *,
1088 ptid_t ptid, CORE_ADDR *addr)
1089 TARGET_DEFAULT_NORETURN (tcomplain ());
1091 /* Send the new settings of write permission variables. */
1092 void (*to_set_permissions) (struct target_ops *)
1093 TARGET_DEFAULT_IGNORE ();
1095 /* Look for a static tracepoint marker at ADDR, and fill in MARKER
1096 with its details. Return 1 on success, 0 on failure. */
1097 int (*to_static_tracepoint_marker_at) (struct target_ops *, CORE_ADDR,
1098 struct static_tracepoint_marker *marker)
1099 TARGET_DEFAULT_RETURN (0);
1101 /* Return a vector of all tracepoints markers string id ID, or all
1102 markers if ID is NULL. */
1103 VEC(static_tracepoint_marker_p) *(*to_static_tracepoint_markers_by_strid) (struct target_ops *, const char *id)
1104 TARGET_DEFAULT_NORETURN (tcomplain ());
1106 /* Return a traceframe info object describing the current
1107 traceframe's contents. This method should not cache data;
1108 higher layers take care of caching, invalidating, and
1109 re-fetching when necessary. */
1110 struct traceframe_info *(*to_traceframe_info) (struct target_ops *)
1111 TARGET_DEFAULT_NORETURN (tcomplain ());
1113 /* Ask the target to use or not to use agent according to USE. Return 1
1114 successful, 0 otherwise. */
1115 int (*to_use_agent) (struct target_ops *, int use)
1116 TARGET_DEFAULT_NORETURN (tcomplain ());
1118 /* Is the target able to use agent in current state? */
1119 int (*to_can_use_agent) (struct target_ops *)
1120 TARGET_DEFAULT_RETURN (0);
1122 /* Check whether the target supports branch tracing. */
1123 int (*to_supports_btrace) (struct target_ops *, enum btrace_format)
1124 TARGET_DEFAULT_RETURN (0);
1126 /* Enable branch tracing for PTID using CONF configuration.
1127 Return a branch trace target information struct for reading and for
1128 disabling branch trace. */
1129 struct btrace_target_info *(*to_enable_btrace) (struct target_ops *,
1131 const struct btrace_config *conf)
1132 TARGET_DEFAULT_NORETURN (tcomplain ());
1134 /* Disable branch tracing and deallocate TINFO. */
1135 void (*to_disable_btrace) (struct target_ops *,
1136 struct btrace_target_info *tinfo)
1137 TARGET_DEFAULT_NORETURN (tcomplain ());
1139 /* Disable branch tracing and deallocate TINFO. This function is similar
1140 to to_disable_btrace, except that it is called during teardown and is
1141 only allowed to perform actions that are safe. A counter-example would
1142 be attempting to talk to a remote target. */
1143 void (*to_teardown_btrace) (struct target_ops *,
1144 struct btrace_target_info *tinfo)
1145 TARGET_DEFAULT_NORETURN (tcomplain ());
1147 /* Read branch trace data for the thread indicated by BTINFO into DATA.
1148 DATA is cleared before new trace is added. */
1149 enum btrace_error (*to_read_btrace) (struct target_ops *self,
1150 struct btrace_data *data,
1151 struct btrace_target_info *btinfo,
1152 enum btrace_read_type type)
1153 TARGET_DEFAULT_NORETURN (tcomplain ());
1155 /* Get the branch trace configuration. */
1156 const struct btrace_config *(*to_btrace_conf) (struct target_ops *self,
1157 const struct btrace_target_info *)
1158 TARGET_DEFAULT_RETURN (NULL);
1160 /* Current recording method. */
1161 enum record_method (*to_record_method) (struct target_ops *, ptid_t ptid)
1162 TARGET_DEFAULT_RETURN (RECORD_METHOD_NONE);
1164 /* Stop trace recording. */
1165 void (*to_stop_recording) (struct target_ops *)
1166 TARGET_DEFAULT_IGNORE ();
1168 /* Print information about the recording. */
1169 void (*to_info_record) (struct target_ops *)
1170 TARGET_DEFAULT_IGNORE ();
1172 /* Save the recorded execution trace into a file. */
1173 void (*to_save_record) (struct target_ops *, const char *filename)
1174 TARGET_DEFAULT_NORETURN (tcomplain ());
1176 /* Delete the recorded execution trace from the current position
1178 void (*to_delete_record) (struct target_ops *)
1179 TARGET_DEFAULT_NORETURN (tcomplain ());
1181 /* Query if the record target is currently replaying PTID. */
1182 int (*to_record_is_replaying) (struct target_ops *, ptid_t ptid)
1183 TARGET_DEFAULT_RETURN (0);
1185 /* Query if the record target will replay PTID if it were resumed in
1186 execution direction DIR. */
1187 int (*to_record_will_replay) (struct target_ops *, ptid_t ptid, int dir)
1188 TARGET_DEFAULT_RETURN (0);
1190 /* Stop replaying. */
1191 void (*to_record_stop_replaying) (struct target_ops *)
1192 TARGET_DEFAULT_IGNORE ();
1194 /* Go to the begin of the execution trace. */
1195 void (*to_goto_record_begin) (struct target_ops *)
1196 TARGET_DEFAULT_NORETURN (tcomplain ());
1198 /* Go to the end of the execution trace. */
1199 void (*to_goto_record_end) (struct target_ops *)
1200 TARGET_DEFAULT_NORETURN (tcomplain ());
1202 /* Go to a specific location in the recorded execution trace. */
1203 void (*to_goto_record) (struct target_ops *, ULONGEST insn)
1204 TARGET_DEFAULT_NORETURN (tcomplain ());
1206 /* Disassemble SIZE instructions in the recorded execution trace from
1207 the current position.
1208 If SIZE < 0, disassemble abs (SIZE) preceding instructions; otherwise,
1209 disassemble SIZE succeeding instructions. */
1210 void (*to_insn_history) (struct target_ops *, int size,
1211 gdb_disassembly_flags flags)
1212 TARGET_DEFAULT_NORETURN (tcomplain ());
1214 /* Disassemble SIZE instructions in the recorded execution trace around
1216 If SIZE < 0, disassemble abs (SIZE) instructions before FROM; otherwise,
1217 disassemble SIZE instructions after FROM. */
1218 void (*to_insn_history_from) (struct target_ops *,
1219 ULONGEST from, int size,
1220 gdb_disassembly_flags flags)
1221 TARGET_DEFAULT_NORETURN (tcomplain ());
1223 /* Disassemble a section of the recorded execution trace from instruction
1224 BEGIN (inclusive) to instruction END (inclusive). */
1225 void (*to_insn_history_range) (struct target_ops *,
1226 ULONGEST begin, ULONGEST end,
1227 gdb_disassembly_flags flags)
1228 TARGET_DEFAULT_NORETURN (tcomplain ());
1230 /* Print a function trace of the recorded execution trace.
1231 If SIZE < 0, print abs (SIZE) preceding functions; otherwise, print SIZE
1232 succeeding functions. */
1233 void (*to_call_history) (struct target_ops *, int size, int flags)
1234 TARGET_DEFAULT_NORETURN (tcomplain ());
1236 /* Print a function trace of the recorded execution trace starting
1238 If SIZE < 0, print abs (SIZE) functions before FROM; otherwise, print
1239 SIZE functions after FROM. */
1240 void (*to_call_history_from) (struct target_ops *,
1241 ULONGEST begin, int size, int flags)
1242 TARGET_DEFAULT_NORETURN (tcomplain ());
1244 /* Print a function trace of an execution trace section from function BEGIN
1245 (inclusive) to function END (inclusive). */
1246 void (*to_call_history_range) (struct target_ops *,
1247 ULONGEST begin, ULONGEST end, int flags)
1248 TARGET_DEFAULT_NORETURN (tcomplain ());
1250 /* Nonzero if TARGET_OBJECT_LIBRARIES_SVR4 may be read with a
1252 int (*to_augmented_libraries_svr4_read) (struct target_ops *)
1253 TARGET_DEFAULT_RETURN (0);
1255 /* Those unwinders are tried before any other arch unwinders. If
1256 SELF doesn't have unwinders, it should delegate to the
1257 "beneath" target. */
1258 const struct frame_unwind *(*to_get_unwinder) (struct target_ops *self)
1259 TARGET_DEFAULT_RETURN (NULL);
1261 const struct frame_unwind *(*to_get_tailcall_unwinder) (struct target_ops *self)
1262 TARGET_DEFAULT_RETURN (NULL);
1264 /* Prepare to generate a core file. */
1265 void (*to_prepare_to_generate_core) (struct target_ops *)
1266 TARGET_DEFAULT_IGNORE ();
1268 /* Cleanup after generating a core file. */
1269 void (*to_done_generating_core) (struct target_ops *)
1270 TARGET_DEFAULT_IGNORE ();
1273 /* Need sub-structure for target machine related rather than comm related?
1277 /* Magic number for checking ops size. If a struct doesn't end with this
1278 number, somebody changed the declaration but didn't change all the
1279 places that initialize one. */
1281 #define OPS_MAGIC 3840
1283 /* The ops structure for our "current" target process. This should
1284 never be NULL. If there is no target, it points to the dummy_target. */
1286 extern struct target_ops current_target;
1288 /* Define easy words for doing these operations on our current target. */
1290 #define target_shortname (current_target.to_shortname)
1291 #define target_longname (current_target.to_longname)
1293 /* Does whatever cleanup is required for a target that we are no
1294 longer going to be calling. This routine is automatically always
1295 called after popping the target off the target stack - the target's
1296 own methods are no longer available through the target vector.
1297 Closing file descriptors and freeing all memory allocated memory are
1298 typical things it should do. */
1300 void target_close (struct target_ops *targ);
1302 /* Find the correct target to use for "attach". If a target on the
1303 current stack supports attaching, then it is returned. Otherwise,
1304 the default run target is returned. */
1306 extern struct target_ops *find_attach_target (void);
1308 /* Find the correct target to use for "run". If a target on the
1309 current stack supports creating a new inferior, then it is
1310 returned. Otherwise, the default run target is returned. */
1312 extern struct target_ops *find_run_target (void);
1314 /* Some targets don't generate traps when attaching to the inferior,
1315 or their target_attach implementation takes care of the waiting.
1316 These targets must set to_attach_no_wait. */
1318 #define target_attach_no_wait \
1319 (current_target.to_attach_no_wait)
1321 /* The target_attach operation places a process under debugger control,
1322 and stops the process.
1324 This operation provides a target-specific hook that allows the
1325 necessary bookkeeping to be performed after an attach completes. */
1326 #define target_post_attach(pid) \
1327 (*current_target.to_post_attach) (¤t_target, pid)
1329 /* Display a message indicating we're about to detach from the current
1330 inferior process. */
1332 extern void target_announce_detach (int from_tty);
1334 /* Takes a program previously attached to and detaches it.
1335 The program may resume execution (some targets do, some don't) and will
1336 no longer stop on signals, etc. We better not have left any breakpoints
1337 in the program or it'll die when it hits one. ARGS is arguments
1338 typed by the user (e.g. a signal to send the process). FROM_TTY
1339 says whether to be verbose or not. */
1341 extern void target_detach (const char *, int);
1343 /* Disconnect from the current target without resuming it (leaving it
1344 waiting for a debugger). */
1346 extern void target_disconnect (const char *, int);
1348 /* Resume execution (or prepare for execution) of a target thread,
1349 process or all processes. STEP says whether to hardware
1350 single-step or to run free; SIGGNAL is the signal to be given to
1351 the target, or GDB_SIGNAL_0 for no signal. The caller may not pass
1352 GDB_SIGNAL_DEFAULT. A specific PTID means `step/resume only this
1353 process id'. A wildcard PTID (all threads, or all threads of
1354 process) means `step/resume INFERIOR_PTID, and let other threads
1355 (for which the wildcard PTID matches) resume with their
1356 'thread->suspend.stop_signal' signal (usually GDB_SIGNAL_0) if it
1357 is in "pass" state, or with no signal if in "no pass" state.
1359 In order to efficiently handle batches of resumption requests,
1360 targets may implement this method such that it records the
1361 resumption request, but defers the actual resumption to the
1362 target_commit_resume method implementation. See
1363 target_commit_resume below. */
1364 extern void target_resume (ptid_t ptid, int step, enum gdb_signal signal);
1366 /* Commit a series of resumption requests previously prepared with
1367 target_resume calls.
1369 GDB always calls target_commit_resume after calling target_resume
1370 one or more times. A target may thus use this method in
1371 coordination with the target_resume method to batch target-side
1372 resumption requests. In that case, the target doesn't actually
1373 resume in its target_resume implementation. Instead, it prepares
1374 the resumption in target_resume, and defers the actual resumption
1375 to target_commit_resume. E.g., the remote target uses this to
1376 coalesce multiple resumption requests in a single vCont packet. */
1377 extern void target_commit_resume ();
1379 /* Setup to defer target_commit_resume calls, and return a cleanup
1380 that reactivates target_commit_resume, if it was previously
1382 struct cleanup *make_cleanup_defer_target_commit_resume ();
1384 /* For target_read_memory see target/target.h. */
1386 /* The default target_ops::to_wait implementation. */
1388 extern ptid_t default_target_wait (struct target_ops *ops,
1390 struct target_waitstatus *status,
1393 /* Fetch at least register REGNO, or all regs if regno == -1. No result. */
1395 extern void target_fetch_registers (struct regcache *regcache, int regno);
1397 /* Store at least register REGNO, or all regs if REGNO == -1.
1398 It can store as many registers as it wants to, so target_prepare_to_store
1399 must have been previously called. Calls error() if there are problems. */
1401 extern void target_store_registers (struct regcache *regcache, int regs);
1403 /* Get ready to modify the registers array. On machines which store
1404 individual registers, this doesn't need to do anything. On machines
1405 which store all the registers in one fell swoop, this makes sure
1406 that REGISTERS contains all the registers from the program being
1409 #define target_prepare_to_store(regcache) \
1410 (*current_target.to_prepare_to_store) (¤t_target, regcache)
1412 /* Determine current address space of thread PTID. */
1414 struct address_space *target_thread_address_space (ptid_t);
1416 /* Implement the "info proc" command. This returns one if the request
1417 was handled, and zero otherwise. It can also throw an exception if
1418 an error was encountered while attempting to handle the
1421 int target_info_proc (const char *, enum info_proc_what);
1423 /* Returns true if this target can disable address space randomization. */
1425 int target_supports_disable_randomization (void);
1427 /* Returns true if this target can enable and disable tracepoints
1428 while a trace experiment is running. */
1430 #define target_supports_enable_disable_tracepoint() \
1431 (*current_target.to_supports_enable_disable_tracepoint) (¤t_target)
1433 #define target_supports_string_tracing() \
1434 (*current_target.to_supports_string_tracing) (¤t_target)
1436 /* Returns true if this target can handle breakpoint conditions
1439 #define target_supports_evaluation_of_breakpoint_conditions() \
1440 (*current_target.to_supports_evaluation_of_breakpoint_conditions) (¤t_target)
1442 /* Returns true if this target can handle breakpoint commands
1445 #define target_can_run_breakpoint_commands() \
1446 (*current_target.to_can_run_breakpoint_commands) (¤t_target)
1448 extern int target_read_string (CORE_ADDR, char **, int, int *);
1450 /* For target_read_memory see target/target.h. */
1452 extern int target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr,
1455 extern int target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len);
1457 extern int target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len);
1459 /* For target_write_memory see target/target.h. */
1461 extern int target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr,
1464 /* Fetches the target's memory map. If one is found it is sorted
1465 and returned, after some consistency checking. Otherwise, NULL
1467 VEC(mem_region_s) *target_memory_map (void);
1469 /* Erases all flash memory regions on the target. */
1470 void flash_erase_command (char *cmd, int from_tty);
1472 /* Erase the specified flash region. */
1473 void target_flash_erase (ULONGEST address, LONGEST length);
1475 /* Finish a sequence of flash operations. */
1476 void target_flash_done (void);
1478 /* Describes a request for a memory write operation. */
1479 struct memory_write_request
1481 /* Begining address that must be written. */
1483 /* Past-the-end address. */
1485 /* The data to write. */
1487 /* A callback baton for progress reporting for this request. */
1490 typedef struct memory_write_request memory_write_request_s;
1491 DEF_VEC_O(memory_write_request_s);
1493 /* Enumeration specifying different flash preservation behaviour. */
1494 enum flash_preserve_mode
1500 /* Write several memory blocks at once. This version can be more
1501 efficient than making several calls to target_write_memory, in
1502 particular because it can optimize accesses to flash memory.
1504 Moreover, this is currently the only memory access function in gdb
1505 that supports writing to flash memory, and it should be used for
1506 all cases where access to flash memory is desirable.
1508 REQUESTS is the vector (see vec.h) of memory_write_request.
1509 PRESERVE_FLASH_P indicates what to do with blocks which must be
1510 erased, but not completely rewritten.
1511 PROGRESS_CB is a function that will be periodically called to provide
1512 feedback to user. It will be called with the baton corresponding
1513 to the request currently being written. It may also be called
1514 with a NULL baton, when preserved flash sectors are being rewritten.
1516 The function returns 0 on success, and error otherwise. */
1517 int target_write_memory_blocks (VEC(memory_write_request_s) *requests,
1518 enum flash_preserve_mode preserve_flash_p,
1519 void (*progress_cb) (ULONGEST, void *));
1521 /* Print a line about the current target. */
1523 #define target_files_info() \
1524 (*current_target.to_files_info) (¤t_target)
1526 /* Insert a breakpoint at address BP_TGT->placed_address in
1527 the target machine. Returns 0 for success, and returns non-zero or
1528 throws an error (with a detailed failure reason error code and
1529 message) otherwise. */
1531 extern int target_insert_breakpoint (struct gdbarch *gdbarch,
1532 struct bp_target_info *bp_tgt);
1534 /* Remove a breakpoint at address BP_TGT->placed_address in the target
1535 machine. Result is 0 for success, non-zero for error. */
1537 extern int target_remove_breakpoint (struct gdbarch *gdbarch,
1538 struct bp_target_info *bp_tgt,
1539 enum remove_bp_reason reason);
1541 /* Return true if the target stack has a non-default
1542 "to_terminal_ours" method. */
1544 extern int target_supports_terminal_ours (void);
1546 /* Kill the inferior process. Make it go away. */
1548 extern void target_kill (void);
1550 /* Load an executable file into the target process. This is expected
1551 to not only bring new code into the target process, but also to
1552 update GDB's symbol tables to match.
1554 ARG contains command-line arguments, to be broken down with
1555 buildargv (). The first non-switch argument is the filename to
1556 load, FILE; the second is a number (as parsed by strtoul (..., ...,
1557 0)), which is an offset to apply to the load addresses of FILE's
1558 sections. The target may define switches, or other non-switch
1559 arguments, as it pleases. */
1561 extern void target_load (const char *arg, int from_tty);
1563 /* Some targets (such as ttrace-based HPUX) don't allow us to request
1564 notification of inferior events such as fork and vork immediately
1565 after the inferior is created. (This because of how gdb gets an
1566 inferior created via invoking a shell to do it. In such a scenario,
1567 if the shell init file has commands in it, the shell will fork and
1568 exec for each of those commands, and we will see each such fork
1571 Such targets will supply an appropriate definition for this function. */
1573 #define target_post_startup_inferior(ptid) \
1574 (*current_target.to_post_startup_inferior) (¤t_target, ptid)
1576 /* On some targets, we can catch an inferior fork or vfork event when
1577 it occurs. These functions insert/remove an already-created
1578 catchpoint for such events. They return 0 for success, 1 if the
1579 catchpoint type is not supported and -1 for failure. */
1581 #define target_insert_fork_catchpoint(pid) \
1582 (*current_target.to_insert_fork_catchpoint) (¤t_target, pid)
1584 #define target_remove_fork_catchpoint(pid) \
1585 (*current_target.to_remove_fork_catchpoint) (¤t_target, pid)
1587 #define target_insert_vfork_catchpoint(pid) \
1588 (*current_target.to_insert_vfork_catchpoint) (¤t_target, pid)
1590 #define target_remove_vfork_catchpoint(pid) \
1591 (*current_target.to_remove_vfork_catchpoint) (¤t_target, pid)
1593 /* If the inferior forks or vforks, this function will be called at
1594 the next resume in order to perform any bookkeeping and fiddling
1595 necessary to continue debugging either the parent or child, as
1596 requested, and releasing the other. Information about the fork
1597 or vfork event is available via get_last_target_status ().
1598 This function returns 1 if the inferior should not be resumed
1599 (i.e. there is another event pending). */
1601 int target_follow_fork (int follow_child, int detach_fork);
1603 /* Handle the target-specific bookkeeping required when the inferior
1604 makes an exec call. INF is the exec'd inferior. */
1606 void target_follow_exec (struct inferior *inf, char *execd_pathname);
1608 /* On some targets, we can catch an inferior exec event when it
1609 occurs. These functions insert/remove an already-created
1610 catchpoint for such events. They return 0 for success, 1 if the
1611 catchpoint type is not supported and -1 for failure. */
1613 #define target_insert_exec_catchpoint(pid) \
1614 (*current_target.to_insert_exec_catchpoint) (¤t_target, pid)
1616 #define target_remove_exec_catchpoint(pid) \
1617 (*current_target.to_remove_exec_catchpoint) (¤t_target, pid)
1621 NEEDED is nonzero if any syscall catch (of any kind) is requested.
1622 If NEEDED is zero, it means the target can disable the mechanism to
1623 catch system calls because there are no more catchpoints of this type.
1625 ANY_COUNT is nonzero if a generic (filter-less) syscall catch is
1626 being requested. In this case, both TABLE_SIZE and TABLE should
1629 TABLE_SIZE is the number of elements in TABLE. It only matters if
1632 TABLE is an array of ints, indexed by syscall number. An element in
1633 this array is nonzero if that syscall should be caught. This argument
1634 only matters if ANY_COUNT is zero.
1636 Return 0 for success, 1 if syscall catchpoints are not supported or -1
1639 #define target_set_syscall_catchpoint(pid, needed, any_count, table_size, table) \
1640 (*current_target.to_set_syscall_catchpoint) (¤t_target, \
1641 pid, needed, any_count, \
1644 /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the
1645 exit code of PID, if any. */
1647 #define target_has_exited(pid,wait_status,exit_status) \
1648 (*current_target.to_has_exited) (¤t_target, \
1649 pid,wait_status,exit_status)
1651 /* The debugger has completed a blocking wait() call. There is now
1652 some process event that must be processed. This function should
1653 be defined by those targets that require the debugger to perform
1654 cleanup or internal state changes in response to the process event. */
1656 /* For target_mourn_inferior see target/target.h. */
1658 /* Does target have enough data to do a run or attach command? */
1660 #define target_can_run(t) \
1661 ((t)->to_can_run) (t)
1663 /* Set list of signals to be handled in the target.
1665 PASS_SIGNALS is an array of size NSIG, indexed by target signal number
1666 (enum gdb_signal). For every signal whose entry in this array is
1667 non-zero, the target is allowed -but not required- to skip reporting
1668 arrival of the signal to the GDB core by returning from target_wait,
1669 and to pass the signal directly to the inferior instead.
1671 However, if the target is hardware single-stepping a thread that is
1672 about to receive a signal, it needs to be reported in any case, even
1673 if mentioned in a previous target_pass_signals call. */
1675 extern void target_pass_signals (int nsig, unsigned char *pass_signals);
1677 /* Set list of signals the target may pass to the inferior. This
1678 directly maps to the "handle SIGNAL pass/nopass" setting.
1680 PROGRAM_SIGNALS is an array of size NSIG, indexed by target signal
1681 number (enum gdb_signal). For every signal whose entry in this
1682 array is non-zero, the target is allowed to pass the signal to the
1683 inferior. Signals not present in the array shall be silently
1684 discarded. This does not influence whether to pass signals to the
1685 inferior as a result of a target_resume call. This is useful in
1686 scenarios where the target needs to decide whether to pass or not a
1687 signal to the inferior without GDB core involvement, such as for
1688 example, when detaching (as threads may have been suspended with
1689 pending signals not reported to GDB). */
1691 extern void target_program_signals (int nsig, unsigned char *program_signals);
1693 /* Check to see if a thread is still alive. */
1695 extern int target_thread_alive (ptid_t ptid);
1697 /* Sync the target's threads with GDB's thread list. */
1699 extern void target_update_thread_list (void);
1701 /* Make target stop in a continuable fashion. (For instance, under
1702 Unix, this should act like SIGSTOP). Note that this function is
1703 asynchronous: it does not wait for the target to become stopped
1704 before returning. If this is the behavior you want please use
1705 target_stop_and_wait. */
1707 extern void target_stop (ptid_t ptid);
1709 /* Interrupt the target just like the user typed a ^C on the
1710 inferior's controlling terminal. (For instance, under Unix, this
1711 should act like SIGINT). This function is asynchronous. */
1713 extern void target_interrupt (ptid_t ptid);
1715 /* Pass a ^C, as determined to have been pressed by checking the quit
1716 flag, to the target. Normally calls target_interrupt, but remote
1717 targets may take the opportunity to detect the remote side is not
1718 responding and offer to disconnect. */
1720 extern void target_pass_ctrlc (void);
1722 /* The default target_ops::to_pass_ctrlc implementation. Simply calls
1723 target_interrupt. */
1724 extern void default_target_pass_ctrlc (struct target_ops *ops);
1726 /* Send the specified COMMAND to the target's monitor
1727 (shell,interpreter) for execution. The result of the query is
1728 placed in OUTBUF. */
1730 #define target_rcmd(command, outbuf) \
1731 (*current_target.to_rcmd) (¤t_target, command, outbuf)
1734 /* Does the target include all of memory, or only part of it? This
1735 determines whether we look up the target chain for other parts of
1736 memory if this target can't satisfy a request. */
1738 extern int target_has_all_memory_1 (void);
1739 #define target_has_all_memory target_has_all_memory_1 ()
1741 /* Does the target include memory? (Dummy targets don't.) */
1743 extern int target_has_memory_1 (void);
1744 #define target_has_memory target_has_memory_1 ()
1746 /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until
1747 we start a process.) */
1749 extern int target_has_stack_1 (void);
1750 #define target_has_stack target_has_stack_1 ()
1752 /* Does the target have registers? (Exec files don't.) */
1754 extern int target_has_registers_1 (void);
1755 #define target_has_registers target_has_registers_1 ()
1757 /* Does the target have execution? Can we make it jump (through
1758 hoops), or pop its stack a few times? This means that the current
1759 target is currently executing; for some targets, that's the same as
1760 whether or not the target is capable of execution, but there are
1761 also targets which can be current while not executing. In that
1762 case this will become true after to_create_inferior or
1765 extern int target_has_execution_1 (ptid_t);
1767 /* Like target_has_execution_1, but always passes inferior_ptid. */
1769 extern int target_has_execution_current (void);
1771 #define target_has_execution target_has_execution_current ()
1773 /* Default implementations for process_stratum targets. Return true
1774 if there's a selected inferior, false otherwise. */
1776 extern int default_child_has_all_memory (struct target_ops *ops);
1777 extern int default_child_has_memory (struct target_ops *ops);
1778 extern int default_child_has_stack (struct target_ops *ops);
1779 extern int default_child_has_registers (struct target_ops *ops);
1780 extern int default_child_has_execution (struct target_ops *ops,
1783 /* Can the target support the debugger control of thread execution?
1784 Can it lock the thread scheduler? */
1786 #define target_can_lock_scheduler \
1787 (current_target.to_has_thread_control & tc_schedlock)
1789 /* Controls whether async mode is permitted. */
1790 extern int target_async_permitted;
1792 /* Can the target support asynchronous execution? */
1793 #define target_can_async_p() (current_target.to_can_async_p (¤t_target))
1795 /* Is the target in asynchronous execution mode? */
1796 #define target_is_async_p() (current_target.to_is_async_p (¤t_target))
1798 /* Enables/disabled async target events. */
1799 extern void target_async (int enable);
1801 /* Enables/disables thread create and exit events. */
1802 extern void target_thread_events (int enable);
1804 /* Whether support for controlling the target backends always in
1805 non-stop mode is enabled. */
1806 extern enum auto_boolean target_non_stop_enabled;
1808 /* Is the target in non-stop mode? Some targets control the inferior
1809 in non-stop mode even with "set non-stop off". Always true if "set
1811 extern int target_is_non_stop_p (void);
1813 #define target_execution_direction() \
1814 (current_target.to_execution_direction (¤t_target))
1816 /* Converts a process id to a string. Usually, the string just contains
1817 `process xyz', but on some systems it may contain
1818 `process xyz thread abc'. */
1820 extern const char *target_pid_to_str (ptid_t ptid);
1822 extern const char *normal_pid_to_str (ptid_t ptid);
1824 /* Return a short string describing extra information about PID,
1825 e.g. "sleeping", "runnable", "running on LWP 3". Null return value
1828 #define target_extra_thread_info(TP) \
1829 (current_target.to_extra_thread_info (¤t_target, TP))
1831 /* Return the thread's name, or NULL if the target is unable to determine it.
1832 The returned value must not be freed by the caller. */
1834 extern const char *target_thread_name (struct thread_info *);
1836 /* Given a pointer to a thread library specific thread handle and
1837 its length, return a pointer to the corresponding thread_info struct. */
1839 extern struct thread_info *target_thread_handle_to_thread_info
1840 (const gdb_byte *thread_handle, int handle_len, struct inferior *inf);
1842 /* Attempts to find the pathname of the executable file
1843 that was run to create a specified process.
1845 The process PID must be stopped when this operation is used.
1847 If the executable file cannot be determined, NULL is returned.
1849 Else, a pointer to a character string containing the pathname
1850 is returned. This string should be copied into a buffer by
1851 the client if the string will not be immediately used, or if
1854 #define target_pid_to_exec_file(pid) \
1855 (current_target.to_pid_to_exec_file) (¤t_target, pid)
1857 /* See the to_thread_architecture description in struct target_ops. */
1859 #define target_thread_architecture(ptid) \
1860 (current_target.to_thread_architecture (¤t_target, ptid))
1863 * Iterator function for target memory regions.
1864 * Calls a callback function once for each memory region 'mapped'
1865 * in the child process. Defined as a simple macro rather than
1866 * as a function macro so that it can be tested for nullity.
1869 #define target_find_memory_regions(FUNC, DATA) \
1870 (current_target.to_find_memory_regions) (¤t_target, FUNC, DATA)
1873 * Compose corefile .note section.
1876 #define target_make_corefile_notes(BFD, SIZE_P) \
1877 (current_target.to_make_corefile_notes) (¤t_target, BFD, SIZE_P)
1879 /* Bookmark interfaces. */
1880 #define target_get_bookmark(ARGS, FROM_TTY) \
1881 (current_target.to_get_bookmark) (¤t_target, ARGS, FROM_TTY)
1883 #define target_goto_bookmark(ARG, FROM_TTY) \
1884 (current_target.to_goto_bookmark) (¤t_target, ARG, FROM_TTY)
1886 /* Hardware watchpoint interfaces. */
1888 /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or
1889 write). Only the INFERIOR_PTID task is being queried. */
1891 #define target_stopped_by_watchpoint() \
1892 ((*current_target.to_stopped_by_watchpoint) (¤t_target))
1894 /* Returns non-zero if the target stopped because it executed a
1895 software breakpoint instruction. */
1897 #define target_stopped_by_sw_breakpoint() \
1898 ((*current_target.to_stopped_by_sw_breakpoint) (¤t_target))
1900 #define target_supports_stopped_by_sw_breakpoint() \
1901 ((*current_target.to_supports_stopped_by_sw_breakpoint) (¤t_target))
1903 #define target_stopped_by_hw_breakpoint() \
1904 ((*current_target.to_stopped_by_hw_breakpoint) (¤t_target))
1906 #define target_supports_stopped_by_hw_breakpoint() \
1907 ((*current_target.to_supports_stopped_by_hw_breakpoint) (¤t_target))
1909 /* Non-zero if we have steppable watchpoints */
1911 #define target_have_steppable_watchpoint \
1912 (current_target.to_have_steppable_watchpoint)
1914 /* Non-zero if we have continuable watchpoints */
1916 #define target_have_continuable_watchpoint \
1917 (current_target.to_have_continuable_watchpoint)
1919 /* Provide defaults for hardware watchpoint functions. */
1921 /* If the *_hw_beakpoint functions have not been defined
1922 elsewhere use the definitions in the target vector. */
1924 /* Returns positive if we can set a hardware watchpoint of type TYPE.
1925 Returns negative if the target doesn't have enough hardware debug
1926 registers available. Return zero if hardware watchpoint of type
1927 TYPE isn't supported. TYPE is one of bp_hardware_watchpoint,
1928 bp_read_watchpoint, bp_write_watchpoint, or bp_hardware_breakpoint.
1929 CNT is the number of such watchpoints used so far, including this
1930 one. OTHERTYPE is the number of watchpoints of other types than
1931 this one used so far. */
1933 #define target_can_use_hardware_watchpoint(TYPE,CNT,OTHERTYPE) \
1934 (*current_target.to_can_use_hw_breakpoint) (¤t_target, \
1935 TYPE, CNT, OTHERTYPE)
1937 /* Returns the number of debug registers needed to watch the given
1938 memory region, or zero if not supported. */
1940 #define target_region_ok_for_hw_watchpoint(addr, len) \
1941 (*current_target.to_region_ok_for_hw_watchpoint) (¤t_target, \
1945 #define target_can_do_single_step() \
1946 (*current_target.to_can_do_single_step) (¤t_target)
1948 /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes.
1949 TYPE is 0 for write, 1 for read, and 2 for read/write accesses.
1950 COND is the expression for its condition, or NULL if there's none.
1951 Returns 0 for success, 1 if the watchpoint type is not supported,
1954 #define target_insert_watchpoint(addr, len, type, cond) \
1955 (*current_target.to_insert_watchpoint) (¤t_target, \
1956 addr, len, type, cond)
1958 #define target_remove_watchpoint(addr, len, type, cond) \
1959 (*current_target.to_remove_watchpoint) (¤t_target, \
1960 addr, len, type, cond)
1962 /* Insert a new masked watchpoint at ADDR using the mask MASK.
1963 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
1964 or hw_access for an access watchpoint. Returns 0 for success, 1 if
1965 masked watchpoints are not supported, -1 for failure. */
1967 extern int target_insert_mask_watchpoint (CORE_ADDR, CORE_ADDR,
1968 enum target_hw_bp_type);
1970 /* Remove a masked watchpoint at ADDR with the mask MASK.
1971 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
1972 or hw_access for an access watchpoint. Returns 0 for success, non-zero
1975 extern int target_remove_mask_watchpoint (CORE_ADDR, CORE_ADDR,
1976 enum target_hw_bp_type);
1978 /* Insert a hardware breakpoint at address BP_TGT->placed_address in
1979 the target machine. Returns 0 for success, and returns non-zero or
1980 throws an error (with a detailed failure reason error code and
1981 message) otherwise. */
1983 #define target_insert_hw_breakpoint(gdbarch, bp_tgt) \
1984 (*current_target.to_insert_hw_breakpoint) (¤t_target, \
1987 #define target_remove_hw_breakpoint(gdbarch, bp_tgt) \
1988 (*current_target.to_remove_hw_breakpoint) (¤t_target, \
1991 /* Return number of debug registers needed for a ranged breakpoint,
1992 or -1 if ranged breakpoints are not supported. */
1994 extern int target_ranged_break_num_registers (void);
1996 /* Return non-zero if target knows the data address which triggered this
1997 target_stopped_by_watchpoint, in such case place it to *ADDR_P. Only the
1998 INFERIOR_PTID task is being queried. */
1999 #define target_stopped_data_address(target, addr_p) \
2000 (*(target)->to_stopped_data_address) (target, addr_p)
2002 /* Return non-zero if ADDR is within the range of a watchpoint spanning
2003 LENGTH bytes beginning at START. */
2004 #define target_watchpoint_addr_within_range(target, addr, start, length) \
2005 (*(target)->to_watchpoint_addr_within_range) (target, addr, start, length)
2007 /* Return non-zero if the target is capable of using hardware to evaluate
2008 the condition expression. In this case, if the condition is false when
2009 the watched memory location changes, execution may continue without the
2010 debugger being notified.
2012 Due to limitations in the hardware implementation, it may be capable of
2013 avoiding triggering the watchpoint in some cases where the condition
2014 expression is false, but may report some false positives as well.
2015 For this reason, GDB will still evaluate the condition expression when
2016 the watchpoint triggers. */
2017 #define target_can_accel_watchpoint_condition(addr, len, type, cond) \
2018 (*current_target.to_can_accel_watchpoint_condition) (¤t_target, \
2019 addr, len, type, cond)
2021 /* Return number of debug registers needed for a masked watchpoint,
2022 -1 if masked watchpoints are not supported or -2 if the given address
2023 and mask combination cannot be used. */
2025 extern int target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask);
2027 /* Target can execute in reverse? */
2028 #define target_can_execute_reverse \
2029 current_target.to_can_execute_reverse (¤t_target)
2031 extern const struct target_desc *target_read_description (struct target_ops *);
2033 #define target_get_ada_task_ptid(lwp, tid) \
2034 (*current_target.to_get_ada_task_ptid) (¤t_target, lwp,tid)
2036 /* Utility implementation of searching memory. */
2037 extern int simple_search_memory (struct target_ops* ops,
2038 CORE_ADDR start_addr,
2039 ULONGEST search_space_len,
2040 const gdb_byte *pattern,
2041 ULONGEST pattern_len,
2042 CORE_ADDR *found_addrp);
2044 /* Main entry point for searching memory. */
2045 extern int target_search_memory (CORE_ADDR start_addr,
2046 ULONGEST search_space_len,
2047 const gdb_byte *pattern,
2048 ULONGEST pattern_len,
2049 CORE_ADDR *found_addrp);
2051 /* Target file operations. */
2053 /* Return nonzero if the filesystem seen by the current inferior
2054 is the local filesystem, zero otherwise. */
2055 #define target_filesystem_is_local() \
2056 current_target.to_filesystem_is_local (¤t_target)
2058 /* Open FILENAME on the target, in the filesystem as seen by INF,
2059 using FLAGS and MODE. If INF is NULL, use the filesystem seen
2060 by the debugger (GDB or, for remote targets, the remote stub).
2061 Return a target file descriptor, or -1 if an error occurs (and
2062 set *TARGET_ERRNO). */
2063 extern int target_fileio_open (struct inferior *inf,
2064 const char *filename, int flags,
2065 int mode, int *target_errno);
2067 /* Like target_fileio_open, but print a warning message if the
2068 file is being accessed over a link that may be slow. */
2069 extern int target_fileio_open_warn_if_slow (struct inferior *inf,
2070 const char *filename,
2075 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
2076 Return the number of bytes written, or -1 if an error occurs
2077 (and set *TARGET_ERRNO). */
2078 extern int target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len,
2079 ULONGEST offset, int *target_errno);
2081 /* Read up to LEN bytes FD on the target into READ_BUF.
2082 Return the number of bytes read, or -1 if an error occurs
2083 (and set *TARGET_ERRNO). */
2084 extern int target_fileio_pread (int fd, gdb_byte *read_buf, int len,
2085 ULONGEST offset, int *target_errno);
2087 /* Get information about the file opened as FD on the target
2088 and put it in SB. Return 0 on success, or -1 if an error
2089 occurs (and set *TARGET_ERRNO). */
2090 extern int target_fileio_fstat (int fd, struct stat *sb,
2093 /* Close FD on the target. Return 0, or -1 if an error occurs
2094 (and set *TARGET_ERRNO). */
2095 extern int target_fileio_close (int fd, int *target_errno);
2097 /* Unlink FILENAME on the target, in the filesystem as seen by INF.
2098 If INF is NULL, use the filesystem seen by the debugger (GDB or,
2099 for remote targets, the remote stub). Return 0, or -1 if an error
2100 occurs (and set *TARGET_ERRNO). */
2101 extern int target_fileio_unlink (struct inferior *inf,
2102 const char *filename,
2105 /* Read value of symbolic link FILENAME on the target, in the
2106 filesystem as seen by INF. If INF is NULL, use the filesystem seen
2107 by the debugger (GDB or, for remote targets, the remote stub).
2108 Return a null-terminated string allocated via xmalloc, or NULL if
2109 an error occurs (and set *TARGET_ERRNO). */
2110 extern char *target_fileio_readlink (struct inferior *inf,
2111 const char *filename,
2114 /* Read target file FILENAME, in the filesystem as seen by INF. If
2115 INF is NULL, use the filesystem seen by the debugger (GDB or, for
2116 remote targets, the remote stub). The return value will be -1 if
2117 the transfer fails or is not supported; 0 if the object is empty;
2118 or the length of the object otherwise. If a positive value is
2119 returned, a sufficiently large buffer will be allocated using
2120 xmalloc and returned in *BUF_P containing the contents of the
2123 This method should be used for objects sufficiently small to store
2124 in a single xmalloc'd buffer, when no fixed bound on the object's
2125 size is known in advance. */
2126 extern LONGEST target_fileio_read_alloc (struct inferior *inf,
2127 const char *filename,
2130 /* Read target file FILENAME, in the filesystem as seen by INF. If
2131 INF is NULL, use the filesystem seen by the debugger (GDB or, for
2132 remote targets, the remote stub). The result is NUL-terminated and
2133 returned as a string, allocated using xmalloc. If an error occurs
2134 or the transfer is unsupported, NULL is returned. Empty objects
2135 are returned as allocated but empty strings. A warning is issued
2136 if the result contains any embedded NUL bytes. */
2137 extern char *target_fileio_read_stralloc (struct inferior *inf,
2138 const char *filename);
2141 /* Tracepoint-related operations. */
2143 #define target_trace_init() \
2144 (*current_target.to_trace_init) (¤t_target)
2146 #define target_download_tracepoint(t) \
2147 (*current_target.to_download_tracepoint) (¤t_target, t)
2149 #define target_can_download_tracepoint() \
2150 (*current_target.to_can_download_tracepoint) (¤t_target)
2152 #define target_download_trace_state_variable(tsv) \
2153 (*current_target.to_download_trace_state_variable) (¤t_target, tsv)
2155 #define target_enable_tracepoint(loc) \
2156 (*current_target.to_enable_tracepoint) (¤t_target, loc)
2158 #define target_disable_tracepoint(loc) \
2159 (*current_target.to_disable_tracepoint) (¤t_target, loc)
2161 #define target_trace_start() \
2162 (*current_target.to_trace_start) (¤t_target)
2164 #define target_trace_set_readonly_regions() \
2165 (*current_target.to_trace_set_readonly_regions) (¤t_target)
2167 #define target_get_trace_status(ts) \
2168 (*current_target.to_get_trace_status) (¤t_target, ts)
2170 #define target_get_tracepoint_status(tp,utp) \
2171 (*current_target.to_get_tracepoint_status) (¤t_target, tp, utp)
2173 #define target_trace_stop() \
2174 (*current_target.to_trace_stop) (¤t_target)
2176 #define target_trace_find(type,num,addr1,addr2,tpp) \
2177 (*current_target.to_trace_find) (¤t_target, \
2178 (type), (num), (addr1), (addr2), (tpp))
2180 #define target_get_trace_state_variable_value(tsv,val) \
2181 (*current_target.to_get_trace_state_variable_value) (¤t_target, \
2184 #define target_save_trace_data(filename) \
2185 (*current_target.to_save_trace_data) (¤t_target, filename)
2187 #define target_upload_tracepoints(utpp) \
2188 (*current_target.to_upload_tracepoints) (¤t_target, utpp)
2190 #define target_upload_trace_state_variables(utsvp) \
2191 (*current_target.to_upload_trace_state_variables) (¤t_target, utsvp)
2193 #define target_get_raw_trace_data(buf,offset,len) \
2194 (*current_target.to_get_raw_trace_data) (¤t_target, \
2195 (buf), (offset), (len))
2197 #define target_get_min_fast_tracepoint_insn_len() \
2198 (*current_target.to_get_min_fast_tracepoint_insn_len) (¤t_target)
2200 #define target_set_disconnected_tracing(val) \
2201 (*current_target.to_set_disconnected_tracing) (¤t_target, val)
2203 #define target_set_circular_trace_buffer(val) \
2204 (*current_target.to_set_circular_trace_buffer) (¤t_target, val)
2206 #define target_set_trace_buffer_size(val) \
2207 (*current_target.to_set_trace_buffer_size) (¤t_target, val)
2209 #define target_set_trace_notes(user,notes,stopnotes) \
2210 (*current_target.to_set_trace_notes) (¤t_target, \
2211 (user), (notes), (stopnotes))
2213 #define target_get_tib_address(ptid, addr) \
2214 (*current_target.to_get_tib_address) (¤t_target, (ptid), (addr))
2216 #define target_set_permissions() \
2217 (*current_target.to_set_permissions) (¤t_target)
2219 #define target_static_tracepoint_marker_at(addr, marker) \
2220 (*current_target.to_static_tracepoint_marker_at) (¤t_target, \
2223 #define target_static_tracepoint_markers_by_strid(marker_id) \
2224 (*current_target.to_static_tracepoint_markers_by_strid) (¤t_target, \
2227 #define target_traceframe_info() \
2228 (*current_target.to_traceframe_info) (¤t_target)
2230 #define target_use_agent(use) \
2231 (*current_target.to_use_agent) (¤t_target, use)
2233 #define target_can_use_agent() \
2234 (*current_target.to_can_use_agent) (¤t_target)
2236 #define target_augmented_libraries_svr4_read() \
2237 (*current_target.to_augmented_libraries_svr4_read) (¤t_target)
2239 /* Command logging facility. */
2241 #define target_log_command(p) \
2242 (*current_target.to_log_command) (¤t_target, p)
2245 extern int target_core_of_thread (ptid_t ptid);
2247 /* See to_get_unwinder in struct target_ops. */
2248 extern const struct frame_unwind *target_get_unwinder (void);
2250 /* See to_get_tailcall_unwinder in struct target_ops. */
2251 extern const struct frame_unwind *target_get_tailcall_unwinder (void);
2253 /* This implements basic memory verification, reading target memory
2254 and performing the comparison here (as opposed to accelerated
2255 verification making use of the qCRC packet, for example). */
2257 extern int simple_verify_memory (struct target_ops* ops,
2258 const gdb_byte *data,
2259 CORE_ADDR memaddr, ULONGEST size);
2261 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range matches
2262 the contents of [DATA,DATA+SIZE). Returns 1 if there's a match, 0
2263 if there's a mismatch, and -1 if an error is encountered while
2264 reading memory. Throws an error if the functionality is found not
2265 to be supported by the current target. */
2266 int target_verify_memory (const gdb_byte *data,
2267 CORE_ADDR memaddr, ULONGEST size);
2269 /* Routines for maintenance of the target structures...
2271 complete_target_initialization: Finalize a target_ops by filling in
2272 any fields needed by the target implementation. Unnecessary for
2273 targets which are registered via add_target, as this part gets
2276 add_target: Add a target to the list of all possible targets.
2277 This only makes sense for targets that should be activated using
2278 the "target TARGET_NAME ..." command.
2280 push_target: Make this target the top of the stack of currently used
2281 targets, within its particular stratum of the stack. Result
2282 is 0 if now atop the stack, nonzero if not on top (maybe
2285 unpush_target: Remove this from the stack of currently used targets,
2286 no matter where it is on the list. Returns 0 if no
2287 change, 1 if removed from stack. */
2289 extern void add_target (struct target_ops *);
2291 extern void add_target_with_completer (struct target_ops *t,
2292 completer_ftype *completer);
2294 extern void complete_target_initialization (struct target_ops *t);
2296 /* Adds a command ALIAS for target T and marks it deprecated. This is useful
2297 for maintaining backwards compatibility when renaming targets. */
2299 extern void add_deprecated_target_alias (struct target_ops *t,
2302 extern void push_target (struct target_ops *);
2304 extern int unpush_target (struct target_ops *);
2306 extern void target_pre_inferior (int);
2308 extern void target_preopen (int);
2310 /* Does whatever cleanup is required to get rid of all pushed targets. */
2311 extern void pop_all_targets (void);
2313 /* Like pop_all_targets, but pops only targets whose stratum is at or
2315 extern void pop_all_targets_at_and_above (enum strata stratum);
2317 /* Like pop_all_targets, but pops only targets whose stratum is
2318 strictly above ABOVE_STRATUM. */
2319 extern void pop_all_targets_above (enum strata above_stratum);
2321 extern int target_is_pushed (struct target_ops *t);
2323 extern CORE_ADDR target_translate_tls_address (struct objfile *objfile,
2326 /* Struct target_section maps address ranges to file sections. It is
2327 mostly used with BFD files, but can be used without (e.g. for handling
2328 raw disks, or files not in formats handled by BFD). */
2330 struct target_section
2332 CORE_ADDR addr; /* Lowest address in section */
2333 CORE_ADDR endaddr; /* 1+highest address in section */
2335 struct bfd_section *the_bfd_section;
2337 /* The "owner" of the section.
2338 It can be any unique value. It is set by add_target_sections
2339 and used by remove_target_sections.
2340 For example, for executables it is a pointer to exec_bfd and
2341 for shlibs it is the so_list pointer. */
2345 /* Holds an array of target sections. Defined by [SECTIONS..SECTIONS_END[. */
2347 struct target_section_table
2349 struct target_section *sections;
2350 struct target_section *sections_end;
2353 /* Return the "section" containing the specified address. */
2354 struct target_section *target_section_by_addr (struct target_ops *target,
2357 /* Return the target section table this target (or the targets
2358 beneath) currently manipulate. */
2360 extern struct target_section_table *target_get_section_table
2361 (struct target_ops *target);
2363 /* From mem-break.c */
2365 extern int memory_remove_breakpoint (struct target_ops *, struct gdbarch *,
2366 struct bp_target_info *,
2367 enum remove_bp_reason);
2369 extern int memory_insert_breakpoint (struct target_ops *, struct gdbarch *,
2370 struct bp_target_info *);
2372 /* Check whether the memory at the breakpoint's placed address still
2373 contains the expected breakpoint instruction. */
2375 extern int memory_validate_breakpoint (struct gdbarch *gdbarch,
2376 struct bp_target_info *bp_tgt);
2378 extern int default_memory_remove_breakpoint (struct gdbarch *,
2379 struct bp_target_info *);
2381 extern int default_memory_insert_breakpoint (struct gdbarch *,
2382 struct bp_target_info *);
2387 extern void initialize_targets (void);
2389 extern void noprocess (void) ATTRIBUTE_NORETURN;
2391 extern void target_require_runnable (void);
2393 extern struct target_ops *find_target_beneath (struct target_ops *);
2395 /* Find the target at STRATUM. If no target is at that stratum,
2398 struct target_ops *find_target_at (enum strata stratum);
2400 /* Read OS data object of type TYPE from the target, and return it in
2401 XML format. The result is NUL-terminated and returned as a string,
2402 allocated using xmalloc. If an error occurs or the transfer is
2403 unsupported, NULL is returned. Empty objects are returned as
2404 allocated but empty strings. */
2406 extern char *target_get_osdata (const char *type);
2409 /* Stuff that should be shared among the various remote targets. */
2411 /* Debugging level. 0 is off, and non-zero values mean to print some debug
2412 information (higher values, more information). */
2413 extern int remote_debug;
2415 /* Speed in bits per second, or -1 which means don't mess with the speed. */
2416 extern int baud_rate;
2418 /* Parity for serial port */
2419 extern int serial_parity;
2421 /* Timeout limit for response from target. */
2422 extern int remote_timeout;
2426 /* Set the show memory breakpoints mode to show, and return a
2427 scoped_restore to restore it back to the current value. */
2428 extern scoped_restore_tmpl<int>
2429 make_scoped_restore_show_memory_breakpoints (int show);
2431 extern int may_write_registers;
2432 extern int may_write_memory;
2433 extern int may_insert_breakpoints;
2434 extern int may_insert_tracepoints;
2435 extern int may_insert_fast_tracepoints;
2436 extern int may_stop;
2438 extern void update_target_permissions (void);
2441 /* Imported from machine dependent code. */
2443 /* See to_supports_btrace in struct target_ops. */
2444 extern int target_supports_btrace (enum btrace_format);
2446 /* See to_enable_btrace in struct target_ops. */
2447 extern struct btrace_target_info *
2448 target_enable_btrace (ptid_t ptid, const struct btrace_config *);
2450 /* See to_disable_btrace in struct target_ops. */
2451 extern void target_disable_btrace (struct btrace_target_info *btinfo);
2453 /* See to_teardown_btrace in struct target_ops. */
2454 extern void target_teardown_btrace (struct btrace_target_info *btinfo);
2456 /* See to_read_btrace in struct target_ops. */
2457 extern enum btrace_error target_read_btrace (struct btrace_data *,
2458 struct btrace_target_info *,
2459 enum btrace_read_type);
2461 /* See to_btrace_conf in struct target_ops. */
2462 extern const struct btrace_config *
2463 target_btrace_conf (const struct btrace_target_info *);
2465 /* See to_stop_recording in struct target_ops. */
2466 extern void target_stop_recording (void);
2468 /* See to_save_record in struct target_ops. */
2469 extern void target_save_record (const char *filename);
2471 /* Query if the target supports deleting the execution log. */
2472 extern int target_supports_delete_record (void);
2474 /* See to_delete_record in struct target_ops. */
2475 extern void target_delete_record (void);
2477 /* See to_record_method. */
2478 extern enum record_method target_record_method (ptid_t ptid);
2480 /* See to_record_is_replaying in struct target_ops. */
2481 extern int target_record_is_replaying (ptid_t ptid);
2483 /* See to_record_will_replay in struct target_ops. */
2484 extern int target_record_will_replay (ptid_t ptid, int dir);
2486 /* See to_record_stop_replaying in struct target_ops. */
2487 extern void target_record_stop_replaying (void);
2489 /* See to_goto_record_begin in struct target_ops. */
2490 extern void target_goto_record_begin (void);
2492 /* See to_goto_record_end in struct target_ops. */
2493 extern void target_goto_record_end (void);
2495 /* See to_goto_record in struct target_ops. */
2496 extern void target_goto_record (ULONGEST insn);
2498 /* See to_insn_history. */
2499 extern void target_insn_history (int size, gdb_disassembly_flags flags);
2501 /* See to_insn_history_from. */
2502 extern void target_insn_history_from (ULONGEST from, int size,
2503 gdb_disassembly_flags flags);
2505 /* See to_insn_history_range. */
2506 extern void target_insn_history_range (ULONGEST begin, ULONGEST end,
2507 gdb_disassembly_flags flags);
2509 /* See to_call_history. */
2510 extern void target_call_history (int size, int flags);
2512 /* See to_call_history_from. */
2513 extern void target_call_history_from (ULONGEST begin, int size, int flags);
2515 /* See to_call_history_range. */
2516 extern void target_call_history_range (ULONGEST begin, ULONGEST end, int flags);
2518 /* See to_prepare_to_generate_core. */
2519 extern void target_prepare_to_generate_core (void);
2521 /* See to_done_generating_core. */
2522 extern void target_done_generating_core (void);
2524 #endif /* !defined (TARGET_H) */