1 /* Interface between GDB and target environments, including files and processes
3 Copyright (C) 1990-2021 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 #include "infrun.h" /* For enum exec_direction_kind. */
43 #include "breakpoint.h" /* For enum bptype. */
44 #include "gdbsupport/scoped_restore.h"
45 #include "gdbsupport/refcounted-object.h"
46 #include "target-section.h"
48 /* This include file defines the interface between the main part
49 of the debugger, and the part which is target-specific, or
50 specific to the communications interface between us and the
53 A TARGET is an interface between the debugger and a particular
54 kind of file or process. Targets can be STACKED in STRATA,
55 so that more than one target can potentially respond to a request.
56 In particular, memory accesses will walk down the stack of targets
57 until they find a target that is interested in handling that particular
58 address. STRATA are artificial boundaries on the stack, within
59 which particular kinds of targets live. Strata exist so that
60 people don't get confused by pushing e.g. a process target and then
61 a file target, and wondering why they can't see the current values
62 of variables any more (the file target is handling them and they
63 never get to the process target). So when you push a file target,
64 it goes into the file stratum, which is always below the process
67 Note that rather than allow an empty stack, we always have the
68 dummy target at the bottom stratum, so we can call the target
69 methods without checking them. */
71 #include "target/target.h"
72 #include "target/resume.h"
73 #include "target/wait.h"
74 #include "target/waitstatus.h"
78 #include "gdbsupport/gdb_signals.h"
83 #include "tracepoint.h"
85 #include "gdbsupport/break-common.h" /* For enum target_hw_bp_type. */
89 dummy_stratum
, /* The lowest of the low */
90 file_stratum
, /* Executable files, etc */
91 process_stratum
, /* Executing processes or core dump files */
92 thread_stratum
, /* Executing threads */
93 record_stratum
, /* Support record debugging */
94 arch_stratum
, /* Architecture overrides */
95 debug_stratum
/* Target debug. Must be last. */
98 enum thread_control_capabilities
100 tc_none
= 0, /* Default: can't control thread execution. */
101 tc_schedlock
= 1, /* Can lock the thread scheduler. */
104 /* The structure below stores information about a system call.
105 It is basically used in the "catch syscall" command, and in
106 every function that gives information about a system call.
108 It's also good to mention that its fields represent everything
109 that we currently know about a syscall in GDB. */
112 /* The syscall number. */
115 /* The syscall name. */
119 /* Return a pretty printed form of TARGET_OPTIONS. */
120 extern std::string
target_options_to_string (target_wait_flags target_options
);
122 /* Possible types of events that the inferior handler will have to
124 enum inferior_event_type
126 /* Process a normal inferior event which will result in target_wait
129 /* We are called to do stuff after the inferior stops. */
133 /* Target objects which can be transfered using target_read,
134 target_write, et cetera. */
138 /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */
140 /* Transfer up-to LEN bytes of memory starting at OFFSET. */
141 TARGET_OBJECT_MEMORY
,
142 /* Memory, avoiding GDB's data cache and trusting the executable.
143 Target implementations of to_xfer_partial never need to handle
144 this object, and most callers should not use it. */
145 TARGET_OBJECT_RAW_MEMORY
,
146 /* Memory known to be part of the target's stack. This is cached even
147 if it is not in a region marked as such, since it is known to be
149 TARGET_OBJECT_STACK_MEMORY
,
150 /* Memory known to be part of the target code. This is cached even
151 if it is not in a region marked as such. */
152 TARGET_OBJECT_CODE_MEMORY
,
153 /* Kernel Unwind Table. See "ia64-tdep.c". */
154 TARGET_OBJECT_UNWIND_TABLE
,
155 /* Transfer auxilliary vector. */
157 /* StackGhost cookie. See "sparc-tdep.c". */
158 TARGET_OBJECT_WCOOKIE
,
159 /* Target memory map in XML format. */
160 TARGET_OBJECT_MEMORY_MAP
,
161 /* Flash memory. This object can be used to write contents to
162 a previously erased flash memory. Using it without erasing
163 flash can have unexpected results. Addresses are physical
164 address on target, and not relative to flash start. */
166 /* Available target-specific features, e.g. registers and coprocessors.
167 See "target-descriptions.c". ANNEX should never be empty. */
168 TARGET_OBJECT_AVAILABLE_FEATURES
,
169 /* Currently loaded libraries, in XML format. */
170 TARGET_OBJECT_LIBRARIES
,
171 /* Currently loaded libraries specific for SVR4 systems, in XML format. */
172 TARGET_OBJECT_LIBRARIES_SVR4
,
173 /* Currently loaded libraries specific to AIX systems, in XML format. */
174 TARGET_OBJECT_LIBRARIES_AIX
,
175 /* Get OS specific data. The ANNEX specifies the type (running
176 processes, etc.). The data being transfered is expected to follow
177 the DTD specified in features/osdata.dtd. */
178 TARGET_OBJECT_OSDATA
,
179 /* Extra signal info. Usually the contents of `siginfo_t' on unix
181 TARGET_OBJECT_SIGNAL_INFO
,
182 /* The list of threads that are being debugged. */
183 TARGET_OBJECT_THREADS
,
184 /* Collected static trace data. */
185 TARGET_OBJECT_STATIC_TRACE_DATA
,
186 /* Traceframe info, in XML format. */
187 TARGET_OBJECT_TRACEFRAME_INFO
,
188 /* Load maps for FDPIC systems. */
190 /* Darwin dynamic linker info data. */
191 TARGET_OBJECT_DARWIN_DYLD_INFO
,
192 /* OpenVMS Unwind Information Block. */
193 TARGET_OBJECT_OPENVMS_UIB
,
194 /* Branch trace data, in XML format. */
195 TARGET_OBJECT_BTRACE
,
196 /* Branch trace configuration, in XML format. */
197 TARGET_OBJECT_BTRACE_CONF
,
198 /* The pathname of the executable file that was run to create
199 a specified process. ANNEX should be a string representation
200 of the process ID of the process in question, in hexadecimal
202 TARGET_OBJECT_EXEC_FILE
,
203 /* FreeBSD virtual memory mappings. */
204 TARGET_OBJECT_FREEBSD_VMMAP
,
205 /* FreeBSD process strings. */
206 TARGET_OBJECT_FREEBSD_PS_STRINGS
,
207 /* Possible future objects: TARGET_OBJECT_FILE, ... */
210 /* Possible values returned by target_xfer_partial, etc. */
212 enum target_xfer_status
214 /* Some bytes are transferred. */
217 /* No further transfer is possible. */
220 /* The piece of the object requested is unavailable. */
221 TARGET_XFER_UNAVAILABLE
= 2,
223 /* Generic I/O error. Note that it's important that this is '-1',
224 as we still have target_xfer-related code returning hardcoded
226 TARGET_XFER_E_IO
= -1,
228 /* Keep list in sync with target_xfer_status_to_string. */
231 /* Return the string form of STATUS. */
234 target_xfer_status_to_string (enum target_xfer_status status
);
236 typedef enum target_xfer_status
237 target_xfer_partial_ftype (struct target_ops
*ops
,
238 enum target_object object
,
241 const gdb_byte
*writebuf
,
244 ULONGEST
*xfered_len
);
246 enum target_xfer_status
247 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
248 const gdb_byte
*writebuf
, ULONGEST memaddr
,
249 LONGEST len
, ULONGEST
*xfered_len
);
251 /* Request that OPS transfer up to LEN addressable units of the target's
252 OBJECT. When reading from a memory object, the size of an addressable unit
253 is architecture dependent and can be found using
254 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is 1
255 byte long. BUF should point to a buffer large enough to hold the read data,
256 taking into account the addressable unit size. The OFFSET, for a seekable
257 object, specifies the starting point. The ANNEX can be used to provide
258 additional data-specific information to the target.
260 Return the number of addressable units actually transferred, or a negative
261 error code (an 'enum target_xfer_error' value) if the transfer is not
262 supported or otherwise fails. Return of a positive value less than
263 LEN indicates that no further transfer is possible. Unlike the raw
264 to_xfer_partial interface, callers of these functions do not need
265 to retry partial transfers. */
267 extern LONGEST
target_read (struct target_ops
*ops
,
268 enum target_object object
,
269 const char *annex
, gdb_byte
*buf
,
270 ULONGEST offset
, LONGEST len
);
272 struct memory_read_result
274 memory_read_result (ULONGEST begin_
, ULONGEST end_
,
275 gdb::unique_xmalloc_ptr
<gdb_byte
> &&data_
)
278 data (std::move (data_
))
282 ~memory_read_result () = default;
284 memory_read_result (memory_read_result
&&other
) = default;
286 DISABLE_COPY_AND_ASSIGN (memory_read_result
);
288 /* First address that was read. */
290 /* Past-the-end address. */
293 gdb::unique_xmalloc_ptr
<gdb_byte
> data
;
296 extern std::vector
<memory_read_result
> read_memory_robust
297 (struct target_ops
*ops
, const ULONGEST offset
, const LONGEST len
);
299 /* Request that OPS transfer up to LEN addressable units from BUF to the
300 target's OBJECT. When writing to a memory object, the addressable unit
301 size is architecture dependent and can be found using
302 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is 1
303 byte long. The OFFSET, for a seekable object, specifies the starting point.
304 The ANNEX can be used to provide additional data-specific information to
307 Return the number of addressable units actually transferred, or a negative
308 error code (an 'enum target_xfer_status' value) if the transfer is not
309 supported or otherwise fails. Return of a positive value less than
310 LEN indicates that no further transfer is possible. Unlike the raw
311 to_xfer_partial interface, callers of these functions do not need to
312 retry partial transfers. */
314 extern LONGEST
target_write (struct target_ops
*ops
,
315 enum target_object object
,
316 const char *annex
, const gdb_byte
*buf
,
317 ULONGEST offset
, LONGEST len
);
319 /* Similar to target_write, except that it also calls PROGRESS with
320 the number of bytes written and the opaque BATON after every
321 successful partial write (and before the first write). This is
322 useful for progress reporting and user interaction while writing
323 data. To abort the transfer, the progress callback can throw an
326 LONGEST
target_write_with_progress (struct target_ops
*ops
,
327 enum target_object object
,
328 const char *annex
, const gdb_byte
*buf
,
329 ULONGEST offset
, LONGEST len
,
330 void (*progress
) (ULONGEST
, void *),
333 /* Wrapper to perform a full read of unknown size. OBJECT/ANNEX will be read
334 using OPS. The return value will be uninstantiated if the transfer fails or
337 This method should be used for objects sufficiently small to store
338 in a single xmalloc'd buffer, when no fixed bound on the object's
339 size is known in advance. Don't try to read TARGET_OBJECT_MEMORY
340 through this function. */
342 extern gdb::optional
<gdb::byte_vector
> target_read_alloc
343 (struct target_ops
*ops
, enum target_object object
, const char *annex
);
345 /* Read OBJECT/ANNEX using OPS. The result is a NUL-terminated character vector
346 (therefore usable as a NUL-terminated string). If an error occurs or the
347 transfer is unsupported, the return value will be uninstantiated. Empty
348 objects are returned as allocated but empty strings. Therefore, on success,
349 the returned vector is guaranteed to have at least one element. A warning is
350 issued if the result contains any embedded NUL bytes. */
352 extern gdb::optional
<gdb::char_vector
> target_read_stralloc
353 (struct target_ops
*ops
, enum target_object object
, const char *annex
);
355 /* See target_ops->to_xfer_partial. */
356 extern target_xfer_partial_ftype target_xfer_partial
;
358 /* Wrappers to target read/write that perform memory transfers. They
359 throw an error if the memory transfer fails.
361 NOTE: cagney/2003-10-23: The naming schema is lifted from
362 "frame.h". The parameter order is lifted from get_frame_memory,
363 which in turn lifted it from read_memory. */
365 extern void get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
,
366 gdb_byte
*buf
, LONGEST len
);
367 extern ULONGEST
get_target_memory_unsigned (struct target_ops
*ops
,
368 CORE_ADDR addr
, int len
,
369 enum bfd_endian byte_order
);
371 struct thread_info
; /* fwd decl for parameter list below: */
373 /* The type of the callback to the to_async method. */
375 typedef void async_callback_ftype (enum inferior_event_type event_type
,
378 /* Normally target debug printing is purely type-based. However,
379 sometimes it is necessary to override the debug printing on a
380 per-argument basis. This macro can be used, attribute-style, to
381 name the target debug printing function for a particular method
382 argument. FUNC is the name of the function. The macro's
383 definition is empty because it is only used by the
384 make-target-delegates script. */
386 #define TARGET_DEBUG_PRINTER(FUNC)
388 /* These defines are used to mark target_ops methods. The script
389 make-target-delegates scans these and auto-generates the base
390 method implementations. There are four macros that can be used:
392 1. TARGET_DEFAULT_IGNORE. There is no argument. The base method
393 does nothing. This is only valid if the method return type is
396 2. TARGET_DEFAULT_NORETURN. The argument is a function call, like
397 'tcomplain ()'. The base method simply makes this call, which is
398 assumed not to return.
400 3. TARGET_DEFAULT_RETURN. The argument is a C expression. The
401 base method returns this expression's value.
403 4. TARGET_DEFAULT_FUNC. The argument is the name of a function.
404 make-target-delegates does not generate a base method in this case,
405 but instead uses the argument function as the base method. */
407 #define TARGET_DEFAULT_IGNORE()
408 #define TARGET_DEFAULT_NORETURN(ARG)
409 #define TARGET_DEFAULT_RETURN(ARG)
410 #define TARGET_DEFAULT_FUNC(ARG)
412 /* Each target that can be activated with "target TARGET_NAME" passes
413 the address of one of these objects to add_target, which uses the
414 object's address as unique identifier, and registers the "target
415 TARGET_NAME" command using SHORTNAME as target name. */
419 /* Name of this target. */
420 const char *shortname
;
422 /* Name for printing. */
423 const char *longname
;
425 /* Documentation. Does not include trailing newline, and starts
426 with a one-line description (probably similar to longname). */
431 : public refcounted_object
433 /* Return this target's stratum. */
434 virtual strata
stratum () const = 0;
436 /* To the target under this one. */
437 target_ops
*beneath () const;
439 /* Free resources associated with the target. Note that singleton
440 targets, like e.g., native targets, are global objects, not
441 heap allocated, and are thus only deleted on GDB exit. The
442 main teardown entry point is the "close" method, below. */
443 virtual ~target_ops () {}
445 /* Return a reference to this target's unique target_info
447 virtual const target_info
&info () const = 0;
449 /* Name this target type. */
450 const char *shortname () const
451 { return info ().shortname
; }
453 const char *longname () const
454 { return info ().longname
; }
456 /* Close the target. This is where the target can handle
457 teardown. Heap-allocated targets should delete themselves
459 virtual void close ();
461 /* Attaches to a process on the target side. Arguments are as
462 passed to the `attach' command by the user. This routine can
463 be called when the target is not on the target-stack, if the
464 target_ops::can_run method returns 1; in that case, it must push
465 itself onto the stack. Upon exit, the target should be ready
466 for normal operations, and should be ready to deliver the
467 status of the process immediately (without waiting) to an
468 upcoming target_wait call. */
469 virtual bool can_attach ();
470 virtual void attach (const char *, int);
471 virtual void post_attach (int)
472 TARGET_DEFAULT_IGNORE ();
474 /* Detaches from the inferior. Note that on targets that support
475 async execution (i.e., targets where it is possible to detach
476 from programs with threads running), the target is responsible
477 for removing breakpoints from the program before the actual
478 detach, otherwise the program dies when it hits one. */
479 virtual void detach (inferior
*, int)
480 TARGET_DEFAULT_IGNORE ();
482 virtual void disconnect (const char *, int)
483 TARGET_DEFAULT_NORETURN (tcomplain ());
484 virtual void resume (ptid_t
,
485 int TARGET_DEBUG_PRINTER (target_debug_print_step
),
487 TARGET_DEFAULT_NORETURN (noprocess ());
488 virtual void commit_resume ()
489 TARGET_DEFAULT_IGNORE ();
490 /* See target_wait's description. Note that implementations of
491 this method must not assume that inferior_ptid on entry is
492 pointing at the thread or inferior that ends up reporting an
493 event. The reported event could be for some other thread in
494 the current inferior or even for a different process of the
495 current target. inferior_ptid may also be null_ptid on
497 virtual ptid_t
wait (ptid_t
, struct target_waitstatus
*,
498 target_wait_flags options
)
499 TARGET_DEFAULT_FUNC (default_target_wait
);
500 virtual void fetch_registers (struct regcache
*, int)
501 TARGET_DEFAULT_IGNORE ();
502 virtual void store_registers (struct regcache
*, int)
503 TARGET_DEFAULT_NORETURN (noprocess ());
504 virtual void prepare_to_store (struct regcache
*)
505 TARGET_DEFAULT_NORETURN (noprocess ());
507 virtual void files_info ()
508 TARGET_DEFAULT_IGNORE ();
509 virtual int insert_breakpoint (struct gdbarch
*,
510 struct bp_target_info
*)
511 TARGET_DEFAULT_NORETURN (noprocess ());
512 virtual int remove_breakpoint (struct gdbarch
*,
513 struct bp_target_info
*,
514 enum remove_bp_reason
)
515 TARGET_DEFAULT_NORETURN (noprocess ());
517 /* Returns true if the target stopped because it executed a
518 software breakpoint. This is necessary for correct background
519 execution / non-stop mode operation, and for correct PC
520 adjustment on targets where the PC needs to be adjusted when a
521 software breakpoint triggers. In these modes, by the time GDB
522 processes a breakpoint event, the breakpoint may already be
523 done from the target, so GDB needs to be able to tell whether
524 it should ignore the event and whether it should adjust the PC.
525 See adjust_pc_after_break. */
526 virtual bool stopped_by_sw_breakpoint ()
527 TARGET_DEFAULT_RETURN (false);
528 /* Returns true if the above method is supported. */
529 virtual bool supports_stopped_by_sw_breakpoint ()
530 TARGET_DEFAULT_RETURN (false);
532 /* Returns true if the target stopped for a hardware breakpoint.
533 Likewise, if the target supports hardware breakpoints, this
534 method is necessary for correct background execution / non-stop
535 mode operation. Even though hardware breakpoints do not
536 require PC adjustment, GDB needs to be able to tell whether the
537 hardware breakpoint event is a delayed event for a breakpoint
538 that is already gone and should thus be ignored. */
539 virtual bool stopped_by_hw_breakpoint ()
540 TARGET_DEFAULT_RETURN (false);
541 /* Returns true if the above method is supported. */
542 virtual bool supports_stopped_by_hw_breakpoint ()
543 TARGET_DEFAULT_RETURN (false);
545 virtual int can_use_hw_breakpoint (enum bptype
, int, int)
546 TARGET_DEFAULT_RETURN (0);
547 virtual int ranged_break_num_registers ()
548 TARGET_DEFAULT_RETURN (-1);
549 virtual int insert_hw_breakpoint (struct gdbarch
*,
550 struct bp_target_info
*)
551 TARGET_DEFAULT_RETURN (-1);
552 virtual int remove_hw_breakpoint (struct gdbarch
*,
553 struct bp_target_info
*)
554 TARGET_DEFAULT_RETURN (-1);
556 /* Documentation of what the two routines below are expected to do is
557 provided with the corresponding target_* macros. */
558 virtual int remove_watchpoint (CORE_ADDR
, int,
559 enum target_hw_bp_type
, struct expression
*)
560 TARGET_DEFAULT_RETURN (-1);
561 virtual int insert_watchpoint (CORE_ADDR
, int,
562 enum target_hw_bp_type
, struct expression
*)
563 TARGET_DEFAULT_RETURN (-1);
565 virtual int insert_mask_watchpoint (CORE_ADDR
, CORE_ADDR
,
566 enum target_hw_bp_type
)
567 TARGET_DEFAULT_RETURN (1);
568 virtual int remove_mask_watchpoint (CORE_ADDR
, CORE_ADDR
,
569 enum target_hw_bp_type
)
570 TARGET_DEFAULT_RETURN (1);
571 virtual bool stopped_by_watchpoint ()
572 TARGET_DEFAULT_RETURN (false);
573 virtual bool have_steppable_watchpoint ()
574 TARGET_DEFAULT_RETURN (false);
575 virtual bool stopped_data_address (CORE_ADDR
*)
576 TARGET_DEFAULT_RETURN (false);
577 virtual bool watchpoint_addr_within_range (CORE_ADDR
, CORE_ADDR
, int)
578 TARGET_DEFAULT_FUNC (default_watchpoint_addr_within_range
);
580 /* Documentation of this routine is provided with the corresponding
582 virtual int region_ok_for_hw_watchpoint (CORE_ADDR
, int)
583 TARGET_DEFAULT_FUNC (default_region_ok_for_hw_watchpoint
);
585 virtual bool can_accel_watchpoint_condition (CORE_ADDR
, int, int,
587 TARGET_DEFAULT_RETURN (false);
588 virtual int masked_watch_num_registers (CORE_ADDR
, CORE_ADDR
)
589 TARGET_DEFAULT_RETURN (-1);
591 /* Return 1 for sure target can do single step. Return -1 for
592 unknown. Return 0 for target can't do. */
593 virtual int can_do_single_step ()
594 TARGET_DEFAULT_RETURN (-1);
596 virtual bool supports_terminal_ours ()
597 TARGET_DEFAULT_RETURN (false);
598 virtual void terminal_init ()
599 TARGET_DEFAULT_IGNORE ();
600 virtual void terminal_inferior ()
601 TARGET_DEFAULT_IGNORE ();
602 virtual void terminal_save_inferior ()
603 TARGET_DEFAULT_IGNORE ();
604 virtual void terminal_ours_for_output ()
605 TARGET_DEFAULT_IGNORE ();
606 virtual void terminal_ours ()
607 TARGET_DEFAULT_IGNORE ();
608 virtual void terminal_info (const char *, int)
609 TARGET_DEFAULT_FUNC (default_terminal_info
);
611 TARGET_DEFAULT_NORETURN (noprocess ());
612 virtual void load (const char *, int)
613 TARGET_DEFAULT_NORETURN (tcomplain ());
614 /* Start an inferior process and set inferior_ptid to its pid.
615 EXEC_FILE is the file to run.
616 ALLARGS is a string containing the arguments to the program.
617 ENV is the environment vector to pass. Errors reported with error().
618 On VxWorks and various standalone systems, we ignore exec_file. */
619 virtual bool can_create_inferior ();
620 virtual void create_inferior (const char *, const std::string
&,
622 virtual void post_startup_inferior (ptid_t
)
623 TARGET_DEFAULT_IGNORE ();
624 virtual int insert_fork_catchpoint (int)
625 TARGET_DEFAULT_RETURN (1);
626 virtual int remove_fork_catchpoint (int)
627 TARGET_DEFAULT_RETURN (1);
628 virtual int insert_vfork_catchpoint (int)
629 TARGET_DEFAULT_RETURN (1);
630 virtual int remove_vfork_catchpoint (int)
631 TARGET_DEFAULT_RETURN (1);
632 virtual bool follow_fork (bool, bool)
633 TARGET_DEFAULT_FUNC (default_follow_fork
);
634 virtual int insert_exec_catchpoint (int)
635 TARGET_DEFAULT_RETURN (1);
636 virtual int remove_exec_catchpoint (int)
637 TARGET_DEFAULT_RETURN (1);
638 virtual void follow_exec (struct inferior
*, const char *)
639 TARGET_DEFAULT_IGNORE ();
640 virtual int set_syscall_catchpoint (int, bool, int,
641 gdb::array_view
<const int>)
642 TARGET_DEFAULT_RETURN (1);
643 virtual void mourn_inferior ()
644 TARGET_DEFAULT_FUNC (default_mourn_inferior
);
646 /* Note that can_run is special and can be invoked on an unpushed
647 target. Targets defining this method must also define
648 to_can_async_p and to_supports_non_stop. */
649 virtual bool can_run ();
651 /* Documentation of this routine is provided with the corresponding
653 virtual void pass_signals (gdb::array_view
<const unsigned char> TARGET_DEBUG_PRINTER (target_debug_print_signals
))
654 TARGET_DEFAULT_IGNORE ();
656 /* Documentation of this routine is provided with the
657 corresponding target_* function. */
658 virtual void program_signals (gdb::array_view
<const unsigned char> TARGET_DEBUG_PRINTER (target_debug_print_signals
))
659 TARGET_DEFAULT_IGNORE ();
661 virtual bool thread_alive (ptid_t ptid
)
662 TARGET_DEFAULT_RETURN (false);
663 virtual void update_thread_list ()
664 TARGET_DEFAULT_IGNORE ();
665 virtual std::string
pid_to_str (ptid_t
)
666 TARGET_DEFAULT_FUNC (default_pid_to_str
);
667 virtual const char *extra_thread_info (thread_info
*)
668 TARGET_DEFAULT_RETURN (NULL
);
669 virtual const char *thread_name (thread_info
*)
670 TARGET_DEFAULT_RETURN (NULL
);
671 virtual thread_info
*thread_handle_to_thread_info (const gdb_byte
*,
674 TARGET_DEFAULT_RETURN (NULL
);
675 /* See target_thread_info_to_thread_handle. */
676 virtual gdb::byte_vector
thread_info_to_thread_handle (struct thread_info
*)
677 TARGET_DEFAULT_RETURN (gdb::byte_vector ());
678 virtual void stop (ptid_t
)
679 TARGET_DEFAULT_IGNORE ();
680 virtual void interrupt ()
681 TARGET_DEFAULT_IGNORE ();
682 virtual void pass_ctrlc ()
683 TARGET_DEFAULT_FUNC (default_target_pass_ctrlc
);
684 virtual void rcmd (const char *command
, struct ui_file
*output
)
685 TARGET_DEFAULT_FUNC (default_rcmd
);
686 virtual char *pid_to_exec_file (int pid
)
687 TARGET_DEFAULT_RETURN (NULL
);
688 virtual void log_command (const char *)
689 TARGET_DEFAULT_IGNORE ();
690 virtual const target_section_table
*get_section_table ()
691 TARGET_DEFAULT_RETURN (default_get_section_table ());
693 /* Provide default values for all "must have" methods. */
694 virtual bool has_all_memory () { return false; }
695 virtual bool has_memory () { return false; }
696 virtual bool has_stack () { return false; }
697 virtual bool has_registers () { return false; }
698 virtual bool has_execution (inferior
*inf
) { return false; }
700 /* Control thread execution. */
701 virtual thread_control_capabilities
get_thread_control_capabilities ()
702 TARGET_DEFAULT_RETURN (tc_none
);
703 virtual bool attach_no_wait ()
704 TARGET_DEFAULT_RETURN (0);
705 /* This method must be implemented in some situations. See the
706 comment on 'can_run'. */
707 virtual bool can_async_p ()
708 TARGET_DEFAULT_RETURN (false);
709 virtual bool is_async_p ()
710 TARGET_DEFAULT_RETURN (false);
711 virtual void async (int)
712 TARGET_DEFAULT_NORETURN (tcomplain ());
713 virtual int async_wait_fd ()
714 TARGET_DEFAULT_NORETURN (noprocess ());
715 virtual void thread_events (int)
716 TARGET_DEFAULT_IGNORE ();
717 /* This method must be implemented in some situations. See the
718 comment on 'can_run'. */
719 virtual bool supports_non_stop ()
720 TARGET_DEFAULT_RETURN (false);
721 /* Return true if the target operates in non-stop mode even with
722 "set non-stop off". */
723 virtual bool always_non_stop_p ()
724 TARGET_DEFAULT_RETURN (false);
725 /* find_memory_regions support method for gcore */
726 virtual int find_memory_regions (find_memory_region_ftype func
, void *data
)
727 TARGET_DEFAULT_FUNC (dummy_find_memory_regions
);
728 /* make_corefile_notes support method for gcore */
729 virtual gdb::unique_xmalloc_ptr
<char> make_corefile_notes (bfd
*, int *)
730 TARGET_DEFAULT_FUNC (dummy_make_corefile_notes
);
731 /* get_bookmark support method for bookmarks */
732 virtual gdb_byte
*get_bookmark (const char *, int)
733 TARGET_DEFAULT_NORETURN (tcomplain ());
734 /* goto_bookmark support method for bookmarks */
735 virtual void goto_bookmark (const gdb_byte
*, int)
736 TARGET_DEFAULT_NORETURN (tcomplain ());
737 /* Return the thread-local address at OFFSET in the
738 thread-local storage for the thread PTID and the shared library
739 or executable file given by LOAD_MODULE_ADDR. If that block of
740 thread-local storage hasn't been allocated yet, this function
741 may throw an error. LOAD_MODULE_ADDR may be zero for statically
742 linked multithreaded inferiors. */
743 virtual CORE_ADDR
get_thread_local_address (ptid_t ptid
,
744 CORE_ADDR load_module_addr
,
746 TARGET_DEFAULT_NORETURN (generic_tls_error ());
748 /* Request that OPS transfer up to LEN addressable units of the target's
749 OBJECT. When reading from a memory object, the size of an addressable
750 unit is architecture dependent and can be found using
751 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is
752 1 byte long. The OFFSET, for a seekable object, specifies the
753 starting point. The ANNEX can be used to provide additional
754 data-specific information to the target.
756 Return the transferred status, error or OK (an
757 'enum target_xfer_status' value). Save the number of addressable units
758 actually transferred in *XFERED_LEN if transfer is successful
759 (TARGET_XFER_OK) or the number unavailable units if the requested
760 data is unavailable (TARGET_XFER_UNAVAILABLE). *XFERED_LEN
761 smaller than LEN does not indicate the end of the object, only
762 the end of the transfer; higher level code should continue
763 transferring if desired. This is handled in target.c.
765 The interface does not support a "retry" mechanism. Instead it
766 assumes that at least one addressable unit will be transfered on each
769 NOTE: cagney/2003-10-17: The current interface can lead to
770 fragmented transfers. Lower target levels should not implement
771 hacks, such as enlarging the transfer, in an attempt to
772 compensate for this. Instead, the target stack should be
773 extended so that it implements supply/collect methods and a
774 look-aside object cache. With that available, the lowest
775 target can safely and freely "push" data up the stack.
777 See target_read and target_write for more information. One,
778 and only one, of readbuf or writebuf must be non-NULL. */
780 virtual enum target_xfer_status
xfer_partial (enum target_object object
,
783 const gdb_byte
*writebuf
,
784 ULONGEST offset
, ULONGEST len
,
785 ULONGEST
*xfered_len
)
786 TARGET_DEFAULT_RETURN (TARGET_XFER_E_IO
);
788 /* Return the limit on the size of any single memory transfer
791 virtual ULONGEST
get_memory_xfer_limit ()
792 TARGET_DEFAULT_RETURN (ULONGEST_MAX
);
794 /* Returns the memory map for the target. A return value of NULL
795 means that no memory map is available. If a memory address
796 does not fall within any returned regions, it's assumed to be
797 RAM. The returned memory regions should not overlap.
799 The order of regions does not matter; target_memory_map will
800 sort regions by starting address. For that reason, this
801 function should not be called directly except via
804 This method should not cache data; if the memory map could
805 change unexpectedly, it should be invalidated, and higher
806 layers will re-fetch it. */
807 virtual std::vector
<mem_region
> memory_map ()
808 TARGET_DEFAULT_RETURN (std::vector
<mem_region
> ());
810 /* Erases the region of flash memory starting at ADDRESS, of
813 Precondition: both ADDRESS and ADDRESS+LENGTH should be aligned
814 on flash block boundaries, as reported by 'to_memory_map'. */
815 virtual void flash_erase (ULONGEST address
, LONGEST length
)
816 TARGET_DEFAULT_NORETURN (tcomplain ());
818 /* Finishes a flash memory write sequence. After this operation
819 all flash memory should be available for writing and the result
820 of reading from areas written by 'to_flash_write' should be
821 equal to what was written. */
822 virtual void flash_done ()
823 TARGET_DEFAULT_NORETURN (tcomplain ());
825 /* Describe the architecture-specific features of this target. If
826 OPS doesn't have a description, this should delegate to the
827 "beneath" target. Returns the description found, or NULL if no
828 description was available. */
829 virtual const struct target_desc
*read_description ()
830 TARGET_DEFAULT_RETURN (NULL
);
832 /* Build the PTID of the thread on which a given task is running,
833 based on LWP and THREAD. These values are extracted from the
834 task Private_Data section of the Ada Task Control Block, and
835 their interpretation depends on the target. */
836 virtual ptid_t
get_ada_task_ptid (long lwp
, long thread
)
837 TARGET_DEFAULT_FUNC (default_get_ada_task_ptid
);
839 /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
840 Return 0 if *READPTR is already at the end of the buffer.
841 Return -1 if there is insufficient buffer for a whole entry.
842 Return 1 if an entry was read into *TYPEP and *VALP. */
843 virtual int auxv_parse (gdb_byte
**readptr
,
844 gdb_byte
*endptr
, CORE_ADDR
*typep
, CORE_ADDR
*valp
)
845 TARGET_DEFAULT_FUNC (default_auxv_parse
);
847 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
848 sequence of bytes in PATTERN with length PATTERN_LEN.
850 The result is 1 if found, 0 if not found, and -1 if there was an error
851 requiring halting of the search (e.g. memory read error).
852 If the pattern is found the address is recorded in FOUND_ADDRP. */
853 virtual int search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
854 const gdb_byte
*pattern
, ULONGEST pattern_len
,
855 CORE_ADDR
*found_addrp
)
856 TARGET_DEFAULT_FUNC (default_search_memory
);
858 /* Can target execute in reverse? */
859 virtual bool can_execute_reverse ()
860 TARGET_DEFAULT_RETURN (false);
862 /* The direction the target is currently executing. Must be
863 implemented on targets that support reverse execution and async
864 mode. The default simply returns forward execution. */
865 virtual enum exec_direction_kind
execution_direction ()
866 TARGET_DEFAULT_FUNC (default_execution_direction
);
868 /* Does this target support debugging multiple processes
870 virtual bool supports_multi_process ()
871 TARGET_DEFAULT_RETURN (false);
873 /* Does this target support enabling and disabling tracepoints while a trace
874 experiment is running? */
875 virtual bool supports_enable_disable_tracepoint ()
876 TARGET_DEFAULT_RETURN (false);
878 /* Does this target support disabling address space randomization? */
879 virtual bool supports_disable_randomization ()
880 TARGET_DEFAULT_FUNC (find_default_supports_disable_randomization
);
882 /* Does this target support the tracenz bytecode for string collection? */
883 virtual bool supports_string_tracing ()
884 TARGET_DEFAULT_RETURN (false);
886 /* Does this target support evaluation of breakpoint conditions on its
888 virtual bool supports_evaluation_of_breakpoint_conditions ()
889 TARGET_DEFAULT_RETURN (false);
891 /* Does this target support native dumpcore API? */
892 virtual bool supports_dumpcore ()
893 TARGET_DEFAULT_RETURN (false);
895 /* Generate the core file with native target API. */
896 virtual void dumpcore (const char *filename
)
897 TARGET_DEFAULT_IGNORE ();
899 /* Does this target support evaluation of breakpoint commands on its
901 virtual bool can_run_breakpoint_commands ()
902 TARGET_DEFAULT_RETURN (false);
904 /* Determine current architecture of thread PTID.
906 The target is supposed to determine the architecture of the code where
907 the target is currently stopped at. The architecture information is
908 used to perform decr_pc_after_break adjustment, and also to determine
909 the frame architecture of the innermost frame. ptrace operations need to
910 operate according to target_gdbarch (). */
911 virtual struct gdbarch
*thread_architecture (ptid_t
)
912 TARGET_DEFAULT_RETURN (NULL
);
914 /* Determine current address space of thread PTID. */
915 virtual struct address_space
*thread_address_space (ptid_t
)
916 TARGET_DEFAULT_RETURN (NULL
);
918 /* Target file operations. */
920 /* Return true if the filesystem seen by the current inferior
921 is the local filesystem, false otherwise. */
922 virtual bool filesystem_is_local ()
923 TARGET_DEFAULT_RETURN (true);
925 /* Open FILENAME on the target, in the filesystem as seen by INF,
926 using FLAGS and MODE. If INF is NULL, use the filesystem seen
927 by the debugger (GDB or, for remote targets, the remote stub).
928 If WARN_IF_SLOW is nonzero, print a warning message if the file
929 is being accessed over a link that may be slow. Return a
930 target file descriptor, or -1 if an error occurs (and set
932 virtual int fileio_open (struct inferior
*inf
, const char *filename
,
933 int flags
, int mode
, int warn_if_slow
,
936 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
937 Return the number of bytes written, or -1 if an error occurs
938 (and set *TARGET_ERRNO). */
939 virtual int fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
940 ULONGEST offset
, int *target_errno
);
942 /* Read up to LEN bytes FD on the target into READ_BUF.
943 Return the number of bytes read, or -1 if an error occurs
944 (and set *TARGET_ERRNO). */
945 virtual int fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
946 ULONGEST offset
, int *target_errno
);
948 /* Get information about the file opened as FD and put it in
949 SB. Return 0 on success, or -1 if an error occurs (and set
951 virtual int fileio_fstat (int fd
, struct stat
*sb
, int *target_errno
);
953 /* Close FD on the target. Return 0, or -1 if an error occurs
954 (and set *TARGET_ERRNO). */
955 virtual int fileio_close (int fd
, int *target_errno
);
957 /* Unlink FILENAME on the target, in the filesystem as seen by
958 INF. If INF is NULL, use the filesystem seen by the debugger
959 (GDB or, for remote targets, the remote stub). Return 0, or
960 -1 if an error occurs (and set *TARGET_ERRNO). */
961 virtual int fileio_unlink (struct inferior
*inf
,
962 const char *filename
,
965 /* Read value of symbolic link FILENAME on the target, in the
966 filesystem as seen by INF. If INF is NULL, use the filesystem
967 seen by the debugger (GDB or, for remote targets, the remote
968 stub). Return a string, or an empty optional if an error
969 occurs (and set *TARGET_ERRNO). */
970 virtual gdb::optional
<std::string
> fileio_readlink (struct inferior
*inf
,
971 const char *filename
,
974 /* Implement the "info proc" command. Returns true if the target
975 actually implemented the command, false otherwise. */
976 virtual bool info_proc (const char *, enum info_proc_what
);
978 /* Tracepoint-related operations. */
980 /* Prepare the target for a tracing run. */
981 virtual void trace_init ()
982 TARGET_DEFAULT_NORETURN (tcomplain ());
984 /* Send full details of a tracepoint location to the target. */
985 virtual void download_tracepoint (struct bp_location
*location
)
986 TARGET_DEFAULT_NORETURN (tcomplain ());
988 /* Is the target able to download tracepoint locations in current
990 virtual bool can_download_tracepoint ()
991 TARGET_DEFAULT_RETURN (false);
993 /* Send full details of a trace state variable to the target. */
994 virtual void download_trace_state_variable (const trace_state_variable
&tsv
)
995 TARGET_DEFAULT_NORETURN (tcomplain ());
997 /* Enable a tracepoint on the target. */
998 virtual void enable_tracepoint (struct bp_location
*location
)
999 TARGET_DEFAULT_NORETURN (tcomplain ());
1001 /* Disable a tracepoint on the target. */
1002 virtual void disable_tracepoint (struct bp_location
*location
)
1003 TARGET_DEFAULT_NORETURN (tcomplain ());
1005 /* Inform the target info of memory regions that are readonly
1006 (such as text sections), and so it should return data from
1007 those rather than look in the trace buffer. */
1008 virtual void trace_set_readonly_regions ()
1009 TARGET_DEFAULT_NORETURN (tcomplain ());
1011 /* Start a trace run. */
1012 virtual void trace_start ()
1013 TARGET_DEFAULT_NORETURN (tcomplain ());
1015 /* Get the current status of a tracing run. */
1016 virtual int get_trace_status (struct trace_status
*ts
)
1017 TARGET_DEFAULT_RETURN (-1);
1019 virtual void get_tracepoint_status (struct breakpoint
*tp
,
1020 struct uploaded_tp
*utp
)
1021 TARGET_DEFAULT_NORETURN (tcomplain ());
1023 /* Stop a trace run. */
1024 virtual void trace_stop ()
1025 TARGET_DEFAULT_NORETURN (tcomplain ());
1027 /* Ask the target to find a trace frame of the given type TYPE,
1028 using NUM, ADDR1, and ADDR2 as search parameters. Returns the
1029 number of the trace frame, and also the tracepoint number at
1030 TPP. If no trace frame matches, return -1. May throw if the
1032 virtual int trace_find (enum trace_find_type type
, int num
,
1033 CORE_ADDR addr1
, CORE_ADDR addr2
, int *tpp
)
1034 TARGET_DEFAULT_RETURN (-1);
1036 /* Get the value of the trace state variable number TSV, returning
1037 1 if the value is known and writing the value itself into the
1038 location pointed to by VAL, else returning 0. */
1039 virtual bool get_trace_state_variable_value (int tsv
, LONGEST
*val
)
1040 TARGET_DEFAULT_RETURN (false);
1042 virtual int save_trace_data (const char *filename
)
1043 TARGET_DEFAULT_NORETURN (tcomplain ());
1045 virtual int upload_tracepoints (struct uploaded_tp
**utpp
)
1046 TARGET_DEFAULT_RETURN (0);
1048 virtual int upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
1049 TARGET_DEFAULT_RETURN (0);
1051 virtual LONGEST
get_raw_trace_data (gdb_byte
*buf
,
1052 ULONGEST offset
, LONGEST len
)
1053 TARGET_DEFAULT_NORETURN (tcomplain ());
1055 /* Get the minimum length of instruction on which a fast tracepoint
1056 may be set on the target. If this operation is unsupported,
1057 return -1. If for some reason the minimum length cannot be
1058 determined, return 0. */
1059 virtual int get_min_fast_tracepoint_insn_len ()
1060 TARGET_DEFAULT_RETURN (-1);
1062 /* Set the target's tracing behavior in response to unexpected
1063 disconnection - set VAL to 1 to keep tracing, 0 to stop. */
1064 virtual void set_disconnected_tracing (int val
)
1065 TARGET_DEFAULT_IGNORE ();
1066 virtual void set_circular_trace_buffer (int val
)
1067 TARGET_DEFAULT_IGNORE ();
1068 /* Set the size of trace buffer in the target. */
1069 virtual void set_trace_buffer_size (LONGEST val
)
1070 TARGET_DEFAULT_IGNORE ();
1072 /* Add/change textual notes about the trace run, returning true if
1073 successful, false otherwise. */
1074 virtual bool set_trace_notes (const char *user
, const char *notes
,
1075 const char *stopnotes
)
1076 TARGET_DEFAULT_RETURN (false);
1078 /* Return the processor core that thread PTID was last seen on.
1079 This information is updated only when:
1080 - update_thread_list is called
1082 If the core cannot be determined -- either for the specified
1083 thread, or right now, or in this debug session, or for this
1084 target -- return -1. */
1085 virtual int core_of_thread (ptid_t ptid
)
1086 TARGET_DEFAULT_RETURN (-1);
1088 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range
1089 matches the contents of [DATA,DATA+SIZE). Returns 1 if there's
1090 a match, 0 if there's a mismatch, and -1 if an error is
1091 encountered while reading memory. */
1092 virtual int verify_memory (const gdb_byte
*data
,
1093 CORE_ADDR memaddr
, ULONGEST size
)
1094 TARGET_DEFAULT_FUNC (default_verify_memory
);
1096 /* Return the address of the start of the Thread Information Block
1097 a Windows OS specific feature. */
1098 virtual bool get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
1099 TARGET_DEFAULT_NORETURN (tcomplain ());
1101 /* Send the new settings of write permission variables. */
1102 virtual void set_permissions ()
1103 TARGET_DEFAULT_IGNORE ();
1105 /* Look for a static tracepoint marker at ADDR, and fill in MARKER
1106 with its details. Return true on success, false on failure. */
1107 virtual bool static_tracepoint_marker_at (CORE_ADDR
,
1108 static_tracepoint_marker
*marker
)
1109 TARGET_DEFAULT_RETURN (false);
1111 /* Return a vector of all tracepoints markers string id ID, or all
1112 markers if ID is NULL. */
1113 virtual std::vector
<static_tracepoint_marker
>
1114 static_tracepoint_markers_by_strid (const char *id
)
1115 TARGET_DEFAULT_NORETURN (tcomplain ());
1117 /* Return a traceframe info object describing the current
1118 traceframe's contents. This method should not cache data;
1119 higher layers take care of caching, invalidating, and
1120 re-fetching when necessary. */
1121 virtual traceframe_info_up
traceframe_info ()
1122 TARGET_DEFAULT_NORETURN (tcomplain ());
1124 /* Ask the target to use or not to use agent according to USE.
1125 Return true if successful, false otherwise. */
1126 virtual bool use_agent (bool use
)
1127 TARGET_DEFAULT_NORETURN (tcomplain ());
1129 /* Is the target able to use agent in current state? */
1130 virtual bool can_use_agent ()
1131 TARGET_DEFAULT_RETURN (false);
1133 /* Enable branch tracing for PTID using CONF configuration.
1134 Return a branch trace target information struct for reading and for
1135 disabling branch trace. */
1136 virtual struct btrace_target_info
*enable_btrace (ptid_t ptid
,
1137 const struct btrace_config
*conf
)
1138 TARGET_DEFAULT_NORETURN (tcomplain ());
1140 /* Disable branch tracing and deallocate TINFO. */
1141 virtual void disable_btrace (struct btrace_target_info
*tinfo
)
1142 TARGET_DEFAULT_NORETURN (tcomplain ());
1144 /* Disable branch tracing and deallocate TINFO. This function is similar
1145 to to_disable_btrace, except that it is called during teardown and is
1146 only allowed to perform actions that are safe. A counter-example would
1147 be attempting to talk to a remote target. */
1148 virtual void teardown_btrace (struct btrace_target_info
*tinfo
)
1149 TARGET_DEFAULT_NORETURN (tcomplain ());
1151 /* Read branch trace data for the thread indicated by BTINFO into DATA.
1152 DATA is cleared before new trace is added. */
1153 virtual enum btrace_error
read_btrace (struct btrace_data
*data
,
1154 struct btrace_target_info
*btinfo
,
1155 enum btrace_read_type type
)
1156 TARGET_DEFAULT_NORETURN (tcomplain ());
1158 /* Get the branch trace configuration. */
1159 virtual const struct btrace_config
*btrace_conf (const struct btrace_target_info
*)
1160 TARGET_DEFAULT_RETURN (NULL
);
1162 /* Current recording method. */
1163 virtual enum record_method
record_method (ptid_t ptid
)
1164 TARGET_DEFAULT_RETURN (RECORD_METHOD_NONE
);
1166 /* Stop trace recording. */
1167 virtual void stop_recording ()
1168 TARGET_DEFAULT_IGNORE ();
1170 /* Print information about the recording. */
1171 virtual void info_record ()
1172 TARGET_DEFAULT_IGNORE ();
1174 /* Save the recorded execution trace into a file. */
1175 virtual void save_record (const char *filename
)
1176 TARGET_DEFAULT_NORETURN (tcomplain ());
1178 /* Delete the recorded execution trace from the current position
1180 virtual bool supports_delete_record ()
1181 TARGET_DEFAULT_RETURN (false);
1182 virtual void delete_record ()
1183 TARGET_DEFAULT_NORETURN (tcomplain ());
1185 /* Query if the record target is currently replaying PTID. */
1186 virtual bool record_is_replaying (ptid_t ptid
)
1187 TARGET_DEFAULT_RETURN (false);
1189 /* Query if the record target will replay PTID if it were resumed in
1190 execution direction DIR. */
1191 virtual bool record_will_replay (ptid_t ptid
, int dir
)
1192 TARGET_DEFAULT_RETURN (false);
1194 /* Stop replaying. */
1195 virtual void record_stop_replaying ()
1196 TARGET_DEFAULT_IGNORE ();
1198 /* Go to the begin of the execution trace. */
1199 virtual void goto_record_begin ()
1200 TARGET_DEFAULT_NORETURN (tcomplain ());
1202 /* Go to the end of the execution trace. */
1203 virtual void goto_record_end ()
1204 TARGET_DEFAULT_NORETURN (tcomplain ());
1206 /* Go to a specific location in the recorded execution trace. */
1207 virtual void goto_record (ULONGEST insn
)
1208 TARGET_DEFAULT_NORETURN (tcomplain ());
1210 /* Disassemble SIZE instructions in the recorded execution trace from
1211 the current position.
1212 If SIZE < 0, disassemble abs (SIZE) preceding instructions; otherwise,
1213 disassemble SIZE succeeding instructions. */
1214 virtual void insn_history (int size
, gdb_disassembly_flags flags
)
1215 TARGET_DEFAULT_NORETURN (tcomplain ());
1217 /* Disassemble SIZE instructions in the recorded execution trace around
1219 If SIZE < 0, disassemble abs (SIZE) instructions before FROM; otherwise,
1220 disassemble SIZE instructions after FROM. */
1221 virtual void insn_history_from (ULONGEST from
, int size
,
1222 gdb_disassembly_flags flags
)
1223 TARGET_DEFAULT_NORETURN (tcomplain ());
1225 /* Disassemble a section of the recorded execution trace from instruction
1226 BEGIN (inclusive) to instruction END (inclusive). */
1227 virtual void insn_history_range (ULONGEST begin
, ULONGEST end
,
1228 gdb_disassembly_flags flags
)
1229 TARGET_DEFAULT_NORETURN (tcomplain ());
1231 /* Print a function trace of the recorded execution trace.
1232 If SIZE < 0, print abs (SIZE) preceding functions; otherwise, print SIZE
1233 succeeding functions. */
1234 virtual void call_history (int size
, record_print_flags flags
)
1235 TARGET_DEFAULT_NORETURN (tcomplain ());
1237 /* Print a function trace of the recorded execution trace starting
1239 If SIZE < 0, print abs (SIZE) functions before FROM; otherwise, print
1240 SIZE functions after FROM. */
1241 virtual void call_history_from (ULONGEST begin
, int size
, record_print_flags flags
)
1242 TARGET_DEFAULT_NORETURN (tcomplain ());
1244 /* Print a function trace of an execution trace section from function BEGIN
1245 (inclusive) to function END (inclusive). */
1246 virtual void call_history_range (ULONGEST begin
, ULONGEST end
, record_print_flags flags
)
1247 TARGET_DEFAULT_NORETURN (tcomplain ());
1249 /* True if TARGET_OBJECT_LIBRARIES_SVR4 may be read with a
1251 virtual bool augmented_libraries_svr4_read ()
1252 TARGET_DEFAULT_RETURN (false);
1254 /* Those unwinders are tried before any other arch unwinders. If
1255 SELF doesn't have unwinders, it should delegate to the
1256 "beneath" target. */
1257 virtual const struct frame_unwind
*get_unwinder ()
1258 TARGET_DEFAULT_RETURN (NULL
);
1260 virtual const struct frame_unwind
*get_tailcall_unwinder ()
1261 TARGET_DEFAULT_RETURN (NULL
);
1263 /* Prepare to generate a core file. */
1264 virtual void prepare_to_generate_core ()
1265 TARGET_DEFAULT_IGNORE ();
1267 /* Cleanup after generating a core file. */
1268 virtual void done_generating_core ()
1269 TARGET_DEFAULT_IGNORE ();
1271 /* Returns true if the target supports memory tagging, false otherwise. */
1272 virtual bool supports_memory_tagging ()
1273 TARGET_DEFAULT_RETURN (false);
1275 /* Return the allocated memory tags of type TYPE associated with
1276 [ADDRESS, ADDRESS + LEN) in TAGS.
1278 LEN is the number of bytes in the memory range. TAGS is a vector of
1279 bytes containing the tags found in the above memory range.
1281 It is up to the architecture/target to interpret the bytes in the TAGS
1282 vector and read the tags appropriately.
1284 Returns true if fetching the tags succeeded and false otherwise. */
1285 virtual bool fetch_memtags (CORE_ADDR address
, size_t len
,
1286 gdb::byte_vector
&tags
, int type
)
1287 TARGET_DEFAULT_NORETURN (tcomplain ());
1289 /* Write the allocation tags of type TYPE contained in TAGS to the memory
1290 range [ADDRESS, ADDRESS + LEN).
1292 LEN is the number of bytes in the memory range. TAGS is a vector of
1293 bytes containing the tags to be stored to the memory range.
1295 It is up to the architecture/target to interpret the bytes in the TAGS
1296 vector and store them appropriately.
1298 Returns true if storing the tags succeeded and false otherwise. */
1299 virtual bool store_memtags (CORE_ADDR address
, size_t len
,
1300 const gdb::byte_vector
&tags
, int type
)
1301 TARGET_DEFAULT_NORETURN (tcomplain ());
1304 /* Deleter for std::unique_ptr. See comments in
1305 target_ops::~target_ops and target_ops::close about heap-allocated
1307 struct target_ops_deleter
1309 void operator() (target_ops
*target
)
1315 /* A unique pointer for target_ops. */
1316 typedef std::unique_ptr
<target_ops
, target_ops_deleter
> target_ops_up
;
1318 /* Decref a target and close if, if there are no references left. */
1319 extern void decref_target (target_ops
*t
);
1321 /* A policy class to interface gdb::ref_ptr with target_ops. */
1323 struct target_ops_ref_policy
1325 static void incref (target_ops
*t
)
1330 static void decref (target_ops
*t
)
1336 /* A gdb::ref_ptr pointer to a target_ops. */
1337 typedef gdb::ref_ptr
<target_ops
, target_ops_ref_policy
> target_ops_ref
;
1339 /* Native target backends call this once at initialization time to
1340 inform the core about which is the target that can respond to "run"
1341 or "attach". Note: native targets are always singletons. */
1342 extern void set_native_target (target_ops
*target
);
1344 /* Get the registered native target, if there's one. Otherwise return
1346 extern target_ops
*get_native_target ();
1348 /* Type that manages a target stack. See description of target stacks
1349 and strata at the top of the file. */
1354 target_stack () = default;
1355 DISABLE_COPY_AND_ASSIGN (target_stack
);
1357 /* Push a new target into the stack of the existing target
1358 accessors, possibly superseding some existing accessor. */
1359 void push (target_ops
*t
);
1361 /* Remove a target from the stack, wherever it may be. Return true
1362 if it was removed, false otherwise. */
1363 bool unpush (target_ops
*t
);
1365 /* Returns true if T is pushed on the target stack. */
1366 bool is_pushed (target_ops
*t
) const
1367 { return at (t
->stratum ()) == t
; }
1369 /* Return the target at STRATUM. */
1370 target_ops
*at (strata stratum
) const { return m_stack
[stratum
]; }
1372 /* Return the target at the top of the stack. */
1373 target_ops
*top () const { return at (m_top
); }
1375 /* Find the next target down the stack from the specified target. */
1376 target_ops
*find_beneath (const target_ops
*t
) const;
1379 /* The stratum of the top target. */
1380 enum strata m_top
{};
1382 /* The stack, represented as an array, with one slot per stratum.
1383 If no target is pushed at some stratum, the corresponding slot is
1385 target_ops
*m_stack
[(int) debug_stratum
+ 1] {};
1388 /* Return the dummy target. */
1389 extern target_ops
*get_dummy_target ();
1391 /* Define easy words for doing these operations on our current target. */
1393 extern const char *target_shortname ();
1395 /* Does whatever cleanup is required for a target that we are no
1396 longer going to be calling. This routine is automatically always
1397 called after popping the target off the target stack - the target's
1398 own methods are no longer available through the target vector.
1399 Closing file descriptors and freeing all memory allocated memory are
1400 typical things it should do. */
1402 void target_close (struct target_ops
*targ
);
1404 /* Find the correct target to use for "attach". If a target on the
1405 current stack supports attaching, then it is returned. Otherwise,
1406 the default run target is returned. */
1408 extern struct target_ops
*find_attach_target (void);
1410 /* Find the correct target to use for "run". If a target on the
1411 current stack supports creating a new inferior, then it is
1412 returned. Otherwise, the default run target is returned. */
1414 extern struct target_ops
*find_run_target (void);
1416 /* Some targets don't generate traps when attaching to the inferior,
1417 or their target_attach implementation takes care of the waiting.
1418 These targets must set to_attach_no_wait. */
1420 extern bool target_attach_no_wait ();
1422 /* The target_attach operation places a process under debugger control,
1423 and stops the process.
1425 This operation provides a target-specific hook that allows the
1426 necessary bookkeeping to be performed after an attach completes. */
1428 extern void target_post_attach (int pid
);
1430 /* Display a message indicating we're about to detach from the current
1431 inferior process. */
1433 extern void target_announce_detach (int from_tty
);
1435 /* Takes a program previously attached to and detaches it.
1436 The program may resume execution (some targets do, some don't) and will
1437 no longer stop on signals, etc. We better not have left any breakpoints
1438 in the program or it'll die when it hits one. FROM_TTY says whether to be
1441 extern void target_detach (inferior
*inf
, int from_tty
);
1443 /* Disconnect from the current target without resuming it (leaving it
1444 waiting for a debugger). */
1446 extern void target_disconnect (const char *, int);
1448 /* Resume execution (or prepare for execution) of a target thread,
1449 process or all processes. STEP says whether to hardware
1450 single-step or to run free; SIGGNAL is the signal to be given to
1451 the target, or GDB_SIGNAL_0 for no signal. The caller may not pass
1452 GDB_SIGNAL_DEFAULT. A specific PTID means `step/resume only this
1453 process id'. A wildcard PTID (all threads, or all threads of
1454 process) means `step/resume INFERIOR_PTID, and let other threads
1455 (for which the wildcard PTID matches) resume with their
1456 'thread->suspend.stop_signal' signal (usually GDB_SIGNAL_0) if it
1457 is in "pass" state, or with no signal if in "no pass" state.
1459 In order to efficiently handle batches of resumption requests,
1460 targets may implement this method such that it records the
1461 resumption request, but defers the actual resumption to the
1462 target_commit_resume method implementation. See
1463 target_commit_resume below. */
1464 extern void target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
);
1466 /* Commit a series of resumption requests previously prepared with
1467 target_resume calls.
1469 GDB always calls target_commit_resume after calling target_resume
1470 one or more times. A target may thus use this method in
1471 coordination with the target_resume method to batch target-side
1472 resumption requests. In that case, the target doesn't actually
1473 resume in its target_resume implementation. Instead, it prepares
1474 the resumption in target_resume, and defers the actual resumption
1475 to target_commit_resume. E.g., the remote target uses this to
1476 coalesce multiple resumption requests in a single vCont packet. */
1477 extern void target_commit_resume ();
1479 /* Setup to defer target_commit_resume calls, and reactivate
1480 target_commit_resume on destruction, if it was previously
1482 extern scoped_restore_tmpl
<int> make_scoped_defer_target_commit_resume ();
1484 /* For target_read_memory see target/target.h. */
1486 /* The default target_ops::to_wait implementation. */
1488 extern ptid_t
default_target_wait (struct target_ops
*ops
,
1490 struct target_waitstatus
*status
,
1491 target_wait_flags options
);
1493 /* Fetch at least register REGNO, or all regs if regno == -1. No result. */
1495 extern void target_fetch_registers (struct regcache
*regcache
, int regno
);
1497 /* Store at least register REGNO, or all regs if REGNO == -1.
1498 It can store as many registers as it wants to, so target_prepare_to_store
1499 must have been previously called. Calls error() if there are problems. */
1501 extern void target_store_registers (struct regcache
*regcache
, int regs
);
1503 /* Get ready to modify the registers array. On machines which store
1504 individual registers, this doesn't need to do anything. On machines
1505 which store all the registers in one fell swoop, this makes sure
1506 that REGISTERS contains all the registers from the program being
1509 extern void target_prepare_to_store (regcache
*regcache
);
1511 /* Determine current address space of thread PTID. */
1513 struct address_space
*target_thread_address_space (ptid_t
);
1515 /* Implement the "info proc" command. This returns one if the request
1516 was handled, and zero otherwise. It can also throw an exception if
1517 an error was encountered while attempting to handle the
1520 int target_info_proc (const char *, enum info_proc_what
);
1522 /* Returns true if this target can disable address space randomization. */
1524 int target_supports_disable_randomization (void);
1526 /* Returns true if this target can enable and disable tracepoints
1527 while a trace experiment is running. */
1529 extern bool target_supports_enable_disable_tracepoint ();
1531 extern bool target_supports_string_tracing ();
1533 /* Returns true if this target can handle breakpoint conditions
1536 extern bool target_supports_evaluation_of_breakpoint_conditions ();
1538 /* Does this target support dumpcore API? */
1540 extern bool target_supports_dumpcore ();
1542 /* Generate the core file with target API. */
1544 extern void target_dumpcore (const char *filename
);
1546 /* Returns true if this target can handle breakpoint commands
1549 extern bool target_can_run_breakpoint_commands ();
1551 /* Read a string from target memory at address MEMADDR. The string
1552 will be at most LEN bytes long (note that excess bytes may be read
1553 in some cases -- but these will not be returned). Returns nullptr
1556 extern gdb::unique_xmalloc_ptr
<char> target_read_string
1557 (CORE_ADDR memaddr
, int len
, int *bytes_read
= nullptr);
1559 /* For target_read_memory see target/target.h. */
1561 extern int target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
1564 extern int target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
);
1566 extern int target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
);
1568 /* For target_write_memory see target/target.h. */
1570 extern int target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
,
1573 /* Fetches the target's memory map. If one is found it is sorted
1574 and returned, after some consistency checking. Otherwise, NULL
1576 std::vector
<mem_region
> target_memory_map (void);
1578 /* Erases all flash memory regions on the target. */
1579 void flash_erase_command (const char *cmd
, int from_tty
);
1581 /* Erase the specified flash region. */
1582 void target_flash_erase (ULONGEST address
, LONGEST length
);
1584 /* Finish a sequence of flash operations. */
1585 void target_flash_done (void);
1587 /* Describes a request for a memory write operation. */
1588 struct memory_write_request
1590 memory_write_request (ULONGEST begin_
, ULONGEST end_
,
1591 gdb_byte
*data_
= nullptr, void *baton_
= nullptr)
1592 : begin (begin_
), end (end_
), data (data_
), baton (baton_
)
1595 /* Begining address that must be written. */
1597 /* Past-the-end address. */
1599 /* The data to write. */
1601 /* A callback baton for progress reporting for this request. */
1605 /* Enumeration specifying different flash preservation behaviour. */
1606 enum flash_preserve_mode
1612 /* Write several memory blocks at once. This version can be more
1613 efficient than making several calls to target_write_memory, in
1614 particular because it can optimize accesses to flash memory.
1616 Moreover, this is currently the only memory access function in gdb
1617 that supports writing to flash memory, and it should be used for
1618 all cases where access to flash memory is desirable.
1620 REQUESTS is the vector of memory_write_request.
1621 PRESERVE_FLASH_P indicates what to do with blocks which must be
1622 erased, but not completely rewritten.
1623 PROGRESS_CB is a function that will be periodically called to provide
1624 feedback to user. It will be called with the baton corresponding
1625 to the request currently being written. It may also be called
1626 with a NULL baton, when preserved flash sectors are being rewritten.
1628 The function returns 0 on success, and error otherwise. */
1629 int target_write_memory_blocks
1630 (const std::vector
<memory_write_request
> &requests
,
1631 enum flash_preserve_mode preserve_flash_p
,
1632 void (*progress_cb
) (ULONGEST
, void *));
1634 /* Print a line about the current target. */
1636 extern void target_files_info ();
1638 /* Insert a breakpoint at address BP_TGT->placed_address in
1639 the target machine. Returns 0 for success, and returns non-zero or
1640 throws an error (with a detailed failure reason error code and
1641 message) otherwise. */
1643 extern int target_insert_breakpoint (struct gdbarch
*gdbarch
,
1644 struct bp_target_info
*bp_tgt
);
1646 /* Remove a breakpoint at address BP_TGT->placed_address in the target
1647 machine. Result is 0 for success, non-zero for error. */
1649 extern int target_remove_breakpoint (struct gdbarch
*gdbarch
,
1650 struct bp_target_info
*bp_tgt
,
1651 enum remove_bp_reason reason
);
1653 /* Return true if the target stack has a non-default
1654 "terminal_ours" method. */
1656 extern bool target_supports_terminal_ours (void);
1658 /* Kill the inferior process. Make it go away. */
1660 extern void target_kill (void);
1662 /* Load an executable file into the target process. This is expected
1663 to not only bring new code into the target process, but also to
1664 update GDB's symbol tables to match.
1666 ARG contains command-line arguments, to be broken down with
1667 buildargv (). The first non-switch argument is the filename to
1668 load, FILE; the second is a number (as parsed by strtoul (..., ...,
1669 0)), which is an offset to apply to the load addresses of FILE's
1670 sections. The target may define switches, or other non-switch
1671 arguments, as it pleases. */
1673 extern void target_load (const char *arg
, int from_tty
);
1675 /* Some targets (such as ttrace-based HPUX) don't allow us to request
1676 notification of inferior events such as fork and vork immediately
1677 after the inferior is created. (This because of how gdb gets an
1678 inferior created via invoking a shell to do it. In such a scenario,
1679 if the shell init file has commands in it, the shell will fork and
1680 exec for each of those commands, and we will see each such fork
1683 Such targets will supply an appropriate definition for this function. */
1685 extern void target_post_startup_inferior (ptid_t ptid
);
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 /* If the inferior forks or vforks, this function will be called at
1701 the next resume in order to perform any bookkeeping and fiddling
1702 necessary to continue debugging either the parent or child, as
1703 requested, and releasing the other. Information about the fork
1704 or vfork event is available via get_last_target_status ().
1705 This function returns true if the inferior should not be resumed
1706 (i.e. there is another event pending). */
1708 bool target_follow_fork (bool follow_child
, bool detach_fork
);
1710 /* Handle the target-specific bookkeeping required when the inferior
1711 makes an exec call. INF is the exec'd inferior. */
1713 void target_follow_exec (struct inferior
*inf
, const char *execd_pathname
);
1715 /* On some targets, we can catch an inferior exec event when it
1716 occurs. These functions insert/remove an already-created
1717 catchpoint for such events. They return 0 for success, 1 if the
1718 catchpoint type is not supported and -1 for failure. */
1720 extern int target_insert_exec_catchpoint (int pid
);
1722 extern int target_remove_exec_catchpoint (int pid
);
1726 NEEDED is true if any syscall catch (of any kind) is requested.
1727 If NEEDED is false, it means the target can disable the mechanism to
1728 catch system calls because there are no more catchpoints of this type.
1730 ANY_COUNT is nonzero if a generic (filter-less) syscall catch is
1731 being requested. In this case, SYSCALL_COUNTS should be ignored.
1733 SYSCALL_COUNTS is an array of ints, indexed by syscall number. An
1734 element in this array is nonzero if that syscall should be caught.
1735 This argument only matters if ANY_COUNT is zero.
1737 Return 0 for success, 1 if syscall catchpoints are not supported or -1
1740 extern int target_set_syscall_catchpoint
1741 (int pid
, bool needed
, int any_count
,
1742 gdb::array_view
<const int> syscall_counts
);
1744 /* The debugger has completed a blocking wait() call. There is now
1745 some process event that must be processed. This function should
1746 be defined by those targets that require the debugger to perform
1747 cleanup or internal state changes in response to the process event. */
1749 /* For target_mourn_inferior see target/target.h. */
1751 /* Does target have enough data to do a run or attach command? */
1753 extern int target_can_run ();
1755 /* Set list of signals to be handled in the target.
1757 PASS_SIGNALS is an array indexed by target signal number
1758 (enum gdb_signal). For every signal whose entry in this array is
1759 non-zero, the target is allowed -but not required- to skip reporting
1760 arrival of the signal to the GDB core by returning from target_wait,
1761 and to pass the signal directly to the inferior instead.
1763 However, if the target is hardware single-stepping a thread that is
1764 about to receive a signal, it needs to be reported in any case, even
1765 if mentioned in a previous target_pass_signals call. */
1767 extern void target_pass_signals
1768 (gdb::array_view
<const unsigned char> pass_signals
);
1770 /* Set list of signals the target may pass to the inferior. This
1771 directly maps to the "handle SIGNAL pass/nopass" setting.
1773 PROGRAM_SIGNALS is an array indexed by target signal
1774 number (enum gdb_signal). For every signal whose entry in this
1775 array is non-zero, the target is allowed to pass the signal to the
1776 inferior. Signals not present in the array shall be silently
1777 discarded. This does not influence whether to pass signals to the
1778 inferior as a result of a target_resume call. This is useful in
1779 scenarios where the target needs to decide whether to pass or not a
1780 signal to the inferior without GDB core involvement, such as for
1781 example, when detaching (as threads may have been suspended with
1782 pending signals not reported to GDB). */
1784 extern void target_program_signals
1785 (gdb::array_view
<const unsigned char> program_signals
);
1787 /* Check to see if a thread is still alive. */
1789 extern int target_thread_alive (ptid_t ptid
);
1791 /* Sync the target's threads with GDB's thread list. */
1793 extern void target_update_thread_list (void);
1795 /* Make target stop in a continuable fashion. (For instance, under
1796 Unix, this should act like SIGSTOP). Note that this function is
1797 asynchronous: it does not wait for the target to become stopped
1798 before returning. If this is the behavior you want please use
1799 target_stop_and_wait. */
1801 extern void target_stop (ptid_t ptid
);
1803 /* Interrupt the target. Unlike target_stop, this does not specify
1804 which thread/process reports the stop. For most target this acts
1805 like raising a SIGINT, though that's not absolutely required. This
1806 function is asynchronous. */
1808 extern void target_interrupt ();
1810 /* Pass a ^C, as determined to have been pressed by checking the quit
1811 flag, to the target, as if the user had typed the ^C on the
1812 inferior's controlling terminal while the inferior was in the
1813 foreground. Remote targets may take the opportunity to detect the
1814 remote side is not responding and offer to disconnect. */
1816 extern void target_pass_ctrlc (void);
1818 /* The default target_ops::to_pass_ctrlc implementation. Simply calls
1819 target_interrupt. */
1820 extern void default_target_pass_ctrlc (struct target_ops
*ops
);
1822 /* Send the specified COMMAND to the target's monitor
1823 (shell,interpreter) for execution. The result of the query is
1824 placed in OUTBUF. */
1826 extern void target_rcmd (const char *command
, struct ui_file
*outbuf
);
1828 /* Does the target include memory? (Dummy targets don't.) */
1830 extern int target_has_memory ();
1832 /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until
1833 we start a process.) */
1835 extern int target_has_stack ();
1837 /* Does the target have registers? (Exec files don't.) */
1839 extern int target_has_registers ();
1841 /* Does the target have execution? Can we make it jump (through
1842 hoops), or pop its stack a few times? This means that the current
1843 target is currently executing; for some targets, that's the same as
1844 whether or not the target is capable of execution, but there are
1845 also targets which can be current while not executing. In that
1846 case this will become true after to_create_inferior or
1847 to_attach. INF is the inferior to use; nullptr means to use the
1848 current inferior. */
1850 extern bool target_has_execution (inferior
*inf
= nullptr);
1852 /* Can the target support the debugger control of thread execution?
1853 Can it lock the thread scheduler? */
1855 extern bool target_can_lock_scheduler ();
1857 /* Controls whether async mode is permitted. */
1858 extern bool target_async_permitted
;
1860 /* Can the target support asynchronous execution? */
1861 extern bool target_can_async_p ();
1863 /* Is the target in asynchronous execution mode? */
1864 extern bool target_is_async_p ();
1866 /* Enables/disabled async target events. */
1867 extern void target_async (int enable
);
1869 /* Enables/disables thread create and exit events. */
1870 extern void target_thread_events (int enable
);
1872 /* Whether support for controlling the target backends always in
1873 non-stop mode is enabled. */
1874 extern enum auto_boolean target_non_stop_enabled
;
1876 /* Is the target in non-stop mode? Some targets control the inferior
1877 in non-stop mode even with "set non-stop off". Always true if "set
1879 extern bool target_is_non_stop_p ();
1881 /* Return true if at least one inferior has a non-stop target. */
1882 extern bool exists_non_stop_target ();
1884 extern exec_direction_kind
target_execution_direction ();
1886 /* Converts a process id to a string. Usually, the string just contains
1887 `process xyz', but on some systems it may contain
1888 `process xyz thread abc'. */
1890 extern std::string
target_pid_to_str (ptid_t ptid
);
1892 extern std::string
normal_pid_to_str (ptid_t ptid
);
1894 /* Return a short string describing extra information about PID,
1895 e.g. "sleeping", "runnable", "running on LWP 3". Null return value
1898 extern const char *target_extra_thread_info (thread_info
*tp
);
1900 /* Return the thread's name, or NULL if the target is unable to determine it.
1901 The returned value must not be freed by the caller. */
1903 extern const char *target_thread_name (struct thread_info
*);
1905 /* Given a pointer to a thread library specific thread handle and
1906 its length, return a pointer to the corresponding thread_info struct. */
1908 extern struct thread_info
*target_thread_handle_to_thread_info
1909 (const gdb_byte
*thread_handle
, int handle_len
, struct inferior
*inf
);
1911 /* Given a thread, return the thread handle, a target-specific sequence of
1912 bytes which serves as a thread identifier within the program being
1914 extern gdb::byte_vector target_thread_info_to_thread_handle
1915 (struct thread_info
*);
1917 /* Attempts to find the pathname of the executable file
1918 that was run to create a specified process.
1920 The process PID must be stopped when this operation is used.
1922 If the executable file cannot be determined, NULL is returned.
1924 Else, a pointer to a character string containing the pathname
1925 is returned. This string should be copied into a buffer by
1926 the client if the string will not be immediately used, or if
1929 extern char *target_pid_to_exec_file (int pid
);
1931 /* See the to_thread_architecture description in struct target_ops. */
1933 extern gdbarch
*target_thread_architecture (ptid_t ptid
);
1936 * Iterator function for target memory regions.
1937 * Calls a callback function once for each memory region 'mapped'
1938 * in the child process. Defined as a simple macro rather than
1939 * as a function macro so that it can be tested for nullity.
1942 extern int target_find_memory_regions (find_memory_region_ftype func
,
1946 * Compose corefile .note section.
1949 extern gdb::unique_xmalloc_ptr
<char> target_make_corefile_notes (bfd
*bfd
,
1952 /* Bookmark interfaces. */
1953 extern gdb_byte
*target_get_bookmark (const char *args
, int from_tty
);
1955 extern void target_goto_bookmark (const gdb_byte
*arg
, int from_tty
);
1957 /* Hardware watchpoint interfaces. */
1959 /* GDB's current model is that there are three "kinds" of watchpoints,
1960 with respect to when they trigger and how you can move past them.
1962 Those are: continuable, steppable, and non-steppable.
1964 Continuable watchpoints are like x86's -- those trigger after the
1965 memory access's side effects are fully committed to memory. I.e.,
1966 they trap with the PC pointing at the next instruction already.
1967 Continuing past such a watchpoint is doable by just normally
1968 continuing, hence the name.
1970 Both steppable and non-steppable watchpoints trap before the memory
1971 access. I.e, the PC points at the instruction that is accessing
1972 the memory. So GDB needs to single-step once past the current
1973 instruction in order to make the access effective and check whether
1974 the instruction's side effects change the watched expression.
1976 Now, in order to step past that instruction, depending on
1977 architecture and target, you can have two situations:
1979 - steppable watchpoints: you can single-step with the watchpoint
1980 still armed, and the watchpoint won't trigger again.
1982 - non-steppable watchpoints: if you try to single-step with the
1983 watchpoint still armed, you'd trap the watchpoint again and the
1984 thread wouldn't make any progress. So GDB needs to temporarily
1985 remove the watchpoint in order to step past it.
1987 If your target/architecture does not signal that it has either
1988 steppable or non-steppable watchpoints via either
1989 target_have_steppable_watchpoint or
1990 gdbarch_have_nonsteppable_watchpoint, GDB assumes continuable
1993 /* Returns true if we were stopped by a hardware watchpoint (memory read or
1994 write). Only the INFERIOR_PTID task is being queried. */
1996 extern bool target_stopped_by_watchpoint ();
1998 /* Returns true if the target stopped because it executed a
1999 software breakpoint instruction. */
2001 extern bool target_stopped_by_sw_breakpoint ();
2003 extern bool target_supports_stopped_by_sw_breakpoint ();
2005 extern bool target_stopped_by_hw_breakpoint ();
2007 extern bool target_supports_stopped_by_hw_breakpoint ();
2009 /* True if we have steppable watchpoints */
2011 extern bool target_have_steppable_watchpoint ();
2013 /* Provide defaults for hardware watchpoint functions. */
2015 /* If the *_hw_beakpoint functions have not been defined
2016 elsewhere use the definitions in the target vector. */
2018 /* Returns positive if we can set a hardware watchpoint of type TYPE.
2019 Returns negative if the target doesn't have enough hardware debug
2020 registers available. Return zero if hardware watchpoint of type
2021 TYPE isn't supported. TYPE is one of bp_hardware_watchpoint,
2022 bp_read_watchpoint, bp_write_watchpoint, or bp_hardware_breakpoint.
2023 CNT is the number of such watchpoints used so far, including this
2024 one. OTHERTYPE is the number of watchpoints of other types than
2025 this one used so far. */
2027 extern int target_can_use_hardware_watchpoint (bptype type
, int cnt
,
2030 /* Returns the number of debug registers needed to watch the given
2031 memory region, or zero if not supported. */
2033 extern int target_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
);
2035 extern int target_can_do_single_step ();
2037 /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes.
2038 TYPE is 0 for write, 1 for read, and 2 for read/write accesses.
2039 COND is the expression for its condition, or NULL if there's none.
2040 Returns 0 for success, 1 if the watchpoint type is not supported,
2043 extern int target_insert_watchpoint (CORE_ADDR addr
, int len
,
2044 target_hw_bp_type type
, expression
*cond
);
2046 extern int target_remove_watchpoint (CORE_ADDR addr
, int len
,
2047 target_hw_bp_type type
, expression
*cond
);
2049 /* Insert a new masked watchpoint at ADDR using the mask MASK.
2050 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
2051 or hw_access for an access watchpoint. Returns 0 for success, 1 if
2052 masked watchpoints are not supported, -1 for failure. */
2054 extern int target_insert_mask_watchpoint (CORE_ADDR
, CORE_ADDR
,
2055 enum target_hw_bp_type
);
2057 /* Remove a masked watchpoint at ADDR with the mask MASK.
2058 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
2059 or hw_access for an access watchpoint. Returns 0 for success, non-zero
2062 extern int target_remove_mask_watchpoint (CORE_ADDR
, CORE_ADDR
,
2063 enum target_hw_bp_type
);
2065 /* Insert a hardware breakpoint at address BP_TGT->placed_address in
2066 the target machine. Returns 0 for success, and returns non-zero or
2067 throws an error (with a detailed failure reason error code and
2068 message) otherwise. */
2070 extern int target_insert_hw_breakpoint (gdbarch
*gdbarch
,
2071 bp_target_info
*bp_tgt
);
2073 extern int target_remove_hw_breakpoint (gdbarch
*gdbarch
,
2074 bp_target_info
*bp_tgt
);
2076 /* Return number of debug registers needed for a ranged breakpoint,
2077 or -1 if ranged breakpoints are not supported. */
2079 extern int target_ranged_break_num_registers (void);
2081 /* Return non-zero if target knows the data address which triggered this
2082 target_stopped_by_watchpoint, in such case place it to *ADDR_P. Only the
2083 INFERIOR_PTID task is being queried. */
2084 #define target_stopped_data_address(target, addr_p) \
2085 (target)->stopped_data_address (addr_p)
2087 /* Return non-zero if ADDR is within the range of a watchpoint spanning
2088 LENGTH bytes beginning at START. */
2089 #define target_watchpoint_addr_within_range(target, addr, start, length) \
2090 (target)->watchpoint_addr_within_range (addr, start, length)
2092 /* Return non-zero if the target is capable of using hardware to evaluate
2093 the condition expression. In this case, if the condition is false when
2094 the watched memory location changes, execution may continue without the
2095 debugger being notified.
2097 Due to limitations in the hardware implementation, it may be capable of
2098 avoiding triggering the watchpoint in some cases where the condition
2099 expression is false, but may report some false positives as well.
2100 For this reason, GDB will still evaluate the condition expression when
2101 the watchpoint triggers. */
2103 extern bool target_can_accel_watchpoint_condition (CORE_ADDR addr
, int len
,
2104 int type
, expression
*cond
);
2106 /* Return number of debug registers needed for a masked watchpoint,
2107 -1 if masked watchpoints are not supported or -2 if the given address
2108 and mask combination cannot be used. */
2110 extern int target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
);
2112 /* Target can execute in reverse? */
2114 extern bool target_can_execute_reverse ();
2116 extern const struct target_desc
*target_read_description (struct target_ops
*);
2118 extern ptid_t
target_get_ada_task_ptid (long lwp
, long tid
);
2120 /* Main entry point for searching memory. */
2121 extern int target_search_memory (CORE_ADDR start_addr
,
2122 ULONGEST search_space_len
,
2123 const gdb_byte
*pattern
,
2124 ULONGEST pattern_len
,
2125 CORE_ADDR
*found_addrp
);
2127 /* Target file operations. */
2129 /* Return true if the filesystem seen by the current inferior
2130 is the local filesystem, zero otherwise. */
2132 extern bool target_filesystem_is_local ();
2134 /* Open FILENAME on the target, in the filesystem as seen by INF,
2135 using FLAGS and MODE. If INF is NULL, use the filesystem seen by
2136 the debugger (GDB or, for remote targets, the remote stub). Return
2137 a target file descriptor, or -1 if an error occurs (and set
2138 *TARGET_ERRNO). If WARN_IF_SLOW is true, print a warning message
2139 if the file is being accessed over a link that may be slow. */
2140 extern int target_fileio_open (struct inferior
*inf
,
2141 const char *filename
, int flags
,
2142 int mode
, bool warn_if_slow
,
2145 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
2146 Return the number of bytes written, or -1 if an error occurs
2147 (and set *TARGET_ERRNO). */
2148 extern int target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
2149 ULONGEST offset
, int *target_errno
);
2151 /* Read up to LEN bytes FD on the target into READ_BUF.
2152 Return the number of bytes read, or -1 if an error occurs
2153 (and set *TARGET_ERRNO). */
2154 extern int target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
2155 ULONGEST offset
, int *target_errno
);
2157 /* Get information about the file opened as FD on the target
2158 and put it in SB. Return 0 on success, or -1 if an error
2159 occurs (and set *TARGET_ERRNO). */
2160 extern int target_fileio_fstat (int fd
, struct stat
*sb
,
2163 /* Close FD on the target. Return 0, or -1 if an error occurs
2164 (and set *TARGET_ERRNO). */
2165 extern int target_fileio_close (int fd
, int *target_errno
);
2167 /* Unlink FILENAME on the target, in the filesystem as seen by INF.
2168 If INF is NULL, use the filesystem seen by the debugger (GDB or,
2169 for remote targets, the remote stub). Return 0, or -1 if an error
2170 occurs (and set *TARGET_ERRNO). */
2171 extern int target_fileio_unlink (struct inferior
*inf
,
2172 const char *filename
,
2175 /* Read value of symbolic link FILENAME on the target, in the
2176 filesystem as seen by INF. If INF is NULL, use the filesystem seen
2177 by the debugger (GDB or, for remote targets, the remote stub).
2178 Return a null-terminated string allocated via xmalloc, or NULL if
2179 an error occurs (and set *TARGET_ERRNO). */
2180 extern gdb::optional
<std::string
> target_fileio_readlink
2181 (struct inferior
*inf
, const char *filename
, int *target_errno
);
2183 /* Read target file FILENAME, in the filesystem as seen by INF. If
2184 INF is NULL, use the filesystem seen by the debugger (GDB or, for
2185 remote targets, the remote stub). The return value will be -1 if
2186 the transfer fails or is not supported; 0 if the object is empty;
2187 or the length of the object otherwise. If a positive value is
2188 returned, a sufficiently large buffer will be allocated using
2189 xmalloc and returned in *BUF_P containing the contents of the
2192 This method should be used for objects sufficiently small to store
2193 in a single xmalloc'd buffer, when no fixed bound on the object's
2194 size is known in advance. */
2195 extern LONGEST
target_fileio_read_alloc (struct inferior
*inf
,
2196 const char *filename
,
2199 /* Read target file FILENAME, in the filesystem as seen by INF. If
2200 INF is NULL, use the filesystem seen by the debugger (GDB or, for
2201 remote targets, the remote stub). The result is NUL-terminated and
2202 returned as a string, allocated using xmalloc. If an error occurs
2203 or the transfer is unsupported, NULL is returned. Empty objects
2204 are returned as allocated but empty strings. A warning is issued
2205 if the result contains any embedded NUL bytes. */
2206 extern gdb::unique_xmalloc_ptr
<char> target_fileio_read_stralloc
2207 (struct inferior
*inf
, const char *filename
);
2210 /* Tracepoint-related operations. */
2212 extern void target_trace_init ();
2214 extern void target_download_tracepoint (bp_location
*location
);
2216 extern bool target_can_download_tracepoint ();
2218 extern void target_download_trace_state_variable (const trace_state_variable
&tsv
);
2220 extern void target_enable_tracepoint (bp_location
*loc
);
2222 extern void target_disable_tracepoint (bp_location
*loc
);
2224 extern void target_trace_start ();
2226 extern void target_trace_set_readonly_regions ();
2228 extern int target_get_trace_status (trace_status
*ts
);
2230 extern void target_get_tracepoint_status (breakpoint
*tp
, uploaded_tp
*utp
);
2232 extern void target_trace_stop ();
2234 extern int target_trace_find (trace_find_type type
, int num
, CORE_ADDR addr1
,
2235 CORE_ADDR addr2
, int *tpp
);
2237 extern bool target_get_trace_state_variable_value (int tsv
, LONGEST
*val
);
2239 extern int target_save_trace_data (const char *filename
);
2241 extern int target_upload_tracepoints (uploaded_tp
**utpp
);
2243 extern int target_upload_trace_state_variables (uploaded_tsv
**utsvp
);
2245 extern LONGEST
target_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
,
2248 extern int target_get_min_fast_tracepoint_insn_len ();
2250 extern void target_set_disconnected_tracing (int val
);
2252 extern void target_set_circular_trace_buffer (int val
);
2254 extern void target_set_trace_buffer_size (LONGEST val
);
2256 extern bool target_set_trace_notes (const char *user
, const char *notes
,
2257 const char *stopnotes
);
2259 extern bool target_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
);
2261 extern void target_set_permissions ();
2263 extern bool target_static_tracepoint_marker_at
2264 (CORE_ADDR addr
, static_tracepoint_marker
*marker
);
2266 extern std::vector
<static_tracepoint_marker
>
2267 target_static_tracepoint_markers_by_strid (const char *marker_id
);
2269 extern traceframe_info_up
target_traceframe_info ();
2271 extern bool target_use_agent (bool use
);
2273 extern bool target_can_use_agent ();
2275 extern bool target_augmented_libraries_svr4_read ();
2277 extern bool target_supports_memory_tagging ();
2279 extern bool target_fetch_memtags (CORE_ADDR address
, size_t len
,
2280 gdb::byte_vector
&tags
, int type
);
2282 extern bool target_store_memtags (CORE_ADDR address
, size_t len
,
2283 const gdb::byte_vector
&tags
, int type
);
2285 /* Command logging facility. */
2287 extern void target_log_command (const char *p
);
2289 extern int target_core_of_thread (ptid_t ptid
);
2291 /* See to_get_unwinder in struct target_ops. */
2292 extern const struct frame_unwind
*target_get_unwinder (void);
2294 /* See to_get_tailcall_unwinder in struct target_ops. */
2295 extern const struct frame_unwind
*target_get_tailcall_unwinder (void);
2297 /* This implements basic memory verification, reading target memory
2298 and performing the comparison here (as opposed to accelerated
2299 verification making use of the qCRC packet, for example). */
2301 extern int simple_verify_memory (struct target_ops
* ops
,
2302 const gdb_byte
*data
,
2303 CORE_ADDR memaddr
, ULONGEST size
);
2305 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range matches
2306 the contents of [DATA,DATA+SIZE). Returns 1 if there's a match, 0
2307 if there's a mismatch, and -1 if an error is encountered while
2308 reading memory. Throws an error if the functionality is found not
2309 to be supported by the current target. */
2310 int target_verify_memory (const gdb_byte
*data
,
2311 CORE_ADDR memaddr
, ULONGEST size
);
2313 /* Routines for maintenance of the target structures...
2315 add_target: Add a target to the list of all possible targets.
2316 This only makes sense for targets that should be activated using
2317 the "target TARGET_NAME ..." command.
2319 push_target: Make this target the top of the stack of currently used
2320 targets, within its particular stratum of the stack. Result
2321 is 0 if now atop the stack, nonzero if not on top (maybe
2324 unpush_target: Remove this from the stack of currently used targets,
2325 no matter where it is on the list. Returns 0 if no
2326 change, 1 if removed from stack. */
2328 /* Type of callback called when the user activates a target with
2329 "target TARGET_NAME". The callback routine takes the rest of the
2330 parameters from the command, and (if successful) pushes a new
2331 target onto the stack. */
2332 typedef void target_open_ftype (const char *args
, int from_tty
);
2334 /* Add the target described by INFO to the list of possible targets
2335 and add a new command 'target $(INFO->shortname)'. Set COMPLETER
2336 as the command's completer if not NULL. */
2338 extern void add_target (const target_info
&info
,
2339 target_open_ftype
*func
,
2340 completer_ftype
*completer
= NULL
);
2342 /* Adds a command ALIAS for the target described by INFO and marks it
2343 deprecated. This is useful for maintaining backwards compatibility
2344 when renaming targets. */
2346 extern void add_deprecated_target_alias (const target_info
&info
,
2349 /* A unique_ptr helper to unpush a target. */
2351 struct target_unpusher
2353 void operator() (struct target_ops
*ops
) const;
2356 /* A unique_ptr that unpushes a target on destruction. */
2358 typedef std::unique_ptr
<struct target_ops
, target_unpusher
> target_unpush_up
;
2360 extern void target_pre_inferior (int);
2362 extern void target_preopen (int);
2364 /* Does whatever cleanup is required to get rid of all pushed targets. */
2365 extern void pop_all_targets (void);
2367 /* Like pop_all_targets, but pops only targets whose stratum is at or
2369 extern void pop_all_targets_at_and_above (enum strata stratum
);
2371 /* Like pop_all_targets, but pops only targets whose stratum is
2372 strictly above ABOVE_STRATUM. */
2373 extern void pop_all_targets_above (enum strata above_stratum
);
2375 extern CORE_ADDR
target_translate_tls_address (struct objfile
*objfile
,
2378 /* Return the "section" containing the specified address. */
2379 const struct target_section
*target_section_by_addr (struct target_ops
*target
,
2382 /* Return the target section table this target (or the targets
2383 beneath) currently manipulate. */
2385 extern const target_section_table
*target_get_section_table
2386 (struct target_ops
*target
);
2388 /* Default implementation of get_section_table for dummy_target. */
2390 extern const target_section_table
*default_get_section_table ();
2392 /* From mem-break.c */
2394 extern int memory_remove_breakpoint (struct target_ops
*,
2395 struct gdbarch
*, struct bp_target_info
*,
2396 enum remove_bp_reason
);
2398 extern int memory_insert_breakpoint (struct target_ops
*,
2399 struct gdbarch
*, struct bp_target_info
*);
2401 /* Convenience template use to add memory breakpoints support to a
2404 template <typename BaseTarget
>
2405 struct memory_breakpoint_target
: public BaseTarget
2407 int insert_breakpoint (struct gdbarch
*gdbarch
,
2408 struct bp_target_info
*bp_tgt
) override
2409 { return memory_insert_breakpoint (this, gdbarch
, bp_tgt
); }
2411 int remove_breakpoint (struct gdbarch
*gdbarch
,
2412 struct bp_target_info
*bp_tgt
,
2413 enum remove_bp_reason reason
) override
2414 { return memory_remove_breakpoint (this, gdbarch
, bp_tgt
, reason
); }
2417 /* Check whether the memory at the breakpoint's placed address still
2418 contains the expected breakpoint instruction. */
2420 extern int memory_validate_breakpoint (struct gdbarch
*gdbarch
,
2421 struct bp_target_info
*bp_tgt
);
2423 extern int default_memory_remove_breakpoint (struct gdbarch
*,
2424 struct bp_target_info
*);
2426 extern int default_memory_insert_breakpoint (struct gdbarch
*,
2427 struct bp_target_info
*);
2432 extern void initialize_targets (void);
2434 extern void noprocess (void) ATTRIBUTE_NORETURN
;
2436 extern void target_require_runnable (void);
2438 /* Find the target at STRATUM. If no target is at that stratum,
2441 struct target_ops
*find_target_at (enum strata stratum
);
2443 /* Read OS data object of type TYPE from the target, and return it in XML
2444 format. The return value follows the same rules as target_read_stralloc. */
2446 extern gdb::optional
<gdb::char_vector
> target_get_osdata (const char *type
);
2448 /* Stuff that should be shared among the various remote targets. */
2451 /* Timeout limit for response from target. */
2452 extern int remote_timeout
;
2456 /* Set the show memory breakpoints mode to show, and return a
2457 scoped_restore to restore it back to the current value. */
2458 extern scoped_restore_tmpl
<int>
2459 make_scoped_restore_show_memory_breakpoints (int show
);
2461 extern bool may_write_registers
;
2462 extern bool may_write_memory
;
2463 extern bool may_insert_breakpoints
;
2464 extern bool may_insert_tracepoints
;
2465 extern bool may_insert_fast_tracepoints
;
2466 extern bool may_stop
;
2468 extern void update_target_permissions (void);
2471 /* Imported from machine dependent code. */
2473 /* See to_enable_btrace in struct target_ops. */
2474 extern struct btrace_target_info
*
2475 target_enable_btrace (ptid_t ptid
, const struct btrace_config
*);
2477 /* See to_disable_btrace in struct target_ops. */
2478 extern void target_disable_btrace (struct btrace_target_info
*btinfo
);
2480 /* See to_teardown_btrace in struct target_ops. */
2481 extern void target_teardown_btrace (struct btrace_target_info
*btinfo
);
2483 /* See to_read_btrace in struct target_ops. */
2484 extern enum btrace_error
target_read_btrace (struct btrace_data
*,
2485 struct btrace_target_info
*,
2486 enum btrace_read_type
);
2488 /* See to_btrace_conf in struct target_ops. */
2489 extern const struct btrace_config
*
2490 target_btrace_conf (const struct btrace_target_info
*);
2492 /* See to_stop_recording in struct target_ops. */
2493 extern void target_stop_recording (void);
2495 /* See to_save_record in struct target_ops. */
2496 extern void target_save_record (const char *filename
);
2498 /* Query if the target supports deleting the execution log. */
2499 extern int target_supports_delete_record (void);
2501 /* See to_delete_record in struct target_ops. */
2502 extern void target_delete_record (void);
2504 /* See to_record_method. */
2505 extern enum record_method
target_record_method (ptid_t ptid
);
2507 /* See to_record_is_replaying in struct target_ops. */
2508 extern int target_record_is_replaying (ptid_t ptid
);
2510 /* See to_record_will_replay in struct target_ops. */
2511 extern int target_record_will_replay (ptid_t ptid
, int dir
);
2513 /* See to_record_stop_replaying in struct target_ops. */
2514 extern void target_record_stop_replaying (void);
2516 /* See to_goto_record_begin in struct target_ops. */
2517 extern void target_goto_record_begin (void);
2519 /* See to_goto_record_end in struct target_ops. */
2520 extern void target_goto_record_end (void);
2522 /* See to_goto_record in struct target_ops. */
2523 extern void target_goto_record (ULONGEST insn
);
2525 /* See to_insn_history. */
2526 extern void target_insn_history (int size
, gdb_disassembly_flags flags
);
2528 /* See to_insn_history_from. */
2529 extern void target_insn_history_from (ULONGEST from
, int size
,
2530 gdb_disassembly_flags flags
);
2532 /* See to_insn_history_range. */
2533 extern void target_insn_history_range (ULONGEST begin
, ULONGEST end
,
2534 gdb_disassembly_flags flags
);
2536 /* See to_call_history. */
2537 extern void target_call_history (int size
, record_print_flags flags
);
2539 /* See to_call_history_from. */
2540 extern void target_call_history_from (ULONGEST begin
, int size
,
2541 record_print_flags flags
);
2543 /* See to_call_history_range. */
2544 extern void target_call_history_range (ULONGEST begin
, ULONGEST end
,
2545 record_print_flags flags
);
2547 /* See to_prepare_to_generate_core. */
2548 extern void target_prepare_to_generate_core (void);
2550 /* See to_done_generating_core. */
2551 extern void target_done_generating_core (void);
2553 #endif /* !defined (TARGET_H) */