1 /* Interface between GDB and target environments, including files and processes
3 Copyright (C) 1990-2018 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 /* Traceframe info, in XML format. */
185 TARGET_OBJECT_TRACEFRAME_INFO
,
186 /* Load maps for FDPIC systems. */
188 /* Darwin dynamic linker info data. */
189 TARGET_OBJECT_DARWIN_DYLD_INFO
,
190 /* OpenVMS Unwind Information Block. */
191 TARGET_OBJECT_OPENVMS_UIB
,
192 /* Branch trace data, in XML format. */
193 TARGET_OBJECT_BTRACE
,
194 /* Branch trace configuration, in XML format. */
195 TARGET_OBJECT_BTRACE_CONF
,
196 /* The pathname of the executable file that was run to create
197 a specified process. ANNEX should be a string representation
198 of the process ID of the process in question, in hexadecimal
200 TARGET_OBJECT_EXEC_FILE
,
201 /* Possible future objects: TARGET_OBJECT_FILE, ... */
204 /* Possible values returned by target_xfer_partial, etc. */
206 enum target_xfer_status
208 /* Some bytes are transferred. */
211 /* No further transfer is possible. */
214 /* The piece of the object requested is unavailable. */
215 TARGET_XFER_UNAVAILABLE
= 2,
217 /* Generic I/O error. Note that it's important that this is '-1',
218 as we still have target_xfer-related code returning hardcoded
220 TARGET_XFER_E_IO
= -1,
222 /* Keep list in sync with target_xfer_status_to_string. */
225 /* Return the string form of STATUS. */
228 target_xfer_status_to_string (enum target_xfer_status status
);
230 typedef enum target_xfer_status
231 target_xfer_partial_ftype (struct target_ops
*ops
,
232 enum target_object object
,
235 const gdb_byte
*writebuf
,
238 ULONGEST
*xfered_len
);
240 enum target_xfer_status
241 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
242 const gdb_byte
*writebuf
, ULONGEST memaddr
,
243 LONGEST len
, ULONGEST
*xfered_len
);
245 /* Request that OPS transfer up to LEN addressable units of the target's
246 OBJECT. When reading from a memory object, the size of an addressable unit
247 is architecture dependent and can be found using
248 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is 1
249 byte long. BUF should point to a buffer large enough to hold the read data,
250 taking into account the addressable unit size. The OFFSET, for a seekable
251 object, specifies the starting point. The ANNEX can be used to provide
252 additional data-specific information to the target.
254 Return the number of addressable units actually transferred, or a negative
255 error code (an 'enum target_xfer_error' value) if the transfer is not
256 supported or otherwise fails. Return of a positive value less than
257 LEN indicates that no further transfer is possible. Unlike the raw
258 to_xfer_partial interface, callers of these functions do not need
259 to retry partial transfers. */
261 extern LONGEST
target_read (struct target_ops
*ops
,
262 enum target_object object
,
263 const char *annex
, gdb_byte
*buf
,
264 ULONGEST offset
, LONGEST len
);
266 struct memory_read_result
268 memory_read_result (ULONGEST begin_
, ULONGEST end_
,
269 gdb::unique_xmalloc_ptr
<gdb_byte
> &&data_
)
272 data (std::move (data_
))
276 ~memory_read_result () = default;
278 memory_read_result (memory_read_result
&&other
) = default;
280 DISABLE_COPY_AND_ASSIGN (memory_read_result
);
282 /* First address that was read. */
284 /* Past-the-end address. */
287 gdb::unique_xmalloc_ptr
<gdb_byte
> data
;
290 extern std::vector
<memory_read_result
> read_memory_robust
291 (struct target_ops
*ops
, const ULONGEST offset
, const LONGEST len
);
293 /* Request that OPS transfer up to LEN addressable units from BUF to the
294 target's OBJECT. When writing to a memory object, the addressable unit
295 size is architecture dependent and can be found using
296 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is 1
297 byte long. The OFFSET, for a seekable object, specifies the starting point.
298 The ANNEX can be used to provide additional data-specific information to
301 Return the number of addressable units actually transferred, or a negative
302 error code (an 'enum target_xfer_status' value) if the transfer is not
303 supported or otherwise fails. Return of a positive value less than
304 LEN indicates that no further transfer is possible. Unlike the raw
305 to_xfer_partial interface, callers of these functions do not need to
306 retry partial transfers. */
308 extern LONGEST
target_write (struct target_ops
*ops
,
309 enum target_object object
,
310 const char *annex
, const gdb_byte
*buf
,
311 ULONGEST offset
, LONGEST len
);
313 /* Similar to target_write, except that it also calls PROGRESS with
314 the number of bytes written and the opaque BATON after every
315 successful partial write (and before the first write). This is
316 useful for progress reporting and user interaction while writing
317 data. To abort the transfer, the progress callback can throw an
320 LONGEST
target_write_with_progress (struct target_ops
*ops
,
321 enum target_object object
,
322 const char *annex
, const gdb_byte
*buf
,
323 ULONGEST offset
, LONGEST len
,
324 void (*progress
) (ULONGEST
, void *),
327 /* Wrapper to perform a full read of unknown size. OBJECT/ANNEX will be read
328 using OPS. The return value will be uninstantiated if the transfer fails or
331 This method should be used for objects sufficiently small to store
332 in a single xmalloc'd buffer, when no fixed bound on the object's
333 size is known in advance. Don't try to read TARGET_OBJECT_MEMORY
334 through this function. */
336 extern gdb::optional
<gdb::byte_vector
> target_read_alloc
337 (struct target_ops
*ops
, enum target_object object
, const char *annex
);
339 /* Read OBJECT/ANNEX using OPS. The result is a NUL-terminated character vector
340 (therefore usable as a NUL-terminated string). If an error occurs or the
341 transfer is unsupported, the return value will be uninstantiated. Empty
342 objects are returned as allocated but empty strings. Therefore, on success,
343 the returned vector is guaranteed to have at least one element. A warning is
344 issued if the result contains any embedded NUL bytes. */
346 extern gdb::optional
<gdb::char_vector
> target_read_stralloc
347 (struct target_ops
*ops
, enum target_object object
, const char *annex
);
349 /* See target_ops->to_xfer_partial. */
350 extern target_xfer_partial_ftype target_xfer_partial
;
352 /* Wrappers to target read/write that perform memory transfers. They
353 throw an error if the memory transfer fails.
355 NOTE: cagney/2003-10-23: The naming schema is lifted from
356 "frame.h". The parameter order is lifted from get_frame_memory,
357 which in turn lifted it from read_memory. */
359 extern void get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
,
360 gdb_byte
*buf
, LONGEST len
);
361 extern ULONGEST
get_target_memory_unsigned (struct target_ops
*ops
,
362 CORE_ADDR addr
, int len
,
363 enum bfd_endian byte_order
);
365 struct thread_info
; /* fwd decl for parameter list below: */
367 /* The type of the callback to the to_async method. */
369 typedef void async_callback_ftype (enum inferior_event_type event_type
,
372 /* Normally target debug printing is purely type-based. However,
373 sometimes it is necessary to override the debug printing on a
374 per-argument basis. This macro can be used, attribute-style, to
375 name the target debug printing function for a particular method
376 argument. FUNC is the name of the function. The macro's
377 definition is empty because it is only used by the
378 make-target-delegates script. */
380 #define TARGET_DEBUG_PRINTER(FUNC)
382 /* These defines are used to mark target_ops methods. The script
383 make-target-delegates scans these and auto-generates the base
384 method implementations. There are four macros that can be used:
386 1. TARGET_DEFAULT_IGNORE. There is no argument. The base method
387 does nothing. This is only valid if the method return type is
390 2. TARGET_DEFAULT_NORETURN. The argument is a function call, like
391 'tcomplain ()'. The base method simply makes this call, which is
392 assumed not to return.
394 3. TARGET_DEFAULT_RETURN. The argument is a C expression. The
395 base method returns this expression's value.
397 4. TARGET_DEFAULT_FUNC. The argument is the name of a function.
398 make-target-delegates does not generate a base method in this case,
399 but instead uses the argument function as the base method. */
401 #define TARGET_DEFAULT_IGNORE()
402 #define TARGET_DEFAULT_NORETURN(ARG)
403 #define TARGET_DEFAULT_RETURN(ARG)
404 #define TARGET_DEFAULT_FUNC(ARG)
408 struct target_ops
*beneath
; /* To the target under this one. */
409 const char *to_shortname
; /* Name this target type */
410 const char *to_longname
; /* Name for printing */
411 const char *to_doc
; /* Documentation. Does not include trailing
412 newline, and starts with a one-line descrip-
413 tion (probably similar to to_longname). */
414 /* Per-target scratch pad. */
416 /* The open routine takes the rest of the parameters from the
417 command, and (if successful) pushes a new target onto the
418 stack. Targets should supply this routine, if only to provide
420 void (*to_open
) (const char *, int);
421 /* Old targets with a static target vector provide "to_close".
422 New re-entrant targets provide "to_xclose" and that is expected
423 to xfree everything (including the "struct target_ops"). */
424 void (*to_xclose
) (struct target_ops
*targ
);
425 void (*to_close
) (struct target_ops
*);
426 /* Attaches to a process on the target side. Arguments are as
427 passed to the `attach' command by the user. This routine can
428 be called when the target is not on the target-stack, if the
429 target_can_run routine returns 1; in that case, it must push
430 itself onto the stack. Upon exit, the target should be ready
431 for normal operations, and should be ready to deliver the
432 status of the process immediately (without waiting) to an
433 upcoming target_wait call. */
434 void (*to_attach
) (struct target_ops
*ops
, const char *, int);
435 void (*to_post_attach
) (struct target_ops
*, int)
436 TARGET_DEFAULT_IGNORE ();
437 void (*to_detach
) (struct target_ops
*ops
, inferior
*, int)
438 TARGET_DEFAULT_IGNORE ();
439 void (*to_disconnect
) (struct target_ops
*, const char *, int)
440 TARGET_DEFAULT_NORETURN (tcomplain ());
441 void (*to_resume
) (struct target_ops
*, ptid_t
,
442 int TARGET_DEBUG_PRINTER (target_debug_print_step
),
444 TARGET_DEFAULT_NORETURN (noprocess ());
445 void (*to_commit_resume
) (struct target_ops
*)
446 TARGET_DEFAULT_IGNORE ();
447 ptid_t (*to_wait
) (struct target_ops
*,
448 ptid_t
, struct target_waitstatus
*,
449 int TARGET_DEBUG_PRINTER (target_debug_print_options
))
450 TARGET_DEFAULT_FUNC (default_target_wait
);
451 void (*to_fetch_registers
) (struct target_ops
*, struct regcache
*, int)
452 TARGET_DEFAULT_IGNORE ();
453 void (*to_store_registers
) (struct target_ops
*, struct regcache
*, int)
454 TARGET_DEFAULT_NORETURN (noprocess ());
455 void (*to_prepare_to_store
) (struct target_ops
*, struct regcache
*)
456 TARGET_DEFAULT_NORETURN (noprocess ());
458 void (*to_files_info
) (struct target_ops
*)
459 TARGET_DEFAULT_IGNORE ();
460 int (*to_insert_breakpoint
) (struct target_ops
*, struct gdbarch
*,
461 struct bp_target_info
*)
462 TARGET_DEFAULT_FUNC (memory_insert_breakpoint
);
463 int (*to_remove_breakpoint
) (struct target_ops
*, struct gdbarch
*,
464 struct bp_target_info
*,
465 enum remove_bp_reason
)
466 TARGET_DEFAULT_FUNC (memory_remove_breakpoint
);
468 /* Returns true if the target stopped because it executed a
469 software breakpoint. This is necessary for correct background
470 execution / non-stop mode operation, and for correct PC
471 adjustment on targets where the PC needs to be adjusted when a
472 software breakpoint triggers. In these modes, by the time GDB
473 processes a breakpoint event, the breakpoint may already be
474 done from the target, so GDB needs to be able to tell whether
475 it should ignore the event and whether it should adjust the PC.
476 See adjust_pc_after_break. */
477 int (*to_stopped_by_sw_breakpoint
) (struct target_ops
*)
478 TARGET_DEFAULT_RETURN (0);
479 /* Returns true if the above method is supported. */
480 int (*to_supports_stopped_by_sw_breakpoint
) (struct target_ops
*)
481 TARGET_DEFAULT_RETURN (0);
483 /* Returns true if the target stopped for a hardware breakpoint.
484 Likewise, if the target supports hardware breakpoints, this
485 method is necessary for correct background execution / non-stop
486 mode operation. Even though hardware breakpoints do not
487 require PC adjustment, GDB needs to be able to tell whether the
488 hardware breakpoint event is a delayed event for a breakpoint
489 that is already gone and should thus be ignored. */
490 int (*to_stopped_by_hw_breakpoint
) (struct target_ops
*)
491 TARGET_DEFAULT_RETURN (0);
492 /* Returns true if the above method is supported. */
493 int (*to_supports_stopped_by_hw_breakpoint
) (struct target_ops
*)
494 TARGET_DEFAULT_RETURN (0);
496 int (*to_can_use_hw_breakpoint
) (struct target_ops
*,
497 enum bptype
, int, int)
498 TARGET_DEFAULT_RETURN (0);
499 int (*to_ranged_break_num_registers
) (struct target_ops
*)
500 TARGET_DEFAULT_RETURN (-1);
501 int (*to_insert_hw_breakpoint
) (struct target_ops
*,
502 struct gdbarch
*, struct bp_target_info
*)
503 TARGET_DEFAULT_RETURN (-1);
504 int (*to_remove_hw_breakpoint
) (struct target_ops
*,
505 struct gdbarch
*, struct bp_target_info
*)
506 TARGET_DEFAULT_RETURN (-1);
508 /* Documentation of what the two routines below are expected to do is
509 provided with the corresponding target_* macros. */
510 int (*to_remove_watchpoint
) (struct target_ops
*, CORE_ADDR
, int,
511 enum target_hw_bp_type
, struct expression
*)
512 TARGET_DEFAULT_RETURN (-1);
513 int (*to_insert_watchpoint
) (struct target_ops
*, CORE_ADDR
, int,
514 enum target_hw_bp_type
, struct expression
*)
515 TARGET_DEFAULT_RETURN (-1);
517 int (*to_insert_mask_watchpoint
) (struct target_ops
*,
518 CORE_ADDR
, CORE_ADDR
,
519 enum target_hw_bp_type
)
520 TARGET_DEFAULT_RETURN (1);
521 int (*to_remove_mask_watchpoint
) (struct target_ops
*,
522 CORE_ADDR
, CORE_ADDR
,
523 enum target_hw_bp_type
)
524 TARGET_DEFAULT_RETURN (1);
525 int (*to_stopped_by_watchpoint
) (struct target_ops
*)
526 TARGET_DEFAULT_RETURN (0);
527 int to_have_steppable_watchpoint
;
528 int to_have_continuable_watchpoint
;
529 int (*to_stopped_data_address
) (struct target_ops
*, CORE_ADDR
*)
530 TARGET_DEFAULT_RETURN (0);
531 int (*to_watchpoint_addr_within_range
) (struct target_ops
*,
532 CORE_ADDR
, CORE_ADDR
, int)
533 TARGET_DEFAULT_FUNC (default_watchpoint_addr_within_range
);
535 /* Documentation of this routine is provided with the corresponding
537 int (*to_region_ok_for_hw_watchpoint
) (struct target_ops
*,
539 TARGET_DEFAULT_FUNC (default_region_ok_for_hw_watchpoint
);
541 int (*to_can_accel_watchpoint_condition
) (struct target_ops
*,
544 TARGET_DEFAULT_RETURN (0);
545 int (*to_masked_watch_num_registers
) (struct target_ops
*,
546 CORE_ADDR
, CORE_ADDR
)
547 TARGET_DEFAULT_RETURN (-1);
549 /* Return 1 for sure target can do single step. Return -1 for
550 unknown. Return 0 for target can't do. */
551 int (*to_can_do_single_step
) (struct target_ops
*)
552 TARGET_DEFAULT_RETURN (-1);
554 void (*to_terminal_init
) (struct target_ops
*)
555 TARGET_DEFAULT_IGNORE ();
556 void (*to_terminal_inferior
) (struct target_ops
*)
557 TARGET_DEFAULT_IGNORE ();
558 void (*to_terminal_save_inferior
) (struct target_ops
*)
559 TARGET_DEFAULT_IGNORE ();
560 void (*to_terminal_ours_for_output
) (struct target_ops
*)
561 TARGET_DEFAULT_IGNORE ();
562 void (*to_terminal_ours
) (struct target_ops
*)
563 TARGET_DEFAULT_IGNORE ();
564 void (*to_terminal_info
) (struct target_ops
*, const char *, int)
565 TARGET_DEFAULT_FUNC (default_terminal_info
);
566 void (*to_kill
) (struct target_ops
*)
567 TARGET_DEFAULT_NORETURN (noprocess ());
568 void (*to_load
) (struct target_ops
*, const char *, int)
569 TARGET_DEFAULT_NORETURN (tcomplain ());
570 /* Start an inferior process and set inferior_ptid to its pid.
571 EXEC_FILE is the file to run.
572 ALLARGS is a string containing the arguments to the program.
573 ENV is the environment vector to pass. Errors reported with error().
574 On VxWorks and various standalone systems, we ignore exec_file. */
575 void (*to_create_inferior
) (struct target_ops
*,
576 const char *, const std::string
&,
578 void (*to_post_startup_inferior
) (struct target_ops
*, ptid_t
)
579 TARGET_DEFAULT_IGNORE ();
580 int (*to_insert_fork_catchpoint
) (struct target_ops
*, int)
581 TARGET_DEFAULT_RETURN (1);
582 int (*to_remove_fork_catchpoint
) (struct target_ops
*, int)
583 TARGET_DEFAULT_RETURN (1);
584 int (*to_insert_vfork_catchpoint
) (struct target_ops
*, int)
585 TARGET_DEFAULT_RETURN (1);
586 int (*to_remove_vfork_catchpoint
) (struct target_ops
*, int)
587 TARGET_DEFAULT_RETURN (1);
588 int (*to_follow_fork
) (struct target_ops
*, int, int)
589 TARGET_DEFAULT_FUNC (default_follow_fork
);
590 int (*to_insert_exec_catchpoint
) (struct target_ops
*, int)
591 TARGET_DEFAULT_RETURN (1);
592 int (*to_remove_exec_catchpoint
) (struct target_ops
*, int)
593 TARGET_DEFAULT_RETURN (1);
594 void (*to_follow_exec
) (struct target_ops
*, struct inferior
*, char *)
595 TARGET_DEFAULT_IGNORE ();
596 int (*to_set_syscall_catchpoint
) (struct target_ops
*,
598 gdb::array_view
<const int>)
599 TARGET_DEFAULT_RETURN (1);
600 void (*to_mourn_inferior
) (struct target_ops
*)
601 TARGET_DEFAULT_FUNC (default_mourn_inferior
);
602 /* Note that to_can_run is special and can be invoked on an
603 unpushed target. Targets defining this method must also define
604 to_can_async_p and to_supports_non_stop. */
605 int (*to_can_run
) (struct target_ops
*)
606 TARGET_DEFAULT_RETURN (0);
608 /* Documentation of this routine is provided with the corresponding
610 void (*to_pass_signals
) (struct target_ops
*, int,
611 unsigned char * TARGET_DEBUG_PRINTER (target_debug_print_signals
))
612 TARGET_DEFAULT_IGNORE ();
614 /* Documentation of this routine is provided with the
615 corresponding target_* function. */
616 void (*to_program_signals
) (struct target_ops
*, int,
617 unsigned char * TARGET_DEBUG_PRINTER (target_debug_print_signals
))
618 TARGET_DEFAULT_IGNORE ();
620 int (*to_thread_alive
) (struct target_ops
*, ptid_t ptid
)
621 TARGET_DEFAULT_RETURN (0);
622 void (*to_update_thread_list
) (struct target_ops
*)
623 TARGET_DEFAULT_IGNORE ();
624 const char *(*to_pid_to_str
) (struct target_ops
*, ptid_t
)
625 TARGET_DEFAULT_FUNC (default_pid_to_str
);
626 const char *(*to_extra_thread_info
) (struct target_ops
*, struct thread_info
*)
627 TARGET_DEFAULT_RETURN (NULL
);
628 const char *(*to_thread_name
) (struct target_ops
*, struct thread_info
*)
629 TARGET_DEFAULT_RETURN (NULL
);
630 struct thread_info
*(*to_thread_handle_to_thread_info
) (struct target_ops
*,
633 struct inferior
*inf
)
634 TARGET_DEFAULT_RETURN (NULL
);
635 void (*to_stop
) (struct target_ops
*, ptid_t
)
636 TARGET_DEFAULT_IGNORE ();
637 void (*to_interrupt
) (struct target_ops
*)
638 TARGET_DEFAULT_IGNORE ();
639 void (*to_pass_ctrlc
) (struct target_ops
*)
640 TARGET_DEFAULT_FUNC (default_target_pass_ctrlc
);
641 void (*to_rcmd
) (struct target_ops
*,
642 const char *command
, struct ui_file
*output
)
643 TARGET_DEFAULT_FUNC (default_rcmd
);
644 char *(*to_pid_to_exec_file
) (struct target_ops
*, int pid
)
645 TARGET_DEFAULT_RETURN (NULL
);
646 void (*to_log_command
) (struct target_ops
*, const char *)
647 TARGET_DEFAULT_IGNORE ();
648 struct target_section_table
*(*to_get_section_table
) (struct target_ops
*)
649 TARGET_DEFAULT_RETURN (NULL
);
650 enum strata to_stratum
;
651 int (*to_has_all_memory
) (struct target_ops
*);
652 int (*to_has_memory
) (struct target_ops
*);
653 int (*to_has_stack
) (struct target_ops
*);
654 int (*to_has_registers
) (struct target_ops
*);
655 int (*to_has_execution
) (struct target_ops
*, ptid_t
);
656 int to_has_thread_control
; /* control thread execution */
657 int to_attach_no_wait
;
658 /* This method must be implemented in some situations. See the
659 comment on 'to_can_run'. */
660 int (*to_can_async_p
) (struct target_ops
*)
661 TARGET_DEFAULT_RETURN (0);
662 int (*to_is_async_p
) (struct target_ops
*)
663 TARGET_DEFAULT_RETURN (0);
664 void (*to_async
) (struct target_ops
*, int)
665 TARGET_DEFAULT_NORETURN (tcomplain ());
666 void (*to_thread_events
) (struct target_ops
*, int)
667 TARGET_DEFAULT_IGNORE ();
668 /* This method must be implemented in some situations. See the
669 comment on 'to_can_run'. */
670 int (*to_supports_non_stop
) (struct target_ops
*)
671 TARGET_DEFAULT_RETURN (0);
672 /* Return true if the target operates in non-stop mode even with
673 "set non-stop off". */
674 int (*to_always_non_stop_p
) (struct target_ops
*)
675 TARGET_DEFAULT_RETURN (0);
676 /* find_memory_regions support method for gcore */
677 int (*to_find_memory_regions
) (struct target_ops
*,
678 find_memory_region_ftype func
, void *data
)
679 TARGET_DEFAULT_FUNC (dummy_find_memory_regions
);
680 /* make_corefile_notes support method for gcore */
681 char * (*to_make_corefile_notes
) (struct target_ops
*, bfd
*, int *)
682 TARGET_DEFAULT_FUNC (dummy_make_corefile_notes
);
683 /* get_bookmark support method for bookmarks */
684 gdb_byte
* (*to_get_bookmark
) (struct target_ops
*, const char *, int)
685 TARGET_DEFAULT_NORETURN (tcomplain ());
686 /* goto_bookmark support method for bookmarks */
687 void (*to_goto_bookmark
) (struct target_ops
*, const gdb_byte
*, int)
688 TARGET_DEFAULT_NORETURN (tcomplain ());
689 /* Return the thread-local address at OFFSET in the
690 thread-local storage for the thread PTID and the shared library
691 or executable file given by OBJFILE. If that block of
692 thread-local storage hasn't been allocated yet, this function
693 may return an error. LOAD_MODULE_ADDR may be zero for statically
694 linked multithreaded inferiors. */
695 CORE_ADDR (*to_get_thread_local_address
) (struct target_ops
*ops
,
697 CORE_ADDR load_module_addr
,
699 TARGET_DEFAULT_NORETURN (generic_tls_error ());
701 /* Request that OPS transfer up to LEN addressable units of the target's
702 OBJECT. When reading from a memory object, the size of an addressable
703 unit is architecture dependent and can be found using
704 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is
705 1 byte long. The OFFSET, for a seekable object, specifies the
706 starting point. The ANNEX can be used to provide additional
707 data-specific information to the target.
709 Return the transferred status, error or OK (an
710 'enum target_xfer_status' value). Save the number of addressable units
711 actually transferred in *XFERED_LEN if transfer is successful
712 (TARGET_XFER_OK) or the number unavailable units if the requested
713 data is unavailable (TARGET_XFER_UNAVAILABLE). *XFERED_LEN
714 smaller than LEN does not indicate the end of the object, only
715 the end of the transfer; higher level code should continue
716 transferring if desired. This is handled in target.c.
718 The interface does not support a "retry" mechanism. Instead it
719 assumes that at least one addressable unit will be transfered on each
722 NOTE: cagney/2003-10-17: The current interface can lead to
723 fragmented transfers. Lower target levels should not implement
724 hacks, such as enlarging the transfer, in an attempt to
725 compensate for this. Instead, the target stack should be
726 extended so that it implements supply/collect methods and a
727 look-aside object cache. With that available, the lowest
728 target can safely and freely "push" data up the stack.
730 See target_read and target_write for more information. One,
731 and only one, of readbuf or writebuf must be non-NULL. */
733 enum target_xfer_status (*to_xfer_partial
) (struct target_ops
*ops
,
734 enum target_object object
,
737 const gdb_byte
*writebuf
,
738 ULONGEST offset
, ULONGEST len
,
739 ULONGEST
*xfered_len
)
740 TARGET_DEFAULT_RETURN (TARGET_XFER_E_IO
);
742 /* Return the limit on the size of any single memory transfer
745 ULONGEST (*to_get_memory_xfer_limit
) (struct target_ops
*)
746 TARGET_DEFAULT_RETURN (ULONGEST_MAX
);
748 /* Returns the memory map for the target. A return value of NULL
749 means that no memory map is available. If a memory address
750 does not fall within any returned regions, it's assumed to be
751 RAM. The returned memory regions should not overlap.
753 The order of regions does not matter; target_memory_map will
754 sort regions by starting address. For that reason, this
755 function should not be called directly except via
758 This method should not cache data; if the memory map could
759 change unexpectedly, it should be invalidated, and higher
760 layers will re-fetch it. */
761 std::vector
<mem_region
> (*to_memory_map
) (struct target_ops
*)
762 TARGET_DEFAULT_RETURN (std::vector
<mem_region
> ());
764 /* Erases the region of flash memory starting at ADDRESS, of
767 Precondition: both ADDRESS and ADDRESS+LENGTH should be aligned
768 on flash block boundaries, as reported by 'to_memory_map'. */
769 void (*to_flash_erase
) (struct target_ops
*,
770 ULONGEST address
, LONGEST length
)
771 TARGET_DEFAULT_NORETURN (tcomplain ());
773 /* Finishes a flash memory write sequence. After this operation
774 all flash memory should be available for writing and the result
775 of reading from areas written by 'to_flash_write' should be
776 equal to what was written. */
777 void (*to_flash_done
) (struct target_ops
*)
778 TARGET_DEFAULT_NORETURN (tcomplain ());
780 /* Describe the architecture-specific features of this target. If
781 OPS doesn't have a description, this should delegate to the
782 "beneath" target. Returns the description found, or NULL if no
783 description was available. */
784 const struct target_desc
*(*to_read_description
) (struct target_ops
*ops
)
785 TARGET_DEFAULT_RETURN (NULL
);
787 /* Build the PTID of the thread on which a given task is running,
788 based on LWP and THREAD. These values are extracted from the
789 task Private_Data section of the Ada Task Control Block, and
790 their interpretation depends on the target. */
791 ptid_t (*to_get_ada_task_ptid
) (struct target_ops
*,
792 long lwp
, long thread
)
793 TARGET_DEFAULT_FUNC (default_get_ada_task_ptid
);
795 /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
796 Return 0 if *READPTR is already at the end of the buffer.
797 Return -1 if there is insufficient buffer for a whole entry.
798 Return 1 if an entry was read into *TYPEP and *VALP. */
799 int (*to_auxv_parse
) (struct target_ops
*ops
, gdb_byte
**readptr
,
800 gdb_byte
*endptr
, CORE_ADDR
*typep
, CORE_ADDR
*valp
)
801 TARGET_DEFAULT_FUNC (default_auxv_parse
);
803 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
804 sequence of bytes in PATTERN with length PATTERN_LEN.
806 The result is 1 if found, 0 if not found, and -1 if there was an error
807 requiring halting of the search (e.g. memory read error).
808 If the pattern is found the address is recorded in FOUND_ADDRP. */
809 int (*to_search_memory
) (struct target_ops
*ops
,
810 CORE_ADDR start_addr
, ULONGEST search_space_len
,
811 const gdb_byte
*pattern
, ULONGEST pattern_len
,
812 CORE_ADDR
*found_addrp
)
813 TARGET_DEFAULT_FUNC (default_search_memory
);
815 /* Can target execute in reverse? */
816 int (*to_can_execute_reverse
) (struct target_ops
*)
817 TARGET_DEFAULT_RETURN (0);
819 /* The direction the target is currently executing. Must be
820 implemented on targets that support reverse execution and async
821 mode. The default simply returns forward execution. */
822 enum exec_direction_kind (*to_execution_direction
) (struct target_ops
*)
823 TARGET_DEFAULT_FUNC (default_execution_direction
);
825 /* Does this target support debugging multiple processes
827 int (*to_supports_multi_process
) (struct target_ops
*)
828 TARGET_DEFAULT_RETURN (0);
830 /* Does this target support enabling and disabling tracepoints while a trace
831 experiment is running? */
832 int (*to_supports_enable_disable_tracepoint
) (struct target_ops
*)
833 TARGET_DEFAULT_RETURN (0);
835 /* Does this target support disabling address space randomization? */
836 int (*to_supports_disable_randomization
) (struct target_ops
*);
838 /* Does this target support the tracenz bytecode for string collection? */
839 int (*to_supports_string_tracing
) (struct target_ops
*)
840 TARGET_DEFAULT_RETURN (0);
842 /* Does this target support evaluation of breakpoint conditions on its
844 int (*to_supports_evaluation_of_breakpoint_conditions
) (struct target_ops
*)
845 TARGET_DEFAULT_RETURN (0);
847 /* Does this target support evaluation of breakpoint commands on its
849 int (*to_can_run_breakpoint_commands
) (struct target_ops
*)
850 TARGET_DEFAULT_RETURN (0);
852 /* Determine current architecture of thread PTID.
854 The target is supposed to determine the architecture of the code where
855 the target is currently stopped at (on Cell, if a target is in spu_run,
856 to_thread_architecture would return SPU, otherwise PPC32 or PPC64).
857 This is architecture used to perform decr_pc_after_break adjustment,
858 and also determines the frame architecture of the innermost frame.
859 ptrace operations need to operate according to target_gdbarch ().
861 The default implementation always returns target_gdbarch (). */
862 struct gdbarch
*(*to_thread_architecture
) (struct target_ops
*, ptid_t
)
863 TARGET_DEFAULT_FUNC (default_thread_architecture
);
865 /* Determine current address space of thread PTID.
867 The default implementation always returns the inferior's
869 struct address_space
*(*to_thread_address_space
) (struct target_ops
*,
871 TARGET_DEFAULT_FUNC (default_thread_address_space
);
873 /* Target file operations. */
875 /* Return nonzero if the filesystem seen by the current inferior
876 is the local filesystem, zero otherwise. */
877 int (*to_filesystem_is_local
) (struct target_ops
*)
878 TARGET_DEFAULT_RETURN (1);
880 /* Open FILENAME on the target, in the filesystem as seen by INF,
881 using FLAGS and MODE. If INF is NULL, use the filesystem seen
882 by the debugger (GDB or, for remote targets, the remote stub).
883 If WARN_IF_SLOW is nonzero, print a warning message if the file
884 is being accessed over a link that may be slow. Return a
885 target file descriptor, or -1 if an error occurs (and set
887 int (*to_fileio_open
) (struct target_ops
*,
888 struct inferior
*inf
, const char *filename
,
889 int flags
, int mode
, int warn_if_slow
,
892 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
893 Return the number of bytes written, or -1 if an error occurs
894 (and set *TARGET_ERRNO). */
895 int (*to_fileio_pwrite
) (struct target_ops
*,
896 int fd
, const gdb_byte
*write_buf
, int len
,
897 ULONGEST offset
, int *target_errno
);
899 /* Read up to LEN bytes FD on the target into READ_BUF.
900 Return the number of bytes read, or -1 if an error occurs
901 (and set *TARGET_ERRNO). */
902 int (*to_fileio_pread
) (struct target_ops
*,
903 int fd
, gdb_byte
*read_buf
, int len
,
904 ULONGEST offset
, int *target_errno
);
906 /* Get information about the file opened as FD and put it in
907 SB. Return 0 on success, or -1 if an error occurs (and set
909 int (*to_fileio_fstat
) (struct target_ops
*,
910 int fd
, struct stat
*sb
, int *target_errno
);
912 /* Close FD on the target. Return 0, or -1 if an error occurs
913 (and set *TARGET_ERRNO). */
914 int (*to_fileio_close
) (struct target_ops
*, int fd
, int *target_errno
);
916 /* Unlink FILENAME on the target, in the filesystem as seen by
917 INF. If INF is NULL, use the filesystem seen by the debugger
918 (GDB or, for remote targets, the remote stub). Return 0, or
919 -1 if an error occurs (and set *TARGET_ERRNO). */
920 int (*to_fileio_unlink
) (struct target_ops
*,
921 struct inferior
*inf
,
922 const char *filename
,
925 /* Read value of symbolic link FILENAME on the target, in the
926 filesystem as seen by INF. If INF is NULL, use the filesystem
927 seen by the debugger (GDB or, for remote targets, the remote
928 stub). Return a string, or an empty optional if an error
929 occurs (and set *TARGET_ERRNO). */
930 gdb::optional
<std::string
> (*to_fileio_readlink
) (struct target_ops
*,
931 struct inferior
*inf
,
932 const char *filename
,
936 /* Implement the "info proc" command. */
937 void (*to_info_proc
) (struct target_ops
*, const char *,
938 enum info_proc_what
);
940 /* Tracepoint-related operations. */
942 /* Prepare the target for a tracing run. */
943 void (*to_trace_init
) (struct target_ops
*)
944 TARGET_DEFAULT_NORETURN (tcomplain ());
946 /* Send full details of a tracepoint location to the target. */
947 void (*to_download_tracepoint
) (struct target_ops
*,
948 struct bp_location
*location
)
949 TARGET_DEFAULT_NORETURN (tcomplain ());
951 /* Is the target able to download tracepoint locations in current
953 int (*to_can_download_tracepoint
) (struct target_ops
*)
954 TARGET_DEFAULT_RETURN (0);
956 /* Send full details of a trace state variable to the target. */
957 void (*to_download_trace_state_variable
) (struct target_ops
*,
958 const trace_state_variable
&tsv
)
959 TARGET_DEFAULT_NORETURN (tcomplain ());
961 /* Enable a tracepoint on the target. */
962 void (*to_enable_tracepoint
) (struct target_ops
*,
963 struct bp_location
*location
)
964 TARGET_DEFAULT_NORETURN (tcomplain ());
966 /* Disable a tracepoint on the target. */
967 void (*to_disable_tracepoint
) (struct target_ops
*,
968 struct bp_location
*location
)
969 TARGET_DEFAULT_NORETURN (tcomplain ());
971 /* Inform the target info of memory regions that are readonly
972 (such as text sections), and so it should return data from
973 those rather than look in the trace buffer. */
974 void (*to_trace_set_readonly_regions
) (struct target_ops
*)
975 TARGET_DEFAULT_NORETURN (tcomplain ());
977 /* Start a trace run. */
978 void (*to_trace_start
) (struct target_ops
*)
979 TARGET_DEFAULT_NORETURN (tcomplain ());
981 /* Get the current status of a tracing run. */
982 int (*to_get_trace_status
) (struct target_ops
*, struct trace_status
*ts
)
983 TARGET_DEFAULT_RETURN (-1);
985 void (*to_get_tracepoint_status
) (struct target_ops
*,
986 struct breakpoint
*tp
,
987 struct uploaded_tp
*utp
)
988 TARGET_DEFAULT_NORETURN (tcomplain ());
990 /* Stop a trace run. */
991 void (*to_trace_stop
) (struct target_ops
*)
992 TARGET_DEFAULT_NORETURN (tcomplain ());
994 /* Ask the target to find a trace frame of the given type TYPE,
995 using NUM, ADDR1, and ADDR2 as search parameters. Returns the
996 number of the trace frame, and also the tracepoint number at
997 TPP. If no trace frame matches, return -1. May throw if the
999 int (*to_trace_find
) (struct target_ops
*,
1000 enum trace_find_type type
, int num
,
1001 CORE_ADDR addr1
, CORE_ADDR addr2
, int *tpp
)
1002 TARGET_DEFAULT_RETURN (-1);
1004 /* Get the value of the trace state variable number TSV, returning
1005 1 if the value is known and writing the value itself into the
1006 location pointed to by VAL, else returning 0. */
1007 int (*to_get_trace_state_variable_value
) (struct target_ops
*,
1008 int tsv
, LONGEST
*val
)
1009 TARGET_DEFAULT_RETURN (0);
1011 int (*to_save_trace_data
) (struct target_ops
*, const char *filename
)
1012 TARGET_DEFAULT_NORETURN (tcomplain ());
1014 int (*to_upload_tracepoints
) (struct target_ops
*,
1015 struct uploaded_tp
**utpp
)
1016 TARGET_DEFAULT_RETURN (0);
1018 int (*to_upload_trace_state_variables
) (struct target_ops
*,
1019 struct uploaded_tsv
**utsvp
)
1020 TARGET_DEFAULT_RETURN (0);
1022 LONGEST (*to_get_raw_trace_data
) (struct target_ops
*, gdb_byte
*buf
,
1023 ULONGEST offset
, LONGEST len
)
1024 TARGET_DEFAULT_NORETURN (tcomplain ());
1026 /* Get the minimum length of instruction on which a fast tracepoint
1027 may be set on the target. If this operation is unsupported,
1028 return -1. If for some reason the minimum length cannot be
1029 determined, return 0. */
1030 int (*to_get_min_fast_tracepoint_insn_len
) (struct target_ops
*)
1031 TARGET_DEFAULT_RETURN (-1);
1033 /* Set the target's tracing behavior in response to unexpected
1034 disconnection - set VAL to 1 to keep tracing, 0 to stop. */
1035 void (*to_set_disconnected_tracing
) (struct target_ops
*, int val
)
1036 TARGET_DEFAULT_IGNORE ();
1037 void (*to_set_circular_trace_buffer
) (struct target_ops
*, int val
)
1038 TARGET_DEFAULT_IGNORE ();
1039 /* Set the size of trace buffer in the target. */
1040 void (*to_set_trace_buffer_size
) (struct target_ops
*, LONGEST val
)
1041 TARGET_DEFAULT_IGNORE ();
1043 /* Add/change textual notes about the trace run, returning 1 if
1044 successful, 0 otherwise. */
1045 int (*to_set_trace_notes
) (struct target_ops
*,
1046 const char *user
, const char *notes
,
1047 const char *stopnotes
)
1048 TARGET_DEFAULT_RETURN (0);
1050 /* Return the processor core that thread PTID was last seen on.
1051 This information is updated only when:
1052 - update_thread_list is called
1054 If the core cannot be determined -- either for the specified
1055 thread, or right now, or in this debug session, or for this
1056 target -- return -1. */
1057 int (*to_core_of_thread
) (struct target_ops
*, ptid_t ptid
)
1058 TARGET_DEFAULT_RETURN (-1);
1060 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range
1061 matches the contents of [DATA,DATA+SIZE). Returns 1 if there's
1062 a match, 0 if there's a mismatch, and -1 if an error is
1063 encountered while reading memory. */
1064 int (*to_verify_memory
) (struct target_ops
*, const gdb_byte
*data
,
1065 CORE_ADDR memaddr
, ULONGEST size
)
1066 TARGET_DEFAULT_FUNC (default_verify_memory
);
1068 /* Return the address of the start of the Thread Information Block
1069 a Windows OS specific feature. */
1070 int (*to_get_tib_address
) (struct target_ops
*,
1071 ptid_t ptid
, CORE_ADDR
*addr
)
1072 TARGET_DEFAULT_NORETURN (tcomplain ());
1074 /* Send the new settings of write permission variables. */
1075 void (*to_set_permissions
) (struct target_ops
*)
1076 TARGET_DEFAULT_IGNORE ();
1078 /* Look for a static tracepoint marker at ADDR, and fill in MARKER
1079 with its details. Return true on success, false on failure. */
1080 bool (*to_static_tracepoint_marker_at
) (struct target_ops
*, CORE_ADDR
,
1081 static_tracepoint_marker
*marker
)
1082 TARGET_DEFAULT_RETURN (false);
1084 /* Return a vector of all tracepoints markers string id ID, or all
1085 markers if ID is NULL. */
1086 std::vector
<static_tracepoint_marker
>
1087 (*to_static_tracepoint_markers_by_strid
) (struct target_ops
*,
1089 TARGET_DEFAULT_NORETURN (tcomplain ());
1091 /* Return a traceframe info object describing the current
1092 traceframe's contents. This method should not cache data;
1093 higher layers take care of caching, invalidating, and
1094 re-fetching when necessary. */
1095 traceframe_info_up (*to_traceframe_info
) (struct target_ops
*)
1096 TARGET_DEFAULT_NORETURN (tcomplain ());
1098 /* Ask the target to use or not to use agent according to USE. Return 1
1099 successful, 0 otherwise. */
1100 int (*to_use_agent
) (struct target_ops
*, int use
)
1101 TARGET_DEFAULT_NORETURN (tcomplain ());
1103 /* Is the target able to use agent in current state? */
1104 int (*to_can_use_agent
) (struct target_ops
*)
1105 TARGET_DEFAULT_RETURN (0);
1107 /* Enable branch tracing for PTID using CONF configuration.
1108 Return a branch trace target information struct for reading and for
1109 disabling branch trace. */
1110 struct btrace_target_info
*(*to_enable_btrace
) (struct target_ops
*,
1112 const struct btrace_config
*conf
)
1113 TARGET_DEFAULT_NORETURN (tcomplain ());
1115 /* Disable branch tracing and deallocate TINFO. */
1116 void (*to_disable_btrace
) (struct target_ops
*,
1117 struct btrace_target_info
*tinfo
)
1118 TARGET_DEFAULT_NORETURN (tcomplain ());
1120 /* Disable branch tracing and deallocate TINFO. This function is similar
1121 to to_disable_btrace, except that it is called during teardown and is
1122 only allowed to perform actions that are safe. A counter-example would
1123 be attempting to talk to a remote target. */
1124 void (*to_teardown_btrace
) (struct target_ops
*,
1125 struct btrace_target_info
*tinfo
)
1126 TARGET_DEFAULT_NORETURN (tcomplain ());
1128 /* Read branch trace data for the thread indicated by BTINFO into DATA.
1129 DATA is cleared before new trace is added. */
1130 enum btrace_error (*to_read_btrace
) (struct target_ops
*self
,
1131 struct btrace_data
*data
,
1132 struct btrace_target_info
*btinfo
,
1133 enum btrace_read_type type
)
1134 TARGET_DEFAULT_NORETURN (tcomplain ());
1136 /* Get the branch trace configuration. */
1137 const struct btrace_config
*(*to_btrace_conf
) (struct target_ops
*self
,
1138 const struct btrace_target_info
*)
1139 TARGET_DEFAULT_RETURN (NULL
);
1141 /* Current recording method. */
1142 enum record_method (*to_record_method
) (struct target_ops
*, ptid_t ptid
)
1143 TARGET_DEFAULT_RETURN (RECORD_METHOD_NONE
);
1145 /* Stop trace recording. */
1146 void (*to_stop_recording
) (struct target_ops
*)
1147 TARGET_DEFAULT_IGNORE ();
1149 /* Print information about the recording. */
1150 void (*to_info_record
) (struct target_ops
*)
1151 TARGET_DEFAULT_IGNORE ();
1153 /* Save the recorded execution trace into a file. */
1154 void (*to_save_record
) (struct target_ops
*, const char *filename
)
1155 TARGET_DEFAULT_NORETURN (tcomplain ());
1157 /* Delete the recorded execution trace from the current position
1159 void (*to_delete_record
) (struct target_ops
*)
1160 TARGET_DEFAULT_NORETURN (tcomplain ());
1162 /* Query if the record target is currently replaying PTID. */
1163 int (*to_record_is_replaying
) (struct target_ops
*, ptid_t ptid
)
1164 TARGET_DEFAULT_RETURN (0);
1166 /* Query if the record target will replay PTID if it were resumed in
1167 execution direction DIR. */
1168 int (*to_record_will_replay
) (struct target_ops
*, ptid_t ptid
, int dir
)
1169 TARGET_DEFAULT_RETURN (0);
1171 /* Stop replaying. */
1172 void (*to_record_stop_replaying
) (struct target_ops
*)
1173 TARGET_DEFAULT_IGNORE ();
1175 /* Go to the begin of the execution trace. */
1176 void (*to_goto_record_begin
) (struct target_ops
*)
1177 TARGET_DEFAULT_NORETURN (tcomplain ());
1179 /* Go to the end of the execution trace. */
1180 void (*to_goto_record_end
) (struct target_ops
*)
1181 TARGET_DEFAULT_NORETURN (tcomplain ());
1183 /* Go to a specific location in the recorded execution trace. */
1184 void (*to_goto_record
) (struct target_ops
*, ULONGEST insn
)
1185 TARGET_DEFAULT_NORETURN (tcomplain ());
1187 /* Disassemble SIZE instructions in the recorded execution trace from
1188 the current position.
1189 If SIZE < 0, disassemble abs (SIZE) preceding instructions; otherwise,
1190 disassemble SIZE succeeding instructions. */
1191 void (*to_insn_history
) (struct target_ops
*, int size
,
1192 gdb_disassembly_flags flags
)
1193 TARGET_DEFAULT_NORETURN (tcomplain ());
1195 /* Disassemble SIZE instructions in the recorded execution trace around
1197 If SIZE < 0, disassemble abs (SIZE) instructions before FROM; otherwise,
1198 disassemble SIZE instructions after FROM. */
1199 void (*to_insn_history_from
) (struct target_ops
*,
1200 ULONGEST from
, int size
,
1201 gdb_disassembly_flags flags
)
1202 TARGET_DEFAULT_NORETURN (tcomplain ());
1204 /* Disassemble a section of the recorded execution trace from instruction
1205 BEGIN (inclusive) to instruction END (inclusive). */
1206 void (*to_insn_history_range
) (struct target_ops
*,
1207 ULONGEST begin
, ULONGEST end
,
1208 gdb_disassembly_flags flags
)
1209 TARGET_DEFAULT_NORETURN (tcomplain ());
1211 /* Print a function trace of the recorded execution trace.
1212 If SIZE < 0, print abs (SIZE) preceding functions; otherwise, print SIZE
1213 succeeding functions. */
1214 void (*to_call_history
) (struct target_ops
*, int size
, record_print_flags flags
)
1215 TARGET_DEFAULT_NORETURN (tcomplain ());
1217 /* Print a function trace of the recorded execution trace starting
1219 If SIZE < 0, print abs (SIZE) functions before FROM; otherwise, print
1220 SIZE functions after FROM. */
1221 void (*to_call_history_from
) (struct target_ops
*,
1222 ULONGEST begin
, int size
, record_print_flags flags
)
1223 TARGET_DEFAULT_NORETURN (tcomplain ());
1225 /* Print a function trace of an execution trace section from function BEGIN
1226 (inclusive) to function END (inclusive). */
1227 void (*to_call_history_range
) (struct target_ops
*,
1228 ULONGEST begin
, ULONGEST end
, record_print_flags flags
)
1229 TARGET_DEFAULT_NORETURN (tcomplain ());
1231 /* Nonzero if TARGET_OBJECT_LIBRARIES_SVR4 may be read with a
1233 int (*to_augmented_libraries_svr4_read
) (struct target_ops
*)
1234 TARGET_DEFAULT_RETURN (0);
1236 /* Those unwinders are tried before any other arch unwinders. If
1237 SELF doesn't have unwinders, it should delegate to the
1238 "beneath" target. */
1239 const struct frame_unwind
*(*to_get_unwinder
) (struct target_ops
*self
)
1240 TARGET_DEFAULT_RETURN (NULL
);
1242 const struct frame_unwind
*(*to_get_tailcall_unwinder
) (struct target_ops
*self
)
1243 TARGET_DEFAULT_RETURN (NULL
);
1245 /* Prepare to generate a core file. */
1246 void (*to_prepare_to_generate_core
) (struct target_ops
*)
1247 TARGET_DEFAULT_IGNORE ();
1249 /* Cleanup after generating a core file. */
1250 void (*to_done_generating_core
) (struct target_ops
*)
1251 TARGET_DEFAULT_IGNORE ();
1254 /* Need sub-structure for target machine related rather than comm related?
1258 /* Magic number for checking ops size. If a struct doesn't end with this
1259 number, somebody changed the declaration but didn't change all the
1260 places that initialize one. */
1262 #define OPS_MAGIC 3840
1264 /* The ops structure for our "current" target process. This should
1265 never be NULL. If there is no target, it points to the dummy_target. */
1267 extern struct target_ops current_target
;
1269 /* Define easy words for doing these operations on our current target. */
1271 #define target_shortname (current_target.to_shortname)
1272 #define target_longname (current_target.to_longname)
1274 /* Does whatever cleanup is required for a target that we are no
1275 longer going to be calling. This routine is automatically always
1276 called after popping the target off the target stack - the target's
1277 own methods are no longer available through the target vector.
1278 Closing file descriptors and freeing all memory allocated memory are
1279 typical things it should do. */
1281 void target_close (struct target_ops
*targ
);
1283 /* Find the correct target to use for "attach". If a target on the
1284 current stack supports attaching, then it is returned. Otherwise,
1285 the default run target is returned. */
1287 extern struct target_ops
*find_attach_target (void);
1289 /* Find the correct target to use for "run". If a target on the
1290 current stack supports creating a new inferior, then it is
1291 returned. Otherwise, the default run target is returned. */
1293 extern struct target_ops
*find_run_target (void);
1295 /* Some targets don't generate traps when attaching to the inferior,
1296 or their target_attach implementation takes care of the waiting.
1297 These targets must set to_attach_no_wait. */
1299 #define target_attach_no_wait \
1300 (current_target.to_attach_no_wait)
1302 /* The target_attach operation places a process under debugger control,
1303 and stops the process.
1305 This operation provides a target-specific hook that allows the
1306 necessary bookkeeping to be performed after an attach completes. */
1307 #define target_post_attach(pid) \
1308 (*current_target.to_post_attach) (¤t_target, pid)
1310 /* Display a message indicating we're about to detach from the current
1311 inferior process. */
1313 extern void target_announce_detach (int from_tty
);
1315 /* Takes a program previously attached to and detaches it.
1316 The program may resume execution (some targets do, some don't) and will
1317 no longer stop on signals, etc. We better not have left any breakpoints
1318 in the program or it'll die when it hits one. FROM_TTY says whether to be
1321 extern void target_detach (inferior
*inf
, int from_tty
);
1323 /* Disconnect from the current target without resuming it (leaving it
1324 waiting for a debugger). */
1326 extern void target_disconnect (const char *, int);
1328 /* Resume execution (or prepare for execution) of a target thread,
1329 process or all processes. STEP says whether to hardware
1330 single-step or to run free; SIGGNAL is the signal to be given to
1331 the target, or GDB_SIGNAL_0 for no signal. The caller may not pass
1332 GDB_SIGNAL_DEFAULT. A specific PTID means `step/resume only this
1333 process id'. A wildcard PTID (all threads, or all threads of
1334 process) means `step/resume INFERIOR_PTID, and let other threads
1335 (for which the wildcard PTID matches) resume with their
1336 'thread->suspend.stop_signal' signal (usually GDB_SIGNAL_0) if it
1337 is in "pass" state, or with no signal if in "no pass" state.
1339 In order to efficiently handle batches of resumption requests,
1340 targets may implement this method such that it records the
1341 resumption request, but defers the actual resumption to the
1342 target_commit_resume method implementation. See
1343 target_commit_resume below. */
1344 extern void target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
);
1346 /* Commit a series of resumption requests previously prepared with
1347 target_resume calls.
1349 GDB always calls target_commit_resume after calling target_resume
1350 one or more times. A target may thus use this method in
1351 coordination with the target_resume method to batch target-side
1352 resumption requests. In that case, the target doesn't actually
1353 resume in its target_resume implementation. Instead, it prepares
1354 the resumption in target_resume, and defers the actual resumption
1355 to target_commit_resume. E.g., the remote target uses this to
1356 coalesce multiple resumption requests in a single vCont packet. */
1357 extern void target_commit_resume ();
1359 /* Setup to defer target_commit_resume calls, and reactivate
1360 target_commit_resume on destruction, if it was previously
1362 extern scoped_restore_tmpl
<int> make_scoped_defer_target_commit_resume ();
1364 /* For target_read_memory see target/target.h. */
1366 /* The default target_ops::to_wait implementation. */
1368 extern ptid_t
default_target_wait (struct target_ops
*ops
,
1370 struct target_waitstatus
*status
,
1373 /* Fetch at least register REGNO, or all regs if regno == -1. No result. */
1375 extern void target_fetch_registers (struct regcache
*regcache
, int regno
);
1377 /* Store at least register REGNO, or all regs if REGNO == -1.
1378 It can store as many registers as it wants to, so target_prepare_to_store
1379 must have been previously called. Calls error() if there are problems. */
1381 extern void target_store_registers (struct regcache
*regcache
, int regs
);
1383 /* Get ready to modify the registers array. On machines which store
1384 individual registers, this doesn't need to do anything. On machines
1385 which store all the registers in one fell swoop, this makes sure
1386 that REGISTERS contains all the registers from the program being
1389 #define target_prepare_to_store(regcache) \
1390 (*current_target.to_prepare_to_store) (¤t_target, regcache)
1392 /* Determine current address space of thread PTID. */
1394 struct address_space
*target_thread_address_space (ptid_t
);
1396 /* Implement the "info proc" command. This returns one if the request
1397 was handled, and zero otherwise. It can also throw an exception if
1398 an error was encountered while attempting to handle the
1401 int target_info_proc (const char *, enum info_proc_what
);
1403 /* Returns true if this target can disable address space randomization. */
1405 int target_supports_disable_randomization (void);
1407 /* Returns true if this target can enable and disable tracepoints
1408 while a trace experiment is running. */
1410 #define target_supports_enable_disable_tracepoint() \
1411 (*current_target.to_supports_enable_disable_tracepoint) (¤t_target)
1413 #define target_supports_string_tracing() \
1414 (*current_target.to_supports_string_tracing) (¤t_target)
1416 /* Returns true if this target can handle breakpoint conditions
1419 #define target_supports_evaluation_of_breakpoint_conditions() \
1420 (*current_target.to_supports_evaluation_of_breakpoint_conditions) (¤t_target)
1422 /* Returns true if this target can handle breakpoint commands
1425 #define target_can_run_breakpoint_commands() \
1426 (*current_target.to_can_run_breakpoint_commands) (¤t_target)
1428 extern int target_read_string (CORE_ADDR
, gdb::unique_xmalloc_ptr
<char> *,
1431 /* For target_read_memory see target/target.h. */
1433 extern int target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
1436 extern int target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
);
1438 extern int target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
);
1440 /* For target_write_memory see target/target.h. */
1442 extern int target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
,
1445 /* Fetches the target's memory map. If one is found it is sorted
1446 and returned, after some consistency checking. Otherwise, NULL
1448 std::vector
<mem_region
> target_memory_map (void);
1450 /* Erases all flash memory regions on the target. */
1451 void flash_erase_command (const char *cmd
, int from_tty
);
1453 /* Erase the specified flash region. */
1454 void target_flash_erase (ULONGEST address
, LONGEST length
);
1456 /* Finish a sequence of flash operations. */
1457 void target_flash_done (void);
1459 /* Describes a request for a memory write operation. */
1460 struct memory_write_request
1462 memory_write_request (ULONGEST begin_
, ULONGEST end_
,
1463 gdb_byte
*data_
= nullptr, void *baton_
= nullptr)
1464 : begin (begin_
), end (end_
), data (data_
), baton (baton_
)
1467 /* Begining address that must be written. */
1469 /* Past-the-end address. */
1471 /* The data to write. */
1473 /* A callback baton for progress reporting for this request. */
1477 /* Enumeration specifying different flash preservation behaviour. */
1478 enum flash_preserve_mode
1484 /* Write several memory blocks at once. This version can be more
1485 efficient than making several calls to target_write_memory, in
1486 particular because it can optimize accesses to flash memory.
1488 Moreover, this is currently the only memory access function in gdb
1489 that supports writing to flash memory, and it should be used for
1490 all cases where access to flash memory is desirable.
1492 REQUESTS is the vector (see vec.h) of memory_write_request.
1493 PRESERVE_FLASH_P indicates what to do with blocks which must be
1494 erased, but not completely rewritten.
1495 PROGRESS_CB is a function that will be periodically called to provide
1496 feedback to user. It will be called with the baton corresponding
1497 to the request currently being written. It may also be called
1498 with a NULL baton, when preserved flash sectors are being rewritten.
1500 The function returns 0 on success, and error otherwise. */
1501 int target_write_memory_blocks
1502 (const std::vector
<memory_write_request
> &requests
,
1503 enum flash_preserve_mode preserve_flash_p
,
1504 void (*progress_cb
) (ULONGEST
, void *));
1506 /* Print a line about the current target. */
1508 #define target_files_info() \
1509 (*current_target.to_files_info) (¤t_target)
1511 /* Insert a breakpoint at address BP_TGT->placed_address in
1512 the target machine. Returns 0 for success, and returns non-zero or
1513 throws an error (with a detailed failure reason error code and
1514 message) otherwise. */
1516 extern int target_insert_breakpoint (struct gdbarch
*gdbarch
,
1517 struct bp_target_info
*bp_tgt
);
1519 /* Remove a breakpoint at address BP_TGT->placed_address in the target
1520 machine. Result is 0 for success, non-zero for error. */
1522 extern int target_remove_breakpoint (struct gdbarch
*gdbarch
,
1523 struct bp_target_info
*bp_tgt
,
1524 enum remove_bp_reason reason
);
1526 /* Return true if the target stack has a non-default
1527 "to_terminal_ours" method. */
1529 extern int target_supports_terminal_ours (void);
1531 /* Kill the inferior process. Make it go away. */
1533 extern void target_kill (void);
1535 /* Load an executable file into the target process. This is expected
1536 to not only bring new code into the target process, but also to
1537 update GDB's symbol tables to match.
1539 ARG contains command-line arguments, to be broken down with
1540 buildargv (). The first non-switch argument is the filename to
1541 load, FILE; the second is a number (as parsed by strtoul (..., ...,
1542 0)), which is an offset to apply to the load addresses of FILE's
1543 sections. The target may define switches, or other non-switch
1544 arguments, as it pleases. */
1546 extern void target_load (const char *arg
, int from_tty
);
1548 /* Some targets (such as ttrace-based HPUX) don't allow us to request
1549 notification of inferior events such as fork and vork immediately
1550 after the inferior is created. (This because of how gdb gets an
1551 inferior created via invoking a shell to do it. In such a scenario,
1552 if the shell init file has commands in it, the shell will fork and
1553 exec for each of those commands, and we will see each such fork
1556 Such targets will supply an appropriate definition for this function. */
1558 #define target_post_startup_inferior(ptid) \
1559 (*current_target.to_post_startup_inferior) (¤t_target, ptid)
1561 /* On some targets, we can catch an inferior fork or vfork event when
1562 it occurs. These functions insert/remove an already-created
1563 catchpoint for such events. They return 0 for success, 1 if the
1564 catchpoint type is not supported and -1 for failure. */
1566 #define target_insert_fork_catchpoint(pid) \
1567 (*current_target.to_insert_fork_catchpoint) (¤t_target, pid)
1569 #define target_remove_fork_catchpoint(pid) \
1570 (*current_target.to_remove_fork_catchpoint) (¤t_target, pid)
1572 #define target_insert_vfork_catchpoint(pid) \
1573 (*current_target.to_insert_vfork_catchpoint) (¤t_target, pid)
1575 #define target_remove_vfork_catchpoint(pid) \
1576 (*current_target.to_remove_vfork_catchpoint) (¤t_target, pid)
1578 /* If the inferior forks or vforks, this function will be called at
1579 the next resume in order to perform any bookkeeping and fiddling
1580 necessary to continue debugging either the parent or child, as
1581 requested, and releasing the other. Information about the fork
1582 or vfork event is available via get_last_target_status ().
1583 This function returns 1 if the inferior should not be resumed
1584 (i.e. there is another event pending). */
1586 int target_follow_fork (int follow_child
, int detach_fork
);
1588 /* Handle the target-specific bookkeeping required when the inferior
1589 makes an exec call. INF is the exec'd inferior. */
1591 void target_follow_exec (struct inferior
*inf
, char *execd_pathname
);
1593 /* On some targets, we can catch an inferior exec event when it
1594 occurs. These functions insert/remove an already-created
1595 catchpoint for such events. They return 0 for success, 1 if the
1596 catchpoint type is not supported and -1 for failure. */
1598 #define target_insert_exec_catchpoint(pid) \
1599 (*current_target.to_insert_exec_catchpoint) (¤t_target, pid)
1601 #define target_remove_exec_catchpoint(pid) \
1602 (*current_target.to_remove_exec_catchpoint) (¤t_target, pid)
1606 NEEDED is true if any syscall catch (of any kind) is requested.
1607 If NEEDED is false, it means the target can disable the mechanism to
1608 catch system calls because there are no more catchpoints of this type.
1610 ANY_COUNT is nonzero if a generic (filter-less) syscall catch is
1611 being requested. In this case, SYSCALL_COUNTS should be ignored.
1613 SYSCALL_COUNTS is an array of ints, indexed by syscall number. An
1614 element in this array is nonzero if that syscall should be caught.
1615 This argument only matters if ANY_COUNT is zero.
1617 Return 0 for success, 1 if syscall catchpoints are not supported or -1
1620 #define target_set_syscall_catchpoint(pid, needed, any_count, syscall_counts) \
1621 (*current_target.to_set_syscall_catchpoint) (¤t_target, \
1622 pid, needed, any_count, \
1625 /* The debugger has completed a blocking wait() call. There is now
1626 some process event that must be processed. This function should
1627 be defined by those targets that require the debugger to perform
1628 cleanup or internal state changes in response to the process event. */
1630 /* For target_mourn_inferior see target/target.h. */
1632 /* Does target have enough data to do a run or attach command? */
1634 #define target_can_run(t) \
1635 ((t)->to_can_run) (t)
1637 /* Set list of signals to be handled in the target.
1639 PASS_SIGNALS is an array of size NSIG, indexed by target signal number
1640 (enum gdb_signal). For every signal whose entry in this array is
1641 non-zero, the target is allowed -but not required- to skip reporting
1642 arrival of the signal to the GDB core by returning from target_wait,
1643 and to pass the signal directly to the inferior instead.
1645 However, if the target is hardware single-stepping a thread that is
1646 about to receive a signal, it needs to be reported in any case, even
1647 if mentioned in a previous target_pass_signals call. */
1649 extern void target_pass_signals (int nsig
, unsigned char *pass_signals
);
1651 /* Set list of signals the target may pass to the inferior. This
1652 directly maps to the "handle SIGNAL pass/nopass" setting.
1654 PROGRAM_SIGNALS is an array of size NSIG, indexed by target signal
1655 number (enum gdb_signal). For every signal whose entry in this
1656 array is non-zero, the target is allowed to pass the signal to the
1657 inferior. Signals not present in the array shall be silently
1658 discarded. This does not influence whether to pass signals to the
1659 inferior as a result of a target_resume call. This is useful in
1660 scenarios where the target needs to decide whether to pass or not a
1661 signal to the inferior without GDB core involvement, such as for
1662 example, when detaching (as threads may have been suspended with
1663 pending signals not reported to GDB). */
1665 extern void target_program_signals (int nsig
, unsigned char *program_signals
);
1667 /* Check to see if a thread is still alive. */
1669 extern int target_thread_alive (ptid_t ptid
);
1671 /* Sync the target's threads with GDB's thread list. */
1673 extern void target_update_thread_list (void);
1675 /* Make target stop in a continuable fashion. (For instance, under
1676 Unix, this should act like SIGSTOP). Note that this function is
1677 asynchronous: it does not wait for the target to become stopped
1678 before returning. If this is the behavior you want please use
1679 target_stop_and_wait. */
1681 extern void target_stop (ptid_t ptid
);
1683 /* Interrupt the target. Unlike target_stop, this does not specify
1684 which thread/process reports the stop. For most target this acts
1685 like raising a SIGINT, though that's not absolutely required. This
1686 function is asynchronous. */
1688 extern void target_interrupt ();
1690 /* Pass a ^C, as determined to have been pressed by checking the quit
1691 flag, to the target, as if the user had typed the ^C on the
1692 inferior's controlling terminal while the inferior was in the
1693 foreground. Remote targets may take the opportunity to detect the
1694 remote side is not responding and offer to disconnect. */
1696 extern void target_pass_ctrlc (void);
1698 /* The default target_ops::to_pass_ctrlc implementation. Simply calls
1699 target_interrupt. */
1700 extern void default_target_pass_ctrlc (struct target_ops
*ops
);
1702 /* Send the specified COMMAND to the target's monitor
1703 (shell,interpreter) for execution. The result of the query is
1704 placed in OUTBUF. */
1706 #define target_rcmd(command, outbuf) \
1707 (*current_target.to_rcmd) (¤t_target, command, outbuf)
1710 /* Does the target include all of memory, or only part of it? This
1711 determines whether we look up the target chain for other parts of
1712 memory if this target can't satisfy a request. */
1714 extern int target_has_all_memory_1 (void);
1715 #define target_has_all_memory target_has_all_memory_1 ()
1717 /* Does the target include memory? (Dummy targets don't.) */
1719 extern int target_has_memory_1 (void);
1720 #define target_has_memory target_has_memory_1 ()
1722 /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until
1723 we start a process.) */
1725 extern int target_has_stack_1 (void);
1726 #define target_has_stack target_has_stack_1 ()
1728 /* Does the target have registers? (Exec files don't.) */
1730 extern int target_has_registers_1 (void);
1731 #define target_has_registers target_has_registers_1 ()
1733 /* Does the target have execution? Can we make it jump (through
1734 hoops), or pop its stack a few times? This means that the current
1735 target is currently executing; for some targets, that's the same as
1736 whether or not the target is capable of execution, but there are
1737 also targets which can be current while not executing. In that
1738 case this will become true after to_create_inferior or
1741 extern int target_has_execution_1 (ptid_t
);
1743 /* Like target_has_execution_1, but always passes inferior_ptid. */
1745 extern int target_has_execution_current (void);
1747 #define target_has_execution target_has_execution_current ()
1749 /* Default implementations for process_stratum targets. Return true
1750 if there's a selected inferior, false otherwise. */
1752 extern int default_child_has_all_memory (struct target_ops
*ops
);
1753 extern int default_child_has_memory (struct target_ops
*ops
);
1754 extern int default_child_has_stack (struct target_ops
*ops
);
1755 extern int default_child_has_registers (struct target_ops
*ops
);
1756 extern int default_child_has_execution (struct target_ops
*ops
,
1759 /* Can the target support the debugger control of thread execution?
1760 Can it lock the thread scheduler? */
1762 #define target_can_lock_scheduler \
1763 (current_target.to_has_thread_control & tc_schedlock)
1765 /* Controls whether async mode is permitted. */
1766 extern int target_async_permitted
;
1768 /* Can the target support asynchronous execution? */
1769 #define target_can_async_p() (current_target.to_can_async_p (¤t_target))
1771 /* Is the target in asynchronous execution mode? */
1772 #define target_is_async_p() (current_target.to_is_async_p (¤t_target))
1774 /* Enables/disabled async target events. */
1775 extern void target_async (int enable
);
1777 /* Enables/disables thread create and exit events. */
1778 extern void target_thread_events (int enable
);
1780 /* Whether support for controlling the target backends always in
1781 non-stop mode is enabled. */
1782 extern enum auto_boolean target_non_stop_enabled
;
1784 /* Is the target in non-stop mode? Some targets control the inferior
1785 in non-stop mode even with "set non-stop off". Always true if "set
1787 extern int target_is_non_stop_p (void);
1789 #define target_execution_direction() \
1790 (current_target.to_execution_direction (¤t_target))
1792 /* Converts a process id to a string. Usually, the string just contains
1793 `process xyz', but on some systems it may contain
1794 `process xyz thread abc'. */
1796 extern const char *target_pid_to_str (ptid_t ptid
);
1798 extern const char *normal_pid_to_str (ptid_t ptid
);
1800 /* Return a short string describing extra information about PID,
1801 e.g. "sleeping", "runnable", "running on LWP 3". Null return value
1804 #define target_extra_thread_info(TP) \
1805 (current_target.to_extra_thread_info (¤t_target, TP))
1807 /* Return the thread's name, or NULL if the target is unable to determine it.
1808 The returned value must not be freed by the caller. */
1810 extern const char *target_thread_name (struct thread_info
*);
1812 /* Given a pointer to a thread library specific thread handle and
1813 its length, return a pointer to the corresponding thread_info struct. */
1815 extern struct thread_info
*target_thread_handle_to_thread_info
1816 (const gdb_byte
*thread_handle
, int handle_len
, struct inferior
*inf
);
1818 /* Attempts to find the pathname of the executable file
1819 that was run to create a specified process.
1821 The process PID must be stopped when this operation is used.
1823 If the executable file cannot be determined, NULL is returned.
1825 Else, a pointer to a character string containing the pathname
1826 is returned. This string should be copied into a buffer by
1827 the client if the string will not be immediately used, or if
1830 #define target_pid_to_exec_file(pid) \
1831 (current_target.to_pid_to_exec_file) (¤t_target, pid)
1833 /* See the to_thread_architecture description in struct target_ops. */
1835 #define target_thread_architecture(ptid) \
1836 (current_target.to_thread_architecture (¤t_target, ptid))
1839 * Iterator function for target memory regions.
1840 * Calls a callback function once for each memory region 'mapped'
1841 * in the child process. Defined as a simple macro rather than
1842 * as a function macro so that it can be tested for nullity.
1845 #define target_find_memory_regions(FUNC, DATA) \
1846 (current_target.to_find_memory_regions) (¤t_target, FUNC, DATA)
1849 * Compose corefile .note section.
1852 #define target_make_corefile_notes(BFD, SIZE_P) \
1853 (current_target.to_make_corefile_notes) (¤t_target, BFD, SIZE_P)
1855 /* Bookmark interfaces. */
1856 #define target_get_bookmark(ARGS, FROM_TTY) \
1857 (current_target.to_get_bookmark) (¤t_target, ARGS, FROM_TTY)
1859 #define target_goto_bookmark(ARG, FROM_TTY) \
1860 (current_target.to_goto_bookmark) (¤t_target, ARG, FROM_TTY)
1862 /* Hardware watchpoint interfaces. */
1864 /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or
1865 write). Only the INFERIOR_PTID task is being queried. */
1867 #define target_stopped_by_watchpoint() \
1868 ((*current_target.to_stopped_by_watchpoint) (¤t_target))
1870 /* Returns non-zero if the target stopped because it executed a
1871 software breakpoint instruction. */
1873 #define target_stopped_by_sw_breakpoint() \
1874 ((*current_target.to_stopped_by_sw_breakpoint) (¤t_target))
1876 #define target_supports_stopped_by_sw_breakpoint() \
1877 ((*current_target.to_supports_stopped_by_sw_breakpoint) (¤t_target))
1879 #define target_stopped_by_hw_breakpoint() \
1880 ((*current_target.to_stopped_by_hw_breakpoint) (¤t_target))
1882 #define target_supports_stopped_by_hw_breakpoint() \
1883 ((*current_target.to_supports_stopped_by_hw_breakpoint) (¤t_target))
1885 /* Non-zero if we have steppable watchpoints */
1887 #define target_have_steppable_watchpoint \
1888 (current_target.to_have_steppable_watchpoint)
1890 /* Non-zero if we have continuable watchpoints */
1892 #define target_have_continuable_watchpoint \
1893 (current_target.to_have_continuable_watchpoint)
1895 /* Provide defaults for hardware watchpoint functions. */
1897 /* If the *_hw_beakpoint functions have not been defined
1898 elsewhere use the definitions in the target vector. */
1900 /* Returns positive if we can set a hardware watchpoint of type TYPE.
1901 Returns negative if the target doesn't have enough hardware debug
1902 registers available. Return zero if hardware watchpoint of type
1903 TYPE isn't supported. TYPE is one of bp_hardware_watchpoint,
1904 bp_read_watchpoint, bp_write_watchpoint, or bp_hardware_breakpoint.
1905 CNT is the number of such watchpoints used so far, including this
1906 one. OTHERTYPE is the number of watchpoints of other types than
1907 this one used so far. */
1909 #define target_can_use_hardware_watchpoint(TYPE,CNT,OTHERTYPE) \
1910 (*current_target.to_can_use_hw_breakpoint) (¤t_target, \
1911 TYPE, CNT, OTHERTYPE)
1913 /* Returns the number of debug registers needed to watch the given
1914 memory region, or zero if not supported. */
1916 #define target_region_ok_for_hw_watchpoint(addr, len) \
1917 (*current_target.to_region_ok_for_hw_watchpoint) (¤t_target, \
1921 #define target_can_do_single_step() \
1922 (*current_target.to_can_do_single_step) (¤t_target)
1924 /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes.
1925 TYPE is 0 for write, 1 for read, and 2 for read/write accesses.
1926 COND is the expression for its condition, or NULL if there's none.
1927 Returns 0 for success, 1 if the watchpoint type is not supported,
1930 #define target_insert_watchpoint(addr, len, type, cond) \
1931 (*current_target.to_insert_watchpoint) (¤t_target, \
1932 addr, len, type, cond)
1934 #define target_remove_watchpoint(addr, len, type, cond) \
1935 (*current_target.to_remove_watchpoint) (¤t_target, \
1936 addr, len, type, cond)
1938 /* Insert a new masked watchpoint at ADDR using the mask MASK.
1939 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
1940 or hw_access for an access watchpoint. Returns 0 for success, 1 if
1941 masked watchpoints are not supported, -1 for failure. */
1943 extern int target_insert_mask_watchpoint (CORE_ADDR
, CORE_ADDR
,
1944 enum target_hw_bp_type
);
1946 /* Remove a masked watchpoint at ADDR with the mask MASK.
1947 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
1948 or hw_access for an access watchpoint. Returns 0 for success, non-zero
1951 extern int target_remove_mask_watchpoint (CORE_ADDR
, CORE_ADDR
,
1952 enum target_hw_bp_type
);
1954 /* Insert a hardware breakpoint at address BP_TGT->placed_address in
1955 the target machine. Returns 0 for success, and returns non-zero or
1956 throws an error (with a detailed failure reason error code and
1957 message) otherwise. */
1959 #define target_insert_hw_breakpoint(gdbarch, bp_tgt) \
1960 (*current_target.to_insert_hw_breakpoint) (¤t_target, \
1963 #define target_remove_hw_breakpoint(gdbarch, bp_tgt) \
1964 (*current_target.to_remove_hw_breakpoint) (¤t_target, \
1967 /* Return number of debug registers needed for a ranged breakpoint,
1968 or -1 if ranged breakpoints are not supported. */
1970 extern int target_ranged_break_num_registers (void);
1972 /* Return non-zero if target knows the data address which triggered this
1973 target_stopped_by_watchpoint, in such case place it to *ADDR_P. Only the
1974 INFERIOR_PTID task is being queried. */
1975 #define target_stopped_data_address(target, addr_p) \
1976 (*(target)->to_stopped_data_address) (target, addr_p)
1978 /* Return non-zero if ADDR is within the range of a watchpoint spanning
1979 LENGTH bytes beginning at START. */
1980 #define target_watchpoint_addr_within_range(target, addr, start, length) \
1981 (*(target)->to_watchpoint_addr_within_range) (target, addr, start, length)
1983 /* Return non-zero if the target is capable of using hardware to evaluate
1984 the condition expression. In this case, if the condition is false when
1985 the watched memory location changes, execution may continue without the
1986 debugger being notified.
1988 Due to limitations in the hardware implementation, it may be capable of
1989 avoiding triggering the watchpoint in some cases where the condition
1990 expression is false, but may report some false positives as well.
1991 For this reason, GDB will still evaluate the condition expression when
1992 the watchpoint triggers. */
1993 #define target_can_accel_watchpoint_condition(addr, len, type, cond) \
1994 (*current_target.to_can_accel_watchpoint_condition) (¤t_target, \
1995 addr, len, type, cond)
1997 /* Return number of debug registers needed for a masked watchpoint,
1998 -1 if masked watchpoints are not supported or -2 if the given address
1999 and mask combination cannot be used. */
2001 extern int target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
);
2003 /* Target can execute in reverse? */
2004 #define target_can_execute_reverse \
2005 current_target.to_can_execute_reverse (¤t_target)
2007 extern const struct target_desc
*target_read_description (struct target_ops
*);
2009 #define target_get_ada_task_ptid(lwp, tid) \
2010 (*current_target.to_get_ada_task_ptid) (¤t_target, lwp,tid)
2012 /* Utility implementation of searching memory. */
2013 extern int simple_search_memory (struct target_ops
* ops
,
2014 CORE_ADDR start_addr
,
2015 ULONGEST search_space_len
,
2016 const gdb_byte
*pattern
,
2017 ULONGEST pattern_len
,
2018 CORE_ADDR
*found_addrp
);
2020 /* Main entry point for searching memory. */
2021 extern int target_search_memory (CORE_ADDR start_addr
,
2022 ULONGEST search_space_len
,
2023 const gdb_byte
*pattern
,
2024 ULONGEST pattern_len
,
2025 CORE_ADDR
*found_addrp
);
2027 /* Target file operations. */
2029 /* Return nonzero if the filesystem seen by the current inferior
2030 is the local filesystem, zero otherwise. */
2031 #define target_filesystem_is_local() \
2032 current_target.to_filesystem_is_local (¤t_target)
2034 /* Open FILENAME on the target, in the filesystem as seen by INF,
2035 using FLAGS and MODE. If INF is NULL, use the filesystem seen
2036 by the debugger (GDB or, for remote targets, the remote stub).
2037 Return a target file descriptor, or -1 if an error occurs (and
2038 set *TARGET_ERRNO). */
2039 extern int target_fileio_open (struct inferior
*inf
,
2040 const char *filename
, int flags
,
2041 int mode
, int *target_errno
);
2043 /* Like target_fileio_open, but print a warning message if the
2044 file is being accessed over a link that may be slow. */
2045 extern int target_fileio_open_warn_if_slow (struct inferior
*inf
,
2046 const char *filename
,
2051 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
2052 Return the number of bytes written, or -1 if an error occurs
2053 (and set *TARGET_ERRNO). */
2054 extern int target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
2055 ULONGEST offset
, int *target_errno
);
2057 /* Read up to LEN bytes FD on the target into READ_BUF.
2058 Return the number of bytes read, or -1 if an error occurs
2059 (and set *TARGET_ERRNO). */
2060 extern int target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
2061 ULONGEST offset
, int *target_errno
);
2063 /* Get information about the file opened as FD on the target
2064 and put it in SB. Return 0 on success, or -1 if an error
2065 occurs (and set *TARGET_ERRNO). */
2066 extern int target_fileio_fstat (int fd
, struct stat
*sb
,
2069 /* Close FD on the target. Return 0, or -1 if an error occurs
2070 (and set *TARGET_ERRNO). */
2071 extern int target_fileio_close (int fd
, int *target_errno
);
2073 /* Unlink FILENAME on the target, in the filesystem as seen by INF.
2074 If INF is NULL, use the filesystem seen by the debugger (GDB or,
2075 for remote targets, the remote stub). Return 0, or -1 if an error
2076 occurs (and set *TARGET_ERRNO). */
2077 extern int target_fileio_unlink (struct inferior
*inf
,
2078 const char *filename
,
2081 /* Read value of symbolic link FILENAME on the target, in the
2082 filesystem as seen by INF. If INF is NULL, use the filesystem seen
2083 by the debugger (GDB or, for remote targets, the remote stub).
2084 Return a null-terminated string allocated via xmalloc, or NULL if
2085 an error occurs (and set *TARGET_ERRNO). */
2086 extern gdb::optional
<std::string
> target_fileio_readlink
2087 (struct inferior
*inf
, const char *filename
, int *target_errno
);
2089 /* Read target file FILENAME, in the filesystem as seen by INF. If
2090 INF is NULL, use the filesystem seen by the debugger (GDB or, for
2091 remote targets, the remote stub). The return value will be -1 if
2092 the transfer fails or is not supported; 0 if the object is empty;
2093 or the length of the object otherwise. If a positive value is
2094 returned, a sufficiently large buffer will be allocated using
2095 xmalloc and returned in *BUF_P containing the contents of the
2098 This method should be used for objects sufficiently small to store
2099 in a single xmalloc'd buffer, when no fixed bound on the object's
2100 size is known in advance. */
2101 extern LONGEST
target_fileio_read_alloc (struct inferior
*inf
,
2102 const char *filename
,
2105 /* Read target file FILENAME, in the filesystem as seen by INF. If
2106 INF is NULL, use the filesystem seen by the debugger (GDB or, for
2107 remote targets, the remote stub). The result is NUL-terminated and
2108 returned as a string, allocated using xmalloc. If an error occurs
2109 or the transfer is unsupported, NULL is returned. Empty objects
2110 are returned as allocated but empty strings. A warning is issued
2111 if the result contains any embedded NUL bytes. */
2112 extern gdb::unique_xmalloc_ptr
<char> target_fileio_read_stralloc
2113 (struct inferior
*inf
, const char *filename
);
2116 /* Tracepoint-related operations. */
2118 #define target_trace_init() \
2119 (*current_target.to_trace_init) (¤t_target)
2121 #define target_download_tracepoint(t) \
2122 (*current_target.to_download_tracepoint) (¤t_target, t)
2124 #define target_can_download_tracepoint() \
2125 (*current_target.to_can_download_tracepoint) (¤t_target)
2127 #define target_download_trace_state_variable(tsv) \
2128 (*current_target.to_download_trace_state_variable) (¤t_target, tsv)
2130 #define target_enable_tracepoint(loc) \
2131 (*current_target.to_enable_tracepoint) (¤t_target, loc)
2133 #define target_disable_tracepoint(loc) \
2134 (*current_target.to_disable_tracepoint) (¤t_target, loc)
2136 #define target_trace_start() \
2137 (*current_target.to_trace_start) (¤t_target)
2139 #define target_trace_set_readonly_regions() \
2140 (*current_target.to_trace_set_readonly_regions) (¤t_target)
2142 #define target_get_trace_status(ts) \
2143 (*current_target.to_get_trace_status) (¤t_target, ts)
2145 #define target_get_tracepoint_status(tp,utp) \
2146 (*current_target.to_get_tracepoint_status) (¤t_target, tp, utp)
2148 #define target_trace_stop() \
2149 (*current_target.to_trace_stop) (¤t_target)
2151 #define target_trace_find(type,num,addr1,addr2,tpp) \
2152 (*current_target.to_trace_find) (¤t_target, \
2153 (type), (num), (addr1), (addr2), (tpp))
2155 #define target_get_trace_state_variable_value(tsv,val) \
2156 (*current_target.to_get_trace_state_variable_value) (¤t_target, \
2159 #define target_save_trace_data(filename) \
2160 (*current_target.to_save_trace_data) (¤t_target, filename)
2162 #define target_upload_tracepoints(utpp) \
2163 (*current_target.to_upload_tracepoints) (¤t_target, utpp)
2165 #define target_upload_trace_state_variables(utsvp) \
2166 (*current_target.to_upload_trace_state_variables) (¤t_target, utsvp)
2168 #define target_get_raw_trace_data(buf,offset,len) \
2169 (*current_target.to_get_raw_trace_data) (¤t_target, \
2170 (buf), (offset), (len))
2172 #define target_get_min_fast_tracepoint_insn_len() \
2173 (*current_target.to_get_min_fast_tracepoint_insn_len) (¤t_target)
2175 #define target_set_disconnected_tracing(val) \
2176 (*current_target.to_set_disconnected_tracing) (¤t_target, val)
2178 #define target_set_circular_trace_buffer(val) \
2179 (*current_target.to_set_circular_trace_buffer) (¤t_target, val)
2181 #define target_set_trace_buffer_size(val) \
2182 (*current_target.to_set_trace_buffer_size) (¤t_target, val)
2184 #define target_set_trace_notes(user,notes,stopnotes) \
2185 (*current_target.to_set_trace_notes) (¤t_target, \
2186 (user), (notes), (stopnotes))
2188 #define target_get_tib_address(ptid, addr) \
2189 (*current_target.to_get_tib_address) (¤t_target, (ptid), (addr))
2191 #define target_set_permissions() \
2192 (*current_target.to_set_permissions) (¤t_target)
2194 #define target_static_tracepoint_marker_at(addr, marker) \
2195 (*current_target.to_static_tracepoint_marker_at) (¤t_target, \
2198 #define target_static_tracepoint_markers_by_strid(marker_id) \
2199 (*current_target.to_static_tracepoint_markers_by_strid) (¤t_target, \
2202 #define target_traceframe_info() \
2203 (*current_target.to_traceframe_info) (¤t_target)
2205 #define target_use_agent(use) \
2206 (*current_target.to_use_agent) (¤t_target, use)
2208 #define target_can_use_agent() \
2209 (*current_target.to_can_use_agent) (¤t_target)
2211 #define target_augmented_libraries_svr4_read() \
2212 (*current_target.to_augmented_libraries_svr4_read) (¤t_target)
2214 /* Command logging facility. */
2216 #define target_log_command(p) \
2217 (*current_target.to_log_command) (¤t_target, p)
2220 extern int target_core_of_thread (ptid_t ptid
);
2222 /* See to_get_unwinder in struct target_ops. */
2223 extern const struct frame_unwind
*target_get_unwinder (void);
2225 /* See to_get_tailcall_unwinder in struct target_ops. */
2226 extern const struct frame_unwind
*target_get_tailcall_unwinder (void);
2228 /* This implements basic memory verification, reading target memory
2229 and performing the comparison here (as opposed to accelerated
2230 verification making use of the qCRC packet, for example). */
2232 extern int simple_verify_memory (struct target_ops
* ops
,
2233 const gdb_byte
*data
,
2234 CORE_ADDR memaddr
, ULONGEST size
);
2236 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range matches
2237 the contents of [DATA,DATA+SIZE). Returns 1 if there's a match, 0
2238 if there's a mismatch, and -1 if an error is encountered while
2239 reading memory. Throws an error if the functionality is found not
2240 to be supported by the current target. */
2241 int target_verify_memory (const gdb_byte
*data
,
2242 CORE_ADDR memaddr
, ULONGEST size
);
2244 /* Routines for maintenance of the target structures...
2246 complete_target_initialization: Finalize a target_ops by filling in
2247 any fields needed by the target implementation. Unnecessary for
2248 targets which are registered via add_target, as this part gets
2251 add_target: Add a target to the list of all possible targets.
2252 This only makes sense for targets that should be activated using
2253 the "target TARGET_NAME ..." command.
2255 push_target: Make this target the top of the stack of currently used
2256 targets, within its particular stratum of the stack. Result
2257 is 0 if now atop the stack, nonzero if not on top (maybe
2260 unpush_target: Remove this from the stack of currently used targets,
2261 no matter where it is on the list. Returns 0 if no
2262 change, 1 if removed from stack. */
2264 extern void add_target (struct target_ops
*);
2266 extern void add_target_with_completer (struct target_ops
*t
,
2267 completer_ftype
*completer
);
2269 extern void complete_target_initialization (struct target_ops
*t
);
2271 /* Adds a command ALIAS for target T and marks it deprecated. This is useful
2272 for maintaining backwards compatibility when renaming targets. */
2274 extern void add_deprecated_target_alias (struct target_ops
*t
,
2277 extern void push_target (struct target_ops
*);
2279 extern int unpush_target (struct target_ops
*);
2281 extern void target_pre_inferior (int);
2283 extern void target_preopen (int);
2285 /* Does whatever cleanup is required to get rid of all pushed targets. */
2286 extern void pop_all_targets (void);
2288 /* Like pop_all_targets, but pops only targets whose stratum is at or
2290 extern void pop_all_targets_at_and_above (enum strata stratum
);
2292 /* Like pop_all_targets, but pops only targets whose stratum is
2293 strictly above ABOVE_STRATUM. */
2294 extern void pop_all_targets_above (enum strata above_stratum
);
2296 extern int target_is_pushed (struct target_ops
*t
);
2298 extern CORE_ADDR
target_translate_tls_address (struct objfile
*objfile
,
2301 /* Struct target_section maps address ranges to file sections. It is
2302 mostly used with BFD files, but can be used without (e.g. for handling
2303 raw disks, or files not in formats handled by BFD). */
2305 struct target_section
2307 CORE_ADDR addr
; /* Lowest address in section */
2308 CORE_ADDR endaddr
; /* 1+highest address in section */
2310 struct bfd_section
*the_bfd_section
;
2312 /* The "owner" of the section.
2313 It can be any unique value. It is set by add_target_sections
2314 and used by remove_target_sections.
2315 For example, for executables it is a pointer to exec_bfd and
2316 for shlibs it is the so_list pointer. */
2320 /* Holds an array of target sections. Defined by [SECTIONS..SECTIONS_END[. */
2322 struct target_section_table
2324 struct target_section
*sections
;
2325 struct target_section
*sections_end
;
2328 /* Return the "section" containing the specified address. */
2329 struct target_section
*target_section_by_addr (struct target_ops
*target
,
2332 /* Return the target section table this target (or the targets
2333 beneath) currently manipulate. */
2335 extern struct target_section_table
*target_get_section_table
2336 (struct target_ops
*target
);
2338 /* From mem-break.c */
2340 extern int memory_remove_breakpoint (struct target_ops
*, struct gdbarch
*,
2341 struct bp_target_info
*,
2342 enum remove_bp_reason
);
2344 extern int memory_insert_breakpoint (struct target_ops
*, struct gdbarch
*,
2345 struct bp_target_info
*);
2347 /* Check whether the memory at the breakpoint's placed address still
2348 contains the expected breakpoint instruction. */
2350 extern int memory_validate_breakpoint (struct gdbarch
*gdbarch
,
2351 struct bp_target_info
*bp_tgt
);
2353 extern int default_memory_remove_breakpoint (struct gdbarch
*,
2354 struct bp_target_info
*);
2356 extern int default_memory_insert_breakpoint (struct gdbarch
*,
2357 struct bp_target_info
*);
2362 extern void initialize_targets (void);
2364 extern void noprocess (void) ATTRIBUTE_NORETURN
;
2366 extern void target_require_runnable (void);
2368 extern struct target_ops
*find_target_beneath (struct target_ops
*);
2370 /* Find the target at STRATUM. If no target is at that stratum,
2373 struct target_ops
*find_target_at (enum strata stratum
);
2375 /* Read OS data object of type TYPE from the target, and return it in XML
2376 format. The return value follows the same rules as target_read_stralloc. */
2378 extern gdb::optional
<gdb::char_vector
> target_get_osdata (const char *type
);
2380 /* Stuff that should be shared among the various remote targets. */
2382 /* Debugging level. 0 is off, and non-zero values mean to print some debug
2383 information (higher values, more information). */
2384 extern int remote_debug
;
2386 /* Speed in bits per second, or -1 which means don't mess with the speed. */
2387 extern int baud_rate
;
2389 /* Parity for serial port */
2390 extern int serial_parity
;
2392 /* Timeout limit for response from target. */
2393 extern int remote_timeout
;
2397 /* Set the show memory breakpoints mode to show, and return a
2398 scoped_restore to restore it back to the current value. */
2399 extern scoped_restore_tmpl
<int>
2400 make_scoped_restore_show_memory_breakpoints (int show
);
2402 extern int may_write_registers
;
2403 extern int may_write_memory
;
2404 extern int may_insert_breakpoints
;
2405 extern int may_insert_tracepoints
;
2406 extern int may_insert_fast_tracepoints
;
2407 extern int may_stop
;
2409 extern void update_target_permissions (void);
2412 /* Imported from machine dependent code. */
2414 /* See to_enable_btrace in struct target_ops. */
2415 extern struct btrace_target_info
*
2416 target_enable_btrace (ptid_t ptid
, const struct btrace_config
*);
2418 /* See to_disable_btrace in struct target_ops. */
2419 extern void target_disable_btrace (struct btrace_target_info
*btinfo
);
2421 /* See to_teardown_btrace in struct target_ops. */
2422 extern void target_teardown_btrace (struct btrace_target_info
*btinfo
);
2424 /* See to_read_btrace in struct target_ops. */
2425 extern enum btrace_error
target_read_btrace (struct btrace_data
*,
2426 struct btrace_target_info
*,
2427 enum btrace_read_type
);
2429 /* See to_btrace_conf in struct target_ops. */
2430 extern const struct btrace_config
*
2431 target_btrace_conf (const struct btrace_target_info
*);
2433 /* See to_stop_recording in struct target_ops. */
2434 extern void target_stop_recording (void);
2436 /* See to_save_record in struct target_ops. */
2437 extern void target_save_record (const char *filename
);
2439 /* Query if the target supports deleting the execution log. */
2440 extern int target_supports_delete_record (void);
2442 /* See to_delete_record in struct target_ops. */
2443 extern void target_delete_record (void);
2445 /* See to_record_method. */
2446 extern enum record_method
target_record_method (ptid_t ptid
);
2448 /* See to_record_is_replaying in struct target_ops. */
2449 extern int target_record_is_replaying (ptid_t ptid
);
2451 /* See to_record_will_replay in struct target_ops. */
2452 extern int target_record_will_replay (ptid_t ptid
, int dir
);
2454 /* See to_record_stop_replaying in struct target_ops. */
2455 extern void target_record_stop_replaying (void);
2457 /* See to_goto_record_begin in struct target_ops. */
2458 extern void target_goto_record_begin (void);
2460 /* See to_goto_record_end in struct target_ops. */
2461 extern void target_goto_record_end (void);
2463 /* See to_goto_record in struct target_ops. */
2464 extern void target_goto_record (ULONGEST insn
);
2466 /* See to_insn_history. */
2467 extern void target_insn_history (int size
, gdb_disassembly_flags flags
);
2469 /* See to_insn_history_from. */
2470 extern void target_insn_history_from (ULONGEST from
, int size
,
2471 gdb_disassembly_flags flags
);
2473 /* See to_insn_history_range. */
2474 extern void target_insn_history_range (ULONGEST begin
, ULONGEST end
,
2475 gdb_disassembly_flags flags
);
2477 /* See to_call_history. */
2478 extern void target_call_history (int size
, record_print_flags flags
);
2480 /* See to_call_history_from. */
2481 extern void target_call_history_from (ULONGEST begin
, int size
,
2482 record_print_flags flags
);
2484 /* See to_call_history_range. */
2485 extern void target_call_history_range (ULONGEST begin
, ULONGEST end
,
2486 record_print_flags flags
);
2488 /* See to_prepare_to_generate_core. */
2489 extern void target_prepare_to_generate_core (void);
2491 /* See to_done_generating_core. */
2492 extern void target_done_generating_core (void);
2495 namespace selftests
{
2497 /* A mock process_stratum target_ops that doesn't read/write registers
2500 class test_target_ops
: public target_ops
2505 } // namespace selftests
2506 #endif /* GDB_SELF_TEST */
2508 #endif /* !defined (TARGET_H) */