1 /* Interface between GDB and target environments, including files and processes
3 Copyright (C) 1990-2020 Free Software Foundation, Inc.
5 Contributed by Cygnus Support. Written by John Gilmore.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #if !defined (TARGET_H)
30 struct bp_target_info
;
32 struct target_section_table
;
33 struct trace_state_variable
;
37 struct static_tracepoint_marker
;
38 struct traceframe_info
;
43 #include "infrun.h" /* For enum exec_direction_kind. */
44 #include "breakpoint.h" /* For enum bptype. */
45 #include "gdbsupport/scoped_restore.h"
46 #include "gdbsupport/refcounted-object.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"
84 #include "displaced-stepping.h"
86 #include "gdbsupport/break-common.h" /* For enum target_hw_bp_type. */
90 dummy_stratum
, /* The lowest of the low */
91 file_stratum
, /* Executable files, etc */
92 process_stratum
, /* Executing processes or core dump files */
93 thread_stratum
, /* Executing threads */
94 record_stratum
, /* Support record debugging */
95 arch_stratum
, /* Architecture overrides */
96 debug_stratum
/* Target debug. Must be last. */
99 enum thread_control_capabilities
101 tc_none
= 0, /* Default: can't control thread execution. */
102 tc_schedlock
= 1, /* Can lock the thread scheduler. */
105 /* The structure below stores information about a system call.
106 It is basically used in the "catch syscall" command, and in
107 every function that gives information about a system call.
109 It's also good to mention that its fields represent everything
110 that we currently know about a syscall in GDB. */
113 /* The syscall number. */
116 /* The syscall name. */
120 /* Return a pretty printed form of TARGET_OPTIONS. */
121 extern std::string
target_options_to_string (int target_options
);
123 /* Possible types of events that the inferior handler will have to
125 enum inferior_event_type
127 /* Process a normal inferior event which will result in target_wait
130 /* We are called to do stuff after the inferior stops. */
134 /* Target objects which can be transfered using target_read,
135 target_write, et cetera. */
139 /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */
141 /* Transfer up-to LEN bytes of memory starting at OFFSET. */
142 TARGET_OBJECT_MEMORY
,
143 /* Memory, avoiding GDB's data cache and trusting the executable.
144 Target implementations of to_xfer_partial never need to handle
145 this object, and most callers should not use it. */
146 TARGET_OBJECT_RAW_MEMORY
,
147 /* Memory known to be part of the target's stack. This is cached even
148 if it is not in a region marked as such, since it is known to be
150 TARGET_OBJECT_STACK_MEMORY
,
151 /* Memory known to be part of the target code. This is cached even
152 if it is not in a region marked as such. */
153 TARGET_OBJECT_CODE_MEMORY
,
154 /* Kernel Unwind Table. See "ia64-tdep.c". */
155 TARGET_OBJECT_UNWIND_TABLE
,
156 /* Transfer auxilliary vector. */
158 /* StackGhost cookie. See "sparc-tdep.c". */
159 TARGET_OBJECT_WCOOKIE
,
160 /* Target memory map in XML format. */
161 TARGET_OBJECT_MEMORY_MAP
,
162 /* Flash memory. This object can be used to write contents to
163 a previously erased flash memory. Using it without erasing
164 flash can have unexpected results. Addresses are physical
165 address on target, and not relative to flash start. */
167 /* Available target-specific features, e.g. registers and coprocessors.
168 See "target-descriptions.c". ANNEX should never be empty. */
169 TARGET_OBJECT_AVAILABLE_FEATURES
,
170 /* Currently loaded libraries, in XML format. */
171 TARGET_OBJECT_LIBRARIES
,
172 /* Currently loaded libraries specific for SVR4 systems, in XML format. */
173 TARGET_OBJECT_LIBRARIES_SVR4
,
174 /* Currently loaded libraries specific to AIX systems, in XML format. */
175 TARGET_OBJECT_LIBRARIES_AIX
,
176 /* Get OS specific data. The ANNEX specifies the type (running
177 processes, etc.). The data being transfered is expected to follow
178 the DTD specified in features/osdata.dtd. */
179 TARGET_OBJECT_OSDATA
,
180 /* Extra signal info. Usually the contents of `siginfo_t' on unix
182 TARGET_OBJECT_SIGNAL_INFO
,
183 /* The list of threads that are being debugged. */
184 TARGET_OBJECT_THREADS
,
185 /* Collected static trace data. */
186 TARGET_OBJECT_STATIC_TRACE_DATA
,
187 /* Traceframe info, in XML format. */
188 TARGET_OBJECT_TRACEFRAME_INFO
,
189 /* Load maps for FDPIC systems. */
191 /* Darwin dynamic linker info data. */
192 TARGET_OBJECT_DARWIN_DYLD_INFO
,
193 /* OpenVMS Unwind Information Block. */
194 TARGET_OBJECT_OPENVMS_UIB
,
195 /* Branch trace data, in XML format. */
196 TARGET_OBJECT_BTRACE
,
197 /* Branch trace configuration, in XML format. */
198 TARGET_OBJECT_BTRACE_CONF
,
199 /* The pathname of the executable file that was run to create
200 a specified process. ANNEX should be a string representation
201 of the process ID of the process in question, in hexadecimal
203 TARGET_OBJECT_EXEC_FILE
,
204 /* FreeBSD virtual memory mappings. */
205 TARGET_OBJECT_FREEBSD_VMMAP
,
206 /* FreeBSD process strings. */
207 TARGET_OBJECT_FREEBSD_PS_STRINGS
,
208 /* Possible future objects: TARGET_OBJECT_FILE, ... */
211 /* Possible values returned by target_xfer_partial, etc. */
213 enum target_xfer_status
215 /* Some bytes are transferred. */
218 /* No further transfer is possible. */
221 /* The piece of the object requested is unavailable. */
222 TARGET_XFER_UNAVAILABLE
= 2,
224 /* Generic I/O error. Note that it's important that this is '-1',
225 as we still have target_xfer-related code returning hardcoded
227 TARGET_XFER_E_IO
= -1,
229 /* Keep list in sync with target_xfer_status_to_string. */
232 /* Return the string form of STATUS. */
235 target_xfer_status_to_string (enum target_xfer_status status
);
237 typedef enum target_xfer_status
238 target_xfer_partial_ftype (struct target_ops
*ops
,
239 enum target_object object
,
242 const gdb_byte
*writebuf
,
245 ULONGEST
*xfered_len
);
247 enum target_xfer_status
248 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
249 const gdb_byte
*writebuf
, ULONGEST memaddr
,
250 LONGEST len
, ULONGEST
*xfered_len
);
252 /* Request that OPS transfer up to LEN addressable units of the target's
253 OBJECT. When reading from a memory object, the size of an addressable unit
254 is architecture dependent and can be found using
255 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is 1
256 byte long. BUF should point to a buffer large enough to hold the read data,
257 taking into account the addressable unit size. The OFFSET, for a seekable
258 object, specifies the starting point. The ANNEX can be used to provide
259 additional data-specific information to the target.
261 Return the number of addressable units actually transferred, or a negative
262 error code (an 'enum target_xfer_error' value) if the transfer is not
263 supported or otherwise fails. Return of a positive value less than
264 LEN indicates that no further transfer is possible. Unlike the raw
265 to_xfer_partial interface, callers of these functions do not need
266 to retry partial transfers. */
268 extern LONGEST
target_read (struct target_ops
*ops
,
269 enum target_object object
,
270 const char *annex
, gdb_byte
*buf
,
271 ULONGEST offset
, LONGEST len
);
273 struct memory_read_result
275 memory_read_result (ULONGEST begin_
, ULONGEST end_
,
276 gdb::unique_xmalloc_ptr
<gdb_byte
> &&data_
)
279 data (std::move (data_
))
283 ~memory_read_result () = default;
285 memory_read_result (memory_read_result
&&other
) = default;
287 DISABLE_COPY_AND_ASSIGN (memory_read_result
);
289 /* First address that was read. */
291 /* Past-the-end address. */
294 gdb::unique_xmalloc_ptr
<gdb_byte
> data
;
297 extern std::vector
<memory_read_result
> read_memory_robust
298 (struct target_ops
*ops
, const ULONGEST offset
, const LONGEST len
);
300 /* Request that OPS transfer up to LEN addressable units from BUF to the
301 target's OBJECT. When writing to a memory object, the addressable unit
302 size is architecture dependent and can be found using
303 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is 1
304 byte long. The OFFSET, for a seekable object, specifies the starting point.
305 The ANNEX can be used to provide additional data-specific information to
308 Return the number of addressable units actually transferred, or a negative
309 error code (an 'enum target_xfer_status' value) if the transfer is not
310 supported or otherwise fails. Return of a positive value less than
311 LEN indicates that no further transfer is possible. Unlike the raw
312 to_xfer_partial interface, callers of these functions do not need to
313 retry partial transfers. */
315 extern LONGEST
target_write (struct target_ops
*ops
,
316 enum target_object object
,
317 const char *annex
, const gdb_byte
*buf
,
318 ULONGEST offset
, LONGEST len
);
320 /* Similar to target_write, except that it also calls PROGRESS with
321 the number of bytes written and the opaque BATON after every
322 successful partial write (and before the first write). This is
323 useful for progress reporting and user interaction while writing
324 data. To abort the transfer, the progress callback can throw an
327 LONGEST
target_write_with_progress (struct target_ops
*ops
,
328 enum target_object object
,
329 const char *annex
, const gdb_byte
*buf
,
330 ULONGEST offset
, LONGEST len
,
331 void (*progress
) (ULONGEST
, void *),
334 /* Wrapper to perform a full read of unknown size. OBJECT/ANNEX will be read
335 using OPS. The return value will be uninstantiated if the transfer fails or
338 This method should be used for objects sufficiently small to store
339 in a single xmalloc'd buffer, when no fixed bound on the object's
340 size is known in advance. Don't try to read TARGET_OBJECT_MEMORY
341 through this function. */
343 extern gdb::optional
<gdb::byte_vector
> target_read_alloc
344 (struct target_ops
*ops
, enum target_object object
, const char *annex
);
346 /* Read OBJECT/ANNEX using OPS. The result is a NUL-terminated character vector
347 (therefore usable as a NUL-terminated string). If an error occurs or the
348 transfer is unsupported, the return value will be uninstantiated. Empty
349 objects are returned as allocated but empty strings. Therefore, on success,
350 the returned vector is guaranteed to have at least one element. A warning is
351 issued if the result contains any embedded NUL bytes. */
353 extern gdb::optional
<gdb::char_vector
> target_read_stralloc
354 (struct target_ops
*ops
, enum target_object object
, const char *annex
);
356 /* See target_ops->to_xfer_partial. */
357 extern target_xfer_partial_ftype target_xfer_partial
;
359 /* Wrappers to target read/write that perform memory transfers. They
360 throw an error if the memory transfer fails.
362 NOTE: cagney/2003-10-23: The naming schema is lifted from
363 "frame.h". The parameter order is lifted from get_frame_memory,
364 which in turn lifted it from read_memory. */
366 extern void get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
,
367 gdb_byte
*buf
, LONGEST len
);
368 extern ULONGEST
get_target_memory_unsigned (struct target_ops
*ops
,
369 CORE_ADDR addr
, int len
,
370 enum bfd_endian byte_order
);
372 struct thread_info
; /* fwd decl for parameter list below: */
374 /* The type of the callback to the to_async method. */
376 typedef void async_callback_ftype (enum inferior_event_type event_type
,
379 /* Normally target debug printing is purely type-based. However,
380 sometimes it is necessary to override the debug printing on a
381 per-argument basis. This macro can be used, attribute-style, to
382 name the target debug printing function for a particular method
383 argument. FUNC is the name of the function. The macro's
384 definition is empty because it is only used by the
385 make-target-delegates script. */
387 #define TARGET_DEBUG_PRINTER(FUNC)
389 /* These defines are used to mark target_ops methods. The script
390 make-target-delegates scans these and auto-generates the base
391 method implementations. There are four macros that can be used:
393 1. TARGET_DEFAULT_IGNORE. There is no argument. The base method
394 does nothing. This is only valid if the method return type is
397 2. TARGET_DEFAULT_NORETURN. The argument is a function call, like
398 'tcomplain ()'. The base method simply makes this call, which is
399 assumed not to return.
401 3. TARGET_DEFAULT_RETURN. The argument is a C expression. The
402 base method returns this expression's value.
404 4. TARGET_DEFAULT_FUNC. The argument is the name of a function.
405 make-target-delegates does not generate a base method in this case,
406 but instead uses the argument function as the base method. */
408 #define TARGET_DEFAULT_IGNORE()
409 #define TARGET_DEFAULT_NORETURN(ARG)
410 #define TARGET_DEFAULT_RETURN(ARG)
411 #define TARGET_DEFAULT_FUNC(ARG)
413 /* Each target that can be activated with "target TARGET_NAME" passes
414 the address of one of these objects to add_target, which uses the
415 object's address as unique identifier, and registers the "target
416 TARGET_NAME" command using SHORTNAME as target name. */
420 /* Name of this target. */
421 const char *shortname
;
423 /* Name for printing. */
424 const char *longname
;
426 /* Documentation. Does not include trailing newline, and starts
427 with a one-line description (probably similar to longname). */
432 : public refcounted_object
434 /* Return this target's stratum. */
435 virtual strata
stratum () const = 0;
437 /* To the target under this one. */
438 target_ops
*beneath () const;
440 /* Free resources associated with the target. Note that singleton
441 targets, like e.g., native targets, are global objects, not
442 heap allocated, and are thus only deleted on GDB exit. The
443 main teardown entry point is the "close" method, below. */
444 virtual ~target_ops () {}
446 /* Return a reference to this target's unique target_info
448 virtual const target_info
&info () const = 0;
450 /* Name this target type. */
451 const char *shortname () const
452 { return info ().shortname
; }
454 const char *longname () const
455 { return info ().longname
; }
457 /* Close the target. This is where the target can handle
458 teardown. Heap-allocated targets should delete themselves
460 virtual void close ();
462 /* Attaches to a process on the target side. Arguments are as
463 passed to the `attach' command by the user. This routine can
464 be called when the target is not on the target-stack, if the
465 target_ops::can_run method returns 1; in that case, it must push
466 itself onto the stack. Upon exit, the target should be ready
467 for normal operations, and should be ready to deliver the
468 status of the process immediately (without waiting) to an
469 upcoming target_wait call. */
470 virtual bool can_attach ();
471 virtual void attach (const char *, int);
472 virtual void post_attach (int)
473 TARGET_DEFAULT_IGNORE ();
474 virtual void detach (inferior
*, int)
475 TARGET_DEFAULT_IGNORE ();
476 virtual void disconnect (const char *, int)
477 TARGET_DEFAULT_NORETURN (tcomplain ());
478 virtual void resume (ptid_t
,
479 int TARGET_DEBUG_PRINTER (target_debug_print_step
),
481 TARGET_DEFAULT_NORETURN (noprocess ());
482 virtual void commit_resume ()
483 TARGET_DEFAULT_IGNORE ();
484 /* See target_wait's description. Note that implementations of
485 this method must not assume that inferior_ptid on entry is
486 pointing at the thread or inferior that ends up reporting an
487 event. The reported event could be for some other thread in
488 the current inferior or even for a different process of the
489 current target. inferior_ptid may also be null_ptid on
491 virtual ptid_t
wait (ptid_t
, struct target_waitstatus
*,
492 int TARGET_DEBUG_PRINTER (target_debug_print_options
))
493 TARGET_DEFAULT_FUNC (default_target_wait
);
494 virtual void fetch_registers (struct regcache
*, int)
495 TARGET_DEFAULT_IGNORE ();
496 virtual void store_registers (struct regcache
*, int)
497 TARGET_DEFAULT_NORETURN (noprocess ());
498 virtual void prepare_to_store (struct regcache
*)
499 TARGET_DEFAULT_NORETURN (noprocess ());
501 virtual void files_info ()
502 TARGET_DEFAULT_IGNORE ();
503 virtual int insert_breakpoint (struct gdbarch
*,
504 struct bp_target_info
*)
505 TARGET_DEFAULT_NORETURN (noprocess ());
506 virtual int remove_breakpoint (struct gdbarch
*,
507 struct bp_target_info
*,
508 enum remove_bp_reason
)
509 TARGET_DEFAULT_NORETURN (noprocess ());
511 /* Returns true if the target stopped because it executed a
512 software breakpoint. This is necessary for correct background
513 execution / non-stop mode operation, and for correct PC
514 adjustment on targets where the PC needs to be adjusted when a
515 software breakpoint triggers. In these modes, by the time GDB
516 processes a breakpoint event, the breakpoint may already be
517 done from the target, so GDB needs to be able to tell whether
518 it should ignore the event and whether it should adjust the PC.
519 See adjust_pc_after_break. */
520 virtual bool stopped_by_sw_breakpoint ()
521 TARGET_DEFAULT_RETURN (false);
522 /* Returns true if the above method is supported. */
523 virtual bool supports_stopped_by_sw_breakpoint ()
524 TARGET_DEFAULT_RETURN (false);
526 /* Returns true if the target stopped for a hardware breakpoint.
527 Likewise, if the target supports hardware breakpoints, this
528 method is necessary for correct background execution / non-stop
529 mode operation. Even though hardware breakpoints do not
530 require PC adjustment, GDB needs to be able to tell whether the
531 hardware breakpoint event is a delayed event for a breakpoint
532 that is already gone and should thus be ignored. */
533 virtual bool stopped_by_hw_breakpoint ()
534 TARGET_DEFAULT_RETURN (false);
535 /* Returns true if the above method is supported. */
536 virtual bool supports_stopped_by_hw_breakpoint ()
537 TARGET_DEFAULT_RETURN (false);
539 virtual int can_use_hw_breakpoint (enum bptype
, int, int)
540 TARGET_DEFAULT_RETURN (0);
541 virtual int ranged_break_num_registers ()
542 TARGET_DEFAULT_RETURN (-1);
543 virtual int insert_hw_breakpoint (struct gdbarch
*,
544 struct bp_target_info
*)
545 TARGET_DEFAULT_RETURN (-1);
546 virtual int remove_hw_breakpoint (struct gdbarch
*,
547 struct bp_target_info
*)
548 TARGET_DEFAULT_RETURN (-1);
550 /* Documentation of what the two routines below are expected to do is
551 provided with the corresponding target_* macros. */
552 virtual int remove_watchpoint (CORE_ADDR
, int,
553 enum target_hw_bp_type
, struct expression
*)
554 TARGET_DEFAULT_RETURN (-1);
555 virtual int insert_watchpoint (CORE_ADDR
, int,
556 enum target_hw_bp_type
, struct expression
*)
557 TARGET_DEFAULT_RETURN (-1);
559 virtual int insert_mask_watchpoint (CORE_ADDR
, CORE_ADDR
,
560 enum target_hw_bp_type
)
561 TARGET_DEFAULT_RETURN (1);
562 virtual int remove_mask_watchpoint (CORE_ADDR
, CORE_ADDR
,
563 enum target_hw_bp_type
)
564 TARGET_DEFAULT_RETURN (1);
565 virtual bool stopped_by_watchpoint ()
566 TARGET_DEFAULT_RETURN (false);
567 virtual bool have_steppable_watchpoint ()
568 TARGET_DEFAULT_RETURN (false);
569 virtual bool stopped_data_address (CORE_ADDR
*)
570 TARGET_DEFAULT_RETURN (false);
571 virtual bool watchpoint_addr_within_range (CORE_ADDR
, CORE_ADDR
, int)
572 TARGET_DEFAULT_FUNC (default_watchpoint_addr_within_range
);
574 /* Documentation of this routine is provided with the corresponding
576 virtual int region_ok_for_hw_watchpoint (CORE_ADDR
, int)
577 TARGET_DEFAULT_FUNC (default_region_ok_for_hw_watchpoint
);
579 virtual bool can_accel_watchpoint_condition (CORE_ADDR
, int, int,
581 TARGET_DEFAULT_RETURN (false);
582 virtual int masked_watch_num_registers (CORE_ADDR
, CORE_ADDR
)
583 TARGET_DEFAULT_RETURN (-1);
585 /* Return 1 for sure target can do single step. Return -1 for
586 unknown. Return 0 for target can't do. */
587 virtual int can_do_single_step ()
588 TARGET_DEFAULT_RETURN (-1);
590 virtual bool supports_terminal_ours ()
591 TARGET_DEFAULT_RETURN (false);
592 virtual void terminal_init ()
593 TARGET_DEFAULT_IGNORE ();
594 virtual void terminal_inferior ()
595 TARGET_DEFAULT_IGNORE ();
596 virtual void terminal_save_inferior ()
597 TARGET_DEFAULT_IGNORE ();
598 virtual void terminal_ours_for_output ()
599 TARGET_DEFAULT_IGNORE ();
600 virtual void terminal_ours ()
601 TARGET_DEFAULT_IGNORE ();
602 virtual void terminal_info (const char *, int)
603 TARGET_DEFAULT_FUNC (default_terminal_info
);
605 TARGET_DEFAULT_NORETURN (noprocess ());
606 virtual void load (const char *, int)
607 TARGET_DEFAULT_NORETURN (tcomplain ());
608 /* Start an inferior process and set inferior_ptid to its pid.
609 EXEC_FILE is the file to run.
610 ALLARGS is a string containing the arguments to the program.
611 ENV is the environment vector to pass. Errors reported with error().
612 On VxWorks and various standalone systems, we ignore exec_file. */
613 virtual bool can_create_inferior ();
614 virtual void create_inferior (const char *, const std::string
&,
616 virtual void post_startup_inferior (ptid_t
)
617 TARGET_DEFAULT_IGNORE ();
618 virtual int insert_fork_catchpoint (int)
619 TARGET_DEFAULT_RETURN (1);
620 virtual int remove_fork_catchpoint (int)
621 TARGET_DEFAULT_RETURN (1);
622 virtual int insert_vfork_catchpoint (int)
623 TARGET_DEFAULT_RETURN (1);
624 virtual int remove_vfork_catchpoint (int)
625 TARGET_DEFAULT_RETURN (1);
626 virtual bool follow_fork (bool, bool)
627 TARGET_DEFAULT_FUNC (default_follow_fork
);
628 virtual int insert_exec_catchpoint (int)
629 TARGET_DEFAULT_RETURN (1);
630 virtual int remove_exec_catchpoint (int)
631 TARGET_DEFAULT_RETURN (1);
632 virtual void follow_exec (struct inferior
*, const char *)
633 TARGET_DEFAULT_IGNORE ();
634 virtual int set_syscall_catchpoint (int, bool, int,
635 gdb::array_view
<const int>)
636 TARGET_DEFAULT_RETURN (1);
637 virtual void mourn_inferior ()
638 TARGET_DEFAULT_FUNC (default_mourn_inferior
);
640 /* Note that can_run is special and can be invoked on an unpushed
641 target. Targets defining this method must also define
642 to_can_async_p and to_supports_non_stop. */
643 virtual bool can_run ();
645 /* Documentation of this routine is provided with the corresponding
647 virtual void pass_signals (gdb::array_view
<const unsigned char> TARGET_DEBUG_PRINTER (target_debug_print_signals
))
648 TARGET_DEFAULT_IGNORE ();
650 /* Documentation of this routine is provided with the
651 corresponding target_* function. */
652 virtual void program_signals (gdb::array_view
<const unsigned char> TARGET_DEBUG_PRINTER (target_debug_print_signals
))
653 TARGET_DEFAULT_IGNORE ();
655 virtual bool thread_alive (ptid_t ptid
)
656 TARGET_DEFAULT_RETURN (false);
657 virtual void update_thread_list ()
658 TARGET_DEFAULT_IGNORE ();
659 virtual std::string
pid_to_str (ptid_t
)
660 TARGET_DEFAULT_FUNC (default_pid_to_str
);
661 virtual const char *extra_thread_info (thread_info
*)
662 TARGET_DEFAULT_RETURN (NULL
);
663 virtual const char *thread_name (thread_info
*)
664 TARGET_DEFAULT_RETURN (NULL
);
665 virtual thread_info
*thread_handle_to_thread_info (const gdb_byte
*,
668 TARGET_DEFAULT_RETURN (NULL
);
669 /* See target_thread_info_to_thread_handle. */
670 virtual gdb::byte_vector
thread_info_to_thread_handle (struct thread_info
*)
671 TARGET_DEFAULT_RETURN (gdb::byte_vector ());
672 virtual void stop (ptid_t
)
673 TARGET_DEFAULT_IGNORE ();
674 virtual void interrupt ()
675 TARGET_DEFAULT_IGNORE ();
676 virtual void pass_ctrlc ()
677 TARGET_DEFAULT_FUNC (default_target_pass_ctrlc
);
678 virtual void rcmd (const char *command
, struct ui_file
*output
)
679 TARGET_DEFAULT_FUNC (default_rcmd
);
680 virtual char *pid_to_exec_file (int pid
)
681 TARGET_DEFAULT_RETURN (NULL
);
682 virtual void log_command (const char *)
683 TARGET_DEFAULT_IGNORE ();
684 virtual struct target_section_table
*get_section_table ()
685 TARGET_DEFAULT_RETURN (NULL
);
687 /* Provide default values for all "must have" methods. */
688 virtual bool has_all_memory () { return false; }
689 virtual bool has_memory () { return false; }
690 virtual bool has_stack () { return false; }
691 virtual bool has_registers () { return false; }
692 virtual bool has_execution (inferior
*inf
) { return false; }
694 /* Control thread execution. */
695 virtual thread_control_capabilities
get_thread_control_capabilities ()
696 TARGET_DEFAULT_RETURN (tc_none
);
697 virtual bool attach_no_wait ()
698 TARGET_DEFAULT_RETURN (0);
699 /* This method must be implemented in some situations. See the
700 comment on 'can_run'. */
701 virtual bool can_async_p ()
702 TARGET_DEFAULT_RETURN (false);
703 virtual bool is_async_p ()
704 TARGET_DEFAULT_RETURN (false);
705 virtual void async (int)
706 TARGET_DEFAULT_NORETURN (tcomplain ());
707 virtual int async_wait_fd ()
708 TARGET_DEFAULT_NORETURN (noprocess ());
709 virtual void thread_events (int)
710 TARGET_DEFAULT_IGNORE ();
711 /* This method must be implemented in some situations. See the
712 comment on 'can_run'. */
713 virtual bool supports_non_stop ()
714 TARGET_DEFAULT_RETURN (false);
715 /* Return true if the target operates in non-stop mode even with
716 "set non-stop off". */
717 virtual bool always_non_stop_p ()
718 TARGET_DEFAULT_RETURN (false);
719 /* find_memory_regions support method for gcore */
720 virtual int find_memory_regions (find_memory_region_ftype func
, void *data
)
721 TARGET_DEFAULT_FUNC (dummy_find_memory_regions
);
722 /* make_corefile_notes support method for gcore */
723 virtual char *make_corefile_notes (bfd
*, int *)
724 TARGET_DEFAULT_FUNC (dummy_make_corefile_notes
);
725 /* get_bookmark support method for bookmarks */
726 virtual gdb_byte
*get_bookmark (const char *, int)
727 TARGET_DEFAULT_NORETURN (tcomplain ());
728 /* goto_bookmark support method for bookmarks */
729 virtual void goto_bookmark (const gdb_byte
*, int)
730 TARGET_DEFAULT_NORETURN (tcomplain ());
731 /* Return the thread-local address at OFFSET in the
732 thread-local storage for the thread PTID and the shared library
733 or executable file given by LOAD_MODULE_ADDR. If that block of
734 thread-local storage hasn't been allocated yet, this function
735 may throw an error. LOAD_MODULE_ADDR may be zero for statically
736 linked multithreaded inferiors. */
737 virtual CORE_ADDR
get_thread_local_address (ptid_t ptid
,
738 CORE_ADDR load_module_addr
,
740 TARGET_DEFAULT_NORETURN (generic_tls_error ());
742 /* Request that OPS transfer up to LEN addressable units of the target's
743 OBJECT. When reading from a memory object, the size of an addressable
744 unit is architecture dependent and can be found using
745 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is
746 1 byte long. The OFFSET, for a seekable object, specifies the
747 starting point. The ANNEX can be used to provide additional
748 data-specific information to the target.
750 Return the transferred status, error or OK (an
751 'enum target_xfer_status' value). Save the number of addressable units
752 actually transferred in *XFERED_LEN if transfer is successful
753 (TARGET_XFER_OK) or the number unavailable units if the requested
754 data is unavailable (TARGET_XFER_UNAVAILABLE). *XFERED_LEN
755 smaller than LEN does not indicate the end of the object, only
756 the end of the transfer; higher level code should continue
757 transferring if desired. This is handled in target.c.
759 The interface does not support a "retry" mechanism. Instead it
760 assumes that at least one addressable unit will be transfered on each
763 NOTE: cagney/2003-10-17: The current interface can lead to
764 fragmented transfers. Lower target levels should not implement
765 hacks, such as enlarging the transfer, in an attempt to
766 compensate for this. Instead, the target stack should be
767 extended so that it implements supply/collect methods and a
768 look-aside object cache. With that available, the lowest
769 target can safely and freely "push" data up the stack.
771 See target_read and target_write for more information. One,
772 and only one, of readbuf or writebuf must be non-NULL. */
774 virtual enum target_xfer_status
xfer_partial (enum target_object object
,
777 const gdb_byte
*writebuf
,
778 ULONGEST offset
, ULONGEST len
,
779 ULONGEST
*xfered_len
)
780 TARGET_DEFAULT_RETURN (TARGET_XFER_E_IO
);
782 /* Return the limit on the size of any single memory transfer
785 virtual ULONGEST
get_memory_xfer_limit ()
786 TARGET_DEFAULT_RETURN (ULONGEST_MAX
);
788 /* Returns the memory map for the target. A return value of NULL
789 means that no memory map is available. If a memory address
790 does not fall within any returned regions, it's assumed to be
791 RAM. The returned memory regions should not overlap.
793 The order of regions does not matter; target_memory_map will
794 sort regions by starting address. For that reason, this
795 function should not be called directly except via
798 This method should not cache data; if the memory map could
799 change unexpectedly, it should be invalidated, and higher
800 layers will re-fetch it. */
801 virtual std::vector
<mem_region
> memory_map ()
802 TARGET_DEFAULT_RETURN (std::vector
<mem_region
> ());
804 /* Erases the region of flash memory starting at ADDRESS, of
807 Precondition: both ADDRESS and ADDRESS+LENGTH should be aligned
808 on flash block boundaries, as reported by 'to_memory_map'. */
809 virtual void flash_erase (ULONGEST address
, LONGEST length
)
810 TARGET_DEFAULT_NORETURN (tcomplain ());
812 /* Finishes a flash memory write sequence. After this operation
813 all flash memory should be available for writing and the result
814 of reading from areas written by 'to_flash_write' should be
815 equal to what was written. */
816 virtual void flash_done ()
817 TARGET_DEFAULT_NORETURN (tcomplain ());
819 /* Describe the architecture-specific features of this target. If
820 OPS doesn't have a description, this should delegate to the
821 "beneath" target. Returns the description found, or NULL if no
822 description was available. */
823 virtual const struct target_desc
*read_description ()
824 TARGET_DEFAULT_RETURN (NULL
);
826 /* Build the PTID of the thread on which a given task is running,
827 based on LWP and THREAD. These values are extracted from the
828 task Private_Data section of the Ada Task Control Block, and
829 their interpretation depends on the target. */
830 virtual ptid_t
get_ada_task_ptid (long lwp
, long thread
)
831 TARGET_DEFAULT_FUNC (default_get_ada_task_ptid
);
833 /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
834 Return 0 if *READPTR is already at the end of the buffer.
835 Return -1 if there is insufficient buffer for a whole entry.
836 Return 1 if an entry was read into *TYPEP and *VALP. */
837 virtual int auxv_parse (gdb_byte
**readptr
,
838 gdb_byte
*endptr
, CORE_ADDR
*typep
, CORE_ADDR
*valp
)
839 TARGET_DEFAULT_FUNC (default_auxv_parse
);
841 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
842 sequence of bytes in PATTERN with length PATTERN_LEN.
844 The result is 1 if found, 0 if not found, and -1 if there was an error
845 requiring halting of the search (e.g. memory read error).
846 If the pattern is found the address is recorded in FOUND_ADDRP. */
847 virtual int search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
848 const gdb_byte
*pattern
, ULONGEST pattern_len
,
849 CORE_ADDR
*found_addrp
)
850 TARGET_DEFAULT_FUNC (default_search_memory
);
852 /* Can target execute in reverse? */
853 virtual bool can_execute_reverse ()
854 TARGET_DEFAULT_RETURN (false);
856 /* The direction the target is currently executing. Must be
857 implemented on targets that support reverse execution and async
858 mode. The default simply returns forward execution. */
859 virtual enum exec_direction_kind
execution_direction ()
860 TARGET_DEFAULT_FUNC (default_execution_direction
);
862 /* Does this target support debugging multiple processes
864 virtual bool supports_multi_process ()
865 TARGET_DEFAULT_RETURN (false);
867 /* Does this target support enabling and disabling tracepoints while a trace
868 experiment is running? */
869 virtual bool supports_enable_disable_tracepoint ()
870 TARGET_DEFAULT_RETURN (false);
872 /* Does this target support disabling address space randomization? */
873 virtual bool supports_disable_randomization ()
874 TARGET_DEFAULT_FUNC (find_default_supports_disable_randomization
);
876 /* Does this target support the tracenz bytecode for string collection? */
877 virtual bool supports_string_tracing ()
878 TARGET_DEFAULT_RETURN (false);
880 /* Does this target support evaluation of breakpoint conditions on its
882 virtual bool supports_evaluation_of_breakpoint_conditions ()
883 TARGET_DEFAULT_RETURN (false);
885 /* Does this target support evaluation of breakpoint commands on its
887 virtual bool can_run_breakpoint_commands ()
888 TARGET_DEFAULT_RETURN (false);
890 /* Determine current architecture of thread PTID.
892 The target is supposed to determine the architecture of the code where
893 the target is currently stopped at. The architecture information is
894 used to perform decr_pc_after_break adjustment, and also to determine
895 the frame architecture of the innermost frame. ptrace operations need to
896 operate according to target_gdbarch (). */
897 virtual struct gdbarch
*thread_architecture (ptid_t
)
898 TARGET_DEFAULT_RETURN (NULL
);
900 /* Determine current address space of thread PTID. */
901 virtual struct address_space
*thread_address_space (ptid_t
)
902 TARGET_DEFAULT_RETURN (NULL
);
904 /* Target file operations. */
906 /* Return nonzero if the filesystem seen by the current inferior
907 is the local filesystem, zero otherwise. */
908 virtual bool filesystem_is_local ()
909 TARGET_DEFAULT_RETURN (true);
911 /* Open FILENAME on the target, in the filesystem as seen by INF,
912 using FLAGS and MODE. If INF is NULL, use the filesystem seen
913 by the debugger (GDB or, for remote targets, the remote stub).
914 If WARN_IF_SLOW is nonzero, print a warning message if the file
915 is being accessed over a link that may be slow. Return a
916 target file descriptor, or -1 if an error occurs (and set
918 virtual int fileio_open (struct inferior
*inf
, const char *filename
,
919 int flags
, int mode
, int warn_if_slow
,
922 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
923 Return the number of bytes written, or -1 if an error occurs
924 (and set *TARGET_ERRNO). */
925 virtual int fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
926 ULONGEST offset
, int *target_errno
);
928 /* Read up to LEN bytes FD on the target into READ_BUF.
929 Return the number of bytes read, or -1 if an error occurs
930 (and set *TARGET_ERRNO). */
931 virtual int fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
932 ULONGEST offset
, int *target_errno
);
934 /* Get information about the file opened as FD and put it in
935 SB. Return 0 on success, or -1 if an error occurs (and set
937 virtual int fileio_fstat (int fd
, struct stat
*sb
, int *target_errno
);
939 /* Close FD on the target. Return 0, or -1 if an error occurs
940 (and set *TARGET_ERRNO). */
941 virtual int fileio_close (int fd
, int *target_errno
);
943 /* Unlink FILENAME on the target, in the filesystem as seen by
944 INF. If INF is NULL, use the filesystem seen by the debugger
945 (GDB or, for remote targets, the remote stub). Return 0, or
946 -1 if an error occurs (and set *TARGET_ERRNO). */
947 virtual int fileio_unlink (struct inferior
*inf
,
948 const char *filename
,
951 /* Read value of symbolic link FILENAME on the target, in the
952 filesystem as seen by INF. If INF is NULL, use the filesystem
953 seen by the debugger (GDB or, for remote targets, the remote
954 stub). Return a string, or an empty optional if an error
955 occurs (and set *TARGET_ERRNO). */
956 virtual gdb::optional
<std::string
> fileio_readlink (struct inferior
*inf
,
957 const char *filename
,
960 /* Implement the "info proc" command. Returns true if the target
961 actually implemented the command, false otherwise. */
962 virtual bool info_proc (const char *, enum info_proc_what
);
964 /* Tracepoint-related operations. */
966 /* Prepare the target for a tracing run. */
967 virtual void trace_init ()
968 TARGET_DEFAULT_NORETURN (tcomplain ());
970 /* Send full details of a tracepoint location to the target. */
971 virtual void download_tracepoint (struct bp_location
*location
)
972 TARGET_DEFAULT_NORETURN (tcomplain ());
974 /* Is the target able to download tracepoint locations in current
976 virtual bool can_download_tracepoint ()
977 TARGET_DEFAULT_RETURN (false);
979 /* Send full details of a trace state variable to the target. */
980 virtual void download_trace_state_variable (const trace_state_variable
&tsv
)
981 TARGET_DEFAULT_NORETURN (tcomplain ());
983 /* Enable a tracepoint on the target. */
984 virtual void enable_tracepoint (struct bp_location
*location
)
985 TARGET_DEFAULT_NORETURN (tcomplain ());
987 /* Disable a tracepoint on the target. */
988 virtual void disable_tracepoint (struct bp_location
*location
)
989 TARGET_DEFAULT_NORETURN (tcomplain ());
991 /* Inform the target info of memory regions that are readonly
992 (such as text sections), and so it should return data from
993 those rather than look in the trace buffer. */
994 virtual void trace_set_readonly_regions ()
995 TARGET_DEFAULT_NORETURN (tcomplain ());
997 /* Start a trace run. */
998 virtual void trace_start ()
999 TARGET_DEFAULT_NORETURN (tcomplain ());
1001 /* Get the current status of a tracing run. */
1002 virtual int get_trace_status (struct trace_status
*ts
)
1003 TARGET_DEFAULT_RETURN (-1);
1005 virtual void get_tracepoint_status (struct breakpoint
*tp
,
1006 struct uploaded_tp
*utp
)
1007 TARGET_DEFAULT_NORETURN (tcomplain ());
1009 /* Stop a trace run. */
1010 virtual void trace_stop ()
1011 TARGET_DEFAULT_NORETURN (tcomplain ());
1013 /* Ask the target to find a trace frame of the given type TYPE,
1014 using NUM, ADDR1, and ADDR2 as search parameters. Returns the
1015 number of the trace frame, and also the tracepoint number at
1016 TPP. If no trace frame matches, return -1. May throw if the
1018 virtual int trace_find (enum trace_find_type type
, int num
,
1019 CORE_ADDR addr1
, CORE_ADDR addr2
, int *tpp
)
1020 TARGET_DEFAULT_RETURN (-1);
1022 /* Get the value of the trace state variable number TSV, returning
1023 1 if the value is known and writing the value itself into the
1024 location pointed to by VAL, else returning 0. */
1025 virtual bool get_trace_state_variable_value (int tsv
, LONGEST
*val
)
1026 TARGET_DEFAULT_RETURN (false);
1028 virtual int save_trace_data (const char *filename
)
1029 TARGET_DEFAULT_NORETURN (tcomplain ());
1031 virtual int upload_tracepoints (struct uploaded_tp
**utpp
)
1032 TARGET_DEFAULT_RETURN (0);
1034 virtual int upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
1035 TARGET_DEFAULT_RETURN (0);
1037 virtual LONGEST
get_raw_trace_data (gdb_byte
*buf
,
1038 ULONGEST offset
, LONGEST len
)
1039 TARGET_DEFAULT_NORETURN (tcomplain ());
1041 /* Get the minimum length of instruction on which a fast tracepoint
1042 may be set on the target. If this operation is unsupported,
1043 return -1. If for some reason the minimum length cannot be
1044 determined, return 0. */
1045 virtual int get_min_fast_tracepoint_insn_len ()
1046 TARGET_DEFAULT_RETURN (-1);
1048 /* Set the target's tracing behavior in response to unexpected
1049 disconnection - set VAL to 1 to keep tracing, 0 to stop. */
1050 virtual void set_disconnected_tracing (int val
)
1051 TARGET_DEFAULT_IGNORE ();
1052 virtual void set_circular_trace_buffer (int val
)
1053 TARGET_DEFAULT_IGNORE ();
1054 /* Set the size of trace buffer in the target. */
1055 virtual void set_trace_buffer_size (LONGEST val
)
1056 TARGET_DEFAULT_IGNORE ();
1058 /* Add/change textual notes about the trace run, returning 1 if
1059 successful, 0 otherwise. */
1060 virtual bool set_trace_notes (const char *user
, const char *notes
,
1061 const char *stopnotes
)
1062 TARGET_DEFAULT_RETURN (false);
1064 /* Return the processor core that thread PTID was last seen on.
1065 This information is updated only when:
1066 - update_thread_list is called
1068 If the core cannot be determined -- either for the specified
1069 thread, or right now, or in this debug session, or for this
1070 target -- return -1. */
1071 virtual int core_of_thread (ptid_t ptid
)
1072 TARGET_DEFAULT_RETURN (-1);
1074 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range
1075 matches the contents of [DATA,DATA+SIZE). Returns 1 if there's
1076 a match, 0 if there's a mismatch, and -1 if an error is
1077 encountered while reading memory. */
1078 virtual int verify_memory (const gdb_byte
*data
,
1079 CORE_ADDR memaddr
, ULONGEST size
)
1080 TARGET_DEFAULT_FUNC (default_verify_memory
);
1082 /* Return the address of the start of the Thread Information Block
1083 a Windows OS specific feature. */
1084 virtual bool get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
1085 TARGET_DEFAULT_NORETURN (tcomplain ());
1087 /* Send the new settings of write permission variables. */
1088 virtual void set_permissions ()
1089 TARGET_DEFAULT_IGNORE ();
1091 /* Look for a static tracepoint marker at ADDR, and fill in MARKER
1092 with its details. Return true on success, false on failure. */
1093 virtual bool static_tracepoint_marker_at (CORE_ADDR
,
1094 static_tracepoint_marker
*marker
)
1095 TARGET_DEFAULT_RETURN (false);
1097 /* Return a vector of all tracepoints markers string id ID, or all
1098 markers if ID is NULL. */
1099 virtual std::vector
<static_tracepoint_marker
>
1100 static_tracepoint_markers_by_strid (const char *id
)
1101 TARGET_DEFAULT_NORETURN (tcomplain ());
1103 /* Return a traceframe info object describing the current
1104 traceframe's contents. This method should not cache data;
1105 higher layers take care of caching, invalidating, and
1106 re-fetching when necessary. */
1107 virtual traceframe_info_up
traceframe_info ()
1108 TARGET_DEFAULT_NORETURN (tcomplain ());
1110 /* Ask the target to use or not to use agent according to USE.
1111 Return true if successful, false otherwise. */
1112 virtual bool use_agent (bool use
)
1113 TARGET_DEFAULT_NORETURN (tcomplain ());
1115 /* Is the target able to use agent in current state? */
1116 virtual bool can_use_agent ()
1117 TARGET_DEFAULT_RETURN (false);
1119 /* Enable branch tracing for PTID using CONF configuration.
1120 Return a branch trace target information struct for reading and for
1121 disabling branch trace. */
1122 virtual struct btrace_target_info
*enable_btrace (ptid_t ptid
,
1123 const struct btrace_config
*conf
)
1124 TARGET_DEFAULT_NORETURN (tcomplain ());
1126 /* Disable branch tracing and deallocate TINFO. */
1127 virtual void disable_btrace (struct btrace_target_info
*tinfo
)
1128 TARGET_DEFAULT_NORETURN (tcomplain ());
1130 /* Disable branch tracing and deallocate TINFO. This function is similar
1131 to to_disable_btrace, except that it is called during teardown and is
1132 only allowed to perform actions that are safe. A counter-example would
1133 be attempting to talk to a remote target. */
1134 virtual void teardown_btrace (struct btrace_target_info
*tinfo
)
1135 TARGET_DEFAULT_NORETURN (tcomplain ());
1137 /* Read branch trace data for the thread indicated by BTINFO into DATA.
1138 DATA is cleared before new trace is added. */
1139 virtual enum btrace_error
read_btrace (struct btrace_data
*data
,
1140 struct btrace_target_info
*btinfo
,
1141 enum btrace_read_type type
)
1142 TARGET_DEFAULT_NORETURN (tcomplain ());
1144 /* Get the branch trace configuration. */
1145 virtual const struct btrace_config
*btrace_conf (const struct btrace_target_info
*)
1146 TARGET_DEFAULT_RETURN (NULL
);
1148 /* Current recording method. */
1149 virtual enum record_method
record_method (ptid_t ptid
)
1150 TARGET_DEFAULT_RETURN (RECORD_METHOD_NONE
);
1152 /* Stop trace recording. */
1153 virtual void stop_recording ()
1154 TARGET_DEFAULT_IGNORE ();
1156 /* Print information about the recording. */
1157 virtual void info_record ()
1158 TARGET_DEFAULT_IGNORE ();
1160 /* Save the recorded execution trace into a file. */
1161 virtual void save_record (const char *filename
)
1162 TARGET_DEFAULT_NORETURN (tcomplain ());
1164 /* Delete the recorded execution trace from the current position
1166 virtual bool supports_delete_record ()
1167 TARGET_DEFAULT_RETURN (false);
1168 virtual void delete_record ()
1169 TARGET_DEFAULT_NORETURN (tcomplain ());
1171 /* Query if the record target is currently replaying PTID. */
1172 virtual bool record_is_replaying (ptid_t ptid
)
1173 TARGET_DEFAULT_RETURN (false);
1175 /* Query if the record target will replay PTID if it were resumed in
1176 execution direction DIR. */
1177 virtual bool record_will_replay (ptid_t ptid
, int dir
)
1178 TARGET_DEFAULT_RETURN (false);
1180 /* Stop replaying. */
1181 virtual void record_stop_replaying ()
1182 TARGET_DEFAULT_IGNORE ();
1184 /* Go to the begin of the execution trace. */
1185 virtual void goto_record_begin ()
1186 TARGET_DEFAULT_NORETURN (tcomplain ());
1188 /* Go to the end of the execution trace. */
1189 virtual void goto_record_end ()
1190 TARGET_DEFAULT_NORETURN (tcomplain ());
1192 /* Go to a specific location in the recorded execution trace. */
1193 virtual void goto_record (ULONGEST insn
)
1194 TARGET_DEFAULT_NORETURN (tcomplain ());
1196 /* Disassemble SIZE instructions in the recorded execution trace from
1197 the current position.
1198 If SIZE < 0, disassemble abs (SIZE) preceding instructions; otherwise,
1199 disassemble SIZE succeeding instructions. */
1200 virtual void insn_history (int size
, gdb_disassembly_flags flags
)
1201 TARGET_DEFAULT_NORETURN (tcomplain ());
1203 /* Disassemble SIZE instructions in the recorded execution trace around
1205 If SIZE < 0, disassemble abs (SIZE) instructions before FROM; otherwise,
1206 disassemble SIZE instructions after FROM. */
1207 virtual void insn_history_from (ULONGEST from
, int size
,
1208 gdb_disassembly_flags flags
)
1209 TARGET_DEFAULT_NORETURN (tcomplain ());
1211 /* Disassemble a section of the recorded execution trace from instruction
1212 BEGIN (inclusive) to instruction END (inclusive). */
1213 virtual void insn_history_range (ULONGEST begin
, ULONGEST end
,
1214 gdb_disassembly_flags flags
)
1215 TARGET_DEFAULT_NORETURN (tcomplain ());
1217 /* Print a function trace of the recorded execution trace.
1218 If SIZE < 0, print abs (SIZE) preceding functions; otherwise, print SIZE
1219 succeeding functions. */
1220 virtual void call_history (int size
, record_print_flags flags
)
1221 TARGET_DEFAULT_NORETURN (tcomplain ());
1223 /* Print a function trace of the recorded execution trace starting
1225 If SIZE < 0, print abs (SIZE) functions before FROM; otherwise, print
1226 SIZE functions after FROM. */
1227 virtual void call_history_from (ULONGEST begin
, int size
, record_print_flags flags
)
1228 TARGET_DEFAULT_NORETURN (tcomplain ());
1230 /* Print a function trace of an execution trace section from function BEGIN
1231 (inclusive) to function END (inclusive). */
1232 virtual void call_history_range (ULONGEST begin
, ULONGEST end
, record_print_flags flags
)
1233 TARGET_DEFAULT_NORETURN (tcomplain ());
1235 /* True if TARGET_OBJECT_LIBRARIES_SVR4 may be read with a
1237 virtual bool augmented_libraries_svr4_read ()
1238 TARGET_DEFAULT_RETURN (false);
1240 /* Those unwinders are tried before any other arch unwinders. If
1241 SELF doesn't have unwinders, it should delegate to the
1242 "beneath" target. */
1243 virtual const struct frame_unwind
*get_unwinder ()
1244 TARGET_DEFAULT_RETURN (NULL
);
1246 virtual const struct frame_unwind
*get_tailcall_unwinder ()
1247 TARGET_DEFAULT_RETURN (NULL
);
1249 /* Prepare to generate a core file. */
1250 virtual void prepare_to_generate_core ()
1251 TARGET_DEFAULT_IGNORE ();
1253 /* Cleanup after generating a core file. */
1254 virtual void done_generating_core ()
1255 TARGET_DEFAULT_IGNORE ();
1257 virtual displaced_step_prepare_status
displaced_step_prepare (thread_info
*thread
)
1258 TARGET_DEFAULT_FUNC (default_displaced_step_prepare
);
1260 virtual displaced_step_finish_status
displaced_step_finish (thread_info
*thread
, gdb_signal sig
)
1261 TARGET_DEFAULT_FUNC (default_displaced_step_finish
);
1264 /* Deleter for std::unique_ptr. See comments in
1265 target_ops::~target_ops and target_ops::close about heap-allocated
1267 struct target_ops_deleter
1269 void operator() (target_ops
*target
)
1275 /* A unique pointer for target_ops. */
1276 typedef std::unique_ptr
<target_ops
, target_ops_deleter
> target_ops_up
;
1278 /* Decref a target and close if, if there are no references left. */
1279 extern void decref_target (target_ops
*t
);
1281 /* A policy class to interface gdb::ref_ptr with target_ops. */
1283 struct target_ops_ref_policy
1285 static void incref (target_ops
*t
)
1290 static void decref (target_ops
*t
)
1296 /* A gdb::ref_ptr pointer to a target_ops. */
1297 typedef gdb::ref_ptr
<target_ops
, target_ops_ref_policy
> target_ops_ref
;
1299 /* Native target backends call this once at initialization time to
1300 inform the core about which is the target that can respond to "run"
1301 or "attach". Note: native targets are always singletons. */
1302 extern void set_native_target (target_ops
*target
);
1304 /* Get the registered native target, if there's one. Otherwise return
1306 extern target_ops
*get_native_target ();
1308 /* Type that manages a target stack. See description of target stacks
1309 and strata at the top of the file. */
1314 target_stack () = default;
1315 DISABLE_COPY_AND_ASSIGN (target_stack
);
1317 /* Push a new target into the stack of the existing target
1318 accessors, possibly superseding some existing accessor. */
1319 void push (target_ops
*t
);
1321 /* Remove a target from the stack, wherever it may be. Return true
1322 if it was removed, false otherwise. */
1323 bool unpush (target_ops
*t
);
1325 /* Returns true if T is pushed on the target stack. */
1326 bool is_pushed (target_ops
*t
) const
1327 { return at (t
->stratum ()) == t
; }
1329 /* Return the target at STRATUM. */
1330 target_ops
*at (strata stratum
) const { return m_stack
[stratum
]; }
1332 /* Return the target at the top of the stack. */
1333 target_ops
*top () const { return at (m_top
); }
1335 /* Find the next target down the stack from the specified target. */
1336 target_ops
*find_beneath (const target_ops
*t
) const;
1339 /* The stratum of the top target. */
1340 enum strata m_top
{};
1342 /* The stack, represented as an array, with one slot per stratum.
1343 If no target is pushed at some stratum, the corresponding slot is
1345 target_ops
*m_stack
[(int) debug_stratum
+ 1] {};
1348 /* The ops structure for our "current" target process. This should
1349 never be NULL. If there is no target, it points to the dummy_target. */
1351 extern target_ops
*current_top_target ();
1353 /* Return the dummy target. */
1354 extern target_ops
*get_dummy_target ();
1356 /* Define easy words for doing these operations on our current target. */
1358 #define target_shortname (current_top_target ()->shortname ())
1359 #define target_longname (current_top_target ()->longname ())
1361 /* Does whatever cleanup is required for a target that we are no
1362 longer going to be calling. This routine is automatically always
1363 called after popping the target off the target stack - the target's
1364 own methods are no longer available through the target vector.
1365 Closing file descriptors and freeing all memory allocated memory are
1366 typical things it should do. */
1368 void target_close (struct target_ops
*targ
);
1370 /* Find the correct target to use for "attach". If a target on the
1371 current stack supports attaching, then it is returned. Otherwise,
1372 the default run target is returned. */
1374 extern struct target_ops
*find_attach_target (void);
1376 /* Find the correct target to use for "run". If a target on the
1377 current stack supports creating a new inferior, then it is
1378 returned. Otherwise, the default run target is returned. */
1380 extern struct target_ops
*find_run_target (void);
1382 /* Some targets don't generate traps when attaching to the inferior,
1383 or their target_attach implementation takes care of the waiting.
1384 These targets must set to_attach_no_wait. */
1386 #define target_attach_no_wait() \
1387 (current_top_target ()->attach_no_wait ())
1389 /* The target_attach operation places a process under debugger control,
1390 and stops the process.
1392 This operation provides a target-specific hook that allows the
1393 necessary bookkeeping to be performed after an attach completes. */
1394 #define target_post_attach(pid) \
1395 (current_top_target ()->post_attach) (pid)
1397 /* Display a message indicating we're about to detach from the current
1398 inferior process. */
1400 extern void target_announce_detach (int from_tty
);
1402 /* Takes a program previously attached to and detaches it.
1403 The program may resume execution (some targets do, some don't) and will
1404 no longer stop on signals, etc. We better not have left any breakpoints
1405 in the program or it'll die when it hits one. FROM_TTY says whether to be
1408 extern void target_detach (inferior
*inf
, int from_tty
);
1410 /* Disconnect from the current target without resuming it (leaving it
1411 waiting for a debugger). */
1413 extern void target_disconnect (const char *, int);
1415 /* Resume execution (or prepare for execution) of a target thread,
1416 process or all processes. STEP says whether to hardware
1417 single-step or to run free; SIGGNAL is the signal to be given to
1418 the target, or GDB_SIGNAL_0 for no signal. The caller may not pass
1419 GDB_SIGNAL_DEFAULT. A specific PTID means `step/resume only this
1420 process id'. A wildcard PTID (all threads, or all threads of
1421 process) means `step/resume INFERIOR_PTID, and let other threads
1422 (for which the wildcard PTID matches) resume with their
1423 'thread->suspend.stop_signal' signal (usually GDB_SIGNAL_0) if it
1424 is in "pass" state, or with no signal if in "no pass" state.
1426 In order to efficiently handle batches of resumption requests,
1427 targets may implement this method such that it records the
1428 resumption request, but defers the actual resumption to the
1429 target_commit_resume method implementation. See
1430 target_commit_resume below. */
1431 extern void target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
);
1433 /* Commit a series of resumption requests previously prepared with
1434 target_resume calls.
1436 GDB always calls target_commit_resume after calling target_resume
1437 one or more times. A target may thus use this method in
1438 coordination with the target_resume method to batch target-side
1439 resumption requests. In that case, the target doesn't actually
1440 resume in its target_resume implementation. Instead, it prepares
1441 the resumption in target_resume, and defers the actual resumption
1442 to target_commit_resume. E.g., the remote target uses this to
1443 coalesce multiple resumption requests in a single vCont packet. */
1444 extern void target_commit_resume ();
1446 /* Setup to defer target_commit_resume calls, and reactivate
1447 target_commit_resume on destruction, if it was previously
1449 extern scoped_restore_tmpl
<int> make_scoped_defer_target_commit_resume ();
1451 /* For target_read_memory see target/target.h. */
1453 /* The default target_ops::to_wait implementation. */
1455 extern ptid_t
default_target_wait (struct target_ops
*ops
,
1457 struct target_waitstatus
*status
,
1460 /* Fetch at least register REGNO, or all regs if regno == -1. No result. */
1462 extern void target_fetch_registers (struct regcache
*regcache
, int regno
);
1464 /* Store at least register REGNO, or all regs if REGNO == -1.
1465 It can store as many registers as it wants to, so target_prepare_to_store
1466 must have been previously called. Calls error() if there are problems. */
1468 extern void target_store_registers (struct regcache
*regcache
, int regs
);
1470 /* Get ready to modify the registers array. On machines which store
1471 individual registers, this doesn't need to do anything. On machines
1472 which store all the registers in one fell swoop, this makes sure
1473 that REGISTERS contains all the registers from the program being
1476 #define target_prepare_to_store(regcache) \
1477 (current_top_target ()->prepare_to_store) (regcache)
1479 /* Determine current address space of thread PTID. */
1481 struct address_space
*target_thread_address_space (ptid_t
);
1483 /* Implement the "info proc" command. This returns one if the request
1484 was handled, and zero otherwise. It can also throw an exception if
1485 an error was encountered while attempting to handle the
1488 int target_info_proc (const char *, enum info_proc_what
);
1490 /* Returns true if this target can disable address space randomization. */
1492 int target_supports_disable_randomization (void);
1494 /* Returns true if this target can enable and disable tracepoints
1495 while a trace experiment is running. */
1497 #define target_supports_enable_disable_tracepoint() \
1498 (current_top_target ()->supports_enable_disable_tracepoint) ()
1500 #define target_supports_string_tracing() \
1501 (current_top_target ()->supports_string_tracing) ()
1503 /* Returns true if this target can handle breakpoint conditions
1506 #define target_supports_evaluation_of_breakpoint_conditions() \
1507 (current_top_target ()->supports_evaluation_of_breakpoint_conditions) ()
1509 /* Returns true if this target can handle breakpoint commands
1512 #define target_can_run_breakpoint_commands() \
1513 (current_top_target ()->can_run_breakpoint_commands) ()
1515 extern int target_read_string (CORE_ADDR
, gdb::unique_xmalloc_ptr
<char> *,
1518 /* For target_read_memory see target/target.h. */
1520 extern int target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
1523 extern int target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
);
1525 extern int target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
);
1527 /* For target_write_memory see target/target.h. */
1529 extern int target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
,
1532 /* Fetches the target's memory map. If one is found it is sorted
1533 and returned, after some consistency checking. Otherwise, NULL
1535 std::vector
<mem_region
> target_memory_map (void);
1537 /* Erases all flash memory regions on the target. */
1538 void flash_erase_command (const char *cmd
, int from_tty
);
1540 /* Erase the specified flash region. */
1541 void target_flash_erase (ULONGEST address
, LONGEST length
);
1543 /* Finish a sequence of flash operations. */
1544 void target_flash_done (void);
1546 /* Describes a request for a memory write operation. */
1547 struct memory_write_request
1549 memory_write_request (ULONGEST begin_
, ULONGEST end_
,
1550 gdb_byte
*data_
= nullptr, void *baton_
= nullptr)
1551 : begin (begin_
), end (end_
), data (data_
), baton (baton_
)
1554 /* Begining address that must be written. */
1556 /* Past-the-end address. */
1558 /* The data to write. */
1560 /* A callback baton for progress reporting for this request. */
1564 /* Enumeration specifying different flash preservation behaviour. */
1565 enum flash_preserve_mode
1571 /* Write several memory blocks at once. This version can be more
1572 efficient than making several calls to target_write_memory, in
1573 particular because it can optimize accesses to flash memory.
1575 Moreover, this is currently the only memory access function in gdb
1576 that supports writing to flash memory, and it should be used for
1577 all cases where access to flash memory is desirable.
1579 REQUESTS is the vector of memory_write_request.
1580 PRESERVE_FLASH_P indicates what to do with blocks which must be
1581 erased, but not completely rewritten.
1582 PROGRESS_CB is a function that will be periodically called to provide
1583 feedback to user. It will be called with the baton corresponding
1584 to the request currently being written. It may also be called
1585 with a NULL baton, when preserved flash sectors are being rewritten.
1587 The function returns 0 on success, and error otherwise. */
1588 int target_write_memory_blocks
1589 (const std::vector
<memory_write_request
> &requests
,
1590 enum flash_preserve_mode preserve_flash_p
,
1591 void (*progress_cb
) (ULONGEST
, void *));
1593 /* Print a line about the current target. */
1595 #define target_files_info() \
1596 (current_top_target ()->files_info) ()
1598 /* Insert a breakpoint at address BP_TGT->placed_address in
1599 the target machine. Returns 0 for success, and returns non-zero or
1600 throws an error (with a detailed failure reason error code and
1601 message) otherwise. */
1603 extern int target_insert_breakpoint (struct gdbarch
*gdbarch
,
1604 struct bp_target_info
*bp_tgt
);
1606 /* Remove a breakpoint at address BP_TGT->placed_address in the target
1607 machine. Result is 0 for success, non-zero for error. */
1609 extern int target_remove_breakpoint (struct gdbarch
*gdbarch
,
1610 struct bp_target_info
*bp_tgt
,
1611 enum remove_bp_reason reason
);
1613 /* Return true if the target stack has a non-default
1614 "terminal_ours" method. */
1616 extern bool target_supports_terminal_ours (void);
1618 /* Kill the inferior process. Make it go away. */
1620 extern void target_kill (void);
1622 /* Load an executable file into the target process. This is expected
1623 to not only bring new code into the target process, but also to
1624 update GDB's symbol tables to match.
1626 ARG contains command-line arguments, to be broken down with
1627 buildargv (). The first non-switch argument is the filename to
1628 load, FILE; the second is a number (as parsed by strtoul (..., ...,
1629 0)), which is an offset to apply to the load addresses of FILE's
1630 sections. The target may define switches, or other non-switch
1631 arguments, as it pleases. */
1633 extern void target_load (const char *arg
, int from_tty
);
1635 /* Some targets (such as ttrace-based HPUX) don't allow us to request
1636 notification of inferior events such as fork and vork immediately
1637 after the inferior is created. (This because of how gdb gets an
1638 inferior created via invoking a shell to do it. In such a scenario,
1639 if the shell init file has commands in it, the shell will fork and
1640 exec for each of those commands, and we will see each such fork
1643 Such targets will supply an appropriate definition for this function. */
1645 #define target_post_startup_inferior(ptid) \
1646 (current_top_target ()->post_startup_inferior) (ptid)
1648 /* On some targets, we can catch an inferior fork or vfork event when
1649 it occurs. These functions insert/remove an already-created
1650 catchpoint for such events. They return 0 for success, 1 if the
1651 catchpoint type is not supported and -1 for failure. */
1653 #define target_insert_fork_catchpoint(pid) \
1654 (current_top_target ()->insert_fork_catchpoint) (pid)
1656 #define target_remove_fork_catchpoint(pid) \
1657 (current_top_target ()->remove_fork_catchpoint) (pid)
1659 #define target_insert_vfork_catchpoint(pid) \
1660 (current_top_target ()->insert_vfork_catchpoint) (pid)
1662 #define target_remove_vfork_catchpoint(pid) \
1663 (current_top_target ()->remove_vfork_catchpoint) (pid)
1665 /* If the inferior forks or vforks, this function will be called at
1666 the next resume in order to perform any bookkeeping and fiddling
1667 necessary to continue debugging either the parent or child, as
1668 requested, and releasing the other. Information about the fork
1669 or vfork event is available via get_last_target_status ().
1670 This function returns true if the inferior should not be resumed
1671 (i.e. there is another event pending). */
1673 bool target_follow_fork (bool follow_child
, bool detach_fork
);
1675 /* Handle the target-specific bookkeeping required when the inferior
1676 makes an exec call. INF is the exec'd inferior. */
1678 void target_follow_exec (struct inferior
*inf
, const char *execd_pathname
);
1680 /* On some targets, we can catch an inferior exec event when it
1681 occurs. These functions insert/remove an already-created
1682 catchpoint for such events. They return 0 for success, 1 if the
1683 catchpoint type is not supported and -1 for failure. */
1685 #define target_insert_exec_catchpoint(pid) \
1686 (current_top_target ()->insert_exec_catchpoint) (pid)
1688 #define target_remove_exec_catchpoint(pid) \
1689 (current_top_target ()->remove_exec_catchpoint) (pid)
1693 NEEDED is true if any syscall catch (of any kind) is requested.
1694 If NEEDED is false, it means the target can disable the mechanism to
1695 catch system calls because there are no more catchpoints of this type.
1697 ANY_COUNT is nonzero if a generic (filter-less) syscall catch is
1698 being requested. In this case, SYSCALL_COUNTS should be ignored.
1700 SYSCALL_COUNTS is an array of ints, indexed by syscall number. An
1701 element in this array is nonzero if that syscall should be caught.
1702 This argument only matters if ANY_COUNT is zero.
1704 Return 0 for success, 1 if syscall catchpoints are not supported or -1
1707 #define target_set_syscall_catchpoint(pid, needed, any_count, syscall_counts) \
1708 (current_top_target ()->set_syscall_catchpoint) (pid, needed, any_count, \
1711 /* The debugger has completed a blocking wait() call. There is now
1712 some process event that must be processed. This function should
1713 be defined by those targets that require the debugger to perform
1714 cleanup or internal state changes in response to the process event. */
1716 /* For target_mourn_inferior see target/target.h. */
1718 /* Does target have enough data to do a run or attach command? */
1720 extern int target_can_run ();
1722 /* Set list of signals to be handled in the target.
1724 PASS_SIGNALS is an array indexed by target signal number
1725 (enum gdb_signal). For every signal whose entry in this array is
1726 non-zero, the target is allowed -but not required- to skip reporting
1727 arrival of the signal to the GDB core by returning from target_wait,
1728 and to pass the signal directly to the inferior instead.
1730 However, if the target is hardware single-stepping a thread that is
1731 about to receive a signal, it needs to be reported in any case, even
1732 if mentioned in a previous target_pass_signals call. */
1734 extern void target_pass_signals
1735 (gdb::array_view
<const unsigned char> pass_signals
);
1737 /* Set list of signals the target may pass to the inferior. This
1738 directly maps to the "handle SIGNAL pass/nopass" setting.
1740 PROGRAM_SIGNALS is an array indexed by target signal
1741 number (enum gdb_signal). For every signal whose entry in this
1742 array is non-zero, the target is allowed to pass the signal to the
1743 inferior. Signals not present in the array shall be silently
1744 discarded. This does not influence whether to pass signals to the
1745 inferior as a result of a target_resume call. This is useful in
1746 scenarios where the target needs to decide whether to pass or not a
1747 signal to the inferior without GDB core involvement, such as for
1748 example, when detaching (as threads may have been suspended with
1749 pending signals not reported to GDB). */
1751 extern void target_program_signals
1752 (gdb::array_view
<const unsigned char> program_signals
);
1754 /* Check to see if a thread is still alive. */
1756 extern int target_thread_alive (ptid_t ptid
);
1758 /* Sync the target's threads with GDB's thread list. */
1760 extern void target_update_thread_list (void);
1762 /* Make target stop in a continuable fashion. (For instance, under
1763 Unix, this should act like SIGSTOP). Note that this function is
1764 asynchronous: it does not wait for the target to become stopped
1765 before returning. If this is the behavior you want please use
1766 target_stop_and_wait. */
1768 extern void target_stop (ptid_t ptid
);
1770 /* Interrupt the target. Unlike target_stop, this does not specify
1771 which thread/process reports the stop. For most target this acts
1772 like raising a SIGINT, though that's not absolutely required. This
1773 function is asynchronous. */
1775 extern void target_interrupt ();
1777 /* Pass a ^C, as determined to have been pressed by checking the quit
1778 flag, to the target, as if the user had typed the ^C on the
1779 inferior's controlling terminal while the inferior was in the
1780 foreground. Remote targets may take the opportunity to detect the
1781 remote side is not responding and offer to disconnect. */
1783 extern void target_pass_ctrlc (void);
1785 /* The default target_ops::to_pass_ctrlc implementation. Simply calls
1786 target_interrupt. */
1787 extern void default_target_pass_ctrlc (struct target_ops
*ops
);
1789 /* Send the specified COMMAND to the target's monitor
1790 (shell,interpreter) for execution. The result of the query is
1791 placed in OUTBUF. */
1793 #define target_rcmd(command, outbuf) \
1794 (current_top_target ()->rcmd) (command, outbuf)
1797 /* Does the target include all of memory, or only part of it? This
1798 determines whether we look up the target chain for other parts of
1799 memory if this target can't satisfy a request. */
1801 extern int target_has_all_memory_1 (void);
1802 #define target_has_all_memory target_has_all_memory_1 ()
1804 /* Does the target include memory? (Dummy targets don't.) */
1806 extern int target_has_memory_1 (void);
1807 #define target_has_memory target_has_memory_1 ()
1809 /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until
1810 we start a process.) */
1812 extern int target_has_stack_1 (void);
1813 #define target_has_stack target_has_stack_1 ()
1815 /* Does the target have registers? (Exec files don't.) */
1817 extern int target_has_registers_1 (void);
1818 #define target_has_registers target_has_registers_1 ()
1820 /* Does the target have execution? Can we make it jump (through
1821 hoops), or pop its stack a few times? This means that the current
1822 target is currently executing; for some targets, that's the same as
1823 whether or not the target is capable of execution, but there are
1824 also targets which can be current while not executing. In that
1825 case this will become true after to_create_inferior or
1828 extern bool target_has_execution_1 (inferior
*inf
);
1830 /* Like target_has_execution_1, but always passes
1831 current_inferior(). */
1833 extern int target_has_execution_current (void);
1835 #define target_has_execution target_has_execution_current ()
1837 /* Can the target support the debugger control of thread execution?
1838 Can it lock the thread scheduler? */
1840 #define target_can_lock_scheduler \
1841 (current_top_target ()->get_thread_control_capabilities () & tc_schedlock)
1843 /* Controls whether async mode is permitted. */
1844 extern bool target_async_permitted
;
1846 /* Can the target support asynchronous execution? */
1847 #define target_can_async_p() (current_top_target ()->can_async_p ())
1849 /* Is the target in asynchronous execution mode? */
1850 #define target_is_async_p() (current_top_target ()->is_async_p ())
1852 /* Enables/disabled async target events. */
1853 extern void target_async (int enable
);
1855 /* Enables/disables thread create and exit events. */
1856 extern void target_thread_events (int enable
);
1858 /* Whether support for controlling the target backends always in
1859 non-stop mode is enabled. */
1860 extern enum auto_boolean target_non_stop_enabled
;
1862 /* Is the target in non-stop mode? Some targets control the inferior
1863 in non-stop mode even with "set non-stop off". Always true if "set
1865 extern int target_is_non_stop_p (void);
1867 /* Return true if at least one inferior has a non-stop target. */
1868 extern bool exists_non_stop_target ();
1870 #define target_execution_direction() \
1871 (current_top_target ()->execution_direction ())
1873 /* Converts a process id to a string. Usually, the string just contains
1874 `process xyz', but on some systems it may contain
1875 `process xyz thread abc'. */
1877 extern std::string
target_pid_to_str (ptid_t ptid
);
1879 extern std::string
normal_pid_to_str (ptid_t ptid
);
1881 /* Return a short string describing extra information about PID,
1882 e.g. "sleeping", "runnable", "running on LWP 3". Null return value
1885 #define target_extra_thread_info(TP) \
1886 (current_top_target ()->extra_thread_info (TP))
1888 /* Return the thread's name, or NULL if the target is unable to determine it.
1889 The returned value must not be freed by the caller. */
1891 extern const char *target_thread_name (struct thread_info
*);
1893 /* Given a pointer to a thread library specific thread handle and
1894 its length, return a pointer to the corresponding thread_info struct. */
1896 extern struct thread_info
*target_thread_handle_to_thread_info
1897 (const gdb_byte
*thread_handle
, int handle_len
, struct inferior
*inf
);
1899 /* Given a thread, return the thread handle, a target-specific sequence of
1900 bytes which serves as a thread identifier within the program being
1902 extern gdb::byte_vector target_thread_info_to_thread_handle
1903 (struct thread_info
*);
1905 /* Attempts to find the pathname of the executable file
1906 that was run to create a specified process.
1908 The process PID must be stopped when this operation is used.
1910 If the executable file cannot be determined, NULL is returned.
1912 Else, a pointer to a character string containing the pathname
1913 is returned. This string should be copied into a buffer by
1914 the client if the string will not be immediately used, or if
1917 #define target_pid_to_exec_file(pid) \
1918 (current_top_target ()->pid_to_exec_file) (pid)
1920 /* See the to_thread_architecture description in struct target_ops. */
1922 #define target_thread_architecture(ptid) \
1923 (current_top_target ()->thread_architecture (ptid))
1926 * Iterator function for target memory regions.
1927 * Calls a callback function once for each memory region 'mapped'
1928 * in the child process. Defined as a simple macro rather than
1929 * as a function macro so that it can be tested for nullity.
1932 #define target_find_memory_regions(FUNC, DATA) \
1933 (current_top_target ()->find_memory_regions) (FUNC, DATA)
1936 * Compose corefile .note section.
1939 #define target_make_corefile_notes(BFD, SIZE_P) \
1940 (current_top_target ()->make_corefile_notes) (BFD, SIZE_P)
1942 /* Bookmark interfaces. */
1943 #define target_get_bookmark(ARGS, FROM_TTY) \
1944 (current_top_target ()->get_bookmark) (ARGS, FROM_TTY)
1946 #define target_goto_bookmark(ARG, FROM_TTY) \
1947 (current_top_target ()->goto_bookmark) (ARG, FROM_TTY)
1949 /* Hardware watchpoint interfaces. */
1951 /* GDB's current model is that there are three "kinds" of watchpoints,
1952 with respect to when they trigger and how you can move past them.
1954 Those are: continuable, steppable, and non-steppable.
1956 Continuable watchpoints are like x86's -- those trigger after the
1957 memory access's side effects are fully committed to memory. I.e.,
1958 they trap with the PC pointing at the next instruction already.
1959 Continuing past such a watchpoint is doable by just normally
1960 continuing, hence the name.
1962 Both steppable and non-steppable watchpoints trap before the memory
1963 access. I.e, the PC points at the instruction that is accessing
1964 the memory. So GDB needs to single-step once past the current
1965 instruction in order to make the access effective and check whether
1966 the instruction's side effects change the watched expression.
1968 Now, in order to step past that instruction, depending on
1969 architecture and target, you can have two situations:
1971 - steppable watchpoints: you can single-step with the watchpoint
1972 still armed, and the watchpoint won't trigger again.
1974 - non-steppable watchpoints: if you try to single-step with the
1975 watchpoint still armed, you'd trap the watchpoint again and the
1976 thread wouldn't make any progress. So GDB needs to temporarily
1977 remove the watchpoint in order to step past it.
1979 If your target/architecture does not signal that it has either
1980 steppable or non-steppable watchpoints via either
1981 target_have_steppable_watchpoint or
1982 gdbarch_have_nonsteppable_watchpoint, GDB assumes continuable
1985 /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or
1986 write). Only the INFERIOR_PTID task is being queried. */
1988 #define target_stopped_by_watchpoint() \
1989 ((current_top_target ()->stopped_by_watchpoint) ())
1991 /* Returns non-zero if the target stopped because it executed a
1992 software breakpoint instruction. */
1994 #define target_stopped_by_sw_breakpoint() \
1995 ((current_top_target ()->stopped_by_sw_breakpoint) ())
1997 #define target_supports_stopped_by_sw_breakpoint() \
1998 ((current_top_target ()->supports_stopped_by_sw_breakpoint) ())
2000 #define target_stopped_by_hw_breakpoint() \
2001 ((current_top_target ()->stopped_by_hw_breakpoint) ())
2003 #define target_supports_stopped_by_hw_breakpoint() \
2004 ((current_top_target ()->supports_stopped_by_hw_breakpoint) ())
2006 /* Non-zero if we have steppable watchpoints */
2008 #define target_have_steppable_watchpoint \
2009 (current_top_target ()->have_steppable_watchpoint ())
2011 /* Provide defaults for hardware watchpoint functions. */
2013 /* If the *_hw_beakpoint functions have not been defined
2014 elsewhere use the definitions in the target vector. */
2016 /* Returns positive if we can set a hardware watchpoint of type TYPE.
2017 Returns negative if the target doesn't have enough hardware debug
2018 registers available. Return zero if hardware watchpoint of type
2019 TYPE isn't supported. TYPE is one of bp_hardware_watchpoint,
2020 bp_read_watchpoint, bp_write_watchpoint, or bp_hardware_breakpoint.
2021 CNT is the number of such watchpoints used so far, including this
2022 one. OTHERTYPE is the number of watchpoints of other types than
2023 this one used so far. */
2025 #define target_can_use_hardware_watchpoint(TYPE,CNT,OTHERTYPE) \
2026 (current_top_target ()->can_use_hw_breakpoint) ( \
2027 TYPE, CNT, OTHERTYPE)
2029 /* Returns the number of debug registers needed to watch the given
2030 memory region, or zero if not supported. */
2032 #define target_region_ok_for_hw_watchpoint(addr, len) \
2033 (current_top_target ()->region_ok_for_hw_watchpoint) (addr, len)
2036 #define target_can_do_single_step() \
2037 (current_top_target ()->can_do_single_step) ()
2039 /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes.
2040 TYPE is 0 for write, 1 for read, and 2 for read/write accesses.
2041 COND is the expression for its condition, or NULL if there's none.
2042 Returns 0 for success, 1 if the watchpoint type is not supported,
2045 #define target_insert_watchpoint(addr, len, type, cond) \
2046 (current_top_target ()->insert_watchpoint) (addr, len, type, cond)
2048 #define target_remove_watchpoint(addr, len, type, cond) \
2049 (current_top_target ()->remove_watchpoint) (addr, len, type, cond)
2051 /* Insert a new masked watchpoint at ADDR using the mask MASK.
2052 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
2053 or hw_access for an access watchpoint. Returns 0 for success, 1 if
2054 masked watchpoints are not supported, -1 for failure. */
2056 extern int target_insert_mask_watchpoint (CORE_ADDR
, CORE_ADDR
,
2057 enum target_hw_bp_type
);
2059 /* Remove a masked watchpoint at ADDR with the mask MASK.
2060 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
2061 or hw_access for an access watchpoint. Returns 0 for success, non-zero
2064 extern int target_remove_mask_watchpoint (CORE_ADDR
, CORE_ADDR
,
2065 enum target_hw_bp_type
);
2067 /* Insert a hardware breakpoint at address BP_TGT->placed_address in
2068 the target machine. Returns 0 for success, and returns non-zero or
2069 throws an error (with a detailed failure reason error code and
2070 message) otherwise. */
2072 #define target_insert_hw_breakpoint(gdbarch, bp_tgt) \
2073 (current_top_target ()->insert_hw_breakpoint) (gdbarch, bp_tgt)
2075 #define target_remove_hw_breakpoint(gdbarch, bp_tgt) \
2076 (current_top_target ()->remove_hw_breakpoint) (gdbarch, bp_tgt)
2078 /* Return number of debug registers needed for a ranged breakpoint,
2079 or -1 if ranged breakpoints are not supported. */
2081 extern int target_ranged_break_num_registers (void);
2083 /* Return non-zero if target knows the data address which triggered this
2084 target_stopped_by_watchpoint, in such case place it to *ADDR_P. Only the
2085 INFERIOR_PTID task is being queried. */
2086 #define target_stopped_data_address(target, addr_p) \
2087 (target)->stopped_data_address (addr_p)
2089 /* Return non-zero if ADDR is within the range of a watchpoint spanning
2090 LENGTH bytes beginning at START. */
2091 #define target_watchpoint_addr_within_range(target, addr, start, length) \
2092 (target)->watchpoint_addr_within_range (addr, start, length)
2094 /* Return non-zero if the target is capable of using hardware to evaluate
2095 the condition expression. In this case, if the condition is false when
2096 the watched memory location changes, execution may continue without the
2097 debugger being notified.
2099 Due to limitations in the hardware implementation, it may be capable of
2100 avoiding triggering the watchpoint in some cases where the condition
2101 expression is false, but may report some false positives as well.
2102 For this reason, GDB will still evaluate the condition expression when
2103 the watchpoint triggers. */
2104 #define target_can_accel_watchpoint_condition(addr, len, type, cond) \
2105 (current_top_target ()->can_accel_watchpoint_condition) (addr, len, type, cond)
2107 /* Return number of debug registers needed for a masked watchpoint,
2108 -1 if masked watchpoints are not supported or -2 if the given address
2109 and mask combination cannot be used. */
2111 extern int target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
);
2113 /* Target can execute in reverse? */
2114 #define target_can_execute_reverse \
2115 current_top_target ()->can_execute_reverse ()
2117 extern const struct target_desc
*target_read_description (struct target_ops
*);
2119 #define target_get_ada_task_ptid(lwp, tid) \
2120 (current_top_target ()->get_ada_task_ptid) (lwp,tid)
2122 /* Utility implementation of searching memory. */
2123 extern int simple_search_memory (struct target_ops
* ops
,
2124 CORE_ADDR start_addr
,
2125 ULONGEST search_space_len
,
2126 const gdb_byte
*pattern
,
2127 ULONGEST pattern_len
,
2128 CORE_ADDR
*found_addrp
);
2130 /* Main entry point for searching memory. */
2131 extern int target_search_memory (CORE_ADDR start_addr
,
2132 ULONGEST search_space_len
,
2133 const gdb_byte
*pattern
,
2134 ULONGEST pattern_len
,
2135 CORE_ADDR
*found_addrp
);
2137 /* Target file operations. */
2139 /* Return nonzero if the filesystem seen by the current inferior
2140 is the local filesystem, zero otherwise. */
2141 #define target_filesystem_is_local() \
2142 current_top_target ()->filesystem_is_local ()
2144 /* Open FILENAME on the target, in the filesystem as seen by INF,
2145 using FLAGS and MODE. If INF is NULL, use the filesystem seen by
2146 the debugger (GDB or, for remote targets, the remote stub). Return
2147 a target file descriptor, or -1 if an error occurs (and set
2148 *TARGET_ERRNO). If WARN_IF_SLOW is true, print a warning message
2149 if the file is being accessed over a link that may be slow. */
2150 extern int target_fileio_open (struct inferior
*inf
,
2151 const char *filename
, int flags
,
2152 int mode
, bool warn_if_slow
,
2155 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
2156 Return the number of bytes written, or -1 if an error occurs
2157 (and set *TARGET_ERRNO). */
2158 extern int target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
2159 ULONGEST offset
, int *target_errno
);
2161 /* Read up to LEN bytes FD on the target into READ_BUF.
2162 Return the number of bytes read, or -1 if an error occurs
2163 (and set *TARGET_ERRNO). */
2164 extern int target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
2165 ULONGEST offset
, int *target_errno
);
2167 /* Get information about the file opened as FD on the target
2168 and put it in SB. Return 0 on success, or -1 if an error
2169 occurs (and set *TARGET_ERRNO). */
2170 extern int target_fileio_fstat (int fd
, struct stat
*sb
,
2173 /* Close FD on the target. Return 0, or -1 if an error occurs
2174 (and set *TARGET_ERRNO). */
2175 extern int target_fileio_close (int fd
, int *target_errno
);
2177 /* Unlink FILENAME on the target, in the filesystem as seen by INF.
2178 If INF is NULL, use the filesystem seen by the debugger (GDB or,
2179 for remote targets, the remote stub). Return 0, or -1 if an error
2180 occurs (and set *TARGET_ERRNO). */
2181 extern int target_fileio_unlink (struct inferior
*inf
,
2182 const char *filename
,
2185 /* Read value of symbolic link FILENAME on the target, in the
2186 filesystem as seen by INF. If INF is NULL, use the filesystem seen
2187 by the debugger (GDB or, for remote targets, the remote stub).
2188 Return a null-terminated string allocated via xmalloc, or NULL if
2189 an error occurs (and set *TARGET_ERRNO). */
2190 extern gdb::optional
<std::string
> target_fileio_readlink
2191 (struct inferior
*inf
, const char *filename
, int *target_errno
);
2193 /* Read target file FILENAME, in the filesystem as seen by INF. If
2194 INF is NULL, use the filesystem seen by the debugger (GDB or, for
2195 remote targets, the remote stub). The return value will be -1 if
2196 the transfer fails or is not supported; 0 if the object is empty;
2197 or the length of the object otherwise. If a positive value is
2198 returned, a sufficiently large buffer will be allocated using
2199 xmalloc and returned in *BUF_P containing the contents of the
2202 This method should be used for objects sufficiently small to store
2203 in a single xmalloc'd buffer, when no fixed bound on the object's
2204 size is known in advance. */
2205 extern LONGEST
target_fileio_read_alloc (struct inferior
*inf
,
2206 const char *filename
,
2209 /* Read target file FILENAME, in the filesystem as seen by INF. If
2210 INF is NULL, use the filesystem seen by the debugger (GDB or, for
2211 remote targets, the remote stub). The result is NUL-terminated and
2212 returned as a string, allocated using xmalloc. If an error occurs
2213 or the transfer is unsupported, NULL is returned. Empty objects
2214 are returned as allocated but empty strings. A warning is issued
2215 if the result contains any embedded NUL bytes. */
2216 extern gdb::unique_xmalloc_ptr
<char> target_fileio_read_stralloc
2217 (struct inferior
*inf
, const char *filename
);
2220 /* Tracepoint-related operations. */
2222 #define target_trace_init() \
2223 (current_top_target ()->trace_init) ()
2225 #define target_download_tracepoint(t) \
2226 (current_top_target ()->download_tracepoint) (t)
2228 #define target_can_download_tracepoint() \
2229 (current_top_target ()->can_download_tracepoint) ()
2231 #define target_download_trace_state_variable(tsv) \
2232 (current_top_target ()->download_trace_state_variable) (tsv)
2234 #define target_enable_tracepoint(loc) \
2235 (current_top_target ()->enable_tracepoint) (loc)
2237 #define target_disable_tracepoint(loc) \
2238 (current_top_target ()->disable_tracepoint) (loc)
2240 #define target_trace_start() \
2241 (current_top_target ()->trace_start) ()
2243 #define target_trace_set_readonly_regions() \
2244 (current_top_target ()->trace_set_readonly_regions) ()
2246 #define target_get_trace_status(ts) \
2247 (current_top_target ()->get_trace_status) (ts)
2249 #define target_get_tracepoint_status(tp,utp) \
2250 (current_top_target ()->get_tracepoint_status) (tp, utp)
2252 #define target_trace_stop() \
2253 (current_top_target ()->trace_stop) ()
2255 #define target_trace_find(type,num,addr1,addr2,tpp) \
2256 (current_top_target ()->trace_find) (\
2257 (type), (num), (addr1), (addr2), (tpp))
2259 #define target_get_trace_state_variable_value(tsv,val) \
2260 (current_top_target ()->get_trace_state_variable_value) ((tsv), (val))
2262 #define target_save_trace_data(filename) \
2263 (current_top_target ()->save_trace_data) (filename)
2265 #define target_upload_tracepoints(utpp) \
2266 (current_top_target ()->upload_tracepoints) (utpp)
2268 #define target_upload_trace_state_variables(utsvp) \
2269 (current_top_target ()->upload_trace_state_variables) (utsvp)
2271 #define target_get_raw_trace_data(buf,offset,len) \
2272 (current_top_target ()->get_raw_trace_data) ((buf), (offset), (len))
2274 #define target_get_min_fast_tracepoint_insn_len() \
2275 (current_top_target ()->get_min_fast_tracepoint_insn_len) ()
2277 #define target_set_disconnected_tracing(val) \
2278 (current_top_target ()->set_disconnected_tracing) (val)
2280 #define target_set_circular_trace_buffer(val) \
2281 (current_top_target ()->set_circular_trace_buffer) (val)
2283 #define target_set_trace_buffer_size(val) \
2284 (current_top_target ()->set_trace_buffer_size) (val)
2286 #define target_set_trace_notes(user,notes,stopnotes) \
2287 (current_top_target ()->set_trace_notes) ((user), (notes), (stopnotes))
2289 #define target_get_tib_address(ptid, addr) \
2290 (current_top_target ()->get_tib_address) ((ptid), (addr))
2292 #define target_set_permissions() \
2293 (current_top_target ()->set_permissions) ()
2295 #define target_static_tracepoint_marker_at(addr, marker) \
2296 (current_top_target ()->static_tracepoint_marker_at) (addr, marker)
2298 #define target_static_tracepoint_markers_by_strid(marker_id) \
2299 (current_top_target ()->static_tracepoint_markers_by_strid) (marker_id)
2301 #define target_traceframe_info() \
2302 (current_top_target ()->traceframe_info) ()
2304 #define target_use_agent(use) \
2305 (current_top_target ()->use_agent) (use)
2307 #define target_can_use_agent() \
2308 (current_top_target ()->can_use_agent) ()
2310 #define target_augmented_libraries_svr4_read() \
2311 (current_top_target ()->augmented_libraries_svr4_read) ()
2313 /* Command logging facility. */
2315 #define target_log_command(p) \
2316 (current_top_target ()->log_command) (p)
2319 extern int target_core_of_thread (ptid_t ptid
);
2321 /* See to_get_unwinder in struct target_ops. */
2322 extern const struct frame_unwind
*target_get_unwinder (void);
2324 /* See to_get_tailcall_unwinder in struct target_ops. */
2325 extern const struct frame_unwind
*target_get_tailcall_unwinder (void);
2327 /* This implements basic memory verification, reading target memory
2328 and performing the comparison here (as opposed to accelerated
2329 verification making use of the qCRC packet, for example). */
2331 extern int simple_verify_memory (struct target_ops
* ops
,
2332 const gdb_byte
*data
,
2333 CORE_ADDR memaddr
, ULONGEST size
);
2335 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range matches
2336 the contents of [DATA,DATA+SIZE). Returns 1 if there's a match, 0
2337 if there's a mismatch, and -1 if an error is encountered while
2338 reading memory. Throws an error if the functionality is found not
2339 to be supported by the current target. */
2340 int target_verify_memory (const gdb_byte
*data
,
2341 CORE_ADDR memaddr
, ULONGEST size
);
2343 /* Routines for maintenance of the target structures...
2345 add_target: Add a target to the list of all possible targets.
2346 This only makes sense for targets that should be activated using
2347 the "target TARGET_NAME ..." command.
2349 push_target: Make this target the top of the stack of currently used
2350 targets, within its particular stratum of the stack. Result
2351 is 0 if now atop the stack, nonzero if not on top (maybe
2354 unpush_target: Remove this from the stack of currently used targets,
2355 no matter where it is on the list. Returns 0 if no
2356 change, 1 if removed from stack. */
2358 /* Type of callback called when the user activates a target with
2359 "target TARGET_NAME". The callback routine takes the rest of the
2360 parameters from the command, and (if successful) pushes a new
2361 target onto the stack. */
2362 typedef void target_open_ftype (const char *args
, int from_tty
);
2364 /* Add the target described by INFO to the list of possible targets
2365 and add a new command 'target $(INFO->shortname)'. Set COMPLETER
2366 as the command's completer if not NULL. */
2368 extern void add_target (const target_info
&info
,
2369 target_open_ftype
*func
,
2370 completer_ftype
*completer
= NULL
);
2372 /* Adds a command ALIAS for the target described by INFO and marks it
2373 deprecated. This is useful for maintaining backwards compatibility
2374 when renaming targets. */
2376 extern void add_deprecated_target_alias (const target_info
&info
,
2379 extern void push_target (struct target_ops
*);
2381 /* An overload that deletes the target on failure. */
2382 extern void push_target (target_ops_up
&&);
2384 extern int unpush_target (struct target_ops
*);
2386 extern void target_pre_inferior (int);
2388 extern void target_preopen (int);
2390 /* Does whatever cleanup is required to get rid of all pushed targets. */
2391 extern void pop_all_targets (void);
2393 /* Like pop_all_targets, but pops only targets whose stratum is at or
2395 extern void pop_all_targets_at_and_above (enum strata stratum
);
2397 /* Like pop_all_targets, but pops only targets whose stratum is
2398 strictly above ABOVE_STRATUM. */
2399 extern void pop_all_targets_above (enum strata above_stratum
);
2401 extern bool target_is_pushed (target_ops
*t
);
2403 extern CORE_ADDR
target_translate_tls_address (struct objfile
*objfile
,
2406 /* Struct target_section maps address ranges to file sections. It is
2407 mostly used with BFD files, but can be used without (e.g. for handling
2408 raw disks, or files not in formats handled by BFD). */
2410 struct target_section
2412 CORE_ADDR addr
; /* Lowest address in section */
2413 CORE_ADDR endaddr
; /* 1+highest address in section */
2415 struct bfd_section
*the_bfd_section
;
2417 /* The "owner" of the section.
2418 It can be any unique value. It is set by add_target_sections
2419 and used by remove_target_sections.
2420 For example, for executables it is a pointer to exec_bfd and
2421 for shlibs it is the so_list pointer. */
2425 /* Holds an array of target sections. Defined by [SECTIONS..SECTIONS_END[. */
2427 struct target_section_table
2429 struct target_section
*sections
;
2430 struct target_section
*sections_end
;
2433 /* Return the "section" containing the specified address. */
2434 struct target_section
*target_section_by_addr (struct target_ops
*target
,
2437 /* Return the target section table this target (or the targets
2438 beneath) currently manipulate. */
2440 extern struct target_section_table
*target_get_section_table
2441 (struct target_ops
*target
);
2443 /* From mem-break.c */
2445 extern int memory_remove_breakpoint (struct target_ops
*,
2446 struct gdbarch
*, struct bp_target_info
*,
2447 enum remove_bp_reason
);
2449 extern int memory_insert_breakpoint (struct target_ops
*,
2450 struct gdbarch
*, struct bp_target_info
*);
2452 /* Convenience template use to add memory breakpoints support to a
2455 template <typename BaseTarget
>
2456 struct memory_breakpoint_target
: public BaseTarget
2458 int insert_breakpoint (struct gdbarch
*gdbarch
,
2459 struct bp_target_info
*bp_tgt
) override
2460 { return memory_insert_breakpoint (this, gdbarch
, bp_tgt
); }
2462 int remove_breakpoint (struct gdbarch
*gdbarch
,
2463 struct bp_target_info
*bp_tgt
,
2464 enum remove_bp_reason reason
) override
2465 { return memory_remove_breakpoint (this, gdbarch
, bp_tgt
, reason
); }
2468 /* Check whether the memory at the breakpoint's placed address still
2469 contains the expected breakpoint instruction. */
2471 extern int memory_validate_breakpoint (struct gdbarch
*gdbarch
,
2472 struct bp_target_info
*bp_tgt
);
2474 extern int default_memory_remove_breakpoint (struct gdbarch
*,
2475 struct bp_target_info
*);
2477 extern int default_memory_insert_breakpoint (struct gdbarch
*,
2478 struct bp_target_info
*);
2483 extern void initialize_targets (void);
2485 extern void noprocess (void) ATTRIBUTE_NORETURN
;
2487 extern void target_require_runnable (void);
2489 /* Find the target at STRATUM. If no target is at that stratum,
2492 struct target_ops
*find_target_at (enum strata stratum
);
2494 /* Read OS data object of type TYPE from the target, and return it in XML
2495 format. The return value follows the same rules as target_read_stralloc. */
2497 extern gdb::optional
<gdb::char_vector
> target_get_osdata (const char *type
);
2499 /* Stuff that should be shared among the various remote targets. */
2501 /* Debugging level. 0 is off, and non-zero values mean to print some debug
2502 information (higher values, more information). */
2503 extern int remote_debug
;
2505 /* Speed in bits per second, or -1 which means don't mess with the speed. */
2506 extern int baud_rate
;
2508 /* Parity for serial port */
2509 extern int serial_parity
;
2511 /* Timeout limit for response from target. */
2512 extern int remote_timeout
;
2516 /* Set the show memory breakpoints mode to show, and return a
2517 scoped_restore to restore it back to the current value. */
2518 extern scoped_restore_tmpl
<int>
2519 make_scoped_restore_show_memory_breakpoints (int show
);
2521 extern bool may_write_registers
;
2522 extern bool may_write_memory
;
2523 extern bool may_insert_breakpoints
;
2524 extern bool may_insert_tracepoints
;
2525 extern bool may_insert_fast_tracepoints
;
2526 extern bool may_stop
;
2528 extern void update_target_permissions (void);
2531 /* Imported from machine dependent code. */
2533 /* See to_enable_btrace in struct target_ops. */
2534 extern struct btrace_target_info
*
2535 target_enable_btrace (ptid_t ptid
, const struct btrace_config
*);
2537 /* See to_disable_btrace in struct target_ops. */
2538 extern void target_disable_btrace (struct btrace_target_info
*btinfo
);
2540 /* See to_teardown_btrace in struct target_ops. */
2541 extern void target_teardown_btrace (struct btrace_target_info
*btinfo
);
2543 /* See to_read_btrace in struct target_ops. */
2544 extern enum btrace_error
target_read_btrace (struct btrace_data
*,
2545 struct btrace_target_info
*,
2546 enum btrace_read_type
);
2548 /* See to_btrace_conf in struct target_ops. */
2549 extern const struct btrace_config
*
2550 target_btrace_conf (const struct btrace_target_info
*);
2552 /* See to_stop_recording in struct target_ops. */
2553 extern void target_stop_recording (void);
2555 /* See to_save_record in struct target_ops. */
2556 extern void target_save_record (const char *filename
);
2558 /* Query if the target supports deleting the execution log. */
2559 extern int target_supports_delete_record (void);
2561 /* See to_delete_record in struct target_ops. */
2562 extern void target_delete_record (void);
2564 /* See to_record_method. */
2565 extern enum record_method
target_record_method (ptid_t ptid
);
2567 /* See to_record_is_replaying in struct target_ops. */
2568 extern int target_record_is_replaying (ptid_t ptid
);
2570 /* See to_record_will_replay in struct target_ops. */
2571 extern int target_record_will_replay (ptid_t ptid
, int dir
);
2573 /* See to_record_stop_replaying in struct target_ops. */
2574 extern void target_record_stop_replaying (void);
2576 /* See to_goto_record_begin in struct target_ops. */
2577 extern void target_goto_record_begin (void);
2579 /* See to_goto_record_end in struct target_ops. */
2580 extern void target_goto_record_end (void);
2582 /* See to_goto_record in struct target_ops. */
2583 extern void target_goto_record (ULONGEST insn
);
2585 /* See to_insn_history. */
2586 extern void target_insn_history (int size
, gdb_disassembly_flags flags
);
2588 /* See to_insn_history_from. */
2589 extern void target_insn_history_from (ULONGEST from
, int size
,
2590 gdb_disassembly_flags flags
);
2592 /* See to_insn_history_range. */
2593 extern void target_insn_history_range (ULONGEST begin
, ULONGEST end
,
2594 gdb_disassembly_flags flags
);
2596 /* See to_call_history. */
2597 extern void target_call_history (int size
, record_print_flags flags
);
2599 /* See to_call_history_from. */
2600 extern void target_call_history_from (ULONGEST begin
, int size
,
2601 record_print_flags flags
);
2603 /* See to_call_history_range. */
2604 extern void target_call_history_range (ULONGEST begin
, ULONGEST end
,
2605 record_print_flags flags
);
2607 /* See to_prepare_to_generate_core. */
2608 extern void target_prepare_to_generate_core (void);
2610 /* See to_done_generating_core. */
2611 extern void target_done_generating_core (void);
2613 #endif /* !defined (TARGET_H) */