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"
79 #include "tracepoint.h"
81 #include "break-common.h" /* For enum target_hw_bp_type. */
85 dummy_stratum, /* The lowest of the low */
86 file_stratum, /* Executable files, etc */
87 process_stratum, /* Executing processes or core dump files */
88 thread_stratum, /* Executing threads */
89 record_stratum, /* Support record debugging */
90 arch_stratum /* Architecture overrides */
93 enum thread_control_capabilities
95 tc_none = 0, /* Default: can't control thread execution. */
96 tc_schedlock = 1, /* Can lock the thread scheduler. */
99 /* The structure below stores information about a system call.
100 It is basically used in the "catch syscall" command, and in
101 every function that gives information about a system call.
103 It's also good to mention that its fields represent everything
104 that we currently know about a syscall in GDB. */
107 /* The syscall number. */
110 /* The syscall name. */
114 /* Return a pretty printed form of TARGET_OPTIONS.
115 Space for the result is malloc'd, caller must free. */
116 extern char *target_options_to_string (int target_options);
118 /* Possible types of events that the inferior handler will have to
120 enum inferior_event_type
122 /* Process a normal inferior event which will result in target_wait
125 /* We are called to do stuff after the inferior stops. */
129 /* Target objects which can be transfered using target_read,
130 target_write, et cetera. */
134 /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */
136 /* SPU target specific transfer. See "spu-tdep.c". */
138 /* Transfer up-to LEN bytes of memory starting at OFFSET. */
139 TARGET_OBJECT_MEMORY,
140 /* Memory, avoiding GDB's data cache and trusting the executable.
141 Target implementations of to_xfer_partial never need to handle
142 this object, and most callers should not use it. */
143 TARGET_OBJECT_RAW_MEMORY,
144 /* Memory known to be part of the target's stack. This is cached even
145 if it is not in a region marked as such, since it is known to be
147 TARGET_OBJECT_STACK_MEMORY,
148 /* Memory known to be part of the target code. This is cached even
149 if it is not in a region marked as such. */
150 TARGET_OBJECT_CODE_MEMORY,
151 /* Kernel Unwind Table. See "ia64-tdep.c". */
152 TARGET_OBJECT_UNWIND_TABLE,
153 /* Transfer auxilliary vector. */
155 /* StackGhost cookie. See "sparc-tdep.c". */
156 TARGET_OBJECT_WCOOKIE,
157 /* Target memory map in XML format. */
158 TARGET_OBJECT_MEMORY_MAP,
159 /* Flash memory. This object can be used to write contents to
160 a previously erased flash memory. Using it without erasing
161 flash can have unexpected results. Addresses are physical
162 address on target, and not relative to flash start. */
164 /* Available target-specific features, e.g. registers and coprocessors.
165 See "target-descriptions.c". ANNEX should never be empty. */
166 TARGET_OBJECT_AVAILABLE_FEATURES,
167 /* Currently loaded libraries, in XML format. */
168 TARGET_OBJECT_LIBRARIES,
169 /* Currently loaded libraries specific for SVR4 systems, in XML format. */
170 TARGET_OBJECT_LIBRARIES_SVR4,
171 /* Currently loaded libraries specific to AIX systems, in XML format. */
172 TARGET_OBJECT_LIBRARIES_AIX,
173 /* Get OS specific data. The ANNEX specifies the type (running
174 processes, etc.). The data being transfered is expected to follow
175 the DTD specified in features/osdata.dtd. */
176 TARGET_OBJECT_OSDATA,
177 /* Extra signal info. Usually the contents of `siginfo_t' on unix
179 TARGET_OBJECT_SIGNAL_INFO,
180 /* The list of threads that are being debugged. */
181 TARGET_OBJECT_THREADS,
182 /* Collected static trace data. */
183 TARGET_OBJECT_STATIC_TRACE_DATA,
184 /* The HP-UX registers (those that can be obtained or modified by using
185 the TT_LWP_RUREGS/TT_LWP_WUREGS ttrace requests). */
186 TARGET_OBJECT_HPUX_UREGS,
187 /* The HP-UX shared library linkage pointer. ANNEX should be a string
188 image of the code address whose linkage pointer we are looking for.
190 The size of the data transfered is always 8 bytes (the size of an
192 TARGET_OBJECT_HPUX_SOLIB_GOT,
193 /* Traceframe info, in XML format. */
194 TARGET_OBJECT_TRACEFRAME_INFO,
195 /* Load maps for FDPIC systems. */
197 /* Darwin dynamic linker info data. */
198 TARGET_OBJECT_DARWIN_DYLD_INFO,
199 /* OpenVMS Unwind Information Block. */
200 TARGET_OBJECT_OPENVMS_UIB,
201 /* Branch trace data, in XML format. */
202 TARGET_OBJECT_BTRACE,
203 /* Branch trace configuration, in XML format. */
204 TARGET_OBJECT_BTRACE_CONF,
205 /* The pathname of the executable file that was run to create
206 a specified process. ANNEX should be a string representation
207 of the process ID of the process in question, in hexadecimal
209 TARGET_OBJECT_EXEC_FILE,
210 /* Possible future objects: TARGET_OBJECT_FILE, ... */
213 /* Possible values returned by target_xfer_partial, etc. */
215 enum target_xfer_status
217 /* Some bytes are transferred. */
220 /* No further transfer is possible. */
223 /* The piece of the object requested is unavailable. */
224 TARGET_XFER_UNAVAILABLE = 2,
226 /* Generic I/O error. Note that it's important that this is '-1',
227 as we still have target_xfer-related code returning hardcoded
229 TARGET_XFER_E_IO = -1,
231 /* Keep list in sync with target_xfer_status_to_string. */
234 /* Return the string form of STATUS. */
237 target_xfer_status_to_string (enum target_xfer_status status);
239 typedef struct static_tracepoint_marker *static_tracepoint_marker_p;
240 DEF_VEC_P(static_tracepoint_marker_p);
242 typedef enum target_xfer_status
243 target_xfer_partial_ftype (struct target_ops *ops,
244 enum target_object object,
247 const gdb_byte *writebuf,
250 ULONGEST *xfered_len);
252 enum target_xfer_status
253 raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf,
254 const gdb_byte *writebuf, ULONGEST memaddr,
255 LONGEST len, ULONGEST *xfered_len);
257 /* Request that OPS transfer up to LEN addressable units of the target's
258 OBJECT. When reading from a memory object, the size of an addressable unit
259 is architecture dependent and can be found using
260 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is 1
261 byte long. BUF should point to a buffer large enough to hold the read data,
262 taking into account the addressable unit size. The OFFSET, for a seekable
263 object, specifies the starting point. The ANNEX can be used to provide
264 additional data-specific information to the target.
266 Return the number of addressable units actually transferred, or a negative
267 error code (an 'enum target_xfer_error' value) if the transfer is not
268 supported or otherwise fails. Return of a positive value less than
269 LEN indicates that no further transfer is possible. Unlike the raw
270 to_xfer_partial interface, callers of these functions do not need
271 to retry partial transfers. */
273 extern LONGEST target_read (struct target_ops *ops,
274 enum target_object object,
275 const char *annex, gdb_byte *buf,
276 ULONGEST offset, LONGEST len);
278 struct memory_read_result
280 memory_read_result (ULONGEST begin_, ULONGEST end_,
281 gdb::unique_xmalloc_ptr<gdb_byte> &&data_)
284 data (std::move (data_))
288 ~memory_read_result () = default;
290 memory_read_result (memory_read_result &&other) = default;
292 DISABLE_COPY_AND_ASSIGN (memory_read_result);
294 /* First address that was read. */
296 /* Past-the-end address. */
299 gdb::unique_xmalloc_ptr<gdb_byte> data;
302 extern std::vector<memory_read_result> read_memory_robust
303 (struct target_ops *ops, const ULONGEST offset, const LONGEST len);
305 /* Request that OPS transfer up to LEN addressable units from BUF to the
306 target's OBJECT. When writing to a memory object, the addressable unit
307 size is architecture dependent and can be found using
308 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is 1
309 byte long. The OFFSET, for a seekable object, specifies the starting point.
310 The ANNEX can be used to provide additional data-specific information to
313 Return the number of addressable units actually transferred, or a negative
314 error code (an 'enum target_xfer_status' value) if the transfer is not
315 supported or otherwise fails. Return of a positive value less than
316 LEN indicates that no further transfer is possible. Unlike the raw
317 to_xfer_partial interface, callers of these functions do not need to
318 retry partial transfers. */
320 extern LONGEST target_write (struct target_ops *ops,
321 enum target_object object,
322 const char *annex, const gdb_byte *buf,
323 ULONGEST offset, LONGEST len);
325 /* Similar to target_write, except that it also calls PROGRESS with
326 the number of bytes written and the opaque BATON after every
327 successful partial write (and before the first write). This is
328 useful for progress reporting and user interaction while writing
329 data. To abort the transfer, the progress callback can throw an
332 LONGEST target_write_with_progress (struct target_ops *ops,
333 enum target_object object,
334 const char *annex, const gdb_byte *buf,
335 ULONGEST offset, LONGEST len,
336 void (*progress) (ULONGEST, void *),
339 /* Wrapper to perform a full read of unknown size. OBJECT/ANNEX will
340 be read using OPS. The return value will be -1 if the transfer
341 fails or is not supported; 0 if the object is empty; or the length
342 of the object otherwise. If a positive value is returned, a
343 sufficiently large buffer will be allocated using xmalloc and
344 returned in *BUF_P containing the contents of the object.
346 This method should be used for objects sufficiently small to store
347 in a single xmalloc'd buffer, when no fixed bound on the object's
348 size is known in advance. Don't try to read TARGET_OBJECT_MEMORY
349 through this function. */
351 extern LONGEST target_read_alloc (struct target_ops *ops,
352 enum target_object object,
353 const char *annex, gdb_byte **buf_p);
355 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
356 returned as a string. If an error occurs or the transfer is
357 unsupported, NULL is returned. Empty objects are returned as
358 allocated but empty strings. A warning is issued if the result
359 contains any embedded NUL bytes. */
361 extern gdb::unique_xmalloc_ptr<char> target_read_stralloc
362 (struct target_ops *ops, enum target_object object, const char *annex);
364 /* See target_ops->to_xfer_partial. */
365 extern target_xfer_partial_ftype target_xfer_partial;
367 /* Wrappers to target read/write that perform memory transfers. They
368 throw an error if the memory transfer fails.
370 NOTE: cagney/2003-10-23: The naming schema is lifted from
371 "frame.h". The parameter order is lifted from get_frame_memory,
372 which in turn lifted it from read_memory. */
374 extern void get_target_memory (struct target_ops *ops, CORE_ADDR addr,
375 gdb_byte *buf, LONGEST len);
376 extern ULONGEST get_target_memory_unsigned (struct target_ops *ops,
377 CORE_ADDR addr, int len,
378 enum bfd_endian byte_order);
380 struct thread_info; /* fwd decl for parameter list below: */
382 /* The type of the callback to the to_async method. */
384 typedef void async_callback_ftype (enum inferior_event_type event_type,
387 /* Normally target debug printing is purely type-based. However,
388 sometimes it is necessary to override the debug printing on a
389 per-argument basis. This macro can be used, attribute-style, to
390 name the target debug printing function for a particular method
391 argument. FUNC is the name of the function. The macro's
392 definition is empty because it is only used by the
393 make-target-delegates script. */
395 #define TARGET_DEBUG_PRINTER(FUNC)
397 /* These defines are used to mark target_ops methods. The script
398 make-target-delegates scans these and auto-generates the base
399 method implementations. There are four macros that can be used:
401 1. TARGET_DEFAULT_IGNORE. There is no argument. The base method
402 does nothing. This is only valid if the method return type is
405 2. TARGET_DEFAULT_NORETURN. The argument is a function call, like
406 'tcomplain ()'. The base method simply makes this call, which is
407 assumed not to return.
409 3. TARGET_DEFAULT_RETURN. The argument is a C expression. The
410 base method returns this expression's value.
412 4. TARGET_DEFAULT_FUNC. The argument is the name of a function.
413 make-target-delegates does not generate a base method in this case,
414 but instead uses the argument function as the base method. */
416 #define TARGET_DEFAULT_IGNORE()
417 #define TARGET_DEFAULT_NORETURN(ARG)
418 #define TARGET_DEFAULT_RETURN(ARG)
419 #define TARGET_DEFAULT_FUNC(ARG)
421 /* Define a typedef, because make-target-delegates doesn't currently handle type
422 names with templates. */
424 typedef std::vector<mem_region> mem_region_vector;
428 struct target_ops *beneath; /* To the target under this one. */
429 const char *to_shortname; /* Name this target type */
430 const char *to_longname; /* Name for printing */
431 const char *to_doc; /* Documentation. Does not include trailing
432 newline, and starts with a one-line descrip-
433 tion (probably similar to to_longname). */
434 /* Per-target scratch pad. */
436 /* The open routine takes the rest of the parameters from the
437 command, and (if successful) pushes a new target onto the
438 stack. Targets should supply this routine, if only to provide
440 void (*to_open) (const char *, int);
441 /* Old targets with a static target vector provide "to_close".
442 New re-entrant targets provide "to_xclose" and that is expected
443 to xfree everything (including the "struct target_ops"). */
444 void (*to_xclose) (struct target_ops *targ);
445 void (*to_close) (struct target_ops *);
446 /* Attaches to a process on the target side. Arguments are as
447 passed to the `attach' command by the user. This routine can
448 be called when the target is not on the target-stack, if the
449 target_can_run routine returns 1; in that case, it must push
450 itself onto the stack. Upon exit, the target should be ready
451 for normal operations, and should be ready to deliver the
452 status of the process immediately (without waiting) to an
453 upcoming target_wait call. */
454 void (*to_attach) (struct target_ops *ops, const char *, int);
455 void (*to_post_attach) (struct target_ops *, int)
456 TARGET_DEFAULT_IGNORE ();
457 void (*to_detach) (struct target_ops *ops, const char *, int)
458 TARGET_DEFAULT_IGNORE ();
459 void (*to_disconnect) (struct target_ops *, const char *, int)
460 TARGET_DEFAULT_NORETURN (tcomplain ());
461 void (*to_resume) (struct target_ops *, ptid_t,
462 int TARGET_DEBUG_PRINTER (target_debug_print_step),
464 TARGET_DEFAULT_NORETURN (noprocess ());
465 void (*to_commit_resume) (struct target_ops *)
466 TARGET_DEFAULT_IGNORE ();
467 ptid_t (*to_wait) (struct target_ops *,
468 ptid_t, struct target_waitstatus *,
469 int TARGET_DEBUG_PRINTER (target_debug_print_options))
470 TARGET_DEFAULT_FUNC (default_target_wait);
471 void (*to_fetch_registers) (struct target_ops *, struct regcache *, int)
472 TARGET_DEFAULT_IGNORE ();
473 void (*to_store_registers) (struct target_ops *, struct regcache *, int)
474 TARGET_DEFAULT_NORETURN (noprocess ());
475 void (*to_prepare_to_store) (struct target_ops *, struct regcache *)
476 TARGET_DEFAULT_NORETURN (noprocess ());
478 void (*to_files_info) (struct target_ops *)
479 TARGET_DEFAULT_IGNORE ();
480 int (*to_insert_breakpoint) (struct target_ops *, struct gdbarch *,
481 struct bp_target_info *)
482 TARGET_DEFAULT_FUNC (memory_insert_breakpoint);
483 int (*to_remove_breakpoint) (struct target_ops *, struct gdbarch *,
484 struct bp_target_info *,
485 enum remove_bp_reason)
486 TARGET_DEFAULT_FUNC (memory_remove_breakpoint);
488 /* Returns true if the target stopped because it executed a
489 software breakpoint. This is necessary for correct background
490 execution / non-stop mode operation, and for correct PC
491 adjustment on targets where the PC needs to be adjusted when a
492 software breakpoint triggers. In these modes, by the time GDB
493 processes a breakpoint event, the breakpoint may already be
494 done from the target, so GDB needs to be able to tell whether
495 it should ignore the event and whether it should adjust the PC.
496 See adjust_pc_after_break. */
497 int (*to_stopped_by_sw_breakpoint) (struct target_ops *)
498 TARGET_DEFAULT_RETURN (0);
499 /* Returns true if the above method is supported. */
500 int (*to_supports_stopped_by_sw_breakpoint) (struct target_ops *)
501 TARGET_DEFAULT_RETURN (0);
503 /* Returns true if the target stopped for a hardware breakpoint.
504 Likewise, if the target supports hardware breakpoints, this
505 method is necessary for correct background execution / non-stop
506 mode operation. Even though hardware breakpoints do not
507 require PC adjustment, GDB needs to be able to tell whether the
508 hardware breakpoint event is a delayed event for a breakpoint
509 that is already gone and should thus be ignored. */
510 int (*to_stopped_by_hw_breakpoint) (struct target_ops *)
511 TARGET_DEFAULT_RETURN (0);
512 /* Returns true if the above method is supported. */
513 int (*to_supports_stopped_by_hw_breakpoint) (struct target_ops *)
514 TARGET_DEFAULT_RETURN (0);
516 int (*to_can_use_hw_breakpoint) (struct target_ops *,
517 enum bptype, int, int)
518 TARGET_DEFAULT_RETURN (0);
519 int (*to_ranged_break_num_registers) (struct target_ops *)
520 TARGET_DEFAULT_RETURN (-1);
521 int (*to_insert_hw_breakpoint) (struct target_ops *,
522 struct gdbarch *, struct bp_target_info *)
523 TARGET_DEFAULT_RETURN (-1);
524 int (*to_remove_hw_breakpoint) (struct target_ops *,
525 struct gdbarch *, struct bp_target_info *)
526 TARGET_DEFAULT_RETURN (-1);
528 /* Documentation of what the two routines below are expected to do is
529 provided with the corresponding target_* macros. */
530 int (*to_remove_watchpoint) (struct target_ops *, CORE_ADDR, int,
531 enum target_hw_bp_type, struct expression *)
532 TARGET_DEFAULT_RETURN (-1);
533 int (*to_insert_watchpoint) (struct target_ops *, CORE_ADDR, int,
534 enum target_hw_bp_type, struct expression *)
535 TARGET_DEFAULT_RETURN (-1);
537 int (*to_insert_mask_watchpoint) (struct target_ops *,
538 CORE_ADDR, CORE_ADDR,
539 enum target_hw_bp_type)
540 TARGET_DEFAULT_RETURN (1);
541 int (*to_remove_mask_watchpoint) (struct target_ops *,
542 CORE_ADDR, CORE_ADDR,
543 enum target_hw_bp_type)
544 TARGET_DEFAULT_RETURN (1);
545 int (*to_stopped_by_watchpoint) (struct target_ops *)
546 TARGET_DEFAULT_RETURN (0);
547 int to_have_steppable_watchpoint;
548 int to_have_continuable_watchpoint;
549 int (*to_stopped_data_address) (struct target_ops *, CORE_ADDR *)
550 TARGET_DEFAULT_RETURN (0);
551 int (*to_watchpoint_addr_within_range) (struct target_ops *,
552 CORE_ADDR, CORE_ADDR, int)
553 TARGET_DEFAULT_FUNC (default_watchpoint_addr_within_range);
555 /* Documentation of this routine is provided with the corresponding
557 int (*to_region_ok_for_hw_watchpoint) (struct target_ops *,
559 TARGET_DEFAULT_FUNC (default_region_ok_for_hw_watchpoint);
561 int (*to_can_accel_watchpoint_condition) (struct target_ops *,
564 TARGET_DEFAULT_RETURN (0);
565 int (*to_masked_watch_num_registers) (struct target_ops *,
566 CORE_ADDR, CORE_ADDR)
567 TARGET_DEFAULT_RETURN (-1);
569 /* Return 1 for sure target can do single step. Return -1 for
570 unknown. Return 0 for target can't do. */
571 int (*to_can_do_single_step) (struct target_ops *)
572 TARGET_DEFAULT_RETURN (-1);
574 void (*to_terminal_init) (struct target_ops *)
575 TARGET_DEFAULT_IGNORE ();
576 void (*to_terminal_inferior) (struct target_ops *)
577 TARGET_DEFAULT_IGNORE ();
578 void (*to_terminal_ours_for_output) (struct target_ops *)
579 TARGET_DEFAULT_IGNORE ();
580 void (*to_terminal_ours) (struct target_ops *)
581 TARGET_DEFAULT_IGNORE ();
582 void (*to_terminal_info) (struct target_ops *, const char *, int)
583 TARGET_DEFAULT_FUNC (default_terminal_info);
584 void (*to_kill) (struct target_ops *)
585 TARGET_DEFAULT_NORETURN (noprocess ());
586 void (*to_load) (struct target_ops *, const char *, int)
587 TARGET_DEFAULT_NORETURN (tcomplain ());
588 /* Start an inferior process and set inferior_ptid to its pid.
589 EXEC_FILE is the file to run.
590 ALLARGS is a string containing the arguments to the program.
591 ENV is the environment vector to pass. Errors reported with error().
592 On VxWorks and various standalone systems, we ignore exec_file. */
593 void (*to_create_inferior) (struct target_ops *,
594 const char *, const std::string &,
596 void (*to_post_startup_inferior) (struct target_ops *, ptid_t)
597 TARGET_DEFAULT_IGNORE ();
598 int (*to_insert_fork_catchpoint) (struct target_ops *, int)
599 TARGET_DEFAULT_RETURN (1);
600 int (*to_remove_fork_catchpoint) (struct target_ops *, int)
601 TARGET_DEFAULT_RETURN (1);
602 int (*to_insert_vfork_catchpoint) (struct target_ops *, int)
603 TARGET_DEFAULT_RETURN (1);
604 int (*to_remove_vfork_catchpoint) (struct target_ops *, int)
605 TARGET_DEFAULT_RETURN (1);
606 int (*to_follow_fork) (struct target_ops *, int, int)
607 TARGET_DEFAULT_FUNC (default_follow_fork);
608 int (*to_insert_exec_catchpoint) (struct target_ops *, int)
609 TARGET_DEFAULT_RETURN (1);
610 int (*to_remove_exec_catchpoint) (struct target_ops *, int)
611 TARGET_DEFAULT_RETURN (1);
612 void (*to_follow_exec) (struct target_ops *, struct inferior *, char *)
613 TARGET_DEFAULT_IGNORE ();
614 int (*to_set_syscall_catchpoint) (struct target_ops *,
615 int, int, int, int, int *)
616 TARGET_DEFAULT_RETURN (1);
617 int (*to_has_exited) (struct target_ops *, int, int, int *)
618 TARGET_DEFAULT_RETURN (0);
619 void (*to_mourn_inferior) (struct target_ops *)
620 TARGET_DEFAULT_FUNC (default_mourn_inferior);
621 /* Note that to_can_run is special and can be invoked on an
622 unpushed target. Targets defining this method must also define
623 to_can_async_p and to_supports_non_stop. */
624 int (*to_can_run) (struct target_ops *)
625 TARGET_DEFAULT_RETURN (0);
627 /* Documentation of this routine is provided with the corresponding
629 void (*to_pass_signals) (struct target_ops *, int,
630 unsigned char * TARGET_DEBUG_PRINTER (target_debug_print_signals))
631 TARGET_DEFAULT_IGNORE ();
633 /* Documentation of this routine is provided with the
634 corresponding target_* function. */
635 void (*to_program_signals) (struct target_ops *, int,
636 unsigned char * TARGET_DEBUG_PRINTER (target_debug_print_signals))
637 TARGET_DEFAULT_IGNORE ();
639 int (*to_thread_alive) (struct target_ops *, ptid_t ptid)
640 TARGET_DEFAULT_RETURN (0);
641 void (*to_update_thread_list) (struct target_ops *)
642 TARGET_DEFAULT_IGNORE ();
643 const char *(*to_pid_to_str) (struct target_ops *, ptid_t)
644 TARGET_DEFAULT_FUNC (default_pid_to_str);
645 const char *(*to_extra_thread_info) (struct target_ops *, struct thread_info *)
646 TARGET_DEFAULT_RETURN (NULL);
647 const char *(*to_thread_name) (struct target_ops *, struct thread_info *)
648 TARGET_DEFAULT_RETURN (NULL);
649 struct thread_info *(*to_thread_handle_to_thread_info) (struct target_ops *,
652 struct inferior *inf)
653 TARGET_DEFAULT_RETURN (NULL);
654 void (*to_stop) (struct target_ops *, ptid_t)
655 TARGET_DEFAULT_IGNORE ();
656 void (*to_interrupt) (struct target_ops *, ptid_t)
657 TARGET_DEFAULT_IGNORE ();
658 void (*to_pass_ctrlc) (struct target_ops *)
659 TARGET_DEFAULT_FUNC (default_target_pass_ctrlc);
660 void (*to_rcmd) (struct target_ops *,
661 const char *command, struct ui_file *output)
662 TARGET_DEFAULT_FUNC (default_rcmd);
663 char *(*to_pid_to_exec_file) (struct target_ops *, int pid)
664 TARGET_DEFAULT_RETURN (NULL);
665 void (*to_log_command) (struct target_ops *, const char *)
666 TARGET_DEFAULT_IGNORE ();
667 struct target_section_table *(*to_get_section_table) (struct target_ops *)
668 TARGET_DEFAULT_RETURN (NULL);
669 enum strata to_stratum;
670 int (*to_has_all_memory) (struct target_ops *);
671 int (*to_has_memory) (struct target_ops *);
672 int (*to_has_stack) (struct target_ops *);
673 int (*to_has_registers) (struct target_ops *);
674 int (*to_has_execution) (struct target_ops *, ptid_t);
675 int to_has_thread_control; /* control thread execution */
676 int to_attach_no_wait;
677 /* This method must be implemented in some situations. See the
678 comment on 'to_can_run'. */
679 int (*to_can_async_p) (struct target_ops *)
680 TARGET_DEFAULT_RETURN (0);
681 int (*to_is_async_p) (struct target_ops *)
682 TARGET_DEFAULT_RETURN (0);
683 void (*to_async) (struct target_ops *, int)
684 TARGET_DEFAULT_NORETURN (tcomplain ());
685 void (*to_thread_events) (struct target_ops *, int)
686 TARGET_DEFAULT_IGNORE ();
687 /* This method must be implemented in some situations. See the
688 comment on 'to_can_run'. */
689 int (*to_supports_non_stop) (struct target_ops *)
690 TARGET_DEFAULT_RETURN (0);
691 /* Return true if the target operates in non-stop mode even with
692 "set non-stop off". */
693 int (*to_always_non_stop_p) (struct target_ops *)
694 TARGET_DEFAULT_RETURN (0);
695 /* find_memory_regions support method for gcore */
696 int (*to_find_memory_regions) (struct target_ops *,
697 find_memory_region_ftype func, void *data)
698 TARGET_DEFAULT_FUNC (dummy_find_memory_regions);
699 /* make_corefile_notes support method for gcore */
700 char * (*to_make_corefile_notes) (struct target_ops *, bfd *, int *)
701 TARGET_DEFAULT_FUNC (dummy_make_corefile_notes);
702 /* get_bookmark support method for bookmarks */
703 gdb_byte * (*to_get_bookmark) (struct target_ops *, const char *, int)
704 TARGET_DEFAULT_NORETURN (tcomplain ());
705 /* goto_bookmark support method for bookmarks */
706 void (*to_goto_bookmark) (struct target_ops *, const gdb_byte *, int)
707 TARGET_DEFAULT_NORETURN (tcomplain ());
708 /* Return the thread-local address at OFFSET in the
709 thread-local storage for the thread PTID and the shared library
710 or executable file given by OBJFILE. If that block of
711 thread-local storage hasn't been allocated yet, this function
712 may return an error. LOAD_MODULE_ADDR may be zero for statically
713 linked multithreaded inferiors. */
714 CORE_ADDR (*to_get_thread_local_address) (struct target_ops *ops,
716 CORE_ADDR load_module_addr,
718 TARGET_DEFAULT_NORETURN (generic_tls_error ());
720 /* Request that OPS transfer up to LEN addressable units of the target's
721 OBJECT. When reading from a memory object, the size of an addressable
722 unit is architecture dependent and can be found using
723 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is
724 1 byte long. The OFFSET, for a seekable object, specifies the
725 starting point. The ANNEX can be used to provide additional
726 data-specific information to the target.
728 Return the transferred status, error or OK (an
729 'enum target_xfer_status' value). Save the number of addressable units
730 actually transferred in *XFERED_LEN if transfer is successful
731 (TARGET_XFER_OK) or the number unavailable units if the requested
732 data is unavailable (TARGET_XFER_UNAVAILABLE). *XFERED_LEN
733 smaller than LEN does not indicate the end of the object, only
734 the end of the transfer; higher level code should continue
735 transferring if desired. This is handled in target.c.
737 The interface does not support a "retry" mechanism. Instead it
738 assumes that at least one addressable unit will be transfered on each
741 NOTE: cagney/2003-10-17: The current interface can lead to
742 fragmented transfers. Lower target levels should not implement
743 hacks, such as enlarging the transfer, in an attempt to
744 compensate for this. Instead, the target stack should be
745 extended so that it implements supply/collect methods and a
746 look-aside object cache. With that available, the lowest
747 target can safely and freely "push" data up the stack.
749 See target_read and target_write for more information. One,
750 and only one, of readbuf or writebuf must be non-NULL. */
752 enum target_xfer_status (*to_xfer_partial) (struct target_ops *ops,
753 enum target_object object,
756 const gdb_byte *writebuf,
757 ULONGEST offset, ULONGEST len,
758 ULONGEST *xfered_len)
759 TARGET_DEFAULT_RETURN (TARGET_XFER_E_IO);
761 /* Return the limit on the size of any single memory transfer
764 ULONGEST (*to_get_memory_xfer_limit) (struct target_ops *)
765 TARGET_DEFAULT_RETURN (ULONGEST_MAX);
767 /* Returns the memory map for the target. A return value of NULL
768 means that no memory map is available. If a memory address
769 does not fall within any returned regions, it's assumed to be
770 RAM. The returned memory regions should not overlap.
772 The order of regions does not matter; target_memory_map will
773 sort regions by starting address. For that reason, this
774 function should not be called directly except via
777 This method should not cache data; if the memory map could
778 change unexpectedly, it should be invalidated, and higher
779 layers will re-fetch it. */
780 mem_region_vector (*to_memory_map) (struct target_ops *)
781 TARGET_DEFAULT_RETURN (std::vector<mem_region> ());
783 /* Erases the region of flash memory starting at ADDRESS, of
786 Precondition: both ADDRESS and ADDRESS+LENGTH should be aligned
787 on flash block boundaries, as reported by 'to_memory_map'. */
788 void (*to_flash_erase) (struct target_ops *,
789 ULONGEST address, LONGEST length)
790 TARGET_DEFAULT_NORETURN (tcomplain ());
792 /* Finishes a flash memory write sequence. After this operation
793 all flash memory should be available for writing and the result
794 of reading from areas written by 'to_flash_write' should be
795 equal to what was written. */
796 void (*to_flash_done) (struct target_ops *)
797 TARGET_DEFAULT_NORETURN (tcomplain ());
799 /* Describe the architecture-specific features of this target. If
800 OPS doesn't have a description, this should delegate to the
801 "beneath" target. Returns the description found, or NULL if no
802 description was available. */
803 const struct target_desc *(*to_read_description) (struct target_ops *ops)
804 TARGET_DEFAULT_RETURN (NULL);
806 /* Build the PTID of the thread on which a given task is running,
807 based on LWP and THREAD. These values are extracted from the
808 task Private_Data section of the Ada Task Control Block, and
809 their interpretation depends on the target. */
810 ptid_t (*to_get_ada_task_ptid) (struct target_ops *,
811 long lwp, long thread)
812 TARGET_DEFAULT_FUNC (default_get_ada_task_ptid);
814 /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
815 Return 0 if *READPTR is already at the end of the buffer.
816 Return -1 if there is insufficient buffer for a whole entry.
817 Return 1 if an entry was read into *TYPEP and *VALP. */
818 int (*to_auxv_parse) (struct target_ops *ops, gdb_byte **readptr,
819 gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp)
820 TARGET_DEFAULT_FUNC (default_auxv_parse);
822 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
823 sequence of bytes in PATTERN with length PATTERN_LEN.
825 The result is 1 if found, 0 if not found, and -1 if there was an error
826 requiring halting of the search (e.g. memory read error).
827 If the pattern is found the address is recorded in FOUND_ADDRP. */
828 int (*to_search_memory) (struct target_ops *ops,
829 CORE_ADDR start_addr, ULONGEST search_space_len,
830 const gdb_byte *pattern, ULONGEST pattern_len,
831 CORE_ADDR *found_addrp)
832 TARGET_DEFAULT_FUNC (default_search_memory);
834 /* Can target execute in reverse? */
835 int (*to_can_execute_reverse) (struct target_ops *)
836 TARGET_DEFAULT_RETURN (0);
838 /* The direction the target is currently executing. Must be
839 implemented on targets that support reverse execution and async
840 mode. The default simply returns forward execution. */
841 enum exec_direction_kind (*to_execution_direction) (struct target_ops *)
842 TARGET_DEFAULT_FUNC (default_execution_direction);
844 /* Does this target support debugging multiple processes
846 int (*to_supports_multi_process) (struct target_ops *)
847 TARGET_DEFAULT_RETURN (0);
849 /* Does this target support enabling and disabling tracepoints while a trace
850 experiment is running? */
851 int (*to_supports_enable_disable_tracepoint) (struct target_ops *)
852 TARGET_DEFAULT_RETURN (0);
854 /* Does this target support disabling address space randomization? */
855 int (*to_supports_disable_randomization) (struct target_ops *);
857 /* Does this target support the tracenz bytecode for string collection? */
858 int (*to_supports_string_tracing) (struct target_ops *)
859 TARGET_DEFAULT_RETURN (0);
861 /* Does this target support evaluation of breakpoint conditions on its
863 int (*to_supports_evaluation_of_breakpoint_conditions) (struct target_ops *)
864 TARGET_DEFAULT_RETURN (0);
866 /* Does this target support evaluation of breakpoint commands on its
868 int (*to_can_run_breakpoint_commands) (struct target_ops *)
869 TARGET_DEFAULT_RETURN (0);
871 /* Determine current architecture of thread PTID.
873 The target is supposed to determine the architecture of the code where
874 the target is currently stopped at (on Cell, if a target is in spu_run,
875 to_thread_architecture would return SPU, otherwise PPC32 or PPC64).
876 This is architecture used to perform decr_pc_after_break adjustment,
877 and also determines the frame architecture of the innermost frame.
878 ptrace operations need to operate according to target_gdbarch ().
880 The default implementation always returns target_gdbarch (). */
881 struct gdbarch *(*to_thread_architecture) (struct target_ops *, ptid_t)
882 TARGET_DEFAULT_FUNC (default_thread_architecture);
884 /* Determine current address space of thread PTID.
886 The default implementation always returns the inferior's
888 struct address_space *(*to_thread_address_space) (struct target_ops *,
890 TARGET_DEFAULT_FUNC (default_thread_address_space);
892 /* Target file operations. */
894 /* Return nonzero if the filesystem seen by the current inferior
895 is the local filesystem, zero otherwise. */
896 int (*to_filesystem_is_local) (struct target_ops *)
897 TARGET_DEFAULT_RETURN (1);
899 /* Open FILENAME on the target, in the filesystem as seen by INF,
900 using FLAGS and MODE. If INF is NULL, use the filesystem seen
901 by the debugger (GDB or, for remote targets, the remote stub).
902 If WARN_IF_SLOW is nonzero, print a warning message if the file
903 is being accessed over a link that may be slow. Return a
904 target file descriptor, or -1 if an error occurs (and set
906 int (*to_fileio_open) (struct target_ops *,
907 struct inferior *inf, const char *filename,
908 int flags, int mode, int warn_if_slow,
911 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
912 Return the number of bytes written, or -1 if an error occurs
913 (and set *TARGET_ERRNO). */
914 int (*to_fileio_pwrite) (struct target_ops *,
915 int fd, const gdb_byte *write_buf, int len,
916 ULONGEST offset, int *target_errno);
918 /* Read up to LEN bytes FD on the target into READ_BUF.
919 Return the number of bytes read, or -1 if an error occurs
920 (and set *TARGET_ERRNO). */
921 int (*to_fileio_pread) (struct target_ops *,
922 int fd, gdb_byte *read_buf, int len,
923 ULONGEST offset, int *target_errno);
925 /* Get information about the file opened as FD and put it in
926 SB. Return 0 on success, or -1 if an error occurs (and set
928 int (*to_fileio_fstat) (struct target_ops *,
929 int fd, struct stat *sb, int *target_errno);
931 /* Close FD on the target. Return 0, or -1 if an error occurs
932 (and set *TARGET_ERRNO). */
933 int (*to_fileio_close) (struct target_ops *, int fd, int *target_errno);
935 /* Unlink FILENAME on the target, in the filesystem as seen by
936 INF. If INF is NULL, use the filesystem seen by the debugger
937 (GDB or, for remote targets, the remote stub). Return 0, or
938 -1 if an error occurs (and set *TARGET_ERRNO). */
939 int (*to_fileio_unlink) (struct target_ops *,
940 struct inferior *inf,
941 const char *filename,
944 /* Read value of symbolic link FILENAME on the target, in the
945 filesystem as seen by INF. If INF is NULL, use the filesystem
946 seen by the debugger (GDB or, for remote targets, the remote
947 stub). Return a null-terminated string allocated via xmalloc,
948 or NULL if an error occurs (and set *TARGET_ERRNO). */
949 char *(*to_fileio_readlink) (struct target_ops *,
950 struct inferior *inf,
951 const char *filename,
955 /* Implement the "info proc" command. */
956 void (*to_info_proc) (struct target_ops *, const char *,
957 enum info_proc_what);
959 /* Tracepoint-related operations. */
961 /* Prepare the target for a tracing run. */
962 void (*to_trace_init) (struct target_ops *)
963 TARGET_DEFAULT_NORETURN (tcomplain ());
965 /* Send full details of a tracepoint location to the target. */
966 void (*to_download_tracepoint) (struct target_ops *,
967 struct bp_location *location)
968 TARGET_DEFAULT_NORETURN (tcomplain ());
970 /* Is the target able to download tracepoint locations in current
972 int (*to_can_download_tracepoint) (struct target_ops *)
973 TARGET_DEFAULT_RETURN (0);
975 /* Send full details of a trace state variable to the target. */
976 void (*to_download_trace_state_variable) (struct target_ops *,
977 struct trace_state_variable *tsv)
978 TARGET_DEFAULT_NORETURN (tcomplain ());
980 /* Enable a tracepoint on the target. */
981 void (*to_enable_tracepoint) (struct target_ops *,
982 struct bp_location *location)
983 TARGET_DEFAULT_NORETURN (tcomplain ());
985 /* Disable a tracepoint on the target. */
986 void (*to_disable_tracepoint) (struct target_ops *,
987 struct bp_location *location)
988 TARGET_DEFAULT_NORETURN (tcomplain ());
990 /* Inform the target info of memory regions that are readonly
991 (such as text sections), and so it should return data from
992 those rather than look in the trace buffer. */
993 void (*to_trace_set_readonly_regions) (struct target_ops *)
994 TARGET_DEFAULT_NORETURN (tcomplain ());
996 /* Start a trace run. */
997 void (*to_trace_start) (struct target_ops *)
998 TARGET_DEFAULT_NORETURN (tcomplain ());
1000 /* Get the current status of a tracing run. */
1001 int (*to_get_trace_status) (struct target_ops *, struct trace_status *ts)
1002 TARGET_DEFAULT_RETURN (-1);
1004 void (*to_get_tracepoint_status) (struct target_ops *,
1005 struct breakpoint *tp,
1006 struct uploaded_tp *utp)
1007 TARGET_DEFAULT_NORETURN (tcomplain ());
1009 /* Stop a trace run. */
1010 void (*to_trace_stop) (struct target_ops *)
1011 TARGET_DEFAULT_NORETURN (tcomplain ());
1013 /* Ask the target to find a trace frame of the given type TYPE,
1014 using NUM, ADDR1, and ADDR2 as search parameters. Returns the
1015 number of the trace frame, and also the tracepoint number at
1016 TPP. If no trace frame matches, return -1. May throw if the
1018 int (*to_trace_find) (struct target_ops *,
1019 enum trace_find_type type, int num,
1020 CORE_ADDR addr1, CORE_ADDR addr2, int *tpp)
1021 TARGET_DEFAULT_RETURN (-1);
1023 /* Get the value of the trace state variable number TSV, returning
1024 1 if the value is known and writing the value itself into the
1025 location pointed to by VAL, else returning 0. */
1026 int (*to_get_trace_state_variable_value) (struct target_ops *,
1027 int tsv, LONGEST *val)
1028 TARGET_DEFAULT_RETURN (0);
1030 int (*to_save_trace_data) (struct target_ops *, const char *filename)
1031 TARGET_DEFAULT_NORETURN (tcomplain ());
1033 int (*to_upload_tracepoints) (struct target_ops *,
1034 struct uploaded_tp **utpp)
1035 TARGET_DEFAULT_RETURN (0);
1037 int (*to_upload_trace_state_variables) (struct target_ops *,
1038 struct uploaded_tsv **utsvp)
1039 TARGET_DEFAULT_RETURN (0);
1041 LONGEST (*to_get_raw_trace_data) (struct target_ops *, gdb_byte *buf,
1042 ULONGEST offset, LONGEST len)
1043 TARGET_DEFAULT_NORETURN (tcomplain ());
1045 /* Get the minimum length of instruction on which a fast tracepoint
1046 may be set on the target. If this operation is unsupported,
1047 return -1. If for some reason the minimum length cannot be
1048 determined, return 0. */
1049 int (*to_get_min_fast_tracepoint_insn_len) (struct target_ops *)
1050 TARGET_DEFAULT_RETURN (-1);
1052 /* Set the target's tracing behavior in response to unexpected
1053 disconnection - set VAL to 1 to keep tracing, 0 to stop. */
1054 void (*to_set_disconnected_tracing) (struct target_ops *, int val)
1055 TARGET_DEFAULT_IGNORE ();
1056 void (*to_set_circular_trace_buffer) (struct target_ops *, int val)
1057 TARGET_DEFAULT_IGNORE ();
1058 /* Set the size of trace buffer in the target. */
1059 void (*to_set_trace_buffer_size) (struct target_ops *, LONGEST val)
1060 TARGET_DEFAULT_IGNORE ();
1062 /* Add/change textual notes about the trace run, returning 1 if
1063 successful, 0 otherwise. */
1064 int (*to_set_trace_notes) (struct target_ops *,
1065 const char *user, const char *notes,
1066 const char *stopnotes)
1067 TARGET_DEFAULT_RETURN (0);
1069 /* Return the processor core that thread PTID was last seen on.
1070 This information is updated only when:
1071 - update_thread_list is called
1073 If the core cannot be determined -- either for the specified
1074 thread, or right now, or in this debug session, or for this
1075 target -- return -1. */
1076 int (*to_core_of_thread) (struct target_ops *, ptid_t ptid)
1077 TARGET_DEFAULT_RETURN (-1);
1079 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range
1080 matches the contents of [DATA,DATA+SIZE). Returns 1 if there's
1081 a match, 0 if there's a mismatch, and -1 if an error is
1082 encountered while reading memory. */
1083 int (*to_verify_memory) (struct target_ops *, const gdb_byte *data,
1084 CORE_ADDR memaddr, ULONGEST size)
1085 TARGET_DEFAULT_FUNC (default_verify_memory);
1087 /* Return the address of the start of the Thread Information Block
1088 a Windows OS specific feature. */
1089 int (*to_get_tib_address) (struct target_ops *,
1090 ptid_t ptid, CORE_ADDR *addr)
1091 TARGET_DEFAULT_NORETURN (tcomplain ());
1093 /* Send the new settings of write permission variables. */
1094 void (*to_set_permissions) (struct target_ops *)
1095 TARGET_DEFAULT_IGNORE ();
1097 /* Look for a static tracepoint marker at ADDR, and fill in MARKER
1098 with its details. Return 1 on success, 0 on failure. */
1099 int (*to_static_tracepoint_marker_at) (struct target_ops *, CORE_ADDR,
1100 struct static_tracepoint_marker *marker)
1101 TARGET_DEFAULT_RETURN (0);
1103 /* Return a vector of all tracepoints markers string id ID, or all
1104 markers if ID is NULL. */
1105 VEC(static_tracepoint_marker_p) *(*to_static_tracepoint_markers_by_strid) (struct target_ops *, const char *id)
1106 TARGET_DEFAULT_NORETURN (tcomplain ());
1108 /* Return a traceframe info object describing the current
1109 traceframe's contents. This method should not cache data;
1110 higher layers take care of caching, invalidating, and
1111 re-fetching when necessary. */
1112 traceframe_info_up (*to_traceframe_info) (struct target_ops *)
1113 TARGET_DEFAULT_NORETURN (tcomplain ());
1115 /* Ask the target to use or not to use agent according to USE. Return 1
1116 successful, 0 otherwise. */
1117 int (*to_use_agent) (struct target_ops *, int use)
1118 TARGET_DEFAULT_NORETURN (tcomplain ());
1120 /* Is the target able to use agent in current state? */
1121 int (*to_can_use_agent) (struct target_ops *)
1122 TARGET_DEFAULT_RETURN (0);
1124 /* Check whether the target supports branch tracing. */
1125 int (*to_supports_btrace) (struct target_ops *, enum btrace_format)
1126 TARGET_DEFAULT_RETURN (0);
1128 /* Enable branch tracing for PTID using CONF configuration.
1129 Return a branch trace target information struct for reading and for
1130 disabling branch trace. */
1131 struct btrace_target_info *(*to_enable_btrace) (struct target_ops *,
1133 const struct btrace_config *conf)
1134 TARGET_DEFAULT_NORETURN (tcomplain ());
1136 /* Disable branch tracing and deallocate TINFO. */
1137 void (*to_disable_btrace) (struct target_ops *,
1138 struct btrace_target_info *tinfo)
1139 TARGET_DEFAULT_NORETURN (tcomplain ());
1141 /* Disable branch tracing and deallocate TINFO. This function is similar
1142 to to_disable_btrace, except that it is called during teardown and is
1143 only allowed to perform actions that are safe. A counter-example would
1144 be attempting to talk to a remote target. */
1145 void (*to_teardown_btrace) (struct target_ops *,
1146 struct btrace_target_info *tinfo)
1147 TARGET_DEFAULT_NORETURN (tcomplain ());
1149 /* Read branch trace data for the thread indicated by BTINFO into DATA.
1150 DATA is cleared before new trace is added. */
1151 enum btrace_error (*to_read_btrace) (struct target_ops *self,
1152 struct btrace_data *data,
1153 struct btrace_target_info *btinfo,
1154 enum btrace_read_type type)
1155 TARGET_DEFAULT_NORETURN (tcomplain ());
1157 /* Get the branch trace configuration. */
1158 const struct btrace_config *(*to_btrace_conf) (struct target_ops *self,
1159 const struct btrace_target_info *)
1160 TARGET_DEFAULT_RETURN (NULL);
1162 /* Current recording method. */
1163 enum record_method (*to_record_method) (struct target_ops *, ptid_t ptid)
1164 TARGET_DEFAULT_RETURN (RECORD_METHOD_NONE);
1166 /* Stop trace recording. */
1167 void (*to_stop_recording) (struct target_ops *)
1168 TARGET_DEFAULT_IGNORE ();
1170 /* Print information about the recording. */
1171 void (*to_info_record) (struct target_ops *)
1172 TARGET_DEFAULT_IGNORE ();
1174 /* Save the recorded execution trace into a file. */
1175 void (*to_save_record) (struct target_ops *, const char *filename)
1176 TARGET_DEFAULT_NORETURN (tcomplain ());
1178 /* Delete the recorded execution trace from the current position
1180 void (*to_delete_record) (struct target_ops *)
1181 TARGET_DEFAULT_NORETURN (tcomplain ());
1183 /* Query if the record target is currently replaying PTID. */
1184 int (*to_record_is_replaying) (struct target_ops *, ptid_t ptid)
1185 TARGET_DEFAULT_RETURN (0);
1187 /* Query if the record target will replay PTID if it were resumed in
1188 execution direction DIR. */
1189 int (*to_record_will_replay) (struct target_ops *, ptid_t ptid, int dir)
1190 TARGET_DEFAULT_RETURN (0);
1192 /* Stop replaying. */
1193 void (*to_record_stop_replaying) (struct target_ops *)
1194 TARGET_DEFAULT_IGNORE ();
1196 /* Go to the begin of the execution trace. */
1197 void (*to_goto_record_begin) (struct target_ops *)
1198 TARGET_DEFAULT_NORETURN (tcomplain ());
1200 /* Go to the end of the execution trace. */
1201 void (*to_goto_record_end) (struct target_ops *)
1202 TARGET_DEFAULT_NORETURN (tcomplain ());
1204 /* Go to a specific location in the recorded execution trace. */
1205 void (*to_goto_record) (struct target_ops *, ULONGEST insn)
1206 TARGET_DEFAULT_NORETURN (tcomplain ());
1208 /* Disassemble SIZE instructions in the recorded execution trace from
1209 the current position.
1210 If SIZE < 0, disassemble abs (SIZE) preceding instructions; otherwise,
1211 disassemble SIZE succeeding instructions. */
1212 void (*to_insn_history) (struct target_ops *, int size,
1213 gdb_disassembly_flags flags)
1214 TARGET_DEFAULT_NORETURN (tcomplain ());
1216 /* Disassemble SIZE instructions in the recorded execution trace around
1218 If SIZE < 0, disassemble abs (SIZE) instructions before FROM; otherwise,
1219 disassemble SIZE instructions after FROM. */
1220 void (*to_insn_history_from) (struct target_ops *,
1221 ULONGEST from, int size,
1222 gdb_disassembly_flags flags)
1223 TARGET_DEFAULT_NORETURN (tcomplain ());
1225 /* Disassemble a section of the recorded execution trace from instruction
1226 BEGIN (inclusive) to instruction END (inclusive). */
1227 void (*to_insn_history_range) (struct target_ops *,
1228 ULONGEST begin, ULONGEST end,
1229 gdb_disassembly_flags flags)
1230 TARGET_DEFAULT_NORETURN (tcomplain ());
1232 /* Print a function trace of the recorded execution trace.
1233 If SIZE < 0, print abs (SIZE) preceding functions; otherwise, print SIZE
1234 succeeding functions. */
1235 void (*to_call_history) (struct target_ops *, int size, int flags)
1236 TARGET_DEFAULT_NORETURN (tcomplain ());
1238 /* Print a function trace of the recorded execution trace starting
1240 If SIZE < 0, print abs (SIZE) functions before FROM; otherwise, print
1241 SIZE functions after FROM. */
1242 void (*to_call_history_from) (struct target_ops *,
1243 ULONGEST begin, int size, int flags)
1244 TARGET_DEFAULT_NORETURN (tcomplain ());
1246 /* Print a function trace of an execution trace section from function BEGIN
1247 (inclusive) to function END (inclusive). */
1248 void (*to_call_history_range) (struct target_ops *,
1249 ULONGEST begin, ULONGEST end, int flags)
1250 TARGET_DEFAULT_NORETURN (tcomplain ());
1252 /* Nonzero if TARGET_OBJECT_LIBRARIES_SVR4 may be read with a
1254 int (*to_augmented_libraries_svr4_read) (struct target_ops *)
1255 TARGET_DEFAULT_RETURN (0);
1257 /* Those unwinders are tried before any other arch unwinders. If
1258 SELF doesn't have unwinders, it should delegate to the
1259 "beneath" target. */
1260 const struct frame_unwind *(*to_get_unwinder) (struct target_ops *self)
1261 TARGET_DEFAULT_RETURN (NULL);
1263 const struct frame_unwind *(*to_get_tailcall_unwinder) (struct target_ops *self)
1264 TARGET_DEFAULT_RETURN (NULL);
1266 /* Prepare to generate a core file. */
1267 void (*to_prepare_to_generate_core) (struct target_ops *)
1268 TARGET_DEFAULT_IGNORE ();
1270 /* Cleanup after generating a core file. */
1271 void (*to_done_generating_core) (struct target_ops *)
1272 TARGET_DEFAULT_IGNORE ();
1275 /* Need sub-structure for target machine related rather than comm related?
1279 /* Magic number for checking ops size. If a struct doesn't end with this
1280 number, somebody changed the declaration but didn't change all the
1281 places that initialize one. */
1283 #define OPS_MAGIC 3840
1285 /* The ops structure for our "current" target process. This should
1286 never be NULL. If there is no target, it points to the dummy_target. */
1288 extern struct target_ops current_target;
1290 /* Define easy words for doing these operations on our current target. */
1292 #define target_shortname (current_target.to_shortname)
1293 #define target_longname (current_target.to_longname)
1295 /* Does whatever cleanup is required for a target that we are no
1296 longer going to be calling. This routine is automatically always
1297 called after popping the target off the target stack - the target's
1298 own methods are no longer available through the target vector.
1299 Closing file descriptors and freeing all memory allocated memory are
1300 typical things it should do. */
1302 void target_close (struct target_ops *targ);
1304 /* Find the correct target to use for "attach". If a target on the
1305 current stack supports attaching, then it is returned. Otherwise,
1306 the default run target is returned. */
1308 extern struct target_ops *find_attach_target (void);
1310 /* Find the correct target to use for "run". If a target on the
1311 current stack supports creating a new inferior, then it is
1312 returned. Otherwise, the default run target is returned. */
1314 extern struct target_ops *find_run_target (void);
1316 /* Some targets don't generate traps when attaching to the inferior,
1317 or their target_attach implementation takes care of the waiting.
1318 These targets must set to_attach_no_wait. */
1320 #define target_attach_no_wait \
1321 (current_target.to_attach_no_wait)
1323 /* The target_attach operation places a process under debugger control,
1324 and stops the process.
1326 This operation provides a target-specific hook that allows the
1327 necessary bookkeeping to be performed after an attach completes. */
1328 #define target_post_attach(pid) \
1329 (*current_target.to_post_attach) (¤t_target, pid)
1331 /* Display a message indicating we're about to detach from the current
1332 inferior process. */
1334 extern void target_announce_detach (int from_tty);
1336 /* Takes a program previously attached to and detaches it.
1337 The program may resume execution (some targets do, some don't) and will
1338 no longer stop on signals, etc. We better not have left any breakpoints
1339 in the program or it'll die when it hits one. ARGS is arguments
1340 typed by the user (e.g. a signal to send the process). FROM_TTY
1341 says whether to be verbose or not. */
1343 extern void target_detach (const char *, int);
1345 /* Disconnect from the current target without resuming it (leaving it
1346 waiting for a debugger). */
1348 extern void target_disconnect (const char *, int);
1350 /* Resume execution (or prepare for execution) of a target thread,
1351 process or all processes. STEP says whether to hardware
1352 single-step or to run free; SIGGNAL is the signal to be given to
1353 the target, or GDB_SIGNAL_0 for no signal. The caller may not pass
1354 GDB_SIGNAL_DEFAULT. A specific PTID means `step/resume only this
1355 process id'. A wildcard PTID (all threads, or all threads of
1356 process) means `step/resume INFERIOR_PTID, and let other threads
1357 (for which the wildcard PTID matches) resume with their
1358 'thread->suspend.stop_signal' signal (usually GDB_SIGNAL_0) if it
1359 is in "pass" state, or with no signal if in "no pass" state.
1361 In order to efficiently handle batches of resumption requests,
1362 targets may implement this method such that it records the
1363 resumption request, but defers the actual resumption to the
1364 target_commit_resume method implementation. See
1365 target_commit_resume below. */
1366 extern void target_resume (ptid_t ptid, int step, enum gdb_signal signal);
1368 /* Commit a series of resumption requests previously prepared with
1369 target_resume calls.
1371 GDB always calls target_commit_resume after calling target_resume
1372 one or more times. A target may thus use this method in
1373 coordination with the target_resume method to batch target-side
1374 resumption requests. In that case, the target doesn't actually
1375 resume in its target_resume implementation. Instead, it prepares
1376 the resumption in target_resume, and defers the actual resumption
1377 to target_commit_resume. E.g., the remote target uses this to
1378 coalesce multiple resumption requests in a single vCont packet. */
1379 extern void target_commit_resume ();
1381 /* Setup to defer target_commit_resume calls, and reactivate
1382 target_commit_resume on destruction, if it was previously
1384 extern scoped_restore_tmpl<int> make_scoped_defer_target_commit_resume ();
1386 /* For target_read_memory see target/target.h. */
1388 /* The default target_ops::to_wait implementation. */
1390 extern ptid_t default_target_wait (struct target_ops *ops,
1392 struct target_waitstatus *status,
1395 /* Fetch at least register REGNO, or all regs if regno == -1. No result. */
1397 extern void target_fetch_registers (struct regcache *regcache, int regno);
1399 /* Store at least register REGNO, or all regs if REGNO == -1.
1400 It can store as many registers as it wants to, so target_prepare_to_store
1401 must have been previously called. Calls error() if there are problems. */
1403 extern void target_store_registers (struct regcache *regcache, int regs);
1405 /* Get ready to modify the registers array. On machines which store
1406 individual registers, this doesn't need to do anything. On machines
1407 which store all the registers in one fell swoop, this makes sure
1408 that REGISTERS contains all the registers from the program being
1411 #define target_prepare_to_store(regcache) \
1412 (*current_target.to_prepare_to_store) (¤t_target, regcache)
1414 /* Determine current address space of thread PTID. */
1416 struct address_space *target_thread_address_space (ptid_t);
1418 /* Implement the "info proc" command. This returns one if the request
1419 was handled, and zero otherwise. It can also throw an exception if
1420 an error was encountered while attempting to handle the
1423 int target_info_proc (const char *, enum info_proc_what);
1425 /* Returns true if this target can disable address space randomization. */
1427 int target_supports_disable_randomization (void);
1429 /* Returns true if this target can enable and disable tracepoints
1430 while a trace experiment is running. */
1432 #define target_supports_enable_disable_tracepoint() \
1433 (*current_target.to_supports_enable_disable_tracepoint) (¤t_target)
1435 #define target_supports_string_tracing() \
1436 (*current_target.to_supports_string_tracing) (¤t_target)
1438 /* Returns true if this target can handle breakpoint conditions
1441 #define target_supports_evaluation_of_breakpoint_conditions() \
1442 (*current_target.to_supports_evaluation_of_breakpoint_conditions) (¤t_target)
1444 /* Returns true if this target can handle breakpoint commands
1447 #define target_can_run_breakpoint_commands() \
1448 (*current_target.to_can_run_breakpoint_commands) (¤t_target)
1450 extern int target_read_string (CORE_ADDR, char **, int, int *);
1452 /* For target_read_memory see target/target.h. */
1454 extern int target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr,
1457 extern int target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len);
1459 extern int target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len);
1461 /* For target_write_memory see target/target.h. */
1463 extern int target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr,
1466 /* Fetches the target's memory map. If one is found it is sorted
1467 and returned, after some consistency checking. Otherwise, NULL
1469 std::vector<mem_region> target_memory_map (void);
1471 /* Erases all flash memory regions on the target. */
1472 void flash_erase_command (const char *cmd, int from_tty);
1474 /* Erase the specified flash region. */
1475 void target_flash_erase (ULONGEST address, LONGEST length);
1477 /* Finish a sequence of flash operations. */
1478 void target_flash_done (void);
1480 /* Describes a request for a memory write operation. */
1481 struct memory_write_request
1483 /* Begining address that must be written. */
1485 /* Past-the-end address. */
1487 /* The data to write. */
1489 /* A callback baton for progress reporting for this request. */
1492 typedef struct memory_write_request memory_write_request_s;
1493 DEF_VEC_O(memory_write_request_s);
1495 /* Enumeration specifying different flash preservation behaviour. */
1496 enum flash_preserve_mode
1502 /* Write several memory blocks at once. This version can be more
1503 efficient than making several calls to target_write_memory, in
1504 particular because it can optimize accesses to flash memory.
1506 Moreover, this is currently the only memory access function in gdb
1507 that supports writing to flash memory, and it should be used for
1508 all cases where access to flash memory is desirable.
1510 REQUESTS is the vector (see vec.h) of memory_write_request.
1511 PRESERVE_FLASH_P indicates what to do with blocks which must be
1512 erased, but not completely rewritten.
1513 PROGRESS_CB is a function that will be periodically called to provide
1514 feedback to user. It will be called with the baton corresponding
1515 to the request currently being written. It may also be called
1516 with a NULL baton, when preserved flash sectors are being rewritten.
1518 The function returns 0 on success, and error otherwise. */
1519 int target_write_memory_blocks (VEC(memory_write_request_s) *requests,
1520 enum flash_preserve_mode preserve_flash_p,
1521 void (*progress_cb) (ULONGEST, void *));
1523 /* Print a line about the current target. */
1525 #define target_files_info() \
1526 (*current_target.to_files_info) (¤t_target)
1528 /* Insert a breakpoint at address BP_TGT->placed_address in
1529 the target machine. Returns 0 for success, and returns non-zero or
1530 throws an error (with a detailed failure reason error code and
1531 message) otherwise. */
1533 extern int target_insert_breakpoint (struct gdbarch *gdbarch,
1534 struct bp_target_info *bp_tgt);
1536 /* Remove a breakpoint at address BP_TGT->placed_address in the target
1537 machine. Result is 0 for success, non-zero for error. */
1539 extern int target_remove_breakpoint (struct gdbarch *gdbarch,
1540 struct bp_target_info *bp_tgt,
1541 enum remove_bp_reason reason);
1543 /* Return true if the target stack has a non-default
1544 "to_terminal_ours" method. */
1546 extern int target_supports_terminal_ours (void);
1548 /* Kill the inferior process. Make it go away. */
1550 extern void target_kill (void);
1552 /* Load an executable file into the target process. This is expected
1553 to not only bring new code into the target process, but also to
1554 update GDB's symbol tables to match.
1556 ARG contains command-line arguments, to be broken down with
1557 buildargv (). The first non-switch argument is the filename to
1558 load, FILE; the second is a number (as parsed by strtoul (..., ...,
1559 0)), which is an offset to apply to the load addresses of FILE's
1560 sections. The target may define switches, or other non-switch
1561 arguments, as it pleases. */
1563 extern void target_load (const char *arg, int from_tty);
1565 /* Some targets (such as ttrace-based HPUX) don't allow us to request
1566 notification of inferior events such as fork and vork immediately
1567 after the inferior is created. (This because of how gdb gets an
1568 inferior created via invoking a shell to do it. In such a scenario,
1569 if the shell init file has commands in it, the shell will fork and
1570 exec for each of those commands, and we will see each such fork
1573 Such targets will supply an appropriate definition for this function. */
1575 #define target_post_startup_inferior(ptid) \
1576 (*current_target.to_post_startup_inferior) (¤t_target, ptid)
1578 /* On some targets, we can catch an inferior fork or vfork event when
1579 it occurs. These functions insert/remove an already-created
1580 catchpoint for such events. They return 0 for success, 1 if the
1581 catchpoint type is not supported and -1 for failure. */
1583 #define target_insert_fork_catchpoint(pid) \
1584 (*current_target.to_insert_fork_catchpoint) (¤t_target, pid)
1586 #define target_remove_fork_catchpoint(pid) \
1587 (*current_target.to_remove_fork_catchpoint) (¤t_target, pid)
1589 #define target_insert_vfork_catchpoint(pid) \
1590 (*current_target.to_insert_vfork_catchpoint) (¤t_target, pid)
1592 #define target_remove_vfork_catchpoint(pid) \
1593 (*current_target.to_remove_vfork_catchpoint) (¤t_target, pid)
1595 /* If the inferior forks or vforks, this function will be called at
1596 the next resume in order to perform any bookkeeping and fiddling
1597 necessary to continue debugging either the parent or child, as
1598 requested, and releasing the other. Information about the fork
1599 or vfork event is available via get_last_target_status ().
1600 This function returns 1 if the inferior should not be resumed
1601 (i.e. there is another event pending). */
1603 int target_follow_fork (int follow_child, int detach_fork);
1605 /* Handle the target-specific bookkeeping required when the inferior
1606 makes an exec call. INF is the exec'd inferior. */
1608 void target_follow_exec (struct inferior *inf, char *execd_pathname);
1610 /* On some targets, we can catch an inferior exec event when it
1611 occurs. These functions insert/remove an already-created
1612 catchpoint for such events. They return 0 for success, 1 if the
1613 catchpoint type is not supported and -1 for failure. */
1615 #define target_insert_exec_catchpoint(pid) \
1616 (*current_target.to_insert_exec_catchpoint) (¤t_target, pid)
1618 #define target_remove_exec_catchpoint(pid) \
1619 (*current_target.to_remove_exec_catchpoint) (¤t_target, pid)
1623 NEEDED is nonzero if any syscall catch (of any kind) is requested.
1624 If NEEDED is zero, it means the target can disable the mechanism to
1625 catch system calls because there are no more catchpoints of this type.
1627 ANY_COUNT is nonzero if a generic (filter-less) syscall catch is
1628 being requested. In this case, both TABLE_SIZE and TABLE should
1631 TABLE_SIZE is the number of elements in TABLE. It only matters if
1634 TABLE is an array of ints, indexed by syscall number. An element in
1635 this array is nonzero if that syscall should be caught. This argument
1636 only matters if ANY_COUNT is zero.
1638 Return 0 for success, 1 if syscall catchpoints are not supported or -1
1641 #define target_set_syscall_catchpoint(pid, needed, any_count, table_size, table) \
1642 (*current_target.to_set_syscall_catchpoint) (¤t_target, \
1643 pid, needed, any_count, \
1646 /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the
1647 exit code of PID, if any. */
1649 #define target_has_exited(pid,wait_status,exit_status) \
1650 (*current_target.to_has_exited) (¤t_target, \
1651 pid,wait_status,exit_status)
1653 /* The debugger has completed a blocking wait() call. There is now
1654 some process event that must be processed. This function should
1655 be defined by those targets that require the debugger to perform
1656 cleanup or internal state changes in response to the process event. */
1658 /* For target_mourn_inferior see target/target.h. */
1660 /* Does target have enough data to do a run or attach command? */
1662 #define target_can_run(t) \
1663 ((t)->to_can_run) (t)
1665 /* Set list of signals to be handled in the target.
1667 PASS_SIGNALS is an array of size NSIG, indexed by target signal number
1668 (enum gdb_signal). For every signal whose entry in this array is
1669 non-zero, the target is allowed -but not required- to skip reporting
1670 arrival of the signal to the GDB core by returning from target_wait,
1671 and to pass the signal directly to the inferior instead.
1673 However, if the target is hardware single-stepping a thread that is
1674 about to receive a signal, it needs to be reported in any case, even
1675 if mentioned in a previous target_pass_signals call. */
1677 extern void target_pass_signals (int nsig, unsigned char *pass_signals);
1679 /* Set list of signals the target may pass to the inferior. This
1680 directly maps to the "handle SIGNAL pass/nopass" setting.
1682 PROGRAM_SIGNALS is an array of size NSIG, indexed by target signal
1683 number (enum gdb_signal). For every signal whose entry in this
1684 array is non-zero, the target is allowed to pass the signal to the
1685 inferior. Signals not present in the array shall be silently
1686 discarded. This does not influence whether to pass signals to the
1687 inferior as a result of a target_resume call. This is useful in
1688 scenarios where the target needs to decide whether to pass or not a
1689 signal to the inferior without GDB core involvement, such as for
1690 example, when detaching (as threads may have been suspended with
1691 pending signals not reported to GDB). */
1693 extern void target_program_signals (int nsig, unsigned char *program_signals);
1695 /* Check to see if a thread is still alive. */
1697 extern int target_thread_alive (ptid_t ptid);
1699 /* Sync the target's threads with GDB's thread list. */
1701 extern void target_update_thread_list (void);
1703 /* Make target stop in a continuable fashion. (For instance, under
1704 Unix, this should act like SIGSTOP). Note that this function is
1705 asynchronous: it does not wait for the target to become stopped
1706 before returning. If this is the behavior you want please use
1707 target_stop_and_wait. */
1709 extern void target_stop (ptid_t ptid);
1711 /* Interrupt the target just like the user typed a ^C on the
1712 inferior's controlling terminal. (For instance, under Unix, this
1713 should act like SIGINT). This function is asynchronous. */
1715 extern void target_interrupt (ptid_t ptid);
1717 /* Pass a ^C, as determined to have been pressed by checking the quit
1718 flag, to the target. Normally calls target_interrupt, but remote
1719 targets may take the opportunity to detect the remote side is not
1720 responding and offer to disconnect. */
1722 extern void target_pass_ctrlc (void);
1724 /* The default target_ops::to_pass_ctrlc implementation. Simply calls
1725 target_interrupt. */
1726 extern void default_target_pass_ctrlc (struct target_ops *ops);
1728 /* Send the specified COMMAND to the target's monitor
1729 (shell,interpreter) for execution. The result of the query is
1730 placed in OUTBUF. */
1732 #define target_rcmd(command, outbuf) \
1733 (*current_target.to_rcmd) (¤t_target, command, outbuf)
1736 /* Does the target include all of memory, or only part of it? This
1737 determines whether we look up the target chain for other parts of
1738 memory if this target can't satisfy a request. */
1740 extern int target_has_all_memory_1 (void);
1741 #define target_has_all_memory target_has_all_memory_1 ()
1743 /* Does the target include memory? (Dummy targets don't.) */
1745 extern int target_has_memory_1 (void);
1746 #define target_has_memory target_has_memory_1 ()
1748 /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until
1749 we start a process.) */
1751 extern int target_has_stack_1 (void);
1752 #define target_has_stack target_has_stack_1 ()
1754 /* Does the target have registers? (Exec files don't.) */
1756 extern int target_has_registers_1 (void);
1757 #define target_has_registers target_has_registers_1 ()
1759 /* Does the target have execution? Can we make it jump (through
1760 hoops), or pop its stack a few times? This means that the current
1761 target is currently executing; for some targets, that's the same as
1762 whether or not the target is capable of execution, but there are
1763 also targets which can be current while not executing. In that
1764 case this will become true after to_create_inferior or
1767 extern int target_has_execution_1 (ptid_t);
1769 /* Like target_has_execution_1, but always passes inferior_ptid. */
1771 extern int target_has_execution_current (void);
1773 #define target_has_execution target_has_execution_current ()
1775 /* Default implementations for process_stratum targets. Return true
1776 if there's a selected inferior, false otherwise. */
1778 extern int default_child_has_all_memory (struct target_ops *ops);
1779 extern int default_child_has_memory (struct target_ops *ops);
1780 extern int default_child_has_stack (struct target_ops *ops);
1781 extern int default_child_has_registers (struct target_ops *ops);
1782 extern int default_child_has_execution (struct target_ops *ops,
1785 /* Can the target support the debugger control of thread execution?
1786 Can it lock the thread scheduler? */
1788 #define target_can_lock_scheduler \
1789 (current_target.to_has_thread_control & tc_schedlock)
1791 /* Controls whether async mode is permitted. */
1792 extern int target_async_permitted;
1794 /* Can the target support asynchronous execution? */
1795 #define target_can_async_p() (current_target.to_can_async_p (¤t_target))
1797 /* Is the target in asynchronous execution mode? */
1798 #define target_is_async_p() (current_target.to_is_async_p (¤t_target))
1800 /* Enables/disabled async target events. */
1801 extern void target_async (int enable);
1803 /* Enables/disables thread create and exit events. */
1804 extern void target_thread_events (int enable);
1806 /* Whether support for controlling the target backends always in
1807 non-stop mode is enabled. */
1808 extern enum auto_boolean target_non_stop_enabled;
1810 /* Is the target in non-stop mode? Some targets control the inferior
1811 in non-stop mode even with "set non-stop off". Always true if "set
1813 extern int target_is_non_stop_p (void);
1815 #define target_execution_direction() \
1816 (current_target.to_execution_direction (¤t_target))
1818 /* Converts a process id to a string. Usually, the string just contains
1819 `process xyz', but on some systems it may contain
1820 `process xyz thread abc'. */
1822 extern const char *target_pid_to_str (ptid_t ptid);
1824 extern const char *normal_pid_to_str (ptid_t ptid);
1826 /* Return a short string describing extra information about PID,
1827 e.g. "sleeping", "runnable", "running on LWP 3". Null return value
1830 #define target_extra_thread_info(TP) \
1831 (current_target.to_extra_thread_info (¤t_target, TP))
1833 /* Return the thread's name, or NULL if the target is unable to determine it.
1834 The returned value must not be freed by the caller. */
1836 extern const char *target_thread_name (struct thread_info *);
1838 /* Given a pointer to a thread library specific thread handle and
1839 its length, return a pointer to the corresponding thread_info struct. */
1841 extern struct thread_info *target_thread_handle_to_thread_info
1842 (const gdb_byte *thread_handle, int handle_len, struct inferior *inf);
1844 /* Attempts to find the pathname of the executable file
1845 that was run to create a specified process.
1847 The process PID must be stopped when this operation is used.
1849 If the executable file cannot be determined, NULL is returned.
1851 Else, a pointer to a character string containing the pathname
1852 is returned. This string should be copied into a buffer by
1853 the client if the string will not be immediately used, or if
1856 #define target_pid_to_exec_file(pid) \
1857 (current_target.to_pid_to_exec_file) (¤t_target, pid)
1859 /* See the to_thread_architecture description in struct target_ops. */
1861 #define target_thread_architecture(ptid) \
1862 (current_target.to_thread_architecture (¤t_target, ptid))
1865 * Iterator function for target memory regions.
1866 * Calls a callback function once for each memory region 'mapped'
1867 * in the child process. Defined as a simple macro rather than
1868 * as a function macro so that it can be tested for nullity.
1871 #define target_find_memory_regions(FUNC, DATA) \
1872 (current_target.to_find_memory_regions) (¤t_target, FUNC, DATA)
1875 * Compose corefile .note section.
1878 #define target_make_corefile_notes(BFD, SIZE_P) \
1879 (current_target.to_make_corefile_notes) (¤t_target, BFD, SIZE_P)
1881 /* Bookmark interfaces. */
1882 #define target_get_bookmark(ARGS, FROM_TTY) \
1883 (current_target.to_get_bookmark) (¤t_target, ARGS, FROM_TTY)
1885 #define target_goto_bookmark(ARG, FROM_TTY) \
1886 (current_target.to_goto_bookmark) (¤t_target, ARG, FROM_TTY)
1888 /* Hardware watchpoint interfaces. */
1890 /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or
1891 write). Only the INFERIOR_PTID task is being queried. */
1893 #define target_stopped_by_watchpoint() \
1894 ((*current_target.to_stopped_by_watchpoint) (¤t_target))
1896 /* Returns non-zero if the target stopped because it executed a
1897 software breakpoint instruction. */
1899 #define target_stopped_by_sw_breakpoint() \
1900 ((*current_target.to_stopped_by_sw_breakpoint) (¤t_target))
1902 #define target_supports_stopped_by_sw_breakpoint() \
1903 ((*current_target.to_supports_stopped_by_sw_breakpoint) (¤t_target))
1905 #define target_stopped_by_hw_breakpoint() \
1906 ((*current_target.to_stopped_by_hw_breakpoint) (¤t_target))
1908 #define target_supports_stopped_by_hw_breakpoint() \
1909 ((*current_target.to_supports_stopped_by_hw_breakpoint) (¤t_target))
1911 /* Non-zero if we have steppable watchpoints */
1913 #define target_have_steppable_watchpoint \
1914 (current_target.to_have_steppable_watchpoint)
1916 /* Non-zero if we have continuable watchpoints */
1918 #define target_have_continuable_watchpoint \
1919 (current_target.to_have_continuable_watchpoint)
1921 /* Provide defaults for hardware watchpoint functions. */
1923 /* If the *_hw_beakpoint functions have not been defined
1924 elsewhere use the definitions in the target vector. */
1926 /* Returns positive if we can set a hardware watchpoint of type TYPE.
1927 Returns negative if the target doesn't have enough hardware debug
1928 registers available. Return zero if hardware watchpoint of type
1929 TYPE isn't supported. TYPE is one of bp_hardware_watchpoint,
1930 bp_read_watchpoint, bp_write_watchpoint, or bp_hardware_breakpoint.
1931 CNT is the number of such watchpoints used so far, including this
1932 one. OTHERTYPE is the number of watchpoints of other types than
1933 this one used so far. */
1935 #define target_can_use_hardware_watchpoint(TYPE,CNT,OTHERTYPE) \
1936 (*current_target.to_can_use_hw_breakpoint) (¤t_target, \
1937 TYPE, CNT, OTHERTYPE)
1939 /* Returns the number of debug registers needed to watch the given
1940 memory region, or zero if not supported. */
1942 #define target_region_ok_for_hw_watchpoint(addr, len) \
1943 (*current_target.to_region_ok_for_hw_watchpoint) (¤t_target, \
1947 #define target_can_do_single_step() \
1948 (*current_target.to_can_do_single_step) (¤t_target)
1950 /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes.
1951 TYPE is 0 for write, 1 for read, and 2 for read/write accesses.
1952 COND is the expression for its condition, or NULL if there's none.
1953 Returns 0 for success, 1 if the watchpoint type is not supported,
1956 #define target_insert_watchpoint(addr, len, type, cond) \
1957 (*current_target.to_insert_watchpoint) (¤t_target, \
1958 addr, len, type, cond)
1960 #define target_remove_watchpoint(addr, len, type, cond) \
1961 (*current_target.to_remove_watchpoint) (¤t_target, \
1962 addr, len, type, cond)
1964 /* Insert a new masked watchpoint at ADDR using the mask MASK.
1965 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
1966 or hw_access for an access watchpoint. Returns 0 for success, 1 if
1967 masked watchpoints are not supported, -1 for failure. */
1969 extern int target_insert_mask_watchpoint (CORE_ADDR, CORE_ADDR,
1970 enum target_hw_bp_type);
1972 /* Remove a masked watchpoint at ADDR with the mask MASK.
1973 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
1974 or hw_access for an access watchpoint. Returns 0 for success, non-zero
1977 extern int target_remove_mask_watchpoint (CORE_ADDR, CORE_ADDR,
1978 enum target_hw_bp_type);
1980 /* Insert a hardware breakpoint at address BP_TGT->placed_address in
1981 the target machine. Returns 0 for success, and returns non-zero or
1982 throws an error (with a detailed failure reason error code and
1983 message) otherwise. */
1985 #define target_insert_hw_breakpoint(gdbarch, bp_tgt) \
1986 (*current_target.to_insert_hw_breakpoint) (¤t_target, \
1989 #define target_remove_hw_breakpoint(gdbarch, bp_tgt) \
1990 (*current_target.to_remove_hw_breakpoint) (¤t_target, \
1993 /* Return number of debug registers needed for a ranged breakpoint,
1994 or -1 if ranged breakpoints are not supported. */
1996 extern int target_ranged_break_num_registers (void);
1998 /* Return non-zero if target knows the data address which triggered this
1999 target_stopped_by_watchpoint, in such case place it to *ADDR_P. Only the
2000 INFERIOR_PTID task is being queried. */
2001 #define target_stopped_data_address(target, addr_p) \
2002 (*(target)->to_stopped_data_address) (target, addr_p)
2004 /* Return non-zero if ADDR is within the range of a watchpoint spanning
2005 LENGTH bytes beginning at START. */
2006 #define target_watchpoint_addr_within_range(target, addr, start, length) \
2007 (*(target)->to_watchpoint_addr_within_range) (target, addr, start, length)
2009 /* Return non-zero if the target is capable of using hardware to evaluate
2010 the condition expression. In this case, if the condition is false when
2011 the watched memory location changes, execution may continue without the
2012 debugger being notified.
2014 Due to limitations in the hardware implementation, it may be capable of
2015 avoiding triggering the watchpoint in some cases where the condition
2016 expression is false, but may report some false positives as well.
2017 For this reason, GDB will still evaluate the condition expression when
2018 the watchpoint triggers. */
2019 #define target_can_accel_watchpoint_condition(addr, len, type, cond) \
2020 (*current_target.to_can_accel_watchpoint_condition) (¤t_target, \
2021 addr, len, type, cond)
2023 /* Return number of debug registers needed for a masked watchpoint,
2024 -1 if masked watchpoints are not supported or -2 if the given address
2025 and mask combination cannot be used. */
2027 extern int target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask);
2029 /* Target can execute in reverse? */
2030 #define target_can_execute_reverse \
2031 current_target.to_can_execute_reverse (¤t_target)
2033 extern const struct target_desc *target_read_description (struct target_ops *);
2035 #define target_get_ada_task_ptid(lwp, tid) \
2036 (*current_target.to_get_ada_task_ptid) (¤t_target, lwp,tid)
2038 /* Utility implementation of searching memory. */
2039 extern int simple_search_memory (struct target_ops* ops,
2040 CORE_ADDR start_addr,
2041 ULONGEST search_space_len,
2042 const gdb_byte *pattern,
2043 ULONGEST pattern_len,
2044 CORE_ADDR *found_addrp);
2046 /* Main entry point for searching memory. */
2047 extern int target_search_memory (CORE_ADDR start_addr,
2048 ULONGEST search_space_len,
2049 const gdb_byte *pattern,
2050 ULONGEST pattern_len,
2051 CORE_ADDR *found_addrp);
2053 /* Target file operations. */
2055 /* Return nonzero if the filesystem seen by the current inferior
2056 is the local filesystem, zero otherwise. */
2057 #define target_filesystem_is_local() \
2058 current_target.to_filesystem_is_local (¤t_target)
2060 /* Open FILENAME on the target, in the filesystem as seen by INF,
2061 using FLAGS and MODE. If INF is NULL, use the filesystem seen
2062 by the debugger (GDB or, for remote targets, the remote stub).
2063 Return a target file descriptor, or -1 if an error occurs (and
2064 set *TARGET_ERRNO). */
2065 extern int target_fileio_open (struct inferior *inf,
2066 const char *filename, int flags,
2067 int mode, int *target_errno);
2069 /* Like target_fileio_open, but print a warning message if the
2070 file is being accessed over a link that may be slow. */
2071 extern int target_fileio_open_warn_if_slow (struct inferior *inf,
2072 const char *filename,
2077 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
2078 Return the number of bytes written, or -1 if an error occurs
2079 (and set *TARGET_ERRNO). */
2080 extern int target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len,
2081 ULONGEST offset, int *target_errno);
2083 /* Read up to LEN bytes FD on the target into READ_BUF.
2084 Return the number of bytes read, or -1 if an error occurs
2085 (and set *TARGET_ERRNO). */
2086 extern int target_fileio_pread (int fd, gdb_byte *read_buf, int len,
2087 ULONGEST offset, int *target_errno);
2089 /* Get information about the file opened as FD on the target
2090 and put it in SB. Return 0 on success, or -1 if an error
2091 occurs (and set *TARGET_ERRNO). */
2092 extern int target_fileio_fstat (int fd, struct stat *sb,
2095 /* Close FD on the target. Return 0, or -1 if an error occurs
2096 (and set *TARGET_ERRNO). */
2097 extern int target_fileio_close (int fd, int *target_errno);
2099 /* Unlink FILENAME on the target, in the filesystem as seen by INF.
2100 If INF is NULL, use the filesystem seen by the debugger (GDB or,
2101 for remote targets, the remote stub). Return 0, or -1 if an error
2102 occurs (and set *TARGET_ERRNO). */
2103 extern int target_fileio_unlink (struct inferior *inf,
2104 const char *filename,
2107 /* Read value of symbolic link FILENAME on the target, in the
2108 filesystem as seen by INF. If INF is NULL, use the filesystem seen
2109 by the debugger (GDB or, for remote targets, the remote stub).
2110 Return a null-terminated string allocated via xmalloc, or NULL if
2111 an error occurs (and set *TARGET_ERRNO). */
2112 extern char *target_fileio_readlink (struct inferior *inf,
2113 const char *filename,
2116 /* Read target file FILENAME, in the filesystem as seen by INF. If
2117 INF is NULL, use the filesystem seen by the debugger (GDB or, for
2118 remote targets, the remote stub). The return value will be -1 if
2119 the transfer fails or is not supported; 0 if the object is empty;
2120 or the length of the object otherwise. If a positive value is
2121 returned, a sufficiently large buffer will be allocated using
2122 xmalloc and returned in *BUF_P containing the contents of the
2125 This method should be used for objects sufficiently small to store
2126 in a single xmalloc'd buffer, when no fixed bound on the object's
2127 size is known in advance. */
2128 extern LONGEST target_fileio_read_alloc (struct inferior *inf,
2129 const char *filename,
2132 /* Read target file FILENAME, in the filesystem as seen by INF. If
2133 INF is NULL, use the filesystem seen by the debugger (GDB or, for
2134 remote targets, the remote stub). The result is NUL-terminated and
2135 returned as a string, allocated using xmalloc. If an error occurs
2136 or the transfer is unsupported, NULL is returned. Empty objects
2137 are returned as allocated but empty strings. A warning is issued
2138 if the result contains any embedded NUL bytes. */
2139 extern gdb::unique_xmalloc_ptr<char> target_fileio_read_stralloc
2140 (struct inferior *inf, const char *filename);
2143 /* Tracepoint-related operations. */
2145 #define target_trace_init() \
2146 (*current_target.to_trace_init) (¤t_target)
2148 #define target_download_tracepoint(t) \
2149 (*current_target.to_download_tracepoint) (¤t_target, t)
2151 #define target_can_download_tracepoint() \
2152 (*current_target.to_can_download_tracepoint) (¤t_target)
2154 #define target_download_trace_state_variable(tsv) \
2155 (*current_target.to_download_trace_state_variable) (¤t_target, tsv)
2157 #define target_enable_tracepoint(loc) \
2158 (*current_target.to_enable_tracepoint) (¤t_target, loc)
2160 #define target_disable_tracepoint(loc) \
2161 (*current_target.to_disable_tracepoint) (¤t_target, loc)
2163 #define target_trace_start() \
2164 (*current_target.to_trace_start) (¤t_target)
2166 #define target_trace_set_readonly_regions() \
2167 (*current_target.to_trace_set_readonly_regions) (¤t_target)
2169 #define target_get_trace_status(ts) \
2170 (*current_target.to_get_trace_status) (¤t_target, ts)
2172 #define target_get_tracepoint_status(tp,utp) \
2173 (*current_target.to_get_tracepoint_status) (¤t_target, tp, utp)
2175 #define target_trace_stop() \
2176 (*current_target.to_trace_stop) (¤t_target)
2178 #define target_trace_find(type,num,addr1,addr2,tpp) \
2179 (*current_target.to_trace_find) (¤t_target, \
2180 (type), (num), (addr1), (addr2), (tpp))
2182 #define target_get_trace_state_variable_value(tsv,val) \
2183 (*current_target.to_get_trace_state_variable_value) (¤t_target, \
2186 #define target_save_trace_data(filename) \
2187 (*current_target.to_save_trace_data) (¤t_target, filename)
2189 #define target_upload_tracepoints(utpp) \
2190 (*current_target.to_upload_tracepoints) (¤t_target, utpp)
2192 #define target_upload_trace_state_variables(utsvp) \
2193 (*current_target.to_upload_trace_state_variables) (¤t_target, utsvp)
2195 #define target_get_raw_trace_data(buf,offset,len) \
2196 (*current_target.to_get_raw_trace_data) (¤t_target, \
2197 (buf), (offset), (len))
2199 #define target_get_min_fast_tracepoint_insn_len() \
2200 (*current_target.to_get_min_fast_tracepoint_insn_len) (¤t_target)
2202 #define target_set_disconnected_tracing(val) \
2203 (*current_target.to_set_disconnected_tracing) (¤t_target, val)
2205 #define target_set_circular_trace_buffer(val) \
2206 (*current_target.to_set_circular_trace_buffer) (¤t_target, val)
2208 #define target_set_trace_buffer_size(val) \
2209 (*current_target.to_set_trace_buffer_size) (¤t_target, val)
2211 #define target_set_trace_notes(user,notes,stopnotes) \
2212 (*current_target.to_set_trace_notes) (¤t_target, \
2213 (user), (notes), (stopnotes))
2215 #define target_get_tib_address(ptid, addr) \
2216 (*current_target.to_get_tib_address) (¤t_target, (ptid), (addr))
2218 #define target_set_permissions() \
2219 (*current_target.to_set_permissions) (¤t_target)
2221 #define target_static_tracepoint_marker_at(addr, marker) \
2222 (*current_target.to_static_tracepoint_marker_at) (¤t_target, \
2225 #define target_static_tracepoint_markers_by_strid(marker_id) \
2226 (*current_target.to_static_tracepoint_markers_by_strid) (¤t_target, \
2229 #define target_traceframe_info() \
2230 (*current_target.to_traceframe_info) (¤t_target)
2232 #define target_use_agent(use) \
2233 (*current_target.to_use_agent) (¤t_target, use)
2235 #define target_can_use_agent() \
2236 (*current_target.to_can_use_agent) (¤t_target)
2238 #define target_augmented_libraries_svr4_read() \
2239 (*current_target.to_augmented_libraries_svr4_read) (¤t_target)
2241 /* Command logging facility. */
2243 #define target_log_command(p) \
2244 (*current_target.to_log_command) (¤t_target, p)
2247 extern int target_core_of_thread (ptid_t ptid);
2249 /* See to_get_unwinder in struct target_ops. */
2250 extern const struct frame_unwind *target_get_unwinder (void);
2252 /* See to_get_tailcall_unwinder in struct target_ops. */
2253 extern const struct frame_unwind *target_get_tailcall_unwinder (void);
2255 /* This implements basic memory verification, reading target memory
2256 and performing the comparison here (as opposed to accelerated
2257 verification making use of the qCRC packet, for example). */
2259 extern int simple_verify_memory (struct target_ops* ops,
2260 const gdb_byte *data,
2261 CORE_ADDR memaddr, ULONGEST size);
2263 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range matches
2264 the contents of [DATA,DATA+SIZE). Returns 1 if there's a match, 0
2265 if there's a mismatch, and -1 if an error is encountered while
2266 reading memory. Throws an error if the functionality is found not
2267 to be supported by the current target. */
2268 int target_verify_memory (const gdb_byte *data,
2269 CORE_ADDR memaddr, ULONGEST size);
2271 /* Routines for maintenance of the target structures...
2273 complete_target_initialization: Finalize a target_ops by filling in
2274 any fields needed by the target implementation. Unnecessary for
2275 targets which are registered via add_target, as this part gets
2278 add_target: Add a target to the list of all possible targets.
2279 This only makes sense for targets that should be activated using
2280 the "target TARGET_NAME ..." command.
2282 push_target: Make this target the top of the stack of currently used
2283 targets, within its particular stratum of the stack. Result
2284 is 0 if now atop the stack, nonzero if not on top (maybe
2287 unpush_target: Remove this from the stack of currently used targets,
2288 no matter where it is on the list. Returns 0 if no
2289 change, 1 if removed from stack. */
2291 extern void add_target (struct target_ops *);
2293 extern void add_target_with_completer (struct target_ops *t,
2294 completer_ftype *completer);
2296 extern void complete_target_initialization (struct target_ops *t);
2298 /* Adds a command ALIAS for target T and marks it deprecated. This is useful
2299 for maintaining backwards compatibility when renaming targets. */
2301 extern void add_deprecated_target_alias (struct target_ops *t,
2304 extern void push_target (struct target_ops *);
2306 extern int unpush_target (struct target_ops *);
2308 extern void target_pre_inferior (int);
2310 extern void target_preopen (int);
2312 /* Does whatever cleanup is required to get rid of all pushed targets. */
2313 extern void pop_all_targets (void);
2315 /* Like pop_all_targets, but pops only targets whose stratum is at or
2317 extern void pop_all_targets_at_and_above (enum strata stratum);
2319 /* Like pop_all_targets, but pops only targets whose stratum is
2320 strictly above ABOVE_STRATUM. */
2321 extern void pop_all_targets_above (enum strata above_stratum);
2323 extern int target_is_pushed (struct target_ops *t);
2325 extern CORE_ADDR target_translate_tls_address (struct objfile *objfile,
2328 /* Struct target_section maps address ranges to file sections. It is
2329 mostly used with BFD files, but can be used without (e.g. for handling
2330 raw disks, or files not in formats handled by BFD). */
2332 struct target_section
2334 CORE_ADDR addr; /* Lowest address in section */
2335 CORE_ADDR endaddr; /* 1+highest address in section */
2337 struct bfd_section *the_bfd_section;
2339 /* The "owner" of the section.
2340 It can be any unique value. It is set by add_target_sections
2341 and used by remove_target_sections.
2342 For example, for executables it is a pointer to exec_bfd and
2343 for shlibs it is the so_list pointer. */
2347 /* Holds an array of target sections. Defined by [SECTIONS..SECTIONS_END[. */
2349 struct target_section_table
2351 struct target_section *sections;
2352 struct target_section *sections_end;
2355 /* Return the "section" containing the specified address. */
2356 struct target_section *target_section_by_addr (struct target_ops *target,
2359 /* Return the target section table this target (or the targets
2360 beneath) currently manipulate. */
2362 extern struct target_section_table *target_get_section_table
2363 (struct target_ops *target);
2365 /* From mem-break.c */
2367 extern int memory_remove_breakpoint (struct target_ops *, struct gdbarch *,
2368 struct bp_target_info *,
2369 enum remove_bp_reason);
2371 extern int memory_insert_breakpoint (struct target_ops *, struct gdbarch *,
2372 struct bp_target_info *);
2374 /* Check whether the memory at the breakpoint's placed address still
2375 contains the expected breakpoint instruction. */
2377 extern int memory_validate_breakpoint (struct gdbarch *gdbarch,
2378 struct bp_target_info *bp_tgt);
2380 extern int default_memory_remove_breakpoint (struct gdbarch *,
2381 struct bp_target_info *);
2383 extern int default_memory_insert_breakpoint (struct gdbarch *,
2384 struct bp_target_info *);
2389 extern void initialize_targets (void);
2391 extern void noprocess (void) ATTRIBUTE_NORETURN;
2393 extern void target_require_runnable (void);
2395 extern struct target_ops *find_target_beneath (struct target_ops *);
2397 /* Find the target at STRATUM. If no target is at that stratum,
2400 struct target_ops *find_target_at (enum strata stratum);
2402 /* Read OS data object of type TYPE from the target, and return it in
2403 XML format. The result is NUL-terminated and returned as a string.
2404 If an error occurs or the transfer is unsupported, NULL is
2405 returned. Empty objects are returned as allocated but empty
2408 extern gdb::unique_xmalloc_ptr<char> target_get_osdata (const char *type);
2411 /* Stuff that should be shared among the various remote targets. */
2413 /* Debugging level. 0 is off, and non-zero values mean to print some debug
2414 information (higher values, more information). */
2415 extern int remote_debug;
2417 /* Speed in bits per second, or -1 which means don't mess with the speed. */
2418 extern int baud_rate;
2420 /* Parity for serial port */
2421 extern int serial_parity;
2423 /* Timeout limit for response from target. */
2424 extern int remote_timeout;
2428 /* Set the show memory breakpoints mode to show, and return a
2429 scoped_restore to restore it back to the current value. */
2430 extern scoped_restore_tmpl<int>
2431 make_scoped_restore_show_memory_breakpoints (int show);
2433 extern int may_write_registers;
2434 extern int may_write_memory;
2435 extern int may_insert_breakpoints;
2436 extern int may_insert_tracepoints;
2437 extern int may_insert_fast_tracepoints;
2438 extern int may_stop;
2440 extern void update_target_permissions (void);
2443 /* Imported from machine dependent code. */
2445 /* See to_supports_btrace in struct target_ops. */
2446 extern int target_supports_btrace (enum btrace_format);
2448 /* See to_enable_btrace in struct target_ops. */
2449 extern struct btrace_target_info *
2450 target_enable_btrace (ptid_t ptid, const struct btrace_config *);
2452 /* See to_disable_btrace in struct target_ops. */
2453 extern void target_disable_btrace (struct btrace_target_info *btinfo);
2455 /* See to_teardown_btrace in struct target_ops. */
2456 extern void target_teardown_btrace (struct btrace_target_info *btinfo);
2458 /* See to_read_btrace in struct target_ops. */
2459 extern enum btrace_error target_read_btrace (struct btrace_data *,
2460 struct btrace_target_info *,
2461 enum btrace_read_type);
2463 /* See to_btrace_conf in struct target_ops. */
2464 extern const struct btrace_config *
2465 target_btrace_conf (const struct btrace_target_info *);
2467 /* See to_stop_recording in struct target_ops. */
2468 extern void target_stop_recording (void);
2470 /* See to_save_record in struct target_ops. */
2471 extern void target_save_record (const char *filename);
2473 /* Query if the target supports deleting the execution log. */
2474 extern int target_supports_delete_record (void);
2476 /* See to_delete_record in struct target_ops. */
2477 extern void target_delete_record (void);
2479 /* See to_record_method. */
2480 extern enum record_method target_record_method (ptid_t ptid);
2482 /* See to_record_is_replaying in struct target_ops. */
2483 extern int target_record_is_replaying (ptid_t ptid);
2485 /* See to_record_will_replay in struct target_ops. */
2486 extern int target_record_will_replay (ptid_t ptid, int dir);
2488 /* See to_record_stop_replaying in struct target_ops. */
2489 extern void target_record_stop_replaying (void);
2491 /* See to_goto_record_begin in struct target_ops. */
2492 extern void target_goto_record_begin (void);
2494 /* See to_goto_record_end in struct target_ops. */
2495 extern void target_goto_record_end (void);
2497 /* See to_goto_record in struct target_ops. */
2498 extern void target_goto_record (ULONGEST insn);
2500 /* See to_insn_history. */
2501 extern void target_insn_history (int size, gdb_disassembly_flags flags);
2503 /* See to_insn_history_from. */
2504 extern void target_insn_history_from (ULONGEST from, int size,
2505 gdb_disassembly_flags flags);
2507 /* See to_insn_history_range. */
2508 extern void target_insn_history_range (ULONGEST begin, ULONGEST end,
2509 gdb_disassembly_flags flags);
2511 /* See to_call_history. */
2512 extern void target_call_history (int size, int flags);
2514 /* See to_call_history_from. */
2515 extern void target_call_history_from (ULONGEST begin, int size, int flags);
2517 /* See to_call_history_range. */
2518 extern void target_call_history_range (ULONGEST begin, ULONGEST end, int flags);
2520 /* See to_prepare_to_generate_core. */
2521 extern void target_prepare_to_generate_core (void);
2523 /* See to_done_generating_core. */
2524 extern void target_done_generating_core (void);
2527 namespace selftests {
2529 /* A mock process_stratum target_ops that doesn't read/write registers
2532 class test_target_ops : public target_ops
2537 } // namespace selftests
2538 #endif /* GDB_SELF_TEST */
2540 #endif /* !defined (TARGET_H) */