1 /* Interface between GDB and target environments, including files and processes
3 Copyright (C) 1990-2023 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 trace_state_variable
;
36 struct static_tracepoint_marker
;
37 struct traceframe_info
;
42 /* Define const gdb_byte using one identifier, to make it easy for
43 make-target-delegates.py to parse. */
44 typedef const gdb_byte const_gdb_byte
;
46 #include "infrun.h" /* For enum exec_direction_kind. */
47 #include "breakpoint.h" /* For enum bptype. */
48 #include "gdbsupport/scoped_restore.h"
49 #include "gdbsupport/refcounted-object.h"
50 #include "target-section.h"
52 /* This include file defines the interface between the main part
53 of the debugger, and the part which is target-specific, or
54 specific to the communications interface between us and the
57 A TARGET is an interface between the debugger and a particular
58 kind of file or process. Targets can be STACKED in STRATA,
59 so that more than one target can potentially respond to a request.
60 In particular, memory accesses will walk down the stack of targets
61 until they find a target that is interested in handling that particular
62 address. STRATA are artificial boundaries on the stack, within
63 which particular kinds of targets live. Strata exist so that
64 people don't get confused by pushing e.g. a process target and then
65 a file target, and wondering why they can't see the current values
66 of variables any more (the file target is handling them and they
67 never get to the process target). So when you push a file target,
68 it goes into the file stratum, which is always below the process
71 Note that rather than allow an empty stack, we always have the
72 dummy target at the bottom stratum, so we can call the target
73 methods without checking them. */
75 #include "target/target.h"
76 #include "target/resume.h"
77 #include "target/wait.h"
78 #include "target/waitstatus.h"
82 #include "gdbsupport/gdb_signals.h"
86 #include "disasm-flags.h"
87 #include "tracepoint.h"
88 #include "gdbsupport/fileio.h"
90 #include "gdbsupport/break-common.h" /* For enum target_hw_bp_type. */
94 dummy_stratum
, /* The lowest of the low */
95 file_stratum
, /* Executable files, etc */
96 process_stratum
, /* Executing processes or core dump files */
97 thread_stratum
, /* Executing threads */
98 record_stratum
, /* Support record debugging */
99 arch_stratum
, /* Architecture overrides */
100 debug_stratum
/* Target debug. Must be last. */
103 enum thread_control_capabilities
105 tc_none
= 0, /* Default: can't control thread execution. */
106 tc_schedlock
= 1, /* Can lock the thread scheduler. */
109 /* The structure below stores information about a system call.
110 It is basically used in the "catch syscall" command, and in
111 every function that gives information about a system call.
113 It's also good to mention that its fields represent everything
114 that we currently know about a syscall in GDB. */
117 /* The syscall number. */
120 /* The syscall name. */
124 /* Return a pretty printed form of TARGET_OPTIONS. */
125 extern std::string
target_options_to_string (target_wait_flags target_options
);
127 /* Possible types of events that the inferior handler will have to
129 enum inferior_event_type
131 /* Process a normal inferior event which will result in target_wait
134 /* We are called to do stuff after the inferior stops. */
138 /* Target objects which can be transfered using target_read,
139 target_write, et cetera. */
143 /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */
145 /* Transfer up-to LEN bytes of memory starting at OFFSET. */
146 TARGET_OBJECT_MEMORY
,
147 /* Memory, avoiding GDB's data cache and trusting the executable.
148 Target implementations of to_xfer_partial never need to handle
149 this object, and most callers should not use it. */
150 TARGET_OBJECT_RAW_MEMORY
,
151 /* Memory known to be part of the target's stack. This is cached even
152 if it is not in a region marked as such, since it is known to be
154 TARGET_OBJECT_STACK_MEMORY
,
155 /* Memory known to be part of the target code. This is cached even
156 if it is not in a region marked as such. */
157 TARGET_OBJECT_CODE_MEMORY
,
158 /* Kernel Unwind Table. See "ia64-tdep.c". */
159 TARGET_OBJECT_UNWIND_TABLE
,
160 /* Transfer auxilliary vector. */
162 /* StackGhost cookie. See "sparc-tdep.c". */
163 TARGET_OBJECT_WCOOKIE
,
164 /* Target memory map in XML format. */
165 TARGET_OBJECT_MEMORY_MAP
,
166 /* Flash memory. This object can be used to write contents to
167 a previously erased flash memory. Using it without erasing
168 flash can have unexpected results. Addresses are physical
169 address on target, and not relative to flash start. */
171 /* Available target-specific features, e.g. registers and coprocessors.
172 See "target-descriptions.c". ANNEX should never be empty. */
173 TARGET_OBJECT_AVAILABLE_FEATURES
,
174 /* Currently loaded libraries, in XML format. */
175 TARGET_OBJECT_LIBRARIES
,
176 /* Currently loaded libraries specific for SVR4 systems, in XML format. */
177 TARGET_OBJECT_LIBRARIES_SVR4
,
178 /* Currently loaded libraries specific to AIX systems, in XML format. */
179 TARGET_OBJECT_LIBRARIES_AIX
,
180 /* Get OS specific data. The ANNEX specifies the type (running
181 processes, etc.). The data being transfered is expected to follow
182 the DTD specified in features/osdata.dtd. */
183 TARGET_OBJECT_OSDATA
,
184 /* Extra signal info. Usually the contents of `siginfo_t' on unix
186 TARGET_OBJECT_SIGNAL_INFO
,
187 /* The list of threads that are being debugged. */
188 TARGET_OBJECT_THREADS
,
189 /* Collected static trace data. */
190 TARGET_OBJECT_STATIC_TRACE_DATA
,
191 /* Traceframe info, in XML format. */
192 TARGET_OBJECT_TRACEFRAME_INFO
,
193 /* Load maps for FDPIC systems. */
195 /* Darwin dynamic linker info data. */
196 TARGET_OBJECT_DARWIN_DYLD_INFO
,
197 /* OpenVMS Unwind Information Block. */
198 TARGET_OBJECT_OPENVMS_UIB
,
199 /* Branch trace data, in XML format. */
200 TARGET_OBJECT_BTRACE
,
201 /* Branch trace configuration, in XML format. */
202 TARGET_OBJECT_BTRACE_CONF
,
203 /* The pathname of the executable file that was run to create
204 a specified process. ANNEX should be a string representation
205 of the process ID of the process in question, in hexadecimal
207 TARGET_OBJECT_EXEC_FILE
,
208 /* FreeBSD virtual memory mappings. */
209 TARGET_OBJECT_FREEBSD_VMMAP
,
210 /* FreeBSD process strings. */
211 TARGET_OBJECT_FREEBSD_PS_STRINGS
,
212 /* Possible future objects: TARGET_OBJECT_FILE, ... */
215 /* Possible values returned by target_xfer_partial, etc. */
217 enum target_xfer_status
219 /* Some bytes are transferred. */
222 /* No further transfer is possible. */
225 /* The piece of the object requested is unavailable. */
226 TARGET_XFER_UNAVAILABLE
= 2,
228 /* Generic I/O error. Note that it's important that this is '-1',
229 as we still have target_xfer-related code returning hardcoded
231 TARGET_XFER_E_IO
= -1,
233 /* Keep list in sync with target_xfer_status_to_string. */
236 /* Return the string form of STATUS. */
239 target_xfer_status_to_string (enum target_xfer_status status
);
241 typedef enum target_xfer_status
242 target_xfer_partial_ftype (struct target_ops
*ops
,
243 enum target_object object
,
246 const gdb_byte
*writebuf
,
249 ULONGEST
*xfered_len
);
251 enum target_xfer_status
252 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
253 const gdb_byte
*writebuf
, ULONGEST memaddr
,
254 LONGEST len
, ULONGEST
*xfered_len
);
256 /* Request that OPS transfer up to LEN addressable units of the target's
257 OBJECT. When reading from a memory object, the size of an addressable unit
258 is architecture dependent and can be found using
259 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is 1
260 byte long. BUF should point to a buffer large enough to hold the read data,
261 taking into account the addressable unit size. The OFFSET, for a seekable
262 object, specifies the starting point. The ANNEX can be used to provide
263 additional data-specific information to the target.
265 Return the number of addressable units actually transferred, or a negative
266 error code (an 'enum target_xfer_error' value) if the transfer is not
267 supported or otherwise fails. Return of a positive value less than
268 LEN indicates that no further transfer is possible. Unlike the raw
269 to_xfer_partial interface, callers of these functions do not need
270 to retry partial transfers. */
272 extern LONGEST
target_read (struct target_ops
*ops
,
273 enum target_object object
,
274 const char *annex
, gdb_byte
*buf
,
275 ULONGEST offset
, LONGEST len
);
277 struct memory_read_result
279 memory_read_result (ULONGEST begin_
, ULONGEST end_
,
280 gdb::unique_xmalloc_ptr
<gdb_byte
> &&data_
)
283 data (std::move (data_
))
287 ~memory_read_result () = default;
289 memory_read_result (memory_read_result
&&other
) = default;
291 DISABLE_COPY_AND_ASSIGN (memory_read_result
);
293 /* First address that was read. */
295 /* Past-the-end address. */
298 gdb::unique_xmalloc_ptr
<gdb_byte
> data
;
301 extern std::vector
<memory_read_result
> read_memory_robust
302 (struct target_ops
*ops
, const ULONGEST offset
, const LONGEST len
);
304 /* Request that OPS transfer up to LEN addressable units from BUF to the
305 target's OBJECT. When writing to a memory object, the addressable unit
306 size is architecture dependent and can be found using
307 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is 1
308 byte long. The OFFSET, for a seekable object, specifies the starting point.
309 The ANNEX can be used to provide additional data-specific information to
312 Return the number of addressable units actually transferred, or a negative
313 error code (an 'enum target_xfer_status' value) if the transfer is not
314 supported or otherwise fails. Return of a positive value less than
315 LEN indicates that no further transfer is possible. Unlike the raw
316 to_xfer_partial interface, callers of these functions do not need to
317 retry partial transfers. */
319 extern LONGEST
target_write (struct target_ops
*ops
,
320 enum target_object object
,
321 const char *annex
, const gdb_byte
*buf
,
322 ULONGEST offset
, LONGEST len
);
324 /* Similar to target_write, except that it also calls PROGRESS with
325 the number of bytes written and the opaque BATON after every
326 successful partial write (and before the first write). This is
327 useful for progress reporting and user interaction while writing
328 data. To abort the transfer, the progress callback can throw an
331 LONGEST
target_write_with_progress (struct target_ops
*ops
,
332 enum target_object object
,
333 const char *annex
, const gdb_byte
*buf
,
334 ULONGEST offset
, LONGEST len
,
335 void (*progress
) (ULONGEST
, void *),
338 /* Wrapper to perform a full read of unknown size. OBJECT/ANNEX will be read
339 using OPS. The return value will be uninstantiated if the transfer fails or
342 This method should be used for objects sufficiently small to store
343 in a single xmalloc'd buffer, when no fixed bound on the object's
344 size is known in advance. Don't try to read TARGET_OBJECT_MEMORY
345 through this function. */
347 extern gdb::optional
<gdb::byte_vector
> target_read_alloc
348 (struct target_ops
*ops
, enum target_object object
, const char *annex
);
350 /* Read OBJECT/ANNEX using OPS. The result is a NUL-terminated character vector
351 (therefore usable as a NUL-terminated string). If an error occurs or the
352 transfer is unsupported, the return value will be uninstantiated. Empty
353 objects are returned as allocated but empty strings. Therefore, on success,
354 the returned vector is guaranteed to have at least one element. A warning is
355 issued if the result contains any embedded NUL bytes. */
357 extern gdb::optional
<gdb::char_vector
> target_read_stralloc
358 (struct target_ops
*ops
, enum target_object object
, const char *annex
);
360 /* See target_ops->to_xfer_partial. */
361 extern target_xfer_partial_ftype target_xfer_partial
;
363 /* Wrappers to target read/write that perform memory transfers. They
364 throw an error if the memory transfer fails.
366 NOTE: cagney/2003-10-23: The naming schema is lifted from
367 "frame.h". The parameter order is lifted from get_frame_memory,
368 which in turn lifted it from read_memory. */
370 extern void get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
,
371 gdb_byte
*buf
, LONGEST len
);
372 extern ULONGEST
get_target_memory_unsigned (struct target_ops
*ops
,
373 CORE_ADDR addr
, int len
,
374 enum bfd_endian byte_order
);
376 struct thread_info
; /* fwd decl for parameter list below: */
378 /* The type of the callback to the to_async method. */
380 typedef void async_callback_ftype (enum inferior_event_type event_type
,
383 /* Normally target debug printing is purely type-based. However,
384 sometimes it is necessary to override the debug printing on a
385 per-argument basis. This macro can be used, attribute-style, to
386 name the target debug printing function for a particular method
387 argument. FUNC is the name of the function. The macro's
388 definition is empty because it is only used by the
389 make-target-delegates script. */
391 #define TARGET_DEBUG_PRINTER(FUNC)
393 /* These defines are used to mark target_ops methods. The script
394 make-target-delegates scans these and auto-generates the base
395 method implementations. There are four macros that can be used:
397 1. TARGET_DEFAULT_IGNORE. There is no argument. The base method
398 does nothing. This is only valid if the method return type is
401 2. TARGET_DEFAULT_NORETURN. The argument is a function call, like
402 'tcomplain ()'. The base method simply makes this call, which is
403 assumed not to return.
405 3. TARGET_DEFAULT_RETURN. The argument is a C expression. The
406 base method returns this expression's value.
408 4. TARGET_DEFAULT_FUNC. The argument is the name of a function.
409 make-target-delegates does not generate a base method in this case,
410 but instead uses the argument function as the base method. */
412 #define TARGET_DEFAULT_IGNORE()
413 #define TARGET_DEFAULT_NORETURN(ARG)
414 #define TARGET_DEFAULT_RETURN(ARG)
415 #define TARGET_DEFAULT_FUNC(ARG)
417 /* Each target that can be activated with "target TARGET_NAME" passes
418 the address of one of these objects to add_target, which uses the
419 object's address as unique identifier, and registers the "target
420 TARGET_NAME" command using SHORTNAME as target name. */
424 /* Name of this target. */
425 const char *shortname
;
427 /* Name for printing. */
428 const char *longname
;
430 /* Documentation. Does not include trailing newline, and starts
431 with a one-line description (probably similar to longname). */
436 : public refcounted_object
438 /* Return this target's stratum. */
439 virtual strata
stratum () const = 0;
441 /* To the target under this one. */
442 target_ops
*beneath () const;
444 /* Free resources associated with the target. Note that singleton
445 targets, like e.g., native targets, are global objects, not
446 heap allocated, and are thus only deleted on GDB exit. The
447 main teardown entry point is the "close" method, below. */
448 virtual ~target_ops () {}
450 /* Return a reference to this target's unique target_info
452 virtual const target_info
&info () const = 0;
454 /* Name this target type. */
455 const char *shortname () const
456 { return info ().shortname
; }
458 const char *longname () const
459 { return info ().longname
; }
461 /* Close the target. This is where the target can handle
462 teardown. Heap-allocated targets should delete themselves
464 virtual void close ();
466 /* Attaches to a process on the target side. Arguments are as
467 passed to the `attach' command by the user. This routine can
468 be called when the target is not on the target-stack, if the
469 target_ops::can_run method returns 1; in that case, it must push
470 itself onto the stack. Upon exit, the target should be ready
471 for normal operations, and should be ready to deliver the
472 status of the process immediately (without waiting) to an
473 upcoming target_wait call. */
474 virtual bool can_attach ();
475 virtual void attach (const char *, int);
476 virtual void post_attach (int)
477 TARGET_DEFAULT_IGNORE ();
479 /* Detaches from the inferior. Note that on targets that support
480 async execution (i.e., targets where it is possible to detach
481 from programs with threads running), the target is responsible
482 for removing breakpoints from the program before the actual
483 detach, otherwise the program dies when it hits one. */
484 virtual void detach (inferior
*, int)
485 TARGET_DEFAULT_IGNORE ();
487 virtual void disconnect (const char *, int)
488 TARGET_DEFAULT_NORETURN (tcomplain ());
489 virtual void resume (ptid_t
,
490 int TARGET_DEBUG_PRINTER (target_debug_print_step
),
492 TARGET_DEFAULT_NORETURN (noprocess ());
494 /* Ensure that all resumed threads are committed to the target.
496 See the description of
497 process_stratum_target::commit_resumed_state for more
499 virtual void commit_resumed ()
500 TARGET_DEFAULT_IGNORE ();
502 /* See target_wait's description. Note that implementations of
503 this method must not assume that inferior_ptid on entry is
504 pointing at the thread or inferior that ends up reporting an
505 event. The reported event could be for some other thread in
506 the current inferior or even for a different process of the
507 current target. inferior_ptid may also be null_ptid on
509 virtual ptid_t
wait (ptid_t
, struct target_waitstatus
*,
510 target_wait_flags options
)
511 TARGET_DEFAULT_FUNC (default_target_wait
);
512 virtual void fetch_registers (struct regcache
*, int)
513 TARGET_DEFAULT_IGNORE ();
514 virtual void store_registers (struct regcache
*, int)
515 TARGET_DEFAULT_NORETURN (noprocess ());
516 virtual void prepare_to_store (struct regcache
*)
517 TARGET_DEFAULT_NORETURN (noprocess ());
519 virtual void files_info ()
520 TARGET_DEFAULT_IGNORE ();
521 virtual int insert_breakpoint (struct gdbarch
*,
522 struct bp_target_info
*)
523 TARGET_DEFAULT_NORETURN (noprocess ());
524 virtual int remove_breakpoint (struct gdbarch
*,
525 struct bp_target_info
*,
526 enum remove_bp_reason
)
527 TARGET_DEFAULT_NORETURN (noprocess ());
529 /* Returns true if the target stopped because it executed a
530 software breakpoint. This is necessary for correct background
531 execution / non-stop mode operation, and for correct PC
532 adjustment on targets where the PC needs to be adjusted when a
533 software breakpoint triggers. In these modes, by the time GDB
534 processes a breakpoint event, the breakpoint may already be
535 done from the target, so GDB needs to be able to tell whether
536 it should ignore the event and whether it should adjust the PC.
537 See adjust_pc_after_break. */
538 virtual bool stopped_by_sw_breakpoint ()
539 TARGET_DEFAULT_RETURN (false);
540 /* Returns true if the above method is supported. */
541 virtual bool supports_stopped_by_sw_breakpoint ()
542 TARGET_DEFAULT_RETURN (false);
544 /* Returns true if the target stopped for a hardware breakpoint.
545 Likewise, if the target supports hardware breakpoints, this
546 method is necessary for correct background execution / non-stop
547 mode operation. Even though hardware breakpoints do not
548 require PC adjustment, GDB needs to be able to tell whether the
549 hardware breakpoint event is a delayed event for a breakpoint
550 that is already gone and should thus be ignored. */
551 virtual bool stopped_by_hw_breakpoint ()
552 TARGET_DEFAULT_RETURN (false);
553 /* Returns true if the above method is supported. */
554 virtual bool supports_stopped_by_hw_breakpoint ()
555 TARGET_DEFAULT_RETURN (false);
557 virtual int can_use_hw_breakpoint (enum bptype
, int, int)
558 TARGET_DEFAULT_RETURN (0);
559 virtual int ranged_break_num_registers ()
560 TARGET_DEFAULT_RETURN (-1);
561 virtual int insert_hw_breakpoint (struct gdbarch
*,
562 struct bp_target_info
*)
563 TARGET_DEFAULT_RETURN (-1);
564 virtual int remove_hw_breakpoint (struct gdbarch
*,
565 struct bp_target_info
*)
566 TARGET_DEFAULT_RETURN (-1);
568 /* Documentation of what the two routines below are expected to do is
569 provided with the corresponding target_* macros. */
570 virtual int remove_watchpoint (CORE_ADDR
, int,
571 enum target_hw_bp_type
, struct expression
*)
572 TARGET_DEFAULT_RETURN (-1);
573 virtual int insert_watchpoint (CORE_ADDR
, int,
574 enum target_hw_bp_type
, struct expression
*)
575 TARGET_DEFAULT_RETURN (-1);
577 virtual int insert_mask_watchpoint (CORE_ADDR
, CORE_ADDR
,
578 enum target_hw_bp_type
)
579 TARGET_DEFAULT_RETURN (1);
580 virtual int remove_mask_watchpoint (CORE_ADDR
, CORE_ADDR
,
581 enum target_hw_bp_type
)
582 TARGET_DEFAULT_RETURN (1);
583 virtual bool stopped_by_watchpoint ()
584 TARGET_DEFAULT_RETURN (false);
585 virtual bool have_steppable_watchpoint ()
586 TARGET_DEFAULT_RETURN (false);
587 virtual bool stopped_data_address (CORE_ADDR
*)
588 TARGET_DEFAULT_RETURN (false);
589 virtual bool watchpoint_addr_within_range (CORE_ADDR
, CORE_ADDR
, int)
590 TARGET_DEFAULT_FUNC (default_watchpoint_addr_within_range
);
592 /* Documentation of this routine is provided with the corresponding
594 virtual int region_ok_for_hw_watchpoint (CORE_ADDR
, int)
595 TARGET_DEFAULT_FUNC (default_region_ok_for_hw_watchpoint
);
597 virtual bool can_accel_watchpoint_condition (CORE_ADDR
, int, int,
599 TARGET_DEFAULT_RETURN (false);
600 virtual int masked_watch_num_registers (CORE_ADDR
, CORE_ADDR
)
601 TARGET_DEFAULT_RETURN (-1);
603 /* Return 1 for sure target can do single step. Return -1 for
604 unknown. Return 0 for target can't do. */
605 virtual int can_do_single_step ()
606 TARGET_DEFAULT_RETURN (-1);
608 virtual bool supports_terminal_ours ()
609 TARGET_DEFAULT_RETURN (false);
610 virtual void terminal_init ()
611 TARGET_DEFAULT_IGNORE ();
612 virtual void terminal_inferior ()
613 TARGET_DEFAULT_IGNORE ();
614 virtual void terminal_save_inferior ()
615 TARGET_DEFAULT_IGNORE ();
616 virtual void terminal_ours_for_output ()
617 TARGET_DEFAULT_IGNORE ();
618 virtual void terminal_ours ()
619 TARGET_DEFAULT_IGNORE ();
620 virtual void terminal_info (const char *, int)
621 TARGET_DEFAULT_FUNC (default_terminal_info
);
623 TARGET_DEFAULT_NORETURN (noprocess ());
624 virtual void load (const char *, int)
625 TARGET_DEFAULT_NORETURN (tcomplain ());
626 /* Start an inferior process and set inferior_ptid to its pid.
627 EXEC_FILE is the file to run.
628 ALLARGS is a string containing the arguments to the program.
629 ENV is the environment vector to pass. Errors reported with error().
630 On VxWorks and various standalone systems, we ignore exec_file. */
631 virtual bool can_create_inferior ();
632 virtual void create_inferior (const char *, const std::string
&,
634 virtual int insert_fork_catchpoint (int)
635 TARGET_DEFAULT_RETURN (1);
636 virtual int remove_fork_catchpoint (int)
637 TARGET_DEFAULT_RETURN (1);
638 virtual int insert_vfork_catchpoint (int)
639 TARGET_DEFAULT_RETURN (1);
640 virtual int remove_vfork_catchpoint (int)
641 TARGET_DEFAULT_RETURN (1);
642 virtual void follow_fork (inferior
*, ptid_t
, target_waitkind
, bool, bool)
643 TARGET_DEFAULT_FUNC (default_follow_fork
);
644 virtual int insert_exec_catchpoint (int)
645 TARGET_DEFAULT_RETURN (1);
646 virtual int remove_exec_catchpoint (int)
647 TARGET_DEFAULT_RETURN (1);
648 virtual void follow_exec (inferior
*, ptid_t
, const char *)
649 TARGET_DEFAULT_IGNORE ();
650 virtual int set_syscall_catchpoint (int, bool, int,
651 gdb::array_view
<const int>)
652 TARGET_DEFAULT_RETURN (1);
653 virtual void mourn_inferior ()
654 TARGET_DEFAULT_FUNC (default_mourn_inferior
);
656 /* Note that can_run is special and can be invoked on an unpushed
657 target. Targets defining this method must also define
658 to_can_async_p and to_supports_non_stop. */
659 virtual bool can_run ();
661 /* Documentation of this routine is provided with the corresponding
663 virtual void pass_signals (gdb::array_view
<const unsigned char> TARGET_DEBUG_PRINTER (target_debug_print_signals
))
664 TARGET_DEFAULT_IGNORE ();
666 /* Documentation of this routine is provided with the
667 corresponding target_* function. */
668 virtual void program_signals (gdb::array_view
<const unsigned char> TARGET_DEBUG_PRINTER (target_debug_print_signals
))
669 TARGET_DEFAULT_IGNORE ();
671 virtual bool thread_alive (ptid_t ptid
)
672 TARGET_DEFAULT_RETURN (false);
673 virtual void update_thread_list ()
674 TARGET_DEFAULT_IGNORE ();
675 virtual std::string
pid_to_str (ptid_t
)
676 TARGET_DEFAULT_FUNC (default_pid_to_str
);
677 virtual const char *extra_thread_info (thread_info
*)
678 TARGET_DEFAULT_RETURN (NULL
);
679 virtual const char *thread_name (thread_info
*)
680 TARGET_DEFAULT_RETURN (NULL
);
681 virtual thread_info
*thread_handle_to_thread_info (const gdb_byte
*,
684 TARGET_DEFAULT_RETURN (NULL
);
685 /* See target_thread_info_to_thread_handle. */
686 virtual gdb::array_view
<const_gdb_byte
> thread_info_to_thread_handle (struct thread_info
*)
687 TARGET_DEFAULT_RETURN (gdb::array_view
<const gdb_byte
> ());
688 virtual void stop (ptid_t
)
689 TARGET_DEFAULT_IGNORE ();
690 virtual void interrupt ()
691 TARGET_DEFAULT_IGNORE ();
692 virtual void pass_ctrlc ()
693 TARGET_DEFAULT_FUNC (default_target_pass_ctrlc
);
694 virtual void rcmd (const char *command
, struct ui_file
*output
)
695 TARGET_DEFAULT_FUNC (default_rcmd
);
696 virtual const char *pid_to_exec_file (int pid
)
697 TARGET_DEFAULT_RETURN (NULL
);
698 virtual void log_command (const char *)
699 TARGET_DEFAULT_IGNORE ();
700 virtual const target_section_table
*get_section_table ()
701 TARGET_DEFAULT_RETURN (default_get_section_table ());
703 /* Provide default values for all "must have" methods. */
704 virtual bool has_all_memory () { return false; }
705 virtual bool has_memory () { return false; }
706 virtual bool has_stack () { return false; }
707 virtual bool has_registers () { return false; }
708 virtual bool has_execution (inferior
*inf
) { return false; }
710 /* Control thread execution. */
711 virtual thread_control_capabilities
get_thread_control_capabilities ()
712 TARGET_DEFAULT_RETURN (tc_none
);
713 virtual bool attach_no_wait ()
714 TARGET_DEFAULT_RETURN (0);
715 /* This method must be implemented in some situations. See the
716 comment on 'can_run'. */
717 virtual bool can_async_p ()
718 TARGET_DEFAULT_RETURN (false);
719 virtual bool is_async_p ()
720 TARGET_DEFAULT_RETURN (false);
721 virtual void async (bool)
722 TARGET_DEFAULT_NORETURN (tcomplain ());
723 virtual int async_wait_fd ()
724 TARGET_DEFAULT_NORETURN (noprocess ());
725 /* Return true if the target has pending events to report to the
726 core. If true, then GDB avoids resuming the target until all
727 pending events are consumed, so that multiple resumptions can
728 be coalesced as an optimization. Most targets can't tell
729 whether they have pending events without calling target_wait,
730 so we default to returning false. The only downside is that a
731 potential optimization is missed. */
732 virtual bool has_pending_events ()
733 TARGET_DEFAULT_RETURN (false);
734 virtual void thread_events (int)
735 TARGET_DEFAULT_IGNORE ();
736 /* This method must be implemented in some situations. See the
737 comment on 'can_run'. */
738 virtual bool supports_non_stop ()
739 TARGET_DEFAULT_RETURN (false);
740 /* Return true if the target operates in non-stop mode even with
741 "set non-stop off". */
742 virtual bool always_non_stop_p ()
743 TARGET_DEFAULT_RETURN (false);
744 /* find_memory_regions support method for gcore */
745 virtual int find_memory_regions (find_memory_region_ftype func
, void *data
)
746 TARGET_DEFAULT_FUNC (dummy_find_memory_regions
);
747 /* make_corefile_notes support method for gcore */
748 virtual gdb::unique_xmalloc_ptr
<char> make_corefile_notes (bfd
*, int *)
749 TARGET_DEFAULT_FUNC (dummy_make_corefile_notes
);
750 /* get_bookmark support method for bookmarks */
751 virtual gdb_byte
*get_bookmark (const char *, int)
752 TARGET_DEFAULT_NORETURN (tcomplain ());
753 /* goto_bookmark support method for bookmarks */
754 virtual void goto_bookmark (const gdb_byte
*, int)
755 TARGET_DEFAULT_NORETURN (tcomplain ());
756 /* Return the thread-local address at OFFSET in the
757 thread-local storage for the thread PTID and the shared library
758 or executable file given by LOAD_MODULE_ADDR. If that block of
759 thread-local storage hasn't been allocated yet, this function
760 may throw an error. LOAD_MODULE_ADDR may be zero for statically
761 linked multithreaded inferiors. */
762 virtual CORE_ADDR
get_thread_local_address (ptid_t ptid
,
763 CORE_ADDR load_module_addr
,
765 TARGET_DEFAULT_NORETURN (generic_tls_error ());
767 /* Request that OPS transfer up to LEN addressable units of the target's
768 OBJECT. When reading from a memory object, the size of an addressable
769 unit is architecture dependent and can be found using
770 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is
771 1 byte long. The OFFSET, for a seekable object, specifies the
772 starting point. The ANNEX can be used to provide additional
773 data-specific information to the target.
775 Return the transferred status, error or OK (an
776 'enum target_xfer_status' value). Save the number of addressable units
777 actually transferred in *XFERED_LEN if transfer is successful
778 (TARGET_XFER_OK) or the number unavailable units if the requested
779 data is unavailable (TARGET_XFER_UNAVAILABLE). *XFERED_LEN
780 smaller than LEN does not indicate the end of the object, only
781 the end of the transfer; higher level code should continue
782 transferring if desired. This is handled in target.c.
784 The interface does not support a "retry" mechanism. Instead it
785 assumes that at least one addressable unit will be transfered on each
788 NOTE: cagney/2003-10-17: The current interface can lead to
789 fragmented transfers. Lower target levels should not implement
790 hacks, such as enlarging the transfer, in an attempt to
791 compensate for this. Instead, the target stack should be
792 extended so that it implements supply/collect methods and a
793 look-aside object cache. With that available, the lowest
794 target can safely and freely "push" data up the stack.
796 See target_read and target_write for more information. One,
797 and only one, of readbuf or writebuf must be non-NULL. */
799 virtual enum target_xfer_status
xfer_partial (enum target_object object
,
802 const gdb_byte
*writebuf
,
803 ULONGEST offset
, ULONGEST len
,
804 ULONGEST
*xfered_len
)
805 TARGET_DEFAULT_RETURN (TARGET_XFER_E_IO
);
807 /* Return the limit on the size of any single memory transfer
810 virtual ULONGEST
get_memory_xfer_limit ()
811 TARGET_DEFAULT_RETURN (ULONGEST_MAX
);
813 /* Returns the memory map for the target. A return value of NULL
814 means that no memory map is available. If a memory address
815 does not fall within any returned regions, it's assumed to be
816 RAM. The returned memory regions should not overlap.
818 The order of regions does not matter; target_memory_map will
819 sort regions by starting address. For that reason, this
820 function should not be called directly except via
823 This method should not cache data; if the memory map could
824 change unexpectedly, it should be invalidated, and higher
825 layers will re-fetch it. */
826 virtual std::vector
<mem_region
> memory_map ()
827 TARGET_DEFAULT_RETURN (std::vector
<mem_region
> ());
829 /* Erases the region of flash memory starting at ADDRESS, of
832 Precondition: both ADDRESS and ADDRESS+LENGTH should be aligned
833 on flash block boundaries, as reported by 'to_memory_map'. */
834 virtual void flash_erase (ULONGEST address
, LONGEST length
)
835 TARGET_DEFAULT_NORETURN (tcomplain ());
837 /* Finishes a flash memory write sequence. After this operation
838 all flash memory should be available for writing and the result
839 of reading from areas written by 'to_flash_write' should be
840 equal to what was written. */
841 virtual void flash_done ()
842 TARGET_DEFAULT_NORETURN (tcomplain ());
844 /* Describe the architecture-specific features of the current
847 Returns the description found, or nullptr if no description was
850 If some target features differ between threads, the description
851 returned by read_description (and the resulting gdbarch) won't
852 accurately describe all threads. In this case, the
853 thread_architecture method can be used to obtain gdbarches that
854 accurately describe each thread. */
855 virtual const struct target_desc
*read_description ()
856 TARGET_DEFAULT_RETURN (NULL
);
858 /* Build the PTID of the thread on which a given task is running,
859 based on LWP and THREAD. These values are extracted from the
860 task Private_Data section of the Ada Task Control Block, and
861 their interpretation depends on the target. */
862 virtual ptid_t
get_ada_task_ptid (long lwp
, ULONGEST thread
)
863 TARGET_DEFAULT_FUNC (default_get_ada_task_ptid
);
865 /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
866 Return 0 if *READPTR is already at the end of the buffer.
867 Return -1 if there is insufficient buffer for a whole entry.
868 Return 1 if an entry was read into *TYPEP and *VALP. */
869 virtual int auxv_parse (const gdb_byte
**readptr
,
870 const gdb_byte
*endptr
, CORE_ADDR
*typep
, CORE_ADDR
*valp
)
871 TARGET_DEFAULT_FUNC (default_auxv_parse
);
873 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
874 sequence of bytes in PATTERN with length PATTERN_LEN.
876 The result is 1 if found, 0 if not found, and -1 if there was an error
877 requiring halting of the search (e.g. memory read error).
878 If the pattern is found the address is recorded in FOUND_ADDRP. */
879 virtual int search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
880 const gdb_byte
*pattern
, ULONGEST pattern_len
,
881 CORE_ADDR
*found_addrp
)
882 TARGET_DEFAULT_FUNC (default_search_memory
);
884 /* Can target execute in reverse? */
885 virtual bool can_execute_reverse ()
886 TARGET_DEFAULT_RETURN (false);
888 /* The direction the target is currently executing. Must be
889 implemented on targets that support reverse execution and async
890 mode. The default simply returns forward execution. */
891 virtual enum exec_direction_kind
execution_direction ()
892 TARGET_DEFAULT_FUNC (default_execution_direction
);
894 /* Does this target support debugging multiple processes
896 virtual bool supports_multi_process ()
897 TARGET_DEFAULT_RETURN (false);
899 /* Does this target support enabling and disabling tracepoints while a trace
900 experiment is running? */
901 virtual bool supports_enable_disable_tracepoint ()
902 TARGET_DEFAULT_RETURN (false);
904 /* Does this target support disabling address space randomization? */
905 virtual bool supports_disable_randomization ()
906 TARGET_DEFAULT_FUNC (find_default_supports_disable_randomization
);
908 /* Does this target support the tracenz bytecode for string collection? */
909 virtual bool supports_string_tracing ()
910 TARGET_DEFAULT_RETURN (false);
912 /* Does this target support evaluation of breakpoint conditions on its
914 virtual bool supports_evaluation_of_breakpoint_conditions ()
915 TARGET_DEFAULT_RETURN (false);
917 /* Does this target support native dumpcore API? */
918 virtual bool supports_dumpcore ()
919 TARGET_DEFAULT_RETURN (false);
921 /* Generate the core file with native target API. */
922 virtual void dumpcore (const char *filename
)
923 TARGET_DEFAULT_IGNORE ();
925 /* Does this target support evaluation of breakpoint commands on its
927 virtual bool can_run_breakpoint_commands ()
928 TARGET_DEFAULT_RETURN (false);
930 /* Determine current architecture of thread PTID.
932 The target is supposed to determine the architecture of the code where
933 the target is currently stopped at. The architecture information is
934 used to perform decr_pc_after_break adjustment, and also to determine
935 the frame architecture of the innermost frame. ptrace operations need to
936 operate according to target_gdbarch (). */
937 virtual struct gdbarch
*thread_architecture (ptid_t
)
938 TARGET_DEFAULT_RETURN (NULL
);
940 /* Determine current address space of thread PTID. */
941 virtual struct address_space
*thread_address_space (ptid_t
)
942 TARGET_DEFAULT_RETURN (NULL
);
944 /* Target file operations. */
946 /* Return true if the filesystem seen by the current inferior
947 is the local filesystem, false otherwise. */
948 virtual bool filesystem_is_local ()
949 TARGET_DEFAULT_RETURN (true);
951 /* Open FILENAME on the target, in the filesystem as seen by INF,
952 using FLAGS and MODE. If INF is NULL, use the filesystem seen
953 by the debugger (GDB or, for remote targets, the remote stub).
954 If WARN_IF_SLOW is nonzero, print a warning message if the file
955 is being accessed over a link that may be slow. Return a
956 target file descriptor, or -1 if an error occurs (and set
958 virtual int fileio_open (struct inferior
*inf
, const char *filename
,
959 int flags
, int mode
, int warn_if_slow
,
960 fileio_error
*target_errno
);
962 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
963 Return the number of bytes written, or -1 if an error occurs
964 (and set *TARGET_ERRNO). */
965 virtual int fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
966 ULONGEST offset
, fileio_error
*target_errno
);
968 /* Read up to LEN bytes FD on the target into READ_BUF.
969 Return the number of bytes read, or -1 if an error occurs
970 (and set *TARGET_ERRNO). */
971 virtual int fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
972 ULONGEST offset
, fileio_error
*target_errno
);
974 /* Get information about the file opened as FD and put it in
975 SB. Return 0 on success, or -1 if an error occurs (and set
977 virtual int fileio_fstat (int fd
, struct stat
*sb
, fileio_error
*target_errno
);
979 /* Close FD on the target. Return 0, or -1 if an error occurs
980 (and set *TARGET_ERRNO). */
981 virtual int fileio_close (int fd
, fileio_error
*target_errno
);
983 /* Unlink FILENAME on the target, in the filesystem as seen by
984 INF. If INF is NULL, use the filesystem seen by the debugger
985 (GDB or, for remote targets, the remote stub). Return 0, or
986 -1 if an error occurs (and set *TARGET_ERRNO). */
987 virtual int fileio_unlink (struct inferior
*inf
,
988 const char *filename
,
989 fileio_error
*target_errno
);
991 /* Read value of symbolic link FILENAME on the target, in the
992 filesystem as seen by INF. If INF is NULL, use the filesystem
993 seen by the debugger (GDB or, for remote targets, the remote
994 stub). Return a string, or an empty optional if an error
995 occurs (and set *TARGET_ERRNO). */
996 virtual gdb::optional
<std::string
> fileio_readlink (struct inferior
*inf
,
997 const char *filename
,
998 fileio_error
*target_errno
);
1000 /* Implement the "info proc" command. Returns true if the target
1001 actually implemented the command, false otherwise. */
1002 virtual bool info_proc (const char *, enum info_proc_what
);
1004 /* Tracepoint-related operations. */
1006 /* Prepare the target for a tracing run. */
1007 virtual void trace_init ()
1008 TARGET_DEFAULT_NORETURN (tcomplain ());
1010 /* Send full details of a tracepoint location to the target. */
1011 virtual void download_tracepoint (struct bp_location
*location
)
1012 TARGET_DEFAULT_NORETURN (tcomplain ());
1014 /* Is the target able to download tracepoint locations in current
1016 virtual bool can_download_tracepoint ()
1017 TARGET_DEFAULT_RETURN (false);
1019 /* Send full details of a trace state variable to the target. */
1020 virtual void download_trace_state_variable (const trace_state_variable
&tsv
)
1021 TARGET_DEFAULT_NORETURN (tcomplain ());
1023 /* Enable a tracepoint on the target. */
1024 virtual void enable_tracepoint (struct bp_location
*location
)
1025 TARGET_DEFAULT_NORETURN (tcomplain ());
1027 /* Disable a tracepoint on the target. */
1028 virtual void disable_tracepoint (struct bp_location
*location
)
1029 TARGET_DEFAULT_NORETURN (tcomplain ());
1031 /* Inform the target info of memory regions that are readonly
1032 (such as text sections), and so it should return data from
1033 those rather than look in the trace buffer. */
1034 virtual void trace_set_readonly_regions ()
1035 TARGET_DEFAULT_NORETURN (tcomplain ());
1037 /* Start a trace run. */
1038 virtual void trace_start ()
1039 TARGET_DEFAULT_NORETURN (tcomplain ());
1041 /* Get the current status of a tracing run. */
1042 virtual int get_trace_status (struct trace_status
*ts
)
1043 TARGET_DEFAULT_RETURN (-1);
1045 virtual void get_tracepoint_status (struct breakpoint
*tp
,
1046 struct uploaded_tp
*utp
)
1047 TARGET_DEFAULT_NORETURN (tcomplain ());
1049 /* Stop a trace run. */
1050 virtual void trace_stop ()
1051 TARGET_DEFAULT_NORETURN (tcomplain ());
1053 /* Ask the target to find a trace frame of the given type TYPE,
1054 using NUM, ADDR1, and ADDR2 as search parameters. Returns the
1055 number of the trace frame, and also the tracepoint number at
1056 TPP. If no trace frame matches, return -1. May throw if the
1058 virtual int trace_find (enum trace_find_type type
, int num
,
1059 CORE_ADDR addr1
, CORE_ADDR addr2
, int *tpp
)
1060 TARGET_DEFAULT_RETURN (-1);
1062 /* Get the value of the trace state variable number TSV, returning
1063 1 if the value is known and writing the value itself into the
1064 location pointed to by VAL, else returning 0. */
1065 virtual bool get_trace_state_variable_value (int tsv
, LONGEST
*val
)
1066 TARGET_DEFAULT_RETURN (false);
1068 virtual int save_trace_data (const char *filename
)
1069 TARGET_DEFAULT_NORETURN (tcomplain ());
1071 virtual int upload_tracepoints (struct uploaded_tp
**utpp
)
1072 TARGET_DEFAULT_RETURN (0);
1074 virtual int upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
1075 TARGET_DEFAULT_RETURN (0);
1077 virtual LONGEST
get_raw_trace_data (gdb_byte
*buf
,
1078 ULONGEST offset
, LONGEST len
)
1079 TARGET_DEFAULT_NORETURN (tcomplain ());
1081 /* Get the minimum length of instruction on which a fast tracepoint
1082 may be set on the target. If this operation is unsupported,
1083 return -1. If for some reason the minimum length cannot be
1084 determined, return 0. */
1085 virtual int get_min_fast_tracepoint_insn_len ()
1086 TARGET_DEFAULT_RETURN (-1);
1088 /* Set the target's tracing behavior in response to unexpected
1089 disconnection - set VAL to 1 to keep tracing, 0 to stop. */
1090 virtual void set_disconnected_tracing (int val
)
1091 TARGET_DEFAULT_IGNORE ();
1092 virtual void set_circular_trace_buffer (int val
)
1093 TARGET_DEFAULT_IGNORE ();
1094 /* Set the size of trace buffer in the target. */
1095 virtual void set_trace_buffer_size (LONGEST val
)
1096 TARGET_DEFAULT_IGNORE ();
1098 /* Add/change textual notes about the trace run, returning true if
1099 successful, false otherwise. */
1100 virtual bool set_trace_notes (const char *user
, const char *notes
,
1101 const char *stopnotes
)
1102 TARGET_DEFAULT_RETURN (false);
1104 /* Return the processor core that thread PTID was last seen on.
1105 This information is updated only when:
1106 - update_thread_list is called
1108 If the core cannot be determined -- either for the specified
1109 thread, or right now, or in this debug session, or for this
1110 target -- return -1. */
1111 virtual int core_of_thread (ptid_t ptid
)
1112 TARGET_DEFAULT_RETURN (-1);
1114 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range
1115 matches the contents of [DATA,DATA+SIZE). Returns 1 if there's
1116 a match, 0 if there's a mismatch, and -1 if an error is
1117 encountered while reading memory. */
1118 virtual int verify_memory (const gdb_byte
*data
,
1119 CORE_ADDR memaddr
, ULONGEST size
)
1120 TARGET_DEFAULT_FUNC (default_verify_memory
);
1122 /* Return the address of the start of the Thread Information Block
1123 a Windows OS specific feature. */
1124 virtual bool get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
1125 TARGET_DEFAULT_NORETURN (tcomplain ());
1127 /* Send the new settings of write permission variables. */
1128 virtual void set_permissions ()
1129 TARGET_DEFAULT_IGNORE ();
1131 /* Look for a static tracepoint marker at ADDR, and fill in MARKER
1132 with its details. Return true on success, false on failure. */
1133 virtual bool static_tracepoint_marker_at (CORE_ADDR
,
1134 static_tracepoint_marker
*marker
)
1135 TARGET_DEFAULT_RETURN (false);
1137 /* Return a vector of all tracepoints markers string id ID, or all
1138 markers if ID is NULL. */
1139 virtual std::vector
<static_tracepoint_marker
>
1140 static_tracepoint_markers_by_strid (const char *id
)
1141 TARGET_DEFAULT_NORETURN (tcomplain ());
1143 /* Return a traceframe info object describing the current
1144 traceframe's contents. This method should not cache data;
1145 higher layers take care of caching, invalidating, and
1146 re-fetching when necessary. */
1147 virtual traceframe_info_up
traceframe_info ()
1148 TARGET_DEFAULT_NORETURN (tcomplain ());
1150 /* Ask the target to use or not to use agent according to USE.
1151 Return true if successful, false otherwise. */
1152 virtual bool use_agent (bool use
)
1153 TARGET_DEFAULT_NORETURN (tcomplain ());
1155 /* Is the target able to use agent in current state? */
1156 virtual bool can_use_agent ()
1157 TARGET_DEFAULT_RETURN (false);
1159 /* Enable branch tracing for TP using CONF configuration.
1160 Return a branch trace target information struct for reading and for
1161 disabling branch trace. */
1162 virtual struct btrace_target_info
*enable_btrace (thread_info
*tp
,
1163 const struct btrace_config
*conf
)
1164 TARGET_DEFAULT_NORETURN (tcomplain ());
1166 /* Disable branch tracing and deallocate TINFO. */
1167 virtual void disable_btrace (struct btrace_target_info
*tinfo
)
1168 TARGET_DEFAULT_NORETURN (tcomplain ());
1170 /* Disable branch tracing and deallocate TINFO. This function is similar
1171 to to_disable_btrace, except that it is called during teardown and is
1172 only allowed to perform actions that are safe. A counter-example would
1173 be attempting to talk to a remote target. */
1174 virtual void teardown_btrace (struct btrace_target_info
*tinfo
)
1175 TARGET_DEFAULT_NORETURN (tcomplain ());
1177 /* Read branch trace data for the thread indicated by BTINFO into DATA.
1178 DATA is cleared before new trace is added. */
1179 virtual enum btrace_error
read_btrace (struct btrace_data
*data
,
1180 struct btrace_target_info
*btinfo
,
1181 enum btrace_read_type type
)
1182 TARGET_DEFAULT_NORETURN (tcomplain ());
1184 /* Get the branch trace configuration. */
1185 virtual const struct btrace_config
*btrace_conf (const struct btrace_target_info
*)
1186 TARGET_DEFAULT_RETURN (NULL
);
1188 /* Current recording method. */
1189 virtual enum record_method
record_method (ptid_t ptid
)
1190 TARGET_DEFAULT_RETURN (RECORD_METHOD_NONE
);
1192 /* Stop trace recording. */
1193 virtual void stop_recording ()
1194 TARGET_DEFAULT_IGNORE ();
1196 /* Print information about the recording. */
1197 virtual void info_record ()
1198 TARGET_DEFAULT_IGNORE ();
1200 /* Save the recorded execution trace into a file. */
1201 virtual void save_record (const char *filename
)
1202 TARGET_DEFAULT_NORETURN (tcomplain ());
1204 /* Delete the recorded execution trace from the current position
1206 virtual bool supports_delete_record ()
1207 TARGET_DEFAULT_RETURN (false);
1208 virtual void delete_record ()
1209 TARGET_DEFAULT_NORETURN (tcomplain ());
1211 /* Query if the record target is currently replaying PTID. */
1212 virtual bool record_is_replaying (ptid_t ptid
)
1213 TARGET_DEFAULT_RETURN (false);
1215 /* Query if the record target will replay PTID if it were resumed in
1216 execution direction DIR. */
1217 virtual bool record_will_replay (ptid_t ptid
, int dir
)
1218 TARGET_DEFAULT_RETURN (false);
1220 /* Stop replaying. */
1221 virtual void record_stop_replaying ()
1222 TARGET_DEFAULT_IGNORE ();
1224 /* Go to the begin of the execution trace. */
1225 virtual void goto_record_begin ()
1226 TARGET_DEFAULT_NORETURN (tcomplain ());
1228 /* Go to the end of the execution trace. */
1229 virtual void goto_record_end ()
1230 TARGET_DEFAULT_NORETURN (tcomplain ());
1232 /* Go to a specific location in the recorded execution trace. */
1233 virtual void goto_record (ULONGEST insn
)
1234 TARGET_DEFAULT_NORETURN (tcomplain ());
1236 /* Disassemble SIZE instructions in the recorded execution trace from
1237 the current position.
1238 If SIZE < 0, disassemble abs (SIZE) preceding instructions; otherwise,
1239 disassemble SIZE succeeding instructions. */
1240 virtual void insn_history (int size
, gdb_disassembly_flags flags
)
1241 TARGET_DEFAULT_NORETURN (tcomplain ());
1243 /* Disassemble SIZE instructions in the recorded execution trace around
1245 If SIZE < 0, disassemble abs (SIZE) instructions before FROM; otherwise,
1246 disassemble SIZE instructions after FROM. */
1247 virtual void insn_history_from (ULONGEST from
, int size
,
1248 gdb_disassembly_flags flags
)
1249 TARGET_DEFAULT_NORETURN (tcomplain ());
1251 /* Disassemble a section of the recorded execution trace from instruction
1252 BEGIN (inclusive) to instruction END (inclusive). */
1253 virtual void insn_history_range (ULONGEST begin
, ULONGEST end
,
1254 gdb_disassembly_flags flags
)
1255 TARGET_DEFAULT_NORETURN (tcomplain ());
1257 /* Print a function trace of the recorded execution trace.
1258 If SIZE < 0, print abs (SIZE) preceding functions; otherwise, print SIZE
1259 succeeding functions. */
1260 virtual void call_history (int size
, record_print_flags flags
)
1261 TARGET_DEFAULT_NORETURN (tcomplain ());
1263 /* Print a function trace of the recorded execution trace starting
1265 If SIZE < 0, print abs (SIZE) functions before FROM; otherwise, print
1266 SIZE functions after FROM. */
1267 virtual void call_history_from (ULONGEST begin
, int size
, record_print_flags flags
)
1268 TARGET_DEFAULT_NORETURN (tcomplain ());
1270 /* Print a function trace of an execution trace section from function BEGIN
1271 (inclusive) to function END (inclusive). */
1272 virtual void call_history_range (ULONGEST begin
, ULONGEST end
, record_print_flags flags
)
1273 TARGET_DEFAULT_NORETURN (tcomplain ());
1275 /* True if TARGET_OBJECT_LIBRARIES_SVR4 may be read with a
1277 virtual bool augmented_libraries_svr4_read ()
1278 TARGET_DEFAULT_RETURN (false);
1280 /* Those unwinders are tried before any other arch unwinders. If
1281 SELF doesn't have unwinders, it should delegate to the
1282 "beneath" target. */
1283 virtual const struct frame_unwind
*get_unwinder ()
1284 TARGET_DEFAULT_RETURN (NULL
);
1286 virtual const struct frame_unwind
*get_tailcall_unwinder ()
1287 TARGET_DEFAULT_RETURN (NULL
);
1289 /* Prepare to generate a core file. */
1290 virtual void prepare_to_generate_core ()
1291 TARGET_DEFAULT_IGNORE ();
1293 /* Cleanup after generating a core file. */
1294 virtual void done_generating_core ()
1295 TARGET_DEFAULT_IGNORE ();
1297 /* Returns true if the target supports memory tagging, false otherwise. */
1298 virtual bool supports_memory_tagging ()
1299 TARGET_DEFAULT_RETURN (false);
1301 /* Return the allocated memory tags of type TYPE associated with
1302 [ADDRESS, ADDRESS + LEN) in TAGS.
1304 LEN is the number of bytes in the memory range. TAGS is a vector of
1305 bytes containing the tags found in the above memory range.
1307 It is up to the architecture/target to interpret the bytes in the TAGS
1308 vector and read the tags appropriately.
1310 Returns true if fetching the tags succeeded and false otherwise. */
1311 virtual bool fetch_memtags (CORE_ADDR address
, size_t len
,
1312 gdb::byte_vector
&tags
, int type
)
1313 TARGET_DEFAULT_NORETURN (tcomplain ());
1315 /* Write the allocation tags of type TYPE contained in TAGS to the memory
1316 range [ADDRESS, ADDRESS + LEN).
1318 LEN is the number of bytes in the memory range. TAGS is a vector of
1319 bytes containing the tags to be stored to the memory range.
1321 It is up to the architecture/target to interpret the bytes in the TAGS
1322 vector and store them appropriately.
1324 Returns true if storing the tags succeeded and false otherwise. */
1325 virtual bool store_memtags (CORE_ADDR address
, size_t len
,
1326 const gdb::byte_vector
&tags
, int type
)
1327 TARGET_DEFAULT_NORETURN (tcomplain ());
1330 /* Deleter for std::unique_ptr. See comments in
1331 target_ops::~target_ops and target_ops::close about heap-allocated
1333 struct target_ops_deleter
1335 void operator() (target_ops
*target
)
1341 /* A unique pointer for target_ops. */
1342 typedef std::unique_ptr
<target_ops
, target_ops_deleter
> target_ops_up
;
1344 /* A policy class to interface gdb::ref_ptr with target_ops. */
1346 struct target_ops_ref_policy
1348 static void incref (target_ops
*t
)
1353 /* Decrement the reference count on T, and, if the reference count
1354 reaches zero, close the target. */
1355 static void decref (target_ops
*t
);
1358 /* A gdb::ref_ptr pointer to a target_ops. */
1359 typedef gdb::ref_ptr
<target_ops
, target_ops_ref_policy
> target_ops_ref
;
1361 /* Native target backends call this once at initialization time to
1362 inform the core about which is the target that can respond to "run"
1363 or "attach". Note: native targets are always singletons. */
1364 extern void set_native_target (target_ops
*target
);
1366 /* Get the registered native target, if there's one. Otherwise return
1368 extern target_ops
*get_native_target ();
1370 /* Type that manages a target stack. See description of target stacks
1371 and strata at the top of the file. */
1376 target_stack () = default;
1377 DISABLE_COPY_AND_ASSIGN (target_stack
);
1379 /* Push a new target into the stack of the existing target
1380 accessors, possibly superseding some existing accessor. */
1381 void push (target_ops
*t
);
1383 /* Remove a target from the stack, wherever it may be. Return true
1384 if it was removed, false otherwise. */
1385 bool unpush (target_ops
*t
);
1387 /* Returns true if T is pushed on the target stack. */
1388 bool is_pushed (const target_ops
*t
) const
1389 { return at (t
->stratum ()) == t
; }
1391 /* Return the target at STRATUM. */
1392 target_ops
*at (strata stratum
) const { return m_stack
[stratum
].get (); }
1394 /* Return the target at the top of the stack. */
1395 target_ops
*top () const { return at (m_top
); }
1397 /* Find the next target down the stack from the specified target. */
1398 target_ops
*find_beneath (const target_ops
*t
) const;
1401 /* The stratum of the top target. */
1402 enum strata m_top
{};
1404 /* The stack, represented as an array, with one slot per stratum.
1405 If no target is pushed at some stratum, the corresponding slot is
1407 std::array
<target_ops_ref
, (int) debug_stratum
+ 1> m_stack
;
1410 /* Return the dummy target. */
1411 extern target_ops
*get_dummy_target ();
1413 /* Define easy words for doing these operations on our current target. */
1415 extern const char *target_shortname ();
1417 /* Find the correct target to use for "attach". If a target on the
1418 current stack supports attaching, then it is returned. Otherwise,
1419 the default run target is returned. */
1421 extern struct target_ops
*find_attach_target (void);
1423 /* Find the correct target to use for "run". If a target on the
1424 current stack supports creating a new inferior, then it is
1425 returned. Otherwise, the default run target is returned. */
1427 extern struct target_ops
*find_run_target (void);
1429 /* Some targets don't generate traps when attaching to the inferior,
1430 or their target_attach implementation takes care of the waiting.
1431 These targets must set to_attach_no_wait. */
1433 extern bool target_attach_no_wait ();
1435 /* The target_attach operation places a process under debugger control,
1436 and stops the process.
1438 This operation provides a target-specific hook that allows the
1439 necessary bookkeeping to be performed after an attach completes. */
1441 extern void target_post_attach (int pid
);
1443 /* Display a message indicating we're about to attach to a given
1446 extern void target_announce_attach (int from_tty
, int pid
);
1448 /* Display a message indicating we're about to detach from the current
1449 inferior process. */
1451 extern void target_announce_detach (int from_tty
);
1453 /* Takes a program previously attached to and detaches it.
1454 The program may resume execution (some targets do, some don't) and will
1455 no longer stop on signals, etc. We better not have left any breakpoints
1456 in the program or it'll die when it hits one. FROM_TTY says whether to be
1459 extern void target_detach (inferior
*inf
, int from_tty
);
1461 /* Disconnect from the current target without resuming it (leaving it
1462 waiting for a debugger). */
1464 extern void target_disconnect (const char *, int);
1466 /* Resume execution (or prepare for execution) of the current thread
1467 (INFERIOR_PTID), while optionally letting other threads of the
1468 current process or all processes run free.
1470 STEP says whether to hardware single-step the current thread or to
1471 let it run free; SIGNAL is the signal to be given to the current
1472 thread, or GDB_SIGNAL_0 for no signal. The caller may not pass
1475 SCOPE_PTID indicates the resumption scope. I.e., which threads
1476 (other than the current) run free. If resuming a single thread,
1477 SCOPE_PTID is the same thread as the current thread. A wildcard
1478 SCOPE_PTID (all threads, or all threads of process) lets threads
1479 other than the current (for which the wildcard SCOPE_PTID matches)
1480 resume with their 'thread->suspend.stop_signal' signal (usually
1481 GDB_SIGNAL_0) if it is in "pass" state, or with no signal if in "no
1482 pass" state. Note neither STEP nor SIGNAL apply to any thread
1483 other than the current.
1485 In order to efficiently handle batches of resumption requests,
1486 targets may implement this method such that it records the
1487 resumption request, but defers the actual resumption to the
1488 target_commit_resume method implementation. See
1489 target_commit_resume below. */
1490 extern void target_resume (ptid_t scope_ptid
,
1491 int step
, enum gdb_signal signal
);
1493 /* Ensure that all resumed threads are committed to the target.
1495 See the description of process_stratum_target::commit_resumed_state
1496 for more details. */
1497 extern void target_commit_resumed ();
1499 /* For target_read_memory see target/target.h. */
1501 /* The default target_ops::to_wait implementation. */
1503 extern ptid_t
default_target_wait (struct target_ops
*ops
,
1505 struct target_waitstatus
*status
,
1506 target_wait_flags options
);
1508 /* Return true if the target has pending events to report to the core.
1509 See target_ops::has_pending_events(). */
1511 extern bool target_has_pending_events ();
1513 /* Fetch at least register REGNO, or all regs if regno == -1. No result. */
1515 extern void target_fetch_registers (struct regcache
*regcache
, int regno
);
1517 /* Store at least register REGNO, or all regs if REGNO == -1.
1518 It can store as many registers as it wants to, so target_prepare_to_store
1519 must have been previously called. Calls error() if there are problems. */
1521 extern void target_store_registers (struct regcache
*regcache
, int regs
);
1523 /* Get ready to modify the registers array. On machines which store
1524 individual registers, this doesn't need to do anything. On machines
1525 which store all the registers in one fell swoop, this makes sure
1526 that REGISTERS contains all the registers from the program being
1529 extern void target_prepare_to_store (regcache
*regcache
);
1531 /* Determine current address space of thread PTID. */
1533 struct address_space
*target_thread_address_space (ptid_t
);
1535 /* Implement the "info proc" command. This returns one if the request
1536 was handled, and zero otherwise. It can also throw an exception if
1537 an error was encountered while attempting to handle the
1540 int target_info_proc (const char *, enum info_proc_what
);
1542 /* Returns true if this target can disable address space randomization. */
1544 int target_supports_disable_randomization (void);
1546 /* Returns true if this target can enable and disable tracepoints
1547 while a trace experiment is running. */
1549 extern bool target_supports_enable_disable_tracepoint ();
1551 extern bool target_supports_string_tracing ();
1553 /* Returns true if this target can handle breakpoint conditions
1556 extern bool target_supports_evaluation_of_breakpoint_conditions ();
1558 /* Does this target support dumpcore API? */
1560 extern bool target_supports_dumpcore ();
1562 /* Generate the core file with target API. */
1564 extern void target_dumpcore (const char *filename
);
1566 /* Returns true if this target can handle breakpoint commands
1569 extern bool target_can_run_breakpoint_commands ();
1571 /* For target_read_memory see target/target.h. */
1573 extern int target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
1576 extern int target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
);
1578 extern int target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
);
1580 /* For target_write_memory see target/target.h. */
1582 extern int target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
,
1585 /* Fetches the target's memory map. If one is found it is sorted
1586 and returned, after some consistency checking. Otherwise, NULL
1588 std::vector
<mem_region
> target_memory_map (void);
1590 /* Erases all flash memory regions on the target. */
1591 void flash_erase_command (const char *cmd
, int from_tty
);
1593 /* Erase the specified flash region. */
1594 void target_flash_erase (ULONGEST address
, LONGEST length
);
1596 /* Finish a sequence of flash operations. */
1597 void target_flash_done (void);
1599 /* Describes a request for a memory write operation. */
1600 struct memory_write_request
1602 memory_write_request (ULONGEST begin_
, ULONGEST end_
,
1603 gdb_byte
*data_
= nullptr, void *baton_
= nullptr)
1604 : begin (begin_
), end (end_
), data (data_
), baton (baton_
)
1607 /* Begining address that must be written. */
1609 /* Past-the-end address. */
1611 /* The data to write. */
1613 /* A callback baton for progress reporting for this request. */
1617 /* Enumeration specifying different flash preservation behaviour. */
1618 enum flash_preserve_mode
1624 /* Write several memory blocks at once. This version can be more
1625 efficient than making several calls to target_write_memory, in
1626 particular because it can optimize accesses to flash memory.
1628 Moreover, this is currently the only memory access function in gdb
1629 that supports writing to flash memory, and it should be used for
1630 all cases where access to flash memory is desirable.
1632 REQUESTS is the vector of memory_write_request.
1633 PRESERVE_FLASH_P indicates what to do with blocks which must be
1634 erased, but not completely rewritten.
1635 PROGRESS_CB is a function that will be periodically called to provide
1636 feedback to user. It will be called with the baton corresponding
1637 to the request currently being written. It may also be called
1638 with a NULL baton, when preserved flash sectors are being rewritten.
1640 The function returns 0 on success, and error otherwise. */
1641 int target_write_memory_blocks
1642 (const std::vector
<memory_write_request
> &requests
,
1643 enum flash_preserve_mode preserve_flash_p
,
1644 void (*progress_cb
) (ULONGEST
, void *));
1646 /* Print a line about the current target. */
1648 extern void target_files_info ();
1650 /* Insert a breakpoint at address BP_TGT->placed_address in
1651 the target machine. Returns 0 for success, and returns non-zero or
1652 throws an error (with a detailed failure reason error code and
1653 message) otherwise. */
1655 extern int target_insert_breakpoint (struct gdbarch
*gdbarch
,
1656 struct bp_target_info
*bp_tgt
);
1658 /* Remove a breakpoint at address BP_TGT->placed_address in the target
1659 machine. Result is 0 for success, non-zero for error. */
1661 extern int target_remove_breakpoint (struct gdbarch
*gdbarch
,
1662 struct bp_target_info
*bp_tgt
,
1663 enum remove_bp_reason reason
);
1665 /* Return true if the target stack has a non-default
1666 "terminal_ours" method. */
1668 extern bool target_supports_terminal_ours (void);
1670 /* Kill the inferior process. Make it go away. */
1672 extern void target_kill (void);
1674 /* Load an executable file into the target process. This is expected
1675 to not only bring new code into the target process, but also to
1676 update GDB's symbol tables to match.
1678 ARG contains command-line arguments, to be broken down with
1679 buildargv (). The first non-switch argument is the filename to
1680 load, FILE; the second is a number (as parsed by strtoul (..., ...,
1681 0)), which is an offset to apply to the load addresses of FILE's
1682 sections. The target may define switches, or other non-switch
1683 arguments, as it pleases. */
1685 extern void target_load (const char *arg
, int from_tty
);
1687 /* On some targets, we can catch an inferior fork or vfork event when
1688 it occurs. These functions insert/remove an already-created
1689 catchpoint for such events. They return 0 for success, 1 if the
1690 catchpoint type is not supported and -1 for failure. */
1692 extern int target_insert_fork_catchpoint (int pid
);
1694 extern int target_remove_fork_catchpoint (int pid
);
1696 extern int target_insert_vfork_catchpoint (int pid
);
1698 extern int target_remove_vfork_catchpoint (int pid
);
1700 /* Call the follow_fork method on the current target stack.
1702 This function is called when the inferior forks or vforks, to perform any
1703 bookkeeping and fiddling necessary to continue debugging either the parent,
1704 the child or both. */
1706 void target_follow_fork (inferior
*inf
, ptid_t child_ptid
,
1707 target_waitkind fork_kind
, bool follow_child
,
1710 /* Handle the target-specific bookkeeping required when the inferior makes an
1713 The current inferior at the time of the call is the inferior that did the
1714 exec. FOLLOW_INF is the inferior in which execution continues post-exec.
1715 If "follow-exec-mode" is "same", FOLLOW_INF is the same as the current
1716 inferior, meaning that execution continues with the same inferior. If
1717 "follow-exec-mode" is "new", FOLLOW_INF is a different inferior, meaning
1718 that execution continues in a new inferior.
1720 On exit, the target must leave FOLLOW_INF as the current inferior. */
1722 void target_follow_exec (inferior
*follow_inf
, ptid_t ptid
,
1723 const char *execd_pathname
);
1725 /* On some targets, we can catch an inferior exec event when it
1726 occurs. These functions insert/remove an already-created
1727 catchpoint for such events. They return 0 for success, 1 if the
1728 catchpoint type is not supported and -1 for failure. */
1730 extern int target_insert_exec_catchpoint (int pid
);
1732 extern int target_remove_exec_catchpoint (int pid
);
1736 NEEDED is true if any syscall catch (of any kind) is requested.
1737 If NEEDED is false, it means the target can disable the mechanism to
1738 catch system calls because there are no more catchpoints of this type.
1740 ANY_COUNT is nonzero if a generic (filter-less) syscall catch is
1741 being requested. In this case, SYSCALL_COUNTS should be ignored.
1743 SYSCALL_COUNTS is an array of ints, indexed by syscall number. An
1744 element in this array is nonzero if that syscall should be caught.
1745 This argument only matters if ANY_COUNT is zero.
1747 Return 0 for success, 1 if syscall catchpoints are not supported or -1
1750 extern int target_set_syscall_catchpoint
1751 (int pid
, bool needed
, int any_count
,
1752 gdb::array_view
<const int> syscall_counts
);
1754 /* The debugger has completed a blocking wait() call. There is now
1755 some process event that must be processed. This function should
1756 be defined by those targets that require the debugger to perform
1757 cleanup or internal state changes in response to the process event. */
1759 /* For target_mourn_inferior see target/target.h. */
1761 /* Does target have enough data to do a run or attach command? */
1763 extern int target_can_run ();
1765 /* Set list of signals to be handled in the target.
1767 PASS_SIGNALS is an array indexed by target signal number
1768 (enum gdb_signal). For every signal whose entry in this array is
1769 non-zero, the target is allowed -but not required- to skip reporting
1770 arrival of the signal to the GDB core by returning from target_wait,
1771 and to pass the signal directly to the inferior instead.
1773 However, if the target is hardware single-stepping a thread that is
1774 about to receive a signal, it needs to be reported in any case, even
1775 if mentioned in a previous target_pass_signals call. */
1777 extern void target_pass_signals
1778 (gdb::array_view
<const unsigned char> pass_signals
);
1780 /* Set list of signals the target may pass to the inferior. This
1781 directly maps to the "handle SIGNAL pass/nopass" setting.
1783 PROGRAM_SIGNALS is an array indexed by target signal
1784 number (enum gdb_signal). For every signal whose entry in this
1785 array is non-zero, the target is allowed to pass the signal to the
1786 inferior. Signals not present in the array shall be silently
1787 discarded. This does not influence whether to pass signals to the
1788 inferior as a result of a target_resume call. This is useful in
1789 scenarios where the target needs to decide whether to pass or not a
1790 signal to the inferior without GDB core involvement, such as for
1791 example, when detaching (as threads may have been suspended with
1792 pending signals not reported to GDB). */
1794 extern void target_program_signals
1795 (gdb::array_view
<const unsigned char> program_signals
);
1797 /* Check to see if a thread is still alive. */
1799 extern int target_thread_alive (ptid_t ptid
);
1801 /* Sync the target's threads with GDB's thread list. */
1803 extern void target_update_thread_list (void);
1805 /* Make target stop in a continuable fashion. (For instance, under
1806 Unix, this should act like SIGSTOP). Note that this function is
1807 asynchronous: it does not wait for the target to become stopped
1808 before returning. If this is the behavior you want please use
1809 target_stop_and_wait. */
1811 extern void target_stop (ptid_t ptid
);
1813 /* Interrupt the target. Unlike target_stop, this does not specify
1814 which thread/process reports the stop. For most target this acts
1815 like raising a SIGINT, though that's not absolutely required. This
1816 function is asynchronous. */
1818 extern void target_interrupt ();
1820 /* Pass a ^C, as determined to have been pressed by checking the quit
1821 flag, to the target, as if the user had typed the ^C on the
1822 inferior's controlling terminal while the inferior was in the
1823 foreground. Remote targets may take the opportunity to detect the
1824 remote side is not responding and offer to disconnect. */
1826 extern void target_pass_ctrlc (void);
1828 /* The default target_ops::to_pass_ctrlc implementation. Simply calls
1829 target_interrupt. */
1830 extern void default_target_pass_ctrlc (struct target_ops
*ops
);
1832 /* Send the specified COMMAND to the target's monitor
1833 (shell,interpreter) for execution. The result of the query is
1834 placed in OUTBUF. */
1836 extern void target_rcmd (const char *command
, struct ui_file
*outbuf
);
1838 /* Does the target include memory? (Dummy targets don't.) */
1840 extern int target_has_memory ();
1842 /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until
1843 we start a process.) */
1845 extern int target_has_stack ();
1847 /* Does the target have registers? (Exec files don't.) */
1849 extern int target_has_registers ();
1851 /* Does the target have execution? Can we make it jump (through
1852 hoops), or pop its stack a few times? This means that the current
1853 target is currently executing; for some targets, that's the same as
1854 whether or not the target is capable of execution, but there are
1855 also targets which can be current while not executing. In that
1856 case this will become true after to_create_inferior or
1857 to_attach. INF is the inferior to use; nullptr means to use the
1858 current inferior. */
1860 extern bool target_has_execution (inferior
*inf
= nullptr);
1862 /* Can the target support the debugger control of thread execution?
1863 Can it lock the thread scheduler? */
1865 extern bool target_can_lock_scheduler ();
1867 /* Controls whether async mode is permitted. */
1868 extern bool target_async_permitted
;
1870 /* Can the target support asynchronous execution? */
1871 extern bool target_can_async_p ();
1873 /* An overload of the above that can be called when the target is not yet
1874 pushed, this calls TARGET::can_async_p directly. */
1875 extern bool target_can_async_p (struct target_ops
*target
);
1877 /* Is the target in asynchronous execution mode? */
1878 extern bool target_is_async_p ();
1880 /* Enables/disabled async target events. */
1881 extern void target_async (bool enable
);
1883 /* Enables/disables thread create and exit events. */
1884 extern void target_thread_events (int enable
);
1886 /* Whether support for controlling the target backends always in
1887 non-stop mode is enabled. */
1888 extern enum auto_boolean target_non_stop_enabled
;
1890 /* Is the target in non-stop mode? Some targets control the inferior
1891 in non-stop mode even with "set non-stop off". Always true if "set
1893 extern bool target_is_non_stop_p ();
1895 /* Return true if at least one inferior has a non-stop target. */
1896 extern bool exists_non_stop_target ();
1898 extern exec_direction_kind
target_execution_direction ();
1900 /* Converts a process id to a string. Usually, the string just contains
1901 `process xyz', but on some systems it may contain
1902 `process xyz thread abc'. */
1904 extern std::string
target_pid_to_str (ptid_t ptid
);
1906 extern std::string
normal_pid_to_str (ptid_t ptid
);
1908 /* Return a short string describing extra information about PID,
1909 e.g. "sleeping", "runnable", "running on LWP 3". Null return value
1912 extern const char *target_extra_thread_info (thread_info
*tp
);
1914 /* Return the thread's name, or NULL if the target is unable to determine it.
1915 The returned value must not be freed by the caller.
1917 You likely don't want to call this function, but use the thread_name
1918 function instead, which prefers the user-given thread name, if set. */
1920 extern const char *target_thread_name (struct thread_info
*);
1922 /* Given a pointer to a thread library specific thread handle and
1923 its length, return a pointer to the corresponding thread_info struct. */
1925 extern struct thread_info
*target_thread_handle_to_thread_info
1926 (const gdb_byte
*thread_handle
, int handle_len
, struct inferior
*inf
);
1928 /* Given a thread, return the thread handle, a target-specific sequence of
1929 bytes which serves as a thread identifier within the program being
1931 extern gdb::array_view
<const gdb_byte
> target_thread_info_to_thread_handle
1932 (struct thread_info
*);
1934 /* Attempts to find the pathname of the executable file
1935 that was run to create a specified process.
1937 The process PID must be stopped when this operation is used.
1939 If the executable file cannot be determined, NULL is returned.
1941 Else, a pointer to a character string containing the pathname
1942 is returned. This string should be copied into a buffer by
1943 the client if the string will not be immediately used, or if
1946 extern const char *target_pid_to_exec_file (int pid
);
1948 /* See the to_thread_architecture description in struct target_ops. */
1950 extern gdbarch
*target_thread_architecture (ptid_t ptid
);
1953 * Iterator function for target memory regions.
1954 * Calls a callback function once for each memory region 'mapped'
1955 * in the child process. Defined as a simple macro rather than
1956 * as a function macro so that it can be tested for nullity.
1959 extern int target_find_memory_regions (find_memory_region_ftype func
,
1963 * Compose corefile .note section.
1966 extern gdb::unique_xmalloc_ptr
<char> target_make_corefile_notes (bfd
*bfd
,
1969 /* Bookmark interfaces. */
1970 extern gdb_byte
*target_get_bookmark (const char *args
, int from_tty
);
1972 extern void target_goto_bookmark (const gdb_byte
*arg
, int from_tty
);
1974 /* Hardware watchpoint interfaces. */
1976 /* GDB's current model is that there are three "kinds" of watchpoints,
1977 with respect to when they trigger and how you can move past them.
1979 Those are: continuable, steppable, and non-steppable.
1981 Continuable watchpoints are like x86's -- those trigger after the
1982 memory access's side effects are fully committed to memory. I.e.,
1983 they trap with the PC pointing at the next instruction already.
1984 Continuing past such a watchpoint is doable by just normally
1985 continuing, hence the name.
1987 Both steppable and non-steppable watchpoints trap before the memory
1988 access. I.e, the PC points at the instruction that is accessing
1989 the memory. So GDB needs to single-step once past the current
1990 instruction in order to make the access effective and check whether
1991 the instruction's side effects change the watched expression.
1993 Now, in order to step past that instruction, depending on
1994 architecture and target, you can have two situations:
1996 - steppable watchpoints: you can single-step with the watchpoint
1997 still armed, and the watchpoint won't trigger again.
1999 - non-steppable watchpoints: if you try to single-step with the
2000 watchpoint still armed, you'd trap the watchpoint again and the
2001 thread wouldn't make any progress. So GDB needs to temporarily
2002 remove the watchpoint in order to step past it.
2004 If your target/architecture does not signal that it has either
2005 steppable or non-steppable watchpoints via either
2006 target_have_steppable_watchpoint or
2007 gdbarch_have_nonsteppable_watchpoint, GDB assumes continuable
2010 /* Returns true if we were stopped by a hardware watchpoint (memory read or
2011 write). Only the INFERIOR_PTID task is being queried. */
2013 extern bool target_stopped_by_watchpoint ();
2015 /* Returns true if the target stopped because it executed a
2016 software breakpoint instruction. */
2018 extern bool target_stopped_by_sw_breakpoint ();
2020 extern bool target_supports_stopped_by_sw_breakpoint ();
2022 extern bool target_stopped_by_hw_breakpoint ();
2024 extern bool target_supports_stopped_by_hw_breakpoint ();
2026 /* True if we have steppable watchpoints */
2028 extern bool target_have_steppable_watchpoint ();
2030 /* Provide defaults for hardware watchpoint functions. */
2032 /* If the *_hw_breakpoint functions have not been defined
2033 elsewhere use the definitions in the target vector. */
2035 /* Returns positive if we can set a hardware watchpoint of type TYPE.
2036 Returns negative if the target doesn't have enough hardware debug
2037 registers available. Return zero if hardware watchpoint of type
2038 TYPE isn't supported. TYPE is one of bp_hardware_watchpoint,
2039 bp_read_watchpoint, bp_write_watchpoint, or bp_hardware_breakpoint.
2040 CNT is the number of such watchpoints used so far, including this
2041 one. OTHERTYPE is the number of watchpoints of other types than
2042 this one used so far. */
2044 extern int target_can_use_hardware_watchpoint (bptype type
, int cnt
,
2047 /* Returns the number of debug registers needed to watch the given
2048 memory region, or zero if not supported. */
2050 extern int target_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
);
2052 extern int target_can_do_single_step ();
2054 /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes.
2055 TYPE is 0 for write, 1 for read, and 2 for read/write accesses.
2056 COND is the expression for its condition, or NULL if there's none.
2057 Returns 0 for success, 1 if the watchpoint type is not supported,
2060 extern int target_insert_watchpoint (CORE_ADDR addr
, int len
,
2061 target_hw_bp_type type
, expression
*cond
);
2063 extern int target_remove_watchpoint (CORE_ADDR addr
, int len
,
2064 target_hw_bp_type type
, expression
*cond
);
2066 /* Insert a new masked watchpoint at ADDR using the mask MASK.
2067 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
2068 or hw_access for an access watchpoint. Returns 0 for success, 1 if
2069 masked watchpoints are not supported, -1 for failure. */
2071 extern int target_insert_mask_watchpoint (CORE_ADDR
, CORE_ADDR
,
2072 enum target_hw_bp_type
);
2074 /* Remove a masked watchpoint at ADDR with the mask MASK.
2075 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
2076 or hw_access for an access watchpoint. Returns 0 for success, non-zero
2079 extern int target_remove_mask_watchpoint (CORE_ADDR
, CORE_ADDR
,
2080 enum target_hw_bp_type
);
2082 /* Insert a hardware breakpoint at address BP_TGT->placed_address in
2083 the target machine. Returns 0 for success, and returns non-zero or
2084 throws an error (with a detailed failure reason error code and
2085 message) otherwise. */
2087 extern int target_insert_hw_breakpoint (gdbarch
*gdbarch
,
2088 bp_target_info
*bp_tgt
);
2090 extern int target_remove_hw_breakpoint (gdbarch
*gdbarch
,
2091 bp_target_info
*bp_tgt
);
2093 /* Return number of debug registers needed for a ranged breakpoint,
2094 or -1 if ranged breakpoints are not supported. */
2096 extern int target_ranged_break_num_registers (void);
2098 /* Return non-zero if target knows the data address which triggered this
2099 target_stopped_by_watchpoint, in such case place it to *ADDR_P. Only the
2100 INFERIOR_PTID task is being queried. */
2101 #define target_stopped_data_address(target, addr_p) \
2102 (target)->stopped_data_address (addr_p)
2104 /* Return non-zero if ADDR is within the range of a watchpoint spanning
2105 LENGTH bytes beginning at START. */
2106 #define target_watchpoint_addr_within_range(target, addr, start, length) \
2107 (target)->watchpoint_addr_within_range (addr, start, length)
2109 /* Return non-zero if the target is capable of using hardware to evaluate
2110 the condition expression. In this case, if the condition is false when
2111 the watched memory location changes, execution may continue without the
2112 debugger being notified.
2114 Due to limitations in the hardware implementation, it may be capable of
2115 avoiding triggering the watchpoint in some cases where the condition
2116 expression is false, but may report some false positives as well.
2117 For this reason, GDB will still evaluate the condition expression when
2118 the watchpoint triggers. */
2120 extern bool target_can_accel_watchpoint_condition (CORE_ADDR addr
, int len
,
2121 int type
, expression
*cond
);
2123 /* Return number of debug registers needed for a masked watchpoint,
2124 -1 if masked watchpoints are not supported or -2 if the given address
2125 and mask combination cannot be used. */
2127 extern int target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
);
2129 /* Target can execute in reverse? */
2131 extern bool target_can_execute_reverse ();
2133 extern const struct target_desc
*target_read_description (struct target_ops
*);
2135 extern ptid_t
target_get_ada_task_ptid (long lwp
, ULONGEST tid
);
2137 /* Main entry point for searching memory. */
2138 extern int target_search_memory (CORE_ADDR start_addr
,
2139 ULONGEST search_space_len
,
2140 const gdb_byte
*pattern
,
2141 ULONGEST pattern_len
,
2142 CORE_ADDR
*found_addrp
);
2144 /* Target file operations. */
2146 /* Return true if the filesystem seen by the current inferior
2147 is the local filesystem, zero otherwise. */
2149 extern bool target_filesystem_is_local ();
2151 /* Open FILENAME on the target, in the filesystem as seen by INF,
2152 using FLAGS and MODE. If INF is NULL, use the filesystem seen by
2153 the debugger (GDB or, for remote targets, the remote stub). Return
2154 a target file descriptor, or -1 if an error occurs (and set
2155 *TARGET_ERRNO). If WARN_IF_SLOW is true, print a warning message
2156 if the file is being accessed over a link that may be slow. */
2157 extern int target_fileio_open (struct inferior
*inf
,
2158 const char *filename
, int flags
,
2159 int mode
, bool warn_if_slow
,
2160 fileio_error
*target_errno
);
2162 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
2163 Return the number of bytes written, or -1 if an error occurs
2164 (and set *TARGET_ERRNO). */
2165 extern int target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
2166 ULONGEST offset
, fileio_error
*target_errno
);
2168 /* Read up to LEN bytes FD on the target into READ_BUF.
2169 Return the number of bytes read, or -1 if an error occurs
2170 (and set *TARGET_ERRNO). */
2171 extern int target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
2172 ULONGEST offset
, fileio_error
*target_errno
);
2174 /* Get information about the file opened as FD on the target
2175 and put it in SB. Return 0 on success, or -1 if an error
2176 occurs (and set *TARGET_ERRNO). */
2177 extern int target_fileio_fstat (int fd
, struct stat
*sb
,
2178 fileio_error
*target_errno
);
2180 /* Close FD on the target. Return 0, or -1 if an error occurs
2181 (and set *TARGET_ERRNO). */
2182 extern int target_fileio_close (int fd
, fileio_error
*target_errno
);
2184 /* Unlink FILENAME on the target, in the filesystem as seen by INF.
2185 If INF is NULL, use the filesystem seen by the debugger (GDB or,
2186 for remote targets, the remote stub). Return 0, or -1 if an error
2187 occurs (and set *TARGET_ERRNO). */
2188 extern int target_fileio_unlink (struct inferior
*inf
,
2189 const char *filename
,
2190 fileio_error
*target_errno
);
2192 /* Read value of symbolic link FILENAME on the target, in the
2193 filesystem as seen by INF. If INF is NULL, use the filesystem seen
2194 by the debugger (GDB or, for remote targets, the remote stub).
2195 Return a null-terminated string allocated via xmalloc, or NULL if
2196 an error occurs (and set *TARGET_ERRNO). */
2197 extern gdb::optional
<std::string
> target_fileio_readlink
2198 (struct inferior
*inf
, const char *filename
, fileio_error
*target_errno
);
2200 /* Read target file FILENAME, in the filesystem as seen by INF. If
2201 INF is NULL, use the filesystem seen by the debugger (GDB or, for
2202 remote targets, the remote stub). The return value will be -1 if
2203 the transfer fails or is not supported; 0 if the object is empty;
2204 or the length of the object otherwise. If a positive value is
2205 returned, a sufficiently large buffer will be allocated using
2206 xmalloc and returned in *BUF_P containing the contents of the
2209 This method should be used for objects sufficiently small to store
2210 in a single xmalloc'd buffer, when no fixed bound on the object's
2211 size is known in advance. */
2212 extern LONGEST
target_fileio_read_alloc (struct inferior
*inf
,
2213 const char *filename
,
2216 /* Read target file FILENAME, in the filesystem as seen by INF. If
2217 INF is NULL, use the filesystem seen by the debugger (GDB or, for
2218 remote targets, the remote stub). The result is NUL-terminated and
2219 returned as a string, allocated using xmalloc. If an error occurs
2220 or the transfer is unsupported, NULL is returned. Empty objects
2221 are returned as allocated but empty strings. A warning is issued
2222 if the result contains any embedded NUL bytes. */
2223 extern gdb::unique_xmalloc_ptr
<char> target_fileio_read_stralloc
2224 (struct inferior
*inf
, const char *filename
);
2226 /* Invalidate the target associated with open handles that were open
2227 on target TARG, since we're about to close (and maybe destroy) the
2228 target. The handles remain open from the client's perspective, but
2229 trying to do anything with them other than closing them will fail
2231 extern void fileio_handles_invalidate_target (target_ops
*targ
);
2233 /* Tracepoint-related operations. */
2235 extern void target_trace_init ();
2237 extern void target_download_tracepoint (bp_location
*location
);
2239 extern bool target_can_download_tracepoint ();
2241 extern void target_download_trace_state_variable (const trace_state_variable
&tsv
);
2243 extern void target_enable_tracepoint (bp_location
*loc
);
2245 extern void target_disable_tracepoint (bp_location
*loc
);
2247 extern void target_trace_start ();
2249 extern void target_trace_set_readonly_regions ();
2251 extern int target_get_trace_status (trace_status
*ts
);
2253 extern void target_get_tracepoint_status (breakpoint
*tp
, uploaded_tp
*utp
);
2255 extern void target_trace_stop ();
2257 extern int target_trace_find (trace_find_type type
, int num
, CORE_ADDR addr1
,
2258 CORE_ADDR addr2
, int *tpp
);
2260 extern bool target_get_trace_state_variable_value (int tsv
, LONGEST
*val
);
2262 extern int target_save_trace_data (const char *filename
);
2264 extern int target_upload_tracepoints (uploaded_tp
**utpp
);
2266 extern int target_upload_trace_state_variables (uploaded_tsv
**utsvp
);
2268 extern LONGEST
target_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
,
2271 extern int target_get_min_fast_tracepoint_insn_len ();
2273 extern void target_set_disconnected_tracing (int val
);
2275 extern void target_set_circular_trace_buffer (int val
);
2277 extern void target_set_trace_buffer_size (LONGEST val
);
2279 extern bool target_set_trace_notes (const char *user
, const char *notes
,
2280 const char *stopnotes
);
2282 extern bool target_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
);
2284 extern void target_set_permissions ();
2286 extern bool target_static_tracepoint_marker_at
2287 (CORE_ADDR addr
, static_tracepoint_marker
*marker
);
2289 extern std::vector
<static_tracepoint_marker
>
2290 target_static_tracepoint_markers_by_strid (const char *marker_id
);
2292 extern traceframe_info_up
target_traceframe_info ();
2294 extern bool target_use_agent (bool use
);
2296 extern bool target_can_use_agent ();
2298 extern bool target_augmented_libraries_svr4_read ();
2300 extern bool target_supports_memory_tagging ();
2302 extern bool target_fetch_memtags (CORE_ADDR address
, size_t len
,
2303 gdb::byte_vector
&tags
, int type
);
2305 extern bool target_store_memtags (CORE_ADDR address
, size_t len
,
2306 const gdb::byte_vector
&tags
, int type
);
2308 /* Command logging facility. */
2310 extern void target_log_command (const char *p
);
2312 extern int target_core_of_thread (ptid_t ptid
);
2314 /* See to_get_unwinder in struct target_ops. */
2315 extern const struct frame_unwind
*target_get_unwinder (void);
2317 /* See to_get_tailcall_unwinder in struct target_ops. */
2318 extern const struct frame_unwind
*target_get_tailcall_unwinder (void);
2320 /* This implements basic memory verification, reading target memory
2321 and performing the comparison here (as opposed to accelerated
2322 verification making use of the qCRC packet, for example). */
2324 extern int simple_verify_memory (struct target_ops
* ops
,
2325 const gdb_byte
*data
,
2326 CORE_ADDR memaddr
, ULONGEST size
);
2328 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range matches
2329 the contents of [DATA,DATA+SIZE). Returns 1 if there's a match, 0
2330 if there's a mismatch, and -1 if an error is encountered while
2331 reading memory. Throws an error if the functionality is found not
2332 to be supported by the current target. */
2333 int target_verify_memory (const gdb_byte
*data
,
2334 CORE_ADDR memaddr
, ULONGEST size
);
2336 /* Routines for maintenance of the target structures...
2338 add_target: Add a target to the list of all possible targets.
2339 This only makes sense for targets that should be activated using
2340 the "target TARGET_NAME ..." command.
2342 push_target: Make this target the top of the stack of currently used
2343 targets, within its particular stratum of the stack. Result
2344 is 0 if now atop the stack, nonzero if not on top (maybe
2347 unpush_target: Remove this from the stack of currently used targets,
2348 no matter where it is on the list. Returns 0 if no
2349 change, 1 if removed from stack. */
2351 /* Type of callback called when the user activates a target with
2352 "target TARGET_NAME". The callback routine takes the rest of the
2353 parameters from the command, and (if successful) pushes a new
2354 target onto the stack. */
2355 typedef void target_open_ftype (const char *args
, int from_tty
);
2357 /* Add the target described by INFO to the list of possible targets
2358 and add a new command 'target $(INFO->shortname)'. Set COMPLETER
2359 as the command's completer if not NULL. */
2361 extern void add_target (const target_info
&info
,
2362 target_open_ftype
*func
,
2363 completer_ftype
*completer
= NULL
);
2365 /* Adds a command ALIAS for the target described by INFO and marks it
2366 deprecated. This is useful for maintaining backwards compatibility
2367 when renaming targets. */
2369 extern void add_deprecated_target_alias (const target_info
&info
,
2372 /* A unique_ptr helper to unpush a target. */
2374 struct target_unpusher
2376 void operator() (struct target_ops
*ops
) const;
2379 /* A unique_ptr that unpushes a target on destruction. */
2381 typedef std::unique_ptr
<struct target_ops
, target_unpusher
> target_unpush_up
;
2383 extern void target_pre_inferior (int);
2385 extern void target_preopen (int);
2387 extern CORE_ADDR
target_translate_tls_address (struct objfile
*objfile
,
2390 /* Return the "section" containing the specified address. */
2391 const struct target_section
*target_section_by_addr (struct target_ops
*target
,
2394 /* Return the target section table this target (or the targets
2395 beneath) currently manipulate. */
2397 extern const target_section_table
*target_get_section_table
2398 (struct target_ops
*target
);
2400 /* Default implementation of get_section_table for dummy_target. */
2402 extern const target_section_table
*default_get_section_table ();
2404 /* From mem-break.c */
2406 extern int memory_remove_breakpoint (struct target_ops
*,
2407 struct gdbarch
*, struct bp_target_info
*,
2408 enum remove_bp_reason
);
2410 extern int memory_insert_breakpoint (struct target_ops
*,
2411 struct gdbarch
*, struct bp_target_info
*);
2413 /* Convenience template use to add memory breakpoints support to a
2416 template <typename BaseTarget
>
2417 struct memory_breakpoint_target
: public BaseTarget
2419 int insert_breakpoint (struct gdbarch
*gdbarch
,
2420 struct bp_target_info
*bp_tgt
) override
2421 { return memory_insert_breakpoint (this, gdbarch
, bp_tgt
); }
2423 int remove_breakpoint (struct gdbarch
*gdbarch
,
2424 struct bp_target_info
*bp_tgt
,
2425 enum remove_bp_reason reason
) override
2426 { return memory_remove_breakpoint (this, gdbarch
, bp_tgt
, reason
); }
2429 /* Check whether the memory at the breakpoint's placed address still
2430 contains the expected breakpoint instruction. */
2432 extern int memory_validate_breakpoint (struct gdbarch
*gdbarch
,
2433 struct bp_target_info
*bp_tgt
);
2435 extern int default_memory_remove_breakpoint (struct gdbarch
*,
2436 struct bp_target_info
*);
2438 extern int default_memory_insert_breakpoint (struct gdbarch
*,
2439 struct bp_target_info
*);
2444 extern void initialize_targets (void);
2446 extern void noprocess (void) ATTRIBUTE_NORETURN
;
2448 extern void target_require_runnable (void);
2450 /* Find the target at STRATUM. If no target is at that stratum,
2453 struct target_ops
*find_target_at (enum strata stratum
);
2455 /* Read OS data object of type TYPE from the target, and return it in XML
2456 format. The return value follows the same rules as target_read_stralloc. */
2458 extern gdb::optional
<gdb::char_vector
> target_get_osdata (const char *type
);
2460 /* Stuff that should be shared among the various remote targets. */
2463 /* Timeout limit for response from target. */
2464 extern int remote_timeout
;
2468 /* Set the show memory breakpoints mode to show, and return a
2469 scoped_restore to restore it back to the current value. */
2470 extern scoped_restore_tmpl
<int>
2471 make_scoped_restore_show_memory_breakpoints (int show
);
2473 extern bool may_write_registers
;
2474 extern bool may_write_memory
;
2475 extern bool may_insert_breakpoints
;
2476 extern bool may_insert_tracepoints
;
2477 extern bool may_insert_fast_tracepoints
;
2478 extern bool may_stop
;
2480 extern void update_target_permissions (void);
2483 /* Imported from machine dependent code. */
2485 /* See to_enable_btrace in struct target_ops. */
2486 extern struct btrace_target_info
*
2487 target_enable_btrace (thread_info
*tp
, const struct btrace_config
*);
2489 /* See to_disable_btrace in struct target_ops. */
2490 extern void target_disable_btrace (struct btrace_target_info
*btinfo
);
2492 /* See to_teardown_btrace in struct target_ops. */
2493 extern void target_teardown_btrace (struct btrace_target_info
*btinfo
);
2495 /* See to_read_btrace in struct target_ops. */
2496 extern enum btrace_error
target_read_btrace (struct btrace_data
*,
2497 struct btrace_target_info
*,
2498 enum btrace_read_type
);
2500 /* See to_btrace_conf in struct target_ops. */
2501 extern const struct btrace_config
*
2502 target_btrace_conf (const struct btrace_target_info
*);
2504 /* See to_stop_recording in struct target_ops. */
2505 extern void target_stop_recording (void);
2507 /* See to_save_record in struct target_ops. */
2508 extern void target_save_record (const char *filename
);
2510 /* Query if the target supports deleting the execution log. */
2511 extern int target_supports_delete_record (void);
2513 /* See to_delete_record in struct target_ops. */
2514 extern void target_delete_record (void);
2516 /* See to_record_method. */
2517 extern enum record_method
target_record_method (ptid_t ptid
);
2519 /* See to_record_is_replaying in struct target_ops. */
2520 extern int target_record_is_replaying (ptid_t ptid
);
2522 /* See to_record_will_replay in struct target_ops. */
2523 extern int target_record_will_replay (ptid_t ptid
, int dir
);
2525 /* See to_record_stop_replaying in struct target_ops. */
2526 extern void target_record_stop_replaying (void);
2528 /* See to_goto_record_begin in struct target_ops. */
2529 extern void target_goto_record_begin (void);
2531 /* See to_goto_record_end in struct target_ops. */
2532 extern void target_goto_record_end (void);
2534 /* See to_goto_record in struct target_ops. */
2535 extern void target_goto_record (ULONGEST insn
);
2537 /* See to_insn_history. */
2538 extern void target_insn_history (int size
, gdb_disassembly_flags flags
);
2540 /* See to_insn_history_from. */
2541 extern void target_insn_history_from (ULONGEST from
, int size
,
2542 gdb_disassembly_flags flags
);
2544 /* See to_insn_history_range. */
2545 extern void target_insn_history_range (ULONGEST begin
, ULONGEST end
,
2546 gdb_disassembly_flags flags
);
2548 /* See to_call_history. */
2549 extern void target_call_history (int size
, record_print_flags flags
);
2551 /* See to_call_history_from. */
2552 extern void target_call_history_from (ULONGEST begin
, int size
,
2553 record_print_flags flags
);
2555 /* See to_call_history_range. */
2556 extern void target_call_history_range (ULONGEST begin
, ULONGEST end
,
2557 record_print_flags flags
);
2559 /* See to_prepare_to_generate_core. */
2560 extern void target_prepare_to_generate_core (void);
2562 /* See to_done_generating_core. */
2563 extern void target_done_generating_core (void);
2565 #endif /* !defined (TARGET_H) */