Teach GDB about targets that can tell whether a trap is a breakpoint event
[binutils-gdb.git] / gdb / target.h
1 /* Interface between GDB and target environments, including files and processes
2
3 Copyright (C) 1990-2015 Free Software Foundation, Inc.
4
5 Contributed by Cygnus Support. Written by John Gilmore.
6
7 This file is part of GDB.
8
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.
13
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.
18
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/>. */
21
22 #if !defined (TARGET_H)
23 #define TARGET_H
24
25 struct objfile;
26 struct ui_file;
27 struct mem_attrib;
28 struct target_ops;
29 struct bp_location;
30 struct bp_target_info;
31 struct regcache;
32 struct target_section_table;
33 struct trace_state_variable;
34 struct trace_status;
35 struct uploaded_tsv;
36 struct uploaded_tp;
37 struct static_tracepoint_marker;
38 struct traceframe_info;
39 struct expression;
40 struct dcache_struct;
41
42 #include "infrun.h" /* For enum exec_direction_kind. */
43
44 /* This include file defines the interface between the main part
45 of the debugger, and the part which is target-specific, or
46 specific to the communications interface between us and the
47 target.
48
49 A TARGET is an interface between the debugger and a particular
50 kind of file or process. Targets can be STACKED in STRATA,
51 so that more than one target can potentially respond to a request.
52 In particular, memory accesses will walk down the stack of targets
53 until they find a target that is interested in handling that particular
54 address. STRATA are artificial boundaries on the stack, within
55 which particular kinds of targets live. Strata exist so that
56 people don't get confused by pushing e.g. a process target and then
57 a file target, and wondering why they can't see the current values
58 of variables any more (the file target is handling them and they
59 never get to the process target). So when you push a file target,
60 it goes into the file stratum, which is always below the process
61 stratum. */
62
63 #include "target/target.h"
64 #include "target/resume.h"
65 #include "target/wait.h"
66 #include "target/waitstatus.h"
67 #include "bfd.h"
68 #include "symtab.h"
69 #include "memattr.h"
70 #include "vec.h"
71 #include "gdb_signals.h"
72 #include "btrace.h"
73 #include "command.h"
74
75 enum strata
76 {
77 dummy_stratum, /* The lowest of the low */
78 file_stratum, /* Executable files, etc */
79 process_stratum, /* Executing processes or core dump files */
80 thread_stratum, /* Executing threads */
81 record_stratum, /* Support record debugging */
82 arch_stratum /* Architecture overrides */
83 };
84
85 enum thread_control_capabilities
86 {
87 tc_none = 0, /* Default: can't control thread execution. */
88 tc_schedlock = 1, /* Can lock the thread scheduler. */
89 };
90
91 /* The structure below stores information about a system call.
92 It is basically used in the "catch syscall" command, and in
93 every function that gives information about a system call.
94
95 It's also good to mention that its fields represent everything
96 that we currently know about a syscall in GDB. */
97 struct syscall
98 {
99 /* The syscall number. */
100 int number;
101
102 /* The syscall name. */
103 const char *name;
104 };
105
106 /* Return a pretty printed form of target_waitstatus.
107 Space for the result is malloc'd, caller must free. */
108 extern char *target_waitstatus_to_string (const struct target_waitstatus *);
109
110 /* Return a pretty printed form of TARGET_OPTIONS.
111 Space for the result is malloc'd, caller must free. */
112 extern char *target_options_to_string (int target_options);
113
114 /* Possible types of events that the inferior handler will have to
115 deal with. */
116 enum inferior_event_type
117 {
118 /* Process a normal inferior event which will result in target_wait
119 being called. */
120 INF_REG_EVENT,
121 /* We are called because a timer went off. */
122 INF_TIMER,
123 /* We are called to do stuff after the inferior stops. */
124 INF_EXEC_COMPLETE,
125 /* We are called to do some stuff after the inferior stops, but we
126 are expected to reenter the proceed() and
127 handle_inferior_event() functions. This is used only in case of
128 'step n' like commands. */
129 INF_EXEC_CONTINUE
130 };
131 \f
132 /* Target objects which can be transfered using target_read,
133 target_write, et cetera. */
134
135 enum target_object
136 {
137 /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */
138 TARGET_OBJECT_AVR,
139 /* SPU target specific transfer. See "spu-tdep.c". */
140 TARGET_OBJECT_SPU,
141 /* Transfer up-to LEN bytes of memory starting at OFFSET. */
142 TARGET_OBJECT_MEMORY,
143 /* Memory, avoiding GDB's data cache and trusting the executable.
144 Target implementations of to_xfer_partial never need to handle
145 this object, and most callers should not use it. */
146 TARGET_OBJECT_RAW_MEMORY,
147 /* Memory known to be part of the target's stack. This is cached even
148 if it is not in a region marked as such, since it is known to be
149 "normal" RAM. */
150 TARGET_OBJECT_STACK_MEMORY,
151 /* Memory known to be part of the target code. This is cached even
152 if it is not in a region marked as such. */
153 TARGET_OBJECT_CODE_MEMORY,
154 /* Kernel Unwind Table. See "ia64-tdep.c". */
155 TARGET_OBJECT_UNWIND_TABLE,
156 /* Transfer auxilliary vector. */
157 TARGET_OBJECT_AUXV,
158 /* StackGhost cookie. See "sparc-tdep.c". */
159 TARGET_OBJECT_WCOOKIE,
160 /* Target memory map in XML format. */
161 TARGET_OBJECT_MEMORY_MAP,
162 /* Flash memory. This object can be used to write contents to
163 a previously erased flash memory. Using it without erasing
164 flash can have unexpected results. Addresses are physical
165 address on target, and not relative to flash start. */
166 TARGET_OBJECT_FLASH,
167 /* Available target-specific features, e.g. registers and coprocessors.
168 See "target-descriptions.c". ANNEX should never be empty. */
169 TARGET_OBJECT_AVAILABLE_FEATURES,
170 /* Currently loaded libraries, in XML format. */
171 TARGET_OBJECT_LIBRARIES,
172 /* Currently loaded libraries specific for SVR4 systems, in XML format. */
173 TARGET_OBJECT_LIBRARIES_SVR4,
174 /* Currently loaded libraries specific to AIX systems, in XML format. */
175 TARGET_OBJECT_LIBRARIES_AIX,
176 /* Get OS specific data. The ANNEX specifies the type (running
177 processes, etc.). The data being transfered is expected to follow
178 the DTD specified in features/osdata.dtd. */
179 TARGET_OBJECT_OSDATA,
180 /* Extra signal info. Usually the contents of `siginfo_t' on unix
181 platforms. */
182 TARGET_OBJECT_SIGNAL_INFO,
183 /* The list of threads that are being debugged. */
184 TARGET_OBJECT_THREADS,
185 /* Collected static trace data. */
186 TARGET_OBJECT_STATIC_TRACE_DATA,
187 /* The HP-UX registers (those that can be obtained or modified by using
188 the TT_LWP_RUREGS/TT_LWP_WUREGS ttrace requests). */
189 TARGET_OBJECT_HPUX_UREGS,
190 /* The HP-UX shared library linkage pointer. ANNEX should be a string
191 image of the code address whose linkage pointer we are looking for.
192
193 The size of the data transfered is always 8 bytes (the size of an
194 address on ia64). */
195 TARGET_OBJECT_HPUX_SOLIB_GOT,
196 /* Traceframe info, in XML format. */
197 TARGET_OBJECT_TRACEFRAME_INFO,
198 /* Load maps for FDPIC systems. */
199 TARGET_OBJECT_FDPIC,
200 /* Darwin dynamic linker info data. */
201 TARGET_OBJECT_DARWIN_DYLD_INFO,
202 /* OpenVMS Unwind Information Block. */
203 TARGET_OBJECT_OPENVMS_UIB,
204 /* Branch trace data, in XML format. */
205 TARGET_OBJECT_BTRACE,
206 /* Branch trace configuration, in XML format. */
207 TARGET_OBJECT_BTRACE_CONF
208 /* Possible future objects: TARGET_OBJECT_FILE, ... */
209 };
210
211 /* Possible values returned by target_xfer_partial, etc. */
212
213 enum target_xfer_status
214 {
215 /* Some bytes are transferred. */
216 TARGET_XFER_OK = 1,
217
218 /* No further transfer is possible. */
219 TARGET_XFER_EOF = 0,
220
221 /* The piece of the object requested is unavailable. */
222 TARGET_XFER_UNAVAILABLE = 2,
223
224 /* Generic I/O error. Note that it's important that this is '-1',
225 as we still have target_xfer-related code returning hardcoded
226 '-1' on error. */
227 TARGET_XFER_E_IO = -1,
228
229 /* Keep list in sync with target_xfer_status_to_string. */
230 };
231
232 /* Return the string form of STATUS. */
233
234 extern const char *
235 target_xfer_status_to_string (enum target_xfer_status status);
236
237 /* Enumeration of the kinds of traceframe searches that a target may
238 be able to perform. */
239
240 enum trace_find_type
241 {
242 tfind_number,
243 tfind_pc,
244 tfind_tp,
245 tfind_range,
246 tfind_outside,
247 };
248
249 typedef struct static_tracepoint_marker *static_tracepoint_marker_p;
250 DEF_VEC_P(static_tracepoint_marker_p);
251
252 typedef enum target_xfer_status
253 target_xfer_partial_ftype (struct target_ops *ops,
254 enum target_object object,
255 const char *annex,
256 gdb_byte *readbuf,
257 const gdb_byte *writebuf,
258 ULONGEST offset,
259 ULONGEST len,
260 ULONGEST *xfered_len);
261
262 /* Request that OPS transfer up to LEN 8-bit bytes of the target's
263 OBJECT. The OFFSET, for a seekable object, specifies the
264 starting point. The ANNEX can be used to provide additional
265 data-specific information to the target.
266
267 Return the number of bytes actually transfered, or a negative error
268 code (an 'enum target_xfer_error' value) if the transfer is not
269 supported or otherwise fails. Return of a positive value less than
270 LEN indicates that no further transfer is possible. Unlike the raw
271 to_xfer_partial interface, callers of these functions do not need
272 to retry partial transfers. */
273
274 extern LONGEST target_read (struct target_ops *ops,
275 enum target_object object,
276 const char *annex, gdb_byte *buf,
277 ULONGEST offset, LONGEST len);
278
279 struct memory_read_result
280 {
281 /* First address that was read. */
282 ULONGEST begin;
283 /* Past-the-end address. */
284 ULONGEST end;
285 /* The data. */
286 gdb_byte *data;
287 };
288 typedef struct memory_read_result memory_read_result_s;
289 DEF_VEC_O(memory_read_result_s);
290
291 extern void free_memory_read_result_vector (void *);
292
293 extern VEC(memory_read_result_s)* read_memory_robust (struct target_ops *ops,
294 ULONGEST offset,
295 LONGEST len);
296
297 extern LONGEST target_write (struct target_ops *ops,
298 enum target_object object,
299 const char *annex, const gdb_byte *buf,
300 ULONGEST offset, LONGEST len);
301
302 /* Similar to target_write, except that it also calls PROGRESS with
303 the number of bytes written and the opaque BATON after every
304 successful partial write (and before the first write). This is
305 useful for progress reporting and user interaction while writing
306 data. To abort the transfer, the progress callback can throw an
307 exception. */
308
309 LONGEST target_write_with_progress (struct target_ops *ops,
310 enum target_object object,
311 const char *annex, const gdb_byte *buf,
312 ULONGEST offset, LONGEST len,
313 void (*progress) (ULONGEST, void *),
314 void *baton);
315
316 /* Wrapper to perform a full read of unknown size. OBJECT/ANNEX will
317 be read using OPS. The return value will be -1 if the transfer
318 fails or is not supported; 0 if the object is empty; or the length
319 of the object otherwise. If a positive value is returned, a
320 sufficiently large buffer will be allocated using xmalloc and
321 returned in *BUF_P containing the contents of the object.
322
323 This method should be used for objects sufficiently small to store
324 in a single xmalloc'd buffer, when no fixed bound on the object's
325 size is known in advance. Don't try to read TARGET_OBJECT_MEMORY
326 through this function. */
327
328 extern LONGEST target_read_alloc (struct target_ops *ops,
329 enum target_object object,
330 const char *annex, gdb_byte **buf_p);
331
332 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
333 returned as a string, allocated using xmalloc. If an error occurs
334 or the transfer is unsupported, NULL is returned. Empty objects
335 are returned as allocated but empty strings. A warning is issued
336 if the result contains any embedded NUL bytes. */
337
338 extern char *target_read_stralloc (struct target_ops *ops,
339 enum target_object object,
340 const char *annex);
341
342 /* See target_ops->to_xfer_partial. */
343 extern target_xfer_partial_ftype target_xfer_partial;
344
345 /* Wrappers to target read/write that perform memory transfers. They
346 throw an error if the memory transfer fails.
347
348 NOTE: cagney/2003-10-23: The naming schema is lifted from
349 "frame.h". The parameter order is lifted from get_frame_memory,
350 which in turn lifted it from read_memory. */
351
352 extern void get_target_memory (struct target_ops *ops, CORE_ADDR addr,
353 gdb_byte *buf, LONGEST len);
354 extern ULONGEST get_target_memory_unsigned (struct target_ops *ops,
355 CORE_ADDR addr, int len,
356 enum bfd_endian byte_order);
357 \f
358 struct thread_info; /* fwd decl for parameter list below: */
359
360 /* The type of the callback to the to_async method. */
361
362 typedef void async_callback_ftype (enum inferior_event_type event_type,
363 void *context);
364
365 /* Normally target debug printing is purely type-based. However,
366 sometimes it is necessary to override the debug printing on a
367 per-argument basis. This macro can be used, attribute-style, to
368 name the target debug printing function for a particular method
369 argument. FUNC is the name of the function. The macro's
370 definition is empty because it is only used by the
371 make-target-delegates script. */
372
373 #define TARGET_DEBUG_PRINTER(FUNC)
374
375 /* These defines are used to mark target_ops methods. The script
376 make-target-delegates scans these and auto-generates the base
377 method implementations. There are four macros that can be used:
378
379 1. TARGET_DEFAULT_IGNORE. There is no argument. The base method
380 does nothing. This is only valid if the method return type is
381 'void'.
382
383 2. TARGET_DEFAULT_NORETURN. The argument is a function call, like
384 'tcomplain ()'. The base method simply makes this call, which is
385 assumed not to return.
386
387 3. TARGET_DEFAULT_RETURN. The argument is a C expression. The
388 base method returns this expression's value.
389
390 4. TARGET_DEFAULT_FUNC. The argument is the name of a function.
391 make-target-delegates does not generate a base method in this case,
392 but instead uses the argument function as the base method. */
393
394 #define TARGET_DEFAULT_IGNORE()
395 #define TARGET_DEFAULT_NORETURN(ARG)
396 #define TARGET_DEFAULT_RETURN(ARG)
397 #define TARGET_DEFAULT_FUNC(ARG)
398
399 struct target_ops
400 {
401 struct target_ops *beneath; /* To the target under this one. */
402 const char *to_shortname; /* Name this target type */
403 const char *to_longname; /* Name for printing */
404 const char *to_doc; /* Documentation. Does not include trailing
405 newline, and starts with a one-line descrip-
406 tion (probably similar to to_longname). */
407 /* Per-target scratch pad. */
408 void *to_data;
409 /* The open routine takes the rest of the parameters from the
410 command, and (if successful) pushes a new target onto the
411 stack. Targets should supply this routine, if only to provide
412 an error message. */
413 void (*to_open) (const char *, int);
414 /* Old targets with a static target vector provide "to_close".
415 New re-entrant targets provide "to_xclose" and that is expected
416 to xfree everything (including the "struct target_ops"). */
417 void (*to_xclose) (struct target_ops *targ);
418 void (*to_close) (struct target_ops *);
419 /* Attaches to a process on the target side. Arguments are as
420 passed to the `attach' command by the user. This routine can
421 be called when the target is not on the target-stack, if the
422 target_can_run routine returns 1; in that case, it must push
423 itself onto the stack. Upon exit, the target should be ready
424 for normal operations, and should be ready to deliver the
425 status of the process immediately (without waiting) to an
426 upcoming target_wait call. */
427 void (*to_attach) (struct target_ops *ops, const char *, int);
428 void (*to_post_attach) (struct target_ops *, int)
429 TARGET_DEFAULT_IGNORE ();
430 void (*to_detach) (struct target_ops *ops, const char *, int)
431 TARGET_DEFAULT_IGNORE ();
432 void (*to_disconnect) (struct target_ops *, const char *, int)
433 TARGET_DEFAULT_NORETURN (tcomplain ());
434 void (*to_resume) (struct target_ops *, ptid_t,
435 int TARGET_DEBUG_PRINTER (target_debug_print_step),
436 enum gdb_signal)
437 TARGET_DEFAULT_NORETURN (noprocess ());
438 ptid_t (*to_wait) (struct target_ops *,
439 ptid_t, struct target_waitstatus *,
440 int TARGET_DEBUG_PRINTER (target_debug_print_options))
441 TARGET_DEFAULT_NORETURN (noprocess ());
442 void (*to_fetch_registers) (struct target_ops *, struct regcache *, int)
443 TARGET_DEFAULT_IGNORE ();
444 void (*to_store_registers) (struct target_ops *, struct regcache *, int)
445 TARGET_DEFAULT_NORETURN (noprocess ());
446 void (*to_prepare_to_store) (struct target_ops *, struct regcache *)
447 TARGET_DEFAULT_NORETURN (noprocess ());
448
449 void (*to_files_info) (struct target_ops *)
450 TARGET_DEFAULT_IGNORE ();
451 int (*to_insert_breakpoint) (struct target_ops *, struct gdbarch *,
452 struct bp_target_info *)
453 TARGET_DEFAULT_FUNC (memory_insert_breakpoint);
454 int (*to_remove_breakpoint) (struct target_ops *, struct gdbarch *,
455 struct bp_target_info *)
456 TARGET_DEFAULT_FUNC (memory_remove_breakpoint);
457
458 /* Returns true if the target stopped because it executed a
459 software breakpoint. This is necessary for correct background
460 execution / non-stop mode operation, and for correct PC
461 adjustment on targets where the PC needs to be adjusted when a
462 software breakpoint triggers. In these modes, by the time GDB
463 processes a breakpoint event, the breakpoint may already be
464 done from the target, so GDB needs to be able to tell whether
465 it should ignore the event and whether it should adjust the PC.
466 See adjust_pc_after_break. */
467 int (*to_stopped_by_sw_breakpoint) (struct target_ops *)
468 TARGET_DEFAULT_RETURN (0);
469 /* Returns true if the above method is supported. */
470 int (*to_supports_stopped_by_sw_breakpoint) (struct target_ops *)
471 TARGET_DEFAULT_RETURN (0);
472
473 /* Returns true if the target stopped for a hardware breakpoint.
474 Likewise, if the target supports hardware breakpoints, this
475 method is necessary for correct background execution / non-stop
476 mode operation. Even though hardware breakpoints do not
477 require PC adjustment, GDB needs to be able to tell whether the
478 hardware breakpoint event is a delayed event for a breakpoint
479 that is already gone and should thus be ignored. */
480 int (*to_stopped_by_hw_breakpoint) (struct target_ops *)
481 TARGET_DEFAULT_RETURN (0);
482 /* Returns true if the above method is supported. */
483 int (*to_supports_stopped_by_hw_breakpoint) (struct target_ops *)
484 TARGET_DEFAULT_RETURN (0);
485
486 int (*to_can_use_hw_breakpoint) (struct target_ops *, int, int, int)
487 TARGET_DEFAULT_RETURN (0);
488 int (*to_ranged_break_num_registers) (struct target_ops *)
489 TARGET_DEFAULT_RETURN (-1);
490 int (*to_insert_hw_breakpoint) (struct target_ops *,
491 struct gdbarch *, struct bp_target_info *)
492 TARGET_DEFAULT_RETURN (-1);
493 int (*to_remove_hw_breakpoint) (struct target_ops *,
494 struct gdbarch *, struct bp_target_info *)
495 TARGET_DEFAULT_RETURN (-1);
496
497 /* Documentation of what the two routines below are expected to do is
498 provided with the corresponding target_* macros. */
499 int (*to_remove_watchpoint) (struct target_ops *,
500 CORE_ADDR, int, int, struct expression *)
501 TARGET_DEFAULT_RETURN (-1);
502 int (*to_insert_watchpoint) (struct target_ops *,
503 CORE_ADDR, int, int, struct expression *)
504 TARGET_DEFAULT_RETURN (-1);
505
506 int (*to_insert_mask_watchpoint) (struct target_ops *,
507 CORE_ADDR, CORE_ADDR, int)
508 TARGET_DEFAULT_RETURN (1);
509 int (*to_remove_mask_watchpoint) (struct target_ops *,
510 CORE_ADDR, CORE_ADDR, int)
511 TARGET_DEFAULT_RETURN (1);
512 int (*to_stopped_by_watchpoint) (struct target_ops *)
513 TARGET_DEFAULT_RETURN (0);
514 int to_have_steppable_watchpoint;
515 int to_have_continuable_watchpoint;
516 int (*to_stopped_data_address) (struct target_ops *, CORE_ADDR *)
517 TARGET_DEFAULT_RETURN (0);
518 int (*to_watchpoint_addr_within_range) (struct target_ops *,
519 CORE_ADDR, CORE_ADDR, int)
520 TARGET_DEFAULT_FUNC (default_watchpoint_addr_within_range);
521
522 /* Documentation of this routine is provided with the corresponding
523 target_* macro. */
524 int (*to_region_ok_for_hw_watchpoint) (struct target_ops *,
525 CORE_ADDR, int)
526 TARGET_DEFAULT_FUNC (default_region_ok_for_hw_watchpoint);
527
528 int (*to_can_accel_watchpoint_condition) (struct target_ops *,
529 CORE_ADDR, int, int,
530 struct expression *)
531 TARGET_DEFAULT_RETURN (0);
532 int (*to_masked_watch_num_registers) (struct target_ops *,
533 CORE_ADDR, CORE_ADDR)
534 TARGET_DEFAULT_RETURN (-1);
535 void (*to_terminal_init) (struct target_ops *)
536 TARGET_DEFAULT_IGNORE ();
537 void (*to_terminal_inferior) (struct target_ops *)
538 TARGET_DEFAULT_IGNORE ();
539 void (*to_terminal_ours_for_output) (struct target_ops *)
540 TARGET_DEFAULT_IGNORE ();
541 void (*to_terminal_ours) (struct target_ops *)
542 TARGET_DEFAULT_IGNORE ();
543 void (*to_terminal_info) (struct target_ops *, const char *, int)
544 TARGET_DEFAULT_FUNC (default_terminal_info);
545 void (*to_kill) (struct target_ops *)
546 TARGET_DEFAULT_NORETURN (noprocess ());
547 void (*to_load) (struct target_ops *, const char *, int)
548 TARGET_DEFAULT_NORETURN (tcomplain ());
549 /* Start an inferior process and set inferior_ptid to its pid.
550 EXEC_FILE is the file to run.
551 ALLARGS is a string containing the arguments to the program.
552 ENV is the environment vector to pass. Errors reported with error().
553 On VxWorks and various standalone systems, we ignore exec_file. */
554 void (*to_create_inferior) (struct target_ops *,
555 char *, char *, char **, int);
556 void (*to_post_startup_inferior) (struct target_ops *, ptid_t)
557 TARGET_DEFAULT_IGNORE ();
558 int (*to_insert_fork_catchpoint) (struct target_ops *, int)
559 TARGET_DEFAULT_RETURN (1);
560 int (*to_remove_fork_catchpoint) (struct target_ops *, int)
561 TARGET_DEFAULT_RETURN (1);
562 int (*to_insert_vfork_catchpoint) (struct target_ops *, int)
563 TARGET_DEFAULT_RETURN (1);
564 int (*to_remove_vfork_catchpoint) (struct target_ops *, int)
565 TARGET_DEFAULT_RETURN (1);
566 int (*to_follow_fork) (struct target_ops *, int, int)
567 TARGET_DEFAULT_FUNC (default_follow_fork);
568 int (*to_insert_exec_catchpoint) (struct target_ops *, int)
569 TARGET_DEFAULT_RETURN (1);
570 int (*to_remove_exec_catchpoint) (struct target_ops *, int)
571 TARGET_DEFAULT_RETURN (1);
572 int (*to_set_syscall_catchpoint) (struct target_ops *,
573 int, int, int, int, int *)
574 TARGET_DEFAULT_RETURN (1);
575 int (*to_has_exited) (struct target_ops *, int, int, int *)
576 TARGET_DEFAULT_RETURN (0);
577 void (*to_mourn_inferior) (struct target_ops *)
578 TARGET_DEFAULT_FUNC (default_mourn_inferior);
579 /* Note that to_can_run is special and can be invoked on an
580 unpushed target. Targets defining this method must also define
581 to_can_async_p and to_supports_non_stop. */
582 int (*to_can_run) (struct target_ops *)
583 TARGET_DEFAULT_RETURN (0);
584
585 /* Documentation of this routine is provided with the corresponding
586 target_* macro. */
587 void (*to_pass_signals) (struct target_ops *, int,
588 unsigned char * TARGET_DEBUG_PRINTER (target_debug_print_signals))
589 TARGET_DEFAULT_IGNORE ();
590
591 /* Documentation of this routine is provided with the
592 corresponding target_* function. */
593 void (*to_program_signals) (struct target_ops *, int,
594 unsigned char * TARGET_DEBUG_PRINTER (target_debug_print_signals))
595 TARGET_DEFAULT_IGNORE ();
596
597 int (*to_thread_alive) (struct target_ops *, ptid_t ptid)
598 TARGET_DEFAULT_RETURN (0);
599 void (*to_update_thread_list) (struct target_ops *)
600 TARGET_DEFAULT_IGNORE ();
601 char *(*to_pid_to_str) (struct target_ops *, ptid_t)
602 TARGET_DEFAULT_FUNC (default_pid_to_str);
603 char *(*to_extra_thread_info) (struct target_ops *, struct thread_info *)
604 TARGET_DEFAULT_RETURN (NULL);
605 char *(*to_thread_name) (struct target_ops *, struct thread_info *)
606 TARGET_DEFAULT_RETURN (NULL);
607 void (*to_stop) (struct target_ops *, ptid_t)
608 TARGET_DEFAULT_IGNORE ();
609 void (*to_rcmd) (struct target_ops *,
610 const char *command, struct ui_file *output)
611 TARGET_DEFAULT_FUNC (default_rcmd);
612 char *(*to_pid_to_exec_file) (struct target_ops *, int pid)
613 TARGET_DEFAULT_RETURN (NULL);
614 void (*to_log_command) (struct target_ops *, const char *)
615 TARGET_DEFAULT_IGNORE ();
616 struct target_section_table *(*to_get_section_table) (struct target_ops *)
617 TARGET_DEFAULT_RETURN (NULL);
618 enum strata to_stratum;
619 int (*to_has_all_memory) (struct target_ops *);
620 int (*to_has_memory) (struct target_ops *);
621 int (*to_has_stack) (struct target_ops *);
622 int (*to_has_registers) (struct target_ops *);
623 int (*to_has_execution) (struct target_ops *, ptid_t);
624 int to_has_thread_control; /* control thread execution */
625 int to_attach_no_wait;
626 /* This method must be implemented in some situations. See the
627 comment on 'to_can_run'. */
628 int (*to_can_async_p) (struct target_ops *)
629 TARGET_DEFAULT_RETURN (0);
630 int (*to_is_async_p) (struct target_ops *)
631 TARGET_DEFAULT_RETURN (0);
632 void (*to_async) (struct target_ops *, async_callback_ftype *, void *)
633 TARGET_DEFAULT_NORETURN (tcomplain ());
634 /* This method must be implemented in some situations. See the
635 comment on 'to_can_run'. */
636 int (*to_supports_non_stop) (struct target_ops *)
637 TARGET_DEFAULT_RETURN (0);
638 /* find_memory_regions support method for gcore */
639 int (*to_find_memory_regions) (struct target_ops *,
640 find_memory_region_ftype func, void *data)
641 TARGET_DEFAULT_FUNC (dummy_find_memory_regions);
642 /* make_corefile_notes support method for gcore */
643 char * (*to_make_corefile_notes) (struct target_ops *, bfd *, int *)
644 TARGET_DEFAULT_FUNC (dummy_make_corefile_notes);
645 /* get_bookmark support method for bookmarks */
646 gdb_byte * (*to_get_bookmark) (struct target_ops *, const char *, int)
647 TARGET_DEFAULT_NORETURN (tcomplain ());
648 /* goto_bookmark support method for bookmarks */
649 void (*to_goto_bookmark) (struct target_ops *, const gdb_byte *, int)
650 TARGET_DEFAULT_NORETURN (tcomplain ());
651 /* Return the thread-local address at OFFSET in the
652 thread-local storage for the thread PTID and the shared library
653 or executable file given by OBJFILE. If that block of
654 thread-local storage hasn't been allocated yet, this function
655 may return an error. LOAD_MODULE_ADDR may be zero for statically
656 linked multithreaded inferiors. */
657 CORE_ADDR (*to_get_thread_local_address) (struct target_ops *ops,
658 ptid_t ptid,
659 CORE_ADDR load_module_addr,
660 CORE_ADDR offset)
661 TARGET_DEFAULT_NORETURN (generic_tls_error ());
662
663 /* Request that OPS transfer up to LEN 8-bit bytes of the target's
664 OBJECT. The OFFSET, for a seekable object, specifies the
665 starting point. The ANNEX can be used to provide additional
666 data-specific information to the target.
667
668 Return the transferred status, error or OK (an
669 'enum target_xfer_status' value). Save the number of bytes
670 actually transferred in *XFERED_LEN if transfer is successful
671 (TARGET_XFER_OK) or the number unavailable bytes if the requested
672 data is unavailable (TARGET_XFER_UNAVAILABLE). *XFERED_LEN
673 smaller than LEN does not indicate the end of the object, only
674 the end of the transfer; higher level code should continue
675 transferring if desired. This is handled in target.c.
676
677 The interface does not support a "retry" mechanism. Instead it
678 assumes that at least one byte will be transfered on each
679 successful call.
680
681 NOTE: cagney/2003-10-17: The current interface can lead to
682 fragmented transfers. Lower target levels should not implement
683 hacks, such as enlarging the transfer, in an attempt to
684 compensate for this. Instead, the target stack should be
685 extended so that it implements supply/collect methods and a
686 look-aside object cache. With that available, the lowest
687 target can safely and freely "push" data up the stack.
688
689 See target_read and target_write for more information. One,
690 and only one, of readbuf or writebuf must be non-NULL. */
691
692 enum target_xfer_status (*to_xfer_partial) (struct target_ops *ops,
693 enum target_object object,
694 const char *annex,
695 gdb_byte *readbuf,
696 const gdb_byte *writebuf,
697 ULONGEST offset, ULONGEST len,
698 ULONGEST *xfered_len)
699 TARGET_DEFAULT_RETURN (TARGET_XFER_E_IO);
700
701 /* Returns the memory map for the target. A return value of NULL
702 means that no memory map is available. If a memory address
703 does not fall within any returned regions, it's assumed to be
704 RAM. The returned memory regions should not overlap.
705
706 The order of regions does not matter; target_memory_map will
707 sort regions by starting address. For that reason, this
708 function should not be called directly except via
709 target_memory_map.
710
711 This method should not cache data; if the memory map could
712 change unexpectedly, it should be invalidated, and higher
713 layers will re-fetch it. */
714 VEC(mem_region_s) *(*to_memory_map) (struct target_ops *)
715 TARGET_DEFAULT_RETURN (NULL);
716
717 /* Erases the region of flash memory starting at ADDRESS, of
718 length LENGTH.
719
720 Precondition: both ADDRESS and ADDRESS+LENGTH should be aligned
721 on flash block boundaries, as reported by 'to_memory_map'. */
722 void (*to_flash_erase) (struct target_ops *,
723 ULONGEST address, LONGEST length)
724 TARGET_DEFAULT_NORETURN (tcomplain ());
725
726 /* Finishes a flash memory write sequence. After this operation
727 all flash memory should be available for writing and the result
728 of reading from areas written by 'to_flash_write' should be
729 equal to what was written. */
730 void (*to_flash_done) (struct target_ops *)
731 TARGET_DEFAULT_NORETURN (tcomplain ());
732
733 /* Describe the architecture-specific features of this target. If
734 OPS doesn't have a description, this should delegate to the
735 "beneath" target. Returns the description found, or NULL if no
736 description was available. */
737 const struct target_desc *(*to_read_description) (struct target_ops *ops)
738 TARGET_DEFAULT_RETURN (NULL);
739
740 /* Build the PTID of the thread on which a given task is running,
741 based on LWP and THREAD. These values are extracted from the
742 task Private_Data section of the Ada Task Control Block, and
743 their interpretation depends on the target. */
744 ptid_t (*to_get_ada_task_ptid) (struct target_ops *,
745 long lwp, long thread)
746 TARGET_DEFAULT_FUNC (default_get_ada_task_ptid);
747
748 /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
749 Return 0 if *READPTR is already at the end of the buffer.
750 Return -1 if there is insufficient buffer for a whole entry.
751 Return 1 if an entry was read into *TYPEP and *VALP. */
752 int (*to_auxv_parse) (struct target_ops *ops, gdb_byte **readptr,
753 gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp)
754 TARGET_DEFAULT_FUNC (default_auxv_parse);
755
756 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
757 sequence of bytes in PATTERN with length PATTERN_LEN.
758
759 The result is 1 if found, 0 if not found, and -1 if there was an error
760 requiring halting of the search (e.g. memory read error).
761 If the pattern is found the address is recorded in FOUND_ADDRP. */
762 int (*to_search_memory) (struct target_ops *ops,
763 CORE_ADDR start_addr, ULONGEST search_space_len,
764 const gdb_byte *pattern, ULONGEST pattern_len,
765 CORE_ADDR *found_addrp)
766 TARGET_DEFAULT_FUNC (default_search_memory);
767
768 /* Can target execute in reverse? */
769 int (*to_can_execute_reverse) (struct target_ops *)
770 TARGET_DEFAULT_RETURN (0);
771
772 /* The direction the target is currently executing. Must be
773 implemented on targets that support reverse execution and async
774 mode. The default simply returns forward execution. */
775 enum exec_direction_kind (*to_execution_direction) (struct target_ops *)
776 TARGET_DEFAULT_FUNC (default_execution_direction);
777
778 /* Does this target support debugging multiple processes
779 simultaneously? */
780 int (*to_supports_multi_process) (struct target_ops *)
781 TARGET_DEFAULT_RETURN (0);
782
783 /* Does this target support enabling and disabling tracepoints while a trace
784 experiment is running? */
785 int (*to_supports_enable_disable_tracepoint) (struct target_ops *)
786 TARGET_DEFAULT_RETURN (0);
787
788 /* Does this target support disabling address space randomization? */
789 int (*to_supports_disable_randomization) (struct target_ops *);
790
791 /* Does this target support the tracenz bytecode for string collection? */
792 int (*to_supports_string_tracing) (struct target_ops *)
793 TARGET_DEFAULT_RETURN (0);
794
795 /* Does this target support evaluation of breakpoint conditions on its
796 end? */
797 int (*to_supports_evaluation_of_breakpoint_conditions) (struct target_ops *)
798 TARGET_DEFAULT_RETURN (0);
799
800 /* Does this target support evaluation of breakpoint commands on its
801 end? */
802 int (*to_can_run_breakpoint_commands) (struct target_ops *)
803 TARGET_DEFAULT_RETURN (0);
804
805 /* Determine current architecture of thread PTID.
806
807 The target is supposed to determine the architecture of the code where
808 the target is currently stopped at (on Cell, if a target is in spu_run,
809 to_thread_architecture would return SPU, otherwise PPC32 or PPC64).
810 This is architecture used to perform decr_pc_after_break adjustment,
811 and also determines the frame architecture of the innermost frame.
812 ptrace operations need to operate according to target_gdbarch ().
813
814 The default implementation always returns target_gdbarch (). */
815 struct gdbarch *(*to_thread_architecture) (struct target_ops *, ptid_t)
816 TARGET_DEFAULT_FUNC (default_thread_architecture);
817
818 /* Determine current address space of thread PTID.
819
820 The default implementation always returns the inferior's
821 address space. */
822 struct address_space *(*to_thread_address_space) (struct target_ops *,
823 ptid_t)
824 TARGET_DEFAULT_FUNC (default_thread_address_space);
825
826 /* Target file operations. */
827
828 /* Open FILENAME on the target, using FLAGS and MODE. Return a
829 target file descriptor, or -1 if an error occurs (and set
830 *TARGET_ERRNO). */
831 int (*to_fileio_open) (struct target_ops *,
832 const char *filename, int flags, int mode,
833 int *target_errno);
834
835 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
836 Return the number of bytes written, or -1 if an error occurs
837 (and set *TARGET_ERRNO). */
838 int (*to_fileio_pwrite) (struct target_ops *,
839 int fd, const gdb_byte *write_buf, int len,
840 ULONGEST offset, int *target_errno);
841
842 /* Read up to LEN bytes FD on the target into READ_BUF.
843 Return the number of bytes read, or -1 if an error occurs
844 (and set *TARGET_ERRNO). */
845 int (*to_fileio_pread) (struct target_ops *,
846 int fd, gdb_byte *read_buf, int len,
847 ULONGEST offset, int *target_errno);
848
849 /* Close FD on the target. Return 0, or -1 if an error occurs
850 (and set *TARGET_ERRNO). */
851 int (*to_fileio_close) (struct target_ops *, int fd, int *target_errno);
852
853 /* Unlink FILENAME on the target. Return 0, or -1 if an error
854 occurs (and set *TARGET_ERRNO). */
855 int (*to_fileio_unlink) (struct target_ops *,
856 const char *filename, int *target_errno);
857
858 /* Read value of symbolic link FILENAME on the target. Return a
859 null-terminated string allocated via xmalloc, or NULL if an error
860 occurs (and set *TARGET_ERRNO). */
861 char *(*to_fileio_readlink) (struct target_ops *,
862 const char *filename, int *target_errno);
863
864
865 /* Implement the "info proc" command. */
866 void (*to_info_proc) (struct target_ops *, const char *,
867 enum info_proc_what);
868
869 /* Tracepoint-related operations. */
870
871 /* Prepare the target for a tracing run. */
872 void (*to_trace_init) (struct target_ops *)
873 TARGET_DEFAULT_NORETURN (tcomplain ());
874
875 /* Send full details of a tracepoint location to the target. */
876 void (*to_download_tracepoint) (struct target_ops *,
877 struct bp_location *location)
878 TARGET_DEFAULT_NORETURN (tcomplain ());
879
880 /* Is the target able to download tracepoint locations in current
881 state? */
882 int (*to_can_download_tracepoint) (struct target_ops *)
883 TARGET_DEFAULT_RETURN (0);
884
885 /* Send full details of a trace state variable to the target. */
886 void (*to_download_trace_state_variable) (struct target_ops *,
887 struct trace_state_variable *tsv)
888 TARGET_DEFAULT_NORETURN (tcomplain ());
889
890 /* Enable a tracepoint on the target. */
891 void (*to_enable_tracepoint) (struct target_ops *,
892 struct bp_location *location)
893 TARGET_DEFAULT_NORETURN (tcomplain ());
894
895 /* Disable a tracepoint on the target. */
896 void (*to_disable_tracepoint) (struct target_ops *,
897 struct bp_location *location)
898 TARGET_DEFAULT_NORETURN (tcomplain ());
899
900 /* Inform the target info of memory regions that are readonly
901 (such as text sections), and so it should return data from
902 those rather than look in the trace buffer. */
903 void (*to_trace_set_readonly_regions) (struct target_ops *)
904 TARGET_DEFAULT_NORETURN (tcomplain ());
905
906 /* Start a trace run. */
907 void (*to_trace_start) (struct target_ops *)
908 TARGET_DEFAULT_NORETURN (tcomplain ());
909
910 /* Get the current status of a tracing run. */
911 int (*to_get_trace_status) (struct target_ops *, struct trace_status *ts)
912 TARGET_DEFAULT_RETURN (-1);
913
914 void (*to_get_tracepoint_status) (struct target_ops *,
915 struct breakpoint *tp,
916 struct uploaded_tp *utp)
917 TARGET_DEFAULT_NORETURN (tcomplain ());
918
919 /* Stop a trace run. */
920 void (*to_trace_stop) (struct target_ops *)
921 TARGET_DEFAULT_NORETURN (tcomplain ());
922
923 /* Ask the target to find a trace frame of the given type TYPE,
924 using NUM, ADDR1, and ADDR2 as search parameters. Returns the
925 number of the trace frame, and also the tracepoint number at
926 TPP. If no trace frame matches, return -1. May throw if the
927 operation fails. */
928 int (*to_trace_find) (struct target_ops *,
929 enum trace_find_type type, int num,
930 CORE_ADDR addr1, CORE_ADDR addr2, int *tpp)
931 TARGET_DEFAULT_RETURN (-1);
932
933 /* Get the value of the trace state variable number TSV, returning
934 1 if the value is known and writing the value itself into the
935 location pointed to by VAL, else returning 0. */
936 int (*to_get_trace_state_variable_value) (struct target_ops *,
937 int tsv, LONGEST *val)
938 TARGET_DEFAULT_RETURN (0);
939
940 int (*to_save_trace_data) (struct target_ops *, const char *filename)
941 TARGET_DEFAULT_NORETURN (tcomplain ());
942
943 int (*to_upload_tracepoints) (struct target_ops *,
944 struct uploaded_tp **utpp)
945 TARGET_DEFAULT_RETURN (0);
946
947 int (*to_upload_trace_state_variables) (struct target_ops *,
948 struct uploaded_tsv **utsvp)
949 TARGET_DEFAULT_RETURN (0);
950
951 LONGEST (*to_get_raw_trace_data) (struct target_ops *, gdb_byte *buf,
952 ULONGEST offset, LONGEST len)
953 TARGET_DEFAULT_NORETURN (tcomplain ());
954
955 /* Get the minimum length of instruction on which a fast tracepoint
956 may be set on the target. If this operation is unsupported,
957 return -1. If for some reason the minimum length cannot be
958 determined, return 0. */
959 int (*to_get_min_fast_tracepoint_insn_len) (struct target_ops *)
960 TARGET_DEFAULT_RETURN (-1);
961
962 /* Set the target's tracing behavior in response to unexpected
963 disconnection - set VAL to 1 to keep tracing, 0 to stop. */
964 void (*to_set_disconnected_tracing) (struct target_ops *, int val)
965 TARGET_DEFAULT_IGNORE ();
966 void (*to_set_circular_trace_buffer) (struct target_ops *, int val)
967 TARGET_DEFAULT_IGNORE ();
968 /* Set the size of trace buffer in the target. */
969 void (*to_set_trace_buffer_size) (struct target_ops *, LONGEST val)
970 TARGET_DEFAULT_IGNORE ();
971
972 /* Add/change textual notes about the trace run, returning 1 if
973 successful, 0 otherwise. */
974 int (*to_set_trace_notes) (struct target_ops *,
975 const char *user, const char *notes,
976 const char *stopnotes)
977 TARGET_DEFAULT_RETURN (0);
978
979 /* Return the processor core that thread PTID was last seen on.
980 This information is updated only when:
981 - update_thread_list is called
982 - thread stops
983 If the core cannot be determined -- either for the specified
984 thread, or right now, or in this debug session, or for this
985 target -- return -1. */
986 int (*to_core_of_thread) (struct target_ops *, ptid_t ptid)
987 TARGET_DEFAULT_RETURN (-1);
988
989 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range
990 matches the contents of [DATA,DATA+SIZE). Returns 1 if there's
991 a match, 0 if there's a mismatch, and -1 if an error is
992 encountered while reading memory. */
993 int (*to_verify_memory) (struct target_ops *, const gdb_byte *data,
994 CORE_ADDR memaddr, ULONGEST size)
995 TARGET_DEFAULT_FUNC (default_verify_memory);
996
997 /* Return the address of the start of the Thread Information Block
998 a Windows OS specific feature. */
999 int (*to_get_tib_address) (struct target_ops *,
1000 ptid_t ptid, CORE_ADDR *addr)
1001 TARGET_DEFAULT_NORETURN (tcomplain ());
1002
1003 /* Send the new settings of write permission variables. */
1004 void (*to_set_permissions) (struct target_ops *)
1005 TARGET_DEFAULT_IGNORE ();
1006
1007 /* Look for a static tracepoint marker at ADDR, and fill in MARKER
1008 with its details. Return 1 on success, 0 on failure. */
1009 int (*to_static_tracepoint_marker_at) (struct target_ops *, CORE_ADDR,
1010 struct static_tracepoint_marker *marker)
1011 TARGET_DEFAULT_RETURN (0);
1012
1013 /* Return a vector of all tracepoints markers string id ID, or all
1014 markers if ID is NULL. */
1015 VEC(static_tracepoint_marker_p) *(*to_static_tracepoint_markers_by_strid) (struct target_ops *, const char *id)
1016 TARGET_DEFAULT_NORETURN (tcomplain ());
1017
1018 /* Return a traceframe info object describing the current
1019 traceframe's contents. This method should not cache data;
1020 higher layers take care of caching, invalidating, and
1021 re-fetching when necessary. */
1022 struct traceframe_info *(*to_traceframe_info) (struct target_ops *)
1023 TARGET_DEFAULT_NORETURN (tcomplain ());
1024
1025 /* Ask the target to use or not to use agent according to USE. Return 1
1026 successful, 0 otherwise. */
1027 int (*to_use_agent) (struct target_ops *, int use)
1028 TARGET_DEFAULT_NORETURN (tcomplain ());
1029
1030 /* Is the target able to use agent in current state? */
1031 int (*to_can_use_agent) (struct target_ops *)
1032 TARGET_DEFAULT_RETURN (0);
1033
1034 /* Check whether the target supports branch tracing. */
1035 int (*to_supports_btrace) (struct target_ops *, enum btrace_format)
1036 TARGET_DEFAULT_RETURN (0);
1037
1038 /* Enable branch tracing for PTID using CONF configuration.
1039 Return a branch trace target information struct for reading and for
1040 disabling branch trace. */
1041 struct btrace_target_info *(*to_enable_btrace) (struct target_ops *,
1042 ptid_t ptid,
1043 const struct btrace_config *conf)
1044 TARGET_DEFAULT_NORETURN (tcomplain ());
1045
1046 /* Disable branch tracing and deallocate TINFO. */
1047 void (*to_disable_btrace) (struct target_ops *,
1048 struct btrace_target_info *tinfo)
1049 TARGET_DEFAULT_NORETURN (tcomplain ());
1050
1051 /* Disable branch tracing and deallocate TINFO. This function is similar
1052 to to_disable_btrace, except that it is called during teardown and is
1053 only allowed to perform actions that are safe. A counter-example would
1054 be attempting to talk to a remote target. */
1055 void (*to_teardown_btrace) (struct target_ops *,
1056 struct btrace_target_info *tinfo)
1057 TARGET_DEFAULT_NORETURN (tcomplain ());
1058
1059 /* Read branch trace data for the thread indicated by BTINFO into DATA.
1060 DATA is cleared before new trace is added. */
1061 enum btrace_error (*to_read_btrace) (struct target_ops *self,
1062 struct btrace_data *data,
1063 struct btrace_target_info *btinfo,
1064 enum btrace_read_type type)
1065 TARGET_DEFAULT_NORETURN (tcomplain ());
1066
1067 /* Get the branch trace configuration. */
1068 const struct btrace_config *(*to_btrace_conf) (struct target_ops *self,
1069 const struct btrace_target_info *)
1070 TARGET_DEFAULT_RETURN (NULL);
1071
1072 /* Stop trace recording. */
1073 void (*to_stop_recording) (struct target_ops *)
1074 TARGET_DEFAULT_IGNORE ();
1075
1076 /* Print information about the recording. */
1077 void (*to_info_record) (struct target_ops *)
1078 TARGET_DEFAULT_IGNORE ();
1079
1080 /* Save the recorded execution trace into a file. */
1081 void (*to_save_record) (struct target_ops *, const char *filename)
1082 TARGET_DEFAULT_NORETURN (tcomplain ());
1083
1084 /* Delete the recorded execution trace from the current position
1085 onwards. */
1086 void (*to_delete_record) (struct target_ops *)
1087 TARGET_DEFAULT_NORETURN (tcomplain ());
1088
1089 /* Query if the record target is currently replaying. */
1090 int (*to_record_is_replaying) (struct target_ops *)
1091 TARGET_DEFAULT_RETURN (0);
1092
1093 /* Go to the begin of the execution trace. */
1094 void (*to_goto_record_begin) (struct target_ops *)
1095 TARGET_DEFAULT_NORETURN (tcomplain ());
1096
1097 /* Go to the end of the execution trace. */
1098 void (*to_goto_record_end) (struct target_ops *)
1099 TARGET_DEFAULT_NORETURN (tcomplain ());
1100
1101 /* Go to a specific location in the recorded execution trace. */
1102 void (*to_goto_record) (struct target_ops *, ULONGEST insn)
1103 TARGET_DEFAULT_NORETURN (tcomplain ());
1104
1105 /* Disassemble SIZE instructions in the recorded execution trace from
1106 the current position.
1107 If SIZE < 0, disassemble abs (SIZE) preceding instructions; otherwise,
1108 disassemble SIZE succeeding instructions. */
1109 void (*to_insn_history) (struct target_ops *, int size, int flags)
1110 TARGET_DEFAULT_NORETURN (tcomplain ());
1111
1112 /* Disassemble SIZE instructions in the recorded execution trace around
1113 FROM.
1114 If SIZE < 0, disassemble abs (SIZE) instructions before FROM; otherwise,
1115 disassemble SIZE instructions after FROM. */
1116 void (*to_insn_history_from) (struct target_ops *,
1117 ULONGEST from, int size, int flags)
1118 TARGET_DEFAULT_NORETURN (tcomplain ());
1119
1120 /* Disassemble a section of the recorded execution trace from instruction
1121 BEGIN (inclusive) to instruction END (inclusive). */
1122 void (*to_insn_history_range) (struct target_ops *,
1123 ULONGEST begin, ULONGEST end, int flags)
1124 TARGET_DEFAULT_NORETURN (tcomplain ());
1125
1126 /* Print a function trace of the recorded execution trace.
1127 If SIZE < 0, print abs (SIZE) preceding functions; otherwise, print SIZE
1128 succeeding functions. */
1129 void (*to_call_history) (struct target_ops *, int size, int flags)
1130 TARGET_DEFAULT_NORETURN (tcomplain ());
1131
1132 /* Print a function trace of the recorded execution trace starting
1133 at function FROM.
1134 If SIZE < 0, print abs (SIZE) functions before FROM; otherwise, print
1135 SIZE functions after FROM. */
1136 void (*to_call_history_from) (struct target_ops *,
1137 ULONGEST begin, int size, int flags)
1138 TARGET_DEFAULT_NORETURN (tcomplain ());
1139
1140 /* Print a function trace of an execution trace section from function BEGIN
1141 (inclusive) to function END (inclusive). */
1142 void (*to_call_history_range) (struct target_ops *,
1143 ULONGEST begin, ULONGEST end, int flags)
1144 TARGET_DEFAULT_NORETURN (tcomplain ());
1145
1146 /* Nonzero if TARGET_OBJECT_LIBRARIES_SVR4 may be read with a
1147 non-empty annex. */
1148 int (*to_augmented_libraries_svr4_read) (struct target_ops *)
1149 TARGET_DEFAULT_RETURN (0);
1150
1151 /* Those unwinders are tried before any other arch unwinders. If
1152 SELF doesn't have unwinders, it should delegate to the
1153 "beneath" target. */
1154 const struct frame_unwind *(*to_get_unwinder) (struct target_ops *self)
1155 TARGET_DEFAULT_RETURN (NULL);
1156
1157 const struct frame_unwind *(*to_get_tailcall_unwinder) (struct target_ops *self)
1158 TARGET_DEFAULT_RETURN (NULL);
1159
1160 /* Return the number of bytes by which the PC needs to be decremented
1161 after executing a breakpoint instruction.
1162 Defaults to gdbarch_decr_pc_after_break (GDBARCH). */
1163 CORE_ADDR (*to_decr_pc_after_break) (struct target_ops *ops,
1164 struct gdbarch *gdbarch)
1165 TARGET_DEFAULT_FUNC (default_target_decr_pc_after_break);
1166
1167 /* Prepare to generate a core file. */
1168 void (*to_prepare_to_generate_core) (struct target_ops *)
1169 TARGET_DEFAULT_IGNORE ();
1170
1171 /* Cleanup after generating a core file. */
1172 void (*to_done_generating_core) (struct target_ops *)
1173 TARGET_DEFAULT_IGNORE ();
1174
1175 int to_magic;
1176 /* Need sub-structure for target machine related rather than comm related?
1177 */
1178 };
1179
1180 /* Magic number for checking ops size. If a struct doesn't end with this
1181 number, somebody changed the declaration but didn't change all the
1182 places that initialize one. */
1183
1184 #define OPS_MAGIC 3840
1185
1186 /* The ops structure for our "current" target process. This should
1187 never be NULL. If there is no target, it points to the dummy_target. */
1188
1189 extern struct target_ops current_target;
1190
1191 /* Define easy words for doing these operations on our current target. */
1192
1193 #define target_shortname (current_target.to_shortname)
1194 #define target_longname (current_target.to_longname)
1195
1196 /* Does whatever cleanup is required for a target that we are no
1197 longer going to be calling. This routine is automatically always
1198 called after popping the target off the target stack - the target's
1199 own methods are no longer available through the target vector.
1200 Closing file descriptors and freeing all memory allocated memory are
1201 typical things it should do. */
1202
1203 void target_close (struct target_ops *targ);
1204
1205 /* Find the correct target to use for "attach". If a target on the
1206 current stack supports attaching, then it is returned. Otherwise,
1207 the default run target is returned. */
1208
1209 extern struct target_ops *find_attach_target (void);
1210
1211 /* Find the correct target to use for "run". If a target on the
1212 current stack supports creating a new inferior, then it is
1213 returned. Otherwise, the default run target is returned. */
1214
1215 extern struct target_ops *find_run_target (void);
1216
1217 /* Some targets don't generate traps when attaching to the inferior,
1218 or their target_attach implementation takes care of the waiting.
1219 These targets must set to_attach_no_wait. */
1220
1221 #define target_attach_no_wait \
1222 (current_target.to_attach_no_wait)
1223
1224 /* The target_attach operation places a process under debugger control,
1225 and stops the process.
1226
1227 This operation provides a target-specific hook that allows the
1228 necessary bookkeeping to be performed after an attach completes. */
1229 #define target_post_attach(pid) \
1230 (*current_target.to_post_attach) (&current_target, pid)
1231
1232 /* Takes a program previously attached to and detaches it.
1233 The program may resume execution (some targets do, some don't) and will
1234 no longer stop on signals, etc. We better not have left any breakpoints
1235 in the program or it'll die when it hits one. ARGS is arguments
1236 typed by the user (e.g. a signal to send the process). FROM_TTY
1237 says whether to be verbose or not. */
1238
1239 extern void target_detach (const char *, int);
1240
1241 /* Disconnect from the current target without resuming it (leaving it
1242 waiting for a debugger). */
1243
1244 extern void target_disconnect (const char *, int);
1245
1246 /* Resume execution of the target process PTID (or a group of
1247 threads). STEP says whether to single-step or to run free; SIGGNAL
1248 is the signal to be given to the target, or GDB_SIGNAL_0 for no
1249 signal. The caller may not pass GDB_SIGNAL_DEFAULT. A specific
1250 PTID means `step/resume only this process id'. A wildcard PTID
1251 (all threads, or all threads of process) means `step/resume
1252 INFERIOR_PTID, and let other threads (for which the wildcard PTID
1253 matches) resume with their 'thread->suspend.stop_signal' signal
1254 (usually GDB_SIGNAL_0) if it is in "pass" state, or with no signal
1255 if in "no pass" state. */
1256
1257 extern void target_resume (ptid_t ptid, int step, enum gdb_signal signal);
1258
1259 /* Wait for process pid to do something. PTID = -1 to wait for any
1260 pid to do something. Return pid of child, or -1 in case of error;
1261 store status through argument pointer STATUS. Note that it is
1262 _NOT_ OK to throw_exception() out of target_wait() without popping
1263 the debugging target from the stack; GDB isn't prepared to get back
1264 to the prompt with a debugging target but without the frame cache,
1265 stop_pc, etc., set up. OPTIONS is a bitwise OR of TARGET_W*
1266 options. */
1267
1268 extern ptid_t target_wait (ptid_t ptid, struct target_waitstatus *status,
1269 int options);
1270
1271 /* Fetch at least register REGNO, or all regs if regno == -1. No result. */
1272
1273 extern void target_fetch_registers (struct regcache *regcache, int regno);
1274
1275 /* Store at least register REGNO, or all regs if REGNO == -1.
1276 It can store as many registers as it wants to, so target_prepare_to_store
1277 must have been previously called. Calls error() if there are problems. */
1278
1279 extern void target_store_registers (struct regcache *regcache, int regs);
1280
1281 /* Get ready to modify the registers array. On machines which store
1282 individual registers, this doesn't need to do anything. On machines
1283 which store all the registers in one fell swoop, this makes sure
1284 that REGISTERS contains all the registers from the program being
1285 debugged. */
1286
1287 #define target_prepare_to_store(regcache) \
1288 (*current_target.to_prepare_to_store) (&current_target, regcache)
1289
1290 /* Determine current address space of thread PTID. */
1291
1292 struct address_space *target_thread_address_space (ptid_t);
1293
1294 /* Implement the "info proc" command. This returns one if the request
1295 was handled, and zero otherwise. It can also throw an exception if
1296 an error was encountered while attempting to handle the
1297 request. */
1298
1299 int target_info_proc (const char *, enum info_proc_what);
1300
1301 /* Returns true if this target can debug multiple processes
1302 simultaneously. */
1303
1304 #define target_supports_multi_process() \
1305 (*current_target.to_supports_multi_process) (&current_target)
1306
1307 /* Returns true if this target can disable address space randomization. */
1308
1309 int target_supports_disable_randomization (void);
1310
1311 /* Returns true if this target can enable and disable tracepoints
1312 while a trace experiment is running. */
1313
1314 #define target_supports_enable_disable_tracepoint() \
1315 (*current_target.to_supports_enable_disable_tracepoint) (&current_target)
1316
1317 #define target_supports_string_tracing() \
1318 (*current_target.to_supports_string_tracing) (&current_target)
1319
1320 /* Returns true if this target can handle breakpoint conditions
1321 on its end. */
1322
1323 #define target_supports_evaluation_of_breakpoint_conditions() \
1324 (*current_target.to_supports_evaluation_of_breakpoint_conditions) (&current_target)
1325
1326 /* Returns true if this target can handle breakpoint commands
1327 on its end. */
1328
1329 #define target_can_run_breakpoint_commands() \
1330 (*current_target.to_can_run_breakpoint_commands) (&current_target)
1331
1332 extern int target_read_string (CORE_ADDR, char **, int, int *);
1333
1334 /* For target_read_memory see target/target.h. */
1335
1336 extern int target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr,
1337 ssize_t len);
1338
1339 extern int target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len);
1340
1341 extern int target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len);
1342
1343 /* For target_write_memory see target/target.h. */
1344
1345 extern int target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr,
1346 ssize_t len);
1347
1348 /* Fetches the target's memory map. If one is found it is sorted
1349 and returned, after some consistency checking. Otherwise, NULL
1350 is returned. */
1351 VEC(mem_region_s) *target_memory_map (void);
1352
1353 /* Erase the specified flash region. */
1354 void target_flash_erase (ULONGEST address, LONGEST length);
1355
1356 /* Finish a sequence of flash operations. */
1357 void target_flash_done (void);
1358
1359 /* Describes a request for a memory write operation. */
1360 struct memory_write_request
1361 {
1362 /* Begining address that must be written. */
1363 ULONGEST begin;
1364 /* Past-the-end address. */
1365 ULONGEST end;
1366 /* The data to write. */
1367 gdb_byte *data;
1368 /* A callback baton for progress reporting for this request. */
1369 void *baton;
1370 };
1371 typedef struct memory_write_request memory_write_request_s;
1372 DEF_VEC_O(memory_write_request_s);
1373
1374 /* Enumeration specifying different flash preservation behaviour. */
1375 enum flash_preserve_mode
1376 {
1377 flash_preserve,
1378 flash_discard
1379 };
1380
1381 /* Write several memory blocks at once. This version can be more
1382 efficient than making several calls to target_write_memory, in
1383 particular because it can optimize accesses to flash memory.
1384
1385 Moreover, this is currently the only memory access function in gdb
1386 that supports writing to flash memory, and it should be used for
1387 all cases where access to flash memory is desirable.
1388
1389 REQUESTS is the vector (see vec.h) of memory_write_request.
1390 PRESERVE_FLASH_P indicates what to do with blocks which must be
1391 erased, but not completely rewritten.
1392 PROGRESS_CB is a function that will be periodically called to provide
1393 feedback to user. It will be called with the baton corresponding
1394 to the request currently being written. It may also be called
1395 with a NULL baton, when preserved flash sectors are being rewritten.
1396
1397 The function returns 0 on success, and error otherwise. */
1398 int target_write_memory_blocks (VEC(memory_write_request_s) *requests,
1399 enum flash_preserve_mode preserve_flash_p,
1400 void (*progress_cb) (ULONGEST, void *));
1401
1402 /* Print a line about the current target. */
1403
1404 #define target_files_info() \
1405 (*current_target.to_files_info) (&current_target)
1406
1407 /* Insert a breakpoint at address BP_TGT->placed_address in
1408 the target machine. Returns 0 for success, and returns non-zero or
1409 throws an error (with a detailed failure reason error code and
1410 message) otherwise. */
1411
1412 extern int target_insert_breakpoint (struct gdbarch *gdbarch,
1413 struct bp_target_info *bp_tgt);
1414
1415 /* Remove a breakpoint at address BP_TGT->placed_address in the target
1416 machine. Result is 0 for success, non-zero for error. */
1417
1418 extern int target_remove_breakpoint (struct gdbarch *gdbarch,
1419 struct bp_target_info *bp_tgt);
1420
1421 /* Returns true if the terminal settings of the inferior are in
1422 effect. */
1423
1424 extern int target_terminal_is_inferior (void);
1425
1426 /* Initialize the terminal settings we record for the inferior,
1427 before we actually run the inferior. */
1428
1429 extern void target_terminal_init (void);
1430
1431 /* Put the inferior's terminal settings into effect.
1432 This is preparation for starting or resuming the inferior. */
1433
1434 extern void target_terminal_inferior (void);
1435
1436 /* Put some of our terminal settings into effect, enough to get proper
1437 results from our output, but do not change into or out of RAW mode
1438 so that no input is discarded. This is a no-op if terminal_ours
1439 was most recently called. */
1440
1441 extern void target_terminal_ours_for_output (void);
1442
1443 /* Put our terminal settings into effect.
1444 First record the inferior's terminal settings
1445 so they can be restored properly later. */
1446
1447 extern void target_terminal_ours (void);
1448
1449 /* Return true if the target stack has a non-default
1450 "to_terminal_ours" method. */
1451
1452 extern int target_supports_terminal_ours (void);
1453
1454 /* Make a cleanup that restores the state of the terminal to the current
1455 state. */
1456 extern struct cleanup *make_cleanup_restore_target_terminal (void);
1457
1458 /* Print useful information about our terminal status, if such a thing
1459 exists. */
1460
1461 #define target_terminal_info(arg, from_tty) \
1462 (*current_target.to_terminal_info) (&current_target, arg, from_tty)
1463
1464 /* Kill the inferior process. Make it go away. */
1465
1466 extern void target_kill (void);
1467
1468 /* Load an executable file into the target process. This is expected
1469 to not only bring new code into the target process, but also to
1470 update GDB's symbol tables to match.
1471
1472 ARG contains command-line arguments, to be broken down with
1473 buildargv (). The first non-switch argument is the filename to
1474 load, FILE; the second is a number (as parsed by strtoul (..., ...,
1475 0)), which is an offset to apply to the load addresses of FILE's
1476 sections. The target may define switches, or other non-switch
1477 arguments, as it pleases. */
1478
1479 extern void target_load (const char *arg, int from_tty);
1480
1481 /* Some targets (such as ttrace-based HPUX) don't allow us to request
1482 notification of inferior events such as fork and vork immediately
1483 after the inferior is created. (This because of how gdb gets an
1484 inferior created via invoking a shell to do it. In such a scenario,
1485 if the shell init file has commands in it, the shell will fork and
1486 exec for each of those commands, and we will see each such fork
1487 event. Very bad.)
1488
1489 Such targets will supply an appropriate definition for this function. */
1490
1491 #define target_post_startup_inferior(ptid) \
1492 (*current_target.to_post_startup_inferior) (&current_target, ptid)
1493
1494 /* On some targets, we can catch an inferior fork or vfork event when
1495 it occurs. These functions insert/remove an already-created
1496 catchpoint for such events. They return 0 for success, 1 if the
1497 catchpoint type is not supported and -1 for failure. */
1498
1499 #define target_insert_fork_catchpoint(pid) \
1500 (*current_target.to_insert_fork_catchpoint) (&current_target, pid)
1501
1502 #define target_remove_fork_catchpoint(pid) \
1503 (*current_target.to_remove_fork_catchpoint) (&current_target, pid)
1504
1505 #define target_insert_vfork_catchpoint(pid) \
1506 (*current_target.to_insert_vfork_catchpoint) (&current_target, pid)
1507
1508 #define target_remove_vfork_catchpoint(pid) \
1509 (*current_target.to_remove_vfork_catchpoint) (&current_target, pid)
1510
1511 /* If the inferior forks or vforks, this function will be called at
1512 the next resume in order to perform any bookkeeping and fiddling
1513 necessary to continue debugging either the parent or child, as
1514 requested, and releasing the other. Information about the fork
1515 or vfork event is available via get_last_target_status ().
1516 This function returns 1 if the inferior should not be resumed
1517 (i.e. there is another event pending). */
1518
1519 int target_follow_fork (int follow_child, int detach_fork);
1520
1521 /* On some targets, we can catch an inferior exec event when it
1522 occurs. These functions insert/remove an already-created
1523 catchpoint for such events. They return 0 for success, 1 if the
1524 catchpoint type is not supported and -1 for failure. */
1525
1526 #define target_insert_exec_catchpoint(pid) \
1527 (*current_target.to_insert_exec_catchpoint) (&current_target, pid)
1528
1529 #define target_remove_exec_catchpoint(pid) \
1530 (*current_target.to_remove_exec_catchpoint) (&current_target, pid)
1531
1532 /* Syscall catch.
1533
1534 NEEDED is nonzero if any syscall catch (of any kind) is requested.
1535 If NEEDED is zero, it means the target can disable the mechanism to
1536 catch system calls because there are no more catchpoints of this type.
1537
1538 ANY_COUNT is nonzero if a generic (filter-less) syscall catch is
1539 being requested. In this case, both TABLE_SIZE and TABLE should
1540 be ignored.
1541
1542 TABLE_SIZE is the number of elements in TABLE. It only matters if
1543 ANY_COUNT is zero.
1544
1545 TABLE is an array of ints, indexed by syscall number. An element in
1546 this array is nonzero if that syscall should be caught. This argument
1547 only matters if ANY_COUNT is zero.
1548
1549 Return 0 for success, 1 if syscall catchpoints are not supported or -1
1550 for failure. */
1551
1552 #define target_set_syscall_catchpoint(pid, needed, any_count, table_size, table) \
1553 (*current_target.to_set_syscall_catchpoint) (&current_target, \
1554 pid, needed, any_count, \
1555 table_size, table)
1556
1557 /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the
1558 exit code of PID, if any. */
1559
1560 #define target_has_exited(pid,wait_status,exit_status) \
1561 (*current_target.to_has_exited) (&current_target, \
1562 pid,wait_status,exit_status)
1563
1564 /* The debugger has completed a blocking wait() call. There is now
1565 some process event that must be processed. This function should
1566 be defined by those targets that require the debugger to perform
1567 cleanup or internal state changes in response to the process event. */
1568
1569 /* The inferior process has died. Do what is right. */
1570
1571 void target_mourn_inferior (void);
1572
1573 /* Does target have enough data to do a run or attach command? */
1574
1575 #define target_can_run(t) \
1576 ((t)->to_can_run) (t)
1577
1578 /* Set list of signals to be handled in the target.
1579
1580 PASS_SIGNALS is an array of size NSIG, indexed by target signal number
1581 (enum gdb_signal). For every signal whose entry in this array is
1582 non-zero, the target is allowed -but not required- to skip reporting
1583 arrival of the signal to the GDB core by returning from target_wait,
1584 and to pass the signal directly to the inferior instead.
1585
1586 However, if the target is hardware single-stepping a thread that is
1587 about to receive a signal, it needs to be reported in any case, even
1588 if mentioned in a previous target_pass_signals call. */
1589
1590 extern void target_pass_signals (int nsig, unsigned char *pass_signals);
1591
1592 /* Set list of signals the target may pass to the inferior. This
1593 directly maps to the "handle SIGNAL pass/nopass" setting.
1594
1595 PROGRAM_SIGNALS is an array of size NSIG, indexed by target signal
1596 number (enum gdb_signal). For every signal whose entry in this
1597 array is non-zero, the target is allowed to pass the signal to the
1598 inferior. Signals not present in the array shall be silently
1599 discarded. This does not influence whether to pass signals to the
1600 inferior as a result of a target_resume call. This is useful in
1601 scenarios where the target needs to decide whether to pass or not a
1602 signal to the inferior without GDB core involvement, such as for
1603 example, when detaching (as threads may have been suspended with
1604 pending signals not reported to GDB). */
1605
1606 extern void target_program_signals (int nsig, unsigned char *program_signals);
1607
1608 /* Check to see if a thread is still alive. */
1609
1610 extern int target_thread_alive (ptid_t ptid);
1611
1612 /* Sync the target's threads with GDB's thread list. */
1613
1614 extern void target_update_thread_list (void);
1615
1616 /* Make target stop in a continuable fashion. (For instance, under
1617 Unix, this should act like SIGSTOP). Note that this function is
1618 asynchronous: it does not wait for the target to become stopped
1619 before returning. If this is the behavior you want please use
1620 target_stop_and_wait. */
1621
1622 extern void target_stop (ptid_t ptid);
1623
1624 /* Send the specified COMMAND to the target's monitor
1625 (shell,interpreter) for execution. The result of the query is
1626 placed in OUTBUF. */
1627
1628 #define target_rcmd(command, outbuf) \
1629 (*current_target.to_rcmd) (&current_target, command, outbuf)
1630
1631
1632 /* Does the target include all of memory, or only part of it? This
1633 determines whether we look up the target chain for other parts of
1634 memory if this target can't satisfy a request. */
1635
1636 extern int target_has_all_memory_1 (void);
1637 #define target_has_all_memory target_has_all_memory_1 ()
1638
1639 /* Does the target include memory? (Dummy targets don't.) */
1640
1641 extern int target_has_memory_1 (void);
1642 #define target_has_memory target_has_memory_1 ()
1643
1644 /* Does the target have a stack? (Exec files don't, VxWorks doesn't, until
1645 we start a process.) */
1646
1647 extern int target_has_stack_1 (void);
1648 #define target_has_stack target_has_stack_1 ()
1649
1650 /* Does the target have registers? (Exec files don't.) */
1651
1652 extern int target_has_registers_1 (void);
1653 #define target_has_registers target_has_registers_1 ()
1654
1655 /* Does the target have execution? Can we make it jump (through
1656 hoops), or pop its stack a few times? This means that the current
1657 target is currently executing; for some targets, that's the same as
1658 whether or not the target is capable of execution, but there are
1659 also targets which can be current while not executing. In that
1660 case this will become true after to_create_inferior or
1661 to_attach. */
1662
1663 extern int target_has_execution_1 (ptid_t);
1664
1665 /* Like target_has_execution_1, but always passes inferior_ptid. */
1666
1667 extern int target_has_execution_current (void);
1668
1669 #define target_has_execution target_has_execution_current ()
1670
1671 /* Default implementations for process_stratum targets. Return true
1672 if there's a selected inferior, false otherwise. */
1673
1674 extern int default_child_has_all_memory (struct target_ops *ops);
1675 extern int default_child_has_memory (struct target_ops *ops);
1676 extern int default_child_has_stack (struct target_ops *ops);
1677 extern int default_child_has_registers (struct target_ops *ops);
1678 extern int default_child_has_execution (struct target_ops *ops,
1679 ptid_t the_ptid);
1680
1681 /* Can the target support the debugger control of thread execution?
1682 Can it lock the thread scheduler? */
1683
1684 #define target_can_lock_scheduler \
1685 (current_target.to_has_thread_control & tc_schedlock)
1686
1687 /* Controls whether async mode is permitted. */
1688 extern int target_async_permitted;
1689
1690 /* Can the target support asynchronous execution? */
1691 #define target_can_async_p() (current_target.to_can_async_p (&current_target))
1692
1693 /* Is the target in asynchronous execution mode? */
1694 #define target_is_async_p() (current_target.to_is_async_p (&current_target))
1695
1696 /* Put the target in async mode with the specified callback function. */
1697 #define target_async(CALLBACK,CONTEXT) \
1698 (current_target.to_async (&current_target, (CALLBACK), (CONTEXT)))
1699
1700 #define target_execution_direction() \
1701 (current_target.to_execution_direction (&current_target))
1702
1703 /* Converts a process id to a string. Usually, the string just contains
1704 `process xyz', but on some systems it may contain
1705 `process xyz thread abc'. */
1706
1707 extern char *target_pid_to_str (ptid_t ptid);
1708
1709 extern char *normal_pid_to_str (ptid_t ptid);
1710
1711 /* Return a short string describing extra information about PID,
1712 e.g. "sleeping", "runnable", "running on LWP 3". Null return value
1713 is okay. */
1714
1715 #define target_extra_thread_info(TP) \
1716 (current_target.to_extra_thread_info (&current_target, TP))
1717
1718 /* Return the thread's name. A NULL result means that the target
1719 could not determine this thread's name. */
1720
1721 extern char *target_thread_name (struct thread_info *);
1722
1723 /* Attempts to find the pathname of the executable file
1724 that was run to create a specified process.
1725
1726 The process PID must be stopped when this operation is used.
1727
1728 If the executable file cannot be determined, NULL is returned.
1729
1730 Else, a pointer to a character string containing the pathname
1731 is returned. This string should be copied into a buffer by
1732 the client if the string will not be immediately used, or if
1733 it must persist. */
1734
1735 #define target_pid_to_exec_file(pid) \
1736 (current_target.to_pid_to_exec_file) (&current_target, pid)
1737
1738 /* See the to_thread_architecture description in struct target_ops. */
1739
1740 #define target_thread_architecture(ptid) \
1741 (current_target.to_thread_architecture (&current_target, ptid))
1742
1743 /*
1744 * Iterator function for target memory regions.
1745 * Calls a callback function once for each memory region 'mapped'
1746 * in the child process. Defined as a simple macro rather than
1747 * as a function macro so that it can be tested for nullity.
1748 */
1749
1750 #define target_find_memory_regions(FUNC, DATA) \
1751 (current_target.to_find_memory_regions) (&current_target, FUNC, DATA)
1752
1753 /*
1754 * Compose corefile .note section.
1755 */
1756
1757 #define target_make_corefile_notes(BFD, SIZE_P) \
1758 (current_target.to_make_corefile_notes) (&current_target, BFD, SIZE_P)
1759
1760 /* Bookmark interfaces. */
1761 #define target_get_bookmark(ARGS, FROM_TTY) \
1762 (current_target.to_get_bookmark) (&current_target, ARGS, FROM_TTY)
1763
1764 #define target_goto_bookmark(ARG, FROM_TTY) \
1765 (current_target.to_goto_bookmark) (&current_target, ARG, FROM_TTY)
1766
1767 /* Hardware watchpoint interfaces. */
1768
1769 /* Returns non-zero if we were stopped by a hardware watchpoint (memory read or
1770 write). Only the INFERIOR_PTID task is being queried. */
1771
1772 #define target_stopped_by_watchpoint() \
1773 ((*current_target.to_stopped_by_watchpoint) (&current_target))
1774
1775 /* Returns non-zero if the target stopped because it executed a
1776 software breakpoint instruction. */
1777
1778 #define target_stopped_by_sw_breakpoint() \
1779 ((*current_target.to_stopped_by_sw_breakpoint) (&current_target))
1780
1781 #define target_supports_stopped_by_sw_breakpoint() \
1782 ((*current_target.to_supports_stopped_by_sw_breakpoint) (&current_target))
1783
1784 #define target_stopped_by_hw_breakpoint() \
1785 ((*current_target.to_stopped_by_hw_breakpoint) (&current_target))
1786
1787 #define target_supports_stopped_by_hw_breakpoint() \
1788 ((*current_target.to_supports_stopped_by_hw_breakpoint) (&current_target))
1789
1790 /* Non-zero if we have steppable watchpoints */
1791
1792 #define target_have_steppable_watchpoint \
1793 (current_target.to_have_steppable_watchpoint)
1794
1795 /* Non-zero if we have continuable watchpoints */
1796
1797 #define target_have_continuable_watchpoint \
1798 (current_target.to_have_continuable_watchpoint)
1799
1800 /* Provide defaults for hardware watchpoint functions. */
1801
1802 /* If the *_hw_beakpoint functions have not been defined
1803 elsewhere use the definitions in the target vector. */
1804
1805 /* Returns non-zero if we can set a hardware watchpoint of type TYPE. TYPE is
1806 one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or
1807 bp_hardware_breakpoint. CNT is the number of such watchpoints used so far
1808 (including this one?). OTHERTYPE is who knows what... */
1809
1810 #define target_can_use_hardware_watchpoint(TYPE,CNT,OTHERTYPE) \
1811 (*current_target.to_can_use_hw_breakpoint) (&current_target, \
1812 TYPE, CNT, OTHERTYPE);
1813
1814 /* Returns the number of debug registers needed to watch the given
1815 memory region, or zero if not supported. */
1816
1817 #define target_region_ok_for_hw_watchpoint(addr, len) \
1818 (*current_target.to_region_ok_for_hw_watchpoint) (&current_target, \
1819 addr, len)
1820
1821
1822 /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes.
1823 TYPE is 0 for write, 1 for read, and 2 for read/write accesses.
1824 COND is the expression for its condition, or NULL if there's none.
1825 Returns 0 for success, 1 if the watchpoint type is not supported,
1826 -1 for failure. */
1827
1828 #define target_insert_watchpoint(addr, len, type, cond) \
1829 (*current_target.to_insert_watchpoint) (&current_target, \
1830 addr, len, type, cond)
1831
1832 #define target_remove_watchpoint(addr, len, type, cond) \
1833 (*current_target.to_remove_watchpoint) (&current_target, \
1834 addr, len, type, cond)
1835
1836 /* Insert a new masked watchpoint at ADDR using the mask MASK.
1837 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
1838 or hw_access for an access watchpoint. Returns 0 for success, 1 if
1839 masked watchpoints are not supported, -1 for failure. */
1840
1841 extern int target_insert_mask_watchpoint (CORE_ADDR, CORE_ADDR, int);
1842
1843 /* Remove a masked watchpoint at ADDR with the mask MASK.
1844 RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
1845 or hw_access for an access watchpoint. Returns 0 for success, non-zero
1846 for failure. */
1847
1848 extern int target_remove_mask_watchpoint (CORE_ADDR, CORE_ADDR, int);
1849
1850 /* Insert a hardware breakpoint at address BP_TGT->placed_address in
1851 the target machine. Returns 0 for success, and returns non-zero or
1852 throws an error (with a detailed failure reason error code and
1853 message) otherwise. */
1854
1855 #define target_insert_hw_breakpoint(gdbarch, bp_tgt) \
1856 (*current_target.to_insert_hw_breakpoint) (&current_target, \
1857 gdbarch, bp_tgt)
1858
1859 #define target_remove_hw_breakpoint(gdbarch, bp_tgt) \
1860 (*current_target.to_remove_hw_breakpoint) (&current_target, \
1861 gdbarch, bp_tgt)
1862
1863 /* Return number of debug registers needed for a ranged breakpoint,
1864 or -1 if ranged breakpoints are not supported. */
1865
1866 extern int target_ranged_break_num_registers (void);
1867
1868 /* Return non-zero if target knows the data address which triggered this
1869 target_stopped_by_watchpoint, in such case place it to *ADDR_P. Only the
1870 INFERIOR_PTID task is being queried. */
1871 #define target_stopped_data_address(target, addr_p) \
1872 (*(target)->to_stopped_data_address) (target, addr_p)
1873
1874 /* Return non-zero if ADDR is within the range of a watchpoint spanning
1875 LENGTH bytes beginning at START. */
1876 #define target_watchpoint_addr_within_range(target, addr, start, length) \
1877 (*(target)->to_watchpoint_addr_within_range) (target, addr, start, length)
1878
1879 /* Return non-zero if the target is capable of using hardware to evaluate
1880 the condition expression. In this case, if the condition is false when
1881 the watched memory location changes, execution may continue without the
1882 debugger being notified.
1883
1884 Due to limitations in the hardware implementation, it may be capable of
1885 avoiding triggering the watchpoint in some cases where the condition
1886 expression is false, but may report some false positives as well.
1887 For this reason, GDB will still evaluate the condition expression when
1888 the watchpoint triggers. */
1889 #define target_can_accel_watchpoint_condition(addr, len, type, cond) \
1890 (*current_target.to_can_accel_watchpoint_condition) (&current_target, \
1891 addr, len, type, cond)
1892
1893 /* Return number of debug registers needed for a masked watchpoint,
1894 -1 if masked watchpoints are not supported or -2 if the given address
1895 and mask combination cannot be used. */
1896
1897 extern int target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask);
1898
1899 /* Target can execute in reverse? */
1900 #define target_can_execute_reverse \
1901 current_target.to_can_execute_reverse (&current_target)
1902
1903 extern const struct target_desc *target_read_description (struct target_ops *);
1904
1905 #define target_get_ada_task_ptid(lwp, tid) \
1906 (*current_target.to_get_ada_task_ptid) (&current_target, lwp,tid)
1907
1908 /* Utility implementation of searching memory. */
1909 extern int simple_search_memory (struct target_ops* ops,
1910 CORE_ADDR start_addr,
1911 ULONGEST search_space_len,
1912 const gdb_byte *pattern,
1913 ULONGEST pattern_len,
1914 CORE_ADDR *found_addrp);
1915
1916 /* Main entry point for searching memory. */
1917 extern int target_search_memory (CORE_ADDR start_addr,
1918 ULONGEST search_space_len,
1919 const gdb_byte *pattern,
1920 ULONGEST pattern_len,
1921 CORE_ADDR *found_addrp);
1922
1923 /* Target file operations. */
1924
1925 /* Open FILENAME on the target, using FLAGS and MODE. Return a
1926 target file descriptor, or -1 if an error occurs (and set
1927 *TARGET_ERRNO). */
1928 extern int target_fileio_open (const char *filename, int flags, int mode,
1929 int *target_errno);
1930
1931 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
1932 Return the number of bytes written, or -1 if an error occurs
1933 (and set *TARGET_ERRNO). */
1934 extern int target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len,
1935 ULONGEST offset, int *target_errno);
1936
1937 /* Read up to LEN bytes FD on the target into READ_BUF.
1938 Return the number of bytes read, or -1 if an error occurs
1939 (and set *TARGET_ERRNO). */
1940 extern int target_fileio_pread (int fd, gdb_byte *read_buf, int len,
1941 ULONGEST offset, int *target_errno);
1942
1943 /* Close FD on the target. Return 0, or -1 if an error occurs
1944 (and set *TARGET_ERRNO). */
1945 extern int target_fileio_close (int fd, int *target_errno);
1946
1947 /* Unlink FILENAME on the target. Return 0, or -1 if an error
1948 occurs (and set *TARGET_ERRNO). */
1949 extern int target_fileio_unlink (const char *filename, int *target_errno);
1950
1951 /* Read value of symbolic link FILENAME on the target. Return a
1952 null-terminated string allocated via xmalloc, or NULL if an error
1953 occurs (and set *TARGET_ERRNO). */
1954 extern char *target_fileio_readlink (const char *filename, int *target_errno);
1955
1956 /* Read target file FILENAME. The return value will be -1 if the transfer
1957 fails or is not supported; 0 if the object is empty; or the length
1958 of the object otherwise. If a positive value is returned, a
1959 sufficiently large buffer will be allocated using xmalloc and
1960 returned in *BUF_P containing the contents of the object.
1961
1962 This method should be used for objects sufficiently small to store
1963 in a single xmalloc'd buffer, when no fixed bound on the object's
1964 size is known in advance. */
1965 extern LONGEST target_fileio_read_alloc (const char *filename,
1966 gdb_byte **buf_p);
1967
1968 /* Read target file FILENAME. The result is NUL-terminated and
1969 returned as a string, allocated using xmalloc. If an error occurs
1970 or the transfer is unsupported, NULL is returned. Empty objects
1971 are returned as allocated but empty strings. A warning is issued
1972 if the result contains any embedded NUL bytes. */
1973 extern char *target_fileio_read_stralloc (const char *filename);
1974
1975
1976 /* Tracepoint-related operations. */
1977
1978 #define target_trace_init() \
1979 (*current_target.to_trace_init) (&current_target)
1980
1981 #define target_download_tracepoint(t) \
1982 (*current_target.to_download_tracepoint) (&current_target, t)
1983
1984 #define target_can_download_tracepoint() \
1985 (*current_target.to_can_download_tracepoint) (&current_target)
1986
1987 #define target_download_trace_state_variable(tsv) \
1988 (*current_target.to_download_trace_state_variable) (&current_target, tsv)
1989
1990 #define target_enable_tracepoint(loc) \
1991 (*current_target.to_enable_tracepoint) (&current_target, loc)
1992
1993 #define target_disable_tracepoint(loc) \
1994 (*current_target.to_disable_tracepoint) (&current_target, loc)
1995
1996 #define target_trace_start() \
1997 (*current_target.to_trace_start) (&current_target)
1998
1999 #define target_trace_set_readonly_regions() \
2000 (*current_target.to_trace_set_readonly_regions) (&current_target)
2001
2002 #define target_get_trace_status(ts) \
2003 (*current_target.to_get_trace_status) (&current_target, ts)
2004
2005 #define target_get_tracepoint_status(tp,utp) \
2006 (*current_target.to_get_tracepoint_status) (&current_target, tp, utp)
2007
2008 #define target_trace_stop() \
2009 (*current_target.to_trace_stop) (&current_target)
2010
2011 #define target_trace_find(type,num,addr1,addr2,tpp) \
2012 (*current_target.to_trace_find) (&current_target, \
2013 (type), (num), (addr1), (addr2), (tpp))
2014
2015 #define target_get_trace_state_variable_value(tsv,val) \
2016 (*current_target.to_get_trace_state_variable_value) (&current_target, \
2017 (tsv), (val))
2018
2019 #define target_save_trace_data(filename) \
2020 (*current_target.to_save_trace_data) (&current_target, filename)
2021
2022 #define target_upload_tracepoints(utpp) \
2023 (*current_target.to_upload_tracepoints) (&current_target, utpp)
2024
2025 #define target_upload_trace_state_variables(utsvp) \
2026 (*current_target.to_upload_trace_state_variables) (&current_target, utsvp)
2027
2028 #define target_get_raw_trace_data(buf,offset,len) \
2029 (*current_target.to_get_raw_trace_data) (&current_target, \
2030 (buf), (offset), (len))
2031
2032 #define target_get_min_fast_tracepoint_insn_len() \
2033 (*current_target.to_get_min_fast_tracepoint_insn_len) (&current_target)
2034
2035 #define target_set_disconnected_tracing(val) \
2036 (*current_target.to_set_disconnected_tracing) (&current_target, val)
2037
2038 #define target_set_circular_trace_buffer(val) \
2039 (*current_target.to_set_circular_trace_buffer) (&current_target, val)
2040
2041 #define target_set_trace_buffer_size(val) \
2042 (*current_target.to_set_trace_buffer_size) (&current_target, val)
2043
2044 #define target_set_trace_notes(user,notes,stopnotes) \
2045 (*current_target.to_set_trace_notes) (&current_target, \
2046 (user), (notes), (stopnotes))
2047
2048 #define target_get_tib_address(ptid, addr) \
2049 (*current_target.to_get_tib_address) (&current_target, (ptid), (addr))
2050
2051 #define target_set_permissions() \
2052 (*current_target.to_set_permissions) (&current_target)
2053
2054 #define target_static_tracepoint_marker_at(addr, marker) \
2055 (*current_target.to_static_tracepoint_marker_at) (&current_target, \
2056 addr, marker)
2057
2058 #define target_static_tracepoint_markers_by_strid(marker_id) \
2059 (*current_target.to_static_tracepoint_markers_by_strid) (&current_target, \
2060 marker_id)
2061
2062 #define target_traceframe_info() \
2063 (*current_target.to_traceframe_info) (&current_target)
2064
2065 #define target_use_agent(use) \
2066 (*current_target.to_use_agent) (&current_target, use)
2067
2068 #define target_can_use_agent() \
2069 (*current_target.to_can_use_agent) (&current_target)
2070
2071 #define target_augmented_libraries_svr4_read() \
2072 (*current_target.to_augmented_libraries_svr4_read) (&current_target)
2073
2074 /* Command logging facility. */
2075
2076 #define target_log_command(p) \
2077 (*current_target.to_log_command) (&current_target, p)
2078
2079
2080 extern int target_core_of_thread (ptid_t ptid);
2081
2082 /* See to_get_unwinder in struct target_ops. */
2083 extern const struct frame_unwind *target_get_unwinder (void);
2084
2085 /* See to_get_tailcall_unwinder in struct target_ops. */
2086 extern const struct frame_unwind *target_get_tailcall_unwinder (void);
2087
2088 /* This implements basic memory verification, reading target memory
2089 and performing the comparison here (as opposed to accelerated
2090 verification making use of the qCRC packet, for example). */
2091
2092 extern int simple_verify_memory (struct target_ops* ops,
2093 const gdb_byte *data,
2094 CORE_ADDR memaddr, ULONGEST size);
2095
2096 /* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range matches
2097 the contents of [DATA,DATA+SIZE). Returns 1 if there's a match, 0
2098 if there's a mismatch, and -1 if an error is encountered while
2099 reading memory. Throws an error if the functionality is found not
2100 to be supported by the current target. */
2101 int target_verify_memory (const gdb_byte *data,
2102 CORE_ADDR memaddr, ULONGEST size);
2103
2104 /* Routines for maintenance of the target structures...
2105
2106 complete_target_initialization: Finalize a target_ops by filling in
2107 any fields needed by the target implementation. Unnecessary for
2108 targets which are registered via add_target, as this part gets
2109 taken care of then.
2110
2111 add_target: Add a target to the list of all possible targets.
2112 This only makes sense for targets that should be activated using
2113 the "target TARGET_NAME ..." command.
2114
2115 push_target: Make this target the top of the stack of currently used
2116 targets, within its particular stratum of the stack. Result
2117 is 0 if now atop the stack, nonzero if not on top (maybe
2118 should warn user).
2119
2120 unpush_target: Remove this from the stack of currently used targets,
2121 no matter where it is on the list. Returns 0 if no
2122 change, 1 if removed from stack. */
2123
2124 extern void add_target (struct target_ops *);
2125
2126 extern void add_target_with_completer (struct target_ops *t,
2127 completer_ftype *completer);
2128
2129 extern void complete_target_initialization (struct target_ops *t);
2130
2131 /* Adds a command ALIAS for target T and marks it deprecated. This is useful
2132 for maintaining backwards compatibility when renaming targets. */
2133
2134 extern void add_deprecated_target_alias (struct target_ops *t, char *alias);
2135
2136 extern void push_target (struct target_ops *);
2137
2138 extern int unpush_target (struct target_ops *);
2139
2140 extern void target_pre_inferior (int);
2141
2142 extern void target_preopen (int);
2143
2144 /* Does whatever cleanup is required to get rid of all pushed targets. */
2145 extern void pop_all_targets (void);
2146
2147 /* Like pop_all_targets, but pops only targets whose stratum is
2148 strictly above ABOVE_STRATUM. */
2149 extern void pop_all_targets_above (enum strata above_stratum);
2150
2151 extern int target_is_pushed (struct target_ops *t);
2152
2153 extern CORE_ADDR target_translate_tls_address (struct objfile *objfile,
2154 CORE_ADDR offset);
2155
2156 /* Struct target_section maps address ranges to file sections. It is
2157 mostly used with BFD files, but can be used without (e.g. for handling
2158 raw disks, or files not in formats handled by BFD). */
2159
2160 struct target_section
2161 {
2162 CORE_ADDR addr; /* Lowest address in section */
2163 CORE_ADDR endaddr; /* 1+highest address in section */
2164
2165 struct bfd_section *the_bfd_section;
2166
2167 /* The "owner" of the section.
2168 It can be any unique value. It is set by add_target_sections
2169 and used by remove_target_sections.
2170 For example, for executables it is a pointer to exec_bfd and
2171 for shlibs it is the so_list pointer. */
2172 void *owner;
2173 };
2174
2175 /* Holds an array of target sections. Defined by [SECTIONS..SECTIONS_END[. */
2176
2177 struct target_section_table
2178 {
2179 struct target_section *sections;
2180 struct target_section *sections_end;
2181 };
2182
2183 /* Return the "section" containing the specified address. */
2184 struct target_section *target_section_by_addr (struct target_ops *target,
2185 CORE_ADDR addr);
2186
2187 /* Return the target section table this target (or the targets
2188 beneath) currently manipulate. */
2189
2190 extern struct target_section_table *target_get_section_table
2191 (struct target_ops *target);
2192
2193 /* From mem-break.c */
2194
2195 extern int memory_remove_breakpoint (struct target_ops *, struct gdbarch *,
2196 struct bp_target_info *);
2197
2198 extern int memory_insert_breakpoint (struct target_ops *, struct gdbarch *,
2199 struct bp_target_info *);
2200
2201 /* Check whether the memory at the breakpoint's placed address still
2202 contains the expected breakpoint instruction. */
2203
2204 extern int memory_validate_breakpoint (struct gdbarch *gdbarch,
2205 struct bp_target_info *bp_tgt);
2206
2207 extern int default_memory_remove_breakpoint (struct gdbarch *,
2208 struct bp_target_info *);
2209
2210 extern int default_memory_insert_breakpoint (struct gdbarch *,
2211 struct bp_target_info *);
2212
2213
2214 /* From target.c */
2215
2216 extern void initialize_targets (void);
2217
2218 extern void noprocess (void) ATTRIBUTE_NORETURN;
2219
2220 extern void target_require_runnable (void);
2221
2222 extern struct target_ops *find_target_beneath (struct target_ops *);
2223
2224 /* Find the target at STRATUM. If no target is at that stratum,
2225 return NULL. */
2226
2227 struct target_ops *find_target_at (enum strata stratum);
2228
2229 /* Read OS data object of type TYPE from the target, and return it in
2230 XML format. The result is NUL-terminated and returned as a string,
2231 allocated using xmalloc. If an error occurs or the transfer is
2232 unsupported, NULL is returned. Empty objects are returned as
2233 allocated but empty strings. */
2234
2235 extern char *target_get_osdata (const char *type);
2236
2237 \f
2238 /* Stuff that should be shared among the various remote targets. */
2239
2240 /* Debugging level. 0 is off, and non-zero values mean to print some debug
2241 information (higher values, more information). */
2242 extern int remote_debug;
2243
2244 /* Speed in bits per second, or -1 which means don't mess with the speed. */
2245 extern int baud_rate;
2246 /* Timeout limit for response from target. */
2247 extern int remote_timeout;
2248
2249 \f
2250
2251 /* Set the show memory breakpoints mode to show, and installs a cleanup
2252 to restore it back to the current value. */
2253 extern struct cleanup *make_show_memory_breakpoints_cleanup (int show);
2254
2255 extern int may_write_registers;
2256 extern int may_write_memory;
2257 extern int may_insert_breakpoints;
2258 extern int may_insert_tracepoints;
2259 extern int may_insert_fast_tracepoints;
2260 extern int may_stop;
2261
2262 extern void update_target_permissions (void);
2263
2264 \f
2265 /* Imported from machine dependent code. */
2266
2267 /* See to_supports_btrace in struct target_ops. */
2268 extern int target_supports_btrace (enum btrace_format);
2269
2270 /* See to_enable_btrace in struct target_ops. */
2271 extern struct btrace_target_info *
2272 target_enable_btrace (ptid_t ptid, const struct btrace_config *);
2273
2274 /* See to_disable_btrace in struct target_ops. */
2275 extern void target_disable_btrace (struct btrace_target_info *btinfo);
2276
2277 /* See to_teardown_btrace in struct target_ops. */
2278 extern void target_teardown_btrace (struct btrace_target_info *btinfo);
2279
2280 /* See to_read_btrace in struct target_ops. */
2281 extern enum btrace_error target_read_btrace (struct btrace_data *,
2282 struct btrace_target_info *,
2283 enum btrace_read_type);
2284
2285 /* See to_btrace_conf in struct target_ops. */
2286 extern const struct btrace_config *
2287 target_btrace_conf (const struct btrace_target_info *);
2288
2289 /* See to_stop_recording in struct target_ops. */
2290 extern void target_stop_recording (void);
2291
2292 /* See to_save_record in struct target_ops. */
2293 extern void target_save_record (const char *filename);
2294
2295 /* Query if the target supports deleting the execution log. */
2296 extern int target_supports_delete_record (void);
2297
2298 /* See to_delete_record in struct target_ops. */
2299 extern void target_delete_record (void);
2300
2301 /* See to_record_is_replaying in struct target_ops. */
2302 extern int target_record_is_replaying (void);
2303
2304 /* See to_goto_record_begin in struct target_ops. */
2305 extern void target_goto_record_begin (void);
2306
2307 /* See to_goto_record_end in struct target_ops. */
2308 extern void target_goto_record_end (void);
2309
2310 /* See to_goto_record in struct target_ops. */
2311 extern void target_goto_record (ULONGEST insn);
2312
2313 /* See to_insn_history. */
2314 extern void target_insn_history (int size, int flags);
2315
2316 /* See to_insn_history_from. */
2317 extern void target_insn_history_from (ULONGEST from, int size, int flags);
2318
2319 /* See to_insn_history_range. */
2320 extern void target_insn_history_range (ULONGEST begin, ULONGEST end, int flags);
2321
2322 /* See to_call_history. */
2323 extern void target_call_history (int size, int flags);
2324
2325 /* See to_call_history_from. */
2326 extern void target_call_history_from (ULONGEST begin, int size, int flags);
2327
2328 /* See to_call_history_range. */
2329 extern void target_call_history_range (ULONGEST begin, ULONGEST end, int flags);
2330
2331 /* See to_decr_pc_after_break. */
2332 extern CORE_ADDR target_decr_pc_after_break (struct gdbarch *gdbarch);
2333
2334 /* See to_prepare_to_generate_core. */
2335 extern void target_prepare_to_generate_core (void);
2336
2337 /* See to_done_generating_core. */
2338 extern void target_done_generating_core (void);
2339
2340 #endif /* !defined (TARGET_H) */