1 /* Interface between GDB and target environments, including files and processes
3 Copyright (C) 1990-2017 Free Software Foundation, Inc.
5 Contributed by Cygnus Support. Written by John Gilmore.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #if !defined (TARGET_H)
30 struct bp_target_info
;
32 struct target_section_table
;
33 struct trace_state_variable
;
37 struct static_tracepoint_marker
;
38 struct traceframe_info
;
43 #include "infrun.h" /* For enum exec_direction_kind. */
44 #include "breakpoint.h" /* For enum bptype. */
45 #include "common/scoped_restore.h"
47 /* This include file defines the interface between the main part
48 of the debugger, and the part which is target-specific, or
49 specific to the communications interface between us and the
52 A TARGET is an interface between the debugger and a particular
53 kind of file or process. Targets can be STACKED in STRATA,
54 so that more than one target can potentially respond to a request.
55 In particular, memory accesses will walk down the stack of targets
56 until they find a target that is interested in handling that particular
57 address. STRATA are artificial boundaries on the stack, within
58 which particular kinds of targets live. Strata exist so that
59 people don't get confused by pushing e.g. a process target and then
60 a file target, and wondering why they can't see the current values
61 of variables any more (the file target is handling them and they
62 never get to the process target). So when you push a file target,
63 it goes into the file stratum, which is always below the process
66 #include "target/target.h"
67 #include "target/resume.h"
68 #include "target/wait.h"
69 #include "target/waitstatus.h"
74 #include "gdb_signals.h"
80 #include "break-common.h" /* For enum target_hw_bp_type. */
84 dummy_stratum
, /* The lowest of the low */
85 file_stratum
, /* Executable files, etc */
86 process_stratum
, /* Executing processes or core dump files */
87 thread_stratum
, /* Executing threads */
88 record_stratum
, /* Support record debugging */
89 arch_stratum
/* Architecture overrides */
92 enum thread_control_capabilities
94 tc_none
= 0, /* Default: can't control thread execution. */
95 tc_schedlock
= 1, /* Can lock the thread scheduler. */
98 /* The structure below stores information about a system call.
99 It is basically used in the "catch syscall" command, and in
100 every function that gives information about a system call.
102 It's also good to mention that its fields represent everything
103 that we currently know about a syscall in GDB. */
106 /* The syscall number. */
109 /* The syscall name. */
113 /* Return a pretty printed form of TARGET_OPTIONS.
114 Space for the result is malloc'd, caller must free. */
115 extern char *target_options_to_string (int target_options
);
117 /* Possible types of events that the inferior handler will have to
119 enum inferior_event_type
121 /* Process a normal inferior event which will result in target_wait
124 /* We are called to do stuff after the inferior stops. */
128 /* Target objects which can be transfered using target_read,
129 target_write, et cetera. */
133 /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */
135 /* SPU target specific transfer. See "spu-tdep.c". */
137 /* Transfer up-to LEN bytes of memory starting at OFFSET. */
138 TARGET_OBJECT_MEMORY
,
139 /* Memory, avoiding GDB's data cache and trusting the executable.
140 Target implementations of to_xfer_partial never need to handle
141 this object, and most callers should not use it. */
142 TARGET_OBJECT_RAW_MEMORY
,
143 /* Memory known to be part of the target's stack. This is cached even
144 if it is not in a region marked as such, since it is known to be
146 TARGET_OBJECT_STACK_MEMORY
,
147 /* Memory known to be part of the target code. This is cached even
148 if it is not in a region marked as such. */
149 TARGET_OBJECT_CODE_MEMORY
,
150 /* Kernel Unwind Table. See "ia64-tdep.c". */
151 TARGET_OBJECT_UNWIND_TABLE
,
152 /* Transfer auxilliary vector. */
154 /* StackGhost cookie. See "sparc-tdep.c". */
155 TARGET_OBJECT_WCOOKIE
,
156 /* Target memory map in XML format. */
157 TARGET_OBJECT_MEMORY_MAP
,
158 /* Flash memory. This object can be used to write contents to
159 a previously erased flash memory. Using it without erasing
160 flash can have unexpected results. Addresses are physical
161 address on target, and not relative to flash start. */
163 /* Available target-specific features, e.g. registers and coprocessors.
164 See "target-descriptions.c". ANNEX should never be empty. */
165 TARGET_OBJECT_AVAILABLE_FEATURES
,
166 /* Currently loaded libraries, in XML format. */
167 TARGET_OBJECT_LIBRARIES
,
168 /* Currently loaded libraries specific for SVR4 systems, in XML format. */
169 TARGET_OBJECT_LIBRARIES_SVR4
,
170 /* Currently loaded libraries specific to AIX systems, in XML format. */
171 TARGET_OBJECT_LIBRARIES_AIX
,
172 /* Get OS specific data. The ANNEX specifies the type (running
173 processes, etc.). The data being transfered is expected to follow
174 the DTD specified in features/osdata.dtd. */
175 TARGET_OBJECT_OSDATA
,
176 /* Extra signal info. Usually the contents of `siginfo_t' on unix
178 TARGET_OBJECT_SIGNAL_INFO
,
179 /* The list of threads that are being debugged. */
180 TARGET_OBJECT_THREADS
,
181 /* Collected static trace data. */
182 TARGET_OBJECT_STATIC_TRACE_DATA
,
183 /* The HP-UX registers (those that can be obtained or modified by using
184 the TT_LWP_RUREGS/TT_LWP_WUREGS ttrace requests). */
185 TARGET_OBJECT_HPUX_UREGS
,
186 /* The HP-UX shared library linkage pointer. ANNEX should be a string
187 image of the code address whose linkage pointer we are looking for.
189 The size of the data transfered is always 8 bytes (the size of an
191 TARGET_OBJECT_HPUX_SOLIB_GOT
,
192 /* Traceframe info, in XML format. */
193 TARGET_OBJECT_TRACEFRAME_INFO
,
194 /* Load maps for FDPIC systems. */
196 /* Darwin dynamic linker info data. */
197 TARGET_OBJECT_DARWIN_DYLD_INFO
,
198 /* OpenVMS Unwind Information Block. */
199 TARGET_OBJECT_OPENVMS_UIB
,
200 /* Branch trace data, in XML format. */
201 TARGET_OBJECT_BTRACE
,
202 /* Branch trace configuration, in XML format. */
203 TARGET_OBJECT_BTRACE_CONF
,
204 /* The pathname of the executable file that was run to create
205 a specified process. ANNEX should be a string representation
206 of the process ID of the process in question, in hexadecimal
208 TARGET_OBJECT_EXEC_FILE
,
209 /* Possible future objects: TARGET_OBJECT_FILE, ... */
212 /* Possible values returned by target_xfer_partial, etc. */
214 enum target_xfer_status
216 /* Some bytes are transferred. */
219 /* No further transfer is possible. */
222 /* The piece of the object requested is unavailable. */
223 TARGET_XFER_UNAVAILABLE
= 2,
225 /* Generic I/O error. Note that it's important that this is '-1',
226 as we still have target_xfer-related code returning hardcoded
228 TARGET_XFER_E_IO
= -1,
230 /* Keep list in sync with target_xfer_status_to_string. */
233 /* Return the string form of STATUS. */
236 target_xfer_status_to_string (enum target_xfer_status status
);
238 /* Enumeration of the kinds of traceframe searches that a target may
239 be able to perform. */
250 typedef struct static_tracepoint_marker
*static_tracepoint_marker_p
;
251 DEF_VEC_P(static_tracepoint_marker_p
);
253 typedef enum target_xfer_status
254 target_xfer_partial_ftype (struct target_ops
*ops
,
255 enum target_object object
,
258 const gdb_byte
*writebuf
,
261 ULONGEST
*xfered_len
);
263 enum target_xfer_status
264 raw_memory_xfer_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
265 const gdb_byte
*writebuf
, ULONGEST memaddr
,
266 LONGEST len
, ULONGEST
*xfered_len
);
268 /* Request that OPS transfer up to LEN addressable units of the target's
269 OBJECT. When reading from a memory object, the size of an addressable unit
270 is architecture dependent and can be found using
271 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is 1
272 byte long. BUF should point to a buffer large enough to hold the read data,
273 taking into account the addressable unit size. The OFFSET, for a seekable
274 object, specifies the starting point. The ANNEX can be used to provide
275 additional data-specific information to the target.
277 Return the number of addressable units actually transferred, or a negative
278 error code (an 'enum target_xfer_error' value) if the transfer is not
279 supported or otherwise fails. Return of a positive value less than
280 LEN indicates that no further transfer is possible. Unlike the raw
281 to_xfer_partial interface, callers of these functions do not need
282 to retry partial transfers. */
284 extern LONGEST
target_read (struct target_ops
*ops
,
285 enum target_object object
,
286 const char *annex
, gdb_byte
*buf
,
287 ULONGEST offset
, LONGEST len
);
289 struct memory_read_result
291 memory_read_result (ULONGEST begin_
, ULONGEST end_
,
292 gdb::unique_xmalloc_ptr
<gdb_byte
> &&data_
)
295 data (std::move (data_
))
299 ~memory_read_result () = default;
301 memory_read_result (memory_read_result
&&other
) = default;
303 DISABLE_COPY_AND_ASSIGN (memory_read_result
);
305 /* First address that was read. */
307 /* Past-the-end address. */
310 gdb::unique_xmalloc_ptr
<gdb_byte
> data
;
313 extern std::vector
<memory_read_result
> read_memory_robust
314 (struct target_ops
*ops
, const ULONGEST offset
, const LONGEST len
);
316 /* Request that OPS transfer up to LEN addressable units from BUF to the
317 target's OBJECT. When writing to a memory object, the addressable unit
318 size is architecture dependent and can be found using
319 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is 1
320 byte long. The OFFSET, for a seekable object, specifies the starting point.
321 The ANNEX can be used to provide additional data-specific information to
324 Return the number of addressable units actually transferred, or a negative
325 error code (an 'enum target_xfer_status' value) if the transfer is not
326 supported or otherwise fails. Return of a positive value less than
327 LEN indicates that no further transfer is possible. Unlike the raw
328 to_xfer_partial interface, callers of these functions do not need to
329 retry partial transfers. */
331 extern LONGEST
target_write (struct target_ops
*ops
,
332 enum target_object object
,
333 const char *annex
, const gdb_byte
*buf
,
334 ULONGEST offset
, LONGEST len
);
336 /* Similar to target_write, except that it also calls PROGRESS with
337 the number of bytes written and the opaque BATON after every
338 successful partial write (and before the first write). This is
339 useful for progress reporting and user interaction while writing
340 data. To abort the transfer, the progress callback can throw an
343 LONGEST
target_write_with_progress (struct target_ops
*ops
,
344 enum target_object object
,
345 const char *annex
, const gdb_byte
*buf
,
346 ULONGEST offset
, LONGEST len
,
347 void (*progress
) (ULONGEST
, void *),
350 /* Wrapper to perform a full read of unknown size. OBJECT/ANNEX will
351 be read using OPS. The return value will be -1 if the transfer
352 fails or is not supported; 0 if the object is empty; or the length
353 of the object otherwise. If a positive value is returned, a
354 sufficiently large buffer will be allocated using xmalloc and
355 returned in *BUF_P containing the contents of the object.
357 This method should be used for objects sufficiently small to store
358 in a single xmalloc'd buffer, when no fixed bound on the object's
359 size is known in advance. Don't try to read TARGET_OBJECT_MEMORY
360 through this function. */
362 extern LONGEST
target_read_alloc (struct target_ops
*ops
,
363 enum target_object object
,
364 const char *annex
, gdb_byte
**buf_p
);
366 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
367 returned as a string, allocated using xmalloc. If an error occurs
368 or the transfer is unsupported, NULL is returned. Empty objects
369 are returned as allocated but empty strings. A warning is issued
370 if the result contains any embedded NUL bytes. */
372 extern char *target_read_stralloc (struct target_ops
*ops
,
373 enum target_object object
,
376 /* See target_ops->to_xfer_partial. */
377 extern target_xfer_partial_ftype target_xfer_partial
;
379 /* Wrappers to target read/write that perform memory transfers. They
380 throw an error if the memory transfer fails.
382 NOTE: cagney/2003-10-23: The naming schema is lifted from
383 "frame.h". The parameter order is lifted from get_frame_memory,
384 which in turn lifted it from read_memory. */
386 extern void get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
,
387 gdb_byte
*buf
, LONGEST len
);
388 extern ULONGEST
get_target_memory_unsigned (struct target_ops
*ops
,
389 CORE_ADDR addr
, int len
,
390 enum bfd_endian byte_order
);
392 struct thread_info
; /* fwd decl for parameter list below: */
394 /* The type of the callback to the to_async method. */
396 typedef void async_callback_ftype (enum inferior_event_type event_type
,
399 /* Normally target debug printing is purely type-based. However,
400 sometimes it is necessary to override the debug printing on a
401 per-argument basis. This macro can be used, attribute-style, to
402 name the target debug printing function for a particular method
403 argument. FUNC is the name of the function. The macro's
404 definition is empty because it is only used by the
405 make-target-delegates script. */
407 #define TARGET_DEBUG_PRINTER(FUNC)
409 /* These defines are used to mark target_ops methods. The script
410 make-target-delegates scans these and auto-generates the base
411 method implementations. There are four macros that can be used:
413 1. TARGET_DEFAULT_IGNORE. There is no argument. The base method
414 does nothing. This is only valid if the method return type is
417 2. TARGET_DEFAULT_NORETURN. The argument is a function call, like
418 'tcomplain ()'. The base method simply makes this call, which is
419 assumed not to return.
421 3. TARGET_DEFAULT_RETURN. The argument is a C expression. The
422 base method returns this expression's value.
424 4. TARGET_DEFAULT_FUNC. The argument is the name of a function.
425 make-target-delegates does not generate a base method in this case,
426 but instead uses the argument function as the base method. */
428 #define TARGET_DEFAULT_IGNORE()
429 #define TARGET_DEFAULT_NORETURN(ARG)
430 #define TARGET_DEFAULT_RETURN(ARG)
431 #define TARGET_DEFAULT_FUNC(ARG)
435 struct target_ops
*beneath
; /* To the target under this one. */
436 const char *to_shortname
; /* Name this target type */
437 const char *to_longname
; /* Name for printing */
438 const char *to_doc
; /* Documentation. Does not include trailing
439 newline, and starts with a one-line descrip-
440 tion (probably similar to to_longname). */
441 /* Per-target scratch pad. */
443 /* The open routine takes the rest of the parameters from the
444 command, and (if successful) pushes a new target onto the
445 stack. Targets should supply this routine, if only to provide
447 void (*to_open
) (const char *, int);
448 /* Old targets with a static target vector provide "to_close".
449 New re-entrant targets provide "to_xclose" and that is expected
450 to xfree everything (including the "struct target_ops"). */
451 void (*to_xclose
) (struct target_ops
*targ
);
452 void (*to_close
) (struct target_ops
*);
453 /* Attaches to a process on the target side. Arguments are as
454 passed to the `attach' command by the user. This routine can
455 be called when the target is not on the target-stack, if the
456 target_can_run routine returns 1; in that case, it must push
457 itself onto the stack. Upon exit, the target should be ready
458 for normal operations, and should be ready to deliver the
459 status of the process immediately (without waiting) to an
460 upcoming target_wait call. */
461 void (*to_attach
) (struct target_ops
*ops
, const char *, int);
462 void (*to_post_attach
) (struct target_ops
*, int)
463 TARGET_DEFAULT_IGNORE ();
464 void (*to_detach
) (struct target_ops
*ops
, const char *, int)
465 TARGET_DEFAULT_IGNORE ();
466 void (*to_disconnect
) (struct target_ops
*, const char *, int)
467 TARGET_DEFAULT_NORETURN (tcomplain ());
468 void (*to_resume
) (struct target_ops
*, ptid_t
,
469 int TARGET_DEBUG_PRINTER (target_debug_print_step
),
471 TARGET_DEFAULT_NORETURN (noprocess ());
472 void (*to_commit_resume
) (struct target_ops
*)
473 TARGET_DEFAULT_IGNORE ();
474 ptid_t (*to_wait
) (struct target_ops
*,
475 ptid_t
, struct target_waitstatus
*,
476 int TARGET_DEBUG_PRINTER (target_debug_print_options
))
477 TARGET_DEFAULT_FUNC (default_target_wait
);
478 void (*to_fetch_registers
) (struct target_ops
*, struct regcache
*, int)
479 TARGET_DEFAULT_IGNORE ();
480 void (*to_store_registers
) (struct target_ops
*, struct regcache
*, int)
481 TARGET_DEFAULT_NORETURN (noprocess ());
482 void (*to_prepare_to_store
) (struct target_ops
*, struct regcache
*)
483 TARGET_DEFAULT_NORETURN (noprocess ());
485 void (*to_files_info
) (struct target_ops
*)
486 TARGET_DEFAULT_IGNORE ();
487 int (*to_insert_breakpoint
) (struct target_ops
*, struct gdbarch
*,
488 struct bp_target_info
*)
489 TARGET_DEFAULT_FUNC (memory_insert_breakpoint
);
490 int (*to_remove_breakpoint
) (struct target_ops
*, struct gdbarch
*,
491 struct bp_target_info
*,
492 enum remove_bp_reason
)
493 TARGET_DEFAULT_FUNC (memory_remove_breakpoint
);
495 /* Returns true if the target stopped because it executed a
496 software breakpoint. This is necessary for correct background
497 execution / non-stop mode operation, and for correct PC
498 adjustment on targets where the PC needs to be adjusted when a
499 software breakpoint triggers. In these modes, by the time GDB
500 processes a breakpoint event, the breakpoint may already be
501 done from the target, so GDB needs to be able to tell whether
502 it should ignore the event and whether it should adjust the PC.
503 See adjust_pc_after_break. */
504 int (*to_stopped_by_sw_breakpoint
) (struct target_ops
*)
505 TARGET_DEFAULT_RETURN (0);
506 /* Returns true if the above method is supported. */
507 int (*to_supports_stopped_by_sw_breakpoint
) (struct target_ops
*)
508 TARGET_DEFAULT_RETURN (0);
510 /* Returns true if the target stopped for a hardware breakpoint.
511 Likewise, if the target supports hardware breakpoints, this
512 method is necessary for correct background execution / non-stop
513 mode operation. Even though hardware breakpoints do not
514 require PC adjustment, GDB needs to be able to tell whether the
515 hardware breakpoint event is a delayed event for a breakpoint
516 that is already gone and should thus be ignored. */
517 int (*to_stopped_by_hw_breakpoint
) (struct target_ops
*)
518 TARGET_DEFAULT_RETURN (0);
519 /* Returns true if the above method is supported. */
520 int (*to_supports_stopped_by_hw_breakpoint
) (struct target_ops
*)
521 TARGET_DEFAULT_RETURN (0);
523 int (*to_can_use_hw_breakpoint
) (struct target_ops
*,
524 enum bptype
, int, int)
525 TARGET_DEFAULT_RETURN (0);
526 int (*to_ranged_break_num_registers
) (struct target_ops
*)
527 TARGET_DEFAULT_RETURN (-1);
528 int (*to_insert_hw_breakpoint
) (struct target_ops
*,
529 struct gdbarch
*, struct bp_target_info
*)
530 TARGET_DEFAULT_RETURN (-1);
531 int (*to_remove_hw_breakpoint
) (struct target_ops
*,
532 struct gdbarch
*, struct bp_target_info
*)
533 TARGET_DEFAULT_RETURN (-1);
535 /* Documentation of what the two routines below are expected to do is
536 provided with the corresponding target_* macros. */
537 int (*to_remove_watchpoint
) (struct target_ops
*, CORE_ADDR
, int,
538 enum target_hw_bp_type
, struct expression
*)
539 TARGET_DEFAULT_RETURN (-1);
540 int (*to_insert_watchpoint
) (struct target_ops
*, CORE_ADDR
, int,
541 enum target_hw_bp_type
, struct expression
*)
542 TARGET_DEFAULT_RETURN (-1);
544 int (*to_insert_mask_watchpoint
) (struct target_ops
*,
545 CORE_ADDR
, CORE_ADDR
,
546 enum target_hw_bp_type
)
547 TARGET_DEFAULT_RETURN (1);
548 int (*to_remove_mask_watchpoint
) (struct target_ops
*,
549 CORE_ADDR
, CORE_ADDR
,
550 enum target_hw_bp_type
)
551 TARGET_DEFAULT_RETURN (1);
552 int (*to_stopped_by_watchpoint
) (struct target_ops
*)
553 TARGET_DEFAULT_RETURN (0);
554 int to_have_steppable_watchpoint
;
555 int to_have_continuable_watchpoint
;
556 int (*to_stopped_data_address
) (struct target_ops
*, CORE_ADDR
*)
557 TARGET_DEFAULT_RETURN (0);
558 int (*to_watchpoint_addr_within_range
) (struct target_ops
*,
559 CORE_ADDR
, CORE_ADDR
, int)
560 TARGET_DEFAULT_FUNC (default_watchpoint_addr_within_range
);
562 /* Documentation of this routine is provided with the corresponding
564 int (*to_region_ok_for_hw_watchpoint
) (struct target_ops
*,
566 TARGET_DEFAULT_FUNC (default_region_ok_for_hw_watchpoint
);
568 int (*to_can_accel_watchpoint_condition
) (struct target_ops
*,
571 TARGET_DEFAULT_RETURN (0);
572 int (*to_masked_watch_num_registers
) (struct target_ops
*,
573 CORE_ADDR
, CORE_ADDR
)
574 TARGET_DEFAULT_RETURN (-1);
576 /* Return 1 for sure target can do single step. Return -1 for
577 unknown. Return 0 for target can't do. */
578 int (*to_can_do_single_step
) (struct target_ops
*)
579 TARGET_DEFAULT_RETURN (-1);
581 void (*to_terminal_init
) (struct target_ops
*)
582 TARGET_DEFAULT_IGNORE ();
583 void (*to_terminal_inferior
) (struct target_ops
*)
584 TARGET_DEFAULT_IGNORE ();
585 void (*to_terminal_ours_for_output
) (struct target_ops
*)
586 TARGET_DEFAULT_IGNORE ();
587 void (*to_terminal_ours
) (struct target_ops
*)
588 TARGET_DEFAULT_IGNORE ();
589 void (*to_terminal_info
) (struct target_ops
*, const char *, int)
590 TARGET_DEFAULT_FUNC (default_terminal_info
);
591 void (*to_kill
) (struct target_ops
*)
592 TARGET_DEFAULT_NORETURN (noprocess ());
593 void (*to_load
) (struct target_ops
*, const char *, int)
594 TARGET_DEFAULT_NORETURN (tcomplain ());
595 /* Start an inferior process and set inferior_ptid to its pid.
596 EXEC_FILE is the file to run.
597 ALLARGS is a string containing the arguments to the program.
598 ENV is the environment vector to pass. Errors reported with error().
599 On VxWorks and various standalone systems, we ignore exec_file. */
600 void (*to_create_inferior
) (struct target_ops
*,
601 const char *, const std::string
&,
603 void (*to_post_startup_inferior
) (struct target_ops
*, ptid_t
)
604 TARGET_DEFAULT_IGNORE ();
605 int (*to_insert_fork_catchpoint
) (struct target_ops
*, int)
606 TARGET_DEFAULT_RETURN (1);
607 int (*to_remove_fork_catchpoint
) (struct target_ops
*, int)
608 TARGET_DEFAULT_RETURN (1);
609 int (*to_insert_vfork_catchpoint
) (struct target_ops
*, int)
610 TARGET_DEFAULT_RETURN (1);
611 int (*to_remove_vfork_catchpoint
) (struct target_ops
*, int)
612 TARGET_DEFAULT_RETURN (1);
613 int (*to_follow_fork
) (struct target_ops
*, int, int)
614 TARGET_DEFAULT_FUNC (default_follow_fork
);
615 int (*to_insert_exec_catchpoint
) (struct target_ops
*, int)
616 TARGET_DEFAULT_RETURN (1);
617 int (*to_remove_exec_catchpoint
) (struct target_ops
*, int)
618 TARGET_DEFAULT_RETURN (1);
619 void (*to_follow_exec
) (struct target_ops
*, struct inferior
*, char *)
620 TARGET_DEFAULT_IGNORE ();
621 int (*to_set_syscall_catchpoint
) (struct target_ops
*,
622 int, int, int, int, int *)
623 TARGET_DEFAULT_RETURN (1);
624 int (*to_has_exited
) (struct target_ops
*, int, int, int *)
625 TARGET_DEFAULT_RETURN (0);
626 void (*to_mourn_inferior
) (struct target_ops
*)
627 TARGET_DEFAULT_FUNC (default_mourn_inferior
);
628 /* Note that to_can_run is special and can be invoked on an
629 unpushed target. Targets defining this method must also define
630 to_can_async_p and to_supports_non_stop. */
631 int (*to_can_run
) (struct target_ops
*)
632 TARGET_DEFAULT_RETURN (0);
634 /* Documentation of this routine is provided with the corresponding
636 void (*to_pass_signals
) (struct target_ops
*, int,
637 unsigned char * TARGET_DEBUG_PRINTER (target_debug_print_signals
))
638 TARGET_DEFAULT_IGNORE ();
640 /* Documentation of this routine is provided with the
641 corresponding target_* function. */
642 void (*to_program_signals
) (struct target_ops
*, int,
643 unsigned char * TARGET_DEBUG_PRINTER (target_debug_print_signals
))
644 TARGET_DEFAULT_IGNORE ();
646 int (*to_thread_alive
) (struct target_ops
*, ptid_t ptid
)
647 TARGET_DEFAULT_RETURN (0);
648 void (*to_update_thread_list
) (struct target_ops
*)
649 TARGET_DEFAULT_IGNORE ();
650 const char *(*to_pid_to_str
) (struct target_ops
*, ptid_t
)
651 TARGET_DEFAULT_FUNC (default_pid_to_str
);
652 const char *(*to_extra_thread_info
) (struct target_ops
*, struct thread_info
*)
653 TARGET_DEFAULT_RETURN (NULL
);
654 const char *(*to_thread_name
) (struct target_ops
*, struct thread_info
*)
655 TARGET_DEFAULT_RETURN (NULL
);
656 struct thread_info
*(*to_thread_handle_to_thread_info
) (struct target_ops
*,
659 struct inferior
*inf
)
660 TARGET_DEFAULT_RETURN (NULL
);
661 void (*to_stop
) (struct target_ops
*, ptid_t
)
662 TARGET_DEFAULT_IGNORE ();
663 void (*to_interrupt
) (struct target_ops
*, ptid_t
)
664 TARGET_DEFAULT_IGNORE ();
665 void (*to_pass_ctrlc
) (struct target_ops
*)
666 TARGET_DEFAULT_FUNC (default_target_pass_ctrlc
);
667 void (*to_rcmd
) (struct target_ops
*,
668 const char *command
, struct ui_file
*output
)
669 TARGET_DEFAULT_FUNC (default_rcmd
);
670 char *(*to_pid_to_exec_file
) (struct target_ops
*, int pid
)
671 TARGET_DEFAULT_RETURN (NULL
);
672 void (*to_log_command
) (struct target_ops
*, const char *)
673 TARGET_DEFAULT_IGNORE ();
674 struct target_section_table
*(*to_get_section_table
) (struct target_ops
*)
675 TARGET_DEFAULT_RETURN (NULL
);
676 enum strata to_stratum
;
677 int (*to_has_all_memory
) (struct target_ops
*);
678 int (*to_has_memory
) (struct target_ops
*);
679 int (*to_has_stack
) (struct target_ops
*);
680 int (*to_has_registers
) (struct target_ops
*);
681 int (*to_has_execution
) (struct target_ops
*, ptid_t
);
682 int to_has_thread_control
; /* control thread execution */
683 int to_attach_no_wait
;
684 /* This method must be implemented in some situations. See the
685 comment on 'to_can_run'. */
686 int (*to_can_async_p
) (struct target_ops
*)
687 TARGET_DEFAULT_RETURN (0);
688 int (*to_is_async_p
) (struct target_ops
*)
689 TARGET_DEFAULT_RETURN (0);
690 void (*to_async
) (struct target_ops
*, int)
691 TARGET_DEFAULT_NORETURN (tcomplain ());
692 void (*to_thread_events
) (struct target_ops
*, int)
693 TARGET_DEFAULT_IGNORE ();
694 /* This method must be implemented in some situations. See the
695 comment on 'to_can_run'. */
696 int (*to_supports_non_stop
) (struct target_ops
*)
697 TARGET_DEFAULT_RETURN (0);
698 /* Return true if the target operates in non-stop mode even with
699 "set non-stop off". */
700 int (*to_always_non_stop_p
) (struct target_ops
*)
701 TARGET_DEFAULT_RETURN (0);
702 /* find_memory_regions support method for gcore */
703 int (*to_find_memory_regions
) (struct target_ops
*,
704 find_memory_region_ftype func
, void *data
)
705 TARGET_DEFAULT_FUNC (dummy_find_memory_regions
);
706 /* make_corefile_notes support method for gcore */
707 char * (*to_make_corefile_notes
) (struct target_ops
*, bfd
*, int *)
708 TARGET_DEFAULT_FUNC (dummy_make_corefile_notes
);
709 /* get_bookmark support method for bookmarks */
710 gdb_byte
* (*to_get_bookmark
) (struct target_ops
*, const char *, int)
711 TARGET_DEFAULT_NORETURN (tcomplain ());
712 /* goto_bookmark support method for bookmarks */
713 void (*to_goto_bookmark
) (struct target_ops
*, const gdb_byte
*, int)
714 TARGET_DEFAULT_NORETURN (tcomplain ());
715 /* Return the thread-local address at OFFSET in the
716 thread-local storage for the thread PTID and the shared library
717 or executable file given by OBJFILE. If that block of
718 thread-local storage hasn't been allocated yet, this function
719 may return an error. LOAD_MODULE_ADDR may be zero for statically
720 linked multithreaded inferiors. */
721 CORE_ADDR (*to_get_thread_local_address
) (struct target_ops
*ops
,
723 CORE_ADDR load_module_addr
,
725 TARGET_DEFAULT_NORETURN (generic_tls_error ());
727 /* Request that OPS transfer up to LEN addressable units of the target's
728 OBJECT. When reading from a memory object, the size of an addressable
729 unit is architecture dependent and can be found using
730 gdbarch_addressable_memory_unit_size. Otherwise, an addressable unit is
731 1 byte long. The OFFSET, for a seekable object, specifies the
732 starting point. The ANNEX can be used to provide additional
733 data-specific information to the target.
735 Return the transferred status, error or OK (an
736 'enum target_xfer_status' value). Save the number of addressable units
737 actually transferred in *XFERED_LEN if transfer is successful
738 (TARGET_XFER_OK) or the number unavailable units if the requested
739 data is unavailable (TARGET_XFER_UNAVAILABLE). *XFERED_LEN
740 smaller than LEN does not indicate the end of the object, only
741 the end of the transfer; higher level code should continue
742 transferring if desired. This is handled in target.c.
744 The interface does not support a "retry" mechanism. Instead it
745 assumes that at least one addressable unit will be transfered on each
748 NOTE: cagney/2003-10-17: The current interface can lead to
749 fragmented transfers. Lower target levels should not implement
750 hacks, such as enlarging the transfer, in an attempt to
751 compensate for this. Instead, the target stack should be
752 extended so that it implements supply/collect methods and a
753 look-aside object cache. With that available, the lowest
754 target can safely and freely "push" data up the stack.
756 See target_read and target_write for more information. One,
757 and only one, of readbuf or writebuf must be non-NULL. */
759 enum target_xfer_status (*to_xfer_partial
) (struct target_ops
*ops
,
760 enum target_object object
,
763 const gdb_byte
*writebuf
,
764 ULONGEST offset
, ULONGEST len
,
765 ULONGEST
*xfered_len
)
766 TARGET_DEFAULT_RETURN (TARGET_XFER_E_IO
);
768 /* Return the limit on the size of any single memory transfer
771 ULONGEST (*to_get_memory_xfer_limit
) (struct target_ops
*)
772 TARGET_DEFAULT_RETURN (ULONGEST_MAX
);
774 /* Returns the memory map for the target. A return value of NULL
775 means that no memory map is available. If a memory address
776 does not fall within any returned regions, it's assumed to be
777 RAM. The returned memory regions should not overlap.
779 The order of regions does not matter; target_memory_map will
780 sort regions by starting address. For that reason, this
781 function should not be called directly except via
784 This method should not cache data; if the memory map could
785 change unexpectedly, it should be invalidated, and higher
786 layers will re-fetch it. */
787 VEC(mem_region_s
) *(*to_memory_map
) (struct target_ops
*)
788 TARGET_DEFAULT_RETURN (NULL
);
790 /* Erases the region of flash memory starting at ADDRESS, of
793 Precondition: both ADDRESS and ADDRESS+LENGTH should be aligned
794 on flash block boundaries, as reported by 'to_memory_map'. */
795 void (*to_flash_erase
) (struct target_ops
*,
796 ULONGEST address
, LONGEST length
)
797 TARGET_DEFAULT_NORETURN (tcomplain ());
799 /* Finishes a flash memory write sequence. After this operation
800 all flash memory should be available for writing and the result
801 of reading from areas written by 'to_flash_write' should be
802 equal to what was written. */
803 void (*to_flash_done
) (struct target_ops
*)
804 TARGET_DEFAULT_NORETURN (tcomplain ());
806 /* Describe the architecture-specific features of this target. If
807 OPS doesn't have a description, this should delegate to the
808 "beneath" target. Returns the description found, or NULL if no
809 description was available. */
810 const struct target_desc
*(*to_read_description
) (struct target_ops
*ops
)
811 TARGET_DEFAULT_RETURN (NULL
);
813 /* Build the PTID of the thread on which a given task is running,
814 based on LWP and THREAD. These values are extracted from the
815 task Private_Data section of the Ada Task Control Block, and
816 their interpretation depends on the target. */
817 ptid_t (*to_get_ada_task_ptid
) (struct target_ops
*,
818 long lwp
, long thread
)
819 TARGET_DEFAULT_FUNC (default_get_ada_task_ptid
);
821 /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
822 Return 0 if *READPTR is already at the end of the buffer.
823 Return -1 if there is insufficient buffer for a whole entry.
824 Return 1 if an entry was read into *TYPEP and *VALP. */
825 int (*to_auxv_parse
) (struct target_ops
*ops
, gdb_byte
**readptr
,
826 gdb_byte
*endptr
, CORE_ADDR
*typep
, CORE_ADDR
*valp
)
827 TARGET_DEFAULT_FUNC (default_auxv_parse
);
829 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
830 sequence of bytes in PATTERN with length PATTERN_LEN.
832 The result is 1 if found, 0 if not found, and -1 if there was an error
833 requiring halting of the search (e.g. memory read error).
834 If the pattern is found the address is recorded in FOUND_ADDRP. */
835 int (*to_search_memory
) (struct target_ops
*ops
,
836 CORE_ADDR start_addr
, ULONGEST search_space_len
,
837 const gdb_byte
*pattern
, ULONGEST pattern_len
,
838 CORE_ADDR
*found_addrp
)
839 TARGET_DEFAULT_FUNC (default_search_memory
);
841 /* Can target execute in reverse? */
842 int (*to_can_execute_reverse
) (struct target_ops
*)
843 TARGET_DEFAULT_RETURN (0);
845 /* The direction the target is currently executing. Must be
846 implemented on targets that support reverse execution and async
847 mode. The default simply returns forward execution. */
848 enum exec_direction_kind (*to_execution_direction
) (struct target_ops
*)
849 TARGET_DEFAULT_FUNC (default_execution_direction
);
851 /* Does this target support debugging multiple processes
853 int (*to_supports_multi_process
) (struct target_ops
*)
854 TARGET_DEFAULT_RETURN (0);
856 /* Does this target support enabling and disabling tracepoints while a trace
857 experiment is running? */
858 int (*to_supports_enable_disable_tracepoint
) (struct target_ops
*)
859 TARGET_DEFAULT_RETURN (0);
861 /* Does this target support disabling address space randomization? */
862 int (*to_supports_disable_randomization
) (struct target_ops
*);
864 /* Does this target support the tracenz bytecode for string collection? */
865 int (*to_supports_string_tracing
) (struct target_ops
*)
866 TARGET_DEFAULT_RETURN (0);
868 /* Does this target support evaluation of breakpoint conditions on its
870 int (*to_supports_evaluation_of_breakpoint_conditions
) (struct target_ops
*)
871 TARGET_DEFAULT_RETURN (0);
873 /* Does this target support evaluation of breakpoint commands on its
875 int (*to_can_run_breakpoint_commands
) (struct target_ops
*)
876 TARGET_DEFAULT_RETURN (0);
878 /* Determine current architecture of thread PTID.
880 The target is supposed to determine the architecture of the code where
881 the target is currently stopped at (on Cell, if a target is in spu_run,
882 to_thread_architecture would return SPU, otherwise PPC32 or PPC64).
883 This is architecture used to perform decr_pc_after_break adjustment,
884 and also determines the frame architecture of the innermost frame.
885 ptrace operations need to operate according to target_gdbarch ().
887 The default implementation always returns target_gdbarch (). */
888 struct gdbarch
*(*to_thread_architecture
) (struct target_ops
*, ptid_t
)
889 TARGET_DEFAULT_FUNC (default_thread_architecture
);
891 /* Determine current address space of thread PTID.
893 The default implementation always returns the inferior's
895 struct address_space
*(*to_thread_address_space
) (struct target_ops
*,
897 TARGET_DEFAULT_FUNC (default_thread_address_space
);
899 /* Target file operations. */
901 /* Return nonzero if the filesystem seen by the current inferior
902 is the local filesystem, zero otherwise. */
903 int (*to_filesystem_is_local
) (struct target_ops
*)
904 TARGET_DEFAULT_RETURN (1);
906 /* Open FILENAME on the target, in the filesystem as seen by INF,
907 using FLAGS and MODE. If INF is NULL, use the filesystem seen
908 by the debugger (GDB or, for remote targets, the remote stub).
909 If WARN_IF_SLOW is nonzero, print a warning message if the file
910 is being accessed over a link that may be slow. Return a
911 target file descriptor, or -1 if an error occurs (and set
913 int (*to_fileio_open
) (struct target_ops
*,
914 struct inferior
*inf
, const char *filename
,
915 int flags
, int mode
, int warn_if_slow
,
918 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
919 Return the number of bytes written, or -1 if an error occurs
920 (and set *TARGET_ERRNO). */
921 int (*to_fileio_pwrite
) (struct target_ops
*,
922 int fd
, const gdb_byte
*write_buf
, int len
,
923 ULONGEST offset
, int *target_errno
);
925 /* Read up to LEN bytes FD on the target into READ_BUF.
926 Return the number of bytes read, or -1 if an error occurs
927 (and set *TARGET_ERRNO). */
928 int (*to_fileio_pread
) (struct target_ops
*,
929 int fd
, gdb_byte
*read_buf
, int len
,
930 ULONGEST offset
, int *target_errno
);
932 /* Get information about the file opened as FD and put it in
933 SB. Return 0 on success, or -1 if an error occurs (and set
935 int (*to_fileio_fstat
) (struct target_ops
*,
936 int fd
, struct stat
*sb
, int *target_errno
);
938 /* Close FD on the target. Return 0, or -1 if an error occurs
939 (and set *TARGET_ERRNO). */
940 int (*to_fileio_close
) (struct target_ops
*, int fd
, int *target_errno
);
942 /* Unlink FILENAME on the target, in the filesystem as seen by
943 INF. If INF is NULL, use the filesystem seen by the debugger
944 (GDB or, for remote targets, the remote stub). Return 0, or
945 -1 if an error occurs (and set *TARGET_ERRNO). */
946 int (*to_fileio_unlink
) (struct target_ops
*,
947 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 null-terminated string allocated via xmalloc,
955 or NULL if an error occurs (and set *TARGET_ERRNO). */
956 char *(*to_fileio_readlink
) (struct target_ops
*,
957 struct inferior
*inf
,
958 const char *filename
,
962 /* Implement the "info proc" command. */
963 void (*to_info_proc
) (struct target_ops
*, const char *,
964 enum info_proc_what
);
966 /* Tracepoint-related operations. */
968 /* Prepare the target for a tracing run. */
969 void (*to_trace_init
) (struct target_ops
*)
970 TARGET_DEFAULT_NORETURN (tcomplain ());
972 /* Send full details of a tracepoint location to the target. */
973 void (*to_download_tracepoint
) (struct target_ops
*,
974 struct bp_location
*location
)
975 TARGET_DEFAULT_NORETURN (tcomplain ());
977 /* Is the target able to download tracepoint locations in current
979 int (*to_can_download_tracepoint
) (struct target_ops
*)
980 TARGET_DEFAULT_RETURN (0);
982 /* Send full details of a trace state variable to the target. */
983 void (*to_download_trace_state_variable
) (struct target_ops
*,
984 struct trace_state_variable
*tsv
)
985 TARGET_DEFAULT_NORETURN (tcomplain ());
987 /* Enable a tracepoint on the target. */
988 void (*to_enable_tracepoint
) (struct target_ops
*,
989 struct bp_location
*location
)
990 TARGET_DEFAULT_NORETURN (tcomplain ());
992 /* Disable a tracepoint on the target. */
993 void (*to_disable_tracepoint
) (struct target_ops
*,
994 struct bp_location
*location
)
995 TARGET_DEFAULT_NORETURN (tcomplain ());
997 /* Inform the target info of memory regions that are readonly
998 (such as text sections), and so it should return data from
999 those rather than look in the trace buffer. */
1000 void (*to_trace_set_readonly_regions
) (struct target_ops
*)
1001 TARGET_DEFAULT_NORETURN (tcomplain ());
1003 /* Start a trace run. */
1004 void (*to_trace_start
) (struct target_ops
*)
1005 TARGET_DEFAULT_NORETURN (tcomplain ());
1007 /* Get the current status of a tracing run. */
1008 int (*to_get_trace_status
) (struct target_ops
*, struct trace_status
*ts
)
1009 TARGET_DEFAULT_RETURN (-1);
1011 void (*to_get_tracepoint_status
) (struct target_ops
*,
1012 struct breakpoint
*tp
,
1013 struct uploaded_tp
*utp
)
1014 TARGET_DEFAULT_NORETURN (tcomplain ());
1016 /* Stop a trace run. */
1017 void (*to_trace_stop
) (struct target_ops
*)
1018 TARGET_DEFAULT_NORETURN (tcomplain ());
1020 /* Ask the target to find a trace frame of the given type TYPE,
1021 using NUM, ADDR1, and ADDR2 as search parameters. Returns the
1022 number of the trace frame, and also the tracepoint number at
1023 TPP. If no trace frame matches, return -1. May throw if the
1025 int (*to_trace_find
) (struct target_ops
*,
1026 enum trace_find_type type
, int num
,
1027 CORE_ADDR addr1
, CORE_ADDR addr2
, int *tpp
)
1028 TARGET_DEFAULT_RETURN (-1);
1030 /* Get the value of the trace state variable number TSV, returning
1031 1 if the value is known and writing the value itself into the
1032 location pointed to by VAL, else returning 0. */
1033 int (*to_get_trace_state_variable_value
) (struct target_ops
*,
1034 int tsv
, LONGEST
*val
)
1035 TARGET_DEFAULT_RETURN (0);
1037 int (*to_save_trace_data
) (struct target_ops
*, const char *filename
)
1038 TARGET_DEFAULT_NORETURN (tcomplain ());
1040 int (*to_upload_tracepoints
) (struct target_ops
*,
1041 struct uploaded_tp
**utpp
)
1042 TARGET_DEFAULT_RETURN (0);
1044 int (*to_upload_trace_state_variables
) (struct target_ops
*,
1045 struct uploaded_tsv
**utsvp
)
1046 TARGET_DEFAULT_RETURN (0);
1048 LONGEST (*to_get_raw_trace_data
) (struct target_ops
*, gdb_byte
*buf
,
1049 ULONGEST offset
, LONGEST len
)
1050 TARGET_DEFAULT_NORETURN (tcomplain ());
1052 /* Get the minimum length of instruction on which a fast tracepoint
1053 may be set on the target. If this operation is unsupported,
1054 return -1. If for some reason the minimum length cannot be
1055 determined, return 0. */
1056 int (*to_get_min_fast_tracepoint_insn_len
) (struct target_ops
*)
1057 TARGET_DEFAULT_RETURN (-1);
1059 /* Set the target's tracing behavior in response to unexpected
1060 disconnection - set VAL to 1 to keep tracing, 0 to stop. */
1061 void (*to_set_disconnected_tracing
) (struct target_ops
*, int val
)
1062 TARGET_DEFAULT_IGNORE ();
1063 void (*to_set_circular_trace_buffer
) (struct target_ops
*, int val
)
1064 TARGET_DEFAULT_IGNORE ();
1065 /* Set the size of trace buffer in the target. */
1066 void (*to_set_trace_buffer_size
) (struct target_ops
*, LONGEST val
)
1067 TARGET_DEFAULT_IGNORE ();
1069 /* Add/change textual notes about the trace run, returning 1 if
1070 successful, 0 otherwise. */
1071 int (*to_set_trace_notes
) (struct target_ops
*,
1072 const char *user
, const char *notes
,
1073 const char *stopnotes
)
1074 TARGET_DEFAULT_RETURN (0);
1076 /* Return the processor core that thread PTID was last seen on.
1077 This information is updated only when:
1078 - update_thread_list is called
1080 If the core cannot be determined -- either for the specified
1081 thread, or right now, or in this debug session, or for this
1082 target -- return -1. */
1083 int (*to_core_of_thread
) (struct target_ops
*, ptid_t ptid
)
1084 TARGET_DEFAULT_RETURN (-1);
1086 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range
1087 matches the contents of [DATA,DATA+SIZE). Returns 1 if there's
1088 a match, 0 if there's a mismatch, and -1 if an error is
1089 encountered while reading memory. */
1090 int (*to_verify_memory
) (struct target_ops
*, const gdb_byte
*data
,
1091 CORE_ADDR memaddr
, ULONGEST size
)
1092 TARGET_DEFAULT_FUNC (default_verify_memory
);
1094 /* Return the address of the start of the Thread Information Block
1095 a Windows OS specific feature. */
1096 int (*to_get_tib_address
) (struct target_ops
*,
1097 ptid_t ptid
, CORE_ADDR
*addr
)
1098 TARGET_DEFAULT_NORETURN (tcomplain ());
1100 /* Send the new settings of write permission variables. */
1101 void (*to_set_permissions
) (struct target_ops
*)
1102 TARGET_DEFAULT_IGNORE ();
1104 /* Look for a static tracepoint marker at ADDR, and fill in MARKER
1105 with its details. Return 1 on success, 0 on failure. */
1106 int (*to_static_tracepoint_marker_at
) (struct target_ops
*, CORE_ADDR
,
1107 struct static_tracepoint_marker
*marker
)
1108 TARGET_DEFAULT_RETURN (0);
1110 /* Return a vector of all tracepoints markers string id ID, or all
1111 markers if ID is NULL. */
1112 VEC(static_tracepoint_marker_p
) *(*to_static_tracepoint_markers_by_strid
) (struct target_ops
*, const char *id
)
1113 TARGET_DEFAULT_NORETURN (tcomplain ());
1115 /* Return a traceframe info object describing the current
1116 traceframe's contents. This method should not cache data;
1117 higher layers take care of caching, invalidating, and
1118 re-fetching when necessary. */
1119 struct traceframe_info
*(*to_traceframe_info
) (struct target_ops
*)
1120 TARGET_DEFAULT_NORETURN (tcomplain ());
1122 /* Ask the target to use or not to use agent according to USE. Return 1
1123 successful, 0 otherwise. */
1124 int (*to_use_agent
) (struct target_ops
*, int use
)
1125 TARGET_DEFAULT_NORETURN (tcomplain ());
1127 /* Is the target able to use agent in current state? */
1128 int (*to_can_use_agent
) (struct target_ops
*)
1129 TARGET_DEFAULT_RETURN (0);
1131 /* Check whether the target supports branch tracing. */
1132 int (*to_supports_btrace
) (struct target_ops
*, enum btrace_format
)
1133 TARGET_DEFAULT_RETURN (0);
1135 /* Enable branch tracing for PTID using CONF configuration.
1136 Return a branch trace target information struct for reading and for
1137 disabling branch trace. */
1138 struct btrace_target_info
*(*to_enable_btrace
) (struct target_ops
*,
1140 const struct btrace_config
*conf
)
1141 TARGET_DEFAULT_NORETURN (tcomplain ());
1143 /* Disable branch tracing and deallocate TINFO. */
1144 void (*to_disable_btrace
) (struct target_ops
*,
1145 struct btrace_target_info
*tinfo
)
1146 TARGET_DEFAULT_NORETURN (tcomplain ());
1148 /* Disable branch tracing and deallocate TINFO. This function is similar
1149 to to_disable_btrace, except that it is called during teardown and is
1150 only allowed to perform actions that are safe. A counter-example would
1151 be attempting to talk to a remote target. */
1152 void (*to_teardown_btrace
) (struct target_ops
*,
1153 struct btrace_target_info
*tinfo
)
1154 TARGET_DEFAULT_NORETURN (tcomplain ());
1156 /* Read branch trace data for the thread indicated by BTINFO into DATA.
1157 DATA is cleared before new trace is added. */
1158 enum btrace_error (*to_read_btrace
) (struct target_ops
*self
,
1159 struct btrace_data
*data
,
1160 struct btrace_target_info
*btinfo
,
1161 enum btrace_read_type type
)
1162 TARGET_DEFAULT_NORETURN (tcomplain ());
1164 /* Get the branch trace configuration. */
1165 const struct btrace_config
*(*to_btrace_conf
) (struct target_ops
*self
,
1166 const struct btrace_target_info
*)
1167 TARGET_DEFAULT_RETURN (NULL
);
1169 /* Current recording method. */
1170 enum record_method (*to_record_method
) (struct target_ops
*, ptid_t ptid
)
1171 TARGET_DEFAULT_RETURN (RECORD_METHOD_NONE
);
1173 /* Stop trace recording. */
1174 void (*to_stop_recording
) (struct target_ops
*)
1175 TARGET_DEFAULT_IGNORE ();
1177 /* Print information about the recording. */
1178 void (*to_info_record
) (struct target_ops
*)
1179 TARGET_DEFAULT_IGNORE ();
1181 /* Save the recorded execution trace into a file. */
1182 void (*to_save_record
) (struct target_ops
*, const char *filename
)
1183 TARGET_DEFAULT_NORETURN (tcomplain ());
1185 /* Delete the recorded execution trace from the current position
1187 void (*to_delete_record
) (struct target_ops
*)
1188 TARGET_DEFAULT_NORETURN (tcomplain ());
1190 /* Query if the record target is currently replaying PTID. */
1191 int (*to_record_is_replaying
) (struct target_ops
*, ptid_t ptid
)
1192 TARGET_DEFAULT_RETURN (0);
1194 /* Query if the record target will replay PTID if it were resumed in
1195 execution direction DIR. */
1196 int (*to_record_will_replay
) (struct target_ops
*, ptid_t ptid
, int dir
)
1197 TARGET_DEFAULT_RETURN (0);
1199 /* Stop replaying. */
1200 void (*to_record_stop_replaying
) (struct target_ops
*)
1201 TARGET_DEFAULT_IGNORE ();
1203 /* Go to the begin of the execution trace. */
1204 void (*to_goto_record_begin
) (struct target_ops
*)
1205 TARGET_DEFAULT_NORETURN (tcomplain ());
1207 /* Go to the end of the execution trace. */
1208 void (*to_goto_record_end
) (struct target_ops
*)
1209 TARGET_DEFAULT_NORETURN (tcomplain ());
1211 /* Go to a specific location in the recorded execution trace. */
1212 void (*to_goto_record
) (struct target_ops
*, ULONGEST insn
)
1213 TARGET_DEFAULT_NORETURN (tcomplain ());
1215 /* Disassemble SIZE instructions in the recorded execution trace from
1216 the current position.
1217 If SIZE < 0, disassemble abs (SIZE) preceding instructions; otherwise,
1218 disassemble SIZE succeeding instructions. */
1219 void (*to_insn_history
) (struct target_ops
*, int size
,
1220 gdb_disassembly_flags flags
)
1221 TARGET_DEFAULT_NORETURN (tcomplain ());
1223 /* Disassemble SIZE instructions in the recorded execution trace around
1225 If SIZE < 0, disassemble abs (SIZE) instructions before FROM; otherwise,
1226 disassemble SIZE instructions after FROM. */
1227 void (*to_insn_history_from
) (struct target_ops
*,
1228 ULONGEST from
, int size
,
1229 gdb_disassembly_flags flags
)
1230 TARGET_DEFAULT_NORETURN (tcomplain ());
1232 /* Disassemble a section of the recorded execution trace from instruction
1233 BEGIN (inclusive) to instruction END (inclusive). */
1234 void (*to_insn_history_range
) (struct target_ops
*,
1235 ULONGEST begin
, ULONGEST end
,
1236 gdb_disassembly_flags flags
)
1237 TARGET_DEFAULT_NORETURN (tcomplain ());
1239 /* Print a function trace of the recorded execution trace.
1240 If SIZE < 0, print abs (SIZE) preceding functions; otherwise, print SIZE
1241 succeeding functions. */
1242 void (*to_call_history
) (struct target_ops
*, int size
, int flags
)
1243 TARGET_DEFAULT_NORETURN (tcomplain ());
1245 /* Print a function trace of the recorded execution trace starting
1247 If SIZE < 0, print abs (SIZE) functions before FROM; otherwise, print
1248 SIZE functions after FROM. */
1249 void (*to_call_history_from
) (struct target_ops
*,
1250 ULONGEST begin
, int size
, int flags
)
1251 TARGET_DEFAULT_NORETURN (tcomplain ());
1253 /* Print a function trace of an execution trace section from function BEGIN
1254 (inclusive) to function END (inclusive). */
1255 void (*to_call_history_range
) (struct target_ops
*,
1256 ULONGEST begin
, ULONGEST end
, int flags
)
1257 TARGET_DEFAULT_NORETURN (tcomplain ());
1259 /* Nonzero if TARGET_OBJECT_LIBRARIES_SVR4 may be read with a
1261 int (*to_augmented_libraries_svr4_read
) (struct target_ops
*)
1262 TARGET_DEFAULT_RETURN (0);
1264 /* Those unwinders are tried before any other arch unwinders. If
1265 SELF doesn't have unwinders, it should delegate to the
1266 "beneath" target. */
1267 const struct frame_unwind
*(*to_get_unwinder
) (struct target_ops
*self
)
1268 TARGET_DEFAULT_RETURN (NULL
);
1270 const struct frame_unwind
*(*to_get_tailcall_unwinder
) (struct target_ops
*self
)
1271 TARGET_DEFAULT_RETURN (NULL
);
1273 /* Prepare to generate a core file. */
1274 void (*to_prepare_to_generate_core
) (struct target_ops
*)
1275 TARGET_DEFAULT_IGNORE ();
1277 /* Cleanup after generating a core file. */
1278 void (*to_done_generating_core
) (struct target_ops
*)
1279 TARGET_DEFAULT_IGNORE ();
1282 /* Need sub-structure for target machine related rather than comm related?
1286 /* Magic number for checking ops size. If a struct doesn't end with this
1287 number, somebody changed the declaration but didn't change all the
1288 places that initialize one. */
1290 #define OPS_MAGIC 3840
1292 /* The ops structure for our "current" target process. This should
1293 never be NULL. If there is no target, it points to the dummy_target. */
1295 extern struct target_ops current_target
;
1297 /* Define easy words for doing these operations on our current target. */
1299 #define target_shortname (current_target.to_shortname)
1300 #define target_longname (current_target.to_longname)
1302 /* Does whatever cleanup is required for a target that we are no
1303 longer going to be calling. This routine is automatically always
1304 called after popping the target off the target stack - the target's
1305 own methods are no longer available through the target vector.
1306 Closing file descriptors and freeing all memory allocated memory are
1307 typical things it should do. */
1309 void target_close (struct target_ops
*targ
);
1311 /* Find the correct target to use for "attach". If a target on the
1312 current stack supports attaching, then it is returned. Otherwise,
1313 the default run target is returned. */
1315 extern struct target_ops
*find_attach_target (void);
1317 /* Find the correct target to use for "run". If a target on the
1318 current stack supports creating a new inferior, then it is
1319 returned. Otherwise, the default run target is returned. */
1321 extern struct target_ops
*find_run_target (void);
1323 /* Some targets don't generate traps when attaching to the inferior,
1324 or their target_attach implementation takes care of the waiting.
1325 These targets must set to_attach_no_wait. */
1327 #define target_attach_no_wait \
1328 (current_target.to_attach_no_wait)
1330 /* The target_attach operation places a process under debugger control,
1331 and stops the process.
1333 This operation provides a target-specific hook that allows the
1334 necessary bookkeeping to be performed after an attach completes. */
1335 #define target_post_attach(pid) \
1336 (*current_target.to_post_attach) (¤t_target, pid)
1338 /* Display a message indicating we're about to detach from the current
1339 inferior process. */
1341 extern void target_announce_detach (int from_tty
);
1343 /* Takes a program previously attached to and detaches it.
1344 The program may resume execution (some targets do, some don't) and will
1345 no longer stop on signals, etc. We better not have left any breakpoints
1346 in the program or it'll die when it hits one. ARGS is arguments
1347 typed by the user (e.g. a signal to send the process). FROM_TTY
1348 says whether to be verbose or not. */
1350 extern void target_detach (const char *, int);
1352 /* Disconnect from the current target without resuming it (leaving it
1353 waiting for a debugger). */
1355 extern void target_disconnect (const char *, int);
1357 /* Resume execution (or prepare for execution) of a target thread,
1358 process or all processes. STEP says whether to hardware
1359 single-step or to run free; SIGGNAL is the signal to be given to
1360 the target, or GDB_SIGNAL_0 for no signal. The caller may not pass
1361 GDB_SIGNAL_DEFAULT. A specific PTID means `step/resume only this
1362 process id'. A wildcard PTID (all threads, or all threads of
1363 process) means `step/resume INFERIOR_PTID, and let other threads
1364 (for which the wildcard PTID matches) resume with their
1365 'thread->suspend.stop_signal' signal (usually GDB_SIGNAL_0) if it
1366 is in "pass" state, or with no signal if in "no pass" state.
1368 In order to efficiently handle batches of resumption requests,
1369 targets may implement this method such that it records the
1370 resumption request, but defers the actual resumption to the
1371 target_commit_resume method implementation. See
1372 target_commit_resume below. */
1373 extern void target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
);
1375 /* Commit a series of resumption requests previously prepared with
1376 target_resume calls.
1378 GDB always calls target_commit_resume after calling target_resume
1379 one or more times. A target may thus use this method in
1380 coordination with the target_resume method to batch target-side
1381 resumption requests. In that case, the target doesn't actually
1382 resume in its target_resume implementation. Instead, it prepares
1383 the resumption in target_resume, and defers the actual resumption
1384 to target_commit_resume. E.g., the remote target uses this to
1385 coalesce multiple resumption requests in a single vCont packet. */
1386 extern void target_commit_resume ();
1388 /* Setup to defer target_commit_resume calls, and reactivate
1389 target_commit_resume on destruction, if it was previously
1391 extern scoped_restore_tmpl
<int> make_scoped_defer_target_commit_resume ();
1393 /* For target_read_memory see target/target.h. */
1395 /* The default target_ops::to_wait implementation. */
1397 extern ptid_t
default_target_wait (struct target_ops
*ops
,
1399 struct target_waitstatus
*status
,
1402 /* Fetch at least register REGNO, or all regs if regno == -1. No result. */
1404 extern void target_fetch_registers (struct regcache
*regcache
, int regno
);
1406 /* Store at least register REGNO, or all regs if REGNO == -1.
1407 It can store as many registers as it wants to, so target_prepare_to_store
1408 must have been previously called. Calls error() if there are problems. */
1410 extern void target_store_registers (struct regcache
*regcache
, int regs
);
1412 /* Get ready to modify the registers array. On machines which store
1413 individual registers, this doesn't need to do anything. On machines
1414 which store all the registers in one fell swoop, this makes sure
1415 that REGISTERS contains all the registers from the program being
1418 #define target_prepare_to_store(regcache) \
1419 (*current_target.to_prepare_to_store) (¤t_target, regcache)
1421 /* Determine current address space of thread PTID. */
1423 struct address_space
*target_thread_address_space (ptid_t
);
1425 /* Implement the "info proc" command. This returns one if the request
1426 was handled, and zero otherwise. It can also throw an exception if
1427 an error was encountered while attempting to handle the
1430 int target_info_proc (const char *, enum info_proc_what
);
1432 /* Returns true if this target can disable address space randomization. */
1434 int target_supports_disable_randomization (void);
1436 /* Returns true if this target can enable and disable tracepoints
1437 while a trace experiment is running. */
1439 #define target_supports_enable_disable_tracepoint() \
1440 (*current_target.to_supports_enable_disable_tracepoint) (¤t_target)
1442 #define target_supports_string_tracing() \
1443 (*current_target.to_supports_string_tracing) (¤t_target)
1445 /* Returns true if this target can handle breakpoint conditions
1448 #define target_supports_evaluation_of_breakpoint_conditions() \
1449 (*current_target.to_supports_evaluation_of_breakpoint_conditions) (¤t_target)
1451 /* Returns true if this target can handle breakpoint commands
1454 #define target_can_run_breakpoint_commands() \
1455 (*current_target.to_can_run_breakpoint_commands) (¤t_target)
1457 extern int target_read_string (CORE_ADDR
, char **, int, int *);
1459 /* For target_read_memory see target/target.h. */
1461 extern int target_read_raw_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
1464 extern int target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
);
1466 extern int target_read_code (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
);
1468 /* For target_write_memory see target/target.h. */
1470 extern int target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
,
1473 /* Fetches the target's memory map. If one is found it is sorted
1474 and returned, after some consistency checking. Otherwise, NULL
1476 VEC(mem_region_s
) *target_memory_map (void);
1478 /* Erases all flash memory regions on the target. */
1479 void flash_erase_command (char *cmd
, int from_tty
);
1481 /* Erase the specified flash region. */
1482 void target_flash_erase (ULONGEST address
, LONGEST length
);
1484 /* Finish a sequence of flash operations. */
1485 void target_flash_done (void);
1487 /* Describes a request for a memory write operation. */
1488 struct memory_write_request
1490 /* Begining address that must be written. */
1492 /* Past-the-end address. */
1494 /* The data to write. */
1496 /* A callback baton for progress reporting for this request. */
1499 typedef struct memory_write_request memory_write_request_s
;
1500 DEF_VEC_O(memory_write_request_s
);
1502 /* Enumeration specifying different flash preservation behaviour. */
1503 enum flash_preserve_mode
1509 /* Write several memory blocks at once. This version can be more
1510 efficient than making several calls to target_write_memory, in
1511 particular because it can optimize accesses to flash memory.
1513 Moreover, this is currently the only memory access function in gdb
1514 that supports writing to flash memory, and it should be used for
1515 all cases where access to flash memory is desirable.
1517 REQUESTS is the vector (see vec.h) of memory_write_request.
1518 PRESERVE_FLASH_P indicates what to do with blocks which must be
1519 erased, but not completely rewritten.
1520 PROGRESS_CB is a function that will be periodically called to provide
1521 feedback to user. It will be called with the baton corresponding
1522 to the request currently being written. It may also be called
1523 with a NULL baton, when preserved flash sectors are being rewritten.
1525 The function returns 0 on success, and error otherwise. */
1526 int target_write_memory_blocks (VEC(memory_write_request_s
) *requests
,
1527 enum flash_preserve_mode preserve_flash_p
,
1528 void (*progress_cb
) (ULONGEST
, void *));
1530 /* Print a line about the current target. */
1532 #define target_files_info() \
1533 (*current_target.to_files_info) (¤t_target)
1535 /* Insert a breakpoint at address BP_TGT->placed_address in
1536 the target machine. Returns 0 for success, and returns non-zero or
1537 throws an error (with a detailed failure reason error code and
1538 message) otherwise. */
1540 extern int target_insert_breakpoint (struct gdbarch
*gdbarch
,
1541 struct bp_target_info
*bp_tgt
);
1543 /* Remove a breakpoint at address BP_TGT->placed_address in the target
1544 machine. Result is 0 for success, non-zero for error. */
1546 extern int target_remove_breakpoint (struct gdbarch
*gdbarch
,
1547 struct bp_target_info
*bp_tgt
,
1548 enum remove_bp_reason reason
);
1550 /* Return true if the target stack has a non-default
1551 "to_terminal_ours" method. */
1553 extern int target_supports_terminal_ours (void);
1555 /* Kill the inferior process. Make it go away. */
1557 extern void target_kill (void);
1559 /* Load an executable file into the target process. This is expected
1560 to not only bring new code into the target process, but also to
1561 update GDB's symbol tables to match.
1563 ARG contains command-line arguments, to be broken down with
1564 buildargv (). The first non-switch argument is the filename to
1565 load, FILE; the second is a number (as parsed by strtoul (..., ...,
1566 0)), which is an offset to apply to the load addresses of FILE's
1567 sections. The target may define switches, or other non-switch
1568 arguments, as it pleases. */
1570 extern void target_load (const char *arg
, int from_tty
);
1572 /* Some targets (such as ttrace-based HPUX) don't allow us to request
1573 notification of inferior events such as fork and vork immediately
1574 after the inferior is created. (This because of how gdb gets an
1575 inferior created via invoking a shell to do it. In such a scenario,
1576 if the shell init file has commands in it, the shell will fork and
1577 exec for each of those commands, and we will see each such fork
1580 Such targets will supply an appropriate definition for this function. */
1582 #define target_post_startup_inferior(ptid) \
1583 (*current_target.to_post_startup_inferior) (¤t_target, ptid)
1585 /* On some targets, we can catch an inferior fork or vfork event when
1586 it occurs. These functions insert/remove an already-created
1587 catchpoint for such events. They return 0 for success, 1 if the
1588 catchpoint type is not supported and -1 for failure. */
1590 #define target_insert_fork_catchpoint(pid) \
1591 (*current_target.to_insert_fork_catchpoint) (¤t_target, pid)
1593 #define target_remove_fork_catchpoint(pid) \
1594 (*current_target.to_remove_fork_catchpoint) (¤t_target, pid)
1596 #define target_insert_vfork_catchpoint(pid) \
1597 (*current_target.to_insert_vfork_catchpoint) (¤t_target, pid)
1599 #define target_remove_vfork_catchpoint(pid) \
1600 (*current_target.to_remove_vfork_catchpoint) (¤t_target, pid)
1602 /* If the inferior forks or vforks, this function will be called at
1603 the next resume in order to perform any bookkeeping and fiddling
1604 necessary to continue debugging either the parent or child, as
1605 requested, and releasing the other. Information about the fork
1606 or vfork event is available via get_last_target_status ().
1607 This function returns 1 if the inferior should not be resumed
1608 (i.e. there is another event pending). */
1610 int target_follow_fork (int follow_child
, int detach_fork
);
1612 /* Handle the target-specific bookkeeping required when the inferior
1613 makes an exec call. INF is the exec'd inferior. */
1615 void target_follow_exec (struct inferior
*inf
, char *execd_pathname
);
1617 /* On some targets, we can catch an inferior exec event when it
1618 occurs. These functions insert/remove an already-created
1619 catchpoint for such events. They return 0 for success, 1 if the
1620 catchpoint type is not supported and -1 for failure. */
1622 #define target_insert_exec_catchpoint(pid) \
1623 (*current_target.to_insert_exec_catchpoint) (¤t_target, pid)
1625 #define target_remove_exec_catchpoint(pid) \
1626 (*current_target.to_remove_exec_catchpoint) (¤t_target, pid)
1630 NEEDED is nonzero if any syscall catch (of any kind) is requested.
1631 If NEEDED is zero, it means the target can disable the mechanism to
1632 catch system calls because there are no more catchpoints of this type.
1634 ANY_COUNT is nonzero if a generic (filter-less) syscall catch is
1635 being requested. In this case, both TABLE_SIZE and TABLE should
1638 TABLE_SIZE is the number of elements in TABLE. It only matters if
1641 TABLE is an array of ints, indexed by syscall number. An element in
1642 this array is nonzero if that syscall should be caught. This argument
1643 only matters if ANY_COUNT is zero.
1645 Return 0 for success, 1 if syscall catchpoints are not supported or -1
1648 #define target_set_syscall_catchpoint(pid, needed, any_count, table_size, table) \
1649 (*current_target.to_set_syscall_catchpoint) (¤t_target, \
1650 pid, needed, any_count, \
1653 /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the
1654 exit code of PID, if any. */
1656 #define target_has_exited(pid,wait_status,exit_status) \
1657 (*current_target.to_has_exited) (¤t_target, \
1658 pid,wait_status,exit_status)
1660 /* The debugger has completed a blocking wait() call. There is now
1661 some process event that must be processed. This function should
1662 be defined by those targets that require the debugger to perform
1663 cleanup or internal state changes in response to the process event. */
1665 /* For target_mourn_inferior see target/target.h. */
1667 /* Does target have enough data to do a run or attach command? */
1669 #define target_can_run(t) \
1670 ((t)->to_can_run) (t)
1672 /* Set list of signals to be handled in the target.
1674 PASS_SIGNALS is an array of size NSIG, indexed by target signal number
1675 (enum gdb_signal). For every signal whose entry in this array is
1676 non-zero, the target is allowed -but not required- to skip reporting
1677 arrival of the signal to the GDB core by returning from target_wait,
1678 and to pass the signal directly to the inferior instead.
1680 However, if the target is hardware single-stepping a thread that is
1681 about to receive a signal, it needs to be reported in any case, even
1682 if mentioned in a previous target_pass_signals call. */
1684 extern void target_pass_signals (int nsig
, unsigned char *pass_signals
);
1686 /* Set list of signals the target may pass to the inferior. This
1687 directly maps to the "handle SIGNAL pass/nopass" setting.
1689 PROGRAM_SIGNALS is an array of size NSIG, indexed by target signal
1690 number (enum gdb_signal). For every signal whose entry in this
1691 array is non-zero, the target is allowed to pass the signal to the
1692 inferior. Signals not present in the array shall be silently
1693 discarded. This does not influence whether to pass signals to the
1694 inferior as a result of a target_resume call. This is useful in
1695 scenarios where the target needs to decide whether to pass or not a
1696 signal to the inferior without GDB core involvement, such as for
1697 example, when detaching (as threads may have been suspended with
1698 pending signals not reported to GDB). */
1700 extern void target_program_signals (int nsig
, unsigned char *program_signals
);
1702 /* Check to see if a thread is still alive. */
1704 extern int target_thread_alive (ptid_t ptid
);
1706 /* Sync the target's threads with GDB's thread list. */
1708 extern void target_update_thread_list (void);
1710 /* Make target stop in a continuable fashion. (For instance, under
1711 Unix, this should act like SIGSTOP). Note that this function is
1712 asynchronous: it does not wait for the target to become stopped
1713 before returning. If this is the behavior you want please use
1714 target_stop_and_wait. */
1716 extern void target_stop (ptid_t ptid
);
1718 /* Interrupt the target just like the user typed a ^C on the
1719 inferior's controlling terminal. (For instance, under Unix, this
1720 should act like SIGINT). This function is asynchronous. */
1722 extern void target_interrupt (ptid_t ptid
);
1724 /* Pass a ^C, as determined to have been pressed by checking the quit
1725 flag, to the target. Normally calls target_interrupt, but remote
1726 targets may take the opportunity to detect the remote side is not
1727 responding and offer to disconnect. */
1729 extern void target_pass_ctrlc (void);
1731 /* The default target_ops::to_pass_ctrlc implementation. Simply calls
1732 target_interrupt. */
1733 extern void default_target_pass_ctrlc (struct target_ops
*ops
);
1735 /* Send the specified COMMAND to the target's monitor
1736 (shell,interpreter) for execution. The result of the query is
1737 placed in OUTBUF. */
1739 #define target_rcmd(command, outbuf) \
1740 (*current_target.to_rcmd) (¤t_target, command, outbuf)
1743 /* Does the target include all of memory, or only part of it? This
1744 determines whether we look up the target chain for other parts of
1745 memory if this target can't satisfy a request. */
1747 extern int target_has_all_memory_1 (void);
1748 #define target_has_all_memory target_has_all_memory_1 ()
1750 /* Does the target include memory? (Dummy targets don't.) */
1752 extern int target_has_memory_1 (void);
1753 #define target_has_memory target_has_memory_1 ()
1755 /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until
1756 we start a process.) */
1758 extern int target_has_stack_1 (void);
1759 #define target_has_stack target_has_stack_1 ()
1761 /* Does the target have registers? (Exec files don't.) */
1763 extern int target_has_registers_1 (void);
1764 #define target_has_registers target_has_registers_1 ()
1766 /* Does the target have execution? Can we make it jump (through
1767 hoops), or pop its stack a few times? This means that the current
1768 target is currently executing; for some targets, that's the same as
1769 whether or not the target is capable of execution, but there are
1770 also targets which can be current while not executing. In that
1771 case this will become true after to_create_inferior or
1774 extern int target_has_execution_1 (ptid_t
);
1776 /* Like target_has_execution_1, but always passes inferior_ptid. */
1778 extern int target_has_execution_current (void);
1780 #define target_has_execution target_has_execution_current ()
1782 /* Default implementations for process_stratum targets. Return true
1783 if there's a selected inferior, false otherwise. */
1785 extern int default_child_has_all_memory (struct target_ops
*ops
);
1786 extern int default_child_has_memory (struct target_ops
*ops
);
1787 extern int default_child_has_stack (struct target_ops
*ops
);
1788 extern int default_child_has_registers (struct target_ops
*ops
);
1789 extern int default_child_has_execution (struct target_ops
*ops
,
1792 /* Can the target support the debugger control of thread execution?
1793 Can it lock the thread scheduler? */
1795 #define target_can_lock_scheduler \
1796 (current_target.to_has_thread_control & tc_schedlock)
1798 /* Controls whether async mode is permitted. */
1799 extern int target_async_permitted
;
1801 /* Can the target support asynchronous execution? */
1802 #define target_can_async_p() (current_target.to_can_async_p (¤t_target))
1804 /* Is the target in asynchronous execution mode? */
1805 #define target_is_async_p() (current_target.to_is_async_p (¤t_target))
1807 /* Enables/disabled async target events. */
1808 extern void target_async (int enable
);
1810 /* Enables/disables thread create and exit events. */
1811 extern void target_thread_events (int enable
);
1813 /* Whether support for controlling the target backends always in
1814 non-stop mode is enabled. */
1815 extern enum auto_boolean target_non_stop_enabled
;
1817 /* Is the target in non-stop mode? Some targets control the inferior
1818 in non-stop mode even with "set non-stop off". Always true if "set
1820 extern int target_is_non_stop_p (void);
1822 #define target_execution_direction() \
1823 (current_target.to_execution_direction (¤t_target))
1825 /* Converts a process id to a string. Usually, the string just contains
1826 `process xyz', but on some systems it may contain
1827 `process xyz thread abc'. */
1829 extern const char *target_pid_to_str (ptid_t ptid
);
1831 extern const char *normal_pid_to_str (ptid_t ptid
);
1833 /* Return a short string describing extra information about PID,
1834 e.g. "sleeping", "runnable", "running on LWP 3". Null return value
1837 #define target_extra_thread_info(TP) \
1838 (current_target.to_extra_thread_info (¤t_target, TP))
1840 /* Return the thread's name, or NULL if the target is unable to determine it.
1841 The returned value must not be freed by the caller. */
1843 extern const char *target_thread_name (struct thread_info
*);
1845 /* Given a pointer to a thread library specific thread handle and
1846 its length, return a pointer to the corresponding thread_info struct. */
1848 extern struct thread_info
*target_thread_handle_to_thread_info
1849 (const gdb_byte
*thread_handle
, int handle_len
, struct inferior
*inf
);
1851 /* Attempts to find the pathname of the executable file
1852 that was run to create a specified process.
1854 The process PID must be stopped when this operation is used.
1856 If the executable file cannot be determined, NULL is returned.
1858 Else, a pointer to a character string containing the pathname
1859 is returned. This string should be copied into a buffer by
1860 the client if the string will not be immediately used, or if
1863 #define target_pid_to_exec_file(pid) \
1864 (current_target.to_pid_to_exec_file) (¤t_target, pid)
1866 /* See the to_thread_architecture description in struct target_ops. */
1868 #define target_thread_architecture(ptid) \
1869 (current_target.to_thread_architecture (¤t_target, ptid))
1872 * Iterator function for target memory regions.
1873 * Calls a callback function once for each memory region 'mapped'
1874 * in the child process. Defined as a simple macro rather than
1875 * as a function macro so that it can be tested for nullity.
1878 #define target_find_memory_regions(FUNC, DATA) \
1879 (current_target.to_find_memory_regions) (¤t_target, FUNC, DATA)
1882 * Compose corefile .note section.
1885 #define target_make_corefile_notes(BFD, SIZE_P) \
1886 (current_target.to_make_corefile_notes) (¤t_target, BFD, SIZE_P)
1888 /* Bookmark interfaces. */
1889 #define target_get_bookmark(ARGS, FROM_TTY) \
1890 (current_target.to_get_bookmark) (¤t_target, ARGS, FROM_TTY)
1892 #define target_goto_bookmark(ARG, FROM_TTY) \
1893 (current_target.to_goto_bookmark) (¤t_target, ARG, FROM_TTY)
1895 /* Hardware watchpoint interfaces. */
1897 /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or
1898 write). Only the INFERIOR_PTID task is being queried. */
1900 #define target_stopped_by_watchpoint() \
1901 ((*current_target.to_stopped_by_watchpoint) (¤t_target))
1903 /* Returns non-zero if the target stopped because it executed a
1904 software breakpoint instruction. */
1906 #define target_stopped_by_sw_breakpoint() \
1907 ((*current_target.to_stopped_by_sw_breakpoint) (¤t_target))
1909 #define target_supports_stopped_by_sw_breakpoint() \
1910 ((*current_target.to_supports_stopped_by_sw_breakpoint) (¤t_target))
1912 #define target_stopped_by_hw_breakpoint() \
1913 ((*current_target.to_stopped_by_hw_breakpoint) (¤t_target))
1915 #define target_supports_stopped_by_hw_breakpoint() \
1916 ((*current_target.to_supports_stopped_by_hw_breakpoint) (¤t_target))
1918 /* Non-zero if we have steppable watchpoints */
1920 #define target_have_steppable_watchpoint \
1921 (current_target.to_have_steppable_watchpoint)
1923 /* Non-zero if we have continuable watchpoints */
1925 #define target_have_continuable_watchpoint \
1926 (current_target.to_have_continuable_watchpoint)
1928 /* Provide defaults for hardware watchpoint functions. */
1930 /* If the *_hw_beakpoint functions have not been defined
1931 elsewhere use the definitions in the target vector. */
1933 /* Returns positive if we can set a hardware watchpoint of type TYPE.
1934 Returns negative if the target doesn't have enough hardware debug
1935 registers available. Return zero if hardware watchpoint of type
1936 TYPE isn't supported. TYPE is one of bp_hardware_watchpoint,
1937 bp_read_watchpoint, bp_write_watchpoint, or bp_hardware_breakpoint.
1938 CNT is the number of such watchpoints used so far, including this
1939 one. OTHERTYPE is the number of watchpoints of other types than
1940 this one used so far. */
1942 #define target_can_use_hardware_watchpoint(TYPE,CNT,OTHERTYPE) \
1943 (*current_target.to_can_use_hw_breakpoint) (¤t_target, \
1944 TYPE, CNT, OTHERTYPE)
1946 /* Returns the number of debug registers needed to watch the given
1947 memory region, or zero if not supported. */
1949 #define target_region_ok_for_hw_watchpoint(addr, len) \
1950 (*current_target.to_region_ok_for_hw_watchpoint) (¤t_target, \
1954 #define target_can_do_single_step() \
1955 (*current_target.to_can_do_single_step) (¤t_target)
1957 /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes.
1958 TYPE is 0 for write, 1 for read, and 2 for read/write accesses.
1959 COND is the expression for its condition, or NULL if there's none.
1960 Returns 0 for success, 1 if the watchpoint type is not supported,
1963 #define target_insert_watchpoint(addr, len, type, cond) \
1964 (*current_target.to_insert_watchpoint) (¤t_target, \
1965 addr, len, type, cond)
1967 #define target_remove_watchpoint(addr, len, type, cond) \
1968 (*current_target.to_remove_watchpoint) (¤t_target, \
1969 addr, len, type, cond)
1971 /* Insert a new masked watchpoint at ADDR using the mask MASK.
1972 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
1973 or hw_access for an access watchpoint. Returns 0 for success, 1 if
1974 masked watchpoints are not supported, -1 for failure. */
1976 extern int target_insert_mask_watchpoint (CORE_ADDR
, CORE_ADDR
,
1977 enum target_hw_bp_type
);
1979 /* Remove a masked watchpoint at ADDR with the mask MASK.
1980 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
1981 or hw_access for an access watchpoint. Returns 0 for success, non-zero
1984 extern int target_remove_mask_watchpoint (CORE_ADDR
, CORE_ADDR
,
1985 enum target_hw_bp_type
);
1987 /* Insert a hardware breakpoint at address BP_TGT->placed_address in
1988 the target machine. Returns 0 for success, and returns non-zero or
1989 throws an error (with a detailed failure reason error code and
1990 message) otherwise. */
1992 #define target_insert_hw_breakpoint(gdbarch, bp_tgt) \
1993 (*current_target.to_insert_hw_breakpoint) (¤t_target, \
1996 #define target_remove_hw_breakpoint(gdbarch, bp_tgt) \
1997 (*current_target.to_remove_hw_breakpoint) (¤t_target, \
2000 /* Return number of debug registers needed for a ranged breakpoint,
2001 or -1 if ranged breakpoints are not supported. */
2003 extern int target_ranged_break_num_registers (void);
2005 /* Return non-zero if target knows the data address which triggered this
2006 target_stopped_by_watchpoint, in such case place it to *ADDR_P. Only the
2007 INFERIOR_PTID task is being queried. */
2008 #define target_stopped_data_address(target, addr_p) \
2009 (*(target)->to_stopped_data_address) (target, addr_p)
2011 /* Return non-zero if ADDR is within the range of a watchpoint spanning
2012 LENGTH bytes beginning at START. */
2013 #define target_watchpoint_addr_within_range(target, addr, start, length) \
2014 (*(target)->to_watchpoint_addr_within_range) (target, addr, start, length)
2016 /* Return non-zero if the target is capable of using hardware to evaluate
2017 the condition expression. In this case, if the condition is false when
2018 the watched memory location changes, execution may continue without the
2019 debugger being notified.
2021 Due to limitations in the hardware implementation, it may be capable of
2022 avoiding triggering the watchpoint in some cases where the condition
2023 expression is false, but may report some false positives as well.
2024 For this reason, GDB will still evaluate the condition expression when
2025 the watchpoint triggers. */
2026 #define target_can_accel_watchpoint_condition(addr, len, type, cond) \
2027 (*current_target.to_can_accel_watchpoint_condition) (¤t_target, \
2028 addr, len, type, cond)
2030 /* Return number of debug registers needed for a masked watchpoint,
2031 -1 if masked watchpoints are not supported or -2 if the given address
2032 and mask combination cannot be used. */
2034 extern int target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
);
2036 /* Target can execute in reverse? */
2037 #define target_can_execute_reverse \
2038 current_target.to_can_execute_reverse (¤t_target)
2040 extern const struct target_desc
*target_read_description (struct target_ops
*);
2042 #define target_get_ada_task_ptid(lwp, tid) \
2043 (*current_target.to_get_ada_task_ptid) (¤t_target, lwp,tid)
2045 /* Utility implementation of searching memory. */
2046 extern int simple_search_memory (struct target_ops
* ops
,
2047 CORE_ADDR start_addr
,
2048 ULONGEST search_space_len
,
2049 const gdb_byte
*pattern
,
2050 ULONGEST pattern_len
,
2051 CORE_ADDR
*found_addrp
);
2053 /* Main entry point for searching memory. */
2054 extern int target_search_memory (CORE_ADDR start_addr
,
2055 ULONGEST search_space_len
,
2056 const gdb_byte
*pattern
,
2057 ULONGEST pattern_len
,
2058 CORE_ADDR
*found_addrp
);
2060 /* Target file operations. */
2062 /* Return nonzero if the filesystem seen by the current inferior
2063 is the local filesystem, zero otherwise. */
2064 #define target_filesystem_is_local() \
2065 current_target.to_filesystem_is_local (¤t_target)
2067 /* Open FILENAME on the target, in the filesystem as seen by INF,
2068 using FLAGS and MODE. If INF is NULL, use the filesystem seen
2069 by the debugger (GDB or, for remote targets, the remote stub).
2070 Return a target file descriptor, or -1 if an error occurs (and
2071 set *TARGET_ERRNO). */
2072 extern int target_fileio_open (struct inferior
*inf
,
2073 const char *filename
, int flags
,
2074 int mode
, int *target_errno
);
2076 /* Like target_fileio_open, but print a warning message if the
2077 file is being accessed over a link that may be slow. */
2078 extern int target_fileio_open_warn_if_slow (struct inferior
*inf
,
2079 const char *filename
,
2084 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
2085 Return the number of bytes written, or -1 if an error occurs
2086 (and set *TARGET_ERRNO). */
2087 extern int target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
2088 ULONGEST offset
, int *target_errno
);
2090 /* Read up to LEN bytes FD on the target into READ_BUF.
2091 Return the number of bytes read, or -1 if an error occurs
2092 (and set *TARGET_ERRNO). */
2093 extern int target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
2094 ULONGEST offset
, int *target_errno
);
2096 /* Get information about the file opened as FD on the target
2097 and put it in SB. Return 0 on success, or -1 if an error
2098 occurs (and set *TARGET_ERRNO). */
2099 extern int target_fileio_fstat (int fd
, struct stat
*sb
,
2102 /* Close FD on the target. Return 0, or -1 if an error occurs
2103 (and set *TARGET_ERRNO). */
2104 extern int target_fileio_close (int fd
, int *target_errno
);
2106 /* Unlink FILENAME on the target, in the filesystem as seen by INF.
2107 If INF is NULL, use the filesystem seen by the debugger (GDB or,
2108 for remote targets, the remote stub). Return 0, or -1 if an error
2109 occurs (and set *TARGET_ERRNO). */
2110 extern int target_fileio_unlink (struct inferior
*inf
,
2111 const char *filename
,
2114 /* Read value of symbolic link FILENAME on the target, in the
2115 filesystem as seen by INF. If INF is NULL, use the filesystem seen
2116 by the debugger (GDB or, for remote targets, the remote stub).
2117 Return a null-terminated string allocated via xmalloc, or NULL if
2118 an error occurs (and set *TARGET_ERRNO). */
2119 extern char *target_fileio_readlink (struct inferior
*inf
,
2120 const char *filename
,
2123 /* Read target file FILENAME, in the filesystem as seen by INF. If
2124 INF is NULL, use the filesystem seen by the debugger (GDB or, for
2125 remote targets, the remote stub). The return value will be -1 if
2126 the transfer fails or is not supported; 0 if the object is empty;
2127 or the length of the object otherwise. If a positive value is
2128 returned, a sufficiently large buffer will be allocated using
2129 xmalloc and returned in *BUF_P containing the contents of the
2132 This method should be used for objects sufficiently small to store
2133 in a single xmalloc'd buffer, when no fixed bound on the object's
2134 size is known in advance. */
2135 extern LONGEST
target_fileio_read_alloc (struct inferior
*inf
,
2136 const char *filename
,
2139 /* Read target file FILENAME, in the filesystem as seen by INF. If
2140 INF is NULL, use the filesystem seen by the debugger (GDB or, for
2141 remote targets, the remote stub). The result is NUL-terminated and
2142 returned as a string, allocated using xmalloc. If an error occurs
2143 or the transfer is unsupported, NULL is returned. Empty objects
2144 are returned as allocated but empty strings. A warning is issued
2145 if the result contains any embedded NUL bytes. */
2146 extern char *target_fileio_read_stralloc (struct inferior
*inf
,
2147 const char *filename
);
2150 /* Tracepoint-related operations. */
2152 #define target_trace_init() \
2153 (*current_target.to_trace_init) (¤t_target)
2155 #define target_download_tracepoint(t) \
2156 (*current_target.to_download_tracepoint) (¤t_target, t)
2158 #define target_can_download_tracepoint() \
2159 (*current_target.to_can_download_tracepoint) (¤t_target)
2161 #define target_download_trace_state_variable(tsv) \
2162 (*current_target.to_download_trace_state_variable) (¤t_target, tsv)
2164 #define target_enable_tracepoint(loc) \
2165 (*current_target.to_enable_tracepoint) (¤t_target, loc)
2167 #define target_disable_tracepoint(loc) \
2168 (*current_target.to_disable_tracepoint) (¤t_target, loc)
2170 #define target_trace_start() \
2171 (*current_target.to_trace_start) (¤t_target)
2173 #define target_trace_set_readonly_regions() \
2174 (*current_target.to_trace_set_readonly_regions) (¤t_target)
2176 #define target_get_trace_status(ts) \
2177 (*current_target.to_get_trace_status) (¤t_target, ts)
2179 #define target_get_tracepoint_status(tp,utp) \
2180 (*current_target.to_get_tracepoint_status) (¤t_target, tp, utp)
2182 #define target_trace_stop() \
2183 (*current_target.to_trace_stop) (¤t_target)
2185 #define target_trace_find(type,num,addr1,addr2,tpp) \
2186 (*current_target.to_trace_find) (¤t_target, \
2187 (type), (num), (addr1), (addr2), (tpp))
2189 #define target_get_trace_state_variable_value(tsv,val) \
2190 (*current_target.to_get_trace_state_variable_value) (¤t_target, \
2193 #define target_save_trace_data(filename) \
2194 (*current_target.to_save_trace_data) (¤t_target, filename)
2196 #define target_upload_tracepoints(utpp) \
2197 (*current_target.to_upload_tracepoints) (¤t_target, utpp)
2199 #define target_upload_trace_state_variables(utsvp) \
2200 (*current_target.to_upload_trace_state_variables) (¤t_target, utsvp)
2202 #define target_get_raw_trace_data(buf,offset,len) \
2203 (*current_target.to_get_raw_trace_data) (¤t_target, \
2204 (buf), (offset), (len))
2206 #define target_get_min_fast_tracepoint_insn_len() \
2207 (*current_target.to_get_min_fast_tracepoint_insn_len) (¤t_target)
2209 #define target_set_disconnected_tracing(val) \
2210 (*current_target.to_set_disconnected_tracing) (¤t_target, val)
2212 #define target_set_circular_trace_buffer(val) \
2213 (*current_target.to_set_circular_trace_buffer) (¤t_target, val)
2215 #define target_set_trace_buffer_size(val) \
2216 (*current_target.to_set_trace_buffer_size) (¤t_target, val)
2218 #define target_set_trace_notes(user,notes,stopnotes) \
2219 (*current_target.to_set_trace_notes) (¤t_target, \
2220 (user), (notes), (stopnotes))
2222 #define target_get_tib_address(ptid, addr) \
2223 (*current_target.to_get_tib_address) (¤t_target, (ptid), (addr))
2225 #define target_set_permissions() \
2226 (*current_target.to_set_permissions) (¤t_target)
2228 #define target_static_tracepoint_marker_at(addr, marker) \
2229 (*current_target.to_static_tracepoint_marker_at) (¤t_target, \
2232 #define target_static_tracepoint_markers_by_strid(marker_id) \
2233 (*current_target.to_static_tracepoint_markers_by_strid) (¤t_target, \
2236 #define target_traceframe_info() \
2237 (*current_target.to_traceframe_info) (¤t_target)
2239 #define target_use_agent(use) \
2240 (*current_target.to_use_agent) (¤t_target, use)
2242 #define target_can_use_agent() \
2243 (*current_target.to_can_use_agent) (¤t_target)
2245 #define target_augmented_libraries_svr4_read() \
2246 (*current_target.to_augmented_libraries_svr4_read) (¤t_target)
2248 /* Command logging facility. */
2250 #define target_log_command(p) \
2251 (*current_target.to_log_command) (¤t_target, p)
2254 extern int target_core_of_thread (ptid_t ptid
);
2256 /* See to_get_unwinder in struct target_ops. */
2257 extern const struct frame_unwind
*target_get_unwinder (void);
2259 /* See to_get_tailcall_unwinder in struct target_ops. */
2260 extern const struct frame_unwind
*target_get_tailcall_unwinder (void);
2262 /* This implements basic memory verification, reading target memory
2263 and performing the comparison here (as opposed to accelerated
2264 verification making use of the qCRC packet, for example). */
2266 extern int simple_verify_memory (struct target_ops
* ops
,
2267 const gdb_byte
*data
,
2268 CORE_ADDR memaddr
, ULONGEST size
);
2270 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range matches
2271 the contents of [DATA,DATA+SIZE). Returns 1 if there's a match, 0
2272 if there's a mismatch, and -1 if an error is encountered while
2273 reading memory. Throws an error if the functionality is found not
2274 to be supported by the current target. */
2275 int target_verify_memory (const gdb_byte
*data
,
2276 CORE_ADDR memaddr
, ULONGEST size
);
2278 /* Routines for maintenance of the target structures...
2280 complete_target_initialization: Finalize a target_ops by filling in
2281 any fields needed by the target implementation. Unnecessary for
2282 targets which are registered via add_target, as this part gets
2285 add_target: Add a target to the list of all possible targets.
2286 This only makes sense for targets that should be activated using
2287 the "target TARGET_NAME ..." command.
2289 push_target: Make this target the top of the stack of currently used
2290 targets, within its particular stratum of the stack. Result
2291 is 0 if now atop the stack, nonzero if not on top (maybe
2294 unpush_target: Remove this from the stack of currently used targets,
2295 no matter where it is on the list. Returns 0 if no
2296 change, 1 if removed from stack. */
2298 extern void add_target (struct target_ops
*);
2300 extern void add_target_with_completer (struct target_ops
*t
,
2301 completer_ftype
*completer
);
2303 extern void complete_target_initialization (struct target_ops
*t
);
2305 /* Adds a command ALIAS for target T and marks it deprecated. This is useful
2306 for maintaining backwards compatibility when renaming targets. */
2308 extern void add_deprecated_target_alias (struct target_ops
*t
,
2311 extern void push_target (struct target_ops
*);
2313 extern int unpush_target (struct target_ops
*);
2315 extern void target_pre_inferior (int);
2317 extern void target_preopen (int);
2319 /* Does whatever cleanup is required to get rid of all pushed targets. */
2320 extern void pop_all_targets (void);
2322 /* Like pop_all_targets, but pops only targets whose stratum is at or
2324 extern void pop_all_targets_at_and_above (enum strata stratum
);
2326 /* Like pop_all_targets, but pops only targets whose stratum is
2327 strictly above ABOVE_STRATUM. */
2328 extern void pop_all_targets_above (enum strata above_stratum
);
2330 extern int target_is_pushed (struct target_ops
*t
);
2332 extern CORE_ADDR
target_translate_tls_address (struct objfile
*objfile
,
2335 /* Struct target_section maps address ranges to file sections. It is
2336 mostly used with BFD files, but can be used without (e.g. for handling
2337 raw disks, or files not in formats handled by BFD). */
2339 struct target_section
2341 CORE_ADDR addr
; /* Lowest address in section */
2342 CORE_ADDR endaddr
; /* 1+highest address in section */
2344 struct bfd_section
*the_bfd_section
;
2346 /* The "owner" of the section.
2347 It can be any unique value. It is set by add_target_sections
2348 and used by remove_target_sections.
2349 For example, for executables it is a pointer to exec_bfd and
2350 for shlibs it is the so_list pointer. */
2354 /* Holds an array of target sections. Defined by [SECTIONS..SECTIONS_END[. */
2356 struct target_section_table
2358 struct target_section
*sections
;
2359 struct target_section
*sections_end
;
2362 /* Return the "section" containing the specified address. */
2363 struct target_section
*target_section_by_addr (struct target_ops
*target
,
2366 /* Return the target section table this target (or the targets
2367 beneath) currently manipulate. */
2369 extern struct target_section_table
*target_get_section_table
2370 (struct target_ops
*target
);
2372 /* From mem-break.c */
2374 extern int memory_remove_breakpoint (struct target_ops
*, struct gdbarch
*,
2375 struct bp_target_info
*,
2376 enum remove_bp_reason
);
2378 extern int memory_insert_breakpoint (struct target_ops
*, struct gdbarch
*,
2379 struct bp_target_info
*);
2381 /* Check whether the memory at the breakpoint's placed address still
2382 contains the expected breakpoint instruction. */
2384 extern int memory_validate_breakpoint (struct gdbarch
*gdbarch
,
2385 struct bp_target_info
*bp_tgt
);
2387 extern int default_memory_remove_breakpoint (struct gdbarch
*,
2388 struct bp_target_info
*);
2390 extern int default_memory_insert_breakpoint (struct gdbarch
*,
2391 struct bp_target_info
*);
2396 extern void initialize_targets (void);
2398 extern void noprocess (void) ATTRIBUTE_NORETURN
;
2400 extern void target_require_runnable (void);
2402 extern struct target_ops
*find_target_beneath (struct target_ops
*);
2404 /* Find the target at STRATUM. If no target is at that stratum,
2407 struct target_ops
*find_target_at (enum strata stratum
);
2409 /* Read OS data object of type TYPE from the target, and return it in
2410 XML format. The result is NUL-terminated and returned as a string,
2411 allocated using xmalloc. If an error occurs or the transfer is
2412 unsupported, NULL is returned. Empty objects are returned as
2413 allocated but empty strings. */
2415 extern char *target_get_osdata (const char *type
);
2418 /* Stuff that should be shared among the various remote targets. */
2420 /* Debugging level. 0 is off, and non-zero values mean to print some debug
2421 information (higher values, more information). */
2422 extern int remote_debug
;
2424 /* Speed in bits per second, or -1 which means don't mess with the speed. */
2425 extern int baud_rate
;
2427 /* Parity for serial port */
2428 extern int serial_parity
;
2430 /* Timeout limit for response from target. */
2431 extern int remote_timeout
;
2435 /* Set the show memory breakpoints mode to show, and return a
2436 scoped_restore to restore it back to the current value. */
2437 extern scoped_restore_tmpl
<int>
2438 make_scoped_restore_show_memory_breakpoints (int show
);
2440 extern int may_write_registers
;
2441 extern int may_write_memory
;
2442 extern int may_insert_breakpoints
;
2443 extern int may_insert_tracepoints
;
2444 extern int may_insert_fast_tracepoints
;
2445 extern int may_stop
;
2447 extern void update_target_permissions (void);
2450 /* Imported from machine dependent code. */
2452 /* See to_supports_btrace in struct target_ops. */
2453 extern int target_supports_btrace (enum btrace_format
);
2455 /* See to_enable_btrace in struct target_ops. */
2456 extern struct btrace_target_info
*
2457 target_enable_btrace (ptid_t ptid
, const struct btrace_config
*);
2459 /* See to_disable_btrace in struct target_ops. */
2460 extern void target_disable_btrace (struct btrace_target_info
*btinfo
);
2462 /* See to_teardown_btrace in struct target_ops. */
2463 extern void target_teardown_btrace (struct btrace_target_info
*btinfo
);
2465 /* See to_read_btrace in struct target_ops. */
2466 extern enum btrace_error
target_read_btrace (struct btrace_data
*,
2467 struct btrace_target_info
*,
2468 enum btrace_read_type
);
2470 /* See to_btrace_conf in struct target_ops. */
2471 extern const struct btrace_config
*
2472 target_btrace_conf (const struct btrace_target_info
*);
2474 /* See to_stop_recording in struct target_ops. */
2475 extern void target_stop_recording (void);
2477 /* See to_save_record in struct target_ops. */
2478 extern void target_save_record (const char *filename
);
2480 /* Query if the target supports deleting the execution log. */
2481 extern int target_supports_delete_record (void);
2483 /* See to_delete_record in struct target_ops. */
2484 extern void target_delete_record (void);
2486 /* See to_record_method. */
2487 extern enum record_method
target_record_method (ptid_t ptid
);
2489 /* See to_record_is_replaying in struct target_ops. */
2490 extern int target_record_is_replaying (ptid_t ptid
);
2492 /* See to_record_will_replay in struct target_ops. */
2493 extern int target_record_will_replay (ptid_t ptid
, int dir
);
2495 /* See to_record_stop_replaying in struct target_ops. */
2496 extern void target_record_stop_replaying (void);
2498 /* See to_goto_record_begin in struct target_ops. */
2499 extern void target_goto_record_begin (void);
2501 /* See to_goto_record_end in struct target_ops. */
2502 extern void target_goto_record_end (void);
2504 /* See to_goto_record in struct target_ops. */
2505 extern void target_goto_record (ULONGEST insn
);
2507 /* See to_insn_history. */
2508 extern void target_insn_history (int size
, gdb_disassembly_flags flags
);
2510 /* See to_insn_history_from. */
2511 extern void target_insn_history_from (ULONGEST from
, int size
,
2512 gdb_disassembly_flags flags
);
2514 /* See to_insn_history_range. */
2515 extern void target_insn_history_range (ULONGEST begin
, ULONGEST end
,
2516 gdb_disassembly_flags flags
);
2518 /* See to_call_history. */
2519 extern void target_call_history (int size
, int flags
);
2521 /* See to_call_history_from. */
2522 extern void target_call_history_from (ULONGEST begin
, int size
, int flags
);
2524 /* See to_call_history_range. */
2525 extern void target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
);
2527 /* See to_prepare_to_generate_core. */
2528 extern void target_prepare_to_generate_core (void);
2530 /* See to_done_generating_core. */
2531 extern void target_done_generating_core (void);
2533 #endif /* !defined (TARGET_H) */